Commit | Line | Data |
---|---|---|
06300dd9 KS |
1 | # |
2 | ||
3 | /* | |
4 | * Mail -- a mail program | |
5 | * | |
6 | * Collect input from standard input, handling | |
7 | * ~ escapes. | |
8 | */ | |
9 | ||
10 | static char *SccsId = "@(#)collect.c 1.1 %G%"; | |
11 | ||
12 | #include "rcv.h" | |
13 | #include <sys/stat.h> | |
14 | ||
15 | /* | |
16 | * Read a message from standard output and return a read file to it | |
17 | * or NULL on error. | |
18 | */ | |
19 | ||
20 | /* | |
21 | * The following hokiness with global variables is so that on | |
22 | * receipt of an interrupt signal, the partial message can be salted | |
23 | * away on dead.letter. The output file must be available to flush, | |
24 | * and the input to read. Several open files could be saved all through | |
25 | * Mail if stdio allowed simultaneous read/write access. | |
26 | */ | |
27 | ||
28 | static int (*savesig)(); /* Previous SIGINT value */ | |
29 | static FILE *newi; /* File for saving away */ | |
30 | static FILE *newo; /* Output side of same */ | |
31 | static int hf; /* Ignore interrups */ | |
32 | static int nofault; /* Soft signal if set */ | |
33 | static int hadintr; /* Have seen one SIGINT so far */ | |
34 | ||
35 | static jmp_buf coljmp; /* To get back to work */ | |
36 | ||
37 | FILE * | |
38 | collect(hp) | |
39 | struct header *hp; | |
40 | { | |
41 | FILE *ibuf, *fbuf, *obuf; | |
42 | int lc, cc, escape, collrub(), intack(), stopdot; | |
43 | register int c, t; | |
44 | char linebuf[LINESIZE], *cp; | |
45 | extern char tempMail[]; | |
46 | ||
47 | noreset++; | |
48 | stopdot = (value("dot") != NOSTR) && intty; | |
49 | ibuf = obuf = NULL; | |
50 | if (value("ignore") != NOSTR) | |
51 | hf = 1; | |
52 | else | |
53 | hf = 0; | |
54 | nofault = 1; | |
55 | hadintr = 0; | |
56 | if ((savesig = signal(SIGINT, SIG_IGN)) != SIG_IGN) | |
57 | signal(SIGINT, hf ? intack : collrub); | |
58 | newi = NULL; | |
59 | newo = NULL; | |
60 | if ((obuf = fopen(tempMail, "w")) == NULL) { | |
61 | perror(tempMail); | |
62 | goto err; | |
63 | } | |
64 | newo = obuf; | |
65 | if ((ibuf = fopen(tempMail, "r")) == NULL) { | |
66 | perror(tempMail); | |
67 | newo = NULL; | |
68 | fclose(obuf); | |
69 | goto err; | |
70 | } | |
71 | newi = ibuf; | |
72 | remove(tempMail); | |
73 | ||
74 | /* | |
75 | * If we are going to prompt for a subject, | |
76 | * refrain from printing a newline after | |
77 | * the headers (since some people mind). | |
78 | */ | |
79 | ||
80 | t = GTO|GSUBJECT|GCC|GNL; | |
81 | c = 0; | |
82 | if (intty && sflag == NOSTR && hp->h_subject == NOSTR && value("ask")) | |
83 | t &= ~GNL, c++; | |
84 | if (hp->h_seq != 0) { | |
85 | puthead(hp, stdout, t); | |
86 | fflush(stdout); | |
87 | } | |
88 | if (c) | |
89 | grabh(hp, GSUBJECT); | |
90 | escape = ESCAPE; | |
91 | if ((cp = value("escape")) != NOSTR) | |
92 | escape = *cp; | |
93 | for (;;) { | |
94 | setjmp(coljmp); | |
95 | nofault = 0; | |
96 | flush(); | |
97 | if (readline(stdin, linebuf) <= 0) | |
98 | break; | |
99 | hadintr = 0; | |
100 | if (stopdot && equal(".", linebuf)) | |
101 | break; | |
102 | if (linebuf[0] != escape || | |
103 | (!intty && value("henry") == NOSTR)) { | |
104 | if ((t = putline(obuf, linebuf)) < 0) | |
105 | goto err; | |
106 | continue; | |
107 | } | |
108 | c = linebuf[1]; | |
109 | nofault= 0; | |
110 | switch (c) { | |
111 | default: | |
112 | /* | |
113 | * On double escape, just send the single one. | |
114 | * Otherwise, it's an error. | |
115 | */ | |
116 | ||
117 | if (c == escape) { | |
118 | if (putline(obuf, &linebuf[1]) < 0) | |
119 | goto err; | |
120 | else | |
121 | break; | |
122 | } | |
123 | printf("Unknown tilde escape.\n"); | |
124 | break; | |
125 | ||
126 | case 'C': | |
127 | /* | |
128 | * Dump core. | |
129 | */ | |
130 | ||
131 | core(); | |
132 | break; | |
133 | ||
134 | case '!': | |
135 | /* | |
136 | * Shell escape, send the balance of the | |
137 | * line to sh -c. | |
138 | */ | |
139 | ||
140 | shell(&linebuf[2]); | |
141 | break; | |
142 | ||
143 | case ':': | |
144 | case '_': | |
145 | /* | |
146 | * Escape to command mode, but be nice! | |
147 | */ | |
148 | ||
149 | nofault = 0; | |
150 | execute(&linebuf[2]); | |
151 | break; | |
152 | ||
153 | case '.': | |
154 | /* | |
155 | * Simulate end of file on input. | |
156 | */ | |
157 | goto eof; | |
158 | ||
159 | case 'q': | |
160 | case 'Q': | |
161 | /* | |
162 | * Force a quit of sending mail. | |
163 | * Act like an interrupt happened. | |
164 | */ | |
165 | ||
166 | nofault = 0; | |
167 | hadintr++; | |
168 | collrub(SIGINT); | |
169 | exit(1); | |
170 | ||
171 | case 'h': | |
172 | /* | |
173 | * Grab a bunch of headers. | |
174 | */ | |
175 | if (!intty || !outtty) { | |
176 | printf("~h: no can do!?\n"); | |
177 | break; | |
178 | } | |
179 | grabh(hp, GTO|GSUBJECT|GCC|GBCC); | |
180 | printf("(continue)\n"); | |
181 | break; | |
182 | ||
183 | case 't': | |
184 | /* | |
185 | * Add to the To list. | |
186 | */ | |
187 | ||
188 | hp->h_to = addto(hp->h_to, &linebuf[2]); | |
189 | hp->h_seq++; | |
190 | break; | |
191 | ||
192 | case 's': | |
193 | /* | |
194 | * Set the Subject list. | |
195 | */ | |
196 | ||
197 | cp = &linebuf[2]; | |
198 | while (any(*cp, " \t")) | |
199 | cp++; | |
200 | hp->h_subject = savestr(cp); | |
201 | hp->h_seq++; | |
202 | break; | |
203 | ||
204 | case 'c': | |
205 | /* | |
206 | * Add to the CC list. | |
207 | */ | |
208 | ||
209 | hp->h_cc = addto(hp->h_cc, &linebuf[2]); | |
210 | hp->h_seq++; | |
211 | break; | |
212 | ||
213 | case 'b': | |
214 | /* | |
215 | * Add stuff to blind carbon copies list. | |
216 | */ | |
217 | hp->h_bcc = addto(hp->h_bcc, &linebuf[2]); | |
218 | hp->h_seq++; | |
219 | break; | |
220 | ||
221 | case 'd': | |
222 | copy(deadletter, &linebuf[2]); | |
223 | /* fall into . . . */ | |
224 | ||
225 | case 'r': | |
226 | /* | |
227 | * Invoke a file: | |
228 | * Search for the file name, | |
229 | * then open it and copy the contents to obuf. | |
230 | */ | |
231 | ||
232 | cp = &linebuf[2]; | |
233 | while (any(*cp, " \t")) | |
234 | cp++; | |
235 | if (*cp == '\0') { | |
236 | printf("Interpolate what file?\n"); | |
237 | break; | |
238 | } | |
239 | cp = expand(cp); | |
240 | if (cp == NOSTR) | |
241 | break; | |
242 | if (isdir(cp)) { | |
243 | printf("%s: directory\n"); | |
244 | break; | |
245 | } | |
246 | if ((fbuf = fopen(cp, "r")) == NULL) { | |
247 | perror(cp); | |
248 | break; | |
249 | } | |
250 | printf("\"%s\" ", cp); | |
251 | flush(); | |
252 | lc = 0; | |
253 | cc = 0; | |
254 | while (readline(fbuf, linebuf) > 0) { | |
255 | lc++; | |
256 | if ((t = putline(obuf, linebuf)) < 0) { | |
257 | fclose(fbuf); | |
258 | goto err; | |
259 | } | |
260 | cc += t; | |
261 | } | |
262 | fclose(fbuf); | |
263 | printf("%d/%d\n", lc, cc); | |
264 | break; | |
265 | ||
266 | case 'w': | |
267 | /* | |
268 | * Write the message on a file. | |
269 | */ | |
270 | ||
271 | cp = &linebuf[2]; | |
272 | while (any(*cp, " \t")) | |
273 | cp++; | |
274 | if (*cp == '\0') { | |
275 | fprintf(stderr, "Write what file!?\n"); | |
276 | break; | |
277 | } | |
278 | if ((cp = expand(cp)) == NOSTR) | |
279 | break; | |
280 | fflush(obuf); | |
281 | rewind(ibuf); | |
282 | exwrite(cp, ibuf, 1); | |
283 | break; | |
284 | ||
285 | case 'm': | |
286 | case 'f': | |
287 | /* | |
288 | * Interpolate the named messages, if we | |
289 | * are in receiving mail mode. Does the | |
290 | * standard list processing garbage. | |
291 | * If ~f is given, we don't shift over. | |
292 | */ | |
293 | ||
294 | if (!rcvmode) { | |
295 | printf("No messages to send from!?!\n"); | |
296 | break; | |
297 | } | |
298 | cp = &linebuf[2]; | |
299 | while (any(*cp, " \t")) | |
300 | cp++; | |
301 | if (forward(cp, obuf, c) < 0) | |
302 | goto err; | |
303 | printf("(continue)\n"); | |
304 | break; | |
305 | ||
306 | case '?': | |
307 | nofault = 0; | |
308 | if ((fbuf = fopen(THELPFILE, "r")) == NULL) { | |
309 | printf("No help just now.\n"); | |
310 | break; | |
311 | } | |
312 | t = getc(fbuf); | |
313 | while (t != -1) { | |
314 | putchar(t); | |
315 | t = getc(fbuf); | |
316 | } | |
317 | fclose(fbuf); | |
318 | break; | |
319 | ||
320 | case 'p': | |
321 | /* | |
322 | * Print out the current state of the | |
323 | * message without altering anything. | |
324 | */ | |
325 | ||
326 | fflush(obuf); | |
327 | rewind(ibuf); | |
328 | nofault = 0; | |
329 | printf("-------\nMessage contains:\n"); | |
330 | puthead(hp, stdout, GTO|GSUBJECT|GCC|GBCC|GNL); | |
331 | t = getc(ibuf); | |
332 | while (t != EOF) { | |
333 | putchar(t); | |
334 | t = getc(ibuf); | |
335 | } | |
336 | printf("(continue)\n"); | |
337 | break; | |
338 | ||
339 | case '^': | |
340 | case '|': | |
341 | /* | |
342 | * Pipe message through command. | |
343 | * Collect output as new message. | |
344 | */ | |
345 | ||
346 | obuf = mespipe(ibuf, obuf, &linebuf[2]); | |
347 | newo = obuf; | |
348 | ibuf = newi; | |
349 | newi = ibuf; | |
350 | printf("(continue)\n"); | |
351 | break; | |
352 | ||
353 | case 'v': | |
354 | case 'e': | |
355 | /* | |
356 | * Edit the current message. | |
357 | * 'e' means to use EDITOR | |
358 | * 'v' means to use VISUAL | |
359 | */ | |
360 | ||
361 | if ((obuf = mesedit(ibuf, obuf, c)) == NULL) | |
362 | goto err; | |
363 | newo = obuf; | |
364 | ibuf = newi; | |
365 | printf("(continue)\n"); | |
366 | break; | |
367 | break; | |
368 | } | |
369 | } | |
370 | eof: | |
371 | fclose(obuf); | |
372 | rewind(ibuf); | |
373 | signal(SIGINT, savesig); | |
374 | noreset = 0; | |
375 | return(ibuf); | |
376 | ||
377 | err: | |
378 | if (ibuf != NULL) | |
379 | fclose(ibuf); | |
380 | if (obuf != NULL) | |
381 | fclose(obuf); | |
382 | signal(SIGINT, savesig); | |
383 | noreset = 0; | |
384 | return(NULL); | |
385 | } | |
386 | ||
387 | /* | |
388 | * Non destructively interrogate the value of the given signal. | |
389 | */ | |
390 | ||
391 | psig(n) | |
392 | { | |
393 | register (*wassig)(); | |
394 | ||
395 | wassig = signal(n, SIG_IGN); | |
396 | signal(n, wassig); | |
397 | return((int) wassig); | |
398 | } | |
399 | ||
400 | /* | |
401 | * Write a file, ex-like if f set. | |
402 | */ | |
403 | ||
404 | exwrite(name, ibuf, f) | |
405 | char name[]; | |
406 | FILE *ibuf; | |
407 | { | |
408 | register FILE *of; | |
409 | register int c; | |
410 | long cc; | |
411 | int lc; | |
412 | struct stat junk; | |
413 | ||
414 | if (f) { | |
415 | printf("\"%s\" ", name); | |
416 | fflush(stdout); | |
417 | } | |
418 | if (stat(name, &junk) >= 0) { | |
419 | if (!f) | |
420 | fprintf(stderr, "%s: ", name); | |
421 | fprintf(stderr, "File exists\n", name); | |
422 | return(-1); | |
423 | } | |
424 | if ((of = fopen(name, "w")) == NULL) { | |
425 | perror(NOSTR); | |
426 | return(-1); | |
427 | } | |
428 | lc = 0; | |
429 | cc = 0; | |
430 | while ((c = getc(ibuf)) != EOF) { | |
431 | cc++; | |
432 | if (c == '\n') | |
433 | lc++; | |
434 | putc(c, of); | |
435 | if (ferror(of)) { | |
436 | perror(name); | |
437 | fclose(of); | |
438 | return(-1); | |
439 | } | |
440 | } | |
441 | fclose(of); | |
442 | printf("%d/%ld\n", lc, cc); | |
443 | fflush(stdout); | |
444 | return(0); | |
445 | } | |
446 | ||
447 | /* | |
448 | * Edit the message being collected on ibuf and obuf. | |
449 | * Write the message out onto some poorly-named temp file | |
450 | * and point an editor at it. | |
451 | * | |
452 | * On return, make the edit file the new temp file. | |
453 | */ | |
454 | ||
455 | FILE * | |
456 | mesedit(ibuf, obuf, c) | |
457 | FILE *ibuf, *obuf; | |
458 | { | |
459 | int pid, s; | |
460 | FILE *fbuf; | |
461 | register int t; | |
462 | int (*sig)(); | |
463 | struct stat sbuf; | |
464 | extern char tempMail[], tempEdit[]; | |
465 | register char *edit; | |
466 | ||
467 | sig = signal(SIGINT, SIG_IGN); | |
468 | if (stat(tempEdit, &sbuf) >= 0) { | |
469 | printf("%s: file exists\n", tempEdit); | |
470 | goto out; | |
471 | } | |
472 | close(creat(tempEdit, 0600)); | |
473 | if ((fbuf = fopen(tempEdit, "w")) == NULL) { | |
474 | perror(tempEdit); | |
475 | goto out; | |
476 | } | |
477 | fflush(obuf); | |
478 | rewind(ibuf); | |
479 | t = getc(ibuf); | |
480 | while (t != EOF) { | |
481 | putc(t, fbuf); | |
482 | t = getc(ibuf); | |
483 | } | |
484 | fflush(fbuf); | |
485 | if (ferror(fbuf)) { | |
486 | perror(tempEdit); | |
487 | remove(tempEdit); | |
488 | goto fix; | |
489 | } | |
490 | fclose(fbuf); | |
491 | if ((edit = value(c == 'e' ? "EDITOR" : "VISUAL")) == NOSTR) | |
492 | edit = c == 'e' ? EDITOR : VISUAL; | |
493 | pid = vfork(); | |
494 | if (pid == 0) { | |
495 | if (sig != SIG_IGN) | |
496 | signal(SIGINT, SIG_DFL); | |
497 | execl(edit, edit, tempEdit, 0); | |
498 | perror(edit); | |
499 | _exit(1); | |
500 | } | |
501 | if (pid == -1) { | |
502 | perror("fork"); | |
503 | remove(tempEdit); | |
504 | goto out; | |
505 | } | |
506 | while (wait(&s) != pid) | |
507 | ; | |
508 | if (s != 0) { | |
509 | printf("Fatal error in \"%s\"\n", edit); | |
510 | remove(tempEdit); | |
511 | goto out; | |
512 | } | |
513 | ||
514 | /* | |
515 | * Now switch to new file. | |
516 | */ | |
517 | ||
518 | if ((fbuf = fopen(tempEdit, "a")) == NULL) { | |
519 | perror(tempEdit); | |
520 | remove(tempEdit); | |
521 | goto out; | |
522 | } | |
523 | if ((ibuf = fopen(tempEdit, "r")) == NULL) { | |
524 | perror(tempEdit); | |
525 | fclose(fbuf); | |
526 | remove(tempEdit); | |
527 | goto out; | |
528 | } | |
529 | remove(tempEdit); | |
530 | fclose(obuf); | |
531 | fclose(newi); | |
532 | obuf = fbuf; | |
533 | goto out; | |
534 | fix: | |
535 | perror(tempEdit); | |
536 | out: | |
537 | signal(SIGINT, sig); | |
538 | newi = ibuf; | |
539 | return(obuf); | |
540 | } | |
541 | ||
542 | /* | |
543 | * Pipe the message through the command. | |
544 | * Old message is on stdin of command; | |
545 | * New message collected from stdout. | |
546 | * Sh -c must return 0 to accept the new message. | |
547 | */ | |
548 | ||
549 | FILE * | |
550 | mespipe(ibuf, obuf, cmd) | |
551 | FILE *ibuf, *obuf; | |
552 | char cmd[]; | |
553 | { | |
554 | register FILE *ni, *no; | |
555 | int pid, s; | |
556 | int (*savesig)(); | |
557 | char *Shell; | |
558 | ||
559 | newi = ibuf; | |
560 | if ((no = fopen(tempEdit, "w")) == NULL) { | |
561 | perror(tempEdit); | |
562 | return(obuf); | |
563 | } | |
564 | if ((ni = fopen(tempEdit, "r")) == NULL) { | |
565 | perror(tempEdit); | |
566 | fclose(no); | |
567 | remove(tempEdit); | |
568 | return(obuf); | |
569 | } | |
570 | remove(tempEdit); | |
571 | savesig = signal(SIGINT, SIG_IGN); | |
572 | fflush(obuf); | |
573 | rewind(ibuf); | |
574 | if ((Shell = value("SHELL")) == NULL) | |
575 | Shell = "/bin/sh"; | |
576 | if ((pid = vfork()) == -1) { | |
577 | perror("fork"); | |
578 | goto err; | |
579 | } | |
580 | if (pid == 0) { | |
581 | /* | |
582 | * stdin = current message. | |
583 | * stdout = new message. | |
584 | */ | |
585 | ||
586 | close(0); | |
587 | dup(fileno(ibuf)); | |
588 | close(1); | |
589 | dup(fileno(no)); | |
590 | for (s = 4; s < 15; s++) | |
591 | close(s); | |
592 | execl(Shell, Shell, "-c", cmd, 0); | |
593 | perror(Shell); | |
594 | _exit(1); | |
595 | } | |
596 | while (wait(&s) != pid) | |
597 | ; | |
598 | if (s != 0 || pid == -1) { | |
599 | fprintf(stderr, "\"%s\" failed!?\n", cmd); | |
600 | goto err; | |
601 | } | |
602 | if (fsize(ni) == 0) { | |
603 | fprintf(stderr, "No bytes from \"%s\" !?\n", cmd); | |
604 | goto err; | |
605 | } | |
606 | ||
607 | /* | |
608 | * Take new files. | |
609 | */ | |
610 | ||
611 | newi = ni; | |
612 | fclose(ibuf); | |
613 | fclose(obuf); | |
614 | signal(SIGINT, savesig); | |
615 | return(no); | |
616 | ||
617 | err: | |
618 | fclose(no); | |
619 | fclose(ni); | |
620 | signal(SIGINT, savesig); | |
621 | return(obuf); | |
622 | } | |
623 | ||
624 | /* | |
625 | * Interpolate the named messages into the current | |
626 | * message, preceding each line with a tab. | |
627 | * Return a count of the number of characters now in | |
628 | * the message, or -1 if an error is encountered writing | |
629 | * the message temporary. The flag argument is 'm' if we | |
630 | * should shift over and 'f' if not. | |
631 | */ | |
632 | ||
633 | forward(ms, obuf, f) | |
634 | char ms[]; | |
635 | FILE *obuf; | |
636 | { | |
637 | register int *msgvec, *ip; | |
638 | extern char tempMail[]; | |
639 | ||
640 | msgvec = (int *) salloc((msgCount+1) * sizeof *msgvec); | |
641 | if (msgvec == (int *) NOSTR) | |
642 | return(0); | |
643 | if (getmsglist(ms, msgvec, 0) < 0) | |
644 | return(0); | |
645 | if (*msgvec == NULL) { | |
646 | *msgvec = first(0, MMNORM); | |
647 | if (*msgvec == NULL) { | |
648 | printf("No appropriate messages\n"); | |
649 | return(0); | |
650 | } | |
651 | msgvec[1] = NULL; | |
652 | } | |
653 | printf("Interpolating:"); | |
654 | for (ip = msgvec; *ip != NULL; ip++) { | |
655 | touch(*ip); | |
656 | printf(" %d", *ip); | |
657 | if (f == 'm') { | |
658 | if (transmit(&message[*ip-1], obuf) < 0) { | |
659 | perror(tempMail); | |
660 | return(-1); | |
661 | } | |
662 | } else | |
663 | if (send(&message[*ip-1], obuf) < 0) { | |
664 | perror(tempMail); | |
665 | return(-1); | |
666 | } | |
667 | } | |
668 | printf("\n"); | |
669 | return(0); | |
670 | } | |
671 | ||
672 | /* | |
673 | * Send message described by the passed pointer to the | |
674 | * passed output buffer. Insert a tab in front of each | |
675 | * line. Return a count of the characters sent, or -1 | |
676 | * on error. | |
677 | */ | |
678 | ||
679 | transmit(mailp, obuf) | |
680 | struct message *mailp; | |
681 | FILE *obuf; | |
682 | { | |
683 | register struct message *mp; | |
684 | register int c, ch; | |
685 | int n, bol; | |
686 | FILE *ibuf; | |
687 | ||
688 | mp = mailp; | |
689 | ibuf = setinput(mp); | |
690 | c = msize(mp); | |
691 | n = c; | |
692 | bol = 1; | |
693 | while (c-- > 0) { | |
694 | if (bol) { | |
695 | bol = 0; | |
696 | putc('\t', obuf); | |
697 | n++; | |
698 | if (ferror(obuf)) { | |
699 | perror("/tmp"); | |
700 | return(-1); | |
701 | } | |
702 | } | |
703 | ch = getc(ibuf); | |
704 | if (ch == '\n') | |
705 | bol++; | |
706 | putc(ch, obuf); | |
707 | if (ferror(obuf)) { | |
708 | perror("/tmp"); | |
709 | return(-1); | |
710 | } | |
711 | } | |
712 | return(n); | |
713 | } | |
714 | ||
715 | /* | |
716 | * On interrupt, go here to save the partial | |
717 | * message on #/dead.letter. | |
718 | * Then restore signals and execute the normal | |
719 | * signal routine. We only come here if signals | |
720 | * were previously set anyway. | |
721 | */ | |
722 | ||
723 | collrub(s) | |
724 | { | |
725 | register FILE *dbuf; | |
726 | register int c; | |
727 | ||
728 | #ifdef V7 | |
729 | signal(s, SIG_IGN); | |
730 | #else | |
731 | signal(SIGINT, SIG_IGN); | |
732 | #endif | |
733 | if (nofault) { | |
734 | #ifdef V7 | |
735 | signal(s, collrub); | |
736 | #else | |
737 | signal(SIGINT, collrub); | |
738 | #endif | |
739 | return; | |
740 | } | |
741 | if (hadintr == 0) { | |
742 | hadintr++; | |
743 | clrbuf(stdout); | |
744 | printf("\n(Interrupt -- one more to kill letter)\n"); | |
745 | #ifdef V7 | |
746 | signal(s, collrub); | |
747 | #else | |
748 | signal(SIGINT, collrub); | |
749 | #endif | |
750 | longjmp(coljmp, 1); | |
751 | } | |
752 | fclose(newo); | |
753 | rewind(newi); | |
754 | if (value("nosave") != NOSTR || fsize(newi) == 0) | |
755 | goto done; | |
756 | if ((dbuf = fopen(deadletter, "w")) == NULL) | |
757 | goto done; | |
758 | chmod(deadletter, 0600); | |
759 | while ((c = getc(newi)) != EOF) | |
760 | putc(c, dbuf); | |
761 | fclose(dbuf); | |
762 | ||
763 | done: | |
764 | fclose(newi); | |
765 | signal(SIGINT, savesig); | |
766 | if (rcvmode) | |
767 | stop(); | |
768 | else | |
769 | exit(1); | |
770 | } | |
771 | ||
772 | /* | |
773 | * Acknowledge an interrupt signal from the tty by typing an @ | |
774 | */ | |
775 | ||
776 | intack(s) | |
777 | { | |
778 | ||
779 | signal(SIGINT, SIG_IGN); | |
780 | puts("@"); | |
781 | fflush(stdout); | |
782 | clearerr(stdin); | |
783 | signal(SIGINT, intack); | |
784 | } | |
785 | ||
786 | /* | |
787 | * Add a string to the end of a header entry field. | |
788 | */ | |
789 | ||
790 | char * | |
791 | addto(hf, news) | |
792 | char hf[], news[]; | |
793 | { | |
794 | register char *cp, *cp2, *linebuf; | |
795 | ||
796 | if (hf == NOSTR) | |
797 | hf = ""; | |
798 | if (*news == '\0') | |
799 | return(hf); | |
800 | linebuf = salloc(strlen(hf) + strlen(news) + 2); | |
801 | for (cp = hf; any(*cp, " \t"); cp++) | |
802 | ; | |
803 | for (cp2 = linebuf; *cp;) | |
804 | *cp2++ = *cp++; | |
805 | *cp2++ = ' '; | |
806 | for (cp = news; any(*cp, " \t"); cp++) | |
807 | ; | |
808 | while (*cp != '\0') | |
809 | *cp2++ = *cp++; | |
810 | *cp2 = '\0'; | |
811 | return(linebuf); | |
812 | } |