]>
Commit | Line | Data |
---|---|---|
86e4d161 MS |
1 | /* |
2 | * Copyright (c) 2008 The DragonFly Project. All rights reserved. | |
3 | * | |
4 | * This code is derived from software contributed to The DragonFly Project | |
5 | * by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in | |
15 | * the documentation and/or other materials provided with the | |
16 | * distribution. | |
17 | * 3. Neither the name of The DragonFly Project nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific, prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
22 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
24 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
25 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
26 | * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
27 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
28 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
29 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
31 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
32 | * SUCH DAMAGE. | |
33 | * | |
c507d897 | 34 | * $DragonFly: src/libexec/dma/dma.c,v 1.5 2008/09/30 17:47:21 swildner Exp $ |
86e4d161 MS |
35 | */ |
36 | ||
37 | #include <sys/param.h> | |
38 | #include <sys/queue.h> | |
39 | #include <sys/stat.h> | |
40 | #include <sys/types.h> | |
c507d897 | 41 | #include <sys/wait.h> |
86e4d161 MS |
42 | |
43 | #ifdef HAVE_CRYPTO | |
44 | #include <openssl/ssl.h> | |
45 | #endif /* HAVE_CRYPTO */ | |
46 | ||
47 | #include <dirent.h> | |
48 | #include <err.h> | |
49 | #include <errno.h> | |
50 | #include <fcntl.h> | |
51 | #include <inttypes.h> | |
52 | #include <netdb.h> | |
53 | #include <paths.h> | |
54 | #include <pwd.h> | |
55 | #include <signal.h> | |
56 | #include <stdarg.h> | |
57 | #include <stdio.h> | |
58 | #include <stdlib.h> | |
59 | #include <string.h> | |
60 | #include <syslog.h> | |
61 | #include <unistd.h> | |
62 | ||
63 | #include "dma.h" | |
64 | ||
65 | ||
66 | ||
e0a95d28 | 67 | static void deliver(struct qitem *); |
86e4d161 MS |
68 | static int add_recp(struct queue *, const char *, const char *, int); |
69 | ||
70 | struct aliases aliases = LIST_HEAD_INITIALIZER(aliases); | |
71 | static struct strlist tmpfs = SLIST_HEAD_INITIALIZER(tmpfs); | |
72 | struct virtusers virtusers = LIST_HEAD_INITIALIZER(virtusers); | |
73 | struct authusers authusers = LIST_HEAD_INITIALIZER(authusers); | |
74 | static int daemonize = 1; | |
75 | struct config *config; | |
76 | ||
77 | char * | |
78 | hostname(void) | |
79 | { | |
80 | static char name[MAXHOSTNAMELEN+1]; | |
81 | ||
82 | if (gethostname(name, sizeof(name)) != 0) | |
83 | strcpy(name, "(unknown hostname)"); | |
84 | ||
85 | return name; | |
86 | } | |
87 | ||
88 | static char * | |
89 | set_from(const char *osender) | |
90 | { | |
91 | struct virtuser *v; | |
92 | char *sender; | |
93 | ||
94 | if ((config->features & VIRTUAL) != 0) { | |
95 | SLIST_FOREACH(v, &virtusers, next) { | |
96 | if (strcmp(v->login, getlogin()) == 0) { | |
97 | sender = strdup(v->address); | |
98 | if (sender == NULL) | |
99 | return(NULL); | |
100 | goto out; | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
105 | if (osender) { | |
106 | sender = strdup(osender); | |
107 | if (sender == NULL) | |
e0a95d28 | 108 | return (NULL); |
86e4d161 MS |
109 | } else { |
110 | if (asprintf(&sender, "%s@%s", getlogin(), hostname()) <= 0) | |
e0a95d28 | 111 | return (NULL); |
86e4d161 MS |
112 | } |
113 | ||
114 | if (strchr(sender, '\n') != NULL) { | |
115 | errno = EINVAL; | |
e0a95d28 | 116 | return (NULL); |
86e4d161 MS |
117 | } |
118 | ||
119 | out: | |
e0a95d28 | 120 | return (sender); |
86e4d161 MS |
121 | } |
122 | ||
123 | static int | |
124 | read_aliases(void) | |
125 | { | |
126 | yyin = fopen(config->aliases, "r"); | |
127 | if (yyin == NULL) | |
e0a95d28 | 128 | return (0); /* not fatal */ |
86e4d161 | 129 | if (yyparse()) |
e0a95d28 | 130 | return (-1); /* fatal error, probably malloc() */ |
86e4d161 | 131 | fclose(yyin); |
e0a95d28 | 132 | return (0); |
86e4d161 MS |
133 | } |
134 | ||
135 | static int | |
136 | add_recp(struct queue *queue, const char *str, const char *sender, int expand) | |
137 | { | |
138 | struct qitem *it, *tit; | |
139 | struct stritem *sit; | |
140 | struct alias *al; | |
141 | struct passwd *pw; | |
142 | char *host; | |
143 | int aliased = 0; | |
144 | ||
145 | it = calloc(1, sizeof(*it)); | |
146 | if (it == NULL) | |
e0a95d28 | 147 | return (-1); |
86e4d161 MS |
148 | it->addr = strdup(str); |
149 | if (it->addr == NULL) | |
e0a95d28 | 150 | return (-1); |
86e4d161 MS |
151 | |
152 | it->sender = sender; | |
153 | host = strrchr(it->addr, '@'); | |
154 | if (host != NULL && | |
155 | (strcmp(host + 1, hostname()) == 0 || | |
156 | strcmp(host + 1, "localhost") == 0)) { | |
157 | *host = 0; | |
158 | } | |
159 | LIST_FOREACH(tit, &queue->queue, next) { | |
160 | /* weed out duplicate dests */ | |
161 | if (strcmp(tit->addr, it->addr) == 0) { | |
162 | free(it->addr); | |
163 | free(it); | |
e0a95d28 | 164 | return (0); |
86e4d161 MS |
165 | } |
166 | } | |
167 | LIST_INSERT_HEAD(&queue->queue, it, next); | |
168 | if (strrchr(it->addr, '@') == NULL) { | |
e0a95d28 | 169 | it->remote = 0; |
86e4d161 MS |
170 | if (expand) { |
171 | LIST_FOREACH(al, &aliases, next) { | |
172 | if (strcmp(al->alias, it->addr) != 0) | |
173 | continue; | |
174 | SLIST_FOREACH(sit, &al->dests, next) { | |
e0a95d28 MS |
175 | if (add_recp(queue, sit->str, sender, 1) != 0) |
176 | return (-1); | |
86e4d161 MS |
177 | } |
178 | aliased = 1; | |
179 | } | |
180 | if (aliased) { | |
181 | LIST_REMOVE(it, next); | |
182 | } else { | |
e0a95d28 | 183 | /* Local destination, check */ |
86e4d161 MS |
184 | pw = getpwnam(it->addr); |
185 | if (pw == NULL) | |
186 | goto out; | |
e0a95d28 | 187 | endpwent(); |
86e4d161 MS |
188 | } |
189 | } | |
190 | } else { | |
e0a95d28 | 191 | it->remote = 1; |
86e4d161 MS |
192 | } |
193 | ||
e0a95d28 | 194 | return (0); |
86e4d161 MS |
195 | |
196 | out: | |
197 | free(it->addr); | |
198 | free(it); | |
e0a95d28 | 199 | return (-1); |
86e4d161 MS |
200 | } |
201 | ||
202 | static void | |
203 | deltmp(void) | |
204 | { | |
205 | struct stritem *t; | |
206 | ||
207 | SLIST_FOREACH(t, &tmpfs, next) { | |
208 | unlink(t->str); | |
209 | } | |
210 | } | |
211 | ||
212 | static int | |
213 | gentempf(struct queue *queue) | |
214 | { | |
215 | char fn[PATH_MAX+1]; | |
216 | struct stritem *t; | |
217 | int fd; | |
218 | ||
219 | if (snprintf(fn, sizeof(fn), "%s/%s", config->spooldir, "tmp_XXXXXXXXXX") <= 0) | |
e0a95d28 | 220 | return (-1); |
86e4d161 MS |
221 | fd = mkstemp(fn); |
222 | if (fd < 0) | |
e0a95d28 | 223 | return (-1); |
86e4d161 MS |
224 | queue->mailfd = fd; |
225 | queue->tmpf = strdup(fn); | |
226 | if (queue->tmpf == NULL) { | |
227 | unlink(fn); | |
e0a95d28 | 228 | return (-1); |
86e4d161 MS |
229 | } |
230 | t = malloc(sizeof(*t)); | |
231 | if (t != NULL) { | |
232 | t->str = queue->tmpf; | |
233 | SLIST_INSERT_HEAD(&tmpfs, t, next); | |
234 | } | |
e0a95d28 | 235 | return (0); |
86e4d161 MS |
236 | } |
237 | ||
238 | /* | |
239 | * spool file format: | |
240 | * | |
241 | * envelope-from | |
242 | * queue-id1 envelope-to1 | |
243 | * queue-id2 envelope-to2 | |
244 | * ... | |
245 | * <empty line> | |
246 | * mail data | |
247 | * | |
248 | * queue ids are unique, formed from the inode of the spool file | |
249 | * and a unique identifier. | |
250 | */ | |
251 | static int | |
252 | preparespool(struct queue *queue, const char *sender) | |
253 | { | |
254 | char line[1000]; /* by RFC2822 */ | |
255 | struct stat st; | |
256 | int error; | |
257 | struct qitem *it; | |
258 | FILE *queuef; | |
259 | off_t hdrlen; | |
260 | ||
261 | error = snprintf(line, sizeof(line), "%s\n", sender); | |
262 | if (error < 0 || (size_t)error >= sizeof(line)) { | |
263 | errno = E2BIG; | |
e0a95d28 | 264 | return (-1); |
86e4d161 MS |
265 | } |
266 | if (write(queue->mailfd, line, error) != error) | |
e0a95d28 | 267 | return (-1); |
86e4d161 MS |
268 | |
269 | queuef = fdopen(queue->mailfd, "r+"); | |
270 | if (queuef == NULL) | |
e0a95d28 | 271 | return (-1); |
86e4d161 MS |
272 | |
273 | /* | |
274 | * Assign queue id to each dest. | |
275 | */ | |
276 | if (fstat(queue->mailfd, &st) != 0) | |
e0a95d28 | 277 | return (-1); |
86e4d161 MS |
278 | queue->id = st.st_ino; |
279 | LIST_FOREACH(it, &queue->queue, next) { | |
280 | if (asprintf(&it->queueid, "%"PRIxMAX".%"PRIxPTR, | |
281 | queue->id, (uintptr_t)it) <= 0) | |
e0a95d28 | 282 | return (-1); |
86e4d161 MS |
283 | if (asprintf(&it->queuefn, "%s/%s", |
284 | config->spooldir, it->queueid) <= 0) | |
e0a95d28 MS |
285 | return (-1); |
286 | /* File may not exist yet */ | |
287 | if (stat(it->queuefn, &st) == 0) | |
288 | return (-1); | |
86e4d161 MS |
289 | it->queuef = queuef; |
290 | error = snprintf(line, sizeof(line), "%s %s\n", | |
291 | it->queueid, it->addr); | |
292 | if (error < 0 || (size_t)error >= sizeof(line)) | |
e0a95d28 | 293 | return (-1); |
86e4d161 | 294 | if (write(queue->mailfd, line, error) != error) |
e0a95d28 | 295 | return (-1); |
86e4d161 MS |
296 | } |
297 | line[0] = '\n'; | |
298 | if (write(queue->mailfd, line, 1) != 1) | |
e0a95d28 | 299 | return (-1); |
86e4d161 MS |
300 | |
301 | hdrlen = lseek(queue->mailfd, 0, SEEK_CUR); | |
302 | LIST_FOREACH(it, &queue->queue, next) { | |
303 | it->hdrlen = hdrlen; | |
304 | } | |
e0a95d28 | 305 | return (0); |
86e4d161 MS |
306 | } |
307 | ||
308 | static char * | |
309 | rfc822date(void) | |
310 | { | |
311 | static char str[50]; | |
312 | size_t error; | |
313 | time_t now; | |
314 | ||
315 | now = time(NULL); | |
316 | error = strftime(str, sizeof(str), "%a, %d %b %Y %T %z", | |
317 | localtime(&now)); | |
318 | if (error == 0) | |
319 | strcpy(str, "(date fail)"); | |
e0a95d28 | 320 | return (str); |
86e4d161 MS |
321 | } |
322 | ||
323 | static int | |
324 | readmail(struct queue *queue, const char *sender, int nodot) | |
325 | { | |
326 | char line[1000]; /* by RFC2822 */ | |
327 | size_t linelen; | |
328 | int error; | |
329 | ||
330 | error = snprintf(line, sizeof(line), "\ | |
331 | Received: from %s (uid %d)\n\ | |
332 | \t(envelope-from %s)\n\ | |
333 | \tid %"PRIxMAX"\n\ | |
334 | \tby %s (%s)\n\ | |
335 | \t%s\n", | |
336 | getlogin(), getuid(), | |
337 | sender, | |
338 | queue->id, | |
339 | hostname(), VERSION, | |
340 | rfc822date()); | |
341 | if (error < 0 || (size_t)error >= sizeof(line)) | |
e0a95d28 | 342 | return (-1); |
86e4d161 | 343 | if (write(queue->mailfd, line, error) != error) |
e0a95d28 | 344 | return (-1); |
86e4d161 MS |
345 | |
346 | while (!feof(stdin)) { | |
347 | if (fgets(line, sizeof(line), stdin) == NULL) | |
348 | break; | |
349 | linelen = strlen(line); | |
350 | if (linelen == 0 || line[linelen - 1] != '\n') { | |
351 | errno = EINVAL; /* XXX mark permanent errors */ | |
e0a95d28 | 352 | return (-1); |
86e4d161 MS |
353 | } |
354 | if (!nodot && linelen == 2 && line[0] == '.') | |
355 | break; | |
356 | if ((size_t)write(queue->mailfd, line, linelen) != linelen) | |
e0a95d28 | 357 | return (-1); |
86e4d161 MS |
358 | } |
359 | if (fsync(queue->mailfd) != 0) | |
e0a95d28 MS |
360 | return (-1); |
361 | return (0); | |
86e4d161 MS |
362 | } |
363 | ||
364 | static int | |
365 | linkspool(struct queue *queue) | |
366 | { | |
367 | struct qitem *it; | |
368 | ||
369 | LIST_FOREACH(it, &queue->queue, next) { | |
370 | if (link(queue->tmpf, it->queuefn) != 0) | |
371 | goto delfiles; | |
372 | } | |
e0a95d28 MS |
373 | unlink(queue->tmpf); |
374 | return (0); | |
86e4d161 MS |
375 | |
376 | delfiles: | |
377 | LIST_FOREACH(it, &queue->queue, next) { | |
378 | unlink(it->queuefn); | |
379 | } | |
e0a95d28 | 380 | return (-1); |
86e4d161 MS |
381 | } |
382 | ||
e0a95d28 MS |
383 | static struct qitem * |
384 | go_background(struct queue *queue) | |
86e4d161 MS |
385 | { |
386 | struct sigaction sa; | |
387 | struct qitem *it; | |
388 | pid_t pid; | |
389 | ||
390 | if (daemonize && daemon(0, 0) != 0) { | |
e0a95d28 | 391 | syslog(LOG_ERR, "can not daemonize: %m"); |
86e4d161 MS |
392 | exit(1); |
393 | } | |
394 | daemonize = 0; | |
e0a95d28 | 395 | |
86e4d161 MS |
396 | bzero(&sa, sizeof(sa)); |
397 | sa.sa_flags = SA_NOCLDWAIT; | |
398 | sa.sa_handler = SIG_IGN; | |
399 | sigaction(SIGCHLD, &sa, NULL); | |
400 | ||
94389971 | 401 | LIST_FOREACH(it, &queue->queue, next) { |
e0a95d28 MS |
402 | /* No need to fork for the last dest */ |
403 | if (LIST_NEXT(it, next) == NULL) | |
404 | return (it); | |
405 | ||
86e4d161 MS |
406 | pid = fork(); |
407 | switch (pid) { | |
408 | case -1: | |
409 | syslog(LOG_ERR, "can not fork: %m"); | |
410 | exit(1); | |
411 | break; | |
412 | ||
413 | case 0: | |
414 | /* | |
415 | * Child: | |
416 | * | |
417 | * return and deliver mail | |
418 | */ | |
e0a95d28 | 419 | return (it); |
86e4d161 MS |
420 | |
421 | default: | |
422 | /* | |
423 | * Parent: | |
424 | * | |
425 | * fork next child | |
426 | */ | |
427 | break; | |
428 | } | |
429 | } | |
430 | ||
431 | syslog(LOG_CRIT, "reached dead code"); | |
432 | exit(1); | |
433 | } | |
434 | ||
435 | static void | |
e0a95d28 | 436 | bounce(struct qitem *it, const char *reason) |
86e4d161 MS |
437 | { |
438 | struct queue bounceq; | |
439 | struct qitem *bit; | |
440 | char line[1000]; | |
441 | int error; | |
442 | ||
443 | /* Don't bounce bounced mails */ | |
444 | if (it->sender[0] == 0) { | |
445 | syslog(LOG_CRIT, "%s: delivery panic: can't bounce a bounce", | |
e0a95d28 | 446 | it->queueid); |
86e4d161 MS |
447 | exit(1); |
448 | } | |
449 | ||
450 | syslog(LOG_ERR, "%s: delivery failed, bouncing", | |
451 | it->queueid); | |
452 | ||
453 | LIST_INIT(&bounceq.queue); | |
454 | if (add_recp(&bounceq, it->sender, "", 1) != 0) | |
455 | goto fail; | |
456 | if (gentempf(&bounceq) != 0) | |
457 | goto fail; | |
458 | if (preparespool(&bounceq, "") != 0) | |
459 | goto fail; | |
460 | ||
461 | bit = LIST_FIRST(&bounceq.queue); | |
462 | error = fprintf(bit->queuef, "\ | |
463 | Received: from MAILER-DAEMON\n\ | |
464 | \tid %"PRIxMAX"\n\ | |
465 | \tby %s (%s)\n\ | |
466 | \t%s\n\ | |
467 | X-Original-To: <%s>\n\ | |
468 | From: MAILER-DAEMON <>\n\ | |
469 | To: %s\n\ | |
470 | Subject: Mail delivery failed\n\ | |
471 | Message-Id: <%"PRIxMAX"@%s>\n\ | |
472 | Date: %s\n\ | |
473 | \n\ | |
474 | This is the %s at %s.\n\ | |
475 | \n\ | |
476 | There was an error delivering your mail to <%s>.\n\ | |
477 | \n\ | |
478 | %s\n\ | |
479 | \n\ | |
480 | Message headers follow.\n\ | |
481 | \n\ | |
482 | ", | |
483 | bounceq.id, | |
484 | hostname(), VERSION, | |
485 | rfc822date(), | |
486 | it->addr, | |
487 | it->sender, | |
488 | bounceq.id, hostname(), | |
489 | rfc822date(), | |
490 | VERSION, hostname(), | |
491 | it->addr, | |
492 | reason); | |
493 | if (error < 0) | |
494 | goto fail; | |
495 | if (fflush(bit->queuef) != 0) | |
496 | goto fail; | |
497 | ||
498 | if (fseek(it->queuef, it->hdrlen, SEEK_SET) != 0) | |
499 | goto fail; | |
500 | while (!feof(it->queuef)) { | |
501 | if (fgets(line, sizeof(line), it->queuef) == NULL) | |
502 | break; | |
503 | if (line[0] == '\n') | |
504 | break; | |
505 | write(bounceq.mailfd, line, strlen(line)); | |
506 | } | |
507 | if (fsync(bounceq.mailfd) != 0) | |
508 | goto fail; | |
509 | if (linkspool(&bounceq) != 0) | |
510 | goto fail; | |
511 | /* bounce is safe */ | |
512 | ||
513 | unlink(it->queuefn); | |
514 | fclose(it->queuef); | |
515 | ||
e0a95d28 MS |
516 | bit = go_background(&bounceq); |
517 | deliver(bit); | |
86e4d161 MS |
518 | /* NOTREACHED */ |
519 | ||
520 | fail: | |
521 | syslog(LOG_CRIT, "%s: error creating bounce: %m", it->queueid); | |
522 | unlink(it->queuefn); | |
523 | exit(1); | |
524 | } | |
525 | ||
526 | static int | |
527 | deliver_local(struct qitem *it, const char **errmsg) | |
528 | { | |
94389971 | 529 | char fn[PATH_MAX+1]; |
e0a95d28 MS |
530 | char line[1000]; |
531 | size_t linelen; | |
532 | int mbox; | |
533 | int error; | |
534 | off_t mboxlen; | |
86e4d161 | 535 | time_t now = time(NULL); |
94389971 | 536 | |
e0a95d28 MS |
537 | error = snprintf(fn, sizeof(fn), "%s/%s", _PATH_MAILDIR, it->addr); |
538 | if (error < 0 || (size_t)error >= sizeof(fn)) { | |
539 | syslog(LOG_ERR, "%s: local delivery deferred: %m", | |
540 | it->queueid); | |
541 | return (1); | |
86e4d161 MS |
542 | } |
543 | ||
e0a95d28 MS |
544 | /* mailx removes users mailspool file if empty, so open with O_CREAT */ |
545 | mbox = open(fn, O_WRONLY | O_EXLOCK | O_APPEND | O_CREAT); | |
546 | if (mbox < 0) { | |
547 | syslog(LOG_ERR, "%s: local delivery deferred: can not open `%s': %m", | |
548 | it->queueid, fn); | |
549 | return (1); | |
86e4d161 | 550 | } |
e0a95d28 | 551 | mboxlen = lseek(mbox, 0, SEEK_CUR); |
86e4d161 MS |
552 | |
553 | if (fseek(it->queuef, it->hdrlen, SEEK_SET) != 0) { | |
554 | syslog(LOG_ERR, "%s: local delivery deferred: can not seek: %m", | |
555 | it->queueid); | |
e0a95d28 | 556 | return (1); |
86e4d161 MS |
557 | } |
558 | ||
e0a95d28 MS |
559 | error = snprintf(line, sizeof(line), "From %s\t%s", it->sender, ctime(&now)); |
560 | if (error < 0 || (size_t)error >= sizeof(line)) { | |
86e4d161 MS |
561 | syslog(LOG_ERR, "%s: local delivery deferred: can not write header: %m", |
562 | it->queueid); | |
e0a95d28 | 563 | return (1); |
86e4d161 | 564 | } |
e0a95d28 | 565 | if (write(mbox, line, error) != error) |
86e4d161 MS |
566 | goto wrerror; |
567 | ||
568 | while (!feof(it->queuef)) { | |
569 | if (fgets(line, sizeof(line), it->queuef) == NULL) | |
570 | break; | |
571 | linelen = strlen(line); | |
572 | if (linelen == 0 || line[linelen - 1] != '\n') { | |
e0a95d28 MS |
573 | syslog(LOG_CRIT, "%s: local delivery failed: corrupted queue file", |
574 | it->queueid); | |
86e4d161 | 575 | *errmsg = "corrupted queue file"; |
e0a95d28 | 576 | error = -1; |
86e4d161 MS |
577 | goto chop; |
578 | } | |
579 | ||
580 | if (strncmp(line, "From ", 5) == 0) { | |
581 | const char *gt = ">"; | |
582 | ||
e0a95d28 | 583 | if (write(mbox, gt, 1) != 1) |
86e4d161 MS |
584 | goto wrerror; |
585 | } | |
e0a95d28 | 586 | if ((size_t)write(mbox, line, linelen) != linelen) |
86e4d161 MS |
587 | goto wrerror; |
588 | } | |
589 | line[0] = '\n'; | |
e0a95d28 | 590 | if (write(mbox, line, 1) != 1) |
94389971 | 591 | goto wrerror; |
e0a95d28 MS |
592 | close(mbox); |
593 | return (0); | |
86e4d161 MS |
594 | |
595 | wrerror: | |
596 | syslog(LOG_ERR, "%s: local delivery failed: write error: %m", | |
597 | it->queueid); | |
e0a95d28 | 598 | error = 1; |
86e4d161 | 599 | chop: |
e0a95d28 | 600 | if (ftruncate(mbox, mboxlen) != 0) |
86e4d161 | 601 | syslog(LOG_WARNING, "%s: error recovering mbox `%s': %m", |
e0a95d28 MS |
602 | it->queueid, fn); |
603 | close(mbox); | |
604 | return (error); | |
86e4d161 MS |
605 | } |
606 | ||
607 | static void | |
e0a95d28 | 608 | deliver(struct qitem *it) |
86e4d161 MS |
609 | { |
610 | int error; | |
611 | unsigned int backoff = MIN_RETRY; | |
612 | const char *errmsg = "unknown bounce reason"; | |
613 | struct timeval now; | |
614 | struct stat st; | |
615 | ||
e0a95d28 MS |
616 | syslog(LOG_INFO, "%s: mail from=<%s> to=<%s>", |
617 | it->queueid, it->sender, it->addr); | |
86e4d161 MS |
618 | |
619 | retry: | |
620 | syslog(LOG_INFO, "%s: trying delivery", | |
621 | it->queueid); | |
622 | ||
e0a95d28 MS |
623 | if (it->remote) |
624 | error = deliver_remote(it, &errmsg); | |
625 | else | |
86e4d161 MS |
626 | error = deliver_local(it, &errmsg); |
627 | ||
628 | switch (error) { | |
629 | case 0: | |
e0a95d28 | 630 | unlink(it->queuefn); |
86e4d161 MS |
631 | syslog(LOG_INFO, "%s: delivery successful", |
632 | it->queueid); | |
633 | exit(0); | |
634 | ||
635 | case 1: | |
636 | if (stat(it->queuefn, &st) != 0) { | |
637 | syslog(LOG_ERR, "%s: lost queue file `%s'", | |
638 | it->queueid, it->queuefn); | |
639 | exit(1); | |
640 | } | |
641 | if (gettimeofday(&now, NULL) == 0 && | |
642 | (now.tv_sec - st.st_mtimespec.tv_sec > MAX_TIMEOUT)) { | |
643 | char *msg; | |
644 | ||
645 | if (asprintf(&msg, | |
e0a95d28 MS |
646 | "Could not deliver for the last %d seconds. Giving up.", |
647 | MAX_TIMEOUT) > 0) | |
86e4d161 MS |
648 | errmsg = msg; |
649 | goto bounce; | |
650 | } | |
651 | sleep(backoff); | |
652 | backoff *= 2; | |
653 | if (backoff > MAX_RETRY) | |
654 | backoff = MAX_RETRY; | |
655 | goto retry; | |
656 | ||
657 | case -1: | |
658 | default: | |
659 | break; | |
660 | } | |
661 | ||
662 | bounce: | |
e0a95d28 | 663 | bounce(it, errmsg); |
86e4d161 MS |
664 | /* NOTREACHED */ |
665 | } | |
666 | ||
667 | static void | |
668 | load_queue(struct queue *queue) | |
669 | { | |
670 | struct stat st; | |
671 | struct qitem *it; | |
672 | //struct queue queue, itmqueue; | |
673 | struct queue itmqueue; | |
674 | DIR *spooldir; | |
675 | struct dirent *de; | |
676 | char line[1000]; | |
677 | char *fn; | |
678 | FILE *queuef; | |
679 | char *sender; | |
680 | char *addr; | |
681 | char *queueid; | |
682 | char *queuefn; | |
683 | off_t hdrlen; | |
684 | int fd; | |
685 | ||
686 | LIST_INIT(&queue->queue); | |
687 | ||
688 | spooldir = opendir(config->spooldir); | |
689 | if (spooldir == NULL) | |
690 | err(1, "reading queue"); | |
691 | ||
692 | while ((de = readdir(spooldir)) != NULL) { | |
693 | sender = NULL; | |
694 | queuef = NULL; | |
695 | queueid = NULL; | |
696 | queuefn = NULL; | |
697 | fn = NULL; | |
698 | LIST_INIT(&itmqueue.queue); | |
699 | ||
700 | /* ignore temp files */ | |
701 | if (strncmp(de->d_name, "tmp_", 4) == 0 || | |
702 | de->d_type != DT_REG) | |
703 | continue; | |
704 | if (asprintf(&queuefn, "%s/%s", config->spooldir, de->d_name) < 0) | |
705 | goto fail; | |
706 | fd = open(queuefn, O_RDONLY|O_EXLOCK|O_NONBLOCK); | |
707 | if (fd < 0) { | |
708 | /* Ignore locked files */ | |
709 | if (errno == EWOULDBLOCK) | |
710 | continue; | |
711 | goto skip_item; | |
712 | } | |
713 | ||
714 | queuef = fdopen(fd, "r"); | |
715 | if (queuef == NULL) | |
716 | goto skip_item; | |
717 | if (fgets(line, sizeof(line), queuef) == NULL || | |
718 | line[0] == 0) | |
719 | goto skip_item; | |
720 | line[strlen(line) - 1] = 0; /* chop newline */ | |
721 | sender = strdup(line); | |
722 | if (sender == NULL) | |
723 | goto skip_item; | |
724 | ||
725 | for (;;) { | |
726 | if (fgets(line, sizeof(line), queuef) == NULL || | |
727 | line[0] == 0) | |
728 | goto skip_item; | |
729 | if (line[0] == '\n') | |
730 | break; | |
731 | line[strlen(line) - 1] = 0; | |
732 | queueid = strdup(line); | |
733 | if (queueid == NULL) | |
734 | goto skip_item; | |
735 | addr = strchr(queueid, ' '); | |
736 | if (addr == NULL) | |
737 | goto skip_item; | |
738 | *addr++ = 0; | |
739 | if (fn != NULL) | |
740 | free(fn); | |
741 | if (asprintf(&fn, "%s/%s", config->spooldir, queueid) < 0) | |
742 | goto skip_item; | |
743 | /* Item has already been delivered? */ | |
744 | if (stat(fn, &st) != 0) | |
745 | continue; | |
746 | if (add_recp(&itmqueue, addr, sender, 0) != 0) | |
747 | goto skip_item; | |
748 | it = LIST_FIRST(&itmqueue.queue); | |
749 | it->queuef = queuef; | |
750 | it->queueid = queueid; | |
751 | it->queuefn = fn; | |
752 | fn = NULL; | |
753 | } | |
754 | if (LIST_EMPTY(&itmqueue.queue)) { | |
755 | warnx("queue file without items: `%s'", queuefn); | |
756 | goto skip_item2; | |
757 | } | |
758 | hdrlen = ftell(queuef); | |
759 | while ((it = LIST_FIRST(&itmqueue.queue)) != NULL) { | |
760 | it->hdrlen = hdrlen; | |
761 | LIST_REMOVE(it, next); | |
762 | LIST_INSERT_HEAD(&queue->queue, it, next); | |
763 | } | |
764 | continue; | |
765 | ||
766 | skip_item: | |
767 | warn("reading queue: `%s'", queuefn); | |
768 | skip_item2: | |
769 | if (sender != NULL) | |
770 | free(sender); | |
771 | if (queuefn != NULL) | |
772 | free(queuefn); | |
773 | if (fn != NULL) | |
774 | free(fn); | |
775 | if (queueid != NULL) | |
776 | free(queueid); | |
777 | close(fd); | |
778 | } | |
779 | closedir(spooldir); | |
780 | return; | |
781 | ||
782 | fail: | |
783 | err(1, "reading queue"); | |
784 | } | |
785 | ||
786 | static void | |
787 | run_queue(struct queue *queue) | |
788 | { | |
e0a95d28 MS |
789 | struct qitem *it; |
790 | ||
86e4d161 MS |
791 | if (LIST_EMPTY(&queue->queue)) |
792 | return; | |
793 | ||
e0a95d28 MS |
794 | it = go_background(queue); |
795 | deliver(it); | |
86e4d161 MS |
796 | /* NOTREACHED */ |
797 | } | |
798 | ||
799 | static void | |
800 | show_queue(struct queue *queue) | |
801 | { | |
802 | struct qitem *it; | |
803 | ||
804 | if (LIST_EMPTY(&queue->queue)) { | |
805 | printf("Mail queue is empty\n"); | |
806 | return; | |
807 | } | |
808 | ||
809 | LIST_FOREACH(it, &queue->queue, next) { | |
810 | printf("\ | |
811 | ID\t: %s\n\ | |
812 | From\t: %s\n\ | |
813 | To\t: %s\n--\n", it->queueid, it->sender, it->addr); | |
814 | } | |
815 | } | |
816 | ||
817 | /* | |
818 | * TODO: | |
819 | * | |
820 | * - alias processing | |
821 | * - use group permissions | |
822 | * - proper sysexit codes | |
823 | */ | |
824 | ||
e0a95d28 MS |
825 | int |
826 | main(int argc, char **argv) | |
86e4d161 MS |
827 | { |
828 | char *sender = NULL; | |
829 | char tag[255]; | |
e0a95d28 | 830 | struct qitem *it; |
86e4d161 MS |
831 | struct queue queue; |
832 | struct queue lqueue; | |
86e4d161 MS |
833 | int i, ch; |
834 | int nodot = 0, doqueue = 0, showq = 0; | |
835 | ||
836 | atexit(deltmp); | |
837 | LIST_INIT(&queue.queue); | |
838 | snprintf(tag, 254, "dma"); | |
839 | ||
87fa1cc5 MS |
840 | opterr = 0; |
841 | while ((ch = getopt(argc, argv, "A:b:Df:iL:o:O:q:r:")) != -1) { | |
86e4d161 MS |
842 | switch (ch) { |
843 | case 'A': | |
844 | /* -AX is being ignored, except for -A{c,m} */ | |
845 | if (optarg[0] == 'c' || optarg[0] == 'm') { | |
846 | break; | |
847 | } | |
848 | /* else FALLTRHOUGH */ | |
849 | case 'b': | |
850 | /* -bX is being ignored, except for -bp */ | |
851 | if (optarg[0] == 'p') { | |
852 | showq = 1; | |
853 | break; | |
854 | } | |
855 | /* else FALLTRHOUGH */ | |
856 | case 'D': | |
857 | daemonize = 0; | |
858 | break; | |
859 | case 'L': | |
860 | if (optarg != NULL) | |
861 | snprintf(tag, 254, "%s", optarg); | |
862 | break; | |
863 | case 'f': | |
864 | case 'r': | |
865 | sender = optarg; | |
866 | break; | |
867 | ||
868 | case 'o': | |
869 | /* -oX is being ignored, except for -oi */ | |
870 | if (optarg[0] != 'i') | |
871 | break; | |
872 | /* else FALLTRHOUGH */ | |
87fa1cc5 MS |
873 | case 'O': |
874 | break; | |
86e4d161 MS |
875 | case 'i': |
876 | nodot = 1; | |
877 | break; | |
878 | ||
879 | case 'q': | |
880 | doqueue = 1; | |
881 | break; | |
882 | ||
883 | default: | |
884 | exit(1); | |
885 | } | |
886 | } | |
887 | argc -= optind; | |
888 | argv += optind; | |
87fa1cc5 | 889 | opterr = 1; |
86e4d161 MS |
890 | |
891 | openlog(tag, LOG_PID | LOG_PERROR, LOG_MAIL); | |
892 | ||
893 | config = malloc(sizeof(struct config)); | |
894 | if (config == NULL) | |
895 | errx(1, "Cannot allocate enough memory"); | |
896 | ||
897 | memset(config, 0, sizeof(struct config)); | |
012adf14 | 898 | if (parse_conf(CONF_PATH, config) < 0) { |
86e4d161 MS |
899 | free(config); |
900 | errx(1, "reading config file"); | |
901 | } | |
902 | ||
903 | if (config->features & VIRTUAL) | |
e0a95d28 | 904 | if (parse_virtuser(config->virtualpath) < 0) |
86e4d161 MS |
905 | errx(1, "error reading virtual user file: %s", |
906 | config->virtualpath); | |
907 | ||
e0a95d28 | 908 | if (parse_authfile(config->authpath) < 0) |
86e4d161 MS |
909 | err(1, "reading SMTP authentication file"); |
910 | ||
911 | if (showq) { | |
912 | if (argc != 0) | |
913 | errx(1, "sending mail and displaying queue is" | |
914 | " mutually exclusive"); | |
915 | load_queue(&lqueue); | |
916 | show_queue(&lqueue); | |
e0a95d28 | 917 | return (0); |
86e4d161 MS |
918 | } |
919 | ||
920 | if (doqueue) { | |
921 | if (argc != 0) | |
922 | errx(1, "sending mail and queue pickup is mutually exclusive"); | |
923 | load_queue(&lqueue); | |
924 | run_queue(&lqueue); | |
e0a95d28 | 925 | return (0); |
86e4d161 MS |
926 | } |
927 | ||
e0a95d28 | 928 | if (read_aliases() != 0) |
86e4d161 MS |
929 | err(1, "reading aliases"); |
930 | ||
e0a95d28 | 931 | if ((sender = set_from(sender)) == NULL) |
86e4d161 MS |
932 | err(1, "setting from address"); |
933 | ||
934 | for (i = 0; i < argc; i++) { | |
e0a95d28 | 935 | if (add_recp(&queue, argv[i], sender, 1) != 0) |
86e4d161 MS |
936 | errx(1, "invalid recipient `%s'\n", argv[i]); |
937 | } | |
938 | ||
e0a95d28 | 939 | if (LIST_EMPTY(&queue.queue)) |
86e4d161 MS |
940 | errx(1, "no recipients"); |
941 | ||
e0a95d28 MS |
942 | if (gentempf(&queue) != 0) |
943 | err(1, "create temp file"); | |
944 | ||
945 | if (preparespool(&queue, sender) != 0) | |
86e4d161 MS |
946 | err(1, "creating spools (1)"); |
947 | ||
e0a95d28 | 948 | if (readmail(&queue, sender, nodot) != 0) |
86e4d161 MS |
949 | err(1, "reading mail"); |
950 | ||
e0a95d28 | 951 | if (linkspool(&queue) != 0) |
86e4d161 MS |
952 | err(1, "creating spools (2)"); |
953 | ||
954 | /* From here on the mail is safe. */ | |
955 | ||
956 | if (config->features & DEFER) | |
e0a95d28 | 957 | return (0); |
86e4d161 | 958 | |
e0a95d28 MS |
959 | it = go_background(&queue); |
960 | deliver(it); | |
86e4d161 MS |
961 | |
962 | /* NOTREACHED */ | |
e0a95d28 | 963 | return (0); |
94389971 | 964 | } |