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420a0d19 CE |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
2ea97746 | 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
420a0d19 CE |
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" | |
2ea97746 CE |
12 | #include "transports/smtp.h" |
13 | #include <sys/uio.h> | |
14 | #include <assert.h> | |
420a0d19 CE |
15 | |
16 | ||
17 | /* Data block for keeping track of subprocesses for parallel remote | |
18 | delivery. */ | |
19 | ||
20 | typedef struct pardata { | |
21 | address_item *addrlist; /* chain of addresses */ | |
22 | address_item *addr; /* next address data expected for */ | |
23 | pid_t pid; /* subprocess pid */ | |
24 | int fd; /* pipe fd for getting result from subprocess */ | |
25 | int transport_count; /* returned transport count value */ | |
26 | BOOL done; /* no more data needed */ | |
27 | uschar *msg; /* error message */ | |
28 | uschar *return_path; /* return_path for these addresses */ | |
29 | } pardata; | |
30 | ||
31 | /* Values for the process_recipients variable */ | |
32 | ||
33 | enum { RECIP_ACCEPT, RECIP_IGNORE, RECIP_DEFER, | |
34 | RECIP_FAIL, RECIP_FAIL_FILTER, RECIP_FAIL_TIMEOUT, | |
35 | RECIP_FAIL_LOOP}; | |
36 | ||
37 | /* Mutually recursive functions for marking addresses done. */ | |
38 | ||
39 | static void child_done(address_item *, uschar *); | |
40 | static void address_done(address_item *, uschar *); | |
41 | ||
42 | /* Table for turning base-62 numbers into binary */ | |
43 | ||
44 | static uschar tab62[] = | |
45 | {0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, /* 0-9 */ | |
46 | 0,10,11,12,13,14,15,16,17,18,19,20, /* A-K */ | |
47 | 21,22,23,24,25,26,27,28,29,30,31,32, /* L-W */ | |
48 | 33,34,35, 0, 0, 0, 0, 0, /* X-Z */ | |
49 | 0,36,37,38,39,40,41,42,43,44,45,46, /* a-k */ | |
50 | 47,48,49,50,51,52,53,54,55,56,57,58, /* l-w */ | |
51 | 59,60,61}; /* x-z */ | |
52 | ||
53 | ||
54 | /************************************************* | |
55 | * Local static variables * | |
56 | *************************************************/ | |
57 | ||
58 | /* addr_duplicate is global because it needs to be seen from the Envelope-To | |
59 | writing code. */ | |
60 | ||
61 | static address_item *addr_defer = NULL; | |
62 | static address_item *addr_failed = NULL; | |
63 | static address_item *addr_fallback = NULL; | |
64 | static address_item *addr_local = NULL; | |
65 | static address_item *addr_new = NULL; | |
66 | static address_item *addr_remote = NULL; | |
67 | static address_item *addr_route = NULL; | |
68 | static address_item *addr_succeed = NULL; | |
420a0d19 CE |
69 | static address_item *addr_dsntmp = NULL; |
70 | static address_item *addr_senddsn = NULL; | |
420a0d19 CE |
71 | |
72 | static FILE *message_log = NULL; | |
73 | static BOOL update_spool; | |
74 | static BOOL remove_journal; | |
75 | static int parcount = 0; | |
76 | static pardata *parlist = NULL; | |
77 | static int return_count; | |
78 | static uschar *frozen_info = US""; | |
79 | static uschar *used_return_path = NULL; | |
80 | ||
420a0d19 CE |
81 | |
82 | ||
2ea97746 CE |
83 | /************************************************* |
84 | * read as much as requested * | |
85 | *************************************************/ | |
86 | ||
87 | /* The syscall read(2) doesn't always returns as much as we want. For | |
88 | several reasons it might get less. (Not talking about signals, as syscalls | |
89 | are restartable). When reading from a network or pipe connection the sender | |
90 | might send in smaller chunks, with delays between these chunks. The read(2) | |
91 | may return such a chunk. | |
92 | ||
93 | The more the writer writes and the smaller the pipe between write and read is, | |
94 | the more we get the chance of reading leass than requested. (See bug 2130) | |
95 | ||
96 | This function read(2)s until we got all the data we *requested*. | |
97 | ||
98 | Note: This function may block. Use it only if you're sure about the | |
99 | amount of data you will get. | |
100 | ||
101 | Argument: | |
102 | fd the file descriptor to read from | |
103 | buffer pointer to a buffer of size len | |
104 | len the requested(!) amount of bytes | |
105 | ||
106 | Returns: the amount of bytes read | |
107 | */ | |
108 | static ssize_t | |
109 | readn(int fd, void * buffer, size_t len) | |
110 | { | |
111 | void * next = buffer; | |
112 | void * end = buffer + len; | |
113 | ||
114 | while (next < end) | |
115 | { | |
116 | ssize_t got = read(fd, next, end - next); | |
117 | ||
118 | /* I'm not sure if there are signals that can interrupt us, | |
119 | for now I assume the worst */ | |
120 | if (got == -1 && errno == EINTR) continue; | |
121 | if (got <= 0) return next - buffer; | |
122 | next += got; | |
123 | } | |
124 | ||
125 | return len; | |
126 | } | |
127 | ||
420a0d19 CE |
128 | |
129 | /************************************************* | |
130 | * Make a new address item * | |
131 | *************************************************/ | |
132 | ||
133 | /* This function gets the store and initializes with default values. The | |
134 | transport_return value defaults to DEFER, so that any unexpected failure to | |
135 | deliver does not wipe out the message. The default unique string is set to a | |
136 | copy of the address, so that its domain can be lowercased. | |
137 | ||
138 | Argument: | |
139 | address the RFC822 address string | |
140 | copy force a copy of the address | |
141 | ||
142 | Returns: a pointer to an initialized address_item | |
143 | */ | |
144 | ||
145 | address_item * | |
146 | deliver_make_addr(uschar *address, BOOL copy) | |
147 | { | |
148 | address_item *addr = store_get(sizeof(address_item)); | |
149 | *addr = address_defaults; | |
150 | if (copy) address = string_copy(address); | |
151 | addr->address = address; | |
152 | addr->unique = string_copy(address); | |
153 | return addr; | |
154 | } | |
155 | ||
156 | ||
157 | ||
158 | ||
159 | /************************************************* | |
160 | * Set expansion values for an address * | |
161 | *************************************************/ | |
162 | ||
163 | /* Certain expansion variables are valid only when handling an address or | |
164 | address list. This function sets them up or clears the values, according to its | |
165 | argument. | |
166 | ||
167 | Arguments: | |
168 | addr the address in question, or NULL to clear values | |
169 | Returns: nothing | |
170 | */ | |
171 | ||
172 | void | |
173 | deliver_set_expansions(address_item *addr) | |
174 | { | |
2ea97746 | 175 | if (!addr) |
420a0d19 | 176 | { |
2ea97746 CE |
177 | const uschar ***p = address_expansions; |
178 | while (*p) **p++ = NULL; | |
420a0d19 CE |
179 | return; |
180 | } | |
181 | ||
182 | /* Exactly what gets set depends on whether there is one or more addresses, and | |
183 | what they contain. These first ones are always set, taking their values from | |
184 | the first address. */ | |
185 | ||
2ea97746 | 186 | if (!addr->host_list) |
420a0d19 CE |
187 | { |
188 | deliver_host = deliver_host_address = US""; | |
2ea97746 | 189 | deliver_host_port = 0; |
420a0d19 CE |
190 | } |
191 | else | |
192 | { | |
193 | deliver_host = addr->host_list->name; | |
194 | deliver_host_address = addr->host_list->address; | |
2ea97746 | 195 | deliver_host_port = addr->host_list->port; |
420a0d19 CE |
196 | } |
197 | ||
198 | deliver_recipients = addr; | |
2ea97746 CE |
199 | deliver_address_data = addr->prop.address_data; |
200 | deliver_domain_data = addr->prop.domain_data; | |
201 | deliver_localpart_data = addr->prop.localpart_data; | |
420a0d19 CE |
202 | |
203 | /* These may be unset for multiple addresses */ | |
204 | ||
205 | deliver_domain = addr->domain; | |
206 | self_hostname = addr->self_hostname; | |
207 | ||
208 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
209 | bmi_deliver = 1; /* deliver by default */ | |
210 | bmi_alt_location = NULL; | |
211 | bmi_base64_verdict = NULL; | |
212 | bmi_base64_tracker_verdict = NULL; | |
213 | #endif | |
214 | ||
215 | /* If there's only one address we can set everything. */ | |
216 | ||
2ea97746 | 217 | if (!addr->next) |
420a0d19 CE |
218 | { |
219 | address_item *addr_orig; | |
220 | ||
221 | deliver_localpart = addr->local_part; | |
222 | deliver_localpart_prefix = addr->prefix; | |
223 | deliver_localpart_suffix = addr->suffix; | |
224 | ||
2ea97746 | 225 | for (addr_orig = addr; addr_orig->parent; addr_orig = addr_orig->parent) ; |
420a0d19 CE |
226 | deliver_domain_orig = addr_orig->domain; |
227 | ||
228 | /* Re-instate any prefix and suffix in the original local part. In all | |
229 | normal cases, the address will have a router associated with it, and we can | |
230 | choose the caseful or caseless version accordingly. However, when a system | |
231 | filter sets up a pipe, file, or autoreply delivery, no router is involved. | |
232 | In this case, though, there won't be any prefix or suffix to worry about. */ | |
233 | ||
2ea97746 CE |
234 | deliver_localpart_orig = !addr_orig->router |
235 | ? addr_orig->local_part | |
236 | : addr_orig->router->caseful_local_part | |
237 | ? addr_orig->cc_local_part | |
238 | : addr_orig->lc_local_part; | |
420a0d19 CE |
239 | |
240 | /* If there's a parent, make its domain and local part available, and if | |
241 | delivering to a pipe or file, or sending an autoreply, get the local | |
242 | part from the parent. For pipes and files, put the pipe or file string | |
243 | into address_pipe and address_file. */ | |
244 | ||
2ea97746 | 245 | if (addr->parent) |
420a0d19 CE |
246 | { |
247 | deliver_domain_parent = addr->parent->domain; | |
2ea97746 CE |
248 | deliver_localpart_parent = !addr->parent->router |
249 | ? addr->parent->local_part | |
250 | : addr->parent->router->caseful_local_part | |
251 | ? addr->parent->cc_local_part | |
252 | : addr->parent->lc_local_part; | |
420a0d19 CE |
253 | |
254 | /* File deliveries have their own flag because they need to be picked out | |
255 | as special more often. */ | |
256 | ||
257 | if (testflag(addr, af_pfr)) | |
258 | { | |
2ea97746 CE |
259 | if (testflag(addr, af_file)) address_file = addr->local_part; |
260 | else if (deliver_localpart[0] == '|') address_pipe = addr->local_part; | |
420a0d19 CE |
261 | deliver_localpart = addr->parent->local_part; |
262 | deliver_localpart_prefix = addr->parent->prefix; | |
263 | deliver_localpart_suffix = addr->parent->suffix; | |
264 | } | |
265 | } | |
266 | ||
267 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
268 | /* Set expansion variables related to Brightmail AntiSpam */ | |
269 | bmi_base64_verdict = bmi_get_base64_verdict(deliver_localpart_orig, deliver_domain_orig); | |
270 | bmi_base64_tracker_verdict = bmi_get_base64_tracker_verdict(bmi_base64_verdict); | |
271 | /* get message delivery status (0 - don't deliver | 1 - deliver) */ | |
272 | bmi_deliver = bmi_get_delivery_status(bmi_base64_verdict); | |
273 | /* if message is to be delivered, get eventual alternate location */ | |
2ea97746 | 274 | if (bmi_deliver == 1) |
420a0d19 | 275 | bmi_alt_location = bmi_get_alt_location(bmi_base64_verdict); |
420a0d19 CE |
276 | #endif |
277 | ||
278 | } | |
279 | ||
280 | /* For multiple addresses, don't set local part, and leave the domain and | |
281 | self_hostname set only if it is the same for all of them. It is possible to | |
282 | have multiple pipe and file addresses, but only when all addresses have routed | |
283 | to the same pipe or file. */ | |
284 | ||
285 | else | |
286 | { | |
287 | address_item *addr2; | |
288 | if (testflag(addr, af_pfr)) | |
289 | { | |
2ea97746 CE |
290 | if (testflag(addr, af_file)) address_file = addr->local_part; |
291 | else if (addr->local_part[0] == '|') address_pipe = addr->local_part; | |
420a0d19 | 292 | } |
2ea97746 | 293 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
420a0d19 | 294 | { |
2ea97746 | 295 | if (deliver_domain && Ustrcmp(deliver_domain, addr2->domain) != 0) |
420a0d19 | 296 | deliver_domain = NULL; |
2ea97746 CE |
297 | if ( self_hostname |
298 | && ( !addr2->self_hostname | |
299 | || Ustrcmp(self_hostname, addr2->self_hostname) != 0 | |
300 | ) ) | |
420a0d19 | 301 | self_hostname = NULL; |
2ea97746 | 302 | if (!deliver_domain && !self_hostname) break; |
420a0d19 CE |
303 | } |
304 | } | |
305 | } | |
306 | ||
307 | ||
308 | ||
309 | ||
310 | /************************************************* | |
311 | * Open a msglog file * | |
312 | *************************************************/ | |
313 | ||
314 | /* This function is used both for normal message logs, and for files in the | |
315 | msglog directory that are used to catch output from pipes. Try to create the | |
316 | directory if it does not exist. From release 4.21, normal message logs should | |
317 | be created when the message is received. | |
318 | ||
2ea97746 CE |
319 | Called from deliver_message(), can be operating as root. |
320 | ||
420a0d19 CE |
321 | Argument: |
322 | filename the file name | |
323 | mode the mode required | |
324 | error used for saying what failed | |
325 | ||
326 | Returns: a file descriptor, or -1 (with errno set) | |
327 | */ | |
328 | ||
329 | static int | |
330 | open_msglog_file(uschar *filename, int mode, uschar **error) | |
331 | { | |
2ea97746 | 332 | int fd, i; |
420a0d19 | 333 | |
2ea97746 | 334 | for (i = 2; i > 0; i--) |
420a0d19 | 335 | { |
2ea97746 CE |
336 | fd = Uopen(filename, |
337 | #ifdef O_CLOEXEC | |
338 | O_CLOEXEC | | |
339 | #endif | |
340 | #ifdef O_NOFOLLOW | |
341 | O_NOFOLLOW | | |
342 | #endif | |
343 | O_WRONLY|O_APPEND|O_CREAT, mode); | |
344 | if (fd >= 0) | |
420a0d19 | 345 | { |
2ea97746 CE |
346 | /* Set the close-on-exec flag and change the owner to the exim uid/gid (this |
347 | function is called as root). Double check the mode, because the group setting | |
348 | doesn't always get set automatically. */ | |
349 | ||
350 | #ifndef O_CLOEXEC | |
351 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); | |
352 | #endif | |
353 | if (fchown(fd, exim_uid, exim_gid) < 0) | |
354 | { | |
355 | *error = US"chown"; | |
356 | return -1; | |
357 | } | |
358 | if (fchmod(fd, mode) < 0) | |
359 | { | |
360 | *error = US"chmod"; | |
361 | return -1; | |
362 | } | |
363 | return fd; | |
420a0d19 | 364 | } |
2ea97746 CE |
365 | if (errno != ENOENT) |
366 | break; | |
367 | ||
368 | (void)directory_make(spool_directory, | |
369 | spool_sname(US"msglog", message_subdir), | |
370 | MSGLOG_DIRECTORY_MODE, TRUE); | |
420a0d19 | 371 | } |
420a0d19 | 372 | |
2ea97746 CE |
373 | *error = US"create"; |
374 | return -1; | |
420a0d19 CE |
375 | } |
376 | ||
377 | ||
378 | ||
379 | ||
380 | /************************************************* | |
381 | * Write to msglog if required * | |
382 | *************************************************/ | |
383 | ||
384 | /* Write to the message log, if configured. This function may also be called | |
385 | from transports. | |
386 | ||
387 | Arguments: | |
388 | format a string format | |
389 | ||
390 | Returns: nothing | |
391 | */ | |
392 | ||
393 | void | |
394 | deliver_msglog(const char *format, ...) | |
395 | { | |
396 | va_list ap; | |
397 | if (!message_logs) return; | |
398 | va_start(ap, format); | |
399 | vfprintf(message_log, format, ap); | |
400 | fflush(message_log); | |
401 | va_end(ap); | |
402 | } | |
403 | ||
404 | ||
405 | ||
406 | ||
407 | /************************************************* | |
408 | * Replicate status for batch * | |
409 | *************************************************/ | |
410 | ||
411 | /* When a transport handles a batch of addresses, it may treat them | |
412 | individually, or it may just put the status in the first one, and return FALSE, | |
413 | requesting that the status be copied to all the others externally. This is the | |
414 | replication function. As well as the status, it copies the transport pointer, | |
415 | which may have changed if appendfile passed the addresses on to a different | |
416 | transport. | |
417 | ||
418 | Argument: pointer to the first address in a chain | |
419 | Returns: nothing | |
420 | */ | |
421 | ||
422 | static void | |
423 | replicate_status(address_item *addr) | |
424 | { | |
425 | address_item *addr2; | |
2ea97746 | 426 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
420a0d19 | 427 | { |
2ea97746 | 428 | addr2->transport = addr->transport; |
420a0d19 | 429 | addr2->transport_return = addr->transport_return; |
2ea97746 CE |
430 | addr2->basic_errno = addr->basic_errno; |
431 | addr2->more_errno = addr->more_errno; | |
432 | addr2->delivery_usec = addr->delivery_usec; | |
433 | addr2->special_action = addr->special_action; | |
434 | addr2->message = addr->message; | |
435 | addr2->user_message = addr->user_message; | |
420a0d19 CE |
436 | } |
437 | } | |
438 | ||
439 | ||
440 | ||
441 | /************************************************* | |
442 | * Compare lists of hosts * | |
443 | *************************************************/ | |
444 | ||
445 | /* This function is given two pointers to chains of host items, and it yields | |
446 | TRUE if the lists refer to the same hosts in the same order, except that | |
447 | ||
448 | (1) Multiple hosts with the same non-negative MX values are permitted to appear | |
449 | in different orders. Round-robinning nameservers can cause this to happen. | |
450 | ||
451 | (2) Multiple hosts with the same negative MX values less than MX_NONE are also | |
452 | permitted to appear in different orders. This is caused by randomizing | |
453 | hosts lists. | |
454 | ||
455 | This enables Exim to use a single SMTP transaction for sending to two entirely | |
456 | different domains that happen to end up pointing at the same hosts. | |
457 | ||
458 | Arguments: | |
459 | one points to the first host list | |
460 | two points to the second host list | |
461 | ||
462 | Returns: TRUE if the lists refer to the same host set | |
463 | */ | |
464 | ||
465 | static BOOL | |
466 | same_hosts(host_item *one, host_item *two) | |
467 | { | |
2ea97746 | 468 | while (one && two) |
420a0d19 CE |
469 | { |
470 | if (Ustrcmp(one->name, two->name) != 0) | |
471 | { | |
472 | int mx = one->mx; | |
473 | host_item *end_one = one; | |
474 | host_item *end_two = two; | |
475 | ||
476 | /* Batch up only if there was no MX and the list was not randomized */ | |
477 | ||
478 | if (mx == MX_NONE) return FALSE; | |
479 | ||
480 | /* Find the ends of the shortest sequence of identical MX values */ | |
481 | ||
2ea97746 CE |
482 | while ( end_one->next && end_one->next->mx == mx |
483 | && end_two->next && end_two->next->mx == mx) | |
420a0d19 CE |
484 | { |
485 | end_one = end_one->next; | |
486 | end_two = end_two->next; | |
487 | } | |
488 | ||
489 | /* If there aren't any duplicates, there's no match. */ | |
490 | ||
491 | if (end_one == one) return FALSE; | |
492 | ||
493 | /* For each host in the 'one' sequence, check that it appears in the 'two' | |
494 | sequence, returning FALSE if not. */ | |
495 | ||
496 | for (;;) | |
497 | { | |
498 | host_item *hi; | |
499 | for (hi = two; hi != end_two->next; hi = hi->next) | |
500 | if (Ustrcmp(one->name, hi->name) == 0) break; | |
501 | if (hi == end_two->next) return FALSE; | |
502 | if (one == end_one) break; | |
503 | one = one->next; | |
504 | } | |
505 | ||
506 | /* All the hosts in the 'one' sequence were found in the 'two' sequence. | |
507 | Ensure both are pointing at the last host, and carry on as for equality. */ | |
508 | ||
509 | two = end_two; | |
510 | } | |
511 | ||
2ea97746 CE |
512 | /* if the names matched but ports do not, mismatch */ |
513 | else if (one->port != two->port) | |
514 | return FALSE; | |
515 | ||
420a0d19 CE |
516 | /* Hosts matched */ |
517 | ||
518 | one = one->next; | |
519 | two = two->next; | |
520 | } | |
521 | ||
522 | /* True if both are NULL */ | |
523 | ||
524 | return (one == two); | |
525 | } | |
526 | ||
527 | ||
528 | ||
529 | /************************************************* | |
530 | * Compare header lines * | |
531 | *************************************************/ | |
532 | ||
533 | /* This function is given two pointers to chains of header items, and it yields | |
534 | TRUE if they are the same header texts in the same order. | |
535 | ||
536 | Arguments: | |
537 | one points to the first header list | |
538 | two points to the second header list | |
539 | ||
540 | Returns: TRUE if the lists refer to the same header set | |
541 | */ | |
542 | ||
543 | static BOOL | |
544 | same_headers(header_line *one, header_line *two) | |
545 | { | |
2ea97746 | 546 | for (;; one = one->next, two = two->next) |
420a0d19 CE |
547 | { |
548 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
2ea97746 | 549 | if (!one || !two) return FALSE; |
420a0d19 | 550 | if (Ustrcmp(one->text, two->text) != 0) return FALSE; |
420a0d19 CE |
551 | } |
552 | } | |
553 | ||
554 | ||
555 | ||
556 | /************************************************* | |
557 | * Compare string settings * | |
558 | *************************************************/ | |
559 | ||
560 | /* This function is given two pointers to strings, and it returns | |
561 | TRUE if they are the same pointer, or if the two strings are the same. | |
562 | ||
563 | Arguments: | |
564 | one points to the first string | |
565 | two points to the second string | |
566 | ||
567 | Returns: TRUE or FALSE | |
568 | */ | |
569 | ||
570 | static BOOL | |
571 | same_strings(uschar *one, uschar *two) | |
572 | { | |
573 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
2ea97746 | 574 | if (!one || !two) return FALSE; |
420a0d19 CE |
575 | return (Ustrcmp(one, two) == 0); |
576 | } | |
577 | ||
578 | ||
579 | ||
580 | /************************************************* | |
581 | * Compare uid/gid for addresses * | |
582 | *************************************************/ | |
583 | ||
584 | /* This function is given a transport and two addresses. It yields TRUE if the | |
585 | uid/gid/initgroups settings for the two addresses are going to be the same when | |
586 | they are delivered. | |
587 | ||
588 | Arguments: | |
589 | tp the transort | |
590 | addr1 the first address | |
591 | addr2 the second address | |
592 | ||
593 | Returns: TRUE or FALSE | |
594 | */ | |
595 | ||
596 | static BOOL | |
597 | same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2) | |
598 | { | |
2ea97746 CE |
599 | if ( !tp->uid_set && !tp->expand_uid |
600 | && !tp->deliver_as_creator | |
601 | && ( testflag(addr1, af_uid_set) != testflag(addr2, af_gid_set) | |
602 | || ( testflag(addr1, af_uid_set) | |
603 | && ( addr1->uid != addr2->uid | |
604 | || testflag(addr1, af_initgroups) != testflag(addr2, af_initgroups) | |
605 | ) ) ) ) | |
606 | return FALSE; | |
420a0d19 | 607 | |
2ea97746 CE |
608 | if ( !tp->gid_set && !tp->expand_gid |
609 | && ( testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set) | |
610 | || ( testflag(addr1, af_gid_set) | |
611 | && addr1->gid != addr2->gid | |
612 | ) ) ) | |
613 | return FALSE; | |
420a0d19 CE |
614 | |
615 | return TRUE; | |
616 | } | |
617 | ||
618 | ||
619 | ||
620 | ||
621 | /************************************************* | |
622 | * Record that an address is complete * | |
623 | *************************************************/ | |
624 | ||
625 | /* This function records that an address is complete. This is straightforward | |
626 | for most addresses, where the unique address is just the full address with the | |
627 | domain lower cased. For homonyms (addresses that are the same as one of their | |
628 | ancestors) their are complications. Their unique addresses have \x\ prepended | |
629 | (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and | |
630 | cousins. | |
631 | ||
632 | Exim used to record the unique addresses of homonyms as "complete". This, | |
633 | however, fails when the pattern of redirection varies over time (e.g. if taking | |
634 | unseen copies at only some times of day) because the prepended numbers may vary | |
635 | from one delivery run to the next. This problem is solved by never recording | |
636 | prepended unique addresses as complete. Instead, when a homonymic address has | |
637 | actually been delivered via a transport, we record its basic unique address | |
638 | followed by the name of the transport. This is checked in subsequent delivery | |
639 | runs whenever an address is routed to a transport. | |
640 | ||
641 | If the completed address is a top-level one (has no parent, which means it | |
642 | cannot be homonymic) we also add the original address to the non-recipients | |
643 | tree, so that it gets recorded in the spool file and therefore appears as | |
644 | "done" in any spool listings. The original address may differ from the unique | |
645 | address in the case of the domain. | |
646 | ||
647 | Finally, this function scans the list of duplicates, marks as done any that | |
648 | match this address, and calls child_done() for their ancestors. | |
649 | ||
650 | Arguments: | |
651 | addr address item that has been completed | |
652 | now current time as a string | |
653 | ||
654 | Returns: nothing | |
655 | */ | |
656 | ||
657 | static void | |
658 | address_done(address_item *addr, uschar *now) | |
659 | { | |
660 | address_item *dup; | |
661 | ||
662 | update_spool = TRUE; /* Ensure spool gets updated */ | |
663 | ||
664 | /* Top-level address */ | |
665 | ||
2ea97746 | 666 | if (!addr->parent) |
420a0d19 CE |
667 | { |
668 | tree_add_nonrecipient(addr->unique); | |
669 | tree_add_nonrecipient(addr->address); | |
670 | } | |
671 | ||
672 | /* Homonymous child address */ | |
673 | ||
674 | else if (testflag(addr, af_homonym)) | |
675 | { | |
2ea97746 | 676 | if (addr->transport) |
420a0d19 CE |
677 | tree_add_nonrecipient( |
678 | string_sprintf("%s/%s", addr->unique + 3, addr->transport->name)); | |
420a0d19 CE |
679 | } |
680 | ||
681 | /* Non-homonymous child address */ | |
682 | ||
683 | else tree_add_nonrecipient(addr->unique); | |
684 | ||
685 | /* Check the list of duplicate addresses and ensure they are now marked | |
686 | done as well. */ | |
687 | ||
2ea97746 | 688 | for (dup = addr_duplicate; dup; dup = dup->next) |
420a0d19 CE |
689 | if (Ustrcmp(addr->unique, dup->unique) == 0) |
690 | { | |
691 | tree_add_nonrecipient(dup->unique); | |
692 | child_done(dup, now); | |
693 | } | |
420a0d19 CE |
694 | } |
695 | ||
696 | ||
697 | ||
698 | ||
699 | /************************************************* | |
700 | * Decrease counts in parents and mark done * | |
701 | *************************************************/ | |
702 | ||
703 | /* This function is called when an address is complete. If there is a parent | |
704 | address, its count of children is decremented. If there are still other | |
705 | children outstanding, the function exits. Otherwise, if the count has become | |
706 | zero, address_done() is called to mark the parent and its duplicates complete. | |
707 | Then loop for any earlier ancestors. | |
708 | ||
709 | Arguments: | |
710 | addr points to the completed address item | |
711 | now the current time as a string, for writing to the message log | |
712 | ||
713 | Returns: nothing | |
714 | */ | |
715 | ||
716 | static void | |
717 | child_done(address_item *addr, uschar *now) | |
718 | { | |
719 | address_item *aa; | |
2ea97746 | 720 | while (addr->parent) |
420a0d19 CE |
721 | { |
722 | addr = addr->parent; | |
2ea97746 | 723 | if (--addr->child_count > 0) return; /* Incomplete parent */ |
420a0d19 CE |
724 | address_done(addr, now); |
725 | ||
726 | /* Log the completion of all descendents only when there is no ancestor with | |
727 | the same original address. */ | |
728 | ||
2ea97746 | 729 | for (aa = addr->parent; aa; aa = aa->parent) |
420a0d19 | 730 | if (Ustrcmp(aa->address, addr->address) == 0) break; |
2ea97746 | 731 | if (aa) continue; |
420a0d19 CE |
732 | |
733 | deliver_msglog("%s %s: children all complete\n", now, addr->address); | |
734 | DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address); | |
735 | } | |
736 | } | |
737 | ||
738 | ||
739 | ||
2ea97746 CE |
740 | /************************************************* |
741 | * Delivery logging support functions * | |
742 | *************************************************/ | |
743 | ||
744 | /* The LOGGING() checks in d_log_interface() are complicated for backwards | |
745 | compatibility. When outgoing interface logging was originally added, it was | |
746 | conditional on just incoming_interface (which is off by default). The | |
747 | outgoing_interface option is on by default to preserve this behaviour, but | |
748 | you can enable incoming_interface and disable outgoing_interface to get I= | |
749 | fields on incoming lines only. | |
420a0d19 | 750 | |
2ea97746 CE |
751 | Arguments: |
752 | g The log line | |
753 | addr The address to be logged | |
754 | ||
755 | Returns: New value for s | |
756 | */ | |
757 | ||
758 | static gstring * | |
759 | d_log_interface(gstring * g) | |
760 | { | |
761 | if (LOGGING(incoming_interface) && LOGGING(outgoing_interface) | |
762 | && sending_ip_address) | |
763 | { | |
764 | g = string_fmt_append(g, " I=[%s]", sending_ip_address); | |
765 | if (LOGGING(outgoing_port)) | |
766 | g = string_fmt_append(g, "%d", sending_port); | |
767 | } | |
768 | return g; | |
769 | } | |
770 | ||
771 | ||
772 | ||
773 | static gstring * | |
774 | d_hostlog(gstring * g, address_item * addr) | |
420a0d19 | 775 | { |
2ea97746 CE |
776 | host_item * h = addr->host_used; |
777 | ||
778 | g = string_append(g, 2, US" H=", h->name); | |
779 | ||
780 | if (LOGGING(dnssec) && h->dnssec == DS_YES) | |
781 | g = string_catn(g, US" DS", 3); | |
782 | ||
783 | g = string_append(g, 3, US" [", h->address, US"]"); | |
784 | ||
785 | if (LOGGING(outgoing_port)) | |
786 | g = string_fmt_append(g, ":%d", h->port); | |
787 | ||
788 | #ifdef SUPPORT_SOCKS | |
789 | if (LOGGING(proxy) && proxy_local_address) | |
790 | { | |
791 | g = string_append(g, 3, US" PRX=[", proxy_local_address, US"]"); | |
792 | if (LOGGING(outgoing_port)) | |
793 | g = string_fmt_append(g, ":%d", proxy_local_port); | |
794 | } | |
795 | #endif | |
796 | ||
797 | g = d_log_interface(g); | |
798 | ||
799 | if (testflag(addr, af_tcp_fastopen)) | |
800 | g = string_catn(g, US" TFO*", testflag(addr, af_tcp_fastopen_data) ? 5 : 4); | |
801 | ||
802 | return g; | |
420a0d19 CE |
803 | } |
804 | ||
2ea97746 CE |
805 | |
806 | ||
807 | ||
808 | ||
420a0d19 | 809 | #ifdef SUPPORT_TLS |
2ea97746 CE |
810 | static gstring * |
811 | d_tlslog(gstring * s, address_item * addr) | |
420a0d19 | 812 | { |
2ea97746 CE |
813 | if (LOGGING(tls_cipher) && addr->cipher) |
814 | s = string_append(s, 2, US" X=", addr->cipher); | |
815 | if (LOGGING(tls_certificate_verified) && addr->cipher) | |
816 | s = string_append(s, 2, US" CV=", | |
817 | testflag(addr, af_cert_verified) | |
818 | ? | |
819 | #ifdef SUPPORT_DANE | |
820 | testflag(addr, af_dane_verified) | |
821 | ? "dane" | |
822 | : | |
823 | #endif | |
824 | "yes" | |
825 | : "no"); | |
826 | if (LOGGING(tls_peerdn) && addr->peerdn) | |
827 | s = string_append(s, 3, US" DN=\"", string_printing(addr->peerdn), US"\""); | |
828 | return s; | |
420a0d19 CE |
829 | } |
830 | #endif | |
831 | ||
2ea97746 CE |
832 | |
833 | ||
834 | ||
835 | #ifndef DISABLE_EVENT | |
836 | uschar * | |
837 | event_raise(uschar * action, const uschar * event, uschar * ev_data) | |
838 | { | |
839 | uschar * s; | |
840 | if (action) | |
841 | { | |
842 | DEBUG(D_deliver) | |
843 | debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n", | |
844 | event, | |
845 | action, deliver_host_address); | |
846 | ||
847 | event_name = event; | |
848 | event_data = ev_data; | |
849 | ||
850 | if (!(s = expand_string(action)) && *expand_string_message) | |
851 | log_write(0, LOG_MAIN|LOG_PANIC, | |
852 | "failed to expand event_action %s in %s: %s\n", | |
853 | event, transport_name ? transport_name : US"main", expand_string_message); | |
854 | ||
855 | event_name = event_data = NULL; | |
856 | ||
857 | /* If the expansion returns anything but an empty string, flag for | |
858 | the caller to modify his normal processing | |
859 | */ | |
860 | if (s && *s) | |
861 | { | |
862 | DEBUG(D_deliver) | |
863 | debug_printf("Event(%s): event_action returned \"%s\"\n", event, s); | |
864 | return s; | |
865 | } | |
866 | } | |
867 | return NULL; | |
868 | } | |
869 | ||
870 | void | |
871 | msg_event_raise(const uschar * event, const address_item * addr) | |
872 | { | |
873 | const uschar * save_domain = deliver_domain; | |
874 | uschar * save_local = deliver_localpart; | |
875 | const uschar * save_host = deliver_host; | |
876 | const uschar * save_address = deliver_host_address; | |
877 | const int save_port = deliver_host_port; | |
878 | ||
879 | router_name = addr->router ? addr->router->name : NULL; | |
880 | deliver_domain = addr->domain; | |
881 | deliver_localpart = addr->local_part; | |
882 | deliver_host = addr->host_used ? addr->host_used->name : NULL; | |
883 | ||
884 | if (!addr->transport) | |
885 | { | |
886 | if (Ustrcmp(event, "msg:fail:delivery") == 0) | |
887 | { | |
888 | /* An address failed with no transport involved. This happens when | |
889 | a filter was used which triggered a fail command (in such a case | |
890 | a transport isn't needed). Convert it to an internal fail event. */ | |
891 | ||
892 | (void) event_raise(event_action, US"msg:fail:internal", addr->message); | |
893 | } | |
894 | } | |
895 | else | |
896 | { | |
897 | transport_name = addr->transport->name; | |
898 | ||
899 | (void) event_raise(addr->transport->event_action, event, | |
900 | addr->host_used | |
901 | || Ustrcmp(addr->transport->driver_name, "smtp") == 0 | |
902 | || Ustrcmp(addr->transport->driver_name, "lmtp") == 0 | |
903 | || Ustrcmp(addr->transport->driver_name, "autoreply") == 0 | |
904 | ? addr->message : NULL); | |
905 | } | |
906 | ||
907 | deliver_host_port = save_port; | |
908 | deliver_host_address = save_address; | |
909 | deliver_host = save_host; | |
910 | deliver_localpart = save_local; | |
911 | deliver_domain = save_domain; | |
912 | router_name = transport_name = NULL; | |
913 | } | |
914 | #endif /*DISABLE_EVENT*/ | |
915 | ||
916 | ||
917 | ||
918 | /******************************************************************************/ | |
919 | ||
920 | ||
921 | /************************************************* | |
922 | * Generate local prt for logging * | |
923 | *************************************************/ | |
924 | ||
925 | /* This function is a subroutine for use in string_log_address() below. | |
926 | ||
927 | Arguments: | |
928 | addr the address being logged | |
929 | yield the current dynamic buffer pointer | |
930 | ||
931 | Returns: the new value of the buffer pointer | |
932 | */ | |
933 | ||
934 | static gstring * | |
935 | string_get_localpart(address_item * addr, gstring * yield) | |
936 | { | |
937 | uschar * s; | |
938 | ||
939 | s = addr->prefix; | |
940 | if (testflag(addr, af_include_affixes) && s) | |
941 | { | |
942 | #ifdef SUPPORT_I18N | |
943 | if (testflag(addr, af_utf8_downcvt)) | |
944 | s = string_localpart_utf8_to_alabel(s, NULL); | |
945 | #endif | |
946 | yield = string_cat(yield, s); | |
947 | } | |
948 | ||
949 | s = addr->local_part; | |
950 | #ifdef SUPPORT_I18N | |
951 | if (testflag(addr, af_utf8_downcvt)) | |
952 | s = string_localpart_utf8_to_alabel(s, NULL); | |
953 | #endif | |
954 | yield = string_cat(yield, s); | |
955 | ||
956 | s = addr->suffix; | |
957 | if (testflag(addr, af_include_affixes) && s) | |
958 | { | |
959 | #ifdef SUPPORT_I18N | |
960 | if (testflag(addr, af_utf8_downcvt)) | |
961 | s = string_localpart_utf8_to_alabel(s, NULL); | |
962 | #endif | |
963 | yield = string_cat(yield, s); | |
964 | } | |
965 | ||
966 | return yield; | |
967 | } | |
968 | ||
969 | ||
970 | /************************************************* | |
971 | * Generate log address list * | |
972 | *************************************************/ | |
973 | ||
974 | /* This function generates a list consisting of an address and its parents, for | |
975 | use in logging lines. For saved onetime aliased addresses, the onetime parent | |
976 | field is used. If the address was delivered by a transport with rcpt_include_ | |
977 | affixes set, the af_include_affixes bit will be set in the address. In that | |
978 | case, we include the affixes here too. | |
979 | ||
980 | Arguments: | |
981 | g points to growing-string struct | |
982 | addr bottom (ultimate) address | |
983 | all_parents if TRUE, include all parents | |
984 | success TRUE for successful delivery | |
985 | ||
986 | Returns: a growable string in dynamic store | |
987 | */ | |
988 | ||
989 | static gstring * | |
990 | string_log_address(gstring * g, | |
991 | address_item *addr, BOOL all_parents, BOOL success) | |
992 | { | |
993 | BOOL add_topaddr = TRUE; | |
994 | address_item *topaddr; | |
995 | ||
996 | /* Find the ultimate parent */ | |
997 | ||
998 | for (topaddr = addr; topaddr->parent; topaddr = topaddr->parent) ; | |
999 | ||
1000 | /* We start with just the local part for pipe, file, and reply deliveries, and | |
1001 | for successful local deliveries from routers that have the log_as_local flag | |
1002 | set. File deliveries from filters can be specified as non-absolute paths in | |
1003 | cases where the transport is going to complete the path. If there is an error | |
1004 | before this happens (expansion failure) the local part will not be updated, and | |
1005 | so won't necessarily look like a path. Add extra text for this case. */ | |
1006 | ||
1007 | if ( testflag(addr, af_pfr) | |
1008 | || ( success | |
1009 | && addr->router && addr->router->log_as_local | |
1010 | && addr->transport && addr->transport->info->local | |
1011 | ) ) | |
1012 | { | |
1013 | if (testflag(addr, af_file) && addr->local_part[0] != '/') | |
1014 | g = string_catn(g, CUS"save ", 5); | |
1015 | g = string_get_localpart(addr, g); | |
1016 | } | |
1017 | ||
1018 | /* Other deliveries start with the full address. It we have split it into local | |
1019 | part and domain, use those fields. Some early failures can happen before the | |
1020 | splitting is done; in those cases use the original field. */ | |
1021 | ||
1022 | else | |
1023 | { | |
1024 | uschar * cmp = g->s + g->ptr; | |
1025 | ||
1026 | if (addr->local_part) | |
1027 | { | |
1028 | const uschar * s; | |
1029 | g = string_get_localpart(addr, g); | |
1030 | g = string_catn(g, US"@", 1); | |
1031 | s = addr->domain; | |
1032 | #ifdef SUPPORT_I18N | |
1033 | if (testflag(addr, af_utf8_downcvt)) | |
1034 | s = string_localpart_utf8_to_alabel(s, NULL); | |
1035 | #endif | |
1036 | g = string_cat(g, s); | |
1037 | } | |
1038 | else | |
1039 | g = string_cat(g, addr->address); | |
1040 | ||
1041 | /* If the address we are going to print is the same as the top address, | |
1042 | and all parents are not being included, don't add on the top address. First | |
1043 | of all, do a caseless comparison; if this succeeds, do a caseful comparison | |
1044 | on the local parts. */ | |
1045 | ||
1046 | string_from_gstring(g); /* ensure nul-terminated */ | |
1047 | if ( strcmpic(cmp, topaddr->address) == 0 | |
1048 | && Ustrncmp(cmp, topaddr->address, Ustrchr(cmp, '@') - cmp) == 0 | |
1049 | && !addr->onetime_parent | |
1050 | && (!all_parents || !addr->parent || addr->parent == topaddr) | |
1051 | ) | |
1052 | add_topaddr = FALSE; | |
1053 | } | |
1054 | ||
1055 | /* If all parents are requested, or this is a local pipe/file/reply, and | |
1056 | there is at least one intermediate parent, show it in brackets, and continue | |
1057 | with all of them if all are wanted. */ | |
1058 | ||
1059 | if ( (all_parents || testflag(addr, af_pfr)) | |
1060 | && addr->parent | |
1061 | && addr->parent != topaddr) | |
1062 | { | |
1063 | uschar *s = US" ("; | |
1064 | address_item *addr2; | |
1065 | for (addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent) | |
1066 | { | |
1067 | g = string_catn(g, s, 2); | |
1068 | g = string_cat (g, addr2->address); | |
1069 | if (!all_parents) break; | |
1070 | s = US", "; | |
1071 | } | |
1072 | g = string_catn(g, US")", 1); | |
1073 | } | |
1074 | ||
1075 | /* Add the top address if it is required */ | |
1076 | ||
1077 | if (add_topaddr) | |
1078 | g = string_append(g, 3, | |
1079 | US" <", | |
1080 | addr->onetime_parent ? addr->onetime_parent : topaddr->address, | |
1081 | US">"); | |
1082 | ||
1083 | return g; | |
1084 | } | |
1085 | ||
1086 | ||
1087 | ||
1088 | void | |
1089 | timesince(struct timeval * diff, struct timeval * then) | |
1090 | { | |
1091 | gettimeofday(diff, NULL); | |
1092 | diff->tv_sec -= then->tv_sec; | |
1093 | if ((diff->tv_usec -= then->tv_usec) < 0) | |
1094 | { | |
1095 | diff->tv_sec--; | |
1096 | diff->tv_usec += 1000*1000; | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | ||
1101 | ||
1102 | uschar * | |
1103 | string_timediff(struct timeval * diff) | |
1104 | { | |
1105 | static uschar buf[sizeof("0.000s")]; | |
1106 | ||
1107 | if (diff->tv_sec >= 5 || !LOGGING(millisec)) | |
1108 | return readconf_printtime((int)diff->tv_sec); | |
1109 | ||
1110 | sprintf(CS buf, "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000); | |
1111 | return buf; | |
1112 | } | |
1113 | ||
1114 | ||
1115 | uschar * | |
1116 | string_timesince(struct timeval * then) | |
1117 | { | |
1118 | struct timeval diff; | |
1119 | ||
1120 | timesince(&diff, then); | |
1121 | return string_timediff(&diff); | |
1122 | } | |
1123 | ||
1124 | /******************************************************************************/ | |
1125 | ||
1126 | ||
1127 | ||
420a0d19 CE |
1128 | /* If msg is NULL this is a delivery log and logchar is used. Otherwise |
1129 | this is a nonstandard call; no two-character delivery flag is written | |
1130 | but sender-host and sender are prefixed and "msg" is inserted in the log line. | |
1131 | ||
1132 | Arguments: | |
1133 | flags passed to log_write() | |
1134 | */ | |
1135 | void | |
1136 | delivery_log(int flags, address_item * addr, int logchar, uschar * msg) | |
1137 | { | |
2ea97746 CE |
1138 | gstring * g; /* Used for a temporary, expanding buffer, for building log lines */ |
1139 | void * reset_point; /* released afterwards. */ | |
420a0d19 CE |
1140 | |
1141 | /* Log the delivery on the main log. We use an extensible string to build up | |
1142 | the log line, and reset the store afterwards. Remote deliveries should always | |
1143 | have a pointer to the host item that succeeded; local deliveries can have a | |
1144 | pointer to a single host item in their host list, for use by the transport. */ | |
1145 | ||
2ea97746 CE |
1146 | #ifndef DISABLE_EVENT |
1147 | /* presume no successful remote delivery */ | |
420a0d19 CE |
1148 | lookup_dnssec_authenticated = NULL; |
1149 | #endif | |
1150 | ||
2ea97746 | 1151 | g = reset_point = string_get(256); |
420a0d19 | 1152 | |
420a0d19 | 1153 | if (msg) |
2ea97746 | 1154 | g = string_append(g, 2, host_and_ident(TRUE), US" "); |
420a0d19 CE |
1155 | else |
1156 | { | |
2ea97746 CE |
1157 | g->s[0] = logchar; g->ptr = 1; |
1158 | g = string_catn(g, US"> ", 2); | |
420a0d19 | 1159 | } |
2ea97746 CE |
1160 | g = string_log_address(g, addr, LOGGING(all_parents), TRUE); |
1161 | ||
1162 | if (LOGGING(sender_on_delivery) || msg) | |
1163 | g = string_append(g, 3, US" F=<", | |
1164 | #ifdef SUPPORT_I18N | |
1165 | testflag(addr, af_utf8_downcvt) | |
1166 | ? string_address_utf8_to_alabel(sender_address, NULL) | |
1167 | : | |
1168 | #endif | |
1169 | sender_address, | |
1170 | US">"); | |
420a0d19 | 1171 | |
2ea97746 CE |
1172 | if (*queue_name) |
1173 | g = string_append(g, 2, US" Q=", queue_name); | |
420a0d19 CE |
1174 | |
1175 | #ifdef EXPERIMENTAL_SRS | |
2ea97746 CE |
1176 | if(addr->prop.srs_sender) |
1177 | g = string_append(g, 3, US" SRS=<", addr->prop.srs_sender, US">"); | |
420a0d19 CE |
1178 | #endif |
1179 | ||
1180 | /* You might think that the return path must always be set for a successful | |
1181 | delivery; indeed, I did for some time, until this statement crashed. The case | |
1182 | when it is not set is for a delivery to /dev/null which is optimised by not | |
1183 | being run at all. */ | |
1184 | ||
2ea97746 CE |
1185 | if (used_return_path && LOGGING(return_path_on_delivery)) |
1186 | g = string_append(g, 3, US" P=<", used_return_path, US">"); | |
420a0d19 CE |
1187 | |
1188 | if (msg) | |
2ea97746 | 1189 | g = string_append(g, 2, US" ", msg); |
420a0d19 CE |
1190 | |
1191 | /* For a delivery from a system filter, there may not be a router */ | |
2ea97746 CE |
1192 | if (addr->router) |
1193 | g = string_append(g, 2, US" R=", addr->router->name); | |
420a0d19 | 1194 | |
2ea97746 | 1195 | g = string_append(g, 2, US" T=", addr->transport->name); |
420a0d19 | 1196 | |
2ea97746 CE |
1197 | if (LOGGING(delivery_size)) |
1198 | g = string_fmt_append(g, " S=%d", transport_count); | |
420a0d19 CE |
1199 | |
1200 | /* Local delivery */ | |
1201 | ||
1202 | if (addr->transport->info->local) | |
1203 | { | |
2ea97746 CE |
1204 | if (addr->host_list) |
1205 | g = string_append(g, 2, US" H=", addr->host_list->name); | |
1206 | g = d_log_interface(g); | |
1207 | if (addr->shadow_message) | |
1208 | g = string_cat(g, addr->shadow_message); | |
420a0d19 CE |
1209 | } |
1210 | ||
1211 | /* Remote delivery */ | |
1212 | ||
1213 | else | |
1214 | { | |
1215 | if (addr->host_used) | |
1216 | { | |
2ea97746 | 1217 | g = d_hostlog(g, addr); |
420a0d19 | 1218 | if (continue_sequence > 1) |
2ea97746 | 1219 | g = string_catn(g, US"*", 1); |
420a0d19 | 1220 | |
2ea97746 CE |
1221 | #ifndef DISABLE_EVENT |
1222 | deliver_host_address = addr->host_used->address; | |
1223 | deliver_host_port = addr->host_used->port; | |
1224 | deliver_host = addr->host_used->name; | |
420a0d19 CE |
1225 | |
1226 | /* DNS lookup status */ | |
1227 | lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes" | |
1228 | : addr->host_used->dnssec==DS_NO ? US"no" | |
1229 | : NULL; | |
2ea97746 | 1230 | #endif |
420a0d19 CE |
1231 | } |
1232 | ||
2ea97746 CE |
1233 | #ifdef SUPPORT_TLS |
1234 | g = d_tlslog(g, addr); | |
1235 | #endif | |
420a0d19 CE |
1236 | |
1237 | if (addr->authenticator) | |
1238 | { | |
2ea97746 | 1239 | g = string_append(g, 2, US" A=", addr->authenticator); |
420a0d19 CE |
1240 | if (addr->auth_id) |
1241 | { | |
2ea97746 CE |
1242 | g = string_append(g, 2, US":", addr->auth_id); |
1243 | if (LOGGING(smtp_mailauth) && addr->auth_sndr) | |
1244 | g = string_append(g, 2, US":", addr->auth_sndr); | |
420a0d19 CE |
1245 | } |
1246 | } | |
1247 | ||
2ea97746 CE |
1248 | if (LOGGING(pipelining)) |
1249 | { | |
1250 | if (testflag(addr, af_pipelining)) | |
1251 | g = string_catn(g, US" L", 2); | |
1252 | #ifdef EXPERIMENTAL_PIPE_CONNECT | |
1253 | if (testflag(addr, af_early_pipe)) | |
1254 | g = string_catn(g, US"*", 1); | |
1255 | #endif | |
1256 | } | |
1257 | ||
1258 | #ifndef DISABLE_PRDR | |
1259 | if (testflag(addr, af_prdr_used)) | |
1260 | g = string_catn(g, US" PRDR", 5); | |
1261 | #endif | |
1262 | ||
1263 | if (testflag(addr, af_chunking_used)) | |
1264 | g = string_catn(g, US" K", 2); | |
420a0d19 CE |
1265 | } |
1266 | ||
1267 | /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */ | |
1268 | ||
2ea97746 CE |
1269 | if ( LOGGING(smtp_confirmation) |
1270 | && addr->message | |
1271 | && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0) | |
1272 | ) | |
420a0d19 | 1273 | { |
2ea97746 CE |
1274 | unsigned i; |
1275 | unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024; | |
420a0d19 CE |
1276 | uschar *p = big_buffer; |
1277 | uschar *ss = addr->message; | |
1278 | *p++ = '\"'; | |
2ea97746 | 1279 | for (i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */ |
420a0d19 CE |
1280 | { |
1281 | if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */ | |
1282 | *p++ = ss[i]; | |
1283 | } | |
1284 | *p++ = '\"'; | |
1285 | *p = 0; | |
2ea97746 | 1286 | g = string_append(g, 2, US" C=", big_buffer); |
420a0d19 CE |
1287 | } |
1288 | ||
1289 | /* Time on queue and actual time taken to deliver */ | |
1290 | ||
2ea97746 CE |
1291 | if (LOGGING(queue_time)) |
1292 | g = string_append(g, 2, US" QT=", | |
1293 | string_timesince(&received_time)); | |
420a0d19 | 1294 | |
2ea97746 CE |
1295 | if (LOGGING(deliver_time)) |
1296 | { | |
1297 | struct timeval diff = {.tv_sec = addr->more_errno, .tv_usec = addr->delivery_usec}; | |
1298 | g = string_append(g, 2, US" DT=", string_timediff(&diff)); | |
1299 | } | |
420a0d19 CE |
1300 | |
1301 | /* string_cat() always leaves room for the terminator. Release the | |
1302 | store we used to build the line after writing it. */ | |
1303 | ||
2ea97746 CE |
1304 | log_write(0, flags, "%s", string_from_gstring(g)); |
1305 | ||
1306 | #ifndef DISABLE_EVENT | |
1307 | if (!msg) msg_event_raise(US"msg:delivery", addr); | |
1308 | #endif | |
1309 | ||
1310 | store_reset(reset_point); | |
1311 | return; | |
1312 | } | |
1313 | ||
1314 | ||
1315 | ||
1316 | static void | |
1317 | deferral_log(address_item * addr, uschar * now, | |
1318 | int logflags, uschar * driver_name, uschar * driver_kind) | |
1319 | { | |
1320 | gstring * g; | |
1321 | void * reset_point; | |
1322 | ||
1323 | /* Build up the line that is used for both the message log and the main | |
1324 | log. */ | |
420a0d19 | 1325 | |
2ea97746 CE |
1326 | g = reset_point = string_get(256); |
1327 | ||
1328 | /* Create the address string for logging. Must not do this earlier, because | |
1329 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1330 | ||
1331 | g = string_log_address(g, addr, LOGGING(all_parents), FALSE); | |
1332 | ||
1333 | if (*queue_name) | |
1334 | g = string_append(g, 2, US" Q=", queue_name); | |
1335 | ||
1336 | /* Either driver_name contains something and driver_kind contains | |
1337 | " router" or " transport" (note the leading space), or driver_name is | |
1338 | a null string and driver_kind contains "routing" without the leading | |
1339 | space, if all routing has been deferred. When a domain has been held, | |
1340 | so nothing has been done at all, both variables contain null strings. */ | |
1341 | ||
1342 | if (driver_name) | |
420a0d19 | 1343 | { |
2ea97746 CE |
1344 | if (driver_kind[1] == 't' && addr->router) |
1345 | g = string_append(g, 2, US" R=", addr->router->name); | |
1346 | g = string_fmt_append(g, " %c=%s", toupper(driver_kind[1]), driver_name); | |
1347 | } | |
1348 | else if (driver_kind) | |
1349 | g = string_append(g, 2, US" ", driver_kind); | |
420a0d19 | 1350 | |
2ea97746 CE |
1351 | g = string_fmt_append(g, " defer (%d)", addr->basic_errno); |
1352 | ||
1353 | if (addr->basic_errno > 0) | |
1354 | g = string_append(g, 2, US": ", | |
1355 | US strerror(addr->basic_errno)); | |
1356 | ||
1357 | if (addr->host_used) | |
1358 | { | |
1359 | g = string_append(g, 5, | |
1360 | US" H=", addr->host_used->name, | |
1361 | US" [", addr->host_used->address, US"]"); | |
1362 | if (LOGGING(outgoing_port)) | |
1363 | { | |
1364 | int port = addr->host_used->port; | |
1365 | g = string_fmt_append(g, ":%d", port == PORT_NONE ? 25 : port); | |
1366 | } | |
420a0d19 | 1367 | } |
2ea97746 CE |
1368 | |
1369 | if (addr->message) | |
1370 | g = string_append(g, 2, US": ", addr->message); | |
1371 | ||
1372 | (void) string_from_gstring(g); | |
1373 | ||
1374 | /* Log the deferment in the message log, but don't clutter it | |
1375 | up with retry-time defers after the first delivery attempt. */ | |
1376 | ||
1377 | if (f.deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE) | |
1378 | deliver_msglog("%s %s\n", now, g->s); | |
1379 | ||
1380 | /* Write the main log and reset the store. | |
1381 | For errors of the type "retry time not reached" (also remotes skipped | |
1382 | on queue run), logging is controlled by L_retry_defer. Note that this kind | |
1383 | of error number is negative, and all the retry ones are less than any | |
1384 | others. */ | |
1385 | ||
1386 | ||
1387 | log_write(addr->basic_errno <= ERRNO_RETRY_BASE ? L_retry_defer : 0, logflags, | |
1388 | "== %s", g->s); | |
1389 | ||
1390 | store_reset(reset_point); | |
1391 | return; | |
1392 | } | |
1393 | ||
1394 | ||
1395 | ||
1396 | static void | |
1397 | failure_log(address_item * addr, uschar * driver_kind, uschar * now) | |
1398 | { | |
1399 | void * reset_point; | |
1400 | gstring * g = reset_point = string_get(256); | |
1401 | ||
1402 | #ifndef DISABLE_EVENT | |
1403 | /* Message failures for which we will send a DSN get their event raised | |
1404 | later so avoid doing it here. */ | |
1405 | ||
1406 | if ( !addr->prop.ignore_error | |
1407 | && !(addr->dsn_flags & (rf_dsnflags & ~rf_notify_failure)) | |
1408 | ) | |
1409 | msg_event_raise(US"msg:fail:delivery", addr); | |
1410 | #endif | |
1411 | ||
1412 | /* Build up the log line for the message and main logs */ | |
1413 | ||
1414 | /* Create the address string for logging. Must not do this earlier, because | |
1415 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1416 | ||
1417 | g = string_log_address(g, addr, LOGGING(all_parents), FALSE); | |
1418 | ||
1419 | if (LOGGING(sender_on_delivery)) | |
1420 | g = string_append(g, 3, US" F=<", sender_address, US">"); | |
1421 | ||
1422 | if (*queue_name) | |
1423 | g = string_append(g, 2, US" Q=", queue_name); | |
1424 | ||
1425 | /* Return path may not be set if no delivery actually happened */ | |
1426 | ||
1427 | if (used_return_path && LOGGING(return_path_on_delivery)) | |
1428 | g = string_append(g, 3, US" P=<", used_return_path, US">"); | |
1429 | ||
1430 | if (addr->router) | |
1431 | g = string_append(g, 2, US" R=", addr->router->name); | |
1432 | if (addr->transport) | |
1433 | g = string_append(g, 2, US" T=", addr->transport->name); | |
1434 | ||
1435 | if (addr->host_used) | |
1436 | g = d_hostlog(g, addr); | |
1437 | ||
1438 | #ifdef SUPPORT_TLS | |
1439 | g = d_tlslog(g, addr); | |
420a0d19 | 1440 | #endif |
2ea97746 CE |
1441 | |
1442 | if (addr->basic_errno > 0) | |
1443 | g = string_append(g, 2, US": ", US strerror(addr->basic_errno)); | |
1444 | ||
1445 | if (addr->message) | |
1446 | g = string_append(g, 2, US": ", addr->message); | |
1447 | ||
1448 | (void) string_from_gstring(g); | |
1449 | ||
1450 | /* Do the logging. For the message log, "routing failed" for those cases, | |
1451 | just to make it clearer. */ | |
1452 | ||
1453 | if (driver_kind) | |
1454 | deliver_msglog("%s %s failed for %s\n", now, driver_kind, g->s); | |
1455 | else | |
1456 | deliver_msglog("%s %s\n", now, g->s); | |
1457 | ||
1458 | log_write(0, LOG_MAIN, "** %s", g->s); | |
1459 | ||
420a0d19 CE |
1460 | store_reset(reset_point); |
1461 | return; | |
1462 | } | |
1463 | ||
1464 | ||
1465 | ||
1466 | /************************************************* | |
1467 | * Actions at the end of handling an address * | |
1468 | *************************************************/ | |
1469 | ||
1470 | /* This is a function for processing a single address when all that can be done | |
1471 | with it has been done. | |
1472 | ||
1473 | Arguments: | |
1474 | addr points to the address block | |
1475 | result the result of the delivery attempt | |
1476 | logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC) | |
1477 | driver_type indicates which type of driver (transport, or router) was last | |
1478 | to process the address | |
1479 | logchar '=' or '-' for use when logging deliveries with => or -> | |
1480 | ||
1481 | Returns: nothing | |
1482 | */ | |
1483 | ||
1484 | static void | |
1485 | post_process_one(address_item *addr, int result, int logflags, int driver_type, | |
1486 | int logchar) | |
1487 | { | |
1488 | uschar *now = tod_stamp(tod_log); | |
1489 | uschar *driver_kind = NULL; | |
1490 | uschar *driver_name = NULL; | |
420a0d19 CE |
1491 | |
1492 | DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result); | |
1493 | ||
1494 | /* Set up driver kind and name for logging. Disable logging if the router or | |
1495 | transport has disabled it. */ | |
1496 | ||
2ea97746 | 1497 | if (driver_type == EXIM_DTYPE_TRANSPORT) |
420a0d19 | 1498 | { |
2ea97746 | 1499 | if (addr->transport) |
420a0d19 CE |
1500 | { |
1501 | driver_name = addr->transport->name; | |
1502 | driver_kind = US" transport"; | |
2ea97746 | 1503 | f.disable_logging = addr->transport->disable_logging; |
420a0d19 CE |
1504 | } |
1505 | else driver_kind = US"transporting"; | |
1506 | } | |
2ea97746 | 1507 | else if (driver_type == EXIM_DTYPE_ROUTER) |
420a0d19 | 1508 | { |
2ea97746 | 1509 | if (addr->router) |
420a0d19 CE |
1510 | { |
1511 | driver_name = addr->router->name; | |
1512 | driver_kind = US" router"; | |
2ea97746 | 1513 | f.disable_logging = addr->router->disable_logging; |
420a0d19 CE |
1514 | } |
1515 | else driver_kind = US"routing"; | |
1516 | } | |
1517 | ||
1518 | /* If there's an error message set, ensure that it contains only printing | |
1519 | characters - it should, but occasionally things slip in and this at least | |
1520 | stops the log format from getting wrecked. We also scan the message for an LDAP | |
1521 | expansion item that has a password setting, and flatten the password. This is a | |
1522 | fudge, but I don't know a cleaner way of doing this. (If the item is badly | |
1523 | malformed, it won't ever have gone near LDAP.) */ | |
1524 | ||
2ea97746 | 1525 | if (addr->message) |
420a0d19 | 1526 | { |
2ea97746 CE |
1527 | const uschar * s = string_printing(addr->message); |
1528 | ||
1529 | /* deconst cast ok as string_printing known to have alloc'n'copied */ | |
1530 | addr->message = expand_hide_passwords(US s); | |
420a0d19 CE |
1531 | } |
1532 | ||
1533 | /* If we used a transport that has one of the "return_output" options set, and | |
1534 | if it did in fact generate some output, then for return_output we treat the | |
1535 | message as failed if it was not already set that way, so that the output gets | |
1536 | returned to the sender, provided there is a sender to send it to. For | |
1537 | return_fail_output, do this only if the delivery failed. Otherwise we just | |
1538 | unlink the file, and remove the name so that if the delivery failed, we don't | |
1539 | try to send back an empty or unwanted file. The log_output options operate only | |
1540 | on a non-empty file. | |
1541 | ||
1542 | In any case, we close the message file, because we cannot afford to leave a | |
1543 | file-descriptor for one address while processing (maybe very many) others. */ | |
1544 | ||
2ea97746 | 1545 | if (addr->return_file >= 0 && addr->return_filename) |
420a0d19 CE |
1546 | { |
1547 | BOOL return_output = FALSE; | |
1548 | struct stat statbuf; | |
1549 | (void)EXIMfsync(addr->return_file); | |
1550 | ||
1551 | /* If there is no output, do nothing. */ | |
1552 | ||
1553 | if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0) | |
1554 | { | |
1555 | transport_instance *tb = addr->transport; | |
1556 | ||
1557 | /* Handle logging options */ | |
1558 | ||
2ea97746 CE |
1559 | if ( tb->log_output |
1560 | || result == FAIL && tb->log_fail_output | |
1561 | || result == DEFER && tb->log_defer_output | |
1562 | ) | |
420a0d19 CE |
1563 | { |
1564 | uschar *s; | |
1565 | FILE *f = Ufopen(addr->return_filename, "rb"); | |
2ea97746 | 1566 | if (!f) |
420a0d19 CE |
1567 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output " |
1568 | "from %s transport: %s", addr->return_filename, tb->name, | |
1569 | strerror(errno)); | |
1570 | else | |
2ea97746 | 1571 | if ((s = US Ufgets(big_buffer, big_buffer_size, f))) |
420a0d19 CE |
1572 | { |
1573 | uschar *p = big_buffer + Ustrlen(big_buffer); | |
2ea97746 | 1574 | const uschar * sp; |
420a0d19 CE |
1575 | while (p > big_buffer && isspace(p[-1])) p--; |
1576 | *p = 0; | |
2ea97746 | 1577 | sp = string_printing(big_buffer); |
420a0d19 | 1578 | log_write(0, LOG_MAIN, "<%s>: %s transport output: %s", |
2ea97746 | 1579 | addr->address, tb->name, sp); |
420a0d19 | 1580 | } |
2ea97746 | 1581 | (void)fclose(f); |
420a0d19 CE |
1582 | } |
1583 | ||
1584 | /* Handle returning options, but only if there is an address to return | |
1585 | the text to. */ | |
1586 | ||
2ea97746 | 1587 | if (sender_address[0] != 0 || addr->prop.errors_address) |
420a0d19 CE |
1588 | if (tb->return_output) |
1589 | { | |
1590 | addr->transport_return = result = FAIL; | |
2ea97746 | 1591 | if (addr->basic_errno == 0 && !addr->message) |
420a0d19 CE |
1592 | addr->message = US"return message generated"; |
1593 | return_output = TRUE; | |
1594 | } | |
1595 | else | |
1596 | if (tb->return_fail_output && result == FAIL) return_output = TRUE; | |
420a0d19 CE |
1597 | } |
1598 | ||
1599 | /* Get rid of the file unless it might be returned, but close it in | |
1600 | all cases. */ | |
1601 | ||
1602 | if (!return_output) | |
1603 | { | |
1604 | Uunlink(addr->return_filename); | |
1605 | addr->return_filename = NULL; | |
1606 | addr->return_file = -1; | |
1607 | } | |
1608 | ||
1609 | (void)close(addr->return_file); | |
1610 | } | |
1611 | ||
1612 | /* The success case happens only after delivery by a transport. */ | |
1613 | ||
1614 | if (result == OK) | |
1615 | { | |
1616 | addr->next = addr_succeed; | |
1617 | addr_succeed = addr; | |
1618 | ||
1619 | /* Call address_done() to ensure that we don't deliver to this address again, | |
1620 | and write appropriate things to the message log. If it is a child address, we | |
1621 | call child_done() to scan the ancestors and mark them complete if this is the | |
1622 | last child to complete. */ | |
1623 | ||
1624 | address_done(addr, now); | |
1625 | DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address); | |
1626 | ||
2ea97746 | 1627 | if (!addr->parent) |
420a0d19 CE |
1628 | deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address, |
1629 | driver_name, driver_kind); | |
1630 | else | |
1631 | { | |
1632 | deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address, | |
1633 | addr->parent->address, driver_name, driver_kind); | |
1634 | child_done(addr, now); | |
1635 | } | |
1636 | ||
2ea97746 CE |
1637 | /* Certificates for logging (via events) */ |
1638 | #ifdef SUPPORT_TLS | |
420a0d19 CE |
1639 | tls_out.ourcert = addr->ourcert; |
1640 | addr->ourcert = NULL; | |
1641 | tls_out.peercert = addr->peercert; | |
1642 | addr->peercert = NULL; | |
1643 | ||
1644 | tls_out.cipher = addr->cipher; | |
1645 | tls_out.peerdn = addr->peerdn; | |
1646 | tls_out.ocsp = addr->ocsp; | |
2ea97746 CE |
1647 | # ifdef SUPPORT_DANE |
1648 | tls_out.dane_verified = testflag(addr, af_dane_verified); | |
1649 | # endif | |
1650 | #endif | |
420a0d19 CE |
1651 | |
1652 | delivery_log(LOG_MAIN, addr, logchar, NULL); | |
1653 | ||
2ea97746 CE |
1654 | #ifdef SUPPORT_TLS |
1655 | tls_free_cert(&tls_out.ourcert); | |
1656 | tls_free_cert(&tls_out.peercert); | |
420a0d19 CE |
1657 | tls_out.cipher = NULL; |
1658 | tls_out.peerdn = NULL; | |
1659 | tls_out.ocsp = OCSP_NOT_REQ; | |
2ea97746 CE |
1660 | # ifdef SUPPORT_DANE |
1661 | tls_out.dane_verified = FALSE; | |
1662 | # endif | |
1663 | #endif | |
420a0d19 CE |
1664 | } |
1665 | ||
1666 | ||
1667 | /* Soft failure, or local delivery process failed; freezing may be | |
1668 | requested. */ | |
1669 | ||
1670 | else if (result == DEFER || result == PANIC) | |
1671 | { | |
1672 | if (result == PANIC) logflags |= LOG_PANIC; | |
1673 | ||
2ea97746 CE |
1674 | /* This puts them on the chain in reverse order. Do not change this, because |
1675 | the code for handling retries assumes that the one with the retry | |
1676 | information is last. */ | |
420a0d19 | 1677 | |
2ea97746 CE |
1678 | addr->next = addr_defer; |
1679 | addr_defer = addr; | |
420a0d19 | 1680 | |
2ea97746 CE |
1681 | /* The only currently implemented special action is to freeze the |
1682 | message. Logging of this is done later, just before the -H file is | |
1683 | updated. */ | |
420a0d19 | 1684 | |
2ea97746 CE |
1685 | if (addr->special_action == SPECIAL_FREEZE) |
1686 | { | |
1687 | f.deliver_freeze = TRUE; | |
1688 | deliver_frozen_at = time(NULL); | |
1689 | update_spool = TRUE; | |
1690 | } | |
420a0d19 | 1691 | |
2ea97746 CE |
1692 | /* If doing a 2-stage queue run, we skip writing to either the message |
1693 | log or the main log for SMTP defers. */ | |
420a0d19 | 1694 | |
2ea97746 CE |
1695 | if (!f.queue_2stage || addr->basic_errno != 0) |
1696 | deferral_log(addr, now, logflags, driver_name, driver_kind); | |
420a0d19 CE |
1697 | } |
1698 | ||
1699 | ||
1700 | /* Hard failure. If there is an address to which an error message can be sent, | |
1701 | put this address on the failed list. If not, put it on the deferred list and | |
1702 | freeze the mail message for human attention. The latter action can also be | |
1703 | explicitly requested by a router or transport. */ | |
1704 | ||
1705 | else | |
1706 | { | |
1707 | /* If this is a delivery error, or a message for which no replies are | |
1708 | wanted, and the message's age is greater than ignore_bounce_errors_after, | |
1709 | force the af_ignore_error flag. This will cause the address to be discarded | |
1710 | later (with a log entry). */ | |
1711 | ||
2ea97746 CE |
1712 | if (!*sender_address && message_age >= ignore_bounce_errors_after) |
1713 | addr->prop.ignore_error = TRUE; | |
420a0d19 CE |
1714 | |
1715 | /* Freeze the message if requested, or if this is a bounce message (or other | |
1716 | message with null sender) and this address does not have its own errors | |
1717 | address. However, don't freeze if errors are being ignored. The actual code | |
1718 | to ignore occurs later, instead of sending a message. Logging of freezing | |
1719 | occurs later, just before writing the -H file. */ | |
1720 | ||
2ea97746 CE |
1721 | if ( !addr->prop.ignore_error |
1722 | && ( addr->special_action == SPECIAL_FREEZE | |
1723 | || (sender_address[0] == 0 && !addr->prop.errors_address) | |
1724 | ) ) | |
1725 | { | |
1726 | frozen_info = addr->special_action == SPECIAL_FREEZE | |
1727 | ? US"" | |
1728 | : f.sender_local && !f.local_error_message | |
1729 | ? US" (message created with -f <>)" | |
1730 | : US" (delivery error message)"; | |
1731 | f.deliver_freeze = TRUE; | |
420a0d19 CE |
1732 | deliver_frozen_at = time(NULL); |
1733 | update_spool = TRUE; | |
1734 | ||
1735 | /* The address is put on the defer rather than the failed queue, because | |
1736 | the message is being retained. */ | |
1737 | ||
1738 | addr->next = addr_defer; | |
1739 | addr_defer = addr; | |
1740 | } | |
1741 | ||
1742 | /* Don't put the address on the nonrecipients tree yet; wait until an | |
1743 | error message has been successfully sent. */ | |
1744 | ||
1745 | else | |
1746 | { | |
1747 | addr->next = addr_failed; | |
1748 | addr_failed = addr; | |
1749 | } | |
1750 | ||
2ea97746 | 1751 | failure_log(addr, driver_name ? NULL : driver_kind, now); |
420a0d19 CE |
1752 | } |
1753 | ||
1754 | /* Ensure logging is turned on again in all cases */ | |
1755 | ||
2ea97746 | 1756 | f.disable_logging = FALSE; |
420a0d19 CE |
1757 | } |
1758 | ||
1759 | ||
1760 | ||
1761 | ||
1762 | /************************************************* | |
1763 | * Address-independent error * | |
1764 | *************************************************/ | |
1765 | ||
1766 | /* This function is called when there's an error that is not dependent on a | |
1767 | particular address, such as an expansion string failure. It puts the error into | |
1768 | all the addresses in a batch, logs the incident on the main and panic logs, and | |
1769 | clears the expansions. It is mostly called from local_deliver(), but can be | |
1770 | called for a remote delivery via findugid(). | |
1771 | ||
1772 | Arguments: | |
1773 | logit TRUE if (MAIN+PANIC) logging required | |
1774 | addr the first of the chain of addresses | |
1775 | code the error code | |
1776 | format format string for error message, or NULL if already set in addr | |
1777 | ... arguments for the format | |
1778 | ||
1779 | Returns: nothing | |
1780 | */ | |
1781 | ||
1782 | static void | |
1783 | common_error(BOOL logit, address_item *addr, int code, uschar *format, ...) | |
1784 | { | |
1785 | address_item *addr2; | |
1786 | addr->basic_errno = code; | |
1787 | ||
2ea97746 | 1788 | if (format) |
420a0d19 CE |
1789 | { |
1790 | va_list ap; | |
2ea97746 CE |
1791 | gstring * g; |
1792 | ||
420a0d19 | 1793 | va_start(ap, format); |
2ea97746 | 1794 | g = string_vformat(NULL, TRUE, CS format, ap); |
420a0d19 | 1795 | va_end(ap); |
2ea97746 | 1796 | addr->message = string_from_gstring(g); |
420a0d19 CE |
1797 | } |
1798 | ||
2ea97746 | 1799 | for (addr2 = addr->next; addr2; addr2 = addr2->next) |
420a0d19 CE |
1800 | { |
1801 | addr2->basic_errno = code; | |
1802 | addr2->message = addr->message; | |
1803 | } | |
1804 | ||
1805 | if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message); | |
1806 | deliver_set_expansions(NULL); | |
1807 | } | |
1808 | ||
1809 | ||
1810 | ||
1811 | ||
1812 | /************************************************* | |
1813 | * Check a "never users" list * | |
1814 | *************************************************/ | |
1815 | ||
1816 | /* This function is called to check whether a uid is on one of the two "never | |
1817 | users" lists. | |
1818 | ||
1819 | Arguments: | |
1820 | uid the uid to be checked | |
1821 | nusers the list to be scanned; the first item in the list is the count | |
1822 | ||
1823 | Returns: TRUE if the uid is on the list | |
1824 | */ | |
1825 | ||
1826 | static BOOL | |
1827 | check_never_users(uid_t uid, uid_t *nusers) | |
1828 | { | |
1829 | int i; | |
2ea97746 | 1830 | if (!nusers) return FALSE; |
420a0d19 CE |
1831 | for (i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE; |
1832 | return FALSE; | |
1833 | } | |
1834 | ||
1835 | ||
1836 | ||
1837 | /************************************************* | |
1838 | * Find uid and gid for a transport * | |
1839 | *************************************************/ | |
1840 | ||
1841 | /* This function is called for both local and remote deliveries, to find the | |
1842 | uid/gid under which to run the delivery. The values are taken preferentially | |
1843 | from the transport (either explicit or deliver_as_creator), then from the | |
1844 | address (i.e. the router), and if nothing is set, the exim uid/gid are used. If | |
1845 | the resulting uid is on the "never_users" or the "fixed_never_users" list, a | |
1846 | panic error is logged, and the function fails (which normally leads to delivery | |
1847 | deferral). | |
1848 | ||
1849 | Arguments: | |
1850 | addr the address (possibly a chain) | |
1851 | tp the transport | |
1852 | uidp pointer to uid field | |
1853 | gidp pointer to gid field | |
1854 | igfp pointer to the use_initgroups field | |
1855 | ||
1856 | Returns: FALSE if failed - error has been set in address(es) | |
1857 | */ | |
1858 | ||
1859 | static BOOL | |
1860 | findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp, | |
1861 | BOOL *igfp) | |
1862 | { | |
2ea97746 | 1863 | uschar *nuname; |
420a0d19 CE |
1864 | BOOL gid_set = FALSE; |
1865 | ||
1866 | /* Default initgroups flag comes from the transport */ | |
1867 | ||
1868 | *igfp = tp->initgroups; | |
1869 | ||
1870 | /* First see if there's a gid on the transport, either fixed or expandable. | |
1871 | The expanding function always logs failure itself. */ | |
1872 | ||
1873 | if (tp->gid_set) | |
1874 | { | |
1875 | *gidp = tp->gid; | |
1876 | gid_set = TRUE; | |
1877 | } | |
2ea97746 | 1878 | else if (tp->expand_gid) |
420a0d19 | 1879 | { |
2ea97746 CE |
1880 | if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp, |
1881 | &(addr->message))) | |
420a0d19 CE |
1882 | { |
1883 | common_error(FALSE, addr, ERRNO_GIDFAIL, NULL); | |
1884 | return FALSE; | |
1885 | } | |
2ea97746 | 1886 | gid_set = TRUE; |
420a0d19 CE |
1887 | } |
1888 | ||
1889 | /* If the transport did not set a group, see if the router did. */ | |
1890 | ||
1891 | if (!gid_set && testflag(addr, af_gid_set)) | |
1892 | { | |
1893 | *gidp = addr->gid; | |
1894 | gid_set = TRUE; | |
1895 | } | |
1896 | ||
1897 | /* Pick up a uid from the transport if one is set. */ | |
1898 | ||
1899 | if (tp->uid_set) *uidp = tp->uid; | |
1900 | ||
1901 | /* Otherwise, try for an expandable uid field. If it ends up as a numeric id, | |
1902 | it does not provide a passwd value from which a gid can be taken. */ | |
1903 | ||
2ea97746 | 1904 | else if (tp->expand_uid) |
420a0d19 CE |
1905 | { |
1906 | struct passwd *pw; | |
1907 | if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw, | |
1908 | uidp, &(addr->message))) | |
1909 | { | |
1910 | common_error(FALSE, addr, ERRNO_UIDFAIL, NULL); | |
1911 | return FALSE; | |
1912 | } | |
2ea97746 | 1913 | if (!gid_set && pw) |
420a0d19 CE |
1914 | { |
1915 | *gidp = pw->pw_gid; | |
1916 | gid_set = TRUE; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | /* If the transport doesn't set the uid, test the deliver_as_creator flag. */ | |
1921 | ||
1922 | else if (tp->deliver_as_creator) | |
1923 | { | |
1924 | *uidp = originator_uid; | |
1925 | if (!gid_set) | |
1926 | { | |
1927 | *gidp = originator_gid; | |
1928 | gid_set = TRUE; | |
1929 | } | |
1930 | } | |
1931 | ||
1932 | /* Otherwise see if the address specifies the uid and if so, take it and its | |
1933 | initgroups flag. */ | |
1934 | ||
1935 | else if (testflag(addr, af_uid_set)) | |
1936 | { | |
1937 | *uidp = addr->uid; | |
1938 | *igfp = testflag(addr, af_initgroups); | |
1939 | } | |
1940 | ||
1941 | /* Nothing has specified the uid - default to the Exim user, and group if the | |
1942 | gid is not set. */ | |
1943 | ||
1944 | else | |
1945 | { | |
1946 | *uidp = exim_uid; | |
1947 | if (!gid_set) | |
1948 | { | |
1949 | *gidp = exim_gid; | |
1950 | gid_set = TRUE; | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | /* If no gid is set, it is a disaster. We default to the Exim gid only if | |
1955 | defaulting to the Exim uid. In other words, if the configuration has specified | |
1956 | a uid, it must also provide a gid. */ | |
1957 | ||
1958 | if (!gid_set) | |
1959 | { | |
1960 | common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for " | |
1961 | "%s transport", tp->name); | |
1962 | return FALSE; | |
1963 | } | |
1964 | ||
1965 | /* Check that the uid is not on the lists of banned uids that may not be used | |
1966 | for delivery processes. */ | |
1967 | ||
2ea97746 CE |
1968 | nuname = check_never_users(*uidp, never_users) |
1969 | ? US"never_users" | |
1970 | : check_never_users(*uidp, fixed_never_users) | |
1971 | ? US"fixed_never_users" | |
1972 | : NULL; | |
1973 | if (nuname) | |
420a0d19 CE |
1974 | { |
1975 | common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport " | |
1976 | "is on the %s list", (long int)(*uidp), tp->name, nuname); | |
1977 | return FALSE; | |
1978 | } | |
1979 | ||
1980 | /* All is well */ | |
1981 | ||
1982 | return TRUE; | |
1983 | } | |
1984 | ||
1985 | ||
1986 | ||
1987 | ||
1988 | /************************************************* | |
1989 | * Check the size of a message for a transport * | |
1990 | *************************************************/ | |
1991 | ||
1992 | /* Checks that the message isn't too big for the selected transport. | |
1993 | This is called only when it is known that the limit is set. | |
1994 | ||
1995 | Arguments: | |
1996 | tp the transport | |
1997 | addr the (first) address being delivered | |
1998 | ||
1999 | Returns: OK | |
2000 | DEFER expansion failed or did not yield an integer | |
2001 | FAIL message too big | |
2002 | */ | |
2003 | ||
2004 | int | |
2005 | check_message_size(transport_instance *tp, address_item *addr) | |
2006 | { | |
2007 | int rc = OK; | |
2008 | int size_limit; | |
2009 | ||
2010 | deliver_set_expansions(addr); | |
2011 | size_limit = expand_string_integer(tp->message_size_limit, TRUE); | |
2012 | deliver_set_expansions(NULL); | |
2013 | ||
2ea97746 | 2014 | if (expand_string_message) |
420a0d19 CE |
2015 | { |
2016 | rc = DEFER; | |
2ea97746 CE |
2017 | addr->message = size_limit == -1 |
2018 | ? string_sprintf("failed to expand message_size_limit " | |
2019 | "in %s transport: %s", tp->name, expand_string_message) | |
2020 | : string_sprintf("invalid message_size_limit " | |
420a0d19 CE |
2021 | "in %s transport: %s", tp->name, expand_string_message); |
2022 | } | |
2023 | else if (size_limit > 0 && message_size > size_limit) | |
2024 | { | |
2025 | rc = FAIL; | |
2026 | addr->message = | |
2027 | string_sprintf("message is too big (transport limit = %d)", | |
2028 | size_limit); | |
2029 | } | |
2030 | ||
2031 | return rc; | |
2032 | } | |
2033 | ||
2034 | ||
2035 | ||
2036 | /************************************************* | |
2037 | * Transport-time check for a previous delivery * | |
2038 | *************************************************/ | |
2039 | ||
2040 | /* Check that this base address hasn't previously been delivered to its routed | |
2041 | transport. If it has been delivered, mark it done. The check is necessary at | |
2042 | delivery time in order to handle homonymic addresses correctly in cases where | |
2043 | the pattern of redirection changes between delivery attempts (so the unique | |
2044 | fields change). Non-homonymic previous delivery is detected earlier, at routing | |
2045 | time (which saves unnecessary routing). | |
2046 | ||
2047 | Arguments: | |
2048 | addr the address item | |
2049 | testing TRUE if testing wanted only, without side effects | |
2050 | ||
2051 | Returns: TRUE if previously delivered by the transport | |
2052 | */ | |
2053 | ||
2054 | static BOOL | |
2055 | previously_transported(address_item *addr, BOOL testing) | |
2056 | { | |
2057 | (void)string_format(big_buffer, big_buffer_size, "%s/%s", | |
2058 | addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name); | |
2059 | ||
2060 | if (tree_search(tree_nonrecipients, big_buffer) != 0) | |
2061 | { | |
2062 | DEBUG(D_deliver|D_route|D_transport) | |
2063 | debug_printf("%s was previously delivered (%s transport): discarded\n", | |
2064 | addr->address, addr->transport->name); | |
2065 | if (!testing) child_done(addr, tod_stamp(tod_log)); | |
2066 | return TRUE; | |
2067 | } | |
2068 | ||
2069 | return FALSE; | |
2070 | } | |
2071 | ||
2072 | ||
2073 | ||
2074 | /****************************************************** | |
2075 | * Check for a given header in a header string * | |
2076 | ******************************************************/ | |
2077 | ||
2078 | /* This function is used when generating quota warnings. The configuration may | |
2079 | specify any header lines it likes in quota_warn_message. If certain of them are | |
2080 | missing, defaults are inserted, so we need to be able to test for the presence | |
2081 | of a given header. | |
2082 | ||
2083 | Arguments: | |
2084 | hdr the required header name | |
2085 | hstring the header string | |
2086 | ||
2087 | Returns: TRUE the header is in the string | |
2088 | FALSE the header is not in the string | |
2089 | */ | |
2090 | ||
2091 | static BOOL | |
2092 | contains_header(uschar *hdr, uschar *hstring) | |
2093 | { | |
2094 | int len = Ustrlen(hdr); | |
2095 | uschar *p = hstring; | |
2096 | while (*p != 0) | |
2097 | { | |
2098 | if (strncmpic(p, hdr, len) == 0) | |
2099 | { | |
2100 | p += len; | |
2101 | while (*p == ' ' || *p == '\t') p++; | |
2102 | if (*p == ':') return TRUE; | |
2103 | } | |
2104 | while (*p != 0 && *p != '\n') p++; | |
2105 | if (*p == '\n') p++; | |
2106 | } | |
2107 | return FALSE; | |
2108 | } | |
2109 | ||
2110 | ||
2111 | ||
2112 | ||
2113 | /************************************************* | |
2114 | * Perform a local delivery * | |
2115 | *************************************************/ | |
2116 | ||
2117 | /* Each local delivery is performed in a separate process which sets its | |
2118 | uid and gid as specified. This is a safer way than simply changing and | |
2119 | restoring using seteuid(); there is a body of opinion that seteuid() cannot be | |
2120 | used safely. From release 4, Exim no longer makes any use of it. Besides, not | |
2121 | all systems have seteuid(). | |
2122 | ||
2123 | If the uid/gid are specified in the transport_instance, they are used; the | |
2124 | transport initialization must ensure that either both or neither are set. | |
2125 | Otherwise, the values associated with the address are used. If neither are set, | |
2126 | it is a configuration error. | |
2127 | ||
2128 | The transport or the address may specify a home directory (transport over- | |
2129 | rides), and if they do, this is set as $home. If neither have set a working | |
2130 | directory, this value is used for that as well. Otherwise $home is left unset | |
2131 | and the cwd is set to "/" - a directory that should be accessible to all users. | |
2132 | ||
2133 | Using a separate process makes it more complicated to get error information | |
2134 | back. We use a pipe to pass the return code and also an error code and error | |
2135 | text string back to the parent process. | |
2136 | ||
2137 | Arguments: | |
2138 | addr points to an address block for this delivery; for "normal" local | |
2139 | deliveries this is the only address to be delivered, but for | |
2140 | pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe) | |
2141 | a number of addresses can be handled simultaneously, and in this | |
2142 | case addr will point to a chain of addresses with the same | |
2143 | characteristics. | |
2144 | ||
2145 | shadowing TRUE if running a shadow transport; this causes output from pipes | |
2146 | to be ignored. | |
2147 | ||
2148 | Returns: nothing | |
2149 | */ | |
2150 | ||
2151 | static void | |
2152 | deliver_local(address_item *addr, BOOL shadowing) | |
2153 | { | |
2154 | BOOL use_initgroups; | |
2155 | uid_t uid; | |
2156 | gid_t gid; | |
2157 | int status, len, rc; | |
2158 | int pfd[2]; | |
2159 | pid_t pid; | |
2160 | uschar *working_directory; | |
2161 | address_item *addr2; | |
2162 | transport_instance *tp = addr->transport; | |
2163 | ||
2164 | /* Set up the return path from the errors or sender address. If the transport | |
2165 | has its own return path setting, expand it and replace the existing value. */ | |
2166 | ||
2ea97746 CE |
2167 | if(addr->prop.errors_address) |
2168 | return_path = addr->prop.errors_address; | |
420a0d19 | 2169 | #ifdef EXPERIMENTAL_SRS |
2ea97746 CE |
2170 | else if (addr->prop.srs_sender) |
2171 | return_path = addr->prop.srs_sender; | |
420a0d19 CE |
2172 | #endif |
2173 | else | |
2174 | return_path = sender_address; | |
2175 | ||
2ea97746 | 2176 | if (tp->return_path) |
420a0d19 CE |
2177 | { |
2178 | uschar *new_return_path = expand_string(tp->return_path); | |
2ea97746 | 2179 | if (!new_return_path) |
420a0d19 | 2180 | { |
2ea97746 | 2181 | if (!f.expand_string_forcedfail) |
420a0d19 CE |
2182 | { |
2183 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, | |
2184 | US"Failed to expand return path \"%s\" in %s transport: %s", | |
2185 | tp->return_path, tp->name, expand_string_message); | |
2186 | return; | |
2187 | } | |
2188 | } | |
2189 | else return_path = new_return_path; | |
2190 | } | |
2191 | ||
2192 | /* For local deliveries, one at a time, the value used for logging can just be | |
2193 | set directly, once and for all. */ | |
2194 | ||
2195 | used_return_path = return_path; | |
2196 | ||
2197 | /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message | |
2198 | gets put into the address(es), and the expansions are unset, so we can just | |
2199 | return. */ | |
2200 | ||
2201 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return; | |
2202 | ||
2203 | /* See if either the transport or the address specifies a home directory. A | |
2204 | home directory set in the address may already be expanded; a flag is set to | |
2205 | indicate that. In other cases we must expand it. */ | |
2206 | ||
2ea97746 CE |
2207 | if ( (deliver_home = tp->home_dir) /* Set in transport, or */ |
2208 | || ( (deliver_home = addr->home_dir) /* Set in address and */ | |
2209 | && !testflag(addr, af_home_expanded) /* not expanded */ | |
2210 | ) ) | |
420a0d19 CE |
2211 | { |
2212 | uschar *rawhome = deliver_home; | |
2213 | deliver_home = NULL; /* in case it contains $home */ | |
2ea97746 | 2214 | if (!(deliver_home = expand_string(rawhome))) |
420a0d19 CE |
2215 | { |
2216 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed " | |
2217 | "to expand for %s transport: %s", rawhome, tp->name, | |
2218 | expand_string_message); | |
2219 | return; | |
2220 | } | |
2221 | if (*deliver_home != '/') | |
2222 | { | |
2223 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" " | |
2224 | "is not absolute for %s transport", deliver_home, tp->name); | |
2225 | return; | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | /* See if either the transport or the address specifies a current directory, | |
2230 | and if so, expand it. If nothing is set, use the home directory, unless it is | |
2231 | also unset in which case use "/", which is assumed to be a directory to which | |
2232 | all users have access. It is necessary to be in a visible directory for some | |
2233 | operating systems when running pipes, as some commands (e.g. "rm" under Solaris | |
2234 | 2.5) require this. */ | |
2235 | ||
2ea97746 CE |
2236 | working_directory = tp->current_dir ? tp->current_dir : addr->current_dir; |
2237 | if (working_directory) | |
420a0d19 CE |
2238 | { |
2239 | uschar *raw = working_directory; | |
2ea97746 | 2240 | if (!(working_directory = expand_string(raw))) |
420a0d19 CE |
2241 | { |
2242 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" " | |
2243 | "failed to expand for %s transport: %s", raw, tp->name, | |
2244 | expand_string_message); | |
2245 | return; | |
2246 | } | |
2247 | if (*working_directory != '/') | |
2248 | { | |
2249 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path " | |
2250 | "\"%s\" is not absolute for %s transport", working_directory, tp->name); | |
2251 | return; | |
2252 | } | |
2253 | } | |
2ea97746 | 2254 | else working_directory = deliver_home ? deliver_home : US"/"; |
420a0d19 CE |
2255 | |
2256 | /* If one of the return_output flags is set on the transport, create and open a | |
2257 | file in the message log directory for the transport to write its output onto. | |
2258 | This is mainly used by pipe transports. The file needs to be unique to the | |
2259 | address. This feature is not available for shadow transports. */ | |
2260 | ||
2ea97746 CE |
2261 | if ( !shadowing |
2262 | && ( tp->return_output || tp->return_fail_output | |
2263 | || tp->log_output || tp->log_fail_output || tp->log_defer_output | |
2264 | ) ) | |
420a0d19 | 2265 | { |
2ea97746 CE |
2266 | uschar * error; |
2267 | ||
420a0d19 | 2268 | addr->return_filename = |
2ea97746 CE |
2269 | spool_fname(US"msglog", message_subdir, message_id, |
2270 | string_sprintf("-%d-%d", getpid(), return_count++)); | |
2271 | ||
2272 | if ((addr->return_file = open_msglog_file(addr->return_filename, 0400, &error)) < 0) | |
420a0d19 CE |
2273 | { |
2274 | common_error(TRUE, addr, errno, US"Unable to %s file for %s transport " | |
2275 | "to return message: %s", error, tp->name, strerror(errno)); | |
2276 | return; | |
2277 | } | |
2278 | } | |
2279 | ||
2280 | /* Create the pipe for inter-process communication. */ | |
2281 | ||
2282 | if (pipe(pfd) != 0) | |
2283 | { | |
2284 | common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s", | |
2285 | strerror(errno)); | |
2286 | return; | |
2287 | } | |
2288 | ||
2289 | /* Now fork the process to do the real work in the subprocess, but first | |
2290 | ensure that all cached resources are freed so that the subprocess starts with | |
2291 | a clean slate and doesn't interfere with the parent process. */ | |
2292 | ||
2293 | search_tidyup(); | |
2294 | ||
2295 | if ((pid = fork()) == 0) | |
2296 | { | |
2297 | BOOL replicate = TRUE; | |
2298 | ||
2299 | /* Prevent core dumps, as we don't want them in users' home directories. | |
2300 | HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that | |
2301 | system. Some experimental/developing systems (e.g. GNU/Hurd) may define | |
2302 | RLIMIT_CORE but not support it in setrlimit(). For such systems, do not | |
2303 | complain if the error is "not supported". | |
2304 | ||
2305 | There are two scenarios where changing the max limit has an effect. In one, | |
2306 | the user is using a .forward and invoking a command of their choice via pipe; | |
2307 | for these, we do need the max limit to be 0 unless the admin chooses to | |
2308 | permit an increased limit. In the other, the command is invoked directly by | |
2309 | the transport and is under administrator control, thus being able to raise | |
2310 | the limit aids in debugging. So there's no general always-right answer. | |
2311 | ||
2312 | Thus we inhibit core-dumps completely but let individual transports, while | |
2313 | still root, re-raise the limits back up to aid debugging. We make the | |
2314 | default be no core-dumps -- few enough people can use core dumps in | |
2315 | diagnosis that it's reasonable to make them something that has to be explicitly requested. | |
2316 | */ | |
2317 | ||
2ea97746 | 2318 | #ifdef RLIMIT_CORE |
420a0d19 CE |
2319 | struct rlimit rl; |
2320 | rl.rlim_cur = 0; | |
2321 | rl.rlim_max = 0; | |
2322 | if (setrlimit(RLIMIT_CORE, &rl) < 0) | |
2323 | { | |
2ea97746 | 2324 | # ifdef SETRLIMIT_NOT_SUPPORTED |
420a0d19 | 2325 | if (errno != ENOSYS && errno != ENOTSUP) |
2ea97746 | 2326 | # endif |
420a0d19 CE |
2327 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s", |
2328 | strerror(errno)); | |
2329 | } | |
2ea97746 | 2330 | #endif |
420a0d19 CE |
2331 | |
2332 | /* Reset the random number generator, so different processes don't all | |
2333 | have the same sequence. */ | |
2334 | ||
2335 | random_seed = 0; | |
2336 | ||
2337 | /* If the transport has a setup entry, call this first, while still | |
2338 | privileged. (Appendfile uses this to expand quota, for example, while | |
2339 | able to read private files.) */ | |
2340 | ||
2ea97746 | 2341 | if (addr->transport->setup) |
420a0d19 CE |
2342 | switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid, |
2343 | &(addr->message))) | |
2344 | { | |
2345 | case DEFER: | |
2ea97746 CE |
2346 | addr->transport_return = DEFER; |
2347 | goto PASS_BACK; | |
420a0d19 CE |
2348 | |
2349 | case FAIL: | |
2ea97746 CE |
2350 | addr->transport_return = PANIC; |
2351 | goto PASS_BACK; | |
420a0d19 | 2352 | } |
420a0d19 CE |
2353 | |
2354 | /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as | |
2355 | when the process becomes unprivileged, it won't be able to write to the | |
2356 | process log. SIGHUP is ignored throughout exim, except when it is being | |
2357 | run as a daemon. */ | |
2358 | ||
2359 | signal(SIGINT, SIG_IGN); | |
2360 | signal(SIGTERM, SIG_IGN); | |
2361 | signal(SIGUSR1, SIG_IGN); | |
2362 | ||
2363 | /* Close the unwanted half of the pipe, and set close-on-exec for the other | |
2364 | half - for transports that exec things (e.g. pipe). Then set the required | |
2365 | gid/uid. */ | |
2366 | ||
2367 | (void)close(pfd[pipe_read]); | |
2368 | (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) | | |
2369 | FD_CLOEXEC); | |
2370 | exim_setugid(uid, gid, use_initgroups, | |
2371 | string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part, | |
2372 | addr->address, addr->transport->name)); | |
2373 | ||
2374 | DEBUG(D_deliver) | |
2375 | { | |
2376 | address_item *batched; | |
2377 | debug_printf(" home=%s current=%s\n", deliver_home, working_directory); | |
2ea97746 | 2378 | for (batched = addr->next; batched; batched = batched->next) |
420a0d19 CE |
2379 | debug_printf("additional batched address: %s\n", batched->address); |
2380 | } | |
2381 | ||
2382 | /* Set an appropriate working directory. */ | |
2383 | ||
2384 | if (Uchdir(working_directory) < 0) | |
2385 | { | |
2386 | addr->transport_return = DEFER; | |
2387 | addr->basic_errno = errno; | |
2388 | addr->message = string_sprintf("failed to chdir to %s", working_directory); | |
2389 | } | |
2390 | ||
2391 | /* If successful, call the transport */ | |
2392 | ||
2393 | else | |
2394 | { | |
2395 | BOOL ok = TRUE; | |
2396 | set_process_info("delivering %s to %s using %s", message_id, | |
2397 | addr->local_part, addr->transport->name); | |
2398 | ||
2399 | /* Setting this global in the subprocess means we need never clear it */ | |
2400 | transport_name = addr->transport->name; | |
2401 | ||
2402 | /* If a transport filter has been specified, set up its argument list. | |
2403 | Any errors will get put into the address, and FALSE yielded. */ | |
2404 | ||
2ea97746 | 2405 | if (addr->transport->filter_command) |
420a0d19 CE |
2406 | { |
2407 | ok = transport_set_up_command(&transport_filter_argv, | |
2408 | addr->transport->filter_command, | |
2409 | TRUE, PANIC, addr, US"transport filter", NULL); | |
2410 | transport_filter_timeout = addr->transport->filter_timeout; | |
2411 | } | |
2412 | else transport_filter_argv = NULL; | |
2413 | ||
2414 | if (ok) | |
2415 | { | |
2416 | debug_print_string(addr->transport->debug_string); | |
2417 | replicate = !(addr->transport->info->code)(addr->transport, addr); | |
2418 | } | |
2419 | } | |
2420 | ||
2421 | /* Pass the results back down the pipe. If necessary, first replicate the | |
2422 | status in the top address to the others in the batch. The label is the | |
2423 | subject of a goto when a call to the transport's setup function fails. We | |
2424 | pass the pointer to the transport back in case it got changed as a result of | |
2425 | file_format in appendfile. */ | |
2426 | ||
2427 | PASS_BACK: | |
2428 | ||
2429 | if (replicate) replicate_status(addr); | |
2ea97746 | 2430 | for (addr2 = addr; addr2; addr2 = addr2->next) |
420a0d19 CE |
2431 | { |
2432 | int i; | |
2433 | int local_part_length = Ustrlen(addr2->local_part); | |
2434 | uschar *s; | |
2435 | int ret; | |
2436 | ||
2ea97746 CE |
2437 | if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int) |
2438 | || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count) | |
2439 | || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags) | |
2440 | || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int) | |
2441 | || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int) | |
2442 | || (ret = write(pfd[pipe_write], &addr2->delivery_usec, sizeof(int))) != sizeof(int) | |
2443 | || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int) | |
2444 | || (ret = write(pfd[pipe_write], &addr2->transport, | |
420a0d19 CE |
2445 | sizeof(transport_instance *))) != sizeof(transport_instance *) |
2446 | ||
2447 | /* For a file delivery, pass back the local part, in case the original | |
2448 | was only part of the final delivery path. This gives more complete | |
2449 | logging. */ | |
2450 | ||
2451 | || (testflag(addr2, af_file) | |
2ea97746 | 2452 | && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int) |
420a0d19 CE |
2453 | || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length |
2454 | ) | |
2455 | ) | |
2456 | ) | |
2ea97746 | 2457 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
420a0d19 CE |
2458 | ret == -1 ? strerror(errno) : "short write"); |
2459 | ||
2460 | /* Now any messages */ | |
2461 | ||
2462 | for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message) | |
2463 | { | |
2ea97746 CE |
2464 | int message_length = s ? Ustrlen(s) + 1 : 0; |
2465 | if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int) | |
2466 | || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length | |
420a0d19 | 2467 | ) |
2ea97746 | 2468 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
420a0d19 CE |
2469 | ret == -1 ? strerror(errno) : "short write"); |
2470 | } | |
2471 | } | |
2472 | ||
2473 | /* OK, this process is now done. Free any cached resources that it opened, | |
2474 | and close the pipe we were writing down before exiting. */ | |
2475 | ||
2476 | (void)close(pfd[pipe_write]); | |
2477 | search_tidyup(); | |
2478 | exit(EXIT_SUCCESS); | |
2479 | } | |
2480 | ||
2481 | /* Back in the main process: panic if the fork did not succeed. This seems | |
2482 | better than returning an error - if forking is failing it is probably best | |
2483 | not to try other deliveries for this message. */ | |
2484 | ||
2485 | if (pid < 0) | |
2486 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s", | |
2487 | addr->address); | |
2488 | ||
2489 | /* Read the pipe to get the delivery status codes and error messages. Our copy | |
2490 | of the writing end must be closed first, as otherwise read() won't return zero | |
2491 | on an empty pipe. We check that a status exists for each address before | |
2492 | overwriting the address structure. If data is missing, the default DEFER status | |
2493 | will remain. Afterwards, close the reading end. */ | |
2494 | ||
2495 | (void)close(pfd[pipe_write]); | |
2496 | ||
2ea97746 | 2497 | for (addr2 = addr; addr2; addr2 = addr2->next) |
420a0d19 | 2498 | { |
2ea97746 | 2499 | if ((len = read(pfd[pipe_read], &status, sizeof(int))) > 0) |
420a0d19 CE |
2500 | { |
2501 | int i; | |
2502 | uschar **sptr; | |
2503 | ||
2504 | addr2->transport_return = status; | |
2ea97746 | 2505 | len = read(pfd[pipe_read], &transport_count, |
420a0d19 | 2506 | sizeof(transport_count)); |
2ea97746 CE |
2507 | len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags)); |
2508 | len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int)); | |
2509 | len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int)); | |
2510 | len = read(pfd[pipe_read], &addr2->delivery_usec, sizeof(int)); | |
2511 | len = read(pfd[pipe_read], &addr2->special_action, sizeof(int)); | |
2512 | len = read(pfd[pipe_read], &addr2->transport, | |
420a0d19 CE |
2513 | sizeof(transport_instance *)); |
2514 | ||
2515 | if (testflag(addr2, af_file)) | |
2516 | { | |
2ea97746 CE |
2517 | int llen; |
2518 | if ( read(pfd[pipe_read], &llen, sizeof(int)) != sizeof(int) | |
2519 | || llen > 64*4 /* limit from rfc 5821, times I18N factor */ | |
2520 | ) | |
2521 | { | |
2522 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part length read" | |
2523 | " from delivery subprocess"); | |
2524 | break; | |
2525 | } | |
2526 | /* sanity-checked llen so disable the Coverity error */ | |
2527 | /* coverity[tainted_data] */ | |
2528 | if (read(pfd[pipe_read], big_buffer, llen) != llen) | |
2529 | { | |
2530 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part read" | |
2531 | " from delivery subprocess"); | |
2532 | break; | |
2533 | } | |
2534 | big_buffer[llen] = 0; | |
420a0d19 CE |
2535 | addr2->local_part = string_copy(big_buffer); |
2536 | } | |
2537 | ||
2ea97746 | 2538 | for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message) |
420a0d19 CE |
2539 | { |
2540 | int message_length; | |
2ea97746 | 2541 | len = read(pfd[pipe_read], &message_length, sizeof(int)); |
420a0d19 CE |
2542 | if (message_length > 0) |
2543 | { | |
2ea97746 CE |
2544 | len = read(pfd[pipe_read], big_buffer, message_length); |
2545 | big_buffer[big_buffer_size-1] = '\0'; /* guard byte */ | |
420a0d19 CE |
2546 | if (len > 0) *sptr = string_copy(big_buffer); |
2547 | } | |
2548 | } | |
2549 | } | |
2550 | ||
2551 | else | |
2552 | { | |
2553 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s " | |
2554 | "from delivery subprocess", addr2->unique); | |
2555 | break; | |
2556 | } | |
2557 | } | |
2558 | ||
2559 | (void)close(pfd[pipe_read]); | |
2560 | ||
2561 | /* Unless shadowing, write all successful addresses immediately to the journal | |
2562 | file, to ensure they are recorded asap. For homonymic addresses, use the base | |
2563 | address plus the transport name. Failure to write the journal is panic-worthy, | |
2564 | but don't stop, as it may prove possible subsequently to update the spool file | |
2565 | in order to record the delivery. */ | |
2566 | ||
2567 | if (!shadowing) | |
2568 | { | |
2ea97746 CE |
2569 | for (addr2 = addr; addr2; addr2 = addr2->next) |
2570 | if (addr2->transport_return == OK) | |
2571 | { | |
2572 | if (testflag(addr2, af_homonym)) | |
2573 | sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name); | |
2574 | else | |
2575 | sprintf(CS big_buffer, "%.500s\n", addr2->unique); | |
420a0d19 | 2576 | |
2ea97746 CE |
2577 | /* In the test harness, wait just a bit to let the subprocess finish off |
2578 | any debug output etc first. */ | |
420a0d19 | 2579 | |
2ea97746 | 2580 | if (f.running_in_test_harness) millisleep(300); |
420a0d19 | 2581 | |
2ea97746 CE |
2582 | DEBUG(D_deliver) debug_printf("journalling %s", big_buffer); |
2583 | len = Ustrlen(big_buffer); | |
2584 | if (write(journal_fd, big_buffer, len) != len) | |
2585 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s", | |
2586 | big_buffer, strerror(errno)); | |
2587 | } | |
420a0d19 CE |
2588 | |
2589 | /* Ensure the journal file is pushed out to disk. */ | |
2590 | ||
2591 | if (EXIMfsync(journal_fd) < 0) | |
2592 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s", | |
2593 | strerror(errno)); | |
2594 | } | |
2595 | ||
2596 | /* Wait for the process to finish. If it terminates with a non-zero code, | |
2597 | freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the | |
2598 | status values of all the addresses as they are. Take care to handle the case | |
2599 | when the subprocess doesn't seem to exist. This has been seen on one system | |
2600 | when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that | |
2601 | happens, wait() doesn't recognize the termination of child processes. Exim now | |
2602 | resets SIGCHLD to SIG_DFL, but this code should still be robust. */ | |
2603 | ||
2604 | while ((rc = wait(&status)) != pid) | |
420a0d19 CE |
2605 | if (rc < 0 && errno == ECHILD) /* Process has vanished */ |
2606 | { | |
2607 | log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly", | |
2608 | addr->transport->driver_name); | |
2609 | status = 0; | |
2610 | break; | |
2611 | } | |
420a0d19 CE |
2612 | |
2613 | if ((status & 0xffff) != 0) | |
2614 | { | |
2615 | int msb = (status >> 8) & 255; | |
2616 | int lsb = status & 255; | |
2617 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
2618 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
2619 | addr->special_action = SPECIAL_FREEZE; | |
2620 | log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero " | |
2621 | "status 0x%04x: %s %d", | |
2622 | addr->transport->driver_name, | |
2623 | status, | |
2ea97746 | 2624 | msb == 0 ? "terminated by signal" : "exit code", |
420a0d19 CE |
2625 | code); |
2626 | } | |
2627 | ||
2628 | /* If SPECIAL_WARN is set in the top address, send a warning message. */ | |
2629 | ||
2ea97746 | 2630 | if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message) |
420a0d19 CE |
2631 | { |
2632 | int fd; | |
2633 | uschar *warn_message; | |
2ea97746 | 2634 | pid_t pid; |
420a0d19 CE |
2635 | |
2636 | DEBUG(D_deliver) debug_printf("Warning message requested by transport\n"); | |
2637 | ||
2ea97746 | 2638 | if (!(warn_message = expand_string(addr->transport->warn_message))) |
420a0d19 CE |
2639 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning " |
2640 | "message for %s transport): %s", addr->transport->warn_message, | |
2641 | addr->transport->name, expand_string_message); | |
2ea97746 CE |
2642 | |
2643 | else if ((pid = child_open_exim(&fd)) > 0) | |
420a0d19 | 2644 | { |
2ea97746 CE |
2645 | FILE *f = fdopen(fd, "wb"); |
2646 | if (errors_reply_to && !contains_header(US"Reply-To", warn_message)) | |
2647 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
2648 | fprintf(f, "Auto-Submitted: auto-replied\n"); | |
2649 | if (!contains_header(US"From", warn_message)) | |
2650 | moan_write_from(f); | |
2651 | fprintf(f, "%s", CS warn_message); | |
420a0d19 | 2652 | |
2ea97746 | 2653 | /* Close and wait for child process to complete, without a timeout. */ |
420a0d19 | 2654 | |
2ea97746 CE |
2655 | (void)fclose(f); |
2656 | (void)child_close(pid, 0); | |
420a0d19 CE |
2657 | } |
2658 | ||
2659 | addr->special_action = SPECIAL_NONE; | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | ||
2664 | ||
2ea97746 CE |
2665 | |
2666 | /* Check transport for the given concurrency limit. Return TRUE if over | |
2667 | the limit (or an expansion failure), else FALSE and if there was a limit, | |
2668 | the key for the hints database used for the concurrency count. */ | |
2669 | ||
2670 | static BOOL | |
2671 | tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key) | |
2672 | { | |
2673 | unsigned max_parallel; | |
2674 | ||
2675 | if (!tp->max_parallel) return FALSE; | |
2676 | ||
2677 | max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE); | |
2678 | if (expand_string_message) | |
2679 | { | |
2680 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option " | |
2681 | "in %s transport (%s): %s", tp->name, addr->address, | |
2682 | expand_string_message); | |
2683 | return TRUE; | |
2684 | } | |
2685 | ||
2686 | if (max_parallel > 0) | |
2687 | { | |
2688 | uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name); | |
2689 | if (!enq_start(serialize_key, max_parallel)) | |
2690 | { | |
2691 | address_item * next; | |
2692 | DEBUG(D_transport) | |
2693 | debug_printf("skipping tpt %s because concurrency limit %u reached\n", | |
2694 | tp->name, max_parallel); | |
2695 | do | |
2696 | { | |
2697 | next = addr->next; | |
2698 | addr->message = US"concurrency limit reached for transport"; | |
2699 | addr->basic_errno = ERRNO_TRETRY; | |
2700 | post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); | |
2701 | } while ((addr = next)); | |
2702 | return TRUE; | |
2703 | } | |
2704 | *key = serialize_key; | |
2705 | } | |
2706 | return FALSE; | |
2707 | } | |
2708 | ||
2709 | ||
2710 | ||
420a0d19 CE |
2711 | /************************************************* |
2712 | * Do local deliveries * | |
2713 | *************************************************/ | |
2714 | ||
2715 | /* This function processes the list of addresses in addr_local. True local | |
2716 | deliveries are always done one address at a time. However, local deliveries can | |
2717 | be batched up in some cases. Typically this is when writing batched SMTP output | |
2718 | files for use by some external transport mechanism, or when running local | |
2719 | deliveries over LMTP. | |
2720 | ||
2721 | Arguments: None | |
2722 | Returns: Nothing | |
2723 | */ | |
2724 | ||
2725 | static void | |
2726 | do_local_deliveries(void) | |
2727 | { | |
2728 | open_db dbblock; | |
2729 | open_db *dbm_file = NULL; | |
2730 | time_t now = time(NULL); | |
2731 | ||
2732 | /* Loop until we have exhausted the supply of local deliveries */ | |
2733 | ||
2ea97746 | 2734 | while (addr_local) |
420a0d19 | 2735 | { |
2ea97746 CE |
2736 | struct timeval delivery_start; |
2737 | struct timeval deliver_time; | |
420a0d19 CE |
2738 | address_item *addr2, *addr3, *nextaddr; |
2739 | int logflags = LOG_MAIN; | |
2ea97746 | 2740 | int logchar = f.dont_deliver? '*' : '='; |
420a0d19 | 2741 | transport_instance *tp; |
2ea97746 | 2742 | uschar * serialize_key = NULL; |
420a0d19 CE |
2743 | |
2744 | /* Pick the first undelivered address off the chain */ | |
2745 | ||
2746 | address_item *addr = addr_local; | |
2747 | addr_local = addr->next; | |
2748 | addr->next = NULL; | |
2749 | ||
2750 | DEBUG(D_deliver|D_transport) | |
2751 | debug_printf("--------> %s <--------\n", addr->address); | |
2752 | ||
2753 | /* An internal disaster if there is no transport. Should not occur! */ | |
2754 | ||
2ea97746 | 2755 | if (!(tp = addr->transport)) |
420a0d19 CE |
2756 | { |
2757 | logflags |= LOG_PANIC; | |
2ea97746 CE |
2758 | f.disable_logging = FALSE; /* Jic */ |
2759 | addr->message = addr->router | |
2760 | ? string_sprintf("No transport set by %s router", addr->router->name) | |
2761 | : string_sprintf("No transport set by system filter"); | |
2762 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); | |
420a0d19 CE |
2763 | continue; |
2764 | } | |
2765 | ||
2766 | /* Check that this base address hasn't previously been delivered to this | |
2767 | transport. The check is necessary at this point to handle homonymic addresses | |
2768 | correctly in cases where the pattern of redirection changes between delivery | |
2769 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
2770 | time. */ | |
2771 | ||
2772 | if (previously_transported(addr, FALSE)) continue; | |
2773 | ||
2774 | /* There are weird cases where logging is disabled */ | |
2775 | ||
2ea97746 | 2776 | f.disable_logging = tp->disable_logging; |
420a0d19 CE |
2777 | |
2778 | /* Check for batched addresses and possible amalgamation. Skip all the work | |
2779 | if either batch_max <= 1 or there aren't any other addresses for local | |
2780 | delivery. */ | |
2781 | ||
2ea97746 | 2782 | if (tp->batch_max > 1 && addr_local) |
420a0d19 CE |
2783 | { |
2784 | int batch_count = 1; | |
2785 | BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain"); | |
2ea97746 CE |
2786 | BOOL uses_lp = ( testflag(addr, af_pfr) |
2787 | && (testflag(addr, af_file) || addr->local_part[0] == '|') | |
2788 | ) | |
2789 | || readconf_depends((driver_instance *)tp, US"local_part"); | |
420a0d19 CE |
2790 | uschar *batch_id = NULL; |
2791 | address_item **anchor = &addr_local; | |
2792 | address_item *last = addr; | |
2793 | address_item *next; | |
2794 | ||
2795 | /* Expand the batch_id string for comparison with other addresses. | |
2796 | Expansion failure suppresses batching. */ | |
2797 | ||
2ea97746 | 2798 | if (tp->batch_id) |
420a0d19 CE |
2799 | { |
2800 | deliver_set_expansions(addr); | |
2801 | batch_id = expand_string(tp->batch_id); | |
2802 | deliver_set_expansions(NULL); | |
2ea97746 | 2803 | if (!batch_id) |
420a0d19 CE |
2804 | { |
2805 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2806 | "in %s transport (%s): %s", tp->name, addr->address, | |
2807 | expand_string_message); | |
2808 | batch_count = tp->batch_max; | |
2809 | } | |
2810 | } | |
2811 | ||
2812 | /* Until we reach the batch_max limit, pick off addresses which have the | |
2813 | same characteristics. These are: | |
2814 | ||
2815 | same transport | |
2816 | not previously delivered (see comment about 50 lines above) | |
2817 | same local part if the transport's configuration contains $local_part | |
2818 | or if this is a file or pipe delivery from a redirection | |
2819 | same domain if the transport's configuration contains $domain | |
2820 | same errors address | |
2821 | same additional headers | |
2822 | same headers to be removed | |
2823 | same uid/gid for running the transport | |
2824 | same first host if a host list is set | |
2825 | */ | |
2826 | ||
2ea97746 | 2827 | while ((next = *anchor) && batch_count < tp->batch_max) |
420a0d19 CE |
2828 | { |
2829 | BOOL ok = | |
2ea97746 CE |
2830 | tp == next->transport |
2831 | && !previously_transported(next, TRUE) | |
2832 | && testflag(addr, af_pfr) == testflag(next, af_pfr) | |
2833 | && testflag(addr, af_file) == testflag(next, af_file) | |
2834 | && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0) | |
2835 | && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0) | |
2836 | && same_strings(next->prop.errors_address, addr->prop.errors_address) | |
2837 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
2838 | && same_strings(next->prop.remove_headers, addr->prop.remove_headers) | |
2839 | && same_ugid(tp, addr, next) | |
2840 | && ( !addr->host_list && !next->host_list | |
2841 | || addr->host_list | |
2842 | && next->host_list | |
2843 | && Ustrcmp(addr->host_list->name, next->host_list->name) == 0 | |
2844 | ); | |
420a0d19 CE |
2845 | |
2846 | /* If the transport has a batch_id setting, batch_id will be non-NULL | |
2847 | from the expansion outside the loop. Expand for this address and compare. | |
2848 | Expansion failure makes this address ineligible for batching. */ | |
2849 | ||
2ea97746 | 2850 | if (ok && batch_id) |
420a0d19 CE |
2851 | { |
2852 | uschar *bid; | |
2853 | address_item *save_nextnext = next->next; | |
2854 | next->next = NULL; /* Expansion for a single address */ | |
2855 | deliver_set_expansions(next); | |
2856 | next->next = save_nextnext; | |
2857 | bid = expand_string(tp->batch_id); | |
2858 | deliver_set_expansions(NULL); | |
2ea97746 | 2859 | if (!bid) |
420a0d19 CE |
2860 | { |
2861 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2862 | "in %s transport (%s): %s", tp->name, next->address, | |
2863 | expand_string_message); | |
2864 | ok = FALSE; | |
2865 | } | |
2866 | else ok = (Ustrcmp(batch_id, bid) == 0); | |
2867 | } | |
2868 | ||
2869 | /* Take address into batch if OK. */ | |
2870 | ||
2871 | if (ok) | |
2872 | { | |
2873 | *anchor = next->next; /* Include the address */ | |
2874 | next->next = NULL; | |
2875 | last->next = next; | |
2876 | last = next; | |
2877 | batch_count++; | |
2878 | } | |
2ea97746 | 2879 | else anchor = &next->next; /* Skip the address */ |
420a0d19 CE |
2880 | } |
2881 | } | |
2882 | ||
2883 | /* We now have one or more addresses that can be delivered in a batch. Check | |
2884 | whether the transport is prepared to accept a message of this size. If not, | |
2885 | fail them all forthwith. If the expansion fails, or does not yield an | |
2886 | integer, defer delivery. */ | |
2887 | ||
2ea97746 | 2888 | if (tp->message_size_limit) |
420a0d19 CE |
2889 | { |
2890 | int rc = check_message_size(tp, addr); | |
2891 | if (rc != OK) | |
2892 | { | |
2893 | replicate_status(addr); | |
2ea97746 | 2894 | while (addr) |
420a0d19 CE |
2895 | { |
2896 | addr2 = addr->next; | |
2ea97746 | 2897 | post_process_one(addr, rc, logflags, EXIM_DTYPE_TRANSPORT, 0); |
420a0d19 CE |
2898 | addr = addr2; |
2899 | } | |
2900 | continue; /* With next batch of addresses */ | |
2901 | } | |
2902 | } | |
2903 | ||
2904 | /* If we are not running the queue, or if forcing, all deliveries will be | |
2905 | attempted. Otherwise, we must respect the retry times for each address. Even | |
2906 | when not doing this, we need to set up the retry key string, and determine | |
2907 | whether a retry record exists, because after a successful delivery, a delete | |
2908 | retry item must be set up. Keep the retry database open only for the duration | |
2909 | of these checks, rather than for all local deliveries, because some local | |
2910 | deliveries (e.g. to pipes) can take a substantial time. */ | |
2911 | ||
2ea97746 | 2912 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
420a0d19 CE |
2913 | { |
2914 | DEBUG(D_deliver|D_retry|D_hints_lookup) | |
2915 | debug_printf("no retry data available\n"); | |
2916 | } | |
2917 | ||
2918 | addr2 = addr; | |
2919 | addr3 = NULL; | |
2ea97746 | 2920 | while (addr2) |
420a0d19 CE |
2921 | { |
2922 | BOOL ok = TRUE; /* to deliver this address */ | |
2923 | uschar *retry_key; | |
2924 | ||
2925 | /* Set up the retry key to include the domain or not, and change its | |
2926 | leading character from "R" to "T". Must make a copy before doing this, | |
2927 | because the old key may be pointed to from a "delete" retry item after | |
2928 | a routing delay. */ | |
2929 | ||
2930 | retry_key = string_copy( | |
2ea97746 | 2931 | tp->retry_use_local_part ? addr2->address_retry_key : |
420a0d19 CE |
2932 | addr2->domain_retry_key); |
2933 | *retry_key = 'T'; | |
2934 | ||
2935 | /* Inspect the retry data. If there is no hints file, delivery happens. */ | |
2936 | ||
2ea97746 | 2937 | if (dbm_file) |
420a0d19 CE |
2938 | { |
2939 | dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key); | |
2940 | ||
2941 | /* If there is no retry record, delivery happens. If there is, | |
2942 | remember it exists so it can be deleted after a successful delivery. */ | |
2943 | ||
2ea97746 | 2944 | if (retry_record) |
420a0d19 CE |
2945 | { |
2946 | setflag(addr2, af_lt_retry_exists); | |
2947 | ||
2948 | /* A retry record exists for this address. If queue running and not | |
2949 | forcing, inspect its contents. If the record is too old, or if its | |
2950 | retry time has come, or if it has passed its cutoff time, delivery | |
2951 | will go ahead. */ | |
2952 | ||
2953 | DEBUG(D_retry) | |
2954 | { | |
2955 | debug_printf("retry record exists: age=%s ", | |
2956 | readconf_printtime(now - retry_record->time_stamp)); | |
2957 | debug_printf("(max %s)\n", readconf_printtime(retry_data_expire)); | |
2958 | debug_printf(" time to retry = %s expired = %d\n", | |
2959 | readconf_printtime(retry_record->next_try - now), | |
2960 | retry_record->expired); | |
2961 | } | |
2962 | ||
2ea97746 | 2963 | if (f.queue_running && !f.deliver_force) |
420a0d19 | 2964 | { |
2ea97746 CE |
2965 | ok = (now - retry_record->time_stamp > retry_data_expire) |
2966 | || (now >= retry_record->next_try) | |
2967 | || retry_record->expired; | |
420a0d19 CE |
2968 | |
2969 | /* If we haven't reached the retry time, there is one more check | |
2970 | to do, which is for the ultimate address timeout. */ | |
2971 | ||
2972 | if (!ok) | |
2973 | ok = retry_ultimate_address_timeout(retry_key, addr2->domain, | |
2974 | retry_record, now); | |
2975 | } | |
2976 | } | |
2977 | else DEBUG(D_retry) debug_printf("no retry record exists\n"); | |
2978 | } | |
2979 | ||
2980 | /* This address is to be delivered. Leave it on the chain. */ | |
2981 | ||
2982 | if (ok) | |
2983 | { | |
2984 | addr3 = addr2; | |
2985 | addr2 = addr2->next; | |
2986 | } | |
2987 | ||
2988 | /* This address is to be deferred. Take it out of the chain, and | |
2989 | post-process it as complete. Must take it out of the chain first, | |
2990 | because post processing puts it on another chain. */ | |
2991 | ||
2992 | else | |
2993 | { | |
2994 | address_item *this = addr2; | |
2995 | this->message = US"Retry time not yet reached"; | |
2996 | this->basic_errno = ERRNO_LRETRY; | |
2ea97746 CE |
2997 | addr2 = addr3 ? (addr3->next = addr2->next) |
2998 | : (addr = addr2->next); | |
2999 | post_process_one(this, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); | |
420a0d19 CE |
3000 | } |
3001 | } | |
3002 | ||
2ea97746 | 3003 | if (dbm_file) dbfn_close(dbm_file); |
420a0d19 CE |
3004 | |
3005 | /* If there are no addresses left on the chain, they all deferred. Loop | |
3006 | for the next set of addresses. */ | |
3007 | ||
2ea97746 CE |
3008 | if (!addr) continue; |
3009 | ||
3010 | /* If the transport is limited for parallellism, enforce that here. | |
3011 | We use a hints DB entry, incremented here and decremented after | |
3012 | the transport (and any shadow transport) completes. */ | |
3013 | ||
3014 | if (tpt_parallel_check(tp, addr, &serialize_key)) | |
3015 | { | |
3016 | if (expand_string_message) | |
3017 | { | |
3018 | logflags |= LOG_PANIC; | |
3019 | do | |
3020 | { | |
3021 | addr = addr->next; | |
3022 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); | |
3023 | } while ((addr = addr2)); | |
3024 | } | |
3025 | continue; /* Loop for the next set of addresses. */ | |
3026 | } | |
3027 | ||
420a0d19 CE |
3028 | |
3029 | /* So, finally, we do have some addresses that can be passed to the | |
3030 | transport. Before doing so, set up variables that are relevant to a | |
3031 | single delivery. */ | |
3032 | ||
3033 | deliver_set_expansions(addr); | |
2ea97746 CE |
3034 | |
3035 | gettimeofday(&delivery_start, NULL); | |
420a0d19 | 3036 | deliver_local(addr, FALSE); |
2ea97746 | 3037 | timesince(&deliver_time, &delivery_start); |
420a0d19 CE |
3038 | |
3039 | /* If a shadow transport (which must perforce be another local transport), is | |
3040 | defined, and its condition is met, we must pass the message to the shadow | |
3041 | too, but only those addresses that succeeded. We do this by making a new | |
3042 | chain of addresses - also to keep the original chain uncontaminated. We must | |
3043 | use a chain rather than doing it one by one, because the shadow transport may | |
3044 | batch. | |
3045 | ||
3046 | NOTE: if the condition fails because of a lookup defer, there is nothing we | |
3047 | can do! */ | |
3048 | ||
2ea97746 CE |
3049 | if ( tp->shadow |
3050 | && ( !tp->shadow_condition | |
3051 | || expand_check_condition(tp->shadow_condition, tp->name, US"transport") | |
3052 | ) ) | |
420a0d19 CE |
3053 | { |
3054 | transport_instance *stp; | |
3055 | address_item *shadow_addr = NULL; | |
3056 | address_item **last = &shadow_addr; | |
3057 | ||
2ea97746 | 3058 | for (stp = transports; stp; stp = stp->next) |
420a0d19 CE |
3059 | if (Ustrcmp(stp->name, tp->shadow) == 0) break; |
3060 | ||
2ea97746 | 3061 | if (!stp) |
420a0d19 CE |
3062 | log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ", |
3063 | tp->shadow); | |
3064 | ||
3065 | /* Pick off the addresses that have succeeded, and make clones. Put into | |
3066 | the shadow_message field a pointer to the shadow_message field of the real | |
3067 | address. */ | |
3068 | ||
2ea97746 CE |
3069 | else for (addr2 = addr; addr2; addr2 = addr2->next) |
3070 | if (addr2->transport_return == OK) | |
3071 | { | |
3072 | addr3 = store_get(sizeof(address_item)); | |
3073 | *addr3 = *addr2; | |
3074 | addr3->next = NULL; | |
3075 | addr3->shadow_message = US &addr2->shadow_message; | |
3076 | addr3->transport = stp; | |
3077 | addr3->transport_return = DEFER; | |
3078 | addr3->return_filename = NULL; | |
3079 | addr3->return_file = -1; | |
3080 | *last = addr3; | |
3081 | last = &addr3->next; | |
3082 | } | |
420a0d19 CE |
3083 | |
3084 | /* If we found any addresses to shadow, run the delivery, and stick any | |
3085 | message back into the shadow_message field in the original. */ | |
3086 | ||
2ea97746 | 3087 | if (shadow_addr) |
420a0d19 CE |
3088 | { |
3089 | int save_count = transport_count; | |
3090 | ||
3091 | DEBUG(D_deliver|D_transport) | |
3092 | debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3093 | deliver_local(shadow_addr, TRUE); | |
3094 | ||
2ea97746 | 3095 | for(; shadow_addr; shadow_addr = shadow_addr->next) |
420a0d19 CE |
3096 | { |
3097 | int sresult = shadow_addr->transport_return; | |
2ea97746 CE |
3098 | *(uschar **)shadow_addr->shadow_message = |
3099 | sresult == OK | |
3100 | ? string_sprintf(" ST=%s", stp->name) | |
3101 | : string_sprintf(" ST=%s (%s%s%s)", stp->name, | |
3102 | shadow_addr->basic_errno <= 0 | |
3103 | ? US"" | |
3104 | : US strerror(shadow_addr->basic_errno), | |
3105 | shadow_addr->basic_errno <= 0 || !shadow_addr->message | |
3106 | ? US"" | |
3107 | : US": ", | |
3108 | shadow_addr->message | |
3109 | ? shadow_addr->message | |
3110 | : shadow_addr->basic_errno <= 0 | |
3111 | ? US"unknown error" | |
3112 | : US""); | |
420a0d19 CE |
3113 | |
3114 | DEBUG(D_deliver|D_transport) | |
3115 | debug_printf("%s shadow transport returned %s for %s\n", | |
3116 | stp->name, | |
2ea97746 CE |
3117 | sresult == OK ? "OK" : |
3118 | sresult == DEFER ? "DEFER" : | |
3119 | sresult == FAIL ? "FAIL" : | |
3120 | sresult == PANIC ? "PANIC" : "?", | |
420a0d19 CE |
3121 | shadow_addr->address); |
3122 | } | |
3123 | ||
3124 | DEBUG(D_deliver|D_transport) | |
3125 | debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3126 | ||
3127 | transport_count = save_count; /* Restore original transport count */ | |
3128 | } | |
3129 | } | |
3130 | ||
3131 | /* Cancel the expansions that were set up for the delivery. */ | |
3132 | ||
3133 | deliver_set_expansions(NULL); | |
3134 | ||
2ea97746 CE |
3135 | /* If the transport was parallelism-limited, decrement the hints DB record. */ |
3136 | ||
3137 | if (serialize_key) enq_end(serialize_key); | |
3138 | ||
420a0d19 CE |
3139 | /* Now we can process the results of the real transport. We must take each |
3140 | address off the chain first, because post_process_one() puts it on another | |
3141 | chain. */ | |
3142 | ||
2ea97746 | 3143 | for (addr2 = addr; addr2; addr2 = nextaddr) |
420a0d19 CE |
3144 | { |
3145 | int result = addr2->transport_return; | |
3146 | nextaddr = addr2->next; | |
3147 | ||
3148 | DEBUG(D_deliver|D_transport) | |
3149 | debug_printf("%s transport returned %s for %s\n", | |
3150 | tp->name, | |
2ea97746 CE |
3151 | result == OK ? "OK" : |
3152 | result == DEFER ? "DEFER" : | |
3153 | result == FAIL ? "FAIL" : | |
3154 | result == PANIC ? "PANIC" : "?", | |
420a0d19 CE |
3155 | addr2->address); |
3156 | ||
3157 | /* If there is a retry_record, or if delivery is deferred, build a retry | |
3158 | item for setting a new retry time or deleting the old retry record from | |
3159 | the database. These items are handled all together after all addresses | |
3160 | have been handled (so the database is open just for a short time for | |
3161 | updating). */ | |
3162 | ||
3163 | if (result == DEFER || testflag(addr2, af_lt_retry_exists)) | |
3164 | { | |
2ea97746 CE |
3165 | int flags = result == DEFER ? 0 : rf_delete; |
3166 | uschar *retry_key = string_copy(tp->retry_use_local_part | |
3167 | ? addr2->address_retry_key : addr2->domain_retry_key); | |
420a0d19 CE |
3168 | *retry_key = 'T'; |
3169 | retry_add_item(addr2, retry_key, flags); | |
3170 | } | |
3171 | ||
3172 | /* Done with this address */ | |
3173 | ||
2ea97746 CE |
3174 | if (result == OK) |
3175 | { | |
3176 | addr2->more_errno = deliver_time.tv_sec; | |
3177 | addr2->delivery_usec = deliver_time.tv_usec; | |
3178 | } | |
3179 | post_process_one(addr2, result, logflags, EXIM_DTYPE_TRANSPORT, logchar); | |
420a0d19 CE |
3180 | |
3181 | /* If a pipe delivery generated text to be sent back, the result may be | |
3182 | changed to FAIL, and we must copy this for subsequent addresses in the | |
3183 | batch. */ | |
3184 | ||
3185 | if (addr2->transport_return != result) | |
3186 | { | |
2ea97746 | 3187 | for (addr3 = nextaddr; addr3; addr3 = addr3->next) |
420a0d19 CE |
3188 | { |
3189 | addr3->transport_return = addr2->transport_return; | |
3190 | addr3->basic_errno = addr2->basic_errno; | |
3191 | addr3->message = addr2->message; | |
3192 | } | |
3193 | result = addr2->transport_return; | |
3194 | } | |
3195 | ||
3196 | /* Whether or not the result was changed to FAIL, we need to copy the | |
3197 | return_file value from the first address into all the addresses of the | |
3198 | batch, so they are all listed in the error message. */ | |
3199 | ||
3200 | addr2->return_file = addr->return_file; | |
3201 | ||
3202 | /* Change log character for recording successful deliveries. */ | |
3203 | ||
3204 | if (result == OK) logchar = '-'; | |
3205 | } | |
3206 | } /* Loop back for next batch of addresses */ | |
3207 | } | |
3208 | ||
3209 | ||
3210 | ||
3211 | ||
3212 | /************************************************* | |
3213 | * Sort remote deliveries * | |
3214 | *************************************************/ | |
3215 | ||
3216 | /* This function is called if remote_sort_domains is set. It arranges that the | |
3217 | chain of addresses for remote deliveries is ordered according to the strings | |
3218 | specified. Try to make this shuffling reasonably efficient by handling | |
3219 | sequences of addresses rather than just single ones. | |
3220 | ||
3221 | Arguments: None | |
3222 | Returns: Nothing | |
3223 | */ | |
3224 | ||
3225 | static void | |
3226 | sort_remote_deliveries(void) | |
3227 | { | |
3228 | int sep = 0; | |
3229 | address_item **aptr = &addr_remote; | |
2ea97746 | 3230 | const uschar *listptr = remote_sort_domains; |
420a0d19 CE |
3231 | uschar *pattern; |
3232 | uschar patbuf[256]; | |
3233 | ||
2ea97746 CE |
3234 | while ( *aptr |
3235 | && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf))) | |
3236 | ) | |
420a0d19 CE |
3237 | { |
3238 | address_item *moved = NULL; | |
3239 | address_item **bptr = &moved; | |
3240 | ||
2ea97746 | 3241 | while (*aptr) |
420a0d19 CE |
3242 | { |
3243 | address_item **next; | |
3244 | deliver_domain = (*aptr)->domain; /* set $domain */ | |
2ea97746 | 3245 | if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
420a0d19 CE |
3246 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK) |
3247 | { | |
2ea97746 | 3248 | aptr = &(*aptr)->next; |
420a0d19 CE |
3249 | continue; |
3250 | } | |
3251 | ||
2ea97746 CE |
3252 | next = &(*aptr)->next; |
3253 | while ( *next | |
3254 | && (deliver_domain = (*next)->domain, /* Set $domain */ | |
3255 | match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, | |
3256 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK | |
3257 | ) | |
3258 | next = &(*next)->next; | |
420a0d19 CE |
3259 | |
3260 | /* If the batch of non-matchers is at the end, add on any that were | |
3261 | extracted further up the chain, and end this iteration. Otherwise, | |
3262 | extract them from the chain and hang on the moved chain. */ | |
3263 | ||
2ea97746 | 3264 | if (!*next) |
420a0d19 CE |
3265 | { |
3266 | *next = moved; | |
3267 | break; | |
3268 | } | |
3269 | ||
3270 | *bptr = *aptr; | |
3271 | *aptr = *next; | |
3272 | *next = NULL; | |
3273 | bptr = next; | |
2ea97746 | 3274 | aptr = &(*aptr)->next; |
420a0d19 CE |
3275 | } |
3276 | ||
3277 | /* If the loop ended because the final address matched, *aptr will | |
3278 | be NULL. Add on to the end any extracted non-matching addresses. If | |
3279 | *aptr is not NULL, the loop ended via "break" when *next is null, that | |
3280 | is, there was a string of non-matching addresses at the end. In this | |
3281 | case the extracted addresses have already been added on the end. */ | |
3282 | ||
2ea97746 | 3283 | if (!*aptr) *aptr = moved; |
420a0d19 CE |
3284 | } |
3285 | ||
3286 | DEBUG(D_deliver) | |
3287 | { | |
3288 | address_item *addr; | |
3289 | debug_printf("remote addresses after sorting:\n"); | |
2ea97746 | 3290 | for (addr = addr_remote; addr; addr = addr->next) |
420a0d19 CE |
3291 | debug_printf(" %s\n", addr->address); |
3292 | } | |
3293 | } | |
3294 | ||
3295 | ||
3296 | ||
3297 | /************************************************* | |
3298 | * Read from pipe for remote delivery subprocess * | |
3299 | *************************************************/ | |
3300 | ||
3301 | /* This function is called when the subprocess is complete, but can also be | |
3302 | called before it is complete, in order to empty a pipe that is full (to prevent | |
3303 | deadlock). It must therefore keep track of its progress in the parlist data | |
3304 | block. | |
3305 | ||
3306 | We read the pipe to get the delivery status codes and a possible error message | |
3307 | for each address, optionally preceded by unusability data for the hosts and | |
3308 | also by optional retry data. | |
3309 | ||
3310 | Read in large chunks into the big buffer and then scan through, interpreting | |
3311 | the data therein. In most cases, only a single read will be necessary. No | |
3312 | individual item will ever be anywhere near 2500 bytes in length, so by ensuring | |
3313 | that we read the next chunk when there is less than 2500 bytes left in the | |
3314 | non-final chunk, we can assume each item is complete in the buffer before | |
3315 | handling it. Each item is written using a single write(), which is atomic for | |
3316 | small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and | |
3317 | often bigger) so even if we are reading while the subprocess is still going, we | |
3318 | should never have only a partial item in the buffer. | |
3319 | ||
2ea97746 CE |
3320 | hs12: This assumption is not true anymore, since we get quite large items (certificate |
3321 | information and such). | |
3322 | ||
420a0d19 CE |
3323 | Argument: |
3324 | poffset the offset of the parlist item | |
3325 | eop TRUE if the process has completed | |
3326 | ||
3327 | Returns: TRUE if the terminating 'Z' item has been read, | |
3328 | or there has been a disaster (i.e. no more data needed); | |
3329 | FALSE otherwise | |
3330 | */ | |
3331 | ||
3332 | static BOOL | |
3333 | par_read_pipe(int poffset, BOOL eop) | |
3334 | { | |
3335 | host_item *h; | |
3336 | pardata *p = parlist + poffset; | |
3337 | address_item *addrlist = p->addrlist; | |
3338 | address_item *addr = p->addr; | |
3339 | pid_t pid = p->pid; | |
3340 | int fd = p->fd; | |
2ea97746 | 3341 | |
420a0d19 CE |
3342 | uschar *msg = p->msg; |
3343 | BOOL done = p->done; | |
420a0d19 CE |
3344 | |
3345 | /* Loop through all items, reading from the pipe when necessary. The pipe | |
2ea97746 CE |
3346 | used to be non-blocking. But I do not see a reason for using non-blocking I/O |
3347 | here, as the preceding select() tells us, if data is available for reading. | |
420a0d19 | 3348 | |
2ea97746 CE |
3349 | A read() on a "selected" handle should never block, but(!) it may return |
3350 | less data then we expected. (The buffer size we pass to read() shouldn't be | |
3351 | understood as a "request", but as a "limit".) | |
420a0d19 | 3352 | |
2ea97746 CE |
3353 | Each separate item is written to the pipe in a timely manner. But, especially for |
3354 | larger items, the read(2) may already return partial data from the write(2). | |
420a0d19 | 3355 | |
2ea97746 CE |
3356 | The write is atomic mostly (depending on the amount written), but atomic does |
3357 | not imply "all or noting", it just is "not intermixed" with other writes on the | |
3358 | same channel (pipe). | |
420a0d19 | 3359 | |
2ea97746 | 3360 | */ |
420a0d19 | 3361 | |
2ea97746 CE |
3362 | DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n", |
3363 | (int)p->pid, eop? "ended" : "not ended yet"); | |
420a0d19 | 3364 | |
2ea97746 CE |
3365 | while (!done) |
3366 | { | |
3367 | retry_item *r, **rp; | |
3368 | uschar pipeheader[PIPE_HEADER_SIZE+1]; | |
3369 | uschar *id = &pipeheader[0]; | |
3370 | uschar *subid = &pipeheader[1]; | |
3371 | uschar *ptr = big_buffer; | |
3372 | size_t required = PIPE_HEADER_SIZE; /* first the pipehaeder, later the data */ | |
3373 | ssize_t got; | |
3374 | ||
3375 | DEBUG(D_deliver) debug_printf( | |
3376 | "expect %lu bytes (pipeheader) from tpt process %d\n", (u_long)required, pid); | |
3377 | ||
3378 | /* We require(!) all the PIPE_HEADER_SIZE bytes here, as we know, | |
3379 | they're written in a timely manner, so waiting for the write shouldn't hurt a lot. | |
3380 | If we get less, we can assume the subprocess do be done and do not expect any further | |
3381 | information from it. */ | |
3382 | ||
3383 | if ((got = readn(fd, pipeheader, required)) != required) | |
3384 | { | |
3385 | msg = string_sprintf("got " SSIZE_T_FMT " of %d bytes (pipeheader) " | |
3386 | "from transport process %d for transport %s", | |
3387 | got, PIPE_HEADER_SIZE, pid, addr->transport->driver_name); | |
3388 | done = TRUE; | |
3389 | break; | |
3390 | } | |
420a0d19 | 3391 | |
2ea97746 CE |
3392 | pipeheader[PIPE_HEADER_SIZE] = '\0'; |
3393 | DEBUG(D_deliver) | |
3394 | debug_printf("got %ld bytes (pipeheader) from transport process %d\n", | |
3395 | (long) got, pid); | |
420a0d19 | 3396 | |
2ea97746 CE |
3397 | { |
3398 | /* If we can't decode the pipeheader, the subprocess seems to have a | |
3399 | problem, we do not expect any furher information from it. */ | |
3400 | char *endc; | |
3401 | required = Ustrtol(pipeheader+2, &endc, 10); | |
3402 | if (*endc) | |
3403 | { | |
3404 | msg = string_sprintf("failed to read pipe " | |
3405 | "from transport process %d for transport %s: error decoding size from header", | |
3406 | pid, addr->transport->driver_name); | |
3407 | done = TRUE; | |
3408 | break; | |
420a0d19 | 3409 | } |
2ea97746 | 3410 | } |
420a0d19 | 3411 | |
2ea97746 CE |
3412 | DEBUG(D_deliver) |
3413 | debug_printf("expect %lu bytes (pipedata) from transport process %d\n", | |
3414 | (u_long)required, pid); | |
420a0d19 | 3415 | |
2ea97746 CE |
3416 | /* Same as above, the transport process will write the bytes announced |
3417 | in a timely manner, so we can just wait for the bytes, getting less than expected | |
3418 | is considered a problem of the subprocess, we do not expect anything else from it. */ | |
3419 | if ((got = readn(fd, big_buffer, required)) != required) | |
3420 | { | |
3421 | msg = string_sprintf("got only " SSIZE_T_FMT " of " SIZE_T_FMT | |
3422 | " bytes (pipedata) from transport process %d for transport %s", | |
3423 | got, required, pid, addr->transport->driver_name); | |
3424 | done = TRUE; | |
3425 | break; | |
3426 | } | |
420a0d19 CE |
3427 | |
3428 | /* Handle each possible type of item, assuming the complete item is | |
3429 | available in store. */ | |
3430 | ||
2ea97746 | 3431 | switch (*id) |
420a0d19 CE |
3432 | { |
3433 | /* Host items exist only if any hosts were marked unusable. Match | |
3434 | up by checking the IP address. */ | |
3435 | ||
3436 | case 'H': | |
2ea97746 CE |
3437 | for (h = addrlist->host_list; h; h = h->next) |
3438 | { | |
3439 | if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue; | |
3440 | h->status = ptr[0]; | |
3441 | h->why = ptr[1]; | |
3442 | } | |
3443 | ptr += 2; | |
3444 | while (*ptr++); | |
3445 | break; | |
420a0d19 CE |
3446 | |
3447 | /* Retry items are sent in a preceding R item for each address. This is | |
3448 | kept separate to keep each message short enough to guarantee it won't | |
3449 | be split in the pipe. Hopefully, in the majority of cases, there won't in | |
3450 | fact be any retry items at all. | |
3451 | ||
3452 | The complete set of retry items might include an item to delete a | |
3453 | routing retry if there was a previous routing delay. However, routing | |
3454 | retries are also used when a remote transport identifies an address error. | |
3455 | In that case, there may also be an "add" item for the same key. Arrange | |
3456 | that a "delete" item is dropped in favour of an "add" item. */ | |
3457 | ||
3458 | case 'R': | |
2ea97746 | 3459 | if (!addr) goto ADDR_MISMATCH; |
420a0d19 | 3460 | |
2ea97746 CE |
3461 | DEBUG(D_deliver|D_retry) |
3462 | debug_printf("reading retry information for %s from subprocess\n", | |
3463 | ptr+1); | |
420a0d19 | 3464 | |
2ea97746 | 3465 | /* Cut out any "delete" items on the list. */ |
420a0d19 | 3466 | |
2ea97746 CE |
3467 | for (rp = &addr->retries; (r = *rp); rp = &r->next) |
3468 | if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */ | |
3469 | { | |
3470 | if (!(r->flags & rf_delete)) break; /* It was not "delete" */ | |
3471 | *rp = r->next; /* Excise a delete item */ | |
3472 | DEBUG(D_deliver|D_retry) | |
3473 | debug_printf(" existing delete item dropped\n"); | |
3474 | } | |
420a0d19 | 3475 | |
2ea97746 CE |
3476 | /* We want to add a delete item only if there is no non-delete item; |
3477 | however we still have to step ptr through the data. */ | |
420a0d19 | 3478 | |
2ea97746 CE |
3479 | if (!r || !(*ptr & rf_delete)) |
3480 | { | |
3481 | r = store_get(sizeof(retry_item)); | |
3482 | r->next = addr->retries; | |
3483 | addr->retries = r; | |
3484 | r->flags = *ptr++; | |
3485 | r->key = string_copy(ptr); | |
3486 | while (*ptr++); | |
3487 | memcpy(&r->basic_errno, ptr, sizeof(r->basic_errno)); | |
3488 | ptr += sizeof(r->basic_errno); | |
3489 | memcpy(&r->more_errno, ptr, sizeof(r->more_errno)); | |
3490 | ptr += sizeof(r->more_errno); | |
3491 | r->message = *ptr ? string_copy(ptr) : NULL; | |
3492 | DEBUG(D_deliver|D_retry) debug_printf(" added %s item\n", | |
3493 | r->flags & rf_delete ? "delete" : "retry"); | |
3494 | } | |
420a0d19 | 3495 | |
2ea97746 CE |
3496 | else |
3497 | { | |
3498 | DEBUG(D_deliver|D_retry) | |
3499 | debug_printf(" delete item not added: non-delete item exists\n"); | |
3500 | ptr++; | |
3501 | while(*ptr++); | |
3502 | ptr += sizeof(r->basic_errno) + sizeof(r->more_errno); | |
3503 | } | |
420a0d19 | 3504 | |
2ea97746 CE |
3505 | while(*ptr++); |
3506 | break; | |
420a0d19 CE |
3507 | |
3508 | /* Put the amount of data written into the parlist block */ | |
3509 | ||
3510 | case 'S': | |
2ea97746 CE |
3511 | memcpy(&(p->transport_count), ptr, sizeof(transport_count)); |
3512 | ptr += sizeof(transport_count); | |
3513 | break; | |
420a0d19 CE |
3514 | |
3515 | /* Address items are in the order of items on the address chain. We | |
3516 | remember the current address value in case this function is called | |
3517 | several times to empty the pipe in stages. Information about delivery | |
3518 | over TLS is sent in a preceding X item for each address. We don't put | |
3519 | it in with the other info, in order to keep each message short enough to | |
3520 | guarantee it won't be split in the pipe. */ | |
3521 | ||
2ea97746 | 3522 | #ifdef SUPPORT_TLS |
420a0d19 | 3523 | case 'X': |
2ea97746 CE |
3524 | if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */ |
3525 | switch (*subid) | |
3526 | { | |
3527 | case '1': | |
3528 | addr->cipher = NULL; | |
3529 | addr->peerdn = NULL; | |
3530 | ||
3531 | if (*ptr) | |
3532 | addr->cipher = string_copy(ptr); | |
3533 | while (*ptr++); | |
3534 | if (*ptr) | |
3535 | addr->peerdn = string_copy(ptr); | |
3536 | break; | |
3537 | ||
3538 | case '2': | |
3539 | if (*ptr) | |
3540 | (void) tls_import_cert(ptr, &addr->peercert); | |
3541 | else | |
3542 | addr->peercert = NULL; | |
3543 | break; | |
3544 | ||
3545 | case '3': | |
3546 | if (*ptr) | |
3547 | (void) tls_import_cert(ptr, &addr->ourcert); | |
3548 | else | |
3549 | addr->ourcert = NULL; | |
3550 | break; | |
3551 | ||
3552 | # ifndef DISABLE_OCSP | |
3553 | case '4': | |
3554 | addr->ocsp = *ptr ? *ptr - '0' : OCSP_NOT_REQ; | |
3555 | break; | |
3556 | # endif | |
3557 | } | |
420a0d19 | 3558 | while (*ptr++); |
420a0d19 | 3559 | break; |
2ea97746 | 3560 | #endif /*SUPPORT_TLS*/ |
420a0d19 | 3561 | |
2ea97746 CE |
3562 | case 'C': /* client authenticator information */ |
3563 | switch (*subid) | |
3564 | { | |
3565 | case '1': addr->authenticator = *ptr ? string_copy(ptr) : NULL; break; | |
3566 | case '2': addr->auth_id = *ptr ? string_copy(ptr) : NULL; break; | |
3567 | case '3': addr->auth_sndr = *ptr ? string_copy(ptr) : NULL; break; | |
3568 | } | |
3569 | while (*ptr++); | |
420a0d19 CE |
3570 | break; |
3571 | ||
2ea97746 CE |
3572 | #ifndef DISABLE_PRDR |
3573 | case 'P': | |
3574 | setflag(addr, af_prdr_used); | |
420a0d19 | 3575 | break; |
2ea97746 | 3576 | #endif |
420a0d19 | 3577 | |
2ea97746 CE |
3578 | case 'L': |
3579 | switch (*subid) | |
3580 | { | |
3581 | #ifdef EXPERIMENTAL_PIPE_CONNECT | |
3582 | case 2: setflag(addr, af_early_pipe); /*FALLTHROUGH*/ | |
3583 | #endif | |
3584 | case 1: setflag(addr, af_pipelining); break; | |
3585 | } | |
420a0d19 | 3586 | break; |
420a0d19 | 3587 | |
2ea97746 CE |
3588 | case 'K': |
3589 | setflag(addr, af_chunking_used); | |
3590 | break; | |
420a0d19 | 3591 | |
2ea97746 CE |
3592 | case 'T': |
3593 | setflag(addr, af_tcp_fastopen_conn); | |
3594 | if (*subid > '0') setflag(addr, af_tcp_fastopen); | |
3595 | if (*subid > '1') setflag(addr, af_tcp_fastopen_data); | |
3596 | break; | |
420a0d19 | 3597 | |
420a0d19 | 3598 | case 'D': |
2ea97746 CE |
3599 | if (!addr) goto ADDR_MISMATCH; |
3600 | memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware)); | |
3601 | ptr += sizeof(addr->dsn_aware); | |
3602 | DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware); | |
3603 | break; | |
420a0d19 CE |
3604 | |
3605 | case 'A': | |
2ea97746 CE |
3606 | if (!addr) |
3607 | { | |
3608 | ADDR_MISMATCH: | |
3609 | msg = string_sprintf("address count mismatch for data read from pipe " | |
3610 | "for transport process %d for transport %s", pid, | |
3611 | addrlist->transport->driver_name); | |
3612 | done = TRUE; | |
3613 | break; | |
3614 | } | |
420a0d19 | 3615 | |
2ea97746 CE |
3616 | switch (*subid) |
3617 | { | |
3618 | #ifdef SUPPORT_SOCKS | |
3619 | case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/ | |
3620 | proxy_session = TRUE; /*XXX should this be cleared somewhere? */ | |
3621 | if (*ptr == 0) | |
3622 | ptr++; | |
3623 | else | |
3624 | { | |
3625 | proxy_local_address = string_copy(ptr); | |
3626 | while(*ptr++); | |
3627 | memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port)); | |
3628 | ptr += sizeof(proxy_local_port); | |
3629 | } | |
3630 | break; | |
3631 | #endif | |
3632 | ||
3633 | #ifdef EXPERIMENTAL_DSN_INFO | |
3634 | case '1': /* must arrive before A0, and applies to that addr */ | |
3635 | /* Two strings: smtp_greeting and helo_response */ | |
3636 | addr->smtp_greeting = string_copy(ptr); | |
3637 | while(*ptr++); | |
3638 | addr->helo_response = string_copy(ptr); | |
3639 | while(*ptr++); | |
3640 | break; | |
3641 | #endif | |
420a0d19 | 3642 | |
2ea97746 CE |
3643 | case '0': |
3644 | DEBUG(D_deliver) debug_printf("A0 %s tret %d\n", addr->address, *ptr); | |
3645 | addr->transport_return = *ptr++; | |
3646 | addr->special_action = *ptr++; | |
3647 | memcpy(&addr->basic_errno, ptr, sizeof(addr->basic_errno)); | |
3648 | ptr += sizeof(addr->basic_errno); | |
3649 | memcpy(&addr->more_errno, ptr, sizeof(addr->more_errno)); | |
3650 | ptr += sizeof(addr->more_errno); | |
3651 | memcpy(&addr->delivery_usec, ptr, sizeof(addr->delivery_usec)); | |
3652 | ptr += sizeof(addr->delivery_usec); | |
3653 | memcpy(&addr->flags, ptr, sizeof(addr->flags)); | |
3654 | ptr += sizeof(addr->flags); | |
3655 | addr->message = *ptr ? string_copy(ptr) : NULL; | |
3656 | while(*ptr++); | |
3657 | addr->user_message = *ptr ? string_copy(ptr) : NULL; | |
3658 | while(*ptr++); | |
420a0d19 | 3659 | |
2ea97746 CE |
3660 | /* Always two strings for host information, followed by the port number and DNSSEC mark */ |
3661 | ||
3662 | if (*ptr) | |
3663 | { | |
3664 | h = store_get(sizeof(host_item)); | |
3665 | h->name = string_copy(ptr); | |
3666 | while (*ptr++); | |
3667 | h->address = string_copy(ptr); | |
3668 | while(*ptr++); | |
3669 | memcpy(&h->port, ptr, sizeof(h->port)); | |
3670 | ptr += sizeof(h->port); | |
3671 | h->dnssec = *ptr == '2' ? DS_YES | |
3672 | : *ptr == '1' ? DS_NO | |
3673 | : DS_UNK; | |
3674 | ptr++; | |
3675 | addr->host_used = h; | |
3676 | } | |
3677 | else ptr++; | |
3678 | ||
3679 | /* Finished with this address */ | |
3680 | ||
3681 | addr = addr->next; | |
3682 | break; | |
3683 | } | |
3684 | break; | |
3685 | ||
3686 | /* Local interface address/port */ | |
3687 | case 'I': | |
3688 | if (*ptr) sending_ip_address = string_copy(ptr); | |
3689 | while (*ptr++) ; | |
3690 | if (*ptr) sending_port = atoi(CS ptr); | |
3691 | while (*ptr++) ; | |
3692 | break; | |
420a0d19 CE |
3693 | |
3694 | /* Z marks the logical end of the data. It is followed by '0' if | |
3695 | continue_transport was NULL at the end of transporting, otherwise '1'. | |
3696 | We need to know when it becomes NULL during a delivery down a passed SMTP | |
3697 | channel so that we don't try to pass anything more down it. Of course, for | |
3698 | most normal messages it will remain NULL all the time. */ | |
3699 | ||
3700 | case 'Z': | |
2ea97746 CE |
3701 | if (*ptr == '0') |
3702 | { | |
3703 | continue_transport = NULL; | |
3704 | continue_hostname = NULL; | |
3705 | } | |
3706 | done = TRUE; | |
3707 | DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr); | |
3708 | break; | |
420a0d19 CE |
3709 | |
3710 | /* Anything else is a disaster. */ | |
3711 | ||
3712 | default: | |
2ea97746 CE |
3713 | msg = string_sprintf("malformed data (%d) read from pipe for transport " |
3714 | "process %d for transport %s", ptr[-1], pid, | |
3715 | addr->transport->driver_name); | |
3716 | done = TRUE; | |
3717 | break; | |
420a0d19 CE |
3718 | } |
3719 | } | |
3720 | ||
3721 | /* The done flag is inspected externally, to determine whether or not to | |
3722 | call the function again when the process finishes. */ | |
3723 | ||
3724 | p->done = done; | |
3725 | ||
3726 | /* If the process hadn't finished, and we haven't seen the end of the data | |
2ea97746 | 3727 | or if we suffered a disaster, update the rest of the state, and return FALSE to |
420a0d19 CE |
3728 | indicate "not finished". */ |
3729 | ||
3730 | if (!eop && !done) | |
3731 | { | |
3732 | p->addr = addr; | |
3733 | p->msg = msg; | |
3734 | return FALSE; | |
3735 | } | |
3736 | ||
3737 | /* Close our end of the pipe, to prevent deadlock if the far end is still | |
3738 | pushing stuff into it. */ | |
3739 | ||
3740 | (void)close(fd); | |
3741 | p->fd = -1; | |
3742 | ||
3743 | /* If we have finished without error, but haven't had data for every address, | |
3744 | something is wrong. */ | |
3745 | ||
2ea97746 | 3746 | if (!msg && addr) |
420a0d19 CE |
3747 | msg = string_sprintf("insufficient address data read from pipe " |
3748 | "for transport process %d for transport %s", pid, | |
3749 | addr->transport->driver_name); | |
3750 | ||
3751 | /* If an error message is set, something has gone wrong in getting back | |
3752 | the delivery data. Put the message into each address and freeze it. */ | |
3753 | ||
2ea97746 CE |
3754 | if (msg) |
3755 | for (addr = addrlist; addr; addr = addr->next) | |
420a0d19 CE |
3756 | { |
3757 | addr->transport_return = DEFER; | |
3758 | addr->special_action = SPECIAL_FREEZE; | |
3759 | addr->message = msg; | |
2ea97746 | 3760 | log_write(0, LOG_MAIN|LOG_PANIC, "Delivery status for %s: %s\n", addr->address, addr->message); |
420a0d19 | 3761 | } |
420a0d19 CE |
3762 | |
3763 | /* Return TRUE to indicate we have got all we need from this process, even | |
3764 | if it hasn't actually finished yet. */ | |
3765 | ||
3766 | return TRUE; | |
3767 | } | |
3768 | ||
3769 | ||
3770 | ||
3771 | /************************************************* | |
3772 | * Post-process a set of remote addresses * | |
3773 | *************************************************/ | |
3774 | ||
3775 | /* Do what has to be done immediately after a remote delivery for each set of | |
3776 | addresses, then re-write the spool if necessary. Note that post_process_one | |
3777 | puts the address on an appropriate queue; hence we must fish off the next | |
3778 | one first. This function is also called if there is a problem with setting | |
3779 | up a subprocess to do a remote delivery in parallel. In this case, the final | |
3780 | argument contains a message, and the action must be forced to DEFER. | |
3781 | ||
3782 | Argument: | |
3783 | addr pointer to chain of address items | |
3784 | logflags flags for logging | |
3785 | msg NULL for normal cases; -> error message for unexpected problems | |
3786 | fallback TRUE if processing fallback hosts | |
3787 | ||
3788 | Returns: nothing | |
3789 | */ | |
3790 | ||
3791 | static void | |
3792 | remote_post_process(address_item *addr, int logflags, uschar *msg, | |
3793 | BOOL fallback) | |
3794 | { | |
3795 | host_item *h; | |
3796 | ||
3797 | /* If any host addresses were found to be unusable, add them to the unusable | |
3798 | tree so that subsequent deliveries don't try them. */ | |
3799 | ||
2ea97746 CE |
3800 | for (h = addr->host_list; h; h = h->next) |
3801 | if (h->address) | |
3802 | if (h->status >= hstatus_unusable) tree_add_unusable(h); | |
420a0d19 CE |
3803 | |
3804 | /* Now handle each address on the chain. The transport has placed '=' or '-' | |
3805 | into the special_action field for each successful delivery. */ | |
3806 | ||
2ea97746 | 3807 | while (addr) |
420a0d19 CE |
3808 | { |
3809 | address_item *next = addr->next; | |
3810 | ||
3811 | /* If msg == NULL (normal processing) and the result is DEFER and we are | |
3812 | processing the main hosts and there are fallback hosts available, put the | |
3813 | address on the list for fallback delivery. */ | |
3814 | ||
2ea97746 CE |
3815 | if ( addr->transport_return == DEFER |
3816 | && addr->fallback_hosts | |
3817 | && !fallback | |
3818 | && !msg | |
3819 | ) | |
420a0d19 CE |
3820 | { |
3821 | addr->host_list = addr->fallback_hosts; | |
3822 | addr->next = addr_fallback; | |
3823 | addr_fallback = addr; | |
3824 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address); | |
3825 | } | |
3826 | ||
3827 | /* If msg is set (=> unexpected problem), set it in the address before | |
3828 | doing the ordinary post processing. */ | |
3829 | ||
3830 | else | |
3831 | { | |
2ea97746 | 3832 | if (msg) |
420a0d19 CE |
3833 | { |
3834 | addr->message = msg; | |
3835 | addr->transport_return = DEFER; | |
3836 | } | |
3837 | (void)post_process_one(addr, addr->transport_return, logflags, | |
2ea97746 | 3838 | EXIM_DTYPE_TRANSPORT, addr->special_action); |
420a0d19 CE |
3839 | } |
3840 | ||
3841 | /* Next address */ | |
3842 | ||
3843 | addr = next; | |
3844 | } | |
3845 | ||
3846 | /* If we have just delivered down a passed SMTP channel, and that was | |
3847 | the last address, the channel will have been closed down. Now that | |
3848 | we have logged that delivery, set continue_sequence to 1 so that | |
3849 | any subsequent deliveries don't get "*" incorrectly logged. */ | |
3850 | ||
2ea97746 | 3851 | if (!continue_transport) continue_sequence = 1; |
420a0d19 CE |
3852 | } |
3853 | ||
3854 | ||
3855 | ||
3856 | /************************************************* | |
3857 | * Wait for one remote delivery subprocess * | |
3858 | *************************************************/ | |
3859 | ||
3860 | /* This function is called while doing remote deliveries when either the | |
3861 | maximum number of processes exist and we need one to complete so that another | |
3862 | can be created, or when waiting for the last ones to complete. It must wait for | |
3863 | the completion of one subprocess, empty the control block slot, and return a | |
3864 | pointer to the address chain. | |
3865 | ||
3866 | Arguments: none | |
3867 | Returns: pointer to the chain of addresses handled by the process; | |
3868 | NULL if no subprocess found - this is an unexpected error | |
3869 | */ | |
3870 | ||
3871 | static address_item * | |
3872 | par_wait(void) | |
3873 | { | |
3874 | int poffset, status; | |
3875 | address_item *addr, *addrlist; | |
3876 | pid_t pid; | |
3877 | ||
3878 | set_process_info("delivering %s: waiting for a remote delivery subprocess " | |
3879 | "to finish", message_id); | |
3880 | ||
3881 | /* Loop until either a subprocess completes, or there are no subprocesses in | |
3882 | existence - in which case give an error return. We cannot proceed just by | |
3883 | waiting for a completion, because a subprocess may have filled up its pipe, and | |
3884 | be waiting for it to be emptied. Therefore, if no processes have finished, we | |
3885 | wait for one of the pipes to acquire some data by calling select(), with a | |
3886 | timeout just in case. | |
3887 | ||
3888 | The simple approach is just to iterate after reading data from a ready pipe. | |
3889 | This leads to non-ideal behaviour when the subprocess has written its final Z | |
3890 | item, closed the pipe, and is in the process of exiting (the common case). A | |
3891 | call to waitpid() yields nothing completed, but select() shows the pipe ready - | |
3892 | reading it yields EOF, so you end up with busy-waiting until the subprocess has | |
3893 | actually finished. | |
3894 | ||
3895 | To avoid this, if all the data that is needed has been read from a subprocess | |
3896 | after select(), an explicit wait() for it is done. We know that all it is doing | |
3897 | is writing to the pipe and then exiting, so the wait should not be long. | |
3898 | ||
3899 | The non-blocking waitpid() is to some extent just insurance; if we could | |
3900 | reliably detect end-of-file on the pipe, we could always know when to do a | |
3901 | blocking wait() for a completed process. However, because some systems use | |
3902 | NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to | |
3903 | use code that functions without the need to recognize EOF. | |
3904 | ||
3905 | There's a double loop here just in case we end up with a process that is not in | |
3906 | the list of remote delivery processes. Something has obviously gone wrong if | |
3907 | this is the case. (For example, a process that is incorrectly left over from | |
3908 | routing or local deliveries might be found.) The damage can be minimized by | |
3909 | looping back and looking for another process. If there aren't any, the error | |
3910 | return will happen. */ | |
3911 | ||
3912 | for (;;) /* Normally we do not repeat this loop */ | |
3913 | { | |
3914 | while ((pid = waitpid(-1, &status, WNOHANG)) <= 0) | |
3915 | { | |
3916 | struct timeval tv; | |
3917 | fd_set select_pipes; | |
3918 | int maxpipe, readycount; | |
3919 | ||
3920 | /* A return value of -1 can mean several things. If errno != ECHILD, it | |
3921 | either means invalid options (which we discount), or that this process was | |
3922 | interrupted by a signal. Just loop to try the waitpid() again. | |
3923 | ||
3924 | If errno == ECHILD, waitpid() is telling us that there are no subprocesses | |
3925 | in existence. This should never happen, and is an unexpected error. | |
3926 | However, there is a nasty complication when running under Linux. If "strace | |
3927 | -f" is being used under Linux to trace this process and its children, | |
3928 | subprocesses are "stolen" from their parents and become the children of the | |
3929 | tracing process. A general wait such as the one we've just obeyed returns | |
3930 | as if there are no children while subprocesses are running. Once a | |
3931 | subprocess completes, it is restored to the parent, and waitpid(-1) finds | |
3932 | it. Thanks to Joachim Wieland for finding all this out and suggesting a | |
3933 | palliative. | |
3934 | ||
3935 | This does not happen using "truss" on Solaris, nor (I think) with other | |
3936 | tracing facilities on other OS. It seems to be specific to Linux. | |
3937 | ||
3938 | What we do to get round this is to use kill() to see if any of our | |
3939 | subprocesses are still in existence. If kill() gives an OK return, we know | |
3940 | it must be for one of our processes - it can't be for a re-use of the pid, | |
3941 | because if our process had finished, waitpid() would have found it. If any | |
3942 | of our subprocesses are in existence, we proceed to use select() as if | |
3943 | waitpid() had returned zero. I think this is safe. */ | |
3944 | ||
3945 | if (pid < 0) | |
3946 | { | |
3947 | if (errno != ECHILD) continue; /* Repeats the waitpid() */ | |
3948 | ||
3949 | DEBUG(D_deliver) | |
3950 | debug_printf("waitpid() returned -1/ECHILD: checking explicitly " | |
3951 | "for process existence\n"); | |
3952 | ||
3953 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3954 | { | |
3955 | if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0) | |
3956 | { | |
3957 | DEBUG(D_deliver) debug_printf("process %d still exists: assume " | |
3958 | "stolen by strace\n", (int)pid); | |
3959 | break; /* With poffset set */ | |
3960 | } | |
3961 | } | |
3962 | ||
3963 | if (poffset >= remote_max_parallel) | |
3964 | { | |
3965 | DEBUG(D_deliver) debug_printf("*** no delivery children found\n"); | |
3966 | return NULL; /* This is the error return */ | |
3967 | } | |
3968 | } | |
3969 | ||
3970 | /* A pid value greater than 0 breaks the "while" loop. A negative value has | |
3971 | been handled above. A return value of zero means that there is at least one | |
3972 | subprocess, but there are no completed subprocesses. See if any pipes are | |
3973 | ready with any data for reading. */ | |
3974 | ||
3975 | DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n"); | |
3976 | ||
3977 | maxpipe = 0; | |
3978 | FD_ZERO(&select_pipes); | |
3979 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
420a0d19 CE |
3980 | if (parlist[poffset].pid != 0) |
3981 | { | |
3982 | int fd = parlist[poffset].fd; | |
3983 | FD_SET(fd, &select_pipes); | |
3984 | if (fd > maxpipe) maxpipe = fd; | |
3985 | } | |
420a0d19 CE |
3986 | |
3987 | /* Stick in a 60-second timeout, just in case. */ | |
3988 | ||
3989 | tv.tv_sec = 60; | |
3990 | tv.tv_usec = 0; | |
3991 | ||
3992 | readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes, | |
3993 | NULL, NULL, &tv); | |
3994 | ||
3995 | /* Scan through the pipes and read any that are ready; use the count | |
3996 | returned by select() to stop when there are no more. Select() can return | |
3997 | with no processes (e.g. if interrupted). This shouldn't matter. | |
3998 | ||
3999 | If par_read_pipe() returns TRUE, it means that either the terminating Z was | |
4000 | read, or there was a disaster. In either case, we are finished with this | |
4001 | process. Do an explicit wait() for the process and break the main loop if | |
4002 | it succeeds. | |
4003 | ||
4004 | It turns out that we have to deal with the case of an interrupted system | |
4005 | call, which can happen on some operating systems if the signal handling is | |
4006 | set up to do that by default. */ | |
4007 | ||
4008 | for (poffset = 0; | |
4009 | readycount > 0 && poffset < remote_max_parallel; | |
4010 | poffset++) | |
4011 | { | |
2ea97746 CE |
4012 | if ( (pid = parlist[poffset].pid) != 0 |
4013 | && FD_ISSET(parlist[poffset].fd, &select_pipes) | |
4014 | ) | |
420a0d19 CE |
4015 | { |
4016 | readycount--; | |
4017 | if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */ | |
420a0d19 CE |
4018 | for (;;) /* Loop for signals */ |
4019 | { | |
4020 | pid_t endedpid = waitpid(pid, &status, 0); | |
4021 | if (endedpid == pid) goto PROCESS_DONE; | |
4022 | if (endedpid != (pid_t)(-1) || errno != EINTR) | |
4023 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return " | |
4024 | "%d (errno = %d) from waitpid() for process %d", | |
4025 | (int)endedpid, errno, (int)pid); | |
4026 | } | |
420a0d19 CE |
4027 | } |
4028 | } | |
4029 | ||
4030 | /* Now go back and look for a completed subprocess again. */ | |
4031 | } | |
4032 | ||
4033 | /* A completed process was detected by the non-blocking waitpid(). Find the | |
4034 | data block that corresponds to this subprocess. */ | |
4035 | ||
4036 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
4037 | if (pid == parlist[poffset].pid) break; | |
4038 | ||
4039 | /* Found the data block; this is a known remote delivery process. We don't | |
4040 | need to repeat the outer loop. This should be what normally happens. */ | |
4041 | ||
4042 | if (poffset < remote_max_parallel) break; | |
4043 | ||
4044 | /* This situation is an error, but it's probably better to carry on looking | |
4045 | for another process than to give up (as we used to do). */ | |
4046 | ||
4047 | log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote " | |
4048 | "transport process list", pid); | |
4049 | } /* End of the "for" loop */ | |
4050 | ||
4051 | /* Come here when all the data was completely read after a select(), and | |
4052 | the process in pid has been wait()ed for. */ | |
4053 | ||
4054 | PROCESS_DONE: | |
4055 | ||
4056 | DEBUG(D_deliver) | |
4057 | { | |
4058 | if (status == 0) | |
4059 | debug_printf("remote delivery process %d ended\n", (int)pid); | |
4060 | else | |
4061 | debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid, | |
4062 | status); | |
4063 | } | |
4064 | ||
4065 | set_process_info("delivering %s", message_id); | |
4066 | ||
4067 | /* Get the chain of processed addresses */ | |
4068 | ||
4069 | addrlist = parlist[poffset].addrlist; | |
4070 | ||
4071 | /* If the process did not finish cleanly, record an error and freeze (except | |
4072 | for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed, | |
4073 | in case the delivery did actually happen. */ | |
4074 | ||
4075 | if ((status & 0xffff) != 0) | |
4076 | { | |
4077 | uschar *msg; | |
4078 | int msb = (status >> 8) & 255; | |
4079 | int lsb = status & 255; | |
4080 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
4081 | ||
4082 | msg = string_sprintf("%s transport process returned non-zero status 0x%04x: " | |
4083 | "%s %d", | |
4084 | addrlist->transport->driver_name, | |
4085 | status, | |
4086 | (msb == 0)? "terminated by signal" : "exit code", | |
4087 | code); | |
4088 | ||
4089 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
4090 | addrlist->special_action = SPECIAL_FREEZE; | |
4091 | ||
2ea97746 | 4092 | for (addr = addrlist; addr; addr = addr->next) |
420a0d19 CE |
4093 | { |
4094 | addr->transport_return = DEFER; | |
4095 | addr->message = msg; | |
4096 | } | |
4097 | ||
4098 | remove_journal = FALSE; | |
4099 | } | |
4100 | ||
4101 | /* Else complete reading the pipe to get the result of the delivery, if all | |
4102 | the data has not yet been obtained. */ | |
4103 | ||
4104 | else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE); | |
4105 | ||
4106 | /* Put the data count and return path into globals, mark the data slot unused, | |
4107 | decrement the count of subprocesses, and return the address chain. */ | |
4108 | ||
4109 | transport_count = parlist[poffset].transport_count; | |
4110 | used_return_path = parlist[poffset].return_path; | |
4111 | parlist[poffset].pid = 0; | |
4112 | parcount--; | |
4113 | return addrlist; | |
4114 | } | |
4115 | ||
4116 | ||
4117 | ||
4118 | /************************************************* | |
4119 | * Wait for subprocesses and post-process * | |
4120 | *************************************************/ | |
4121 | ||
4122 | /* This function waits for subprocesses until the number that are still running | |
4123 | is below a given threshold. For each complete subprocess, the addresses are | |
4124 | post-processed. If we can't find a running process, there is some shambles. | |
4125 | Better not bomb out, as that might lead to multiple copies of the message. Just | |
4126 | log and proceed as if all done. | |
4127 | ||
4128 | Arguments: | |
4129 | max maximum number of subprocesses to leave running | |
4130 | fallback TRUE if processing fallback hosts | |
4131 | ||
4132 | Returns: nothing | |
4133 | */ | |
4134 | ||
4135 | static void | |
4136 | par_reduce(int max, BOOL fallback) | |
4137 | { | |
4138 | while (parcount > max) | |
4139 | { | |
4140 | address_item *doneaddr = par_wait(); | |
2ea97746 | 4141 | if (!doneaddr) |
420a0d19 CE |
4142 | { |
4143 | log_write(0, LOG_MAIN|LOG_PANIC, | |
4144 | "remote delivery process count got out of step"); | |
4145 | parcount = 0; | |
4146 | } | |
2ea97746 CE |
4147 | else |
4148 | { | |
4149 | transport_instance * tp = doneaddr->transport; | |
4150 | if (tp->max_parallel) | |
4151 | enq_end(string_sprintf("tpt-serialize-%s", tp->name)); | |
4152 | ||
4153 | remote_post_process(doneaddr, LOG_MAIN, NULL, fallback); | |
4154 | } | |
420a0d19 CE |
4155 | } |
4156 | } | |
4157 | ||
2ea97746 CE |
4158 | static void |
4159 | rmt_dlv_checked_write(int fd, char id, char subid, void * buf, ssize_t size) | |
4160 | { | |
4161 | uschar pipe_header[PIPE_HEADER_SIZE+1]; | |
4162 | size_t total_len = PIPE_HEADER_SIZE + size; | |
420a0d19 | 4163 | |
2ea97746 CE |
4164 | struct iovec iov[2] = { |
4165 | { pipe_header, PIPE_HEADER_SIZE }, /* indication about the data to expect */ | |
4166 | { buf, size } /* *the* data */ | |
4167 | }; | |
420a0d19 | 4168 | |
2ea97746 | 4169 | ssize_t ret; |
420a0d19 | 4170 | |
2ea97746 CE |
4171 | /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */ |
4172 | /* complain to log if someone tries with buffer sizes we can't handle*/ | |
4173 | ||
4174 | if (size > BIG_BUFFER_SIZE-1) | |
4175 | { | |
4176 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
4177 | "Failed writing transport result to pipe: can't handle buffers > %d bytes. truncating!\n", | |
4178 | BIG_BUFFER_SIZE-1); | |
4179 | size = BIG_BUFFER_SIZE; | |
4180 | } | |
4181 | ||
4182 | /* Should we check that we do not write more than PIPE_BUF? What would | |
4183 | that help? */ | |
4184 | ||
4185 | /* convert size to human readable string prepended by id and subid */ | |
4186 | if (PIPE_HEADER_SIZE != snprintf(CS pipe_header, PIPE_HEADER_SIZE+1, "%c%c%05ld", | |
4187 | id, subid, (long)size)) | |
4188 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n"); | |
4189 | ||
4190 | DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%ld,final:%s\n", | |
4191 | id, subid, (long)size, pipe_header); | |
4192 | ||
4193 | if ((ret = writev(fd, iov, 2)) != total_len) | |
4194 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
4195 | "Failed writing transport result to pipe (%ld of %ld bytes): %s", | |
4196 | (long)ret, (long)total_len, ret == -1 ? strerror(errno) : "short write"); | |
420a0d19 CE |
4197 | } |
4198 | ||
4199 | /************************************************* | |
4200 | * Do remote deliveries * | |
4201 | *************************************************/ | |
4202 | ||
4203 | /* This function is called to process the addresses in addr_remote. We must | |
4204 | pick off the queue all addresses that have the same transport, remote | |
4205 | destination, and errors address, and hand them to the transport in one go, | |
4206 | subject to some configured limitations. If this is a run to continue delivering | |
4207 | to an existing delivery channel, skip all but those addresses that can go to | |
4208 | that channel. The skipped addresses just get deferred. | |
4209 | ||
4210 | If mua_wrapper is set, all addresses must be able to be sent in a single | |
4211 | transaction. If not, this function yields FALSE. | |
4212 | ||
4213 | In Exim 4, remote deliveries are always done in separate processes, even | |
4214 | if remote_max_parallel = 1 or if there's only one delivery to do. The reason | |
4215 | is so that the base process can retain privilege. This makes the | |
4216 | implementation of fallback transports feasible (though not initially done.) | |
4217 | ||
4218 | We create up to the configured number of subprocesses, each of which passes | |
4219 | back the delivery state via a pipe. (However, when sending down an existing | |
4220 | connection, remote_max_parallel is forced to 1.) | |
4221 | ||
4222 | Arguments: | |
4223 | fallback TRUE if processing fallback hosts | |
4224 | ||
4225 | Returns: TRUE normally | |
4226 | FALSE if mua_wrapper is set and the addresses cannot all be sent | |
4227 | in one transaction | |
4228 | */ | |
4229 | ||
4230 | static BOOL | |
4231 | do_remote_deliveries(BOOL fallback) | |
4232 | { | |
4233 | int parmax; | |
4234 | int delivery_count; | |
4235 | int poffset; | |
4236 | ||
4237 | parcount = 0; /* Number of executing subprocesses */ | |
4238 | ||
4239 | /* When sending down an existing channel, only do one delivery at a time. | |
4240 | We use a local variable (parmax) to hold the maximum number of processes; | |
4241 | this gets reduced from remote_max_parallel if we can't create enough pipes. */ | |
4242 | ||
2ea97746 | 4243 | if (continue_transport) remote_max_parallel = 1; |
420a0d19 CE |
4244 | parmax = remote_max_parallel; |
4245 | ||
4246 | /* If the data for keeping a list of processes hasn't yet been | |
4247 | set up, do so. */ | |
4248 | ||
2ea97746 | 4249 | if (!parlist) |
420a0d19 CE |
4250 | { |
4251 | parlist = store_get(remote_max_parallel * sizeof(pardata)); | |
4252 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
4253 | parlist[poffset].pid = 0; | |
4254 | } | |
4255 | ||
4256 | /* Now loop for each remote delivery */ | |
4257 | ||
2ea97746 | 4258 | for (delivery_count = 0; addr_remote; delivery_count++) |
420a0d19 CE |
4259 | { |
4260 | pid_t pid; | |
4261 | uid_t uid; | |
4262 | gid_t gid; | |
4263 | int pfd[2]; | |
4264 | int address_count = 1; | |
4265 | int address_count_max; | |
4266 | BOOL multi_domain; | |
4267 | BOOL use_initgroups; | |
4268 | BOOL pipe_done = FALSE; | |
4269 | transport_instance *tp; | |
4270 | address_item **anchor = &addr_remote; | |
4271 | address_item *addr = addr_remote; | |
4272 | address_item *last = addr; | |
4273 | address_item *next; | |
2ea97746 CE |
4274 | uschar * panicmsg; |
4275 | uschar * serialize_key = NULL; | |
420a0d19 CE |
4276 | |
4277 | /* Pull the first address right off the list. */ | |
4278 | ||
4279 | addr_remote = addr->next; | |
4280 | addr->next = NULL; | |
4281 | ||
4282 | DEBUG(D_deliver|D_transport) | |
4283 | debug_printf("--------> %s <--------\n", addr->address); | |
4284 | ||
4285 | /* If no transport has been set, there has been a big screw-up somewhere. */ | |
4286 | ||
2ea97746 | 4287 | if (!(tp = addr->transport)) |
420a0d19 | 4288 | { |
2ea97746 CE |
4289 | f.disable_logging = FALSE; /* Jic */ |
4290 | panicmsg = US"No transport set by router"; | |
4291 | goto panic_continue; | |
420a0d19 CE |
4292 | } |
4293 | ||
4294 | /* Check that this base address hasn't previously been delivered to this | |
4295 | transport. The check is necessary at this point to handle homonymic addresses | |
4296 | correctly in cases where the pattern of redirection changes between delivery | |
4297 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
4298 | time. */ | |
4299 | ||
4300 | if (previously_transported(addr, FALSE)) continue; | |
4301 | ||
4302 | /* Force failure if the message is too big. */ | |
4303 | ||
2ea97746 | 4304 | if (tp->message_size_limit) |
420a0d19 CE |
4305 | { |
4306 | int rc = check_message_size(tp, addr); | |
4307 | if (rc != OK) | |
4308 | { | |
4309 | addr->transport_return = rc; | |
4310 | remote_post_process(addr, LOG_MAIN, NULL, fallback); | |
4311 | continue; | |
4312 | } | |
4313 | } | |
4314 | ||
4315 | /* Get the flag which specifies whether the transport can handle different | |
2ea97746 CE |
4316 | domains that nevertheless resolve to the same set of hosts. If it needs |
4317 | expanding, get variables set: $address_data, $domain_data, $localpart_data, | |
4318 | $host, $host_address, $host_port. */ | |
4319 | if (tp->expand_multi_domain) | |
4320 | deliver_set_expansions(addr); | |
420a0d19 | 4321 | |
2ea97746 CE |
4322 | if (exp_bool(addr, US"transport", tp->name, D_transport, |
4323 | US"multi_domain", tp->multi_domain, tp->expand_multi_domain, | |
4324 | &multi_domain) != OK) | |
4325 | { | |
4326 | deliver_set_expansions(NULL); | |
4327 | panicmsg = addr->message; | |
4328 | goto panic_continue; | |
4329 | } | |
420a0d19 CE |
4330 | |
4331 | /* Get the maximum it can handle in one envelope, with zero meaning | |
4332 | unlimited, which is forced for the MUA wrapper case. */ | |
4333 | ||
4334 | address_count_max = tp->max_addresses; | |
4335 | if (address_count_max == 0 || mua_wrapper) address_count_max = 999999; | |
4336 | ||
4337 | ||
4338 | /************************************************************************/ | |
4339 | /***** This is slightly experimental code, but should be safe. *****/ | |
4340 | ||
4341 | /* The address_count_max value is the maximum number of addresses that the | |
4342 | transport can send in one envelope. However, the transport must be capable of | |
4343 | dealing with any number of addresses. If the number it gets exceeds its | |
4344 | envelope limitation, it must send multiple copies of the message. This can be | |
4345 | done over a single connection for SMTP, so uses less resources than making | |
4346 | multiple connections. On the other hand, if remote_max_parallel is greater | |
4347 | than one, it is perhaps a good idea to use parallel processing to move the | |
4348 | message faster, even if that results in multiple simultaneous connections to | |
4349 | the same host. | |
4350 | ||
4351 | How can we come to some compromise between these two ideals? What we do is to | |
4352 | limit the number of addresses passed to a single instance of a transport to | |
4353 | the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total | |
4354 | number of addresses routed to remote transports divided by | |
4355 | remote_max_parallel. For example, if the message has 100 remote recipients, | |
4356 | remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at | |
4357 | once. But if rcpt_max is 100, we could send up to 100. | |
4358 | ||
4359 | Of course, not all the remotely addresses in a message are going to go to the | |
4360 | same set of hosts (except in smarthost configurations), so this is just a | |
4361 | heuristic way of dividing up the work. | |
4362 | ||
4363 | Furthermore (1), because this may not be wanted in some cases, and also to | |
4364 | cope with really pathological cases, there is also a limit to the number of | |
4365 | messages that are sent over one connection. This is the same limit that is | |
4366 | used when sending several different messages over the same connection. | |
4367 | Continue_sequence is set when in this situation, to the number sent so | |
4368 | far, including this message. | |
4369 | ||
4370 | Furthermore (2), when somebody explicitly sets the maximum value to 1, it | |
4371 | is probably because they are using VERP, in which case they want to pass only | |
4372 | one address at a time to the transport, in order to be able to use | |
4373 | $local_part and $domain in constructing a new return path. We could test for | |
4374 | the use of these variables, but as it is so likely they will be used when the | |
4375 | maximum is 1, we don't bother. Just leave the value alone. */ | |
4376 | ||
2ea97746 CE |
4377 | if ( address_count_max != 1 |
4378 | && address_count_max < remote_delivery_count/remote_max_parallel | |
4379 | ) | |
420a0d19 CE |
4380 | { |
4381 | int new_max = remote_delivery_count/remote_max_parallel; | |
4382 | int message_max = tp->connection_max_messages; | |
4383 | if (connection_max_messages >= 0) message_max = connection_max_messages; | |
4384 | message_max -= continue_sequence - 1; | |
4385 | if (message_max > 0 && new_max > address_count_max * message_max) | |
4386 | new_max = address_count_max * message_max; | |
4387 | address_count_max = new_max; | |
4388 | } | |
4389 | ||
4390 | /************************************************************************/ | |
4391 | ||
4392 | ||
4393 | /* Pick off all addresses which have the same transport, errors address, | |
4394 | destination, and extra headers. In some cases they point to the same host | |
4395 | list, but we also need to check for identical host lists generated from | |
4396 | entirely different domains. The host list pointers can be NULL in the case | |
4397 | where the hosts are defined in the transport. There is also a configured | |
4398 | maximum limit of addresses that can be handled at once (see comments above | |
2ea97746 CE |
4399 | for how it is computed). |
4400 | If the transport does not handle multiple domains, enforce that also, | |
4401 | and if it might need a per-address check for this, re-evaluate it. | |
4402 | */ | |
4403 | ||
4404 | while ((next = *anchor) && address_count < address_count_max) | |
4405 | { | |
4406 | BOOL md; | |
4407 | if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0) | |
4408 | && tp == next->transport | |
4409 | && same_hosts(next->host_list, addr->host_list) | |
4410 | && same_strings(next->prop.errors_address, addr->prop.errors_address) | |
4411 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
4412 | && same_ugid(tp, next, addr) | |
4413 | && ( next->prop.remove_headers == addr->prop.remove_headers | |
4414 | || ( next->prop.remove_headers | |
4415 | && addr->prop.remove_headers | |
4416 | && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0 | |
4417 | ) ) | |
4418 | && ( !multi_domain | |
4419 | || ( ( | |
4420 | (void)(!tp->expand_multi_domain || ((void)deliver_set_expansions(next), 1)), | |
4421 | exp_bool(addr, | |
4422 | US"transport", next->transport->name, D_transport, | |
4423 | US"multi_domain", next->transport->multi_domain, | |
4424 | next->transport->expand_multi_domain, &md) == OK | |
4425 | ) | |
4426 | && md | |
4427 | ) ) ) | |
420a0d19 CE |
4428 | { |
4429 | *anchor = next->next; | |
4430 | next->next = NULL; | |
4431 | next->first = addr; /* remember top one (for retry processing) */ | |
4432 | last->next = next; | |
4433 | last = next; | |
4434 | address_count++; | |
4435 | } | |
4436 | else anchor = &(next->next); | |
2ea97746 | 4437 | deliver_set_expansions(NULL); |
420a0d19 CE |
4438 | } |
4439 | ||
4440 | /* If we are acting as an MUA wrapper, all addresses must go in a single | |
4441 | transaction. If not, put them back on the chain and yield FALSE. */ | |
4442 | ||
2ea97746 | 4443 | if (mua_wrapper && addr_remote) |
420a0d19 CE |
4444 | { |
4445 | last->next = addr_remote; | |
4446 | addr_remote = addr; | |
4447 | return FALSE; | |
4448 | } | |
4449 | ||
2ea97746 CE |
4450 | /* If the transport is limited for parallellism, enforce that here. |
4451 | The hints DB entry is decremented in par_reduce(), when we reap the | |
4452 | transport process. */ | |
4453 | ||
4454 | if (tpt_parallel_check(tp, addr, &serialize_key)) | |
4455 | if ((panicmsg = expand_string_message)) | |
4456 | goto panic_continue; | |
4457 | else | |
4458 | continue; /* Loop for the next set of addresses. */ | |
4459 | ||
420a0d19 CE |
4460 | /* Set up the expansion variables for this set of addresses */ |
4461 | ||
4462 | deliver_set_expansions(addr); | |
4463 | ||
4464 | /* Ensure any transport-set auth info is fresh */ | |
4465 | addr->authenticator = addr->auth_id = addr->auth_sndr = NULL; | |
4466 | ||
4467 | /* Compute the return path, expanding a new one if required. The old one | |
4468 | must be set first, as it might be referred to in the expansion. */ | |
4469 | ||
2ea97746 CE |
4470 | if(addr->prop.errors_address) |
4471 | return_path = addr->prop.errors_address; | |
420a0d19 | 4472 | #ifdef EXPERIMENTAL_SRS |
2ea97746 CE |
4473 | else if(addr->prop.srs_sender) |
4474 | return_path = addr->prop.srs_sender; | |
420a0d19 CE |
4475 | #endif |
4476 | else | |
4477 | return_path = sender_address; | |
4478 | ||
2ea97746 | 4479 | if (tp->return_path) |
420a0d19 CE |
4480 | { |
4481 | uschar *new_return_path = expand_string(tp->return_path); | |
2ea97746 CE |
4482 | if (new_return_path) |
4483 | return_path = new_return_path; | |
4484 | else if (!f.expand_string_forcedfail) | |
420a0d19 | 4485 | { |
2ea97746 CE |
4486 | panicmsg = string_sprintf("Failed to expand return path \"%s\": %s", |
4487 | tp->return_path, expand_string_message); | |
4488 | goto enq_continue; | |
420a0d19 | 4489 | } |
420a0d19 CE |
4490 | } |
4491 | ||
4492 | /* Find the uid, gid, and use_initgroups setting for this transport. Failure | |
4493 | logs and sets up error messages, so we just post-process and continue with | |
4494 | the next address. */ | |
4495 | ||
4496 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) | |
4497 | { | |
2ea97746 CE |
4498 | panicmsg = NULL; |
4499 | goto enq_continue; | |
420a0d19 CE |
4500 | } |
4501 | ||
4502 | /* If this transport has a setup function, call it now so that it gets | |
4503 | run in this process and not in any subprocess. That way, the results of | |
4504 | any setup that are retained by the transport can be reusable. One of the | |
4505 | things the setup does is to set the fallback host lists in the addresses. | |
4506 | That is why it is called at this point, before the continue delivery | |
4507 | processing, because that might use the fallback hosts. */ | |
4508 | ||
2ea97746 | 4509 | if (tp->setup) |
420a0d19 CE |
4510 | (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL)); |
4511 | ||
2ea97746 CE |
4512 | /* If we have a connection still open from a verify stage (lazy-close) |
4513 | treat it as if it is a continued connection (apart from the counter used | |
4514 | for the log line mark). */ | |
4515 | ||
4516 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) | |
4517 | { | |
4518 | DEBUG(D_deliver) | |
4519 | debug_printf("lazy-callout-close: have conn still open from verification\n"); | |
4520 | continue_transport = cutthrough.transport; | |
4521 | continue_hostname = string_copy(cutthrough.host.name); | |
4522 | continue_host_address = string_copy(cutthrough.host.address); | |
4523 | continue_sequence = 1; | |
4524 | sending_ip_address = cutthrough.snd_ip; | |
4525 | sending_port = cutthrough.snd_port; | |
4526 | smtp_peer_options = cutthrough.peer_options; | |
4527 | } | |
4528 | ||
420a0d19 CE |
4529 | /* If this is a run to continue delivery down an already-established |
4530 | channel, check that this set of addresses matches the transport and | |
4531 | the channel. If it does not, defer the addresses. If a host list exists, | |
4532 | we must check that the continue host is on the list. Otherwise, the | |
4533 | host is set in the transport. */ | |
4534 | ||
2ea97746 CE |
4535 | f.continue_more = FALSE; /* In case got set for the last lot */ |
4536 | if (continue_transport) | |
420a0d19 CE |
4537 | { |
4538 | BOOL ok = Ustrcmp(continue_transport, tp->name) == 0; | |
2ea97746 CE |
4539 | |
4540 | /* If the transport is about to override the host list do not check | |
4541 | it here but take the cost of running the transport process to discover | |
4542 | if the continued_hostname connection is suitable. This is a layering | |
4543 | violation which is unfortunate as it requires we haul in the smtp | |
4544 | include file. */ | |
4545 | ||
4546 | if (ok) | |
420a0d19 | 4547 | { |
2ea97746 CE |
4548 | smtp_transport_options_block * ob; |
4549 | ||
4550 | if ( !( Ustrcmp(tp->info->driver_name, "smtp") == 0 | |
4551 | && (ob = (smtp_transport_options_block *)tp->options_block) | |
4552 | && ob->hosts_override && ob->hosts | |
4553 | ) | |
4554 | && addr->host_list | |
4555 | ) | |
4556 | { | |
4557 | host_item * h; | |
4558 | ok = FALSE; | |
4559 | for (h = addr->host_list; h; h = h->next) | |
4560 | if (Ustrcmp(h->name, continue_hostname) == 0) | |
4561 | /*XXX should also check port here */ | |
4562 | { ok = TRUE; break; } | |
4563 | } | |
420a0d19 CE |
4564 | } |
4565 | ||
4566 | /* Addresses not suitable; defer or queue for fallback hosts (which | |
4567 | might be the continue host) and skip to next address. */ | |
4568 | ||
4569 | if (!ok) | |
4570 | { | |
2ea97746 CE |
4571 | DEBUG(D_deliver) debug_printf("not suitable for continue_transport (%s)\n", |
4572 | Ustrcmp(continue_transport, tp->name) != 0 | |
4573 | ? string_sprintf("tpt %s vs %s", continue_transport, tp->name) | |
4574 | : string_sprintf("no host matching %s", continue_hostname)); | |
4575 | if (serialize_key) enq_end(serialize_key); | |
420a0d19 | 4576 | |
2ea97746 | 4577 | if (addr->fallback_hosts && !fallback) |
420a0d19 | 4578 | { |
2ea97746 | 4579 | for (next = addr; ; next = next->next) |
420a0d19 CE |
4580 | { |
4581 | next->host_list = next->fallback_hosts; | |
4582 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address); | |
2ea97746 | 4583 | if (!next->next) break; |
420a0d19 CE |
4584 | } |
4585 | next->next = addr_fallback; | |
4586 | addr_fallback = addr; | |
4587 | } | |
4588 | ||
4589 | else | |
2ea97746 CE |
4590 | { |
4591 | for (next = addr; ; next = next->next) | |
4592 | { | |
4593 | DEBUG(D_deliver) debug_printf(" %s to def list\n", next->address); | |
4594 | if (!next->next) break; | |
4595 | } | |
4596 | next->next = addr_defer; | |
4597 | addr_defer = addr; | |
4598 | } | |
420a0d19 CE |
4599 | |
4600 | continue; | |
4601 | } | |
4602 | ||
4603 | /* Set a flag indicating whether there are further addresses that list | |
4604 | the continued host. This tells the transport to leave the channel open, | |
2ea97746 CE |
4605 | but not to pass it to another delivery process. We'd like to do that |
4606 | for non-continue_transport cases too but the knowlege of which host is | |
4607 | connected to is too hard to manage. Perhaps we need a finer-grain | |
4608 | interface to the transport. */ | |
420a0d19 | 4609 | |
2ea97746 | 4610 | for (next = addr_remote; next && !f.continue_more; next = next->next) |
420a0d19 CE |
4611 | { |
4612 | host_item *h; | |
2ea97746 | 4613 | for (h = next->host_list; h; h = h->next) |
420a0d19 | 4614 | if (Ustrcmp(h->name, continue_hostname) == 0) |
2ea97746 | 4615 | { f.continue_more = TRUE; break; } |
420a0d19 CE |
4616 | } |
4617 | } | |
4618 | ||
4619 | /* The transports set up the process info themselves as they may connect | |
4620 | to more than one remote machine. They also have to set up the filter | |
4621 | arguments, if required, so that the host name and address are available | |
4622 | for expansion. */ | |
4623 | ||
4624 | transport_filter_argv = NULL; | |
4625 | ||
4626 | /* Create the pipe for inter-process communication. If pipe creation | |
4627 | fails, it is probably because the value of remote_max_parallel is so | |
4628 | large that too many file descriptors for pipes have been created. Arrange | |
4629 | to wait for a process to finish, and then try again. If we still can't | |
4630 | create a pipe when all processes have finished, break the retry loop. */ | |
4631 | ||
4632 | while (!pipe_done) | |
4633 | { | |
4634 | if (pipe(pfd) == 0) pipe_done = TRUE; | |
4635 | else if (parcount > 0) parmax = parcount; | |
4636 | else break; | |
4637 | ||
4638 | /* We need to make the reading end of the pipe non-blocking. There are | |
4639 | two different options for this. Exim is cunningly (I hope!) coded so | |
4640 | that it can use either of them, though it prefers O_NONBLOCK, which | |
4641 | distinguishes between EOF and no-more-data. */ | |
4642 | ||
2ea97746 CE |
4643 | /* The data appears in a timely manner and we already did a select on |
4644 | all pipes, so I do not see a reason to use non-blocking IO here | |
4645 | ||
4646 | #ifdef O_NONBLOCK | |
420a0d19 | 4647 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK); |
2ea97746 | 4648 | #else |
420a0d19 | 4649 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY); |
2ea97746 CE |
4650 | #endif |
4651 | */ | |
420a0d19 CE |
4652 | |
4653 | /* If the maximum number of subprocesses already exist, wait for a process | |
4654 | to finish. If we ran out of file descriptors, parmax will have been reduced | |
4655 | from its initial value of remote_max_parallel. */ | |
4656 | ||
4657 | par_reduce(parmax - 1, fallback); | |
4658 | } | |
4659 | ||
4660 | /* If we failed to create a pipe and there were no processes to wait | |
4661 | for, we have to give up on this one. Do this outside the above loop | |
4662 | so that we can continue the main loop. */ | |
4663 | ||
4664 | if (!pipe_done) | |
4665 | { | |
2ea97746 CE |
4666 | panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno)); |
4667 | goto enq_continue; | |
420a0d19 CE |
4668 | } |
4669 | ||
4670 | /* Find a free slot in the pardata list. Must do this after the possible | |
4671 | waiting for processes to finish, because a terminating process will free | |
4672 | up a slot. */ | |
4673 | ||
4674 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
2ea97746 CE |
4675 | if (parlist[poffset].pid == 0) |
4676 | break; | |
420a0d19 CE |
4677 | |
4678 | /* If there isn't one, there has been a horrible disaster. */ | |
4679 | ||
4680 | if (poffset >= remote_max_parallel) | |
4681 | { | |
4682 | (void)close(pfd[pipe_write]); | |
4683 | (void)close(pfd[pipe_read]); | |
2ea97746 CE |
4684 | panicmsg = US"Unexpectedly no free subprocess slot"; |
4685 | goto enq_continue; | |
420a0d19 CE |
4686 | } |
4687 | ||
4688 | /* Now fork a subprocess to do the remote delivery, but before doing so, | |
2ea97746 | 4689 | ensure that any cached resources are released so as not to interfere with |
420a0d19 CE |
4690 | what happens in the subprocess. */ |
4691 | ||
4692 | search_tidyup(); | |
4693 | ||
4694 | if ((pid = fork()) == 0) | |
4695 | { | |
4696 | int fd = pfd[pipe_write]; | |
4697 | host_item *h; | |
4698 | ||
4699 | /* Setting this global in the subprocess means we need never clear it */ | |
4700 | transport_name = tp->name; | |
4701 | ||
4702 | /* There are weird circumstances in which logging is disabled */ | |
2ea97746 | 4703 | f.disable_logging = tp->disable_logging; |
420a0d19 CE |
4704 | |
4705 | /* Show pids on debug output if parallelism possible */ | |
4706 | ||
2ea97746 | 4707 | if (parmax > 1 && (parcount > 0 || addr_remote)) |
420a0d19 CE |
4708 | { |
4709 | DEBUG(D_any|D_v) debug_selector |= D_pid; | |
4710 | DEBUG(D_deliver) debug_printf("Remote delivery process started\n"); | |
4711 | } | |
4712 | ||
4713 | /* Reset the random number generator, so different processes don't all | |
4714 | have the same sequence. In the test harness we want different, but | |
4715 | predictable settings for each delivery process, so do something explicit | |
4716 | here rather they rely on the fixed reset in the random number function. */ | |
4717 | ||
2ea97746 | 4718 | random_seed = f.running_in_test_harness ? 42 + 2*delivery_count : 0; |
420a0d19 CE |
4719 | |
4720 | /* Set close-on-exec on the pipe so that it doesn't get passed on to | |
4721 | a new process that may be forked to do another delivery down the same | |
4722 | SMTP connection. */ | |
4723 | ||
4724 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); | |
4725 | ||
4726 | /* Close open file descriptors for the pipes of other processes | |
4727 | that are running in parallel. */ | |
4728 | ||
4729 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
4730 | if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd); | |
4731 | ||
4732 | /* This process has inherited a copy of the file descriptor | |
4733 | for the data file, but its file pointer is shared with all the | |
4734 | other processes running in parallel. Therefore, we have to re-open | |
4735 | the file in order to get a new file descriptor with its own | |
4736 | file pointer. We don't need to lock it, as the lock is held by | |
4737 | the parent process. There doesn't seem to be any way of doing | |
4738 | a dup-with-new-file-pointer. */ | |
4739 | ||
4740 | (void)close(deliver_datafile); | |
2ea97746 CE |
4741 | { |
4742 | uschar * fname = spool_fname(US"input", message_subdir, message_id, US"-D"); | |
420a0d19 | 4743 | |
2ea97746 CE |
4744 | if ((deliver_datafile = Uopen(fname, |
4745 | #ifdef O_CLOEXEC | |
4746 | O_CLOEXEC | | |
4747 | #endif | |
4748 | O_RDWR | O_APPEND, 0)) < 0) | |
420a0d19 | 4749 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote " |
2ea97746 CE |
4750 | "parallel delivery: %s", fname, strerror(errno)); |
4751 | } | |
420a0d19 CE |
4752 | |
4753 | /* Set the close-on-exec flag */ | |
2ea97746 | 4754 | #ifndef O_CLOEXEC |
420a0d19 CE |
4755 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
4756 | FD_CLOEXEC); | |
2ea97746 | 4757 | #endif |
420a0d19 CE |
4758 | |
4759 | /* Set the uid/gid of this process; bombs out on failure. */ | |
4760 | ||
4761 | exim_setugid(uid, gid, use_initgroups, | |
4762 | string_sprintf("remote delivery to %s with transport=%s", | |
4763 | addr->address, tp->name)); | |
4764 | ||
4765 | /* Close the unwanted half of this process' pipe, set the process state, | |
4766 | and run the transport. Afterwards, transport_count will contain the number | |
4767 | of bytes written. */ | |
4768 | ||
4769 | (void)close(pfd[pipe_read]); | |
4770 | set_process_info("delivering %s using %s", message_id, tp->name); | |
4771 | debug_print_string(tp->debug_string); | |
4772 | if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr); | |
4773 | ||
4774 | set_process_info("delivering %s (just run %s for %s%s in subprocess)", | |
2ea97746 | 4775 | message_id, tp->name, addr->address, addr->next ? ", ..." : ""); |
420a0d19 CE |
4776 | |
4777 | /* Ensure any cached resources that we used are now released */ | |
4778 | ||
4779 | search_tidyup(); | |
4780 | ||
4781 | /* Pass the result back down the pipe. This is a lot more information | |
4782 | than is needed for a local delivery. We have to send back the error | |
4783 | status for each address, the usability status for each host that is | |
4784 | flagged as unusable, and all the retry items. When TLS is in use, we | |
4785 | send also the cipher and peerdn information. Each type of information | |
4786 | is flagged by an identifying byte, and is then in a fixed format (with | |
4787 | strings terminated by zeros), and there is a final terminator at the | |
4788 | end. The host information and retry information is all attached to | |
4789 | the first address, so that gets sent at the start. */ | |
4790 | ||
4791 | /* Host unusability information: for most success cases this will | |
4792 | be null. */ | |
4793 | ||
2ea97746 | 4794 | for (h = addr->host_list; h; h = h->next) |
420a0d19 | 4795 | { |
2ea97746 CE |
4796 | if (!h->address || h->status < hstatus_unusable) continue; |
4797 | sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address); | |
4798 | rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3); | |
420a0d19 CE |
4799 | } |
4800 | ||
4801 | /* The number of bytes written. This is the same for each address. Even | |
4802 | if we sent several copies of the message down the same connection, the | |
4803 | size of each one is the same, and it's that value we have got because | |
4804 | transport_count gets reset before calling transport_write_message(). */ | |
4805 | ||
2ea97746 CE |
4806 | memcpy(big_buffer, &transport_count, sizeof(transport_count)); |
4807 | rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count)); | |
420a0d19 CE |
4808 | |
4809 | /* Information about what happened to each address. Four item types are | |
4810 | used: an optional 'X' item first, for TLS information, then an optional "C" | |
4811 | item for any client-auth info followed by 'R' items for any retry settings, | |
4812 | and finally an 'A' item for the remaining data. */ | |
4813 | ||
2ea97746 | 4814 | for(; addr; addr = addr->next) |
420a0d19 CE |
4815 | { |
4816 | uschar *ptr; | |
4817 | retry_item *r; | |
4818 | ||
4819 | /* The certificate verification status goes into the flags */ | |
4820 | if (tls_out.certificate_verified) setflag(addr, af_cert_verified); | |
2ea97746 CE |
4821 | #ifdef SUPPORT_DANE |
4822 | if (tls_out.dane_verified) setflag(addr, af_dane_verified); | |
4823 | #endif | |
420a0d19 CE |
4824 | |
4825 | /* Use an X item only if there's something to send */ | |
2ea97746 | 4826 | #ifdef SUPPORT_TLS |
420a0d19 CE |
4827 | if (addr->cipher) |
4828 | { | |
2ea97746 | 4829 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1; |
420a0d19 CE |
4830 | if (!addr->peerdn) |
4831 | *ptr++ = 0; | |
4832 | else | |
2ea97746 | 4833 | ptr += sprintf(CS ptr, "%.512s", addr->peerdn) + 1; |
420a0d19 | 4834 | |
2ea97746 | 4835 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); |
420a0d19 | 4836 | } |
2ea97746 CE |
4837 | else if (continue_proxy_cipher) |
4838 | { | |
4839 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", continue_proxy_cipher) + 1; | |
4840 | *ptr++ = 0; | |
4841 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); | |
4842 | } | |
4843 | ||
420a0d19 CE |
4844 | if (addr->peercert) |
4845 | { | |
4846 | ptr = big_buffer; | |
420a0d19 CE |
4847 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert)) |
4848 | while(*ptr++); | |
4849 | else | |
4850 | *ptr++ = 0; | |
2ea97746 | 4851 | rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer); |
420a0d19 CE |
4852 | } |
4853 | if (addr->ourcert) | |
4854 | { | |
4855 | ptr = big_buffer; | |
420a0d19 CE |
4856 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert)) |
4857 | while(*ptr++); | |
4858 | else | |
4859 | *ptr++ = 0; | |
2ea97746 | 4860 | rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer); |
420a0d19 | 4861 | } |
2ea97746 | 4862 | # ifndef DISABLE_OCSP |
420a0d19 CE |
4863 | if (addr->ocsp > OCSP_NOT_REQ) |
4864 | { | |
2ea97746 CE |
4865 | ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1; |
4866 | rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer); | |
420a0d19 | 4867 | } |
2ea97746 CE |
4868 | # endif |
4869 | #endif /*SUPPORT_TLS*/ | |
420a0d19 CE |
4870 | |
4871 | if (client_authenticator) | |
4872 | { | |
2ea97746 CE |
4873 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1; |
4874 | rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer); | |
420a0d19 CE |
4875 | } |
4876 | if (client_authenticated_id) | |
4877 | { | |
2ea97746 CE |
4878 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1; |
4879 | rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer); | |
420a0d19 CE |
4880 | } |
4881 | if (client_authenticated_sender) | |
4882 | { | |
2ea97746 CE |
4883 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1; |
4884 | rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer); | |
420a0d19 CE |
4885 | } |
4886 | ||
2ea97746 CE |
4887 | #ifndef DISABLE_PRDR |
4888 | if (testflag(addr, af_prdr_used)) | |
4889 | rmt_dlv_checked_write(fd, 'P', '0', NULL, 0); | |
4890 | #endif | |
4891 | ||
4892 | if (testflag(addr, af_pipelining)) | |
4893 | #ifdef EXPERIMENTAL_PIPE_CONNECT | |
4894 | if (testflag(addr, af_early_pipe)) | |
4895 | rmt_dlv_checked_write(fd, 'L', '2', NULL, 0); | |
4896 | else | |
4897 | #endif | |
4898 | rmt_dlv_checked_write(fd, 'L', '1', NULL, 0); | |
4899 | ||
4900 | if (testflag(addr, af_chunking_used)) | |
4901 | rmt_dlv_checked_write(fd, 'K', '0', NULL, 0); | |
4902 | ||
4903 | if (testflag(addr, af_tcp_fastopen_conn)) | |
4904 | rmt_dlv_checked_write(fd, 'T', | |
4905 | testflag(addr, af_tcp_fastopen) ? testflag(addr, af_tcp_fastopen_data) | |
4906 | ? '2' : '1' : '0', | |
4907 | NULL, 0); | |
420a0d19 | 4908 | |
2ea97746 CE |
4909 | memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware)); |
4910 | rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware)); | |
420a0d19 CE |
4911 | |
4912 | /* Retry information: for most success cases this will be null. */ | |
4913 | ||
2ea97746 | 4914 | for (r = addr->retries; r; r = r->next) |
420a0d19 | 4915 | { |
2ea97746 | 4916 | sprintf(CS big_buffer, "%c%.500s", r->flags, r->key); |
420a0d19 | 4917 | ptr = big_buffer + Ustrlen(big_buffer+2) + 3; |
2ea97746 | 4918 | memcpy(ptr, &r->basic_errno, sizeof(r->basic_errno)); |
420a0d19 | 4919 | ptr += sizeof(r->basic_errno); |
2ea97746 | 4920 | memcpy(ptr, &r->more_errno, sizeof(r->more_errno)); |
420a0d19 | 4921 | ptr += sizeof(r->more_errno); |
2ea97746 | 4922 | if (!r->message) *ptr++ = 0; else |
420a0d19 CE |
4923 | { |
4924 | sprintf(CS ptr, "%.512s", r->message); | |
4925 | while(*ptr++); | |
4926 | } | |
2ea97746 | 4927 | rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer); |
420a0d19 CE |
4928 | } |
4929 | ||
2ea97746 CE |
4930 | #ifdef SUPPORT_SOCKS |
4931 | if (LOGGING(proxy) && proxy_session) | |
4932 | { | |
4933 | ptr = big_buffer; | |
4934 | if (proxy_local_address) | |
4935 | { | |
4936 | DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address); | |
4937 | ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1; | |
4938 | DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port); | |
4939 | memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port)); | |
4940 | ptr += sizeof(proxy_local_port); | |
4941 | } | |
4942 | else | |
4943 | *ptr++ = '\0'; | |
4944 | rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer); | |
4945 | } | |
4946 | #endif | |
4947 | ||
4948 | #ifdef EXPERIMENTAL_DSN_INFO | |
4949 | /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */ | |
4950 | if (addr->smtp_greeting) | |
4951 | { | |
4952 | DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting); | |
4953 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1; | |
4954 | if (addr->helo_response) | |
4955 | { | |
4956 | DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response); | |
4957 | ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1; | |
4958 | } | |
4959 | else | |
4960 | *ptr++ = '\0'; | |
4961 | rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer); | |
4962 | } | |
4963 | #endif | |
4964 | ||
4965 | /* The rest of the information goes in an 'A0' item. */ | |
420a0d19 | 4966 | |
2ea97746 CE |
4967 | sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action); |
4968 | ptr = big_buffer + 2; | |
4969 | memcpy(ptr, &addr->basic_errno, sizeof(addr->basic_errno)); | |
420a0d19 | 4970 | ptr += sizeof(addr->basic_errno); |
2ea97746 | 4971 | memcpy(ptr, &addr->more_errno, sizeof(addr->more_errno)); |
420a0d19 | 4972 | ptr += sizeof(addr->more_errno); |
2ea97746 CE |
4973 | memcpy(ptr, &addr->delivery_usec, sizeof(addr->delivery_usec)); |
4974 | ptr += sizeof(addr->delivery_usec); | |
4975 | memcpy(ptr, &addr->flags, sizeof(addr->flags)); | |
420a0d19 CE |
4976 | ptr += sizeof(addr->flags); |
4977 | ||
2ea97746 CE |
4978 | if (!addr->message) *ptr++ = 0; else |
4979 | ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1; | |
420a0d19 | 4980 | |
2ea97746 CE |
4981 | if (!addr->user_message) *ptr++ = 0; else |
4982 | ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1; | |
420a0d19 | 4983 | |
2ea97746 | 4984 | if (!addr->host_used) *ptr++ = 0; else |
420a0d19 | 4985 | { |
2ea97746 CE |
4986 | ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1; |
4987 | ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1; | |
4988 | memcpy(ptr, &addr->host_used->port, sizeof(addr->host_used->port)); | |
420a0d19 CE |
4989 | ptr += sizeof(addr->host_used->port); |
4990 | ||
4991 | /* DNS lookup status */ | |
4992 | *ptr++ = addr->host_used->dnssec==DS_YES ? '2' | |
4993 | : addr->host_used->dnssec==DS_NO ? '1' : '0'; | |
4994 | ||
4995 | } | |
2ea97746 CE |
4996 | rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer); |
4997 | } | |
4998 | ||
4999 | /* Local interface address/port */ | |
5000 | #ifdef EXPERIMENTAL_DSN_INFO | |
5001 | if (sending_ip_address) | |
5002 | #else | |
5003 | if (LOGGING(incoming_interface) && sending_ip_address) | |
5004 | #endif | |
5005 | { | |
5006 | uschar * ptr; | |
5007 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1; | |
5008 | ptr += sprintf(CS ptr, "%d", sending_port) + 1; | |
5009 | rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer); | |
420a0d19 CE |
5010 | } |
5011 | ||
5012 | /* Add termination flag, close the pipe, and that's it. The character | |
5013 | after 'Z' indicates whether continue_transport is now NULL or not. | |
5014 | A change from non-NULL to NULL indicates a problem with a continuing | |
5015 | connection. */ | |
5016 | ||
2ea97746 CE |
5017 | big_buffer[0] = continue_transport ? '1' : '0'; |
5018 | rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1); | |
420a0d19 CE |
5019 | (void)close(fd); |
5020 | exit(EXIT_SUCCESS); | |
5021 | } | |
5022 | ||
5023 | /* Back in the mainline: close the unwanted half of the pipe. */ | |
5024 | ||
5025 | (void)close(pfd[pipe_write]); | |
5026 | ||
2ea97746 CE |
5027 | /* If we have a connection still open from a verify stage (lazy-close) |
5028 | release its TLS library context (if any) as responsibility was passed to | |
5029 | the delivery child process. */ | |
5030 | ||
5031 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) | |
5032 | { | |
5033 | #ifdef SUPPORT_TLS | |
5034 | if (cutthrough.is_tls) | |
5035 | tls_close(cutthrough.cctx.tls_ctx, TLS_NO_SHUTDOWN); | |
5036 | #endif | |
5037 | (void) close(cutthrough.cctx.sock); | |
5038 | release_cutthrough_connection(US"passed to transport proc"); | |
5039 | } | |
5040 | ||
420a0d19 CE |
5041 | /* Fork failed; defer with error message */ |
5042 | ||
2ea97746 | 5043 | if (pid == -1) |
420a0d19 CE |
5044 | { |
5045 | (void)close(pfd[pipe_read]); | |
2ea97746 CE |
5046 | panicmsg = string_sprintf("fork failed for remote delivery to %s: %s", |
5047 | addr->domain, strerror(errno)); | |
5048 | goto enq_continue; | |
420a0d19 CE |
5049 | } |
5050 | ||
5051 | /* Fork succeeded; increment the count, and remember relevant data for | |
5052 | when the process finishes. */ | |
5053 | ||
5054 | parcount++; | |
5055 | parlist[poffset].addrlist = parlist[poffset].addr = addr; | |
5056 | parlist[poffset].pid = pid; | |
5057 | parlist[poffset].fd = pfd[pipe_read]; | |
5058 | parlist[poffset].done = FALSE; | |
5059 | parlist[poffset].msg = NULL; | |
5060 | parlist[poffset].return_path = return_path; | |
5061 | ||
5062 | /* If the process we've just started is sending a message down an existing | |
5063 | channel, wait for it now. This ensures that only one such process runs at | |
5064 | once, whatever the value of remote_max parallel. Otherwise, we might try to | |
5065 | send two or more messages simultaneously down the same channel. This could | |
5066 | happen if there are different domains that include the same host in otherwise | |
5067 | different host lists. | |
5068 | ||
5069 | Also, if the transport closes down the channel, this information gets back | |
5070 | (continue_transport gets set to NULL) before we consider any other addresses | |
5071 | in this message. */ | |
5072 | ||
2ea97746 | 5073 | if (continue_transport) par_reduce(0, fallback); |
420a0d19 CE |
5074 | |
5075 | /* Otherwise, if we are running in the test harness, wait a bit, to let the | |
5076 | newly created process get going before we create another process. This should | |
5077 | ensure repeatability in the tests. We only need to wait a tad. */ | |
5078 | ||
2ea97746 CE |
5079 | else if (f.running_in_test_harness) millisleep(500); |
5080 | ||
5081 | continue; | |
5082 | ||
5083 | enq_continue: | |
5084 | if (serialize_key) enq_end(serialize_key); | |
5085 | panic_continue: | |
5086 | remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback); | |
5087 | continue; | |
420a0d19 CE |
5088 | } |
5089 | ||
5090 | /* Reached the end of the list of addresses. Wait for all the subprocesses that | |
5091 | are still running and post-process their addresses. */ | |
5092 | ||
5093 | par_reduce(0, fallback); | |
5094 | return TRUE; | |
5095 | } | |
5096 | ||
5097 | ||
5098 | ||
5099 | ||
5100 | /************************************************* | |
5101 | * Split an address into local part and domain * | |
5102 | *************************************************/ | |
5103 | ||
5104 | /* This function initializes an address for routing by splitting it up into a | |
5105 | local part and a domain. The local part is set up twice - once in its original | |
5106 | casing, and once in lower case, and it is dequoted. We also do the "percent | |
5107 | hack" for configured domains. This may lead to a DEFER result if a lookup | |
5108 | defers. When a percent-hacking takes place, we insert a copy of the original | |
5109 | address as a new parent of this address, as if we have had a redirection. | |
5110 | ||
5111 | Argument: | |
5112 | addr points to an addr_item block containing the address | |
5113 | ||
5114 | Returns: OK | |
5115 | DEFER - could not determine if domain is %-hackable | |
5116 | */ | |
5117 | ||
5118 | int | |
2ea97746 | 5119 | deliver_split_address(address_item * addr) |
420a0d19 | 5120 | { |
2ea97746 CE |
5121 | uschar * address = addr->address; |
5122 | uschar * domain; | |
5123 | uschar * t; | |
5124 | int len; | |
5125 | ||
5126 | if (!(domain = Ustrrchr(address, '@'))) | |
5127 | return DEFER; /* should always have a domain, but just in case... */ | |
420a0d19 | 5128 | |
2ea97746 | 5129 | len = domain - address; |
420a0d19 CE |
5130 | addr->domain = string_copylc(domain+1); /* Domains are always caseless */ |
5131 | ||
5132 | /* The implication in the RFCs (though I can't say I've seen it spelled out | |
5133 | explicitly) is that quoting should be removed from local parts at the point | |
5134 | where they are locally interpreted. [The new draft "821" is more explicit on | |
5135 | this, Jan 1999.] We know the syntax is valid, so this can be done by simply | |
5136 | removing quoting backslashes and any unquoted doublequotes. */ | |
5137 | ||
5138 | t = addr->cc_local_part = store_get(len+1); | |
5139 | while(len-- > 0) | |
5140 | { | |
2ea97746 | 5141 | int c = *address++; |
420a0d19 CE |
5142 | if (c == '\"') continue; |
5143 | if (c == '\\') | |
5144 | { | |
5145 | *t++ = *address++; | |
5146 | len--; | |
5147 | } | |
5148 | else *t++ = c; | |
5149 | } | |
5150 | *t = 0; | |
5151 | ||
5152 | /* We do the percent hack only for those domains that are listed in | |
5153 | percent_hack_domains. A loop is required, to copy with multiple %-hacks. */ | |
5154 | ||
2ea97746 | 5155 | if (percent_hack_domains) |
420a0d19 CE |
5156 | { |
5157 | int rc; | |
5158 | uschar *new_address = NULL; | |
5159 | uschar *local_part = addr->cc_local_part; | |
5160 | ||
5161 | deliver_domain = addr->domain; /* set $domain */ | |
5162 | ||
2ea97746 CE |
5163 | while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0, |
5164 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) | |
5165 | == OK | |
5166 | && (t = Ustrrchr(local_part, '%')) != NULL | |
5167 | ) | |
420a0d19 CE |
5168 | { |
5169 | new_address = string_copy(local_part); | |
5170 | new_address[t - local_part] = '@'; | |
5171 | deliver_domain = string_copylc(t+1); | |
5172 | local_part = string_copyn(local_part, t - local_part); | |
5173 | } | |
5174 | ||
5175 | if (rc == DEFER) return DEFER; /* lookup deferred */ | |
5176 | ||
5177 | /* If hackery happened, set up new parent and alter the current address. */ | |
5178 | ||
2ea97746 | 5179 | if (new_address) |
420a0d19 CE |
5180 | { |
5181 | address_item *new_parent = store_get(sizeof(address_item)); | |
5182 | *new_parent = *addr; | |
5183 | addr->parent = new_parent; | |
2ea97746 | 5184 | new_parent->child_count = 1; |
420a0d19 CE |
5185 | addr->address = new_address; |
5186 | addr->unique = string_copy(new_address); | |
5187 | addr->domain = deliver_domain; | |
5188 | addr->cc_local_part = local_part; | |
5189 | DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n", | |
5190 | addr->address); | |
5191 | } | |
5192 | } | |
5193 | ||
5194 | /* Create the lowercased version of the final local part, and make that the | |
5195 | default one to be used. */ | |
5196 | ||
5197 | addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part); | |
5198 | return OK; | |
5199 | } | |
5200 | ||
5201 | ||
5202 | ||
5203 | ||
5204 | /************************************************* | |
5205 | * Get next error message text * | |
5206 | *************************************************/ | |
5207 | ||
5208 | /* If f is not NULL, read the next "paragraph", from a customized error message | |
5209 | text file, terminated by a line containing ****, and expand it. | |
5210 | ||
5211 | Arguments: | |
5212 | f NULL or a file to read from | |
5213 | which string indicating which string (for errors) | |
5214 | ||
5215 | Returns: NULL or an expanded string | |
5216 | */ | |
5217 | ||
5218 | static uschar * | |
5219 | next_emf(FILE *f, uschar *which) | |
5220 | { | |
2ea97746 CE |
5221 | uschar *yield; |
5222 | gstring * para; | |
420a0d19 CE |
5223 | uschar buffer[256]; |
5224 | ||
2ea97746 | 5225 | if (!f) return NULL; |
420a0d19 | 5226 | |
2ea97746 CE |
5227 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
5228 | return NULL; | |
420a0d19 | 5229 | |
2ea97746 | 5230 | para = string_get(256); |
420a0d19 CE |
5231 | for (;;) |
5232 | { | |
2ea97746 CE |
5233 | para = string_cat(para, buffer); |
5234 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) | |
5235 | break; | |
420a0d19 | 5236 | } |
2ea97746 CE |
5237 | if ((yield = expand_string(string_from_gstring(para)))) |
5238 | return yield; | |
420a0d19 CE |
5239 | |
5240 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from " | |
5241 | "bounce_message_file or warn_message_file (%s): %s", which, | |
5242 | expand_string_message); | |
5243 | return NULL; | |
5244 | } | |
5245 | ||
5246 | ||
5247 | ||
5248 | ||
5249 | /************************************************* | |
5250 | * Close down a passed transport channel * | |
5251 | *************************************************/ | |
5252 | ||
5253 | /* This function is called when a passed transport channel cannot be used. | |
5254 | It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED | |
5255 | so that the function call can be the argument of a "return" statement. | |
5256 | ||
5257 | Arguments: None | |
5258 | Returns: DELIVER_NOT_ATTEMPTED | |
5259 | */ | |
5260 | ||
5261 | static int | |
5262 | continue_closedown(void) | |
5263 | { | |
2ea97746 | 5264 | if (continue_transport) |
420a0d19 CE |
5265 | { |
5266 | transport_instance *t; | |
2ea97746 | 5267 | for (t = transports; t; t = t->next) |
420a0d19 CE |
5268 | if (Ustrcmp(t->name, continue_transport) == 0) |
5269 | { | |
2ea97746 | 5270 | if (t->info->closedown) (t->info->closedown)(t); |
420a0d19 CE |
5271 | break; |
5272 | } | |
420a0d19 CE |
5273 | } |
5274 | return DELIVER_NOT_ATTEMPTED; | |
5275 | } | |
5276 | ||
5277 | ||
5278 | ||
5279 | ||
5280 | /************************************************* | |
5281 | * Print address information * | |
5282 | *************************************************/ | |
5283 | ||
5284 | /* This function is called to output an address, or information about an | |
5285 | address, for bounce or defer messages. If the hide_child flag is set, all we | |
5286 | output is the original ancestor address. | |
5287 | ||
5288 | Arguments: | |
5289 | addr points to the address | |
5290 | f the FILE to print to | |
5291 | si an initial string | |
5292 | sc a continuation string for before "generated" | |
5293 | se an end string | |
5294 | ||
5295 | Returns: TRUE if the address is not hidden | |
5296 | */ | |
5297 | ||
5298 | static BOOL | |
5299 | print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc, | |
5300 | uschar *se) | |
5301 | { | |
5302 | BOOL yield = TRUE; | |
5303 | uschar *printed = US""; | |
5304 | address_item *ancestor = addr; | |
2ea97746 | 5305 | while (ancestor->parent) ancestor = ancestor->parent; |
420a0d19 CE |
5306 | |
5307 | fprintf(f, "%s", CS si); | |
5308 | ||
2ea97746 | 5309 | if (addr->parent && testflag(addr, af_hide_child)) |
420a0d19 CE |
5310 | { |
5311 | printed = US"an undisclosed address"; | |
5312 | yield = FALSE; | |
5313 | } | |
2ea97746 | 5314 | else if (!testflag(addr, af_pfr) || !addr->parent) |
420a0d19 CE |
5315 | printed = addr->address; |
5316 | ||
5317 | else | |
5318 | { | |
5319 | uschar *s = addr->address; | |
5320 | uschar *ss; | |
5321 | ||
5322 | if (addr->address[0] == '>') { ss = US"mail"; s++; } | |
5323 | else if (addr->address[0] == '|') ss = US"pipe"; | |
5324 | else ss = US"save"; | |
5325 | ||
5326 | fprintf(f, "%s to %s%sgenerated by ", ss, s, sc); | |
5327 | printed = addr->parent->address; | |
5328 | } | |
5329 | ||
5330 | fprintf(f, "%s", CS string_printing(printed)); | |
5331 | ||
5332 | if (ancestor != addr) | |
5333 | { | |
2ea97746 CE |
5334 | uschar *original = ancestor->onetime_parent; |
5335 | if (!original) original= ancestor->address; | |
420a0d19 CE |
5336 | if (strcmpic(original, printed) != 0) |
5337 | fprintf(f, "%s(%sgenerated from %s)", sc, | |
2ea97746 | 5338 | ancestor != addr->parent ? "ultimately " : "", |
420a0d19 CE |
5339 | string_printing(original)); |
5340 | } | |
5341 | ||
2ea97746 CE |
5342 | if (addr->host_used) |
5343 | fprintf(f, "\n host %s [%s]", | |
5344 | addr->host_used->name, addr->host_used->address); | |
5345 | ||
420a0d19 CE |
5346 | fprintf(f, "%s", CS se); |
5347 | return yield; | |
5348 | } | |
5349 | ||
5350 | ||
5351 | ||
5352 | ||
5353 | ||
5354 | /************************************************* | |
5355 | * Print error for an address * | |
5356 | *************************************************/ | |
5357 | ||
5358 | /* This function is called to print the error information out of an address for | |
5359 | a bounce or a warning message. It tries to format the message reasonably by | |
5360 | introducing newlines. All lines are indented by 4; the initial printing | |
5361 | position must be set before calling. | |
5362 | ||
5363 | This function used always to print the error. Nowadays we want to restrict it | |
5364 | to cases such as LMTP/SMTP errors from a remote host, and errors from :fail: | |
5365 | and filter "fail". We no longer pass other information willy-nilly in bounce | |
5366 | and warning messages. Text in user_message is always output; text in message | |
5367 | only if the af_pass_message flag is set. | |
5368 | ||
5369 | Arguments: | |
5370 | addr the address | |
5371 | f the FILE to print on | |
5372 | t some leading text | |
5373 | ||
5374 | Returns: nothing | |
5375 | */ | |
5376 | ||
5377 | static void | |
5378 | print_address_error(address_item *addr, FILE *f, uschar *t) | |
5379 | { | |
5380 | int count = Ustrlen(t); | |
2ea97746 | 5381 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
420a0d19 | 5382 | |
2ea97746 CE |
5383 | if (!s && !(s = addr->user_message)) |
5384 | return; | |
420a0d19 CE |
5385 | |
5386 | fprintf(f, "\n %s", t); | |
5387 | ||
2ea97746 | 5388 | while (*s) |
420a0d19 CE |
5389 | if (*s == '\\' && s[1] == 'n') |
5390 | { | |
5391 | fprintf(f, "\n "); | |
5392 | s += 2; | |
5393 | count = 0; | |
5394 | } | |
5395 | else | |
5396 | { | |
5397 | fputc(*s, f); | |
5398 | count++; | |
5399 | if (*s++ == ':' && isspace(*s) && count > 45) | |
5400 | { | |
5401 | fprintf(f, "\n "); /* sic (because space follows) */ | |
5402 | count = 0; | |
5403 | } | |
5404 | } | |
420a0d19 CE |
5405 | } |
5406 | ||
5407 | ||
2ea97746 CE |
5408 | /*********************************************************** |
5409 | * Print Diagnostic-Code for an address * | |
5410 | ************************************************************/ | |
5411 | ||
5412 | /* This function is called to print the error information out of an address for | |
5413 | a bounce or a warning message. It tries to format the message reasonably as | |
5414 | required by RFC 3461 by adding a space after each newline | |
5415 | ||
5416 | it uses the same logic as print_address_error() above. if af_pass_message is true | |
5417 | and addr->message is set it uses the remote host answer. if not addr->user_message | |
5418 | is used instead if available. | |
5419 | ||
5420 | Arguments: | |
5421 | addr the address | |
5422 | f the FILE to print on | |
5423 | ||
5424 | Returns: nothing | |
5425 | */ | |
5426 | ||
5427 | static void | |
5428 | print_dsn_diagnostic_code(const address_item *addr, FILE *f) | |
5429 | { | |
5430 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; | |
5431 | ||
5432 | /* af_pass_message and addr->message set ? print remote host answer */ | |
5433 | if (s) | |
5434 | { | |
5435 | DEBUG(D_deliver) | |
5436 | debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message); | |
5437 | ||
5438 | /* search first ": ". we assume to find the remote-MTA answer there */ | |
5439 | if (!(s = Ustrstr(addr->message, ": "))) | |
5440 | return; /* not found, bail out */ | |
5441 | s += 2; /* skip ": " */ | |
5442 | fprintf(f, "Diagnostic-Code: smtp; "); | |
5443 | } | |
5444 | /* no message available. do nothing */ | |
5445 | else return; | |
420a0d19 | 5446 | |
2ea97746 CE |
5447 | while (*s) |
5448 | if (*s == '\\' && s[1] == 'n') | |
5449 | { | |
5450 | fputs("\n ", f); /* as defined in RFC 3461 */ | |
5451 | s += 2; | |
5452 | } | |
5453 | else | |
5454 | fputc(*s++, f); | |
420a0d19 | 5455 | |
2ea97746 CE |
5456 | fputc('\n', f); |
5457 | } | |
420a0d19 CE |
5458 | |
5459 | ||
5460 | /************************************************* | |
5461 | * Check list of addresses for duplication * | |
5462 | *************************************************/ | |
5463 | ||
5464 | /* This function was introduced when the test for duplicate addresses that are | |
5465 | not pipes, files, or autoreplies was moved from the middle of routing to when | |
5466 | routing was complete. That was to fix obscure cases when the routing history | |
5467 | affects the subsequent routing of identical addresses. This function is called | |
5468 | after routing, to check that the final routed addresses are not duplicates. | |
5469 | ||
5470 | If we detect a duplicate, we remember what it is a duplicate of. Note that | |
5471 | pipe, file, and autoreply de-duplication is handled during routing, so we must | |
5472 | leave such "addresses" alone here, as otherwise they will incorrectly be | |
5473 | discarded. | |
5474 | ||
5475 | Argument: address of list anchor | |
5476 | Returns: nothing | |
5477 | */ | |
5478 | ||
5479 | static void | |
5480 | do_duplicate_check(address_item **anchor) | |
5481 | { | |
5482 | address_item *addr; | |
2ea97746 | 5483 | while ((addr = *anchor)) |
420a0d19 CE |
5484 | { |
5485 | tree_node *tnode; | |
5486 | if (testflag(addr, af_pfr)) | |
5487 | { | |
5488 | anchor = &(addr->next); | |
5489 | } | |
2ea97746 | 5490 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
420a0d19 CE |
5491 | { |
5492 | DEBUG(D_deliver|D_route) | |
5493 | debug_printf("%s is a duplicate address: discarded\n", addr->unique); | |
5494 | *anchor = addr->next; | |
5495 | addr->dupof = tnode->data.ptr; | |
5496 | addr->next = addr_duplicate; | |
5497 | addr_duplicate = addr; | |
5498 | } | |
5499 | else | |
5500 | { | |
5501 | tree_add_duplicate(addr->unique, addr); | |
5502 | anchor = &(addr->next); | |
5503 | } | |
5504 | } | |
5505 | } | |
5506 | ||
5507 | ||
5508 | ||
5509 | ||
5510 | /************************************************* | |
5511 | * Deliver one message * | |
5512 | *************************************************/ | |
5513 | ||
5514 | /* This is the function which is called when a message is to be delivered. It | |
5515 | is passed the id of the message. It is possible that the message no longer | |
5516 | exists, if some other process has delivered it, and it is also possible that | |
5517 | the message is being worked on by another process, in which case the data file | |
5518 | will be locked. | |
5519 | ||
5520 | If no delivery is attempted for any of the above reasons, the function returns | |
5521 | DELIVER_NOT_ATTEMPTED. | |
5522 | ||
5523 | If the give_up flag is set true, do not attempt any deliveries, but instead | |
5524 | fail all outstanding addresses and return the message to the sender (or | |
5525 | whoever). | |
5526 | ||
5527 | A delivery operation has a process all to itself; we never deliver more than | |
5528 | one message in the same process. Therefore we needn't worry too much about | |
5529 | store leakage. | |
5530 | ||
2ea97746 CE |
5531 | Liable to be called as root. |
5532 | ||
420a0d19 CE |
5533 | Arguments: |
5534 | id the id of the message to be delivered | |
5535 | forced TRUE if delivery was forced by an administrator; this overrides | |
5536 | retry delays and causes a delivery to be tried regardless | |
5537 | give_up TRUE if an administrator has requested that delivery attempts | |
5538 | be abandoned | |
5539 | ||
5540 | Returns: When the global variable mua_wrapper is FALSE: | |
5541 | DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made | |
5542 | DELIVER_NOT_ATTEMPTED otherwise (see comment above) | |
5543 | When the global variable mua_wrapper is TRUE: | |
5544 | DELIVER_MUA_SUCCEEDED if delivery succeeded | |
5545 | DELIVER_MUA_FAILED if delivery failed | |
5546 | DELIVER_NOT_ATTEMPTED if not attempted (should not occur) | |
5547 | */ | |
5548 | ||
5549 | int | |
5550 | deliver_message(uschar *id, BOOL forced, BOOL give_up) | |
5551 | { | |
5552 | int i, rc; | |
5553 | int final_yield = DELIVER_ATTEMPTED_NORMAL; | |
5554 | time_t now = time(NULL); | |
5555 | address_item *addr_last = NULL; | |
5556 | uschar *filter_message = NULL; | |
420a0d19 CE |
5557 | int process_recipients = RECIP_ACCEPT; |
5558 | open_db dbblock; | |
5559 | open_db *dbm_file; | |
5560 | extern int acl_where; | |
5561 | ||
2ea97746 CE |
5562 | uschar *info = queue_run_pid == (pid_t)0 |
5563 | ? string_sprintf("delivering %s", id) | |
5564 | : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid); | |
420a0d19 CE |
5565 | |
5566 | /* If the D_process_info bit is on, set_process_info() will output debugging | |
5567 | information. If not, we want to show this initial information if D_deliver or | |
5568 | D_queue_run is set or in verbose mode. */ | |
5569 | ||
5570 | set_process_info("%s", info); | |
5571 | ||
2ea97746 CE |
5572 | if ( !(debug_selector & D_process_info) |
5573 | && (debug_selector & (D_deliver|D_queue_run|D_v)) | |
5574 | ) | |
420a0d19 CE |
5575 | debug_printf("%s\n", info); |
5576 | ||
5577 | /* Ensure that we catch any subprocesses that are created. Although Exim | |
5578 | sets SIG_DFL as its initial default, some routes through the code end up | |
5579 | here with it set to SIG_IGN - cases where a non-synchronous delivery process | |
5580 | has been forked, but no re-exec has been done. We use sigaction rather than | |
5581 | plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be | |
5582 | sure it is turned off. (There was a problem on AIX with this.) */ | |
5583 | ||
5584 | #ifdef SA_NOCLDWAIT | |
5585 | { | |
5586 | struct sigaction act; | |
5587 | act.sa_handler = SIG_DFL; | |
5588 | sigemptyset(&(act.sa_mask)); | |
5589 | act.sa_flags = 0; | |
5590 | sigaction(SIGCHLD, &act, NULL); | |
5591 | } | |
5592 | #else | |
5593 | signal(SIGCHLD, SIG_DFL); | |
5594 | #endif | |
5595 | ||
5596 | /* Make the forcing flag available for routers and transports, set up the | |
5597 | global message id field, and initialize the count for returned files and the | |
5598 | message size. This use of strcpy() is OK because the length id is checked when | |
5599 | it is obtained from a command line (the -M or -q options), and otherwise it is | |
5600 | known to be a valid message id. */ | |
5601 | ||
2ea97746 CE |
5602 | if (id != message_id) |
5603 | Ustrcpy(message_id, id); | |
5604 | f.deliver_force = forced; | |
420a0d19 CE |
5605 | return_count = 0; |
5606 | message_size = 0; | |
5607 | ||
5608 | /* Initialize some flags */ | |
5609 | ||
5610 | update_spool = FALSE; | |
5611 | remove_journal = TRUE; | |
5612 | ||
5613 | /* Set a known context for any ACLs we call via expansions */ | |
5614 | acl_where = ACL_WHERE_DELIVERY; | |
5615 | ||
5616 | /* Reset the random number generator, so that if several delivery processes are | |
5617 | started from a queue runner that has already used random numbers (for sorting), | |
5618 | they don't all get the same sequence. */ | |
5619 | ||
5620 | random_seed = 0; | |
5621 | ||
5622 | /* Open and lock the message's data file. Exim locks on this one because the | |
5623 | header file may get replaced as it is re-written during the delivery process. | |
5624 | Any failures cause messages to be written to the log, except for missing files | |
5625 | while queue running - another process probably completed delivery. As part of | |
5626 | opening the data file, message_subdir gets set. */ | |
5627 | ||
2ea97746 | 5628 | if ((deliver_datafile = spool_open_datafile(id)) < 0) |
420a0d19 CE |
5629 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5630 | ||
5631 | /* The value of message_size at this point has been set to the data length, | |
5632 | plus one for the blank line that notionally precedes the data. */ | |
5633 | ||
5634 | /* Now read the contents of the header file, which will set up the headers in | |
5635 | store, and also the list of recipients and the tree of non-recipients and | |
5636 | assorted flags. It updates message_size. If there is a reading or format error, | |
5637 | give up; if the message has been around for sufficiently long, remove it. */ | |
5638 | ||
420a0d19 | 5639 | { |
2ea97746 CE |
5640 | uschar * spoolname = string_sprintf("%s-H", id); |
5641 | if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK) | |
420a0d19 | 5642 | { |
2ea97746 CE |
5643 | if (errno == ERRNO_SPOOLFORMAT) |
5644 | { | |
5645 | struct stat statbuf; | |
5646 | if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""), | |
5647 | &statbuf) == 0) | |
5648 | log_write(0, LOG_MAIN, "Format error in spool file %s: " | |
5649 | "size=" OFF_T_FMT, spoolname, statbuf.st_size); | |
5650 | else | |
5651 | log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname); | |
5652 | } | |
5653 | else | |
5654 | log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname, | |
5655 | strerror(errno)); | |
420a0d19 | 5656 | |
2ea97746 CE |
5657 | /* If we managed to read the envelope data, received_time contains the |
5658 | time the message was received. Otherwise, we can calculate it from the | |
5659 | message id. */ | |
420a0d19 | 5660 | |
2ea97746 CE |
5661 | if (rc != spool_read_hdrerror) |
5662 | { | |
5663 | received_time.tv_sec = received_time.tv_usec = 0; | |
5664 | /*XXX subsec precision?*/ | |
5665 | for (i = 0; i < 6; i++) | |
5666 | received_time.tv_sec = received_time.tv_sec * BASE_62 + tab62[id[i] - '0']; | |
5667 | } | |
420a0d19 | 5668 | |
2ea97746 | 5669 | /* If we've had this malformed message too long, sling it. */ |
420a0d19 | 5670 | |
2ea97746 CE |
5671 | if (now - received_time.tv_sec > keep_malformed) |
5672 | { | |
5673 | Uunlink(spool_fname(US"msglog", message_subdir, id, US"")); | |
5674 | Uunlink(spool_fname(US"input", message_subdir, id, US"-D")); | |
5675 | Uunlink(spool_fname(US"input", message_subdir, id, US"-H")); | |
5676 | Uunlink(spool_fname(US"input", message_subdir, id, US"-J")); | |
5677 | log_write(0, LOG_MAIN, "Message removed because older than %s", | |
5678 | readconf_printtime(keep_malformed)); | |
5679 | } | |
420a0d19 | 5680 | |
2ea97746 CE |
5681 | (void)close(deliver_datafile); |
5682 | deliver_datafile = -1; | |
5683 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5684 | } | |
420a0d19 CE |
5685 | } |
5686 | ||
5687 | /* The spool header file has been read. Look to see if there is an existing | |
5688 | journal file for this message. If there is, it means that a previous delivery | |
5689 | attempt crashed (program or host) before it could update the spool header file. | |
5690 | Read the list of delivered addresses from the journal and add them to the | |
5691 | nonrecipients tree. Then update the spool file. We can leave the journal in | |
5692 | existence, as it will get further successful deliveries added to it in this | |
5693 | run, and it will be deleted if this function gets to its end successfully. | |
5694 | Otherwise it might be needed again. */ | |
5695 | ||
420a0d19 | 5696 | { |
2ea97746 CE |
5697 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
5698 | FILE * jread; | |
5699 | ||
5700 | if ( (journal_fd = Uopen(fname, O_RDWR|O_APPEND | |
5701 | #ifdef O_CLOEXEC | |
5702 | | O_CLOEXEC | |
5703 | #endif | |
5704 | #ifdef O_NOFOLLOW | |
5705 | | O_NOFOLLOW | |
5706 | #endif | |
5707 | , SPOOL_MODE)) >= 0 | |
5708 | && lseek(journal_fd, 0, SEEK_SET) == 0 | |
5709 | && (jread = fdopen(journal_fd, "rb")) | |
5710 | ) | |
420a0d19 | 5711 | { |
2ea97746 CE |
5712 | while (Ufgets(big_buffer, big_buffer_size, jread)) |
5713 | { | |
5714 | int n = Ustrlen(big_buffer); | |
5715 | big_buffer[n-1] = 0; | |
5716 | tree_add_nonrecipient(big_buffer); | |
5717 | DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from " | |
5718 | "journal file\n", big_buffer); | |
5719 | } | |
5720 | rewind(jread); | |
5721 | if ((journal_fd = dup(fileno(jread))) < 0) | |
5722 | journal_fd = fileno(jread); | |
5723 | else | |
5724 | (void) fclose(jread); /* Try to not leak the FILE resource */ | |
5725 | ||
5726 | /* Panic-dies on error */ | |
5727 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
5728 | } | |
5729 | else if (errno != ENOENT) | |
5730 | { | |
5731 | log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: " | |
5732 | "%s", strerror(errno)); | |
5733 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
420a0d19 | 5734 | } |
420a0d19 | 5735 | |
2ea97746 | 5736 | /* A null recipients list indicates some kind of disaster. */ |
420a0d19 | 5737 | |
2ea97746 CE |
5738 | if (!recipients_list) |
5739 | { | |
5740 | (void)close(deliver_datafile); | |
5741 | deliver_datafile = -1; | |
5742 | log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname); | |
5743 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5744 | } | |
420a0d19 CE |
5745 | } |
5746 | ||
5747 | ||
5748 | /* Handle a message that is frozen. There are a number of different things that | |
5749 | can happen, but in the default situation, unless forced, no delivery is | |
5750 | attempted. */ | |
5751 | ||
2ea97746 | 5752 | if (f.deliver_freeze) |
420a0d19 | 5753 | { |
2ea97746 | 5754 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
420a0d19 CE |
5755 | /* Moving to another directory removes the message from Exim's view. Other |
5756 | tools must be used to deal with it. Logging of this action happens in | |
5757 | spool_move_message() and its subfunctions. */ | |
5758 | ||
2ea97746 CE |
5759 | if ( move_frozen_messages |
5760 | && spool_move_message(id, message_subdir, US"", US"F") | |
5761 | ) | |
420a0d19 | 5762 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
2ea97746 | 5763 | #endif |
420a0d19 CE |
5764 | |
5765 | /* For all frozen messages (bounces or not), timeout_frozen_after sets the | |
5766 | maximum time to keep messages that are frozen. Thaw if we reach it, with a | |
5767 | flag causing all recipients to be failed. The time is the age of the | |
5768 | message, not the time since freezing. */ | |
5769 | ||
5770 | if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after) | |
5771 | { | |
5772 | log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after"); | |
5773 | process_recipients = RECIP_FAIL_TIMEOUT; | |
5774 | } | |
5775 | ||
5776 | /* For bounce messages (and others with no sender), thaw if the error message | |
5777 | ignore timer is exceeded. The message will be discarded if this delivery | |
5778 | fails. */ | |
5779 | ||
2ea97746 | 5780 | else if (!*sender_address && message_age >= ignore_bounce_errors_after) |
420a0d19 | 5781 | log_write(0, LOG_MAIN, "Unfrozen by errmsg timer"); |
420a0d19 CE |
5782 | |
5783 | /* If this is a bounce message, or there's no auto thaw, or we haven't | |
5784 | reached the auto thaw time yet, and this delivery is not forced by an admin | |
5785 | user, do not attempt delivery of this message. Note that forced is set for | |
5786 | continuing messages down the same channel, in order to skip load checking and | |
5787 | ignore hold domains, but we don't want unfreezing in that case. */ | |
5788 | ||
5789 | else | |
5790 | { | |
2ea97746 CE |
5791 | if ( ( sender_address[0] == 0 |
5792 | || auto_thaw <= 0 | |
5793 | || now <= deliver_frozen_at + auto_thaw | |
5794 | ) | |
5795 | && ( !forced || !f.deliver_force_thaw | |
5796 | || !f.admin_user || continue_hostname | |
5797 | ) ) | |
420a0d19 CE |
5798 | { |
5799 | (void)close(deliver_datafile); | |
5800 | deliver_datafile = -1; | |
5801 | log_write(L_skip_delivery, LOG_MAIN, "Message is frozen"); | |
5802 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5803 | } | |
5804 | ||
5805 | /* If delivery was forced (by an admin user), assume a manual thaw. | |
5806 | Otherwise it's an auto thaw. */ | |
5807 | ||
5808 | if (forced) | |
5809 | { | |
2ea97746 | 5810 | f.deliver_manual_thaw = TRUE; |
420a0d19 CE |
5811 | log_write(0, LOG_MAIN, "Unfrozen by forced delivery"); |
5812 | } | |
5813 | else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw"); | |
5814 | } | |
5815 | ||
5816 | /* We get here if any of the rules for unfreezing have triggered. */ | |
5817 | ||
2ea97746 | 5818 | f.deliver_freeze = FALSE; |
420a0d19 CE |
5819 | update_spool = TRUE; |
5820 | } | |
5821 | ||
5822 | ||
5823 | /* Open the message log file if we are using them. This records details of | |
5824 | deliveries, deferments, and failures for the benefit of the mail administrator. | |
5825 | The log is not used by exim itself to track the progress of a message; that is | |
5826 | done by rewriting the header spool file. */ | |
5827 | ||
5828 | if (message_logs) | |
5829 | { | |
2ea97746 CE |
5830 | uschar * fname = spool_fname(US"msglog", message_subdir, id, US""); |
5831 | uschar * error; | |
420a0d19 CE |
5832 | int fd; |
5833 | ||
2ea97746 | 5834 | if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0) |
420a0d19 CE |
5835 | { |
5836 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error, | |
2ea97746 | 5837 | fname, strerror(errno)); |
420a0d19 CE |
5838 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5839 | } | |
5840 | ||
5841 | /* Make a C stream out of it. */ | |
5842 | ||
2ea97746 | 5843 | if (!(message_log = fdopen(fd, "a"))) |
420a0d19 CE |
5844 | { |
5845 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s", | |
2ea97746 | 5846 | fname, strerror(errno)); |
420a0d19 CE |
5847 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5848 | } | |
5849 | } | |
5850 | ||
5851 | ||
5852 | /* If asked to give up on a message, log who did it, and set the action for all | |
5853 | the addresses. */ | |
5854 | ||
5855 | if (give_up) | |
5856 | { | |
5857 | struct passwd *pw = getpwuid(real_uid); | |
2ea97746 CE |
5858 | log_write(0, LOG_MAIN, "cancelled by %s", |
5859 | pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid)); | |
420a0d19 CE |
5860 | process_recipients = RECIP_FAIL; |
5861 | } | |
5862 | ||
5863 | /* Otherwise, if there are too many Received: headers, fail all recipients. */ | |
5864 | ||
5865 | else if (received_count > received_headers_max) | |
5866 | process_recipients = RECIP_FAIL_LOOP; | |
5867 | ||
5868 | /* Otherwise, if a system-wide, address-independent message filter is | |
5869 | specified, run it now, except in the case when we are failing all recipients as | |
5870 | a result of timeout_frozen_after. If the system filter yields "delivered", then | |
5871 | ignore the true recipients of the message. Failure of the filter file is | |
5872 | logged, and the delivery attempt fails. */ | |
5873 | ||
2ea97746 | 5874 | else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT) |
420a0d19 CE |
5875 | { |
5876 | int rc; | |
5877 | int filtertype; | |
5878 | ugid_block ugid; | |
5879 | redirect_block redirect; | |
5880 | ||
5881 | if (system_filter_uid_set) | |
5882 | { | |
5883 | ugid.uid = system_filter_uid; | |
5884 | ugid.gid = system_filter_gid; | |
5885 | ugid.uid_set = ugid.gid_set = TRUE; | |
5886 | } | |
5887 | else | |
420a0d19 | 5888 | ugid.uid_set = ugid.gid_set = FALSE; |
420a0d19 CE |
5889 | |
5890 | return_path = sender_address; | |
2ea97746 CE |
5891 | f.enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */ |
5892 | f.system_filtering = TRUE; | |
420a0d19 CE |
5893 | |
5894 | /* Any error in the filter file causes a delivery to be abandoned. */ | |
5895 | ||
5896 | redirect.string = system_filter; | |
5897 | redirect.isfile = TRUE; | |
5898 | redirect.check_owner = redirect.check_group = FALSE; | |
5899 | redirect.owners = NULL; | |
5900 | redirect.owngroups = NULL; | |
5901 | redirect.pw = NULL; | |
5902 | redirect.modemask = 0; | |
5903 | ||
5904 | DEBUG(D_deliver|D_filter) debug_printf("running system filter\n"); | |
5905 | ||
5906 | rc = rda_interpret( | |
5907 | &redirect, /* Where the data is */ | |
5908 | RDO_DEFER | /* Turn on all the enabling options */ | |
5909 | RDO_FAIL | /* Leave off all the disabling options */ | |
5910 | RDO_FILTER | | |
5911 | RDO_FREEZE | | |
5912 | RDO_REALLOG | | |
5913 | RDO_REWRITE, | |
5914 | NULL, /* No :include: restriction (not used in filter) */ | |
5915 | NULL, /* No sieve vacation directory (not sieve!) */ | |
5916 | NULL, /* No sieve enotify mailto owner (not sieve!) */ | |
5917 | NULL, /* No sieve user address (not sieve!) */ | |
5918 | NULL, /* No sieve subaddress (not sieve!) */ | |
5919 | &ugid, /* uid/gid data */ | |
5920 | &addr_new, /* Where to hang generated addresses */ | |
5921 | &filter_message, /* Where to put error message */ | |
5922 | NULL, /* Don't skip syntax errors */ | |
5923 | &filtertype, /* Will always be set to FILTER_EXIM for this call */ | |
5924 | US"system filter"); /* For error messages */ | |
5925 | ||
5926 | DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc); | |
5927 | ||
5928 | if (rc == FF_ERROR || rc == FF_NONEXIST) | |
5929 | { | |
5930 | (void)close(deliver_datafile); | |
5931 | deliver_datafile = -1; | |
5932 | log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s", | |
5933 | string_printing(filter_message)); | |
5934 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5935 | } | |
5936 | ||
5937 | /* Reset things. If the filter message is an empty string, which can happen | |
5938 | for a filter "fail" or "freeze" command with no text, reset it to NULL. */ | |
5939 | ||
2ea97746 CE |
5940 | f.system_filtering = FALSE; |
5941 | f.enable_dollar_recipients = FALSE; | |
5942 | if (filter_message && filter_message[0] == 0) filter_message = NULL; | |
420a0d19 CE |
5943 | |
5944 | /* Save the values of the system filter variables so that user filters | |
5945 | can use them. */ | |
5946 | ||
5947 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); | |
5948 | ||
5949 | /* The filter can request that delivery of the original addresses be | |
5950 | deferred. */ | |
5951 | ||
5952 | if (rc == FF_DEFER) | |
5953 | { | |
5954 | process_recipients = RECIP_DEFER; | |
5955 | deliver_msglog("Delivery deferred by system filter\n"); | |
5956 | log_write(0, LOG_MAIN, "Delivery deferred by system filter"); | |
5957 | } | |
5958 | ||
5959 | /* The filter can request that a message be frozen, but this does not | |
5960 | take place if the message has been manually thawed. In that case, we must | |
5961 | unset "delivered", which is forced by the "freeze" command to make -bF | |
5962 | work properly. */ | |
5963 | ||
2ea97746 | 5964 | else if (rc == FF_FREEZE && !f.deliver_manual_thaw) |
420a0d19 | 5965 | { |
2ea97746 | 5966 | f.deliver_freeze = TRUE; |
420a0d19 CE |
5967 | deliver_frozen_at = time(NULL); |
5968 | process_recipients = RECIP_DEFER; | |
5969 | frozen_info = string_sprintf(" by the system filter%s%s", | |
2ea97746 CE |
5970 | filter_message ? US": " : US"", |
5971 | filter_message ? filter_message : US""); | |
420a0d19 CE |
5972 | } |
5973 | ||
5974 | /* The filter can request that a message be failed. The error message may be | |
5975 | quite long - it is sent back to the sender in the bounce - but we don't want | |
5976 | to fill up the log with repetitions of it. If it starts with << then the text | |
5977 | between << and >> is written to the log, with the rest left for the bounce | |
5978 | message. */ | |
5979 | ||
5980 | else if (rc == FF_FAIL) | |
5981 | { | |
5982 | uschar *colon = US""; | |
5983 | uschar *logmsg = US""; | |
5984 | int loglen = 0; | |
5985 | ||
5986 | process_recipients = RECIP_FAIL_FILTER; | |
5987 | ||
2ea97746 | 5988 | if (filter_message) |
420a0d19 CE |
5989 | { |
5990 | uschar *logend; | |
5991 | colon = US": "; | |
2ea97746 CE |
5992 | if ( filter_message[0] == '<' |
5993 | && filter_message[1] == '<' | |
5994 | && (logend = Ustrstr(filter_message, ">>")) | |
5995 | ) | |
420a0d19 CE |
5996 | { |
5997 | logmsg = filter_message + 2; | |
5998 | loglen = logend - logmsg; | |
5999 | filter_message = logend + 2; | |
6000 | if (filter_message[0] == 0) filter_message = NULL; | |
6001 | } | |
6002 | else | |
6003 | { | |
6004 | logmsg = filter_message; | |
6005 | loglen = Ustrlen(filter_message); | |
6006 | } | |
6007 | } | |
6008 | ||
6009 | log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen, | |
6010 | logmsg); | |
6011 | } | |
6012 | ||
6013 | /* Delivery can be restricted only to those recipients (if any) that the | |
6014 | filter specified. */ | |
6015 | ||
6016 | else if (rc == FF_DELIVERED) | |
6017 | { | |
6018 | process_recipients = RECIP_IGNORE; | |
2ea97746 | 6019 | if (addr_new) |
420a0d19 | 6020 | log_write(0, LOG_MAIN, "original recipients ignored (system filter)"); |
2ea97746 CE |
6021 | else |
6022 | log_write(0, LOG_MAIN, "=> discarded (system filter)"); | |
420a0d19 CE |
6023 | } |
6024 | ||
6025 | /* If any new addresses were created by the filter, fake up a "parent" | |
6026 | for them. This is necessary for pipes, etc., which are expected to have | |
6027 | parents, and it also gives some sensible logging for others. Allow | |
6028 | pipes, files, and autoreplies, and run them as the filter uid if set, | |
6029 | otherwise as the current uid. */ | |
6030 | ||
2ea97746 | 6031 | if (addr_new) |
420a0d19 CE |
6032 | { |
6033 | int uid = (system_filter_uid_set)? system_filter_uid : geteuid(); | |
6034 | int gid = (system_filter_gid_set)? system_filter_gid : getegid(); | |
6035 | ||
6036 | /* The text "system-filter" is tested in transport_set_up_command() and in | |
6037 | set_up_shell_command() in the pipe transport, to enable them to permit | |
6038 | $recipients, so don't change it here without also changing it there. */ | |
6039 | ||
6040 | address_item *p = addr_new; | |
6041 | address_item *parent = deliver_make_addr(US"system-filter", FALSE); | |
6042 | ||
6043 | parent->domain = string_copylc(qualify_domain_recipient); | |
6044 | parent->local_part = US"system-filter"; | |
6045 | ||
6046 | /* As part of this loop, we arrange for addr_last to end up pointing | |
6047 | at the final address. This is used if we go on to add addresses for the | |
6048 | original recipients. */ | |
6049 | ||
2ea97746 | 6050 | while (p) |
420a0d19 | 6051 | { |
2ea97746 | 6052 | if (parent->child_count == USHRT_MAX) |
420a0d19 | 6053 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more " |
2ea97746 | 6054 | "than %d delivery addresses", USHRT_MAX); |
420a0d19 CE |
6055 | parent->child_count++; |
6056 | p->parent = parent; | |
6057 | ||
6058 | if (testflag(p, af_pfr)) | |
6059 | { | |
6060 | uschar *tpname; | |
6061 | uschar *type; | |
6062 | p->uid = uid; | |
6063 | p->gid = gid; | |
2ea97746 CE |
6064 | setflag(p, af_uid_set); |
6065 | setflag(p, af_gid_set); | |
6066 | setflag(p, af_allow_file); | |
6067 | setflag(p, af_allow_pipe); | |
6068 | setflag(p, af_allow_reply); | |
420a0d19 CE |
6069 | |
6070 | /* Find the name of the system filter's appropriate pfr transport */ | |
6071 | ||
6072 | if (p->address[0] == '|') | |
6073 | { | |
6074 | type = US"pipe"; | |
6075 | tpname = system_filter_pipe_transport; | |
6076 | address_pipe = p->address; | |
6077 | } | |
6078 | else if (p->address[0] == '>') | |
6079 | { | |
6080 | type = US"reply"; | |
6081 | tpname = system_filter_reply_transport; | |
6082 | } | |
6083 | else | |
6084 | { | |
6085 | if (p->address[Ustrlen(p->address)-1] == '/') | |
6086 | { | |
6087 | type = US"directory"; | |
6088 | tpname = system_filter_directory_transport; | |
6089 | } | |
6090 | else | |
6091 | { | |
6092 | type = US"file"; | |
6093 | tpname = system_filter_file_transport; | |
6094 | } | |
6095 | address_file = p->address; | |
6096 | } | |
6097 | ||
6098 | /* Now find the actual transport, first expanding the name. We have | |
6099 | set address_file or address_pipe above. */ | |
6100 | ||
2ea97746 | 6101 | if (tpname) |
420a0d19 CE |
6102 | { |
6103 | uschar *tmp = expand_string(tpname); | |
6104 | address_file = address_pipe = NULL; | |
2ea97746 | 6105 | if (!tmp) |
420a0d19 CE |
6106 | p->message = string_sprintf("failed to expand \"%s\" as a " |
6107 | "system filter transport name", tpname); | |
6108 | tpname = tmp; | |
6109 | } | |
6110 | else | |
420a0d19 CE |
6111 | p->message = string_sprintf("system_filter_%s_transport is unset", |
6112 | type); | |
420a0d19 | 6113 | |
2ea97746 | 6114 | if (tpname) |
420a0d19 CE |
6115 | { |
6116 | transport_instance *tp; | |
2ea97746 | 6117 | for (tp = transports; tp; tp = tp->next) |
420a0d19 CE |
6118 | if (Ustrcmp(tp->name, tpname) == 0) |
6119 | { | |
6120 | p->transport = tp; | |
6121 | break; | |
6122 | } | |
2ea97746 | 6123 | if (!tp) |
420a0d19 CE |
6124 | p->message = string_sprintf("failed to find \"%s\" transport " |
6125 | "for system filter delivery", tpname); | |
6126 | } | |
6127 | ||
6128 | /* If we couldn't set up a transport, defer the delivery, putting the | |
6129 | error on the panic log as well as the main log. */ | |
6130 | ||
2ea97746 | 6131 | if (!p->transport) |
420a0d19 CE |
6132 | { |
6133 | address_item *badp = p; | |
6134 | p = p->next; | |
2ea97746 | 6135 | if (!addr_last) addr_new = p; else addr_last->next = p; |
420a0d19 | 6136 | badp->local_part = badp->address; /* Needed for log line */ |
2ea97746 | 6137 | post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6138 | continue; |
6139 | } | |
6140 | } /* End of pfr handling */ | |
6141 | ||
6142 | /* Either a non-pfr delivery, or we found a transport */ | |
6143 | ||
6144 | DEBUG(D_deliver|D_filter) | |
6145 | debug_printf("system filter added %s\n", p->address); | |
6146 | ||
6147 | addr_last = p; | |
6148 | p = p->next; | |
6149 | } /* Loop through all addr_new addresses */ | |
6150 | } | |
6151 | } | |
6152 | ||
6153 | ||
6154 | /* Scan the recipients list, and for every one that is not in the non- | |
6155 | recipients tree, add an addr item to the chain of new addresses. If the pno | |
6156 | value is non-negative, we must set the onetime parent from it. This which | |
6157 | points to the relevant entry in the recipients list. | |
6158 | ||
6159 | This processing can be altered by the setting of the process_recipients | |
6160 | variable, which is changed if recipients are to be ignored, failed, or | |
6161 | deferred. This can happen as a result of system filter activity, or if the -Mg | |
6162 | option is used to fail all of them. | |
6163 | ||
6164 | Duplicate addresses are handled later by a different tree structure; we can't | |
6165 | just extend the non-recipients tree, because that will be re-written to the | |
6166 | spool if the message is deferred, and in any case there are casing | |
6167 | complications for local addresses. */ | |
6168 | ||
6169 | if (process_recipients != RECIP_IGNORE) | |
420a0d19 | 6170 | for (i = 0; i < recipients_count; i++) |
2ea97746 | 6171 | if (!tree_search(tree_nonrecipients, recipients_list[i].address)) |
420a0d19 CE |
6172 | { |
6173 | recipient_item *r = recipients_list + i; | |
6174 | address_item *new = deliver_make_addr(r->address, FALSE); | |
2ea97746 CE |
6175 | new->prop.errors_address = r->errors_to; |
6176 | #ifdef SUPPORT_I18N | |
6177 | if ((new->prop.utf8_msg = message_smtputf8)) | |
6178 | { | |
6179 | new->prop.utf8_downcvt = message_utf8_downconvert == 1; | |
6180 | new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1; | |
6181 | DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n", | |
6182 | new->prop.utf8_downcvt ? "yes" | |
6183 | : new->prop.utf8_downcvt_maybe ? "ifneeded" | |
6184 | : "no"); | |
6185 | } | |
6186 | #endif | |
420a0d19 CE |
6187 | |
6188 | if (r->pno >= 0) | |
6189 | new->onetime_parent = recipients_list[r->pno].address; | |
6190 | ||
2ea97746 | 6191 | /* If DSN support is enabled, set the dsn flags and the original receipt |
420a0d19 CE |
6192 | to be passed on to other DSN enabled MTAs */ |
6193 | new->dsn_flags = r->dsn_flags & rf_dsnflags; | |
6194 | new->dsn_orcpt = r->orcpt; | |
2ea97746 CE |
6195 | DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n", |
6196 | new->dsn_orcpt ? new->dsn_orcpt : US"", new->dsn_flags); | |
420a0d19 CE |
6197 | |
6198 | switch (process_recipients) | |
6199 | { | |
6200 | /* RECIP_DEFER is set when a system filter freezes a message. */ | |
6201 | ||
6202 | case RECIP_DEFER: | |
2ea97746 CE |
6203 | new->next = addr_defer; |
6204 | addr_defer = new; | |
6205 | break; | |
420a0d19 CE |
6206 | |
6207 | ||
6208 | /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail" | |
6209 | command. */ | |
6210 | ||
6211 | case RECIP_FAIL_FILTER: | |
2ea97746 CE |
6212 | new->message = |
6213 | filter_message ? filter_message : US"delivery cancelled"; | |
6214 | setflag(new, af_pass_message); | |
6215 | goto RECIP_QUEUE_FAILED; /* below */ | |
420a0d19 CE |
6216 | |
6217 | ||
6218 | /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older | |
6219 | than the value in timeout_frozen_after. Treat non-bounce messages | |
6220 | similarly to -Mg; for bounce messages we just want to discard, so | |
6221 | don't put the address on the failed list. The timeout has already | |
6222 | been logged. */ | |
6223 | ||
6224 | case RECIP_FAIL_TIMEOUT: | |
2ea97746 CE |
6225 | new->message = US"delivery cancelled; message timed out"; |
6226 | goto RECIP_QUEUE_FAILED; /* below */ | |
420a0d19 CE |
6227 | |
6228 | ||
6229 | /* RECIP_FAIL is set when -Mg has been used. */ | |
6230 | ||
6231 | case RECIP_FAIL: | |
2ea97746 CE |
6232 | new->message = US"delivery cancelled by administrator"; |
6233 | /* Fall through */ | |
420a0d19 CE |
6234 | |
6235 | /* Common code for the failure cases above. If this is not a bounce | |
6236 | message, put the address on the failed list so that it is used to | |
6237 | create a bounce. Otherwise do nothing - this just discards the address. | |
6238 | The incident has already been logged. */ | |
6239 | ||
6240 | RECIP_QUEUE_FAILED: | |
2ea97746 CE |
6241 | if (sender_address[0]) |
6242 | { | |
6243 | new->next = addr_failed; | |
6244 | addr_failed = new; | |
6245 | } | |
420a0d19 CE |
6246 | break; |
6247 | ||
6248 | ||
6249 | /* RECIP_FAIL_LOOP is set when there are too many Received: headers | |
6250 | in the message. Process each address as a routing failure; if this | |
6251 | is a bounce message, it will get frozen. */ | |
6252 | ||
6253 | case RECIP_FAIL_LOOP: | |
2ea97746 CE |
6254 | new->message = US"Too many \"Received\" headers - suspected mail loop"; |
6255 | post_process_one(new, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); | |
6256 | break; | |
420a0d19 CE |
6257 | |
6258 | ||
6259 | /* Value should be RECIP_ACCEPT; take this as the safe default. */ | |
6260 | ||
6261 | default: | |
2ea97746 CE |
6262 | if (!addr_new) addr_new = new; else addr_last->next = new; |
6263 | addr_last = new; | |
6264 | break; | |
420a0d19 | 6265 | } |
2ea97746 CE |
6266 | |
6267 | #ifndef DISABLE_EVENT | |
6268 | if (process_recipients != RECIP_ACCEPT) | |
6269 | { | |
6270 | uschar * save_local = deliver_localpart; | |
6271 | const uschar * save_domain = deliver_domain; | |
6272 | uschar * addr = new->address, * errmsg = NULL; | |
6273 | int start, end, dom; | |
6274 | ||
6275 | if (!parse_extract_address(addr, &errmsg, &start, &end, &dom, TRUE)) | |
6276 | log_write(0, LOG_MAIN|LOG_PANIC, | |
6277 | "failed to parse address '%.100s': %s\n", addr, errmsg); | |
6278 | else | |
6279 | { | |
6280 | deliver_localpart = | |
6281 | string_copyn(addr+start, dom ? (dom-1) - start : end - start); | |
6282 | deliver_domain = dom ? CUS string_copyn(addr+dom, end - dom) : CUS""; | |
6283 | ||
6284 | event_raise(event_action, US"msg:fail:internal", new->message); | |
6285 | ||
6286 | deliver_localpart = save_local; | |
6287 | deliver_domain = save_domain; | |
6288 | } | |
6289 | } | |
6290 | #endif | |
420a0d19 | 6291 | } |
420a0d19 CE |
6292 | |
6293 | DEBUG(D_deliver) | |
6294 | { | |
2ea97746 | 6295 | address_item *p; |
420a0d19 | 6296 | debug_printf("Delivery address list:\n"); |
2ea97746 CE |
6297 | for (p = addr_new; p; p = p->next) |
6298 | debug_printf(" %s %s\n", p->address, | |
6299 | p->onetime_parent ? p->onetime_parent : US""); | |
420a0d19 CE |
6300 | } |
6301 | ||
6302 | /* Set up the buffers used for copying over the file when delivering. */ | |
6303 | ||
6304 | deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE); | |
6305 | deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE); | |
6306 | ||
6307 | ||
6308 | ||
6309 | /* Until there are no more new addresses, handle each one as follows: | |
6310 | ||
6311 | . If this is a generated address (indicated by the presence of a parent | |
6312 | pointer) then check to see whether it is a pipe, file, or autoreply, and | |
6313 | if so, handle it directly here. The router that produced the address will | |
6314 | have set the allow flags into the address, and also set the uid/gid required. | |
6315 | Having the routers generate new addresses and then checking them here at | |
6316 | the outer level is tidier than making each router do the checking, and | |
6317 | means that routers don't need access to the failed address queue. | |
6318 | ||
6319 | . Break up the address into local part and domain, and make lowercased | |
6320 | versions of these strings. We also make unquoted versions of the local part. | |
6321 | ||
6322 | . Handle the percent hack for those domains for which it is valid. | |
6323 | ||
6324 | . For child addresses, determine if any of the parents have the same address. | |
6325 | If so, generate a different string for previous delivery checking. Without | |
6326 | this code, if the address spqr generates spqr via a forward or alias file, | |
6327 | delivery of the generated spqr stops further attempts at the top level spqr, | |
6328 | which is not what is wanted - it may have generated other addresses. | |
6329 | ||
6330 | . Check on the retry database to see if routing was previously deferred, but | |
6331 | only if in a queue run. Addresses that are to be routed are put on the | |
6332 | addr_route chain. Addresses that are to be deferred are put on the | |
6333 | addr_defer chain. We do all the checking first, so as not to keep the | |
6334 | retry database open any longer than necessary. | |
6335 | ||
6336 | . Now we run the addresses through the routers. A router may put the address | |
6337 | on either the addr_local or the addr_remote chain for local or remote | |
6338 | delivery, respectively, or put it on the addr_failed chain if it is | |
6339 | undeliveable, or it may generate child addresses and put them on the | |
6340 | addr_new chain, or it may defer an address. All the chain anchors are | |
6341 | passed as arguments so that the routers can be called for verification | |
6342 | purposes as well. | |
6343 | ||
6344 | . If new addresses have been generated by the routers, da capo. | |
6345 | */ | |
6346 | ||
2ea97746 CE |
6347 | f.header_rewritten = FALSE; /* No headers rewritten yet */ |
6348 | while (addr_new) /* Loop until all addresses dealt with */ | |
420a0d19 CE |
6349 | { |
6350 | address_item *addr, *parent; | |
420a0d19 CE |
6351 | |
6352 | /* Failure to open the retry database is treated the same as if it does | |
6353 | not exist. In both cases, dbm_file is NULL. */ | |
6354 | ||
2ea97746 | 6355 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
420a0d19 CE |
6356 | DEBUG(D_deliver|D_retry|D_route|D_hints_lookup) |
6357 | debug_printf("no retry data available\n"); | |
420a0d19 CE |
6358 | |
6359 | /* Scan the current batch of new addresses, to handle pipes, files and | |
6360 | autoreplies, and determine which others are ready for routing. */ | |
6361 | ||
2ea97746 | 6362 | while (addr_new) |
420a0d19 CE |
6363 | { |
6364 | int rc; | |
6365 | uschar *p; | |
6366 | tree_node *tnode; | |
6367 | dbdata_retry *domain_retry_record; | |
6368 | dbdata_retry *address_retry_record; | |
6369 | ||
6370 | addr = addr_new; | |
6371 | addr_new = addr->next; | |
6372 | ||
6373 | DEBUG(D_deliver|D_retry|D_route) | |
6374 | { | |
6375 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); | |
6376 | debug_printf("Considering: %s\n", addr->address); | |
6377 | } | |
6378 | ||
6379 | /* Handle generated address that is a pipe or a file or an autoreply. */ | |
6380 | ||
6381 | if (testflag(addr, af_pfr)) | |
6382 | { | |
6383 | /* If an autoreply in a filter could not generate a syntactically valid | |
6384 | address, give up forthwith. Set af_ignore_error so that we don't try to | |
6385 | generate a bounce. */ | |
6386 | ||
6387 | if (testflag(addr, af_bad_reply)) | |
6388 | { | |
6389 | addr->basic_errno = ERRNO_BADADDRESS2; | |
6390 | addr->local_part = addr->address; | |
6391 | addr->message = | |
6392 | US"filter autoreply generated syntactically invalid recipient"; | |
2ea97746 CE |
6393 | addr->prop.ignore_error = TRUE; |
6394 | (void) post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); | |
420a0d19 CE |
6395 | continue; /* with the next new address */ |
6396 | } | |
6397 | ||
6398 | /* If two different users specify delivery to the same pipe or file or | |
6399 | autoreply, there should be two different deliveries, so build a unique | |
6400 | string that incorporates the original address, and use this for | |
6401 | duplicate testing and recording delivery, and also for retrying. */ | |
6402 | ||
6403 | addr->unique = | |
6404 | string_sprintf("%s:%s", addr->address, addr->parent->unique + | |
6405 | (testflag(addr->parent, af_homonym)? 3:0)); | |
6406 | ||
6407 | addr->address_retry_key = addr->domain_retry_key = | |
6408 | string_sprintf("T:%s", addr->unique); | |
6409 | ||
6410 | /* If a filter file specifies two deliveries to the same pipe or file, | |
6411 | we want to de-duplicate, but this is probably not wanted for two mail | |
6412 | commands to the same address, where probably both should be delivered. | |
6413 | So, we have to invent a different unique string in that case. Just | |
6414 | keep piling '>' characters on the front. */ | |
6415 | ||
6416 | if (addr->address[0] == '>') | |
6417 | { | |
2ea97746 | 6418 | while (tree_search(tree_duplicates, addr->unique)) |
420a0d19 CE |
6419 | addr->unique = string_sprintf(">%s", addr->unique); |
6420 | } | |
6421 | ||
2ea97746 | 6422 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
420a0d19 CE |
6423 | { |
6424 | DEBUG(D_deliver|D_route) | |
6425 | debug_printf("%s is a duplicate address: discarded\n", addr->address); | |
6426 | addr->dupof = tnode->data.ptr; | |
6427 | addr->next = addr_duplicate; | |
6428 | addr_duplicate = addr; | |
6429 | continue; | |
6430 | } | |
6431 | ||
6432 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6433 | ||
6434 | /* Check for previous delivery */ | |
6435 | ||
2ea97746 | 6436 | if (tree_search(tree_nonrecipients, addr->unique)) |
420a0d19 CE |
6437 | { |
6438 | DEBUG(D_deliver|D_route) | |
6439 | debug_printf("%s was previously delivered: discarded\n", addr->address); | |
6440 | child_done(addr, tod_stamp(tod_log)); | |
6441 | continue; | |
6442 | } | |
6443 | ||
6444 | /* Save for checking future duplicates */ | |
6445 | ||
6446 | tree_add_duplicate(addr->unique, addr); | |
6447 | ||
6448 | /* Set local part and domain */ | |
6449 | ||
6450 | addr->local_part = addr->address; | |
6451 | addr->domain = addr->parent->domain; | |
6452 | ||
6453 | /* Ensure that the delivery is permitted. */ | |
6454 | ||
6455 | if (testflag(addr, af_file)) | |
6456 | { | |
6457 | if (!testflag(addr, af_allow_file)) | |
6458 | { | |
6459 | addr->basic_errno = ERRNO_FORBIDFILE; | |
6460 | addr->message = US"delivery to file forbidden"; | |
2ea97746 | 6461 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6462 | continue; /* with the next new address */ |
6463 | } | |
6464 | } | |
6465 | else if (addr->address[0] == '|') | |
6466 | { | |
6467 | if (!testflag(addr, af_allow_pipe)) | |
6468 | { | |
6469 | addr->basic_errno = ERRNO_FORBIDPIPE; | |
6470 | addr->message = US"delivery to pipe forbidden"; | |
2ea97746 | 6471 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6472 | continue; /* with the next new address */ |
6473 | } | |
6474 | } | |
6475 | else if (!testflag(addr, af_allow_reply)) | |
6476 | { | |
6477 | addr->basic_errno = ERRNO_FORBIDREPLY; | |
6478 | addr->message = US"autoreply forbidden"; | |
2ea97746 | 6479 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6480 | continue; /* with the next new address */ |
6481 | } | |
6482 | ||
6483 | /* If the errno field is already set to BADTRANSPORT, it indicates | |
6484 | failure to expand a transport string, or find the associated transport, | |
6485 | or an unset transport when one is required. Leave this test till now so | |
6486 | that the forbid errors are given in preference. */ | |
6487 | ||
6488 | if (addr->basic_errno == ERRNO_BADTRANSPORT) | |
6489 | { | |
2ea97746 | 6490 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6491 | continue; |
6492 | } | |
6493 | ||
6494 | /* Treat /dev/null as a special case and abandon the delivery. This | |
6495 | avoids having to specify a uid on the transport just for this case. | |
6496 | Arrange for the transport name to be logged as "**bypassed**". */ | |
6497 | ||
6498 | if (Ustrcmp(addr->address, "/dev/null") == 0) | |
6499 | { | |
6500 | uschar *save = addr->transport->name; | |
6501 | addr->transport->name = US"**bypassed**"; | |
2ea97746 | 6502 | (void)post_process_one(addr, OK, LOG_MAIN, EXIM_DTYPE_TRANSPORT, '='); |
420a0d19 CE |
6503 | addr->transport->name = save; |
6504 | continue; /* with the next new address */ | |
6505 | } | |
6506 | ||
6507 | /* Pipe, file, or autoreply delivery is to go ahead as a normal local | |
6508 | delivery. */ | |
6509 | ||
6510 | DEBUG(D_deliver|D_route) | |
6511 | debug_printf("queued for %s transport\n", addr->transport->name); | |
6512 | addr->next = addr_local; | |
6513 | addr_local = addr; | |
6514 | continue; /* with the next new address */ | |
6515 | } | |
6516 | ||
6517 | /* Handle normal addresses. First, split up into local part and domain, | |
6518 | handling the %-hack if necessary. There is the possibility of a defer from | |
6519 | a lookup in percent_hack_domains. */ | |
6520 | ||
6521 | if ((rc = deliver_split_address(addr)) == DEFER) | |
6522 | { | |
6523 | addr->message = US"cannot check percent_hack_domains"; | |
6524 | addr->basic_errno = ERRNO_LISTDEFER; | |
2ea97746 | 6525 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
420a0d19 CE |
6526 | continue; |
6527 | } | |
6528 | ||
6529 | /* Check to see if the domain is held. If so, proceed only if the | |
6530 | delivery was forced by hand. */ | |
6531 | ||
6532 | deliver_domain = addr->domain; /* set $domain */ | |
2ea97746 CE |
6533 | if ( !forced && hold_domains |
6534 | && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0, | |
420a0d19 | 6535 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, |
2ea97746 CE |
6536 | NULL)) != FAIL |
6537 | ) | |
420a0d19 CE |
6538 | { |
6539 | if (rc == DEFER) | |
6540 | { | |
6541 | addr->message = US"hold_domains lookup deferred"; | |
6542 | addr->basic_errno = ERRNO_LISTDEFER; | |
6543 | } | |
6544 | else | |
6545 | { | |
6546 | addr->message = US"domain is held"; | |
6547 | addr->basic_errno = ERRNO_HELD; | |
6548 | } | |
2ea97746 | 6549 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
420a0d19 CE |
6550 | continue; |
6551 | } | |
6552 | ||
6553 | /* Now we can check for duplicates and previously delivered addresses. In | |
6554 | order to do this, we have to generate a "unique" value for each address, | |
6555 | because there may be identical actual addresses in a line of descendents. | |
6556 | The "unique" field is initialized to the same value as the "address" field, | |
6557 | but gets changed here to cope with identically-named descendents. */ | |
6558 | ||
2ea97746 | 6559 | for (parent = addr->parent; parent; parent = parent->parent) |
420a0d19 CE |
6560 | if (strcmpic(addr->address, parent->address) == 0) break; |
6561 | ||
6562 | /* If there's an ancestor with the same name, set the homonym flag. This | |
6563 | influences how deliveries are recorded. Then add a prefix on the front of | |
6564 | the unique address. We use \n\ where n starts at 0 and increases each time. | |
6565 | It is unlikely to pass 9, but if it does, it may look odd but will still | |
6566 | work. This means that siblings or cousins with the same names are treated | |
6567 | as duplicates, which is what we want. */ | |
6568 | ||
2ea97746 | 6569 | if (parent) |
420a0d19 CE |
6570 | { |
6571 | setflag(addr, af_homonym); | |
6572 | if (parent->unique[0] != '\\') | |
6573 | addr->unique = string_sprintf("\\0\\%s", addr->address); | |
6574 | else | |
6575 | addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1, | |
6576 | addr->address); | |
6577 | } | |
6578 | ||
6579 | /* Ensure that the domain in the unique field is lower cased, because | |
6580 | domains are always handled caselessly. */ | |
6581 | ||
6582 | p = Ustrrchr(addr->unique, '@'); | |
6583 | while (*p != 0) { *p = tolower(*p); p++; } | |
6584 | ||
6585 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6586 | ||
2ea97746 | 6587 | if (tree_search(tree_nonrecipients, addr->unique)) |
420a0d19 CE |
6588 | { |
6589 | DEBUG(D_deliver|D_route) | |
6590 | debug_printf("%s was previously delivered: discarded\n", addr->unique); | |
6591 | child_done(addr, tod_stamp(tod_log)); | |
6592 | continue; | |
6593 | } | |
6594 | ||
6595 | /* Get the routing retry status, saving the two retry keys (with and | |
6596 | without the local part) for subsequent use. If there is no retry record for | |
6597 | the standard address routing retry key, we look for the same key with the | |
6598 | sender attached, because this form is used by the smtp transport after a | |
6599 | 4xx response to RCPT when address_retry_include_sender is true. */ | |
6600 | ||
6601 | addr->domain_retry_key = string_sprintf("R:%s", addr->domain); | |
6602 | addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part, | |
6603 | addr->domain); | |
6604 | ||
2ea97746 | 6605 | if (dbm_file) |
420a0d19 CE |
6606 | { |
6607 | domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key); | |
2ea97746 CE |
6608 | if ( domain_retry_record |
6609 | && now - domain_retry_record->time_stamp > retry_data_expire | |
6610 | ) | |
6611 | { | |
6612 | DEBUG(D_deliver|D_retry) | |
6613 | debug_printf("domain retry record present but expired\n"); | |
420a0d19 | 6614 | domain_retry_record = NULL; /* Ignore if too old */ |
2ea97746 | 6615 | } |
420a0d19 CE |
6616 | |
6617 | address_retry_record = dbfn_read(dbm_file, addr->address_retry_key); | |
2ea97746 CE |
6618 | if ( address_retry_record |
6619 | && now - address_retry_record->time_stamp > retry_data_expire | |
6620 | ) | |
6621 | { | |
6622 | DEBUG(D_deliver|D_retry) | |
6623 | debug_printf("address retry record present but expired\n"); | |
420a0d19 | 6624 | address_retry_record = NULL; /* Ignore if too old */ |
2ea97746 | 6625 | } |
420a0d19 | 6626 | |
2ea97746 | 6627 | if (!address_retry_record) |
420a0d19 CE |
6628 | { |
6629 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, | |
6630 | sender_address); | |
6631 | address_retry_record = dbfn_read(dbm_file, altkey); | |
2ea97746 CE |
6632 | if ( address_retry_record |
6633 | && now - address_retry_record->time_stamp > retry_data_expire) | |
6634 | { | |
6635 | DEBUG(D_deliver|D_retry) | |
6636 | debug_printf("address<sender> retry record present but expired\n"); | |
420a0d19 | 6637 | address_retry_record = NULL; /* Ignore if too old */ |
2ea97746 | 6638 | } |
420a0d19 CE |
6639 | } |
6640 | } | |
2ea97746 CE |
6641 | else |
6642 | domain_retry_record = address_retry_record = NULL; | |
420a0d19 CE |
6643 | |
6644 | DEBUG(D_deliver|D_retry) | |
6645 | { | |
2ea97746 CE |
6646 | if (!domain_retry_record) |
6647 | debug_printf("no domain retry record\n"); | |
6648 | else | |
6649 | debug_printf("have domain retry record; next_try = now%+d\n", | |
6650 | f.running_in_test_harness ? 0 : | |
6651 | (int)(domain_retry_record->next_try - now)); | |
6652 | ||
6653 | if (!address_retry_record) | |
6654 | debug_printf("no address retry record\n"); | |
6655 | else | |
6656 | debug_printf("have address retry record; next_try = now%+d\n", | |
6657 | f.running_in_test_harness ? 0 : | |
6658 | (int)(address_retry_record->next_try - now)); | |
420a0d19 CE |
6659 | } |
6660 | ||
6661 | /* If we are sending a message down an existing SMTP connection, we must | |
6662 | assume that the message which created the connection managed to route | |
6663 | an address to that connection. We do not want to run the risk of taking | |
6664 | a long time over routing here, because if we do, the server at the other | |
6665 | end of the connection may time it out. This is especially true for messages | |
6666 | with lots of addresses. For this kind of delivery, queue_running is not | |
6667 | set, so we would normally route all addresses. We take a pragmatic approach | |
6668 | and defer routing any addresses that have any kind of domain retry record. | |
6669 | That is, we don't even look at their retry times. It doesn't matter if this | |
6670 | doesn't work occasionally. This is all just an optimization, after all. | |
6671 | ||
6672 | The reason for not doing the same for address retries is that they normally | |
6673 | arise from 4xx responses, not DNS timeouts. */ | |
6674 | ||
2ea97746 | 6675 | if (continue_hostname && domain_retry_record) |
420a0d19 CE |
6676 | { |
6677 | addr->message = US"reusing SMTP connection skips previous routing defer"; | |
6678 | addr->basic_errno = ERRNO_RRETRY; | |
2ea97746 CE |
6679 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
6680 | ||
6681 | addr->message = domain_retry_record->text; | |
6682 | setflag(addr, af_pass_message); | |
420a0d19 CE |
6683 | } |
6684 | ||
6685 | /* If we are in a queue run, defer routing unless there is no retry data or | |
6686 | we've passed the next retry time, or this message is forced. In other | |
6687 | words, ignore retry data when not in a queue run. | |
6688 | ||
6689 | However, if the domain retry time has expired, always allow the routing | |
6690 | attempt. If it fails again, the address will be failed. This ensures that | |
6691 | each address is routed at least once, even after long-term routing | |
6692 | failures. | |
6693 | ||
6694 | If there is an address retry, check that too; just wait for the next | |
6695 | retry time. This helps with the case when the temporary error on the | |
6696 | address was really message-specific rather than address specific, since | |
6697 | it allows other messages through. | |
6698 | ||
6699 | We also wait for the next retry time if this is a message sent down an | |
6700 | existing SMTP connection (even though that will be forced). Otherwise there | |
6701 | will be far too many attempts for an address that gets a 4xx error. In | |
6702 | fact, after such an error, we should not get here because, the host should | |
6703 | not be remembered as one this message needs. However, there was a bug that | |
6704 | used to cause this to happen, so it is best to be on the safe side. | |
6705 | ||
6706 | Even if we haven't reached the retry time in the hints, there is one more | |
6707 | check to do, which is for the ultimate address timeout. We only do this | |
6708 | check if there is an address retry record and there is not a domain retry | |
6709 | record; this implies that previous attempts to handle the address had the | |
6710 | retry_use_local_parts option turned on. We use this as an approximation | |
6711 | for the destination being like a local delivery, for example delivery over | |
6712 | LMTP to an IMAP message store. In this situation users are liable to bump | |
6713 | into their quota and thereby have intermittently successful deliveries, | |
6714 | which keep the retry record fresh, which can lead to us perpetually | |
6715 | deferring messages. */ | |
6716 | ||
2ea97746 CE |
6717 | else if ( ( f.queue_running && !f.deliver_force |
6718 | || continue_hostname | |
6719 | ) | |
6720 | && ( ( domain_retry_record | |
6721 | && now < domain_retry_record->next_try | |
6722 | && !domain_retry_record->expired | |
6723 | ) | |
6724 | || ( address_retry_record | |
6725 | && now < address_retry_record->next_try | |
6726 | ) ) | |
6727 | && ( domain_retry_record | |
6728 | || !address_retry_record | |
6729 | || !retry_ultimate_address_timeout(addr->address_retry_key, | |
6730 | addr->domain, address_retry_record, now) | |
6731 | ) ) | |
420a0d19 CE |
6732 | { |
6733 | addr->message = US"retry time not reached"; | |
6734 | addr->basic_errno = ERRNO_RRETRY; | |
2ea97746 CE |
6735 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
6736 | ||
6737 | /* For remote-retry errors (here and just above) that we've not yet | |
6738 | hit the rery time, use the error recorded in the retry database | |
6739 | as info in the warning message. This lets us send a message even | |
6740 | when we're not failing on a fresh attempt. We assume that this | |
6741 | info is not sensitive. */ | |
6742 | ||
6743 | addr->message = domain_retry_record | |
6744 | ? domain_retry_record->text : address_retry_record->text; | |
6745 | setflag(addr, af_pass_message); | |
420a0d19 CE |
6746 | } |
6747 | ||
6748 | /* The domain is OK for routing. Remember if retry data exists so it | |
6749 | can be cleaned up after a successful delivery. */ | |
6750 | ||
6751 | else | |
6752 | { | |
2ea97746 | 6753 | if (domain_retry_record || address_retry_record) |
420a0d19 CE |
6754 | setflag(addr, af_dr_retry_exists); |
6755 | addr->next = addr_route; | |
6756 | addr_route = addr; | |
6757 | DEBUG(D_deliver|D_route) | |
6758 | debug_printf("%s: queued for routing\n", addr->address); | |
6759 | } | |
6760 | } | |
6761 | ||
6762 | /* The database is closed while routing is actually happening. Requests to | |
6763 | update it are put on a chain and all processed together at the end. */ | |
6764 | ||
2ea97746 | 6765 | if (dbm_file) dbfn_close(dbm_file); |
420a0d19 CE |
6766 | |
6767 | /* If queue_domains is set, we don't even want to try routing addresses in | |
6768 | those domains. During queue runs, queue_domains is forced to be unset. | |
6769 | Optimize by skipping this pass through the addresses if nothing is set. */ | |
6770 | ||
2ea97746 | 6771 | if (!f.deliver_force && queue_domains) |
420a0d19 CE |
6772 | { |
6773 | address_item *okaddr = NULL; | |
2ea97746 | 6774 | while (addr_route) |
420a0d19 CE |
6775 | { |
6776 | address_item *addr = addr_route; | |
6777 | addr_route = addr->next; | |
6778 | ||
6779 | deliver_domain = addr->domain; /* set $domain */ | |
2ea97746 | 6780 | if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0, |
420a0d19 CE |
6781 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) |
6782 | != OK) | |
420a0d19 CE |
6783 | if (rc == DEFER) |
6784 | { | |
6785 | addr->basic_errno = ERRNO_LISTDEFER; | |
6786 | addr->message = US"queue_domains lookup deferred"; | |
2ea97746 | 6787 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6788 | } |
6789 | else | |
6790 | { | |
6791 | addr->next = okaddr; | |
6792 | okaddr = addr; | |
6793 | } | |
420a0d19 CE |
6794 | else |
6795 | { | |
6796 | addr->basic_errno = ERRNO_QUEUE_DOMAIN; | |
6797 | addr->message = US"domain is in queue_domains"; | |
2ea97746 | 6798 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6799 | } |
6800 | } | |
6801 | ||
6802 | addr_route = okaddr; | |
6803 | } | |
6804 | ||
6805 | /* Now route those addresses that are not deferred. */ | |
6806 | ||
2ea97746 | 6807 | while (addr_route) |
420a0d19 CE |
6808 | { |
6809 | int rc; | |
6810 | address_item *addr = addr_route; | |
2ea97746 | 6811 | const uschar *old_domain = addr->domain; |
420a0d19 CE |
6812 | uschar *old_unique = addr->unique; |
6813 | addr_route = addr->next; | |
6814 | addr->next = NULL; | |
6815 | ||
6816 | /* Just in case some router parameter refers to it. */ | |
6817 | ||
2ea97746 CE |
6818 | if (!(return_path = addr->prop.errors_address)) |
6819 | return_path = sender_address; | |
420a0d19 CE |
6820 | |
6821 | /* If a router defers an address, add a retry item. Whether or not to | |
6822 | use the local part in the key is a property of the router. */ | |
6823 | ||
6824 | if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new, | |
6825 | &addr_succeed, v_none)) == DEFER) | |
2ea97746 CE |
6826 | retry_add_item(addr, |
6827 | addr->router->retry_use_local_part | |
6828 | ? string_sprintf("R:%s@%s", addr->local_part, addr->domain) | |
6829 | : string_sprintf("R:%s", addr->domain), | |
6830 | 0); | |
420a0d19 CE |
6831 | |
6832 | /* Otherwise, if there is an existing retry record in the database, add | |
6833 | retry items to delete both forms. We must also allow for the possibility | |
6834 | of a routing retry that includes the sender address. Since the domain might | |
6835 | have been rewritten (expanded to fully qualified) as a result of routing, | |
6836 | ensure that the rewritten form is also deleted. */ | |
6837 | ||
6838 | else if (testflag(addr, af_dr_retry_exists)) | |
6839 | { | |
6840 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, | |
6841 | sender_address); | |
6842 | retry_add_item(addr, altkey, rf_delete); | |
6843 | retry_add_item(addr, addr->address_retry_key, rf_delete); | |
6844 | retry_add_item(addr, addr->domain_retry_key, rf_delete); | |
6845 | if (Ustrcmp(addr->domain, old_domain) != 0) | |
6846 | retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete); | |
6847 | } | |
6848 | ||
6849 | /* DISCARD is given for :blackhole: and "seen finish". The event has been | |
6850 | logged, but we need to ensure the address (and maybe parents) is marked | |
6851 | done. */ | |
6852 | ||
6853 | if (rc == DISCARD) | |
6854 | { | |
6855 | address_done(addr, tod_stamp(tod_log)); | |
6856 | continue; /* route next address */ | |
6857 | } | |
6858 | ||
6859 | /* The address is finished with (failed or deferred). */ | |
6860 | ||
6861 | if (rc != OK) | |
6862 | { | |
2ea97746 | 6863 | (void)post_process_one(addr, rc, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
420a0d19 CE |
6864 | continue; /* route next address */ |
6865 | } | |
6866 | ||
6867 | /* The address has been routed. If the router changed the domain, it will | |
6868 | also have changed the unique address. We have to test whether this address | |
6869 | has already been delivered, because it's the unique address that finally | |
6870 | gets recorded. */ | |
6871 | ||
2ea97746 CE |
6872 | if ( addr->unique != old_unique |
6873 | && tree_search(tree_nonrecipients, addr->unique) != 0 | |
6874 | ) | |
420a0d19 CE |
6875 | { |
6876 | DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: " | |
6877 | "discarded\n", addr->address); | |
6878 | if (addr_remote == addr) addr_remote = addr->next; | |
6879 | else if (addr_local == addr) addr_local = addr->next; | |
6880 | } | |
6881 | ||
6882 | /* If the router has same_domain_copy_routing set, we are permitted to copy | |
6883 | the routing for any other addresses with the same domain. This is an | |
6884 | optimisation to save repeated DNS lookups for "standard" remote domain | |
6885 | routing. The option is settable only on routers that generate host lists. | |
6886 | We play it very safe, and do the optimization only if the address is routed | |
6887 | to a remote transport, there are no header changes, and the domain was not | |
6888 | modified by the router. */ | |
6889 | ||
2ea97746 CE |
6890 | if ( addr_remote == addr |
6891 | && addr->router->same_domain_copy_routing | |
6892 | && !addr->prop.extra_headers | |
6893 | && !addr->prop.remove_headers | |
6894 | && old_domain == addr->domain | |
6895 | ) | |
420a0d19 CE |
6896 | { |
6897 | address_item **chain = &addr_route; | |
2ea97746 | 6898 | while (*chain) |
420a0d19 CE |
6899 | { |
6900 | address_item *addr2 = *chain; | |
6901 | if (Ustrcmp(addr2->domain, addr->domain) != 0) | |
6902 | { | |
6903 | chain = &(addr2->next); | |
6904 | continue; | |
6905 | } | |
6906 | ||
6907 | /* Found a suitable address; take it off the routing list and add it to | |
6908 | the remote delivery list. */ | |
6909 | ||
6910 | *chain = addr2->next; | |
6911 | addr2->next = addr_remote; | |
6912 | addr_remote = addr2; | |
6913 | ||
6914 | /* Copy the routing data */ | |
6915 | ||
6916 | addr2->domain = addr->domain; | |
6917 | addr2->router = addr->router; | |
6918 | addr2->transport = addr->transport; | |
6919 | addr2->host_list = addr->host_list; | |
6920 | addr2->fallback_hosts = addr->fallback_hosts; | |
2ea97746 CE |
6921 | addr2->prop.errors_address = addr->prop.errors_address; |
6922 | copyflag(addr2, addr, af_hide_child); | |
6923 | copyflag(addr2, addr, af_local_host_removed); | |
420a0d19 CE |
6924 | |
6925 | DEBUG(D_deliver|D_route) | |
420a0d19 CE |
6926 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n" |
6927 | "routing %s\n" | |
6928 | "Routing for %s copied from %s\n", | |
6929 | addr2->address, addr2->address, addr->address); | |
420a0d19 CE |
6930 | } |
6931 | } | |
6932 | } /* Continue with routing the next address. */ | |
6933 | } /* Loop to process any child addresses that the routers created, and | |
6934 | any rerouted addresses that got put back on the new chain. */ | |
6935 | ||
6936 | ||
6937 | /* Debugging: show the results of the routing */ | |
6938 | ||
6939 | DEBUG(D_deliver|D_retry|D_route) | |
6940 | { | |
2ea97746 | 6941 | address_item *p; |
420a0d19 CE |
6942 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); |
6943 | debug_printf("After routing:\n Local deliveries:\n"); | |
2ea97746 | 6944 | for (p = addr_local; p; p = p->next) |
420a0d19 | 6945 | debug_printf(" %s\n", p->address); |
420a0d19 | 6946 | |
420a0d19 | 6947 | debug_printf(" Remote deliveries:\n"); |
2ea97746 | 6948 | for (p = addr_remote; p; p = p->next) |
420a0d19 | 6949 | debug_printf(" %s\n", p->address); |
420a0d19 | 6950 | |
420a0d19 | 6951 | debug_printf(" Failed addresses:\n"); |
2ea97746 | 6952 | for (p = addr_failed; p; p = p->next) |
420a0d19 | 6953 | debug_printf(" %s\n", p->address); |
420a0d19 | 6954 | |
420a0d19 | 6955 | debug_printf(" Deferred addresses:\n"); |
2ea97746 | 6956 | for (p = addr_defer; p; p = p->next) |
420a0d19 | 6957 | debug_printf(" %s\n", p->address); |
420a0d19 CE |
6958 | } |
6959 | ||
6960 | /* Free any resources that were cached during routing. */ | |
6961 | ||
6962 | search_tidyup(); | |
6963 | route_tidyup(); | |
6964 | ||
6965 | /* These two variables are set only during routing, after check_local_user. | |
6966 | Ensure they are not set in transports. */ | |
6967 | ||
6968 | local_user_gid = (gid_t)(-1); | |
6969 | local_user_uid = (uid_t)(-1); | |
6970 | ||
6971 | /* Check for any duplicate addresses. This check is delayed until after | |
6972 | routing, because the flexibility of the routing configuration means that | |
6973 | identical addresses with different parentage may end up being redirected to | |
6974 | different addresses. Checking for duplicates too early (as we previously used | |
6975 | to) makes this kind of thing not work. */ | |
6976 | ||
6977 | do_duplicate_check(&addr_local); | |
6978 | do_duplicate_check(&addr_remote); | |
6979 | ||
6980 | /* When acting as an MUA wrapper, we proceed only if all addresses route to a | |
6981 | remote transport. The check that they all end up in one transaction happens in | |
6982 | the do_remote_deliveries() function. */ | |
6983 | ||
2ea97746 CE |
6984 | if ( mua_wrapper |
6985 | && (addr_local || addr_failed || addr_defer) | |
6986 | ) | |
420a0d19 CE |
6987 | { |
6988 | address_item *addr; | |
6989 | uschar *which, *colon, *msg; | |
6990 | ||
2ea97746 | 6991 | if (addr_local) |
420a0d19 CE |
6992 | { |
6993 | addr = addr_local; | |
6994 | which = US"local"; | |
6995 | } | |
2ea97746 | 6996 | else if (addr_defer) |
420a0d19 CE |
6997 | { |
6998 | addr = addr_defer; | |
6999 | which = US"deferred"; | |
7000 | } | |
7001 | else | |
7002 | { | |
7003 | addr = addr_failed; | |
7004 | which = US"failed"; | |
7005 | } | |
7006 | ||
2ea97746 | 7007 | while (addr->parent) addr = addr->parent; |
420a0d19 | 7008 | |
2ea97746 | 7009 | if (addr->message) |
420a0d19 CE |
7010 | { |
7011 | colon = US": "; | |
7012 | msg = addr->message; | |
7013 | } | |
7014 | else colon = msg = US""; | |
7015 | ||
7016 | /* We don't need to log here for a forced failure as it will already | |
7017 | have been logged. Defer will also have been logged, but as a defer, so we do | |
7018 | need to do the failure logging. */ | |
7019 | ||
7020 | if (addr != addr_failed) | |
7021 | log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery", | |
7022 | addr->address, which); | |
7023 | ||
7024 | /* Always write an error to the caller */ | |
7025 | ||
7026 | fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address, | |
7027 | which, colon, msg); | |
7028 | ||
7029 | final_yield = DELIVER_MUA_FAILED; | |
7030 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
7031 | goto DELIVERY_TIDYUP; | |
7032 | } | |
7033 | ||
7034 | ||
7035 | /* If this is a run to continue deliveries to an external channel that is | |
7036 | already set up, defer any local deliveries. */ | |
7037 | ||
2ea97746 | 7038 | if (continue_transport) |
420a0d19 | 7039 | { |
2ea97746 | 7040 | if (addr_defer) |
420a0d19 CE |
7041 | { |
7042 | address_item *addr = addr_defer; | |
2ea97746 | 7043 | while (addr->next) addr = addr->next; |
420a0d19 CE |
7044 | addr->next = addr_local; |
7045 | } | |
2ea97746 CE |
7046 | else |
7047 | addr_defer = addr_local; | |
420a0d19 CE |
7048 | addr_local = NULL; |
7049 | } | |
7050 | ||
7051 | ||
7052 | /* Because address rewriting can happen in the routers, we should not really do | |
7053 | ANY deliveries until all addresses have been routed, so that all recipients of | |
7054 | the message get the same headers. However, this is in practice not always | |
7055 | possible, since sometimes remote addresses give DNS timeouts for days on end. | |
7056 | The pragmatic approach is to deliver what we can now, saving any rewritten | |
7057 | headers so that at least the next lot of recipients benefit from the rewriting | |
7058 | that has already been done. | |
7059 | ||
7060 | If any headers have been rewritten during routing, update the spool file to | |
7061 | remember them for all subsequent deliveries. This can be delayed till later if | |
7062 | there is only address to be delivered - if it succeeds the spool write need not | |
7063 | happen. */ | |
7064 | ||
2ea97746 CE |
7065 | if ( f.header_rewritten |
7066 | && ( addr_local && (addr_local->next || addr_remote) | |
7067 | || addr_remote && addr_remote->next | |
7068 | ) ) | |
420a0d19 CE |
7069 | { |
7070 | /* Panic-dies on error */ | |
7071 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
2ea97746 | 7072 | f.header_rewritten = FALSE; |
420a0d19 CE |
7073 | } |
7074 | ||
7075 | ||
2ea97746 CE |
7076 | /* If there are any deliveries to do and we do not already have the journal |
7077 | file, create it. This is used to record successful deliveries as soon as | |
7078 | possible after each delivery is known to be complete. A file opened with | |
7079 | O_APPEND is used so that several processes can run simultaneously. | |
420a0d19 CE |
7080 | |
7081 | The journal is just insurance against crashes. When the spool file is | |
7082 | ultimately updated at the end of processing, the journal is deleted. If a | |
7083 | journal is found to exist at the start of delivery, the addresses listed | |
7084 | therein are added to the non-recipients. */ | |
7085 | ||
2ea97746 | 7086 | if (addr_local || addr_remote) |
420a0d19 | 7087 | { |
420a0d19 CE |
7088 | if (journal_fd < 0) |
7089 | { | |
2ea97746 CE |
7090 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
7091 | ||
7092 | if ((journal_fd = Uopen(fname, | |
7093 | #ifdef O_CLOEXEC | |
7094 | O_CLOEXEC | | |
7095 | #endif | |
7096 | O_WRONLY|O_APPEND|O_CREAT|O_EXCL, SPOOL_MODE)) < 0) | |
7097 | { | |
7098 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s", | |
7099 | fname, strerror(errno)); | |
7100 | return DELIVER_NOT_ATTEMPTED; | |
7101 | } | |
420a0d19 | 7102 | |
2ea97746 CE |
7103 | /* Set the close-on-exec flag, make the file owned by Exim, and ensure |
7104 | that the mode is correct - the group setting doesn't always seem to get | |
7105 | set automatically. */ | |
420a0d19 | 7106 | |
2ea97746 CE |
7107 | if( fchown(journal_fd, exim_uid, exim_gid) |
7108 | || fchmod(journal_fd, SPOOL_MODE) | |
7109 | #ifndef O_CLOEXEC | |
7110 | || fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC) | |
7111 | #endif | |
7112 | ) | |
7113 | { | |
7114 | int ret = Uunlink(fname); | |
7115 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s", | |
7116 | fname, strerror(errno)); | |
7117 | if(ret && errno != ENOENT) | |
7118 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", | |
7119 | fname, strerror(errno)); | |
7120 | return DELIVER_NOT_ATTEMPTED; | |
7121 | } | |
420a0d19 CE |
7122 | } |
7123 | } | |
2ea97746 CE |
7124 | else if (journal_fd >= 0) |
7125 | { | |
7126 | close(journal_fd); | |
7127 | journal_fd = -1; | |
7128 | } | |
420a0d19 CE |
7129 | |
7130 | ||
7131 | ||
7132 | /* Now we can get down to the business of actually doing deliveries. Local | |
7133 | deliveries are done first, then remote ones. If ever the problems of how to | |
7134 | handle fallback transports are figured out, this section can be put into a loop | |
7135 | for handling fallbacks, though the uid switching will have to be revised. */ | |
7136 | ||
7137 | /* Precompile a regex that is used to recognize a parameter in response | |
7138 | to an LHLO command, if is isn't already compiled. This may be used on both | |
7139 | local and remote LMTP deliveries. */ | |
7140 | ||
2ea97746 CE |
7141 | if (!regex_IGNOREQUOTA) |
7142 | regex_IGNOREQUOTA = | |
7143 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
420a0d19 CE |
7144 | |
7145 | /* Handle local deliveries */ | |
7146 | ||
2ea97746 | 7147 | if (addr_local) |
420a0d19 CE |
7148 | { |
7149 | DEBUG(D_deliver|D_transport) | |
7150 | debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n"); | |
7151 | do_local_deliveries(); | |
2ea97746 | 7152 | f.disable_logging = FALSE; |
420a0d19 CE |
7153 | } |
7154 | ||
7155 | /* If queue_run_local is set, we do not want to attempt any remote deliveries, | |
7156 | so just queue them all. */ | |
7157 | ||
2ea97746 CE |
7158 | if (f.queue_run_local) |
7159 | while (addr_remote) | |
420a0d19 CE |
7160 | { |
7161 | address_item *addr = addr_remote; | |
7162 | addr_remote = addr->next; | |
7163 | addr->next = NULL; | |
7164 | addr->basic_errno = ERRNO_LOCAL_ONLY; | |
7165 | addr->message = US"remote deliveries suppressed"; | |
2ea97746 | 7166 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); |
420a0d19 | 7167 | } |
420a0d19 CE |
7168 | |
7169 | /* Handle remote deliveries */ | |
7170 | ||
2ea97746 | 7171 | if (addr_remote) |
420a0d19 CE |
7172 | { |
7173 | DEBUG(D_deliver|D_transport) | |
7174 | debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n"); | |
7175 | ||
7176 | /* Precompile some regex that are used to recognize parameters in response | |
7177 | to an EHLO command, if they aren't already compiled. */ | |
7178 | ||
2ea97746 | 7179 | deliver_init(); |
420a0d19 CE |
7180 | |
7181 | /* Now sort the addresses if required, and do the deliveries. The yield of | |
7182 | do_remote_deliveries is FALSE when mua_wrapper is set and all addresses | |
7183 | cannot be delivered in one transaction. */ | |
7184 | ||
2ea97746 | 7185 | if (remote_sort_domains) sort_remote_deliveries(); |
420a0d19 CE |
7186 | if (!do_remote_deliveries(FALSE)) |
7187 | { | |
7188 | log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all " | |
7189 | "be delivered in one transaction"); | |
7190 | fprintf(stderr, "delivery to smarthost failed (configuration problem)\n"); | |
7191 | ||
7192 | final_yield = DELIVER_MUA_FAILED; | |
7193 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
7194 | goto DELIVERY_TIDYUP; | |
7195 | } | |
7196 | ||
7197 | /* See if any of the addresses that failed got put on the queue for delivery | |
7198 | to their fallback hosts. We do it this way because often the same fallback | |
7199 | host is used for many domains, so all can be sent in a single transaction | |
7200 | (if appropriately configured). */ | |
7201 | ||
2ea97746 | 7202 | if (addr_fallback && !mua_wrapper) |
420a0d19 CE |
7203 | { |
7204 | DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n"); | |
7205 | addr_remote = addr_fallback; | |
7206 | addr_fallback = NULL; | |
2ea97746 | 7207 | if (remote_sort_domains) sort_remote_deliveries(); |
420a0d19 CE |
7208 | do_remote_deliveries(TRUE); |
7209 | } | |
2ea97746 | 7210 | f.disable_logging = FALSE; |
420a0d19 CE |
7211 | } |
7212 | ||
7213 | ||
7214 | /* All deliveries are now complete. Ignore SIGTERM during this tidying up | |
7215 | phase, to minimize cases of half-done things. */ | |
7216 | ||
7217 | DEBUG(D_deliver) | |
7218 | debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n"); | |
2ea97746 | 7219 | cancel_cutthrough_connection(TRUE, US"deliveries are done"); |
420a0d19 CE |
7220 | |
7221 | /* Root privilege is no longer needed */ | |
7222 | ||
7223 | exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying"); | |
7224 | ||
7225 | set_process_info("tidying up after delivering %s", message_id); | |
7226 | signal(SIGTERM, SIG_IGN); | |
7227 | ||
7228 | /* When we are acting as an MUA wrapper, the smtp transport will either have | |
7229 | succeeded for all addresses, or failed them all in normal cases. However, there | |
7230 | are some setup situations (e.g. when a named port does not exist) that cause an | |
7231 | immediate exit with deferral of all addresses. Convert those into failures. We | |
7232 | do not ever want to retry, nor do we want to send a bounce message. */ | |
7233 | ||
7234 | if (mua_wrapper) | |
7235 | { | |
2ea97746 | 7236 | if (addr_defer) |
420a0d19 CE |
7237 | { |
7238 | address_item *addr, *nextaddr; | |
2ea97746 | 7239 | for (addr = addr_defer; addr; addr = nextaddr) |
420a0d19 CE |
7240 | { |
7241 | log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred " | |
7242 | "delivery", addr->address); | |
7243 | nextaddr = addr->next; | |
7244 | addr->next = addr_failed; | |
7245 | addr_failed = addr; | |
7246 | } | |
7247 | addr_defer = NULL; | |
7248 | } | |
7249 | ||
7250 | /* Now all should either have succeeded or failed. */ | |
7251 | ||
2ea97746 CE |
7252 | if (!addr_failed) |
7253 | final_yield = DELIVER_MUA_SUCCEEDED; | |
7254 | else | |
420a0d19 | 7255 | { |
2ea97746 CE |
7256 | host_item * host; |
7257 | uschar *s = addr_failed->user_message; | |
7258 | ||
7259 | if (!s) s = addr_failed->message; | |
420a0d19 CE |
7260 | |
7261 | fprintf(stderr, "Delivery failed: "); | |
7262 | if (addr_failed->basic_errno > 0) | |
7263 | { | |
7264 | fprintf(stderr, "%s", strerror(addr_failed->basic_errno)); | |
2ea97746 | 7265 | if (s) fprintf(stderr, ": "); |
420a0d19 | 7266 | } |
2ea97746 CE |
7267 | if ((host = addr_failed->host_used)) |
7268 | fprintf(stderr, "H=%s [%s]: ", host->name, host->address); | |
7269 | if (s) | |
7270 | fprintf(stderr, "%s", CS s); | |
7271 | else if (addr_failed->basic_errno <= 0) | |
7272 | fprintf(stderr, "unknown error"); | |
420a0d19 CE |
7273 | fprintf(stderr, "\n"); |
7274 | ||
7275 | final_yield = DELIVER_MUA_FAILED; | |
7276 | addr_failed = NULL; | |
7277 | } | |
7278 | } | |
7279 | ||
7280 | /* In a normal configuration, we now update the retry database. This is done in | |
7281 | one fell swoop at the end in order not to keep opening and closing (and | |
7282 | locking) the database. The code for handling retries is hived off into a | |
7283 | separate module for convenience. We pass it the addresses of the various | |
7284 | chains, because deferred addresses can get moved onto the failed chain if the | |
7285 | retry cutoff time has expired for all alternative destinations. Bypass the | |
7286 | updating of the database if the -N flag is set, which is a debugging thing that | |
7287 | prevents actual delivery. */ | |
7288 | ||
2ea97746 CE |
7289 | else if (!f.dont_deliver) |
7290 | retry_update(&addr_defer, &addr_failed, &addr_succeed); | |
420a0d19 | 7291 | |
2ea97746 | 7292 | /* Send DSN for successful messages if requested */ |
420a0d19 CE |
7293 | addr_senddsn = NULL; |
7294 | ||
2ea97746 | 7295 | for (addr_dsntmp = addr_succeed; addr_dsntmp; addr_dsntmp = addr_dsntmp->next) |
420a0d19 | 7296 | { |
420a0d19 | 7297 | /* af_ignore_error not honored here. it's not an error */ |
2ea97746 CE |
7298 | DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n" |
7299 | "DSN: processing successful delivery address: %s\n" | |
7300 | "DSN: Sender_address: %s\n" | |
7301 | "DSN: orcpt: %s flags: %d\n" | |
7302 | "DSN: envid: %s ret: %d\n" | |
7303 | "DSN: Final recipient: %s\n" | |
7304 | "DSN: Remote SMTP server supports DSN: %d\n", | |
7305 | addr_dsntmp->router ? addr_dsntmp->router->name : US"(unknown)", | |
7306 | addr_dsntmp->address, | |
7307 | sender_address, | |
7308 | addr_dsntmp->dsn_orcpt ? addr_dsntmp->dsn_orcpt : US"NULL", | |
7309 | addr_dsntmp->dsn_flags, | |
7310 | dsn_envid ? dsn_envid : US"NULL", dsn_ret, | |
7311 | addr_dsntmp->address, | |
7312 | addr_dsntmp->dsn_aware | |
7313 | ); | |
420a0d19 CE |
7314 | |
7315 | /* send report if next hop not DSN aware or a router flagged "last DSN hop" | |
7316 | and a report was requested */ | |
2ea97746 CE |
7317 | if ( ( addr_dsntmp->dsn_aware != dsn_support_yes |
7318 | || addr_dsntmp->dsn_flags & rf_dsnlasthop | |
7319 | ) | |
7320 | && addr_dsntmp->dsn_flags & rf_notify_success | |
7321 | ) | |
420a0d19 CE |
7322 | { |
7323 | /* copy and relink address_item and send report with all of them at once later */ | |
2ea97746 | 7324 | address_item * addr_next = addr_senddsn; |
420a0d19 | 7325 | addr_senddsn = store_get(sizeof(address_item)); |
2ea97746 | 7326 | *addr_senddsn = *addr_dsntmp; |
420a0d19 CE |
7327 | addr_senddsn->next = addr_next; |
7328 | } | |
7329 | else | |
2ea97746 | 7330 | DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n"); |
420a0d19 CE |
7331 | } |
7332 | ||
2ea97746 | 7333 | if (addr_senddsn) |
420a0d19 CE |
7334 | { |
7335 | pid_t pid; | |
7336 | int fd; | |
7337 | ||
2ea97746 | 7338 | /* create exim process to send message */ |
420a0d19 CE |
7339 | pid = child_open_exim(&fd); |
7340 | ||
7341 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid); | |
2ea97746 | 7342 | |
420a0d19 CE |
7343 | if (pid < 0) /* Creation of child failed */ |
7344 | { | |
7345 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " | |
7346 | "create child process to send failure message: %s", getpid(), | |
7347 | getppid(), strerror(errno)); | |
7348 | ||
2ea97746 CE |
7349 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n"); |
7350 | } | |
420a0d19 CE |
7351 | else /* Creation of child succeeded */ |
7352 | { | |
2ea97746 | 7353 | FILE * f = fdopen(fd, "wb"); |
420a0d19 | 7354 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ |
2ea97746 CE |
7355 | uschar * bound; |
7356 | transport_ctx tctx = {{0}}; | |
7357 | ||
7358 | DEBUG(D_deliver) | |
7359 | debug_printf("sending error message to: %s\n", sender_address); | |
7360 | ||
420a0d19 | 7361 | /* build unique id for MIME boundary */ |
2ea97746 CE |
7362 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
7363 | DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound); | |
7364 | ||
420a0d19 CE |
7365 | if (errors_reply_to) |
7366 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
2ea97746 | 7367 | |
420a0d19 CE |
7368 | fprintf(f, "Auto-Submitted: auto-generated\n" |
7369 | "From: Mail Delivery System <Mailer-Daemon@%s>\n" | |
7370 | "To: %s\n" | |
7371 | "Subject: Delivery Status Notification\n" | |
7372 | "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n" | |
7373 | "MIME-Version: 1.0\n\n" | |
7374 | ||
7375 | "--%s\n" | |
7376 | "Content-type: text/plain; charset=us-ascii\n\n" | |
2ea97746 | 7377 | |
420a0d19 CE |
7378 | "This message was created automatically by mail delivery software.\n" |
7379 | " ----- The following addresses had successful delivery notifications -----\n", | |
2ea97746 | 7380 | qualify_domain_sender, sender_address, bound, bound); |
420a0d19 | 7381 | |
2ea97746 CE |
7382 | for (addr_dsntmp = addr_senddsn; addr_dsntmp; |
7383 | addr_dsntmp = addr_dsntmp->next) | |
420a0d19 CE |
7384 | fprintf(f, "<%s> (relayed %s)\n\n", |
7385 | addr_dsntmp->address, | |
2ea97746 CE |
7386 | addr_dsntmp->dsn_flags & rf_dsnlasthop ? "via non DSN router" |
7387 | : addr_dsntmp->dsn_aware == dsn_support_no ? "to non-DSN-aware mailer" | |
7388 | : "via non \"Remote SMTP\" router" | |
420a0d19 | 7389 | ); |
2ea97746 | 7390 | |
420a0d19 CE |
7391 | fprintf(f, "--%s\n" |
7392 | "Content-type: message/delivery-status\n\n" | |
7393 | "Reporting-MTA: dns; %s\n", | |
2ea97746 | 7394 | bound, smtp_active_hostname); |
420a0d19 | 7395 | |
2ea97746 CE |
7396 | if (dsn_envid) |
7397 | { /* must be decoded from xtext: see RFC 3461:6.3a */ | |
420a0d19 CE |
7398 | uschar *xdec_envid; |
7399 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
7400 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); | |
7401 | else | |
2ea97746 | 7402 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
420a0d19 CE |
7403 | } |
7404 | fputc('\n', f); | |
7405 | ||
7406 | for (addr_dsntmp = addr_senddsn; | |
7407 | addr_dsntmp; | |
7408 | addr_dsntmp = addr_dsntmp->next) | |
7409 | { | |
7410 | if (addr_dsntmp->dsn_orcpt) | |
7411 | fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt); | |
7412 | ||
7413 | fprintf(f, "Action: delivered\n" | |
7414 | "Final-Recipient: rfc822;%s\n" | |
7415 | "Status: 2.0.0\n", | |
7416 | addr_dsntmp->address); | |
7417 | ||
7418 | if (addr_dsntmp->host_used && addr_dsntmp->host_used->name) | |
2ea97746 | 7419 | fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n", |
420a0d19 CE |
7420 | addr_dsntmp->host_used->name); |
7421 | else | |
2ea97746 CE |
7422 | fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n", |
7423 | addr_dsntmp->dsn_flags & rf_dsnlasthop ? "DSN" : "SMTP"); | |
420a0d19 CE |
7424 | } |
7425 | ||
2ea97746 CE |
7426 | fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound); |
7427 | ||
420a0d19 CE |
7428 | fflush(f); |
7429 | transport_filter_argv = NULL; /* Just in case */ | |
7430 | return_path = sender_address; /* In case not previously set */ | |
2ea97746 | 7431 | |
420a0d19 | 7432 | /* Write the original email out */ |
2ea97746 CE |
7433 | |
7434 | tctx.u.fd = fd; | |
7435 | tctx.options = topt_add_return_path | topt_no_body; | |
7436 | /*XXX hmm, retval ignored. | |
7437 | Could error for any number of reasons, and they are not handled. */ | |
7438 | transport_write_message(&tctx, 0); | |
420a0d19 CE |
7439 | fflush(f); |
7440 | ||
2ea97746 | 7441 | fprintf(f,"\n--%s--\n", bound); |
420a0d19 CE |
7442 | |
7443 | fflush(f); | |
7444 | fclose(f); | |
7445 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ | |
7446 | } | |
7447 | } | |
420a0d19 CE |
7448 | |
7449 | /* If any addresses failed, we must send a message to somebody, unless | |
7450 | af_ignore_error is set, in which case no action is taken. It is possible for | |
7451 | several messages to get sent if there are addresses with different | |
7452 | requirements. */ | |
7453 | ||
2ea97746 | 7454 | while (addr_failed) |
420a0d19 CE |
7455 | { |
7456 | pid_t pid; | |
7457 | int fd; | |
7458 | uschar *logtod = tod_stamp(tod_log); | |
7459 | address_item *addr; | |
7460 | address_item *handled_addr = NULL; | |
7461 | address_item **paddr; | |
7462 | address_item *msgchain = NULL; | |
7463 | address_item **pmsgchain = &msgchain; | |
7464 | ||
7465 | /* There are weird cases when logging is disabled in the transport. However, | |
7466 | there may not be a transport (address failed by a router). */ | |
7467 | ||
2ea97746 CE |
7468 | f.disable_logging = FALSE; |
7469 | if (addr_failed->transport) | |
7470 | f.disable_logging = addr_failed->transport->disable_logging; | |
420a0d19 CE |
7471 | |
7472 | DEBUG(D_deliver) | |
7473 | debug_printf("processing failed address %s\n", addr_failed->address); | |
7474 | ||
7475 | /* There are only two ways an address in a bounce message can get here: | |
7476 | ||
7477 | (1) When delivery was initially deferred, but has now timed out (in the call | |
7478 | to retry_update() above). We can detect this by testing for | |
7479 | af_retry_timedout. If the address does not have its own errors address, | |
7480 | we arrange to ignore the error. | |
7481 | ||
7482 | (2) If delivery failures for bounce messages are being ignored. We can detect | |
7483 | this by testing for af_ignore_error. This will also be set if a bounce | |
7484 | message has been autothawed and the ignore_bounce_errors_after time has | |
7485 | passed. It might also be set if a router was explicitly configured to | |
7486 | ignore errors (errors_to = ""). | |
7487 | ||
7488 | If neither of these cases obtains, something has gone wrong. Log the | |
7489 | incident, but then ignore the error. */ | |
7490 | ||
2ea97746 | 7491 | if (sender_address[0] == 0 && !addr_failed->prop.errors_address) |
420a0d19 | 7492 | { |
2ea97746 CE |
7493 | if ( !testflag(addr_failed, af_retry_timedout) |
7494 | && !addr_failed->prop.ignore_error) | |
420a0d19 CE |
7495 | log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message " |
7496 | "failure is neither frozen nor ignored (it's been ignored)"); | |
2ea97746 CE |
7497 | |
7498 | addr_failed->prop.ignore_error = TRUE; | |
420a0d19 CE |
7499 | } |
7500 | ||
7501 | /* If the first address on the list has af_ignore_error set, just remove | |
7502 | it from the list, throw away any saved message file, log it, and | |
7503 | mark the recipient done. */ | |
7504 | ||
2ea97746 CE |
7505 | if ( addr_failed->prop.ignore_error |
7506 | || addr_failed->dsn_flags & (rf_dsnflags & ~rf_notify_failure) | |
420a0d19 | 7507 | ) |
2ea97746 | 7508 | { |
420a0d19 CE |
7509 | addr = addr_failed; |
7510 | addr_failed = addr->next; | |
2ea97746 | 7511 | if (addr->return_filename) Uunlink(addr->return_filename); |
420a0d19 | 7512 | |
2ea97746 CE |
7513 | #ifndef DISABLE_EVENT |
7514 | msg_event_raise(US"msg:fail:delivery", addr); | |
7515 | #endif | |
420a0d19 CE |
7516 | log_write(0, LOG_MAIN, "%s%s%s%s: error ignored", |
7517 | addr->address, | |
2ea97746 CE |
7518 | !addr->parent ? US"" : US" <", |
7519 | !addr->parent ? US"" : addr->parent->address, | |
7520 | !addr->parent ? US"" : US">"); | |
420a0d19 CE |
7521 | |
7522 | address_done(addr, logtod); | |
7523 | child_done(addr, logtod); | |
7524 | /* Panic-dies on error */ | |
7525 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7526 | } | |
7527 | ||
7528 | /* Otherwise, handle the sending of a message. Find the error address for | |
7529 | the first address, then send a message that includes all failed addresses | |
7530 | that have the same error address. Note the bounce_recipient is a global so | |
2ea97746 | 7531 | that it can be accessed by $bounce_recipient while creating a customized |
420a0d19 CE |
7532 | error message. */ |
7533 | ||
7534 | else | |
7535 | { | |
2ea97746 CE |
7536 | if (!(bounce_recipient = addr_failed->prop.errors_address)) |
7537 | bounce_recipient = sender_address; | |
420a0d19 CE |
7538 | |
7539 | /* Make a subprocess to send a message */ | |
7540 | ||
2ea97746 | 7541 | if ((pid = child_open_exim(&fd)) < 0) |
420a0d19 CE |
7542 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " |
7543 | "create child process to send failure message: %s", getpid(), | |
7544 | getppid(), strerror(errno)); | |
7545 | ||
7546 | /* Creation of child succeeded */ | |
7547 | ||
7548 | else | |
7549 | { | |
7550 | int ch, rc; | |
7551 | int filecount = 0; | |
7552 | int rcount = 0; | |
7553 | uschar *bcc, *emf_text; | |
2ea97746 CE |
7554 | FILE * fp = fdopen(fd, "wb"); |
7555 | FILE * emf = NULL; | |
420a0d19 CE |
7556 | BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0; |
7557 | int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) * | |
7558 | DELIVER_IN_BUFFER_SIZE; | |
2ea97746 | 7559 | uschar * bound; |
420a0d19 CE |
7560 | uschar *dsnlimitmsg; |
7561 | uschar *dsnnotifyhdr; | |
7562 | int topt; | |
420a0d19 CE |
7563 | |
7564 | DEBUG(D_deliver) | |
7565 | debug_printf("sending error message to: %s\n", bounce_recipient); | |
7566 | ||
7567 | /* Scan the addresses for all that have the same errors address, removing | |
7568 | them from the addr_failed chain, and putting them on msgchain. */ | |
7569 | ||
7570 | paddr = &addr_failed; | |
2ea97746 CE |
7571 | for (addr = addr_failed; addr; addr = *paddr) |
7572 | if (Ustrcmp(bounce_recipient, addr->prop.errors_address | |
7573 | ? addr->prop.errors_address : sender_address) == 0) | |
7574 | { /* The same - dechain */ | |
420a0d19 CE |
7575 | *paddr = addr->next; |
7576 | *pmsgchain = addr; | |
7577 | addr->next = NULL; | |
7578 | pmsgchain = &(addr->next); | |
7579 | } | |
2ea97746 CE |
7580 | else |
7581 | paddr = &addr->next; /* Not the same; skip */ | |
420a0d19 CE |
7582 | |
7583 | /* Include X-Failed-Recipients: for automatic interpretation, but do | |
7584 | not let any one header line get too long. We do this by starting a | |
7585 | new header every 50 recipients. Omit any addresses for which the | |
7586 | "hide_child" flag is set. */ | |
7587 | ||
2ea97746 | 7588 | for (addr = msgchain; addr; addr = addr->next) |
420a0d19 CE |
7589 | { |
7590 | if (testflag(addr, af_hide_child)) continue; | |
7591 | if (rcount >= 50) | |
7592 | { | |
2ea97746 | 7593 | fprintf(fp, "\n"); |
420a0d19 CE |
7594 | rcount = 0; |
7595 | } | |
2ea97746 CE |
7596 | fprintf(fp, "%s%s", |
7597 | rcount++ == 0 | |
7598 | ? "X-Failed-Recipients: " | |
7599 | : ",\n ", | |
7600 | testflag(addr, af_pfr) && addr->parent | |
7601 | ? string_printing(addr->parent->address) | |
7602 | : string_printing(addr->address)); | |
420a0d19 | 7603 | } |
2ea97746 | 7604 | if (rcount > 0) fprintf(fp, "\n"); |
420a0d19 CE |
7605 | |
7606 | /* Output the standard headers */ | |
7607 | ||
2ea97746 CE |
7608 | if (errors_reply_to) |
7609 | fprintf(fp, "Reply-To: %s\n", errors_reply_to); | |
7610 | fprintf(fp, "Auto-Submitted: auto-replied\n"); | |
7611 | moan_write_from(fp); | |
7612 | fprintf(fp, "To: %s\n", bounce_recipient); | |
420a0d19 | 7613 | |
420a0d19 | 7614 | /* generate boundary string and output MIME-Headers */ |
2ea97746 | 7615 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
420a0d19 | 7616 | |
2ea97746 | 7617 | fprintf(fp, "Content-Type: multipart/report;" |
420a0d19 CE |
7618 | " report-type=delivery-status; boundary=%s\n" |
7619 | "MIME-Version: 1.0\n", | |
2ea97746 | 7620 | bound); |
420a0d19 CE |
7621 | |
7622 | /* Open a template file if one is provided. Log failure to open, but | |
7623 | carry on - default texts will be used. */ | |
7624 | ||
7625 | if (bounce_message_file) | |
7626 | if (!(emf = Ufopen(bounce_message_file, "rb"))) | |
7627 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error " | |
7628 | "message texts: %s", bounce_message_file, strerror(errno)); | |
7629 | ||
7630 | /* Quietly copy to configured additional addresses if required. */ | |
7631 | ||
7632 | if ((bcc = moan_check_errorcopy(bounce_recipient))) | |
2ea97746 | 7633 | fprintf(fp, "Bcc: %s\n", bcc); |
420a0d19 CE |
7634 | |
7635 | /* The texts for the message can be read from a template file; if there | |
7636 | isn't one, or if it is too short, built-in texts are used. The first | |
7637 | emf text is a Subject: and any other headers. */ | |
7638 | ||
7639 | if ((emf_text = next_emf(emf, US"header"))) | |
2ea97746 | 7640 | fprintf(fp, "%s\n", emf_text); |
420a0d19 | 7641 | else |
2ea97746 | 7642 | fprintf(fp, "Subject: Mail delivery failed%s\n\n", |
420a0d19 CE |
7643 | to_sender? ": returning message to sender" : ""); |
7644 | ||
420a0d19 | 7645 | /* output human readable part as text/plain section */ |
2ea97746 | 7646 | fprintf(fp, "--%s\n" |
420a0d19 | 7647 | "Content-type: text/plain; charset=us-ascii\n\n", |
2ea97746 | 7648 | bound); |
420a0d19 CE |
7649 | |
7650 | if ((emf_text = next_emf(emf, US"intro"))) | |
2ea97746 | 7651 | fprintf(fp, "%s", CS emf_text); |
420a0d19 CE |
7652 | else |
7653 | { | |
2ea97746 | 7654 | fprintf(fp, |
420a0d19 CE |
7655 | /* This message has been reworded several times. It seems to be confusing to |
7656 | somebody, however it is worded. I have retreated to the original, simple | |
7657 | wording. */ | |
7658 | "This message was created automatically by mail delivery software.\n"); | |
7659 | ||
7660 | if (bounce_message_text) | |
2ea97746 | 7661 | fprintf(fp, "%s", CS bounce_message_text); |
420a0d19 | 7662 | if (to_sender) |
2ea97746 | 7663 | fprintf(fp, |
420a0d19 CE |
7664 | "\nA message that you sent could not be delivered to one or more of its\n" |
7665 | "recipients. This is a permanent error. The following address(es) failed:\n"); | |
7666 | else | |
2ea97746 | 7667 | fprintf(fp, |
420a0d19 CE |
7668 | "\nA message sent by\n\n <%s>\n\n" |
7669 | "could not be delivered to one or more of its recipients. The following\n" | |
7670 | "address(es) failed:\n", sender_address); | |
7671 | } | |
2ea97746 | 7672 | fputc('\n', fp); |
420a0d19 CE |
7673 | |
7674 | /* Process the addresses, leaving them on the msgchain if they have a | |
7675 | file name for a return message. (There has already been a check in | |
7676 | post_process_one() for the existence of data in the message file.) A TRUE | |
7677 | return from print_address_information() means that the address is not | |
7678 | hidden. */ | |
7679 | ||
7680 | paddr = &msgchain; | |
2ea97746 | 7681 | for (addr = msgchain; addr; addr = *paddr) |
420a0d19 | 7682 | { |
2ea97746 CE |
7683 | if (print_address_information(addr, fp, US" ", US"\n ", US"")) |
7684 | print_address_error(addr, fp, US""); | |
420a0d19 CE |
7685 | |
7686 | /* End the final line for the address */ | |
7687 | ||
2ea97746 | 7688 | fputc('\n', fp); |
420a0d19 CE |
7689 | |
7690 | /* Leave on msgchain if there's a return file. */ | |
7691 | ||
7692 | if (addr->return_file >= 0) | |
7693 | { | |
7694 | paddr = &(addr->next); | |
7695 | filecount++; | |
7696 | } | |
7697 | ||
7698 | /* Else save so that we can tick off the recipient when the | |
7699 | message is sent. */ | |
7700 | ||
7701 | else | |
7702 | { | |
7703 | *paddr = addr->next; | |
7704 | addr->next = handled_addr; | |
7705 | handled_addr = addr; | |
7706 | } | |
7707 | } | |
7708 | ||
2ea97746 | 7709 | fputc('\n', fp); |
420a0d19 CE |
7710 | |
7711 | /* Get the next text, whether we need it or not, so as to be | |
7712 | positioned for the one after. */ | |
7713 | ||
7714 | emf_text = next_emf(emf, US"generated text"); | |
7715 | ||
7716 | /* If there were any file messages passed by the local transports, | |
7717 | include them in the message. Then put the address on the handled chain. | |
7718 | In the case of a batch of addresses that were all sent to the same | |
7719 | transport, the return_file field in all of them will contain the same | |
7720 | fd, and the return_filename field in the *last* one will be set (to the | |
7721 | name of the file). */ | |
7722 | ||
7723 | if (msgchain) | |
7724 | { | |
7725 | address_item *nextaddr; | |
7726 | ||
7727 | if (emf_text) | |
2ea97746 | 7728 | fprintf(fp, "%s", CS emf_text); |
420a0d19 | 7729 | else |
2ea97746 | 7730 | fprintf(fp, |
420a0d19 CE |
7731 | "The following text was generated during the delivery " |
7732 | "attempt%s:\n", (filecount > 1)? "s" : ""); | |
7733 | ||
2ea97746 | 7734 | for (addr = msgchain; addr; addr = nextaddr) |
420a0d19 CE |
7735 | { |
7736 | FILE *fm; | |
7737 | address_item *topaddr = addr; | |
7738 | ||
7739 | /* List all the addresses that relate to this file */ | |
7740 | ||
2ea97746 | 7741 | fputc('\n', fp); |
420a0d19 CE |
7742 | while(addr) /* Insurance */ |
7743 | { | |
2ea97746 | 7744 | print_address_information(addr, fp, US"------ ", US"\n ", |
420a0d19 CE |
7745 | US" ------\n"); |
7746 | if (addr->return_filename) break; | |
7747 | addr = addr->next; | |
7748 | } | |
2ea97746 | 7749 | fputc('\n', fp); |
420a0d19 CE |
7750 | |
7751 | /* Now copy the file */ | |
7752 | ||
2ea97746 CE |
7753 | if (!(fm = Ufopen(addr->return_filename, "rb"))) |
7754 | fprintf(fp, " +++ Exim error... failed to open text file: %s\n", | |
420a0d19 CE |
7755 | strerror(errno)); |
7756 | else | |
7757 | { | |
2ea97746 | 7758 | while ((ch = fgetc(fm)) != EOF) fputc(ch, fp); |
420a0d19 CE |
7759 | (void)fclose(fm); |
7760 | } | |
7761 | Uunlink(addr->return_filename); | |
7762 | ||
7763 | /* Can now add to handled chain, first fishing off the next | |
7764 | address on the msgchain. */ | |
7765 | ||
7766 | nextaddr = addr->next; | |
7767 | addr->next = handled_addr; | |
7768 | handled_addr = topaddr; | |
7769 | } | |
2ea97746 | 7770 | fputc('\n', fp); |
420a0d19 CE |
7771 | } |
7772 | ||
420a0d19 | 7773 | /* output machine readable part */ |
2ea97746 CE |
7774 | #ifdef SUPPORT_I18N |
7775 | if (message_smtputf8) | |
7776 | fprintf(fp, "--%s\n" | |
7777 | "Content-type: message/global-delivery-status\n\n" | |
7778 | "Reporting-MTA: dns; %s\n", | |
7779 | bound, smtp_active_hostname); | |
7780 | else | |
7781 | #endif | |
7782 | fprintf(fp, "--%s\n" | |
7783 | "Content-type: message/delivery-status\n\n" | |
7784 | "Reporting-MTA: dns; %s\n", | |
7785 | bound, smtp_active_hostname); | |
420a0d19 CE |
7786 | |
7787 | if (dsn_envid) | |
7788 | { | |
7789 | /* must be decoded from xtext: see RFC 3461:6.3a */ | |
7790 | uschar *xdec_envid; | |
7791 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
2ea97746 | 7792 | fprintf(fp, "Original-Envelope-ID: %s\n", dsn_envid); |
420a0d19 | 7793 | else |
2ea97746 | 7794 | fprintf(fp, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
420a0d19 | 7795 | } |
2ea97746 CE |
7796 | fputc('\n', fp); |
7797 | ||
420a0d19 CE |
7798 | for (addr = handled_addr; addr; addr = addr->next) |
7799 | { | |
2ea97746 CE |
7800 | host_item * hu; |
7801 | fprintf(fp, "Action: failed\n" | |
420a0d19 CE |
7802 | "Final-Recipient: rfc822;%s\n" |
7803 | "Status: 5.0.0\n", | |
7804 | addr->address); | |
2ea97746 CE |
7805 | if ((hu = addr->host_used) && hu->name) |
7806 | { | |
7807 | fprintf(fp, "Remote-MTA: dns; %s\n", hu->name); | |
7808 | #ifdef EXPERIMENTAL_DSN_INFO | |
7809 | { | |
7810 | const uschar * s; | |
7811 | if (hu->address) | |
7812 | { | |
7813 | uschar * p = hu->port == 25 | |
7814 | ? US"" : string_sprintf(":%d", hu->port); | |
7815 | fprintf(fp, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p); | |
7816 | } | |
7817 | if ((s = addr->smtp_greeting) && *s) | |
7818 | fprintf(fp, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s); | |
7819 | if ((s = addr->helo_response) && *s) | |
7820 | fprintf(fp, "X-Remote-MTA-helo-response: X-str; %s\n", s); | |
7821 | if ((s = addr->message) && *s) | |
7822 | fprintf(fp, "X-Exim-Diagnostic: X-str; %s\n", s); | |
7823 | } | |
420a0d19 | 7824 | #endif |
2ea97746 CE |
7825 | print_dsn_diagnostic_code(addr, fp); |
7826 | } | |
7827 | fputc('\n', fp); | |
7828 | } | |
420a0d19 CE |
7829 | |
7830 | /* Now copy the message, trying to give an intelligible comment if | |
7831 | it is too long for it all to be copied. The limit isn't strictly | |
7832 | applied because of the buffering. There is, however, an option | |
7833 | to suppress copying altogether. */ | |
7834 | ||
7835 | emf_text = next_emf(emf, US"copy"); | |
7836 | ||
420a0d19 | 7837 | /* add message body |
2ea97746 | 7838 | we ignore the intro text from template and add |
420a0d19 | 7839 | the text for bounce_return_size_limit at the end. |
2ea97746 | 7840 | |
420a0d19 CE |
7841 | bounce_return_message is ignored |
7842 | in case RET= is defined we honor these values | |
7843 | otherwise bounce_return_body is honored. | |
2ea97746 | 7844 | |
420a0d19 CE |
7845 | bounce_return_size_limit is always honored. |
7846 | */ | |
2ea97746 CE |
7847 | |
7848 | fprintf(fp, "--%s\n", bound); | |
420a0d19 CE |
7849 | |
7850 | dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned"; | |
7851 | dsnnotifyhdr = NULL; | |
7852 | topt = topt_add_return_path; | |
7853 | ||
7854 | /* RET=HDRS? top priority */ | |
7855 | if (dsn_ret == dsn_ret_hdrs) | |
7856 | topt |= topt_no_body; | |
7857 | else | |
2ea97746 CE |
7858 | { |
7859 | struct stat statbuf; | |
7860 | ||
420a0d19 CE |
7861 | /* no full body return at all? */ |
7862 | if (!bounce_return_body) | |
7863 | { | |
7864 | topt |= topt_no_body; | |
7865 | /* add header if we overrule RET=FULL */ | |
7866 | if (dsn_ret == dsn_ret_full) | |
7867 | dsnnotifyhdr = dsnlimitmsg; | |
7868 | } | |
2ea97746 | 7869 | /* line length limited... return headers only if oversize */ |
420a0d19 | 7870 | /* size limited ... return headers only if limit reached */ |
2ea97746 CE |
7871 | else if ( max_received_linelength > bounce_return_linesize_limit |
7872 | || ( bounce_return_size_limit > 0 | |
7873 | && fstat(deliver_datafile, &statbuf) == 0 | |
7874 | && statbuf.st_size > max | |
7875 | ) ) | |
7876 | { | |
7877 | topt |= topt_no_body; | |
7878 | dsnnotifyhdr = dsnlimitmsg; | |
420a0d19 | 7879 | } |
2ea97746 CE |
7880 | } |
7881 | ||
7882 | #ifdef SUPPORT_I18N | |
7883 | if (message_smtputf8) | |
7884 | fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n" | |
7885 | : "Content-type: message/global\n\n", | |
7886 | fp); | |
420a0d19 | 7887 | else |
2ea97746 CE |
7888 | #endif |
7889 | fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n" | |
7890 | : "Content-type: message/rfc822\n\n", | |
7891 | fp); | |
420a0d19 | 7892 | |
2ea97746 | 7893 | fflush(fp); |
420a0d19 CE |
7894 | transport_filter_argv = NULL; /* Just in case */ |
7895 | return_path = sender_address; /* In case not previously set */ | |
2ea97746 CE |
7896 | { /* Dummy transport for headers add */ |
7897 | transport_ctx tctx = {{0}}; | |
7898 | transport_instance tb = {0}; | |
7899 | ||
7900 | tctx.u.fd = fileno(fp); | |
7901 | tctx.tblock = &tb; | |
7902 | tctx.options = topt; | |
7903 | tb.add_headers = dsnnotifyhdr; | |
7904 | ||
7905 | /*XXX no checking for failure! buggy! */ | |
7906 | transport_write_message(&tctx, 0); | |
7907 | } | |
7908 | fflush(fp); | |
7909 | ||
420a0d19 CE |
7910 | /* we never add the final text. close the file */ |
7911 | if (emf) | |
7912 | (void)fclose(emf); | |
2ea97746 CE |
7913 | |
7914 | fprintf(fp, "\n--%s--\n", bound); | |
420a0d19 CE |
7915 | |
7916 | /* Close the file, which should send an EOF to the child process | |
7917 | that is receiving the message. Wait for it to finish. */ | |
7918 | ||
2ea97746 | 7919 | (void)fclose(fp); |
420a0d19 CE |
7920 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ |
7921 | ||
7922 | /* In the test harness, let the child do it's thing first. */ | |
7923 | ||
2ea97746 | 7924 | if (f.running_in_test_harness) millisleep(500); |
420a0d19 CE |
7925 | |
7926 | /* If the process failed, there was some disaster in setting up the | |
7927 | error message. Unless the message is very old, ensure that addr_defer | |
7928 | is non-null, which will have the effect of leaving the message on the | |
7929 | spool. The failed addresses will get tried again next time. However, we | |
7930 | don't really want this to happen too often, so freeze the message unless | |
7931 | there are some genuine deferred addresses to try. To do this we have | |
7932 | to call spool_write_header() here, because with no genuine deferred | |
7933 | addresses the normal code below doesn't get run. */ | |
7934 | ||
7935 | if (rc != 0) | |
7936 | { | |
7937 | uschar *s = US""; | |
2ea97746 | 7938 | if (now - received_time.tv_sec < retry_maximum_timeout && !addr_defer) |
420a0d19 CE |
7939 | { |
7940 | addr_defer = (address_item *)(+1); | |
2ea97746 | 7941 | f.deliver_freeze = TRUE; |
420a0d19 CE |
7942 | deliver_frozen_at = time(NULL); |
7943 | /* Panic-dies on error */ | |
7944 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7945 | s = US" (frozen)"; | |
7946 | } | |
7947 | deliver_msglog("Process failed (%d) when writing error message " | |
7948 | "to %s%s", rc, bounce_recipient, s); | |
7949 | log_write(0, LOG_MAIN, "Process failed (%d) when writing error message " | |
7950 | "to %s%s", rc, bounce_recipient, s); | |
7951 | } | |
7952 | ||
7953 | /* The message succeeded. Ensure that the recipients that failed are | |
7954 | now marked finished with on the spool and their parents updated. */ | |
7955 | ||
7956 | else | |
7957 | { | |
2ea97746 | 7958 | for (addr = handled_addr; addr; addr = addr->next) |
420a0d19 CE |
7959 | { |
7960 | address_done(addr, logtod); | |
7961 | child_done(addr, logtod); | |
7962 | } | |
7963 | /* Panic-dies on error */ | |
7964 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7965 | } | |
7966 | } | |
7967 | } | |
7968 | } | |
7969 | ||
2ea97746 | 7970 | f.disable_logging = FALSE; /* In case left set */ |
420a0d19 CE |
7971 | |
7972 | /* Come here from the mua_wrapper case if routing goes wrong */ | |
7973 | ||
7974 | DELIVERY_TIDYUP: | |
7975 | ||
7976 | /* If there are now no deferred addresses, we are done. Preserve the | |
7977 | message log if so configured, and we are using them. Otherwise, sling it. | |
7978 | Then delete the message itself. */ | |
7979 | ||
2ea97746 | 7980 | if (!addr_defer) |
420a0d19 | 7981 | { |
2ea97746 CE |
7982 | uschar * fname; |
7983 | ||
420a0d19 CE |
7984 | if (message_logs) |
7985 | { | |
2ea97746 | 7986 | fname = spool_fname(US"msglog", message_subdir, id, US""); |
420a0d19 CE |
7987 | if (preserve_message_logs) |
7988 | { | |
7989 | int rc; | |
2ea97746 CE |
7990 | uschar * moname = spool_fname(US"msglog.OLD", US"", id, US""); |
7991 | ||
7992 | if ((rc = Urename(fname, moname)) < 0) | |
420a0d19 | 7993 | { |
2ea97746 CE |
7994 | (void)directory_make(spool_directory, |
7995 | spool_sname(US"msglog.OLD", US""), | |
7996 | MSGLOG_DIRECTORY_MODE, TRUE); | |
7997 | rc = Urename(fname, moname); | |
420a0d19 CE |
7998 | } |
7999 | if (rc < 0) | |
8000 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the " | |
2ea97746 | 8001 | "msglog.OLD directory", fname); |
420a0d19 CE |
8002 | } |
8003 | else | |
2ea97746 | 8004 | if (Uunlink(fname) < 0) |
420a0d19 | 8005 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
2ea97746 | 8006 | fname, strerror(errno)); |
420a0d19 CE |
8007 | } |
8008 | ||
8009 | /* Remove the two message files. */ | |
8010 | ||
2ea97746 CE |
8011 | fname = spool_fname(US"input", message_subdir, id, US"-D"); |
8012 | if (Uunlink(fname) < 0) | |
420a0d19 | 8013 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
2ea97746 CE |
8014 | fname, strerror(errno)); |
8015 | fname = spool_fname(US"input", message_subdir, id, US"-H"); | |
8016 | if (Uunlink(fname) < 0) | |
420a0d19 | 8017 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
2ea97746 | 8018 | fname, strerror(errno)); |
420a0d19 CE |
8019 | |
8020 | /* Log the end of this message, with queue time if requested. */ | |
8021 | ||
2ea97746 CE |
8022 | if (LOGGING(queue_time_overall)) |
8023 | log_write(0, LOG_MAIN, "Completed QT=%s", string_timesince(&received_time)); | |
420a0d19 CE |
8024 | else |
8025 | log_write(0, LOG_MAIN, "Completed"); | |
8026 | ||
8027 | /* Unset deliver_freeze so that we won't try to move the spool files further down */ | |
2ea97746 CE |
8028 | f.deliver_freeze = FALSE; |
8029 | ||
8030 | #ifndef DISABLE_EVENT | |
8031 | (void) event_raise(event_action, US"msg:complete", NULL); | |
8032 | #endif | |
420a0d19 CE |
8033 | } |
8034 | ||
8035 | /* If there are deferred addresses, we are keeping this message because it is | |
8036 | not yet completed. Lose any temporary files that were catching output from | |
8037 | pipes for any of the deferred addresses, handle one-time aliases, and see if | |
8038 | the message has been on the queue for so long that it is time to send a warning | |
8039 | message to the sender, unless it is a mailer-daemon. If all deferred addresses | |
8040 | have the same domain, we can set deliver_domain for the expansion of | |
8041 | delay_warning_ condition - if any of them are pipes, files, or autoreplies, use | |
8042 | the parent's domain. | |
8043 | ||
8044 | If all the deferred addresses have an error number that indicates "retry time | |
8045 | not reached", skip sending the warning message, because it won't contain the | |
8046 | reason for the delay. It will get sent at the next real delivery attempt. | |
2ea97746 CE |
8047 | Exception: for retries caused by a remote peer we use the error message |
8048 | store in the retry DB as the reason. | |
420a0d19 CE |
8049 | However, if at least one address has tried, we'd better include all of them in |
8050 | the message. | |
8051 | ||
8052 | If we can't make a process to send the message, don't worry. | |
8053 | ||
8054 | For mailing list expansions we want to send the warning message to the | |
8055 | mailing list manager. We can't do a perfect job here, as some addresses may | |
8056 | have different errors addresses, but if we take the errors address from | |
8057 | each deferred address it will probably be right in most cases. | |
8058 | ||
8059 | If addr_defer == +1, it means there was a problem sending an error message | |
8060 | for failed addresses, and there were no "real" deferred addresses. The value | |
8061 | was set just to keep the message on the spool, so there is nothing to do here. | |
8062 | */ | |
8063 | ||
8064 | else if (addr_defer != (address_item *)(+1)) | |
8065 | { | |
8066 | address_item *addr; | |
8067 | uschar *recipients = US""; | |
2ea97746 | 8068 | BOOL want_warning_msg = FALSE; |
420a0d19 | 8069 | |
2ea97746 CE |
8070 | deliver_domain = testflag(addr_defer, af_pfr) |
8071 | ? addr_defer->parent->domain : addr_defer->domain; | |
420a0d19 | 8072 | |
2ea97746 | 8073 | for (addr = addr_defer; addr; addr = addr->next) |
420a0d19 CE |
8074 | { |
8075 | address_item *otaddr; | |
8076 | ||
2ea97746 | 8077 | if (addr->basic_errno > ERRNO_WARN_BASE) want_warning_msg = TRUE; |
420a0d19 | 8078 | |
2ea97746 | 8079 | if (deliver_domain) |
420a0d19 | 8080 | { |
2ea97746 CE |
8081 | const uschar *d = testflag(addr, af_pfr) |
8082 | ? addr->parent->domain : addr->domain; | |
420a0d19 CE |
8083 | |
8084 | /* The domain may be unset for an address that has never been routed | |
8085 | because the system filter froze the message. */ | |
8086 | ||
2ea97746 CE |
8087 | if (!d || Ustrcmp(d, deliver_domain) != 0) |
8088 | deliver_domain = NULL; | |
420a0d19 CE |
8089 | } |
8090 | ||
2ea97746 | 8091 | if (addr->return_filename) Uunlink(addr->return_filename); |
420a0d19 CE |
8092 | |
8093 | /* Handle the case of one-time aliases. If any address in the ancestry | |
8094 | of this one is flagged, ensure it is in the recipients list, suitably | |
8095 | flagged, and that its parent is marked delivered. */ | |
8096 | ||
2ea97746 CE |
8097 | for (otaddr = addr; otaddr; otaddr = otaddr->parent) |
8098 | if (otaddr->onetime_parent) break; | |
420a0d19 | 8099 | |
2ea97746 | 8100 | if (otaddr) |
420a0d19 CE |
8101 | { |
8102 | int i; | |
8103 | int t = recipients_count; | |
8104 | ||
8105 | for (i = 0; i < recipients_count; i++) | |
8106 | { | |
8107 | uschar *r = recipients_list[i].address; | |
8108 | if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i; | |
8109 | if (Ustrcmp(otaddr->address, r) == 0) break; | |
8110 | } | |
8111 | ||
8112 | /* Didn't find the address already in the list, and did find the | |
2ea97746 CE |
8113 | ultimate parent's address in the list, and they really are different |
8114 | (i.e. not from an identity-redirect). After adding the recipient, | |
420a0d19 CE |
8115 | update the errors address in the recipients list. */ |
8116 | ||
2ea97746 CE |
8117 | if ( i >= recipients_count && t < recipients_count |
8118 | && Ustrcmp(otaddr->address, otaddr->parent->address) != 0) | |
420a0d19 CE |
8119 | { |
8120 | DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n", | |
8121 | otaddr->address, otaddr->parent->address); | |
8122 | receive_add_recipient(otaddr->address, t); | |
2ea97746 | 8123 | recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address; |
420a0d19 CE |
8124 | tree_add_nonrecipient(otaddr->parent->address); |
8125 | update_spool = TRUE; | |
8126 | } | |
8127 | } | |
8128 | ||
8129 | /* Except for error messages, ensure that either the errors address for | |
8130 | this deferred address or, if there is none, the sender address, is on the | |
8131 | list of recipients for a warning message. */ | |
8132 | ||
2ea97746 | 8133 | if (sender_address[0]) |
420a0d19 | 8134 | { |
2ea97746 CE |
8135 | uschar * s = addr->prop.errors_address; |
8136 | if (!s) s = sender_address; | |
8137 | if (Ustrstr(recipients, s) == NULL) | |
8138 | recipients = string_sprintf("%s%s%s", recipients, | |
8139 | recipients[0] ? "," : "", s); | |
420a0d19 CE |
8140 | } |
8141 | } | |
8142 | ||
8143 | /* Send a warning message if the conditions are right. If the condition check | |
8144 | fails because of a lookup defer, there is nothing we can do. The warning | |
8145 | is not sent. Another attempt will be made at the next delivery attempt (if | |
8146 | it also defers). */ | |
8147 | ||
2ea97746 CE |
8148 | if ( !f.queue_2stage |
8149 | && want_warning_msg | |
8150 | && ( !(addr_defer->dsn_flags & rf_dsnflags) | |
8151 | || addr_defer->dsn_flags & rf_notify_delay | |
8152 | ) | |
8153 | && delay_warning[1] > 0 | |
8154 | && sender_address[0] != 0 | |
8155 | && ( !delay_warning_condition | |
8156 | || expand_check_condition(delay_warning_condition, | |
8157 | US"delay_warning", US"option") | |
8158 | ) | |
8159 | ) | |
420a0d19 CE |
8160 | { |
8161 | int count; | |
8162 | int show_time; | |
2ea97746 | 8163 | int queue_time = time(NULL) - received_time.tv_sec; |
420a0d19 CE |
8164 | |
8165 | /* When running in the test harness, there's an option that allows us to | |
8166 | fudge this time so as to get repeatability of the tests. Take the first | |
8167 | time off the list. In queue runs, the list pointer gets updated in the | |
8168 | calling process. */ | |
8169 | ||
2ea97746 | 8170 | if (f.running_in_test_harness && fudged_queue_times[0] != 0) |
420a0d19 CE |
8171 | { |
8172 | int qt = readconf_readtime(fudged_queue_times, '/', FALSE); | |
8173 | if (qt >= 0) | |
8174 | { | |
8175 | DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n", | |
8176 | fudged_queue_times); | |
8177 | queue_time = qt; | |
8178 | } | |
8179 | } | |
8180 | ||
8181 | /* See how many warnings we should have sent by now */ | |
8182 | ||
8183 | for (count = 0; count < delay_warning[1]; count++) | |
8184 | if (queue_time < delay_warning[count+2]) break; | |
8185 | ||
8186 | show_time = delay_warning[count+1]; | |
8187 | ||
8188 | if (count >= delay_warning[1]) | |
8189 | { | |
8190 | int extra; | |
8191 | int last_gap = show_time; | |
8192 | if (count > 1) last_gap -= delay_warning[count]; | |
8193 | extra = (queue_time - delay_warning[count+1])/last_gap; | |
8194 | show_time += last_gap * extra; | |
8195 | count += extra; | |
8196 | } | |
8197 | ||
8198 | DEBUG(D_deliver) | |
8199 | { | |
2ea97746 | 8200 | debug_printf("time on queue = %s id %s addr %s\n", readconf_printtime(queue_time), message_id, addr_defer->address); |
420a0d19 CE |
8201 | debug_printf("warning counts: required %d done %d\n", count, |
8202 | warning_count); | |
8203 | } | |
8204 | ||
8205 | /* We have computed the number of warnings there should have been by now. | |
8206 | If there haven't been enough, send one, and up the count to what it should | |
8207 | have been. */ | |
8208 | ||
8209 | if (warning_count < count) | |
8210 | { | |
8211 | header_line *h; | |
8212 | int fd; | |
8213 | pid_t pid = child_open_exim(&fd); | |
8214 | ||
8215 | if (pid > 0) | |
8216 | { | |
8217 | uschar *wmf_text; | |
8218 | FILE *wmf = NULL; | |
8219 | FILE *f = fdopen(fd, "wb"); | |
2ea97746 CE |
8220 | uschar * bound; |
8221 | transport_ctx tctx = {{0}}; | |
420a0d19 CE |
8222 | |
8223 | if (warn_message_file) | |
2ea97746 | 8224 | if (!(wmf = Ufopen(warn_message_file, "rb"))) |
420a0d19 CE |
8225 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning " |
8226 | "message texts: %s", warn_message_file, strerror(errno)); | |
420a0d19 CE |
8227 | |
8228 | warnmsg_recipients = recipients; | |
2ea97746 CE |
8229 | warnmsg_delay = queue_time < 120*60 |
8230 | ? string_sprintf("%d minutes", show_time/60) | |
8231 | : string_sprintf("%d hours", show_time/3600); | |
420a0d19 CE |
8232 | |
8233 | if (errors_reply_to) | |
8234 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
8235 | fprintf(f, "Auto-Submitted: auto-replied\n"); | |
8236 | moan_write_from(f); | |
8237 | fprintf(f, "To: %s\n", recipients); | |
8238 | ||
420a0d19 | 8239 | /* generated boundary string and output MIME-Headers */ |
2ea97746 | 8240 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
420a0d19 CE |
8241 | |
8242 | fprintf(f, "Content-Type: multipart/report;" | |
8243 | " report-type=delivery-status; boundary=%s\n" | |
8244 | "MIME-Version: 1.0\n", | |
2ea97746 | 8245 | bound); |
420a0d19 CE |
8246 | |
8247 | if ((wmf_text = next_emf(wmf, US"header"))) | |
8248 | fprintf(f, "%s\n", wmf_text); | |
8249 | else | |
8250 | fprintf(f, "Subject: Warning: message %s delayed %s\n\n", | |
8251 | message_id, warnmsg_delay); | |
8252 | ||
420a0d19 CE |
8253 | /* output human readable part as text/plain section */ |
8254 | fprintf(f, "--%s\n" | |
8255 | "Content-type: text/plain; charset=us-ascii\n\n", | |
2ea97746 | 8256 | bound); |
420a0d19 CE |
8257 | |
8258 | if ((wmf_text = next_emf(wmf, US"intro"))) | |
8259 | fprintf(f, "%s", CS wmf_text); | |
8260 | else | |
8261 | { | |
8262 | fprintf(f, | |
8263 | "This message was created automatically by mail delivery software.\n"); | |
8264 | ||
8265 | if (Ustrcmp(recipients, sender_address) == 0) | |
8266 | fprintf(f, | |
8267 | "A message that you sent has not yet been delivered to one or more of its\n" | |
8268 | "recipients after more than "); | |
8269 | ||
8270 | else | |
8271 | fprintf(f, | |
8272 | "A message sent by\n\n <%s>\n\n" | |
8273 | "has not yet been delivered to one or more of its recipients after more than \n", | |
8274 | sender_address); | |
8275 | ||
8276 | fprintf(f, "%s on the queue on %s.\n\n" | |
8277 | "The message identifier is: %s\n", | |
8278 | warnmsg_delay, primary_hostname, message_id); | |
8279 | ||
2ea97746 | 8280 | for (h = header_list; h; h = h->next) |
420a0d19 CE |
8281 | if (strncmpic(h->text, US"Subject:", 8) == 0) |
8282 | fprintf(f, "The subject of the message is: %s", h->text + 9); | |
8283 | else if (strncmpic(h->text, US"Date:", 5) == 0) | |
8284 | fprintf(f, "The date of the message is: %s", h->text + 6); | |
8285 | fputc('\n', f); | |
8286 | ||
8287 | fprintf(f, "The address%s to which the message has not yet been " | |
8288 | "delivered %s:\n", | |
8289 | !addr_defer->next ? "" : "es", | |
8290 | !addr_defer->next ? "is": "are"); | |
8291 | } | |
8292 | ||
8293 | /* List the addresses, with error information if allowed */ | |
8294 | ||
420a0d19 CE |
8295 | /* store addr_defer for machine readable part */ |
8296 | address_item *addr_dsndefer = addr_defer; | |
420a0d19 CE |
8297 | fputc('\n', f); |
8298 | while (addr_defer) | |
8299 | { | |
8300 | address_item *addr = addr_defer; | |
8301 | addr_defer = addr->next; | |
8302 | if (print_address_information(addr, f, US" ", US"\n ", US"")) | |
8303 | print_address_error(addr, f, US"Delay reason: "); | |
8304 | fputc('\n', f); | |
8305 | } | |
8306 | fputc('\n', f); | |
8307 | ||
8308 | /* Final text */ | |
8309 | ||
8310 | if (wmf) | |
8311 | { | |
8312 | if ((wmf_text = next_emf(wmf, US"final"))) | |
8313 | fprintf(f, "%s", CS wmf_text); | |
8314 | (void)fclose(wmf); | |
8315 | } | |
8316 | else | |
8317 | { | |
8318 | fprintf(f, | |
8319 | "No action is required on your part. Delivery attempts will continue for\n" | |
8320 | "some time, and this warning may be repeated at intervals if the message\n" | |
8321 | "remains undelivered. Eventually the mail delivery software will give up,\n" | |
8322 | "and when that happens, the message will be returned to you.\n"); | |
8323 | } | |
8324 | ||
420a0d19 CE |
8325 | /* output machine readable part */ |
8326 | fprintf(f, "\n--%s\n" | |
8327 | "Content-type: message/delivery-status\n\n" | |
8328 | "Reporting-MTA: dns; %s\n", | |
2ea97746 | 8329 | bound, |
420a0d19 | 8330 | smtp_active_hostname); |
2ea97746 | 8331 | |
420a0d19 CE |
8332 | |
8333 | if (dsn_envid) | |
8334 | { | |
8335 | /* must be decoded from xtext: see RFC 3461:6.3a */ | |
8336 | uschar *xdec_envid; | |
8337 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
8338 | fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid); | |
8339 | else | |
2ea97746 | 8340 | fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
420a0d19 CE |
8341 | } |
8342 | fputc('\n', f); | |
8343 | ||
2ea97746 | 8344 | for ( ; addr_dsndefer; addr_dsndefer = addr_dsndefer->next) |
420a0d19 CE |
8345 | { |
8346 | if (addr_dsndefer->dsn_orcpt) | |
2ea97746 | 8347 | fprintf(f, "Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt); |
420a0d19 | 8348 | |
2ea97746 CE |
8349 | fprintf(f, "Action: delayed\n" |
8350 | "Final-Recipient: rfc822;%s\n" | |
8351 | "Status: 4.0.0\n", | |
8352 | addr_dsndefer->address); | |
420a0d19 | 8353 | if (addr_dsndefer->host_used && addr_dsndefer->host_used->name) |
2ea97746 CE |
8354 | { |
8355 | fprintf(f, "Remote-MTA: dns; %s\n", | |
8356 | addr_dsndefer->host_used->name); | |
8357 | print_dsn_diagnostic_code(addr_dsndefer, f); | |
8358 | } | |
8359 | fputc('\n', f); | |
420a0d19 CE |
8360 | } |
8361 | ||
2ea97746 | 8362 | fprintf(f, "--%s\n" |
420a0d19 | 8363 | "Content-type: text/rfc822-headers\n\n", |
2ea97746 | 8364 | bound); |
420a0d19 CE |
8365 | |
8366 | fflush(f); | |
8367 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
2ea97746 CE |
8368 | tctx.u.fd = fileno(f); |
8369 | tctx.options = topt_add_return_path | topt_no_body; | |
420a0d19 CE |
8370 | transport_filter_argv = NULL; /* Just in case */ |
8371 | return_path = sender_address; /* In case not previously set */ | |
2ea97746 | 8372 | |
420a0d19 | 8373 | /* Write the original email out */ |
2ea97746 CE |
8374 | /*XXX no checking for failure! buggy! */ |
8375 | transport_write_message(&tctx, 0); | |
420a0d19 CE |
8376 | fflush(f); |
8377 | ||
2ea97746 | 8378 | fprintf(f,"\n--%s--\n", bound); |
420a0d19 CE |
8379 | |
8380 | fflush(f); | |
420a0d19 CE |
8381 | |
8382 | /* Close and wait for child process to complete, without a timeout. | |
8383 | If there's an error, don't update the count. */ | |
8384 | ||
8385 | (void)fclose(f); | |
8386 | if (child_close(pid, 0) == 0) | |
8387 | { | |
8388 | warning_count = count; | |
8389 | update_spool = TRUE; /* Ensure spool rewritten */ | |
8390 | } | |
8391 | } | |
8392 | } | |
8393 | } | |
8394 | ||
8395 | /* Clear deliver_domain */ | |
8396 | ||
8397 | deliver_domain = NULL; | |
8398 | ||
8399 | /* If this was a first delivery attempt, unset the first time flag, and | |
8400 | ensure that the spool gets updated. */ | |
8401 | ||
2ea97746 | 8402 | if (f.deliver_firsttime) |
420a0d19 | 8403 | { |
2ea97746 | 8404 | f.deliver_firsttime = FALSE; |
420a0d19 CE |
8405 | update_spool = TRUE; |
8406 | } | |
8407 | ||
8408 | /* If delivery was frozen and freeze_tell is set, generate an appropriate | |
8409 | message, unless the message is a local error message (to avoid loops). Then | |
8410 | log the freezing. If the text in "frozen_info" came from a system filter, | |
8411 | it has been escaped into printing characters so as not to mess up log lines. | |
8412 | For the "tell" message, we turn \n back into newline. Also, insert a newline | |
8413 | near the start instead of the ": " string. */ | |
8414 | ||
2ea97746 | 8415 | if (f.deliver_freeze) |
420a0d19 | 8416 | { |
2ea97746 | 8417 | if (freeze_tell && freeze_tell[0] != 0 && !f.local_error_message) |
420a0d19 CE |
8418 | { |
8419 | uschar *s = string_copy(frozen_info); | |
8420 | uschar *ss = Ustrstr(s, " by the system filter: "); | |
8421 | ||
8422 | if (ss != NULL) | |
8423 | { | |
8424 | ss[21] = '.'; | |
8425 | ss[22] = '\n'; | |
8426 | } | |
8427 | ||
8428 | ss = s; | |
8429 | while (*ss != 0) | |
8430 | { | |
8431 | if (*ss == '\\' && ss[1] == 'n') | |
8432 | { | |
8433 | *ss++ = ' '; | |
8434 | *ss++ = '\n'; | |
8435 | } | |
8436 | else ss++; | |
8437 | } | |
8438 | moan_tell_someone(freeze_tell, addr_defer, US"Message frozen", | |
8439 | "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id, | |
8440 | s, sender_address); | |
8441 | } | |
8442 | ||
8443 | /* Log freezing just before we update the -H file, to minimize the chance | |
8444 | of a race problem. */ | |
8445 | ||
8446 | deliver_msglog("*** Frozen%s\n", frozen_info); | |
8447 | log_write(0, LOG_MAIN, "Frozen%s", frozen_info); | |
8448 | } | |
8449 | ||
8450 | /* If there have been any updates to the non-recipients list, or other things | |
8451 | that get written to the spool, we must now update the spool header file so | |
8452 | that it has the right information for the next delivery attempt. If there | |
8453 | was more than one address being delivered, the header_change update is done | |
8454 | earlier, in case one succeeds and then something crashes. */ | |
8455 | ||
8456 | DEBUG(D_deliver) | |
8457 | debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n", | |
2ea97746 | 8458 | update_spool, f.header_rewritten); |
420a0d19 | 8459 | |
2ea97746 | 8460 | if (update_spool || f.header_rewritten) |
420a0d19 CE |
8461 | /* Panic-dies on error */ |
8462 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
8463 | } | |
8464 | ||
8465 | /* Finished with the message log. If the message is complete, it will have | |
8466 | been unlinked or renamed above. */ | |
8467 | ||
8468 | if (message_logs) (void)fclose(message_log); | |
8469 | ||
8470 | /* Now we can close and remove the journal file. Its only purpose is to record | |
8471 | successfully completed deliveries asap so that this information doesn't get | |
8472 | lost if Exim (or the machine) crashes. Forgetting about a failed delivery is | |
8473 | not serious, as trying it again is not harmful. The journal might not be open | |
8474 | if all addresses were deferred at routing or directing. Nevertheless, we must | |
8475 | remove it if it exists (may have been lying around from a crash during the | |
8476 | previous delivery attempt). We don't remove the journal if a delivery | |
8477 | subprocess failed to pass back delivery information; this is controlled by | |
8478 | the remove_journal flag. When the journal is left, we also don't move the | |
8479 | message off the main spool if frozen and the option is set. It should get moved | |
8480 | at the next attempt, after the journal has been inspected. */ | |
8481 | ||
8482 | if (journal_fd >= 0) (void)close(journal_fd); | |
8483 | ||
8484 | if (remove_journal) | |
8485 | { | |
2ea97746 CE |
8486 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
8487 | ||
8488 | if (Uunlink(fname) < 0 && errno != ENOENT) | |
8489 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", fname, | |
420a0d19 CE |
8490 | strerror(errno)); |
8491 | ||
2ea97746 | 8492 | /* Move the message off the spool if requested */ |
420a0d19 | 8493 | |
2ea97746 CE |
8494 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
8495 | if (f.deliver_freeze && move_frozen_messages) | |
420a0d19 | 8496 | (void)spool_move_message(id, message_subdir, US"", US"F"); |
2ea97746 | 8497 | #endif |
420a0d19 CE |
8498 | } |
8499 | ||
8500 | /* Closing the data file frees the lock; if the file has been unlinked it | |
8501 | will go away. Otherwise the message becomes available for another process | |
8502 | to try delivery. */ | |
8503 | ||
8504 | (void)close(deliver_datafile); | |
8505 | deliver_datafile = -1; | |
8506 | DEBUG(D_deliver) debug_printf("end delivery of %s\n", id); | |
8507 | ||
8508 | /* It is unlikely that there will be any cached resources, since they are | |
8509 | released after routing, and in the delivery subprocesses. However, it's | |
8510 | possible for an expansion for something afterwards (for example, | |
8511 | expand_check_condition) to do a lookup. We must therefore be sure everything is | |
8512 | released. */ | |
8513 | ||
8514 | search_tidyup(); | |
8515 | acl_where = ACL_WHERE_UNKNOWN; | |
8516 | return final_yield; | |
8517 | } | |
8518 | ||
2ea97746 CE |
8519 | |
8520 | ||
8521 | void | |
8522 | deliver_init(void) | |
8523 | { | |
8524 | #ifdef EXIM_TFO_PROBE | |
8525 | tfo_probe(); | |
8526 | #else | |
8527 | f.tcp_fastopen_ok = TRUE; | |
8528 | #endif | |
8529 | ||
8530 | ||
8531 | if (!regex_PIPELINING) regex_PIPELINING = | |
8532 | regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE); | |
8533 | ||
8534 | if (!regex_SIZE) regex_SIZE = | |
8535 | regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE); | |
8536 | ||
8537 | if (!regex_AUTH) regex_AUTH = | |
8538 | regex_must_compile(AUTHS_REGEX, FALSE, TRUE); | |
8539 | ||
8540 | #ifdef SUPPORT_TLS | |
8541 | if (!regex_STARTTLS) regex_STARTTLS = | |
8542 | regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE); | |
8543 | ||
8544 | # ifdef EXPERIMENTAL_REQUIRETLS | |
8545 | if (!regex_REQUIRETLS) regex_REQUIRETLS = | |
8546 | regex_must_compile(US"\\n250[\\s\\-]REQUIRETLS(\\s|\\n|$)", FALSE, TRUE); | |
8547 | # endif | |
8548 | #endif | |
8549 | ||
8550 | if (!regex_CHUNKING) regex_CHUNKING = | |
8551 | regex_must_compile(US"\\n250[\\s\\-]CHUNKING(\\s|\\n|$)", FALSE, TRUE); | |
8552 | ||
8553 | #ifndef DISABLE_PRDR | |
8554 | if (!regex_PRDR) regex_PRDR = | |
8555 | regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE); | |
8556 | #endif | |
8557 | ||
8558 | #ifdef SUPPORT_I18N | |
8559 | if (!regex_UTF8) regex_UTF8 = | |
8560 | regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE); | |
8561 | #endif | |
8562 | ||
8563 | if (!regex_DSN) regex_DSN = | |
8564 | regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE); | |
8565 | ||
8566 | if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA = | |
8567 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
8568 | ||
8569 | #ifdef EXPERIMENTAL_PIPE_CONNECT | |
8570 | if (!regex_EARLY_PIPE) regex_EARLY_PIPE = | |
8571 | regex_must_compile(US"\\n250[\\s\\-]" EARLY_PIPE_FEATURE_NAME "(\\s|\\n|$)", FALSE, TRUE); | |
8572 | #endif | |
8573 | } | |
8574 | ||
8575 | ||
8576 | uschar * | |
8577 | deliver_get_sender_address (uschar * id) | |
8578 | { | |
8579 | int rc; | |
8580 | uschar * new_sender_address, | |
8581 | * save_sender_address; | |
8582 | BOOL save_qr = f.queue_running; | |
8583 | uschar * spoolname; | |
8584 | ||
8585 | /* make spool_open_datafile non-noisy on fail */ | |
8586 | ||
8587 | f.queue_running = TRUE; | |
8588 | ||
8589 | /* Side effect: message_subdir is set for the (possibly split) spool directory */ | |
8590 | ||
8591 | deliver_datafile = spool_open_datafile(id); | |
8592 | f.queue_running = save_qr; | |
8593 | if (deliver_datafile < 0) | |
8594 | return NULL; | |
8595 | ||
8596 | /* Save and restore the global sender_address. I'm not sure if we should | |
8597 | not save/restore all the other global variables too, because | |
8598 | spool_read_header() may change all of them. But OTOH, when this | |
8599 | deliver_get_sender_address() gets called, the current message is done | |
8600 | already and nobody needs the globals anymore. (HS12, 2015-08-21) */ | |
8601 | ||
8602 | spoolname = string_sprintf("%s-H", id); | |
8603 | save_sender_address = sender_address; | |
8604 | ||
8605 | rc = spool_read_header(spoolname, TRUE, TRUE); | |
8606 | ||
8607 | new_sender_address = sender_address; | |
8608 | sender_address = save_sender_address; | |
8609 | ||
8610 | if (rc != spool_read_OK) | |
8611 | return NULL; | |
8612 | ||
8613 | assert(new_sender_address); | |
8614 | ||
8615 | (void)close(deliver_datafile); | |
8616 | deliver_datafile = -1; | |
8617 | ||
8618 | return new_sender_address; | |
8619 | } | |
8620 | ||
8621 | ||
8622 | ||
8623 | void | |
8624 | delivery_re_exec(int exec_type) | |
8625 | { | |
8626 | uschar * where; | |
8627 | ||
8628 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) | |
8629 | { | |
8630 | int channel_fd = cutthrough.cctx.sock; | |
8631 | ||
8632 | smtp_peer_options = cutthrough.peer_options; | |
8633 | continue_sequence = 0; | |
8634 | ||
8635 | #ifdef SUPPORT_TLS | |
8636 | if (cutthrough.is_tls) | |
8637 | { | |
8638 | int pfd[2], pid; | |
8639 | ||
8640 | smtp_peer_options |= OPTION_TLS; | |
8641 | sending_ip_address = cutthrough.snd_ip; | |
8642 | sending_port = cutthrough.snd_port; | |
8643 | ||
8644 | where = US"socketpair"; | |
8645 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) != 0) | |
8646 | goto fail; | |
8647 | ||
8648 | where = US"fork"; | |
8649 | if ((pid = fork()) < 0) | |
8650 | goto fail; | |
8651 | ||
8652 | else if (pid == 0) /* child: fork again to totally disconnect */ | |
8653 | { | |
8654 | if (f.running_in_test_harness) millisleep(100); /* let parent debug out */ | |
8655 | /* does not return */ | |
8656 | smtp_proxy_tls(cutthrough.cctx.tls_ctx, big_buffer, big_buffer_size, | |
8657 | pfd, 5*60); | |
8658 | } | |
8659 | ||
8660 | DEBUG(D_transport) debug_printf("proxy-proc inter-pid %d\n", pid); | |
8661 | close(pfd[0]); | |
8662 | waitpid(pid, NULL, 0); | |
8663 | (void) close(channel_fd); /* release the client socket */ | |
8664 | channel_fd = pfd[1]; | |
8665 | } | |
8666 | #endif | |
8667 | ||
8668 | transport_do_pass_socket(cutthrough.transport, cutthrough.host.name, | |
8669 | cutthrough.host.address, message_id, channel_fd); | |
8670 | } | |
8671 | else | |
8672 | { | |
8673 | cancel_cutthrough_connection(TRUE, US"non-continued delivery"); | |
8674 | (void) child_exec_exim(exec_type, FALSE, NULL, FALSE, 2, US"-Mc", message_id); | |
8675 | } | |
8676 | return; /* compiler quietening; control does not reach here. */ | |
8677 | ||
8678 | #ifdef SUPPORT_TLS | |
8679 | fail: | |
8680 | log_write(0, | |
8681 | LOG_MAIN | (exec_type == CEE_EXEC_EXIT ? LOG_PANIC : LOG_PANIC_DIE), | |
8682 | "delivery re-exec %s failed: %s", where, strerror(errno)); | |
8683 | ||
8684 | /* Get here if exec_type == CEE_EXEC_EXIT. | |
8685 | Note: this must be _exit(), not exit(). */ | |
8686 | ||
8687 | _exit(EX_EXECFAILED); | |
8688 | #endif | |
8689 | } | |
8690 | ||
420a0d19 CE |
8691 | /* vi: aw ai sw=2 |
8692 | */ | |
8693 | /* End of deliver.c */ |