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Diffstat (limited to 'uip')
92 files changed, 14303 insertions, 0 deletions
diff --git a/uip/README.uIP b/uip/README.uIP new file mode 100644 index 0000000..b501538 --- /dev/null +++ b/uip/README.uIP @@ -0,0 +1,13 @@ +uIP is a very small implementation of the TCP/IP stack that is written +by Adam Dunkels <adam@sics.se>. More information can be obtained +at the uIP homepage at http://www.sics.se/~adam/uip/. + +This is version $Name: uip-1-0 $. + +The directory structure look as follows: + +apps/ - Example applications +doc/ - Documentation +lib/ - Library code used by some applications +uip/ - uIP TCP/IP stack code +unix/ - uIP as a user space process under FreeBSD or Linux diff --git a/uip/apps/README b/uip/apps/README new file mode 100644 index 0000000..0096c4e --- /dev/null +++ b/uip/apps/README @@ -0,0 +1,2 @@ +This directory contains a few example applications. They are not all +heavily tested, however. diff --git a/uip/apps/dhcpc/Makefile.dhcpc b/uip/apps/dhcpc/Makefile.dhcpc new file mode 100644 index 0000000..f84c84f --- /dev/null +++ b/uip/apps/dhcpc/Makefile.dhcpc @@ -0,0 +1 @@ +APP_SOURCES += dhcpc.c timer.c diff --git a/uip/apps/dhcpc/dhcpc.c b/uip/apps/dhcpc/dhcpc.c new file mode 100644 index 0000000..ac738e7 --- /dev/null +++ b/uip/apps/dhcpc/dhcpc.c @@ -0,0 +1,356 @@ +/* + * Copyright (c) 2005, Swedish Institute of Computer Science + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * @(#)$Id: dhcpc.c,v 1.2 2006/06/11 21:46:37 adam Exp $ + */ + +#include <stdio.h> +#include <string.h> + +#include "uip.h" +#include "dhcpc.h" +#include "timer.h" +#include "pt.h" + +#define STATE_INITIAL 0 +#define STATE_SENDING 1 +#define STATE_OFFER_RECEIVED 2 +#define STATE_CONFIG_RECEIVED 3 + +static struct dhcpc_state s; + +struct dhcp_msg { + u8_t op, htype, hlen, hops; + u8_t xid[4]; + u16_t secs, flags; + u8_t ciaddr[4]; + u8_t yiaddr[4]; + u8_t siaddr[4]; + u8_t giaddr[4]; + u8_t chaddr[16]; +#ifndef UIP_CONF_DHCP_LIGHT + u8_t sname[64]; + u8_t file[128]; +#endif + u8_t options[312]; +}; + +#define BOOTP_BROADCAST 0x8000 + +#define DHCP_REQUEST 1 +#define DHCP_REPLY 2 +#define DHCP_HTYPE_ETHERNET 1 +#define DHCP_HLEN_ETHERNET 6 +#define DHCP_MSG_LEN 236 + +#define DHCPC_SERVER_PORT 67 +#define DHCPC_CLIENT_PORT 68 + +#define DHCPDISCOVER 1 +#define DHCPOFFER 2 +#define DHCPREQUEST 3 +#define DHCPDECLINE 4 +#define DHCPACK 5 +#define DHCPNAK 6 +#define DHCPRELEASE 7 + +#define DHCP_OPTION_SUBNET_MASK 1 +#define DHCP_OPTION_ROUTER 3 +#define DHCP_OPTION_DNS_SERVER 6 +#define DHCP_OPTION_REQ_IPADDR 50 +#define DHCP_OPTION_LEASE_TIME 51 +#define DHCP_OPTION_MSG_TYPE 53 +#define DHCP_OPTION_SERVER_ID 54 +#define DHCP_OPTION_REQ_LIST 55 +#define DHCP_OPTION_END 255 + +static const u8_t xid[4] = {0xad, 0xde, 0x12, 0x23}; +static const u8_t magic_cookie[4] = {99, 130, 83, 99}; +/*---------------------------------------------------------------------------*/ +static u8_t * +add_msg_type(u8_t *optptr, u8_t type) +{ + *optptr++ = DHCP_OPTION_MSG_TYPE; + *optptr++ = 1; + *optptr++ = type; + return optptr; +} +/*---------------------------------------------------------------------------*/ +static u8_t * +add_server_id(u8_t *optptr) +{ + *optptr++ = DHCP_OPTION_SERVER_ID; + *optptr++ = 4; + memcpy(optptr, s.serverid, 4); + return optptr + 4; +} +/*---------------------------------------------------------------------------*/ +static u8_t * +add_req_ipaddr(u8_t *optptr) +{ + *optptr++ = DHCP_OPTION_REQ_IPADDR; + *optptr++ = 4; + memcpy(optptr, s.ipaddr, 4); + return optptr + 4; +} +/*---------------------------------------------------------------------------*/ +static u8_t * +add_req_options(u8_t *optptr) +{ + *optptr++ = DHCP_OPTION_REQ_LIST; + *optptr++ = 3; + *optptr++ = DHCP_OPTION_SUBNET_MASK; + *optptr++ = DHCP_OPTION_ROUTER; + *optptr++ = DHCP_OPTION_DNS_SERVER; + return optptr; +} +/*---------------------------------------------------------------------------*/ +static u8_t * +add_end(u8_t *optptr) +{ + *optptr++ = DHCP_OPTION_END; + return optptr; +} +/*---------------------------------------------------------------------------*/ +static void +create_msg(register struct dhcp_msg *m) +{ + m->op = DHCP_REQUEST; + m->htype = DHCP_HTYPE_ETHERNET; + m->hlen = s.mac_len; + m->hops = 0; + memcpy(m->xid, xid, sizeof(m->xid)); + m->secs = 0; + m->flags = HTONS(BOOTP_BROADCAST); /* Broadcast bit. */ + /* uip_ipaddr_copy(m->ciaddr, uip_hostaddr);*/ + memcpy(m->ciaddr, uip_hostaddr, sizeof(m->ciaddr)); + memset(m->yiaddr, 0, sizeof(m->yiaddr)); + memset(m->siaddr, 0, sizeof(m->siaddr)); + memset(m->giaddr, 0, sizeof(m->giaddr)); + memcpy(m->chaddr, s.mac_addr, s.mac_len); + memset(&m->chaddr[s.mac_len], 0, sizeof(m->chaddr) - s.mac_len); +#ifndef UIP_CONF_DHCP_LIGHT + memset(m->sname, 0, sizeof(m->sname)); + memset(m->file, 0, sizeof(m->file)); +#endif + + memcpy(m->options, magic_cookie, sizeof(magic_cookie)); +} +/*---------------------------------------------------------------------------*/ +static void +send_discover(void) +{ + u8_t *end; + struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata; + + create_msg(m); + + end = add_msg_type(&m->options[4], DHCPDISCOVER); + end = add_req_options(end); + end = add_end(end); + + uip_send(uip_appdata, end - (u8_t *)uip_appdata); +} +/*---------------------------------------------------------------------------*/ +static void +send_request(void) +{ + u8_t *end; + struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata; + + create_msg(m); + + end = add_msg_type(&m->options[4], DHCPREQUEST); + end = add_server_id(end); + end = add_req_ipaddr(end); + end = add_end(end); + + uip_send(uip_appdata, end - (u8_t *)uip_appdata); +} +/*---------------------------------------------------------------------------*/ +static u8_t +parse_options(u8_t *optptr, int len) +{ + u8_t *end = optptr + len; + u8_t type = 0; + + while(optptr < end) { + switch(*optptr) { + case DHCP_OPTION_SUBNET_MASK: + memcpy(s.netmask, optptr + 2, 4); + break; + case DHCP_OPTION_ROUTER: + memcpy(s.default_router, optptr + 2, 4); + break; + case DHCP_OPTION_DNS_SERVER: + memcpy(s.dnsaddr, optptr + 2, 4); + break; + case DHCP_OPTION_MSG_TYPE: + type = *(optptr + 2); + break; + case DHCP_OPTION_SERVER_ID: + memcpy(s.serverid, optptr + 2, 4); + break; + case DHCP_OPTION_LEASE_TIME: + memcpy(s.lease_time, optptr + 2, 4); + break; + case DHCP_OPTION_END: + return type; + } + + optptr += optptr[1] + 2; + } + return type; +} +/*---------------------------------------------------------------------------*/ +static u8_t +parse_msg(void) +{ + struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata; + + if(m->op == DHCP_REPLY && + memcmp(m->xid, xid, sizeof(xid)) == 0 && + memcmp(m->chaddr, s.mac_addr, s.mac_len) == 0) { + memcpy(s.ipaddr, m->yiaddr, 4); + return parse_options(&m->options[4], uip_datalen()); + } + return 0; +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(handle_dhcp(void)) +{ + PT_BEGIN(&s.pt); + + /* try_again:*/ + s.state = STATE_SENDING; + s.ticks = CLOCK_SECOND; + + do { + send_discover(); + timer_set(&s.timer, s.ticks); + PT_WAIT_UNTIL(&s.pt, uip_newdata() || timer_expired(&s.timer)); + + if(uip_newdata() && parse_msg() == DHCPOFFER) { + s.state = STATE_OFFER_RECEIVED; + break; + } + + if(s.ticks < CLOCK_SECOND * 60) { + s.ticks *= 2; + } + } while(s.state != STATE_OFFER_RECEIVED); + + s.ticks = CLOCK_SECOND; + + do { + send_request(); + timer_set(&s.timer, s.ticks); + PT_WAIT_UNTIL(&s.pt, uip_newdata() || timer_expired(&s.timer)); + + if(uip_newdata() && parse_msg() == DHCPACK) { + s.state = STATE_CONFIG_RECEIVED; + break; + } + + if(s.ticks <= CLOCK_SECOND * 10) { + s.ticks += CLOCK_SECOND; + } else { + PT_RESTART(&s.pt); + } + } while(s.state != STATE_CONFIG_RECEIVED); + +#if 0 + printf("Got IP address %d.%d.%d.%d\n", + uip_ipaddr1(s.ipaddr), uip_ipaddr2(s.ipaddr), + uip_ipaddr3(s.ipaddr), uip_ipaddr4(s.ipaddr)); + printf("Got netmask %d.%d.%d.%d\n", + uip_ipaddr1(s.netmask), uip_ipaddr2(s.netmask), + uip_ipaddr3(s.netmask), uip_ipaddr4(s.netmask)); + printf("Got DNS server %d.%d.%d.%d\n", + uip_ipaddr1(s.dnsaddr), uip_ipaddr2(s.dnsaddr), + uip_ipaddr3(s.dnsaddr), uip_ipaddr4(s.dnsaddr)); + printf("Got default router %d.%d.%d.%d\n", + uip_ipaddr1(s.default_router), uip_ipaddr2(s.default_router), + uip_ipaddr3(s.default_router), uip_ipaddr4(s.default_router)); + printf("Lease expires in %ld seconds\n", + ntohs(s.lease_time[0])*65536ul + ntohs(s.lease_time[1])); +#endif + + dhcpc_configured(&s); + + /* timer_stop(&s.timer);*/ + + /* + * PT_END restarts the thread so we do this instead. Eventually we + * should reacquire expired leases here. + */ + while(1) { + PT_YIELD(&s.pt); + } + + PT_END(&s.pt); +} +/*---------------------------------------------------------------------------*/ +void +dhcpc_init(const void *mac_addr, int mac_len) +{ + uip_ipaddr_t addr; + + s.mac_addr = mac_addr; + s.mac_len = mac_len; + + s.state = STATE_INITIAL; + uip_ipaddr(addr, 255,255,255,255); + s.conn = uip_udp_new(&addr, HTONS(DHCPC_SERVER_PORT)); + if(s.conn != NULL) { + uip_udp_bind(s.conn, HTONS(DHCPC_CLIENT_PORT)); + } + PT_INIT(&s.pt); +} +/*---------------------------------------------------------------------------*/ +void +dhcpc_appcall(void) +{ + handle_dhcp(); +} +/*---------------------------------------------------------------------------*/ +void +dhcpc_request(void) +{ + u16_t ipaddr[2]; + + if(s.state == STATE_INITIAL) { + uip_ipaddr(ipaddr, 0,0,0,0); + uip_sethostaddr(ipaddr); + /* handle_dhcp(PROCESS_EVENT_NONE, NULL);*/ + } +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/apps/dhcpc/dhcpc.h b/uip/apps/dhcpc/dhcpc.h new file mode 100644 index 0000000..c6550ec --- /dev/null +++ b/uip/apps/dhcpc/dhcpc.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2005, Swedish Institute of Computer Science + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * @(#)$Id: dhcpc.h,v 1.3 2006/06/11 21:46:37 adam Exp $ + */ +#ifndef __DHCPC_H__ +#define __DHCPC_H__ + +#include "timer.h" +#include "pt.h" + +struct dhcpc_state { + struct pt pt; + char state; + struct uip_udp_conn *conn; + struct timer timer; + u16_t ticks; + const void *mac_addr; + int mac_len; + + u8_t serverid[4]; + + u16_t lease_time[2]; + u16_t ipaddr[2]; + u16_t netmask[2]; + u16_t dnsaddr[2]; + u16_t default_router[2]; +}; + +void dhcpc_init(const void *mac_addr, int mac_len); +void dhcpc_request(void); + +void dhcpc_appcall(void); + +void dhcpc_configured(const struct dhcpc_state *s); + +typedef struct dhcpc_state uip_udp_appstate_t; +#define UIP_UDP_APPCALL dhcpc_appcall + + +#endif /* __DHCPC_H__ */ diff --git a/uip/apps/hello-world/Makefile.hello-world b/uip/apps/hello-world/Makefile.hello-world new file mode 100644 index 0000000..e34aaf5 --- /dev/null +++ b/uip/apps/hello-world/Makefile.hello-world @@ -0,0 +1 @@ +APP_SOURCES += hello-world.c diff --git a/uip/apps/hello-world/hello-world.c b/uip/apps/hello-world/hello-world.c new file mode 100644 index 0000000..7d0697c --- /dev/null +++ b/uip/apps/hello-world/hello-world.c @@ -0,0 +1,100 @@ +/** + * \addtogroup helloworld + * @{ + */ + +/** + * \file + * An example of how to write uIP applications + * with protosockets. + * \author + * Adam Dunkels <adam@sics.se> + */ + +/* + * This is a short example of how to write uIP applications using + * protosockets. + */ + +/* + * We define the application state (struct hello_world_state) in the + * hello-world.h file, so we need to include it here. We also include + * uip.h (since this cannot be included in hello-world.h) and + * <string.h>, since we use the memcpy() function in the code. + */ +#include "hello-world.h" +#include "uip.h" +#include <string.h> + +/* + * Declaration of the protosocket function that handles the connection + * (defined at the end of the code). + */ +static int handle_connection(struct hello_world_state *s); +/*---------------------------------------------------------------------------*/ +/* + * The initialization function. We must explicitly call this function + * from the system initialization code, some time after uip_init() is + * called. + */ +void +hello_world_init(void) +{ + /* We start to listen for connections on TCP port 1000. */ + uip_listen(HTONS(1000)); +} +/*---------------------------------------------------------------------------*/ +/* + * In hello-world.h we have defined the UIP_APPCALL macro to + * hello_world_appcall so that this funcion is uIP's application + * function. This function is called whenever an uIP event occurs + * (e.g. when a new connection is established, new data arrives, sent + * data is acknowledged, data needs to be retransmitted, etc.). + */ +void +hello_world_appcall(void) +{ + /* + * The uip_conn structure has a field called "appstate" that holds + * the application state of the connection. We make a pointer to + * this to access it easier. + */ + struct hello_world_state *s = &(uip_conn->appstate); + + /* + * If a new connection was just established, we should initialize + * the protosocket in our applications' state structure. + */ + if(uip_connected()) { + PSOCK_INIT(&s->p, s->inputbuffer, sizeof(s->inputbuffer)); + } + + /* + * Finally, we run the protosocket function that actually handles + * the communication. We pass it a pointer to the application state + * of the current connection. + */ + handle_connection(s); +} +/*---------------------------------------------------------------------------*/ +/* + * This is the protosocket function that handles the communication. A + * protosocket function must always return an int, but must never + * explicitly return - all return statements are hidden in the PSOCK + * macros. + */ +static int +handle_connection(struct hello_world_state *s) +{ + PSOCK_BEGIN(&s->p); + + PSOCK_SEND_STR(&s->p, "Hello. What is your name?\n"); + PSOCK_READTO(&s->p, '\n'); + strncpy(s->name, s->inputbuffer, sizeof(s->name)); + PSOCK_SEND_STR(&s->p, "Hello "); + PSOCK_SEND_STR(&s->p, s->name); + PSOCK_CLOSE(&s->p); + + PSOCK_END(&s->p); +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/apps/hello-world/hello-world.h b/uip/apps/hello-world/hello-world.h new file mode 100644 index 0000000..5ef333b --- /dev/null +++ b/uip/apps/hello-world/hello-world.h @@ -0,0 +1,52 @@ +/** + * \addtogroup apps + * @{ + */ + +/** + * \defgroup helloworld Hello, world + * @{ + * + * A small example showing how to write applications with + * \ref psock "protosockets". + */ + +/** + * \file + * Header file for an example of how to write uIP applications + * with protosockets. + * \author + * Adam Dunkels <adam@sics.se> + */ + +#ifndef __HELLO_WORLD_H__ +#define __HELLO_WORLD_H__ + +/* Since this file will be included by uip.h, we cannot include uip.h + here. But we might need to include uipopt.h if we need the u8_t and + u16_t datatypes. */ +#include "uipopt.h" + +#include "psock.h" + +/* Next, we define the uip_tcp_appstate_t datatype. This is the state + of our application, and the memory required for this state is + allocated together with each TCP connection. One application state + for each TCP connection. */ +typedef struct hello_world_state { + struct psock p; + char inputbuffer[10]; + char name[40]; +} uip_tcp_appstate_t; + +/* Finally we define the application function to be called by uIP. */ +void hello_world_appcall(void); +#ifndef UIP_APPCALL +#define UIP_APPCALL hello_world_appcall +#endif /* UIP_APPCALL */ + +void hello_world_init(void); + +#endif /* __HELLO_WORLD_H__ */ +/** @} */ +/** @} */ diff --git a/uip/apps/resolv/Makefile.resolv b/uip/apps/resolv/Makefile.resolv new file mode 100644 index 0000000..94c37d8 --- /dev/null +++ b/uip/apps/resolv/Makefile.resolv @@ -0,0 +1 @@ +APP_SOURCES += resolv.c diff --git a/uip/apps/resolv/resolv.c b/uip/apps/resolv/resolv.c new file mode 100644 index 0000000..30c8fb2 --- /dev/null +++ b/uip/apps/resolv/resolv.c @@ -0,0 +1,464 @@ +/** + * \addtogroup apps + * @{ + */ + +/** + * \defgroup resolv DNS resolver + * @{ + * + * The uIP DNS resolver functions are used to lookup a hostname and + * map it to a numerical IP address. It maintains a list of resolved + * hostnames that can be queried with the resolv_lookup() + * function. New hostnames can be resolved using the resolv_query() + * function. + * + * When a hostname has been resolved (or found to be non-existant), + * the resolver code calls a callback function called resolv_found() + * that must be implemented by the module that uses the resolver. + */ + +/** + * \file + * DNS host name to IP address resolver. + * \author Adam Dunkels <adam@dunkels.com> + * + * This file implements a DNS host name to IP address resolver. + */ + +/* + * Copyright (c) 2002-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: resolv.c,v 1.5 2006/06/11 21:46:37 adam Exp $ + * + */ + +#include "resolv.h" +#include "uip.h" + +#include <string.h> + +#ifndef NULL +#define NULL (void *)0 +#endif /* NULL */ + +/** \internal The maximum number of retries when asking for a name. */ +#define MAX_RETRIES 8 + +/** \internal The DNS message header. */ +struct dns_hdr { + u16_t id; + u8_t flags1, flags2; +#define DNS_FLAG1_RESPONSE 0x80 +#define DNS_FLAG1_OPCODE_STATUS 0x10 +#define DNS_FLAG1_OPCODE_INVERSE 0x08 +#define DNS_FLAG1_OPCODE_STANDARD 0x00 +#define DNS_FLAG1_AUTHORATIVE 0x04 +#define DNS_FLAG1_TRUNC 0x02 +#define DNS_FLAG1_RD 0x01 +#define DNS_FLAG2_RA 0x80 +#define DNS_FLAG2_ERR_MASK 0x0f +#define DNS_FLAG2_ERR_NONE 0x00 +#define DNS_FLAG2_ERR_NAME 0x03 + u16_t numquestions; + u16_t numanswers; + u16_t numauthrr; + u16_t numextrarr; +}; + +/** \internal The DNS answer message structure. */ +struct dns_answer { + /* DNS answer record starts with either a domain name or a pointer + to a name already present somewhere in the packet. */ + u16_t type; + u16_t class; + u16_t ttl[2]; + u16_t len; + uip_ipaddr_t ipaddr; +}; + +struct namemap { +#define STATE_UNUSED 0 +#define STATE_NEW 1 +#define STATE_ASKING 2 +#define STATE_DONE 3 +#define STATE_ERROR 4 + u8_t state; + u8_t tmr; + u8_t retries; + u8_t seqno; + u8_t err; + char name[32]; + uip_ipaddr_t ipaddr; +}; + +#ifndef UIP_CONF_RESOLV_ENTRIES +#define RESOLV_ENTRIES 4 +#else /* UIP_CONF_RESOLV_ENTRIES */ +#define RESOLV_ENTRIES UIP_CONF_RESOLV_ENTRIES +#endif /* UIP_CONF_RESOLV_ENTRIES */ + + +static struct namemap names[RESOLV_ENTRIES]; + +static u8_t seqno; + +static struct uip_udp_conn *resolv_conn = NULL; + + +/*---------------------------------------------------------------------------*/ +/** \internal + * Walk through a compact encoded DNS name and return the end of it. + * + * \return The end of the name. + */ +/*---------------------------------------------------------------------------*/ +static unsigned char * +parse_name(unsigned char *query) +{ + unsigned char n; + + do { + n = *query++; + + while(n > 0) { + /* printf("%c", *query);*/ + ++query; + --n; + }; + /* printf(".");*/ + } while(*query != 0); + /* printf("\n");*/ + return query + 1; +} +/*---------------------------------------------------------------------------*/ +/** \internal + * Runs through the list of names to see if there are any that have + * not yet been queried and, if so, sends out a query. + */ +/*---------------------------------------------------------------------------*/ +static void +check_entries(void) +{ + register struct dns_hdr *hdr; + char *query, *nptr, *nameptr; + static u8_t i; + static u8_t n; + register struct namemap *namemapptr; + + for(i = 0; i < RESOLV_ENTRIES; ++i) { + namemapptr = &names[i]; + if(namemapptr->state == STATE_NEW || + namemapptr->state == STATE_ASKING) { + if(namemapptr->state == STATE_ASKING) { + if(--namemapptr->tmr == 0) { + if(++namemapptr->retries == MAX_RETRIES) { + namemapptr->state = STATE_ERROR; + resolv_found(namemapptr->name, NULL); + continue; + } + namemapptr->tmr = namemapptr->retries; + } else { + /* printf("Timer %d\n", namemapptr->tmr);*/ + /* Its timer has not run out, so we move on to next + entry. */ + continue; + } + } else { + namemapptr->state = STATE_ASKING; + namemapptr->tmr = 1; + namemapptr->retries = 0; + } + hdr = (struct dns_hdr *)uip_appdata; + memset(hdr, 0, sizeof(struct dns_hdr)); + hdr->id = htons(i); + hdr->flags1 = DNS_FLAG1_RD; + hdr->numquestions = HTONS(1); + query = (char *)uip_appdata + 12; + nameptr = namemapptr->name; + --nameptr; + /* Convert hostname into suitable query format. */ + do { + ++nameptr; + nptr = query; + ++query; + for(n = 0; *nameptr != '.' && *nameptr != 0; ++nameptr) { + *query = *nameptr; + ++query; + ++n; + } + *nptr = n; + } while(*nameptr != 0); + { + static unsigned char endquery[] = + {0,0,1,0,1}; + memcpy(query, endquery, 5); + } + uip_udp_send((unsigned char)(query + 5 - (char *)uip_appdata)); + break; + } + } +} +/*---------------------------------------------------------------------------*/ +/** \internal + * Called when new UDP data arrives. + */ +/*---------------------------------------------------------------------------*/ +static void +newdata(void) +{ + char *nameptr; + struct dns_answer *ans; + struct dns_hdr *hdr; + static u8_t nquestions, nanswers; + static u8_t i; + register struct namemap *namemapptr; + + hdr = (struct dns_hdr *)uip_appdata; + /* printf("ID %d\n", htons(hdr->id)); + printf("Query %d\n", hdr->flags1 & DNS_FLAG1_RESPONSE); + printf("Error %d\n", hdr->flags2 & DNS_FLAG2_ERR_MASK); + printf("Num questions %d, answers %d, authrr %d, extrarr %d\n", + htons(hdr->numquestions), + htons(hdr->numanswers), + htons(hdr->numauthrr), + htons(hdr->numextrarr)); + */ + + /* The ID in the DNS header should be our entry into the name + table. */ + i = htons(hdr->id); + namemapptr = &names[i]; + if(i < RESOLV_ENTRIES && + namemapptr->state == STATE_ASKING) { + + /* This entry is now finished. */ + namemapptr->state = STATE_DONE; + namemapptr->err = hdr->flags2 & DNS_FLAG2_ERR_MASK; + + /* Check for error. If so, call callback to inform. */ + if(namemapptr->err != 0) { + namemapptr->state = STATE_ERROR; + resolv_found(namemapptr->name, NULL); + return; + } + + /* We only care about the question(s) and the answers. The authrr + and the extrarr are simply discarded. */ + nquestions = htons(hdr->numquestions); + nanswers = htons(hdr->numanswers); + + /* Skip the name in the question. XXX: This should really be + checked agains the name in the question, to be sure that they + match. */ + nameptr = parse_name((char *)uip_appdata + 12) + 4; + + while(nanswers > 0) { + /* The first byte in the answer resource record determines if it + is a compressed record or a normal one. */ + if(*nameptr & 0xc0) { + /* Compressed name. */ + nameptr +=2; + /* printf("Compressed anwser\n");*/ + } else { + /* Not compressed name. */ + nameptr = parse_name((char *)nameptr); + } + + ans = (struct dns_answer *)nameptr; + /* printf("Answer: type %x, class %x, ttl %x, length %x\n", + htons(ans->type), htons(ans->class), (htons(ans->ttl[0]) + << 16) | htons(ans->ttl[1]), htons(ans->len));*/ + + /* Check for IP address type and Internet class. Others are + discarded. */ + if(ans->type == HTONS(1) && + ans->class == HTONS(1) && + ans->len == HTONS(4)) { + /* printf("IP address %d.%d.%d.%d\n", + htons(ans->ipaddr[0]) >> 8, + htons(ans->ipaddr[0]) & 0xff, + htons(ans->ipaddr[1]) >> 8, + htons(ans->ipaddr[1]) & 0xff);*/ + /* XXX: we should really check that this IP address is the one + we want. */ + namemapptr->ipaddr[0] = ans->ipaddr[0]; + namemapptr->ipaddr[1] = ans->ipaddr[1]; + + resolv_found(namemapptr->name, namemapptr->ipaddr); + return; + } else { + nameptr = nameptr + 10 + htons(ans->len); + } + --nanswers; + } + } + +} +/*---------------------------------------------------------------------------*/ +/** \internal + * The main UDP function. + */ +/*---------------------------------------------------------------------------*/ +void +resolv_appcall(void) +{ + if(uip_udp_conn->rport == HTONS(53)) { + if(uip_poll()) { + check_entries(); + } + if(uip_newdata()) { + newdata(); + } + } +} +/*---------------------------------------------------------------------------*/ +/** + * Queues a name so that a question for the name will be sent out. + * + * \param name The hostname that is to be queried. + */ +/*---------------------------------------------------------------------------*/ +void +resolv_query(char *name) +{ + static u8_t i; + static u8_t lseq, lseqi; + register struct namemap *nameptr; + + lseq = lseqi = 0; + + for(i = 0; i < RESOLV_ENTRIES; ++i) { + nameptr = &names[i]; + if(nameptr->state == STATE_UNUSED) { + break; + } + if(seqno - nameptr->seqno > lseq) { + lseq = seqno - nameptr->seqno; + lseqi = i; + } + } + + if(i == RESOLV_ENTRIES) { + i = lseqi; + nameptr = &names[i]; + } + + /* printf("Using entry %d\n", i);*/ + + strcpy(nameptr->name, name); + nameptr->state = STATE_NEW; + nameptr->seqno = seqno; + ++seqno; +} +/*---------------------------------------------------------------------------*/ +/** + * Look up a hostname in the array of known hostnames. + * + * \note This function only looks in the internal array of known + * hostnames, it does not send out a query for the hostname if none + * was found. The function resolv_query() can be used to send a query + * for a hostname. + * + * \return A pointer to a 4-byte representation of the hostname's IP + * address, or NULL if the hostname was not found in the array of + * hostnames. + */ +/*---------------------------------------------------------------------------*/ +u16_t * +resolv_lookup(char *name) +{ + static u8_t i; + struct namemap *nameptr; + + /* Walk through the list to see if the name is in there. If it is + not, we return NULL. */ + for(i = 0; i < RESOLV_ENTRIES; ++i) { + nameptr = &names[i]; + if(nameptr->state == STATE_DONE && + strcmp(name, nameptr->name) == 0) { + return nameptr->ipaddr; + } + } + return NULL; +} +/*---------------------------------------------------------------------------*/ +/** + * Obtain the currently configured DNS server. + * + * \return A pointer to a 4-byte representation of the IP address of + * the currently configured DNS server or NULL if no DNS server has + * been configured. + */ +/*---------------------------------------------------------------------------*/ +u16_t * +resolv_getserver(void) +{ + if(resolv_conn == NULL) { + return NULL; + } + return resolv_conn->ripaddr; +} +/*---------------------------------------------------------------------------*/ +/** + * Configure which DNS server to use for queries. + * + * \param dnsserver A pointer to a 4-byte representation of the IP + * address of the DNS server to be configured. + */ +/*---------------------------------------------------------------------------*/ +void +resolv_conf(u16_t *dnsserver) +{ + if(resolv_conn != NULL) { + uip_udp_remove(resolv_conn); + } + + resolv_conn = uip_udp_new((uip_ipaddr_t *)dnsserver, HTONS(53)); +} +/*---------------------------------------------------------------------------*/ +/** + * Initalize the resolver. + */ +/*---------------------------------------------------------------------------*/ +void +resolv_init(void) +{ + static u8_t i; + + for(i = 0; i < RESOLV_ENTRIES; ++i) { + names[i].state = STATE_DONE; + } + +} +/*---------------------------------------------------------------------------*/ + +/** @} */ +/** @} */ diff --git a/uip/apps/resolv/resolv.h b/uip/apps/resolv/resolv.h new file mode 100644 index 0000000..abab34e --- /dev/null +++ b/uip/apps/resolv/resolv.h @@ -0,0 +1,75 @@ +/** + * \addtogroup resolv + * @{ + */ +/** + * \file + * DNS resolver code header file. + * \author Adam Dunkels <adam@dunkels.com> + */ + +/* + * Copyright (c) 2002-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: resolv.h,v 1.4 2006/06/11 21:46:37 adam Exp $ + * + */ +#ifndef __RESOLV_H__ +#define __RESOLV_H__ + +typedef int uip_udp_appstate_t; +void resolv_appcall(void); +#define UIP_UDP_APPCALL resolv_appcall + +#include "uipopt.h" + +/** + * Callback function which is called when a hostname is found. + * + * This function must be implemented by the module that uses the DNS + * resolver. It is called when a hostname is found, or when a hostname + * was not found. + * + * \param name A pointer to the name that was looked up. \param + * ipaddr A pointer to a 4-byte array containing the IP address of the + * hostname, or NULL if the hostname could not be found. + */ +void resolv_found(char *name, u16_t *ipaddr); + +/* Functions. */ +void resolv_conf(u16_t *dnsserver); +u16_t *resolv_getserver(void); +void resolv_init(void); +u16_t *resolv_lookup(char *name); +void resolv_query(char *name); + +#endif /* __RESOLV_H__ */ + +/** @} */ diff --git a/uip/apps/smtp/Makefile.smtp b/uip/apps/smtp/Makefile.smtp new file mode 100644 index 0000000..8b3a5aa --- /dev/null +++ b/uip/apps/smtp/Makefile.smtp @@ -0,0 +1 @@ +APP_SOURCES += smtp.c smtp-strings.c memb.c diff --git a/uip/apps/smtp/makestrings b/uip/apps/smtp/makestrings new file mode 100755 index 0000000..bea18a6 --- /dev/null +++ b/uip/apps/smtp/makestrings @@ -0,0 +1,40 @@ +#!/usr/bin/perl + + +sub stringify { + my $name = shift(@_); + open(OUTPUTC, "> $name.c"); + open(OUTPUTH, "> $name.h"); + + open(FILE, "$name"); + + while(<FILE>) { + if(/(.+) "(.+)"/) { + $var = $1; + $data = $2; + + $datan = $data; + $datan =~ s/\\r/\r/g; + $datan =~ s/\\n/\n/g; + $datan =~ s/\\01/\01/g; + $datan =~ s/\\0/\0/g; + + printf(OUTPUTC "const char $var\[%d] = \n", length($datan) + 1); + printf(OUTPUTC "/* \"$data\" */\n"); + printf(OUTPUTC "{"); + for($j = 0; $j < length($datan); $j++) { + printf(OUTPUTC "%#02x, ", unpack("C", substr($datan, $j, 1))); + } + printf(OUTPUTC "};\n"); + + printf(OUTPUTH "extern const char $var\[%d];\n", length($datan) + 1); + + } + } + close(OUTPUTC); + close(OUTPUTH); +} +stringify("smtp-strings"); + +exit 0; + diff --git a/uip/apps/smtp/smtp-strings b/uip/apps/smtp/smtp-strings new file mode 100644 index 0000000..27f639c --- /dev/null +++ b/uip/apps/smtp/smtp-strings @@ -0,0 +1,11 @@ +smtp_220 "220" +smtp_helo "HELO " +smtp_mail_from "MAIL FROM: " +smtp_rcpt_to "RCPT TO: " +smtp_data "DATA\r\n" +smtp_to "To: " +smtp_from "From: " +smtp_subject "Subject: " +smtp_quit "QUIT\r\n" +smtp_crnl "\r\n" +smtp_crnlperiodcrnl "\r\n.\r\n"
\ No newline at end of file diff --git a/uip/apps/smtp/smtp-strings.c b/uip/apps/smtp/smtp-strings.c new file mode 100644 index 0000000..f3981a1 --- /dev/null +++ b/uip/apps/smtp/smtp-strings.c @@ -0,0 +1,70 @@ +/* + * Copyright (c) 2004, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: smtp-strings.c,v 1.3 2006/06/11 21:46:37 adam Exp $ + */ +const char smtp_220[4] = +/* "220" */ +{0x32, 0x32, 0x30, }; +const char smtp_helo[6] = +/* "HELO " */ +{0x48, 0x45, 0x4c, 0x4f, 0x20, }; +const char smtp_mail_from[12] = +/* "MAIL FROM: " */ +{0x4d, 0x41, 0x49, 0x4c, 0x20, 0x46, 0x52, 0x4f, 0x4d, 0x3a, 0x20, }; +const char smtp_rcpt_to[10] = +/* "RCPT TO: " */ +{0x52, 0x43, 0x50, 0x54, 0x20, 0x54, 0x4f, 0x3a, 0x20, }; +const char smtp_data[7] = +/* "DATA\r\n" */ +{0x44, 0x41, 0x54, 0x41, 0xd, 0xa, }; +const char smtp_to[5] = +/* "To: " */ +{0x54, 0x6f, 0x3a, 0x20, }; +const char smtp_cc[5] = +/* "Cc: " */ +{0x43, 0x63, 0x3a, 0x20, }; +const char smtp_from[7] = +/* "From: " */ +{0x46, 0x72, 0x6f, 0x6d, 0x3a, 0x20, }; +const char smtp_subject[10] = +/* "Subject: " */ +{0x53, 0x75, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x3a, 0x20, }; +const char smtp_quit[7] = +/* "QUIT\r\n" */ +{0x51, 0x55, 0x49, 0x54, 0xd, 0xa, }; +const char smtp_crnl[3] = +/* "\r\n" */ +{0xd, 0xa, }; +const char smtp_crnlperiodcrnl[6] = +/* "\r\n.\r\n" */ +{0xd, 0xa, 0x2e, 0xd, 0xa, }; diff --git a/uip/apps/smtp/smtp-strings.h b/uip/apps/smtp/smtp-strings.h new file mode 100644 index 0000000..f5ae68c --- /dev/null +++ b/uip/apps/smtp/smtp-strings.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2004, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: smtp-strings.h,v 1.3 2006/06/11 21:46:37 adam Exp $ + */ +extern const char smtp_220[4]; +extern const char smtp_helo[6]; +extern const char smtp_mail_from[12]; +extern const char smtp_rcpt_to[10]; +extern const char smtp_data[7]; +extern const char smtp_to[5]; +extern const char smtp_cc[5]; +extern const char smtp_from[7]; +extern const char smtp_subject[10]; +extern const char smtp_quit[7]; +extern const char smtp_crnl[3]; +extern const char smtp_crnlperiodcrnl[6]; diff --git a/uip/apps/smtp/smtp.c b/uip/apps/smtp/smtp.c new file mode 100644 index 0000000..a860006 --- /dev/null +++ b/uip/apps/smtp/smtp.c @@ -0,0 +1,262 @@ +/** + * \addtogroup apps + * @{ + */ + +/** + * \defgroup smtp SMTP E-mail sender + * @{ + * + * The Simple Mail Transfer Protocol (SMTP) as defined by RFC821 is + * the standard way of sending and transfering e-mail on the + * Internet. This simple example implementation is intended as an + * example of how to implement protocols in uIP, and is able to send + * out e-mail but has not been extensively tested. + */ + +/** + * \file + * SMTP example implementation + * \author Adam Dunkels <adam@dunkels.com> + */ + +/* + * Copyright (c) 2004, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: smtp.c,v 1.4 2006/06/11 21:46:37 adam Exp $ + */ +#include "smtp.h" + +#include "smtp-strings.h" +#include "psock.h" +#include "uip.h" + +#include <string.h> + +static struct smtp_state s; + +static char *localhostname; +static uip_ipaddr_t smtpserver; + +#define ISO_nl 0x0a +#define ISO_cr 0x0d + +#define ISO_period 0x2e + +#define ISO_2 0x32 +#define ISO_3 0x33 +#define ISO_4 0x34 +#define ISO_5 0x35 + + +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(smtp_thread(void)) +{ + PSOCK_BEGIN(&s.psock); + + PSOCK_READTO(&s.psock, ISO_nl); + + if(strncmp(s.inputbuffer, smtp_220, 3) != 0) { + PSOCK_CLOSE(&s.psock); + smtp_done(2); + PSOCK_EXIT(&s.psock); + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_helo); + PSOCK_SEND_STR(&s.psock, localhostname); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + + PSOCK_READTO(&s.psock, ISO_nl); + + if(s.inputbuffer[0] != ISO_2) { + PSOCK_CLOSE(&s.psock); + smtp_done(3); + PSOCK_EXIT(&s.psock); + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_mail_from); + PSOCK_SEND_STR(&s.psock, s.from); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + + PSOCK_READTO(&s.psock, ISO_nl); + + if(s.inputbuffer[0] != ISO_2) { + PSOCK_CLOSE(&s.psock); + smtp_done(4); + PSOCK_EXIT(&s.psock); + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_rcpt_to); + PSOCK_SEND_STR(&s.psock, s.to); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + + PSOCK_READTO(&s.psock, ISO_nl); + + if(s.inputbuffer[0] != ISO_2) { + PSOCK_CLOSE(&s.psock); + smtp_done(5); + PSOCK_EXIT(&s.psock); + } + + if(s.cc != 0) { + PSOCK_SEND_STR(&s.psock, (char *)smtp_rcpt_to); + PSOCK_SEND_STR(&s.psock, s.cc); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + + PSOCK_READTO(&s.psock, ISO_nl); + + if(s.inputbuffer[0] != ISO_2) { + PSOCK_CLOSE(&s.psock); + smtp_done(6); + PSOCK_EXIT(&s.psock); + } + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_data); + + PSOCK_READTO(&s.psock, ISO_nl); + + if(s.inputbuffer[0] != ISO_3) { + PSOCK_CLOSE(&s.psock); + smtp_done(7); + PSOCK_EXIT(&s.psock); + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_to); + PSOCK_SEND_STR(&s.psock, s.to); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + + if(s.cc != 0) { + PSOCK_SEND_STR(&s.psock, (char *)smtp_cc); + PSOCK_SEND_STR(&s.psock, s.cc); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_from); + PSOCK_SEND_STR(&s.psock, s.from); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + + PSOCK_SEND_STR(&s.psock, (char *)smtp_subject); + PSOCK_SEND_STR(&s.psock, s.subject); + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl); + + PSOCK_SEND(&s.psock, s.msg, s.msglen); + + PSOCK_SEND_STR(&s.psock, (char *)smtp_crnlperiodcrnl); + + PSOCK_READTO(&s.psock, ISO_nl); + if(s.inputbuffer[0] != ISO_2) { + PSOCK_CLOSE(&s.psock); + smtp_done(8); + PSOCK_EXIT(&s.psock); + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_quit); + smtp_done(SMTP_ERR_OK); + PSOCK_END(&s.psock); +} +/*---------------------------------------------------------------------------*/ +void +smtp_appcall(void) +{ + if(uip_closed()) { + s.connected = 0; + return; + } + if(uip_aborted() || uip_timedout()) { + s.connected = 0; + smtp_done(1); + return; + } + smtp_thread(); +} +/*---------------------------------------------------------------------------*/ +/** + * Specificy an SMTP server and hostname. + * + * This function is used to configure the SMTP module with an SMTP + * server and the hostname of the host. + * + * \param lhostname The hostname of the uIP host. + * + * \param server A pointer to a 4-byte array representing the IP + * address of the SMTP server to be configured. + */ +void +smtp_configure(char *lhostname, void *server) +{ + localhostname = lhostname; + uip_ipaddr_copy(smtpserver, server); +} +/*---------------------------------------------------------------------------*/ +/** + * Send an e-mail. + * + * \param to The e-mail address of the receiver of the e-mail. + * \param cc The e-mail address of the CC: receivers of the e-mail. + * \param from The e-mail address of the sender of the e-mail. + * \param subject The subject of the e-mail. + * \param msg The actual e-mail message. + * \param msglen The length of the e-mail message. + */ +unsigned char +smtp_send(char *to, char *cc, char *from, + char *subject, char *msg, u16_t msglen) +{ + struct uip_conn *conn; + + conn = uip_connect(smtpserver, HTONS(25)); + if(conn == NULL) { + return 0; + } + s.connected = 1; + s.to = to; + s.cc = cc; + s.from = from; + s.subject = subject; + s.msg = msg; + s.msglen = msglen; + + PSOCK_INIT(&s.psock, s.inputbuffer, sizeof(s.inputbuffer)); + + return 1; +} +/*---------------------------------------------------------------------------*/ +void +smtp_init(void) +{ + s.connected = 0; +} +/*---------------------------------------------------------------------------*/ +/** @} */ +/** @} */ diff --git a/uip/apps/smtp/smtp.h b/uip/apps/smtp/smtp.h new file mode 100644 index 0000000..44d0766 --- /dev/null +++ b/uip/apps/smtp/smtp.h @@ -0,0 +1,103 @@ + +/** + * \addtogroup smtp + * @{ + */ + + +/** + * \file + * SMTP header file + * \author Adam Dunkels <adam@dunkels.com> + */ + +/* + * Copyright (c) 2002, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: smtp.h,v 1.4 2006/06/11 21:46:37 adam Exp $ + * + */ +#ifndef __SMTP_H__ +#define __SMTP_H__ + +#include "uipopt.h" + +/** + * Error number that signifies a non-error condition. + */ +#define SMTP_ERR_OK 0 + +/** + * Callback function that is called when an e-mail transmission is + * done. + * + * This function must be implemented by the module that uses the SMTP + * module. + * + * \param error The number of the error if an error occured, or + * SMTP_ERR_OK. + */ +void smtp_done(unsigned char error); + +void smtp_init(void); + +/* Functions. */ +void smtp_configure(char *localhostname, u16_t *smtpserver); +unsigned char smtp_send(char *to, char *from, + char *subject, char *msg, + u16_t msglen); +#define SMTP_SEND(to, cc, from, subject, msg) \ + smtp_send(to, cc, from, subject, msg, strlen(msg)) + +void smtp_appcall(void); + +struct smtp_state { + u8_t state; + char *to; + char *from; + char *subject; + char *msg; + u16_t msglen; + + u16_t sentlen, textlen; + u16_t sendptr; + +}; + + +#ifndef UIP_APPCALL +#define UIP_APPCALL smtp_appcall +#endif +typedef struct smtp_state uip_tcp_appstate_t; + + +#endif /* __SMTP_H__ */ + +/** @} */ diff --git a/uip/apps/telnet/Makefile.telnet b/uip/apps/telnet/Makefile.telnet new file mode 100644 index 0000000..8b94786 --- /dev/null +++ b/uip/apps/telnet/Makefile.telnet @@ -0,0 +1 @@ +APP_SOURCES += telnet.c diff --git a/uip/apps/telnet/telnet.c b/uip/apps/telnet/telnet.c new file mode 100644 index 0000000..f72b6fc --- /dev/null +++ b/uip/apps/telnet/telnet.c @@ -0,0 +1,151 @@ +/* + * Copyright (c) 2002, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: telnet.c,v 1.1.2.3 2003/10/06 11:20:45 adam Exp $ + * + */ + +#include "uip.h" + +#include "telnet.h" + +#ifndef NULL +#define NULL (void *)0 +#endif /* NULL */ + +#define FLAG_CLOSE 1 +#define FLAG_ABORT 2 +/*-----------------------------------------------------------------------------------*/ +unsigned char +telnet_send(struct telnet_state *s, char *text, u16_t len) +{ + if(s->text != NULL) { + return 1; + } + s->text = text; + s->textlen = len; + s->sentlen = 0; + return 0; +} +/*-----------------------------------------------------------------------------------*/ +unsigned char +telnet_close(struct telnet_state *s) +{ + s->flags = FLAG_CLOSE; + if(s->text != NULL) { + return 1; + } + return 0; +} +/*-----------------------------------------------------------------------------------*/ +unsigned char +telnet_abort(struct telnet_state *s) +{ + s->flags = FLAG_ABORT; + if(s->text != NULL) { + return 1; + } + return 0; +} +/*-----------------------------------------------------------------------------------*/ +static void +acked(struct telnet_state *s) +{ + s->textlen -= s->sentlen; + if(s->textlen == 0) { + s->text = NULL; + telnet_sent(s); + } else { + s->text += s->sentlen; + } + s->sentlen = 0; +} +/*-----------------------------------------------------------------------------------*/ +static void +senddata(struct telnet_state *s) +{ + if(s->text == NULL) { + uip_send(s->text, 0); + return; + } + if(s->textlen > uip_mss()) { + s->sentlen = uip_mss(); + } else { + s->sentlen = s->textlen; + } + uip_send(s->text, s->sentlen); +} +/*-----------------------------------------------------------------------------------*/ +void telnet_app(void) +{ + struct telnet_state *s = (struct telnet_state *)uip_conn->appstate; + + if(uip_connected()) { + s->flags = 0; + telnet_connected(s); + senddata(s); + return; + } + + if(uip_closed()) { + telnet_closed(s); + } + + if(uip_aborted()) { + telnet_aborted(s); + } + if(uip_timedout()) { + telnet_timedout(s); + } + + + if(s->flags & FLAG_CLOSE) { + uip_close(); + return; + } + if(s->flags & FLAG_ABORT) { + uip_abort(); + return; + } + if(uip_acked()) { + acked(s); + } + if(uip_newdata()) { + telnet_newdata(s, (char *)uip_appdata, uip_datalen()); + } + if(uip_rexmit() || + uip_newdata() || + uip_acked()) { + senddata(s); + } else if(uip_poll()) { + senddata(s); + } +} +/*-----------------------------------------------------------------------------------*/ diff --git a/uip/apps/telnet/telnet.h b/uip/apps/telnet/telnet.h new file mode 100644 index 0000000..a48c8ee --- /dev/null +++ b/uip/apps/telnet/telnet.h @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2002, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: telnet.h,v 1.1.2.4 2003/10/06 22:56:45 adam Exp $ + * + */ +#ifndef __TELNET_H__ +#define __TELNET_H__ + +struct telnet_state { + unsigned char flags; + char *text; + u16_t textlen; + u16_t sentlen; +}; + +typedef struct telnet_state uip_tcp_appstate_t; +void telnet_app(void); + +#ifndef UIP_APPCALL +#define UIP_APPCALL telnet_app +#endif + +#ifndef UIP_APPSTATE_SIZE +#define UIP_APPSTATE_SIZE (sizeof(struct telnet_state)) +#endif + + +unsigned char telnet_send(struct telnet_state *s, char *text, u16_t len); +unsigned char telnet_close(struct telnet_state *s); +unsigned char telnet_abort(struct telnet_state *s); + +/* Callbacks, must be implemented by the caller. */ +void telnet_connected(struct telnet_state *s); +void telnet_closed(struct telnet_state *s); +void telnet_sent(struct telnet_state *s); +void telnet_aborted(struct telnet_state *s); +void telnet_timedout(struct telnet_state *s); +void telnet_newdata(struct telnet_state *s, char *data, u16_t len); +#endif /* __TELNET_H__ */ diff --git a/uip/apps/telnetd/Makefile.telnetd b/uip/apps/telnetd/Makefile.telnetd new file mode 100644 index 0000000..afb1b59 --- /dev/null +++ b/uip/apps/telnetd/Makefile.telnetd @@ -0,0 +1 @@ +APP_SOURCES += telnetd.c shell.c memb.c diff --git a/uip/apps/telnetd/shell.c b/uip/apps/telnetd/shell.c new file mode 100644 index 0000000..9345cae --- /dev/null +++ b/uip/apps/telnetd/shell.c @@ -0,0 +1,123 @@ + /* + * Copyright (c) 2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: shell.c,v 1.1 2006/06/07 09:43:54 adam Exp $ + * + */ + +#include "shell.h" + +#include <string.h> + +struct ptentry { + char *commandstr; + void (* pfunc)(char *str); +}; + +#define SHELL_PROMPT "uIP 1.0> " + +/*---------------------------------------------------------------------------*/ +static void +parse(register char *str, struct ptentry *t) +{ + struct ptentry *p; + for(p = t; p->commandstr != NULL; ++p) { + if(strncmp(p->commandstr, str, strlen(p->commandstr)) == 0) { + break; + } + } + + p->pfunc(str); +} +/*---------------------------------------------------------------------------*/ +static void +inttostr(register char *str, unsigned int i) +{ + str[0] = '0' + i / 100; + if(str[0] == '0') { + str[0] = ' '; + } + str[1] = '0' + (i / 10) % 10; + if(str[0] == ' ' && str[1] == '0') { + str[1] = ' '; + } + str[2] = '0' + i % 10; + str[3] = ' '; + str[4] = 0; +} +/*---------------------------------------------------------------------------*/ +static void +help(char *str) +{ + shell_output("Available commands:", ""); + shell_output("stats - show network statistics", ""); + shell_output("conn - show TCP connections", ""); + shell_output("help, ? - show help", ""); + shell_output("exit - exit shell", ""); +} +/*---------------------------------------------------------------------------*/ +static void +unknown(char *str) +{ + if(strlen(str) > 0) { + shell_output("Unknown command: ", str); + } +} +/*---------------------------------------------------------------------------*/ +static struct ptentry parsetab[] = + {{"stats", help}, + {"conn", help}, + {"help", help}, + {"exit", shell_quit}, + {"?", help}, + + /* Default action */ + {NULL, unknown}}; +/*---------------------------------------------------------------------------*/ +void +shell_init(void) +{ +} +/*---------------------------------------------------------------------------*/ +void +shell_start(void) +{ + shell_output("uIP command shell", ""); + shell_output("Type '?' and return for help", ""); + shell_prompt(SHELL_PROMPT); +} +/*---------------------------------------------------------------------------*/ +void +shell_input(char *cmd) +{ + parse(cmd, parsetab); + shell_prompt(SHELL_PROMPT); +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/apps/telnetd/shell.h b/uip/apps/telnetd/shell.h new file mode 100644 index 0000000..b57d7be --- /dev/null +++ b/uip/apps/telnetd/shell.h @@ -0,0 +1,104 @@ +/** + * \file + * Interface for the Contiki shell. + * \author Adam Dunkels <adam@dunkels.com> + * + * Some of the functions declared in this file must be implemented as + * a shell back-end in the architecture specific files of a Contiki + * port. + */ + + +/* + * Copyright (c) 2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the Contiki desktop OS. + * + * $Id: shell.h,v 1.1 2006/06/07 09:43:54 adam Exp $ + * + */ +#ifndef __SHELL_H__ +#define __SHELL_H__ + +/** + * Initialize the shell. + * + * Called when the shell front-end process starts. This function may + * be used to start listening for signals. + */ +void shell_init(void); + +/** + * Start the shell back-end. + * + * Called by the front-end when a new shell is started. + */ +void shell_start(void); + +/** + * Process a shell command. + * + * This function will be called by the shell GUI / telnet server whan + * a command has been entered that should be processed by the shell + * back-end. + * + * \param command The command to be processed. + */ +void shell_input(char *command); + +/** + * Quit the shell. + * + */ +void shell_quit(char *); + + +/** + * Print a string to the shell window. + * + * This function is implemented by the shell GUI / telnet server and + * can be called by the shell back-end to output a string in the + * shell window. The string is automatically appended with a linebreak. + * + * \param str1 The first half of the string to be output. + * \param str2 The second half of the string to be output. + */ +void shell_output(char *str1, char *str2); + +/** + * Print a prompt to the shell window. + * + * This function can be used by the shell back-end to print out a + * prompt to the shell window. + * + * \param prompt The prompt to be printed. + * + */ +void shell_prompt(char *prompt); + +#endif /* __SHELL_H__ */ diff --git a/uip/apps/telnetd/telnetd.c b/uip/apps/telnetd/telnetd.c new file mode 100644 index 0000000..7a5ae85 --- /dev/null +++ b/uip/apps/telnetd/telnetd.c @@ -0,0 +1,350 @@ +/* + * Copyright (c) 2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: telnetd.c,v 1.2 2006/06/07 09:43:54 adam Exp $ + * + */ + +#include "uip.h" +#include "telnetd.h" +#include "memb.h" +#include "shell.h" + +#include <string.h> + +#define ISO_nl 0x0a +#define ISO_cr 0x0d + +struct telnetd_line { + char line[TELNETD_CONF_LINELEN]; +}; +MEMB(linemem, struct telnetd_line, TELNETD_CONF_NUMLINES); + +#define STATE_NORMAL 0 +#define STATE_IAC 1 +#define STATE_WILL 2 +#define STATE_WONT 3 +#define STATE_DO 4 +#define STATE_DONT 5 +#define STATE_CLOSE 6 + +static struct telnetd_state s; + +#define TELNET_IAC 255 +#define TELNET_WILL 251 +#define TELNET_WONT 252 +#define TELNET_DO 253 +#define TELNET_DONT 254 +/*---------------------------------------------------------------------------*/ +static char * +alloc_line(void) +{ + return memb_alloc(&linemem); +} +/*---------------------------------------------------------------------------*/ +static void +dealloc_line(char *line) +{ + memb_free(&linemem, line); +} +/*---------------------------------------------------------------------------*/ +void +shell_quit(char *str) +{ + s.state = STATE_CLOSE; +} +/*---------------------------------------------------------------------------*/ +static void +sendline(char *line) +{ + static unsigned int i; + + for(i = 0; i < TELNETD_CONF_NUMLINES; ++i) { + if(s.lines[i] == NULL) { + s.lines[i] = line; + break; + } + } + if(i == TELNETD_CONF_NUMLINES) { + dealloc_line(line); + } +} +/*---------------------------------------------------------------------------*/ +void +shell_prompt(char *str) +{ + char *line; + line = alloc_line(); + if(line != NULL) { + strncpy(line, str, TELNETD_CONF_LINELEN); + /* petsciiconv_toascii(line, TELNETD_CONF_LINELEN);*/ + sendline(line); + } +} +/*---------------------------------------------------------------------------*/ +void +shell_output(char *str1, char *str2) +{ + static unsigned len; + char *line; + + line = alloc_line(); + if(line != NULL) { + len = strlen(str1); + strncpy(line, str1, TELNETD_CONF_LINELEN); + if(len < TELNETD_CONF_LINELEN) { + strncpy(line + len, str2, TELNETD_CONF_LINELEN - len); + } + len = strlen(line); + if(len < TELNETD_CONF_LINELEN - 2) { + line[len] = ISO_cr; + line[len+1] = ISO_nl; + line[len+2] = 0; + } + /* petsciiconv_toascii(line, TELNETD_CONF_LINELEN);*/ + sendline(line); + } +} +/*---------------------------------------------------------------------------*/ +void +telnetd_init(void) +{ + uip_listen(HTONS(23)); + memb_init(&linemem); + shell_init(); +} +/*---------------------------------------------------------------------------*/ +static void +acked(void) +{ + static unsigned int i; + + while(s.numsent > 0) { + dealloc_line(s.lines[0]); + for(i = 1; i < TELNETD_CONF_NUMLINES; ++i) { + s.lines[i - 1] = s.lines[i]; + } + s.lines[TELNETD_CONF_NUMLINES - 1] = NULL; + --s.numsent; + } +} +/*---------------------------------------------------------------------------*/ +static void +senddata(void) +{ + static char *bufptr, *lineptr; + static int buflen, linelen; + + bufptr = uip_appdata; + buflen = 0; + for(s.numsent = 0; s.numsent < TELNETD_CONF_NUMLINES && + s.lines[s.numsent] != NULL ; ++s.numsent) { + lineptr = s.lines[s.numsent]; + linelen = strlen(lineptr); + if(linelen > TELNETD_CONF_LINELEN) { + linelen = TELNETD_CONF_LINELEN; + } + if(buflen + linelen < uip_mss()) { + memcpy(bufptr, lineptr, linelen); + bufptr += linelen; + buflen += linelen; + } else { + break; + } + } + uip_send(uip_appdata, buflen); +} +/*---------------------------------------------------------------------------*/ +static void +closed(void) +{ + static unsigned int i; + + for(i = 0; i < TELNETD_CONF_NUMLINES; ++i) { + if(s.lines[i] != NULL) { + dealloc_line(s.lines[i]); + } + } +} +/*---------------------------------------------------------------------------*/ +static void +get_char(u8_t c) +{ + if(c == ISO_cr) { + return; + } + + s.buf[(int)s.bufptr] = c; + if(s.buf[(int)s.bufptr] == ISO_nl || + s.bufptr == sizeof(s.buf) - 1) { + if(s.bufptr > 0) { + s.buf[(int)s.bufptr] = 0; + /* petsciiconv_topetscii(s.buf, TELNETD_CONF_LINELEN);*/ + } + shell_input(s.buf); + s.bufptr = 0; + } else { + ++s.bufptr; + } +} +/*---------------------------------------------------------------------------*/ +static void +sendopt(u8_t option, u8_t value) +{ + char *line; + line = alloc_line(); + if(line != NULL) { + line[0] = TELNET_IAC; + line[1] = option; + line[2] = value; + line[3] = 0; + sendline(line); + } +} +/*---------------------------------------------------------------------------*/ +static void +newdata(void) +{ + u16_t len; + u8_t c; + char *dataptr; + + + len = uip_datalen(); + dataptr = (char *)uip_appdata; + + while(len > 0 && s.bufptr < sizeof(s.buf)) { + c = *dataptr; + ++dataptr; + --len; + switch(s.state) { + case STATE_IAC: + if(c == TELNET_IAC) { + get_char(c); + s.state = STATE_NORMAL; + } else { + switch(c) { + case TELNET_WILL: + s.state = STATE_WILL; + break; + case TELNET_WONT: + s.state = STATE_WONT; + break; + case TELNET_DO: + s.state = STATE_DO; + break; + case TELNET_DONT: + s.state = STATE_DONT; + break; + default: + s.state = STATE_NORMAL; + break; + } + } + break; + case STATE_WILL: + /* Reply with a DONT */ + sendopt(TELNET_DONT, c); + s.state = STATE_NORMAL; + break; + + case STATE_WONT: + /* Reply with a DONT */ + sendopt(TELNET_DONT, c); + s.state = STATE_NORMAL; + break; + case STATE_DO: + /* Reply with a WONT */ + sendopt(TELNET_WONT, c); + s.state = STATE_NORMAL; + break; + case STATE_DONT: + /* Reply with a WONT */ + sendopt(TELNET_WONT, c); + s.state = STATE_NORMAL; + break; + case STATE_NORMAL: + if(c == TELNET_IAC) { + s.state = STATE_IAC; + } else { + get_char(c); + } + break; + } + + + } + +} +/*---------------------------------------------------------------------------*/ +void +telnetd_appcall(void) +{ + static unsigned int i; + if(uip_connected()) { + /* tcp_markconn(uip_conn, &s);*/ + for(i = 0; i < TELNETD_CONF_NUMLINES; ++i) { + s.lines[i] = NULL; + } + s.bufptr = 0; + s.state = STATE_NORMAL; + + shell_start(); + } + + if(s.state == STATE_CLOSE) { + s.state = STATE_NORMAL; + uip_close(); + return; + } + + if(uip_closed() || + uip_aborted() || + uip_timedout()) { + closed(); + } + + if(uip_acked()) { + acked(); + } + + if(uip_newdata()) { + newdata(); + } + + if(uip_rexmit() || + uip_newdata() || + uip_acked() || + uip_connected() || + uip_poll()) { + senddata(); + } +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/apps/telnetd/telnetd.h b/uip/apps/telnetd/telnetd.h new file mode 100644 index 0000000..2ee8acd --- /dev/null +++ b/uip/apps/telnetd/telnetd.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: telnetd.h,v 1.2 2006/06/07 09:43:54 adam Exp $ + * + */ +#ifndef __TELNETD_H__ +#define __TELNETD_H__ + +#include "uipopt.h" + +void telnetd_appcall(void); + +#ifndef TELNETD_CONF_LINELEN +#define TELNETD_CONF_LINELEN 40 +#endif +#ifndef TELNETD_CONF_NUMLINES +#define TELNETD_CONF_NUMLINES 16 +#endif + +struct telnetd_state { + char *lines[TELNETD_CONF_NUMLINES]; + char buf[TELNETD_CONF_LINELEN]; + char bufptr; + u8_t numsent; + u8_t state; +}; + +typedef struct telnetd_state uip_tcp_appstate_t; + +#ifndef UIP_APPCALL +#define UIP_APPCALL telnetd_appcall +#endif + +#endif /* __TELNETD_H__ */ diff --git a/uip/apps/webclient/Makefile.webclient b/uip/apps/webclient/Makefile.webclient new file mode 100644 index 0000000..e6e7f08 --- /dev/null +++ b/uip/apps/webclient/Makefile.webclient @@ -0,0 +1 @@ +APP_SOURCES += webclient-strings.c webclient.c diff --git a/uip/apps/webclient/makestrings b/uip/apps/webclient/makestrings new file mode 100755 index 0000000..6dec075 --- /dev/null +++ b/uip/apps/webclient/makestrings @@ -0,0 +1,40 @@ +#!/usr/bin/perl + + +sub stringify { + my $name = shift(@_); + open(OUTPUTC, "> $name.c"); + open(OUTPUTH, "> $name.h"); + + open(FILE, "$name"); + + while(<FILE>) { + if(/(.+) "(.+)"/) { + $var = $1; + $data = $2; + + $datan = $data; + $datan =~ s/\\r/\r/g; + $datan =~ s/\\n/\n/g; + $datan =~ s/\\01/\01/g; + $datan =~ s/\\0/\0/g; + + printf(OUTPUTC "const char $var\[%d] = \n", length($datan) + 1); + printf(OUTPUTC "/* \"$data\" */\n"); + printf(OUTPUTC "{"); + for($j = 0; $j < length($datan); $j++) { + printf(OUTPUTC "%#02x, ", unpack("C", substr($datan, $j, 1))); + } + printf(OUTPUTC "0 };\n"); + + printf(OUTPUTH "extern const char $var\[%d];\n", length($datan) + 1); + + } + } + close(OUTPUTC); + close(OUTPUTH); +} +stringify("webclient-strings"); + +exit 0; + diff --git a/uip/apps/webclient/webclient-strings b/uip/apps/webclient/webclient-strings new file mode 100644 index 0000000..a331397 --- /dev/null +++ b/uip/apps/webclient/webclient-strings @@ -0,0 +1,31 @@ +http_http "http://" +http_200 "200 " +http_301 "301 " +http_302 "302 " +http_get "GET " +http_10 "HTTP/1.0" +http_11 "HTTP/1.1" +http_content_type "content-type: " +http_texthtml "text/html" +http_location "location: " +http_host "host: " +http_crnl "\r\n" +http_index_html "/index.html" +http_404_html "/404.html" +http_content_type_html "Content-type: text/html\r\n\r\n" +http_content_type_css "Content-type: text/css\r\n\r\n" +http_content_type_text "Content-type: text/text\r\n\r\n" +http_content_type_png "Content-type: image/png\r\n\r\n" +http_content_type_gif "Content-type: image/gif\r\n\r\n" +http_content_type_jpg "Content-type: image/jpeg\r\n\r\n" +http_content_type_binary "Content-type: application/octet-stream\r\n\r\n" +http_html ".html" +http_shtml ".shtml" +http_htm ".htm" +http_css ".css" +http_png ".png" +http_gif ".gif" +http_jpg ".jpg" +http_text ".text" +http_txt ".txt" +http_user_agent_fields "Connection: close\r\nUser-Agent: uIP/1.0 (; http://www.sics.se/~adam/uip/)\r\n\r\n" diff --git a/uip/apps/webclient/webclient-strings.c b/uip/apps/webclient/webclient-strings.c new file mode 100644 index 0000000..9472330 --- /dev/null +++ b/uip/apps/webclient/webclient-strings.c @@ -0,0 +1,93 @@ +const char http_http[8] = +/* "http://" */ +{0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0 }; +const char http_200[5] = +/* "200 " */ +{0x32, 0x30, 0x30, 0x20, 0 }; +const char http_301[5] = +/* "301 " */ +{0x33, 0x30, 0x31, 0x20, 0 }; +const char http_302[5] = +/* "302 " */ +{0x33, 0x30, 0x32, 0x20, 0 }; +const char http_get[5] = +/* "GET " */ +{0x47, 0x45, 0x54, 0x20, 0 }; +const char http_10[9] = +/* "HTTP/1.0" */ +{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0 }; +const char http_11[9] = +/* "HTTP/1.1" */ +{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x31, 0 }; +const char http_content_type[15] = +/* "content-type: " */ +{0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0 }; +const char http_texthtml[10] = +/* "text/html" */ +{0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0 }; +const char http_location[11] = +/* "location: " */ +{0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, 0 }; +const char http_host[7] = +/* "host: " */ +{0x68, 0x6f, 0x73, 0x74, 0x3a, 0x20, 0 }; +const char http_crnl[3] = +/* "\r\n" */ +{0xd, 0xa, 0 }; +const char http_index_html[12] = +/* "/index.html" */ +{0x2f, 0x69, 0x6e, 0x64, 0x65, 0x78, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0 }; +const char http_404_html[10] = +/* "/404.html" */ +{0x2f, 0x34, 0x30, 0x34, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0 }; +const char http_content_type_html[28] = +/* "Content-type: text/html\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0xd, 0xa, 0xd, 0xa, 0 }; +const char http_content_type_css [27] = +/* "Content-type: text/css\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x63, 0x73, 0x73, 0xd, 0xa, 0xd, 0xa, 0 }; +const char http_content_type_text[28] = +/* "Content-type: text/text\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x74, 0x65, 0x78, 0x74, 0xd, 0xa, 0xd, 0xa, 0 }; +const char http_content_type_png [28] = +/* "Content-type: image/png\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x70, 0x6e, 0x67, 0xd, 0xa, 0xd, 0xa, 0 }; +const char http_content_type_gif [28] = +/* "Content-type: image/gif\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x67, 0x69, 0x66, 0xd, 0xa, 0xd, 0xa, 0 }; +const char http_content_type_jpg [29] = +/* "Content-type: image/jpeg\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x6a, 0x70, 0x65, 0x67, 0xd, 0xa, 0xd, 0xa, 0 }; +const char http_content_type_binary[43] = +/* "Content-type: application/octet-stream\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x61, 0x70, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x6f, 0x63, 0x74, 0x65, 0x74, 0x2d, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6d, 0xd, 0xa, 0xd, 0xa, 0 }; +const char http_html[6] = +/* ".html" */ +{0x2e, 0x68, 0x74, 0x6d, 0x6c, 0 }; +const char http_shtml[7] = +/* ".shtml" */ +{0x2e, 0x73, 0x68, 0x74, 0x6d, 0x6c, 0 }; +const char http_htm[5] = +/* ".htm" */ +{0x2e, 0x68, 0x74, 0x6d, 0 }; +const char http_css[5] = +/* ".css" */ +{0x2e, 0x63, 0x73, 0x73, 0 }; +const char http_png[5] = +/* ".png" */ +{0x2e, 0x70, 0x6e, 0x67, 0 }; +const char http_gif[5] = +/* ".gif" */ +{0x2e, 0x67, 0x69, 0x66, 0 }; +const char http_jpg[5] = +/* ".jpg" */ +{0x2e, 0x6a, 0x70, 0x67, 0 }; +const char http_text[6] = +/* ".text" */ +{0x2e, 0x74, 0x65, 0x78, 0x74, 0 }; +const char http_txt[5] = +/* ".txt" */ +{0x2e, 0x74, 0x78, 0x74, 0 }; +const char http_user_agent_fields[77] = +/* "Connection: close\r\nUser-Agent: uIP/1.0 (; http://www.sics.se/~adam/uip/)\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0xd, 0xa, 0x55, 0x73, 0x65, 0x72, 0x2d, 0x41, 0x67, 0x65, 0x6e, 0x74, 0x3a, 0x20, 0x75, 0x49, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x28, 0x3b, 0x20, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x73, 0x69, 0x63, 0x73, 0x2e, 0x73, 0x65, 0x2f, 0x7e, 0x61, 0x64, 0x61, 0x6d, 0x2f, 0x75, 0x69, 0x70, 0x2f, 0x29, 0xd, 0xa, 0xd, 0xa, 0 }; diff --git a/uip/apps/webclient/webclient-strings.h b/uip/apps/webclient/webclient-strings.h new file mode 100644 index 0000000..9e3ec93 --- /dev/null +++ b/uip/apps/webclient/webclient-strings.h @@ -0,0 +1,31 @@ +extern const char http_http[8]; +extern const char http_200[5]; +extern const char http_301[5]; +extern const char http_302[5]; +extern const char http_get[5]; +extern const char http_10[9]; +extern const char http_11[9]; +extern const char http_content_type[15]; +extern const char http_texthtml[10]; +extern const char http_location[11]; +extern const char http_host[7]; +extern const char http_crnl[3]; +extern const char http_index_html[12]; +extern const char http_404_html[10]; +extern const char http_content_type_html[28]; +extern const char http_content_type_css [27]; +extern const char http_content_type_text[28]; +extern const char http_content_type_png [28]; +extern const char http_content_type_gif [28]; +extern const char http_content_type_jpg [29]; +extern const char http_content_type_binary[43]; +extern const char http_html[6]; +extern const char http_shtml[7]; +extern const char http_htm[5]; +extern const char http_css[5]; +extern const char http_png[5]; +extern const char http_gif[5]; +extern const char http_jpg[5]; +extern const char http_text[6]; +extern const char http_txt[5]; +extern const char http_user_agent_fields[77]; diff --git a/uip/apps/webclient/webclient.c b/uip/apps/webclient/webclient.c new file mode 100644 index 0000000..746c008 --- /dev/null +++ b/uip/apps/webclient/webclient.c @@ -0,0 +1,439 @@ +/** + * \addtogroup apps + * @{ + */ + +/** + * \defgroup webclient Web client + * @{ + * + * This example shows a HTTP client that is able to download web pages + * and files from web servers. It requires a number of callback + * functions to be implemented by the module that utilizes the code: + * webclient_datahandler(), webclient_connected(), + * webclient_timedout(), webclient_aborted(), webclient_closed(). + */ + +/** + * \file + * Implementation of the HTTP client. + * \author Adam Dunkels <adam@dunkels.com> + */ + +/* + * Copyright (c) 2002, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: webclient.c,v 1.2 2006/06/11 21:46:37 adam Exp $ + * + */ + +#include "uip.h" +#include "uiplib.h" +#include "webclient.h" +#include "resolv.h" + +#include <string.h> + +#define WEBCLIENT_TIMEOUT 100 + +#define WEBCLIENT_STATE_STATUSLINE 0 +#define WEBCLIENT_STATE_HEADERS 1 +#define WEBCLIENT_STATE_DATA 2 +#define WEBCLIENT_STATE_CLOSE 3 + +#define HTTPFLAG_NONE 0 +#define HTTPFLAG_OK 1 +#define HTTPFLAG_MOVED 2 +#define HTTPFLAG_ERROR 3 + + +#define ISO_nl 0x0a +#define ISO_cr 0x0d +#define ISO_space 0x20 + + +static struct webclient_state s; + +/*-----------------------------------------------------------------------------------*/ +char * +webclient_mimetype(void) +{ + return s.mimetype; +} +/*-----------------------------------------------------------------------------------*/ +char * +webclient_filename(void) +{ + return s.file; +} +/*-----------------------------------------------------------------------------------*/ +char * +webclient_hostname(void) +{ + return s.host; +} +/*-----------------------------------------------------------------------------------*/ +unsigned short +webclient_port(void) +{ + return s.port; +} +/*-----------------------------------------------------------------------------------*/ +void +webclient_init(void) +{ + +} +/*-----------------------------------------------------------------------------------*/ +static void +init_connection(void) +{ + s.state = WEBCLIENT_STATE_STATUSLINE; + + s.getrequestleft = sizeof(http_get) - 1 + 1 + + sizeof(http_10) - 1 + + sizeof(http_crnl) - 1 + + sizeof(http_host) - 1 + + sizeof(http_crnl) - 1 + + strlen(http_user_agent_fields) + + strlen(s.file) + strlen(s.host); + s.getrequestptr = 0; + + s.httpheaderlineptr = 0; +} +/*-----------------------------------------------------------------------------------*/ +void +webclient_close(void) +{ + s.state = WEBCLIENT_STATE_CLOSE; +} +/*-----------------------------------------------------------------------------------*/ +unsigned char +webclient_get(char *host, u16_t port, char *file) +{ + struct uip_conn *conn; + uip_ipaddr_t *ipaddr; + static uip_ipaddr_t addr; + + /* First check if the host is an IP address. */ + ipaddr = &addr; + if(uiplib_ipaddrconv(host, (unsigned char *)addr) == 0) { + ipaddr = (uip_ipaddr_t *)resolv_lookup(host); + + if(ipaddr == NULL) { + return 0; + } + } + + conn = uip_connect(ipaddr, htons(port)); + + if(conn == NULL) { + return 0; + } + + s.port = port; + strncpy(s.file, file, sizeof(s.file)); + strncpy(s.host, host, sizeof(s.host)); + + init_connection(); + return 1; +} +/*-----------------------------------------------------------------------------------*/ +static unsigned char * +copy_string(unsigned char *dest, + const unsigned char *src, unsigned char len) +{ + strncpy(dest, src, len); + return dest + len; +} +/*-----------------------------------------------------------------------------------*/ +static void +senddata(void) +{ + u16_t len; + char *getrequest; + char *cptr; + + if(s.getrequestleft > 0) { + cptr = getrequest = (char *)uip_appdata; + + cptr = copy_string(cptr, http_get, sizeof(http_get) - 1); + cptr = copy_string(cptr, s.file, strlen(s.file)); + *cptr++ = ISO_space; + cptr = copy_string(cptr, http_10, sizeof(http_10) - 1); + + cptr = copy_string(cptr, http_crnl, sizeof(http_crnl) - 1); + + cptr = copy_string(cptr, http_host, sizeof(http_host) - 1); + cptr = copy_string(cptr, s.host, strlen(s.host)); + cptr = copy_string(cptr, http_crnl, sizeof(http_crnl) - 1); + + cptr = copy_string(cptr, http_user_agent_fields, + strlen(http_user_agent_fields)); + + len = s.getrequestleft > uip_mss()? + uip_mss(): + s.getrequestleft; + uip_send(&(getrequest[s.getrequestptr]), len); + } +} +/*-----------------------------------------------------------------------------------*/ +static void +acked(void) +{ + u16_t len; + + if(s.getrequestleft > 0) { + len = s.getrequestleft > uip_mss()? + uip_mss(): + s.getrequestleft; + s.getrequestleft -= len; + s.getrequestptr += len; + } +} +/*-----------------------------------------------------------------------------------*/ +static u16_t +parse_statusline(u16_t len) +{ + char *cptr; + + while(len > 0 && s.httpheaderlineptr < sizeof(s.httpheaderline)) { + s.httpheaderline[s.httpheaderlineptr] = *(char *)uip_appdata; + ++((char *)uip_appdata); + --len; + if(s.httpheaderline[s.httpheaderlineptr] == ISO_nl) { + + if((strncmp(s.httpheaderline, http_10, + sizeof(http_10) - 1) == 0) || + (strncmp(s.httpheaderline, http_11, + sizeof(http_11) - 1) == 0)) { + cptr = &(s.httpheaderline[9]); + s.httpflag = HTTPFLAG_NONE; + if(strncmp(cptr, http_200, sizeof(http_200) - 1) == 0) { + /* 200 OK */ + s.httpflag = HTTPFLAG_OK; + } else if(strncmp(cptr, http_301, sizeof(http_301) - 1) == 0 || + strncmp(cptr, http_302, sizeof(http_302) - 1) == 0) { + /* 301 Moved permanently or 302 Found. Location: header line + will contain thw new location. */ + s.httpflag = HTTPFLAG_MOVED; + } else { + s.httpheaderline[s.httpheaderlineptr - 1] = 0; + } + } else { + uip_abort(); + webclient_aborted(); + return 0; + } + + /* We're done parsing the status line, so we reset the pointer + and start parsing the HTTP headers.*/ + s.httpheaderlineptr = 0; + s.state = WEBCLIENT_STATE_HEADERS; + break; + } else { + ++s.httpheaderlineptr; + } + } + return len; +} +/*-----------------------------------------------------------------------------------*/ +static char +casecmp(char *str1, const char *str2, char len) +{ + static char c; + + while(len > 0) { + c = *str1; + /* Force lower-case characters. */ + if(c & 0x40) { + c |= 0x20; + } + if(*str2 != c) { + return 1; + } + ++str1; + ++str2; + --len; + } + return 0; +} +/*-----------------------------------------------------------------------------------*/ +static u16_t +parse_headers(u16_t len) +{ + char *cptr; + static unsigned char i; + + while(len > 0 && s.httpheaderlineptr < sizeof(s.httpheaderline)) { + s.httpheaderline[s.httpheaderlineptr] = *(char *)uip_appdata; + ++((char *)uip_appdata); + --len; + if(s.httpheaderline[s.httpheaderlineptr] == ISO_nl) { + /* We have an entire HTTP header line in s.httpheaderline, so + we parse it. */ + if(s.httpheaderline[0] == ISO_cr) { + /* This was the last header line (i.e., and empty "\r\n"), so + we are done with the headers and proceed with the actual + data. */ + s.state = WEBCLIENT_STATE_DATA; + return len; + } + + s.httpheaderline[s.httpheaderlineptr - 1] = 0; + /* Check for specific HTTP header fields. */ + if(casecmp(s.httpheaderline, http_content_type, + sizeof(http_content_type) - 1) == 0) { + /* Found Content-type field. */ + cptr = strchr(s.httpheaderline, ';'); + if(cptr != NULL) { + *cptr = 0; + } + strncpy(s.mimetype, s.httpheaderline + + sizeof(http_content_type) - 1, sizeof(s.mimetype)); + } else if(casecmp(s.httpheaderline, http_location, + sizeof(http_location) - 1) == 0) { + cptr = s.httpheaderline + + sizeof(http_location) - 1; + + if(strncmp(cptr, http_http, 7) == 0) { + cptr += 7; + for(i = 0; i < s.httpheaderlineptr - 7; ++i) { + if(*cptr == 0 || + *cptr == '/' || + *cptr == ' ' || + *cptr == ':') { + s.host[i] = 0; + break; + } + s.host[i] = *cptr; + ++cptr; + } + } + strncpy(s.file, cptr, sizeof(s.file)); + /* s.file[s.httpheaderlineptr - i] = 0;*/ + } + + + /* We're done parsing, so we reset the pointer and start the + next line. */ + s.httpheaderlineptr = 0; + } else { + ++s.httpheaderlineptr; + } + } + return len; +} +/*-----------------------------------------------------------------------------------*/ +static void +newdata(void) +{ + u16_t len; + + len = uip_datalen(); + + if(s.state == WEBCLIENT_STATE_STATUSLINE) { + len = parse_statusline(len); + } + + if(s.state == WEBCLIENT_STATE_HEADERS && len > 0) { + len = parse_headers(len); + } + + if(len > 0 && s.state == WEBCLIENT_STATE_DATA && + s.httpflag != HTTPFLAG_MOVED) { + webclient_datahandler((char *)uip_appdata, len); + } +} +/*-----------------------------------------------------------------------------------*/ +void +webclient_appcall(void) +{ + if(uip_connected()) { + s.timer = 0; + s.state = WEBCLIENT_STATE_STATUSLINE; + senddata(); + webclient_connected(); + return; + } + + if(s.state == WEBCLIENT_STATE_CLOSE) { + webclient_closed(); + uip_abort(); + return; + } + + if(uip_aborted()) { + webclient_aborted(); + } + if(uip_timedout()) { + webclient_timedout(); + } + + + if(uip_acked()) { + s.timer = 0; + acked(); + } + if(uip_newdata()) { + s.timer = 0; + newdata(); + } + if(uip_rexmit() || + uip_newdata() || + uip_acked()) { + senddata(); + } else if(uip_poll()) { + ++s.timer; + if(s.timer == WEBCLIENT_TIMEOUT) { + webclient_timedout(); + uip_abort(); + return; + } + /* senddata();*/ + } + + if(uip_closed()) { + if(s.httpflag != HTTPFLAG_MOVED) { + /* Send NULL data to signal EOF. */ + webclient_datahandler(NULL, 0); + } else { + if(resolv_lookup(s.host) == NULL) { + resolv_query(s.host); + } + webclient_get(s.host, s.port, s.file); + } + } +} +/*-----------------------------------------------------------------------------------*/ + +/** @} */ +/** @} */ diff --git a/uip/apps/webclient/webclient.h b/uip/apps/webclient/webclient.h new file mode 100644 index 0000000..44cb95c --- /dev/null +++ b/uip/apps/webclient/webclient.h @@ -0,0 +1,228 @@ +/** + * \addtogroup webclient + * @{ + */ + +/** + * \file + * Header file for the HTTP client. + * \author Adam Dunkels <adam@dunkels.com> + */ + +/* + * Copyright (c) 2002, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: webclient.h,v 1.2 2006/06/11 21:46:37 adam Exp $ + * + */ +#ifndef __WEBCLIENT_H__ +#define __WEBCLIENT_H__ + + +#include "webclient-strings.h" +#include "uipopt.h" + +#define WEBCLIENT_CONF_MAX_URLLEN 100 + +struct webclient_state { + u8_t timer; + u8_t state; + u8_t httpflag; + + u16_t port; + char host[40]; + char file[WEBCLIENT_CONF_MAX_URLLEN]; + u16_t getrequestptr; + u16_t getrequestleft; + + char httpheaderline[200]; + u16_t httpheaderlineptr; + + char mimetype[32]; +}; + +typedef struct webclient_state uip_tcp_appstate_t; +#define UIP_APPCALL webclient_appcall + +/** + * Callback function that is called from the webclient code when HTTP + * data has been received. + * + * This function must be implemented by the module that uses the + * webclient code. The function is called from the webclient module + * when HTTP data has been received. The function is not called when + * HTTP headers are received, only for the actual data. + * + * \note This function is called many times, repetedly, when data is + * being received, and not once when all data has been received. + * + * \param data A pointer to the data that has been received. + * \param len The length of the data that has been received. + */ +void webclient_datahandler(char *data, u16_t len); + +/** + * Callback function that is called from the webclient code when the + * HTTP connection has been connected to the web server. + * + * This function must be implemented by the module that uses the + * webclient code. + */ +void webclient_connected(void); + +/** + * Callback function that is called from the webclient code if the + * HTTP connection to the web server has timed out. + * + * This function must be implemented by the module that uses the + * webclient code. + */ +void webclient_timedout(void); + +/** + * Callback function that is called from the webclient code if the + * HTTP connection to the web server has been aborted by the web + * server. + * + * This function must be implemented by the module that uses the + * webclient code. + */ +void webclient_aborted(void); + +/** + * Callback function that is called from the webclient code when the + * HTTP connection to the web server has been closed. + * + * This function must be implemented by the module that uses the + * webclient code. + */ +void webclient_closed(void); + + + +/** + * Initialize the webclient module. + */ +void webclient_init(void); + +/** + * Open an HTTP connection to a web server and ask for a file using + * the GET method. + * + * This function opens an HTTP connection to the specified web server + * and requests the specified file using the GET method. When the HTTP + * connection has been connected, the webclient_connected() callback + * function is called and when the HTTP data arrives the + * webclient_datahandler() callback function is called. + * + * The callback function webclient_timedout() is called if the web + * server could not be contacted, and the webclient_aborted() callback + * function is called if the HTTP connection is aborted by the web + * server. + * + * When the HTTP request has been completed and the HTTP connection is + * closed, the webclient_closed() callback function will be called. + * + * \note If the function is passed a host name, it must already be in + * the resolver cache in order for the function to connect to the web + * server. It is therefore up to the calling module to implement the + * resolver calls and the signal handler used for reporting a resolv + * query answer. + * + * \param host A pointer to a string containing either a host name or + * a numerical IP address in dotted decimal notation (e.g., 192.168.23.1). + * + * \param port The port number to which to connect, in host byte order. + * + * \param file A pointer to the name of the file to get. + * + * \retval 0 if the host name could not be found in the cache, or + * if a TCP connection could not be created. + * + * \retval 1 if the connection was initiated. + */ +unsigned char webclient_get(char *host, u16_t port, char *file); + +/** + * Close the currently open HTTP connection. + */ +void webclient_close(void); +void webclient_appcall(void); + +/** + * Obtain the MIME type of the current HTTP data stream. + * + * \return A pointer to a string contaning the MIME type. The string + * may be empty if no MIME type was reported by the web server. + */ +char *webclient_mimetype(void); + +/** + * Obtain the filename of the current HTTP data stream. + * + * The filename of an HTTP request may be changed by the web server, + * and may therefore not be the same as when the original GET request + * was made with webclient_get(). This function is used for obtaining + * the current filename. + * + * \return A pointer to the current filename. + */ +char *webclient_filename(void); + +/** + * Obtain the hostname of the current HTTP data stream. + * + * The hostname of the web server of an HTTP request may be changed + * by the web server, and may therefore not be the same as when the + * original GET request was made with webclient_get(). This function + * is used for obtaining the current hostname. + * + * \return A pointer to the current hostname. + */ +char *webclient_hostname(void); + +/** + * Obtain the port number of the current HTTP data stream. + * + * The port number of an HTTP request may be changed by the web + * server, and may therefore not be the same as when the original GET + * request was made with webclient_get(). This function is used for + * obtaining the current port number. + * + * \return The port number of the current HTTP data stream, in host byte order. + */ +unsigned short webclient_port(void); + + + +#endif /* __WEBCLIENT_H__ */ + +/** @} */ diff --git a/uip/apps/webserver/Makefile.webserver b/uip/apps/webserver/Makefile.webserver new file mode 100644 index 0000000..7d3e086 --- /dev/null +++ b/uip/apps/webserver/Makefile.webserver @@ -0,0 +1 @@ +APP_SOURCES += httpd.c http-strings.c httpd-fs.c httpd-cgi.c diff --git a/uip/apps/webserver/http-strings b/uip/apps/webserver/http-strings new file mode 100644 index 0000000..d0b9121 --- /dev/null +++ b/uip/apps/webserver/http-strings @@ -0,0 +1,35 @@ +http_http "http://" +http_200 "200 " +http_301 "301 " +http_302 "302 " +http_get "GET " +http_10 "HTTP/1.0" +http_11 "HTTP/1.1" +http_content_type "content-type: " +http_texthtml "text/html" +http_location "location: " +http_host "host: " +http_crnl "\r\n" +http_index_html "/index.html" +http_404_html "/404.html" +http_referer "Referer:" +http_header_200 "HTTP/1.0 200 OK\r\nServer: uIP/1.0 http://www.sics.se/~adam/uip/\r\nConnection: close\r\n" +http_header_404 "HTTP/1.0 404 Not found\r\nServer: uIP/1.0 http://www.sics.se/~adam/uip/\r\nConnection: close\r\n" +http_content_type_plain "Content-type: text/plain\r\n\r\n" +http_content_type_html "Content-type: text/html\r\n\r\n" +http_content_type_css "Content-type: text/css\r\n\r\n" +http_content_type_text "Content-type: text/text\r\n\r\n" +http_content_type_png "Content-type: image/png\r\n\r\n" +http_content_type_gif "Content-type: image/gif\r\n\r\n" +http_content_type_jpg "Content-type: image/jpeg\r\n\r\n" +http_content_type_binary "Content-type: application/octet-stream\r\n\r\n" +http_html ".html" +http_shtml ".shtml" +http_htm ".htm" +http_css ".css" +http_png ".png" +http_gif ".gif" +http_jpg ".jpg" +http_text ".txt" +http_txt ".txt" + diff --git a/uip/apps/webserver/http-strings.c b/uip/apps/webserver/http-strings.c new file mode 100644 index 0000000..0d822ba --- /dev/null +++ b/uip/apps/webserver/http-strings.c @@ -0,0 +1,102 @@ +const char http_http[8] = +/* "http://" */ +{0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, }; +const char http_200[5] = +/* "200 " */ +{0x32, 0x30, 0x30, 0x20, }; +const char http_301[5] = +/* "301 " */ +{0x33, 0x30, 0x31, 0x20, }; +const char http_302[5] = +/* "302 " */ +{0x33, 0x30, 0x32, 0x20, }; +const char http_get[5] = +/* "GET " */ +{0x47, 0x45, 0x54, 0x20, }; +const char http_10[9] = +/* "HTTP/1.0" */ +{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, }; +const char http_11[9] = +/* "HTTP/1.1" */ +{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x31, }; +const char http_content_type[15] = +/* "content-type: " */ +{0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, }; +const char http_texthtml[10] = +/* "text/html" */ +{0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_location[11] = +/* "location: " */ +{0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, }; +const char http_host[7] = +/* "host: " */ +{0x68, 0x6f, 0x73, 0x74, 0x3a, 0x20, }; +const char http_crnl[3] = +/* "\r\n" */ +{0xd, 0xa, }; +const char http_index_html[12] = +/* "/index.html" */ +{0x2f, 0x69, 0x6e, 0x64, 0x65, 0x78, 0x2e, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_404_html[10] = +/* "/404.html" */ +{0x2f, 0x34, 0x30, 0x34, 0x2e, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_referer[9] = +/* "Referer:" */ +{0x52, 0x65, 0x66, 0x65, 0x72, 0x65, 0x72, 0x3a, }; +const char http_header_200[84] = +/* "HTTP/1.0 200 OK\r\nServer: uIP/1.0 http://www.sics.se/~adam/uip/\r\nConnection: close\r\n" */ +{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x32, 0x30, 0x30, 0x20, 0x4f, 0x4b, 0xd, 0xa, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x3a, 0x20, 0x75, 0x49, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x73, 0x69, 0x63, 0x73, 0x2e, 0x73, 0x65, 0x2f, 0x7e, 0x61, 0x64, 0x61, 0x6d, 0x2f, 0x75, 0x69, 0x70, 0x2f, 0xd, 0xa, 0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0xd, 0xa, }; +const char http_header_404[91] = +/* "HTTP/1.0 404 Not found\r\nServer: uIP/1.0 http://www.sics.se/~adam/uip/\r\nConnection: close\r\n" */ +{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x34, 0x30, 0x34, 0x20, 0x4e, 0x6f, 0x74, 0x20, 0x66, 0x6f, 0x75, 0x6e, 0x64, 0xd, 0xa, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x3a, 0x20, 0x75, 0x49, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x73, 0x69, 0x63, 0x73, 0x2e, 0x73, 0x65, 0x2f, 0x7e, 0x61, 0x64, 0x61, 0x6d, 0x2f, 0x75, 0x69, 0x70, 0x2f, 0xd, 0xa, 0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0xd, 0xa, }; +const char http_content_type_plain[29] = +/* "Content-type: text/plain\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x70, 0x6c, 0x61, 0x69, 0x6e, 0xd, 0xa, 0xd, 0xa, }; +const char http_content_type_html[28] = +/* "Content-type: text/html\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0xd, 0xa, 0xd, 0xa, }; +const char http_content_type_css [27] = +/* "Content-type: text/css\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x63, 0x73, 0x73, 0xd, 0xa, 0xd, 0xa, }; +const char http_content_type_text[28] = +/* "Content-type: text/text\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x74, 0x65, 0x78, 0x74, 0xd, 0xa, 0xd, 0xa, }; +const char http_content_type_png [28] = +/* "Content-type: image/png\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x70, 0x6e, 0x67, 0xd, 0xa, 0xd, 0xa, }; +const char http_content_type_gif [28] = +/* "Content-type: image/gif\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x67, 0x69, 0x66, 0xd, 0xa, 0xd, 0xa, }; +const char http_content_type_jpg [29] = +/* "Content-type: image/jpeg\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x6a, 0x70, 0x65, 0x67, 0xd, 0xa, 0xd, 0xa, }; +const char http_content_type_binary[43] = +/* "Content-type: application/octet-stream\r\n\r\n" */ +{0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x61, 0x70, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x6f, 0x63, 0x74, 0x65, 0x74, 0x2d, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6d, 0xd, 0xa, 0xd, 0xa, }; +const char http_html[6] = +/* ".html" */ +{0x2e, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_shtml[7] = +/* ".shtml" */ +{0x2e, 0x73, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_htm[5] = +/* ".htm" */ +{0x2e, 0x68, 0x74, 0x6d, }; +const char http_css[5] = +/* ".css" */ +{0x2e, 0x63, 0x73, 0x73, }; +const char http_png[5] = +/* ".png" */ +{0x2e, 0x70, 0x6e, 0x67, }; +const char http_gif[5] = +/* ".gif" */ +{0x2e, 0x67, 0x69, 0x66, }; +const char http_jpg[5] = +/* ".jpg" */ +{0x2e, 0x6a, 0x70, 0x67, }; +const char http_text[5] = +/* ".txt" */ +{0x2e, 0x74, 0x78, 0x74, }; +const char http_txt[5] = +/* ".txt" */ +{0x2e, 0x74, 0x78, 0x74, }; diff --git a/uip/apps/webserver/http-strings.h b/uip/apps/webserver/http-strings.h new file mode 100644 index 0000000..f121dd7 --- /dev/null +++ b/uip/apps/webserver/http-strings.h @@ -0,0 +1,34 @@ +extern const char http_http[8]; +extern const char http_200[5]; +extern const char http_301[5]; +extern const char http_302[5]; +extern const char http_get[5]; +extern const char http_10[9]; +extern const char http_11[9]; +extern const char http_content_type[15]; +extern const char http_texthtml[10]; +extern const char http_location[11]; +extern const char http_host[7]; +extern const char http_crnl[3]; +extern const char http_index_html[12]; +extern const char http_404_html[10]; +extern const char http_referer[9]; +extern const char http_header_200[84]; +extern const char http_header_404[91]; +extern const char http_content_type_plain[29]; +extern const char http_content_type_html[28]; +extern const char http_content_type_css [27]; +extern const char http_content_type_text[28]; +extern const char http_content_type_png [28]; +extern const char http_content_type_gif [28]; +extern const char http_content_type_jpg [29]; +extern const char http_content_type_binary[43]; +extern const char http_html[6]; +extern const char http_shtml[7]; +extern const char http_htm[5]; +extern const char http_css[5]; +extern const char http_png[5]; +extern const char http_gif[5]; +extern const char http_jpg[5]; +extern const char http_text[5]; +extern const char http_txt[5]; diff --git a/uip/apps/webserver/httpd-cgi.c b/uip/apps/webserver/httpd-cgi.c new file mode 100644 index 0000000..6257035 --- /dev/null +++ b/uip/apps/webserver/httpd-cgi.c @@ -0,0 +1,203 @@ +/** + * \addtogroup httpd + * @{ + */ + +/** + * \file + * Web server script interface + * \author + * Adam Dunkels <adam@sics.se> + * + */ + +/* + * Copyright (c) 2001-2006, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: httpd-cgi.c,v 1.2 2006/06/11 21:46:37 adam Exp $ + * + */ + +#include "uip.h" +#include "psock.h" +#include "httpd.h" +#include "httpd-cgi.h" +#include "httpd-fs.h" + +#include <stdio.h> +#include <string.h> + +HTTPD_CGI_CALL(file, "file-stats", file_stats); +HTTPD_CGI_CALL(tcp, "tcp-connections", tcp_stats); +HTTPD_CGI_CALL(net, "net-stats", net_stats); + +static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, NULL }; + +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(nullfunction(struct httpd_state *s, char *ptr)) +{ + PSOCK_BEGIN(&s->sout); + PSOCK_END(&s->sout); +} +/*---------------------------------------------------------------------------*/ +httpd_cgifunction +httpd_cgi(char *name) +{ + const struct httpd_cgi_call **f; + + /* Find the matching name in the table, return the function. */ + for(f = calls; *f != NULL; ++f) { + if(strncmp((*f)->name, name, strlen((*f)->name)) == 0) { + return (*f)->function; + } + } + return nullfunction; +} +/*---------------------------------------------------------------------------*/ +static unsigned short +generate_file_stats(void *arg) +{ + char *f = (char *)arg; + return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, "%5u", httpd_fs_count(f)); +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(file_stats(struct httpd_state *s, char *ptr)) +{ + PSOCK_BEGIN(&s->sout); + + PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, strchr(ptr, ' ') + 1); + + PSOCK_END(&s->sout); +} +/*---------------------------------------------------------------------------*/ +static const char closed[] = /* "CLOSED",*/ +{0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0}; +static const char syn_rcvd[] = /* "SYN-RCVD",*/ +{0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56, + 0x44, 0}; +static const char syn_sent[] = /* "SYN-SENT",*/ +{0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e, + 0x54, 0}; +static const char established[] = /* "ESTABLISHED",*/ +{0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48, + 0x45, 0x44, 0}; +static const char fin_wait_1[] = /* "FIN-WAIT-1",*/ +{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49, + 0x54, 0x2d, 0x31, 0}; +static const char fin_wait_2[] = /* "FIN-WAIT-2",*/ +{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49, + 0x54, 0x2d, 0x32, 0}; +static const char closing[] = /* "CLOSING",*/ +{0x43, 0x4c, 0x4f, 0x53, 0x49, + 0x4e, 0x47, 0}; +static const char time_wait[] = /* "TIME-WAIT,"*/ +{0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41, + 0x49, 0x54, 0}; +static const char last_ack[] = /* "LAST-ACK"*/ +{0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43, + 0x4b, 0}; + +static const char *states[] = { + closed, + syn_rcvd, + syn_sent, + established, + fin_wait_1, + fin_wait_2, + closing, + time_wait, + last_ack}; + + +static unsigned short +generate_tcp_stats(void *arg) +{ + struct uip_conn *conn; + struct httpd_state *s = (struct httpd_state *)arg; + + conn = &uip_conns[s->count]; + return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, + "<tr><td>%d</td><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n", + htons(conn->lport), + htons(conn->ripaddr[0]) >> 8, + htons(conn->ripaddr[0]) & 0xff, + htons(conn->ripaddr[1]) >> 8, + htons(conn->ripaddr[1]) & 0xff, + htons(conn->rport), + states[conn->tcpstateflags & UIP_TS_MASK], + conn->nrtx, + conn->timer, + (uip_outstanding(conn))? '*':' ', + (uip_stopped(conn))? '!':' '); +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr)) +{ + + PSOCK_BEGIN(&s->sout); + + for(s->count = 0; s->count < UIP_CONNS; ++s->count) { + if((uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) { + PSOCK_GENERATOR_SEND(&s->sout, generate_tcp_stats, s); + } + } + + PSOCK_END(&s->sout); +} +/*---------------------------------------------------------------------------*/ +static unsigned short +generate_net_stats(void *arg) +{ + struct httpd_state *s = (struct httpd_state *)arg; + return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, + "%5u\n", ((uip_stats_t *)&uip_stat)[s->count]); +} + +static +PT_THREAD(net_stats(struct httpd_state *s, char *ptr)) +{ + PSOCK_BEGIN(&s->sout); + +#if UIP_STATISTICS + + for(s->count = 0; s->count < sizeof(uip_stat) / sizeof(uip_stats_t); + ++s->count) { + PSOCK_GENERATOR_SEND(&s->sout, generate_net_stats, s); + } + +#endif /* UIP_STATISTICS */ + + PSOCK_END(&s->sout); +} +/*---------------------------------------------------------------------------*/ +/** @} */ diff --git a/uip/apps/webserver/httpd-cgi.h b/uip/apps/webserver/httpd-cgi.h new file mode 100644 index 0000000..e6ba51e --- /dev/null +++ b/uip/apps/webserver/httpd-cgi.h @@ -0,0 +1,84 @@ +/** + * \addtogroup httpd + * @{ + */ + +/** + * \file + * Web server script interface header file + * \author + * Adam Dunkels <adam@sics.se> + * + */ + + + +/* + * Copyright (c) 2001, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: httpd-cgi.h,v 1.2 2006/06/11 21:46:38 adam Exp $ + * + */ + +#ifndef __HTTPD_CGI_H__ +#define __HTTPD_CGI_H__ + +#include "psock.h" +#include "httpd.h" + +typedef PT_THREAD((* httpd_cgifunction)(struct httpd_state *, char *)); + +httpd_cgifunction httpd_cgi(char *name); + +struct httpd_cgi_call { + const char *name; + const httpd_cgifunction function; +}; + +/** + * \brief HTTPD CGI function declaration + * \param name The C variable name of the function + * \param str The string name of the function, used in the script file + * \param function A pointer to the function that implements it + * + * This macro is used for declaring a HTTPD CGI + * function. This function is then added to the list of + * HTTPD CGI functions with the httpd_cgi_add() function. + * + * \hideinitializer + */ +#define HTTPD_CGI_CALL(name, str, function) \ +static PT_THREAD(function(struct httpd_state *, char *)); \ +static const struct httpd_cgi_call name = {str, function} + +void httpd_cgi_init(void); +#endif /* __HTTPD_CGI_H__ */ + +/** @} */ diff --git a/uip/apps/webserver/httpd-fs.c b/uip/apps/webserver/httpd-fs.c new file mode 100644 index 0000000..21185e8 --- /dev/null +++ b/uip/apps/webserver/httpd-fs.c @@ -0,0 +1,132 @@ +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: httpd-fs.c,v 1.1 2006/06/07 09:13:08 adam Exp $ + */ + +#include "httpd.h" +#include "httpd-fs.h" +#include "httpd-fsdata.h" + +#ifndef NULL +#define NULL 0 +#endif /* NULL */ + +#include "httpd-fsdata.c" + +#if HTTPD_FS_STATISTICS +static u16_t count[HTTPD_FS_NUMFILES]; +#endif /* HTTPD_FS_STATISTICS */ + +/*-----------------------------------------------------------------------------------*/ +static u8_t +httpd_fs_strcmp(const char *str1, const char *str2) +{ + u8_t i; + i = 0; + loop: + + if(str2[i] == 0 || + str1[i] == '\r' || + str1[i] == '\n') { + return 0; + } + + if(str1[i] != str2[i]) { + return 1; + } + + + ++i; + goto loop; +} +/*-----------------------------------------------------------------------------------*/ +int +httpd_fs_open(const char *name, struct httpd_fs_file *file) +{ +#if HTTPD_FS_STATISTICS + u16_t i = 0; +#endif /* HTTPD_FS_STATISTICS */ + struct httpd_fsdata_file_noconst *f; + + for(f = (struct httpd_fsdata_file_noconst *)HTTPD_FS_ROOT; + f != NULL; + f = (struct httpd_fsdata_file_noconst *)f->next) { + + if(httpd_fs_strcmp(name, f->name) == 0) { + file->data = f->data; + file->len = f->len; +#if HTTPD_FS_STATISTICS + ++count[i]; +#endif /* HTTPD_FS_STATISTICS */ + return 1; + } +#if HTTPD_FS_STATISTICS + ++i; +#endif /* HTTPD_FS_STATISTICS */ + + } + return 0; +} +/*-----------------------------------------------------------------------------------*/ +void +httpd_fs_init(void) +{ +#if HTTPD_FS_STATISTICS + u16_t i; + for(i = 0; i < HTTPD_FS_NUMFILES; i++) { + count[i] = 0; + } +#endif /* HTTPD_FS_STATISTICS */ +} +/*-----------------------------------------------------------------------------------*/ +#if HTTPD_FS_STATISTICS +u16_t httpd_fs_count +(char *name) +{ + struct httpd_fsdata_file_noconst *f; + u16_t i; + + i = 0; + for(f = (struct httpd_fsdata_file_noconst *)HTTPD_FS_ROOT; + f != NULL; + f = (struct httpd_fsdata_file_noconst *)f->next) { + + if(httpd_fs_strcmp(name, f->name) == 0) { + return count[i]; + } + ++i; + } + return 0; +} +#endif /* HTTPD_FS_STATISTICS */ +/*-----------------------------------------------------------------------------------*/ diff --git a/uip/apps/webserver/httpd-fs.h b/uip/apps/webserver/httpd-fs.h new file mode 100644 index 0000000..d80ed3d --- /dev/null +++ b/uip/apps/webserver/httpd-fs.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: httpd-fs.h,v 1.1 2006/06/07 09:13:08 adam Exp $ + */ +#ifndef __HTTPD_FS_H__ +#define __HTTPD_FS_H__ + +#define HTTPD_FS_STATISTICS 1 + +struct httpd_fs_file { + char *data; + int len; +}; + +/* file must be allocated by caller and will be filled in + by the function. */ +int httpd_fs_open(const char *name, struct httpd_fs_file *file); + +#ifdef HTTPD_FS_STATISTICS +#if HTTPD_FS_STATISTICS == 1 +u16_t httpd_fs_count(char *name); +#endif /* HTTPD_FS_STATISTICS */ +#endif /* HTTPD_FS_STATISTICS */ + +void httpd_fs_init(void); + +#endif /* __HTTPD_FS_H__ */ diff --git a/uip/apps/webserver/httpd-fs/404.html b/uip/apps/webserver/httpd-fs/404.html new file mode 100644 index 0000000..a17711d --- /dev/null +++ b/uip/apps/webserver/httpd-fs/404.html @@ -0,0 +1,8 @@ +<html> + <body bgcolor="white"> + <center> + <h1>404 - file not found</h1> + <h3>Go <a href="/">here</a> instead.</h3> + </center> + </body> +</html>
\ No newline at end of file diff --git a/uip/apps/webserver/httpd-fs/fade.png b/uip/apps/webserver/httpd-fs/fade.png Binary files differnew file mode 100644 index 0000000..a9e69f7 --- /dev/null +++ b/uip/apps/webserver/httpd-fs/fade.png diff --git a/uip/apps/webserver/httpd-fs/files.shtml b/uip/apps/webserver/httpd-fs/files.shtml new file mode 100644 index 0000000..811e230 --- /dev/null +++ b/uip/apps/webserver/httpd-fs/files.shtml @@ -0,0 +1,35 @@ +%!: /header.html +<h1>File statistics</h1> +<center> +<table width="300"> +<tr><td><a href="/index.html">/index.html</a></td> +<td>%! file-stats /index.html +</td><td><img src="/fade.png" height=10 width=%! file-stats /index.html +> </td></tr> +<tr><td><a href="/files.shtml">/files.shtml</a></td> +<td>%! file-stats /files.shtml +</td><td><img src="/fade.png" height=10 width=%! file-stats /files.shtml +> </td></tr> +<tr><td><a href="/tcp.shtml">/tcp.shtml</a></td> +<td>%! file-stats /tcp.shtml +</td><td><img src="/fade.png" height=10 width=%! file-stats /tcp.shtml +> </td></tr> +<tr><td><a href="/stats.shtml">/stats.shtml</a></td> +<td>%! file-stats /stats.shtml +</td><td><img src="/fade.png" height=10 width=%! file-stats /stats.shtml +> </td></tr> +<tr><td><a href="/style.css">/style.css</a></td> +<td>%! file-stats /style.css +</td><td><img src="/fade.png" height=10 width=%! file-stats /style.css +> </td></tr> +<tr><td><a href="/404.html">/404.html</a></td> +<td>%! file-stats /404.html +</td><td><img src="/fade.png" height=10 width=%! file-stats /404.html +> </td></tr> +<tr><td><a href="/fade.png">/fade.png</a></td> +<td>%! file-stats /fade.png +</td><td><img src="/fade.png" height=10 width=%! file-stats /fade.png +> </td></tr> +</table> +</center> +%!: /footer.html diff --git a/uip/apps/webserver/httpd-fs/footer.html b/uip/apps/webserver/httpd-fs/footer.html new file mode 100644 index 0000000..1fd5f4f --- /dev/null +++ b/uip/apps/webserver/httpd-fs/footer.html @@ -0,0 +1,2 @@ + </body> +</html>
\ No newline at end of file diff --git a/uip/apps/webserver/httpd-fs/header.html b/uip/apps/webserver/httpd-fs/header.html new file mode 100644 index 0000000..7b1a1fe --- /dev/null +++ b/uip/apps/webserver/httpd-fs/header.html @@ -0,0 +1,18 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> + <head> + <title>Welcome to the uIP web server!</title> + <link rel="stylesheet" type="text/css" href="style.css"> + </head> + <body bgcolor="#fffeec" text="black"> + + <div class="menu"> + <div class="menubox"><a href="/">Front page</a></div> + <div class="menubox"><a href="files.shtml">File statistics</a></div> + <div class="menubox"><a href="stats.shtml">Network statistics</a></div> + <div class="menubox"><a href="tcp.shtml">Network + connections</a></div> + <br> + </div> + + <div class="contentblock"> diff --git a/uip/apps/webserver/httpd-fs/index.html b/uip/apps/webserver/httpd-fs/index.html new file mode 100644 index 0000000..27cbc93 --- /dev/null +++ b/uip/apps/webserver/httpd-fs/index.html @@ -0,0 +1,29 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> + <head> + <title>Welcome to the uIP web server!</title> + <link rel="stylesheet" type="text/css" href="style.css"> + </head> + <body bgcolor="#fffeec" text="black"> + + <div class="menu"> + <div class="menubox"><a href="/">Front page</a></div> + <div class="menubox"><a href="files.shtml">File statistics</a></div> + <div class="menubox"><a href="stats.shtml">Network statistics</a></div> + <div class="menubox"><a href="tcp.shtml">Network + connections</a></div> + <br> + </div> + + <div class="contentblock"> + <p> + These web pages are served by a small web server running on top of + the <a href="http://www.sics.se/~adam/uip/">uIP embedded TCP/IP + stack</a>. + </p> + <p> + Click on the links above for web server statistics. + </p> + + </body> +</html> diff --git a/uip/apps/webserver/httpd-fs/processes.shtml b/uip/apps/webserver/httpd-fs/processes.shtml new file mode 100644 index 0000000..2f93e35 --- /dev/null +++ b/uip/apps/webserver/httpd-fs/processes.shtml @@ -0,0 +1,5 @@ +%!: /header.html +<h1>System processes</h1><br><table width="100%"> +<tr><th>ID</th><th>Name</th><th>Priority</th><th>Poll handler</th><th>Event handler</th><th>Procstate</th></tr> +%! processes +%!: /footer.html
\ No newline at end of file diff --git a/uip/apps/webserver/httpd-fs/stats.shtml b/uip/apps/webserver/httpd-fs/stats.shtml new file mode 100644 index 0000000..c63ed4a --- /dev/null +++ b/uip/apps/webserver/httpd-fs/stats.shtml @@ -0,0 +1,31 @@ +%!: /header.html +<h1>Network statistics</h1> +<center> +<table width="300" border="0"> +<tr><td><pre> +IP Packets received + Packets sent + Packets dropped +IP errors IP version/header length + IP length, high byte + IP length, low byte + IP fragments + Header checksum + Wrong protocol +ICMP Packets received + Packets sent + Packets dropped + Type errors +TCP Packets received + Packets sent + Packets dropped + Checksum errors + Data packets without ACKs + Resets + Retransmissions + No connection avaliable + Connection attempts to closed ports +</pre></td><td><pre>%! net-stats +</pre></table> +</center> +%!: /footer.html diff --git a/uip/apps/webserver/httpd-fs/style.css b/uip/apps/webserver/httpd-fs/style.css new file mode 100644 index 0000000..ba6df7f --- /dev/null +++ b/uip/apps/webserver/httpd-fs/style.css @@ -0,0 +1,92 @@ +h1 +{ + text-align: center; + font-size:14pt; + font-family:arial,helvetica; + font-weight:bold; + padding:10px; +} + +body +{ + + background-color: #fffeec; + color:black; + + font-size:8pt; + font-family:arial,helvetica; +} + +.menu +{ + margin: 4px; + width:60%; + + padding:2px; + + border: solid 1px; + background-color: #fffcd2; + text-align:left; + + font-size:9pt; + font-family:arial,helvetica; +} + +div.menubox +{ + width: 25%; + border: 0; + float: left; +text-align: center; +} + +.contentblock +{ + margin: 4px; + width:60%; + + padding:2px; + + border: 1px dotted; + background-color: white; + + font-size:8pt; + font-family:arial,helvetica; + +} + +p.intro +{ + margin-left:20px; + margin-right:20px; + + font-size:10pt; +/* font-weight:bold; */ + font-family:arial,helvetica; +} + +p.clink +{ + font-size:12pt; + font-family:courier,monospace; + text-align:center; +} + +p.clink9 +{ + font-size:9pt; + font-family:courier,monospace; + text-align:center; +} + + +p +{ + padding-left:10px; +} + +p.right +{ + text-align:right; +} + diff --git a/uip/apps/webserver/httpd-fs/tcp.shtml b/uip/apps/webserver/httpd-fs/tcp.shtml new file mode 100644 index 0000000..4c4bffe --- /dev/null +++ b/uip/apps/webserver/httpd-fs/tcp.shtml @@ -0,0 +1,5 @@ +%!: /header.html +<h1>Current connections</h1><br><table width="100%"> +<tr><th>Local</th><th>Remote</th><th>State</th><th>Retransmissions</th><th>Timer</th><th>Flags</th></tr> +%! tcp-connections +%!: /footer.html
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0x69, 0x6f, 0x6e, 0x20, 0x61, 0x76, 0x61, 0x6c, 0x69, 0x61, + 0x62, 0x6c, 0x65, 0xa, 0x9, 0x20, 0x20, 0x20, 0x20, 0x20, + 0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, + 0x20, 0x61, 0x74, 0x74, 0x65, 0x6d, 0x70, 0x74, 0x73, 0x20, + 0x74, 0x6f, 0x20, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0x64, 0x20, + 0x70, 0x6f, 0x72, 0x74, 0x73, 0xa, 0x3c, 0x2f, 0x70, 0x72, + 0x65, 0x3e, 0x3c, 0x2f, 0x74, 0x64, 0x3e, 0x3c, 0x74, 0x64, + 0x3e, 0x3c, 0x70, 0x72, 0x65, 0x3e, 0x25, 0x21, 0x20, 0x6e, + 0x65, 0x74, 0x2d, 0x73, 0x74, 0x61, 0x74, 0x73, 0xa, 0x3c, + 0x2f, 0x70, 0x72, 0x65, 0x3e, 0x3c, 0x2f, 0x74, 0x61, 0x62, + 0x6c, 0x65, 0x3e, 0xa, 0x3c, 0x2f, 0x63, 0x65, 0x6e, 0x74, + 0x65, 0x72, 0x3e, 0xa, 0x25, 0x21, 0x3a, 0x20, 0x2f, 0x66, + 0x6f, 0x6f, 0x74, 0x65, 0x72, 0x2e, 0x68, 0x74, 0x6d, 0x6c, + 0xa, 0}; + +const struct httpd_fsdata_file file_processes_shtml[] = {{NULL, data_processes_shtml, data_processes_shtml + 17, sizeof(data_processes_shtml) - 17}}; + +const struct httpd_fsdata_file file_404_html[] = {{file_processes_shtml, data_404_html, data_404_html + 10, sizeof(data_404_html) - 10}}; + +const struct httpd_fsdata_file file_files_shtml[] = {{file_404_html, data_files_shtml, data_files_shtml + 13, sizeof(data_files_shtml) - 13}}; + +const struct httpd_fsdata_file file_footer_html[] = {{file_files_shtml, data_footer_html, data_footer_html + 13, sizeof(data_footer_html) - 13}}; + +const struct httpd_fsdata_file file_header_html[] = {{file_footer_html, data_header_html, data_header_html + 13, sizeof(data_header_html) - 13}}; + +const struct httpd_fsdata_file file_index_html[] = {{file_header_html, data_index_html, data_index_html + 12, sizeof(data_index_html) - 12}}; + +const struct httpd_fsdata_file file_style_css[] = {{file_index_html, data_style_css, data_style_css + 11, sizeof(data_style_css) - 11}}; + +const struct httpd_fsdata_file file_tcp_shtml[] = {{file_style_css, data_tcp_shtml, data_tcp_shtml + 11, sizeof(data_tcp_shtml) - 11}}; + +const struct httpd_fsdata_file file_fade_png[] = {{file_tcp_shtml, data_fade_png, data_fade_png + 10, sizeof(data_fade_png) - 10}}; + +const struct httpd_fsdata_file file_stats_shtml[] = {{file_fade_png, data_stats_shtml, data_stats_shtml + 13, sizeof(data_stats_shtml) - 13}}; + +#define HTTPD_FS_ROOT file_stats_shtml + +#define HTTPD_FS_NUMFILES 10 diff --git a/uip/apps/webserver/httpd-fsdata.h b/uip/apps/webserver/httpd-fsdata.h new file mode 100644 index 0000000..0ad2d6e --- /dev/null +++ b/uip/apps/webserver/httpd-fsdata.h @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: httpd-fsdata.h,v 1.1 2006/06/07 09:13:08 adam Exp $ + */ +#ifndef __HTTPD_FSDATA_H__ +#define __HTTPD_FSDATA_H__ + +#include "uip.h" + +struct httpd_fsdata_file { + const struct httpd_fsdata_file *next; + const char *name; + const char *data; + const int len; +#ifdef HTTPD_FS_STATISTICS +#if HTTPD_FS_STATISTICS == 1 + u16_t count; +#endif /* HTTPD_FS_STATISTICS */ +#endif /* HTTPD_FS_STATISTICS */ +}; + +struct httpd_fsdata_file_noconst { + struct httpd_fsdata_file *next; + char *name; + char *data; + int len; +#ifdef HTTPD_FS_STATISTICS +#if HTTPD_FS_STATISTICS == 1 + u16_t count; +#endif /* HTTPD_FS_STATISTICS */ +#endif /* HTTPD_FS_STATISTICS */ +}; + +#endif /* __HTTPD_FSDATA_H__ */ diff --git a/uip/apps/webserver/httpd.c b/uip/apps/webserver/httpd.c new file mode 100644 index 0000000..937e138 --- /dev/null +++ b/uip/apps/webserver/httpd.c @@ -0,0 +1,338 @@ +/** + * \addtogroup apps + * @{ + */ + +/** + * \defgroup httpd Web server + * @{ + * The uIP web server is a very simplistic implementation of an HTTP + * server. It can serve web pages and files from a read-only ROM + * filesystem, and provides a very small scripting language. + + */ + +/** + * \file + * Web server + * \author + * Adam Dunkels <adam@sics.se> + */ + + +/* + * Copyright (c) 2004, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: httpd.c,v 1.2 2006/06/11 21:46:38 adam Exp $ + */ + +#include "uip.h" +#include "httpd.h" +#include "httpd-fs.h" +#include "httpd-cgi.h" +#include "http-strings.h" + +#include <string.h> + +#define STATE_WAITING 0 +#define STATE_OUTPUT 1 + +#define ISO_nl 0x0a +#define ISO_space 0x20 +#define ISO_bang 0x21 +#define ISO_percent 0x25 +#define ISO_period 0x2e +#define ISO_slash 0x2f +#define ISO_colon 0x3a + + +/*---------------------------------------------------------------------------*/ +static unsigned short +generate_part_of_file(void *state) +{ + struct httpd_state *s = (struct httpd_state *)state; + + if(s->file.len > uip_mss()) { + s->len = uip_mss(); + } else { + s->len = s->file.len; + } + memcpy(uip_appdata, s->file.data, s->len); + + return s->len; +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(send_file(struct httpd_state *s)) +{ + PSOCK_BEGIN(&s->sout); + + do { + PSOCK_GENERATOR_SEND(&s->sout, generate_part_of_file, s); + s->file.len -= s->len; + s->file.data += s->len; + } while(s->file.len > 0); + + PSOCK_END(&s->sout); +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(send_part_of_file(struct httpd_state *s)) +{ + PSOCK_BEGIN(&s->sout); + + PSOCK_SEND(&s->sout, s->file.data, s->len); + + PSOCK_END(&s->sout); +} +/*---------------------------------------------------------------------------*/ +static void +next_scriptstate(struct httpd_state *s) +{ + char *p; + p = strchr(s->scriptptr, ISO_nl) + 1; + s->scriptlen -= (unsigned short)(p - s->scriptptr); + s->scriptptr = p; +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(handle_script(struct httpd_state *s)) +{ + char *ptr; + + PT_BEGIN(&s->scriptpt); + + + while(s->file.len > 0) { + + /* Check if we should start executing a script. */ + if(*s->file.data == ISO_percent && + *(s->file.data + 1) == ISO_bang) { + s->scriptptr = s->file.data + 3; + s->scriptlen = s->file.len - 3; + if(*(s->scriptptr - 1) == ISO_colon) { + httpd_fs_open(s->scriptptr + 1, &s->file); + PT_WAIT_THREAD(&s->scriptpt, send_file(s)); + } else { + PT_WAIT_THREAD(&s->scriptpt, + httpd_cgi(s->scriptptr)(s, s->scriptptr)); + } + next_scriptstate(s); + + /* The script is over, so we reset the pointers and continue + sending the rest of the file. */ + s->file.data = s->scriptptr; + s->file.len = s->scriptlen; + } else { + /* See if we find the start of script marker in the block of HTML + to be sent. */ + + if(s->file.len > uip_mss()) { + s->len = uip_mss(); + } else { + s->len = s->file.len; + } + + if(*s->file.data == ISO_percent) { + ptr = strchr(s->file.data + 1, ISO_percent); + } else { + ptr = strchr(s->file.data, ISO_percent); + } + if(ptr != NULL && + ptr != s->file.data) { + s->len = (int)(ptr - s->file.data); + if(s->len >= uip_mss()) { + s->len = uip_mss(); + } + } + PT_WAIT_THREAD(&s->scriptpt, send_part_of_file(s)); + s->file.data += s->len; + s->file.len -= s->len; + + } + } + + PT_END(&s->scriptpt); +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(send_headers(struct httpd_state *s, const char *statushdr)) +{ + char *ptr; + + PSOCK_BEGIN(&s->sout); + + PSOCK_SEND_STR(&s->sout, statushdr); + + ptr = strrchr(s->filename, ISO_period); + if(ptr == NULL) { + PSOCK_SEND_STR(&s->sout, http_content_type_binary); + } else if(strncmp(http_html, ptr, 5) == 0 || + strncmp(http_shtml, ptr, 6) == 0) { + PSOCK_SEND_STR(&s->sout, http_content_type_html); + } else if(strncmp(http_css, ptr, 4) == 0) { + PSOCK_SEND_STR(&s->sout, http_content_type_css); + } else if(strncmp(http_png, ptr, 4) == 0) { + PSOCK_SEND_STR(&s->sout, http_content_type_png); + } else if(strncmp(http_gif, ptr, 4) == 0) { + PSOCK_SEND_STR(&s->sout, http_content_type_gif); + } else if(strncmp(http_jpg, ptr, 4) == 0) { + PSOCK_SEND_STR(&s->sout, http_content_type_jpg); + } else { + PSOCK_SEND_STR(&s->sout, http_content_type_plain); + } + PSOCK_END(&s->sout); +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(handle_output(struct httpd_state *s)) +{ + char *ptr; + + PT_BEGIN(&s->outputpt); + + if(!httpd_fs_open(s->filename, &s->file)) { + httpd_fs_open(http_404_html, &s->file); + strcpy(s->filename, http_404_html); + PT_WAIT_THREAD(&s->outputpt, + send_headers(s, + http_header_404)); + PT_WAIT_THREAD(&s->outputpt, + send_file(s)); + } else { + PT_WAIT_THREAD(&s->outputpt, + send_headers(s, + http_header_200)); + ptr = strchr(s->filename, ISO_period); + if(ptr != NULL && strncmp(ptr, http_shtml, 6) == 0) { + PT_INIT(&s->scriptpt); + PT_WAIT_THREAD(&s->outputpt, handle_script(s)); + } else { + PT_WAIT_THREAD(&s->outputpt, + send_file(s)); + } + } + PSOCK_CLOSE(&s->sout); + PT_END(&s->outputpt); +} +/*---------------------------------------------------------------------------*/ +static +PT_THREAD(handle_input(struct httpd_state *s)) +{ + PSOCK_BEGIN(&s->sin); + + PSOCK_READTO(&s->sin, ISO_space); + + + if(strncmp(s->inputbuf, http_get, 4) != 0) { + PSOCK_CLOSE_EXIT(&s->sin); + } + PSOCK_READTO(&s->sin, ISO_space); + + if(s->inputbuf[0] != ISO_slash) { + PSOCK_CLOSE_EXIT(&s->sin); + } + + if(s->inputbuf[1] == ISO_space) { + strncpy(s->filename, http_index_html, sizeof(s->filename)); + } else { + s->inputbuf[PSOCK_DATALEN(&s->sin) - 1] = 0; + strncpy(s->filename, &s->inputbuf[0], sizeof(s->filename)); + } + + /* httpd_log_file(uip_conn->ripaddr, s->filename);*/ + + s->state = STATE_OUTPUT; + + while(1) { + PSOCK_READTO(&s->sin, ISO_nl); + + if(strncmp(s->inputbuf, http_referer, 8) == 0) { + s->inputbuf[PSOCK_DATALEN(&s->sin) - 2] = 0; + /* httpd_log(&s->inputbuf[9]);*/ + } + } + + PSOCK_END(&s->sin); +} +/*---------------------------------------------------------------------------*/ +static void +handle_connection(struct httpd_state *s) +{ + handle_input(s); + if(s->state == STATE_OUTPUT) { + handle_output(s); + } +} +/*---------------------------------------------------------------------------*/ +void +httpd_appcall(void) +{ + struct httpd_state *s = (struct httpd_state *)&(uip_conn->appstate); + + if(uip_closed() || uip_aborted() || uip_timedout()) { + } else if(uip_connected()) { + PSOCK_INIT(&s->sin, s->inputbuf, sizeof(s->inputbuf) - 1); + PSOCK_INIT(&s->sout, s->inputbuf, sizeof(s->inputbuf) - 1); + PT_INIT(&s->outputpt); + s->state = STATE_WAITING; + /* timer_set(&s->timer, CLOCK_SECOND * 100);*/ + s->timer = 0; + handle_connection(s); + } else if(s != NULL) { + if(uip_poll()) { + ++s->timer; + if(s->timer >= 20) { + uip_abort(); + } + } else { + s->timer = 0; + } + handle_connection(s); + } else { + uip_abort(); + } +} +/*---------------------------------------------------------------------------*/ +/** + * \brief Initialize the web server + * + * This function initializes the web server and should be + * called at system boot-up. + */ +void +httpd_init(void) +{ + uip_listen(HTONS(80)); +} +/*---------------------------------------------------------------------------*/ +/** @} */ diff --git a/uip/apps/webserver/httpd.h b/uip/apps/webserver/httpd.h new file mode 100644 index 0000000..270d49d --- /dev/null +++ b/uip/apps/webserver/httpd.h @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2001-2005, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: httpd.h,v 1.2 2006/06/11 21:46:38 adam Exp $ + * + */ + +#ifndef __HTTPD_H__ +#define __HTTPD_H__ + +#include "psock.h" +#include "httpd-fs.h" + +struct httpd_state { + unsigned char timer; + struct psock sin, sout; + struct pt outputpt, scriptpt; + char inputbuf[50]; + char filename[20]; + char state; + struct httpd_fs_file file; + int len; + char *scriptptr; + int scriptlen; + + unsigned short count; +}; + +void httpd_init(void); +void httpd_appcall(void); + +void httpd_log(char *msg); +void httpd_log_file(u16_t *requester, char *file); + +#endif /* __HTTPD_H__ */ diff --git a/uip/apps/webserver/makefsdata b/uip/apps/webserver/makefsdata new file mode 100755 index 0000000..b2109ab --- /dev/null +++ b/uip/apps/webserver/makefsdata @@ -0,0 +1,78 @@ +#!/usr/bin/perl + +open(OUTPUT, "> httpd-fsdata.c"); + +chdir("httpd-fs"); + +opendir(DIR, "."); +@files = grep { !/^\./ && !/(CVS|~)/ } readdir(DIR); +closedir(DIR); + +foreach $file (@files) { + + if(-d $file && $file !~ /^\./) { + print "Processing directory $file\n"; + opendir(DIR, $file); + @newfiles = grep { !/^\./ && !/(CVS|~)/ } readdir(DIR); + closedir(DIR); + printf "Adding files @newfiles\n"; + @files = (@files, map { $_ = "$file/$_" } @newfiles); + next; + } +} + +foreach $file (@files) { + if(-f $file) { + + print "Adding file $file\n"; + + open(FILE, $file) || die "Could not open file $file\n"; + + $file =~ s-^-/-; + $fvar = $file; + $fvar =~ s-/-_-g; + $fvar =~ s-\.-_-g; + # for AVR, add PROGMEM here + print(OUTPUT "static const unsigned char data".$fvar."[] = {\n"); + print(OUTPUT "\t/* $file */\n\t"); + for($j = 0; $j < length($file); $j++) { + printf(OUTPUT "%#02x, ", unpack("C", substr($file, $j, 1))); + } + printf(OUTPUT "0,\n"); + + + $i = 0; + while(read(FILE, $data, 1)) { + if($i == 0) { + print(OUTPUT "\t"); + } + printf(OUTPUT "%#02x, ", unpack("C", $data)); + $i++; + if($i == 10) { + print(OUTPUT "\n"); + $i = 0; + } + } + print(OUTPUT "0};\n\n"); + close(FILE); + push(@fvars, $fvar); + push(@pfiles, $file); + } +} + +for($i = 0; $i < @fvars; $i++) { + $file = $pfiles[$i]; + $fvar = $fvars[$i]; + + if($i == 0) { + $prevfile = "NULL"; + } else { + $prevfile = "file" . $fvars[$i - 1]; + } + print(OUTPUT "const struct httpd_fsdata_file file".$fvar."[] = {{$prevfile, data$fvar, "); + print(OUTPUT "data$fvar + ". (length($file) + 1) .", "); + print(OUTPUT "sizeof(data$fvar) - ". (length($file) + 1) ."}};\n\n"); +} + +print(OUTPUT "#define HTTPD_FS_ROOT file$fvars[$i - 1]\n\n"); +print(OUTPUT "#define HTTPD_FS_NUMFILES $i\n"); diff --git a/uip/apps/webserver/makestrings b/uip/apps/webserver/makestrings new file mode 100755 index 0000000..20f0e24 --- /dev/null +++ b/uip/apps/webserver/makestrings @@ -0,0 +1,40 @@ +#!/usr/bin/perl + + +sub stringify { + my $name = shift(@_); + open(OUTPUTC, "> $name.c"); + open(OUTPUTH, "> $name.h"); + + open(FILE, "$name"); + + while(<FILE>) { + if(/(.+) "(.+)"/) { + $var = $1; + $data = $2; + + $datan = $data; + $datan =~ s/\\r/\r/g; + $datan =~ s/\\n/\n/g; + $datan =~ s/\\01/\01/g; + $datan =~ s/\\0/\0/g; + + printf(OUTPUTC "const char $var\[%d] = \n", length($datan) + 1); + printf(OUTPUTC "/* \"$data\" */\n"); + printf(OUTPUTC "{"); + for($j = 0; $j < length($datan); $j++) { + printf(OUTPUTC "%#02x, ", unpack("C", substr($datan, $j, 1))); + } + printf(OUTPUTC "};\n"); + + printf(OUTPUTH "extern const char $var\[%d];\n", length($datan) + 1); + + } + } + close(OUTPUTC); + close(OUTPUTH); +} +stringify("http-strings"); + +exit 0; + diff --git a/uip/apps/webserver/webserver.h b/uip/apps/webserver/webserver.h new file mode 100644 index 0000000..48753e6 --- /dev/null +++ b/uip/apps/webserver/webserver.h @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2002, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: webserver.h,v 1.2 2006/06/11 21:46:38 adam Exp $ + * + */ +#ifndef __WEBSERVER_H__ +#define __WEBSERVER_H__ + +#include "httpd.h" + +typedef struct httpd_state uip_tcp_appstate_t; +/* UIP_APPCALL: the name of the application function. This function + must return void and take no arguments (i.e., C type "void + appfunc(void)"). */ +#ifndef UIP_APPCALL +#define UIP_APPCALL httpd_appcall +#endif + + +#endif /* __WEBSERVER_H__ */ diff --git a/uip/lib/memb.c b/uip/lib/memb.c new file mode 100644 index 0000000..777b52f --- /dev/null +++ b/uip/lib/memb.c @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: memb.c,v 1.1 2006/06/12 08:21:43 adam Exp $ + */ + +/** + * \addtogroup memb + * @{ + */ + + /** + * \file + * Memory block allocation routines. + * \author Adam Dunkels <adam@sics.se> + */ +#include <string.h> + +#include "memb.h" + +/*---------------------------------------------------------------------------*/ +void +memb_init(struct memb_blocks *m) +{ + memset(m->count, 0, m->num); + memset(m->mem, 0, m->size * m->num); +} +/*---------------------------------------------------------------------------*/ +void * +memb_alloc(struct memb_blocks *m) +{ + int i; + + for(i = 0; i < m->num; ++i) { + if(m->count[i] == 0) { + /* If this block was unused, we increase the reference count to + indicate that it now is used and return a pointer to the + memory block. */ + ++(m->count[i]); + return (void *)((char *)m->mem + (i * m->size)); + } + } + + /* No free block was found, so we return NULL to indicate failure to + allocate block. */ + return NULL; +} +/*---------------------------------------------------------------------------*/ +char +memb_free(struct memb_blocks *m, void *ptr) +{ + int i; + char *ptr2; + + /* Walk through the list of blocks and try to find the block to + which the pointer "ptr" points to. */ + ptr2 = (char *)m->mem; + for(i = 0; i < m->num; ++i) { + + if(ptr2 == (char *)ptr) { + /* We've found to block to which "ptr" points so we decrease the + reference count and return the new value of it. */ + if(m->count[i] > 0) { + /* Make sure that we don't deallocate free memory. */ + --(m->count[i]); + } + return m->count[i]; + } + ptr2 += m->size; + } + return -1; +} +/*---------------------------------------------------------------------------*/ + +/** @} */ diff --git a/uip/lib/memb.h b/uip/lib/memb.h new file mode 100644 index 0000000..b725ebe --- /dev/null +++ b/uip/lib/memb.h @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: memb.h,v 1.1 2006/06/12 08:21:43 adam Exp $ + */ + +/** + * \defgroup memb Memory block management functions + * + * The memory block allocation routines provide a simple yet powerful + * set of functions for managing a set of memory blocks of fixed + * size. A set of memory blocks is statically declared with the + * MEMB() macro. Memory blocks are allocated from the declared + * memory by the memb_alloc() function, and are deallocated with the + * memb_free() function. + * + * \note Because of namespace clashes only one MEMB() can be + * declared per C module, and the name scope of a MEMB() memory + * block is local to each C module. + * + * The following example shows how to declare and use a memory block + * called "cmem" which has 8 chunks of memory with each memory chunk + * being 20 bytes large. + * + * @{ + */ + + +/** + * \file + * Memory block allocation routines. + * \author + * Adam Dunkels <adam@sics.se> + * + */ + +#ifndef __MEMB_H__ +#define __MEMB_H__ + +/* + * Here we define a C preprocessing macro for concatenating to + * strings. We need use two macros in order to allow concatenation of + * two #defined macros. + */ +#define MEMB_CONCAT2(s1, s2) s1##s2 +#define MEMB_CONCAT(s1, s2) MEMB_CONCAT2(s1, s2) + +/** + * Declare a memory block. + * + * This macro is used to staticall declare a block of memory that can + * be used by the block allocation functions. The macro statically + * declares a C array with a size that matches the specified number of + * blocks and their individual sizes. + * + * Example: + \code +MEMB(connections, sizeof(struct connection), 16); + \endcode + * + * \param name The name of the memory block (later used with + * memb_init(), memb_alloc() and memb_free()). + * + * \param size The size of each memory chunk, in bytes. + * + * \param num The total number of memory chunks in the block. + * + */ +#define MEMB(name, structure, num) \ + static char MEMB_CONCAT(name,_memb_count)[num]; \ + static structure MEMB_CONCAT(name,_memb_mem)[num]; \ + static struct memb_blocks name = {sizeof(structure), num, \ + MEMB_CONCAT(name,_memb_count), \ + (void *)MEMB_CONCAT(name,_memb_mem)} + +struct memb_blocks { + unsigned short size; + unsigned short num; + char *count; + void *mem; +}; + +/** + * Initialize a memory block that was declared with MEMB(). + * + * \param m A memory block previosly declared with MEMB(). + */ +void memb_init(struct memb_blocks *m); + +/** + * Allocate a memory block from a block of memory declared with MEMB(). + * + * \param m A memory block previosly declared with MEMB(). + */ +void *memb_alloc(struct memb_blocks *m); + +/** + * Deallocate a memory block from a memory block previously declared + * with MEMB(). + * + * \param m m A memory block previosly declared with MEMB(). + * + * \param ptr A pointer to the memory block that is to be deallocated. + * + * \return The new reference count for the memory block (should be 0 + * if successfully deallocated) or -1 if the pointer "ptr" did not + * point to a legal memory block. + */ +char memb_free(struct memb_blocks *m, void *ptr); + +/** @} */ + +#endif /* __MEMB_H__ */ diff --git a/uip/uip-1.0-changelog.txt b/uip/uip-1.0-changelog.txt new file mode 100644 index 0000000..1e6c61c --- /dev/null +++ b/uip/uip-1.0-changelog.txt @@ -0,0 +1,98 @@ +* A new API: protosockets that are similar to BSD sockets but does not + require any underlying multithreading system. + +* Very rudimentary IPv6 support + +* New application: DHCP client. Web server rewritten with protosockets. + +* Removed uIP zero-copy functionality in order to simplify uIP device + driver coding: outbound packets are now *always* stored in full in + the uip_buf buffer. + +* Checksum computation is now part of uip.c, but it still is possible + to implement them in assembly code by specifying a configuration + option. Checksum code now runs on architectures with 2-byte alignment. + +* Added TCP persistent timer. + +* Made all IP address representations use the new uip_ipaddr_ip + datatype for clarity. + +* Updated window behavior so that sending to a host with a small open + window works better now. + +* UDP API change: uip_udp_new() now takes port numbers in network byte + order like TCP functions. + +* Allow reception of packets when no IP address is configured to make + DHCP work. + +* Moved Ethernet address into main uIP module from ARP module. + +* Made constants explicit #defines and moved them out of the code + (header sizes, TCP options, TCP header length field). + +* If uip_len is less than that reported by the IP header, the packet + is discarded. If uip_len is greater than the length reported by the + IP header, uip_len is adjusted. + +* Moved header size definitions into header file. + +* Added uIP call for polling an application without triggering any + timer events. Removed redundant assignments of uip_len and uip_slen. + +* Removed compiler warning about icmp_input label being defined when + UIP_PINGADDRCONF was not used. + +* Added UIP_APPDATA_SIZE macro that holds the available buffer size + for user data. + +* Added uip_udp_bind() call. + +* Moved checksum code into main uIP module. + +* Switched the TCP, UDP and IP header structures to be structs rather + than typedefs. + +* Prefixed TCP state names with UIP_ to avoid name space + contamination. + +* Changed declarations of uip_appdatap and friends to void * to avoid + explicit typecasts. + +* Bugfixes + + o TCP: Fixed bug with high byte of peer window size. + + o TCP: Fixed bug that in some cases prevented concurrent reception and + transmission of TCP data. + + o TCP: uip_connect() didn't correctly calculate age of TIME_WAIT + connections. + + o TCP: Array index for uip_conns[] array was out of bounds in + comparison. Comparison changed to make index within bounds. + + o TCP: if the remote host crashes and tries to reestablish an old + connection, uIP should respond with an ACK with the correct + sequence and acknowledgment numbers, to which the remote host + should respond with an ACK. uIP did not respond with the correct + ACK. + + o TCP: Fixed check for SYNACK segment: now checks only relevant TCP + control flags and discards flags reserved for future expansion. + + o TCP: Fixed bug where uIP did not inform application that a connection + had been aborted during an active open. + + o TCP: FIN segment was accepted even though application had stopped + incoming data with uip_stop(). + + o TCP: A FINACK segment would not always correctly acknowledge data. + + o UDP: checksums are now calculated after all fields have been + filled in. + + o UDP: network byte order on lastport in uip_udp_new(). + + o IP: memset() bugs in IP fragment reassembly code fixed. diff --git a/uip/uip/Makefile.include b/uip/uip/Makefile.include new file mode 100644 index 0000000..3426dd1 --- /dev/null +++ b/uip/uip/Makefile.include @@ -0,0 +1,47 @@ + + +ifdef APPS + APPDIRS = $(foreach APP, $(APPS), ../apps/$(APP)) + -include $(foreach APP, $(APPS), ../apps/$(APP)/Makefile.$(APP)) + CFLAGS += $(addprefix -I../apps/,$(APPS)) +endif + +ifndef CCDEP + CCDEP = $(CC) +endif +ifndef CCDEPCFLAGS + CCDEPCFLAGS = $(CFLAGS) +endif +ifndef OBJECTDIR + OBJECTDIR = obj +endif + +ifeq (${wildcard $(OBJECTDIR)},) + DUMMY := ${shell mkdir $(OBJECTDIR)} +endif + + +vpath %.c . ../uip ../lib $(APPDIRS) + +$(OBJECTDIR)/%.o: %.c + $(CC) $(CFLAGS) -c $< -o $@ + +$(OBJECTDIR)/%.d: %.c + @set -e; rm -f $@; \ + $(CCDEP) -MM $(CCDEPCFLAGS) $< > $@.$$$$; \ + sed 's,\($*\)\.o[ :]*,$(OBJECTDIR)/\1.o $@ : ,g' < $@.$$$$ > $@; \ + rm -f $@.$$$$ + +UIP_SOURCES=uip.c uip_arp.c uiplib.c psock.c timer.c uip-neighbor.c + + +ifneq ($(MAKECMDGOALS),clean) +-include $(addprefix $(OBJECTDIR)/,$(UIP_SOURCES:.c=.d) \ + $(APP_SOURCES:.c=.d)) +endif + +uip.a: ${addprefix $(OBJECTDIR)/, $(UIP_SOURCES:.c=.o)} + $(AR) a $@ $^ + +apps.a: ${addprefix $(OBJECTDIR)/, $(APP_SOURCES:.c=.o)} + $(AR) a $@ $^ diff --git a/uip/uip/clock.h b/uip/uip/clock.h new file mode 100644 index 0000000..f34d78f --- /dev/null +++ b/uip/uip/clock.h @@ -0,0 +1,88 @@ +/** + * \defgroup clock Clock interface + * + * The clock interface is the interface between the \ref timer "timer library" + * and the platform specific clock functionality. The clock + * interface must be implemented for each platform that uses the \ref + * timer "timer library". + * + * The clock interface does only one this: it measures time. The clock + * interface provides a macro, CLOCK_SECOND, which corresponds to one + * second of system time. + * + * \sa \ref timer "Timer library" + * + * @{ + */ + +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: clock.h,v 1.3 2006/06/11 21:46:39 adam Exp $ + */ +#ifndef __CLOCK_H__ +#define __CLOCK_H__ + +#include "clock-arch.h" + +/** + * Initialize the clock library. + * + * This function initializes the clock library and should be called + * from the main() function of the system. + * + */ +void clock_init(void); + +/** + * Get the current clock time. + * + * This function returns the current system clock time. + * + * \return The current clock time, measured in system ticks. + */ +clock_time_t clock_time(void); + +/** + * A second, measured in system clock time. + * + * \hideinitializer + */ +#ifdef CLOCK_CONF_SECOND +#define CLOCK_SECOND CLOCK_CONF_SECOND +#else +#define CLOCK_SECOND (clock_time_t)32 +#endif + +#endif /* __CLOCK_H__ */ + +/** @} */ diff --git a/uip/uip/lc-addrlabels.h b/uip/uip/lc-addrlabels.h new file mode 100644 index 0000000..fe1387e --- /dev/null +++ b/uip/uip/lc-addrlabels.h @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2004-2005, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: lc-addrlabels.h,v 1.3 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \addtogroup lc + * @{ + */ + +/** + * \file + * Implementation of local continuations based on the "Labels as + * values" feature of gcc + * \author + * Adam Dunkels <adam@sics.se> + * + * This implementation of local continuations is based on a special + * feature of the GCC C compiler called "labels as values". This + * feature allows assigning pointers with the address of the code + * corresponding to a particular C label. + * + * For more information, see the GCC documentation: + * http://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html + * + * Thanks to dividuum for finding the nice local scope label + * implementation. + */ + +#ifndef __LC_ADDRLABELS_H__ +#define __LC_ADDRLABELS_H__ + +/** \hideinitializer */ +typedef void * lc_t; + +#define LC_INIT(s) s = NULL + + +#define LC_RESUME(s) \ + do { \ + if(s != NULL) { \ + goto *s; \ + } \ + } while(0) + +#define LC_SET(s) \ + do { ({ __label__ resume; resume: (s) = &&resume; }); }while(0) + +#define LC_END(s) + +#endif /* __LC_ADDRLABELS_H__ */ + +/** @} */ diff --git a/uip/uip/lc-switch.h b/uip/uip/lc-switch.h new file mode 100644 index 0000000..f32885f --- /dev/null +++ b/uip/uip/lc-switch.h @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2004-2005, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: lc-switch.h,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \addtogroup lc + * @{ + */ + +/** + * \file + * Implementation of local continuations based on switch() statment + * \author Adam Dunkels <adam@sics.se> + * + * This implementation of local continuations uses the C switch() + * statement to resume execution of a function somewhere inside the + * function's body. The implementation is based on the fact that + * switch() statements are able to jump directly into the bodies of + * control structures such as if() or while() statmenets. + * + * This implementation borrows heavily from Simon Tatham's coroutines + * implementation in C: + * http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html + */ + +#ifndef __LC_SWITCH_H__ +#define __LC_SWTICH_H__ + +/* WARNING! lc implementation using switch() does not work if an + LC_SET() is done within another switch() statement! */ + +/** \hideinitializer */ +typedef unsigned short lc_t; + +#define LC_INIT(s) s = 0; + +#define LC_RESUME(s) switch(s) { case 0: + +#define LC_SET(s) s = __LINE__; case __LINE__: + +#define LC_END(s) } + +#endif /* __LC_SWITCH_H__ */ + +/** @} */ diff --git a/uip/uip/lc.h b/uip/uip/lc.h new file mode 100644 index 0000000..a9e9d46 --- /dev/null +++ b/uip/uip/lc.h @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2004-2005, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: lc.h,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \addtogroup pt + * @{ + */ + +/** + * \defgroup lc Local continuations + * @{ + * + * Local continuations form the basis for implementing protothreads. A + * local continuation can be <i>set</i> in a specific function to + * capture the state of the function. After a local continuation has + * been set can be <i>resumed</i> in order to restore the state of the + * function at the point where the local continuation was set. + * + * + */ + +/** + * \file lc.h + * Local continuations + * \author + * Adam Dunkels <adam@sics.se> + * + */ + +#ifdef DOXYGEN +/** + * Initialize a local continuation. + * + * This operation initializes the local continuation, thereby + * unsetting any previously set continuation state. + * + * \hideinitializer + */ +#define LC_INIT(lc) + +/** + * Set a local continuation. + * + * The set operation saves the state of the function at the point + * where the operation is executed. As far as the set operation is + * concerned, the state of the function does <b>not</b> include the + * call-stack or local (automatic) variables, but only the program + * counter and such CPU registers that needs to be saved. + * + * \hideinitializer + */ +#define LC_SET(lc) + +/** + * Resume a local continuation. + * + * The resume operation resumes a previously set local continuation, thus + * restoring the state in which the function was when the local + * continuation was set. If the local continuation has not been + * previously set, the resume operation does nothing. + * + * \hideinitializer + */ +#define LC_RESUME(lc) + +/** + * Mark the end of local continuation usage. + * + * The end operation signifies that local continuations should not be + * used any more in the function. This operation is not needed for + * most implementations of local continuation, but is required by a + * few implementations. + * + * \hideinitializer + */ +#define LC_END(lc) + +/** + * \var typedef lc_t; + * + * The local continuation type. + * + * \hideinitializer + */ +#endif /* DOXYGEN */ + +#ifndef __LC_H__ +#define __LC_H__ + +#ifdef LC_CONF_INCLUDE +#include LC_CONF_INCLUDE +#else +#include "lc-switch.h" +#endif /* LC_CONF_INCLUDE */ + +#endif /* __LC_H__ */ + +/** @} */ +/** @} */ diff --git a/uip/uip/psock.c b/uip/uip/psock.c new file mode 100644 index 0000000..f284cb9 --- /dev/null +++ b/uip/uip/psock.c @@ -0,0 +1,338 @@ +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: psock.c,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +#include <stdio.h> +#include <string.h> + +#include "uipopt.h" +#include "psock.h" +#include "uip.h" + +#define STATE_NONE 0 +#define STATE_ACKED 1 +#define STATE_READ 2 +#define STATE_BLOCKED_NEWDATA 3 +#define STATE_BLOCKED_CLOSE 4 +#define STATE_BLOCKED_SEND 5 +#define STATE_DATA_SENT 6 + +/* + * Return value of the buffering functions that indicates that a + * buffer was not filled by incoming data. + * + */ +#define BUF_NOT_FULL 0 +#define BUF_NOT_FOUND 0 + +/* + * Return value of the buffering functions that indicates that a + * buffer was completely filled by incoming data. + * + */ +#define BUF_FULL 1 + +/* + * Return value of the buffering functions that indicates that an + * end-marker byte was found. + * + */ +#define BUF_FOUND 2 + +/*---------------------------------------------------------------------------*/ +static void +buf_setup(struct psock_buf *buf, + u8_t *bufptr, u16_t bufsize) +{ + buf->ptr = bufptr; + buf->left = bufsize; +} +/*---------------------------------------------------------------------------*/ +static u8_t +buf_bufdata(struct psock_buf *buf, u16_t len, + u8_t **dataptr, u16_t *datalen) +{ + if(*datalen < buf->left) { + memcpy(buf->ptr, *dataptr, *datalen); + buf->ptr += *datalen; + buf->left -= *datalen; + *dataptr += *datalen; + *datalen = 0; + return BUF_NOT_FULL; + } else if(*datalen == buf->left) { + memcpy(buf->ptr, *dataptr, *datalen); + buf->ptr += *datalen; + buf->left = 0; + *dataptr += *datalen; + *datalen = 0; + return BUF_FULL; + } else { + memcpy(buf->ptr, *dataptr, buf->left); + buf->ptr += buf->left; + *datalen -= buf->left; + *dataptr += buf->left; + buf->left = 0; + return BUF_FULL; + } +} +/*---------------------------------------------------------------------------*/ +static u8_t +buf_bufto(register struct psock_buf *buf, u8_t endmarker, + register u8_t **dataptr, register u16_t *datalen) +{ + u8_t c; + while(buf->left > 0 && *datalen > 0) { + c = *buf->ptr = **dataptr; + ++*dataptr; + ++buf->ptr; + --*datalen; + --buf->left; + + if(c == endmarker) { + return BUF_FOUND; + } + } + + if(*datalen == 0) { + return BUF_NOT_FOUND; + } + + while(*datalen > 0) { + c = **dataptr; + --*datalen; + ++*dataptr; + + if(c == endmarker) { + return BUF_FOUND | BUF_FULL; + } + } + + return BUF_FULL; +} +/*---------------------------------------------------------------------------*/ +static char +send_data(register struct psock *s) +{ + if(s->state != STATE_DATA_SENT || uip_rexmit()) { + if(s->sendlen > uip_mss()) { + uip_send(s->sendptr, uip_mss()); + } else { + uip_send(s->sendptr, s->sendlen); + } + s->state = STATE_DATA_SENT; + return 1; + } + return 0; +} +/*---------------------------------------------------------------------------*/ +static char +data_acked(register struct psock *s) +{ + if(s->state == STATE_DATA_SENT && uip_acked()) { + if(s->sendlen > uip_mss()) { + s->sendlen -= uip_mss(); + s->sendptr += uip_mss(); + } else { + s->sendptr += s->sendlen; + s->sendlen = 0; + } + s->state = STATE_ACKED; + return 1; + } + return 0; +} +/*---------------------------------------------------------------------------*/ +PT_THREAD(psock_send(register struct psock *s, const char *buf, + unsigned int len)) +{ + PT_BEGIN(&s->psockpt); + + /* If there is no data to send, we exit immediately. */ + if(len == 0) { + PT_EXIT(&s->psockpt); + } + + /* Save the length of and a pointer to the data that is to be + sent. */ + s->sendptr = buf; + s->sendlen = len; + + s->state = STATE_NONE; + + /* We loop here until all data is sent. The s->sendlen variable is + updated by the data_sent() function. */ + while(s->sendlen > 0) { + + /* + * The condition for this PT_WAIT_UNTIL is a little tricky: the + * protothread will wait here until all data has been acknowledged + * (data_acked() returns true) and until all data has been sent + * (send_data() returns true). The two functions data_acked() and + * send_data() must be called in succession to ensure that all + * data is sent. Therefore the & operator is used instead of the + * && operator, which would cause only the data_acked() function + * to be called when it returns false. + */ + PT_WAIT_UNTIL(&s->psockpt, data_acked(s) & send_data(s)); + } + + s->state = STATE_NONE; + + PT_END(&s->psockpt); +} +/*---------------------------------------------------------------------------*/ +PT_THREAD(psock_generator_send(register struct psock *s, + unsigned short (*generate)(void *), void *arg)) +{ + PT_BEGIN(&s->psockpt); + + /* Ensure that there is a generator function to call. */ + if(generate == NULL) { + PT_EXIT(&s->psockpt); + } + + /* Call the generator function to generate the data in the + uip_appdata buffer. */ + s->sendlen = generate(arg); + s->sendptr = uip_appdata; + + s->state = STATE_NONE; + do { + /* Call the generator function again if we are called to perform a + retransmission. */ + if(uip_rexmit()) { + generate(arg); + } + /* Wait until all data is sent and acknowledged. */ + PT_WAIT_UNTIL(&s->psockpt, data_acked(s) & send_data(s)); + } while(s->sendlen > 0); + + s->state = STATE_NONE; + + PT_END(&s->psockpt); +} +/*---------------------------------------------------------------------------*/ +u16_t +psock_datalen(struct psock *psock) +{ + return psock->bufsize - psock->buf.left; +} +/*---------------------------------------------------------------------------*/ +char +psock_newdata(struct psock *s) +{ + if(s->readlen > 0) { + /* There is data in the uip_appdata buffer that has not yet been + read with the PSOCK_READ functions. */ + return 1; + } else if(s->state == STATE_READ) { + /* All data in uip_appdata buffer already consumed. */ + s->state = STATE_BLOCKED_NEWDATA; + return 0; + } else if(uip_newdata()) { + /* There is new data that has not been consumed. */ + return 1; + } else { + /* There is no new data. */ + return 0; + } +} +/*---------------------------------------------------------------------------*/ +PT_THREAD(psock_readto(register struct psock *psock, unsigned char c)) +{ + PT_BEGIN(&psock->psockpt); + + buf_setup(&psock->buf, psock->bufptr, psock->bufsize); + + /* XXX: Should add buf_checkmarker() before do{} loop, if + incoming data has been handled while waiting for a write. */ + + do { + if(psock->readlen == 0) { + PT_WAIT_UNTIL(&psock->psockpt, psock_newdata(psock)); + psock->state = STATE_READ; + psock->readptr = (u8_t *)uip_appdata; + psock->readlen = uip_datalen(); + } + } while((buf_bufto(&psock->buf, c, + &psock->readptr, + &psock->readlen) & BUF_FOUND) == 0); + + if(psock_datalen(psock) == 0) { + psock->state = STATE_NONE; + PT_RESTART(&psock->psockpt); + } + PT_END(&psock->psockpt); +} +/*---------------------------------------------------------------------------*/ +PT_THREAD(psock_readbuf(register struct psock *psock)) +{ + PT_BEGIN(&psock->psockpt); + + buf_setup(&psock->buf, psock->bufptr, psock->bufsize); + + /* XXX: Should add buf_checkmarker() before do{} loop, if + incoming data has been handled while waiting for a write. */ + + do { + if(psock->readlen == 0) { + PT_WAIT_UNTIL(&psock->psockpt, psock_newdata(psock)); + printf("Waited for newdata\n"); + psock->state = STATE_READ; + psock->readptr = (u8_t *)uip_appdata; + psock->readlen = uip_datalen(); + } + } while(buf_bufdata(&psock->buf, psock->bufsize, + &psock->readptr, + &psock->readlen) != BUF_FULL); + + if(psock_datalen(psock) == 0) { + psock->state = STATE_NONE; + PT_RESTART(&psock->psockpt); + } + PT_END(&psock->psockpt); +} +/*---------------------------------------------------------------------------*/ +void +psock_init(register struct psock *psock, char *buffer, unsigned int buffersize) +{ + psock->state = STATE_NONE; + psock->readlen = 0; + psock->bufptr = buffer; + psock->bufsize = buffersize; + buf_setup(&psock->buf, buffer, buffersize); + PT_INIT(&psock->pt); + PT_INIT(&psock->psockpt); +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/uip/psock.h b/uip/uip/psock.h new file mode 100644 index 0000000..3dffa73 --- /dev/null +++ b/uip/uip/psock.h @@ -0,0 +1,380 @@ +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: psock.h,v 1.3 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \defgroup psock Protosockets library + * @{ + * + * The protosocket library provides an interface to the uIP stack that is + * similar to the traditional BSD socket interface. Unlike programs + * written for the ordinary uIP event-driven interface, programs + * written with the protosocket library are executed in a sequential + * fashion and does not have to be implemented as explicit state + * machines. + * + * Protosockets only work with TCP connections. + * + * The protosocket library uses \ref pt protothreads to provide + * sequential control flow. This makes the protosockets lightweight in + * terms of memory, but also means that protosockets inherits the + * functional limitations of protothreads. Each protosocket lives only + * within a single function. Automatic variables (stack variables) are + * not retained across a protosocket library function call. + * + * \note Because the protosocket library uses protothreads, local + * variables will not always be saved across a call to a protosocket + * library function. It is therefore advised that local variables are + * used with extreme care. + * + * The protosocket library provides functions for sending data without + * having to deal with retransmissions and acknowledgements, as well + * as functions for reading data without having to deal with data + * being split across more than one TCP segment. + * + * Because each protosocket runs as a protothread, the protosocket has to be + * started with a call to PSOCK_BEGIN() at the start of the function + * in which the protosocket is used. Similarly, the protosocket protothread can + * be terminated by a call to PSOCK_EXIT(). + * + */ + +/** + * \file + * Protosocket library header file + * \author + * Adam Dunkels <adam@sics.se> + * + */ + +#ifndef __PSOCK_H__ +#define __PSOCK_H__ + +#include "uipopt.h" +#include "pt.h" + + /* + * The structure that holds the state of a buffer. + * + * This structure holds the state of a uIP buffer. The structure has + * no user-visible elements, but is used through the functions + * provided by the library. + * + */ +struct psock_buf { + u8_t *ptr; + unsigned short left; +}; + +/** + * The representation of a protosocket. + * + * The protosocket structrure is an opaque structure with no user-visible + * elements. + */ +struct psock { + struct pt pt, psockpt; /* Protothreads - one that's using the psock + functions, and one that runs inside the + psock functions. */ + const u8_t *sendptr; /* Pointer to the next data to be sent. */ + u8_t *readptr; /* Pointer to the next data to be read. */ + + char *bufptr; /* Pointer to the buffer used for buffering + incoming data. */ + + u16_t sendlen; /* The number of bytes left to be sent. */ + u16_t readlen; /* The number of bytes left to be read. */ + + struct psock_buf buf; /* The structure holding the state of the + input buffer. */ + unsigned int bufsize; /* The size of the input buffer. */ + + unsigned char state; /* The state of the protosocket. */ +}; + +void psock_init(struct psock *psock, char *buffer, unsigned int buffersize); +/** + * Initialize a protosocket. + * + * This macro initializes a protosocket and must be called before the + * protosocket is used. The initialization also specifies the input buffer + * for the protosocket. + * + * \param psock (struct psock *) A pointer to the protosocket to be + * initialized + * + * \param buffer (char *) A pointer to the input buffer for the + * protosocket. + * + * \param buffersize (unsigned int) The size of the input buffer. + * + * \hideinitializer + */ +#define PSOCK_INIT(psock, buffer, buffersize) \ + psock_init(psock, buffer, buffersize) + +/** + * Start the protosocket protothread in a function. + * + * This macro starts the protothread associated with the protosocket and + * must come before other protosocket calls in the function it is used. + * + * \param psock (struct psock *) A pointer to the protosocket to be + * started. + * + * \hideinitializer + */ +#define PSOCK_BEGIN(psock) PT_BEGIN(&((psock)->pt)) + +PT_THREAD(psock_send(struct psock *psock, const char *buf, unsigned int len)); +/** + * Send data. + * + * This macro sends data over a protosocket. The protosocket protothread blocks + * until all data has been sent and is known to have been received by + * the remote end of the TCP connection. + * + * \param psock (struct psock *) A pointer to the protosocket over which + * data is to be sent. + * + * \param data (char *) A pointer to the data that is to be sent. + * + * \param datalen (unsigned int) The length of the data that is to be + * sent. + * + * \hideinitializer + */ +#define PSOCK_SEND(psock, data, datalen) \ + PT_WAIT_THREAD(&((psock)->pt), psock_send(psock, data, datalen)) + +/** + * \brief Send a null-terminated string. + * \param psock Pointer to the protosocket. + * \param str The string to be sent. + * + * This function sends a null-terminated string over the + * protosocket. + * + * \hideinitializer + */ +#define PSOCK_SEND_STR(psock, str) \ + PT_WAIT_THREAD(&((psock)->pt), psock_send(psock, str, strlen(str))) + +PT_THREAD(psock_generator_send(struct psock *psock, + unsigned short (*f)(void *), void *arg)); + +/** + * \brief Generate data with a function and send it + * \param psock Pointer to the protosocket. + * \param generator Pointer to the generator function + * \param arg Argument to the generator function + * + * This function generates data and sends it over the + * protosocket. This can be used to dynamically generate + * data for a transmission, instead of generating the data + * in a buffer beforehand. This function reduces the need for + * buffer memory. The generator function is implemented by + * the application, and a pointer to the function is given + * as an argument with the call to PSOCK_GENERATOR_SEND(). + * + * The generator function should place the generated data + * directly in the uip_appdata buffer, and return the + * length of the generated data. The generator function is + * called by the protosocket layer when the data first is + * sent, and once for every retransmission that is needed. + * + * \hideinitializer + */ +#define PSOCK_GENERATOR_SEND(psock, generator, arg) \ + PT_WAIT_THREAD(&((psock)->pt), \ + psock_generator_send(psock, generator, arg)) + + +/** + * Close a protosocket. + * + * This macro closes a protosocket and can only be called from within the + * protothread in which the protosocket lives. + * + * \param psock (struct psock *) A pointer to the protosocket that is to + * be closed. + * + * \hideinitializer + */ +#define PSOCK_CLOSE(psock) uip_close() + +PT_THREAD(psock_readbuf(struct psock *psock)); +/** + * Read data until the buffer is full. + * + * This macro will block waiting for data and read the data into the + * input buffer specified with the call to PSOCK_INIT(). Data is read + * until the buffer is full.. + * + * \param psock (struct psock *) A pointer to the protosocket from which + * data should be read. + * + * \hideinitializer + */ +#define PSOCK_READBUF(psock) \ + PT_WAIT_THREAD(&((psock)->pt), psock_readbuf(psock)) + +PT_THREAD(psock_readto(struct psock *psock, unsigned char c)); +/** + * Read data up to a specified character. + * + * This macro will block waiting for data and read the data into the + * input buffer specified with the call to PSOCK_INIT(). Data is only + * read until the specifieed character appears in the data stream. + * + * \param psock (struct psock *) A pointer to the protosocket from which + * data should be read. + * + * \param c (char) The character at which to stop reading. + * + * \hideinitializer + */ +#define PSOCK_READTO(psock, c) \ + PT_WAIT_THREAD(&((psock)->pt), psock_readto(psock, c)) + +/** + * The length of the data that was previously read. + * + * This macro returns the length of the data that was previously read + * using PSOCK_READTO() or PSOCK_READ(). + * + * \param psock (struct psock *) A pointer to the protosocket holding the data. + * + * \hideinitializer + */ +#define PSOCK_DATALEN(psock) psock_datalen(psock) + +u16_t psock_datalen(struct psock *psock); + +/** + * Exit the protosocket's protothread. + * + * This macro terminates the protothread of the protosocket and should + * almost always be used in conjunction with PSOCK_CLOSE(). + * + * \sa PSOCK_CLOSE_EXIT() + * + * \param psock (struct psock *) A pointer to the protosocket. + * + * \hideinitializer + */ +#define PSOCK_EXIT(psock) PT_EXIT(&((psock)->pt)) + +/** + * Close a protosocket and exit the protosocket's protothread. + * + * This macro closes a protosocket and exits the protosocket's protothread. + * + * \param psock (struct psock *) A pointer to the protosocket. + * + * \hideinitializer + */ +#define PSOCK_CLOSE_EXIT(psock) \ + do { \ + PSOCK_CLOSE(psock); \ + PSOCK_EXIT(psock); \ + } while(0) + +/** + * Declare the end of a protosocket's protothread. + * + * This macro is used for declaring that the protosocket's protothread + * ends. It must always be used together with a matching PSOCK_BEGIN() + * macro. + * + * \param psock (struct psock *) A pointer to the protosocket. + * + * \hideinitializer + */ +#define PSOCK_END(psock) PT_END(&((psock)->pt)) + +char psock_newdata(struct psock *s); + +/** + * Check if new data has arrived on a protosocket. + * + * This macro is used in conjunction with the PSOCK_WAIT_UNTIL() + * macro to check if data has arrived on a protosocket. + * + * \param psock (struct psock *) A pointer to the protosocket. + * + * \hideinitializer + */ +#define PSOCK_NEWDATA(psock) psock_newdata(psock) + +/** + * Wait until a condition is true. + * + * This macro blocks the protothread until the specified condition is + * true. The macro PSOCK_NEWDATA() can be used to check if new data + * arrives when the protosocket is waiting. + * + * Typically, this macro is used as follows: + * + \code + PT_THREAD(thread(struct psock *s, struct timer *t)) + { + PSOCK_BEGIN(s); + + PSOCK_WAIT_UNTIL(s, PSOCK_NEWADATA(s) || timer_expired(t)); + + if(PSOCK_NEWDATA(s)) { + PSOCK_READTO(s, '\n'); + } else { + handle_timed_out(s); + } + + PSOCK_END(s); + } + \endcode + * + * \param psock (struct psock *) A pointer to the protosocket. + * \param condition The condition to wait for. + * + * \hideinitializer + */ +#define PSOCK_WAIT_UNTIL(psock, condition) \ + PT_WAIT_UNTIL(&((psock)->pt), (condition)); + +#define PSOCK_WAIT_THREAD(psock, condition) \ + PT_WAIT_THREAD(&((psock)->pt), (condition)) + +#endif /* __PSOCK_H__ */ + +/** @} */ diff --git a/uip/uip/pt.h b/uip/uip/pt.h new file mode 100644 index 0000000..9f1f64d --- /dev/null +++ b/uip/uip/pt.h @@ -0,0 +1,323 @@ +/* + * Copyright (c) 2004-2005, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: pt.h,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \addtogroup pt + * @{ + */ + +/** + * \file + * Protothreads implementation. + * \author + * Adam Dunkels <adam@sics.se> + * + */ + +#ifndef __PT_H__ +#define __PT_H__ + +#include "lc.h" + +struct pt { + lc_t lc; +}; + +#define PT_WAITING 0 +#define PT_EXITED 1 +#define PT_ENDED 2 +#define PT_YIELDED 3 + +/** + * \name Initialization + * @{ + */ + +/** + * Initialize a protothread. + * + * Initializes a protothread. Initialization must be done prior to + * starting to execute the protothread. + * + * \param pt A pointer to the protothread control structure. + * + * \sa PT_SPAWN() + * + * \hideinitializer + */ +#define PT_INIT(pt) LC_INIT((pt)->lc) + +/** @} */ + +/** + * \name Declaration and definition + * @{ + */ + +/** + * Declaration of a protothread. + * + * This macro is used to declare a protothread. All protothreads must + * be declared with this macro. + * + * \param name_args The name and arguments of the C function + * implementing the protothread. + * + * \hideinitializer + */ +#define PT_THREAD(name_args) char name_args + +/** + * Declare the start of a protothread inside the C function + * implementing the protothread. + * + * This macro is used to declare the starting point of a + * protothread. It should be placed at the start of the function in + * which the protothread runs. All C statements above the PT_BEGIN() + * invokation will be executed each time the protothread is scheduled. + * + * \param pt A pointer to the protothread control structure. + * + * \hideinitializer + */ +#define PT_BEGIN(pt) { char PT_YIELD_FLAG = 1; LC_RESUME((pt)->lc) + +/** + * Declare the end of a protothread. + * + * This macro is used for declaring that a protothread ends. It must + * always be used together with a matching PT_BEGIN() macro. + * + * \param pt A pointer to the protothread control structure. + * + * \hideinitializer + */ +#define PT_END(pt) LC_END((pt)->lc); PT_YIELD_FLAG = 0; \ + PT_INIT(pt); return PT_ENDED; } + +/** @} */ + +/** + * \name Blocked wait + * @{ + */ + +/** + * Block and wait until condition is true. + * + * This macro blocks the protothread until the specified condition is + * true. + * + * \param pt A pointer to the protothread control structure. + * \param condition The condition. + * + * \hideinitializer + */ +#define PT_WAIT_UNTIL(pt, condition) \ + do { \ + LC_SET((pt)->lc); \ + if(!(condition)) { \ + return PT_WAITING; \ + } \ + } while(0) + +/** + * Block and wait while condition is true. + * + * This function blocks and waits while condition is true. See + * PT_WAIT_UNTIL(). + * + * \param pt A pointer to the protothread control structure. + * \param cond The condition. + * + * \hideinitializer + */ +#define PT_WAIT_WHILE(pt, cond) PT_WAIT_UNTIL((pt), !(cond)) + +/** @} */ + +/** + * \name Hierarchical protothreads + * @{ + */ + +/** + * Block and wait until a child protothread completes. + * + * This macro schedules a child protothread. The current protothread + * will block until the child protothread completes. + * + * \note The child protothread must be manually initialized with the + * PT_INIT() function before this function is used. + * + * \param pt A pointer to the protothread control structure. + * \param thread The child protothread with arguments + * + * \sa PT_SPAWN() + * + * \hideinitializer + */ +#define PT_WAIT_THREAD(pt, thread) PT_WAIT_WHILE((pt), PT_SCHEDULE(thread)) + +/** + * Spawn a child protothread and wait until it exits. + * + * This macro spawns a child protothread and waits until it exits. The + * macro can only be used within a protothread. + * + * \param pt A pointer to the protothread control structure. + * \param child A pointer to the child protothread's control structure. + * \param thread The child protothread with arguments + * + * \hideinitializer + */ +#define PT_SPAWN(pt, child, thread) \ + do { \ + PT_INIT((child)); \ + PT_WAIT_THREAD((pt), (thread)); \ + } while(0) + +/** @} */ + +/** + * \name Exiting and restarting + * @{ + */ + +/** + * Restart the protothread. + * + * This macro will block and cause the running protothread to restart + * its execution at the place of the PT_BEGIN() call. + * + * \param pt A pointer to the protothread control structure. + * + * \hideinitializer + */ +#define PT_RESTART(pt) \ + do { \ + PT_INIT(pt); \ + return PT_WAITING; \ + } while(0) + +/** + * Exit the protothread. + * + * This macro causes the protothread to exit. If the protothread was + * spawned by another protothread, the parent protothread will become + * unblocked and can continue to run. + * + * \param pt A pointer to the protothread control structure. + * + * \hideinitializer + */ +#define PT_EXIT(pt) \ + do { \ + PT_INIT(pt); \ + return PT_EXITED; \ + } while(0) + +/** @} */ + +/** + * \name Calling a protothread + * @{ + */ + +/** + * Schedule a protothread. + * + * This function shedules a protothread. The return value of the + * function is non-zero if the protothread is running or zero if the + * protothread has exited. + * + * \param f The call to the C function implementing the protothread to + * be scheduled + * + * \hideinitializer + */ +#define PT_SCHEDULE(f) ((f) == PT_WAITING) + +/** @} */ + +/** + * \name Yielding from a protothread + * @{ + */ + +/** + * Yield from the current protothread. + * + * This function will yield the protothread, thereby allowing other + * processing to take place in the system. + * + * \param pt A pointer to the protothread control structure. + * + * \hideinitializer + */ +#define PT_YIELD(pt) \ + do { \ + PT_YIELD_FLAG = 0; \ + LC_SET((pt)->lc); \ + if(PT_YIELD_FLAG == 0) { \ + return PT_YIELDED; \ + } \ + } while(0) + +/** + * \brief Yield from the protothread until a condition occurs. + * \param pt A pointer to the protothread control structure. + * \param cond The condition. + * + * This function will yield the protothread, until the + * specified condition evaluates to true. + * + * + * \hideinitializer + */ +#define PT_YIELD_UNTIL(pt, cond) \ + do { \ + PT_YIELD_FLAG = 0; \ + LC_SET((pt)->lc); \ + if((PT_YIELD_FLAG == 0) || !(cond)) { \ + return PT_YIELDED; \ + } \ + } while(0) + +/** @} */ + +#endif /* __PT_H__ */ + +/** @} */ diff --git a/uip/uip/timer.c b/uip/uip/timer.c new file mode 100644 index 0000000..74eedf6 --- /dev/null +++ b/uip/uip/timer.c @@ -0,0 +1,127 @@ +/** + * \addtogroup timer + * @{ + */ + +/** + * \file + * Timer library implementation. + * \author + * Adam Dunkels <adam@sics.se> + */ + +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: timer.c,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +#include "clock.h" +#include "timer.h" + +/*---------------------------------------------------------------------------*/ +/** + * Set a timer. + * + * This function is used to set a timer for a time sometime in the + * future. The function timer_expired() will evaluate to true after + * the timer has expired. + * + * \param t A pointer to the timer + * \param interval The interval before the timer expires. + * + */ +void +timer_set(struct timer *t, clock_time_t interval) +{ + t->interval = interval; + t->start = clock_time(); +} +/*---------------------------------------------------------------------------*/ +/** + * Reset the timer with the same interval. + * + * This function resets the timer with the same interval that was + * given to the timer_set() function. The start point of the interval + * is the exact time that the timer last expired. Therefore, this + * function will cause the timer to be stable over time, unlike the + * timer_rester() function. + * + * \param t A pointer to the timer. + * + * \sa timer_restart() + */ +void +timer_reset(struct timer *t) +{ + t->start += t->interval; +} +/*---------------------------------------------------------------------------*/ +/** + * Restart the timer from the current point in time + * + * This function restarts a timer with the same interval that was + * given to the timer_set() function. The timer will start at the + * current time. + * + * \note A periodic timer will drift if this function is used to reset + * it. For preioric timers, use the timer_reset() function instead. + * + * \param t A pointer to the timer. + * + * \sa timer_reset() + */ +void +timer_restart(struct timer *t) +{ + t->start = clock_time(); +} +/*---------------------------------------------------------------------------*/ +/** + * Check if a timer has expired. + * + * This function tests if a timer has expired and returns true or + * false depending on its status. + * + * \param t A pointer to the timer + * + * \return Non-zero if the timer has expired, zero otherwise. + * + */ +int +timer_expired(struct timer *t) +{ + return (clock_time_t)(clock_time() - t->start) >= (clock_time_t)t->interval; +} +/*---------------------------------------------------------------------------*/ + +/** @} */ diff --git a/uip/uip/timer.h b/uip/uip/timer.h new file mode 100644 index 0000000..057bea4 --- /dev/null +++ b/uip/uip/timer.h @@ -0,0 +1,86 @@ +/** + * \defgroup timer Timer library + * + * The timer library provides functions for setting, resetting and + * restarting timers, and for checking if a timer has expired. An + * application must "manually" check if its timers have expired; this + * is not done automatically. + * + * A timer is declared as a \c struct \c timer and all access to the + * timer is made by a pointer to the declared timer. + * + * \note The timer library uses the \ref clock "Clock library" to + * measure time. Intervals should be specified in the format used by + * the clock library. + * + * @{ + */ + + +/** + * \file + * Timer library header file. + * \author + * Adam Dunkels <adam@sics.se> + */ + +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: timer.h,v 1.3 2006/06/11 21:46:39 adam Exp $ + */ +#ifndef __TIMER_H__ +#define __TIMER_H__ + +#include "clock.h" + +/** + * A timer. + * + * This structure is used for declaring a timer. The timer must be set + * with timer_set() before it can be used. + * + * \hideinitializer + */ +struct timer { + clock_time_t start; + clock_time_t interval; +}; + +void timer_set(struct timer *t, clock_time_t interval); +void timer_reset(struct timer *t); +void timer_restart(struct timer *t); +int timer_expired(struct timer *t); + +#endif /* __TIMER_H__ */ + +/** @} */ diff --git a/uip/uip/uip-fw.c b/uip/uip/uip-fw.c new file mode 100644 index 0000000..01858ea --- /dev/null +++ b/uip/uip/uip-fw.c @@ -0,0 +1,532 @@ +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: uip-fw.c,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ +/** + * \addtogroup uip + * @{ + */ + +/** + * \defgroup uipfw uIP packet forwarding + * @{ + * + */ + +/** + * \file + * uIP packet forwarding. + * \author Adam Dunkels <adam@sics.se> + * + * This file implements a number of simple functions which do packet + * forwarding over multiple network interfaces with uIP. + * + */ + +#include "uip.h" +#include "uip_arch.h" +#include "uip-fw.h" + +#include <string.h> /* for memcpy() */ + +/* + * The list of registered network interfaces. + */ +static struct uip_fw_netif *netifs = NULL; + +/* + * A pointer to the default network interface. + */ +static struct uip_fw_netif *defaultnetif = NULL; + +struct tcpip_hdr { + /* IP header. */ + u8_t vhl, + tos; + u16_t len, + ipid, + ipoffset; + u8_t ttl, + proto; + u16_t ipchksum; + u16_t srcipaddr[2], + destipaddr[2]; + + /* TCP header. */ + u16_t srcport, + destport; + u8_t seqno[4], + ackno[4], + tcpoffset, + flags, + wnd[2]; + u16_t tcpchksum; + u8_t urgp[2]; + u8_t optdata[4]; +}; + +struct icmpip_hdr { + /* IP header. */ + u8_t vhl, + tos, + len[2], + ipid[2], + ipoffset[2], + ttl, + proto; + u16_t ipchksum; + u16_t srcipaddr[2], + destipaddr[2]; + /* ICMP (echo) header. */ + u8_t type, icode; + u16_t icmpchksum; + u16_t id, seqno; + u8_t payload[1]; +}; + +/* ICMP ECHO. */ +#define ICMP_ECHO 8 + +/* ICMP TIME-EXCEEDED. */ +#define ICMP_TE 11 + +/* + * Pointer to the TCP/IP headers of the packet in the uip_buf buffer. + */ +#define BUF ((struct tcpip_hdr *)&uip_buf[UIP_LLH_LEN]) + +/* + * Pointer to the ICMP/IP headers of the packet in the uip_buf buffer. + */ +#define ICMPBUF ((struct icmpip_hdr *)&uip_buf[UIP_LLH_LEN]) + +/* + * Certain fields of an IP packet that are used for identifying + * duplicate packets. + */ +struct fwcache_entry { + u16_t timer; + + u16_t srcipaddr[2]; + u16_t destipaddr[2]; + u16_t ipid; + u8_t proto; + u8_t unused; + +#if notdef + u16_t payload[2]; +#endif + +#if UIP_REASSEMBLY > 0 + u16_t len, offset; +#endif +}; + +/* + * The number of packets to remember when looking for duplicates. + */ +#ifdef UIP_CONF_FWCACHE_SIZE +#define FWCACHE_SIZE UIP_CONF_FWCACHE_SIZE +#else +#define FWCACHE_SIZE 2 +#endif + + +/* + * A cache of packet header fields which are used for + * identifying duplicate packets. + */ +static struct fwcache_entry fwcache[FWCACHE_SIZE]; + +/** + * \internal + * The time that a packet cache is active. + */ +#define FW_TIME 20 + +/*------------------------------------------------------------------------------*/ +/** + * Initialize the uIP packet forwarding module. + */ +/*------------------------------------------------------------------------------*/ +void +uip_fw_init(void) +{ + struct uip_fw_netif *t; + defaultnetif = NULL; + while(netifs != NULL) { + t = netifs; + netifs = netifs->next; + t->next = NULL; + } +} +/*------------------------------------------------------------------------------*/ +/** + * \internal + * Check if an IP address is within the network defined by an IP + * address and a netmask. + * + * \param ipaddr The IP address to be checked. + * \param netipaddr The IP address of the network. + * \param netmask The netmask of the network. + * + * \return Non-zero if IP address is in network, zero otherwise. + */ +/*------------------------------------------------------------------------------*/ +static unsigned char +ipaddr_maskcmp(u16_t *ipaddr, u16_t *netipaddr, u16_t *netmask) +{ + return (ipaddr[0] & netmask [0]) == (netipaddr[0] & netmask[0]) && + (ipaddr[1] & netmask[1]) == (netipaddr[1] & netmask[1]); +} +/*------------------------------------------------------------------------------*/ +/** + * \internal + * Send out an ICMP TIME-EXCEEDED message. + * + * This function replaces the packet in the uip_buf buffer with the + * ICMP packet. + */ +/*------------------------------------------------------------------------------*/ +static void +time_exceeded(void) +{ + u16_t tmp16; + + /* We don't send out ICMP errors for ICMP messages. */ + if(ICMPBUF->proto == UIP_PROTO_ICMP) { + uip_len = 0; + return; + } + /* Copy fields from packet header into payload of this ICMP packet. */ + memcpy(&(ICMPBUF->payload[0]), ICMPBUF, 28); + + /* Set the ICMP type and code. */ + ICMPBUF->type = ICMP_TE; + ICMPBUF->icode = 0; + + /* Calculate the ICMP checksum. */ + ICMPBUF->icmpchksum = 0; + ICMPBUF->icmpchksum = ~uip_chksum((u16_t *)&(ICMPBUF->type), 36); + + /* Set the IP destination address to be the source address of the + original packet. */ + tmp16= BUF->destipaddr[0]; + BUF->destipaddr[0] = BUF->srcipaddr[0]; + BUF->srcipaddr[0] = tmp16; + tmp16 = BUF->destipaddr[1]; + BUF->destipaddr[1] = BUF->srcipaddr[1]; + BUF->srcipaddr[1] = tmp16; + + /* Set our IP address as the source address. */ + BUF->srcipaddr[0] = uip_hostaddr[0]; + BUF->srcipaddr[1] = uip_hostaddr[1]; + + /* The size of the ICMP time exceeded packet is 36 + the size of the + IP header (20) = 56. */ + uip_len = 56; + ICMPBUF->len[0] = 0; + ICMPBUF->len[1] = uip_len; + + /* Fill in the other fields in the IP header. */ + ICMPBUF->vhl = 0x45; + ICMPBUF->tos = 0; + ICMPBUF->ipoffset[0] = ICMPBUF->ipoffset[1] = 0; + ICMPBUF->ttl = UIP_TTL; + ICMPBUF->proto = UIP_PROTO_ICMP; + + /* Calculate IP checksum. */ + ICMPBUF->ipchksum = 0; + ICMPBUF->ipchksum = ~(uip_ipchksum()); + + +} +/*------------------------------------------------------------------------------*/ +/** + * \internal + * Register a packet in the forwarding cache so that it won't be + * forwarded again. + */ +/*------------------------------------------------------------------------------*/ +static void +fwcache_register(void) +{ + struct fwcache_entry *fw; + int i, oldest; + + oldest = FW_TIME; + fw = NULL; + + /* Find the oldest entry in the cache. */ + for(i = 0; i < FWCACHE_SIZE; ++i) { + if(fwcache[i].timer == 0) { + fw = &fwcache[i]; + break; + } else if(fwcache[i].timer <= oldest) { + fw = &fwcache[i]; + oldest = fwcache[i].timer; + } + } + + fw->timer = FW_TIME; + fw->ipid = BUF->ipid; + fw->srcipaddr[0] = BUF->srcipaddr[0]; + fw->srcipaddr[1] = BUF->srcipaddr[1]; + fw->destipaddr[0] = BUF->destipaddr[0]; + fw->destipaddr[1] = BUF->destipaddr[1]; + fw->proto = BUF->proto; +#if notdef + fw->payload[0] = BUF->srcport; + fw->payload[1] = BUF->destport; +#endif +#if UIP_REASSEMBLY > 0 + fw->len = BUF->len; + fw->offset = BUF->ipoffset; +#endif +} +/*------------------------------------------------------------------------------*/ +/** + * \internal + * Find a network interface for the IP packet in uip_buf. + */ +/*------------------------------------------------------------------------------*/ +static struct uip_fw_netif * +find_netif(void) +{ + struct uip_fw_netif *netif; + + /* Walk through every network interface to check for a match. */ + for(netif = netifs; netif != NULL; netif = netif->next) { + if(ipaddr_maskcmp(BUF->destipaddr, netif->ipaddr, + netif->netmask)) { + /* If there was a match, we break the loop. */ + return netif; + } + } + + /* If no matching netif was found, we use default netif. */ + return defaultnetif; +} +/*------------------------------------------------------------------------------*/ +/** + * Output an IP packet on the correct network interface. + * + * The IP packet should be present in the uip_buf buffer and its + * length in the global uip_len variable. + * + * \retval UIP_FW_ZEROLEN Indicates that a zero-length packet + * transmission was attempted and that no packet was sent. + * + * \retval UIP_FW_NOROUTE No suitable network interface could be found + * for the outbound packet, and the packet was not sent. + * + * \return The return value from the actual network interface output + * function is passed unmodified as a return value. + */ +/*------------------------------------------------------------------------------*/ +u8_t +uip_fw_output(void) +{ + struct uip_fw_netif *netif; + + if(uip_len == 0) { + return UIP_FW_ZEROLEN; + } + + fwcache_register(); + +#if UIP_BROADCAST + /* Link local broadcasts go out on all interfaces. */ + if(/*BUF->proto == UIP_PROTO_UDP &&*/ + BUF->destipaddr[0] == 0xffff && + BUF->destipaddr[1] == 0xffff) { + if(defaultnetif != NULL) { + defaultnetif->output(); + } + for(netif = netifs; netif != NULL; netif = netif->next) { + netif->output(); + } + return UIP_FW_OK; + } +#endif /* UIP_BROADCAST */ + + netif = find_netif(); + /* printf("uip_fw_output: netif %p ->output %p len %d\n", netif, + netif->output, + uip_len);*/ + + if(netif == NULL) { + return UIP_FW_NOROUTE; + } + /* If we now have found a suitable network interface, we call its + output function to send out the packet. */ + return netif->output(); +} +/*------------------------------------------------------------------------------*/ +/** + * Forward an IP packet in the uip_buf buffer. + * + * + * + * \return UIP_FW_FORWARDED if the packet was forwarded, UIP_FW_LOCAL if + * the packet should be processed locally. + */ +/*------------------------------------------------------------------------------*/ +u8_t +uip_fw_forward(void) +{ + struct fwcache_entry *fw; + + /* First check if the packet is destined for ourselves and return 0 + to indicate that the packet should be processed locally. */ + if(BUF->destipaddr[0] == uip_hostaddr[0] && + BUF->destipaddr[1] == uip_hostaddr[1]) { + return UIP_FW_LOCAL; + } + + /* If we use ping IP address configuration, and our IP address is + not yet configured, we should intercept all ICMP echo packets. */ +#if UIP_PINGADDRCONF + if((uip_hostaddr[0] | uip_hostaddr[1]) == 0 && + BUF->proto == UIP_PROTO_ICMP && + ICMPBUF->type == ICMP_ECHO) { + return UIP_FW_LOCAL; + } +#endif /* UIP_PINGADDRCONF */ + + /* Check if the packet is in the forwarding cache already, and if so + we drop it. */ + + for(fw = fwcache; fw < &fwcache[FWCACHE_SIZE]; ++fw) { + if(fw->timer != 0 && +#if UIP_REASSEMBLY > 0 + fw->len == BUF->len && + fw->offset == BUF->ipoffset && +#endif + fw->ipid == BUF->ipid && + fw->srcipaddr[0] == BUF->srcipaddr[0] && + fw->srcipaddr[1] == BUF->srcipaddr[1] && + fw->destipaddr[0] == BUF->destipaddr[0] && + fw->destipaddr[1] == BUF->destipaddr[1] && +#if notdef + fw->payload[0] == BUF->srcport && + fw->payload[1] == BUF->destport && +#endif + fw->proto == BUF->proto) { + /* Drop packet. */ + return UIP_FW_FORWARDED; + } + } + + /* If the TTL reaches zero we produce an ICMP time exceeded message + in the uip_buf buffer and forward that packet back to the sender + of the packet. */ + if(BUF->ttl <= 1) { + /* No time exceeded for broadcasts and multicasts! */ + if(BUF->destipaddr[0] == 0xffff && BUF->destipaddr[1] == 0xffff) { + return UIP_FW_LOCAL; + } + time_exceeded(); + } + + /* Decrement the TTL (time-to-live) value in the IP header */ + BUF->ttl = BUF->ttl - 1; + + /* Update the IP checksum. */ + if(BUF->ipchksum >= HTONS(0xffff - 0x0100)) { + BUF->ipchksum = BUF->ipchksum + HTONS(0x0100) + 1; + } else { + BUF->ipchksum = BUF->ipchksum + HTONS(0x0100); + } + + if(uip_len > 0) { + uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]; + uip_fw_output(); + } + +#if UIP_BROADCAST + if(BUF->destipaddr[0] == 0xffff && BUF->destipaddr[1] == 0xffff) { + return UIP_FW_LOCAL; + } +#endif /* UIP_BROADCAST */ + + /* Return non-zero to indicate that the packet was forwarded and that no + other processing should be made. */ + return UIP_FW_FORWARDED; +} +/*------------------------------------------------------------------------------*/ +/** + * Register a network interface with the forwarding module. + * + * \param netif A pointer to the network interface that is to be + * registered. + */ +/*------------------------------------------------------------------------------*/ +void +uip_fw_register(struct uip_fw_netif *netif) +{ + netif->next = netifs; + netifs = netif; +} +/*------------------------------------------------------------------------------*/ +/** + * Register a default network interface. + * + * All packets that don't go out on any of the other interfaces will + * be routed to the default interface. + * + * \param netif A pointer to the network interface that is to be + * registered. + */ +/*------------------------------------------------------------------------------*/ +void +uip_fw_default(struct uip_fw_netif *netif) +{ + defaultnetif = netif; +} +/*------------------------------------------------------------------------------*/ +/** + * Perform periodic processing. + */ +/*------------------------------------------------------------------------------*/ +void +uip_fw_periodic(void) +{ + struct fwcache_entry *fw; + for(fw = fwcache; fw < &fwcache[FWCACHE_SIZE]; ++fw) { + if(fw->timer > 0) { + --fw->timer; + } + } +} +/*------------------------------------------------------------------------------*/ diff --git a/uip/uip/uip-fw.h b/uip/uip/uip-fw.h new file mode 100644 index 0000000..9033850 --- /dev/null +++ b/uip/uip/uip-fw.h @@ -0,0 +1,176 @@ +/** + * \addtogroup uipfw + * @{ + */ + +/** + * \file + * uIP packet forwarding header file. + * \author Adam Dunkels <adam@sics.se> + */ + +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: uip-fw.h,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ +#ifndef __UIP_FW_H__ +#define __UIP_FW_H__ + +#include "uip.h" + +/** + * Representation of a uIP network interface. + */ +struct uip_fw_netif { + struct uip_fw_netif *next; /**< Pointer to the next interface when + linked in a list. */ + u16_t ipaddr[2]; /**< The IP address of this interface. */ + u16_t netmask[2]; /**< The netmask of the interface. */ + u8_t (* output)(void); + /**< A pointer to the function that + sends a packet. */ +}; + +/** + * Intantiating macro for a uIP network interface. + * + * Example: + \code + struct uip_fw_netif slipnetif = + {UIP_FW_NETIF(192,168,76,1, 255,255,255,0, slip_output)}; + \endcode + * \param ip1,ip2,ip3,ip4 The IP address of the network interface. + * + * \param nm1,nm2,nm3,nm4 The netmask of the network interface. + * + * \param outputfunc A pointer to the output function of the network interface. + * + * \hideinitializer + */ +#define UIP_FW_NETIF(ip1,ip2,ip3,ip4, nm1,nm2,nm3,nm4, outputfunc) \ + NULL, \ + {HTONS((ip1 << 8) | ip2), HTONS((ip3 << 8) | ip4)}, \ + {HTONS((nm1 << 8) | nm2), HTONS((nm3 << 8) | nm4)}, \ + outputfunc + +/** + * Set the IP address of a network interface. + * + * \param netif A pointer to the uip_fw_netif structure for the network interface. + * + * \param addr A pointer to an IP address. + * + * \hideinitializer + */ +#define uip_fw_setipaddr(netif, addr) \ + do { (netif)->ipaddr[0] = ((u16_t *)(addr))[0]; \ + (netif)->ipaddr[1] = ((u16_t *)(addr))[1]; } while(0) +/** + * Set the netmask of a network interface. + * + * \param netif A pointer to the uip_fw_netif structure for the network interface. + * + * \param addr A pointer to an IP address representing the netmask. + * + * \hideinitializer + */ +#define uip_fw_setnetmask(netif, addr) \ + do { (netif)->netmask[0] = ((u16_t *)(addr))[0]; \ + (netif)->netmask[1] = ((u16_t *)(addr))[1]; } while(0) + +void uip_fw_init(void); +u8_t uip_fw_forward(void); +u8_t uip_fw_output(void); +void uip_fw_register(struct uip_fw_netif *netif); +void uip_fw_default(struct uip_fw_netif *netif); +void uip_fw_periodic(void); + + +/** + * A non-error message that indicates that a packet should be + * processed locally. + * + * \hideinitializer + */ +#define UIP_FW_LOCAL 0 + +/** + * A non-error message that indicates that something went OK. + * + * \hideinitializer + */ +#define UIP_FW_OK 0 + +/** + * A non-error message that indicates that a packet was forwarded. + * + * \hideinitializer + */ +#define UIP_FW_FORWARDED 1 + +/** + * A non-error message that indicates that a zero-length packet + * transmission was attempted, and that no packet was sent. + * + * \hideinitializer + */ +#define UIP_FW_ZEROLEN 2 + +/** + * An error message that indicates that a packet that was too large + * for the outbound network interface was detected. + * + * \hideinitializer + */ +#define UIP_FW_TOOLARGE 3 + +/** + * An error message that indicates that no suitable interface could be + * found for an outbound packet. + * + * \hideinitializer + */ +#define UIP_FW_NOROUTE 4 + +/** + * An error message that indicates that a packet that should be + * forwarded or output was dropped. + * + * \hideinitializer + */ +#define UIP_FW_DROPPED 5 + + +#endif /* __UIP_FW_H__ */ + +/** @} */ diff --git a/uip/uip/uip-neighbor.c b/uip/uip/uip-neighbor.c new file mode 100644 index 0000000..18a2502 --- /dev/null +++ b/uip/uip/uip-neighbor.c @@ -0,0 +1,159 @@ +/* + * Copyright (c) 2006, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: uip-neighbor.c,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \file + * Database of link-local neighbors, used by IPv6 code and + * to be used by a future ARP code rewrite. + * \author + * Adam Dunkels <adam@sics.se> + */ + +#include "uip-neighbor.h" + +#include <stdio.h> +#include <string.h> + +#define MAX_TIME 128 + +#ifdef UIP_NEIGHBOR_CONF_ENTRIES +#define ENTRIES UIP_NEIGHBOR_CONF_ENTRIES +#else /* UIP_NEIGHBOR_CONF_ENTRIES */ +#define ENTRIES 8 +#endif /* UIP_NEIGHBOR_CONF_ENTRIES */ + +struct neighbor_entry { + uip_ipaddr_t ipaddr; + struct uip_neighbor_addr addr; + u8_t time; +}; +static struct neighbor_entry entries[ENTRIES]; + +/*---------------------------------------------------------------------------*/ +void +uip_neighbor_init(void) +{ + int i; + + for(i = 0; i < ENTRIES; ++i) { + entries[i].time = MAX_TIME; + } +} +/*---------------------------------------------------------------------------*/ +void +uip_neighbor_periodic(void) +{ + int i; + + for(i = 0; i < ENTRIES; ++i) { + if(entries[i].time < MAX_TIME) { + entries[i].time++; + } + } +} +/*---------------------------------------------------------------------------*/ +void +uip_neighbor_add(uip_ipaddr_t ipaddr, struct uip_neighbor_addr *addr) +{ + int i, oldest; + u8_t oldest_time; + + printf("Adding neighbor with link address %02x:%02x:%02x:%02x:%02x:%02x\n", + addr->addr.addr[0], addr->addr.addr[1], addr->addr.addr[2], addr->addr.addr[3], + addr->addr.addr[4], addr->addr.addr[5]); + + /* Find the first unused entry or the oldest used entry. */ + oldest_time = 0; + oldest = 0; + for(i = 0; i < ENTRIES; ++i) { + if(entries[i].time == MAX_TIME) { + oldest = i; + break; + } + if(uip_ipaddr_cmp(entries[i].ipaddr, addr)) { + oldest = i; + break; + } + if(entries[i].time > oldest_time) { + oldest = i; + oldest_time = entries[i].time; + } + } + + /* Use the oldest or first free entry (either pointed to by the + "oldest" variable). */ + entries[oldest].time = 0; + uip_ipaddr_copy(entries[oldest].ipaddr, ipaddr); + memcpy(&entries[oldest].addr, addr, sizeof(struct uip_neighbor_addr)); +} +/*---------------------------------------------------------------------------*/ +static struct neighbor_entry * +find_entry(uip_ipaddr_t ipaddr) +{ + int i; + + for(i = 0; i < ENTRIES; ++i) { + if(uip_ipaddr_cmp(entries[i].ipaddr, ipaddr)) { + return &entries[i]; + } + } + return NULL; +} +/*---------------------------------------------------------------------------*/ +void +uip_neighbor_update(uip_ipaddr_t ipaddr) +{ + struct neighbor_entry *e; + + e = find_entry(ipaddr); + if(e != NULL) { + e->time = 0; + } +} +/*---------------------------------------------------------------------------*/ +struct uip_neighbor_addr * +uip_neighbor_lookup(uip_ipaddr_t ipaddr) +{ + struct neighbor_entry *e; + + e = find_entry(ipaddr); + if(e != NULL) { + /* printf("Lookup neighbor with link address %02x:%02x:%02x:%02x:%02x:%02x\n", + e->addr.addr.addr[0], e->addr.addr.addr[1], e->addr.addr.addr[2], e->addr.addr.addr[3], + e->addr.addr.addr[4], e->addr.addr.addr[5]);*/ + + return &e->addr; + } + return NULL; +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/uip/uip-neighbor.h b/uip/uip/uip-neighbor.h new file mode 100644 index 0000000..d3b351c --- /dev/null +++ b/uip/uip/uip-neighbor.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2006, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: uip-neighbor.h,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \file + * Header file for database of link-local neighbors, used by + * IPv6 code and to be used by future ARP code. + * \author + * Adam Dunkels <adam@sics.se> + */ + +#ifndef __UIP_NEIGHBOR_H__ +#define __UIP_NEIGHBOR_H__ + +#include "uip.h" + +struct uip_neighbor_addr { +#if UIP_NEIGHBOR_CONF_ADDRTYPE + UIP_NEIGHBOR_CONF_ADDRTYPE addr; +#else + struct uip_eth_addr addr; +#endif +}; + +void uip_neighbor_init(void); +void uip_neighbor_add(uip_ipaddr_t ipaddr, struct uip_neighbor_addr *addr); +void uip_neighbor_update(uip_ipaddr_t ipaddr); +struct uip_neighbor_addr *uip_neighbor_lookup(uip_ipaddr_t ipaddr); +void uip_neighbor_periodic(void); + +#endif /* __UIP-NEIGHBOR_H__ */ diff --git a/uip/uip/uip-split.c b/uip/uip/uip-split.c new file mode 100644 index 0000000..a910ee6 --- /dev/null +++ b/uip/uip/uip-split.c @@ -0,0 +1,136 @@ +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: uip-split.c,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +#include <string.h> + +#include "uip-split.h" +#include "uip.h" +#include "uip-fw.h" +#include "uip_arch.h" + + + +#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN]) + +/*-----------------------------------------------------------------------------*/ +void +uip_split_output(void) +{ + u16_t tcplen, len1, len2; + + /* We only try to split maximum sized TCP segments. */ + if(BUF->proto == UIP_PROTO_TCP && + uip_len == UIP_BUFSIZE - UIP_LLH_LEN) { + + tcplen = uip_len - UIP_TCPIP_HLEN; + /* Split the segment in two. If the original packet length was + odd, we make the second packet one byte larger. */ + len1 = len2 = tcplen / 2; + if(len1 + len2 < tcplen) { + ++len2; + } + + /* Create the first packet. This is done by altering the length + field of the IP header and updating the checksums. */ + uip_len = len1 + UIP_TCPIP_HLEN; +#if UIP_CONF_IPV6 + /* For IPv6, the IP length field does not include the IPv6 IP header + length. */ + BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8); + BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff); +#else /* UIP_CONF_IPV6 */ + BUF->len[0] = uip_len >> 8; + BUF->len[1] = uip_len & 0xff; +#endif /* UIP_CONF_IPV6 */ + + /* Recalculate the TCP checksum. */ + BUF->tcpchksum = 0; + BUF->tcpchksum = ~(uip_tcpchksum()); + +#if !UIP_CONF_IPV6 + /* Recalculate the IP checksum. */ + BUF->ipchksum = 0; + BUF->ipchksum = ~(uip_ipchksum()); +#endif /* UIP_CONF_IPV6 */ + + /* Transmit the first packet. */ + /* uip_fw_output();*/ + tcpip_output(); + + /* Now, create the second packet. To do this, it is not enough to + just alter the length field, but we must also update the TCP + sequence number and point the uip_appdata to a new place in + memory. This place is detemined by the length of the first + packet (len1). */ + uip_len = len2 + UIP_TCPIP_HLEN; +#if UIP_CONF_IPV6 + /* For IPv6, the IP length field does not include the IPv6 IP header + length. */ + BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8); + BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff); +#else /* UIP_CONF_IPV6 */ + BUF->len[0] = uip_len >> 8; + BUF->len[1] = uip_len & 0xff; +#endif /* UIP_CONF_IPV6 */ + + /* uip_appdata += len1;*/ + memcpy(uip_appdata, (u8_t *)uip_appdata + len1, len2); + + uip_add32(BUF->seqno, len1); + BUF->seqno[0] = uip_acc32[0]; + BUF->seqno[1] = uip_acc32[1]; + BUF->seqno[2] = uip_acc32[2]; + BUF->seqno[3] = uip_acc32[3]; + + /* Recalculate the TCP checksum. */ + BUF->tcpchksum = 0; + BUF->tcpchksum = ~(uip_tcpchksum()); + +#if !UIP_CONF_IPV6 + /* Recalculate the IP checksum. */ + BUF->ipchksum = 0; + BUF->ipchksum = ~(uip_ipchksum()); +#endif /* UIP_CONF_IPV6 */ + + /* Transmit the second packet. */ + /* uip_fw_output();*/ + tcpip_output(); + } else { + /* uip_fw_output();*/ + tcpip_output(); + } + +} +/*-----------------------------------------------------------------------------*/ diff --git a/uip/uip/uip-split.h b/uip/uip/uip-split.h new file mode 100644 index 0000000..c2c1789 --- /dev/null +++ b/uip/uip/uip-split.h @@ -0,0 +1,96 @@ +/* + * Copyright (c) 2004, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: uip-split.h,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ +/** + * \addtogroup uip + * @{ + */ + +/** + * \defgroup uipsplit uIP TCP throughput booster hack + * @{ + * + * The basic uIP TCP implementation only allows each TCP connection to + * have a single TCP segment in flight at any given time. Because of + * the delayed ACK algorithm employed by most TCP receivers, uIP's + * limit on the amount of in-flight TCP segments seriously reduces the + * maximum achievable throughput for sending data from uIP. + * + * The uip-split module is a hack which tries to remedy this + * situation. By splitting maximum sized outgoing TCP segments into + * two, the delayed ACK algorithm is not invoked at TCP + * receivers. This improves the throughput when sending data from uIP + * by orders of magnitude. + * + * The uip-split module uses the uip-fw module (uIP IP packet + * forwarding) for sending packets. Therefore, the uip-fw module must + * be set up with the appropriate network interfaces for this module + * to work. + */ + + +/** + * \file + * Module for splitting outbound TCP segments in two to avoid the + * delayed ACK throughput degradation. + * \author + * Adam Dunkels <adam@sics.se> + * + */ + +#ifndef __UIP_SPLIT_H__ +#define __UIP_SPLIT_H__ + +/** + * Handle outgoing packets. + * + * This function inspects an outgoing packet in the uip_buf buffer and + * sends it out using the uip_fw_output() function. If the packet is a + * full-sized TCP segment it will be split into two segments and + * transmitted separately. This function should be called instead of + * the actual device driver output function, or the uip_fw_output() + * function. + * + * The headers of the outgoing packet is assumed to be in the uip_buf + * buffer and the payload is assumed to be wherever uip_appdata + * points. The length of the outgoing packet is assumed to be in the + * uip_len variable. + * + */ +void uip_split_output(void); + +#endif /* __UIP_SPLIT_H__ */ + +/** @} */ +/** @} */ diff --git a/uip/uip/uip.c b/uip/uip/uip.c new file mode 100644 index 0000000..c5f7b93 --- /dev/null +++ b/uip/uip/uip.c @@ -0,0 +1,1912 @@ +#define DEBUG_PRINTF(...) /*printf(__VA_ARGS__)*/ + +/** + * \defgroup uip The uIP TCP/IP stack + * @{ + * + * uIP is an implementation of the TCP/IP protocol stack intended for + * small 8-bit and 16-bit microcontrollers. + * + * uIP provides the necessary protocols for Internet communication, + * with a very small code footprint and RAM requirements - the uIP + * code size is on the order of a few kilobytes and RAM usage is on + * the order of a few hundred bytes. + */ + +/** + * \file + * The uIP TCP/IP stack code. + * \author Adam Dunkels <adam@dunkels.com> + */ + +/* + * Copyright (c) 2001-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: uip.c,v 1.65 2006/06/11 21:46:39 adam Exp $ + * + */ + +/* + * uIP is a small implementation of the IP, UDP and TCP protocols (as + * well as some basic ICMP stuff). The implementation couples the IP, + * UDP, TCP and the application layers very tightly. To keep the size + * of the compiled code down, this code frequently uses the goto + * statement. While it would be possible to break the uip_process() + * function into many smaller functions, this would increase the code + * size because of the overhead of parameter passing and the fact that + * the optimier would not be as efficient. + * + * The principle is that we have a small buffer, called the uip_buf, + * in which the device driver puts an incoming packet. The TCP/IP + * stack parses the headers in the packet, and calls the + * application. If the remote host has sent data to the application, + * this data is present in the uip_buf and the application read the + * data from there. It is up to the application to put this data into + * a byte stream if needed. The application will not be fed with data + * that is out of sequence. + * + * If the application whishes to send data to the peer, it should put + * its data into the uip_buf. The uip_appdata pointer points to the + * first available byte. The TCP/IP stack will calculate the + * checksums, and fill in the necessary header fields and finally send + * the packet back to the peer. +*/ + +#include "uip.h" +#include "uipopt.h" +#include "uip_arch.h" + +#if UIP_CONF_IPV6 +#include "uip-neighbor.h" +#endif /* UIP_CONF_IPV6 */ + +#include <string.h> + +/*---------------------------------------------------------------------------*/ +/* Variable definitions. */ + + +/* The IP address of this host. If it is defined to be fixed (by + setting UIP_FIXEDADDR to 1 in uipopt.h), the address is set + here. Otherwise, the address */ +#if UIP_FIXEDADDR > 0 +const uip_ipaddr_t uip_hostaddr = + {HTONS((UIP_IPADDR0 << 8) | UIP_IPADDR1), + HTONS((UIP_IPADDR2 << 8) | UIP_IPADDR3)}; +const uip_ipaddr_t uip_draddr = + {HTONS((UIP_DRIPADDR0 << 8) | UIP_DRIPADDR1), + HTONS((UIP_DRIPADDR2 << 8) | UIP_DRIPADDR3)}; +const uip_ipaddr_t uip_netmask = + {HTONS((UIP_NETMASK0 << 8) | UIP_NETMASK1), + HTONS((UIP_NETMASK2 << 8) | UIP_NETMASK3)}; +#else +uip_ipaddr_t uip_hostaddr, uip_draddr, uip_netmask; +#endif /* UIP_FIXEDADDR */ + +static const uip_ipaddr_t all_ones_addr = +#if UIP_CONF_IPV6 + {0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff}; +#else /* UIP_CONF_IPV6 */ + {0xffff,0xffff}; +#endif /* UIP_CONF_IPV6 */ +static const uip_ipaddr_t all_zeroes_addr = +#if UIP_CONF_IPV6 + {0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000}; +#else /* UIP_CONF_IPV6 */ + {0x0000,0x0000}; +#endif /* UIP_CONF_IPV6 */ + + +#if UIP_CONF_IPV6 +#if UIP_FIXEDETHADDR +const struct uip_eth_addr uip_ethaddr = {{UIP_ETHADDR0, + UIP_ETHADDR1, + UIP_ETHADDR2, + UIP_ETHADDR3, + UIP_ETHADDR4, + UIP_ETHADDR5}}; +#else +struct uip_eth_addr uip_ethaddr = {{0,0,0,0,0,0}}; +#endif +#endif /* UIP_CONF_IPV6 */ + +#ifndef UIP_CONF_EXTERNAL_BUFFER +u8_t uip_buf[UIP_BUFSIZE + 2]; /* The packet buffer that contains + incoming packets. */ +#endif /* UIP_CONF_EXTERNAL_BUFFER */ + +void *uip_appdata; /* The uip_appdata pointer points to + application data. */ +void *uip_sappdata; /* The uip_appdata pointer points to + the application data which is to + be sent. */ +#if UIP_URGDATA > 0 +void *uip_urgdata; /* The uip_urgdata pointer points to + urgent data (out-of-band data), if + present. */ +u16_t uip_urglen, uip_surglen; +#endif /* UIP_URGDATA > 0 */ + +u16_t uip_len, uip_slen; + /* The uip_len is either 8 or 16 bits, + depending on the maximum packet + size. */ + +u8_t uip_flags; /* The uip_flags variable is used for + communication between the TCP/IP stack + and the application program. */ +struct uip_conn *uip_conn; /* uip_conn always points to the current + connection. */ + +struct uip_conn uip_conns[UIP_CONNS]; + /* The uip_conns array holds all TCP + connections. */ + +#ifdef UIP_TCP_LISTEN +u16_t uip_listenports[UIP_LISTENPORTS]; + /* The uip_listenports list all currently + listning ports. */ +#endif + +#if UIP_UDP +struct uip_udp_conn *uip_udp_conn; +struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS]; +#endif /* UIP_UDP */ + +static u16_t ipid; /* Ths ipid variable is an increasing + number that is used for the IP ID + field. */ + +void uip_setipid(u16_t id) { ipid = id; } + +static u8_t iss[4]; /* The iss variable is used for the TCP + initial sequence number. */ + +#if UIP_ACTIVE_OPEN +static u16_t lastport; /* Keeps track of the last port used for + a new connection. */ +#endif /* UIP_ACTIVE_OPEN */ + +/* Temporary variables. */ +u8_t uip_acc32[4]; +static u8_t c, opt; +static u16_t tmp16; + +/* Structures and definitions. */ +#define TCP_FIN 0x01 +#define TCP_SYN 0x02 +#define TCP_RST 0x04 +#define TCP_PSH 0x08 +#define TCP_ACK 0x10 +#define TCP_URG 0x20 +#define TCP_CTL 0x3f + +#define TCP_OPT_END 0 /* End of TCP options list */ +#define TCP_OPT_NOOP 1 /* "No-operation" TCP option */ +#define TCP_OPT_MSS 2 /* Maximum segment size TCP option */ + +#define TCP_OPT_MSS_LEN 4 /* Length of TCP MSS option. */ + +#define ICMP_ECHO_REPLY 0 +#define ICMP_ECHO 8 + +#define ICMP6_ECHO_REPLY 129 +#define ICMP6_ECHO 128 +#define ICMP6_NEIGHBOR_SOLICITATION 135 +#define ICMP6_NEIGHBOR_ADVERTISEMENT 136 + +#define ICMP6_FLAG_S (1 << 6) + +#define ICMP6_OPTION_SOURCE_LINK_ADDRESS 1 +#define ICMP6_OPTION_TARGET_LINK_ADDRESS 2 + + +/* Macros. */ +#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN]) +#define FBUF ((struct uip_tcpip_hdr *)&uip_reassbuf[0]) +#define ICMPBUF ((struct uip_icmpip_hdr *)&uip_buf[UIP_LLH_LEN]) +#define UDPBUF ((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN]) + + +#if UIP_STATISTICS == 1 +struct uip_stats uip_stat; +#define UIP_STAT(s) s +#else +#define UIP_STAT(s) +#endif /* UIP_STATISTICS == 1 */ + +#if UIP_LOGGING == 1 +#include <stdio.h> +void uip_log(char *msg); +#define UIP_LOG(m) uip_log(m) +#else +#define UIP_LOG(m) +#endif /* UIP_LOGGING == 1 */ + +#if ! UIP_ARCH_ADD32 +void +uip_add32(u8_t *op32, u16_t op16) +{ + uip_acc32[3] = op32[3] + (op16 & 0xff); + uip_acc32[2] = op32[2] + (op16 >> 8); + uip_acc32[1] = op32[1]; + uip_acc32[0] = op32[0]; + + if(uip_acc32[2] < (op16 >> 8)) { + ++uip_acc32[1]; + if(uip_acc32[1] == 0) { + ++uip_acc32[0]; + } + } + + + if(uip_acc32[3] < (op16 & 0xff)) { + ++uip_acc32[2]; + if(uip_acc32[2] == 0) { + ++uip_acc32[1]; + if(uip_acc32[1] == 0) { + ++uip_acc32[0]; + } + } + } +} + +#endif /* UIP_ARCH_ADD32 */ + +#if ! UIP_ARCH_CHKSUM +/*---------------------------------------------------------------------------*/ +static u16_t +chksum(u16_t sum, const u8_t *data, u16_t len) +{ + u16_t t; + const u8_t *dataptr; + const u8_t *last_byte; + + dataptr = data; + last_byte = data + len - 1; + + while(dataptr < last_byte) { /* At least two more bytes */ + t = (dataptr[0] << 8) + dataptr[1]; + sum += t; + if(sum < t) { + sum++; /* carry */ + } + dataptr += 2; + } + + if(dataptr == last_byte) { + t = (dataptr[0] << 8) + 0; + sum += t; + if(sum < t) { + sum++; /* carry */ + } + } + + /* Return sum in host byte order. */ + return sum; +} +/*---------------------------------------------------------------------------*/ +u16_t +uip_chksum(u16_t *data, u16_t len) +{ + return htons(chksum(0, (u8_t *)data, len)); +} +/*---------------------------------------------------------------------------*/ +#ifndef UIP_ARCH_IPCHKSUM +u16_t +uip_ipchksum(void) +{ + u16_t sum; + + sum = chksum(0, &uip_buf[UIP_LLH_LEN], UIP_IPH_LEN); + DEBUG_PRINTF("uip_ipchksum: sum 0x%04x\n", sum); + return (sum == 0) ? 0xffff : htons(sum); +} +#endif +/*---------------------------------------------------------------------------*/ +static u16_t +upper_layer_chksum(u8_t proto) +{ + u16_t upper_layer_len; + u16_t sum; + +#if UIP_CONF_IPV6 + upper_layer_len = (((u16_t)(BUF->len[0]) << 8) + BUF->len[1]); +#else /* UIP_CONF_IPV6 */ + upper_layer_len = (((u16_t)(BUF->len[0]) << 8) + BUF->len[1]) - UIP_IPH_LEN; +#endif /* UIP_CONF_IPV6 */ + + /* First sum pseudoheader. */ + + /* IP protocol and length fields. This addition cannot carry. */ + sum = upper_layer_len + proto; + /* Sum IP source and destination addresses. */ + sum = chksum(sum, (u8_t *)&BUF->srcipaddr[0], 2 * sizeof(uip_ipaddr_t)); + + /* Sum TCP header and data. */ + sum = chksum(sum, &uip_buf[UIP_IPH_LEN + UIP_LLH_LEN], + upper_layer_len); + + return (sum == 0) ? 0xffff : htons(sum); +} +/*---------------------------------------------------------------------------*/ +#if UIP_CONF_IPV6 +u16_t +uip_icmp6chksum(void) +{ + return upper_layer_chksum(UIP_PROTO_ICMP6); + +} +#endif /* UIP_CONF_IPV6 */ +/*---------------------------------------------------------------------------*/ +u16_t +uip_tcpchksum(void) +{ + return upper_layer_chksum(UIP_PROTO_TCP); +} +/*---------------------------------------------------------------------------*/ +#if UIP_UDP_CHECKSUMS +u16_t +uip_udpchksum(void) +{ + return upper_layer_chksum(UIP_PROTO_UDP); +} +#endif /* UIP_UDP_CHECKSUMS */ +#endif /* UIP_ARCH_CHKSUM */ +/*---------------------------------------------------------------------------*/ +void +uip_init(void) +{ +#ifdef UIP_TCP_LISTEN + for(c = 0; c < UIP_LISTENPORTS; ++c) { + uip_listenports[c] = 0; + } +#endif + for(c = 0; c < UIP_CONNS; ++c) { + uip_conns[c].tcpstateflags = UIP_CLOSED; + } +#if UIP_ACTIVE_OPEN + lastport = 1024; +#endif /* UIP_ACTIVE_OPEN */ + +#if UIP_UDP + for(c = 0; c < UIP_UDP_CONNS; ++c) { + uip_udp_conns[c].lport = 0; + } +#endif /* UIP_UDP */ + + + /* IPv4 initialization. */ +#if UIP_FIXEDADDR == 0 + /* uip_hostaddr[0] = uip_hostaddr[1] = 0;*/ +#endif /* UIP_FIXEDADDR */ + +} +/*---------------------------------------------------------------------------*/ +#if UIP_ACTIVE_OPEN +struct uip_conn * +uip_connect(uip_ipaddr_t *ripaddr, u16_t rport) +{ + register struct uip_conn *conn, *cconn; + + /* Find an unused local port. */ + again: + ++lastport; + + if(lastport >= 32000) { + lastport = 4096; + } + + /* Check if this port is already in use, and if so try to find + another one. */ + for(c = 0; c < UIP_CONNS; ++c) { + conn = &uip_conns[c]; + if(conn->tcpstateflags != UIP_CLOSED && + conn->lport == htons(lastport)) { + goto again; + } + } + + conn = 0; + for(c = 0; c < UIP_CONNS; ++c) { + cconn = &uip_conns[c]; + if(cconn->tcpstateflags == UIP_CLOSED) { + conn = cconn; + break; + } + if(cconn->tcpstateflags == UIP_TIME_WAIT) { + if(conn == 0 || + cconn->timer > conn->timer) { + conn = cconn; + } + } + } + + if(conn == 0) { + return 0; + } + + conn->tcpstateflags = UIP_SYN_SENT; + + conn->snd_nxt[0] = iss[0]; + conn->snd_nxt[1] = iss[1]; + conn->snd_nxt[2] = iss[2]; + conn->snd_nxt[3] = iss[3]; + + conn->initialmss = conn->mss = UIP_TCP_MSS; + + conn->len = 1; /* TCP length of the SYN is one. */ + conn->nrtx = 0; + conn->timer = 1; /* Send the SYN next time around. */ + conn->rto = UIP_RTO; + conn->sa = 0; + conn->sv = 16; /* Initial value of the RTT variance. */ + conn->lport = htons(lastport); + conn->rport = rport; + uip_ipaddr_copy(&conn->ripaddr, ripaddr); + + return conn; +} +#endif /* UIP_ACTIVE_OPEN */ +/*---------------------------------------------------------------------------*/ +#if UIP_UDP +struct uip_udp_conn * +uip_udp_new(uip_ipaddr_t *ripaddr, u16_t rport) +{ + register struct uip_udp_conn *conn; + + /* Find an unused local port. */ + again: + ++lastport; + + if(lastport >= 32000) { + lastport = 4096; + } + + for(c = 0; c < UIP_UDP_CONNS; ++c) { + if(uip_udp_conns[c].lport == htons(lastport)) { + goto again; + } + } + + + conn = 0; + for(c = 0; c < UIP_UDP_CONNS; ++c) { + if(uip_udp_conns[c].lport == 0) { + conn = &uip_udp_conns[c]; + break; + } + } + + if(conn == 0) { + return 0; + } + + conn->lport = HTONS(lastport); + conn->rport = rport; + if(ripaddr == NULL) { + memset(conn->ripaddr, 0, sizeof(uip_ipaddr_t)); + } else { + uip_ipaddr_copy(&conn->ripaddr, ripaddr); + } + conn->ttl = UIP_TTL; + + return conn; +} +#endif /* UIP_UDP */ +/*---------------------------------------------------------------------------*/ +#ifdef UIP_TCP_LISTEN +void +uip_unlisten(u16_t port) +{ + for(c = 0; c < UIP_LISTENPORTS; ++c) { + if(uip_listenports[c] == port) { + uip_listenports[c] = 0; + return; + } + } +} +/*---------------------------------------------------------------------------*/ +void +uip_listen(u16_t port) +{ + for(c = 0; c < UIP_LISTENPORTS; ++c) { + if(uip_listenports[c] == 0) { + uip_listenports[c] = port; + return; + } + } +} +#endif +/*---------------------------------------------------------------------------*/ +/* XXX: IP fragment reassembly: not well-tested. */ + +#if UIP_REASSEMBLY && !UIP_CONF_IPV6 +#define UIP_REASS_BUFSIZE (UIP_BUFSIZE - UIP_LLH_LEN) +static u8_t uip_reassbuf[UIP_REASS_BUFSIZE]; +static u8_t uip_reassbitmap[UIP_REASS_BUFSIZE / (8 * 8)]; +static const u8_t bitmap_bits[8] = {0xff, 0x7f, 0x3f, 0x1f, + 0x0f, 0x07, 0x03, 0x01}; +static u16_t uip_reasslen; +static u8_t uip_reassflags; +#define UIP_REASS_FLAG_LASTFRAG 0x01 +static u8_t uip_reasstmr; + +#define IP_MF 0x20 + +static u8_t +uip_reass(void) +{ + u16_t offset, len; + u16_t i; + + /* If ip_reasstmr is zero, no packet is present in the buffer, so we + write the IP header of the fragment into the reassembly + buffer. The timer is updated with the maximum age. */ + if(uip_reasstmr == 0) { + memcpy(uip_reassbuf, &BUF->vhl, UIP_IPH_LEN); + uip_reasstmr = UIP_REASS_MAXAGE; + uip_reassflags = 0; + /* Clear the bitmap. */ + memset(uip_reassbitmap, 0, sizeof(uip_reassbitmap)); + } + + /* Check if the incoming fragment matches the one currently present + in the reasembly buffer. If so, we proceed with copying the + fragment into the buffer. */ + if(BUF->srcipaddr[0] == FBUF->srcipaddr[0] && + BUF->srcipaddr[1] == FBUF->srcipaddr[1] && + BUF->destipaddr[0] == FBUF->destipaddr[0] && + BUF->destipaddr[1] == FBUF->destipaddr[1] && + BUF->ipid[0] == FBUF->ipid[0] && + BUF->ipid[1] == FBUF->ipid[1]) { + + len = (BUF->len[0] << 8) + BUF->len[1] - (BUF->vhl & 0x0f) * 4; + offset = (((BUF->ipoffset[0] & 0x3f) << 8) + BUF->ipoffset[1]) * 8; + + /* If the offset or the offset + fragment length overflows the + reassembly buffer, we discard the entire packet. */ + if(offset > UIP_REASS_BUFSIZE || + offset + len > UIP_REASS_BUFSIZE) { + uip_reasstmr = 0; + goto nullreturn; + } + + /* Copy the fragment into the reassembly buffer, at the right + offset. */ + memcpy(&uip_reassbuf[UIP_IPH_LEN + offset], + (char *)BUF + (int)((BUF->vhl & 0x0f) * 4), + len); + + /* Update the bitmap. */ + if(offset / (8 * 8) == (offset + len) / (8 * 8)) { + /* If the two endpoints are in the same byte, we only update + that byte. */ + + uip_reassbitmap[offset / (8 * 8)] |= + bitmap_bits[(offset / 8 ) & 7] & + ~bitmap_bits[((offset + len) / 8 ) & 7]; + } else { + /* If the two endpoints are in different bytes, we update the + bytes in the endpoints and fill the stuff inbetween with + 0xff. */ + uip_reassbitmap[offset / (8 * 8)] |= + bitmap_bits[(offset / 8 ) & 7]; + for(i = 1 + offset / (8 * 8); i < (offset + len) / (8 * 8); ++i) { + uip_reassbitmap[i] = 0xff; + } + uip_reassbitmap[(offset + len) / (8 * 8)] |= + ~bitmap_bits[((offset + len) / 8 ) & 7]; + } + + /* If this fragment has the More Fragments flag set to zero, we + know that this is the last fragment, so we can calculate the + size of the entire packet. We also set the + IP_REASS_FLAG_LASTFRAG flag to indicate that we have received + the final fragment. */ + + if((BUF->ipoffset[0] & IP_MF) == 0) { + uip_reassflags |= UIP_REASS_FLAG_LASTFRAG; + uip_reasslen = offset + len; + } + + /* Finally, we check if we have a full packet in the buffer. We do + this by checking if we have the last fragment and if all bits + in the bitmap are set. */ + if(uip_reassflags & UIP_REASS_FLAG_LASTFRAG) { + /* Check all bytes up to and including all but the last byte in + the bitmap. */ + for(i = 0; i < uip_reasslen / (8 * 8) - 1; ++i) { + if(uip_reassbitmap[i] != 0xff) { + goto nullreturn; + } + } + /* Check the last byte in the bitmap. It should contain just the + right amount of bits. */ + if(uip_reassbitmap[uip_reasslen / (8 * 8)] != + (u8_t)~bitmap_bits[uip_reasslen / 8 & 7]) { + goto nullreturn; + } + + /* If we have come this far, we have a full packet in the + buffer, so we allocate a pbuf and copy the packet into it. We + also reset the timer. */ + uip_reasstmr = 0; + memcpy(BUF, FBUF, uip_reasslen); + + /* Pretend to be a "normal" (i.e., not fragmented) IP packet + from now on. */ + BUF->ipoffset[0] = BUF->ipoffset[1] = 0; + BUF->len[0] = uip_reasslen >> 8; + BUF->len[1] = uip_reasslen & 0xff; + BUF->ipchksum = 0; + BUF->ipchksum = ~(uip_ipchksum()); + + return uip_reasslen; + } + } + + nullreturn: + return 0; +} +#endif /* UIP_REASSEMBLY */ +/*---------------------------------------------------------------------------*/ +static void +uip_add_rcv_nxt(u16_t n) +{ + uip_add32(uip_conn->rcv_nxt, n); + uip_conn->rcv_nxt[0] = uip_acc32[0]; + uip_conn->rcv_nxt[1] = uip_acc32[1]; + uip_conn->rcv_nxt[2] = uip_acc32[2]; + uip_conn->rcv_nxt[3] = uip_acc32[3]; +} +/*---------------------------------------------------------------------------*/ +void +uip_process(u8_t flag) +{ + register struct uip_conn *uip_connr = uip_conn; + +#if UIP_UDP + if(flag == UIP_UDP_SEND_CONN) { + goto udp_send; + } +#endif /* UIP_UDP */ + + uip_sappdata = uip_appdata = &uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN]; + + /* Check if we were invoked because of a poll request for a + particular connection. */ + if(flag == UIP_POLL_REQUEST) { + if((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_ESTABLISHED && + !uip_outstanding(uip_connr)) { + uip_flags = UIP_POLL; + UIP_APPCALL(); + goto appsend; + } + goto drop; + + /* Check if we were invoked because of the perodic timer fireing. */ + } else if(flag == UIP_TIMER) { +#if UIP_REASSEMBLY + if(uip_reasstmr != 0) { + --uip_reasstmr; + } +#endif /* UIP_REASSEMBLY */ + /* Increase the initial sequence number. */ + if(++iss[3] == 0) { + if(++iss[2] == 0) { + if(++iss[1] == 0) { + ++iss[0]; + } + } + } + + /* Reset the length variables. */ + uip_len = 0; + uip_slen = 0; + + /* Check if the connection is in a state in which we simply wait + for the connection to time out. If so, we increase the + connection's timer and remove the connection if it times + out. */ + if(uip_connr->tcpstateflags == UIP_TIME_WAIT || + uip_connr->tcpstateflags == UIP_FIN_WAIT_2) { + ++(uip_connr->timer); + if(uip_connr->timer == UIP_TIME_WAIT_TIMEOUT) { + uip_connr->tcpstateflags = UIP_CLOSED; + } + } else if(uip_connr->tcpstateflags != UIP_CLOSED) { + /* If the connection has outstanding data, we increase the + connection's timer and see if it has reached the RTO value + in which case we retransmit. */ + if(uip_outstanding(uip_connr)) { + if(uip_connr->timer-- == 0) { + if(uip_connr->nrtx == UIP_MAXRTX || + ((uip_connr->tcpstateflags == UIP_SYN_SENT || + uip_connr->tcpstateflags == UIP_SYN_RCVD) && + uip_connr->nrtx == UIP_MAXSYNRTX)) { + uip_connr->tcpstateflags = UIP_CLOSED; + + /* We call UIP_APPCALL() with uip_flags set to + UIP_TIMEDOUT to inform the application that the + connection has timed out. */ + uip_flags = UIP_TIMEDOUT; + UIP_APPCALL(); + + /* We also send a reset packet to the remote host. */ + BUF->flags = TCP_RST | TCP_ACK; + goto tcp_send_nodata; + } + + /* Exponential backoff. */ + uip_connr->timer = UIP_RTO << (uip_connr->nrtx > 4? + 4: + uip_connr->nrtx); + ++(uip_connr->nrtx); + + /* Ok, so we need to retransmit. We do this differently + depending on which state we are in. In ESTABLISHED, we + call upon the application so that it may prepare the + data for the retransmit. In SYN_RCVD, we resend the + SYNACK that we sent earlier and in LAST_ACK we have to + retransmit our FINACK. */ + UIP_STAT(++uip_stat.tcp.rexmit); + switch(uip_connr->tcpstateflags & UIP_TS_MASK) { + case UIP_SYN_RCVD: + /* In the SYN_RCVD state, we should retransmit our + SYNACK. */ + goto tcp_send_synack; + +#if UIP_ACTIVE_OPEN + case UIP_SYN_SENT: + /* In the SYN_SENT state, we retransmit out SYN. */ + BUF->flags = 0; + goto tcp_send_syn; +#endif /* UIP_ACTIVE_OPEN */ + + case UIP_ESTABLISHED: + /* In the ESTABLISHED state, we call upon the application + to do the actual retransmit after which we jump into + the code for sending out the packet (the apprexmit + label). */ + uip_flags = UIP_REXMIT; + UIP_APPCALL(); + goto apprexmit; + + case UIP_FIN_WAIT_1: + case UIP_CLOSING: + case UIP_LAST_ACK: + /* In all these states we should retransmit a FINACK. */ + goto tcp_send_finack; + + } + } + } else if((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_ESTABLISHED) { + /* If there was no need for a retransmission, we poll the + application for new data. */ + uip_flags = UIP_POLL; + UIP_APPCALL(); + goto appsend; + } + } + goto drop; + } +#if UIP_UDP + if(flag == UIP_UDP_TIMER) { + if(uip_udp_conn->lport != 0) { + uip_conn = NULL; + uip_sappdata = uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN]; + uip_len = uip_slen = 0; + uip_flags = UIP_POLL; + UIP_UDP_APPCALL(); + goto udp_send; + } else { + goto drop; + } + } +#endif + + /* This is where the input processing starts. */ + UIP_STAT(++uip_stat.ip.recv); + + /* Start of IP input header processing code. */ + +#if UIP_CONF_IPV6 + /* Check validity of the IP header. */ + if((BUF->vtc & 0xf0) != 0x60) { /* IP version and header length. */ + UIP_STAT(++uip_stat.ip.drop); + UIP_STAT(++uip_stat.ip.vhlerr); + UIP_LOG("ipv6: invalid version."); + goto drop; + } +#else /* UIP_CONF_IPV6 */ + /* Check validity of the IP header. */ + if(BUF->vhl != 0x45) { /* IP version and header length. */ + UIP_STAT(++uip_stat.ip.drop); + UIP_STAT(++uip_stat.ip.vhlerr); + UIP_LOG("ip: invalid version or header length."); + goto drop; + } +#endif /* UIP_CONF_IPV6 */ + + /* Check the size of the packet. If the size reported to us in + uip_len is smaller the size reported in the IP header, we assume + that the packet has been corrupted in transit. If the size of + uip_len is larger than the size reported in the IP packet header, + the packet has been padded and we set uip_len to the correct + value.. */ + + if((BUF->len[0] << 8) + BUF->len[1] <= uip_len) { + uip_len = (BUF->len[0] << 8) + BUF->len[1]; +#if UIP_CONF_IPV6 + uip_len += 40; /* The length reported in the IPv6 header is the + length of the payload that follows the + header. However, uIP uses the uip_len variable + for holding the size of the entire packet, + including the IP header. For IPv4 this is not a + problem as the length field in the IPv4 header + contains the length of the entire packet. But + for IPv6 we need to add the size of the IPv6 + header (40 bytes). */ +#endif /* UIP_CONF_IPV6 */ + } else { + UIP_LOG("ip: packet shorter than reported in IP header."); + goto drop; + } + +#if !UIP_CONF_IPV6 + /* Check the fragment flag. */ + if((BUF->ipoffset[0] & 0x3f) != 0 || + BUF->ipoffset[1] != 0) { +#if UIP_REASSEMBLY + uip_len = uip_reass(); + if(uip_len == 0) { + goto drop; + } +#else /* UIP_REASSEMBLY */ + UIP_STAT(++uip_stat.ip.drop); + UIP_STAT(++uip_stat.ip.fragerr); + UIP_LOG("ip: fragment dropped."); + goto drop; +#endif /* UIP_REASSEMBLY */ + } +#endif /* UIP_CONF_IPV6 */ + + if(uip_ipaddr_cmp(uip_hostaddr, all_zeroes_addr)) { + /* If we are configured to use ping IP address configuration and + hasn't been assigned an IP address yet, we accept all ICMP + packets. */ +#if UIP_PINGADDRCONF && !UIP_CONF_IPV6 + if(BUF->proto == UIP_PROTO_ICMP) { + UIP_LOG("ip: possible ping config packet received."); + goto icmp_input; + } else { + UIP_LOG("ip: packet dropped since no address assigned."); + goto drop; + } +#endif /* UIP_PINGADDRCONF */ + + } else { + /* If IP broadcast support is configured, we check for a broadcast + UDP packet, which may be destined to us. */ +#if UIP_BROADCAST + DEBUG_PRINTF("UDP IP checksum 0x%04x\n", uip_ipchksum()); + if(BUF->proto == UIP_PROTO_UDP && + uip_ipaddr_cmp(BUF->destipaddr, all_ones_addr) + /*&& + uip_ipchksum() == 0xffff*/) { + goto udp_input; + } +#endif /* UIP_BROADCAST */ + + /* Check if the packet is destined for our IP address. */ +#if !UIP_CONF_IPV6 + if(!uip_ipaddr_cmp(BUF->destipaddr, uip_hostaddr)) { + UIP_STAT(++uip_stat.ip.drop); + goto drop; + } +#else /* UIP_CONF_IPV6 */ + /* For IPv6, packet reception is a little trickier as we need to + make sure that we listen to certain multicast addresses (all + hosts multicast address, and the solicited-node multicast + address) as well. However, we will cheat here and accept all + multicast packets that are sent to the ff02::/16 addresses. */ + if(!uip_ipaddr_cmp(BUF->destipaddr, uip_hostaddr) && + BUF->destipaddr[0] != HTONS(0xff02)) { + UIP_STAT(++uip_stat.ip.drop); + goto drop; + } +#endif /* UIP_CONF_IPV6 */ + } + +#if !UIP_CONF_IPV6 + if(uip_ipchksum() != 0xffff) { /* Compute and check the IP header + checksum. */ + UIP_STAT(++uip_stat.ip.drop); + UIP_STAT(++uip_stat.ip.chkerr); + UIP_LOG("ip: bad checksum."); + goto drop; + } +#endif /* UIP_CONF_IPV6 */ + + if(BUF->proto == UIP_PROTO_TCP) { /* Check for TCP packet. If so, + proceed with TCP input + processing. */ + goto tcp_input; + } + +#if UIP_UDP + if(BUF->proto == UIP_PROTO_UDP) { + goto udp_input; + } +#endif /* UIP_UDP */ + +#if !UIP_CONF_IPV6 + /* ICMPv4 processing code follows. */ + if(BUF->proto != UIP_PROTO_ICMP) { /* We only allow ICMP packets from + here. */ + UIP_STAT(++uip_stat.ip.drop); + UIP_STAT(++uip_stat.ip.protoerr); + UIP_LOG("ip: neither tcp nor icmp."); + goto drop; + } + +#if UIP_PINGADDRCONF + icmp_input: +#endif /* UIP_PINGADDRCONF */ + UIP_STAT(++uip_stat.icmp.recv); + + /* ICMP echo (i.e., ping) processing. This is simple, we only change + the ICMP type from ECHO to ECHO_REPLY and adjust the ICMP + checksum before we return the packet. */ + if(ICMPBUF->type != ICMP_ECHO) { + UIP_STAT(++uip_stat.icmp.drop); + UIP_STAT(++uip_stat.icmp.typeerr); + UIP_LOG("icmp: not icmp echo."); + goto drop; + } + + /* If we are configured to use ping IP address assignment, we use + the destination IP address of this ping packet and assign it to + ourself. */ +#if UIP_PINGADDRCONF + if((uip_hostaddr[0] | uip_hostaddr[1]) == 0) { + uip_hostaddr[0] = BUF->destipaddr[0]; + uip_hostaddr[1] = BUF->destipaddr[1]; + } +#endif /* UIP_PINGADDRCONF */ + + ICMPBUF->type = ICMP_ECHO_REPLY; + + if(ICMPBUF->icmpchksum >= HTONS(0xffff - (ICMP_ECHO << 8))) { + ICMPBUF->icmpchksum += HTONS(ICMP_ECHO << 8) + 1; + } else { + ICMPBUF->icmpchksum += HTONS(ICMP_ECHO << 8); + } + + /* Swap IP addresses. */ + uip_ipaddr_copy(BUF->destipaddr, BUF->srcipaddr); + uip_ipaddr_copy(BUF->srcipaddr, uip_hostaddr); + + UIP_STAT(++uip_stat.icmp.sent); + goto send; + + /* End of IPv4 input header processing code. */ +#else /* !UIP_CONF_IPV6 */ + + /* This is IPv6 ICMPv6 processing code. */ + DEBUG_PRINTF("icmp6_input: length %d\n", uip_len); + + if(BUF->proto != UIP_PROTO_ICMP6) { /* We only allow ICMPv6 packets from + here. */ + UIP_STAT(++uip_stat.ip.drop); + UIP_STAT(++uip_stat.ip.protoerr); + UIP_LOG("ip: neither tcp nor icmp6."); + goto drop; + } + + UIP_STAT(++uip_stat.icmp.recv); + + /* If we get a neighbor solicitation for our address we should send + a neighbor advertisement message back. */ + if(ICMPBUF->type == ICMP6_NEIGHBOR_SOLICITATION) { + if(uip_ipaddr_cmp(ICMPBUF->icmp6data, uip_hostaddr)) { + + if(ICMPBUF->options[0] == ICMP6_OPTION_SOURCE_LINK_ADDRESS) { + /* Save the sender's address in our neighbor list. */ + uip_neighbor_add(ICMPBUF->srcipaddr, &(ICMPBUF->options[2])); + } + + /* We should now send a neighbor advertisement back to where the + neighbor solicication came from. */ + ICMPBUF->type = ICMP6_NEIGHBOR_ADVERTISEMENT; + ICMPBUF->flags = ICMP6_FLAG_S; /* Solicited flag. */ + + ICMPBUF->reserved1 = ICMPBUF->reserved2 = ICMPBUF->reserved3 = 0; + + uip_ipaddr_copy(ICMPBUF->destipaddr, ICMPBUF->srcipaddr); + uip_ipaddr_copy(ICMPBUF->srcipaddr, uip_hostaddr); + ICMPBUF->options[0] = ICMP6_OPTION_TARGET_LINK_ADDRESS; + ICMPBUF->options[1] = 1; /* Options length, 1 = 8 bytes. */ + memcpy(&(ICMPBUF->options[2]), &uip_ethaddr, sizeof(uip_ethaddr)); + ICMPBUF->icmpchksum = 0; + ICMPBUF->icmpchksum = ~uip_icmp6chksum(); + goto send; + + } + goto drop; + } else if(ICMPBUF->type == ICMP6_ECHO) { + /* ICMP echo (i.e., ping) processing. This is simple, we only + change the ICMP type from ECHO to ECHO_REPLY and update the + ICMP checksum before we return the packet. */ + + ICMPBUF->type = ICMP6_ECHO_REPLY; + + uip_ipaddr_copy(BUF->destipaddr, BUF->srcipaddr); + uip_ipaddr_copy(BUF->srcipaddr, uip_hostaddr); + ICMPBUF->icmpchksum = 0; + ICMPBUF->icmpchksum = ~uip_icmp6chksum(); + + UIP_STAT(++uip_stat.icmp.sent); + goto send; + } else { + DEBUG_PRINTF("Unknown icmp6 message type %d\n", ICMPBUF->type); + UIP_STAT(++uip_stat.icmp.drop); + UIP_STAT(++uip_stat.icmp.typeerr); + UIP_LOG("icmp: unknown ICMP message."); + goto drop; + } + + /* End of IPv6 ICMP processing. */ + +#endif /* !UIP_CONF_IPV6 */ + +#if UIP_UDP + /* UDP input processing. */ + udp_input: + /* UDP processing is really just a hack. We don't do anything to the + UDP/IP headers, but let the UDP application do all the hard + work. If the application sets uip_slen, it has a packet to + send. */ +#if UIP_UDP_CHECKSUMS + uip_len = uip_len - UIP_IPUDPH_LEN; + uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN]; + if(UDPBUF->udpchksum != 0 && uip_udpchksum() != 0xffff) { + UIP_STAT(++uip_stat.udp.drop); + UIP_STAT(++uip_stat.udp.chkerr); + UIP_LOG("udp: bad checksum."); + goto drop; + } +#else /* UIP_UDP_CHECKSUMS */ + uip_len = uip_len - UIP_IPUDPH_LEN; +#endif /* UIP_UDP_CHECKSUMS */ + + /* Demultiplex this UDP packet between the UDP "connections". */ + for(uip_udp_conn = &uip_udp_conns[0]; + uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS]; + ++uip_udp_conn) { + /* If the local UDP port is non-zero, the connection is considered + to be used. If so, the local port number is checked against the + destination port number in the received packet. If the two port + numbers match, the remote port number is checked if the + connection is bound to a remote port. Finally, if the + connection is bound to a remote IP address, the source IP + address of the packet is checked. */ + if(uip_udp_conn->lport != 0 && + UDPBUF->destport == uip_udp_conn->lport && + (uip_udp_conn->rport == 0 || + UDPBUF->srcport == uip_udp_conn->rport) && + (uip_ipaddr_cmp(uip_udp_conn->ripaddr, all_zeroes_addr) || + uip_ipaddr_cmp(uip_udp_conn->ripaddr, all_ones_addr) || + uip_ipaddr_cmp(BUF->srcipaddr, uip_udp_conn->ripaddr))) { + goto udp_found; + } + } + UIP_LOG("udp: no matching connection found"); + goto drop; + + udp_found: + uip_conn = NULL; + uip_flags = UIP_NEWDATA; + uip_sappdata = uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN]; + uip_slen = 0; + UIP_UDP_APPCALL(); + udp_send: + if(uip_slen == 0) { + goto drop; + } + uip_len = uip_slen + UIP_IPUDPH_LEN; + +#if UIP_CONF_IPV6 + /* For IPv6, the IP length field does not include the IPv6 IP header + length. */ + BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8); + BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff); +#else /* UIP_CONF_IPV6 */ + BUF->len[0] = (uip_len >> 8); + BUF->len[1] = (uip_len & 0xff); +#endif /* UIP_CONF_IPV6 */ + + BUF->ttl = uip_udp_conn->ttl; + BUF->proto = UIP_PROTO_UDP; + + UDPBUF->udplen = HTONS(uip_slen + UIP_UDPH_LEN); + UDPBUF->udpchksum = 0; + + BUF->srcport = uip_udp_conn->lport; + BUF->destport = uip_udp_conn->rport; + + uip_ipaddr_copy(BUF->srcipaddr, uip_hostaddr); + uip_ipaddr_copy(BUF->destipaddr, uip_udp_conn->ripaddr); + + uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPTCPH_LEN]; + +#if UIP_UDP_CHECKSUMS + /* Calculate UDP checksum. */ + UDPBUF->udpchksum = ~(uip_udpchksum()); + if(UDPBUF->udpchksum == 0) { + UDPBUF->udpchksum = 0xffff; + } +#endif /* UIP_UDP_CHECKSUMS */ + + goto ip_send_nolen; +#endif /* UIP_UDP */ + + /* TCP input processing. */ + tcp_input: + UIP_STAT(++uip_stat.tcp.recv); + + /* Start of TCP input header processing code. */ + + if(uip_tcpchksum() != 0xffff) { /* Compute and check the TCP + checksum. */ + UIP_STAT(++uip_stat.tcp.drop); + UIP_STAT(++uip_stat.tcp.chkerr); + UIP_LOG("tcp: bad checksum."); + goto drop; + } + + + /* Demultiplex this segment. */ + /* First check any active connections. */ + for(uip_connr = &uip_conns[0]; uip_connr <= &uip_conns[UIP_CONNS - 1]; + ++uip_connr) { + if(uip_connr->tcpstateflags != UIP_CLOSED && + BUF->destport == uip_connr->lport && + BUF->srcport == uip_connr->rport && + uip_ipaddr_cmp(BUF->srcipaddr, uip_connr->ripaddr)) { + goto found; + } + } + + /* If we didn't find and active connection that expected the packet, + either this packet is an old duplicate, or this is a SYN packet + destined for a connection in LISTEN. If the SYN flag isn't set, + it is an old packet and we send a RST. */ + if((BUF->flags & TCP_CTL) != TCP_SYN) { + goto reset; + } + + tmp16 = BUF->destport; + +#ifdef UIP_TCP_LISTEN + /* Next, check listening connections. */ + for(c = 0; c < UIP_LISTENPORTS; ++c) { + if(tmp16 == uip_listenports[c]) + goto found_listen; + } +#endif + + /* No matching connection found, so we send a RST packet. */ + UIP_STAT(++uip_stat.tcp.synrst); + reset: + + /* We do not send resets in response to resets. */ + if(BUF->flags & TCP_RST) { + goto drop; + } + + UIP_STAT(++uip_stat.tcp.rst); + + BUF->flags = TCP_RST | TCP_ACK; + uip_len = UIP_IPTCPH_LEN; + BUF->tcpoffset = 5 << 4; + + /* Flip the seqno and ackno fields in the TCP header. */ + c = BUF->seqno[3]; + BUF->seqno[3] = BUF->ackno[3]; + BUF->ackno[3] = c; + + c = BUF->seqno[2]; + BUF->seqno[2] = BUF->ackno[2]; + BUF->ackno[2] = c; + + c = BUF->seqno[1]; + BUF->seqno[1] = BUF->ackno[1]; + BUF->ackno[1] = c; + + c = BUF->seqno[0]; + BUF->seqno[0] = BUF->ackno[0]; + BUF->ackno[0] = c; + + /* We also have to increase the sequence number we are + acknowledging. If the least significant byte overflowed, we need + to propagate the carry to the other bytes as well. */ + if(++BUF->ackno[3] == 0) { + if(++BUF->ackno[2] == 0) { + if(++BUF->ackno[1] == 0) { + ++BUF->ackno[0]; + } + } + } + + /* Swap port numbers. */ + tmp16 = BUF->srcport; + BUF->srcport = BUF->destport; + BUF->destport = tmp16; + + /* Swap IP addresses. */ + uip_ipaddr_copy(BUF->destipaddr, BUF->srcipaddr); + uip_ipaddr_copy(BUF->srcipaddr, uip_hostaddr); + + /* And send out the RST packet! */ + goto tcp_send_noconn; + +#ifdef UIP_TCP_LISTEN + /* This label will be jumped to if we matched the incoming packet + with a connection in LISTEN. In that case, we should create a new + connection and send a SYNACK in return. */ + found_listen: + /* First we check if there are any connections avaliable. Unused + connections are kept in the same table as used connections, but + unused ones have the tcpstate set to CLOSED. Also, connections in + TIME_WAIT are kept track of and we'll use the oldest one if no + CLOSED connections are found. Thanks to Eddie C. Dost for a very + nice algorithm for the TIME_WAIT search. */ + uip_connr = 0; + for(c = 0; c < UIP_CONNS; ++c) { + if(uip_conns[c].tcpstateflags == UIP_CLOSED) { + uip_connr = &uip_conns[c]; + break; + } + if(uip_conns[c].tcpstateflags == UIP_TIME_WAIT) { + if(uip_connr == 0 || + uip_conns[c].timer > uip_connr->timer) { + uip_connr = &uip_conns[c]; + } + } + } + + if(uip_connr == 0) { + /* All connections are used already, we drop packet and hope that + the remote end will retransmit the packet at a time when we + have more spare connections. */ + UIP_STAT(++uip_stat.tcp.syndrop); + UIP_LOG("tcp: found no unused connections."); + goto drop; + } + uip_conn = uip_connr; + + /* Fill in the necessary fields for the new connection. */ + uip_connr->rto = uip_connr->timer = UIP_RTO; + uip_connr->sa = 0; + uip_connr->sv = 4; + uip_connr->nrtx = 0; + uip_connr->lport = BUF->destport; + uip_connr->rport = BUF->srcport; + uip_ipaddr_copy(uip_connr->ripaddr, BUF->srcipaddr); + uip_connr->tcpstateflags = UIP_SYN_RCVD; + + uip_connr->snd_nxt[0] = iss[0]; + uip_connr->snd_nxt[1] = iss[1]; + uip_connr->snd_nxt[2] = iss[2]; + uip_connr->snd_nxt[3] = iss[3]; + uip_connr->len = 1; + + /* rcv_nxt should be the seqno from the incoming packet + 1. */ + uip_connr->rcv_nxt[3] = BUF->seqno[3]; + uip_connr->rcv_nxt[2] = BUF->seqno[2]; + uip_connr->rcv_nxt[1] = BUF->seqno[1]; + uip_connr->rcv_nxt[0] = BUF->seqno[0]; + uip_add_rcv_nxt(1); + + /* Parse the TCP MSS option, if present. */ + if((BUF->tcpoffset & 0xf0) > 0x50) { + for(c = 0; c < ((BUF->tcpoffset >> 4) - 5) << 2 ;) { + opt = uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + c]; + if(opt == TCP_OPT_END) { + /* End of options. */ + break; + } else if(opt == TCP_OPT_NOOP) { + ++c; + /* NOP option. */ + } else if(opt == TCP_OPT_MSS && + uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == TCP_OPT_MSS_LEN) { + /* An MSS option with the right option length. */ + tmp16 = ((u16_t)uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8) | + (u16_t)uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN + 3 + c]; + uip_connr->initialmss = uip_connr->mss = + tmp16 > UIP_TCP_MSS? UIP_TCP_MSS: tmp16; + + /* And we are done processing options. */ + break; + } else { + /* All other options have a length field, so that we easily + can skip past them. */ + if(uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0) { + /* If the length field is zero, the options are malformed + and we don't process them further. */ + break; + } + c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c]; + } + } + } +#endif + + /* Our response will be a SYNACK. */ +#if UIP_ACTIVE_OPEN + tcp_send_synack: + BUF->flags = TCP_ACK; + + tcp_send_syn: + BUF->flags |= TCP_SYN; +#else /* UIP_ACTIVE_OPEN */ + tcp_send_synack: + BUF->flags = TCP_SYN | TCP_ACK; +#endif /* UIP_ACTIVE_OPEN */ + + /* We send out the TCP Maximum Segment Size option with our + SYNACK. */ + BUF->optdata[0] = TCP_OPT_MSS; + BUF->optdata[1] = TCP_OPT_MSS_LEN; + BUF->optdata[2] = (UIP_TCP_MSS) / 256; + BUF->optdata[3] = (UIP_TCP_MSS) & 255; + uip_len = UIP_IPTCPH_LEN + TCP_OPT_MSS_LEN; + BUF->tcpoffset = ((UIP_TCPH_LEN + TCP_OPT_MSS_LEN) / 4) << 4; + goto tcp_send; + + /* This label will be jumped to if we found an active connection. */ + found: + uip_conn = uip_connr; + uip_flags = 0; + /* We do a very naive form of TCP reset processing; we just accept + any RST and kill our connection. We should in fact check if the + sequence number of this reset is wihtin our advertised window + before we accept the reset. */ + if(BUF->flags & TCP_RST) { + uip_connr->tcpstateflags = UIP_CLOSED; + UIP_LOG("tcp: got reset, aborting connection."); + uip_flags = UIP_ABORT; + UIP_APPCALL(); + goto drop; + } + /* Calculated the length of the data, if the application has sent + any data to us. */ + c = (BUF->tcpoffset >> 4) << 2; + /* uip_len will contain the length of the actual TCP data. This is + calculated by subtracing the length of the TCP header (in + c) and the length of the IP header (20 bytes). */ + uip_len = uip_len - c - UIP_IPH_LEN; + + /* First, check if the sequence number of the incoming packet is + what we're expecting next. If not, we send out an ACK with the + correct numbers in. */ + if(!(((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_SYN_SENT) && + ((BUF->flags & TCP_CTL) == (TCP_SYN | TCP_ACK)))) { + if((uip_len > 0 || ((BUF->flags & (TCP_SYN | TCP_FIN)) != 0)) && + (BUF->seqno[0] != uip_connr->rcv_nxt[0] || + BUF->seqno[1] != uip_connr->rcv_nxt[1] || + BUF->seqno[2] != uip_connr->rcv_nxt[2] || + BUF->seqno[3] != uip_connr->rcv_nxt[3])) { + goto tcp_send_ack; + } + } + + /* Next, check if the incoming segment acknowledges any outstanding + data. If so, we update the sequence number, reset the length of + the outstanding data, calculate RTT estimations, and reset the + retransmission timer. */ + if((BUF->flags & TCP_ACK) && uip_outstanding(uip_connr)) { + uip_add32(uip_connr->snd_nxt, uip_connr->len); + + if(BUF->ackno[0] == uip_acc32[0] && + BUF->ackno[1] == uip_acc32[1] && + BUF->ackno[2] == uip_acc32[2] && + BUF->ackno[3] == uip_acc32[3]) { + /* Update sequence number. */ + uip_connr->snd_nxt[0] = uip_acc32[0]; + uip_connr->snd_nxt[1] = uip_acc32[1]; + uip_connr->snd_nxt[2] = uip_acc32[2]; + uip_connr->snd_nxt[3] = uip_acc32[3]; + + + /* Do RTT estimation, unless we have done retransmissions. */ + if(uip_connr->nrtx == 0) { + signed char m; + m = uip_connr->rto - uip_connr->timer; + /* This is taken directly from VJs original code in his paper */ + m = m - (uip_connr->sa >> 3); + uip_connr->sa += m; + if(m < 0) { + m = -m; + } + m = m - (uip_connr->sv >> 2); + uip_connr->sv += m; + uip_connr->rto = (uip_connr->sa >> 3) + uip_connr->sv; + + } + /* Set the acknowledged flag. */ + uip_flags = UIP_ACKDATA; + /* Reset the retransmission timer. */ + uip_connr->timer = uip_connr->rto; + + /* Reset length of outstanding data. */ + uip_connr->len = 0; + } + + } + + /* Do different things depending on in what state the connection is. */ + switch(uip_connr->tcpstateflags & UIP_TS_MASK) { + /* CLOSED and LISTEN are not handled here. CLOSE_WAIT is not + implemented, since we force the application to close when the + peer sends a FIN (hence the application goes directly from + ESTABLISHED to LAST_ACK). */ + case UIP_SYN_RCVD: + /* In SYN_RCVD we have sent out a SYNACK in response to a SYN, and + we are waiting for an ACK that acknowledges the data we sent + out the last time. Therefore, we want to have the UIP_ACKDATA + flag set. If so, we enter the ESTABLISHED state. */ + if(uip_flags & UIP_ACKDATA) { + uip_connr->tcpstateflags = UIP_ESTABLISHED; + uip_flags = UIP_CONNECTED; + uip_connr->len = 0; + if(uip_len > 0) { + uip_flags |= UIP_NEWDATA; + uip_add_rcv_nxt(uip_len); + } + uip_slen = 0; + UIP_APPCALL(); + goto appsend; + } + goto drop; +#if UIP_ACTIVE_OPEN + case UIP_SYN_SENT: + /* In SYN_SENT, we wait for a SYNACK that is sent in response to + our SYN. The rcv_nxt is set to sequence number in the SYNACK + plus one, and we send an ACK. We move into the ESTABLISHED + state. */ + if((uip_flags & UIP_ACKDATA) && + (BUF->flags & TCP_CTL) == (TCP_SYN | TCP_ACK)) { + + /* Parse the TCP MSS option, if present. */ + if((BUF->tcpoffset & 0xf0) > 0x50) { + for(c = 0; c < ((BUF->tcpoffset >> 4) - 5) << 2 ;) { + opt = uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN + c]; + if(opt == TCP_OPT_END) { + /* End of options. */ + break; + } else if(opt == TCP_OPT_NOOP) { + ++c; + /* NOP option. */ + } else if(opt == TCP_OPT_MSS && + uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == TCP_OPT_MSS_LEN) { + /* An MSS option with the right option length. */ + tmp16 = (uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8) | + uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 3 + c]; + uip_connr->initialmss = + uip_connr->mss = tmp16 > UIP_TCP_MSS? UIP_TCP_MSS: tmp16; + + /* And we are done processing options. */ + break; + } else { + /* All other options have a length field, so that we easily + can skip past them. */ + if(uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0) { + /* If the length field is zero, the options are malformed + and we don't process them further. */ + break; + } + c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c]; + } + } + } + uip_connr->tcpstateflags = UIP_ESTABLISHED; + uip_connr->rcv_nxt[0] = BUF->seqno[0]; + uip_connr->rcv_nxt[1] = BUF->seqno[1]; + uip_connr->rcv_nxt[2] = BUF->seqno[2]; + uip_connr->rcv_nxt[3] = BUF->seqno[3]; + uip_add_rcv_nxt(1); + uip_flags = UIP_CONNECTED | UIP_NEWDATA; + uip_connr->len = 0; + uip_len = 0; + uip_slen = 0; + UIP_APPCALL(); + goto appsend; + } + /* Inform the application that the connection failed */ + uip_flags = UIP_ABORT; + UIP_APPCALL(); + /* The connection is closed after we send the RST */ + uip_conn->tcpstateflags = UIP_CLOSED; + goto reset; +#endif /* UIP_ACTIVE_OPEN */ + + case UIP_ESTABLISHED: + /* In the ESTABLISHED state, we call upon the application to feed + data into the uip_buf. If the UIP_ACKDATA flag is set, the + application should put new data into the buffer, otherwise we are + retransmitting an old segment, and the application should put that + data into the buffer. + + If the incoming packet is a FIN, we should close the connection on + this side as well, and we send out a FIN and enter the LAST_ACK + state. We require that there is no outstanding data; otherwise the + sequence numbers will be screwed up. */ + + if(BUF->flags & TCP_FIN && !(uip_connr->tcpstateflags & UIP_STOPPED)) { + if(uip_outstanding(uip_connr)) { + goto drop; + } + uip_add_rcv_nxt(1 + uip_len); + uip_flags |= UIP_CLOSE; + if(uip_len > 0) { + uip_flags |= UIP_NEWDATA; + } + UIP_APPCALL(); + uip_connr->len = 1; + uip_connr->tcpstateflags = UIP_LAST_ACK; + uip_connr->nrtx = 0; + tcp_send_finack: + BUF->flags = TCP_FIN | TCP_ACK; + goto tcp_send_nodata; + } + + /* Check the URG flag. If this is set, the segment carries urgent + data that we must pass to the application. */ + if((BUF->flags & TCP_URG) != 0) { +#if UIP_URGDATA > 0 + uip_urglen = (BUF->urgp[0] << 8) | BUF->urgp[1]; + if(uip_urglen > uip_len) { + /* There is more urgent data in the next segment to come. */ + uip_urglen = uip_len; + } + uip_add_rcv_nxt(uip_urglen); + uip_len -= uip_urglen; + uip_urgdata = uip_appdata; + uip_appdata += uip_urglen; + } else { + uip_urglen = 0; +#else /* UIP_URGDATA > 0 */ + uip_appdata = ((char *)uip_appdata) + ((BUF->urgp[0] << 8) | BUF->urgp[1]); + uip_len -= (BUF->urgp[0] << 8) | BUF->urgp[1]; +#endif /* UIP_URGDATA > 0 */ + } + + /* If uip_len > 0 we have TCP data in the packet, and we flag this + by setting the UIP_NEWDATA flag and update the sequence number + we acknowledge. If the application has stopped the dataflow + using uip_stop(), we must not accept any data packets from the + remote host. */ + if(uip_len > 0 && !(uip_connr->tcpstateflags & UIP_STOPPED)) { + uip_flags |= UIP_NEWDATA; + uip_add_rcv_nxt(uip_len); + } + + /* Check if the available buffer space advertised by the other end + is smaller than the initial MSS for this connection. If so, we + set the current MSS to the window size to ensure that the + application does not send more data than the other end can + handle. + + If the remote host advertises a zero window, we set the MSS to + the initial MSS so that the application will send an entire MSS + of data. This data will not be acknowledged by the receiver, + and the application will retransmit it. This is called the + "persistent timer" and uses the retransmission mechanim. + */ + tmp16 = ((u16_t)BUF->wnd[0] << 8) + (u16_t)BUF->wnd[1]; + if(tmp16 > uip_connr->initialmss || + tmp16 == 0) { + tmp16 = uip_connr->initialmss; + } + uip_connr->mss = tmp16; + + /* If this packet constitutes an ACK for outstanding data (flagged + by the UIP_ACKDATA flag, we should call the application since it + might want to send more data. If the incoming packet had data + from the peer (as flagged by the UIP_NEWDATA flag), the + application must also be notified. + + When the application is called, the global variable uip_len + contains the length of the incoming data. The application can + access the incoming data through the global pointer + uip_appdata, which usually points UIP_IPTCPH_LEN + UIP_LLH_LEN + bytes into the uip_buf array. + + If the application wishes to send any data, this data should be + put into the uip_appdata and the length of the data should be + put into uip_len. If the application don't have any data to + send, uip_len must be set to 0. */ + if(uip_flags & (UIP_NEWDATA | UIP_ACKDATA)) { + uip_slen = 0; + UIP_APPCALL(); + + appsend: + + if(uip_flags & UIP_ABORT) { + uip_slen = 0; + uip_connr->tcpstateflags = UIP_CLOSED; + BUF->flags = TCP_RST | TCP_ACK; + goto tcp_send_nodata; + } + + if(uip_flags & UIP_CLOSE) { + uip_slen = 0; + uip_connr->len = 1; + uip_connr->tcpstateflags = UIP_FIN_WAIT_1; + uip_connr->nrtx = 0; + BUF->flags = TCP_FIN | TCP_ACK; + goto tcp_send_nodata; + } + + /* If uip_slen > 0, the application has data to be sent. */ + if(uip_slen > 0) { + + /* If the connection has acknowledged data, the contents of + the ->len variable should be discarded. */ + if((uip_flags & UIP_ACKDATA) != 0) { + uip_connr->len = 0; + } + + /* If the ->len variable is non-zero the connection has + already data in transit and cannot send anymore right + now. */ + if(uip_connr->len == 0) { + + /* The application cannot send more than what is allowed by + the mss (the minumum of the MSS and the available + window). */ + if(uip_slen > uip_connr->mss) { + uip_slen = uip_connr->mss; + } + + /* Remember how much data we send out now so that we know + when everything has been acknowledged. */ + uip_connr->len = uip_slen; + } else { + + /* If the application already had unacknowledged data, we + make sure that the application does not send (i.e., + retransmit) out more than it previously sent out. */ + uip_slen = uip_connr->len; + } + } + uip_connr->nrtx = 0; + apprexmit: + uip_appdata = uip_sappdata; + + /* If the application has data to be sent, or if the incoming + packet had new data in it, we must send out a packet. */ + if(uip_slen > 0 && uip_connr->len > 0) { + /* Add the length of the IP and TCP headers. */ + uip_len = uip_connr->len + UIP_TCPIP_HLEN; + /* We always set the ACK flag in response packets. */ + BUF->flags = TCP_ACK | TCP_PSH; + /* Send the packet. */ + goto tcp_send_noopts; + } + /* If there is no data to send, just send out a pure ACK if + there is newdata. */ + if(uip_flags & UIP_NEWDATA) { + uip_len = UIP_TCPIP_HLEN; + BUF->flags = TCP_ACK; + goto tcp_send_noopts; + } + } + goto drop; + case UIP_LAST_ACK: + /* We can close this connection if the peer has acknowledged our + FIN. This is indicated by the UIP_ACKDATA flag. */ + if(uip_flags & UIP_ACKDATA) { + uip_connr->tcpstateflags = UIP_CLOSED; + uip_flags = UIP_CLOSE; + UIP_APPCALL(); + } + break; + + case UIP_FIN_WAIT_1: + /* The application has closed the connection, but the remote host + hasn't closed its end yet. Thus we do nothing but wait for a + FIN from the other side. */ + if(uip_len > 0) { + uip_add_rcv_nxt(uip_len); + } + if(BUF->flags & TCP_FIN) { + if(uip_flags & UIP_ACKDATA) { + uip_connr->tcpstateflags = UIP_TIME_WAIT; + uip_connr->timer = 0; + uip_connr->len = 0; + } else { + uip_connr->tcpstateflags = UIP_CLOSING; + } + uip_add_rcv_nxt(1); + uip_flags = UIP_CLOSE; + UIP_APPCALL(); + goto tcp_send_ack; + } else if(uip_flags & UIP_ACKDATA) { + uip_connr->tcpstateflags = UIP_FIN_WAIT_2; + uip_connr->len = 0; + goto drop; + } + if(uip_len > 0) { + goto tcp_send_ack; + } + goto drop; + + case UIP_FIN_WAIT_2: + if(uip_len > 0) { + uip_add_rcv_nxt(uip_len); + } + if(BUF->flags & TCP_FIN) { + uip_connr->tcpstateflags = UIP_TIME_WAIT; + uip_connr->timer = 0; + uip_add_rcv_nxt(1); + uip_flags = UIP_CLOSE; + UIP_APPCALL(); + goto tcp_send_ack; + } + if(uip_len > 0) { + goto tcp_send_ack; + } + goto drop; + + case UIP_TIME_WAIT: + goto tcp_send_ack; + + case UIP_CLOSING: + if(uip_flags & UIP_ACKDATA) { + uip_connr->tcpstateflags = UIP_TIME_WAIT; + uip_connr->timer = 0; + } + } + goto drop; + + + /* We jump here when we are ready to send the packet, and just want + to set the appropriate TCP sequence numbers in the TCP header. */ + tcp_send_ack: + BUF->flags = TCP_ACK; + tcp_send_nodata: + uip_len = UIP_IPTCPH_LEN; + tcp_send_noopts: + BUF->tcpoffset = (UIP_TCPH_LEN / 4) << 4; + tcp_send: + /* We're done with the input processing. We are now ready to send a + reply. Our job is to fill in all the fields of the TCP and IP + headers before calculating the checksum and finally send the + packet. */ + BUF->ackno[0] = uip_connr->rcv_nxt[0]; + BUF->ackno[1] = uip_connr->rcv_nxt[1]; + BUF->ackno[2] = uip_connr->rcv_nxt[2]; + BUF->ackno[3] = uip_connr->rcv_nxt[3]; + + BUF->seqno[0] = uip_connr->snd_nxt[0]; + BUF->seqno[1] = uip_connr->snd_nxt[1]; + BUF->seqno[2] = uip_connr->snd_nxt[2]; + BUF->seqno[3] = uip_connr->snd_nxt[3]; + + BUF->proto = UIP_PROTO_TCP; + + BUF->srcport = uip_connr->lport; + BUF->destport = uip_connr->rport; + + uip_ipaddr_copy(BUF->srcipaddr, uip_hostaddr); + uip_ipaddr_copy(BUF->destipaddr, uip_connr->ripaddr); + + if(uip_connr->tcpstateflags & UIP_STOPPED) { + /* If the connection has issued uip_stop(), we advertise a zero + window so that the remote host will stop sending data. */ + BUF->wnd[0] = BUF->wnd[1] = 0; + } else { + BUF->wnd[0] = ((UIP_RECEIVE_WINDOW) >> 8); + BUF->wnd[1] = ((UIP_RECEIVE_WINDOW) & 0xff); + } + + tcp_send_noconn: + BUF->ttl = UIP_TTL; +#if UIP_CONF_IPV6 + /* For IPv6, the IP length field does not include the IPv6 IP header + length. */ + BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8); + BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff); +#else /* UIP_CONF_IPV6 */ + BUF->len[0] = (uip_len >> 8); + BUF->len[1] = (uip_len & 0xff); +#endif /* UIP_CONF_IPV6 */ + + BUF->urgp[0] = BUF->urgp[1] = 0; + + /* Calculate TCP checksum. */ + BUF->tcpchksum = 0; + BUF->tcpchksum = ~(uip_tcpchksum()); + + ip_send_nolen: + +#if UIP_CONF_IPV6 + BUF->vtc = 0x60; + BUF->tcflow = 0x00; + BUF->flow = 0x00; +#else /* UIP_CONF_IPV6 */ + BUF->vhl = 0x45; + BUF->tos = 0; + BUF->ipoffset[0] = BUF->ipoffset[1] = 0; + ++ipid; + BUF->ipid[0] = ipid >> 8; + BUF->ipid[1] = ipid & 0xff; + /* Calculate IP checksum. */ + BUF->ipchksum = 0; + BUF->ipchksum = ~(uip_ipchksum()); + DEBUG_PRINTF("uip ip_send_nolen: chkecum 0x%04x\n", uip_ipchksum()); +#endif /* UIP_CONF_IPV6 */ + + UIP_STAT(++uip_stat.tcp.sent); + send: + DEBUG_PRINTF("Sending packet with length %d (%d)\n", uip_len, + (BUF->len[0] << 8) | BUF->len[1]); + + UIP_STAT(++uip_stat.ip.sent); + /* Return and let the caller do the actual transmission. */ + uip_flags = 0; + return; + drop: + uip_len = 0; + uip_flags = 0; + return; +} +/*---------------------------------------------------------------------------*/ +u16_t +htons(u16_t val) +{ + return HTONS(val); +} +/*---------------------------------------------------------------------------*/ +void +uip_send(const void *data, int len) +{ + if(len > 0) { + uip_slen = len; + if(data != uip_sappdata) { + memcpy(uip_sappdata, (data), uip_slen); + } + } +} +/** @} */ diff --git a/uip/uip/uip.h b/uip/uip/uip.h new file mode 100644 index 0000000..2fed1f6 --- /dev/null +++ b/uip/uip/uip.h @@ -0,0 +1,1603 @@ + +/** + * \addtogroup uip + * @{ + */ + +/** + * \file + * Header file for the uIP TCP/IP stack. + * \author Adam Dunkels <adam@dunkels.com> + * + * The uIP TCP/IP stack header file contains definitions for a number + * of C macros that are used by uIP programs as well as internal uIP + * structures, TCP/IP header structures and function declarations. + * + */ + + +/* + * Copyright (c) 2001-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: uip.h,v 1.40 2006/06/08 07:12:07 adam Exp $ + * + */ + +#ifndef __UIP_H__ +#define __UIP_H__ + +#include "uipopt.h" + +/** + * Repressentation of an IP address. + * + */ +typedef u16_t uip_ip4addr_t[2]; +typedef u16_t uip_ip6addr_t[8]; +#if UIP_CONF_IPV6 +typedef uip_ip6addr_t uip_ipaddr_t; +#else /* UIP_CONF_IPV6 */ +typedef uip_ip4addr_t uip_ipaddr_t; +#endif /* UIP_CONF_IPV6 */ + +/*---------------------------------------------------------------------------*/ +/* First, the functions that should be called from the + * system. Initialization, the periodic timer and incoming packets are + * handled by the following three functions. + */ + +/** + * \defgroup uipconffunc uIP configuration functions + * @{ + * + * The uIP configuration functions are used for setting run-time + * parameters in uIP such as IP addresses. + */ + +/** + * Set the IP address of this host. + * + * The IP address is represented as a 4-byte array where the first + * octet of the IP address is put in the first member of the 4-byte + * array. + * + * Example: + \code + + uip_ipaddr_t addr; + + uip_ipaddr(&addr, 192,168,1,2); + uip_sethostaddr(&addr); + + \endcode + * \param addr A pointer to an IP address of type uip_ipaddr_t; + * + * \sa uip_ipaddr() + * + * \hideinitializer + */ +#define uip_sethostaddr(addr) uip_ipaddr_copy(uip_hostaddr, (addr)) + +/** + * Get the IP address of this host. + * + * The IP address is represented as a 4-byte array where the first + * octet of the IP address is put in the first member of the 4-byte + * array. + * + * Example: + \code + uip_ipaddr_t hostaddr; + + uip_gethostaddr(&hostaddr); + \endcode + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the currently configured IP address. + * + * \hideinitializer + */ +#define uip_gethostaddr(addr) uip_ipaddr_copy((addr), uip_hostaddr) + +/** + * Set the default router's IP address. + * + * \param addr A pointer to a uip_ipaddr_t variable containing the IP + * address of the default router. + * + * \sa uip_ipaddr() + * + * \hideinitializer + */ +#define uip_setdraddr(addr) uip_ipaddr_copy(uip_draddr, (addr)) + +/** + * Set the netmask. + * + * \param addr A pointer to a uip_ipaddr_t variable containing the IP + * address of the netmask. + * + * \sa uip_ipaddr() + * + * \hideinitializer + */ +#define uip_setnetmask(addr) uip_ipaddr_copy(uip_netmask, (addr)) + + +/** + * Get the default router's IP address. + * + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the IP address of the default router. + * + * \hideinitializer + */ +#define uip_getdraddr(addr) uip_ipaddr_copy((addr), uip_draddr) + +/** + * Get the netmask. + * + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the value of the netmask. + * + * \hideinitializer + */ +#define uip_getnetmask(addr) uip_ipaddr_copy((addr), uip_netmask) + +/** @} */ + +/** + * \defgroup uipinit uIP initialization functions + * @{ + * + * The uIP initialization functions are used for booting uIP. + */ + +/** + * uIP initialization function. + * + * This function should be called at boot up to initilize the uIP + * TCP/IP stack. + */ +void uip_init(void); + +/** + * uIP initialization function. + * + * This function may be used at boot time to set the initial ip_id. + */ +void uip_setipid(u16_t id); + +/** @} */ + +/** + * \defgroup uipdevfunc uIP device driver functions + * @{ + * + * These functions are used by a network device driver for interacting + * with uIP. + */ + +/** + * Process an incoming packet. + * + * This function should be called when the device driver has received + * a packet from the network. The packet from the device driver must + * be present in the uip_buf buffer, and the length of the packet + * should be placed in the uip_len variable. + * + * When the function returns, there may be an outbound packet placed + * in the uip_buf packet buffer. If so, the uip_len variable is set to + * the length of the packet. If no packet is to be sent out, the + * uip_len variable is set to 0. + * + * The usual way of calling the function is presented by the source + * code below. + \code + uip_len = devicedriver_poll(); + if(uip_len > 0) { + uip_input(); + if(uip_len > 0) { + devicedriver_send(); + } + } + \endcode + * + * \note If you are writing a uIP device driver that needs ARP + * (Address Resolution Protocol), e.g., when running uIP over + * Ethernet, you will need to call the uIP ARP code before calling + * this function: + \code + #define BUF ((struct uip_eth_hdr *)&uip_buf[0]) + uip_len = ethernet_devicedrver_poll(); + if(uip_len > 0) { + if(BUF->type == HTONS(UIP_ETHTYPE_IP)) { + uip_arp_ipin(); + uip_input(); + if(uip_len > 0) { + uip_arp_out(); + ethernet_devicedriver_send(); + } + } else if(BUF->type == HTONS(UIP_ETHTYPE_ARP)) { + uip_arp_arpin(); + if(uip_len > 0) { + ethernet_devicedriver_send(); + } + } + \endcode + * + * \hideinitializer + */ +#define uip_input() uip_process(UIP_DATA) + +/** + * Periodic processing for a connection identified by its number. + * + * This function does the necessary periodic processing (timers, + * polling) for a uIP TCP conneciton, and should be called when the + * periodic uIP timer goes off. It should be called for every + * connection, regardless of whether they are open of closed. + * + * When the function returns, it may have an outbound packet waiting + * for service in the uIP packet buffer, and if so the uip_len + * variable is set to a value larger than zero. The device driver + * should be called to send out the packet. + * + * The ususal way of calling the function is through a for() loop like + * this: + \code + for(i = 0; i < UIP_CONNS; ++i) { + uip_periodic(i); + if(uip_len > 0) { + devicedriver_send(); + } + } + \endcode + * + * \note If you are writing a uIP device driver that needs ARP + * (Address Resolution Protocol), e.g., when running uIP over + * Ethernet, you will need to call the uip_arp_out() function before + * calling the device driver: + \code + for(i = 0; i < UIP_CONNS; ++i) { + uip_periodic(i); + if(uip_len > 0) { + uip_arp_out(); + ethernet_devicedriver_send(); + } + } + \endcode + * + * \param conn The number of the connection which is to be periodically polled. + * + * \hideinitializer + */ +#define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \ + uip_process(UIP_TIMER); } while (0) + +/** + * + * + */ +#define uip_conn_active(conn) (uip_conns[conn].tcpstateflags != UIP_CLOSED) + +/** + * Perform periodic processing for a connection identified by a pointer + * to its structure. + * + * Same as uip_periodic() but takes a pointer to the actual uip_conn + * struct instead of an integer as its argument. This function can be + * used to force periodic processing of a specific connection. + * + * \param conn A pointer to the uip_conn struct for the connection to + * be processed. + * + * \hideinitializer + */ +#define uip_periodic_conn(conn) do { uip_conn = conn; \ + uip_process(UIP_TIMER); } while (0) + +/** + * Reuqest that a particular connection should be polled. + * + * Similar to uip_periodic_conn() but does not perform any timer + * processing. The application is polled for new data. + * + * \param conn A pointer to the uip_conn struct for the connection to + * be processed. + * + * \hideinitializer + */ +#define uip_poll_conn(conn) do { uip_conn = conn; \ + uip_process(UIP_POLL_REQUEST); } while (0) + + +#if UIP_UDP +/** + * Periodic processing for a UDP connection identified by its number. + * + * This function is essentially the same as uip_periodic(), but for + * UDP connections. It is called in a similar fashion as the + * uip_periodic() function: + \code + for(i = 0; i < UIP_UDP_CONNS; i++) { + uip_udp_periodic(i); + if(uip_len > 0) { + devicedriver_send(); + } + } + \endcode + * + * \note As for the uip_periodic() function, special care has to be + * taken when using uIP together with ARP and Ethernet: + \code + for(i = 0; i < UIP_UDP_CONNS; i++) { + uip_udp_periodic(i); + if(uip_len > 0) { + uip_arp_out(); + ethernet_devicedriver_send(); + } + } + \endcode + * + * \param conn The number of the UDP connection to be processed. + * + * \hideinitializer + */ +#define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \ + uip_process(UIP_UDP_TIMER); } while (0) + +/** + * Periodic processing for a UDP connection identified by a pointer to + * its structure. + * + * Same as uip_udp_periodic() but takes a pointer to the actual + * uip_conn struct instead of an integer as its argument. This + * function can be used to force periodic processing of a specific + * connection. + * + * \param conn A pointer to the uip_udp_conn struct for the connection + * to be processed. + * + * \hideinitializer + */ +#define uip_udp_periodic_conn(conn) do { uip_udp_conn = conn; \ + uip_process(UIP_UDP_TIMER); } while (0) + + +#endif /* UIP_UDP */ + +/** + * The uIP packet buffer. + * + * The uip_buf array is used to hold incoming and outgoing + * packets. The device driver should place incoming data into this + * buffer. When sending data, the device driver should read the link + * level headers and the TCP/IP headers from this buffer. The size of + * the link level headers is configured by the UIP_LLH_LEN define. + * + * \note The application data need not be placed in this buffer, so + * the device driver must read it from the place pointed to by the + * uip_appdata pointer as illustrated by the following example: + \code + void + devicedriver_send(void) + { + hwsend(&uip_buf[0], UIP_LLH_LEN); + if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) { + hwsend(&uip_buf[UIP_LLH_LEN], uip_len - UIP_LLH_LEN); + } else { + hwsend(&uip_buf[UIP_LLH_LEN], UIP_TCPIP_HLEN); + hwsend(uip_appdata, uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN); + } + } + \endcode + */ +extern u8_t uip_buf[UIP_BUFSIZE+2]; + +/** @} */ + +/*---------------------------------------------------------------------------*/ +/* Functions that are used by the uIP application program. Opening and + * closing connections, sending and receiving data, etc. is all + * handled by the functions below. +*/ +/** + * \defgroup uipappfunc uIP application functions + * @{ + * + * Functions used by an application running of top of uIP. + */ + +#ifdef UIP_TCP_LISTEN +/** + * Start listening to the specified port. + * + * \note Since this function expects the port number in network byte + * order, a conversion using HTONS() or htons() is necessary. + * + \code + uip_listen(HTONS(80)); + \endcode + * + * \param port A 16-bit port number in network byte order. + */ +void uip_listen(u16_t port); + +/** + * Stop listening to the specified port. + * + * \note Since this function expects the port number in network byte + * order, a conversion using HTONS() or htons() is necessary. + * + \code + uip_unlisten(HTONS(80)); + \endcode + * + * \param port A 16-bit port number in network byte order. + */ +void uip_unlisten(u16_t port); +#endif + +/** + * Connect to a remote host using TCP. + * + * This function is used to start a new connection to the specified + * port on the specied host. It allocates a new connection identifier, + * sets the connection to the SYN_SENT state and sets the + * retransmission timer to 0. This will cause a TCP SYN segment to be + * sent out the next time this connection is periodically processed, + * which usually is done within 0.5 seconds after the call to + * uip_connect(). + * + * \note This function is avaliable only if support for active open + * has been configured by defining UIP_ACTIVE_OPEN to 1 in uipopt.h. + * + * \note Since this function requires the port number to be in network + * byte order, a conversion using HTONS() or htons() is necessary. + * + \code + uip_ipaddr_t ipaddr; + + uip_ipaddr(&ipaddr, 192,168,1,2); + uip_connect(&ipaddr, HTONS(80)); + \endcode + * + * \param ripaddr The IP address of the remote hot. + * + * \param port A 16-bit port number in network byte order. + * + * \return A pointer to the uIP connection identifier for the new connection, + * or NULL if no connection could be allocated. + * + */ +struct uip_conn *uip_connect(uip_ipaddr_t *ripaddr, u16_t port); + + + +/** + * \internal + * + * Check if a connection has outstanding (i.e., unacknowledged) data. + * + * \param conn A pointer to the uip_conn structure for the connection. + * + * \hideinitializer + */ +#define uip_outstanding(conn) ((conn)->len) + +/** + * Send data on the current connection. + * + * This function is used to send out a single segment of TCP + * data. Only applications that have been invoked by uIP for event + * processing can send data. + * + * The amount of data that actually is sent out after a call to this + * funcion is determined by the maximum amount of data TCP allows. uIP + * will automatically crop the data so that only the appropriate + * amount of data is sent. The function uip_mss() can be used to query + * uIP for the amount of data that actually will be sent. + * + * \note This function does not guarantee that the sent data will + * arrive at the destination. If the data is lost in the network, the + * application will be invoked with the uip_rexmit() event being + * set. The application will then have to resend the data using this + * function. + * + * \param data A pointer to the data which is to be sent. + * + * \param len The maximum amount of data bytes to be sent. + * + * \hideinitializer + */ +void uip_send(const void *data, int len); + +/** + * The length of any incoming data that is currently avaliable (if avaliable) + * in the uip_appdata buffer. + * + * The test function uip_data() must first be used to check if there + * is any data available at all. + * + * \hideinitializer + */ +/*void uip_datalen(void);*/ +#define uip_datalen() uip_len + +/** + * The length of any out-of-band data (urgent data) that has arrived + * on the connection. + * + * \note The configuration parameter UIP_URGDATA must be set for this + * function to be enabled. + * + * \hideinitializer + */ +#define uip_urgdatalen() uip_urglen + +/** + * Close the current connection. + * + * This function will close the current connection in a nice way. + * + * \hideinitializer + */ +#define uip_close() (uip_flags = UIP_CLOSE) + +/** + * Abort the current connection. + * + * This function will abort (reset) the current connection, and is + * usually used when an error has occured that prevents using the + * uip_close() function. + * + * \hideinitializer + */ +#define uip_abort() (uip_flags = UIP_ABORT) + +/** + * Tell the sending host to stop sending data. + * + * This function will close our receiver's window so that we stop + * receiving data for the current connection. + * + * \hideinitializer + */ +#define uip_stop() (uip_conn->tcpstateflags |= UIP_STOPPED) + +/** + * Find out if the current connection has been previously stopped with + * uip_stop(). + * + * \hideinitializer + */ +#define uip_stopped(conn) ((conn)->tcpstateflags & UIP_STOPPED) + +/** + * Restart the current connection, if is has previously been stopped + * with uip_stop(). + * + * This function will open the receiver's window again so that we + * start receiving data for the current connection. + * + * \hideinitializer + */ +#define uip_restart() do { uip_flags |= UIP_NEWDATA; \ + uip_conn->tcpstateflags &= ~UIP_STOPPED; \ + } while(0) + + +/* uIP tests that can be made to determine in what state the current + connection is, and what the application function should do. */ + +/** + * Is the current connection a UDP connection? + * + * This function checks whether the current connection is a UDP connection. + * + * \hideinitializer + * + */ +#define uip_udpconnection() (uip_conn == NULL) + +/** + * Is new incoming data available? + * + * Will reduce to non-zero if there is new data for the application + * present at the uip_appdata pointer. The size of the data is + * avaliable through the uip_len variable. + * + * \hideinitializer + */ +#define uip_newdata() (uip_flags & UIP_NEWDATA) + +/** + * Has previously sent data been acknowledged? + * + * Will reduce to non-zero if the previously sent data has been + * acknowledged by the remote host. This means that the application + * can send new data. + * + * \hideinitializer + */ +#define uip_acked() (uip_flags & UIP_ACKDATA) + +/** + * Has the connection just been connected? + * + * Reduces to non-zero if the current connection has been connected to + * a remote host. This will happen both if the connection has been + * actively opened (with uip_connect()) or passively opened (with + * uip_listen()). + * + * \hideinitializer + */ +#define uip_connected() (uip_flags & UIP_CONNECTED) + +/** + * Has the connection been closed by the other end? + * + * Is non-zero if the connection has been closed by the remote + * host. The application may then do the necessary clean-ups. + * + * \hideinitializer + */ +#define uip_closed() (uip_flags & UIP_CLOSE) + +/** + * Has the connection been aborted by the other end? + * + * Non-zero if the current connection has been aborted (reset) by the + * remote host. + * + * \hideinitializer + */ +#define uip_aborted() (uip_flags & UIP_ABORT) + +/** + * Has the connection timed out? + * + * Non-zero if the current connection has been aborted due to too many + * retransmissions. + * + * \hideinitializer + */ +#define uip_timedout() (uip_flags & UIP_TIMEDOUT) + +/** + * Do we need to retransmit previously data? + * + * Reduces to non-zero if the previously sent data has been lost in + * the network, and the application should retransmit it. The + * application should send the exact same data as it did the last + * time, using the uip_send() function. + * + * \hideinitializer + */ +#define uip_rexmit() (uip_flags & UIP_REXMIT) + +/** + * Is the connection being polled by uIP? + * + * Is non-zero if the reason the application is invoked is that the + * current connection has been idle for a while and should be + * polled. + * + * The polling event can be used for sending data without having to + * wait for the remote host to send data. + * + * \hideinitializer + */ +#define uip_poll() (uip_flags & UIP_POLL) + +/** + * Get the initial maxium segment size (MSS) of the current + * connection. + * + * \hideinitializer + */ +#define uip_initialmss() (uip_conn->initialmss) + +/** + * Get the current maxium segment size that can be sent on the current + * connection. + * + * The current maxiumum segment size that can be sent on the + * connection is computed from the receiver's window and the MSS of + * the connection (which also is available by calling + * uip_initialmss()). + * + * \hideinitializer + */ +#define uip_mss() (uip_conn->mss) + +/** + * Set up a new UDP connection. + * + * This function sets up a new UDP connection. The function will + * automatically allocate an unused local port for the new + * connection. However, another port can be chosen by using the + * uip_udp_bind() call, after the uip_udp_new() function has been + * called. + * + * Example: + \code + uip_ipaddr_t addr; + struct uip_udp_conn *c; + + uip_ipaddr(&addr, 192,168,2,1); + c = uip_udp_new(&addr, HTONS(12345)); + if(c != NULL) { + uip_udp_bind(c, HTONS(12344)); + } + \endcode + * \param ripaddr The IP address of the remote host. + * + * \param rport The remote port number in network byte order. + * + * \return The uip_udp_conn structure for the new connection or NULL + * if no connection could be allocated. + */ +struct uip_udp_conn *uip_udp_new(uip_ipaddr_t *ripaddr, u16_t rport); + +/** + * Removed a UDP connection. + * + * \param conn A pointer to the uip_udp_conn structure for the connection. + * + * \hideinitializer + */ +#define uip_udp_remove(conn) (conn)->lport = 0 + +/** + * Bind a UDP connection to a local port. + * + * \param conn A pointer to the uip_udp_conn structure for the + * connection. + * + * \param port The local port number, in network byte order. + * + * \hideinitializer + */ +#define uip_udp_bind(conn, port) (conn)->lport = port + +/** + * Send a UDP datagram of length len on the current connection. + * + * This function can only be called in response to a UDP event (poll + * or newdata). The data must be present in the uip_buf buffer, at the + * place pointed to by the uip_appdata pointer. + * + * \param len The length of the data in the uip_buf buffer. + * + * \hideinitializer + */ +#define uip_udp_send(len) uip_send((char *)uip_appdata, len) + +/** @} */ + +/* uIP convenience and converting functions. */ + +/** + * \defgroup uipconvfunc uIP conversion functions + * @{ + * + * These functions can be used for converting between different data + * formats used by uIP. + */ + +/** + * Construct an IP address from four bytes. + * + * This function constructs an IP address of the type that uIP handles + * internally from four bytes. The function is handy for specifying IP + * addresses to use with e.g. the uip_connect() function. + * + * Example: + \code + uip_ipaddr_t ipaddr; + struct uip_conn *c; + + uip_ipaddr(&ipaddr, 192,168,1,2); + c = uip_connect(&ipaddr, HTONS(80)); + \endcode + * + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the IP address. + * + * \param addr0 The first octet of the IP address. + * \param addr1 The second octet of the IP address. + * \param addr2 The third octet of the IP address. + * \param addr3 The forth octet of the IP address. + * + * \hideinitializer + */ +#define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \ + ((u16_t *)(addr))[0] = HTONS(((addr0) << 8) | (addr1)); \ + ((u16_t *)(addr))[1] = HTONS(((addr2) << 8) | (addr3)); \ + } while(0) + +/** + * Construct an IPv6 address from eight 16-bit words. + * + * This function constructs an IPv6 address. + * + * \hideinitializer + */ +#define uip_ip6addr(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7) do { \ + ((u16_t *)(addr))[0] = HTONS((addr0)); \ + ((u16_t *)(addr))[1] = HTONS((addr1)); \ + ((u16_t *)(addr))[2] = HTONS((addr2)); \ + ((u16_t *)(addr))[3] = HTONS((addr3)); \ + ((u16_t *)(addr))[4] = HTONS((addr4)); \ + ((u16_t *)(addr))[5] = HTONS((addr5)); \ + ((u16_t *)(addr))[6] = HTONS((addr6)); \ + ((u16_t *)(addr))[7] = HTONS((addr7)); \ + } while(0) + +/** + * Copy an IP address to another IP address. + * + * Copies an IP address from one place to another. + * + * Example: + \code + uip_ipaddr_t ipaddr1, ipaddr2; + + uip_ipaddr(&ipaddr1, 192,16,1,2); + uip_ipaddr_copy(&ipaddr2, &ipaddr1); + \endcode + * + * \param dest The destination for the copy. + * \param src The source from where to copy. + * + * \hideinitializer + */ +#if !UIP_CONF_IPV6 +#define uip_ipaddr_copy(dest, src) do { \ + ((u16_t *)dest)[0] = ((u16_t *)src)[0]; \ + ((u16_t *)dest)[1] = ((u16_t *)src)[1]; \ + } while(0) +#else /* !UIP_CONF_IPV6 */ +#define uip_ipaddr_copy(dest, src) memcpy(dest, src, sizeof(uip_ip6addr_t)) +#endif /* !UIP_CONF_IPV6 */ + +/** + * Compare two IP addresses + * + * Compares two IP addresses. + * + * Example: + \code + uip_ipaddr_t ipaddr1, ipaddr2; + + uip_ipaddr(&ipaddr1, 192,16,1,2); + if(uip_ipaddr_cmp(&ipaddr2, &ipaddr1)) { + printf("They are the same"); + } + \endcode + * + * \param addr1 The first IP address. + * \param addr2 The second IP address. + * + * \hideinitializer + */ +#if !UIP_CONF_IPV6 +#define uip_ipaddr_cmp(addr1, addr2) (((u16_t *)addr1)[0] == ((u16_t *)addr2)[0] && \ + ((u16_t *)addr1)[1] == ((u16_t *)addr2)[1]) +#else /* !UIP_CONF_IPV6 */ +#define uip_ipaddr_cmp(addr1, addr2) (memcmp(addr1, addr2, sizeof(uip_ip6addr_t)) == 0) +#endif /* !UIP_CONF_IPV6 */ + +/** + * Compare two IP addresses with netmasks + * + * Compares two IP addresses with netmasks. The masks are used to mask + * out the bits that are to be compared. + * + * Example: + \code + uip_ipaddr_t ipaddr1, ipaddr2, mask; + + uip_ipaddr(&mask, 255,255,255,0); + uip_ipaddr(&ipaddr1, 192,16,1,2); + uip_ipaddr(&ipaddr2, 192,16,1,3); + if(uip_ipaddr_maskcmp(&ipaddr1, &ipaddr2, &mask)) { + printf("They are the same"); + } + \endcode + * + * \param addr1 The first IP address. + * \param addr2 The second IP address. + * \param mask The netmask. + * + * \hideinitializer + */ +#define uip_ipaddr_maskcmp(addr1, addr2, mask) \ + (((((u16_t *)addr1)[0] & ((u16_t *)mask)[0]) == \ + (((u16_t *)addr2)[0] & ((u16_t *)mask)[0])) && \ + ((((u16_t *)addr1)[1] & ((u16_t *)mask)[1]) == \ + (((u16_t *)addr2)[1] & ((u16_t *)mask)[1]))) + + +/** + * Mask out the network part of an IP address. + * + * Masks out the network part of an IP address, given the address and + * the netmask. + * + * Example: + \code + uip_ipaddr_t ipaddr1, ipaddr2, netmask; + + uip_ipaddr(&ipaddr1, 192,16,1,2); + uip_ipaddr(&netmask, 255,255,255,0); + uip_ipaddr_mask(&ipaddr2, &ipaddr1, &netmask); + \endcode + * + * In the example above, the variable "ipaddr2" will contain the IP + * address 192.168.1.0. + * + * \param dest Where the result is to be placed. + * \param src The IP address. + * \param mask The netmask. + * + * \hideinitializer + */ +#define uip_ipaddr_mask(dest, src, mask) do { \ + ((u16_t *)dest)[0] = ((u16_t *)src)[0] & ((u16_t *)mask)[0]; \ + ((u16_t *)dest)[1] = ((u16_t *)src)[1] & ((u16_t *)mask)[1]; \ + } while(0) + +/** + * Pick the first octet of an IP address. + * + * Picks out the first octet of an IP address. + * + * Example: + \code + uip_ipaddr_t ipaddr; + u8_t octet; + + uip_ipaddr(&ipaddr, 1,2,3,4); + octet = uip_ipaddr1(&ipaddr); + \endcode + * + * In the example above, the variable "octet" will contain the value 1. + * + * \hideinitializer + */ +#define uip_ipaddr1(addr) (htons(((u16_t *)(addr))[0]) >> 8) + +/** + * Pick the second octet of an IP address. + * + * Picks out the second octet of an IP address. + * + * Example: + \code + uip_ipaddr_t ipaddr; + u8_t octet; + + uip_ipaddr(&ipaddr, 1,2,3,4); + octet = uip_ipaddr2(&ipaddr); + \endcode + * + * In the example above, the variable "octet" will contain the value 2. + * + * \hideinitializer + */ +#define uip_ipaddr2(addr) (htons(((u16_t *)(addr))[0]) & 0xff) + +/** + * Pick the third octet of an IP address. + * + * Picks out the third octet of an IP address. + * + * Example: + \code + uip_ipaddr_t ipaddr; + u8_t octet; + + uip_ipaddr(&ipaddr, 1,2,3,4); + octet = uip_ipaddr3(&ipaddr); + \endcode + * + * In the example above, the variable "octet" will contain the value 3. + * + * \hideinitializer + */ +#define uip_ipaddr3(addr) (htons(((u16_t *)(addr))[1]) >> 8) + +/** + * Pick the fourth octet of an IP address. + * + * Picks out the fourth octet of an IP address. + * + * Example: + \code + uip_ipaddr_t ipaddr; + u8_t octet; + + uip_ipaddr(&ipaddr, 1,2,3,4); + octet = uip_ipaddr4(&ipaddr); + \endcode + * + * In the example above, the variable "octet" will contain the value 4. + * + * \hideinitializer + */ +#define uip_ipaddr4(addr) (htons(((u16_t *)(addr))[1]) & 0xff) + +/** + * Convert 16-bit quantity from host byte order to network byte order. + * + * This macro is primarily used for converting constants from host + * byte order to network byte order. For converting variables to + * network byte order, use the htons() function instead. + * + * \hideinitializer + */ +#ifndef HTONS +# if UIP_BYTE_ORDER == UIP_BIG_ENDIAN +# define HTONS(n) (n) +# else /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */ +# define HTONS(n) (u16_t)((((u16_t) (n)) << 8) | (((u16_t) (n)) >> 8)) +# endif /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */ +#else +#error "HTONS already defined!" +#endif /* HTONS */ + +/** + * Convert 16-bit quantity from host byte order to network byte order. + * + * This function is primarily used for converting variables from host + * byte order to network byte order. For converting constants to + * network byte order, use the HTONS() macro instead. + */ +#ifndef htons +u16_t htons(u16_t val); +#endif /* htons */ +#ifndef ntohs +#define ntohs htons +#endif + +/** @} */ + +/** + * Pointer to the application data in the packet buffer. + * + * This pointer points to the application data when the application is + * called. If the application wishes to send data, the application may + * use this space to write the data into before calling uip_send(). + */ +extern void *uip_appdata; + +#if UIP_URGDATA > 0 +/* u8_t *uip_urgdata: + * + * This pointer points to any urgent data that has been received. Only + * present if compiled with support for urgent data (UIP_URGDATA). + */ +extern void *uip_urgdata; +#endif /* UIP_URGDATA > 0 */ + + +/** + * \defgroup uipdrivervars Variables used in uIP device drivers + * @{ + * + * uIP has a few global variables that are used in device drivers for + * uIP. + */ + +/** + * The length of the packet in the uip_buf buffer. + * + * The global variable uip_len holds the length of the packet in the + * uip_buf buffer. + * + * When the network device driver calls the uIP input function, + * uip_len should be set to the length of the packet in the uip_buf + * buffer. + * + * When sending packets, the device driver should use the contents of + * the uip_len variable to determine the length of the outgoing + * packet. + * + */ +extern u16_t uip_len; + +/** @} */ + +#if UIP_URGDATA > 0 +extern u16_t uip_urglen, uip_surglen; +#endif /* UIP_URGDATA > 0 */ + + +/** + * Representation of a uIP TCP connection. + * + * The uip_conn structure is used for identifying a connection. All + * but one field in the structure are to be considered read-only by an + * application. The only exception is the appstate field whos purpose + * is to let the application store application-specific state (e.g., + * file pointers) for the connection. The type of this field is + * configured in the "uipopt.h" header file. + */ +struct uip_conn { + uip_ipaddr_t ripaddr; /**< The IP address of the remote host. */ + + u16_t lport; /**< The local TCP port, in network byte order. */ + u16_t rport; /**< The local remote TCP port, in network byte + order. */ + + u8_t rcv_nxt[4]; /**< The sequence number that we expect to + receive next. */ + u8_t snd_nxt[4]; /**< The sequence number that was last sent by + us. */ + u16_t len; /**< Length of the data that was previously sent. */ + u16_t mss; /**< Current maximum segment size for the + connection. */ + u16_t initialmss; /**< Initial maximum segment size for the + connection. */ + u8_t sa; /**< Retransmission time-out calculation state + variable. */ + u8_t sv; /**< Retransmission time-out calculation state + variable. */ + u8_t rto; /**< Retransmission time-out. */ + u8_t tcpstateflags; /**< TCP state and flags. */ + u8_t timer; /**< The retransmission timer. */ + u8_t nrtx; /**< The number of retransmissions for the last + segment sent. */ + + /** The application state. */ + uip_tcp_appstate_t appstate; +}; + + +/** + * Pointer to the current TCP connection. + * + * The uip_conn pointer can be used to access the current TCP + * connection. + */ +extern struct uip_conn *uip_conn; +/* The array containing all uIP connections. */ +extern struct uip_conn uip_conns[UIP_CONNS]; +/** + * \addtogroup uiparch + * @{ + */ + +/** + * 4-byte array used for the 32-bit sequence number calculations. + */ +extern u8_t uip_acc32[4]; + +/** @} */ + + +#if UIP_UDP +/** + * Representation of a uIP UDP connection. + */ +struct uip_udp_conn { + uip_ipaddr_t ripaddr; /**< The IP address of the remote peer. */ + u16_t lport; /**< The local port number in network byte order. */ + u16_t rport; /**< The remote port number in network byte order. */ + u8_t ttl; /**< Default time-to-live. */ + + /** The application state. */ + uip_udp_appstate_t appstate; +}; + +/** + * The current UDP connection. + */ +extern struct uip_udp_conn *uip_udp_conn; +extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS]; +#endif /* UIP_UDP */ + +/** + * The structure holding the TCP/IP statistics that are gathered if + * UIP_STATISTICS is set to 1. + * + */ +struct uip_stats { + struct { + uip_stats_t drop; /**< Number of dropped packets at the IP + layer. */ + uip_stats_t recv; /**< Number of received packets at the IP + layer. */ + uip_stats_t sent; /**< Number of sent packets at the IP + layer. */ + uip_stats_t vhlerr; /**< Number of packets dropped due to wrong + IP version or header length. */ + uip_stats_t hblenerr; /**< Number of packets dropped due to wrong + IP length, high byte. */ + uip_stats_t lblenerr; /**< Number of packets dropped due to wrong + IP length, low byte. */ + uip_stats_t fragerr; /**< Number of packets dropped since they + were IP fragments. */ + uip_stats_t chkerr; /**< Number of packets dropped due to IP + checksum errors. */ + uip_stats_t protoerr; /**< Number of packets dropped since they + were neither ICMP, UDP nor TCP. */ + } ip; /**< IP statistics. */ + struct { + uip_stats_t drop; /**< Number of dropped ICMP packets. */ + uip_stats_t recv; /**< Number of received ICMP packets. */ + uip_stats_t sent; /**< Number of sent ICMP packets. */ + uip_stats_t typeerr; /**< Number of ICMP packets with a wrong + type. */ + } icmp; /**< ICMP statistics. */ + struct { + uip_stats_t drop; /**< Number of dropped TCP segments. */ + uip_stats_t recv; /**< Number of recived TCP segments. */ + uip_stats_t sent; /**< Number of sent TCP segments. */ + uip_stats_t chkerr; /**< Number of TCP segments with a bad + checksum. */ + uip_stats_t ackerr; /**< Number of TCP segments with a bad ACK + number. */ + uip_stats_t rst; /**< Number of recevied TCP RST (reset) segments. */ + uip_stats_t rexmit; /**< Number of retransmitted TCP segments. */ + uip_stats_t syndrop; /**< Number of dropped SYNs due to too few + connections was avaliable. */ + uip_stats_t synrst; /**< Number of SYNs for closed ports, + triggering a RST. */ + } tcp; /**< TCP statistics. */ +#if UIP_UDP + struct { + uip_stats_t drop; /**< Number of dropped UDP segments. */ + uip_stats_t recv; /**< Number of recived UDP segments. */ + uip_stats_t sent; /**< Number of sent UDP segments. */ + uip_stats_t chkerr; /**< Number of UDP segments with a bad + checksum. */ + } udp; /**< UDP statistics. */ +#endif /* UIP_UDP */ +}; + +/** + * The uIP TCP/IP statistics. + * + * This is the variable in which the uIP TCP/IP statistics are gathered. + */ +extern struct uip_stats uip_stat; + + +/*---------------------------------------------------------------------------*/ +/* All the stuff below this point is internal to uIP and should not be + * used directly by an application or by a device driver. + */ +/*---------------------------------------------------------------------------*/ +/* u8_t uip_flags: + * + * When the application is called, uip_flags will contain the flags + * that are defined in this file. Please read below for more + * infomation. + */ +extern u8_t uip_flags; + +/* The following flags may be set in the global variable uip_flags + before calling the application callback. The UIP_ACKDATA, + UIP_NEWDATA, and UIP_CLOSE flags may both be set at the same time, + whereas the others are mutualy exclusive. Note that these flags + should *NOT* be accessed directly, but only through the uIP + functions/macros. */ + +#define UIP_ACKDATA 1 /* Signifies that the outstanding data was + acked and the application should send + out new data instead of retransmitting + the last data. */ +#define UIP_NEWDATA 2 /* Flags the fact that the peer has sent + us new data. */ +#define UIP_REXMIT 4 /* Tells the application to retransmit the + data that was last sent. */ +#define UIP_POLL 8 /* Used for polling the application, to + check if the application has data that + it wants to send. */ +#define UIP_CLOSE 16 /* The remote host has closed the + connection, thus the connection has + gone away. Or the application signals + that it wants to close the + connection. */ +#define UIP_ABORT 32 /* The remote host has aborted the + connection, thus the connection has + gone away. Or the application signals + that it wants to abort the + connection. */ +#define UIP_CONNECTED 64 /* We have got a connection from a remote + host and have set up a new connection + for it, or an active connection has + been successfully established. */ + +#define UIP_TIMEDOUT 128 /* The connection has been aborted due to + too many retransmissions. */ + +/* uip_process(flag): + * + * The actual uIP function which does all the work. + */ +void uip_process(u8_t flag); + +/* The following flags are passed as an argument to the uip_process() + function. They are used to distinguish between the two cases where + uip_process() is called. It can be called either because we have + incoming data that should be processed, or because the periodic + timer has fired. These values are never used directly, but only in + the macrose defined in this file. */ + +#define UIP_DATA 1 /* Tells uIP that there is incoming + data in the uip_buf buffer. The + length of the data is stored in the + global variable uip_len. */ +#define UIP_TIMER 2 /* Tells uIP that the periodic timer + has fired. */ +#define UIP_POLL_REQUEST 3 /* Tells uIP that a connection should + be polled. */ +#define UIP_UDP_SEND_CONN 4 /* Tells uIP that a UDP datagram + should be constructed in the + uip_buf buffer. */ +#if UIP_UDP +#define UIP_UDP_TIMER 5 +#endif /* UIP_UDP */ + +/* The TCP states used in the uip_conn->tcpstateflags. */ +#define UIP_CLOSED 0 +#define UIP_SYN_RCVD 1 +#define UIP_SYN_SENT 2 +#define UIP_ESTABLISHED 3 +#define UIP_FIN_WAIT_1 4 +#define UIP_FIN_WAIT_2 5 +#define UIP_CLOSING 6 +#define UIP_TIME_WAIT 7 +#define UIP_LAST_ACK 8 +#define UIP_TS_MASK 15 + +#define UIP_STOPPED 16 + +/* The TCP and IP headers. */ +struct uip_tcpip_hdr { +#if UIP_CONF_IPV6 + /* IPv6 header. */ + u8_t vtc, + tcflow; + u16_t flow; + u8_t len[2]; + u8_t proto, ttl; + uip_ip6addr_t srcipaddr, destipaddr; +#else /* UIP_CONF_IPV6 */ + /* IPv4 header. */ + u8_t vhl, + tos, + len[2], + ipid[2], + ipoffset[2], + ttl, + proto; + u16_t ipchksum; + u16_t srcipaddr[2], + destipaddr[2]; +#endif /* UIP_CONF_IPV6 */ + + /* TCP header. */ + u16_t srcport, + destport; + u8_t seqno[4], + ackno[4], + tcpoffset, + flags, + wnd[2]; + u16_t tcpchksum; + u8_t urgp[2]; + u8_t optdata[4]; +}; + +/* The ICMP and IP headers. */ +struct uip_icmpip_hdr { +#if UIP_CONF_IPV6 + /* IPv6 header. */ + u8_t vtc, + tcf; + u16_t flow; + u8_t len[2]; + u8_t proto, ttl; + uip_ip6addr_t srcipaddr, destipaddr; +#else /* UIP_CONF_IPV6 */ + /* IPv4 header. */ + u8_t vhl, + tos, + len[2], + ipid[2], + ipoffset[2], + ttl, + proto; + u16_t ipchksum; + u16_t srcipaddr[2], + destipaddr[2]; +#endif /* UIP_CONF_IPV6 */ + + /* ICMP (echo) header. */ + u8_t type, icode; + u16_t icmpchksum; +#if !UIP_CONF_IPV6 + u16_t id, seqno; +#else /* !UIP_CONF_IPV6 */ + u8_t flags, reserved1, reserved2, reserved3; + u8_t icmp6data[16]; + u8_t options[1]; +#endif /* !UIP_CONF_IPV6 */ +}; + + +/* The UDP and IP headers. */ +struct uip_udpip_hdr { +#if UIP_CONF_IPV6 + /* IPv6 header. */ + u8_t vtc, + tcf; + u16_t flow; + u8_t len[2]; + u8_t proto, ttl; + uip_ip6addr_t srcipaddr, destipaddr; +#else /* UIP_CONF_IPV6 */ + /* IP header. */ + u8_t vhl, + tos, + len[2], + ipid[2], + ipoffset[2], + ttl, + proto; + u16_t ipchksum; + u16_t srcipaddr[2], + destipaddr[2]; +#endif /* UIP_CONF_IPV6 */ + + /* UDP header. */ + u16_t srcport, + destport; + u16_t udplen; + u16_t udpchksum; +}; + + + +/** + * The buffer size available for user data in the \ref uip_buf buffer. + * + * This macro holds the available size for user data in the \ref + * uip_buf buffer. The macro is intended to be used for checking + * bounds of available user data. + * + * Example: + \code + snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i); + \endcode + * + * \hideinitializer + */ +#define UIP_APPDATA_SIZE (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN) + + +#define UIP_PROTO_ICMP 1 +#define UIP_PROTO_TCP 6 +#define UIP_PROTO_UDP 17 +#define UIP_PROTO_ICMP6 58 + +/* Header sizes. */ +#if UIP_CONF_IPV6 +#define UIP_IPH_LEN 40 +#else /* UIP_CONF_IPV6 */ +#define UIP_IPH_LEN 20 /* Size of IP header */ +#endif /* UIP_CONF_IPV6 */ +#define UIP_UDPH_LEN 8 /* Size of UDP header */ +#define UIP_TCPH_LEN 20 /* Size of TCP header */ +#define UIP_IPUDPH_LEN (UIP_UDPH_LEN + UIP_IPH_LEN) /* Size of IP + + UDP + header */ +#define UIP_IPTCPH_LEN (UIP_TCPH_LEN + UIP_IPH_LEN) /* Size of IP + + TCP + header */ +#define UIP_TCPIP_HLEN UIP_IPTCPH_LEN + + +#if UIP_FIXEDADDR +extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr; +#else /* UIP_FIXEDADDR */ +extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr; +#endif /* UIP_FIXEDADDR */ + + + +/** + * Representation of a 48-bit Ethernet address. + */ +struct uip_eth_addr { + u8_t addr[6]; +}; + +/** + * Calculate the Internet checksum over a buffer. + * + * The Internet checksum is the one's complement of the one's + * complement sum of all 16-bit words in the buffer. + * + * See RFC1071. + * + * \param buf A pointer to the buffer over which the checksum is to be + * computed. + * + * \param len The length of the buffer over which the checksum is to + * be computed. + * + * \return The Internet checksum of the buffer. + */ +u16_t uip_chksum(u16_t *buf, u16_t len); + +/** + * Calculate the IP header checksum of the packet header in uip_buf. + * + * The IP header checksum is the Internet checksum of the 20 bytes of + * the IP header. + * + * \return The IP header checksum of the IP header in the uip_buf + * buffer. + */ +u16_t uip_ipchksum(void); + +/** + * Calculate the TCP checksum of the packet in uip_buf and uip_appdata. + * + * The TCP checksum is the Internet checksum of data contents of the + * TCP segment, and a pseudo-header as defined in RFC793. + * + * \return The TCP checksum of the TCP segment in uip_buf and pointed + * to by uip_appdata. + */ +u16_t uip_tcpchksum(void); + +/** + * Calculate the UDP checksum of the packet in uip_buf and uip_appdata. + * + * The UDP checksum is the Internet checksum of data contents of the + * UDP segment, and a pseudo-header as defined in RFC768. + * + * \return The UDP checksum of the UDP segment in uip_buf and pointed + * to by uip_appdata. + */ +u16_t uip_udpchksum(void); + + +#endif /* __UIP_H__ */ + + +/** @} */ diff --git a/uip/uip/uip_arch.h b/uip/uip/uip_arch.h new file mode 100644 index 0000000..71fd84b --- /dev/null +++ b/uip/uip/uip_arch.h @@ -0,0 +1,138 @@ +/** + * \addtogroup uip + * {@ + */ + +/** + * \defgroup uiparch Architecture specific uIP functions + * @{ + * + * The functions in the architecture specific module implement the IP + * check sum and 32-bit additions. + * + * The IP checksum calculation is the most computationally expensive + * operation in the TCP/IP stack and it therefore pays off to + * implement this in efficient assembler. The purpose of the uip-arch + * module is to let the checksum functions to be implemented in + * architecture specific assembler. + * + */ + +/** + * \file + * Declarations of architecture specific functions. + * \author Adam Dunkels <adam@dunkels.com> + */ + +/* + * Copyright (c) 2001, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: uip_arch.h,v 1.2 2006/06/07 09:15:19 adam Exp $ + * + */ + +#ifndef __UIP_ARCH_H__ +#define __UIP_ARCH_H__ + +#include "uip.h" + +/** + * Carry out a 32-bit addition. + * + * Because not all architectures for which uIP is intended has native + * 32-bit arithmetic, uIP uses an external C function for doing the + * required 32-bit additions in the TCP protocol processing. This + * function should add the two arguments and place the result in the + * global variable uip_acc32. + * + * \note The 32-bit integer pointed to by the op32 parameter and the + * result in the uip_acc32 variable are in network byte order (big + * endian). + * + * \param op32 A pointer to a 4-byte array representing a 32-bit + * integer in network byte order (big endian). + * + * \param op16 A 16-bit integer in host byte order. + */ +void uip_add32(u8_t *op32, u16_t op16); + +/** + * Calculate the Internet checksum over a buffer. + * + * The Internet checksum is the one's complement of the one's + * complement sum of all 16-bit words in the buffer. + * + * See RFC1071. + * + * \note This function is not called in the current version of uIP, + * but future versions might make use of it. + * + * \param buf A pointer to the buffer over which the checksum is to be + * computed. + * + * \param len The length of the buffer over which the checksum is to + * be computed. + * + * \return The Internet checksum of the buffer. + */ +u16_t uip_chksum(u16_t *buf, u16_t len); + +/** + * Calculate the IP header checksum of the packet header in uip_buf. + * + * The IP header checksum is the Internet checksum of the 20 bytes of + * the IP header. + * + * \return The IP header checksum of the IP header in the uip_buf + * buffer. + */ +u16_t uip_ipchksum(void); + +/** + * Calculate the TCP checksum of the packet in uip_buf and uip_appdata. + * + * The TCP checksum is the Internet checksum of data contents of the + * TCP segment, and a pseudo-header as defined in RFC793. + * + * \note The uip_appdata pointer that points to the packet data may + * point anywhere in memory, so it is not possible to simply calculate + * the Internet checksum of the contents of the uip_buf buffer. + * + * \return The TCP checksum of the TCP segment in uip_buf and pointed + * to by uip_appdata. + */ +u16_t uip_tcpchksum(void); + +u16_t uip_udpchksum(void); + +/** @} */ +/** @} */ + +#endif /* __UIP_ARCH_H__ */ diff --git a/uip/uip/uip_arp.c b/uip/uip/uip_arp.c new file mode 100644 index 0000000..75ade64 --- /dev/null +++ b/uip/uip/uip_arp.c @@ -0,0 +1,423 @@ +/** + * \addtogroup uip + * @{ + */ + +/** + * \defgroup uiparp uIP Address Resolution Protocol + * @{ + * + * The Address Resolution Protocol ARP is used for mapping between IP + * addresses and link level addresses such as the Ethernet MAC + * addresses. ARP uses broadcast queries to ask for the link level + * address of a known IP address and the host which is configured with + * the IP address for which the query was meant, will respond with its + * link level address. + * + * \note This ARP implementation only supports Ethernet. + */ + +/** + * \file + * Implementation of the ARP Address Resolution Protocol. + * \author Adam Dunkels <adam@dunkels.com> + * + */ + +/* + * Copyright (c) 2001-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: uip_arp.c,v 1.8 2006/06/02 23:36:21 adam Exp $ + * + */ + + +#include "uip_arp.h" + +#include <string.h> + +struct arp_hdr { + struct uip_eth_hdr ethhdr; + u16_t hwtype; + u16_t protocol; + u8_t hwlen; + u8_t protolen; + u16_t opcode; + struct uip_eth_addr shwaddr; + u16_t sipaddr[2]; + struct uip_eth_addr dhwaddr; + u16_t dipaddr[2]; +}; + +struct ethip_hdr { + struct uip_eth_hdr ethhdr; + /* IP header. */ + u8_t vhl, + tos, + len[2], + ipid[2], + ipoffset[2], + ttl, + proto; + u16_t ipchksum; + u16_t srcipaddr[2], + destipaddr[2]; +}; + +#define ARP_REQUEST 1 +#define ARP_REPLY 2 + +#define ARP_HWTYPE_ETH 1 + +struct arp_entry { + u16_t ipaddr[2]; + struct uip_eth_addr ethaddr; + u8_t time; +}; + +static const struct uip_eth_addr broadcast_ethaddr = + {{0xff,0xff,0xff,0xff,0xff,0xff}}; +static const u16_t broadcast_ipaddr[2] = {0xffff,0xffff}; + +static struct arp_entry arp_table[UIP_ARPTAB_SIZE]; +static u16_t ipaddr[2]; +static u8_t i, c; + +static u8_t arptime; +static u8_t tmpage; + +#define BUF ((struct arp_hdr *)&uip_buf[0]) +#define IPBUF ((struct ethip_hdr *)&uip_buf[0]) +/*-----------------------------------------------------------------------------------*/ +/** + * Initialize the ARP module. + * + */ +/*-----------------------------------------------------------------------------------*/ +void +uip_arp_init(void) +{ + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) { + memset(arp_table[i].ipaddr, 0, 4); + } +} +/*-----------------------------------------------------------------------------------*/ +/** + * Periodic ARP processing function. + * + * This function performs periodic timer processing in the ARP module + * and should be called at regular intervals. The recommended interval + * is 10 seconds between the calls. + * + */ +/*-----------------------------------------------------------------------------------*/ +void +uip_arp_timer(void) +{ + struct arp_entry *tabptr; + + ++arptime; + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) { + tabptr = &arp_table[i]; + if((tabptr->ipaddr[0] | tabptr->ipaddr[1]) != 0 && + arptime - tabptr->time >= UIP_ARP_MAXAGE) { + memset(tabptr->ipaddr, 0, 4); + } + } + +} +/*-----------------------------------------------------------------------------------*/ +static void +uip_arp_update(u16_t *ipaddr, struct uip_eth_addr *ethaddr) +{ + register struct arp_entry *tabptr; + /* Walk through the ARP mapping table and try to find an entry to + update. If none is found, the IP -> MAC address mapping is + inserted in the ARP table. */ + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) { + + tabptr = &arp_table[i]; + /* Only check those entries that are actually in use. */ + if(tabptr->ipaddr[0] != 0 && + tabptr->ipaddr[1] != 0) { + + /* Check if the source IP address of the incoming packet matches + the IP address in this ARP table entry. */ + if(ipaddr[0] == tabptr->ipaddr[0] && + ipaddr[1] == tabptr->ipaddr[1]) { + + /* An old entry found, update this and return. */ + memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6); + tabptr->time = arptime; + + return; + } + } + } + + /* If we get here, no existing ARP table entry was found, so we + create one. */ + + /* First, we try to find an unused entry in the ARP table. */ + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) { + tabptr = &arp_table[i]; + if(tabptr->ipaddr[0] == 0 && + tabptr->ipaddr[1] == 0) { + break; + } + } + + /* If no unused entry is found, we try to find the oldest entry and + throw it away. */ + if(i == UIP_ARPTAB_SIZE) { + tmpage = 0; + c = 0; + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) { + tabptr = &arp_table[i]; + if(arptime - tabptr->time > tmpage) { + tmpage = arptime - tabptr->time; + c = i; + } + } + i = c; + tabptr = &arp_table[i]; + } + + /* Now, i is the ARP table entry which we will fill with the new + information. */ + memcpy(tabptr->ipaddr, ipaddr, 4); + memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6); + tabptr->time = arptime; +} +/*-----------------------------------------------------------------------------------*/ +/** + * ARP processing for incoming IP packets + * + * This function should be called by the device driver when an IP + * packet has been received. The function will check if the address is + * in the ARP cache, and if so the ARP cache entry will be + * refreshed. If no ARP cache entry was found, a new one is created. + * + * This function expects an IP packet with a prepended Ethernet header + * in the uip_buf[] buffer, and the length of the packet in the global + * variable uip_len. + */ +/*-----------------------------------------------------------------------------------*/ +#if 0 +void +uip_arp_ipin(void) +{ + uip_len -= sizeof(struct uip_eth_hdr); + + /* Only insert/update an entry if the source IP address of the + incoming IP packet comes from a host on the local network. */ + if((IPBUF->srcipaddr[0] & uip_netmask[0]) != + (uip_hostaddr[0] & uip_netmask[0])) { + return; + } + if((IPBUF->srcipaddr[1] & uip_netmask[1]) != + (uip_hostaddr[1] & uip_netmask[1])) { + return; + } + uip_arp_update(IPBUF->srcipaddr, &(IPBUF->ethhdr.src)); + + return; +} +#endif /* 0 */ +/*-----------------------------------------------------------------------------------*/ +/** + * ARP processing for incoming ARP packets. + * + * This function should be called by the device driver when an ARP + * packet has been received. The function will act differently + * depending on the ARP packet type: if it is a reply for a request + * that we previously sent out, the ARP cache will be filled in with + * the values from the ARP reply. If the incoming ARP packet is an ARP + * request for our IP address, an ARP reply packet is created and put + * into the uip_buf[] buffer. + * + * When the function returns, the value of the global variable uip_len + * indicates whether the device driver should send out a packet or + * not. If uip_len is zero, no packet should be sent. If uip_len is + * non-zero, it contains the length of the outbound packet that is + * present in the uip_buf[] buffer. + * + * This function expects an ARP packet with a prepended Ethernet + * header in the uip_buf[] buffer, and the length of the packet in the + * global variable uip_len. + */ +/*-----------------------------------------------------------------------------------*/ +void +uip_arp_arpin(void) +{ + + if(uip_len < sizeof(struct arp_hdr)) { + uip_len = 0; + return; + } + uip_len = 0; + + switch(BUF->opcode) { + case HTONS(ARP_REQUEST): + /* ARP request. If it asked for our address, we send out a + reply. */ + if(uip_ipaddr_cmp(BUF->dipaddr, uip_hostaddr)) { + /* First, we register the one who made the request in our ARP + table, since it is likely that we will do more communication + with this host in the future. */ + uip_arp_update(BUF->sipaddr, &BUF->shwaddr); + + /* The reply opcode is 2. */ + BUF->opcode = HTONS(2); + + memcpy(BUF->dhwaddr.addr, BUF->shwaddr.addr, 6); + memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6); + memcpy(BUF->ethhdr.src.addr, uip_ethaddr.addr, 6); + memcpy(BUF->ethhdr.dest.addr, BUF->dhwaddr.addr, 6); + + BUF->dipaddr[0] = BUF->sipaddr[0]; + BUF->dipaddr[1] = BUF->sipaddr[1]; + BUF->sipaddr[0] = uip_hostaddr[0]; + BUF->sipaddr[1] = uip_hostaddr[1]; + + BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP); + uip_len = sizeof(struct arp_hdr); + } + break; + case HTONS(ARP_REPLY): + /* ARP reply. We insert or update the ARP table if it was meant + for us. */ + if(uip_ipaddr_cmp(BUF->dipaddr, uip_hostaddr)) { + uip_arp_update(BUF->sipaddr, &BUF->shwaddr); + } + break; + } + + return; +} +/*-----------------------------------------------------------------------------------*/ +/** + * Prepend Ethernet header to an outbound IP packet and see if we need + * to send out an ARP request. + * + * This function should be called before sending out an IP packet. The + * function checks the destination IP address of the IP packet to see + * what Ethernet MAC address that should be used as a destination MAC + * address on the Ethernet. + * + * If the destination IP address is in the local network (determined + * by logical ANDing of netmask and our IP address), the function + * checks the ARP cache to see if an entry for the destination IP + * address is found. If so, an Ethernet header is prepended and the + * function returns. If no ARP cache entry is found for the + * destination IP address, the packet in the uip_buf[] is replaced by + * an ARP request packet for the IP address. The IP packet is dropped + * and it is assumed that they higher level protocols (e.g., TCP) + * eventually will retransmit the dropped packet. + * + * If the destination IP address is not on the local network, the IP + * address of the default router is used instead. + * + * When the function returns, a packet is present in the uip_buf[] + * buffer, and the length of the packet is in the global variable + * uip_len. + */ +/*-----------------------------------------------------------------------------------*/ +void +uip_arp_out(void) +{ + struct arp_entry *tabptr; + + /* Find the destination IP address in the ARP table and construct + the Ethernet header. If the destination IP addres isn't on the + local network, we use the default router's IP address instead. + + If not ARP table entry is found, we overwrite the original IP + packet with an ARP request for the IP address. */ + + /* First check if destination is a local broadcast. */ + if(uip_ipaddr_cmp(IPBUF->destipaddr, broadcast_ipaddr)) { + memcpy(IPBUF->ethhdr.dest.addr, broadcast_ethaddr.addr, 6); + } else { + /* Check if the destination address is on the local network. */ + if(!uip_ipaddr_maskcmp(IPBUF->destipaddr, uip_hostaddr, uip_netmask)) { + /* Destination address was not on the local network, so we need to + use the default router's IP address instead of the destination + address when determining the MAC address. */ + uip_ipaddr_copy(ipaddr, uip_draddr); + } else { + /* Else, we use the destination IP address. */ + uip_ipaddr_copy(ipaddr, IPBUF->destipaddr); + } + + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) { + tabptr = &arp_table[i]; + if(uip_ipaddr_cmp(ipaddr, tabptr->ipaddr)) { + break; + } + } + + if(i == UIP_ARPTAB_SIZE) { + /* The destination address was not in our ARP table, so we + overwrite the IP packet with an ARP request. */ + + memset(BUF->ethhdr.dest.addr, 0xff, 6); + memset(BUF->dhwaddr.addr, 0x00, 6); + memcpy(BUF->ethhdr.src.addr, uip_ethaddr.addr, 6); + memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6); + + uip_ipaddr_copy(BUF->dipaddr, ipaddr); + uip_ipaddr_copy(BUF->sipaddr, uip_hostaddr); + BUF->opcode = HTONS(ARP_REQUEST); /* ARP request. */ + BUF->hwtype = HTONS(ARP_HWTYPE_ETH); + BUF->protocol = HTONS(UIP_ETHTYPE_IP); + BUF->hwlen = 6; + BUF->protolen = 4; + BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP); + + uip_appdata = &uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN]; + + uip_len = sizeof(struct arp_hdr); + return; + } + + /* Build an ethernet header. */ + memcpy(IPBUF->ethhdr.dest.addr, tabptr->ethaddr.addr, 6); + } + memcpy(IPBUF->ethhdr.src.addr, uip_ethaddr.addr, 6); + + IPBUF->ethhdr.type = HTONS(UIP_ETHTYPE_IP); + + uip_len += sizeof(struct uip_eth_hdr); +} +/*-----------------------------------------------------------------------------------*/ + +/** @} */ +/** @} */ diff --git a/uip/uip/uip_arp.h b/uip/uip/uip_arp.h new file mode 100644 index 0000000..e32594d --- /dev/null +++ b/uip/uip/uip_arp.h @@ -0,0 +1,144 @@ +/** + * \addtogroup uip + * @{ + */ + +/** + * \addtogroup uiparp + * @{ + */ + +/** + * \file + * Macros and definitions for the ARP module. + * \author Adam Dunkels <adam@dunkels.com> + */ + + +/* + * Copyright (c) 2001-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: uip_arp.h,v 1.5 2006/06/11 21:46:39 adam Exp $ + * + */ + +#ifndef __UIP_ARP_H__ +#define __UIP_ARP_H__ + +#include "uip.h" + + +extern struct uip_eth_addr uip_ethaddr; + +/** + * The Ethernet header. + */ +struct uip_eth_hdr { + struct uip_eth_addr dest; + struct uip_eth_addr src; + u16_t type; +}; + +#define UIP_ETHTYPE_ARP 0x0806 +#define UIP_ETHTYPE_IP 0x0800 +#define UIP_ETHTYPE_IP6 0x86dd + + +/* The uip_arp_init() function must be called before any of the other + ARP functions. */ +void uip_arp_init(void); + +/* The uip_arp_ipin() function should be called whenever an IP packet + arrives from the Ethernet. This function refreshes the ARP table or + inserts a new mapping if none exists. The function assumes that an + IP packet with an Ethernet header is present in the uip_buf buffer + and that the length of the packet is in the uip_len variable. */ +/*void uip_arp_ipin(void);*/ +#define uip_arp_ipin() + +/* The uip_arp_arpin() should be called when an ARP packet is received + by the Ethernet driver. This function also assumes that the + Ethernet frame is present in the uip_buf buffer. When the + uip_arp_arpin() function returns, the contents of the uip_buf + buffer should be sent out on the Ethernet if the uip_len variable + is > 0. */ +void uip_arp_arpin(void); + +/* The uip_arp_out() function should be called when an IP packet + should be sent out on the Ethernet. This function creates an + Ethernet header before the IP header in the uip_buf buffer. The + Ethernet header will have the correct Ethernet MAC destination + address filled in if an ARP table entry for the destination IP + address (or the IP address of the default router) is present. If no + such table entry is found, the IP packet is overwritten with an ARP + request and we rely on TCP to retransmit the packet that was + overwritten. In any case, the uip_len variable holds the length of + the Ethernet frame that should be transmitted. */ +void uip_arp_out(void); + +/* The uip_arp_timer() function should be called every ten seconds. It + is responsible for flushing old entries in the ARP table. */ +void uip_arp_timer(void); + +/** @} */ + +/** + * \addtogroup uipconffunc + * @{ + */ + + +/** + * Specifiy the Ethernet MAC address. + * + * The ARP code needs to know the MAC address of the Ethernet card in + * order to be able to respond to ARP queries and to generate working + * Ethernet headers. + * + * \note This macro only specifies the Ethernet MAC address to the ARP + * code. It cannot be used to change the MAC address of the Ethernet + * card. + * + * \param eaddr A pointer to a struct uip_eth_addr containing the + * Ethernet MAC address of the Ethernet card. + * + * \hideinitializer + */ +#define uip_setethaddr(eaddr) do {uip_ethaddr.addr[0] = eaddr.addr[0]; \ + uip_ethaddr.addr[1] = eaddr.addr[1];\ + uip_ethaddr.addr[2] = eaddr.addr[2];\ + uip_ethaddr.addr[3] = eaddr.addr[3];\ + uip_ethaddr.addr[4] = eaddr.addr[4];\ + uip_ethaddr.addr[5] = eaddr.addr[5];} while(0) + +/** @} */ +/** @} */ + +#endif /* __UIP_ARP_H__ */ diff --git a/uip/uip/uiplib.c b/uip/uip/uiplib.c new file mode 100644 index 0000000..cb5af2c --- /dev/null +++ b/uip/uip/uiplib.c @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2004, Adam Dunkels and the Swedish Institute of + * Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: uiplib.c,v 1.2 2006/06/12 08:00:31 adam Exp $ + * + */ + + +#include "uip.h" +#include "uiplib.h" + + +/*-----------------------------------------------------------------------------------*/ +unsigned char +uiplib_ipaddrconv(char *addrstr, unsigned char *ipaddr) +{ + unsigned char tmp; + char c; + unsigned char i, j; + + tmp = 0; + + for(i = 0; i < 4; ++i) { + j = 0; + do { + c = *addrstr; + ++j; + if(j > 4) { + return 0; + } + if(c == '.' || c == 0) { + *ipaddr = tmp; + ++ipaddr; + tmp = 0; + } else if(c >= '0' && c <= '9') { + tmp = (tmp * 10) + (c - '0'); + } else { + return 0; + } + ++addrstr; + } while(c != '.' && c != 0); + } + return 1; +} + +/*-----------------------------------------------------------------------------------*/ diff --git a/uip/uip/uiplib.h b/uip/uip/uiplib.h new file mode 100644 index 0000000..c676849 --- /dev/null +++ b/uip/uip/uiplib.h @@ -0,0 +1,71 @@ +/** + * \file + * Various uIP library functions. + * \author + * Adam Dunkels <adam@sics.se> + * + */ + +/* + * Copyright (c) 2002, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: uiplib.h,v 1.1 2006/06/07 09:15:19 adam Exp $ + * + */ +#ifndef __UIPLIB_H__ +#define __UIPLIB_H__ + +/** + * \addtogroup uipconvfunc + * @{ + */ + +/** + * Convert a textual representation of an IP address to a numerical representation. + * + * This function takes a textual representation of an IP address in + * the form a.b.c.d and converts it into a 4-byte array that can be + * used by other uIP functions. + * + * \param addrstr A pointer to a string containing the IP address in + * textual form. + * + * \param addr A pointer to a 4-byte array that will be filled in with + * the numerical representation of the address. + * + * \retval 0 If the IP address could not be parsed. + * \retval Non-zero If the IP address was parsed. + */ +unsigned char uiplib_ipaddrconv(char *addrstr, unsigned char *addr); + +/** @} */ + +#endif /* __UIPLIB_H__ */ diff --git a/uip/uip/uipopt.h b/uip/uip/uipopt.h new file mode 100644 index 0000000..8feabf6 --- /dev/null +++ b/uip/uip/uipopt.h @@ -0,0 +1,544 @@ +/** + * \defgroup uipopt Configuration options for uIP + * @{ + * + * uIP is configured using the per-project configuration file + * uipopt.h. This file contains all compile-time options for uIP and + * should be tweaked to match each specific project. The uIP + * distribution contains a documented example "uipopt.h" that can be + * copied and modified for each project. + * + * \note Most of the configuration options in the uipopt.h should not + * be changed, but rather the per-project uip-conf.h file. + */ + +/** + * \file + * Configuration options for uIP. + * \author Adam Dunkels <adam@dunkels.com> + * + * This file is used for tweaking various configuration options for + * uIP. You should make a copy of this file into one of your project's + * directories instead of editing this example "uipopt.h" file that + * comes with the uIP distribution. + */ + +/* + * Copyright (c) 2001-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: uipopt.h,v 1.4 2006/06/12 08:00:31 adam Exp $ + * + */ + +#ifndef __UIPOPT_H__ +#define __UIPOPT_H__ + +#ifndef UIP_LITTLE_ENDIAN +#define UIP_LITTLE_ENDIAN 3412 +#endif /* UIP_LITTLE_ENDIAN */ +#ifndef UIP_BIG_ENDIAN +#define UIP_BIG_ENDIAN 1234 +#endif /* UIP_BIG_ENDIAN */ + +#include "uip-conf.h" + +/*------------------------------------------------------------------------------*/ + +/** + * \name Static configuration options + * @{ + * + * These configuration options can be used for setting the IP address + * settings statically, but only if UIP_FIXEDADDR is set to 1. The + * configuration options for a specific node includes IP address, + * netmask and default router as well as the Ethernet address. The + * netmask, default router and Ethernet address are appliciable only + * if uIP should be run over Ethernet. + * + * All of these should be changed to suit your project. +*/ + +/** + * Determines if uIP should use a fixed IP address or not. + * + * If uIP should use a fixed IP address, the settings are set in the + * uipopt.h file. If not, the macros uip_sethostaddr(), + * uip_setdraddr() and uip_setnetmask() should be used instead. + * + * \hideinitializer + */ +#define UIP_FIXEDADDR 0 + +/** + * Ping IP address asignment. + * + * uIP uses a "ping" packets for setting its own IP address if this + * option is set. If so, uIP will start with an empty IP address and + * the destination IP address of the first incoming "ping" (ICMP echo) + * packet will be used for setting the hosts IP address. + * + * \note This works only if UIP_FIXEDADDR is 0. + * + * \hideinitializer + */ +#ifdef UIP_CONF_PINGADDRCONF +#define UIP_PINGADDRCONF UIP_CONF_PINGADDRCONF +#else /* UIP_CONF_PINGADDRCONF */ +#define UIP_PINGADDRCONF 0 +#endif /* UIP_CONF_PINGADDRCONF */ + + +/** + * Specifies if the uIP ARP module should be compiled with a fixed + * Ethernet MAC address or not. + * + * If this configuration option is 0, the macro uip_setethaddr() can + * be used to specify the Ethernet address at run-time. + * + * \hideinitializer + */ +#define UIP_FIXEDETHADDR 0 + +/** @} */ +/*------------------------------------------------------------------------------*/ +/** + * \name IP configuration options + * @{ + * + */ +/** + * The IP TTL (time to live) of IP packets sent by uIP. + * + * This should normally not be changed. + */ +#define UIP_TTL 64 + +/** + * Turn on support for IP packet reassembly. + * + * uIP supports reassembly of fragmented IP packets. This features + * requires an additonal amount of RAM to hold the reassembly buffer + * and the reassembly code size is approximately 700 bytes. The + * reassembly buffer is of the same size as the uip_buf buffer + * (configured by UIP_BUFSIZE). + * + * \note IP packet reassembly is not heavily tested. + * + * \hideinitializer + */ +#define UIP_REASSEMBLY 0 + +/** + * The maximum time an IP fragment should wait in the reassembly + * buffer before it is dropped. + * + */ +#define UIP_REASS_MAXAGE 40 + +/** @} */ + +/*------------------------------------------------------------------------------*/ +/** + * \name UDP configuration options + * @{ + */ + +/** + * Toggles wether UDP support should be compiled in or not. + * + * \hideinitializer + */ +#ifdef UIP_CONF_UDP +#define UIP_UDP UIP_CONF_UDP +#else /* UIP_CONF_UDP */ +#define UIP_UDP 0 +#endif /* UIP_CONF_UDP */ + +/** + * Toggles if UDP checksums should be used or not. + * + * \note Support for UDP checksums is currently not included in uIP, + * so this option has no function. + * + * \hideinitializer + */ +#ifdef UIP_CONF_UDP_CHECKSUMS +#define UIP_UDP_CHECKSUMS UIP_CONF_UDP_CHECKSUMS +#else +#define UIP_UDP_CHECKSUMS 0 +#endif + +/** + * The maximum amount of concurrent UDP connections. + * + * \hideinitializer + */ +#ifdef UIP_CONF_UDP_CONNS +#define UIP_UDP_CONNS UIP_CONF_UDP_CONNS +#else /* UIP_CONF_UDP_CONNS */ +#define UIP_UDP_CONNS 10 +#endif /* UIP_CONF_UDP_CONNS */ + +/** + * The name of the function that should be called when UDP datagrams arrive. + * + * \hideinitializer + */ + + +/** @} */ +/*------------------------------------------------------------------------------*/ +/** + * \name TCP configuration options + * @{ + */ + +/** + * Determines if support for opening connections from uIP should be + * compiled in. + * + * If the applications that are running on top of uIP for this project + * do not need to open outgoing TCP connections, this configration + * option can be turned off to reduce the code size of uIP. + * + * \hideinitializer + */ +#define UIP_ACTIVE_OPEN 1 + +/** + * The maximum number of simultaneously open TCP connections. + * + * Since the TCP connections are statically allocated, turning this + * configuration knob down results in less RAM used. Each TCP + * connection requires approximatly 30 bytes of memory. + * + * \hideinitializer + */ +#ifndef UIP_CONF_MAX_CONNECTIONS +#define UIP_CONNS 10 +#else /* UIP_CONF_MAX_CONNECTIONS */ +#define UIP_CONNS UIP_CONF_MAX_CONNECTIONS +#endif /* UIP_CONF_MAX_CONNECTIONS */ + + +#ifdef UIP_CONF_TCP_LISTEN +#define UIP_TCP_LISTEN +#endif + +/** + * The maximum number of simultaneously listening TCP ports. + * + * Each listening TCP port requires 2 bytes of memory. + * + * \hideinitializer + */ +#ifndef UIP_CONF_MAX_LISTENPORTS +#define UIP_LISTENPORTS 20 +#else /* UIP_CONF_MAX_LISTENPORTS */ +#define UIP_LISTENPORTS UIP_CONF_MAX_LISTENPORTS +#endif /* UIP_CONF_MAX_LISTENPORTS */ + +/** + * Determines if support for TCP urgent data notification should be + * compiled in. + * + * Urgent data (out-of-band data) is a rarely used TCP feature that + * very seldom would be required. + * + * \hideinitializer + */ +#define UIP_URGDATA 0 + +/** + * The initial retransmission timeout counted in timer pulses. + * + * This should not be changed. + */ +#define UIP_RTO 3 + +/** + * The maximum number of times a segment should be retransmitted + * before the connection should be aborted. + * + * This should not be changed. + */ +#define UIP_MAXRTX 8 + +/** + * The maximum number of times a SYN segment should be retransmitted + * before a connection request should be deemed to have been + * unsuccessful. + * + * This should not need to be changed. + */ +#define UIP_MAXSYNRTX 5 + +/** + * The TCP maximum segment size. + * + * This is should not be to set to more than + * UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN. + */ +/* 20081115 bkw: edited */ +#define UIP_TCP_MSS (160 - UIP_LLH_LEN - UIP_TCPIP_HLEN) + +/** + * The size of the advertised receiver's window. + * + * Should be set low (i.e., to the size of the uip_buf buffer) is the + * application is slow to process incoming data, or high (32768 bytes) + * if the application processes data quickly. + * + * \hideinitializer + */ +#ifndef UIP_CONF_RECEIVE_WINDOW +#define UIP_RECEIVE_WINDOW UIP_TCP_MSS +#else +#define UIP_RECEIVE_WINDOW UIP_CONF_RECEIVE_WINDOW +#endif + +/** + * How long a connection should stay in the TIME_WAIT state. + * + * This configiration option has no real implication, and it should be + * left untouched. + */ +#define UIP_TIME_WAIT_TIMEOUT 120 + + +/** @} */ +/*------------------------------------------------------------------------------*/ +/** + * \name ARP configuration options + * @{ + */ + +/** + * The size of the ARP table. + * + * This option should be set to a larger value if this uIP node will + * have many connections from the local network. + * + * \hideinitializer + */ +#ifdef UIP_CONF_ARPTAB_SIZE +#define UIP_ARPTAB_SIZE UIP_CONF_ARPTAB_SIZE +#else +#define UIP_ARPTAB_SIZE 8 +#endif + +/** + * The maxium age of ARP table entries measured in 10ths of seconds. + * + * An UIP_ARP_MAXAGE of 120 corresponds to 20 minutes (BSD + * default). + */ +#define UIP_ARP_MAXAGE 120 + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \name General configuration options + * @{ + */ + +/** + * The size of the uIP packet buffer. + * + * The uIP packet buffer should not be smaller than 60 bytes, and does + * not need to be larger than 1500 bytes. Lower size results in lower + * TCP throughput, larger size results in higher TCP throughput. + * + * \hideinitializer + */ +#ifndef UIP_CONF_BUFFER_SIZE +#define UIP_BUFSIZE 400 +#else /* UIP_CONF_BUFFER_SIZE */ +#define UIP_BUFSIZE UIP_CONF_BUFFER_SIZE +#endif /* UIP_CONF_BUFFER_SIZE */ + + +/** + * Determines if statistics support should be compiled in. + * + * The statistics is useful for debugging and to show the user. + * + * \hideinitializer + */ +#ifndef UIP_CONF_STATISTICS +#define UIP_STATISTICS 0 +#else /* UIP_CONF_STATISTICS */ +#define UIP_STATISTICS UIP_CONF_STATISTICS +#endif /* UIP_CONF_STATISTICS */ + +/** + * Determines if logging of certain events should be compiled in. + * + * This is useful mostly for debugging. The function uip_log() + * must be implemented to suit the architecture of the project, if + * logging is turned on. + * + * \hideinitializer + */ +#ifndef UIP_CONF_LOGGING +#define UIP_LOGGING 0 +#else /* UIP_CONF_LOGGING */ +#define UIP_LOGGING UIP_CONF_LOGGING +#endif /* UIP_CONF_LOGGING */ + +/** + * Broadcast support. + * + * This flag configures IP broadcast support. This is useful only + * together with UDP. + * + * \hideinitializer + * + */ +#ifndef UIP_CONF_BROADCAST +#define UIP_BROADCAST 0 +#else /* UIP_CONF_BROADCAST */ +#define UIP_BROADCAST UIP_CONF_BROADCAST +#endif /* UIP_CONF_BROADCAST */ + +/** + * Print out a uIP log message. + * + * This function must be implemented by the module that uses uIP, and + * is called by uIP whenever a log message is generated. + */ +void uip_log(char *msg); + +/** + * The link level header length. + * + * This is the offset into the uip_buf where the IP header can be + * found. For Ethernet, this should be set to 14. For SLIP, this + * should be set to 0. + * + * \hideinitializer + */ +#ifdef UIP_CONF_LLH_LEN +#define UIP_LLH_LEN UIP_CONF_LLH_LEN +#else /* UIP_CONF_LLH_LEN */ +#define UIP_LLH_LEN 14 +#endif /* UIP_CONF_LLH_LEN */ + +/** @} */ +/*------------------------------------------------------------------------------*/ +/** + * \name CPU architecture configuration + * @{ + * + * The CPU architecture configuration is where the endianess of the + * CPU on which uIP is to be run is specified. Most CPUs today are + * little endian, and the most notable exception are the Motorolas + * which are big endian. The BYTE_ORDER macro should be changed to + * reflect the CPU architecture on which uIP is to be run. + */ + +/** + * The byte order of the CPU architecture on which uIP is to be run. + * + * This option can be either BIG_ENDIAN (Motorola byte order) or + * LITTLE_ENDIAN (Intel byte order). + * + * \hideinitializer + */ +#ifdef UIP_CONF_BYTE_ORDER +#define UIP_BYTE_ORDER UIP_CONF_BYTE_ORDER +#else /* UIP_CONF_BYTE_ORDER */ +#define UIP_BYTE_ORDER UIP_LITTLE_ENDIAN +#endif /* UIP_CONF_BYTE_ORDER */ + +/** @} */ +/*------------------------------------------------------------------------------*/ + +/** + * \name Appication specific configurations + * @{ + * + * An uIP application is implemented using a single application + * function that is called by uIP whenever a TCP/IP event occurs. The + * name of this function must be registered with uIP at compile time + * using the UIP_APPCALL definition. + * + * uIP applications can store the application state within the + * uip_conn structure by specifying the type of the application + * structure by typedef:ing the type uip_tcp_appstate_t and uip_udp_appstate_t. + * + * The file containing the definitions must be included in the + * uipopt.h file. + * + * The following example illustrates how this can look. + \code + +void httpd_appcall(void); +#define UIP_APPCALL httpd_appcall + +struct httpd_state { + u8_t state; + u16_t count; + char *dataptr; + char *script; +}; +typedef struct httpd_state uip_tcp_appstate_t + \endcode + */ + +/** + * \var #define UIP_APPCALL + * + * The name of the application function that uIP should call in + * response to TCP/IP events. + * + */ + +/** + * \var typedef uip_tcp_appstate_t + * + * The type of the application state that is to be stored in the + * uip_conn structure. This usually is typedef:ed to a struct holding + * application state information. + */ + +/** + * \var typedef uip_udp_appstate_t + * + * The type of the application state that is to be stored in the + * uip_conn structure. This usually is typedef:ed to a struct holding + * application state information. + */ +/** @} */ +/** @} */ + +#endif /* __UIPOPT_H__ */ diff --git a/uip/unix/Makefile b/uip/unix/Makefile new file mode 100644 index 0000000..ed64927 --- /dev/null +++ b/uip/unix/Makefile @@ -0,0 +1,44 @@ +# Copyright (c) 2001, Adam Dunkels. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. The name of the author may not be used to endorse or promote +# products derived from this software without specific prior +# written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS +# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY +# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE +# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, +# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# This file is part of the uIP TCP/IP stack. +# +# $Id: Makefile,v 1.13 2006/06/11 21:55:03 adam Exp $ +# + +all: uip + +CC = gcc +AR = ar +APPS = webserver +CFLAGS = -Wall -g -I../uip -I. -fpack-struct -Os +-include ../uip/Makefile.include + +uip: $(addprefix $(OBJECTDIR)/, main.o tapdev.o clock-arch.o) apps.a uip.a + +clean: + rm -fr *.o *~ *core uip $(OBJECTDIR) *.a diff --git a/uip/unix/clock-arch.c b/uip/unix/clock-arch.c new file mode 100644 index 0000000..d140aaf --- /dev/null +++ b/uip/unix/clock-arch.c @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2006, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: clock-arch.c,v 1.2 2006/06/12 08:00:31 adam Exp $ + */ + +/** + * \file + * Implementation of architecture-specific clock functionality + * \author + * Adam Dunkels <adam@sics.se> + */ + +#include "clock-arch.h" +#include <sys/time.h> + +/*---------------------------------------------------------------------------*/ +clock_time_t +clock_time(void) +{ + struct timeval tv; + struct timezone tz; + + gettimeofday(&tv, &tz); + + return tv.tv_sec * 1000 + tv.tv_usec / 1000; +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/unix/clock-arch.h b/uip/unix/clock-arch.h new file mode 100644 index 0000000..e51eee9 --- /dev/null +++ b/uip/unix/clock-arch.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2006, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: clock-arch.h,v 1.2 2006/06/12 08:00:31 adam Exp $ + */ + +#ifndef __CLOCK_ARCH_H__ +#define __CLOCK_ARCH_H__ + +typedef int clock_time_t; +#define CLOCK_CONF_SECOND 1000 + +#endif /* __CLOCK_ARCH_H__ */ diff --git a/uip/unix/main.c b/uip/unix/main.c new file mode 100644 index 0000000..e4130e9 --- /dev/null +++ b/uip/unix/main.c @@ -0,0 +1,218 @@ +/* + * Copyright (c) 2001, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Adam Dunkels. + * 4. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: main.c,v 1.16 2006/06/11 21:55:03 adam Exp $ + * + */ + + +#include "uip.h" +#include "uip_arp.h" +#include "tapdev.h" + +#include "timer.h" + +#define BUF ((struct uip_eth_hdr *)&uip_buf[0]) + +#ifndef NULL +#define NULL (void *)0 +#endif /* NULL */ + +/*---------------------------------------------------------------------------*/ +int +main(void) +{ + int i; + uip_ipaddr_t ipaddr; + struct timer periodic_timer, arp_timer; + + timer_set(&periodic_timer, CLOCK_SECOND / 2); + timer_set(&arp_timer, CLOCK_SECOND * 10); + + tapdev_init(); + uip_init(); + + uip_ipaddr(ipaddr, 192,168,0,2); + uip_sethostaddr(ipaddr); + uip_ipaddr(ipaddr, 192,168,0,1); + uip_setdraddr(ipaddr); + uip_ipaddr(ipaddr, 255,255,255,0); + uip_setnetmask(ipaddr); + + httpd_init(); + + /* telnetd_init();*/ + + /* hello_world_init();*/ + + /* { + u8_t mac[6] = {1,2,3,4,5,6}; + dhcpc_init(&mac, 6); + }*/ + + /*uip_ipaddr(ipaddr, 127,0,0,1); + smtp_configure("localhost", ipaddr); + SMTP_SEND("adam@sics.se", NULL, "uip-testing@example.com", + "Testing SMTP from uIP", + "Test message sent by uIP\r\n");*/ + + /* + webclient_init(); + resolv_init(); + uip_ipaddr(ipaddr, 195,54,122,204); + resolv_conf(ipaddr); + resolv_query("www.sics.se");*/ + + + + while(1) { + uip_len = tapdev_read(); + if(uip_len > 0) { + if(BUF->type == htons(UIP_ETHTYPE_IP)) { + uip_arp_ipin(); + uip_input(); + /* If the above function invocation resulted in data that + should be sent out on the network, the global variable + uip_len is set to a value > 0. */ + if(uip_len > 0) { + uip_arp_out(); + tapdev_send(); + } + } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) { + uip_arp_arpin(); + /* If the above function invocation resulted in data that + should be sent out on the network, the global variable + uip_len is set to a value > 0. */ + if(uip_len > 0) { + tapdev_send(); + } + } + + } else if(timer_expired(&periodic_timer)) { + timer_reset(&periodic_timer); + for(i = 0; i < UIP_CONNS; i++) { + uip_periodic(i); + /* If the above function invocation resulted in data that + should be sent out on the network, the global variable + uip_len is set to a value > 0. */ + if(uip_len > 0) { + uip_arp_out(); + tapdev_send(); + } + } + +#if UIP_UDP + for(i = 0; i < UIP_UDP_CONNS; i++) { + uip_udp_periodic(i); + /* If the above function invocation resulted in data that + should be sent out on the network, the global variable + uip_len is set to a value > 0. */ + if(uip_len > 0) { + uip_arp_out(); + tapdev_send(); + } + } +#endif /* UIP_UDP */ + + /* Call the ARP timer function every 10 seconds. */ + if(timer_expired(&arp_timer)) { + timer_reset(&arp_timer); + uip_arp_timer(); + } + } + } + return 0; +} +/*---------------------------------------------------------------------------*/ +void +uip_log(char *m) +{ + printf("uIP log message: %s\n", m); +} +void +resolv_found(char *name, u16_t *ipaddr) +{ + u16_t *ipaddr2; + + if(ipaddr == NULL) { + printf("Host '%s' not found.\n", name); + } else { + printf("Found name '%s' = %d.%d.%d.%d\n", name, + htons(ipaddr[0]) >> 8, + htons(ipaddr[0]) & 0xff, + htons(ipaddr[1]) >> 8, + htons(ipaddr[1]) & 0xff); + /* webclient_get("www.sics.se", 80, "/~adam/uip");*/ + } +} +#ifdef __DHCPC_H__ +void +dhcpc_configured(const struct dhcpc_state *s) +{ + uip_sethostaddr(s->ipaddr); + uip_setnetmask(s->netmask); + uip_setdraddr(s->default_router); + resolv_conf(s->dnsaddr); +} +#endif /* __DHCPC_H__ */ +void +smtp_done(unsigned char code) +{ + printf("SMTP done with code %d\n", code); +} +void +webclient_closed(void) +{ + printf("Webclient: connection closed\n"); +} +void +webclient_aborted(void) +{ + printf("Webclient: connection aborted\n"); +} +void +webclient_timedout(void) +{ + printf("Webclient: connection timed out\n"); +} +void +webclient_connected(void) +{ + printf("Webclient: connected, waiting for data...\n"); +} +void +webclient_datahandler(char *data, u16_t len) +{ + printf("Webclient: got %d bytes of data.\n", len); +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/unix/tapdev.c b/uip/unix/tapdev.c new file mode 100644 index 0000000..417b288 --- /dev/null +++ b/uip/unix/tapdev.c @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Author: Adam Dunkels <adam@sics.se> + * + * $Id: tapdev.c,v 1.8 2006/06/07 08:39:58 adam Exp $ + */ + +#define UIP_DRIPADDR0 192 +#define UIP_DRIPADDR1 168 +#define UIP_DRIPADDR2 0 +#define UIP_DRIPADDR3 1 + +#include <fcntl.h> +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/types.h> +#include <sys/time.h> +#include <sys/uio.h> +#include <sys/socket.h> + +#ifdef linux +#include <sys/ioctl.h> +#include <linux/if.h> +#include <linux/if_tun.h> +#define DEVTAP "/dev/net/tun" +#else /* linux */ +#define DEVTAP "/dev/tap0" +#endif /* linux */ + +#include "uip.h" + +static int drop = 0; +static int fd; + + +/*---------------------------------------------------------------------------*/ +void +tapdev_init(void) +{ + char buf[1024]; + + fd = open(DEVTAP, O_RDWR); + if(fd == -1) { + perror("tapdev: tapdev_init: open"); + exit(1); + } + +#ifdef linux + { + struct ifreq ifr; + memset(&ifr, 0, sizeof(ifr)); + ifr.ifr_flags = IFF_TAP|IFF_NO_PI; + if (ioctl(fd, TUNSETIFF, (void *) &ifr) < 0) { + perror(buf); + exit(1); + } + } +#endif /* Linux */ + + snprintf(buf, sizeof(buf), "ifconfig tap0 inet %d.%d.%d.%d", + UIP_DRIPADDR0, UIP_DRIPADDR1, UIP_DRIPADDR2, UIP_DRIPADDR3); + system(buf); + +} +/*---------------------------------------------------------------------------*/ +unsigned int +tapdev_read(void) +{ + fd_set fdset; + struct timeval tv, now; + int ret; + + tv.tv_sec = 0; + tv.tv_usec = 1000; + + + FD_ZERO(&fdset); + FD_SET(fd, &fdset); + + ret = select(fd + 1, &fdset, NULL, NULL, &tv); + if(ret == 0) { + return 0; + } + ret = read(fd, uip_buf, UIP_BUFSIZE); + if(ret == -1) { + perror("tap_dev: tapdev_read: read"); + } + + /* printf("--- tap_dev: tapdev_read: read %d bytes\n", ret);*/ + /* { + int i; + for(i = 0; i < 20; i++) { + printf("%x ", uip_buf[i]); + } + printf("\n"); + }*/ + /* check_checksum(uip_buf, ret);*/ + return ret; +} +/*---------------------------------------------------------------------------*/ +void +tapdev_send(void) +{ + int ret; + /* printf("tapdev_send: sending %d bytes\n", size);*/ + /* check_checksum(uip_buf, size);*/ + + /* drop++; + if(drop % 8 == 7) { + printf("Dropped a packet!\n"); + return; + }*/ + ret = write(fd, uip_buf, uip_len); + if(ret == -1) { + perror("tap_dev: tapdev_send: writev"); + exit(1); + } +} +/*---------------------------------------------------------------------------*/ diff --git a/uip/unix/tapdev.h b/uip/unix/tapdev.h new file mode 100644 index 0000000..280bc52 --- /dev/null +++ b/uip/unix/tapdev.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2001, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Adam Dunkels. + * 4. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: tapdev.h,v 1.1 2002/01/10 06:22:56 adam Exp $ + * + */ + +#ifndef __TAPDEV_H__ +#define __TAPDEV_H__ + +void tapdev_init(void); +unsigned int tapdev_read(void); +void tapdev_send(void); + +#endif /* __TAPDEV_H__ */ diff --git a/uip/unix/uip-conf.h b/uip/unix/uip-conf.h new file mode 100644 index 0000000..2878c85 --- /dev/null +++ b/uip/unix/uip-conf.h @@ -0,0 +1,157 @@ +/** + * \addtogroup uipopt + * @{ + */ + +/** + * \name Project-specific configuration options + * @{ + * + * uIP has a number of configuration options that can be overridden + * for each project. These are kept in a project-specific uip-conf.h + * file and all configuration names have the prefix UIP_CONF. + */ + +/* + * Copyright (c) 2006, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack + * + * $Id: uip-conf.h,v 1.6 2006/06/12 08:00:31 adam Exp $ + */ + +/** + * \file + * An example uIP configuration file + * \author + * Adam Dunkels <adam@sics.se> + */ + +#ifndef __UIP_CONF_H__ +#define __UIP_CONF_H__ + +#include <inttypes.h> + +/** + * 8 bit datatype + * + * This typedef defines the 8-bit type used throughout uIP. + * + * \hideinitializer + */ +typedef uint8_t u8_t; + +/** + * 16 bit datatype + * + * This typedef defines the 16-bit type used throughout uIP. + * + * \hideinitializer + */ +typedef uint16_t u16_t; + +/** + * Statistics datatype + * + * This typedef defines the dataype used for keeping statistics in + * uIP. + * + * \hideinitializer + */ +typedef unsigned short uip_stats_t; + +/** + * Maximum number of TCP connections. + * + * \hideinitializer + */ +#define UIP_CONF_MAX_CONNECTIONS 40 + +/** + * Maximum number of listening TCP ports. + * + * \hideinitializer + */ +#define UIP_CONF_MAX_LISTENPORTS 40 + +/** + * uIP buffer size. + * + * \hideinitializer + */ +#define UIP_CONF_BUFFER_SIZE 420 + +/** + * CPU byte order. + * + * \hideinitializer + */ +#define UIP_CONF_BYTE_ORDER LITTLE_ENDIAN + +/** + * Logging on or off + * + * \hideinitializer + */ +#define UIP_CONF_LOGGING 1 + +/** + * UDP support on or off + * + * \hideinitializer + */ +#define UIP_CONF_UDP 0 + +/** + * UDP checksums on or off + * + * \hideinitializer + */ +#define UIP_CONF_UDP_CHECKSUMS 1 + +/** + * uIP statistics on or off + * + * \hideinitializer + */ +#define UIP_CONF_STATISTICS 1 + +/* Here we include the header file for the application(s) we use in + our project. */ +/*#include "smtp.h"*/ +/*#include "hello-world.h"*/ +/*#include "telnetd.h"*/ +#include "webserver.h" +/*#include "dhcpc.h"*/ +/*#include "resolv.h"*/ +/*#include "webclient.h"*/ + +#endif /* __UIP_CONF_H__ */ + +/** @} */ +/** @} */ |
