Commit | Line | Data |
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059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
80fea873 | 5 | /* Copyright (c) University of Cambridge 1995 - 2016 */ |
059ec3d9 PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | /* The main code for delivering a message. */ | |
9 | ||
10 | ||
11 | #include "exim.h" | |
dadff1d4 | 12 | #include <assert.h> |
059ec3d9 PH |
13 | |
14 | ||
15 | /* Data block for keeping track of subprocesses for parallel remote | |
16 | delivery. */ | |
17 | ||
18 | typedef struct pardata { | |
19 | address_item *addrlist; /* chain of addresses */ | |
20 | address_item *addr; /* next address data expected for */ | |
21 | pid_t pid; /* subprocess pid */ | |
22 | int fd; /* pipe fd for getting result from subprocess */ | |
23 | int transport_count; /* returned transport count value */ | |
24 | BOOL done; /* no more data needed */ | |
25 | uschar *msg; /* error message */ | |
26 | uschar *return_path; /* return_path for these addresses */ | |
27 | } pardata; | |
28 | ||
29 | /* Values for the process_recipients variable */ | |
30 | ||
31 | enum { RECIP_ACCEPT, RECIP_IGNORE, RECIP_DEFER, | |
32 | RECIP_FAIL, RECIP_FAIL_FILTER, RECIP_FAIL_TIMEOUT, | |
33 | RECIP_FAIL_LOOP}; | |
34 | ||
35 | /* Mutually recursive functions for marking addresses done. */ | |
36 | ||
37 | static void child_done(address_item *, uschar *); | |
38 | static void address_done(address_item *, uschar *); | |
39 | ||
40 | /* Table for turning base-62 numbers into binary */ | |
41 | ||
42 | static uschar tab62[] = | |
43 | {0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, /* 0-9 */ | |
44 | 0,10,11,12,13,14,15,16,17,18,19,20, /* A-K */ | |
45 | 21,22,23,24,25,26,27,28,29,30,31,32, /* L-W */ | |
46 | 33,34,35, 0, 0, 0, 0, 0, /* X-Z */ | |
47 | 0,36,37,38,39,40,41,42,43,44,45,46, /* a-k */ | |
48 | 47,48,49,50,51,52,53,54,55,56,57,58, /* l-w */ | |
49 | 59,60,61}; /* x-z */ | |
50 | ||
51 | ||
52 | /************************************************* | |
53 | * Local static variables * | |
54 | *************************************************/ | |
55 | ||
56 | /* addr_duplicate is global because it needs to be seen from the Envelope-To | |
57 | writing code. */ | |
58 | ||
59 | static address_item *addr_defer = NULL; | |
60 | static address_item *addr_failed = NULL; | |
61 | static address_item *addr_fallback = NULL; | |
62 | static address_item *addr_local = NULL; | |
63 | static address_item *addr_new = NULL; | |
64 | static address_item *addr_remote = NULL; | |
65 | static address_item *addr_route = NULL; | |
66 | static address_item *addr_succeed = NULL; | |
6c1c3d1d WB |
67 | static address_item *addr_dsntmp = NULL; |
68 | static address_item *addr_senddsn = NULL; | |
059ec3d9 PH |
69 | |
70 | static FILE *message_log = NULL; | |
71 | static BOOL update_spool; | |
72 | static BOOL remove_journal; | |
73 | static int parcount = 0; | |
74 | static pardata *parlist = NULL; | |
75 | static int return_count; | |
76 | static uschar *frozen_info = US""; | |
77 | static uschar *used_return_path = NULL; | |
78 | ||
79 | static uschar spoolname[PATH_MAX]; | |
80 | ||
81 | ||
82 | ||
83 | /************************************************* | |
84 | * Make a new address item * | |
85 | *************************************************/ | |
86 | ||
87 | /* This function gets the store and initializes with default values. The | |
88 | transport_return value defaults to DEFER, so that any unexpected failure to | |
89 | deliver does not wipe out the message. The default unique string is set to a | |
90 | copy of the address, so that its domain can be lowercased. | |
91 | ||
92 | Argument: | |
93 | address the RFC822 address string | |
94 | copy force a copy of the address | |
95 | ||
96 | Returns: a pointer to an initialized address_item | |
97 | */ | |
98 | ||
99 | address_item * | |
100 | deliver_make_addr(uschar *address, BOOL copy) | |
101 | { | |
102 | address_item *addr = store_get(sizeof(address_item)); | |
103 | *addr = address_defaults; | |
104 | if (copy) address = string_copy(address); | |
105 | addr->address = address; | |
106 | addr->unique = string_copy(address); | |
107 | return addr; | |
108 | } | |
109 | ||
110 | ||
111 | ||
112 | ||
113 | /************************************************* | |
114 | * Set expansion values for an address * | |
115 | *************************************************/ | |
116 | ||
117 | /* Certain expansion variables are valid only when handling an address or | |
118 | address list. This function sets them up or clears the values, according to its | |
119 | argument. | |
120 | ||
121 | Arguments: | |
122 | addr the address in question, or NULL to clear values | |
123 | Returns: nothing | |
124 | */ | |
125 | ||
126 | void | |
127 | deliver_set_expansions(address_item *addr) | |
128 | { | |
d6c82d7b | 129 | if (!addr) |
059ec3d9 | 130 | { |
55414b25 | 131 | const uschar ***p = address_expansions; |
d6c82d7b | 132 | while (*p) **p++ = NULL; |
059ec3d9 PH |
133 | return; |
134 | } | |
135 | ||
136 | /* Exactly what gets set depends on whether there is one or more addresses, and | |
137 | what they contain. These first ones are always set, taking their values from | |
138 | the first address. */ | |
139 | ||
d6c82d7b | 140 | if (!addr->host_list) |
059ec3d9 PH |
141 | { |
142 | deliver_host = deliver_host_address = US""; | |
a7538db1 | 143 | deliver_host_port = 0; |
059ec3d9 PH |
144 | } |
145 | else | |
146 | { | |
147 | deliver_host = addr->host_list->name; | |
148 | deliver_host_address = addr->host_list->address; | |
a7538db1 | 149 | deliver_host_port = addr->host_list->port; |
059ec3d9 PH |
150 | } |
151 | ||
152 | deliver_recipients = addr; | |
d43cbe25 JH |
153 | deliver_address_data = addr->prop.address_data; |
154 | deliver_domain_data = addr->prop.domain_data; | |
155 | deliver_localpart_data = addr->prop.localpart_data; | |
059ec3d9 PH |
156 | |
157 | /* These may be unset for multiple addresses */ | |
158 | ||
159 | deliver_domain = addr->domain; | |
160 | self_hostname = addr->self_hostname; | |
161 | ||
8523533c TK |
162 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
163 | bmi_deliver = 1; /* deliver by default */ | |
164 | bmi_alt_location = NULL; | |
165 | bmi_base64_verdict = NULL; | |
166 | bmi_base64_tracker_verdict = NULL; | |
167 | #endif | |
168 | ||
059ec3d9 PH |
169 | /* If there's only one address we can set everything. */ |
170 | ||
d6c82d7b | 171 | if (!addr->next) |
059ec3d9 PH |
172 | { |
173 | address_item *addr_orig; | |
174 | ||
175 | deliver_localpart = addr->local_part; | |
176 | deliver_localpart_prefix = addr->prefix; | |
177 | deliver_localpart_suffix = addr->suffix; | |
178 | ||
d6c82d7b | 179 | for (addr_orig = addr; addr_orig->parent; addr_orig = addr_orig->parent) ; |
059ec3d9 PH |
180 | deliver_domain_orig = addr_orig->domain; |
181 | ||
182 | /* Re-instate any prefix and suffix in the original local part. In all | |
183 | normal cases, the address will have a router associated with it, and we can | |
184 | choose the caseful or caseless version accordingly. However, when a system | |
185 | filter sets up a pipe, file, or autoreply delivery, no router is involved. | |
186 | In this case, though, there won't be any prefix or suffix to worry about. */ | |
187 | ||
d6c82d7b JH |
188 | deliver_localpart_orig = !addr_orig->router |
189 | ? addr_orig->local_part | |
190 | : addr_orig->router->caseful_local_part | |
191 | ? addr_orig->cc_local_part | |
192 | : addr_orig->lc_local_part; | |
059ec3d9 PH |
193 | |
194 | /* If there's a parent, make its domain and local part available, and if | |
195 | delivering to a pipe or file, or sending an autoreply, get the local | |
196 | part from the parent. For pipes and files, put the pipe or file string | |
197 | into address_pipe and address_file. */ | |
198 | ||
d6c82d7b | 199 | if (addr->parent) |
059ec3d9 PH |
200 | { |
201 | deliver_domain_parent = addr->parent->domain; | |
d6c82d7b JH |
202 | deliver_localpart_parent = !addr->parent->router |
203 | ? addr->parent->local_part | |
204 | : addr->parent->router->caseful_local_part | |
205 | ? addr->parent->cc_local_part | |
206 | : addr->parent->lc_local_part; | |
059ec3d9 PH |
207 | |
208 | /* File deliveries have their own flag because they need to be picked out | |
209 | as special more often. */ | |
210 | ||
211 | if (testflag(addr, af_pfr)) | |
212 | { | |
d6c82d7b JH |
213 | if (testflag(addr, af_file)) address_file = addr->local_part; |
214 | else if (deliver_localpart[0] == '|') address_pipe = addr->local_part; | |
059ec3d9 PH |
215 | deliver_localpart = addr->parent->local_part; |
216 | deliver_localpart_prefix = addr->parent->prefix; | |
217 | deliver_localpart_suffix = addr->parent->suffix; | |
218 | } | |
219 | } | |
8523533c TK |
220 | |
221 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
222 | /* Set expansion variables related to Brightmail AntiSpam */ | |
223 | bmi_base64_verdict = bmi_get_base64_verdict(deliver_localpart_orig, deliver_domain_orig); | |
224 | bmi_base64_tracker_verdict = bmi_get_base64_tracker_verdict(bmi_base64_verdict); | |
225 | /* get message delivery status (0 - don't deliver | 1 - deliver) */ | |
226 | bmi_deliver = bmi_get_delivery_status(bmi_base64_verdict); | |
227 | /* if message is to be delivered, get eventual alternate location */ | |
d6c82d7b | 228 | if (bmi_deliver == 1) |
8523533c | 229 | bmi_alt_location = bmi_get_alt_location(bmi_base64_verdict); |
8523533c TK |
230 | #endif |
231 | ||
059ec3d9 PH |
232 | } |
233 | ||
234 | /* For multiple addresses, don't set local part, and leave the domain and | |
f7fd3850 PH |
235 | self_hostname set only if it is the same for all of them. It is possible to |
236 | have multiple pipe and file addresses, but only when all addresses have routed | |
237 | to the same pipe or file. */ | |
059ec3d9 PH |
238 | |
239 | else | |
240 | { | |
241 | address_item *addr2; | |
f7fd3850 PH |
242 | if (testflag(addr, af_pfr)) |
243 | { | |
d6c82d7b JH |
244 | if (testflag(addr, af_file)) address_file = addr->local_part; |
245 | else if (addr->local_part[0] == '|') address_pipe = addr->local_part; | |
f7fd3850 | 246 | } |
d6c82d7b | 247 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 | 248 | { |
d6c82d7b | 249 | if (deliver_domain && Ustrcmp(deliver_domain, addr2->domain) != 0) |
059ec3d9 | 250 | deliver_domain = NULL; |
d6c82d7b JH |
251 | if ( self_hostname |
252 | && ( !addr2->self_hostname | |
253 | || Ustrcmp(self_hostname, addr2->self_hostname) != 0 | |
254 | ) ) | |
059ec3d9 | 255 | self_hostname = NULL; |
d6c82d7b | 256 | if (!deliver_domain && !self_hostname) break; |
059ec3d9 PH |
257 | } |
258 | } | |
259 | } | |
260 | ||
261 | ||
262 | ||
263 | ||
264 | /************************************************* | |
265 | * Open a msglog file * | |
266 | *************************************************/ | |
267 | ||
268 | /* This function is used both for normal message logs, and for files in the | |
269 | msglog directory that are used to catch output from pipes. Try to create the | |
270 | directory if it does not exist. From release 4.21, normal message logs should | |
271 | be created when the message is received. | |
272 | ||
273 | Argument: | |
274 | filename the file name | |
275 | mode the mode required | |
276 | error used for saying what failed | |
277 | ||
278 | Returns: a file descriptor, or -1 (with errno set) | |
279 | */ | |
280 | ||
281 | static int | |
282 | open_msglog_file(uschar *filename, int mode, uschar **error) | |
283 | { | |
284 | int fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode); | |
285 | ||
286 | if (fd < 0 && errno == ENOENT) | |
287 | { | |
a2da3176 JH |
288 | uschar * temp = string_sprintf("msglog%s%s%s%s", |
289 | *queue_name ? "/" : "", queue_name, | |
290 | *message_subdir ? "/" : "", message_subdir); | |
059ec3d9 PH |
291 | (void)directory_make(spool_directory, temp, MSGLOG_DIRECTORY_MODE, TRUE); |
292 | fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode); | |
293 | } | |
294 | ||
295 | /* Set the close-on-exec flag and change the owner to the exim uid/gid (this | |
296 | function is called as root). Double check the mode, because the group setting | |
297 | doesn't always get set automatically. */ | |
298 | ||
299 | if (fd >= 0) | |
300 | { | |
ff790e47 | 301 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
059ec3d9 PH |
302 | if (fchown(fd, exim_uid, exim_gid) < 0) |
303 | { | |
304 | *error = US"chown"; | |
305 | return -1; | |
306 | } | |
307 | if (fchmod(fd, mode) < 0) | |
308 | { | |
309 | *error = US"chmod"; | |
310 | return -1; | |
311 | } | |
312 | } | |
313 | else *error = US"create"; | |
314 | ||
315 | return fd; | |
316 | } | |
317 | ||
318 | ||
319 | ||
320 | ||
321 | /************************************************* | |
322 | * Write to msglog if required * | |
323 | *************************************************/ | |
324 | ||
325 | /* Write to the message log, if configured. This function may also be called | |
326 | from transports. | |
327 | ||
328 | Arguments: | |
329 | format a string format | |
330 | ||
331 | Returns: nothing | |
332 | */ | |
333 | ||
334 | void | |
335 | deliver_msglog(const char *format, ...) | |
336 | { | |
337 | va_list ap; | |
338 | if (!message_logs) return; | |
339 | va_start(ap, format); | |
340 | vfprintf(message_log, format, ap); | |
341 | fflush(message_log); | |
342 | va_end(ap); | |
343 | } | |
344 | ||
345 | ||
346 | ||
347 | ||
348 | /************************************************* | |
349 | * Replicate status for batch * | |
350 | *************************************************/ | |
351 | ||
352 | /* When a transport handles a batch of addresses, it may treat them | |
353 | individually, or it may just put the status in the first one, and return FALSE, | |
354 | requesting that the status be copied to all the others externally. This is the | |
355 | replication function. As well as the status, it copies the transport pointer, | |
356 | which may have changed if appendfile passed the addresses on to a different | |
357 | transport. | |
358 | ||
359 | Argument: pointer to the first address in a chain | |
360 | Returns: nothing | |
361 | */ | |
362 | ||
363 | static void | |
364 | replicate_status(address_item *addr) | |
365 | { | |
366 | address_item *addr2; | |
d6c82d7b | 367 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 | 368 | { |
d6c82d7b | 369 | addr2->transport = addr->transport; |
059ec3d9 | 370 | addr2->transport_return = addr->transport_return; |
d6c82d7b JH |
371 | addr2->basic_errno = addr->basic_errno; |
372 | addr2->more_errno = addr->more_errno; | |
373 | addr2->special_action = addr->special_action; | |
374 | addr2->message = addr->message; | |
375 | addr2->user_message = addr->user_message; | |
059ec3d9 PH |
376 | } |
377 | } | |
378 | ||
379 | ||
380 | ||
381 | /************************************************* | |
382 | * Compare lists of hosts * | |
383 | *************************************************/ | |
384 | ||
385 | /* This function is given two pointers to chains of host items, and it yields | |
386 | TRUE if the lists refer to the same hosts in the same order, except that | |
387 | ||
388 | (1) Multiple hosts with the same non-negative MX values are permitted to appear | |
389 | in different orders. Round-robinning nameservers can cause this to happen. | |
390 | ||
391 | (2) Multiple hosts with the same negative MX values less than MX_NONE are also | |
392 | permitted to appear in different orders. This is caused by randomizing | |
393 | hosts lists. | |
394 | ||
395 | This enables Exim to use a single SMTP transaction for sending to two entirely | |
396 | different domains that happen to end up pointing at the same hosts. | |
397 | ||
398 | Arguments: | |
399 | one points to the first host list | |
400 | two points to the second host list | |
401 | ||
402 | Returns: TRUE if the lists refer to the same host set | |
403 | */ | |
404 | ||
405 | static BOOL | |
406 | same_hosts(host_item *one, host_item *two) | |
407 | { | |
d6c82d7b | 408 | while (one && two) |
059ec3d9 PH |
409 | { |
410 | if (Ustrcmp(one->name, two->name) != 0) | |
411 | { | |
412 | int mx = one->mx; | |
413 | host_item *end_one = one; | |
414 | host_item *end_two = two; | |
415 | ||
416 | /* Batch up only if there was no MX and the list was not randomized */ | |
417 | ||
418 | if (mx == MX_NONE) return FALSE; | |
419 | ||
420 | /* Find the ends of the shortest sequence of identical MX values */ | |
421 | ||
d6c82d7b JH |
422 | while ( end_one->next && end_one->next->mx == mx |
423 | && end_two->next && end_two->next->mx == mx) | |
059ec3d9 PH |
424 | { |
425 | end_one = end_one->next; | |
426 | end_two = end_two->next; | |
427 | } | |
428 | ||
429 | /* If there aren't any duplicates, there's no match. */ | |
430 | ||
431 | if (end_one == one) return FALSE; | |
432 | ||
433 | /* For each host in the 'one' sequence, check that it appears in the 'two' | |
434 | sequence, returning FALSE if not. */ | |
435 | ||
436 | for (;;) | |
437 | { | |
438 | host_item *hi; | |
439 | for (hi = two; hi != end_two->next; hi = hi->next) | |
440 | if (Ustrcmp(one->name, hi->name) == 0) break; | |
441 | if (hi == end_two->next) return FALSE; | |
442 | if (one == end_one) break; | |
443 | one = one->next; | |
444 | } | |
445 | ||
446 | /* All the hosts in the 'one' sequence were found in the 'two' sequence. | |
447 | Ensure both are pointing at the last host, and carry on as for equality. */ | |
448 | ||
449 | two = end_two; | |
450 | } | |
451 | ||
452 | /* Hosts matched */ | |
453 | ||
454 | one = one->next; | |
455 | two = two->next; | |
456 | } | |
457 | ||
458 | /* True if both are NULL */ | |
459 | ||
460 | return (one == two); | |
461 | } | |
462 | ||
463 | ||
464 | ||
465 | /************************************************* | |
466 | * Compare header lines * | |
467 | *************************************************/ | |
468 | ||
469 | /* This function is given two pointers to chains of header items, and it yields | |
470 | TRUE if they are the same header texts in the same order. | |
471 | ||
472 | Arguments: | |
473 | one points to the first header list | |
474 | two points to the second header list | |
475 | ||
476 | Returns: TRUE if the lists refer to the same header set | |
477 | */ | |
478 | ||
479 | static BOOL | |
480 | same_headers(header_line *one, header_line *two) | |
481 | { | |
d6c82d7b | 482 | for (;; one = one->next, two = two->next) |
059ec3d9 PH |
483 | { |
484 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 485 | if (!one || !two) return FALSE; |
059ec3d9 | 486 | if (Ustrcmp(one->text, two->text) != 0) return FALSE; |
059ec3d9 PH |
487 | } |
488 | } | |
489 | ||
490 | ||
491 | ||
492 | /************************************************* | |
493 | * Compare string settings * | |
494 | *************************************************/ | |
495 | ||
496 | /* This function is given two pointers to strings, and it returns | |
497 | TRUE if they are the same pointer, or if the two strings are the same. | |
498 | ||
499 | Arguments: | |
500 | one points to the first string | |
501 | two points to the second string | |
502 | ||
503 | Returns: TRUE or FALSE | |
504 | */ | |
505 | ||
506 | static BOOL | |
507 | same_strings(uschar *one, uschar *two) | |
508 | { | |
509 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 510 | if (!one || !two) return FALSE; |
059ec3d9 PH |
511 | return (Ustrcmp(one, two) == 0); |
512 | } | |
513 | ||
514 | ||
515 | ||
516 | /************************************************* | |
517 | * Compare uid/gid for addresses * | |
518 | *************************************************/ | |
519 | ||
520 | /* This function is given a transport and two addresses. It yields TRUE if the | |
521 | uid/gid/initgroups settings for the two addresses are going to be the same when | |
522 | they are delivered. | |
523 | ||
524 | Arguments: | |
525 | tp the transort | |
526 | addr1 the first address | |
527 | addr2 the second address | |
528 | ||
529 | Returns: TRUE or FALSE | |
530 | */ | |
531 | ||
532 | static BOOL | |
533 | same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2) | |
534 | { | |
d6c82d7b JH |
535 | if ( !tp->uid_set && !tp->expand_uid |
536 | && !tp->deliver_as_creator | |
537 | && ( testflag(addr1, af_uid_set) != testflag(addr2, af_gid_set) | |
538 | || ( testflag(addr1, af_uid_set) | |
539 | && ( addr1->uid != addr2->uid | |
540 | || testflag(addr1, af_initgroups) != testflag(addr2, af_initgroups) | |
541 | ) ) ) ) | |
542 | return FALSE; | |
059ec3d9 | 543 | |
d6c82d7b JH |
544 | if ( !tp->gid_set && !tp->expand_gid |
545 | && ( testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set) | |
546 | || ( testflag(addr1, af_gid_set) | |
547 | && addr1->gid != addr2->gid | |
548 | ) ) ) | |
549 | return FALSE; | |
059ec3d9 PH |
550 | |
551 | return TRUE; | |
552 | } | |
553 | ||
554 | ||
555 | ||
556 | ||
557 | /************************************************* | |
558 | * Record that an address is complete * | |
559 | *************************************************/ | |
560 | ||
561 | /* This function records that an address is complete. This is straightforward | |
562 | for most addresses, where the unique address is just the full address with the | |
563 | domain lower cased. For homonyms (addresses that are the same as one of their | |
564 | ancestors) their are complications. Their unique addresses have \x\ prepended | |
565 | (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and | |
566 | cousins. | |
567 | ||
568 | Exim used to record the unique addresses of homonyms as "complete". This, | |
569 | however, fails when the pattern of redirection varies over time (e.g. if taking | |
570 | unseen copies at only some times of day) because the prepended numbers may vary | |
571 | from one delivery run to the next. This problem is solved by never recording | |
572 | prepended unique addresses as complete. Instead, when a homonymic address has | |
573 | actually been delivered via a transport, we record its basic unique address | |
574 | followed by the name of the transport. This is checked in subsequent delivery | |
575 | runs whenever an address is routed to a transport. | |
576 | ||
577 | If the completed address is a top-level one (has no parent, which means it | |
578 | cannot be homonymic) we also add the original address to the non-recipients | |
579 | tree, so that it gets recorded in the spool file and therefore appears as | |
580 | "done" in any spool listings. The original address may differ from the unique | |
581 | address in the case of the domain. | |
582 | ||
583 | Finally, this function scans the list of duplicates, marks as done any that | |
584 | match this address, and calls child_done() for their ancestors. | |
585 | ||
586 | Arguments: | |
587 | addr address item that has been completed | |
588 | now current time as a string | |
589 | ||
590 | Returns: nothing | |
591 | */ | |
592 | ||
593 | static void | |
594 | address_done(address_item *addr, uschar *now) | |
595 | { | |
596 | address_item *dup; | |
597 | ||
598 | update_spool = TRUE; /* Ensure spool gets updated */ | |
599 | ||
600 | /* Top-level address */ | |
601 | ||
d6c82d7b | 602 | if (!addr->parent) |
059ec3d9 PH |
603 | { |
604 | tree_add_nonrecipient(addr->unique); | |
605 | tree_add_nonrecipient(addr->address); | |
606 | } | |
607 | ||
608 | /* Homonymous child address */ | |
609 | ||
610 | else if (testflag(addr, af_homonym)) | |
611 | { | |
d6c82d7b | 612 | if (addr->transport) |
059ec3d9 PH |
613 | tree_add_nonrecipient( |
614 | string_sprintf("%s/%s", addr->unique + 3, addr->transport->name)); | |
059ec3d9 PH |
615 | } |
616 | ||
617 | /* Non-homonymous child address */ | |
618 | ||
619 | else tree_add_nonrecipient(addr->unique); | |
620 | ||
621 | /* Check the list of duplicate addresses and ensure they are now marked | |
622 | done as well. */ | |
623 | ||
d6c82d7b | 624 | for (dup = addr_duplicate; dup; dup = dup->next) |
059ec3d9 PH |
625 | if (Ustrcmp(addr->unique, dup->unique) == 0) |
626 | { | |
57730b52 | 627 | tree_add_nonrecipient(dup->unique); |
059ec3d9 PH |
628 | child_done(dup, now); |
629 | } | |
059ec3d9 PH |
630 | } |
631 | ||
632 | ||
633 | ||
634 | ||
635 | /************************************************* | |
636 | * Decrease counts in parents and mark done * | |
637 | *************************************************/ | |
638 | ||
639 | /* This function is called when an address is complete. If there is a parent | |
640 | address, its count of children is decremented. If there are still other | |
641 | children outstanding, the function exits. Otherwise, if the count has become | |
642 | zero, address_done() is called to mark the parent and its duplicates complete. | |
643 | Then loop for any earlier ancestors. | |
644 | ||
645 | Arguments: | |
646 | addr points to the completed address item | |
647 | now the current time as a string, for writing to the message log | |
648 | ||
649 | Returns: nothing | |
650 | */ | |
651 | ||
652 | static void | |
653 | child_done(address_item *addr, uschar *now) | |
654 | { | |
655 | address_item *aa; | |
d6c82d7b | 656 | while (addr->parent) |
059ec3d9 PH |
657 | { |
658 | addr = addr->parent; | |
659 | if ((addr->child_count -= 1) > 0) return; /* Incomplete parent */ | |
660 | address_done(addr, now); | |
661 | ||
662 | /* Log the completion of all descendents only when there is no ancestor with | |
663 | the same original address. */ | |
664 | ||
d6c82d7b | 665 | for (aa = addr->parent; aa; aa = aa->parent) |
059ec3d9 | 666 | if (Ustrcmp(aa->address, addr->address) == 0) break; |
d6c82d7b | 667 | if (aa) continue; |
059ec3d9 PH |
668 | |
669 | deliver_msglog("%s %s: children all complete\n", now, addr->address); | |
670 | DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address); | |
671 | } | |
672 | } | |
673 | ||
674 | ||
675 | ||
ac881e27 TF |
676 | /************************************************* |
677 | * Delivery logging support functions * | |
678 | *************************************************/ | |
679 | ||
680 | /* The LOGGING() checks in d_log_interface() are complicated for backwards | |
681 | compatibility. When outgoing interface logging was originally added, it was | |
682 | conditional on just incoming_interface (which is off by default). The | |
683 | outgoing_interface option is on by default to preserve this behaviour, but | |
684 | you can enable incoming_interface and disable outgoing_interface to get I= | |
685 | fields on incoming lines only. | |
686 | ||
687 | Arguments: | |
688 | s The log line buffer | |
689 | sizep Pointer to the buffer size | |
690 | ptrp Pointer to current index into buffer | |
691 | addr The address to be logged | |
692 | ||
693 | Returns: New value for s | |
694 | */ | |
059ec3d9 | 695 | |
67d81c10 | 696 | static uschar * |
ac881e27 | 697 | d_log_interface(uschar *s, int *sizep, int *ptrp) |
67d81c10 | 698 | { |
ac881e27 | 699 | if (LOGGING(incoming_interface) && LOGGING(outgoing_interface) |
d6c82d7b | 700 | && sending_ip_address) |
ac881e27 TF |
701 | { |
702 | s = string_append(s, sizep, ptrp, 2, US" I=[", sending_ip_address); | |
d6c82d7b JH |
703 | s = LOGGING(outgoing_port) |
704 | ? string_append(s, sizep, ptrp, 2, US"]:", | |
705 | string_sprintf("%d", sending_port)) | |
c2f669a4 | 706 | : string_catn(s, sizep, ptrp, US"]", 1); |
ac881e27 TF |
707 | } |
708 | return s; | |
67d81c10 JH |
709 | } |
710 | ||
ac881e27 TF |
711 | |
712 | ||
713 | static uschar * | |
714 | d_hostlog(uschar *s, int *sizep, int *ptrp, address_item *addr) | |
715 | { | |
716 | s = string_append(s, sizep, ptrp, 5, US" H=", addr->host_used->name, | |
717 | US" [", addr->host_used->address, US"]"); | |
718 | if (LOGGING(outgoing_port)) | |
719 | s = string_append(s, sizep, ptrp, 2, US":", string_sprintf("%d", | |
720 | addr->host_used->port)); | |
e6d2a989 JH |
721 | |
722 | #ifdef SUPPORT_SOCKS | |
723 | if (LOGGING(proxy) && proxy_local_address) | |
724 | { | |
725 | s = string_append(s, sizep, ptrp, 3, US" PRX=[", proxy_local_address, US"]"); | |
726 | if (LOGGING(outgoing_port)) | |
727 | s = string_append(s, sizep, ptrp, 2, US":", string_sprintf("%d", | |
728 | proxy_local_port)); | |
729 | } | |
730 | #endif | |
731 | ||
ac881e27 TF |
732 | return d_log_interface(s, sizep, ptrp); |
733 | } | |
734 | ||
735 | ||
736 | ||
e6d2a989 JH |
737 | |
738 | ||
67d81c10 JH |
739 | #ifdef SUPPORT_TLS |
740 | static uschar * | |
741 | d_tlslog(uschar * s, int * sizep, int * ptrp, address_item * addr) | |
742 | { | |
d6c82d7b | 743 | if (LOGGING(tls_cipher) && addr->cipher) |
ac881e27 | 744 | s = string_append(s, sizep, ptrp, 2, US" X=", addr->cipher); |
d6c82d7b | 745 | if (LOGGING(tls_certificate_verified) && addr->cipher) |
ac881e27 TF |
746 | s = string_append(s, sizep, ptrp, 2, US" CV=", |
747 | testflag(addr, af_cert_verified) | |
748 | ? | |
53a7196b | 749 | #ifdef EXPERIMENTAL_DANE |
ac881e27 TF |
750 | testflag(addr, af_dane_verified) |
751 | ? "dane" | |
752 | : | |
53a7196b | 753 | #endif |
ac881e27 TF |
754 | "yes" |
755 | : "no"); | |
d6c82d7b | 756 | if (LOGGING(tls_peerdn) && addr->peerdn) |
ac881e27 TF |
757 | s = string_append(s, sizep, ptrp, 3, US" DN=\"", |
758 | string_printing(addr->peerdn), US"\""); | |
759 | return s; | |
67d81c10 JH |
760 | } |
761 | #endif | |
762 | ||
a7538db1 | 763 | |
14a465c3 JH |
764 | |
765 | ||
0cbf2b82 | 766 | #ifndef DISABLE_EVENT |
b30275b8 | 767 | uschar * |
55414b25 | 768 | event_raise(uschar * action, const uschar * event, uschar * ev_data) |
a7538db1 JH |
769 | { |
770 | uschar * s; | |
771 | if (action) | |
772 | { | |
773 | DEBUG(D_deliver) | |
774ef2d7 | 774 | debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n", |
a7538db1 JH |
775 | event, |
776 | action, deliver_host_address); | |
777 | ||
774ef2d7 JH |
778 | event_name = event; |
779 | event_data = ev_data; | |
a7538db1 JH |
780 | |
781 | if (!(s = expand_string(action)) && *expand_string_message) | |
782 | log_write(0, LOG_MAIN|LOG_PANIC, | |
774ef2d7 | 783 | "failed to expand event_action %s in %s: %s\n", |
a7538db1 JH |
784 | event, transport_name, expand_string_message); |
785 | ||
774ef2d7 | 786 | event_name = event_data = NULL; |
a7538db1 JH |
787 | |
788 | /* If the expansion returns anything but an empty string, flag for | |
789 | the caller to modify his normal processing | |
790 | */ | |
791 | if (s && *s) | |
792 | { | |
793 | DEBUG(D_deliver) | |
774ef2d7 | 794 | debug_printf("Event(%s): event_action returned \"%s\"\n", event, s); |
b30275b8 | 795 | return s; |
a7538db1 JH |
796 | } |
797 | } | |
b30275b8 | 798 | return NULL; |
a7538db1 | 799 | } |
14a465c3 | 800 | |
5ef5dd52 | 801 | void |
55414b25 | 802 | msg_event_raise(const uschar * event, const address_item * addr) |
14a465c3 | 803 | { |
55414b25 | 804 | const uschar * save_domain = deliver_domain; |
14a465c3 | 805 | uschar * save_local = deliver_localpart; |
55414b25 | 806 | const uschar * save_host = deliver_host; |
5ef5dd52 JB |
807 | const uschar * save_address = deliver_host_address; |
808 | const int save_port = deliver_host_port; | |
14a465c3 JH |
809 | |
810 | if (!addr->transport) | |
811 | return; | |
812 | ||
813 | router_name = addr->router ? addr->router->name : NULL; | |
814 | transport_name = addr->transport->name; | |
815 | deliver_domain = addr->domain; | |
816 | deliver_localpart = addr->local_part; | |
c562fd30 | 817 | deliver_host = addr->host_used ? addr->host_used->name : NULL; |
14a465c3 | 818 | |
774ef2d7 | 819 | (void) event_raise(addr->transport->event_action, event, |
5ef5dd52 JB |
820 | addr->host_used |
821 | || Ustrcmp(addr->transport->driver_name, "smtp") == 0 | |
822 | || Ustrcmp(addr->transport->driver_name, "lmtp") == 0 | |
823 | ? addr->message : NULL); | |
14a465c3 | 824 | |
5ef5dd52 JB |
825 | deliver_host_port = save_port; |
826 | deliver_host_address = save_address; | |
c562fd30 | 827 | deliver_host = save_host; |
14a465c3 JH |
828 | deliver_localpart = save_local; |
829 | deliver_domain = save_domain; | |
830 | router_name = transport_name = NULL; | |
831 | } | |
0cbf2b82 | 832 | #endif /*DISABLE_EVENT*/ |
14a465c3 JH |
833 | |
834 | ||
a7538db1 | 835 | |
817d9f57 | 836 | /* If msg is NULL this is a delivery log and logchar is used. Otherwise |
67d81c10 | 837 | this is a nonstandard call; no two-character delivery flag is written |
817d9f57 JH |
838 | but sender-host and sender are prefixed and "msg" is inserted in the log line. |
839 | ||
840 | Arguments: | |
841 | flags passed to log_write() | |
842 | */ | |
e4bdf652 | 843 | void |
817d9f57 | 844 | delivery_log(int flags, address_item * addr, int logchar, uschar * msg) |
e4bdf652 JH |
845 | { |
846 | uschar *log_address; | |
847 | int size = 256; /* Used for a temporary, */ | |
848 | int ptr = 0; /* expanding buffer, for */ | |
849 | uschar *s; /* building log lines; */ | |
850 | void *reset_point; /* released afterwards. */ | |
851 | ||
e4bdf652 JH |
852 | /* Log the delivery on the main log. We use an extensible string to build up |
853 | the log line, and reset the store afterwards. Remote deliveries should always | |
854 | have a pointer to the host item that succeeded; local deliveries can have a | |
855 | pointer to a single host item in their host list, for use by the transport. */ | |
856 | ||
0cbf2b82 | 857 | #ifndef DISABLE_EVENT |
a7538db1 | 858 | /* presume no successful remote delivery */ |
783b385f | 859 | lookup_dnssec_authenticated = NULL; |
d68218c7 JH |
860 | #endif |
861 | ||
e4bdf652 | 862 | s = reset_point = store_get(size); |
e4bdf652 | 863 | |
6c6d6e48 | 864 | log_address = string_log_address(addr, LOGGING(all_parents), TRUE); |
817d9f57 JH |
865 | if (msg) |
866 | s = string_append(s, &size, &ptr, 3, host_and_ident(TRUE), US" ", log_address); | |
867 | else | |
868 | { | |
869 | s[ptr++] = logchar; | |
870 | s = string_append(s, &size, &ptr, 2, US"> ", log_address); | |
871 | } | |
e4bdf652 | 872 | |
6c6d6e48 | 873 | if (LOGGING(sender_on_delivery) || msg) |
3c8b3577 | 874 | s = string_append(s, &size, &ptr, 3, US" F=<", |
8c5d388a | 875 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
876 | testflag(addr, af_utf8_downcvt) |
877 | ? string_address_utf8_to_alabel(sender_address, NULL) | |
878 | : | |
879 | #endif | |
880 | sender_address, | |
881 | US">"); | |
e4bdf652 JH |
882 | |
883 | #ifdef EXPERIMENTAL_SRS | |
d43cbe25 JH |
884 | if(addr->prop.srs_sender) |
885 | s = string_append(s, &size, &ptr, 3, US" SRS=<", addr->prop.srs_sender, US">"); | |
e4bdf652 JH |
886 | #endif |
887 | ||
888 | /* You might think that the return path must always be set for a successful | |
889 | delivery; indeed, I did for some time, until this statement crashed. The case | |
890 | when it is not set is for a delivery to /dev/null which is optimised by not | |
891 | being run at all. */ | |
892 | ||
d6c82d7b | 893 | if (used_return_path && LOGGING(return_path_on_delivery)) |
e4bdf652 JH |
894 | s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">"); |
895 | ||
817d9f57 JH |
896 | if (msg) |
897 | s = string_append(s, &size, &ptr, 2, US" ", msg); | |
e4bdf652 | 898 | |
817d9f57 | 899 | /* For a delivery from a system filter, there may not be a router */ |
d6c82d7b | 900 | if (addr->router) |
e4bdf652 JH |
901 | s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name); |
902 | ||
903 | s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name); | |
904 | ||
6c6d6e48 | 905 | if (LOGGING(delivery_size)) |
e4bdf652 JH |
906 | s = string_append(s, &size, &ptr, 2, US" S=", |
907 | string_sprintf("%d", transport_count)); | |
908 | ||
909 | /* Local delivery */ | |
910 | ||
911 | if (addr->transport->info->local) | |
912 | { | |
a7538db1 | 913 | if (addr->host_list) |
e4bdf652 | 914 | s = string_append(s, &size, &ptr, 2, US" H=", addr->host_list->name); |
ac881e27 | 915 | s = d_log_interface(s, &size, &ptr); |
d6c82d7b | 916 | if (addr->shadow_message) |
c2f669a4 | 917 | s = string_cat(s, &size, &ptr, addr->shadow_message); |
e4bdf652 JH |
918 | } |
919 | ||
920 | /* Remote delivery */ | |
921 | ||
922 | else | |
923 | { | |
783b385f | 924 | if (addr->host_used) |
e4bdf652 | 925 | { |
67d81c10 | 926 | s = d_hostlog(s, &size, &ptr, addr); |
e4bdf652 | 927 | if (continue_sequence > 1) |
c2f669a4 | 928 | s = string_catn(s, &size, &ptr, US"*", 1); |
d68218c7 | 929 | |
0cbf2b82 | 930 | #ifndef DISABLE_EVENT |
a7538db1 JH |
931 | deliver_host_address = addr->host_used->address; |
932 | deliver_host_port = addr->host_used->port; | |
029f4192 | 933 | deliver_host = addr->host_used->name; |
783b385f JH |
934 | |
935 | /* DNS lookup status */ | |
936 | lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes" | |
937 | : addr->host_used->dnssec==DS_NO ? US"no" | |
938 | : NULL; | |
a7538db1 | 939 | #endif |
e4bdf652 JH |
940 | } |
941 | ||
a7538db1 | 942 | #ifdef SUPPORT_TLS |
67d81c10 | 943 | s = d_tlslog(s, &size, &ptr, addr); |
a7538db1 | 944 | #endif |
e4bdf652 | 945 | |
018c60d7 | 946 | if (addr->authenticator) |
6f123593 | 947 | { |
018c60d7 JH |
948 | s = string_append(s, &size, &ptr, 2, US" A=", addr->authenticator); |
949 | if (addr->auth_id) | |
c8e2fc1e | 950 | { |
018c60d7 | 951 | s = string_append(s, &size, &ptr, 2, US":", addr->auth_id); |
6c6d6e48 | 952 | if (LOGGING(smtp_mailauth) && addr->auth_sndr) |
018c60d7 | 953 | s = string_append(s, &size, &ptr, 2, US":", addr->auth_sndr); |
c8e2fc1e | 954 | } |
6f123593 JH |
955 | } |
956 | ||
a7538db1 | 957 | #ifndef DISABLE_PRDR |
fd98a5c6 JH |
958 | if (addr->flags & af_prdr_used) |
959 | s = string_append(s, &size, &ptr, 1, US" PRDR"); | |
a7538db1 | 960 | #endif |
76f44207 WB |
961 | } |
962 | ||
963 | /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */ | |
fd98a5c6 | 964 | |
d6c82d7b JH |
965 | if ( LOGGING(smtp_confirmation) |
966 | && addr->message | |
967 | && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0) | |
968 | ) | |
76f44207 | 969 | { |
b980ed83 | 970 | unsigned i; |
1c5b1499 | 971 | unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024; |
76f44207 WB |
972 | uschar *p = big_buffer; |
973 | uschar *ss = addr->message; | |
974 | *p++ = '\"'; | |
b980ed83 | 975 | for (i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */ |
e4bdf652 | 976 | { |
27520a68 | 977 | if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */ |
76f44207 | 978 | *p++ = ss[i]; |
e4bdf652 | 979 | } |
76f44207 WB |
980 | *p++ = '\"'; |
981 | *p = 0; | |
982 | s = string_append(s, &size, &ptr, 2, US" C=", big_buffer); | |
e4bdf652 JH |
983 | } |
984 | ||
985 | /* Time on queue and actual time taken to deliver */ | |
986 | ||
6c6d6e48 | 987 | if (LOGGING(queue_time)) |
e4bdf652 | 988 | s = string_append(s, &size, &ptr, 2, US" QT=", |
19050083 | 989 | readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) ); |
e4bdf652 | 990 | |
6c6d6e48 | 991 | if (LOGGING(deliver_time)) |
e4bdf652 JH |
992 | s = string_append(s, &size, &ptr, 2, US" DT=", |
993 | readconf_printtime(addr->more_errno)); | |
e4bdf652 JH |
994 | |
995 | /* string_cat() always leaves room for the terminator. Release the | |
996 | store we used to build the line after writing it. */ | |
997 | ||
998 | s[ptr] = 0; | |
817d9f57 | 999 | log_write(0, flags, "%s", s); |
d68218c7 | 1000 | |
0cbf2b82 | 1001 | #ifndef DISABLE_EVENT |
774ef2d7 | 1002 | if (!msg) msg_event_raise(US"msg:delivery", addr); |
d68218c7 | 1003 | #endif |
14a465c3 | 1004 | |
e4bdf652 JH |
1005 | store_reset(reset_point); |
1006 | return; | |
1007 | } | |
1008 | ||
1009 | ||
1010 | ||
059ec3d9 PH |
1011 | /************************************************* |
1012 | * Actions at the end of handling an address * | |
1013 | *************************************************/ | |
1014 | ||
1015 | /* This is a function for processing a single address when all that can be done | |
1016 | with it has been done. | |
1017 | ||
1018 | Arguments: | |
1019 | addr points to the address block | |
1020 | result the result of the delivery attempt | |
1021 | logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC) | |
1022 | driver_type indicates which type of driver (transport, or router) was last | |
1023 | to process the address | |
1024 | logchar '=' or '-' for use when logging deliveries with => or -> | |
1025 | ||
1026 | Returns: nothing | |
1027 | */ | |
1028 | ||
1029 | static void | |
1030 | post_process_one(address_item *addr, int result, int logflags, int driver_type, | |
1031 | int logchar) | |
1032 | { | |
1033 | uschar *now = tod_stamp(tod_log); | |
1034 | uschar *driver_kind = NULL; | |
1035 | uschar *driver_name = NULL; | |
1036 | uschar *log_address; | |
1037 | ||
1038 | int size = 256; /* Used for a temporary, */ | |
1039 | int ptr = 0; /* expanding buffer, for */ | |
1040 | uschar *s; /* building log lines; */ | |
1041 | void *reset_point; /* released afterwards. */ | |
1042 | ||
059ec3d9 PH |
1043 | DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result); |
1044 | ||
1045 | /* Set up driver kind and name for logging. Disable logging if the router or | |
1046 | transport has disabled it. */ | |
1047 | ||
1048 | if (driver_type == DTYPE_TRANSPORT) | |
1049 | { | |
d6c82d7b | 1050 | if (addr->transport) |
059ec3d9 PH |
1051 | { |
1052 | driver_name = addr->transport->name; | |
1053 | driver_kind = US" transport"; | |
1054 | disable_logging = addr->transport->disable_logging; | |
1055 | } | |
1056 | else driver_kind = US"transporting"; | |
1057 | } | |
1058 | else if (driver_type == DTYPE_ROUTER) | |
1059 | { | |
d6c82d7b | 1060 | if (addr->router) |
059ec3d9 PH |
1061 | { |
1062 | driver_name = addr->router->name; | |
1063 | driver_kind = US" router"; | |
1064 | disable_logging = addr->router->disable_logging; | |
1065 | } | |
1066 | else driver_kind = US"routing"; | |
1067 | } | |
1068 | ||
1069 | /* If there's an error message set, ensure that it contains only printing | |
1070 | characters - it should, but occasionally things slip in and this at least | |
49c2d5ea PH |
1071 | stops the log format from getting wrecked. We also scan the message for an LDAP |
1072 | expansion item that has a password setting, and flatten the password. This is a | |
1073 | fudge, but I don't know a cleaner way of doing this. (If the item is badly | |
1074 | malformed, it won't ever have gone near LDAP.) */ | |
059ec3d9 | 1075 | |
d6c82d7b | 1076 | if (addr->message) |
49c2d5ea | 1077 | { |
55414b25 | 1078 | const uschar * s = string_printing(addr->message); |
f42deca9 JH |
1079 | |
1080 | /* deconst cast ok as string_printing known to have alloc'n'copied */ | |
1081 | addr->message = expand_hide_passwords(US s); | |
49c2d5ea | 1082 | } |
059ec3d9 PH |
1083 | |
1084 | /* If we used a transport that has one of the "return_output" options set, and | |
1085 | if it did in fact generate some output, then for return_output we treat the | |
1086 | message as failed if it was not already set that way, so that the output gets | |
1087 | returned to the sender, provided there is a sender to send it to. For | |
1088 | return_fail_output, do this only if the delivery failed. Otherwise we just | |
1089 | unlink the file, and remove the name so that if the delivery failed, we don't | |
1090 | try to send back an empty or unwanted file. The log_output options operate only | |
1091 | on a non-empty file. | |
1092 | ||
1093 | In any case, we close the message file, because we cannot afford to leave a | |
1094 | file-descriptor for one address while processing (maybe very many) others. */ | |
1095 | ||
d6c82d7b | 1096 | if (addr->return_file >= 0 && addr->return_filename) |
059ec3d9 PH |
1097 | { |
1098 | BOOL return_output = FALSE; | |
1099 | struct stat statbuf; | |
54fc8428 | 1100 | (void)EXIMfsync(addr->return_file); |
059ec3d9 PH |
1101 | |
1102 | /* If there is no output, do nothing. */ | |
1103 | ||
1104 | if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0) | |
1105 | { | |
1106 | transport_instance *tb = addr->transport; | |
1107 | ||
1108 | /* Handle logging options */ | |
1109 | ||
d6c82d7b JH |
1110 | if ( tb->log_output |
1111 | || result == FAIL && tb->log_fail_output | |
1112 | || result == DEFER && tb->log_defer_output | |
1113 | ) | |
059ec3d9 PH |
1114 | { |
1115 | uschar *s; | |
1116 | FILE *f = Ufopen(addr->return_filename, "rb"); | |
d6c82d7b | 1117 | if (!f) |
059ec3d9 PH |
1118 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output " |
1119 | "from %s transport: %s", addr->return_filename, tb->name, | |
1120 | strerror(errno)); | |
1121 | else | |
d6c82d7b | 1122 | if ((s = US Ufgets(big_buffer, big_buffer_size, f))) |
059ec3d9 PH |
1123 | { |
1124 | uschar *p = big_buffer + Ustrlen(big_buffer); | |
55414b25 | 1125 | const uschar * sp; |
059ec3d9 PH |
1126 | while (p > big_buffer && isspace(p[-1])) p--; |
1127 | *p = 0; | |
55414b25 | 1128 | sp = string_printing(big_buffer); |
059ec3d9 | 1129 | log_write(0, LOG_MAIN, "<%s>: %s transport output: %s", |
55414b25 | 1130 | addr->address, tb->name, sp); |
059ec3d9 | 1131 | } |
f1e894f3 | 1132 | (void)fclose(f); |
059ec3d9 PH |
1133 | } |
1134 | ||
1135 | /* Handle returning options, but only if there is an address to return | |
1136 | the text to. */ | |
1137 | ||
d6c82d7b | 1138 | if (sender_address[0] != 0 || addr->prop.errors_address) |
059ec3d9 PH |
1139 | if (tb->return_output) |
1140 | { | |
1141 | addr->transport_return = result = FAIL; | |
d6c82d7b | 1142 | if (addr->basic_errno == 0 && !addr->message) |
059ec3d9 PH |
1143 | addr->message = US"return message generated"; |
1144 | return_output = TRUE; | |
1145 | } | |
1146 | else | |
1147 | if (tb->return_fail_output && result == FAIL) return_output = TRUE; | |
059ec3d9 PH |
1148 | } |
1149 | ||
1150 | /* Get rid of the file unless it might be returned, but close it in | |
1151 | all cases. */ | |
1152 | ||
1153 | if (!return_output) | |
1154 | { | |
1155 | Uunlink(addr->return_filename); | |
1156 | addr->return_filename = NULL; | |
1157 | addr->return_file = -1; | |
1158 | } | |
1159 | ||
f1e894f3 | 1160 | (void)close(addr->return_file); |
059ec3d9 PH |
1161 | } |
1162 | ||
9d1c15ef | 1163 | /* The success case happens only after delivery by a transport. */ |
059ec3d9 PH |
1164 | |
1165 | if (result == OK) | |
1166 | { | |
1167 | addr->next = addr_succeed; | |
1168 | addr_succeed = addr; | |
1169 | ||
1170 | /* Call address_done() to ensure that we don't deliver to this address again, | |
1171 | and write appropriate things to the message log. If it is a child address, we | |
1172 | call child_done() to scan the ancestors and mark them complete if this is the | |
1173 | last child to complete. */ | |
1174 | ||
1175 | address_done(addr, now); | |
1176 | DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address); | |
1177 | ||
d6c82d7b | 1178 | if (!addr->parent) |
059ec3d9 PH |
1179 | deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address, |
1180 | driver_name, driver_kind); | |
059ec3d9 PH |
1181 | else |
1182 | { | |
1183 | deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address, | |
1184 | addr->parent->address, driver_name, driver_kind); | |
1185 | child_done(addr, now); | |
1186 | } | |
1187 | ||
774ef2d7 | 1188 | /* Certificates for logging (via events) */ |
a7538db1 | 1189 | #ifdef SUPPORT_TLS |
9d1c15ef JH |
1190 | tls_out.ourcert = addr->ourcert; |
1191 | addr->ourcert = NULL; | |
1192 | tls_out.peercert = addr->peercert; | |
1193 | addr->peercert = NULL; | |
018058b2 | 1194 | |
018058b2 JH |
1195 | tls_out.cipher = addr->cipher; |
1196 | tls_out.peerdn = addr->peerdn; | |
1197 | tls_out.ocsp = addr->ocsp; | |
83b27293 JH |
1198 | # ifdef EXPERIMENTAL_DANE |
1199 | tls_out.dane_verified = testflag(addr, af_dane_verified); | |
1200 | # endif | |
a7538db1 | 1201 | #endif |
9d1c15ef | 1202 | |
817d9f57 | 1203 | delivery_log(LOG_MAIN, addr, logchar, NULL); |
9d1c15ef | 1204 | |
a7538db1 | 1205 | #ifdef SUPPORT_TLS |
790fbb71 JH |
1206 | tls_free_cert(&tls_out.ourcert); |
1207 | tls_free_cert(&tls_out.peercert); | |
018058b2 JH |
1208 | tls_out.cipher = NULL; |
1209 | tls_out.peerdn = NULL; | |
1210 | tls_out.ocsp = OCSP_NOT_REQ; | |
83b27293 JH |
1211 | # ifdef EXPERIMENTAL_DANE |
1212 | tls_out.dane_verified = FALSE; | |
1213 | # endif | |
a7538db1 | 1214 | #endif |
059ec3d9 PH |
1215 | } |
1216 | ||
1217 | ||
1218 | /* Soft failure, or local delivery process failed; freezing may be | |
1219 | requested. */ | |
1220 | ||
1221 | else if (result == DEFER || result == PANIC) | |
1222 | { | |
1223 | if (result == PANIC) logflags |= LOG_PANIC; | |
1224 | ||
1225 | /* This puts them on the chain in reverse order. Do not change this, because | |
1226 | the code for handling retries assumes that the one with the retry | |
1227 | information is last. */ | |
1228 | ||
1229 | addr->next = addr_defer; | |
1230 | addr_defer = addr; | |
1231 | ||
1232 | /* The only currently implemented special action is to freeze the | |
1233 | message. Logging of this is done later, just before the -H file is | |
1234 | updated. */ | |
1235 | ||
1236 | if (addr->special_action == SPECIAL_FREEZE) | |
1237 | { | |
1238 | deliver_freeze = TRUE; | |
1239 | deliver_frozen_at = time(NULL); | |
1240 | update_spool = TRUE; | |
1241 | } | |
1242 | ||
1243 | /* If doing a 2-stage queue run, we skip writing to either the message | |
1244 | log or the main log for SMTP defers. */ | |
1245 | ||
1246 | if (!queue_2stage || addr->basic_errno != 0) | |
1247 | { | |
1248 | uschar ss[32]; | |
1249 | ||
1250 | /* For errors of the type "retry time not reached" (also remotes skipped | |
1251 | on queue run), logging is controlled by L_retry_defer. Note that this kind | |
1252 | of error number is negative, and all the retry ones are less than any | |
1253 | others. */ | |
1254 | ||
d6c82d7b JH |
1255 | unsigned int use_log_selector = addr->basic_errno <= ERRNO_RETRY_BASE |
1256 | ? L_retry_defer : 0; | |
059ec3d9 PH |
1257 | |
1258 | /* Build up the line that is used for both the message log and the main | |
1259 | log. */ | |
1260 | ||
1261 | s = reset_point = store_get(size); | |
e4bdf652 JH |
1262 | |
1263 | /* Create the address string for logging. Must not do this earlier, because | |
1264 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1265 | ||
6c6d6e48 | 1266 | log_address = string_log_address(addr, LOGGING(all_parents), result == OK); |
e4bdf652 | 1267 | |
c2f669a4 | 1268 | s = string_cat(s, &size, &ptr, log_address); |
059ec3d9 PH |
1269 | |
1270 | /* Either driver_name contains something and driver_kind contains | |
1271 | " router" or " transport" (note the leading space), or driver_name is | |
1272 | a null string and driver_kind contains "routing" without the leading | |
1273 | space, if all routing has been deferred. When a domain has been held, | |
1274 | so nothing has been done at all, both variables contain null strings. */ | |
1275 | ||
d6c82d7b | 1276 | if (driver_name) |
059ec3d9 | 1277 | { |
d6c82d7b | 1278 | if (driver_kind[1] == 't' && addr->router) |
059ec3d9 PH |
1279 | s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name); |
1280 | Ustrcpy(ss, " ?="); | |
1281 | ss[1] = toupper(driver_kind[1]); | |
1282 | s = string_append(s, &size, &ptr, 2, ss, driver_name); | |
1283 | } | |
d6c82d7b JH |
1284 | else if (driver_kind) |
1285 | s = string_append(s, &size, &ptr, 2, US" ", driver_kind); | |
059ec3d9 PH |
1286 | |
1287 | sprintf(CS ss, " defer (%d)", addr->basic_errno); | |
c2f669a4 | 1288 | s = string_cat(s, &size, &ptr, ss); |
059ec3d9 PH |
1289 | |
1290 | if (addr->basic_errno > 0) | |
1291 | s = string_append(s, &size, &ptr, 2, US": ", | |
1292 | US strerror(addr->basic_errno)); | |
1293 | ||
c562fd30 | 1294 | if (addr->host_used) |
1a47b633 | 1295 | { |
c562fd30 JH |
1296 | s = string_append(s, &size, &ptr, 5, |
1297 | US" H=", addr->host_used->name, | |
1298 | US" [", addr->host_used->address, US"]"); | |
1a47b633 JH |
1299 | if (LOGGING(outgoing_port)) |
1300 | { | |
1301 | int port = addr->host_used->port; | |
1302 | s = string_append(s, &size, &ptr, 2, | |
1303 | US":", port == PORT_NONE ? US"25" : string_sprintf("%d", port)); | |
1304 | } | |
1305 | } | |
c562fd30 | 1306 | |
d6c82d7b | 1307 | if (addr->message) |
059ec3d9 PH |
1308 | s = string_append(s, &size, &ptr, 2, US": ", addr->message); |
1309 | ||
1310 | s[ptr] = 0; | |
1311 | ||
1312 | /* Log the deferment in the message log, but don't clutter it | |
1313 | up with retry-time defers after the first delivery attempt. */ | |
1314 | ||
1315 | if (deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE) | |
1316 | deliver_msglog("%s %s\n", now, s); | |
1317 | ||
1318 | /* Write the main log and reset the store */ | |
1319 | ||
1320 | log_write(use_log_selector, logflags, "== %s", s); | |
1321 | store_reset(reset_point); | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | ||
1326 | /* Hard failure. If there is an address to which an error message can be sent, | |
1327 | put this address on the failed list. If not, put it on the deferred list and | |
1328 | freeze the mail message for human attention. The latter action can also be | |
1329 | explicitly requested by a router or transport. */ | |
1330 | ||
1331 | else | |
1332 | { | |
1333 | /* If this is a delivery error, or a message for which no replies are | |
1334 | wanted, and the message's age is greater than ignore_bounce_errors_after, | |
1335 | force the af_ignore_error flag. This will cause the address to be discarded | |
1336 | later (with a log entry). */ | |
1337 | ||
1338 | if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after) | |
1339 | setflag(addr, af_ignore_error); | |
1340 | ||
1341 | /* Freeze the message if requested, or if this is a bounce message (or other | |
652e1b65 PH |
1342 | message with null sender) and this address does not have its own errors |
1343 | address. However, don't freeze if errors are being ignored. The actual code | |
1344 | to ignore occurs later, instead of sending a message. Logging of freezing | |
1345 | occurs later, just before writing the -H file. */ | |
059ec3d9 | 1346 | |
d6c82d7b JH |
1347 | if ( !testflag(addr, af_ignore_error) |
1348 | && ( addr->special_action == SPECIAL_FREEZE | |
1349 | || (sender_address[0] == 0 && !addr->prop.errors_address) | |
1350 | ) ) | |
059ec3d9 | 1351 | { |
d6c82d7b JH |
1352 | frozen_info = addr->special_action == SPECIAL_FREEZE |
1353 | ? US"" | |
1354 | : sender_local && !local_error_message | |
1355 | ? US" (message created with -f <>)" | |
1356 | : US" (delivery error message)"; | |
059ec3d9 PH |
1357 | deliver_freeze = TRUE; |
1358 | deliver_frozen_at = time(NULL); | |
1359 | update_spool = TRUE; | |
1360 | ||
1361 | /* The address is put on the defer rather than the failed queue, because | |
1362 | the message is being retained. */ | |
1363 | ||
1364 | addr->next = addr_defer; | |
1365 | addr_defer = addr; | |
1366 | } | |
1367 | ||
1368 | /* Don't put the address on the nonrecipients tree yet; wait until an | |
1369 | error message has been successfully sent. */ | |
1370 | ||
1371 | else | |
1372 | { | |
1373 | addr->next = addr_failed; | |
1374 | addr_failed = addr; | |
1375 | } | |
1376 | ||
1377 | /* Build up the log line for the message and main logs */ | |
1378 | ||
1379 | s = reset_point = store_get(size); | |
e4bdf652 JH |
1380 | |
1381 | /* Create the address string for logging. Must not do this earlier, because | |
1382 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1383 | ||
6c6d6e48 | 1384 | log_address = string_log_address(addr, LOGGING(all_parents), result == OK); |
e4bdf652 | 1385 | |
c2f669a4 | 1386 | s = string_cat(s, &size, &ptr, log_address); |
059ec3d9 | 1387 | |
6c6d6e48 | 1388 | if (LOGGING(sender_on_delivery)) |
059ec3d9 PH |
1389 | s = string_append(s, &size, &ptr, 3, US" F=<", sender_address, US">"); |
1390 | ||
1391 | /* Return path may not be set if no delivery actually happened */ | |
1392 | ||
d6c82d7b | 1393 | if (used_return_path && LOGGING(return_path_on_delivery)) |
059ec3d9 | 1394 | s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">"); |
059ec3d9 | 1395 | |
d6c82d7b | 1396 | if (addr->router) |
059ec3d9 | 1397 | s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name); |
d6c82d7b | 1398 | if (addr->transport) |
059ec3d9 PH |
1399 | s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name); |
1400 | ||
d6c82d7b | 1401 | if (addr->host_used) |
67d81c10 JH |
1402 | s = d_hostlog(s, &size, &ptr, addr); |
1403 | ||
a7538db1 | 1404 | #ifdef SUPPORT_TLS |
67d81c10 | 1405 | s = d_tlslog(s, &size, &ptr, addr); |
a7538db1 | 1406 | #endif |
059ec3d9 PH |
1407 | |
1408 | if (addr->basic_errno > 0) | |
1409 | s = string_append(s, &size, &ptr, 2, US": ", | |
1410 | US strerror(addr->basic_errno)); | |
1411 | ||
d6c82d7b | 1412 | if (addr->message) |
059ec3d9 PH |
1413 | s = string_append(s, &size, &ptr, 2, US": ", addr->message); |
1414 | ||
1415 | s[ptr] = 0; | |
1416 | ||
1417 | /* Do the logging. For the message log, "routing failed" for those cases, | |
1418 | just to make it clearer. */ | |
1419 | ||
d6c82d7b | 1420 | if (driver_name) |
059ec3d9 | 1421 | deliver_msglog("%s %s\n", now, s); |
d6c82d7b JH |
1422 | else |
1423 | deliver_msglog("%s %s failed for %s\n", now, driver_kind, s); | |
059ec3d9 PH |
1424 | |
1425 | log_write(0, LOG_MAIN, "** %s", s); | |
14a465c3 | 1426 | |
0cbf2b82 | 1427 | #ifndef DISABLE_EVENT |
774ef2d7 | 1428 | msg_event_raise(US"msg:fail:delivery", addr); |
14a465c3 JH |
1429 | #endif |
1430 | ||
059ec3d9 PH |
1431 | store_reset(reset_point); |
1432 | } | |
1433 | ||
1434 | /* Ensure logging is turned on again in all cases */ | |
1435 | ||
1436 | disable_logging = FALSE; | |
1437 | } | |
1438 | ||
1439 | ||
1440 | ||
1441 | ||
1442 | /************************************************* | |
1443 | * Address-independent error * | |
1444 | *************************************************/ | |
1445 | ||
1446 | /* This function is called when there's an error that is not dependent on a | |
1447 | particular address, such as an expansion string failure. It puts the error into | |
1448 | all the addresses in a batch, logs the incident on the main and panic logs, and | |
1449 | clears the expansions. It is mostly called from local_deliver(), but can be | |
1450 | called for a remote delivery via findugid(). | |
1451 | ||
1452 | Arguments: | |
1453 | logit TRUE if (MAIN+PANIC) logging required | |
1454 | addr the first of the chain of addresses | |
1455 | code the error code | |
1456 | format format string for error message, or NULL if already set in addr | |
1457 | ... arguments for the format | |
1458 | ||
1459 | Returns: nothing | |
1460 | */ | |
1461 | ||
1462 | static void | |
1463 | common_error(BOOL logit, address_item *addr, int code, uschar *format, ...) | |
1464 | { | |
1465 | address_item *addr2; | |
1466 | addr->basic_errno = code; | |
1467 | ||
d6c82d7b | 1468 | if (format) |
059ec3d9 PH |
1469 | { |
1470 | va_list ap; | |
1471 | uschar buffer[512]; | |
1472 | va_start(ap, format); | |
1473 | if (!string_vformat(buffer, sizeof(buffer), CS format, ap)) | |
1474 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
81f91683 | 1475 | "common_error expansion was longer than " SIZE_T_FMT, sizeof(buffer)); |
059ec3d9 PH |
1476 | va_end(ap); |
1477 | addr->message = string_copy(buffer); | |
1478 | } | |
1479 | ||
d6c82d7b | 1480 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 PH |
1481 | { |
1482 | addr2->basic_errno = code; | |
1483 | addr2->message = addr->message; | |
1484 | } | |
1485 | ||
1486 | if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message); | |
1487 | deliver_set_expansions(NULL); | |
1488 | } | |
1489 | ||
1490 | ||
1491 | ||
1492 | ||
1493 | /************************************************* | |
1494 | * Check a "never users" list * | |
1495 | *************************************************/ | |
1496 | ||
1497 | /* This function is called to check whether a uid is on one of the two "never | |
1498 | users" lists. | |
1499 | ||
1500 | Arguments: | |
1501 | uid the uid to be checked | |
1502 | nusers the list to be scanned; the first item in the list is the count | |
1503 | ||
1504 | Returns: TRUE if the uid is on the list | |
1505 | */ | |
1506 | ||
1507 | static BOOL | |
1508 | check_never_users(uid_t uid, uid_t *nusers) | |
1509 | { | |
1510 | int i; | |
d6c82d7b | 1511 | if (!nusers) return FALSE; |
059ec3d9 PH |
1512 | for (i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE; |
1513 | return FALSE; | |
1514 | } | |
1515 | ||
1516 | ||
1517 | ||
1518 | /************************************************* | |
1519 | * Find uid and gid for a transport * | |
1520 | *************************************************/ | |
1521 | ||
1522 | /* This function is called for both local and remote deliveries, to find the | |
1523 | uid/gid under which to run the delivery. The values are taken preferentially | |
1524 | from the transport (either explicit or deliver_as_creator), then from the | |
1525 | address (i.e. the router), and if nothing is set, the exim uid/gid are used. If | |
1526 | the resulting uid is on the "never_users" or the "fixed_never_users" list, a | |
1527 | panic error is logged, and the function fails (which normally leads to delivery | |
1528 | deferral). | |
1529 | ||
1530 | Arguments: | |
1531 | addr the address (possibly a chain) | |
1532 | tp the transport | |
1533 | uidp pointer to uid field | |
1534 | gidp pointer to gid field | |
1535 | igfp pointer to the use_initgroups field | |
1536 | ||
1537 | Returns: FALSE if failed - error has been set in address(es) | |
1538 | */ | |
1539 | ||
1540 | static BOOL | |
1541 | findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp, | |
1542 | BOOL *igfp) | |
1543 | { | |
d6c82d7b | 1544 | uschar *nuname; |
059ec3d9 PH |
1545 | BOOL gid_set = FALSE; |
1546 | ||
1547 | /* Default initgroups flag comes from the transport */ | |
1548 | ||
1549 | *igfp = tp->initgroups; | |
1550 | ||
1551 | /* First see if there's a gid on the transport, either fixed or expandable. | |
1552 | The expanding function always logs failure itself. */ | |
1553 | ||
1554 | if (tp->gid_set) | |
1555 | { | |
1556 | *gidp = tp->gid; | |
1557 | gid_set = TRUE; | |
1558 | } | |
d6c82d7b | 1559 | else if (tp->expand_gid) |
059ec3d9 | 1560 | { |
d6c82d7b JH |
1561 | if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp, |
1562 | &(addr->message))) | |
059ec3d9 PH |
1563 | { |
1564 | common_error(FALSE, addr, ERRNO_GIDFAIL, NULL); | |
1565 | return FALSE; | |
1566 | } | |
d6c82d7b | 1567 | gid_set = TRUE; |
059ec3d9 PH |
1568 | } |
1569 | ||
911f6fde PH |
1570 | /* If the transport did not set a group, see if the router did. */ |
1571 | ||
1572 | if (!gid_set && testflag(addr, af_gid_set)) | |
1573 | { | |
1574 | *gidp = addr->gid; | |
1575 | gid_set = TRUE; | |
1576 | } | |
1577 | ||
059ec3d9 PH |
1578 | /* Pick up a uid from the transport if one is set. */ |
1579 | ||
1580 | if (tp->uid_set) *uidp = tp->uid; | |
1581 | ||
1582 | /* Otherwise, try for an expandable uid field. If it ends up as a numeric id, | |
1583 | it does not provide a passwd value from which a gid can be taken. */ | |
1584 | ||
d6c82d7b | 1585 | else if (tp->expand_uid) |
059ec3d9 PH |
1586 | { |
1587 | struct passwd *pw; | |
1588 | if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw, | |
1589 | uidp, &(addr->message))) | |
1590 | { | |
1591 | common_error(FALSE, addr, ERRNO_UIDFAIL, NULL); | |
1592 | return FALSE; | |
1593 | } | |
d6c82d7b | 1594 | if (!gid_set && pw) |
059ec3d9 PH |
1595 | { |
1596 | *gidp = pw->pw_gid; | |
1597 | gid_set = TRUE; | |
1598 | } | |
1599 | } | |
1600 | ||
1601 | /* If the transport doesn't set the uid, test the deliver_as_creator flag. */ | |
1602 | ||
1603 | else if (tp->deliver_as_creator) | |
1604 | { | |
1605 | *uidp = originator_uid; | |
1606 | if (!gid_set) | |
1607 | { | |
1608 | *gidp = originator_gid; | |
1609 | gid_set = TRUE; | |
1610 | } | |
1611 | } | |
1612 | ||
911f6fde PH |
1613 | /* Otherwise see if the address specifies the uid and if so, take it and its |
1614 | initgroups flag. */ | |
059ec3d9 PH |
1615 | |
1616 | else if (testflag(addr, af_uid_set)) | |
1617 | { | |
1618 | *uidp = addr->uid; | |
1619 | *igfp = testflag(addr, af_initgroups); | |
059ec3d9 PH |
1620 | } |
1621 | ||
1622 | /* Nothing has specified the uid - default to the Exim user, and group if the | |
1623 | gid is not set. */ | |
1624 | ||
1625 | else | |
1626 | { | |
1627 | *uidp = exim_uid; | |
1628 | if (!gid_set) | |
1629 | { | |
1630 | *gidp = exim_gid; | |
1631 | gid_set = TRUE; | |
1632 | } | |
1633 | } | |
1634 | ||
911f6fde PH |
1635 | /* If no gid is set, it is a disaster. We default to the Exim gid only if |
1636 | defaulting to the Exim uid. In other words, if the configuration has specified | |
1637 | a uid, it must also provide a gid. */ | |
059ec3d9 PH |
1638 | |
1639 | if (!gid_set) | |
1640 | { | |
1641 | common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for " | |
1642 | "%s transport", tp->name); | |
1643 | return FALSE; | |
1644 | } | |
1645 | ||
1646 | /* Check that the uid is not on the lists of banned uids that may not be used | |
1647 | for delivery processes. */ | |
1648 | ||
d6c82d7b JH |
1649 | nuname = check_never_users(*uidp, never_users) |
1650 | ? US"never_users" | |
1651 | : check_never_users(*uidp, fixed_never_users) | |
1652 | ? US"fixed_never_users" | |
1653 | : NULL; | |
1654 | if (nuname) | |
059ec3d9 PH |
1655 | { |
1656 | common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport " | |
1657 | "is on the %s list", (long int)(*uidp), tp->name, nuname); | |
1658 | return FALSE; | |
1659 | } | |
1660 | ||
1661 | /* All is well */ | |
1662 | ||
1663 | return TRUE; | |
1664 | } | |
1665 | ||
1666 | ||
1667 | ||
1668 | ||
1669 | /************************************************* | |
1670 | * Check the size of a message for a transport * | |
1671 | *************************************************/ | |
1672 | ||
1673 | /* Checks that the message isn't too big for the selected transport. | |
1674 | This is called only when it is known that the limit is set. | |
1675 | ||
1676 | Arguments: | |
1677 | tp the transport | |
1678 | addr the (first) address being delivered | |
1679 | ||
1680 | Returns: OK | |
1681 | DEFER expansion failed or did not yield an integer | |
1682 | FAIL message too big | |
1683 | */ | |
1684 | ||
1685 | int | |
1686 | check_message_size(transport_instance *tp, address_item *addr) | |
1687 | { | |
1688 | int rc = OK; | |
1689 | int size_limit; | |
1690 | ||
1691 | deliver_set_expansions(addr); | |
d45b1de8 | 1692 | size_limit = expand_string_integer(tp->message_size_limit, TRUE); |
059ec3d9 PH |
1693 | deliver_set_expansions(NULL); |
1694 | ||
d6c82d7b | 1695 | if (expand_string_message) |
059ec3d9 PH |
1696 | { |
1697 | rc = DEFER; | |
d6c82d7b JH |
1698 | addr->message = size_limit == -1 |
1699 | ? string_sprintf("failed to expand message_size_limit " | |
1700 | "in %s transport: %s", tp->name, expand_string_message) | |
1701 | : string_sprintf("invalid message_size_limit " | |
059ec3d9 PH |
1702 | "in %s transport: %s", tp->name, expand_string_message); |
1703 | } | |
1704 | else if (size_limit > 0 && message_size > size_limit) | |
1705 | { | |
1706 | rc = FAIL; | |
1707 | addr->message = | |
1708 | string_sprintf("message is too big (transport limit = %d)", | |
1709 | size_limit); | |
1710 | } | |
1711 | ||
1712 | return rc; | |
1713 | } | |
1714 | ||
1715 | ||
1716 | ||
1717 | /************************************************* | |
1718 | * Transport-time check for a previous delivery * | |
1719 | *************************************************/ | |
1720 | ||
1721 | /* Check that this base address hasn't previously been delivered to its routed | |
c2c19e9d PH |
1722 | transport. If it has been delivered, mark it done. The check is necessary at |
1723 | delivery time in order to handle homonymic addresses correctly in cases where | |
1724 | the pattern of redirection changes between delivery attempts (so the unique | |
1725 | fields change). Non-homonymic previous delivery is detected earlier, at routing | |
1726 | time (which saves unnecessary routing). | |
1727 | ||
1728 | Arguments: | |
1729 | addr the address item | |
1730 | testing TRUE if testing wanted only, without side effects | |
059ec3d9 | 1731 | |
059ec3d9 PH |
1732 | Returns: TRUE if previously delivered by the transport |
1733 | */ | |
1734 | ||
1735 | static BOOL | |
c2c19e9d | 1736 | previously_transported(address_item *addr, BOOL testing) |
059ec3d9 PH |
1737 | { |
1738 | (void)string_format(big_buffer, big_buffer_size, "%s/%s", | |
1739 | addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name); | |
1740 | ||
1741 | if (tree_search(tree_nonrecipients, big_buffer) != 0) | |
1742 | { | |
1743 | DEBUG(D_deliver|D_route|D_transport) | |
1744 | debug_printf("%s was previously delivered (%s transport): discarded\n", | |
1745 | addr->address, addr->transport->name); | |
c2c19e9d | 1746 | if (!testing) child_done(addr, tod_stamp(tod_log)); |
059ec3d9 PH |
1747 | return TRUE; |
1748 | } | |
1749 | ||
1750 | return FALSE; | |
1751 | } | |
1752 | ||
1753 | ||
1754 | ||
064a94c9 PH |
1755 | /****************************************************** |
1756 | * Check for a given header in a header string * | |
1757 | ******************************************************/ | |
1758 | ||
1759 | /* This function is used when generating quota warnings. The configuration may | |
1760 | specify any header lines it likes in quota_warn_message. If certain of them are | |
1761 | missing, defaults are inserted, so we need to be able to test for the presence | |
1762 | of a given header. | |
1763 | ||
1764 | Arguments: | |
1765 | hdr the required header name | |
1766 | hstring the header string | |
1767 | ||
1768 | Returns: TRUE the header is in the string | |
1769 | FALSE the header is not in the string | |
1770 | */ | |
1771 | ||
1772 | static BOOL | |
1773 | contains_header(uschar *hdr, uschar *hstring) | |
1774 | { | |
1775 | int len = Ustrlen(hdr); | |
1776 | uschar *p = hstring; | |
1777 | while (*p != 0) | |
1778 | { | |
1779 | if (strncmpic(p, hdr, len) == 0) | |
1780 | { | |
1781 | p += len; | |
1782 | while (*p == ' ' || *p == '\t') p++; | |
1783 | if (*p == ':') return TRUE; | |
1784 | } | |
1785 | while (*p != 0 && *p != '\n') p++; | |
1786 | if (*p == '\n') p++; | |
1787 | } | |
1788 | return FALSE; | |
1789 | } | |
1790 | ||
1791 | ||
1792 | ||
059ec3d9 PH |
1793 | |
1794 | /************************************************* | |
1795 | * Perform a local delivery * | |
1796 | *************************************************/ | |
1797 | ||
1798 | /* Each local delivery is performed in a separate process which sets its | |
1799 | uid and gid as specified. This is a safer way than simply changing and | |
1800 | restoring using seteuid(); there is a body of opinion that seteuid() cannot be | |
1801 | used safely. From release 4, Exim no longer makes any use of it. Besides, not | |
1802 | all systems have seteuid(). | |
1803 | ||
1804 | If the uid/gid are specified in the transport_instance, they are used; the | |
1805 | transport initialization must ensure that either both or neither are set. | |
1806 | Otherwise, the values associated with the address are used. If neither are set, | |
1807 | it is a configuration error. | |
1808 | ||
1809 | The transport or the address may specify a home directory (transport over- | |
1810 | rides), and if they do, this is set as $home. If neither have set a working | |
1811 | directory, this value is used for that as well. Otherwise $home is left unset | |
1812 | and the cwd is set to "/" - a directory that should be accessible to all users. | |
1813 | ||
1814 | Using a separate process makes it more complicated to get error information | |
1815 | back. We use a pipe to pass the return code and also an error code and error | |
1816 | text string back to the parent process. | |
1817 | ||
1818 | Arguments: | |
1819 | addr points to an address block for this delivery; for "normal" local | |
1820 | deliveries this is the only address to be delivered, but for | |
1821 | pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe) | |
1822 | a number of addresses can be handled simultaneously, and in this | |
1823 | case addr will point to a chain of addresses with the same | |
1824 | characteristics. | |
1825 | ||
1826 | shadowing TRUE if running a shadow transport; this causes output from pipes | |
1827 | to be ignored. | |
1828 | ||
1829 | Returns: nothing | |
1830 | */ | |
1831 | ||
1832 | static void | |
1833 | deliver_local(address_item *addr, BOOL shadowing) | |
1834 | { | |
1835 | BOOL use_initgroups; | |
1836 | uid_t uid; | |
1837 | gid_t gid; | |
1838 | int status, len, rc; | |
1839 | int pfd[2]; | |
1840 | pid_t pid; | |
1841 | uschar *working_directory; | |
1842 | address_item *addr2; | |
1843 | transport_instance *tp = addr->transport; | |
1844 | ||
1845 | /* Set up the return path from the errors or sender address. If the transport | |
1846 | has its own return path setting, expand it and replace the existing value. */ | |
1847 | ||
d6c82d7b | 1848 | if(addr->prop.errors_address) |
d43cbe25 | 1849 | return_path = addr->prop.errors_address; |
384152a6 | 1850 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 1851 | else if (addr->prop.srs_sender) |
d43cbe25 | 1852 | return_path = addr->prop.srs_sender; |
384152a6 TK |
1853 | #endif |
1854 | else | |
1855 | return_path = sender_address; | |
059ec3d9 | 1856 | |
d6c82d7b | 1857 | if (tp->return_path) |
059ec3d9 PH |
1858 | { |
1859 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b | 1860 | if (!new_return_path) |
059ec3d9 PH |
1861 | { |
1862 | if (!expand_string_forcedfail) | |
1863 | { | |
1864 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, | |
1865 | US"Failed to expand return path \"%s\" in %s transport: %s", | |
1866 | tp->return_path, tp->name, expand_string_message); | |
1867 | return; | |
1868 | } | |
1869 | } | |
1870 | else return_path = new_return_path; | |
1871 | } | |
1872 | ||
1873 | /* For local deliveries, one at a time, the value used for logging can just be | |
1874 | set directly, once and for all. */ | |
1875 | ||
1876 | used_return_path = return_path; | |
1877 | ||
1878 | /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message | |
1879 | gets put into the address(es), and the expansions are unset, so we can just | |
1880 | return. */ | |
1881 | ||
1882 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return; | |
1883 | ||
5418e93b PH |
1884 | /* See if either the transport or the address specifies a home directory. A |
1885 | home directory set in the address may already be expanded; a flag is set to | |
1886 | indicate that. In other cases we must expand it. */ | |
059ec3d9 | 1887 | |
d6c82d7b JH |
1888 | if ( (deliver_home = tp->home_dir) /* Set in transport, or */ |
1889 | || ( (deliver_home = addr->home_dir) /* Set in address and */ | |
1890 | && !testflag(addr, af_home_expanded) /* not expanded */ | |
1891 | ) ) | |
059ec3d9 PH |
1892 | { |
1893 | uschar *rawhome = deliver_home; | |
1894 | deliver_home = NULL; /* in case it contains $home */ | |
d6c82d7b | 1895 | if (!(deliver_home = expand_string(rawhome))) |
059ec3d9 PH |
1896 | { |
1897 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed " | |
1898 | "to expand for %s transport: %s", rawhome, tp->name, | |
1899 | expand_string_message); | |
1900 | return; | |
1901 | } | |
1902 | if (*deliver_home != '/') | |
1903 | { | |
1904 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" " | |
1905 | "is not absolute for %s transport", deliver_home, tp->name); | |
1906 | return; | |
1907 | } | |
1908 | } | |
1909 | ||
5418e93b PH |
1910 | /* See if either the transport or the address specifies a current directory, |
1911 | and if so, expand it. If nothing is set, use the home directory, unless it is | |
1912 | also unset in which case use "/", which is assumed to be a directory to which | |
1913 | all users have access. It is necessary to be in a visible directory for some | |
1914 | operating systems when running pipes, as some commands (e.g. "rm" under Solaris | |
1915 | 2.5) require this. */ | |
1916 | ||
d6c82d7b JH |
1917 | working_directory = tp->current_dir ? tp->current_dir : addr->current_dir; |
1918 | if (working_directory) | |
059ec3d9 PH |
1919 | { |
1920 | uschar *raw = working_directory; | |
d6c82d7b | 1921 | if (!(working_directory = expand_string(raw))) |
059ec3d9 PH |
1922 | { |
1923 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" " | |
1924 | "failed to expand for %s transport: %s", raw, tp->name, | |
1925 | expand_string_message); | |
1926 | return; | |
1927 | } | |
1928 | if (*working_directory != '/') | |
1929 | { | |
1930 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path " | |
1931 | "\"%s\" is not absolute for %s transport", working_directory, tp->name); | |
1932 | return; | |
1933 | } | |
1934 | } | |
d6c82d7b | 1935 | else working_directory = deliver_home ? deliver_home : US"/"; |
059ec3d9 PH |
1936 | |
1937 | /* If one of the return_output flags is set on the transport, create and open a | |
1938 | file in the message log directory for the transport to write its output onto. | |
1939 | This is mainly used by pipe transports. The file needs to be unique to the | |
1940 | address. This feature is not available for shadow transports. */ | |
1941 | ||
d6c82d7b JH |
1942 | if ( !shadowing |
1943 | && ( tp->return_output || tp->return_fail_output | |
ec0eb1a3 | 1944 | || tp->log_output || tp->log_fail_output || tp->log_defer_output |
d6c82d7b | 1945 | ) ) |
059ec3d9 PH |
1946 | { |
1947 | uschar *error; | |
1948 | addr->return_filename = | |
a2da3176 JH |
1949 | string_sprintf("%s/msglog/%s/%s/%s-%d-%d", |
1950 | spool_directory, queue_name, message_subdir, | |
059ec3d9 PH |
1951 | message_id, getpid(), return_count++); |
1952 | addr->return_file = open_msglog_file(addr->return_filename, 0400, &error); | |
1953 | if (addr->return_file < 0) | |
1954 | { | |
1955 | common_error(TRUE, addr, errno, US"Unable to %s file for %s transport " | |
1956 | "to return message: %s", error, tp->name, strerror(errno)); | |
1957 | return; | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | /* Create the pipe for inter-process communication. */ | |
1962 | ||
1963 | if (pipe(pfd) != 0) | |
1964 | { | |
1965 | common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s", | |
1966 | strerror(errno)); | |
1967 | return; | |
1968 | } | |
1969 | ||
1970 | /* Now fork the process to do the real work in the subprocess, but first | |
1971 | ensure that all cached resources are freed so that the subprocess starts with | |
1972 | a clean slate and doesn't interfere with the parent process. */ | |
1973 | ||
1974 | search_tidyup(); | |
1975 | ||
1976 | if ((pid = fork()) == 0) | |
1977 | { | |
1978 | BOOL replicate = TRUE; | |
1979 | ||
1980 | /* Prevent core dumps, as we don't want them in users' home directories. | |
1981 | HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that | |
1982 | system. Some experimental/developing systems (e.g. GNU/Hurd) may define | |
1983 | RLIMIT_CORE but not support it in setrlimit(). For such systems, do not | |
a29e5231 PP |
1984 | complain if the error is "not supported". |
1985 | ||
1986 | There are two scenarios where changing the max limit has an effect. In one, | |
1987 | the user is using a .forward and invoking a command of their choice via pipe; | |
1988 | for these, we do need the max limit to be 0 unless the admin chooses to | |
1989 | permit an increased limit. In the other, the command is invoked directly by | |
1990 | the transport and is under administrator control, thus being able to raise | |
1991 | the limit aids in debugging. So there's no general always-right answer. | |
1992 | ||
1993 | Thus we inhibit core-dumps completely but let individual transports, while | |
1994 | still root, re-raise the limits back up to aid debugging. We make the | |
1995 | default be no core-dumps -- few enough people can use core dumps in | |
1996 | diagnosis that it's reasonable to make them something that has to be explicitly requested. | |
1997 | */ | |
059ec3d9 | 1998 | |
a7538db1 | 1999 | #ifdef RLIMIT_CORE |
059ec3d9 PH |
2000 | struct rlimit rl; |
2001 | rl.rlim_cur = 0; | |
2002 | rl.rlim_max = 0; | |
2003 | if (setrlimit(RLIMIT_CORE, &rl) < 0) | |
2004 | { | |
a7538db1 | 2005 | # ifdef SETRLIMIT_NOT_SUPPORTED |
059ec3d9 | 2006 | if (errno != ENOSYS && errno != ENOTSUP) |
a7538db1 | 2007 | # endif |
059ec3d9 PH |
2008 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s", |
2009 | strerror(errno)); | |
2010 | } | |
a7538db1 | 2011 | #endif |
059ec3d9 PH |
2012 | |
2013 | /* Reset the random number generator, so different processes don't all | |
2014 | have the same sequence. */ | |
2015 | ||
2016 | random_seed = 0; | |
2017 | ||
2018 | /* If the transport has a setup entry, call this first, while still | |
2019 | privileged. (Appendfile uses this to expand quota, for example, while | |
2020 | able to read private files.) */ | |
2021 | ||
d6c82d7b | 2022 | if (addr->transport->setup) |
929ba01c | 2023 | switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid, |
059ec3d9 PH |
2024 | &(addr->message))) |
2025 | { | |
2026 | case DEFER: | |
d6c82d7b JH |
2027 | addr->transport_return = DEFER; |
2028 | goto PASS_BACK; | |
059ec3d9 PH |
2029 | |
2030 | case FAIL: | |
d6c82d7b JH |
2031 | addr->transport_return = PANIC; |
2032 | goto PASS_BACK; | |
059ec3d9 | 2033 | } |
059ec3d9 PH |
2034 | |
2035 | /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as | |
2036 | when the process becomes unprivileged, it won't be able to write to the | |
2037 | process log. SIGHUP is ignored throughout exim, except when it is being | |
2038 | run as a daemon. */ | |
2039 | ||
2040 | signal(SIGINT, SIG_IGN); | |
2041 | signal(SIGTERM, SIG_IGN); | |
2042 | signal(SIGUSR1, SIG_IGN); | |
2043 | ||
2044 | /* Close the unwanted half of the pipe, and set close-on-exec for the other | |
2045 | half - for transports that exec things (e.g. pipe). Then set the required | |
2046 | gid/uid. */ | |
2047 | ||
f1e894f3 | 2048 | (void)close(pfd[pipe_read]); |
ff790e47 | 2049 | (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) | |
059ec3d9 PH |
2050 | FD_CLOEXEC); |
2051 | exim_setugid(uid, gid, use_initgroups, | |
2052 | string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part, | |
2053 | addr->address, addr->transport->name)); | |
2054 | ||
2055 | DEBUG(D_deliver) | |
2056 | { | |
2057 | address_item *batched; | |
2058 | debug_printf(" home=%s current=%s\n", deliver_home, working_directory); | |
d6c82d7b | 2059 | for (batched = addr->next; batched; batched = batched->next) |
059ec3d9 PH |
2060 | debug_printf("additional batched address: %s\n", batched->address); |
2061 | } | |
2062 | ||
2063 | /* Set an appropriate working directory. */ | |
2064 | ||
2065 | if (Uchdir(working_directory) < 0) | |
2066 | { | |
2067 | addr->transport_return = DEFER; | |
2068 | addr->basic_errno = errno; | |
2069 | addr->message = string_sprintf("failed to chdir to %s", working_directory); | |
2070 | } | |
2071 | ||
2072 | /* If successful, call the transport */ | |
2073 | ||
2074 | else | |
2075 | { | |
2076 | BOOL ok = TRUE; | |
2077 | set_process_info("delivering %s to %s using %s", message_id, | |
2078 | addr->local_part, addr->transport->name); | |
2079 | ||
2a47f028 JH |
2080 | /* Setting this global in the subprocess means we need never clear it */ |
2081 | transport_name = addr->transport->name; | |
2082 | ||
059ec3d9 PH |
2083 | /* If a transport filter has been specified, set up its argument list. |
2084 | Any errors will get put into the address, and FALSE yielded. */ | |
2085 | ||
d6c82d7b | 2086 | if (addr->transport->filter_command) |
059ec3d9 PH |
2087 | { |
2088 | ok = transport_set_up_command(&transport_filter_argv, | |
2089 | addr->transport->filter_command, | |
2090 | TRUE, PANIC, addr, US"transport filter", NULL); | |
2091 | transport_filter_timeout = addr->transport->filter_timeout; | |
2092 | } | |
2093 | else transport_filter_argv = NULL; | |
2094 | ||
2095 | if (ok) | |
2096 | { | |
2097 | debug_print_string(addr->transport->debug_string); | |
2098 | replicate = !(addr->transport->info->code)(addr->transport, addr); | |
2099 | } | |
2100 | } | |
2101 | ||
2102 | /* Pass the results back down the pipe. If necessary, first replicate the | |
2103 | status in the top address to the others in the batch. The label is the | |
2104 | subject of a goto when a call to the transport's setup function fails. We | |
2105 | pass the pointer to the transport back in case it got changed as a result of | |
2106 | file_format in appendfile. */ | |
2107 | ||
2108 | PASS_BACK: | |
2109 | ||
2110 | if (replicate) replicate_status(addr); | |
d6c82d7b | 2111 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 PH |
2112 | { |
2113 | int i; | |
2114 | int local_part_length = Ustrlen(addr2->local_part); | |
2115 | uschar *s; | |
1ac6b2e7 | 2116 | int ret; |
059ec3d9 | 2117 | |
d6c82d7b JH |
2118 | if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int) |
2119 | || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count) | |
2120 | || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags) | |
2121 | || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int) | |
2122 | || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int) | |
2123 | || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int) | |
2124 | || (ret = write(pfd[pipe_write], &addr2->transport, | |
1ac6b2e7 | 2125 | sizeof(transport_instance *))) != sizeof(transport_instance *) |
059ec3d9 PH |
2126 | |
2127 | /* For a file delivery, pass back the local part, in case the original | |
2128 | was only part of the final delivery path. This gives more complete | |
2129 | logging. */ | |
2130 | ||
1ac6b2e7 | 2131 | || (testflag(addr2, af_file) |
d6c82d7b | 2132 | && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int) |
1ac6b2e7 JH |
2133 | || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length |
2134 | ) | |
2135 | ) | |
2136 | ) | |
2137 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n", | |
2138 | ret == -1 ? strerror(errno) : "short write"); | |
059ec3d9 PH |
2139 | |
2140 | /* Now any messages */ | |
2141 | ||
2142 | for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message) | |
2143 | { | |
d6c82d7b JH |
2144 | int message_length = s ? Ustrlen(s) + 1 : 0; |
2145 | if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int) | |
2146 | || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length | |
1ac6b2e7 JH |
2147 | ) |
2148 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n", | |
2149 | ret == -1 ? strerror(errno) : "short write"); | |
059ec3d9 PH |
2150 | } |
2151 | } | |
2152 | ||
2153 | /* OK, this process is now done. Free any cached resources that it opened, | |
2154 | and close the pipe we were writing down before exiting. */ | |
2155 | ||
f1e894f3 | 2156 | (void)close(pfd[pipe_write]); |
059ec3d9 PH |
2157 | search_tidyup(); |
2158 | exit(EXIT_SUCCESS); | |
2159 | } | |
2160 | ||
2161 | /* Back in the main process: panic if the fork did not succeed. This seems | |
2162 | better than returning an error - if forking is failing it is probably best | |
2163 | not to try other deliveries for this message. */ | |
2164 | ||
2165 | if (pid < 0) | |
2166 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s", | |
2167 | addr->address); | |
2168 | ||
2169 | /* Read the pipe to get the delivery status codes and error messages. Our copy | |
2170 | of the writing end must be closed first, as otherwise read() won't return zero | |
2171 | on an empty pipe. We check that a status exists for each address before | |
2172 | overwriting the address structure. If data is missing, the default DEFER status | |
2173 | will remain. Afterwards, close the reading end. */ | |
2174 | ||
f1e894f3 | 2175 | (void)close(pfd[pipe_write]); |
059ec3d9 | 2176 | |
d6c82d7b | 2177 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 | 2178 | { |
d6c82d7b | 2179 | len = read(pfd[pipe_read], &status, sizeof(int)); |
059ec3d9 PH |
2180 | if (len > 0) |
2181 | { | |
2182 | int i; | |
2183 | uschar **sptr; | |
2184 | ||
2185 | addr2->transport_return = status; | |
d6c82d7b | 2186 | len = read(pfd[pipe_read], &transport_count, |
059ec3d9 | 2187 | sizeof(transport_count)); |
d6c82d7b JH |
2188 | len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags)); |
2189 | len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int)); | |
2190 | len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int)); | |
2191 | len = read(pfd[pipe_read], &addr2->special_action, sizeof(int)); | |
2192 | len = read(pfd[pipe_read], &addr2->transport, | |
059ec3d9 PH |
2193 | sizeof(transport_instance *)); |
2194 | ||
2195 | if (testflag(addr2, af_file)) | |
2196 | { | |
2197 | int local_part_length; | |
d6c82d7b JH |
2198 | len = read(pfd[pipe_read], &local_part_length, sizeof(int)); |
2199 | len = read(pfd[pipe_read], big_buffer, local_part_length); | |
059ec3d9 PH |
2200 | big_buffer[local_part_length] = 0; |
2201 | addr2->local_part = string_copy(big_buffer); | |
2202 | } | |
2203 | ||
d6c82d7b | 2204 | for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message) |
059ec3d9 PH |
2205 | { |
2206 | int message_length; | |
d6c82d7b | 2207 | len = read(pfd[pipe_read], &message_length, sizeof(int)); |
059ec3d9 PH |
2208 | if (message_length > 0) |
2209 | { | |
d6c82d7b | 2210 | len = read(pfd[pipe_read], big_buffer, message_length); |
dc8091e7 | 2211 | big_buffer[big_buffer_size-1] = '\0'; /* guard byte */ |
059ec3d9 PH |
2212 | if (len > 0) *sptr = string_copy(big_buffer); |
2213 | } | |
2214 | } | |
2215 | } | |
2216 | ||
2217 | else | |
2218 | { | |
2219 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s " | |
2220 | "from delivery subprocess", addr2->unique); | |
2221 | break; | |
2222 | } | |
2223 | } | |
2224 | ||
f1e894f3 | 2225 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
2226 | |
2227 | /* Unless shadowing, write all successful addresses immediately to the journal | |
2228 | file, to ensure they are recorded asap. For homonymic addresses, use the base | |
2229 | address plus the transport name. Failure to write the journal is panic-worthy, | |
2230 | but don't stop, as it may prove possible subsequently to update the spool file | |
2231 | in order to record the delivery. */ | |
2232 | ||
2233 | if (!shadowing) | |
2234 | { | |
d6c82d7b JH |
2235 | for (addr2 = addr; addr2; addr2 = addr2->next) |
2236 | if (addr2->transport_return == OK) | |
2237 | { | |
2238 | if (testflag(addr2, af_homonym)) | |
2239 | sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name); | |
2240 | else | |
2241 | sprintf(CS big_buffer, "%.500s\n", addr2->unique); | |
059ec3d9 | 2242 | |
d6c82d7b JH |
2243 | /* In the test harness, wait just a bit to let the subprocess finish off |
2244 | any debug output etc first. */ | |
059ec3d9 | 2245 | |
d6c82d7b | 2246 | if (running_in_test_harness) millisleep(300); |
059ec3d9 | 2247 | |
d6c82d7b JH |
2248 | DEBUG(D_deliver) debug_printf("journalling %s", big_buffer); |
2249 | len = Ustrlen(big_buffer); | |
2250 | if (write(journal_fd, big_buffer, len) != len) | |
2251 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s", | |
2252 | big_buffer, strerror(errno)); | |
2253 | } | |
059ec3d9 PH |
2254 | |
2255 | /* Ensure the journal file is pushed out to disk. */ | |
2256 | ||
54fc8428 | 2257 | if (EXIMfsync(journal_fd) < 0) |
059ec3d9 PH |
2258 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s", |
2259 | strerror(errno)); | |
2260 | } | |
2261 | ||
2262 | /* Wait for the process to finish. If it terminates with a non-zero code, | |
2263 | freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the | |
2264 | status values of all the addresses as they are. Take care to handle the case | |
2265 | when the subprocess doesn't seem to exist. This has been seen on one system | |
2266 | when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that | |
2267 | happens, wait() doesn't recognize the termination of child processes. Exim now | |
2268 | resets SIGCHLD to SIG_DFL, but this code should still be robust. */ | |
2269 | ||
2270 | while ((rc = wait(&status)) != pid) | |
059ec3d9 PH |
2271 | if (rc < 0 && errno == ECHILD) /* Process has vanished */ |
2272 | { | |
2273 | log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly", | |
2274 | addr->transport->driver_name); | |
2275 | status = 0; | |
2276 | break; | |
2277 | } | |
059ec3d9 PH |
2278 | |
2279 | if ((status & 0xffff) != 0) | |
2280 | { | |
2281 | int msb = (status >> 8) & 255; | |
2282 | int lsb = status & 255; | |
2283 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
2284 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
2285 | addr->special_action = SPECIAL_FREEZE; | |
2286 | log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero " | |
2287 | "status 0x%04x: %s %d", | |
2288 | addr->transport->driver_name, | |
2289 | status, | |
d6c82d7b | 2290 | msb == 0 ? "terminated by signal" : "exit code", |
059ec3d9 PH |
2291 | code); |
2292 | } | |
2293 | ||
2294 | /* If SPECIAL_WARN is set in the top address, send a warning message. */ | |
2295 | ||
d6c82d7b | 2296 | if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message) |
059ec3d9 PH |
2297 | { |
2298 | int fd; | |
2299 | uschar *warn_message; | |
d6c82d7b | 2300 | pid_t pid; |
059ec3d9 PH |
2301 | |
2302 | DEBUG(D_deliver) debug_printf("Warning message requested by transport\n"); | |
2303 | ||
d6c82d7b | 2304 | if (!(warn_message = expand_string(addr->transport->warn_message))) |
059ec3d9 PH |
2305 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning " |
2306 | "message for %s transport): %s", addr->transport->warn_message, | |
2307 | addr->transport->name, expand_string_message); | |
d6c82d7b JH |
2308 | |
2309 | else if ((pid = child_open_exim(&fd)) > 0) | |
059ec3d9 | 2310 | { |
d6c82d7b JH |
2311 | FILE *f = fdopen(fd, "wb"); |
2312 | if (errors_reply_to && !contains_header(US"Reply-To", warn_message)) | |
2313 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
2314 | fprintf(f, "Auto-Submitted: auto-replied\n"); | |
2315 | if (!contains_header(US"From", warn_message)) | |
2316 | moan_write_from(f); | |
2317 | fprintf(f, "%s", CS warn_message); | |
059ec3d9 | 2318 | |
d6c82d7b | 2319 | /* Close and wait for child process to complete, without a timeout. */ |
059ec3d9 | 2320 | |
d6c82d7b JH |
2321 | (void)fclose(f); |
2322 | (void)child_close(pid, 0); | |
059ec3d9 PH |
2323 | } |
2324 | ||
2325 | addr->special_action = SPECIAL_NONE; | |
2326 | } | |
2327 | } | |
2328 | ||
2329 | ||
2330 | ||
fa41615d | 2331 | |
3070ceee JH |
2332 | /* Check transport for the given concurrency limit. Return TRUE if over |
2333 | the limit (or an expansion failure), else FALSE and if there was a limit, | |
2334 | the key for the hints database used for the concurrency count. */ | |
fa41615d | 2335 | |
3070ceee JH |
2336 | static BOOL |
2337 | tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key) | |
fa41615d | 2338 | { |
3070ceee JH |
2339 | unsigned max_parallel; |
2340 | ||
2341 | if (!tp->max_parallel) return FALSE; | |
2342 | ||
2343 | max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE); | |
2344 | if (expand_string_message) | |
2345 | { | |
2346 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option " | |
2347 | "in %s transport (%s): %s", tp->name, addr->address, | |
2348 | expand_string_message); | |
2349 | return TRUE; | |
2350 | } | |
2351 | ||
2352 | if (max_parallel > 0) | |
2353 | { | |
2354 | uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name); | |
2355 | if (!enq_start(serialize_key, max_parallel)) | |
2356 | { | |
2357 | address_item * next; | |
2358 | DEBUG(D_transport) | |
2359 | debug_printf("skipping tpt %s because concurrency limit %u reached\n", | |
2360 | tp->name, max_parallel); | |
2361 | do | |
2362 | { | |
2363 | next = addr->next; | |
2364 | addr->message = US"concurrency limit reached for transport"; | |
2365 | addr->basic_errno = ERRNO_TRETRY; | |
2366 | post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0); | |
2367 | } while ((addr = next)); | |
2368 | return TRUE; | |
2369 | } | |
2370 | *key = serialize_key; | |
2371 | } | |
2372 | return FALSE; | |
fa41615d JH |
2373 | } |
2374 | ||
2375 | ||
2376 | ||
059ec3d9 PH |
2377 | /************************************************* |
2378 | * Do local deliveries * | |
2379 | *************************************************/ | |
2380 | ||
2381 | /* This function processes the list of addresses in addr_local. True local | |
2382 | deliveries are always done one address at a time. However, local deliveries can | |
2383 | be batched up in some cases. Typically this is when writing batched SMTP output | |
2384 | files for use by some external transport mechanism, or when running local | |
2385 | deliveries over LMTP. | |
2386 | ||
2387 | Arguments: None | |
2388 | Returns: Nothing | |
2389 | */ | |
2390 | ||
2391 | static void | |
2392 | do_local_deliveries(void) | |
2393 | { | |
2394 | open_db dbblock; | |
2395 | open_db *dbm_file = NULL; | |
2396 | time_t now = time(NULL); | |
2397 | ||
2398 | /* Loop until we have exhausted the supply of local deliveries */ | |
2399 | ||
d6c82d7b | 2400 | while (addr_local) |
059ec3d9 PH |
2401 | { |
2402 | time_t delivery_start; | |
2403 | int deliver_time; | |
2404 | address_item *addr2, *addr3, *nextaddr; | |
2405 | int logflags = LOG_MAIN; | |
2406 | int logchar = dont_deliver? '*' : '='; | |
2407 | transport_instance *tp; | |
fa41615d | 2408 | uschar * serialize_key = NULL; |
059ec3d9 PH |
2409 | |
2410 | /* Pick the first undelivered address off the chain */ | |
2411 | ||
2412 | address_item *addr = addr_local; | |
2413 | addr_local = addr->next; | |
2414 | addr->next = NULL; | |
2415 | ||
2416 | DEBUG(D_deliver|D_transport) | |
2417 | debug_printf("--------> %s <--------\n", addr->address); | |
2418 | ||
2419 | /* An internal disaster if there is no transport. Should not occur! */ | |
2420 | ||
d6c82d7b | 2421 | if (!(tp = addr->transport)) |
059ec3d9 PH |
2422 | { |
2423 | logflags |= LOG_PANIC; | |
2424 | disable_logging = FALSE; /* Jic */ | |
d6c82d7b JH |
2425 | addr->message = addr->router |
2426 | ? string_sprintf("No transport set by %s router", addr->router->name) | |
2427 | : string_sprintf("No transport set by system filter"); | |
059ec3d9 PH |
2428 | post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0); |
2429 | continue; | |
2430 | } | |
2431 | ||
2432 | /* Check that this base address hasn't previously been delivered to this | |
2433 | transport. The check is necessary at this point to handle homonymic addresses | |
2434 | correctly in cases where the pattern of redirection changes between delivery | |
2435 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
2436 | time. */ | |
2437 | ||
c2c19e9d | 2438 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
2439 | |
2440 | /* There are weird cases where logging is disabled */ | |
2441 | ||
2442 | disable_logging = tp->disable_logging; | |
2443 | ||
f7fd3850 PH |
2444 | /* Check for batched addresses and possible amalgamation. Skip all the work |
2445 | if either batch_max <= 1 or there aren't any other addresses for local | |
2446 | delivery. */ | |
059ec3d9 | 2447 | |
d6c82d7b | 2448 | if (tp->batch_max > 1 && addr_local) |
059ec3d9 PH |
2449 | { |
2450 | int batch_count = 1; | |
2451 | BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain"); | |
d6c82d7b JH |
2452 | BOOL uses_lp = ( testflag(addr, af_pfr) |
2453 | && (testflag(addr, af_file) || addr->local_part[0] == '|') | |
2454 | ) | |
2455 | || readconf_depends((driver_instance *)tp, US"local_part"); | |
059ec3d9 PH |
2456 | uschar *batch_id = NULL; |
2457 | address_item **anchor = &addr_local; | |
2458 | address_item *last = addr; | |
2459 | address_item *next; | |
2460 | ||
2461 | /* Expand the batch_id string for comparison with other addresses. | |
2462 | Expansion failure suppresses batching. */ | |
2463 | ||
d6c82d7b | 2464 | if (tp->batch_id) |
059ec3d9 PH |
2465 | { |
2466 | deliver_set_expansions(addr); | |
2467 | batch_id = expand_string(tp->batch_id); | |
2468 | deliver_set_expansions(NULL); | |
d6c82d7b | 2469 | if (!batch_id) |
059ec3d9 PH |
2470 | { |
2471 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2472 | "in %s transport (%s): %s", tp->name, addr->address, | |
2473 | expand_string_message); | |
2474 | batch_count = tp->batch_max; | |
2475 | } | |
2476 | } | |
2477 | ||
2478 | /* Until we reach the batch_max limit, pick off addresses which have the | |
2479 | same characteristics. These are: | |
2480 | ||
2481 | same transport | |
7816e254 | 2482 | not previously delivered (see comment about 50 lines above) |
059ec3d9 | 2483 | same local part if the transport's configuration contains $local_part |
f7fd3850 | 2484 | or if this is a file or pipe delivery from a redirection |
059ec3d9 PH |
2485 | same domain if the transport's configuration contains $domain |
2486 | same errors address | |
2487 | same additional headers | |
2488 | same headers to be removed | |
2489 | same uid/gid for running the transport | |
2490 | same first host if a host list is set | |
2491 | */ | |
2492 | ||
d6c82d7b | 2493 | while ((next = *anchor) && batch_count < tp->batch_max) |
059ec3d9 PH |
2494 | { |
2495 | BOOL ok = | |
d6c82d7b JH |
2496 | tp == next->transport |
2497 | && !previously_transported(next, TRUE) | |
2498 | && (addr->flags & (af_pfr|af_file)) == (next->flags & (af_pfr|af_file)) | |
2499 | && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0) | |
2500 | && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0) | |
2501 | && same_strings(next->prop.errors_address, addr->prop.errors_address) | |
2502 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
2503 | && same_strings(next->prop.remove_headers, addr->prop.remove_headers) | |
2504 | && same_ugid(tp, addr, next) | |
2505 | && ( !addr->host_list && !next->host_list | |
2506 | || addr->host_list | |
2507 | && next->host_list | |
2508 | && Ustrcmp(addr->host_list->name, next->host_list->name) == 0 | |
2509 | ); | |
059ec3d9 PH |
2510 | |
2511 | /* If the transport has a batch_id setting, batch_id will be non-NULL | |
2512 | from the expansion outside the loop. Expand for this address and compare. | |
2513 | Expansion failure makes this address ineligible for batching. */ | |
2514 | ||
d6c82d7b | 2515 | if (ok && batch_id) |
059ec3d9 PH |
2516 | { |
2517 | uschar *bid; | |
2518 | address_item *save_nextnext = next->next; | |
2519 | next->next = NULL; /* Expansion for a single address */ | |
2520 | deliver_set_expansions(next); | |
2521 | next->next = save_nextnext; | |
2522 | bid = expand_string(tp->batch_id); | |
2523 | deliver_set_expansions(NULL); | |
d6c82d7b | 2524 | if (!bid) |
059ec3d9 PH |
2525 | { |
2526 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2527 | "in %s transport (%s): %s", tp->name, next->address, | |
2528 | expand_string_message); | |
2529 | ok = FALSE; | |
2530 | } | |
2531 | else ok = (Ustrcmp(batch_id, bid) == 0); | |
2532 | } | |
2533 | ||
2534 | /* Take address into batch if OK. */ | |
2535 | ||
2536 | if (ok) | |
2537 | { | |
2538 | *anchor = next->next; /* Include the address */ | |
2539 | next->next = NULL; | |
2540 | last->next = next; | |
2541 | last = next; | |
2542 | batch_count++; | |
2543 | } | |
fa41615d | 2544 | else anchor = &next->next; /* Skip the address */ |
059ec3d9 PH |
2545 | } |
2546 | } | |
2547 | ||
2548 | /* We now have one or more addresses that can be delivered in a batch. Check | |
2549 | whether the transport is prepared to accept a message of this size. If not, | |
2550 | fail them all forthwith. If the expansion fails, or does not yield an | |
2551 | integer, defer delivery. */ | |
2552 | ||
d6c82d7b | 2553 | if (tp->message_size_limit) |
059ec3d9 PH |
2554 | { |
2555 | int rc = check_message_size(tp, addr); | |
2556 | if (rc != OK) | |
2557 | { | |
2558 | replicate_status(addr); | |
d6c82d7b | 2559 | while (addr) |
059ec3d9 PH |
2560 | { |
2561 | addr2 = addr->next; | |
2562 | post_process_one(addr, rc, logflags, DTYPE_TRANSPORT, 0); | |
2563 | addr = addr2; | |
2564 | } | |
2565 | continue; /* With next batch of addresses */ | |
2566 | } | |
2567 | } | |
2568 | ||
2569 | /* If we are not running the queue, or if forcing, all deliveries will be | |
2570 | attempted. Otherwise, we must respect the retry times for each address. Even | |
2571 | when not doing this, we need to set up the retry key string, and determine | |
2572 | whether a retry record exists, because after a successful delivery, a delete | |
2573 | retry item must be set up. Keep the retry database open only for the duration | |
2574 | of these checks, rather than for all local deliveries, because some local | |
2575 | deliveries (e.g. to pipes) can take a substantial time. */ | |
2576 | ||
d6c82d7b | 2577 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
059ec3d9 PH |
2578 | { |
2579 | DEBUG(D_deliver|D_retry|D_hints_lookup) | |
2580 | debug_printf("no retry data available\n"); | |
2581 | } | |
2582 | ||
2583 | addr2 = addr; | |
2584 | addr3 = NULL; | |
d6c82d7b | 2585 | while (addr2) |
059ec3d9 PH |
2586 | { |
2587 | BOOL ok = TRUE; /* to deliver this address */ | |
2588 | uschar *retry_key; | |
2589 | ||
2590 | /* Set up the retry key to include the domain or not, and change its | |
2591 | leading character from "R" to "T". Must make a copy before doing this, | |
2592 | because the old key may be pointed to from a "delete" retry item after | |
2593 | a routing delay. */ | |
2594 | ||
2595 | retry_key = string_copy( | |
d6c82d7b | 2596 | tp->retry_use_local_part ? addr2->address_retry_key : |
059ec3d9 PH |
2597 | addr2->domain_retry_key); |
2598 | *retry_key = 'T'; | |
2599 | ||
2600 | /* Inspect the retry data. If there is no hints file, delivery happens. */ | |
2601 | ||
d6c82d7b | 2602 | if (dbm_file) |
059ec3d9 PH |
2603 | { |
2604 | dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key); | |
2605 | ||
2606 | /* If there is no retry record, delivery happens. If there is, | |
2607 | remember it exists so it can be deleted after a successful delivery. */ | |
2608 | ||
d6c82d7b | 2609 | if (retry_record) |
059ec3d9 PH |
2610 | { |
2611 | setflag(addr2, af_lt_retry_exists); | |
2612 | ||
2613 | /* A retry record exists for this address. If queue running and not | |
2614 | forcing, inspect its contents. If the record is too old, or if its | |
2615 | retry time has come, or if it has passed its cutoff time, delivery | |
2616 | will go ahead. */ | |
2617 | ||
2618 | DEBUG(D_retry) | |
2619 | { | |
ea49d0e1 PH |
2620 | debug_printf("retry record exists: age=%s ", |
2621 | readconf_printtime(now - retry_record->time_stamp)); | |
2622 | debug_printf("(max %s)\n", readconf_printtime(retry_data_expire)); | |
2623 | debug_printf(" time to retry = %s expired = %d\n", | |
2624 | readconf_printtime(retry_record->next_try - now), | |
2625 | retry_record->expired); | |
059ec3d9 PH |
2626 | } |
2627 | ||
2628 | if (queue_running && !deliver_force) | |
2629 | { | |
d6c82d7b JH |
2630 | ok = (now - retry_record->time_stamp > retry_data_expire) |
2631 | || (now >= retry_record->next_try) | |
2632 | || retry_record->expired; | |
059ec3d9 PH |
2633 | |
2634 | /* If we haven't reached the retry time, there is one more check | |
1ddeb334 | 2635 | to do, which is for the ultimate address timeout. */ |
059ec3d9 PH |
2636 | |
2637 | if (!ok) | |
ba9af0af TF |
2638 | ok = retry_ultimate_address_timeout(retry_key, addr2->domain, |
2639 | retry_record, now); | |
059ec3d9 PH |
2640 | } |
2641 | } | |
2642 | else DEBUG(D_retry) debug_printf("no retry record exists\n"); | |
2643 | } | |
2644 | ||
2645 | /* This address is to be delivered. Leave it on the chain. */ | |
2646 | ||
2647 | if (ok) | |
2648 | { | |
2649 | addr3 = addr2; | |
2650 | addr2 = addr2->next; | |
2651 | } | |
2652 | ||
2653 | /* This address is to be deferred. Take it out of the chain, and | |
2654 | post-process it as complete. Must take it out of the chain first, | |
2655 | because post processing puts it on another chain. */ | |
2656 | ||
2657 | else | |
2658 | { | |
2659 | address_item *this = addr2; | |
2660 | this->message = US"Retry time not yet reached"; | |
2661 | this->basic_errno = ERRNO_LRETRY; | |
d6c82d7b JH |
2662 | addr2 = addr3 ? (addr3->next = addr2->next) |
2663 | : (addr = addr2->next); | |
059ec3d9 PH |
2664 | post_process_one(this, DEFER, logflags, DTYPE_TRANSPORT, 0); |
2665 | } | |
2666 | } | |
2667 | ||
d6c82d7b | 2668 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
2669 | |
2670 | /* If there are no addresses left on the chain, they all deferred. Loop | |
2671 | for the next set of addresses. */ | |
2672 | ||
d6c82d7b | 2673 | if (!addr) continue; |
059ec3d9 | 2674 | |
fa41615d JH |
2675 | /* If the transport is limited for parallellism, enforce that here. |
2676 | We use a hints DB entry, incremented here and decremented after | |
2677 | the transport (and any shadow transport) completes. */ | |
2678 | ||
3070ceee | 2679 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
fa41615d | 2680 | { |
fa41615d JH |
2681 | if (expand_string_message) |
2682 | { | |
2683 | logflags |= LOG_PANIC; | |
3070ceee JH |
2684 | do |
2685 | { | |
2686 | addr = addr->next; | |
fa41615d | 2687 | post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0); |
3070ceee | 2688 | } while ((addr = addr2)); |
fa41615d | 2689 | } |
3070ceee | 2690 | continue; /* Loop for the next set of addresses. */ |
fa41615d JH |
2691 | } |
2692 | ||
2693 | ||
059ec3d9 PH |
2694 | /* So, finally, we do have some addresses that can be passed to the |
2695 | transport. Before doing so, set up variables that are relevant to a | |
2696 | single delivery. */ | |
2697 | ||
2698 | deliver_set_expansions(addr); | |
2699 | delivery_start = time(NULL); | |
2700 | deliver_local(addr, FALSE); | |
2701 | deliver_time = (int)(time(NULL) - delivery_start); | |
2702 | ||
2703 | /* If a shadow transport (which must perforce be another local transport), is | |
2704 | defined, and its condition is met, we must pass the message to the shadow | |
2705 | too, but only those addresses that succeeded. We do this by making a new | |
2706 | chain of addresses - also to keep the original chain uncontaminated. We must | |
2707 | use a chain rather than doing it one by one, because the shadow transport may | |
2708 | batch. | |
2709 | ||
2710 | NOTE: if the condition fails because of a lookup defer, there is nothing we | |
2711 | can do! */ | |
2712 | ||
d6c82d7b JH |
2713 | if ( tp->shadow |
2714 | && ( !tp->shadow_condition | |
2715 | || expand_check_condition(tp->shadow_condition, tp->name, US"transport") | |
2716 | ) ) | |
059ec3d9 PH |
2717 | { |
2718 | transport_instance *stp; | |
2719 | address_item *shadow_addr = NULL; | |
2720 | address_item **last = &shadow_addr; | |
2721 | ||
d6c82d7b | 2722 | for (stp = transports; stp; stp = stp->next) |
059ec3d9 PH |
2723 | if (Ustrcmp(stp->name, tp->shadow) == 0) break; |
2724 | ||
d6c82d7b | 2725 | if (!stp) |
059ec3d9 PH |
2726 | log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ", |
2727 | tp->shadow); | |
2728 | ||
2729 | /* Pick off the addresses that have succeeded, and make clones. Put into | |
2730 | the shadow_message field a pointer to the shadow_message field of the real | |
2731 | address. */ | |
2732 | ||
d6c82d7b JH |
2733 | else for (addr2 = addr; addr2; addr2 = addr2->next) |
2734 | if (addr2->transport_return == OK) | |
2735 | { | |
2736 | addr3 = store_get(sizeof(address_item)); | |
2737 | *addr3 = *addr2; | |
2738 | addr3->next = NULL; | |
2739 | addr3->shadow_message = (uschar *) &(addr2->shadow_message); | |
2740 | addr3->transport = stp; | |
2741 | addr3->transport_return = DEFER; | |
2742 | addr3->return_filename = NULL; | |
2743 | addr3->return_file = -1; | |
2744 | *last = addr3; | |
2745 | last = &(addr3->next); | |
2746 | } | |
059ec3d9 PH |
2747 | |
2748 | /* If we found any addresses to shadow, run the delivery, and stick any | |
2749 | message back into the shadow_message field in the original. */ | |
2750 | ||
d6c82d7b | 2751 | if (shadow_addr) |
059ec3d9 PH |
2752 | { |
2753 | int save_count = transport_count; | |
2754 | ||
2755 | DEBUG(D_deliver|D_transport) | |
2756 | debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n"); | |
2757 | deliver_local(shadow_addr, TRUE); | |
2758 | ||
d6c82d7b | 2759 | for(; shadow_addr; shadow_addr = shadow_addr->next) |
059ec3d9 PH |
2760 | { |
2761 | int sresult = shadow_addr->transport_return; | |
d6c82d7b JH |
2762 | *(uschar **)shadow_addr->shadow_message = |
2763 | sresult == OK | |
2764 | ? string_sprintf(" ST=%s", stp->name) | |
2765 | : string_sprintf(" ST=%s (%s%s%s)", stp->name, | |
2766 | shadow_addr->basic_errno <= 0 | |
2767 | ? US"" | |
2768 | : US strerror(shadow_addr->basic_errno), | |
2769 | shadow_addr->basic_errno <= 0 || !shadow_addr->message | |
2770 | ? US"" | |
2771 | : US": ", | |
2772 | shadow_addr->message | |
2773 | ? shadow_addr->message | |
2774 | : shadow_addr->basic_errno <= 0 | |
2775 | ? US"unknown error" | |
2776 | : US""); | |
059ec3d9 PH |
2777 | |
2778 | DEBUG(D_deliver|D_transport) | |
2779 | debug_printf("%s shadow transport returned %s for %s\n", | |
2780 | stp->name, | |
d6c82d7b JH |
2781 | sresult == OK ? "OK" : |
2782 | sresult == DEFER ? "DEFER" : | |
2783 | sresult == FAIL ? "FAIL" : | |
2784 | sresult == PANIC ? "PANIC" : "?", | |
059ec3d9 PH |
2785 | shadow_addr->address); |
2786 | } | |
2787 | ||
2788 | DEBUG(D_deliver|D_transport) | |
2789 | debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n"); | |
2790 | ||
2791 | transport_count = save_count; /* Restore original transport count */ | |
2792 | } | |
2793 | } | |
2794 | ||
2795 | /* Cancel the expansions that were set up for the delivery. */ | |
2796 | ||
2797 | deliver_set_expansions(NULL); | |
2798 | ||
fa41615d JH |
2799 | /* If the transport was parallelism-limited, decrement the hints DB record. */ |
2800 | ||
2801 | if (serialize_key) enq_end(serialize_key); | |
2802 | ||
059ec3d9 PH |
2803 | /* Now we can process the results of the real transport. We must take each |
2804 | address off the chain first, because post_process_one() puts it on another | |
2805 | chain. */ | |
2806 | ||
d6c82d7b | 2807 | for (addr2 = addr; addr2; addr2 = nextaddr) |
059ec3d9 PH |
2808 | { |
2809 | int result = addr2->transport_return; | |
2810 | nextaddr = addr2->next; | |
2811 | ||
2812 | DEBUG(D_deliver|D_transport) | |
2813 | debug_printf("%s transport returned %s for %s\n", | |
2814 | tp->name, | |
d6c82d7b JH |
2815 | result == OK ? "OK" : |
2816 | result == DEFER ? "DEFER" : | |
2817 | result == FAIL ? "FAIL" : | |
2818 | result == PANIC ? "PANIC" : "?", | |
059ec3d9 PH |
2819 | addr2->address); |
2820 | ||
2821 | /* If there is a retry_record, or if delivery is deferred, build a retry | |
2822 | item for setting a new retry time or deleting the old retry record from | |
2823 | the database. These items are handled all together after all addresses | |
2824 | have been handled (so the database is open just for a short time for | |
2825 | updating). */ | |
2826 | ||
2827 | if (result == DEFER || testflag(addr2, af_lt_retry_exists)) | |
2828 | { | |
d6c82d7b JH |
2829 | int flags = result == DEFER ? 0 : rf_delete; |
2830 | uschar *retry_key = string_copy(tp->retry_use_local_part | |
2831 | ? addr2->address_retry_key : addr2->domain_retry_key); | |
059ec3d9 PH |
2832 | *retry_key = 'T'; |
2833 | retry_add_item(addr2, retry_key, flags); | |
2834 | } | |
2835 | ||
2836 | /* Done with this address */ | |
2837 | ||
2838 | if (result == OK) addr2->more_errno = deliver_time; | |
2839 | post_process_one(addr2, result, logflags, DTYPE_TRANSPORT, logchar); | |
2840 | ||
2841 | /* If a pipe delivery generated text to be sent back, the result may be | |
2842 | changed to FAIL, and we must copy this for subsequent addresses in the | |
2843 | batch. */ | |
2844 | ||
2845 | if (addr2->transport_return != result) | |
2846 | { | |
d6c82d7b | 2847 | for (addr3 = nextaddr; addr3; addr3 = addr3->next) |
059ec3d9 PH |
2848 | { |
2849 | addr3->transport_return = addr2->transport_return; | |
2850 | addr3->basic_errno = addr2->basic_errno; | |
2851 | addr3->message = addr2->message; | |
2852 | } | |
2853 | result = addr2->transport_return; | |
2854 | } | |
2855 | ||
2856 | /* Whether or not the result was changed to FAIL, we need to copy the | |
2857 | return_file value from the first address into all the addresses of the | |
2858 | batch, so they are all listed in the error message. */ | |
2859 | ||
2860 | addr2->return_file = addr->return_file; | |
2861 | ||
2862 | /* Change log character for recording successful deliveries. */ | |
2863 | ||
2864 | if (result == OK) logchar = '-'; | |
2865 | } | |
2866 | } /* Loop back for next batch of addresses */ | |
2867 | } | |
2868 | ||
2869 | ||
2870 | ||
2871 | ||
2872 | /************************************************* | |
2873 | * Sort remote deliveries * | |
2874 | *************************************************/ | |
2875 | ||
2876 | /* This function is called if remote_sort_domains is set. It arranges that the | |
2877 | chain of addresses for remote deliveries is ordered according to the strings | |
2878 | specified. Try to make this shuffling reasonably efficient by handling | |
2879 | sequences of addresses rather than just single ones. | |
2880 | ||
2881 | Arguments: None | |
2882 | Returns: Nothing | |
2883 | */ | |
2884 | ||
2885 | static void | |
2886 | sort_remote_deliveries(void) | |
2887 | { | |
2888 | int sep = 0; | |
2889 | address_item **aptr = &addr_remote; | |
55414b25 | 2890 | const uschar *listptr = remote_sort_domains; |
059ec3d9 PH |
2891 | uschar *pattern; |
2892 | uschar patbuf[256]; | |
2893 | ||
d6c82d7b JH |
2894 | while ( *aptr |
2895 | && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf))) | |
2896 | ) | |
059ec3d9 PH |
2897 | { |
2898 | address_item *moved = NULL; | |
2899 | address_item **bptr = &moved; | |
2900 | ||
d6c82d7b | 2901 | while (*aptr) |
059ec3d9 PH |
2902 | { |
2903 | address_item **next; | |
2904 | deliver_domain = (*aptr)->domain; /* set $domain */ | |
55414b25 | 2905 | if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
059ec3d9 PH |
2906 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK) |
2907 | { | |
d6c82d7b | 2908 | aptr = &(*aptr)->next; |
059ec3d9 PH |
2909 | continue; |
2910 | } | |
2911 | ||
d6c82d7b JH |
2912 | next = &(*aptr)->next; |
2913 | while ( *next | |
2914 | && (deliver_domain = (*next)->domain, /* Set $domain */ | |
55414b25 | 2915 | match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
d6c82d7b JH |
2916 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK |
2917 | ) | |
2918 | next = &(*next)->next; | |
059ec3d9 PH |
2919 | |
2920 | /* If the batch of non-matchers is at the end, add on any that were | |
2921 | extracted further up the chain, and end this iteration. Otherwise, | |
2922 | extract them from the chain and hang on the moved chain. */ | |
2923 | ||
d6c82d7b | 2924 | if (!*next) |
059ec3d9 PH |
2925 | { |
2926 | *next = moved; | |
2927 | break; | |
2928 | } | |
2929 | ||
2930 | *bptr = *aptr; | |
2931 | *aptr = *next; | |
2932 | *next = NULL; | |
2933 | bptr = next; | |
d6c82d7b | 2934 | aptr = &(*aptr)->next; |
059ec3d9 PH |
2935 | } |
2936 | ||
2937 | /* If the loop ended because the final address matched, *aptr will | |
2938 | be NULL. Add on to the end any extracted non-matching addresses. If | |
2939 | *aptr is not NULL, the loop ended via "break" when *next is null, that | |
2940 | is, there was a string of non-matching addresses at the end. In this | |
2941 | case the extracted addresses have already been added on the end. */ | |
2942 | ||
d6c82d7b | 2943 | if (!*aptr) *aptr = moved; |
059ec3d9 PH |
2944 | } |
2945 | ||
2946 | DEBUG(D_deliver) | |
2947 | { | |
2948 | address_item *addr; | |
2949 | debug_printf("remote addresses after sorting:\n"); | |
d6c82d7b | 2950 | for (addr = addr_remote; addr; addr = addr->next) |
059ec3d9 PH |
2951 | debug_printf(" %s\n", addr->address); |
2952 | } | |
2953 | } | |
2954 | ||
2955 | ||
2956 | ||
2957 | /************************************************* | |
2958 | * Read from pipe for remote delivery subprocess * | |
2959 | *************************************************/ | |
2960 | ||
2961 | /* This function is called when the subprocess is complete, but can also be | |
2962 | called before it is complete, in order to empty a pipe that is full (to prevent | |
2963 | deadlock). It must therefore keep track of its progress in the parlist data | |
2964 | block. | |
2965 | ||
2966 | We read the pipe to get the delivery status codes and a possible error message | |
2967 | for each address, optionally preceded by unusability data for the hosts and | |
2968 | also by optional retry data. | |
2969 | ||
2970 | Read in large chunks into the big buffer and then scan through, interpreting | |
2971 | the data therein. In most cases, only a single read will be necessary. No | |
1c5466b9 PH |
2972 | individual item will ever be anywhere near 2500 bytes in length, so by ensuring |
2973 | that we read the next chunk when there is less than 2500 bytes left in the | |
2974 | non-final chunk, we can assume each item is complete in the buffer before | |
2975 | handling it. Each item is written using a single write(), which is atomic for | |
2976 | small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and | |
2977 | often bigger) so even if we are reading while the subprocess is still going, we | |
2978 | should never have only a partial item in the buffer. | |
059ec3d9 PH |
2979 | |
2980 | Argument: | |
2981 | poffset the offset of the parlist item | |
2982 | eop TRUE if the process has completed | |
2983 | ||
2984 | Returns: TRUE if the terminating 'Z' item has been read, | |
2985 | or there has been a disaster (i.e. no more data needed); | |
2986 | FALSE otherwise | |
2987 | */ | |
2988 | ||
2989 | static BOOL | |
2990 | par_read_pipe(int poffset, BOOL eop) | |
2991 | { | |
2992 | host_item *h; | |
2993 | pardata *p = parlist + poffset; | |
2994 | address_item *addrlist = p->addrlist; | |
2995 | address_item *addr = p->addr; | |
2996 | pid_t pid = p->pid; | |
2997 | int fd = p->fd; | |
2998 | uschar *endptr = big_buffer; | |
2999 | uschar *ptr = endptr; | |
3000 | uschar *msg = p->msg; | |
3001 | BOOL done = p->done; | |
3002 | BOOL unfinished = TRUE; | |
bd21a787 WB |
3003 | /* minimum size to read is header size including id, subid and length */ |
3004 | int required = PIPE_HEADER_SIZE; | |
059ec3d9 PH |
3005 | |
3006 | /* Loop through all items, reading from the pipe when necessary. The pipe | |
3007 | is set up to be non-blocking, but there are two different Unix mechanisms in | |
3008 | use. Exim uses O_NONBLOCK if it is defined. This returns 0 for end of file, | |
3009 | and EAGAIN for no more data. If O_NONBLOCK is not defined, Exim uses O_NDELAY, | |
3010 | which returns 0 for both end of file and no more data. We distinguish the | |
3011 | two cases by taking 0 as end of file only when we know the process has | |
3012 | completed. | |
3013 | ||
3014 | Each separate item is written to the pipe in a single write(), and as they are | |
3015 | all short items, the writes will all be atomic and we should never find | |
8e669ac1 PH |
3016 | ourselves in the position of having read an incomplete item. "Short" in this |
3017 | case can mean up to about 1K in the case when there is a long error message | |
1c5466b9 | 3018 | associated with an address. */ |
059ec3d9 PH |
3019 | |
3020 | DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n", | |
3021 | (int)p->pid, eop? "ended" : "not ended"); | |
3022 | ||
3023 | while (!done) | |
3024 | { | |
3025 | retry_item *r, **rp; | |
3026 | int remaining = endptr - ptr; | |
bd21a787 WB |
3027 | uschar header[PIPE_HEADER_SIZE + 1]; |
3028 | uschar id, subid; | |
3029 | uschar *endc; | |
059ec3d9 PH |
3030 | |
3031 | /* Read (first time) or top up the chars in the buffer if necessary. | |
3032 | There will be only one read if we get all the available data (i.e. don't | |
3033 | fill the buffer completely). */ | |
3034 | ||
bd21a787 | 3035 | if (remaining < required && unfinished) |
059ec3d9 PH |
3036 | { |
3037 | int len; | |
3038 | int available = big_buffer_size - remaining; | |
3039 | ||
3040 | if (remaining > 0) memmove(big_buffer, ptr, remaining); | |
3041 | ||
3042 | ptr = big_buffer; | |
3043 | endptr = big_buffer + remaining; | |
3044 | len = read(fd, endptr, available); | |
3045 | ||
3046 | DEBUG(D_deliver) debug_printf("read() yielded %d\n", len); | |
3047 | ||
3048 | /* If the result is EAGAIN and the process is not complete, just | |
3049 | stop reading any more and process what we have already. */ | |
3050 | ||
3051 | if (len < 0) | |
3052 | { | |
3053 | if (!eop && errno == EAGAIN) len = 0; else | |
3054 | { | |
3055 | msg = string_sprintf("failed to read pipe from transport process " | |
3056 | "%d for transport %s: %s", pid, addr->transport->driver_name, | |
3057 | strerror(errno)); | |
3058 | break; | |
3059 | } | |
3060 | } | |
3061 | ||
3062 | /* If the length is zero (eof or no-more-data), just process what we | |
3063 | already have. Note that if the process is still running and we have | |
3064 | read all the data in the pipe (but less that "available") then we | |
3065 | won't read any more, as "unfinished" will get set FALSE. */ | |
3066 | ||
3067 | endptr += len; | |
bd21a787 | 3068 | remaining += len; |
059ec3d9 PH |
3069 | unfinished = len == available; |
3070 | } | |
3071 | ||
3072 | /* If we are at the end of the available data, exit the loop. */ | |
059ec3d9 PH |
3073 | if (ptr >= endptr) break; |
3074 | ||
bd21a787 WB |
3075 | /* copy and read header */ |
3076 | memcpy(header, ptr, PIPE_HEADER_SIZE); | |
94431adb | 3077 | header[PIPE_HEADER_SIZE] = '\0'; |
bd21a787 WB |
3078 | id = header[0]; |
3079 | subid = header[1]; | |
3080 | required = Ustrtol(header + 2, &endc, 10) + PIPE_HEADER_SIZE; /* header + data */ | |
3081 | if (*endc) | |
3082 | { | |
3083 | msg = string_sprintf("failed to read pipe from transport process " | |
3084 | "%d for transport %s: error reading size from header", pid, addr->transport->driver_name); | |
3085 | done = TRUE; | |
3086 | break; | |
3087 | } | |
3088 | ||
3089 | DEBUG(D_deliver) | |
94431adb | 3090 | debug_printf("header read id:%c,subid:%c,size:%s,required:%d,remaining:%d,unfinished:%d\n", |
bd21a787 WB |
3091 | id, subid, header+2, required, remaining, unfinished); |
3092 | ||
3093 | /* is there room for the dataset we want to read ? */ | |
3094 | if (required > big_buffer_size - PIPE_HEADER_SIZE) | |
3095 | { | |
3096 | msg = string_sprintf("failed to read pipe from transport process " | |
3097 | "%d for transport %s: big_buffer too small! required size=%d buffer size=%d", pid, addr->transport->driver_name, | |
3098 | required, big_buffer_size - PIPE_HEADER_SIZE); | |
3099 | done = TRUE; | |
3100 | break; | |
3101 | } | |
3102 | ||
94431adb | 3103 | /* we wrote all datasets with atomic write() calls |
bd21a787 | 3104 | remaining < required only happens if big_buffer was too small |
94431adb | 3105 | to get all available data from pipe. unfinished has to be true |
bd21a787 WB |
3106 | as well. */ |
3107 | if (remaining < required) | |
8fa0a4d4 | 3108 | { |
bd21a787 WB |
3109 | if (unfinished) |
3110 | continue; | |
8fa0a4d4 | 3111 | msg = string_sprintf("failed to read pipe from transport process " |
94431adb | 3112 | "%d for transport %s: required size=%d > remaining size=%d and unfinished=false", |
8fa0a4d4 JH |
3113 | pid, addr->transport->driver_name, required, remaining); |
3114 | done = TRUE; | |
3115 | break; | |
3116 | } | |
bd21a787 WB |
3117 | |
3118 | /* step behind the header */ | |
3119 | ptr += PIPE_HEADER_SIZE; | |
94431adb | 3120 | |
059ec3d9 PH |
3121 | /* Handle each possible type of item, assuming the complete item is |
3122 | available in store. */ | |
3123 | ||
bd21a787 | 3124 | switch (id) |
059ec3d9 PH |
3125 | { |
3126 | /* Host items exist only if any hosts were marked unusable. Match | |
3127 | up by checking the IP address. */ | |
3128 | ||
3129 | case 'H': | |
d6c82d7b | 3130 | for (h = addrlist->host_list; h; h = h->next) |
059ec3d9 | 3131 | { |
d6c82d7b | 3132 | if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue; |
059ec3d9 PH |
3133 | h->status = ptr[0]; |
3134 | h->why = ptr[1]; | |
3135 | } | |
3136 | ptr += 2; | |
3137 | while (*ptr++); | |
3138 | break; | |
3139 | ||
3140 | /* Retry items are sent in a preceding R item for each address. This is | |
3141 | kept separate to keep each message short enough to guarantee it won't | |
3142 | be split in the pipe. Hopefully, in the majority of cases, there won't in | |
3143 | fact be any retry items at all. | |
3144 | ||
3145 | The complete set of retry items might include an item to delete a | |
3146 | routing retry if there was a previous routing delay. However, routing | |
3147 | retries are also used when a remote transport identifies an address error. | |
3148 | In that case, there may also be an "add" item for the same key. Arrange | |
3149 | that a "delete" item is dropped in favour of an "add" item. */ | |
3150 | ||
3151 | case 'R': | |
d6c82d7b | 3152 | if (!addr) goto ADDR_MISMATCH; |
059ec3d9 PH |
3153 | |
3154 | DEBUG(D_deliver|D_retry) | |
3155 | debug_printf("reading retry information for %s from subprocess\n", | |
3156 | ptr+1); | |
3157 | ||
3158 | /* Cut out any "delete" items on the list. */ | |
3159 | ||
d6c82d7b | 3160 | for (rp = &(addr->retries); (r = *rp); rp = &r->next) |
059ec3d9 PH |
3161 | if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */ |
3162 | { | |
3163 | if ((r->flags & rf_delete) == 0) break; /* It was not "delete" */ | |
3164 | *rp = r->next; /* Excise a delete item */ | |
3165 | DEBUG(D_deliver|D_retry) | |
3166 | debug_printf(" existing delete item dropped\n"); | |
3167 | } | |
059ec3d9 PH |
3168 | |
3169 | /* We want to add a delete item only if there is no non-delete item; | |
3170 | however we still have to step ptr through the data. */ | |
3171 | ||
d6c82d7b | 3172 | if (!r || (*ptr & rf_delete) == 0) |
059ec3d9 PH |
3173 | { |
3174 | r = store_get(sizeof(retry_item)); | |
3175 | r->next = addr->retries; | |
3176 | addr->retries = r; | |
3177 | r->flags = *ptr++; | |
3178 | r->key = string_copy(ptr); | |
3179 | while (*ptr++); | |
3180 | memcpy(&(r->basic_errno), ptr, sizeof(r->basic_errno)); | |
3181 | ptr += sizeof(r->basic_errno); | |
3182 | memcpy(&(r->more_errno), ptr, sizeof(r->more_errno)); | |
3183 | ptr += sizeof(r->more_errno); | |
3184 | r->message = (*ptr)? string_copy(ptr) : NULL; | |
3185 | DEBUG(D_deliver|D_retry) | |
3186 | debug_printf(" added %s item\n", | |
3187 | ((r->flags & rf_delete) == 0)? "retry" : "delete"); | |
3188 | } | |
3189 | ||
3190 | else | |
3191 | { | |
3192 | DEBUG(D_deliver|D_retry) | |
3193 | debug_printf(" delete item not added: non-delete item exists\n"); | |
3194 | ptr++; | |
3195 | while(*ptr++); | |
3196 | ptr += sizeof(r->basic_errno) + sizeof(r->more_errno); | |
3197 | } | |
3198 | ||
3199 | while(*ptr++); | |
3200 | break; | |
3201 | ||
3202 | /* Put the amount of data written into the parlist block */ | |
3203 | ||
3204 | case 'S': | |
3205 | memcpy(&(p->transport_count), ptr, sizeof(transport_count)); | |
3206 | ptr += sizeof(transport_count); | |
3207 | break; | |
3208 | ||
3209 | /* Address items are in the order of items on the address chain. We | |
3210 | remember the current address value in case this function is called | |
3211 | several times to empty the pipe in stages. Information about delivery | |
3212 | over TLS is sent in a preceding X item for each address. We don't put | |
3213 | it in with the other info, in order to keep each message short enough to | |
3214 | guarantee it won't be split in the pipe. */ | |
3215 | ||
a7538db1 | 3216 | #ifdef SUPPORT_TLS |
059ec3d9 | 3217 | case 'X': |
d6c82d7b | 3218 | if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */ |
bd21a787 | 3219 | switch (subid) |
9d1c15ef JH |
3220 | { |
3221 | case '1': | |
3222 | addr->cipher = NULL; | |
3223 | addr->peerdn = NULL; | |
3224 | ||
3225 | if (*ptr) | |
3226 | addr->cipher = string_copy(ptr); | |
3227 | while (*ptr++); | |
3228 | if (*ptr) | |
9d1c15ef | 3229 | addr->peerdn = string_copy(ptr); |
9d1c15ef JH |
3230 | break; |
3231 | ||
3232 | case '2': | |
9d1c15ef JH |
3233 | if (*ptr) |
3234 | (void) tls_import_cert(ptr, &addr->peercert); | |
152e7604 JH |
3235 | else |
3236 | addr->peercert = NULL; | |
9d1c15ef JH |
3237 | break; |
3238 | ||
3239 | case '3': | |
9d1c15ef JH |
3240 | if (*ptr) |
3241 | (void) tls_import_cert(ptr, &addr->ourcert); | |
152e7604 JH |
3242 | else |
3243 | addr->ourcert = NULL; | |
9d1c15ef | 3244 | break; |
018058b2 | 3245 | |
a7538db1 | 3246 | # ifndef DISABLE_OCSP |
018058b2 JH |
3247 | case '4': |
3248 | addr->ocsp = OCSP_NOT_REQ; | |
3249 | if (*ptr) | |
3250 | addr->ocsp = *ptr - '0'; | |
3251 | break; | |
a7538db1 | 3252 | # endif |
9d1c15ef | 3253 | } |
059ec3d9 PH |
3254 | while (*ptr++); |
3255 | break; | |
a7538db1 | 3256 | #endif /*SUPPORT_TLS*/ |
059ec3d9 | 3257 | |
6f123593 | 3258 | case 'C': /* client authenticator information */ |
bd21a787 | 3259 | switch (subid) |
9d1c15ef JH |
3260 | { |
3261 | case '1': | |
3262 | addr->authenticator = (*ptr)? string_copy(ptr) : NULL; | |
3263 | break; | |
3264 | case '2': | |
3265 | addr->auth_id = (*ptr)? string_copy(ptr) : NULL; | |
3266 | break; | |
3267 | case '3': | |
3268 | addr->auth_sndr = (*ptr)? string_copy(ptr) : NULL; | |
3269 | break; | |
3270 | } | |
6f123593 JH |
3271 | while (*ptr++); |
3272 | break; | |
3273 | ||
8ccd00b1 | 3274 | #ifndef DISABLE_PRDR |
fd98a5c6 | 3275 | case 'P': |
8ccd00b1 JH |
3276 | addr->flags |= af_prdr_used; |
3277 | break; | |
fd98a5c6 JH |
3278 | #endif |
3279 | ||
6c1c3d1d | 3280 | case 'D': |
d6c82d7b | 3281 | if (!addr) goto ADDR_MISMATCH; |
6c1c3d1d WB |
3282 | memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware)); |
3283 | ptr += sizeof(addr->dsn_aware); | |
3284 | DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware); | |
3285 | break; | |
6c1c3d1d | 3286 | |
059ec3d9 | 3287 | case 'A': |
d6c82d7b | 3288 | if (!addr) |
059ec3d9 PH |
3289 | { |
3290 | ADDR_MISMATCH: | |
3291 | msg = string_sprintf("address count mismatch for data read from pipe " | |
3292 | "for transport process %d for transport %s", pid, | |
3293 | addrlist->transport->driver_name); | |
3294 | done = TRUE; | |
3295 | break; | |
3296 | } | |
3297 | ||
895fbaf2 | 3298 | switch (subid) |
059ec3d9 | 3299 | { |
e6d2a989 JH |
3300 | #ifdef SUPPORT_SOCKS |
3301 | case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/ | |
3302 | proxy_session = TRUE; /*XXX shouod this be cleared somewhere? */ | |
3303 | if (*ptr == 0) | |
3304 | ptr++; | |
3305 | else | |
3306 | { | |
3307 | proxy_local_address = string_copy(ptr); | |
3308 | while(*ptr++); | |
3309 | memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port)); | |
3310 | ptr += sizeof(proxy_local_port); | |
3311 | } | |
3312 | break; | |
3313 | #endif | |
3314 | ||
895fbaf2 JH |
3315 | #ifdef EXPERIMENTAL_DSN_INFO |
3316 | case '1': /* must arrive before A0, and applies to that addr */ | |
3317 | /* Two strings: smtp_greeting and helo_response */ | |
3318 | addr->smtp_greeting = string_copy(ptr); | |
3319 | while(*ptr++); | |
3320 | addr->helo_response = string_copy(ptr); | |
3321 | while(*ptr++); | |
3322 | break; | |
3323 | #endif | |
059ec3d9 | 3324 | |
895fbaf2 JH |
3325 | case '0': |
3326 | addr->transport_return = *ptr++; | |
3327 | addr->special_action = *ptr++; | |
3328 | memcpy(&(addr->basic_errno), ptr, sizeof(addr->basic_errno)); | |
3329 | ptr += sizeof(addr->basic_errno); | |
3330 | memcpy(&(addr->more_errno), ptr, sizeof(addr->more_errno)); | |
3331 | ptr += sizeof(addr->more_errno); | |
3332 | memcpy(&(addr->flags), ptr, sizeof(addr->flags)); | |
3333 | ptr += sizeof(addr->flags); | |
3334 | addr->message = (*ptr)? string_copy(ptr) : NULL; | |
3335 | while(*ptr++); | |
3336 | addr->user_message = (*ptr)? string_copy(ptr) : NULL; | |
3337 | while(*ptr++); | |
059ec3d9 | 3338 | |
895fbaf2 JH |
3339 | /* Always two strings for host information, followed by the port number and DNSSEC mark */ |
3340 | ||
3341 | if (*ptr != 0) | |
3342 | { | |
3343 | h = store_get(sizeof(host_item)); | |
3344 | h->name = string_copy(ptr); | |
3345 | while (*ptr++); | |
3346 | h->address = string_copy(ptr); | |
3347 | while(*ptr++); | |
3348 | memcpy(&(h->port), ptr, sizeof(h->port)); | |
3349 | ptr += sizeof(h->port); | |
3350 | h->dnssec = *ptr == '2' ? DS_YES | |
3351 | : *ptr == '1' ? DS_NO | |
3352 | : DS_UNK; | |
3353 | ptr++; | |
3354 | addr->host_used = h; | |
3355 | } | |
3356 | else ptr++; | |
3357 | ||
3358 | /* Finished with this address */ | |
3359 | ||
3360 | addr = addr->next; | |
3361 | break; | |
3362 | } | |
059ec3d9 PH |
3363 | break; |
3364 | ||
aeaf5db3 JH |
3365 | /* Local interface address/port */ |
3366 | case 'I': | |
3367 | if (*ptr) sending_ip_address = string_copy(ptr); | |
3368 | while (*ptr++) ; | |
93a6fce2 | 3369 | if (*ptr) sending_port = atoi(CS ptr); |
aeaf5db3 JH |
3370 | while (*ptr++) ; |
3371 | break; | |
3372 | ||
059ec3d9 PH |
3373 | /* Z marks the logical end of the data. It is followed by '0' if |
3374 | continue_transport was NULL at the end of transporting, otherwise '1'. | |
3375 | We need to know when it becomes NULL during a delivery down a passed SMTP | |
3376 | channel so that we don't try to pass anything more down it. Of course, for | |
3377 | most normal messages it will remain NULL all the time. */ | |
3378 | ||
3379 | case 'Z': | |
3380 | if (*ptr == '0') | |
3381 | { | |
3382 | continue_transport = NULL; | |
3383 | continue_hostname = NULL; | |
3384 | } | |
3385 | done = TRUE; | |
bd21a787 | 3386 | DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr); |
059ec3d9 PH |
3387 | break; |
3388 | ||
3389 | /* Anything else is a disaster. */ | |
3390 | ||
3391 | default: | |
3392 | msg = string_sprintf("malformed data (%d) read from pipe for transport " | |
3393 | "process %d for transport %s", ptr[-1], pid, | |
3394 | addr->transport->driver_name); | |
3395 | done = TRUE; | |
3396 | break; | |
3397 | } | |
3398 | } | |
3399 | ||
3400 | /* The done flag is inspected externally, to determine whether or not to | |
3401 | call the function again when the process finishes. */ | |
3402 | ||
3403 | p->done = done; | |
3404 | ||
3405 | /* If the process hadn't finished, and we haven't seen the end of the data | |
3406 | or suffered a disaster, update the rest of the state, and return FALSE to | |
3407 | indicate "not finished". */ | |
3408 | ||
3409 | if (!eop && !done) | |
3410 | { | |
3411 | p->addr = addr; | |
3412 | p->msg = msg; | |
3413 | return FALSE; | |
3414 | } | |
3415 | ||
3416 | /* Close our end of the pipe, to prevent deadlock if the far end is still | |
3417 | pushing stuff into it. */ | |
3418 | ||
f1e894f3 | 3419 | (void)close(fd); |
059ec3d9 PH |
3420 | p->fd = -1; |
3421 | ||
3422 | /* If we have finished without error, but haven't had data for every address, | |
3423 | something is wrong. */ | |
3424 | ||
d6c82d7b | 3425 | if (!msg && addr) |
059ec3d9 PH |
3426 | msg = string_sprintf("insufficient address data read from pipe " |
3427 | "for transport process %d for transport %s", pid, | |
3428 | addr->transport->driver_name); | |
3429 | ||
3430 | /* If an error message is set, something has gone wrong in getting back | |
3431 | the delivery data. Put the message into each address and freeze it. */ | |
3432 | ||
d6c82d7b JH |
3433 | if (msg) |
3434 | for (addr = addrlist; addr; addr = addr->next) | |
059ec3d9 PH |
3435 | { |
3436 | addr->transport_return = DEFER; | |
3437 | addr->special_action = SPECIAL_FREEZE; | |
3438 | addr->message = msg; | |
3439 | } | |
059ec3d9 PH |
3440 | |
3441 | /* Return TRUE to indicate we have got all we need from this process, even | |
3442 | if it hasn't actually finished yet. */ | |
3443 | ||
3444 | return TRUE; | |
3445 | } | |
3446 | ||
3447 | ||
3448 | ||
3449 | /************************************************* | |
3450 | * Post-process a set of remote addresses * | |
3451 | *************************************************/ | |
3452 | ||
3453 | /* Do what has to be done immediately after a remote delivery for each set of | |
3454 | addresses, then re-write the spool if necessary. Note that post_process_one | |
3455 | puts the address on an appropriate queue; hence we must fish off the next | |
3456 | one first. This function is also called if there is a problem with setting | |
3457 | up a subprocess to do a remote delivery in parallel. In this case, the final | |
3458 | argument contains a message, and the action must be forced to DEFER. | |
3459 | ||
3460 | Argument: | |
3461 | addr pointer to chain of address items | |
3462 | logflags flags for logging | |
3463 | msg NULL for normal cases; -> error message for unexpected problems | |
3464 | fallback TRUE if processing fallback hosts | |
3465 | ||
3466 | Returns: nothing | |
3467 | */ | |
3468 | ||
3469 | static void | |
3470 | remote_post_process(address_item *addr, int logflags, uschar *msg, | |
3471 | BOOL fallback) | |
3472 | { | |
3473 | host_item *h; | |
3474 | ||
3475 | /* If any host addresses were found to be unusable, add them to the unusable | |
3476 | tree so that subsequent deliveries don't try them. */ | |
3477 | ||
d6c82d7b JH |
3478 | for (h = addr->host_list; h; h = h->next) |
3479 | if (h->address) | |
3480 | if (h->status >= hstatus_unusable) tree_add_unusable(h); | |
059ec3d9 PH |
3481 | |
3482 | /* Now handle each address on the chain. The transport has placed '=' or '-' | |
3483 | into the special_action field for each successful delivery. */ | |
3484 | ||
d6c82d7b | 3485 | while (addr) |
059ec3d9 PH |
3486 | { |
3487 | address_item *next = addr->next; | |
3488 | ||
3489 | /* If msg == NULL (normal processing) and the result is DEFER and we are | |
3490 | processing the main hosts and there are fallback hosts available, put the | |
3491 | address on the list for fallback delivery. */ | |
3492 | ||
d6c82d7b JH |
3493 | if ( addr->transport_return == DEFER |
3494 | && addr->fallback_hosts | |
3495 | && !fallback | |
3496 | && !msg | |
3497 | ) | |
059ec3d9 PH |
3498 | { |
3499 | addr->host_list = addr->fallback_hosts; | |
3500 | addr->next = addr_fallback; | |
3501 | addr_fallback = addr; | |
3502 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address); | |
3503 | } | |
3504 | ||
3505 | /* If msg is set (=> unexpected problem), set it in the address before | |
3506 | doing the ordinary post processing. */ | |
3507 | ||
3508 | else | |
3509 | { | |
d6c82d7b | 3510 | if (msg) |
059ec3d9 PH |
3511 | { |
3512 | addr->message = msg; | |
3513 | addr->transport_return = DEFER; | |
3514 | } | |
3515 | (void)post_process_one(addr, addr->transport_return, logflags, | |
3516 | DTYPE_TRANSPORT, addr->special_action); | |
3517 | } | |
3518 | ||
3519 | /* Next address */ | |
3520 | ||
3521 | addr = next; | |
3522 | } | |
3523 | ||
3524 | /* If we have just delivered down a passed SMTP channel, and that was | |
3525 | the last address, the channel will have been closed down. Now that | |
3526 | we have logged that delivery, set continue_sequence to 1 so that | |
3527 | any subsequent deliveries don't get "*" incorrectly logged. */ | |
3528 | ||
d6c82d7b | 3529 | if (!continue_transport) continue_sequence = 1; |
059ec3d9 PH |
3530 | } |
3531 | ||
3532 | ||
3533 | ||
3534 | /************************************************* | |
3535 | * Wait for one remote delivery subprocess * | |
3536 | *************************************************/ | |
3537 | ||
3538 | /* This function is called while doing remote deliveries when either the | |
3539 | maximum number of processes exist and we need one to complete so that another | |
3540 | can be created, or when waiting for the last ones to complete. It must wait for | |
3541 | the completion of one subprocess, empty the control block slot, and return a | |
3542 | pointer to the address chain. | |
3543 | ||
3544 | Arguments: none | |
3545 | Returns: pointer to the chain of addresses handled by the process; | |
3546 | NULL if no subprocess found - this is an unexpected error | |
3547 | */ | |
3548 | ||
3549 | static address_item * | |
3550 | par_wait(void) | |
3551 | { | |
3552 | int poffset, status; | |
3553 | address_item *addr, *addrlist; | |
3554 | pid_t pid; | |
3555 | ||
3556 | set_process_info("delivering %s: waiting for a remote delivery subprocess " | |
3557 | "to finish", message_id); | |
3558 | ||
3559 | /* Loop until either a subprocess completes, or there are no subprocesses in | |
3560 | existence - in which case give an error return. We cannot proceed just by | |
3561 | waiting for a completion, because a subprocess may have filled up its pipe, and | |
3562 | be waiting for it to be emptied. Therefore, if no processes have finished, we | |
3563 | wait for one of the pipes to acquire some data by calling select(), with a | |
3564 | timeout just in case. | |
3565 | ||
3566 | The simple approach is just to iterate after reading data from a ready pipe. | |
3567 | This leads to non-ideal behaviour when the subprocess has written its final Z | |
3568 | item, closed the pipe, and is in the process of exiting (the common case). A | |
3569 | call to waitpid() yields nothing completed, but select() shows the pipe ready - | |
3570 | reading it yields EOF, so you end up with busy-waiting until the subprocess has | |
3571 | actually finished. | |
3572 | ||
3573 | To avoid this, if all the data that is needed has been read from a subprocess | |
3574 | after select(), an explicit wait() for it is done. We know that all it is doing | |
3575 | is writing to the pipe and then exiting, so the wait should not be long. | |
3576 | ||
3577 | The non-blocking waitpid() is to some extent just insurance; if we could | |
3578 | reliably detect end-of-file on the pipe, we could always know when to do a | |
3579 | blocking wait() for a completed process. However, because some systems use | |
3580 | NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to | |
3581 | use code that functions without the need to recognize EOF. | |
3582 | ||
3583 | There's a double loop here just in case we end up with a process that is not in | |
3584 | the list of remote delivery processes. Something has obviously gone wrong if | |
3585 | this is the case. (For example, a process that is incorrectly left over from | |
3586 | routing or local deliveries might be found.) The damage can be minimized by | |
3587 | looping back and looking for another process. If there aren't any, the error | |
3588 | return will happen. */ | |
3589 | ||
3590 | for (;;) /* Normally we do not repeat this loop */ | |
3591 | { | |
3592 | while ((pid = waitpid(-1, &status, WNOHANG)) <= 0) | |
3593 | { | |
3594 | struct timeval tv; | |
3595 | fd_set select_pipes; | |
3596 | int maxpipe, readycount; | |
3597 | ||
3598 | /* A return value of -1 can mean several things. If errno != ECHILD, it | |
3599 | either means invalid options (which we discount), or that this process was | |
3600 | interrupted by a signal. Just loop to try the waitpid() again. | |
3601 | ||
3602 | If errno == ECHILD, waitpid() is telling us that there are no subprocesses | |
3603 | in existence. This should never happen, and is an unexpected error. | |
3604 | However, there is a nasty complication when running under Linux. If "strace | |
3605 | -f" is being used under Linux to trace this process and its children, | |
3606 | subprocesses are "stolen" from their parents and become the children of the | |
3607 | tracing process. A general wait such as the one we've just obeyed returns | |
3608 | as if there are no children while subprocesses are running. Once a | |
3609 | subprocess completes, it is restored to the parent, and waitpid(-1) finds | |
3610 | it. Thanks to Joachim Wieland for finding all this out and suggesting a | |
3611 | palliative. | |
3612 | ||
3613 | This does not happen using "truss" on Solaris, nor (I think) with other | |
3614 | tracing facilities on other OS. It seems to be specific to Linux. | |
3615 | ||
3616 | What we do to get round this is to use kill() to see if any of our | |
3617 | subprocesses are still in existence. If kill() gives an OK return, we know | |
3618 | it must be for one of our processes - it can't be for a re-use of the pid, | |
3619 | because if our process had finished, waitpid() would have found it. If any | |
3620 | of our subprocesses are in existence, we proceed to use select() as if | |
3621 | waitpid() had returned zero. I think this is safe. */ | |
3622 | ||
3623 | if (pid < 0) | |
3624 | { | |
3625 | if (errno != ECHILD) continue; /* Repeats the waitpid() */ | |
3626 | ||
3627 | DEBUG(D_deliver) | |
3628 | debug_printf("waitpid() returned -1/ECHILD: checking explicitly " | |
3629 | "for process existence\n"); | |
3630 | ||
3631 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3632 | { | |
3633 | if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0) | |
3634 | { | |
3635 | DEBUG(D_deliver) debug_printf("process %d still exists: assume " | |
3636 | "stolen by strace\n", (int)pid); | |
3637 | break; /* With poffset set */ | |
3638 | } | |
3639 | } | |
3640 | ||
3641 | if (poffset >= remote_max_parallel) | |
3642 | { | |
3643 | DEBUG(D_deliver) debug_printf("*** no delivery children found\n"); | |
3644 | return NULL; /* This is the error return */ | |
3645 | } | |
3646 | } | |
3647 | ||
3648 | /* A pid value greater than 0 breaks the "while" loop. A negative value has | |
3649 | been handled above. A return value of zero means that there is at least one | |
3650 | subprocess, but there are no completed subprocesses. See if any pipes are | |
3651 | ready with any data for reading. */ | |
3652 | ||
3653 | DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n"); | |
3654 | ||
3655 | maxpipe = 0; | |
3656 | FD_ZERO(&select_pipes); | |
3657 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3658 | { | |
3659 | if (parlist[poffset].pid != 0) | |
3660 | { | |
3661 | int fd = parlist[poffset].fd; | |
3662 | FD_SET(fd, &select_pipes); | |
3663 | if (fd > maxpipe) maxpipe = fd; | |
3664 | } | |
3665 | } | |
3666 | ||
3667 | /* Stick in a 60-second timeout, just in case. */ | |
3668 | ||
3669 | tv.tv_sec = 60; | |
3670 | tv.tv_usec = 0; | |
3671 | ||
3672 | readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes, | |
3673 | NULL, NULL, &tv); | |
3674 | ||
3675 | /* Scan through the pipes and read any that are ready; use the count | |
3676 | returned by select() to stop when there are no more. Select() can return | |
3677 | with no processes (e.g. if interrupted). This shouldn't matter. | |
3678 | ||
3679 | If par_read_pipe() returns TRUE, it means that either the terminating Z was | |
3680 | read, or there was a disaster. In either case, we are finished with this | |
3681 | process. Do an explicit wait() for the process and break the main loop if | |
3682 | it succeeds. | |
3683 | ||
3684 | It turns out that we have to deal with the case of an interrupted system | |
3685 | call, which can happen on some operating systems if the signal handling is | |
3686 | set up to do that by default. */ | |
3687 | ||
3688 | for (poffset = 0; | |
3689 | readycount > 0 && poffset < remote_max_parallel; | |
3690 | poffset++) | |
3691 | { | |
d6c82d7b JH |
3692 | if ( (pid = parlist[poffset].pid) != 0 |
3693 | && FD_ISSET(parlist[poffset].fd, &select_pipes) | |
3694 | ) | |
059ec3d9 PH |
3695 | { |
3696 | readycount--; | |
3697 | if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */ | |
3698 | { | |
3699 | for (;;) /* Loop for signals */ | |
3700 | { | |
3701 | pid_t endedpid = waitpid(pid, &status, 0); | |
3702 | if (endedpid == pid) goto PROCESS_DONE; | |
3703 | if (endedpid != (pid_t)(-1) || errno != EINTR) | |
3704 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return " | |
3705 | "%d (errno = %d) from waitpid() for process %d", | |
3706 | (int)endedpid, errno, (int)pid); | |
3707 | } | |
3708 | } | |
3709 | } | |
3710 | } | |
3711 | ||
3712 | /* Now go back and look for a completed subprocess again. */ | |
3713 | } | |
3714 | ||
3715 | /* A completed process was detected by the non-blocking waitpid(). Find the | |
3716 | data block that corresponds to this subprocess. */ | |
3717 | ||
3718 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3719 | if (pid == parlist[poffset].pid) break; | |
3720 | ||
3721 | /* Found the data block; this is a known remote delivery process. We don't | |
3722 | need to repeat the outer loop. This should be what normally happens. */ | |
3723 | ||
3724 | if (poffset < remote_max_parallel) break; | |
3725 | ||
3726 | /* This situation is an error, but it's probably better to carry on looking | |
3727 | for another process than to give up (as we used to do). */ | |
3728 | ||
3729 | log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote " | |
3730 | "transport process list", pid); | |
3731 | } /* End of the "for" loop */ | |
3732 | ||
3733 | /* Come here when all the data was completely read after a select(), and | |
3734 | the process in pid has been wait()ed for. */ | |
3735 | ||
3736 | PROCESS_DONE: | |
3737 | ||
3738 | DEBUG(D_deliver) | |
3739 | { | |
3740 | if (status == 0) | |
3741 | debug_printf("remote delivery process %d ended\n", (int)pid); | |
3742 | else | |
3743 | debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid, | |
3744 | status); | |
3745 | } | |
3746 | ||
3747 | set_process_info("delivering %s", message_id); | |
3748 | ||
3749 | /* Get the chain of processed addresses */ | |
3750 | ||
3751 | addrlist = parlist[poffset].addrlist; | |
3752 | ||
3753 | /* If the process did not finish cleanly, record an error and freeze (except | |
3754 | for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed, | |
3755 | in case the delivery did actually happen. */ | |
3756 | ||
3757 | if ((status & 0xffff) != 0) | |
3758 | { | |
3759 | uschar *msg; | |
3760 | int msb = (status >> 8) & 255; | |
3761 | int lsb = status & 255; | |
3762 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
3763 | ||
3764 | msg = string_sprintf("%s transport process returned non-zero status 0x%04x: " | |
3765 | "%s %d", | |
3766 | addrlist->transport->driver_name, | |
3767 | status, | |
3768 | (msb == 0)? "terminated by signal" : "exit code", | |
3769 | code); | |
3770 | ||
3771 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
3772 | addrlist->special_action = SPECIAL_FREEZE; | |
3773 | ||
d6c82d7b | 3774 | for (addr = addrlist; addr; addr = addr->next) |
059ec3d9 PH |
3775 | { |
3776 | addr->transport_return = DEFER; | |
3777 | addr->message = msg; | |
3778 | } | |
3779 | ||
3780 | remove_journal = FALSE; | |
3781 | } | |
3782 | ||
3783 | /* Else complete reading the pipe to get the result of the delivery, if all | |
3784 | the data has not yet been obtained. */ | |
3785 | ||
3786 | else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE); | |
3787 | ||
3788 | /* Put the data count and return path into globals, mark the data slot unused, | |
3789 | decrement the count of subprocesses, and return the address chain. */ | |
3790 | ||
3791 | transport_count = parlist[poffset].transport_count; | |
3792 | used_return_path = parlist[poffset].return_path; | |
3793 | parlist[poffset].pid = 0; | |
3794 | parcount--; | |
3795 | return addrlist; | |
3796 | } | |
3797 | ||
3798 | ||
3799 | ||
3800 | /************************************************* | |
3801 | * Wait for subprocesses and post-process * | |
3802 | *************************************************/ | |
3803 | ||
3804 | /* This function waits for subprocesses until the number that are still running | |
3805 | is below a given threshold. For each complete subprocess, the addresses are | |
3806 | post-processed. If we can't find a running process, there is some shambles. | |
3807 | Better not bomb out, as that might lead to multiple copies of the message. Just | |
3808 | log and proceed as if all done. | |
3809 | ||
3810 | Arguments: | |
3811 | max maximum number of subprocesses to leave running | |
3812 | fallback TRUE if processing fallback hosts | |
3813 | ||
3814 | Returns: nothing | |
3815 | */ | |
3816 | ||
3817 | static void | |
3818 | par_reduce(int max, BOOL fallback) | |
3819 | { | |
3820 | while (parcount > max) | |
3821 | { | |
3822 | address_item *doneaddr = par_wait(); | |
d6c82d7b | 3823 | if (!doneaddr) |
059ec3d9 PH |
3824 | { |
3825 | log_write(0, LOG_MAIN|LOG_PANIC, | |
3826 | "remote delivery process count got out of step"); | |
3827 | parcount = 0; | |
3828 | } | |
fa41615d JH |
3829 | else |
3830 | { | |
3831 | transport_instance * tp = doneaddr->transport; | |
3832 | if (tp->max_parallel) | |
3833 | enq_end(string_sprintf("tpt-serialize-%s", tp->name)); | |
3834 | ||
3835 | remote_post_process(doneaddr, LOG_MAIN, NULL, fallback); | |
3836 | } | |
059ec3d9 PH |
3837 | } |
3838 | } | |
3839 | ||
3840 | ||
3841 | ||
3842 | ||
1ac6b2e7 | 3843 | static void |
bd21a787 | 3844 | rmt_dlv_checked_write(int fd, char id, char subid, void * buf, int size) |
1ac6b2e7 | 3845 | { |
bd21a787 | 3846 | uschar writebuffer[PIPE_HEADER_SIZE + BIG_BUFFER_SIZE]; |
dc8091e7 JH |
3847 | int header_length; |
3848 | int ret; | |
bd21a787 WB |
3849 | |
3850 | /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */ | |
3851 | /* complain to log if someone tries with buffer sizes we can't handle*/ | |
3852 | ||
3853 | if (size > 99999) | |
d6c82d7b | 3854 | { |
94431adb | 3855 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
bd21a787 WB |
3856 | "Failed writing transport result to pipe: can't handle buffers > 99999 bytes. truncating!\n"); |
3857 | size = 99999; | |
d6c82d7b | 3858 | } |
bd21a787 WB |
3859 | |
3860 | /* to keep the write() atomic we build header in writebuffer and copy buf behind */ | |
3861 | /* two write() calls would increase the complexity of reading from pipe */ | |
3862 | ||
3863 | /* convert size to human readable string prepended by id and subid */ | |
b75960c8 | 3864 | header_length = snprintf(CS writebuffer, PIPE_HEADER_SIZE+1, "%c%c%05d", id, subid, size); |
bd21a787 | 3865 | if (header_length != PIPE_HEADER_SIZE) |
d6c82d7b | 3866 | { |
bd21a787 WB |
3867 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n"); |
3868 | writebuffer[0] = '\0'; | |
d6c82d7b | 3869 | } |
bd21a787 | 3870 | |
94431adb | 3871 | DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%d,final:%s\n", |
bd21a787 WB |
3872 | id, subid, size, writebuffer); |
3873 | ||
3874 | if (buf && size > 0) | |
3875 | memcpy(writebuffer + PIPE_HEADER_SIZE, buf, size); | |
3876 | ||
3877 | size += PIPE_HEADER_SIZE; | |
dc8091e7 | 3878 | if ((ret = write(fd, writebuffer, size)) != size) |
1ac6b2e7 JH |
3879 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed writing transport result to pipe: %s\n", |
3880 | ret == -1 ? strerror(errno) : "short write"); | |
3881 | } | |
3882 | ||
059ec3d9 PH |
3883 | /************************************************* |
3884 | * Do remote deliveries * | |
3885 | *************************************************/ | |
3886 | ||
3887 | /* This function is called to process the addresses in addr_remote. We must | |
3888 | pick off the queue all addresses that have the same transport, remote | |
3889 | destination, and errors address, and hand them to the transport in one go, | |
3890 | subject to some configured limitations. If this is a run to continue delivering | |
3891 | to an existing delivery channel, skip all but those addresses that can go to | |
3892 | that channel. The skipped addresses just get deferred. | |
3893 | ||
3894 | If mua_wrapper is set, all addresses must be able to be sent in a single | |
3895 | transaction. If not, this function yields FALSE. | |
3896 | ||
3897 | In Exim 4, remote deliveries are always done in separate processes, even | |
3898 | if remote_max_parallel = 1 or if there's only one delivery to do. The reason | |
3899 | is so that the base process can retain privilege. This makes the | |
3900 | implementation of fallback transports feasible (though not initially done.) | |
3901 | ||
3902 | We create up to the configured number of subprocesses, each of which passes | |
3903 | back the delivery state via a pipe. (However, when sending down an existing | |
3904 | connection, remote_max_parallel is forced to 1.) | |
3905 | ||
3906 | Arguments: | |
3907 | fallback TRUE if processing fallback hosts | |
3908 | ||
3909 | Returns: TRUE normally | |
3910 | FALSE if mua_wrapper is set and the addresses cannot all be sent | |
3911 | in one transaction | |
3912 | */ | |
3913 | ||
3914 | static BOOL | |
3915 | do_remote_deliveries(BOOL fallback) | |
3916 | { | |
3917 | int parmax; | |
3918 | int delivery_count; | |
3919 | int poffset; | |
3920 | ||
3921 | parcount = 0; /* Number of executing subprocesses */ | |
3922 | ||
3923 | /* When sending down an existing channel, only do one delivery at a time. | |
3924 | We use a local variable (parmax) to hold the maximum number of processes; | |
3925 | this gets reduced from remote_max_parallel if we can't create enough pipes. */ | |
3926 | ||
d6c82d7b | 3927 | if (continue_transport) remote_max_parallel = 1; |
059ec3d9 PH |
3928 | parmax = remote_max_parallel; |
3929 | ||
3930 | /* If the data for keeping a list of processes hasn't yet been | |
3931 | set up, do so. */ | |
3932 | ||
d6c82d7b | 3933 | if (!parlist) |
059ec3d9 PH |
3934 | { |
3935 | parlist = store_get(remote_max_parallel * sizeof(pardata)); | |
3936 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3937 | parlist[poffset].pid = 0; | |
3938 | } | |
3939 | ||
3940 | /* Now loop for each remote delivery */ | |
3941 | ||
d6c82d7b | 3942 | for (delivery_count = 0; addr_remote; delivery_count++) |
059ec3d9 PH |
3943 | { |
3944 | pid_t pid; | |
3945 | uid_t uid; | |
3946 | gid_t gid; | |
3947 | int pfd[2]; | |
3948 | int address_count = 1; | |
3949 | int address_count_max; | |
3950 | BOOL multi_domain; | |
3951 | BOOL use_initgroups; | |
3952 | BOOL pipe_done = FALSE; | |
3953 | transport_instance *tp; | |
3954 | address_item **anchor = &addr_remote; | |
3955 | address_item *addr = addr_remote; | |
3956 | address_item *last = addr; | |
3957 | address_item *next; | |
d6c82d7b | 3958 | uschar * panicmsg; |
fa41615d | 3959 | uschar * serialize_key = NULL; |
059ec3d9 PH |
3960 | |
3961 | /* Pull the first address right off the list. */ | |
3962 | ||
3963 | addr_remote = addr->next; | |
3964 | addr->next = NULL; | |
3965 | ||
3966 | DEBUG(D_deliver|D_transport) | |
3967 | debug_printf("--------> %s <--------\n", addr->address); | |
3968 | ||
3969 | /* If no transport has been set, there has been a big screw-up somewhere. */ | |
3970 | ||
d6c82d7b | 3971 | if (!(tp = addr->transport)) |
059ec3d9 PH |
3972 | { |
3973 | disable_logging = FALSE; /* Jic */ | |
d6c82d7b JH |
3974 | panicmsg = US"No transport set by router"; |
3975 | goto panic_continue; | |
059ec3d9 PH |
3976 | } |
3977 | ||
3978 | /* Check that this base address hasn't previously been delivered to this | |
3979 | transport. The check is necessary at this point to handle homonymic addresses | |
3980 | correctly in cases where the pattern of redirection changes between delivery | |
3981 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
3982 | time. */ | |
3983 | ||
c2c19e9d | 3984 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
3985 | |
3986 | /* Force failure if the message is too big. */ | |
3987 | ||
d6c82d7b | 3988 | if (tp->message_size_limit) |
059ec3d9 PH |
3989 | { |
3990 | int rc = check_message_size(tp, addr); | |
3991 | if (rc != OK) | |
3992 | { | |
3993 | addr->transport_return = rc; | |
3994 | remote_post_process(addr, LOG_MAIN, NULL, fallback); | |
3995 | continue; | |
3996 | } | |
3997 | } | |
3998 | ||
3999 | /* Get the flag which specifies whether the transport can handle different | |
506900af JH |
4000 | domains that nevertheless resolve to the same set of hosts. If it needs |
4001 | expanding, get variables set: $address_data, $domain_data, $localpart_data, | |
4002 | $host, $host_address, $host_port. */ | |
4003 | if (tp->expand_multi_domain) | |
4004 | deliver_set_expansions(addr); | |
4005 | ||
4006 | if (exp_bool(addr, US"transport", tp->name, D_transport, | |
4007 | US"multi_domain", tp->multi_domain, tp->expand_multi_domain, | |
4008 | &multi_domain) != OK) | |
4009 | { | |
4010 | deliver_set_expansions(NULL); | |
d6c82d7b JH |
4011 | panicmsg = addr->message; |
4012 | goto panic_continue; | |
506900af | 4013 | } |
059ec3d9 PH |
4014 | |
4015 | /* Get the maximum it can handle in one envelope, with zero meaning | |
4016 | unlimited, which is forced for the MUA wrapper case. */ | |
4017 | ||
4018 | address_count_max = tp->max_addresses; | |
4019 | if (address_count_max == 0 || mua_wrapper) address_count_max = 999999; | |
4020 | ||
4021 | ||
4022 | /************************************************************************/ | |
4023 | /***** This is slightly experimental code, but should be safe. *****/ | |
4024 | ||
4025 | /* The address_count_max value is the maximum number of addresses that the | |
4026 | transport can send in one envelope. However, the transport must be capable of | |
4027 | dealing with any number of addresses. If the number it gets exceeds its | |
4028 | envelope limitation, it must send multiple copies of the message. This can be | |
4029 | done over a single connection for SMTP, so uses less resources than making | |
4030 | multiple connections. On the other hand, if remote_max_parallel is greater | |
4031 | than one, it is perhaps a good idea to use parallel processing to move the | |
4032 | message faster, even if that results in multiple simultaneous connections to | |
4033 | the same host. | |
4034 | ||
4035 | How can we come to some compromise between these two ideals? What we do is to | |
4036 | limit the number of addresses passed to a single instance of a transport to | |
4037 | the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total | |
4038 | number of addresses routed to remote transports divided by | |
4039 | remote_max_parallel. For example, if the message has 100 remote recipients, | |
4040 | remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at | |
4041 | once. But if rcpt_max is 100, we could send up to 100. | |
4042 | ||
4043 | Of course, not all the remotely addresses in a message are going to go to the | |
4044 | same set of hosts (except in smarthost configurations), so this is just a | |
4045 | heuristic way of dividing up the work. | |
4046 | ||
4047 | Furthermore (1), because this may not be wanted in some cases, and also to | |
4048 | cope with really pathological cases, there is also a limit to the number of | |
4049 | messages that are sent over one connection. This is the same limit that is | |
4050 | used when sending several different messages over the same connection. | |
4051 | Continue_sequence is set when in this situation, to the number sent so | |
4052 | far, including this message. | |
4053 | ||
4054 | Furthermore (2), when somebody explicitly sets the maximum value to 1, it | |
4055 | is probably because they are using VERP, in which case they want to pass only | |
4056 | one address at a time to the transport, in order to be able to use | |
4057 | $local_part and $domain in constructing a new return path. We could test for | |
4058 | the use of these variables, but as it is so likely they will be used when the | |
4059 | maximum is 1, we don't bother. Just leave the value alone. */ | |
4060 | ||
d6c82d7b JH |
4061 | if ( address_count_max != 1 |
4062 | && address_count_max < remote_delivery_count/remote_max_parallel | |
4063 | ) | |
059ec3d9 PH |
4064 | { |
4065 | int new_max = remote_delivery_count/remote_max_parallel; | |
4066 | int message_max = tp->connection_max_messages; | |
4067 | if (connection_max_messages >= 0) message_max = connection_max_messages; | |
4068 | message_max -= continue_sequence - 1; | |
4069 | if (message_max > 0 && new_max > address_count_max * message_max) | |
4070 | new_max = address_count_max * message_max; | |
4071 | address_count_max = new_max; | |
4072 | } | |
4073 | ||
4074 | /************************************************************************/ | |
4075 | ||
4076 | ||
4077 | /* Pick off all addresses which have the same transport, errors address, | |
4078 | destination, and extra headers. In some cases they point to the same host | |
4079 | list, but we also need to check for identical host lists generated from | |
4080 | entirely different domains. The host list pointers can be NULL in the case | |
4081 | where the hosts are defined in the transport. There is also a configured | |
4082 | maximum limit of addresses that can be handled at once (see comments above | |
506900af JH |
4083 | for how it is computed). |
4084 | If the transport does not handle multiple domains, enforce that also, | |
4085 | and if it might need a per-address check for this, re-evaluate it. | |
4086 | */ | |
059ec3d9 | 4087 | |
d6c82d7b | 4088 | while ((next = *anchor) && address_count < address_count_max) |
059ec3d9 | 4089 | { |
506900af JH |
4090 | BOOL md; |
4091 | if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0) | |
4092 | && tp == next->transport | |
4093 | && same_hosts(next->host_list, addr->host_list) | |
d43cbe25 JH |
4094 | && same_strings(next->prop.errors_address, addr->prop.errors_address) |
4095 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
506900af | 4096 | && same_ugid(tp, next, addr) |
d43cbe25 JH |
4097 | && ( next->prop.remove_headers == addr->prop.remove_headers |
4098 | || ( next->prop.remove_headers | |
4099 | && addr->prop.remove_headers | |
4100 | && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0 | |
506900af JH |
4101 | ) ) |
4102 | && ( !multi_domain | |
4103 | || ( ( | |
4104 | !tp->expand_multi_domain || (deliver_set_expansions(next), 1), | |
4105 | exp_bool(addr, | |
4106 | US"transport", next->transport->name, D_transport, | |
4107 | US"multi_domain", next->transport->multi_domain, | |
4108 | next->transport->expand_multi_domain, &md) == OK | |
4109 | ) | |
4110 | && md | |
4111 | ) ) ) | |
059ec3d9 PH |
4112 | { |
4113 | *anchor = next->next; | |
4114 | next->next = NULL; | |
4115 | next->first = addr; /* remember top one (for retry processing) */ | |
4116 | last->next = next; | |
4117 | last = next; | |
4118 | address_count++; | |
4119 | } | |
4120 | else anchor = &(next->next); | |
506900af | 4121 | deliver_set_expansions(NULL); |
059ec3d9 PH |
4122 | } |
4123 | ||
4124 | /* If we are acting as an MUA wrapper, all addresses must go in a single | |
4125 | transaction. If not, put them back on the chain and yield FALSE. */ | |
4126 | ||
d6c82d7b | 4127 | if (mua_wrapper && addr_remote) |
059ec3d9 PH |
4128 | { |
4129 | last->next = addr_remote; | |
4130 | addr_remote = addr; | |
4131 | return FALSE; | |
4132 | } | |
4133 | ||
fa41615d JH |
4134 | /* If the transport is limited for parallellism, enforce that here. |
4135 | The hints DB entry is decremented in par_reduce(), when we reap the | |
4136 | transport process. */ | |
4137 | ||
3070ceee JH |
4138 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
4139 | if ((panicmsg = expand_string_message)) | |
fa41615d | 4140 | goto panic_continue; |
3070ceee JH |
4141 | else |
4142 | continue; /* Loop for the next set of addresses. */ | |
fa41615d | 4143 | |
059ec3d9 PH |
4144 | /* Set up the expansion variables for this set of addresses */ |
4145 | ||
4146 | deliver_set_expansions(addr); | |
4147 | ||
018c60d7 JH |
4148 | /* Ensure any transport-set auth info is fresh */ |
4149 | addr->authenticator = addr->auth_id = addr->auth_sndr = NULL; | |
4150 | ||
059ec3d9 PH |
4151 | /* Compute the return path, expanding a new one if required. The old one |
4152 | must be set first, as it might be referred to in the expansion. */ | |
4153 | ||
d6c82d7b | 4154 | if(addr->prop.errors_address) |
d43cbe25 | 4155 | return_path = addr->prop.errors_address; |
384152a6 | 4156 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 4157 | else if(addr->prop.srs_sender) |
d43cbe25 | 4158 | return_path = addr->prop.srs_sender; |
384152a6 TK |
4159 | #endif |
4160 | else | |
4161 | return_path = sender_address; | |
059ec3d9 | 4162 | |
d6c82d7b | 4163 | if (tp->return_path) |
059ec3d9 PH |
4164 | { |
4165 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b JH |
4166 | if (new_return_path) |
4167 | return_path = new_return_path; | |
4168 | else if (!expand_string_forcedfail) | |
059ec3d9 | 4169 | { |
d6c82d7b JH |
4170 | panicmsg = string_sprintf("Failed to expand return path \"%s\": %s", |
4171 | tp->return_path, expand_string_message); | |
fa41615d | 4172 | goto enq_continue; |
059ec3d9 | 4173 | } |
059ec3d9 PH |
4174 | } |
4175 | ||
929ba01c PH |
4176 | /* Find the uid, gid, and use_initgroups setting for this transport. Failure |
4177 | logs and sets up error messages, so we just post-process and continue with | |
4178 | the next address. */ | |
4179 | ||
4180 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) | |
4181 | { | |
d6c82d7b | 4182 | panicmsg = NULL; |
fa41615d | 4183 | goto enq_continue; |
929ba01c PH |
4184 | } |
4185 | ||
059ec3d9 PH |
4186 | /* If this transport has a setup function, call it now so that it gets |
4187 | run in this process and not in any subprocess. That way, the results of | |
929ba01c PH |
4188 | any setup that are retained by the transport can be reusable. One of the |
4189 | things the setup does is to set the fallback host lists in the addresses. | |
4190 | That is why it is called at this point, before the continue delivery | |
4191 | processing, because that might use the fallback hosts. */ | |
059ec3d9 | 4192 | |
d6c82d7b | 4193 | if (tp->setup) |
929ba01c | 4194 | (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL)); |
059ec3d9 PH |
4195 | |
4196 | /* If this is a run to continue delivery down an already-established | |
4197 | channel, check that this set of addresses matches the transport and | |
4198 | the channel. If it does not, defer the addresses. If a host list exists, | |
4199 | we must check that the continue host is on the list. Otherwise, the | |
4200 | host is set in the transport. */ | |
4201 | ||
4202 | continue_more = FALSE; /* In case got set for the last lot */ | |
d6c82d7b | 4203 | if (continue_transport) |
059ec3d9 PH |
4204 | { |
4205 | BOOL ok = Ustrcmp(continue_transport, tp->name) == 0; | |
d6c82d7b | 4206 | if (ok && addr->host_list) |
059ec3d9 PH |
4207 | { |
4208 | host_item *h; | |
4209 | ok = FALSE; | |
d6c82d7b | 4210 | for (h = addr->host_list; h; h = h->next) |
059ec3d9 PH |
4211 | if (Ustrcmp(h->name, continue_hostname) == 0) |
4212 | { ok = TRUE; break; } | |
059ec3d9 PH |
4213 | } |
4214 | ||
4215 | /* Addresses not suitable; defer or queue for fallback hosts (which | |
4216 | might be the continue host) and skip to next address. */ | |
4217 | ||
4218 | if (!ok) | |
4219 | { | |
4220 | DEBUG(D_deliver) debug_printf("not suitable for continue_transport\n"); | |
fa41615d | 4221 | if (serialize_key) enq_end(serialize_key); |
059ec3d9 | 4222 | |
d6c82d7b | 4223 | if (addr->fallback_hosts && !fallback) |
059ec3d9 | 4224 | { |
fa41615d | 4225 | for (next = addr; ; next = next->next) |
059ec3d9 PH |
4226 | { |
4227 | next->host_list = next->fallback_hosts; | |
4228 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address); | |
d6c82d7b | 4229 | if (!next->next) break; |
059ec3d9 PH |
4230 | } |
4231 | next->next = addr_fallback; | |
4232 | addr_fallback = addr; | |
4233 | } | |
4234 | ||
77560253 | 4235 | else if (next) |
3070ceee JH |
4236 | { |
4237 | while (next->next) next = next->next; | |
4238 | next->next = addr_defer; | |
4239 | addr_defer = addr; | |
4240 | } | |
059ec3d9 PH |
4241 | |
4242 | continue; | |
4243 | } | |
4244 | ||
4245 | /* Set a flag indicating whether there are further addresses that list | |
4246 | the continued host. This tells the transport to leave the channel open, | |
4247 | but not to pass it to another delivery process. */ | |
4248 | ||
d6c82d7b | 4249 | for (next = addr_remote; next; next = next->next) |
059ec3d9 PH |
4250 | { |
4251 | host_item *h; | |
d6c82d7b | 4252 | for (h = next->host_list; h; h = h->next) |
059ec3d9 PH |
4253 | if (Ustrcmp(h->name, continue_hostname) == 0) |
4254 | { continue_more = TRUE; break; } | |
059ec3d9 PH |
4255 | } |
4256 | } | |
4257 | ||
4258 | /* The transports set up the process info themselves as they may connect | |
4259 | to more than one remote machine. They also have to set up the filter | |
4260 | arguments, if required, so that the host name and address are available | |
4261 | for expansion. */ | |
4262 | ||
4263 | transport_filter_argv = NULL; | |
4264 | ||
059ec3d9 PH |
4265 | /* Create the pipe for inter-process communication. If pipe creation |
4266 | fails, it is probably because the value of remote_max_parallel is so | |
4267 | large that too many file descriptors for pipes have been created. Arrange | |
4268 | to wait for a process to finish, and then try again. If we still can't | |
4269 | create a pipe when all processes have finished, break the retry loop. */ | |
4270 | ||
4271 | while (!pipe_done) | |
4272 | { | |
4273 | if (pipe(pfd) == 0) pipe_done = TRUE; | |
4274 | else if (parcount > 0) parmax = parcount; | |
4275 | else break; | |
4276 | ||
4277 | /* We need to make the reading end of the pipe non-blocking. There are | |
4278 | two different options for this. Exim is cunningly (I hope!) coded so | |
4279 | that it can use either of them, though it prefers O_NONBLOCK, which | |
4280 | distinguishes between EOF and no-more-data. */ | |
4281 | ||
a7538db1 | 4282 | #ifdef O_NONBLOCK |
ff790e47 | 4283 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK); |
a7538db1 | 4284 | #else |
ff790e47 | 4285 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY); |
a7538db1 | 4286 | #endif |
059ec3d9 PH |
4287 | |
4288 | /* If the maximum number of subprocesses already exist, wait for a process | |
4289 | to finish. If we ran out of file descriptors, parmax will have been reduced | |
4290 | from its initial value of remote_max_parallel. */ | |
4291 | ||
4292 | par_reduce(parmax - 1, fallback); | |
4293 | } | |
4294 | ||
4295 | /* If we failed to create a pipe and there were no processes to wait | |
4296 | for, we have to give up on this one. Do this outside the above loop | |
4297 | so that we can continue the main loop. */ | |
4298 | ||
4299 | if (!pipe_done) | |
4300 | { | |
d6c82d7b | 4301 | panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno)); |
fa41615d | 4302 | goto enq_continue; |
059ec3d9 PH |
4303 | } |
4304 | ||
4305 | /* Find a free slot in the pardata list. Must do this after the possible | |
4306 | waiting for processes to finish, because a terminating process will free | |
4307 | up a slot. */ | |
4308 | ||
4309 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
d6c82d7b JH |
4310 | if (parlist[poffset].pid == 0) |
4311 | break; | |
059ec3d9 PH |
4312 | |
4313 | /* If there isn't one, there has been a horrible disaster. */ | |
4314 | ||
4315 | if (poffset >= remote_max_parallel) | |
4316 | { | |
f1e894f3 PH |
4317 | (void)close(pfd[pipe_write]); |
4318 | (void)close(pfd[pipe_read]); | |
d6c82d7b | 4319 | panicmsg = US"Unexpectedly no free subprocess slot"; |
fa41615d | 4320 | goto enq_continue; |
059ec3d9 PH |
4321 | } |
4322 | ||
4323 | /* Now fork a subprocess to do the remote delivery, but before doing so, | |
4324 | ensure that any cached resourses are released so as not to interfere with | |
4325 | what happens in the subprocess. */ | |
4326 | ||
4327 | search_tidyup(); | |
4328 | ||
4329 | if ((pid = fork()) == 0) | |
4330 | { | |
4331 | int fd = pfd[pipe_write]; | |
4332 | host_item *h; | |
4333 | ||
2a47f028 JH |
4334 | /* Setting this global in the subprocess means we need never clear it */ |
4335 | transport_name = tp->name; | |
059ec3d9 | 4336 | |
2a47f028 | 4337 | /* There are weird circumstances in which logging is disabled */ |
059ec3d9 PH |
4338 | disable_logging = tp->disable_logging; |
4339 | ||
4340 | /* Show pids on debug output if parallelism possible */ | |
4341 | ||
d6c82d7b | 4342 | if (parmax > 1 && (parcount > 0 || addr_remote)) |
059ec3d9 PH |
4343 | { |
4344 | DEBUG(D_any|D_v) debug_selector |= D_pid; | |
4345 | DEBUG(D_deliver) debug_printf("Remote delivery process started\n"); | |
4346 | } | |
4347 | ||
4348 | /* Reset the random number generator, so different processes don't all | |
4349 | have the same sequence. In the test harness we want different, but | |
4350 | predictable settings for each delivery process, so do something explicit | |
4351 | here rather they rely on the fixed reset in the random number function. */ | |
4352 | ||
4353 | random_seed = running_in_test_harness? 42 + 2*delivery_count : 0; | |
4354 | ||
4355 | /* Set close-on-exec on the pipe so that it doesn't get passed on to | |
4356 | a new process that may be forked to do another delivery down the same | |
4357 | SMTP connection. */ | |
4358 | ||
ff790e47 | 4359 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
059ec3d9 PH |
4360 | |
4361 | /* Close open file descriptors for the pipes of other processes | |
4362 | that are running in parallel. */ | |
4363 | ||
4364 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
f1e894f3 | 4365 | if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd); |
059ec3d9 PH |
4366 | |
4367 | /* This process has inherited a copy of the file descriptor | |
4368 | for the data file, but its file pointer is shared with all the | |
4369 | other processes running in parallel. Therefore, we have to re-open | |
4370 | the file in order to get a new file descriptor with its own | |
4371 | file pointer. We don't need to lock it, as the lock is held by | |
4372 | the parent process. There doesn't seem to be any way of doing | |
4373 | a dup-with-new-file-pointer. */ | |
4374 | ||
f1e894f3 | 4375 | (void)close(deliver_datafile); |
a2da3176 JH |
4376 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-D", |
4377 | spool_directory, queue_name, message_subdir, message_id); | |
059ec3d9 | 4378 | |
a2da3176 | 4379 | if ((deliver_datafile = Uopen(spoolname, O_RDWR | O_APPEND, 0)) < 0) |
059ec3d9 PH |
4380 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote " |
4381 | "parallel delivery: %s", spoolname, strerror(errno)); | |
4382 | ||
4383 | /* Set the close-on-exec flag */ | |
4384 | ||
ff790e47 | 4385 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
059ec3d9 PH |
4386 | FD_CLOEXEC); |
4387 | ||
4388 | /* Set the uid/gid of this process; bombs out on failure. */ | |
4389 | ||
4390 | exim_setugid(uid, gid, use_initgroups, | |
4391 | string_sprintf("remote delivery to %s with transport=%s", | |
4392 | addr->address, tp->name)); | |
4393 | ||
4394 | /* Close the unwanted half of this process' pipe, set the process state, | |
4395 | and run the transport. Afterwards, transport_count will contain the number | |
4396 | of bytes written. */ | |
4397 | ||
f1e894f3 | 4398 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
4399 | set_process_info("delivering %s using %s", message_id, tp->name); |
4400 | debug_print_string(tp->debug_string); | |
4401 | if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr); | |
4402 | ||
4403 | set_process_info("delivering %s (just run %s for %s%s in subprocess)", | |
d6c82d7b | 4404 | message_id, tp->name, addr->address, addr->next ? ", ..." : ""); |
059ec3d9 PH |
4405 | |
4406 | /* Ensure any cached resources that we used are now released */ | |
4407 | ||
4408 | search_tidyup(); | |
4409 | ||
4410 | /* Pass the result back down the pipe. This is a lot more information | |
4411 | than is needed for a local delivery. We have to send back the error | |
4412 | status for each address, the usability status for each host that is | |
4413 | flagged as unusable, and all the retry items. When TLS is in use, we | |
4414 | send also the cipher and peerdn information. Each type of information | |
4415 | is flagged by an identifying byte, and is then in a fixed format (with | |
4416 | strings terminated by zeros), and there is a final terminator at the | |
4417 | end. The host information and retry information is all attached to | |
4418 | the first address, so that gets sent at the start. */ | |
4419 | ||
4420 | /* Host unusability information: for most success cases this will | |
4421 | be null. */ | |
4422 | ||
d6c82d7b | 4423 | for (h = addr->host_list; h; h = h->next) |
059ec3d9 | 4424 | { |
d6c82d7b | 4425 | if (!h->address || h->status < hstatus_unusable) continue; |
bd21a787 WB |
4426 | sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address); |
4427 | rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3); | |
059ec3d9 PH |
4428 | } |
4429 | ||
4430 | /* The number of bytes written. This is the same for each address. Even | |
4431 | if we sent several copies of the message down the same connection, the | |
4432 | size of each one is the same, and it's that value we have got because | |
4433 | transport_count gets reset before calling transport_write_message(). */ | |
4434 | ||
bd21a787 WB |
4435 | memcpy(big_buffer, &transport_count, sizeof(transport_count)); |
4436 | rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count)); | |
059ec3d9 | 4437 | |
6f123593 JH |
4438 | /* Information about what happened to each address. Four item types are |
4439 | used: an optional 'X' item first, for TLS information, then an optional "C" | |
4440 | item for any client-auth info followed by 'R' items for any retry settings, | |
4441 | and finally an 'A' item for the remaining data. */ | |
059ec3d9 | 4442 | |
d6c82d7b | 4443 | for(; addr; addr = addr->next) |
059ec3d9 PH |
4444 | { |
4445 | uschar *ptr; | |
4446 | retry_item *r; | |
4447 | ||
4448 | /* The certificate verification status goes into the flags */ | |
817d9f57 | 4449 | if (tls_out.certificate_verified) setflag(addr, af_cert_verified); |
a0a2d1ee | 4450 | #ifdef EXPERIMENTAL_DANE |
53a7196b | 4451 | if (tls_out.dane_verified) setflag(addr, af_dane_verified); |
a0a2d1ee | 4452 | #endif |
059ec3d9 PH |
4453 | |
4454 | /* Use an X item only if there's something to send */ | |
a7538db1 | 4455 | #ifdef SUPPORT_TLS |
9d1c15ef | 4456 | if (addr->cipher) |
059ec3d9 | 4457 | { |
e6d2a989 | 4458 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1; |
9d1c15ef JH |
4459 | if (!addr->peerdn) |
4460 | *ptr++ = 0; | |
4461 | else | |
059ec3d9 | 4462 | { |
e6d2a989 JH |
4463 | ptr += sprintf(CS ptr, "%.512s", addr->peerdn); |
4464 | ptr++; | |
059ec3d9 | 4465 | } |
9d1c15ef | 4466 | |
bd21a787 | 4467 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); |
059ec3d9 | 4468 | } |
9d1c15ef JH |
4469 | if (addr->peercert) |
4470 | { | |
4471 | ptr = big_buffer; | |
9d1c15ef JH |
4472 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert)) |
4473 | while(*ptr++); | |
4474 | else | |
4475 | *ptr++ = 0; | |
bd21a787 | 4476 | rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer); |
9d1c15ef JH |
4477 | } |
4478 | if (addr->ourcert) | |
4479 | { | |
4480 | ptr = big_buffer; | |
9d1c15ef JH |
4481 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert)) |
4482 | while(*ptr++); | |
4483 | else | |
4484 | *ptr++ = 0; | |
bd21a787 | 4485 | rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer); |
9d1c15ef | 4486 | } |
a7538db1 | 4487 | # ifndef DISABLE_OCSP |
018058b2 JH |
4488 | if (addr->ocsp > OCSP_NOT_REQ) |
4489 | { | |
e6d2a989 | 4490 | ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1; |
bd21a787 | 4491 | rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer); |
018058b2 | 4492 | } |
a7538db1 JH |
4493 | # endif |
4494 | #endif /*SUPPORT_TLS*/ | |
059ec3d9 | 4495 | |
6f123593 JH |
4496 | if (client_authenticator) |
4497 | { | |
e6d2a989 | 4498 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1; |
bd21a787 | 4499 | rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer); |
6f123593 JH |
4500 | } |
4501 | if (client_authenticated_id) | |
4502 | { | |
e6d2a989 | 4503 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1; |
bd21a787 | 4504 | rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer); |
6f123593 | 4505 | } |
c8e2fc1e JH |
4506 | if (client_authenticated_sender) |
4507 | { | |
e6d2a989 | 4508 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1; |
bd21a787 | 4509 | rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer); |
c8e2fc1e | 4510 | } |
6f123593 | 4511 | |
a7538db1 | 4512 | #ifndef DISABLE_PRDR |
783b385f | 4513 | if (addr->flags & af_prdr_used) |
bd21a787 | 4514 | rmt_dlv_checked_write(fd, 'P', '0', NULL, 0); |
b75960c8 | 4515 | #endif |
fd98a5c6 | 4516 | |
bd21a787 WB |
4517 | memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware)); |
4518 | rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware)); | |
6c1c3d1d | 4519 | DEBUG(D_deliver) debug_printf("DSN write: addr->dsn_aware = %d\n", addr->dsn_aware); |
6c1c3d1d | 4520 | |
059ec3d9 PH |
4521 | /* Retry information: for most success cases this will be null. */ |
4522 | ||
d6c82d7b | 4523 | for (r = addr->retries; r; r = r->next) |
059ec3d9 | 4524 | { |
bd21a787 | 4525 | sprintf(CS big_buffer, "%c%.500s", r->flags, r->key); |
059ec3d9 PH |
4526 | ptr = big_buffer + Ustrlen(big_buffer+2) + 3; |
4527 | memcpy(ptr, &(r->basic_errno), sizeof(r->basic_errno)); | |
4528 | ptr += sizeof(r->basic_errno); | |
4529 | memcpy(ptr, &(r->more_errno), sizeof(r->more_errno)); | |
4530 | ptr += sizeof(r->more_errno); | |
d6c82d7b | 4531 | if (!r->message) *ptr++ = 0; else |
059ec3d9 PH |
4532 | { |
4533 | sprintf(CS ptr, "%.512s", r->message); | |
4534 | while(*ptr++); | |
4535 | } | |
bd21a787 | 4536 | rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4537 | } |
4538 | ||
e6d2a989 JH |
4539 | #ifdef SUPPORT_SOCKS |
4540 | if (LOGGING(proxy) && proxy_session) | |
4541 | { | |
4542 | ptr = big_buffer; | |
4543 | if (proxy_local_address) | |
4544 | { | |
4545 | DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address); | |
4546 | ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1; | |
4547 | DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port); | |
4548 | memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port)); | |
4549 | ptr += sizeof(proxy_local_port); | |
4550 | } | |
4551 | else | |
4552 | *ptr++ = '\0'; | |
4553 | rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer); | |
4554 | } | |
4555 | #endif | |
4556 | ||
895fbaf2 JH |
4557 | #ifdef EXPERIMENTAL_DSN_INFO |
4558 | /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */ | |
4559 | if (addr->smtp_greeting) | |
4560 | { | |
895fbaf2 | 4561 | DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting); |
e6d2a989 | 4562 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1; |
895fbaf2 JH |
4563 | if (addr->helo_response) |
4564 | { | |
4565 | DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response); | |
e6d2a989 | 4566 | ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1; |
895fbaf2 JH |
4567 | } |
4568 | else | |
4569 | *ptr++ = '\0'; | |
4570 | rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer); | |
4571 | } | |
4572 | #endif | |
4573 | ||
4574 | /* The rest of the information goes in an 'A0' item. */ | |
059ec3d9 | 4575 | |
e6d2a989 | 4576 | sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action); |
895fbaf2 | 4577 | ptr = big_buffer + 2; |
059ec3d9 PH |
4578 | memcpy(ptr, &(addr->basic_errno), sizeof(addr->basic_errno)); |
4579 | ptr += sizeof(addr->basic_errno); | |
4580 | memcpy(ptr, &(addr->more_errno), sizeof(addr->more_errno)); | |
4581 | ptr += sizeof(addr->more_errno); | |
4582 | memcpy(ptr, &(addr->flags), sizeof(addr->flags)); | |
4583 | ptr += sizeof(addr->flags); | |
4584 | ||
d6c82d7b | 4585 | if (!addr->message) *ptr++ = 0; else |
e6d2a989 | 4586 | ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1; |
059ec3d9 | 4587 | |
d6c82d7b | 4588 | if (!addr->user_message) *ptr++ = 0; else |
e6d2a989 | 4589 | ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1; |
059ec3d9 | 4590 | |
d6c82d7b | 4591 | if (!addr->host_used) *ptr++ = 0; else |
059ec3d9 | 4592 | { |
e6d2a989 JH |
4593 | ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1; |
4594 | ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1; | |
059ec3d9 PH |
4595 | memcpy(ptr, &(addr->host_used->port), sizeof(addr->host_used->port)); |
4596 | ptr += sizeof(addr->host_used->port); | |
783b385f JH |
4597 | |
4598 | /* DNS lookup status */ | |
4599 | *ptr++ = addr->host_used->dnssec==DS_YES ? '2' | |
4600 | : addr->host_used->dnssec==DS_NO ? '1' : '0'; | |
4601 | ||
059ec3d9 | 4602 | } |
bd21a787 | 4603 | rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4604 | } |
4605 | ||
aeaf5db3 | 4606 | /* Local interface address/port */ |
895fbaf2 JH |
4607 | #ifdef EXPERIMENTAL_DSN_INFO |
4608 | if (sending_ip_address) | |
4609 | #else | |
6c6d6e48 | 4610 | if (LOGGING(incoming_interface) && sending_ip_address) |
895fbaf2 | 4611 | #endif |
aeaf5db3 | 4612 | { |
e6d2a989 JH |
4613 | uschar * ptr; |
4614 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1; | |
4615 | ptr += sprintf(CS ptr, "%d", sending_port) + 1; | |
aeaf5db3 JH |
4616 | rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer); |
4617 | } | |
4618 | ||
059ec3d9 PH |
4619 | /* Add termination flag, close the pipe, and that's it. The character |
4620 | after 'Z' indicates whether continue_transport is now NULL or not. | |
4621 | A change from non-NULL to NULL indicates a problem with a continuing | |
4622 | connection. */ | |
4623 | ||
d6c82d7b | 4624 | big_buffer[0] = continue_transport ? '1' : '0'; |
bd21a787 | 4625 | rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1); |
f1e894f3 | 4626 | (void)close(fd); |
059ec3d9 PH |
4627 | exit(EXIT_SUCCESS); |
4628 | } | |
4629 | ||
4630 | /* Back in the mainline: close the unwanted half of the pipe. */ | |
4631 | ||
f1e894f3 | 4632 | (void)close(pfd[pipe_write]); |
059ec3d9 PH |
4633 | |
4634 | /* Fork failed; defer with error message */ | |
4635 | ||
4636 | if (pid < 0) | |
4637 | { | |
f1e894f3 | 4638 | (void)close(pfd[pipe_read]); |
d6c82d7b JH |
4639 | panicmsg = string_sprintf("fork failed for remote delivery to %s: %s", |
4640 | addr->domain, strerror(errno)); | |
fa41615d | 4641 | goto enq_continue; |
059ec3d9 PH |
4642 | } |
4643 | ||
4644 | /* Fork succeeded; increment the count, and remember relevant data for | |
4645 | when the process finishes. */ | |
4646 | ||
4647 | parcount++; | |
4648 | parlist[poffset].addrlist = parlist[poffset].addr = addr; | |
4649 | parlist[poffset].pid = pid; | |
4650 | parlist[poffset].fd = pfd[pipe_read]; | |
4651 | parlist[poffset].done = FALSE; | |
4652 | parlist[poffset].msg = NULL; | |
4653 | parlist[poffset].return_path = return_path; | |
4654 | ||
4655 | /* If the process we've just started is sending a message down an existing | |
4656 | channel, wait for it now. This ensures that only one such process runs at | |
4657 | once, whatever the value of remote_max parallel. Otherwise, we might try to | |
4658 | send two or more messages simultaneously down the same channel. This could | |
4659 | happen if there are different domains that include the same host in otherwise | |
4660 | different host lists. | |
4661 | ||
4662 | Also, if the transport closes down the channel, this information gets back | |
4663 | (continue_transport gets set to NULL) before we consider any other addresses | |
4664 | in this message. */ | |
4665 | ||
d6c82d7b | 4666 | if (continue_transport) par_reduce(0, fallback); |
059ec3d9 PH |
4667 | |
4668 | /* Otherwise, if we are running in the test harness, wait a bit, to let the | |
4669 | newly created process get going before we create another process. This should | |
4670 | ensure repeatability in the tests. We only need to wait a tad. */ | |
4671 | ||
4672 | else if (running_in_test_harness) millisleep(500); | |
d6c82d7b JH |
4673 | |
4674 | continue; | |
4675 | ||
fa41615d JH |
4676 | enq_continue: |
4677 | if (serialize_key) enq_end(serialize_key); | |
d6c82d7b JH |
4678 | panic_continue: |
4679 | remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback); | |
4680 | continue; | |
059ec3d9 PH |
4681 | } |
4682 | ||
4683 | /* Reached the end of the list of addresses. Wait for all the subprocesses that | |
4684 | are still running and post-process their addresses. */ | |
4685 | ||
4686 | par_reduce(0, fallback); | |
4687 | return TRUE; | |
4688 | } | |
4689 | ||
4690 | ||
4691 | ||
4692 | ||
4693 | /************************************************* | |
4694 | * Split an address into local part and domain * | |
4695 | *************************************************/ | |
4696 | ||
4697 | /* This function initializes an address for routing by splitting it up into a | |
4698 | local part and a domain. The local part is set up twice - once in its original | |
4699 | casing, and once in lower case, and it is dequoted. We also do the "percent | |
4700 | hack" for configured domains. This may lead to a DEFER result if a lookup | |
4701 | defers. When a percent-hacking takes place, we insert a copy of the original | |
4702 | address as a new parent of this address, as if we have had a redirection. | |
4703 | ||
4704 | Argument: | |
4705 | addr points to an addr_item block containing the address | |
4706 | ||
4707 | Returns: OK | |
4708 | DEFER - could not determine if domain is %-hackable | |
4709 | */ | |
4710 | ||
4711 | int | |
4712 | deliver_split_address(address_item *addr) | |
4713 | { | |
4714 | uschar *address = addr->address; | |
4715 | uschar *domain = Ustrrchr(address, '@'); | |
4716 | uschar *t; | |
4717 | int len = domain - address; | |
4718 | ||
4719 | addr->domain = string_copylc(domain+1); /* Domains are always caseless */ | |
4720 | ||
4721 | /* The implication in the RFCs (though I can't say I've seen it spelled out | |
4722 | explicitly) is that quoting should be removed from local parts at the point | |
4723 | where they are locally interpreted. [The new draft "821" is more explicit on | |
4724 | this, Jan 1999.] We know the syntax is valid, so this can be done by simply | |
4725 | removing quoting backslashes and any unquoted doublequotes. */ | |
4726 | ||
4727 | t = addr->cc_local_part = store_get(len+1); | |
4728 | while(len-- > 0) | |
4729 | { | |
4730 | register int c = *address++; | |
4731 | if (c == '\"') continue; | |
4732 | if (c == '\\') | |
4733 | { | |
4734 | *t++ = *address++; | |
4735 | len--; | |
4736 | } | |
4737 | else *t++ = c; | |
4738 | } | |
4739 | *t = 0; | |
4740 | ||
4741 | /* We do the percent hack only for those domains that are listed in | |
4742 | percent_hack_domains. A loop is required, to copy with multiple %-hacks. */ | |
4743 | ||
d6c82d7b | 4744 | if (percent_hack_domains) |
059ec3d9 PH |
4745 | { |
4746 | int rc; | |
4747 | uschar *new_address = NULL; | |
4748 | uschar *local_part = addr->cc_local_part; | |
4749 | ||
4750 | deliver_domain = addr->domain; /* set $domain */ | |
4751 | ||
d6c82d7b JH |
4752 | while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0, |
4753 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) | |
4754 | == OK | |
4755 | && (t = Ustrrchr(local_part, '%')) != NULL | |
4756 | ) | |
059ec3d9 PH |
4757 | { |
4758 | new_address = string_copy(local_part); | |
4759 | new_address[t - local_part] = '@'; | |
4760 | deliver_domain = string_copylc(t+1); | |
4761 | local_part = string_copyn(local_part, t - local_part); | |
4762 | } | |
4763 | ||
4764 | if (rc == DEFER) return DEFER; /* lookup deferred */ | |
4765 | ||
4766 | /* If hackery happened, set up new parent and alter the current address. */ | |
4767 | ||
d6c82d7b | 4768 | if (new_address) |
059ec3d9 PH |
4769 | { |
4770 | address_item *new_parent = store_get(sizeof(address_item)); | |
4771 | *new_parent = *addr; | |
4772 | addr->parent = new_parent; | |
4773 | addr->address = new_address; | |
4774 | addr->unique = string_copy(new_address); | |
4775 | addr->domain = deliver_domain; | |
4776 | addr->cc_local_part = local_part; | |
4777 | DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n", | |
4778 | addr->address); | |
4779 | } | |
4780 | } | |
4781 | ||
4782 | /* Create the lowercased version of the final local part, and make that the | |
4783 | default one to be used. */ | |
4784 | ||
4785 | addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part); | |
4786 | return OK; | |
4787 | } | |
4788 | ||
4789 | ||
4790 | ||
4791 | ||
4792 | /************************************************* | |
4793 | * Get next error message text * | |
4794 | *************************************************/ | |
4795 | ||
4796 | /* If f is not NULL, read the next "paragraph", from a customized error message | |
4797 | text file, terminated by a line containing ****, and expand it. | |
4798 | ||
4799 | Arguments: | |
4800 | f NULL or a file to read from | |
4801 | which string indicating which string (for errors) | |
4802 | ||
4803 | Returns: NULL or an expanded string | |
4804 | */ | |
4805 | ||
4806 | static uschar * | |
4807 | next_emf(FILE *f, uschar *which) | |
4808 | { | |
4809 | int size = 256; | |
4810 | int ptr = 0; | |
4811 | uschar *para, *yield; | |
4812 | uschar buffer[256]; | |
4813 | ||
d6c82d7b | 4814 | if (!f) return NULL; |
059ec3d9 | 4815 | |
d6c82d7b JH |
4816 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
4817 | return NULL; | |
059ec3d9 PH |
4818 | |
4819 | para = store_get(size); | |
4820 | for (;;) | |
4821 | { | |
c2f669a4 | 4822 | para = string_cat(para, &size, &ptr, buffer); |
d6c82d7b JH |
4823 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
4824 | break; | |
059ec3d9 PH |
4825 | } |
4826 | para[ptr] = 0; | |
4827 | ||
d6c82d7b JH |
4828 | if ((yield = expand_string(para))) |
4829 | return yield; | |
059ec3d9 PH |
4830 | |
4831 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from " | |
4832 | "bounce_message_file or warn_message_file (%s): %s", which, | |
4833 | expand_string_message); | |
4834 | return NULL; | |
4835 | } | |
4836 | ||
4837 | ||
4838 | ||
4839 | ||
4840 | /************************************************* | |
4841 | * Close down a passed transport channel * | |
4842 | *************************************************/ | |
4843 | ||
4844 | /* This function is called when a passed transport channel cannot be used. | |
4845 | It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED | |
4846 | so that the function call can be the argument of a "return" statement. | |
4847 | ||
4848 | Arguments: None | |
4849 | Returns: DELIVER_NOT_ATTEMPTED | |
4850 | */ | |
4851 | ||
4852 | static int | |
4853 | continue_closedown(void) | |
4854 | { | |
d6c82d7b | 4855 | if (continue_transport) |
059ec3d9 PH |
4856 | { |
4857 | transport_instance *t; | |
d6c82d7b | 4858 | for (t = transports; t; t = t->next) |
059ec3d9 PH |
4859 | if (Ustrcmp(t->name, continue_transport) == 0) |
4860 | { | |
d6c82d7b | 4861 | if (t->info->closedown) (t->info->closedown)(t); |
059ec3d9 PH |
4862 | break; |
4863 | } | |
059ec3d9 PH |
4864 | } |
4865 | return DELIVER_NOT_ATTEMPTED; | |
4866 | } | |
4867 | ||
4868 | ||
4869 | ||
4870 | ||
4871 | /************************************************* | |
4872 | * Print address information * | |
4873 | *************************************************/ | |
4874 | ||
4875 | /* This function is called to output an address, or information about an | |
4876 | address, for bounce or defer messages. If the hide_child flag is set, all we | |
4877 | output is the original ancestor address. | |
4878 | ||
4879 | Arguments: | |
4880 | addr points to the address | |
4881 | f the FILE to print to | |
4882 | si an initial string | |
4883 | sc a continuation string for before "generated" | |
4884 | se an end string | |
4885 | ||
4886 | Returns: TRUE if the address is not hidden | |
4887 | */ | |
4888 | ||
4889 | static BOOL | |
4890 | print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc, | |
4891 | uschar *se) | |
4892 | { | |
4893 | BOOL yield = TRUE; | |
4894 | uschar *printed = US""; | |
4895 | address_item *ancestor = addr; | |
d6c82d7b | 4896 | while (ancestor->parent) ancestor = ancestor->parent; |
059ec3d9 PH |
4897 | |
4898 | fprintf(f, "%s", CS si); | |
4899 | ||
d6c82d7b | 4900 | if (addr->parent && testflag(addr, af_hide_child)) |
059ec3d9 PH |
4901 | { |
4902 | printed = US"an undisclosed address"; | |
4903 | yield = FALSE; | |
4904 | } | |
d6c82d7b | 4905 | else if (!testflag(addr, af_pfr) || !addr->parent) |
059ec3d9 PH |
4906 | printed = addr->address; |
4907 | ||
4908 | else | |
4909 | { | |
4910 | uschar *s = addr->address; | |
4911 | uschar *ss; | |
4912 | ||
4913 | if (addr->address[0] == '>') { ss = US"mail"; s++; } | |
4914 | else if (addr->address[0] == '|') ss = US"pipe"; | |
4915 | else ss = US"save"; | |
4916 | ||
4917 | fprintf(f, "%s to %s%sgenerated by ", ss, s, sc); | |
4918 | printed = addr->parent->address; | |
4919 | } | |
4920 | ||
4921 | fprintf(f, "%s", CS string_printing(printed)); | |
4922 | ||
4923 | if (ancestor != addr) | |
4924 | { | |
d6c82d7b JH |
4925 | uschar *original = ancestor->onetime_parent; |
4926 | if (!original) original= ancestor->address; | |
059ec3d9 PH |
4927 | if (strcmpic(original, printed) != 0) |
4928 | fprintf(f, "%s(%sgenerated from %s)", sc, | |
d6c82d7b | 4929 | ancestor != addr->parent ? "ultimately " : "", |
059ec3d9 PH |
4930 | string_printing(original)); |
4931 | } | |
4932 | ||
c562fd30 JH |
4933 | if (addr->host_used) |
4934 | fprintf(f, "\n host %s [%s]", | |
4935 | addr->host_used->name, addr->host_used->address); | |
4936 | ||
059ec3d9 PH |
4937 | fprintf(f, "%s", CS se); |
4938 | return yield; | |
4939 | } | |
4940 | ||
4941 | ||
4942 | ||
4943 | ||
4944 | ||
059ec3d9 PH |
4945 | /************************************************* |
4946 | * Print error for an address * | |
4947 | *************************************************/ | |
4948 | ||
4949 | /* This function is called to print the error information out of an address for | |
4950 | a bounce or a warning message. It tries to format the message reasonably by | |
4951 | introducing newlines. All lines are indented by 4; the initial printing | |
4952 | position must be set before calling. | |
4953 | ||
447d236c | 4954 | This function used always to print the error. Nowadays we want to restrict it |
75def545 PH |
4955 | to cases such as LMTP/SMTP errors from a remote host, and errors from :fail: |
4956 | and filter "fail". We no longer pass other information willy-nilly in bounce | |
4957 | and warning messages. Text in user_message is always output; text in message | |
4958 | only if the af_pass_message flag is set. | |
447d236c | 4959 | |
059ec3d9 | 4960 | Arguments: |
447d236c | 4961 | addr the address |
059ec3d9 | 4962 | f the FILE to print on |
75def545 | 4963 | t some leading text |
059ec3d9 PH |
4964 | |
4965 | Returns: nothing | |
4966 | */ | |
4967 | ||
4968 | static void | |
447d236c | 4969 | print_address_error(address_item *addr, FILE *f, uschar *t) |
059ec3d9 | 4970 | { |
447d236c | 4971 | int count = Ustrlen(t); |
75def545 | 4972 | uschar *s = testflag(addr, af_pass_message)? addr->message : NULL; |
447d236c | 4973 | |
0ba0ee97 JH |
4974 | if (!s && !(s = addr->user_message)) |
4975 | return; | |
447d236c PH |
4976 | |
4977 | fprintf(f, "\n %s", t); | |
4978 | ||
0ba0ee97 | 4979 | while (*s) |
447d236c PH |
4980 | if (*s == '\\' && s[1] == 'n') |
4981 | { | |
4982 | fprintf(f, "\n "); | |
4983 | s += 2; | |
4984 | count = 0; | |
4985 | } | |
4986 | else | |
059ec3d9 | 4987 | { |
447d236c PH |
4988 | fputc(*s, f); |
4989 | count++; | |
4990 | if (*s++ == ':' && isspace(*s) && count > 45) | |
059ec3d9 | 4991 | { |
447d236c | 4992 | fprintf(f, "\n "); /* sic (because space follows) */ |
059ec3d9 PH |
4993 | count = 0; |
4994 | } | |
059ec3d9 | 4995 | } |
059ec3d9 PH |
4996 | } |
4997 | ||
4998 | ||
21bc4865 WB |
4999 | /*********************************************************** |
5000 | * Print Diagnostic-Code for an address * | |
5001 | ************************************************************/ | |
5002 | ||
5003 | /* This function is called to print the error information out of an address for | |
5004 | a bounce or a warning message. It tries to format the message reasonably as | |
5005 | required by RFC 3461 by adding a space after each newline | |
5006 | ||
ca410e79 WB |
5007 | it uses the same logic as print_address_error() above. if af_pass_message is true |
5008 | and addr->message is set it uses the remote host answer. if not addr->user_message | |
5009 | is used instead if available. | |
21bc4865 WB |
5010 | |
5011 | Arguments: | |
5012 | addr the address | |
5013 | f the FILE to print on | |
5014 | ||
5015 | Returns: nothing | |
5016 | */ | |
5017 | ||
5018 | static void | |
5019 | print_dsn_diagnostic_code(const address_item *addr, FILE *f) | |
5020 | { | |
ca410e79 | 5021 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
21bc4865 | 5022 | |
ca410e79 WB |
5023 | /* af_pass_message and addr->message set ? print remote host answer */ |
5024 | if (s) | |
5025 | { | |
5026 | DEBUG(D_deliver) | |
5027 | debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message); | |
447d236c | 5028 | |
ca410e79 WB |
5029 | /* search first ": ". we assume to find the remote-MTA answer there */ |
5030 | if (!(s = Ustrstr(addr->message, ": "))) | |
5031 | return; /* not found, bail out */ | |
5032 | s += 2; /* skip ": " */ | |
5033 | fprintf(f, "Diagnostic-Code: smtp; "); | |
5034 | } | |
ca410e79 | 5035 | /* no message available. do nothing */ |
9031f51a | 5036 | else return; |
21bc4865 | 5037 | |
21bc4865 WB |
5038 | while (*s) |
5039 | if (*s == '\\' && s[1] == 'n') | |
5040 | { | |
5041 | fputs("\n ", f); /* as defined in RFC 3461 */ | |
5042 | s += 2; | |
5043 | } | |
5044 | else | |
5045 | fputc(*s++, f); | |
5046 | ||
5047 | fputc('\n', f); | |
5048 | } | |
447d236c PH |
5049 | |
5050 | ||
d7174846 PH |
5051 | /************************************************* |
5052 | * Check list of addresses for duplication * | |
5053 | *************************************************/ | |
5054 | ||
5055 | /* This function was introduced when the test for duplicate addresses that are | |
5056 | not pipes, files, or autoreplies was moved from the middle of routing to when | |
5057 | routing was complete. That was to fix obscure cases when the routing history | |
dbcef0ea PH |
5058 | affects the subsequent routing of identical addresses. This function is called |
5059 | after routing, to check that the final routed addresses are not duplicates. | |
d7174846 | 5060 | |
dbcef0ea PH |
5061 | If we detect a duplicate, we remember what it is a duplicate of. Note that |
5062 | pipe, file, and autoreply de-duplication is handled during routing, so we must | |
5063 | leave such "addresses" alone here, as otherwise they will incorrectly be | |
5064 | discarded. | |
d7174846 PH |
5065 | |
5066 | Argument: address of list anchor | |
5067 | Returns: nothing | |
5068 | */ | |
5069 | ||
5070 | static void | |
5071 | do_duplicate_check(address_item **anchor) | |
5072 | { | |
5073 | address_item *addr; | |
d6c82d7b | 5074 | while ((addr = *anchor)) |
d7174846 PH |
5075 | { |
5076 | tree_node *tnode; | |
5077 | if (testflag(addr, af_pfr)) | |
5078 | { | |
5079 | anchor = &(addr->next); | |
5080 | } | |
d6c82d7b | 5081 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
d7174846 PH |
5082 | { |
5083 | DEBUG(D_deliver|D_route) | |
5084 | debug_printf("%s is a duplicate address: discarded\n", addr->unique); | |
5085 | *anchor = addr->next; | |
5086 | addr->dupof = tnode->data.ptr; | |
5087 | addr->next = addr_duplicate; | |
5088 | addr_duplicate = addr; | |
5089 | } | |
5090 | else | |
5091 | { | |
5092 | tree_add_duplicate(addr->unique, addr); | |
5093 | anchor = &(addr->next); | |
5094 | } | |
5095 | } | |
5096 | } | |
5097 | ||
5098 | ||
5099 | ||
059ec3d9 PH |
5100 | |
5101 | /************************************************* | |
5102 | * Deliver one message * | |
5103 | *************************************************/ | |
5104 | ||
5105 | /* This is the function which is called when a message is to be delivered. It | |
5106 | is passed the id of the message. It is possible that the message no longer | |
5107 | exists, if some other process has delivered it, and it is also possible that | |
5108 | the message is being worked on by another process, in which case the data file | |
5109 | will be locked. | |
5110 | ||
5111 | If no delivery is attempted for any of the above reasons, the function returns | |
5112 | DELIVER_NOT_ATTEMPTED. | |
5113 | ||
5114 | If the give_up flag is set true, do not attempt any deliveries, but instead | |
5115 | fail all outstanding addresses and return the message to the sender (or | |
5116 | whoever). | |
5117 | ||
5118 | A delivery operation has a process all to itself; we never deliver more than | |
5119 | one message in the same process. Therefore we needn't worry too much about | |
5120 | store leakage. | |
5121 | ||
5122 | Arguments: | |
5123 | id the id of the message to be delivered | |
5124 | forced TRUE if delivery was forced by an administrator; this overrides | |
5125 | retry delays and causes a delivery to be tried regardless | |
5126 | give_up TRUE if an administrator has requested that delivery attempts | |
5127 | be abandoned | |
5128 | ||
5129 | Returns: When the global variable mua_wrapper is FALSE: | |
5130 | DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made | |
5131 | DELIVER_NOT_ATTEMPTED otherwise (see comment above) | |
5132 | When the global variable mua_wrapper is TRUE: | |
5133 | DELIVER_MUA_SUCCEEDED if delivery succeeded | |
5134 | DELIVER_MUA_FAILED if delivery failed | |
5135 | DELIVER_NOT_ATTEMPTED if not attempted (should not occur) | |
5136 | */ | |
5137 | ||
5138 | int | |
5139 | deliver_message(uschar *id, BOOL forced, BOOL give_up) | |
5140 | { | |
5141 | int i, rc; | |
5142 | int final_yield = DELIVER_ATTEMPTED_NORMAL; | |
5143 | time_t now = time(NULL); | |
5144 | address_item *addr_last = NULL; | |
5145 | uschar *filter_message = NULL; | |
5146 | FILE *jread; | |
5147 | int process_recipients = RECIP_ACCEPT; | |
5148 | open_db dbblock; | |
5149 | open_db *dbm_file; | |
faa05a93 | 5150 | extern int acl_where; |
059ec3d9 | 5151 | |
d6c82d7b JH |
5152 | uschar *info = queue_run_pid == (pid_t)0 |
5153 | ? string_sprintf("delivering %s", id) | |
5154 | : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid); | |
059ec3d9 PH |
5155 | |
5156 | /* If the D_process_info bit is on, set_process_info() will output debugging | |
5157 | information. If not, we want to show this initial information if D_deliver or | |
5158 | D_queue_run is set or in verbose mode. */ | |
5159 | ||
5160 | set_process_info("%s", info); | |
5161 | ||
d6c82d7b JH |
5162 | if ( !(debug_selector & D_process_info) |
5163 | && (debug_selector & (D_deliver|D_queue_run|D_v)) | |
5164 | ) | |
059ec3d9 PH |
5165 | debug_printf("%s\n", info); |
5166 | ||
5167 | /* Ensure that we catch any subprocesses that are created. Although Exim | |
5168 | sets SIG_DFL as its initial default, some routes through the code end up | |
5169 | here with it set to SIG_IGN - cases where a non-synchronous delivery process | |
5170 | has been forked, but no re-exec has been done. We use sigaction rather than | |
5171 | plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be | |
5172 | sure it is turned off. (There was a problem on AIX with this.) */ | |
5173 | ||
5174 | #ifdef SA_NOCLDWAIT | |
5175 | { | |
5176 | struct sigaction act; | |
5177 | act.sa_handler = SIG_DFL; | |
5178 | sigemptyset(&(act.sa_mask)); | |
5179 | act.sa_flags = 0; | |
5180 | sigaction(SIGCHLD, &act, NULL); | |
5181 | } | |
5182 | #else | |
5183 | signal(SIGCHLD, SIG_DFL); | |
5184 | #endif | |
5185 | ||
5186 | /* Make the forcing flag available for routers and transports, set up the | |
5187 | global message id field, and initialize the count for returned files and the | |
5188 | message size. This use of strcpy() is OK because the length id is checked when | |
5189 | it is obtained from a command line (the -M or -q options), and otherwise it is | |
5190 | known to be a valid message id. */ | |
5191 | ||
5192 | Ustrcpy(message_id, id); | |
5193 | deliver_force = forced; | |
5194 | return_count = 0; | |
5195 | message_size = 0; | |
5196 | ||
5197 | /* Initialize some flags */ | |
5198 | ||
5199 | update_spool = FALSE; | |
5200 | remove_journal = TRUE; | |
5201 | ||
faa05a93 JH |
5202 | /* Set a known context for any ACLs we call via expansions */ |
5203 | acl_where = ACL_WHERE_DELIVERY; | |
5204 | ||
059ec3d9 PH |
5205 | /* Reset the random number generator, so that if several delivery processes are |
5206 | started from a queue runner that has already used random numbers (for sorting), | |
5207 | they don't all get the same sequence. */ | |
5208 | ||
5209 | random_seed = 0; | |
5210 | ||
5211 | /* Open and lock the message's data file. Exim locks on this one because the | |
5212 | header file may get replaced as it is re-written during the delivery process. | |
5213 | Any failures cause messages to be written to the log, except for missing files | |
5214 | while queue running - another process probably completed delivery. As part of | |
5215 | opening the data file, message_subdir gets set. */ | |
5216 | ||
789f8a4f | 5217 | if ((deliver_datafile = spool_open_datafile(id)) < 0) |
059ec3d9 PH |
5218 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5219 | ||
5220 | /* The value of message_size at this point has been set to the data length, | |
5221 | plus one for the blank line that notionally precedes the data. */ | |
5222 | ||
5223 | /* Now read the contents of the header file, which will set up the headers in | |
5224 | store, and also the list of recipients and the tree of non-recipients and | |
5225 | assorted flags. It updates message_size. If there is a reading or format error, | |
5226 | give up; if the message has been around for sufficiently long, remove it. */ | |
5227 | ||
5228 | sprintf(CS spoolname, "%s-H", id); | |
5229 | if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK) | |
5230 | { | |
5231 | if (errno == ERRNO_SPOOLFORMAT) | |
5232 | { | |
5233 | struct stat statbuf; | |
a2da3176 JH |
5234 | sprintf(CS big_buffer, "%s/input/%s/%s/%s", |
5235 | spool_directory, queue_name, message_subdir, spoolname); | |
059ec3d9 | 5236 | if (Ustat(big_buffer, &statbuf) == 0) |
b1c749bb PH |
5237 | log_write(0, LOG_MAIN, "Format error in spool file %s: " |
5238 | "size=" OFF_T_FMT, spoolname, statbuf.st_size); | |
059ec3d9 PH |
5239 | else log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname); |
5240 | } | |
5241 | else | |
5242 | log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname, | |
5243 | strerror(errno)); | |
5244 | ||
5245 | /* If we managed to read the envelope data, received_time contains the | |
5246 | time the message was received. Otherwise, we can calculate it from the | |
5247 | message id. */ | |
5248 | ||
5249 | if (rc != spool_read_hdrerror) | |
5250 | { | |
5251 | received_time = 0; | |
5252 | for (i = 0; i < 6; i++) | |
5253 | received_time = received_time * BASE_62 + tab62[id[i] - '0']; | |
5254 | } | |
5255 | ||
5256 | /* If we've had this malformed message too long, sling it. */ | |
5257 | ||
5258 | if (now - received_time > keep_malformed) | |
5259 | { | |
a2da3176 JH |
5260 | snprintf(CS spoolname, sizeof(spoolname), "%s/msglog/%s/%s/%s", |
5261 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 | 5262 | Uunlink(spoolname); |
a2da3176 JH |
5263 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-D", |
5264 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 | 5265 | Uunlink(spoolname); |
a2da3176 JH |
5266 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-H", |
5267 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 | 5268 | Uunlink(spoolname); |
a2da3176 JH |
5269 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-J", |
5270 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 PH |
5271 | Uunlink(spoolname); |
5272 | log_write(0, LOG_MAIN, "Message removed because older than %s", | |
5273 | readconf_printtime(keep_malformed)); | |
5274 | } | |
5275 | ||
f1e894f3 | 5276 | (void)close(deliver_datafile); |
059ec3d9 PH |
5277 | deliver_datafile = -1; |
5278 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5279 | } | |
5280 | ||
5281 | /* The spool header file has been read. Look to see if there is an existing | |
5282 | journal file for this message. If there is, it means that a previous delivery | |
5283 | attempt crashed (program or host) before it could update the spool header file. | |
5284 | Read the list of delivered addresses from the journal and add them to the | |
5285 | nonrecipients tree. Then update the spool file. We can leave the journal in | |
5286 | existence, as it will get further successful deliveries added to it in this | |
5287 | run, and it will be deleted if this function gets to its end successfully. | |
5288 | Otherwise it might be needed again. */ | |
5289 | ||
a2da3176 JH |
5290 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-J", |
5291 | spool_directory, queue_name, message_subdir, id); | |
5292 | ||
5293 | if ((jread = Ufopen(spoolname, "rb"))) | |
059ec3d9 | 5294 | { |
d6c82d7b | 5295 | while (Ufgets(big_buffer, big_buffer_size, jread)) |
059ec3d9 PH |
5296 | { |
5297 | int n = Ustrlen(big_buffer); | |
5298 | big_buffer[n-1] = 0; | |
5299 | tree_add_nonrecipient(big_buffer); | |
5300 | DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from " | |
5301 | "journal file\n", big_buffer); | |
5302 | } | |
f1e894f3 | 5303 | (void)fclose(jread); |
059ec3d9 PH |
5304 | /* Panic-dies on error */ |
5305 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
5306 | } | |
5307 | else if (errno != ENOENT) | |
5308 | { | |
5309 | log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: " | |
5310 | "%s", strerror(errno)); | |
5311 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5312 | } | |
5313 | ||
5314 | /* A null recipients list indicates some kind of disaster. */ | |
5315 | ||
d6c82d7b | 5316 | if (!recipients_list) |
059ec3d9 | 5317 | { |
f1e894f3 | 5318 | (void)close(deliver_datafile); |
059ec3d9 PH |
5319 | deliver_datafile = -1; |
5320 | log_write(0, LOG_MAIN, "Spool error: no recipients for %s", spoolname); | |
5321 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5322 | } | |
5323 | ||
5324 | ||
5325 | /* Handle a message that is frozen. There are a number of different things that | |
5326 | can happen, but in the default situation, unless forced, no delivery is | |
5327 | attempted. */ | |
5328 | ||
5329 | if (deliver_freeze) | |
5330 | { | |
a7538db1 | 5331 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
059ec3d9 PH |
5332 | /* Moving to another directory removes the message from Exim's view. Other |
5333 | tools must be used to deal with it. Logging of this action happens in | |
5334 | spool_move_message() and its subfunctions. */ | |
5335 | ||
d6c82d7b JH |
5336 | if ( move_frozen_messages |
5337 | && spool_move_message(id, message_subdir, US"", US"F") | |
5338 | ) | |
059ec3d9 | 5339 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
a7538db1 | 5340 | #endif |
059ec3d9 PH |
5341 | |
5342 | /* For all frozen messages (bounces or not), timeout_frozen_after sets the | |
5343 | maximum time to keep messages that are frozen. Thaw if we reach it, with a | |
5344 | flag causing all recipients to be failed. The time is the age of the | |
5345 | message, not the time since freezing. */ | |
5346 | ||
5347 | if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after) | |
5348 | { | |
5349 | log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after"); | |
5350 | process_recipients = RECIP_FAIL_TIMEOUT; | |
5351 | } | |
5352 | ||
5353 | /* For bounce messages (and others with no sender), thaw if the error message | |
5354 | ignore timer is exceeded. The message will be discarded if this delivery | |
5355 | fails. */ | |
5356 | ||
5357 | else if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after) | |
5358 | { | |
5359 | log_write(0, LOG_MAIN, "Unfrozen by errmsg timer"); | |
5360 | } | |
5361 | ||
ef213c3b PH |
5362 | /* If this is a bounce message, or there's no auto thaw, or we haven't |
5363 | reached the auto thaw time yet, and this delivery is not forced by an admin | |
5364 | user, do not attempt delivery of this message. Note that forced is set for | |
5365 | continuing messages down the same channel, in order to skip load checking and | |
5366 | ignore hold domains, but we don't want unfreezing in that case. */ | |
059ec3d9 PH |
5367 | |
5368 | else | |
5369 | { | |
d6c82d7b JH |
5370 | if ( ( sender_address[0] == 0 |
5371 | || auto_thaw <= 0 | |
5372 | || now <= deliver_frozen_at + auto_thaw | |
5373 | ) | |
5374 | && ( !forced || !deliver_force_thaw | |
5375 | || !admin_user || continue_hostname | |
5376 | ) ) | |
059ec3d9 | 5377 | { |
f1e894f3 | 5378 | (void)close(deliver_datafile); |
059ec3d9 PH |
5379 | deliver_datafile = -1; |
5380 | log_write(L_skip_delivery, LOG_MAIN, "Message is frozen"); | |
5381 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5382 | } | |
5383 | ||
5384 | /* If delivery was forced (by an admin user), assume a manual thaw. | |
5385 | Otherwise it's an auto thaw. */ | |
5386 | ||
5387 | if (forced) | |
5388 | { | |
5389 | deliver_manual_thaw = TRUE; | |
5390 | log_write(0, LOG_MAIN, "Unfrozen by forced delivery"); | |
5391 | } | |
5392 | else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw"); | |
5393 | } | |
5394 | ||
5395 | /* We get here if any of the rules for unfreezing have triggered. */ | |
5396 | ||
5397 | deliver_freeze = FALSE; | |
5398 | update_spool = TRUE; | |
5399 | } | |
5400 | ||
5401 | ||
5402 | /* Open the message log file if we are using them. This records details of | |
5403 | deliveries, deferments, and failures for the benefit of the mail administrator. | |
5404 | The log is not used by exim itself to track the progress of a message; that is | |
5405 | done by rewriting the header spool file. */ | |
5406 | ||
5407 | if (message_logs) | |
5408 | { | |
5409 | uschar *error; | |
5410 | int fd; | |
5411 | ||
a2da3176 JH |
5412 | snprintf(CS spoolname, sizeof(spoolname), "%s/msglog/%s/%s/%s", |
5413 | spool_directory, queue_name, message_subdir, id); | |
5414 | ||
5415 | if ((fd = open_msglog_file(spoolname, SPOOL_MODE, &error)) < 0) | |
059ec3d9 PH |
5416 | { |
5417 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error, | |
5418 | spoolname, strerror(errno)); | |
5419 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5420 | } | |
5421 | ||
5422 | /* Make a C stream out of it. */ | |
5423 | ||
d6c82d7b | 5424 | if (!(message_log = fdopen(fd, "a"))) |
059ec3d9 PH |
5425 | { |
5426 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s", | |
5427 | spoolname, strerror(errno)); | |
5428 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5429 | } | |
5430 | } | |
5431 | ||
5432 | ||
5433 | /* If asked to give up on a message, log who did it, and set the action for all | |
5434 | the addresses. */ | |
5435 | ||
5436 | if (give_up) | |
5437 | { | |
5438 | struct passwd *pw = getpwuid(real_uid); | |
d6c82d7b JH |
5439 | log_write(0, LOG_MAIN, "cancelled by %s", |
5440 | pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid)); | |
059ec3d9 PH |
5441 | process_recipients = RECIP_FAIL; |
5442 | } | |
5443 | ||
5444 | /* Otherwise, if there are too many Received: headers, fail all recipients. */ | |
5445 | ||
5446 | else if (received_count > received_headers_max) | |
5447 | process_recipients = RECIP_FAIL_LOOP; | |
5448 | ||
5449 | /* Otherwise, if a system-wide, address-independent message filter is | |
5450 | specified, run it now, except in the case when we are failing all recipients as | |
5451 | a result of timeout_frozen_after. If the system filter yields "delivered", then | |
5452 | ignore the true recipients of the message. Failure of the filter file is | |
5453 | logged, and the delivery attempt fails. */ | |
5454 | ||
d6c82d7b | 5455 | else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT) |
059ec3d9 PH |
5456 | { |
5457 | int rc; | |
5458 | int filtertype; | |
5459 | ugid_block ugid; | |
5460 | redirect_block redirect; | |
5461 | ||
5462 | if (system_filter_uid_set) | |
5463 | { | |
5464 | ugid.uid = system_filter_uid; | |
5465 | ugid.gid = system_filter_gid; | |
5466 | ugid.uid_set = ugid.gid_set = TRUE; | |
5467 | } | |
5468 | else | |
5469 | { | |
5470 | ugid.uid_set = ugid.gid_set = FALSE; | |
5471 | } | |
5472 | ||
5473 | return_path = sender_address; | |
5474 | enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */ | |
5475 | system_filtering = TRUE; | |
5476 | ||
5477 | /* Any error in the filter file causes a delivery to be abandoned. */ | |
5478 | ||
5479 | redirect.string = system_filter; | |
5480 | redirect.isfile = TRUE; | |
5481 | redirect.check_owner = redirect.check_group = FALSE; | |
5482 | redirect.owners = NULL; | |
5483 | redirect.owngroups = NULL; | |
5484 | redirect.pw = NULL; | |
5485 | redirect.modemask = 0; | |
5486 | ||
5487 | DEBUG(D_deliver|D_filter) debug_printf("running system filter\n"); | |
5488 | ||
5489 | rc = rda_interpret( | |
5490 | &redirect, /* Where the data is */ | |
5491 | RDO_DEFER | /* Turn on all the enabling options */ | |
5492 | RDO_FAIL | /* Leave off all the disabling options */ | |
5493 | RDO_FILTER | | |
5494 | RDO_FREEZE | | |
5495 | RDO_REALLOG | | |
5496 | RDO_REWRITE, | |
5497 | NULL, /* No :include: restriction (not used in filter) */ | |
5498 | NULL, /* No sieve vacation directory (not sieve!) */ | |
efd9a422 | 5499 | NULL, /* No sieve enotify mailto owner (not sieve!) */ |
e4a89c47 PH |
5500 | NULL, /* No sieve user address (not sieve!) */ |
5501 | NULL, /* No sieve subaddress (not sieve!) */ | |
059ec3d9 PH |
5502 | &ugid, /* uid/gid data */ |
5503 | &addr_new, /* Where to hang generated addresses */ | |
5504 | &filter_message, /* Where to put error message */ | |
5505 | NULL, /* Don't skip syntax errors */ | |
5506 | &filtertype, /* Will always be set to FILTER_EXIM for this call */ | |
5507 | US"system filter"); /* For error messages */ | |
5508 | ||
5509 | DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc); | |
5510 | ||
5511 | if (rc == FF_ERROR || rc == FF_NONEXIST) | |
5512 | { | |
f1e894f3 | 5513 | (void)close(deliver_datafile); |
059ec3d9 PH |
5514 | deliver_datafile = -1; |
5515 | log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s", | |
5516 | string_printing(filter_message)); | |
5517 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5518 | } | |
5519 | ||
5520 | /* Reset things. If the filter message is an empty string, which can happen | |
5521 | for a filter "fail" or "freeze" command with no text, reset it to NULL. */ | |
5522 | ||
5523 | system_filtering = FALSE; | |
5524 | enable_dollar_recipients = FALSE; | |
d6c82d7b | 5525 | if (filter_message && filter_message[0] == 0) filter_message = NULL; |
059ec3d9 PH |
5526 | |
5527 | /* Save the values of the system filter variables so that user filters | |
5528 | can use them. */ | |
5529 | ||
5530 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); | |
5531 | ||
5532 | /* The filter can request that delivery of the original addresses be | |
5533 | deferred. */ | |
5534 | ||
5535 | if (rc == FF_DEFER) | |
5536 | { | |
5537 | process_recipients = RECIP_DEFER; | |
5538 | deliver_msglog("Delivery deferred by system filter\n"); | |
5539 | log_write(0, LOG_MAIN, "Delivery deferred by system filter"); | |
5540 | } | |
5541 | ||
5542 | /* The filter can request that a message be frozen, but this does not | |
5543 | take place if the message has been manually thawed. In that case, we must | |
5544 | unset "delivered", which is forced by the "freeze" command to make -bF | |
5545 | work properly. */ | |
5546 | ||
5547 | else if (rc == FF_FREEZE && !deliver_manual_thaw) | |
5548 | { | |
5549 | deliver_freeze = TRUE; | |
5550 | deliver_frozen_at = time(NULL); | |
5551 | process_recipients = RECIP_DEFER; | |
5552 | frozen_info = string_sprintf(" by the system filter%s%s", | |
d6c82d7b JH |
5553 | filter_message ? US": " : US"", |
5554 | filter_message ? filter_message : US""); | |
059ec3d9 PH |
5555 | } |
5556 | ||
5557 | /* The filter can request that a message be failed. The error message may be | |
5558 | quite long - it is sent back to the sender in the bounce - but we don't want | |
5559 | to fill up the log with repetitions of it. If it starts with << then the text | |
5560 | between << and >> is written to the log, with the rest left for the bounce | |
5561 | message. */ | |
5562 | ||
5563 | else if (rc == FF_FAIL) | |
5564 | { | |
5565 | uschar *colon = US""; | |
5566 | uschar *logmsg = US""; | |
5567 | int loglen = 0; | |
5568 | ||
5569 | process_recipients = RECIP_FAIL_FILTER; | |
5570 | ||
d6c82d7b | 5571 | if (filter_message) |
059ec3d9 PH |
5572 | { |
5573 | uschar *logend; | |
5574 | colon = US": "; | |
d6c82d7b JH |
5575 | if ( filter_message[0] == '<' |
5576 | && filter_message[1] == '<' | |
5577 | && (logend = Ustrstr(filter_message, ">>")) | |
5578 | ) | |
059ec3d9 PH |
5579 | { |
5580 | logmsg = filter_message + 2; | |
5581 | loglen = logend - logmsg; | |
5582 | filter_message = logend + 2; | |
5583 | if (filter_message[0] == 0) filter_message = NULL; | |
5584 | } | |
5585 | else | |
5586 | { | |
5587 | logmsg = filter_message; | |
5588 | loglen = Ustrlen(filter_message); | |
5589 | } | |
5590 | } | |
5591 | ||
5592 | log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen, | |
5593 | logmsg); | |
5594 | } | |
5595 | ||
5596 | /* Delivery can be restricted only to those recipients (if any) that the | |
5597 | filter specified. */ | |
5598 | ||
5599 | else if (rc == FF_DELIVERED) | |
5600 | { | |
5601 | process_recipients = RECIP_IGNORE; | |
d6c82d7b | 5602 | if (addr_new) |
059ec3d9 | 5603 | log_write(0, LOG_MAIN, "original recipients ignored (system filter)"); |
d6c82d7b JH |
5604 | else |
5605 | log_write(0, LOG_MAIN, "=> discarded (system filter)"); | |
059ec3d9 PH |
5606 | } |
5607 | ||
5608 | /* If any new addresses were created by the filter, fake up a "parent" | |
5609 | for them. This is necessary for pipes, etc., which are expected to have | |
5610 | parents, and it also gives some sensible logging for others. Allow | |
5611 | pipes, files, and autoreplies, and run them as the filter uid if set, | |
5612 | otherwise as the current uid. */ | |
5613 | ||
d6c82d7b | 5614 | if (addr_new) |
059ec3d9 PH |
5615 | { |
5616 | int uid = (system_filter_uid_set)? system_filter_uid : geteuid(); | |
5617 | int gid = (system_filter_gid_set)? system_filter_gid : getegid(); | |
5618 | ||
5619 | /* The text "system-filter" is tested in transport_set_up_command() and in | |
5620 | set_up_shell_command() in the pipe transport, to enable them to permit | |
5621 | $recipients, so don't change it here without also changing it there. */ | |
5622 | ||
5623 | address_item *p = addr_new; | |
5624 | address_item *parent = deliver_make_addr(US"system-filter", FALSE); | |
5625 | ||
5626 | parent->domain = string_copylc(qualify_domain_recipient); | |
5627 | parent->local_part = US"system-filter"; | |
5628 | ||
5629 | /* As part of this loop, we arrange for addr_last to end up pointing | |
5630 | at the final address. This is used if we go on to add addresses for the | |
5631 | original recipients. */ | |
5632 | ||
d6c82d7b | 5633 | while (p) |
059ec3d9 | 5634 | { |
4362ff0d PH |
5635 | if (parent->child_count == SHRT_MAX) |
5636 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more " | |
5637 | "than %d delivery addresses", SHRT_MAX); | |
059ec3d9 PH |
5638 | parent->child_count++; |
5639 | p->parent = parent; | |
5640 | ||
5641 | if (testflag(p, af_pfr)) | |
5642 | { | |
5643 | uschar *tpname; | |
5644 | uschar *type; | |
5645 | p->uid = uid; | |
5646 | p->gid = gid; | |
5647 | setflag(p, af_uid_set | | |
5648 | af_gid_set | | |
5649 | af_allow_file | | |
5650 | af_allow_pipe | | |
5651 | af_allow_reply); | |
5652 | ||
5653 | /* Find the name of the system filter's appropriate pfr transport */ | |
5654 | ||
5655 | if (p->address[0] == '|') | |
5656 | { | |
5657 | type = US"pipe"; | |
5658 | tpname = system_filter_pipe_transport; | |
5659 | address_pipe = p->address; | |
5660 | } | |
5661 | else if (p->address[0] == '>') | |
5662 | { | |
5663 | type = US"reply"; | |
5664 | tpname = system_filter_reply_transport; | |
5665 | } | |
5666 | else | |
5667 | { | |
5668 | if (p->address[Ustrlen(p->address)-1] == '/') | |
5669 | { | |
5670 | type = US"directory"; | |
5671 | tpname = system_filter_directory_transport; | |
5672 | } | |
5673 | else | |
5674 | { | |
5675 | type = US"file"; | |
5676 | tpname = system_filter_file_transport; | |
5677 | } | |
5678 | address_file = p->address; | |
5679 | } | |
5680 | ||
5681 | /* Now find the actual transport, first expanding the name. We have | |
5682 | set address_file or address_pipe above. */ | |
5683 | ||
d6c82d7b | 5684 | if (tpname) |
059ec3d9 PH |
5685 | { |
5686 | uschar *tmp = expand_string(tpname); | |
5687 | address_file = address_pipe = NULL; | |
d6c82d7b | 5688 | if (!tmp) |
059ec3d9 PH |
5689 | p->message = string_sprintf("failed to expand \"%s\" as a " |
5690 | "system filter transport name", tpname); | |
5691 | tpname = tmp; | |
5692 | } | |
5693 | else | |
5694 | { | |
5695 | p->message = string_sprintf("system_filter_%s_transport is unset", | |
5696 | type); | |
5697 | } | |
5698 | ||
d6c82d7b | 5699 | if (tpname) |
059ec3d9 PH |
5700 | { |
5701 | transport_instance *tp; | |
d6c82d7b | 5702 | for (tp = transports; tp; tp = tp->next) |
059ec3d9 PH |
5703 | { |
5704 | if (Ustrcmp(tp->name, tpname) == 0) | |
5705 | { | |
5706 | p->transport = tp; | |
5707 | break; | |
5708 | } | |
5709 | } | |
d6c82d7b | 5710 | if (!tp) |
059ec3d9 PH |
5711 | p->message = string_sprintf("failed to find \"%s\" transport " |
5712 | "for system filter delivery", tpname); | |
5713 | } | |
5714 | ||
5715 | /* If we couldn't set up a transport, defer the delivery, putting the | |
5716 | error on the panic log as well as the main log. */ | |
5717 | ||
d6c82d7b | 5718 | if (!p->transport) |
059ec3d9 PH |
5719 | { |
5720 | address_item *badp = p; | |
5721 | p = p->next; | |
d6c82d7b | 5722 | if (!addr_last) addr_new = p; else addr_last->next = p; |
059ec3d9 PH |
5723 | badp->local_part = badp->address; /* Needed for log line */ |
5724 | post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, DTYPE_ROUTER, 0); | |
5725 | continue; | |
5726 | } | |
5727 | } /* End of pfr handling */ | |
5728 | ||
5729 | /* Either a non-pfr delivery, or we found a transport */ | |
5730 | ||
5731 | DEBUG(D_deliver|D_filter) | |
5732 | debug_printf("system filter added %s\n", p->address); | |
5733 | ||
5734 | addr_last = p; | |
5735 | p = p->next; | |
5736 | } /* Loop through all addr_new addresses */ | |
5737 | } | |
5738 | } | |
5739 | ||
5740 | ||
5741 | /* Scan the recipients list, and for every one that is not in the non- | |
5742 | recipients tree, add an addr item to the chain of new addresses. If the pno | |
5743 | value is non-negative, we must set the onetime parent from it. This which | |
5744 | points to the relevant entry in the recipients list. | |
5745 | ||
5746 | This processing can be altered by the setting of the process_recipients | |
5747 | variable, which is changed if recipients are to be ignored, failed, or | |
5748 | deferred. This can happen as a result of system filter activity, or if the -Mg | |
5749 | option is used to fail all of them. | |
5750 | ||
5751 | Duplicate addresses are handled later by a different tree structure; we can't | |
5752 | just extend the non-recipients tree, because that will be re-written to the | |
5753 | spool if the message is deferred, and in any case there are casing | |
5754 | complications for local addresses. */ | |
5755 | ||
5756 | if (process_recipients != RECIP_IGNORE) | |
5757 | { | |
5758 | for (i = 0; i < recipients_count; i++) | |
5759 | { | |
d6c82d7b | 5760 | if (!tree_search(tree_nonrecipients, recipients_list[i].address)) |
059ec3d9 PH |
5761 | { |
5762 | recipient_item *r = recipients_list + i; | |
5763 | address_item *new = deliver_make_addr(r->address, FALSE); | |
d43cbe25 | 5764 | new->prop.errors_address = r->errors_to; |
8c5d388a | 5765 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
5766 | if ((new->prop.utf8_msg = message_smtputf8)) |
5767 | { | |
5768 | new->prop.utf8_downcvt = message_utf8_downconvert == 1; | |
5769 | new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1; | |
0ec7e948 JH |
5770 | DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n", |
5771 | new->prop.utf8_downcvt ? "yes" | |
5772 | : new->prop.utf8_downcvt_maybe ? "ifneeded" | |
5773 | : "no"); | |
3c8b3577 | 5774 | } |
7ade712c | 5775 | #endif |
059ec3d9 PH |
5776 | |
5777 | if (r->pno >= 0) | |
5778 | new->onetime_parent = recipients_list[r->pno].address; | |
5779 | ||
94431adb | 5780 | /* If DSN support is enabled, set the dsn flags and the original receipt |
6c1c3d1d WB |
5781 | to be passed on to other DSN enabled MTAs */ |
5782 | new->dsn_flags = r->dsn_flags & rf_dsnflags; | |
5783 | new->dsn_orcpt = r->orcpt; | |
f923454a JH |
5784 | DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n", |
5785 | new->dsn_orcpt, new->dsn_flags); | |
6c1c3d1d | 5786 | |
059ec3d9 PH |
5787 | switch (process_recipients) |
5788 | { | |
5789 | /* RECIP_DEFER is set when a system filter freezes a message. */ | |
5790 | ||
5791 | case RECIP_DEFER: | |
5792 | new->next = addr_defer; | |
5793 | addr_defer = new; | |
5794 | break; | |
5795 | ||
5796 | ||
5797 | /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail" | |
5798 | command. */ | |
5799 | ||
5800 | case RECIP_FAIL_FILTER: | |
5801 | new->message = | |
d6c82d7b | 5802 | filter_message ? filter_message : US"delivery cancelled"; |
447d236c | 5803 | setflag(new, af_pass_message); |
059ec3d9 PH |
5804 | goto RECIP_QUEUE_FAILED; /* below */ |
5805 | ||
5806 | ||
5807 | /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older | |
5808 | than the value in timeout_frozen_after. Treat non-bounce messages | |
5809 | similarly to -Mg; for bounce messages we just want to discard, so | |
5810 | don't put the address on the failed list. The timeout has already | |
5811 | been logged. */ | |
5812 | ||
5813 | case RECIP_FAIL_TIMEOUT: | |
5814 | new->message = US"delivery cancelled; message timed out"; | |
5815 | goto RECIP_QUEUE_FAILED; /* below */ | |
5816 | ||
5817 | ||
5818 | /* RECIP_FAIL is set when -Mg has been used. */ | |
5819 | ||
5820 | case RECIP_FAIL: | |
5821 | new->message = US"delivery cancelled by administrator"; | |
5822 | /* Fall through */ | |
5823 | ||
5824 | /* Common code for the failure cases above. If this is not a bounce | |
5825 | message, put the address on the failed list so that it is used to | |
5826 | create a bounce. Otherwise do nothing - this just discards the address. | |
5827 | The incident has already been logged. */ | |
5828 | ||
5829 | RECIP_QUEUE_FAILED: | |
5830 | if (sender_address[0] != 0) | |
5831 | { | |
5832 | new->next = addr_failed; | |
5833 | addr_failed = new; | |
5834 | } | |
5835 | break; | |
5836 | ||
5837 | ||
5838 | /* RECIP_FAIL_LOOP is set when there are too many Received: headers | |
5839 | in the message. Process each address as a routing failure; if this | |
5840 | is a bounce message, it will get frozen. */ | |
5841 | ||
5842 | case RECIP_FAIL_LOOP: | |
5843 | new->message = US"Too many \"Received\" headers - suspected mail loop"; | |
5844 | post_process_one(new, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
5845 | break; | |
5846 | ||
5847 | ||
5848 | /* Value should be RECIP_ACCEPT; take this as the safe default. */ | |
5849 | ||
5850 | default: | |
d6c82d7b | 5851 | if (!addr_new) addr_new = new; else addr_last->next = new; |
059ec3d9 PH |
5852 | addr_last = new; |
5853 | break; | |
5854 | } | |
14a465c3 | 5855 | |
0cbf2b82 | 5856 | #ifndef DISABLE_EVENT |
14a465c3 JH |
5857 | if (process_recipients != RECIP_ACCEPT) |
5858 | { | |
5859 | uschar * save_local = deliver_localpart; | |
55414b25 | 5860 | const uschar * save_domain = deliver_domain; |
14a465c3 JH |
5861 | |
5862 | deliver_localpart = expand_string( | |
5863 | string_sprintf("${local_part:%s}", new->address)); | |
5864 | deliver_domain = expand_string( | |
5865 | string_sprintf("${domain:%s}", new->address)); | |
5866 | ||
774ef2d7 | 5867 | (void) event_raise(event_action, |
14a465c3 JH |
5868 | US"msg:fail:internal", new->message); |
5869 | ||
5870 | deliver_localpart = save_local; | |
5871 | deliver_domain = save_domain; | |
5872 | } | |
5873 | #endif | |
059ec3d9 PH |
5874 | } |
5875 | } | |
5876 | } | |
5877 | ||
5878 | DEBUG(D_deliver) | |
5879 | { | |
d6c82d7b | 5880 | address_item *p; |
059ec3d9 | 5881 | debug_printf("Delivery address list:\n"); |
d6c82d7b JH |
5882 | for (p = addr_new; p; p = p->next) |
5883 | debug_printf(" %s %s\n", p->address, | |
5884 | p->onetime_parent ? p->onetime_parent : US""); | |
059ec3d9 PH |
5885 | } |
5886 | ||
5887 | /* Set up the buffers used for copying over the file when delivering. */ | |
5888 | ||
5889 | deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE); | |
5890 | deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE); | |
5891 | ||
5892 | ||
5893 | ||
5894 | /* Until there are no more new addresses, handle each one as follows: | |
5895 | ||
5896 | . If this is a generated address (indicated by the presence of a parent | |
5897 | pointer) then check to see whether it is a pipe, file, or autoreply, and | |
5898 | if so, handle it directly here. The router that produced the address will | |
5899 | have set the allow flags into the address, and also set the uid/gid required. | |
5900 | Having the routers generate new addresses and then checking them here at | |
5901 | the outer level is tidier than making each router do the checking, and | |
5902 | means that routers don't need access to the failed address queue. | |
5903 | ||
5904 | . Break up the address into local part and domain, and make lowercased | |
5905 | versions of these strings. We also make unquoted versions of the local part. | |
5906 | ||
5907 | . Handle the percent hack for those domains for which it is valid. | |
5908 | ||
5909 | . For child addresses, determine if any of the parents have the same address. | |
5910 | If so, generate a different string for previous delivery checking. Without | |
5911 | this code, if the address spqr generates spqr via a forward or alias file, | |
5912 | delivery of the generated spqr stops further attempts at the top level spqr, | |
5913 | which is not what is wanted - it may have generated other addresses. | |
5914 | ||
5915 | . Check on the retry database to see if routing was previously deferred, but | |
5916 | only if in a queue run. Addresses that are to be routed are put on the | |
5917 | addr_route chain. Addresses that are to be deferred are put on the | |
5918 | addr_defer chain. We do all the checking first, so as not to keep the | |
5919 | retry database open any longer than necessary. | |
5920 | ||
5921 | . Now we run the addresses through the routers. A router may put the address | |
5922 | on either the addr_local or the addr_remote chain for local or remote | |
5923 | delivery, respectively, or put it on the addr_failed chain if it is | |
5924 | undeliveable, or it may generate child addresses and put them on the | |
5925 | addr_new chain, or it may defer an address. All the chain anchors are | |
5926 | passed as arguments so that the routers can be called for verification | |
5927 | purposes as well. | |
5928 | ||
5929 | . If new addresses have been generated by the routers, da capo. | |
5930 | */ | |
5931 | ||
5932 | header_rewritten = FALSE; /* No headers rewritten yet */ | |
d6c82d7b | 5933 | while (addr_new) /* Loop until all addresses dealt with */ |
059ec3d9 PH |
5934 | { |
5935 | address_item *addr, *parent; | |
059ec3d9 PH |
5936 | |
5937 | /* Failure to open the retry database is treated the same as if it does | |
5938 | not exist. In both cases, dbm_file is NULL. */ | |
5939 | ||
d6c82d7b | 5940 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
059ec3d9 PH |
5941 | { |
5942 | DEBUG(D_deliver|D_retry|D_route|D_hints_lookup) | |
5943 | debug_printf("no retry data available\n"); | |
5944 | } | |
5945 | ||
5946 | /* Scan the current batch of new addresses, to handle pipes, files and | |
5947 | autoreplies, and determine which others are ready for routing. */ | |
5948 | ||
d6c82d7b | 5949 | while (addr_new) |
059ec3d9 PH |
5950 | { |
5951 | int rc; | |
5952 | uschar *p; | |
5953 | tree_node *tnode; | |
5954 | dbdata_retry *domain_retry_record; | |
5955 | dbdata_retry *address_retry_record; | |
5956 | ||
5957 | addr = addr_new; | |
5958 | addr_new = addr->next; | |
5959 | ||
5960 | DEBUG(D_deliver|D_retry|D_route) | |
5961 | { | |
5962 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); | |
5963 | debug_printf("Considering: %s\n", addr->address); | |
5964 | } | |
5965 | ||
5966 | /* Handle generated address that is a pipe or a file or an autoreply. */ | |
5967 | ||
5968 | if (testflag(addr, af_pfr)) | |
5969 | { | |
424a1c63 PH |
5970 | /* If an autoreply in a filter could not generate a syntactically valid |
5971 | address, give up forthwith. Set af_ignore_error so that we don't try to | |
5972 | generate a bounce. */ | |
5973 | ||
5974 | if (testflag(addr, af_bad_reply)) | |
5975 | { | |
5976 | addr->basic_errno = ERRNO_BADADDRESS2; | |
5977 | addr->local_part = addr->address; | |
5978 | addr->message = | |
5979 | US"filter autoreply generated syntactically invalid recipient"; | |
5980 | setflag(addr, af_ignore_error); | |
5981 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
5982 | continue; /* with the next new address */ | |
5983 | } | |
059ec3d9 PH |
5984 | |
5985 | /* If two different users specify delivery to the same pipe or file or | |
5986 | autoreply, there should be two different deliveries, so build a unique | |
5987 | string that incorporates the original address, and use this for | |
5988 | duplicate testing and recording delivery, and also for retrying. */ | |
5989 | ||
5990 | addr->unique = | |
424a1c63 PH |
5991 | string_sprintf("%s:%s", addr->address, addr->parent->unique + |
5992 | (testflag(addr->parent, af_homonym)? 3:0)); | |
059ec3d9 PH |
5993 | |
5994 | addr->address_retry_key = addr->domain_retry_key = | |
5995 | string_sprintf("T:%s", addr->unique); | |
5996 | ||
5997 | /* If a filter file specifies two deliveries to the same pipe or file, | |
5998 | we want to de-duplicate, but this is probably not wanted for two mail | |
5999 | commands to the same address, where probably both should be delivered. | |
6000 | So, we have to invent a different unique string in that case. Just | |
6001 | keep piling '>' characters on the front. */ | |
6002 | ||
6003 | if (addr->address[0] == '>') | |
6004 | { | |
d6c82d7b | 6005 | while (tree_search(tree_duplicates, addr->unique)) |
059ec3d9 PH |
6006 | addr->unique = string_sprintf(">%s", addr->unique); |
6007 | } | |
6008 | ||
d6c82d7b | 6009 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
059ec3d9 PH |
6010 | { |
6011 | DEBUG(D_deliver|D_route) | |
6012 | debug_printf("%s is a duplicate address: discarded\n", addr->address); | |
6013 | addr->dupof = tnode->data.ptr; | |
6014 | addr->next = addr_duplicate; | |
6015 | addr_duplicate = addr; | |
6016 | continue; | |
6017 | } | |
6018 | ||
6019 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6020 | ||
6021 | /* Check for previous delivery */ | |
6022 | ||
d6c82d7b | 6023 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6024 | { |
6025 | DEBUG(D_deliver|D_route) | |
6026 | debug_printf("%s was previously delivered: discarded\n", addr->address); | |
6027 | child_done(addr, tod_stamp(tod_log)); | |
6028 | continue; | |
6029 | } | |
6030 | ||
6031 | /* Save for checking future duplicates */ | |
6032 | ||
6033 | tree_add_duplicate(addr->unique, addr); | |
6034 | ||
6035 | /* Set local part and domain */ | |
6036 | ||
6037 | addr->local_part = addr->address; | |
6038 | addr->domain = addr->parent->domain; | |
6039 | ||
6040 | /* Ensure that the delivery is permitted. */ | |
6041 | ||
6042 | if (testflag(addr, af_file)) | |
6043 | { | |
6044 | if (!testflag(addr, af_allow_file)) | |
6045 | { | |
6046 | addr->basic_errno = ERRNO_FORBIDFILE; | |
6047 | addr->message = US"delivery to file forbidden"; | |
6048 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
6049 | continue; /* with the next new address */ | |
6050 | } | |
6051 | } | |
6052 | else if (addr->address[0] == '|') | |
6053 | { | |
6054 | if (!testflag(addr, af_allow_pipe)) | |
6055 | { | |
6056 | addr->basic_errno = ERRNO_FORBIDPIPE; | |
6057 | addr->message = US"delivery to pipe forbidden"; | |
6058 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
6059 | continue; /* with the next new address */ | |
6060 | } | |
6061 | } | |
6062 | else if (!testflag(addr, af_allow_reply)) | |
6063 | { | |
6064 | addr->basic_errno = ERRNO_FORBIDREPLY; | |
6065 | addr->message = US"autoreply forbidden"; | |
6066 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
6067 | continue; /* with the next new address */ | |
6068 | } | |
6069 | ||
6070 | /* If the errno field is already set to BADTRANSPORT, it indicates | |
6071 | failure to expand a transport string, or find the associated transport, | |
6072 | or an unset transport when one is required. Leave this test till now so | |
6073 | that the forbid errors are given in preference. */ | |
6074 | ||
6075 | if (addr->basic_errno == ERRNO_BADTRANSPORT) | |
6076 | { | |
6077 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6078 | continue; | |
6079 | } | |
6080 | ||
6081 | /* Treat /dev/null as a special case and abandon the delivery. This | |
6082 | avoids having to specify a uid on the transport just for this case. | |
6083 | Arrange for the transport name to be logged as "**bypassed**". */ | |
6084 | ||
6085 | if (Ustrcmp(addr->address, "/dev/null") == 0) | |
6086 | { | |
6087 | uschar *save = addr->transport->name; | |
6088 | addr->transport->name = US"**bypassed**"; | |
6089 | (void)post_process_one(addr, OK, LOG_MAIN, DTYPE_TRANSPORT, '='); | |
6090 | addr->transport->name = save; | |
6091 | continue; /* with the next new address */ | |
6092 | } | |
6093 | ||
6094 | /* Pipe, file, or autoreply delivery is to go ahead as a normal local | |
6095 | delivery. */ | |
6096 | ||
6097 | DEBUG(D_deliver|D_route) | |
6098 | debug_printf("queued for %s transport\n", addr->transport->name); | |
6099 | addr->next = addr_local; | |
6100 | addr_local = addr; | |
6101 | continue; /* with the next new address */ | |
6102 | } | |
6103 | ||
6104 | /* Handle normal addresses. First, split up into local part and domain, | |
6105 | handling the %-hack if necessary. There is the possibility of a defer from | |
6106 | a lookup in percent_hack_domains. */ | |
6107 | ||
6108 | if ((rc = deliver_split_address(addr)) == DEFER) | |
6109 | { | |
6110 | addr->message = US"cannot check percent_hack_domains"; | |
6111 | addr->basic_errno = ERRNO_LISTDEFER; | |
6112 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0); | |
6113 | continue; | |
6114 | } | |
6115 | ||
6116 | /* Check to see if the domain is held. If so, proceed only if the | |
6117 | delivery was forced by hand. */ | |
6118 | ||
6119 | deliver_domain = addr->domain; /* set $domain */ | |
d6c82d7b JH |
6120 | if ( !forced && hold_domains |
6121 | && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0, | |
059ec3d9 | 6122 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, |
d6c82d7b JH |
6123 | NULL)) != FAIL |
6124 | ) | |
059ec3d9 PH |
6125 | { |
6126 | if (rc == DEFER) | |
6127 | { | |
6128 | addr->message = US"hold_domains lookup deferred"; | |
6129 | addr->basic_errno = ERRNO_LISTDEFER; | |
6130 | } | |
6131 | else | |
6132 | { | |
6133 | addr->message = US"domain is held"; | |
6134 | addr->basic_errno = ERRNO_HELD; | |
6135 | } | |
6136 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0); | |
6137 | continue; | |
6138 | } | |
6139 | ||
6140 | /* Now we can check for duplicates and previously delivered addresses. In | |
6141 | order to do this, we have to generate a "unique" value for each address, | |
6142 | because there may be identical actual addresses in a line of descendents. | |
6143 | The "unique" field is initialized to the same value as the "address" field, | |
6144 | but gets changed here to cope with identically-named descendents. */ | |
6145 | ||
d6c82d7b | 6146 | for (parent = addr->parent; parent; parent = parent->parent) |
059ec3d9 PH |
6147 | if (strcmpic(addr->address, parent->address) == 0) break; |
6148 | ||
6149 | /* If there's an ancestor with the same name, set the homonym flag. This | |
6150 | influences how deliveries are recorded. Then add a prefix on the front of | |
6151 | the unique address. We use \n\ where n starts at 0 and increases each time. | |
6152 | It is unlikely to pass 9, but if it does, it may look odd but will still | |
6153 | work. This means that siblings or cousins with the same names are treated | |
6154 | as duplicates, which is what we want. */ | |
6155 | ||
d6c82d7b | 6156 | if (parent) |
059ec3d9 PH |
6157 | { |
6158 | setflag(addr, af_homonym); | |
6159 | if (parent->unique[0] != '\\') | |
6160 | addr->unique = string_sprintf("\\0\\%s", addr->address); | |
6161 | else | |
6162 | addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1, | |
6163 | addr->address); | |
6164 | } | |
6165 | ||
6166 | /* Ensure that the domain in the unique field is lower cased, because | |
6167 | domains are always handled caselessly. */ | |
6168 | ||
6169 | p = Ustrrchr(addr->unique, '@'); | |
6170 | while (*p != 0) { *p = tolower(*p); p++; } | |
6171 | ||
6172 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6173 | ||
d6c82d7b | 6174 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6175 | { |
6176 | DEBUG(D_deliver|D_route) | |
6177 | debug_printf("%s was previously delivered: discarded\n", addr->unique); | |
6178 | child_done(addr, tod_stamp(tod_log)); | |
6179 | continue; | |
6180 | } | |
6181 | ||
059ec3d9 | 6182 | /* Get the routing retry status, saving the two retry keys (with and |
48c7f9e2 PH |
6183 | without the local part) for subsequent use. If there is no retry record for |
6184 | the standard address routing retry key, we look for the same key with the | |
6185 | sender attached, because this form is used by the smtp transport after a | |
6186 | 4xx response to RCPT when address_retry_include_sender is true. */ | |
059ec3d9 PH |
6187 | |
6188 | addr->domain_retry_key = string_sprintf("R:%s", addr->domain); | |
6189 | addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part, | |
6190 | addr->domain); | |
6191 | ||
d6c82d7b | 6192 | if (dbm_file) |
059ec3d9 PH |
6193 | { |
6194 | domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key); | |
d6c82d7b JH |
6195 | if ( domain_retry_record |
6196 | && now - domain_retry_record->time_stamp > retry_data_expire | |
6197 | ) | |
48c7f9e2 | 6198 | domain_retry_record = NULL; /* Ignore if too old */ |
059ec3d9 PH |
6199 | |
6200 | address_retry_record = dbfn_read(dbm_file, addr->address_retry_key); | |
d6c82d7b JH |
6201 | if ( address_retry_record |
6202 | && now - address_retry_record->time_stamp > retry_data_expire | |
6203 | ) | |
48c7f9e2 PH |
6204 | address_retry_record = NULL; /* Ignore if too old */ |
6205 | ||
d6c82d7b | 6206 | if (!address_retry_record) |
48c7f9e2 | 6207 | { |
09945f1e | 6208 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
48c7f9e2 PH |
6209 | sender_address); |
6210 | address_retry_record = dbfn_read(dbm_file, altkey); | |
d6c82d7b JH |
6211 | if ( address_retry_record |
6212 | && now - address_retry_record->time_stamp > retry_data_expire) | |
48c7f9e2 PH |
6213 | address_retry_record = NULL; /* Ignore if too old */ |
6214 | } | |
059ec3d9 | 6215 | } |
d6c82d7b JH |
6216 | else |
6217 | domain_retry_record = address_retry_record = NULL; | |
059ec3d9 PH |
6218 | |
6219 | DEBUG(D_deliver|D_retry) | |
6220 | { | |
d6c82d7b | 6221 | if (!domain_retry_record) |
059ec3d9 | 6222 | debug_printf("no domain retry record\n"); |
d6c82d7b | 6223 | if (!address_retry_record) |
059ec3d9 PH |
6224 | debug_printf("no address retry record\n"); |
6225 | } | |
6226 | ||
6227 | /* If we are sending a message down an existing SMTP connection, we must | |
6228 | assume that the message which created the connection managed to route | |
6229 | an address to that connection. We do not want to run the risk of taking | |
6230 | a long time over routing here, because if we do, the server at the other | |
6231 | end of the connection may time it out. This is especially true for messages | |
6232 | with lots of addresses. For this kind of delivery, queue_running is not | |
6233 | set, so we would normally route all addresses. We take a pragmatic approach | |
6234 | and defer routing any addresses that have any kind of domain retry record. | |
6235 | That is, we don't even look at their retry times. It doesn't matter if this | |
6236 | doesn't work occasionally. This is all just an optimization, after all. | |
6237 | ||
6238 | The reason for not doing the same for address retries is that they normally | |
6239 | arise from 4xx responses, not DNS timeouts. */ | |
6240 | ||
d6c82d7b | 6241 | if (continue_hostname && domain_retry_record) |
059ec3d9 PH |
6242 | { |
6243 | addr->message = US"reusing SMTP connection skips previous routing defer"; | |
6244 | addr->basic_errno = ERRNO_RRETRY; | |
6245 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6246 | } | |
6247 | ||
f6c332bd PH |
6248 | /* If we are in a queue run, defer routing unless there is no retry data or |
6249 | we've passed the next retry time, or this message is forced. In other | |
6250 | words, ignore retry data when not in a queue run. | |
6251 | ||
6252 | However, if the domain retry time has expired, always allow the routing | |
6253 | attempt. If it fails again, the address will be failed. This ensures that | |
059ec3d9 PH |
6254 | each address is routed at least once, even after long-term routing |
6255 | failures. | |
6256 | ||
6257 | If there is an address retry, check that too; just wait for the next | |
6258 | retry time. This helps with the case when the temporary error on the | |
6259 | address was really message-specific rather than address specific, since | |
f6c332bd PH |
6260 | it allows other messages through. |
6261 | ||
6262 | We also wait for the next retry time if this is a message sent down an | |
6263 | existing SMTP connection (even though that will be forced). Otherwise there | |
6264 | will be far too many attempts for an address that gets a 4xx error. In | |
6265 | fact, after such an error, we should not get here because, the host should | |
6266 | not be remembered as one this message needs. However, there was a bug that | |
ba9af0af TF |
6267 | used to cause this to happen, so it is best to be on the safe side. |
6268 | ||
1ddeb334 TF |
6269 | Even if we haven't reached the retry time in the hints, there is one more |
6270 | check to do, which is for the ultimate address timeout. We only do this | |
6271 | check if there is an address retry record and there is not a domain retry | |
6272 | record; this implies that previous attempts to handle the address had the | |
6273 | retry_use_local_parts option turned on. We use this as an approximation | |
6274 | for the destination being like a local delivery, for example delivery over | |
6275 | LMTP to an IMAP message store. In this situation users are liable to bump | |
6276 | into their quota and thereby have intermittently successful deliveries, | |
6277 | which keep the retry record fresh, which can lead to us perpetually | |
6278 | deferring messages. */ | |
059ec3d9 | 6279 | |
d6c82d7b JH |
6280 | else if ( ( queue_running && !deliver_force |
6281 | || continue_hostname | |
6282 | ) | |
6283 | && ( ( domain_retry_record | |
6284 | && now < domain_retry_record->next_try | |
6285 | && !domain_retry_record->expired | |
6286 | ) | |
6287 | || ( address_retry_record | |
6288 | && now < address_retry_record->next_try | |
6289 | ) ) | |
6290 | && ( domain_retry_record | |
6291 | || !address_retry_record | |
6292 | || !retry_ultimate_address_timeout(addr->address_retry_key, | |
6293 | addr->domain, address_retry_record, now) | |
6294 | ) ) | |
059ec3d9 PH |
6295 | { |
6296 | addr->message = US"retry time not reached"; | |
6297 | addr->basic_errno = ERRNO_RRETRY; | |
6298 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6299 | } | |
6300 | ||
6301 | /* The domain is OK for routing. Remember if retry data exists so it | |
6302 | can be cleaned up after a successful delivery. */ | |
6303 | ||
6304 | else | |
6305 | { | |
d6c82d7b | 6306 | if (domain_retry_record || address_retry_record) |
059ec3d9 PH |
6307 | setflag(addr, af_dr_retry_exists); |
6308 | addr->next = addr_route; | |
6309 | addr_route = addr; | |
6310 | DEBUG(D_deliver|D_route) | |
6311 | debug_printf("%s: queued for routing\n", addr->address); | |
6312 | } | |
6313 | } | |
6314 | ||
6315 | /* The database is closed while routing is actually happening. Requests to | |
6316 | update it are put on a chain and all processed together at the end. */ | |
6317 | ||
d6c82d7b | 6318 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
6319 | |
6320 | /* If queue_domains is set, we don't even want to try routing addresses in | |
6321 | those domains. During queue runs, queue_domains is forced to be unset. | |
6322 | Optimize by skipping this pass through the addresses if nothing is set. */ | |
6323 | ||
d6c82d7b | 6324 | if (!deliver_force && queue_domains) |
059ec3d9 PH |
6325 | { |
6326 | address_item *okaddr = NULL; | |
d6c82d7b | 6327 | while (addr_route) |
059ec3d9 PH |
6328 | { |
6329 | address_item *addr = addr_route; | |
6330 | addr_route = addr->next; | |
6331 | ||
6332 | deliver_domain = addr->domain; /* set $domain */ | |
55414b25 | 6333 | if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0, |
059ec3d9 PH |
6334 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) |
6335 | != OK) | |
6336 | { | |
6337 | if (rc == DEFER) | |
6338 | { | |
6339 | addr->basic_errno = ERRNO_LISTDEFER; | |
6340 | addr->message = US"queue_domains lookup deferred"; | |
6341 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6342 | } | |
6343 | else | |
6344 | { | |
6345 | addr->next = okaddr; | |
6346 | okaddr = addr; | |
6347 | } | |
6348 | } | |
6349 | else | |
6350 | { | |
6351 | addr->basic_errno = ERRNO_QUEUE_DOMAIN; | |
6352 | addr->message = US"domain is in queue_domains"; | |
6353 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6354 | } | |
6355 | } | |
6356 | ||
6357 | addr_route = okaddr; | |
6358 | } | |
6359 | ||
6360 | /* Now route those addresses that are not deferred. */ | |
6361 | ||
d6c82d7b | 6362 | while (addr_route) |
059ec3d9 PH |
6363 | { |
6364 | int rc; | |
6365 | address_item *addr = addr_route; | |
55414b25 | 6366 | const uschar *old_domain = addr->domain; |
059ec3d9 PH |
6367 | uschar *old_unique = addr->unique; |
6368 | addr_route = addr->next; | |
6369 | addr->next = NULL; | |
6370 | ||
6371 | /* Just in case some router parameter refers to it. */ | |
6372 | ||
d6c82d7b JH |
6373 | if (!(return_path = addr->prop.errors_address)) |
6374 | return_path = sender_address; | |
059ec3d9 PH |
6375 | |
6376 | /* If a router defers an address, add a retry item. Whether or not to | |
6377 | use the local part in the key is a property of the router. */ | |
6378 | ||
6379 | if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new, | |
6380 | &addr_succeed, v_none)) == DEFER) | |
d6c82d7b JH |
6381 | retry_add_item(addr, |
6382 | addr->router->retry_use_local_part | |
6383 | ? string_sprintf("R:%s@%s", addr->local_part, addr->domain) | |
6384 | : string_sprintf("R:%s", addr->domain), | |
6385 | 0); | |
059ec3d9 PH |
6386 | |
6387 | /* Otherwise, if there is an existing retry record in the database, add | |
09945f1e PH |
6388 | retry items to delete both forms. We must also allow for the possibility |
6389 | of a routing retry that includes the sender address. Since the domain might | |
6390 | have been rewritten (expanded to fully qualified) as a result of routing, | |
6391 | ensure that the rewritten form is also deleted. */ | |
059ec3d9 PH |
6392 | |
6393 | else if (testflag(addr, af_dr_retry_exists)) | |
6394 | { | |
09945f1e PH |
6395 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
6396 | sender_address); | |
6397 | retry_add_item(addr, altkey, rf_delete); | |
059ec3d9 PH |
6398 | retry_add_item(addr, addr->address_retry_key, rf_delete); |
6399 | retry_add_item(addr, addr->domain_retry_key, rf_delete); | |
6400 | if (Ustrcmp(addr->domain, old_domain) != 0) | |
6401 | retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete); | |
6402 | } | |
6403 | ||
6404 | /* DISCARD is given for :blackhole: and "seen finish". The event has been | |
6405 | logged, but we need to ensure the address (and maybe parents) is marked | |
6406 | done. */ | |
6407 | ||
6408 | if (rc == DISCARD) | |
6409 | { | |
6410 | address_done(addr, tod_stamp(tod_log)); | |
6411 | continue; /* route next address */ | |
6412 | } | |
6413 | ||
6414 | /* The address is finished with (failed or deferred). */ | |
6415 | ||
6416 | if (rc != OK) | |
6417 | { | |
6418 | (void)post_process_one(addr, rc, LOG_MAIN, DTYPE_ROUTER, 0); | |
6419 | continue; /* route next address */ | |
6420 | } | |
6421 | ||
6422 | /* The address has been routed. If the router changed the domain, it will | |
6423 | also have changed the unique address. We have to test whether this address | |
6424 | has already been delivered, because it's the unique address that finally | |
6425 | gets recorded. */ | |
6426 | ||
d6c82d7b JH |
6427 | if ( addr->unique != old_unique |
6428 | && tree_search(tree_nonrecipients, addr->unique) != 0 | |
6429 | ) | |
059ec3d9 PH |
6430 | { |
6431 | DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: " | |
6432 | "discarded\n", addr->address); | |
6433 | if (addr_remote == addr) addr_remote = addr->next; | |
6434 | else if (addr_local == addr) addr_local = addr->next; | |
6435 | } | |
6436 | ||
6437 | /* If the router has same_domain_copy_routing set, we are permitted to copy | |
6438 | the routing for any other addresses with the same domain. This is an | |
6439 | optimisation to save repeated DNS lookups for "standard" remote domain | |
6440 | routing. The option is settable only on routers that generate host lists. | |
6441 | We play it very safe, and do the optimization only if the address is routed | |
6442 | to a remote transport, there are no header changes, and the domain was not | |
6443 | modified by the router. */ | |
6444 | ||
d6c82d7b JH |
6445 | if ( addr_remote == addr |
6446 | && addr->router->same_domain_copy_routing | |
6447 | && !addr->prop.extra_headers | |
6448 | && !addr->prop.remove_headers | |
6449 | && old_domain == addr->domain | |
6450 | ) | |
059ec3d9 PH |
6451 | { |
6452 | address_item **chain = &addr_route; | |
d6c82d7b | 6453 | while (*chain) |
059ec3d9 PH |
6454 | { |
6455 | address_item *addr2 = *chain; | |
6456 | if (Ustrcmp(addr2->domain, addr->domain) != 0) | |
6457 | { | |
6458 | chain = &(addr2->next); | |
6459 | continue; | |
6460 | } | |
6461 | ||
6462 | /* Found a suitable address; take it off the routing list and add it to | |
6463 | the remote delivery list. */ | |
6464 | ||
6465 | *chain = addr2->next; | |
6466 | addr2->next = addr_remote; | |
6467 | addr_remote = addr2; | |
6468 | ||
6469 | /* Copy the routing data */ | |
6470 | ||
6471 | addr2->domain = addr->domain; | |
6472 | addr2->router = addr->router; | |
6473 | addr2->transport = addr->transport; | |
6474 | addr2->host_list = addr->host_list; | |
6475 | addr2->fallback_hosts = addr->fallback_hosts; | |
d43cbe25 | 6476 | addr2->prop.errors_address = addr->prop.errors_address; |
059ec3d9 PH |
6477 | copyflag(addr2, addr, af_hide_child | af_local_host_removed); |
6478 | ||
6479 | DEBUG(D_deliver|D_route) | |
6480 | { | |
6481 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n" | |
6482 | "routing %s\n" | |
6483 | "Routing for %s copied from %s\n", | |
6484 | addr2->address, addr2->address, addr->address); | |
6485 | } | |
6486 | } | |
6487 | } | |
6488 | } /* Continue with routing the next address. */ | |
6489 | } /* Loop to process any child addresses that the routers created, and | |
6490 | any rerouted addresses that got put back on the new chain. */ | |
6491 | ||
6492 | ||
6493 | /* Debugging: show the results of the routing */ | |
6494 | ||
6495 | DEBUG(D_deliver|D_retry|D_route) | |
6496 | { | |
d6c82d7b | 6497 | address_item *p; |
059ec3d9 PH |
6498 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); |
6499 | debug_printf("After routing:\n Local deliveries:\n"); | |
d6c82d7b | 6500 | for (p = addr_local; p; p = p->next) |
059ec3d9 | 6501 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6502 | |
059ec3d9 | 6503 | debug_printf(" Remote deliveries:\n"); |
d6c82d7b | 6504 | for (p = addr_remote; p; p = p->next) |
059ec3d9 | 6505 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6506 | |
059ec3d9 | 6507 | debug_printf(" Failed addresses:\n"); |
d6c82d7b | 6508 | for (p = addr_failed; p; p = p->next) |
059ec3d9 | 6509 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6510 | |
059ec3d9 | 6511 | debug_printf(" Deferred addresses:\n"); |
d6c82d7b | 6512 | for (p = addr_defer; p; p = p->next) |
059ec3d9 | 6513 | debug_printf(" %s\n", p->address); |
059ec3d9 PH |
6514 | } |
6515 | ||
6516 | /* Free any resources that were cached during routing. */ | |
6517 | ||
6518 | search_tidyup(); | |
6519 | route_tidyup(); | |
6520 | ||
6521 | /* These two variables are set only during routing, after check_local_user. | |
6522 | Ensure they are not set in transports. */ | |
6523 | ||
6524 | local_user_gid = (gid_t)(-1); | |
6525 | local_user_uid = (uid_t)(-1); | |
6526 | ||
d7174846 PH |
6527 | /* Check for any duplicate addresses. This check is delayed until after |
6528 | routing, because the flexibility of the routing configuration means that | |
6529 | identical addresses with different parentage may end up being redirected to | |
6530 | different addresses. Checking for duplicates too early (as we previously used | |
6531 | to) makes this kind of thing not work. */ | |
6532 | ||
6533 | do_duplicate_check(&addr_local); | |
6534 | do_duplicate_check(&addr_remote); | |
6535 | ||
059ec3d9 PH |
6536 | /* When acting as an MUA wrapper, we proceed only if all addresses route to a |
6537 | remote transport. The check that they all end up in one transaction happens in | |
6538 | the do_remote_deliveries() function. */ | |
6539 | ||
d6c82d7b JH |
6540 | if ( mua_wrapper |
6541 | && (addr_local || addr_failed || addr_defer) | |
6542 | ) | |
059ec3d9 PH |
6543 | { |
6544 | address_item *addr; | |
6545 | uschar *which, *colon, *msg; | |
6546 | ||
d6c82d7b | 6547 | if (addr_local) |
059ec3d9 PH |
6548 | { |
6549 | addr = addr_local; | |
6550 | which = US"local"; | |
6551 | } | |
d6c82d7b | 6552 | else if (addr_defer) |
059ec3d9 PH |
6553 | { |
6554 | addr = addr_defer; | |
6555 | which = US"deferred"; | |
6556 | } | |
6557 | else | |
6558 | { | |
6559 | addr = addr_failed; | |
6560 | which = US"failed"; | |
6561 | } | |
6562 | ||
d6c82d7b | 6563 | while (addr->parent) addr = addr->parent; |
059ec3d9 | 6564 | |
d6c82d7b | 6565 | if (addr->message) |
059ec3d9 PH |
6566 | { |
6567 | colon = US": "; | |
6568 | msg = addr->message; | |
6569 | } | |
6570 | else colon = msg = US""; | |
6571 | ||
6572 | /* We don't need to log here for a forced failure as it will already | |
6573 | have been logged. Defer will also have been logged, but as a defer, so we do | |
6574 | need to do the failure logging. */ | |
6575 | ||
6576 | if (addr != addr_failed) | |
6577 | log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery", | |
6578 | addr->address, which); | |
6579 | ||
6580 | /* Always write an error to the caller */ | |
6581 | ||
6582 | fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address, | |
6583 | which, colon, msg); | |
6584 | ||
6585 | final_yield = DELIVER_MUA_FAILED; | |
6586 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
6587 | goto DELIVERY_TIDYUP; | |
6588 | } | |
6589 | ||
6590 | ||
6591 | /* If this is a run to continue deliveries to an external channel that is | |
6592 | already set up, defer any local deliveries. */ | |
6593 | ||
d6c82d7b | 6594 | if (continue_transport) |
059ec3d9 | 6595 | { |
d6c82d7b | 6596 | if (addr_defer) |
059ec3d9 PH |
6597 | { |
6598 | address_item *addr = addr_defer; | |
d6c82d7b | 6599 | while (addr->next) addr = addr->next; |
059ec3d9 PH |
6600 | addr->next = addr_local; |
6601 | } | |
d6c82d7b JH |
6602 | else |
6603 | addr_defer = addr_local; | |
059ec3d9 PH |
6604 | addr_local = NULL; |
6605 | } | |
6606 | ||
6607 | ||
6608 | /* Because address rewriting can happen in the routers, we should not really do | |
6609 | ANY deliveries until all addresses have been routed, so that all recipients of | |
6610 | the message get the same headers. However, this is in practice not always | |
6611 | possible, since sometimes remote addresses give DNS timeouts for days on end. | |
6612 | The pragmatic approach is to deliver what we can now, saving any rewritten | |
6613 | headers so that at least the next lot of recipients benefit from the rewriting | |
6614 | that has already been done. | |
6615 | ||
6616 | If any headers have been rewritten during routing, update the spool file to | |
6617 | remember them for all subsequent deliveries. This can be delayed till later if | |
6618 | there is only address to be delivered - if it succeeds the spool write need not | |
6619 | happen. */ | |
6620 | ||
d6c82d7b JH |
6621 | if ( header_rewritten |
6622 | && ( ( addr_local | |
6623 | && (addr_local->next || addr_remote) | |
6624 | ) | |
6625 | || (addr_remote && addr_remote->next) | |
6626 | ) ) | |
059ec3d9 PH |
6627 | { |
6628 | /* Panic-dies on error */ | |
6629 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
6630 | header_rewritten = FALSE; | |
6631 | } | |
6632 | ||
6633 | ||
6634 | /* If there are any deliveries to be done, open the journal file. This is used | |
6635 | to record successful deliveries as soon as possible after each delivery is | |
6636 | known to be complete. A file opened with O_APPEND is used so that several | |
6637 | processes can run simultaneously. | |
6638 | ||
6639 | The journal is just insurance against crashes. When the spool file is | |
6640 | ultimately updated at the end of processing, the journal is deleted. If a | |
6641 | journal is found to exist at the start of delivery, the addresses listed | |
6642 | therein are added to the non-recipients. */ | |
6643 | ||
d6c82d7b | 6644 | if (addr_local || addr_remote) |
059ec3d9 | 6645 | { |
a2da3176 JH |
6646 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-J", |
6647 | spool_directory, queue_name, message_subdir, id); | |
6648 | ||
6649 | if ((journal_fd = Uopen(spoolname, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE)) <0) | |
059ec3d9 PH |
6650 | { |
6651 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s", | |
6652 | spoolname, strerror(errno)); | |
6653 | return DELIVER_NOT_ATTEMPTED; | |
6654 | } | |
6655 | ||
6656 | /* Set the close-on-exec flag, make the file owned by Exim, and ensure | |
6657 | that the mode is correct - the group setting doesn't always seem to get | |
6658 | set automatically. */ | |
6659 | ||
1ac6b2e7 JH |
6660 | if( fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC) |
6661 | || fchown(journal_fd, exim_uid, exim_gid) | |
6662 | || fchmod(journal_fd, SPOOL_MODE) | |
6663 | ) | |
6664 | { | |
6665 | int ret = Uunlink(spoolname); | |
6666 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s", | |
6667 | spoolname, strerror(errno)); | |
6668 | if(ret && errno != ENOENT) | |
6669 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", | |
6670 | spoolname, strerror(errno)); | |
6671 | return DELIVER_NOT_ATTEMPTED; | |
6672 | } | |
059ec3d9 PH |
6673 | } |
6674 | ||
6675 | ||
1ac6b2e7 | 6676 | |
059ec3d9 PH |
6677 | /* Now we can get down to the business of actually doing deliveries. Local |
6678 | deliveries are done first, then remote ones. If ever the problems of how to | |
6679 | handle fallback transports are figured out, this section can be put into a loop | |
6680 | for handling fallbacks, though the uid switching will have to be revised. */ | |
6681 | ||
f1513293 PH |
6682 | /* Precompile a regex that is used to recognize a parameter in response |
6683 | to an LHLO command, if is isn't already compiled. This may be used on both | |
6684 | local and remote LMTP deliveries. */ | |
6685 | ||
d6c82d7b JH |
6686 | if (!regex_IGNOREQUOTA) |
6687 | regex_IGNOREQUOTA = | |
6688 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
f1513293 PH |
6689 | |
6690 | /* Handle local deliveries */ | |
6691 | ||
d6c82d7b | 6692 | if (addr_local) |
059ec3d9 PH |
6693 | { |
6694 | DEBUG(D_deliver|D_transport) | |
6695 | debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n"); | |
6696 | do_local_deliveries(); | |
6697 | disable_logging = FALSE; | |
6698 | } | |
6699 | ||
6700 | /* If queue_run_local is set, we do not want to attempt any remote deliveries, | |
6701 | so just queue them all. */ | |
6702 | ||
6703 | if (queue_run_local) | |
d6c82d7b | 6704 | while (addr_remote) |
059ec3d9 PH |
6705 | { |
6706 | address_item *addr = addr_remote; | |
6707 | addr_remote = addr->next; | |
6708 | addr->next = NULL; | |
6709 | addr->basic_errno = ERRNO_LOCAL_ONLY; | |
6710 | addr->message = US"remote deliveries suppressed"; | |
6711 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0); | |
6712 | } | |
059ec3d9 PH |
6713 | |
6714 | /* Handle remote deliveries */ | |
6715 | ||
d6c82d7b | 6716 | if (addr_remote) |
059ec3d9 PH |
6717 | { |
6718 | DEBUG(D_deliver|D_transport) | |
6719 | debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n"); | |
6720 | ||
6721 | /* Precompile some regex that are used to recognize parameters in response | |
6722 | to an EHLO command, if they aren't already compiled. */ | |
6723 | ||
476be7e2 | 6724 | deliver_init(); |
6c1c3d1d | 6725 | |
059ec3d9 PH |
6726 | /* Now sort the addresses if required, and do the deliveries. The yield of |
6727 | do_remote_deliveries is FALSE when mua_wrapper is set and all addresses | |
6728 | cannot be delivered in one transaction. */ | |
6729 | ||
d6c82d7b | 6730 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
6731 | if (!do_remote_deliveries(FALSE)) |
6732 | { | |
6733 | log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all " | |
6734 | "be delivered in one transaction"); | |
6735 | fprintf(stderr, "delivery to smarthost failed (configuration problem)\n"); | |
6736 | ||
6737 | final_yield = DELIVER_MUA_FAILED; | |
6738 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
6739 | goto DELIVERY_TIDYUP; | |
6740 | } | |
6741 | ||
6742 | /* See if any of the addresses that failed got put on the queue for delivery | |
6743 | to their fallback hosts. We do it this way because often the same fallback | |
6744 | host is used for many domains, so all can be sent in a single transaction | |
6745 | (if appropriately configured). */ | |
6746 | ||
d6c82d7b | 6747 | if (addr_fallback && !mua_wrapper) |
059ec3d9 PH |
6748 | { |
6749 | DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n"); | |
6750 | addr_remote = addr_fallback; | |
6751 | addr_fallback = NULL; | |
d6c82d7b | 6752 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
6753 | do_remote_deliveries(TRUE); |
6754 | } | |
6755 | disable_logging = FALSE; | |
6756 | } | |
6757 | ||
6758 | ||
6759 | /* All deliveries are now complete. Ignore SIGTERM during this tidying up | |
6760 | phase, to minimize cases of half-done things. */ | |
6761 | ||
6762 | DEBUG(D_deliver) | |
6763 | debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n"); | |
6764 | ||
6765 | /* Root privilege is no longer needed */ | |
6766 | ||
6767 | exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying"); | |
6768 | ||
6769 | set_process_info("tidying up after delivering %s", message_id); | |
6770 | signal(SIGTERM, SIG_IGN); | |
6771 | ||
6772 | /* When we are acting as an MUA wrapper, the smtp transport will either have | |
47c7a64a PH |
6773 | succeeded for all addresses, or failed them all in normal cases. However, there |
6774 | are some setup situations (e.g. when a named port does not exist) that cause an | |
6775 | immediate exit with deferral of all addresses. Convert those into failures. We | |
6776 | do not ever want to retry, nor do we want to send a bounce message. */ | |
059ec3d9 PH |
6777 | |
6778 | if (mua_wrapper) | |
6779 | { | |
d6c82d7b | 6780 | if (addr_defer) |
47c7a64a PH |
6781 | { |
6782 | address_item *addr, *nextaddr; | |
d6c82d7b | 6783 | for (addr = addr_defer; addr; addr = nextaddr) |
47c7a64a PH |
6784 | { |
6785 | log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred " | |
6786 | "delivery", addr->address); | |
6787 | nextaddr = addr->next; | |
6788 | addr->next = addr_failed; | |
6789 | addr_failed = addr; | |
6790 | } | |
6791 | addr_defer = NULL; | |
6792 | } | |
6793 | ||
6794 | /* Now all should either have succeeded or failed. */ | |
6795 | ||
d6c82d7b JH |
6796 | if (!addr_failed) |
6797 | final_yield = DELIVER_MUA_SUCCEEDED; | |
6798 | else | |
059ec3d9 | 6799 | { |
c562fd30 | 6800 | host_item * host; |
d6c82d7b JH |
6801 | uschar *s = addr_failed->user_message; |
6802 | ||
6803 | if (!s) s = addr_failed->message; | |
059ec3d9 PH |
6804 | |
6805 | fprintf(stderr, "Delivery failed: "); | |
6806 | if (addr_failed->basic_errno > 0) | |
6807 | { | |
6808 | fprintf(stderr, "%s", strerror(addr_failed->basic_errno)); | |
d6c82d7b | 6809 | if (s) fprintf(stderr, ": "); |
059ec3d9 | 6810 | } |
c562fd30 JH |
6811 | if ((host = addr_failed->host_used)) |
6812 | fprintf(stderr, "H=%s [%s]: ", host->name, host->address); | |
d6c82d7b JH |
6813 | if (s) |
6814 | fprintf(stderr, "%s", CS s); | |
6815 | else if (addr_failed->basic_errno <= 0) | |
6816 | fprintf(stderr, "unknown error"); | |
059ec3d9 PH |
6817 | fprintf(stderr, "\n"); |
6818 | ||
6819 | final_yield = DELIVER_MUA_FAILED; | |
6820 | addr_failed = NULL; | |
6821 | } | |
6822 | } | |
6823 | ||
6824 | /* In a normal configuration, we now update the retry database. This is done in | |
6825 | one fell swoop at the end in order not to keep opening and closing (and | |
6826 | locking) the database. The code for handling retries is hived off into a | |
6827 | separate module for convenience. We pass it the addresses of the various | |
6828 | chains, because deferred addresses can get moved onto the failed chain if the | |
6829 | retry cutoff time has expired for all alternative destinations. Bypass the | |
6830 | updating of the database if the -N flag is set, which is a debugging thing that | |
6831 | prevents actual delivery. */ | |
6832 | ||
d6c82d7b JH |
6833 | else if (!dont_deliver) |
6834 | retry_update(&addr_defer, &addr_failed, &addr_succeed); | |
059ec3d9 | 6835 | |
f40d5be3 | 6836 | /* Send DSN for successful messages if requested */ |
6c1c3d1d WB |
6837 | addr_senddsn = NULL; |
6838 | ||
f40d5be3 | 6839 | for (addr_dsntmp = addr_succeed; addr_dsntmp; addr_dsntmp = addr_dsntmp->next) |
6c1c3d1d | 6840 | { |
6c1c3d1d | 6841 | /* af_ignore_error not honored here. it's not an error */ |
f40d5be3 | 6842 | DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n" |
9671784a JH |
6843 | "DSN: processing successful delivery address: %s\n" |
6844 | "DSN: Sender_address: %s\n" | |
6845 | "DSN: orcpt: %s flags: %d\n" | |
6846 | "DSN: envid: %s ret: %d\n" | |
6847 | "DSN: Final recipient: %s\n" | |
6848 | "DSN: Remote SMTP server supports DSN: %d\n", | |
6849 | addr_dsntmp->router->name, | |
6850 | addr_dsntmp->address, | |
6851 | sender_address, | |
6852 | addr_dsntmp->dsn_orcpt, addr_dsntmp->dsn_flags, | |
6853 | dsn_envid, dsn_ret, | |
6854 | addr_dsntmp->address, | |
6855 | addr_dsntmp->dsn_aware | |
6856 | ); | |
6c1c3d1d WB |
6857 | |
6858 | /* send report if next hop not DSN aware or a router flagged "last DSN hop" | |
6859 | and a report was requested */ | |
9671784a JH |
6860 | if ( ( addr_dsntmp->dsn_aware != dsn_support_yes |
6861 | || addr_dsntmp->dsn_flags & rf_dsnlasthop | |
6862 | ) | |
6863 | && addr_dsntmp->dsn_flags & rf_dsnflags | |
6864 | && addr_dsntmp->dsn_flags & rf_notify_success | |
6865 | ) | |
6c1c3d1d WB |
6866 | { |
6867 | /* copy and relink address_item and send report with all of them at once later */ | |
6868 | address_item *addr_next; | |
6869 | addr_next = addr_senddsn; | |
6870 | addr_senddsn = store_get(sizeof(address_item)); | |
6871 | memcpy(addr_senddsn, addr_dsntmp, sizeof(address_item)); | |
6872 | addr_senddsn->next = addr_next; | |
6873 | } | |
6874 | else | |
94431adb | 6875 | DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n"); |
6c1c3d1d WB |
6876 | } |
6877 | ||
9671784a | 6878 | if (addr_senddsn) |
6c1c3d1d WB |
6879 | { |
6880 | pid_t pid; | |
6881 | int fd; | |
6882 | ||
94431adb | 6883 | /* create exim process to send message */ |
6c1c3d1d WB |
6884 | pid = child_open_exim(&fd); |
6885 | ||
6886 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid); | |
94431adb | 6887 | |
6c1c3d1d WB |
6888 | if (pid < 0) /* Creation of child failed */ |
6889 | { | |
6890 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " | |
6891 | "create child process to send failure message: %s", getpid(), | |
6892 | getppid(), strerror(errno)); | |
6893 | ||
1c5b1499 | 6894 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n"); |
94431adb | 6895 | } |
6c1c3d1d WB |
6896 | else /* Creation of child succeeded */ |
6897 | { | |
6898 | FILE *f = fdopen(fd, "wb"); | |
6899 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
6900 | int topt = topt_add_return_path | topt_no_body; | |
45500060 | 6901 | uschar * bound; |
94431adb | 6902 | |
1c5b1499 JH |
6903 | DEBUG(D_deliver) |
6904 | debug_printf("sending error message to: %s\n", sender_address); | |
94431adb | 6905 | |
6c1c3d1d | 6906 | /* build unique id for MIME boundary */ |
45500060 JH |
6907 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
6908 | DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound); | |
94431adb | 6909 | |
c007c974 JH |
6910 | if (errors_reply_to) |
6911 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
94431adb | 6912 | |
c007c974 JH |
6913 | fprintf(f, "Auto-Submitted: auto-generated\n" |
6914 | "From: Mail Delivery System <Mailer-Daemon@%s>\n" | |
6915 | "To: %s\n" | |
6916 | "Subject: Delivery Status Notification\n" | |
6917 | "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n" | |
6918 | "MIME-Version: 1.0\n\n" | |
6919 | ||
6920 | "--%s\n" | |
6921 | "Content-type: text/plain; charset=us-ascii\n\n" | |
94431adb | 6922 | |
c007c974 | 6923 | "This message was created automatically by mail delivery software.\n" |
8864c2c4 | 6924 | " ----- The following addresses had successful delivery notifications -----\n", |
45500060 | 6925 | qualify_domain_sender, sender_address, bound, bound); |
6c1c3d1d | 6926 | |
1c5b1499 JH |
6927 | for (addr_dsntmp = addr_senddsn; addr_dsntmp; |
6928 | addr_dsntmp = addr_dsntmp->next) | |
c007c974 JH |
6929 | fprintf(f, "<%s> (relayed %s)\n\n", |
6930 | addr_dsntmp->address, | |
6931 | (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 | |
6932 | ? "via non DSN router" | |
6933 | : addr_dsntmp->dsn_aware == dsn_support_no | |
6934 | ? "to non-DSN-aware mailer" | |
6935 | : "via non \"Remote SMTP\" router" | |
6936 | ); | |
1c5b1499 | 6937 | |
c007c974 JH |
6938 | fprintf(f, "--%s\n" |
6939 | "Content-type: message/delivery-status\n\n" | |
6940 | "Reporting-MTA: dns; %s\n", | |
45500060 | 6941 | bound, smtp_active_hostname); |
c007c974 | 6942 | |
1c5b1499 JH |
6943 | if (dsn_envid) |
6944 | { /* must be decoded from xtext: see RFC 3461:6.3a */ | |
6c1c3d1d WB |
6945 | uschar *xdec_envid; |
6946 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
c007c974 | 6947 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 6948 | else |
968178ac | 6949 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 6950 | } |
c007c974 | 6951 | fputc('\n', f); |
6c1c3d1d | 6952 | |
c007c974 JH |
6953 | for (addr_dsntmp = addr_senddsn; |
6954 | addr_dsntmp; | |
6955 | addr_dsntmp = addr_dsntmp->next) | |
6c1c3d1d | 6956 | { |
c007c974 | 6957 | if (addr_dsntmp->dsn_orcpt) |
6c1c3d1d | 6958 | fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt); |
c007c974 JH |
6959 | |
6960 | fprintf(f, "Action: delivered\n" | |
6961 | "Final-Recipient: rfc822;%s\n" | |
6962 | "Status: 2.0.0\n", | |
6963 | addr_dsntmp->address); | |
6964 | ||
6965 | if (addr_dsntmp->host_used && addr_dsntmp->host_used->name) | |
1c5b1499 | 6966 | fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n", |
c007c974 | 6967 | addr_dsntmp->host_used->name); |
6c1c3d1d | 6968 | else |
1c5b1499 | 6969 | fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n", |
c007c974 | 6970 | (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 ? "DSN" : "SMTP"); |
6c1c3d1d WB |
6971 | } |
6972 | ||
45500060 | 6973 | fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound); |
94431adb | 6974 | |
6c1c3d1d WB |
6975 | fflush(f); |
6976 | transport_filter_argv = NULL; /* Just in case */ | |
6977 | return_path = sender_address; /* In case not previously set */ | |
94431adb | 6978 | |
6c1c3d1d WB |
6979 | /* Write the original email out */ |
6980 | transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0); | |
6981 | fflush(f); | |
6982 | ||
21bc4865 | 6983 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
6984 | |
6985 | fflush(f); | |
6986 | fclose(f); | |
6987 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ | |
6988 | } | |
6989 | } | |
6c1c3d1d | 6990 | |
059ec3d9 PH |
6991 | /* If any addresses failed, we must send a message to somebody, unless |
6992 | af_ignore_error is set, in which case no action is taken. It is possible for | |
6993 | several messages to get sent if there are addresses with different | |
6994 | requirements. */ | |
6995 | ||
d6c82d7b | 6996 | while (addr_failed) |
059ec3d9 PH |
6997 | { |
6998 | pid_t pid; | |
6999 | int fd; | |
7000 | uschar *logtod = tod_stamp(tod_log); | |
7001 | address_item *addr; | |
7002 | address_item *handled_addr = NULL; | |
7003 | address_item **paddr; | |
7004 | address_item *msgchain = NULL; | |
7005 | address_item **pmsgchain = &msgchain; | |
7006 | ||
7007 | /* There are weird cases when logging is disabled in the transport. However, | |
7008 | there may not be a transport (address failed by a router). */ | |
7009 | ||
7010 | disable_logging = FALSE; | |
d6c82d7b | 7011 | if (addr_failed->transport) |
059ec3d9 PH |
7012 | disable_logging = addr_failed->transport->disable_logging; |
7013 | ||
7014 | DEBUG(D_deliver) | |
7015 | debug_printf("processing failed address %s\n", addr_failed->address); | |
7016 | ||
7017 | /* There are only two ways an address in a bounce message can get here: | |
7018 | ||
7019 | (1) When delivery was initially deferred, but has now timed out (in the call | |
7020 | to retry_update() above). We can detect this by testing for | |
7021 | af_retry_timedout. If the address does not have its own errors address, | |
7022 | we arrange to ignore the error. | |
7023 | ||
7024 | (2) If delivery failures for bounce messages are being ignored. We can detect | |
7025 | this by testing for af_ignore_error. This will also be set if a bounce | |
7026 | message has been autothawed and the ignore_bounce_errors_after time has | |
7027 | passed. It might also be set if a router was explicitly configured to | |
7028 | ignore errors (errors_to = ""). | |
7029 | ||
7030 | If neither of these cases obtains, something has gone wrong. Log the | |
7031 | incident, but then ignore the error. */ | |
7032 | ||
d6c82d7b | 7033 | if (sender_address[0] == 0 && !addr_failed->prop.errors_address) |
059ec3d9 | 7034 | { |
9671784a JH |
7035 | if ( !testflag(addr_failed, af_retry_timedout) |
7036 | && !testflag(addr_failed, af_ignore_error)) | |
059ec3d9 PH |
7037 | { |
7038 | log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message " | |
7039 | "failure is neither frozen nor ignored (it's been ignored)"); | |
7040 | } | |
7041 | setflag(addr_failed, af_ignore_error); | |
7042 | } | |
7043 | ||
7044 | /* If the first address on the list has af_ignore_error set, just remove | |
7045 | it from the list, throw away any saved message file, log it, and | |
7046 | mark the recipient done. */ | |
7047 | ||
50dc7409 | 7048 | if ( testflag(addr_failed, af_ignore_error) |
9671784a | 7049 | || ( addr_failed->dsn_flags & rf_dsnflags |
d6c82d7b JH |
7050 | && (addr_failed->dsn_flags & rf_notify_failure) != rf_notify_failure |
7051 | ) ) | |
1c5b1499 | 7052 | { |
059ec3d9 PH |
7053 | addr = addr_failed; |
7054 | addr_failed = addr->next; | |
d6c82d7b | 7055 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 PH |
7056 | |
7057 | log_write(0, LOG_MAIN, "%s%s%s%s: error ignored", | |
7058 | addr->address, | |
1c5b1499 JH |
7059 | !addr->parent ? US"" : US" <", |
7060 | !addr->parent ? US"" : addr->parent->address, | |
7061 | !addr->parent ? US"" : US">"); | |
059ec3d9 PH |
7062 | |
7063 | address_done(addr, logtod); | |
7064 | child_done(addr, logtod); | |
7065 | /* Panic-dies on error */ | |
7066 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7067 | } | |
7068 | ||
7069 | /* Otherwise, handle the sending of a message. Find the error address for | |
7070 | the first address, then send a message that includes all failed addresses | |
7071 | that have the same error address. Note the bounce_recipient is a global so | |
7072 | that it can be accesssed by $bounce_recipient while creating a customized | |
7073 | error message. */ | |
7074 | ||
7075 | else | |
7076 | { | |
d6c82d7b JH |
7077 | if (!(bounce_recipient = addr_failed->prop.errors_address)) |
7078 | bounce_recipient = sender_address; | |
059ec3d9 PH |
7079 | |
7080 | /* Make a subprocess to send a message */ | |
7081 | ||
1c5b1499 | 7082 | if ((pid = child_open_exim(&fd)) < 0) |
059ec3d9 PH |
7083 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " |
7084 | "create child process to send failure message: %s", getpid(), | |
7085 | getppid(), strerror(errno)); | |
7086 | ||
7087 | /* Creation of child succeeded */ | |
7088 | ||
7089 | else | |
7090 | { | |
7091 | int ch, rc; | |
7092 | int filecount = 0; | |
7093 | int rcount = 0; | |
7094 | uschar *bcc, *emf_text; | |
7095 | FILE *f = fdopen(fd, "wb"); | |
7096 | FILE *emf = NULL; | |
7097 | BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0; | |
7098 | int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) * | |
7099 | DELIVER_IN_BUFFER_SIZE; | |
45500060 | 7100 | uschar * bound; |
0f9d3aea JH |
7101 | uschar *dsnlimitmsg; |
7102 | uschar *dsnnotifyhdr; | |
7103 | int topt; | |
059ec3d9 PH |
7104 | |
7105 | DEBUG(D_deliver) | |
7106 | debug_printf("sending error message to: %s\n", bounce_recipient); | |
7107 | ||
7108 | /* Scan the addresses for all that have the same errors address, removing | |
7109 | them from the addr_failed chain, and putting them on msgchain. */ | |
7110 | ||
7111 | paddr = &addr_failed; | |
d6c82d7b | 7112 | for (addr = addr_failed; addr; addr = *paddr) |
d43cbe25 JH |
7113 | if (Ustrcmp(bounce_recipient, addr->prop.errors_address |
7114 | ? addr->prop.errors_address : sender_address) == 0) | |
1c5b1499 | 7115 | { /* The same - dechain */ |
059ec3d9 PH |
7116 | *paddr = addr->next; |
7117 | *pmsgchain = addr; | |
7118 | addr->next = NULL; | |
7119 | pmsgchain = &(addr->next); | |
7120 | } | |
1c5b1499 JH |
7121 | else |
7122 | paddr = &addr->next; /* Not the same; skip */ | |
059ec3d9 PH |
7123 | |
7124 | /* Include X-Failed-Recipients: for automatic interpretation, but do | |
7125 | not let any one header line get too long. We do this by starting a | |
7126 | new header every 50 recipients. Omit any addresses for which the | |
7127 | "hide_child" flag is set. */ | |
7128 | ||
d6c82d7b | 7129 | for (addr = msgchain; addr; addr = addr->next) |
059ec3d9 PH |
7130 | { |
7131 | if (testflag(addr, af_hide_child)) continue; | |
7132 | if (rcount >= 50) | |
7133 | { | |
7134 | fprintf(f, "\n"); | |
7135 | rcount = 0; | |
7136 | } | |
7137 | fprintf(f, "%s%s", | |
d6c82d7b JH |
7138 | rcount++ == 0 |
7139 | ? "X-Failed-Recipients: " | |
7140 | : ",\n ", | |
7141 | testflag(addr, af_pfr) && addr->parent | |
7142 | ? string_printing(addr->parent->address) | |
7143 | : string_printing(addr->address)); | |
059ec3d9 PH |
7144 | } |
7145 | if (rcount > 0) fprintf(f, "\n"); | |
7146 | ||
7147 | /* Output the standard headers */ | |
7148 | ||
1c5b1499 | 7149 | if (errors_reply_to) |
059ec3d9 | 7150 | fprintf(f, "Reply-To: %s\n", errors_reply_to); |
456682f5 | 7151 | fprintf(f, "Auto-Submitted: auto-replied\n"); |
0e22dfd1 | 7152 | moan_write_from(f); |
059ec3d9 PH |
7153 | fprintf(f, "To: %s\n", bounce_recipient); |
7154 | ||
6c1c3d1d | 7155 | /* generate boundary string and output MIME-Headers */ |
45500060 | 7156 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 JH |
7157 | |
7158 | fprintf(f, "Content-Type: multipart/report;" | |
7159 | " report-type=delivery-status; boundary=%s\n" | |
7160 | "MIME-Version: 1.0\n", | |
45500060 | 7161 | bound); |
6c1c3d1d | 7162 | |
059ec3d9 PH |
7163 | /* Open a template file if one is provided. Log failure to open, but |
7164 | carry on - default texts will be used. */ | |
7165 | ||
c007c974 JH |
7166 | if (bounce_message_file) |
7167 | if (!(emf = Ufopen(bounce_message_file, "rb"))) | |
059ec3d9 PH |
7168 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error " |
7169 | "message texts: %s", bounce_message_file, strerror(errno)); | |
059ec3d9 PH |
7170 | |
7171 | /* Quietly copy to configured additional addresses if required. */ | |
7172 | ||
c007c974 JH |
7173 | if ((bcc = moan_check_errorcopy(bounce_recipient))) |
7174 | fprintf(f, "Bcc: %s\n", bcc); | |
059ec3d9 PH |
7175 | |
7176 | /* The texts for the message can be read from a template file; if there | |
7177 | isn't one, or if it is too short, built-in texts are used. The first | |
7178 | emf text is a Subject: and any other headers. */ | |
7179 | ||
c007c974 JH |
7180 | if ((emf_text = next_emf(emf, US"header"))) |
7181 | fprintf(f, "%s\n", emf_text); | |
7182 | else | |
059ec3d9 PH |
7183 | fprintf(f, "Subject: Mail delivery failed%s\n\n", |
7184 | to_sender? ": returning message to sender" : ""); | |
059ec3d9 | 7185 | |
6c1c3d1d | 7186 | /* output human readable part as text/plain section */ |
c007c974 JH |
7187 | fprintf(f, "--%s\n" |
7188 | "Content-type: text/plain; charset=us-ascii\n\n", | |
45500060 | 7189 | bound); |
6c1c3d1d | 7190 | |
c007c974 JH |
7191 | if ((emf_text = next_emf(emf, US"intro"))) |
7192 | fprintf(f, "%s", CS emf_text); | |
7193 | else | |
059ec3d9 PH |
7194 | { |
7195 | fprintf(f, | |
7196 | /* This message has been reworded several times. It seems to be confusing to | |
7197 | somebody, however it is worded. I have retreated to the original, simple | |
7198 | wording. */ | |
7199 | "This message was created automatically by mail delivery software.\n"); | |
c007c974 JH |
7200 | |
7201 | if (bounce_message_text) | |
7202 | fprintf(f, "%s", CS bounce_message_text); | |
059ec3d9 | 7203 | if (to_sender) |
059ec3d9 PH |
7204 | fprintf(f, |
7205 | "\nA message that you sent could not be delivered to one or more of its\n" | |
7206 | "recipients. This is a permanent error. The following address(es) failed:\n"); | |
059ec3d9 | 7207 | else |
059ec3d9 PH |
7208 | fprintf(f, |
7209 | "\nA message sent by\n\n <%s>\n\n" | |
7210 | "could not be delivered to one or more of its recipients. The following\n" | |
7211 | "address(es) failed:\n", sender_address); | |
059ec3d9 | 7212 | } |
c007c974 | 7213 | fputc('\n', f); |
059ec3d9 PH |
7214 | |
7215 | /* Process the addresses, leaving them on the msgchain if they have a | |
7216 | file name for a return message. (There has already been a check in | |
447d236c PH |
7217 | post_process_one() for the existence of data in the message file.) A TRUE |
7218 | return from print_address_information() means that the address is not | |
7219 | hidden. */ | |
059ec3d9 PH |
7220 | |
7221 | paddr = &msgchain; | |
d6c82d7b | 7222 | for (addr = msgchain; addr; addr = *paddr) |
059ec3d9 PH |
7223 | { |
7224 | if (print_address_information(addr, f, US" ", US"\n ", US"")) | |
447d236c | 7225 | print_address_error(addr, f, US""); |
059ec3d9 PH |
7226 | |
7227 | /* End the final line for the address */ | |
7228 | ||
7229 | fputc('\n', f); | |
7230 | ||
7231 | /* Leave on msgchain if there's a return file. */ | |
7232 | ||
7233 | if (addr->return_file >= 0) | |
7234 | { | |
7235 | paddr = &(addr->next); | |
7236 | filecount++; | |
7237 | } | |
7238 | ||
7239 | /* Else save so that we can tick off the recipient when the | |
7240 | message is sent. */ | |
7241 | ||
7242 | else | |
7243 | { | |
7244 | *paddr = addr->next; | |
7245 | addr->next = handled_addr; | |
7246 | handled_addr = addr; | |
7247 | } | |
7248 | } | |
7249 | ||
c007c974 | 7250 | fputc('\n', f); |
059ec3d9 PH |
7251 | |
7252 | /* Get the next text, whether we need it or not, so as to be | |
7253 | positioned for the one after. */ | |
7254 | ||
7255 | emf_text = next_emf(emf, US"generated text"); | |
7256 | ||
7257 | /* If there were any file messages passed by the local transports, | |
7258 | include them in the message. Then put the address on the handled chain. | |
7259 | In the case of a batch of addresses that were all sent to the same | |
7260 | transport, the return_file field in all of them will contain the same | |
7261 | fd, and the return_filename field in the *last* one will be set (to the | |
7262 | name of the file). */ | |
7263 | ||
c007c974 | 7264 | if (msgchain) |
059ec3d9 PH |
7265 | { |
7266 | address_item *nextaddr; | |
7267 | ||
c007c974 JH |
7268 | if (emf_text) |
7269 | fprintf(f, "%s", CS emf_text); | |
7270 | else | |
059ec3d9 PH |
7271 | fprintf(f, |
7272 | "The following text was generated during the delivery " | |
7273 | "attempt%s:\n", (filecount > 1)? "s" : ""); | |
7274 | ||
d6c82d7b | 7275 | for (addr = msgchain; addr; addr = nextaddr) |
059ec3d9 PH |
7276 | { |
7277 | FILE *fm; | |
7278 | address_item *topaddr = addr; | |
7279 | ||
7280 | /* List all the addresses that relate to this file */ | |
7281 | ||
c007c974 JH |
7282 | fputc('\n', f); |
7283 | while(addr) /* Insurance */ | |
059ec3d9 PH |
7284 | { |
7285 | print_address_information(addr, f, US"------ ", US"\n ", | |
7286 | US" ------\n"); | |
c007c974 | 7287 | if (addr->return_filename) break; |
059ec3d9 PH |
7288 | addr = addr->next; |
7289 | } | |
c007c974 | 7290 | fputc('\n', f); |
059ec3d9 PH |
7291 | |
7292 | /* Now copy the file */ | |
7293 | ||
d6c82d7b | 7294 | if (!(fm = Ufopen(addr->return_filename, "rb"))) |
059ec3d9 PH |
7295 | fprintf(f, " +++ Exim error... failed to open text file: %s\n", |
7296 | strerror(errno)); | |
7297 | else | |
7298 | { | |
7299 | while ((ch = fgetc(fm)) != EOF) fputc(ch, f); | |
f1e894f3 | 7300 | (void)fclose(fm); |
059ec3d9 PH |
7301 | } |
7302 | Uunlink(addr->return_filename); | |
7303 | ||
7304 | /* Can now add to handled chain, first fishing off the next | |
7305 | address on the msgchain. */ | |
7306 | ||
7307 | nextaddr = addr->next; | |
7308 | addr->next = handled_addr; | |
7309 | handled_addr = topaddr; | |
7310 | } | |
c007c974 | 7311 | fputc('\n', f); |
059ec3d9 PH |
7312 | } |
7313 | ||
6c1c3d1d | 7314 | /* output machine readable part */ |
8c5d388a | 7315 | #ifdef SUPPORT_I18N |
9671784a JH |
7316 | if (message_smtputf8) |
7317 | fprintf(f, "--%s\n" | |
7318 | "Content-type: message/global-delivery-status\n\n" | |
7319 | "Reporting-MTA: dns; %s\n", | |
7320 | bound, smtp_active_hostname); | |
7321 | else | |
7322 | #endif | |
7323 | fprintf(f, "--%s\n" | |
7324 | "Content-type: message/delivery-status\n\n" | |
7325 | "Reporting-MTA: dns; %s\n", | |
7326 | bound, smtp_active_hostname); | |
c007c974 JH |
7327 | |
7328 | if (dsn_envid) | |
7329 | { | |
6c1c3d1d WB |
7330 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
7331 | uschar *xdec_envid; | |
7332 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
c007c974 | 7333 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7334 | else |
968178ac | 7335 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7336 | } |
c007c974 | 7337 | fputc('\n', f); |
94431adb | 7338 | |
c007c974 | 7339 | for (addr = handled_addr; addr; addr = addr->next) |
6c1c3d1d | 7340 | { |
895fbaf2 | 7341 | host_item * hu; |
c007c974 | 7342 | fprintf(f, "Action: failed\n" |
8864c2c4 JH |
7343 | "Final-Recipient: rfc822;%s\n" |
7344 | "Status: 5.0.0\n", | |
7345 | addr->address); | |
895fbaf2 JH |
7346 | if ((hu = addr->host_used) && hu->name) |
7347 | { | |
7348 | const uschar * s; | |
23f3dc67 | 7349 | fprintf(f, "Remote-MTA: dns; %s\n", hu->name); |
895fbaf2 JH |
7350 | #ifdef EXPERIMENTAL_DSN_INFO |
7351 | if (hu->address) | |
7352 | { | |
7353 | uschar * p = hu->port == 25 | |
7354 | ? US"" : string_sprintf(":%d", hu->port); | |
7355 | fprintf(f, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p); | |
7356 | } | |
7357 | if ((s = addr->smtp_greeting) && *s) | |
7358 | fprintf(f, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s); | |
7359 | if ((s = addr->helo_response) && *s) | |
7360 | fprintf(f, "X-Remote-MTA-helo-response: X-str; %s\n", s); | |
7361 | if ((s = addr->message) && *s) | |
7362 | fprintf(f, "X-Exim-Diagnostic: X-str; %s\n", s); | |
7363 | #endif | |
7364 | print_dsn_diagnostic_code(addr, f); | |
7365 | } | |
1c5b1499 | 7366 | fputc('\n', f); |
6c1c3d1d | 7367 | } |
6c1c3d1d | 7368 | |
059ec3d9 PH |
7369 | /* Now copy the message, trying to give an intelligible comment if |
7370 | it is too long for it all to be copied. The limit isn't strictly | |
7371 | applied because of the buffering. There is, however, an option | |
7372 | to suppress copying altogether. */ | |
7373 | ||
7374 | emf_text = next_emf(emf, US"copy"); | |
7375 | ||
6c1c3d1d | 7376 | /* add message body |
94431adb | 7377 | we ignore the intro text from template and add |
6c1c3d1d | 7378 | the text for bounce_return_size_limit at the end. |
94431adb | 7379 | |
6c1c3d1d WB |
7380 | bounce_return_message is ignored |
7381 | in case RET= is defined we honor these values | |
7382 | otherwise bounce_return_body is honored. | |
94431adb | 7383 | |
6c1c3d1d WB |
7384 | bounce_return_size_limit is always honored. |
7385 | */ | |
94431adb | 7386 | |
1c5b1499 | 7387 | fprintf(f, "--%s\n", bound); |
6c1c3d1d | 7388 | |
0f9d3aea JH |
7389 | dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned"; |
7390 | dsnnotifyhdr = NULL; | |
7391 | topt = topt_add_return_path; | |
7392 | ||
6c1c3d1d WB |
7393 | /* RET=HDRS? top priority */ |
7394 | if (dsn_ret == dsn_ret_hdrs) | |
7395 | topt |= topt_no_body; | |
7396 | else | |
62b7cd08 JH |
7397 | { |
7398 | struct stat statbuf; | |
7399 | ||
6c1c3d1d WB |
7400 | /* no full body return at all? */ |
7401 | if (!bounce_return_body) | |
7402 | { | |
7403 | topt |= topt_no_body; | |
7404 | /* add header if we overrule RET=FULL */ | |
7405 | if (dsn_ret == dsn_ret_full) | |
7406 | dsnnotifyhdr = dsnlimitmsg; | |
7407 | } | |
62b7cd08 | 7408 | /* line length limited... return headers only if oversize */ |
6c1c3d1d | 7409 | /* size limited ... return headers only if limit reached */ |
62b7cd08 JH |
7410 | else if ( max_received_linelength > bounce_return_linesize_limit |
7411 | || ( bounce_return_size_limit > 0 | |
7412 | && fstat(deliver_datafile, &statbuf) == 0 | |
7413 | && statbuf.st_size > max | |
7414 | ) ) | |
7415 | { | |
7416 | topt |= topt_no_body; | |
7417 | dsnnotifyhdr = dsnlimitmsg; | |
6c1c3d1d | 7418 | } |
62b7cd08 | 7419 | } |
94431adb | 7420 | |
8c5d388a | 7421 | #ifdef SUPPORT_I18N |
9671784a JH |
7422 | if (message_smtputf8) |
7423 | fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n" | |
7424 | : "Content-type: message/global\n\n", | |
7425 | f); | |
7426 | else | |
7427 | #endif | |
7428 | fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n" | |
7429 | : "Content-type: message/rfc822\n\n", | |
7430 | f); | |
6c1c3d1d WB |
7431 | |
7432 | fflush(f); | |
7433 | transport_filter_argv = NULL; /* Just in case */ | |
7434 | return_path = sender_address; /* In case not previously set */ | |
7435 | transport_write_message(NULL, fileno(f), topt, | |
7436 | 0, dsnnotifyhdr, NULL, NULL, NULL, NULL, 0); | |
7437 | fflush(f); | |
94431adb | 7438 | |
6c1c3d1d | 7439 | /* we never add the final text. close the file */ |
c007c974 | 7440 | if (emf) |
6c1c3d1d | 7441 | (void)fclose(emf); |
94431adb | 7442 | |
45500060 | 7443 | fprintf(f, "\n--%s--\n", bound); |
059ec3d9 PH |
7444 | |
7445 | /* Close the file, which should send an EOF to the child process | |
7446 | that is receiving the message. Wait for it to finish. */ | |
7447 | ||
f1e894f3 | 7448 | (void)fclose(f); |
059ec3d9 PH |
7449 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ |
7450 | ||
7451 | /* In the test harness, let the child do it's thing first. */ | |
7452 | ||
7453 | if (running_in_test_harness) millisleep(500); | |
7454 | ||
7455 | /* If the process failed, there was some disaster in setting up the | |
7456 | error message. Unless the message is very old, ensure that addr_defer | |
7457 | is non-null, which will have the effect of leaving the message on the | |
7458 | spool. The failed addresses will get tried again next time. However, we | |
7459 | don't really want this to happen too often, so freeze the message unless | |
7460 | there are some genuine deferred addresses to try. To do this we have | |
7461 | to call spool_write_header() here, because with no genuine deferred | |
7462 | addresses the normal code below doesn't get run. */ | |
7463 | ||
7464 | if (rc != 0) | |
7465 | { | |
7466 | uschar *s = US""; | |
d6c82d7b | 7467 | if (now - received_time < retry_maximum_timeout && !addr_defer) |
059ec3d9 PH |
7468 | { |
7469 | addr_defer = (address_item *)(+1); | |
7470 | deliver_freeze = TRUE; | |
7471 | deliver_frozen_at = time(NULL); | |
7472 | /* Panic-dies on error */ | |
7473 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7474 | s = US" (frozen)"; | |
7475 | } | |
7476 | deliver_msglog("Process failed (%d) when writing error message " | |
7477 | "to %s%s", rc, bounce_recipient, s); | |
7478 | log_write(0, LOG_MAIN, "Process failed (%d) when writing error message " | |
7479 | "to %s%s", rc, bounce_recipient, s); | |
7480 | } | |
7481 | ||
7482 | /* The message succeeded. Ensure that the recipients that failed are | |
7483 | now marked finished with on the spool and their parents updated. */ | |
7484 | ||
7485 | else | |
7486 | { | |
d6c82d7b | 7487 | for (addr = handled_addr; addr; addr = addr->next) |
059ec3d9 PH |
7488 | { |
7489 | address_done(addr, logtod); | |
7490 | child_done(addr, logtod); | |
7491 | } | |
7492 | /* Panic-dies on error */ | |
7493 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7494 | } | |
7495 | } | |
7496 | } | |
7497 | } | |
7498 | ||
7499 | disable_logging = FALSE; /* In case left set */ | |
7500 | ||
7501 | /* Come here from the mua_wrapper case if routing goes wrong */ | |
7502 | ||
7503 | DELIVERY_TIDYUP: | |
7504 | ||
7505 | /* If there are now no deferred addresses, we are done. Preserve the | |
7506 | message log if so configured, and we are using them. Otherwise, sling it. | |
7507 | Then delete the message itself. */ | |
7508 | ||
d6c82d7b | 7509 | if (!addr_defer) |
059ec3d9 PH |
7510 | { |
7511 | if (message_logs) | |
7512 | { | |
a2da3176 JH |
7513 | snprintf(CS spoolname, sizeof(spoolname), "%s/msglog/%s/%s/%s", |
7514 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 PH |
7515 | if (preserve_message_logs) |
7516 | { | |
7517 | int rc; | |
a2da3176 JH |
7518 | sprintf(CS big_buffer, "%s/msglog.OLD/%s/%s", |
7519 | spool_directory, queue_name, id); | |
059ec3d9 PH |
7520 | if ((rc = Urename(spoolname, big_buffer)) < 0) |
7521 | { | |
7522 | (void)directory_make(spool_directory, US"msglog.OLD", | |
7523 | MSGLOG_DIRECTORY_MODE, TRUE); | |
7524 | rc = Urename(spoolname, big_buffer); | |
7525 | } | |
7526 | if (rc < 0) | |
7527 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the " | |
7528 | "msglog.OLD directory", spoolname); | |
7529 | } | |
7530 | else | |
059ec3d9 | 7531 | if (Uunlink(spoolname) < 0) |
0761d44e TF |
7532 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
7533 | spoolname, strerror(errno)); | |
059ec3d9 PH |
7534 | } |
7535 | ||
7536 | /* Remove the two message files. */ | |
8e669ac1 | 7537 | |
a2da3176 JH |
7538 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-D", |
7539 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 | 7540 | if (Uunlink(spoolname) < 0) |
0ca0cf52 TF |
7541 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
7542 | spoolname, strerror(errno)); | |
a2da3176 JH |
7543 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-H", |
7544 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 | 7545 | if (Uunlink(spoolname) < 0) |
0ca0cf52 TF |
7546 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
7547 | spoolname, strerror(errno)); | |
2ac0e484 PH |
7548 | |
7549 | /* Log the end of this message, with queue time if requested. */ | |
7550 | ||
6c6d6e48 | 7551 | if (LOGGING(queue_time_overall)) |
8e669ac1 | 7552 | log_write(0, LOG_MAIN, "Completed QT=%s", |
19050083 | 7553 | readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) ); |
2ac0e484 PH |
7554 | else |
7555 | log_write(0, LOG_MAIN, "Completed"); | |
0e8a9471 MH |
7556 | |
7557 | /* Unset deliver_freeze so that we won't try to move the spool files further down */ | |
7558 | deliver_freeze = FALSE; | |
14a465c3 | 7559 | |
0cbf2b82 | 7560 | #ifndef DISABLE_EVENT |
774ef2d7 | 7561 | (void) event_raise(event_action, US"msg:complete", NULL); |
14a465c3 | 7562 | #endif |
fa41615d | 7563 | } |
059ec3d9 PH |
7564 | |
7565 | /* If there are deferred addresses, we are keeping this message because it is | |
7566 | not yet completed. Lose any temporary files that were catching output from | |
7567 | pipes for any of the deferred addresses, handle one-time aliases, and see if | |
7568 | the message has been on the queue for so long that it is time to send a warning | |
7569 | message to the sender, unless it is a mailer-daemon. If all deferred addresses | |
7570 | have the same domain, we can set deliver_domain for the expansion of | |
7571 | delay_warning_ condition - if any of them are pipes, files, or autoreplies, use | |
7572 | the parent's domain. | |
7573 | ||
7574 | If all the deferred addresses have an error number that indicates "retry time | |
7575 | not reached", skip sending the warning message, because it won't contain the | |
7576 | reason for the delay. It will get sent at the next real delivery attempt. | |
7577 | However, if at least one address has tried, we'd better include all of them in | |
7578 | the message. | |
7579 | ||
7580 | If we can't make a process to send the message, don't worry. | |
7581 | ||
7582 | For mailing list expansions we want to send the warning message to the | |
7583 | mailing list manager. We can't do a perfect job here, as some addresses may | |
7584 | have different errors addresses, but if we take the errors address from | |
7585 | each deferred address it will probably be right in most cases. | |
7586 | ||
7587 | If addr_defer == +1, it means there was a problem sending an error message | |
7588 | for failed addresses, and there were no "real" deferred addresses. The value | |
7589 | was set just to keep the message on the spool, so there is nothing to do here. | |
7590 | */ | |
7591 | ||
7592 | else if (addr_defer != (address_item *)(+1)) | |
7593 | { | |
7594 | address_item *addr; | |
7595 | uschar *recipients = US""; | |
7596 | BOOL delivery_attempted = FALSE; | |
7597 | ||
d6c82d7b JH |
7598 | deliver_domain = testflag(addr_defer, af_pfr) |
7599 | ? addr_defer->parent->domain : addr_defer->domain; | |
059ec3d9 | 7600 | |
d6c82d7b | 7601 | for (addr = addr_defer; addr; addr = addr->next) |
059ec3d9 PH |
7602 | { |
7603 | address_item *otaddr; | |
7604 | ||
7605 | if (addr->basic_errno > ERRNO_RETRY_BASE) delivery_attempted = TRUE; | |
7606 | ||
d6c82d7b | 7607 | if (deliver_domain) |
059ec3d9 | 7608 | { |
55414b25 JH |
7609 | const uschar *d = testflag(addr, af_pfr) |
7610 | ? addr->parent->domain : addr->domain; | |
059ec3d9 PH |
7611 | |
7612 | /* The domain may be unset for an address that has never been routed | |
7613 | because the system filter froze the message. */ | |
7614 | ||
d6c82d7b JH |
7615 | if (!d || Ustrcmp(d, deliver_domain) != 0) |
7616 | deliver_domain = NULL; | |
059ec3d9 PH |
7617 | } |
7618 | ||
d6c82d7b | 7619 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 PH |
7620 | |
7621 | /* Handle the case of one-time aliases. If any address in the ancestry | |
7622 | of this one is flagged, ensure it is in the recipients list, suitably | |
7623 | flagged, and that its parent is marked delivered. */ | |
7624 | ||
d6c82d7b JH |
7625 | for (otaddr = addr; otaddr; otaddr = otaddr->parent) |
7626 | if (otaddr->onetime_parent) break; | |
059ec3d9 | 7627 | |
d6c82d7b | 7628 | if (otaddr) |
059ec3d9 PH |
7629 | { |
7630 | int i; | |
7631 | int t = recipients_count; | |
7632 | ||
7633 | for (i = 0; i < recipients_count; i++) | |
7634 | { | |
7635 | uschar *r = recipients_list[i].address; | |
7636 | if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i; | |
7637 | if (Ustrcmp(otaddr->address, r) == 0) break; | |
7638 | } | |
7639 | ||
7640 | /* Didn't find the address already in the list, and did find the | |
7641 | ultimate parent's address in the list. After adding the recipient, | |
7642 | update the errors address in the recipients list. */ | |
7643 | ||
7644 | if (i >= recipients_count && t < recipients_count) | |
7645 | { | |
7646 | DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n", | |
7647 | otaddr->address, otaddr->parent->address); | |
7648 | receive_add_recipient(otaddr->address, t); | |
d43cbe25 | 7649 | recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address; |
059ec3d9 PH |
7650 | tree_add_nonrecipient(otaddr->parent->address); |
7651 | update_spool = TRUE; | |
7652 | } | |
7653 | } | |
7654 | ||
7655 | /* Except for error messages, ensure that either the errors address for | |
7656 | this deferred address or, if there is none, the sender address, is on the | |
7657 | list of recipients for a warning message. */ | |
7658 | ||
7659 | if (sender_address[0] != 0) | |
d6c82d7b | 7660 | if (addr->prop.errors_address) |
059ec3d9 | 7661 | { |
d6c82d7b | 7662 | if (Ustrstr(recipients, addr->prop.errors_address) == NULL) |
059ec3d9 | 7663 | recipients = string_sprintf("%s%s%s", recipients, |
d6c82d7b | 7664 | (recipients[0] == 0)? "" : ",", addr->prop.errors_address); |
059ec3d9 PH |
7665 | } |
7666 | else | |
7667 | { | |
d6c82d7b | 7668 | if (Ustrstr(recipients, sender_address) == NULL) |
059ec3d9 | 7669 | recipients = string_sprintf("%s%s%s", recipients, |
d6c82d7b | 7670 | (recipients[0] == 0)? "" : ",", sender_address); |
059ec3d9 | 7671 | } |
059ec3d9 PH |
7672 | } |
7673 | ||
7674 | /* Send a warning message if the conditions are right. If the condition check | |
7675 | fails because of a lookup defer, there is nothing we can do. The warning | |
7676 | is not sent. Another attempt will be made at the next delivery attempt (if | |
7677 | it also defers). */ | |
7678 | ||
50dc7409 JH |
7679 | if ( !queue_2stage |
7680 | && delivery_attempted | |
7681 | && ( ((addr_defer->dsn_flags & rf_dsnflags) == 0) | |
7682 | || (addr_defer->dsn_flags & rf_notify_delay) == rf_notify_delay | |
7683 | ) | |
7684 | && delay_warning[1] > 0 | |
7685 | && sender_address[0] != 0 | |
d6c82d7b | 7686 | && ( !delay_warning_condition |
50dc7409 JH |
7687 | || expand_check_condition(delay_warning_condition, |
7688 | US"delay_warning", US"option") | |
7689 | ) | |
7690 | ) | |
059ec3d9 PH |
7691 | { |
7692 | int count; | |
7693 | int show_time; | |
7694 | int queue_time = time(NULL) - received_time; | |
7695 | ||
7696 | /* When running in the test harness, there's an option that allows us to | |
7697 | fudge this time so as to get repeatability of the tests. Take the first | |
7698 | time off the list. In queue runs, the list pointer gets updated in the | |
7699 | calling process. */ | |
7700 | ||
7701 | if (running_in_test_harness && fudged_queue_times[0] != 0) | |
7702 | { | |
7703 | int qt = readconf_readtime(fudged_queue_times, '/', FALSE); | |
7704 | if (qt >= 0) | |
7705 | { | |
7706 | DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n", | |
7707 | fudged_queue_times); | |
7708 | queue_time = qt; | |
7709 | } | |
7710 | } | |
7711 | ||
7712 | /* See how many warnings we should have sent by now */ | |
7713 | ||
7714 | for (count = 0; count < delay_warning[1]; count++) | |
7715 | if (queue_time < delay_warning[count+2]) break; | |
7716 | ||
7717 | show_time = delay_warning[count+1]; | |
7718 | ||
7719 | if (count >= delay_warning[1]) | |
7720 | { | |
7721 | int extra; | |
7722 | int last_gap = show_time; | |
7723 | if (count > 1) last_gap -= delay_warning[count]; | |
7724 | extra = (queue_time - delay_warning[count+1])/last_gap; | |
7725 | show_time += last_gap * extra; | |
7726 | count += extra; | |
7727 | } | |
7728 | ||
7729 | DEBUG(D_deliver) | |
7730 | { | |
7731 | debug_printf("time on queue = %s\n", readconf_printtime(queue_time)); | |
7732 | debug_printf("warning counts: required %d done %d\n", count, | |
7733 | warning_count); | |
7734 | } | |
7735 | ||
7736 | /* We have computed the number of warnings there should have been by now. | |
7737 | If there haven't been enough, send one, and up the count to what it should | |
7738 | have been. */ | |
7739 | ||
7740 | if (warning_count < count) | |
7741 | { | |
7742 | header_line *h; | |
7743 | int fd; | |
7744 | pid_t pid = child_open_exim(&fd); | |
7745 | ||
7746 | if (pid > 0) | |
7747 | { | |
7748 | uschar *wmf_text; | |
7749 | FILE *wmf = NULL; | |
7750 | FILE *f = fdopen(fd, "wb"); | |
45500060 | 7751 | uschar * bound; |
62b7cd08 | 7752 | int topt; |
059ec3d9 | 7753 | |
c007c974 | 7754 | if (warn_message_file) |
d6c82d7b | 7755 | if (!(wmf = Ufopen(warn_message_file, "rb"))) |
059ec3d9 PH |
7756 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning " |
7757 | "message texts: %s", warn_message_file, strerror(errno)); | |
059ec3d9 PH |
7758 | |
7759 | warnmsg_recipients = recipients; | |
d6c82d7b JH |
7760 | warnmsg_delay = queue_time < 120*60 |
7761 | ? string_sprintf("%d minutes", show_time/60) | |
7762 | : string_sprintf("%d hours", show_time/3600); | |
059ec3d9 | 7763 | |
c007c974 | 7764 | if (errors_reply_to) |
059ec3d9 | 7765 | fprintf(f, "Reply-To: %s\n", errors_reply_to); |
456682f5 | 7766 | fprintf(f, "Auto-Submitted: auto-replied\n"); |
0e22dfd1 | 7767 | moan_write_from(f); |
059ec3d9 PH |
7768 | fprintf(f, "To: %s\n", recipients); |
7769 | ||
6c1c3d1d | 7770 | /* generated boundary string and output MIME-Headers */ |
45500060 | 7771 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 JH |
7772 | |
7773 | fprintf(f, "Content-Type: multipart/report;" | |
7774 | " report-type=delivery-status; boundary=%s\n" | |
7775 | "MIME-Version: 1.0\n", | |
45500060 | 7776 | bound); |
6c1c3d1d | 7777 | |
c007c974 | 7778 | if ((wmf_text = next_emf(wmf, US"header"))) |
059ec3d9 PH |
7779 | fprintf(f, "%s\n", wmf_text); |
7780 | else | |
7781 | fprintf(f, "Subject: Warning: message %s delayed %s\n\n", | |
7782 | message_id, warnmsg_delay); | |
7783 | ||
6c1c3d1d | 7784 | /* output human readable part as text/plain section */ |
c007c974 JH |
7785 | fprintf(f, "--%s\n" |
7786 | "Content-type: text/plain; charset=us-ascii\n\n", | |
45500060 | 7787 | bound); |
6c1c3d1d | 7788 | |
c007c974 JH |
7789 | if ((wmf_text = next_emf(wmf, US"intro"))) |
7790 | fprintf(f, "%s", CS wmf_text); | |
7791 | else | |
059ec3d9 PH |
7792 | { |
7793 | fprintf(f, | |
7794 | "This message was created automatically by mail delivery software.\n"); | |
7795 | ||
7796 | if (Ustrcmp(recipients, sender_address) == 0) | |
7797 | fprintf(f, | |
7798 | "A message that you sent has not yet been delivered to one or more of its\n" | |
7799 | "recipients after more than "); | |
7800 | ||
c007c974 JH |
7801 | else |
7802 | fprintf(f, | |
059ec3d9 PH |
7803 | "A message sent by\n\n <%s>\n\n" |
7804 | "has not yet been delivered to one or more of its recipients after more than \n", | |
c007c974 | 7805 | sender_address); |
059ec3d9 | 7806 | |
c007c974 JH |
7807 | fprintf(f, "%s on the queue on %s.\n\n" |
7808 | "The message identifier is: %s\n", | |
7809 | warnmsg_delay, primary_hostname, message_id); | |
059ec3d9 | 7810 | |
d6c82d7b | 7811 | for (h = header_list; h; h = h->next) |
059ec3d9 PH |
7812 | if (strncmpic(h->text, US"Subject:", 8) == 0) |
7813 | fprintf(f, "The subject of the message is: %s", h->text + 9); | |
7814 | else if (strncmpic(h->text, US"Date:", 5) == 0) | |
7815 | fprintf(f, "The date of the message is: %s", h->text + 6); | |
c007c974 | 7816 | fputc('\n', f); |
059ec3d9 PH |
7817 | |
7818 | fprintf(f, "The address%s to which the message has not yet been " | |
7819 | "delivered %s:\n", | |
c007c974 JH |
7820 | !addr_defer->next ? "" : "es", |
7821 | !addr_defer->next ? "is": "are"); | |
059ec3d9 PH |
7822 | } |
7823 | ||
447d236c | 7824 | /* List the addresses, with error information if allowed */ |
059ec3d9 | 7825 | |
6c1c3d1d WB |
7826 | /* store addr_defer for machine readable part */ |
7827 | address_item *addr_dsndefer = addr_defer; | |
c007c974 JH |
7828 | fputc('\n', f); |
7829 | while (addr_defer) | |
059ec3d9 PH |
7830 | { |
7831 | address_item *addr = addr_defer; | |
7832 | addr_defer = addr->next; | |
447d236c PH |
7833 | if (print_address_information(addr, f, US" ", US"\n ", US"")) |
7834 | print_address_error(addr, f, US"Delay reason: "); | |
c007c974 | 7835 | fputc('\n', f); |
059ec3d9 | 7836 | } |
c007c974 | 7837 | fputc('\n', f); |
059ec3d9 PH |
7838 | |
7839 | /* Final text */ | |
7840 | ||
c007c974 | 7841 | if (wmf) |
059ec3d9 | 7842 | { |
c007c974 JH |
7843 | if ((wmf_text = next_emf(wmf, US"final"))) |
7844 | fprintf(f, "%s", CS wmf_text); | |
f1e894f3 | 7845 | (void)fclose(wmf); |
059ec3d9 PH |
7846 | } |
7847 | else | |
7848 | { | |
7849 | fprintf(f, | |
7850 | "No action is required on your part. Delivery attempts will continue for\n" | |
7851 | "some time, and this warning may be repeated at intervals if the message\n" | |
7852 | "remains undelivered. Eventually the mail delivery software will give up,\n" | |
7853 | "and when that happens, the message will be returned to you.\n"); | |
7854 | } | |
7855 | ||
6c1c3d1d | 7856 | /* output machine readable part */ |
c007c974 JH |
7857 | fprintf(f, "\n--%s\n" |
7858 | "Content-type: message/delivery-status\n\n" | |
7859 | "Reporting-MTA: dns; %s\n", | |
45500060 | 7860 | bound, |
c007c974 | 7861 | smtp_active_hostname); |
94431adb | 7862 | |
c007c974 JH |
7863 | |
7864 | if (dsn_envid) | |
7865 | { | |
6c1c3d1d WB |
7866 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
7867 | uschar *xdec_envid; | |
7868 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
7869 | fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid); | |
7870 | else | |
968178ac | 7871 | fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7872 | } |
c007c974 | 7873 | fputc('\n', f); |
6c1c3d1d | 7874 | |
1c5b1499 | 7875 | for ( ; addr_dsndefer; addr_dsndefer = addr_dsndefer->next) |
6c1c3d1d | 7876 | { |
c007c974 | 7877 | if (addr_dsndefer->dsn_orcpt) |
1c5b1499 | 7878 | fprintf(f, "Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt); |
c007c974 | 7879 | |
1c5b1499 JH |
7880 | fprintf(f, "Action: delayed\n" |
7881 | "Final-Recipient: rfc822;%s\n" | |
7882 | "Status: 4.0.0\n", | |
7883 | addr_dsndefer->address); | |
c007c974 | 7884 | if (addr_dsndefer->host_used && addr_dsndefer->host_used->name) |
21bc4865 | 7885 | { |
94431adb | 7886 | fprintf(f, "Remote-MTA: dns; %s\n", |
21bc4865 WB |
7887 | addr_dsndefer->host_used->name); |
7888 | print_dsn_diagnostic_code(addr_dsndefer, f); | |
7889 | } | |
1c5b1499 | 7890 | fputc('\n', f); |
6c1c3d1d WB |
7891 | } |
7892 | ||
1c5b1499 | 7893 | fprintf(f, "--%s\n" |
c007c974 | 7894 | "Content-type: text/rfc822-headers\n\n", |
45500060 | 7895 | bound); |
6c1c3d1d WB |
7896 | |
7897 | fflush(f); | |
7898 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
62b7cd08 | 7899 | topt = topt_add_return_path | topt_no_body; |
6c1c3d1d WB |
7900 | transport_filter_argv = NULL; /* Just in case */ |
7901 | return_path = sender_address; /* In case not previously set */ | |
7902 | /* Write the original email out */ | |
7903 | transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0); | |
7904 | fflush(f); | |
7905 | ||
45500060 | 7906 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
7907 | |
7908 | fflush(f); | |
6c1c3d1d | 7909 | |
059ec3d9 PH |
7910 | /* Close and wait for child process to complete, without a timeout. |
7911 | If there's an error, don't update the count. */ | |
7912 | ||
f1e894f3 | 7913 | (void)fclose(f); |
059ec3d9 PH |
7914 | if (child_close(pid, 0) == 0) |
7915 | { | |
7916 | warning_count = count; | |
7917 | update_spool = TRUE; /* Ensure spool rewritten */ | |
7918 | } | |
7919 | } | |
7920 | } | |
7921 | } | |
7922 | ||
7923 | /* Clear deliver_domain */ | |
7924 | ||
7925 | deliver_domain = NULL; | |
7926 | ||
7927 | /* If this was a first delivery attempt, unset the first time flag, and | |
7928 | ensure that the spool gets updated. */ | |
7929 | ||
7930 | if (deliver_firsttime) | |
7931 | { | |
7932 | deliver_firsttime = FALSE; | |
7933 | update_spool = TRUE; | |
7934 | } | |
7935 | ||
7936 | /* If delivery was frozen and freeze_tell is set, generate an appropriate | |
7937 | message, unless the message is a local error message (to avoid loops). Then | |
7938 | log the freezing. If the text in "frozen_info" came from a system filter, | |
7939 | it has been escaped into printing characters so as not to mess up log lines. | |
7940 | For the "tell" message, we turn \n back into newline. Also, insert a newline | |
7941 | near the start instead of the ": " string. */ | |
7942 | ||
7943 | if (deliver_freeze) | |
7944 | { | |
d6c82d7b | 7945 | if (freeze_tell && freeze_tell[0] != 0 && !local_error_message) |
059ec3d9 PH |
7946 | { |
7947 | uschar *s = string_copy(frozen_info); | |
7948 | uschar *ss = Ustrstr(s, " by the system filter: "); | |
7949 | ||
7950 | if (ss != NULL) | |
7951 | { | |
7952 | ss[21] = '.'; | |
7953 | ss[22] = '\n'; | |
7954 | } | |
7955 | ||
7956 | ss = s; | |
7957 | while (*ss != 0) | |
7958 | { | |
7959 | if (*ss == '\\' && ss[1] == 'n') | |
7960 | { | |
7961 | *ss++ = ' '; | |
7962 | *ss++ = '\n'; | |
7963 | } | |
7964 | else ss++; | |
7965 | } | |
7966 | moan_tell_someone(freeze_tell, addr_defer, US"Message frozen", | |
7967 | "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id, | |
7968 | s, sender_address); | |
7969 | } | |
7970 | ||
7971 | /* Log freezing just before we update the -H file, to minimize the chance | |
7972 | of a race problem. */ | |
7973 | ||
7974 | deliver_msglog("*** Frozen%s\n", frozen_info); | |
7975 | log_write(0, LOG_MAIN, "Frozen%s", frozen_info); | |
7976 | } | |
7977 | ||
7978 | /* If there have been any updates to the non-recipients list, or other things | |
7979 | that get written to the spool, we must now update the spool header file so | |
7980 | that it has the right information for the next delivery attempt. If there | |
7981 | was more than one address being delivered, the header_change update is done | |
7982 | earlier, in case one succeeds and then something crashes. */ | |
7983 | ||
7984 | DEBUG(D_deliver) | |
7985 | debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n", | |
7986 | update_spool, header_rewritten); | |
7987 | ||
7988 | if (update_spool || header_rewritten) | |
7989 | /* Panic-dies on error */ | |
7990 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7991 | } | |
7992 | ||
7993 | /* Finished with the message log. If the message is complete, it will have | |
7994 | been unlinked or renamed above. */ | |
7995 | ||
f1e894f3 | 7996 | if (message_logs) (void)fclose(message_log); |
059ec3d9 PH |
7997 | |
7998 | /* Now we can close and remove the journal file. Its only purpose is to record | |
7999 | successfully completed deliveries asap so that this information doesn't get | |
8000 | lost if Exim (or the machine) crashes. Forgetting about a failed delivery is | |
8001 | not serious, as trying it again is not harmful. The journal might not be open | |
8002 | if all addresses were deferred at routing or directing. Nevertheless, we must | |
8003 | remove it if it exists (may have been lying around from a crash during the | |
8004 | previous delivery attempt). We don't remove the journal if a delivery | |
8005 | subprocess failed to pass back delivery information; this is controlled by | |
8006 | the remove_journal flag. When the journal is left, we also don't move the | |
8007 | message off the main spool if frozen and the option is set. It should get moved | |
8008 | at the next attempt, after the journal has been inspected. */ | |
8009 | ||
f1e894f3 | 8010 | if (journal_fd >= 0) (void)close(journal_fd); |
059ec3d9 PH |
8011 | |
8012 | if (remove_journal) | |
8013 | { | |
a2da3176 JH |
8014 | snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-J", |
8015 | spool_directory, queue_name, message_subdir, id); | |
059ec3d9 PH |
8016 | if (Uunlink(spoolname) < 0 && errno != ENOENT) |
8017 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", spoolname, | |
8018 | strerror(errno)); | |
8019 | ||
8020 | /* Move the message off the spool if reqested */ | |
8021 | ||
a7538db1 | 8022 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
059ec3d9 PH |
8023 | if (deliver_freeze && move_frozen_messages) |
8024 | (void)spool_move_message(id, message_subdir, US"", US"F"); | |
a7538db1 | 8025 | #endif |
059ec3d9 PH |
8026 | } |
8027 | ||
8028 | /* Closing the data file frees the lock; if the file has been unlinked it | |
8029 | will go away. Otherwise the message becomes available for another process | |
8030 | to try delivery. */ | |
8031 | ||
f1e894f3 | 8032 | (void)close(deliver_datafile); |
059ec3d9 PH |
8033 | deliver_datafile = -1; |
8034 | DEBUG(D_deliver) debug_printf("end delivery of %s\n", id); | |
8035 | ||
8036 | /* It is unlikely that there will be any cached resources, since they are | |
8037 | released after routing, and in the delivery subprocesses. However, it's | |
8038 | possible for an expansion for something afterwards (for example, | |
8039 | expand_check_condition) to do a lookup. We must therefore be sure everything is | |
8040 | released. */ | |
8041 | ||
8042 | search_tidyup(); | |
faa05a93 | 8043 | acl_where = ACL_WHERE_UNKNOWN; |
059ec3d9 PH |
8044 | return final_yield; |
8045 | } | |
8046 | ||
476be7e2 JH |
8047 | |
8048 | ||
8049 | void | |
8050 | deliver_init(void) | |
8051 | { | |
8052 | if (!regex_PIPELINING) regex_PIPELINING = | |
8053 | regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE); | |
8054 | ||
8055 | if (!regex_SIZE) regex_SIZE = | |
8056 | regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE); | |
8057 | ||
8058 | if (!regex_AUTH) regex_AUTH = | |
8059 | regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)", | |
8060 | FALSE, TRUE); | |
8061 | ||
8062 | #ifdef SUPPORT_TLS | |
8063 | if (!regex_STARTTLS) regex_STARTTLS = | |
8064 | regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE); | |
8065 | #endif | |
8066 | ||
8067 | #ifndef DISABLE_PRDR | |
8068 | if (!regex_PRDR) regex_PRDR = | |
8069 | regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE); | |
8070 | #endif | |
8071 | ||
8c5d388a | 8072 | #ifdef SUPPORT_I18N |
7ade712c JH |
8073 | if (!regex_UTF8) regex_UTF8 = |
8074 | regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE); | |
8075 | #endif | |
8076 | ||
476be7e2 JH |
8077 | if (!regex_DSN) regex_DSN = |
8078 | regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE); | |
8079 | ||
8080 | if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA = | |
8081 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
8082 | } | |
8083 | ||
8084 | ||
a39bd74d JB |
8085 | uschar * |
8086 | deliver_get_sender_address (uschar * id) | |
8087 | { | |
dadff1d4 HSHR |
8088 | int rc; |
8089 | uschar * new_sender_address, | |
8090 | * save_sender_address; | |
789f8a4f | 8091 | BOOL save_qr = queue_running; |
dadff1d4 | 8092 | |
789f8a4f JH |
8093 | /* make spool_open_datafile non-noisy on fail */ |
8094 | ||
8095 | queue_running = TRUE; | |
8096 | ||
8097 | /* Side effect: message_subdir is set for the (possibly split) spool directory */ | |
8098 | ||
8099 | deliver_datafile = spool_open_datafile(id); | |
8100 | queue_running = save_qr; | |
8101 | if (deliver_datafile < 0) | |
a39bd74d JB |
8102 | return NULL; |
8103 | ||
dadff1d4 HSHR |
8104 | /* Save and restore the global sender_address. I'm not sure if we should |
8105 | not save/restore all the other global variables too, because | |
8106 | spool_read_header() may change all of them. But OTOH, when this | |
8107 | deliver_get_sender_address() gets called, the current message is done | |
8108 | already and nobody needs the globals anymore. (HS12, 2015-08-21) */ | |
8109 | ||
a39bd74d | 8110 | sprintf(CS spoolname, "%s-H", id); |
dadff1d4 HSHR |
8111 | save_sender_address = sender_address; |
8112 | ||
8113 | rc = spool_read_header(spoolname, TRUE, TRUE); | |
8114 | ||
8115 | new_sender_address = sender_address; | |
8116 | sender_address = save_sender_address; | |
8117 | ||
8118 | if (rc != spool_read_OK) | |
a39bd74d JB |
8119 | return NULL; |
8120 | ||
dadff1d4 HSHR |
8121 | assert(new_sender_address); |
8122 | ||
a39bd74d JB |
8123 | (void)close(deliver_datafile); |
8124 | deliver_datafile = -1; | |
8125 | ||
dadff1d4 | 8126 | return new_sender_address; |
a39bd74d JB |
8127 | } |
8128 | ||
67d81c10 JH |
8129 | /* vi: aw ai sw=2 |
8130 | */ | |
059ec3d9 | 8131 | /* End of deliver.c */ |