1 /*
2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef lint
31 #if 0
32 static char sccsid[] = "@(#)cmd2.c 8.1 (Berkeley) 6/6/93";
33 #endif
34 #endif /* not lint */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #include "rcv.h"
39 #include <sys/wait.h>
40 #include "extern.h"
41
42 /*
43 * Mail -- a mail program
44 *
45 * More user commands.
46 */
47
48 extern int wait_status;
49
50 /*
51 * If any arguments were given, go to the next applicable argument
52 * following dot, otherwise, go to the next applicable message.
53 * If given as first command with no arguments, print first message.
54 */
55 int
next(int * msgvec)56 next(int *msgvec)
57 {
58 struct message *mp;
59 int *ip, *ip2, list[2], mdot;
60
61 if (*msgvec != 0) {
62
63 /*
64 * If some messages were supplied, find the
65 * first applicable one following dot using
66 * wrap around.
67 */
68
69 mdot = dot - &message[0] + 1;
70
71 /*
72 * Find the first message in the supplied
73 * message list which follows dot.
74 */
75
76 for (ip = msgvec; *ip != 0; ip++)
77 if (*ip > mdot)
78 break;
79 if (*ip == 0)
80 ip = msgvec;
81 ip2 = ip;
82 do {
83 mp = &message[*ip2 - 1];
84 if ((mp->m_flag & MDELETED) == 0) {
85 dot = mp;
86 goto hitit;
87 }
88 if (*ip2 != 0)
89 ip2++;
90 if (*ip2 == 0)
91 ip2 = msgvec;
92 } while (ip2 != ip);
93 printf("No messages applicable\n");
94 return (1);
95 }
96
97 /*
98 * If this is the first command, select message 1.
99 * Note that this must exist for us to get here at all.
100 */
101
102 if (!sawcom)
103 goto hitit;
104
105 /*
106 * Just find the next good message after dot, no
107 * wraparound.
108 */
109
110 for (mp = dot+1; mp < &message[msgCount]; mp++)
111 if ((mp->m_flag & (MDELETED|MSAVED)) == 0)
112 break;
113 if (mp >= &message[msgCount]) {
114 printf("At EOF\n");
115 return (0);
116 }
117 dot = mp;
118 hitit:
119 /*
120 * Print dot.
121 */
122
123 list[0] = dot - &message[0] + 1;
124 list[1] = 0;
125 return (type(list));
126 }
127
128 /*
129 * Save a message in a file. Mark the message as saved
130 * so we can discard when the user quits.
131 */
132 int
save(char str[])133 save(char str[])
134 {
135
136 return (save1(str, 1, "save", saveignore));
137 }
138
139 /*
140 * Copy a message to a file without affected its saved-ness
141 */
142 int
copycmd(char str[])143 copycmd(char str[])
144 {
145
146 return (save1(str, 0, "copy", saveignore));
147 }
148
149 /*
150 * Save/copy the indicated messages at the end of the passed file name.
151 * If mark is true, mark the message "saved."
152 */
153 int
save1(char str[],int mark,const char * cmd,struct ignoretab * ignore)154 save1(char str[], int mark, const char *cmd, struct ignoretab *ignore)
155 {
156 struct message *mp;
157 char *file;
158 const char *disp;
159 int f, *msgvec, *ip;
160 FILE *obuf;
161
162 msgvec = (int *)salloc((msgCount + 2) * sizeof(*msgvec));
163 if ((file = snarf(str, &f)) == NULL)
164 return (1);
165 if (!f) {
166 *msgvec = first(0, MMNORM);
167 if (*msgvec == 0) {
168 printf("No messages to %s.\n", cmd);
169 return (1);
170 }
171 msgvec[1] = 0;
172 }
173 if (f && getmsglist(str, msgvec, 0) < 0)
174 return (1);
175 if ((file = expand(file)) == NULL)
176 return (1);
177 printf("\"%s\" ", file);
178 (void)fflush(stdout);
179 if (access(file, 0) >= 0)
180 disp = "[Appended]";
181 else
182 disp = "[New file]";
183 if ((obuf = Fopen(file, "a")) == NULL) {
184 warn((char *)NULL);
185 return (1);
186 }
187 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
188 mp = &message[*ip - 1];
189 touch(mp);
190 if (sendmessage(mp, obuf, ignore, NULL) < 0) {
191 warnx("%s", file);
192 (void)Fclose(obuf);
193 return (1);
194 }
195 if (mark)
196 mp->m_flag |= MSAVED;
197 }
198 (void)fflush(obuf);
199 if (ferror(obuf))
200 warn("%s", file);
201 (void)Fclose(obuf);
202 printf("%s\n", disp);
203 return (0);
204 }
205
206 /*
207 * Write the indicated messages at the end of the passed
208 * file name, minus header and trailing blank line.
209 */
210 int
swrite(char str[])211 swrite(char str[])
212 {
213
214 return (save1(str, 1, "write", ignoreall));
215 }
216
217 /*
218 * Snarf the file from the end of the command line and
219 * return a pointer to it. If there is no file attached,
220 * just return NULL. Put a null in front of the file
221 * name so that the message list processing won't see it,
222 * unless the file name is the only thing on the line, in
223 * which case, return 0 in the reference flag variable.
224 */
225
226 char *
snarf(char linebuf[],int * flag)227 snarf(char linebuf[], int *flag)
228 {
229 char *cp;
230
231 *flag = 1;
232 cp = strlen(linebuf) + linebuf - 1;
233
234 /*
235 * Strip away trailing blanks.
236 */
237
238 while (cp > linebuf && isspace((unsigned char)*cp))
239 cp--;
240 *++cp = '\0';
241
242 /*
243 * Now search for the beginning of the file name.
244 */
245
246 while (cp > linebuf && !isspace((unsigned char)*cp))
247 cp--;
248 if (*cp == '\0') {
249 printf("No file specified.\n");
250 return (NULL);
251 }
252 if (isspace((unsigned char)*cp))
253 *cp++ = '\0';
254 else
255 *flag = 0;
256 return (cp);
257 }
258
259 /*
260 * Delete messages.
261 */
262 int
delete(int msgvec[])263 delete(int msgvec[])
264 {
265
266 delm(msgvec);
267 return (0);
268 }
269
270 /*
271 * Delete messages, then type the new dot.
272 */
273 int
deltype(int msgvec[])274 deltype(int msgvec[])
275 {
276 int list[2];
277 int lastdot;
278
279 lastdot = dot - &message[0] + 1;
280 if (delm(msgvec) >= 0) {
281 list[0] = dot - &message[0] + 1;
282 if (list[0] > lastdot) {
283 touch(dot);
284 list[1] = 0;
285 return (type(list));
286 }
287 printf("At EOF\n");
288 } else
289 printf("No more messages\n");
290 return (0);
291 }
292
293 /*
294 * Delete the indicated messages.
295 * Set dot to some nice place afterwards.
296 * Internal interface.
297 */
298 int
delm(int * msgvec)299 delm(int *msgvec)
300 {
301 struct message *mp;
302 int *ip, last;
303
304 last = 0;
305 for (ip = msgvec; *ip != 0; ip++) {
306 mp = &message[*ip - 1];
307 touch(mp);
308 mp->m_flag |= MDELETED|MTOUCH;
309 mp->m_flag &= ~(MPRESERVE|MSAVED|MBOX);
310 last = *ip;
311 }
312 if (last != 0) {
313 dot = &message[last-1];
314 last = first(0, MDELETED);
315 if (last != 0) {
316 dot = &message[last-1];
317 return (0);
318 }
319 else {
320 dot = &message[0];
321 return (-1);
322 }
323 }
324
325 /*
326 * Following can't happen -- it keeps lint happy
327 */
328
329 return (-1);
330 }
331
332 /*
333 * Undelete the indicated messages.
334 */
335 int
undelete_messages(int * msgvec)336 undelete_messages(int *msgvec)
337 {
338 struct message *mp;
339 int *ip;
340
341 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
342 mp = &message[*ip - 1];
343 touch(mp);
344 dot = mp;
345 mp->m_flag &= ~MDELETED;
346 }
347 return (0);
348 }
349
350 /*
351 * Interactively dump core on "core"
352 */
353 int
core(void)354 core(void)
355 {
356 int pid;
357
358 switch (pid = fork()) {
359 case -1:
360 warn("fork");
361 return (1);
362 case 0:
363 abort();
364 _exit(1);
365 }
366 printf("Okie dokie");
367 (void)fflush(stdout);
368 wait_child(pid);
369 if (WIFSIGNALED(wait_status) && WCOREDUMP(wait_status))
370 printf(" -- Core dumped.\n");
371 else
372 printf(" -- Can't dump core.\n");
373 return (0);
374 }
375
376 /*
377 * Clobber as many bytes of stack as the user requests.
378 */
379 int
clobber(char ** argv)380 clobber(char **argv)
381 {
382 int times;
383
384 if (argv[0] == 0)
385 times = 1;
386 else
387 times = (atoi(argv[0]) + 511) / 512;
388 clob1(times);
389 return (0);
390 }
391
392 /*
393 * Clobber the stack.
394 */
395 void
clob1(int n)396 clob1(int n)
397 {
398 char buf[512];
399 char *cp;
400
401 if (n <= 0)
402 return;
403 for (cp = buf; cp < &buf[512]; *cp++ = 0xFF)
404 ;
405 clob1(n - 1);
406 }
407
408 /*
409 * Add the given header fields to the retained list.
410 * If no arguments, print the current list of retained fields.
411 */
412 int
retfield(char * list[])413 retfield(char *list[])
414 {
415
416 return (ignore1(list, ignore + 1, "retained"));
417 }
418
419 /*
420 * Add the given header fields to the ignored list.
421 * If no arguments, print the current list of ignored fields.
422 */
423 int
igfield(char * list[])424 igfield(char *list[])
425 {
426
427 return (ignore1(list, ignore, "ignored"));
428 }
429
430 int
saveretfield(char * list[])431 saveretfield(char *list[])
432 {
433
434 return (ignore1(list, saveignore + 1, "retained"));
435 }
436
437 int
saveigfield(char * list[])438 saveigfield(char *list[])
439 {
440
441 return (ignore1(list, saveignore, "ignored"));
442 }
443
444 int
ignore1(char * list[],struct ignoretab * tab,const char * which)445 ignore1(char *list[], struct ignoretab *tab, const char *which)
446 {
447 char field[LINESIZE];
448 int h;
449 struct ignore *igp;
450 char **ap;
451
452 if (*list == NULL)
453 return (igshow(tab, which));
454 for (ap = list; *ap != 0; ap++) {
455 istrncpy(field, *ap, sizeof(field));
456 if (member(field, tab))
457 continue;
458 h = hash(field);
459 igp = calloc(1, sizeof(struct ignore));
460 igp->i_field = calloc((unsigned)strlen(field) + 1,
461 sizeof(char));
462 strcpy(igp->i_field, field);
463 igp->i_link = tab->i_head[h];
464 tab->i_head[h] = igp;
465 tab->i_count++;
466 }
467 return (0);
468 }
469
470 /*
471 * Print out all currently retained fields.
472 */
473 int
igshow(struct ignoretab * tab,const char * which)474 igshow(struct ignoretab *tab, const char *which)
475 {
476 int h;
477 struct ignore *igp;
478 char **ap, **ring;
479
480 if (tab->i_count == 0) {
481 printf("No fields currently being %s.\n", which);
482 return (0);
483 }
484 ring = (char **)salloc((tab->i_count + 1) * sizeof(char *));
485 ap = ring;
486 for (h = 0; h < HSHSIZE; h++)
487 for (igp = tab->i_head[h]; igp != NULL; igp = igp->i_link)
488 *ap++ = igp->i_field;
489 *ap = 0;
490 qsort(ring, tab->i_count, sizeof(char *), igcomp);
491 for (ap = ring; *ap != 0; ap++)
492 printf("%s\n", *ap);
493 return (0);
494 }
495
496 /*
497 * Compare two names for sorting ignored field list.
498 */
499 int
igcomp(const void * l,const void * r)500 igcomp(const void *l, const void *r)
501 {
502
503 return (strcmp(*(const char **)l, *(const char **)r));
504 }
505