Commit | Line | Data |
---|---|---|
237e0016 RS |
1 | /* movemail foo bar -- move file foo to file bar, |
2 | locking file foo the way /bin/mail respects. | |
9fd54390 | 3 | Copyright (C) 1986, 1992 Free Software Foundation, Inc. |
237e0016 RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
93320c23 JA |
7 | GNU Emacs is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 1, or (at your option) | |
10 | any later version. | |
11 | ||
237e0016 | 12 | GNU Emacs is distributed in the hope that it will be useful, |
93320c23 JA |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
237e0016 | 16 | |
93320c23 JA |
17 | You should have received a copy of the GNU General Public License |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
237e0016 | 20 | |
08d0752f RS |
21 | /* Important notice: defining MAIL_USE_FLOCK *will cause loss of mail* |
22 | if you do it on a system that does not normally use flock as its way of | |
23 | interlocking access to inbox files. The setting of MAIL_USE_FLOCK | |
24 | *must agree* with the system's own conventions. | |
25 | It is not a choice that is up to you. | |
26 | ||
27 | So, if your system uses lock files rather than flock, then the only way | |
28 | you can get proper operation is to enable movemail to write lockfiles there. | |
29 | This means you must either give that directory access modes | |
30 | that permit everyone to write lockfiles in it, or you must make movemail | |
31 | a setuid or setgid program. */ | |
32 | ||
237e0016 RS |
33 | /* |
34 | * Modified January, 1986 by Michael R. Gretzinger (Project Athena) | |
35 | * | |
36 | * Added POP (Post Office Protocol) service. When compiled -DPOP | |
37 | * movemail will accept input filename arguments of the form | |
38 | * "po:username". This will cause movemail to open a connection to | |
39 | * a pop server running on $MAILHOST (environment variable). Movemail | |
40 | * must be setuid to root in order to work with POP. | |
41 | * | |
42 | * New module: popmail.c | |
43 | * Modified routines: | |
cfa191ff | 44 | * main - added code within #ifdef MAIL_USE_POP; added setuid (getuid ()) |
237e0016 RS |
45 | * after POP code. |
46 | * New routines in movemail.c: | |
47 | * get_errmsg - return pointer to system error message | |
48 | * | |
49 | */ | |
50 | ||
51 | #include <sys/types.h> | |
52 | #include <sys/stat.h> | |
53 | #include <sys/file.h> | |
54 | #include <errno.h> | |
55 | #define NO_SHORTNAMES /* Tell config not to load remap.h */ | |
18160b98 | 56 | #include <../src/config.h> |
237e0016 RS |
57 | |
58 | #ifdef USG | |
59 | #include <fcntl.h> | |
60 | #include <unistd.h> | |
4ec9a77a RS |
61 | #ifndef F_OK |
62 | #define F_OK 0 | |
63 | #define X_OK 1 | |
64 | #define W_OK 2 | |
65 | #define R_OK 4 | |
66 | #endif | |
237e0016 RS |
67 | #endif /* USG */ |
68 | ||
69 | #ifdef XENIX | |
70 | #include <sys/locking.h> | |
71 | #endif | |
72 | ||
4293ba7f RS |
73 | #ifdef MAIL_USE_MMDF |
74 | extern int lk_open (), lk_close (); | |
75 | #endif | |
76 | ||
237e0016 RS |
77 | /* Cancel substitutions made by config.h for Emacs. */ |
78 | #undef open | |
79 | #undef read | |
80 | #undef write | |
81 | #undef close | |
82 | ||
e97dd183 | 83 | char *malloc (); |
d8cafeb5 | 84 | char *strcpy (); |
237e0016 | 85 | char *concat (); |
e97dd183 DM |
86 | char *xmalloc (); |
87 | #ifndef errno | |
237e0016 | 88 | extern int errno; |
e97dd183 | 89 | #endif |
237e0016 RS |
90 | |
91 | /* Nonzero means this is name of a lock file to delete on fatal error. */ | |
92 | char *delete_lockname; | |
93 | ||
94 | main (argc, argv) | |
95 | int argc; | |
96 | char **argv; | |
97 | { | |
98 | char *inname, *outname; | |
99 | int indesc, outdesc; | |
237e0016 RS |
100 | int nread; |
101 | ||
102 | #ifndef MAIL_USE_FLOCK | |
103 | struct stat st; | |
104 | long now; | |
105 | int tem; | |
106 | char *lockname, *p; | |
906ad89d | 107 | char *tempname; |
237e0016 RS |
108 | int desc; |
109 | #endif /* not MAIL_USE_FLOCK */ | |
110 | ||
111 | delete_lockname = 0; | |
112 | ||
113 | if (argc < 3) | |
114 | fatal ("two arguments required"); | |
115 | ||
116 | inname = argv[1]; | |
117 | outname = argv[2]; | |
118 | ||
4293ba7f RS |
119 | #ifdef MAIL_USE_MMDF |
120 | mmdf_init (argv[0]); | |
121 | #endif | |
122 | ||
b1ce62a8 | 123 | /* Check access to output file. */ |
237e0016 RS |
124 | if (access (outname, F_OK) == 0 && access (outname, W_OK) != 0) |
125 | pfatal_with_name (outname); | |
126 | ||
127 | /* Also check that outname's directory is writeable to the real uid. */ | |
128 | { | |
129 | char *buf = (char *) malloc (strlen (outname) + 1); | |
130 | char *p, q; | |
131 | strcpy (buf, outname); | |
132 | p = buf + strlen (buf); | |
133 | while (p > buf && p[-1] != '/') | |
134 | *--p = 0; | |
135 | if (p == buf) | |
136 | *p++ = '.'; | |
137 | if (access (buf, W_OK) != 0) | |
138 | pfatal_with_name (buf); | |
139 | free (buf); | |
140 | } | |
141 | ||
142 | #ifdef MAIL_USE_POP | |
12a0565a | 143 | if (!strncmp (inname, "po:", 3)) |
237e0016 RS |
144 | { |
145 | int status; char *user; | |
146 | ||
12a0565a JB |
147 | for (user = &inname[strlen (inname) - 1]; user >= inname; user--) |
148 | if (*user == ':') | |
149 | break; | |
150 | ||
237e0016 RS |
151 | status = popmail (user, outname); |
152 | exit (status); | |
153 | } | |
154 | ||
cfa191ff | 155 | setuid (getuid ()); |
237e0016 RS |
156 | #endif /* MAIL_USE_POP */ |
157 | ||
b1ce62a8 RS |
158 | /* Check access to input file. */ |
159 | if (access (inname, R_OK | W_OK) != 0) | |
160 | pfatal_with_name (inname); | |
161 | ||
4293ba7f | 162 | #ifndef MAIL_USE_MMDF |
237e0016 RS |
163 | #ifndef MAIL_USE_FLOCK |
164 | /* Use a lock file named /usr/spool/mail/$USER.lock: | |
165 | If it exists, the mail file is locked. */ | |
06000e3c RS |
166 | /* Note: this locking mechanism is *required* by the mailer |
167 | (on systems which use it) to prevent loss of mail. | |
168 | ||
169 | On systems that use a lock file, extracting the mail without locking | |
170 | WILL occasionally cause loss of mail due to timing errors! | |
171 | ||
172 | So, if creation of the lock file fails | |
173 | due to access permission on /usr/spool/mail, | |
174 | you simply MUST change the permission | |
175 | and/or make movemail a setgid program | |
176 | so it can create lock files properly. | |
177 | ||
178 | You might also wish to verify that your system is one | |
179 | which uses lock files for this purpose. Some systems use other methods. | |
180 | ||
181 | If your system uses the `flock' system call for mail locking, | |
182 | define MAIL_USE_FLOCK in config.h or the s-*.h file | |
183 | and recompile movemail. If the s- file for your system | |
184 | should define MAIL_USE_FLOCK but does not, send a bug report | |
185 | to bug-gnu-emacs@prep.ai.mit.edu so we can fix it. */ | |
186 | ||
237e0016 | 187 | lockname = concat (inname, ".lock", ""); |
08564963 | 188 | tempname = strcpy (xmalloc (strlen (inname)+1), inname); |
237e0016 RS |
189 | p = tempname + strlen (tempname); |
190 | while (p != tempname && p[-1] != '/') | |
191 | p--; | |
192 | *p = 0; | |
193 | strcpy (p, "EXXXXXX"); | |
194 | mktemp (tempname); | |
cfa191ff | 195 | unlink (tempname); |
237e0016 RS |
196 | |
197 | while (1) | |
198 | { | |
199 | /* Create the lock file, but not under the lock file name. */ | |
200 | /* Give up if cannot do that. */ | |
201 | desc = open (tempname, O_WRONLY | O_CREAT, 0666); | |
202 | if (desc < 0) | |
06000e3c | 203 | pfatal_with_name ("lock file--see source file etc/movemail.c"); |
237e0016 RS |
204 | close (desc); |
205 | ||
206 | tem = link (tempname, lockname); | |
cfa191ff | 207 | unlink (tempname); |
237e0016 RS |
208 | if (tem >= 0) |
209 | break; | |
210 | sleep (1); | |
211 | ||
212 | /* If lock file is a minute old, unlock it. */ | |
213 | if (stat (lockname, &st) >= 0) | |
214 | { | |
215 | now = time (0); | |
216 | if (st.st_ctime < now - 60) | |
cfa191ff | 217 | unlink (lockname); |
237e0016 RS |
218 | } |
219 | } | |
220 | ||
221 | delete_lockname = lockname; | |
222 | #endif /* not MAIL_USE_FLOCK */ | |
223 | ||
224 | #ifdef MAIL_USE_FLOCK | |
225 | indesc = open (inname, O_RDWR); | |
226 | #else /* if not MAIL_USE_FLOCK */ | |
227 | indesc = open (inname, O_RDONLY); | |
228 | #endif /* not MAIL_USE_FLOCK */ | |
4293ba7f RS |
229 | #else /* MAIL_USE_MMDF */ |
230 | indesc = lk_open (inname, O_RDONLY, 0, 0, 10); | |
231 | #endif /* MAIL_USE_MMDF */ | |
232 | ||
237e0016 RS |
233 | if (indesc < 0) |
234 | pfatal_with_name (inname); | |
235 | ||
cfa191ff | 236 | #if defined (BSD) || defined (XENIX) |
237e0016 RS |
237 | /* In case movemail is setuid to root, make sure the user can |
238 | read the output file. */ | |
239 | /* This is desirable for all systems | |
240 | but I don't want to assume all have the umask system call */ | |
241 | umask (umask (0) & 0333); | |
242 | #endif /* BSD or Xenix */ | |
243 | outdesc = open (outname, O_WRONLY | O_CREAT | O_EXCL, 0666); | |
244 | if (outdesc < 0) | |
245 | pfatal_with_name (outname); | |
246 | #ifdef MAIL_USE_FLOCK | |
247 | #ifdef XENIX | |
248 | if (locking (indesc, LK_RLCK, 0L) < 0) pfatal_with_name (inname); | |
249 | #else | |
250 | if (flock (indesc, LOCK_EX) < 0) pfatal_with_name (inname); | |
251 | #endif | |
252 | #endif /* MAIL_USE_FLOCK */ | |
253 | ||
08564963 JB |
254 | { |
255 | char buf[1024]; | |
256 | ||
257 | while (1) | |
258 | { | |
259 | nread = read (indesc, buf, sizeof buf); | |
260 | if (nread != write (outdesc, buf, nread)) | |
261 | { | |
262 | int saved_errno = errno; | |
263 | unlink (outname); | |
264 | errno = saved_errno; | |
265 | pfatal_with_name (outname); | |
266 | } | |
267 | if (nread < sizeof buf) | |
268 | break; | |
269 | } | |
270 | } | |
237e0016 RS |
271 | |
272 | #ifdef BSD | |
cfa191ff RS |
273 | if (fsync (outdesc) < 0) |
274 | pfatal_and_delete (outname); | |
237e0016 RS |
275 | #endif |
276 | ||
277 | /* Check to make sure no errors before we zap the inbox. */ | |
278 | if (close (outdesc) != 0) | |
cfa191ff | 279 | pfatal_and_delete (outname); |
237e0016 RS |
280 | |
281 | #ifdef MAIL_USE_FLOCK | |
cfa191ff | 282 | #if defined (STRIDE) || defined (XENIX) |
237e0016 | 283 | /* Stride, xenix have file locking, but no ftruncate. This mess will do. */ |
cfa191ff | 284 | close (open (inname, O_CREAT | O_TRUNC | O_RDWR, 0666)); |
237e0016 | 285 | #else |
cfa191ff | 286 | ftruncate (indesc, 0L); |
237e0016 RS |
287 | #endif /* STRIDE or XENIX */ |
288 | #endif /* MAIL_USE_FLOCK */ | |
4293ba7f RS |
289 | |
290 | #ifdef MAIL_USE_MMDF | |
291 | lk_close (indesc, 0, 0, 0); | |
292 | #else | |
237e0016 | 293 | close (indesc); |
4293ba7f | 294 | #endif |
237e0016 RS |
295 | |
296 | #ifndef MAIL_USE_FLOCK | |
297 | /* Delete the input file; if we can't, at least get rid of its contents. */ | |
e97dd183 DM |
298 | #ifdef MAIL_UNLINK_SPOOL |
299 | /* This is generally bad to do, because it destroys the permissions | |
300 | that were set on the file. Better to just empty the file. */ | |
301 | if (unlink (inname) < 0 && errno != ENOENT) | |
302 | #endif /* MAIL_UNLINK_SPOOL */ | |
303 | creat (inname, 0600); | |
4293ba7f RS |
304 | #ifndef MAIL_USE_MMDF |
305 | unlink (lockname); | |
306 | #endif /* not MAIL_USE_MMDF */ | |
237e0016 RS |
307 | #endif /* not MAIL_USE_FLOCK */ |
308 | exit (0); | |
309 | } | |
310 | \f | |
311 | /* Print error message and exit. */ | |
312 | ||
313 | fatal (s1, s2) | |
314 | char *s1, *s2; | |
315 | { | |
316 | if (delete_lockname) | |
317 | unlink (delete_lockname); | |
318 | error (s1, s2); | |
319 | exit (1); | |
320 | } | |
321 | ||
322 | /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
323 | ||
b1ce62a8 RS |
324 | error (s1, s2, s3) |
325 | char *s1, *s2, *s3; | |
237e0016 RS |
326 | { |
327 | printf ("movemail: "); | |
b1ce62a8 | 328 | printf (s1, s2, s3); |
237e0016 RS |
329 | printf ("\n"); |
330 | } | |
331 | ||
332 | pfatal_with_name (name) | |
333 | char *name; | |
334 | { | |
335 | extern int errno, sys_nerr; | |
336 | extern char *sys_errlist[]; | |
337 | char *s; | |
338 | ||
339 | if (errno < sys_nerr) | |
340 | s = concat ("", sys_errlist[errno], " for %s"); | |
341 | else | |
342 | s = "cannot open %s"; | |
343 | fatal (s, name); | |
344 | } | |
345 | ||
cfa191ff RS |
346 | pfatal_and_delete (name) |
347 | char *name; | |
348 | { | |
349 | extern int errno, sys_nerr; | |
350 | extern char *sys_errlist[]; | |
351 | char *s; | |
352 | ||
353 | if (errno < sys_nerr) | |
354 | s = concat ("", sys_errlist[errno], " for %s"); | |
355 | else | |
356 | s = "cannot open %s"; | |
357 | ||
358 | unlink (name); | |
359 | fatal (s, name); | |
360 | } | |
361 | ||
237e0016 RS |
362 | /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */ |
363 | ||
364 | char * | |
365 | concat (s1, s2, s3) | |
366 | char *s1, *s2, *s3; | |
367 | { | |
368 | int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3); | |
369 | char *result = (char *) xmalloc (len1 + len2 + len3 + 1); | |
370 | ||
371 | strcpy (result, s1); | |
372 | strcpy (result + len1, s2); | |
373 | strcpy (result + len1 + len2, s3); | |
374 | *(result + len1 + len2 + len3) = 0; | |
375 | ||
376 | return result; | |
377 | } | |
378 | ||
379 | /* Like malloc but get fatal error if memory is exhausted. */ | |
380 | ||
e97dd183 | 381 | char * |
237e0016 | 382 | xmalloc (size) |
e97dd183 | 383 | unsigned size; |
237e0016 | 384 | { |
e97dd183 | 385 | char *result = malloc (size); |
237e0016 RS |
386 | if (!result) |
387 | fatal ("virtual memory exhausted", 0); | |
388 | return result; | |
389 | } | |
390 | \f | |
391 | /* This is the guts of the interface to the Post Office Protocol. */ | |
392 | ||
393 | #ifdef MAIL_USE_POP | |
394 | ||
395 | #include <sys/socket.h> | |
396 | #include <netinet/in.h> | |
397 | #include <netdb.h> | |
398 | #include <stdio.h> | |
cecf0f21 | 399 | #include <pwd.h> |
237e0016 RS |
400 | |
401 | #ifdef USG | |
402 | #include <fcntl.h> | |
403 | /* Cancel substitutions made by config.h for Emacs. */ | |
404 | #undef open | |
405 | #undef read | |
406 | #undef write | |
407 | #undef close | |
408 | #endif /* USG */ | |
409 | ||
410 | #define NOTOK (-1) | |
411 | #define OK 0 | |
412 | #define DONE 1 | |
413 | ||
414 | char *progname; | |
415 | FILE *sfi; | |
416 | FILE *sfo; | |
417 | char Errmsg[80]; | |
418 | ||
419 | static int debug = 0; | |
420 | ||
b1ce62a8 RS |
421 | char *get_errmsg (); |
422 | char *getenv (); | |
423 | int mbx_write (); | |
424 | ||
425 | popmail (user, outfile) | |
426 | char *user; | |
427 | char *outfile; | |
237e0016 | 428 | { |
b1ce62a8 RS |
429 | char *host; |
430 | int nmsgs, nbytes; | |
431 | char response[128]; | |
432 | register int i; | |
433 | int mbfi; | |
434 | FILE *mbf; | |
cecf0f21 RS |
435 | struct passwd *pw = (struct passwd *) getpwuid (getuid ()); |
436 | if (pw == NULL) | |
437 | fatal ("cannot determine user name"); | |
b1ce62a8 RS |
438 | |
439 | host = getenv ("MAILHOST"); | |
440 | if (host == NULL) | |
441 | { | |
442 | fatal ("no MAILHOST defined"); | |
237e0016 RS |
443 | } |
444 | ||
b1ce62a8 RS |
445 | if (pop_init (host) == NOTOK) |
446 | { | |
cfa191ff | 447 | fatal (Errmsg); |
237e0016 RS |
448 | } |
449 | ||
b1ce62a8 RS |
450 | if (getline (response, sizeof response, sfi) != OK) |
451 | { | |
cfa191ff | 452 | fatal (response); |
237e0016 RS |
453 | } |
454 | ||
cfa191ff | 455 | if (pop_command ("USER %s", user) == NOTOK |
cecf0f21 | 456 | || pop_command ("RPOP %s", pw->pw_name) == NOTOK) |
b1ce62a8 | 457 | { |
b1ce62a8 | 458 | pop_command ("QUIT"); |
cfa191ff | 459 | fatal (Errmsg); |
237e0016 RS |
460 | } |
461 | ||
b1ce62a8 RS |
462 | if (pop_stat (&nmsgs, &nbytes) == NOTOK) |
463 | { | |
b1ce62a8 | 464 | pop_command ("QUIT"); |
cfa191ff | 465 | fatal (Errmsg); |
237e0016 RS |
466 | } |
467 | ||
b1ce62a8 RS |
468 | if (!nmsgs) |
469 | { | |
470 | pop_command ("QUIT"); | |
471 | return 0; | |
472 | } | |
473 | ||
474 | mbfi = open (outfile, O_WRONLY | O_CREAT | O_EXCL, 0666); | |
475 | if (mbfi < 0) | |
476 | { | |
477 | pop_command ("QUIT"); | |
cfa191ff | 478 | pfatal_and_delete (outfile); |
b1ce62a8 RS |
479 | } |
480 | fchown (mbfi, getuid (), -1); | |
481 | ||
482 | if ((mbf = fdopen (mbfi, "w")) == NULL) | |
483 | { | |
484 | pop_command ("QUIT"); | |
cfa191ff | 485 | pfatal_and_delete (outfile); |
b1ce62a8 RS |
486 | } |
487 | ||
488 | for (i = 1; i <= nmsgs; i++) | |
489 | { | |
490 | mbx_delimit_begin (mbf); | |
491 | if (pop_retr (i, mbx_write, mbf) != OK) | |
492 | { | |
b1ce62a8 RS |
493 | pop_command ("QUIT"); |
494 | close (mbfi); | |
cfa191ff RS |
495 | unlink (outfile); |
496 | fatal (Errmsg); | |
237e0016 | 497 | } |
b1ce62a8 RS |
498 | mbx_delimit_end (mbf); |
499 | fflush (mbf); | |
237e0016 RS |
500 | } |
501 | ||
cfa191ff RS |
502 | if (fsync (mbfi) < 0) |
503 | { | |
504 | pop_command ("QUIT"); | |
505 | pfatal_and_delete (outfile); | |
506 | } | |
507 | ||
508 | if (close (mbfi) == -1) | |
509 | { | |
510 | pop_command ("QUIT"); | |
511 | pfatal_and_delete (outfile); | |
512 | } | |
513 | ||
b1ce62a8 RS |
514 | for (i = 1; i <= nmsgs; i++) |
515 | { | |
516 | if (pop_command ("DELE %d", i) == NOTOK) | |
517 | { | |
cfa191ff | 518 | /* Better to ignore this failure. */ |
237e0016 RS |
519 | } |
520 | } | |
521 | ||
b1ce62a8 | 522 | pop_command ("QUIT"); |
cfa191ff | 523 | return (0); |
237e0016 RS |
524 | } |
525 | ||
b1ce62a8 RS |
526 | pop_init (host) |
527 | char *host; | |
237e0016 | 528 | { |
b1ce62a8 RS |
529 | register struct hostent *hp; |
530 | register struct servent *sp; | |
531 | int lport = IPPORT_RESERVED - 1; | |
532 | struct sockaddr_in sin; | |
533 | register int s; | |
534 | ||
535 | hp = gethostbyname (host); | |
536 | if (hp == NULL) | |
537 | { | |
538 | sprintf (Errmsg, "MAILHOST unknown: %s", host); | |
539 | return NOTOK; | |
237e0016 RS |
540 | } |
541 | ||
b1ce62a8 RS |
542 | sp = getservbyname ("pop", "tcp"); |
543 | if (sp == 0) | |
544 | { | |
545 | strcpy (Errmsg, "tcp/pop: unknown service"); | |
546 | return NOTOK; | |
237e0016 RS |
547 | } |
548 | ||
b1ce62a8 RS |
549 | sin.sin_family = hp->h_addrtype; |
550 | bcopy (hp->h_addr, (char *)&sin.sin_addr, hp->h_length); | |
551 | sin.sin_port = sp->s_port; | |
552 | s = rresvport (&lport); | |
553 | if (s < 0) | |
554 | { | |
555 | sprintf (Errmsg, "error creating socket: %s", get_errmsg ()); | |
556 | return NOTOK; | |
237e0016 RS |
557 | } |
558 | ||
b1ce62a8 RS |
559 | if (connect (s, (char *)&sin, sizeof sin) < 0) |
560 | { | |
561 | sprintf (Errmsg, "error during connect: %s", get_errmsg ()); | |
562 | close (s); | |
563 | return NOTOK; | |
237e0016 RS |
564 | } |
565 | ||
b1ce62a8 RS |
566 | sfi = fdopen (s, "r"); |
567 | sfo = fdopen (s, "w"); | |
568 | if (sfi == NULL || sfo == NULL) | |
569 | { | |
570 | sprintf (Errmsg, "error in fdopen: %s", get_errmsg ()); | |
571 | close (s); | |
572 | return NOTOK; | |
237e0016 RS |
573 | } |
574 | ||
b1ce62a8 | 575 | return OK; |
237e0016 RS |
576 | } |
577 | ||
b1ce62a8 RS |
578 | pop_command (fmt, a, b, c, d) |
579 | char *fmt; | |
237e0016 | 580 | { |
b1ce62a8 RS |
581 | char buf[128]; |
582 | char errmsg[64]; | |
237e0016 | 583 | |
b1ce62a8 | 584 | sprintf (buf, fmt, a, b, c, d); |
237e0016 | 585 | |
b1ce62a8 RS |
586 | if (debug) fprintf (stderr, "---> %s\n", buf); |
587 | if (putline (buf, Errmsg, sfo) == NOTOK) return NOTOK; | |
237e0016 | 588 | |
b1ce62a8 RS |
589 | if (getline (buf, sizeof buf, sfi) != OK) |
590 | { | |
591 | strcpy (Errmsg, buf); | |
592 | return NOTOK; | |
237e0016 RS |
593 | } |
594 | ||
cfa191ff RS |
595 | if (debug) |
596 | fprintf (stderr, "<--- %s\n", buf); | |
b1ce62a8 RS |
597 | if (*buf != '+') |
598 | { | |
599 | strcpy (Errmsg, buf); | |
600 | return NOTOK; | |
601 | } | |
602 | else | |
603 | { | |
604 | return OK; | |
237e0016 RS |
605 | } |
606 | } | |
607 | ||
608 | ||
b1ce62a8 RS |
609 | pop_stat (nmsgs, nbytes) |
610 | int *nmsgs, *nbytes; | |
237e0016 | 611 | { |
b1ce62a8 | 612 | char buf[128]; |
237e0016 | 613 | |
cfa191ff RS |
614 | if (debug) |
615 | fprintf (stderr, "---> STAT\n"); | |
616 | if (putline ("STAT", Errmsg, sfo) == NOTOK) | |
617 | return NOTOK; | |
237e0016 | 618 | |
b1ce62a8 RS |
619 | if (getline (buf, sizeof buf, sfi) != OK) |
620 | { | |
621 | strcpy (Errmsg, buf); | |
622 | return NOTOK; | |
237e0016 RS |
623 | } |
624 | ||
b1ce62a8 RS |
625 | if (debug) fprintf (stderr, "<--- %s\n", buf); |
626 | if (*buf != '+') | |
627 | { | |
628 | strcpy (Errmsg, buf); | |
629 | return NOTOK; | |
630 | } | |
631 | else | |
632 | { | |
633 | sscanf (buf, "+OK %d %d", nmsgs, nbytes); | |
634 | return OK; | |
237e0016 RS |
635 | } |
636 | } | |
637 | ||
b1ce62a8 RS |
638 | pop_retr (msgno, action, arg) |
639 | int (*action)(); | |
237e0016 | 640 | { |
b1ce62a8 | 641 | char buf[128]; |
237e0016 | 642 | |
b1ce62a8 RS |
643 | sprintf (buf, "RETR %d", msgno); |
644 | if (debug) fprintf (stderr, "%s\n", buf); | |
645 | if (putline (buf, Errmsg, sfo) == NOTOK) return NOTOK; | |
237e0016 | 646 | |
b1ce62a8 RS |
647 | if (getline (buf, sizeof buf, sfi) != OK) |
648 | { | |
649 | strcpy (Errmsg, buf); | |
650 | return NOTOK; | |
237e0016 RS |
651 | } |
652 | ||
b1ce62a8 RS |
653 | while (1) |
654 | { | |
655 | switch (multiline (buf, sizeof buf, sfi)) | |
656 | { | |
237e0016 | 657 | case OK: |
b1ce62a8 RS |
658 | (*action)(buf, arg); |
659 | break; | |
237e0016 | 660 | case DONE: |
b1ce62a8 | 661 | return OK; |
237e0016 | 662 | case NOTOK: |
b1ce62a8 RS |
663 | strcpy (Errmsg, buf); |
664 | return NOTOK; | |
237e0016 RS |
665 | } |
666 | } | |
667 | } | |
668 | ||
b1ce62a8 RS |
669 | getline (buf, n, f) |
670 | char *buf; | |
671 | register int n; | |
672 | FILE *f; | |
237e0016 | 673 | { |
b1ce62a8 RS |
674 | register char *p; |
675 | int c; | |
237e0016 | 676 | |
b1ce62a8 RS |
677 | p = buf; |
678 | while (--n > 0 && (c = fgetc (f)) != EOF) | |
679 | if ((*p++ = c) == '\n') break; | |
237e0016 | 680 | |
b1ce62a8 RS |
681 | if (ferror (f)) |
682 | { | |
683 | strcpy (buf, "error on connection"); | |
684 | return NOTOK; | |
237e0016 RS |
685 | } |
686 | ||
b1ce62a8 RS |
687 | if (c == EOF && p == buf) |
688 | { | |
689 | strcpy (buf, "connection closed by foreign host"); | |
690 | return DONE; | |
237e0016 RS |
691 | } |
692 | ||
b1ce62a8 RS |
693 | *p = NULL; |
694 | if (*--p == '\n') *p = NULL; | |
695 | if (*--p == '\r') *p = NULL; | |
696 | return OK; | |
237e0016 RS |
697 | } |
698 | ||
b1ce62a8 RS |
699 | multiline (buf, n, f) |
700 | char *buf; | |
701 | register int n; | |
702 | FILE *f; | |
237e0016 | 703 | { |
cfa191ff RS |
704 | if (getline (buf, n, f) != OK) |
705 | return NOTOK; | |
b1ce62a8 RS |
706 | if (*buf == '.') |
707 | { | |
708 | if (*(buf+1) == NULL) | |
cfa191ff | 709 | return DONE; |
b1ce62a8 | 710 | else |
cfa191ff | 711 | strcpy (buf, buf+1); |
237e0016 | 712 | } |
b1ce62a8 | 713 | return OK; |
237e0016 RS |
714 | } |
715 | ||
716 | char * | |
b1ce62a8 | 717 | get_errmsg () |
237e0016 | 718 | { |
b1ce62a8 RS |
719 | extern int errno, sys_nerr; |
720 | extern char *sys_errlist[]; | |
721 | char *s; | |
722 | ||
723 | if (errno < sys_nerr) | |
724 | s = sys_errlist[errno]; | |
725 | else | |
726 | s = "unknown error"; | |
727 | return (s); | |
237e0016 RS |
728 | } |
729 | ||
b1ce62a8 RS |
730 | putline (buf, err, f) |
731 | char *buf; | |
732 | char *err; | |
733 | FILE *f; | |
237e0016 | 734 | { |
b1ce62a8 RS |
735 | fprintf (f, "%s\r\n", buf); |
736 | fflush (f); | |
737 | if (ferror (f)) | |
738 | { | |
739 | strcpy (err, "lost connection"); | |
740 | return NOTOK; | |
237e0016 | 741 | } |
b1ce62a8 | 742 | return OK; |
237e0016 RS |
743 | } |
744 | ||
b1ce62a8 RS |
745 | mbx_write (line, mbf) |
746 | char *line; | |
747 | FILE *mbf; | |
237e0016 | 748 | { |
b1ce62a8 RS |
749 | fputs (line, mbf); |
750 | fputc (0x0a, mbf); | |
237e0016 RS |
751 | } |
752 | ||
b1ce62a8 RS |
753 | mbx_delimit_begin (mbf) |
754 | FILE *mbf; | |
237e0016 | 755 | { |
70da2b86 | 756 | fputs ("\f\n0, unseen,,\n", mbf); |
237e0016 RS |
757 | } |
758 | ||
b1ce62a8 RS |
759 | mbx_delimit_end (mbf) |
760 | FILE *mbf; | |
237e0016 | 761 | { |
b1ce62a8 | 762 | putc ('\037', mbf); |
237e0016 RS |
763 | } |
764 | ||
765 | #endif /* MAIL_USE_POP */ |