Commit | Line | Data |
---|---|---|
9552e6b8 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
2ae9f53f | 7 | #ifndef lint |
ac676849 | 8 | static char *sccsid = "@(#)fio.c 5.4 (Berkeley) %G%"; |
9552e6b8 | 9 | #endif not lint |
77a2ce8a KS |
10 | |
11 | #include "rcv.h" | |
12 | #include <sys/stat.h> | |
13 | #include <errno.h> | |
ac676849 | 14 | #include <strings.h> |
77a2ce8a KS |
15 | |
16 | /* | |
17 | * Mail -- a mail program | |
18 | * | |
19 | * File I/O. | |
20 | */ | |
21 | ||
77a2ce8a KS |
22 | /* |
23 | * Set up the input pointers while copying the mail file into | |
24 | * /tmp. | |
25 | */ | |
26 | ||
27 | setptr(ibuf) | |
28 | FILE *ibuf; | |
29 | { | |
9008b544 | 30 | register int c; |
9b888765 | 31 | register char *cp, *cp2; |
0154300b CS |
32 | register int count, l; |
33 | long s; | |
77a2ce8a KS |
34 | off_t offset; |
35 | char linebuf[LINESIZE]; | |
9b888765 KS |
36 | char wbuf[LINESIZE]; |
37 | int maybe, mestmp, flag, inhead; | |
77a2ce8a KS |
38 | struct message this; |
39 | extern char tempSet[]; | |
40 | ||
41 | if ((mestmp = opentemp(tempSet)) < 0) | |
42 | exit(1); | |
43 | msgCount = 0; | |
44 | offset = 0; | |
0154300b | 45 | s = 0L; |
77a2ce8a KS |
46 | l = 0; |
47 | maybe = 1; | |
9b888765 | 48 | flag = MUSED|MNEW; |
77a2ce8a | 49 | for (;;) { |
87d10954 | 50 | if (fgets(linebuf, LINESIZE, ibuf) == NULL) { |
77a2ce8a | 51 | this.m_flag = flag; |
9b888765 | 52 | flag = MUSED|MNEW; |
77a2ce8a KS |
53 | this.m_offset = offsetof(offset); |
54 | this.m_block = blockof(offset); | |
55 | this.m_size = s; | |
56 | this.m_lines = l; | |
57 | if (append(&this, mestmp)) { | |
58 | perror(tempSet); | |
59 | exit(1); | |
60 | } | |
61 | fclose(ibuf); | |
62 | makemessage(mestmp); | |
63 | close(mestmp); | |
64 | return; | |
65 | } | |
87d10954 DS |
66 | count = strlen(linebuf); |
67 | fputs(linebuf, otf); | |
68 | cp = linebuf + (count - 1); | |
69 | if (*cp == '\n') | |
70 | *cp = 0; | |
9008b544 | 71 | if (ferror(otf)) { |
77a2ce8a KS |
72 | perror("/tmp"); |
73 | exit(1); | |
74 | } | |
9b888765 | 75 | if (maybe && linebuf[0] == 'F' && ishead(linebuf)) { |
77a2ce8a KS |
76 | msgCount++; |
77 | this.m_flag = flag; | |
9b888765 | 78 | flag = MUSED|MNEW; |
29c01f3c | 79 | inhead = 1; |
77a2ce8a KS |
80 | this.m_block = blockof(offset); |
81 | this.m_offset = offsetof(offset); | |
82 | this.m_size = s; | |
83 | this.m_lines = l; | |
0154300b | 84 | s = 0L; |
77a2ce8a KS |
85 | l = 0; |
86 | if (append(&this, mestmp)) { | |
87 | perror(tempSet); | |
88 | exit(1); | |
89 | } | |
90 | } | |
9b888765 KS |
91 | if (linebuf[0] == 0) |
92 | inhead = 0; | |
87d10954 DS |
93 | if (inhead && (cp = index(linebuf, ':'))) { |
94 | *cp = 0; | |
95 | if (icequal(linebuf, "status")) { | |
96 | ++cp; | |
9b888765 KS |
97 | if (index(cp, 'R')) |
98 | flag |= MREAD; | |
99 | if (index(cp, 'O')) | |
100 | flag &= ~MNEW; | |
101 | inhead = 0; | |
102 | } | |
103 | } | |
77a2ce8a | 104 | offset += count; |
0154300b | 105 | s += (long) count; |
77a2ce8a KS |
106 | l++; |
107 | maybe = 0; | |
108 | if (linebuf[0] == 0) | |
109 | maybe = 1; | |
110 | } | |
111 | } | |
112 | ||
113 | /* | |
114 | * Drop the passed line onto the passed output buffer. | |
115 | * If a write error occurs, return -1, else the count of | |
116 | * characters written, including the newline. | |
117 | */ | |
118 | ||
119 | putline(obuf, linebuf) | |
120 | FILE *obuf; | |
121 | char *linebuf; | |
122 | { | |
123 | register int c; | |
124 | ||
125 | c = strlen(linebuf); | |
126 | fputs(linebuf, obuf); | |
127 | putc('\n', obuf); | |
128 | if (ferror(obuf)) | |
129 | return(-1); | |
130 | return(c+1); | |
131 | } | |
132 | ||
133 | /* | |
134 | * Read up a line from the specified input into the line | |
135 | * buffer. Return the number of characters read. Do not | |
136 | * include the newline at the end. | |
137 | */ | |
138 | ||
139 | readline(ibuf, linebuf) | |
140 | FILE *ibuf; | |
141 | char *linebuf; | |
142 | { | |
87d10954 | 143 | register int n; |
77a2ce8a | 144 | |
87d10954 DS |
145 | clearerr(ibuf); |
146 | if (fgets(linebuf, LINESIZE, ibuf) == NULL) | |
77a2ce8a | 147 | return(0); |
87d10954 DS |
148 | n = strlen(linebuf); |
149 | if (n >= 1 && linebuf[n-1] == '\n') | |
150 | linebuf[n-1] = '\0'; | |
151 | return(n); | |
77a2ce8a KS |
152 | } |
153 | ||
154 | /* | |
155 | * Return a file buffer all ready to read up the | |
156 | * passed message pointer. | |
157 | */ | |
158 | ||
159 | FILE * | |
160 | setinput(mp) | |
161 | register struct message *mp; | |
162 | { | |
163 | off_t off; | |
164 | ||
165 | fflush(otf); | |
166 | off = mp->m_block; | |
167 | off <<= 9; | |
168 | off += mp->m_offset; | |
169 | if (fseek(itf, off, 0) < 0) { | |
170 | perror("fseek"); | |
171 | panic("temporary file seek"); | |
172 | } | |
173 | return(itf); | |
174 | } | |
175 | ||
176 | /* | |
177 | * Take the data out of the passed ghost file and toss it into | |
178 | * a dynamically allocated message structure. | |
179 | */ | |
180 | ||
181 | makemessage(f) | |
182 | { | |
183 | register struct message *m; | |
184 | register char *mp; | |
185 | register count; | |
186 | ||
187 | mp = calloc((unsigned) (msgCount + 1), sizeof *m); | |
188 | if (mp == NOSTR) { | |
189 | printf("Insufficient memory for %d messages\n", msgCount); | |
190 | exit(1); | |
191 | } | |
838681f8 KS |
192 | if (message != (struct message *) 0) |
193 | cfree((char *) message); | |
77a2ce8a KS |
194 | message = (struct message *) mp; |
195 | dot = message; | |
196 | lseek(f, 0L, 0); | |
197 | while (count = read(f, mp, BUFSIZ)) | |
198 | mp += count; | |
199 | for (m = &message[0]; m < &message[msgCount]; m++) { | |
200 | m->m_size = (m+1)->m_size; | |
201 | m->m_lines = (m+1)->m_lines; | |
9b888765 | 202 | m->m_flag = (m+1)->m_flag; |
77a2ce8a | 203 | } |
0154300b | 204 | message[msgCount].m_size = 0L; |
77a2ce8a KS |
205 | message[msgCount].m_lines = 0; |
206 | } | |
207 | ||
208 | /* | |
209 | * Append the passed message descriptor onto the temp file. | |
210 | * If the write fails, return 1, else 0 | |
211 | */ | |
212 | ||
213 | append(mp, f) | |
214 | struct message *mp; | |
215 | { | |
216 | if (write(f, (char *) mp, sizeof *mp) != sizeof *mp) | |
217 | return(1); | |
218 | return(0); | |
219 | } | |
220 | ||
221 | /* | |
222 | * Delete a file, but only if the file is a plain file. | |
223 | */ | |
224 | ||
225 | remove(name) | |
226 | char name[]; | |
227 | { | |
228 | struct stat statb; | |
229 | extern int errno; | |
230 | ||
231 | if (stat(name, &statb) < 0) | |
232 | return(-1); | |
233 | if ((statb.st_mode & S_IFMT) != S_IFREG) { | |
234 | errno = EISDIR; | |
235 | return(-1); | |
236 | } | |
237 | return(unlink(name)); | |
238 | } | |
239 | ||
240 | /* | |
241 | * Terminate an editing session by attempting to write out the user's | |
5ab0568d | 242 | * file from the temporary. Save any new stuff appended to the file. |
77a2ce8a | 243 | */ |
77a2ce8a KS |
244 | edstop() |
245 | { | |
246 | register int gotcha, c; | |
247 | register struct message *mp; | |
8b5a06af | 248 | FILE *obuf, *ibuf, *readstat; |
5ab0568d | 249 | struct stat statb; |
8b5a06af | 250 | char tempname[30], *id; |
b3d49ad3 | 251 | int (*sigs[3])(); |
77a2ce8a | 252 | |
838681f8 KS |
253 | if (readonly) |
254 | return; | |
985c722d | 255 | holdsigs(); |
8b5a06af KS |
256 | if (Tflag != NOSTR) { |
257 | if ((readstat = fopen(Tflag, "w")) == NULL) | |
258 | Tflag = NOSTR; | |
259 | } | |
953c713a KS |
260 | for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) { |
261 | if (mp->m_flag & MNEW) { | |
262 | mp->m_flag &= ~MNEW; | |
263 | mp->m_flag |= MSTATUS; | |
264 | } | |
8b5a06af | 265 | if (mp->m_flag & (MODIFY|MDELETED|MSTATUS)) |
77a2ce8a | 266 | gotcha++; |
8b5a06af KS |
267 | if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) { |
268 | if ((id = hfield("article-id", mp)) != NOSTR) | |
269 | fprintf(readstat, "%s\n", id); | |
77a2ce8a | 270 | } |
953c713a | 271 | } |
8b5a06af KS |
272 | if (Tflag != NOSTR) |
273 | fclose(readstat); | |
d85bd93d | 274 | if (!gotcha || Tflag != NOSTR) |
b3d49ad3 | 275 | goto done; |
5ab0568d KS |
276 | ibuf = NULL; |
277 | if (stat(editfile, &statb) >= 0 && statb.st_size > mailsize) { | |
278 | strcpy(tempname, "/tmp/mboxXXXXXX"); | |
279 | mktemp(tempname); | |
280 | if ((obuf = fopen(tempname, "w")) == NULL) { | |
281 | perror(tempname); | |
985c722d | 282 | relsesigs(); |
5ab0568d KS |
283 | reset(0); |
284 | } | |
285 | if ((ibuf = fopen(editfile, "r")) == NULL) { | |
286 | perror(editfile); | |
287 | fclose(obuf); | |
288 | remove(tempname); | |
985c722d | 289 | relsesigs(); |
5ab0568d KS |
290 | reset(0); |
291 | } | |
0c3a2f40 | 292 | fseek(ibuf, mailsize, 0); |
5ab0568d KS |
293 | while ((c = getc(ibuf)) != EOF) |
294 | putc(c, obuf); | |
295 | fclose(ibuf); | |
296 | fclose(obuf); | |
297 | if ((ibuf = fopen(tempname, "r")) == NULL) { | |
298 | perror(tempname); | |
299 | remove(tempname); | |
985c722d | 300 | relsesigs(); |
5ab0568d KS |
301 | reset(0); |
302 | } | |
303 | remove(tempname); | |
304 | } | |
77a2ce8a | 305 | printf("\"%s\" ", editfile); |
80187484 | 306 | fflush(stdout); |
b17445e6 | 307 | if ((obuf = fopen(editfile, "r+")) == NULL) { |
77a2ce8a | 308 | perror(editfile); |
985c722d | 309 | relsesigs(); |
77a2ce8a KS |
310 | reset(0); |
311 | } | |
b17445e6 | 312 | trunc(obuf); |
77a2ce8a KS |
313 | c = 0; |
314 | for (mp = &message[0]; mp < &message[msgCount]; mp++) { | |
315 | if ((mp->m_flag & MDELETED) != 0) | |
316 | continue; | |
317 | c++; | |
c718ab56 | 318 | if (send(mp, obuf, 0) < 0) { |
77a2ce8a | 319 | perror(editfile); |
985c722d | 320 | relsesigs(); |
77a2ce8a KS |
321 | reset(0); |
322 | } | |
323 | } | |
5ab0568d KS |
324 | gotcha = (c == 0 && ibuf == NULL); |
325 | if (ibuf != NULL) { | |
326 | while ((c = getc(ibuf)) != EOF) | |
327 | putc(c, obuf); | |
328 | fclose(ibuf); | |
329 | } | |
77a2ce8a KS |
330 | fflush(obuf); |
331 | if (ferror(obuf)) { | |
332 | perror(editfile); | |
985c722d | 333 | relsesigs(); |
77a2ce8a KS |
334 | reset(0); |
335 | } | |
5ab0568d KS |
336 | fclose(obuf); |
337 | if (gotcha) { | |
77a2ce8a KS |
338 | remove(editfile); |
339 | printf("removed\n"); | |
340 | } | |
341 | else | |
342 | printf("complete\n"); | |
80187484 | 343 | fflush(stdout); |
b3d49ad3 KS |
344 | |
345 | done: | |
985c722d | 346 | relsesigs(); |
b3d49ad3 KS |
347 | } |
348 | ||
f5df67b9 | 349 | static int sigdepth = 0; /* depth of holdsigs() */ |
56d6aa4a | 350 | static int omask = 0; |
b3d49ad3 | 351 | /* |
985c722d | 352 | * Hold signals SIGHUP - SIGQUIT. |
b3d49ad3 | 353 | */ |
985c722d | 354 | holdsigs() |
b3d49ad3 KS |
355 | { |
356 | register int i; | |
357 | ||
f5df67b9 | 358 | if (sigdepth++ == 0) |
56d6aa4a | 359 | omask = sigblock(sigmask(SIGHUP)|sigmask(SIGINT)|sigmask(SIGQUIT)); |
b3d49ad3 KS |
360 | } |
361 | ||
362 | /* | |
985c722d | 363 | * Release signals SIGHUP - SIGQUIT |
b3d49ad3 | 364 | */ |
985c722d | 365 | relsesigs() |
b3d49ad3 KS |
366 | { |
367 | register int i; | |
985c722d | 368 | |
f5df67b9 | 369 | if (--sigdepth == 0) |
56d6aa4a | 370 | sigsetmask(omask); |
77a2ce8a KS |
371 | } |
372 | ||
77a2ce8a KS |
373 | /* |
374 | * Open a temp file by creating, closing, unlinking, and | |
375 | * reopening. Return the open file descriptor. | |
376 | */ | |
377 | ||
378 | opentemp(file) | |
379 | char file[]; | |
380 | { | |
381 | register int f; | |
382 | ||
383 | if ((f = creat(file, 0600)) < 0) { | |
384 | perror(file); | |
385 | return(-1); | |
386 | } | |
387 | close(f); | |
388 | if ((f = open(file, 2)) < 0) { | |
389 | perror(file); | |
390 | remove(file); | |
391 | return(-1); | |
392 | } | |
393 | remove(file); | |
394 | return(f); | |
395 | } | |
396 | ||
77a2ce8a KS |
397 | /* |
398 | * Determine the size of the file possessed by | |
399 | * the passed buffer. | |
400 | */ | |
401 | ||
402 | off_t | |
403 | fsize(iob) | |
404 | FILE *iob; | |
405 | { | |
406 | register int f; | |
407 | struct stat sbuf; | |
408 | ||
409 | f = fileno(iob); | |
410 | if (fstat(f, &sbuf) < 0) | |
411 | return(0); | |
412 | return(sbuf.st_size); | |
413 | } | |
414 | ||
415 | /* | |
416 | * Take a file name, possibly with shell meta characters | |
417 | * in it and expand it by using "sh -c echo filename" | |
418 | * Return the file name as a dynamic string. | |
419 | */ | |
420 | ||
421 | char * | |
422 | expand(name) | |
423 | char name[]; | |
424 | { | |
425 | char xname[BUFSIZ]; | |
426 | char cmdbuf[BUFSIZ]; | |
427 | register int pid, l, rc; | |
428 | register char *cp, *Shell; | |
429 | int s, pivec[2], (*sigint)(); | |
430 | struct stat sbuf; | |
431 | ||
df3c4fbd KS |
432 | if (name[0] == '+' && getfold(cmdbuf) >= 0) { |
433 | sprintf(xname, "%s/%s", cmdbuf, name + 1); | |
38a42545 KS |
434 | return(expand(savestr(xname))); |
435 | } | |
77a2ce8a KS |
436 | if (!anyof(name, "~{[*?$`'\"\\")) |
437 | return(name); | |
77a2ce8a KS |
438 | if (pipe(pivec) < 0) { |
439 | perror("pipe"); | |
77a2ce8a KS |
440 | return(name); |
441 | } | |
442 | sprintf(cmdbuf, "echo %s", name); | |
443 | if ((pid = vfork()) == 0) { | |
9ff57b47 | 444 | sigchild(); |
77a2ce8a KS |
445 | Shell = value("SHELL"); |
446 | if (Shell == NOSTR) | |
447 | Shell = SHELL; | |
448 | close(pivec[0]); | |
449 | close(1); | |
450 | dup(pivec[1]); | |
451 | close(pivec[1]); | |
452 | close(2); | |
453 | execl(Shell, Shell, "-c", cmdbuf, 0); | |
454 | _exit(1); | |
455 | } | |
456 | if (pid == -1) { | |
457 | perror("fork"); | |
458 | close(pivec[0]); | |
459 | close(pivec[1]); | |
460 | return(NOSTR); | |
461 | } | |
462 | close(pivec[1]); | |
463 | l = read(pivec[0], xname, BUFSIZ); | |
464 | close(pivec[0]); | |
465 | while (wait(&s) != pid); | |
466 | ; | |
467 | s &= 0377; | |
468 | if (s != 0 && s != SIGPIPE) { | |
469 | fprintf(stderr, "\"Echo\" failed\n"); | |
470 | goto err; | |
471 | } | |
472 | if (l < 0) { | |
473 | perror("read"); | |
474 | goto err; | |
475 | } | |
476 | if (l == 0) { | |
477 | fprintf(stderr, "\"%s\": No match\n", name); | |
478 | goto err; | |
479 | } | |
480 | if (l == BUFSIZ) { | |
481 | fprintf(stderr, "Buffer overflow expanding \"%s\"\n", name); | |
482 | goto err; | |
483 | } | |
484 | xname[l] = 0; | |
485 | for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--) | |
486 | ; | |
487 | *++cp = '\0'; | |
488 | if (any(' ', xname) && stat(xname, &sbuf) < 0) { | |
489 | fprintf(stderr, "\"%s\": Ambiguous\n", name); | |
490 | goto err; | |
491 | } | |
77a2ce8a KS |
492 | return(savestr(xname)); |
493 | ||
494 | err: | |
77a2ce8a KS |
495 | return(NOSTR); |
496 | } | |
497 | ||
df3c4fbd KS |
498 | /* |
499 | * Determine the current folder directory name. | |
500 | */ | |
501 | getfold(name) | |
502 | char *name; | |
503 | { | |
504 | char *folder; | |
505 | ||
506 | if ((folder = value("folder")) == NOSTR) | |
507 | return(-1); | |
508 | if (*folder == '/') | |
509 | strcpy(name, folder); | |
510 | else | |
511 | sprintf(name, "%s/%s", homedir, folder); | |
512 | return(0); | |
513 | } | |
514 | ||
77a2ce8a KS |
515 | /* |
516 | * A nicer version of Fdopen, which allows us to fclose | |
517 | * without losing the open file. | |
518 | */ | |
519 | ||
520 | FILE * | |
521 | Fdopen(fildes, mode) | |
522 | char *mode; | |
523 | { | |
524 | register int f; | |
525 | FILE *fdopen(); | |
526 | ||
527 | f = dup(fildes); | |
528 | if (f < 0) { | |
529 | perror("dup"); | |
530 | return(NULL); | |
531 | } | |
532 | return(fdopen(f, mode)); | |
533 | } |