Commit | Line | Data |
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059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
f9ba5e22 | 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
059ec3d9 PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | /* The main code for delivering a message. */ | |
9 | ||
10 | ||
11 | #include "exim.h" | |
e39fdc85 | 12 | #include "transports/smtp.h" |
c29da374 | 13 | #include <sys/uio.h> |
dadff1d4 | 14 | #include <assert.h> |
059ec3d9 PH |
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; | |
6c1c3d1d WB |
69 | static address_item *addr_dsntmp = NULL; |
70 | static address_item *addr_senddsn = NULL; | |
059ec3d9 PH |
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 | ||
059ec3d9 PH |
81 | |
82 | ||
ee250936 JH |
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 | ||
128 | ||
059ec3d9 PH |
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 | { | |
d6c82d7b | 175 | if (!addr) |
059ec3d9 | 176 | { |
55414b25 | 177 | const uschar ***p = address_expansions; |
d6c82d7b | 178 | while (*p) **p++ = NULL; |
059ec3d9 PH |
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 | ||
d6c82d7b | 186 | if (!addr->host_list) |
059ec3d9 PH |
187 | { |
188 | deliver_host = deliver_host_address = US""; | |
a7538db1 | 189 | deliver_host_port = 0; |
059ec3d9 PH |
190 | } |
191 | else | |
192 | { | |
193 | deliver_host = addr->host_list->name; | |
194 | deliver_host_address = addr->host_list->address; | |
a7538db1 | 195 | deliver_host_port = addr->host_list->port; |
059ec3d9 PH |
196 | } |
197 | ||
198 | deliver_recipients = addr; | |
d43cbe25 JH |
199 | deliver_address_data = addr->prop.address_data; |
200 | deliver_domain_data = addr->prop.domain_data; | |
201 | deliver_localpart_data = addr->prop.localpart_data; | |
059ec3d9 PH |
202 | |
203 | /* These may be unset for multiple addresses */ | |
204 | ||
205 | deliver_domain = addr->domain; | |
206 | self_hostname = addr->self_hostname; | |
207 | ||
8523533c TK |
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 | ||
059ec3d9 PH |
215 | /* If there's only one address we can set everything. */ |
216 | ||
d6c82d7b | 217 | if (!addr->next) |
059ec3d9 PH |
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 | ||
d6c82d7b | 225 | for (addr_orig = addr; addr_orig->parent; addr_orig = addr_orig->parent) ; |
059ec3d9 PH |
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 | ||
d6c82d7b JH |
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; | |
059ec3d9 PH |
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 | ||
d6c82d7b | 245 | if (addr->parent) |
059ec3d9 PH |
246 | { |
247 | deliver_domain_parent = addr->parent->domain; | |
d6c82d7b JH |
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; | |
059ec3d9 PH |
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 | { | |
d6c82d7b JH |
259 | if (testflag(addr, af_file)) address_file = addr->local_part; |
260 | else if (deliver_localpart[0] == '|') address_pipe = addr->local_part; | |
059ec3d9 PH |
261 | deliver_localpart = addr->parent->local_part; |
262 | deliver_localpart_prefix = addr->parent->prefix; | |
263 | deliver_localpart_suffix = addr->parent->suffix; | |
264 | } | |
265 | } | |
8523533c TK |
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 */ | |
d6c82d7b | 274 | if (bmi_deliver == 1) |
8523533c | 275 | bmi_alt_location = bmi_get_alt_location(bmi_base64_verdict); |
8523533c TK |
276 | #endif |
277 | ||
059ec3d9 PH |
278 | } |
279 | ||
280 | /* For multiple addresses, don't set local part, and leave the domain and | |
f7fd3850 PH |
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. */ | |
059ec3d9 PH |
284 | |
285 | else | |
286 | { | |
f7fd3850 PH |
287 | if (testflag(addr, af_pfr)) |
288 | { | |
d6c82d7b JH |
289 | if (testflag(addr, af_file)) address_file = addr->local_part; |
290 | else if (addr->local_part[0] == '|') address_pipe = addr->local_part; | |
f7fd3850 | 291 | } |
d7978c0f | 292 | for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 | 293 | { |
d6c82d7b | 294 | if (deliver_domain && Ustrcmp(deliver_domain, addr2->domain) != 0) |
059ec3d9 | 295 | deliver_domain = NULL; |
d6c82d7b JH |
296 | if ( self_hostname |
297 | && ( !addr2->self_hostname | |
298 | || Ustrcmp(self_hostname, addr2->self_hostname) != 0 | |
299 | ) ) | |
059ec3d9 | 300 | self_hostname = NULL; |
d6c82d7b | 301 | if (!deliver_domain && !self_hostname) break; |
059ec3d9 PH |
302 | } |
303 | } | |
304 | } | |
305 | ||
306 | ||
307 | ||
308 | ||
309 | /************************************************* | |
310 | * Open a msglog file * | |
311 | *************************************************/ | |
312 | ||
313 | /* This function is used both for normal message logs, and for files in the | |
314 | msglog directory that are used to catch output from pipes. Try to create the | |
315 | directory if it does not exist. From release 4.21, normal message logs should | |
316 | be created when the message is received. | |
317 | ||
92b0827a JH |
318 | Called from deliver_message(), can be operating as root. |
319 | ||
059ec3d9 PH |
320 | Argument: |
321 | filename the file name | |
322 | mode the mode required | |
323 | error used for saying what failed | |
324 | ||
325 | Returns: a file descriptor, or -1 (with errno set) | |
326 | */ | |
327 | ||
328 | static int | |
329 | open_msglog_file(uschar *filename, int mode, uschar **error) | |
330 | { | |
d7978c0f | 331 | for (int i = 2; i > 0; i--) |
059ec3d9 | 332 | { |
d7978c0f | 333 | int fd = Uopen(filename, |
92b0827a JH |
334 | #ifdef O_CLOEXEC |
335 | O_CLOEXEC | | |
336 | #endif | |
337 | #ifdef O_NOFOLLOW | |
338 | O_NOFOLLOW | | |
339 | #endif | |
340 | O_WRONLY|O_APPEND|O_CREAT, mode); | |
341 | if (fd >= 0) | |
342 | { | |
343 | /* Set the close-on-exec flag and change the owner to the exim uid/gid (this | |
344 | function is called as root). Double check the mode, because the group setting | |
345 | doesn't always get set automatically. */ | |
346 | ||
347 | #ifndef O_CLOEXEC | |
348 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); | |
349 | #endif | |
350 | if (fchown(fd, exim_uid, exim_gid) < 0) | |
351 | { | |
352 | *error = US"chown"; | |
353 | return -1; | |
354 | } | |
355 | if (fchmod(fd, mode) < 0) | |
356 | { | |
357 | *error = US"chmod"; | |
358 | return -1; | |
359 | } | |
360 | return fd; | |
361 | } | |
362 | if (errno != ENOENT) | |
363 | break; | |
364 | ||
41313d92 JH |
365 | (void)directory_make(spool_directory, |
366 | spool_sname(US"msglog", message_subdir), | |
367 | MSGLOG_DIRECTORY_MODE, TRUE); | |
059ec3d9 | 368 | } |
059ec3d9 | 369 | |
92b0827a JH |
370 | *error = US"create"; |
371 | return -1; | |
059ec3d9 PH |
372 | } |
373 | ||
374 | ||
375 | ||
376 | ||
377 | /************************************************* | |
378 | * Write to msglog if required * | |
379 | *************************************************/ | |
380 | ||
381 | /* Write to the message log, if configured. This function may also be called | |
382 | from transports. | |
383 | ||
384 | Arguments: | |
385 | format a string format | |
386 | ||
387 | Returns: nothing | |
388 | */ | |
389 | ||
390 | void | |
391 | deliver_msglog(const char *format, ...) | |
392 | { | |
393 | va_list ap; | |
394 | if (!message_logs) return; | |
395 | va_start(ap, format); | |
396 | vfprintf(message_log, format, ap); | |
397 | fflush(message_log); | |
398 | va_end(ap); | |
399 | } | |
400 | ||
401 | ||
402 | ||
403 | ||
404 | /************************************************* | |
405 | * Replicate status for batch * | |
406 | *************************************************/ | |
407 | ||
408 | /* When a transport handles a batch of addresses, it may treat them | |
409 | individually, or it may just put the status in the first one, and return FALSE, | |
410 | requesting that the status be copied to all the others externally. This is the | |
411 | replication function. As well as the status, it copies the transport pointer, | |
412 | which may have changed if appendfile passed the addresses on to a different | |
413 | transport. | |
414 | ||
415 | Argument: pointer to the first address in a chain | |
416 | Returns: nothing | |
417 | */ | |
418 | ||
419 | static void | |
420 | replicate_status(address_item *addr) | |
421 | { | |
d7978c0f | 422 | for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 | 423 | { |
d6c82d7b | 424 | addr2->transport = addr->transport; |
059ec3d9 | 425 | addr2->transport_return = addr->transport_return; |
d6c82d7b JH |
426 | addr2->basic_errno = addr->basic_errno; |
427 | addr2->more_errno = addr->more_errno; | |
32dfdf8b | 428 | addr2->delivery_usec = addr->delivery_usec; |
d6c82d7b JH |
429 | addr2->special_action = addr->special_action; |
430 | addr2->message = addr->message; | |
431 | addr2->user_message = addr->user_message; | |
059ec3d9 PH |
432 | } |
433 | } | |
434 | ||
435 | ||
436 | ||
437 | /************************************************* | |
438 | * Compare lists of hosts * | |
439 | *************************************************/ | |
440 | ||
441 | /* This function is given two pointers to chains of host items, and it yields | |
442 | TRUE if the lists refer to the same hosts in the same order, except that | |
443 | ||
444 | (1) Multiple hosts with the same non-negative MX values are permitted to appear | |
445 | in different orders. Round-robinning nameservers can cause this to happen. | |
446 | ||
447 | (2) Multiple hosts with the same negative MX values less than MX_NONE are also | |
448 | permitted to appear in different orders. This is caused by randomizing | |
449 | hosts lists. | |
450 | ||
451 | This enables Exim to use a single SMTP transaction for sending to two entirely | |
452 | different domains that happen to end up pointing at the same hosts. | |
453 | ||
454 | Arguments: | |
455 | one points to the first host list | |
456 | two points to the second host list | |
457 | ||
458 | Returns: TRUE if the lists refer to the same host set | |
459 | */ | |
460 | ||
461 | static BOOL | |
462 | same_hosts(host_item *one, host_item *two) | |
463 | { | |
d6c82d7b | 464 | while (one && two) |
059ec3d9 PH |
465 | { |
466 | if (Ustrcmp(one->name, two->name) != 0) | |
467 | { | |
468 | int mx = one->mx; | |
469 | host_item *end_one = one; | |
470 | host_item *end_two = two; | |
471 | ||
472 | /* Batch up only if there was no MX and the list was not randomized */ | |
473 | ||
474 | if (mx == MX_NONE) return FALSE; | |
475 | ||
476 | /* Find the ends of the shortest sequence of identical MX values */ | |
477 | ||
d6c82d7b JH |
478 | while ( end_one->next && end_one->next->mx == mx |
479 | && end_two->next && end_two->next->mx == mx) | |
059ec3d9 PH |
480 | { |
481 | end_one = end_one->next; | |
482 | end_two = end_two->next; | |
483 | } | |
484 | ||
485 | /* If there aren't any duplicates, there's no match. */ | |
486 | ||
487 | if (end_one == one) return FALSE; | |
488 | ||
489 | /* For each host in the 'one' sequence, check that it appears in the 'two' | |
490 | sequence, returning FALSE if not. */ | |
491 | ||
492 | for (;;) | |
493 | { | |
494 | host_item *hi; | |
495 | for (hi = two; hi != end_two->next; hi = hi->next) | |
496 | if (Ustrcmp(one->name, hi->name) == 0) break; | |
497 | if (hi == end_two->next) return FALSE; | |
498 | if (one == end_one) break; | |
499 | one = one->next; | |
500 | } | |
501 | ||
502 | /* All the hosts in the 'one' sequence were found in the 'two' sequence. | |
503 | Ensure both are pointing at the last host, and carry on as for equality. */ | |
504 | ||
505 | two = end_two; | |
506 | } | |
507 | ||
1c788856 JH |
508 | /* if the names matched but ports do not, mismatch */ |
509 | else if (one->port != two->port) | |
510 | return FALSE; | |
511 | ||
059ec3d9 PH |
512 | /* Hosts matched */ |
513 | ||
514 | one = one->next; | |
515 | two = two->next; | |
516 | } | |
517 | ||
518 | /* True if both are NULL */ | |
519 | ||
520 | return (one == two); | |
521 | } | |
522 | ||
523 | ||
524 | ||
525 | /************************************************* | |
526 | * Compare header lines * | |
527 | *************************************************/ | |
528 | ||
529 | /* This function is given two pointers to chains of header items, and it yields | |
530 | TRUE if they are the same header texts in the same order. | |
531 | ||
532 | Arguments: | |
533 | one points to the first header list | |
534 | two points to the second header list | |
535 | ||
536 | Returns: TRUE if the lists refer to the same header set | |
537 | */ | |
538 | ||
539 | static BOOL | |
540 | same_headers(header_line *one, header_line *two) | |
541 | { | |
d6c82d7b | 542 | for (;; one = one->next, two = two->next) |
059ec3d9 PH |
543 | { |
544 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 545 | if (!one || !two) return FALSE; |
059ec3d9 | 546 | if (Ustrcmp(one->text, two->text) != 0) return FALSE; |
059ec3d9 PH |
547 | } |
548 | } | |
549 | ||
550 | ||
551 | ||
552 | /************************************************* | |
553 | * Compare string settings * | |
554 | *************************************************/ | |
555 | ||
556 | /* This function is given two pointers to strings, and it returns | |
557 | TRUE if they are the same pointer, or if the two strings are the same. | |
558 | ||
559 | Arguments: | |
560 | one points to the first string | |
561 | two points to the second string | |
562 | ||
563 | Returns: TRUE or FALSE | |
564 | */ | |
565 | ||
566 | static BOOL | |
567 | same_strings(uschar *one, uschar *two) | |
568 | { | |
569 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 570 | if (!one || !two) return FALSE; |
059ec3d9 PH |
571 | return (Ustrcmp(one, two) == 0); |
572 | } | |
573 | ||
574 | ||
575 | ||
576 | /************************************************* | |
577 | * Compare uid/gid for addresses * | |
578 | *************************************************/ | |
579 | ||
580 | /* This function is given a transport and two addresses. It yields TRUE if the | |
581 | uid/gid/initgroups settings for the two addresses are going to be the same when | |
582 | they are delivered. | |
583 | ||
584 | Arguments: | |
585 | tp the transort | |
586 | addr1 the first address | |
587 | addr2 the second address | |
588 | ||
589 | Returns: TRUE or FALSE | |
590 | */ | |
591 | ||
592 | static BOOL | |
593 | same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2) | |
594 | { | |
d6c82d7b JH |
595 | if ( !tp->uid_set && !tp->expand_uid |
596 | && !tp->deliver_as_creator | |
597 | && ( testflag(addr1, af_uid_set) != testflag(addr2, af_gid_set) | |
598 | || ( testflag(addr1, af_uid_set) | |
599 | && ( addr1->uid != addr2->uid | |
600 | || testflag(addr1, af_initgroups) != testflag(addr2, af_initgroups) | |
601 | ) ) ) ) | |
602 | return FALSE; | |
059ec3d9 | 603 | |
d6c82d7b JH |
604 | if ( !tp->gid_set && !tp->expand_gid |
605 | && ( testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set) | |
606 | || ( testflag(addr1, af_gid_set) | |
607 | && addr1->gid != addr2->gid | |
608 | ) ) ) | |
609 | return FALSE; | |
059ec3d9 PH |
610 | |
611 | return TRUE; | |
612 | } | |
613 | ||
614 | ||
615 | ||
616 | ||
617 | /************************************************* | |
618 | * Record that an address is complete * | |
619 | *************************************************/ | |
620 | ||
621 | /* This function records that an address is complete. This is straightforward | |
622 | for most addresses, where the unique address is just the full address with the | |
623 | domain lower cased. For homonyms (addresses that are the same as one of their | |
624 | ancestors) their are complications. Their unique addresses have \x\ prepended | |
625 | (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and | |
626 | cousins. | |
627 | ||
628 | Exim used to record the unique addresses of homonyms as "complete". This, | |
629 | however, fails when the pattern of redirection varies over time (e.g. if taking | |
630 | unseen copies at only some times of day) because the prepended numbers may vary | |
631 | from one delivery run to the next. This problem is solved by never recording | |
632 | prepended unique addresses as complete. Instead, when a homonymic address has | |
633 | actually been delivered via a transport, we record its basic unique address | |
634 | followed by the name of the transport. This is checked in subsequent delivery | |
635 | runs whenever an address is routed to a transport. | |
636 | ||
637 | If the completed address is a top-level one (has no parent, which means it | |
638 | cannot be homonymic) we also add the original address to the non-recipients | |
639 | tree, so that it gets recorded in the spool file and therefore appears as | |
640 | "done" in any spool listings. The original address may differ from the unique | |
641 | address in the case of the domain. | |
642 | ||
643 | Finally, this function scans the list of duplicates, marks as done any that | |
644 | match this address, and calls child_done() for their ancestors. | |
645 | ||
646 | Arguments: | |
647 | addr address item that has been completed | |
648 | now current time as a string | |
649 | ||
650 | Returns: nothing | |
651 | */ | |
652 | ||
653 | static void | |
654 | address_done(address_item *addr, uschar *now) | |
655 | { | |
059ec3d9 PH |
656 | update_spool = TRUE; /* Ensure spool gets updated */ |
657 | ||
658 | /* Top-level address */ | |
659 | ||
d6c82d7b | 660 | if (!addr->parent) |
059ec3d9 PH |
661 | { |
662 | tree_add_nonrecipient(addr->unique); | |
663 | tree_add_nonrecipient(addr->address); | |
664 | } | |
665 | ||
666 | /* Homonymous child address */ | |
667 | ||
668 | else if (testflag(addr, af_homonym)) | |
669 | { | |
d6c82d7b | 670 | if (addr->transport) |
059ec3d9 PH |
671 | tree_add_nonrecipient( |
672 | string_sprintf("%s/%s", addr->unique + 3, addr->transport->name)); | |
059ec3d9 PH |
673 | } |
674 | ||
675 | /* Non-homonymous child address */ | |
676 | ||
677 | else tree_add_nonrecipient(addr->unique); | |
678 | ||
679 | /* Check the list of duplicate addresses and ensure they are now marked | |
680 | done as well. */ | |
681 | ||
d7978c0f | 682 | for (address_item * dup = addr_duplicate; dup; dup = dup->next) |
059ec3d9 PH |
683 | if (Ustrcmp(addr->unique, dup->unique) == 0) |
684 | { | |
57730b52 | 685 | tree_add_nonrecipient(dup->unique); |
059ec3d9 PH |
686 | child_done(dup, now); |
687 | } | |
059ec3d9 PH |
688 | } |
689 | ||
690 | ||
691 | ||
692 | ||
693 | /************************************************* | |
694 | * Decrease counts in parents and mark done * | |
695 | *************************************************/ | |
696 | ||
697 | /* This function is called when an address is complete. If there is a parent | |
698 | address, its count of children is decremented. If there are still other | |
699 | children outstanding, the function exits. Otherwise, if the count has become | |
700 | zero, address_done() is called to mark the parent and its duplicates complete. | |
701 | Then loop for any earlier ancestors. | |
702 | ||
703 | Arguments: | |
704 | addr points to the completed address item | |
705 | now the current time as a string, for writing to the message log | |
706 | ||
707 | Returns: nothing | |
708 | */ | |
709 | ||
710 | static void | |
711 | child_done(address_item *addr, uschar *now) | |
712 | { | |
d6c82d7b | 713 | while (addr->parent) |
059ec3d9 | 714 | { |
d7978c0f JH |
715 | address_item *aa; |
716 | ||
059ec3d9 | 717 | addr = addr->parent; |
82f90600 | 718 | if (--addr->child_count > 0) return; /* Incomplete parent */ |
059ec3d9 PH |
719 | address_done(addr, now); |
720 | ||
721 | /* Log the completion of all descendents only when there is no ancestor with | |
722 | the same original address. */ | |
723 | ||
d6c82d7b | 724 | for (aa = addr->parent; aa; aa = aa->parent) |
059ec3d9 | 725 | if (Ustrcmp(aa->address, addr->address) == 0) break; |
d6c82d7b | 726 | if (aa) continue; |
059ec3d9 PH |
727 | |
728 | deliver_msglog("%s %s: children all complete\n", now, addr->address); | |
729 | DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address); | |
730 | } | |
731 | } | |
732 | ||
733 | ||
734 | ||
ac881e27 TF |
735 | /************************************************* |
736 | * Delivery logging support functions * | |
737 | *************************************************/ | |
738 | ||
739 | /* The LOGGING() checks in d_log_interface() are complicated for backwards | |
740 | compatibility. When outgoing interface logging was originally added, it was | |
741 | conditional on just incoming_interface (which is off by default). The | |
742 | outgoing_interface option is on by default to preserve this behaviour, but | |
743 | you can enable incoming_interface and disable outgoing_interface to get I= | |
744 | fields on incoming lines only. | |
745 | ||
746 | Arguments: | |
acec9514 | 747 | g The log line |
ac881e27 TF |
748 | addr The address to be logged |
749 | ||
750 | Returns: New value for s | |
751 | */ | |
059ec3d9 | 752 | |
acec9514 JH |
753 | static gstring * |
754 | d_log_interface(gstring * g) | |
67d81c10 | 755 | { |
ac881e27 | 756 | if (LOGGING(incoming_interface) && LOGGING(outgoing_interface) |
d6c82d7b | 757 | && sending_ip_address) |
ac881e27 | 758 | { |
d12746bc JH |
759 | g = string_fmt_append(g, " I=[%s]", sending_ip_address); |
760 | if (LOGGING(outgoing_port)) | |
761 | g = string_fmt_append(g, "%d", sending_port); | |
ac881e27 | 762 | } |
acec9514 | 763 | return g; |
67d81c10 JH |
764 | } |
765 | ||
ac881e27 TF |
766 | |
767 | ||
acec9514 JH |
768 | static gstring * |
769 | d_hostlog(gstring * g, address_item * addr) | |
ac881e27 | 770 | { |
fc16abb4 JH |
771 | host_item * h = addr->host_used; |
772 | ||
acec9514 | 773 | g = string_append(g, 2, US" H=", h->name); |
fc16abb4 JH |
774 | |
775 | if (LOGGING(dnssec) && h->dnssec == DS_YES) | |
acec9514 | 776 | g = string_catn(g, US" DS", 3); |
fc16abb4 | 777 | |
acec9514 | 778 | g = string_append(g, 3, US" [", h->address, US"]"); |
fc16abb4 | 779 | |
ac881e27 | 780 | if (LOGGING(outgoing_port)) |
d12746bc | 781 | g = string_fmt_append(g, ":%d", h->port); |
e6d2a989 JH |
782 | |
783 | #ifdef SUPPORT_SOCKS | |
784 | if (LOGGING(proxy) && proxy_local_address) | |
785 | { | |
acec9514 | 786 | g = string_append(g, 3, US" PRX=[", proxy_local_address, US"]"); |
e6d2a989 | 787 | if (LOGGING(outgoing_port)) |
d12746bc | 788 | g = string_fmt_append(g, ":%d", proxy_local_port); |
e6d2a989 JH |
789 | } |
790 | #endif | |
791 | ||
acec9514 | 792 | g = d_log_interface(g); |
a2673768 JH |
793 | |
794 | if (testflag(addr, af_tcp_fastopen)) | |
ee8b8090 | 795 | g = string_catn(g, US" TFO*", testflag(addr, af_tcp_fastopen_data) ? 5 : 4); |
a2673768 | 796 | |
acec9514 | 797 | return g; |
ac881e27 TF |
798 | } |
799 | ||
800 | ||
801 | ||
e6d2a989 JH |
802 | |
803 | ||
67d81c10 | 804 | #ifdef SUPPORT_TLS |
acec9514 JH |
805 | static gstring * |
806 | d_tlslog(gstring * s, address_item * addr) | |
67d81c10 | 807 | { |
d6c82d7b | 808 | if (LOGGING(tls_cipher) && addr->cipher) |
acec9514 | 809 | s = string_append(s, 2, US" X=", addr->cipher); |
d6c82d7b | 810 | if (LOGGING(tls_certificate_verified) && addr->cipher) |
acec9514 | 811 | s = string_append(s, 2, US" CV=", |
ac881e27 TF |
812 | testflag(addr, af_cert_verified) |
813 | ? | |
c0635b6d | 814 | #ifdef SUPPORT_DANE |
ac881e27 TF |
815 | testflag(addr, af_dane_verified) |
816 | ? "dane" | |
817 | : | |
53a7196b | 818 | #endif |
ac881e27 TF |
819 | "yes" |
820 | : "no"); | |
d6c82d7b | 821 | if (LOGGING(tls_peerdn) && addr->peerdn) |
acec9514 | 822 | s = string_append(s, 3, US" DN=\"", string_printing(addr->peerdn), US"\""); |
ac881e27 | 823 | return s; |
67d81c10 JH |
824 | } |
825 | #endif | |
826 | ||
a7538db1 | 827 | |
14a465c3 JH |
828 | |
829 | ||
0cbf2b82 | 830 | #ifndef DISABLE_EVENT |
b30275b8 | 831 | uschar * |
55414b25 | 832 | event_raise(uschar * action, const uschar * event, uschar * ev_data) |
a7538db1 JH |
833 | { |
834 | uschar * s; | |
835 | if (action) | |
836 | { | |
837 | DEBUG(D_deliver) | |
774ef2d7 | 838 | debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n", |
a7538db1 JH |
839 | event, |
840 | action, deliver_host_address); | |
841 | ||
774ef2d7 JH |
842 | event_name = event; |
843 | event_data = ev_data; | |
a7538db1 JH |
844 | |
845 | if (!(s = expand_string(action)) && *expand_string_message) | |
846 | log_write(0, LOG_MAIN|LOG_PANIC, | |
774ef2d7 | 847 | "failed to expand event_action %s in %s: %s\n", |
7ea1237c | 848 | event, transport_name ? transport_name : US"main", expand_string_message); |
a7538db1 | 849 | |
774ef2d7 | 850 | event_name = event_data = NULL; |
a7538db1 JH |
851 | |
852 | /* If the expansion returns anything but an empty string, flag for | |
853 | the caller to modify his normal processing | |
854 | */ | |
855 | if (s && *s) | |
856 | { | |
857 | DEBUG(D_deliver) | |
774ef2d7 | 858 | debug_printf("Event(%s): event_action returned \"%s\"\n", event, s); |
95938464 | 859 | errno = ERRNO_EVENT; |
b30275b8 | 860 | return s; |
a7538db1 JH |
861 | } |
862 | } | |
b30275b8 | 863 | return NULL; |
a7538db1 | 864 | } |
14a465c3 | 865 | |
5ef5dd52 | 866 | void |
55414b25 | 867 | msg_event_raise(const uschar * event, const address_item * addr) |
14a465c3 | 868 | { |
55414b25 | 869 | const uschar * save_domain = deliver_domain; |
14a465c3 | 870 | uschar * save_local = deliver_localpart; |
55414b25 | 871 | const uschar * save_host = deliver_host; |
5ef5dd52 JB |
872 | const uschar * save_address = deliver_host_address; |
873 | const int save_port = deliver_host_port; | |
14a465c3 | 874 | |
14a465c3 | 875 | router_name = addr->router ? addr->router->name : NULL; |
14a465c3 JH |
876 | deliver_domain = addr->domain; |
877 | deliver_localpart = addr->local_part; | |
c562fd30 | 878 | deliver_host = addr->host_used ? addr->host_used->name : NULL; |
14a465c3 | 879 | |
4e928780 MK |
880 | if (!addr->transport) |
881 | { | |
882 | if (Ustrcmp(event, "msg:fail:delivery") == 0) | |
883 | { | |
884 | /* An address failed with no transport involved. This happens when | |
885 | a filter was used which triggered a fail command (in such a case | |
886 | a transport isn't needed). Convert it to an internal fail event. */ | |
887 | ||
888 | (void) event_raise(event_action, US"msg:fail:internal", addr->message); | |
889 | } | |
890 | } | |
891 | else | |
892 | { | |
893 | transport_name = addr->transport->name; | |
894 | ||
895 | (void) event_raise(addr->transport->event_action, event, | |
896 | addr->host_used | |
897 | || Ustrcmp(addr->transport->driver_name, "smtp") == 0 | |
898 | || Ustrcmp(addr->transport->driver_name, "lmtp") == 0 | |
899 | || Ustrcmp(addr->transport->driver_name, "autoreply") == 0 | |
900 | ? addr->message : NULL); | |
901 | } | |
14a465c3 | 902 | |
5ef5dd52 JB |
903 | deliver_host_port = save_port; |
904 | deliver_host_address = save_address; | |
c562fd30 | 905 | deliver_host = save_host; |
14a465c3 JH |
906 | deliver_localpart = save_local; |
907 | deliver_domain = save_domain; | |
908 | router_name = transport_name = NULL; | |
909 | } | |
0cbf2b82 | 910 | #endif /*DISABLE_EVENT*/ |
14a465c3 JH |
911 | |
912 | ||
a7538db1 | 913 | |
5dac72a7 JH |
914 | /******************************************************************************/ |
915 | ||
916 | ||
917 | /************************************************* | |
918 | * Generate local prt for logging * | |
919 | *************************************************/ | |
920 | ||
921 | /* This function is a subroutine for use in string_log_address() below. | |
922 | ||
923 | Arguments: | |
924 | addr the address being logged | |
925 | yield the current dynamic buffer pointer | |
5dac72a7 JH |
926 | |
927 | Returns: the new value of the buffer pointer | |
928 | */ | |
929 | ||
acec9514 JH |
930 | static gstring * |
931 | string_get_localpart(address_item * addr, gstring * yield) | |
5dac72a7 JH |
932 | { |
933 | uschar * s; | |
934 | ||
935 | s = addr->prefix; | |
936 | if (testflag(addr, af_include_affixes) && s) | |
937 | { | |
938 | #ifdef SUPPORT_I18N | |
939 | if (testflag(addr, af_utf8_downcvt)) | |
940 | s = string_localpart_utf8_to_alabel(s, NULL); | |
941 | #endif | |
acec9514 | 942 | yield = string_cat(yield, s); |
5dac72a7 JH |
943 | } |
944 | ||
945 | s = addr->local_part; | |
946 | #ifdef SUPPORT_I18N | |
947 | if (testflag(addr, af_utf8_downcvt)) | |
948 | s = string_localpart_utf8_to_alabel(s, NULL); | |
949 | #endif | |
acec9514 | 950 | yield = string_cat(yield, s); |
5dac72a7 JH |
951 | |
952 | s = addr->suffix; | |
953 | if (testflag(addr, af_include_affixes) && s) | |
954 | { | |
955 | #ifdef SUPPORT_I18N | |
956 | if (testflag(addr, af_utf8_downcvt)) | |
957 | s = string_localpart_utf8_to_alabel(s, NULL); | |
958 | #endif | |
acec9514 | 959 | yield = string_cat(yield, s); |
5dac72a7 JH |
960 | } |
961 | ||
962 | return yield; | |
963 | } | |
964 | ||
965 | ||
966 | /************************************************* | |
967 | * Generate log address list * | |
968 | *************************************************/ | |
969 | ||
970 | /* This function generates a list consisting of an address and its parents, for | |
971 | use in logging lines. For saved onetime aliased addresses, the onetime parent | |
972 | field is used. If the address was delivered by a transport with rcpt_include_ | |
973 | affixes set, the af_include_affixes bit will be set in the address. In that | |
974 | case, we include the affixes here too. | |
975 | ||
976 | Arguments: | |
acec9514 | 977 | g points to growing-string struct |
5dac72a7 JH |
978 | addr bottom (ultimate) address |
979 | all_parents if TRUE, include all parents | |
980 | success TRUE for successful delivery | |
981 | ||
982 | Returns: a growable string in dynamic store | |
983 | */ | |
984 | ||
acec9514 JH |
985 | static gstring * |
986 | string_log_address(gstring * g, | |
5dac72a7 JH |
987 | address_item *addr, BOOL all_parents, BOOL success) |
988 | { | |
989 | BOOL add_topaddr = TRUE; | |
990 | address_item *topaddr; | |
991 | ||
992 | /* Find the ultimate parent */ | |
993 | ||
994 | for (topaddr = addr; topaddr->parent; topaddr = topaddr->parent) ; | |
995 | ||
996 | /* We start with just the local part for pipe, file, and reply deliveries, and | |
997 | for successful local deliveries from routers that have the log_as_local flag | |
998 | set. File deliveries from filters can be specified as non-absolute paths in | |
4c04137d | 999 | cases where the transport is going to complete the path. If there is an error |
5dac72a7 JH |
1000 | before this happens (expansion failure) the local part will not be updated, and |
1001 | so won't necessarily look like a path. Add extra text for this case. */ | |
1002 | ||
1003 | if ( testflag(addr, af_pfr) | |
1004 | || ( success | |
1005 | && addr->router && addr->router->log_as_local | |
1006 | && addr->transport && addr->transport->info->local | |
1007 | ) ) | |
1008 | { | |
1009 | if (testflag(addr, af_file) && addr->local_part[0] != '/') | |
acec9514 JH |
1010 | g = string_catn(g, CUS"save ", 5); |
1011 | g = string_get_localpart(addr, g); | |
5dac72a7 JH |
1012 | } |
1013 | ||
1014 | /* Other deliveries start with the full address. It we have split it into local | |
1015 | part and domain, use those fields. Some early failures can happen before the | |
1016 | splitting is done; in those cases use the original field. */ | |
1017 | ||
1018 | else | |
1019 | { | |
acec9514 | 1020 | uschar * cmp = g->s + g->ptr; |
5dac72a7 JH |
1021 | |
1022 | if (addr->local_part) | |
1023 | { | |
1024 | const uschar * s; | |
acec9514 JH |
1025 | g = string_get_localpart(addr, g); |
1026 | g = string_catn(g, US"@", 1); | |
5dac72a7 JH |
1027 | s = addr->domain; |
1028 | #ifdef SUPPORT_I18N | |
1029 | if (testflag(addr, af_utf8_downcvt)) | |
1030 | s = string_localpart_utf8_to_alabel(s, NULL); | |
1031 | #endif | |
acec9514 | 1032 | g = string_cat(g, s); |
5dac72a7 JH |
1033 | } |
1034 | else | |
acec9514 | 1035 | g = string_cat(g, addr->address); |
5dac72a7 JH |
1036 | |
1037 | /* If the address we are going to print is the same as the top address, | |
1038 | and all parents are not being included, don't add on the top address. First | |
1039 | of all, do a caseless comparison; if this succeeds, do a caseful comparison | |
1040 | on the local parts. */ | |
1041 | ||
306c6c77 | 1042 | string_from_gstring(g); /* ensure nul-terminated */ |
5dac72a7 JH |
1043 | if ( strcmpic(cmp, topaddr->address) == 0 |
1044 | && Ustrncmp(cmp, topaddr->address, Ustrchr(cmp, '@') - cmp) == 0 | |
1045 | && !addr->onetime_parent | |
1046 | && (!all_parents || !addr->parent || addr->parent == topaddr) | |
1047 | ) | |
1048 | add_topaddr = FALSE; | |
1049 | } | |
1050 | ||
1051 | /* If all parents are requested, or this is a local pipe/file/reply, and | |
1052 | there is at least one intermediate parent, show it in brackets, and continue | |
1053 | with all of them if all are wanted. */ | |
1054 | ||
1055 | if ( (all_parents || testflag(addr, af_pfr)) | |
1056 | && addr->parent | |
1057 | && addr->parent != topaddr) | |
1058 | { | |
1059 | uschar *s = US" ("; | |
d7978c0f | 1060 | for (address_item * addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent) |
5dac72a7 | 1061 | { |
acec9514 JH |
1062 | g = string_catn(g, s, 2); |
1063 | g = string_cat (g, addr2->address); | |
5dac72a7 JH |
1064 | if (!all_parents) break; |
1065 | s = US", "; | |
1066 | } | |
acec9514 | 1067 | g = string_catn(g, US")", 1); |
5dac72a7 JH |
1068 | } |
1069 | ||
1070 | /* Add the top address if it is required */ | |
1071 | ||
1072 | if (add_topaddr) | |
acec9514 | 1073 | g = string_append(g, 3, |
5dac72a7 JH |
1074 | US" <", |
1075 | addr->onetime_parent ? addr->onetime_parent : topaddr->address, | |
1076 | US">"); | |
1077 | ||
acec9514 | 1078 | return g; |
5dac72a7 JH |
1079 | } |
1080 | ||
1081 | ||
32dfdf8b JH |
1082 | |
1083 | void | |
1084 | timesince(struct timeval * diff, struct timeval * then) | |
1085 | { | |
1086 | gettimeofday(diff, NULL); | |
1087 | diff->tv_sec -= then->tv_sec; | |
1088 | if ((diff->tv_usec -= then->tv_usec) < 0) | |
1089 | { | |
1090 | diff->tv_sec--; | |
1091 | diff->tv_usec += 1000*1000; | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | ||
1096 | ||
306c6c77 | 1097 | uschar * |
32dfdf8b JH |
1098 | string_timediff(struct timeval * diff) |
1099 | { | |
1100 | static uschar buf[sizeof("0.000s")]; | |
1101 | ||
1102 | if (diff->tv_sec >= 5 || !LOGGING(millisec)) | |
1103 | return readconf_printtime((int)diff->tv_sec); | |
1104 | ||
13c7874e | 1105 | sprintf(CS buf, "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000); |
32dfdf8b JH |
1106 | return buf; |
1107 | } | |
1108 | ||
1109 | ||
0f1a8658 | 1110 | uschar * |
32dfdf8b JH |
1111 | string_timesince(struct timeval * then) |
1112 | { | |
1113 | struct timeval diff; | |
1114 | ||
1115 | timesince(&diff, then); | |
1116 | return string_timediff(&diff); | |
1117 | } | |
1118 | ||
5dac72a7 JH |
1119 | /******************************************************************************/ |
1120 | ||
1121 | ||
1122 | ||
817d9f57 | 1123 | /* If msg is NULL this is a delivery log and logchar is used. Otherwise |
67d81c10 | 1124 | this is a nonstandard call; no two-character delivery flag is written |
817d9f57 JH |
1125 | but sender-host and sender are prefixed and "msg" is inserted in the log line. |
1126 | ||
1127 | Arguments: | |
1128 | flags passed to log_write() | |
1129 | */ | |
e4bdf652 | 1130 | void |
817d9f57 | 1131 | delivery_log(int flags, address_item * addr, int logchar, uschar * msg) |
e4bdf652 | 1132 | { |
acec9514 | 1133 | gstring * g; /* Used for a temporary, expanding buffer, for building log lines */ |
5dac72a7 | 1134 | void * reset_point; /* released afterwards. */ |
e4bdf652 | 1135 | |
e4bdf652 JH |
1136 | /* Log the delivery on the main log. We use an extensible string to build up |
1137 | the log line, and reset the store afterwards. Remote deliveries should always | |
1138 | have a pointer to the host item that succeeded; local deliveries can have a | |
1139 | pointer to a single host item in their host list, for use by the transport. */ | |
1140 | ||
0cbf2b82 | 1141 | #ifndef DISABLE_EVENT |
a7538db1 | 1142 | /* presume no successful remote delivery */ |
783b385f | 1143 | lookup_dnssec_authenticated = NULL; |
d68218c7 JH |
1144 | #endif |
1145 | ||
acec9514 | 1146 | g = reset_point = string_get(256); |
e4bdf652 | 1147 | |
817d9f57 | 1148 | if (msg) |
acec9514 | 1149 | g = string_append(g, 2, host_and_ident(TRUE), US" "); |
817d9f57 JH |
1150 | else |
1151 | { | |
acec9514 JH |
1152 | g->s[0] = logchar; g->ptr = 1; |
1153 | g = string_catn(g, US"> ", 2); | |
817d9f57 | 1154 | } |
acec9514 | 1155 | g = string_log_address(g, addr, LOGGING(all_parents), TRUE); |
e4bdf652 | 1156 | |
6c6d6e48 | 1157 | if (LOGGING(sender_on_delivery) || msg) |
acec9514 | 1158 | g = string_append(g, 3, US" F=<", |
8c5d388a | 1159 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
1160 | testflag(addr, af_utf8_downcvt) |
1161 | ? string_address_utf8_to_alabel(sender_address, NULL) | |
1162 | : | |
1163 | #endif | |
1164 | sender_address, | |
1165 | US">"); | |
e4bdf652 | 1166 | |
afa6d3ad | 1167 | if (*queue_name) |
acec9514 | 1168 | g = string_append(g, 2, US" Q=", queue_name); |
afa6d3ad | 1169 | |
e4bdf652 | 1170 | #ifdef EXPERIMENTAL_SRS |
d43cbe25 | 1171 | if(addr->prop.srs_sender) |
acec9514 | 1172 | g = string_append(g, 3, US" SRS=<", addr->prop.srs_sender, US">"); |
e4bdf652 JH |
1173 | #endif |
1174 | ||
1175 | /* You might think that the return path must always be set for a successful | |
1176 | delivery; indeed, I did for some time, until this statement crashed. The case | |
1177 | when it is not set is for a delivery to /dev/null which is optimised by not | |
1178 | being run at all. */ | |
1179 | ||
d6c82d7b | 1180 | if (used_return_path && LOGGING(return_path_on_delivery)) |
acec9514 | 1181 | g = string_append(g, 3, US" P=<", used_return_path, US">"); |
e4bdf652 | 1182 | |
817d9f57 | 1183 | if (msg) |
acec9514 | 1184 | g = string_append(g, 2, US" ", msg); |
e4bdf652 | 1185 | |
817d9f57 | 1186 | /* For a delivery from a system filter, there may not be a router */ |
d6c82d7b | 1187 | if (addr->router) |
acec9514 | 1188 | g = string_append(g, 2, US" R=", addr->router->name); |
e4bdf652 | 1189 | |
acec9514 | 1190 | g = string_append(g, 2, US" T=", addr->transport->name); |
e4bdf652 | 1191 | |
6c6d6e48 | 1192 | if (LOGGING(delivery_size)) |
d12746bc | 1193 | g = string_fmt_append(g, " S=%d", transport_count); |
e4bdf652 JH |
1194 | |
1195 | /* Local delivery */ | |
1196 | ||
1197 | if (addr->transport->info->local) | |
1198 | { | |
a7538db1 | 1199 | if (addr->host_list) |
acec9514 JH |
1200 | g = string_append(g, 2, US" H=", addr->host_list->name); |
1201 | g = d_log_interface(g); | |
d6c82d7b | 1202 | if (addr->shadow_message) |
acec9514 | 1203 | g = string_cat(g, addr->shadow_message); |
e4bdf652 JH |
1204 | } |
1205 | ||
1206 | /* Remote delivery */ | |
1207 | ||
1208 | else | |
1209 | { | |
783b385f | 1210 | if (addr->host_used) |
e4bdf652 | 1211 | { |
acec9514 | 1212 | g = d_hostlog(g, addr); |
e4bdf652 | 1213 | if (continue_sequence > 1) |
acec9514 | 1214 | g = string_catn(g, US"*", 1); |
d68218c7 | 1215 | |
0cbf2b82 | 1216 | #ifndef DISABLE_EVENT |
a7538db1 JH |
1217 | deliver_host_address = addr->host_used->address; |
1218 | deliver_host_port = addr->host_used->port; | |
029f4192 | 1219 | deliver_host = addr->host_used->name; |
783b385f JH |
1220 | |
1221 | /* DNS lookup status */ | |
1222 | lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes" | |
1223 | : addr->host_used->dnssec==DS_NO ? US"no" | |
1224 | : NULL; | |
a7538db1 | 1225 | #endif |
e4bdf652 JH |
1226 | } |
1227 | ||
a7538db1 | 1228 | #ifdef SUPPORT_TLS |
acec9514 | 1229 | g = d_tlslog(g, addr); |
a7538db1 | 1230 | #endif |
e4bdf652 | 1231 | |
018c60d7 | 1232 | if (addr->authenticator) |
6f123593 | 1233 | { |
acec9514 | 1234 | g = string_append(g, 2, US" A=", addr->authenticator); |
018c60d7 | 1235 | if (addr->auth_id) |
c8e2fc1e | 1236 | { |
acec9514 | 1237 | g = string_append(g, 2, US":", addr->auth_id); |
6c6d6e48 | 1238 | if (LOGGING(smtp_mailauth) && addr->auth_sndr) |
acec9514 | 1239 | g = string_append(g, 2, US":", addr->auth_sndr); |
c8e2fc1e | 1240 | } |
6f123593 JH |
1241 | } |
1242 | ||
ee8b8090 JH |
1243 | if (LOGGING(pipelining)) |
1244 | { | |
1245 | if (testflag(addr, af_pipelining)) | |
1246 | g = string_catn(g, US" L", 2); | |
1247 | #ifdef EXPERIMENTAL_PIPE_CONNECT | |
1248 | if (testflag(addr, af_early_pipe)) | |
1249 | g = string_catn(g, US"*", 1); | |
1250 | #endif | |
1251 | } | |
7c576fca | 1252 | |
a7538db1 | 1253 | #ifndef DISABLE_PRDR |
7eb0e5d2 | 1254 | if (testflag(addr, af_prdr_used)) |
acec9514 | 1255 | g = string_catn(g, US" PRDR", 5); |
a7538db1 | 1256 | #endif |
e0cc6cda | 1257 | |
7eb0e5d2 | 1258 | if (testflag(addr, af_chunking_used)) |
acec9514 | 1259 | g = string_catn(g, US" K", 2); |
76f44207 WB |
1260 | } |
1261 | ||
1262 | /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */ | |
fd98a5c6 | 1263 | |
d6c82d7b JH |
1264 | if ( LOGGING(smtp_confirmation) |
1265 | && addr->message | |
1266 | && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0) | |
1267 | ) | |
76f44207 | 1268 | { |
1c5b1499 | 1269 | unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024; |
76f44207 WB |
1270 | uschar *p = big_buffer; |
1271 | uschar *ss = addr->message; | |
1272 | *p++ = '\"'; | |
d7978c0f | 1273 | for (int i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */ |
e4bdf652 | 1274 | { |
27520a68 | 1275 | if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */ |
76f44207 | 1276 | *p++ = ss[i]; |
e4bdf652 | 1277 | } |
76f44207 WB |
1278 | *p++ = '\"'; |
1279 | *p = 0; | |
acec9514 | 1280 | g = string_append(g, 2, US" C=", big_buffer); |
e4bdf652 JH |
1281 | } |
1282 | ||
1283 | /* Time on queue and actual time taken to deliver */ | |
1284 | ||
6c6d6e48 | 1285 | if (LOGGING(queue_time)) |
acec9514 | 1286 | g = string_append(g, 2, US" QT=", |
32dfdf8b | 1287 | string_timesince(&received_time)); |
e4bdf652 | 1288 | |
6c6d6e48 | 1289 | if (LOGGING(deliver_time)) |
32dfdf8b | 1290 | { |
f2ed27cf | 1291 | struct timeval diff = {.tv_sec = addr->more_errno, .tv_usec = addr->delivery_usec}; |
acec9514 | 1292 | g = string_append(g, 2, US" DT=", string_timediff(&diff)); |
32dfdf8b | 1293 | } |
e4bdf652 JH |
1294 | |
1295 | /* string_cat() always leaves room for the terminator. Release the | |
1296 | store we used to build the line after writing it. */ | |
1297 | ||
acec9514 | 1298 | log_write(0, flags, "%s", string_from_gstring(g)); |
d68218c7 | 1299 | |
0cbf2b82 | 1300 | #ifndef DISABLE_EVENT |
774ef2d7 | 1301 | if (!msg) msg_event_raise(US"msg:delivery", addr); |
d68218c7 | 1302 | #endif |
14a465c3 | 1303 | |
e4bdf652 JH |
1304 | store_reset(reset_point); |
1305 | return; | |
1306 | } | |
1307 | ||
1308 | ||
1309 | ||
5dac72a7 JH |
1310 | static void |
1311 | deferral_log(address_item * addr, uschar * now, | |
1312 | int logflags, uschar * driver_name, uschar * driver_kind) | |
1313 | { | |
acec9514 JH |
1314 | gstring * g; |
1315 | void * reset_point; | |
5dac72a7 JH |
1316 | |
1317 | /* Build up the line that is used for both the message log and the main | |
1318 | log. */ | |
1319 | ||
acec9514 | 1320 | g = reset_point = string_get(256); |
5dac72a7 JH |
1321 | |
1322 | /* Create the address string for logging. Must not do this earlier, because | |
1323 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1324 | ||
acec9514 | 1325 | g = string_log_address(g, addr, LOGGING(all_parents), FALSE); |
5dac72a7 JH |
1326 | |
1327 | if (*queue_name) | |
acec9514 | 1328 | g = string_append(g, 2, US" Q=", queue_name); |
5dac72a7 JH |
1329 | |
1330 | /* Either driver_name contains something and driver_kind contains | |
1331 | " router" or " transport" (note the leading space), or driver_name is | |
1332 | a null string and driver_kind contains "routing" without the leading | |
1333 | space, if all routing has been deferred. When a domain has been held, | |
1334 | so nothing has been done at all, both variables contain null strings. */ | |
1335 | ||
1336 | if (driver_name) | |
1337 | { | |
1338 | if (driver_kind[1] == 't' && addr->router) | |
acec9514 | 1339 | g = string_append(g, 2, US" R=", addr->router->name); |
d12746bc | 1340 | g = string_fmt_append(g, " %c=%s", toupper(driver_kind[1]), driver_name); |
5dac72a7 JH |
1341 | } |
1342 | else if (driver_kind) | |
acec9514 | 1343 | g = string_append(g, 2, US" ", driver_kind); |
5dac72a7 | 1344 | |
d12746bc | 1345 | g = string_fmt_append(g, " defer (%d)", addr->basic_errno); |
5dac72a7 JH |
1346 | |
1347 | if (addr->basic_errno > 0) | |
acec9514 | 1348 | g = string_append(g, 2, US": ", |
5dac72a7 JH |
1349 | US strerror(addr->basic_errno)); |
1350 | ||
1351 | if (addr->host_used) | |
1352 | { | |
acec9514 | 1353 | g = string_append(g, 5, |
5dac72a7 JH |
1354 | US" H=", addr->host_used->name, |
1355 | US" [", addr->host_used->address, US"]"); | |
1356 | if (LOGGING(outgoing_port)) | |
1357 | { | |
1358 | int port = addr->host_used->port; | |
d12746bc | 1359 | g = string_fmt_append(g, ":%d", port == PORT_NONE ? 25 : port); |
5dac72a7 JH |
1360 | } |
1361 | } | |
1362 | ||
1363 | if (addr->message) | |
acec9514 | 1364 | g = string_append(g, 2, US": ", addr->message); |
5dac72a7 | 1365 | |
acec9514 | 1366 | (void) string_from_gstring(g); |
5dac72a7 JH |
1367 | |
1368 | /* Log the deferment in the message log, but don't clutter it | |
1369 | up with retry-time defers after the first delivery attempt. */ | |
1370 | ||
8768d548 | 1371 | if (f.deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE) |
acec9514 | 1372 | deliver_msglog("%s %s\n", now, g->s); |
5dac72a7 JH |
1373 | |
1374 | /* Write the main log and reset the store. | |
1375 | For errors of the type "retry time not reached" (also remotes skipped | |
1376 | on queue run), logging is controlled by L_retry_defer. Note that this kind | |
1377 | of error number is negative, and all the retry ones are less than any | |
1378 | others. */ | |
1379 | ||
1380 | ||
1381 | log_write(addr->basic_errno <= ERRNO_RETRY_BASE ? L_retry_defer : 0, logflags, | |
acec9514 | 1382 | "== %s", g->s); |
5dac72a7 JH |
1383 | |
1384 | store_reset(reset_point); | |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | ||
1389 | ||
1390 | static void | |
1391 | failure_log(address_item * addr, uschar * driver_kind, uschar * now) | |
1392 | { | |
acec9514 JH |
1393 | void * reset_point; |
1394 | gstring * g = reset_point = string_get(256); | |
5dac72a7 | 1395 | |
ffbc20ed MK |
1396 | #ifndef DISABLE_EVENT |
1397 | /* Message failures for which we will send a DSN get their event raised | |
1398 | later so avoid doing it here. */ | |
1399 | ||
1400 | if ( !addr->prop.ignore_error | |
1401 | && !(addr->dsn_flags & (rf_dsnflags & ~rf_notify_failure)) | |
1402 | ) | |
1403 | msg_event_raise(US"msg:fail:delivery", addr); | |
1404 | #endif | |
1405 | ||
5dac72a7 JH |
1406 | /* Build up the log line for the message and main logs */ |
1407 | ||
5dac72a7 JH |
1408 | /* Create the address string for logging. Must not do this earlier, because |
1409 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1410 | ||
acec9514 | 1411 | g = string_log_address(g, addr, LOGGING(all_parents), FALSE); |
5dac72a7 JH |
1412 | |
1413 | if (LOGGING(sender_on_delivery)) | |
acec9514 | 1414 | g = string_append(g, 3, US" F=<", sender_address, US">"); |
5dac72a7 JH |
1415 | |
1416 | if (*queue_name) | |
acec9514 | 1417 | g = string_append(g, 2, US" Q=", queue_name); |
5dac72a7 JH |
1418 | |
1419 | /* Return path may not be set if no delivery actually happened */ | |
1420 | ||
1421 | if (used_return_path && LOGGING(return_path_on_delivery)) | |
acec9514 | 1422 | g = string_append(g, 3, US" P=<", used_return_path, US">"); |
5dac72a7 JH |
1423 | |
1424 | if (addr->router) | |
acec9514 | 1425 | g = string_append(g, 2, US" R=", addr->router->name); |
5dac72a7 | 1426 | if (addr->transport) |
acec9514 | 1427 | g = string_append(g, 2, US" T=", addr->transport->name); |
5dac72a7 JH |
1428 | |
1429 | if (addr->host_used) | |
acec9514 | 1430 | g = d_hostlog(g, addr); |
5dac72a7 JH |
1431 | |
1432 | #ifdef SUPPORT_TLS | |
acec9514 | 1433 | g = d_tlslog(g, addr); |
5dac72a7 JH |
1434 | #endif |
1435 | ||
1436 | if (addr->basic_errno > 0) | |
acec9514 | 1437 | g = string_append(g, 2, US": ", US strerror(addr->basic_errno)); |
5dac72a7 JH |
1438 | |
1439 | if (addr->message) | |
acec9514 | 1440 | g = string_append(g, 2, US": ", addr->message); |
5dac72a7 | 1441 | |
acec9514 | 1442 | (void) string_from_gstring(g); |
5dac72a7 JH |
1443 | |
1444 | /* Do the logging. For the message log, "routing failed" for those cases, | |
1445 | just to make it clearer. */ | |
1446 | ||
1447 | if (driver_kind) | |
acec9514 | 1448 | deliver_msglog("%s %s failed for %s\n", now, driver_kind, g->s); |
5dac72a7 | 1449 | else |
acec9514 | 1450 | deliver_msglog("%s %s\n", now, g->s); |
5dac72a7 | 1451 | |
acec9514 | 1452 | log_write(0, LOG_MAIN, "** %s", g->s); |
5dac72a7 | 1453 | |
5dac72a7 JH |
1454 | store_reset(reset_point); |
1455 | return; | |
1456 | } | |
1457 | ||
1458 | ||
1459 | ||
059ec3d9 PH |
1460 | /************************************************* |
1461 | * Actions at the end of handling an address * | |
1462 | *************************************************/ | |
1463 | ||
1464 | /* This is a function for processing a single address when all that can be done | |
1465 | with it has been done. | |
1466 | ||
1467 | Arguments: | |
1468 | addr points to the address block | |
1469 | result the result of the delivery attempt | |
1470 | logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC) | |
1471 | driver_type indicates which type of driver (transport, or router) was last | |
1472 | to process the address | |
1473 | logchar '=' or '-' for use when logging deliveries with => or -> | |
1474 | ||
1475 | Returns: nothing | |
1476 | */ | |
1477 | ||
1478 | static void | |
1479 | post_process_one(address_item *addr, int result, int logflags, int driver_type, | |
1480 | int logchar) | |
1481 | { | |
1482 | uschar *now = tod_stamp(tod_log); | |
1483 | uschar *driver_kind = NULL; | |
1484 | uschar *driver_name = NULL; | |
059ec3d9 | 1485 | |
059ec3d9 PH |
1486 | DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result); |
1487 | ||
1488 | /* Set up driver kind and name for logging. Disable logging if the router or | |
1489 | transport has disabled it. */ | |
1490 | ||
ba936fb8 | 1491 | if (driver_type == EXIM_DTYPE_TRANSPORT) |
059ec3d9 | 1492 | { |
d6c82d7b | 1493 | if (addr->transport) |
059ec3d9 PH |
1494 | { |
1495 | driver_name = addr->transport->name; | |
1496 | driver_kind = US" transport"; | |
8768d548 | 1497 | f.disable_logging = addr->transport->disable_logging; |
059ec3d9 PH |
1498 | } |
1499 | else driver_kind = US"transporting"; | |
1500 | } | |
ba936fb8 | 1501 | else if (driver_type == EXIM_DTYPE_ROUTER) |
059ec3d9 | 1502 | { |
d6c82d7b | 1503 | if (addr->router) |
059ec3d9 PH |
1504 | { |
1505 | driver_name = addr->router->name; | |
1506 | driver_kind = US" router"; | |
8768d548 | 1507 | f.disable_logging = addr->router->disable_logging; |
059ec3d9 PH |
1508 | } |
1509 | else driver_kind = US"routing"; | |
1510 | } | |
1511 | ||
1512 | /* If there's an error message set, ensure that it contains only printing | |
1513 | characters - it should, but occasionally things slip in and this at least | |
49c2d5ea PH |
1514 | stops the log format from getting wrecked. We also scan the message for an LDAP |
1515 | expansion item that has a password setting, and flatten the password. This is a | |
1516 | fudge, but I don't know a cleaner way of doing this. (If the item is badly | |
1517 | malformed, it won't ever have gone near LDAP.) */ | |
059ec3d9 | 1518 | |
d6c82d7b | 1519 | if (addr->message) |
49c2d5ea | 1520 | { |
55414b25 | 1521 | const uschar * s = string_printing(addr->message); |
f42deca9 JH |
1522 | |
1523 | /* deconst cast ok as string_printing known to have alloc'n'copied */ | |
1524 | addr->message = expand_hide_passwords(US s); | |
49c2d5ea | 1525 | } |
059ec3d9 PH |
1526 | |
1527 | /* If we used a transport that has one of the "return_output" options set, and | |
1528 | if it did in fact generate some output, then for return_output we treat the | |
1529 | message as failed if it was not already set that way, so that the output gets | |
1530 | returned to the sender, provided there is a sender to send it to. For | |
1531 | return_fail_output, do this only if the delivery failed. Otherwise we just | |
1532 | unlink the file, and remove the name so that if the delivery failed, we don't | |
1533 | try to send back an empty or unwanted file. The log_output options operate only | |
1534 | on a non-empty file. | |
1535 | ||
1536 | In any case, we close the message file, because we cannot afford to leave a | |
1537 | file-descriptor for one address while processing (maybe very many) others. */ | |
1538 | ||
d6c82d7b | 1539 | if (addr->return_file >= 0 && addr->return_filename) |
059ec3d9 PH |
1540 | { |
1541 | BOOL return_output = FALSE; | |
1542 | struct stat statbuf; | |
54fc8428 | 1543 | (void)EXIMfsync(addr->return_file); |
059ec3d9 PH |
1544 | |
1545 | /* If there is no output, do nothing. */ | |
1546 | ||
1547 | if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0) | |
1548 | { | |
1549 | transport_instance *tb = addr->transport; | |
1550 | ||
1551 | /* Handle logging options */ | |
1552 | ||
d6c82d7b JH |
1553 | if ( tb->log_output |
1554 | || result == FAIL && tb->log_fail_output | |
1555 | || result == DEFER && tb->log_defer_output | |
1556 | ) | |
059ec3d9 PH |
1557 | { |
1558 | uschar *s; | |
1559 | FILE *f = Ufopen(addr->return_filename, "rb"); | |
d6c82d7b | 1560 | if (!f) |
059ec3d9 PH |
1561 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output " |
1562 | "from %s transport: %s", addr->return_filename, tb->name, | |
1563 | strerror(errno)); | |
1564 | else | |
d6c82d7b | 1565 | if ((s = US Ufgets(big_buffer, big_buffer_size, f))) |
059ec3d9 PH |
1566 | { |
1567 | uschar *p = big_buffer + Ustrlen(big_buffer); | |
55414b25 | 1568 | const uschar * sp; |
059ec3d9 PH |
1569 | while (p > big_buffer && isspace(p[-1])) p--; |
1570 | *p = 0; | |
55414b25 | 1571 | sp = string_printing(big_buffer); |
059ec3d9 | 1572 | log_write(0, LOG_MAIN, "<%s>: %s transport output: %s", |
55414b25 | 1573 | addr->address, tb->name, sp); |
059ec3d9 | 1574 | } |
0e8aed8a | 1575 | (void)fclose(f); |
059ec3d9 PH |
1576 | } |
1577 | ||
1578 | /* Handle returning options, but only if there is an address to return | |
1579 | the text to. */ | |
1580 | ||
d6c82d7b | 1581 | if (sender_address[0] != 0 || addr->prop.errors_address) |
059ec3d9 PH |
1582 | if (tb->return_output) |
1583 | { | |
1584 | addr->transport_return = result = FAIL; | |
d6c82d7b | 1585 | if (addr->basic_errno == 0 && !addr->message) |
059ec3d9 PH |
1586 | addr->message = US"return message generated"; |
1587 | return_output = TRUE; | |
1588 | } | |
1589 | else | |
1590 | if (tb->return_fail_output && result == FAIL) return_output = TRUE; | |
059ec3d9 PH |
1591 | } |
1592 | ||
1593 | /* Get rid of the file unless it might be returned, but close it in | |
1594 | all cases. */ | |
1595 | ||
1596 | if (!return_output) | |
1597 | { | |
1598 | Uunlink(addr->return_filename); | |
1599 | addr->return_filename = NULL; | |
1600 | addr->return_file = -1; | |
1601 | } | |
1602 | ||
f1e894f3 | 1603 | (void)close(addr->return_file); |
059ec3d9 PH |
1604 | } |
1605 | ||
9d1c15ef | 1606 | /* The success case happens only after delivery by a transport. */ |
059ec3d9 PH |
1607 | |
1608 | if (result == OK) | |
1609 | { | |
1610 | addr->next = addr_succeed; | |
1611 | addr_succeed = addr; | |
1612 | ||
1613 | /* Call address_done() to ensure that we don't deliver to this address again, | |
1614 | and write appropriate things to the message log. If it is a child address, we | |
1615 | call child_done() to scan the ancestors and mark them complete if this is the | |
1616 | last child to complete. */ | |
1617 | ||
1618 | address_done(addr, now); | |
1619 | DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address); | |
1620 | ||
d6c82d7b | 1621 | if (!addr->parent) |
059ec3d9 PH |
1622 | deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address, |
1623 | driver_name, driver_kind); | |
059ec3d9 PH |
1624 | else |
1625 | { | |
1626 | deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address, | |
1627 | addr->parent->address, driver_name, driver_kind); | |
1628 | child_done(addr, now); | |
1629 | } | |
1630 | ||
774ef2d7 | 1631 | /* Certificates for logging (via events) */ |
a7538db1 | 1632 | #ifdef SUPPORT_TLS |
9d1c15ef JH |
1633 | tls_out.ourcert = addr->ourcert; |
1634 | addr->ourcert = NULL; | |
1635 | tls_out.peercert = addr->peercert; | |
1636 | addr->peercert = NULL; | |
018058b2 | 1637 | |
018058b2 JH |
1638 | tls_out.cipher = addr->cipher; |
1639 | tls_out.peerdn = addr->peerdn; | |
1640 | tls_out.ocsp = addr->ocsp; | |
c0635b6d | 1641 | # ifdef SUPPORT_DANE |
83b27293 JH |
1642 | tls_out.dane_verified = testflag(addr, af_dane_verified); |
1643 | # endif | |
a7538db1 | 1644 | #endif |
9d1c15ef | 1645 | |
817d9f57 | 1646 | delivery_log(LOG_MAIN, addr, logchar, NULL); |
9d1c15ef | 1647 | |
a7538db1 | 1648 | #ifdef SUPPORT_TLS |
790fbb71 JH |
1649 | tls_free_cert(&tls_out.ourcert); |
1650 | tls_free_cert(&tls_out.peercert); | |
018058b2 JH |
1651 | tls_out.cipher = NULL; |
1652 | tls_out.peerdn = NULL; | |
1653 | tls_out.ocsp = OCSP_NOT_REQ; | |
c0635b6d | 1654 | # ifdef SUPPORT_DANE |
83b27293 JH |
1655 | tls_out.dane_verified = FALSE; |
1656 | # endif | |
a7538db1 | 1657 | #endif |
059ec3d9 PH |
1658 | } |
1659 | ||
1660 | ||
1661 | /* Soft failure, or local delivery process failed; freezing may be | |
1662 | requested. */ | |
1663 | ||
1664 | else if (result == DEFER || result == PANIC) | |
1665 | { | |
1666 | if (result == PANIC) logflags |= LOG_PANIC; | |
1667 | ||
1668 | /* This puts them on the chain in reverse order. Do not change this, because | |
1669 | the code for handling retries assumes that the one with the retry | |
1670 | information is last. */ | |
1671 | ||
1672 | addr->next = addr_defer; | |
1673 | addr_defer = addr; | |
1674 | ||
1675 | /* The only currently implemented special action is to freeze the | |
1676 | message. Logging of this is done later, just before the -H file is | |
1677 | updated. */ | |
1678 | ||
1679 | if (addr->special_action == SPECIAL_FREEZE) | |
1680 | { | |
8768d548 | 1681 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
1682 | deliver_frozen_at = time(NULL); |
1683 | update_spool = TRUE; | |
1684 | } | |
1685 | ||
1686 | /* If doing a 2-stage queue run, we skip writing to either the message | |
1687 | log or the main log for SMTP defers. */ | |
1688 | ||
8768d548 | 1689 | if (!f.queue_2stage || addr->basic_errno != 0) |
5dac72a7 | 1690 | deferral_log(addr, now, logflags, driver_name, driver_kind); |
059ec3d9 PH |
1691 | } |
1692 | ||
1693 | ||
1694 | /* Hard failure. If there is an address to which an error message can be sent, | |
1695 | put this address on the failed list. If not, put it on the deferred list and | |
1696 | freeze the mail message for human attention. The latter action can also be | |
1697 | explicitly requested by a router or transport. */ | |
1698 | ||
1699 | else | |
1700 | { | |
1701 | /* If this is a delivery error, or a message for which no replies are | |
1702 | wanted, and the message's age is greater than ignore_bounce_errors_after, | |
1703 | force the af_ignore_error flag. This will cause the address to be discarded | |
1704 | later (with a log entry). */ | |
1705 | ||
10c50704 | 1706 | if (!*sender_address && message_age >= ignore_bounce_errors_after) |
7eb0e5d2 | 1707 | addr->prop.ignore_error = TRUE; |
059ec3d9 PH |
1708 | |
1709 | /* Freeze the message if requested, or if this is a bounce message (or other | |
652e1b65 PH |
1710 | message with null sender) and this address does not have its own errors |
1711 | address. However, don't freeze if errors are being ignored. The actual code | |
1712 | to ignore occurs later, instead of sending a message. Logging of freezing | |
1713 | occurs later, just before writing the -H file. */ | |
059ec3d9 | 1714 | |
7eb0e5d2 | 1715 | if ( !addr->prop.ignore_error |
d6c82d7b JH |
1716 | && ( addr->special_action == SPECIAL_FREEZE |
1717 | || (sender_address[0] == 0 && !addr->prop.errors_address) | |
1718 | ) ) | |
059ec3d9 | 1719 | { |
d6c82d7b JH |
1720 | frozen_info = addr->special_action == SPECIAL_FREEZE |
1721 | ? US"" | |
8768d548 | 1722 | : f.sender_local && !f.local_error_message |
d6c82d7b JH |
1723 | ? US" (message created with -f <>)" |
1724 | : US" (delivery error message)"; | |
8768d548 | 1725 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
1726 | deliver_frozen_at = time(NULL); |
1727 | update_spool = TRUE; | |
1728 | ||
1729 | /* The address is put on the defer rather than the failed queue, because | |
1730 | the message is being retained. */ | |
1731 | ||
1732 | addr->next = addr_defer; | |
1733 | addr_defer = addr; | |
1734 | } | |
1735 | ||
1736 | /* Don't put the address on the nonrecipients tree yet; wait until an | |
1737 | error message has been successfully sent. */ | |
1738 | ||
1739 | else | |
1740 | { | |
1741 | addr->next = addr_failed; | |
1742 | addr_failed = addr; | |
1743 | } | |
1744 | ||
5dac72a7 | 1745 | failure_log(addr, driver_name ? NULL : driver_kind, now); |
059ec3d9 PH |
1746 | } |
1747 | ||
1748 | /* Ensure logging is turned on again in all cases */ | |
1749 | ||
8768d548 | 1750 | f.disable_logging = FALSE; |
059ec3d9 PH |
1751 | } |
1752 | ||
1753 | ||
1754 | ||
1755 | ||
1756 | /************************************************* | |
1757 | * Address-independent error * | |
1758 | *************************************************/ | |
1759 | ||
1760 | /* This function is called when there's an error that is not dependent on a | |
1761 | particular address, such as an expansion string failure. It puts the error into | |
1762 | all the addresses in a batch, logs the incident on the main and panic logs, and | |
1763 | clears the expansions. It is mostly called from local_deliver(), but can be | |
1764 | called for a remote delivery via findugid(). | |
1765 | ||
1766 | Arguments: | |
1767 | logit TRUE if (MAIN+PANIC) logging required | |
1768 | addr the first of the chain of addresses | |
1769 | code the error code | |
1770 | format format string for error message, or NULL if already set in addr | |
1771 | ... arguments for the format | |
1772 | ||
1773 | Returns: nothing | |
1774 | */ | |
1775 | ||
1776 | static void | |
1777 | common_error(BOOL logit, address_item *addr, int code, uschar *format, ...) | |
1778 | { | |
059ec3d9 PH |
1779 | addr->basic_errno = code; |
1780 | ||
d6c82d7b | 1781 | if (format) |
059ec3d9 PH |
1782 | { |
1783 | va_list ap; | |
d12746bc JH |
1784 | gstring * g; |
1785 | ||
059ec3d9 | 1786 | va_start(ap, format); |
d12746bc | 1787 | g = string_vformat(NULL, TRUE, CS format, ap); |
059ec3d9 | 1788 | va_end(ap); |
d12746bc | 1789 | addr->message = string_from_gstring(g); |
059ec3d9 PH |
1790 | } |
1791 | ||
d7978c0f | 1792 | for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 PH |
1793 | { |
1794 | addr2->basic_errno = code; | |
1795 | addr2->message = addr->message; | |
1796 | } | |
1797 | ||
1798 | if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message); | |
1799 | deliver_set_expansions(NULL); | |
1800 | } | |
1801 | ||
1802 | ||
1803 | ||
1804 | ||
1805 | /************************************************* | |
1806 | * Check a "never users" list * | |
1807 | *************************************************/ | |
1808 | ||
1809 | /* This function is called to check whether a uid is on one of the two "never | |
1810 | users" lists. | |
1811 | ||
1812 | Arguments: | |
1813 | uid the uid to be checked | |
1814 | nusers the list to be scanned; the first item in the list is the count | |
1815 | ||
1816 | Returns: TRUE if the uid is on the list | |
1817 | */ | |
1818 | ||
1819 | static BOOL | |
1820 | check_never_users(uid_t uid, uid_t *nusers) | |
1821 | { | |
d6c82d7b | 1822 | if (!nusers) return FALSE; |
d7978c0f | 1823 | for (int i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE; |
059ec3d9 PH |
1824 | return FALSE; |
1825 | } | |
1826 | ||
1827 | ||
1828 | ||
1829 | /************************************************* | |
1830 | * Find uid and gid for a transport * | |
1831 | *************************************************/ | |
1832 | ||
1833 | /* This function is called for both local and remote deliveries, to find the | |
1834 | uid/gid under which to run the delivery. The values are taken preferentially | |
1835 | from the transport (either explicit or deliver_as_creator), then from the | |
1836 | address (i.e. the router), and if nothing is set, the exim uid/gid are used. If | |
1837 | the resulting uid is on the "never_users" or the "fixed_never_users" list, a | |
1838 | panic error is logged, and the function fails (which normally leads to delivery | |
1839 | deferral). | |
1840 | ||
1841 | Arguments: | |
1842 | addr the address (possibly a chain) | |
1843 | tp the transport | |
1844 | uidp pointer to uid field | |
1845 | gidp pointer to gid field | |
1846 | igfp pointer to the use_initgroups field | |
1847 | ||
1848 | Returns: FALSE if failed - error has been set in address(es) | |
1849 | */ | |
1850 | ||
1851 | static BOOL | |
1852 | findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp, | |
1853 | BOOL *igfp) | |
1854 | { | |
d6c82d7b | 1855 | uschar *nuname; |
059ec3d9 PH |
1856 | BOOL gid_set = FALSE; |
1857 | ||
1858 | /* Default initgroups flag comes from the transport */ | |
1859 | ||
1860 | *igfp = tp->initgroups; | |
1861 | ||
1862 | /* First see if there's a gid on the transport, either fixed or expandable. | |
1863 | The expanding function always logs failure itself. */ | |
1864 | ||
1865 | if (tp->gid_set) | |
1866 | { | |
1867 | *gidp = tp->gid; | |
1868 | gid_set = TRUE; | |
1869 | } | |
d6c82d7b | 1870 | else if (tp->expand_gid) |
059ec3d9 | 1871 | { |
d6c82d7b JH |
1872 | if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp, |
1873 | &(addr->message))) | |
059ec3d9 PH |
1874 | { |
1875 | common_error(FALSE, addr, ERRNO_GIDFAIL, NULL); | |
1876 | return FALSE; | |
1877 | } | |
d6c82d7b | 1878 | gid_set = TRUE; |
059ec3d9 PH |
1879 | } |
1880 | ||
911f6fde PH |
1881 | /* If the transport did not set a group, see if the router did. */ |
1882 | ||
1883 | if (!gid_set && testflag(addr, af_gid_set)) | |
1884 | { | |
1885 | *gidp = addr->gid; | |
1886 | gid_set = TRUE; | |
1887 | } | |
1888 | ||
059ec3d9 PH |
1889 | /* Pick up a uid from the transport if one is set. */ |
1890 | ||
1891 | if (tp->uid_set) *uidp = tp->uid; | |
1892 | ||
1893 | /* Otherwise, try for an expandable uid field. If it ends up as a numeric id, | |
1894 | it does not provide a passwd value from which a gid can be taken. */ | |
1895 | ||
d6c82d7b | 1896 | else if (tp->expand_uid) |
059ec3d9 PH |
1897 | { |
1898 | struct passwd *pw; | |
1899 | if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw, | |
1900 | uidp, &(addr->message))) | |
1901 | { | |
1902 | common_error(FALSE, addr, ERRNO_UIDFAIL, NULL); | |
1903 | return FALSE; | |
1904 | } | |
d6c82d7b | 1905 | if (!gid_set && pw) |
059ec3d9 PH |
1906 | { |
1907 | *gidp = pw->pw_gid; | |
1908 | gid_set = TRUE; | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | /* If the transport doesn't set the uid, test the deliver_as_creator flag. */ | |
1913 | ||
1914 | else if (tp->deliver_as_creator) | |
1915 | { | |
1916 | *uidp = originator_uid; | |
1917 | if (!gid_set) | |
1918 | { | |
1919 | *gidp = originator_gid; | |
1920 | gid_set = TRUE; | |
1921 | } | |
1922 | } | |
1923 | ||
911f6fde PH |
1924 | /* Otherwise see if the address specifies the uid and if so, take it and its |
1925 | initgroups flag. */ | |
059ec3d9 PH |
1926 | |
1927 | else if (testflag(addr, af_uid_set)) | |
1928 | { | |
1929 | *uidp = addr->uid; | |
1930 | *igfp = testflag(addr, af_initgroups); | |
059ec3d9 PH |
1931 | } |
1932 | ||
1933 | /* Nothing has specified the uid - default to the Exim user, and group if the | |
1934 | gid is not set. */ | |
1935 | ||
1936 | else | |
1937 | { | |
1938 | *uidp = exim_uid; | |
1939 | if (!gid_set) | |
1940 | { | |
1941 | *gidp = exim_gid; | |
1942 | gid_set = TRUE; | |
1943 | } | |
1944 | } | |
1945 | ||
911f6fde PH |
1946 | /* If no gid is set, it is a disaster. We default to the Exim gid only if |
1947 | defaulting to the Exim uid. In other words, if the configuration has specified | |
1948 | a uid, it must also provide a gid. */ | |
059ec3d9 PH |
1949 | |
1950 | if (!gid_set) | |
1951 | { | |
1952 | common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for " | |
1953 | "%s transport", tp->name); | |
1954 | return FALSE; | |
1955 | } | |
1956 | ||
1957 | /* Check that the uid is not on the lists of banned uids that may not be used | |
1958 | for delivery processes. */ | |
1959 | ||
d6c82d7b JH |
1960 | nuname = check_never_users(*uidp, never_users) |
1961 | ? US"never_users" | |
1962 | : check_never_users(*uidp, fixed_never_users) | |
1963 | ? US"fixed_never_users" | |
1964 | : NULL; | |
1965 | if (nuname) | |
059ec3d9 PH |
1966 | { |
1967 | common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport " | |
1968 | "is on the %s list", (long int)(*uidp), tp->name, nuname); | |
1969 | return FALSE; | |
1970 | } | |
1971 | ||
1972 | /* All is well */ | |
1973 | ||
1974 | return TRUE; | |
1975 | } | |
1976 | ||
1977 | ||
1978 | ||
1979 | ||
1980 | /************************************************* | |
1981 | * Check the size of a message for a transport * | |
1982 | *************************************************/ | |
1983 | ||
1984 | /* Checks that the message isn't too big for the selected transport. | |
1985 | This is called only when it is known that the limit is set. | |
1986 | ||
1987 | Arguments: | |
1988 | tp the transport | |
1989 | addr the (first) address being delivered | |
1990 | ||
1991 | Returns: OK | |
1992 | DEFER expansion failed or did not yield an integer | |
1993 | FAIL message too big | |
1994 | */ | |
1995 | ||
1996 | int | |
1997 | check_message_size(transport_instance *tp, address_item *addr) | |
1998 | { | |
1999 | int rc = OK; | |
2000 | int size_limit; | |
2001 | ||
2002 | deliver_set_expansions(addr); | |
d45b1de8 | 2003 | size_limit = expand_string_integer(tp->message_size_limit, TRUE); |
059ec3d9 PH |
2004 | deliver_set_expansions(NULL); |
2005 | ||
d6c82d7b | 2006 | if (expand_string_message) |
059ec3d9 PH |
2007 | { |
2008 | rc = DEFER; | |
d6c82d7b JH |
2009 | addr->message = size_limit == -1 |
2010 | ? string_sprintf("failed to expand message_size_limit " | |
2011 | "in %s transport: %s", tp->name, expand_string_message) | |
2012 | : string_sprintf("invalid message_size_limit " | |
059ec3d9 PH |
2013 | "in %s transport: %s", tp->name, expand_string_message); |
2014 | } | |
2015 | else if (size_limit > 0 && message_size > size_limit) | |
2016 | { | |
2017 | rc = FAIL; | |
2018 | addr->message = | |
2019 | string_sprintf("message is too big (transport limit = %d)", | |
2020 | size_limit); | |
2021 | } | |
2022 | ||
2023 | return rc; | |
2024 | } | |
2025 | ||
2026 | ||
2027 | ||
2028 | /************************************************* | |
2029 | * Transport-time check for a previous delivery * | |
2030 | *************************************************/ | |
2031 | ||
2032 | /* Check that this base address hasn't previously been delivered to its routed | |
c2c19e9d PH |
2033 | transport. If it has been delivered, mark it done. The check is necessary at |
2034 | delivery time in order to handle homonymic addresses correctly in cases where | |
2035 | the pattern of redirection changes between delivery attempts (so the unique | |
2036 | fields change). Non-homonymic previous delivery is detected earlier, at routing | |
2037 | time (which saves unnecessary routing). | |
2038 | ||
2039 | Arguments: | |
2040 | addr the address item | |
2041 | testing TRUE if testing wanted only, without side effects | |
059ec3d9 | 2042 | |
059ec3d9 PH |
2043 | Returns: TRUE if previously delivered by the transport |
2044 | */ | |
2045 | ||
2046 | static BOOL | |
c2c19e9d | 2047 | previously_transported(address_item *addr, BOOL testing) |
059ec3d9 PH |
2048 | { |
2049 | (void)string_format(big_buffer, big_buffer_size, "%s/%s", | |
2050 | addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name); | |
2051 | ||
2052 | if (tree_search(tree_nonrecipients, big_buffer) != 0) | |
2053 | { | |
2054 | DEBUG(D_deliver|D_route|D_transport) | |
2055 | debug_printf("%s was previously delivered (%s transport): discarded\n", | |
2056 | addr->address, addr->transport->name); | |
c2c19e9d | 2057 | if (!testing) child_done(addr, tod_stamp(tod_log)); |
059ec3d9 PH |
2058 | return TRUE; |
2059 | } | |
2060 | ||
2061 | return FALSE; | |
2062 | } | |
2063 | ||
2064 | ||
2065 | ||
064a94c9 PH |
2066 | /****************************************************** |
2067 | * Check for a given header in a header string * | |
2068 | ******************************************************/ | |
2069 | ||
2070 | /* This function is used when generating quota warnings. The configuration may | |
2071 | specify any header lines it likes in quota_warn_message. If certain of them are | |
2072 | missing, defaults are inserted, so we need to be able to test for the presence | |
2073 | of a given header. | |
2074 | ||
2075 | Arguments: | |
2076 | hdr the required header name | |
2077 | hstring the header string | |
2078 | ||
2079 | Returns: TRUE the header is in the string | |
2080 | FALSE the header is not in the string | |
2081 | */ | |
2082 | ||
2083 | static BOOL | |
2084 | contains_header(uschar *hdr, uschar *hstring) | |
2085 | { | |
2086 | int len = Ustrlen(hdr); | |
2087 | uschar *p = hstring; | |
2088 | while (*p != 0) | |
2089 | { | |
2090 | if (strncmpic(p, hdr, len) == 0) | |
2091 | { | |
2092 | p += len; | |
2093 | while (*p == ' ' || *p == '\t') p++; | |
2094 | if (*p == ':') return TRUE; | |
2095 | } | |
2096 | while (*p != 0 && *p != '\n') p++; | |
2097 | if (*p == '\n') p++; | |
2098 | } | |
2099 | return FALSE; | |
2100 | } | |
2101 | ||
2102 | ||
2103 | ||
059ec3d9 PH |
2104 | |
2105 | /************************************************* | |
2106 | * Perform a local delivery * | |
2107 | *************************************************/ | |
2108 | ||
2109 | /* Each local delivery is performed in a separate process which sets its | |
2110 | uid and gid as specified. This is a safer way than simply changing and | |
2111 | restoring using seteuid(); there is a body of opinion that seteuid() cannot be | |
2112 | used safely. From release 4, Exim no longer makes any use of it. Besides, not | |
2113 | all systems have seteuid(). | |
2114 | ||
2115 | If the uid/gid are specified in the transport_instance, they are used; the | |
2116 | transport initialization must ensure that either both or neither are set. | |
2117 | Otherwise, the values associated with the address are used. If neither are set, | |
2118 | it is a configuration error. | |
2119 | ||
2120 | The transport or the address may specify a home directory (transport over- | |
2121 | rides), and if they do, this is set as $home. If neither have set a working | |
2122 | directory, this value is used for that as well. Otherwise $home is left unset | |
2123 | and the cwd is set to "/" - a directory that should be accessible to all users. | |
2124 | ||
2125 | Using a separate process makes it more complicated to get error information | |
2126 | back. We use a pipe to pass the return code and also an error code and error | |
2127 | text string back to the parent process. | |
2128 | ||
2129 | Arguments: | |
2130 | addr points to an address block for this delivery; for "normal" local | |
2131 | deliveries this is the only address to be delivered, but for | |
2132 | pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe) | |
2133 | a number of addresses can be handled simultaneously, and in this | |
2134 | case addr will point to a chain of addresses with the same | |
2135 | characteristics. | |
2136 | ||
2137 | shadowing TRUE if running a shadow transport; this causes output from pipes | |
2138 | to be ignored. | |
2139 | ||
2140 | Returns: nothing | |
2141 | */ | |
2142 | ||
2143 | static void | |
2144 | deliver_local(address_item *addr, BOOL shadowing) | |
2145 | { | |
2146 | BOOL use_initgroups; | |
2147 | uid_t uid; | |
2148 | gid_t gid; | |
2149 | int status, len, rc; | |
2150 | int pfd[2]; | |
2151 | pid_t pid; | |
2152 | uschar *working_directory; | |
2153 | address_item *addr2; | |
2154 | transport_instance *tp = addr->transport; | |
2155 | ||
2156 | /* Set up the return path from the errors or sender address. If the transport | |
2157 | has its own return path setting, expand it and replace the existing value. */ | |
2158 | ||
d6c82d7b | 2159 | if(addr->prop.errors_address) |
d43cbe25 | 2160 | return_path = addr->prop.errors_address; |
384152a6 | 2161 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 2162 | else if (addr->prop.srs_sender) |
d43cbe25 | 2163 | return_path = addr->prop.srs_sender; |
384152a6 TK |
2164 | #endif |
2165 | else | |
2166 | return_path = sender_address; | |
059ec3d9 | 2167 | |
d6c82d7b | 2168 | if (tp->return_path) |
059ec3d9 PH |
2169 | { |
2170 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b | 2171 | if (!new_return_path) |
059ec3d9 | 2172 | { |
8768d548 | 2173 | if (!f.expand_string_forcedfail) |
059ec3d9 PH |
2174 | { |
2175 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, | |
2176 | US"Failed to expand return path \"%s\" in %s transport: %s", | |
2177 | tp->return_path, tp->name, expand_string_message); | |
2178 | return; | |
2179 | } | |
2180 | } | |
2181 | else return_path = new_return_path; | |
2182 | } | |
2183 | ||
2184 | /* For local deliveries, one at a time, the value used for logging can just be | |
2185 | set directly, once and for all. */ | |
2186 | ||
2187 | used_return_path = return_path; | |
2188 | ||
2189 | /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message | |
2190 | gets put into the address(es), and the expansions are unset, so we can just | |
2191 | return. */ | |
2192 | ||
2193 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return; | |
2194 | ||
5418e93b PH |
2195 | /* See if either the transport or the address specifies a home directory. A |
2196 | home directory set in the address may already be expanded; a flag is set to | |
2197 | indicate that. In other cases we must expand it. */ | |
059ec3d9 | 2198 | |
d6c82d7b JH |
2199 | if ( (deliver_home = tp->home_dir) /* Set in transport, or */ |
2200 | || ( (deliver_home = addr->home_dir) /* Set in address and */ | |
2201 | && !testflag(addr, af_home_expanded) /* not expanded */ | |
2202 | ) ) | |
059ec3d9 PH |
2203 | { |
2204 | uschar *rawhome = deliver_home; | |
2205 | deliver_home = NULL; /* in case it contains $home */ | |
d6c82d7b | 2206 | if (!(deliver_home = expand_string(rawhome))) |
059ec3d9 PH |
2207 | { |
2208 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed " | |
2209 | "to expand for %s transport: %s", rawhome, tp->name, | |
2210 | expand_string_message); | |
2211 | return; | |
2212 | } | |
2213 | if (*deliver_home != '/') | |
2214 | { | |
2215 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" " | |
2216 | "is not absolute for %s transport", deliver_home, tp->name); | |
2217 | return; | |
2218 | } | |
2219 | } | |
2220 | ||
5418e93b PH |
2221 | /* See if either the transport or the address specifies a current directory, |
2222 | and if so, expand it. If nothing is set, use the home directory, unless it is | |
2223 | also unset in which case use "/", which is assumed to be a directory to which | |
2224 | all users have access. It is necessary to be in a visible directory for some | |
2225 | operating systems when running pipes, as some commands (e.g. "rm" under Solaris | |
2226 | 2.5) require this. */ | |
2227 | ||
d6c82d7b JH |
2228 | working_directory = tp->current_dir ? tp->current_dir : addr->current_dir; |
2229 | if (working_directory) | |
059ec3d9 PH |
2230 | { |
2231 | uschar *raw = working_directory; | |
d6c82d7b | 2232 | if (!(working_directory = expand_string(raw))) |
059ec3d9 PH |
2233 | { |
2234 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" " | |
2235 | "failed to expand for %s transport: %s", raw, tp->name, | |
2236 | expand_string_message); | |
2237 | return; | |
2238 | } | |
2239 | if (*working_directory != '/') | |
2240 | { | |
2241 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path " | |
2242 | "\"%s\" is not absolute for %s transport", working_directory, tp->name); | |
2243 | return; | |
2244 | } | |
2245 | } | |
d6c82d7b | 2246 | else working_directory = deliver_home ? deliver_home : US"/"; |
059ec3d9 PH |
2247 | |
2248 | /* If one of the return_output flags is set on the transport, create and open a | |
2249 | file in the message log directory for the transport to write its output onto. | |
2250 | This is mainly used by pipe transports. The file needs to be unique to the | |
2251 | address. This feature is not available for shadow transports. */ | |
2252 | ||
d6c82d7b JH |
2253 | if ( !shadowing |
2254 | && ( tp->return_output || tp->return_fail_output | |
ec0eb1a3 | 2255 | || tp->log_output || tp->log_fail_output || tp->log_defer_output |
d6c82d7b | 2256 | ) ) |
059ec3d9 | 2257 | { |
41313d92 JH |
2258 | uschar * error; |
2259 | ||
059ec3d9 | 2260 | addr->return_filename = |
41313d92 JH |
2261 | spool_fname(US"msglog", message_subdir, message_id, |
2262 | string_sprintf("-%d-%d", getpid(), return_count++)); | |
4c0a7a9c | 2263 | |
41313d92 | 2264 | if ((addr->return_file = open_msglog_file(addr->return_filename, 0400, &error)) < 0) |
059ec3d9 PH |
2265 | { |
2266 | common_error(TRUE, addr, errno, US"Unable to %s file for %s transport " | |
2267 | "to return message: %s", error, tp->name, strerror(errno)); | |
2268 | return; | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | /* Create the pipe for inter-process communication. */ | |
2273 | ||
2274 | if (pipe(pfd) != 0) | |
2275 | { | |
2276 | common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s", | |
2277 | strerror(errno)); | |
2278 | return; | |
2279 | } | |
2280 | ||
2281 | /* Now fork the process to do the real work in the subprocess, but first | |
2282 | ensure that all cached resources are freed so that the subprocess starts with | |
2283 | a clean slate and doesn't interfere with the parent process. */ | |
2284 | ||
2285 | search_tidyup(); | |
2286 | ||
2287 | if ((pid = fork()) == 0) | |
2288 | { | |
2289 | BOOL replicate = TRUE; | |
2290 | ||
2291 | /* Prevent core dumps, as we don't want them in users' home directories. | |
2292 | HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that | |
2293 | system. Some experimental/developing systems (e.g. GNU/Hurd) may define | |
2294 | RLIMIT_CORE but not support it in setrlimit(). For such systems, do not | |
a29e5231 PP |
2295 | complain if the error is "not supported". |
2296 | ||
2297 | There are two scenarios where changing the max limit has an effect. In one, | |
2298 | the user is using a .forward and invoking a command of their choice via pipe; | |
2299 | for these, we do need the max limit to be 0 unless the admin chooses to | |
2300 | permit an increased limit. In the other, the command is invoked directly by | |
2301 | the transport and is under administrator control, thus being able to raise | |
2302 | the limit aids in debugging. So there's no general always-right answer. | |
2303 | ||
2304 | Thus we inhibit core-dumps completely but let individual transports, while | |
2305 | still root, re-raise the limits back up to aid debugging. We make the | |
2306 | default be no core-dumps -- few enough people can use core dumps in | |
2307 | diagnosis that it's reasonable to make them something that has to be explicitly requested. | |
2308 | */ | |
059ec3d9 | 2309 | |
a7538db1 | 2310 | #ifdef RLIMIT_CORE |
059ec3d9 PH |
2311 | struct rlimit rl; |
2312 | rl.rlim_cur = 0; | |
2313 | rl.rlim_max = 0; | |
2314 | if (setrlimit(RLIMIT_CORE, &rl) < 0) | |
2315 | { | |
a7538db1 | 2316 | # ifdef SETRLIMIT_NOT_SUPPORTED |
059ec3d9 | 2317 | if (errno != ENOSYS && errno != ENOTSUP) |
a7538db1 | 2318 | # endif |
059ec3d9 PH |
2319 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s", |
2320 | strerror(errno)); | |
2321 | } | |
a7538db1 | 2322 | #endif |
059ec3d9 PH |
2323 | |
2324 | /* Reset the random number generator, so different processes don't all | |
2325 | have the same sequence. */ | |
2326 | ||
2327 | random_seed = 0; | |
2328 | ||
2329 | /* If the transport has a setup entry, call this first, while still | |
2330 | privileged. (Appendfile uses this to expand quota, for example, while | |
2331 | able to read private files.) */ | |
2332 | ||
d6c82d7b | 2333 | if (addr->transport->setup) |
929ba01c | 2334 | switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid, |
059ec3d9 PH |
2335 | &(addr->message))) |
2336 | { | |
2337 | case DEFER: | |
d6c82d7b JH |
2338 | addr->transport_return = DEFER; |
2339 | goto PASS_BACK; | |
059ec3d9 PH |
2340 | |
2341 | case FAIL: | |
d6c82d7b JH |
2342 | addr->transport_return = PANIC; |
2343 | goto PASS_BACK; | |
059ec3d9 | 2344 | } |
059ec3d9 PH |
2345 | |
2346 | /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as | |
2347 | when the process becomes unprivileged, it won't be able to write to the | |
2348 | process log. SIGHUP is ignored throughout exim, except when it is being | |
2349 | run as a daemon. */ | |
2350 | ||
2351 | signal(SIGINT, SIG_IGN); | |
2352 | signal(SIGTERM, SIG_IGN); | |
2353 | signal(SIGUSR1, SIG_IGN); | |
2354 | ||
2355 | /* Close the unwanted half of the pipe, and set close-on-exec for the other | |
2356 | half - for transports that exec things (e.g. pipe). Then set the required | |
2357 | gid/uid. */ | |
2358 | ||
f1e894f3 | 2359 | (void)close(pfd[pipe_read]); |
ff790e47 | 2360 | (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) | |
059ec3d9 PH |
2361 | FD_CLOEXEC); |
2362 | exim_setugid(uid, gid, use_initgroups, | |
2363 | string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part, | |
2364 | addr->address, addr->transport->name)); | |
2365 | ||
2366 | DEBUG(D_deliver) | |
2367 | { | |
059ec3d9 | 2368 | debug_printf(" home=%s current=%s\n", deliver_home, working_directory); |
d7978c0f | 2369 | for (address_item * batched = addr->next; batched; batched = batched->next) |
059ec3d9 PH |
2370 | debug_printf("additional batched address: %s\n", batched->address); |
2371 | } | |
2372 | ||
2373 | /* Set an appropriate working directory. */ | |
2374 | ||
2375 | if (Uchdir(working_directory) < 0) | |
2376 | { | |
2377 | addr->transport_return = DEFER; | |
2378 | addr->basic_errno = errno; | |
2379 | addr->message = string_sprintf("failed to chdir to %s", working_directory); | |
2380 | } | |
2381 | ||
2382 | /* If successful, call the transport */ | |
2383 | ||
2384 | else | |
2385 | { | |
2386 | BOOL ok = TRUE; | |
2387 | set_process_info("delivering %s to %s using %s", message_id, | |
2388 | addr->local_part, addr->transport->name); | |
2389 | ||
2a47f028 JH |
2390 | /* Setting this global in the subprocess means we need never clear it */ |
2391 | transport_name = addr->transport->name; | |
2392 | ||
059ec3d9 PH |
2393 | /* If a transport filter has been specified, set up its argument list. |
2394 | Any errors will get put into the address, and FALSE yielded. */ | |
2395 | ||
d6c82d7b | 2396 | if (addr->transport->filter_command) |
059ec3d9 PH |
2397 | { |
2398 | ok = transport_set_up_command(&transport_filter_argv, | |
2399 | addr->transport->filter_command, | |
2400 | TRUE, PANIC, addr, US"transport filter", NULL); | |
2401 | transport_filter_timeout = addr->transport->filter_timeout; | |
2402 | } | |
2403 | else transport_filter_argv = NULL; | |
2404 | ||
2405 | if (ok) | |
2406 | { | |
2407 | debug_print_string(addr->transport->debug_string); | |
2408 | replicate = !(addr->transport->info->code)(addr->transport, addr); | |
2409 | } | |
2410 | } | |
2411 | ||
2412 | /* Pass the results back down the pipe. If necessary, first replicate the | |
2413 | status in the top address to the others in the batch. The label is the | |
2414 | subject of a goto when a call to the transport's setup function fails. We | |
2415 | pass the pointer to the transport back in case it got changed as a result of | |
2416 | file_format in appendfile. */ | |
2417 | ||
2418 | PASS_BACK: | |
2419 | ||
2420 | if (replicate) replicate_status(addr); | |
d6c82d7b | 2421 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 PH |
2422 | { |
2423 | int i; | |
2424 | int local_part_length = Ustrlen(addr2->local_part); | |
2425 | uschar *s; | |
1ac6b2e7 | 2426 | int ret; |
059ec3d9 | 2427 | |
d6c82d7b JH |
2428 | if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int) |
2429 | || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count) | |
2430 | || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags) | |
2431 | || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int) | |
2432 | || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int) | |
32dfdf8b | 2433 | || (ret = write(pfd[pipe_write], &addr2->delivery_usec, sizeof(int))) != sizeof(int) |
d6c82d7b JH |
2434 | || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int) |
2435 | || (ret = write(pfd[pipe_write], &addr2->transport, | |
1ac6b2e7 | 2436 | sizeof(transport_instance *))) != sizeof(transport_instance *) |
059ec3d9 PH |
2437 | |
2438 | /* For a file delivery, pass back the local part, in case the original | |
2439 | was only part of the final delivery path. This gives more complete | |
2440 | logging. */ | |
2441 | ||
1ac6b2e7 | 2442 | || (testflag(addr2, af_file) |
d6c82d7b | 2443 | && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int) |
1ac6b2e7 JH |
2444 | || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length |
2445 | ) | |
2446 | ) | |
2447 | ) | |
a23ff3b4 | 2448 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
1ac6b2e7 | 2449 | ret == -1 ? strerror(errno) : "short write"); |
059ec3d9 PH |
2450 | |
2451 | /* Now any messages */ | |
2452 | ||
2453 | for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message) | |
2454 | { | |
d6c82d7b JH |
2455 | int message_length = s ? Ustrlen(s) + 1 : 0; |
2456 | if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int) | |
2457 | || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length | |
1ac6b2e7 | 2458 | ) |
a23ff3b4 | 2459 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
1ac6b2e7 | 2460 | ret == -1 ? strerror(errno) : "short write"); |
059ec3d9 PH |
2461 | } |
2462 | } | |
2463 | ||
2464 | /* OK, this process is now done. Free any cached resources that it opened, | |
2465 | and close the pipe we were writing down before exiting. */ | |
2466 | ||
f1e894f3 | 2467 | (void)close(pfd[pipe_write]); |
059ec3d9 PH |
2468 | search_tidyup(); |
2469 | exit(EXIT_SUCCESS); | |
2470 | } | |
2471 | ||
2472 | /* Back in the main process: panic if the fork did not succeed. This seems | |
2473 | better than returning an error - if forking is failing it is probably best | |
2474 | not to try other deliveries for this message. */ | |
2475 | ||
2476 | if (pid < 0) | |
2477 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s", | |
2478 | addr->address); | |
2479 | ||
2480 | /* Read the pipe to get the delivery status codes and error messages. Our copy | |
2481 | of the writing end must be closed first, as otherwise read() won't return zero | |
2482 | on an empty pipe. We check that a status exists for each address before | |
2483 | overwriting the address structure. If data is missing, the default DEFER status | |
2484 | will remain. Afterwards, close the reading end. */ | |
2485 | ||
f1e894f3 | 2486 | (void)close(pfd[pipe_write]); |
059ec3d9 | 2487 | |
d6c82d7b | 2488 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 | 2489 | { |
d88f0784 | 2490 | if ((len = read(pfd[pipe_read], &status, sizeof(int))) > 0) |
059ec3d9 PH |
2491 | { |
2492 | int i; | |
2493 | uschar **sptr; | |
2494 | ||
2495 | addr2->transport_return = status; | |
d6c82d7b | 2496 | len = read(pfd[pipe_read], &transport_count, |
059ec3d9 | 2497 | sizeof(transport_count)); |
d6c82d7b JH |
2498 | len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags)); |
2499 | len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int)); | |
2500 | len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int)); | |
32dfdf8b | 2501 | len = read(pfd[pipe_read], &addr2->delivery_usec, sizeof(int)); |
d6c82d7b JH |
2502 | len = read(pfd[pipe_read], &addr2->special_action, sizeof(int)); |
2503 | len = read(pfd[pipe_read], &addr2->transport, | |
059ec3d9 PH |
2504 | sizeof(transport_instance *)); |
2505 | ||
2506 | if (testflag(addr2, af_file)) | |
2507 | { | |
d88f0784 JH |
2508 | int llen; |
2509 | if ( read(pfd[pipe_read], &llen, sizeof(int)) != sizeof(int) | |
2510 | || llen > 64*4 /* limit from rfc 5821, times I18N factor */ | |
2511 | ) | |
2512 | { | |
2513 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part length read" | |
2514 | " from delivery subprocess"); | |
2515 | break; | |
2516 | } | |
2517 | /* sanity-checked llen so disable the Coverity error */ | |
2518 | /* coverity[tainted_data] */ | |
2519 | if (read(pfd[pipe_read], big_buffer, llen) != llen) | |
2520 | { | |
2521 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part read" | |
2522 | " from delivery subprocess"); | |
2523 | break; | |
2524 | } | |
2525 | big_buffer[llen] = 0; | |
059ec3d9 PH |
2526 | addr2->local_part = string_copy(big_buffer); |
2527 | } | |
2528 | ||
d6c82d7b | 2529 | for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message) |
059ec3d9 PH |
2530 | { |
2531 | int message_length; | |
d6c82d7b | 2532 | len = read(pfd[pipe_read], &message_length, sizeof(int)); |
059ec3d9 PH |
2533 | if (message_length > 0) |
2534 | { | |
d6c82d7b | 2535 | len = read(pfd[pipe_read], big_buffer, message_length); |
dc8091e7 | 2536 | big_buffer[big_buffer_size-1] = '\0'; /* guard byte */ |
059ec3d9 PH |
2537 | if (len > 0) *sptr = string_copy(big_buffer); |
2538 | } | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | else | |
2543 | { | |
2544 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s " | |
2545 | "from delivery subprocess", addr2->unique); | |
2546 | break; | |
2547 | } | |
2548 | } | |
2549 | ||
f1e894f3 | 2550 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
2551 | |
2552 | /* Unless shadowing, write all successful addresses immediately to the journal | |
2553 | file, to ensure they are recorded asap. For homonymic addresses, use the base | |
2554 | address plus the transport name. Failure to write the journal is panic-worthy, | |
2555 | but don't stop, as it may prove possible subsequently to update the spool file | |
2556 | in order to record the delivery. */ | |
2557 | ||
2558 | if (!shadowing) | |
2559 | { | |
d6c82d7b JH |
2560 | for (addr2 = addr; addr2; addr2 = addr2->next) |
2561 | if (addr2->transport_return == OK) | |
2562 | { | |
2563 | if (testflag(addr2, af_homonym)) | |
2564 | sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name); | |
2565 | else | |
2566 | sprintf(CS big_buffer, "%.500s\n", addr2->unique); | |
059ec3d9 | 2567 | |
d6c82d7b JH |
2568 | /* In the test harness, wait just a bit to let the subprocess finish off |
2569 | any debug output etc first. */ | |
059ec3d9 | 2570 | |
8768d548 | 2571 | if (f.running_in_test_harness) millisleep(300); |
059ec3d9 | 2572 | |
d6c82d7b JH |
2573 | DEBUG(D_deliver) debug_printf("journalling %s", big_buffer); |
2574 | len = Ustrlen(big_buffer); | |
2575 | if (write(journal_fd, big_buffer, len) != len) | |
2576 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s", | |
2577 | big_buffer, strerror(errno)); | |
2578 | } | |
059ec3d9 PH |
2579 | |
2580 | /* Ensure the journal file is pushed out to disk. */ | |
2581 | ||
54fc8428 | 2582 | if (EXIMfsync(journal_fd) < 0) |
059ec3d9 PH |
2583 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s", |
2584 | strerror(errno)); | |
2585 | } | |
2586 | ||
2587 | /* Wait for the process to finish. If it terminates with a non-zero code, | |
2588 | freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the | |
2589 | status values of all the addresses as they are. Take care to handle the case | |
2590 | when the subprocess doesn't seem to exist. This has been seen on one system | |
2591 | when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that | |
2592 | happens, wait() doesn't recognize the termination of child processes. Exim now | |
2593 | resets SIGCHLD to SIG_DFL, but this code should still be robust. */ | |
2594 | ||
2595 | while ((rc = wait(&status)) != pid) | |
059ec3d9 PH |
2596 | if (rc < 0 && errno == ECHILD) /* Process has vanished */ |
2597 | { | |
2598 | log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly", | |
2599 | addr->transport->driver_name); | |
2600 | status = 0; | |
2601 | break; | |
2602 | } | |
059ec3d9 PH |
2603 | |
2604 | if ((status & 0xffff) != 0) | |
2605 | { | |
2606 | int msb = (status >> 8) & 255; | |
2607 | int lsb = status & 255; | |
2608 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
2609 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
2610 | addr->special_action = SPECIAL_FREEZE; | |
2611 | log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero " | |
2612 | "status 0x%04x: %s %d", | |
2613 | addr->transport->driver_name, | |
2614 | status, | |
d6c82d7b | 2615 | msb == 0 ? "terminated by signal" : "exit code", |
059ec3d9 PH |
2616 | code); |
2617 | } | |
2618 | ||
2619 | /* If SPECIAL_WARN is set in the top address, send a warning message. */ | |
2620 | ||
d6c82d7b | 2621 | if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message) |
059ec3d9 PH |
2622 | { |
2623 | int fd; | |
2624 | uschar *warn_message; | |
d6c82d7b | 2625 | pid_t pid; |
059ec3d9 PH |
2626 | |
2627 | DEBUG(D_deliver) debug_printf("Warning message requested by transport\n"); | |
2628 | ||
d6c82d7b | 2629 | if (!(warn_message = expand_string(addr->transport->warn_message))) |
059ec3d9 PH |
2630 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning " |
2631 | "message for %s transport): %s", addr->transport->warn_message, | |
2632 | addr->transport->name, expand_string_message); | |
d6c82d7b JH |
2633 | |
2634 | else if ((pid = child_open_exim(&fd)) > 0) | |
059ec3d9 | 2635 | { |
d6c82d7b JH |
2636 | FILE *f = fdopen(fd, "wb"); |
2637 | if (errors_reply_to && !contains_header(US"Reply-To", warn_message)) | |
2638 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
2639 | fprintf(f, "Auto-Submitted: auto-replied\n"); | |
2640 | if (!contains_header(US"From", warn_message)) | |
2641 | moan_write_from(f); | |
2642 | fprintf(f, "%s", CS warn_message); | |
059ec3d9 | 2643 | |
d6c82d7b | 2644 | /* Close and wait for child process to complete, without a timeout. */ |
059ec3d9 | 2645 | |
d6c82d7b JH |
2646 | (void)fclose(f); |
2647 | (void)child_close(pid, 0); | |
059ec3d9 PH |
2648 | } |
2649 | ||
2650 | addr->special_action = SPECIAL_NONE; | |
2651 | } | |
2652 | } | |
2653 | ||
2654 | ||
2655 | ||
fa41615d | 2656 | |
3070ceee JH |
2657 | /* Check transport for the given concurrency limit. Return TRUE if over |
2658 | the limit (or an expansion failure), else FALSE and if there was a limit, | |
2659 | the key for the hints database used for the concurrency count. */ | |
fa41615d | 2660 | |
3070ceee JH |
2661 | static BOOL |
2662 | tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key) | |
fa41615d | 2663 | { |
3070ceee JH |
2664 | unsigned max_parallel; |
2665 | ||
2666 | if (!tp->max_parallel) return FALSE; | |
2667 | ||
2668 | max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE); | |
2669 | if (expand_string_message) | |
2670 | { | |
2671 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option " | |
2672 | "in %s transport (%s): %s", tp->name, addr->address, | |
2673 | expand_string_message); | |
2674 | return TRUE; | |
2675 | } | |
2676 | ||
2677 | if (max_parallel > 0) | |
2678 | { | |
2679 | uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name); | |
2680 | if (!enq_start(serialize_key, max_parallel)) | |
2681 | { | |
2682 | address_item * next; | |
2683 | DEBUG(D_transport) | |
2684 | debug_printf("skipping tpt %s because concurrency limit %u reached\n", | |
2685 | tp->name, max_parallel); | |
2686 | do | |
2687 | { | |
2688 | next = addr->next; | |
2689 | addr->message = US"concurrency limit reached for transport"; | |
2690 | addr->basic_errno = ERRNO_TRETRY; | |
ba936fb8 | 2691 | post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); |
3070ceee JH |
2692 | } while ((addr = next)); |
2693 | return TRUE; | |
2694 | } | |
2695 | *key = serialize_key; | |
2696 | } | |
2697 | return FALSE; | |
fa41615d JH |
2698 | } |
2699 | ||
2700 | ||
2701 | ||
059ec3d9 PH |
2702 | /************************************************* |
2703 | * Do local deliveries * | |
2704 | *************************************************/ | |
2705 | ||
2706 | /* This function processes the list of addresses in addr_local. True local | |
2707 | deliveries are always done one address at a time. However, local deliveries can | |
2708 | be batched up in some cases. Typically this is when writing batched SMTP output | |
2709 | files for use by some external transport mechanism, or when running local | |
2710 | deliveries over LMTP. | |
2711 | ||
2712 | Arguments: None | |
2713 | Returns: Nothing | |
2714 | */ | |
2715 | ||
2716 | static void | |
2717 | do_local_deliveries(void) | |
2718 | { | |
2719 | open_db dbblock; | |
2720 | open_db *dbm_file = NULL; | |
2721 | time_t now = time(NULL); | |
2722 | ||
2723 | /* Loop until we have exhausted the supply of local deliveries */ | |
2724 | ||
d6c82d7b | 2725 | while (addr_local) |
059ec3d9 | 2726 | { |
32dfdf8b JH |
2727 | struct timeval delivery_start; |
2728 | struct timeval deliver_time; | |
059ec3d9 PH |
2729 | address_item *addr2, *addr3, *nextaddr; |
2730 | int logflags = LOG_MAIN; | |
8768d548 | 2731 | int logchar = f.dont_deliver? '*' : '='; |
059ec3d9 | 2732 | transport_instance *tp; |
fa41615d | 2733 | uschar * serialize_key = NULL; |
059ec3d9 PH |
2734 | |
2735 | /* Pick the first undelivered address off the chain */ | |
2736 | ||
2737 | address_item *addr = addr_local; | |
2738 | addr_local = addr->next; | |
2739 | addr->next = NULL; | |
2740 | ||
2741 | DEBUG(D_deliver|D_transport) | |
2742 | debug_printf("--------> %s <--------\n", addr->address); | |
2743 | ||
2744 | /* An internal disaster if there is no transport. Should not occur! */ | |
2745 | ||
d6c82d7b | 2746 | if (!(tp = addr->transport)) |
059ec3d9 PH |
2747 | { |
2748 | logflags |= LOG_PANIC; | |
8768d548 | 2749 | f.disable_logging = FALSE; /* Jic */ |
d6c82d7b JH |
2750 | addr->message = addr->router |
2751 | ? string_sprintf("No transport set by %s router", addr->router->name) | |
2752 | : string_sprintf("No transport set by system filter"); | |
ba936fb8 | 2753 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2754 | continue; |
2755 | } | |
2756 | ||
2757 | /* Check that this base address hasn't previously been delivered to this | |
2758 | transport. The check is necessary at this point to handle homonymic addresses | |
2759 | correctly in cases where the pattern of redirection changes between delivery | |
2760 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
2761 | time. */ | |
2762 | ||
c2c19e9d | 2763 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
2764 | |
2765 | /* There are weird cases where logging is disabled */ | |
2766 | ||
8768d548 | 2767 | f.disable_logging = tp->disable_logging; |
059ec3d9 | 2768 | |
f7fd3850 PH |
2769 | /* Check for batched addresses and possible amalgamation. Skip all the work |
2770 | if either batch_max <= 1 or there aren't any other addresses for local | |
2771 | delivery. */ | |
059ec3d9 | 2772 | |
d6c82d7b | 2773 | if (tp->batch_max > 1 && addr_local) |
059ec3d9 PH |
2774 | { |
2775 | int batch_count = 1; | |
2776 | BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain"); | |
d6c82d7b JH |
2777 | BOOL uses_lp = ( testflag(addr, af_pfr) |
2778 | && (testflag(addr, af_file) || addr->local_part[0] == '|') | |
2779 | ) | |
2780 | || readconf_depends((driver_instance *)tp, US"local_part"); | |
059ec3d9 PH |
2781 | uschar *batch_id = NULL; |
2782 | address_item **anchor = &addr_local; | |
2783 | address_item *last = addr; | |
2784 | address_item *next; | |
2785 | ||
2786 | /* Expand the batch_id string for comparison with other addresses. | |
2787 | Expansion failure suppresses batching. */ | |
2788 | ||
d6c82d7b | 2789 | if (tp->batch_id) |
059ec3d9 PH |
2790 | { |
2791 | deliver_set_expansions(addr); | |
2792 | batch_id = expand_string(tp->batch_id); | |
2793 | deliver_set_expansions(NULL); | |
d6c82d7b | 2794 | if (!batch_id) |
059ec3d9 PH |
2795 | { |
2796 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2797 | "in %s transport (%s): %s", tp->name, addr->address, | |
2798 | expand_string_message); | |
2799 | batch_count = tp->batch_max; | |
2800 | } | |
2801 | } | |
2802 | ||
2803 | /* Until we reach the batch_max limit, pick off addresses which have the | |
2804 | same characteristics. These are: | |
2805 | ||
2806 | same transport | |
7816e254 | 2807 | not previously delivered (see comment about 50 lines above) |
059ec3d9 | 2808 | same local part if the transport's configuration contains $local_part |
f7fd3850 | 2809 | or if this is a file or pipe delivery from a redirection |
059ec3d9 PH |
2810 | same domain if the transport's configuration contains $domain |
2811 | same errors address | |
2812 | same additional headers | |
2813 | same headers to be removed | |
2814 | same uid/gid for running the transport | |
2815 | same first host if a host list is set | |
2816 | */ | |
2817 | ||
d6c82d7b | 2818 | while ((next = *anchor) && batch_count < tp->batch_max) |
059ec3d9 PH |
2819 | { |
2820 | BOOL ok = | |
d6c82d7b JH |
2821 | tp == next->transport |
2822 | && !previously_transported(next, TRUE) | |
7eb0e5d2 JH |
2823 | && testflag(addr, af_pfr) == testflag(next, af_pfr) |
2824 | && testflag(addr, af_file) == testflag(next, af_file) | |
d6c82d7b JH |
2825 | && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0) |
2826 | && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0) | |
2827 | && same_strings(next->prop.errors_address, addr->prop.errors_address) | |
2828 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
2829 | && same_strings(next->prop.remove_headers, addr->prop.remove_headers) | |
2830 | && same_ugid(tp, addr, next) | |
2831 | && ( !addr->host_list && !next->host_list | |
2832 | || addr->host_list | |
2833 | && next->host_list | |
2834 | && Ustrcmp(addr->host_list->name, next->host_list->name) == 0 | |
2835 | ); | |
059ec3d9 PH |
2836 | |
2837 | /* If the transport has a batch_id setting, batch_id will be non-NULL | |
2838 | from the expansion outside the loop. Expand for this address and compare. | |
2839 | Expansion failure makes this address ineligible for batching. */ | |
2840 | ||
d6c82d7b | 2841 | if (ok && batch_id) |
059ec3d9 PH |
2842 | { |
2843 | uschar *bid; | |
2844 | address_item *save_nextnext = next->next; | |
2845 | next->next = NULL; /* Expansion for a single address */ | |
2846 | deliver_set_expansions(next); | |
2847 | next->next = save_nextnext; | |
2848 | bid = expand_string(tp->batch_id); | |
2849 | deliver_set_expansions(NULL); | |
d6c82d7b | 2850 | if (!bid) |
059ec3d9 PH |
2851 | { |
2852 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2853 | "in %s transport (%s): %s", tp->name, next->address, | |
2854 | expand_string_message); | |
2855 | ok = FALSE; | |
2856 | } | |
2857 | else ok = (Ustrcmp(batch_id, bid) == 0); | |
2858 | } | |
2859 | ||
2860 | /* Take address into batch if OK. */ | |
2861 | ||
2862 | if (ok) | |
2863 | { | |
2864 | *anchor = next->next; /* Include the address */ | |
2865 | next->next = NULL; | |
2866 | last->next = next; | |
2867 | last = next; | |
2868 | batch_count++; | |
2869 | } | |
fa41615d | 2870 | else anchor = &next->next; /* Skip the address */ |
059ec3d9 PH |
2871 | } |
2872 | } | |
2873 | ||
2874 | /* We now have one or more addresses that can be delivered in a batch. Check | |
2875 | whether the transport is prepared to accept a message of this size. If not, | |
2876 | fail them all forthwith. If the expansion fails, or does not yield an | |
2877 | integer, defer delivery. */ | |
2878 | ||
d6c82d7b | 2879 | if (tp->message_size_limit) |
059ec3d9 PH |
2880 | { |
2881 | int rc = check_message_size(tp, addr); | |
2882 | if (rc != OK) | |
2883 | { | |
2884 | replicate_status(addr); | |
d6c82d7b | 2885 | while (addr) |
059ec3d9 PH |
2886 | { |
2887 | addr2 = addr->next; | |
ba936fb8 | 2888 | post_process_one(addr, rc, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2889 | addr = addr2; |
2890 | } | |
2891 | continue; /* With next batch of addresses */ | |
2892 | } | |
2893 | } | |
2894 | ||
2895 | /* If we are not running the queue, or if forcing, all deliveries will be | |
2896 | attempted. Otherwise, we must respect the retry times for each address. Even | |
2897 | when not doing this, we need to set up the retry key string, and determine | |
2898 | whether a retry record exists, because after a successful delivery, a delete | |
2899 | retry item must be set up. Keep the retry database open only for the duration | |
2900 | of these checks, rather than for all local deliveries, because some local | |
2901 | deliveries (e.g. to pipes) can take a substantial time. */ | |
2902 | ||
d6c82d7b | 2903 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
059ec3d9 PH |
2904 | { |
2905 | DEBUG(D_deliver|D_retry|D_hints_lookup) | |
2906 | debug_printf("no retry data available\n"); | |
2907 | } | |
2908 | ||
2909 | addr2 = addr; | |
2910 | addr3 = NULL; | |
d6c82d7b | 2911 | while (addr2) |
059ec3d9 PH |
2912 | { |
2913 | BOOL ok = TRUE; /* to deliver this address */ | |
2914 | uschar *retry_key; | |
2915 | ||
2916 | /* Set up the retry key to include the domain or not, and change its | |
2917 | leading character from "R" to "T". Must make a copy before doing this, | |
2918 | because the old key may be pointed to from a "delete" retry item after | |
2919 | a routing delay. */ | |
2920 | ||
2921 | retry_key = string_copy( | |
d6c82d7b | 2922 | tp->retry_use_local_part ? addr2->address_retry_key : |
059ec3d9 PH |
2923 | addr2->domain_retry_key); |
2924 | *retry_key = 'T'; | |
2925 | ||
2926 | /* Inspect the retry data. If there is no hints file, delivery happens. */ | |
2927 | ||
d6c82d7b | 2928 | if (dbm_file) |
059ec3d9 PH |
2929 | { |
2930 | dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key); | |
2931 | ||
2932 | /* If there is no retry record, delivery happens. If there is, | |
2933 | remember it exists so it can be deleted after a successful delivery. */ | |
2934 | ||
d6c82d7b | 2935 | if (retry_record) |
059ec3d9 PH |
2936 | { |
2937 | setflag(addr2, af_lt_retry_exists); | |
2938 | ||
2939 | /* A retry record exists for this address. If queue running and not | |
2940 | forcing, inspect its contents. If the record is too old, or if its | |
2941 | retry time has come, or if it has passed its cutoff time, delivery | |
2942 | will go ahead. */ | |
2943 | ||
2944 | DEBUG(D_retry) | |
2945 | { | |
ea49d0e1 PH |
2946 | debug_printf("retry record exists: age=%s ", |
2947 | readconf_printtime(now - retry_record->time_stamp)); | |
2948 | debug_printf("(max %s)\n", readconf_printtime(retry_data_expire)); | |
2949 | debug_printf(" time to retry = %s expired = %d\n", | |
2950 | readconf_printtime(retry_record->next_try - now), | |
2951 | retry_record->expired); | |
059ec3d9 PH |
2952 | } |
2953 | ||
8768d548 | 2954 | if (f.queue_running && !f.deliver_force) |
059ec3d9 | 2955 | { |
d6c82d7b JH |
2956 | ok = (now - retry_record->time_stamp > retry_data_expire) |
2957 | || (now >= retry_record->next_try) | |
2958 | || retry_record->expired; | |
059ec3d9 PH |
2959 | |
2960 | /* If we haven't reached the retry time, there is one more check | |
1ddeb334 | 2961 | to do, which is for the ultimate address timeout. */ |
059ec3d9 PH |
2962 | |
2963 | if (!ok) | |
ba9af0af TF |
2964 | ok = retry_ultimate_address_timeout(retry_key, addr2->domain, |
2965 | retry_record, now); | |
059ec3d9 PH |
2966 | } |
2967 | } | |
2968 | else DEBUG(D_retry) debug_printf("no retry record exists\n"); | |
2969 | } | |
2970 | ||
2971 | /* This address is to be delivered. Leave it on the chain. */ | |
2972 | ||
2973 | if (ok) | |
2974 | { | |
2975 | addr3 = addr2; | |
2976 | addr2 = addr2->next; | |
2977 | } | |
2978 | ||
2979 | /* This address is to be deferred. Take it out of the chain, and | |
2980 | post-process it as complete. Must take it out of the chain first, | |
2981 | because post processing puts it on another chain. */ | |
2982 | ||
2983 | else | |
2984 | { | |
2985 | address_item *this = addr2; | |
2986 | this->message = US"Retry time not yet reached"; | |
2987 | this->basic_errno = ERRNO_LRETRY; | |
d6c82d7b JH |
2988 | addr2 = addr3 ? (addr3->next = addr2->next) |
2989 | : (addr = addr2->next); | |
ba936fb8 | 2990 | post_process_one(this, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2991 | } |
2992 | } | |
2993 | ||
d6c82d7b | 2994 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
2995 | |
2996 | /* If there are no addresses left on the chain, they all deferred. Loop | |
2997 | for the next set of addresses. */ | |
2998 | ||
d6c82d7b | 2999 | if (!addr) continue; |
059ec3d9 | 3000 | |
fa41615d JH |
3001 | /* If the transport is limited for parallellism, enforce that here. |
3002 | We use a hints DB entry, incremented here and decremented after | |
3003 | the transport (and any shadow transport) completes. */ | |
3004 | ||
3070ceee | 3005 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
fa41615d | 3006 | { |
fa41615d JH |
3007 | if (expand_string_message) |
3008 | { | |
3009 | logflags |= LOG_PANIC; | |
3070ceee JH |
3010 | do |
3011 | { | |
3012 | addr = addr->next; | |
ba936fb8 | 3013 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
3070ceee | 3014 | } while ((addr = addr2)); |
fa41615d | 3015 | } |
3070ceee | 3016 | continue; /* Loop for the next set of addresses. */ |
fa41615d JH |
3017 | } |
3018 | ||
3019 | ||
059ec3d9 PH |
3020 | /* So, finally, we do have some addresses that can be passed to the |
3021 | transport. Before doing so, set up variables that are relevant to a | |
3022 | single delivery. */ | |
3023 | ||
3024 | deliver_set_expansions(addr); | |
32dfdf8b JH |
3025 | |
3026 | gettimeofday(&delivery_start, NULL); | |
059ec3d9 | 3027 | deliver_local(addr, FALSE); |
32dfdf8b | 3028 | timesince(&deliver_time, &delivery_start); |
059ec3d9 PH |
3029 | |
3030 | /* If a shadow transport (which must perforce be another local transport), is | |
3031 | defined, and its condition is met, we must pass the message to the shadow | |
3032 | too, but only those addresses that succeeded. We do this by making a new | |
3033 | chain of addresses - also to keep the original chain uncontaminated. We must | |
3034 | use a chain rather than doing it one by one, because the shadow transport may | |
3035 | batch. | |
3036 | ||
3037 | NOTE: if the condition fails because of a lookup defer, there is nothing we | |
3038 | can do! */ | |
3039 | ||
d6c82d7b JH |
3040 | if ( tp->shadow |
3041 | && ( !tp->shadow_condition | |
3042 | || expand_check_condition(tp->shadow_condition, tp->name, US"transport") | |
3043 | ) ) | |
059ec3d9 PH |
3044 | { |
3045 | transport_instance *stp; | |
3046 | address_item *shadow_addr = NULL; | |
3047 | address_item **last = &shadow_addr; | |
3048 | ||
d6c82d7b | 3049 | for (stp = transports; stp; stp = stp->next) |
059ec3d9 PH |
3050 | if (Ustrcmp(stp->name, tp->shadow) == 0) break; |
3051 | ||
d6c82d7b | 3052 | if (!stp) |
059ec3d9 PH |
3053 | log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ", |
3054 | tp->shadow); | |
3055 | ||
3056 | /* Pick off the addresses that have succeeded, and make clones. Put into | |
3057 | the shadow_message field a pointer to the shadow_message field of the real | |
3058 | address. */ | |
3059 | ||
d6c82d7b JH |
3060 | else for (addr2 = addr; addr2; addr2 = addr2->next) |
3061 | if (addr2->transport_return == OK) | |
3062 | { | |
3063 | addr3 = store_get(sizeof(address_item)); | |
3064 | *addr3 = *addr2; | |
3065 | addr3->next = NULL; | |
82f90600 | 3066 | addr3->shadow_message = US &addr2->shadow_message; |
d6c82d7b JH |
3067 | addr3->transport = stp; |
3068 | addr3->transport_return = DEFER; | |
3069 | addr3->return_filename = NULL; | |
3070 | addr3->return_file = -1; | |
3071 | *last = addr3; | |
82f90600 | 3072 | last = &addr3->next; |
d6c82d7b | 3073 | } |
059ec3d9 PH |
3074 | |
3075 | /* If we found any addresses to shadow, run the delivery, and stick any | |
3076 | message back into the shadow_message field in the original. */ | |
3077 | ||
d6c82d7b | 3078 | if (shadow_addr) |
059ec3d9 PH |
3079 | { |
3080 | int save_count = transport_count; | |
3081 | ||
3082 | DEBUG(D_deliver|D_transport) | |
3083 | debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3084 | deliver_local(shadow_addr, TRUE); | |
3085 | ||
d6c82d7b | 3086 | for(; shadow_addr; shadow_addr = shadow_addr->next) |
059ec3d9 PH |
3087 | { |
3088 | int sresult = shadow_addr->transport_return; | |
d6c82d7b JH |
3089 | *(uschar **)shadow_addr->shadow_message = |
3090 | sresult == OK | |
3091 | ? string_sprintf(" ST=%s", stp->name) | |
3092 | : string_sprintf(" ST=%s (%s%s%s)", stp->name, | |
3093 | shadow_addr->basic_errno <= 0 | |
3094 | ? US"" | |
3095 | : US strerror(shadow_addr->basic_errno), | |
3096 | shadow_addr->basic_errno <= 0 || !shadow_addr->message | |
3097 | ? US"" | |
3098 | : US": ", | |
3099 | shadow_addr->message | |
3100 | ? shadow_addr->message | |
3101 | : shadow_addr->basic_errno <= 0 | |
3102 | ? US"unknown error" | |
3103 | : US""); | |
059ec3d9 PH |
3104 | |
3105 | DEBUG(D_deliver|D_transport) | |
3106 | debug_printf("%s shadow transport returned %s for %s\n", | |
aeb65e91 | 3107 | stp->name, rc_to_string(sresult), shadow_addr->address); |
059ec3d9 PH |
3108 | } |
3109 | ||
3110 | DEBUG(D_deliver|D_transport) | |
3111 | debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3112 | ||
3113 | transport_count = save_count; /* Restore original transport count */ | |
3114 | } | |
3115 | } | |
3116 | ||
3117 | /* Cancel the expansions that were set up for the delivery. */ | |
3118 | ||
3119 | deliver_set_expansions(NULL); | |
3120 | ||
fa41615d JH |
3121 | /* If the transport was parallelism-limited, decrement the hints DB record. */ |
3122 | ||
3123 | if (serialize_key) enq_end(serialize_key); | |
3124 | ||
059ec3d9 PH |
3125 | /* Now we can process the results of the real transport. We must take each |
3126 | address off the chain first, because post_process_one() puts it on another | |
3127 | chain. */ | |
3128 | ||
d6c82d7b | 3129 | for (addr2 = addr; addr2; addr2 = nextaddr) |
059ec3d9 PH |
3130 | { |
3131 | int result = addr2->transport_return; | |
3132 | nextaddr = addr2->next; | |
3133 | ||
3134 | DEBUG(D_deliver|D_transport) | |
3135 | debug_printf("%s transport returned %s for %s\n", | |
aeb65e91 | 3136 | tp->name, rc_to_string(result), addr2->address); |
059ec3d9 PH |
3137 | |
3138 | /* If there is a retry_record, or if delivery is deferred, build a retry | |
3139 | item for setting a new retry time or deleting the old retry record from | |
3140 | the database. These items are handled all together after all addresses | |
3141 | have been handled (so the database is open just for a short time for | |
3142 | updating). */ | |
3143 | ||
3144 | if (result == DEFER || testflag(addr2, af_lt_retry_exists)) | |
3145 | { | |
d6c82d7b JH |
3146 | int flags = result == DEFER ? 0 : rf_delete; |
3147 | uschar *retry_key = string_copy(tp->retry_use_local_part | |
3148 | ? addr2->address_retry_key : addr2->domain_retry_key); | |
059ec3d9 PH |
3149 | *retry_key = 'T'; |
3150 | retry_add_item(addr2, retry_key, flags); | |
3151 | } | |
3152 | ||
3153 | /* Done with this address */ | |
3154 | ||
32dfdf8b JH |
3155 | if (result == OK) |
3156 | { | |
3157 | addr2->more_errno = deliver_time.tv_sec; | |
3158 | addr2->delivery_usec = deliver_time.tv_usec; | |
3159 | } | |
ba936fb8 | 3160 | post_process_one(addr2, result, logflags, EXIM_DTYPE_TRANSPORT, logchar); |
059ec3d9 PH |
3161 | |
3162 | /* If a pipe delivery generated text to be sent back, the result may be | |
3163 | changed to FAIL, and we must copy this for subsequent addresses in the | |
3164 | batch. */ | |
3165 | ||
3166 | if (addr2->transport_return != result) | |
3167 | { | |
d6c82d7b | 3168 | for (addr3 = nextaddr; addr3; addr3 = addr3->next) |
059ec3d9 PH |
3169 | { |
3170 | addr3->transport_return = addr2->transport_return; | |
3171 | addr3->basic_errno = addr2->basic_errno; | |
3172 | addr3->message = addr2->message; | |
3173 | } | |
3174 | result = addr2->transport_return; | |
3175 | } | |
3176 | ||
3177 | /* Whether or not the result was changed to FAIL, we need to copy the | |
3178 | return_file value from the first address into all the addresses of the | |
3179 | batch, so they are all listed in the error message. */ | |
3180 | ||
3181 | addr2->return_file = addr->return_file; | |
3182 | ||
3183 | /* Change log character for recording successful deliveries. */ | |
3184 | ||
3185 | if (result == OK) logchar = '-'; | |
3186 | } | |
3187 | } /* Loop back for next batch of addresses */ | |
3188 | } | |
3189 | ||
3190 | ||
3191 | ||
3192 | ||
3193 | /************************************************* | |
3194 | * Sort remote deliveries * | |
3195 | *************************************************/ | |
3196 | ||
3197 | /* This function is called if remote_sort_domains is set. It arranges that the | |
3198 | chain of addresses for remote deliveries is ordered according to the strings | |
3199 | specified. Try to make this shuffling reasonably efficient by handling | |
3200 | sequences of addresses rather than just single ones. | |
3201 | ||
3202 | Arguments: None | |
3203 | Returns: Nothing | |
3204 | */ | |
3205 | ||
3206 | static void | |
3207 | sort_remote_deliveries(void) | |
3208 | { | |
3209 | int sep = 0; | |
3210 | address_item **aptr = &addr_remote; | |
55414b25 | 3211 | const uschar *listptr = remote_sort_domains; |
059ec3d9 PH |
3212 | uschar *pattern; |
3213 | uschar patbuf[256]; | |
3214 | ||
d6c82d7b JH |
3215 | while ( *aptr |
3216 | && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf))) | |
3217 | ) | |
059ec3d9 PH |
3218 | { |
3219 | address_item *moved = NULL; | |
3220 | address_item **bptr = &moved; | |
3221 | ||
d6c82d7b | 3222 | while (*aptr) |
059ec3d9 PH |
3223 | { |
3224 | address_item **next; | |
3225 | deliver_domain = (*aptr)->domain; /* set $domain */ | |
55414b25 | 3226 | if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
059ec3d9 PH |
3227 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK) |
3228 | { | |
d6c82d7b | 3229 | aptr = &(*aptr)->next; |
059ec3d9 PH |
3230 | continue; |
3231 | } | |
3232 | ||
d6c82d7b JH |
3233 | next = &(*aptr)->next; |
3234 | while ( *next | |
3235 | && (deliver_domain = (*next)->domain, /* Set $domain */ | |
55414b25 | 3236 | match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
d6c82d7b JH |
3237 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK |
3238 | ) | |
3239 | next = &(*next)->next; | |
059ec3d9 PH |
3240 | |
3241 | /* If the batch of non-matchers is at the end, add on any that were | |
3242 | extracted further up the chain, and end this iteration. Otherwise, | |
3243 | extract them from the chain and hang on the moved chain. */ | |
3244 | ||
d6c82d7b | 3245 | if (!*next) |
059ec3d9 PH |
3246 | { |
3247 | *next = moved; | |
3248 | break; | |
3249 | } | |
3250 | ||
3251 | *bptr = *aptr; | |
3252 | *aptr = *next; | |
3253 | *next = NULL; | |
3254 | bptr = next; | |
d6c82d7b | 3255 | aptr = &(*aptr)->next; |
059ec3d9 PH |
3256 | } |
3257 | ||
3258 | /* If the loop ended because the final address matched, *aptr will | |
3259 | be NULL. Add on to the end any extracted non-matching addresses. If | |
3260 | *aptr is not NULL, the loop ended via "break" when *next is null, that | |
3261 | is, there was a string of non-matching addresses at the end. In this | |
3262 | case the extracted addresses have already been added on the end. */ | |
3263 | ||
d6c82d7b | 3264 | if (!*aptr) *aptr = moved; |
059ec3d9 PH |
3265 | } |
3266 | ||
3267 | DEBUG(D_deliver) | |
3268 | { | |
059ec3d9 | 3269 | debug_printf("remote addresses after sorting:\n"); |
d7978c0f | 3270 | for (address_item * addr = addr_remote; addr; addr = addr->next) |
059ec3d9 PH |
3271 | debug_printf(" %s\n", addr->address); |
3272 | } | |
3273 | } | |
3274 | ||
3275 | ||
3276 | ||
3277 | /************************************************* | |
3278 | * Read from pipe for remote delivery subprocess * | |
3279 | *************************************************/ | |
3280 | ||
3281 | /* This function is called when the subprocess is complete, but can also be | |
3282 | called before it is complete, in order to empty a pipe that is full (to prevent | |
3283 | deadlock). It must therefore keep track of its progress in the parlist data | |
3284 | block. | |
3285 | ||
3286 | We read the pipe to get the delivery status codes and a possible error message | |
3287 | for each address, optionally preceded by unusability data for the hosts and | |
3288 | also by optional retry data. | |
3289 | ||
3290 | Read in large chunks into the big buffer and then scan through, interpreting | |
3291 | the data therein. In most cases, only a single read will be necessary. No | |
1c5466b9 PH |
3292 | individual item will ever be anywhere near 2500 bytes in length, so by ensuring |
3293 | that we read the next chunk when there is less than 2500 bytes left in the | |
3294 | non-final chunk, we can assume each item is complete in the buffer before | |
3295 | handling it. Each item is written using a single write(), which is atomic for | |
3296 | small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and | |
3297 | often bigger) so even if we are reading while the subprocess is still going, we | |
3298 | should never have only a partial item in the buffer. | |
059ec3d9 | 3299 | |
0768462d JH |
3300 | hs12: This assumption is not true anymore, since we get quite large items (certificate |
3301 | information and such). | |
2cee425a | 3302 | |
059ec3d9 PH |
3303 | Argument: |
3304 | poffset the offset of the parlist item | |
3305 | eop TRUE if the process has completed | |
3306 | ||
3307 | Returns: TRUE if the terminating 'Z' item has been read, | |
3308 | or there has been a disaster (i.e. no more data needed); | |
3309 | FALSE otherwise | |
3310 | */ | |
3311 | ||
3312 | static BOOL | |
3313 | par_read_pipe(int poffset, BOOL eop) | |
3314 | { | |
3315 | host_item *h; | |
3316 | pardata *p = parlist + poffset; | |
3317 | address_item *addrlist = p->addrlist; | |
3318 | address_item *addr = p->addr; | |
3319 | pid_t pid = p->pid; | |
3320 | int fd = p->fd; | |
2cee425a | 3321 | |
059ec3d9 PH |
3322 | uschar *msg = p->msg; |
3323 | BOOL done = p->done; | |
059ec3d9 PH |
3324 | |
3325 | /* Loop through all items, reading from the pipe when necessary. The pipe | |
2cee425a HSHR |
3326 | used to be non-blocking. But I do not see a reason for using non-blocking I/O |
3327 | here, as the preceding select() tells us, if data is available for reading. | |
3328 | ||
3329 | A read() on a "selected" handle should never block, but(!) it may return | |
3330 | less data then we expected. (The buffer size we pass to read() shouldn't be | |
3331 | understood as a "request", but as a "limit".) | |
3332 | ||
3333 | Each separate item is written to the pipe in a timely manner. But, especially for | |
3334 | larger items, the read(2) may already return partial data from the write(2). | |
3335 | ||
3336 | The write is atomic mostly (depending on the amount written), but atomic does | |
3337 | not imply "all or noting", it just is "not intermixed" with other writes on the | |
3338 | same channel (pipe). | |
6c454556 HSHR |
3339 | |
3340 | */ | |
059ec3d9 PH |
3341 | |
3342 | DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n", | |
2cee425a | 3343 | (int)p->pid, eop? "ended" : "not ended yet"); |
059ec3d9 PH |
3344 | |
3345 | while (!done) | |
3346 | { | |
3347 | retry_item *r, **rp; | |
2cee425a HSHR |
3348 | uschar pipeheader[PIPE_HEADER_SIZE+1]; |
3349 | uschar *id = &pipeheader[0]; | |
3350 | uschar *subid = &pipeheader[1]; | |
3351 | uschar *ptr = big_buffer; | |
3352 | size_t required = PIPE_HEADER_SIZE; /* first the pipehaeder, later the data */ | |
3353 | ssize_t got; | |
3354 | ||
7845dbb3 | 3355 | DEBUG(D_deliver) debug_printf( |
0d68983b | 3356 | "expect %lu bytes (pipeheader) from tpt process %d\n", (u_long)required, pid); |
2cee425a HSHR |
3357 | |
3358 | /* We require(!) all the PIPE_HEADER_SIZE bytes here, as we know, | |
3359 | they're written in a timely manner, so waiting for the write shouldn't hurt a lot. | |
3360 | If we get less, we can assume the subprocess do be done and do not expect any further | |
3361 | information from it. */ | |
7845dbb3 | 3362 | |
ee250936 | 3363 | if ((got = readn(fd, pipeheader, required)) != required) |
059ec3d9 | 3364 | { |
bb07bcd3 JH |
3365 | msg = string_sprintf("got " SSIZE_T_FMT " of %d bytes (pipeheader) " |
3366 | "from transport process %d for transport %s", | |
3367 | got, PIPE_HEADER_SIZE, pid, addr->transport->driver_name); | |
3368 | done = TRUE; | |
3369 | break; | |
059ec3d9 PH |
3370 | } |
3371 | ||
2cee425a HSHR |
3372 | pipeheader[PIPE_HEADER_SIZE] = '\0'; |
3373 | DEBUG(D_deliver) | |
7845dbb3 JH |
3374 | debug_printf("got %ld bytes (pipeheader) from transport process %d\n", |
3375 | (long) got, pid); | |
059ec3d9 | 3376 | |
2cee425a HSHR |
3377 | { |
3378 | /* If we can't decode the pipeheader, the subprocess seems to have a | |
3379 | problem, we do not expect any furher information from it. */ | |
3380 | char *endc; | |
7845dbb3 | 3381 | required = Ustrtol(pipeheader+2, &endc, 10); |
bd21a787 WB |
3382 | if (*endc) |
3383 | { | |
2cee425a HSHR |
3384 | msg = string_sprintf("failed to read pipe " |
3385 | "from transport process %d for transport %s: error decoding size from header", | |
3386 | pid, addr->transport->driver_name); | |
bd21a787 WB |
3387 | done = TRUE; |
3388 | break; | |
3389 | } | |
2cee425a | 3390 | } |
bd21a787 WB |
3391 | |
3392 | DEBUG(D_deliver) | |
7845dbb3 | 3393 | debug_printf("expect %lu bytes (pipedata) from transport process %d\n", |
0d68983b | 3394 | (u_long)required, pid); |
2c0f3ea1 | 3395 | |
2cee425a HSHR |
3396 | /* Same as above, the transport process will write the bytes announced |
3397 | in a timely manner, so we can just wait for the bytes, getting less than expected | |
3398 | is considered a problem of the subprocess, we do not expect anything else from it. */ | |
ee250936 | 3399 | if ((got = readn(fd, big_buffer, required)) != required) |
8fa0a4d4 | 3400 | { |
bb07bcd3 JH |
3401 | msg = string_sprintf("got only " SSIZE_T_FMT " of " SIZE_T_FMT |
3402 | " bytes (pipedata) from transport process %d for transport %s", | |
3403 | got, required, pid, addr->transport->driver_name); | |
3404 | done = TRUE; | |
3405 | break; | |
8fa0a4d4 | 3406 | } |
bd21a787 | 3407 | |
059ec3d9 PH |
3408 | /* Handle each possible type of item, assuming the complete item is |
3409 | available in store. */ | |
3410 | ||
2cee425a | 3411 | switch (*id) |
059ec3d9 PH |
3412 | { |
3413 | /* Host items exist only if any hosts were marked unusable. Match | |
3414 | up by checking the IP address. */ | |
3415 | ||
3416 | case 'H': | |
57cc2785 JH |
3417 | for (h = addrlist->host_list; h; h = h->next) |
3418 | { | |
3419 | if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue; | |
3420 | h->status = ptr[0]; | |
3421 | h->why = ptr[1]; | |
3422 | } | |
3423 | ptr += 2; | |
3424 | while (*ptr++); | |
3425 | break; | |
059ec3d9 PH |
3426 | |
3427 | /* Retry items are sent in a preceding R item for each address. This is | |
3428 | kept separate to keep each message short enough to guarantee it won't | |
3429 | be split in the pipe. Hopefully, in the majority of cases, there won't in | |
3430 | fact be any retry items at all. | |
3431 | ||
3432 | The complete set of retry items might include an item to delete a | |
3433 | routing retry if there was a previous routing delay. However, routing | |
3434 | retries are also used when a remote transport identifies an address error. | |
3435 | In that case, there may also be an "add" item for the same key. Arrange | |
3436 | that a "delete" item is dropped in favour of an "add" item. */ | |
3437 | ||
3438 | case 'R': | |
57cc2785 | 3439 | if (!addr) goto ADDR_MISMATCH; |
059ec3d9 | 3440 | |
57cc2785 JH |
3441 | DEBUG(D_deliver|D_retry) |
3442 | debug_printf("reading retry information for %s from subprocess\n", | |
3443 | ptr+1); | |
059ec3d9 | 3444 | |
57cc2785 | 3445 | /* Cut out any "delete" items on the list. */ |
059ec3d9 | 3446 | |
57cc2785 JH |
3447 | for (rp = &addr->retries; (r = *rp); rp = &r->next) |
3448 | if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */ | |
3449 | { | |
3450 | if (!(r->flags & rf_delete)) break; /* It was not "delete" */ | |
3451 | *rp = r->next; /* Excise a delete item */ | |
3452 | DEBUG(D_deliver|D_retry) | |
3453 | debug_printf(" existing delete item dropped\n"); | |
3454 | } | |
059ec3d9 | 3455 | |
57cc2785 JH |
3456 | /* We want to add a delete item only if there is no non-delete item; |
3457 | however we still have to step ptr through the data. */ | |
059ec3d9 | 3458 | |
57cc2785 JH |
3459 | if (!r || !(*ptr & rf_delete)) |
3460 | { | |
3461 | r = store_get(sizeof(retry_item)); | |
3462 | r->next = addr->retries; | |
3463 | addr->retries = r; | |
3464 | r->flags = *ptr++; | |
3465 | r->key = string_copy(ptr); | |
3466 | while (*ptr++); | |
32dfdf8b | 3467 | memcpy(&r->basic_errno, ptr, sizeof(r->basic_errno)); |
57cc2785 | 3468 | ptr += sizeof(r->basic_errno); |
32dfdf8b | 3469 | memcpy(&r->more_errno, ptr, sizeof(r->more_errno)); |
57cc2785 JH |
3470 | ptr += sizeof(r->more_errno); |
3471 | r->message = *ptr ? string_copy(ptr) : NULL; | |
3472 | DEBUG(D_deliver|D_retry) debug_printf(" added %s item\n", | |
3473 | r->flags & rf_delete ? "delete" : "retry"); | |
3474 | } | |
059ec3d9 | 3475 | |
57cc2785 JH |
3476 | else |
3477 | { | |
3478 | DEBUG(D_deliver|D_retry) | |
3479 | debug_printf(" delete item not added: non-delete item exists\n"); | |
3480 | ptr++; | |
3481 | while(*ptr++); | |
3482 | ptr += sizeof(r->basic_errno) + sizeof(r->more_errno); | |
3483 | } | |
059ec3d9 | 3484 | |
57cc2785 JH |
3485 | while(*ptr++); |
3486 | break; | |
059ec3d9 PH |
3487 | |
3488 | /* Put the amount of data written into the parlist block */ | |
3489 | ||
3490 | case 'S': | |
57cc2785 JH |
3491 | memcpy(&(p->transport_count), ptr, sizeof(transport_count)); |
3492 | ptr += sizeof(transport_count); | |
3493 | break; | |
059ec3d9 PH |
3494 | |
3495 | /* Address items are in the order of items on the address chain. We | |
3496 | remember the current address value in case this function is called | |
3497 | several times to empty the pipe in stages. Information about delivery | |
3498 | over TLS is sent in a preceding X item for each address. We don't put | |
3499 | it in with the other info, in order to keep each message short enough to | |
3500 | guarantee it won't be split in the pipe. */ | |
3501 | ||
a7538db1 | 3502 | #ifdef SUPPORT_TLS |
059ec3d9 | 3503 | case 'X': |
57cc2785 | 3504 | if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */ |
2cee425a | 3505 | switch (*subid) |
57cc2785 JH |
3506 | { |
3507 | case '1': | |
3508 | addr->cipher = NULL; | |
3509 | addr->peerdn = NULL; | |
9d1c15ef | 3510 | |
57cc2785 JH |
3511 | if (*ptr) |
3512 | addr->cipher = string_copy(ptr); | |
3513 | while (*ptr++); | |
3514 | if (*ptr) | |
3515 | addr->peerdn = string_copy(ptr); | |
3516 | break; | |
3517 | ||
3518 | case '2': | |
3519 | if (*ptr) | |
3520 | (void) tls_import_cert(ptr, &addr->peercert); | |
3521 | else | |
3522 | addr->peercert = NULL; | |
3523 | break; | |
3524 | ||
3525 | case '3': | |
3526 | if (*ptr) | |
3527 | (void) tls_import_cert(ptr, &addr->ourcert); | |
3528 | else | |
3529 | addr->ourcert = NULL; | |
3530 | break; | |
018058b2 | 3531 | |
a7538db1 | 3532 | # ifndef DISABLE_OCSP |
57cc2785 JH |
3533 | case '4': |
3534 | addr->ocsp = *ptr ? *ptr - '0' : OCSP_NOT_REQ; | |
3535 | break; | |
a7538db1 | 3536 | # endif |
57cc2785 JH |
3537 | } |
3538 | while (*ptr++); | |
3539 | break; | |
a7538db1 | 3540 | #endif /*SUPPORT_TLS*/ |
059ec3d9 | 3541 | |
6f123593 | 3542 | case 'C': /* client authenticator information */ |
2cee425a | 3543 | switch (*subid) |
57cc2785 JH |
3544 | { |
3545 | case '1': addr->authenticator = *ptr ? string_copy(ptr) : NULL; break; | |
3546 | case '2': addr->auth_id = *ptr ? string_copy(ptr) : NULL; break; | |
3547 | case '3': addr->auth_sndr = *ptr ? string_copy(ptr) : NULL; break; | |
3548 | } | |
3549 | while (*ptr++); | |
3550 | break; | |
6f123593 | 3551 | |
8ccd00b1 | 3552 | #ifndef DISABLE_PRDR |
fd98a5c6 | 3553 | case 'P': |
7eb0e5d2 | 3554 | setflag(addr, af_prdr_used); |
57cc2785 | 3555 | break; |
fd98a5c6 JH |
3556 | #endif |
3557 | ||
7c576fca JH |
3558 | case 'L': |
3559 | switch (*subid) | |
3560 | { | |
ee8b8090 JH |
3561 | #ifdef EXPERIMENTAL_PIPE_CONNECT |
3562 | case 2: setflag(addr, af_early_pipe); /*FALLTHROUGH*/ | |
3563 | #endif | |
7c576fca JH |
3564 | case 1: setflag(addr, af_pipelining); break; |
3565 | } | |
3566 | break; | |
3567 | ||
e0cc6cda | 3568 | case 'K': |
7eb0e5d2 | 3569 | setflag(addr, af_chunking_used); |
57cc2785 | 3570 | break; |
e0cc6cda | 3571 | |
a2673768 | 3572 | case 'T': |
1ccd5f67 JH |
3573 | setflag(addr, af_tcp_fastopen_conn); |
3574 | if (*subid > '0') setflag(addr, af_tcp_fastopen); | |
ee8b8090 | 3575 | if (*subid > '1') setflag(addr, af_tcp_fastopen_data); |
a2673768 JH |
3576 | break; |
3577 | ||
6c1c3d1d | 3578 | case 'D': |
57cc2785 JH |
3579 | if (!addr) goto ADDR_MISMATCH; |
3580 | memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware)); | |
3581 | ptr += sizeof(addr->dsn_aware); | |
3582 | DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware); | |
059ec3d9 | 3583 | break; |
059ec3d9 | 3584 | |
57cc2785 JH |
3585 | case 'A': |
3586 | if (!addr) | |
3587 | { | |
3588 | ADDR_MISMATCH: | |
3589 | msg = string_sprintf("address count mismatch for data read from pipe " | |
3590 | "for transport process %d for transport %s", pid, | |
3591 | addrlist->transport->driver_name); | |
3592 | done = TRUE; | |
e6d2a989 | 3593 | break; |
57cc2785 | 3594 | } |
e6d2a989 | 3595 | |
2cee425a | 3596 | switch (*subid) |
57cc2785 JH |
3597 | { |
3598 | #ifdef SUPPORT_SOCKS | |
3599 | case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/ | |
3600 | proxy_session = TRUE; /*XXX should this be cleared somewhere? */ | |
3601 | if (*ptr == 0) | |
3602 | ptr++; | |
3603 | else | |
3604 | { | |
3605 | proxy_local_address = string_copy(ptr); | |
3606 | while(*ptr++); | |
3607 | memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port)); | |
3608 | ptr += sizeof(proxy_local_port); | |
3609 | } | |
3610 | break; | |
3611 | #endif | |
059ec3d9 | 3612 | |
57cc2785 JH |
3613 | #ifdef EXPERIMENTAL_DSN_INFO |
3614 | case '1': /* must arrive before A0, and applies to that addr */ | |
3615 | /* Two strings: smtp_greeting and helo_response */ | |
3616 | addr->smtp_greeting = string_copy(ptr); | |
3617 | while(*ptr++); | |
3618 | addr->helo_response = string_copy(ptr); | |
3619 | while(*ptr++); | |
3620 | break; | |
3621 | #endif | |
3622 | ||
3623 | case '0': | |
3624 | DEBUG(D_deliver) debug_printf("A0 %s tret %d\n", addr->address, *ptr); | |
3625 | addr->transport_return = *ptr++; | |
3626 | addr->special_action = *ptr++; | |
32dfdf8b | 3627 | memcpy(&addr->basic_errno, ptr, sizeof(addr->basic_errno)); |
57cc2785 | 3628 | ptr += sizeof(addr->basic_errno); |
32dfdf8b | 3629 | memcpy(&addr->more_errno, ptr, sizeof(addr->more_errno)); |
57cc2785 | 3630 | ptr += sizeof(addr->more_errno); |
32dfdf8b JH |
3631 | memcpy(&addr->delivery_usec, ptr, sizeof(addr->delivery_usec)); |
3632 | ptr += sizeof(addr->delivery_usec); | |
3633 | memcpy(&addr->flags, ptr, sizeof(addr->flags)); | |
57cc2785 JH |
3634 | ptr += sizeof(addr->flags); |
3635 | addr->message = *ptr ? string_copy(ptr) : NULL; | |
3636 | while(*ptr++); | |
3637 | addr->user_message = *ptr ? string_copy(ptr) : NULL; | |
3638 | while(*ptr++); | |
059ec3d9 | 3639 | |
57cc2785 | 3640 | /* Always two strings for host information, followed by the port number and DNSSEC mark */ |
895fbaf2 | 3641 | |
57cc2785 JH |
3642 | if (*ptr) |
3643 | { | |
3644 | h = store_get(sizeof(host_item)); | |
3645 | h->name = string_copy(ptr); | |
3646 | while (*ptr++); | |
3647 | h->address = string_copy(ptr); | |
3648 | while(*ptr++); | |
3649 | memcpy(&h->port, ptr, sizeof(h->port)); | |
3650 | ptr += sizeof(h->port); | |
3651 | h->dnssec = *ptr == '2' ? DS_YES | |
3652 | : *ptr == '1' ? DS_NO | |
3653 | : DS_UNK; | |
3654 | ptr++; | |
3655 | addr->host_used = h; | |
3656 | } | |
3657 | else ptr++; | |
895fbaf2 | 3658 | |
57cc2785 | 3659 | /* Finished with this address */ |
895fbaf2 | 3660 | |
57cc2785 JH |
3661 | addr = addr->next; |
3662 | break; | |
3663 | } | |
3664 | break; | |
059ec3d9 | 3665 | |
aeaf5db3 JH |
3666 | /* Local interface address/port */ |
3667 | case 'I': | |
57cc2785 JH |
3668 | if (*ptr) sending_ip_address = string_copy(ptr); |
3669 | while (*ptr++) ; | |
3670 | if (*ptr) sending_port = atoi(CS ptr); | |
3671 | while (*ptr++) ; | |
3672 | break; | |
aeaf5db3 | 3673 | |
059ec3d9 PH |
3674 | /* Z marks the logical end of the data. It is followed by '0' if |
3675 | continue_transport was NULL at the end of transporting, otherwise '1'. | |
3676 | We need to know when it becomes NULL during a delivery down a passed SMTP | |
3677 | channel so that we don't try to pass anything more down it. Of course, for | |
3678 | most normal messages it will remain NULL all the time. */ | |
3679 | ||
3680 | case 'Z': | |
57cc2785 JH |
3681 | if (*ptr == '0') |
3682 | { | |
3683 | continue_transport = NULL; | |
3684 | continue_hostname = NULL; | |
3685 | } | |
3686 | done = TRUE; | |
3687 | DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr); | |
3688 | break; | |
059ec3d9 PH |
3689 | |
3690 | /* Anything else is a disaster. */ | |
3691 | ||
3692 | default: | |
57cc2785 JH |
3693 | msg = string_sprintf("malformed data (%d) read from pipe for transport " |
3694 | "process %d for transport %s", ptr[-1], pid, | |
3695 | addr->transport->driver_name); | |
3696 | done = TRUE; | |
3697 | break; | |
059ec3d9 PH |
3698 | } |
3699 | } | |
3700 | ||
3701 | /* The done flag is inspected externally, to determine whether or not to | |
3702 | call the function again when the process finishes. */ | |
3703 | ||
3704 | p->done = done; | |
3705 | ||
3706 | /* If the process hadn't finished, and we haven't seen the end of the data | |
2cee425a | 3707 | or if we suffered a disaster, update the rest of the state, and return FALSE to |
059ec3d9 PH |
3708 | indicate "not finished". */ |
3709 | ||
3710 | if (!eop && !done) | |
3711 | { | |
3712 | p->addr = addr; | |
3713 | p->msg = msg; | |
3714 | return FALSE; | |
3715 | } | |
3716 | ||
3717 | /* Close our end of the pipe, to prevent deadlock if the far end is still | |
3718 | pushing stuff into it. */ | |
3719 | ||
f1e894f3 | 3720 | (void)close(fd); |
059ec3d9 PH |
3721 | p->fd = -1; |
3722 | ||
3723 | /* If we have finished without error, but haven't had data for every address, | |
3724 | something is wrong. */ | |
3725 | ||
d6c82d7b | 3726 | if (!msg && addr) |
059ec3d9 PH |
3727 | msg = string_sprintf("insufficient address data read from pipe " |
3728 | "for transport process %d for transport %s", pid, | |
3729 | addr->transport->driver_name); | |
3730 | ||
3731 | /* If an error message is set, something has gone wrong in getting back | |
3732 | the delivery data. Put the message into each address and freeze it. */ | |
3733 | ||
d6c82d7b JH |
3734 | if (msg) |
3735 | for (addr = addrlist; addr; addr = addr->next) | |
059ec3d9 PH |
3736 | { |
3737 | addr->transport_return = DEFER; | |
3738 | addr->special_action = SPECIAL_FREEZE; | |
3739 | addr->message = msg; | |
2cee425a | 3740 | log_write(0, LOG_MAIN|LOG_PANIC, "Delivery status for %s: %s\n", addr->address, addr->message); |
059ec3d9 | 3741 | } |
059ec3d9 PH |
3742 | |
3743 | /* Return TRUE to indicate we have got all we need from this process, even | |
3744 | if it hasn't actually finished yet. */ | |
3745 | ||
3746 | return TRUE; | |
3747 | } | |
3748 | ||
3749 | ||
3750 | ||
3751 | /************************************************* | |
3752 | * Post-process a set of remote addresses * | |
3753 | *************************************************/ | |
3754 | ||
3755 | /* Do what has to be done immediately after a remote delivery for each set of | |
3756 | addresses, then re-write the spool if necessary. Note that post_process_one | |
3757 | puts the address on an appropriate queue; hence we must fish off the next | |
3758 | one first. This function is also called if there is a problem with setting | |
3759 | up a subprocess to do a remote delivery in parallel. In this case, the final | |
3760 | argument contains a message, and the action must be forced to DEFER. | |
3761 | ||
3762 | Argument: | |
3763 | addr pointer to chain of address items | |
3764 | logflags flags for logging | |
3765 | msg NULL for normal cases; -> error message for unexpected problems | |
3766 | fallback TRUE if processing fallback hosts | |
3767 | ||
3768 | Returns: nothing | |
3769 | */ | |
3770 | ||
3771 | static void | |
3772 | remote_post_process(address_item *addr, int logflags, uschar *msg, | |
3773 | BOOL fallback) | |
3774 | { | |
059ec3d9 PH |
3775 | /* If any host addresses were found to be unusable, add them to the unusable |
3776 | tree so that subsequent deliveries don't try them. */ | |
3777 | ||
d7978c0f | 3778 | for (host_item * h = addr->host_list; h; h = h->next) |
d6c82d7b JH |
3779 | if (h->address) |
3780 | if (h->status >= hstatus_unusable) tree_add_unusable(h); | |
059ec3d9 PH |
3781 | |
3782 | /* Now handle each address on the chain. The transport has placed '=' or '-' | |
3783 | into the special_action field for each successful delivery. */ | |
3784 | ||
d6c82d7b | 3785 | while (addr) |
059ec3d9 PH |
3786 | { |
3787 | address_item *next = addr->next; | |
3788 | ||
3789 | /* If msg == NULL (normal processing) and the result is DEFER and we are | |
3790 | processing the main hosts and there are fallback hosts available, put the | |
3791 | address on the list for fallback delivery. */ | |
3792 | ||
d6c82d7b JH |
3793 | if ( addr->transport_return == DEFER |
3794 | && addr->fallback_hosts | |
3795 | && !fallback | |
3796 | && !msg | |
3797 | ) | |
059ec3d9 PH |
3798 | { |
3799 | addr->host_list = addr->fallback_hosts; | |
3800 | addr->next = addr_fallback; | |
3801 | addr_fallback = addr; | |
3802 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address); | |
3803 | } | |
3804 | ||
3805 | /* If msg is set (=> unexpected problem), set it in the address before | |
3806 | doing the ordinary post processing. */ | |
3807 | ||
3808 | else | |
3809 | { | |
d6c82d7b | 3810 | if (msg) |
059ec3d9 PH |
3811 | { |
3812 | addr->message = msg; | |
3813 | addr->transport_return = DEFER; | |
3814 | } | |
3815 | (void)post_process_one(addr, addr->transport_return, logflags, | |
ba936fb8 | 3816 | EXIM_DTYPE_TRANSPORT, addr->special_action); |
059ec3d9 PH |
3817 | } |
3818 | ||
3819 | /* Next address */ | |
3820 | ||
3821 | addr = next; | |
3822 | } | |
3823 | ||
3824 | /* If we have just delivered down a passed SMTP channel, and that was | |
3825 | the last address, the channel will have been closed down. Now that | |
3826 | we have logged that delivery, set continue_sequence to 1 so that | |
3827 | any subsequent deliveries don't get "*" incorrectly logged. */ | |
3828 | ||
d6c82d7b | 3829 | if (!continue_transport) continue_sequence = 1; |
059ec3d9 PH |
3830 | } |
3831 | ||
3832 | ||
3833 | ||
3834 | /************************************************* | |
3835 | * Wait for one remote delivery subprocess * | |
3836 | *************************************************/ | |
3837 | ||
3838 | /* This function is called while doing remote deliveries when either the | |
3839 | maximum number of processes exist and we need one to complete so that another | |
3840 | can be created, or when waiting for the last ones to complete. It must wait for | |
3841 | the completion of one subprocess, empty the control block slot, and return a | |
3842 | pointer to the address chain. | |
3843 | ||
3844 | Arguments: none | |
3845 | Returns: pointer to the chain of addresses handled by the process; | |
3846 | NULL if no subprocess found - this is an unexpected error | |
3847 | */ | |
3848 | ||
3849 | static address_item * | |
3850 | par_wait(void) | |
3851 | { | |
3852 | int poffset, status; | |
3853 | address_item *addr, *addrlist; | |
3854 | pid_t pid; | |
3855 | ||
3856 | set_process_info("delivering %s: waiting for a remote delivery subprocess " | |
3857 | "to finish", message_id); | |
3858 | ||
3859 | /* Loop until either a subprocess completes, or there are no subprocesses in | |
3860 | existence - in which case give an error return. We cannot proceed just by | |
3861 | waiting for a completion, because a subprocess may have filled up its pipe, and | |
3862 | be waiting for it to be emptied. Therefore, if no processes have finished, we | |
3863 | wait for one of the pipes to acquire some data by calling select(), with a | |
3864 | timeout just in case. | |
3865 | ||
3866 | The simple approach is just to iterate after reading data from a ready pipe. | |
3867 | This leads to non-ideal behaviour when the subprocess has written its final Z | |
3868 | item, closed the pipe, and is in the process of exiting (the common case). A | |
3869 | call to waitpid() yields nothing completed, but select() shows the pipe ready - | |
3870 | reading it yields EOF, so you end up with busy-waiting until the subprocess has | |
3871 | actually finished. | |
3872 | ||
3873 | To avoid this, if all the data that is needed has been read from a subprocess | |
3874 | after select(), an explicit wait() for it is done. We know that all it is doing | |
3875 | is writing to the pipe and then exiting, so the wait should not be long. | |
3876 | ||
3877 | The non-blocking waitpid() is to some extent just insurance; if we could | |
3878 | reliably detect end-of-file on the pipe, we could always know when to do a | |
3879 | blocking wait() for a completed process. However, because some systems use | |
3880 | NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to | |
3881 | use code that functions without the need to recognize EOF. | |
3882 | ||
3883 | There's a double loop here just in case we end up with a process that is not in | |
3884 | the list of remote delivery processes. Something has obviously gone wrong if | |
3885 | this is the case. (For example, a process that is incorrectly left over from | |
3886 | routing or local deliveries might be found.) The damage can be minimized by | |
3887 | looping back and looking for another process. If there aren't any, the error | |
3888 | return will happen. */ | |
3889 | ||
3890 | for (;;) /* Normally we do not repeat this loop */ | |
3891 | { | |
3892 | while ((pid = waitpid(-1, &status, WNOHANG)) <= 0) | |
3893 | { | |
3894 | struct timeval tv; | |
3895 | fd_set select_pipes; | |
3896 | int maxpipe, readycount; | |
3897 | ||
3898 | /* A return value of -1 can mean several things. If errno != ECHILD, it | |
3899 | either means invalid options (which we discount), or that this process was | |
3900 | interrupted by a signal. Just loop to try the waitpid() again. | |
3901 | ||
3902 | If errno == ECHILD, waitpid() is telling us that there are no subprocesses | |
3903 | in existence. This should never happen, and is an unexpected error. | |
3904 | However, there is a nasty complication when running under Linux. If "strace | |
3905 | -f" is being used under Linux to trace this process and its children, | |
3906 | subprocesses are "stolen" from their parents and become the children of the | |
3907 | tracing process. A general wait such as the one we've just obeyed returns | |
3908 | as if there are no children while subprocesses are running. Once a | |
3909 | subprocess completes, it is restored to the parent, and waitpid(-1) finds | |
3910 | it. Thanks to Joachim Wieland for finding all this out and suggesting a | |
3911 | palliative. | |
3912 | ||
3913 | This does not happen using "truss" on Solaris, nor (I think) with other | |
3914 | tracing facilities on other OS. It seems to be specific to Linux. | |
3915 | ||
3916 | What we do to get round this is to use kill() to see if any of our | |
3917 | subprocesses are still in existence. If kill() gives an OK return, we know | |
3918 | it must be for one of our processes - it can't be for a re-use of the pid, | |
3919 | because if our process had finished, waitpid() would have found it. If any | |
3920 | of our subprocesses are in existence, we proceed to use select() as if | |
3921 | waitpid() had returned zero. I think this is safe. */ | |
3922 | ||
3923 | if (pid < 0) | |
3924 | { | |
3925 | if (errno != ECHILD) continue; /* Repeats the waitpid() */ | |
3926 | ||
3927 | DEBUG(D_deliver) | |
3928 | debug_printf("waitpid() returned -1/ECHILD: checking explicitly " | |
3929 | "for process existence\n"); | |
3930 | ||
3931 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3932 | { | |
3933 | if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0) | |
3934 | { | |
3935 | DEBUG(D_deliver) debug_printf("process %d still exists: assume " | |
3936 | "stolen by strace\n", (int)pid); | |
3937 | break; /* With poffset set */ | |
3938 | } | |
3939 | } | |
3940 | ||
3941 | if (poffset >= remote_max_parallel) | |
3942 | { | |
3943 | DEBUG(D_deliver) debug_printf("*** no delivery children found\n"); | |
3944 | return NULL; /* This is the error return */ | |
3945 | } | |
3946 | } | |
3947 | ||
3948 | /* A pid value greater than 0 breaks the "while" loop. A negative value has | |
3949 | been handled above. A return value of zero means that there is at least one | |
3950 | subprocess, but there are no completed subprocesses. See if any pipes are | |
3951 | ready with any data for reading. */ | |
3952 | ||
3953 | DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n"); | |
3954 | ||
3955 | maxpipe = 0; | |
3956 | FD_ZERO(&select_pipes); | |
3957 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
059ec3d9 PH |
3958 | if (parlist[poffset].pid != 0) |
3959 | { | |
3960 | int fd = parlist[poffset].fd; | |
3961 | FD_SET(fd, &select_pipes); | |
3962 | if (fd > maxpipe) maxpipe = fd; | |
3963 | } | |
059ec3d9 PH |
3964 | |
3965 | /* Stick in a 60-second timeout, just in case. */ | |
3966 | ||
3967 | tv.tv_sec = 60; | |
3968 | tv.tv_usec = 0; | |
3969 | ||
3970 | readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes, | |
3971 | NULL, NULL, &tv); | |
3972 | ||
3973 | /* Scan through the pipes and read any that are ready; use the count | |
3974 | returned by select() to stop when there are no more. Select() can return | |
3975 | with no processes (e.g. if interrupted). This shouldn't matter. | |
3976 | ||
3977 | If par_read_pipe() returns TRUE, it means that either the terminating Z was | |
3978 | read, or there was a disaster. In either case, we are finished with this | |
3979 | process. Do an explicit wait() for the process and break the main loop if | |
3980 | it succeeds. | |
3981 | ||
3982 | It turns out that we have to deal with the case of an interrupted system | |
3983 | call, which can happen on some operating systems if the signal handling is | |
3984 | set up to do that by default. */ | |
3985 | ||
3986 | for (poffset = 0; | |
3987 | readycount > 0 && poffset < remote_max_parallel; | |
3988 | poffset++) | |
3989 | { | |
d6c82d7b JH |
3990 | if ( (pid = parlist[poffset].pid) != 0 |
3991 | && FD_ISSET(parlist[poffset].fd, &select_pipes) | |
3992 | ) | |
059ec3d9 PH |
3993 | { |
3994 | readycount--; | |
3995 | if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */ | |
059ec3d9 PH |
3996 | for (;;) /* Loop for signals */ |
3997 | { | |
3998 | pid_t endedpid = waitpid(pid, &status, 0); | |
3999 | if (endedpid == pid) goto PROCESS_DONE; | |
4000 | if (endedpid != (pid_t)(-1) || errno != EINTR) | |
4001 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return " | |
4002 | "%d (errno = %d) from waitpid() for process %d", | |
4003 | (int)endedpid, errno, (int)pid); | |
4004 | } | |
059ec3d9 PH |
4005 | } |
4006 | } | |
4007 | ||
4008 | /* Now go back and look for a completed subprocess again. */ | |
4009 | } | |
4010 | ||
4011 | /* A completed process was detected by the non-blocking waitpid(). Find the | |
4012 | data block that corresponds to this subprocess. */ | |
4013 | ||
4014 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
4015 | if (pid == parlist[poffset].pid) break; | |
4016 | ||
4017 | /* Found the data block; this is a known remote delivery process. We don't | |
4018 | need to repeat the outer loop. This should be what normally happens. */ | |
4019 | ||
4020 | if (poffset < remote_max_parallel) break; | |
4021 | ||
4022 | /* This situation is an error, but it's probably better to carry on looking | |
4023 | for another process than to give up (as we used to do). */ | |
4024 | ||
4025 | log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote " | |
4026 | "transport process list", pid); | |
4027 | } /* End of the "for" loop */ | |
4028 | ||
4029 | /* Come here when all the data was completely read after a select(), and | |
4030 | the process in pid has been wait()ed for. */ | |
4031 | ||
4032 | PROCESS_DONE: | |
4033 | ||
4034 | DEBUG(D_deliver) | |
4035 | { | |
4036 | if (status == 0) | |
4037 | debug_printf("remote delivery process %d ended\n", (int)pid); | |
4038 | else | |
4039 | debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid, | |
4040 | status); | |
4041 | } | |
4042 | ||
4043 | set_process_info("delivering %s", message_id); | |
4044 | ||
4045 | /* Get the chain of processed addresses */ | |
4046 | ||
4047 | addrlist = parlist[poffset].addrlist; | |
4048 | ||
4049 | /* If the process did not finish cleanly, record an error and freeze (except | |
4050 | for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed, | |
4051 | in case the delivery did actually happen. */ | |
4052 | ||
4053 | if ((status & 0xffff) != 0) | |
4054 | { | |
4055 | uschar *msg; | |
4056 | int msb = (status >> 8) & 255; | |
4057 | int lsb = status & 255; | |
4058 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
4059 | ||
4060 | msg = string_sprintf("%s transport process returned non-zero status 0x%04x: " | |
4061 | "%s %d", | |
4062 | addrlist->transport->driver_name, | |
4063 | status, | |
4064 | (msb == 0)? "terminated by signal" : "exit code", | |
4065 | code); | |
4066 | ||
4067 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
4068 | addrlist->special_action = SPECIAL_FREEZE; | |
4069 | ||
d6c82d7b | 4070 | for (addr = addrlist; addr; addr = addr->next) |
059ec3d9 PH |
4071 | { |
4072 | addr->transport_return = DEFER; | |
4073 | addr->message = msg; | |
4074 | } | |
4075 | ||
4076 | remove_journal = FALSE; | |
4077 | } | |
4078 | ||
4079 | /* Else complete reading the pipe to get the result of the delivery, if all | |
4080 | the data has not yet been obtained. */ | |
4081 | ||
4082 | else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE); | |
4083 | ||
4084 | /* Put the data count and return path into globals, mark the data slot unused, | |
4085 | decrement the count of subprocesses, and return the address chain. */ | |
4086 | ||
4087 | transport_count = parlist[poffset].transport_count; | |
4088 | used_return_path = parlist[poffset].return_path; | |
4089 | parlist[poffset].pid = 0; | |
4090 | parcount--; | |
4091 | return addrlist; | |
4092 | } | |
4093 | ||
4094 | ||
4095 | ||
4096 | /************************************************* | |
4097 | * Wait for subprocesses and post-process * | |
4098 | *************************************************/ | |
4099 | ||
4100 | /* This function waits for subprocesses until the number that are still running | |
4101 | is below a given threshold. For each complete subprocess, the addresses are | |
4102 | post-processed. If we can't find a running process, there is some shambles. | |
4103 | Better not bomb out, as that might lead to multiple copies of the message. Just | |
4104 | log and proceed as if all done. | |
4105 | ||
4106 | Arguments: | |
4107 | max maximum number of subprocesses to leave running | |
4108 | fallback TRUE if processing fallback hosts | |
4109 | ||
4110 | Returns: nothing | |
4111 | */ | |
4112 | ||
4113 | static void | |
4114 | par_reduce(int max, BOOL fallback) | |
4115 | { | |
4116 | while (parcount > max) | |
4117 | { | |
4118 | address_item *doneaddr = par_wait(); | |
d6c82d7b | 4119 | if (!doneaddr) |
059ec3d9 PH |
4120 | { |
4121 | log_write(0, LOG_MAIN|LOG_PANIC, | |
4122 | "remote delivery process count got out of step"); | |
4123 | parcount = 0; | |
4124 | } | |
fa41615d JH |
4125 | else |
4126 | { | |
4127 | transport_instance * tp = doneaddr->transport; | |
4128 | if (tp->max_parallel) | |
4129 | enq_end(string_sprintf("tpt-serialize-%s", tp->name)); | |
4130 | ||
4131 | remote_post_process(doneaddr, LOG_MAIN, NULL, fallback); | |
4132 | } | |
059ec3d9 PH |
4133 | } |
4134 | } | |
4135 | ||
1ac6b2e7 | 4136 | static void |
2cee425a | 4137 | rmt_dlv_checked_write(int fd, char id, char subid, void * buf, ssize_t size) |
1ac6b2e7 | 4138 | { |
6c454556 HSHR |
4139 | uschar pipe_header[PIPE_HEADER_SIZE+1]; |
4140 | size_t total_len = PIPE_HEADER_SIZE + size; | |
4141 | ||
4142 | struct iovec iov[2] = { | |
4143 | { pipe_header, PIPE_HEADER_SIZE }, /* indication about the data to expect */ | |
4144 | { buf, size } /* *the* data */ | |
4145 | }; | |
4146 | ||
2cee425a | 4147 | ssize_t ret; |
bd21a787 WB |
4148 | |
4149 | /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */ | |
4150 | /* complain to log if someone tries with buffer sizes we can't handle*/ | |
4151 | ||
6c454556 | 4152 | if (size > BIG_BUFFER_SIZE-1) |
d6c82d7b | 4153 | { |
94431adb | 4154 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
6c454556 HSHR |
4155 | "Failed writing transport result to pipe: can't handle buffers > %d bytes. truncating!\n", |
4156 | BIG_BUFFER_SIZE-1); | |
4157 | size = BIG_BUFFER_SIZE; | |
d6c82d7b | 4158 | } |
bd21a787 | 4159 | |
7845dbb3 | 4160 | /* Should we check that we do not write more than PIPE_BUF? What would |
6c454556 | 4161 | that help? */ |
bd21a787 WB |
4162 | |
4163 | /* convert size to human readable string prepended by id and subid */ | |
7845dbb3 JH |
4164 | if (PIPE_HEADER_SIZE != snprintf(CS pipe_header, PIPE_HEADER_SIZE+1, "%c%c%05ld", |
4165 | id, subid, (long)size)) | |
bd21a787 | 4166 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n"); |
bd21a787 | 4167 | |
7845dbb3 JH |
4168 | DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%ld,final:%s\n", |
4169 | id, subid, (long)size, pipe_header); | |
bd21a787 | 4170 | |
6c454556 | 4171 | if ((ret = writev(fd, iov, 2)) != total_len) |
7845dbb3 JH |
4172 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
4173 | "Failed writing transport result to pipe (%ld of %ld bytes): %s", | |
4174 | (long)ret, (long)total_len, ret == -1 ? strerror(errno) : "short write"); | |
1ac6b2e7 JH |
4175 | } |
4176 | ||
059ec3d9 PH |
4177 | /************************************************* |
4178 | * Do remote deliveries * | |
4179 | *************************************************/ | |
4180 | ||
4181 | /* This function is called to process the addresses in addr_remote. We must | |
4182 | pick off the queue all addresses that have the same transport, remote | |
4183 | destination, and errors address, and hand them to the transport in one go, | |
4184 | subject to some configured limitations. If this is a run to continue delivering | |
4185 | to an existing delivery channel, skip all but those addresses that can go to | |
4186 | that channel. The skipped addresses just get deferred. | |
4187 | ||
4188 | If mua_wrapper is set, all addresses must be able to be sent in a single | |
4189 | transaction. If not, this function yields FALSE. | |
4190 | ||
4191 | In Exim 4, remote deliveries are always done in separate processes, even | |
4192 | if remote_max_parallel = 1 or if there's only one delivery to do. The reason | |
4193 | is so that the base process can retain privilege. This makes the | |
4194 | implementation of fallback transports feasible (though not initially done.) | |
4195 | ||
4196 | We create up to the configured number of subprocesses, each of which passes | |
4197 | back the delivery state via a pipe. (However, when sending down an existing | |
4198 | connection, remote_max_parallel is forced to 1.) | |
4199 | ||
4200 | Arguments: | |
4201 | fallback TRUE if processing fallback hosts | |
4202 | ||
4203 | Returns: TRUE normally | |
4204 | FALSE if mua_wrapper is set and the addresses cannot all be sent | |
4205 | in one transaction | |
4206 | */ | |
4207 | ||
4208 | static BOOL | |
4209 | do_remote_deliveries(BOOL fallback) | |
4210 | { | |
4211 | int parmax; | |
059ec3d9 PH |
4212 | int poffset; |
4213 | ||
4214 | parcount = 0; /* Number of executing subprocesses */ | |
4215 | ||
4216 | /* When sending down an existing channel, only do one delivery at a time. | |
4217 | We use a local variable (parmax) to hold the maximum number of processes; | |
4218 | this gets reduced from remote_max_parallel if we can't create enough pipes. */ | |
4219 | ||
d6c82d7b | 4220 | if (continue_transport) remote_max_parallel = 1; |
059ec3d9 PH |
4221 | parmax = remote_max_parallel; |
4222 | ||
4223 | /* If the data for keeping a list of processes hasn't yet been | |
4224 | set up, do so. */ | |
4225 | ||
d6c82d7b | 4226 | if (!parlist) |
059ec3d9 PH |
4227 | { |
4228 | parlist = store_get(remote_max_parallel * sizeof(pardata)); | |
4229 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
4230 | parlist[poffset].pid = 0; | |
4231 | } | |
4232 | ||
4233 | /* Now loop for each remote delivery */ | |
4234 | ||
d7978c0f | 4235 | for (int delivery_count = 0; addr_remote; delivery_count++) |
059ec3d9 PH |
4236 | { |
4237 | pid_t pid; | |
4238 | uid_t uid; | |
4239 | gid_t gid; | |
4240 | int pfd[2]; | |
4241 | int address_count = 1; | |
4242 | int address_count_max; | |
4243 | BOOL multi_domain; | |
4244 | BOOL use_initgroups; | |
4245 | BOOL pipe_done = FALSE; | |
4246 | transport_instance *tp; | |
4247 | address_item **anchor = &addr_remote; | |
4248 | address_item *addr = addr_remote; | |
4249 | address_item *last = addr; | |
4250 | address_item *next; | |
d6c82d7b | 4251 | uschar * panicmsg; |
fa41615d | 4252 | uschar * serialize_key = NULL; |
059ec3d9 PH |
4253 | |
4254 | /* Pull the first address right off the list. */ | |
4255 | ||
4256 | addr_remote = addr->next; | |
4257 | addr->next = NULL; | |
4258 | ||
4259 | DEBUG(D_deliver|D_transport) | |
4260 | debug_printf("--------> %s <--------\n", addr->address); | |
4261 | ||
4262 | /* If no transport has been set, there has been a big screw-up somewhere. */ | |
4263 | ||
d6c82d7b | 4264 | if (!(tp = addr->transport)) |
059ec3d9 | 4265 | { |
8768d548 | 4266 | f.disable_logging = FALSE; /* Jic */ |
d6c82d7b JH |
4267 | panicmsg = US"No transport set by router"; |
4268 | goto panic_continue; | |
059ec3d9 PH |
4269 | } |
4270 | ||
4271 | /* Check that this base address hasn't previously been delivered to this | |
4272 | transport. The check is necessary at this point to handle homonymic addresses | |
4273 | correctly in cases where the pattern of redirection changes between delivery | |
4274 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
4275 | time. */ | |
4276 | ||
c2c19e9d | 4277 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
4278 | |
4279 | /* Force failure if the message is too big. */ | |
4280 | ||
d6c82d7b | 4281 | if (tp->message_size_limit) |
059ec3d9 PH |
4282 | { |
4283 | int rc = check_message_size(tp, addr); | |
4284 | if (rc != OK) | |
4285 | { | |
4286 | addr->transport_return = rc; | |
4287 | remote_post_process(addr, LOG_MAIN, NULL, fallback); | |
4288 | continue; | |
4289 | } | |
4290 | } | |
4291 | ||
4292 | /* Get the flag which specifies whether the transport can handle different | |
506900af JH |
4293 | domains that nevertheless resolve to the same set of hosts. If it needs |
4294 | expanding, get variables set: $address_data, $domain_data, $localpart_data, | |
4295 | $host, $host_address, $host_port. */ | |
4296 | if (tp->expand_multi_domain) | |
4297 | deliver_set_expansions(addr); | |
4298 | ||
4299 | if (exp_bool(addr, US"transport", tp->name, D_transport, | |
4300 | US"multi_domain", tp->multi_domain, tp->expand_multi_domain, | |
4301 | &multi_domain) != OK) | |
4302 | { | |
4303 | deliver_set_expansions(NULL); | |
d6c82d7b JH |
4304 | panicmsg = addr->message; |
4305 | goto panic_continue; | |
506900af | 4306 | } |
059ec3d9 PH |
4307 | |
4308 | /* Get the maximum it can handle in one envelope, with zero meaning | |
4309 | unlimited, which is forced for the MUA wrapper case. */ | |
4310 | ||
4311 | address_count_max = tp->max_addresses; | |
4312 | if (address_count_max == 0 || mua_wrapper) address_count_max = 999999; | |
4313 | ||
4314 | ||
4315 | /************************************************************************/ | |
4316 | /***** This is slightly experimental code, but should be safe. *****/ | |
4317 | ||
4318 | /* The address_count_max value is the maximum number of addresses that the | |
4319 | transport can send in one envelope. However, the transport must be capable of | |
4320 | dealing with any number of addresses. If the number it gets exceeds its | |
4321 | envelope limitation, it must send multiple copies of the message. This can be | |
4322 | done over a single connection for SMTP, so uses less resources than making | |
4323 | multiple connections. On the other hand, if remote_max_parallel is greater | |
4324 | than one, it is perhaps a good idea to use parallel processing to move the | |
4325 | message faster, even if that results in multiple simultaneous connections to | |
4326 | the same host. | |
4327 | ||
4328 | How can we come to some compromise between these two ideals? What we do is to | |
4329 | limit the number of addresses passed to a single instance of a transport to | |
4330 | the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total | |
4331 | number of addresses routed to remote transports divided by | |
4332 | remote_max_parallel. For example, if the message has 100 remote recipients, | |
4333 | remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at | |
4334 | once. But if rcpt_max is 100, we could send up to 100. | |
4335 | ||
4336 | Of course, not all the remotely addresses in a message are going to go to the | |
4337 | same set of hosts (except in smarthost configurations), so this is just a | |
4338 | heuristic way of dividing up the work. | |
4339 | ||
4340 | Furthermore (1), because this may not be wanted in some cases, and also to | |
4341 | cope with really pathological cases, there is also a limit to the number of | |
4342 | messages that are sent over one connection. This is the same limit that is | |
4343 | used when sending several different messages over the same connection. | |
4344 | Continue_sequence is set when in this situation, to the number sent so | |
4345 | far, including this message. | |
4346 | ||
4347 | Furthermore (2), when somebody explicitly sets the maximum value to 1, it | |
4348 | is probably because they are using VERP, in which case they want to pass only | |
4349 | one address at a time to the transport, in order to be able to use | |
4350 | $local_part and $domain in constructing a new return path. We could test for | |
4351 | the use of these variables, but as it is so likely they will be used when the | |
4352 | maximum is 1, we don't bother. Just leave the value alone. */ | |
4353 | ||
d6c82d7b JH |
4354 | if ( address_count_max != 1 |
4355 | && address_count_max < remote_delivery_count/remote_max_parallel | |
4356 | ) | |
059ec3d9 PH |
4357 | { |
4358 | int new_max = remote_delivery_count/remote_max_parallel; | |
4359 | int message_max = tp->connection_max_messages; | |
4360 | if (connection_max_messages >= 0) message_max = connection_max_messages; | |
4361 | message_max -= continue_sequence - 1; | |
4362 | if (message_max > 0 && new_max > address_count_max * message_max) | |
4363 | new_max = address_count_max * message_max; | |
4364 | address_count_max = new_max; | |
4365 | } | |
4366 | ||
4367 | /************************************************************************/ | |
4368 | ||
4369 | ||
4370 | /* Pick off all addresses which have the same transport, errors address, | |
4371 | destination, and extra headers. In some cases they point to the same host | |
4372 | list, but we also need to check for identical host lists generated from | |
4373 | entirely different domains. The host list pointers can be NULL in the case | |
4374 | where the hosts are defined in the transport. There is also a configured | |
4375 | maximum limit of addresses that can be handled at once (see comments above | |
506900af JH |
4376 | for how it is computed). |
4377 | If the transport does not handle multiple domains, enforce that also, | |
4378 | and if it might need a per-address check for this, re-evaluate it. | |
4379 | */ | |
059ec3d9 | 4380 | |
d6c82d7b | 4381 | while ((next = *anchor) && address_count < address_count_max) |
059ec3d9 | 4382 | { |
506900af JH |
4383 | BOOL md; |
4384 | if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0) | |
4385 | && tp == next->transport | |
4386 | && same_hosts(next->host_list, addr->host_list) | |
d43cbe25 JH |
4387 | && same_strings(next->prop.errors_address, addr->prop.errors_address) |
4388 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
506900af | 4389 | && same_ugid(tp, next, addr) |
d43cbe25 JH |
4390 | && ( next->prop.remove_headers == addr->prop.remove_headers |
4391 | || ( next->prop.remove_headers | |
4392 | && addr->prop.remove_headers | |
4393 | && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0 | |
506900af JH |
4394 | ) ) |
4395 | && ( !multi_domain | |
4396 | || ( ( | |
863bd541 | 4397 | (void)(!tp->expand_multi_domain || ((void)deliver_set_expansions(next), 1)), |
506900af JH |
4398 | exp_bool(addr, |
4399 | US"transport", next->transport->name, D_transport, | |
4400 | US"multi_domain", next->transport->multi_domain, | |
4401 | next->transport->expand_multi_domain, &md) == OK | |
4402 | ) | |
4403 | && md | |
4404 | ) ) ) | |
059ec3d9 PH |
4405 | { |
4406 | *anchor = next->next; | |
4407 | next->next = NULL; | |
4408 | next->first = addr; /* remember top one (for retry processing) */ | |
4409 | last->next = next; | |
4410 | last = next; | |
4411 | address_count++; | |
4412 | } | |
4413 | else anchor = &(next->next); | |
506900af | 4414 | deliver_set_expansions(NULL); |
059ec3d9 PH |
4415 | } |
4416 | ||
4417 | /* If we are acting as an MUA wrapper, all addresses must go in a single | |
4418 | transaction. If not, put them back on the chain and yield FALSE. */ | |
4419 | ||
d6c82d7b | 4420 | if (mua_wrapper && addr_remote) |
059ec3d9 PH |
4421 | { |
4422 | last->next = addr_remote; | |
4423 | addr_remote = addr; | |
4424 | return FALSE; | |
4425 | } | |
4426 | ||
fa41615d JH |
4427 | /* If the transport is limited for parallellism, enforce that here. |
4428 | The hints DB entry is decremented in par_reduce(), when we reap the | |
4429 | transport process. */ | |
4430 | ||
3070ceee JH |
4431 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
4432 | if ((panicmsg = expand_string_message)) | |
fa41615d | 4433 | goto panic_continue; |
3070ceee JH |
4434 | else |
4435 | continue; /* Loop for the next set of addresses. */ | |
fa41615d | 4436 | |
059ec3d9 PH |
4437 | /* Set up the expansion variables for this set of addresses */ |
4438 | ||
4439 | deliver_set_expansions(addr); | |
4440 | ||
018c60d7 JH |
4441 | /* Ensure any transport-set auth info is fresh */ |
4442 | addr->authenticator = addr->auth_id = addr->auth_sndr = NULL; | |
4443 | ||
059ec3d9 PH |
4444 | /* Compute the return path, expanding a new one if required. The old one |
4445 | must be set first, as it might be referred to in the expansion. */ | |
4446 | ||
d6c82d7b | 4447 | if(addr->prop.errors_address) |
d43cbe25 | 4448 | return_path = addr->prop.errors_address; |
384152a6 | 4449 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 4450 | else if(addr->prop.srs_sender) |
d43cbe25 | 4451 | return_path = addr->prop.srs_sender; |
384152a6 TK |
4452 | #endif |
4453 | else | |
4454 | return_path = sender_address; | |
059ec3d9 | 4455 | |
d6c82d7b | 4456 | if (tp->return_path) |
059ec3d9 PH |
4457 | { |
4458 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b JH |
4459 | if (new_return_path) |
4460 | return_path = new_return_path; | |
8768d548 | 4461 | else if (!f.expand_string_forcedfail) |
059ec3d9 | 4462 | { |
d6c82d7b JH |
4463 | panicmsg = string_sprintf("Failed to expand return path \"%s\": %s", |
4464 | tp->return_path, expand_string_message); | |
fa41615d | 4465 | goto enq_continue; |
059ec3d9 | 4466 | } |
059ec3d9 PH |
4467 | } |
4468 | ||
929ba01c PH |
4469 | /* Find the uid, gid, and use_initgroups setting for this transport. Failure |
4470 | logs and sets up error messages, so we just post-process and continue with | |
4471 | the next address. */ | |
4472 | ||
4473 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) | |
4474 | { | |
d6c82d7b | 4475 | panicmsg = NULL; |
fa41615d | 4476 | goto enq_continue; |
929ba01c PH |
4477 | } |
4478 | ||
059ec3d9 PH |
4479 | /* If this transport has a setup function, call it now so that it gets |
4480 | run in this process and not in any subprocess. That way, the results of | |
929ba01c PH |
4481 | any setup that are retained by the transport can be reusable. One of the |
4482 | things the setup does is to set the fallback host lists in the addresses. | |
4483 | That is why it is called at this point, before the continue delivery | |
4484 | processing, because that might use the fallback hosts. */ | |
059ec3d9 | 4485 | |
d6c82d7b | 4486 | if (tp->setup) |
929ba01c | 4487 | (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL)); |
059ec3d9 | 4488 | |
57cc2785 JH |
4489 | /* If we have a connection still open from a verify stage (lazy-close) |
4490 | treat it as if it is a continued connection (apart from the counter used | |
4491 | for the log line mark). */ | |
4492 | ||
74f1a423 | 4493 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 JH |
4494 | { |
4495 | DEBUG(D_deliver) | |
4496 | debug_printf("lazy-callout-close: have conn still open from verification\n"); | |
4497 | continue_transport = cutthrough.transport; | |
4498 | continue_hostname = string_copy(cutthrough.host.name); | |
4499 | continue_host_address = string_copy(cutthrough.host.address); | |
4500 | continue_sequence = 1; | |
4501 | sending_ip_address = cutthrough.snd_ip; | |
4502 | sending_port = cutthrough.snd_port; | |
4503 | smtp_peer_options = cutthrough.peer_options; | |
4504 | } | |
4505 | ||
059ec3d9 PH |
4506 | /* If this is a run to continue delivery down an already-established |
4507 | channel, check that this set of addresses matches the transport and | |
4508 | the channel. If it does not, defer the addresses. If a host list exists, | |
4509 | we must check that the continue host is on the list. Otherwise, the | |
4510 | host is set in the transport. */ | |
4511 | ||
8768d548 | 4512 | f.continue_more = FALSE; /* In case got set for the last lot */ |
d6c82d7b | 4513 | if (continue_transport) |
059ec3d9 PH |
4514 | { |
4515 | BOOL ok = Ustrcmp(continue_transport, tp->name) == 0; | |
e39fdc85 JH |
4516 | |
4517 | /* If the transport is about to override the host list do not check | |
4518 | it here but take the cost of running the transport process to discover | |
4519 | if the continued_hostname connection is suitable. This is a layering | |
4520 | violation which is unfortunate as it requires we haul in the smtp | |
4521 | include file. */ | |
4522 | ||
4523 | if (ok) | |
059ec3d9 | 4524 | { |
e39fdc85 JH |
4525 | smtp_transport_options_block * ob; |
4526 | ||
d7571ac5 | 4527 | if ( !( Ustrcmp(tp->info->driver_name, "smtp") == 0 |
e39fdc85 JH |
4528 | && (ob = (smtp_transport_options_block *)tp->options_block) |
4529 | && ob->hosts_override && ob->hosts | |
4530 | ) | |
4531 | && addr->host_list | |
4532 | ) | |
4533 | { | |
e39fdc85 | 4534 | ok = FALSE; |
d7978c0f | 4535 | for (host_item * h = addr->host_list; h; h = h->next) |
e39fdc85 JH |
4536 | if (Ustrcmp(h->name, continue_hostname) == 0) |
4537 | /*XXX should also check port here */ | |
4538 | { ok = TRUE; break; } | |
4539 | } | |
059ec3d9 PH |
4540 | } |
4541 | ||
4542 | /* Addresses not suitable; defer or queue for fallback hosts (which | |
4543 | might be the continue host) and skip to next address. */ | |
4544 | ||
4545 | if (!ok) | |
4546 | { | |
e47252f5 JH |
4547 | DEBUG(D_deliver) debug_printf("not suitable for continue_transport (%s)\n", |
4548 | Ustrcmp(continue_transport, tp->name) != 0 | |
4549 | ? string_sprintf("tpt %s vs %s", continue_transport, tp->name) | |
4550 | : string_sprintf("no host matching %s", continue_hostname)); | |
fa41615d | 4551 | if (serialize_key) enq_end(serialize_key); |
059ec3d9 | 4552 | |
d6c82d7b | 4553 | if (addr->fallback_hosts && !fallback) |
059ec3d9 | 4554 | { |
fa41615d | 4555 | for (next = addr; ; next = next->next) |
059ec3d9 PH |
4556 | { |
4557 | next->host_list = next->fallback_hosts; | |
4558 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address); | |
d6c82d7b | 4559 | if (!next->next) break; |
059ec3d9 PH |
4560 | } |
4561 | next->next = addr_fallback; | |
4562 | addr_fallback = addr; | |
4563 | } | |
4564 | ||
e3b1f624 | 4565 | else |
3070ceee | 4566 | { |
e3b1f624 JH |
4567 | for (next = addr; ; next = next->next) |
4568 | { | |
4569 | DEBUG(D_deliver) debug_printf(" %s to def list\n", next->address); | |
4570 | if (!next->next) break; | |
4571 | } | |
3070ceee JH |
4572 | next->next = addr_defer; |
4573 | addr_defer = addr; | |
4574 | } | |
059ec3d9 PH |
4575 | |
4576 | continue; | |
4577 | } | |
4578 | ||
4579 | /* Set a flag indicating whether there are further addresses that list | |
4580 | the continued host. This tells the transport to leave the channel open, | |
6c140c01 JH |
4581 | but not to pass it to another delivery process. We'd like to do that |
4582 | for non-continue_transport cases too but the knowlege of which host is | |
4583 | connected to is too hard to manage. Perhaps we need a finer-grain | |
4584 | interface to the transport. */ | |
059ec3d9 | 4585 | |
8768d548 | 4586 | for (next = addr_remote; next && !f.continue_more; next = next->next) |
d7978c0f | 4587 | for (host_item * h = next->host_list; h; h = h->next) |
059ec3d9 | 4588 | if (Ustrcmp(h->name, continue_hostname) == 0) |
8768d548 | 4589 | { f.continue_more = TRUE; break; } |
059ec3d9 PH |
4590 | } |
4591 | ||
4592 | /* The transports set up the process info themselves as they may connect | |
4593 | to more than one remote machine. They also have to set up the filter | |
4594 | arguments, if required, so that the host name and address are available | |
4595 | for expansion. */ | |
4596 | ||
4597 | transport_filter_argv = NULL; | |
4598 | ||
059ec3d9 PH |
4599 | /* Create the pipe for inter-process communication. If pipe creation |
4600 | fails, it is probably because the value of remote_max_parallel is so | |
4601 | large that too many file descriptors for pipes have been created. Arrange | |
4602 | to wait for a process to finish, and then try again. If we still can't | |
4603 | create a pipe when all processes have finished, break the retry loop. */ | |
4604 | ||
4605 | while (!pipe_done) | |
4606 | { | |
4607 | if (pipe(pfd) == 0) pipe_done = TRUE; | |
4608 | else if (parcount > 0) parmax = parcount; | |
4609 | else break; | |
4610 | ||
4611 | /* We need to make the reading end of the pipe non-blocking. There are | |
4612 | two different options for this. Exim is cunningly (I hope!) coded so | |
4613 | that it can use either of them, though it prefers O_NONBLOCK, which | |
4614 | distinguishes between EOF and no-more-data. */ | |
4615 | ||
4c0a7a9c HSHR |
4616 | /* The data appears in a timely manner and we already did a select on |
4617 | all pipes, so I do not see a reason to use non-blocking IO here | |
4618 | ||
a7538db1 | 4619 | #ifdef O_NONBLOCK |
ff790e47 | 4620 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK); |
a7538db1 | 4621 | #else |
ff790e47 | 4622 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY); |
a7538db1 | 4623 | #endif |
4c0a7a9c | 4624 | */ |
059ec3d9 PH |
4625 | |
4626 | /* If the maximum number of subprocesses already exist, wait for a process | |
4627 | to finish. If we ran out of file descriptors, parmax will have been reduced | |
4628 | from its initial value of remote_max_parallel. */ | |
4629 | ||
4630 | par_reduce(parmax - 1, fallback); | |
4631 | } | |
4632 | ||
4633 | /* If we failed to create a pipe and there were no processes to wait | |
4634 | for, we have to give up on this one. Do this outside the above loop | |
4635 | so that we can continue the main loop. */ | |
4636 | ||
4637 | if (!pipe_done) | |
4638 | { | |
d6c82d7b | 4639 | panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno)); |
fa41615d | 4640 | goto enq_continue; |
059ec3d9 PH |
4641 | } |
4642 | ||
4643 | /* Find a free slot in the pardata list. Must do this after the possible | |
4644 | waiting for processes to finish, because a terminating process will free | |
4645 | up a slot. */ | |
4646 | ||
4647 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
d6c82d7b JH |
4648 | if (parlist[poffset].pid == 0) |
4649 | break; | |
059ec3d9 PH |
4650 | |
4651 | /* If there isn't one, there has been a horrible disaster. */ | |
4652 | ||
4653 | if (poffset >= remote_max_parallel) | |
4654 | { | |
f1e894f3 PH |
4655 | (void)close(pfd[pipe_write]); |
4656 | (void)close(pfd[pipe_read]); | |
d6c82d7b | 4657 | panicmsg = US"Unexpectedly no free subprocess slot"; |
fa41615d | 4658 | goto enq_continue; |
059ec3d9 PH |
4659 | } |
4660 | ||
4661 | /* Now fork a subprocess to do the remote delivery, but before doing so, | |
4c04137d | 4662 | ensure that any cached resources are released so as not to interfere with |
059ec3d9 PH |
4663 | what happens in the subprocess. */ |
4664 | ||
4665 | search_tidyup(); | |
4666 | ||
4667 | if ((pid = fork()) == 0) | |
4668 | { | |
4669 | int fd = pfd[pipe_write]; | |
4670 | host_item *h; | |
4671 | ||
2a47f028 JH |
4672 | /* Setting this global in the subprocess means we need never clear it */ |
4673 | transport_name = tp->name; | |
059ec3d9 | 4674 | |
2a47f028 | 4675 | /* There are weird circumstances in which logging is disabled */ |
8768d548 | 4676 | f.disable_logging = tp->disable_logging; |
059ec3d9 PH |
4677 | |
4678 | /* Show pids on debug output if parallelism possible */ | |
4679 | ||
d6c82d7b | 4680 | if (parmax > 1 && (parcount > 0 || addr_remote)) |
059ec3d9 PH |
4681 | { |
4682 | DEBUG(D_any|D_v) debug_selector |= D_pid; | |
4683 | DEBUG(D_deliver) debug_printf("Remote delivery process started\n"); | |
4684 | } | |
4685 | ||
4686 | /* Reset the random number generator, so different processes don't all | |
4687 | have the same sequence. In the test harness we want different, but | |
4688 | predictable settings for each delivery process, so do something explicit | |
4689 | here rather they rely on the fixed reset in the random number function. */ | |
4690 | ||
8768d548 | 4691 | random_seed = f.running_in_test_harness ? 42 + 2*delivery_count : 0; |
059ec3d9 PH |
4692 | |
4693 | /* Set close-on-exec on the pipe so that it doesn't get passed on to | |
4694 | a new process that may be forked to do another delivery down the same | |
4695 | SMTP connection. */ | |
4696 | ||
ff790e47 | 4697 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
059ec3d9 PH |
4698 | |
4699 | /* Close open file descriptors for the pipes of other processes | |
4700 | that are running in parallel. */ | |
4701 | ||
4702 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
f1e894f3 | 4703 | if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd); |
059ec3d9 PH |
4704 | |
4705 | /* This process has inherited a copy of the file descriptor | |
4706 | for the data file, but its file pointer is shared with all the | |
4707 | other processes running in parallel. Therefore, we have to re-open | |
4708 | the file in order to get a new file descriptor with its own | |
4709 | file pointer. We don't need to lock it, as the lock is held by | |
4710 | the parent process. There doesn't seem to be any way of doing | |
4711 | a dup-with-new-file-pointer. */ | |
4712 | ||
f1e894f3 | 4713 | (void)close(deliver_datafile); |
41313d92 JH |
4714 | { |
4715 | uschar * fname = spool_fname(US"input", message_subdir, message_id, US"-D"); | |
059ec3d9 | 4716 | |
92b0827a JH |
4717 | if ((deliver_datafile = Uopen(fname, |
4718 | #ifdef O_CLOEXEC | |
4719 | O_CLOEXEC | | |
4720 | #endif | |
4721 | O_RDWR | O_APPEND, 0)) < 0) | |
059ec3d9 | 4722 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote " |
41313d92 JH |
4723 | "parallel delivery: %s", fname, strerror(errno)); |
4724 | } | |
059ec3d9 PH |
4725 | |
4726 | /* Set the close-on-exec flag */ | |
92b0827a | 4727 | #ifndef O_CLOEXEC |
ff790e47 | 4728 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
059ec3d9 | 4729 | FD_CLOEXEC); |
92b0827a | 4730 | #endif |
059ec3d9 PH |
4731 | |
4732 | /* Set the uid/gid of this process; bombs out on failure. */ | |
4733 | ||
4734 | exim_setugid(uid, gid, use_initgroups, | |
4735 | string_sprintf("remote delivery to %s with transport=%s", | |
4736 | addr->address, tp->name)); | |
4737 | ||
4738 | /* Close the unwanted half of this process' pipe, set the process state, | |
4739 | and run the transport. Afterwards, transport_count will contain the number | |
4740 | of bytes written. */ | |
4741 | ||
f1e894f3 | 4742 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
4743 | set_process_info("delivering %s using %s", message_id, tp->name); |
4744 | debug_print_string(tp->debug_string); | |
4745 | if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr); | |
4746 | ||
4747 | set_process_info("delivering %s (just run %s for %s%s in subprocess)", | |
d6c82d7b | 4748 | message_id, tp->name, addr->address, addr->next ? ", ..." : ""); |
059ec3d9 PH |
4749 | |
4750 | /* Ensure any cached resources that we used are now released */ | |
4751 | ||
4752 | search_tidyup(); | |
4753 | ||
4754 | /* Pass the result back down the pipe. This is a lot more information | |
4755 | than is needed for a local delivery. We have to send back the error | |
4756 | status for each address, the usability status for each host that is | |
4757 | flagged as unusable, and all the retry items. When TLS is in use, we | |
4758 | send also the cipher and peerdn information. Each type of information | |
4759 | is flagged by an identifying byte, and is then in a fixed format (with | |
4760 | strings terminated by zeros), and there is a final terminator at the | |
4761 | end. The host information and retry information is all attached to | |
4762 | the first address, so that gets sent at the start. */ | |
4763 | ||
4764 | /* Host unusability information: for most success cases this will | |
4765 | be null. */ | |
4766 | ||
d6c82d7b | 4767 | for (h = addr->host_list; h; h = h->next) |
059ec3d9 | 4768 | { |
d6c82d7b | 4769 | if (!h->address || h->status < hstatus_unusable) continue; |
bd21a787 WB |
4770 | sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address); |
4771 | rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3); | |
059ec3d9 PH |
4772 | } |
4773 | ||
4774 | /* The number of bytes written. This is the same for each address. Even | |
4775 | if we sent several copies of the message down the same connection, the | |
4776 | size of each one is the same, and it's that value we have got because | |
4777 | transport_count gets reset before calling transport_write_message(). */ | |
4778 | ||
bd21a787 WB |
4779 | memcpy(big_buffer, &transport_count, sizeof(transport_count)); |
4780 | rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count)); | |
059ec3d9 | 4781 | |
6f123593 JH |
4782 | /* Information about what happened to each address. Four item types are |
4783 | used: an optional 'X' item first, for TLS information, then an optional "C" | |
4784 | item for any client-auth info followed by 'R' items for any retry settings, | |
4785 | and finally an 'A' item for the remaining data. */ | |
059ec3d9 | 4786 | |
d6c82d7b | 4787 | for(; addr; addr = addr->next) |
059ec3d9 PH |
4788 | { |
4789 | uschar *ptr; | |
4790 | retry_item *r; | |
4791 | ||
4792 | /* The certificate verification status goes into the flags */ | |
817d9f57 | 4793 | if (tls_out.certificate_verified) setflag(addr, af_cert_verified); |
c0635b6d | 4794 | #ifdef SUPPORT_DANE |
53a7196b | 4795 | if (tls_out.dane_verified) setflag(addr, af_dane_verified); |
a0a2d1ee | 4796 | #endif |
059ec3d9 PH |
4797 | |
4798 | /* Use an X item only if there's something to send */ | |
a7538db1 | 4799 | #ifdef SUPPORT_TLS |
9d1c15ef | 4800 | if (addr->cipher) |
059ec3d9 | 4801 | { |
e6d2a989 | 4802 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1; |
9d1c15ef JH |
4803 | if (!addr->peerdn) |
4804 | *ptr++ = 0; | |
4805 | else | |
5e6d12ac | 4806 | ptr += sprintf(CS ptr, "%.512s", addr->peerdn) + 1; |
9d1c15ef | 4807 | |
bd21a787 | 4808 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); |
059ec3d9 | 4809 | } |
5013d912 JH |
4810 | else if (continue_proxy_cipher) |
4811 | { | |
4812 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", continue_proxy_cipher) + 1; | |
4813 | *ptr++ = 0; | |
4814 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); | |
4815 | } | |
5e6d12ac | 4816 | |
9d1c15ef JH |
4817 | if (addr->peercert) |
4818 | { | |
4819 | ptr = big_buffer; | |
9d1c15ef JH |
4820 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert)) |
4821 | while(*ptr++); | |
4822 | else | |
4823 | *ptr++ = 0; | |
bd21a787 | 4824 | rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer); |
9d1c15ef JH |
4825 | } |
4826 | if (addr->ourcert) | |
4827 | { | |
4828 | ptr = big_buffer; | |
9d1c15ef JH |
4829 | if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert)) |
4830 | while(*ptr++); | |
4831 | else | |
4832 | *ptr++ = 0; | |
bd21a787 | 4833 | rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer); |
9d1c15ef | 4834 | } |
a7538db1 | 4835 | # ifndef DISABLE_OCSP |
018058b2 JH |
4836 | if (addr->ocsp > OCSP_NOT_REQ) |
4837 | { | |
e6d2a989 | 4838 | ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1; |
bd21a787 | 4839 | rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer); |
018058b2 | 4840 | } |
a7538db1 JH |
4841 | # endif |
4842 | #endif /*SUPPORT_TLS*/ | |
059ec3d9 | 4843 | |
6f123593 JH |
4844 | if (client_authenticator) |
4845 | { | |
e6d2a989 | 4846 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1; |
bd21a787 | 4847 | rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer); |
6f123593 JH |
4848 | } |
4849 | if (client_authenticated_id) | |
4850 | { | |
e6d2a989 | 4851 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1; |
bd21a787 | 4852 | rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer); |
6f123593 | 4853 | } |
c8e2fc1e JH |
4854 | if (client_authenticated_sender) |
4855 | { | |
e6d2a989 | 4856 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1; |
bd21a787 | 4857 | rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer); |
c8e2fc1e | 4858 | } |
6f123593 | 4859 | |
a7538db1 | 4860 | #ifndef DISABLE_PRDR |
7eb0e5d2 | 4861 | if (testflag(addr, af_prdr_used)) |
bd21a787 | 4862 | rmt_dlv_checked_write(fd, 'P', '0', NULL, 0); |
b75960c8 | 4863 | #endif |
fd98a5c6 | 4864 | |
7c576fca | 4865 | if (testflag(addr, af_pipelining)) |
ee8b8090 JH |
4866 | #ifdef EXPERIMENTAL_PIPE_CONNECT |
4867 | if (testflag(addr, af_early_pipe)) | |
4868 | rmt_dlv_checked_write(fd, 'L', '2', NULL, 0); | |
4869 | else | |
4870 | #endif | |
7c576fca JH |
4871 | rmt_dlv_checked_write(fd, 'L', '1', NULL, 0); |
4872 | ||
7eb0e5d2 | 4873 | if (testflag(addr, af_chunking_used)) |
e0cc6cda JH |
4874 | rmt_dlv_checked_write(fd, 'K', '0', NULL, 0); |
4875 | ||
1ccd5f67 JH |
4876 | if (testflag(addr, af_tcp_fastopen_conn)) |
4877 | rmt_dlv_checked_write(fd, 'T', | |
ee8b8090 JH |
4878 | testflag(addr, af_tcp_fastopen) ? testflag(addr, af_tcp_fastopen_data) |
4879 | ? '2' : '1' : '0', | |
4880 | NULL, 0); | |
a2673768 | 4881 | |
bd21a787 WB |
4882 | memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware)); |
4883 | rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware)); | |
6c1c3d1d | 4884 | |
059ec3d9 PH |
4885 | /* Retry information: for most success cases this will be null. */ |
4886 | ||
d6c82d7b | 4887 | for (r = addr->retries; r; r = r->next) |
059ec3d9 | 4888 | { |
bd21a787 | 4889 | sprintf(CS big_buffer, "%c%.500s", r->flags, r->key); |
059ec3d9 | 4890 | ptr = big_buffer + Ustrlen(big_buffer+2) + 3; |
32dfdf8b | 4891 | memcpy(ptr, &r->basic_errno, sizeof(r->basic_errno)); |
059ec3d9 | 4892 | ptr += sizeof(r->basic_errno); |
32dfdf8b | 4893 | memcpy(ptr, &r->more_errno, sizeof(r->more_errno)); |
059ec3d9 | 4894 | ptr += sizeof(r->more_errno); |
d6c82d7b | 4895 | if (!r->message) *ptr++ = 0; else |
059ec3d9 PH |
4896 | { |
4897 | sprintf(CS ptr, "%.512s", r->message); | |
4898 | while(*ptr++); | |
4899 | } | |
bd21a787 | 4900 | rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4901 | } |
4902 | ||
e6d2a989 JH |
4903 | #ifdef SUPPORT_SOCKS |
4904 | if (LOGGING(proxy) && proxy_session) | |
4905 | { | |
4906 | ptr = big_buffer; | |
4907 | if (proxy_local_address) | |
4908 | { | |
4909 | DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address); | |
4910 | ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1; | |
4911 | DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port); | |
4912 | memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port)); | |
4913 | ptr += sizeof(proxy_local_port); | |
4914 | } | |
4915 | else | |
4916 | *ptr++ = '\0'; | |
4917 | rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer); | |
4918 | } | |
4919 | #endif | |
4920 | ||
895fbaf2 JH |
4921 | #ifdef EXPERIMENTAL_DSN_INFO |
4922 | /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */ | |
4923 | if (addr->smtp_greeting) | |
4924 | { | |
895fbaf2 | 4925 | DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting); |
e6d2a989 | 4926 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1; |
895fbaf2 JH |
4927 | if (addr->helo_response) |
4928 | { | |
4929 | DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response); | |
e6d2a989 | 4930 | ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1; |
895fbaf2 JH |
4931 | } |
4932 | else | |
4933 | *ptr++ = '\0'; | |
4934 | rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer); | |
4935 | } | |
4936 | #endif | |
4937 | ||
4938 | /* The rest of the information goes in an 'A0' item. */ | |
059ec3d9 | 4939 | |
e6d2a989 | 4940 | sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action); |
895fbaf2 | 4941 | ptr = big_buffer + 2; |
32dfdf8b | 4942 | memcpy(ptr, &addr->basic_errno, sizeof(addr->basic_errno)); |
059ec3d9 | 4943 | ptr += sizeof(addr->basic_errno); |
32dfdf8b | 4944 | memcpy(ptr, &addr->more_errno, sizeof(addr->more_errno)); |
059ec3d9 | 4945 | ptr += sizeof(addr->more_errno); |
32dfdf8b JH |
4946 | memcpy(ptr, &addr->delivery_usec, sizeof(addr->delivery_usec)); |
4947 | ptr += sizeof(addr->delivery_usec); | |
4948 | memcpy(ptr, &addr->flags, sizeof(addr->flags)); | |
059ec3d9 PH |
4949 | ptr += sizeof(addr->flags); |
4950 | ||
d6c82d7b | 4951 | if (!addr->message) *ptr++ = 0; else |
e6d2a989 | 4952 | ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1; |
059ec3d9 | 4953 | |
d6c82d7b | 4954 | if (!addr->user_message) *ptr++ = 0; else |
e6d2a989 | 4955 | ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1; |
059ec3d9 | 4956 | |
d6c82d7b | 4957 | if (!addr->host_used) *ptr++ = 0; else |
059ec3d9 | 4958 | { |
e6d2a989 JH |
4959 | ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1; |
4960 | ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1; | |
32dfdf8b | 4961 | memcpy(ptr, &addr->host_used->port, sizeof(addr->host_used->port)); |
059ec3d9 | 4962 | ptr += sizeof(addr->host_used->port); |
783b385f JH |
4963 | |
4964 | /* DNS lookup status */ | |
4965 | *ptr++ = addr->host_used->dnssec==DS_YES ? '2' | |
4966 | : addr->host_used->dnssec==DS_NO ? '1' : '0'; | |
4967 | ||
059ec3d9 | 4968 | } |
bd21a787 | 4969 | rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4970 | } |
4971 | ||
aeaf5db3 | 4972 | /* Local interface address/port */ |
895fbaf2 JH |
4973 | #ifdef EXPERIMENTAL_DSN_INFO |
4974 | if (sending_ip_address) | |
4975 | #else | |
6c6d6e48 | 4976 | if (LOGGING(incoming_interface) && sending_ip_address) |
895fbaf2 | 4977 | #endif |
aeaf5db3 | 4978 | { |
e6d2a989 JH |
4979 | uschar * ptr; |
4980 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1; | |
4981 | ptr += sprintf(CS ptr, "%d", sending_port) + 1; | |
aeaf5db3 JH |
4982 | rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer); |
4983 | } | |
4984 | ||
059ec3d9 PH |
4985 | /* Add termination flag, close the pipe, and that's it. The character |
4986 | after 'Z' indicates whether continue_transport is now NULL or not. | |
4987 | A change from non-NULL to NULL indicates a problem with a continuing | |
4988 | connection. */ | |
4989 | ||
d6c82d7b | 4990 | big_buffer[0] = continue_transport ? '1' : '0'; |
bd21a787 | 4991 | rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1); |
f1e894f3 | 4992 | (void)close(fd); |
059ec3d9 PH |
4993 | exit(EXIT_SUCCESS); |
4994 | } | |
4995 | ||
4996 | /* Back in the mainline: close the unwanted half of the pipe. */ | |
4997 | ||
f1e894f3 | 4998 | (void)close(pfd[pipe_write]); |
059ec3d9 | 4999 | |
57cc2785 JH |
5000 | /* If we have a connection still open from a verify stage (lazy-close) |
5001 | release its TLS library context (if any) as responsibility was passed to | |
5002 | the delivery child process. */ | |
5003 | ||
74f1a423 | 5004 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 JH |
5005 | { |
5006 | #ifdef SUPPORT_TLS | |
74f1a423 JH |
5007 | if (cutthrough.is_tls) |
5008 | tls_close(cutthrough.cctx.tls_ctx, TLS_NO_SHUTDOWN); | |
57cc2785 | 5009 | #endif |
74f1a423 | 5010 | (void) close(cutthrough.cctx.sock); |
57cc2785 JH |
5011 | release_cutthrough_connection(US"passed to transport proc"); |
5012 | } | |
5013 | ||
059ec3d9 PH |
5014 | /* Fork failed; defer with error message */ |
5015 | ||
2cee425a | 5016 | if (pid == -1) |
059ec3d9 | 5017 | { |
f1e894f3 | 5018 | (void)close(pfd[pipe_read]); |
d6c82d7b JH |
5019 | panicmsg = string_sprintf("fork failed for remote delivery to %s: %s", |
5020 | addr->domain, strerror(errno)); | |
fa41615d | 5021 | goto enq_continue; |
059ec3d9 PH |
5022 | } |
5023 | ||
5024 | /* Fork succeeded; increment the count, and remember relevant data for | |
5025 | when the process finishes. */ | |
5026 | ||
5027 | parcount++; | |
5028 | parlist[poffset].addrlist = parlist[poffset].addr = addr; | |
5029 | parlist[poffset].pid = pid; | |
5030 | parlist[poffset].fd = pfd[pipe_read]; | |
5031 | parlist[poffset].done = FALSE; | |
5032 | parlist[poffset].msg = NULL; | |
5033 | parlist[poffset].return_path = return_path; | |
5034 | ||
5035 | /* If the process we've just started is sending a message down an existing | |
5036 | channel, wait for it now. This ensures that only one such process runs at | |
5037 | once, whatever the value of remote_max parallel. Otherwise, we might try to | |
5038 | send two or more messages simultaneously down the same channel. This could | |
5039 | happen if there are different domains that include the same host in otherwise | |
5040 | different host lists. | |
5041 | ||
5042 | Also, if the transport closes down the channel, this information gets back | |
5043 | (continue_transport gets set to NULL) before we consider any other addresses | |
5044 | in this message. */ | |
5045 | ||
d6c82d7b | 5046 | if (continue_transport) par_reduce(0, fallback); |
059ec3d9 PH |
5047 | |
5048 | /* Otherwise, if we are running in the test harness, wait a bit, to let the | |
5049 | newly created process get going before we create another process. This should | |
5050 | ensure repeatability in the tests. We only need to wait a tad. */ | |
5051 | ||
8768d548 | 5052 | else if (f.running_in_test_harness) millisleep(500); |
d6c82d7b JH |
5053 | |
5054 | continue; | |
5055 | ||
fa41615d JH |
5056 | enq_continue: |
5057 | if (serialize_key) enq_end(serialize_key); | |
d6c82d7b JH |
5058 | panic_continue: |
5059 | remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback); | |
5060 | continue; | |
059ec3d9 PH |
5061 | } |
5062 | ||
5063 | /* Reached the end of the list of addresses. Wait for all the subprocesses that | |
5064 | are still running and post-process their addresses. */ | |
5065 | ||
5066 | par_reduce(0, fallback); | |
5067 | return TRUE; | |
5068 | } | |
5069 | ||
5070 | ||
5071 | ||
5072 | ||
5073 | /************************************************* | |
5074 | * Split an address into local part and domain * | |
5075 | *************************************************/ | |
5076 | ||
5077 | /* This function initializes an address for routing by splitting it up into a | |
5078 | local part and a domain. The local part is set up twice - once in its original | |
5079 | casing, and once in lower case, and it is dequoted. We also do the "percent | |
5080 | hack" for configured domains. This may lead to a DEFER result if a lookup | |
5081 | defers. When a percent-hacking takes place, we insert a copy of the original | |
5082 | address as a new parent of this address, as if we have had a redirection. | |
5083 | ||
5084 | Argument: | |
5085 | addr points to an addr_item block containing the address | |
5086 | ||
5087 | Returns: OK | |
5088 | DEFER - could not determine if domain is %-hackable | |
5089 | */ | |
5090 | ||
5091 | int | |
fb5908b1 | 5092 | deliver_split_address(address_item * addr) |
059ec3d9 | 5093 | { |
fb5908b1 JH |
5094 | uschar * address = addr->address; |
5095 | uschar * domain; | |
5096 | uschar * t; | |
5097 | int len; | |
059ec3d9 | 5098 | |
fb5908b1 JH |
5099 | if (!(domain = Ustrrchr(address, '@'))) |
5100 | return DEFER; /* should always have a domain, but just in case... */ | |
5101 | ||
5102 | len = domain - address; | |
059ec3d9 PH |
5103 | addr->domain = string_copylc(domain+1); /* Domains are always caseless */ |
5104 | ||
5105 | /* The implication in the RFCs (though I can't say I've seen it spelled out | |
5106 | explicitly) is that quoting should be removed from local parts at the point | |
5107 | where they are locally interpreted. [The new draft "821" is more explicit on | |
5108 | this, Jan 1999.] We know the syntax is valid, so this can be done by simply | |
5109 | removing quoting backslashes and any unquoted doublequotes. */ | |
5110 | ||
5111 | t = addr->cc_local_part = store_get(len+1); | |
5112 | while(len-- > 0) | |
5113 | { | |
fb5908b1 | 5114 | int c = *address++; |
059ec3d9 PH |
5115 | if (c == '\"') continue; |
5116 | if (c == '\\') | |
5117 | { | |
5118 | *t++ = *address++; | |
5119 | len--; | |
5120 | } | |
5121 | else *t++ = c; | |
5122 | } | |
5123 | *t = 0; | |
5124 | ||
5125 | /* We do the percent hack only for those domains that are listed in | |
5126 | percent_hack_domains. A loop is required, to copy with multiple %-hacks. */ | |
5127 | ||
d6c82d7b | 5128 | if (percent_hack_domains) |
059ec3d9 PH |
5129 | { |
5130 | int rc; | |
5131 | uschar *new_address = NULL; | |
5132 | uschar *local_part = addr->cc_local_part; | |
5133 | ||
5134 | deliver_domain = addr->domain; /* set $domain */ | |
5135 | ||
d6c82d7b JH |
5136 | while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0, |
5137 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) | |
5138 | == OK | |
5139 | && (t = Ustrrchr(local_part, '%')) != NULL | |
5140 | ) | |
059ec3d9 PH |
5141 | { |
5142 | new_address = string_copy(local_part); | |
5143 | new_address[t - local_part] = '@'; | |
5144 | deliver_domain = string_copylc(t+1); | |
5145 | local_part = string_copyn(local_part, t - local_part); | |
5146 | } | |
5147 | ||
5148 | if (rc == DEFER) return DEFER; /* lookup deferred */ | |
5149 | ||
5150 | /* If hackery happened, set up new parent and alter the current address. */ | |
5151 | ||
d6c82d7b | 5152 | if (new_address) |
059ec3d9 PH |
5153 | { |
5154 | address_item *new_parent = store_get(sizeof(address_item)); | |
5155 | *new_parent = *addr; | |
5156 | addr->parent = new_parent; | |
82f90600 | 5157 | new_parent->child_count = 1; |
059ec3d9 PH |
5158 | addr->address = new_address; |
5159 | addr->unique = string_copy(new_address); | |
5160 | addr->domain = deliver_domain; | |
5161 | addr->cc_local_part = local_part; | |
5162 | DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n", | |
5163 | addr->address); | |
5164 | } | |
5165 | } | |
5166 | ||
5167 | /* Create the lowercased version of the final local part, and make that the | |
5168 | default one to be used. */ | |
5169 | ||
5170 | addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part); | |
5171 | return OK; | |
5172 | } | |
5173 | ||
5174 | ||
5175 | ||
5176 | ||
5177 | /************************************************* | |
5178 | * Get next error message text * | |
5179 | *************************************************/ | |
5180 | ||
5181 | /* If f is not NULL, read the next "paragraph", from a customized error message | |
5182 | text file, terminated by a line containing ****, and expand it. | |
5183 | ||
5184 | Arguments: | |
5185 | f NULL or a file to read from | |
5186 | which string indicating which string (for errors) | |
5187 | ||
5188 | Returns: NULL or an expanded string | |
5189 | */ | |
5190 | ||
5191 | static uschar * | |
5192 | next_emf(FILE *f, uschar *which) | |
5193 | { | |
acec9514 JH |
5194 | uschar *yield; |
5195 | gstring * para; | |
059ec3d9 PH |
5196 | uschar buffer[256]; |
5197 | ||
d6c82d7b | 5198 | if (!f) return NULL; |
059ec3d9 | 5199 | |
d6c82d7b JH |
5200 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
5201 | return NULL; | |
059ec3d9 | 5202 | |
acec9514 | 5203 | para = string_get(256); |
059ec3d9 PH |
5204 | for (;;) |
5205 | { | |
acec9514 | 5206 | para = string_cat(para, buffer); |
d6c82d7b JH |
5207 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
5208 | break; | |
059ec3d9 | 5209 | } |
acec9514 | 5210 | if ((yield = expand_string(string_from_gstring(para)))) |
d6c82d7b | 5211 | return yield; |
059ec3d9 PH |
5212 | |
5213 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from " | |
5214 | "bounce_message_file or warn_message_file (%s): %s", which, | |
5215 | expand_string_message); | |
5216 | return NULL; | |
5217 | } | |
5218 | ||
5219 | ||
5220 | ||
5221 | ||
5222 | /************************************************* | |
5223 | * Close down a passed transport channel * | |
5224 | *************************************************/ | |
5225 | ||
5226 | /* This function is called when a passed transport channel cannot be used. | |
5227 | It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED | |
5228 | so that the function call can be the argument of a "return" statement. | |
5229 | ||
5230 | Arguments: None | |
5231 | Returns: DELIVER_NOT_ATTEMPTED | |
5232 | */ | |
5233 | ||
5234 | static int | |
5235 | continue_closedown(void) | |
5236 | { | |
d6c82d7b | 5237 | if (continue_transport) |
d7978c0f | 5238 | for (transport_instance * t = transports; t; t = t->next) |
059ec3d9 PH |
5239 | if (Ustrcmp(t->name, continue_transport) == 0) |
5240 | { | |
d6c82d7b | 5241 | if (t->info->closedown) (t->info->closedown)(t); |
059ec3d9 PH |
5242 | break; |
5243 | } | |
059ec3d9 PH |
5244 | return DELIVER_NOT_ATTEMPTED; |
5245 | } | |
5246 | ||
5247 | ||
5248 | ||
5249 | ||
5250 | /************************************************* | |
5251 | * Print address information * | |
5252 | *************************************************/ | |
5253 | ||
5254 | /* This function is called to output an address, or information about an | |
5255 | address, for bounce or defer messages. If the hide_child flag is set, all we | |
5256 | output is the original ancestor address. | |
5257 | ||
5258 | Arguments: | |
5259 | addr points to the address | |
5260 | f the FILE to print to | |
5261 | si an initial string | |
5262 | sc a continuation string for before "generated" | |
5263 | se an end string | |
5264 | ||
5265 | Returns: TRUE if the address is not hidden | |
5266 | */ | |
5267 | ||
5268 | static BOOL | |
5269 | print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc, | |
5270 | uschar *se) | |
5271 | { | |
5272 | BOOL yield = TRUE; | |
5273 | uschar *printed = US""; | |
5274 | address_item *ancestor = addr; | |
d6c82d7b | 5275 | while (ancestor->parent) ancestor = ancestor->parent; |
059ec3d9 PH |
5276 | |
5277 | fprintf(f, "%s", CS si); | |
5278 | ||
d6c82d7b | 5279 | if (addr->parent && testflag(addr, af_hide_child)) |
059ec3d9 PH |
5280 | { |
5281 | printed = US"an undisclosed address"; | |
5282 | yield = FALSE; | |
5283 | } | |
d6c82d7b | 5284 | else if (!testflag(addr, af_pfr) || !addr->parent) |
059ec3d9 PH |
5285 | printed = addr->address; |
5286 | ||
5287 | else | |
5288 | { | |
5289 | uschar *s = addr->address; | |
5290 | uschar *ss; | |
5291 | ||
5292 | if (addr->address[0] == '>') { ss = US"mail"; s++; } | |
5293 | else if (addr->address[0] == '|') ss = US"pipe"; | |
5294 | else ss = US"save"; | |
5295 | ||
5296 | fprintf(f, "%s to %s%sgenerated by ", ss, s, sc); | |
5297 | printed = addr->parent->address; | |
5298 | } | |
5299 | ||
5300 | fprintf(f, "%s", CS string_printing(printed)); | |
5301 | ||
5302 | if (ancestor != addr) | |
5303 | { | |
d6c82d7b JH |
5304 | uschar *original = ancestor->onetime_parent; |
5305 | if (!original) original= ancestor->address; | |
059ec3d9 PH |
5306 | if (strcmpic(original, printed) != 0) |
5307 | fprintf(f, "%s(%sgenerated from %s)", sc, | |
d6c82d7b | 5308 | ancestor != addr->parent ? "ultimately " : "", |
059ec3d9 PH |
5309 | string_printing(original)); |
5310 | } | |
5311 | ||
c562fd30 JH |
5312 | if (addr->host_used) |
5313 | fprintf(f, "\n host %s [%s]", | |
5314 | addr->host_used->name, addr->host_used->address); | |
5315 | ||
059ec3d9 PH |
5316 | fprintf(f, "%s", CS se); |
5317 | return yield; | |
5318 | } | |
5319 | ||
5320 | ||
5321 | ||
5322 | ||
5323 | ||
059ec3d9 PH |
5324 | /************************************************* |
5325 | * Print error for an address * | |
5326 | *************************************************/ | |
5327 | ||
5328 | /* This function is called to print the error information out of an address for | |
5329 | a bounce or a warning message. It tries to format the message reasonably by | |
5330 | introducing newlines. All lines are indented by 4; the initial printing | |
5331 | position must be set before calling. | |
5332 | ||
447d236c | 5333 | This function used always to print the error. Nowadays we want to restrict it |
75def545 PH |
5334 | to cases such as LMTP/SMTP errors from a remote host, and errors from :fail: |
5335 | and filter "fail". We no longer pass other information willy-nilly in bounce | |
5336 | and warning messages. Text in user_message is always output; text in message | |
5337 | only if the af_pass_message flag is set. | |
447d236c | 5338 | |
059ec3d9 | 5339 | Arguments: |
447d236c | 5340 | addr the address |
059ec3d9 | 5341 | f the FILE to print on |
75def545 | 5342 | t some leading text |
059ec3d9 PH |
5343 | |
5344 | Returns: nothing | |
5345 | */ | |
5346 | ||
5347 | static void | |
447d236c | 5348 | print_address_error(address_item *addr, FILE *f, uschar *t) |
059ec3d9 | 5349 | { |
447d236c | 5350 | int count = Ustrlen(t); |
de6f74f2 | 5351 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
447d236c | 5352 | |
0ba0ee97 JH |
5353 | if (!s && !(s = addr->user_message)) |
5354 | return; | |
447d236c PH |
5355 | |
5356 | fprintf(f, "\n %s", t); | |
5357 | ||
0ba0ee97 | 5358 | while (*s) |
447d236c PH |
5359 | if (*s == '\\' && s[1] == 'n') |
5360 | { | |
5361 | fprintf(f, "\n "); | |
5362 | s += 2; | |
5363 | count = 0; | |
5364 | } | |
5365 | else | |
059ec3d9 | 5366 | { |
447d236c PH |
5367 | fputc(*s, f); |
5368 | count++; | |
5369 | if (*s++ == ':' && isspace(*s) && count > 45) | |
059ec3d9 | 5370 | { |
447d236c | 5371 | fprintf(f, "\n "); /* sic (because space follows) */ |
059ec3d9 PH |
5372 | count = 0; |
5373 | } | |
059ec3d9 | 5374 | } |
059ec3d9 PH |
5375 | } |
5376 | ||
5377 | ||
21bc4865 WB |
5378 | /*********************************************************** |
5379 | * Print Diagnostic-Code for an address * | |
5380 | ************************************************************/ | |
5381 | ||
5382 | /* This function is called to print the error information out of an address for | |
5383 | a bounce or a warning message. It tries to format the message reasonably as | |
5384 | required by RFC 3461 by adding a space after each newline | |
5385 | ||
ca410e79 WB |
5386 | it uses the same logic as print_address_error() above. if af_pass_message is true |
5387 | and addr->message is set it uses the remote host answer. if not addr->user_message | |
5388 | is used instead if available. | |
21bc4865 WB |
5389 | |
5390 | Arguments: | |
5391 | addr the address | |
5392 | f the FILE to print on | |
5393 | ||
5394 | Returns: nothing | |
5395 | */ | |
5396 | ||
5397 | static void | |
5398 | print_dsn_diagnostic_code(const address_item *addr, FILE *f) | |
5399 | { | |
ca410e79 | 5400 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
21bc4865 | 5401 | |
ca410e79 WB |
5402 | /* af_pass_message and addr->message set ? print remote host answer */ |
5403 | if (s) | |
5404 | { | |
5405 | DEBUG(D_deliver) | |
5406 | debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message); | |
447d236c | 5407 | |
ca410e79 WB |
5408 | /* search first ": ". we assume to find the remote-MTA answer there */ |
5409 | if (!(s = Ustrstr(addr->message, ": "))) | |
5410 | return; /* not found, bail out */ | |
5411 | s += 2; /* skip ": " */ | |
5412 | fprintf(f, "Diagnostic-Code: smtp; "); | |
5413 | } | |
ca410e79 | 5414 | /* no message available. do nothing */ |
9031f51a | 5415 | else return; |
21bc4865 | 5416 | |
21bc4865 WB |
5417 | while (*s) |
5418 | if (*s == '\\' && s[1] == 'n') | |
5419 | { | |
5420 | fputs("\n ", f); /* as defined in RFC 3461 */ | |
5421 | s += 2; | |
5422 | } | |
5423 | else | |
5424 | fputc(*s++, f); | |
5425 | ||
5426 | fputc('\n', f); | |
5427 | } | |
447d236c PH |
5428 | |
5429 | ||
d7174846 PH |
5430 | /************************************************* |
5431 | * Check list of addresses for duplication * | |
5432 | *************************************************/ | |
5433 | ||
5434 | /* This function was introduced when the test for duplicate addresses that are | |
5435 | not pipes, files, or autoreplies was moved from the middle of routing to when | |
5436 | routing was complete. That was to fix obscure cases when the routing history | |
dbcef0ea PH |
5437 | affects the subsequent routing of identical addresses. This function is called |
5438 | after routing, to check that the final routed addresses are not duplicates. | |
d7174846 | 5439 | |
dbcef0ea PH |
5440 | If we detect a duplicate, we remember what it is a duplicate of. Note that |
5441 | pipe, file, and autoreply de-duplication is handled during routing, so we must | |
5442 | leave such "addresses" alone here, as otherwise they will incorrectly be | |
5443 | discarded. | |
d7174846 PH |
5444 | |
5445 | Argument: address of list anchor | |
5446 | Returns: nothing | |
5447 | */ | |
5448 | ||
5449 | static void | |
5450 | do_duplicate_check(address_item **anchor) | |
5451 | { | |
5452 | address_item *addr; | |
d6c82d7b | 5453 | while ((addr = *anchor)) |
d7174846 PH |
5454 | { |
5455 | tree_node *tnode; | |
5456 | if (testflag(addr, af_pfr)) | |
5457 | { | |
5458 | anchor = &(addr->next); | |
5459 | } | |
d6c82d7b | 5460 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
d7174846 PH |
5461 | { |
5462 | DEBUG(D_deliver|D_route) | |
5463 | debug_printf("%s is a duplicate address: discarded\n", addr->unique); | |
5464 | *anchor = addr->next; | |
5465 | addr->dupof = tnode->data.ptr; | |
5466 | addr->next = addr_duplicate; | |
5467 | addr_duplicate = addr; | |
5468 | } | |
5469 | else | |
5470 | { | |
5471 | tree_add_duplicate(addr->unique, addr); | |
5472 | anchor = &(addr->next); | |
5473 | } | |
5474 | } | |
5475 | } | |
5476 | ||
5477 | ||
5478 | ||
059ec3d9 PH |
5479 | |
5480 | /************************************************* | |
5481 | * Deliver one message * | |
5482 | *************************************************/ | |
5483 | ||
5484 | /* This is the function which is called when a message is to be delivered. It | |
5485 | is passed the id of the message. It is possible that the message no longer | |
5486 | exists, if some other process has delivered it, and it is also possible that | |
5487 | the message is being worked on by another process, in which case the data file | |
5488 | will be locked. | |
5489 | ||
5490 | If no delivery is attempted for any of the above reasons, the function returns | |
5491 | DELIVER_NOT_ATTEMPTED. | |
5492 | ||
5493 | If the give_up flag is set true, do not attempt any deliveries, but instead | |
5494 | fail all outstanding addresses and return the message to the sender (or | |
5495 | whoever). | |
5496 | ||
5497 | A delivery operation has a process all to itself; we never deliver more than | |
5498 | one message in the same process. Therefore we needn't worry too much about | |
5499 | store leakage. | |
5500 | ||
92b0827a JH |
5501 | Liable to be called as root. |
5502 | ||
059ec3d9 PH |
5503 | Arguments: |
5504 | id the id of the message to be delivered | |
5505 | forced TRUE if delivery was forced by an administrator; this overrides | |
5506 | retry delays and causes a delivery to be tried regardless | |
5507 | give_up TRUE if an administrator has requested that delivery attempts | |
5508 | be abandoned | |
5509 | ||
5510 | Returns: When the global variable mua_wrapper is FALSE: | |
5511 | DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made | |
5512 | DELIVER_NOT_ATTEMPTED otherwise (see comment above) | |
5513 | When the global variable mua_wrapper is TRUE: | |
5514 | DELIVER_MUA_SUCCEEDED if delivery succeeded | |
5515 | DELIVER_MUA_FAILED if delivery failed | |
5516 | DELIVER_NOT_ATTEMPTED if not attempted (should not occur) | |
5517 | */ | |
5518 | ||
5519 | int | |
5520 | deliver_message(uschar *id, BOOL forced, BOOL give_up) | |
5521 | { | |
5522 | int i, rc; | |
5523 | int final_yield = DELIVER_ATTEMPTED_NORMAL; | |
5524 | time_t now = time(NULL); | |
5525 | address_item *addr_last = NULL; | |
5526 | uschar *filter_message = NULL; | |
059ec3d9 PH |
5527 | int process_recipients = RECIP_ACCEPT; |
5528 | open_db dbblock; | |
5529 | open_db *dbm_file; | |
faa05a93 | 5530 | extern int acl_where; |
059ec3d9 | 5531 | |
d6c82d7b JH |
5532 | uschar *info = queue_run_pid == (pid_t)0 |
5533 | ? string_sprintf("delivering %s", id) | |
5534 | : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid); | |
059ec3d9 PH |
5535 | |
5536 | /* If the D_process_info bit is on, set_process_info() will output debugging | |
5537 | information. If not, we want to show this initial information if D_deliver or | |
5538 | D_queue_run is set or in verbose mode. */ | |
5539 | ||
5540 | set_process_info("%s", info); | |
5541 | ||
d6c82d7b JH |
5542 | if ( !(debug_selector & D_process_info) |
5543 | && (debug_selector & (D_deliver|D_queue_run|D_v)) | |
5544 | ) | |
059ec3d9 PH |
5545 | debug_printf("%s\n", info); |
5546 | ||
5547 | /* Ensure that we catch any subprocesses that are created. Although Exim | |
5548 | sets SIG_DFL as its initial default, some routes through the code end up | |
5549 | here with it set to SIG_IGN - cases where a non-synchronous delivery process | |
5550 | has been forked, but no re-exec has been done. We use sigaction rather than | |
5551 | plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be | |
5552 | sure it is turned off. (There was a problem on AIX with this.) */ | |
5553 | ||
5554 | #ifdef SA_NOCLDWAIT | |
5555 | { | |
5556 | struct sigaction act; | |
5557 | act.sa_handler = SIG_DFL; | |
5558 | sigemptyset(&(act.sa_mask)); | |
5559 | act.sa_flags = 0; | |
5560 | sigaction(SIGCHLD, &act, NULL); | |
5561 | } | |
5562 | #else | |
5563 | signal(SIGCHLD, SIG_DFL); | |
5564 | #endif | |
5565 | ||
5566 | /* Make the forcing flag available for routers and transports, set up the | |
5567 | global message id field, and initialize the count for returned files and the | |
5568 | message size. This use of strcpy() is OK because the length id is checked when | |
5569 | it is obtained from a command line (the -M or -q options), and otherwise it is | |
5570 | known to be a valid message id. */ | |
5571 | ||
e30f4f43 JH |
5572 | if (id != message_id) |
5573 | Ustrcpy(message_id, id); | |
8768d548 | 5574 | f.deliver_force = forced; |
059ec3d9 PH |
5575 | return_count = 0; |
5576 | message_size = 0; | |
5577 | ||
5578 | /* Initialize some flags */ | |
5579 | ||
5580 | update_spool = FALSE; | |
5581 | remove_journal = TRUE; | |
5582 | ||
faa05a93 JH |
5583 | /* Set a known context for any ACLs we call via expansions */ |
5584 | acl_where = ACL_WHERE_DELIVERY; | |
5585 | ||
059ec3d9 PH |
5586 | /* Reset the random number generator, so that if several delivery processes are |
5587 | started from a queue runner that has already used random numbers (for sorting), | |
5588 | they don't all get the same sequence. */ | |
5589 | ||
5590 | random_seed = 0; | |
5591 | ||
5592 | /* Open and lock the message's data file. Exim locks on this one because the | |
5593 | header file may get replaced as it is re-written during the delivery process. | |
5594 | Any failures cause messages to be written to the log, except for missing files | |
5595 | while queue running - another process probably completed delivery. As part of | |
5596 | opening the data file, message_subdir gets set. */ | |
5597 | ||
789f8a4f | 5598 | if ((deliver_datafile = spool_open_datafile(id)) < 0) |
059ec3d9 PH |
5599 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5600 | ||
5601 | /* The value of message_size at this point has been set to the data length, | |
5602 | plus one for the blank line that notionally precedes the data. */ | |
5603 | ||
5604 | /* Now read the contents of the header file, which will set up the headers in | |
5605 | store, and also the list of recipients and the tree of non-recipients and | |
5606 | assorted flags. It updates message_size. If there is a reading or format error, | |
5607 | give up; if the message has been around for sufficiently long, remove it. */ | |
5608 | ||
059ec3d9 | 5609 | { |
41313d92 JH |
5610 | uschar * spoolname = string_sprintf("%s-H", id); |
5611 | if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK) | |
059ec3d9 | 5612 | { |
41313d92 JH |
5613 | if (errno == ERRNO_SPOOLFORMAT) |
5614 | { | |
5615 | struct stat statbuf; | |
5616 | if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""), | |
5617 | &statbuf) == 0) | |
5618 | log_write(0, LOG_MAIN, "Format error in spool file %s: " | |
5619 | "size=" OFF_T_FMT, spoolname, statbuf.st_size); | |
5620 | else | |
5621 | log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname); | |
5622 | } | |
5623 | else | |
5624 | log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname, | |
5625 | strerror(errno)); | |
059ec3d9 | 5626 | |
41313d92 JH |
5627 | /* If we managed to read the envelope data, received_time contains the |
5628 | time the message was received. Otherwise, we can calculate it from the | |
5629 | message id. */ | |
059ec3d9 | 5630 | |
41313d92 JH |
5631 | if (rc != spool_read_hdrerror) |
5632 | { | |
32dfdf8b JH |
5633 | received_time.tv_sec = received_time.tv_usec = 0; |
5634 | /*XXX subsec precision?*/ | |
41313d92 | 5635 | for (i = 0; i < 6; i++) |
32dfdf8b | 5636 | received_time.tv_sec = received_time.tv_sec * BASE_62 + tab62[id[i] - '0']; |
41313d92 | 5637 | } |
059ec3d9 | 5638 | |
41313d92 | 5639 | /* If we've had this malformed message too long, sling it. */ |
059ec3d9 | 5640 | |
32dfdf8b | 5641 | if (now - received_time.tv_sec > keep_malformed) |
41313d92 JH |
5642 | { |
5643 | Uunlink(spool_fname(US"msglog", message_subdir, id, US"")); | |
5644 | Uunlink(spool_fname(US"input", message_subdir, id, US"-D")); | |
5645 | Uunlink(spool_fname(US"input", message_subdir, id, US"-H")); | |
5646 | Uunlink(spool_fname(US"input", message_subdir, id, US"-J")); | |
5647 | log_write(0, LOG_MAIN, "Message removed because older than %s", | |
5648 | readconf_printtime(keep_malformed)); | |
5649 | } | |
059ec3d9 | 5650 | |
41313d92 JH |
5651 | (void)close(deliver_datafile); |
5652 | deliver_datafile = -1; | |
5653 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5654 | } | |
059ec3d9 PH |
5655 | } |
5656 | ||
5657 | /* The spool header file has been read. Look to see if there is an existing | |
5658 | journal file for this message. If there is, it means that a previous delivery | |
5659 | attempt crashed (program or host) before it could update the spool header file. | |
5660 | Read the list of delivered addresses from the journal and add them to the | |
5661 | nonrecipients tree. Then update the spool file. We can leave the journal in | |
5662 | existence, as it will get further successful deliveries added to it in this | |
5663 | run, and it will be deleted if this function gets to its end successfully. | |
5664 | Otherwise it might be needed again. */ | |
5665 | ||
059ec3d9 | 5666 | { |
41313d92 | 5667 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
92b0827a | 5668 | FILE * jread; |
41313d92 | 5669 | |
92b0827a JH |
5670 | if ( (journal_fd = Uopen(fname, O_RDWR|O_APPEND |
5671 | #ifdef O_CLOEXEC | |
5672 | | O_CLOEXEC | |
5673 | #endif | |
5674 | #ifdef O_NOFOLLOW | |
5675 | | O_NOFOLLOW | |
5676 | #endif | |
5677 | , SPOOL_MODE)) >= 0 | |
5678 | && lseek(journal_fd, 0, SEEK_SET) == 0 | |
5679 | && (jread = fdopen(journal_fd, "rb")) | |
5680 | ) | |
059ec3d9 | 5681 | { |
41313d92 JH |
5682 | while (Ufgets(big_buffer, big_buffer_size, jread)) |
5683 | { | |
5684 | int n = Ustrlen(big_buffer); | |
5685 | big_buffer[n-1] = 0; | |
5686 | tree_add_nonrecipient(big_buffer); | |
5687 | DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from " | |
5688 | "journal file\n", big_buffer); | |
5689 | } | |
92b0827a | 5690 | rewind(jread); |
c0741086 JH |
5691 | if ((journal_fd = dup(fileno(jread))) < 0) |
5692 | journal_fd = fileno(jread); | |
5693 | else | |
5694 | (void) fclose(jread); /* Try to not leak the FILE resource */ | |
5695 | ||
41313d92 JH |
5696 | /* Panic-dies on error */ |
5697 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
5698 | } | |
5699 | else if (errno != ENOENT) | |
5700 | { | |
5701 | log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: " | |
5702 | "%s", strerror(errno)); | |
5703 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
059ec3d9 | 5704 | } |
059ec3d9 | 5705 | |
41313d92 | 5706 | /* A null recipients list indicates some kind of disaster. */ |
059ec3d9 | 5707 | |
41313d92 JH |
5708 | if (!recipients_list) |
5709 | { | |
5710 | (void)close(deliver_datafile); | |
5711 | deliver_datafile = -1; | |
5712 | log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname); | |
5713 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5714 | } | |
059ec3d9 PH |
5715 | } |
5716 | ||
5717 | ||
5718 | /* Handle a message that is frozen. There are a number of different things that | |
5719 | can happen, but in the default situation, unless forced, no delivery is | |
5720 | attempted. */ | |
5721 | ||
8768d548 | 5722 | if (f.deliver_freeze) |
059ec3d9 | 5723 | { |
a7538db1 | 5724 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
059ec3d9 PH |
5725 | /* Moving to another directory removes the message from Exim's view. Other |
5726 | tools must be used to deal with it. Logging of this action happens in | |
5727 | spool_move_message() and its subfunctions. */ | |
5728 | ||
d6c82d7b JH |
5729 | if ( move_frozen_messages |
5730 | && spool_move_message(id, message_subdir, US"", US"F") | |
5731 | ) | |
059ec3d9 | 5732 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
a7538db1 | 5733 | #endif |
059ec3d9 PH |
5734 | |
5735 | /* For all frozen messages (bounces or not), timeout_frozen_after sets the | |
5736 | maximum time to keep messages that are frozen. Thaw if we reach it, with a | |
5737 | flag causing all recipients to be failed. The time is the age of the | |
5738 | message, not the time since freezing. */ | |
5739 | ||
5740 | if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after) | |
5741 | { | |
5742 | log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after"); | |
5743 | process_recipients = RECIP_FAIL_TIMEOUT; | |
5744 | } | |
5745 | ||
5746 | /* For bounce messages (and others with no sender), thaw if the error message | |
5747 | ignore timer is exceeded. The message will be discarded if this delivery | |
5748 | fails. */ | |
5749 | ||
10c50704 | 5750 | else if (!*sender_address && message_age >= ignore_bounce_errors_after) |
059ec3d9 | 5751 | log_write(0, LOG_MAIN, "Unfrozen by errmsg timer"); |
059ec3d9 | 5752 | |
ef213c3b PH |
5753 | /* If this is a bounce message, or there's no auto thaw, or we haven't |
5754 | reached the auto thaw time yet, and this delivery is not forced by an admin | |
5755 | user, do not attempt delivery of this message. Note that forced is set for | |
5756 | continuing messages down the same channel, in order to skip load checking and | |
5757 | ignore hold domains, but we don't want unfreezing in that case. */ | |
059ec3d9 PH |
5758 | |
5759 | else | |
5760 | { | |
d6c82d7b JH |
5761 | if ( ( sender_address[0] == 0 |
5762 | || auto_thaw <= 0 | |
5763 | || now <= deliver_frozen_at + auto_thaw | |
5764 | ) | |
8768d548 JH |
5765 | && ( !forced || !f.deliver_force_thaw |
5766 | || !f.admin_user || continue_hostname | |
d6c82d7b | 5767 | ) ) |
059ec3d9 | 5768 | { |
f1e894f3 | 5769 | (void)close(deliver_datafile); |
059ec3d9 PH |
5770 | deliver_datafile = -1; |
5771 | log_write(L_skip_delivery, LOG_MAIN, "Message is frozen"); | |
5772 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5773 | } | |
5774 | ||
5775 | /* If delivery was forced (by an admin user), assume a manual thaw. | |
5776 | Otherwise it's an auto thaw. */ | |
5777 | ||
5778 | if (forced) | |
5779 | { | |
8768d548 | 5780 | f.deliver_manual_thaw = TRUE; |
059ec3d9 PH |
5781 | log_write(0, LOG_MAIN, "Unfrozen by forced delivery"); |
5782 | } | |
5783 | else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw"); | |
5784 | } | |
5785 | ||
5786 | /* We get here if any of the rules for unfreezing have triggered. */ | |
5787 | ||
8768d548 | 5788 | f.deliver_freeze = FALSE; |
059ec3d9 PH |
5789 | update_spool = TRUE; |
5790 | } | |
5791 | ||
5792 | ||
5793 | /* Open the message log file if we are using them. This records details of | |
5794 | deliveries, deferments, and failures for the benefit of the mail administrator. | |
5795 | The log is not used by exim itself to track the progress of a message; that is | |
5796 | done by rewriting the header spool file. */ | |
5797 | ||
5798 | if (message_logs) | |
5799 | { | |
41313d92 JH |
5800 | uschar * fname = spool_fname(US"msglog", message_subdir, id, US""); |
5801 | uschar * error; | |
059ec3d9 PH |
5802 | int fd; |
5803 | ||
41313d92 | 5804 | if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0) |
059ec3d9 PH |
5805 | { |
5806 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error, | |
41313d92 | 5807 | fname, strerror(errno)); |
059ec3d9 PH |
5808 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5809 | } | |
5810 | ||
5811 | /* Make a C stream out of it. */ | |
5812 | ||
d6c82d7b | 5813 | if (!(message_log = fdopen(fd, "a"))) |
059ec3d9 PH |
5814 | { |
5815 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s", | |
41313d92 | 5816 | fname, strerror(errno)); |
059ec3d9 PH |
5817 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5818 | } | |
5819 | } | |
5820 | ||
5821 | ||
5822 | /* If asked to give up on a message, log who did it, and set the action for all | |
5823 | the addresses. */ | |
5824 | ||
5825 | if (give_up) | |
5826 | { | |
5827 | struct passwd *pw = getpwuid(real_uid); | |
d6c82d7b JH |
5828 | log_write(0, LOG_MAIN, "cancelled by %s", |
5829 | pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid)); | |
059ec3d9 PH |
5830 | process_recipients = RECIP_FAIL; |
5831 | } | |
5832 | ||
5833 | /* Otherwise, if there are too many Received: headers, fail all recipients. */ | |
5834 | ||
5835 | else if (received_count > received_headers_max) | |
5836 | process_recipients = RECIP_FAIL_LOOP; | |
5837 | ||
5838 | /* Otherwise, if a system-wide, address-independent message filter is | |
5839 | specified, run it now, except in the case when we are failing all recipients as | |
5840 | a result of timeout_frozen_after. If the system filter yields "delivered", then | |
5841 | ignore the true recipients of the message. Failure of the filter file is | |
5842 | logged, and the delivery attempt fails. */ | |
5843 | ||
d6c82d7b | 5844 | else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT) |
059ec3d9 PH |
5845 | { |
5846 | int rc; | |
5847 | int filtertype; | |
5848 | ugid_block ugid; | |
5849 | redirect_block redirect; | |
5850 | ||
5851 | if (system_filter_uid_set) | |
5852 | { | |
5853 | ugid.uid = system_filter_uid; | |
5854 | ugid.gid = system_filter_gid; | |
5855 | ugid.uid_set = ugid.gid_set = TRUE; | |
5856 | } | |
5857 | else | |
059ec3d9 | 5858 | ugid.uid_set = ugid.gid_set = FALSE; |
059ec3d9 PH |
5859 | |
5860 | return_path = sender_address; | |
8768d548 JH |
5861 | f.enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */ |
5862 | f.system_filtering = TRUE; | |
059ec3d9 PH |
5863 | |
5864 | /* Any error in the filter file causes a delivery to be abandoned. */ | |
5865 | ||
5866 | redirect.string = system_filter; | |
5867 | redirect.isfile = TRUE; | |
5868 | redirect.check_owner = redirect.check_group = FALSE; | |
5869 | redirect.owners = NULL; | |
5870 | redirect.owngroups = NULL; | |
5871 | redirect.pw = NULL; | |
5872 | redirect.modemask = 0; | |
5873 | ||
5874 | DEBUG(D_deliver|D_filter) debug_printf("running system filter\n"); | |
5875 | ||
5876 | rc = rda_interpret( | |
5877 | &redirect, /* Where the data is */ | |
5878 | RDO_DEFER | /* Turn on all the enabling options */ | |
5879 | RDO_FAIL | /* Leave off all the disabling options */ | |
5880 | RDO_FILTER | | |
5881 | RDO_FREEZE | | |
5882 | RDO_REALLOG | | |
5883 | RDO_REWRITE, | |
5884 | NULL, /* No :include: restriction (not used in filter) */ | |
5885 | NULL, /* No sieve vacation directory (not sieve!) */ | |
efd9a422 | 5886 | NULL, /* No sieve enotify mailto owner (not sieve!) */ |
e4a89c47 PH |
5887 | NULL, /* No sieve user address (not sieve!) */ |
5888 | NULL, /* No sieve subaddress (not sieve!) */ | |
059ec3d9 PH |
5889 | &ugid, /* uid/gid data */ |
5890 | &addr_new, /* Where to hang generated addresses */ | |
5891 | &filter_message, /* Where to put error message */ | |
5892 | NULL, /* Don't skip syntax errors */ | |
5893 | &filtertype, /* Will always be set to FILTER_EXIM for this call */ | |
5894 | US"system filter"); /* For error messages */ | |
5895 | ||
5896 | DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc); | |
5897 | ||
5898 | if (rc == FF_ERROR || rc == FF_NONEXIST) | |
5899 | { | |
f1e894f3 | 5900 | (void)close(deliver_datafile); |
059ec3d9 PH |
5901 | deliver_datafile = -1; |
5902 | log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s", | |
5903 | string_printing(filter_message)); | |
5904 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5905 | } | |
5906 | ||
5907 | /* Reset things. If the filter message is an empty string, which can happen | |
5908 | for a filter "fail" or "freeze" command with no text, reset it to NULL. */ | |
5909 | ||
8768d548 JH |
5910 | f.system_filtering = FALSE; |
5911 | f.enable_dollar_recipients = FALSE; | |
d6c82d7b | 5912 | if (filter_message && filter_message[0] == 0) filter_message = NULL; |
059ec3d9 PH |
5913 | |
5914 | /* Save the values of the system filter variables so that user filters | |
5915 | can use them. */ | |
5916 | ||
5917 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); | |
5918 | ||
5919 | /* The filter can request that delivery of the original addresses be | |
5920 | deferred. */ | |
5921 | ||
5922 | if (rc == FF_DEFER) | |
5923 | { | |
5924 | process_recipients = RECIP_DEFER; | |
5925 | deliver_msglog("Delivery deferred by system filter\n"); | |
5926 | log_write(0, LOG_MAIN, "Delivery deferred by system filter"); | |
5927 | } | |
5928 | ||
5929 | /* The filter can request that a message be frozen, but this does not | |
5930 | take place if the message has been manually thawed. In that case, we must | |
5931 | unset "delivered", which is forced by the "freeze" command to make -bF | |
5932 | work properly. */ | |
5933 | ||
8768d548 | 5934 | else if (rc == FF_FREEZE && !f.deliver_manual_thaw) |
059ec3d9 | 5935 | { |
8768d548 | 5936 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
5937 | deliver_frozen_at = time(NULL); |
5938 | process_recipients = RECIP_DEFER; | |
5939 | frozen_info = string_sprintf(" by the system filter%s%s", | |
d6c82d7b JH |
5940 | filter_message ? US": " : US"", |
5941 | filter_message ? filter_message : US""); | |
059ec3d9 PH |
5942 | } |
5943 | ||
5944 | /* The filter can request that a message be failed. The error message may be | |
5945 | quite long - it is sent back to the sender in the bounce - but we don't want | |
5946 | to fill up the log with repetitions of it. If it starts with << then the text | |
5947 | between << and >> is written to the log, with the rest left for the bounce | |
5948 | message. */ | |
5949 | ||
5950 | else if (rc == FF_FAIL) | |
5951 | { | |
5952 | uschar *colon = US""; | |
5953 | uschar *logmsg = US""; | |
5954 | int loglen = 0; | |
5955 | ||
5956 | process_recipients = RECIP_FAIL_FILTER; | |
5957 | ||
d6c82d7b | 5958 | if (filter_message) |
059ec3d9 PH |
5959 | { |
5960 | uschar *logend; | |
5961 | colon = US": "; | |
d6c82d7b JH |
5962 | if ( filter_message[0] == '<' |
5963 | && filter_message[1] == '<' | |
5964 | && (logend = Ustrstr(filter_message, ">>")) | |
5965 | ) | |
059ec3d9 PH |
5966 | { |
5967 | logmsg = filter_message + 2; | |
5968 | loglen = logend - logmsg; | |
5969 | filter_message = logend + 2; | |
5970 | if (filter_message[0] == 0) filter_message = NULL; | |
5971 | } | |
5972 | else | |
5973 | { | |
5974 | logmsg = filter_message; | |
5975 | loglen = Ustrlen(filter_message); | |
5976 | } | |
5977 | } | |
5978 | ||
5979 | log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen, | |
5980 | logmsg); | |
5981 | } | |
5982 | ||
5983 | /* Delivery can be restricted only to those recipients (if any) that the | |
5984 | filter specified. */ | |
5985 | ||
5986 | else if (rc == FF_DELIVERED) | |
5987 | { | |
5988 | process_recipients = RECIP_IGNORE; | |
d6c82d7b | 5989 | if (addr_new) |
059ec3d9 | 5990 | log_write(0, LOG_MAIN, "original recipients ignored (system filter)"); |
d6c82d7b JH |
5991 | else |
5992 | log_write(0, LOG_MAIN, "=> discarded (system filter)"); | |
059ec3d9 PH |
5993 | } |
5994 | ||
5995 | /* If any new addresses were created by the filter, fake up a "parent" | |
5996 | for them. This is necessary for pipes, etc., which are expected to have | |
5997 | parents, and it also gives some sensible logging for others. Allow | |
5998 | pipes, files, and autoreplies, and run them as the filter uid if set, | |
5999 | otherwise as the current uid. */ | |
6000 | ||
d6c82d7b | 6001 | if (addr_new) |
059ec3d9 PH |
6002 | { |
6003 | int uid = (system_filter_uid_set)? system_filter_uid : geteuid(); | |
6004 | int gid = (system_filter_gid_set)? system_filter_gid : getegid(); | |
6005 | ||
6006 | /* The text "system-filter" is tested in transport_set_up_command() and in | |
6007 | set_up_shell_command() in the pipe transport, to enable them to permit | |
6008 | $recipients, so don't change it here without also changing it there. */ | |
6009 | ||
6010 | address_item *p = addr_new; | |
6011 | address_item *parent = deliver_make_addr(US"system-filter", FALSE); | |
6012 | ||
6013 | parent->domain = string_copylc(qualify_domain_recipient); | |
6014 | parent->local_part = US"system-filter"; | |
6015 | ||
6016 | /* As part of this loop, we arrange for addr_last to end up pointing | |
6017 | at the final address. This is used if we go on to add addresses for the | |
6018 | original recipients. */ | |
6019 | ||
d6c82d7b | 6020 | while (p) |
059ec3d9 | 6021 | { |
82f90600 | 6022 | if (parent->child_count == USHRT_MAX) |
4362ff0d | 6023 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more " |
82f90600 | 6024 | "than %d delivery addresses", USHRT_MAX); |
059ec3d9 PH |
6025 | parent->child_count++; |
6026 | p->parent = parent; | |
6027 | ||
6028 | if (testflag(p, af_pfr)) | |
6029 | { | |
6030 | uschar *tpname; | |
6031 | uschar *type; | |
6032 | p->uid = uid; | |
6033 | p->gid = gid; | |
7eb0e5d2 JH |
6034 | setflag(p, af_uid_set); |
6035 | setflag(p, af_gid_set); | |
6036 | setflag(p, af_allow_file); | |
6037 | setflag(p, af_allow_pipe); | |
6038 | setflag(p, af_allow_reply); | |
059ec3d9 PH |
6039 | |
6040 | /* Find the name of the system filter's appropriate pfr transport */ | |
6041 | ||
6042 | if (p->address[0] == '|') | |
6043 | { | |
6044 | type = US"pipe"; | |
6045 | tpname = system_filter_pipe_transport; | |
6046 | address_pipe = p->address; | |
6047 | } | |
6048 | else if (p->address[0] == '>') | |
6049 | { | |
6050 | type = US"reply"; | |
6051 | tpname = system_filter_reply_transport; | |
6052 | } | |
6053 | else | |
6054 | { | |
6055 | if (p->address[Ustrlen(p->address)-1] == '/') | |
6056 | { | |
6057 | type = US"directory"; | |
6058 | tpname = system_filter_directory_transport; | |
6059 | } | |
6060 | else | |
6061 | { | |
6062 | type = US"file"; | |
6063 | tpname = system_filter_file_transport; | |
6064 | } | |
6065 | address_file = p->address; | |
6066 | } | |
6067 | ||
6068 | /* Now find the actual transport, first expanding the name. We have | |
6069 | set address_file or address_pipe above. */ | |
6070 | ||
d6c82d7b | 6071 | if (tpname) |
059ec3d9 PH |
6072 | { |
6073 | uschar *tmp = expand_string(tpname); | |
6074 | address_file = address_pipe = NULL; | |
d6c82d7b | 6075 | if (!tmp) |
059ec3d9 PH |
6076 | p->message = string_sprintf("failed to expand \"%s\" as a " |
6077 | "system filter transport name", tpname); | |
6078 | tpname = tmp; | |
6079 | } | |
6080 | else | |
059ec3d9 PH |
6081 | p->message = string_sprintf("system_filter_%s_transport is unset", |
6082 | type); | |
059ec3d9 | 6083 | |
d6c82d7b | 6084 | if (tpname) |
059ec3d9 PH |
6085 | { |
6086 | transport_instance *tp; | |
d6c82d7b | 6087 | for (tp = transports; tp; tp = tp->next) |
059ec3d9 PH |
6088 | if (Ustrcmp(tp->name, tpname) == 0) |
6089 | { | |
6090 | p->transport = tp; | |
6091 | break; | |
6092 | } | |
d6c82d7b | 6093 | if (!tp) |
059ec3d9 PH |
6094 | p->message = string_sprintf("failed to find \"%s\" transport " |
6095 | "for system filter delivery", tpname); | |
6096 | } | |
6097 | ||
6098 | /* If we couldn't set up a transport, defer the delivery, putting the | |
6099 | error on the panic log as well as the main log. */ | |
6100 | ||
d6c82d7b | 6101 | if (!p->transport) |
059ec3d9 PH |
6102 | { |
6103 | address_item *badp = p; | |
6104 | p = p->next; | |
d6c82d7b | 6105 | if (!addr_last) addr_new = p; else addr_last->next = p; |
059ec3d9 | 6106 | badp->local_part = badp->address; /* Needed for log line */ |
ba936fb8 | 6107 | post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6108 | continue; |
6109 | } | |
6110 | } /* End of pfr handling */ | |
6111 | ||
6112 | /* Either a non-pfr delivery, or we found a transport */ | |
6113 | ||
6114 | DEBUG(D_deliver|D_filter) | |
6115 | debug_printf("system filter added %s\n", p->address); | |
6116 | ||
6117 | addr_last = p; | |
6118 | p = p->next; | |
6119 | } /* Loop through all addr_new addresses */ | |
6120 | } | |
6121 | } | |
6122 | ||
6123 | ||
6124 | /* Scan the recipients list, and for every one that is not in the non- | |
6125 | recipients tree, add an addr item to the chain of new addresses. If the pno | |
6126 | value is non-negative, we must set the onetime parent from it. This which | |
6127 | points to the relevant entry in the recipients list. | |
6128 | ||
6129 | This processing can be altered by the setting of the process_recipients | |
6130 | variable, which is changed if recipients are to be ignored, failed, or | |
6131 | deferred. This can happen as a result of system filter activity, or if the -Mg | |
6132 | option is used to fail all of them. | |
6133 | ||
6134 | Duplicate addresses are handled later by a different tree structure; we can't | |
6135 | just extend the non-recipients tree, because that will be re-written to the | |
6136 | spool if the message is deferred, and in any case there are casing | |
6137 | complications for local addresses. */ | |
6138 | ||
6139 | if (process_recipients != RECIP_IGNORE) | |
059ec3d9 | 6140 | for (i = 0; i < recipients_count; i++) |
d6c82d7b | 6141 | if (!tree_search(tree_nonrecipients, recipients_list[i].address)) |
059ec3d9 PH |
6142 | { |
6143 | recipient_item *r = recipients_list + i; | |
6144 | address_item *new = deliver_make_addr(r->address, FALSE); | |
d43cbe25 | 6145 | new->prop.errors_address = r->errors_to; |
8c5d388a | 6146 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
6147 | if ((new->prop.utf8_msg = message_smtputf8)) |
6148 | { | |
6149 | new->prop.utf8_downcvt = message_utf8_downconvert == 1; | |
6150 | new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1; | |
0ec7e948 JH |
6151 | DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n", |
6152 | new->prop.utf8_downcvt ? "yes" | |
6153 | : new->prop.utf8_downcvt_maybe ? "ifneeded" | |
6154 | : "no"); | |
3c8b3577 | 6155 | } |
7ade712c | 6156 | #endif |
059ec3d9 PH |
6157 | |
6158 | if (r->pno >= 0) | |
6159 | new->onetime_parent = recipients_list[r->pno].address; | |
6160 | ||
94431adb | 6161 | /* If DSN support is enabled, set the dsn flags and the original receipt |
6c1c3d1d WB |
6162 | to be passed on to other DSN enabled MTAs */ |
6163 | new->dsn_flags = r->dsn_flags & rf_dsnflags; | |
6164 | new->dsn_orcpt = r->orcpt; | |
f923454a | 6165 | DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n", |
d011368a | 6166 | new->dsn_orcpt ? new->dsn_orcpt : US"", new->dsn_flags); |
6c1c3d1d | 6167 | |
059ec3d9 PH |
6168 | switch (process_recipients) |
6169 | { | |
6170 | /* RECIP_DEFER is set when a system filter freezes a message. */ | |
6171 | ||
6172 | case RECIP_DEFER: | |
1afce5bb MK |
6173 | new->next = addr_defer; |
6174 | addr_defer = new; | |
6175 | break; | |
059ec3d9 PH |
6176 | |
6177 | ||
6178 | /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail" | |
6179 | command. */ | |
6180 | ||
6181 | case RECIP_FAIL_FILTER: | |
1afce5bb MK |
6182 | new->message = |
6183 | filter_message ? filter_message : US"delivery cancelled"; | |
6184 | setflag(new, af_pass_message); | |
6185 | goto RECIP_QUEUE_FAILED; /* below */ | |
059ec3d9 PH |
6186 | |
6187 | ||
6188 | /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older | |
6189 | than the value in timeout_frozen_after. Treat non-bounce messages | |
6190 | similarly to -Mg; for bounce messages we just want to discard, so | |
6191 | don't put the address on the failed list. The timeout has already | |
6192 | been logged. */ | |
6193 | ||
6194 | case RECIP_FAIL_TIMEOUT: | |
1afce5bb MK |
6195 | new->message = US"delivery cancelled; message timed out"; |
6196 | goto RECIP_QUEUE_FAILED; /* below */ | |
059ec3d9 PH |
6197 | |
6198 | ||
6199 | /* RECIP_FAIL is set when -Mg has been used. */ | |
6200 | ||
6201 | case RECIP_FAIL: | |
1afce5bb MK |
6202 | new->message = US"delivery cancelled by administrator"; |
6203 | /* Fall through */ | |
059ec3d9 PH |
6204 | |
6205 | /* Common code for the failure cases above. If this is not a bounce | |
6206 | message, put the address on the failed list so that it is used to | |
6207 | create a bounce. Otherwise do nothing - this just discards the address. | |
6208 | The incident has already been logged. */ | |
6209 | ||
6210 | RECIP_QUEUE_FAILED: | |
1afce5bb MK |
6211 | if (sender_address[0]) |
6212 | { | |
6213 | new->next = addr_failed; | |
6214 | addr_failed = new; | |
6215 | } | |
059ec3d9 PH |
6216 | break; |
6217 | ||
6218 | ||
6219 | /* RECIP_FAIL_LOOP is set when there are too many Received: headers | |
6220 | in the message. Process each address as a routing failure; if this | |
6221 | is a bounce message, it will get frozen. */ | |
6222 | ||
6223 | case RECIP_FAIL_LOOP: | |
1afce5bb MK |
6224 | new->message = US"Too many \"Received\" headers - suspected mail loop"; |
6225 | post_process_one(new, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); | |
6226 | break; | |
059ec3d9 PH |
6227 | |
6228 | ||
6229 | /* Value should be RECIP_ACCEPT; take this as the safe default. */ | |
6230 | ||
6231 | default: | |
1afce5bb MK |
6232 | if (!addr_new) addr_new = new; else addr_last->next = new; |
6233 | addr_last = new; | |
6234 | break; | |
059ec3d9 | 6235 | } |
14a465c3 | 6236 | |
0cbf2b82 | 6237 | #ifndef DISABLE_EVENT |
14a465c3 JH |
6238 | if (process_recipients != RECIP_ACCEPT) |
6239 | { | |
6240 | uschar * save_local = deliver_localpart; | |
55414b25 | 6241 | const uschar * save_domain = deliver_domain; |
7ea1237c MK |
6242 | uschar * addr = new->address, * errmsg = NULL; |
6243 | int start, end, dom; | |
14a465c3 | 6244 | |
7ea1237c MK |
6245 | if (!parse_extract_address(addr, &errmsg, &start, &end, &dom, TRUE)) |
6246 | log_write(0, LOG_MAIN|LOG_PANIC, | |
6247 | "failed to parse address '%.100s': %s\n", addr, errmsg); | |
6248 | else | |
6249 | { | |
6250 | deliver_localpart = | |
6251 | string_copyn(addr+start, dom ? (dom-1) - start : end - start); | |
6252 | deliver_domain = dom ? CUS string_copyn(addr+dom, end - dom) : CUS""; | |
14a465c3 | 6253 | |
7ea1237c | 6254 | event_raise(event_action, US"msg:fail:internal", new->message); |
14a465c3 | 6255 | |
7ea1237c MK |
6256 | deliver_localpart = save_local; |
6257 | deliver_domain = save_domain; | |
6258 | } | |
14a465c3 JH |
6259 | } |
6260 | #endif | |
059ec3d9 | 6261 | } |
059ec3d9 PH |
6262 | |
6263 | DEBUG(D_deliver) | |
6264 | { | |
059ec3d9 | 6265 | debug_printf("Delivery address list:\n"); |
d7978c0f | 6266 | for (address_item * p = addr_new; p; p = p->next) |
d6c82d7b JH |
6267 | debug_printf(" %s %s\n", p->address, |
6268 | p->onetime_parent ? p->onetime_parent : US""); | |
059ec3d9 PH |
6269 | } |
6270 | ||
6271 | /* Set up the buffers used for copying over the file when delivering. */ | |
6272 | ||
6273 | deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE); | |
6274 | deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE); | |
6275 | ||
6276 | ||
6277 | ||
6278 | /* Until there are no more new addresses, handle each one as follows: | |
6279 | ||
6280 | . If this is a generated address (indicated by the presence of a parent | |
6281 | pointer) then check to see whether it is a pipe, file, or autoreply, and | |
6282 | if so, handle it directly here. The router that produced the address will | |
6283 | have set the allow flags into the address, and also set the uid/gid required. | |
6284 | Having the routers generate new addresses and then checking them here at | |
6285 | the outer level is tidier than making each router do the checking, and | |
6286 | means that routers don't need access to the failed address queue. | |
6287 | ||
6288 | . Break up the address into local part and domain, and make lowercased | |
6289 | versions of these strings. We also make unquoted versions of the local part. | |
6290 | ||
6291 | . Handle the percent hack for those domains for which it is valid. | |
6292 | ||
6293 | . For child addresses, determine if any of the parents have the same address. | |
6294 | If so, generate a different string for previous delivery checking. Without | |
6295 | this code, if the address spqr generates spqr via a forward or alias file, | |
6296 | delivery of the generated spqr stops further attempts at the top level spqr, | |
6297 | which is not what is wanted - it may have generated other addresses. | |
6298 | ||
6299 | . Check on the retry database to see if routing was previously deferred, but | |
6300 | only if in a queue run. Addresses that are to be routed are put on the | |
6301 | addr_route chain. Addresses that are to be deferred are put on the | |
6302 | addr_defer chain. We do all the checking first, so as not to keep the | |
6303 | retry database open any longer than necessary. | |
6304 | ||
6305 | . Now we run the addresses through the routers. A router may put the address | |
6306 | on either the addr_local or the addr_remote chain for local or remote | |
6307 | delivery, respectively, or put it on the addr_failed chain if it is | |
6308 | undeliveable, or it may generate child addresses and put them on the | |
6309 | addr_new chain, or it may defer an address. All the chain anchors are | |
6310 | passed as arguments so that the routers can be called for verification | |
6311 | purposes as well. | |
6312 | ||
6313 | . If new addresses have been generated by the routers, da capo. | |
6314 | */ | |
6315 | ||
8768d548 | 6316 | f.header_rewritten = FALSE; /* No headers rewritten yet */ |
d6c82d7b | 6317 | while (addr_new) /* Loop until all addresses dealt with */ |
059ec3d9 PH |
6318 | { |
6319 | address_item *addr, *parent; | |
059ec3d9 PH |
6320 | |
6321 | /* Failure to open the retry database is treated the same as if it does | |
6322 | not exist. In both cases, dbm_file is NULL. */ | |
6323 | ||
d6c82d7b | 6324 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE))) |
059ec3d9 PH |
6325 | DEBUG(D_deliver|D_retry|D_route|D_hints_lookup) |
6326 | debug_printf("no retry data available\n"); | |
059ec3d9 PH |
6327 | |
6328 | /* Scan the current batch of new addresses, to handle pipes, files and | |
6329 | autoreplies, and determine which others are ready for routing. */ | |
6330 | ||
d6c82d7b | 6331 | while (addr_new) |
059ec3d9 PH |
6332 | { |
6333 | int rc; | |
6334 | uschar *p; | |
6335 | tree_node *tnode; | |
6336 | dbdata_retry *domain_retry_record; | |
6337 | dbdata_retry *address_retry_record; | |
6338 | ||
6339 | addr = addr_new; | |
6340 | addr_new = addr->next; | |
6341 | ||
6342 | DEBUG(D_deliver|D_retry|D_route) | |
6343 | { | |
6344 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); | |
6345 | debug_printf("Considering: %s\n", addr->address); | |
6346 | } | |
6347 | ||
6348 | /* Handle generated address that is a pipe or a file or an autoreply. */ | |
6349 | ||
6350 | if (testflag(addr, af_pfr)) | |
6351 | { | |
424a1c63 PH |
6352 | /* If an autoreply in a filter could not generate a syntactically valid |
6353 | address, give up forthwith. Set af_ignore_error so that we don't try to | |
6354 | generate a bounce. */ | |
6355 | ||
6356 | if (testflag(addr, af_bad_reply)) | |
6357 | { | |
6358 | addr->basic_errno = ERRNO_BADADDRESS2; | |
6359 | addr->local_part = addr->address; | |
6360 | addr->message = | |
6361 | US"filter autoreply generated syntactically invalid recipient"; | |
7eb0e5d2 | 6362 | addr->prop.ignore_error = TRUE; |
ba936fb8 | 6363 | (void) post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
424a1c63 PH |
6364 | continue; /* with the next new address */ |
6365 | } | |
059ec3d9 PH |
6366 | |
6367 | /* If two different users specify delivery to the same pipe or file or | |
6368 | autoreply, there should be two different deliveries, so build a unique | |
6369 | string that incorporates the original address, and use this for | |
6370 | duplicate testing and recording delivery, and also for retrying. */ | |
6371 | ||
6372 | addr->unique = | |
424a1c63 PH |
6373 | string_sprintf("%s:%s", addr->address, addr->parent->unique + |
6374 | (testflag(addr->parent, af_homonym)? 3:0)); | |
059ec3d9 PH |
6375 | |
6376 | addr->address_retry_key = addr->domain_retry_key = | |
6377 | string_sprintf("T:%s", addr->unique); | |
6378 | ||
6379 | /* If a filter file specifies two deliveries to the same pipe or file, | |
6380 | we want to de-duplicate, but this is probably not wanted for two mail | |
6381 | commands to the same address, where probably both should be delivered. | |
6382 | So, we have to invent a different unique string in that case. Just | |
6383 | keep piling '>' characters on the front. */ | |
6384 | ||
6385 | if (addr->address[0] == '>') | |
6386 | { | |
d6c82d7b | 6387 | while (tree_search(tree_duplicates, addr->unique)) |
059ec3d9 PH |
6388 | addr->unique = string_sprintf(">%s", addr->unique); |
6389 | } | |
6390 | ||
d6c82d7b | 6391 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
059ec3d9 PH |
6392 | { |
6393 | DEBUG(D_deliver|D_route) | |
6394 | debug_printf("%s is a duplicate address: discarded\n", addr->address); | |
6395 | addr->dupof = tnode->data.ptr; | |
6396 | addr->next = addr_duplicate; | |
6397 | addr_duplicate = addr; | |
6398 | continue; | |
6399 | } | |
6400 | ||
6401 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6402 | ||
6403 | /* Check for previous delivery */ | |
6404 | ||
d6c82d7b | 6405 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6406 | { |
6407 | DEBUG(D_deliver|D_route) | |
6408 | debug_printf("%s was previously delivered: discarded\n", addr->address); | |
6409 | child_done(addr, tod_stamp(tod_log)); | |
6410 | continue; | |
6411 | } | |
6412 | ||
6413 | /* Save for checking future duplicates */ | |
6414 | ||
6415 | tree_add_duplicate(addr->unique, addr); | |
6416 | ||
6417 | /* Set local part and domain */ | |
6418 | ||
6419 | addr->local_part = addr->address; | |
6420 | addr->domain = addr->parent->domain; | |
6421 | ||
6422 | /* Ensure that the delivery is permitted. */ | |
6423 | ||
6424 | if (testflag(addr, af_file)) | |
6425 | { | |
6426 | if (!testflag(addr, af_allow_file)) | |
6427 | { | |
6428 | addr->basic_errno = ERRNO_FORBIDFILE; | |
6429 | addr->message = US"delivery to file forbidden"; | |
ba936fb8 | 6430 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6431 | continue; /* with the next new address */ |
6432 | } | |
6433 | } | |
6434 | else if (addr->address[0] == '|') | |
6435 | { | |
6436 | if (!testflag(addr, af_allow_pipe)) | |
6437 | { | |
6438 | addr->basic_errno = ERRNO_FORBIDPIPE; | |
6439 | addr->message = US"delivery to pipe forbidden"; | |
ba936fb8 | 6440 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6441 | continue; /* with the next new address */ |
6442 | } | |
6443 | } | |
6444 | else if (!testflag(addr, af_allow_reply)) | |
6445 | { | |
6446 | addr->basic_errno = ERRNO_FORBIDREPLY; | |
6447 | addr->message = US"autoreply forbidden"; | |
ba936fb8 | 6448 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6449 | continue; /* with the next new address */ |
6450 | } | |
6451 | ||
6452 | /* If the errno field is already set to BADTRANSPORT, it indicates | |
6453 | failure to expand a transport string, or find the associated transport, | |
6454 | or an unset transport when one is required. Leave this test till now so | |
6455 | that the forbid errors are given in preference. */ | |
6456 | ||
6457 | if (addr->basic_errno == ERRNO_BADTRANSPORT) | |
6458 | { | |
ba936fb8 | 6459 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6460 | continue; |
6461 | } | |
6462 | ||
6463 | /* Treat /dev/null as a special case and abandon the delivery. This | |
6464 | avoids having to specify a uid on the transport just for this case. | |
6465 | Arrange for the transport name to be logged as "**bypassed**". */ | |
6466 | ||
6467 | if (Ustrcmp(addr->address, "/dev/null") == 0) | |
6468 | { | |
6469 | uschar *save = addr->transport->name; | |
6470 | addr->transport->name = US"**bypassed**"; | |
ba936fb8 | 6471 | (void)post_process_one(addr, OK, LOG_MAIN, EXIM_DTYPE_TRANSPORT, '='); |
059ec3d9 PH |
6472 | addr->transport->name = save; |
6473 | continue; /* with the next new address */ | |
6474 | } | |
6475 | ||
6476 | /* Pipe, file, or autoreply delivery is to go ahead as a normal local | |
6477 | delivery. */ | |
6478 | ||
6479 | DEBUG(D_deliver|D_route) | |
6480 | debug_printf("queued for %s transport\n", addr->transport->name); | |
6481 | addr->next = addr_local; | |
6482 | addr_local = addr; | |
6483 | continue; /* with the next new address */ | |
6484 | } | |
6485 | ||
6486 | /* Handle normal addresses. First, split up into local part and domain, | |
6487 | handling the %-hack if necessary. There is the possibility of a defer from | |
6488 | a lookup in percent_hack_domains. */ | |
6489 | ||
6490 | if ((rc = deliver_split_address(addr)) == DEFER) | |
6491 | { | |
6492 | addr->message = US"cannot check percent_hack_domains"; | |
6493 | addr->basic_errno = ERRNO_LISTDEFER; | |
ba936fb8 | 6494 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
059ec3d9 PH |
6495 | continue; |
6496 | } | |
6497 | ||
6498 | /* Check to see if the domain is held. If so, proceed only if the | |
6499 | delivery was forced by hand. */ | |
6500 | ||
6501 | deliver_domain = addr->domain; /* set $domain */ | |
d6c82d7b JH |
6502 | if ( !forced && hold_domains |
6503 | && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0, | |
059ec3d9 | 6504 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, |
d6c82d7b JH |
6505 | NULL)) != FAIL |
6506 | ) | |
059ec3d9 PH |
6507 | { |
6508 | if (rc == DEFER) | |
6509 | { | |
6510 | addr->message = US"hold_domains lookup deferred"; | |
6511 | addr->basic_errno = ERRNO_LISTDEFER; | |
6512 | } | |
6513 | else | |
6514 | { | |
6515 | addr->message = US"domain is held"; | |
6516 | addr->basic_errno = ERRNO_HELD; | |
6517 | } | |
ba936fb8 | 6518 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
059ec3d9 PH |
6519 | continue; |
6520 | } | |
6521 | ||
6522 | /* Now we can check for duplicates and previously delivered addresses. In | |
6523 | order to do this, we have to generate a "unique" value for each address, | |
6524 | because there may be identical actual addresses in a line of descendents. | |
6525 | The "unique" field is initialized to the same value as the "address" field, | |
6526 | but gets changed here to cope with identically-named descendents. */ | |
6527 | ||
d6c82d7b | 6528 | for (parent = addr->parent; parent; parent = parent->parent) |
059ec3d9 PH |
6529 | if (strcmpic(addr->address, parent->address) == 0) break; |
6530 | ||
6531 | /* If there's an ancestor with the same name, set the homonym flag. This | |
6532 | influences how deliveries are recorded. Then add a prefix on the front of | |
6533 | the unique address. We use \n\ where n starts at 0 and increases each time. | |
6534 | It is unlikely to pass 9, but if it does, it may look odd but will still | |
6535 | work. This means that siblings or cousins with the same names are treated | |
6536 | as duplicates, which is what we want. */ | |
6537 | ||
d6c82d7b | 6538 | if (parent) |
059ec3d9 PH |
6539 | { |
6540 | setflag(addr, af_homonym); | |
6541 | if (parent->unique[0] != '\\') | |
6542 | addr->unique = string_sprintf("\\0\\%s", addr->address); | |
6543 | else | |
6544 | addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1, | |
6545 | addr->address); | |
6546 | } | |
6547 | ||
6548 | /* Ensure that the domain in the unique field is lower cased, because | |
6549 | domains are always handled caselessly. */ | |
6550 | ||
6551 | p = Ustrrchr(addr->unique, '@'); | |
6552 | while (*p != 0) { *p = tolower(*p); p++; } | |
6553 | ||
6554 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6555 | ||
d6c82d7b | 6556 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6557 | { |
6558 | DEBUG(D_deliver|D_route) | |
6559 | debug_printf("%s was previously delivered: discarded\n", addr->unique); | |
6560 | child_done(addr, tod_stamp(tod_log)); | |
6561 | continue; | |
6562 | } | |
6563 | ||
059ec3d9 | 6564 | /* Get the routing retry status, saving the two retry keys (with and |
48c7f9e2 PH |
6565 | without the local part) for subsequent use. If there is no retry record for |
6566 | the standard address routing retry key, we look for the same key with the | |
6567 | sender attached, because this form is used by the smtp transport after a | |
6568 | 4xx response to RCPT when address_retry_include_sender is true. */ | |
059ec3d9 PH |
6569 | |
6570 | addr->domain_retry_key = string_sprintf("R:%s", addr->domain); | |
6571 | addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part, | |
6572 | addr->domain); | |
6573 | ||
d6c82d7b | 6574 | if (dbm_file) |
059ec3d9 PH |
6575 | { |
6576 | domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key); | |
d6c82d7b JH |
6577 | if ( domain_retry_record |
6578 | && now - domain_retry_record->time_stamp > retry_data_expire | |
6579 | ) | |
de6f74f2 JH |
6580 | { |
6581 | DEBUG(D_deliver|D_retry) | |
6582 | debug_printf("domain retry record present but expired\n"); | |
48c7f9e2 | 6583 | domain_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6584 | } |
059ec3d9 PH |
6585 | |
6586 | address_retry_record = dbfn_read(dbm_file, addr->address_retry_key); | |
d6c82d7b JH |
6587 | if ( address_retry_record |
6588 | && now - address_retry_record->time_stamp > retry_data_expire | |
6589 | ) | |
de6f74f2 JH |
6590 | { |
6591 | DEBUG(D_deliver|D_retry) | |
6592 | debug_printf("address retry record present but expired\n"); | |
48c7f9e2 | 6593 | address_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6594 | } |
48c7f9e2 | 6595 | |
d6c82d7b | 6596 | if (!address_retry_record) |
48c7f9e2 | 6597 | { |
09945f1e | 6598 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
48c7f9e2 PH |
6599 | sender_address); |
6600 | address_retry_record = dbfn_read(dbm_file, altkey); | |
d6c82d7b JH |
6601 | if ( address_retry_record |
6602 | && now - address_retry_record->time_stamp > retry_data_expire) | |
de6f74f2 JH |
6603 | { |
6604 | DEBUG(D_deliver|D_retry) | |
6605 | debug_printf("address<sender> retry record present but expired\n"); | |
48c7f9e2 | 6606 | address_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6607 | } |
48c7f9e2 | 6608 | } |
059ec3d9 | 6609 | } |
d6c82d7b JH |
6610 | else |
6611 | domain_retry_record = address_retry_record = NULL; | |
059ec3d9 PH |
6612 | |
6613 | DEBUG(D_deliver|D_retry) | |
6614 | { | |
d6c82d7b | 6615 | if (!domain_retry_record) |
de6f74f2 JH |
6616 | debug_printf("no domain retry record\n"); |
6617 | else | |
6618 | debug_printf("have domain retry record; next_try = now%+d\n", | |
6619 | f.running_in_test_harness ? 0 : | |
6620 | (int)(domain_retry_record->next_try - now)); | |
6621 | ||
d6c82d7b | 6622 | if (!address_retry_record) |
de6f74f2 JH |
6623 | debug_printf("no address retry record\n"); |
6624 | else | |
6625 | debug_printf("have address retry record; next_try = now%+d\n", | |
6626 | f.running_in_test_harness ? 0 : | |
6627 | (int)(address_retry_record->next_try - now)); | |
059ec3d9 PH |
6628 | } |
6629 | ||
6630 | /* If we are sending a message down an existing SMTP connection, we must | |
6631 | assume that the message which created the connection managed to route | |
6632 | an address to that connection. We do not want to run the risk of taking | |
6633 | a long time over routing here, because if we do, the server at the other | |
6634 | end of the connection may time it out. This is especially true for messages | |
6635 | with lots of addresses. For this kind of delivery, queue_running is not | |
6636 | set, so we would normally route all addresses. We take a pragmatic approach | |
6637 | and defer routing any addresses that have any kind of domain retry record. | |
6638 | That is, we don't even look at their retry times. It doesn't matter if this | |
6639 | doesn't work occasionally. This is all just an optimization, after all. | |
6640 | ||
6641 | The reason for not doing the same for address retries is that they normally | |
6642 | arise from 4xx responses, not DNS timeouts. */ | |
6643 | ||
d6c82d7b | 6644 | if (continue_hostname && domain_retry_record) |
059ec3d9 PH |
6645 | { |
6646 | addr->message = US"reusing SMTP connection skips previous routing defer"; | |
6647 | addr->basic_errno = ERRNO_RRETRY; | |
ba936fb8 | 6648 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
de6f74f2 JH |
6649 | |
6650 | addr->message = domain_retry_record->text; | |
6651 | setflag(addr, af_pass_message); | |
059ec3d9 PH |
6652 | } |
6653 | ||
f6c332bd PH |
6654 | /* If we are in a queue run, defer routing unless there is no retry data or |
6655 | we've passed the next retry time, or this message is forced. In other | |
6656 | words, ignore retry data when not in a queue run. | |
6657 | ||
6658 | However, if the domain retry time has expired, always allow the routing | |
6659 | attempt. If it fails again, the address will be failed. This ensures that | |
059ec3d9 PH |
6660 | each address is routed at least once, even after long-term routing |
6661 | failures. | |
6662 | ||
6663 | If there is an address retry, check that too; just wait for the next | |
6664 | retry time. This helps with the case when the temporary error on the | |
6665 | address was really message-specific rather than address specific, since | |
f6c332bd PH |
6666 | it allows other messages through. |
6667 | ||
6668 | We also wait for the next retry time if this is a message sent down an | |
6669 | existing SMTP connection (even though that will be forced). Otherwise there | |
6670 | will be far too many attempts for an address that gets a 4xx error. In | |
6671 | fact, after such an error, we should not get here because, the host should | |
6672 | not be remembered as one this message needs. However, there was a bug that | |
ba9af0af TF |
6673 | used to cause this to happen, so it is best to be on the safe side. |
6674 | ||
1ddeb334 TF |
6675 | Even if we haven't reached the retry time in the hints, there is one more |
6676 | check to do, which is for the ultimate address timeout. We only do this | |
6677 | check if there is an address retry record and there is not a domain retry | |
6678 | record; this implies that previous attempts to handle the address had the | |
6679 | retry_use_local_parts option turned on. We use this as an approximation | |
6680 | for the destination being like a local delivery, for example delivery over | |
6681 | LMTP to an IMAP message store. In this situation users are liable to bump | |
6682 | into their quota and thereby have intermittently successful deliveries, | |
6683 | which keep the retry record fresh, which can lead to us perpetually | |
6684 | deferring messages. */ | |
059ec3d9 | 6685 | |
8768d548 | 6686 | else if ( ( f.queue_running && !f.deliver_force |
d6c82d7b JH |
6687 | || continue_hostname |
6688 | ) | |
6689 | && ( ( domain_retry_record | |
6690 | && now < domain_retry_record->next_try | |
6691 | && !domain_retry_record->expired | |
6692 | ) | |
6693 | || ( address_retry_record | |
6694 | && now < address_retry_record->next_try | |
6695 | ) ) | |
6696 | && ( domain_retry_record | |
6697 | || !address_retry_record | |
6698 | || !retry_ultimate_address_timeout(addr->address_retry_key, | |
6699 | addr->domain, address_retry_record, now) | |
6700 | ) ) | |
059ec3d9 PH |
6701 | { |
6702 | addr->message = US"retry time not reached"; | |
6703 | addr->basic_errno = ERRNO_RRETRY; | |
ba936fb8 | 6704 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
de6f74f2 JH |
6705 | |
6706 | /* For remote-retry errors (here and just above) that we've not yet | |
6707 | hit the rery time, use the error recorded in the retry database | |
6708 | as info in the warning message. This lets us send a message even | |
6709 | when we're not failing on a fresh attempt. We assume that this | |
6710 | info is not sensitive. */ | |
6711 | ||
6712 | addr->message = domain_retry_record | |
6713 | ? domain_retry_record->text : address_retry_record->text; | |
6714 | setflag(addr, af_pass_message); | |
059ec3d9 PH |
6715 | } |
6716 | ||
6717 | /* The domain is OK for routing. Remember if retry data exists so it | |
6718 | can be cleaned up after a successful delivery. */ | |
6719 | ||
6720 | else | |
6721 | { | |
d6c82d7b | 6722 | if (domain_retry_record || address_retry_record) |
059ec3d9 PH |
6723 | setflag(addr, af_dr_retry_exists); |
6724 | addr->next = addr_route; | |
6725 | addr_route = addr; | |
6726 | DEBUG(D_deliver|D_route) | |
6727 | debug_printf("%s: queued for routing\n", addr->address); | |
6728 | } | |
6729 | } | |
6730 | ||
6731 | /* The database is closed while routing is actually happening. Requests to | |
6732 | update it are put on a chain and all processed together at the end. */ | |
6733 | ||
d6c82d7b | 6734 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
6735 | |
6736 | /* If queue_domains is set, we don't even want to try routing addresses in | |
6737 | those domains. During queue runs, queue_domains is forced to be unset. | |
6738 | Optimize by skipping this pass through the addresses if nothing is set. */ | |
6739 | ||
8768d548 | 6740 | if (!f.deliver_force && queue_domains) |
059ec3d9 PH |
6741 | { |
6742 | address_item *okaddr = NULL; | |
d6c82d7b | 6743 | while (addr_route) |
059ec3d9 PH |
6744 | { |
6745 | address_item *addr = addr_route; | |
6746 | addr_route = addr->next; | |
6747 | ||
6748 | deliver_domain = addr->domain; /* set $domain */ | |
55414b25 | 6749 | if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0, |
059ec3d9 PH |
6750 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) |
6751 | != OK) | |
059ec3d9 PH |
6752 | if (rc == DEFER) |
6753 | { | |
6754 | addr->basic_errno = ERRNO_LISTDEFER; | |
6755 | addr->message = US"queue_domains lookup deferred"; | |
ba936fb8 | 6756 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6757 | } |
6758 | else | |
6759 | { | |
6760 | addr->next = okaddr; | |
6761 | okaddr = addr; | |
6762 | } | |
059ec3d9 PH |
6763 | else |
6764 | { | |
6765 | addr->basic_errno = ERRNO_QUEUE_DOMAIN; | |
6766 | addr->message = US"domain is in queue_domains"; | |
ba936fb8 | 6767 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6768 | } |
6769 | } | |
6770 | ||
6771 | addr_route = okaddr; | |
6772 | } | |
6773 | ||
6774 | /* Now route those addresses that are not deferred. */ | |
6775 | ||
d6c82d7b | 6776 | while (addr_route) |
059ec3d9 PH |
6777 | { |
6778 | int rc; | |
6779 | address_item *addr = addr_route; | |
55414b25 | 6780 | const uschar *old_domain = addr->domain; |
059ec3d9 PH |
6781 | uschar *old_unique = addr->unique; |
6782 | addr_route = addr->next; | |
6783 | addr->next = NULL; | |
6784 | ||
6785 | /* Just in case some router parameter refers to it. */ | |
6786 | ||
d6c82d7b JH |
6787 | if (!(return_path = addr->prop.errors_address)) |
6788 | return_path = sender_address; | |
059ec3d9 PH |
6789 | |
6790 | /* If a router defers an address, add a retry item. Whether or not to | |
6791 | use the local part in the key is a property of the router. */ | |
6792 | ||
6793 | if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new, | |
6794 | &addr_succeed, v_none)) == DEFER) | |
d6c82d7b JH |
6795 | retry_add_item(addr, |
6796 | addr->router->retry_use_local_part | |
36d295f1 | 6797 | ? string_sprintf("R:%s@%s", addr->local_part, addr->domain) |
d6c82d7b JH |
6798 | : string_sprintf("R:%s", addr->domain), |
6799 | 0); | |
059ec3d9 PH |
6800 | |
6801 | /* Otherwise, if there is an existing retry record in the database, add | |
09945f1e PH |
6802 | retry items to delete both forms. We must also allow for the possibility |
6803 | of a routing retry that includes the sender address. Since the domain might | |
6804 | have been rewritten (expanded to fully qualified) as a result of routing, | |
6805 | ensure that the rewritten form is also deleted. */ | |
059ec3d9 PH |
6806 | |
6807 | else if (testflag(addr, af_dr_retry_exists)) | |
6808 | { | |
09945f1e PH |
6809 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
6810 | sender_address); | |
6811 | retry_add_item(addr, altkey, rf_delete); | |
059ec3d9 PH |
6812 | retry_add_item(addr, addr->address_retry_key, rf_delete); |
6813 | retry_add_item(addr, addr->domain_retry_key, rf_delete); | |
6814 | if (Ustrcmp(addr->domain, old_domain) != 0) | |
6815 | retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete); | |
6816 | } | |
6817 | ||
6818 | /* DISCARD is given for :blackhole: and "seen finish". The event has been | |
6819 | logged, but we need to ensure the address (and maybe parents) is marked | |
6820 | done. */ | |
6821 | ||
6822 | if (rc == DISCARD) | |
6823 | { | |
6824 | address_done(addr, tod_stamp(tod_log)); | |
6825 | continue; /* route next address */ | |
6826 | } | |
6827 | ||
6828 | /* The address is finished with (failed or deferred). */ | |
6829 | ||
6830 | if (rc != OK) | |
6831 | { | |
ba936fb8 | 6832 | (void)post_process_one(addr, rc, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6833 | continue; /* route next address */ |
6834 | } | |
6835 | ||
6836 | /* The address has been routed. If the router changed the domain, it will | |
6837 | also have changed the unique address. We have to test whether this address | |
6838 | has already been delivered, because it's the unique address that finally | |
6839 | gets recorded. */ | |
6840 | ||
d6c82d7b JH |
6841 | if ( addr->unique != old_unique |
6842 | && tree_search(tree_nonrecipients, addr->unique) != 0 | |
6843 | ) | |
059ec3d9 PH |
6844 | { |
6845 | DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: " | |
6846 | "discarded\n", addr->address); | |
6847 | if (addr_remote == addr) addr_remote = addr->next; | |
6848 | else if (addr_local == addr) addr_local = addr->next; | |
6849 | } | |
6850 | ||
6851 | /* If the router has same_domain_copy_routing set, we are permitted to copy | |
6852 | the routing for any other addresses with the same domain. This is an | |
6853 | optimisation to save repeated DNS lookups for "standard" remote domain | |
6854 | routing. The option is settable only on routers that generate host lists. | |
6855 | We play it very safe, and do the optimization only if the address is routed | |
6856 | to a remote transport, there are no header changes, and the domain was not | |
6857 | modified by the router. */ | |
6858 | ||
d6c82d7b JH |
6859 | if ( addr_remote == addr |
6860 | && addr->router->same_domain_copy_routing | |
6861 | && !addr->prop.extra_headers | |
6862 | && !addr->prop.remove_headers | |
6863 | && old_domain == addr->domain | |
6864 | ) | |
059ec3d9 PH |
6865 | { |
6866 | address_item **chain = &addr_route; | |
d6c82d7b | 6867 | while (*chain) |
059ec3d9 PH |
6868 | { |
6869 | address_item *addr2 = *chain; | |
6870 | if (Ustrcmp(addr2->domain, addr->domain) != 0) | |
6871 | { | |
6872 | chain = &(addr2->next); | |
6873 | continue; | |
6874 | } | |
6875 | ||
6876 | /* Found a suitable address; take it off the routing list and add it to | |
6877 | the remote delivery list. */ | |
6878 | ||
6879 | *chain = addr2->next; | |
6880 | addr2->next = addr_remote; | |
6881 | addr_remote = addr2; | |
6882 | ||
6883 | /* Copy the routing data */ | |
6884 | ||
6885 | addr2->domain = addr->domain; | |
6886 | addr2->router = addr->router; | |
6887 | addr2->transport = addr->transport; | |
6888 | addr2->host_list = addr->host_list; | |
6889 | addr2->fallback_hosts = addr->fallback_hosts; | |
d43cbe25 | 6890 | addr2->prop.errors_address = addr->prop.errors_address; |
7eb0e5d2 JH |
6891 | copyflag(addr2, addr, af_hide_child); |
6892 | copyflag(addr2, addr, af_local_host_removed); | |
059ec3d9 PH |
6893 | |
6894 | DEBUG(D_deliver|D_route) | |
059ec3d9 PH |
6895 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n" |
6896 | "routing %s\n" | |
6897 | "Routing for %s copied from %s\n", | |
6898 | addr2->address, addr2->address, addr->address); | |
059ec3d9 PH |
6899 | } |
6900 | } | |
6901 | } /* Continue with routing the next address. */ | |
6902 | } /* Loop to process any child addresses that the routers created, and | |
6903 | any rerouted addresses that got put back on the new chain. */ | |
6904 | ||
6905 | ||
6906 | /* Debugging: show the results of the routing */ | |
6907 | ||
6908 | DEBUG(D_deliver|D_retry|D_route) | |
6909 | { | |
059ec3d9 PH |
6910 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); |
6911 | debug_printf("After routing:\n Local deliveries:\n"); | |
d7978c0f | 6912 | for (address_item * p = addr_local; p; p = p->next) |
059ec3d9 | 6913 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6914 | |
059ec3d9 | 6915 | debug_printf(" Remote deliveries:\n"); |
d7978c0f | 6916 | for (address_item * p = addr_remote; p; p = p->next) |
059ec3d9 | 6917 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6918 | |
059ec3d9 | 6919 | debug_printf(" Failed addresses:\n"); |
d7978c0f | 6920 | for (address_item * p = addr_failed; p; p = p->next) |
059ec3d9 | 6921 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6922 | |
059ec3d9 | 6923 | debug_printf(" Deferred addresses:\n"); |
d7978c0f | 6924 | for (address_item * p = addr_defer; p; p = p->next) |
059ec3d9 | 6925 | debug_printf(" %s\n", p->address); |
059ec3d9 PH |
6926 | } |
6927 | ||
6928 | /* Free any resources that were cached during routing. */ | |
6929 | ||
6930 | search_tidyup(); | |
6931 | route_tidyup(); | |
6932 | ||
6933 | /* These two variables are set only during routing, after check_local_user. | |
6934 | Ensure they are not set in transports. */ | |
6935 | ||
6936 | local_user_gid = (gid_t)(-1); | |
6937 | local_user_uid = (uid_t)(-1); | |
6938 | ||
d7174846 PH |
6939 | /* Check for any duplicate addresses. This check is delayed until after |
6940 | routing, because the flexibility of the routing configuration means that | |
6941 | identical addresses with different parentage may end up being redirected to | |
6942 | different addresses. Checking for duplicates too early (as we previously used | |
6943 | to) makes this kind of thing not work. */ | |
6944 | ||
6945 | do_duplicate_check(&addr_local); | |
6946 | do_duplicate_check(&addr_remote); | |
6947 | ||
059ec3d9 PH |
6948 | /* When acting as an MUA wrapper, we proceed only if all addresses route to a |
6949 | remote transport. The check that they all end up in one transaction happens in | |
6950 | the do_remote_deliveries() function. */ | |
6951 | ||
d6c82d7b JH |
6952 | if ( mua_wrapper |
6953 | && (addr_local || addr_failed || addr_defer) | |
6954 | ) | |
059ec3d9 PH |
6955 | { |
6956 | address_item *addr; | |
6957 | uschar *which, *colon, *msg; | |
6958 | ||
d6c82d7b | 6959 | if (addr_local) |
059ec3d9 PH |
6960 | { |
6961 | addr = addr_local; | |
6962 | which = US"local"; | |
6963 | } | |
d6c82d7b | 6964 | else if (addr_defer) |
059ec3d9 PH |
6965 | { |
6966 | addr = addr_defer; | |
6967 | which = US"deferred"; | |
6968 | } | |
6969 | else | |
6970 | { | |
6971 | addr = addr_failed; | |
6972 | which = US"failed"; | |
6973 | } | |
6974 | ||
d6c82d7b | 6975 | while (addr->parent) addr = addr->parent; |
059ec3d9 | 6976 | |
d6c82d7b | 6977 | if (addr->message) |
059ec3d9 PH |
6978 | { |
6979 | colon = US": "; | |
6980 | msg = addr->message; | |
6981 | } | |
6982 | else colon = msg = US""; | |
6983 | ||
6984 | /* We don't need to log here for a forced failure as it will already | |
6985 | have been logged. Defer will also have been logged, but as a defer, so we do | |
6986 | need to do the failure logging. */ | |
6987 | ||
6988 | if (addr != addr_failed) | |
6989 | log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery", | |
6990 | addr->address, which); | |
6991 | ||
6992 | /* Always write an error to the caller */ | |
6993 | ||
6994 | fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address, | |
6995 | which, colon, msg); | |
6996 | ||
6997 | final_yield = DELIVER_MUA_FAILED; | |
6998 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
6999 | goto DELIVERY_TIDYUP; | |
7000 | } | |
7001 | ||
7002 | ||
7003 | /* If this is a run to continue deliveries to an external channel that is | |
7004 | already set up, defer any local deliveries. */ | |
7005 | ||
d6c82d7b | 7006 | if (continue_transport) |
059ec3d9 | 7007 | { |
d6c82d7b | 7008 | if (addr_defer) |
059ec3d9 PH |
7009 | { |
7010 | address_item *addr = addr_defer; | |
d6c82d7b | 7011 | while (addr->next) addr = addr->next; |
059ec3d9 PH |
7012 | addr->next = addr_local; |
7013 | } | |
d6c82d7b JH |
7014 | else |
7015 | addr_defer = addr_local; | |
059ec3d9 PH |
7016 | addr_local = NULL; |
7017 | } | |
7018 | ||
7019 | ||
7020 | /* Because address rewriting can happen in the routers, we should not really do | |
7021 | ANY deliveries until all addresses have been routed, so that all recipients of | |
7022 | the message get the same headers. However, this is in practice not always | |
7023 | possible, since sometimes remote addresses give DNS timeouts for days on end. | |
7024 | The pragmatic approach is to deliver what we can now, saving any rewritten | |
7025 | headers so that at least the next lot of recipients benefit from the rewriting | |
7026 | that has already been done. | |
7027 | ||
7028 | If any headers have been rewritten during routing, update the spool file to | |
7029 | remember them for all subsequent deliveries. This can be delayed till later if | |
7030 | there is only address to be delivered - if it succeeds the spool write need not | |
7031 | happen. */ | |
7032 | ||
8768d548 | 7033 | if ( f.header_rewritten |
92b0827a JH |
7034 | && ( addr_local && (addr_local->next || addr_remote) |
7035 | || addr_remote && addr_remote->next | |
d6c82d7b | 7036 | ) ) |
059ec3d9 PH |
7037 | { |
7038 | /* Panic-dies on error */ | |
7039 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
8768d548 | 7040 | f.header_rewritten = FALSE; |
059ec3d9 PH |
7041 | } |
7042 | ||
7043 | ||
de6f74f2 | 7044 | /* If there are any deliveries to do and we do not already have the journal |
92b0827a JH |
7045 | file, create it. This is used to record successful deliveries as soon as |
7046 | possible after each delivery is known to be complete. A file opened with | |
7047 | O_APPEND is used so that several processes can run simultaneously. | |
059ec3d9 PH |
7048 | |
7049 | The journal is just insurance against crashes. When the spool file is | |
7050 | ultimately updated at the end of processing, the journal is deleted. If a | |
7051 | journal is found to exist at the start of delivery, the addresses listed | |
7052 | therein are added to the non-recipients. */ | |
7053 | ||
d6c82d7b | 7054 | if (addr_local || addr_remote) |
059ec3d9 | 7055 | { |
92b0827a | 7056 | if (journal_fd < 0) |
059ec3d9 | 7057 | { |
92b0827a | 7058 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
4c0a7a9c | 7059 | |
92b0827a JH |
7060 | if ((journal_fd = Uopen(fname, |
7061 | #ifdef O_CLOEXEC | |
7062 | O_CLOEXEC | | |
7063 | #endif | |
7064 | O_WRONLY|O_APPEND|O_CREAT|O_EXCL, SPOOL_MODE)) < 0) | |
7065 | { | |
7066 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s", | |
7067 | fname, strerror(errno)); | |
7068 | return DELIVER_NOT_ATTEMPTED; | |
7069 | } | |
059ec3d9 | 7070 | |
92b0827a JH |
7071 | /* Set the close-on-exec flag, make the file owned by Exim, and ensure |
7072 | that the mode is correct - the group setting doesn't always seem to get | |
7073 | set automatically. */ | |
059ec3d9 | 7074 | |
92b0827a JH |
7075 | if( fchown(journal_fd, exim_uid, exim_gid) |
7076 | || fchmod(journal_fd, SPOOL_MODE) | |
7077 | #ifndef O_CLOEXEC | |
7078 | || fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC) | |
7079 | #endif | |
7080 | ) | |
7081 | { | |
7082 | int ret = Uunlink(fname); | |
7083 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s", | |
7084 | fname, strerror(errno)); | |
7085 | if(ret && errno != ENOENT) | |
7086 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", | |
7087 | fname, strerror(errno)); | |
7088 | return DELIVER_NOT_ATTEMPTED; | |
7089 | } | |
1ac6b2e7 | 7090 | } |
059ec3d9 | 7091 | } |
92b0827a JH |
7092 | else if (journal_fd >= 0) |
7093 | { | |
7094 | close(journal_fd); | |
7095 | journal_fd = -1; | |
7096 | } | |
059ec3d9 PH |
7097 | |
7098 | ||
1ac6b2e7 | 7099 | |
059ec3d9 PH |
7100 | /* Now we can get down to the business of actually doing deliveries. Local |
7101 | deliveries are done first, then remote ones. If ever the problems of how to | |
7102 | handle fallback transports are figured out, this section can be put into a loop | |
7103 | for handling fallbacks, though the uid switching will have to be revised. */ | |
7104 | ||
f1513293 PH |
7105 | /* Precompile a regex that is used to recognize a parameter in response |
7106 | to an LHLO command, if is isn't already compiled. This may be used on both | |
7107 | local and remote LMTP deliveries. */ | |
7108 | ||
d6c82d7b JH |
7109 | if (!regex_IGNOREQUOTA) |
7110 | regex_IGNOREQUOTA = | |
7111 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
f1513293 PH |
7112 | |
7113 | /* Handle local deliveries */ | |
7114 | ||
d6c82d7b | 7115 | if (addr_local) |
059ec3d9 PH |
7116 | { |
7117 | DEBUG(D_deliver|D_transport) | |
7118 | debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n"); | |
7119 | do_local_deliveries(); | |
8768d548 | 7120 | f.disable_logging = FALSE; |
059ec3d9 PH |
7121 | } |
7122 | ||
7123 | /* If queue_run_local is set, we do not want to attempt any remote deliveries, | |
7124 | so just queue them all. */ | |
7125 | ||
8768d548 | 7126 | if (f.queue_run_local) |
d6c82d7b | 7127 | while (addr_remote) |
059ec3d9 PH |
7128 | { |
7129 | address_item *addr = addr_remote; | |
7130 | addr_remote = addr->next; | |
7131 | addr->next = NULL; | |
7132 | addr->basic_errno = ERRNO_LOCAL_ONLY; | |
7133 | addr->message = US"remote deliveries suppressed"; | |
ba936fb8 | 7134 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 | 7135 | } |
059ec3d9 PH |
7136 | |
7137 | /* Handle remote deliveries */ | |
7138 | ||
d6c82d7b | 7139 | if (addr_remote) |
059ec3d9 PH |
7140 | { |
7141 | DEBUG(D_deliver|D_transport) | |
7142 | debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n"); | |
7143 | ||
7144 | /* Precompile some regex that are used to recognize parameters in response | |
7145 | to an EHLO command, if they aren't already compiled. */ | |
7146 | ||
476be7e2 | 7147 | deliver_init(); |
6c1c3d1d | 7148 | |
059ec3d9 PH |
7149 | /* Now sort the addresses if required, and do the deliveries. The yield of |
7150 | do_remote_deliveries is FALSE when mua_wrapper is set and all addresses | |
7151 | cannot be delivered in one transaction. */ | |
7152 | ||
d6c82d7b | 7153 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
7154 | if (!do_remote_deliveries(FALSE)) |
7155 | { | |
7156 | log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all " | |
7157 | "be delivered in one transaction"); | |
7158 | fprintf(stderr, "delivery to smarthost failed (configuration problem)\n"); | |
7159 | ||
7160 | final_yield = DELIVER_MUA_FAILED; | |
7161 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
7162 | goto DELIVERY_TIDYUP; | |
7163 | } | |
7164 | ||
7165 | /* See if any of the addresses that failed got put on the queue for delivery | |
7166 | to their fallback hosts. We do it this way because often the same fallback | |
7167 | host is used for many domains, so all can be sent in a single transaction | |
7168 | (if appropriately configured). */ | |
7169 | ||
d6c82d7b | 7170 | if (addr_fallback && !mua_wrapper) |
059ec3d9 PH |
7171 | { |
7172 | DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n"); | |
7173 | addr_remote = addr_fallback; | |
7174 | addr_fallback = NULL; | |
d6c82d7b | 7175 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
7176 | do_remote_deliveries(TRUE); |
7177 | } | |
8768d548 | 7178 | f.disable_logging = FALSE; |
059ec3d9 PH |
7179 | } |
7180 | ||
7181 | ||
7182 | /* All deliveries are now complete. Ignore SIGTERM during this tidying up | |
7183 | phase, to minimize cases of half-done things. */ | |
7184 | ||
7185 | DEBUG(D_deliver) | |
7186 | debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n"); | |
ef698bf6 | 7187 | cancel_cutthrough_connection(TRUE, US"deliveries are done"); |
059ec3d9 PH |
7188 | |
7189 | /* Root privilege is no longer needed */ | |
7190 | ||
7191 | exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying"); | |
7192 | ||
7193 | set_process_info("tidying up after delivering %s", message_id); | |
7194 | signal(SIGTERM, SIG_IGN); | |
7195 | ||
7196 | /* When we are acting as an MUA wrapper, the smtp transport will either have | |
47c7a64a PH |
7197 | succeeded for all addresses, or failed them all in normal cases. However, there |
7198 | are some setup situations (e.g. when a named port does not exist) that cause an | |
7199 | immediate exit with deferral of all addresses. Convert those into failures. We | |
7200 | do not ever want to retry, nor do we want to send a bounce message. */ | |
059ec3d9 PH |
7201 | |
7202 | if (mua_wrapper) | |
7203 | { | |
d6c82d7b | 7204 | if (addr_defer) |
47c7a64a | 7205 | { |
d7978c0f JH |
7206 | address_item * nextaddr; |
7207 | for (address_item * addr = addr_defer; addr; addr = nextaddr) | |
47c7a64a PH |
7208 | { |
7209 | log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred " | |
7210 | "delivery", addr->address); | |
7211 | nextaddr = addr->next; | |
7212 | addr->next = addr_failed; | |
7213 | addr_failed = addr; | |
7214 | } | |
7215 | addr_defer = NULL; | |
7216 | } | |
7217 | ||
7218 | /* Now all should either have succeeded or failed. */ | |
7219 | ||
d6c82d7b JH |
7220 | if (!addr_failed) |
7221 | final_yield = DELIVER_MUA_SUCCEEDED; | |
7222 | else | |
059ec3d9 | 7223 | { |
c562fd30 | 7224 | host_item * host; |
d6c82d7b JH |
7225 | uschar *s = addr_failed->user_message; |
7226 | ||
7227 | if (!s) s = addr_failed->message; | |
059ec3d9 PH |
7228 | |
7229 | fprintf(stderr, "Delivery failed: "); | |
7230 | if (addr_failed->basic_errno > 0) | |
7231 | { | |
7232 | fprintf(stderr, "%s", strerror(addr_failed->basic_errno)); | |
d6c82d7b | 7233 | if (s) fprintf(stderr, ": "); |
059ec3d9 | 7234 | } |
c562fd30 JH |
7235 | if ((host = addr_failed->host_used)) |
7236 | fprintf(stderr, "H=%s [%s]: ", host->name, host->address); | |
d6c82d7b JH |
7237 | if (s) |
7238 | fprintf(stderr, "%s", CS s); | |
7239 | else if (addr_failed->basic_errno <= 0) | |
7240 | fprintf(stderr, "unknown error"); | |
059ec3d9 PH |
7241 | fprintf(stderr, "\n"); |
7242 | ||
7243 | final_yield = DELIVER_MUA_FAILED; | |
7244 | addr_failed = NULL; | |
7245 | } | |
7246 | } | |
7247 | ||
7248 | /* In a normal configuration, we now update the retry database. This is done in | |
7249 | one fell swoop at the end in order not to keep opening and closing (and | |
7250 | locking) the database. The code for handling retries is hived off into a | |
7251 | separate module for convenience. We pass it the addresses of the various | |
7252 | chains, because deferred addresses can get moved onto the failed chain if the | |
7253 | retry cutoff time has expired for all alternative destinations. Bypass the | |
7254 | updating of the database if the -N flag is set, which is a debugging thing that | |
7255 | prevents actual delivery. */ | |
7256 | ||
8768d548 | 7257 | else if (!f.dont_deliver) |
d6c82d7b | 7258 | retry_update(&addr_defer, &addr_failed, &addr_succeed); |
059ec3d9 | 7259 | |
f40d5be3 | 7260 | /* Send DSN for successful messages if requested */ |
6c1c3d1d WB |
7261 | addr_senddsn = NULL; |
7262 | ||
f40d5be3 | 7263 | for (addr_dsntmp = addr_succeed; addr_dsntmp; addr_dsntmp = addr_dsntmp->next) |
6c1c3d1d | 7264 | { |
6c1c3d1d | 7265 | /* af_ignore_error not honored here. it's not an error */ |
f40d5be3 | 7266 | DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n" |
9671784a JH |
7267 | "DSN: processing successful delivery address: %s\n" |
7268 | "DSN: Sender_address: %s\n" | |
7269 | "DSN: orcpt: %s flags: %d\n" | |
7270 | "DSN: envid: %s ret: %d\n" | |
7271 | "DSN: Final recipient: %s\n" | |
7272 | "DSN: Remote SMTP server supports DSN: %d\n", | |
d011368a | 7273 | addr_dsntmp->router ? addr_dsntmp->router->name : US"(unknown)", |
9671784a JH |
7274 | addr_dsntmp->address, |
7275 | sender_address, | |
d011368a JH |
7276 | addr_dsntmp->dsn_orcpt ? addr_dsntmp->dsn_orcpt : US"NULL", |
7277 | addr_dsntmp->dsn_flags, | |
7278 | dsn_envid ? dsn_envid : US"NULL", dsn_ret, | |
9671784a JH |
7279 | addr_dsntmp->address, |
7280 | addr_dsntmp->dsn_aware | |
7281 | ); | |
6c1c3d1d WB |
7282 | |
7283 | /* send report if next hop not DSN aware or a router flagged "last DSN hop" | |
7284 | and a report was requested */ | |
9671784a JH |
7285 | if ( ( addr_dsntmp->dsn_aware != dsn_support_yes |
7286 | || addr_dsntmp->dsn_flags & rf_dsnlasthop | |
7287 | ) | |
9671784a JH |
7288 | && addr_dsntmp->dsn_flags & rf_notify_success |
7289 | ) | |
6c1c3d1d WB |
7290 | { |
7291 | /* copy and relink address_item and send report with all of them at once later */ | |
82f90600 | 7292 | address_item * addr_next = addr_senddsn; |
6c1c3d1d | 7293 | addr_senddsn = store_get(sizeof(address_item)); |
82f90600 | 7294 | *addr_senddsn = *addr_dsntmp; |
6c1c3d1d WB |
7295 | addr_senddsn->next = addr_next; |
7296 | } | |
7297 | else | |
94431adb | 7298 | DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n"); |
6c1c3d1d WB |
7299 | } |
7300 | ||
9671784a | 7301 | if (addr_senddsn) |
6c1c3d1d WB |
7302 | { |
7303 | pid_t pid; | |
7304 | int fd; | |
7305 | ||
94431adb | 7306 | /* create exim process to send message */ |
6c1c3d1d WB |
7307 | pid = child_open_exim(&fd); |
7308 | ||
7309 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid); | |
94431adb | 7310 | |
6c1c3d1d WB |
7311 | if (pid < 0) /* Creation of child failed */ |
7312 | { | |
7313 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " | |
7314 | "create child process to send failure message: %s", getpid(), | |
7315 | getppid(), strerror(errno)); | |
7316 | ||
1c5b1499 | 7317 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n"); |
94431adb | 7318 | } |
6c1c3d1d WB |
7319 | else /* Creation of child succeeded */ |
7320 | { | |
ee8b8090 | 7321 | FILE * f = fdopen(fd, "wb"); |
6c1c3d1d | 7322 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ |
45500060 | 7323 | uschar * bound; |
cab0c277 | 7324 | transport_ctx tctx = {{0}}; |
94431adb | 7325 | |
1c5b1499 JH |
7326 | DEBUG(D_deliver) |
7327 | debug_printf("sending error message to: %s\n", sender_address); | |
94431adb | 7328 | |
6c1c3d1d | 7329 | /* build unique id for MIME boundary */ |
45500060 JH |
7330 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
7331 | DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound); | |
94431adb | 7332 | |
c007c974 JH |
7333 | if (errors_reply_to) |
7334 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
94431adb | 7335 | |
c007c974 JH |
7336 | fprintf(f, "Auto-Submitted: auto-generated\n" |
7337 | "From: Mail Delivery System <Mailer-Daemon@%s>\n" | |
7338 | "To: %s\n" | |
7339 | "Subject: Delivery Status Notification\n" | |
7340 | "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n" | |
7341 | "MIME-Version: 1.0\n\n" | |
7342 | ||
7343 | "--%s\n" | |
7344 | "Content-type: text/plain; charset=us-ascii\n\n" | |
94431adb | 7345 | |
c007c974 | 7346 | "This message was created automatically by mail delivery software.\n" |
8864c2c4 | 7347 | " ----- The following addresses had successful delivery notifications -----\n", |
45500060 | 7348 | qualify_domain_sender, sender_address, bound, bound); |
6c1c3d1d | 7349 | |
1c5b1499 JH |
7350 | for (addr_dsntmp = addr_senddsn; addr_dsntmp; |
7351 | addr_dsntmp = addr_dsntmp->next) | |
c007c974 JH |
7352 | fprintf(f, "<%s> (relayed %s)\n\n", |
7353 | addr_dsntmp->address, | |
ea97267c JH |
7354 | addr_dsntmp->dsn_flags & rf_dsnlasthop ? "via non DSN router" |
7355 | : addr_dsntmp->dsn_aware == dsn_support_no ? "to non-DSN-aware mailer" | |
7356 | : "via non \"Remote SMTP\" router" | |
c007c974 | 7357 | ); |
1c5b1499 | 7358 | |
c007c974 JH |
7359 | fprintf(f, "--%s\n" |
7360 | "Content-type: message/delivery-status\n\n" | |
7361 | "Reporting-MTA: dns; %s\n", | |
45500060 | 7362 | bound, smtp_active_hostname); |
c007c974 | 7363 | |
1c5b1499 JH |
7364 | if (dsn_envid) |
7365 | { /* must be decoded from xtext: see RFC 3461:6.3a */ | |
6c1c3d1d WB |
7366 | uschar *xdec_envid; |
7367 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
c007c974 | 7368 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7369 | else |
968178ac | 7370 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7371 | } |
c007c974 | 7372 | fputc('\n', f); |
6c1c3d1d | 7373 | |
c007c974 JH |
7374 | for (addr_dsntmp = addr_senddsn; |
7375 | addr_dsntmp; | |
7376 | addr_dsntmp = addr_dsntmp->next) | |
6c1c3d1d | 7377 | { |
c007c974 | 7378 | if (addr_dsntmp->dsn_orcpt) |
6c1c3d1d | 7379 | fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt); |
c007c974 JH |
7380 | |
7381 | fprintf(f, "Action: delivered\n" | |
7382 | "Final-Recipient: rfc822;%s\n" | |
7383 | "Status: 2.0.0\n", | |
7384 | addr_dsntmp->address); | |
7385 | ||
7386 | if (addr_dsntmp->host_used && addr_dsntmp->host_used->name) | |
1c5b1499 | 7387 | fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n", |
c007c974 | 7388 | addr_dsntmp->host_used->name); |
6c1c3d1d | 7389 | else |
1c5b1499 | 7390 | fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n", |
ea97267c | 7391 | addr_dsntmp->dsn_flags & rf_dsnlasthop ? "DSN" : "SMTP"); |
6c1c3d1d WB |
7392 | } |
7393 | ||
45500060 | 7394 | fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound); |
94431adb | 7395 | |
6c1c3d1d WB |
7396 | fflush(f); |
7397 | transport_filter_argv = NULL; /* Just in case */ | |
7398 | return_path = sender_address; /* In case not previously set */ | |
94431adb | 7399 | |
6c1c3d1d | 7400 | /* Write the original email out */ |
6b46ecc6 | 7401 | |
ee8b8090 | 7402 | tctx.u.fd = fd; |
6b46ecc6 | 7403 | tctx.options = topt_add_return_path | topt_no_body; |
ee8b8090 JH |
7404 | /*XXX hmm, retval ignored. |
7405 | Could error for any number of reasons, and they are not handled. */ | |
42055a33 | 7406 | transport_write_message(&tctx, 0); |
6c1c3d1d WB |
7407 | fflush(f); |
7408 | ||
21bc4865 | 7409 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
7410 | |
7411 | fflush(f); | |
7412 | fclose(f); | |
7413 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ | |
7414 | } | |
7415 | } | |
6c1c3d1d | 7416 | |
059ec3d9 PH |
7417 | /* If any addresses failed, we must send a message to somebody, unless |
7418 | af_ignore_error is set, in which case no action is taken. It is possible for | |
7419 | several messages to get sent if there are addresses with different | |
7420 | requirements. */ | |
7421 | ||
d6c82d7b | 7422 | while (addr_failed) |
059ec3d9 PH |
7423 | { |
7424 | pid_t pid; | |
7425 | int fd; | |
7426 | uschar *logtod = tod_stamp(tod_log); | |
7427 | address_item *addr; | |
7428 | address_item *handled_addr = NULL; | |
7429 | address_item **paddr; | |
7430 | address_item *msgchain = NULL; | |
7431 | address_item **pmsgchain = &msgchain; | |
7432 | ||
7433 | /* There are weird cases when logging is disabled in the transport. However, | |
7434 | there may not be a transport (address failed by a router). */ | |
7435 | ||
8768d548 | 7436 | f.disable_logging = FALSE; |
d6c82d7b | 7437 | if (addr_failed->transport) |
8768d548 | 7438 | f.disable_logging = addr_failed->transport->disable_logging; |
059ec3d9 PH |
7439 | |
7440 | DEBUG(D_deliver) | |
7441 | debug_printf("processing failed address %s\n", addr_failed->address); | |
7442 | ||
7443 | /* There are only two ways an address in a bounce message can get here: | |
7444 | ||
7445 | (1) When delivery was initially deferred, but has now timed out (in the call | |
7446 | to retry_update() above). We can detect this by testing for | |
7447 | af_retry_timedout. If the address does not have its own errors address, | |
7448 | we arrange to ignore the error. | |
7449 | ||
7450 | (2) If delivery failures for bounce messages are being ignored. We can detect | |
7451 | this by testing for af_ignore_error. This will also be set if a bounce | |
7452 | message has been autothawed and the ignore_bounce_errors_after time has | |
7453 | passed. It might also be set if a router was explicitly configured to | |
7454 | ignore errors (errors_to = ""). | |
7455 | ||
7456 | If neither of these cases obtains, something has gone wrong. Log the | |
7457 | incident, but then ignore the error. */ | |
7458 | ||
d6c82d7b | 7459 | if (sender_address[0] == 0 && !addr_failed->prop.errors_address) |
059ec3d9 | 7460 | { |
9671784a | 7461 | if ( !testflag(addr_failed, af_retry_timedout) |
7eb0e5d2 | 7462 | && !addr_failed->prop.ignore_error) |
059ec3d9 PH |
7463 | log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message " |
7464 | "failure is neither frozen nor ignored (it's been ignored)"); | |
7eb0e5d2 JH |
7465 | |
7466 | addr_failed->prop.ignore_error = TRUE; | |
059ec3d9 PH |
7467 | } |
7468 | ||
7469 | /* If the first address on the list has af_ignore_error set, just remove | |
7470 | it from the list, throw away any saved message file, log it, and | |
7471 | mark the recipient done. */ | |
7472 | ||
7eb0e5d2 | 7473 | if ( addr_failed->prop.ignore_error |
ea97267c JH |
7474 | || addr_failed->dsn_flags & (rf_dsnflags & ~rf_notify_failure) |
7475 | ) | |
1c5b1499 | 7476 | { |
059ec3d9 PH |
7477 | addr = addr_failed; |
7478 | addr_failed = addr->next; | |
d6c82d7b | 7479 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 | 7480 | |
ffbc20ed MK |
7481 | #ifndef DISABLE_EVENT |
7482 | msg_event_raise(US"msg:fail:delivery", addr); | |
7483 | #endif | |
059ec3d9 PH |
7484 | log_write(0, LOG_MAIN, "%s%s%s%s: error ignored", |
7485 | addr->address, | |
1c5b1499 JH |
7486 | !addr->parent ? US"" : US" <", |
7487 | !addr->parent ? US"" : addr->parent->address, | |
7488 | !addr->parent ? US"" : US">"); | |
059ec3d9 PH |
7489 | |
7490 | address_done(addr, logtod); | |
7491 | child_done(addr, logtod); | |
7492 | /* Panic-dies on error */ | |
7493 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7494 | } | |
7495 | ||
7496 | /* Otherwise, handle the sending of a message. Find the error address for | |
7497 | the first address, then send a message that includes all failed addresses | |
7498 | that have the same error address. Note the bounce_recipient is a global so | |
4c04137d | 7499 | that it can be accessed by $bounce_recipient while creating a customized |
059ec3d9 PH |
7500 | error message. */ |
7501 | ||
7502 | else | |
7503 | { | |
d6c82d7b JH |
7504 | if (!(bounce_recipient = addr_failed->prop.errors_address)) |
7505 | bounce_recipient = sender_address; | |
059ec3d9 PH |
7506 | |
7507 | /* Make a subprocess to send a message */ | |
7508 | ||
1c5b1499 | 7509 | if ((pid = child_open_exim(&fd)) < 0) |
059ec3d9 PH |
7510 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " |
7511 | "create child process to send failure message: %s", getpid(), | |
7512 | getppid(), strerror(errno)); | |
7513 | ||
7514 | /* Creation of child succeeded */ | |
7515 | ||
7516 | else | |
7517 | { | |
7518 | int ch, rc; | |
7519 | int filecount = 0; | |
7520 | int rcount = 0; | |
7521 | uschar *bcc, *emf_text; | |
8768d548 JH |
7522 | FILE * fp = fdopen(fd, "wb"); |
7523 | FILE * emf = NULL; | |
059ec3d9 PH |
7524 | BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0; |
7525 | int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) * | |
7526 | DELIVER_IN_BUFFER_SIZE; | |
45500060 | 7527 | uschar * bound; |
0f9d3aea JH |
7528 | uschar *dsnlimitmsg; |
7529 | uschar *dsnnotifyhdr; | |
7530 | int topt; | |
059ec3d9 PH |
7531 | |
7532 | DEBUG(D_deliver) | |
7533 | debug_printf("sending error message to: %s\n", bounce_recipient); | |
7534 | ||
7535 | /* Scan the addresses for all that have the same errors address, removing | |
7536 | them from the addr_failed chain, and putting them on msgchain. */ | |
7537 | ||
7538 | paddr = &addr_failed; | |
d6c82d7b | 7539 | for (addr = addr_failed; addr; addr = *paddr) |
d43cbe25 JH |
7540 | if (Ustrcmp(bounce_recipient, addr->prop.errors_address |
7541 | ? addr->prop.errors_address : sender_address) == 0) | |
1c5b1499 | 7542 | { /* The same - dechain */ |
059ec3d9 PH |
7543 | *paddr = addr->next; |
7544 | *pmsgchain = addr; | |
7545 | addr->next = NULL; | |
7546 | pmsgchain = &(addr->next); | |
7547 | } | |
1c5b1499 JH |
7548 | else |
7549 | paddr = &addr->next; /* Not the same; skip */ | |
059ec3d9 PH |
7550 | |
7551 | /* Include X-Failed-Recipients: for automatic interpretation, but do | |
7552 | not let any one header line get too long. We do this by starting a | |
7553 | new header every 50 recipients. Omit any addresses for which the | |
7554 | "hide_child" flag is set. */ | |
7555 | ||
d6c82d7b | 7556 | for (addr = msgchain; addr; addr = addr->next) |
059ec3d9 PH |
7557 | { |
7558 | if (testflag(addr, af_hide_child)) continue; | |
7559 | if (rcount >= 50) | |
7560 | { | |
8768d548 | 7561 | fprintf(fp, "\n"); |
059ec3d9 PH |
7562 | rcount = 0; |
7563 | } | |
8768d548 | 7564 | fprintf(fp, "%s%s", |
d6c82d7b JH |
7565 | rcount++ == 0 |
7566 | ? "X-Failed-Recipients: " | |
7567 | : ",\n ", | |
7568 | testflag(addr, af_pfr) && addr->parent | |
7569 | ? string_printing(addr->parent->address) | |
7570 | : string_printing(addr->address)); | |
059ec3d9 | 7571 | } |
8768d548 | 7572 | if (rcount > 0) fprintf(fp, "\n"); |
059ec3d9 PH |
7573 | |
7574 | /* Output the standard headers */ | |
7575 | ||
1c5b1499 | 7576 | if (errors_reply_to) |
8768d548 JH |
7577 | fprintf(fp, "Reply-To: %s\n", errors_reply_to); |
7578 | fprintf(fp, "Auto-Submitted: auto-replied\n"); | |
7579 | moan_write_from(fp); | |
7580 | fprintf(fp, "To: %s\n", bounce_recipient); | |
059ec3d9 | 7581 | |
6c1c3d1d | 7582 | /* generate boundary string and output MIME-Headers */ |
45500060 | 7583 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 | 7584 | |
8768d548 | 7585 | fprintf(fp, "Content-Type: multipart/report;" |
c007c974 JH |
7586 | " report-type=delivery-status; boundary=%s\n" |
7587 | "MIME-Version: 1.0\n", | |
45500060 | 7588 | bound); |
6c1c3d1d | 7589 | |
059ec3d9 PH |
7590 | /* Open a template file if one is provided. Log failure to open, but |
7591 | carry on - default texts will be used. */ | |
7592 | ||
c007c974 JH |
7593 | if (bounce_message_file) |
7594 | if (!(emf = Ufopen(bounce_message_file, "rb"))) | |
059ec3d9 PH |
7595 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error " |
7596 | "message texts: %s", bounce_message_file, strerror(errno)); | |
059ec3d9 PH |
7597 | |
7598 | /* Quietly copy to configured additional addresses if required. */ | |
7599 | ||
c007c974 | 7600 | if ((bcc = moan_check_errorcopy(bounce_recipient))) |
8768d548 | 7601 | fprintf(fp, "Bcc: %s\n", bcc); |
059ec3d9 PH |
7602 | |
7603 | /* The texts for the message can be read from a template file; if there | |
7604 | isn't one, or if it is too short, built-in texts are used. The first | |
7605 | emf text is a Subject: and any other headers. */ | |
7606 | ||
c007c974 | 7607 | if ((emf_text = next_emf(emf, US"header"))) |
8768d548 | 7608 | fprintf(fp, "%s\n", emf_text); |
c007c974 | 7609 | else |
8768d548 | 7610 | fprintf(fp, "Subject: Mail delivery failed%s\n\n", |
059ec3d9 | 7611 | to_sender? ": returning message to sender" : ""); |
059ec3d9 | 7612 | |
6c1c3d1d | 7613 | /* output human readable part as text/plain section */ |
8768d548 | 7614 | fprintf(fp, "--%s\n" |
c007c974 | 7615 | "Content-type: text/plain; charset=us-ascii\n\n", |
45500060 | 7616 | bound); |
6c1c3d1d | 7617 | |
c007c974 | 7618 | if ((emf_text = next_emf(emf, US"intro"))) |
8768d548 | 7619 | fprintf(fp, "%s", CS emf_text); |
c007c974 | 7620 | else |
059ec3d9 | 7621 | { |
8768d548 | 7622 | fprintf(fp, |
059ec3d9 PH |
7623 | /* This message has been reworded several times. It seems to be confusing to |
7624 | somebody, however it is worded. I have retreated to the original, simple | |
7625 | wording. */ | |
7626 | "This message was created automatically by mail delivery software.\n"); | |
c007c974 JH |
7627 | |
7628 | if (bounce_message_text) | |
8768d548 | 7629 | fprintf(fp, "%s", CS bounce_message_text); |
059ec3d9 | 7630 | if (to_sender) |
8768d548 | 7631 | fprintf(fp, |
059ec3d9 PH |
7632 | "\nA message that you sent could not be delivered to one or more of its\n" |
7633 | "recipients. This is a permanent error. The following address(es) failed:\n"); | |
059ec3d9 | 7634 | else |
8768d548 | 7635 | fprintf(fp, |
059ec3d9 PH |
7636 | "\nA message sent by\n\n <%s>\n\n" |
7637 | "could not be delivered to one or more of its recipients. The following\n" | |
7638 | "address(es) failed:\n", sender_address); | |
059ec3d9 | 7639 | } |
8768d548 | 7640 | fputc('\n', fp); |
059ec3d9 PH |
7641 | |
7642 | /* Process the addresses, leaving them on the msgchain if they have a | |
7643 | file name for a return message. (There has already been a check in | |
447d236c PH |
7644 | post_process_one() for the existence of data in the message file.) A TRUE |
7645 | return from print_address_information() means that the address is not | |
7646 | hidden. */ | |
059ec3d9 PH |
7647 | |
7648 | paddr = &msgchain; | |
d6c82d7b | 7649 | for (addr = msgchain; addr; addr = *paddr) |
059ec3d9 | 7650 | { |
8768d548 JH |
7651 | if (print_address_information(addr, fp, US" ", US"\n ", US"")) |
7652 | print_address_error(addr, fp, US""); | |
059ec3d9 PH |
7653 | |
7654 | /* End the final line for the address */ | |
7655 | ||
8768d548 | 7656 | fputc('\n', fp); |
059ec3d9 PH |
7657 | |
7658 | /* Leave on msgchain if there's a return file. */ | |
7659 | ||
7660 | if (addr->return_file >= 0) | |
7661 | { | |
7662 | paddr = &(addr->next); | |
7663 | filecount++; | |
7664 | } | |
7665 | ||
7666 | /* Else save so that we can tick off the recipient when the | |
7667 | message is sent. */ | |
7668 | ||
7669 | else | |
7670 | { | |
7671 | *paddr = addr->next; | |
7672 | addr->next = handled_addr; | |
7673 | handled_addr = addr; | |
7674 | } | |
7675 | } | |
7676 | ||
8768d548 | 7677 | fputc('\n', fp); |
059ec3d9 PH |
7678 | |
7679 | /* Get the next text, whether we need it or not, so as to be | |
7680 | positioned for the one after. */ | |
7681 | ||
7682 | emf_text = next_emf(emf, US"generated text"); | |
7683 | ||
7684 | /* If there were any file messages passed by the local transports, | |
7685 | include them in the message. Then put the address on the handled chain. | |
7686 | In the case of a batch of addresses that were all sent to the same | |
7687 | transport, the return_file field in all of them will contain the same | |
7688 | fd, and the return_filename field in the *last* one will be set (to the | |
7689 | name of the file). */ | |
7690 | ||
c007c974 | 7691 | if (msgchain) |
059ec3d9 PH |
7692 | { |
7693 | address_item *nextaddr; | |
7694 | ||
c007c974 | 7695 | if (emf_text) |
8768d548 | 7696 | fprintf(fp, "%s", CS emf_text); |
c007c974 | 7697 | else |
8768d548 | 7698 | fprintf(fp, |
059ec3d9 PH |
7699 | "The following text was generated during the delivery " |
7700 | "attempt%s:\n", (filecount > 1)? "s" : ""); | |
7701 | ||
d6c82d7b | 7702 | for (addr = msgchain; addr; addr = nextaddr) |
059ec3d9 PH |
7703 | { |
7704 | FILE *fm; | |
7705 | address_item *topaddr = addr; | |
7706 | ||
7707 | /* List all the addresses that relate to this file */ | |
7708 | ||
8768d548 | 7709 | fputc('\n', fp); |
c007c974 | 7710 | while(addr) /* Insurance */ |
059ec3d9 | 7711 | { |
8768d548 | 7712 | print_address_information(addr, fp, US"------ ", US"\n ", |
059ec3d9 | 7713 | US" ------\n"); |
c007c974 | 7714 | if (addr->return_filename) break; |
059ec3d9 PH |
7715 | addr = addr->next; |
7716 | } | |
8768d548 | 7717 | fputc('\n', fp); |
059ec3d9 PH |
7718 | |
7719 | /* Now copy the file */ | |
7720 | ||
d6c82d7b | 7721 | if (!(fm = Ufopen(addr->return_filename, "rb"))) |
8768d548 | 7722 | fprintf(fp, " +++ Exim error... failed to open text file: %s\n", |
059ec3d9 PH |
7723 | strerror(errno)); |
7724 | else | |
7725 | { | |
8768d548 | 7726 | while ((ch = fgetc(fm)) != EOF) fputc(ch, fp); |
f1e894f3 | 7727 | (void)fclose(fm); |
059ec3d9 PH |
7728 | } |
7729 | Uunlink(addr->return_filename); | |
7730 | ||
7731 | /* Can now add to handled chain, first fishing off the next | |
7732 | address on the msgchain. */ | |
7733 | ||
7734 | nextaddr = addr->next; | |
7735 | addr->next = handled_addr; | |
7736 | handled_addr = topaddr; | |
7737 | } | |
8768d548 | 7738 | fputc('\n', fp); |
059ec3d9 PH |
7739 | } |
7740 | ||
6c1c3d1d | 7741 | /* output machine readable part */ |
8c5d388a | 7742 | #ifdef SUPPORT_I18N |
9671784a | 7743 | if (message_smtputf8) |
8768d548 | 7744 | fprintf(fp, "--%s\n" |
9671784a JH |
7745 | "Content-type: message/global-delivery-status\n\n" |
7746 | "Reporting-MTA: dns; %s\n", | |
7747 | bound, smtp_active_hostname); | |
7748 | else | |
7749 | #endif | |
8768d548 | 7750 | fprintf(fp, "--%s\n" |
9671784a JH |
7751 | "Content-type: message/delivery-status\n\n" |
7752 | "Reporting-MTA: dns; %s\n", | |
7753 | bound, smtp_active_hostname); | |
c007c974 JH |
7754 | |
7755 | if (dsn_envid) | |
7756 | { | |
6c1c3d1d WB |
7757 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
7758 | uschar *xdec_envid; | |
7759 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
8768d548 | 7760 | fprintf(fp, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7761 | else |
8768d548 | 7762 | fprintf(fp, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7763 | } |
8768d548 | 7764 | fputc('\n', fp); |
94431adb | 7765 | |
c007c974 | 7766 | for (addr = handled_addr; addr; addr = addr->next) |
6c1c3d1d | 7767 | { |
895fbaf2 | 7768 | host_item * hu; |
8768d548 | 7769 | fprintf(fp, "Action: failed\n" |
8864c2c4 JH |
7770 | "Final-Recipient: rfc822;%s\n" |
7771 | "Status: 5.0.0\n", | |
7772 | addr->address); | |
895fbaf2 JH |
7773 | if ((hu = addr->host_used) && hu->name) |
7774 | { | |
8768d548 | 7775 | fprintf(fp, "Remote-MTA: dns; %s\n", hu->name); |
895fbaf2 | 7776 | #ifdef EXPERIMENTAL_DSN_INFO |
0e8aed8a JH |
7777 | { |
7778 | const uschar * s; | |
895fbaf2 JH |
7779 | if (hu->address) |
7780 | { | |
7781 | uschar * p = hu->port == 25 | |
7782 | ? US"" : string_sprintf(":%d", hu->port); | |
8768d548 | 7783 | fprintf(fp, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p); |
895fbaf2 JH |
7784 | } |
7785 | if ((s = addr->smtp_greeting) && *s) | |
8768d548 | 7786 | fprintf(fp, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s); |
895fbaf2 | 7787 | if ((s = addr->helo_response) && *s) |
8768d548 | 7788 | fprintf(fp, "X-Remote-MTA-helo-response: X-str; %s\n", s); |
895fbaf2 | 7789 | if ((s = addr->message) && *s) |
8768d548 | 7790 | fprintf(fp, "X-Exim-Diagnostic: X-str; %s\n", s); |
0e8aed8a | 7791 | } |
895fbaf2 | 7792 | #endif |
8768d548 | 7793 | print_dsn_diagnostic_code(addr, fp); |
895fbaf2 | 7794 | } |
8768d548 | 7795 | fputc('\n', fp); |
6c1c3d1d | 7796 | } |
6c1c3d1d | 7797 | |
059ec3d9 PH |
7798 | /* Now copy the message, trying to give an intelligible comment if |
7799 | it is too long for it all to be copied. The limit isn't strictly | |
7800 | applied because of the buffering. There is, however, an option | |
7801 | to suppress copying altogether. */ | |
7802 | ||
7803 | emf_text = next_emf(emf, US"copy"); | |
7804 | ||
6c1c3d1d | 7805 | /* add message body |
94431adb | 7806 | we ignore the intro text from template and add |
6c1c3d1d | 7807 | the text for bounce_return_size_limit at the end. |
94431adb | 7808 | |
6c1c3d1d WB |
7809 | bounce_return_message is ignored |
7810 | in case RET= is defined we honor these values | |
7811 | otherwise bounce_return_body is honored. | |
94431adb | 7812 | |
6c1c3d1d WB |
7813 | bounce_return_size_limit is always honored. |
7814 | */ | |
94431adb | 7815 | |
8768d548 | 7816 | fprintf(fp, "--%s\n", bound); |
6c1c3d1d | 7817 | |
0f9d3aea JH |
7818 | dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned"; |
7819 | dsnnotifyhdr = NULL; | |
7820 | topt = topt_add_return_path; | |
7821 | ||
6c1c3d1d WB |
7822 | /* RET=HDRS? top priority */ |
7823 | if (dsn_ret == dsn_ret_hdrs) | |
7824 | topt |= topt_no_body; | |
7825 | else | |
62b7cd08 JH |
7826 | { |
7827 | struct stat statbuf; | |
7828 | ||
6c1c3d1d WB |
7829 | /* no full body return at all? */ |
7830 | if (!bounce_return_body) | |
7831 | { | |
7832 | topt |= topt_no_body; | |
7833 | /* add header if we overrule RET=FULL */ | |
7834 | if (dsn_ret == dsn_ret_full) | |
7835 | dsnnotifyhdr = dsnlimitmsg; | |
7836 | } | |
62b7cd08 | 7837 | /* line length limited... return headers only if oversize */ |
6c1c3d1d | 7838 | /* size limited ... return headers only if limit reached */ |
62b7cd08 JH |
7839 | else if ( max_received_linelength > bounce_return_linesize_limit |
7840 | || ( bounce_return_size_limit > 0 | |
7841 | && fstat(deliver_datafile, &statbuf) == 0 | |
7842 | && statbuf.st_size > max | |
7843 | ) ) | |
7844 | { | |
7845 | topt |= topt_no_body; | |
7846 | dsnnotifyhdr = dsnlimitmsg; | |
6c1c3d1d | 7847 | } |
62b7cd08 | 7848 | } |
94431adb | 7849 | |
8c5d388a | 7850 | #ifdef SUPPORT_I18N |
9671784a JH |
7851 | if (message_smtputf8) |
7852 | fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n" | |
7853 | : "Content-type: message/global\n\n", | |
8768d548 | 7854 | fp); |
9671784a JH |
7855 | else |
7856 | #endif | |
7857 | fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n" | |
7858 | : "Content-type: message/rfc822\n\n", | |
8768d548 | 7859 | fp); |
6c1c3d1d | 7860 | |
8768d548 | 7861 | fflush(fp); |
6c1c3d1d WB |
7862 | transport_filter_argv = NULL; /* Just in case */ |
7863 | return_path = sender_address; /* In case not previously set */ | |
6b46ecc6 | 7864 | { /* Dummy transport for headers add */ |
cab0c277 | 7865 | transport_ctx tctx = {{0}}; |
6d5c916c | 7866 | transport_instance tb = {0}; |
6b46ecc6 | 7867 | |
8768d548 | 7868 | tctx.u.fd = fileno(fp); |
6d5c916c JH |
7869 | tctx.tblock = &tb; |
7870 | tctx.options = topt; | |
7871 | tb.add_headers = dsnnotifyhdr; | |
6b46ecc6 | 7872 | |
ee8b8090 | 7873 | /*XXX no checking for failure! buggy! */ |
42055a33 | 7874 | transport_write_message(&tctx, 0); |
6b46ecc6 | 7875 | } |
8768d548 | 7876 | fflush(fp); |
94431adb | 7877 | |
6c1c3d1d | 7878 | /* we never add the final text. close the file */ |
c007c974 | 7879 | if (emf) |
6c1c3d1d | 7880 | (void)fclose(emf); |
94431adb | 7881 | |
8768d548 | 7882 | fprintf(fp, "\n--%s--\n", bound); |
059ec3d9 PH |
7883 | |
7884 | /* Close the file, which should send an EOF to the child process | |
7885 | that is receiving the message. Wait for it to finish. */ | |
7886 | ||
8768d548 | 7887 | (void)fclose(fp); |
059ec3d9 PH |
7888 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ |
7889 | ||
7890 | /* In the test harness, let the child do it's thing first. */ | |
7891 | ||
8768d548 | 7892 | if (f.running_in_test_harness) millisleep(500); |
059ec3d9 PH |
7893 | |
7894 | /* If the process failed, there was some disaster in setting up the | |
7895 | error message. Unless the message is very old, ensure that addr_defer | |
7896 | is non-null, which will have the effect of leaving the message on the | |
7897 | spool. The failed addresses will get tried again next time. However, we | |
7898 | don't really want this to happen too often, so freeze the message unless | |
7899 | there are some genuine deferred addresses to try. To do this we have | |
7900 | to call spool_write_header() here, because with no genuine deferred | |
7901 | addresses the normal code below doesn't get run. */ | |
7902 | ||
7903 | if (rc != 0) | |
7904 | { | |
7905 | uschar *s = US""; | |
32dfdf8b | 7906 | if (now - received_time.tv_sec < retry_maximum_timeout && !addr_defer) |
059ec3d9 PH |
7907 | { |
7908 | addr_defer = (address_item *)(+1); | |
8768d548 | 7909 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
7910 | deliver_frozen_at = time(NULL); |
7911 | /* Panic-dies on error */ | |
7912 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7913 | s = US" (frozen)"; | |
7914 | } | |
7915 | deliver_msglog("Process failed (%d) when writing error message " | |
7916 | "to %s%s", rc, bounce_recipient, s); | |
7917 | log_write(0, LOG_MAIN, "Process failed (%d) when writing error message " | |
7918 | "to %s%s", rc, bounce_recipient, s); | |
7919 | } | |
7920 | ||
7921 | /* The message succeeded. Ensure that the recipients that failed are | |
7922 | now marked finished with on the spool and their parents updated. */ | |
7923 | ||
7924 | else | |
7925 | { | |
d6c82d7b | 7926 | for (addr = handled_addr; addr; addr = addr->next) |
059ec3d9 PH |
7927 | { |
7928 | address_done(addr, logtod); | |
7929 | child_done(addr, logtod); | |
7930 | } | |
7931 | /* Panic-dies on error */ | |
7932 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7933 | } | |
7934 | } | |
7935 | } | |
7936 | } | |
7937 | ||
8768d548 | 7938 | f.disable_logging = FALSE; /* In case left set */ |
059ec3d9 PH |
7939 | |
7940 | /* Come here from the mua_wrapper case if routing goes wrong */ | |
7941 | ||
7942 | DELIVERY_TIDYUP: | |
7943 | ||
7944 | /* If there are now no deferred addresses, we are done. Preserve the | |
7945 | message log if so configured, and we are using them. Otherwise, sling it. | |
7946 | Then delete the message itself. */ | |
7947 | ||
d6c82d7b | 7948 | if (!addr_defer) |
059ec3d9 | 7949 | { |
41313d92 JH |
7950 | uschar * fname; |
7951 | ||
059ec3d9 PH |
7952 | if (message_logs) |
7953 | { | |
41313d92 | 7954 | fname = spool_fname(US"msglog", message_subdir, id, US""); |
059ec3d9 PH |
7955 | if (preserve_message_logs) |
7956 | { | |
7957 | int rc; | |
41313d92 JH |
7958 | uschar * moname = spool_fname(US"msglog.OLD", US"", id, US""); |
7959 | ||
7960 | if ((rc = Urename(fname, moname)) < 0) | |
059ec3d9 | 7961 | { |
41313d92 JH |
7962 | (void)directory_make(spool_directory, |
7963 | spool_sname(US"msglog.OLD", US""), | |
7964 | MSGLOG_DIRECTORY_MODE, TRUE); | |
7965 | rc = Urename(fname, moname); | |
059ec3d9 PH |
7966 | } |
7967 | if (rc < 0) | |
7968 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the " | |
41313d92 | 7969 | "msglog.OLD directory", fname); |
059ec3d9 PH |
7970 | } |
7971 | else | |
41313d92 | 7972 | if (Uunlink(fname) < 0) |
0761d44e | 7973 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 7974 | fname, strerror(errno)); |
059ec3d9 PH |
7975 | } |
7976 | ||
7977 | /* Remove the two message files. */ | |
8e669ac1 | 7978 | |
41313d92 JH |
7979 | fname = spool_fname(US"input", message_subdir, id, US"-D"); |
7980 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 7981 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 JH |
7982 | fname, strerror(errno)); |
7983 | fname = spool_fname(US"input", message_subdir, id, US"-H"); | |
7984 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 7985 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 7986 | fname, strerror(errno)); |
2ac0e484 PH |
7987 | |
7988 | /* Log the end of this message, with queue time if requested. */ | |
7989 | ||
6c6d6e48 | 7990 | if (LOGGING(queue_time_overall)) |
306c6c77 | 7991 | log_write(0, LOG_MAIN, "Completed QT=%s", string_timesince(&received_time)); |
2ac0e484 PH |
7992 | else |
7993 | log_write(0, LOG_MAIN, "Completed"); | |
0e8a9471 MH |
7994 | |
7995 | /* Unset deliver_freeze so that we won't try to move the spool files further down */ | |
8768d548 | 7996 | f.deliver_freeze = FALSE; |
14a465c3 | 7997 | |
0cbf2b82 | 7998 | #ifndef DISABLE_EVENT |
774ef2d7 | 7999 | (void) event_raise(event_action, US"msg:complete", NULL); |
14a465c3 | 8000 | #endif |
fa41615d | 8001 | } |
059ec3d9 PH |
8002 | |
8003 | /* If there are deferred addresses, we are keeping this message because it is | |
8004 | not yet completed. Lose any temporary files that were catching output from | |
8005 | pipes for any of the deferred addresses, handle one-time aliases, and see if | |
8006 | the message has been on the queue for so long that it is time to send a warning | |
8007 | message to the sender, unless it is a mailer-daemon. If all deferred addresses | |
8008 | have the same domain, we can set deliver_domain for the expansion of | |
8009 | delay_warning_ condition - if any of them are pipes, files, or autoreplies, use | |
8010 | the parent's domain. | |
8011 | ||
8012 | If all the deferred addresses have an error number that indicates "retry time | |
8013 | not reached", skip sending the warning message, because it won't contain the | |
8014 | reason for the delay. It will get sent at the next real delivery attempt. | |
de6f74f2 JH |
8015 | Exception: for retries caused by a remote peer we use the error message |
8016 | store in the retry DB as the reason. | |
059ec3d9 PH |
8017 | However, if at least one address has tried, we'd better include all of them in |
8018 | the message. | |
8019 | ||
8020 | If we can't make a process to send the message, don't worry. | |
8021 | ||
8022 | For mailing list expansions we want to send the warning message to the | |
8023 | mailing list manager. We can't do a perfect job here, as some addresses may | |
8024 | have different errors addresses, but if we take the errors address from | |
8025 | each deferred address it will probably be right in most cases. | |
8026 | ||
8027 | If addr_defer == +1, it means there was a problem sending an error message | |
8028 | for failed addresses, and there were no "real" deferred addresses. The value | |
8029 | was set just to keep the message on the spool, so there is nothing to do here. | |
8030 | */ | |
8031 | ||
8032 | else if (addr_defer != (address_item *)(+1)) | |
8033 | { | |
059ec3d9 | 8034 | uschar *recipients = US""; |
de6f74f2 | 8035 | BOOL want_warning_msg = FALSE; |
059ec3d9 | 8036 | |
d6c82d7b JH |
8037 | deliver_domain = testflag(addr_defer, af_pfr) |
8038 | ? addr_defer->parent->domain : addr_defer->domain; | |
059ec3d9 | 8039 | |
d7978c0f | 8040 | for (address_item * addr = addr_defer; addr; addr = addr->next) |
059ec3d9 PH |
8041 | { |
8042 | address_item *otaddr; | |
8043 | ||
de6f74f2 | 8044 | if (addr->basic_errno > ERRNO_WARN_BASE) want_warning_msg = TRUE; |
059ec3d9 | 8045 | |
d6c82d7b | 8046 | if (deliver_domain) |
059ec3d9 | 8047 | { |
55414b25 JH |
8048 | const uschar *d = testflag(addr, af_pfr) |
8049 | ? addr->parent->domain : addr->domain; | |
059ec3d9 PH |
8050 | |
8051 | /* The domain may be unset for an address that has never been routed | |
8052 | because the system filter froze the message. */ | |
8053 | ||
d6c82d7b JH |
8054 | if (!d || Ustrcmp(d, deliver_domain) != 0) |
8055 | deliver_domain = NULL; | |
059ec3d9 PH |
8056 | } |
8057 | ||
d6c82d7b | 8058 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 PH |
8059 | |
8060 | /* Handle the case of one-time aliases. If any address in the ancestry | |
8061 | of this one is flagged, ensure it is in the recipients list, suitably | |
8062 | flagged, and that its parent is marked delivered. */ | |
8063 | ||
d6c82d7b JH |
8064 | for (otaddr = addr; otaddr; otaddr = otaddr->parent) |
8065 | if (otaddr->onetime_parent) break; | |
059ec3d9 | 8066 | |
d6c82d7b | 8067 | if (otaddr) |
059ec3d9 PH |
8068 | { |
8069 | int i; | |
8070 | int t = recipients_count; | |
8071 | ||
8072 | for (i = 0; i < recipients_count; i++) | |
8073 | { | |
8074 | uschar *r = recipients_list[i].address; | |
8075 | if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i; | |
8076 | if (Ustrcmp(otaddr->address, r) == 0) break; | |
8077 | } | |
8078 | ||
8079 | /* Didn't find the address already in the list, and did find the | |
d1f9fb42 JH |
8080 | ultimate parent's address in the list, and they really are different |
8081 | (i.e. not from an identity-redirect). After adding the recipient, | |
059ec3d9 PH |
8082 | update the errors address in the recipients list. */ |
8083 | ||
d1f9fb42 JH |
8084 | if ( i >= recipients_count && t < recipients_count |
8085 | && Ustrcmp(otaddr->address, otaddr->parent->address) != 0) | |
059ec3d9 PH |
8086 | { |
8087 | DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n", | |
8088 | otaddr->address, otaddr->parent->address); | |
8089 | receive_add_recipient(otaddr->address, t); | |
d43cbe25 | 8090 | recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address; |
059ec3d9 PH |
8091 | tree_add_nonrecipient(otaddr->parent->address); |
8092 | update_spool = TRUE; | |
8093 | } | |
8094 | } | |
8095 | ||
8096 | /* Except for error messages, ensure that either the errors address for | |
8097 | this deferred address or, if there is none, the sender address, is on the | |
8098 | list of recipients for a warning message. */ | |
8099 | ||
d1f9fb42 JH |
8100 | if (sender_address[0]) |
8101 | { | |
8102 | uschar * s = addr->prop.errors_address; | |
8103 | if (!s) s = sender_address; | |
8104 | if (Ustrstr(recipients, s) == NULL) | |
8105 | recipients = string_sprintf("%s%s%s", recipients, | |
8106 | recipients[0] ? "," : "", s); | |
8107 | } | |
059ec3d9 PH |
8108 | } |
8109 | ||
8110 | /* Send a warning message if the conditions are right. If the condition check | |
8111 | fails because of a lookup defer, there is nothing we can do. The warning | |
8112 | is not sent. Another attempt will be made at the next delivery attempt (if | |
8113 | it also defers). */ | |
8114 | ||
8768d548 | 8115 | if ( !f.queue_2stage |
de6f74f2 | 8116 | && want_warning_msg |
ea97267c JH |
8117 | && ( !(addr_defer->dsn_flags & rf_dsnflags) |
8118 | || addr_defer->dsn_flags & rf_notify_delay | |
50dc7409 JH |
8119 | ) |
8120 | && delay_warning[1] > 0 | |
8121 | && sender_address[0] != 0 | |
d6c82d7b | 8122 | && ( !delay_warning_condition |
50dc7409 JH |
8123 | || expand_check_condition(delay_warning_condition, |
8124 | US"delay_warning", US"option") | |
8125 | ) | |
8126 | ) | |
059ec3d9 PH |
8127 | { |
8128 | int count; | |
8129 | int show_time; | |
32dfdf8b | 8130 | int queue_time = time(NULL) - received_time.tv_sec; |
059ec3d9 PH |
8131 | |
8132 | /* When running in the test harness, there's an option that allows us to | |
8133 | fudge this time so as to get repeatability of the tests. Take the first | |
8134 | time off the list. In queue runs, the list pointer gets updated in the | |
8135 | calling process. */ | |
8136 | ||
8768d548 | 8137 | if (f.running_in_test_harness && fudged_queue_times[0] != 0) |
059ec3d9 PH |
8138 | { |
8139 | int qt = readconf_readtime(fudged_queue_times, '/', FALSE); | |
8140 | if (qt >= 0) | |
8141 | { | |
8142 | DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n", | |
8143 | fudged_queue_times); | |
8144 | queue_time = qt; | |
8145 | } | |
8146 | } | |
8147 | ||
8148 | /* See how many warnings we should have sent by now */ | |
8149 | ||
8150 | for (count = 0; count < delay_warning[1]; count++) | |
8151 | if (queue_time < delay_warning[count+2]) break; | |
8152 | ||
8153 | show_time = delay_warning[count+1]; | |
8154 | ||
8155 | if (count >= delay_warning[1]) | |
8156 | { | |
8157 | int extra; | |
8158 | int last_gap = show_time; | |
8159 | if (count > 1) last_gap -= delay_warning[count]; | |
8160 | extra = (queue_time - delay_warning[count+1])/last_gap; | |
8161 | show_time += last_gap * extra; | |
8162 | count += extra; | |
8163 | } | |
8164 | ||
8165 | DEBUG(D_deliver) | |
8166 | { | |
de6f74f2 | 8167 | debug_printf("time on queue = %s id %s addr %s\n", readconf_printtime(queue_time), message_id, addr_defer->address); |
059ec3d9 PH |
8168 | debug_printf("warning counts: required %d done %d\n", count, |
8169 | warning_count); | |
8170 | } | |
8171 | ||
8172 | /* We have computed the number of warnings there should have been by now. | |
8173 | If there haven't been enough, send one, and up the count to what it should | |
8174 | have been. */ | |
8175 | ||
8176 | if (warning_count < count) | |
8177 | { | |
8178 | header_line *h; | |
8179 | int fd; | |
8180 | pid_t pid = child_open_exim(&fd); | |
8181 | ||
8182 | if (pid > 0) | |
8183 | { | |
8184 | uschar *wmf_text; | |
8185 | FILE *wmf = NULL; | |
8186 | FILE *f = fdopen(fd, "wb"); | |
45500060 | 8187 | uschar * bound; |
cab0c277 | 8188 | transport_ctx tctx = {{0}}; |
059ec3d9 | 8189 | |
c007c974 | 8190 | if (warn_message_file) |
d6c82d7b | 8191 | if (!(wmf = Ufopen(warn_message_file, "rb"))) |
059ec3d9 PH |
8192 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning " |
8193 | "message texts: %s", warn_message_file, strerror(errno)); | |
059ec3d9 PH |
8194 | |
8195 | warnmsg_recipients = recipients; | |
d6c82d7b JH |
8196 | warnmsg_delay = queue_time < 120*60 |
8197 | ? string_sprintf("%d minutes", show_time/60) | |
8198 | : string_sprintf("%d hours", show_time/3600); | |
059ec3d9 | 8199 | |
c007c974 | 8200 | if (errors_reply_to) |
059ec3d9 | 8201 | fprintf(f, "Reply-To: %s\n", errors_reply_to); |
456682f5 | 8202 | fprintf(f, "Auto-Submitted: auto-replied\n"); |
0e22dfd1 | 8203 | moan_write_from(f); |
059ec3d9 PH |
8204 | fprintf(f, "To: %s\n", recipients); |
8205 | ||
6c1c3d1d | 8206 | /* generated boundary string and output MIME-Headers */ |
45500060 | 8207 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 JH |
8208 | |
8209 | fprintf(f, "Content-Type: multipart/report;" | |
8210 | " report-type=delivery-status; boundary=%s\n" | |
8211 | "MIME-Version: 1.0\n", | |
45500060 | 8212 | bound); |
6c1c3d1d | 8213 | |
c007c974 | 8214 | if ((wmf_text = next_emf(wmf, US"header"))) |
059ec3d9 PH |
8215 | fprintf(f, "%s\n", wmf_text); |
8216 | else | |
8217 | fprintf(f, "Subject: Warning: message %s delayed %s\n\n", | |
8218 | message_id, warnmsg_delay); | |
8219 | ||
6c1c3d1d | 8220 | /* output human readable part as text/plain section */ |
c007c974 JH |
8221 | fprintf(f, "--%s\n" |
8222 | "Content-type: text/plain; charset=us-ascii\n\n", | |
45500060 | 8223 | bound); |
6c1c3d1d | 8224 | |
c007c974 JH |
8225 | if ((wmf_text = next_emf(wmf, US"intro"))) |
8226 | fprintf(f, "%s", CS wmf_text); | |
8227 | else | |
059ec3d9 PH |
8228 | { |
8229 | fprintf(f, | |
8230 | "This message was created automatically by mail delivery software.\n"); | |
8231 | ||
8232 | if (Ustrcmp(recipients, sender_address) == 0) | |
8233 | fprintf(f, | |
8234 | "A message that you sent has not yet been delivered to one or more of its\n" | |
8235 | "recipients after more than "); | |
8236 | ||
c007c974 JH |
8237 | else |
8238 | fprintf(f, | |
059ec3d9 PH |
8239 | "A message sent by\n\n <%s>\n\n" |
8240 | "has not yet been delivered to one or more of its recipients after more than \n", | |
c007c974 | 8241 | sender_address); |
059ec3d9 | 8242 | |
c007c974 JH |
8243 | fprintf(f, "%s on the queue on %s.\n\n" |
8244 | "The message identifier is: %s\n", | |
8245 | warnmsg_delay, primary_hostname, message_id); | |
059ec3d9 | 8246 | |
d6c82d7b | 8247 | for (h = header_list; h; h = h->next) |
059ec3d9 PH |
8248 | if (strncmpic(h->text, US"Subject:", 8) == 0) |
8249 | fprintf(f, "The subject of the message is: %s", h->text + 9); | |
8250 | else if (strncmpic(h->text, US"Date:", 5) == 0) | |
8251 | fprintf(f, "The date of the message is: %s", h->text + 6); | |
c007c974 | 8252 | fputc('\n', f); |
059ec3d9 PH |
8253 | |
8254 | fprintf(f, "The address%s to which the message has not yet been " | |
8255 | "delivered %s:\n", | |
c007c974 JH |
8256 | !addr_defer->next ? "" : "es", |
8257 | !addr_defer->next ? "is": "are"); | |
059ec3d9 PH |
8258 | } |
8259 | ||
447d236c | 8260 | /* List the addresses, with error information if allowed */ |
059ec3d9 | 8261 | |
6c1c3d1d WB |
8262 | /* store addr_defer for machine readable part */ |
8263 | address_item *addr_dsndefer = addr_defer; | |
c007c974 JH |
8264 | fputc('\n', f); |
8265 | while (addr_defer) | |
059ec3d9 PH |
8266 | { |
8267 | address_item *addr = addr_defer; | |
8268 | addr_defer = addr->next; | |
447d236c PH |
8269 | if (print_address_information(addr, f, US" ", US"\n ", US"")) |
8270 | print_address_error(addr, f, US"Delay reason: "); | |
c007c974 | 8271 | fputc('\n', f); |
059ec3d9 | 8272 | } |
c007c974 | 8273 | fputc('\n', f); |
059ec3d9 PH |
8274 | |
8275 | /* Final text */ | |
8276 | ||
c007c974 | 8277 | if (wmf) |
059ec3d9 | 8278 | { |
c007c974 JH |
8279 | if ((wmf_text = next_emf(wmf, US"final"))) |
8280 | fprintf(f, "%s", CS wmf_text); | |
f1e894f3 | 8281 | (void)fclose(wmf); |
059ec3d9 PH |
8282 | } |
8283 | else | |
8284 | { | |
8285 | fprintf(f, | |
8286 | "No action is required on your part. Delivery attempts will continue for\n" | |
8287 | "some time, and this warning may be repeated at intervals if the message\n" | |
8288 | "remains undelivered. Eventually the mail delivery software will give up,\n" | |
8289 | "and when that happens, the message will be returned to you.\n"); | |
8290 | } | |
8291 | ||
6c1c3d1d | 8292 | /* output machine readable part */ |
c007c974 JH |
8293 | fprintf(f, "\n--%s\n" |
8294 | "Content-type: message/delivery-status\n\n" | |
8295 | "Reporting-MTA: dns; %s\n", | |
45500060 | 8296 | bound, |
c007c974 | 8297 | smtp_active_hostname); |
94431adb | 8298 | |
c007c974 JH |
8299 | |
8300 | if (dsn_envid) | |
8301 | { | |
6c1c3d1d WB |
8302 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
8303 | uschar *xdec_envid; | |
8304 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
8305 | fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid); | |
8306 | else | |
968178ac | 8307 | fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 8308 | } |
c007c974 | 8309 | fputc('\n', f); |
6c1c3d1d | 8310 | |
1c5b1499 | 8311 | for ( ; addr_dsndefer; addr_dsndefer = addr_dsndefer->next) |
6c1c3d1d | 8312 | { |
c007c974 | 8313 | if (addr_dsndefer->dsn_orcpt) |
1c5b1499 | 8314 | fprintf(f, "Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt); |
c007c974 | 8315 | |
1c5b1499 JH |
8316 | fprintf(f, "Action: delayed\n" |
8317 | "Final-Recipient: rfc822;%s\n" | |
8318 | "Status: 4.0.0\n", | |
8319 | addr_dsndefer->address); | |
c007c974 | 8320 | if (addr_dsndefer->host_used && addr_dsndefer->host_used->name) |
21bc4865 | 8321 | { |
94431adb | 8322 | fprintf(f, "Remote-MTA: dns; %s\n", |
21bc4865 WB |
8323 | addr_dsndefer->host_used->name); |
8324 | print_dsn_diagnostic_code(addr_dsndefer, f); | |
8325 | } | |
1c5b1499 | 8326 | fputc('\n', f); |
6c1c3d1d WB |
8327 | } |
8328 | ||
1c5b1499 | 8329 | fprintf(f, "--%s\n" |
c007c974 | 8330 | "Content-type: text/rfc822-headers\n\n", |
45500060 | 8331 | bound); |
6c1c3d1d WB |
8332 | |
8333 | fflush(f); | |
8334 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
42055a33 | 8335 | tctx.u.fd = fileno(f); |
6b46ecc6 | 8336 | tctx.options = topt_add_return_path | topt_no_body; |
6c1c3d1d WB |
8337 | transport_filter_argv = NULL; /* Just in case */ |
8338 | return_path = sender_address; /* In case not previously set */ | |
6b46ecc6 | 8339 | |
6c1c3d1d | 8340 | /* Write the original email out */ |
ee8b8090 | 8341 | /*XXX no checking for failure! buggy! */ |
42055a33 | 8342 | transport_write_message(&tctx, 0); |
6c1c3d1d WB |
8343 | fflush(f); |
8344 | ||
45500060 | 8345 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
8346 | |
8347 | fflush(f); | |
6c1c3d1d | 8348 | |
059ec3d9 PH |
8349 | /* Close and wait for child process to complete, without a timeout. |
8350 | If there's an error, don't update the count. */ | |
8351 | ||
f1e894f3 | 8352 | (void)fclose(f); |
059ec3d9 PH |
8353 | if (child_close(pid, 0) == 0) |
8354 | { | |
8355 | warning_count = count; | |
8356 | update_spool = TRUE; /* Ensure spool rewritten */ | |
8357 | } | |
8358 | } | |
8359 | } | |
8360 | } | |
8361 | ||
8362 | /* Clear deliver_domain */ | |
8363 | ||
8364 | deliver_domain = NULL; | |
8365 | ||
8366 | /* If this was a first delivery attempt, unset the first time flag, and | |
8367 | ensure that the spool gets updated. */ | |
8368 | ||
8768d548 | 8369 | if (f.deliver_firsttime) |
059ec3d9 | 8370 | { |
8768d548 | 8371 | f.deliver_firsttime = FALSE; |
059ec3d9 PH |
8372 | update_spool = TRUE; |
8373 | } | |
8374 | ||
8375 | /* If delivery was frozen and freeze_tell is set, generate an appropriate | |
8376 | message, unless the message is a local error message (to avoid loops). Then | |
8377 | log the freezing. If the text in "frozen_info" came from a system filter, | |
8378 | it has been escaped into printing characters so as not to mess up log lines. | |
8379 | For the "tell" message, we turn \n back into newline. Also, insert a newline | |
8380 | near the start instead of the ": " string. */ | |
8381 | ||
8768d548 | 8382 | if (f.deliver_freeze) |
059ec3d9 | 8383 | { |
8768d548 | 8384 | if (freeze_tell && freeze_tell[0] != 0 && !f.local_error_message) |
059ec3d9 PH |
8385 | { |
8386 | uschar *s = string_copy(frozen_info); | |
8387 | uschar *ss = Ustrstr(s, " by the system filter: "); | |
8388 | ||
8389 | if (ss != NULL) | |
8390 | { | |
8391 | ss[21] = '.'; | |
8392 | ss[22] = '\n'; | |
8393 | } | |
8394 | ||
8395 | ss = s; | |
8396 | while (*ss != 0) | |
8397 | { | |
8398 | if (*ss == '\\' && ss[1] == 'n') | |
8399 | { | |
8400 | *ss++ = ' '; | |
8401 | *ss++ = '\n'; | |
8402 | } | |
8403 | else ss++; | |
8404 | } | |
8405 | moan_tell_someone(freeze_tell, addr_defer, US"Message frozen", | |
8406 | "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id, | |
8407 | s, sender_address); | |
8408 | } | |
8409 | ||
8410 | /* Log freezing just before we update the -H file, to minimize the chance | |
8411 | of a race problem. */ | |
8412 | ||
8413 | deliver_msglog("*** Frozen%s\n", frozen_info); | |
8414 | log_write(0, LOG_MAIN, "Frozen%s", frozen_info); | |
8415 | } | |
8416 | ||
8417 | /* If there have been any updates to the non-recipients list, or other things | |
8418 | that get written to the spool, we must now update the spool header file so | |
8419 | that it has the right information for the next delivery attempt. If there | |
8420 | was more than one address being delivered, the header_change update is done | |
8421 | earlier, in case one succeeds and then something crashes. */ | |
8422 | ||
8423 | DEBUG(D_deliver) | |
8424 | debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n", | |
8768d548 | 8425 | update_spool, f.header_rewritten); |
059ec3d9 | 8426 | |
8768d548 | 8427 | if (update_spool || f.header_rewritten) |
059ec3d9 PH |
8428 | /* Panic-dies on error */ |
8429 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
8430 | } | |
8431 | ||
8432 | /* Finished with the message log. If the message is complete, it will have | |
8433 | been unlinked or renamed above. */ | |
8434 | ||
f1e894f3 | 8435 | if (message_logs) (void)fclose(message_log); |
059ec3d9 PH |
8436 | |
8437 | /* Now we can close and remove the journal file. Its only purpose is to record | |
8438 | successfully completed deliveries asap so that this information doesn't get | |
8439 | lost if Exim (or the machine) crashes. Forgetting about a failed delivery is | |
8440 | not serious, as trying it again is not harmful. The journal might not be open | |
8441 | if all addresses were deferred at routing or directing. Nevertheless, we must | |
8442 | remove it if it exists (may have been lying around from a crash during the | |
8443 | previous delivery attempt). We don't remove the journal if a delivery | |
8444 | subprocess failed to pass back delivery information; this is controlled by | |
8445 | the remove_journal flag. When the journal is left, we also don't move the | |
8446 | message off the main spool if frozen and the option is set. It should get moved | |
8447 | at the next attempt, after the journal has been inspected. */ | |
8448 | ||
f1e894f3 | 8449 | if (journal_fd >= 0) (void)close(journal_fd); |
059ec3d9 PH |
8450 | |
8451 | if (remove_journal) | |
8452 | { | |
41313d92 JH |
8453 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
8454 | ||
8455 | if (Uunlink(fname) < 0 && errno != ENOENT) | |
8456 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", fname, | |
059ec3d9 PH |
8457 | strerror(errno)); |
8458 | ||
4c04137d | 8459 | /* Move the message off the spool if requested */ |
059ec3d9 | 8460 | |
a7538db1 | 8461 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
8768d548 | 8462 | if (f.deliver_freeze && move_frozen_messages) |
059ec3d9 | 8463 | (void)spool_move_message(id, message_subdir, US"", US"F"); |
a7538db1 | 8464 | #endif |
059ec3d9 PH |
8465 | } |
8466 | ||
8467 | /* Closing the data file frees the lock; if the file has been unlinked it | |
8468 | will go away. Otherwise the message becomes available for another process | |
8469 | to try delivery. */ | |
8470 | ||
f1e894f3 | 8471 | (void)close(deliver_datafile); |
059ec3d9 PH |
8472 | deliver_datafile = -1; |
8473 | DEBUG(D_deliver) debug_printf("end delivery of %s\n", id); | |
8474 | ||
8475 | /* It is unlikely that there will be any cached resources, since they are | |
8476 | released after routing, and in the delivery subprocesses. However, it's | |
8477 | possible for an expansion for something afterwards (for example, | |
8478 | expand_check_condition) to do a lookup. We must therefore be sure everything is | |
8479 | released. */ | |
8480 | ||
8481 | search_tidyup(); | |
faa05a93 | 8482 | acl_where = ACL_WHERE_UNKNOWN; |
059ec3d9 PH |
8483 | return final_yield; |
8484 | } | |
8485 | ||
476be7e2 JH |
8486 | |
8487 | ||
8488 | void | |
8489 | deliver_init(void) | |
8490 | { | |
10ac8d7f JH |
8491 | #ifdef EXIM_TFO_PROBE |
8492 | tfo_probe(); | |
8493 | #else | |
8768d548 | 8494 | f.tcp_fastopen_ok = TRUE; |
10ac8d7f JH |
8495 | #endif |
8496 | ||
8497 | ||
476be7e2 JH |
8498 | if (!regex_PIPELINING) regex_PIPELINING = |
8499 | regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE); | |
8500 | ||
8501 | if (!regex_SIZE) regex_SIZE = | |
8502 | regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE); | |
8503 | ||
8504 | if (!regex_AUTH) regex_AUTH = | |
ee8b8090 | 8505 | regex_must_compile(AUTHS_REGEX, FALSE, TRUE); |
476be7e2 JH |
8506 | |
8507 | #ifdef SUPPORT_TLS | |
8508 | if (!regex_STARTTLS) regex_STARTTLS = | |
8509 | regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE); | |
8ac90765 JH |
8510 | |
8511 | # ifdef EXPERIMENTAL_REQUIRETLS | |
8512 | if (!regex_REQUIRETLS) regex_REQUIRETLS = | |
8513 | regex_must_compile(US"\\n250[\\s\\-]REQUIRETLS(\\s|\\n|$)", FALSE, TRUE); | |
8514 | # endif | |
476be7e2 JH |
8515 | #endif |
8516 | ||
f98442df JH |
8517 | if (!regex_CHUNKING) regex_CHUNKING = |
8518 | regex_must_compile(US"\\n250[\\s\\-]CHUNKING(\\s|\\n|$)", FALSE, TRUE); | |
8519 | ||
476be7e2 JH |
8520 | #ifndef DISABLE_PRDR |
8521 | if (!regex_PRDR) regex_PRDR = | |
8522 | regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE); | |
8523 | #endif | |
8524 | ||
8c5d388a | 8525 | #ifdef SUPPORT_I18N |
7ade712c JH |
8526 | if (!regex_UTF8) regex_UTF8 = |
8527 | regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE); | |
8528 | #endif | |
8529 | ||
476be7e2 JH |
8530 | if (!regex_DSN) regex_DSN = |
8531 | regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE); | |
8532 | ||
8533 | if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA = | |
8534 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
ee8b8090 JH |
8535 | |
8536 | #ifdef EXPERIMENTAL_PIPE_CONNECT | |
8537 | if (!regex_EARLY_PIPE) regex_EARLY_PIPE = | |
8538 | regex_must_compile(US"\\n250[\\s\\-]" EARLY_PIPE_FEATURE_NAME "(\\s|\\n|$)", FALSE, TRUE); | |
8539 | #endif | |
476be7e2 JH |
8540 | } |
8541 | ||
8542 | ||
a39bd74d JB |
8543 | uschar * |
8544 | deliver_get_sender_address (uschar * id) | |
8545 | { | |
dadff1d4 HSHR |
8546 | int rc; |
8547 | uschar * new_sender_address, | |
8548 | * save_sender_address; | |
8768d548 | 8549 | BOOL save_qr = f.queue_running; |
41313d92 | 8550 | uschar * spoolname; |
dadff1d4 | 8551 | |
789f8a4f JH |
8552 | /* make spool_open_datafile non-noisy on fail */ |
8553 | ||
8768d548 | 8554 | f.queue_running = TRUE; |
789f8a4f JH |
8555 | |
8556 | /* Side effect: message_subdir is set for the (possibly split) spool directory */ | |
8557 | ||
8558 | deliver_datafile = spool_open_datafile(id); | |
8768d548 | 8559 | f.queue_running = save_qr; |
789f8a4f | 8560 | if (deliver_datafile < 0) |
a39bd74d JB |
8561 | return NULL; |
8562 | ||
dadff1d4 HSHR |
8563 | /* Save and restore the global sender_address. I'm not sure if we should |
8564 | not save/restore all the other global variables too, because | |
8565 | spool_read_header() may change all of them. But OTOH, when this | |
8566 | deliver_get_sender_address() gets called, the current message is done | |
8567 | already and nobody needs the globals anymore. (HS12, 2015-08-21) */ | |
8568 | ||
41313d92 | 8569 | spoolname = string_sprintf("%s-H", id); |
dadff1d4 HSHR |
8570 | save_sender_address = sender_address; |
8571 | ||
8572 | rc = spool_read_header(spoolname, TRUE, TRUE); | |
8573 | ||
8574 | new_sender_address = sender_address; | |
8575 | sender_address = save_sender_address; | |
8576 | ||
8577 | if (rc != spool_read_OK) | |
a39bd74d JB |
8578 | return NULL; |
8579 | ||
dadff1d4 HSHR |
8580 | assert(new_sender_address); |
8581 | ||
a39bd74d JB |
8582 | (void)close(deliver_datafile); |
8583 | deliver_datafile = -1; | |
8584 | ||
dadff1d4 | 8585 | return new_sender_address; |
a39bd74d JB |
8586 | } |
8587 | ||
57cc2785 JH |
8588 | |
8589 | ||
8590 | void | |
8591 | delivery_re_exec(int exec_type) | |
8592 | { | |
cab0c277 | 8593 | uschar * where; |
57cc2785 | 8594 | |
74f1a423 | 8595 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 | 8596 | { |
48334568 | 8597 | int channel_fd = cutthrough.cctx.sock; |
57cc2785 JH |
8598 | |
8599 | smtp_peer_options = cutthrough.peer_options; | |
8600 | continue_sequence = 0; | |
8601 | ||
8602 | #ifdef SUPPORT_TLS | |
8603 | if (cutthrough.is_tls) | |
8604 | { | |
48334568 JH |
8605 | int pfd[2], pid; |
8606 | ||
14de8063 | 8607 | smtp_peer_options |= OPTION_TLS; |
57cc2785 JH |
8608 | sending_ip_address = cutthrough.snd_ip; |
8609 | sending_port = cutthrough.snd_port; | |
8610 | ||
cab0c277 | 8611 | where = US"socketpair"; |
57cc2785 JH |
8612 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) != 0) |
8613 | goto fail; | |
8614 | ||
cab0c277 | 8615 | where = US"fork"; |
57cc2785 JH |
8616 | if ((pid = fork()) < 0) |
8617 | goto fail; | |
8618 | ||
6c454556 | 8619 | else if (pid == 0) /* child: fork again to totally disconnect */ |
5facbeaa | 8620 | { |
8768d548 | 8621 | if (f.running_in_test_harness) millisleep(100); /* let parent debug out */ |
d097cc73 | 8622 | /* does not return */ |
74f1a423 JH |
8623 | smtp_proxy_tls(cutthrough.cctx.tls_ctx, big_buffer, big_buffer_size, |
8624 | pfd, 5*60); | |
5facbeaa | 8625 | } |
57cc2785 | 8626 | |
d097cc73 | 8627 | DEBUG(D_transport) debug_printf("proxy-proc inter-pid %d\n", pid); |
e47252f5 | 8628 | close(pfd[0]); |
60272099 | 8629 | waitpid(pid, NULL, 0); |
57cc2785 JH |
8630 | (void) close(channel_fd); /* release the client socket */ |
8631 | channel_fd = pfd[1]; | |
8632 | } | |
8633 | #endif | |
8634 | ||
8635 | transport_do_pass_socket(cutthrough.transport, cutthrough.host.name, | |
8636 | cutthrough.host.address, message_id, channel_fd); | |
8637 | } | |
8638 | else | |
8639 | { | |
ef698bf6 | 8640 | cancel_cutthrough_connection(TRUE, US"non-continued delivery"); |
57cc2785 JH |
8641 | (void) child_exec_exim(exec_type, FALSE, NULL, FALSE, 2, US"-Mc", message_id); |
8642 | } | |
cab0c277 | 8643 | return; /* compiler quietening; control does not reach here. */ |
57cc2785 | 8644 | |
13c7874e | 8645 | #ifdef SUPPORT_TLS |
57cc2785 JH |
8646 | fail: |
8647 | log_write(0, | |
8648 | LOG_MAIN | (exec_type == CEE_EXEC_EXIT ? LOG_PANIC : LOG_PANIC_DIE), | |
cab0c277 | 8649 | "delivery re-exec %s failed: %s", where, strerror(errno)); |
57cc2785 JH |
8650 | |
8651 | /* Get here if exec_type == CEE_EXEC_EXIT. | |
8652 | Note: this must be _exit(), not exit(). */ | |
8653 | ||
8654 | _exit(EX_EXECFAILED); | |
13c7874e | 8655 | #endif |
57cc2785 JH |
8656 | } |
8657 | ||
67d81c10 JH |
8658 | /* vi: aw ai sw=2 |
8659 | */ | |
059ec3d9 | 8660 | /* End of deliver.c */ |