summaryrefslogtreecommitdiffstats
path: root/usr.bin/mail/cmd2.c
blob: b25af303713c4e57ece5349c8c436a7c25803905 (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
/*
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  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 the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 */

#ifndef lint
#if 0
static char sccsid[] = "@(#)cmd2.c	8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
  "$FreeBSD$";
#endif /* not lint */

#include "rcv.h"
#include <sys/wait.h>
#include "extern.h"

/*
 * Mail -- a mail program
 *
 * More user commands.
 */

extern int wait_status;

/*
 * If any arguments were given, go to the next applicable argument
 * following dot, otherwise, go to the next applicable message.
 * If given as first command with no arguments, print first message.
 */
int
next(msgvec)
	int *msgvec;
{
	struct message *mp;
	int *ip, *ip2, list[2], mdot;

	if (*msgvec != 0) {

		/*
		 * If some messages were supplied, find the
		 * first applicable one following dot using
		 * wrap around.
		 */

		mdot = dot - &message[0] + 1;

		/*
		 * Find the first message in the supplied
		 * message list which follows dot.
		 */

		for (ip = msgvec; *ip != 0; ip++)
			if (*ip > mdot)
				break;
		if (*ip == 0)
			ip = msgvec;
		ip2 = ip;
		do {
			mp = &message[*ip2 - 1];
			if ((mp->m_flag & MDELETED) == 0) {
				dot = mp;
				goto hitit;
			}
			if (*ip2 != 0)
				ip2++;
			if (*ip2 == 0)
				ip2 = msgvec;
		} while (ip2 != ip);
		printf("No messages applicable\n");
		return (1);
	}

	/*
	 * If this is the first command, select message 1.
	 * Note that this must exist for us to get here at all.
	 */

	if (!sawcom)
		goto hitit;

	/*
	 * Just find the next good message after dot, no
	 * wraparound.
	 */

	for (mp = dot+1; mp < &message[msgCount]; mp++)
		if ((mp->m_flag & (MDELETED|MSAVED)) == 0)
			break;
	if (mp >= &message[msgCount]) {
		printf("At EOF\n");
		return (0);
	}
	dot = mp;
hitit:
	/*
	 * Print dot.
	 */

	list[0] = dot - &message[0] + 1;
	list[1] = 0;
	return (type(list));
}

/*
 * Save a message in a file.  Mark the message as saved
 * so we can discard when the user quits.
 */
int
save(str)
	char str[];
{

	return (save1(str, 1, "save", saveignore));
}

/*
 * Copy a message to a file without affected its saved-ness
 */
int
copycmd(str)
	char str[];
{

	return (save1(str, 0, "copy", saveignore));
}

/*
 * Save/copy the indicated messages at the end of the passed file name.
 * If mark is true, mark the message "saved."
 */
int
save1(str, mark, cmd, ignore)
	char str[];
	int mark;
	const char *cmd;
	struct ignoretab *ignore;
{
	struct message *mp;
	char *file;
	const char *disp;
	int f, *msgvec, *ip;
	FILE *obuf;

	msgvec = (int *)salloc((msgCount + 2) * sizeof(*msgvec));
	if ((file = snarf(str, &f)) == NULL)
		return (1);
	if (!f) {
		*msgvec = first(0, MMNORM);
		if (*msgvec == 0) {
			printf("No messages to %s.\n", cmd);
			return (1);
		}
		msgvec[1] = 0;
	}
	if (f && getmsglist(str, msgvec, 0) < 0)
		return (1);
	if ((file = expand(file)) == NULL)
		return (1);
	printf("\"%s\" ", file);
	(void)fflush(stdout);
	if (access(file, 0) >= 0)
		disp = "[Appended]";
	else
		disp = "[New file]";
	if ((obuf = Fopen(file, "a")) == NULL) {
		warn((char *)NULL);
		return (1);
	}
	for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
		mp = &message[*ip - 1];
		touch(mp);
		if (sendmessage(mp, obuf, ignore, NULL) < 0) {
			warnx("%s", file);
			(void)Fclose(obuf);
			return (1);
		}
		if (mark)
			mp->m_flag |= MSAVED;
	}
	(void)fflush(obuf);
	if (ferror(obuf))
		warn("%s", file);
	(void)Fclose(obuf);
	printf("%s\n", disp);
	return (0);
}

/*
 * Write the indicated messages at the end of the passed
 * file name, minus header and trailing blank line.
 */
int
swrite(str)
	char str[];
{

	return (save1(str, 1, "write", ignoreall));
}

/*
 * Snarf the file from the end of the command line and
 * return a pointer to it.  If there is no file attached,
 * just return NULL.  Put a null in front of the file
 * name so that the message list processing won't see it,
 * unless the file name is the only thing on the line, in
 * which case, return 0 in the reference flag variable.
 */

char *
snarf(linebuf, flag)
	char linebuf[];
	int *flag;
{
	char *cp;

	*flag = 1;
	cp = strlen(linebuf) + linebuf - 1;

	/*
	 * Strip away trailing blanks.
	 */

	while (cp > linebuf && isspace((unsigned char)*cp))
		cp--;
	*++cp = '\0';

	/*
	 * Now search for the beginning of the file name.
	 */

	while (cp > linebuf && !isspace((unsigned char)*cp))
		cp--;
	if (*cp == '\0') {
		printf("No file specified.\n");
		return (NULL);
	}
	if (isspace((unsigned char)*cp))
		*cp++ = '\0';
	else
		*flag = 0;
	return (cp);
}

/*
 * Delete messages.
 */
int
delete(msgvec)
	int msgvec[];
{

	delm(msgvec);
	return (0);
}

/*
 * Delete messages, then type the new dot.
 */
int
deltype(msgvec)
	int msgvec[];
{
	int list[2];
	int lastdot;

	lastdot = dot - &message[0] + 1;
	if (delm(msgvec) >= 0) {
		list[0] = dot - &message[0] + 1;
		if (list[0] > lastdot) {
			touch(dot);
			list[1] = 0;
			return (type(list));
		}
		printf("At EOF\n");
	} else
		printf("No more messages\n");
	return (0);
}

/*
 * Delete the indicated messages.
 * Set dot to some nice place afterwards.
 * Internal interface.
 */
int
delm(msgvec)
	int *msgvec;
{
	struct message *mp;
	int *ip, last;

	last = 0;
	for (ip = msgvec; *ip != 0; ip++) {
		mp = &message[*ip - 1];
		touch(mp);
		mp->m_flag |= MDELETED|MTOUCH;
		mp->m_flag &= ~(MPRESERVE|MSAVED|MBOX);
		last = *ip;
	}
	if (last != 0) {
		dot = &message[last-1];
		last = first(0, MDELETED);
		if (last != 0) {
			dot = &message[last-1];
			return (0);
		}
		else {
			dot = &message[0];
			return (-1);
		}
	}

	/*
	 * Following can't happen -- it keeps lint happy
	 */

	return (-1);
}

/*
 * Undelete the indicated messages.
 */
int
undelete_messages(msgvec)
	int *msgvec;
{
	struct message *mp;
	int *ip;

	for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
		mp = &message[*ip - 1];
		touch(mp);
		dot = mp;
		mp->m_flag &= ~MDELETED;
	}
	return (0);
}

/*
 * Interactively dump core on "core"
 */
int
core()
{
	int pid;

	switch (pid = fork()) {
	case -1:
		warn("fork");
		return (1);
	case 0:
		abort();
		_exit(1);
	}
	printf("Okie dokie");
	(void)fflush(stdout);
	wait_child(pid);
	if (WIFSIGNALED(wait_status) && WCOREDUMP(wait_status))
		printf(" -- Core dumped.\n");
	else
		printf(" -- Can't dump core.\n");
	return (0);
}

/*
 * Clobber as many bytes of stack as the user requests.
 */
int
clobber(argv)
	char **argv;
{
	int times;

	if (argv[0] == 0)
		times = 1;
	else
		times = (atoi(argv[0]) + 511) / 512;
	clob1(times);
	return (0);
}

/*
 * Clobber the stack.
 */
void
clob1(n)
	int n;
{
	char buf[512];
	char *cp;

	if (n <= 0)
		return;
	for (cp = buf; cp < &buf[512]; *cp++ = 0xFF)
		;
	clob1(n - 1);
}

/*
 * Add the given header fields to the retained list.
 * If no arguments, print the current list of retained fields.
 */
int
retfield(list)
	char *list[];
{

	return (ignore1(list, ignore + 1, "retained"));
}

/*
 * Add the given header fields to the ignored list.
 * If no arguments, print the current list of ignored fields.
 */
int
igfield(list)
	char *list[];
{

	return (ignore1(list, ignore, "ignored"));
}

int
saveretfield(list)
	char *list[];
{

	return (ignore1(list, saveignore + 1, "retained"));
}

int
saveigfield(list)
	char *list[];
{

	return (ignore1(list, saveignore, "ignored"));
}

int
ignore1(list, tab, which)
	char *list[];
	struct ignoretab *tab;
	const char *which;
{
	char field[LINESIZE];
	int h;
	struct ignore *igp;
	char **ap;

	if (*list == NULL)
		return (igshow(tab, which));
	for (ap = list; *ap != 0; ap++) {
		istrncpy(field, *ap, sizeof(field));
		if (member(field, tab))
			continue;
		h = hash(field);
		igp = calloc(1, sizeof(struct ignore));
		igp->i_field = calloc((unsigned)strlen(field) + 1,
		    sizeof(char));
		strcpy(igp->i_field, field);
		igp->i_link = tab->i_head[h];
		tab->i_head[h] = igp;
		tab->i_count++;
	}
	return (0);
}

/*
 * Print out all currently retained fields.
 */
int
igshow(tab, which)
	struct ignoretab *tab;
	const char *which;
{
	int h;
	struct ignore *igp;
	char **ap, **ring;

	if (tab->i_count == 0) {
		printf("No fields currently being %s.\n", which);
		return (0);
	}
	ring = (char **)salloc((tab->i_count + 1) * sizeof(char *));
	ap = ring;
	for (h = 0; h < HSHSIZE; h++)
		for (igp = tab->i_head[h]; igp != NULL; igp = igp->i_link)
			*ap++ = igp->i_field;
	*ap = 0;
	qsort(ring, tab->i_count, sizeof(char *), igcomp);
	for (ap = ring; *ap != 0; ap++)
		printf("%s\n", *ap);
	return (0);
}

/*
 * Compare two names for sorting ignored field list.
 */
int
igcomp(l, r)
	const void *l, *r;
{

	return (strcmp(*(const char **)l, *(const char **)r));
}
OpenPOWER on IntegriCloud