aboutsummaryrefslogtreecommitdiff
path: root/src/fujichat.c
blob: 2f369d56c373d8b6f72db9b0ac3e0b1e53353b0b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
/*
 * Copyright (c) 2008, Brian Watson
 * 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 acknowledgements:
 *      This product includes software developed by Adam Dunkels.
 *      This product includes software developed by Brian Watson.
 * 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 FujiChat IRC client.
 *
 */


/* standard C includes */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

/* cc65 includes */
#include <rs232.h>
#include <peekpoke.h>
#include <atari.h>

/* uIP includes */
#include "timer.h"
#include "uip.h"
#include "uiplib.h"
#include "rs232dev.h"

/* FujiChat includes */
#include "fujichat.h"
#include "common.h"
#include "features.h"

#ifdef FEAT_KEYBOARD_MACROS
#include "keybuf.h"
#endif

#ifdef FEAT_COL80_HACK
/* $54 and $55 are ROWCRS and COLCRS.
	COL80 uses them the same way the OS does. */
# define fuji_gotox(x) POKE(0x55, x)
# define fuji_gotoy(y) POKE(0x54, y)
# define fuji_getxpos() PEEK(0x55)
# define fuji_getypos() PEEK(0x54)

/* TODO: calculate from RMARGN-LMARGN. Currently COL80 doesn't set RMARGN */
# ifndef COLUMNS
#  define COLUMNS 80
# endif
#endif


#ifdef FEAT_DYNAMIC_VERSION
char os_version[10] = "XL_XE";
#else
#define os_version "8-bit"
#endif

#ifdef FEAT_LOW_RAM_BUFFERS
#define LOW_RAM_BASE 0x2900
char *input_buf = (char *)LOW_RAM_BASE; // $2900 - $21FF
char *serv_msg_buf = (char *)(LOW_RAM_BASE + BUF_SIZE); // $2A00 - $2BFF
char *output_buf = (char *)(LOW_RAM_BASE + BUF_SIZE + BUF_SIZE * 2); // $2C00 - $2DFF
#else
char input_buf[BUF_SIZE];
char serv_msg_buf[BUF_SIZE * 2];
char output_buf[OUTBUF_SIZE];
#endif

char channel[HOSTLEN];

#ifdef FEAT_KEYBOARD_MACROS
char last_msg_nick[NICKLEN+1] = "";
#endif

int serv_msg_buf_len = 0;
int input_buf_len = 0;
int output_buf_len = 0;

char done = 0;
char connected = 0;
char joined_channel = 0; /* true if we're in a channel */
char nick_registered = 0;

#ifdef FEAT_VISUAL_BELL
char vbell_active = 0;
#endif

#ifdef FEAT_ATRACT_AWAY
char away = 0;
#endif

static void handle_keystroke(void);

#ifdef FEAT_LOGGING
static void alloc_log_buffer();
#endif

#if defined(FEAT_CURSOR_CONTROLS) || defined(FEAT_COL80_HACK)
void redraw_user_buffer();
void del_user_buffer();
#endif

/* uIP API stuff */
struct timer nick_reg_timer; /* ../uip/timer.h */
struct telnet_state *tstate; /* ../apps/telnet.h */

#ifdef FEAT_VISUAL_BELL
struct timer vbell_timer;
#endif

/*---------------------------------------------------------------------------*/
void main(void) {
#ifdef FEAT_DYNAMIC_VERSION
	char c;
#endif
	int i;
	uip_ipaddr_t ipaddr;
	struct timer periodic_timer;
	char cmdbuf[HOSTLEN+1];

	disable_break();

#ifdef FEAT_DYNAMIC_VERSION
	c = get_ostype() & AT_OS_TYPE_MAIN;
	if(c == AT_OS_400800) {
		strcpy(os_version, "800");
	} else if(c == AT_OS_1200XL) {
		strcpy(os_version, "1200XL");
	}
#endif

	/* set screen colors to white-on-black initially. They may be
		reset by the user's config file, once it's loaded */
	POKE(710, 0);
	POKE(709, 12);

#ifndef FEAT_COL80_HACK
	fuji_putchar(A_CLR);
#endif

	puts(BANNER);
	fuji_putchar('\n');

	if(!config_is_valid()) {
		if(!get_config())
			set_default_config();
	}

#ifdef FEAT_LOGGING
	alloc_log_buffer();
#endif

	// config->ui_flags |= UIFLAG_HIDEMOTD; // TODO: make it a preference!

	while(1) {
		done = 0;
		rs232dev_close();

		POKE(710, config->bg_color);
		POKE(709, config->fg_color);

		printf("Server name/IP, [S]etup, or [D]OS\n");
		printf("[%s]: ", config->server);
		fflush(stdout);
		get_line(cmdbuf, HOSTLEN);

		if(strcasecmp(cmdbuf, "d") == 0) {
			exit(0);
		} else if(strcasecmp(cmdbuf, "s") == 0) {
			i = atari_exec(SETUP_FILENAME);
			printf("Error %d!\n", i);
			bell();
			continue;
		} else if(*cmdbuf) {
			strcpy(config->server, cmdbuf);
		}
		/* else, use the existing config->server */

		if(rs232dev_init(config->baud) != RS_ERR_OK)
			continue;

		timer_set(&periodic_timer, CLOCK_SECOND / 2);

		uip_init();

		memcpy(uip_hostaddr, &(config->local_ip), 4);
		memcpy(uip_draddr, &(config->peer_ip), 4);

		/* can I use 255.255.255.252 here? Does it matter? */
		uip_ipaddr(ipaddr, 255,255,255,0);
		uip_setnetmask(ipaddr);

		if(uiplib_ipaddrconv(config->server, (unsigned char*)&ipaddr)) {
			(void)uip_connect(&ipaddr, htons(config->server_port));
		} else {
			resolv_init();
			resolv_conf((u16_t *)&(config->resolver_ip)); // TODO: fix so I don't need extra ()
			resolv_query(config->server);
		}

		while(!done) {
			/* This part of the while loop is straight from the no-ARP example
				code, from the uIP docs. */
			uip_len = rs232dev_poll();
			if(uip_len > 0) {
				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) {
					rs232dev_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) {
						rs232dev_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) {
						rs232dev_send();
					}
				}
#endif /* UIP_UDP */
			}

#ifdef FEAT_VISUAL_BELL
			if(vbell_active && timer_expired(&vbell_timer)) {
				POKE(710, config->bg_color);
				vbell_active = 0;
			}
#endif

			/* Call the keyboard handler if the user pressed a key. Note that
				we're using stdio for printing, but conio for reading, which
				works on the Atari but may not work on all other cc65 platforms */
#ifdef FEAT_KEYBOARD_BUFFER
			/* always call; will return if nothing to do */
			handle_keystroke();
#else
			if(PEEK(764) != 0xff) { /* check CH (replaces kbhit()) */
				handle_keystroke();
			}
#endif

#ifdef FEAT_ATRACT_AWAY
			if(away && input_buf_len && !(PEEK(77) & 0x80)) {
				away = 0;
				send_server_cmd("AWAY", NULL);
			} else if(!away && (PEEK(77) & 0x80)) {
				away = 1;
				send_server_cmd("AWAY", "ATRACT Mode");
			}
#endif

			/* Automatically register the nick and userhost after being
				connected for a couple seconds. The parameters for the USER
				command are ignored by the server (at least the NewNet servers) */
			if(connected && !nick_registered && timer_expired(&nick_reg_timer)) {
				puts("> Registering nick");

				serv_msg_buf_len = sprintf(
						serv_msg_buf, "NICK %s%cUSER %s %s %s :%s%c",
						config->nick, NL, config->nick, SELF,
						config->server, config->real_name, NL);
				send_serv_msg_buf();

				/*
				sprintf(input_buf, "NICK %s%cUSER %s %s %s :%s%c",
						config->nick, NL, config->nick, SELF,
						config->server, config->real_name, NL);
				telnet_send(tstate, input_buf, strlen(input_buf));
				*/

				input_buf_len = 0;
				nick_registered = 1;
				/* TODO: check for failure registering the nick */
			}

			/*
			if(PEEK(53279) == 6) { // START pressed
				puts("Disconnecting");
				uip_close();
				// done = 1;
			}
			*/
		}

		connected = nick_registered = joined_channel = 0;
	}
	// return 0;
}

void bell() {
	if(config->ui_flags & UIFLAG_NOBELL)
		return;

#ifdef FEAT_VISUAL_BELL
	if(config->ui_flags & UIFLAG_VBELL) {
		vbell_active = 1;
		timer_set(&vbell_timer, CLOCK_SECOND / 10);
		POKE(710, config->bg_color + 8);
		return;
	}
#endif

#ifndef FEAT_COL80_HACK /* COL80 E: doesn't do the bell character */
	fuji_putchar(A_BEL);
#endif
}

static void err_no_channel(void) {
	puts("You are not in a channel (use /join #channel)");
	bell();
}

#ifdef FEAT_CURSOR_CONTROLS
static void del_last_word(void) {
	int old = input_buf_len, bs = 0;

	while(input_buf_len && input_buf[input_buf_len] == ' ') {
		++bs;
		input_buf_len--;
	}

	while(input_buf_len && input_buf[input_buf_len] != ' ') {
		++bs;
		input_buf_len--;
	}

	if(old > 120 && input_buf_len <= 120) {
		fuji_putchar(0x1c);
		fuji_putchar(A_DEL);
		fuji_putchar(A_DEL);
		redraw_user_buffer();
	} else do {
		fuji_putchar(A_BS);
	} while(--bs);
}
#endif

#ifdef FEAT_COL80_HACK
void col80_backspace(char destructive) {
	char x = fuji_getxpos();
	char y = fuji_getypos();

	if(x) {
		--x;
	} else {
		x = COLUMNS - 1;
		--y;
	}

	fuji_gotox(x);
	fuji_gotoy(y);
	if(destructive) {
		fuji_putchar(' ');
		fuji_gotox(x);
		fuji_gotoy(y);
	}
}

//void col80_cursor(void) {
//	fuji_putchar(0xa0); /* inverse space */
//	col80_backspace(0);
//}

#  define backspace() col80_backspace(1)

#else
#  define backspace() fuji_putchar(A_BS)
#endif

/* Keyboard handler. For now, the keyboard macros are hard-coded. */
static void handle_keystroke(void) {
	char i, c, send_buf = 0;

	/* TODO:
		ctrl-7 = ` (warning: cgetc() can't read this)
		ctrl-, = {
		ctrl-. = }
		ctrl-; = ~ (don't do ctrl-^, that's left-arrow!)

		Ignore inverse-video key, ATASCII graphics, unwanted
		cursor actions, make caps-lock stop freezing the program.
		To do this right, we have to examine location 764 for some
		of these, and don't call cgetc() at all... or actually,
		stuff a valid keycode there, then call cgetc() to make a
		keyclick noise (but ignore its return value).
		Addendum - this should be handled in keybuf.s?

		Stock col80 key mappings are warped:
		ctrl-clear = }
		ctrl-;     = {
		ctrl-.     = `
		No way to type a tilde because that's the A8 backspace char :(

	*/
#ifdef FEAT_KEYBOARD_BUFFER
	c = keybuf_cgetc();
	if(!c) return;
#else
	c = fuji_cgetc();
#endif

#ifdef FEAT_KEYBOARD_MACROS
	/* Keyboard macros, only allowed at the start of a new line */
	if(input_buf_len == 0) {
		switch(c) {
			case 0x0e: /* ctrl-N */
				if(joined_channel) send_server_cmd("NAMES", channel);
				return;

			case 0x17: /* ctrl-W */
				if(joined_channel) send_server_cmd("WHO", channel);
				return;

			case A_EOL:
				return; /* ignore Return on a line by itself */

			case A_TAB:
				if(last_msg_nick[0]) {
					sprintf(input_buf, "/msg %s ", last_msg_nick);
					input_buf_len = strlen(input_buf);
					for(i=0; i<input_buf_len; i++)
						fuji_putchar(input_buf[i] | 0x80);
				}
				return;

			default:
				break;
		}
	}
#else
	if(!input_buf_len && c == A_EOL)
		return;
#endif

	/* Editing keys */
	/* TODO: more editing keys. At minimum:
		left/right arrows
		^W = delete last word
		^U = kill to start of line
		^K = kill to end of line
		^A = goto start of line
		^E = goto end of line
		^L = redraw input buffer
	 */
	if(c == A_BS) { /* backspace */
		if(input_buf_len > 0) {
			input_buf_len--;
#ifdef FEAT_COL80_HACK
			col80_backspace(1);
			// fuji_putchar(' ');
			// col80_backspace(0);
			// col80_cursor();
#else
			fuji_putchar(c);
#endif
		} else {
			bell();
		}

		return;
	} else if(c == A_DEL || c == 0x15) {
		/* shift-backspace or ^U (delete line) */
#ifdef FEAT_COL80_HACK
		del_user_buffer();
		// col80_cursor();
#else
		fuji_putchar(A_DEL);
#endif
		input_buf_len = 0;
		return;
#ifdef FEAT_CURSOR_CONTROLS
	} else if(c == 0x17) {
		/* ^W (delete word) */
		del_last_word();
		return;
#endif
	}

	/* Echo keystroke */
	fuji_putchar(c | 0x80); /* inverse video for now */

	if(c == A_EOL) {
		c = NL;
		send_buf = 1;
	} else if(c == A_TAB) {
		c = TAB;
	}
// #ifdef FEAT_COL80_HACK
	// else { col80_cursor(); }
// #endif


#ifdef FEAT_UNICODE_TEST
	if(c == 0x10) { /* ATASCII clubs symbol */
		input_buf[input_buf_len++] = 0xe2; /* UTF-8 marker */
		input_buf[input_buf_len++] = 0x99;
		input_buf[input_buf_len++] = 0xa3;
		fuji_putchar(c);
		return;
	}
#endif

	/* Store keystroke in input buffer */
	input_buf[input_buf_len++] = c;

	/* If line too long, ring the "margin" bell */
	if(input_buf_len > BUF_SIZE - 1)
		if(!send_buf) {
			bell();
			// fuji_putchar(A_BS);
			backspace();
			input_buf_len--;
		}

	/* If we've got a complete line of input and user has pressed Return,
		send it to the server */
	if(send_buf) {
		input_buf[input_buf_len] = '\0';

		if(*input_buf == '/') {
			handle_command();
		} else if(joined_channel) {
			sprintf(serv_msg_buf, "PRIVMSG %s :%s", channel, input_buf);
			telnet_send(tstate, serv_msg_buf, strlen(serv_msg_buf));
		} else {
			err_no_channel();
		}

		input_buf_len = 0;
	}
}

void send_serv_msg_buf(void) {
	telnet_send(tstate, serv_msg_buf, serv_msg_buf_len);
}

void send_server_cmd(char *cmd, char *arg) {
	if(arg) {
		serv_msg_buf_len = sprintf(serv_msg_buf, "%s :%s%c", cmd, arg, NL);
	} else {
		serv_msg_buf_len = sprintf(serv_msg_buf, "%s%c", cmd, NL);
	}

	send_serv_msg_buf();
}

/* 20190313 bkw: for the /msg command and similar. arg contains the
	full argument (nick and text). We have to quote the text
	with a colon. User enters "/m nick this stuff" and we say
	to the server "PRIVMSG nick :this stuff" */
void send_server_cmd_2arg(char *cmd, char *arg) {
	char *p;

	for(p = arg; *p; p++) {
		if(*p == ' ') {
			*p = '\0';
			serv_msg_buf_len = sprintf(serv_msg_buf, "%s %s :%s%c", cmd, arg, p + 1, NL);
			send_serv_msg_buf();
			return;
		}
	}
	puts("> Invalid argument");
}

/* The telnet_* functions are uIP application callbacks. */
void telnet_connected(struct telnet_state *s) {
	/* puts("Connected to host, press START to disconnect"); */
	puts("> Connected to server");
	tstate = s;
	s->text = NULL;
	s->textlen = 0;
	timer_set(&nick_reg_timer, CLOCK_SECOND);
	connected = 1;
}

/* 20081125 bkw: why don't these pragmas do anything? */
#pragma warn (off)
void telnet_closed(struct telnet_state *s) {
	puts("> Connection closed");
	uip_close();
	done = 1;
}

void telnet_sent(struct telnet_state *s) {
}

void telnet_aborted(struct telnet_state *s) {
	puts("> Connection aborted");
	uip_abort();
	done = 1;
}

void telnet_timedout(struct telnet_state *s) {
	puts("> Connection timed out");
	uip_abort();
	done = 1;
}
#pragma warn (on)

void do_pong() {
	char *p = serv_msg_buf;

	memcpy(serv_msg_buf, output_buf, output_buf_len);
	serv_msg_buf[1] = 'O';
	while(*p) {
		if(*p == A_EOL) *p = NL;
		p++;
	}

	telnet_send(tstate, serv_msg_buf, output_buf_len);
	if(config->ui_flags & UIFLAG_SHOWPING)
		puts("[PING,PONG]");
}

void do_server_msg() {
	char *cmd = output_buf, *arg;
	int numeric = 0, len;

	while(*cmd != ' ')
		++cmd;

	++cmd;

	arg = cmd;
	while(*arg != ' ')
		++arg;

	*arg = '\0';
	++arg;

	len = strlen(config->nick);
	if(memcmp(arg, config->nick, len) == 0)
		arg += (len + 1); // skip nick if present

	if(arg[0] == ':')
		++arg;

	/* now cmd points to the command (numeric or whatever),
		arg points to the rest of the string.
		Numeric commands we handle now I guess. I think they
		all have the nick as the 1st argument...
	 */
	if( (numeric = atoi(cmd)) ) {
		switch(numeric) {
			case 332: // topic
				printf("> Topic: %s", arg);
				return;
				break;

			case 333: // topic nick
				printf("> Topic set by %s", arg);
				return;
				break;

			case 375: // start of MOTD
			case 372: // MOTD text
				if(config->ui_flags & UIFLAG_HIDEMOTD) {
					if(numeric == 375)
						puts("> Hiding MOTD (be patient)");
				}
				return;
				break;

			case 376: // end of MOTD
			case 422: // or MOTD missing
				if(*(config->channel)) {
					strcpy(channel, config->channel);
					printf("> Joining %s\n", channel);
					send_server_cmd("JOIN", channel);
					joined_channel = 1;
				}
				break;

				/*
			case 352: // /who list
			case 353: // /names list
			case 366: // end of /names
			case 315: // end of /who
				break;
				*/

			default:
				break;
		}
	}

	printf("%s %s", cmd, arg);
}

char incoming_ctcp(char *nick, char *msg) {
	long now, then;
	int sec, dec;

	if(memcmp(msg, "PING ", 5) == 0) {
		now = clock() * 10L;
		then = ((long)(atoi(msg + 5)) +
			    ((long)(atoi(msg + 9)) << 8) +
			    ((long)(atoi(msg + 13)) << 16)) * 10L;

		now -= then;
		now /= CLOCKS_PER_SEC;
		sec = now / 10;
		dec = now % 10;

		/* silently ignore timestamp wraparound */
		/*
		if(then >= now)
			return 1;
			*/

		printf("> %s ping time: %d.%d\n", nick, sec, dec);
		return 1;
	}

	return 0;
}

/* Handler for text received from the server, responsible for
	formatting. TODO: part/join/quit aren't handled correctly. */
void do_msg() {
	char *nick = output_buf, *cmd = output_buf, *chan = NULL, *msg = NULL;
	char *bang = NULL;

	while(*cmd != ' ') {
		if(*cmd == '!') {
			bang = cmd;
		}
		++cmd;
	}

	/* no ! in nick means a server message */
	if(!bang) {
		do_server_msg();
		return;
	}

	*cmd = '\0';
	++cmd;
	chan = cmd;

	while(*chan != ' ')
		++chan;
	*chan = '\0';
	++chan;
	msg = chan;

	if(*msg != A_EOL) {
		while(*msg && *msg != ' ')
			++msg;
		if(*msg) {
			*msg = '\0';
			++msg;
			if(*msg == ':') ++msg;
		}
	}

	/* FIXME: This stuff is hairy, unmaintainable, and probably just wrong
		(works OK with the 2 or 3 NewNet servers I test with, not tried
		others). It's the result of too much coffee, and needs to be
		redesigned. Heck, it needs to be designed in the first place! */
	if(strcmp(cmd, "PRIVMSG") == 0) {
		nick[0] = '<';
		bang[0] = '>';
		bang[1] = '\0';
		if(strcasecmp(chan, config->nick) != 0) {
			// privmsg, not to our nick, must be channel text
			if(memcmp(msg, "\x01" "ACTION ", 8) == 0) {
				nick++;
				*bang = '\0';
				output_buf[output_buf_len - 2] = A_EOL;
				output_buf[output_buf_len - 1] = '\0';
				printf("* %s %s", nick, msg + 8);
			} else {
				printf("%s %s", nick, msg);
			}
		} else {
			// privmsg, is to our nick
			if(memcmp(msg, "\x01" "PING ", 6) == 0) {
				nick++;
				bang[0] = '\0';
				output_buf[output_buf_len - 2] = '\0';
				serv_msg_buf_len = sprintf(serv_msg_buf, "NOTICE %s :\x01PING %s\x01%c",
						nick, msg + 6, 0x0a);
				send_serv_msg_buf();
				printf("* CTCP PING from %s\n", nick);
			} else if(memcmp(msg, "\x01" "VERSION\x01", 9) == 0) {
				nick++;
				*bang = '\0';
				serv_msg_buf_len = sprintf(serv_msg_buf, "NOTICE %s :\x01VERSION "
						VERSION_REPLY " - running on "
						"an Atari %s\x01%c",
						nick, os_version, 0x0a);
				send_serv_msg_buf();
				printf("* CTCP VERSION from %s\n", nick);
			} else {
				printf("-> %s %s", nick, msg);
				if(config->ui_flags & UIFLAG_MSGBELL)
					bell();
				bang[0] = '\0';
#ifdef FEAT_KEYBOARD_MACROS
				strcpy(last_msg_nick, nick + 1);
#endif
			}
		}
	} else if((strcmp(cmd, "NOTICE") == 0) && msg[0] == '\x01') {
		nick++;
		*bang = '\0';
		if(!incoming_ctcp(nick, msg+1))
			printf("* CTCP reply from %s: %s", nick, msg+1); // still has A_EOL
	} else {
		if(*msg) {
			printf("%s %s %s %s", nick, cmd, chan, msg);
		} else {
			printf("%s %s %s", nick, cmd, chan);
		}
	}

	fflush(stdout);
}

#ifdef FEAT_CURSOR_CONTROLS
void del_user_buffer() {
	/* delete user edit buffer */
	if(input_buf_len) {
		fuji_putchar(A_DEL);
		if(input_buf_len > 119) {
			fuji_putchar(0x1c); /* up arrow */
			fuji_putchar(A_DEL);
		}
	}
}

#elif defined(FEAT_COL80_HACK)

/* COL80 doesn't support the delete-line or arrow key
	control codes.

	Deleting and redrawing the user buffer is done by:

	1. Move the cursor to the start of the buffer on screen
	2. Print input_buf_len spaces
	3. Move cursor to the same spot as (1)
	4. Print the incoming text including EOL as usual
	5. redraw_user_buffer() as usual
*/

void del_user_buffer() {
	int tlen;
	char oldy;

	if(!input_buf_len)
		return;

	tlen = input_buf_len;
	oldy = fuji_getypos() - (input_buf_len / COLUMNS);

	fuji_gotox(0);
	fuji_gotoy(oldy);

	do {
		fuji_putchar(' ');
	} while(--tlen);

	fuji_gotox(0);
	fuji_gotoy(oldy);
}

#endif

#if defined(FEAT_CURSOR_CONTROLS) || defined(FEAT_COL80_HACK)
//void redraw_user_buffer() {
//	int tlen;
//#  ifdef FEAT_LOW_RAM_BUFFERS
//#    define redraw_buf ((char *) 0x2800)
//#  else
//	static char redraw_buf[BUF_SIZE];
//#  endif
//	/* reprint user edit buffer */
//	if(input_buf_len) {
//		tlen = input_buf_len - 1;
//		do {
//			redraw_buf[tlen] = input_buf[tlen] | 0x80;
//		} while(tlen--);
//		redraw_buf[input_buf_len] = '\0';
//		fputs(redraw_buf, stdout);
//		fflush(stdout);
//	}
//}

void redraw_user_buffer() {
	int i;
	if(input_buf_len) {
		for(i=0; i<input_buf_len; ++i)
			fuji_putchar(input_buf[i] | 0x80);
	}
}

#endif

/* Another uIP app callback. This decides whether or not we've received
	a complete message from the server (which may be split into multiple
	packets, and may end in the middle of a packet) */
void telnet_newdata(struct telnet_state *s, char *data, u16_t len) {
	u16_t tlen = len;
	char c, *t = data, buf_done = 0;

	while(tlen-- != 0) {
		c = *t++;
		if(c == NL) { // swallow NL
			continue;
		} else if(c == CR) { // CR => EOL
			c = A_EOL;
			buf_done = 1;
		} else if(c == TAB) { // tab
			c = A_TAB;
#ifndef FEAT_COL80_HACK
			/* COL80 can actually print these OK */
		} else if(c == '{') {
			c = '[' | 0x80;
		} else if(c == '}') {
			c = ']' | 0x80;
		} else if(c == '~') {
			c = '^' | 0x80;
		} else if(c == 0x60) { // backtick
			c = 0xa7; // inverse quote
#endif
		}

		output_buf[output_buf_len++] = c;
		if(output_buf_len >= OUTBUF_SIZE) {
			puts("[buffer overflow]\xfd");
			buf_done = 1;
			break;
		}

		if(buf_done) {
#if defined(FEAT_CURSOR_CONTROLS) || defined(FEAT_COL80_HACK)
			del_user_buffer();
#endif
			output_buf[output_buf_len] = '\0';

			if(output_buf_len > 4 && (memcmp(output_buf, "PING", 4) == 0)) {
				do_pong();
			} else if(output_buf[0] == ':') {
				do_msg();
			} else {
				fputs(output_buf, stdout);
				fflush(stdout);
			}

#if defined(FEAT_CURSOR_CONTROLS) || defined(FEAT_COL80_HACK)
			redraw_user_buffer();
#endif

#ifdef FEAT_COL80_HACK
			// col80_cursor();
#endif
			output_buf_len = 0;
			buf_done = 0;
		}
	}
}


/*---------------------------------------------------------------------------*/

/* uIP app callback for the resolver */
void resolv_found(char *name, u16_t *ipaddr) {
	if(ipaddr == NULL) {
		printf("Host '%s' not found.\n", name);
		done = 1;
	} else {
		printf("%s is %s\n", name, format_ip((uip_ipaddr_t *)ipaddr));
		/*
		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);
				*/
		if(!connected)
			(void)uip_connect((uip_ipaddr_t *)ipaddr, htons(config->server_port));
	}
}

#ifdef FEAT_LOGGING

/* 0x100 * 32 = 8K (but we likely won't get that much) */
#define LOG_PAGE_SIZE 0x200
#define LOG_MAX_PAGES 16
#define LOG_SCROLL_PAGES 2

static char *log_buffer = NULL;
static char *log_buf_end = NULL;
static char *log_buf_current = NULL;
static int log_pages = LOG_MAX_PAGES;

static char last_log_nick[NICKLEN + 1];

static void alloc_log_buffer() {
	do {
		printf("Trying to malloc(%x)...", LOG_PAGE_SIZE * log_pages);

		log_buffer = malloc(LOG_PAGE_SIZE * log_pages);

		if(log_buffer) {
			puts("OK");
		} else {
			puts("Failed");
		}
	} while(!log_buffer && (--log_pages > LOG_SCROLL_PAGES * 2));

	if(!log_buffer) return;

	log_buf_end = (char *)(log_pages * LOG_PAGE_SIZE - 1);
	log_buf_current = log_buffer;

	printf("log_buffer == %x (%x)", log_buffer, log_pages * LOG_PAGE_SIZE);
	fuji_cgetc();
}

static void log_msg(char *msg) {
	int len = strlen(msg);
	if( (log_buf_current + len + 1) > log_buf_end ) {
		memmove(log_buffer, log_buffer + (LOG_SCROLL_PAGES * LOG_PAGE_SIZE), (log_pages - LOG_SCROLL_PAGES) * LOG_PAGE_SIZE);
		log_buf_current -= (LOG_SCROLL_PAGES * LOG_PAGE_SIZE);
	}
}

#endif