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 |
87d10954 | 8 | static char *sccsid = "@(#)fio.c 5.3 (Berkeley) %G%"; |
9552e6b8 | 9 | #endif not lint |
77a2ce8a KS |
10 | |
11 | #include "rcv.h" | |
12 | #include <sys/stat.h> | |
13 | #include <errno.h> | |
14 | ||
15 | /* | |
16 | * Mail -- a mail program | |
17 | * | |
18 | * File I/O. | |
19 | */ | |
20 | ||
77a2ce8a KS |
21 | /* |
22 | * Set up the input pointers while copying the mail file into | |
23 | * /tmp. | |
24 | */ | |
25 | ||
26 | setptr(ibuf) | |
27 | FILE *ibuf; | |
28 | { | |
9008b544 | 29 | register int c; |
9b888765 | 30 | register char *cp, *cp2; |
0154300b CS |
31 | register int count, l; |
32 | long s; | |
77a2ce8a KS |
33 | off_t offset; |
34 | char linebuf[LINESIZE]; | |
9b888765 KS |
35 | char wbuf[LINESIZE]; |
36 | int maybe, mestmp, flag, inhead; | |
77a2ce8a KS |
37 | struct message this; |
38 | extern char tempSet[]; | |
39 | ||
40 | if ((mestmp = opentemp(tempSet)) < 0) | |
41 | exit(1); | |
42 | msgCount = 0; | |
43 | offset = 0; | |
0154300b | 44 | s = 0L; |
77a2ce8a KS |
45 | l = 0; |
46 | maybe = 1; | |
9b888765 | 47 | flag = MUSED|MNEW; |
77a2ce8a | 48 | for (;;) { |
87d10954 | 49 | if (fgets(linebuf, LINESIZE, ibuf) == NULL) { |
77a2ce8a | 50 | this.m_flag = flag; |
9b888765 | 51 | flag = MUSED|MNEW; |
77a2ce8a KS |
52 | this.m_offset = offsetof(offset); |
53 | this.m_block = blockof(offset); | |
54 | this.m_size = s; | |
55 | this.m_lines = l; | |
56 | if (append(&this, mestmp)) { | |
57 | perror(tempSet); | |
58 | exit(1); | |
59 | } | |
60 | fclose(ibuf); | |
61 | makemessage(mestmp); | |
62 | close(mestmp); | |
63 | return; | |
64 | } | |
87d10954 DS |
65 | count = strlen(linebuf); |
66 | fputs(linebuf, otf); | |
67 | cp = linebuf + (count - 1); | |
68 | if (*cp == '\n') | |
69 | *cp = 0; | |
9008b544 | 70 | if (ferror(otf)) { |
77a2ce8a KS |
71 | perror("/tmp"); |
72 | exit(1); | |
73 | } | |
9b888765 | 74 | if (maybe && linebuf[0] == 'F' && ishead(linebuf)) { |
77a2ce8a KS |
75 | msgCount++; |
76 | this.m_flag = flag; | |
9b888765 | 77 | flag = MUSED|MNEW; |
29c01f3c | 78 | inhead = 1; |
77a2ce8a KS |
79 | this.m_block = blockof(offset); |
80 | this.m_offset = offsetof(offset); | |
81 | this.m_size = s; | |
82 | this.m_lines = l; | |
0154300b | 83 | s = 0L; |
77a2ce8a KS |
84 | l = 0; |
85 | if (append(&this, mestmp)) { | |
86 | perror(tempSet); | |
87 | exit(1); | |
88 | } | |
89 | } | |
9b888765 KS |
90 | if (linebuf[0] == 0) |
91 | inhead = 0; | |
87d10954 DS |
92 | if (inhead && (cp = index(linebuf, ':'))) { |
93 | *cp = 0; | |
94 | if (icequal(linebuf, "status")) { | |
95 | ++cp; | |
9b888765 KS |
96 | if (index(cp, 'R')) |
97 | flag |= MREAD; | |
98 | if (index(cp, 'O')) | |
99 | flag &= ~MNEW; | |
100 | inhead = 0; | |
101 | } | |
102 | } | |
77a2ce8a | 103 | offset += count; |
0154300b | 104 | s += (long) count; |
77a2ce8a KS |
105 | l++; |
106 | maybe = 0; | |
107 | if (linebuf[0] == 0) | |
108 | maybe = 1; | |
109 | } | |
110 | } | |
111 | ||
112 | /* | |
113 | * Drop the passed line onto the passed output buffer. | |
114 | * If a write error occurs, return -1, else the count of | |
115 | * characters written, including the newline. | |
116 | */ | |
117 | ||
118 | putline(obuf, linebuf) | |
119 | FILE *obuf; | |
120 | char *linebuf; | |
121 | { | |
122 | register int c; | |
123 | ||
124 | c = strlen(linebuf); | |
125 | fputs(linebuf, obuf); | |
126 | putc('\n', obuf); | |
127 | if (ferror(obuf)) | |
128 | return(-1); | |
129 | return(c+1); | |
130 | } | |
131 | ||
132 | /* | |
133 | * Read up a line from the specified input into the line | |
134 | * buffer. Return the number of characters read. Do not | |
135 | * include the newline at the end. | |
136 | */ | |
137 | ||
138 | readline(ibuf, linebuf) | |
139 | FILE *ibuf; | |
140 | char *linebuf; | |
141 | { | |
87d10954 | 142 | register int n; |
77a2ce8a | 143 | |
87d10954 DS |
144 | clearerr(ibuf); |
145 | if (fgets(linebuf, LINESIZE, ibuf) == NULL) | |
77a2ce8a | 146 | return(0); |
87d10954 DS |
147 | n = strlen(linebuf); |
148 | if (n >= 1 && linebuf[n-1] == '\n') | |
149 | linebuf[n-1] = '\0'; | |
150 | return(n); | |
77a2ce8a KS |
151 | } |
152 | ||
153 | /* | |
154 | * Return a file buffer all ready to read up the | |
155 | * passed message pointer. | |
156 | */ | |
157 | ||
158 | FILE * | |
159 | setinput(mp) | |
160 | register struct message *mp; | |
161 | { | |
162 | off_t off; | |
163 | ||
164 | fflush(otf); | |
165 | off = mp->m_block; | |
166 | off <<= 9; | |
167 | off += mp->m_offset; | |
168 | if (fseek(itf, off, 0) < 0) { | |
169 | perror("fseek"); | |
170 | panic("temporary file seek"); | |
171 | } | |
172 | return(itf); | |
173 | } | |
174 | ||
175 | /* | |
176 | * Take the data out of the passed ghost file and toss it into | |
177 | * a dynamically allocated message structure. | |
178 | */ | |
179 | ||
180 | makemessage(f) | |
181 | { | |
182 | register struct message *m; | |
183 | register char *mp; | |
184 | register count; | |
185 | ||
186 | mp = calloc((unsigned) (msgCount + 1), sizeof *m); | |
187 | if (mp == NOSTR) { | |
188 | printf("Insufficient memory for %d messages\n", msgCount); | |
189 | exit(1); | |
190 | } | |
838681f8 KS |
191 | if (message != (struct message *) 0) |
192 | cfree((char *) message); | |
77a2ce8a KS |
193 | message = (struct message *) mp; |
194 | dot = message; | |
195 | lseek(f, 0L, 0); | |
196 | while (count = read(f, mp, BUFSIZ)) | |
197 | mp += count; | |
198 | for (m = &message[0]; m < &message[msgCount]; m++) { | |
199 | m->m_size = (m+1)->m_size; | |
200 | m->m_lines = (m+1)->m_lines; | |
9b888765 | 201 | m->m_flag = (m+1)->m_flag; |
77a2ce8a | 202 | } |
0154300b | 203 | message[msgCount].m_size = 0L; |
77a2ce8a KS |
204 | message[msgCount].m_lines = 0; |
205 | } | |
206 | ||
207 | /* | |
208 | * Append the passed message descriptor onto the temp file. | |
209 | * If the write fails, return 1, else 0 | |
210 | */ | |
211 | ||
212 | append(mp, f) | |
213 | struct message *mp; | |
214 | { | |
215 | if (write(f, (char *) mp, sizeof *mp) != sizeof *mp) | |
216 | return(1); | |
217 | return(0); | |
218 | } | |
219 | ||
220 | /* | |
221 | * Delete a file, but only if the file is a plain file. | |
222 | */ | |
223 | ||
224 | remove(name) | |
225 | char name[]; | |
226 | { | |
227 | struct stat statb; | |
228 | extern int errno; | |
229 | ||
230 | if (stat(name, &statb) < 0) | |
231 | return(-1); | |
232 | if ((statb.st_mode & S_IFMT) != S_IFREG) { | |
233 | errno = EISDIR; | |
234 | return(-1); | |
235 | } | |
236 | return(unlink(name)); | |
237 | } | |
238 | ||
239 | /* | |
240 | * Terminate an editing session by attempting to write out the user's | |
5ab0568d | 241 | * file from the temporary. Save any new stuff appended to the file. |
77a2ce8a | 242 | */ |
77a2ce8a KS |
243 | edstop() |
244 | { | |
245 | register int gotcha, c; | |
246 | register struct message *mp; | |
8b5a06af | 247 | FILE *obuf, *ibuf, *readstat; |
5ab0568d | 248 | struct stat statb; |
8b5a06af | 249 | char tempname[30], *id; |
b3d49ad3 | 250 | int (*sigs[3])(); |
77a2ce8a | 251 | |
838681f8 KS |
252 | if (readonly) |
253 | return; | |
985c722d | 254 | holdsigs(); |
8b5a06af KS |
255 | if (Tflag != NOSTR) { |
256 | if ((readstat = fopen(Tflag, "w")) == NULL) | |
257 | Tflag = NOSTR; | |
258 | } | |
953c713a KS |
259 | for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) { |
260 | if (mp->m_flag & MNEW) { | |
261 | mp->m_flag &= ~MNEW; | |
262 | mp->m_flag |= MSTATUS; | |
263 | } | |
8b5a06af | 264 | if (mp->m_flag & (MODIFY|MDELETED|MSTATUS)) |
77a2ce8a | 265 | gotcha++; |
8b5a06af KS |
266 | if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) { |
267 | if ((id = hfield("article-id", mp)) != NOSTR) | |
268 | fprintf(readstat, "%s\n", id); | |
77a2ce8a | 269 | } |
953c713a | 270 | } |
8b5a06af KS |
271 | if (Tflag != NOSTR) |
272 | fclose(readstat); | |
d85bd93d | 273 | if (!gotcha || Tflag != NOSTR) |
b3d49ad3 | 274 | goto done; |
5ab0568d KS |
275 | ibuf = NULL; |
276 | if (stat(editfile, &statb) >= 0 && statb.st_size > mailsize) { | |
277 | strcpy(tempname, "/tmp/mboxXXXXXX"); | |
278 | mktemp(tempname); | |
279 | if ((obuf = fopen(tempname, "w")) == NULL) { | |
280 | perror(tempname); | |
985c722d | 281 | relsesigs(); |
5ab0568d KS |
282 | reset(0); |
283 | } | |
284 | if ((ibuf = fopen(editfile, "r")) == NULL) { | |
285 | perror(editfile); | |
286 | fclose(obuf); | |
287 | remove(tempname); | |
985c722d | 288 | relsesigs(); |
5ab0568d KS |
289 | reset(0); |
290 | } | |
0c3a2f40 | 291 | fseek(ibuf, mailsize, 0); |
5ab0568d KS |
292 | while ((c = getc(ibuf)) != EOF) |
293 | putc(c, obuf); | |
294 | fclose(ibuf); | |
295 | fclose(obuf); | |
296 | if ((ibuf = fopen(tempname, "r")) == NULL) { | |
297 | perror(tempname); | |
298 | remove(tempname); | |
985c722d | 299 | relsesigs(); |
5ab0568d KS |
300 | reset(0); |
301 | } | |
302 | remove(tempname); | |
303 | } | |
77a2ce8a | 304 | printf("\"%s\" ", editfile); |
80187484 | 305 | fflush(stdout); |
b17445e6 | 306 | if ((obuf = fopen(editfile, "r+")) == NULL) { |
77a2ce8a | 307 | perror(editfile); |
985c722d | 308 | relsesigs(); |
77a2ce8a KS |
309 | reset(0); |
310 | } | |
b17445e6 | 311 | trunc(obuf); |
77a2ce8a KS |
312 | c = 0; |
313 | for (mp = &message[0]; mp < &message[msgCount]; mp++) { | |
314 | if ((mp->m_flag & MDELETED) != 0) | |
315 | continue; | |
316 | c++; | |
c718ab56 | 317 | if (send(mp, obuf, 0) < 0) { |
77a2ce8a | 318 | perror(editfile); |
985c722d | 319 | relsesigs(); |
77a2ce8a KS |
320 | reset(0); |
321 | } | |
322 | } | |
5ab0568d KS |
323 | gotcha = (c == 0 && ibuf == NULL); |
324 | if (ibuf != NULL) { | |
325 | while ((c = getc(ibuf)) != EOF) | |
326 | putc(c, obuf); | |
327 | fclose(ibuf); | |
328 | } | |
77a2ce8a KS |
329 | fflush(obuf); |
330 | if (ferror(obuf)) { | |
331 | perror(editfile); | |
985c722d | 332 | relsesigs(); |
77a2ce8a KS |
333 | reset(0); |
334 | } | |
5ab0568d KS |
335 | fclose(obuf); |
336 | if (gotcha) { | |
77a2ce8a KS |
337 | remove(editfile); |
338 | printf("removed\n"); | |
339 | } | |
340 | else | |
341 | printf("complete\n"); | |
80187484 | 342 | fflush(stdout); |
b3d49ad3 KS |
343 | |
344 | done: | |
985c722d | 345 | relsesigs(); |
b3d49ad3 KS |
346 | } |
347 | ||
f5df67b9 | 348 | static int sigdepth = 0; /* depth of holdsigs() */ |
56d6aa4a | 349 | static int omask = 0; |
b3d49ad3 | 350 | /* |
985c722d | 351 | * Hold signals SIGHUP - SIGQUIT. |
b3d49ad3 | 352 | */ |
985c722d | 353 | holdsigs() |
b3d49ad3 KS |
354 | { |
355 | register int i; | |
356 | ||
f5df67b9 | 357 | if (sigdepth++ == 0) |
56d6aa4a | 358 | omask = sigblock(sigmask(SIGHUP)|sigmask(SIGINT)|sigmask(SIGQUIT)); |
b3d49ad3 KS |
359 | } |
360 | ||
361 | /* | |
985c722d | 362 | * Release signals SIGHUP - SIGQUIT |
b3d49ad3 | 363 | */ |
985c722d | 364 | relsesigs() |
b3d49ad3 KS |
365 | { |
366 | register int i; | |
985c722d | 367 | |
f5df67b9 | 368 | if (--sigdepth == 0) |
56d6aa4a | 369 | sigsetmask(omask); |
77a2ce8a KS |
370 | } |
371 | ||
77a2ce8a KS |
372 | /* |
373 | * Open a temp file by creating, closing, unlinking, and | |
374 | * reopening. Return the open file descriptor. | |
375 | */ | |
376 | ||
377 | opentemp(file) | |
378 | char file[]; | |
379 | { | |
380 | register int f; | |
381 | ||
382 | if ((f = creat(file, 0600)) < 0) { | |
383 | perror(file); | |
384 | return(-1); | |
385 | } | |
386 | close(f); | |
387 | if ((f = open(file, 2)) < 0) { | |
388 | perror(file); | |
389 | remove(file); | |
390 | return(-1); | |
391 | } | |
392 | remove(file); | |
393 | return(f); | |
394 | } | |
395 | ||
77a2ce8a KS |
396 | /* |
397 | * Determine the size of the file possessed by | |
398 | * the passed buffer. | |
399 | */ | |
400 | ||
401 | off_t | |
402 | fsize(iob) | |
403 | FILE *iob; | |
404 | { | |
405 | register int f; | |
406 | struct stat sbuf; | |
407 | ||
408 | f = fileno(iob); | |
409 | if (fstat(f, &sbuf) < 0) | |
410 | return(0); | |
411 | return(sbuf.st_size); | |
412 | } | |
413 | ||
414 | /* | |
415 | * Take a file name, possibly with shell meta characters | |
416 | * in it and expand it by using "sh -c echo filename" | |
417 | * Return the file name as a dynamic string. | |
418 | */ | |
419 | ||
420 | char * | |
421 | expand(name) | |
422 | char name[]; | |
423 | { | |
424 | char xname[BUFSIZ]; | |
425 | char cmdbuf[BUFSIZ]; | |
426 | register int pid, l, rc; | |
427 | register char *cp, *Shell; | |
428 | int s, pivec[2], (*sigint)(); | |
429 | struct stat sbuf; | |
430 | ||
df3c4fbd KS |
431 | if (name[0] == '+' && getfold(cmdbuf) >= 0) { |
432 | sprintf(xname, "%s/%s", cmdbuf, name + 1); | |
38a42545 KS |
433 | return(expand(savestr(xname))); |
434 | } | |
77a2ce8a KS |
435 | if (!anyof(name, "~{[*?$`'\"\\")) |
436 | return(name); | |
77a2ce8a KS |
437 | if (pipe(pivec) < 0) { |
438 | perror("pipe"); | |
77a2ce8a KS |
439 | return(name); |
440 | } | |
441 | sprintf(cmdbuf, "echo %s", name); | |
442 | if ((pid = vfork()) == 0) { | |
9ff57b47 | 443 | sigchild(); |
77a2ce8a KS |
444 | Shell = value("SHELL"); |
445 | if (Shell == NOSTR) | |
446 | Shell = SHELL; | |
447 | close(pivec[0]); | |
448 | close(1); | |
449 | dup(pivec[1]); | |
450 | close(pivec[1]); | |
451 | close(2); | |
452 | execl(Shell, Shell, "-c", cmdbuf, 0); | |
453 | _exit(1); | |
454 | } | |
455 | if (pid == -1) { | |
456 | perror("fork"); | |
457 | close(pivec[0]); | |
458 | close(pivec[1]); | |
459 | return(NOSTR); | |
460 | } | |
461 | close(pivec[1]); | |
462 | l = read(pivec[0], xname, BUFSIZ); | |
463 | close(pivec[0]); | |
464 | while (wait(&s) != pid); | |
465 | ; | |
466 | s &= 0377; | |
467 | if (s != 0 && s != SIGPIPE) { | |
468 | fprintf(stderr, "\"Echo\" failed\n"); | |
469 | goto err; | |
470 | } | |
471 | if (l < 0) { | |
472 | perror("read"); | |
473 | goto err; | |
474 | } | |
475 | if (l == 0) { | |
476 | fprintf(stderr, "\"%s\": No match\n", name); | |
477 | goto err; | |
478 | } | |
479 | if (l == BUFSIZ) { | |
480 | fprintf(stderr, "Buffer overflow expanding \"%s\"\n", name); | |
481 | goto err; | |
482 | } | |
483 | xname[l] = 0; | |
484 | for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--) | |
485 | ; | |
486 | *++cp = '\0'; | |
487 | if (any(' ', xname) && stat(xname, &sbuf) < 0) { | |
488 | fprintf(stderr, "\"%s\": Ambiguous\n", name); | |
489 | goto err; | |
490 | } | |
77a2ce8a KS |
491 | return(savestr(xname)); |
492 | ||
493 | err: | |
77a2ce8a KS |
494 | return(NOSTR); |
495 | } | |
496 | ||
df3c4fbd KS |
497 | /* |
498 | * Determine the current folder directory name. | |
499 | */ | |
500 | getfold(name) | |
501 | char *name; | |
502 | { | |
503 | char *folder; | |
504 | ||
505 | if ((folder = value("folder")) == NOSTR) | |
506 | return(-1); | |
507 | if (*folder == '/') | |
508 | strcpy(name, folder); | |
509 | else | |
510 | sprintf(name, "%s/%s", homedir, folder); | |
511 | return(0); | |
512 | } | |
513 | ||
77a2ce8a KS |
514 | /* |
515 | * A nicer version of Fdopen, which allows us to fclose | |
516 | * without losing the open file. | |
517 | */ | |
518 | ||
519 | FILE * | |
520 | Fdopen(fildes, mode) | |
521 | char *mode; | |
522 | { | |
523 | register int f; | |
524 | FILE *fdopen(); | |
525 | ||
526 | f = dup(fildes); | |
527 | if (f < 0) { | |
528 | perror("dup"); | |
529 | return(NULL); | |
530 | } | |
531 | return(fdopen(f, mode)); | |
532 | } |