Commit | Line | Data |
---|---|---|
9c422e1e WJ |
1 | /*- |
2 | * Copyright (c) 1980 The Regents of the University of California. | |
3 | * 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 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)msgs.c 5.8 (Berkeley) 2/4/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | /* | |
45 | * msgs - a user bulletin board program | |
46 | * | |
47 | * usage: | |
48 | * msgs [fhlopq] [[-]number] to read messages | |
49 | * msgs -s to place messages | |
50 | * msgs -c [-days] to clean up the bulletin board | |
51 | * | |
52 | * prompt commands are: | |
53 | * y print message | |
54 | * n flush message, go to next message | |
55 | * q flush message, quit | |
56 | * p print message, turn on 'pipe thru more' mode | |
57 | * P print message, turn off 'pipe thru more' mode | |
58 | * - reprint last message | |
59 | * s[-][<num>] [<filename>] save message | |
60 | * m[-][<num>] mail with message in temp mbox | |
61 | * x exit without flushing this message | |
62 | * <num> print message number <num> | |
63 | */ | |
64 | ||
65 | #define V7 /* will look for TERM in the environment */ | |
66 | #define OBJECT /* will object to messages without Subjects */ | |
67 | /* #define REJECT /* will reject messages without Subjects | |
68 | (OBJECT must be defined also) */ | |
69 | /* #define UNBUFFERED /* use unbuffered output */ | |
70 | ||
71 | #include <sys/param.h> | |
72 | #include <sys/dir.h> | |
73 | #include <sys/stat.h> | |
74 | #include <ctype.h> | |
75 | #include <errno.h> | |
76 | #include <pwd.h> | |
77 | #include <setjmp.h> | |
78 | #include <sgtty.h> | |
79 | #include <signal.h> | |
80 | #include <stdio.h> | |
81 | #include <stdlib.h> | |
82 | #include <string.h> | |
83 | #include <time.h> | |
84 | #include "pathnames.h" | |
85 | ||
86 | #define CMODE 0666 /* bounds file creation mode */ | |
87 | #define NO 0 | |
88 | #define YES 1 | |
89 | #define SUPERUSER 0 /* superuser uid */ | |
90 | #define DAEMON 1 /* daemon uid */ | |
91 | #define NLINES 24 /* default number of lines/crt screen */ | |
92 | #define NDAYS 21 /* default keep time for messages */ | |
93 | #define DAYS *24*60*60 /* seconds/day */ | |
94 | #define MSGSRC ".msgsrc" /* user's rc file */ | |
95 | #define BOUNDS "bounds" /* message bounds file */ | |
96 | #define NEXT "Next message? [yq]" | |
97 | #define MORE "More? [ynq]" | |
98 | #define NOMORE "(No more) [q] ?" | |
99 | ||
100 | typedef char bool; | |
101 | ||
102 | FILE *msgsrc; | |
103 | FILE *newmsg; | |
104 | char *sep = "-"; | |
105 | char inbuf[BUFSIZ]; | |
106 | char fname[128]; | |
107 | char cmdbuf[128]; | |
108 | char subj[128]; | |
109 | char from[128]; | |
110 | char date[128]; | |
111 | char *ptr; | |
112 | char *in; | |
113 | bool local; | |
114 | bool ruptible; | |
115 | bool totty; | |
116 | bool seenfrom; | |
117 | bool seensubj; | |
118 | bool blankline; | |
119 | bool printing = NO; | |
120 | bool mailing = NO; | |
121 | bool quitit = NO; | |
122 | bool sending = NO; | |
123 | bool intrpflg = NO; | |
124 | int uid; | |
125 | int msg; | |
126 | int prevmsg; | |
127 | int lct; | |
128 | int nlines; | |
129 | int Lpp = 0; | |
130 | time_t t; | |
131 | time_t keep; | |
132 | struct sgttyb otty; | |
133 | ||
134 | char *mktemp(); | |
135 | char *nxtfld(); | |
136 | void onintr(); | |
137 | void onsusp(); | |
138 | ||
139 | /* option initialization */ | |
140 | bool hdrs = NO; | |
141 | bool qopt = NO; | |
142 | bool hush = NO; | |
143 | bool send_msg = NO; | |
144 | bool locomode = NO; | |
145 | bool use_pager = NO; | |
146 | bool clean = NO; | |
147 | bool lastcmd = NO; | |
148 | jmp_buf tstpbuf; | |
149 | ||
150 | main(argc, argv) | |
151 | int argc; char *argv[]; | |
152 | { | |
153 | bool newrc, already; | |
154 | int rcfirst = 0; /* first message to print (from .rc) */ | |
155 | int rcback = 0; /* amount to back off of rcfirst */ | |
156 | int firstmsg, nextmsg, lastmsg = 0; | |
157 | int blast = 0; | |
158 | FILE *bounds; | |
159 | ||
160 | #ifdef UNBUFFERED | |
161 | setbuf(stdout, NULL); | |
162 | #endif | |
163 | ||
164 | gtty(fileno(stdout), &otty); | |
165 | time(&t); | |
166 | setuid(uid = getuid()); | |
167 | ruptible = (signal(SIGINT, SIG_IGN) == SIG_DFL); | |
168 | if (ruptible) | |
169 | signal(SIGINT, SIG_DFL); | |
170 | ||
171 | argc--, argv++; | |
172 | while (argc > 0) { | |
173 | if (isdigit(argv[0][0])) { /* starting message # */ | |
174 | rcfirst = atoi(argv[0]); | |
175 | } | |
176 | else if (isdigit(argv[0][1])) { /* backward offset */ | |
177 | rcback = atoi( &( argv[0][1] ) ); | |
178 | } | |
179 | else { | |
180 | ptr = *argv; | |
181 | while (*ptr) switch (*ptr++) { | |
182 | ||
183 | case '-': | |
184 | break; | |
185 | ||
186 | case 'c': | |
187 | if (uid != SUPERUSER && uid != DAEMON) { | |
188 | fprintf(stderr, "Sorry\n"); | |
189 | exit(1); | |
190 | } | |
191 | clean = YES; | |
192 | break; | |
193 | ||
194 | case 'f': /* silently */ | |
195 | hush = YES; | |
196 | break; | |
197 | ||
198 | case 'h': /* headers only */ | |
199 | hdrs = YES; | |
200 | break; | |
201 | ||
202 | case 'l': /* local msgs only */ | |
203 | locomode = YES; | |
204 | break; | |
205 | ||
206 | case 'o': /* option to save last message */ | |
207 | lastcmd = YES; | |
208 | break; | |
209 | ||
210 | case 'p': /* pipe thru 'more' during long msgs */ | |
211 | use_pager = YES; | |
212 | break; | |
213 | ||
214 | case 'q': /* query only */ | |
215 | qopt = YES; | |
216 | break; | |
217 | ||
218 | case 's': /* sending TO msgs */ | |
219 | send_msg = YES; | |
220 | break; | |
221 | ||
222 | default: | |
223 | fprintf(stderr, | |
224 | "usage: msgs [fhlopq] [[-]number]\n"); | |
225 | exit(1); | |
226 | } | |
227 | } | |
228 | argc--, argv++; | |
229 | } | |
230 | ||
231 | /* | |
232 | * determine current message bounds | |
233 | */ | |
234 | sprintf(fname, "%s/%s", _PATH_MSGS, BOUNDS); | |
235 | bounds = fopen(fname, "r"); | |
236 | ||
237 | if (bounds != NULL) { | |
238 | fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg); | |
239 | fclose(bounds); | |
240 | blast = lastmsg; /* save upper bound */ | |
241 | } | |
242 | ||
243 | if (clean) | |
244 | keep = t - (rcback? rcback : NDAYS) DAYS; | |
245 | ||
246 | if (clean || bounds == NULL) { /* relocate message bounds */ | |
247 | struct direct *dp; | |
248 | struct stat stbuf; | |
249 | bool seenany = NO; | |
250 | DIR *dirp; | |
251 | ||
252 | dirp = opendir(_PATH_MSGS); | |
253 | if (dirp == NULL) { | |
254 | perror(_PATH_MSGS); | |
255 | exit(errno); | |
256 | } | |
257 | ||
258 | firstmsg = 32767; | |
259 | lastmsg = 0; | |
260 | ||
261 | for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){ | |
262 | register char *cp = dp->d_name; | |
263 | register int i = 0; | |
264 | ||
265 | if (dp->d_ino == 0) | |
266 | continue; | |
267 | if (dp->d_namlen == 0) | |
268 | continue; | |
269 | ||
270 | if (clean) | |
271 | sprintf(inbuf, "%s/%s", _PATH_MSGS, cp); | |
272 | ||
273 | while (isdigit(*cp)) | |
274 | i = i * 10 + *cp++ - '0'; | |
275 | if (*cp) | |
276 | continue; /* not a message! */ | |
277 | ||
278 | if (clean) { | |
279 | if (stat(inbuf, &stbuf) != 0) | |
280 | continue; | |
281 | if (stbuf.st_mtime < keep | |
282 | && stbuf.st_mode&S_IWRITE) { | |
283 | unlink(inbuf); | |
284 | continue; | |
285 | } | |
286 | } | |
287 | ||
288 | if (i > lastmsg) | |
289 | lastmsg = i; | |
290 | if (i < firstmsg) | |
291 | firstmsg = i; | |
292 | seenany = YES; | |
293 | } | |
294 | closedir(dirp); | |
295 | ||
296 | if (!seenany) { | |
297 | if (blast != 0) /* never lower the upper bound! */ | |
298 | lastmsg = blast; | |
299 | firstmsg = lastmsg + 1; | |
300 | } | |
301 | else if (blast > lastmsg) | |
302 | lastmsg = blast; | |
303 | ||
304 | if (!send_msg) { | |
305 | bounds = fopen(fname, "w"); | |
306 | if (bounds == NULL) { | |
307 | perror(fname); | |
308 | exit(errno); | |
309 | } | |
310 | chmod(fname, CMODE); | |
311 | fprintf(bounds, "%d %d\n", firstmsg, lastmsg); | |
312 | fclose(bounds); | |
313 | } | |
314 | } | |
315 | ||
316 | if (send_msg) { | |
317 | /* | |
318 | * Send mode - place msgs in _PATH_MSGS | |
319 | */ | |
320 | bounds = fopen(fname, "w"); | |
321 | if (bounds == NULL) { | |
322 | perror(fname); | |
323 | exit(errno); | |
324 | } | |
325 | ||
326 | nextmsg = lastmsg + 1; | |
327 | sprintf(fname, "%s/%d", _PATH_MSGS, nextmsg); | |
328 | newmsg = fopen(fname, "w"); | |
329 | if (newmsg == NULL) { | |
330 | perror(fname); | |
331 | exit(errno); | |
332 | } | |
333 | chmod(fname, 0644); | |
334 | ||
335 | fprintf(bounds, "%d %d\n", firstmsg, nextmsg); | |
336 | fclose(bounds); | |
337 | ||
338 | sending = YES; | |
339 | if (ruptible) | |
340 | signal(SIGINT, onintr); | |
341 | ||
342 | if (isatty(fileno(stdin))) { | |
343 | ptr = getpwuid(uid)->pw_name; | |
344 | printf("Message %d:\nFrom %s %sSubject: ", | |
345 | nextmsg, ptr, ctime(&t)); | |
346 | fflush(stdout); | |
347 | fgets(inbuf, sizeof inbuf, stdin); | |
348 | putchar('\n'); | |
349 | fflush(stdout); | |
350 | fprintf(newmsg, "From %s %sSubject: %s\n", | |
351 | ptr, ctime(&t), inbuf); | |
352 | blankline = seensubj = YES; | |
353 | } | |
354 | else | |
355 | blankline = seensubj = NO; | |
356 | for (;;) { | |
357 | fgets(inbuf, sizeof inbuf, stdin); | |
358 | if (feof(stdin) || ferror(stdin)) | |
359 | break; | |
360 | blankline = (blankline || (inbuf[0] == '\n')); | |
361 | seensubj = (seensubj || (!blankline && (strncmp(inbuf, "Subj", 4) == 0))); | |
362 | fputs(inbuf, newmsg); | |
363 | } | |
364 | #ifdef OBJECT | |
365 | if (!seensubj) { | |
366 | printf("NOTICE: Messages should have a Subject field!\n"); | |
367 | #ifdef REJECT | |
368 | unlink(fname); | |
369 | #endif | |
370 | exit(1); | |
371 | } | |
372 | #endif | |
373 | exit(ferror(stdin)); | |
374 | } | |
375 | if (clean) | |
376 | exit(0); | |
377 | ||
378 | /* | |
379 | * prepare to display messages | |
380 | */ | |
381 | totty = (isatty(fileno(stdout)) != 0); | |
382 | use_pager = use_pager && totty; | |
383 | ||
384 | sprintf(fname, "%s/%s", getenv("HOME"), MSGSRC); | |
385 | msgsrc = fopen(fname, "r"); | |
386 | if (msgsrc) { | |
387 | newrc = NO; | |
388 | fscanf(msgsrc, "%d\n", &nextmsg); | |
389 | fclose(msgsrc); | |
390 | if (nextmsg > lastmsg+1) { | |
391 | printf("Warning: bounds have been reset (%d, %d)\n", | |
392 | firstmsg, lastmsg); | |
393 | truncate(fname, (off_t)0); | |
394 | newrc = YES; | |
395 | } | |
396 | else if (!rcfirst) | |
397 | rcfirst = nextmsg - rcback; | |
398 | } | |
399 | else | |
400 | newrc = YES; | |
401 | msgsrc = fopen(fname, "a"); | |
402 | if (msgsrc == NULL) { | |
403 | perror(fname); | |
404 | exit(errno); | |
405 | } | |
406 | if (rcfirst) { | |
407 | if (rcfirst > lastmsg+1) { | |
408 | printf("Warning: the last message is number %d.\n", | |
409 | lastmsg); | |
410 | rcfirst = nextmsg; | |
411 | } | |
412 | if (rcfirst > firstmsg) | |
413 | firstmsg = rcfirst; /* don't set below first msg */ | |
414 | } | |
415 | if (newrc) { | |
416 | nextmsg = firstmsg; | |
417 | fseek(msgsrc, 0L, 0); | |
418 | fprintf(msgsrc, "%d\n", nextmsg); | |
419 | fflush(msgsrc); | |
420 | } | |
421 | ||
422 | #ifdef V7 | |
423 | if (totty) { | |
424 | struct winsize win; | |
425 | if (ioctl(fileno(stdout), TIOCGWINSZ, &win) != -1) | |
426 | Lpp = win.ws_row; | |
427 | if (Lpp <= 0) { | |
428 | if (tgetent(inbuf, getenv("TERM")) <= 0 | |
429 | || (Lpp = tgetnum("li")) <= 0) { | |
430 | Lpp = NLINES; | |
431 | } | |
432 | } | |
433 | } | |
434 | #endif | |
435 | Lpp -= 6; /* for headers, etc. */ | |
436 | ||
437 | already = NO; | |
438 | prevmsg = firstmsg; | |
439 | printing = YES; | |
440 | if (ruptible) | |
441 | signal(SIGINT, onintr); | |
442 | ||
443 | /* | |
444 | * Main program loop | |
445 | */ | |
446 | for (msg = firstmsg; msg <= lastmsg; msg++) { | |
447 | ||
448 | sprintf(fname, "%s/%d", _PATH_MSGS, msg); | |
449 | newmsg = fopen(fname, "r"); | |
450 | if (newmsg == NULL) | |
451 | continue; | |
452 | ||
453 | gfrsub(newmsg); /* get From and Subject fields */ | |
454 | if (locomode && !local) { | |
455 | fclose(newmsg); | |
456 | continue; | |
457 | } | |
458 | ||
459 | if (qopt) { /* This has to be located here */ | |
460 | printf("There are new messages.\n"); | |
461 | exit(0); | |
462 | } | |
463 | ||
464 | if (already && !hdrs) | |
465 | putchar('\n'); | |
466 | ||
467 | /* | |
468 | * Print header | |
469 | */ | |
470 | if (totty) | |
471 | signal(SIGTSTP, onsusp); | |
472 | (void) setjmp(tstpbuf); | |
473 | already = YES; | |
474 | nlines = 2; | |
475 | if (seenfrom) { | |
476 | printf("Message %d:\nFrom %s %s", msg, from, date); | |
477 | nlines++; | |
478 | } | |
479 | if (seensubj) { | |
480 | printf("Subject: %s", subj); | |
481 | nlines++; | |
482 | } | |
483 | else { | |
484 | if (seenfrom) { | |
485 | putchar('\n'); | |
486 | nlines++; | |
487 | } | |
488 | while (nlines < 6 | |
489 | && fgets(inbuf, sizeof inbuf, newmsg) | |
490 | && inbuf[0] != '\n') { | |
491 | fputs(inbuf, stdout); | |
492 | nlines++; | |
493 | } | |
494 | } | |
495 | ||
496 | lct = linecnt(newmsg); | |
497 | if (lct) | |
498 | printf("(%d%slines) ", lct, seensubj? " " : " more "); | |
499 | ||
500 | if (hdrs) { | |
501 | printf("\n-----\n"); | |
502 | fclose(newmsg); | |
503 | continue; | |
504 | } | |
505 | ||
506 | /* | |
507 | * Ask user for command | |
508 | */ | |
509 | if (totty) | |
510 | ask(lct? MORE : (msg==lastmsg? NOMORE : NEXT)); | |
511 | else | |
512 | inbuf[0] = 'y'; | |
513 | if (totty) | |
514 | signal(SIGTSTP, SIG_DFL); | |
515 | cmnd: | |
516 | in = inbuf; | |
517 | switch (*in) { | |
518 | case 'x': | |
519 | case 'X': | |
520 | exit(0); | |
521 | ||
522 | case 'q': | |
523 | case 'Q': | |
524 | quitit = YES; | |
525 | printf("--Postponed--\n"); | |
526 | exit(0); | |
527 | /* intentional fall-thru */ | |
528 | case 'n': | |
529 | case 'N': | |
530 | if (msg >= nextmsg) sep = "Flushed"; | |
531 | prevmsg = msg; | |
532 | break; | |
533 | ||
534 | case 'p': | |
535 | case 'P': | |
536 | use_pager = (*in++ == 'p'); | |
537 | /* intentional fallthru */ | |
538 | case '\n': | |
539 | case 'y': | |
540 | default: | |
541 | if (*in == '-') { | |
542 | msg = prevmsg-1; | |
543 | sep = "replay"; | |
544 | break; | |
545 | } | |
546 | if (isdigit(*in)) { | |
547 | msg = next(in); | |
548 | sep = in; | |
549 | break; | |
550 | } | |
551 | ||
552 | prmesg(nlines + lct + (seensubj? 1 : 0)); | |
553 | prevmsg = msg; | |
554 | ||
555 | } | |
556 | ||
557 | printf("--%s--\n", sep); | |
558 | sep = "-"; | |
559 | if (msg >= nextmsg) { | |
560 | nextmsg = msg + 1; | |
561 | fseek(msgsrc, 0L, 0); | |
562 | fprintf(msgsrc, "%d\n", nextmsg); | |
563 | fflush(msgsrc); | |
564 | } | |
565 | if (newmsg) | |
566 | fclose(newmsg); | |
567 | if (quitit) | |
568 | break; | |
569 | } | |
570 | ||
571 | /* | |
572 | * Make sure .rc file gets updated | |
573 | */ | |
574 | if (--msg >= nextmsg) { | |
575 | nextmsg = msg + 1; | |
576 | fseek(msgsrc, 0L, 0); | |
577 | fprintf(msgsrc, "%d\n", nextmsg); | |
578 | fflush(msgsrc); | |
579 | } | |
580 | if (already && !quitit && lastcmd && totty) { | |
581 | /* | |
582 | * save or reply to last message? | |
583 | */ | |
584 | msg = prevmsg; | |
585 | ask(NOMORE); | |
586 | if (inbuf[0] == '-' || isdigit(inbuf[0])) | |
587 | goto cmnd; | |
588 | } | |
589 | if (!(already || hush || qopt)) | |
590 | printf("No new messages.\n"); | |
591 | exit(0); | |
592 | } | |
593 | ||
594 | prmesg(length) | |
595 | int length; | |
596 | { | |
597 | FILE *outf; | |
598 | ||
599 | if (use_pager && length > Lpp) { | |
600 | signal(SIGPIPE, SIG_IGN); | |
601 | signal(SIGQUIT, SIG_IGN); | |
602 | sprintf(cmdbuf, _PATH_PAGER, Lpp); | |
603 | outf = popen(cmdbuf, "w"); | |
604 | if (!outf) | |
605 | outf = stdout; | |
606 | else | |
607 | setbuf(outf, (char *)NULL); | |
608 | } | |
609 | else | |
610 | outf = stdout; | |
611 | ||
612 | if (seensubj) | |
613 | putc('\n', outf); | |
614 | ||
615 | while (fgets(inbuf, sizeof inbuf, newmsg)) { | |
616 | fputs(inbuf, outf); | |
617 | if (ferror(outf)) { | |
618 | clearerr(outf); | |
619 | break; | |
620 | } | |
621 | } | |
622 | ||
623 | if (outf != stdout) { | |
624 | pclose(outf); | |
625 | signal(SIGPIPE, SIG_DFL); | |
626 | signal(SIGQUIT, SIG_DFL); | |
627 | } | |
628 | else { | |
629 | fflush(stdout); | |
630 | } | |
631 | ||
632 | /* trick to force wait on output */ | |
633 | stty(fileno(stdout), &otty); | |
634 | } | |
635 | ||
636 | void | |
637 | onintr() | |
638 | { | |
639 | signal(SIGINT, onintr); | |
640 | if (mailing) | |
641 | unlink(fname); | |
642 | if (sending) { | |
643 | unlink(fname); | |
644 | puts("--Killed--"); | |
645 | exit(1); | |
646 | } | |
647 | if (printing) { | |
648 | putchar('\n'); | |
649 | if (hdrs) | |
650 | exit(0); | |
651 | sep = "Interrupt"; | |
652 | if (newmsg) | |
653 | fseek(newmsg, 0L, 2); | |
654 | intrpflg = YES; | |
655 | } | |
656 | } | |
657 | ||
658 | /* | |
659 | * We have just gotten a susp. Suspend and prepare to resume. | |
660 | */ | |
661 | void | |
662 | onsusp() | |
663 | { | |
664 | ||
665 | signal(SIGTSTP, SIG_DFL); | |
666 | sigsetmask(0); | |
667 | kill(0, SIGTSTP); | |
668 | signal(SIGTSTP, onsusp); | |
669 | if (!mailing) | |
670 | longjmp(tstpbuf, 0); | |
671 | } | |
672 | ||
673 | linecnt(f) | |
674 | FILE *f; | |
675 | { | |
676 | off_t oldpos = ftell(f); | |
677 | int l = 0; | |
678 | char lbuf[BUFSIZ]; | |
679 | ||
680 | while (fgets(lbuf, sizeof lbuf, f)) | |
681 | l++; | |
682 | clearerr(f); | |
683 | fseek(f, oldpos, 0); | |
684 | return (l); | |
685 | } | |
686 | ||
687 | next(buf) | |
688 | char *buf; | |
689 | { | |
690 | int i; | |
691 | sscanf(buf, "%d", &i); | |
692 | sprintf(buf, "Goto %d", i); | |
693 | return(--i); | |
694 | } | |
695 | ||
696 | ask(prompt) | |
697 | char *prompt; | |
698 | { | |
699 | char inch; | |
700 | int n, cmsg; | |
701 | off_t oldpos; | |
702 | FILE *cpfrom, *cpto; | |
703 | ||
704 | printf("%s ", prompt); | |
705 | fflush(stdout); | |
706 | intrpflg = NO; | |
707 | (void) fgets(inbuf, sizeof inbuf, stdin); | |
708 | if ((n = strlen(inbuf)) > 0 && inbuf[n - 1] == '\n') | |
709 | inbuf[n - 1] = '\0'; | |
710 | if (intrpflg) | |
711 | inbuf[0] = 'x'; | |
712 | ||
713 | /* | |
714 | * Handle 'mail' and 'save' here. | |
715 | */ | |
716 | if ((inch = inbuf[0]) == 's' || inch == 'm') { | |
717 | if (inbuf[1] == '-') | |
718 | cmsg = prevmsg; | |
719 | else if (isdigit(inbuf[1])) | |
720 | cmsg = atoi(&inbuf[1]); | |
721 | else | |
722 | cmsg = msg; | |
723 | sprintf(fname, "%s/%d", _PATH_MSGS, cmsg); | |
724 | ||
725 | oldpos = ftell(newmsg); | |
726 | ||
727 | cpfrom = fopen(fname, "r"); | |
728 | if (!cpfrom) { | |
729 | printf("Message %d not found\n", cmsg); | |
730 | ask (prompt); | |
731 | return; | |
732 | } | |
733 | ||
734 | if (inch == 's') { | |
735 | in = nxtfld(inbuf); | |
736 | if (*in) { | |
737 | for (n=0; in[n] > ' '; n++) { /* sizeof fname? */ | |
738 | fname[n] = in[n]; | |
739 | } | |
740 | fname[n] = NULL; | |
741 | } | |
742 | else | |
743 | strcpy(fname, "Messages"); | |
744 | } | |
745 | else { | |
746 | strcpy(fname, _PATH_TMP); | |
747 | mktemp(fname); | |
748 | sprintf(cmdbuf, _PATH_MAIL, fname); | |
749 | mailing = YES; | |
750 | } | |
751 | cpto = fopen(fname, "a"); | |
752 | if (!cpto) { | |
753 | perror(fname); | |
754 | mailing = NO; | |
755 | fseek(newmsg, oldpos, 0); | |
756 | ask(prompt); | |
757 | return; | |
758 | } | |
759 | ||
760 | while (n = fread(inbuf, 1, sizeof inbuf, cpfrom)) | |
761 | fwrite(inbuf, 1, n, cpto); | |
762 | ||
763 | fclose(cpfrom); | |
764 | fclose(cpto); | |
765 | fseek(newmsg, oldpos, 0); /* reposition current message */ | |
766 | if (inch == 's') | |
767 | printf("Message %d saved in \"%s\"\n", cmsg, fname); | |
768 | else { | |
769 | system(cmdbuf); | |
770 | unlink(fname); | |
771 | mailing = NO; | |
772 | } | |
773 | ask(prompt); | |
774 | } | |
775 | } | |
776 | ||
777 | gfrsub(infile) | |
778 | FILE *infile; | |
779 | { | |
780 | off_t frompos; | |
781 | ||
782 | seensubj = seenfrom = NO; | |
783 | local = YES; | |
784 | subj[0] = from[0] = date[0] = NULL; | |
785 | ||
786 | /* | |
787 | * Is this a normal message? | |
788 | */ | |
789 | if (fgets(inbuf, sizeof inbuf, infile)) { | |
790 | if (strncmp(inbuf, "From", 4)==0) { | |
791 | /* | |
792 | * expected form starts with From | |
793 | */ | |
794 | seenfrom = YES; | |
795 | frompos = ftell(infile); | |
796 | ptr = from; | |
797 | in = nxtfld(inbuf); | |
798 | if (*in) while (*in && *in > ' ') { | |
799 | if (*in == ':' || *in == '@' || *in == '!') | |
800 | local = NO; | |
801 | *ptr++ = *in++; | |
802 | /* what about sizeof from ? */ | |
803 | } | |
804 | *ptr = NULL; | |
805 | if (*(in = nxtfld(in))) | |
806 | strncpy(date, in, sizeof date); | |
807 | else { | |
808 | date[0] = '\n'; | |
809 | date[1] = NULL; | |
810 | } | |
811 | } | |
812 | else { | |
813 | /* | |
814 | * not the expected form | |
815 | */ | |
816 | fseek(infile, 0L, 0); | |
817 | return; | |
818 | } | |
819 | } | |
820 | else | |
821 | /* | |
822 | * empty file ? | |
823 | */ | |
824 | return; | |
825 | ||
826 | /* | |
827 | * look for Subject line until EOF or a blank line | |
828 | */ | |
829 | while (fgets(inbuf, sizeof inbuf, infile) | |
830 | && !(blankline = (inbuf[0] == '\n'))) { | |
831 | /* | |
832 | * extract Subject line | |
833 | */ | |
834 | if (!seensubj && strncmp(inbuf, "Subj", 4)==0) { | |
835 | seensubj = YES; | |
836 | frompos = ftell(infile); | |
837 | strncpy(subj, nxtfld(inbuf), sizeof subj); | |
838 | } | |
839 | } | |
840 | if (!blankline) | |
841 | /* | |
842 | * ran into EOF | |
843 | */ | |
844 | fseek(infile, frompos, 0); | |
845 | ||
846 | if (!seensubj) | |
847 | /* | |
848 | * for possible use with Mail | |
849 | */ | |
850 | strncpy(subj, "(No Subject)\n", sizeof subj); | |
851 | } | |
852 | ||
853 | char * | |
854 | nxtfld(s) | |
855 | char *s; | |
856 | { | |
857 | if (*s) while (*s && *s > ' ') s++; /* skip over this field */ | |
858 | if (*s) while (*s && *s <= ' ') s++; /* find start of next field */ | |
859 | return (s); | |
860 | } |