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 | ||
059ec3d9 PH |
79 | |
80 | ||
81 | /************************************************* | |
82 | * Make a new address item * | |
83 | *************************************************/ | |
84 | ||
85 | /* This function gets the store and initializes with default values. The | |
86 | transport_return value defaults to DEFER, so that any unexpected failure to | |
87 | deliver does not wipe out the message. The default unique string is set to a | |
88 | copy of the address, so that its domain can be lowercased. | |
89 | ||
90 | Argument: | |
91 | address the RFC822 address string | |
92 | copy force a copy of the address | |
93 | ||
94 | Returns: a pointer to an initialized address_item | |
95 | */ | |
96 | ||
97 | address_item * | |
98 | deliver_make_addr(uschar *address, BOOL copy) | |
99 | { | |
100 | address_item *addr = store_get(sizeof(address_item)); | |
101 | *addr = address_defaults; | |
102 | if (copy) address = string_copy(address); | |
103 | addr->address = address; | |
104 | addr->unique = string_copy(address); | |
105 | return addr; | |
106 | } | |
107 | ||
108 | ||
109 | ||
110 | ||
111 | /************************************************* | |
112 | * Set expansion values for an address * | |
113 | *************************************************/ | |
114 | ||
115 | /* Certain expansion variables are valid only when handling an address or | |
116 | address list. This function sets them up or clears the values, according to its | |
117 | argument. | |
118 | ||
119 | Arguments: | |
120 | addr the address in question, or NULL to clear values | |
121 | Returns: nothing | |
122 | */ | |
123 | ||
124 | void | |
125 | deliver_set_expansions(address_item *addr) | |
126 | { | |
d6c82d7b | 127 | if (!addr) |
059ec3d9 | 128 | { |
55414b25 | 129 | const uschar ***p = address_expansions; |
d6c82d7b | 130 | while (*p) **p++ = NULL; |
059ec3d9 PH |
131 | return; |
132 | } | |
133 | ||
134 | /* Exactly what gets set depends on whether there is one or more addresses, and | |
135 | what they contain. These first ones are always set, taking their values from | |
136 | the first address. */ | |
137 | ||
d6c82d7b | 138 | if (!addr->host_list) |
059ec3d9 PH |
139 | { |
140 | deliver_host = deliver_host_address = US""; | |
a7538db1 | 141 | deliver_host_port = 0; |
059ec3d9 PH |
142 | } |
143 | else | |
144 | { | |
145 | deliver_host = addr->host_list->name; | |
146 | deliver_host_address = addr->host_list->address; | |
a7538db1 | 147 | deliver_host_port = addr->host_list->port; |
059ec3d9 PH |
148 | } |
149 | ||
150 | deliver_recipients = addr; | |
d43cbe25 JH |
151 | deliver_address_data = addr->prop.address_data; |
152 | deliver_domain_data = addr->prop.domain_data; | |
153 | deliver_localpart_data = addr->prop.localpart_data; | |
059ec3d9 PH |
154 | |
155 | /* These may be unset for multiple addresses */ | |
156 | ||
157 | deliver_domain = addr->domain; | |
158 | self_hostname = addr->self_hostname; | |
159 | ||
8523533c TK |
160 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
161 | bmi_deliver = 1; /* deliver by default */ | |
162 | bmi_alt_location = NULL; | |
163 | bmi_base64_verdict = NULL; | |
164 | bmi_base64_tracker_verdict = NULL; | |
165 | #endif | |
166 | ||
059ec3d9 PH |
167 | /* If there's only one address we can set everything. */ |
168 | ||
d6c82d7b | 169 | if (!addr->next) |
059ec3d9 PH |
170 | { |
171 | address_item *addr_orig; | |
172 | ||
173 | deliver_localpart = addr->local_part; | |
174 | deliver_localpart_prefix = addr->prefix; | |
175 | deliver_localpart_suffix = addr->suffix; | |
176 | ||
d6c82d7b | 177 | for (addr_orig = addr; addr_orig->parent; addr_orig = addr_orig->parent) ; |
059ec3d9 PH |
178 | deliver_domain_orig = addr_orig->domain; |
179 | ||
180 | /* Re-instate any prefix and suffix in the original local part. In all | |
181 | normal cases, the address will have a router associated with it, and we can | |
182 | choose the caseful or caseless version accordingly. However, when a system | |
183 | filter sets up a pipe, file, or autoreply delivery, no router is involved. | |
184 | In this case, though, there won't be any prefix or suffix to worry about. */ | |
185 | ||
d6c82d7b JH |
186 | deliver_localpart_orig = !addr_orig->router |
187 | ? addr_orig->local_part | |
188 | : addr_orig->router->caseful_local_part | |
189 | ? addr_orig->cc_local_part | |
190 | : addr_orig->lc_local_part; | |
059ec3d9 PH |
191 | |
192 | /* If there's a parent, make its domain and local part available, and if | |
193 | delivering to a pipe or file, or sending an autoreply, get the local | |
194 | part from the parent. For pipes and files, put the pipe or file string | |
195 | into address_pipe and address_file. */ | |
196 | ||
d6c82d7b | 197 | if (addr->parent) |
059ec3d9 PH |
198 | { |
199 | deliver_domain_parent = addr->parent->domain; | |
d6c82d7b JH |
200 | deliver_localpart_parent = !addr->parent->router |
201 | ? addr->parent->local_part | |
202 | : addr->parent->router->caseful_local_part | |
203 | ? addr->parent->cc_local_part | |
204 | : addr->parent->lc_local_part; | |
059ec3d9 PH |
205 | |
206 | /* File deliveries have their own flag because they need to be picked out | |
207 | as special more often. */ | |
208 | ||
209 | if (testflag(addr, af_pfr)) | |
210 | { | |
d6c82d7b JH |
211 | if (testflag(addr, af_file)) address_file = addr->local_part; |
212 | else if (deliver_localpart[0] == '|') address_pipe = addr->local_part; | |
059ec3d9 PH |
213 | deliver_localpart = addr->parent->local_part; |
214 | deliver_localpart_prefix = addr->parent->prefix; | |
215 | deliver_localpart_suffix = addr->parent->suffix; | |
216 | } | |
217 | } | |
8523533c TK |
218 | |
219 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
220 | /* Set expansion variables related to Brightmail AntiSpam */ | |
221 | bmi_base64_verdict = bmi_get_base64_verdict(deliver_localpart_orig, deliver_domain_orig); | |
222 | bmi_base64_tracker_verdict = bmi_get_base64_tracker_verdict(bmi_base64_verdict); | |
223 | /* get message delivery status (0 - don't deliver | 1 - deliver) */ | |
224 | bmi_deliver = bmi_get_delivery_status(bmi_base64_verdict); | |
225 | /* if message is to be delivered, get eventual alternate location */ | |
d6c82d7b | 226 | if (bmi_deliver == 1) |
8523533c | 227 | bmi_alt_location = bmi_get_alt_location(bmi_base64_verdict); |
8523533c TK |
228 | #endif |
229 | ||
059ec3d9 PH |
230 | } |
231 | ||
232 | /* For multiple addresses, don't set local part, and leave the domain and | |
f7fd3850 PH |
233 | self_hostname set only if it is the same for all of them. It is possible to |
234 | have multiple pipe and file addresses, but only when all addresses have routed | |
235 | to the same pipe or file. */ | |
059ec3d9 PH |
236 | |
237 | else | |
238 | { | |
239 | address_item *addr2; | |
f7fd3850 PH |
240 | if (testflag(addr, af_pfr)) |
241 | { | |
d6c82d7b JH |
242 | if (testflag(addr, af_file)) address_file = addr->local_part; |
243 | else if (addr->local_part[0] == '|') address_pipe = addr->local_part; | |
f7fd3850 | 244 | } |
d6c82d7b | 245 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 | 246 | { |
d6c82d7b | 247 | if (deliver_domain && Ustrcmp(deliver_domain, addr2->domain) != 0) |
059ec3d9 | 248 | deliver_domain = NULL; |
d6c82d7b JH |
249 | if ( self_hostname |
250 | && ( !addr2->self_hostname | |
251 | || Ustrcmp(self_hostname, addr2->self_hostname) != 0 | |
252 | ) ) | |
059ec3d9 | 253 | self_hostname = NULL; |
d6c82d7b | 254 | if (!deliver_domain && !self_hostname) break; |
059ec3d9 PH |
255 | } |
256 | } | |
257 | } | |
258 | ||
259 | ||
260 | ||
261 | ||
262 | /************************************************* | |
263 | * Open a msglog file * | |
264 | *************************************************/ | |
265 | ||
266 | /* This function is used both for normal message logs, and for files in the | |
267 | msglog directory that are used to catch output from pipes. Try to create the | |
268 | directory if it does not exist. From release 4.21, normal message logs should | |
269 | be created when the message is received. | |
270 | ||
271 | Argument: | |
272 | filename the file name | |
273 | mode the mode required | |
274 | error used for saying what failed | |
275 | ||
276 | Returns: a file descriptor, or -1 (with errno set) | |
277 | */ | |
278 | ||
279 | static int | |
280 | open_msglog_file(uschar *filename, int mode, uschar **error) | |
281 | { | |
282 | int fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode); | |
283 | ||
284 | if (fd < 0 && errno == ENOENT) | |
285 | { | |
41313d92 JH |
286 | (void)directory_make(spool_directory, |
287 | spool_sname(US"msglog", message_subdir), | |
288 | MSGLOG_DIRECTORY_MODE, TRUE); | |
059ec3d9 PH |
289 | fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode); |
290 | } | |
291 | ||
292 | /* Set the close-on-exec flag and change the owner to the exim uid/gid (this | |
293 | function is called as root). Double check the mode, because the group setting | |
294 | doesn't always get set automatically. */ | |
295 | ||
296 | if (fd >= 0) | |
297 | { | |
ff790e47 | 298 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
059ec3d9 PH |
299 | if (fchown(fd, exim_uid, exim_gid) < 0) |
300 | { | |
301 | *error = US"chown"; | |
302 | return -1; | |
303 | } | |
304 | if (fchmod(fd, mode) < 0) | |
305 | { | |
306 | *error = US"chmod"; | |
307 | return -1; | |
308 | } | |
309 | } | |
310 | else *error = US"create"; | |
311 | ||
312 | return fd; | |
313 | } | |
314 | ||
315 | ||
316 | ||
317 | ||
318 | /************************************************* | |
319 | * Write to msglog if required * | |
320 | *************************************************/ | |
321 | ||
322 | /* Write to the message log, if configured. This function may also be called | |
323 | from transports. | |
324 | ||
325 | Arguments: | |
326 | format a string format | |
327 | ||
328 | Returns: nothing | |
329 | */ | |
330 | ||
331 | void | |
332 | deliver_msglog(const char *format, ...) | |
333 | { | |
334 | va_list ap; | |
335 | if (!message_logs) return; | |
336 | va_start(ap, format); | |
337 | vfprintf(message_log, format, ap); | |
338 | fflush(message_log); | |
339 | va_end(ap); | |
340 | } | |
341 | ||
342 | ||
343 | ||
344 | ||
345 | /************************************************* | |
346 | * Replicate status for batch * | |
347 | *************************************************/ | |
348 | ||
349 | /* When a transport handles a batch of addresses, it may treat them | |
350 | individually, or it may just put the status in the first one, and return FALSE, | |
351 | requesting that the status be copied to all the others externally. This is the | |
352 | replication function. As well as the status, it copies the transport pointer, | |
353 | which may have changed if appendfile passed the addresses on to a different | |
354 | transport. | |
355 | ||
356 | Argument: pointer to the first address in a chain | |
357 | Returns: nothing | |
358 | */ | |
359 | ||
360 | static void | |
361 | replicate_status(address_item *addr) | |
362 | { | |
363 | address_item *addr2; | |
d6c82d7b | 364 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 | 365 | { |
d6c82d7b | 366 | addr2->transport = addr->transport; |
059ec3d9 | 367 | addr2->transport_return = addr->transport_return; |
d6c82d7b JH |
368 | addr2->basic_errno = addr->basic_errno; |
369 | addr2->more_errno = addr->more_errno; | |
370 | addr2->special_action = addr->special_action; | |
371 | addr2->message = addr->message; | |
372 | addr2->user_message = addr->user_message; | |
059ec3d9 PH |
373 | } |
374 | } | |
375 | ||
376 | ||
377 | ||
378 | /************************************************* | |
379 | * Compare lists of hosts * | |
380 | *************************************************/ | |
381 | ||
382 | /* This function is given two pointers to chains of host items, and it yields | |
383 | TRUE if the lists refer to the same hosts in the same order, except that | |
384 | ||
385 | (1) Multiple hosts with the same non-negative MX values are permitted to appear | |
386 | in different orders. Round-robinning nameservers can cause this to happen. | |
387 | ||
388 | (2) Multiple hosts with the same negative MX values less than MX_NONE are also | |
389 | permitted to appear in different orders. This is caused by randomizing | |
390 | hosts lists. | |
391 | ||
392 | This enables Exim to use a single SMTP transaction for sending to two entirely | |
393 | different domains that happen to end up pointing at the same hosts. | |
394 | ||
395 | Arguments: | |
396 | one points to the first host list | |
397 | two points to the second host list | |
398 | ||
399 | Returns: TRUE if the lists refer to the same host set | |
400 | */ | |
401 | ||
402 | static BOOL | |
403 | same_hosts(host_item *one, host_item *two) | |
404 | { | |
d6c82d7b | 405 | while (one && two) |
059ec3d9 PH |
406 | { |
407 | if (Ustrcmp(one->name, two->name) != 0) | |
408 | { | |
409 | int mx = one->mx; | |
410 | host_item *end_one = one; | |
411 | host_item *end_two = two; | |
412 | ||
413 | /* Batch up only if there was no MX and the list was not randomized */ | |
414 | ||
415 | if (mx == MX_NONE) return FALSE; | |
416 | ||
417 | /* Find the ends of the shortest sequence of identical MX values */ | |
418 | ||
d6c82d7b JH |
419 | while ( end_one->next && end_one->next->mx == mx |
420 | && end_two->next && end_two->next->mx == mx) | |
059ec3d9 PH |
421 | { |
422 | end_one = end_one->next; | |
423 | end_two = end_two->next; | |
424 | } | |
425 | ||
426 | /* If there aren't any duplicates, there's no match. */ | |
427 | ||
428 | if (end_one == one) return FALSE; | |
429 | ||
430 | /* For each host in the 'one' sequence, check that it appears in the 'two' | |
431 | sequence, returning FALSE if not. */ | |
432 | ||
433 | for (;;) | |
434 | { | |
435 | host_item *hi; | |
436 | for (hi = two; hi != end_two->next; hi = hi->next) | |
437 | if (Ustrcmp(one->name, hi->name) == 0) break; | |
438 | if (hi == end_two->next) return FALSE; | |
439 | if (one == end_one) break; | |
440 | one = one->next; | |
441 | } | |
442 | ||
443 | /* All the hosts in the 'one' sequence were found in the 'two' sequence. | |
444 | Ensure both are pointing at the last host, and carry on as for equality. */ | |
445 | ||
446 | two = end_two; | |
447 | } | |
448 | ||
449 | /* Hosts matched */ | |
450 | ||
451 | one = one->next; | |
452 | two = two->next; | |
453 | } | |
454 | ||
455 | /* True if both are NULL */ | |
456 | ||
457 | return (one == two); | |
458 | } | |
459 | ||
460 | ||
461 | ||
462 | /************************************************* | |
463 | * Compare header lines * | |
464 | *************************************************/ | |
465 | ||
466 | /* This function is given two pointers to chains of header items, and it yields | |
467 | TRUE if they are the same header texts in the same order. | |
468 | ||
469 | Arguments: | |
470 | one points to the first header list | |
471 | two points to the second header list | |
472 | ||
473 | Returns: TRUE if the lists refer to the same header set | |
474 | */ | |
475 | ||
476 | static BOOL | |
477 | same_headers(header_line *one, header_line *two) | |
478 | { | |
d6c82d7b | 479 | for (;; one = one->next, two = two->next) |
059ec3d9 PH |
480 | { |
481 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 482 | if (!one || !two) return FALSE; |
059ec3d9 | 483 | if (Ustrcmp(one->text, two->text) != 0) return FALSE; |
059ec3d9 PH |
484 | } |
485 | } | |
486 | ||
487 | ||
488 | ||
489 | /************************************************* | |
490 | * Compare string settings * | |
491 | *************************************************/ | |
492 | ||
493 | /* This function is given two pointers to strings, and it returns | |
494 | TRUE if they are the same pointer, or if the two strings are the same. | |
495 | ||
496 | Arguments: | |
497 | one points to the first string | |
498 | two points to the second string | |
499 | ||
500 | Returns: TRUE or FALSE | |
501 | */ | |
502 | ||
503 | static BOOL | |
504 | same_strings(uschar *one, uschar *two) | |
505 | { | |
506 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 507 | if (!one || !two) return FALSE; |
059ec3d9 PH |
508 | return (Ustrcmp(one, two) == 0); |
509 | } | |
510 | ||
511 | ||
512 | ||
513 | /************************************************* | |
514 | * Compare uid/gid for addresses * | |
515 | *************************************************/ | |
516 | ||
517 | /* This function is given a transport and two addresses. It yields TRUE if the | |
518 | uid/gid/initgroups settings for the two addresses are going to be the same when | |
519 | they are delivered. | |
520 | ||
521 | Arguments: | |
522 | tp the transort | |
523 | addr1 the first address | |
524 | addr2 the second address | |
525 | ||
526 | Returns: TRUE or FALSE | |
527 | */ | |
528 | ||
529 | static BOOL | |
530 | same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2) | |
531 | { | |
d6c82d7b JH |
532 | if ( !tp->uid_set && !tp->expand_uid |
533 | && !tp->deliver_as_creator | |
534 | && ( testflag(addr1, af_uid_set) != testflag(addr2, af_gid_set) | |
535 | || ( testflag(addr1, af_uid_set) | |
536 | && ( addr1->uid != addr2->uid | |
537 | || testflag(addr1, af_initgroups) != testflag(addr2, af_initgroups) | |
538 | ) ) ) ) | |
539 | return FALSE; | |
059ec3d9 | 540 | |
d6c82d7b JH |
541 | if ( !tp->gid_set && !tp->expand_gid |
542 | && ( testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set) | |
543 | || ( testflag(addr1, af_gid_set) | |
544 | && addr1->gid != addr2->gid | |
545 | ) ) ) | |
546 | return FALSE; | |
059ec3d9 PH |
547 | |
548 | return TRUE; | |
549 | } | |
550 | ||
551 | ||
552 | ||
553 | ||
554 | /************************************************* | |
555 | * Record that an address is complete * | |
556 | *************************************************/ | |
557 | ||
558 | /* This function records that an address is complete. This is straightforward | |
559 | for most addresses, where the unique address is just the full address with the | |
560 | domain lower cased. For homonyms (addresses that are the same as one of their | |
561 | ancestors) their are complications. Their unique addresses have \x\ prepended | |
562 | (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and | |
563 | cousins. | |
564 | ||
565 | Exim used to record the unique addresses of homonyms as "complete". This, | |
566 | however, fails when the pattern of redirection varies over time (e.g. if taking | |
567 | unseen copies at only some times of day) because the prepended numbers may vary | |
568 | from one delivery run to the next. This problem is solved by never recording | |
569 | prepended unique addresses as complete. Instead, when a homonymic address has | |
570 | actually been delivered via a transport, we record its basic unique address | |
571 | followed by the name of the transport. This is checked in subsequent delivery | |
572 | runs whenever an address is routed to a transport. | |
573 | ||
574 | If the completed address is a top-level one (has no parent, which means it | |
575 | cannot be homonymic) we also add the original address to the non-recipients | |
576 | tree, so that it gets recorded in the spool file and therefore appears as | |
577 | "done" in any spool listings. The original address may differ from the unique | |
578 | address in the case of the domain. | |
579 | ||
580 | Finally, this function scans the list of duplicates, marks as done any that | |
581 | match this address, and calls child_done() for their ancestors. | |
582 | ||
583 | Arguments: | |
584 | addr address item that has been completed | |
585 | now current time as a string | |
586 | ||
587 | Returns: nothing | |
588 | */ | |
589 | ||
590 | static void | |
591 | address_done(address_item *addr, uschar *now) | |
592 | { | |
593 | address_item *dup; | |
594 | ||
595 | update_spool = TRUE; /* Ensure spool gets updated */ | |
596 | ||
597 | /* Top-level address */ | |
598 | ||
d6c82d7b | 599 | if (!addr->parent) |
059ec3d9 PH |
600 | { |
601 | tree_add_nonrecipient(addr->unique); | |
602 | tree_add_nonrecipient(addr->address); | |
603 | } | |
604 | ||
605 | /* Homonymous child address */ | |
606 | ||
607 | else if (testflag(addr, af_homonym)) | |
608 | { | |
d6c82d7b | 609 | if (addr->transport) |
059ec3d9 PH |
610 | tree_add_nonrecipient( |
611 | string_sprintf("%s/%s", addr->unique + 3, addr->transport->name)); | |
059ec3d9 PH |
612 | } |
613 | ||
614 | /* Non-homonymous child address */ | |
615 | ||
616 | else tree_add_nonrecipient(addr->unique); | |
617 | ||
618 | /* Check the list of duplicate addresses and ensure they are now marked | |
619 | done as well. */ | |
620 | ||
d6c82d7b | 621 | for (dup = addr_duplicate; dup; dup = dup->next) |
059ec3d9 PH |
622 | if (Ustrcmp(addr->unique, dup->unique) == 0) |
623 | { | |
57730b52 | 624 | tree_add_nonrecipient(dup->unique); |
059ec3d9 PH |
625 | child_done(dup, now); |
626 | } | |
059ec3d9 PH |
627 | } |
628 | ||
629 | ||
630 | ||
631 | ||
632 | /************************************************* | |
633 | * Decrease counts in parents and mark done * | |
634 | *************************************************/ | |
635 | ||
636 | /* This function is called when an address is complete. If there is a parent | |
637 | address, its count of children is decremented. If there are still other | |
638 | children outstanding, the function exits. Otherwise, if the count has become | |
639 | zero, address_done() is called to mark the parent and its duplicates complete. | |
640 | Then loop for any earlier ancestors. | |
641 | ||
642 | Arguments: | |
643 | addr points to the completed address item | |
644 | now the current time as a string, for writing to the message log | |
645 | ||
646 | Returns: nothing | |
647 | */ | |
648 | ||
649 | static void | |
650 | child_done(address_item *addr, uschar *now) | |
651 | { | |
652 | address_item *aa; | |
d6c82d7b | 653 | while (addr->parent) |
059ec3d9 PH |
654 | { |
655 | addr = addr->parent; | |
656 | if ((addr->child_count -= 1) > 0) return; /* Incomplete parent */ | |
657 | address_done(addr, now); | |
658 | ||
659 | /* Log the completion of all descendents only when there is no ancestor with | |
660 | the same original address. */ | |
661 | ||
d6c82d7b | 662 | for (aa = addr->parent; aa; aa = aa->parent) |
059ec3d9 | 663 | if (Ustrcmp(aa->address, addr->address) == 0) break; |
d6c82d7b | 664 | if (aa) continue; |
059ec3d9 PH |
665 | |
666 | deliver_msglog("%s %s: children all complete\n", now, addr->address); | |
667 | DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address); | |
668 | } | |
669 | } | |
670 | ||
671 | ||
672 | ||
ac881e27 TF |
673 | /************************************************* |
674 | * Delivery logging support functions * | |
675 | *************************************************/ | |
676 | ||
677 | /* The LOGGING() checks in d_log_interface() are complicated for backwards | |
678 | compatibility. When outgoing interface logging was originally added, it was | |
679 | conditional on just incoming_interface (which is off by default). The | |
680 | outgoing_interface option is on by default to preserve this behaviour, but | |
681 | you can enable incoming_interface and disable outgoing_interface to get I= | |
682 | fields on incoming lines only. | |
683 | ||
684 | Arguments: | |
685 | s The log line buffer | |
686 | sizep Pointer to the buffer size | |
687 | ptrp Pointer to current index into buffer | |
688 | addr The address to be logged | |
689 | ||
690 | Returns: New value for s | |
691 | */ | |
059ec3d9 | 692 | |
67d81c10 | 693 | static uschar * |
ac881e27 | 694 | d_log_interface(uschar *s, int *sizep, int *ptrp) |
67d81c10 | 695 | { |
ac881e27 | 696 | if (LOGGING(incoming_interface) && LOGGING(outgoing_interface) |
d6c82d7b | 697 | && sending_ip_address) |
ac881e27 TF |
698 | { |
699 | s = string_append(s, sizep, ptrp, 2, US" I=[", sending_ip_address); | |
d6c82d7b JH |
700 | s = LOGGING(outgoing_port) |
701 | ? string_append(s, sizep, ptrp, 2, US"]:", | |
702 | string_sprintf("%d", sending_port)) | |
c2f669a4 | 703 | : string_catn(s, sizep, ptrp, US"]", 1); |
ac881e27 TF |
704 | } |
705 | return s; | |
67d81c10 JH |
706 | } |
707 | ||
ac881e27 TF |
708 | |
709 | ||
710 | static uschar * | |
fc16abb4 | 711 | d_hostlog(uschar * s, int * sp, int * pp, address_item * addr) |
ac881e27 | 712 | { |
fc16abb4 JH |
713 | host_item * h = addr->host_used; |
714 | ||
715 | s = string_append(s, sp, pp, 2, US" H=", h->name); | |
716 | ||
717 | if (LOGGING(dnssec) && h->dnssec == DS_YES) | |
718 | s = string_cat(s, sp, pp, US" DS"); | |
719 | ||
720 | s = string_append(s, sp, pp, 3, US" [", h->address, US"]"); | |
721 | ||
ac881e27 | 722 | if (LOGGING(outgoing_port)) |
fc16abb4 | 723 | s = string_append(s, sp, pp, 2, US":", string_sprintf("%d", h->port)); |
e6d2a989 JH |
724 | |
725 | #ifdef SUPPORT_SOCKS | |
726 | if (LOGGING(proxy) && proxy_local_address) | |
727 | { | |
fc16abb4 | 728 | s = string_append(s, sp, pp, 3, US" PRX=[", proxy_local_address, US"]"); |
e6d2a989 | 729 | if (LOGGING(outgoing_port)) |
fc16abb4 | 730 | s = string_append(s, sp, pp, 2, US":", string_sprintf("%d", |
e6d2a989 JH |
731 | proxy_local_port)); |
732 | } | |
733 | #endif | |
734 | ||
fc16abb4 | 735 | return d_log_interface(s, sp, pp); |
ac881e27 TF |
736 | } |
737 | ||
738 | ||
739 | ||
e6d2a989 JH |
740 | |
741 | ||
67d81c10 JH |
742 | #ifdef SUPPORT_TLS |
743 | static uschar * | |
744 | d_tlslog(uschar * s, int * sizep, int * ptrp, address_item * addr) | |
745 | { | |
d6c82d7b | 746 | if (LOGGING(tls_cipher) && addr->cipher) |
ac881e27 | 747 | s = string_append(s, sizep, ptrp, 2, US" X=", addr->cipher); |
d6c82d7b | 748 | if (LOGGING(tls_certificate_verified) && addr->cipher) |
ac881e27 TF |
749 | s = string_append(s, sizep, ptrp, 2, US" CV=", |
750 | testflag(addr, af_cert_verified) | |
751 | ? | |
53a7196b | 752 | #ifdef EXPERIMENTAL_DANE |
ac881e27 TF |
753 | testflag(addr, af_dane_verified) |
754 | ? "dane" | |
755 | : | |
53a7196b | 756 | #endif |
ac881e27 TF |
757 | "yes" |
758 | : "no"); | |
d6c82d7b | 759 | if (LOGGING(tls_peerdn) && addr->peerdn) |
ac881e27 TF |
760 | s = string_append(s, sizep, ptrp, 3, US" DN=\"", |
761 | string_printing(addr->peerdn), US"\""); | |
762 | return s; | |
67d81c10 JH |
763 | } |
764 | #endif | |
765 | ||
a7538db1 | 766 | |
14a465c3 JH |
767 | |
768 | ||
0cbf2b82 | 769 | #ifndef DISABLE_EVENT |
b30275b8 | 770 | uschar * |
55414b25 | 771 | event_raise(uschar * action, const uschar * event, uschar * ev_data) |
a7538db1 JH |
772 | { |
773 | uschar * s; | |
774 | if (action) | |
775 | { | |
776 | DEBUG(D_deliver) | |
774ef2d7 | 777 | debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n", |
a7538db1 JH |
778 | event, |
779 | action, deliver_host_address); | |
780 | ||
774ef2d7 JH |
781 | event_name = event; |
782 | event_data = ev_data; | |
a7538db1 JH |
783 | |
784 | if (!(s = expand_string(action)) && *expand_string_message) | |
785 | log_write(0, LOG_MAIN|LOG_PANIC, | |
774ef2d7 | 786 | "failed to expand event_action %s in %s: %s\n", |
a7538db1 JH |
787 | event, transport_name, expand_string_message); |
788 | ||
774ef2d7 | 789 | event_name = event_data = NULL; |
a7538db1 JH |
790 | |
791 | /* If the expansion returns anything but an empty string, flag for | |
792 | the caller to modify his normal processing | |
793 | */ | |
794 | if (s && *s) | |
795 | { | |
796 | DEBUG(D_deliver) | |
774ef2d7 | 797 | debug_printf("Event(%s): event_action returned \"%s\"\n", event, s); |
b30275b8 | 798 | return s; |
a7538db1 JH |
799 | } |
800 | } | |
b30275b8 | 801 | return NULL; |
a7538db1 | 802 | } |
14a465c3 | 803 | |
5ef5dd52 | 804 | void |
55414b25 | 805 | msg_event_raise(const uschar * event, const address_item * addr) |
14a465c3 | 806 | { |
55414b25 | 807 | const uschar * save_domain = deliver_domain; |
14a465c3 | 808 | uschar * save_local = deliver_localpart; |
55414b25 | 809 | const uschar * save_host = deliver_host; |
5ef5dd52 JB |
810 | const uschar * save_address = deliver_host_address; |
811 | const int save_port = deliver_host_port; | |
14a465c3 JH |
812 | |
813 | if (!addr->transport) | |
814 | return; | |
815 | ||
816 | router_name = addr->router ? addr->router->name : NULL; | |
817 | transport_name = addr->transport->name; | |
818 | deliver_domain = addr->domain; | |
819 | deliver_localpart = addr->local_part; | |
c562fd30 | 820 | deliver_host = addr->host_used ? addr->host_used->name : NULL; |
14a465c3 | 821 | |
774ef2d7 | 822 | (void) event_raise(addr->transport->event_action, event, |
5ef5dd52 JB |
823 | addr->host_used |
824 | || Ustrcmp(addr->transport->driver_name, "smtp") == 0 | |
825 | || Ustrcmp(addr->transport->driver_name, "lmtp") == 0 | |
826 | ? addr->message : NULL); | |
14a465c3 | 827 | |
5ef5dd52 JB |
828 | deliver_host_port = save_port; |
829 | deliver_host_address = save_address; | |
c562fd30 | 830 | deliver_host = save_host; |
14a465c3 JH |
831 | deliver_localpart = save_local; |
832 | deliver_domain = save_domain; | |
833 | router_name = transport_name = NULL; | |
834 | } | |
0cbf2b82 | 835 | #endif /*DISABLE_EVENT*/ |
14a465c3 JH |
836 | |
837 | ||
a7538db1 | 838 | |
817d9f57 | 839 | /* If msg is NULL this is a delivery log and logchar is used. Otherwise |
67d81c10 | 840 | this is a nonstandard call; no two-character delivery flag is written |
817d9f57 JH |
841 | but sender-host and sender are prefixed and "msg" is inserted in the log line. |
842 | ||
843 | Arguments: | |
844 | flags passed to log_write() | |
845 | */ | |
e4bdf652 | 846 | void |
817d9f57 | 847 | delivery_log(int flags, address_item * addr, int logchar, uschar * msg) |
e4bdf652 JH |
848 | { |
849 | uschar *log_address; | |
850 | int size = 256; /* Used for a temporary, */ | |
851 | int ptr = 0; /* expanding buffer, for */ | |
852 | uschar *s; /* building log lines; */ | |
853 | void *reset_point; /* released afterwards. */ | |
854 | ||
e4bdf652 JH |
855 | /* Log the delivery on the main log. We use an extensible string to build up |
856 | the log line, and reset the store afterwards. Remote deliveries should always | |
857 | have a pointer to the host item that succeeded; local deliveries can have a | |
858 | pointer to a single host item in their host list, for use by the transport. */ | |
859 | ||
0cbf2b82 | 860 | #ifndef DISABLE_EVENT |
a7538db1 | 861 | /* presume no successful remote delivery */ |
783b385f | 862 | lookup_dnssec_authenticated = NULL; |
d68218c7 JH |
863 | #endif |
864 | ||
e4bdf652 | 865 | s = reset_point = store_get(size); |
e4bdf652 | 866 | |
6c6d6e48 | 867 | log_address = string_log_address(addr, LOGGING(all_parents), TRUE); |
817d9f57 JH |
868 | if (msg) |
869 | s = string_append(s, &size, &ptr, 3, host_and_ident(TRUE), US" ", log_address); | |
870 | else | |
871 | { | |
872 | s[ptr++] = logchar; | |
873 | s = string_append(s, &size, &ptr, 2, US"> ", log_address); | |
874 | } | |
e4bdf652 | 875 | |
6c6d6e48 | 876 | if (LOGGING(sender_on_delivery) || msg) |
3c8b3577 | 877 | s = string_append(s, &size, &ptr, 3, US" F=<", |
8c5d388a | 878 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
879 | testflag(addr, af_utf8_downcvt) |
880 | ? string_address_utf8_to_alabel(sender_address, NULL) | |
881 | : | |
882 | #endif | |
883 | sender_address, | |
884 | US">"); | |
e4bdf652 | 885 | |
afa6d3ad JH |
886 | if (*queue_name) |
887 | s = string_append(s, &size, &ptr, 2, US" Q=", queue_name); | |
888 | ||
e4bdf652 | 889 | #ifdef EXPERIMENTAL_SRS |
d43cbe25 JH |
890 | if(addr->prop.srs_sender) |
891 | s = string_append(s, &size, &ptr, 3, US" SRS=<", addr->prop.srs_sender, US">"); | |
e4bdf652 JH |
892 | #endif |
893 | ||
894 | /* You might think that the return path must always be set for a successful | |
895 | delivery; indeed, I did for some time, until this statement crashed. The case | |
896 | when it is not set is for a delivery to /dev/null which is optimised by not | |
897 | being run at all. */ | |
898 | ||
d6c82d7b | 899 | if (used_return_path && LOGGING(return_path_on_delivery)) |
e4bdf652 JH |
900 | s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">"); |
901 | ||
817d9f57 JH |
902 | if (msg) |
903 | s = string_append(s, &size, &ptr, 2, US" ", msg); | |
e4bdf652 | 904 | |
817d9f57 | 905 | /* For a delivery from a system filter, there may not be a router */ |
d6c82d7b | 906 | if (addr->router) |
e4bdf652 JH |
907 | s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name); |
908 | ||
909 | s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name); | |
910 | ||
6c6d6e48 | 911 | if (LOGGING(delivery_size)) |
e4bdf652 JH |
912 | s = string_append(s, &size, &ptr, 2, US" S=", |
913 | string_sprintf("%d", transport_count)); | |
914 | ||
915 | /* Local delivery */ | |
916 | ||
917 | if (addr->transport->info->local) | |
918 | { | |
a7538db1 | 919 | if (addr->host_list) |
e4bdf652 | 920 | s = string_append(s, &size, &ptr, 2, US" H=", addr->host_list->name); |
ac881e27 | 921 | s = d_log_interface(s, &size, &ptr); |
d6c82d7b | 922 | if (addr->shadow_message) |
c2f669a4 | 923 | s = string_cat(s, &size, &ptr, addr->shadow_message); |
e4bdf652 JH |
924 | } |
925 | ||
926 | /* Remote delivery */ | |
927 | ||
928 | else | |
929 | { | |
783b385f | 930 | if (addr->host_used) |
e4bdf652 | 931 | { |
67d81c10 | 932 | s = d_hostlog(s, &size, &ptr, addr); |
e4bdf652 | 933 | if (continue_sequence > 1) |
c2f669a4 | 934 | s = string_catn(s, &size, &ptr, US"*", 1); |
d68218c7 | 935 | |
0cbf2b82 | 936 | #ifndef DISABLE_EVENT |
a7538db1 JH |
937 | deliver_host_address = addr->host_used->address; |
938 | deliver_host_port = addr->host_used->port; | |
029f4192 | 939 | deliver_host = addr->host_used->name; |
783b385f JH |
940 | |
941 | /* DNS lookup status */ | |
942 | lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes" | |
943 | : addr->host_used->dnssec==DS_NO ? US"no" | |
944 | : NULL; | |
a7538db1 | 945 | #endif |
e4bdf652 JH |
946 | } |
947 | ||
a7538db1 | 948 | #ifdef SUPPORT_TLS |
67d81c10 | 949 | s = d_tlslog(s, &size, &ptr, addr); |
a7538db1 | 950 | #endif |
e4bdf652 | 951 | |
018c60d7 | 952 | if (addr->authenticator) |
6f123593 | 953 | { |
018c60d7 JH |
954 | s = string_append(s, &size, &ptr, 2, US" A=", addr->authenticator); |
955 | if (addr->auth_id) | |
c8e2fc1e | 956 | { |
018c60d7 | 957 | s = string_append(s, &size, &ptr, 2, US":", addr->auth_id); |
6c6d6e48 | 958 | if (LOGGING(smtp_mailauth) && addr->auth_sndr) |
018c60d7 | 959 | s = string_append(s, &size, &ptr, 2, US":", addr->auth_sndr); |
c8e2fc1e | 960 | } |
6f123593 JH |
961 | } |
962 | ||
a7538db1 | 963 | #ifndef DISABLE_PRDR |
fd98a5c6 JH |
964 | if (addr->flags & af_prdr_used) |
965 | s = string_append(s, &size, &ptr, 1, US" PRDR"); | |
a7538db1 | 966 | #endif |
76f44207 WB |
967 | } |
968 | ||
969 | /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */ | |
fd98a5c6 | 970 | |
d6c82d7b JH |
971 | if ( LOGGING(smtp_confirmation) |
972 | && addr->message | |
973 | && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0) | |
974 | ) | |
76f44207 | 975 | { |
b980ed83 | 976 | unsigned i; |
1c5b1499 | 977 | unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024; |
76f44207 WB |
978 | uschar *p = big_buffer; |
979 | uschar *ss = addr->message; | |
980 | *p++ = '\"'; | |
b980ed83 | 981 | for (i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */ |
e4bdf652 | 982 | { |
27520a68 | 983 | if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */ |
76f44207 | 984 | *p++ = ss[i]; |
e4bdf652 | 985 | } |
76f44207 WB |
986 | *p++ = '\"'; |
987 | *p = 0; | |
988 | s = string_append(s, &size, &ptr, 2, US" C=", big_buffer); | |
e4bdf652 JH |
989 | } |
990 | ||
991 | /* Time on queue and actual time taken to deliver */ | |
992 | ||
6c6d6e48 | 993 | if (LOGGING(queue_time)) |
e4bdf652 | 994 | s = string_append(s, &size, &ptr, 2, US" QT=", |
19050083 | 995 | readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) ); |
e4bdf652 | 996 | |
6c6d6e48 | 997 | if (LOGGING(deliver_time)) |
e4bdf652 JH |
998 | s = string_append(s, &size, &ptr, 2, US" DT=", |
999 | readconf_printtime(addr->more_errno)); | |
e4bdf652 JH |
1000 | |
1001 | /* string_cat() always leaves room for the terminator. Release the | |
1002 | store we used to build the line after writing it. */ | |
1003 | ||
1004 | s[ptr] = 0; | |
817d9f57 | 1005 | log_write(0, flags, "%s", s); |
d68218c7 | 1006 | |
0cbf2b82 | 1007 | #ifndef DISABLE_EVENT |
774ef2d7 | 1008 | if (!msg) msg_event_raise(US"msg:delivery", addr); |
d68218c7 | 1009 | #endif |
14a465c3 | 1010 | |
e4bdf652 JH |
1011 | store_reset(reset_point); |
1012 | return; | |
1013 | } | |
1014 | ||
1015 | ||
1016 | ||
059ec3d9 PH |
1017 | /************************************************* |
1018 | * Actions at the end of handling an address * | |
1019 | *************************************************/ | |
1020 | ||
1021 | /* This is a function for processing a single address when all that can be done | |
1022 | with it has been done. | |
1023 | ||
1024 | Arguments: | |
1025 | addr points to the address block | |
1026 | result the result of the delivery attempt | |
1027 | logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC) | |
1028 | driver_type indicates which type of driver (transport, or router) was last | |
1029 | to process the address | |
1030 | logchar '=' or '-' for use when logging deliveries with => or -> | |
1031 | ||
1032 | Returns: nothing | |
1033 | */ | |
1034 | ||
1035 | static void | |
1036 | post_process_one(address_item *addr, int result, int logflags, int driver_type, | |
1037 | int logchar) | |
1038 | { | |
1039 | uschar *now = tod_stamp(tod_log); | |
1040 | uschar *driver_kind = NULL; | |
1041 | uschar *driver_name = NULL; | |
1042 | uschar *log_address; | |
1043 | ||
1044 | int size = 256; /* Used for a temporary, */ | |
1045 | int ptr = 0; /* expanding buffer, for */ | |
1046 | uschar *s; /* building log lines; */ | |
1047 | void *reset_point; /* released afterwards. */ | |
1048 | ||
059ec3d9 PH |
1049 | DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result); |
1050 | ||
1051 | /* Set up driver kind and name for logging. Disable logging if the router or | |
1052 | transport has disabled it. */ | |
1053 | ||
1054 | if (driver_type == DTYPE_TRANSPORT) | |
1055 | { | |
d6c82d7b | 1056 | if (addr->transport) |
059ec3d9 PH |
1057 | { |
1058 | driver_name = addr->transport->name; | |
1059 | driver_kind = US" transport"; | |
1060 | disable_logging = addr->transport->disable_logging; | |
1061 | } | |
1062 | else driver_kind = US"transporting"; | |
1063 | } | |
1064 | else if (driver_type == DTYPE_ROUTER) | |
1065 | { | |
d6c82d7b | 1066 | if (addr->router) |
059ec3d9 PH |
1067 | { |
1068 | driver_name = addr->router->name; | |
1069 | driver_kind = US" router"; | |
1070 | disable_logging = addr->router->disable_logging; | |
1071 | } | |
1072 | else driver_kind = US"routing"; | |
1073 | } | |
1074 | ||
1075 | /* If there's an error message set, ensure that it contains only printing | |
1076 | characters - it should, but occasionally things slip in and this at least | |
49c2d5ea PH |
1077 | stops the log format from getting wrecked. We also scan the message for an LDAP |
1078 | expansion item that has a password setting, and flatten the password. This is a | |
1079 | fudge, but I don't know a cleaner way of doing this. (If the item is badly | |
1080 | malformed, it won't ever have gone near LDAP.) */ | |
059ec3d9 | 1081 | |
d6c82d7b | 1082 | if (addr->message) |
49c2d5ea | 1083 | { |
55414b25 | 1084 | const uschar * s = string_printing(addr->message); |
f42deca9 JH |
1085 | |
1086 | /* deconst cast ok as string_printing known to have alloc'n'copied */ | |
1087 | addr->message = expand_hide_passwords(US s); | |
49c2d5ea | 1088 | } |
059ec3d9 PH |
1089 | |
1090 | /* If we used a transport that has one of the "return_output" options set, and | |
1091 | if it did in fact generate some output, then for return_output we treat the | |
1092 | message as failed if it was not already set that way, so that the output gets | |
1093 | returned to the sender, provided there is a sender to send it to. For | |
1094 | return_fail_output, do this only if the delivery failed. Otherwise we just | |
1095 | unlink the file, and remove the name so that if the delivery failed, we don't | |
1096 | try to send back an empty or unwanted file. The log_output options operate only | |
1097 | on a non-empty file. | |
1098 | ||
1099 | In any case, we close the message file, because we cannot afford to leave a | |
1100 | file-descriptor for one address while processing (maybe very many) others. */ | |
1101 | ||
d6c82d7b | 1102 | if (addr->return_file >= 0 && addr->return_filename) |
059ec3d9 PH |
1103 | { |
1104 | BOOL return_output = FALSE; | |
1105 | struct stat statbuf; | |
54fc8428 | 1106 | (void)EXIMfsync(addr->return_file); |
059ec3d9 PH |
1107 | |
1108 | /* If there is no output, do nothing. */ | |
1109 | ||
1110 | if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0) | |
1111 | { | |
1112 | transport_instance *tb = addr->transport; | |
1113 | ||
1114 | /* Handle logging options */ | |
1115 | ||
d6c82d7b JH |
1116 | if ( tb->log_output |
1117 | || result == FAIL && tb->log_fail_output | |
1118 | || result == DEFER && tb->log_defer_output | |
1119 | ) | |
059ec3d9 PH |
1120 | { |
1121 | uschar *s; | |
1122 | FILE *f = Ufopen(addr->return_filename, "rb"); | |
d6c82d7b | 1123 | if (!f) |
059ec3d9 PH |
1124 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output " |
1125 | "from %s transport: %s", addr->return_filename, tb->name, | |
1126 | strerror(errno)); | |
1127 | else | |
d6c82d7b | 1128 | if ((s = US Ufgets(big_buffer, big_buffer_size, f))) |
059ec3d9 PH |
1129 | { |
1130 | uschar *p = big_buffer + Ustrlen(big_buffer); | |
55414b25 | 1131 | const uschar * sp; |
059ec3d9 PH |
1132 | while (p > big_buffer && isspace(p[-1])) p--; |
1133 | *p = 0; | |
55414b25 | 1134 | sp = string_printing(big_buffer); |
059ec3d9 | 1135 | log_write(0, LOG_MAIN, "<%s>: %s transport output: %s", |
55414b25 | 1136 | addr->address, tb->name, sp); |
059ec3d9 | 1137 | } |
f1e894f3 | 1138 | (void)fclose(f); |
059ec3d9 PH |
1139 | } |
1140 | ||
1141 | /* Handle returning options, but only if there is an address to return | |
1142 | the text to. */ | |
1143 | ||
d6c82d7b | 1144 | if (sender_address[0] != 0 || addr->prop.errors_address) |
059ec3d9 PH |
1145 | if (tb->return_output) |
1146 | { | |
1147 | addr->transport_return = result = FAIL; | |
d6c82d7b | 1148 | if (addr->basic_errno == 0 && !addr->message) |
059ec3d9 PH |
1149 | addr->message = US"return message generated"; |
1150 | return_output = TRUE; | |
1151 | } | |
1152 | else | |
1153 | if (tb->return_fail_output && result == FAIL) return_output = TRUE; | |
059ec3d9 PH |
1154 | } |
1155 | ||
1156 | /* Get rid of the file unless it might be returned, but close it in | |
1157 | all cases. */ | |
1158 | ||
1159 | if (!return_output) | |
1160 | { | |
1161 | Uunlink(addr->return_filename); | |
1162 | addr->return_filename = NULL; | |
1163 | addr->return_file = -1; | |
1164 | } | |
1165 | ||
f1e894f3 | 1166 | (void)close(addr->return_file); |
059ec3d9 PH |
1167 | } |
1168 | ||
9d1c15ef | 1169 | /* The success case happens only after delivery by a transport. */ |
059ec3d9 PH |
1170 | |
1171 | if (result == OK) | |
1172 | { | |
1173 | addr->next = addr_succeed; | |
1174 | addr_succeed = addr; | |
1175 | ||
1176 | /* Call address_done() to ensure that we don't deliver to this address again, | |
1177 | and write appropriate things to the message log. If it is a child address, we | |
1178 | call child_done() to scan the ancestors and mark them complete if this is the | |
1179 | last child to complete. */ | |
1180 | ||
1181 | address_done(addr, now); | |
1182 | DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address); | |
1183 | ||
d6c82d7b | 1184 | if (!addr->parent) |
059ec3d9 PH |
1185 | deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address, |
1186 | driver_name, driver_kind); | |
059ec3d9 PH |
1187 | else |
1188 | { | |
1189 | deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address, | |
1190 | addr->parent->address, driver_name, driver_kind); | |
1191 | child_done(addr, now); | |
1192 | } | |
1193 | ||
774ef2d7 | 1194 | /* Certificates for logging (via events) */ |
a7538db1 | 1195 | #ifdef SUPPORT_TLS |
9d1c15ef JH |
1196 | tls_out.ourcert = addr->ourcert; |
1197 | addr->ourcert = NULL; | |
1198 | tls_out.peercert = addr->peercert; | |
1199 | addr->peercert = NULL; | |
018058b2 | 1200 | |
018058b2 JH |
1201 | tls_out.cipher = addr->cipher; |
1202 | tls_out.peerdn = addr->peerdn; | |
1203 | tls_out.ocsp = addr->ocsp; | |
83b27293 JH |
1204 | # ifdef EXPERIMENTAL_DANE |
1205 | tls_out.dane_verified = testflag(addr, af_dane_verified); | |
1206 | # endif | |
a7538db1 | 1207 | #endif |
9d1c15ef | 1208 | |
817d9f57 | 1209 | delivery_log(LOG_MAIN, addr, logchar, NULL); |
9d1c15ef | 1210 | |
a7538db1 | 1211 | #ifdef SUPPORT_TLS |
790fbb71 JH |
1212 | tls_free_cert(&tls_out.ourcert); |
1213 | tls_free_cert(&tls_out.peercert); | |
018058b2 JH |
1214 | tls_out.cipher = NULL; |
1215 | tls_out.peerdn = NULL; | |
1216 | tls_out.ocsp = OCSP_NOT_REQ; | |
83b27293 JH |
1217 | # ifdef EXPERIMENTAL_DANE |
1218 | tls_out.dane_verified = FALSE; | |
1219 | # endif | |
a7538db1 | 1220 | #endif |
059ec3d9 PH |
1221 | } |
1222 | ||
1223 | ||
1224 | /* Soft failure, or local delivery process failed; freezing may be | |
1225 | requested. */ | |
1226 | ||
1227 | else if (result == DEFER || result == PANIC) | |
1228 | { | |
1229 | if (result == PANIC) logflags |= LOG_PANIC; | |
1230 | ||
1231 | /* This puts them on the chain in reverse order. Do not change this, because | |
1232 | the code for handling retries assumes that the one with the retry | |
1233 | information is last. */ | |
1234 | ||
1235 | addr->next = addr_defer; | |
1236 | addr_defer = addr; | |
1237 | ||
1238 | /* The only currently implemented special action is to freeze the | |
1239 | message. Logging of this is done later, just before the -H file is | |
1240 | updated. */ | |
1241 | ||
1242 | if (addr->special_action == SPECIAL_FREEZE) | |
1243 | { | |
1244 | deliver_freeze = TRUE; | |
1245 | deliver_frozen_at = time(NULL); | |
1246 | update_spool = TRUE; | |
1247 | } | |
1248 | ||
1249 | /* If doing a 2-stage queue run, we skip writing to either the message | |
1250 | log or the main log for SMTP defers. */ | |
1251 | ||
1252 | if (!queue_2stage || addr->basic_errno != 0) | |
1253 | { | |
1254 | uschar ss[32]; | |
1255 | ||
1256 | /* For errors of the type "retry time not reached" (also remotes skipped | |
1257 | on queue run), logging is controlled by L_retry_defer. Note that this kind | |
1258 | of error number is negative, and all the retry ones are less than any | |
1259 | others. */ | |
1260 | ||
d6c82d7b JH |
1261 | unsigned int use_log_selector = addr->basic_errno <= ERRNO_RETRY_BASE |
1262 | ? L_retry_defer : 0; | |
059ec3d9 PH |
1263 | |
1264 | /* Build up the line that is used for both the message log and the main | |
1265 | log. */ | |
1266 | ||
1267 | s = reset_point = store_get(size); | |
e4bdf652 JH |
1268 | |
1269 | /* Create the address string for logging. Must not do this earlier, because | |
1270 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1271 | ||
6c6d6e48 | 1272 | log_address = string_log_address(addr, LOGGING(all_parents), result == OK); |
e4bdf652 | 1273 | |
c2f669a4 | 1274 | s = string_cat(s, &size, &ptr, log_address); |
059ec3d9 | 1275 | |
afa6d3ad JH |
1276 | if (*queue_name) |
1277 | s = string_append(s, &size, &ptr, 2, US" Q=", queue_name); | |
1278 | ||
059ec3d9 PH |
1279 | /* Either driver_name contains something and driver_kind contains |
1280 | " router" or " transport" (note the leading space), or driver_name is | |
1281 | a null string and driver_kind contains "routing" without the leading | |
1282 | space, if all routing has been deferred. When a domain has been held, | |
1283 | so nothing has been done at all, both variables contain null strings. */ | |
1284 | ||
d6c82d7b | 1285 | if (driver_name) |
059ec3d9 | 1286 | { |
d6c82d7b | 1287 | if (driver_kind[1] == 't' && addr->router) |
059ec3d9 PH |
1288 | s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name); |
1289 | Ustrcpy(ss, " ?="); | |
1290 | ss[1] = toupper(driver_kind[1]); | |
1291 | s = string_append(s, &size, &ptr, 2, ss, driver_name); | |
1292 | } | |
d6c82d7b JH |
1293 | else if (driver_kind) |
1294 | s = string_append(s, &size, &ptr, 2, US" ", driver_kind); | |
059ec3d9 PH |
1295 | |
1296 | sprintf(CS ss, " defer (%d)", addr->basic_errno); | |
c2f669a4 | 1297 | s = string_cat(s, &size, &ptr, ss); |
059ec3d9 PH |
1298 | |
1299 | if (addr->basic_errno > 0) | |
1300 | s = string_append(s, &size, &ptr, 2, US": ", | |
1301 | US strerror(addr->basic_errno)); | |
1302 | ||
c562fd30 | 1303 | if (addr->host_used) |
1a47b633 | 1304 | { |
c562fd30 JH |
1305 | s = string_append(s, &size, &ptr, 5, |
1306 | US" H=", addr->host_used->name, | |
1307 | US" [", addr->host_used->address, US"]"); | |
1a47b633 JH |
1308 | if (LOGGING(outgoing_port)) |
1309 | { | |
1310 | int port = addr->host_used->port; | |
1311 | s = string_append(s, &size, &ptr, 2, | |
1312 | US":", port == PORT_NONE ? US"25" : string_sprintf("%d", port)); | |
1313 | } | |
1314 | } | |
c562fd30 | 1315 | |
d6c82d7b | 1316 | if (addr->message) |
059ec3d9 PH |
1317 | s = string_append(s, &size, &ptr, 2, US": ", addr->message); |
1318 | ||
1319 | s[ptr] = 0; | |
1320 | ||
1321 | /* Log the deferment in the message log, but don't clutter it | |
1322 | up with retry-time defers after the first delivery attempt. */ | |
1323 | ||
1324 | if (deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE) | |
1325 | deliver_msglog("%s %s\n", now, s); | |
1326 | ||
1327 | /* Write the main log and reset the store */ | |
1328 | ||
1329 | log_write(use_log_selector, logflags, "== %s", s); | |
1330 | store_reset(reset_point); | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | ||
1335 | /* Hard failure. If there is an address to which an error message can be sent, | |
1336 | put this address on the failed list. If not, put it on the deferred list and | |
1337 | freeze the mail message for human attention. The latter action can also be | |
1338 | explicitly requested by a router or transport. */ | |
1339 | ||
1340 | else | |
1341 | { | |
1342 | /* If this is a delivery error, or a message for which no replies are | |
1343 | wanted, and the message's age is greater than ignore_bounce_errors_after, | |
1344 | force the af_ignore_error flag. This will cause the address to be discarded | |
1345 | later (with a log entry). */ | |
1346 | ||
1347 | if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after) | |
1348 | setflag(addr, af_ignore_error); | |
1349 | ||
1350 | /* Freeze the message if requested, or if this is a bounce message (or other | |
652e1b65 PH |
1351 | message with null sender) and this address does not have its own errors |
1352 | address. However, don't freeze if errors are being ignored. The actual code | |
1353 | to ignore occurs later, instead of sending a message. Logging of freezing | |
1354 | occurs later, just before writing the -H file. */ | |
059ec3d9 | 1355 | |
d6c82d7b JH |
1356 | if ( !testflag(addr, af_ignore_error) |
1357 | && ( addr->special_action == SPECIAL_FREEZE | |
1358 | || (sender_address[0] == 0 && !addr->prop.errors_address) | |
1359 | ) ) | |
059ec3d9 | 1360 | { |
d6c82d7b JH |
1361 | frozen_info = addr->special_action == SPECIAL_FREEZE |
1362 | ? US"" | |
1363 | : sender_local && !local_error_message | |
1364 | ? US" (message created with -f <>)" | |
1365 | : US" (delivery error message)"; | |
059ec3d9 PH |
1366 | deliver_freeze = TRUE; |
1367 | deliver_frozen_at = time(NULL); | |
1368 | update_spool = TRUE; | |
1369 | ||
1370 | /* The address is put on the defer rather than the failed queue, because | |
1371 | the message is being retained. */ | |
1372 | ||
1373 | addr->next = addr_defer; | |
1374 | addr_defer = addr; | |
1375 | } | |
1376 | ||
1377 | /* Don't put the address on the nonrecipients tree yet; wait until an | |
1378 | error message has been successfully sent. */ | |
1379 | ||
1380 | else | |
1381 | { | |
1382 | addr->next = addr_failed; | |
1383 | addr_failed = addr; | |
1384 | } | |
1385 | ||
1386 | /* Build up the log line for the message and main logs */ | |
1387 | ||
1388 | s = reset_point = store_get(size); | |
e4bdf652 JH |
1389 | |
1390 | /* Create the address string for logging. Must not do this earlier, because | |
1391 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1392 | ||
6c6d6e48 | 1393 | log_address = string_log_address(addr, LOGGING(all_parents), result == OK); |
e4bdf652 | 1394 | |
c2f669a4 | 1395 | s = string_cat(s, &size, &ptr, log_address); |
059ec3d9 | 1396 | |
6c6d6e48 | 1397 | if (LOGGING(sender_on_delivery)) |
059ec3d9 PH |
1398 | s = string_append(s, &size, &ptr, 3, US" F=<", sender_address, US">"); |
1399 | ||
afa6d3ad JH |
1400 | if (*queue_name) |
1401 | s = string_append(s, &size, &ptr, 2, US" Q=", queue_name); | |
1402 | ||
059ec3d9 PH |
1403 | /* Return path may not be set if no delivery actually happened */ |
1404 | ||
d6c82d7b | 1405 | if (used_return_path && LOGGING(return_path_on_delivery)) |
059ec3d9 | 1406 | s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">"); |
059ec3d9 | 1407 | |
d6c82d7b | 1408 | if (addr->router) |
059ec3d9 | 1409 | s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name); |
d6c82d7b | 1410 | if (addr->transport) |
059ec3d9 PH |
1411 | s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name); |
1412 | ||
d6c82d7b | 1413 | if (addr->host_used) |
67d81c10 JH |
1414 | s = d_hostlog(s, &size, &ptr, addr); |
1415 | ||
a7538db1 | 1416 | #ifdef SUPPORT_TLS |
67d81c10 | 1417 | s = d_tlslog(s, &size, &ptr, addr); |
a7538db1 | 1418 | #endif |
059ec3d9 PH |
1419 | |
1420 | if (addr->basic_errno > 0) | |
1421 | s = string_append(s, &size, &ptr, 2, US": ", | |
1422 | US strerror(addr->basic_errno)); | |
1423 | ||
d6c82d7b | 1424 | if (addr->message) |
059ec3d9 PH |
1425 | s = string_append(s, &size, &ptr, 2, US": ", addr->message); |
1426 | ||
1427 | s[ptr] = 0; | |
1428 | ||
1429 | /* Do the logging. For the message log, "routing failed" for those cases, | |
1430 | just to make it clearer. */ | |
1431 | ||
d6c82d7b | 1432 | if (driver_name) |
059ec3d9 | 1433 | deliver_msglog("%s %s\n", now, s); |
d6c82d7b JH |
1434 | else |
1435 | deliver_msglog("%s %s failed for %s\n", now, driver_kind, s); | |
059ec3d9 PH |
1436 | |
1437 | log_write(0, LOG_MAIN, "** %s", s); | |
14a465c3 | 1438 | |
0cbf2b82 | 1439 | #ifndef DISABLE_EVENT |
774ef2d7 | 1440 | msg_event_raise(US"msg:fail:delivery", addr); |
14a465c3 JH |
1441 | #endif |
1442 | ||
059ec3d9 PH |
1443 | store_reset(reset_point); |
1444 | } | |
1445 | ||
1446 | /* Ensure logging is turned on again in all cases */ | |
1447 | ||
1448 | disable_logging = FALSE; | |
1449 | } | |
1450 | ||
1451 | ||
1452 | ||
1453 | ||
1454 | /************************************************* | |
1455 | * Address-independent error * | |
1456 | *************************************************/ | |
1457 | ||
1458 | /* This function is called when there's an error that is not dependent on a | |
1459 | particular address, such as an expansion string failure. It puts the error into | |
1460 | all the addresses in a batch, logs the incident on the main and panic logs, and | |
1461 | clears the expansions. It is mostly called from local_deliver(), but can be | |
1462 | called for a remote delivery via findugid(). | |
1463 | ||
1464 | Arguments: | |
1465 | logit TRUE if (MAIN+PANIC) logging required | |
1466 | addr the first of the chain of addresses | |
1467 | code the error code | |
1468 | format format string for error message, or NULL if already set in addr | |
1469 | ... arguments for the format | |
1470 | ||
1471 | Returns: nothing | |
1472 | */ | |
1473 | ||
1474 | static void | |
1475 | common_error(BOOL logit, address_item *addr, int code, uschar *format, ...) | |
1476 | { | |
1477 | address_item *addr2; | |
1478 | addr->basic_errno = code; | |
1479 | ||
d6c82d7b | 1480 | if (format) |
059ec3d9 PH |
1481 | { |
1482 | va_list ap; | |
1483 | uschar buffer[512]; | |
1484 | va_start(ap, format); | |
1485 | if (!string_vformat(buffer, sizeof(buffer), CS format, ap)) | |
1486 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
81f91683 | 1487 | "common_error expansion was longer than " SIZE_T_FMT, sizeof(buffer)); |
059ec3d9 PH |
1488 | va_end(ap); |
1489 | addr->message = string_copy(buffer); | |
1490 | } | |
1491 | ||
d6c82d7b | 1492 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 PH |
1493 | { |
1494 | addr2->basic_errno = code; | |
1495 | addr2->message = addr->message; | |
1496 | } | |
1497 | ||
1498 | if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message); | |
1499 | deliver_set_expansions(NULL); | |
1500 | } | |
1501 | ||
1502 | ||
1503 | ||
1504 | ||
1505 | /************************************************* | |
1506 | * Check a "never users" list * | |
1507 | *************************************************/ | |
1508 | ||
1509 | /* This function is called to check whether a uid is on one of the two "never | |
1510 | users" lists. | |
1511 | ||
1512 | Arguments: | |
1513 | uid the uid to be checked | |
1514 | nusers the list to be scanned; the first item in the list is the count | |
1515 | ||
1516 | Returns: TRUE if the uid is on the list | |
1517 | */ | |
1518 | ||
1519 | static BOOL | |
1520 | check_never_users(uid_t uid, uid_t *nusers) | |
1521 | { | |
1522 | int i; | |
d6c82d7b | 1523 | if (!nusers) return FALSE; |
059ec3d9 PH |
1524 | for (i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE; |
1525 | return FALSE; | |
1526 | } | |
1527 | ||
1528 | ||
1529 | ||
1530 | /************************************************* | |
1531 | * Find uid and gid for a transport * | |
1532 | *************************************************/ | |
1533 | ||
1534 | /* This function is called for both local and remote deliveries, to find the | |
1535 | uid/gid under which to run the delivery. The values are taken preferentially | |
1536 | from the transport (either explicit or deliver_as_creator), then from the | |
1537 | address (i.e. the router), and if nothing is set, the exim uid/gid are used. If | |
1538 | the resulting uid is on the "never_users" or the "fixed_never_users" list, a | |
1539 | panic error is logged, and the function fails (which normally leads to delivery | |
1540 | deferral). | |
1541 | ||
1542 | Arguments: | |
1543 | addr the address (possibly a chain) | |
1544 | tp the transport | |
1545 | uidp pointer to uid field | |
1546 | gidp pointer to gid field | |
1547 | igfp pointer to the use_initgroups field | |
1548 | ||
1549 | Returns: FALSE if failed - error has been set in address(es) | |
1550 | */ | |
1551 | ||
1552 | static BOOL | |
1553 | findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp, | |
1554 | BOOL *igfp) | |
1555 | { | |
d6c82d7b | 1556 | uschar *nuname; |
059ec3d9 PH |
1557 | BOOL gid_set = FALSE; |
1558 | ||
1559 | /* Default initgroups flag comes from the transport */ | |
1560 | ||
1561 | *igfp = tp->initgroups; | |
1562 | ||
1563 | /* First see if there's a gid on the transport, either fixed or expandable. | |
1564 | The expanding function always logs failure itself. */ | |
1565 | ||
1566 | if (tp->gid_set) | |
1567 | { | |
1568 | *gidp = tp->gid; | |
1569 | gid_set = TRUE; | |
1570 | } | |
d6c82d7b | 1571 | else if (tp->expand_gid) |
059ec3d9 | 1572 | { |
d6c82d7b JH |
1573 | if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp, |
1574 | &(addr->message))) | |
059ec3d9 PH |
1575 | { |
1576 | common_error(FALSE, addr, ERRNO_GIDFAIL, NULL); | |
1577 | return FALSE; | |
1578 | } | |
d6c82d7b | 1579 | gid_set = TRUE; |
059ec3d9 PH |
1580 | } |
1581 | ||
911f6fde PH |
1582 | /* If the transport did not set a group, see if the router did. */ |
1583 | ||
1584 | if (!gid_set && testflag(addr, af_gid_set)) | |
1585 | { | |
1586 | *gidp = addr->gid; | |
1587 | gid_set = TRUE; | |
1588 | } | |
1589 | ||
059ec3d9 PH |
1590 | /* Pick up a uid from the transport if one is set. */ |
1591 | ||
1592 | if (tp->uid_set) *uidp = tp->uid; | |
1593 | ||
1594 | /* Otherwise, try for an expandable uid field. If it ends up as a numeric id, | |
1595 | it does not provide a passwd value from which a gid can be taken. */ | |
1596 | ||
d6c82d7b | 1597 | else if (tp->expand_uid) |
059ec3d9 PH |
1598 | { |
1599 | struct passwd *pw; | |
1600 | if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw, | |
1601 | uidp, &(addr->message))) | |
1602 | { | |
1603 | common_error(FALSE, addr, ERRNO_UIDFAIL, NULL); | |
1604 | return FALSE; | |
1605 | } | |
d6c82d7b | 1606 | if (!gid_set && pw) |
059ec3d9 PH |
1607 | { |
1608 | *gidp = pw->pw_gid; | |
1609 | gid_set = TRUE; | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | /* If the transport doesn't set the uid, test the deliver_as_creator flag. */ | |
1614 | ||
1615 | else if (tp->deliver_as_creator) | |
1616 | { | |
1617 | *uidp = originator_uid; | |
1618 | if (!gid_set) | |
1619 | { | |
1620 | *gidp = originator_gid; | |
1621 | gid_set = TRUE; | |
1622 | } | |
1623 | } | |
1624 | ||
911f6fde PH |
1625 | /* Otherwise see if the address specifies the uid and if so, take it and its |
1626 | initgroups flag. */ | |
059ec3d9 PH |
1627 | |
1628 | else if (testflag(addr, af_uid_set)) | |
1629 | { | |
1630 | *uidp = addr->uid; | |
1631 | *igfp = testflag(addr, af_initgroups); | |
059ec3d9 PH |
1632 | } |
1633 | ||
1634 | /* Nothing has specified the uid - default to the Exim user, and group if the | |
1635 | gid is not set. */ | |
1636 | ||
1637 | else | |
1638 | { | |
1639 | *uidp = exim_uid; | |
1640 | if (!gid_set) | |
1641 | { | |
1642 | *gidp = exim_gid; | |
1643 | gid_set = TRUE; | |
1644 | } | |
1645 | } | |
1646 | ||
911f6fde PH |
1647 | /* If no gid is set, it is a disaster. We default to the Exim gid only if |
1648 | defaulting to the Exim uid. In other words, if the configuration has specified | |
1649 | a uid, it must also provide a gid. */ | |
059ec3d9 PH |
1650 | |
1651 | if (!gid_set) | |
1652 | { | |
1653 | common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for " | |
1654 | "%s transport", tp->name); | |
1655 | return FALSE; | |
1656 | } | |
1657 | ||
1658 | /* Check that the uid is not on the lists of banned uids that may not be used | |
1659 | for delivery processes. */ | |
1660 | ||
d6c82d7b JH |
1661 | nuname = check_never_users(*uidp, never_users) |
1662 | ? US"never_users" | |
1663 | : check_never_users(*uidp, fixed_never_users) | |
1664 | ? US"fixed_never_users" | |
1665 | : NULL; | |
1666 | if (nuname) | |
059ec3d9 PH |
1667 | { |
1668 | common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport " | |
1669 | "is on the %s list", (long int)(*uidp), tp->name, nuname); | |
1670 | return FALSE; | |
1671 | } | |
1672 | ||
1673 | /* All is well */ | |
1674 | ||
1675 | return TRUE; | |
1676 | } | |
1677 | ||
1678 | ||
1679 | ||
1680 | ||
1681 | /************************************************* | |
1682 | * Check the size of a message for a transport * | |
1683 | *************************************************/ | |
1684 | ||
1685 | /* Checks that the message isn't too big for the selected transport. | |
1686 | This is called only when it is known that the limit is set. | |
1687 | ||
1688 | Arguments: | |
1689 | tp the transport | |
1690 | addr the (first) address being delivered | |
1691 | ||
1692 | Returns: OK | |
1693 | DEFER expansion failed or did not yield an integer | |
1694 | FAIL message too big | |
1695 | */ | |
1696 | ||
1697 | int | |
1698 | check_message_size(transport_instance *tp, address_item *addr) | |
1699 | { | |
1700 | int rc = OK; | |
1701 | int size_limit; | |
1702 | ||
1703 | deliver_set_expansions(addr); | |
d45b1de8 | 1704 | size_limit = expand_string_integer(tp->message_size_limit, TRUE); |
059ec3d9 PH |
1705 | deliver_set_expansions(NULL); |
1706 | ||
d6c82d7b | 1707 | if (expand_string_message) |
059ec3d9 PH |
1708 | { |
1709 | rc = DEFER; | |
d6c82d7b JH |
1710 | addr->message = size_limit == -1 |
1711 | ? string_sprintf("failed to expand message_size_limit " | |
1712 | "in %s transport: %s", tp->name, expand_string_message) | |
1713 | : string_sprintf("invalid message_size_limit " | |
059ec3d9 PH |
1714 | "in %s transport: %s", tp->name, expand_string_message); |
1715 | } | |
1716 | else if (size_limit > 0 && message_size > size_limit) | |
1717 | { | |
1718 | rc = FAIL; | |
1719 | addr->message = | |
1720 | string_sprintf("message is too big (transport limit = %d)", | |
1721 | size_limit); | |
1722 | } | |
1723 | ||
1724 | return rc; | |
1725 | } | |
1726 | ||
1727 | ||
1728 | ||
1729 | /************************************************* | |
1730 | * Transport-time check for a previous delivery * | |
1731 | *************************************************/ | |
1732 | ||
1733 | /* Check that this base address hasn't previously been delivered to its routed | |
c2c19e9d PH |
1734 | transport. If it has been delivered, mark it done. The check is necessary at |
1735 | delivery time in order to handle homonymic addresses correctly in cases where | |
1736 | the pattern of redirection changes between delivery attempts (so the unique | |
1737 | fields change). Non-homonymic previous delivery is detected earlier, at routing | |
1738 | time (which saves unnecessary routing). | |
1739 | ||
1740 | Arguments: | |
1741 | addr the address item | |
1742 | testing TRUE if testing wanted only, without side effects | |
059ec3d9 | 1743 | |
059ec3d9 PH |
1744 | Returns: TRUE if previously delivered by the transport |
1745 | */ | |
1746 | ||
1747 | static BOOL | |
c2c19e9d | 1748 | previously_transported(address_item *addr, BOOL testing) |
059ec3d9 PH |
1749 | { |
1750 | (void)string_format(big_buffer, big_buffer_size, "%s/%s", | |
1751 | addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name); | |
1752 | ||
1753 | if (tree_search(tree_nonrecipients, big_buffer) != 0) | |
1754 | { | |
1755 | DEBUG(D_deliver|D_route|D_transport) | |
1756 | debug_printf("%s was previously delivered (%s transport): discarded\n", | |
1757 | addr->address, addr->transport->name); | |
c2c19e9d | 1758 | if (!testing) child_done(addr, tod_stamp(tod_log)); |
059ec3d9 PH |
1759 | return TRUE; |
1760 | } | |
1761 | ||
1762 | return FALSE; | |
1763 | } | |
1764 | ||
1765 | ||
1766 | ||
064a94c9 PH |
1767 | /****************************************************** |
1768 | * Check for a given header in a header string * | |
1769 | ******************************************************/ | |
1770 | ||
1771 | /* This function is used when generating quota warnings. The configuration may | |
1772 | specify any header lines it likes in quota_warn_message. If certain of them are | |
1773 | missing, defaults are inserted, so we need to be able to test for the presence | |
1774 | of a given header. | |
1775 | ||
1776 | Arguments: | |
1777 | hdr the required header name | |
1778 | hstring the header string | |
1779 | ||
1780 | Returns: TRUE the header is in the string | |
1781 | FALSE the header is not in the string | |
1782 | */ | |
1783 | ||
1784 | static BOOL | |
1785 | contains_header(uschar *hdr, uschar *hstring) | |
1786 | { | |
1787 | int len = Ustrlen(hdr); | |
1788 | uschar *p = hstring; | |
1789 | while (*p != 0) | |
1790 | { | |
1791 | if (strncmpic(p, hdr, len) == 0) | |
1792 | { | |
1793 | p += len; | |
1794 | while (*p == ' ' || *p == '\t') p++; | |
1795 | if (*p == ':') return TRUE; | |
1796 | } | |
1797 | while (*p != 0 && *p != '\n') p++; | |
1798 | if (*p == '\n') p++; | |
1799 | } | |
1800 | return FALSE; | |
1801 | } | |
1802 | ||
1803 | ||
1804 | ||
059ec3d9 PH |
1805 | |
1806 | /************************************************* | |
1807 | * Perform a local delivery * | |
1808 | *************************************************/ | |
1809 | ||
1810 | /* Each local delivery is performed in a separate process which sets its | |
1811 | uid and gid as specified. This is a safer way than simply changing and | |
1812 | restoring using seteuid(); there is a body of opinion that seteuid() cannot be | |
1813 | used safely. From release 4, Exim no longer makes any use of it. Besides, not | |
1814 | all systems have seteuid(). | |
1815 | ||
1816 | If the uid/gid are specified in the transport_instance, they are used; the | |
1817 | transport initialization must ensure that either both or neither are set. | |
1818 | Otherwise, the values associated with the address are used. If neither are set, | |
1819 | it is a configuration error. | |
1820 | ||
1821 | The transport or the address may specify a home directory (transport over- | |
1822 | rides), and if they do, this is set as $home. If neither have set a working | |
1823 | directory, this value is used for that as well. Otherwise $home is left unset | |
1824 | and the cwd is set to "/" - a directory that should be accessible to all users. | |
1825 | ||
1826 | Using a separate process makes it more complicated to get error information | |
1827 | back. We use a pipe to pass the return code and also an error code and error | |
1828 | text string back to the parent process. | |
1829 | ||
1830 | Arguments: | |
1831 | addr points to an address block for this delivery; for "normal" local | |
1832 | deliveries this is the only address to be delivered, but for | |
1833 | pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe) | |
1834 | a number of addresses can be handled simultaneously, and in this | |
1835 | case addr will point to a chain of addresses with the same | |
1836 | characteristics. | |
1837 | ||
1838 | shadowing TRUE if running a shadow transport; this causes output from pipes | |
1839 | to be ignored. | |
1840 | ||
1841 | Returns: nothing | |
1842 | */ | |
1843 | ||
1844 | static void | |
1845 | deliver_local(address_item *addr, BOOL shadowing) | |
1846 | { | |
1847 | BOOL use_initgroups; | |
1848 | uid_t uid; | |
1849 | gid_t gid; | |
1850 | int status, len, rc; | |
1851 | int pfd[2]; | |
1852 | pid_t pid; | |
1853 | uschar *working_directory; | |
1854 | address_item *addr2; | |
1855 | transport_instance *tp = addr->transport; | |
1856 | ||
1857 | /* Set up the return path from the errors or sender address. If the transport | |
1858 | has its own return path setting, expand it and replace the existing value. */ | |
1859 | ||
d6c82d7b | 1860 | if(addr->prop.errors_address) |
d43cbe25 | 1861 | return_path = addr->prop.errors_address; |
384152a6 | 1862 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 1863 | else if (addr->prop.srs_sender) |
d43cbe25 | 1864 | return_path = addr->prop.srs_sender; |
384152a6 TK |
1865 | #endif |
1866 | else | |
1867 | return_path = sender_address; | |
059ec3d9 | 1868 | |
d6c82d7b | 1869 | if (tp->return_path) |
059ec3d9 PH |
1870 | { |
1871 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b | 1872 | if (!new_return_path) |
059ec3d9 PH |
1873 | { |
1874 | if (!expand_string_forcedfail) | |
1875 | { | |
1876 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, | |
1877 | US"Failed to expand return path \"%s\" in %s transport: %s", | |
1878 | tp->return_path, tp->name, expand_string_message); | |
1879 | return; | |
1880 | } | |
1881 | } | |
1882 | else return_path = new_return_path; | |
1883 | } | |
1884 | ||
1885 | /* For local deliveries, one at a time, the value used for logging can just be | |
1886 | set directly, once and for all. */ | |
1887 | ||
1888 | used_return_path = return_path; | |
1889 | ||
1890 | /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message | |
1891 | gets put into the address(es), and the expansions are unset, so we can just | |
1892 | return. */ | |
1893 | ||
1894 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return; | |
1895 | ||
5418e93b PH |
1896 | /* See if either the transport or the address specifies a home directory. A |
1897 | home directory set in the address may already be expanded; a flag is set to | |
1898 | indicate that. In other cases we must expand it. */ | |
059ec3d9 | 1899 | |
d6c82d7b JH |
1900 | if ( (deliver_home = tp->home_dir) /* Set in transport, or */ |
1901 | || ( (deliver_home = addr->home_dir) /* Set in address and */ | |
1902 | && !testflag(addr, af_home_expanded) /* not expanded */ | |
1903 | ) ) | |
059ec3d9 PH |
1904 | { |
1905 | uschar *rawhome = deliver_home; | |
1906 | deliver_home = NULL; /* in case it contains $home */ | |
d6c82d7b | 1907 | if (!(deliver_home = expand_string(rawhome))) |
059ec3d9 PH |
1908 | { |
1909 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed " | |
1910 | "to expand for %s transport: %s", rawhome, tp->name, | |
1911 | expand_string_message); | |
1912 | return; | |
1913 | } | |
1914 | if (*deliver_home != '/') | |
1915 | { | |
1916 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" " | |
1917 | "is not absolute for %s transport", deliver_home, tp->name); | |
1918 | return; | |
1919 | } | |
1920 | } | |
1921 | ||
5418e93b PH |
1922 | /* See if either the transport or the address specifies a current directory, |
1923 | and if so, expand it. If nothing is set, use the home directory, unless it is | |
1924 | also unset in which case use "/", which is assumed to be a directory to which | |
1925 | all users have access. It is necessary to be in a visible directory for some | |
1926 | operating systems when running pipes, as some commands (e.g. "rm" under Solaris | |
1927 | 2.5) require this. */ | |
1928 | ||
d6c82d7b JH |
1929 | working_directory = tp->current_dir ? tp->current_dir : addr->current_dir; |
1930 | if (working_directory) | |
059ec3d9 PH |
1931 | { |
1932 | uschar *raw = working_directory; | |
d6c82d7b | 1933 | if (!(working_directory = expand_string(raw))) |
059ec3d9 PH |
1934 | { |
1935 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" " | |
1936 | "failed to expand for %s transport: %s", raw, tp->name, | |
1937 | expand_string_message); | |
1938 | return; | |
1939 | } | |
1940 | if (*working_directory != '/') | |
1941 | { | |
1942 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path " | |
1943 | "\"%s\" is not absolute for %s transport", working_directory, tp->name); | |
1944 | return; | |
1945 | } | |
1946 | } | |
d6c82d7b | 1947 | else working_directory = deliver_home ? deliver_home : US"/"; |
059ec3d9 PH |
1948 | |
1949 | /* If one of the return_output flags is set on the transport, create and open a | |
1950 | file in the message log directory for the transport to write its output onto. | |
1951 | This is mainly used by pipe transports. The file needs to be unique to the | |
1952 | address. This feature is not available for shadow transports. */ | |
1953 | ||
d6c82d7b JH |
1954 | if ( !shadowing |
1955 | && ( tp->return_output || tp->return_fail_output | |
ec0eb1a3 | 1956 | || tp->log_output || tp->log_fail_output || tp->log_defer_output |
d6c82d7b | 1957 | ) ) |
059ec3d9 | 1958 | { |
41313d92 JH |
1959 | uschar * error; |
1960 | ||
059ec3d9 | 1961 | addr->return_filename = |
41313d92 JH |
1962 | spool_fname(US"msglog", message_subdir, message_id, |
1963 | string_sprintf("-%d-%d", getpid(), return_count++)); | |
1964 | ||
1965 | if ((addr->return_file = open_msglog_file(addr->return_filename, 0400, &error)) < 0) | |
059ec3d9 PH |
1966 | { |
1967 | common_error(TRUE, addr, errno, US"Unable to %s file for %s transport " | |
1968 | "to return message: %s", error, tp->name, strerror(errno)); | |
1969 | return; | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | /* Create the pipe for inter-process communication. */ | |
1974 | ||
1975 | if (pipe(pfd) != 0) | |
1976 | { | |
1977 | common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s", | |
1978 | strerror(errno)); | |
1979 | return; | |
1980 | } | |
1981 | ||
1982 | /* Now fork the process to do the real work in the subprocess, but first | |
1983 | ensure that all cached resources are freed so that the subprocess starts with | |
1984 | a clean slate and doesn't interfere with the parent process. */ | |
1985 | ||
1986 | search_tidyup(); | |
1987 | ||
1988 | if ((pid = fork()) == 0) | |
1989 | { | |
1990 | BOOL replicate = TRUE; | |
1991 | ||
1992 | /* Prevent core dumps, as we don't want them in users' home directories. | |
1993 | HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that | |
1994 | system. Some experimental/developing systems (e.g. GNU/Hurd) may define | |
1995 | RLIMIT_CORE but not support it in setrlimit(). For such systems, do not | |
a29e5231 PP |
1996 | complain if the error is "not supported". |
1997 | ||
1998 | There are two scenarios where changing the max limit has an effect. In one, | |
1999 | the user is using a .forward and invoking a command of their choice via pipe; | |
2000 | for these, we do need the max limit to be 0 unless the admin chooses to | |
2001 | permit an increased limit. In the other, the command is invoked directly by | |
2002 | the transport and is under administrator control, thus being able to raise | |
2003 | the limit aids in debugging. So there's no general always-right answer. | |
2004 | ||
2005 | Thus we inhibit core-dumps completely but let individual transports, while | |
2006 | still root, re-raise the limits back up to aid debugging. We make the | |
2007 | default be no core-dumps -- few enough people can use core dumps in | |
2008 | diagnosis that it's reasonable to make them something that has to be explicitly requested. | |
2009 | */ | |
059ec3d9 | 2010 | |
a7538db1 | 2011 | #ifdef RLIMIT_CORE |
059ec3d9 PH |
2012 | struct rlimit rl; |
2013 | rl.rlim_cur = 0; | |
2014 | rl.rlim_max = 0; | |
2015 | if (setrlimit(RLIMIT_CORE, &rl) < 0) | |
2016 | { | |
a7538db1 | 2017 | # ifdef SETRLIMIT_NOT_SUPPORTED |
059ec3d9 | 2018 | if (errno != ENOSYS && errno != ENOTSUP) |
a7538db1 | 2019 | # endif |
059ec3d9 PH |
2020 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s", |
2021 | strerror(errno)); | |
2022 | } | |
a7538db1 | 2023 | #endif |
059ec3d9 PH |
2024 | |
2025 | /* Reset the random number generator, so different processes don't all | |
2026 | have the same sequence. */ | |
2027 | ||
2028 | random_seed = 0; | |
2029 | ||
2030 | /* If the transport has a setup entry, call this first, while still | |
2031 | privileged. (Appendfile uses this to expand quota, for example, while | |
2032 | able to read private files.) */ | |
2033 | ||
d6c82d7b | 2034 | if (addr->transport->setup) |
929ba01c | 2035 | switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid, |
059ec3d9 PH |
2036 | &(addr->message))) |
2037 | { | |
2038 | case DEFER: | |
d6c82d7b JH |
2039 | addr->transport_return = DEFER; |
2040 | goto PASS_BACK; | |
059ec3d9 PH |
2041 | |
2042 | case FAIL: | |
d6c82d7b JH |
2043 | addr->transport_return = PANIC; |
2044 | goto PASS_BACK; | |
059ec3d9 | 2045 | } |
059ec3d9 PH |
2046 | |
2047 | /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as | |
2048 | when the process becomes unprivileged, it won't be able to write to the | |
2049 | process log. SIGHUP is ignored throughout exim, except when it is being | |
2050 | run as a daemon. */ | |
2051 | ||
2052 | signal(SIGINT, SIG_IGN); | |
2053 | signal(SIGTERM, SIG_IGN); | |
2054 | signal(SIGUSR1, SIG_IGN); | |
2055 | ||
2056 | /* Close the unwanted half of the pipe, and set close-on-exec for the other | |
2057 | half - for transports that exec things (e.g. pipe). Then set the required | |
2058 | gid/uid. */ | |
2059 | ||
f1e894f3 | 2060 | (void)close(pfd[pipe_read]); |
ff790e47 | 2061 | (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) | |
059ec3d9 PH |
2062 | FD_CLOEXEC); |
2063 | exim_setugid(uid, gid, use_initgroups, | |
2064 | string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part, | |
2065 | addr->address, addr->transport->name)); | |
2066 | ||
2067 | DEBUG(D_deliver) | |
2068 | { | |
2069 | address_item *batched; | |
2070 | debug_printf(" home=%s current=%s\n", deliver_home, working_directory); | |
d6c82d7b | 2071 | for (batched = addr->next; batched; batched = batched->next) |
059ec3d9 PH |
2072 | debug_printf("additional batched address: %s\n", batched->address); |
2073 | } | |
2074 | ||
2075 | /* Set an appropriate working directory. */ | |
2076 | ||
2077 | if (Uchdir(working_directory) < 0) | |
2078 | { | |
2079 | addr->transport_return = DEFER; | |
2080 | addr->basic_errno = errno; | |
2081 | addr->message = string_sprintf("failed to chdir to %s", working_directory); | |
2082 | } | |
2083 | ||
2084 | /* If successful, call the transport */ | |
2085 | ||
2086 | else | |
2087 | { | |
2088 | BOOL ok = TRUE; | |
2089 | set_process_info("delivering %s to %s using %s", message_id, | |
2090 | addr->local_part, addr->transport->name); | |
2091 | ||
2a47f028 JH |
2092 | /* Setting this global in the subprocess means we need never clear it */ |
2093 | transport_name = addr->transport->name; | |
2094 | ||
059ec3d9 PH |
2095 | /* If a transport filter has been specified, set up its argument list. |
2096 | Any errors will get put into the address, and FALSE yielded. */ | |
2097 | ||
d6c82d7b | 2098 | if (addr->transport->filter_command) |
059ec3d9 PH |
2099 | { |
2100 | ok = transport_set_up_command(&transport_filter_argv, | |
2101 | addr->transport->filter_command, | |
2102 | TRUE, PANIC, addr, US"transport filter", NULL); | |
2103 | transport_filter_timeout = addr->transport->filter_timeout; | |
2104 | } | |
2105 | else transport_filter_argv = NULL; | |
2106 | ||
2107 | if (ok) | |
2108 | { | |
2109 | debug_print_string(addr->transport->debug_string); | |
2110 | replicate = !(addr->transport->info->code)(addr->transport, addr); | |
2111 | } | |
2112 | } | |
2113 | ||
2114 | /* Pass the results back down the pipe. If necessary, first replicate the | |
2115 | status in the top address to the others in the batch. The label is the | |
2116 | subject of a goto when a call to the transport's setup function fails. We | |
2117 | pass the pointer to the transport back in case it got changed as a result of | |
2118 | file_format in appendfile. */ | |
2119 | ||
2120 | PASS_BACK: | |
2121 | ||
2122 | if (replicate) replicate_status(addr); | |
d6c82d7b | 2123 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 PH |
2124 | { |
2125 | int i; | |
2126 | int local_part_length = Ustrlen(addr2->local_part); | |
2127 | uschar *s; | |
1ac6b2e7 | 2128 | int ret; |
059ec3d9 | 2129 | |
d6c82d7b JH |
2130 | if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int) |
2131 | || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count) | |
2132 | || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags) | |
2133 | || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int) | |
2134 | || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int) | |
2135 | || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int) | |
2136 | || (ret = write(pfd[pipe_write], &addr2->transport, | |
1ac6b2e7 | 2137 | sizeof(transport_instance *))) != sizeof(transport_instance *) |
059ec3d9 PH |
2138 | |
2139 | /* For a file delivery, pass back the local part, in case the original | |
2140 | was only part of the final delivery path. This gives more complete | |
2141 | logging. */ | |
2142 | ||
1ac6b2e7 | 2143 | || (testflag(addr2, af_file) |
d6c82d7b | 2144 | && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int) |
1ac6b2e7 JH |
2145 | || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length |
2146 | ) | |
2147 | ) | |
2148 | ) | |
2149 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n", | |
2150 | ret == -1 ? strerror(errno) : "short write"); | |
059ec3d9 PH |
2151 | |
2152 | /* Now any messages */ | |
2153 | ||
2154 | for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message) | |
2155 | { | |
d6c82d7b JH |
2156 | int message_length = s ? Ustrlen(s) + 1 : 0; |
2157 | if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int) | |
2158 | || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length | |
1ac6b2e7 JH |
2159 | ) |
2160 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n", | |
2161 | ret == -1 ? strerror(errno) : "short write"); | |
059ec3d9 PH |
2162 | } |
2163 | } | |
2164 | ||
2165 | /* OK, this process is now done. Free any cached resources that it opened, | |
2166 | and close the pipe we were writing down before exiting. */ | |
2167 | ||
f1e894f3 | 2168 | (void)close(pfd[pipe_write]); |
059ec3d9 PH |
2169 | search_tidyup(); |
2170 | exit(EXIT_SUCCESS); | |
2171 | } | |
2172 | ||
2173 | /* Back in the main process: panic if the fork did not succeed. This seems | |
2174 | better than returning an error - if forking is failing it is probably best | |
2175 | not to try other deliveries for this message. */ | |
2176 | ||
2177 | if (pid < 0) | |
2178 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s", | |
2179 | addr->address); | |
2180 | ||
2181 | /* Read the pipe to get the delivery status codes and error messages. Our copy | |
2182 | of the writing end must be closed first, as otherwise read() won't return zero | |
2183 | on an empty pipe. We check that a status exists for each address before | |
2184 | overwriting the address structure. If data is missing, the default DEFER status | |
2185 | will remain. Afterwards, close the reading end. */ | |
2186 | ||
f1e894f3 | 2187 | (void)close(pfd[pipe_write]); |
059ec3d9 | 2188 | |
d6c82d7b | 2189 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 | 2190 | { |
d6c82d7b | 2191 | len = read(pfd[pipe_read], &status, sizeof(int)); |
059ec3d9 PH |
2192 | if (len > 0) |
2193 | { | |
2194 | int i; | |
2195 | uschar **sptr; | |
2196 | ||
2197 | addr2->transport_return = status; | |
d6c82d7b | 2198 | len = read(pfd[pipe_read], &transport_count, |
059ec3d9 | 2199 | sizeof(transport_count)); |
d6c82d7b JH |
2200 | len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags)); |
2201 | len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int)); | |
2202 | len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int)); | |
2203 | len = read(pfd[pipe_read], &addr2->special_action, sizeof(int)); | |
2204 | len = read(pfd[pipe_read], &addr2->transport, | |
059ec3d9 PH |
2205 | sizeof(transport_instance *)); |
2206 | ||
2207 | if (testflag(addr2, af_file)) | |
2208 | { | |
2209 | int local_part_length; | |
d6c82d7b JH |
2210 | len = read(pfd[pipe_read], &local_part_length, sizeof(int)); |
2211 | len = read(pfd[pipe_read], big_buffer, local_part_length); | |
059ec3d9 PH |
2212 | big_buffer[local_part_length] = 0; |
2213 | addr2->local_part = string_copy(big_buffer); | |
2214 | } | |
2215 | ||
d6c82d7b | 2216 | for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message) |
059ec3d9 PH |
2217 | { |
2218 | int message_length; | |
d6c82d7b | 2219 | len = read(pfd[pipe_read], &message_length, sizeof(int)); |
059ec3d9 PH |
2220 | if (message_length > 0) |
2221 | { | |
d6c82d7b | 2222 | len = read(pfd[pipe_read], big_buffer, message_length); |
dc8091e7 | 2223 | big_buffer[big_buffer_size-1] = '\0'; /* guard byte */ |
059ec3d9 PH |
2224 | if (len > 0) *sptr = string_copy(big_buffer); |
2225 | } | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | else | |
2230 | { | |
2231 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s " | |
2232 | "from delivery subprocess", addr2->unique); | |
2233 | break; | |
2234 | } | |
2235 | } | |
2236 | ||
f1e894f3 | 2237 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
2238 | |
2239 | /* Unless shadowing, write all successful addresses immediately to the journal | |
2240 | file, to ensure they are recorded asap. For homonymic addresses, use the base | |
2241 | address plus the transport name. Failure to write the journal is panic-worthy, | |
2242 | but don't stop, as it may prove possible subsequently to update the spool file | |
2243 | in order to record the delivery. */ | |
2244 | ||
2245 | if (!shadowing) | |
2246 | { | |
d6c82d7b JH |
2247 | for (addr2 = addr; addr2; addr2 = addr2->next) |
2248 | if (addr2->transport_return == OK) | |
2249 | { | |
2250 | if (testflag(addr2, af_homonym)) | |
2251 | sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name); | |
2252 | else | |
2253 | sprintf(CS big_buffer, "%.500s\n", addr2->unique); | |
059ec3d9 | 2254 | |
d6c82d7b JH |
2255 | /* In the test harness, wait just a bit to let the subprocess finish off |
2256 | any debug output etc first. */ | |
059ec3d9 | 2257 | |
d6c82d7b | 2258 | if (running_in_test_harness) millisleep(300); |
059ec3d9 | 2259 | |
d6c82d7b JH |
2260 | DEBUG(D_deliver) debug_printf("journalling %s", big_buffer); |
2261 | len = Ustrlen(big_buffer); | |
2262 | if (write(journal_fd, big_buffer, len) != len) | |
2263 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s", | |
2264 | big_buffer, strerror(errno)); | |
2265 | } | |
059ec3d9 PH |
2266 | |
2267 | /* Ensure the journal file is pushed out to disk. */ | |
2268 | ||
54fc8428 | 2269 | if (EXIMfsync(journal_fd) < 0) |
059ec3d9 PH |
2270 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s", |
2271 | strerror(errno)); | |
2272 | } | |
2273 | ||
2274 | /* Wait for the process to finish. If it terminates with a non-zero code, | |
2275 | freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the | |
2276 | status values of all the addresses as they are. Take care to handle the case | |
2277 | when the subprocess doesn't seem to exist. This has been seen on one system | |
2278 | when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that | |
2279 | happens, wait() doesn't recognize the termination of child processes. Exim now | |
2280 | resets SIGCHLD to SIG_DFL, but this code should still be robust. */ | |
2281 | ||
2282 | while ((rc = wait(&status)) != pid) | |
059ec3d9 PH |
2283 | if (rc < 0 && errno == ECHILD) /* Process has vanished */ |
2284 | { | |
2285 | log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly", | |
2286 | addr->transport->driver_name); | |
2287 | status = 0; | |
2288 | break; | |
2289 | } | |
059ec3d9 PH |
2290 | |
2291 | if ((status & 0xffff) != 0) | |
2292 | { | |
2293 | int msb = (status >> 8) & 255; | |
2294 | int lsb = status & 255; | |
2295 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
2296 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
2297 | addr->special_action = SPECIAL_FREEZE; | |
2298 | log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero " | |
2299 | "status 0x%04x: %s %d", | |
2300 | addr->transport->driver_name, | |
2301 | status, | |
d6c82d7b | 2302 | msb == 0 ? "terminated by signal" : "exit code", |
059ec3d9 PH |
2303 | code); |
2304 | } | |
2305 | ||
2306 | /* If SPECIAL_WARN is set in the top address, send a warning message. */ | |
2307 | ||
d6c82d7b | 2308 | if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message) |
059ec3d9 PH |
2309 | { |
2310 | int fd; | |
2311 | uschar *warn_message; | |
d6c82d7b | 2312 | pid_t pid; |
059ec3d9 PH |
2313 | |
2314 | DEBUG(D_deliver) debug_printf("Warning message requested by transport\n"); | |
2315 | ||
d6c82d7b | 2316 | if (!(warn_message = expand_string(addr->transport->warn_message))) |
059ec3d9 PH |
2317 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning " |
2318 | "message for %s transport): %s", addr->transport->warn_message, | |
2319 | addr->transport->name, expand_string_message); | |
d6c82d7b JH |
2320 | |
2321 | else if ((pid = child_open_exim(&fd)) > 0) | |
059ec3d9 | 2322 | { |
d6c82d7b JH |
2323 | FILE *f = fdopen(fd, "wb"); |
2324 | if (errors_reply_to && !contains_header(US"Reply-To", warn_message)) | |
2325 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
2326 | fprintf(f, "Auto-Submitted: auto-replied\n"); | |
2327 | if (!contains_header(US"From", warn_message)) | |
2328 | moan_write_from(f); | |
2329 | fprintf(f, "%s", CS warn_message); | |
059ec3d9 | 2330 | |
d6c82d7b | 2331 | /* Close and wait for child process to complete, without a timeout. */ |
059ec3d9 | 2332 | |
d6c82d7b JH |
2333 | (void)fclose(f); |
2334 | (void)child_close(pid, 0); | |
059ec3d9 PH |
2335 | } |
2336 | ||
2337 | addr->special_action = SPECIAL_NONE; | |
2338 | } | |
2339 | } | |
2340 | ||
2341 | ||
2342 | ||
fa41615d | 2343 | |
3070ceee JH |
2344 | /* Check transport for the given concurrency limit. Return TRUE if over |
2345 | the limit (or an expansion failure), else FALSE and if there was a limit, | |
2346 | the key for the hints database used for the concurrency count. */ | |
fa41615d | 2347 | |
3070ceee JH |
2348 | static BOOL |
2349 | tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key) | |
fa41615d | 2350 | { |
3070ceee JH |
2351 | unsigned max_parallel; |
2352 | ||
2353 | if (!tp->max_parallel) return FALSE; | |
2354 | ||
2355 | max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE); | |
2356 | if (expand_string_message) | |
2357 | { | |
2358 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option " | |
2359 | "in %s transport (%s): %s", tp->name, addr->address, | |
2360 | expand_string_message); | |
2361 | return TRUE; | |
2362 | } | |
2363 | ||
2364 | if (max_parallel > 0) | |
2365 | { | |
2366 | uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name); | |
2367 | if (!enq_start(serialize_key, max_parallel)) | |
2368 | { | |
2369 | address_item * next; | |
2370 | DEBUG(D_transport) | |
2371 | debug_printf("skipping tpt %s because concurrency limit %u reached\n", | |
2372 | tp->name, max_parallel); | |
2373 | do | |
2374 | { | |
2375 | next = addr->next; | |
2376 | addr->message = US"concurrency limit reached for transport"; | |
2377 | addr->basic_errno = ERRNO_TRETRY; | |
2378 | post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0); | |
2379 | } while ((addr = next)); | |
2380 | return TRUE; | |
2381 | } | |
2382 | *key = serialize_key; | |
2383 | } | |
2384 | return FALSE; | |
fa41615d JH |
2385 | } |
2386 | ||
2387 | ||
2388 | ||
059ec3d9 PH |
2389 | /************************************************* |
2390 | * Do local deliveries * | |
2391 | *************************************************/ | |
2392 | ||
2393 | /* This function processes the list of addresses in addr_local. True local | |
2394 | deliveries are always done one address at a time. However, local deliveries can | |
2395 | be batched up in some cases. Typically this is when writing batched SMTP output | |
2396 | files for use by some external transport mechanism, or when running local | |
2397 | deliveries over LMTP. | |
2398 | ||
2399 | Arguments: None | |
2400 | Returns: Nothing | |
2401 | */ | |
2402 | ||
2403 | static void | |
2404 | do_local_deliveries(void) | |
2405 | { | |
2406 | open_db dbblock; | |
2407 | open_db *dbm_file = NULL; | |
2408 | time_t now = time(NULL); | |
2409 | ||
2410 | /* Loop until we have exhausted the supply of local deliveries */ | |
2411 | ||
d6c82d7b | 2412 | while (addr_local) |
059ec3d9 PH |
2413 | { |
2414 | time_t delivery_start; | |
2415 | int deliver_time; | |
2416 | address_item *addr2, *addr3, *nextaddr; | |
2417 | int logflags = LOG_MAIN; | |
2418 | int logchar = dont_deliver? '*' : '='; | |
2419 | transport_instance *tp; | |
fa41615d | 2420 | uschar * serialize_key = NULL; |
059ec3d9 PH |
2421 | |
2422 | /* Pick the first undelivered address off the chain */ | |
2423 | ||
2424 | address_item *addr = addr_local; | |
2425 | addr_local = addr->next; | |
2426 | addr->next = NULL; | |
2427 | ||
2428 | DEBUG(D_deliver|D_transport) | |
2429 | debug_printf("--------> %s <--------\n", addr->address); | |
2430 | ||
2431 | /* An internal disaster if there is no transport. Should not occur! */ | |
2432 | ||
d6c82d7b | 2433 | if (!(tp = addr->transport)) |
059ec3d9 PH |
2434 | { |
2435 | logflags |= LOG_PANIC; | |
2436 | disable_logging = FALSE; /* Jic */ | |
d6c82d7b JH |
2437 | addr->message = addr->router |
2438 | ? string_sprintf("No transport set by %s router", addr->router->name) | |
2439 | : string_sprintf("No transport set by system filter"); | |
059ec3d9 PH |
2440 | post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0); |
2441 | continue; | |
2442 | } | |
2443 | ||
2444 | /* Check that this base address hasn't previously been delivered to this | |
2445 | transport. The check is necessary at this point to handle homonymic addresses | |
2446 | correctly in cases where the pattern of redirection changes between delivery | |
2447 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
2448 | time. */ | |
2449 | ||
c2c19e9d | 2450 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
2451 | |
2452 | /* There are weird cases where logging is disabled */ | |
2453 | ||
2454 | disable_logging = tp->disable_logging; | |
2455 | ||
f7fd3850 PH |
2456 | /* Check for batched addresses and possible amalgamation. Skip all the work |
2457 | if either batch_max <= 1 or there aren't any other addresses for local | |
2458 | delivery. */ | |
059ec3d9 | 2459 | |
d6c82d7b | 2460 | if (tp->batch_max > 1 && addr_local) |
059ec3d9 PH |
2461 | { |
2462 | int batch_count = 1; | |
2463 | BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain"); | |
d6c82d7b JH |
2464 | BOOL uses_lp = ( testflag(addr, af_pfr) |
2465 | && (testflag(addr, af_file) || addr->local_part[0] == '|') | |
2466 | ) | |
2467 | || readconf_depends((driver_instance *)tp, US"local_part"); | |
059ec3d9 PH |
2468 | uschar *batch_id = NULL; |
2469 | address_item **anchor = &addr_local; | |
2470 | address_item *last = addr; | |
2471 | address_item *next; | |
2472 | ||
2473 | /* Expand the batch_id string for comparison with other addresses. | |
2474 | Expansion failure suppresses batching. */ | |
2475 | ||
d6c82d7b | 2476 | if (tp->batch_id) |
059ec3d9 PH |
2477 | { |
2478 | deliver_set_expansions(addr); | |
2479 | batch_id = expand_string(tp->batch_id); | |
2480 | deliver_set_expansions(NULL); | |
d6c82d7b | 2481 | if (!batch_id) |
059ec3d9 PH |
2482 | { |
2483 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2484 | "in %s transport (%s): %s", tp->name, addr->address, | |
2485 | expand_string_message); | |
2486 | batch_count = tp->batch_max; | |
2487 | } | |
2488 | } | |
2489 | ||
2490 | /* Until we reach the batch_max limit, pick off addresses which have the | |
2491 | same characteristics. These are: | |
2492 | ||
2493 | same transport | |
7816e254 | 2494 | not previously delivered (see comment about 50 lines above) |
059ec3d9 | 2495 | same local part if the transport's configuration contains $local_part |
f7fd3850 | 2496 | or if this is a file or pipe delivery from a redirection |
059ec3d9 PH |
2497 | same domain if the transport's configuration contains $domain |
2498 | same errors address | |
2499 | same additional headers | |
2500 | same headers to be removed | |
2501 | same uid/gid for running the transport | |
2502 | same first host if a host list is set | |
2503 | */ | |
2504 | ||
d6c82d7b | 2505 | while ((next = *anchor) && batch_count < tp->batch_max) |
059ec3d9 PH |
2506 | { |
2507 | BOOL ok = | |
d6c82d7b JH |
2508 | tp == next->transport |
2509 | && !previously_transported(next, TRUE) | |
2510 | && (addr->flags & (af_pfr|af_file)) == (next->flags & (af_pfr|af_file)) | |
2511 | && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0) | |
2512 | && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0) | |
2513 | && same_strings(next->prop.errors_address, addr->prop.errors_address) | |
2514 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
2515 | && same_strings(next->prop.remove_headers, addr->prop.remove_headers) | |
2516 | && same_ugid(tp, addr, next) | |
2517 | && ( !addr->host_list && !next->host_list | |
2518 | || addr->host_list | |
2519 | && next->host_list | |
2520 | && Ustrcmp(addr->host_list->name, next->host_list->name) == 0 | |
2521 | ); | |
059ec3d9 PH |
2522 | |
2523 | /* If the transport has a batch_id setting, batch_id will be non-NULL | |
2524 | from the expansion outside the loop. Expand for this address and compare. | |
2525 | Expansion failure makes this address ineligible for batching. */ | |
2526 | ||
d6c82d7b | 2527 | if (ok && batch_id) |
059ec3d9 PH |
2528 | { |
2529 | uschar *bid; | |
2530 | address_item *save_nextnext = next->next; | |
2531 | next->next = NULL; /* Expansion for a single address */ | |
2532 | deliver_set_expansions(next); | |
2533 | next->next = save_nextnext; | |
2534 | bid = expand_string(tp->batch_id); | |
2535 | deliver_set_expansions(NULL); | |
d6c82d7b | 2536 | if (!bid) |
059ec3d9 PH |
2537 | { |
2538 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2539 | "in %s transport (%s): %s", tp->name, next->address, | |
2540 | expand_string_message); | |
2541 | ok = FALSE; | |
2542 | } | |
2543 | else ok = (Ustrcmp(batch_id, bid) == 0); | |
2544 | } | |
2545 | ||
2546 | /* Take address into batch if OK. */ | |
2547 | ||
2548 | if (ok) | |
2549 | { | |
2550 | *anchor = next->next; /* Include the address */ | |
2551 | next->next = NULL; | |
2552 | last->next = next; | |
2553 | last = next; | |
2554 | batch_count++; | |
2555 | } | |
fa41615d | 2556 | else anchor = &next->next; /* Skip the address */ |
059ec3d9 PH |
2557 | } |
2558 | } | |
2559 | ||
2560 | /* We now have one or more addresses that can be delivered in a batch. Check | |
2561 | whether the transport is prepared to accept a message of this size. If not, | |
2562 | fail them all forthwith. If the expansion fails, or does not yield an | |
2563 | integer, defer delivery. */ | |
2564 | ||
d6c82d7b | 2565 | if (tp->message_size_limit) |
059ec3d9 PH |
2566 | { |
2567 | int rc = check_message_size(tp, addr); | |
2568 | if (rc != OK) | |
2569 | { | |
2570 | replicate_status(addr); | |
d6c82d7b | 2571 | while (addr) |
059ec3d9 PH |
2572 | { |
2573 | addr2 = addr->next; | |
2574 | post_process_one(addr, rc, logflags, DTYPE_TRANSPORT, 0); | |
2575 | addr = addr2; | |
2576 | } | |
2577 | continue; /* With next batch of addresses */ | |
2578 | } | |
2579 | } | |
2580 | ||
2581 | /* If we are not running the queue, or if forcing, all deliveries will be | |
2582 | attempted. Otherwise, we must respect the retry times for each address. Even | |
2583 | when not doing this, we need to set up the retry key string, and determine | |
2584 | whether a retry record exists, because after a successful delivery, a delete | |
2585 | retry item must be set up. Keep the retry database open only for the duration | |
2586 | of these checks, rather than for all local deliveries, because some local | |
2587 | deliveries (e.g. to pipes) can take a substantial time. */ | |
2588 | ||
d6c82d7b | 2589 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
059ec3d9 PH |
2590 | { |
2591 | DEBUG(D_deliver|D_retry|D_hints_lookup) | |
2592 | debug_printf("no retry data available\n"); | |
2593 | } | |
2594 | ||
2595 | addr2 = addr; | |
2596 | addr3 = NULL; | |
d6c82d7b | 2597 | while (addr2) |
059ec3d9 PH |
2598 | { |
2599 | BOOL ok = TRUE; /* to deliver this address */ | |
2600 | uschar *retry_key; | |
2601 | ||
2602 | /* Set up the retry key to include the domain or not, and change its | |
2603 | leading character from "R" to "T". Must make a copy before doing this, | |
2604 | because the old key may be pointed to from a "delete" retry item after | |
2605 | a routing delay. */ | |
2606 | ||
2607 | retry_key = string_copy( | |
d6c82d7b | 2608 | tp->retry_use_local_part ? addr2->address_retry_key : |
059ec3d9 PH |
2609 | addr2->domain_retry_key); |
2610 | *retry_key = 'T'; | |
2611 | ||
2612 | /* Inspect the retry data. If there is no hints file, delivery happens. */ | |
2613 | ||
d6c82d7b | 2614 | if (dbm_file) |
059ec3d9 PH |
2615 | { |
2616 | dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key); | |
2617 | ||
2618 | /* If there is no retry record, delivery happens. If there is, | |
2619 | remember it exists so it can be deleted after a successful delivery. */ | |
2620 | ||
d6c82d7b | 2621 | if (retry_record) |
059ec3d9 PH |
2622 | { |
2623 | setflag(addr2, af_lt_retry_exists); | |
2624 | ||
2625 | /* A retry record exists for this address. If queue running and not | |
2626 | forcing, inspect its contents. If the record is too old, or if its | |
2627 | retry time has come, or if it has passed its cutoff time, delivery | |
2628 | will go ahead. */ | |
2629 | ||
2630 | DEBUG(D_retry) | |
2631 | { | |
ea49d0e1 PH |
2632 | debug_printf("retry record exists: age=%s ", |
2633 | readconf_printtime(now - retry_record->time_stamp)); | |
2634 | debug_printf("(max %s)\n", readconf_printtime(retry_data_expire)); | |
2635 | debug_printf(" time to retry = %s expired = %d\n", | |
2636 | readconf_printtime(retry_record->next_try - now), | |
2637 | retry_record->expired); | |
059ec3d9 PH |
2638 | } |
2639 | ||
2640 | if (queue_running && !deliver_force) | |
2641 | { | |
d6c82d7b JH |
2642 | ok = (now - retry_record->time_stamp > retry_data_expire) |
2643 | || (now >= retry_record->next_try) | |
2644 | || retry_record->expired; | |
059ec3d9 PH |
2645 | |
2646 | /* If we haven't reached the retry time, there is one more check | |
1ddeb334 | 2647 | to do, which is for the ultimate address timeout. */ |
059ec3d9 PH |
2648 | |
2649 | if (!ok) | |
ba9af0af TF |
2650 | ok = retry_ultimate_address_timeout(retry_key, addr2->domain, |
2651 | retry_record, now); | |
059ec3d9 PH |
2652 | } |
2653 | } | |
2654 | else DEBUG(D_retry) debug_printf("no retry record exists\n"); | |
2655 | } | |
2656 | ||
2657 | /* This address is to be delivered. Leave it on the chain. */ | |
2658 | ||
2659 | if (ok) | |
2660 | { | |
2661 | addr3 = addr2; | |
2662 | addr2 = addr2->next; | |
2663 | } | |
2664 | ||
2665 | /* This address is to be deferred. Take it out of the chain, and | |
2666 | post-process it as complete. Must take it out of the chain first, | |
2667 | because post processing puts it on another chain. */ | |
2668 | ||
2669 | else | |
2670 | { | |
2671 | address_item *this = addr2; | |
2672 | this->message = US"Retry time not yet reached"; | |
2673 | this->basic_errno = ERRNO_LRETRY; | |
d6c82d7b JH |
2674 | addr2 = addr3 ? (addr3->next = addr2->next) |
2675 | : (addr = addr2->next); | |
059ec3d9 PH |
2676 | post_process_one(this, DEFER, logflags, DTYPE_TRANSPORT, 0); |
2677 | } | |
2678 | } | |
2679 | ||
d6c82d7b | 2680 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
2681 | |
2682 | /* If there are no addresses left on the chain, they all deferred. Loop | |
2683 | for the next set of addresses. */ | |
2684 | ||
d6c82d7b | 2685 | if (!addr) continue; |
059ec3d9 | 2686 | |
fa41615d JH |
2687 | /* If the transport is limited for parallellism, enforce that here. |
2688 | We use a hints DB entry, incremented here and decremented after | |
2689 | the transport (and any shadow transport) completes. */ | |
2690 | ||
3070ceee | 2691 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
fa41615d | 2692 | { |
fa41615d JH |
2693 | if (expand_string_message) |
2694 | { | |
2695 | logflags |= LOG_PANIC; | |
3070ceee JH |
2696 | do |
2697 | { | |
2698 | addr = addr->next; | |
fa41615d | 2699 | post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0); |
3070ceee | 2700 | } while ((addr = addr2)); |
fa41615d | 2701 | } |
3070ceee | 2702 | continue; /* Loop for the next set of addresses. */ |
fa41615d JH |
2703 | } |
2704 | ||
2705 | ||
059ec3d9 PH |
2706 | /* So, finally, we do have some addresses that can be passed to the |
2707 | transport. Before doing so, set up variables that are relevant to a | |
2708 | single delivery. */ | |
2709 | ||
2710 | deliver_set_expansions(addr); | |
2711 | delivery_start = time(NULL); | |
2712 | deliver_local(addr, FALSE); | |
2713 | deliver_time = (int)(time(NULL) - delivery_start); | |
2714 | ||
2715 | /* If a shadow transport (which must perforce be another local transport), is | |
2716 | defined, and its condition is met, we must pass the message to the shadow | |
2717 | too, but only those addresses that succeeded. We do this by making a new | |
2718 | chain of addresses - also to keep the original chain uncontaminated. We must | |
2719 | use a chain rather than doing it one by one, because the shadow transport may | |
2720 | batch. | |
2721 | ||
2722 | NOTE: if the condition fails because of a lookup defer, there is nothing we | |
2723 | can do! */ | |
2724 | ||
d6c82d7b JH |
2725 | if ( tp->shadow |
2726 | && ( !tp->shadow_condition | |
2727 | || expand_check_condition(tp->shadow_condition, tp->name, US"transport") | |
2728 | ) ) | |
059ec3d9 PH |
2729 | { |
2730 | transport_instance *stp; | |
2731 | address_item *shadow_addr = NULL; | |
2732 | address_item **last = &shadow_addr; | |
2733 | ||
d6c82d7b | 2734 | for (stp = transports; stp; stp = stp->next) |
059ec3d9 PH |
2735 | if (Ustrcmp(stp->name, tp->shadow) == 0) break; |
2736 | ||
d6c82d7b | 2737 | if (!stp) |
059ec3d9 PH |
2738 | log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ", |
2739 | tp->shadow); | |
2740 | ||
2741 | /* Pick off the addresses that have succeeded, and make clones. Put into | |
2742 | the shadow_message field a pointer to the shadow_message field of the real | |
2743 | address. */ | |
2744 | ||
d6c82d7b JH |
2745 | else for (addr2 = addr; addr2; addr2 = addr2->next) |
2746 | if (addr2->transport_return == OK) | |
2747 | { | |
2748 | addr3 = store_get(sizeof(address_item)); | |
2749 | *addr3 = *addr2; | |
2750 | addr3->next = NULL; | |
2751 | addr3->shadow_message = (uschar *) &(addr2->shadow_message); | |
2752 | addr3->transport = stp; | |
2753 | addr3->transport_return = DEFER; | |
2754 | addr3->return_filename = NULL; | |
2755 | addr3->return_file = -1; | |
2756 | *last = addr3; | |
2757 | last = &(addr3->next); | |
2758 | } | |
059ec3d9 PH |
2759 | |
2760 | /* If we found any addresses to shadow, run the delivery, and stick any | |
2761 | message back into the shadow_message field in the original. */ | |
2762 | ||
d6c82d7b | 2763 | if (shadow_addr) |
059ec3d9 PH |
2764 | { |
2765 | int save_count = transport_count; | |
2766 | ||
2767 | DEBUG(D_deliver|D_transport) | |
2768 | debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n"); | |
2769 | deliver_local(shadow_addr, TRUE); | |
2770 | ||
d6c82d7b | 2771 | for(; shadow_addr; shadow_addr = shadow_addr->next) |
059ec3d9 PH |
2772 | { |
2773 | int sresult = shadow_addr->transport_return; | |
d6c82d7b JH |
2774 | *(uschar **)shadow_addr->shadow_message = |
2775 | sresult == OK | |
2776 | ? string_sprintf(" ST=%s", stp->name) | |
2777 | : string_sprintf(" ST=%s (%s%s%s)", stp->name, | |
2778 | shadow_addr->basic_errno <= 0 | |
2779 | ? US"" | |
2780 | : US strerror(shadow_addr->basic_errno), | |
2781 | shadow_addr->basic_errno <= 0 || !shadow_addr->message | |
2782 | ? US"" | |
2783 | : US": ", | |
2784 | shadow_addr->message | |
2785 | ? shadow_addr->message | |
2786 | : shadow_addr->basic_errno <= 0 | |
2787 | ? US"unknown error" | |
2788 | : US""); | |
059ec3d9 PH |
2789 | |
2790 | DEBUG(D_deliver|D_transport) | |
2791 | debug_printf("%s shadow transport returned %s for %s\n", | |
2792 | stp->name, | |
d6c82d7b JH |
2793 | sresult == OK ? "OK" : |
2794 | sresult == DEFER ? "DEFER" : | |
2795 | sresult == FAIL ? "FAIL" : | |
2796 | sresult == PANIC ? "PANIC" : "?", | |
059ec3d9 PH |
2797 | shadow_addr->address); |
2798 | } | |
2799 | ||
2800 | DEBUG(D_deliver|D_transport) | |
2801 | debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n"); | |
2802 | ||
2803 | transport_count = save_count; /* Restore original transport count */ | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | /* Cancel the expansions that were set up for the delivery. */ | |
2808 | ||
2809 | deliver_set_expansions(NULL); | |
2810 | ||
fa41615d JH |
2811 | /* If the transport was parallelism-limited, decrement the hints DB record. */ |
2812 | ||
2813 | if (serialize_key) enq_end(serialize_key); | |
2814 | ||
059ec3d9 PH |
2815 | /* Now we can process the results of the real transport. We must take each |
2816 | address off the chain first, because post_process_one() puts it on another | |
2817 | chain. */ | |
2818 | ||
d6c82d7b | 2819 | for (addr2 = addr; addr2; addr2 = nextaddr) |
059ec3d9 PH |
2820 | { |
2821 | int result = addr2->transport_return; | |
2822 | nextaddr = addr2->next; | |
2823 | ||
2824 | DEBUG(D_deliver|D_transport) | |
2825 | debug_printf("%s transport returned %s for %s\n", | |
2826 | tp->name, | |
d6c82d7b JH |
2827 | result == OK ? "OK" : |
2828 | result == DEFER ? "DEFER" : | |
2829 | result == FAIL ? "FAIL" : | |
2830 | result == PANIC ? "PANIC" : "?", | |
059ec3d9 PH |
2831 | addr2->address); |
2832 | ||
2833 | /* If there is a retry_record, or if delivery is deferred, build a retry | |
2834 | item for setting a new retry time or deleting the old retry record from | |
2835 | the database. These items are handled all together after all addresses | |
2836 | have been handled (so the database is open just for a short time for | |
2837 | updating). */ | |
2838 | ||
2839 | if (result == DEFER || testflag(addr2, af_lt_retry_exists)) | |
2840 | { | |
d6c82d7b JH |
2841 | int flags = result == DEFER ? 0 : rf_delete; |
2842 | uschar *retry_key = string_copy(tp->retry_use_local_part | |
2843 | ? addr2->address_retry_key : addr2->domain_retry_key); | |
059ec3d9 PH |
2844 | *retry_key = 'T'; |
2845 | retry_add_item(addr2, retry_key, flags); | |
2846 | } | |
2847 | ||
2848 | /* Done with this address */ | |
2849 | ||
2850 | if (result == OK) addr2->more_errno = deliver_time; | |
2851 | post_process_one(addr2, result, logflags, DTYPE_TRANSPORT, logchar); | |
2852 | ||
2853 | /* If a pipe delivery generated text to be sent back, the result may be | |
2854 | changed to FAIL, and we must copy this for subsequent addresses in the | |
2855 | batch. */ | |
2856 | ||
2857 | if (addr2->transport_return != result) | |
2858 | { | |
d6c82d7b | 2859 | for (addr3 = nextaddr; addr3; addr3 = addr3->next) |
059ec3d9 PH |
2860 | { |
2861 | addr3->transport_return = addr2->transport_return; | |
2862 | addr3->basic_errno = addr2->basic_errno; | |
2863 | addr3->message = addr2->message; | |
2864 | } | |
2865 | result = addr2->transport_return; | |
2866 | } | |
2867 | ||
2868 | /* Whether or not the result was changed to FAIL, we need to copy the | |
2869 | return_file value from the first address into all the addresses of the | |
2870 | batch, so they are all listed in the error message. */ | |
2871 | ||
2872 | addr2->return_file = addr->return_file; | |
2873 | ||
2874 | /* Change log character for recording successful deliveries. */ | |
2875 | ||
2876 | if (result == OK) logchar = '-'; | |
2877 | } | |
2878 | } /* Loop back for next batch of addresses */ | |
2879 | } | |
2880 | ||
2881 | ||
2882 | ||
2883 | ||
2884 | /************************************************* | |
2885 | * Sort remote deliveries * | |
2886 | *************************************************/ | |
2887 | ||
2888 | /* This function is called if remote_sort_domains is set. It arranges that the | |
2889 | chain of addresses for remote deliveries is ordered according to the strings | |
2890 | specified. Try to make this shuffling reasonably efficient by handling | |
2891 | sequences of addresses rather than just single ones. | |
2892 | ||
2893 | Arguments: None | |
2894 | Returns: Nothing | |
2895 | */ | |
2896 | ||
2897 | static void | |
2898 | sort_remote_deliveries(void) | |
2899 | { | |
2900 | int sep = 0; | |
2901 | address_item **aptr = &addr_remote; | |
55414b25 | 2902 | const uschar *listptr = remote_sort_domains; |
059ec3d9 PH |
2903 | uschar *pattern; |
2904 | uschar patbuf[256]; | |
2905 | ||
d6c82d7b JH |
2906 | while ( *aptr |
2907 | && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf))) | |
2908 | ) | |
059ec3d9 PH |
2909 | { |
2910 | address_item *moved = NULL; | |
2911 | address_item **bptr = &moved; | |
2912 | ||
d6c82d7b | 2913 | while (*aptr) |
059ec3d9 PH |
2914 | { |
2915 | address_item **next; | |
2916 | deliver_domain = (*aptr)->domain; /* set $domain */ | |
55414b25 | 2917 | if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
059ec3d9 PH |
2918 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK) |
2919 | { | |
d6c82d7b | 2920 | aptr = &(*aptr)->next; |
059ec3d9 PH |
2921 | continue; |
2922 | } | |
2923 | ||
d6c82d7b JH |
2924 | next = &(*aptr)->next; |
2925 | while ( *next | |
2926 | && (deliver_domain = (*next)->domain, /* Set $domain */ | |
55414b25 | 2927 | match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
d6c82d7b JH |
2928 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK |
2929 | ) | |
2930 | next = &(*next)->next; | |
059ec3d9 PH |
2931 | |
2932 | /* If the batch of non-matchers is at the end, add on any that were | |
2933 | extracted further up the chain, and end this iteration. Otherwise, | |
2934 | extract them from the chain and hang on the moved chain. */ | |
2935 | ||
d6c82d7b | 2936 | if (!*next) |
059ec3d9 PH |
2937 | { |
2938 | *next = moved; | |
2939 | break; | |
2940 | } | |
2941 | ||
2942 | *bptr = *aptr; | |
2943 | *aptr = *next; | |
2944 | *next = NULL; | |
2945 | bptr = next; | |
d6c82d7b | 2946 | aptr = &(*aptr)->next; |
059ec3d9 PH |
2947 | } |
2948 | ||
2949 | /* If the loop ended because the final address matched, *aptr will | |
2950 | be NULL. Add on to the end any extracted non-matching addresses. If | |
2951 | *aptr is not NULL, the loop ended via "break" when *next is null, that | |
2952 | is, there was a string of non-matching addresses at the end. In this | |
2953 | case the extracted addresses have already been added on the end. */ | |
2954 | ||
d6c82d7b | 2955 | if (!*aptr) *aptr = moved; |
059ec3d9 PH |
2956 | } |
2957 | ||
2958 | DEBUG(D_deliver) | |
2959 | { | |
2960 | address_item *addr; | |
2961 | debug_printf("remote addresses after sorting:\n"); | |
d6c82d7b | 2962 | for (addr = addr_remote; addr; addr = addr->next) |
059ec3d9 PH |
2963 | debug_printf(" %s\n", addr->address); |
2964 | } | |
2965 | } | |
2966 | ||
2967 | ||
2968 | ||
2969 | /************************************************* | |
2970 | * Read from pipe for remote delivery subprocess * | |
2971 | *************************************************/ | |
2972 | ||
2973 | /* This function is called when the subprocess is complete, but can also be | |
2974 | called before it is complete, in order to empty a pipe that is full (to prevent | |
2975 | deadlock). It must therefore keep track of its progress in the parlist data | |
2976 | block. | |
2977 | ||
2978 | We read the pipe to get the delivery status codes and a possible error message | |
2979 | for each address, optionally preceded by unusability data for the hosts and | |
2980 | also by optional retry data. | |
2981 | ||
2982 | Read in large chunks into the big buffer and then scan through, interpreting | |
2983 | the data therein. In most cases, only a single read will be necessary. No | |
1c5466b9 PH |
2984 | individual item will ever be anywhere near 2500 bytes in length, so by ensuring |
2985 | that we read the next chunk when there is less than 2500 bytes left in the | |
2986 | non-final chunk, we can assume each item is complete in the buffer before | |
2987 | handling it. Each item is written using a single write(), which is atomic for | |
2988 | small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and | |
2989 | often bigger) so even if we are reading while the subprocess is still going, we | |
2990 | should never have only a partial item in the buffer. | |
059ec3d9 PH |
2991 | |
2992 | Argument: | |
2993 | poffset the offset of the parlist item | |
2994 | eop TRUE if the process has completed | |
2995 | ||
2996 | Returns: TRUE if the terminating 'Z' item has been read, | |
2997 | or there has been a disaster (i.e. no more data needed); | |
2998 | FALSE otherwise | |
2999 | */ | |
3000 | ||
3001 | static BOOL | |
3002 | par_read_pipe(int poffset, BOOL eop) | |
3003 | { | |
3004 | host_item *h; | |
3005 | pardata *p = parlist + poffset; | |
3006 | address_item *addrlist = p->addrlist; | |
3007 | address_item *addr = p->addr; | |
3008 | pid_t pid = p->pid; | |
3009 | int fd = p->fd; | |
3010 | uschar *endptr = big_buffer; | |
3011 | uschar *ptr = endptr; | |
3012 | uschar *msg = p->msg; | |
3013 | BOOL done = p->done; | |
3014 | BOOL unfinished = TRUE; | |
bd21a787 WB |
3015 | /* minimum size to read is header size including id, subid and length */ |
3016 | int required = PIPE_HEADER_SIZE; | |
059ec3d9 PH |
3017 | |
3018 | /* Loop through all items, reading from the pipe when necessary. The pipe | |
3019 | is set up to be non-blocking, but there are two different Unix mechanisms in | |
3020 | use. Exim uses O_NONBLOCK if it is defined. This returns 0 for end of file, | |
3021 | and EAGAIN for no more data. If O_NONBLOCK is not defined, Exim uses O_NDELAY, | |
3022 | which returns 0 for both end of file and no more data. We distinguish the | |
3023 | two cases by taking 0 as end of file only when we know the process has | |
3024 | completed. | |
3025 | ||
3026 | Each separate item is written to the pipe in a single write(), and as they are | |
3027 | all short items, the writes will all be atomic and we should never find | |
8e669ac1 PH |
3028 | ourselves in the position of having read an incomplete item. "Short" in this |
3029 | case can mean up to about 1K in the case when there is a long error message | |
1c5466b9 | 3030 | associated with an address. */ |
059ec3d9 PH |
3031 | |
3032 | DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n", | |
3033 | (int)p->pid, eop? "ended" : "not ended"); | |
3034 | ||
3035 | while (!done) | |
3036 | { | |
3037 | retry_item *r, **rp; | |
3038 | int remaining = endptr - ptr; | |
bd21a787 WB |
3039 | uschar header[PIPE_HEADER_SIZE + 1]; |
3040 | uschar id, subid; | |
3041 | uschar *endc; | |
059ec3d9 PH |
3042 | |
3043 | /* Read (first time) or top up the chars in the buffer if necessary. | |
3044 | There will be only one read if we get all the available data (i.e. don't | |
3045 | fill the buffer completely). */ | |
3046 | ||
bd21a787 | 3047 | if (remaining < required && unfinished) |
059ec3d9 PH |
3048 | { |
3049 | int len; | |
3050 | int available = big_buffer_size - remaining; | |
3051 | ||
3052 | if (remaining > 0) memmove(big_buffer, ptr, remaining); | |
3053 | ||
3054 | ptr = big_buffer; | |
3055 | endptr = big_buffer + remaining; | |
3056 | len = read(fd, endptr, available); | |
3057 | ||
3058 | DEBUG(D_deliver) debug_printf("read() yielded %d\n", len); | |
3059 | ||
3060 | /* If the result is EAGAIN and the process is not complete, just | |
3061 | stop reading any more and process what we have already. */ | |
3062 | ||
3063 | if (len < 0) | |
3064 | { | |
3065 | if (!eop && errno == EAGAIN) len = 0; else | |
3066 | { | |
3067 | msg = string_sprintf("failed to read pipe from transport process " | |
3068 | "%d for transport %s: %s", pid, addr->transport->driver_name, | |
3069 | strerror(errno)); | |
3070 | break; | |
3071 | } | |
3072 | } | |
3073 | ||
3074 | /* If the length is zero (eof or no-more-data), just process what we | |
3075 | already have. Note that if the process is still running and we have | |
3076 | read all the data in the pipe (but less that "available") then we | |
3077 | won't read any more, as "unfinished" will get set FALSE. */ | |
3078 | ||
3079 | endptr += len; | |
bd21a787 | 3080 | remaining += len; |
059ec3d9 PH |
3081 | unfinished = len == available; |
3082 | } | |
3083 | ||
3084 | /* If we are at the end of the available data, exit the loop. */ | |
059ec3d9 PH |
3085 | if (ptr >= endptr) break; |
3086 | ||
bd21a787 WB |
3087 | /* copy and read header */ |
3088 | memcpy(header, ptr, PIPE_HEADER_SIZE); | |
94431adb | 3089 | header[PIPE_HEADER_SIZE] = '\0'; |
bd21a787 WB |
3090 | id = header[0]; |
3091 | subid = header[1]; | |
3092 | required = Ustrtol(header + 2, &endc, 10) + PIPE_HEADER_SIZE; /* header + data */ | |
3093 | if (*endc) | |
3094 | { | |
3095 | msg = string_sprintf("failed to read pipe from transport process " | |
3096 | "%d for transport %s: error reading size from header", pid, addr->transport->driver_name); | |
3097 | done = TRUE; | |
3098 | break; | |
3099 | } | |
3100 | ||
3101 | DEBUG(D_deliver) | |
94431adb | 3102 | debug_printf("header read id:%c,subid:%c,size:%s,required:%d,remaining:%d,unfinished:%d\n", |
bd21a787 WB |
3103 | id, subid, header+2, required, remaining, unfinished); |
3104 | ||
3105 | /* is there room for the dataset we want to read ? */ | |
3106 | if (required > big_buffer_size - PIPE_HEADER_SIZE) | |
3107 | { | |
3108 | msg = string_sprintf("failed to read pipe from transport process " | |
3109 | "%d for transport %s: big_buffer too small! required size=%d buffer size=%d", pid, addr->transport->driver_name, | |
3110 | required, big_buffer_size - PIPE_HEADER_SIZE); | |
3111 | done = TRUE; | |
3112 | break; | |
3113 | } | |
3114 | ||
94431adb | 3115 | /* we wrote all datasets with atomic write() calls |
bd21a787 | 3116 | remaining < required only happens if big_buffer was too small |
94431adb | 3117 | to get all available data from pipe. unfinished has to be true |
bd21a787 WB |
3118 | as well. */ |
3119 | if (remaining < required) | |
8fa0a4d4 | 3120 | { |
bd21a787 WB |
3121 | if (unfinished) |
3122 | continue; | |
8fa0a4d4 | 3123 | msg = string_sprintf("failed to read pipe from transport process " |
94431adb | 3124 | "%d for transport %s: required size=%d > remaining size=%d and unfinished=false", |
8fa0a4d4 JH |
3125 | pid, addr->transport->driver_name, required, remaining); |
3126 | done = TRUE; | |
3127 | break; | |
3128 | } | |
bd21a787 WB |
3129 | |
3130 | /* step behind the header */ | |
3131 | ptr += PIPE_HEADER_SIZE; | |
94431adb | 3132 | |
059ec3d9 PH |
3133 | /* Handle each possible type of item, assuming the complete item is |
3134 | available in store. */ | |
3135 | ||
bd21a787 | 3136 | switch (id) |
059ec3d9 PH |
3137 | { |
3138 | /* Host items exist only if any hosts were marked unusable. Match | |
3139 | up by checking the IP address. */ | |
3140 | ||
3141 | case 'H': | |
d6c82d7b | 3142 | for (h = addrlist->host_list; h; h = h->next) |
059ec3d9 | 3143 | { |
d6c82d7b | 3144 | if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue; |
059ec3d9 PH |
3145 | h->status = ptr[0]; |
3146 | h->why = ptr[1]; | |
3147 | } | |
3148 | ptr += 2; | |
3149 | while (*ptr++); | |
3150 | break; | |
3151 | ||
3152 | /* Retry items are sent in a preceding R item for each address. This is | |
3153 | kept separate to keep each message short enough to guarantee it won't | |
3154 | be split in the pipe. Hopefully, in the majority of cases, there won't in | |
3155 | fact be any retry items at all. | |
3156 | ||
3157 | The complete set of retry items might include an item to delete a | |
3158 | routing retry if there was a previous routing delay. However, routing | |
3159 | retries are also used when a remote transport identifies an address error. | |
3160 | In that case, there may also be an "add" item for the same key. Arrange | |
3161 | that a "delete" item is dropped in favour of an "add" item. */ | |
3162 | ||
3163 | case 'R': | |
d6c82d7b | 3164 | if (!addr) goto ADDR_MISMATCH; |
059ec3d9 PH |
3165 | |
3166 | DEBUG(D_deliver|D_retry) | |
3167 | debug_printf("reading retry information for %s from subprocess\n", | |
3168 | ptr+1); | |
3169 | ||
3170 | /* Cut out any "delete" items on the list. */ | |
3171 | ||
d6c82d7b | 3172 | for (rp = &(addr->retries); (r = *rp); rp = &r->next) |
059ec3d9 PH |
3173 | if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */ |
3174 | { | |
3175 | if ((r->flags & rf_delete) == 0) break; /* It was not "delete" */ | |
3176 | *rp = r->next; /* Excise a delete item */ | |
3177 | DEBUG(D_deliver|D_retry) | |
3178 | debug_printf(" existing delete item dropped\n"); | |
3179 | } | |
059ec3d9 PH |
3180 | |
3181 | /* We want to add a delete item only if there is no non-delete item; | |
3182 | however we still have to step ptr through the data. */ | |
3183 | ||
d6c82d7b | 3184 | if (!r || (*ptr & rf_delete) == 0) |
059ec3d9 PH |
3185 | { |
3186 | r = store_get(sizeof(retry_item)); | |
3187 | r->next = addr->retries; | |
3188 | addr->retries = r; | |
3189 | r->flags = *ptr++; | |
3190 | r->key = string_copy(ptr); | |
3191 | while (*ptr++); | |
3192 | memcpy(&(r->basic_errno), ptr, sizeof(r->basic_errno)); | |
3193 | ptr += sizeof(r->basic_errno); | |
3194 | memcpy(&(r->more_errno), ptr, sizeof(r->more_errno)); | |
3195 | ptr += sizeof(r->more_errno); | |
3196 | r->message = (*ptr)? string_copy(ptr) : NULL; | |
3197 | DEBUG(D_deliver|D_retry) | |
3198 | debug_printf(" added %s item\n", | |
3199 | ((r->flags & rf_delete) == 0)? "retry" : "delete"); | |
3200 | } | |
3201 | ||
3202 | else | |
3203 | { | |
3204 | DEBUG(D_deliver|D_retry) | |
3205 | debug_printf(" delete item not added: non-delete item exists\n"); | |
3206 | ptr++; | |
3207 | while(*ptr++); | |
3208 | ptr += sizeof(r->basic_errno) + sizeof(r->more_errno); | |
3209 | } | |
3210 | ||
3211 | while(*ptr++); | |
3212 | break; | |
3213 | ||
3214 | /* Put the amount of data written into the parlist block */ | |
3215 | ||
3216 | case 'S': | |
3217 | memcpy(&(p->transport_count), ptr, sizeof(transport_count)); | |
3218 | ptr += sizeof(transport_count); | |
3219 | break; | |
3220 | ||
3221 | /* Address items are in the order of items on the address chain. We | |
3222 | remember the current address value in case this function is called | |
3223 | several times to empty the pipe in stages. Information about delivery | |
3224 | over TLS is sent in a preceding X item for each address. We don't put | |
3225 | it in with the other info, in order to keep each message short enough to | |
3226 | guarantee it won't be split in the pipe. */ | |
3227 | ||
a7538db1 | 3228 | #ifdef SUPPORT_TLS |
059ec3d9 | 3229 | case 'X': |
d6c82d7b | 3230 | if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */ |
bd21a787 | 3231 | switch (subid) |
9d1c15ef JH |
3232 | { |
3233 | case '1': | |
3234 | addr->cipher = NULL; | |
3235 | addr->peerdn = NULL; | |
3236 | ||
3237 | if (*ptr) | |
3238 | addr->cipher = string_copy(ptr); | |
3239 | while (*ptr++); | |
3240 | if (*ptr) | |
9d1c15ef | 3241 | addr->peerdn = string_copy(ptr); |
9d1c15ef JH |
3242 | break; |
3243 | ||
3244 | case '2': | |
9d1c15ef JH |
3245 | if (*ptr) |
3246 | (void) tls_import_cert(ptr, &addr->peercert); | |
152e7604 JH |
3247 | else |
3248 | addr->peercert = NULL; | |
9d1c15ef JH |
3249 | break; |
3250 | ||
3251 | case '3': | |
9d1c15ef JH |
3252 | if (*ptr) |
3253 | (void) tls_import_cert(ptr, &addr->ourcert); | |
152e7604 JH |
3254 | else |
3255 | addr->ourcert = NULL; | |
9d1c15ef | 3256 | break; |
018058b2 | 3257 | |
a7538db1 | 3258 | # ifndef DISABLE_OCSP |
018058b2 JH |
3259 | case '4': |
3260 | addr->ocsp = OCSP_NOT_REQ; | |
3261 | if (*ptr) | |
3262 | addr->ocsp = *ptr - '0'; | |
3263 | break; | |
a7538db1 | 3264 | # endif |
9d1c15ef | 3265 | } |
059ec3d9 PH |
3266 | while (*ptr++); |
3267 | break; | |
a7538db1 | 3268 | #endif /*SUPPORT_TLS*/ |
059ec3d9 | 3269 | |
6f123593 | 3270 | case 'C': /* client authenticator information */ |
bd21a787 | 3271 | switch (subid) |
9d1c15ef JH |
3272 | { |
3273 | case '1': | |
3274 | addr->authenticator = (*ptr)? string_copy(ptr) : NULL; | |
3275 | break; | |
3276 | case '2': | |
3277 | addr->auth_id = (*ptr)? string_copy(ptr) : NULL; | |
3278 | break; | |
3279 | case '3': | |
3280 | addr->auth_sndr = (*ptr)? string_copy(ptr) : NULL; | |
3281 | break; | |
3282 | } | |
6f123593 JH |
3283 | while (*ptr++); |
3284 | break; | |
3285 | ||
8ccd00b1 | 3286 | #ifndef DISABLE_PRDR |
fd98a5c6 | 3287 | case 'P': |
8ccd00b1 JH |
3288 | addr->flags |= af_prdr_used; |
3289 | break; | |
fd98a5c6 JH |
3290 | #endif |
3291 | ||
6c1c3d1d | 3292 | case 'D': |
d6c82d7b | 3293 | if (!addr) goto ADDR_MISMATCH; |
6c1c3d1d WB |
3294 | memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware)); |
3295 | ptr += sizeof(addr->dsn_aware); | |
3296 | DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware); | |
3297 | break; | |
6c1c3d1d | 3298 | |
059ec3d9 | 3299 | case 'A': |
d6c82d7b | 3300 | if (!addr) |
059ec3d9 PH |
3301 | { |
3302 | ADDR_MISMATCH: | |
3303 | msg = string_sprintf("address count mismatch for data read from pipe " | |
3304 | "for transport process %d for transport %s", pid, | |
3305 | addrlist->transport->driver_name); | |
3306 | done = TRUE; | |
3307 | break; | |
3308 | } | |
3309 | ||
895fbaf2 | 3310 | switch (subid) |
059ec3d9 | 3311 | { |
e6d2a989 JH |
3312 | #ifdef SUPPORT_SOCKS |
3313 | case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/ | |
3314 | proxy_session = TRUE; /*XXX shouod this be cleared somewhere? */ | |
3315 | if (*ptr == 0) | |
3316 | ptr++; | |
3317 | else | |
3318 | { | |
3319 | proxy_local_address = string_copy(ptr); | |
3320 | while(*ptr++); | |
3321 | memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port)); | |
3322 | ptr += sizeof(proxy_local_port); | |
3323 | } | |
3324 | break; | |
3325 | #endif | |
3326 | ||
895fbaf2 JH |
3327 | #ifdef EXPERIMENTAL_DSN_INFO |
3328 | case '1': /* must arrive before A0, and applies to that addr */ | |
3329 | /* Two strings: smtp_greeting and helo_response */ | |
3330 | addr->smtp_greeting = string_copy(ptr); | |
3331 | while(*ptr++); | |
3332 | addr->helo_response = string_copy(ptr); | |
3333 | while(*ptr++); | |
3334 | break; | |
3335 | #endif | |
059ec3d9 | 3336 | |
895fbaf2 JH |
3337 | case '0': |
3338 | addr->transport_return = *ptr++; | |
3339 | addr->special_action = *ptr++; | |
3340 | memcpy(&(addr->basic_errno), ptr, sizeof(addr->basic_errno)); | |
3341 | ptr += sizeof(addr->basic_errno); | |
3342 | memcpy(&(addr->more_errno), ptr, sizeof(addr->more_errno)); | |
3343 | ptr += sizeof(addr->more_errno); | |
3344 | memcpy(&(addr->flags), ptr, sizeof(addr->flags)); | |
3345 | ptr += sizeof(addr->flags); | |
3346 | addr->message = (*ptr)? string_copy(ptr) : NULL; | |
3347 | while(*ptr++); | |
3348 | addr->user_message = (*ptr)? string_copy(ptr) : NULL; | |
3349 | while(*ptr++); | |
059ec3d9 | 3350 | |
895fbaf2 JH |
3351 | /* Always two strings for host information, followed by the port number and DNSSEC mark */ |
3352 | ||
3353 | if (*ptr != 0) | |
3354 | { | |
3355 | h = store_get(sizeof(host_item)); | |
3356 | h->name = string_copy(ptr); | |
3357 | while (*ptr++); | |
3358 | h->address = string_copy(ptr); | |
3359 | while(*ptr++); | |
3360 | memcpy(&(h->port), ptr, sizeof(h->port)); | |
3361 | ptr += sizeof(h->port); | |
3362 | h->dnssec = *ptr == '2' ? DS_YES | |
3363 | : *ptr == '1' ? DS_NO | |
3364 | : DS_UNK; | |
3365 | ptr++; | |
3366 | addr->host_used = h; | |
3367 | } | |
3368 | else ptr++; | |
3369 | ||
3370 | /* Finished with this address */ | |
3371 | ||
3372 | addr = addr->next; | |
3373 | break; | |
3374 | } | |
059ec3d9 PH |
3375 | break; |
3376 | ||
aeaf5db3 JH |
3377 | /* Local interface address/port */ |
3378 | case 'I': | |
3379 | if (*ptr) sending_ip_address = string_copy(ptr); | |
3380 | while (*ptr++) ; | |
93a6fce2 | 3381 | if (*ptr) sending_port = atoi(CS ptr); |
aeaf5db3 JH |
3382 | while (*ptr++) ; |
3383 | break; | |
3384 | ||
059ec3d9 PH |
3385 | /* Z marks the logical end of the data. It is followed by '0' if |
3386 | continue_transport was NULL at the end of transporting, otherwise '1'. | |
3387 | We need to know when it becomes NULL during a delivery down a passed SMTP | |
3388 | channel so that we don't try to pass anything more down it. Of course, for | |
3389 | most normal messages it will remain NULL all the time. */ | |
3390 | ||
3391 | case 'Z': | |
3392 | if (*ptr == '0') | |
3393 | { | |
3394 | continue_transport = NULL; | |
3395 | continue_hostname = NULL; | |
3396 | } | |
3397 | done = TRUE; | |
bd21a787 | 3398 | DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr); |
059ec3d9 PH |
3399 | break; |
3400 | ||
3401 | /* Anything else is a disaster. */ | |
3402 | ||
3403 | default: | |
3404 | msg = string_sprintf("malformed data (%d) read from pipe for transport " | |
3405 | "process %d for transport %s", ptr[-1], pid, | |
3406 | addr->transport->driver_name); | |
3407 | done = TRUE; | |
3408 | break; | |
3409 | } | |
3410 | } | |
3411 | ||
3412 | /* The done flag is inspected externally, to determine whether or not to | |
3413 | call the function again when the process finishes. */ | |
3414 | ||
3415 | p->done = done; | |
3416 | ||
3417 | /* If the process hadn't finished, and we haven't seen the end of the data | |
3418 | or suffered a disaster, update the rest of the state, and return FALSE to | |
3419 | indicate "not finished". */ | |
3420 | ||
3421 | if (!eop && !done) | |
3422 | { | |
3423 | p->addr = addr; | |
3424 | p->msg = msg; | |
3425 | return FALSE; | |
3426 | } | |
3427 | ||
3428 | /* Close our end of the pipe, to prevent deadlock if the far end is still | |
3429 | pushing stuff into it. */ | |
3430 | ||
f1e894f3 | 3431 | (void)close(fd); |
059ec3d9 PH |
3432 | p->fd = -1; |
3433 | ||
3434 | /* If we have finished without error, but haven't had data for every address, | |
3435 | something is wrong. */ | |
3436 | ||
d6c82d7b | 3437 | if (!msg && addr) |
059ec3d9 PH |
3438 | msg = string_sprintf("insufficient address data read from pipe " |
3439 | "for transport process %d for transport %s", pid, | |
3440 | addr->transport->driver_name); | |
3441 | ||
3442 | /* If an error message is set, something has gone wrong in getting back | |
3443 | the delivery data. Put the message into each address and freeze it. */ | |
3444 | ||
d6c82d7b JH |
3445 | if (msg) |
3446 | for (addr = addrlist; addr; addr = addr->next) | |
059ec3d9 PH |
3447 | { |
3448 | addr->transport_return = DEFER; | |
3449 | addr->special_action = SPECIAL_FREEZE; | |
3450 | addr->message = msg; | |
3451 | } | |
059ec3d9 PH |
3452 | |
3453 | /* Return TRUE to indicate we have got all we need from this process, even | |
3454 | if it hasn't actually finished yet. */ | |
3455 | ||
3456 | return TRUE; | |
3457 | } | |
3458 | ||
3459 | ||
3460 | ||
3461 | /************************************************* | |
3462 | * Post-process a set of remote addresses * | |
3463 | *************************************************/ | |
3464 | ||
3465 | /* Do what has to be done immediately after a remote delivery for each set of | |
3466 | addresses, then re-write the spool if necessary. Note that post_process_one | |
3467 | puts the address on an appropriate queue; hence we must fish off the next | |
3468 | one first. This function is also called if there is a problem with setting | |
3469 | up a subprocess to do a remote delivery in parallel. In this case, the final | |
3470 | argument contains a message, and the action must be forced to DEFER. | |
3471 | ||
3472 | Argument: | |
3473 | addr pointer to chain of address items | |
3474 | logflags flags for logging | |
3475 | msg NULL for normal cases; -> error message for unexpected problems | |
3476 | fallback TRUE if processing fallback hosts | |
3477 | ||
3478 | Returns: nothing | |
3479 | */ | |
3480 | ||
3481 | static void | |
3482 | remote_post_process(address_item *addr, int logflags, uschar *msg, | |
3483 | BOOL fallback) | |
3484 | { | |
3485 | host_item *h; | |
3486 | ||
3487 | /* If any host addresses were found to be unusable, add them to the unusable | |
3488 | tree so that subsequent deliveries don't try them. */ | |
3489 | ||
d6c82d7b JH |
3490 | for (h = addr->host_list; h; h = h->next) |
3491 | if (h->address) | |
3492 | if (h->status >= hstatus_unusable) tree_add_unusable(h); | |
059ec3d9 PH |
3493 | |
3494 | /* Now handle each address on the chain. The transport has placed '=' or '-' | |
3495 | into the special_action field for each successful delivery. */ | |
3496 | ||
d6c82d7b | 3497 | while (addr) |
059ec3d9 PH |
3498 | { |
3499 | address_item *next = addr->next; | |
3500 | ||
3501 | /* If msg == NULL (normal processing) and the result is DEFER and we are | |
3502 | processing the main hosts and there are fallback hosts available, put the | |
3503 | address on the list for fallback delivery. */ | |
3504 | ||
d6c82d7b JH |
3505 | if ( addr->transport_return == DEFER |
3506 | && addr->fallback_hosts | |
3507 | && !fallback | |
3508 | && !msg | |
3509 | ) | |
059ec3d9 PH |
3510 | { |
3511 | addr->host_list = addr->fallback_hosts; | |
3512 | addr->next = addr_fallback; | |
3513 | addr_fallback = addr; | |
3514 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address); | |
3515 | } | |
3516 | ||
3517 | /* If msg is set (=> unexpected problem), set it in the address before | |
3518 | doing the ordinary post processing. */ | |
3519 | ||
3520 | else | |
3521 | { | |
d6c82d7b | 3522 | if (msg) |
059ec3d9 PH |
3523 | { |
3524 | addr->message = msg; | |
3525 | addr->transport_return = DEFER; | |
3526 | } | |
3527 | (void)post_process_one(addr, addr->transport_return, logflags, | |
3528 | DTYPE_TRANSPORT, addr->special_action); | |
3529 | } | |
3530 | ||
3531 | /* Next address */ | |
3532 | ||
3533 | addr = next; | |
3534 | } | |
3535 | ||
3536 | /* If we have just delivered down a passed SMTP channel, and that was | |
3537 | the last address, the channel will have been closed down. Now that | |
3538 | we have logged that delivery, set continue_sequence to 1 so that | |
3539 | any subsequent deliveries don't get "*" incorrectly logged. */ | |
3540 | ||
d6c82d7b | 3541 | if (!continue_transport) continue_sequence = 1; |
059ec3d9 PH |
3542 | } |
3543 | ||
3544 | ||
3545 | ||
3546 | /************************************************* | |
3547 | * Wait for one remote delivery subprocess * | |
3548 | *************************************************/ | |
3549 | ||
3550 | /* This function is called while doing remote deliveries when either the | |
3551 | maximum number of processes exist and we need one to complete so that another | |
3552 | can be created, or when waiting for the last ones to complete. It must wait for | |
3553 | the completion of one subprocess, empty the control block slot, and return a | |
3554 | pointer to the address chain. | |
3555 | ||
3556 | Arguments: none | |
3557 | Returns: pointer to the chain of addresses handled by the process; | |
3558 | NULL if no subprocess found - this is an unexpected error | |
3559 | */ | |
3560 | ||
3561 | static address_item * | |
3562 | par_wait(void) | |
3563 | { | |
3564 | int poffset, status; | |
3565 | address_item *addr, *addrlist; | |
3566 | pid_t pid; | |
3567 | ||
3568 | set_process_info("delivering %s: waiting for a remote delivery subprocess " | |
3569 | "to finish", message_id); | |
3570 | ||
3571 | /* Loop until either a subprocess completes, or there are no subprocesses in | |
3572 | existence - in which case give an error return. We cannot proceed just by | |
3573 | waiting for a completion, because a subprocess may have filled up its pipe, and | |
3574 | be waiting for it to be emptied. Therefore, if no processes have finished, we | |
3575 | wait for one of the pipes to acquire some data by calling select(), with a | |
3576 | timeout just in case. | |
3577 | ||
3578 | The simple approach is just to iterate after reading data from a ready pipe. | |
3579 | This leads to non-ideal behaviour when the subprocess has written its final Z | |
3580 | item, closed the pipe, and is in the process of exiting (the common case). A | |
3581 | call to waitpid() yields nothing completed, but select() shows the pipe ready - | |
3582 | reading it yields EOF, so you end up with busy-waiting until the subprocess has | |
3583 | actually finished. | |
3584 | ||
3585 | To avoid this, if all the data that is needed has been read from a subprocess | |
3586 | after select(), an explicit wait() for it is done. We know that all it is doing | |
3587 | is writing to the pipe and then exiting, so the wait should not be long. | |
3588 | ||
3589 | The non-blocking waitpid() is to some extent just insurance; if we could | |
3590 | reliably detect end-of-file on the pipe, we could always know when to do a | |
3591 | blocking wait() for a completed process. However, because some systems use | |
3592 | NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to | |
3593 | use code that functions without the need to recognize EOF. | |
3594 | ||
3595 | There's a double loop here just in case we end up with a process that is not in | |
3596 | the list of remote delivery processes. Something has obviously gone wrong if | |
3597 | this is the case. (For example, a process that is incorrectly left over from | |
3598 | routing or local deliveries might be found.) The damage can be minimized by | |
3599 | looping back and looking for another process. If there aren't any, the error | |
3600 | return will happen. */ | |
3601 | ||
3602 | for (;;) /* Normally we do not repeat this loop */ | |
3603 | { | |
3604 | while ((pid = waitpid(-1, &status, WNOHANG)) <= 0) | |
3605 | { | |
3606 | struct timeval tv; | |
3607 | fd_set select_pipes; | |
3608 | int maxpipe, readycount; | |
3609 | ||
3610 | /* A return value of -1 can mean several things. If errno != ECHILD, it | |
3611 | either means invalid options (which we discount), or that this process was | |
3612 | interrupted by a signal. Just loop to try the waitpid() again. | |
3613 | ||
3614 | If errno == ECHILD, waitpid() is telling us that there are no subprocesses | |
3615 | in existence. This should never happen, and is an unexpected error. | |
3616 | However, there is a nasty complication when running under Linux. If "strace | |
3617 | -f" is being used under Linux to trace this process and its children, | |
3618 | subprocesses are "stolen" from their parents and become the children of the | |
3619 | tracing process. A general wait such as the one we've just obeyed returns | |
3620 | as if there are no children while subprocesses are running. Once a | |
3621 | subprocess completes, it is restored to the parent, and waitpid(-1) finds | |
3622 | it. Thanks to Joachim Wieland for finding all this out and suggesting a | |
3623 | palliative. | |
3624 | ||
3625 | This does not happen using "truss" on Solaris, nor (I think) with other | |
3626 | tracing facilities on other OS. It seems to be specific to Linux. | |
3627 | ||
3628 | What we do to get round this is to use kill() to see if any of our | |
3629 | subprocesses are still in existence. If kill() gives an OK return, we know | |
3630 | it must be for one of our processes - it can't be for a re-use of the pid, | |
3631 | because if our process had finished, waitpid() would have found it. If any | |
3632 | of our subprocesses are in existence, we proceed to use select() as if | |
3633 | waitpid() had returned zero. I think this is safe. */ | |
3634 | ||
3635 | if (pid < 0) | |
3636 | { | |
3637 | if (errno != ECHILD) continue; /* Repeats the waitpid() */ | |
3638 | ||
3639 | DEBUG(D_deliver) | |
3640 | debug_printf("waitpid() returned -1/ECHILD: checking explicitly " | |
3641 | "for process existence\n"); | |
3642 | ||
3643 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3644 | { | |
3645 | if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0) | |
3646 | { | |
3647 | DEBUG(D_deliver) debug_printf("process %d still exists: assume " | |
3648 | "stolen by strace\n", (int)pid); | |
3649 | break; /* With poffset set */ | |
3650 | } | |
3651 | } | |
3652 | ||
3653 | if (poffset >= remote_max_parallel) | |
3654 | { | |
3655 | DEBUG(D_deliver) debug_printf("*** no delivery children found\n"); | |
3656 | return NULL; /* This is the error return */ | |
3657 | } | |
3658 | } | |
3659 | ||
3660 | /* A pid value greater than 0 breaks the "while" loop. A negative value has | |
3661 | been handled above. A return value of zero means that there is at least one | |
3662 | subprocess, but there are no completed subprocesses. See if any pipes are | |
3663 | ready with any data for reading. */ | |
3664 | ||
3665 | DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n"); | |
3666 | ||
3667 | maxpipe = 0; | |
3668 | FD_ZERO(&select_pipes); | |
3669 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3670 | { | |
3671 | if (parlist[poffset].pid != 0) | |
3672 | { | |
3673 | int fd = parlist[poffset].fd; | |
3674 | FD_SET(fd, &select_pipes); | |
3675 | if (fd > maxpipe) maxpipe = fd; | |
3676 | } | |
3677 | } | |
3678 | ||
3679 | /* Stick in a 60-second timeout, just in case. */ | |
3680 | ||
3681 | tv.tv_sec = 60; | |
3682 | tv.tv_usec = 0; | |
3683 | ||
3684 | readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes, | |
3685 | NULL, NULL, &tv); | |
3686 | ||
3687 | /* Scan through the pipes and read any that are ready; use the count | |
3688 | returned by select() to stop when there are no more. Select() can return | |
3689 | with no processes (e.g. if interrupted). This shouldn't matter. | |
3690 | ||
3691 | If par_read_pipe() returns TRUE, it means that either the terminating Z was | |
3692 | read, or there was a disaster. In either case, we are finished with this | |
3693 | process. Do an explicit wait() for the process and break the main loop if | |
3694 | it succeeds. | |
3695 | ||
3696 | It turns out that we have to deal with the case of an interrupted system | |
3697 | call, which can happen on some operating systems if the signal handling is | |
3698 | set up to do that by default. */ | |
3699 | ||
3700 | for (poffset = 0; | |
3701 | readycount > 0 && poffset < remote_max_parallel; | |
3702 | poffset++) | |
3703 | { | |
d6c82d7b JH |
3704 | if ( (pid = parlist[poffset].pid) != 0 |
3705 | && FD_ISSET(parlist[poffset].fd, &select_pipes) | |
3706 | ) | |
059ec3d9 PH |
3707 | { |
3708 | readycount--; | |
3709 | if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */ | |
3710 | { | |
3711 | for (;;) /* Loop for signals */ | |
3712 | { | |
3713 | pid_t endedpid = waitpid(pid, &status, 0); | |
3714 | if (endedpid == pid) goto PROCESS_DONE; | |
3715 | if (endedpid != (pid_t)(-1) || errno != EINTR) | |
3716 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return " | |
3717 | "%d (errno = %d) from waitpid() for process %d", | |
3718 | (int)endedpid, errno, (int)pid); | |
3719 | } | |
3720 | } | |
3721 | } | |
3722 | } | |
3723 | ||
3724 | /* Now go back and look for a completed subprocess again. */ | |
3725 | } | |
3726 | ||
3727 | /* A completed process was detected by the non-blocking waitpid(). Find the | |
3728 | data block that corresponds to this subprocess. */ | |
3729 | ||
3730 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3731 | if (pid == parlist[poffset].pid) break; | |
3732 | ||
3733 | /* Found the data block; this is a known remote delivery process. We don't | |
3734 | need to repeat the outer loop. This should be what normally happens. */ | |
3735 | ||
3736 | if (poffset < remote_max_parallel) break; | |
3737 | ||
3738 | /* This situation is an error, but it's probably better to carry on looking | |
3739 | for another process than to give up (as we used to do). */ | |
3740 | ||
3741 | log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote " | |
3742 | "transport process list", pid); | |
3743 | } /* End of the "for" loop */ | |
3744 | ||
3745 | /* Come here when all the data was completely read after a select(), and | |
3746 | the process in pid has been wait()ed for. */ | |
3747 | ||
3748 | PROCESS_DONE: | |
3749 | ||
3750 | DEBUG(D_deliver) | |
3751 | { | |
3752 | if (status == 0) | |
3753 | debug_printf("remote delivery process %d ended\n", (int)pid); | |
3754 | else | |
3755 | debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid, | |
3756 | status); | |
3757 | } | |
3758 | ||
3759 | set_process_info("delivering %s", message_id); | |
3760 | ||
3761 | /* Get the chain of processed addresses */ | |
3762 | ||
3763 | addrlist = parlist[poffset].addrlist; | |
3764 | ||
3765 | /* If the process did not finish cleanly, record an error and freeze (except | |
3766 | for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed, | |
3767 | in case the delivery did actually happen. */ | |
3768 | ||
3769 | if ((status & 0xffff) != 0) | |
3770 | { | |
3771 | uschar *msg; | |
3772 | int msb = (status >> 8) & 255; | |
3773 | int lsb = status & 255; | |
3774 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
3775 | ||
3776 | msg = string_sprintf("%s transport process returned non-zero status 0x%04x: " | |
3777 | "%s %d", | |
3778 | addrlist->transport->driver_name, | |
3779 | status, | |
3780 | (msb == 0)? "terminated by signal" : "exit code", | |
3781 | code); | |
3782 | ||
3783 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
3784 | addrlist->special_action = SPECIAL_FREEZE; | |
3785 | ||
d6c82d7b | 3786 | for (addr = addrlist; addr; addr = addr->next) |
059ec3d9 PH |
3787 | { |
3788 | addr->transport_return = DEFER; | |
3789 | addr->message = msg; | |
3790 | } | |
3791 | ||
3792 | remove_journal = FALSE; | |
3793 | } | |
3794 | ||
3795 | /* Else complete reading the pipe to get the result of the delivery, if all | |
3796 | the data has not yet been obtained. */ | |
3797 | ||
3798 | else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE); | |
3799 | ||
3800 | /* Put the data count and return path into globals, mark the data slot unused, | |
3801 | decrement the count of subprocesses, and return the address chain. */ | |
3802 | ||
3803 | transport_count = parlist[poffset].transport_count; | |
3804 | used_return_path = parlist[poffset].return_path; | |
3805 | parlist[poffset].pid = 0; | |
3806 | parcount--; | |
3807 | return addrlist; | |
3808 | } | |
3809 | ||
3810 | ||
3811 | ||
3812 | /************************************************* | |
3813 | * Wait for subprocesses and post-process * | |
3814 | *************************************************/ | |
3815 | ||
3816 | /* This function waits for subprocesses until the number that are still running | |
3817 | is below a given threshold. For each complete subprocess, the addresses are | |
3818 | post-processed. If we can't find a running process, there is some shambles. | |
3819 | Better not bomb out, as that might lead to multiple copies of the message. Just | |
3820 | log and proceed as if all done. | |
3821 | ||
3822 | Arguments: | |
3823 | max maximum number of subprocesses to leave running | |
3824 | fallback TRUE if processing fallback hosts | |
3825 | ||
3826 | Returns: nothing | |
3827 | */ | |
3828 | ||
3829 | static void | |
3830 | par_reduce(int max, BOOL fallback) | |
3831 | { | |
3832 | while (parcount > max) | |
3833 | { | |
3834 | address_item *doneaddr = par_wait(); | |
d6c82d7b | 3835 | if (!doneaddr) |
059ec3d9 PH |
3836 | { |
3837 | log_write(0, LOG_MAIN|LOG_PANIC, | |
3838 | "remote delivery process count got out of step"); | |
3839 | parcount = 0; | |
3840 | } | |
fa41615d JH |
3841 | else |
3842 | { | |
3843 | transport_instance * tp = doneaddr->transport; | |
3844 | if (tp->max_parallel) | |
3845 | enq_end(string_sprintf("tpt-serialize-%s", tp->name)); | |
3846 | ||
3847 | remote_post_process(doneaddr, LOG_MAIN, NULL, fallback); | |
3848 | } | |
059ec3d9 PH |
3849 | } |
3850 | } | |
3851 | ||
3852 | ||
3853 | ||
3854 | ||
1ac6b2e7 | 3855 | static void |
bd21a787 | 3856 | rmt_dlv_checked_write(int fd, char id, char subid, void * buf, int size) |
1ac6b2e7 | 3857 | { |
bd21a787 | 3858 | uschar writebuffer[PIPE_HEADER_SIZE + BIG_BUFFER_SIZE]; |
dc8091e7 JH |
3859 | int header_length; |
3860 | int ret; | |
bd21a787 WB |
3861 | |
3862 | /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */ | |
3863 | /* complain to log if someone tries with buffer sizes we can't handle*/ | |
3864 | ||
3865 | if (size > 99999) | |
d6c82d7b | 3866 | { |
94431adb | 3867 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
bd21a787 WB |
3868 | "Failed writing transport result to pipe: can't handle buffers > 99999 bytes. truncating!\n"); |
3869 | size = 99999; | |
d6c82d7b | 3870 | } |
bd21a787 WB |
3871 | |
3872 | /* to keep the write() atomic we build header in writebuffer and copy buf behind */ | |
3873 | /* two write() calls would increase the complexity of reading from pipe */ | |
3874 | ||
3875 | /* convert size to human readable string prepended by id and subid */ | |
b75960c8 | 3876 | header_length = snprintf(CS writebuffer, PIPE_HEADER_SIZE+1, "%c%c%05d", id, subid, size); |
bd21a787 | 3877 | if (header_length != PIPE_HEADER_SIZE) |
d6c82d7b | 3878 | { |
bd21a787 WB |
3879 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n"); |
3880 | writebuffer[0] = '\0'; | |
d6c82d7b | 3881 | } |
bd21a787 | 3882 | |
94431adb | 3883 | DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%d,final:%s\n", |
bd21a787 WB |
3884 | id, subid, size, writebuffer); |
3885 | ||
3886 | if (buf && size > 0) | |
3887 | memcpy(writebuffer + PIPE_HEADER_SIZE, buf, size); | |
3888 | ||
3889 | size += PIPE_HEADER_SIZE; | |
dc8091e7 | 3890 | if ((ret = write(fd, writebuffer, size)) != size) |
1ac6b2e7 JH |
3891 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed writing transport result to pipe: %s\n", |
3892 | ret == -1 ? strerror(errno) : "short write"); | |
3893 | } | |
3894 | ||
059ec3d9 PH |
3895 | /************************************************* |
3896 | * Do remote deliveries * | |
3897 | *************************************************/ | |
3898 | ||
3899 | /* This function is called to process the addresses in addr_remote. We must | |
3900 | pick off the queue all addresses that have the same transport, remote | |
3901 | destination, and errors address, and hand them to the transport in one go, | |
3902 | subject to some configured limitations. If this is a run to continue delivering | |
3903 | to an existing delivery channel, skip all but those addresses that can go to | |
3904 | that channel. The skipped addresses just get deferred. | |
3905 | ||
3906 | If mua_wrapper is set, all addresses must be able to be sent in a single | |
3907 | transaction. If not, this function yields FALSE. | |
3908 | ||
3909 | In Exim 4, remote deliveries are always done in separate processes, even | |
3910 | if remote_max_parallel = 1 or if there's only one delivery to do. The reason | |
3911 | is so that the base process can retain privilege. This makes the | |
3912 | implementation of fallback transports feasible (though not initially done.) | |
3913 | ||
3914 | We create up to the configured number of subprocesses, each of which passes | |
3915 | back the delivery state via a pipe. (However, when sending down an existing | |
3916 | connection, remote_max_parallel is forced to 1.) | |
3917 | ||
3918 | Arguments: | |
3919 | fallback TRUE if processing fallback hosts | |
3920 | ||
3921 | Returns: TRUE normally | |
3922 | FALSE if mua_wrapper is set and the addresses cannot all be sent | |
3923 | in one transaction | |
3924 | */ | |
3925 | ||
3926 | static BOOL | |
3927 | do_remote_deliveries(BOOL fallback) | |
3928 | { | |
3929 | int parmax; | |
3930 | int delivery_count; | |
3931 | int poffset; | |
3932 | ||
3933 | parcount = 0; /* Number of executing subprocesses */ | |
3934 | ||
3935 | /* When sending down an existing channel, only do one delivery at a time. | |
3936 | We use a local variable (parmax) to hold the maximum number of processes; | |
3937 | this gets reduced from remote_max_parallel if we can't create enough pipes. */ | |
3938 | ||
d6c82d7b | 3939 | if (continue_transport) remote_max_parallel = 1; |
059ec3d9 PH |
3940 | parmax = remote_max_parallel; |
3941 | ||
3942 | /* If the data for keeping a list of processes hasn't yet been | |
3943 | set up, do so. */ | |
3944 | ||
d6c82d7b | 3945 | if (!parlist) |
059ec3d9 PH |
3946 | { |
3947 | parlist = store_get(remote_max_parallel * sizeof(pardata)); | |
3948 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3949 | parlist[poffset].pid = 0; | |
3950 | } | |
3951 | ||
3952 | /* Now loop for each remote delivery */ | |
3953 | ||
d6c82d7b | 3954 | for (delivery_count = 0; addr_remote; delivery_count++) |
059ec3d9 PH |
3955 | { |
3956 | pid_t pid; | |
3957 | uid_t uid; | |
3958 | gid_t gid; | |
3959 | int pfd[2]; | |
3960 | int address_count = 1; | |
3961 | int address_count_max; | |
3962 | BOOL multi_domain; | |
3963 | BOOL use_initgroups; | |
3964 | BOOL pipe_done = FALSE; | |
3965 | transport_instance *tp; | |
3966 | address_item **anchor = &addr_remote; | |
3967 | address_item *addr = addr_remote; | |
3968 | address_item *last = addr; | |
3969 | address_item *next; | |
d6c82d7b | 3970 | uschar * panicmsg; |
fa41615d | 3971 | uschar * serialize_key = NULL; |
059ec3d9 PH |
3972 | |
3973 | /* Pull the first address right off the list. */ | |
3974 | ||
3975 | addr_remote = addr->next; | |
3976 | addr->next = NULL; | |
3977 | ||
3978 | DEBUG(D_deliver|D_transport) | |
3979 | debug_printf("--------> %s <--------\n", addr->address); | |
3980 | ||
3981 | /* If no transport has been set, there has been a big screw-up somewhere. */ | |
3982 | ||
d6c82d7b | 3983 | if (!(tp = addr->transport)) |
059ec3d9 PH |
3984 | { |
3985 | disable_logging = FALSE; /* Jic */ | |
d6c82d7b JH |
3986 | panicmsg = US"No transport set by router"; |
3987 | goto panic_continue; | |
059ec3d9 PH |
3988 | } |
3989 | ||
3990 | /* Check that this base address hasn't previously been delivered to this | |
3991 | transport. The check is necessary at this point to handle homonymic addresses | |
3992 | correctly in cases where the pattern of redirection changes between delivery | |
3993 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
3994 | time. */ | |
3995 | ||
c2c19e9d | 3996 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
3997 | |
3998 | /* Force failure if the message is too big. */ | |
3999 | ||
d6c82d7b | 4000 | if (tp->message_size_limit) |
059ec3d9 PH |
4001 | { |
4002 | int rc = check_message_size(tp, addr); | |
4003 | if (rc != OK) | |
4004 | { | |
4005 | addr->transport_return = rc; | |
4006 | remote_post_process(addr, LOG_MAIN, NULL, fallback); | |
4007 | continue; | |
4008 | } | |
4009 | } | |
4010 | ||
4011 | /* Get the flag which specifies whether the transport can handle different | |
506900af JH |
4012 | domains that nevertheless resolve to the same set of hosts. If it needs |
4013 | expanding, get variables set: $address_data, $domain_data, $localpart_data, | |
4014 | $host, $host_address, $host_port. */ | |
4015 | if (tp->expand_multi_domain) | |
4016 | deliver_set_expansions(addr); | |
4017 | ||
4018 | if (exp_bool(addr, US"transport", tp->name, D_transport, | |
4019 | US"multi_domain", tp->multi_domain, tp->expand_multi_domain, | |
4020 | &multi_domain) != OK) | |
4021 | { | |
4022 | deliver_set_expansions(NULL); | |
d6c82d7b JH |
4023 | panicmsg = addr->message; |
4024 | goto panic_continue; | |
506900af | 4025 | } |
059ec3d9 PH |
4026 | |
4027 | /* Get the maximum it can handle in one envelope, with zero meaning | |
4028 | unlimited, which is forced for the MUA wrapper case. */ | |
4029 | ||
4030 | address_count_max = tp->max_addresses; | |
4031 | if (address_count_max == 0 || mua_wrapper) address_count_max = 999999; | |
4032 | ||
4033 | ||
4034 | /************************************************************************/ | |
4035 | /***** This is slightly experimental code, but should be safe. *****/ | |
4036 | ||
4037 | /* The address_count_max value is the maximum number of addresses that the | |
4038 | transport can send in one envelope. However, the transport must be capable of | |
4039 | dealing with any number of addresses. If the number it gets exceeds its | |
4040 | envelope limitation, it must send multiple copies of the message. This can be | |
4041 | done over a single connection for SMTP, so uses less resources than making | |
4042 | multiple connections. On the other hand, if remote_max_parallel is greater | |
4043 | than one, it is perhaps a good idea to use parallel processing to move the | |
4044 | message faster, even if that results in multiple simultaneous connections to | |
4045 | the same host. | |
4046 | ||
4047 | How can we come to some compromise between these two ideals? What we do is to | |
4048 | limit the number of addresses passed to a single instance of a transport to | |
4049 | the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total | |
4050 | number of addresses routed to remote transports divided by | |
4051 | remote_max_parallel. For example, if the message has 100 remote recipients, | |
4052 | remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at | |
4053 | once. But if rcpt_max is 100, we could send up to 100. | |
4054 | ||
4055 | Of course, not all the remotely addresses in a message are going to go to the | |
4056 | same set of hosts (except in smarthost configurations), so this is just a | |
4057 | heuristic way of dividing up the work. | |
4058 | ||
4059 | Furthermore (1), because this may not be wanted in some cases, and also to | |
4060 | cope with really pathological cases, there is also a limit to the number of | |
4061 | messages that are sent over one connection. This is the same limit that is | |
4062 | used when sending several different messages over the same connection. | |
4063 | Continue_sequence is set when in this situation, to the number sent so | |
4064 | far, including this message. | |
4065 | ||
4066 | Furthermore (2), when somebody explicitly sets the maximum value to 1, it | |
4067 | is probably because they are using VERP, in which case they want to pass only | |
4068 | one address at a time to the transport, in order to be able to use | |
4069 | $local_part and $domain in constructing a new return path. We could test for | |
4070 | the use of these variables, but as it is so likely they will be used when the | |
4071 | maximum is 1, we don't bother. Just leave the value alone. */ | |
4072 | ||
d6c82d7b JH |
4073 | if ( address_count_max != 1 |
4074 | && address_count_max < remote_delivery_count/remote_max_parallel | |
4075 | ) | |
059ec3d9 PH |
4076 | { |
4077 | int new_max = remote_delivery_count/remote_max_parallel; | |
4078 | int message_max = tp->connection_max_messages; | |
4079 | if (connection_max_messages >= 0) message_max = connection_max_messages; | |
4080 | message_max -= continue_sequence - 1; | |
4081 | if (message_max > 0 && new_max > address_count_max * message_max) | |
4082 | new_max = address_count_max * message_max; | |
4083 | address_count_max = new_max; | |
4084 | } | |
4085 | ||
4086 | /************************************************************************/ | |
4087 | ||
4088 | ||
4089 | /* Pick off all addresses which have the same transport, errors address, | |
4090 | destination, and extra headers. In some cases they point to the same host | |
4091 | list, but we also need to check for identical host lists generated from | |
4092 | entirely different domains. The host list pointers can be NULL in the case | |
4093 | where the hosts are defined in the transport. There is also a configured | |
4094 | maximum limit of addresses that can be handled at once (see comments above | |
506900af JH |
4095 | for how it is computed). |
4096 | If the transport does not handle multiple domains, enforce that also, | |
4097 | and if it might need a per-address check for this, re-evaluate it. | |
4098 | */ | |
059ec3d9 | 4099 | |
d6c82d7b | 4100 | while ((next = *anchor) && address_count < address_count_max) |
059ec3d9 | 4101 | { |
506900af JH |
4102 | BOOL md; |
4103 | if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0) | |
4104 | && tp == next->transport | |
4105 | && same_hosts(next->host_list, addr->host_list) | |
d43cbe25 JH |
4106 | && same_strings(next->prop.errors_address, addr->prop.errors_address) |
4107 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
506900af | 4108 | && same_ugid(tp, next, addr) |
d43cbe25 JH |
4109 | && ( next->prop.remove_headers == addr->prop.remove_headers |
4110 | || ( next->prop.remove_headers | |
4111 | && addr->prop.remove_headers | |
4112 | && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0 | |
506900af JH |
4113 | ) ) |
4114 | && ( !multi_domain | |
4115 | || ( ( | |
4116 | !tp->expand_multi_domain || (deliver_set_expansions(next), 1), | |
4117 | exp_bool(addr, | |
4118 | US"transport", next->transport->name, D_transport, | |
4119 | US"multi_domain", next->transport->multi_domain, | |
4120 | next->transport->expand_multi_domain, &md) == OK | |
4121 | ) | |
4122 | && md | |
4123 | ) ) ) | |
059ec3d9 PH |
4124 | { |
4125 | *anchor = next->next; | |
4126 | next->next = NULL; | |
4127 | next->first = addr; /* remember top one (for retry processing) */ | |
4128 | last->next = next; | |
4129 | last = next; | |
4130 | address_count++; | |
4131 | } | |
4132 | else anchor = &(next->next); | |
506900af | 4133 | deliver_set_expansions(NULL); |
059ec3d9 PH |
4134 | } |
4135 | ||
4136 | /* If we are acting as an MUA wrapper, all addresses must go in a single | |
4137 | transaction. If not, put them back on the chain and yield FALSE. */ | |
4138 | ||
d6c82d7b | 4139 | if (mua_wrapper && addr_remote) |
059ec3d9 PH |
4140 | { |
4141 | last->next = addr_remote; | |
4142 | addr_remote = addr; | |
4143 | return FALSE; | |
4144 | } | |
4145 | ||
fa41615d JH |
4146 | /* If the transport is limited for parallellism, enforce that here. |
4147 | The hints DB entry is decremented in par_reduce(), when we reap the | |
4148 | transport process. */ | |
4149 | ||
3070ceee JH |
4150 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
4151 | if ((panicmsg = expand_string_message)) | |
fa41615d | 4152 | goto panic_continue; |
3070ceee JH |
4153 | else |
4154 | continue; /* Loop for the next set of addresses. */ | |
fa41615d | 4155 | |
059ec3d9 PH |
4156 | /* Set up the expansion variables for this set of addresses */ |
4157 | ||
4158 | deliver_set_expansions(addr); | |
4159 | ||
018c60d7 JH |
4160 | /* Ensure any transport-set auth info is fresh */ |
4161 | addr->authenticator = addr->auth_id = addr->auth_sndr = NULL; | |
4162 | ||
059ec3d9 PH |
4163 | /* Compute the return path, expanding a new one if required. The old one |
4164 | must be set first, as it might be referred to in the expansion. */ | |
4165 | ||
d6c82d7b | 4166 | if(addr->prop.errors_address) |
d43cbe25 | 4167 | return_path = addr->prop.errors_address; |
384152a6 | 4168 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 4169 | else if(addr->prop.srs_sender) |
d43cbe25 | 4170 | return_path = addr->prop.srs_sender; |
384152a6 TK |
4171 | #endif |
4172 | else | |
4173 | return_path = sender_address; | |
059ec3d9 | 4174 | |
d6c82d7b | 4175 | if (tp->return_path) |
059ec3d9 PH |
4176 | { |
4177 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b JH |
4178 | if (new_return_path) |
4179 | return_path = new_return_path; | |
4180 | else if (!expand_string_forcedfail) | |
059ec3d9 | 4181 | { |
d6c82d7b JH |
4182 | panicmsg = string_sprintf("Failed to expand return path \"%s\": %s", |
4183 | tp->return_path, expand_string_message); | |
fa41615d | 4184 | goto enq_continue; |
059ec3d9 | 4185 | } |
059ec3d9 PH |
4186 | } |
4187 | ||
929ba01c PH |
4188 | /* Find the uid, gid, and use_initgroups setting for this transport. Failure |
4189 | logs and sets up error messages, so we just post-process and continue with | |
4190 | the next address. */ | |
4191 | ||
4192 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) | |
4193 | { | |
d6c82d7b | 4194 | panicmsg = NULL; |
fa41615d | 4195 | goto enq_continue; |
929ba01c PH |
4196 | } |
4197 | ||
059ec3d9 PH |
4198 | /* If this transport has a setup function, call it now so that it gets |
4199 | run in this process and not in any subprocess. That way, the results of | |
929ba01c PH |
4200 | any setup that are retained by the transport can be reusable. One of the |
4201 | things the setup does is to set the fallback host lists in the addresses. | |
4202 | That is why it is called at this point, before the continue delivery | |
4203 | processing, because that might use the fallback hosts. */ | |
059ec3d9 | 4204 | |
d6c82d7b | 4205 | if (tp->setup) |
929ba01c | 4206 | (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL)); |
059ec3d9 PH |
4207 | |
4208 | /* If this is a run to continue delivery down an already-established | |
4209 | channel, check that this set of addresses matches the transport and | |
4210 | the channel. If it does not, defer the addresses. If a host list exists, | |
4211 | we must check that the continue host is on the list. Otherwise, the | |
4212 | host is set in the transport. */ | |
4213 | ||
4214 | continue_more = FALSE; /* In case got set for the last lot */ | |
d6c82d7b | 4215 | if (continue_transport) |
059ec3d9 PH |
4216 | { |
4217 | BOOL ok = Ustrcmp(continue_transport, tp->name) == 0; | |
d6c82d7b | 4218 | if (ok && addr->host_list) |
059ec3d9 PH |
4219 | { |
4220 | host_item *h; | |
4221 | ok = FALSE; | |
d6c82d7b | 4222 | for (h = addr->host_list; h; h = h->next) |
059ec3d9 PH |
4223 | if (Ustrcmp(h->name, continue_hostname) == 0) |
4224 | { ok = TRUE; break; } | |
059ec3d9 PH |
4225 | } |
4226 | ||
4227 | /* Addresses not suitable; defer or queue for fallback hosts (which | |
4228 | might be the continue host) and skip to next address. */ | |
4229 | ||
4230 | if (!ok) | |
4231 | { | |
4232 | DEBUG(D_deliver) debug_printf("not suitable for continue_transport\n"); | |
fa41615d | 4233 | if (serialize_key) enq_end(serialize_key); |
059ec3d9 | 4234 | |
d6c82d7b | 4235 | if (addr->fallback_hosts && !fallback) |
059ec3d9 | 4236 | { |
fa41615d | 4237 | for (next = addr; ; next = next->next) |
059ec3d9 PH |
4238 | { |
4239 | next->host_list = next->fallback_hosts; | |
4240 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address); | |
d6c82d7b | 4241 | if (!next->next) break; |
059ec3d9 PH |
4242 | } |
4243 | next->next = addr_fallback; | |
4244 | addr_fallback = addr; | |
4245 | } | |
4246 | ||
77560253 | 4247 | else if (next) |
3070ceee JH |
4248 | { |
4249 | while (next->next) next = next->next; | |
4250 | next->next = addr_defer; | |
4251 | addr_defer = addr; | |
4252 | } | |
059ec3d9 PH |
4253 | |
4254 | continue; | |
4255 | } | |
4256 | ||
4257 | /* Set a flag indicating whether there are further addresses that list | |
4258 | the continued host. This tells the transport to leave the channel open, | |
4259 | but not to pass it to another delivery process. */ | |
4260 | ||
d6c82d7b | 4261 | for (next = addr_remote; next; next = next->next) |
059ec3d9 PH |
4262 | { |
4263 | host_item *h; | |
d6c82d7b | 4264 | for (h = next->host_list; h; h = h->next) |
059ec3d9 PH |
4265 | if (Ustrcmp(h->name, continue_hostname) == 0) |
4266 | { continue_more = TRUE; break; } | |
059ec3d9 PH |
4267 | } |
4268 | } | |
4269 | ||
4270 | /* The transports set up the process info themselves as they may connect | |
4271 | to more than one remote machine. They also have to set up the filter | |
4272 | arguments, if required, so that the host name and address are available | |
4273 | for expansion. */ | |
4274 | ||
4275 | transport_filter_argv = NULL; | |
4276 | ||
059ec3d9 PH |
4277 | /* Create the pipe for inter-process communication. If pipe creation |
4278 | fails, it is probably because the value of remote_max_parallel is so | |
4279 | large that too many file descriptors for pipes have been created. Arrange | |
4280 | to wait for a process to finish, and then try again. If we still can't | |
4281 | create a pipe when all processes have finished, break the retry loop. */ | |
4282 | ||
4283 | while (!pipe_done) | |
4284 | { | |
4285 | if (pipe(pfd) == 0) pipe_done = TRUE; | |
4286 | else if (parcount > 0) parmax = parcount; | |
4287 | else break; | |
4288 | ||
4289 | /* We need to make the reading end of the pipe non-blocking. There are | |
4290 | two different options for this. Exim is cunningly (I hope!) coded so | |
4291 | that it can use either of them, though it prefers O_NONBLOCK, which | |
4292 | distinguishes between EOF and no-more-data. */ | |
4293 | ||
a7538db1 | 4294 | #ifdef O_NONBLOCK |
ff790e47 | 4295 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK); |
a7538db1 | 4296 | #else |
ff790e47 | 4297 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY); |
a7538db1 | 4298 | #endif |
059ec3d9 PH |
4299 | |
4300 | /* If the maximum number of subprocesses already exist, wait for a process | |
4301 | to finish. If we ran out of file descriptors, parmax will have been reduced | |
4302 | from its initial value of remote_max_parallel. */ | |
4303 | ||
4304 | par_reduce(parmax - 1, fallback); | |
4305 | } | |
4306 | ||
4307 | /* If we failed to create a pipe and there were no processes to wait | |
4308 | for, we have to give up on this one. Do this outside the above loop | |
4309 | so that we can continue the main loop. */ | |
4310 | ||
4311 | if (!pipe_done) | |
4312 | { | |
d6c82d7b | 4313 | panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno)); |
fa41615d | 4314 | goto enq_continue; |
059ec3d9 PH |
4315 | } |
4316 | ||
4317 | /* Find a free slot in the pardata list. Must do this after the possible | |
4318 | waiting for processes to finish, because a terminating process will free | |
4319 | up a slot. */ | |
4320 | ||
4321 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
d6c82d7b JH |
4322 | if (parlist[poffset].pid == 0) |
4323 | break; | |
059ec3d9 PH |
4324 | |
4325 | /* If there isn't one, there has been a horrible disaster. */ | |
4326 | ||
4327 | if (poffset >= remote_max_parallel) | |
4328 | { | |
f1e894f3 PH |
4329 | (void)close(pfd[pipe_write]); |
4330 | (void)close(pfd[pipe_read]); | |
d6c82d7b | 4331 | panicmsg = US"Unexpectedly no free subprocess slot"; |
fa41615d | 4332 | goto enq_continue; |
059ec3d9 PH |
4333 | } |
4334 | ||
4335 | /* Now fork a subprocess to do the remote delivery, but before doing so, | |
4336 | ensure that any cached resourses are released so as not to interfere with | |
4337 | what happens in the subprocess. */ | |
4338 | ||
4339 | search_tidyup(); | |
4340 | ||
4341 | if ((pid = fork()) == 0) | |
4342 | { | |
4343 | int fd = pfd[pipe_write]; | |
4344 | host_item *h; | |
4345 | ||
2a47f028 JH |
4346 | /* Setting this global in the subprocess means we need never clear it */ |
4347 | transport_name = tp->name; | |
059ec3d9 | 4348 | |
2a47f028 | 4349 | /* There are weird circumstances in which logging is disabled */ |
059ec3d9 PH |
4350 | disable_logging = tp->disable_logging; |
4351 | ||
4352 | /* Show pids on debug output if parallelism possible */ | |
4353 | ||
d6c82d7b | 4354 | if (parmax > 1 && (parcount > 0 || addr_remote)) |
059ec3d9 PH |
4355 | { |
4356 | DEBUG(D_any|D_v) debug_selector |= D_pid; | |
4357 | DEBUG(D_deliver) debug_printf("Remote delivery process started\n"); | |
4358 | } | |
4359 | ||
4360 | /* Reset the random number generator, so different processes don't all | |
4361 | have the same sequence. In the test harness we want different, but | |
4362 | predictable settings for each delivery process, so do something explicit | |
4363 | here rather they rely on the fixed reset in the random number function. */ | |
4364 | ||
4365 | random_seed = running_in_test_harness? 42 + 2*delivery_count : 0; | |
4366 | ||
4367 | /* Set close-on-exec on the pipe so that it doesn't get passed on to | |
4368 | a new process that may be forked to do another delivery down the same | |
4369 | SMTP connection. */ | |
4370 | ||
ff790e47 | 4371 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
059ec3d9 PH |
4372 | |
4373 | /* Close open file descriptors for the pipes of other processes | |
4374 | that are running in parallel. */ | |
4375 | ||
4376 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
f1e894f3 | 4377 | if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd); |
059ec3d9 PH |
4378 | |
4379 | /* This process has inherited a copy of the file descriptor | |
4380 | for the data file, but its file pointer is shared with all the | |
4381 | other processes running in parallel. Therefore, we have to re-open | |
4382 | the file in order to get a new file descriptor with its own | |
4383 | file pointer. We don't need to lock it, as the lock is held by | |
4384 | the parent process. There doesn't seem to be any way of doing | |
4385 | a dup-with-new-file-pointer. */ | |
4386 | ||
f1e894f3 | 4387 | (void)close(deliver_datafile); |
41313d92 JH |
4388 | { |
4389 | uschar * fname = spool_fname(US"input", message_subdir, message_id, US"-D"); | |
059ec3d9 | 4390 | |
41313d92 | 4391 | if ((deliver_datafile = Uopen(fname, O_RDWR | O_APPEND, 0)) < 0) |
059ec3d9 | 4392 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote " |
41313d92 JH |
4393 | "parallel delivery: %s", fname, strerror(errno)); |
4394 | } | |
059ec3d9 PH |
4395 | |
4396 | /* Set the close-on-exec flag */ | |
4397 | ||
ff790e47 | 4398 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
059ec3d9 PH |
4399 | FD_CLOEXEC); |
4400 | ||
4401 | /* Set the uid/gid of this process; bombs out on failure. */ | |
4402 | ||
4403 | exim_setugid(uid, gid, use_initgroups, | |
4404 | string_sprintf("remote delivery to %s with transport=%s", | |
4405 | addr->address, tp->name)); | |
4406 | ||
4407 | /* Close the unwanted half of this process' pipe, set the process state, | |
4408 | and run the transport. Afterwards, transport_count will contain the number | |
4409 | of bytes written. */ | |
4410 | ||
f1e894f3 | 4411 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
4412 | set_process_info("delivering %s using %s", message_id, tp->name); |
4413 | debug_print_string(tp->debug_string); | |
4414 | if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr); | |
4415 | ||
4416 | set_process_info("delivering %s (just run %s for %s%s in subprocess)", | |
d6c82d7b | 4417 | message_id, tp->name, addr->address, addr->next ? ", ..." : ""); |
059ec3d9 PH |
4418 | |
4419 | /* Ensure any cached resources that we used are now released */ | |
4420 | ||
4421 | search_tidyup(); | |
4422 | ||
4423 | /* Pass the result back down the pipe. This is a lot more information | |
4424 | than is needed for a local delivery. We have to send back the error | |
4425 | status for each address, the usability status for each host that is | |
4426 | flagged as unusable, and all the retry items. When TLS is in use, we | |
4427 | send also the cipher and peerdn information. Each type of information | |
4428 | is flagged by an identifying byte, and is then in a fixed format (with | |
4429 | strings terminated by zeros), and there is a final terminator at the | |
4430 | end. The host information and retry information is all attached to | |
4431 | the first address, so that gets sent at the start. */ | |
4432 | ||
4433 | /* Host unusability information: for most success cases this will | |
4434 | be null. */ | |
4435 | ||
d6c82d7b | 4436 | for (h = addr->host_list; h; h = h->next) |
059ec3d9 | 4437 | { |
d6c82d7b | 4438 | if (!h->address || h->status < hstatus_unusable) continue; |
bd21a787 WB |
4439 | sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address); |
4440 | rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3); | |
059ec3d9 PH |
4441 | } |
4442 | ||
4443 | /* The number of bytes written. This is the same for each address. Even | |
4444 | if we sent several copies of the message down the same connection, the | |
4445 | size of each one is the same, and it's that value we have got because | |
4446 | transport_count gets reset before calling transport_write_message(). */ | |
4447 | ||
bd21a787 WB |
4448 | memcpy(big_buffer, &transport_count, sizeof(transport_count)); |
4449 | rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count)); | |
059ec3d9 | 4450 | |
6f123593 JH |
4451 | /* Information about what happened to each address. Four item types are |
4452 | used: an optional 'X' item first, for TLS information, then an optional "C" | |
4453 | item for any client-auth info followed by 'R' items for any retry settings, | |
4454 | and finally an 'A' item for the remaining data. */ | |
059ec3d9 | 4455 | |
d6c82d7b | 4456 | for(; addr; addr = addr->next) |
059ec3d9 PH |
4457 | { |
4458 | uschar *ptr; | |
4459 | retry_item *r; | |
4460 | ||
4461 | /* The certificate verification status goes into the flags */ | |
817d9f57 | 4462 | if (tls_out.certificate_verified) setflag(addr, af_cert_verified); |
a0a2d1ee | 4463 | #ifdef EXPERIMENTAL_DANE |
53a7196b | 4464 | if (tls_out.dane_verified) setflag(addr, af_dane_verified); |
a0a2d1ee | 4465 | #endif |
059ec3d9 PH |
4466 | |
4467 | /* Use an X item only if there's something to send */ | |
a7538db1 | 4468 | #ifdef SUPPORT_TLS |
9d1c15ef | 4469 | if (addr->cipher) |
059ec3d9 | 4470 | { |
e6d2a989 | 4471 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1; |
9d1c15ef JH |
4472 | if (!addr->peerdn) |
4473 | *ptr++ = 0; | |
4474 | else | |
059ec3d9 | 4475 | { |
e6d2a989 JH |
4476 | ptr += sprintf(CS ptr, "%.512s", addr->peerdn); |
4477 | ptr++; | |
059ec3d9 | 4478 | } |
9d1c15ef | 4479 | |
bd21a787 | 4480 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); |
059ec3d9 | 4481 | } |
9d1c15ef JH |
4482 | if (addr->peercert) |
4483 | { | |
4484 | ptr = big_buffer; | |
9d1c15ef JH |
4485 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert)) |
4486 | while(*ptr++); | |
4487 | else | |
4488 | *ptr++ = 0; | |
bd21a787 | 4489 | rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer); |
9d1c15ef JH |
4490 | } |
4491 | if (addr->ourcert) | |
4492 | { | |
4493 | ptr = big_buffer; | |
9d1c15ef JH |
4494 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert)) |
4495 | while(*ptr++); | |
4496 | else | |
4497 | *ptr++ = 0; | |
bd21a787 | 4498 | rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer); |
9d1c15ef | 4499 | } |
a7538db1 | 4500 | # ifndef DISABLE_OCSP |
018058b2 JH |
4501 | if (addr->ocsp > OCSP_NOT_REQ) |
4502 | { | |
e6d2a989 | 4503 | ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1; |
bd21a787 | 4504 | rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer); |
018058b2 | 4505 | } |
a7538db1 JH |
4506 | # endif |
4507 | #endif /*SUPPORT_TLS*/ | |
059ec3d9 | 4508 | |
6f123593 JH |
4509 | if (client_authenticator) |
4510 | { | |
e6d2a989 | 4511 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1; |
bd21a787 | 4512 | rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer); |
6f123593 JH |
4513 | } |
4514 | if (client_authenticated_id) | |
4515 | { | |
e6d2a989 | 4516 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1; |
bd21a787 | 4517 | rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer); |
6f123593 | 4518 | } |
c8e2fc1e JH |
4519 | if (client_authenticated_sender) |
4520 | { | |
e6d2a989 | 4521 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1; |
bd21a787 | 4522 | rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer); |
c8e2fc1e | 4523 | } |
6f123593 | 4524 | |
a7538db1 | 4525 | #ifndef DISABLE_PRDR |
783b385f | 4526 | if (addr->flags & af_prdr_used) |
bd21a787 | 4527 | rmt_dlv_checked_write(fd, 'P', '0', NULL, 0); |
b75960c8 | 4528 | #endif |
fd98a5c6 | 4529 | |
bd21a787 WB |
4530 | memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware)); |
4531 | rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware)); | |
6c1c3d1d | 4532 | DEBUG(D_deliver) debug_printf("DSN write: addr->dsn_aware = %d\n", addr->dsn_aware); |
6c1c3d1d | 4533 | |
059ec3d9 PH |
4534 | /* Retry information: for most success cases this will be null. */ |
4535 | ||
d6c82d7b | 4536 | for (r = addr->retries; r; r = r->next) |
059ec3d9 | 4537 | { |
bd21a787 | 4538 | sprintf(CS big_buffer, "%c%.500s", r->flags, r->key); |
059ec3d9 PH |
4539 | ptr = big_buffer + Ustrlen(big_buffer+2) + 3; |
4540 | memcpy(ptr, &(r->basic_errno), sizeof(r->basic_errno)); | |
4541 | ptr += sizeof(r->basic_errno); | |
4542 | memcpy(ptr, &(r->more_errno), sizeof(r->more_errno)); | |
4543 | ptr += sizeof(r->more_errno); | |
d6c82d7b | 4544 | if (!r->message) *ptr++ = 0; else |
059ec3d9 PH |
4545 | { |
4546 | sprintf(CS ptr, "%.512s", r->message); | |
4547 | while(*ptr++); | |
4548 | } | |
bd21a787 | 4549 | rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4550 | } |
4551 | ||
e6d2a989 JH |
4552 | #ifdef SUPPORT_SOCKS |
4553 | if (LOGGING(proxy) && proxy_session) | |
4554 | { | |
4555 | ptr = big_buffer; | |
4556 | if (proxy_local_address) | |
4557 | { | |
4558 | DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address); | |
4559 | ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1; | |
4560 | DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port); | |
4561 | memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port)); | |
4562 | ptr += sizeof(proxy_local_port); | |
4563 | } | |
4564 | else | |
4565 | *ptr++ = '\0'; | |
4566 | rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer); | |
4567 | } | |
4568 | #endif | |
4569 | ||
895fbaf2 JH |
4570 | #ifdef EXPERIMENTAL_DSN_INFO |
4571 | /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */ | |
4572 | if (addr->smtp_greeting) | |
4573 | { | |
895fbaf2 | 4574 | DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting); |
e6d2a989 | 4575 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1; |
895fbaf2 JH |
4576 | if (addr->helo_response) |
4577 | { | |
4578 | DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response); | |
e6d2a989 | 4579 | ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1; |
895fbaf2 JH |
4580 | } |
4581 | else | |
4582 | *ptr++ = '\0'; | |
4583 | rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer); | |
4584 | } | |
4585 | #endif | |
4586 | ||
4587 | /* The rest of the information goes in an 'A0' item. */ | |
059ec3d9 | 4588 | |
e6d2a989 | 4589 | sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action); |
895fbaf2 | 4590 | ptr = big_buffer + 2; |
059ec3d9 PH |
4591 | memcpy(ptr, &(addr->basic_errno), sizeof(addr->basic_errno)); |
4592 | ptr += sizeof(addr->basic_errno); | |
4593 | memcpy(ptr, &(addr->more_errno), sizeof(addr->more_errno)); | |
4594 | ptr += sizeof(addr->more_errno); | |
4595 | memcpy(ptr, &(addr->flags), sizeof(addr->flags)); | |
4596 | ptr += sizeof(addr->flags); | |
4597 | ||
d6c82d7b | 4598 | if (!addr->message) *ptr++ = 0; else |
e6d2a989 | 4599 | ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1; |
059ec3d9 | 4600 | |
d6c82d7b | 4601 | if (!addr->user_message) *ptr++ = 0; else |
e6d2a989 | 4602 | ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1; |
059ec3d9 | 4603 | |
d6c82d7b | 4604 | if (!addr->host_used) *ptr++ = 0; else |
059ec3d9 | 4605 | { |
e6d2a989 JH |
4606 | ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1; |
4607 | ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1; | |
059ec3d9 PH |
4608 | memcpy(ptr, &(addr->host_used->port), sizeof(addr->host_used->port)); |
4609 | ptr += sizeof(addr->host_used->port); | |
783b385f JH |
4610 | |
4611 | /* DNS lookup status */ | |
4612 | *ptr++ = addr->host_used->dnssec==DS_YES ? '2' | |
4613 | : addr->host_used->dnssec==DS_NO ? '1' : '0'; | |
4614 | ||
059ec3d9 | 4615 | } |
bd21a787 | 4616 | rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4617 | } |
4618 | ||
aeaf5db3 | 4619 | /* Local interface address/port */ |
895fbaf2 JH |
4620 | #ifdef EXPERIMENTAL_DSN_INFO |
4621 | if (sending_ip_address) | |
4622 | #else | |
6c6d6e48 | 4623 | if (LOGGING(incoming_interface) && sending_ip_address) |
895fbaf2 | 4624 | #endif |
aeaf5db3 | 4625 | { |
e6d2a989 JH |
4626 | uschar * ptr; |
4627 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1; | |
4628 | ptr += sprintf(CS ptr, "%d", sending_port) + 1; | |
aeaf5db3 JH |
4629 | rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer); |
4630 | } | |
4631 | ||
059ec3d9 PH |
4632 | /* Add termination flag, close the pipe, and that's it. The character |
4633 | after 'Z' indicates whether continue_transport is now NULL or not. | |
4634 | A change from non-NULL to NULL indicates a problem with a continuing | |
4635 | connection. */ | |
4636 | ||
d6c82d7b | 4637 | big_buffer[0] = continue_transport ? '1' : '0'; |
bd21a787 | 4638 | rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1); |
f1e894f3 | 4639 | (void)close(fd); |
059ec3d9 PH |
4640 | exit(EXIT_SUCCESS); |
4641 | } | |
4642 | ||
4643 | /* Back in the mainline: close the unwanted half of the pipe. */ | |
4644 | ||
f1e894f3 | 4645 | (void)close(pfd[pipe_write]); |
059ec3d9 PH |
4646 | |
4647 | /* Fork failed; defer with error message */ | |
4648 | ||
4649 | if (pid < 0) | |
4650 | { | |
f1e894f3 | 4651 | (void)close(pfd[pipe_read]); |
d6c82d7b JH |
4652 | panicmsg = string_sprintf("fork failed for remote delivery to %s: %s", |
4653 | addr->domain, strerror(errno)); | |
fa41615d | 4654 | goto enq_continue; |
059ec3d9 PH |
4655 | } |
4656 | ||
4657 | /* Fork succeeded; increment the count, and remember relevant data for | |
4658 | when the process finishes. */ | |
4659 | ||
4660 | parcount++; | |
4661 | parlist[poffset].addrlist = parlist[poffset].addr = addr; | |
4662 | parlist[poffset].pid = pid; | |
4663 | parlist[poffset].fd = pfd[pipe_read]; | |
4664 | parlist[poffset].done = FALSE; | |
4665 | parlist[poffset].msg = NULL; | |
4666 | parlist[poffset].return_path = return_path; | |
4667 | ||
4668 | /* If the process we've just started is sending a message down an existing | |
4669 | channel, wait for it now. This ensures that only one such process runs at | |
4670 | once, whatever the value of remote_max parallel. Otherwise, we might try to | |
4671 | send two or more messages simultaneously down the same channel. This could | |
4672 | happen if there are different domains that include the same host in otherwise | |
4673 | different host lists. | |
4674 | ||
4675 | Also, if the transport closes down the channel, this information gets back | |
4676 | (continue_transport gets set to NULL) before we consider any other addresses | |
4677 | in this message. */ | |
4678 | ||
d6c82d7b | 4679 | if (continue_transport) par_reduce(0, fallback); |
059ec3d9 PH |
4680 | |
4681 | /* Otherwise, if we are running in the test harness, wait a bit, to let the | |
4682 | newly created process get going before we create another process. This should | |
4683 | ensure repeatability in the tests. We only need to wait a tad. */ | |
4684 | ||
4685 | else if (running_in_test_harness) millisleep(500); | |
d6c82d7b JH |
4686 | |
4687 | continue; | |
4688 | ||
fa41615d JH |
4689 | enq_continue: |
4690 | if (serialize_key) enq_end(serialize_key); | |
d6c82d7b JH |
4691 | panic_continue: |
4692 | remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback); | |
4693 | continue; | |
059ec3d9 PH |
4694 | } |
4695 | ||
4696 | /* Reached the end of the list of addresses. Wait for all the subprocesses that | |
4697 | are still running and post-process their addresses. */ | |
4698 | ||
4699 | par_reduce(0, fallback); | |
4700 | return TRUE; | |
4701 | } | |
4702 | ||
4703 | ||
4704 | ||
4705 | ||
4706 | /************************************************* | |
4707 | * Split an address into local part and domain * | |
4708 | *************************************************/ | |
4709 | ||
4710 | /* This function initializes an address for routing by splitting it up into a | |
4711 | local part and a domain. The local part is set up twice - once in its original | |
4712 | casing, and once in lower case, and it is dequoted. We also do the "percent | |
4713 | hack" for configured domains. This may lead to a DEFER result if a lookup | |
4714 | defers. When a percent-hacking takes place, we insert a copy of the original | |
4715 | address as a new parent of this address, as if we have had a redirection. | |
4716 | ||
4717 | Argument: | |
4718 | addr points to an addr_item block containing the address | |
4719 | ||
4720 | Returns: OK | |
4721 | DEFER - could not determine if domain is %-hackable | |
4722 | */ | |
4723 | ||
4724 | int | |
4725 | deliver_split_address(address_item *addr) | |
4726 | { | |
4727 | uschar *address = addr->address; | |
4728 | uschar *domain = Ustrrchr(address, '@'); | |
4729 | uschar *t; | |
4730 | int len = domain - address; | |
4731 | ||
4732 | addr->domain = string_copylc(domain+1); /* Domains are always caseless */ | |
4733 | ||
4734 | /* The implication in the RFCs (though I can't say I've seen it spelled out | |
4735 | explicitly) is that quoting should be removed from local parts at the point | |
4736 | where they are locally interpreted. [The new draft "821" is more explicit on | |
4737 | this, Jan 1999.] We know the syntax is valid, so this can be done by simply | |
4738 | removing quoting backslashes and any unquoted doublequotes. */ | |
4739 | ||
4740 | t = addr->cc_local_part = store_get(len+1); | |
4741 | while(len-- > 0) | |
4742 | { | |
4743 | register int c = *address++; | |
4744 | if (c == '\"') continue; | |
4745 | if (c == '\\') | |
4746 | { | |
4747 | *t++ = *address++; | |
4748 | len--; | |
4749 | } | |
4750 | else *t++ = c; | |
4751 | } | |
4752 | *t = 0; | |
4753 | ||
4754 | /* We do the percent hack only for those domains that are listed in | |
4755 | percent_hack_domains. A loop is required, to copy with multiple %-hacks. */ | |
4756 | ||
d6c82d7b | 4757 | if (percent_hack_domains) |
059ec3d9 PH |
4758 | { |
4759 | int rc; | |
4760 | uschar *new_address = NULL; | |
4761 | uschar *local_part = addr->cc_local_part; | |
4762 | ||
4763 | deliver_domain = addr->domain; /* set $domain */ | |
4764 | ||
d6c82d7b JH |
4765 | while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0, |
4766 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) | |
4767 | == OK | |
4768 | && (t = Ustrrchr(local_part, '%')) != NULL | |
4769 | ) | |
059ec3d9 PH |
4770 | { |
4771 | new_address = string_copy(local_part); | |
4772 | new_address[t - local_part] = '@'; | |
4773 | deliver_domain = string_copylc(t+1); | |
4774 | local_part = string_copyn(local_part, t - local_part); | |
4775 | } | |
4776 | ||
4777 | if (rc == DEFER) return DEFER; /* lookup deferred */ | |
4778 | ||
4779 | /* If hackery happened, set up new parent and alter the current address. */ | |
4780 | ||
d6c82d7b | 4781 | if (new_address) |
059ec3d9 PH |
4782 | { |
4783 | address_item *new_parent = store_get(sizeof(address_item)); | |
4784 | *new_parent = *addr; | |
4785 | addr->parent = new_parent; | |
4786 | addr->address = new_address; | |
4787 | addr->unique = string_copy(new_address); | |
4788 | addr->domain = deliver_domain; | |
4789 | addr->cc_local_part = local_part; | |
4790 | DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n", | |
4791 | addr->address); | |
4792 | } | |
4793 | } | |
4794 | ||
4795 | /* Create the lowercased version of the final local part, and make that the | |
4796 | default one to be used. */ | |
4797 | ||
4798 | addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part); | |
4799 | return OK; | |
4800 | } | |
4801 | ||
4802 | ||
4803 | ||
4804 | ||
4805 | /************************************************* | |
4806 | * Get next error message text * | |
4807 | *************************************************/ | |
4808 | ||
4809 | /* If f is not NULL, read the next "paragraph", from a customized error message | |
4810 | text file, terminated by a line containing ****, and expand it. | |
4811 | ||
4812 | Arguments: | |
4813 | f NULL or a file to read from | |
4814 | which string indicating which string (for errors) | |
4815 | ||
4816 | Returns: NULL or an expanded string | |
4817 | */ | |
4818 | ||
4819 | static uschar * | |
4820 | next_emf(FILE *f, uschar *which) | |
4821 | { | |
4822 | int size = 256; | |
4823 | int ptr = 0; | |
4824 | uschar *para, *yield; | |
4825 | uschar buffer[256]; | |
4826 | ||
d6c82d7b | 4827 | if (!f) return NULL; |
059ec3d9 | 4828 | |
d6c82d7b JH |
4829 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
4830 | return NULL; | |
059ec3d9 PH |
4831 | |
4832 | para = store_get(size); | |
4833 | for (;;) | |
4834 | { | |
c2f669a4 | 4835 | para = string_cat(para, &size, &ptr, buffer); |
d6c82d7b JH |
4836 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
4837 | break; | |
059ec3d9 PH |
4838 | } |
4839 | para[ptr] = 0; | |
4840 | ||
d6c82d7b JH |
4841 | if ((yield = expand_string(para))) |
4842 | return yield; | |
059ec3d9 PH |
4843 | |
4844 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from " | |
4845 | "bounce_message_file or warn_message_file (%s): %s", which, | |
4846 | expand_string_message); | |
4847 | return NULL; | |
4848 | } | |
4849 | ||
4850 | ||
4851 | ||
4852 | ||
4853 | /************************************************* | |
4854 | * Close down a passed transport channel * | |
4855 | *************************************************/ | |
4856 | ||
4857 | /* This function is called when a passed transport channel cannot be used. | |
4858 | It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED | |
4859 | so that the function call can be the argument of a "return" statement. | |
4860 | ||
4861 | Arguments: None | |
4862 | Returns: DELIVER_NOT_ATTEMPTED | |
4863 | */ | |
4864 | ||
4865 | static int | |
4866 | continue_closedown(void) | |
4867 | { | |
d6c82d7b | 4868 | if (continue_transport) |
059ec3d9 PH |
4869 | { |
4870 | transport_instance *t; | |
d6c82d7b | 4871 | for (t = transports; t; t = t->next) |
059ec3d9 PH |
4872 | if (Ustrcmp(t->name, continue_transport) == 0) |
4873 | { | |
d6c82d7b | 4874 | if (t->info->closedown) (t->info->closedown)(t); |
059ec3d9 PH |
4875 | break; |
4876 | } | |
059ec3d9 PH |
4877 | } |
4878 | return DELIVER_NOT_ATTEMPTED; | |
4879 | } | |
4880 | ||
4881 | ||
4882 | ||
4883 | ||
4884 | /************************************************* | |
4885 | * Print address information * | |
4886 | *************************************************/ | |
4887 | ||
4888 | /* This function is called to output an address, or information about an | |
4889 | address, for bounce or defer messages. If the hide_child flag is set, all we | |
4890 | output is the original ancestor address. | |
4891 | ||
4892 | Arguments: | |
4893 | addr points to the address | |
4894 | f the FILE to print to | |
4895 | si an initial string | |
4896 | sc a continuation string for before "generated" | |
4897 | se an end string | |
4898 | ||
4899 | Returns: TRUE if the address is not hidden | |
4900 | */ | |
4901 | ||
4902 | static BOOL | |
4903 | print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc, | |
4904 | uschar *se) | |
4905 | { | |
4906 | BOOL yield = TRUE; | |
4907 | uschar *printed = US""; | |
4908 | address_item *ancestor = addr; | |
d6c82d7b | 4909 | while (ancestor->parent) ancestor = ancestor->parent; |
059ec3d9 PH |
4910 | |
4911 | fprintf(f, "%s", CS si); | |
4912 | ||
d6c82d7b | 4913 | if (addr->parent && testflag(addr, af_hide_child)) |
059ec3d9 PH |
4914 | { |
4915 | printed = US"an undisclosed address"; | |
4916 | yield = FALSE; | |
4917 | } | |
d6c82d7b | 4918 | else if (!testflag(addr, af_pfr) || !addr->parent) |
059ec3d9 PH |
4919 | printed = addr->address; |
4920 | ||
4921 | else | |
4922 | { | |
4923 | uschar *s = addr->address; | |
4924 | uschar *ss; | |
4925 | ||
4926 | if (addr->address[0] == '>') { ss = US"mail"; s++; } | |
4927 | else if (addr->address[0] == '|') ss = US"pipe"; | |
4928 | else ss = US"save"; | |
4929 | ||
4930 | fprintf(f, "%s to %s%sgenerated by ", ss, s, sc); | |
4931 | printed = addr->parent->address; | |
4932 | } | |
4933 | ||
4934 | fprintf(f, "%s", CS string_printing(printed)); | |
4935 | ||
4936 | if (ancestor != addr) | |
4937 | { | |
d6c82d7b JH |
4938 | uschar *original = ancestor->onetime_parent; |
4939 | if (!original) original= ancestor->address; | |
059ec3d9 PH |
4940 | if (strcmpic(original, printed) != 0) |
4941 | fprintf(f, "%s(%sgenerated from %s)", sc, | |
d6c82d7b | 4942 | ancestor != addr->parent ? "ultimately " : "", |
059ec3d9 PH |
4943 | string_printing(original)); |
4944 | } | |
4945 | ||
c562fd30 JH |
4946 | if (addr->host_used) |
4947 | fprintf(f, "\n host %s [%s]", | |
4948 | addr->host_used->name, addr->host_used->address); | |
4949 | ||
059ec3d9 PH |
4950 | fprintf(f, "%s", CS se); |
4951 | return yield; | |
4952 | } | |
4953 | ||
4954 | ||
4955 | ||
4956 | ||
4957 | ||
059ec3d9 PH |
4958 | /************************************************* |
4959 | * Print error for an address * | |
4960 | *************************************************/ | |
4961 | ||
4962 | /* This function is called to print the error information out of an address for | |
4963 | a bounce or a warning message. It tries to format the message reasonably by | |
4964 | introducing newlines. All lines are indented by 4; the initial printing | |
4965 | position must be set before calling. | |
4966 | ||
447d236c | 4967 | This function used always to print the error. Nowadays we want to restrict it |
75def545 PH |
4968 | to cases such as LMTP/SMTP errors from a remote host, and errors from :fail: |
4969 | and filter "fail". We no longer pass other information willy-nilly in bounce | |
4970 | and warning messages. Text in user_message is always output; text in message | |
4971 | only if the af_pass_message flag is set. | |
447d236c | 4972 | |
059ec3d9 | 4973 | Arguments: |
447d236c | 4974 | addr the address |
059ec3d9 | 4975 | f the FILE to print on |
75def545 | 4976 | t some leading text |
059ec3d9 PH |
4977 | |
4978 | Returns: nothing | |
4979 | */ | |
4980 | ||
4981 | static void | |
447d236c | 4982 | print_address_error(address_item *addr, FILE *f, uschar *t) |
059ec3d9 | 4983 | { |
447d236c | 4984 | int count = Ustrlen(t); |
75def545 | 4985 | uschar *s = testflag(addr, af_pass_message)? addr->message : NULL; |
447d236c | 4986 | |
0ba0ee97 JH |
4987 | if (!s && !(s = addr->user_message)) |
4988 | return; | |
447d236c PH |
4989 | |
4990 | fprintf(f, "\n %s", t); | |
4991 | ||
0ba0ee97 | 4992 | while (*s) |
447d236c PH |
4993 | if (*s == '\\' && s[1] == 'n') |
4994 | { | |
4995 | fprintf(f, "\n "); | |
4996 | s += 2; | |
4997 | count = 0; | |
4998 | } | |
4999 | else | |
059ec3d9 | 5000 | { |
447d236c PH |
5001 | fputc(*s, f); |
5002 | count++; | |
5003 | if (*s++ == ':' && isspace(*s) && count > 45) | |
059ec3d9 | 5004 | { |
447d236c | 5005 | fprintf(f, "\n "); /* sic (because space follows) */ |
059ec3d9 PH |
5006 | count = 0; |
5007 | } | |
059ec3d9 | 5008 | } |
059ec3d9 PH |
5009 | } |
5010 | ||
5011 | ||
21bc4865 WB |
5012 | /*********************************************************** |
5013 | * Print Diagnostic-Code for an address * | |
5014 | ************************************************************/ | |
5015 | ||
5016 | /* This function is called to print the error information out of an address for | |
5017 | a bounce or a warning message. It tries to format the message reasonably as | |
5018 | required by RFC 3461 by adding a space after each newline | |
5019 | ||
ca410e79 WB |
5020 | it uses the same logic as print_address_error() above. if af_pass_message is true |
5021 | and addr->message is set it uses the remote host answer. if not addr->user_message | |
5022 | is used instead if available. | |
21bc4865 WB |
5023 | |
5024 | Arguments: | |
5025 | addr the address | |
5026 | f the FILE to print on | |
5027 | ||
5028 | Returns: nothing | |
5029 | */ | |
5030 | ||
5031 | static void | |
5032 | print_dsn_diagnostic_code(const address_item *addr, FILE *f) | |
5033 | { | |
ca410e79 | 5034 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
21bc4865 | 5035 | |
ca410e79 WB |
5036 | /* af_pass_message and addr->message set ? print remote host answer */ |
5037 | if (s) | |
5038 | { | |
5039 | DEBUG(D_deliver) | |
5040 | debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message); | |
447d236c | 5041 | |
ca410e79 WB |
5042 | /* search first ": ". we assume to find the remote-MTA answer there */ |
5043 | if (!(s = Ustrstr(addr->message, ": "))) | |
5044 | return; /* not found, bail out */ | |
5045 | s += 2; /* skip ": " */ | |
5046 | fprintf(f, "Diagnostic-Code: smtp; "); | |
5047 | } | |
ca410e79 | 5048 | /* no message available. do nothing */ |
9031f51a | 5049 | else return; |
21bc4865 | 5050 | |
21bc4865 WB |
5051 | while (*s) |
5052 | if (*s == '\\' && s[1] == 'n') | |
5053 | { | |
5054 | fputs("\n ", f); /* as defined in RFC 3461 */ | |
5055 | s += 2; | |
5056 | } | |
5057 | else | |
5058 | fputc(*s++, f); | |
5059 | ||
5060 | fputc('\n', f); | |
5061 | } | |
447d236c PH |
5062 | |
5063 | ||
d7174846 PH |
5064 | /************************************************* |
5065 | * Check list of addresses for duplication * | |
5066 | *************************************************/ | |
5067 | ||
5068 | /* This function was introduced when the test for duplicate addresses that are | |
5069 | not pipes, files, or autoreplies was moved from the middle of routing to when | |
5070 | routing was complete. That was to fix obscure cases when the routing history | |
dbcef0ea PH |
5071 | affects the subsequent routing of identical addresses. This function is called |
5072 | after routing, to check that the final routed addresses are not duplicates. | |
d7174846 | 5073 | |
dbcef0ea PH |
5074 | If we detect a duplicate, we remember what it is a duplicate of. Note that |
5075 | pipe, file, and autoreply de-duplication is handled during routing, so we must | |
5076 | leave such "addresses" alone here, as otherwise they will incorrectly be | |
5077 | discarded. | |
d7174846 PH |
5078 | |
5079 | Argument: address of list anchor | |
5080 | Returns: nothing | |
5081 | */ | |
5082 | ||
5083 | static void | |
5084 | do_duplicate_check(address_item **anchor) | |
5085 | { | |
5086 | address_item *addr; | |
d6c82d7b | 5087 | while ((addr = *anchor)) |
d7174846 PH |
5088 | { |
5089 | tree_node *tnode; | |
5090 | if (testflag(addr, af_pfr)) | |
5091 | { | |
5092 | anchor = &(addr->next); | |
5093 | } | |
d6c82d7b | 5094 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
d7174846 PH |
5095 | { |
5096 | DEBUG(D_deliver|D_route) | |
5097 | debug_printf("%s is a duplicate address: discarded\n", addr->unique); | |
5098 | *anchor = addr->next; | |
5099 | addr->dupof = tnode->data.ptr; | |
5100 | addr->next = addr_duplicate; | |
5101 | addr_duplicate = addr; | |
5102 | } | |
5103 | else | |
5104 | { | |
5105 | tree_add_duplicate(addr->unique, addr); | |
5106 | anchor = &(addr->next); | |
5107 | } | |
5108 | } | |
5109 | } | |
5110 | ||
5111 | ||
5112 | ||
059ec3d9 PH |
5113 | |
5114 | /************************************************* | |
5115 | * Deliver one message * | |
5116 | *************************************************/ | |
5117 | ||
5118 | /* This is the function which is called when a message is to be delivered. It | |
5119 | is passed the id of the message. It is possible that the message no longer | |
5120 | exists, if some other process has delivered it, and it is also possible that | |
5121 | the message is being worked on by another process, in which case the data file | |
5122 | will be locked. | |
5123 | ||
5124 | If no delivery is attempted for any of the above reasons, the function returns | |
5125 | DELIVER_NOT_ATTEMPTED. | |
5126 | ||
5127 | If the give_up flag is set true, do not attempt any deliveries, but instead | |
5128 | fail all outstanding addresses and return the message to the sender (or | |
5129 | whoever). | |
5130 | ||
5131 | A delivery operation has a process all to itself; we never deliver more than | |
5132 | one message in the same process. Therefore we needn't worry too much about | |
5133 | store leakage. | |
5134 | ||
5135 | Arguments: | |
5136 | id the id of the message to be delivered | |
5137 | forced TRUE if delivery was forced by an administrator; this overrides | |
5138 | retry delays and causes a delivery to be tried regardless | |
5139 | give_up TRUE if an administrator has requested that delivery attempts | |
5140 | be abandoned | |
5141 | ||
5142 | Returns: When the global variable mua_wrapper is FALSE: | |
5143 | DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made | |
5144 | DELIVER_NOT_ATTEMPTED otherwise (see comment above) | |
5145 | When the global variable mua_wrapper is TRUE: | |
5146 | DELIVER_MUA_SUCCEEDED if delivery succeeded | |
5147 | DELIVER_MUA_FAILED if delivery failed | |
5148 | DELIVER_NOT_ATTEMPTED if not attempted (should not occur) | |
5149 | */ | |
5150 | ||
5151 | int | |
5152 | deliver_message(uschar *id, BOOL forced, BOOL give_up) | |
5153 | { | |
5154 | int i, rc; | |
5155 | int final_yield = DELIVER_ATTEMPTED_NORMAL; | |
5156 | time_t now = time(NULL); | |
5157 | address_item *addr_last = NULL; | |
5158 | uschar *filter_message = NULL; | |
5159 | FILE *jread; | |
5160 | int process_recipients = RECIP_ACCEPT; | |
5161 | open_db dbblock; | |
5162 | open_db *dbm_file; | |
faa05a93 | 5163 | extern int acl_where; |
059ec3d9 | 5164 | |
d6c82d7b JH |
5165 | uschar *info = queue_run_pid == (pid_t)0 |
5166 | ? string_sprintf("delivering %s", id) | |
5167 | : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid); | |
059ec3d9 PH |
5168 | |
5169 | /* If the D_process_info bit is on, set_process_info() will output debugging | |
5170 | information. If not, we want to show this initial information if D_deliver or | |
5171 | D_queue_run is set or in verbose mode. */ | |
5172 | ||
5173 | set_process_info("%s", info); | |
5174 | ||
d6c82d7b JH |
5175 | if ( !(debug_selector & D_process_info) |
5176 | && (debug_selector & (D_deliver|D_queue_run|D_v)) | |
5177 | ) | |
059ec3d9 PH |
5178 | debug_printf("%s\n", info); |
5179 | ||
5180 | /* Ensure that we catch any subprocesses that are created. Although Exim | |
5181 | sets SIG_DFL as its initial default, some routes through the code end up | |
5182 | here with it set to SIG_IGN - cases where a non-synchronous delivery process | |
5183 | has been forked, but no re-exec has been done. We use sigaction rather than | |
5184 | plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be | |
5185 | sure it is turned off. (There was a problem on AIX with this.) */ | |
5186 | ||
5187 | #ifdef SA_NOCLDWAIT | |
5188 | { | |
5189 | struct sigaction act; | |
5190 | act.sa_handler = SIG_DFL; | |
5191 | sigemptyset(&(act.sa_mask)); | |
5192 | act.sa_flags = 0; | |
5193 | sigaction(SIGCHLD, &act, NULL); | |
5194 | } | |
5195 | #else | |
5196 | signal(SIGCHLD, SIG_DFL); | |
5197 | #endif | |
5198 | ||
5199 | /* Make the forcing flag available for routers and transports, set up the | |
5200 | global message id field, and initialize the count for returned files and the | |
5201 | message size. This use of strcpy() is OK because the length id is checked when | |
5202 | it is obtained from a command line (the -M or -q options), and otherwise it is | |
5203 | known to be a valid message id. */ | |
5204 | ||
5205 | Ustrcpy(message_id, id); | |
5206 | deliver_force = forced; | |
5207 | return_count = 0; | |
5208 | message_size = 0; | |
5209 | ||
5210 | /* Initialize some flags */ | |
5211 | ||
5212 | update_spool = FALSE; | |
5213 | remove_journal = TRUE; | |
5214 | ||
faa05a93 JH |
5215 | /* Set a known context for any ACLs we call via expansions */ |
5216 | acl_where = ACL_WHERE_DELIVERY; | |
5217 | ||
059ec3d9 PH |
5218 | /* Reset the random number generator, so that if several delivery processes are |
5219 | started from a queue runner that has already used random numbers (for sorting), | |
5220 | they don't all get the same sequence. */ | |
5221 | ||
5222 | random_seed = 0; | |
5223 | ||
5224 | /* Open and lock the message's data file. Exim locks on this one because the | |
5225 | header file may get replaced as it is re-written during the delivery process. | |
5226 | Any failures cause messages to be written to the log, except for missing files | |
5227 | while queue running - another process probably completed delivery. As part of | |
5228 | opening the data file, message_subdir gets set. */ | |
5229 | ||
789f8a4f | 5230 | if ((deliver_datafile = spool_open_datafile(id)) < 0) |
059ec3d9 PH |
5231 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5232 | ||
5233 | /* The value of message_size at this point has been set to the data length, | |
5234 | plus one for the blank line that notionally precedes the data. */ | |
5235 | ||
5236 | /* Now read the contents of the header file, which will set up the headers in | |
5237 | store, and also the list of recipients and the tree of non-recipients and | |
5238 | assorted flags. It updates message_size. If there is a reading or format error, | |
5239 | give up; if the message has been around for sufficiently long, remove it. */ | |
5240 | ||
059ec3d9 | 5241 | { |
41313d92 JH |
5242 | uschar * spoolname = string_sprintf("%s-H", id); |
5243 | if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK) | |
059ec3d9 | 5244 | { |
41313d92 JH |
5245 | if (errno == ERRNO_SPOOLFORMAT) |
5246 | { | |
5247 | struct stat statbuf; | |
5248 | if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""), | |
5249 | &statbuf) == 0) | |
5250 | log_write(0, LOG_MAIN, "Format error in spool file %s: " | |
5251 | "size=" OFF_T_FMT, spoolname, statbuf.st_size); | |
5252 | else | |
5253 | log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname); | |
5254 | } | |
5255 | else | |
5256 | log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname, | |
5257 | strerror(errno)); | |
059ec3d9 | 5258 | |
41313d92 JH |
5259 | /* If we managed to read the envelope data, received_time contains the |
5260 | time the message was received. Otherwise, we can calculate it from the | |
5261 | message id. */ | |
059ec3d9 | 5262 | |
41313d92 JH |
5263 | if (rc != spool_read_hdrerror) |
5264 | { | |
5265 | received_time = 0; | |
5266 | for (i = 0; i < 6; i++) | |
5267 | received_time = received_time * BASE_62 + tab62[id[i] - '0']; | |
5268 | } | |
059ec3d9 | 5269 | |
41313d92 | 5270 | /* If we've had this malformed message too long, sling it. */ |
059ec3d9 | 5271 | |
41313d92 JH |
5272 | if (now - received_time > keep_malformed) |
5273 | { | |
5274 | Uunlink(spool_fname(US"msglog", message_subdir, id, US"")); | |
5275 | Uunlink(spool_fname(US"input", message_subdir, id, US"-D")); | |
5276 | Uunlink(spool_fname(US"input", message_subdir, id, US"-H")); | |
5277 | Uunlink(spool_fname(US"input", message_subdir, id, US"-J")); | |
5278 | log_write(0, LOG_MAIN, "Message removed because older than %s", | |
5279 | readconf_printtime(keep_malformed)); | |
5280 | } | |
059ec3d9 | 5281 | |
41313d92 JH |
5282 | (void)close(deliver_datafile); |
5283 | deliver_datafile = -1; | |
5284 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5285 | } | |
059ec3d9 PH |
5286 | } |
5287 | ||
5288 | /* The spool header file has been read. Look to see if there is an existing | |
5289 | journal file for this message. If there is, it means that a previous delivery | |
5290 | attempt crashed (program or host) before it could update the spool header file. | |
5291 | Read the list of delivered addresses from the journal and add them to the | |
5292 | nonrecipients tree. Then update the spool file. We can leave the journal in | |
5293 | existence, as it will get further successful deliveries added to it in this | |
5294 | run, and it will be deleted if this function gets to its end successfully. | |
5295 | Otherwise it might be needed again. */ | |
5296 | ||
059ec3d9 | 5297 | { |
41313d92 JH |
5298 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
5299 | ||
5300 | if ((jread = Ufopen(fname, "rb"))) | |
059ec3d9 | 5301 | { |
41313d92 JH |
5302 | while (Ufgets(big_buffer, big_buffer_size, jread)) |
5303 | { | |
5304 | int n = Ustrlen(big_buffer); | |
5305 | big_buffer[n-1] = 0; | |
5306 | tree_add_nonrecipient(big_buffer); | |
5307 | DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from " | |
5308 | "journal file\n", big_buffer); | |
5309 | } | |
5310 | (void)fclose(jread); | |
5311 | /* Panic-dies on error */ | |
5312 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
5313 | } | |
5314 | else if (errno != ENOENT) | |
5315 | { | |
5316 | log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: " | |
5317 | "%s", strerror(errno)); | |
5318 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
059ec3d9 | 5319 | } |
059ec3d9 | 5320 | |
41313d92 | 5321 | /* A null recipients list indicates some kind of disaster. */ |
059ec3d9 | 5322 | |
41313d92 JH |
5323 | if (!recipients_list) |
5324 | { | |
5325 | (void)close(deliver_datafile); | |
5326 | deliver_datafile = -1; | |
5327 | log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname); | |
5328 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5329 | } | |
059ec3d9 PH |
5330 | } |
5331 | ||
5332 | ||
5333 | /* Handle a message that is frozen. There are a number of different things that | |
5334 | can happen, but in the default situation, unless forced, no delivery is | |
5335 | attempted. */ | |
5336 | ||
5337 | if (deliver_freeze) | |
5338 | { | |
a7538db1 | 5339 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
059ec3d9 PH |
5340 | /* Moving to another directory removes the message from Exim's view. Other |
5341 | tools must be used to deal with it. Logging of this action happens in | |
5342 | spool_move_message() and its subfunctions. */ | |
5343 | ||
d6c82d7b JH |
5344 | if ( move_frozen_messages |
5345 | && spool_move_message(id, message_subdir, US"", US"F") | |
5346 | ) | |
059ec3d9 | 5347 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
a7538db1 | 5348 | #endif |
059ec3d9 PH |
5349 | |
5350 | /* For all frozen messages (bounces or not), timeout_frozen_after sets the | |
5351 | maximum time to keep messages that are frozen. Thaw if we reach it, with a | |
5352 | flag causing all recipients to be failed. The time is the age of the | |
5353 | message, not the time since freezing. */ | |
5354 | ||
5355 | if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after) | |
5356 | { | |
5357 | log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after"); | |
5358 | process_recipients = RECIP_FAIL_TIMEOUT; | |
5359 | } | |
5360 | ||
5361 | /* For bounce messages (and others with no sender), thaw if the error message | |
5362 | ignore timer is exceeded. The message will be discarded if this delivery | |
5363 | fails. */ | |
5364 | ||
5365 | else if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after) | |
5366 | { | |
5367 | log_write(0, LOG_MAIN, "Unfrozen by errmsg timer"); | |
5368 | } | |
5369 | ||
ef213c3b PH |
5370 | /* If this is a bounce message, or there's no auto thaw, or we haven't |
5371 | reached the auto thaw time yet, and this delivery is not forced by an admin | |
5372 | user, do not attempt delivery of this message. Note that forced is set for | |
5373 | continuing messages down the same channel, in order to skip load checking and | |
5374 | ignore hold domains, but we don't want unfreezing in that case. */ | |
059ec3d9 PH |
5375 | |
5376 | else | |
5377 | { | |
d6c82d7b JH |
5378 | if ( ( sender_address[0] == 0 |
5379 | || auto_thaw <= 0 | |
5380 | || now <= deliver_frozen_at + auto_thaw | |
5381 | ) | |
5382 | && ( !forced || !deliver_force_thaw | |
5383 | || !admin_user || continue_hostname | |
5384 | ) ) | |
059ec3d9 | 5385 | { |
f1e894f3 | 5386 | (void)close(deliver_datafile); |
059ec3d9 PH |
5387 | deliver_datafile = -1; |
5388 | log_write(L_skip_delivery, LOG_MAIN, "Message is frozen"); | |
5389 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5390 | } | |
5391 | ||
5392 | /* If delivery was forced (by an admin user), assume a manual thaw. | |
5393 | Otherwise it's an auto thaw. */ | |
5394 | ||
5395 | if (forced) | |
5396 | { | |
5397 | deliver_manual_thaw = TRUE; | |
5398 | log_write(0, LOG_MAIN, "Unfrozen by forced delivery"); | |
5399 | } | |
5400 | else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw"); | |
5401 | } | |
5402 | ||
5403 | /* We get here if any of the rules for unfreezing have triggered. */ | |
5404 | ||
5405 | deliver_freeze = FALSE; | |
5406 | update_spool = TRUE; | |
5407 | } | |
5408 | ||
5409 | ||
5410 | /* Open the message log file if we are using them. This records details of | |
5411 | deliveries, deferments, and failures for the benefit of the mail administrator. | |
5412 | The log is not used by exim itself to track the progress of a message; that is | |
5413 | done by rewriting the header spool file. */ | |
5414 | ||
5415 | if (message_logs) | |
5416 | { | |
41313d92 JH |
5417 | uschar * fname = spool_fname(US"msglog", message_subdir, id, US""); |
5418 | uschar * error; | |
059ec3d9 PH |
5419 | int fd; |
5420 | ||
41313d92 | 5421 | if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0) |
059ec3d9 PH |
5422 | { |
5423 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error, | |
41313d92 | 5424 | fname, strerror(errno)); |
059ec3d9 PH |
5425 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5426 | } | |
5427 | ||
5428 | /* Make a C stream out of it. */ | |
5429 | ||
d6c82d7b | 5430 | if (!(message_log = fdopen(fd, "a"))) |
059ec3d9 PH |
5431 | { |
5432 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s", | |
41313d92 | 5433 | fname, strerror(errno)); |
059ec3d9 PH |
5434 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5435 | } | |
5436 | } | |
5437 | ||
5438 | ||
5439 | /* If asked to give up on a message, log who did it, and set the action for all | |
5440 | the addresses. */ | |
5441 | ||
5442 | if (give_up) | |
5443 | { | |
5444 | struct passwd *pw = getpwuid(real_uid); | |
d6c82d7b JH |
5445 | log_write(0, LOG_MAIN, "cancelled by %s", |
5446 | pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid)); | |
059ec3d9 PH |
5447 | process_recipients = RECIP_FAIL; |
5448 | } | |
5449 | ||
5450 | /* Otherwise, if there are too many Received: headers, fail all recipients. */ | |
5451 | ||
5452 | else if (received_count > received_headers_max) | |
5453 | process_recipients = RECIP_FAIL_LOOP; | |
5454 | ||
5455 | /* Otherwise, if a system-wide, address-independent message filter is | |
5456 | specified, run it now, except in the case when we are failing all recipients as | |
5457 | a result of timeout_frozen_after. If the system filter yields "delivered", then | |
5458 | ignore the true recipients of the message. Failure of the filter file is | |
5459 | logged, and the delivery attempt fails. */ | |
5460 | ||
d6c82d7b | 5461 | else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT) |
059ec3d9 PH |
5462 | { |
5463 | int rc; | |
5464 | int filtertype; | |
5465 | ugid_block ugid; | |
5466 | redirect_block redirect; | |
5467 | ||
5468 | if (system_filter_uid_set) | |
5469 | { | |
5470 | ugid.uid = system_filter_uid; | |
5471 | ugid.gid = system_filter_gid; | |
5472 | ugid.uid_set = ugid.gid_set = TRUE; | |
5473 | } | |
5474 | else | |
5475 | { | |
5476 | ugid.uid_set = ugid.gid_set = FALSE; | |
5477 | } | |
5478 | ||
5479 | return_path = sender_address; | |
5480 | enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */ | |
5481 | system_filtering = TRUE; | |
5482 | ||
5483 | /* Any error in the filter file causes a delivery to be abandoned. */ | |
5484 | ||
5485 | redirect.string = system_filter; | |
5486 | redirect.isfile = TRUE; | |
5487 | redirect.check_owner = redirect.check_group = FALSE; | |
5488 | redirect.owners = NULL; | |
5489 | redirect.owngroups = NULL; | |
5490 | redirect.pw = NULL; | |
5491 | redirect.modemask = 0; | |
5492 | ||
5493 | DEBUG(D_deliver|D_filter) debug_printf("running system filter\n"); | |
5494 | ||
5495 | rc = rda_interpret( | |
5496 | &redirect, /* Where the data is */ | |
5497 | RDO_DEFER | /* Turn on all the enabling options */ | |
5498 | RDO_FAIL | /* Leave off all the disabling options */ | |
5499 | RDO_FILTER | | |
5500 | RDO_FREEZE | | |
5501 | RDO_REALLOG | | |
5502 | RDO_REWRITE, | |
5503 | NULL, /* No :include: restriction (not used in filter) */ | |
5504 | NULL, /* No sieve vacation directory (not sieve!) */ | |
efd9a422 | 5505 | NULL, /* No sieve enotify mailto owner (not sieve!) */ |
e4a89c47 PH |
5506 | NULL, /* No sieve user address (not sieve!) */ |
5507 | NULL, /* No sieve subaddress (not sieve!) */ | |
059ec3d9 PH |
5508 | &ugid, /* uid/gid data */ |
5509 | &addr_new, /* Where to hang generated addresses */ | |
5510 | &filter_message, /* Where to put error message */ | |
5511 | NULL, /* Don't skip syntax errors */ | |
5512 | &filtertype, /* Will always be set to FILTER_EXIM for this call */ | |
5513 | US"system filter"); /* For error messages */ | |
5514 | ||
5515 | DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc); | |
5516 | ||
5517 | if (rc == FF_ERROR || rc == FF_NONEXIST) | |
5518 | { | |
f1e894f3 | 5519 | (void)close(deliver_datafile); |
059ec3d9 PH |
5520 | deliver_datafile = -1; |
5521 | log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s", | |
5522 | string_printing(filter_message)); | |
5523 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5524 | } | |
5525 | ||
5526 | /* Reset things. If the filter message is an empty string, which can happen | |
5527 | for a filter "fail" or "freeze" command with no text, reset it to NULL. */ | |
5528 | ||
5529 | system_filtering = FALSE; | |
5530 | enable_dollar_recipients = FALSE; | |
d6c82d7b | 5531 | if (filter_message && filter_message[0] == 0) filter_message = NULL; |
059ec3d9 PH |
5532 | |
5533 | /* Save the values of the system filter variables so that user filters | |
5534 | can use them. */ | |
5535 | ||
5536 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); | |
5537 | ||
5538 | /* The filter can request that delivery of the original addresses be | |
5539 | deferred. */ | |
5540 | ||
5541 | if (rc == FF_DEFER) | |
5542 | { | |
5543 | process_recipients = RECIP_DEFER; | |
5544 | deliver_msglog("Delivery deferred by system filter\n"); | |
5545 | log_write(0, LOG_MAIN, "Delivery deferred by system filter"); | |
5546 | } | |
5547 | ||
5548 | /* The filter can request that a message be frozen, but this does not | |
5549 | take place if the message has been manually thawed. In that case, we must | |
5550 | unset "delivered", which is forced by the "freeze" command to make -bF | |
5551 | work properly. */ | |
5552 | ||
5553 | else if (rc == FF_FREEZE && !deliver_manual_thaw) | |
5554 | { | |
5555 | deliver_freeze = TRUE; | |
5556 | deliver_frozen_at = time(NULL); | |
5557 | process_recipients = RECIP_DEFER; | |
5558 | frozen_info = string_sprintf(" by the system filter%s%s", | |
d6c82d7b JH |
5559 | filter_message ? US": " : US"", |
5560 | filter_message ? filter_message : US""); | |
059ec3d9 PH |
5561 | } |
5562 | ||
5563 | /* The filter can request that a message be failed. The error message may be | |
5564 | quite long - it is sent back to the sender in the bounce - but we don't want | |
5565 | to fill up the log with repetitions of it. If it starts with << then the text | |
5566 | between << and >> is written to the log, with the rest left for the bounce | |
5567 | message. */ | |
5568 | ||
5569 | else if (rc == FF_FAIL) | |
5570 | { | |
5571 | uschar *colon = US""; | |
5572 | uschar *logmsg = US""; | |
5573 | int loglen = 0; | |
5574 | ||
5575 | process_recipients = RECIP_FAIL_FILTER; | |
5576 | ||
d6c82d7b | 5577 | if (filter_message) |
059ec3d9 PH |
5578 | { |
5579 | uschar *logend; | |
5580 | colon = US": "; | |
d6c82d7b JH |
5581 | if ( filter_message[0] == '<' |
5582 | && filter_message[1] == '<' | |
5583 | && (logend = Ustrstr(filter_message, ">>")) | |
5584 | ) | |
059ec3d9 PH |
5585 | { |
5586 | logmsg = filter_message + 2; | |
5587 | loglen = logend - logmsg; | |
5588 | filter_message = logend + 2; | |
5589 | if (filter_message[0] == 0) filter_message = NULL; | |
5590 | } | |
5591 | else | |
5592 | { | |
5593 | logmsg = filter_message; | |
5594 | loglen = Ustrlen(filter_message); | |
5595 | } | |
5596 | } | |
5597 | ||
5598 | log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen, | |
5599 | logmsg); | |
5600 | } | |
5601 | ||
5602 | /* Delivery can be restricted only to those recipients (if any) that the | |
5603 | filter specified. */ | |
5604 | ||
5605 | else if (rc == FF_DELIVERED) | |
5606 | { | |
5607 | process_recipients = RECIP_IGNORE; | |
d6c82d7b | 5608 | if (addr_new) |
059ec3d9 | 5609 | log_write(0, LOG_MAIN, "original recipients ignored (system filter)"); |
d6c82d7b JH |
5610 | else |
5611 | log_write(0, LOG_MAIN, "=> discarded (system filter)"); | |
059ec3d9 PH |
5612 | } |
5613 | ||
5614 | /* If any new addresses were created by the filter, fake up a "parent" | |
5615 | for them. This is necessary for pipes, etc., which are expected to have | |
5616 | parents, and it also gives some sensible logging for others. Allow | |
5617 | pipes, files, and autoreplies, and run them as the filter uid if set, | |
5618 | otherwise as the current uid. */ | |
5619 | ||
d6c82d7b | 5620 | if (addr_new) |
059ec3d9 PH |
5621 | { |
5622 | int uid = (system_filter_uid_set)? system_filter_uid : geteuid(); | |
5623 | int gid = (system_filter_gid_set)? system_filter_gid : getegid(); | |
5624 | ||
5625 | /* The text "system-filter" is tested in transport_set_up_command() and in | |
5626 | set_up_shell_command() in the pipe transport, to enable them to permit | |
5627 | $recipients, so don't change it here without also changing it there. */ | |
5628 | ||
5629 | address_item *p = addr_new; | |
5630 | address_item *parent = deliver_make_addr(US"system-filter", FALSE); | |
5631 | ||
5632 | parent->domain = string_copylc(qualify_domain_recipient); | |
5633 | parent->local_part = US"system-filter"; | |
5634 | ||
5635 | /* As part of this loop, we arrange for addr_last to end up pointing | |
5636 | at the final address. This is used if we go on to add addresses for the | |
5637 | original recipients. */ | |
5638 | ||
d6c82d7b | 5639 | while (p) |
059ec3d9 | 5640 | { |
4362ff0d PH |
5641 | if (parent->child_count == SHRT_MAX) |
5642 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more " | |
5643 | "than %d delivery addresses", SHRT_MAX); | |
059ec3d9 PH |
5644 | parent->child_count++; |
5645 | p->parent = parent; | |
5646 | ||
5647 | if (testflag(p, af_pfr)) | |
5648 | { | |
5649 | uschar *tpname; | |
5650 | uschar *type; | |
5651 | p->uid = uid; | |
5652 | p->gid = gid; | |
5653 | setflag(p, af_uid_set | | |
5654 | af_gid_set | | |
5655 | af_allow_file | | |
5656 | af_allow_pipe | | |
5657 | af_allow_reply); | |
5658 | ||
5659 | /* Find the name of the system filter's appropriate pfr transport */ | |
5660 | ||
5661 | if (p->address[0] == '|') | |
5662 | { | |
5663 | type = US"pipe"; | |
5664 | tpname = system_filter_pipe_transport; | |
5665 | address_pipe = p->address; | |
5666 | } | |
5667 | else if (p->address[0] == '>') | |
5668 | { | |
5669 | type = US"reply"; | |
5670 | tpname = system_filter_reply_transport; | |
5671 | } | |
5672 | else | |
5673 | { | |
5674 | if (p->address[Ustrlen(p->address)-1] == '/') | |
5675 | { | |
5676 | type = US"directory"; | |
5677 | tpname = system_filter_directory_transport; | |
5678 | } | |
5679 | else | |
5680 | { | |
5681 | type = US"file"; | |
5682 | tpname = system_filter_file_transport; | |
5683 | } | |
5684 | address_file = p->address; | |
5685 | } | |
5686 | ||
5687 | /* Now find the actual transport, first expanding the name. We have | |
5688 | set address_file or address_pipe above. */ | |
5689 | ||
d6c82d7b | 5690 | if (tpname) |
059ec3d9 PH |
5691 | { |
5692 | uschar *tmp = expand_string(tpname); | |
5693 | address_file = address_pipe = NULL; | |
d6c82d7b | 5694 | if (!tmp) |
059ec3d9 PH |
5695 | p->message = string_sprintf("failed to expand \"%s\" as a " |
5696 | "system filter transport name", tpname); | |
5697 | tpname = tmp; | |
5698 | } | |
5699 | else | |
5700 | { | |
5701 | p->message = string_sprintf("system_filter_%s_transport is unset", | |
5702 | type); | |
5703 | } | |
5704 | ||
d6c82d7b | 5705 | if (tpname) |
059ec3d9 PH |
5706 | { |
5707 | transport_instance *tp; | |
d6c82d7b | 5708 | for (tp = transports; tp; tp = tp->next) |
059ec3d9 PH |
5709 | { |
5710 | if (Ustrcmp(tp->name, tpname) == 0) | |
5711 | { | |
5712 | p->transport = tp; | |
5713 | break; | |
5714 | } | |
5715 | } | |
d6c82d7b | 5716 | if (!tp) |
059ec3d9 PH |
5717 | p->message = string_sprintf("failed to find \"%s\" transport " |
5718 | "for system filter delivery", tpname); | |
5719 | } | |
5720 | ||
5721 | /* If we couldn't set up a transport, defer the delivery, putting the | |
5722 | error on the panic log as well as the main log. */ | |
5723 | ||
d6c82d7b | 5724 | if (!p->transport) |
059ec3d9 PH |
5725 | { |
5726 | address_item *badp = p; | |
5727 | p = p->next; | |
d6c82d7b | 5728 | if (!addr_last) addr_new = p; else addr_last->next = p; |
059ec3d9 PH |
5729 | badp->local_part = badp->address; /* Needed for log line */ |
5730 | post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, DTYPE_ROUTER, 0); | |
5731 | continue; | |
5732 | } | |
5733 | } /* End of pfr handling */ | |
5734 | ||
5735 | /* Either a non-pfr delivery, or we found a transport */ | |
5736 | ||
5737 | DEBUG(D_deliver|D_filter) | |
5738 | debug_printf("system filter added %s\n", p->address); | |
5739 | ||
5740 | addr_last = p; | |
5741 | p = p->next; | |
5742 | } /* Loop through all addr_new addresses */ | |
5743 | } | |
5744 | } | |
5745 | ||
5746 | ||
5747 | /* Scan the recipients list, and for every one that is not in the non- | |
5748 | recipients tree, add an addr item to the chain of new addresses. If the pno | |
5749 | value is non-negative, we must set the onetime parent from it. This which | |
5750 | points to the relevant entry in the recipients list. | |
5751 | ||
5752 | This processing can be altered by the setting of the process_recipients | |
5753 | variable, which is changed if recipients are to be ignored, failed, or | |
5754 | deferred. This can happen as a result of system filter activity, or if the -Mg | |
5755 | option is used to fail all of them. | |
5756 | ||
5757 | Duplicate addresses are handled later by a different tree structure; we can't | |
5758 | just extend the non-recipients tree, because that will be re-written to the | |
5759 | spool if the message is deferred, and in any case there are casing | |
5760 | complications for local addresses. */ | |
5761 | ||
5762 | if (process_recipients != RECIP_IGNORE) | |
5763 | { | |
5764 | for (i = 0; i < recipients_count; i++) | |
5765 | { | |
d6c82d7b | 5766 | if (!tree_search(tree_nonrecipients, recipients_list[i].address)) |
059ec3d9 PH |
5767 | { |
5768 | recipient_item *r = recipients_list + i; | |
5769 | address_item *new = deliver_make_addr(r->address, FALSE); | |
d43cbe25 | 5770 | new->prop.errors_address = r->errors_to; |
8c5d388a | 5771 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
5772 | if ((new->prop.utf8_msg = message_smtputf8)) |
5773 | { | |
5774 | new->prop.utf8_downcvt = message_utf8_downconvert == 1; | |
5775 | new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1; | |
0ec7e948 JH |
5776 | DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n", |
5777 | new->prop.utf8_downcvt ? "yes" | |
5778 | : new->prop.utf8_downcvt_maybe ? "ifneeded" | |
5779 | : "no"); | |
3c8b3577 | 5780 | } |
7ade712c | 5781 | #endif |
059ec3d9 PH |
5782 | |
5783 | if (r->pno >= 0) | |
5784 | new->onetime_parent = recipients_list[r->pno].address; | |
5785 | ||
94431adb | 5786 | /* If DSN support is enabled, set the dsn flags and the original receipt |
6c1c3d1d WB |
5787 | to be passed on to other DSN enabled MTAs */ |
5788 | new->dsn_flags = r->dsn_flags & rf_dsnflags; | |
5789 | new->dsn_orcpt = r->orcpt; | |
f923454a JH |
5790 | DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n", |
5791 | new->dsn_orcpt, new->dsn_flags); | |
6c1c3d1d | 5792 | |
059ec3d9 PH |
5793 | switch (process_recipients) |
5794 | { | |
5795 | /* RECIP_DEFER is set when a system filter freezes a message. */ | |
5796 | ||
5797 | case RECIP_DEFER: | |
5798 | new->next = addr_defer; | |
5799 | addr_defer = new; | |
5800 | break; | |
5801 | ||
5802 | ||
5803 | /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail" | |
5804 | command. */ | |
5805 | ||
5806 | case RECIP_FAIL_FILTER: | |
5807 | new->message = | |
d6c82d7b | 5808 | filter_message ? filter_message : US"delivery cancelled"; |
447d236c | 5809 | setflag(new, af_pass_message); |
059ec3d9 PH |
5810 | goto RECIP_QUEUE_FAILED; /* below */ |
5811 | ||
5812 | ||
5813 | /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older | |
5814 | than the value in timeout_frozen_after. Treat non-bounce messages | |
5815 | similarly to -Mg; for bounce messages we just want to discard, so | |
5816 | don't put the address on the failed list. The timeout has already | |
5817 | been logged. */ | |
5818 | ||
5819 | case RECIP_FAIL_TIMEOUT: | |
5820 | new->message = US"delivery cancelled; message timed out"; | |
5821 | goto RECIP_QUEUE_FAILED; /* below */ | |
5822 | ||
5823 | ||
5824 | /* RECIP_FAIL is set when -Mg has been used. */ | |
5825 | ||
5826 | case RECIP_FAIL: | |
5827 | new->message = US"delivery cancelled by administrator"; | |
5828 | /* Fall through */ | |
5829 | ||
5830 | /* Common code for the failure cases above. If this is not a bounce | |
5831 | message, put the address on the failed list so that it is used to | |
5832 | create a bounce. Otherwise do nothing - this just discards the address. | |
5833 | The incident has already been logged. */ | |
5834 | ||
5835 | RECIP_QUEUE_FAILED: | |
5836 | if (sender_address[0] != 0) | |
5837 | { | |
5838 | new->next = addr_failed; | |
5839 | addr_failed = new; | |
5840 | } | |
5841 | break; | |
5842 | ||
5843 | ||
5844 | /* RECIP_FAIL_LOOP is set when there are too many Received: headers | |
5845 | in the message. Process each address as a routing failure; if this | |
5846 | is a bounce message, it will get frozen. */ | |
5847 | ||
5848 | case RECIP_FAIL_LOOP: | |
5849 | new->message = US"Too many \"Received\" headers - suspected mail loop"; | |
5850 | post_process_one(new, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
5851 | break; | |
5852 | ||
5853 | ||
5854 | /* Value should be RECIP_ACCEPT; take this as the safe default. */ | |
5855 | ||
5856 | default: | |
d6c82d7b | 5857 | if (!addr_new) addr_new = new; else addr_last->next = new; |
059ec3d9 PH |
5858 | addr_last = new; |
5859 | break; | |
5860 | } | |
14a465c3 | 5861 | |
0cbf2b82 | 5862 | #ifndef DISABLE_EVENT |
14a465c3 JH |
5863 | if (process_recipients != RECIP_ACCEPT) |
5864 | { | |
5865 | uschar * save_local = deliver_localpart; | |
55414b25 | 5866 | const uschar * save_domain = deliver_domain; |
14a465c3 JH |
5867 | |
5868 | deliver_localpart = expand_string( | |
5869 | string_sprintf("${local_part:%s}", new->address)); | |
5870 | deliver_domain = expand_string( | |
5871 | string_sprintf("${domain:%s}", new->address)); | |
5872 | ||
774ef2d7 | 5873 | (void) event_raise(event_action, |
14a465c3 JH |
5874 | US"msg:fail:internal", new->message); |
5875 | ||
5876 | deliver_localpart = save_local; | |
5877 | deliver_domain = save_domain; | |
5878 | } | |
5879 | #endif | |
059ec3d9 PH |
5880 | } |
5881 | } | |
5882 | } | |
5883 | ||
5884 | DEBUG(D_deliver) | |
5885 | { | |
d6c82d7b | 5886 | address_item *p; |
059ec3d9 | 5887 | debug_printf("Delivery address list:\n"); |
d6c82d7b JH |
5888 | for (p = addr_new; p; p = p->next) |
5889 | debug_printf(" %s %s\n", p->address, | |
5890 | p->onetime_parent ? p->onetime_parent : US""); | |
059ec3d9 PH |
5891 | } |
5892 | ||
5893 | /* Set up the buffers used for copying over the file when delivering. */ | |
5894 | ||
5895 | deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE); | |
5896 | deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE); | |
5897 | ||
5898 | ||
5899 | ||
5900 | /* Until there are no more new addresses, handle each one as follows: | |
5901 | ||
5902 | . If this is a generated address (indicated by the presence of a parent | |
5903 | pointer) then check to see whether it is a pipe, file, or autoreply, and | |
5904 | if so, handle it directly here. The router that produced the address will | |
5905 | have set the allow flags into the address, and also set the uid/gid required. | |
5906 | Having the routers generate new addresses and then checking them here at | |
5907 | the outer level is tidier than making each router do the checking, and | |
5908 | means that routers don't need access to the failed address queue. | |
5909 | ||
5910 | . Break up the address into local part and domain, and make lowercased | |
5911 | versions of these strings. We also make unquoted versions of the local part. | |
5912 | ||
5913 | . Handle the percent hack for those domains for which it is valid. | |
5914 | ||
5915 | . For child addresses, determine if any of the parents have the same address. | |
5916 | If so, generate a different string for previous delivery checking. Without | |
5917 | this code, if the address spqr generates spqr via a forward or alias file, | |
5918 | delivery of the generated spqr stops further attempts at the top level spqr, | |
5919 | which is not what is wanted - it may have generated other addresses. | |
5920 | ||
5921 | . Check on the retry database to see if routing was previously deferred, but | |
5922 | only if in a queue run. Addresses that are to be routed are put on the | |
5923 | addr_route chain. Addresses that are to be deferred are put on the | |
5924 | addr_defer chain. We do all the checking first, so as not to keep the | |
5925 | retry database open any longer than necessary. | |
5926 | ||
5927 | . Now we run the addresses through the routers. A router may put the address | |
5928 | on either the addr_local or the addr_remote chain for local or remote | |
5929 | delivery, respectively, or put it on the addr_failed chain if it is | |
5930 | undeliveable, or it may generate child addresses and put them on the | |
5931 | addr_new chain, or it may defer an address. All the chain anchors are | |
5932 | passed as arguments so that the routers can be called for verification | |
5933 | purposes as well. | |
5934 | ||
5935 | . If new addresses have been generated by the routers, da capo. | |
5936 | */ | |
5937 | ||
5938 | header_rewritten = FALSE; /* No headers rewritten yet */ | |
d6c82d7b | 5939 | while (addr_new) /* Loop until all addresses dealt with */ |
059ec3d9 PH |
5940 | { |
5941 | address_item *addr, *parent; | |
059ec3d9 PH |
5942 | |
5943 | /* Failure to open the retry database is treated the same as if it does | |
5944 | not exist. In both cases, dbm_file is NULL. */ | |
5945 | ||
d6c82d7b | 5946 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
059ec3d9 PH |
5947 | { |
5948 | DEBUG(D_deliver|D_retry|D_route|D_hints_lookup) | |
5949 | debug_printf("no retry data available\n"); | |
5950 | } | |
5951 | ||
5952 | /* Scan the current batch of new addresses, to handle pipes, files and | |
5953 | autoreplies, and determine which others are ready for routing. */ | |
5954 | ||
d6c82d7b | 5955 | while (addr_new) |
059ec3d9 PH |
5956 | { |
5957 | int rc; | |
5958 | uschar *p; | |
5959 | tree_node *tnode; | |
5960 | dbdata_retry *domain_retry_record; | |
5961 | dbdata_retry *address_retry_record; | |
5962 | ||
5963 | addr = addr_new; | |
5964 | addr_new = addr->next; | |
5965 | ||
5966 | DEBUG(D_deliver|D_retry|D_route) | |
5967 | { | |
5968 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); | |
5969 | debug_printf("Considering: %s\n", addr->address); | |
5970 | } | |
5971 | ||
5972 | /* Handle generated address that is a pipe or a file or an autoreply. */ | |
5973 | ||
5974 | if (testflag(addr, af_pfr)) | |
5975 | { | |
424a1c63 PH |
5976 | /* If an autoreply in a filter could not generate a syntactically valid |
5977 | address, give up forthwith. Set af_ignore_error so that we don't try to | |
5978 | generate a bounce. */ | |
5979 | ||
5980 | if (testflag(addr, af_bad_reply)) | |
5981 | { | |
5982 | addr->basic_errno = ERRNO_BADADDRESS2; | |
5983 | addr->local_part = addr->address; | |
5984 | addr->message = | |
5985 | US"filter autoreply generated syntactically invalid recipient"; | |
5986 | setflag(addr, af_ignore_error); | |
5987 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
5988 | continue; /* with the next new address */ | |
5989 | } | |
059ec3d9 PH |
5990 | |
5991 | /* If two different users specify delivery to the same pipe or file or | |
5992 | autoreply, there should be two different deliveries, so build a unique | |
5993 | string that incorporates the original address, and use this for | |
5994 | duplicate testing and recording delivery, and also for retrying. */ | |
5995 | ||
5996 | addr->unique = | |
424a1c63 PH |
5997 | string_sprintf("%s:%s", addr->address, addr->parent->unique + |
5998 | (testflag(addr->parent, af_homonym)? 3:0)); | |
059ec3d9 PH |
5999 | |
6000 | addr->address_retry_key = addr->domain_retry_key = | |
6001 | string_sprintf("T:%s", addr->unique); | |
6002 | ||
6003 | /* If a filter file specifies two deliveries to the same pipe or file, | |
6004 | we want to de-duplicate, but this is probably not wanted for two mail | |
6005 | commands to the same address, where probably both should be delivered. | |
6006 | So, we have to invent a different unique string in that case. Just | |
6007 | keep piling '>' characters on the front. */ | |
6008 | ||
6009 | if (addr->address[0] == '>') | |
6010 | { | |
d6c82d7b | 6011 | while (tree_search(tree_duplicates, addr->unique)) |
059ec3d9 PH |
6012 | addr->unique = string_sprintf(">%s", addr->unique); |
6013 | } | |
6014 | ||
d6c82d7b | 6015 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
059ec3d9 PH |
6016 | { |
6017 | DEBUG(D_deliver|D_route) | |
6018 | debug_printf("%s is a duplicate address: discarded\n", addr->address); | |
6019 | addr->dupof = tnode->data.ptr; | |
6020 | addr->next = addr_duplicate; | |
6021 | addr_duplicate = addr; | |
6022 | continue; | |
6023 | } | |
6024 | ||
6025 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6026 | ||
6027 | /* Check for previous delivery */ | |
6028 | ||
d6c82d7b | 6029 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6030 | { |
6031 | DEBUG(D_deliver|D_route) | |
6032 | debug_printf("%s was previously delivered: discarded\n", addr->address); | |
6033 | child_done(addr, tod_stamp(tod_log)); | |
6034 | continue; | |
6035 | } | |
6036 | ||
6037 | /* Save for checking future duplicates */ | |
6038 | ||
6039 | tree_add_duplicate(addr->unique, addr); | |
6040 | ||
6041 | /* Set local part and domain */ | |
6042 | ||
6043 | addr->local_part = addr->address; | |
6044 | addr->domain = addr->parent->domain; | |
6045 | ||
6046 | /* Ensure that the delivery is permitted. */ | |
6047 | ||
6048 | if (testflag(addr, af_file)) | |
6049 | { | |
6050 | if (!testflag(addr, af_allow_file)) | |
6051 | { | |
6052 | addr->basic_errno = ERRNO_FORBIDFILE; | |
6053 | addr->message = US"delivery to file forbidden"; | |
6054 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
6055 | continue; /* with the next new address */ | |
6056 | } | |
6057 | } | |
6058 | else if (addr->address[0] == '|') | |
6059 | { | |
6060 | if (!testflag(addr, af_allow_pipe)) | |
6061 | { | |
6062 | addr->basic_errno = ERRNO_FORBIDPIPE; | |
6063 | addr->message = US"delivery to pipe forbidden"; | |
6064 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
6065 | continue; /* with the next new address */ | |
6066 | } | |
6067 | } | |
6068 | else if (!testflag(addr, af_allow_reply)) | |
6069 | { | |
6070 | addr->basic_errno = ERRNO_FORBIDREPLY; | |
6071 | addr->message = US"autoreply forbidden"; | |
6072 | (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0); | |
6073 | continue; /* with the next new address */ | |
6074 | } | |
6075 | ||
6076 | /* If the errno field is already set to BADTRANSPORT, it indicates | |
6077 | failure to expand a transport string, or find the associated transport, | |
6078 | or an unset transport when one is required. Leave this test till now so | |
6079 | that the forbid errors are given in preference. */ | |
6080 | ||
6081 | if (addr->basic_errno == ERRNO_BADTRANSPORT) | |
6082 | { | |
6083 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6084 | continue; | |
6085 | } | |
6086 | ||
6087 | /* Treat /dev/null as a special case and abandon the delivery. This | |
6088 | avoids having to specify a uid on the transport just for this case. | |
6089 | Arrange for the transport name to be logged as "**bypassed**". */ | |
6090 | ||
6091 | if (Ustrcmp(addr->address, "/dev/null") == 0) | |
6092 | { | |
6093 | uschar *save = addr->transport->name; | |
6094 | addr->transport->name = US"**bypassed**"; | |
6095 | (void)post_process_one(addr, OK, LOG_MAIN, DTYPE_TRANSPORT, '='); | |
6096 | addr->transport->name = save; | |
6097 | continue; /* with the next new address */ | |
6098 | } | |
6099 | ||
6100 | /* Pipe, file, or autoreply delivery is to go ahead as a normal local | |
6101 | delivery. */ | |
6102 | ||
6103 | DEBUG(D_deliver|D_route) | |
6104 | debug_printf("queued for %s transport\n", addr->transport->name); | |
6105 | addr->next = addr_local; | |
6106 | addr_local = addr; | |
6107 | continue; /* with the next new address */ | |
6108 | } | |
6109 | ||
6110 | /* Handle normal addresses. First, split up into local part and domain, | |
6111 | handling the %-hack if necessary. There is the possibility of a defer from | |
6112 | a lookup in percent_hack_domains. */ | |
6113 | ||
6114 | if ((rc = deliver_split_address(addr)) == DEFER) | |
6115 | { | |
6116 | addr->message = US"cannot check percent_hack_domains"; | |
6117 | addr->basic_errno = ERRNO_LISTDEFER; | |
6118 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0); | |
6119 | continue; | |
6120 | } | |
6121 | ||
6122 | /* Check to see if the domain is held. If so, proceed only if the | |
6123 | delivery was forced by hand. */ | |
6124 | ||
6125 | deliver_domain = addr->domain; /* set $domain */ | |
d6c82d7b JH |
6126 | if ( !forced && hold_domains |
6127 | && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0, | |
059ec3d9 | 6128 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, |
d6c82d7b JH |
6129 | NULL)) != FAIL |
6130 | ) | |
059ec3d9 PH |
6131 | { |
6132 | if (rc == DEFER) | |
6133 | { | |
6134 | addr->message = US"hold_domains lookup deferred"; | |
6135 | addr->basic_errno = ERRNO_LISTDEFER; | |
6136 | } | |
6137 | else | |
6138 | { | |
6139 | addr->message = US"domain is held"; | |
6140 | addr->basic_errno = ERRNO_HELD; | |
6141 | } | |
6142 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0); | |
6143 | continue; | |
6144 | } | |
6145 | ||
6146 | /* Now we can check for duplicates and previously delivered addresses. In | |
6147 | order to do this, we have to generate a "unique" value for each address, | |
6148 | because there may be identical actual addresses in a line of descendents. | |
6149 | The "unique" field is initialized to the same value as the "address" field, | |
6150 | but gets changed here to cope with identically-named descendents. */ | |
6151 | ||
d6c82d7b | 6152 | for (parent = addr->parent; parent; parent = parent->parent) |
059ec3d9 PH |
6153 | if (strcmpic(addr->address, parent->address) == 0) break; |
6154 | ||
6155 | /* If there's an ancestor with the same name, set the homonym flag. This | |
6156 | influences how deliveries are recorded. Then add a prefix on the front of | |
6157 | the unique address. We use \n\ where n starts at 0 and increases each time. | |
6158 | It is unlikely to pass 9, but if it does, it may look odd but will still | |
6159 | work. This means that siblings or cousins with the same names are treated | |
6160 | as duplicates, which is what we want. */ | |
6161 | ||
d6c82d7b | 6162 | if (parent) |
059ec3d9 PH |
6163 | { |
6164 | setflag(addr, af_homonym); | |
6165 | if (parent->unique[0] != '\\') | |
6166 | addr->unique = string_sprintf("\\0\\%s", addr->address); | |
6167 | else | |
6168 | addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1, | |
6169 | addr->address); | |
6170 | } | |
6171 | ||
6172 | /* Ensure that the domain in the unique field is lower cased, because | |
6173 | domains are always handled caselessly. */ | |
6174 | ||
6175 | p = Ustrrchr(addr->unique, '@'); | |
6176 | while (*p != 0) { *p = tolower(*p); p++; } | |
6177 | ||
6178 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6179 | ||
d6c82d7b | 6180 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6181 | { |
6182 | DEBUG(D_deliver|D_route) | |
6183 | debug_printf("%s was previously delivered: discarded\n", addr->unique); | |
6184 | child_done(addr, tod_stamp(tod_log)); | |
6185 | continue; | |
6186 | } | |
6187 | ||
059ec3d9 | 6188 | /* Get the routing retry status, saving the two retry keys (with and |
48c7f9e2 PH |
6189 | without the local part) for subsequent use. If there is no retry record for |
6190 | the standard address routing retry key, we look for the same key with the | |
6191 | sender attached, because this form is used by the smtp transport after a | |
6192 | 4xx response to RCPT when address_retry_include_sender is true. */ | |
059ec3d9 PH |
6193 | |
6194 | addr->domain_retry_key = string_sprintf("R:%s", addr->domain); | |
6195 | addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part, | |
6196 | addr->domain); | |
6197 | ||
d6c82d7b | 6198 | if (dbm_file) |
059ec3d9 PH |
6199 | { |
6200 | domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key); | |
d6c82d7b JH |
6201 | if ( domain_retry_record |
6202 | && now - domain_retry_record->time_stamp > retry_data_expire | |
6203 | ) | |
48c7f9e2 | 6204 | domain_retry_record = NULL; /* Ignore if too old */ |
059ec3d9 PH |
6205 | |
6206 | address_retry_record = dbfn_read(dbm_file, addr->address_retry_key); | |
d6c82d7b JH |
6207 | if ( address_retry_record |
6208 | && now - address_retry_record->time_stamp > retry_data_expire | |
6209 | ) | |
48c7f9e2 PH |
6210 | address_retry_record = NULL; /* Ignore if too old */ |
6211 | ||
d6c82d7b | 6212 | if (!address_retry_record) |
48c7f9e2 | 6213 | { |
09945f1e | 6214 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
48c7f9e2 PH |
6215 | sender_address); |
6216 | address_retry_record = dbfn_read(dbm_file, altkey); | |
d6c82d7b JH |
6217 | if ( address_retry_record |
6218 | && now - address_retry_record->time_stamp > retry_data_expire) | |
48c7f9e2 PH |
6219 | address_retry_record = NULL; /* Ignore if too old */ |
6220 | } | |
059ec3d9 | 6221 | } |
d6c82d7b JH |
6222 | else |
6223 | domain_retry_record = address_retry_record = NULL; | |
059ec3d9 PH |
6224 | |
6225 | DEBUG(D_deliver|D_retry) | |
6226 | { | |
d6c82d7b | 6227 | if (!domain_retry_record) |
059ec3d9 | 6228 | debug_printf("no domain retry record\n"); |
d6c82d7b | 6229 | if (!address_retry_record) |
059ec3d9 PH |
6230 | debug_printf("no address retry record\n"); |
6231 | } | |
6232 | ||
6233 | /* If we are sending a message down an existing SMTP connection, we must | |
6234 | assume that the message which created the connection managed to route | |
6235 | an address to that connection. We do not want to run the risk of taking | |
6236 | a long time over routing here, because if we do, the server at the other | |
6237 | end of the connection may time it out. This is especially true for messages | |
6238 | with lots of addresses. For this kind of delivery, queue_running is not | |
6239 | set, so we would normally route all addresses. We take a pragmatic approach | |
6240 | and defer routing any addresses that have any kind of domain retry record. | |
6241 | That is, we don't even look at their retry times. It doesn't matter if this | |
6242 | doesn't work occasionally. This is all just an optimization, after all. | |
6243 | ||
6244 | The reason for not doing the same for address retries is that they normally | |
6245 | arise from 4xx responses, not DNS timeouts. */ | |
6246 | ||
d6c82d7b | 6247 | if (continue_hostname && domain_retry_record) |
059ec3d9 PH |
6248 | { |
6249 | addr->message = US"reusing SMTP connection skips previous routing defer"; | |
6250 | addr->basic_errno = ERRNO_RRETRY; | |
6251 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6252 | } | |
6253 | ||
f6c332bd PH |
6254 | /* If we are in a queue run, defer routing unless there is no retry data or |
6255 | we've passed the next retry time, or this message is forced. In other | |
6256 | words, ignore retry data when not in a queue run. | |
6257 | ||
6258 | However, if the domain retry time has expired, always allow the routing | |
6259 | attempt. If it fails again, the address will be failed. This ensures that | |
059ec3d9 PH |
6260 | each address is routed at least once, even after long-term routing |
6261 | failures. | |
6262 | ||
6263 | If there is an address retry, check that too; just wait for the next | |
6264 | retry time. This helps with the case when the temporary error on the | |
6265 | address was really message-specific rather than address specific, since | |
f6c332bd PH |
6266 | it allows other messages through. |
6267 | ||
6268 | We also wait for the next retry time if this is a message sent down an | |
6269 | existing SMTP connection (even though that will be forced). Otherwise there | |
6270 | will be far too many attempts for an address that gets a 4xx error. In | |
6271 | fact, after such an error, we should not get here because, the host should | |
6272 | not be remembered as one this message needs. However, there was a bug that | |
ba9af0af TF |
6273 | used to cause this to happen, so it is best to be on the safe side. |
6274 | ||
1ddeb334 TF |
6275 | Even if we haven't reached the retry time in the hints, there is one more |
6276 | check to do, which is for the ultimate address timeout. We only do this | |
6277 | check if there is an address retry record and there is not a domain retry | |
6278 | record; this implies that previous attempts to handle the address had the | |
6279 | retry_use_local_parts option turned on. We use this as an approximation | |
6280 | for the destination being like a local delivery, for example delivery over | |
6281 | LMTP to an IMAP message store. In this situation users are liable to bump | |
6282 | into their quota and thereby have intermittently successful deliveries, | |
6283 | which keep the retry record fresh, which can lead to us perpetually | |
6284 | deferring messages. */ | |
059ec3d9 | 6285 | |
d6c82d7b JH |
6286 | else if ( ( queue_running && !deliver_force |
6287 | || continue_hostname | |
6288 | ) | |
6289 | && ( ( domain_retry_record | |
6290 | && now < domain_retry_record->next_try | |
6291 | && !domain_retry_record->expired | |
6292 | ) | |
6293 | || ( address_retry_record | |
6294 | && now < address_retry_record->next_try | |
6295 | ) ) | |
6296 | && ( domain_retry_record | |
6297 | || !address_retry_record | |
6298 | || !retry_ultimate_address_timeout(addr->address_retry_key, | |
6299 | addr->domain, address_retry_record, now) | |
6300 | ) ) | |
059ec3d9 PH |
6301 | { |
6302 | addr->message = US"retry time not reached"; | |
6303 | addr->basic_errno = ERRNO_RRETRY; | |
6304 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6305 | } | |
6306 | ||
6307 | /* The domain is OK for routing. Remember if retry data exists so it | |
6308 | can be cleaned up after a successful delivery. */ | |
6309 | ||
6310 | else | |
6311 | { | |
d6c82d7b | 6312 | if (domain_retry_record || address_retry_record) |
059ec3d9 PH |
6313 | setflag(addr, af_dr_retry_exists); |
6314 | addr->next = addr_route; | |
6315 | addr_route = addr; | |
6316 | DEBUG(D_deliver|D_route) | |
6317 | debug_printf("%s: queued for routing\n", addr->address); | |
6318 | } | |
6319 | } | |
6320 | ||
6321 | /* The database is closed while routing is actually happening. Requests to | |
6322 | update it are put on a chain and all processed together at the end. */ | |
6323 | ||
d6c82d7b | 6324 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
6325 | |
6326 | /* If queue_domains is set, we don't even want to try routing addresses in | |
6327 | those domains. During queue runs, queue_domains is forced to be unset. | |
6328 | Optimize by skipping this pass through the addresses if nothing is set. */ | |
6329 | ||
d6c82d7b | 6330 | if (!deliver_force && queue_domains) |
059ec3d9 PH |
6331 | { |
6332 | address_item *okaddr = NULL; | |
d6c82d7b | 6333 | while (addr_route) |
059ec3d9 PH |
6334 | { |
6335 | address_item *addr = addr_route; | |
6336 | addr_route = addr->next; | |
6337 | ||
6338 | deliver_domain = addr->domain; /* set $domain */ | |
55414b25 | 6339 | if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0, |
059ec3d9 PH |
6340 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) |
6341 | != OK) | |
6342 | { | |
6343 | if (rc == DEFER) | |
6344 | { | |
6345 | addr->basic_errno = ERRNO_LISTDEFER; | |
6346 | addr->message = US"queue_domains lookup deferred"; | |
6347 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6348 | } | |
6349 | else | |
6350 | { | |
6351 | addr->next = okaddr; | |
6352 | okaddr = addr; | |
6353 | } | |
6354 | } | |
6355 | else | |
6356 | { | |
6357 | addr->basic_errno = ERRNO_QUEUE_DOMAIN; | |
6358 | addr->message = US"domain is in queue_domains"; | |
6359 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0); | |
6360 | } | |
6361 | } | |
6362 | ||
6363 | addr_route = okaddr; | |
6364 | } | |
6365 | ||
6366 | /* Now route those addresses that are not deferred. */ | |
6367 | ||
d6c82d7b | 6368 | while (addr_route) |
059ec3d9 PH |
6369 | { |
6370 | int rc; | |
6371 | address_item *addr = addr_route; | |
55414b25 | 6372 | const uschar *old_domain = addr->domain; |
059ec3d9 PH |
6373 | uschar *old_unique = addr->unique; |
6374 | addr_route = addr->next; | |
6375 | addr->next = NULL; | |
6376 | ||
6377 | /* Just in case some router parameter refers to it. */ | |
6378 | ||
d6c82d7b JH |
6379 | if (!(return_path = addr->prop.errors_address)) |
6380 | return_path = sender_address; | |
059ec3d9 PH |
6381 | |
6382 | /* If a router defers an address, add a retry item. Whether or not to | |
6383 | use the local part in the key is a property of the router. */ | |
6384 | ||
6385 | if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new, | |
6386 | &addr_succeed, v_none)) == DEFER) | |
d6c82d7b JH |
6387 | retry_add_item(addr, |
6388 | addr->router->retry_use_local_part | |
6389 | ? string_sprintf("R:%s@%s", addr->local_part, addr->domain) | |
6390 | : string_sprintf("R:%s", addr->domain), | |
6391 | 0); | |
059ec3d9 PH |
6392 | |
6393 | /* Otherwise, if there is an existing retry record in the database, add | |
09945f1e PH |
6394 | retry items to delete both forms. We must also allow for the possibility |
6395 | of a routing retry that includes the sender address. Since the domain might | |
6396 | have been rewritten (expanded to fully qualified) as a result of routing, | |
6397 | ensure that the rewritten form is also deleted. */ | |
059ec3d9 PH |
6398 | |
6399 | else if (testflag(addr, af_dr_retry_exists)) | |
6400 | { | |
09945f1e PH |
6401 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
6402 | sender_address); | |
6403 | retry_add_item(addr, altkey, rf_delete); | |
059ec3d9 PH |
6404 | retry_add_item(addr, addr->address_retry_key, rf_delete); |
6405 | retry_add_item(addr, addr->domain_retry_key, rf_delete); | |
6406 | if (Ustrcmp(addr->domain, old_domain) != 0) | |
6407 | retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete); | |
6408 | } | |
6409 | ||
6410 | /* DISCARD is given for :blackhole: and "seen finish". The event has been | |
6411 | logged, but we need to ensure the address (and maybe parents) is marked | |
6412 | done. */ | |
6413 | ||
6414 | if (rc == DISCARD) | |
6415 | { | |
6416 | address_done(addr, tod_stamp(tod_log)); | |
6417 | continue; /* route next address */ | |
6418 | } | |
6419 | ||
6420 | /* The address is finished with (failed or deferred). */ | |
6421 | ||
6422 | if (rc != OK) | |
6423 | { | |
6424 | (void)post_process_one(addr, rc, LOG_MAIN, DTYPE_ROUTER, 0); | |
6425 | continue; /* route next address */ | |
6426 | } | |
6427 | ||
6428 | /* The address has been routed. If the router changed the domain, it will | |
6429 | also have changed the unique address. We have to test whether this address | |
6430 | has already been delivered, because it's the unique address that finally | |
6431 | gets recorded. */ | |
6432 | ||
d6c82d7b JH |
6433 | if ( addr->unique != old_unique |
6434 | && tree_search(tree_nonrecipients, addr->unique) != 0 | |
6435 | ) | |
059ec3d9 PH |
6436 | { |
6437 | DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: " | |
6438 | "discarded\n", addr->address); | |
6439 | if (addr_remote == addr) addr_remote = addr->next; | |
6440 | else if (addr_local == addr) addr_local = addr->next; | |
6441 | } | |
6442 | ||
6443 | /* If the router has same_domain_copy_routing set, we are permitted to copy | |
6444 | the routing for any other addresses with the same domain. This is an | |
6445 | optimisation to save repeated DNS lookups for "standard" remote domain | |
6446 | routing. The option is settable only on routers that generate host lists. | |
6447 | We play it very safe, and do the optimization only if the address is routed | |
6448 | to a remote transport, there are no header changes, and the domain was not | |
6449 | modified by the router. */ | |
6450 | ||
d6c82d7b JH |
6451 | if ( addr_remote == addr |
6452 | && addr->router->same_domain_copy_routing | |
6453 | && !addr->prop.extra_headers | |
6454 | && !addr->prop.remove_headers | |
6455 | && old_domain == addr->domain | |
6456 | ) | |
059ec3d9 PH |
6457 | { |
6458 | address_item **chain = &addr_route; | |
d6c82d7b | 6459 | while (*chain) |
059ec3d9 PH |
6460 | { |
6461 | address_item *addr2 = *chain; | |
6462 | if (Ustrcmp(addr2->domain, addr->domain) != 0) | |
6463 | { | |
6464 | chain = &(addr2->next); | |
6465 | continue; | |
6466 | } | |
6467 | ||
6468 | /* Found a suitable address; take it off the routing list and add it to | |
6469 | the remote delivery list. */ | |
6470 | ||
6471 | *chain = addr2->next; | |
6472 | addr2->next = addr_remote; | |
6473 | addr_remote = addr2; | |
6474 | ||
6475 | /* Copy the routing data */ | |
6476 | ||
6477 | addr2->domain = addr->domain; | |
6478 | addr2->router = addr->router; | |
6479 | addr2->transport = addr->transport; | |
6480 | addr2->host_list = addr->host_list; | |
6481 | addr2->fallback_hosts = addr->fallback_hosts; | |
d43cbe25 | 6482 | addr2->prop.errors_address = addr->prop.errors_address; |
059ec3d9 PH |
6483 | copyflag(addr2, addr, af_hide_child | af_local_host_removed); |
6484 | ||
6485 | DEBUG(D_deliver|D_route) | |
6486 | { | |
6487 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n" | |
6488 | "routing %s\n" | |
6489 | "Routing for %s copied from %s\n", | |
6490 | addr2->address, addr2->address, addr->address); | |
6491 | } | |
6492 | } | |
6493 | } | |
6494 | } /* Continue with routing the next address. */ | |
6495 | } /* Loop to process any child addresses that the routers created, and | |
6496 | any rerouted addresses that got put back on the new chain. */ | |
6497 | ||
6498 | ||
6499 | /* Debugging: show the results of the routing */ | |
6500 | ||
6501 | DEBUG(D_deliver|D_retry|D_route) | |
6502 | { | |
d6c82d7b | 6503 | address_item *p; |
059ec3d9 PH |
6504 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); |
6505 | debug_printf("After routing:\n Local deliveries:\n"); | |
d6c82d7b | 6506 | for (p = addr_local; p; p = p->next) |
059ec3d9 | 6507 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6508 | |
059ec3d9 | 6509 | debug_printf(" Remote deliveries:\n"); |
d6c82d7b | 6510 | for (p = addr_remote; p; p = p->next) |
059ec3d9 | 6511 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6512 | |
059ec3d9 | 6513 | debug_printf(" Failed addresses:\n"); |
d6c82d7b | 6514 | for (p = addr_failed; p; p = p->next) |
059ec3d9 | 6515 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6516 | |
059ec3d9 | 6517 | debug_printf(" Deferred addresses:\n"); |
d6c82d7b | 6518 | for (p = addr_defer; p; p = p->next) |
059ec3d9 | 6519 | debug_printf(" %s\n", p->address); |
059ec3d9 PH |
6520 | } |
6521 | ||
6522 | /* Free any resources that were cached during routing. */ | |
6523 | ||
6524 | search_tidyup(); | |
6525 | route_tidyup(); | |
6526 | ||
6527 | /* These two variables are set only during routing, after check_local_user. | |
6528 | Ensure they are not set in transports. */ | |
6529 | ||
6530 | local_user_gid = (gid_t)(-1); | |
6531 | local_user_uid = (uid_t)(-1); | |
6532 | ||
d7174846 PH |
6533 | /* Check for any duplicate addresses. This check is delayed until after |
6534 | routing, because the flexibility of the routing configuration means that | |
6535 | identical addresses with different parentage may end up being redirected to | |
6536 | different addresses. Checking for duplicates too early (as we previously used | |
6537 | to) makes this kind of thing not work. */ | |
6538 | ||
6539 | do_duplicate_check(&addr_local); | |
6540 | do_duplicate_check(&addr_remote); | |
6541 | ||
059ec3d9 PH |
6542 | /* When acting as an MUA wrapper, we proceed only if all addresses route to a |
6543 | remote transport. The check that they all end up in one transaction happens in | |
6544 | the do_remote_deliveries() function. */ | |
6545 | ||
d6c82d7b JH |
6546 | if ( mua_wrapper |
6547 | && (addr_local || addr_failed || addr_defer) | |
6548 | ) | |
059ec3d9 PH |
6549 | { |
6550 | address_item *addr; | |
6551 | uschar *which, *colon, *msg; | |
6552 | ||
d6c82d7b | 6553 | if (addr_local) |
059ec3d9 PH |
6554 | { |
6555 | addr = addr_local; | |
6556 | which = US"local"; | |
6557 | } | |
d6c82d7b | 6558 | else if (addr_defer) |
059ec3d9 PH |
6559 | { |
6560 | addr = addr_defer; | |
6561 | which = US"deferred"; | |
6562 | } | |
6563 | else | |
6564 | { | |
6565 | addr = addr_failed; | |
6566 | which = US"failed"; | |
6567 | } | |
6568 | ||
d6c82d7b | 6569 | while (addr->parent) addr = addr->parent; |
059ec3d9 | 6570 | |
d6c82d7b | 6571 | if (addr->message) |
059ec3d9 PH |
6572 | { |
6573 | colon = US": "; | |
6574 | msg = addr->message; | |
6575 | } | |
6576 | else colon = msg = US""; | |
6577 | ||
6578 | /* We don't need to log here for a forced failure as it will already | |
6579 | have been logged. Defer will also have been logged, but as a defer, so we do | |
6580 | need to do the failure logging. */ | |
6581 | ||
6582 | if (addr != addr_failed) | |
6583 | log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery", | |
6584 | addr->address, which); | |
6585 | ||
6586 | /* Always write an error to the caller */ | |
6587 | ||
6588 | fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address, | |
6589 | which, colon, msg); | |
6590 | ||
6591 | final_yield = DELIVER_MUA_FAILED; | |
6592 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
6593 | goto DELIVERY_TIDYUP; | |
6594 | } | |
6595 | ||
6596 | ||
6597 | /* If this is a run to continue deliveries to an external channel that is | |
6598 | already set up, defer any local deliveries. */ | |
6599 | ||
d6c82d7b | 6600 | if (continue_transport) |
059ec3d9 | 6601 | { |
d6c82d7b | 6602 | if (addr_defer) |
059ec3d9 PH |
6603 | { |
6604 | address_item *addr = addr_defer; | |
d6c82d7b | 6605 | while (addr->next) addr = addr->next; |
059ec3d9 PH |
6606 | addr->next = addr_local; |
6607 | } | |
d6c82d7b JH |
6608 | else |
6609 | addr_defer = addr_local; | |
059ec3d9 PH |
6610 | addr_local = NULL; |
6611 | } | |
6612 | ||
6613 | ||
6614 | /* Because address rewriting can happen in the routers, we should not really do | |
6615 | ANY deliveries until all addresses have been routed, so that all recipients of | |
6616 | the message get the same headers. However, this is in practice not always | |
6617 | possible, since sometimes remote addresses give DNS timeouts for days on end. | |
6618 | The pragmatic approach is to deliver what we can now, saving any rewritten | |
6619 | headers so that at least the next lot of recipients benefit from the rewriting | |
6620 | that has already been done. | |
6621 | ||
6622 | If any headers have been rewritten during routing, update the spool file to | |
6623 | remember them for all subsequent deliveries. This can be delayed till later if | |
6624 | there is only address to be delivered - if it succeeds the spool write need not | |
6625 | happen. */ | |
6626 | ||
d6c82d7b JH |
6627 | if ( header_rewritten |
6628 | && ( ( addr_local | |
6629 | && (addr_local->next || addr_remote) | |
6630 | ) | |
6631 | || (addr_remote && addr_remote->next) | |
6632 | ) ) | |
059ec3d9 PH |
6633 | { |
6634 | /* Panic-dies on error */ | |
6635 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
6636 | header_rewritten = FALSE; | |
6637 | } | |
6638 | ||
6639 | ||
6640 | /* If there are any deliveries to be done, open the journal file. This is used | |
6641 | to record successful deliveries as soon as possible after each delivery is | |
6642 | known to be complete. A file opened with O_APPEND is used so that several | |
6643 | processes can run simultaneously. | |
6644 | ||
6645 | The journal is just insurance against crashes. When the spool file is | |
6646 | ultimately updated at the end of processing, the journal is deleted. If a | |
6647 | journal is found to exist at the start of delivery, the addresses listed | |
6648 | therein are added to the non-recipients. */ | |
6649 | ||
d6c82d7b | 6650 | if (addr_local || addr_remote) |
059ec3d9 | 6651 | { |
41313d92 | 6652 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
a2da3176 | 6653 | |
41313d92 | 6654 | if ((journal_fd = Uopen(fname, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE)) <0) |
059ec3d9 PH |
6655 | { |
6656 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s", | |
41313d92 | 6657 | fname, strerror(errno)); |
059ec3d9 PH |
6658 | return DELIVER_NOT_ATTEMPTED; |
6659 | } | |
6660 | ||
6661 | /* Set the close-on-exec flag, make the file owned by Exim, and ensure | |
6662 | that the mode is correct - the group setting doesn't always seem to get | |
6663 | set automatically. */ | |
6664 | ||
1ac6b2e7 JH |
6665 | if( fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC) |
6666 | || fchown(journal_fd, exim_uid, exim_gid) | |
6667 | || fchmod(journal_fd, SPOOL_MODE) | |
6668 | ) | |
6669 | { | |
41313d92 | 6670 | int ret = Uunlink(fname); |
1ac6b2e7 | 6671 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s", |
41313d92 | 6672 | fname, strerror(errno)); |
1ac6b2e7 JH |
6673 | if(ret && errno != ENOENT) |
6674 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", | |
41313d92 | 6675 | fname, strerror(errno)); |
1ac6b2e7 JH |
6676 | return DELIVER_NOT_ATTEMPTED; |
6677 | } | |
059ec3d9 PH |
6678 | } |
6679 | ||
6680 | ||
1ac6b2e7 | 6681 | |
059ec3d9 PH |
6682 | /* Now we can get down to the business of actually doing deliveries. Local |
6683 | deliveries are done first, then remote ones. If ever the problems of how to | |
6684 | handle fallback transports are figured out, this section can be put into a loop | |
6685 | for handling fallbacks, though the uid switching will have to be revised. */ | |
6686 | ||
f1513293 PH |
6687 | /* Precompile a regex that is used to recognize a parameter in response |
6688 | to an LHLO command, if is isn't already compiled. This may be used on both | |
6689 | local and remote LMTP deliveries. */ | |
6690 | ||
d6c82d7b JH |
6691 | if (!regex_IGNOREQUOTA) |
6692 | regex_IGNOREQUOTA = | |
6693 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
f1513293 PH |
6694 | |
6695 | /* Handle local deliveries */ | |
6696 | ||
d6c82d7b | 6697 | if (addr_local) |
059ec3d9 PH |
6698 | { |
6699 | DEBUG(D_deliver|D_transport) | |
6700 | debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n"); | |
6701 | do_local_deliveries(); | |
6702 | disable_logging = FALSE; | |
6703 | } | |
6704 | ||
6705 | /* If queue_run_local is set, we do not want to attempt any remote deliveries, | |
6706 | so just queue them all. */ | |
6707 | ||
6708 | if (queue_run_local) | |
d6c82d7b | 6709 | while (addr_remote) |
059ec3d9 PH |
6710 | { |
6711 | address_item *addr = addr_remote; | |
6712 | addr_remote = addr->next; | |
6713 | addr->next = NULL; | |
6714 | addr->basic_errno = ERRNO_LOCAL_ONLY; | |
6715 | addr->message = US"remote deliveries suppressed"; | |
6716 | (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0); | |
6717 | } | |
059ec3d9 PH |
6718 | |
6719 | /* Handle remote deliveries */ | |
6720 | ||
d6c82d7b | 6721 | if (addr_remote) |
059ec3d9 PH |
6722 | { |
6723 | DEBUG(D_deliver|D_transport) | |
6724 | debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n"); | |
6725 | ||
6726 | /* Precompile some regex that are used to recognize parameters in response | |
6727 | to an EHLO command, if they aren't already compiled. */ | |
6728 | ||
476be7e2 | 6729 | deliver_init(); |
6c1c3d1d | 6730 | |
059ec3d9 PH |
6731 | /* Now sort the addresses if required, and do the deliveries. The yield of |
6732 | do_remote_deliveries is FALSE when mua_wrapper is set and all addresses | |
6733 | cannot be delivered in one transaction. */ | |
6734 | ||
d6c82d7b | 6735 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
6736 | if (!do_remote_deliveries(FALSE)) |
6737 | { | |
6738 | log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all " | |
6739 | "be delivered in one transaction"); | |
6740 | fprintf(stderr, "delivery to smarthost failed (configuration problem)\n"); | |
6741 | ||
6742 | final_yield = DELIVER_MUA_FAILED; | |
6743 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
6744 | goto DELIVERY_TIDYUP; | |
6745 | } | |
6746 | ||
6747 | /* See if any of the addresses that failed got put on the queue for delivery | |
6748 | to their fallback hosts. We do it this way because often the same fallback | |
6749 | host is used for many domains, so all can be sent in a single transaction | |
6750 | (if appropriately configured). */ | |
6751 | ||
d6c82d7b | 6752 | if (addr_fallback && !mua_wrapper) |
059ec3d9 PH |
6753 | { |
6754 | DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n"); | |
6755 | addr_remote = addr_fallback; | |
6756 | addr_fallback = NULL; | |
d6c82d7b | 6757 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
6758 | do_remote_deliveries(TRUE); |
6759 | } | |
6760 | disable_logging = FALSE; | |
6761 | } | |
6762 | ||
6763 | ||
6764 | /* All deliveries are now complete. Ignore SIGTERM during this tidying up | |
6765 | phase, to minimize cases of half-done things. */ | |
6766 | ||
6767 | DEBUG(D_deliver) | |
6768 | debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n"); | |
6769 | ||
6770 | /* Root privilege is no longer needed */ | |
6771 | ||
6772 | exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying"); | |
6773 | ||
6774 | set_process_info("tidying up after delivering %s", message_id); | |
6775 | signal(SIGTERM, SIG_IGN); | |
6776 | ||
6777 | /* When we are acting as an MUA wrapper, the smtp transport will either have | |
47c7a64a PH |
6778 | succeeded for all addresses, or failed them all in normal cases. However, there |
6779 | are some setup situations (e.g. when a named port does not exist) that cause an | |
6780 | immediate exit with deferral of all addresses. Convert those into failures. We | |
6781 | do not ever want to retry, nor do we want to send a bounce message. */ | |
059ec3d9 PH |
6782 | |
6783 | if (mua_wrapper) | |
6784 | { | |
d6c82d7b | 6785 | if (addr_defer) |
47c7a64a PH |
6786 | { |
6787 | address_item *addr, *nextaddr; | |
d6c82d7b | 6788 | for (addr = addr_defer; addr; addr = nextaddr) |
47c7a64a PH |
6789 | { |
6790 | log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred " | |
6791 | "delivery", addr->address); | |
6792 | nextaddr = addr->next; | |
6793 | addr->next = addr_failed; | |
6794 | addr_failed = addr; | |
6795 | } | |
6796 | addr_defer = NULL; | |
6797 | } | |
6798 | ||
6799 | /* Now all should either have succeeded or failed. */ | |
6800 | ||
d6c82d7b JH |
6801 | if (!addr_failed) |
6802 | final_yield = DELIVER_MUA_SUCCEEDED; | |
6803 | else | |
059ec3d9 | 6804 | { |
c562fd30 | 6805 | host_item * host; |
d6c82d7b JH |
6806 | uschar *s = addr_failed->user_message; |
6807 | ||
6808 | if (!s) s = addr_failed->message; | |
059ec3d9 PH |
6809 | |
6810 | fprintf(stderr, "Delivery failed: "); | |
6811 | if (addr_failed->basic_errno > 0) | |
6812 | { | |
6813 | fprintf(stderr, "%s", strerror(addr_failed->basic_errno)); | |
d6c82d7b | 6814 | if (s) fprintf(stderr, ": "); |
059ec3d9 | 6815 | } |
c562fd30 JH |
6816 | if ((host = addr_failed->host_used)) |
6817 | fprintf(stderr, "H=%s [%s]: ", host->name, host->address); | |
d6c82d7b JH |
6818 | if (s) |
6819 | fprintf(stderr, "%s", CS s); | |
6820 | else if (addr_failed->basic_errno <= 0) | |
6821 | fprintf(stderr, "unknown error"); | |
059ec3d9 PH |
6822 | fprintf(stderr, "\n"); |
6823 | ||
6824 | final_yield = DELIVER_MUA_FAILED; | |
6825 | addr_failed = NULL; | |
6826 | } | |
6827 | } | |
6828 | ||
6829 | /* In a normal configuration, we now update the retry database. This is done in | |
6830 | one fell swoop at the end in order not to keep opening and closing (and | |
6831 | locking) the database. The code for handling retries is hived off into a | |
6832 | separate module for convenience. We pass it the addresses of the various | |
6833 | chains, because deferred addresses can get moved onto the failed chain if the | |
6834 | retry cutoff time has expired for all alternative destinations. Bypass the | |
6835 | updating of the database if the -N flag is set, which is a debugging thing that | |
6836 | prevents actual delivery. */ | |
6837 | ||
d6c82d7b JH |
6838 | else if (!dont_deliver) |
6839 | retry_update(&addr_defer, &addr_failed, &addr_succeed); | |
059ec3d9 | 6840 | |
f40d5be3 | 6841 | /* Send DSN for successful messages if requested */ |
6c1c3d1d WB |
6842 | addr_senddsn = NULL; |
6843 | ||
f40d5be3 | 6844 | for (addr_dsntmp = addr_succeed; addr_dsntmp; addr_dsntmp = addr_dsntmp->next) |
6c1c3d1d | 6845 | { |
6c1c3d1d | 6846 | /* af_ignore_error not honored here. it's not an error */ |
f40d5be3 | 6847 | DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n" |
9671784a JH |
6848 | "DSN: processing successful delivery address: %s\n" |
6849 | "DSN: Sender_address: %s\n" | |
6850 | "DSN: orcpt: %s flags: %d\n" | |
6851 | "DSN: envid: %s ret: %d\n" | |
6852 | "DSN: Final recipient: %s\n" | |
6853 | "DSN: Remote SMTP server supports DSN: %d\n", | |
6854 | addr_dsntmp->router->name, | |
6855 | addr_dsntmp->address, | |
6856 | sender_address, | |
6857 | addr_dsntmp->dsn_orcpt, addr_dsntmp->dsn_flags, | |
6858 | dsn_envid, dsn_ret, | |
6859 | addr_dsntmp->address, | |
6860 | addr_dsntmp->dsn_aware | |
6861 | ); | |
6c1c3d1d WB |
6862 | |
6863 | /* send report if next hop not DSN aware or a router flagged "last DSN hop" | |
6864 | and a report was requested */ | |
9671784a JH |
6865 | if ( ( addr_dsntmp->dsn_aware != dsn_support_yes |
6866 | || addr_dsntmp->dsn_flags & rf_dsnlasthop | |
6867 | ) | |
6868 | && addr_dsntmp->dsn_flags & rf_dsnflags | |
6869 | && addr_dsntmp->dsn_flags & rf_notify_success | |
6870 | ) | |
6c1c3d1d WB |
6871 | { |
6872 | /* copy and relink address_item and send report with all of them at once later */ | |
6873 | address_item *addr_next; | |
6874 | addr_next = addr_senddsn; | |
6875 | addr_senddsn = store_get(sizeof(address_item)); | |
6876 | memcpy(addr_senddsn, addr_dsntmp, sizeof(address_item)); | |
6877 | addr_senddsn->next = addr_next; | |
6878 | } | |
6879 | else | |
94431adb | 6880 | DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n"); |
6c1c3d1d WB |
6881 | } |
6882 | ||
9671784a | 6883 | if (addr_senddsn) |
6c1c3d1d WB |
6884 | { |
6885 | pid_t pid; | |
6886 | int fd; | |
6887 | ||
94431adb | 6888 | /* create exim process to send message */ |
6c1c3d1d WB |
6889 | pid = child_open_exim(&fd); |
6890 | ||
6891 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid); | |
94431adb | 6892 | |
6c1c3d1d WB |
6893 | if (pid < 0) /* Creation of child failed */ |
6894 | { | |
6895 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " | |
6896 | "create child process to send failure message: %s", getpid(), | |
6897 | getppid(), strerror(errno)); | |
6898 | ||
1c5b1499 | 6899 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n"); |
94431adb | 6900 | } |
6c1c3d1d WB |
6901 | else /* Creation of child succeeded */ |
6902 | { | |
6903 | FILE *f = fdopen(fd, "wb"); | |
6904 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
6905 | int topt = topt_add_return_path | topt_no_body; | |
45500060 | 6906 | uschar * bound; |
94431adb | 6907 | |
1c5b1499 JH |
6908 | DEBUG(D_deliver) |
6909 | debug_printf("sending error message to: %s\n", sender_address); | |
94431adb | 6910 | |
6c1c3d1d | 6911 | /* build unique id for MIME boundary */ |
45500060 JH |
6912 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
6913 | DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound); | |
94431adb | 6914 | |
c007c974 JH |
6915 | if (errors_reply_to) |
6916 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
94431adb | 6917 | |
c007c974 JH |
6918 | fprintf(f, "Auto-Submitted: auto-generated\n" |
6919 | "From: Mail Delivery System <Mailer-Daemon@%s>\n" | |
6920 | "To: %s\n" | |
6921 | "Subject: Delivery Status Notification\n" | |
6922 | "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n" | |
6923 | "MIME-Version: 1.0\n\n" | |
6924 | ||
6925 | "--%s\n" | |
6926 | "Content-type: text/plain; charset=us-ascii\n\n" | |
94431adb | 6927 | |
c007c974 | 6928 | "This message was created automatically by mail delivery software.\n" |
8864c2c4 | 6929 | " ----- The following addresses had successful delivery notifications -----\n", |
45500060 | 6930 | qualify_domain_sender, sender_address, bound, bound); |
6c1c3d1d | 6931 | |
1c5b1499 JH |
6932 | for (addr_dsntmp = addr_senddsn; addr_dsntmp; |
6933 | addr_dsntmp = addr_dsntmp->next) | |
c007c974 JH |
6934 | fprintf(f, "<%s> (relayed %s)\n\n", |
6935 | addr_dsntmp->address, | |
6936 | (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 | |
6937 | ? "via non DSN router" | |
6938 | : addr_dsntmp->dsn_aware == dsn_support_no | |
6939 | ? "to non-DSN-aware mailer" | |
6940 | : "via non \"Remote SMTP\" router" | |
6941 | ); | |
1c5b1499 | 6942 | |
c007c974 JH |
6943 | fprintf(f, "--%s\n" |
6944 | "Content-type: message/delivery-status\n\n" | |
6945 | "Reporting-MTA: dns; %s\n", | |
45500060 | 6946 | bound, smtp_active_hostname); |
c007c974 | 6947 | |
1c5b1499 JH |
6948 | if (dsn_envid) |
6949 | { /* must be decoded from xtext: see RFC 3461:6.3a */ | |
6c1c3d1d WB |
6950 | uschar *xdec_envid; |
6951 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
c007c974 | 6952 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 6953 | else |
968178ac | 6954 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 6955 | } |
c007c974 | 6956 | fputc('\n', f); |
6c1c3d1d | 6957 | |
c007c974 JH |
6958 | for (addr_dsntmp = addr_senddsn; |
6959 | addr_dsntmp; | |
6960 | addr_dsntmp = addr_dsntmp->next) | |
6c1c3d1d | 6961 | { |
c007c974 | 6962 | if (addr_dsntmp->dsn_orcpt) |
6c1c3d1d | 6963 | fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt); |
c007c974 JH |
6964 | |
6965 | fprintf(f, "Action: delivered\n" | |
6966 | "Final-Recipient: rfc822;%s\n" | |
6967 | "Status: 2.0.0\n", | |
6968 | addr_dsntmp->address); | |
6969 | ||
6970 | if (addr_dsntmp->host_used && addr_dsntmp->host_used->name) | |
1c5b1499 | 6971 | fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n", |
c007c974 | 6972 | addr_dsntmp->host_used->name); |
6c1c3d1d | 6973 | else |
1c5b1499 | 6974 | fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n", |
c007c974 | 6975 | (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 ? "DSN" : "SMTP"); |
6c1c3d1d WB |
6976 | } |
6977 | ||
45500060 | 6978 | fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound); |
94431adb | 6979 | |
6c1c3d1d WB |
6980 | fflush(f); |
6981 | transport_filter_argv = NULL; /* Just in case */ | |
6982 | return_path = sender_address; /* In case not previously set */ | |
94431adb | 6983 | |
6c1c3d1d WB |
6984 | /* Write the original email out */ |
6985 | transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0); | |
6986 | fflush(f); | |
6987 | ||
21bc4865 | 6988 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
6989 | |
6990 | fflush(f); | |
6991 | fclose(f); | |
6992 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ | |
6993 | } | |
6994 | } | |
6c1c3d1d | 6995 | |
059ec3d9 PH |
6996 | /* If any addresses failed, we must send a message to somebody, unless |
6997 | af_ignore_error is set, in which case no action is taken. It is possible for | |
6998 | several messages to get sent if there are addresses with different | |
6999 | requirements. */ | |
7000 | ||
d6c82d7b | 7001 | while (addr_failed) |
059ec3d9 PH |
7002 | { |
7003 | pid_t pid; | |
7004 | int fd; | |
7005 | uschar *logtod = tod_stamp(tod_log); | |
7006 | address_item *addr; | |
7007 | address_item *handled_addr = NULL; | |
7008 | address_item **paddr; | |
7009 | address_item *msgchain = NULL; | |
7010 | address_item **pmsgchain = &msgchain; | |
7011 | ||
7012 | /* There are weird cases when logging is disabled in the transport. However, | |
7013 | there may not be a transport (address failed by a router). */ | |
7014 | ||
7015 | disable_logging = FALSE; | |
d6c82d7b | 7016 | if (addr_failed->transport) |
059ec3d9 PH |
7017 | disable_logging = addr_failed->transport->disable_logging; |
7018 | ||
7019 | DEBUG(D_deliver) | |
7020 | debug_printf("processing failed address %s\n", addr_failed->address); | |
7021 | ||
7022 | /* There are only two ways an address in a bounce message can get here: | |
7023 | ||
7024 | (1) When delivery was initially deferred, but has now timed out (in the call | |
7025 | to retry_update() above). We can detect this by testing for | |
7026 | af_retry_timedout. If the address does not have its own errors address, | |
7027 | we arrange to ignore the error. | |
7028 | ||
7029 | (2) If delivery failures for bounce messages are being ignored. We can detect | |
7030 | this by testing for af_ignore_error. This will also be set if a bounce | |
7031 | message has been autothawed and the ignore_bounce_errors_after time has | |
7032 | passed. It might also be set if a router was explicitly configured to | |
7033 | ignore errors (errors_to = ""). | |
7034 | ||
7035 | If neither of these cases obtains, something has gone wrong. Log the | |
7036 | incident, but then ignore the error. */ | |
7037 | ||
d6c82d7b | 7038 | if (sender_address[0] == 0 && !addr_failed->prop.errors_address) |
059ec3d9 | 7039 | { |
9671784a JH |
7040 | if ( !testflag(addr_failed, af_retry_timedout) |
7041 | && !testflag(addr_failed, af_ignore_error)) | |
059ec3d9 PH |
7042 | { |
7043 | log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message " | |
7044 | "failure is neither frozen nor ignored (it's been ignored)"); | |
7045 | } | |
7046 | setflag(addr_failed, af_ignore_error); | |
7047 | } | |
7048 | ||
7049 | /* If the first address on the list has af_ignore_error set, just remove | |
7050 | it from the list, throw away any saved message file, log it, and | |
7051 | mark the recipient done. */ | |
7052 | ||
50dc7409 | 7053 | if ( testflag(addr_failed, af_ignore_error) |
9671784a | 7054 | || ( addr_failed->dsn_flags & rf_dsnflags |
d6c82d7b JH |
7055 | && (addr_failed->dsn_flags & rf_notify_failure) != rf_notify_failure |
7056 | ) ) | |
1c5b1499 | 7057 | { |
059ec3d9 PH |
7058 | addr = addr_failed; |
7059 | addr_failed = addr->next; | |
d6c82d7b | 7060 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 PH |
7061 | |
7062 | log_write(0, LOG_MAIN, "%s%s%s%s: error ignored", | |
7063 | addr->address, | |
1c5b1499 JH |
7064 | !addr->parent ? US"" : US" <", |
7065 | !addr->parent ? US"" : addr->parent->address, | |
7066 | !addr->parent ? US"" : US">"); | |
059ec3d9 PH |
7067 | |
7068 | address_done(addr, logtod); | |
7069 | child_done(addr, logtod); | |
7070 | /* Panic-dies on error */ | |
7071 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7072 | } | |
7073 | ||
7074 | /* Otherwise, handle the sending of a message. Find the error address for | |
7075 | the first address, then send a message that includes all failed addresses | |
7076 | that have the same error address. Note the bounce_recipient is a global so | |
7077 | that it can be accesssed by $bounce_recipient while creating a customized | |
7078 | error message. */ | |
7079 | ||
7080 | else | |
7081 | { | |
d6c82d7b JH |
7082 | if (!(bounce_recipient = addr_failed->prop.errors_address)) |
7083 | bounce_recipient = sender_address; | |
059ec3d9 PH |
7084 | |
7085 | /* Make a subprocess to send a message */ | |
7086 | ||
1c5b1499 | 7087 | if ((pid = child_open_exim(&fd)) < 0) |
059ec3d9 PH |
7088 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " |
7089 | "create child process to send failure message: %s", getpid(), | |
7090 | getppid(), strerror(errno)); | |
7091 | ||
7092 | /* Creation of child succeeded */ | |
7093 | ||
7094 | else | |
7095 | { | |
7096 | int ch, rc; | |
7097 | int filecount = 0; | |
7098 | int rcount = 0; | |
7099 | uschar *bcc, *emf_text; | |
7100 | FILE *f = fdopen(fd, "wb"); | |
7101 | FILE *emf = NULL; | |
7102 | BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0; | |
7103 | int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) * | |
7104 | DELIVER_IN_BUFFER_SIZE; | |
45500060 | 7105 | uschar * bound; |
0f9d3aea JH |
7106 | uschar *dsnlimitmsg; |
7107 | uschar *dsnnotifyhdr; | |
7108 | int topt; | |
059ec3d9 PH |
7109 | |
7110 | DEBUG(D_deliver) | |
7111 | debug_printf("sending error message to: %s\n", bounce_recipient); | |
7112 | ||
7113 | /* Scan the addresses for all that have the same errors address, removing | |
7114 | them from the addr_failed chain, and putting them on msgchain. */ | |
7115 | ||
7116 | paddr = &addr_failed; | |
d6c82d7b | 7117 | for (addr = addr_failed; addr; addr = *paddr) |
d43cbe25 JH |
7118 | if (Ustrcmp(bounce_recipient, addr->prop.errors_address |
7119 | ? addr->prop.errors_address : sender_address) == 0) | |
1c5b1499 | 7120 | { /* The same - dechain */ |
059ec3d9 PH |
7121 | *paddr = addr->next; |
7122 | *pmsgchain = addr; | |
7123 | addr->next = NULL; | |
7124 | pmsgchain = &(addr->next); | |
7125 | } | |
1c5b1499 JH |
7126 | else |
7127 | paddr = &addr->next; /* Not the same; skip */ | |
059ec3d9 PH |
7128 | |
7129 | /* Include X-Failed-Recipients: for automatic interpretation, but do | |
7130 | not let any one header line get too long. We do this by starting a | |
7131 | new header every 50 recipients. Omit any addresses for which the | |
7132 | "hide_child" flag is set. */ | |
7133 | ||
d6c82d7b | 7134 | for (addr = msgchain; addr; addr = addr->next) |
059ec3d9 PH |
7135 | { |
7136 | if (testflag(addr, af_hide_child)) continue; | |
7137 | if (rcount >= 50) | |
7138 | { | |
7139 | fprintf(f, "\n"); | |
7140 | rcount = 0; | |
7141 | } | |
7142 | fprintf(f, "%s%s", | |
d6c82d7b JH |
7143 | rcount++ == 0 |
7144 | ? "X-Failed-Recipients: " | |
7145 | : ",\n ", | |
7146 | testflag(addr, af_pfr) && addr->parent | |
7147 | ? string_printing(addr->parent->address) | |
7148 | : string_printing(addr->address)); | |
059ec3d9 PH |
7149 | } |
7150 | if (rcount > 0) fprintf(f, "\n"); | |
7151 | ||
7152 | /* Output the standard headers */ | |
7153 | ||
1c5b1499 | 7154 | if (errors_reply_to) |
059ec3d9 | 7155 | fprintf(f, "Reply-To: %s\n", errors_reply_to); |
456682f5 | 7156 | fprintf(f, "Auto-Submitted: auto-replied\n"); |
0e22dfd1 | 7157 | moan_write_from(f); |
059ec3d9 PH |
7158 | fprintf(f, "To: %s\n", bounce_recipient); |
7159 | ||
6c1c3d1d | 7160 | /* generate boundary string and output MIME-Headers */ |
45500060 | 7161 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 JH |
7162 | |
7163 | fprintf(f, "Content-Type: multipart/report;" | |
7164 | " report-type=delivery-status; boundary=%s\n" | |
7165 | "MIME-Version: 1.0\n", | |
45500060 | 7166 | bound); |
6c1c3d1d | 7167 | |
059ec3d9 PH |
7168 | /* Open a template file if one is provided. Log failure to open, but |
7169 | carry on - default texts will be used. */ | |
7170 | ||
c007c974 JH |
7171 | if (bounce_message_file) |
7172 | if (!(emf = Ufopen(bounce_message_file, "rb"))) | |
059ec3d9 PH |
7173 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error " |
7174 | "message texts: %s", bounce_message_file, strerror(errno)); | |
059ec3d9 PH |
7175 | |
7176 | /* Quietly copy to configured additional addresses if required. */ | |
7177 | ||
c007c974 JH |
7178 | if ((bcc = moan_check_errorcopy(bounce_recipient))) |
7179 | fprintf(f, "Bcc: %s\n", bcc); | |
059ec3d9 PH |
7180 | |
7181 | /* The texts for the message can be read from a template file; if there | |
7182 | isn't one, or if it is too short, built-in texts are used. The first | |
7183 | emf text is a Subject: and any other headers. */ | |
7184 | ||
c007c974 JH |
7185 | if ((emf_text = next_emf(emf, US"header"))) |
7186 | fprintf(f, "%s\n", emf_text); | |
7187 | else | |
059ec3d9 PH |
7188 | fprintf(f, "Subject: Mail delivery failed%s\n\n", |
7189 | to_sender? ": returning message to sender" : ""); | |
059ec3d9 | 7190 | |
6c1c3d1d | 7191 | /* output human readable part as text/plain section */ |
c007c974 JH |
7192 | fprintf(f, "--%s\n" |
7193 | "Content-type: text/plain; charset=us-ascii\n\n", | |
45500060 | 7194 | bound); |
6c1c3d1d | 7195 | |
c007c974 JH |
7196 | if ((emf_text = next_emf(emf, US"intro"))) |
7197 | fprintf(f, "%s", CS emf_text); | |
7198 | else | |
059ec3d9 PH |
7199 | { |
7200 | fprintf(f, | |
7201 | /* This message has been reworded several times. It seems to be confusing to | |
7202 | somebody, however it is worded. I have retreated to the original, simple | |
7203 | wording. */ | |
7204 | "This message was created automatically by mail delivery software.\n"); | |
c007c974 JH |
7205 | |
7206 | if (bounce_message_text) | |
7207 | fprintf(f, "%s", CS bounce_message_text); | |
059ec3d9 | 7208 | if (to_sender) |
059ec3d9 PH |
7209 | fprintf(f, |
7210 | "\nA message that you sent could not be delivered to one or more of its\n" | |
7211 | "recipients. This is a permanent error. The following address(es) failed:\n"); | |
059ec3d9 | 7212 | else |
059ec3d9 PH |
7213 | fprintf(f, |
7214 | "\nA message sent by\n\n <%s>\n\n" | |
7215 | "could not be delivered to one or more of its recipients. The following\n" | |
7216 | "address(es) failed:\n", sender_address); | |
059ec3d9 | 7217 | } |
c007c974 | 7218 | fputc('\n', f); |
059ec3d9 PH |
7219 | |
7220 | /* Process the addresses, leaving them on the msgchain if they have a | |
7221 | file name for a return message. (There has already been a check in | |
447d236c PH |
7222 | post_process_one() for the existence of data in the message file.) A TRUE |
7223 | return from print_address_information() means that the address is not | |
7224 | hidden. */ | |
059ec3d9 PH |
7225 | |
7226 | paddr = &msgchain; | |
d6c82d7b | 7227 | for (addr = msgchain; addr; addr = *paddr) |
059ec3d9 PH |
7228 | { |
7229 | if (print_address_information(addr, f, US" ", US"\n ", US"")) | |
447d236c | 7230 | print_address_error(addr, f, US""); |
059ec3d9 PH |
7231 | |
7232 | /* End the final line for the address */ | |
7233 | ||
7234 | fputc('\n', f); | |
7235 | ||
7236 | /* Leave on msgchain if there's a return file. */ | |
7237 | ||
7238 | if (addr->return_file >= 0) | |
7239 | { | |
7240 | paddr = &(addr->next); | |
7241 | filecount++; | |
7242 | } | |
7243 | ||
7244 | /* Else save so that we can tick off the recipient when the | |
7245 | message is sent. */ | |
7246 | ||
7247 | else | |
7248 | { | |
7249 | *paddr = addr->next; | |
7250 | addr->next = handled_addr; | |
7251 | handled_addr = addr; | |
7252 | } | |
7253 | } | |
7254 | ||
c007c974 | 7255 | fputc('\n', f); |
059ec3d9 PH |
7256 | |
7257 | /* Get the next text, whether we need it or not, so as to be | |
7258 | positioned for the one after. */ | |
7259 | ||
7260 | emf_text = next_emf(emf, US"generated text"); | |
7261 | ||
7262 | /* If there were any file messages passed by the local transports, | |
7263 | include them in the message. Then put the address on the handled chain. | |
7264 | In the case of a batch of addresses that were all sent to the same | |
7265 | transport, the return_file field in all of them will contain the same | |
7266 | fd, and the return_filename field in the *last* one will be set (to the | |
7267 | name of the file). */ | |
7268 | ||
c007c974 | 7269 | if (msgchain) |
059ec3d9 PH |
7270 | { |
7271 | address_item *nextaddr; | |
7272 | ||
c007c974 JH |
7273 | if (emf_text) |
7274 | fprintf(f, "%s", CS emf_text); | |
7275 | else | |
059ec3d9 PH |
7276 | fprintf(f, |
7277 | "The following text was generated during the delivery " | |
7278 | "attempt%s:\n", (filecount > 1)? "s" : ""); | |
7279 | ||
d6c82d7b | 7280 | for (addr = msgchain; addr; addr = nextaddr) |
059ec3d9 PH |
7281 | { |
7282 | FILE *fm; | |
7283 | address_item *topaddr = addr; | |
7284 | ||
7285 | /* List all the addresses that relate to this file */ | |
7286 | ||
c007c974 JH |
7287 | fputc('\n', f); |
7288 | while(addr) /* Insurance */ | |
059ec3d9 PH |
7289 | { |
7290 | print_address_information(addr, f, US"------ ", US"\n ", | |
7291 | US" ------\n"); | |
c007c974 | 7292 | if (addr->return_filename) break; |
059ec3d9 PH |
7293 | addr = addr->next; |
7294 | } | |
c007c974 | 7295 | fputc('\n', f); |
059ec3d9 PH |
7296 | |
7297 | /* Now copy the file */ | |
7298 | ||
d6c82d7b | 7299 | if (!(fm = Ufopen(addr->return_filename, "rb"))) |
059ec3d9 PH |
7300 | fprintf(f, " +++ Exim error... failed to open text file: %s\n", |
7301 | strerror(errno)); | |
7302 | else | |
7303 | { | |
7304 | while ((ch = fgetc(fm)) != EOF) fputc(ch, f); | |
f1e894f3 | 7305 | (void)fclose(fm); |
059ec3d9 PH |
7306 | } |
7307 | Uunlink(addr->return_filename); | |
7308 | ||
7309 | /* Can now add to handled chain, first fishing off the next | |
7310 | address on the msgchain. */ | |
7311 | ||
7312 | nextaddr = addr->next; | |
7313 | addr->next = handled_addr; | |
7314 | handled_addr = topaddr; | |
7315 | } | |
c007c974 | 7316 | fputc('\n', f); |
059ec3d9 PH |
7317 | } |
7318 | ||
6c1c3d1d | 7319 | /* output machine readable part */ |
8c5d388a | 7320 | #ifdef SUPPORT_I18N |
9671784a JH |
7321 | if (message_smtputf8) |
7322 | fprintf(f, "--%s\n" | |
7323 | "Content-type: message/global-delivery-status\n\n" | |
7324 | "Reporting-MTA: dns; %s\n", | |
7325 | bound, smtp_active_hostname); | |
7326 | else | |
7327 | #endif | |
7328 | fprintf(f, "--%s\n" | |
7329 | "Content-type: message/delivery-status\n\n" | |
7330 | "Reporting-MTA: dns; %s\n", | |
7331 | bound, smtp_active_hostname); | |
c007c974 JH |
7332 | |
7333 | if (dsn_envid) | |
7334 | { | |
6c1c3d1d WB |
7335 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
7336 | uschar *xdec_envid; | |
7337 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
c007c974 | 7338 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7339 | else |
968178ac | 7340 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7341 | } |
c007c974 | 7342 | fputc('\n', f); |
94431adb | 7343 | |
c007c974 | 7344 | for (addr = handled_addr; addr; addr = addr->next) |
6c1c3d1d | 7345 | { |
895fbaf2 | 7346 | host_item * hu; |
c007c974 | 7347 | fprintf(f, "Action: failed\n" |
8864c2c4 JH |
7348 | "Final-Recipient: rfc822;%s\n" |
7349 | "Status: 5.0.0\n", | |
7350 | addr->address); | |
895fbaf2 JH |
7351 | if ((hu = addr->host_used) && hu->name) |
7352 | { | |
7353 | const uschar * s; | |
23f3dc67 | 7354 | fprintf(f, "Remote-MTA: dns; %s\n", hu->name); |
895fbaf2 JH |
7355 | #ifdef EXPERIMENTAL_DSN_INFO |
7356 | if (hu->address) | |
7357 | { | |
7358 | uschar * p = hu->port == 25 | |
7359 | ? US"" : string_sprintf(":%d", hu->port); | |
7360 | fprintf(f, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p); | |
7361 | } | |
7362 | if ((s = addr->smtp_greeting) && *s) | |
7363 | fprintf(f, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s); | |
7364 | if ((s = addr->helo_response) && *s) | |
7365 | fprintf(f, "X-Remote-MTA-helo-response: X-str; %s\n", s); | |
7366 | if ((s = addr->message) && *s) | |
7367 | fprintf(f, "X-Exim-Diagnostic: X-str; %s\n", s); | |
7368 | #endif | |
7369 | print_dsn_diagnostic_code(addr, f); | |
7370 | } | |
1c5b1499 | 7371 | fputc('\n', f); |
6c1c3d1d | 7372 | } |
6c1c3d1d | 7373 | |
059ec3d9 PH |
7374 | /* Now copy the message, trying to give an intelligible comment if |
7375 | it is too long for it all to be copied. The limit isn't strictly | |
7376 | applied because of the buffering. There is, however, an option | |
7377 | to suppress copying altogether. */ | |
7378 | ||
7379 | emf_text = next_emf(emf, US"copy"); | |
7380 | ||
6c1c3d1d | 7381 | /* add message body |
94431adb | 7382 | we ignore the intro text from template and add |
6c1c3d1d | 7383 | the text for bounce_return_size_limit at the end. |
94431adb | 7384 | |
6c1c3d1d WB |
7385 | bounce_return_message is ignored |
7386 | in case RET= is defined we honor these values | |
7387 | otherwise bounce_return_body is honored. | |
94431adb | 7388 | |
6c1c3d1d WB |
7389 | bounce_return_size_limit is always honored. |
7390 | */ | |
94431adb | 7391 | |
1c5b1499 | 7392 | fprintf(f, "--%s\n", bound); |
6c1c3d1d | 7393 | |
0f9d3aea JH |
7394 | dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned"; |
7395 | dsnnotifyhdr = NULL; | |
7396 | topt = topt_add_return_path; | |
7397 | ||
6c1c3d1d WB |
7398 | /* RET=HDRS? top priority */ |
7399 | if (dsn_ret == dsn_ret_hdrs) | |
7400 | topt |= topt_no_body; | |
7401 | else | |
62b7cd08 JH |
7402 | { |
7403 | struct stat statbuf; | |
7404 | ||
6c1c3d1d WB |
7405 | /* no full body return at all? */ |
7406 | if (!bounce_return_body) | |
7407 | { | |
7408 | topt |= topt_no_body; | |
7409 | /* add header if we overrule RET=FULL */ | |
7410 | if (dsn_ret == dsn_ret_full) | |
7411 | dsnnotifyhdr = dsnlimitmsg; | |
7412 | } | |
62b7cd08 | 7413 | /* line length limited... return headers only if oversize */ |
6c1c3d1d | 7414 | /* size limited ... return headers only if limit reached */ |
62b7cd08 JH |
7415 | else if ( max_received_linelength > bounce_return_linesize_limit |
7416 | || ( bounce_return_size_limit > 0 | |
7417 | && fstat(deliver_datafile, &statbuf) == 0 | |
7418 | && statbuf.st_size > max | |
7419 | ) ) | |
7420 | { | |
7421 | topt |= topt_no_body; | |
7422 | dsnnotifyhdr = dsnlimitmsg; | |
6c1c3d1d | 7423 | } |
62b7cd08 | 7424 | } |
94431adb | 7425 | |
8c5d388a | 7426 | #ifdef SUPPORT_I18N |
9671784a JH |
7427 | if (message_smtputf8) |
7428 | fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n" | |
7429 | : "Content-type: message/global\n\n", | |
7430 | f); | |
7431 | else | |
7432 | #endif | |
7433 | fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n" | |
7434 | : "Content-type: message/rfc822\n\n", | |
7435 | f); | |
6c1c3d1d WB |
7436 | |
7437 | fflush(f); | |
7438 | transport_filter_argv = NULL; /* Just in case */ | |
7439 | return_path = sender_address; /* In case not previously set */ | |
7440 | transport_write_message(NULL, fileno(f), topt, | |
7441 | 0, dsnnotifyhdr, NULL, NULL, NULL, NULL, 0); | |
7442 | fflush(f); | |
94431adb | 7443 | |
6c1c3d1d | 7444 | /* we never add the final text. close the file */ |
c007c974 | 7445 | if (emf) |
6c1c3d1d | 7446 | (void)fclose(emf); |
94431adb | 7447 | |
45500060 | 7448 | fprintf(f, "\n--%s--\n", bound); |
059ec3d9 PH |
7449 | |
7450 | /* Close the file, which should send an EOF to the child process | |
7451 | that is receiving the message. Wait for it to finish. */ | |
7452 | ||
f1e894f3 | 7453 | (void)fclose(f); |
059ec3d9 PH |
7454 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ |
7455 | ||
7456 | /* In the test harness, let the child do it's thing first. */ | |
7457 | ||
7458 | if (running_in_test_harness) millisleep(500); | |
7459 | ||
7460 | /* If the process failed, there was some disaster in setting up the | |
7461 | error message. Unless the message is very old, ensure that addr_defer | |
7462 | is non-null, which will have the effect of leaving the message on the | |
7463 | spool. The failed addresses will get tried again next time. However, we | |
7464 | don't really want this to happen too often, so freeze the message unless | |
7465 | there are some genuine deferred addresses to try. To do this we have | |
7466 | to call spool_write_header() here, because with no genuine deferred | |
7467 | addresses the normal code below doesn't get run. */ | |
7468 | ||
7469 | if (rc != 0) | |
7470 | { | |
7471 | uschar *s = US""; | |
d6c82d7b | 7472 | if (now - received_time < retry_maximum_timeout && !addr_defer) |
059ec3d9 PH |
7473 | { |
7474 | addr_defer = (address_item *)(+1); | |
7475 | deliver_freeze = TRUE; | |
7476 | deliver_frozen_at = time(NULL); | |
7477 | /* Panic-dies on error */ | |
7478 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7479 | s = US" (frozen)"; | |
7480 | } | |
7481 | deliver_msglog("Process failed (%d) when writing error message " | |
7482 | "to %s%s", rc, bounce_recipient, s); | |
7483 | log_write(0, LOG_MAIN, "Process failed (%d) when writing error message " | |
7484 | "to %s%s", rc, bounce_recipient, s); | |
7485 | } | |
7486 | ||
7487 | /* The message succeeded. Ensure that the recipients that failed are | |
7488 | now marked finished with on the spool and their parents updated. */ | |
7489 | ||
7490 | else | |
7491 | { | |
d6c82d7b | 7492 | for (addr = handled_addr; addr; addr = addr->next) |
059ec3d9 PH |
7493 | { |
7494 | address_done(addr, logtod); | |
7495 | child_done(addr, logtod); | |
7496 | } | |
7497 | /* Panic-dies on error */ | |
7498 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7499 | } | |
7500 | } | |
7501 | } | |
7502 | } | |
7503 | ||
7504 | disable_logging = FALSE; /* In case left set */ | |
7505 | ||
7506 | /* Come here from the mua_wrapper case if routing goes wrong */ | |
7507 | ||
7508 | DELIVERY_TIDYUP: | |
7509 | ||
7510 | /* If there are now no deferred addresses, we are done. Preserve the | |
7511 | message log if so configured, and we are using them. Otherwise, sling it. | |
7512 | Then delete the message itself. */ | |
7513 | ||
d6c82d7b | 7514 | if (!addr_defer) |
059ec3d9 | 7515 | { |
41313d92 JH |
7516 | uschar * fname; |
7517 | ||
059ec3d9 PH |
7518 | if (message_logs) |
7519 | { | |
41313d92 | 7520 | fname = spool_fname(US"msglog", message_subdir, id, US""); |
059ec3d9 PH |
7521 | if (preserve_message_logs) |
7522 | { | |
7523 | int rc; | |
41313d92 JH |
7524 | uschar * moname = spool_fname(US"msglog.OLD", US"", id, US""); |
7525 | ||
7526 | if ((rc = Urename(fname, moname)) < 0) | |
059ec3d9 | 7527 | { |
41313d92 JH |
7528 | (void)directory_make(spool_directory, |
7529 | spool_sname(US"msglog.OLD", US""), | |
7530 | MSGLOG_DIRECTORY_MODE, TRUE); | |
7531 | rc = Urename(fname, moname); | |
059ec3d9 PH |
7532 | } |
7533 | if (rc < 0) | |
7534 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the " | |
41313d92 | 7535 | "msglog.OLD directory", fname); |
059ec3d9 PH |
7536 | } |
7537 | else | |
41313d92 | 7538 | if (Uunlink(fname) < 0) |
0761d44e | 7539 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 7540 | fname, strerror(errno)); |
059ec3d9 PH |
7541 | } |
7542 | ||
7543 | /* Remove the two message files. */ | |
8e669ac1 | 7544 | |
41313d92 JH |
7545 | fname = spool_fname(US"input", message_subdir, id, US"-D"); |
7546 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 7547 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 JH |
7548 | fname, strerror(errno)); |
7549 | fname = spool_fname(US"input", message_subdir, id, US"-H"); | |
7550 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 7551 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 7552 | fname, strerror(errno)); |
2ac0e484 PH |
7553 | |
7554 | /* Log the end of this message, with queue time if requested. */ | |
7555 | ||
6c6d6e48 | 7556 | if (LOGGING(queue_time_overall)) |
8e669ac1 | 7557 | log_write(0, LOG_MAIN, "Completed QT=%s", |
19050083 | 7558 | readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) ); |
2ac0e484 PH |
7559 | else |
7560 | log_write(0, LOG_MAIN, "Completed"); | |
0e8a9471 MH |
7561 | |
7562 | /* Unset deliver_freeze so that we won't try to move the spool files further down */ | |
7563 | deliver_freeze = FALSE; | |
14a465c3 | 7564 | |
0cbf2b82 | 7565 | #ifndef DISABLE_EVENT |
774ef2d7 | 7566 | (void) event_raise(event_action, US"msg:complete", NULL); |
14a465c3 | 7567 | #endif |
fa41615d | 7568 | } |
059ec3d9 PH |
7569 | |
7570 | /* If there are deferred addresses, we are keeping this message because it is | |
7571 | not yet completed. Lose any temporary files that were catching output from | |
7572 | pipes for any of the deferred addresses, handle one-time aliases, and see if | |
7573 | the message has been on the queue for so long that it is time to send a warning | |
7574 | message to the sender, unless it is a mailer-daemon. If all deferred addresses | |
7575 | have the same domain, we can set deliver_domain for the expansion of | |
7576 | delay_warning_ condition - if any of them are pipes, files, or autoreplies, use | |
7577 | the parent's domain. | |
7578 | ||
7579 | If all the deferred addresses have an error number that indicates "retry time | |
7580 | not reached", skip sending the warning message, because it won't contain the | |
7581 | reason for the delay. It will get sent at the next real delivery attempt. | |
7582 | However, if at least one address has tried, we'd better include all of them in | |
7583 | the message. | |
7584 | ||
7585 | If we can't make a process to send the message, don't worry. | |
7586 | ||
7587 | For mailing list expansions we want to send the warning message to the | |
7588 | mailing list manager. We can't do a perfect job here, as some addresses may | |
7589 | have different errors addresses, but if we take the errors address from | |
7590 | each deferred address it will probably be right in most cases. | |
7591 | ||
7592 | If addr_defer == +1, it means there was a problem sending an error message | |
7593 | for failed addresses, and there were no "real" deferred addresses. The value | |
7594 | was set just to keep the message on the spool, so there is nothing to do here. | |
7595 | */ | |
7596 | ||
7597 | else if (addr_defer != (address_item *)(+1)) | |
7598 | { | |
7599 | address_item *addr; | |
7600 | uschar *recipients = US""; | |
7601 | BOOL delivery_attempted = FALSE; | |
7602 | ||
d6c82d7b JH |
7603 | deliver_domain = testflag(addr_defer, af_pfr) |
7604 | ? addr_defer->parent->domain : addr_defer->domain; | |
059ec3d9 | 7605 | |
d6c82d7b | 7606 | for (addr = addr_defer; addr; addr = addr->next) |
059ec3d9 PH |
7607 | { |
7608 | address_item *otaddr; | |
7609 | ||
7610 | if (addr->basic_errno > ERRNO_RETRY_BASE) delivery_attempted = TRUE; | |
7611 | ||
d6c82d7b | 7612 | if (deliver_domain) |
059ec3d9 | 7613 | { |
55414b25 JH |
7614 | const uschar *d = testflag(addr, af_pfr) |
7615 | ? addr->parent->domain : addr->domain; | |
059ec3d9 PH |
7616 | |
7617 | /* The domain may be unset for an address that has never been routed | |
7618 | because the system filter froze the message. */ | |
7619 | ||
d6c82d7b JH |
7620 | if (!d || Ustrcmp(d, deliver_domain) != 0) |
7621 | deliver_domain = NULL; | |
059ec3d9 PH |
7622 | } |
7623 | ||
d6c82d7b | 7624 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 PH |
7625 | |
7626 | /* Handle the case of one-time aliases. If any address in the ancestry | |
7627 | of this one is flagged, ensure it is in the recipients list, suitably | |
7628 | flagged, and that its parent is marked delivered. */ | |
7629 | ||
d6c82d7b JH |
7630 | for (otaddr = addr; otaddr; otaddr = otaddr->parent) |
7631 | if (otaddr->onetime_parent) break; | |
059ec3d9 | 7632 | |
d6c82d7b | 7633 | if (otaddr) |
059ec3d9 PH |
7634 | { |
7635 | int i; | |
7636 | int t = recipients_count; | |
7637 | ||
7638 | for (i = 0; i < recipients_count; i++) | |
7639 | { | |
7640 | uschar *r = recipients_list[i].address; | |
7641 | if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i; | |
7642 | if (Ustrcmp(otaddr->address, r) == 0) break; | |
7643 | } | |
7644 | ||
7645 | /* Didn't find the address already in the list, and did find the | |
7646 | ultimate parent's address in the list. After adding the recipient, | |
7647 | update the errors address in the recipients list. */ | |
7648 | ||
7649 | if (i >= recipients_count && t < recipients_count) | |
7650 | { | |
7651 | DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n", | |
7652 | otaddr->address, otaddr->parent->address); | |
7653 | receive_add_recipient(otaddr->address, t); | |
d43cbe25 | 7654 | recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address; |
059ec3d9 PH |
7655 | tree_add_nonrecipient(otaddr->parent->address); |
7656 | update_spool = TRUE; | |
7657 | } | |
7658 | } | |
7659 | ||
7660 | /* Except for error messages, ensure that either the errors address for | |
7661 | this deferred address or, if there is none, the sender address, is on the | |
7662 | list of recipients for a warning message. */ | |
7663 | ||
7664 | if (sender_address[0] != 0) | |
d6c82d7b | 7665 | if (addr->prop.errors_address) |
059ec3d9 | 7666 | { |
d6c82d7b | 7667 | if (Ustrstr(recipients, addr->prop.errors_address) == NULL) |
059ec3d9 | 7668 | recipients = string_sprintf("%s%s%s", recipients, |
d6c82d7b | 7669 | (recipients[0] == 0)? "" : ",", addr->prop.errors_address); |
059ec3d9 PH |
7670 | } |
7671 | else | |
7672 | { | |
d6c82d7b | 7673 | if (Ustrstr(recipients, sender_address) == NULL) |
059ec3d9 | 7674 | recipients = string_sprintf("%s%s%s", recipients, |
d6c82d7b | 7675 | (recipients[0] == 0)? "" : ",", sender_address); |
059ec3d9 | 7676 | } |
059ec3d9 PH |
7677 | } |
7678 | ||
7679 | /* Send a warning message if the conditions are right. If the condition check | |
7680 | fails because of a lookup defer, there is nothing we can do. The warning | |
7681 | is not sent. Another attempt will be made at the next delivery attempt (if | |
7682 | it also defers). */ | |
7683 | ||
50dc7409 JH |
7684 | if ( !queue_2stage |
7685 | && delivery_attempted | |
7686 | && ( ((addr_defer->dsn_flags & rf_dsnflags) == 0) | |
7687 | || (addr_defer->dsn_flags & rf_notify_delay) == rf_notify_delay | |
7688 | ) | |
7689 | && delay_warning[1] > 0 | |
7690 | && sender_address[0] != 0 | |
d6c82d7b | 7691 | && ( !delay_warning_condition |
50dc7409 JH |
7692 | || expand_check_condition(delay_warning_condition, |
7693 | US"delay_warning", US"option") | |
7694 | ) | |
7695 | ) | |
059ec3d9 PH |
7696 | { |
7697 | int count; | |
7698 | int show_time; | |
7699 | int queue_time = time(NULL) - received_time; | |
7700 | ||
7701 | /* When running in the test harness, there's an option that allows us to | |
7702 | fudge this time so as to get repeatability of the tests. Take the first | |
7703 | time off the list. In queue runs, the list pointer gets updated in the | |
7704 | calling process. */ | |
7705 | ||
7706 | if (running_in_test_harness && fudged_queue_times[0] != 0) | |
7707 | { | |
7708 | int qt = readconf_readtime(fudged_queue_times, '/', FALSE); | |
7709 | if (qt >= 0) | |
7710 | { | |
7711 | DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n", | |
7712 | fudged_queue_times); | |
7713 | queue_time = qt; | |
7714 | } | |
7715 | } | |
7716 | ||
7717 | /* See how many warnings we should have sent by now */ | |
7718 | ||
7719 | for (count = 0; count < delay_warning[1]; count++) | |
7720 | if (queue_time < delay_warning[count+2]) break; | |
7721 | ||
7722 | show_time = delay_warning[count+1]; | |
7723 | ||
7724 | if (count >= delay_warning[1]) | |
7725 | { | |
7726 | int extra; | |
7727 | int last_gap = show_time; | |
7728 | if (count > 1) last_gap -= delay_warning[count]; | |
7729 | extra = (queue_time - delay_warning[count+1])/last_gap; | |
7730 | show_time += last_gap * extra; | |
7731 | count += extra; | |
7732 | } | |
7733 | ||
7734 | DEBUG(D_deliver) | |
7735 | { | |
7736 | debug_printf("time on queue = %s\n", readconf_printtime(queue_time)); | |
7737 | debug_printf("warning counts: required %d done %d\n", count, | |
7738 | warning_count); | |
7739 | } | |
7740 | ||
7741 | /* We have computed the number of warnings there should have been by now. | |
7742 | If there haven't been enough, send one, and up the count to what it should | |
7743 | have been. */ | |
7744 | ||
7745 | if (warning_count < count) | |
7746 | { | |
7747 | header_line *h; | |
7748 | int fd; | |
7749 | pid_t pid = child_open_exim(&fd); | |
7750 | ||
7751 | if (pid > 0) | |
7752 | { | |
7753 | uschar *wmf_text; | |
7754 | FILE *wmf = NULL; | |
7755 | FILE *f = fdopen(fd, "wb"); | |
45500060 | 7756 | uschar * bound; |
62b7cd08 | 7757 | int topt; |
059ec3d9 | 7758 | |
c007c974 | 7759 | if (warn_message_file) |
d6c82d7b | 7760 | if (!(wmf = Ufopen(warn_message_file, "rb"))) |
059ec3d9 PH |
7761 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning " |
7762 | "message texts: %s", warn_message_file, strerror(errno)); | |
059ec3d9 PH |
7763 | |
7764 | warnmsg_recipients = recipients; | |
d6c82d7b JH |
7765 | warnmsg_delay = queue_time < 120*60 |
7766 | ? string_sprintf("%d minutes", show_time/60) | |
7767 | : string_sprintf("%d hours", show_time/3600); | |
059ec3d9 | 7768 | |
c007c974 | 7769 | if (errors_reply_to) |
059ec3d9 | 7770 | fprintf(f, "Reply-To: %s\n", errors_reply_to); |
456682f5 | 7771 | fprintf(f, "Auto-Submitted: auto-replied\n"); |
0e22dfd1 | 7772 | moan_write_from(f); |
059ec3d9 PH |
7773 | fprintf(f, "To: %s\n", recipients); |
7774 | ||
6c1c3d1d | 7775 | /* generated boundary string and output MIME-Headers */ |
45500060 | 7776 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 JH |
7777 | |
7778 | fprintf(f, "Content-Type: multipart/report;" | |
7779 | " report-type=delivery-status; boundary=%s\n" | |
7780 | "MIME-Version: 1.0\n", | |
45500060 | 7781 | bound); |
6c1c3d1d | 7782 | |
c007c974 | 7783 | if ((wmf_text = next_emf(wmf, US"header"))) |
059ec3d9 PH |
7784 | fprintf(f, "%s\n", wmf_text); |
7785 | else | |
7786 | fprintf(f, "Subject: Warning: message %s delayed %s\n\n", | |
7787 | message_id, warnmsg_delay); | |
7788 | ||
6c1c3d1d | 7789 | /* output human readable part as text/plain section */ |
c007c974 JH |
7790 | fprintf(f, "--%s\n" |
7791 | "Content-type: text/plain; charset=us-ascii\n\n", | |
45500060 | 7792 | bound); |
6c1c3d1d | 7793 | |
c007c974 JH |
7794 | if ((wmf_text = next_emf(wmf, US"intro"))) |
7795 | fprintf(f, "%s", CS wmf_text); | |
7796 | else | |
059ec3d9 PH |
7797 | { |
7798 | fprintf(f, | |
7799 | "This message was created automatically by mail delivery software.\n"); | |
7800 | ||
7801 | if (Ustrcmp(recipients, sender_address) == 0) | |
7802 | fprintf(f, | |
7803 | "A message that you sent has not yet been delivered to one or more of its\n" | |
7804 | "recipients after more than "); | |
7805 | ||
c007c974 JH |
7806 | else |
7807 | fprintf(f, | |
059ec3d9 PH |
7808 | "A message sent by\n\n <%s>\n\n" |
7809 | "has not yet been delivered to one or more of its recipients after more than \n", | |
c007c974 | 7810 | sender_address); |
059ec3d9 | 7811 | |
c007c974 JH |
7812 | fprintf(f, "%s on the queue on %s.\n\n" |
7813 | "The message identifier is: %s\n", | |
7814 | warnmsg_delay, primary_hostname, message_id); | |
059ec3d9 | 7815 | |
d6c82d7b | 7816 | for (h = header_list; h; h = h->next) |
059ec3d9 PH |
7817 | if (strncmpic(h->text, US"Subject:", 8) == 0) |
7818 | fprintf(f, "The subject of the message is: %s", h->text + 9); | |
7819 | else if (strncmpic(h->text, US"Date:", 5) == 0) | |
7820 | fprintf(f, "The date of the message is: %s", h->text + 6); | |
c007c974 | 7821 | fputc('\n', f); |
059ec3d9 PH |
7822 | |
7823 | fprintf(f, "The address%s to which the message has not yet been " | |
7824 | "delivered %s:\n", | |
c007c974 JH |
7825 | !addr_defer->next ? "" : "es", |
7826 | !addr_defer->next ? "is": "are"); | |
059ec3d9 PH |
7827 | } |
7828 | ||
447d236c | 7829 | /* List the addresses, with error information if allowed */ |
059ec3d9 | 7830 | |
6c1c3d1d WB |
7831 | /* store addr_defer for machine readable part */ |
7832 | address_item *addr_dsndefer = addr_defer; | |
c007c974 JH |
7833 | fputc('\n', f); |
7834 | while (addr_defer) | |
059ec3d9 PH |
7835 | { |
7836 | address_item *addr = addr_defer; | |
7837 | addr_defer = addr->next; | |
447d236c PH |
7838 | if (print_address_information(addr, f, US" ", US"\n ", US"")) |
7839 | print_address_error(addr, f, US"Delay reason: "); | |
c007c974 | 7840 | fputc('\n', f); |
059ec3d9 | 7841 | } |
c007c974 | 7842 | fputc('\n', f); |
059ec3d9 PH |
7843 | |
7844 | /* Final text */ | |
7845 | ||
c007c974 | 7846 | if (wmf) |
059ec3d9 | 7847 | { |
c007c974 JH |
7848 | if ((wmf_text = next_emf(wmf, US"final"))) |
7849 | fprintf(f, "%s", CS wmf_text); | |
f1e894f3 | 7850 | (void)fclose(wmf); |
059ec3d9 PH |
7851 | } |
7852 | else | |
7853 | { | |
7854 | fprintf(f, | |
7855 | "No action is required on your part. Delivery attempts will continue for\n" | |
7856 | "some time, and this warning may be repeated at intervals if the message\n" | |
7857 | "remains undelivered. Eventually the mail delivery software will give up,\n" | |
7858 | "and when that happens, the message will be returned to you.\n"); | |
7859 | } | |
7860 | ||
6c1c3d1d | 7861 | /* output machine readable part */ |
c007c974 JH |
7862 | fprintf(f, "\n--%s\n" |
7863 | "Content-type: message/delivery-status\n\n" | |
7864 | "Reporting-MTA: dns; %s\n", | |
45500060 | 7865 | bound, |
c007c974 | 7866 | smtp_active_hostname); |
94431adb | 7867 | |
c007c974 JH |
7868 | |
7869 | if (dsn_envid) | |
7870 | { | |
6c1c3d1d WB |
7871 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
7872 | uschar *xdec_envid; | |
7873 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
7874 | fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid); | |
7875 | else | |
968178ac | 7876 | fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7877 | } |
c007c974 | 7878 | fputc('\n', f); |
6c1c3d1d | 7879 | |
1c5b1499 | 7880 | for ( ; addr_dsndefer; addr_dsndefer = addr_dsndefer->next) |
6c1c3d1d | 7881 | { |
c007c974 | 7882 | if (addr_dsndefer->dsn_orcpt) |
1c5b1499 | 7883 | fprintf(f, "Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt); |
c007c974 | 7884 | |
1c5b1499 JH |
7885 | fprintf(f, "Action: delayed\n" |
7886 | "Final-Recipient: rfc822;%s\n" | |
7887 | "Status: 4.0.0\n", | |
7888 | addr_dsndefer->address); | |
c007c974 | 7889 | if (addr_dsndefer->host_used && addr_dsndefer->host_used->name) |
21bc4865 | 7890 | { |
94431adb | 7891 | fprintf(f, "Remote-MTA: dns; %s\n", |
21bc4865 WB |
7892 | addr_dsndefer->host_used->name); |
7893 | print_dsn_diagnostic_code(addr_dsndefer, f); | |
7894 | } | |
1c5b1499 | 7895 | fputc('\n', f); |
6c1c3d1d WB |
7896 | } |
7897 | ||
1c5b1499 | 7898 | fprintf(f, "--%s\n" |
c007c974 | 7899 | "Content-type: text/rfc822-headers\n\n", |
45500060 | 7900 | bound); |
6c1c3d1d WB |
7901 | |
7902 | fflush(f); | |
7903 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
62b7cd08 | 7904 | topt = topt_add_return_path | topt_no_body; |
6c1c3d1d WB |
7905 | transport_filter_argv = NULL; /* Just in case */ |
7906 | return_path = sender_address; /* In case not previously set */ | |
7907 | /* Write the original email out */ | |
7908 | transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0); | |
7909 | fflush(f); | |
7910 | ||
45500060 | 7911 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
7912 | |
7913 | fflush(f); | |
6c1c3d1d | 7914 | |
059ec3d9 PH |
7915 | /* Close and wait for child process to complete, without a timeout. |
7916 | If there's an error, don't update the count. */ | |
7917 | ||
f1e894f3 | 7918 | (void)fclose(f); |
059ec3d9 PH |
7919 | if (child_close(pid, 0) == 0) |
7920 | { | |
7921 | warning_count = count; | |
7922 | update_spool = TRUE; /* Ensure spool rewritten */ | |
7923 | } | |
7924 | } | |
7925 | } | |
7926 | } | |
7927 | ||
7928 | /* Clear deliver_domain */ | |
7929 | ||
7930 | deliver_domain = NULL; | |
7931 | ||
7932 | /* If this was a first delivery attempt, unset the first time flag, and | |
7933 | ensure that the spool gets updated. */ | |
7934 | ||
7935 | if (deliver_firsttime) | |
7936 | { | |
7937 | deliver_firsttime = FALSE; | |
7938 | update_spool = TRUE; | |
7939 | } | |
7940 | ||
7941 | /* If delivery was frozen and freeze_tell is set, generate an appropriate | |
7942 | message, unless the message is a local error message (to avoid loops). Then | |
7943 | log the freezing. If the text in "frozen_info" came from a system filter, | |
7944 | it has been escaped into printing characters so as not to mess up log lines. | |
7945 | For the "tell" message, we turn \n back into newline. Also, insert a newline | |
7946 | near the start instead of the ": " string. */ | |
7947 | ||
7948 | if (deliver_freeze) | |
7949 | { | |
d6c82d7b | 7950 | if (freeze_tell && freeze_tell[0] != 0 && !local_error_message) |
059ec3d9 PH |
7951 | { |
7952 | uschar *s = string_copy(frozen_info); | |
7953 | uschar *ss = Ustrstr(s, " by the system filter: "); | |
7954 | ||
7955 | if (ss != NULL) | |
7956 | { | |
7957 | ss[21] = '.'; | |
7958 | ss[22] = '\n'; | |
7959 | } | |
7960 | ||
7961 | ss = s; | |
7962 | while (*ss != 0) | |
7963 | { | |
7964 | if (*ss == '\\' && ss[1] == 'n') | |
7965 | { | |
7966 | *ss++ = ' '; | |
7967 | *ss++ = '\n'; | |
7968 | } | |
7969 | else ss++; | |
7970 | } | |
7971 | moan_tell_someone(freeze_tell, addr_defer, US"Message frozen", | |
7972 | "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id, | |
7973 | s, sender_address); | |
7974 | } | |
7975 | ||
7976 | /* Log freezing just before we update the -H file, to minimize the chance | |
7977 | of a race problem. */ | |
7978 | ||
7979 | deliver_msglog("*** Frozen%s\n", frozen_info); | |
7980 | log_write(0, LOG_MAIN, "Frozen%s", frozen_info); | |
7981 | } | |
7982 | ||
7983 | /* If there have been any updates to the non-recipients list, or other things | |
7984 | that get written to the spool, we must now update the spool header file so | |
7985 | that it has the right information for the next delivery attempt. If there | |
7986 | was more than one address being delivered, the header_change update is done | |
7987 | earlier, in case one succeeds and then something crashes. */ | |
7988 | ||
7989 | DEBUG(D_deliver) | |
7990 | debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n", | |
7991 | update_spool, header_rewritten); | |
7992 | ||
7993 | if (update_spool || header_rewritten) | |
7994 | /* Panic-dies on error */ | |
7995 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7996 | } | |
7997 | ||
7998 | /* Finished with the message log. If the message is complete, it will have | |
7999 | been unlinked or renamed above. */ | |
8000 | ||
f1e894f3 | 8001 | if (message_logs) (void)fclose(message_log); |
059ec3d9 PH |
8002 | |
8003 | /* Now we can close and remove the journal file. Its only purpose is to record | |
8004 | successfully completed deliveries asap so that this information doesn't get | |
8005 | lost if Exim (or the machine) crashes. Forgetting about a failed delivery is | |
8006 | not serious, as trying it again is not harmful. The journal might not be open | |
8007 | if all addresses were deferred at routing or directing. Nevertheless, we must | |
8008 | remove it if it exists (may have been lying around from a crash during the | |
8009 | previous delivery attempt). We don't remove the journal if a delivery | |
8010 | subprocess failed to pass back delivery information; this is controlled by | |
8011 | the remove_journal flag. When the journal is left, we also don't move the | |
8012 | message off the main spool if frozen and the option is set. It should get moved | |
8013 | at the next attempt, after the journal has been inspected. */ | |
8014 | ||
f1e894f3 | 8015 | if (journal_fd >= 0) (void)close(journal_fd); |
059ec3d9 PH |
8016 | |
8017 | if (remove_journal) | |
8018 | { | |
41313d92 JH |
8019 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
8020 | ||
8021 | if (Uunlink(fname) < 0 && errno != ENOENT) | |
8022 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", fname, | |
059ec3d9 PH |
8023 | strerror(errno)); |
8024 | ||
8025 | /* Move the message off the spool if reqested */ | |
8026 | ||
a7538db1 | 8027 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
059ec3d9 PH |
8028 | if (deliver_freeze && move_frozen_messages) |
8029 | (void)spool_move_message(id, message_subdir, US"", US"F"); | |
a7538db1 | 8030 | #endif |
059ec3d9 PH |
8031 | } |
8032 | ||
8033 | /* Closing the data file frees the lock; if the file has been unlinked it | |
8034 | will go away. Otherwise the message becomes available for another process | |
8035 | to try delivery. */ | |
8036 | ||
f1e894f3 | 8037 | (void)close(deliver_datafile); |
059ec3d9 PH |
8038 | deliver_datafile = -1; |
8039 | DEBUG(D_deliver) debug_printf("end delivery of %s\n", id); | |
8040 | ||
8041 | /* It is unlikely that there will be any cached resources, since they are | |
8042 | released after routing, and in the delivery subprocesses. However, it's | |
8043 | possible for an expansion for something afterwards (for example, | |
8044 | expand_check_condition) to do a lookup. We must therefore be sure everything is | |
8045 | released. */ | |
8046 | ||
8047 | search_tidyup(); | |
faa05a93 | 8048 | acl_where = ACL_WHERE_UNKNOWN; |
059ec3d9 PH |
8049 | return final_yield; |
8050 | } | |
8051 | ||
476be7e2 JH |
8052 | |
8053 | ||
8054 | void | |
8055 | deliver_init(void) | |
8056 | { | |
8057 | if (!regex_PIPELINING) regex_PIPELINING = | |
8058 | regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE); | |
8059 | ||
8060 | if (!regex_SIZE) regex_SIZE = | |
8061 | regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE); | |
8062 | ||
8063 | if (!regex_AUTH) regex_AUTH = | |
8064 | regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)", | |
8065 | FALSE, TRUE); | |
8066 | ||
8067 | #ifdef SUPPORT_TLS | |
8068 | if (!regex_STARTTLS) regex_STARTTLS = | |
8069 | regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE); | |
8070 | #endif | |
8071 | ||
8072 | #ifndef DISABLE_PRDR | |
8073 | if (!regex_PRDR) regex_PRDR = | |
8074 | regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE); | |
8075 | #endif | |
8076 | ||
8c5d388a | 8077 | #ifdef SUPPORT_I18N |
7ade712c JH |
8078 | if (!regex_UTF8) regex_UTF8 = |
8079 | regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE); | |
8080 | #endif | |
8081 | ||
476be7e2 JH |
8082 | if (!regex_DSN) regex_DSN = |
8083 | regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE); | |
8084 | ||
8085 | if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA = | |
8086 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
8087 | } | |
8088 | ||
8089 | ||
a39bd74d JB |
8090 | uschar * |
8091 | deliver_get_sender_address (uschar * id) | |
8092 | { | |
dadff1d4 HSHR |
8093 | int rc; |
8094 | uschar * new_sender_address, | |
8095 | * save_sender_address; | |
789f8a4f | 8096 | BOOL save_qr = queue_running; |
41313d92 | 8097 | uschar * spoolname; |
dadff1d4 | 8098 | |
789f8a4f JH |
8099 | /* make spool_open_datafile non-noisy on fail */ |
8100 | ||
8101 | queue_running = TRUE; | |
8102 | ||
8103 | /* Side effect: message_subdir is set for the (possibly split) spool directory */ | |
8104 | ||
8105 | deliver_datafile = spool_open_datafile(id); | |
8106 | queue_running = save_qr; | |
8107 | if (deliver_datafile < 0) | |
a39bd74d JB |
8108 | return NULL; |
8109 | ||
dadff1d4 HSHR |
8110 | /* Save and restore the global sender_address. I'm not sure if we should |
8111 | not save/restore all the other global variables too, because | |
8112 | spool_read_header() may change all of them. But OTOH, when this | |
8113 | deliver_get_sender_address() gets called, the current message is done | |
8114 | already and nobody needs the globals anymore. (HS12, 2015-08-21) */ | |
8115 | ||
41313d92 | 8116 | spoolname = string_sprintf("%s-H", id); |
dadff1d4 HSHR |
8117 | save_sender_address = sender_address; |
8118 | ||
8119 | rc = spool_read_header(spoolname, TRUE, TRUE); | |
8120 | ||
8121 | new_sender_address = sender_address; | |
8122 | sender_address = save_sender_address; | |
8123 | ||
8124 | if (rc != spool_read_OK) | |
a39bd74d JB |
8125 | return NULL; |
8126 | ||
dadff1d4 HSHR |
8127 | assert(new_sender_address); |
8128 | ||
a39bd74d JB |
8129 | (void)close(deliver_datafile); |
8130 | deliver_datafile = -1; | |
8131 | ||
dadff1d4 | 8132 | return new_sender_address; |
a39bd74d JB |
8133 | } |
8134 | ||
67d81c10 JH |
8135 | /* vi: aw ai sw=2 |
8136 | */ | |
059ec3d9 | 8137 | /* End of deliver.c */ |