From 2973d0c78e9b8eed3c5af239927c6bd36af64604 Mon Sep 17 00:00:00 2001 From: "B. Watson" Date: Wed, 13 Mar 2019 02:50:42 -0400 Subject: initial commit --- uip/apps/telnet/Makefile.telnet | 1 + uip/apps/telnet/telnet.c | 151 ++++++++++++++++++++++++++++++++++++++++ uip/apps/telnet/telnet.h | 67 ++++++++++++++++++ 3 files changed, 219 insertions(+) create mode 100644 uip/apps/telnet/Makefile.telnet create mode 100644 uip/apps/telnet/telnet.c create mode 100644 uip/apps/telnet/telnet.h (limited to 'uip/apps/telnet') 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__ */ -- cgit v1.2.3