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 | 69 | static address_item *addr_senddsn = NULL; |
059ec3d9 PH |
70 | |
71 | static FILE *message_log = NULL; | |
72 | static BOOL update_spool; | |
73 | static BOOL remove_journal; | |
74 | static int parcount = 0; | |
75 | static pardata *parlist = NULL; | |
76 | static int return_count; | |
77 | static uschar *frozen_info = US""; | |
78 | static uschar *used_return_path = NULL; | |
79 | ||
059ec3d9 PH |
80 | |
81 | ||
ee250936 JH |
82 | /************************************************* |
83 | * read as much as requested * | |
84 | *************************************************/ | |
85 | ||
86 | /* The syscall read(2) doesn't always returns as much as we want. For | |
87 | several reasons it might get less. (Not talking about signals, as syscalls | |
88 | are restartable). When reading from a network or pipe connection the sender | |
89 | might send in smaller chunks, with delays between these chunks. The read(2) | |
90 | may return such a chunk. | |
91 | ||
92 | The more the writer writes and the smaller the pipe between write and read is, | |
93 | the more we get the chance of reading leass than requested. (See bug 2130) | |
94 | ||
95 | This function read(2)s until we got all the data we *requested*. | |
96 | ||
97 | Note: This function may block. Use it only if you're sure about the | |
98 | amount of data you will get. | |
99 | ||
100 | Argument: | |
101 | fd the file descriptor to read from | |
102 | buffer pointer to a buffer of size len | |
103 | len the requested(!) amount of bytes | |
104 | ||
105 | Returns: the amount of bytes read | |
106 | */ | |
107 | static ssize_t | |
108 | readn(int fd, void * buffer, size_t len) | |
109 | { | |
6d95688d JH |
110 | uschar * next = buffer; |
111 | uschar * end = next + len; | |
ee250936 | 112 | |
6d95688d JH |
113 | while (next < end) |
114 | { | |
115 | ssize_t got = read(fd, next, end - next); | |
ee250936 | 116 | |
6d95688d JH |
117 | /* I'm not sure if there are signals that can interrupt us, |
118 | for now I assume the worst */ | |
119 | if (got == -1 && errno == EINTR) continue; | |
120 | if (got <= 0) return next - US buffer; | |
121 | next += got; | |
122 | } | |
ee250936 | 123 | |
6d95688d | 124 | return len; |
ee250936 JH |
125 | } |
126 | ||
127 | ||
059ec3d9 PH |
128 | /************************************************* |
129 | * Make a new address item * | |
130 | *************************************************/ | |
131 | ||
132 | /* This function gets the store and initializes with default values. The | |
133 | transport_return value defaults to DEFER, so that any unexpected failure to | |
134 | deliver does not wipe out the message. The default unique string is set to a | |
135 | copy of the address, so that its domain can be lowercased. | |
136 | ||
137 | Argument: | |
138 | address the RFC822 address string | |
139 | copy force a copy of the address | |
140 | ||
141 | Returns: a pointer to an initialized address_item | |
142 | */ | |
143 | ||
144 | address_item * | |
145 | deliver_make_addr(uschar *address, BOOL copy) | |
146 | { | |
f3ebb786 | 147 | address_item *addr = store_get(sizeof(address_item), FALSE); |
059ec3d9 PH |
148 | *addr = address_defaults; |
149 | if (copy) address = string_copy(address); | |
150 | addr->address = address; | |
151 | addr->unique = string_copy(address); | |
152 | return addr; | |
153 | } | |
154 | ||
155 | ||
156 | ||
157 | ||
158 | /************************************************* | |
159 | * Set expansion values for an address * | |
160 | *************************************************/ | |
161 | ||
162 | /* Certain expansion variables are valid only when handling an address or | |
163 | address list. This function sets them up or clears the values, according to its | |
164 | argument. | |
165 | ||
166 | Arguments: | |
167 | addr the address in question, or NULL to clear values | |
168 | Returns: nothing | |
169 | */ | |
170 | ||
171 | void | |
172 | deliver_set_expansions(address_item *addr) | |
173 | { | |
d6c82d7b | 174 | if (!addr) |
059ec3d9 | 175 | { |
55414b25 | 176 | const uschar ***p = address_expansions; |
d6c82d7b | 177 | while (*p) **p++ = NULL; |
059ec3d9 PH |
178 | return; |
179 | } | |
180 | ||
181 | /* Exactly what gets set depends on whether there is one or more addresses, and | |
182 | what they contain. These first ones are always set, taking their values from | |
183 | the first address. */ | |
184 | ||
d6c82d7b | 185 | if (!addr->host_list) |
059ec3d9 PH |
186 | { |
187 | deliver_host = deliver_host_address = US""; | |
a7538db1 | 188 | deliver_host_port = 0; |
059ec3d9 PH |
189 | } |
190 | else | |
191 | { | |
192 | deliver_host = addr->host_list->name; | |
193 | deliver_host_address = addr->host_list->address; | |
a7538db1 | 194 | deliver_host_port = addr->host_list->port; |
059ec3d9 PH |
195 | } |
196 | ||
197 | deliver_recipients = addr; | |
d43cbe25 JH |
198 | deliver_address_data = addr->prop.address_data; |
199 | deliver_domain_data = addr->prop.domain_data; | |
200 | deliver_localpart_data = addr->prop.localpart_data; | |
b4f579d1 | 201 | router_var = addr->prop.variables; |
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 | { | |
8f84b06a JH |
331 | if (Ustrstr(filename, US"/../")) |
332 | log_write(0, LOG_MAIN|LOG_PANIC, | |
333 | "Attempt to open msglog file path with upward-traversal: '%s'\n", filename); | |
334 | ||
d7978c0f | 335 | for (int i = 2; i > 0; i--) |
059ec3d9 | 336 | { |
d7978c0f | 337 | int fd = Uopen(filename, |
92b0827a JH |
338 | #ifdef O_CLOEXEC |
339 | O_CLOEXEC | | |
340 | #endif | |
341 | #ifdef O_NOFOLLOW | |
342 | O_NOFOLLOW | | |
343 | #endif | |
344 | O_WRONLY|O_APPEND|O_CREAT, mode); | |
345 | if (fd >= 0) | |
346 | { | |
347 | /* Set the close-on-exec flag and change the owner to the exim uid/gid (this | |
348 | function is called as root). Double check the mode, because the group setting | |
349 | doesn't always get set automatically. */ | |
350 | ||
351 | #ifndef O_CLOEXEC | |
352 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); | |
353 | #endif | |
b66fecb4 | 354 | if (exim_fchown(fd, exim_uid, exim_gid, filename) < 0) |
92b0827a JH |
355 | { |
356 | *error = US"chown"; | |
357 | return -1; | |
358 | } | |
359 | if (fchmod(fd, mode) < 0) | |
360 | { | |
361 | *error = US"chmod"; | |
362 | return -1; | |
363 | } | |
364 | return fd; | |
365 | } | |
366 | if (errno != ENOENT) | |
367 | break; | |
368 | ||
41313d92 JH |
369 | (void)directory_make(spool_directory, |
370 | spool_sname(US"msglog", message_subdir), | |
371 | MSGLOG_DIRECTORY_MODE, TRUE); | |
059ec3d9 | 372 | } |
059ec3d9 | 373 | |
b66fecb4 | 374 | *error = US"create or open"; |
92b0827a | 375 | return -1; |
059ec3d9 PH |
376 | } |
377 | ||
378 | ||
379 | ||
380 | ||
381 | /************************************************* | |
382 | * Write to msglog if required * | |
383 | *************************************************/ | |
384 | ||
385 | /* Write to the message log, if configured. This function may also be called | |
386 | from transports. | |
387 | ||
388 | Arguments: | |
389 | format a string format | |
390 | ||
391 | Returns: nothing | |
392 | */ | |
393 | ||
394 | void | |
395 | deliver_msglog(const char *format, ...) | |
396 | { | |
397 | va_list ap; | |
398 | if (!message_logs) return; | |
399 | va_start(ap, format); | |
400 | vfprintf(message_log, format, ap); | |
401 | fflush(message_log); | |
402 | va_end(ap); | |
403 | } | |
404 | ||
405 | ||
406 | ||
407 | ||
408 | /************************************************* | |
409 | * Replicate status for batch * | |
410 | *************************************************/ | |
411 | ||
412 | /* When a transport handles a batch of addresses, it may treat them | |
413 | individually, or it may just put the status in the first one, and return FALSE, | |
414 | requesting that the status be copied to all the others externally. This is the | |
415 | replication function. As well as the status, it copies the transport pointer, | |
416 | which may have changed if appendfile passed the addresses on to a different | |
417 | transport. | |
418 | ||
419 | Argument: pointer to the first address in a chain | |
420 | Returns: nothing | |
421 | */ | |
422 | ||
423 | static void | |
424 | replicate_status(address_item *addr) | |
425 | { | |
d7978c0f | 426 | for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 | 427 | { |
d6c82d7b | 428 | addr2->transport = addr->transport; |
059ec3d9 | 429 | addr2->transport_return = addr->transport_return; |
d6c82d7b JH |
430 | addr2->basic_errno = addr->basic_errno; |
431 | addr2->more_errno = addr->more_errno; | |
a55697ac | 432 | addr2->delivery_time = addr->delivery_time; |
d6c82d7b JH |
433 | addr2->special_action = addr->special_action; |
434 | addr2->message = addr->message; | |
435 | addr2->user_message = addr->user_message; | |
059ec3d9 PH |
436 | } |
437 | } | |
438 | ||
439 | ||
440 | ||
441 | /************************************************* | |
442 | * Compare lists of hosts * | |
443 | *************************************************/ | |
444 | ||
445 | /* This function is given two pointers to chains of host items, and it yields | |
446 | TRUE if the lists refer to the same hosts in the same order, except that | |
447 | ||
448 | (1) Multiple hosts with the same non-negative MX values are permitted to appear | |
449 | in different orders. Round-robinning nameservers can cause this to happen. | |
450 | ||
451 | (2) Multiple hosts with the same negative MX values less than MX_NONE are also | |
452 | permitted to appear in different orders. This is caused by randomizing | |
453 | hosts lists. | |
454 | ||
455 | This enables Exim to use a single SMTP transaction for sending to two entirely | |
456 | different domains that happen to end up pointing at the same hosts. | |
457 | ||
458 | Arguments: | |
459 | one points to the first host list | |
460 | two points to the second host list | |
461 | ||
462 | Returns: TRUE if the lists refer to the same host set | |
463 | */ | |
464 | ||
465 | static BOOL | |
466 | same_hosts(host_item *one, host_item *two) | |
467 | { | |
d6c82d7b | 468 | while (one && two) |
059ec3d9 PH |
469 | { |
470 | if (Ustrcmp(one->name, two->name) != 0) | |
471 | { | |
472 | int mx = one->mx; | |
473 | host_item *end_one = one; | |
474 | host_item *end_two = two; | |
475 | ||
476 | /* Batch up only if there was no MX and the list was not randomized */ | |
477 | ||
478 | if (mx == MX_NONE) return FALSE; | |
479 | ||
480 | /* Find the ends of the shortest sequence of identical MX values */ | |
481 | ||
d6c82d7b JH |
482 | while ( end_one->next && end_one->next->mx == mx |
483 | && end_two->next && end_two->next->mx == mx) | |
059ec3d9 PH |
484 | { |
485 | end_one = end_one->next; | |
486 | end_two = end_two->next; | |
487 | } | |
488 | ||
489 | /* If there aren't any duplicates, there's no match. */ | |
490 | ||
491 | if (end_one == one) return FALSE; | |
492 | ||
493 | /* For each host in the 'one' sequence, check that it appears in the 'two' | |
494 | sequence, returning FALSE if not. */ | |
495 | ||
496 | for (;;) | |
497 | { | |
498 | host_item *hi; | |
499 | for (hi = two; hi != end_two->next; hi = hi->next) | |
500 | if (Ustrcmp(one->name, hi->name) == 0) break; | |
501 | if (hi == end_two->next) return FALSE; | |
502 | if (one == end_one) break; | |
503 | one = one->next; | |
504 | } | |
505 | ||
506 | /* All the hosts in the 'one' sequence were found in the 'two' sequence. | |
507 | Ensure both are pointing at the last host, and carry on as for equality. */ | |
508 | ||
509 | two = end_two; | |
510 | } | |
511 | ||
1c788856 JH |
512 | /* if the names matched but ports do not, mismatch */ |
513 | else if (one->port != two->port) | |
514 | return FALSE; | |
515 | ||
059ec3d9 PH |
516 | /* Hosts matched */ |
517 | ||
518 | one = one->next; | |
519 | two = two->next; | |
520 | } | |
521 | ||
522 | /* True if both are NULL */ | |
523 | ||
524 | return (one == two); | |
525 | } | |
526 | ||
527 | ||
528 | ||
529 | /************************************************* | |
530 | * Compare header lines * | |
531 | *************************************************/ | |
532 | ||
533 | /* This function is given two pointers to chains of header items, and it yields | |
534 | TRUE if they are the same header texts in the same order. | |
535 | ||
536 | Arguments: | |
537 | one points to the first header list | |
538 | two points to the second header list | |
539 | ||
540 | Returns: TRUE if the lists refer to the same header set | |
541 | */ | |
542 | ||
543 | static BOOL | |
544 | same_headers(header_line *one, header_line *two) | |
545 | { | |
d6c82d7b | 546 | for (;; one = one->next, two = two->next) |
059ec3d9 PH |
547 | { |
548 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 549 | if (!one || !two) return FALSE; |
059ec3d9 | 550 | if (Ustrcmp(one->text, two->text) != 0) return FALSE; |
059ec3d9 PH |
551 | } |
552 | } | |
553 | ||
554 | ||
555 | ||
556 | /************************************************* | |
557 | * Compare string settings * | |
558 | *************************************************/ | |
559 | ||
560 | /* This function is given two pointers to strings, and it returns | |
561 | TRUE if they are the same pointer, or if the two strings are the same. | |
562 | ||
563 | Arguments: | |
564 | one points to the first string | |
565 | two points to the second string | |
566 | ||
567 | Returns: TRUE or FALSE | |
568 | */ | |
569 | ||
570 | static BOOL | |
571 | same_strings(uschar *one, uschar *two) | |
572 | { | |
573 | if (one == two) return TRUE; /* Includes the case where both NULL */ | |
d6c82d7b | 574 | if (!one || !two) return FALSE; |
059ec3d9 PH |
575 | return (Ustrcmp(one, two) == 0); |
576 | } | |
577 | ||
578 | ||
579 | ||
580 | /************************************************* | |
581 | * Compare uid/gid for addresses * | |
582 | *************************************************/ | |
583 | ||
584 | /* This function is given a transport and two addresses. It yields TRUE if the | |
585 | uid/gid/initgroups settings for the two addresses are going to be the same when | |
586 | they are delivered. | |
587 | ||
588 | Arguments: | |
589 | tp the transort | |
590 | addr1 the first address | |
591 | addr2 the second address | |
592 | ||
593 | Returns: TRUE or FALSE | |
594 | */ | |
595 | ||
596 | static BOOL | |
597 | same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2) | |
598 | { | |
d6c82d7b JH |
599 | if ( !tp->uid_set && !tp->expand_uid |
600 | && !tp->deliver_as_creator | |
601 | && ( testflag(addr1, af_uid_set) != testflag(addr2, af_gid_set) | |
602 | || ( testflag(addr1, af_uid_set) | |
603 | && ( addr1->uid != addr2->uid | |
604 | || testflag(addr1, af_initgroups) != testflag(addr2, af_initgroups) | |
605 | ) ) ) ) | |
606 | return FALSE; | |
059ec3d9 | 607 | |
d6c82d7b JH |
608 | if ( !tp->gid_set && !tp->expand_gid |
609 | && ( testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set) | |
610 | || ( testflag(addr1, af_gid_set) | |
611 | && addr1->gid != addr2->gid | |
612 | ) ) ) | |
613 | return FALSE; | |
059ec3d9 PH |
614 | |
615 | return TRUE; | |
616 | } | |
617 | ||
618 | ||
619 | ||
620 | ||
621 | /************************************************* | |
622 | * Record that an address is complete * | |
623 | *************************************************/ | |
624 | ||
625 | /* This function records that an address is complete. This is straightforward | |
626 | for most addresses, where the unique address is just the full address with the | |
627 | domain lower cased. For homonyms (addresses that are the same as one of their | |
628 | ancestors) their are complications. Their unique addresses have \x\ prepended | |
629 | (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and | |
630 | cousins. | |
631 | ||
632 | Exim used to record the unique addresses of homonyms as "complete". This, | |
633 | however, fails when the pattern of redirection varies over time (e.g. if taking | |
634 | unseen copies at only some times of day) because the prepended numbers may vary | |
635 | from one delivery run to the next. This problem is solved by never recording | |
636 | prepended unique addresses as complete. Instead, when a homonymic address has | |
637 | actually been delivered via a transport, we record its basic unique address | |
638 | followed by the name of the transport. This is checked in subsequent delivery | |
639 | runs whenever an address is routed to a transport. | |
640 | ||
641 | If the completed address is a top-level one (has no parent, which means it | |
642 | cannot be homonymic) we also add the original address to the non-recipients | |
643 | tree, so that it gets recorded in the spool file and therefore appears as | |
644 | "done" in any spool listings. The original address may differ from the unique | |
645 | address in the case of the domain. | |
646 | ||
647 | Finally, this function scans the list of duplicates, marks as done any that | |
648 | match this address, and calls child_done() for their ancestors. | |
649 | ||
650 | Arguments: | |
651 | addr address item that has been completed | |
652 | now current time as a string | |
653 | ||
654 | Returns: nothing | |
655 | */ | |
656 | ||
657 | static void | |
658 | address_done(address_item *addr, uschar *now) | |
659 | { | |
059ec3d9 PH |
660 | update_spool = TRUE; /* Ensure spool gets updated */ |
661 | ||
662 | /* Top-level address */ | |
663 | ||
d6c82d7b | 664 | if (!addr->parent) |
059ec3d9 PH |
665 | { |
666 | tree_add_nonrecipient(addr->unique); | |
667 | tree_add_nonrecipient(addr->address); | |
668 | } | |
669 | ||
670 | /* Homonymous child address */ | |
671 | ||
672 | else if (testflag(addr, af_homonym)) | |
673 | { | |
d6c82d7b | 674 | if (addr->transport) |
059ec3d9 PH |
675 | tree_add_nonrecipient( |
676 | string_sprintf("%s/%s", addr->unique + 3, addr->transport->name)); | |
059ec3d9 PH |
677 | } |
678 | ||
679 | /* Non-homonymous child address */ | |
680 | ||
681 | else tree_add_nonrecipient(addr->unique); | |
682 | ||
683 | /* Check the list of duplicate addresses and ensure they are now marked | |
684 | done as well. */ | |
685 | ||
d7978c0f | 686 | for (address_item * dup = addr_duplicate; dup; dup = dup->next) |
059ec3d9 PH |
687 | if (Ustrcmp(addr->unique, dup->unique) == 0) |
688 | { | |
57730b52 | 689 | tree_add_nonrecipient(dup->unique); |
059ec3d9 PH |
690 | child_done(dup, now); |
691 | } | |
059ec3d9 PH |
692 | } |
693 | ||
694 | ||
695 | ||
696 | ||
697 | /************************************************* | |
698 | * Decrease counts in parents and mark done * | |
699 | *************************************************/ | |
700 | ||
701 | /* This function is called when an address is complete. If there is a parent | |
702 | address, its count of children is decremented. If there are still other | |
703 | children outstanding, the function exits. Otherwise, if the count has become | |
704 | zero, address_done() is called to mark the parent and its duplicates complete. | |
705 | Then loop for any earlier ancestors. | |
706 | ||
707 | Arguments: | |
708 | addr points to the completed address item | |
709 | now the current time as a string, for writing to the message log | |
710 | ||
711 | Returns: nothing | |
712 | */ | |
713 | ||
714 | static void | |
715 | child_done(address_item *addr, uschar *now) | |
716 | { | |
d6c82d7b | 717 | while (addr->parent) |
059ec3d9 | 718 | { |
d7978c0f JH |
719 | address_item *aa; |
720 | ||
059ec3d9 | 721 | addr = addr->parent; |
82f90600 | 722 | if (--addr->child_count > 0) return; /* Incomplete parent */ |
059ec3d9 PH |
723 | address_done(addr, now); |
724 | ||
725 | /* Log the completion of all descendents only when there is no ancestor with | |
726 | the same original address. */ | |
727 | ||
d6c82d7b | 728 | for (aa = addr->parent; aa; aa = aa->parent) |
059ec3d9 | 729 | if (Ustrcmp(aa->address, addr->address) == 0) break; |
d6c82d7b | 730 | if (aa) continue; |
059ec3d9 PH |
731 | |
732 | deliver_msglog("%s %s: children all complete\n", now, addr->address); | |
733 | DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address); | |
734 | } | |
735 | } | |
736 | ||
737 | ||
738 | ||
ac881e27 TF |
739 | /************************************************* |
740 | * Delivery logging support functions * | |
741 | *************************************************/ | |
742 | ||
743 | /* The LOGGING() checks in d_log_interface() are complicated for backwards | |
744 | compatibility. When outgoing interface logging was originally added, it was | |
745 | conditional on just incoming_interface (which is off by default). The | |
746 | outgoing_interface option is on by default to preserve this behaviour, but | |
747 | you can enable incoming_interface and disable outgoing_interface to get I= | |
748 | fields on incoming lines only. | |
749 | ||
750 | Arguments: | |
acec9514 | 751 | g The log line |
ac881e27 TF |
752 | addr The address to be logged |
753 | ||
754 | Returns: New value for s | |
755 | */ | |
059ec3d9 | 756 | |
acec9514 JH |
757 | static gstring * |
758 | d_log_interface(gstring * g) | |
67d81c10 | 759 | { |
ac881e27 | 760 | if (LOGGING(incoming_interface) && LOGGING(outgoing_interface) |
d6c82d7b | 761 | && sending_ip_address) |
ac881e27 | 762 | { |
d12746bc JH |
763 | g = string_fmt_append(g, " I=[%s]", sending_ip_address); |
764 | if (LOGGING(outgoing_port)) | |
2d5bf097 | 765 | g = string_fmt_append(g, ":%d", sending_port); |
ac881e27 | 766 | } |
acec9514 | 767 | return g; |
67d81c10 JH |
768 | } |
769 | ||
ac881e27 TF |
770 | |
771 | ||
acec9514 JH |
772 | static gstring * |
773 | d_hostlog(gstring * g, address_item * addr) | |
ac881e27 | 774 | { |
fc16abb4 JH |
775 | host_item * h = addr->host_used; |
776 | ||
acec9514 | 777 | g = string_append(g, 2, US" H=", h->name); |
fc16abb4 JH |
778 | |
779 | if (LOGGING(dnssec) && h->dnssec == DS_YES) | |
acec9514 | 780 | g = string_catn(g, US" DS", 3); |
fc16abb4 | 781 | |
acec9514 | 782 | g = string_append(g, 3, US" [", h->address, US"]"); |
fc16abb4 | 783 | |
ac881e27 | 784 | if (LOGGING(outgoing_port)) |
d12746bc | 785 | g = string_fmt_append(g, ":%d", h->port); |
e6d2a989 JH |
786 | |
787 | #ifdef SUPPORT_SOCKS | |
788 | if (LOGGING(proxy) && proxy_local_address) | |
789 | { | |
acec9514 | 790 | g = string_append(g, 3, US" PRX=[", proxy_local_address, US"]"); |
e6d2a989 | 791 | if (LOGGING(outgoing_port)) |
d12746bc | 792 | g = string_fmt_append(g, ":%d", proxy_local_port); |
e6d2a989 JH |
793 | } |
794 | #endif | |
795 | ||
acec9514 | 796 | g = d_log_interface(g); |
a2673768 JH |
797 | |
798 | if (testflag(addr, af_tcp_fastopen)) | |
ee8b8090 | 799 | g = string_catn(g, US" TFO*", testflag(addr, af_tcp_fastopen_data) ? 5 : 4); |
a2673768 | 800 | |
acec9514 | 801 | return g; |
ac881e27 TF |
802 | } |
803 | ||
804 | ||
805 | ||
e6d2a989 JH |
806 | |
807 | ||
01603eec | 808 | #ifndef DISABLE_TLS |
acec9514 | 809 | static gstring * |
b10c87b3 | 810 | d_tlslog(gstring * g, address_item * addr) |
67d81c10 | 811 | { |
d6c82d7b | 812 | if (LOGGING(tls_cipher) && addr->cipher) |
b10c87b3 JH |
813 | { |
814 | g = string_append(g, 2, US" X=", addr->cipher); | |
815 | #ifdef EXPERIMENTAL_TLS_RESUME | |
816 | if (LOGGING(tls_resumption) && testflag(addr, af_tls_resume)) | |
817 | g = string_catn(g, US"*", 1); | |
818 | #endif | |
819 | } | |
d6c82d7b | 820 | if (LOGGING(tls_certificate_verified) && addr->cipher) |
b10c87b3 | 821 | g = string_append(g, 2, US" CV=", |
ac881e27 TF |
822 | testflag(addr, af_cert_verified) |
823 | ? | |
c0635b6d | 824 | #ifdef SUPPORT_DANE |
ac881e27 TF |
825 | testflag(addr, af_dane_verified) |
826 | ? "dane" | |
827 | : | |
53a7196b | 828 | #endif |
ac881e27 TF |
829 | "yes" |
830 | : "no"); | |
d6c82d7b | 831 | if (LOGGING(tls_peerdn) && addr->peerdn) |
b10c87b3 JH |
832 | g = string_append(g, 3, US" DN=\"", string_printing(addr->peerdn), US"\""); |
833 | return g; | |
67d81c10 JH |
834 | } |
835 | #endif | |
836 | ||
a7538db1 | 837 | |
14a465c3 JH |
838 | |
839 | ||
0cbf2b82 | 840 | #ifndef DISABLE_EVENT |
b30275b8 | 841 | uschar * |
55414b25 | 842 | event_raise(uschar * action, const uschar * event, uschar * ev_data) |
a7538db1 JH |
843 | { |
844 | uschar * s; | |
845 | if (action) | |
846 | { | |
847 | DEBUG(D_deliver) | |
774ef2d7 | 848 | debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n", |
a7538db1 JH |
849 | event, |
850 | action, deliver_host_address); | |
851 | ||
774ef2d7 JH |
852 | event_name = event; |
853 | event_data = ev_data; | |
a7538db1 JH |
854 | |
855 | if (!(s = expand_string(action)) && *expand_string_message) | |
856 | log_write(0, LOG_MAIN|LOG_PANIC, | |
774ef2d7 | 857 | "failed to expand event_action %s in %s: %s\n", |
7ea1237c | 858 | event, transport_name ? transport_name : US"main", expand_string_message); |
a7538db1 | 859 | |
774ef2d7 | 860 | event_name = event_data = NULL; |
a7538db1 JH |
861 | |
862 | /* If the expansion returns anything but an empty string, flag for | |
863 | the caller to modify his normal processing | |
864 | */ | |
865 | if (s && *s) | |
866 | { | |
867 | DEBUG(D_deliver) | |
774ef2d7 | 868 | debug_printf("Event(%s): event_action returned \"%s\"\n", event, s); |
95938464 | 869 | errno = ERRNO_EVENT; |
b30275b8 | 870 | return s; |
a7538db1 JH |
871 | } |
872 | } | |
b30275b8 | 873 | return NULL; |
a7538db1 | 874 | } |
14a465c3 | 875 | |
5ef5dd52 | 876 | void |
55414b25 | 877 | msg_event_raise(const uschar * event, const address_item * addr) |
14a465c3 | 878 | { |
55414b25 | 879 | const uschar * save_domain = deliver_domain; |
14a465c3 | 880 | uschar * save_local = deliver_localpart; |
55414b25 | 881 | const uschar * save_host = deliver_host; |
5ef5dd52 JB |
882 | const uschar * save_address = deliver_host_address; |
883 | const int save_port = deliver_host_port; | |
14a465c3 | 884 | |
14a465c3 | 885 | router_name = addr->router ? addr->router->name : NULL; |
14a465c3 JH |
886 | deliver_domain = addr->domain; |
887 | deliver_localpart = addr->local_part; | |
c562fd30 | 888 | deliver_host = addr->host_used ? addr->host_used->name : NULL; |
14a465c3 | 889 | |
4e928780 MK |
890 | if (!addr->transport) |
891 | { | |
892 | if (Ustrcmp(event, "msg:fail:delivery") == 0) | |
893 | { | |
894 | /* An address failed with no transport involved. This happens when | |
895 | a filter was used which triggered a fail command (in such a case | |
896 | a transport isn't needed). Convert it to an internal fail event. */ | |
897 | ||
898 | (void) event_raise(event_action, US"msg:fail:internal", addr->message); | |
899 | } | |
900 | } | |
901 | else | |
902 | { | |
903 | transport_name = addr->transport->name; | |
904 | ||
905 | (void) event_raise(addr->transport->event_action, event, | |
906 | addr->host_used | |
907 | || Ustrcmp(addr->transport->driver_name, "smtp") == 0 | |
908 | || Ustrcmp(addr->transport->driver_name, "lmtp") == 0 | |
909 | || Ustrcmp(addr->transport->driver_name, "autoreply") == 0 | |
910 | ? addr->message : NULL); | |
911 | } | |
14a465c3 | 912 | |
5ef5dd52 JB |
913 | deliver_host_port = save_port; |
914 | deliver_host_address = save_address; | |
c562fd30 | 915 | deliver_host = save_host; |
14a465c3 JH |
916 | deliver_localpart = save_local; |
917 | deliver_domain = save_domain; | |
918 | router_name = transport_name = NULL; | |
919 | } | |
0cbf2b82 | 920 | #endif /*DISABLE_EVENT*/ |
14a465c3 JH |
921 | |
922 | ||
a7538db1 | 923 | |
5dac72a7 JH |
924 | /******************************************************************************/ |
925 | ||
926 | ||
927 | /************************************************* | |
928 | * Generate local prt for logging * | |
929 | *************************************************/ | |
930 | ||
931 | /* This function is a subroutine for use in string_log_address() below. | |
932 | ||
933 | Arguments: | |
934 | addr the address being logged | |
935 | yield the current dynamic buffer pointer | |
5dac72a7 JH |
936 | |
937 | Returns: the new value of the buffer pointer | |
938 | */ | |
939 | ||
acec9514 JH |
940 | static gstring * |
941 | string_get_localpart(address_item * addr, gstring * yield) | |
5dac72a7 JH |
942 | { |
943 | uschar * s; | |
944 | ||
945 | s = addr->prefix; | |
946 | if (testflag(addr, af_include_affixes) && s) | |
947 | { | |
948 | #ifdef SUPPORT_I18N | |
949 | if (testflag(addr, af_utf8_downcvt)) | |
950 | s = string_localpart_utf8_to_alabel(s, NULL); | |
951 | #endif | |
acec9514 | 952 | yield = string_cat(yield, s); |
5dac72a7 JH |
953 | } |
954 | ||
955 | s = addr->local_part; | |
956 | #ifdef SUPPORT_I18N | |
957 | if (testflag(addr, af_utf8_downcvt)) | |
958 | s = string_localpart_utf8_to_alabel(s, NULL); | |
959 | #endif | |
acec9514 | 960 | yield = string_cat(yield, s); |
5dac72a7 JH |
961 | |
962 | s = addr->suffix; | |
963 | if (testflag(addr, af_include_affixes) && s) | |
964 | { | |
965 | #ifdef SUPPORT_I18N | |
966 | if (testflag(addr, af_utf8_downcvt)) | |
967 | s = string_localpart_utf8_to_alabel(s, NULL); | |
968 | #endif | |
acec9514 | 969 | yield = string_cat(yield, s); |
5dac72a7 JH |
970 | } |
971 | ||
972 | return yield; | |
973 | } | |
974 | ||
975 | ||
976 | /************************************************* | |
977 | * Generate log address list * | |
978 | *************************************************/ | |
979 | ||
980 | /* This function generates a list consisting of an address and its parents, for | |
981 | use in logging lines. For saved onetime aliased addresses, the onetime parent | |
982 | field is used. If the address was delivered by a transport with rcpt_include_ | |
983 | affixes set, the af_include_affixes bit will be set in the address. In that | |
984 | case, we include the affixes here too. | |
985 | ||
986 | Arguments: | |
acec9514 | 987 | g points to growing-string struct |
5dac72a7 JH |
988 | addr bottom (ultimate) address |
989 | all_parents if TRUE, include all parents | |
990 | success TRUE for successful delivery | |
991 | ||
992 | Returns: a growable string in dynamic store | |
993 | */ | |
994 | ||
acec9514 JH |
995 | static gstring * |
996 | string_log_address(gstring * g, | |
5dac72a7 JH |
997 | address_item *addr, BOOL all_parents, BOOL success) |
998 | { | |
999 | BOOL add_topaddr = TRUE; | |
1000 | address_item *topaddr; | |
1001 | ||
1002 | /* Find the ultimate parent */ | |
1003 | ||
1004 | for (topaddr = addr; topaddr->parent; topaddr = topaddr->parent) ; | |
1005 | ||
1006 | /* We start with just the local part for pipe, file, and reply deliveries, and | |
1007 | for successful local deliveries from routers that have the log_as_local flag | |
1008 | set. File deliveries from filters can be specified as non-absolute paths in | |
4c04137d | 1009 | cases where the transport is going to complete the path. If there is an error |
5dac72a7 JH |
1010 | before this happens (expansion failure) the local part will not be updated, and |
1011 | so won't necessarily look like a path. Add extra text for this case. */ | |
1012 | ||
1013 | if ( testflag(addr, af_pfr) | |
1014 | || ( success | |
1015 | && addr->router && addr->router->log_as_local | |
1016 | && addr->transport && addr->transport->info->local | |
1017 | ) ) | |
1018 | { | |
1019 | if (testflag(addr, af_file) && addr->local_part[0] != '/') | |
acec9514 JH |
1020 | g = string_catn(g, CUS"save ", 5); |
1021 | g = string_get_localpart(addr, g); | |
5dac72a7 JH |
1022 | } |
1023 | ||
1024 | /* Other deliveries start with the full address. It we have split it into local | |
1025 | part and domain, use those fields. Some early failures can happen before the | |
1026 | splitting is done; in those cases use the original field. */ | |
1027 | ||
1028 | else | |
1029 | { | |
f3ebb786 JH |
1030 | uschar * cmp; |
1031 | int off = g->ptr; /* start of the "full address" */ | |
5dac72a7 JH |
1032 | |
1033 | if (addr->local_part) | |
1034 | { | |
1035 | const uschar * s; | |
acec9514 JH |
1036 | g = string_get_localpart(addr, g); |
1037 | g = string_catn(g, US"@", 1); | |
5dac72a7 JH |
1038 | s = addr->domain; |
1039 | #ifdef SUPPORT_I18N | |
1040 | if (testflag(addr, af_utf8_downcvt)) | |
1041 | s = string_localpart_utf8_to_alabel(s, NULL); | |
1042 | #endif | |
acec9514 | 1043 | g = string_cat(g, s); |
5dac72a7 JH |
1044 | } |
1045 | else | |
acec9514 | 1046 | g = string_cat(g, addr->address); |
5dac72a7 JH |
1047 | |
1048 | /* If the address we are going to print is the same as the top address, | |
1049 | and all parents are not being included, don't add on the top address. First | |
1050 | of all, do a caseless comparison; if this succeeds, do a caseful comparison | |
1051 | on the local parts. */ | |
1052 | ||
f3ebb786 | 1053 | cmp = g->s + off; /* only now, as rebuffer likely done */ |
306c6c77 | 1054 | string_from_gstring(g); /* ensure nul-terminated */ |
5dac72a7 JH |
1055 | if ( strcmpic(cmp, topaddr->address) == 0 |
1056 | && Ustrncmp(cmp, topaddr->address, Ustrchr(cmp, '@') - cmp) == 0 | |
1057 | && !addr->onetime_parent | |
1058 | && (!all_parents || !addr->parent || addr->parent == topaddr) | |
1059 | ) | |
1060 | add_topaddr = FALSE; | |
1061 | } | |
1062 | ||
1063 | /* If all parents are requested, or this is a local pipe/file/reply, and | |
1064 | there is at least one intermediate parent, show it in brackets, and continue | |
1065 | with all of them if all are wanted. */ | |
1066 | ||
1067 | if ( (all_parents || testflag(addr, af_pfr)) | |
1068 | && addr->parent | |
1069 | && addr->parent != topaddr) | |
1070 | { | |
1071 | uschar *s = US" ("; | |
d7978c0f | 1072 | for (address_item * addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent) |
5dac72a7 | 1073 | { |
acec9514 JH |
1074 | g = string_catn(g, s, 2); |
1075 | g = string_cat (g, addr2->address); | |
5dac72a7 JH |
1076 | if (!all_parents) break; |
1077 | s = US", "; | |
1078 | } | |
acec9514 | 1079 | g = string_catn(g, US")", 1); |
5dac72a7 JH |
1080 | } |
1081 | ||
1082 | /* Add the top address if it is required */ | |
1083 | ||
1084 | if (add_topaddr) | |
acec9514 | 1085 | g = string_append(g, 3, |
5dac72a7 JH |
1086 | US" <", |
1087 | addr->onetime_parent ? addr->onetime_parent : topaddr->address, | |
1088 | US">"); | |
1089 | ||
acec9514 | 1090 | return g; |
5dac72a7 JH |
1091 | } |
1092 | ||
1093 | ||
32dfdf8b | 1094 | |
5dac72a7 JH |
1095 | /******************************************************************************/ |
1096 | ||
1097 | ||
1098 | ||
817d9f57 | 1099 | /* If msg is NULL this is a delivery log and logchar is used. Otherwise |
67d81c10 | 1100 | this is a nonstandard call; no two-character delivery flag is written |
817d9f57 JH |
1101 | but sender-host and sender are prefixed and "msg" is inserted in the log line. |
1102 | ||
1103 | Arguments: | |
1104 | flags passed to log_write() | |
1105 | */ | |
e4bdf652 | 1106 | void |
817d9f57 | 1107 | delivery_log(int flags, address_item * addr, int logchar, uschar * msg) |
e4bdf652 | 1108 | { |
acec9514 | 1109 | gstring * g; /* Used for a temporary, expanding buffer, for building log lines */ |
f3ebb786 | 1110 | rmark reset_point; |
e4bdf652 | 1111 | |
e4bdf652 JH |
1112 | /* Log the delivery on the main log. We use an extensible string to build up |
1113 | the log line, and reset the store afterwards. Remote deliveries should always | |
1114 | have a pointer to the host item that succeeded; local deliveries can have a | |
1115 | pointer to a single host item in their host list, for use by the transport. */ | |
1116 | ||
0cbf2b82 | 1117 | #ifndef DISABLE_EVENT |
a7538db1 | 1118 | /* presume no successful remote delivery */ |
783b385f | 1119 | lookup_dnssec_authenticated = NULL; |
d68218c7 JH |
1120 | #endif |
1121 | ||
f3ebb786 JH |
1122 | reset_point = store_mark(); |
1123 | g = string_get_tainted(256, TRUE); /* addrs will be tainted, so avoid copy */ | |
e4bdf652 | 1124 | |
817d9f57 | 1125 | if (msg) |
acec9514 | 1126 | g = string_append(g, 2, host_and_ident(TRUE), US" "); |
817d9f57 JH |
1127 | else |
1128 | { | |
acec9514 JH |
1129 | g->s[0] = logchar; g->ptr = 1; |
1130 | g = string_catn(g, US"> ", 2); | |
817d9f57 | 1131 | } |
acec9514 | 1132 | g = string_log_address(g, addr, LOGGING(all_parents), TRUE); |
e4bdf652 | 1133 | |
6c6d6e48 | 1134 | if (LOGGING(sender_on_delivery) || msg) |
acec9514 | 1135 | g = string_append(g, 3, US" F=<", |
8c5d388a | 1136 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
1137 | testflag(addr, af_utf8_downcvt) |
1138 | ? string_address_utf8_to_alabel(sender_address, NULL) | |
1139 | : | |
1140 | #endif | |
1141 | sender_address, | |
1142 | US">"); | |
e4bdf652 | 1143 | |
afa6d3ad | 1144 | if (*queue_name) |
acec9514 | 1145 | g = string_append(g, 2, US" Q=", queue_name); |
afa6d3ad | 1146 | |
e4bdf652 | 1147 | #ifdef EXPERIMENTAL_SRS |
d43cbe25 | 1148 | if(addr->prop.srs_sender) |
acec9514 | 1149 | g = string_append(g, 3, US" SRS=<", addr->prop.srs_sender, US">"); |
e4bdf652 JH |
1150 | #endif |
1151 | ||
1152 | /* You might think that the return path must always be set for a successful | |
1153 | delivery; indeed, I did for some time, until this statement crashed. The case | |
1154 | when it is not set is for a delivery to /dev/null which is optimised by not | |
1155 | being run at all. */ | |
1156 | ||
d6c82d7b | 1157 | if (used_return_path && LOGGING(return_path_on_delivery)) |
acec9514 | 1158 | g = string_append(g, 3, US" P=<", used_return_path, US">"); |
e4bdf652 | 1159 | |
817d9f57 | 1160 | if (msg) |
acec9514 | 1161 | g = string_append(g, 2, US" ", msg); |
e4bdf652 | 1162 | |
817d9f57 | 1163 | /* For a delivery from a system filter, there may not be a router */ |
d6c82d7b | 1164 | if (addr->router) |
acec9514 | 1165 | g = string_append(g, 2, US" R=", addr->router->name); |
e4bdf652 | 1166 | |
acec9514 | 1167 | g = string_append(g, 2, US" T=", addr->transport->name); |
e4bdf652 | 1168 | |
6c6d6e48 | 1169 | if (LOGGING(delivery_size)) |
d12746bc | 1170 | g = string_fmt_append(g, " S=%d", transport_count); |
e4bdf652 JH |
1171 | |
1172 | /* Local delivery */ | |
1173 | ||
1174 | if (addr->transport->info->local) | |
1175 | { | |
a7538db1 | 1176 | if (addr->host_list) |
acec9514 JH |
1177 | g = string_append(g, 2, US" H=", addr->host_list->name); |
1178 | g = d_log_interface(g); | |
d6c82d7b | 1179 | if (addr->shadow_message) |
acec9514 | 1180 | g = string_cat(g, addr->shadow_message); |
e4bdf652 JH |
1181 | } |
1182 | ||
1183 | /* Remote delivery */ | |
1184 | ||
1185 | else | |
1186 | { | |
783b385f | 1187 | if (addr->host_used) |
e4bdf652 | 1188 | { |
acec9514 | 1189 | g = d_hostlog(g, addr); |
e4bdf652 | 1190 | if (continue_sequence > 1) |
acec9514 | 1191 | g = string_catn(g, US"*", 1); |
d68218c7 | 1192 | |
0cbf2b82 | 1193 | #ifndef DISABLE_EVENT |
a7538db1 JH |
1194 | deliver_host_address = addr->host_used->address; |
1195 | deliver_host_port = addr->host_used->port; | |
029f4192 | 1196 | deliver_host = addr->host_used->name; |
783b385f JH |
1197 | |
1198 | /* DNS lookup status */ | |
1199 | lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes" | |
1200 | : addr->host_used->dnssec==DS_NO ? US"no" | |
1201 | : NULL; | |
a7538db1 | 1202 | #endif |
e4bdf652 JH |
1203 | } |
1204 | ||
01603eec | 1205 | #ifndef DISABLE_TLS |
acec9514 | 1206 | g = d_tlslog(g, addr); |
a7538db1 | 1207 | #endif |
e4bdf652 | 1208 | |
018c60d7 | 1209 | if (addr->authenticator) |
6f123593 | 1210 | { |
acec9514 | 1211 | g = string_append(g, 2, US" A=", addr->authenticator); |
018c60d7 | 1212 | if (addr->auth_id) |
c8e2fc1e | 1213 | { |
acec9514 | 1214 | g = string_append(g, 2, US":", addr->auth_id); |
6c6d6e48 | 1215 | if (LOGGING(smtp_mailauth) && addr->auth_sndr) |
acec9514 | 1216 | g = string_append(g, 2, US":", addr->auth_sndr); |
c8e2fc1e | 1217 | } |
6f123593 JH |
1218 | } |
1219 | ||
ee8b8090 JH |
1220 | if (LOGGING(pipelining)) |
1221 | { | |
1222 | if (testflag(addr, af_pipelining)) | |
1223 | g = string_catn(g, US" L", 2); | |
81344b40 | 1224 | #ifndef DISABLE_PIPE_CONNECT |
ee8b8090 JH |
1225 | if (testflag(addr, af_early_pipe)) |
1226 | g = string_catn(g, US"*", 1); | |
1227 | #endif | |
1228 | } | |
7c576fca | 1229 | |
a7538db1 | 1230 | #ifndef DISABLE_PRDR |
7eb0e5d2 | 1231 | if (testflag(addr, af_prdr_used)) |
acec9514 | 1232 | g = string_catn(g, US" PRDR", 5); |
a7538db1 | 1233 | #endif |
e0cc6cda | 1234 | |
7eb0e5d2 | 1235 | if (testflag(addr, af_chunking_used)) |
acec9514 | 1236 | g = string_catn(g, US" K", 2); |
76f44207 WB |
1237 | } |
1238 | ||
1239 | /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */ | |
fd98a5c6 | 1240 | |
d6c82d7b JH |
1241 | if ( LOGGING(smtp_confirmation) |
1242 | && addr->message | |
1243 | && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0) | |
1244 | ) | |
76f44207 | 1245 | { |
1c5b1499 | 1246 | unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024; |
76f44207 WB |
1247 | uschar *p = big_buffer; |
1248 | uschar *ss = addr->message; | |
1249 | *p++ = '\"'; | |
d7978c0f | 1250 | for (int i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */ |
e4bdf652 | 1251 | { |
27520a68 | 1252 | if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */ |
76f44207 | 1253 | *p++ = ss[i]; |
e4bdf652 | 1254 | } |
76f44207 WB |
1255 | *p++ = '\"'; |
1256 | *p = 0; | |
acec9514 | 1257 | g = string_append(g, 2, US" C=", big_buffer); |
e4bdf652 JH |
1258 | } |
1259 | ||
1260 | /* Time on queue and actual time taken to deliver */ | |
1261 | ||
6c6d6e48 | 1262 | if (LOGGING(queue_time)) |
acec9514 | 1263 | g = string_append(g, 2, US" QT=", |
32dfdf8b | 1264 | string_timesince(&received_time)); |
e4bdf652 | 1265 | |
6c6d6e48 | 1266 | if (LOGGING(deliver_time)) |
a55697ac | 1267 | g = string_append(g, 2, US" DT=", string_timediff(&addr->delivery_time)); |
e4bdf652 JH |
1268 | |
1269 | /* string_cat() always leaves room for the terminator. Release the | |
1270 | store we used to build the line after writing it. */ | |
1271 | ||
acec9514 | 1272 | log_write(0, flags, "%s", string_from_gstring(g)); |
d68218c7 | 1273 | |
0cbf2b82 | 1274 | #ifndef DISABLE_EVENT |
774ef2d7 | 1275 | if (!msg) msg_event_raise(US"msg:delivery", addr); |
d68218c7 | 1276 | #endif |
14a465c3 | 1277 | |
e4bdf652 JH |
1278 | store_reset(reset_point); |
1279 | return; | |
1280 | } | |
1281 | ||
1282 | ||
1283 | ||
5dac72a7 JH |
1284 | static void |
1285 | deferral_log(address_item * addr, uschar * now, | |
1286 | int logflags, uschar * driver_name, uschar * driver_kind) | |
1287 | { | |
f3ebb786 JH |
1288 | rmark reset_point = store_mark(); |
1289 | gstring * g = string_get(256); | |
5dac72a7 JH |
1290 | |
1291 | /* Build up the line that is used for both the message log and the main | |
1292 | log. */ | |
1293 | ||
5dac72a7 JH |
1294 | /* Create the address string for logging. Must not do this earlier, because |
1295 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1296 | ||
acec9514 | 1297 | g = string_log_address(g, addr, LOGGING(all_parents), FALSE); |
5dac72a7 JH |
1298 | |
1299 | if (*queue_name) | |
acec9514 | 1300 | g = string_append(g, 2, US" Q=", queue_name); |
5dac72a7 JH |
1301 | |
1302 | /* Either driver_name contains something and driver_kind contains | |
1303 | " router" or " transport" (note the leading space), or driver_name is | |
1304 | a null string and driver_kind contains "routing" without the leading | |
1305 | space, if all routing has been deferred. When a domain has been held, | |
1306 | so nothing has been done at all, both variables contain null strings. */ | |
1307 | ||
1308 | if (driver_name) | |
1309 | { | |
1310 | if (driver_kind[1] == 't' && addr->router) | |
acec9514 | 1311 | g = string_append(g, 2, US" R=", addr->router->name); |
d12746bc | 1312 | g = string_fmt_append(g, " %c=%s", toupper(driver_kind[1]), driver_name); |
5dac72a7 JH |
1313 | } |
1314 | else if (driver_kind) | |
acec9514 | 1315 | g = string_append(g, 2, US" ", driver_kind); |
5dac72a7 | 1316 | |
d12746bc | 1317 | g = string_fmt_append(g, " defer (%d)", addr->basic_errno); |
5dac72a7 JH |
1318 | |
1319 | if (addr->basic_errno > 0) | |
acec9514 | 1320 | g = string_append(g, 2, US": ", |
5dac72a7 JH |
1321 | US strerror(addr->basic_errno)); |
1322 | ||
1323 | if (addr->host_used) | |
1324 | { | |
acec9514 | 1325 | g = string_append(g, 5, |
5dac72a7 JH |
1326 | US" H=", addr->host_used->name, |
1327 | US" [", addr->host_used->address, US"]"); | |
1328 | if (LOGGING(outgoing_port)) | |
1329 | { | |
1330 | int port = addr->host_used->port; | |
d12746bc | 1331 | g = string_fmt_append(g, ":%d", port == PORT_NONE ? 25 : port); |
5dac72a7 JH |
1332 | } |
1333 | } | |
1334 | ||
a55697ac JH |
1335 | if (LOGGING(deliver_time)) |
1336 | g = string_append(g, 2, US" DT=", string_timediff(&addr->delivery_time)); | |
1337 | ||
5dac72a7 | 1338 | if (addr->message) |
acec9514 | 1339 | g = string_append(g, 2, US": ", addr->message); |
5dac72a7 | 1340 | |
acec9514 | 1341 | (void) string_from_gstring(g); |
5dac72a7 JH |
1342 | |
1343 | /* Log the deferment in the message log, but don't clutter it | |
1344 | up with retry-time defers after the first delivery attempt. */ | |
1345 | ||
8768d548 | 1346 | if (f.deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE) |
acec9514 | 1347 | deliver_msglog("%s %s\n", now, g->s); |
5dac72a7 JH |
1348 | |
1349 | /* Write the main log and reset the store. | |
1350 | For errors of the type "retry time not reached" (also remotes skipped | |
1351 | on queue run), logging is controlled by L_retry_defer. Note that this kind | |
1352 | of error number is negative, and all the retry ones are less than any | |
1353 | others. */ | |
1354 | ||
1355 | ||
1356 | log_write(addr->basic_errno <= ERRNO_RETRY_BASE ? L_retry_defer : 0, logflags, | |
acec9514 | 1357 | "== %s", g->s); |
5dac72a7 JH |
1358 | |
1359 | store_reset(reset_point); | |
1360 | return; | |
1361 | } | |
1362 | ||
1363 | ||
1364 | ||
1365 | static void | |
1366 | failure_log(address_item * addr, uschar * driver_kind, uschar * now) | |
1367 | { | |
f3ebb786 JH |
1368 | rmark reset_point = store_mark(); |
1369 | gstring * g = string_get(256); | |
5dac72a7 | 1370 | |
ffbc20ed MK |
1371 | #ifndef DISABLE_EVENT |
1372 | /* Message failures for which we will send a DSN get their event raised | |
1373 | later so avoid doing it here. */ | |
1374 | ||
1375 | if ( !addr->prop.ignore_error | |
1376 | && !(addr->dsn_flags & (rf_dsnflags & ~rf_notify_failure)) | |
1377 | ) | |
1378 | msg_event_raise(US"msg:fail:delivery", addr); | |
1379 | #endif | |
1380 | ||
5dac72a7 JH |
1381 | /* Build up the log line for the message and main logs */ |
1382 | ||
5dac72a7 JH |
1383 | /* Create the address string for logging. Must not do this earlier, because |
1384 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1385 | ||
acec9514 | 1386 | g = string_log_address(g, addr, LOGGING(all_parents), FALSE); |
5dac72a7 JH |
1387 | |
1388 | if (LOGGING(sender_on_delivery)) | |
acec9514 | 1389 | g = string_append(g, 3, US" F=<", sender_address, US">"); |
5dac72a7 JH |
1390 | |
1391 | if (*queue_name) | |
acec9514 | 1392 | g = string_append(g, 2, US" Q=", queue_name); |
5dac72a7 JH |
1393 | |
1394 | /* Return path may not be set if no delivery actually happened */ | |
1395 | ||
1396 | if (used_return_path && LOGGING(return_path_on_delivery)) | |
acec9514 | 1397 | g = string_append(g, 3, US" P=<", used_return_path, US">"); |
5dac72a7 JH |
1398 | |
1399 | if (addr->router) | |
acec9514 | 1400 | g = string_append(g, 2, US" R=", addr->router->name); |
5dac72a7 | 1401 | if (addr->transport) |
acec9514 | 1402 | g = string_append(g, 2, US" T=", addr->transport->name); |
5dac72a7 JH |
1403 | |
1404 | if (addr->host_used) | |
acec9514 | 1405 | g = d_hostlog(g, addr); |
5dac72a7 | 1406 | |
01603eec | 1407 | #ifndef DISABLE_TLS |
acec9514 | 1408 | g = d_tlslog(g, addr); |
5dac72a7 JH |
1409 | #endif |
1410 | ||
1411 | if (addr->basic_errno > 0) | |
acec9514 | 1412 | g = string_append(g, 2, US": ", US strerror(addr->basic_errno)); |
5dac72a7 JH |
1413 | |
1414 | if (addr->message) | |
acec9514 | 1415 | g = string_append(g, 2, US": ", addr->message); |
5dac72a7 | 1416 | |
a55697ac JH |
1417 | if (LOGGING(deliver_time)) |
1418 | g = string_append(g, 2, US" DT=", string_timediff(&addr->delivery_time)); | |
1419 | ||
acec9514 | 1420 | (void) string_from_gstring(g); |
5dac72a7 JH |
1421 | |
1422 | /* Do the logging. For the message log, "routing failed" for those cases, | |
1423 | just to make it clearer. */ | |
1424 | ||
1425 | if (driver_kind) | |
acec9514 | 1426 | deliver_msglog("%s %s failed for %s\n", now, driver_kind, g->s); |
5dac72a7 | 1427 | else |
acec9514 | 1428 | deliver_msglog("%s %s\n", now, g->s); |
5dac72a7 | 1429 | |
acec9514 | 1430 | log_write(0, LOG_MAIN, "** %s", g->s); |
5dac72a7 | 1431 | |
5dac72a7 JH |
1432 | store_reset(reset_point); |
1433 | return; | |
1434 | } | |
1435 | ||
1436 | ||
1437 | ||
059ec3d9 PH |
1438 | /************************************************* |
1439 | * Actions at the end of handling an address * | |
1440 | *************************************************/ | |
1441 | ||
1442 | /* This is a function for processing a single address when all that can be done | |
1443 | with it has been done. | |
1444 | ||
1445 | Arguments: | |
1446 | addr points to the address block | |
1447 | result the result of the delivery attempt | |
1448 | logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC) | |
1449 | driver_type indicates which type of driver (transport, or router) was last | |
1450 | to process the address | |
1451 | logchar '=' or '-' for use when logging deliveries with => or -> | |
1452 | ||
1453 | Returns: nothing | |
1454 | */ | |
1455 | ||
1456 | static void | |
1457 | post_process_one(address_item *addr, int result, int logflags, int driver_type, | |
1458 | int logchar) | |
1459 | { | |
1460 | uschar *now = tod_stamp(tod_log); | |
1461 | uschar *driver_kind = NULL; | |
1462 | uschar *driver_name = NULL; | |
059ec3d9 | 1463 | |
059ec3d9 PH |
1464 | DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result); |
1465 | ||
1466 | /* Set up driver kind and name for logging. Disable logging if the router or | |
1467 | transport has disabled it. */ | |
1468 | ||
ba936fb8 | 1469 | if (driver_type == EXIM_DTYPE_TRANSPORT) |
059ec3d9 | 1470 | { |
d6c82d7b | 1471 | if (addr->transport) |
059ec3d9 PH |
1472 | { |
1473 | driver_name = addr->transport->name; | |
1474 | driver_kind = US" transport"; | |
8768d548 | 1475 | f.disable_logging = addr->transport->disable_logging; |
059ec3d9 PH |
1476 | } |
1477 | else driver_kind = US"transporting"; | |
1478 | } | |
ba936fb8 | 1479 | else if (driver_type == EXIM_DTYPE_ROUTER) |
059ec3d9 | 1480 | { |
d6c82d7b | 1481 | if (addr->router) |
059ec3d9 PH |
1482 | { |
1483 | driver_name = addr->router->name; | |
1484 | driver_kind = US" router"; | |
8768d548 | 1485 | f.disable_logging = addr->router->disable_logging; |
059ec3d9 PH |
1486 | } |
1487 | else driver_kind = US"routing"; | |
1488 | } | |
1489 | ||
1490 | /* If there's an error message set, ensure that it contains only printing | |
1491 | characters - it should, but occasionally things slip in and this at least | |
49c2d5ea PH |
1492 | stops the log format from getting wrecked. We also scan the message for an LDAP |
1493 | expansion item that has a password setting, and flatten the password. This is a | |
1494 | fudge, but I don't know a cleaner way of doing this. (If the item is badly | |
1495 | malformed, it won't ever have gone near LDAP.) */ | |
059ec3d9 | 1496 | |
d6c82d7b | 1497 | if (addr->message) |
49c2d5ea | 1498 | { |
55414b25 | 1499 | const uschar * s = string_printing(addr->message); |
f42deca9 JH |
1500 | |
1501 | /* deconst cast ok as string_printing known to have alloc'n'copied */ | |
1502 | addr->message = expand_hide_passwords(US s); | |
49c2d5ea | 1503 | } |
059ec3d9 PH |
1504 | |
1505 | /* If we used a transport that has one of the "return_output" options set, and | |
1506 | if it did in fact generate some output, then for return_output we treat the | |
1507 | message as failed if it was not already set that way, so that the output gets | |
1508 | returned to the sender, provided there is a sender to send it to. For | |
1509 | return_fail_output, do this only if the delivery failed. Otherwise we just | |
1510 | unlink the file, and remove the name so that if the delivery failed, we don't | |
1511 | try to send back an empty or unwanted file. The log_output options operate only | |
1512 | on a non-empty file. | |
1513 | ||
1514 | In any case, we close the message file, because we cannot afford to leave a | |
1515 | file-descriptor for one address while processing (maybe very many) others. */ | |
1516 | ||
d6c82d7b | 1517 | if (addr->return_file >= 0 && addr->return_filename) |
059ec3d9 PH |
1518 | { |
1519 | BOOL return_output = FALSE; | |
1520 | struct stat statbuf; | |
54fc8428 | 1521 | (void)EXIMfsync(addr->return_file); |
059ec3d9 PH |
1522 | |
1523 | /* If there is no output, do nothing. */ | |
1524 | ||
1525 | if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0) | |
1526 | { | |
1527 | transport_instance *tb = addr->transport; | |
1528 | ||
1529 | /* Handle logging options */ | |
1530 | ||
d6c82d7b JH |
1531 | if ( tb->log_output |
1532 | || result == FAIL && tb->log_fail_output | |
1533 | || result == DEFER && tb->log_defer_output | |
1534 | ) | |
059ec3d9 PH |
1535 | { |
1536 | uschar *s; | |
1537 | FILE *f = Ufopen(addr->return_filename, "rb"); | |
d6c82d7b | 1538 | if (!f) |
059ec3d9 PH |
1539 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output " |
1540 | "from %s transport: %s", addr->return_filename, tb->name, | |
1541 | strerror(errno)); | |
1542 | else | |
d6c82d7b | 1543 | if ((s = US Ufgets(big_buffer, big_buffer_size, f))) |
059ec3d9 PH |
1544 | { |
1545 | uschar *p = big_buffer + Ustrlen(big_buffer); | |
55414b25 | 1546 | const uschar * sp; |
059ec3d9 PH |
1547 | while (p > big_buffer && isspace(p[-1])) p--; |
1548 | *p = 0; | |
55414b25 | 1549 | sp = string_printing(big_buffer); |
059ec3d9 | 1550 | log_write(0, LOG_MAIN, "<%s>: %s transport output: %s", |
55414b25 | 1551 | addr->address, tb->name, sp); |
059ec3d9 | 1552 | } |
0e8aed8a | 1553 | (void)fclose(f); |
059ec3d9 PH |
1554 | } |
1555 | ||
1556 | /* Handle returning options, but only if there is an address to return | |
1557 | the text to. */ | |
1558 | ||
d6c82d7b | 1559 | if (sender_address[0] != 0 || addr->prop.errors_address) |
059ec3d9 PH |
1560 | if (tb->return_output) |
1561 | { | |
1562 | addr->transport_return = result = FAIL; | |
d6c82d7b | 1563 | if (addr->basic_errno == 0 && !addr->message) |
059ec3d9 PH |
1564 | addr->message = US"return message generated"; |
1565 | return_output = TRUE; | |
1566 | } | |
1567 | else | |
1568 | if (tb->return_fail_output && result == FAIL) return_output = TRUE; | |
059ec3d9 PH |
1569 | } |
1570 | ||
1571 | /* Get rid of the file unless it might be returned, but close it in | |
1572 | all cases. */ | |
1573 | ||
1574 | if (!return_output) | |
1575 | { | |
1576 | Uunlink(addr->return_filename); | |
1577 | addr->return_filename = NULL; | |
1578 | addr->return_file = -1; | |
1579 | } | |
1580 | ||
f1e894f3 | 1581 | (void)close(addr->return_file); |
059ec3d9 PH |
1582 | } |
1583 | ||
9d1c15ef | 1584 | /* The success case happens only after delivery by a transport. */ |
059ec3d9 PH |
1585 | |
1586 | if (result == OK) | |
1587 | { | |
1588 | addr->next = addr_succeed; | |
1589 | addr_succeed = addr; | |
1590 | ||
1591 | /* Call address_done() to ensure that we don't deliver to this address again, | |
1592 | and write appropriate things to the message log. If it is a child address, we | |
1593 | call child_done() to scan the ancestors and mark them complete if this is the | |
1594 | last child to complete. */ | |
1595 | ||
1596 | address_done(addr, now); | |
1597 | DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address); | |
1598 | ||
d6c82d7b | 1599 | if (!addr->parent) |
059ec3d9 PH |
1600 | deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address, |
1601 | driver_name, driver_kind); | |
059ec3d9 PH |
1602 | else |
1603 | { | |
1604 | deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address, | |
1605 | addr->parent->address, driver_name, driver_kind); | |
1606 | child_done(addr, now); | |
1607 | } | |
1608 | ||
774ef2d7 | 1609 | /* Certificates for logging (via events) */ |
01603eec | 1610 | #ifndef DISABLE_TLS |
9d1c15ef JH |
1611 | tls_out.ourcert = addr->ourcert; |
1612 | addr->ourcert = NULL; | |
1613 | tls_out.peercert = addr->peercert; | |
1614 | addr->peercert = NULL; | |
018058b2 | 1615 | |
da40b1ec | 1616 | tls_out.ver = addr->tlsver; |
018058b2 JH |
1617 | tls_out.cipher = addr->cipher; |
1618 | tls_out.peerdn = addr->peerdn; | |
1619 | tls_out.ocsp = addr->ocsp; | |
c0635b6d | 1620 | # ifdef SUPPORT_DANE |
83b27293 JH |
1621 | tls_out.dane_verified = testflag(addr, af_dane_verified); |
1622 | # endif | |
a7538db1 | 1623 | #endif |
9d1c15ef | 1624 | |
817d9f57 | 1625 | delivery_log(LOG_MAIN, addr, logchar, NULL); |
9d1c15ef | 1626 | |
01603eec | 1627 | #ifndef DISABLE_TLS |
790fbb71 JH |
1628 | tls_free_cert(&tls_out.ourcert); |
1629 | tls_free_cert(&tls_out.peercert); | |
da40b1ec | 1630 | tls_out.ver = NULL; |
018058b2 JH |
1631 | tls_out.cipher = NULL; |
1632 | tls_out.peerdn = NULL; | |
1633 | tls_out.ocsp = OCSP_NOT_REQ; | |
c0635b6d | 1634 | # ifdef SUPPORT_DANE |
83b27293 JH |
1635 | tls_out.dane_verified = FALSE; |
1636 | # endif | |
a7538db1 | 1637 | #endif |
059ec3d9 PH |
1638 | } |
1639 | ||
1640 | ||
1641 | /* Soft failure, or local delivery process failed; freezing may be | |
1642 | requested. */ | |
1643 | ||
1644 | else if (result == DEFER || result == PANIC) | |
1645 | { | |
1646 | if (result == PANIC) logflags |= LOG_PANIC; | |
1647 | ||
1648 | /* This puts them on the chain in reverse order. Do not change this, because | |
1649 | the code for handling retries assumes that the one with the retry | |
1650 | information is last. */ | |
1651 | ||
1652 | addr->next = addr_defer; | |
1653 | addr_defer = addr; | |
1654 | ||
1655 | /* The only currently implemented special action is to freeze the | |
1656 | message. Logging of this is done later, just before the -H file is | |
1657 | updated. */ | |
1658 | ||
1659 | if (addr->special_action == SPECIAL_FREEZE) | |
1660 | { | |
8768d548 | 1661 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
1662 | deliver_frozen_at = time(NULL); |
1663 | update_spool = TRUE; | |
1664 | } | |
1665 | ||
1666 | /* If doing a 2-stage queue run, we skip writing to either the message | |
1667 | log or the main log for SMTP defers. */ | |
1668 | ||
8768d548 | 1669 | if (!f.queue_2stage || addr->basic_errno != 0) |
5dac72a7 | 1670 | deferral_log(addr, now, logflags, driver_name, driver_kind); |
059ec3d9 PH |
1671 | } |
1672 | ||
1673 | ||
1674 | /* Hard failure. If there is an address to which an error message can be sent, | |
1675 | put this address on the failed list. If not, put it on the deferred list and | |
1676 | freeze the mail message for human attention. The latter action can also be | |
1677 | explicitly requested by a router or transport. */ | |
1678 | ||
1679 | else | |
1680 | { | |
1681 | /* If this is a delivery error, or a message for which no replies are | |
1682 | wanted, and the message's age is greater than ignore_bounce_errors_after, | |
1683 | force the af_ignore_error flag. This will cause the address to be discarded | |
1684 | later (with a log entry). */ | |
1685 | ||
10c50704 | 1686 | if (!*sender_address && message_age >= ignore_bounce_errors_after) |
7eb0e5d2 | 1687 | addr->prop.ignore_error = TRUE; |
059ec3d9 PH |
1688 | |
1689 | /* Freeze the message if requested, or if this is a bounce message (or other | |
652e1b65 PH |
1690 | message with null sender) and this address does not have its own errors |
1691 | address. However, don't freeze if errors are being ignored. The actual code | |
1692 | to ignore occurs later, instead of sending a message. Logging of freezing | |
1693 | occurs later, just before writing the -H file. */ | |
059ec3d9 | 1694 | |
7eb0e5d2 | 1695 | if ( !addr->prop.ignore_error |
d6c82d7b JH |
1696 | && ( addr->special_action == SPECIAL_FREEZE |
1697 | || (sender_address[0] == 0 && !addr->prop.errors_address) | |
1698 | ) ) | |
059ec3d9 | 1699 | { |
d6c82d7b JH |
1700 | frozen_info = addr->special_action == SPECIAL_FREEZE |
1701 | ? US"" | |
8768d548 | 1702 | : f.sender_local && !f.local_error_message |
d6c82d7b JH |
1703 | ? US" (message created with -f <>)" |
1704 | : US" (delivery error message)"; | |
8768d548 | 1705 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
1706 | deliver_frozen_at = time(NULL); |
1707 | update_spool = TRUE; | |
1708 | ||
1709 | /* The address is put on the defer rather than the failed queue, because | |
1710 | the message is being retained. */ | |
1711 | ||
1712 | addr->next = addr_defer; | |
1713 | addr_defer = addr; | |
1714 | } | |
1715 | ||
1716 | /* Don't put the address on the nonrecipients tree yet; wait until an | |
1717 | error message has been successfully sent. */ | |
1718 | ||
1719 | else | |
1720 | { | |
1721 | addr->next = addr_failed; | |
1722 | addr_failed = addr; | |
1723 | } | |
1724 | ||
5dac72a7 | 1725 | failure_log(addr, driver_name ? NULL : driver_kind, now); |
059ec3d9 PH |
1726 | } |
1727 | ||
1728 | /* Ensure logging is turned on again in all cases */ | |
1729 | ||
8768d548 | 1730 | f.disable_logging = FALSE; |
059ec3d9 PH |
1731 | } |
1732 | ||
1733 | ||
1734 | ||
1735 | ||
1736 | /************************************************* | |
1737 | * Address-independent error * | |
1738 | *************************************************/ | |
1739 | ||
1740 | /* This function is called when there's an error that is not dependent on a | |
1741 | particular address, such as an expansion string failure. It puts the error into | |
1742 | all the addresses in a batch, logs the incident on the main and panic logs, and | |
1743 | clears the expansions. It is mostly called from local_deliver(), but can be | |
1744 | called for a remote delivery via findugid(). | |
1745 | ||
1746 | Arguments: | |
1747 | logit TRUE if (MAIN+PANIC) logging required | |
1748 | addr the first of the chain of addresses | |
1749 | code the error code | |
1750 | format format string for error message, or NULL if already set in addr | |
1751 | ... arguments for the format | |
1752 | ||
1753 | Returns: nothing | |
1754 | */ | |
1755 | ||
1756 | static void | |
1757 | common_error(BOOL logit, address_item *addr, int code, uschar *format, ...) | |
1758 | { | |
059ec3d9 PH |
1759 | addr->basic_errno = code; |
1760 | ||
d6c82d7b | 1761 | if (format) |
059ec3d9 PH |
1762 | { |
1763 | va_list ap; | |
d12746bc JH |
1764 | gstring * g; |
1765 | ||
059ec3d9 | 1766 | va_start(ap, format); |
f3ebb786 | 1767 | g = string_vformat(NULL, SVFMT_EXTEND|SVFMT_REBUFFER, CS format, ap); |
059ec3d9 | 1768 | va_end(ap); |
d12746bc | 1769 | addr->message = string_from_gstring(g); |
059ec3d9 PH |
1770 | } |
1771 | ||
d7978c0f | 1772 | for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 PH |
1773 | { |
1774 | addr2->basic_errno = code; | |
1775 | addr2->message = addr->message; | |
1776 | } | |
1777 | ||
1778 | if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message); | |
1779 | deliver_set_expansions(NULL); | |
1780 | } | |
1781 | ||
1782 | ||
1783 | ||
1784 | ||
1785 | /************************************************* | |
1786 | * Check a "never users" list * | |
1787 | *************************************************/ | |
1788 | ||
1789 | /* This function is called to check whether a uid is on one of the two "never | |
1790 | users" lists. | |
1791 | ||
1792 | Arguments: | |
1793 | uid the uid to be checked | |
1794 | nusers the list to be scanned; the first item in the list is the count | |
1795 | ||
1796 | Returns: TRUE if the uid is on the list | |
1797 | */ | |
1798 | ||
1799 | static BOOL | |
1800 | check_never_users(uid_t uid, uid_t *nusers) | |
1801 | { | |
d6c82d7b | 1802 | if (!nusers) return FALSE; |
d7978c0f | 1803 | for (int i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE; |
059ec3d9 PH |
1804 | return FALSE; |
1805 | } | |
1806 | ||
1807 | ||
1808 | ||
1809 | /************************************************* | |
1810 | * Find uid and gid for a transport * | |
1811 | *************************************************/ | |
1812 | ||
1813 | /* This function is called for both local and remote deliveries, to find the | |
1814 | uid/gid under which to run the delivery. The values are taken preferentially | |
1815 | from the transport (either explicit or deliver_as_creator), then from the | |
1816 | address (i.e. the router), and if nothing is set, the exim uid/gid are used. If | |
1817 | the resulting uid is on the "never_users" or the "fixed_never_users" list, a | |
1818 | panic error is logged, and the function fails (which normally leads to delivery | |
1819 | deferral). | |
1820 | ||
1821 | Arguments: | |
1822 | addr the address (possibly a chain) | |
1823 | tp the transport | |
1824 | uidp pointer to uid field | |
1825 | gidp pointer to gid field | |
1826 | igfp pointer to the use_initgroups field | |
1827 | ||
1828 | Returns: FALSE if failed - error has been set in address(es) | |
1829 | */ | |
1830 | ||
1831 | static BOOL | |
1832 | findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp, | |
1833 | BOOL *igfp) | |
1834 | { | |
d6c82d7b | 1835 | uschar *nuname; |
059ec3d9 PH |
1836 | BOOL gid_set = FALSE; |
1837 | ||
1838 | /* Default initgroups flag comes from the transport */ | |
1839 | ||
1840 | *igfp = tp->initgroups; | |
1841 | ||
1842 | /* First see if there's a gid on the transport, either fixed or expandable. | |
1843 | The expanding function always logs failure itself. */ | |
1844 | ||
1845 | if (tp->gid_set) | |
1846 | { | |
1847 | *gidp = tp->gid; | |
1848 | gid_set = TRUE; | |
1849 | } | |
d6c82d7b | 1850 | else if (tp->expand_gid) |
059ec3d9 | 1851 | { |
d6c82d7b JH |
1852 | if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp, |
1853 | &(addr->message))) | |
059ec3d9 PH |
1854 | { |
1855 | common_error(FALSE, addr, ERRNO_GIDFAIL, NULL); | |
1856 | return FALSE; | |
1857 | } | |
d6c82d7b | 1858 | gid_set = TRUE; |
059ec3d9 PH |
1859 | } |
1860 | ||
911f6fde PH |
1861 | /* If the transport did not set a group, see if the router did. */ |
1862 | ||
1863 | if (!gid_set && testflag(addr, af_gid_set)) | |
1864 | { | |
1865 | *gidp = addr->gid; | |
1866 | gid_set = TRUE; | |
1867 | } | |
1868 | ||
059ec3d9 PH |
1869 | /* Pick up a uid from the transport if one is set. */ |
1870 | ||
1871 | if (tp->uid_set) *uidp = tp->uid; | |
1872 | ||
1873 | /* Otherwise, try for an expandable uid field. If it ends up as a numeric id, | |
1874 | it does not provide a passwd value from which a gid can be taken. */ | |
1875 | ||
d6c82d7b | 1876 | else if (tp->expand_uid) |
059ec3d9 PH |
1877 | { |
1878 | struct passwd *pw; | |
1879 | if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw, | |
1880 | uidp, &(addr->message))) | |
1881 | { | |
1882 | common_error(FALSE, addr, ERRNO_UIDFAIL, NULL); | |
1883 | return FALSE; | |
1884 | } | |
d6c82d7b | 1885 | if (!gid_set && pw) |
059ec3d9 PH |
1886 | { |
1887 | *gidp = pw->pw_gid; | |
1888 | gid_set = TRUE; | |
1889 | } | |
1890 | } | |
1891 | ||
1892 | /* If the transport doesn't set the uid, test the deliver_as_creator flag. */ | |
1893 | ||
1894 | else if (tp->deliver_as_creator) | |
1895 | { | |
1896 | *uidp = originator_uid; | |
1897 | if (!gid_set) | |
1898 | { | |
1899 | *gidp = originator_gid; | |
1900 | gid_set = TRUE; | |
1901 | } | |
1902 | } | |
1903 | ||
911f6fde PH |
1904 | /* Otherwise see if the address specifies the uid and if so, take it and its |
1905 | initgroups flag. */ | |
059ec3d9 PH |
1906 | |
1907 | else if (testflag(addr, af_uid_set)) | |
1908 | { | |
1909 | *uidp = addr->uid; | |
1910 | *igfp = testflag(addr, af_initgroups); | |
059ec3d9 PH |
1911 | } |
1912 | ||
1913 | /* Nothing has specified the uid - default to the Exim user, and group if the | |
1914 | gid is not set. */ | |
1915 | ||
1916 | else | |
1917 | { | |
1918 | *uidp = exim_uid; | |
1919 | if (!gid_set) | |
1920 | { | |
1921 | *gidp = exim_gid; | |
1922 | gid_set = TRUE; | |
1923 | } | |
1924 | } | |
1925 | ||
911f6fde PH |
1926 | /* If no gid is set, it is a disaster. We default to the Exim gid only if |
1927 | defaulting to the Exim uid. In other words, if the configuration has specified | |
1928 | a uid, it must also provide a gid. */ | |
059ec3d9 PH |
1929 | |
1930 | if (!gid_set) | |
1931 | { | |
1932 | common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for " | |
1933 | "%s transport", tp->name); | |
1934 | return FALSE; | |
1935 | } | |
1936 | ||
1937 | /* Check that the uid is not on the lists of banned uids that may not be used | |
1938 | for delivery processes. */ | |
1939 | ||
d6c82d7b JH |
1940 | nuname = check_never_users(*uidp, never_users) |
1941 | ? US"never_users" | |
1942 | : check_never_users(*uidp, fixed_never_users) | |
1943 | ? US"fixed_never_users" | |
1944 | : NULL; | |
1945 | if (nuname) | |
059ec3d9 PH |
1946 | { |
1947 | common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport " | |
1948 | "is on the %s list", (long int)(*uidp), tp->name, nuname); | |
1949 | return FALSE; | |
1950 | } | |
1951 | ||
1952 | /* All is well */ | |
1953 | ||
1954 | return TRUE; | |
1955 | } | |
1956 | ||
1957 | ||
1958 | ||
1959 | ||
1960 | /************************************************* | |
1961 | * Check the size of a message for a transport * | |
1962 | *************************************************/ | |
1963 | ||
1964 | /* Checks that the message isn't too big for the selected transport. | |
1965 | This is called only when it is known that the limit is set. | |
1966 | ||
1967 | Arguments: | |
1968 | tp the transport | |
1969 | addr the (first) address being delivered | |
1970 | ||
1971 | Returns: OK | |
1972 | DEFER expansion failed or did not yield an integer | |
1973 | FAIL message too big | |
1974 | */ | |
1975 | ||
1976 | int | |
1977 | check_message_size(transport_instance *tp, address_item *addr) | |
1978 | { | |
1979 | int rc = OK; | |
1980 | int size_limit; | |
1981 | ||
1982 | deliver_set_expansions(addr); | |
d45b1de8 | 1983 | size_limit = expand_string_integer(tp->message_size_limit, TRUE); |
059ec3d9 PH |
1984 | deliver_set_expansions(NULL); |
1985 | ||
d6c82d7b | 1986 | if (expand_string_message) |
059ec3d9 PH |
1987 | { |
1988 | rc = DEFER; | |
d6c82d7b JH |
1989 | addr->message = size_limit == -1 |
1990 | ? string_sprintf("failed to expand message_size_limit " | |
1991 | "in %s transport: %s", tp->name, expand_string_message) | |
1992 | : string_sprintf("invalid message_size_limit " | |
059ec3d9 PH |
1993 | "in %s transport: %s", tp->name, expand_string_message); |
1994 | } | |
1995 | else if (size_limit > 0 && message_size > size_limit) | |
1996 | { | |
1997 | rc = FAIL; | |
1998 | addr->message = | |
1999 | string_sprintf("message is too big (transport limit = %d)", | |
2000 | size_limit); | |
2001 | } | |
2002 | ||
2003 | return rc; | |
2004 | } | |
2005 | ||
2006 | ||
2007 | ||
2008 | /************************************************* | |
2009 | * Transport-time check for a previous delivery * | |
2010 | *************************************************/ | |
2011 | ||
2012 | /* Check that this base address hasn't previously been delivered to its routed | |
c2c19e9d PH |
2013 | transport. If it has been delivered, mark it done. The check is necessary at |
2014 | delivery time in order to handle homonymic addresses correctly in cases where | |
2015 | the pattern of redirection changes between delivery attempts (so the unique | |
2016 | fields change). Non-homonymic previous delivery is detected earlier, at routing | |
2017 | time (which saves unnecessary routing). | |
2018 | ||
2019 | Arguments: | |
2020 | addr the address item | |
2021 | testing TRUE if testing wanted only, without side effects | |
059ec3d9 | 2022 | |
059ec3d9 PH |
2023 | Returns: TRUE if previously delivered by the transport |
2024 | */ | |
2025 | ||
2026 | static BOOL | |
c2c19e9d | 2027 | previously_transported(address_item *addr, BOOL testing) |
059ec3d9 | 2028 | { |
f3ebb786 | 2029 | uschar * s = string_sprintf("%s/%s", |
059ec3d9 PH |
2030 | addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name); |
2031 | ||
f3ebb786 | 2032 | if (tree_search(tree_nonrecipients, s) != 0) |
059ec3d9 PH |
2033 | { |
2034 | DEBUG(D_deliver|D_route|D_transport) | |
2035 | debug_printf("%s was previously delivered (%s transport): discarded\n", | |
2036 | addr->address, addr->transport->name); | |
c2c19e9d | 2037 | if (!testing) child_done(addr, tod_stamp(tod_log)); |
059ec3d9 PH |
2038 | return TRUE; |
2039 | } | |
2040 | ||
2041 | return FALSE; | |
2042 | } | |
2043 | ||
2044 | ||
2045 | ||
064a94c9 PH |
2046 | /****************************************************** |
2047 | * Check for a given header in a header string * | |
2048 | ******************************************************/ | |
2049 | ||
2050 | /* This function is used when generating quota warnings. The configuration may | |
2051 | specify any header lines it likes in quota_warn_message. If certain of them are | |
2052 | missing, defaults are inserted, so we need to be able to test for the presence | |
2053 | of a given header. | |
2054 | ||
2055 | Arguments: | |
2056 | hdr the required header name | |
2057 | hstring the header string | |
2058 | ||
2059 | Returns: TRUE the header is in the string | |
2060 | FALSE the header is not in the string | |
2061 | */ | |
2062 | ||
2063 | static BOOL | |
2064 | contains_header(uschar *hdr, uschar *hstring) | |
2065 | { | |
2066 | int len = Ustrlen(hdr); | |
2067 | uschar *p = hstring; | |
2068 | while (*p != 0) | |
2069 | { | |
2070 | if (strncmpic(p, hdr, len) == 0) | |
2071 | { | |
2072 | p += len; | |
2073 | while (*p == ' ' || *p == '\t') p++; | |
2074 | if (*p == ':') return TRUE; | |
2075 | } | |
2076 | while (*p != 0 && *p != '\n') p++; | |
2077 | if (*p == '\n') p++; | |
2078 | } | |
2079 | return FALSE; | |
2080 | } | |
2081 | ||
2082 | ||
2083 | ||
059ec3d9 PH |
2084 | |
2085 | /************************************************* | |
2086 | * Perform a local delivery * | |
2087 | *************************************************/ | |
2088 | ||
2089 | /* Each local delivery is performed in a separate process which sets its | |
2090 | uid and gid as specified. This is a safer way than simply changing and | |
2091 | restoring using seteuid(); there is a body of opinion that seteuid() cannot be | |
2092 | used safely. From release 4, Exim no longer makes any use of it. Besides, not | |
2093 | all systems have seteuid(). | |
2094 | ||
2095 | If the uid/gid are specified in the transport_instance, they are used; the | |
2096 | transport initialization must ensure that either both or neither are set. | |
2097 | Otherwise, the values associated with the address are used. If neither are set, | |
2098 | it is a configuration error. | |
2099 | ||
2100 | The transport or the address may specify a home directory (transport over- | |
2101 | rides), and if they do, this is set as $home. If neither have set a working | |
2102 | directory, this value is used for that as well. Otherwise $home is left unset | |
2103 | and the cwd is set to "/" - a directory that should be accessible to all users. | |
2104 | ||
2105 | Using a separate process makes it more complicated to get error information | |
2106 | back. We use a pipe to pass the return code and also an error code and error | |
2107 | text string back to the parent process. | |
2108 | ||
2109 | Arguments: | |
2110 | addr points to an address block for this delivery; for "normal" local | |
2111 | deliveries this is the only address to be delivered, but for | |
2112 | pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe) | |
2113 | a number of addresses can be handled simultaneously, and in this | |
2114 | case addr will point to a chain of addresses with the same | |
2115 | characteristics. | |
2116 | ||
2117 | shadowing TRUE if running a shadow transport; this causes output from pipes | |
2118 | to be ignored. | |
2119 | ||
2120 | Returns: nothing | |
2121 | */ | |
2122 | ||
2123 | static void | |
2124 | deliver_local(address_item *addr, BOOL shadowing) | |
2125 | { | |
2126 | BOOL use_initgroups; | |
2127 | uid_t uid; | |
2128 | gid_t gid; | |
2129 | int status, len, rc; | |
2130 | int pfd[2]; | |
2131 | pid_t pid; | |
2132 | uschar *working_directory; | |
2133 | address_item *addr2; | |
2134 | transport_instance *tp = addr->transport; | |
2135 | ||
2136 | /* Set up the return path from the errors or sender address. If the transport | |
2137 | has its own return path setting, expand it and replace the existing value. */ | |
2138 | ||
d6c82d7b | 2139 | if(addr->prop.errors_address) |
d43cbe25 | 2140 | return_path = addr->prop.errors_address; |
384152a6 | 2141 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 2142 | else if (addr->prop.srs_sender) |
d43cbe25 | 2143 | return_path = addr->prop.srs_sender; |
384152a6 TK |
2144 | #endif |
2145 | else | |
2146 | return_path = sender_address; | |
059ec3d9 | 2147 | |
d6c82d7b | 2148 | if (tp->return_path) |
059ec3d9 PH |
2149 | { |
2150 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b | 2151 | if (!new_return_path) |
059ec3d9 | 2152 | { |
8768d548 | 2153 | if (!f.expand_string_forcedfail) |
059ec3d9 PH |
2154 | { |
2155 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, | |
2156 | US"Failed to expand return path \"%s\" in %s transport: %s", | |
2157 | tp->return_path, tp->name, expand_string_message); | |
2158 | return; | |
2159 | } | |
2160 | } | |
2161 | else return_path = new_return_path; | |
2162 | } | |
2163 | ||
2164 | /* For local deliveries, one at a time, the value used for logging can just be | |
2165 | set directly, once and for all. */ | |
2166 | ||
2167 | used_return_path = return_path; | |
2168 | ||
2169 | /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message | |
2170 | gets put into the address(es), and the expansions are unset, so we can just | |
2171 | return. */ | |
2172 | ||
2173 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return; | |
2174 | ||
5418e93b PH |
2175 | /* See if either the transport or the address specifies a home directory. A |
2176 | home directory set in the address may already be expanded; a flag is set to | |
2177 | indicate that. In other cases we must expand it. */ | |
059ec3d9 | 2178 | |
d6c82d7b JH |
2179 | if ( (deliver_home = tp->home_dir) /* Set in transport, or */ |
2180 | || ( (deliver_home = addr->home_dir) /* Set in address and */ | |
2181 | && !testflag(addr, af_home_expanded) /* not expanded */ | |
2182 | ) ) | |
059ec3d9 PH |
2183 | { |
2184 | uschar *rawhome = deliver_home; | |
2185 | deliver_home = NULL; /* in case it contains $home */ | |
d6c82d7b | 2186 | if (!(deliver_home = expand_string(rawhome))) |
059ec3d9 PH |
2187 | { |
2188 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed " | |
2189 | "to expand for %s transport: %s", rawhome, tp->name, | |
2190 | expand_string_message); | |
2191 | return; | |
2192 | } | |
2193 | if (*deliver_home != '/') | |
2194 | { | |
2195 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" " | |
2196 | "is not absolute for %s transport", deliver_home, tp->name); | |
2197 | return; | |
2198 | } | |
2199 | } | |
2200 | ||
5418e93b PH |
2201 | /* See if either the transport or the address specifies a current directory, |
2202 | and if so, expand it. If nothing is set, use the home directory, unless it is | |
2203 | also unset in which case use "/", which is assumed to be a directory to which | |
2204 | all users have access. It is necessary to be in a visible directory for some | |
2205 | operating systems when running pipes, as some commands (e.g. "rm" under Solaris | |
2206 | 2.5) require this. */ | |
2207 | ||
d6c82d7b JH |
2208 | working_directory = tp->current_dir ? tp->current_dir : addr->current_dir; |
2209 | if (working_directory) | |
059ec3d9 PH |
2210 | { |
2211 | uschar *raw = working_directory; | |
d6c82d7b | 2212 | if (!(working_directory = expand_string(raw))) |
059ec3d9 PH |
2213 | { |
2214 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" " | |
2215 | "failed to expand for %s transport: %s", raw, tp->name, | |
2216 | expand_string_message); | |
2217 | return; | |
2218 | } | |
2219 | if (*working_directory != '/') | |
2220 | { | |
2221 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path " | |
2222 | "\"%s\" is not absolute for %s transport", working_directory, tp->name); | |
2223 | return; | |
2224 | } | |
2225 | } | |
d6c82d7b | 2226 | else working_directory = deliver_home ? deliver_home : US"/"; |
059ec3d9 PH |
2227 | |
2228 | /* If one of the return_output flags is set on the transport, create and open a | |
2229 | file in the message log directory for the transport to write its output onto. | |
2230 | This is mainly used by pipe transports. The file needs to be unique to the | |
2231 | address. This feature is not available for shadow transports. */ | |
2232 | ||
d6c82d7b JH |
2233 | if ( !shadowing |
2234 | && ( tp->return_output || tp->return_fail_output | |
ec0eb1a3 | 2235 | || tp->log_output || tp->log_fail_output || tp->log_defer_output |
d6c82d7b | 2236 | ) ) |
059ec3d9 | 2237 | { |
41313d92 JH |
2238 | uschar * error; |
2239 | ||
059ec3d9 | 2240 | addr->return_filename = |
41313d92 JH |
2241 | spool_fname(US"msglog", message_subdir, message_id, |
2242 | string_sprintf("-%d-%d", getpid(), return_count++)); | |
4c0a7a9c | 2243 | |
41313d92 | 2244 | if ((addr->return_file = open_msglog_file(addr->return_filename, 0400, &error)) < 0) |
059ec3d9 PH |
2245 | { |
2246 | common_error(TRUE, addr, errno, US"Unable to %s file for %s transport " | |
2247 | "to return message: %s", error, tp->name, strerror(errno)); | |
2248 | return; | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | /* Create the pipe for inter-process communication. */ | |
2253 | ||
2254 | if (pipe(pfd) != 0) | |
2255 | { | |
2256 | common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s", | |
2257 | strerror(errno)); | |
2258 | return; | |
2259 | } | |
2260 | ||
2261 | /* Now fork the process to do the real work in the subprocess, but first | |
2262 | ensure that all cached resources are freed so that the subprocess starts with | |
2263 | a clean slate and doesn't interfere with the parent process. */ | |
2264 | ||
2265 | search_tidyup(); | |
2266 | ||
2267 | if ((pid = fork()) == 0) | |
2268 | { | |
2269 | BOOL replicate = TRUE; | |
2270 | ||
2271 | /* Prevent core dumps, as we don't want them in users' home directories. | |
2272 | HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that | |
2273 | system. Some experimental/developing systems (e.g. GNU/Hurd) may define | |
2274 | RLIMIT_CORE but not support it in setrlimit(). For such systems, do not | |
a29e5231 PP |
2275 | complain if the error is "not supported". |
2276 | ||
2277 | There are two scenarios where changing the max limit has an effect. In one, | |
2278 | the user is using a .forward and invoking a command of their choice via pipe; | |
2279 | for these, we do need the max limit to be 0 unless the admin chooses to | |
2280 | permit an increased limit. In the other, the command is invoked directly by | |
2281 | the transport and is under administrator control, thus being able to raise | |
2282 | the limit aids in debugging. So there's no general always-right answer. | |
2283 | ||
2284 | Thus we inhibit core-dumps completely but let individual transports, while | |
2285 | still root, re-raise the limits back up to aid debugging. We make the | |
2286 | default be no core-dumps -- few enough people can use core dumps in | |
2287 | diagnosis that it's reasonable to make them something that has to be explicitly requested. | |
2288 | */ | |
059ec3d9 | 2289 | |
a7538db1 | 2290 | #ifdef RLIMIT_CORE |
059ec3d9 PH |
2291 | struct rlimit rl; |
2292 | rl.rlim_cur = 0; | |
2293 | rl.rlim_max = 0; | |
2294 | if (setrlimit(RLIMIT_CORE, &rl) < 0) | |
2295 | { | |
a7538db1 | 2296 | # ifdef SETRLIMIT_NOT_SUPPORTED |
059ec3d9 | 2297 | if (errno != ENOSYS && errno != ENOTSUP) |
a7538db1 | 2298 | # endif |
059ec3d9 PH |
2299 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s", |
2300 | strerror(errno)); | |
2301 | } | |
a7538db1 | 2302 | #endif |
059ec3d9 PH |
2303 | |
2304 | /* Reset the random number generator, so different processes don't all | |
2305 | have the same sequence. */ | |
2306 | ||
2307 | random_seed = 0; | |
2308 | ||
2309 | /* If the transport has a setup entry, call this first, while still | |
2310 | privileged. (Appendfile uses this to expand quota, for example, while | |
2311 | able to read private files.) */ | |
2312 | ||
d6c82d7b | 2313 | if (addr->transport->setup) |
929ba01c | 2314 | switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid, |
059ec3d9 PH |
2315 | &(addr->message))) |
2316 | { | |
2317 | case DEFER: | |
d6c82d7b JH |
2318 | addr->transport_return = DEFER; |
2319 | goto PASS_BACK; | |
059ec3d9 PH |
2320 | |
2321 | case FAIL: | |
d6c82d7b JH |
2322 | addr->transport_return = PANIC; |
2323 | goto PASS_BACK; | |
059ec3d9 | 2324 | } |
059ec3d9 PH |
2325 | |
2326 | /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as | |
2327 | when the process becomes unprivileged, it won't be able to write to the | |
2328 | process log. SIGHUP is ignored throughout exim, except when it is being | |
2329 | run as a daemon. */ | |
2330 | ||
2331 | signal(SIGINT, SIG_IGN); | |
2332 | signal(SIGTERM, SIG_IGN); | |
2333 | signal(SIGUSR1, SIG_IGN); | |
2334 | ||
2335 | /* Close the unwanted half of the pipe, and set close-on-exec for the other | |
2336 | half - for transports that exec things (e.g. pipe). Then set the required | |
2337 | gid/uid. */ | |
2338 | ||
f1e894f3 | 2339 | (void)close(pfd[pipe_read]); |
ff790e47 | 2340 | (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) | |
059ec3d9 PH |
2341 | FD_CLOEXEC); |
2342 | exim_setugid(uid, gid, use_initgroups, | |
2343 | string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part, | |
2344 | addr->address, addr->transport->name)); | |
2345 | ||
2346 | DEBUG(D_deliver) | |
2347 | { | |
059ec3d9 | 2348 | debug_printf(" home=%s current=%s\n", deliver_home, working_directory); |
d7978c0f | 2349 | for (address_item * batched = addr->next; batched; batched = batched->next) |
059ec3d9 PH |
2350 | debug_printf("additional batched address: %s\n", batched->address); |
2351 | } | |
2352 | ||
2353 | /* Set an appropriate working directory. */ | |
2354 | ||
2355 | if (Uchdir(working_directory) < 0) | |
2356 | { | |
2357 | addr->transport_return = DEFER; | |
2358 | addr->basic_errno = errno; | |
2359 | addr->message = string_sprintf("failed to chdir to %s", working_directory); | |
2360 | } | |
2361 | ||
2362 | /* If successful, call the transport */ | |
2363 | ||
2364 | else | |
2365 | { | |
2366 | BOOL ok = TRUE; | |
2367 | set_process_info("delivering %s to %s using %s", message_id, | |
2368 | addr->local_part, addr->transport->name); | |
2369 | ||
2a47f028 JH |
2370 | /* Setting this global in the subprocess means we need never clear it */ |
2371 | transport_name = addr->transport->name; | |
2372 | ||
059ec3d9 PH |
2373 | /* If a transport filter has been specified, set up its argument list. |
2374 | Any errors will get put into the address, and FALSE yielded. */ | |
2375 | ||
d6c82d7b | 2376 | if (addr->transport->filter_command) |
059ec3d9 PH |
2377 | { |
2378 | ok = transport_set_up_command(&transport_filter_argv, | |
2379 | addr->transport->filter_command, | |
2380 | TRUE, PANIC, addr, US"transport filter", NULL); | |
2381 | transport_filter_timeout = addr->transport->filter_timeout; | |
2382 | } | |
2383 | else transport_filter_argv = NULL; | |
2384 | ||
2385 | if (ok) | |
2386 | { | |
2387 | debug_print_string(addr->transport->debug_string); | |
2388 | replicate = !(addr->transport->info->code)(addr->transport, addr); | |
2389 | } | |
2390 | } | |
2391 | ||
2392 | /* Pass the results back down the pipe. If necessary, first replicate the | |
2393 | status in the top address to the others in the batch. The label is the | |
2394 | subject of a goto when a call to the transport's setup function fails. We | |
2395 | pass the pointer to the transport back in case it got changed as a result of | |
2396 | file_format in appendfile. */ | |
2397 | ||
2398 | PASS_BACK: | |
2399 | ||
2400 | if (replicate) replicate_status(addr); | |
d6c82d7b | 2401 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 PH |
2402 | { |
2403 | int i; | |
2404 | int local_part_length = Ustrlen(addr2->local_part); | |
2405 | uschar *s; | |
1ac6b2e7 | 2406 | int ret; |
059ec3d9 | 2407 | |
847a015a JH |
2408 | if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int) |
2409 | || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count) | |
2410 | || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags) | |
2411 | || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int) | |
2412 | || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int) | |
a55697ac | 2413 | || (ret = write(pfd[pipe_write], &addr2->delivery_time, sizeof(struct timeval))) != sizeof(struct timeval) |
847a015a JH |
2414 | || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int) |
2415 | || (ret = write(pfd[pipe_write], &addr2->transport, | |
1ac6b2e7 | 2416 | sizeof(transport_instance *))) != sizeof(transport_instance *) |
059ec3d9 PH |
2417 | |
2418 | /* For a file delivery, pass back the local part, in case the original | |
2419 | was only part of the final delivery path. This gives more complete | |
2420 | logging. */ | |
2421 | ||
1ac6b2e7 | 2422 | || (testflag(addr2, af_file) |
847a015a JH |
2423 | && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int) |
2424 | || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length | |
1ac6b2e7 JH |
2425 | ) |
2426 | ) | |
2427 | ) | |
a23ff3b4 | 2428 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
1ac6b2e7 | 2429 | ret == -1 ? strerror(errno) : "short write"); |
059ec3d9 PH |
2430 | |
2431 | /* Now any messages */ | |
2432 | ||
2433 | for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message) | |
2434 | { | |
d6c82d7b | 2435 | int message_length = s ? Ustrlen(s) + 1 : 0; |
847a015a JH |
2436 | if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int) |
2437 | || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length | |
1ac6b2e7 | 2438 | ) |
a23ff3b4 | 2439 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
1ac6b2e7 | 2440 | ret == -1 ? strerror(errno) : "short write"); |
059ec3d9 PH |
2441 | } |
2442 | } | |
2443 | ||
2444 | /* OK, this process is now done. Free any cached resources that it opened, | |
2445 | and close the pipe we were writing down before exiting. */ | |
2446 | ||
f1e894f3 | 2447 | (void)close(pfd[pipe_write]); |
059ec3d9 PH |
2448 | search_tidyup(); |
2449 | exit(EXIT_SUCCESS); | |
2450 | } | |
2451 | ||
2452 | /* Back in the main process: panic if the fork did not succeed. This seems | |
2453 | better than returning an error - if forking is failing it is probably best | |
2454 | not to try other deliveries for this message. */ | |
2455 | ||
2456 | if (pid < 0) | |
2457 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s", | |
2458 | addr->address); | |
2459 | ||
2460 | /* Read the pipe to get the delivery status codes and error messages. Our copy | |
2461 | of the writing end must be closed first, as otherwise read() won't return zero | |
2462 | on an empty pipe. We check that a status exists for each address before | |
2463 | overwriting the address structure. If data is missing, the default DEFER status | |
2464 | will remain. Afterwards, close the reading end. */ | |
2465 | ||
f1e894f3 | 2466 | (void)close(pfd[pipe_write]); |
059ec3d9 | 2467 | |
d6c82d7b | 2468 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 | 2469 | { |
847a015a | 2470 | if ((len = read(pfd[pipe_read], &status, sizeof(int))) > 0) |
059ec3d9 PH |
2471 | { |
2472 | int i; | |
2473 | uschar **sptr; | |
2474 | ||
2475 | addr2->transport_return = status; | |
847a015a | 2476 | len = read(pfd[pipe_read], &transport_count, |
059ec3d9 | 2477 | sizeof(transport_count)); |
847a015a JH |
2478 | len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags)); |
2479 | len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int)); | |
2480 | len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int)); | |
a55697ac | 2481 | len = read(pfd[pipe_read], &addr2->delivery_time, sizeof(struct timeval)); |
847a015a JH |
2482 | len = read(pfd[pipe_read], &addr2->special_action, sizeof(int)); |
2483 | len = read(pfd[pipe_read], &addr2->transport, | |
059ec3d9 PH |
2484 | sizeof(transport_instance *)); |
2485 | ||
2486 | if (testflag(addr2, af_file)) | |
2487 | { | |
d88f0784 | 2488 | int llen; |
847a015a | 2489 | if ( read(pfd[pipe_read], &llen, sizeof(int)) != sizeof(int) |
d88f0784 JH |
2490 | || llen > 64*4 /* limit from rfc 5821, times I18N factor */ |
2491 | ) | |
2492 | { | |
2493 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part length read" | |
2494 | " from delivery subprocess"); | |
2495 | break; | |
2496 | } | |
2497 | /* sanity-checked llen so disable the Coverity error */ | |
2498 | /* coverity[tainted_data] */ | |
847a015a | 2499 | if (read(pfd[pipe_read], big_buffer, llen) != llen) |
d88f0784 JH |
2500 | { |
2501 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part read" | |
2502 | " from delivery subprocess"); | |
2503 | break; | |
2504 | } | |
2505 | big_buffer[llen] = 0; | |
059ec3d9 PH |
2506 | addr2->local_part = string_copy(big_buffer); |
2507 | } | |
2508 | ||
d6c82d7b | 2509 | for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message) |
059ec3d9 PH |
2510 | { |
2511 | int message_length; | |
847a015a | 2512 | len = read(pfd[pipe_read], &message_length, sizeof(int)); |
059ec3d9 PH |
2513 | if (message_length > 0) |
2514 | { | |
847a015a | 2515 | len = read(pfd[pipe_read], big_buffer, message_length); |
dc8091e7 | 2516 | big_buffer[big_buffer_size-1] = '\0'; /* guard byte */ |
059ec3d9 PH |
2517 | if (len > 0) *sptr = string_copy(big_buffer); |
2518 | } | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | else | |
2523 | { | |
2524 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s " | |
2525 | "from delivery subprocess", addr2->unique); | |
2526 | break; | |
2527 | } | |
2528 | } | |
2529 | ||
f1e894f3 | 2530 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
2531 | |
2532 | /* Unless shadowing, write all successful addresses immediately to the journal | |
2533 | file, to ensure they are recorded asap. For homonymic addresses, use the base | |
2534 | address plus the transport name. Failure to write the journal is panic-worthy, | |
2535 | but don't stop, as it may prove possible subsequently to update the spool file | |
2536 | in order to record the delivery. */ | |
2537 | ||
2538 | if (!shadowing) | |
2539 | { | |
d6c82d7b JH |
2540 | for (addr2 = addr; addr2; addr2 = addr2->next) |
2541 | if (addr2->transport_return == OK) | |
2542 | { | |
2543 | if (testflag(addr2, af_homonym)) | |
2544 | sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name); | |
2545 | else | |
2546 | sprintf(CS big_buffer, "%.500s\n", addr2->unique); | |
059ec3d9 | 2547 | |
d6c82d7b JH |
2548 | /* In the test harness, wait just a bit to let the subprocess finish off |
2549 | any debug output etc first. */ | |
059ec3d9 | 2550 | |
9f01e50d | 2551 | testharness_pause_ms(300); |
059ec3d9 | 2552 | |
d6c82d7b JH |
2553 | DEBUG(D_deliver) debug_printf("journalling %s", big_buffer); |
2554 | len = Ustrlen(big_buffer); | |
2555 | if (write(journal_fd, big_buffer, len) != len) | |
2556 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s", | |
2557 | big_buffer, strerror(errno)); | |
2558 | } | |
059ec3d9 PH |
2559 | |
2560 | /* Ensure the journal file is pushed out to disk. */ | |
2561 | ||
54fc8428 | 2562 | if (EXIMfsync(journal_fd) < 0) |
059ec3d9 PH |
2563 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s", |
2564 | strerror(errno)); | |
2565 | } | |
2566 | ||
2567 | /* Wait for the process to finish. If it terminates with a non-zero code, | |
2568 | freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the | |
2569 | status values of all the addresses as they are. Take care to handle the case | |
2570 | when the subprocess doesn't seem to exist. This has been seen on one system | |
2571 | when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that | |
2572 | happens, wait() doesn't recognize the termination of child processes. Exim now | |
2573 | resets SIGCHLD to SIG_DFL, but this code should still be robust. */ | |
2574 | ||
2575 | while ((rc = wait(&status)) != pid) | |
059ec3d9 PH |
2576 | if (rc < 0 && errno == ECHILD) /* Process has vanished */ |
2577 | { | |
2578 | log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly", | |
2579 | addr->transport->driver_name); | |
2580 | status = 0; | |
2581 | break; | |
2582 | } | |
059ec3d9 PH |
2583 | |
2584 | if ((status & 0xffff) != 0) | |
2585 | { | |
2586 | int msb = (status >> 8) & 255; | |
2587 | int lsb = status & 255; | |
2588 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
2589 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
2590 | addr->special_action = SPECIAL_FREEZE; | |
2591 | log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero " | |
2592 | "status 0x%04x: %s %d", | |
2593 | addr->transport->driver_name, | |
2594 | status, | |
d6c82d7b | 2595 | msb == 0 ? "terminated by signal" : "exit code", |
059ec3d9 PH |
2596 | code); |
2597 | } | |
2598 | ||
2599 | /* If SPECIAL_WARN is set in the top address, send a warning message. */ | |
2600 | ||
d6c82d7b | 2601 | if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message) |
059ec3d9 PH |
2602 | { |
2603 | int fd; | |
2604 | uschar *warn_message; | |
d6c82d7b | 2605 | pid_t pid; |
059ec3d9 PH |
2606 | |
2607 | DEBUG(D_deliver) debug_printf("Warning message requested by transport\n"); | |
2608 | ||
d6c82d7b | 2609 | if (!(warn_message = expand_string(addr->transport->warn_message))) |
059ec3d9 PH |
2610 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning " |
2611 | "message for %s transport): %s", addr->transport->warn_message, | |
2612 | addr->transport->name, expand_string_message); | |
d6c82d7b JH |
2613 | |
2614 | else if ((pid = child_open_exim(&fd)) > 0) | |
059ec3d9 | 2615 | { |
d6c82d7b JH |
2616 | FILE *f = fdopen(fd, "wb"); |
2617 | if (errors_reply_to && !contains_header(US"Reply-To", warn_message)) | |
2618 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
2619 | fprintf(f, "Auto-Submitted: auto-replied\n"); | |
2620 | if (!contains_header(US"From", warn_message)) | |
2621 | moan_write_from(f); | |
2622 | fprintf(f, "%s", CS warn_message); | |
059ec3d9 | 2623 | |
d6c82d7b | 2624 | /* Close and wait for child process to complete, without a timeout. */ |
059ec3d9 | 2625 | |
d6c82d7b JH |
2626 | (void)fclose(f); |
2627 | (void)child_close(pid, 0); | |
059ec3d9 PH |
2628 | } |
2629 | ||
2630 | addr->special_action = SPECIAL_NONE; | |
2631 | } | |
2632 | } | |
2633 | ||
2634 | ||
2635 | ||
fa41615d | 2636 | |
3070ceee JH |
2637 | /* Check transport for the given concurrency limit. Return TRUE if over |
2638 | the limit (or an expansion failure), else FALSE and if there was a limit, | |
2639 | the key for the hints database used for the concurrency count. */ | |
fa41615d | 2640 | |
3070ceee JH |
2641 | static BOOL |
2642 | tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key) | |
fa41615d | 2643 | { |
3070ceee JH |
2644 | unsigned max_parallel; |
2645 | ||
2646 | if (!tp->max_parallel) return FALSE; | |
2647 | ||
2648 | max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE); | |
2649 | if (expand_string_message) | |
2650 | { | |
2651 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option " | |
2652 | "in %s transport (%s): %s", tp->name, addr->address, | |
2653 | expand_string_message); | |
2654 | return TRUE; | |
2655 | } | |
2656 | ||
2657 | if (max_parallel > 0) | |
2658 | { | |
2659 | uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name); | |
2660 | if (!enq_start(serialize_key, max_parallel)) | |
2661 | { | |
2662 | address_item * next; | |
2663 | DEBUG(D_transport) | |
2664 | debug_printf("skipping tpt %s because concurrency limit %u reached\n", | |
2665 | tp->name, max_parallel); | |
2666 | do | |
2667 | { | |
2668 | next = addr->next; | |
2669 | addr->message = US"concurrency limit reached for transport"; | |
2670 | addr->basic_errno = ERRNO_TRETRY; | |
ba936fb8 | 2671 | post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); |
3070ceee JH |
2672 | } while ((addr = next)); |
2673 | return TRUE; | |
2674 | } | |
2675 | *key = serialize_key; | |
2676 | } | |
2677 | return FALSE; | |
fa41615d JH |
2678 | } |
2679 | ||
2680 | ||
2681 | ||
059ec3d9 PH |
2682 | /************************************************* |
2683 | * Do local deliveries * | |
2684 | *************************************************/ | |
2685 | ||
2686 | /* This function processes the list of addresses in addr_local. True local | |
2687 | deliveries are always done one address at a time. However, local deliveries can | |
2688 | be batched up in some cases. Typically this is when writing batched SMTP output | |
2689 | files for use by some external transport mechanism, or when running local | |
2690 | deliveries over LMTP. | |
2691 | ||
2692 | Arguments: None | |
2693 | Returns: Nothing | |
2694 | */ | |
2695 | ||
2696 | static void | |
2697 | do_local_deliveries(void) | |
2698 | { | |
2699 | open_db dbblock; | |
2700 | open_db *dbm_file = NULL; | |
2701 | time_t now = time(NULL); | |
2702 | ||
2703 | /* Loop until we have exhausted the supply of local deliveries */ | |
2704 | ||
d6c82d7b | 2705 | while (addr_local) |
059ec3d9 | 2706 | { |
32dfdf8b JH |
2707 | struct timeval delivery_start; |
2708 | struct timeval deliver_time; | |
059ec3d9 PH |
2709 | address_item *addr2, *addr3, *nextaddr; |
2710 | int logflags = LOG_MAIN; | |
8768d548 | 2711 | int logchar = f.dont_deliver? '*' : '='; |
059ec3d9 | 2712 | transport_instance *tp; |
fa41615d | 2713 | uschar * serialize_key = NULL; |
059ec3d9 PH |
2714 | |
2715 | /* Pick the first undelivered address off the chain */ | |
2716 | ||
2717 | address_item *addr = addr_local; | |
2718 | addr_local = addr->next; | |
2719 | addr->next = NULL; | |
2720 | ||
2721 | DEBUG(D_deliver|D_transport) | |
2722 | debug_printf("--------> %s <--------\n", addr->address); | |
2723 | ||
2724 | /* An internal disaster if there is no transport. Should not occur! */ | |
2725 | ||
d6c82d7b | 2726 | if (!(tp = addr->transport)) |
059ec3d9 PH |
2727 | { |
2728 | logflags |= LOG_PANIC; | |
8768d548 | 2729 | f.disable_logging = FALSE; /* Jic */ |
d6c82d7b JH |
2730 | addr->message = addr->router |
2731 | ? string_sprintf("No transport set by %s router", addr->router->name) | |
f3ebb786 | 2732 | : US"No transport set by system filter"; |
ba936fb8 | 2733 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2734 | continue; |
2735 | } | |
2736 | ||
2737 | /* Check that this base address hasn't previously been delivered to this | |
2738 | transport. The check is necessary at this point to handle homonymic addresses | |
2739 | correctly in cases where the pattern of redirection changes between delivery | |
2740 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
2741 | time. */ | |
2742 | ||
c2c19e9d | 2743 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
2744 | |
2745 | /* There are weird cases where logging is disabled */ | |
2746 | ||
8768d548 | 2747 | f.disable_logging = tp->disable_logging; |
059ec3d9 | 2748 | |
f7fd3850 PH |
2749 | /* Check for batched addresses and possible amalgamation. Skip all the work |
2750 | if either batch_max <= 1 or there aren't any other addresses for local | |
2751 | delivery. */ | |
059ec3d9 | 2752 | |
d6c82d7b | 2753 | if (tp->batch_max > 1 && addr_local) |
059ec3d9 PH |
2754 | { |
2755 | int batch_count = 1; | |
2756 | BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain"); | |
d6c82d7b JH |
2757 | BOOL uses_lp = ( testflag(addr, af_pfr) |
2758 | && (testflag(addr, af_file) || addr->local_part[0] == '|') | |
2759 | ) | |
2760 | || readconf_depends((driver_instance *)tp, US"local_part"); | |
059ec3d9 PH |
2761 | uschar *batch_id = NULL; |
2762 | address_item **anchor = &addr_local; | |
2763 | address_item *last = addr; | |
2764 | address_item *next; | |
2765 | ||
2766 | /* Expand the batch_id string for comparison with other addresses. | |
2767 | Expansion failure suppresses batching. */ | |
2768 | ||
d6c82d7b | 2769 | if (tp->batch_id) |
059ec3d9 PH |
2770 | { |
2771 | deliver_set_expansions(addr); | |
2772 | batch_id = expand_string(tp->batch_id); | |
2773 | deliver_set_expansions(NULL); | |
d6c82d7b | 2774 | if (!batch_id) |
059ec3d9 PH |
2775 | { |
2776 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2777 | "in %s transport (%s): %s", tp->name, addr->address, | |
2778 | expand_string_message); | |
2779 | batch_count = tp->batch_max; | |
2780 | } | |
2781 | } | |
2782 | ||
2783 | /* Until we reach the batch_max limit, pick off addresses which have the | |
2784 | same characteristics. These are: | |
2785 | ||
2786 | same transport | |
7816e254 | 2787 | not previously delivered (see comment about 50 lines above) |
059ec3d9 | 2788 | same local part if the transport's configuration contains $local_part |
f7fd3850 | 2789 | or if this is a file or pipe delivery from a redirection |
059ec3d9 PH |
2790 | same domain if the transport's configuration contains $domain |
2791 | same errors address | |
2792 | same additional headers | |
2793 | same headers to be removed | |
2794 | same uid/gid for running the transport | |
2795 | same first host if a host list is set | |
2796 | */ | |
2797 | ||
d6c82d7b | 2798 | while ((next = *anchor) && batch_count < tp->batch_max) |
059ec3d9 PH |
2799 | { |
2800 | BOOL ok = | |
d6c82d7b JH |
2801 | tp == next->transport |
2802 | && !previously_transported(next, TRUE) | |
7eb0e5d2 JH |
2803 | && testflag(addr, af_pfr) == testflag(next, af_pfr) |
2804 | && testflag(addr, af_file) == testflag(next, af_file) | |
d6c82d7b JH |
2805 | && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0) |
2806 | && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0) | |
2807 | && same_strings(next->prop.errors_address, addr->prop.errors_address) | |
2808 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
2809 | && same_strings(next->prop.remove_headers, addr->prop.remove_headers) | |
2810 | && same_ugid(tp, addr, next) | |
2811 | && ( !addr->host_list && !next->host_list | |
2812 | || addr->host_list | |
2813 | && next->host_list | |
2814 | && Ustrcmp(addr->host_list->name, next->host_list->name) == 0 | |
2815 | ); | |
059ec3d9 PH |
2816 | |
2817 | /* If the transport has a batch_id setting, batch_id will be non-NULL | |
2818 | from the expansion outside the loop. Expand for this address and compare. | |
2819 | Expansion failure makes this address ineligible for batching. */ | |
2820 | ||
d6c82d7b | 2821 | if (ok && batch_id) |
059ec3d9 PH |
2822 | { |
2823 | uschar *bid; | |
2824 | address_item *save_nextnext = next->next; | |
2825 | next->next = NULL; /* Expansion for a single address */ | |
2826 | deliver_set_expansions(next); | |
2827 | next->next = save_nextnext; | |
2828 | bid = expand_string(tp->batch_id); | |
2829 | deliver_set_expansions(NULL); | |
d6c82d7b | 2830 | if (!bid) |
059ec3d9 PH |
2831 | { |
2832 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2833 | "in %s transport (%s): %s", tp->name, next->address, | |
2834 | expand_string_message); | |
2835 | ok = FALSE; | |
2836 | } | |
2837 | else ok = (Ustrcmp(batch_id, bid) == 0); | |
2838 | } | |
2839 | ||
2840 | /* Take address into batch if OK. */ | |
2841 | ||
2842 | if (ok) | |
2843 | { | |
2844 | *anchor = next->next; /* Include the address */ | |
2845 | next->next = NULL; | |
2846 | last->next = next; | |
2847 | last = next; | |
2848 | batch_count++; | |
2849 | } | |
fa41615d | 2850 | else anchor = &next->next; /* Skip the address */ |
059ec3d9 PH |
2851 | } |
2852 | } | |
2853 | ||
2854 | /* We now have one or more addresses that can be delivered in a batch. Check | |
2855 | whether the transport is prepared to accept a message of this size. If not, | |
2856 | fail them all forthwith. If the expansion fails, or does not yield an | |
2857 | integer, defer delivery. */ | |
2858 | ||
d6c82d7b | 2859 | if (tp->message_size_limit) |
059ec3d9 PH |
2860 | { |
2861 | int rc = check_message_size(tp, addr); | |
2862 | if (rc != OK) | |
2863 | { | |
2864 | replicate_status(addr); | |
d6c82d7b | 2865 | while (addr) |
059ec3d9 PH |
2866 | { |
2867 | addr2 = addr->next; | |
ba936fb8 | 2868 | post_process_one(addr, rc, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2869 | addr = addr2; |
2870 | } | |
2871 | continue; /* With next batch of addresses */ | |
2872 | } | |
2873 | } | |
2874 | ||
2875 | /* If we are not running the queue, or if forcing, all deliveries will be | |
2876 | attempted. Otherwise, we must respect the retry times for each address. Even | |
2877 | when not doing this, we need to set up the retry key string, and determine | |
2878 | whether a retry record exists, because after a successful delivery, a delete | |
2879 | retry item must be set up. Keep the retry database open only for the duration | |
2880 | of these checks, rather than for all local deliveries, because some local | |
2881 | deliveries (e.g. to pipes) can take a substantial time. */ | |
2882 | ||
b10c87b3 | 2883 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE, TRUE))) |
059ec3d9 PH |
2884 | { |
2885 | DEBUG(D_deliver|D_retry|D_hints_lookup) | |
2886 | debug_printf("no retry data available\n"); | |
2887 | } | |
2888 | ||
2889 | addr2 = addr; | |
2890 | addr3 = NULL; | |
d6c82d7b | 2891 | while (addr2) |
059ec3d9 PH |
2892 | { |
2893 | BOOL ok = TRUE; /* to deliver this address */ | |
2894 | uschar *retry_key; | |
2895 | ||
2896 | /* Set up the retry key to include the domain or not, and change its | |
2897 | leading character from "R" to "T". Must make a copy before doing this, | |
2898 | because the old key may be pointed to from a "delete" retry item after | |
2899 | a routing delay. */ | |
2900 | ||
2901 | retry_key = string_copy( | |
d6c82d7b | 2902 | tp->retry_use_local_part ? addr2->address_retry_key : |
059ec3d9 PH |
2903 | addr2->domain_retry_key); |
2904 | *retry_key = 'T'; | |
2905 | ||
2906 | /* Inspect the retry data. If there is no hints file, delivery happens. */ | |
2907 | ||
d6c82d7b | 2908 | if (dbm_file) |
059ec3d9 PH |
2909 | { |
2910 | dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key); | |
2911 | ||
2912 | /* If there is no retry record, delivery happens. If there is, | |
2913 | remember it exists so it can be deleted after a successful delivery. */ | |
2914 | ||
d6c82d7b | 2915 | if (retry_record) |
059ec3d9 PH |
2916 | { |
2917 | setflag(addr2, af_lt_retry_exists); | |
2918 | ||
2919 | /* A retry record exists for this address. If queue running and not | |
2920 | forcing, inspect its contents. If the record is too old, or if its | |
2921 | retry time has come, or if it has passed its cutoff time, delivery | |
2922 | will go ahead. */ | |
2923 | ||
2924 | DEBUG(D_retry) | |
2925 | { | |
ea49d0e1 PH |
2926 | debug_printf("retry record exists: age=%s ", |
2927 | readconf_printtime(now - retry_record->time_stamp)); | |
2928 | debug_printf("(max %s)\n", readconf_printtime(retry_data_expire)); | |
2929 | debug_printf(" time to retry = %s expired = %d\n", | |
2930 | readconf_printtime(retry_record->next_try - now), | |
2931 | retry_record->expired); | |
059ec3d9 PH |
2932 | } |
2933 | ||
8768d548 | 2934 | if (f.queue_running && !f.deliver_force) |
059ec3d9 | 2935 | { |
d6c82d7b JH |
2936 | ok = (now - retry_record->time_stamp > retry_data_expire) |
2937 | || (now >= retry_record->next_try) | |
2938 | || retry_record->expired; | |
059ec3d9 PH |
2939 | |
2940 | /* If we haven't reached the retry time, there is one more check | |
1ddeb334 | 2941 | to do, which is for the ultimate address timeout. */ |
059ec3d9 PH |
2942 | |
2943 | if (!ok) | |
ba9af0af TF |
2944 | ok = retry_ultimate_address_timeout(retry_key, addr2->domain, |
2945 | retry_record, now); | |
059ec3d9 PH |
2946 | } |
2947 | } | |
2948 | else DEBUG(D_retry) debug_printf("no retry record exists\n"); | |
2949 | } | |
2950 | ||
2951 | /* This address is to be delivered. Leave it on the chain. */ | |
2952 | ||
2953 | if (ok) | |
2954 | { | |
2955 | addr3 = addr2; | |
2956 | addr2 = addr2->next; | |
2957 | } | |
2958 | ||
2959 | /* This address is to be deferred. Take it out of the chain, and | |
2960 | post-process it as complete. Must take it out of the chain first, | |
2961 | because post processing puts it on another chain. */ | |
2962 | ||
2963 | else | |
2964 | { | |
2965 | address_item *this = addr2; | |
2966 | this->message = US"Retry time not yet reached"; | |
2967 | this->basic_errno = ERRNO_LRETRY; | |
d6c82d7b JH |
2968 | addr2 = addr3 ? (addr3->next = addr2->next) |
2969 | : (addr = addr2->next); | |
ba936fb8 | 2970 | post_process_one(this, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2971 | } |
2972 | } | |
2973 | ||
d6c82d7b | 2974 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
2975 | |
2976 | /* If there are no addresses left on the chain, they all deferred. Loop | |
2977 | for the next set of addresses. */ | |
2978 | ||
d6c82d7b | 2979 | if (!addr) continue; |
059ec3d9 | 2980 | |
fa41615d JH |
2981 | /* If the transport is limited for parallellism, enforce that here. |
2982 | We use a hints DB entry, incremented here and decremented after | |
2983 | the transport (and any shadow transport) completes. */ | |
2984 | ||
3070ceee | 2985 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
fa41615d | 2986 | { |
fa41615d JH |
2987 | if (expand_string_message) |
2988 | { | |
2989 | logflags |= LOG_PANIC; | |
3070ceee JH |
2990 | do |
2991 | { | |
2992 | addr = addr->next; | |
ba936fb8 | 2993 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
3070ceee | 2994 | } while ((addr = addr2)); |
fa41615d | 2995 | } |
3070ceee | 2996 | continue; /* Loop for the next set of addresses. */ |
fa41615d JH |
2997 | } |
2998 | ||
2999 | ||
059ec3d9 PH |
3000 | /* So, finally, we do have some addresses that can be passed to the |
3001 | transport. Before doing so, set up variables that are relevant to a | |
3002 | single delivery. */ | |
3003 | ||
3004 | deliver_set_expansions(addr); | |
32dfdf8b JH |
3005 | |
3006 | gettimeofday(&delivery_start, NULL); | |
059ec3d9 | 3007 | deliver_local(addr, FALSE); |
32dfdf8b | 3008 | timesince(&deliver_time, &delivery_start); |
059ec3d9 PH |
3009 | |
3010 | /* If a shadow transport (which must perforce be another local transport), is | |
3011 | defined, and its condition is met, we must pass the message to the shadow | |
3012 | too, but only those addresses that succeeded. We do this by making a new | |
3013 | chain of addresses - also to keep the original chain uncontaminated. We must | |
3014 | use a chain rather than doing it one by one, because the shadow transport may | |
3015 | batch. | |
3016 | ||
3017 | NOTE: if the condition fails because of a lookup defer, there is nothing we | |
3018 | can do! */ | |
3019 | ||
d6c82d7b JH |
3020 | if ( tp->shadow |
3021 | && ( !tp->shadow_condition | |
3022 | || expand_check_condition(tp->shadow_condition, tp->name, US"transport") | |
3023 | ) ) | |
059ec3d9 PH |
3024 | { |
3025 | transport_instance *stp; | |
3026 | address_item *shadow_addr = NULL; | |
3027 | address_item **last = &shadow_addr; | |
3028 | ||
d6c82d7b | 3029 | for (stp = transports; stp; stp = stp->next) |
059ec3d9 PH |
3030 | if (Ustrcmp(stp->name, tp->shadow) == 0) break; |
3031 | ||
d6c82d7b | 3032 | if (!stp) |
059ec3d9 PH |
3033 | log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ", |
3034 | tp->shadow); | |
3035 | ||
3036 | /* Pick off the addresses that have succeeded, and make clones. Put into | |
3037 | the shadow_message field a pointer to the shadow_message field of the real | |
3038 | address. */ | |
3039 | ||
d6c82d7b JH |
3040 | else for (addr2 = addr; addr2; addr2 = addr2->next) |
3041 | if (addr2->transport_return == OK) | |
3042 | { | |
f3ebb786 | 3043 | addr3 = store_get(sizeof(address_item), FALSE); |
d6c82d7b JH |
3044 | *addr3 = *addr2; |
3045 | addr3->next = NULL; | |
82f90600 | 3046 | addr3->shadow_message = US &addr2->shadow_message; |
d6c82d7b JH |
3047 | addr3->transport = stp; |
3048 | addr3->transport_return = DEFER; | |
3049 | addr3->return_filename = NULL; | |
3050 | addr3->return_file = -1; | |
3051 | *last = addr3; | |
82f90600 | 3052 | last = &addr3->next; |
d6c82d7b | 3053 | } |
059ec3d9 PH |
3054 | |
3055 | /* If we found any addresses to shadow, run the delivery, and stick any | |
3056 | message back into the shadow_message field in the original. */ | |
3057 | ||
d6c82d7b | 3058 | if (shadow_addr) |
059ec3d9 PH |
3059 | { |
3060 | int save_count = transport_count; | |
3061 | ||
3062 | DEBUG(D_deliver|D_transport) | |
3063 | debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3064 | deliver_local(shadow_addr, TRUE); | |
3065 | ||
d6c82d7b | 3066 | for(; shadow_addr; shadow_addr = shadow_addr->next) |
059ec3d9 PH |
3067 | { |
3068 | int sresult = shadow_addr->transport_return; | |
d6c82d7b JH |
3069 | *(uschar **)shadow_addr->shadow_message = |
3070 | sresult == OK | |
3071 | ? string_sprintf(" ST=%s", stp->name) | |
3072 | : string_sprintf(" ST=%s (%s%s%s)", stp->name, | |
3073 | shadow_addr->basic_errno <= 0 | |
3074 | ? US"" | |
3075 | : US strerror(shadow_addr->basic_errno), | |
3076 | shadow_addr->basic_errno <= 0 || !shadow_addr->message | |
3077 | ? US"" | |
3078 | : US": ", | |
3079 | shadow_addr->message | |
3080 | ? shadow_addr->message | |
3081 | : shadow_addr->basic_errno <= 0 | |
3082 | ? US"unknown error" | |
3083 | : US""); | |
059ec3d9 PH |
3084 | |
3085 | DEBUG(D_deliver|D_transport) | |
3086 | debug_printf("%s shadow transport returned %s for %s\n", | |
aeb65e91 | 3087 | stp->name, rc_to_string(sresult), shadow_addr->address); |
059ec3d9 PH |
3088 | } |
3089 | ||
3090 | DEBUG(D_deliver|D_transport) | |
3091 | debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3092 | ||
3093 | transport_count = save_count; /* Restore original transport count */ | |
3094 | } | |
3095 | } | |
3096 | ||
3097 | /* Cancel the expansions that were set up for the delivery. */ | |
3098 | ||
3099 | deliver_set_expansions(NULL); | |
3100 | ||
fa41615d JH |
3101 | /* If the transport was parallelism-limited, decrement the hints DB record. */ |
3102 | ||
3103 | if (serialize_key) enq_end(serialize_key); | |
3104 | ||
059ec3d9 PH |
3105 | /* Now we can process the results of the real transport. We must take each |
3106 | address off the chain first, because post_process_one() puts it on another | |
3107 | chain. */ | |
3108 | ||
d6c82d7b | 3109 | for (addr2 = addr; addr2; addr2 = nextaddr) |
059ec3d9 PH |
3110 | { |
3111 | int result = addr2->transport_return; | |
3112 | nextaddr = addr2->next; | |
3113 | ||
3114 | DEBUG(D_deliver|D_transport) | |
3115 | debug_printf("%s transport returned %s for %s\n", | |
aeb65e91 | 3116 | tp->name, rc_to_string(result), addr2->address); |
059ec3d9 PH |
3117 | |
3118 | /* If there is a retry_record, or if delivery is deferred, build a retry | |
3119 | item for setting a new retry time or deleting the old retry record from | |
3120 | the database. These items are handled all together after all addresses | |
3121 | have been handled (so the database is open just for a short time for | |
3122 | updating). */ | |
3123 | ||
3124 | if (result == DEFER || testflag(addr2, af_lt_retry_exists)) | |
3125 | { | |
d6c82d7b JH |
3126 | int flags = result == DEFER ? 0 : rf_delete; |
3127 | uschar *retry_key = string_copy(tp->retry_use_local_part | |
3128 | ? addr2->address_retry_key : addr2->domain_retry_key); | |
059ec3d9 PH |
3129 | *retry_key = 'T'; |
3130 | retry_add_item(addr2, retry_key, flags); | |
3131 | } | |
3132 | ||
3133 | /* Done with this address */ | |
3134 | ||
a55697ac | 3135 | addr2->delivery_time = deliver_time; |
ba936fb8 | 3136 | post_process_one(addr2, result, logflags, EXIM_DTYPE_TRANSPORT, logchar); |
059ec3d9 PH |
3137 | |
3138 | /* If a pipe delivery generated text to be sent back, the result may be | |
3139 | changed to FAIL, and we must copy this for subsequent addresses in the | |
3140 | batch. */ | |
3141 | ||
3142 | if (addr2->transport_return != result) | |
3143 | { | |
d6c82d7b | 3144 | for (addr3 = nextaddr; addr3; addr3 = addr3->next) |
059ec3d9 PH |
3145 | { |
3146 | addr3->transport_return = addr2->transport_return; | |
3147 | addr3->basic_errno = addr2->basic_errno; | |
3148 | addr3->message = addr2->message; | |
3149 | } | |
3150 | result = addr2->transport_return; | |
3151 | } | |
3152 | ||
3153 | /* Whether or not the result was changed to FAIL, we need to copy the | |
3154 | return_file value from the first address into all the addresses of the | |
3155 | batch, so they are all listed in the error message. */ | |
3156 | ||
3157 | addr2->return_file = addr->return_file; | |
3158 | ||
3159 | /* Change log character for recording successful deliveries. */ | |
3160 | ||
3161 | if (result == OK) logchar = '-'; | |
3162 | } | |
3163 | } /* Loop back for next batch of addresses */ | |
3164 | } | |
3165 | ||
3166 | ||
3167 | ||
3168 | ||
3169 | /************************************************* | |
3170 | * Sort remote deliveries * | |
3171 | *************************************************/ | |
3172 | ||
3173 | /* This function is called if remote_sort_domains is set. It arranges that the | |
3174 | chain of addresses for remote deliveries is ordered according to the strings | |
3175 | specified. Try to make this shuffling reasonably efficient by handling | |
3176 | sequences of addresses rather than just single ones. | |
3177 | ||
3178 | Arguments: None | |
3179 | Returns: Nothing | |
3180 | */ | |
3181 | ||
3182 | static void | |
3183 | sort_remote_deliveries(void) | |
3184 | { | |
3185 | int sep = 0; | |
3186 | address_item **aptr = &addr_remote; | |
55414b25 | 3187 | const uschar *listptr = remote_sort_domains; |
059ec3d9 PH |
3188 | uschar *pattern; |
3189 | uschar patbuf[256]; | |
3190 | ||
d6c82d7b JH |
3191 | while ( *aptr |
3192 | && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf))) | |
3193 | ) | |
059ec3d9 PH |
3194 | { |
3195 | address_item *moved = NULL; | |
3196 | address_item **bptr = &moved; | |
3197 | ||
d6c82d7b | 3198 | while (*aptr) |
059ec3d9 PH |
3199 | { |
3200 | address_item **next; | |
3201 | deliver_domain = (*aptr)->domain; /* set $domain */ | |
55414b25 | 3202 | if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
059ec3d9 PH |
3203 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK) |
3204 | { | |
d6c82d7b | 3205 | aptr = &(*aptr)->next; |
059ec3d9 PH |
3206 | continue; |
3207 | } | |
3208 | ||
d6c82d7b JH |
3209 | next = &(*aptr)->next; |
3210 | while ( *next | |
3211 | && (deliver_domain = (*next)->domain, /* Set $domain */ | |
55414b25 | 3212 | match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
d6c82d7b JH |
3213 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK |
3214 | ) | |
3215 | next = &(*next)->next; | |
059ec3d9 PH |
3216 | |
3217 | /* If the batch of non-matchers is at the end, add on any that were | |
3218 | extracted further up the chain, and end this iteration. Otherwise, | |
3219 | extract them from the chain and hang on the moved chain. */ | |
3220 | ||
d6c82d7b | 3221 | if (!*next) |
059ec3d9 PH |
3222 | { |
3223 | *next = moved; | |
3224 | break; | |
3225 | } | |
3226 | ||
3227 | *bptr = *aptr; | |
3228 | *aptr = *next; | |
3229 | *next = NULL; | |
3230 | bptr = next; | |
d6c82d7b | 3231 | aptr = &(*aptr)->next; |
059ec3d9 PH |
3232 | } |
3233 | ||
3234 | /* If the loop ended because the final address matched, *aptr will | |
3235 | be NULL. Add on to the end any extracted non-matching addresses. If | |
3236 | *aptr is not NULL, the loop ended via "break" when *next is null, that | |
3237 | is, there was a string of non-matching addresses at the end. In this | |
3238 | case the extracted addresses have already been added on the end. */ | |
3239 | ||
d6c82d7b | 3240 | if (!*aptr) *aptr = moved; |
059ec3d9 PH |
3241 | } |
3242 | ||
3243 | DEBUG(D_deliver) | |
3244 | { | |
059ec3d9 | 3245 | debug_printf("remote addresses after sorting:\n"); |
d7978c0f | 3246 | for (address_item * addr = addr_remote; addr; addr = addr->next) |
059ec3d9 PH |
3247 | debug_printf(" %s\n", addr->address); |
3248 | } | |
3249 | } | |
3250 | ||
3251 | ||
3252 | ||
3253 | /************************************************* | |
3254 | * Read from pipe for remote delivery subprocess * | |
3255 | *************************************************/ | |
3256 | ||
3257 | /* This function is called when the subprocess is complete, but can also be | |
3258 | called before it is complete, in order to empty a pipe that is full (to prevent | |
3259 | deadlock). It must therefore keep track of its progress in the parlist data | |
3260 | block. | |
3261 | ||
3262 | We read the pipe to get the delivery status codes and a possible error message | |
3263 | for each address, optionally preceded by unusability data for the hosts and | |
3264 | also by optional retry data. | |
3265 | ||
3266 | Read in large chunks into the big buffer and then scan through, interpreting | |
3267 | the data therein. In most cases, only a single read will be necessary. No | |
1c5466b9 PH |
3268 | individual item will ever be anywhere near 2500 bytes in length, so by ensuring |
3269 | that we read the next chunk when there is less than 2500 bytes left in the | |
3270 | non-final chunk, we can assume each item is complete in the buffer before | |
3271 | handling it. Each item is written using a single write(), which is atomic for | |
3272 | small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and | |
3273 | often bigger) so even if we are reading while the subprocess is still going, we | |
3274 | should never have only a partial item in the buffer. | |
059ec3d9 | 3275 | |
0768462d JH |
3276 | hs12: This assumption is not true anymore, since we get quite large items (certificate |
3277 | information and such). | |
2cee425a | 3278 | |
059ec3d9 PH |
3279 | Argument: |
3280 | poffset the offset of the parlist item | |
3281 | eop TRUE if the process has completed | |
3282 | ||
3283 | Returns: TRUE if the terminating 'Z' item has been read, | |
3284 | or there has been a disaster (i.e. no more data needed); | |
3285 | FALSE otherwise | |
3286 | */ | |
3287 | ||
3288 | static BOOL | |
3289 | par_read_pipe(int poffset, BOOL eop) | |
3290 | { | |
3291 | host_item *h; | |
3292 | pardata *p = parlist + poffset; | |
3293 | address_item *addrlist = p->addrlist; | |
3294 | address_item *addr = p->addr; | |
3295 | pid_t pid = p->pid; | |
3296 | int fd = p->fd; | |
2cee425a | 3297 | |
059ec3d9 PH |
3298 | uschar *msg = p->msg; |
3299 | BOOL done = p->done; | |
059ec3d9 PH |
3300 | |
3301 | /* Loop through all items, reading from the pipe when necessary. The pipe | |
2cee425a HSHR |
3302 | used to be non-blocking. But I do not see a reason for using non-blocking I/O |
3303 | here, as the preceding select() tells us, if data is available for reading. | |
3304 | ||
3305 | A read() on a "selected" handle should never block, but(!) it may return | |
3306 | less data then we expected. (The buffer size we pass to read() shouldn't be | |
3307 | understood as a "request", but as a "limit".) | |
3308 | ||
3309 | Each separate item is written to the pipe in a timely manner. But, especially for | |
3310 | larger items, the read(2) may already return partial data from the write(2). | |
3311 | ||
3312 | The write is atomic mostly (depending on the amount written), but atomic does | |
3313 | not imply "all or noting", it just is "not intermixed" with other writes on the | |
3314 | same channel (pipe). | |
6c454556 HSHR |
3315 | |
3316 | */ | |
059ec3d9 PH |
3317 | |
3318 | DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n", | |
2cee425a | 3319 | (int)p->pid, eop? "ended" : "not ended yet"); |
059ec3d9 PH |
3320 | |
3321 | while (!done) | |
3322 | { | |
3323 | retry_item *r, **rp; | |
2cee425a HSHR |
3324 | uschar pipeheader[PIPE_HEADER_SIZE+1]; |
3325 | uschar *id = &pipeheader[0]; | |
3326 | uschar *subid = &pipeheader[1]; | |
3327 | uschar *ptr = big_buffer; | |
3328 | size_t required = PIPE_HEADER_SIZE; /* first the pipehaeder, later the data */ | |
3329 | ssize_t got; | |
3330 | ||
7845dbb3 | 3331 | DEBUG(D_deliver) debug_printf( |
0d68983b | 3332 | "expect %lu bytes (pipeheader) from tpt process %d\n", (u_long)required, pid); |
2cee425a HSHR |
3333 | |
3334 | /* We require(!) all the PIPE_HEADER_SIZE bytes here, as we know, | |
3335 | they're written in a timely manner, so waiting for the write shouldn't hurt a lot. | |
3336 | If we get less, we can assume the subprocess do be done and do not expect any further | |
3337 | information from it. */ | |
7845dbb3 | 3338 | |
ee250936 | 3339 | if ((got = readn(fd, pipeheader, required)) != required) |
059ec3d9 | 3340 | { |
bb07bcd3 JH |
3341 | msg = string_sprintf("got " SSIZE_T_FMT " of %d bytes (pipeheader) " |
3342 | "from transport process %d for transport %s", | |
3343 | got, PIPE_HEADER_SIZE, pid, addr->transport->driver_name); | |
3344 | done = TRUE; | |
3345 | break; | |
059ec3d9 PH |
3346 | } |
3347 | ||
2cee425a HSHR |
3348 | pipeheader[PIPE_HEADER_SIZE] = '\0'; |
3349 | DEBUG(D_deliver) | |
7845dbb3 JH |
3350 | debug_printf("got %ld bytes (pipeheader) from transport process %d\n", |
3351 | (long) got, pid); | |
059ec3d9 | 3352 | |
2cee425a HSHR |
3353 | { |
3354 | /* If we can't decode the pipeheader, the subprocess seems to have a | |
3355 | problem, we do not expect any furher information from it. */ | |
3356 | char *endc; | |
7845dbb3 | 3357 | required = Ustrtol(pipeheader+2, &endc, 10); |
bd21a787 WB |
3358 | if (*endc) |
3359 | { | |
2cee425a HSHR |
3360 | msg = string_sprintf("failed to read pipe " |
3361 | "from transport process %d for transport %s: error decoding size from header", | |
3362 | pid, addr->transport->driver_name); | |
bd21a787 WB |
3363 | done = TRUE; |
3364 | break; | |
3365 | } | |
2cee425a | 3366 | } |
bd21a787 WB |
3367 | |
3368 | DEBUG(D_deliver) | |
7845dbb3 | 3369 | debug_printf("expect %lu bytes (pipedata) from transport process %d\n", |
0d68983b | 3370 | (u_long)required, pid); |
2c0f3ea1 | 3371 | |
2cee425a HSHR |
3372 | /* Same as above, the transport process will write the bytes announced |
3373 | in a timely manner, so we can just wait for the bytes, getting less than expected | |
3374 | is considered a problem of the subprocess, we do not expect anything else from it. */ | |
ee250936 | 3375 | if ((got = readn(fd, big_buffer, required)) != required) |
8fa0a4d4 | 3376 | { |
bb07bcd3 JH |
3377 | msg = string_sprintf("got only " SSIZE_T_FMT " of " SIZE_T_FMT |
3378 | " bytes (pipedata) from transport process %d for transport %s", | |
3379 | got, required, pid, addr->transport->driver_name); | |
3380 | done = TRUE; | |
3381 | break; | |
8fa0a4d4 | 3382 | } |
bd21a787 | 3383 | |
059ec3d9 PH |
3384 | /* Handle each possible type of item, assuming the complete item is |
3385 | available in store. */ | |
3386 | ||
2cee425a | 3387 | switch (*id) |
059ec3d9 PH |
3388 | { |
3389 | /* Host items exist only if any hosts were marked unusable. Match | |
3390 | up by checking the IP address. */ | |
3391 | ||
3392 | case 'H': | |
57cc2785 JH |
3393 | for (h = addrlist->host_list; h; h = h->next) |
3394 | { | |
3395 | if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue; | |
3396 | h->status = ptr[0]; | |
3397 | h->why = ptr[1]; | |
3398 | } | |
3399 | ptr += 2; | |
3400 | while (*ptr++); | |
3401 | break; | |
059ec3d9 PH |
3402 | |
3403 | /* Retry items are sent in a preceding R item for each address. This is | |
3404 | kept separate to keep each message short enough to guarantee it won't | |
3405 | be split in the pipe. Hopefully, in the majority of cases, there won't in | |
3406 | fact be any retry items at all. | |
3407 | ||
3408 | The complete set of retry items might include an item to delete a | |
3409 | routing retry if there was a previous routing delay. However, routing | |
3410 | retries are also used when a remote transport identifies an address error. | |
3411 | In that case, there may also be an "add" item for the same key. Arrange | |
3412 | that a "delete" item is dropped in favour of an "add" item. */ | |
3413 | ||
3414 | case 'R': | |
57cc2785 | 3415 | if (!addr) goto ADDR_MISMATCH; |
059ec3d9 | 3416 | |
57cc2785 JH |
3417 | DEBUG(D_deliver|D_retry) |
3418 | debug_printf("reading retry information for %s from subprocess\n", | |
3419 | ptr+1); | |
059ec3d9 | 3420 | |
57cc2785 | 3421 | /* Cut out any "delete" items on the list. */ |
059ec3d9 | 3422 | |
57cc2785 JH |
3423 | for (rp = &addr->retries; (r = *rp); rp = &r->next) |
3424 | if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */ | |
3425 | { | |
3426 | if (!(r->flags & rf_delete)) break; /* It was not "delete" */ | |
3427 | *rp = r->next; /* Excise a delete item */ | |
3428 | DEBUG(D_deliver|D_retry) | |
3429 | debug_printf(" existing delete item dropped\n"); | |
3430 | } | |
059ec3d9 | 3431 | |
57cc2785 JH |
3432 | /* We want to add a delete item only if there is no non-delete item; |
3433 | however we still have to step ptr through the data. */ | |
059ec3d9 | 3434 | |
57cc2785 JH |
3435 | if (!r || !(*ptr & rf_delete)) |
3436 | { | |
f3ebb786 | 3437 | r = store_get(sizeof(retry_item), FALSE); |
57cc2785 JH |
3438 | r->next = addr->retries; |
3439 | addr->retries = r; | |
3440 | r->flags = *ptr++; | |
3441 | r->key = string_copy(ptr); | |
3442 | while (*ptr++); | |
32dfdf8b | 3443 | memcpy(&r->basic_errno, ptr, sizeof(r->basic_errno)); |
57cc2785 | 3444 | ptr += sizeof(r->basic_errno); |
32dfdf8b | 3445 | memcpy(&r->more_errno, ptr, sizeof(r->more_errno)); |
57cc2785 JH |
3446 | ptr += sizeof(r->more_errno); |
3447 | r->message = *ptr ? string_copy(ptr) : NULL; | |
3448 | DEBUG(D_deliver|D_retry) debug_printf(" added %s item\n", | |
3449 | r->flags & rf_delete ? "delete" : "retry"); | |
3450 | } | |
059ec3d9 | 3451 | |
57cc2785 JH |
3452 | else |
3453 | { | |
3454 | DEBUG(D_deliver|D_retry) | |
3455 | debug_printf(" delete item not added: non-delete item exists\n"); | |
3456 | ptr++; | |
3457 | while(*ptr++); | |
3458 | ptr += sizeof(r->basic_errno) + sizeof(r->more_errno); | |
3459 | } | |
059ec3d9 | 3460 | |
57cc2785 JH |
3461 | while(*ptr++); |
3462 | break; | |
059ec3d9 PH |
3463 | |
3464 | /* Put the amount of data written into the parlist block */ | |
3465 | ||
3466 | case 'S': | |
57cc2785 JH |
3467 | memcpy(&(p->transport_count), ptr, sizeof(transport_count)); |
3468 | ptr += sizeof(transport_count); | |
3469 | break; | |
059ec3d9 PH |
3470 | |
3471 | /* Address items are in the order of items on the address chain. We | |
3472 | remember the current address value in case this function is called | |
3473 | several times to empty the pipe in stages. Information about delivery | |
3474 | over TLS is sent in a preceding X item for each address. We don't put | |
3475 | it in with the other info, in order to keep each message short enough to | |
3476 | guarantee it won't be split in the pipe. */ | |
3477 | ||
01603eec | 3478 | #ifndef DISABLE_TLS |
059ec3d9 | 3479 | case 'X': |
57cc2785 | 3480 | if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */ |
2cee425a | 3481 | switch (*subid) |
57cc2785 JH |
3482 | { |
3483 | case '1': | |
da40b1ec | 3484 | addr->tlsver = addr->cipher = addr->peerdn = NULL; |
9d1c15ef | 3485 | |
57cc2785 | 3486 | if (*ptr) |
da40b1ec | 3487 | { |
57cc2785 | 3488 | addr->cipher = string_copy(ptr); |
da40b1ec JH |
3489 | addr->tlsver = string_copyn(ptr, Ustrchr(ptr, ':') - ptr); |
3490 | } | |
57cc2785 JH |
3491 | while (*ptr++); |
3492 | if (*ptr) | |
3493 | addr->peerdn = string_copy(ptr); | |
3494 | break; | |
3495 | ||
3496 | case '2': | |
3497 | if (*ptr) | |
3498 | (void) tls_import_cert(ptr, &addr->peercert); | |
3499 | else | |
3500 | addr->peercert = NULL; | |
3501 | break; | |
3502 | ||
3503 | case '3': | |
3504 | if (*ptr) | |
3505 | (void) tls_import_cert(ptr, &addr->ourcert); | |
3506 | else | |
3507 | addr->ourcert = NULL; | |
3508 | break; | |
018058b2 | 3509 | |
a7538db1 | 3510 | # ifndef DISABLE_OCSP |
57cc2785 JH |
3511 | case '4': |
3512 | addr->ocsp = *ptr ? *ptr - '0' : OCSP_NOT_REQ; | |
3513 | break; | |
a7538db1 | 3514 | # endif |
57cc2785 JH |
3515 | } |
3516 | while (*ptr++); | |
3517 | break; | |
01603eec | 3518 | #endif /*DISABLE_TLS*/ |
059ec3d9 | 3519 | |
6f123593 | 3520 | case 'C': /* client authenticator information */ |
2cee425a | 3521 | switch (*subid) |
57cc2785 JH |
3522 | { |
3523 | case '1': addr->authenticator = *ptr ? string_copy(ptr) : NULL; break; | |
3524 | case '2': addr->auth_id = *ptr ? string_copy(ptr) : NULL; break; | |
3525 | case '3': addr->auth_sndr = *ptr ? string_copy(ptr) : NULL; break; | |
3526 | } | |
3527 | while (*ptr++); | |
3528 | break; | |
6f123593 | 3529 | |
8ccd00b1 | 3530 | #ifndef DISABLE_PRDR |
fd98a5c6 | 3531 | case 'P': |
7eb0e5d2 | 3532 | setflag(addr, af_prdr_used); |
57cc2785 | 3533 | break; |
fd98a5c6 JH |
3534 | #endif |
3535 | ||
7c576fca JH |
3536 | case 'L': |
3537 | switch (*subid) | |
3538 | { | |
81344b40 | 3539 | #ifndef DISABLE_PIPE_CONNECT |
ee8b8090 JH |
3540 | case 2: setflag(addr, af_early_pipe); /*FALLTHROUGH*/ |
3541 | #endif | |
7c576fca JH |
3542 | case 1: setflag(addr, af_pipelining); break; |
3543 | } | |
3544 | break; | |
3545 | ||
e0cc6cda | 3546 | case 'K': |
7eb0e5d2 | 3547 | setflag(addr, af_chunking_used); |
57cc2785 | 3548 | break; |
e0cc6cda | 3549 | |
a2673768 | 3550 | case 'T': |
1ccd5f67 JH |
3551 | setflag(addr, af_tcp_fastopen_conn); |
3552 | if (*subid > '0') setflag(addr, af_tcp_fastopen); | |
ee8b8090 | 3553 | if (*subid > '1') setflag(addr, af_tcp_fastopen_data); |
a2673768 JH |
3554 | break; |
3555 | ||
6c1c3d1d | 3556 | case 'D': |
57cc2785 JH |
3557 | if (!addr) goto ADDR_MISMATCH; |
3558 | memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware)); | |
3559 | ptr += sizeof(addr->dsn_aware); | |
3560 | DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware); | |
059ec3d9 | 3561 | break; |
059ec3d9 | 3562 | |
57cc2785 JH |
3563 | case 'A': |
3564 | if (!addr) | |
3565 | { | |
3566 | ADDR_MISMATCH: | |
3567 | msg = string_sprintf("address count mismatch for data read from pipe " | |
3568 | "for transport process %d for transport %s", pid, | |
3569 | addrlist->transport->driver_name); | |
3570 | done = TRUE; | |
e6d2a989 | 3571 | break; |
57cc2785 | 3572 | } |
e6d2a989 | 3573 | |
2cee425a | 3574 | switch (*subid) |
57cc2785 JH |
3575 | { |
3576 | #ifdef SUPPORT_SOCKS | |
3577 | case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/ | |
3578 | proxy_session = TRUE; /*XXX should this be cleared somewhere? */ | |
3579 | if (*ptr == 0) | |
3580 | ptr++; | |
3581 | else | |
3582 | { | |
3583 | proxy_local_address = string_copy(ptr); | |
3584 | while(*ptr++); | |
3585 | memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port)); | |
3586 | ptr += sizeof(proxy_local_port); | |
3587 | } | |
3588 | break; | |
3589 | #endif | |
059ec3d9 | 3590 | |
57cc2785 JH |
3591 | #ifdef EXPERIMENTAL_DSN_INFO |
3592 | case '1': /* must arrive before A0, and applies to that addr */ | |
3593 | /* Two strings: smtp_greeting and helo_response */ | |
3594 | addr->smtp_greeting = string_copy(ptr); | |
3595 | while(*ptr++); | |
3596 | addr->helo_response = string_copy(ptr); | |
3597 | while(*ptr++); | |
3598 | break; | |
3599 | #endif | |
3600 | ||
3601 | case '0': | |
3602 | DEBUG(D_deliver) debug_printf("A0 %s tret %d\n", addr->address, *ptr); | |
3603 | addr->transport_return = *ptr++; | |
3604 | addr->special_action = *ptr++; | |
32dfdf8b | 3605 | memcpy(&addr->basic_errno, ptr, sizeof(addr->basic_errno)); |
57cc2785 | 3606 | ptr += sizeof(addr->basic_errno); |
32dfdf8b | 3607 | memcpy(&addr->more_errno, ptr, sizeof(addr->more_errno)); |
57cc2785 | 3608 | ptr += sizeof(addr->more_errno); |
a55697ac JH |
3609 | memcpy(&addr->delivery_time, ptr, sizeof(addr->delivery_time)); |
3610 | ptr += sizeof(addr->delivery_time); | |
32dfdf8b | 3611 | memcpy(&addr->flags, ptr, sizeof(addr->flags)); |
57cc2785 JH |
3612 | ptr += sizeof(addr->flags); |
3613 | addr->message = *ptr ? string_copy(ptr) : NULL; | |
3614 | while(*ptr++); | |
3615 | addr->user_message = *ptr ? string_copy(ptr) : NULL; | |
3616 | while(*ptr++); | |
059ec3d9 | 3617 | |
57cc2785 | 3618 | /* Always two strings for host information, followed by the port number and DNSSEC mark */ |
895fbaf2 | 3619 | |
57cc2785 JH |
3620 | if (*ptr) |
3621 | { | |
f3ebb786 | 3622 | h = store_get(sizeof(host_item), FALSE); |
57cc2785 JH |
3623 | h->name = string_copy(ptr); |
3624 | while (*ptr++); | |
3625 | h->address = string_copy(ptr); | |
3626 | while(*ptr++); | |
3627 | memcpy(&h->port, ptr, sizeof(h->port)); | |
3628 | ptr += sizeof(h->port); | |
3629 | h->dnssec = *ptr == '2' ? DS_YES | |
3630 | : *ptr == '1' ? DS_NO | |
3631 | : DS_UNK; | |
3632 | ptr++; | |
3633 | addr->host_used = h; | |
3634 | } | |
3635 | else ptr++; | |
895fbaf2 | 3636 | |
57cc2785 | 3637 | /* Finished with this address */ |
895fbaf2 | 3638 | |
57cc2785 JH |
3639 | addr = addr->next; |
3640 | break; | |
3641 | } | |
3642 | break; | |
059ec3d9 | 3643 | |
aeaf5db3 JH |
3644 | /* Local interface address/port */ |
3645 | case 'I': | |
57cc2785 JH |
3646 | if (*ptr) sending_ip_address = string_copy(ptr); |
3647 | while (*ptr++) ; | |
3648 | if (*ptr) sending_port = atoi(CS ptr); | |
3649 | while (*ptr++) ; | |
3650 | break; | |
aeaf5db3 | 3651 | |
059ec3d9 PH |
3652 | /* Z marks the logical end of the data. It is followed by '0' if |
3653 | continue_transport was NULL at the end of transporting, otherwise '1'. | |
3654 | We need to know when it becomes NULL during a delivery down a passed SMTP | |
3655 | channel so that we don't try to pass anything more down it. Of course, for | |
3656 | most normal messages it will remain NULL all the time. */ | |
3657 | ||
3658 | case 'Z': | |
57cc2785 JH |
3659 | if (*ptr == '0') |
3660 | { | |
3661 | continue_transport = NULL; | |
3662 | continue_hostname = NULL; | |
3663 | } | |
3664 | done = TRUE; | |
3665 | DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr); | |
3666 | break; | |
059ec3d9 PH |
3667 | |
3668 | /* Anything else is a disaster. */ | |
3669 | ||
3670 | default: | |
57cc2785 JH |
3671 | msg = string_sprintf("malformed data (%d) read from pipe for transport " |
3672 | "process %d for transport %s", ptr[-1], pid, | |
3673 | addr->transport->driver_name); | |
3674 | done = TRUE; | |
3675 | break; | |
059ec3d9 PH |
3676 | } |
3677 | } | |
3678 | ||
3679 | /* The done flag is inspected externally, to determine whether or not to | |
3680 | call the function again when the process finishes. */ | |
3681 | ||
3682 | p->done = done; | |
3683 | ||
3684 | /* If the process hadn't finished, and we haven't seen the end of the data | |
2cee425a | 3685 | or if we suffered a disaster, update the rest of the state, and return FALSE to |
059ec3d9 PH |
3686 | indicate "not finished". */ |
3687 | ||
3688 | if (!eop && !done) | |
3689 | { | |
3690 | p->addr = addr; | |
3691 | p->msg = msg; | |
3692 | return FALSE; | |
3693 | } | |
3694 | ||
3695 | /* Close our end of the pipe, to prevent deadlock if the far end is still | |
3696 | pushing stuff into it. */ | |
3697 | ||
f1e894f3 | 3698 | (void)close(fd); |
059ec3d9 PH |
3699 | p->fd = -1; |
3700 | ||
3701 | /* If we have finished without error, but haven't had data for every address, | |
3702 | something is wrong. */ | |
3703 | ||
d6c82d7b | 3704 | if (!msg && addr) |
059ec3d9 PH |
3705 | msg = string_sprintf("insufficient address data read from pipe " |
3706 | "for transport process %d for transport %s", pid, | |
3707 | addr->transport->driver_name); | |
3708 | ||
3709 | /* If an error message is set, something has gone wrong in getting back | |
3710 | the delivery data. Put the message into each address and freeze it. */ | |
3711 | ||
d6c82d7b JH |
3712 | if (msg) |
3713 | for (addr = addrlist; addr; addr = addr->next) | |
059ec3d9 PH |
3714 | { |
3715 | addr->transport_return = DEFER; | |
3716 | addr->special_action = SPECIAL_FREEZE; | |
3717 | addr->message = msg; | |
2cee425a | 3718 | log_write(0, LOG_MAIN|LOG_PANIC, "Delivery status for %s: %s\n", addr->address, addr->message); |
059ec3d9 | 3719 | } |
059ec3d9 PH |
3720 | |
3721 | /* Return TRUE to indicate we have got all we need from this process, even | |
3722 | if it hasn't actually finished yet. */ | |
3723 | ||
3724 | return TRUE; | |
3725 | } | |
3726 | ||
3727 | ||
3728 | ||
3729 | /************************************************* | |
3730 | * Post-process a set of remote addresses * | |
3731 | *************************************************/ | |
3732 | ||
3733 | /* Do what has to be done immediately after a remote delivery for each set of | |
3734 | addresses, then re-write the spool if necessary. Note that post_process_one | |
3735 | puts the address on an appropriate queue; hence we must fish off the next | |
3736 | one first. This function is also called if there is a problem with setting | |
3737 | up a subprocess to do a remote delivery in parallel. In this case, the final | |
3738 | argument contains a message, and the action must be forced to DEFER. | |
3739 | ||
3740 | Argument: | |
3741 | addr pointer to chain of address items | |
3742 | logflags flags for logging | |
3743 | msg NULL for normal cases; -> error message for unexpected problems | |
3744 | fallback TRUE if processing fallback hosts | |
3745 | ||
3746 | Returns: nothing | |
3747 | */ | |
3748 | ||
3749 | static void | |
3750 | remote_post_process(address_item *addr, int logflags, uschar *msg, | |
3751 | BOOL fallback) | |
3752 | { | |
059ec3d9 PH |
3753 | /* If any host addresses were found to be unusable, add them to the unusable |
3754 | tree so that subsequent deliveries don't try them. */ | |
3755 | ||
d7978c0f | 3756 | for (host_item * h = addr->host_list; h; h = h->next) |
d6c82d7b JH |
3757 | if (h->address) |
3758 | if (h->status >= hstatus_unusable) tree_add_unusable(h); | |
059ec3d9 PH |
3759 | |
3760 | /* Now handle each address on the chain. The transport has placed '=' or '-' | |
3761 | into the special_action field for each successful delivery. */ | |
3762 | ||
d6c82d7b | 3763 | while (addr) |
059ec3d9 PH |
3764 | { |
3765 | address_item *next = addr->next; | |
3766 | ||
3767 | /* If msg == NULL (normal processing) and the result is DEFER and we are | |
3768 | processing the main hosts and there are fallback hosts available, put the | |
3769 | address on the list for fallback delivery. */ | |
3770 | ||
d6c82d7b JH |
3771 | if ( addr->transport_return == DEFER |
3772 | && addr->fallback_hosts | |
3773 | && !fallback | |
3774 | && !msg | |
3775 | ) | |
059ec3d9 PH |
3776 | { |
3777 | addr->host_list = addr->fallback_hosts; | |
3778 | addr->next = addr_fallback; | |
3779 | addr_fallback = addr; | |
3780 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address); | |
3781 | } | |
3782 | ||
3783 | /* If msg is set (=> unexpected problem), set it in the address before | |
3784 | doing the ordinary post processing. */ | |
3785 | ||
3786 | else | |
3787 | { | |
d6c82d7b | 3788 | if (msg) |
059ec3d9 PH |
3789 | { |
3790 | addr->message = msg; | |
3791 | addr->transport_return = DEFER; | |
3792 | } | |
3793 | (void)post_process_one(addr, addr->transport_return, logflags, | |
ba936fb8 | 3794 | EXIM_DTYPE_TRANSPORT, addr->special_action); |
059ec3d9 PH |
3795 | } |
3796 | ||
3797 | /* Next address */ | |
3798 | ||
3799 | addr = next; | |
3800 | } | |
3801 | ||
3802 | /* If we have just delivered down a passed SMTP channel, and that was | |
3803 | the last address, the channel will have been closed down. Now that | |
3804 | we have logged that delivery, set continue_sequence to 1 so that | |
3805 | any subsequent deliveries don't get "*" incorrectly logged. */ | |
3806 | ||
d6c82d7b | 3807 | if (!continue_transport) continue_sequence = 1; |
059ec3d9 PH |
3808 | } |
3809 | ||
3810 | ||
3811 | ||
3812 | /************************************************* | |
3813 | * Wait for one remote delivery subprocess * | |
3814 | *************************************************/ | |
3815 | ||
3816 | /* This function is called while doing remote deliveries when either the | |
3817 | maximum number of processes exist and we need one to complete so that another | |
3818 | can be created, or when waiting for the last ones to complete. It must wait for | |
3819 | the completion of one subprocess, empty the control block slot, and return a | |
3820 | pointer to the address chain. | |
3821 | ||
3822 | Arguments: none | |
3823 | Returns: pointer to the chain of addresses handled by the process; | |
3824 | NULL if no subprocess found - this is an unexpected error | |
3825 | */ | |
3826 | ||
3827 | static address_item * | |
3828 | par_wait(void) | |
3829 | { | |
3830 | int poffset, status; | |
3831 | address_item *addr, *addrlist; | |
3832 | pid_t pid; | |
3833 | ||
3834 | set_process_info("delivering %s: waiting for a remote delivery subprocess " | |
3835 | "to finish", message_id); | |
3836 | ||
3837 | /* Loop until either a subprocess completes, or there are no subprocesses in | |
3838 | existence - in which case give an error return. We cannot proceed just by | |
3839 | waiting for a completion, because a subprocess may have filled up its pipe, and | |
3840 | be waiting for it to be emptied. Therefore, if no processes have finished, we | |
3841 | wait for one of the pipes to acquire some data by calling select(), with a | |
3842 | timeout just in case. | |
3843 | ||
3844 | The simple approach is just to iterate after reading data from a ready pipe. | |
3845 | This leads to non-ideal behaviour when the subprocess has written its final Z | |
3846 | item, closed the pipe, and is in the process of exiting (the common case). A | |
3847 | call to waitpid() yields nothing completed, but select() shows the pipe ready - | |
3848 | reading it yields EOF, so you end up with busy-waiting until the subprocess has | |
3849 | actually finished. | |
3850 | ||
3851 | To avoid this, if all the data that is needed has been read from a subprocess | |
3852 | after select(), an explicit wait() for it is done. We know that all it is doing | |
3853 | is writing to the pipe and then exiting, so the wait should not be long. | |
3854 | ||
3855 | The non-blocking waitpid() is to some extent just insurance; if we could | |
3856 | reliably detect end-of-file on the pipe, we could always know when to do a | |
3857 | blocking wait() for a completed process. However, because some systems use | |
3858 | NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to | |
3859 | use code that functions without the need to recognize EOF. | |
3860 | ||
3861 | There's a double loop here just in case we end up with a process that is not in | |
3862 | the list of remote delivery processes. Something has obviously gone wrong if | |
3863 | this is the case. (For example, a process that is incorrectly left over from | |
3864 | routing or local deliveries might be found.) The damage can be minimized by | |
3865 | looping back and looking for another process. If there aren't any, the error | |
3866 | return will happen. */ | |
3867 | ||
3868 | for (;;) /* Normally we do not repeat this loop */ | |
3869 | { | |
3870 | while ((pid = waitpid(-1, &status, WNOHANG)) <= 0) | |
3871 | { | |
3872 | struct timeval tv; | |
3873 | fd_set select_pipes; | |
3874 | int maxpipe, readycount; | |
3875 | ||
3876 | /* A return value of -1 can mean several things. If errno != ECHILD, it | |
3877 | either means invalid options (which we discount), or that this process was | |
3878 | interrupted by a signal. Just loop to try the waitpid() again. | |
3879 | ||
3880 | If errno == ECHILD, waitpid() is telling us that there are no subprocesses | |
3881 | in existence. This should never happen, and is an unexpected error. | |
3882 | However, there is a nasty complication when running under Linux. If "strace | |
3883 | -f" is being used under Linux to trace this process and its children, | |
3884 | subprocesses are "stolen" from their parents and become the children of the | |
3885 | tracing process. A general wait such as the one we've just obeyed returns | |
3886 | as if there are no children while subprocesses are running. Once a | |
3887 | subprocess completes, it is restored to the parent, and waitpid(-1) finds | |
3888 | it. Thanks to Joachim Wieland for finding all this out and suggesting a | |
3889 | palliative. | |
3890 | ||
3891 | This does not happen using "truss" on Solaris, nor (I think) with other | |
3892 | tracing facilities on other OS. It seems to be specific to Linux. | |
3893 | ||
3894 | What we do to get round this is to use kill() to see if any of our | |
3895 | subprocesses are still in existence. If kill() gives an OK return, we know | |
3896 | it must be for one of our processes - it can't be for a re-use of the pid, | |
3897 | because if our process had finished, waitpid() would have found it. If any | |
3898 | of our subprocesses are in existence, we proceed to use select() as if | |
3899 | waitpid() had returned zero. I think this is safe. */ | |
3900 | ||
3901 | if (pid < 0) | |
3902 | { | |
3903 | if (errno != ECHILD) continue; /* Repeats the waitpid() */ | |
3904 | ||
3905 | DEBUG(D_deliver) | |
3906 | debug_printf("waitpid() returned -1/ECHILD: checking explicitly " | |
3907 | "for process existence\n"); | |
3908 | ||
3909 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3910 | { | |
3911 | if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0) | |
3912 | { | |
3913 | DEBUG(D_deliver) debug_printf("process %d still exists: assume " | |
3914 | "stolen by strace\n", (int)pid); | |
3915 | break; /* With poffset set */ | |
3916 | } | |
3917 | } | |
3918 | ||
3919 | if (poffset >= remote_max_parallel) | |
3920 | { | |
3921 | DEBUG(D_deliver) debug_printf("*** no delivery children found\n"); | |
3922 | return NULL; /* This is the error return */ | |
3923 | } | |
3924 | } | |
3925 | ||
3926 | /* A pid value greater than 0 breaks the "while" loop. A negative value has | |
3927 | been handled above. A return value of zero means that there is at least one | |
3928 | subprocess, but there are no completed subprocesses. See if any pipes are | |
3929 | ready with any data for reading. */ | |
3930 | ||
3931 | DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n"); | |
3932 | ||
3933 | maxpipe = 0; | |
3934 | FD_ZERO(&select_pipes); | |
3935 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
059ec3d9 PH |
3936 | if (parlist[poffset].pid != 0) |
3937 | { | |
3938 | int fd = parlist[poffset].fd; | |
3939 | FD_SET(fd, &select_pipes); | |
3940 | if (fd > maxpipe) maxpipe = fd; | |
3941 | } | |
059ec3d9 PH |
3942 | |
3943 | /* Stick in a 60-second timeout, just in case. */ | |
3944 | ||
3945 | tv.tv_sec = 60; | |
3946 | tv.tv_usec = 0; | |
3947 | ||
3948 | readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes, | |
3949 | NULL, NULL, &tv); | |
3950 | ||
3951 | /* Scan through the pipes and read any that are ready; use the count | |
3952 | returned by select() to stop when there are no more. Select() can return | |
3953 | with no processes (e.g. if interrupted). This shouldn't matter. | |
3954 | ||
3955 | If par_read_pipe() returns TRUE, it means that either the terminating Z was | |
3956 | read, or there was a disaster. In either case, we are finished with this | |
3957 | process. Do an explicit wait() for the process and break the main loop if | |
3958 | it succeeds. | |
3959 | ||
3960 | It turns out that we have to deal with the case of an interrupted system | |
3961 | call, which can happen on some operating systems if the signal handling is | |
3962 | set up to do that by default. */ | |
3963 | ||
3964 | for (poffset = 0; | |
3965 | readycount > 0 && poffset < remote_max_parallel; | |
3966 | poffset++) | |
3967 | { | |
d6c82d7b JH |
3968 | if ( (pid = parlist[poffset].pid) != 0 |
3969 | && FD_ISSET(parlist[poffset].fd, &select_pipes) | |
3970 | ) | |
059ec3d9 PH |
3971 | { |
3972 | readycount--; | |
3973 | if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */ | |
059ec3d9 PH |
3974 | for (;;) /* Loop for signals */ |
3975 | { | |
3976 | pid_t endedpid = waitpid(pid, &status, 0); | |
3977 | if (endedpid == pid) goto PROCESS_DONE; | |
3978 | if (endedpid != (pid_t)(-1) || errno != EINTR) | |
3979 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return " | |
3980 | "%d (errno = %d) from waitpid() for process %d", | |
3981 | (int)endedpid, errno, (int)pid); | |
3982 | } | |
059ec3d9 PH |
3983 | } |
3984 | } | |
3985 | ||
3986 | /* Now go back and look for a completed subprocess again. */ | |
3987 | } | |
3988 | ||
3989 | /* A completed process was detected by the non-blocking waitpid(). Find the | |
3990 | data block that corresponds to this subprocess. */ | |
3991 | ||
3992 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3993 | if (pid == parlist[poffset].pid) break; | |
3994 | ||
3995 | /* Found the data block; this is a known remote delivery process. We don't | |
3996 | need to repeat the outer loop. This should be what normally happens. */ | |
3997 | ||
3998 | if (poffset < remote_max_parallel) break; | |
3999 | ||
4000 | /* This situation is an error, but it's probably better to carry on looking | |
4001 | for another process than to give up (as we used to do). */ | |
4002 | ||
4003 | log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote " | |
4004 | "transport process list", pid); | |
4005 | } /* End of the "for" loop */ | |
4006 | ||
4007 | /* Come here when all the data was completely read after a select(), and | |
4008 | the process in pid has been wait()ed for. */ | |
4009 | ||
4010 | PROCESS_DONE: | |
4011 | ||
4012 | DEBUG(D_deliver) | |
4013 | { | |
4014 | if (status == 0) | |
4015 | debug_printf("remote delivery process %d ended\n", (int)pid); | |
4016 | else | |
4017 | debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid, | |
4018 | status); | |
4019 | } | |
4020 | ||
4021 | set_process_info("delivering %s", message_id); | |
4022 | ||
4023 | /* Get the chain of processed addresses */ | |
4024 | ||
4025 | addrlist = parlist[poffset].addrlist; | |
4026 | ||
4027 | /* If the process did not finish cleanly, record an error and freeze (except | |
4028 | for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed, | |
4029 | in case the delivery did actually happen. */ | |
4030 | ||
4031 | if ((status & 0xffff) != 0) | |
4032 | { | |
4033 | uschar *msg; | |
4034 | int msb = (status >> 8) & 255; | |
4035 | int lsb = status & 255; | |
4036 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
4037 | ||
4038 | msg = string_sprintf("%s transport process returned non-zero status 0x%04x: " | |
4039 | "%s %d", | |
4040 | addrlist->transport->driver_name, | |
4041 | status, | |
4042 | (msb == 0)? "terminated by signal" : "exit code", | |
4043 | code); | |
4044 | ||
4045 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
4046 | addrlist->special_action = SPECIAL_FREEZE; | |
4047 | ||
d6c82d7b | 4048 | for (addr = addrlist; addr; addr = addr->next) |
059ec3d9 PH |
4049 | { |
4050 | addr->transport_return = DEFER; | |
4051 | addr->message = msg; | |
4052 | } | |
4053 | ||
4054 | remove_journal = FALSE; | |
4055 | } | |
4056 | ||
4057 | /* Else complete reading the pipe to get the result of the delivery, if all | |
4058 | the data has not yet been obtained. */ | |
4059 | ||
4060 | else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE); | |
4061 | ||
4062 | /* Put the data count and return path into globals, mark the data slot unused, | |
4063 | decrement the count of subprocesses, and return the address chain. */ | |
4064 | ||
4065 | transport_count = parlist[poffset].transport_count; | |
4066 | used_return_path = parlist[poffset].return_path; | |
4067 | parlist[poffset].pid = 0; | |
4068 | parcount--; | |
4069 | return addrlist; | |
4070 | } | |
4071 | ||
4072 | ||
4073 | ||
4074 | /************************************************* | |
4075 | * Wait for subprocesses and post-process * | |
4076 | *************************************************/ | |
4077 | ||
4078 | /* This function waits for subprocesses until the number that are still running | |
4079 | is below a given threshold. For each complete subprocess, the addresses are | |
4080 | post-processed. If we can't find a running process, there is some shambles. | |
4081 | Better not bomb out, as that might lead to multiple copies of the message. Just | |
4082 | log and proceed as if all done. | |
4083 | ||
4084 | Arguments: | |
4085 | max maximum number of subprocesses to leave running | |
4086 | fallback TRUE if processing fallback hosts | |
4087 | ||
4088 | Returns: nothing | |
4089 | */ | |
4090 | ||
4091 | static void | |
4092 | par_reduce(int max, BOOL fallback) | |
4093 | { | |
4094 | while (parcount > max) | |
4095 | { | |
4096 | address_item *doneaddr = par_wait(); | |
d6c82d7b | 4097 | if (!doneaddr) |
059ec3d9 PH |
4098 | { |
4099 | log_write(0, LOG_MAIN|LOG_PANIC, | |
4100 | "remote delivery process count got out of step"); | |
4101 | parcount = 0; | |
4102 | } | |
fa41615d JH |
4103 | else |
4104 | { | |
4105 | transport_instance * tp = doneaddr->transport; | |
4106 | if (tp->max_parallel) | |
4107 | enq_end(string_sprintf("tpt-serialize-%s", tp->name)); | |
4108 | ||
4109 | remote_post_process(doneaddr, LOG_MAIN, NULL, fallback); | |
4110 | } | |
059ec3d9 PH |
4111 | } |
4112 | } | |
4113 | ||
1ac6b2e7 | 4114 | static void |
2cee425a | 4115 | rmt_dlv_checked_write(int fd, char id, char subid, void * buf, ssize_t size) |
1ac6b2e7 | 4116 | { |
6c454556 HSHR |
4117 | uschar pipe_header[PIPE_HEADER_SIZE+1]; |
4118 | size_t total_len = PIPE_HEADER_SIZE + size; | |
4119 | ||
4120 | struct iovec iov[2] = { | |
4121 | { pipe_header, PIPE_HEADER_SIZE }, /* indication about the data to expect */ | |
4122 | { buf, size } /* *the* data */ | |
4123 | }; | |
4124 | ||
2cee425a | 4125 | ssize_t ret; |
bd21a787 WB |
4126 | |
4127 | /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */ | |
4128 | /* complain to log if someone tries with buffer sizes we can't handle*/ | |
4129 | ||
6c454556 | 4130 | if (size > BIG_BUFFER_SIZE-1) |
d6c82d7b | 4131 | { |
94431adb | 4132 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
6c454556 HSHR |
4133 | "Failed writing transport result to pipe: can't handle buffers > %d bytes. truncating!\n", |
4134 | BIG_BUFFER_SIZE-1); | |
4135 | size = BIG_BUFFER_SIZE; | |
d6c82d7b | 4136 | } |
bd21a787 | 4137 | |
7845dbb3 | 4138 | /* Should we check that we do not write more than PIPE_BUF? What would |
6c454556 | 4139 | that help? */ |
bd21a787 WB |
4140 | |
4141 | /* convert size to human readable string prepended by id and subid */ | |
7845dbb3 JH |
4142 | if (PIPE_HEADER_SIZE != snprintf(CS pipe_header, PIPE_HEADER_SIZE+1, "%c%c%05ld", |
4143 | id, subid, (long)size)) | |
bd21a787 | 4144 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n"); |
bd21a787 | 4145 | |
7845dbb3 JH |
4146 | DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%ld,final:%s\n", |
4147 | id, subid, (long)size, pipe_header); | |
bd21a787 | 4148 | |
847a015a | 4149 | if ((ret = writev(fd, iov, 2)) != total_len) |
2791749f JH |
4150 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
4151 | "Failed writing transport result to pipe (%ld of %ld bytes): %s", | |
4152 | (long)ret, (long)total_len, ret == -1 ? strerror(errno) : "short write"); | |
1ac6b2e7 JH |
4153 | } |
4154 | ||
059ec3d9 PH |
4155 | /************************************************* |
4156 | * Do remote deliveries * | |
4157 | *************************************************/ | |
4158 | ||
4159 | /* This function is called to process the addresses in addr_remote. We must | |
4160 | pick off the queue all addresses that have the same transport, remote | |
4161 | destination, and errors address, and hand them to the transport in one go, | |
4162 | subject to some configured limitations. If this is a run to continue delivering | |
4163 | to an existing delivery channel, skip all but those addresses that can go to | |
4164 | that channel. The skipped addresses just get deferred. | |
4165 | ||
4166 | If mua_wrapper is set, all addresses must be able to be sent in a single | |
4167 | transaction. If not, this function yields FALSE. | |
4168 | ||
4169 | In Exim 4, remote deliveries are always done in separate processes, even | |
4170 | if remote_max_parallel = 1 or if there's only one delivery to do. The reason | |
4171 | is so that the base process can retain privilege. This makes the | |
4172 | implementation of fallback transports feasible (though not initially done.) | |
4173 | ||
4174 | We create up to the configured number of subprocesses, each of which passes | |
4175 | back the delivery state via a pipe. (However, when sending down an existing | |
4176 | connection, remote_max_parallel is forced to 1.) | |
4177 | ||
4178 | Arguments: | |
4179 | fallback TRUE if processing fallback hosts | |
4180 | ||
4181 | Returns: TRUE normally | |
4182 | FALSE if mua_wrapper is set and the addresses cannot all be sent | |
4183 | in one transaction | |
4184 | */ | |
4185 | ||
4186 | static BOOL | |
4187 | do_remote_deliveries(BOOL fallback) | |
4188 | { | |
4189 | int parmax; | |
059ec3d9 PH |
4190 | int poffset; |
4191 | ||
4192 | parcount = 0; /* Number of executing subprocesses */ | |
4193 | ||
4194 | /* When sending down an existing channel, only do one delivery at a time. | |
4195 | We use a local variable (parmax) to hold the maximum number of processes; | |
4196 | this gets reduced from remote_max_parallel if we can't create enough pipes. */ | |
4197 | ||
d6c82d7b | 4198 | if (continue_transport) remote_max_parallel = 1; |
059ec3d9 PH |
4199 | parmax = remote_max_parallel; |
4200 | ||
4201 | /* If the data for keeping a list of processes hasn't yet been | |
4202 | set up, do so. */ | |
4203 | ||
d6c82d7b | 4204 | if (!parlist) |
059ec3d9 | 4205 | { |
f3ebb786 | 4206 | parlist = store_get(remote_max_parallel * sizeof(pardata), FALSE); |
059ec3d9 PH |
4207 | for (poffset = 0; poffset < remote_max_parallel; poffset++) |
4208 | parlist[poffset].pid = 0; | |
4209 | } | |
4210 | ||
4211 | /* Now loop for each remote delivery */ | |
4212 | ||
d7978c0f | 4213 | for (int delivery_count = 0; addr_remote; delivery_count++) |
059ec3d9 PH |
4214 | { |
4215 | pid_t pid; | |
4216 | uid_t uid; | |
4217 | gid_t gid; | |
4218 | int pfd[2]; | |
4219 | int address_count = 1; | |
4220 | int address_count_max; | |
4221 | BOOL multi_domain; | |
4222 | BOOL use_initgroups; | |
4223 | BOOL pipe_done = FALSE; | |
4224 | transport_instance *tp; | |
4225 | address_item **anchor = &addr_remote; | |
4226 | address_item *addr = addr_remote; | |
4227 | address_item *last = addr; | |
4228 | address_item *next; | |
d6c82d7b | 4229 | uschar * panicmsg; |
fa41615d | 4230 | uschar * serialize_key = NULL; |
059ec3d9 PH |
4231 | |
4232 | /* Pull the first address right off the list. */ | |
4233 | ||
4234 | addr_remote = addr->next; | |
4235 | addr->next = NULL; | |
4236 | ||
4237 | DEBUG(D_deliver|D_transport) | |
4238 | debug_printf("--------> %s <--------\n", addr->address); | |
4239 | ||
4240 | /* If no transport has been set, there has been a big screw-up somewhere. */ | |
4241 | ||
d6c82d7b | 4242 | if (!(tp = addr->transport)) |
059ec3d9 | 4243 | { |
8768d548 | 4244 | f.disable_logging = FALSE; /* Jic */ |
d6c82d7b JH |
4245 | panicmsg = US"No transport set by router"; |
4246 | goto panic_continue; | |
059ec3d9 PH |
4247 | } |
4248 | ||
4249 | /* Check that this base address hasn't previously been delivered to this | |
4250 | transport. The check is necessary at this point to handle homonymic addresses | |
4251 | correctly in cases where the pattern of redirection changes between delivery | |
4252 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
4253 | time. */ | |
4254 | ||
c2c19e9d | 4255 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
4256 | |
4257 | /* Force failure if the message is too big. */ | |
4258 | ||
d6c82d7b | 4259 | if (tp->message_size_limit) |
059ec3d9 PH |
4260 | { |
4261 | int rc = check_message_size(tp, addr); | |
4262 | if (rc != OK) | |
4263 | { | |
4264 | addr->transport_return = rc; | |
4265 | remote_post_process(addr, LOG_MAIN, NULL, fallback); | |
4266 | continue; | |
4267 | } | |
4268 | } | |
4269 | ||
4270 | /* Get the flag which specifies whether the transport can handle different | |
506900af JH |
4271 | domains that nevertheless resolve to the same set of hosts. If it needs |
4272 | expanding, get variables set: $address_data, $domain_data, $localpart_data, | |
4273 | $host, $host_address, $host_port. */ | |
4274 | if (tp->expand_multi_domain) | |
4275 | deliver_set_expansions(addr); | |
4276 | ||
4277 | if (exp_bool(addr, US"transport", tp->name, D_transport, | |
4278 | US"multi_domain", tp->multi_domain, tp->expand_multi_domain, | |
4279 | &multi_domain) != OK) | |
4280 | { | |
4281 | deliver_set_expansions(NULL); | |
d6c82d7b JH |
4282 | panicmsg = addr->message; |
4283 | goto panic_continue; | |
506900af | 4284 | } |
059ec3d9 PH |
4285 | |
4286 | /* Get the maximum it can handle in one envelope, with zero meaning | |
4287 | unlimited, which is forced for the MUA wrapper case. */ | |
4288 | ||
4289 | address_count_max = tp->max_addresses; | |
4290 | if (address_count_max == 0 || mua_wrapper) address_count_max = 999999; | |
4291 | ||
4292 | ||
4293 | /************************************************************************/ | |
4294 | /***** This is slightly experimental code, but should be safe. *****/ | |
4295 | ||
4296 | /* The address_count_max value is the maximum number of addresses that the | |
4297 | transport can send in one envelope. However, the transport must be capable of | |
4298 | dealing with any number of addresses. If the number it gets exceeds its | |
4299 | envelope limitation, it must send multiple copies of the message. This can be | |
4300 | done over a single connection for SMTP, so uses less resources than making | |
4301 | multiple connections. On the other hand, if remote_max_parallel is greater | |
4302 | than one, it is perhaps a good idea to use parallel processing to move the | |
4303 | message faster, even if that results in multiple simultaneous connections to | |
4304 | the same host. | |
4305 | ||
4306 | How can we come to some compromise between these two ideals? What we do is to | |
4307 | limit the number of addresses passed to a single instance of a transport to | |
4308 | the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total | |
4309 | number of addresses routed to remote transports divided by | |
4310 | remote_max_parallel. For example, if the message has 100 remote recipients, | |
4311 | remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at | |
4312 | once. But if rcpt_max is 100, we could send up to 100. | |
4313 | ||
4314 | Of course, not all the remotely addresses in a message are going to go to the | |
4315 | same set of hosts (except in smarthost configurations), so this is just a | |
4316 | heuristic way of dividing up the work. | |
4317 | ||
4318 | Furthermore (1), because this may not be wanted in some cases, and also to | |
4319 | cope with really pathological cases, there is also a limit to the number of | |
4320 | messages that are sent over one connection. This is the same limit that is | |
4321 | used when sending several different messages over the same connection. | |
4322 | Continue_sequence is set when in this situation, to the number sent so | |
4323 | far, including this message. | |
4324 | ||
4325 | Furthermore (2), when somebody explicitly sets the maximum value to 1, it | |
4326 | is probably because they are using VERP, in which case they want to pass only | |
4327 | one address at a time to the transport, in order to be able to use | |
4328 | $local_part and $domain in constructing a new return path. We could test for | |
4329 | the use of these variables, but as it is so likely they will be used when the | |
4330 | maximum is 1, we don't bother. Just leave the value alone. */ | |
4331 | ||
d6c82d7b JH |
4332 | if ( address_count_max != 1 |
4333 | && address_count_max < remote_delivery_count/remote_max_parallel | |
4334 | ) | |
059ec3d9 PH |
4335 | { |
4336 | int new_max = remote_delivery_count/remote_max_parallel; | |
4337 | int message_max = tp->connection_max_messages; | |
4338 | if (connection_max_messages >= 0) message_max = connection_max_messages; | |
4339 | message_max -= continue_sequence - 1; | |
4340 | if (message_max > 0 && new_max > address_count_max * message_max) | |
4341 | new_max = address_count_max * message_max; | |
4342 | address_count_max = new_max; | |
4343 | } | |
4344 | ||
4345 | /************************************************************************/ | |
4346 | ||
4347 | ||
4348 | /* Pick off all addresses which have the same transport, errors address, | |
4349 | destination, and extra headers. In some cases they point to the same host | |
4350 | list, but we also need to check for identical host lists generated from | |
4351 | entirely different domains. The host list pointers can be NULL in the case | |
4352 | where the hosts are defined in the transport. There is also a configured | |
4353 | maximum limit of addresses that can be handled at once (see comments above | |
506900af JH |
4354 | for how it is computed). |
4355 | If the transport does not handle multiple domains, enforce that also, | |
4356 | and if it might need a per-address check for this, re-evaluate it. | |
4357 | */ | |
059ec3d9 | 4358 | |
d6c82d7b | 4359 | while ((next = *anchor) && address_count < address_count_max) |
059ec3d9 | 4360 | { |
506900af JH |
4361 | BOOL md; |
4362 | if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0) | |
4363 | && tp == next->transport | |
4364 | && same_hosts(next->host_list, addr->host_list) | |
d43cbe25 JH |
4365 | && same_strings(next->prop.errors_address, addr->prop.errors_address) |
4366 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
506900af | 4367 | && same_ugid(tp, next, addr) |
d43cbe25 JH |
4368 | && ( next->prop.remove_headers == addr->prop.remove_headers |
4369 | || ( next->prop.remove_headers | |
4370 | && addr->prop.remove_headers | |
4371 | && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0 | |
506900af JH |
4372 | ) ) |
4373 | && ( !multi_domain | |
4374 | || ( ( | |
863bd541 | 4375 | (void)(!tp->expand_multi_domain || ((void)deliver_set_expansions(next), 1)), |
506900af JH |
4376 | exp_bool(addr, |
4377 | US"transport", next->transport->name, D_transport, | |
4378 | US"multi_domain", next->transport->multi_domain, | |
4379 | next->transport->expand_multi_domain, &md) == OK | |
4380 | ) | |
4381 | && md | |
4382 | ) ) ) | |
059ec3d9 PH |
4383 | { |
4384 | *anchor = next->next; | |
4385 | next->next = NULL; | |
4386 | next->first = addr; /* remember top one (for retry processing) */ | |
4387 | last->next = next; | |
4388 | last = next; | |
4389 | address_count++; | |
4390 | } | |
4391 | else anchor = &(next->next); | |
506900af | 4392 | deliver_set_expansions(NULL); |
059ec3d9 PH |
4393 | } |
4394 | ||
4395 | /* If we are acting as an MUA wrapper, all addresses must go in a single | |
4396 | transaction. If not, put them back on the chain and yield FALSE. */ | |
4397 | ||
d6c82d7b | 4398 | if (mua_wrapper && addr_remote) |
059ec3d9 PH |
4399 | { |
4400 | last->next = addr_remote; | |
4401 | addr_remote = addr; | |
4402 | return FALSE; | |
4403 | } | |
4404 | ||
fa41615d JH |
4405 | /* If the transport is limited for parallellism, enforce that here. |
4406 | The hints DB entry is decremented in par_reduce(), when we reap the | |
4407 | transport process. */ | |
4408 | ||
3070ceee JH |
4409 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
4410 | if ((panicmsg = expand_string_message)) | |
fa41615d | 4411 | goto panic_continue; |
3070ceee JH |
4412 | else |
4413 | continue; /* Loop for the next set of addresses. */ | |
fa41615d | 4414 | |
059ec3d9 PH |
4415 | /* Set up the expansion variables for this set of addresses */ |
4416 | ||
4417 | deliver_set_expansions(addr); | |
4418 | ||
018c60d7 JH |
4419 | /* Ensure any transport-set auth info is fresh */ |
4420 | addr->authenticator = addr->auth_id = addr->auth_sndr = NULL; | |
4421 | ||
059ec3d9 PH |
4422 | /* Compute the return path, expanding a new one if required. The old one |
4423 | must be set first, as it might be referred to in the expansion. */ | |
4424 | ||
d6c82d7b | 4425 | if(addr->prop.errors_address) |
d43cbe25 | 4426 | return_path = addr->prop.errors_address; |
384152a6 | 4427 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 4428 | else if(addr->prop.srs_sender) |
d43cbe25 | 4429 | return_path = addr->prop.srs_sender; |
384152a6 TK |
4430 | #endif |
4431 | else | |
4432 | return_path = sender_address; | |
059ec3d9 | 4433 | |
d6c82d7b | 4434 | if (tp->return_path) |
059ec3d9 PH |
4435 | { |
4436 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b JH |
4437 | if (new_return_path) |
4438 | return_path = new_return_path; | |
8768d548 | 4439 | else if (!f.expand_string_forcedfail) |
059ec3d9 | 4440 | { |
d6c82d7b JH |
4441 | panicmsg = string_sprintf("Failed to expand return path \"%s\": %s", |
4442 | tp->return_path, expand_string_message); | |
fa41615d | 4443 | goto enq_continue; |
059ec3d9 | 4444 | } |
059ec3d9 PH |
4445 | } |
4446 | ||
929ba01c PH |
4447 | /* Find the uid, gid, and use_initgroups setting for this transport. Failure |
4448 | logs and sets up error messages, so we just post-process and continue with | |
4449 | the next address. */ | |
4450 | ||
4451 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) | |
4452 | { | |
d6c82d7b | 4453 | panicmsg = NULL; |
fa41615d | 4454 | goto enq_continue; |
929ba01c PH |
4455 | } |
4456 | ||
059ec3d9 PH |
4457 | /* If this transport has a setup function, call it now so that it gets |
4458 | run in this process and not in any subprocess. That way, the results of | |
929ba01c PH |
4459 | any setup that are retained by the transport can be reusable. One of the |
4460 | things the setup does is to set the fallback host lists in the addresses. | |
4461 | That is why it is called at this point, before the continue delivery | |
4462 | processing, because that might use the fallback hosts. */ | |
059ec3d9 | 4463 | |
d6c82d7b | 4464 | if (tp->setup) |
929ba01c | 4465 | (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL)); |
059ec3d9 | 4466 | |
57cc2785 JH |
4467 | /* If we have a connection still open from a verify stage (lazy-close) |
4468 | treat it as if it is a continued connection (apart from the counter used | |
4469 | for the log line mark). */ | |
4470 | ||
74f1a423 | 4471 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 JH |
4472 | { |
4473 | DEBUG(D_deliver) | |
4474 | debug_printf("lazy-callout-close: have conn still open from verification\n"); | |
4475 | continue_transport = cutthrough.transport; | |
4476 | continue_hostname = string_copy(cutthrough.host.name); | |
4477 | continue_host_address = string_copy(cutthrough.host.address); | |
4478 | continue_sequence = 1; | |
4479 | sending_ip_address = cutthrough.snd_ip; | |
4480 | sending_port = cutthrough.snd_port; | |
4481 | smtp_peer_options = cutthrough.peer_options; | |
4482 | } | |
4483 | ||
059ec3d9 PH |
4484 | /* If this is a run to continue delivery down an already-established |
4485 | channel, check that this set of addresses matches the transport and | |
4486 | the channel. If it does not, defer the addresses. If a host list exists, | |
4487 | we must check that the continue host is on the list. Otherwise, the | |
4488 | host is set in the transport. */ | |
4489 | ||
8768d548 | 4490 | f.continue_more = FALSE; /* In case got set for the last lot */ |
d6c82d7b | 4491 | if (continue_transport) |
059ec3d9 PH |
4492 | { |
4493 | BOOL ok = Ustrcmp(continue_transport, tp->name) == 0; | |
e39fdc85 JH |
4494 | |
4495 | /* If the transport is about to override the host list do not check | |
4496 | it here but take the cost of running the transport process to discover | |
4497 | if the continued_hostname connection is suitable. This is a layering | |
4498 | violation which is unfortunate as it requires we haul in the smtp | |
4499 | include file. */ | |
4500 | ||
4501 | if (ok) | |
059ec3d9 | 4502 | { |
e39fdc85 JH |
4503 | smtp_transport_options_block * ob; |
4504 | ||
d7571ac5 | 4505 | if ( !( Ustrcmp(tp->info->driver_name, "smtp") == 0 |
e39fdc85 JH |
4506 | && (ob = (smtp_transport_options_block *)tp->options_block) |
4507 | && ob->hosts_override && ob->hosts | |
4508 | ) | |
4509 | && addr->host_list | |
4510 | ) | |
4511 | { | |
e39fdc85 | 4512 | ok = FALSE; |
d7978c0f | 4513 | for (host_item * h = addr->host_list; h; h = h->next) |
e39fdc85 JH |
4514 | if (Ustrcmp(h->name, continue_hostname) == 0) |
4515 | /*XXX should also check port here */ | |
4516 | { ok = TRUE; break; } | |
4517 | } | |
059ec3d9 PH |
4518 | } |
4519 | ||
4520 | /* Addresses not suitable; defer or queue for fallback hosts (which | |
4521 | might be the continue host) and skip to next address. */ | |
4522 | ||
4523 | if (!ok) | |
4524 | { | |
e47252f5 JH |
4525 | DEBUG(D_deliver) debug_printf("not suitable for continue_transport (%s)\n", |
4526 | Ustrcmp(continue_transport, tp->name) != 0 | |
4527 | ? string_sprintf("tpt %s vs %s", continue_transport, tp->name) | |
4528 | : string_sprintf("no host matching %s", continue_hostname)); | |
fa41615d | 4529 | if (serialize_key) enq_end(serialize_key); |
059ec3d9 | 4530 | |
d6c82d7b | 4531 | if (addr->fallback_hosts && !fallback) |
059ec3d9 | 4532 | { |
fa41615d | 4533 | for (next = addr; ; next = next->next) |
059ec3d9 PH |
4534 | { |
4535 | next->host_list = next->fallback_hosts; | |
4536 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address); | |
d6c82d7b | 4537 | if (!next->next) break; |
059ec3d9 PH |
4538 | } |
4539 | next->next = addr_fallback; | |
4540 | addr_fallback = addr; | |
4541 | } | |
4542 | ||
e3b1f624 | 4543 | else |
3070ceee | 4544 | { |
e3b1f624 JH |
4545 | for (next = addr; ; next = next->next) |
4546 | { | |
4547 | DEBUG(D_deliver) debug_printf(" %s to def list\n", next->address); | |
4548 | if (!next->next) break; | |
4549 | } | |
3070ceee JH |
4550 | next->next = addr_defer; |
4551 | addr_defer = addr; | |
4552 | } | |
059ec3d9 PH |
4553 | |
4554 | continue; | |
4555 | } | |
4556 | ||
4557 | /* Set a flag indicating whether there are further addresses that list | |
4558 | the continued host. This tells the transport to leave the channel open, | |
6c140c01 JH |
4559 | but not to pass it to another delivery process. We'd like to do that |
4560 | for non-continue_transport cases too but the knowlege of which host is | |
4561 | connected to is too hard to manage. Perhaps we need a finer-grain | |
4562 | interface to the transport. */ | |
059ec3d9 | 4563 | |
8768d548 | 4564 | for (next = addr_remote; next && !f.continue_more; next = next->next) |
d7978c0f | 4565 | for (host_item * h = next->host_list; h; h = h->next) |
059ec3d9 | 4566 | if (Ustrcmp(h->name, continue_hostname) == 0) |
8768d548 | 4567 | { f.continue_more = TRUE; break; } |
059ec3d9 PH |
4568 | } |
4569 | ||
4570 | /* The transports set up the process info themselves as they may connect | |
4571 | to more than one remote machine. They also have to set up the filter | |
4572 | arguments, if required, so that the host name and address are available | |
4573 | for expansion. */ | |
4574 | ||
4575 | transport_filter_argv = NULL; | |
4576 | ||
059ec3d9 PH |
4577 | /* Create the pipe for inter-process communication. If pipe creation |
4578 | fails, it is probably because the value of remote_max_parallel is so | |
4579 | large that too many file descriptors for pipes have been created. Arrange | |
4580 | to wait for a process to finish, and then try again. If we still can't | |
4581 | create a pipe when all processes have finished, break the retry loop. */ | |
4582 | ||
4583 | while (!pipe_done) | |
4584 | { | |
4585 | if (pipe(pfd) == 0) pipe_done = TRUE; | |
4586 | else if (parcount > 0) parmax = parcount; | |
4587 | else break; | |
4588 | ||
4589 | /* We need to make the reading end of the pipe non-blocking. There are | |
4590 | two different options for this. Exim is cunningly (I hope!) coded so | |
4591 | that it can use either of them, though it prefers O_NONBLOCK, which | |
4592 | distinguishes between EOF and no-more-data. */ | |
4593 | ||
4c0a7a9c HSHR |
4594 | /* The data appears in a timely manner and we already did a select on |
4595 | all pipes, so I do not see a reason to use non-blocking IO here | |
4596 | ||
a7538db1 | 4597 | #ifdef O_NONBLOCK |
ff790e47 | 4598 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK); |
a7538db1 | 4599 | #else |
ff790e47 | 4600 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY); |
a7538db1 | 4601 | #endif |
4c0a7a9c | 4602 | */ |
059ec3d9 PH |
4603 | |
4604 | /* If the maximum number of subprocesses already exist, wait for a process | |
4605 | to finish. If we ran out of file descriptors, parmax will have been reduced | |
4606 | from its initial value of remote_max_parallel. */ | |
4607 | ||
4608 | par_reduce(parmax - 1, fallback); | |
4609 | } | |
4610 | ||
4611 | /* If we failed to create a pipe and there were no processes to wait | |
4612 | for, we have to give up on this one. Do this outside the above loop | |
4613 | so that we can continue the main loop. */ | |
4614 | ||
4615 | if (!pipe_done) | |
4616 | { | |
d6c82d7b | 4617 | panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno)); |
fa41615d | 4618 | goto enq_continue; |
059ec3d9 PH |
4619 | } |
4620 | ||
4621 | /* Find a free slot in the pardata list. Must do this after the possible | |
4622 | waiting for processes to finish, because a terminating process will free | |
4623 | up a slot. */ | |
4624 | ||
4625 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
d6c82d7b JH |
4626 | if (parlist[poffset].pid == 0) |
4627 | break; | |
059ec3d9 PH |
4628 | |
4629 | /* If there isn't one, there has been a horrible disaster. */ | |
4630 | ||
4631 | if (poffset >= remote_max_parallel) | |
4632 | { | |
f1e894f3 PH |
4633 | (void)close(pfd[pipe_write]); |
4634 | (void)close(pfd[pipe_read]); | |
d6c82d7b | 4635 | panicmsg = US"Unexpectedly no free subprocess slot"; |
fa41615d | 4636 | goto enq_continue; |
059ec3d9 PH |
4637 | } |
4638 | ||
4639 | /* Now fork a subprocess to do the remote delivery, but before doing so, | |
4c04137d | 4640 | ensure that any cached resources are released so as not to interfere with |
059ec3d9 PH |
4641 | what happens in the subprocess. */ |
4642 | ||
4643 | search_tidyup(); | |
4644 | ||
ff966302 | 4645 | DEBUG(D_deliver) debug_printf("forking transport process\n"); |
059ec3d9 PH |
4646 | if ((pid = fork()) == 0) |
4647 | { | |
4648 | int fd = pfd[pipe_write]; | |
4649 | host_item *h; | |
4650 | ||
2a47f028 JH |
4651 | /* Setting this global in the subprocess means we need never clear it */ |
4652 | transport_name = tp->name; | |
059ec3d9 | 4653 | |
2a47f028 | 4654 | /* There are weird circumstances in which logging is disabled */ |
8768d548 | 4655 | f.disable_logging = tp->disable_logging; |
059ec3d9 PH |
4656 | |
4657 | /* Show pids on debug output if parallelism possible */ | |
4658 | ||
d6c82d7b | 4659 | if (parmax > 1 && (parcount > 0 || addr_remote)) |
059ec3d9 PH |
4660 | { |
4661 | DEBUG(D_any|D_v) debug_selector |= D_pid; | |
4662 | DEBUG(D_deliver) debug_printf("Remote delivery process started\n"); | |
4663 | } | |
4664 | ||
4665 | /* Reset the random number generator, so different processes don't all | |
4666 | have the same sequence. In the test harness we want different, but | |
4667 | predictable settings for each delivery process, so do something explicit | |
4668 | here rather they rely on the fixed reset in the random number function. */ | |
4669 | ||
8768d548 | 4670 | random_seed = f.running_in_test_harness ? 42 + 2*delivery_count : 0; |
059ec3d9 PH |
4671 | |
4672 | /* Set close-on-exec on the pipe so that it doesn't get passed on to | |
4673 | a new process that may be forked to do another delivery down the same | |
4674 | SMTP connection. */ | |
4675 | ||
ff790e47 | 4676 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
059ec3d9 PH |
4677 | |
4678 | /* Close open file descriptors for the pipes of other processes | |
4679 | that are running in parallel. */ | |
4680 | ||
4681 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
f1e894f3 | 4682 | if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd); |
059ec3d9 PH |
4683 | |
4684 | /* This process has inherited a copy of the file descriptor | |
4685 | for the data file, but its file pointer is shared with all the | |
4686 | other processes running in parallel. Therefore, we have to re-open | |
4687 | the file in order to get a new file descriptor with its own | |
4688 | file pointer. We don't need to lock it, as the lock is held by | |
4689 | the parent process. There doesn't seem to be any way of doing | |
4690 | a dup-with-new-file-pointer. */ | |
4691 | ||
f1e894f3 | 4692 | (void)close(deliver_datafile); |
41313d92 JH |
4693 | { |
4694 | uschar * fname = spool_fname(US"input", message_subdir, message_id, US"-D"); | |
059ec3d9 | 4695 | |
92b0827a JH |
4696 | if ((deliver_datafile = Uopen(fname, |
4697 | #ifdef O_CLOEXEC | |
4698 | O_CLOEXEC | | |
4699 | #endif | |
4700 | O_RDWR | O_APPEND, 0)) < 0) | |
059ec3d9 | 4701 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote " |
41313d92 JH |
4702 | "parallel delivery: %s", fname, strerror(errno)); |
4703 | } | |
059ec3d9 PH |
4704 | |
4705 | /* Set the close-on-exec flag */ | |
92b0827a | 4706 | #ifndef O_CLOEXEC |
ff790e47 | 4707 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
059ec3d9 | 4708 | FD_CLOEXEC); |
92b0827a | 4709 | #endif |
059ec3d9 PH |
4710 | |
4711 | /* Set the uid/gid of this process; bombs out on failure. */ | |
4712 | ||
4713 | exim_setugid(uid, gid, use_initgroups, | |
4714 | string_sprintf("remote delivery to %s with transport=%s", | |
4715 | addr->address, tp->name)); | |
4716 | ||
4717 | /* Close the unwanted half of this process' pipe, set the process state, | |
4718 | and run the transport. Afterwards, transport_count will contain the number | |
4719 | of bytes written. */ | |
4720 | ||
f1e894f3 | 4721 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
4722 | set_process_info("delivering %s using %s", message_id, tp->name); |
4723 | debug_print_string(tp->debug_string); | |
4724 | if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr); | |
4725 | ||
4726 | set_process_info("delivering %s (just run %s for %s%s in subprocess)", | |
d6c82d7b | 4727 | message_id, tp->name, addr->address, addr->next ? ", ..." : ""); |
059ec3d9 PH |
4728 | |
4729 | /* Ensure any cached resources that we used are now released */ | |
4730 | ||
4731 | search_tidyup(); | |
4732 | ||
4733 | /* Pass the result back down the pipe. This is a lot more information | |
4734 | than is needed for a local delivery. We have to send back the error | |
4735 | status for each address, the usability status for each host that is | |
4736 | flagged as unusable, and all the retry items. When TLS is in use, we | |
4737 | send also the cipher and peerdn information. Each type of information | |
4738 | is flagged by an identifying byte, and is then in a fixed format (with | |
4739 | strings terminated by zeros), and there is a final terminator at the | |
4740 | end. The host information and retry information is all attached to | |
4741 | the first address, so that gets sent at the start. */ | |
4742 | ||
4743 | /* Host unusability information: for most success cases this will | |
4744 | be null. */ | |
4745 | ||
d6c82d7b | 4746 | for (h = addr->host_list; h; h = h->next) |
059ec3d9 | 4747 | { |
d6c82d7b | 4748 | if (!h->address || h->status < hstatus_unusable) continue; |
bd21a787 WB |
4749 | sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address); |
4750 | rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3); | |
059ec3d9 PH |
4751 | } |
4752 | ||
4753 | /* The number of bytes written. This is the same for each address. Even | |
4754 | if we sent several copies of the message down the same connection, the | |
4755 | size of each one is the same, and it's that value we have got because | |
4756 | transport_count gets reset before calling transport_write_message(). */ | |
4757 | ||
bd21a787 WB |
4758 | memcpy(big_buffer, &transport_count, sizeof(transport_count)); |
4759 | rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count)); | |
059ec3d9 | 4760 | |
6f123593 JH |
4761 | /* Information about what happened to each address. Four item types are |
4762 | used: an optional 'X' item first, for TLS information, then an optional "C" | |
4763 | item for any client-auth info followed by 'R' items for any retry settings, | |
4764 | and finally an 'A' item for the remaining data. */ | |
059ec3d9 | 4765 | |
d6c82d7b | 4766 | for(; addr; addr = addr->next) |
059ec3d9 PH |
4767 | { |
4768 | uschar *ptr; | |
059ec3d9 PH |
4769 | |
4770 | /* The certificate verification status goes into the flags */ | |
817d9f57 | 4771 | if (tls_out.certificate_verified) setflag(addr, af_cert_verified); |
c0635b6d | 4772 | #ifdef SUPPORT_DANE |
53a7196b | 4773 | if (tls_out.dane_verified) setflag(addr, af_dane_verified); |
a0a2d1ee | 4774 | #endif |
b10c87b3 JH |
4775 | # ifdef EXPERIMENTAL_TLS_RESUME |
4776 | if (tls_out.resumption & RESUME_USED) setflag(addr, af_tls_resume); | |
4777 | # endif | |
059ec3d9 PH |
4778 | |
4779 | /* Use an X item only if there's something to send */ | |
01603eec | 4780 | #ifndef DISABLE_TLS |
9d1c15ef | 4781 | if (addr->cipher) |
059ec3d9 | 4782 | { |
e6d2a989 | 4783 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1; |
9d1c15ef JH |
4784 | if (!addr->peerdn) |
4785 | *ptr++ = 0; | |
4786 | else | |
5e6d12ac | 4787 | ptr += sprintf(CS ptr, "%.512s", addr->peerdn) + 1; |
9d1c15ef | 4788 | |
bd21a787 | 4789 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); |
059ec3d9 | 4790 | } |
5013d912 JH |
4791 | else if (continue_proxy_cipher) |
4792 | { | |
4793 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", continue_proxy_cipher) + 1; | |
4794 | *ptr++ = 0; | |
4795 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); | |
4796 | } | |
5e6d12ac | 4797 | |
9d1c15ef JH |
4798 | if (addr->peercert) |
4799 | { | |
4800 | ptr = big_buffer; | |
2944124c | 4801 | if (tls_export_cert(ptr, big_buffer_size-2, addr->peercert)) |
9d1c15ef JH |
4802 | while(*ptr++); |
4803 | else | |
4804 | *ptr++ = 0; | |
bd21a787 | 4805 | rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer); |
9d1c15ef JH |
4806 | } |
4807 | if (addr->ourcert) | |
4808 | { | |
4809 | ptr = big_buffer; | |
2944124c | 4810 | if (tls_export_cert(ptr, big_buffer_size-2, addr->ourcert)) |
9d1c15ef JH |
4811 | while(*ptr++); |
4812 | else | |
4813 | *ptr++ = 0; | |
bd21a787 | 4814 | rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer); |
9d1c15ef | 4815 | } |
a7538db1 | 4816 | # ifndef DISABLE_OCSP |
018058b2 JH |
4817 | if (addr->ocsp > OCSP_NOT_REQ) |
4818 | { | |
e6d2a989 | 4819 | ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1; |
bd21a787 | 4820 | rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer); |
018058b2 | 4821 | } |
a7538db1 | 4822 | # endif |
01603eec | 4823 | #endif /*DISABLE_TLS*/ |
059ec3d9 | 4824 | |
6f123593 JH |
4825 | if (client_authenticator) |
4826 | { | |
e6d2a989 | 4827 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1; |
bd21a787 | 4828 | rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer); |
6f123593 JH |
4829 | } |
4830 | if (client_authenticated_id) | |
4831 | { | |
e6d2a989 | 4832 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1; |
bd21a787 | 4833 | rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer); |
6f123593 | 4834 | } |
c8e2fc1e JH |
4835 | if (client_authenticated_sender) |
4836 | { | |
e6d2a989 | 4837 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1; |
bd21a787 | 4838 | rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer); |
c8e2fc1e | 4839 | } |
6f123593 | 4840 | |
a7538db1 | 4841 | #ifndef DISABLE_PRDR |
7eb0e5d2 | 4842 | if (testflag(addr, af_prdr_used)) |
bd21a787 | 4843 | rmt_dlv_checked_write(fd, 'P', '0', NULL, 0); |
b75960c8 | 4844 | #endif |
fd98a5c6 | 4845 | |
7c576fca | 4846 | if (testflag(addr, af_pipelining)) |
81344b40 | 4847 | #ifndef DISABLE_PIPE_CONNECT |
ee8b8090 JH |
4848 | if (testflag(addr, af_early_pipe)) |
4849 | rmt_dlv_checked_write(fd, 'L', '2', NULL, 0); | |
4850 | else | |
4851 | #endif | |
7c576fca JH |
4852 | rmt_dlv_checked_write(fd, 'L', '1', NULL, 0); |
4853 | ||
7eb0e5d2 | 4854 | if (testflag(addr, af_chunking_used)) |
e0cc6cda JH |
4855 | rmt_dlv_checked_write(fd, 'K', '0', NULL, 0); |
4856 | ||
1ccd5f67 JH |
4857 | if (testflag(addr, af_tcp_fastopen_conn)) |
4858 | rmt_dlv_checked_write(fd, 'T', | |
ee8b8090 JH |
4859 | testflag(addr, af_tcp_fastopen) ? testflag(addr, af_tcp_fastopen_data) |
4860 | ? '2' : '1' : '0', | |
4861 | NULL, 0); | |
a2673768 | 4862 | |
bd21a787 WB |
4863 | memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware)); |
4864 | rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware)); | |
6c1c3d1d | 4865 | |
059ec3d9 PH |
4866 | /* Retry information: for most success cases this will be null. */ |
4867 | ||
dbbf21a7 | 4868 | for (retry_item * r = addr->retries; r; r = r->next) |
059ec3d9 | 4869 | { |
bd21a787 | 4870 | sprintf(CS big_buffer, "%c%.500s", r->flags, r->key); |
059ec3d9 | 4871 | ptr = big_buffer + Ustrlen(big_buffer+2) + 3; |
32dfdf8b | 4872 | memcpy(ptr, &r->basic_errno, sizeof(r->basic_errno)); |
059ec3d9 | 4873 | ptr += sizeof(r->basic_errno); |
32dfdf8b | 4874 | memcpy(ptr, &r->more_errno, sizeof(r->more_errno)); |
059ec3d9 | 4875 | ptr += sizeof(r->more_errno); |
d6c82d7b | 4876 | if (!r->message) *ptr++ = 0; else |
059ec3d9 PH |
4877 | { |
4878 | sprintf(CS ptr, "%.512s", r->message); | |
4879 | while(*ptr++); | |
4880 | } | |
bd21a787 | 4881 | rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4882 | } |
4883 | ||
e6d2a989 JH |
4884 | #ifdef SUPPORT_SOCKS |
4885 | if (LOGGING(proxy) && proxy_session) | |
4886 | { | |
4887 | ptr = big_buffer; | |
4888 | if (proxy_local_address) | |
4889 | { | |
4890 | DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address); | |
4891 | ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1; | |
4892 | DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port); | |
4893 | memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port)); | |
4894 | ptr += sizeof(proxy_local_port); | |
4895 | } | |
4896 | else | |
4897 | *ptr++ = '\0'; | |
4898 | rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer); | |
4899 | } | |
4900 | #endif | |
4901 | ||
895fbaf2 JH |
4902 | #ifdef EXPERIMENTAL_DSN_INFO |
4903 | /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */ | |
4904 | if (addr->smtp_greeting) | |
4905 | { | |
895fbaf2 | 4906 | DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting); |
e6d2a989 | 4907 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1; |
895fbaf2 JH |
4908 | if (addr->helo_response) |
4909 | { | |
4910 | DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response); | |
e6d2a989 | 4911 | ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1; |
895fbaf2 JH |
4912 | } |
4913 | else | |
4914 | *ptr++ = '\0'; | |
4915 | rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer); | |
4916 | } | |
4917 | #endif | |
4918 | ||
4919 | /* The rest of the information goes in an 'A0' item. */ | |
059ec3d9 | 4920 | |
e6d2a989 | 4921 | sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action); |
895fbaf2 | 4922 | ptr = big_buffer + 2; |
32dfdf8b | 4923 | memcpy(ptr, &addr->basic_errno, sizeof(addr->basic_errno)); |
059ec3d9 | 4924 | ptr += sizeof(addr->basic_errno); |
32dfdf8b | 4925 | memcpy(ptr, &addr->more_errno, sizeof(addr->more_errno)); |
059ec3d9 | 4926 | ptr += sizeof(addr->more_errno); |
a55697ac JH |
4927 | memcpy(ptr, &addr->delivery_time, sizeof(addr->delivery_time)); |
4928 | ptr += sizeof(addr->delivery_time); | |
32dfdf8b | 4929 | memcpy(ptr, &addr->flags, sizeof(addr->flags)); |
059ec3d9 PH |
4930 | ptr += sizeof(addr->flags); |
4931 | ||
d6c82d7b | 4932 | if (!addr->message) *ptr++ = 0; else |
e6d2a989 | 4933 | ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1; |
059ec3d9 | 4934 | |
d6c82d7b | 4935 | if (!addr->user_message) *ptr++ = 0; else |
e6d2a989 | 4936 | ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1; |
059ec3d9 | 4937 | |
d6c82d7b | 4938 | if (!addr->host_used) *ptr++ = 0; else |
059ec3d9 | 4939 | { |
e6d2a989 JH |
4940 | ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1; |
4941 | ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1; | |
32dfdf8b | 4942 | memcpy(ptr, &addr->host_used->port, sizeof(addr->host_used->port)); |
059ec3d9 | 4943 | ptr += sizeof(addr->host_used->port); |
783b385f JH |
4944 | |
4945 | /* DNS lookup status */ | |
4946 | *ptr++ = addr->host_used->dnssec==DS_YES ? '2' | |
4947 | : addr->host_used->dnssec==DS_NO ? '1' : '0'; | |
4948 | ||
059ec3d9 | 4949 | } |
bd21a787 | 4950 | rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4951 | } |
4952 | ||
aeaf5db3 | 4953 | /* Local interface address/port */ |
895fbaf2 JH |
4954 | #ifdef EXPERIMENTAL_DSN_INFO |
4955 | if (sending_ip_address) | |
4956 | #else | |
6c6d6e48 | 4957 | if (LOGGING(incoming_interface) && sending_ip_address) |
895fbaf2 | 4958 | #endif |
aeaf5db3 | 4959 | { |
e6d2a989 JH |
4960 | uschar * ptr; |
4961 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1; | |
4962 | ptr += sprintf(CS ptr, "%d", sending_port) + 1; | |
aeaf5db3 JH |
4963 | rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer); |
4964 | } | |
4965 | ||
059ec3d9 PH |
4966 | /* Add termination flag, close the pipe, and that's it. The character |
4967 | after 'Z' indicates whether continue_transport is now NULL or not. | |
4968 | A change from non-NULL to NULL indicates a problem with a continuing | |
4969 | connection. */ | |
4970 | ||
d6c82d7b | 4971 | big_buffer[0] = continue_transport ? '1' : '0'; |
bd21a787 | 4972 | rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1); |
f1e894f3 | 4973 | (void)close(fd); |
059ec3d9 PH |
4974 | exit(EXIT_SUCCESS); |
4975 | } | |
ff966302 | 4976 | DEBUG(D_deliver) debug_printf("forked transport process (%d)\n", pid); |
059ec3d9 PH |
4977 | |
4978 | /* Back in the mainline: close the unwanted half of the pipe. */ | |
4979 | ||
f1e894f3 | 4980 | (void)close(pfd[pipe_write]); |
059ec3d9 | 4981 | |
57cc2785 JH |
4982 | /* If we have a connection still open from a verify stage (lazy-close) |
4983 | release its TLS library context (if any) as responsibility was passed to | |
4984 | the delivery child process. */ | |
4985 | ||
74f1a423 | 4986 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 | 4987 | { |
01603eec | 4988 | #ifndef DISABLE_TLS |
74f1a423 JH |
4989 | if (cutthrough.is_tls) |
4990 | tls_close(cutthrough.cctx.tls_ctx, TLS_NO_SHUTDOWN); | |
57cc2785 | 4991 | #endif |
74f1a423 | 4992 | (void) close(cutthrough.cctx.sock); |
57cc2785 JH |
4993 | release_cutthrough_connection(US"passed to transport proc"); |
4994 | } | |
4995 | ||
059ec3d9 PH |
4996 | /* Fork failed; defer with error message */ |
4997 | ||
2cee425a | 4998 | if (pid == -1) |
059ec3d9 | 4999 | { |
f1e894f3 | 5000 | (void)close(pfd[pipe_read]); |
d6c82d7b JH |
5001 | panicmsg = string_sprintf("fork failed for remote delivery to %s: %s", |
5002 | addr->domain, strerror(errno)); | |
fa41615d | 5003 | goto enq_continue; |
059ec3d9 PH |
5004 | } |
5005 | ||
5006 | /* Fork succeeded; increment the count, and remember relevant data for | |
5007 | when the process finishes. */ | |
5008 | ||
5009 | parcount++; | |
5010 | parlist[poffset].addrlist = parlist[poffset].addr = addr; | |
5011 | parlist[poffset].pid = pid; | |
5012 | parlist[poffset].fd = pfd[pipe_read]; | |
5013 | parlist[poffset].done = FALSE; | |
5014 | parlist[poffset].msg = NULL; | |
5015 | parlist[poffset].return_path = return_path; | |
5016 | ||
5017 | /* If the process we've just started is sending a message down an existing | |
5018 | channel, wait for it now. This ensures that only one such process runs at | |
5019 | once, whatever the value of remote_max parallel. Otherwise, we might try to | |
5020 | send two or more messages simultaneously down the same channel. This could | |
5021 | happen if there are different domains that include the same host in otherwise | |
5022 | different host lists. | |
5023 | ||
5024 | Also, if the transport closes down the channel, this information gets back | |
5025 | (continue_transport gets set to NULL) before we consider any other addresses | |
5026 | in this message. */ | |
5027 | ||
d6c82d7b | 5028 | if (continue_transport) par_reduce(0, fallback); |
059ec3d9 PH |
5029 | |
5030 | /* Otherwise, if we are running in the test harness, wait a bit, to let the | |
5031 | newly created process get going before we create another process. This should | |
f8597898 JH |
5032 | ensure repeatability in the tests. Wait long enough for most cases to complete |
5033 | the transport. */ | |
059ec3d9 | 5034 | |
f8597898 | 5035 | else testharness_pause_ms(600); |
d6c82d7b JH |
5036 | |
5037 | continue; | |
5038 | ||
fa41615d JH |
5039 | enq_continue: |
5040 | if (serialize_key) enq_end(serialize_key); | |
d6c82d7b JH |
5041 | panic_continue: |
5042 | remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback); | |
5043 | continue; | |
059ec3d9 PH |
5044 | } |
5045 | ||
5046 | /* Reached the end of the list of addresses. Wait for all the subprocesses that | |
5047 | are still running and post-process their addresses. */ | |
5048 | ||
5049 | par_reduce(0, fallback); | |
5050 | return TRUE; | |
5051 | } | |
5052 | ||
5053 | ||
5054 | ||
5055 | ||
5056 | /************************************************* | |
5057 | * Split an address into local part and domain * | |
5058 | *************************************************/ | |
5059 | ||
5060 | /* This function initializes an address for routing by splitting it up into a | |
5061 | local part and a domain. The local part is set up twice - once in its original | |
5062 | casing, and once in lower case, and it is dequoted. We also do the "percent | |
5063 | hack" for configured domains. This may lead to a DEFER result if a lookup | |
5064 | defers. When a percent-hacking takes place, we insert a copy of the original | |
5065 | address as a new parent of this address, as if we have had a redirection. | |
5066 | ||
5067 | Argument: | |
5068 | addr points to an addr_item block containing the address | |
5069 | ||
5070 | Returns: OK | |
5071 | DEFER - could not determine if domain is %-hackable | |
5072 | */ | |
5073 | ||
5074 | int | |
fb5908b1 | 5075 | deliver_split_address(address_item * addr) |
059ec3d9 | 5076 | { |
fb5908b1 JH |
5077 | uschar * address = addr->address; |
5078 | uschar * domain; | |
5079 | uschar * t; | |
5080 | int len; | |
059ec3d9 | 5081 | |
fb5908b1 JH |
5082 | if (!(domain = Ustrrchr(address, '@'))) |
5083 | return DEFER; /* should always have a domain, but just in case... */ | |
5084 | ||
5085 | len = domain - address; | |
059ec3d9 PH |
5086 | addr->domain = string_copylc(domain+1); /* Domains are always caseless */ |
5087 | ||
5088 | /* The implication in the RFCs (though I can't say I've seen it spelled out | |
5089 | explicitly) is that quoting should be removed from local parts at the point | |
5090 | where they are locally interpreted. [The new draft "821" is more explicit on | |
5091 | this, Jan 1999.] We know the syntax is valid, so this can be done by simply | |
5092 | removing quoting backslashes and any unquoted doublequotes. */ | |
5093 | ||
f3ebb786 | 5094 | t = addr->cc_local_part = store_get(len+1, is_tainted(address)); |
059ec3d9 PH |
5095 | while(len-- > 0) |
5096 | { | |
fb5908b1 | 5097 | int c = *address++; |
059ec3d9 PH |
5098 | if (c == '\"') continue; |
5099 | if (c == '\\') | |
5100 | { | |
5101 | *t++ = *address++; | |
5102 | len--; | |
5103 | } | |
5104 | else *t++ = c; | |
5105 | } | |
5106 | *t = 0; | |
5107 | ||
5108 | /* We do the percent hack only for those domains that are listed in | |
5109 | percent_hack_domains. A loop is required, to copy with multiple %-hacks. */ | |
5110 | ||
d6c82d7b | 5111 | if (percent_hack_domains) |
059ec3d9 PH |
5112 | { |
5113 | int rc; | |
5114 | uschar *new_address = NULL; | |
5115 | uschar *local_part = addr->cc_local_part; | |
5116 | ||
5117 | deliver_domain = addr->domain; /* set $domain */ | |
5118 | ||
d6c82d7b JH |
5119 | while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0, |
5120 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) | |
5121 | == OK | |
5122 | && (t = Ustrrchr(local_part, '%')) != NULL | |
5123 | ) | |
059ec3d9 PH |
5124 | { |
5125 | new_address = string_copy(local_part); | |
5126 | new_address[t - local_part] = '@'; | |
5127 | deliver_domain = string_copylc(t+1); | |
5128 | local_part = string_copyn(local_part, t - local_part); | |
5129 | } | |
5130 | ||
5131 | if (rc == DEFER) return DEFER; /* lookup deferred */ | |
5132 | ||
5133 | /* If hackery happened, set up new parent and alter the current address. */ | |
5134 | ||
d6c82d7b | 5135 | if (new_address) |
059ec3d9 | 5136 | { |
f3ebb786 | 5137 | address_item *new_parent = store_get(sizeof(address_item), FALSE); |
059ec3d9 PH |
5138 | *new_parent = *addr; |
5139 | addr->parent = new_parent; | |
82f90600 | 5140 | new_parent->child_count = 1; |
059ec3d9 PH |
5141 | addr->address = new_address; |
5142 | addr->unique = string_copy(new_address); | |
5143 | addr->domain = deliver_domain; | |
5144 | addr->cc_local_part = local_part; | |
5145 | DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n", | |
5146 | addr->address); | |
5147 | } | |
5148 | } | |
5149 | ||
5150 | /* Create the lowercased version of the final local part, and make that the | |
5151 | default one to be used. */ | |
5152 | ||
5153 | addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part); | |
5154 | return OK; | |
5155 | } | |
5156 | ||
5157 | ||
5158 | ||
5159 | ||
5160 | /************************************************* | |
5161 | * Get next error message text * | |
5162 | *************************************************/ | |
5163 | ||
5164 | /* If f is not NULL, read the next "paragraph", from a customized error message | |
5165 | text file, terminated by a line containing ****, and expand it. | |
5166 | ||
5167 | Arguments: | |
5168 | f NULL or a file to read from | |
5169 | which string indicating which string (for errors) | |
5170 | ||
5171 | Returns: NULL or an expanded string | |
5172 | */ | |
5173 | ||
5174 | static uschar * | |
5175 | next_emf(FILE *f, uschar *which) | |
5176 | { | |
acec9514 JH |
5177 | uschar *yield; |
5178 | gstring * para; | |
059ec3d9 PH |
5179 | uschar buffer[256]; |
5180 | ||
d6c82d7b | 5181 | if (!f) return NULL; |
059ec3d9 | 5182 | |
d6c82d7b JH |
5183 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
5184 | return NULL; | |
059ec3d9 | 5185 | |
acec9514 | 5186 | para = string_get(256); |
059ec3d9 PH |
5187 | for (;;) |
5188 | { | |
acec9514 | 5189 | para = string_cat(para, buffer); |
d6c82d7b JH |
5190 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
5191 | break; | |
059ec3d9 | 5192 | } |
acec9514 | 5193 | if ((yield = expand_string(string_from_gstring(para)))) |
d6c82d7b | 5194 | return yield; |
059ec3d9 PH |
5195 | |
5196 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from " | |
5197 | "bounce_message_file or warn_message_file (%s): %s", which, | |
5198 | expand_string_message); | |
5199 | return NULL; | |
5200 | } | |
5201 | ||
5202 | ||
5203 | ||
5204 | ||
5205 | /************************************************* | |
5206 | * Close down a passed transport channel * | |
5207 | *************************************************/ | |
5208 | ||
5209 | /* This function is called when a passed transport channel cannot be used. | |
5210 | It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED | |
5211 | so that the function call can be the argument of a "return" statement. | |
5212 | ||
5213 | Arguments: None | |
5214 | Returns: DELIVER_NOT_ATTEMPTED | |
5215 | */ | |
5216 | ||
5217 | static int | |
5218 | continue_closedown(void) | |
5219 | { | |
d6c82d7b | 5220 | if (continue_transport) |
d7978c0f | 5221 | for (transport_instance * t = transports; t; t = t->next) |
059ec3d9 PH |
5222 | if (Ustrcmp(t->name, continue_transport) == 0) |
5223 | { | |
d6c82d7b | 5224 | if (t->info->closedown) (t->info->closedown)(t); |
059ec3d9 PH |
5225 | break; |
5226 | } | |
059ec3d9 PH |
5227 | return DELIVER_NOT_ATTEMPTED; |
5228 | } | |
5229 | ||
5230 | ||
5231 | ||
5232 | ||
5233 | /************************************************* | |
5234 | * Print address information * | |
5235 | *************************************************/ | |
5236 | ||
5237 | /* This function is called to output an address, or information about an | |
5238 | address, for bounce or defer messages. If the hide_child flag is set, all we | |
5239 | output is the original ancestor address. | |
5240 | ||
5241 | Arguments: | |
5242 | addr points to the address | |
5243 | f the FILE to print to | |
5244 | si an initial string | |
5245 | sc a continuation string for before "generated" | |
5246 | se an end string | |
5247 | ||
5248 | Returns: TRUE if the address is not hidden | |
5249 | */ | |
5250 | ||
5251 | static BOOL | |
5252 | print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc, | |
5253 | uschar *se) | |
5254 | { | |
5255 | BOOL yield = TRUE; | |
5256 | uschar *printed = US""; | |
5257 | address_item *ancestor = addr; | |
d6c82d7b | 5258 | while (ancestor->parent) ancestor = ancestor->parent; |
059ec3d9 PH |
5259 | |
5260 | fprintf(f, "%s", CS si); | |
5261 | ||
d6c82d7b | 5262 | if (addr->parent && testflag(addr, af_hide_child)) |
059ec3d9 PH |
5263 | { |
5264 | printed = US"an undisclosed address"; | |
5265 | yield = FALSE; | |
5266 | } | |
d6c82d7b | 5267 | else if (!testflag(addr, af_pfr) || !addr->parent) |
059ec3d9 PH |
5268 | printed = addr->address; |
5269 | ||
5270 | else | |
5271 | { | |
5272 | uschar *s = addr->address; | |
5273 | uschar *ss; | |
5274 | ||
5275 | if (addr->address[0] == '>') { ss = US"mail"; s++; } | |
5276 | else if (addr->address[0] == '|') ss = US"pipe"; | |
5277 | else ss = US"save"; | |
5278 | ||
5279 | fprintf(f, "%s to %s%sgenerated by ", ss, s, sc); | |
5280 | printed = addr->parent->address; | |
5281 | } | |
5282 | ||
5283 | fprintf(f, "%s", CS string_printing(printed)); | |
5284 | ||
5285 | if (ancestor != addr) | |
5286 | { | |
d6c82d7b JH |
5287 | uschar *original = ancestor->onetime_parent; |
5288 | if (!original) original= ancestor->address; | |
059ec3d9 PH |
5289 | if (strcmpic(original, printed) != 0) |
5290 | fprintf(f, "%s(%sgenerated from %s)", sc, | |
d6c82d7b | 5291 | ancestor != addr->parent ? "ultimately " : "", |
059ec3d9 PH |
5292 | string_printing(original)); |
5293 | } | |
5294 | ||
c562fd30 JH |
5295 | if (addr->host_used) |
5296 | fprintf(f, "\n host %s [%s]", | |
5297 | addr->host_used->name, addr->host_used->address); | |
5298 | ||
059ec3d9 PH |
5299 | fprintf(f, "%s", CS se); |
5300 | return yield; | |
5301 | } | |
5302 | ||
5303 | ||
5304 | ||
5305 | ||
5306 | ||
059ec3d9 PH |
5307 | /************************************************* |
5308 | * Print error for an address * | |
5309 | *************************************************/ | |
5310 | ||
5311 | /* This function is called to print the error information out of an address for | |
5312 | a bounce or a warning message. It tries to format the message reasonably by | |
5313 | introducing newlines. All lines are indented by 4; the initial printing | |
5314 | position must be set before calling. | |
5315 | ||
447d236c | 5316 | This function used always to print the error. Nowadays we want to restrict it |
75def545 PH |
5317 | to cases such as LMTP/SMTP errors from a remote host, and errors from :fail: |
5318 | and filter "fail". We no longer pass other information willy-nilly in bounce | |
5319 | and warning messages. Text in user_message is always output; text in message | |
5320 | only if the af_pass_message flag is set. | |
447d236c | 5321 | |
059ec3d9 | 5322 | Arguments: |
447d236c | 5323 | addr the address |
059ec3d9 | 5324 | f the FILE to print on |
75def545 | 5325 | t some leading text |
059ec3d9 PH |
5326 | |
5327 | Returns: nothing | |
5328 | */ | |
5329 | ||
5330 | static void | |
447d236c | 5331 | print_address_error(address_item *addr, FILE *f, uschar *t) |
059ec3d9 | 5332 | { |
447d236c | 5333 | int count = Ustrlen(t); |
de6f74f2 | 5334 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
447d236c | 5335 | |
0ba0ee97 JH |
5336 | if (!s && !(s = addr->user_message)) |
5337 | return; | |
447d236c PH |
5338 | |
5339 | fprintf(f, "\n %s", t); | |
5340 | ||
0ba0ee97 | 5341 | while (*s) |
447d236c PH |
5342 | if (*s == '\\' && s[1] == 'n') |
5343 | { | |
5344 | fprintf(f, "\n "); | |
5345 | s += 2; | |
5346 | count = 0; | |
5347 | } | |
5348 | else | |
059ec3d9 | 5349 | { |
447d236c PH |
5350 | fputc(*s, f); |
5351 | count++; | |
5352 | if (*s++ == ':' && isspace(*s) && count > 45) | |
059ec3d9 | 5353 | { |
447d236c | 5354 | fprintf(f, "\n "); /* sic (because space follows) */ |
059ec3d9 PH |
5355 | count = 0; |
5356 | } | |
059ec3d9 | 5357 | } |
059ec3d9 PH |
5358 | } |
5359 | ||
5360 | ||
21bc4865 WB |
5361 | /*********************************************************** |
5362 | * Print Diagnostic-Code for an address * | |
5363 | ************************************************************/ | |
5364 | ||
5365 | /* This function is called to print the error information out of an address for | |
5366 | a bounce or a warning message. It tries to format the message reasonably as | |
5367 | required by RFC 3461 by adding a space after each newline | |
5368 | ||
ca410e79 WB |
5369 | it uses the same logic as print_address_error() above. if af_pass_message is true |
5370 | and addr->message is set it uses the remote host answer. if not addr->user_message | |
5371 | is used instead if available. | |
21bc4865 WB |
5372 | |
5373 | Arguments: | |
5374 | addr the address | |
5375 | f the FILE to print on | |
5376 | ||
5377 | Returns: nothing | |
5378 | */ | |
5379 | ||
5380 | static void | |
5381 | print_dsn_diagnostic_code(const address_item *addr, FILE *f) | |
5382 | { | |
ca410e79 | 5383 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
21bc4865 | 5384 | |
ca410e79 WB |
5385 | /* af_pass_message and addr->message set ? print remote host answer */ |
5386 | if (s) | |
5387 | { | |
5388 | DEBUG(D_deliver) | |
5389 | debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message); | |
447d236c | 5390 | |
ca410e79 WB |
5391 | /* search first ": ". we assume to find the remote-MTA answer there */ |
5392 | if (!(s = Ustrstr(addr->message, ": "))) | |
5393 | return; /* not found, bail out */ | |
5394 | s += 2; /* skip ": " */ | |
5395 | fprintf(f, "Diagnostic-Code: smtp; "); | |
5396 | } | |
ca410e79 | 5397 | /* no message available. do nothing */ |
9031f51a | 5398 | else return; |
21bc4865 | 5399 | |
21bc4865 WB |
5400 | while (*s) |
5401 | if (*s == '\\' && s[1] == 'n') | |
5402 | { | |
5403 | fputs("\n ", f); /* as defined in RFC 3461 */ | |
5404 | s += 2; | |
5405 | } | |
5406 | else | |
5407 | fputc(*s++, f); | |
5408 | ||
5409 | fputc('\n', f); | |
5410 | } | |
447d236c PH |
5411 | |
5412 | ||
d7174846 PH |
5413 | /************************************************* |
5414 | * Check list of addresses for duplication * | |
5415 | *************************************************/ | |
5416 | ||
5417 | /* This function was introduced when the test for duplicate addresses that are | |
5418 | not pipes, files, or autoreplies was moved from the middle of routing to when | |
5419 | routing was complete. That was to fix obscure cases when the routing history | |
dbcef0ea PH |
5420 | affects the subsequent routing of identical addresses. This function is called |
5421 | after routing, to check that the final routed addresses are not duplicates. | |
d7174846 | 5422 | |
dbcef0ea PH |
5423 | If we detect a duplicate, we remember what it is a duplicate of. Note that |
5424 | pipe, file, and autoreply de-duplication is handled during routing, so we must | |
5425 | leave such "addresses" alone here, as otherwise they will incorrectly be | |
5426 | discarded. | |
d7174846 PH |
5427 | |
5428 | Argument: address of list anchor | |
5429 | Returns: nothing | |
5430 | */ | |
5431 | ||
5432 | static void | |
5433 | do_duplicate_check(address_item **anchor) | |
5434 | { | |
5435 | address_item *addr; | |
d6c82d7b | 5436 | while ((addr = *anchor)) |
d7174846 PH |
5437 | { |
5438 | tree_node *tnode; | |
5439 | if (testflag(addr, af_pfr)) | |
5440 | { | |
5441 | anchor = &(addr->next); | |
5442 | } | |
d6c82d7b | 5443 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
d7174846 PH |
5444 | { |
5445 | DEBUG(D_deliver|D_route) | |
5446 | debug_printf("%s is a duplicate address: discarded\n", addr->unique); | |
5447 | *anchor = addr->next; | |
5448 | addr->dupof = tnode->data.ptr; | |
5449 | addr->next = addr_duplicate; | |
5450 | addr_duplicate = addr; | |
5451 | } | |
5452 | else | |
5453 | { | |
5454 | tree_add_duplicate(addr->unique, addr); | |
5455 | anchor = &(addr->next); | |
5456 | } | |
5457 | } | |
5458 | } | |
5459 | ||
5460 | ||
5461 | ||
059ec3d9 | 5462 | |
436bda2a JH |
5463 | /************************************************/ |
5464 | ||
5465 | static void | |
5466 | print_dsn_addr_action(FILE * f, address_item * addr, | |
5467 | uschar * action, uschar * status) | |
5468 | { | |
5469 | address_item * pa; | |
5470 | ||
5471 | if (addr->dsn_orcpt) | |
5472 | fprintf(f,"Original-Recipient: %s\n", addr->dsn_orcpt); | |
5473 | ||
5474 | for (pa = addr; pa->parent; ) pa = pa->parent; | |
5475 | fprintf(f, "Action: %s\n" | |
5476 | "Final-Recipient: rfc822;%s\n" | |
5477 | "Status: %s\n", | |
5478 | action, pa->address, status); | |
5479 | } | |
5480 | ||
5481 | ||
44416341 JH |
5482 | |
5483 | /* When running in the test harness, there's an option that allows us to | |
5484 | fudge this time so as to get repeatability of the tests. Take the first | |
5485 | time off the list. In queue runs, the list pointer gets updated in the | |
5486 | calling process. */ | |
5487 | ||
5488 | int | |
5489 | test_harness_fudged_queue_time(int actual_time) | |
5490 | { | |
5491 | int qt; | |
5492 | if ( f.running_in_test_harness && *fudged_queue_times | |
5493 | && (qt = readconf_readtime(fudged_queue_times, '/', FALSE)) >= 0) | |
5494 | { | |
5495 | DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n", | |
5496 | fudged_queue_times); | |
5497 | return qt; | |
5498 | } | |
5499 | return actual_time; | |
5500 | } | |
5501 | ||
059ec3d9 PH |
5502 | /************************************************* |
5503 | * Deliver one message * | |
5504 | *************************************************/ | |
5505 | ||
5506 | /* This is the function which is called when a message is to be delivered. It | |
5507 | is passed the id of the message. It is possible that the message no longer | |
5508 | exists, if some other process has delivered it, and it is also possible that | |
5509 | the message is being worked on by another process, in which case the data file | |
5510 | will be locked. | |
5511 | ||
5512 | If no delivery is attempted for any of the above reasons, the function returns | |
5513 | DELIVER_NOT_ATTEMPTED. | |
5514 | ||
5515 | If the give_up flag is set true, do not attempt any deliveries, but instead | |
5516 | fail all outstanding addresses and return the message to the sender (or | |
5517 | whoever). | |
5518 | ||
5519 | A delivery operation has a process all to itself; we never deliver more than | |
5520 | one message in the same process. Therefore we needn't worry too much about | |
5521 | store leakage. | |
5522 | ||
92b0827a JH |
5523 | Liable to be called as root. |
5524 | ||
059ec3d9 PH |
5525 | Arguments: |
5526 | id the id of the message to be delivered | |
5527 | forced TRUE if delivery was forced by an administrator; this overrides | |
5528 | retry delays and causes a delivery to be tried regardless | |
5529 | give_up TRUE if an administrator has requested that delivery attempts | |
5530 | be abandoned | |
5531 | ||
5532 | Returns: When the global variable mua_wrapper is FALSE: | |
5533 | DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made | |
5534 | DELIVER_NOT_ATTEMPTED otherwise (see comment above) | |
5535 | When the global variable mua_wrapper is TRUE: | |
5536 | DELIVER_MUA_SUCCEEDED if delivery succeeded | |
5537 | DELIVER_MUA_FAILED if delivery failed | |
5538 | DELIVER_NOT_ATTEMPTED if not attempted (should not occur) | |
5539 | */ | |
5540 | ||
5541 | int | |
5542 | deliver_message(uschar *id, BOOL forced, BOOL give_up) | |
5543 | { | |
5544 | int i, rc; | |
5545 | int final_yield = DELIVER_ATTEMPTED_NORMAL; | |
5546 | time_t now = time(NULL); | |
5547 | address_item *addr_last = NULL; | |
5548 | uschar *filter_message = NULL; | |
059ec3d9 PH |
5549 | int process_recipients = RECIP_ACCEPT; |
5550 | open_db dbblock; | |
5551 | open_db *dbm_file; | |
faa05a93 | 5552 | extern int acl_where; |
9f01e50d | 5553 | uschar *info; |
059ec3d9 | 5554 | |
9f01e50d JH |
5555 | #ifdef MEASURE_TIMING |
5556 | report_time_since(×tamp_startup, US"delivery start"); /* testcase 0022, 2100 */ | |
5557 | #endif | |
5558 | ||
5559 | info = queue_run_pid == (pid_t)0 | |
d6c82d7b JH |
5560 | ? string_sprintf("delivering %s", id) |
5561 | : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid); | |
059ec3d9 PH |
5562 | |
5563 | /* If the D_process_info bit is on, set_process_info() will output debugging | |
5564 | information. If not, we want to show this initial information if D_deliver or | |
5565 | D_queue_run is set or in verbose mode. */ | |
5566 | ||
5567 | set_process_info("%s", info); | |
5568 | ||
d6c82d7b JH |
5569 | if ( !(debug_selector & D_process_info) |
5570 | && (debug_selector & (D_deliver|D_queue_run|D_v)) | |
5571 | ) | |
059ec3d9 PH |
5572 | debug_printf("%s\n", info); |
5573 | ||
5574 | /* Ensure that we catch any subprocesses that are created. Although Exim | |
5575 | sets SIG_DFL as its initial default, some routes through the code end up | |
5576 | here with it set to SIG_IGN - cases where a non-synchronous delivery process | |
5577 | has been forked, but no re-exec has been done. We use sigaction rather than | |
5578 | plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be | |
5579 | sure it is turned off. (There was a problem on AIX with this.) */ | |
5580 | ||
5581 | #ifdef SA_NOCLDWAIT | |
5582 | { | |
5583 | struct sigaction act; | |
5584 | act.sa_handler = SIG_DFL; | |
5585 | sigemptyset(&(act.sa_mask)); | |
5586 | act.sa_flags = 0; | |
5587 | sigaction(SIGCHLD, &act, NULL); | |
5588 | } | |
5589 | #else | |
5590 | signal(SIGCHLD, SIG_DFL); | |
5591 | #endif | |
5592 | ||
5593 | /* Make the forcing flag available for routers and transports, set up the | |
5594 | global message id field, and initialize the count for returned files and the | |
5595 | message size. This use of strcpy() is OK because the length id is checked when | |
5596 | it is obtained from a command line (the -M or -q options), and otherwise it is | |
5597 | known to be a valid message id. */ | |
5598 | ||
e30f4f43 JH |
5599 | if (id != message_id) |
5600 | Ustrcpy(message_id, id); | |
8768d548 | 5601 | f.deliver_force = forced; |
059ec3d9 PH |
5602 | return_count = 0; |
5603 | message_size = 0; | |
5604 | ||
5605 | /* Initialize some flags */ | |
5606 | ||
5607 | update_spool = FALSE; | |
5608 | remove_journal = TRUE; | |
5609 | ||
faa05a93 JH |
5610 | /* Set a known context for any ACLs we call via expansions */ |
5611 | acl_where = ACL_WHERE_DELIVERY; | |
5612 | ||
059ec3d9 PH |
5613 | /* Reset the random number generator, so that if several delivery processes are |
5614 | started from a queue runner that has already used random numbers (for sorting), | |
5615 | they don't all get the same sequence. */ | |
5616 | ||
5617 | random_seed = 0; | |
5618 | ||
5619 | /* Open and lock the message's data file. Exim locks on this one because the | |
5620 | header file may get replaced as it is re-written during the delivery process. | |
5621 | Any failures cause messages to be written to the log, except for missing files | |
5622 | while queue running - another process probably completed delivery. As part of | |
5623 | opening the data file, message_subdir gets set. */ | |
5624 | ||
789f8a4f | 5625 | if ((deliver_datafile = spool_open_datafile(id)) < 0) |
059ec3d9 PH |
5626 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5627 | ||
5628 | /* The value of message_size at this point has been set to the data length, | |
5629 | plus one for the blank line that notionally precedes the data. */ | |
5630 | ||
5631 | /* Now read the contents of the header file, which will set up the headers in | |
5632 | store, and also the list of recipients and the tree of non-recipients and | |
5633 | assorted flags. It updates message_size. If there is a reading or format error, | |
5634 | give up; if the message has been around for sufficiently long, remove it. */ | |
5635 | ||
059ec3d9 | 5636 | { |
41313d92 JH |
5637 | uschar * spoolname = string_sprintf("%s-H", id); |
5638 | if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK) | |
059ec3d9 | 5639 | { |
41313d92 JH |
5640 | if (errno == ERRNO_SPOOLFORMAT) |
5641 | { | |
5642 | struct stat statbuf; | |
5643 | if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""), | |
5644 | &statbuf) == 0) | |
5645 | log_write(0, LOG_MAIN, "Format error in spool file %s: " | |
5646 | "size=" OFF_T_FMT, spoolname, statbuf.st_size); | |
5647 | else | |
5648 | log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname); | |
5649 | } | |
5650 | else | |
5651 | log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname, | |
5652 | strerror(errno)); | |
059ec3d9 | 5653 | |
41313d92 JH |
5654 | /* If we managed to read the envelope data, received_time contains the |
5655 | time the message was received. Otherwise, we can calculate it from the | |
5656 | message id. */ | |
059ec3d9 | 5657 | |
41313d92 JH |
5658 | if (rc != spool_read_hdrerror) |
5659 | { | |
32dfdf8b JH |
5660 | received_time.tv_sec = received_time.tv_usec = 0; |
5661 | /*XXX subsec precision?*/ | |
41313d92 | 5662 | for (i = 0; i < 6; i++) |
32dfdf8b | 5663 | received_time.tv_sec = received_time.tv_sec * BASE_62 + tab62[id[i] - '0']; |
41313d92 | 5664 | } |
059ec3d9 | 5665 | |
41313d92 | 5666 | /* If we've had this malformed message too long, sling it. */ |
059ec3d9 | 5667 | |
32dfdf8b | 5668 | if (now - received_time.tv_sec > keep_malformed) |
41313d92 JH |
5669 | { |
5670 | Uunlink(spool_fname(US"msglog", message_subdir, id, US"")); | |
5671 | Uunlink(spool_fname(US"input", message_subdir, id, US"-D")); | |
5672 | Uunlink(spool_fname(US"input", message_subdir, id, US"-H")); | |
5673 | Uunlink(spool_fname(US"input", message_subdir, id, US"-J")); | |
5674 | log_write(0, LOG_MAIN, "Message removed because older than %s", | |
5675 | readconf_printtime(keep_malformed)); | |
5676 | } | |
059ec3d9 | 5677 | |
41313d92 JH |
5678 | (void)close(deliver_datafile); |
5679 | deliver_datafile = -1; | |
5680 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5681 | } | |
059ec3d9 PH |
5682 | } |
5683 | ||
5684 | /* The spool header file has been read. Look to see if there is an existing | |
5685 | journal file for this message. If there is, it means that a previous delivery | |
5686 | attempt crashed (program or host) before it could update the spool header file. | |
5687 | Read the list of delivered addresses from the journal and add them to the | |
5688 | nonrecipients tree. Then update the spool file. We can leave the journal in | |
5689 | existence, as it will get further successful deliveries added to it in this | |
5690 | run, and it will be deleted if this function gets to its end successfully. | |
5691 | Otherwise it might be needed again. */ | |
5692 | ||
059ec3d9 | 5693 | { |
41313d92 | 5694 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
92b0827a | 5695 | FILE * jread; |
41313d92 | 5696 | |
92b0827a JH |
5697 | if ( (journal_fd = Uopen(fname, O_RDWR|O_APPEND |
5698 | #ifdef O_CLOEXEC | |
5699 | | O_CLOEXEC | |
5700 | #endif | |
5701 | #ifdef O_NOFOLLOW | |
5702 | | O_NOFOLLOW | |
5703 | #endif | |
5704 | , SPOOL_MODE)) >= 0 | |
5705 | && lseek(journal_fd, 0, SEEK_SET) == 0 | |
5706 | && (jread = fdopen(journal_fd, "rb")) | |
5707 | ) | |
059ec3d9 | 5708 | { |
41313d92 JH |
5709 | while (Ufgets(big_buffer, big_buffer_size, jread)) |
5710 | { | |
5711 | int n = Ustrlen(big_buffer); | |
5712 | big_buffer[n-1] = 0; | |
5713 | tree_add_nonrecipient(big_buffer); | |
5714 | DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from " | |
5715 | "journal file\n", big_buffer); | |
5716 | } | |
92b0827a | 5717 | rewind(jread); |
c0741086 JH |
5718 | if ((journal_fd = dup(fileno(jread))) < 0) |
5719 | journal_fd = fileno(jread); | |
5720 | else | |
5721 | (void) fclose(jread); /* Try to not leak the FILE resource */ | |
5722 | ||
41313d92 JH |
5723 | /* Panic-dies on error */ |
5724 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
5725 | } | |
5726 | else if (errno != ENOENT) | |
5727 | { | |
5728 | log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: " | |
5729 | "%s", strerror(errno)); | |
5730 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
059ec3d9 | 5731 | } |
059ec3d9 | 5732 | |
41313d92 | 5733 | /* A null recipients list indicates some kind of disaster. */ |
059ec3d9 | 5734 | |
41313d92 JH |
5735 | if (!recipients_list) |
5736 | { | |
5737 | (void)close(deliver_datafile); | |
5738 | deliver_datafile = -1; | |
5739 | log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname); | |
5740 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5741 | } | |
059ec3d9 PH |
5742 | } |
5743 | ||
5744 | ||
5745 | /* Handle a message that is frozen. There are a number of different things that | |
5746 | can happen, but in the default situation, unless forced, no delivery is | |
5747 | attempted. */ | |
5748 | ||
8768d548 | 5749 | if (f.deliver_freeze) |
059ec3d9 | 5750 | { |
a7538db1 | 5751 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
059ec3d9 PH |
5752 | /* Moving to another directory removes the message from Exim's view. Other |
5753 | tools must be used to deal with it. Logging of this action happens in | |
5754 | spool_move_message() and its subfunctions. */ | |
5755 | ||
d6c82d7b JH |
5756 | if ( move_frozen_messages |
5757 | && spool_move_message(id, message_subdir, US"", US"F") | |
5758 | ) | |
059ec3d9 | 5759 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
a7538db1 | 5760 | #endif |
059ec3d9 PH |
5761 | |
5762 | /* For all frozen messages (bounces or not), timeout_frozen_after sets the | |
5763 | maximum time to keep messages that are frozen. Thaw if we reach it, with a | |
5764 | flag causing all recipients to be failed. The time is the age of the | |
5765 | message, not the time since freezing. */ | |
5766 | ||
5767 | if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after) | |
5768 | { | |
5769 | log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after"); | |
5770 | process_recipients = RECIP_FAIL_TIMEOUT; | |
5771 | } | |
5772 | ||
5773 | /* For bounce messages (and others with no sender), thaw if the error message | |
5774 | ignore timer is exceeded. The message will be discarded if this delivery | |
5775 | fails. */ | |
5776 | ||
10c50704 | 5777 | else if (!*sender_address && message_age >= ignore_bounce_errors_after) |
059ec3d9 | 5778 | log_write(0, LOG_MAIN, "Unfrozen by errmsg timer"); |
059ec3d9 | 5779 | |
ef213c3b PH |
5780 | /* If this is a bounce message, or there's no auto thaw, or we haven't |
5781 | reached the auto thaw time yet, and this delivery is not forced by an admin | |
5782 | user, do not attempt delivery of this message. Note that forced is set for | |
5783 | continuing messages down the same channel, in order to skip load checking and | |
5784 | ignore hold domains, but we don't want unfreezing in that case. */ | |
059ec3d9 PH |
5785 | |
5786 | else | |
5787 | { | |
d6c82d7b JH |
5788 | if ( ( sender_address[0] == 0 |
5789 | || auto_thaw <= 0 | |
5790 | || now <= deliver_frozen_at + auto_thaw | |
5791 | ) | |
8768d548 JH |
5792 | && ( !forced || !f.deliver_force_thaw |
5793 | || !f.admin_user || continue_hostname | |
d6c82d7b | 5794 | ) ) |
059ec3d9 | 5795 | { |
f1e894f3 | 5796 | (void)close(deliver_datafile); |
059ec3d9 PH |
5797 | deliver_datafile = -1; |
5798 | log_write(L_skip_delivery, LOG_MAIN, "Message is frozen"); | |
5799 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5800 | } | |
5801 | ||
5802 | /* If delivery was forced (by an admin user), assume a manual thaw. | |
5803 | Otherwise it's an auto thaw. */ | |
5804 | ||
5805 | if (forced) | |
5806 | { | |
8768d548 | 5807 | f.deliver_manual_thaw = TRUE; |
059ec3d9 PH |
5808 | log_write(0, LOG_MAIN, "Unfrozen by forced delivery"); |
5809 | } | |
5810 | else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw"); | |
5811 | } | |
5812 | ||
5813 | /* We get here if any of the rules for unfreezing have triggered. */ | |
5814 | ||
8768d548 | 5815 | f.deliver_freeze = FALSE; |
059ec3d9 PH |
5816 | update_spool = TRUE; |
5817 | } | |
5818 | ||
5819 | ||
5820 | /* Open the message log file if we are using them. This records details of | |
5821 | deliveries, deferments, and failures for the benefit of the mail administrator. | |
5822 | The log is not used by exim itself to track the progress of a message; that is | |
5823 | done by rewriting the header spool file. */ | |
5824 | ||
5825 | if (message_logs) | |
5826 | { | |
41313d92 JH |
5827 | uschar * fname = spool_fname(US"msglog", message_subdir, id, US""); |
5828 | uschar * error; | |
059ec3d9 PH |
5829 | int fd; |
5830 | ||
41313d92 | 5831 | if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0) |
059ec3d9 PH |
5832 | { |
5833 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error, | |
41313d92 | 5834 | fname, strerror(errno)); |
059ec3d9 PH |
5835 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5836 | } | |
5837 | ||
5838 | /* Make a C stream out of it. */ | |
5839 | ||
d6c82d7b | 5840 | if (!(message_log = fdopen(fd, "a"))) |
059ec3d9 PH |
5841 | { |
5842 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s", | |
41313d92 | 5843 | fname, strerror(errno)); |
059ec3d9 PH |
5844 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5845 | } | |
5846 | } | |
5847 | ||
5848 | ||
5849 | /* If asked to give up on a message, log who did it, and set the action for all | |
5850 | the addresses. */ | |
5851 | ||
5852 | if (give_up) | |
5853 | { | |
5854 | struct passwd *pw = getpwuid(real_uid); | |
d6c82d7b JH |
5855 | log_write(0, LOG_MAIN, "cancelled by %s", |
5856 | pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid)); | |
059ec3d9 PH |
5857 | process_recipients = RECIP_FAIL; |
5858 | } | |
5859 | ||
5860 | /* Otherwise, if there are too many Received: headers, fail all recipients. */ | |
5861 | ||
5862 | else if (received_count > received_headers_max) | |
5863 | process_recipients = RECIP_FAIL_LOOP; | |
5864 | ||
5865 | /* Otherwise, if a system-wide, address-independent message filter is | |
5866 | specified, run it now, except in the case when we are failing all recipients as | |
5867 | a result of timeout_frozen_after. If the system filter yields "delivered", then | |
5868 | ignore the true recipients of the message. Failure of the filter file is | |
5869 | logged, and the delivery attempt fails. */ | |
5870 | ||
d6c82d7b | 5871 | else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT) |
059ec3d9 PH |
5872 | { |
5873 | int rc; | |
5874 | int filtertype; | |
5875 | ugid_block ugid; | |
5876 | redirect_block redirect; | |
5877 | ||
5878 | if (system_filter_uid_set) | |
5879 | { | |
5880 | ugid.uid = system_filter_uid; | |
5881 | ugid.gid = system_filter_gid; | |
5882 | ugid.uid_set = ugid.gid_set = TRUE; | |
5883 | } | |
5884 | else | |
059ec3d9 | 5885 | ugid.uid_set = ugid.gid_set = FALSE; |
059ec3d9 PH |
5886 | |
5887 | return_path = sender_address; | |
8768d548 JH |
5888 | f.enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */ |
5889 | f.system_filtering = TRUE; | |
059ec3d9 PH |
5890 | |
5891 | /* Any error in the filter file causes a delivery to be abandoned. */ | |
5892 | ||
5893 | redirect.string = system_filter; | |
5894 | redirect.isfile = TRUE; | |
5895 | redirect.check_owner = redirect.check_group = FALSE; | |
5896 | redirect.owners = NULL; | |
5897 | redirect.owngroups = NULL; | |
5898 | redirect.pw = NULL; | |
5899 | redirect.modemask = 0; | |
5900 | ||
5901 | DEBUG(D_deliver|D_filter) debug_printf("running system filter\n"); | |
5902 | ||
5903 | rc = rda_interpret( | |
5904 | &redirect, /* Where the data is */ | |
5905 | RDO_DEFER | /* Turn on all the enabling options */ | |
5906 | RDO_FAIL | /* Leave off all the disabling options */ | |
5907 | RDO_FILTER | | |
5908 | RDO_FREEZE | | |
5909 | RDO_REALLOG | | |
5910 | RDO_REWRITE, | |
5911 | NULL, /* No :include: restriction (not used in filter) */ | |
5912 | NULL, /* No sieve vacation directory (not sieve!) */ | |
efd9a422 | 5913 | NULL, /* No sieve enotify mailto owner (not sieve!) */ |
e4a89c47 PH |
5914 | NULL, /* No sieve user address (not sieve!) */ |
5915 | NULL, /* No sieve subaddress (not sieve!) */ | |
059ec3d9 PH |
5916 | &ugid, /* uid/gid data */ |
5917 | &addr_new, /* Where to hang generated addresses */ | |
5918 | &filter_message, /* Where to put error message */ | |
5919 | NULL, /* Don't skip syntax errors */ | |
5920 | &filtertype, /* Will always be set to FILTER_EXIM for this call */ | |
5921 | US"system filter"); /* For error messages */ | |
5922 | ||
5923 | DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc); | |
5924 | ||
5925 | if (rc == FF_ERROR || rc == FF_NONEXIST) | |
5926 | { | |
f1e894f3 | 5927 | (void)close(deliver_datafile); |
059ec3d9 PH |
5928 | deliver_datafile = -1; |
5929 | log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s", | |
5930 | string_printing(filter_message)); | |
5931 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5932 | } | |
5933 | ||
5934 | /* Reset things. If the filter message is an empty string, which can happen | |
5935 | for a filter "fail" or "freeze" command with no text, reset it to NULL. */ | |
5936 | ||
8768d548 JH |
5937 | f.system_filtering = FALSE; |
5938 | f.enable_dollar_recipients = FALSE; | |
d6c82d7b | 5939 | if (filter_message && filter_message[0] == 0) filter_message = NULL; |
059ec3d9 PH |
5940 | |
5941 | /* Save the values of the system filter variables so that user filters | |
5942 | can use them. */ | |
5943 | ||
5944 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); | |
5945 | ||
5946 | /* The filter can request that delivery of the original addresses be | |
5947 | deferred. */ | |
5948 | ||
5949 | if (rc == FF_DEFER) | |
5950 | { | |
5951 | process_recipients = RECIP_DEFER; | |
5952 | deliver_msglog("Delivery deferred by system filter\n"); | |
5953 | log_write(0, LOG_MAIN, "Delivery deferred by system filter"); | |
5954 | } | |
5955 | ||
5956 | /* The filter can request that a message be frozen, but this does not | |
5957 | take place if the message has been manually thawed. In that case, we must | |
5958 | unset "delivered", which is forced by the "freeze" command to make -bF | |
5959 | work properly. */ | |
5960 | ||
8768d548 | 5961 | else if (rc == FF_FREEZE && !f.deliver_manual_thaw) |
059ec3d9 | 5962 | { |
8768d548 | 5963 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
5964 | deliver_frozen_at = time(NULL); |
5965 | process_recipients = RECIP_DEFER; | |
5966 | frozen_info = string_sprintf(" by the system filter%s%s", | |
d6c82d7b JH |
5967 | filter_message ? US": " : US"", |
5968 | filter_message ? filter_message : US""); | |
059ec3d9 PH |
5969 | } |
5970 | ||
5971 | /* The filter can request that a message be failed. The error message may be | |
5972 | quite long - it is sent back to the sender in the bounce - but we don't want | |
5973 | to fill up the log with repetitions of it. If it starts with << then the text | |
5974 | between << and >> is written to the log, with the rest left for the bounce | |
5975 | message. */ | |
5976 | ||
5977 | else if (rc == FF_FAIL) | |
5978 | { | |
5979 | uschar *colon = US""; | |
5980 | uschar *logmsg = US""; | |
5981 | int loglen = 0; | |
5982 | ||
5983 | process_recipients = RECIP_FAIL_FILTER; | |
5984 | ||
d6c82d7b | 5985 | if (filter_message) |
059ec3d9 PH |
5986 | { |
5987 | uschar *logend; | |
5988 | colon = US": "; | |
d6c82d7b JH |
5989 | if ( filter_message[0] == '<' |
5990 | && filter_message[1] == '<' | |
5991 | && (logend = Ustrstr(filter_message, ">>")) | |
5992 | ) | |
059ec3d9 PH |
5993 | { |
5994 | logmsg = filter_message + 2; | |
5995 | loglen = logend - logmsg; | |
5996 | filter_message = logend + 2; | |
5997 | if (filter_message[0] == 0) filter_message = NULL; | |
5998 | } | |
5999 | else | |
6000 | { | |
6001 | logmsg = filter_message; | |
6002 | loglen = Ustrlen(filter_message); | |
6003 | } | |
6004 | } | |
6005 | ||
6006 | log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen, | |
6007 | logmsg); | |
6008 | } | |
6009 | ||
6010 | /* Delivery can be restricted only to those recipients (if any) that the | |
6011 | filter specified. */ | |
6012 | ||
6013 | else if (rc == FF_DELIVERED) | |
6014 | { | |
6015 | process_recipients = RECIP_IGNORE; | |
d6c82d7b | 6016 | if (addr_new) |
059ec3d9 | 6017 | log_write(0, LOG_MAIN, "original recipients ignored (system filter)"); |
d6c82d7b JH |
6018 | else |
6019 | log_write(0, LOG_MAIN, "=> discarded (system filter)"); | |
059ec3d9 PH |
6020 | } |
6021 | ||
6022 | /* If any new addresses were created by the filter, fake up a "parent" | |
6023 | for them. This is necessary for pipes, etc., which are expected to have | |
6024 | parents, and it also gives some sensible logging for others. Allow | |
6025 | pipes, files, and autoreplies, and run them as the filter uid if set, | |
6026 | otherwise as the current uid. */ | |
6027 | ||
d6c82d7b | 6028 | if (addr_new) |
059ec3d9 | 6029 | { |
f3ebb786 JH |
6030 | int uid = system_filter_uid_set ? system_filter_uid : geteuid(); |
6031 | int gid = system_filter_gid_set ? system_filter_gid : getegid(); | |
059ec3d9 PH |
6032 | |
6033 | /* The text "system-filter" is tested in transport_set_up_command() and in | |
6034 | set_up_shell_command() in the pipe transport, to enable them to permit | |
6035 | $recipients, so don't change it here without also changing it there. */ | |
6036 | ||
6037 | address_item *p = addr_new; | |
6038 | address_item *parent = deliver_make_addr(US"system-filter", FALSE); | |
6039 | ||
6040 | parent->domain = string_copylc(qualify_domain_recipient); | |
6041 | parent->local_part = US"system-filter"; | |
6042 | ||
6043 | /* As part of this loop, we arrange for addr_last to end up pointing | |
6044 | at the final address. This is used if we go on to add addresses for the | |
6045 | original recipients. */ | |
6046 | ||
d6c82d7b | 6047 | while (p) |
059ec3d9 | 6048 | { |
82f90600 | 6049 | if (parent->child_count == USHRT_MAX) |
4362ff0d | 6050 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more " |
82f90600 | 6051 | "than %d delivery addresses", USHRT_MAX); |
059ec3d9 PH |
6052 | parent->child_count++; |
6053 | p->parent = parent; | |
6054 | ||
6055 | if (testflag(p, af_pfr)) | |
6056 | { | |
6057 | uschar *tpname; | |
6058 | uschar *type; | |
6059 | p->uid = uid; | |
6060 | p->gid = gid; | |
7eb0e5d2 JH |
6061 | setflag(p, af_uid_set); |
6062 | setflag(p, af_gid_set); | |
6063 | setflag(p, af_allow_file); | |
6064 | setflag(p, af_allow_pipe); | |
6065 | setflag(p, af_allow_reply); | |
059ec3d9 PH |
6066 | |
6067 | /* Find the name of the system filter's appropriate pfr transport */ | |
6068 | ||
6069 | if (p->address[0] == '|') | |
6070 | { | |
6071 | type = US"pipe"; | |
6072 | tpname = system_filter_pipe_transport; | |
6073 | address_pipe = p->address; | |
6074 | } | |
6075 | else if (p->address[0] == '>') | |
6076 | { | |
6077 | type = US"reply"; | |
6078 | tpname = system_filter_reply_transport; | |
6079 | } | |
6080 | else | |
6081 | { | |
6082 | if (p->address[Ustrlen(p->address)-1] == '/') | |
6083 | { | |
6084 | type = US"directory"; | |
6085 | tpname = system_filter_directory_transport; | |
6086 | } | |
6087 | else | |
6088 | { | |
6089 | type = US"file"; | |
6090 | tpname = system_filter_file_transport; | |
6091 | } | |
6092 | address_file = p->address; | |
6093 | } | |
6094 | ||
6095 | /* Now find the actual transport, first expanding the name. We have | |
6096 | set address_file or address_pipe above. */ | |
6097 | ||
d6c82d7b | 6098 | if (tpname) |
059ec3d9 PH |
6099 | { |
6100 | uschar *tmp = expand_string(tpname); | |
6101 | address_file = address_pipe = NULL; | |
d6c82d7b | 6102 | if (!tmp) |
059ec3d9 PH |
6103 | p->message = string_sprintf("failed to expand \"%s\" as a " |
6104 | "system filter transport name", tpname); | |
f3ebb786 JH |
6105 | if (is_tainted(tmp)) |
6106 | p->message = string_sprintf("attempt to used tainted value '%s' for" | |
6107 | "transport '%s' as a system filter", tmp, tpname); | |
059ec3d9 PH |
6108 | tpname = tmp; |
6109 | } | |
6110 | else | |
059ec3d9 PH |
6111 | p->message = string_sprintf("system_filter_%s_transport is unset", |
6112 | type); | |
059ec3d9 | 6113 | |
d6c82d7b | 6114 | if (tpname) |
059ec3d9 PH |
6115 | { |
6116 | transport_instance *tp; | |
d6c82d7b | 6117 | for (tp = transports; tp; tp = tp->next) |
059ec3d9 PH |
6118 | if (Ustrcmp(tp->name, tpname) == 0) |
6119 | { | |
6120 | p->transport = tp; | |
6121 | break; | |
6122 | } | |
d6c82d7b | 6123 | if (!tp) |
059ec3d9 PH |
6124 | p->message = string_sprintf("failed to find \"%s\" transport " |
6125 | "for system filter delivery", tpname); | |
6126 | } | |
6127 | ||
6128 | /* If we couldn't set up a transport, defer the delivery, putting the | |
6129 | error on the panic log as well as the main log. */ | |
6130 | ||
d6c82d7b | 6131 | if (!p->transport) |
059ec3d9 PH |
6132 | { |
6133 | address_item *badp = p; | |
6134 | p = p->next; | |
d6c82d7b | 6135 | if (!addr_last) addr_new = p; else addr_last->next = p; |
059ec3d9 | 6136 | badp->local_part = badp->address; /* Needed for log line */ |
ba936fb8 | 6137 | post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6138 | continue; |
6139 | } | |
6140 | } /* End of pfr handling */ | |
6141 | ||
6142 | /* Either a non-pfr delivery, or we found a transport */ | |
6143 | ||
6144 | DEBUG(D_deliver|D_filter) | |
6145 | debug_printf("system filter added %s\n", p->address); | |
6146 | ||
6147 | addr_last = p; | |
6148 | p = p->next; | |
6149 | } /* Loop through all addr_new addresses */ | |
6150 | } | |
6151 | } | |
6152 | ||
6153 | ||
6154 | /* Scan the recipients list, and for every one that is not in the non- | |
6155 | recipients tree, add an addr item to the chain of new addresses. If the pno | |
6156 | value is non-negative, we must set the onetime parent from it. This which | |
6157 | points to the relevant entry in the recipients list. | |
6158 | ||
6159 | This processing can be altered by the setting of the process_recipients | |
6160 | variable, which is changed if recipients are to be ignored, failed, or | |
6161 | deferred. This can happen as a result of system filter activity, or if the -Mg | |
6162 | option is used to fail all of them. | |
6163 | ||
6164 | Duplicate addresses are handled later by a different tree structure; we can't | |
6165 | just extend the non-recipients tree, because that will be re-written to the | |
6166 | spool if the message is deferred, and in any case there are casing | |
6167 | complications for local addresses. */ | |
6168 | ||
6169 | if (process_recipients != RECIP_IGNORE) | |
059ec3d9 | 6170 | for (i = 0; i < recipients_count; i++) |
d6c82d7b | 6171 | if (!tree_search(tree_nonrecipients, recipients_list[i].address)) |
059ec3d9 PH |
6172 | { |
6173 | recipient_item *r = recipients_list + i; | |
6174 | address_item *new = deliver_make_addr(r->address, FALSE); | |
d43cbe25 | 6175 | new->prop.errors_address = r->errors_to; |
8c5d388a | 6176 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
6177 | if ((new->prop.utf8_msg = message_smtputf8)) |
6178 | { | |
6179 | new->prop.utf8_downcvt = message_utf8_downconvert == 1; | |
6180 | new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1; | |
0ec7e948 JH |
6181 | DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n", |
6182 | new->prop.utf8_downcvt ? "yes" | |
6183 | : new->prop.utf8_downcvt_maybe ? "ifneeded" | |
6184 | : "no"); | |
3c8b3577 | 6185 | } |
7ade712c | 6186 | #endif |
059ec3d9 PH |
6187 | |
6188 | if (r->pno >= 0) | |
6189 | new->onetime_parent = recipients_list[r->pno].address; | |
6190 | ||
94431adb | 6191 | /* If DSN support is enabled, set the dsn flags and the original receipt |
44416341 JH |
6192 | to be passed on to other DSN enabled MTAs */ |
6193 | ||
6c1c3d1d WB |
6194 | new->dsn_flags = r->dsn_flags & rf_dsnflags; |
6195 | new->dsn_orcpt = r->orcpt; | |
df98a6ff | 6196 | DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: 0x%x\n", |
d011368a | 6197 | new->dsn_orcpt ? new->dsn_orcpt : US"", new->dsn_flags); |
6c1c3d1d | 6198 | |
059ec3d9 PH |
6199 | switch (process_recipients) |
6200 | { | |
6201 | /* RECIP_DEFER is set when a system filter freezes a message. */ | |
6202 | ||
6203 | case RECIP_DEFER: | |
1afce5bb MK |
6204 | new->next = addr_defer; |
6205 | addr_defer = new; | |
6206 | break; | |
059ec3d9 PH |
6207 | |
6208 | ||
6209 | /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail" | |
6210 | command. */ | |
6211 | ||
6212 | case RECIP_FAIL_FILTER: | |
1afce5bb MK |
6213 | new->message = |
6214 | filter_message ? filter_message : US"delivery cancelled"; | |
6215 | setflag(new, af_pass_message); | |
6216 | goto RECIP_QUEUE_FAILED; /* below */ | |
059ec3d9 PH |
6217 | |
6218 | ||
6219 | /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older | |
6220 | than the value in timeout_frozen_after. Treat non-bounce messages | |
6221 | similarly to -Mg; for bounce messages we just want to discard, so | |
6222 | don't put the address on the failed list. The timeout has already | |
6223 | been logged. */ | |
6224 | ||
6225 | case RECIP_FAIL_TIMEOUT: | |
1afce5bb MK |
6226 | new->message = US"delivery cancelled; message timed out"; |
6227 | goto RECIP_QUEUE_FAILED; /* below */ | |
059ec3d9 PH |
6228 | |
6229 | ||
6230 | /* RECIP_FAIL is set when -Mg has been used. */ | |
6231 | ||
6232 | case RECIP_FAIL: | |
1afce5bb MK |
6233 | new->message = US"delivery cancelled by administrator"; |
6234 | /* Fall through */ | |
059ec3d9 PH |
6235 | |
6236 | /* Common code for the failure cases above. If this is not a bounce | |
6237 | message, put the address on the failed list so that it is used to | |
6238 | create a bounce. Otherwise do nothing - this just discards the address. | |
6239 | The incident has already been logged. */ | |
6240 | ||
6241 | RECIP_QUEUE_FAILED: | |
1afce5bb MK |
6242 | if (sender_address[0]) |
6243 | { | |
6244 | new->next = addr_failed; | |
6245 | addr_failed = new; | |
6246 | } | |
059ec3d9 PH |
6247 | break; |
6248 | ||
6249 | ||
6250 | /* RECIP_FAIL_LOOP is set when there are too many Received: headers | |
6251 | in the message. Process each address as a routing failure; if this | |
6252 | is a bounce message, it will get frozen. */ | |
6253 | ||
6254 | case RECIP_FAIL_LOOP: | |
1afce5bb MK |
6255 | new->message = US"Too many \"Received\" headers - suspected mail loop"; |
6256 | post_process_one(new, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); | |
6257 | break; | |
059ec3d9 PH |
6258 | |
6259 | ||
6260 | /* Value should be RECIP_ACCEPT; take this as the safe default. */ | |
6261 | ||
6262 | default: | |
1afce5bb MK |
6263 | if (!addr_new) addr_new = new; else addr_last->next = new; |
6264 | addr_last = new; | |
6265 | break; | |
059ec3d9 | 6266 | } |
14a465c3 | 6267 | |
0cbf2b82 | 6268 | #ifndef DISABLE_EVENT |
7a9e0ae1 | 6269 | if (process_recipients != RECIP_ACCEPT && event_action) |
14a465c3 JH |
6270 | { |
6271 | uschar * save_local = deliver_localpart; | |
55414b25 | 6272 | const uschar * save_domain = deliver_domain; |
7ea1237c MK |
6273 | uschar * addr = new->address, * errmsg = NULL; |
6274 | int start, end, dom; | |
14a465c3 | 6275 | |
7ea1237c MK |
6276 | if (!parse_extract_address(addr, &errmsg, &start, &end, &dom, TRUE)) |
6277 | log_write(0, LOG_MAIN|LOG_PANIC, | |
6278 | "failed to parse address '%.100s': %s\n", addr, errmsg); | |
6279 | else | |
6280 | { | |
6281 | deliver_localpart = | |
6282 | string_copyn(addr+start, dom ? (dom-1) - start : end - start); | |
6283 | deliver_domain = dom ? CUS string_copyn(addr+dom, end - dom) : CUS""; | |
14a465c3 | 6284 | |
7ea1237c | 6285 | event_raise(event_action, US"msg:fail:internal", new->message); |
14a465c3 | 6286 | |
7ea1237c MK |
6287 | deliver_localpart = save_local; |
6288 | deliver_domain = save_domain; | |
6289 | } | |
14a465c3 JH |
6290 | } |
6291 | #endif | |
059ec3d9 | 6292 | } |
059ec3d9 PH |
6293 | |
6294 | DEBUG(D_deliver) | |
6295 | { | |
059ec3d9 | 6296 | debug_printf("Delivery address list:\n"); |
d7978c0f | 6297 | for (address_item * p = addr_new; p; p = p->next) |
d6c82d7b JH |
6298 | debug_printf(" %s %s\n", p->address, |
6299 | p->onetime_parent ? p->onetime_parent : US""); | |
059ec3d9 PH |
6300 | } |
6301 | ||
6302 | /* Set up the buffers used for copying over the file when delivering. */ | |
6303 | ||
6304 | deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE); | |
6305 | deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE); | |
6306 | ||
6307 | ||
6308 | ||
6309 | /* Until there are no more new addresses, handle each one as follows: | |
6310 | ||
6311 | . If this is a generated address (indicated by the presence of a parent | |
6312 | pointer) then check to see whether it is a pipe, file, or autoreply, and | |
6313 | if so, handle it directly here. The router that produced the address will | |
6314 | have set the allow flags into the address, and also set the uid/gid required. | |
6315 | Having the routers generate new addresses and then checking them here at | |
6316 | the outer level is tidier than making each router do the checking, and | |
6317 | means that routers don't need access to the failed address queue. | |
6318 | ||
6319 | . Break up the address into local part and domain, and make lowercased | |
6320 | versions of these strings. We also make unquoted versions of the local part. | |
6321 | ||
6322 | . Handle the percent hack for those domains for which it is valid. | |
6323 | ||
6324 | . For child addresses, determine if any of the parents have the same address. | |
6325 | If so, generate a different string for previous delivery checking. Without | |
6326 | this code, if the address spqr generates spqr via a forward or alias file, | |
6327 | delivery of the generated spqr stops further attempts at the top level spqr, | |
6328 | which is not what is wanted - it may have generated other addresses. | |
6329 | ||
6330 | . Check on the retry database to see if routing was previously deferred, but | |
6331 | only if in a queue run. Addresses that are to be routed are put on the | |
6332 | addr_route chain. Addresses that are to be deferred are put on the | |
6333 | addr_defer chain. We do all the checking first, so as not to keep the | |
6334 | retry database open any longer than necessary. | |
6335 | ||
6336 | . Now we run the addresses through the routers. A router may put the address | |
6337 | on either the addr_local or the addr_remote chain for local or remote | |
6338 | delivery, respectively, or put it on the addr_failed chain if it is | |
6339 | undeliveable, or it may generate child addresses and put them on the | |
6340 | addr_new chain, or it may defer an address. All the chain anchors are | |
6341 | passed as arguments so that the routers can be called for verification | |
6342 | purposes as well. | |
6343 | ||
6344 | . If new addresses have been generated by the routers, da capo. | |
6345 | */ | |
6346 | ||
8768d548 | 6347 | f.header_rewritten = FALSE; /* No headers rewritten yet */ |
d6c82d7b | 6348 | while (addr_new) /* Loop until all addresses dealt with */ |
059ec3d9 PH |
6349 | { |
6350 | address_item *addr, *parent; | |
059ec3d9 PH |
6351 | |
6352 | /* Failure to open the retry database is treated the same as if it does | |
6353 | not exist. In both cases, dbm_file is NULL. */ | |
6354 | ||
b10c87b3 | 6355 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE, TRUE))) |
059ec3d9 PH |
6356 | DEBUG(D_deliver|D_retry|D_route|D_hints_lookup) |
6357 | debug_printf("no retry data available\n"); | |
059ec3d9 PH |
6358 | |
6359 | /* Scan the current batch of new addresses, to handle pipes, files and | |
6360 | autoreplies, and determine which others are ready for routing. */ | |
6361 | ||
d6c82d7b | 6362 | while (addr_new) |
059ec3d9 PH |
6363 | { |
6364 | int rc; | |
6365 | uschar *p; | |
6366 | tree_node *tnode; | |
6367 | dbdata_retry *domain_retry_record; | |
6368 | dbdata_retry *address_retry_record; | |
6369 | ||
6370 | addr = addr_new; | |
6371 | addr_new = addr->next; | |
6372 | ||
6373 | DEBUG(D_deliver|D_retry|D_route) | |
6374 | { | |
6375 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); | |
6376 | debug_printf("Considering: %s\n", addr->address); | |
6377 | } | |
6378 | ||
6379 | /* Handle generated address that is a pipe or a file or an autoreply. */ | |
6380 | ||
6381 | if (testflag(addr, af_pfr)) | |
6382 | { | |
424a1c63 PH |
6383 | /* If an autoreply in a filter could not generate a syntactically valid |
6384 | address, give up forthwith. Set af_ignore_error so that we don't try to | |
6385 | generate a bounce. */ | |
6386 | ||
6387 | if (testflag(addr, af_bad_reply)) | |
6388 | { | |
6389 | addr->basic_errno = ERRNO_BADADDRESS2; | |
6390 | addr->local_part = addr->address; | |
6391 | addr->message = | |
6392 | US"filter autoreply generated syntactically invalid recipient"; | |
7eb0e5d2 | 6393 | addr->prop.ignore_error = TRUE; |
ba936fb8 | 6394 | (void) post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
424a1c63 PH |
6395 | continue; /* with the next new address */ |
6396 | } | |
059ec3d9 PH |
6397 | |
6398 | /* If two different users specify delivery to the same pipe or file or | |
6399 | autoreply, there should be two different deliveries, so build a unique | |
6400 | string that incorporates the original address, and use this for | |
6401 | duplicate testing and recording delivery, and also for retrying. */ | |
6402 | ||
6403 | addr->unique = | |
424a1c63 PH |
6404 | string_sprintf("%s:%s", addr->address, addr->parent->unique + |
6405 | (testflag(addr->parent, af_homonym)? 3:0)); | |
059ec3d9 PH |
6406 | |
6407 | addr->address_retry_key = addr->domain_retry_key = | |
6408 | string_sprintf("T:%s", addr->unique); | |
6409 | ||
6410 | /* If a filter file specifies two deliveries to the same pipe or file, | |
6411 | we want to de-duplicate, but this is probably not wanted for two mail | |
6412 | commands to the same address, where probably both should be delivered. | |
6413 | So, we have to invent a different unique string in that case. Just | |
6414 | keep piling '>' characters on the front. */ | |
6415 | ||
6416 | if (addr->address[0] == '>') | |
d6c82d7b | 6417 | while (tree_search(tree_duplicates, addr->unique)) |
059ec3d9 | 6418 | addr->unique = string_sprintf(">%s", addr->unique); |
059ec3d9 | 6419 | |
d6c82d7b | 6420 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
059ec3d9 PH |
6421 | { |
6422 | DEBUG(D_deliver|D_route) | |
6423 | debug_printf("%s is a duplicate address: discarded\n", addr->address); | |
6424 | addr->dupof = tnode->data.ptr; | |
6425 | addr->next = addr_duplicate; | |
6426 | addr_duplicate = addr; | |
6427 | continue; | |
6428 | } | |
6429 | ||
6430 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6431 | ||
6432 | /* Check for previous delivery */ | |
6433 | ||
d6c82d7b | 6434 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6435 | { |
6436 | DEBUG(D_deliver|D_route) | |
6437 | debug_printf("%s was previously delivered: discarded\n", addr->address); | |
6438 | child_done(addr, tod_stamp(tod_log)); | |
6439 | continue; | |
6440 | } | |
6441 | ||
6442 | /* Save for checking future duplicates */ | |
6443 | ||
6444 | tree_add_duplicate(addr->unique, addr); | |
6445 | ||
6446 | /* Set local part and domain */ | |
6447 | ||
6448 | addr->local_part = addr->address; | |
6449 | addr->domain = addr->parent->domain; | |
6450 | ||
6451 | /* Ensure that the delivery is permitted. */ | |
6452 | ||
6453 | if (testflag(addr, af_file)) | |
6454 | { | |
6455 | if (!testflag(addr, af_allow_file)) | |
6456 | { | |
6457 | addr->basic_errno = ERRNO_FORBIDFILE; | |
6458 | addr->message = US"delivery to file forbidden"; | |
ba936fb8 | 6459 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6460 | continue; /* with the next new address */ |
6461 | } | |
6462 | } | |
6463 | else if (addr->address[0] == '|') | |
6464 | { | |
6465 | if (!testflag(addr, af_allow_pipe)) | |
6466 | { | |
6467 | addr->basic_errno = ERRNO_FORBIDPIPE; | |
6468 | addr->message = US"delivery to pipe forbidden"; | |
ba936fb8 | 6469 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6470 | continue; /* with the next new address */ |
6471 | } | |
6472 | } | |
6473 | else if (!testflag(addr, af_allow_reply)) | |
6474 | { | |
6475 | addr->basic_errno = ERRNO_FORBIDREPLY; | |
6476 | addr->message = US"autoreply forbidden"; | |
ba936fb8 | 6477 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6478 | continue; /* with the next new address */ |
6479 | } | |
6480 | ||
6481 | /* If the errno field is already set to BADTRANSPORT, it indicates | |
6482 | failure to expand a transport string, or find the associated transport, | |
6483 | or an unset transport when one is required. Leave this test till now so | |
6484 | that the forbid errors are given in preference. */ | |
6485 | ||
6486 | if (addr->basic_errno == ERRNO_BADTRANSPORT) | |
6487 | { | |
ba936fb8 | 6488 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6489 | continue; |
6490 | } | |
6491 | ||
6492 | /* Treat /dev/null as a special case and abandon the delivery. This | |
6493 | avoids having to specify a uid on the transport just for this case. | |
6494 | Arrange for the transport name to be logged as "**bypassed**". */ | |
6495 | ||
6496 | if (Ustrcmp(addr->address, "/dev/null") == 0) | |
6497 | { | |
6498 | uschar *save = addr->transport->name; | |
6499 | addr->transport->name = US"**bypassed**"; | |
ba936fb8 | 6500 | (void)post_process_one(addr, OK, LOG_MAIN, EXIM_DTYPE_TRANSPORT, '='); |
059ec3d9 PH |
6501 | addr->transport->name = save; |
6502 | continue; /* with the next new address */ | |
6503 | } | |
6504 | ||
6505 | /* Pipe, file, or autoreply delivery is to go ahead as a normal local | |
6506 | delivery. */ | |
6507 | ||
6508 | DEBUG(D_deliver|D_route) | |
6509 | debug_printf("queued for %s transport\n", addr->transport->name); | |
6510 | addr->next = addr_local; | |
6511 | addr_local = addr; | |
6512 | continue; /* with the next new address */ | |
6513 | } | |
6514 | ||
6515 | /* Handle normal addresses. First, split up into local part and domain, | |
6516 | handling the %-hack if necessary. There is the possibility of a defer from | |
6517 | a lookup in percent_hack_domains. */ | |
6518 | ||
6519 | if ((rc = deliver_split_address(addr)) == DEFER) | |
6520 | { | |
6521 | addr->message = US"cannot check percent_hack_domains"; | |
6522 | addr->basic_errno = ERRNO_LISTDEFER; | |
ba936fb8 | 6523 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
059ec3d9 PH |
6524 | continue; |
6525 | } | |
6526 | ||
6527 | /* Check to see if the domain is held. If so, proceed only if the | |
6528 | delivery was forced by hand. */ | |
6529 | ||
6530 | deliver_domain = addr->domain; /* set $domain */ | |
d6c82d7b JH |
6531 | if ( !forced && hold_domains |
6532 | && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0, | |
059ec3d9 | 6533 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, |
d6c82d7b JH |
6534 | NULL)) != FAIL |
6535 | ) | |
059ec3d9 PH |
6536 | { |
6537 | if (rc == DEFER) | |
6538 | { | |
6539 | addr->message = US"hold_domains lookup deferred"; | |
6540 | addr->basic_errno = ERRNO_LISTDEFER; | |
6541 | } | |
6542 | else | |
6543 | { | |
6544 | addr->message = US"domain is held"; | |
6545 | addr->basic_errno = ERRNO_HELD; | |
6546 | } | |
ba936fb8 | 6547 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
059ec3d9 PH |
6548 | continue; |
6549 | } | |
6550 | ||
6551 | /* Now we can check for duplicates and previously delivered addresses. In | |
6552 | order to do this, we have to generate a "unique" value for each address, | |
6553 | because there may be identical actual addresses in a line of descendents. | |
6554 | The "unique" field is initialized to the same value as the "address" field, | |
6555 | but gets changed here to cope with identically-named descendents. */ | |
6556 | ||
d6c82d7b | 6557 | for (parent = addr->parent; parent; parent = parent->parent) |
059ec3d9 PH |
6558 | if (strcmpic(addr->address, parent->address) == 0) break; |
6559 | ||
6560 | /* If there's an ancestor with the same name, set the homonym flag. This | |
6561 | influences how deliveries are recorded. Then add a prefix on the front of | |
6562 | the unique address. We use \n\ where n starts at 0 and increases each time. | |
6563 | It is unlikely to pass 9, but if it does, it may look odd but will still | |
6564 | work. This means that siblings or cousins with the same names are treated | |
6565 | as duplicates, which is what we want. */ | |
6566 | ||
d6c82d7b | 6567 | if (parent) |
059ec3d9 PH |
6568 | { |
6569 | setflag(addr, af_homonym); | |
6570 | if (parent->unique[0] != '\\') | |
6571 | addr->unique = string_sprintf("\\0\\%s", addr->address); | |
6572 | else | |
6573 | addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1, | |
6574 | addr->address); | |
6575 | } | |
6576 | ||
6577 | /* Ensure that the domain in the unique field is lower cased, because | |
6578 | domains are always handled caselessly. */ | |
6579 | ||
6580 | p = Ustrrchr(addr->unique, '@'); | |
6581 | while (*p != 0) { *p = tolower(*p); p++; } | |
6582 | ||
6583 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6584 | ||
d6c82d7b | 6585 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6586 | { |
6587 | DEBUG(D_deliver|D_route) | |
6588 | debug_printf("%s was previously delivered: discarded\n", addr->unique); | |
6589 | child_done(addr, tod_stamp(tod_log)); | |
6590 | continue; | |
6591 | } | |
6592 | ||
059ec3d9 | 6593 | /* Get the routing retry status, saving the two retry keys (with and |
48c7f9e2 PH |
6594 | without the local part) for subsequent use. If there is no retry record for |
6595 | the standard address routing retry key, we look for the same key with the | |
6596 | sender attached, because this form is used by the smtp transport after a | |
6597 | 4xx response to RCPT when address_retry_include_sender is true. */ | |
059ec3d9 PH |
6598 | |
6599 | addr->domain_retry_key = string_sprintf("R:%s", addr->domain); | |
6600 | addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part, | |
6601 | addr->domain); | |
6602 | ||
d6c82d7b | 6603 | if (dbm_file) |
059ec3d9 PH |
6604 | { |
6605 | domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key); | |
d6c82d7b JH |
6606 | if ( domain_retry_record |
6607 | && now - domain_retry_record->time_stamp > retry_data_expire | |
6608 | ) | |
de6f74f2 JH |
6609 | { |
6610 | DEBUG(D_deliver|D_retry) | |
6611 | debug_printf("domain retry record present but expired\n"); | |
48c7f9e2 | 6612 | domain_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6613 | } |
059ec3d9 PH |
6614 | |
6615 | address_retry_record = dbfn_read(dbm_file, addr->address_retry_key); | |
d6c82d7b JH |
6616 | if ( address_retry_record |
6617 | && now - address_retry_record->time_stamp > retry_data_expire | |
6618 | ) | |
de6f74f2 JH |
6619 | { |
6620 | DEBUG(D_deliver|D_retry) | |
6621 | debug_printf("address retry record present but expired\n"); | |
48c7f9e2 | 6622 | address_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6623 | } |
48c7f9e2 | 6624 | |
d6c82d7b | 6625 | if (!address_retry_record) |
48c7f9e2 | 6626 | { |
09945f1e | 6627 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
48c7f9e2 PH |
6628 | sender_address); |
6629 | address_retry_record = dbfn_read(dbm_file, altkey); | |
d6c82d7b JH |
6630 | if ( address_retry_record |
6631 | && now - address_retry_record->time_stamp > retry_data_expire) | |
de6f74f2 JH |
6632 | { |
6633 | DEBUG(D_deliver|D_retry) | |
6634 | debug_printf("address<sender> retry record present but expired\n"); | |
48c7f9e2 | 6635 | address_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6636 | } |
48c7f9e2 | 6637 | } |
059ec3d9 | 6638 | } |
d6c82d7b JH |
6639 | else |
6640 | domain_retry_record = address_retry_record = NULL; | |
059ec3d9 PH |
6641 | |
6642 | DEBUG(D_deliver|D_retry) | |
6643 | { | |
d6c82d7b | 6644 | if (!domain_retry_record) |
de6f74f2 JH |
6645 | debug_printf("no domain retry record\n"); |
6646 | else | |
6647 | debug_printf("have domain retry record; next_try = now%+d\n", | |
6648 | f.running_in_test_harness ? 0 : | |
6649 | (int)(domain_retry_record->next_try - now)); | |
6650 | ||
d6c82d7b | 6651 | if (!address_retry_record) |
de6f74f2 JH |
6652 | debug_printf("no address retry record\n"); |
6653 | else | |
6654 | debug_printf("have address retry record; next_try = now%+d\n", | |
6655 | f.running_in_test_harness ? 0 : | |
6656 | (int)(address_retry_record->next_try - now)); | |
059ec3d9 PH |
6657 | } |
6658 | ||
6659 | /* If we are sending a message down an existing SMTP connection, we must | |
6660 | assume that the message which created the connection managed to route | |
6661 | an address to that connection. We do not want to run the risk of taking | |
6662 | a long time over routing here, because if we do, the server at the other | |
6663 | end of the connection may time it out. This is especially true for messages | |
6664 | with lots of addresses. For this kind of delivery, queue_running is not | |
6665 | set, so we would normally route all addresses. We take a pragmatic approach | |
6666 | and defer routing any addresses that have any kind of domain retry record. | |
6667 | That is, we don't even look at their retry times. It doesn't matter if this | |
6668 | doesn't work occasionally. This is all just an optimization, after all. | |
6669 | ||
6670 | The reason for not doing the same for address retries is that they normally | |
6671 | arise from 4xx responses, not DNS timeouts. */ | |
6672 | ||
d6c82d7b | 6673 | if (continue_hostname && domain_retry_record) |
059ec3d9 PH |
6674 | { |
6675 | addr->message = US"reusing SMTP connection skips previous routing defer"; | |
6676 | addr->basic_errno = ERRNO_RRETRY; | |
ba936fb8 | 6677 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
de6f74f2 JH |
6678 | |
6679 | addr->message = domain_retry_record->text; | |
6680 | setflag(addr, af_pass_message); | |
059ec3d9 PH |
6681 | } |
6682 | ||
f6c332bd PH |
6683 | /* If we are in a queue run, defer routing unless there is no retry data or |
6684 | we've passed the next retry time, or this message is forced. In other | |
6685 | words, ignore retry data when not in a queue run. | |
6686 | ||
6687 | However, if the domain retry time has expired, always allow the routing | |
6688 | attempt. If it fails again, the address will be failed. This ensures that | |
059ec3d9 PH |
6689 | each address is routed at least once, even after long-term routing |
6690 | failures. | |
6691 | ||
6692 | If there is an address retry, check that too; just wait for the next | |
6693 | retry time. This helps with the case when the temporary error on the | |
6694 | address was really message-specific rather than address specific, since | |
f6c332bd PH |
6695 | it allows other messages through. |
6696 | ||
6697 | We also wait for the next retry time if this is a message sent down an | |
6698 | existing SMTP connection (even though that will be forced). Otherwise there | |
6699 | will be far too many attempts for an address that gets a 4xx error. In | |
6700 | fact, after such an error, we should not get here because, the host should | |
6701 | not be remembered as one this message needs. However, there was a bug that | |
ba9af0af TF |
6702 | used to cause this to happen, so it is best to be on the safe side. |
6703 | ||
1ddeb334 TF |
6704 | Even if we haven't reached the retry time in the hints, there is one more |
6705 | check to do, which is for the ultimate address timeout. We only do this | |
6706 | check if there is an address retry record and there is not a domain retry | |
6707 | record; this implies that previous attempts to handle the address had the | |
6708 | retry_use_local_parts option turned on. We use this as an approximation | |
6709 | for the destination being like a local delivery, for example delivery over | |
6710 | LMTP to an IMAP message store. In this situation users are liable to bump | |
6711 | into their quota and thereby have intermittently successful deliveries, | |
6712 | which keep the retry record fresh, which can lead to us perpetually | |
6713 | deferring messages. */ | |
059ec3d9 | 6714 | |
8768d548 | 6715 | else if ( ( f.queue_running && !f.deliver_force |
d6c82d7b JH |
6716 | || continue_hostname |
6717 | ) | |
6718 | && ( ( domain_retry_record | |
6719 | && now < domain_retry_record->next_try | |
6720 | && !domain_retry_record->expired | |
6721 | ) | |
6722 | || ( address_retry_record | |
6723 | && now < address_retry_record->next_try | |
6724 | ) ) | |
6725 | && ( domain_retry_record | |
6726 | || !address_retry_record | |
6727 | || !retry_ultimate_address_timeout(addr->address_retry_key, | |
6728 | addr->domain, address_retry_record, now) | |
6729 | ) ) | |
059ec3d9 PH |
6730 | { |
6731 | addr->message = US"retry time not reached"; | |
6732 | addr->basic_errno = ERRNO_RRETRY; | |
ba936fb8 | 6733 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
de6f74f2 JH |
6734 | |
6735 | /* For remote-retry errors (here and just above) that we've not yet | |
81a559c8 | 6736 | hit the retry time, use the error recorded in the retry database |
de6f74f2 JH |
6737 | as info in the warning message. This lets us send a message even |
6738 | when we're not failing on a fresh attempt. We assume that this | |
6739 | info is not sensitive. */ | |
6740 | ||
6741 | addr->message = domain_retry_record | |
6742 | ? domain_retry_record->text : address_retry_record->text; | |
6743 | setflag(addr, af_pass_message); | |
059ec3d9 PH |
6744 | } |
6745 | ||
6746 | /* The domain is OK for routing. Remember if retry data exists so it | |
6747 | can be cleaned up after a successful delivery. */ | |
6748 | ||
6749 | else | |
6750 | { | |
d6c82d7b | 6751 | if (domain_retry_record || address_retry_record) |
059ec3d9 PH |
6752 | setflag(addr, af_dr_retry_exists); |
6753 | addr->next = addr_route; | |
6754 | addr_route = addr; | |
6755 | DEBUG(D_deliver|D_route) | |
6756 | debug_printf("%s: queued for routing\n", addr->address); | |
6757 | } | |
6758 | } | |
6759 | ||
6760 | /* The database is closed while routing is actually happening. Requests to | |
6761 | update it are put on a chain and all processed together at the end. */ | |
6762 | ||
d6c82d7b | 6763 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
6764 | |
6765 | /* If queue_domains is set, we don't even want to try routing addresses in | |
6766 | those domains. During queue runs, queue_domains is forced to be unset. | |
6767 | Optimize by skipping this pass through the addresses if nothing is set. */ | |
6768 | ||
8768d548 | 6769 | if (!f.deliver_force && queue_domains) |
059ec3d9 PH |
6770 | { |
6771 | address_item *okaddr = NULL; | |
d6c82d7b | 6772 | while (addr_route) |
059ec3d9 PH |
6773 | { |
6774 | address_item *addr = addr_route; | |
6775 | addr_route = addr->next; | |
6776 | ||
6777 | deliver_domain = addr->domain; /* set $domain */ | |
55414b25 | 6778 | if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0, |
059ec3d9 PH |
6779 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) |
6780 | != OK) | |
059ec3d9 PH |
6781 | if (rc == DEFER) |
6782 | { | |
6783 | addr->basic_errno = ERRNO_LISTDEFER; | |
6784 | addr->message = US"queue_domains lookup deferred"; | |
ba936fb8 | 6785 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6786 | } |
6787 | else | |
6788 | { | |
6789 | addr->next = okaddr; | |
6790 | okaddr = addr; | |
6791 | } | |
059ec3d9 PH |
6792 | else |
6793 | { | |
6794 | addr->basic_errno = ERRNO_QUEUE_DOMAIN; | |
6795 | addr->message = US"domain is in queue_domains"; | |
ba936fb8 | 6796 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6797 | } |
6798 | } | |
6799 | ||
6800 | addr_route = okaddr; | |
6801 | } | |
6802 | ||
6803 | /* Now route those addresses that are not deferred. */ | |
6804 | ||
d6c82d7b | 6805 | while (addr_route) |
059ec3d9 PH |
6806 | { |
6807 | int rc; | |
6808 | address_item *addr = addr_route; | |
55414b25 | 6809 | const uschar *old_domain = addr->domain; |
059ec3d9 PH |
6810 | uschar *old_unique = addr->unique; |
6811 | addr_route = addr->next; | |
6812 | addr->next = NULL; | |
6813 | ||
6814 | /* Just in case some router parameter refers to it. */ | |
6815 | ||
d6c82d7b JH |
6816 | if (!(return_path = addr->prop.errors_address)) |
6817 | return_path = sender_address; | |
059ec3d9 PH |
6818 | |
6819 | /* If a router defers an address, add a retry item. Whether or not to | |
6820 | use the local part in the key is a property of the router. */ | |
6821 | ||
6822 | if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new, | |
6823 | &addr_succeed, v_none)) == DEFER) | |
d6c82d7b JH |
6824 | retry_add_item(addr, |
6825 | addr->router->retry_use_local_part | |
f3ebb786 JH |
6826 | ? string_sprintf("R:%s@%s", addr->local_part, addr->domain) |
6827 | : string_sprintf("R:%s", addr->domain), | |
d6c82d7b | 6828 | 0); |
059ec3d9 PH |
6829 | |
6830 | /* Otherwise, if there is an existing retry record in the database, add | |
09945f1e PH |
6831 | retry items to delete both forms. We must also allow for the possibility |
6832 | of a routing retry that includes the sender address. Since the domain might | |
6833 | have been rewritten (expanded to fully qualified) as a result of routing, | |
6834 | ensure that the rewritten form is also deleted. */ | |
059ec3d9 PH |
6835 | |
6836 | else if (testflag(addr, af_dr_retry_exists)) | |
6837 | { | |
09945f1e PH |
6838 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
6839 | sender_address); | |
6840 | retry_add_item(addr, altkey, rf_delete); | |
059ec3d9 PH |
6841 | retry_add_item(addr, addr->address_retry_key, rf_delete); |
6842 | retry_add_item(addr, addr->domain_retry_key, rf_delete); | |
6843 | if (Ustrcmp(addr->domain, old_domain) != 0) | |
6844 | retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete); | |
6845 | } | |
6846 | ||
6847 | /* DISCARD is given for :blackhole: and "seen finish". The event has been | |
6848 | logged, but we need to ensure the address (and maybe parents) is marked | |
6849 | done. */ | |
6850 | ||
6851 | if (rc == DISCARD) | |
6852 | { | |
6853 | address_done(addr, tod_stamp(tod_log)); | |
6854 | continue; /* route next address */ | |
6855 | } | |
6856 | ||
6857 | /* The address is finished with (failed or deferred). */ | |
6858 | ||
6859 | if (rc != OK) | |
6860 | { | |
ba936fb8 | 6861 | (void)post_process_one(addr, rc, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6862 | continue; /* route next address */ |
6863 | } | |
6864 | ||
6865 | /* The address has been routed. If the router changed the domain, it will | |
6866 | also have changed the unique address. We have to test whether this address | |
6867 | has already been delivered, because it's the unique address that finally | |
6868 | gets recorded. */ | |
6869 | ||
d6c82d7b JH |
6870 | if ( addr->unique != old_unique |
6871 | && tree_search(tree_nonrecipients, addr->unique) != 0 | |
6872 | ) | |
059ec3d9 PH |
6873 | { |
6874 | DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: " | |
6875 | "discarded\n", addr->address); | |
6876 | if (addr_remote == addr) addr_remote = addr->next; | |
6877 | else if (addr_local == addr) addr_local = addr->next; | |
6878 | } | |
6879 | ||
6880 | /* If the router has same_domain_copy_routing set, we are permitted to copy | |
6881 | the routing for any other addresses with the same domain. This is an | |
6882 | optimisation to save repeated DNS lookups for "standard" remote domain | |
6883 | routing. The option is settable only on routers that generate host lists. | |
6884 | We play it very safe, and do the optimization only if the address is routed | |
6885 | to a remote transport, there are no header changes, and the domain was not | |
6886 | modified by the router. */ | |
6887 | ||
d6c82d7b JH |
6888 | if ( addr_remote == addr |
6889 | && addr->router->same_domain_copy_routing | |
6890 | && !addr->prop.extra_headers | |
6891 | && !addr->prop.remove_headers | |
6892 | && old_domain == addr->domain | |
6893 | ) | |
059ec3d9 PH |
6894 | { |
6895 | address_item **chain = &addr_route; | |
d6c82d7b | 6896 | while (*chain) |
059ec3d9 PH |
6897 | { |
6898 | address_item *addr2 = *chain; | |
6899 | if (Ustrcmp(addr2->domain, addr->domain) != 0) | |
6900 | { | |
6901 | chain = &(addr2->next); | |
6902 | continue; | |
6903 | } | |
6904 | ||
6905 | /* Found a suitable address; take it off the routing list and add it to | |
6906 | the remote delivery list. */ | |
6907 | ||
6908 | *chain = addr2->next; | |
6909 | addr2->next = addr_remote; | |
6910 | addr_remote = addr2; | |
6911 | ||
6912 | /* Copy the routing data */ | |
6913 | ||
6914 | addr2->domain = addr->domain; | |
6915 | addr2->router = addr->router; | |
6916 | addr2->transport = addr->transport; | |
6917 | addr2->host_list = addr->host_list; | |
6918 | addr2->fallback_hosts = addr->fallback_hosts; | |
d43cbe25 | 6919 | addr2->prop.errors_address = addr->prop.errors_address; |
7eb0e5d2 JH |
6920 | copyflag(addr2, addr, af_hide_child); |
6921 | copyflag(addr2, addr, af_local_host_removed); | |
059ec3d9 PH |
6922 | |
6923 | DEBUG(D_deliver|D_route) | |
059ec3d9 PH |
6924 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n" |
6925 | "routing %s\n" | |
6926 | "Routing for %s copied from %s\n", | |
6927 | addr2->address, addr2->address, addr->address); | |
059ec3d9 PH |
6928 | } |
6929 | } | |
6930 | } /* Continue with routing the next address. */ | |
6931 | } /* Loop to process any child addresses that the routers created, and | |
6932 | any rerouted addresses that got put back on the new chain. */ | |
6933 | ||
6934 | ||
6935 | /* Debugging: show the results of the routing */ | |
6936 | ||
6937 | DEBUG(D_deliver|D_retry|D_route) | |
6938 | { | |
059ec3d9 PH |
6939 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); |
6940 | debug_printf("After routing:\n Local deliveries:\n"); | |
d7978c0f | 6941 | for (address_item * p = addr_local; p; p = p->next) |
059ec3d9 | 6942 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6943 | |
059ec3d9 | 6944 | debug_printf(" Remote deliveries:\n"); |
d7978c0f | 6945 | for (address_item * p = addr_remote; p; p = p->next) |
059ec3d9 | 6946 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6947 | |
059ec3d9 | 6948 | debug_printf(" Failed addresses:\n"); |
d7978c0f | 6949 | for (address_item * p = addr_failed; p; p = p->next) |
059ec3d9 | 6950 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6951 | |
059ec3d9 | 6952 | debug_printf(" Deferred addresses:\n"); |
d7978c0f | 6953 | for (address_item * p = addr_defer; p; p = p->next) |
059ec3d9 | 6954 | debug_printf(" %s\n", p->address); |
059ec3d9 PH |
6955 | } |
6956 | ||
6957 | /* Free any resources that were cached during routing. */ | |
6958 | ||
6959 | search_tidyup(); | |
6960 | route_tidyup(); | |
6961 | ||
6962 | /* These two variables are set only during routing, after check_local_user. | |
6963 | Ensure they are not set in transports. */ | |
6964 | ||
6965 | local_user_gid = (gid_t)(-1); | |
6966 | local_user_uid = (uid_t)(-1); | |
6967 | ||
d7174846 PH |
6968 | /* Check for any duplicate addresses. This check is delayed until after |
6969 | routing, because the flexibility of the routing configuration means that | |
6970 | identical addresses with different parentage may end up being redirected to | |
6971 | different addresses. Checking for duplicates too early (as we previously used | |
6972 | to) makes this kind of thing not work. */ | |
6973 | ||
6974 | do_duplicate_check(&addr_local); | |
6975 | do_duplicate_check(&addr_remote); | |
6976 | ||
059ec3d9 PH |
6977 | /* When acting as an MUA wrapper, we proceed only if all addresses route to a |
6978 | remote transport. The check that they all end up in one transaction happens in | |
6979 | the do_remote_deliveries() function. */ | |
6980 | ||
d6c82d7b JH |
6981 | if ( mua_wrapper |
6982 | && (addr_local || addr_failed || addr_defer) | |
6983 | ) | |
059ec3d9 PH |
6984 | { |
6985 | address_item *addr; | |
6986 | uschar *which, *colon, *msg; | |
6987 | ||
d6c82d7b | 6988 | if (addr_local) |
059ec3d9 PH |
6989 | { |
6990 | addr = addr_local; | |
6991 | which = US"local"; | |
6992 | } | |
d6c82d7b | 6993 | else if (addr_defer) |
059ec3d9 PH |
6994 | { |
6995 | addr = addr_defer; | |
6996 | which = US"deferred"; | |
6997 | } | |
6998 | else | |
6999 | { | |
7000 | addr = addr_failed; | |
7001 | which = US"failed"; | |
7002 | } | |
7003 | ||
d6c82d7b | 7004 | while (addr->parent) addr = addr->parent; |
059ec3d9 | 7005 | |
d6c82d7b | 7006 | if (addr->message) |
059ec3d9 PH |
7007 | { |
7008 | colon = US": "; | |
7009 | msg = addr->message; | |
7010 | } | |
7011 | else colon = msg = US""; | |
7012 | ||
7013 | /* We don't need to log here for a forced failure as it will already | |
7014 | have been logged. Defer will also have been logged, but as a defer, so we do | |
7015 | need to do the failure logging. */ | |
7016 | ||
7017 | if (addr != addr_failed) | |
7018 | log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery", | |
7019 | addr->address, which); | |
7020 | ||
7021 | /* Always write an error to the caller */ | |
7022 | ||
7023 | fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address, | |
7024 | which, colon, msg); | |
7025 | ||
7026 | final_yield = DELIVER_MUA_FAILED; | |
7027 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
7028 | goto DELIVERY_TIDYUP; | |
7029 | } | |
7030 | ||
7031 | ||
7032 | /* If this is a run to continue deliveries to an external channel that is | |
7033 | already set up, defer any local deliveries. */ | |
7034 | ||
d6c82d7b | 7035 | if (continue_transport) |
059ec3d9 | 7036 | { |
d6c82d7b | 7037 | if (addr_defer) |
059ec3d9 PH |
7038 | { |
7039 | address_item *addr = addr_defer; | |
d6c82d7b | 7040 | while (addr->next) addr = addr->next; |
059ec3d9 PH |
7041 | addr->next = addr_local; |
7042 | } | |
d6c82d7b JH |
7043 | else |
7044 | addr_defer = addr_local; | |
059ec3d9 PH |
7045 | addr_local = NULL; |
7046 | } | |
7047 | ||
7048 | ||
7049 | /* Because address rewriting can happen in the routers, we should not really do | |
7050 | ANY deliveries until all addresses have been routed, so that all recipients of | |
7051 | the message get the same headers. However, this is in practice not always | |
7052 | possible, since sometimes remote addresses give DNS timeouts for days on end. | |
7053 | The pragmatic approach is to deliver what we can now, saving any rewritten | |
7054 | headers so that at least the next lot of recipients benefit from the rewriting | |
7055 | that has already been done. | |
7056 | ||
7057 | If any headers have been rewritten during routing, update the spool file to | |
7058 | remember them for all subsequent deliveries. This can be delayed till later if | |
7059 | there is only address to be delivered - if it succeeds the spool write need not | |
7060 | happen. */ | |
7061 | ||
8768d548 | 7062 | if ( f.header_rewritten |
92b0827a JH |
7063 | && ( addr_local && (addr_local->next || addr_remote) |
7064 | || addr_remote && addr_remote->next | |
d6c82d7b | 7065 | ) ) |
059ec3d9 PH |
7066 | { |
7067 | /* Panic-dies on error */ | |
7068 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
8768d548 | 7069 | f.header_rewritten = FALSE; |
059ec3d9 PH |
7070 | } |
7071 | ||
7072 | ||
de6f74f2 | 7073 | /* If there are any deliveries to do and we do not already have the journal |
92b0827a JH |
7074 | file, create it. This is used to record successful deliveries as soon as |
7075 | possible after each delivery is known to be complete. A file opened with | |
7076 | O_APPEND is used so that several processes can run simultaneously. | |
059ec3d9 PH |
7077 | |
7078 | The journal is just insurance against crashes. When the spool file is | |
7079 | ultimately updated at the end of processing, the journal is deleted. If a | |
7080 | journal is found to exist at the start of delivery, the addresses listed | |
7081 | therein are added to the non-recipients. */ | |
7082 | ||
d6c82d7b | 7083 | if (addr_local || addr_remote) |
059ec3d9 | 7084 | { |
92b0827a | 7085 | if (journal_fd < 0) |
059ec3d9 | 7086 | { |
92b0827a | 7087 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
4c0a7a9c | 7088 | |
92b0827a JH |
7089 | if ((journal_fd = Uopen(fname, |
7090 | #ifdef O_CLOEXEC | |
7091 | O_CLOEXEC | | |
7092 | #endif | |
7093 | O_WRONLY|O_APPEND|O_CREAT|O_EXCL, SPOOL_MODE)) < 0) | |
7094 | { | |
7095 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s", | |
7096 | fname, strerror(errno)); | |
7097 | return DELIVER_NOT_ATTEMPTED; | |
7098 | } | |
059ec3d9 | 7099 | |
92b0827a JH |
7100 | /* Set the close-on-exec flag, make the file owned by Exim, and ensure |
7101 | that the mode is correct - the group setting doesn't always seem to get | |
7102 | set automatically. */ | |
059ec3d9 | 7103 | |
b66fecb4 | 7104 | if( exim_fchown(journal_fd, exim_uid, exim_gid, fname) |
92b0827a JH |
7105 | || fchmod(journal_fd, SPOOL_MODE) |
7106 | #ifndef O_CLOEXEC | |
7107 | || fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC) | |
7108 | #endif | |
7109 | ) | |
7110 | { | |
7111 | int ret = Uunlink(fname); | |
7112 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s", | |
7113 | fname, strerror(errno)); | |
7114 | if(ret && errno != ENOENT) | |
7115 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", | |
7116 | fname, strerror(errno)); | |
7117 | return DELIVER_NOT_ATTEMPTED; | |
7118 | } | |
1ac6b2e7 | 7119 | } |
059ec3d9 | 7120 | } |
92b0827a JH |
7121 | else if (journal_fd >= 0) |
7122 | { | |
7123 | close(journal_fd); | |
7124 | journal_fd = -1; | |
7125 | } | |
059ec3d9 PH |
7126 | |
7127 | ||
1ac6b2e7 | 7128 | |
059ec3d9 PH |
7129 | /* Now we can get down to the business of actually doing deliveries. Local |
7130 | deliveries are done first, then remote ones. If ever the problems of how to | |
7131 | handle fallback transports are figured out, this section can be put into a loop | |
7132 | for handling fallbacks, though the uid switching will have to be revised. */ | |
7133 | ||
f1513293 PH |
7134 | /* Precompile a regex that is used to recognize a parameter in response |
7135 | to an LHLO command, if is isn't already compiled. This may be used on both | |
7136 | local and remote LMTP deliveries. */ | |
7137 | ||
d6c82d7b JH |
7138 | if (!regex_IGNOREQUOTA) |
7139 | regex_IGNOREQUOTA = | |
7140 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
f1513293 PH |
7141 | |
7142 | /* Handle local deliveries */ | |
7143 | ||
d6c82d7b | 7144 | if (addr_local) |
059ec3d9 PH |
7145 | { |
7146 | DEBUG(D_deliver|D_transport) | |
7147 | debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n"); | |
7148 | do_local_deliveries(); | |
8768d548 | 7149 | f.disable_logging = FALSE; |
059ec3d9 PH |
7150 | } |
7151 | ||
7152 | /* If queue_run_local is set, we do not want to attempt any remote deliveries, | |
7153 | so just queue them all. */ | |
7154 | ||
8768d548 | 7155 | if (f.queue_run_local) |
d6c82d7b | 7156 | while (addr_remote) |
059ec3d9 PH |
7157 | { |
7158 | address_item *addr = addr_remote; | |
7159 | addr_remote = addr->next; | |
7160 | addr->next = NULL; | |
7161 | addr->basic_errno = ERRNO_LOCAL_ONLY; | |
7162 | addr->message = US"remote deliveries suppressed"; | |
ba936fb8 | 7163 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 | 7164 | } |
059ec3d9 PH |
7165 | |
7166 | /* Handle remote deliveries */ | |
7167 | ||
d6c82d7b | 7168 | if (addr_remote) |
059ec3d9 PH |
7169 | { |
7170 | DEBUG(D_deliver|D_transport) | |
7171 | debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n"); | |
7172 | ||
7173 | /* Precompile some regex that are used to recognize parameters in response | |
7174 | to an EHLO command, if they aren't already compiled. */ | |
7175 | ||
d85cdeb5 | 7176 | smtp_deliver_init(); |
6c1c3d1d | 7177 | |
059ec3d9 PH |
7178 | /* Now sort the addresses if required, and do the deliveries. The yield of |
7179 | do_remote_deliveries is FALSE when mua_wrapper is set and all addresses | |
7180 | cannot be delivered in one transaction. */ | |
7181 | ||
d6c82d7b | 7182 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
7183 | if (!do_remote_deliveries(FALSE)) |
7184 | { | |
7185 | log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all " | |
7186 | "be delivered in one transaction"); | |
7187 | fprintf(stderr, "delivery to smarthost failed (configuration problem)\n"); | |
7188 | ||
7189 | final_yield = DELIVER_MUA_FAILED; | |
7190 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
7191 | goto DELIVERY_TIDYUP; | |
7192 | } | |
7193 | ||
7194 | /* See if any of the addresses that failed got put on the queue for delivery | |
7195 | to their fallback hosts. We do it this way because often the same fallback | |
7196 | host is used for many domains, so all can be sent in a single transaction | |
7197 | (if appropriately configured). */ | |
7198 | ||
d6c82d7b | 7199 | if (addr_fallback && !mua_wrapper) |
059ec3d9 PH |
7200 | { |
7201 | DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n"); | |
7202 | addr_remote = addr_fallback; | |
7203 | addr_fallback = NULL; | |
d6c82d7b | 7204 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
7205 | do_remote_deliveries(TRUE); |
7206 | } | |
8768d548 | 7207 | f.disable_logging = FALSE; |
059ec3d9 PH |
7208 | } |
7209 | ||
7210 | ||
7211 | /* All deliveries are now complete. Ignore SIGTERM during this tidying up | |
7212 | phase, to minimize cases of half-done things. */ | |
7213 | ||
7214 | DEBUG(D_deliver) | |
7215 | debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n"); | |
ef698bf6 | 7216 | cancel_cutthrough_connection(TRUE, US"deliveries are done"); |
059ec3d9 PH |
7217 | |
7218 | /* Root privilege is no longer needed */ | |
7219 | ||
7220 | exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying"); | |
7221 | ||
7222 | set_process_info("tidying up after delivering %s", message_id); | |
7223 | signal(SIGTERM, SIG_IGN); | |
7224 | ||
7225 | /* When we are acting as an MUA wrapper, the smtp transport will either have | |
47c7a64a PH |
7226 | succeeded for all addresses, or failed them all in normal cases. However, there |
7227 | are some setup situations (e.g. when a named port does not exist) that cause an | |
7228 | immediate exit with deferral of all addresses. Convert those into failures. We | |
7229 | do not ever want to retry, nor do we want to send a bounce message. */ | |
059ec3d9 PH |
7230 | |
7231 | if (mua_wrapper) | |
7232 | { | |
d6c82d7b | 7233 | if (addr_defer) |
47c7a64a | 7234 | { |
d7978c0f JH |
7235 | address_item * nextaddr; |
7236 | for (address_item * addr = addr_defer; addr; addr = nextaddr) | |
47c7a64a PH |
7237 | { |
7238 | log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred " | |
7239 | "delivery", addr->address); | |
7240 | nextaddr = addr->next; | |
7241 | addr->next = addr_failed; | |
7242 | addr_failed = addr; | |
7243 | } | |
7244 | addr_defer = NULL; | |
7245 | } | |
7246 | ||
7247 | /* Now all should either have succeeded or failed. */ | |
7248 | ||
d6c82d7b JH |
7249 | if (!addr_failed) |
7250 | final_yield = DELIVER_MUA_SUCCEEDED; | |
7251 | else | |
059ec3d9 | 7252 | { |
c562fd30 | 7253 | host_item * host; |
d6c82d7b JH |
7254 | uschar *s = addr_failed->user_message; |
7255 | ||
7256 | if (!s) s = addr_failed->message; | |
059ec3d9 PH |
7257 | |
7258 | fprintf(stderr, "Delivery failed: "); | |
7259 | if (addr_failed->basic_errno > 0) | |
7260 | { | |
7261 | fprintf(stderr, "%s", strerror(addr_failed->basic_errno)); | |
d6c82d7b | 7262 | if (s) fprintf(stderr, ": "); |
059ec3d9 | 7263 | } |
c562fd30 JH |
7264 | if ((host = addr_failed->host_used)) |
7265 | fprintf(stderr, "H=%s [%s]: ", host->name, host->address); | |
d6c82d7b JH |
7266 | if (s) |
7267 | fprintf(stderr, "%s", CS s); | |
7268 | else if (addr_failed->basic_errno <= 0) | |
7269 | fprintf(stderr, "unknown error"); | |
059ec3d9 PH |
7270 | fprintf(stderr, "\n"); |
7271 | ||
7272 | final_yield = DELIVER_MUA_FAILED; | |
7273 | addr_failed = NULL; | |
7274 | } | |
7275 | } | |
7276 | ||
7277 | /* In a normal configuration, we now update the retry database. This is done in | |
7278 | one fell swoop at the end in order not to keep opening and closing (and | |
7279 | locking) the database. The code for handling retries is hived off into a | |
7280 | separate module for convenience. We pass it the addresses of the various | |
7281 | chains, because deferred addresses can get moved onto the failed chain if the | |
7282 | retry cutoff time has expired for all alternative destinations. Bypass the | |
7283 | updating of the database if the -N flag is set, which is a debugging thing that | |
7284 | prevents actual delivery. */ | |
7285 | ||
8768d548 | 7286 | else if (!f.dont_deliver) |
d6c82d7b | 7287 | retry_update(&addr_defer, &addr_failed, &addr_succeed); |
059ec3d9 | 7288 | |
f40d5be3 | 7289 | /* Send DSN for successful messages if requested */ |
6c1c3d1d WB |
7290 | addr_senddsn = NULL; |
7291 | ||
436bda2a | 7292 | for (address_item * a = addr_succeed; a; a = a->next) |
6c1c3d1d | 7293 | { |
6c1c3d1d | 7294 | /* af_ignore_error not honored here. it's not an error */ |
f40d5be3 | 7295 | DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n" |
9671784a JH |
7296 | "DSN: processing successful delivery address: %s\n" |
7297 | "DSN: Sender_address: %s\n" | |
df98a6ff | 7298 | "DSN: orcpt: %s flags: 0x%x\n" |
9671784a JH |
7299 | "DSN: envid: %s ret: %d\n" |
7300 | "DSN: Final recipient: %s\n" | |
7301 | "DSN: Remote SMTP server supports DSN: %d\n", | |
436bda2a JH |
7302 | a->router ? a->router->name : US"(unknown)", |
7303 | a->address, | |
9671784a | 7304 | sender_address, |
436bda2a JH |
7305 | a->dsn_orcpt ? a->dsn_orcpt : US"NULL", |
7306 | a->dsn_flags, | |
d011368a | 7307 | dsn_envid ? dsn_envid : US"NULL", dsn_ret, |
436bda2a JH |
7308 | a->address, |
7309 | a->dsn_aware | |
9671784a | 7310 | ); |
6c1c3d1d WB |
7311 | |
7312 | /* send report if next hop not DSN aware or a router flagged "last DSN hop" | |
44416341 JH |
7313 | and a report was requested */ |
7314 | ||
7315 | if ( (a->dsn_aware != dsn_support_yes || a->dsn_flags & rf_dsnlasthop) | |
436bda2a | 7316 | && a->dsn_flags & rf_notify_success |
9671784a | 7317 | ) |
6c1c3d1d WB |
7318 | { |
7319 | /* copy and relink address_item and send report with all of them at once later */ | |
82f90600 | 7320 | address_item * addr_next = addr_senddsn; |
f3ebb786 | 7321 | addr_senddsn = store_get(sizeof(address_item), FALSE); |
436bda2a | 7322 | *addr_senddsn = *a; |
6c1c3d1d WB |
7323 | addr_senddsn->next = addr_next; |
7324 | } | |
7325 | else | |
94431adb | 7326 | DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n"); |
6c1c3d1d WB |
7327 | } |
7328 | ||
9671784a | 7329 | if (addr_senddsn) |
6c1c3d1d WB |
7330 | { |
7331 | pid_t pid; | |
7332 | int fd; | |
7333 | ||
94431adb | 7334 | /* create exim process to send message */ |
6c1c3d1d WB |
7335 | pid = child_open_exim(&fd); |
7336 | ||
7337 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid); | |
94431adb | 7338 | |
6c1c3d1d WB |
7339 | if (pid < 0) /* Creation of child failed */ |
7340 | { | |
7341 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " | |
d6c829b9 | 7342 | "create child process to send success-dsn message: %s", getpid(), |
6c1c3d1d WB |
7343 | getppid(), strerror(errno)); |
7344 | ||
1c5b1499 | 7345 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n"); |
94431adb | 7346 | } |
6c1c3d1d WB |
7347 | else /* Creation of child succeeded */ |
7348 | { | |
ee8b8090 | 7349 | FILE * f = fdopen(fd, "wb"); |
6c1c3d1d | 7350 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ |
45500060 | 7351 | uschar * bound; |
cab0c277 | 7352 | transport_ctx tctx = {{0}}; |
94431adb | 7353 | |
1c5b1499 | 7354 | DEBUG(D_deliver) |
d6c829b9 | 7355 | debug_printf("sending success-dsn to: %s\n", sender_address); |
94431adb | 7356 | |
6c1c3d1d | 7357 | /* build unique id for MIME boundary */ |
45500060 JH |
7358 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
7359 | DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound); | |
94431adb | 7360 | |
c007c974 JH |
7361 | if (errors_reply_to) |
7362 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
94431adb | 7363 | |
87abcb24 | 7364 | moan_write_from(f); |
c007c974 | 7365 | fprintf(f, "Auto-Submitted: auto-generated\n" |
c007c974 | 7366 | "To: %s\n" |
d6c829b9 JH |
7367 | "Subject: Delivery Status Notification\n", |
7368 | sender_address); | |
7369 | moan_write_references(f, NULL); | |
7370 | fprintf(f, "Content-Type: multipart/report;" | |
7371 | " report-type=delivery-status; boundary=%s\n" | |
c007c974 JH |
7372 | "MIME-Version: 1.0\n\n" |
7373 | ||
7374 | "--%s\n" | |
7375 | "Content-type: text/plain; charset=us-ascii\n\n" | |
94431adb | 7376 | |
c007c974 | 7377 | "This message was created automatically by mail delivery software.\n" |
8864c2c4 | 7378 | " ----- The following addresses had successful delivery notifications -----\n", |
d6c829b9 | 7379 | bound, bound); |
6c1c3d1d | 7380 | |
436bda2a | 7381 | for (address_item * a = addr_senddsn; a; a = a->next) |
c007c974 | 7382 | fprintf(f, "<%s> (relayed %s)\n\n", |
436bda2a JH |
7383 | a->address, |
7384 | a->dsn_flags & rf_dsnlasthop ? "via non DSN router" | |
7385 | : a->dsn_aware == dsn_support_no ? "to non-DSN-aware mailer" | |
ea97267c | 7386 | : "via non \"Remote SMTP\" router" |
c007c974 | 7387 | ); |
1c5b1499 | 7388 | |
c007c974 JH |
7389 | fprintf(f, "--%s\n" |
7390 | "Content-type: message/delivery-status\n\n" | |
7391 | "Reporting-MTA: dns; %s\n", | |
45500060 | 7392 | bound, smtp_active_hostname); |
c007c974 | 7393 | |
1c5b1499 JH |
7394 | if (dsn_envid) |
7395 | { /* must be decoded from xtext: see RFC 3461:6.3a */ | |
6c1c3d1d WB |
7396 | uschar *xdec_envid; |
7397 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
c007c974 | 7398 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7399 | else |
968178ac | 7400 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7401 | } |
c007c974 | 7402 | fputc('\n', f); |
6c1c3d1d | 7403 | |
436bda2a | 7404 | for (address_item * a = addr_senddsn; a; a = a->next) |
6c1c3d1d | 7405 | { |
436bda2a | 7406 | host_item * hu; |
c007c974 | 7407 | |
436bda2a | 7408 | print_dsn_addr_action(f, a, US"delivered", US"2.0.0"); |
c007c974 | 7409 | |
436bda2a | 7410 | if ((hu = a->host_used) && hu->name) |
1c5b1499 | 7411 | fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n", |
436bda2a | 7412 | hu->name); |
6c1c3d1d | 7413 | else |
1c5b1499 | 7414 | fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n", |
436bda2a | 7415 | a->dsn_flags & rf_dsnlasthop ? "DSN" : "SMTP"); |
6c1c3d1d WB |
7416 | } |
7417 | ||
45500060 | 7418 | fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound); |
94431adb | 7419 | |
6c1c3d1d WB |
7420 | fflush(f); |
7421 | transport_filter_argv = NULL; /* Just in case */ | |
7422 | return_path = sender_address; /* In case not previously set */ | |
94431adb | 7423 | |
6c1c3d1d | 7424 | /* Write the original email out */ |
6b46ecc6 | 7425 | |
ee8b8090 | 7426 | tctx.u.fd = fd; |
6b46ecc6 | 7427 | tctx.options = topt_add_return_path | topt_no_body; |
fc243e94 | 7428 | /*XXX hmm, FALSE(fail) retval ignored. |
ee8b8090 | 7429 | Could error for any number of reasons, and they are not handled. */ |
42055a33 | 7430 | transport_write_message(&tctx, 0); |
6c1c3d1d WB |
7431 | fflush(f); |
7432 | ||
21bc4865 | 7433 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
7434 | |
7435 | fflush(f); | |
7436 | fclose(f); | |
7437 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ | |
7438 | } | |
7439 | } | |
6c1c3d1d | 7440 | |
059ec3d9 PH |
7441 | /* If any addresses failed, we must send a message to somebody, unless |
7442 | af_ignore_error is set, in which case no action is taken. It is possible for | |
7443 | several messages to get sent if there are addresses with different | |
7444 | requirements. */ | |
7445 | ||
d6c82d7b | 7446 | while (addr_failed) |
059ec3d9 PH |
7447 | { |
7448 | pid_t pid; | |
7449 | int fd; | |
7450 | uschar *logtod = tod_stamp(tod_log); | |
7451 | address_item *addr; | |
7452 | address_item *handled_addr = NULL; | |
7453 | address_item **paddr; | |
7454 | address_item *msgchain = NULL; | |
7455 | address_item **pmsgchain = &msgchain; | |
7456 | ||
7457 | /* There are weird cases when logging is disabled in the transport. However, | |
7458 | there may not be a transport (address failed by a router). */ | |
7459 | ||
8768d548 | 7460 | f.disable_logging = FALSE; |
d6c82d7b | 7461 | if (addr_failed->transport) |
8768d548 | 7462 | f.disable_logging = addr_failed->transport->disable_logging; |
059ec3d9 PH |
7463 | |
7464 | DEBUG(D_deliver) | |
7465 | debug_printf("processing failed address %s\n", addr_failed->address); | |
7466 | ||
7467 | /* There are only two ways an address in a bounce message can get here: | |
7468 | ||
7469 | (1) When delivery was initially deferred, but has now timed out (in the call | |
7470 | to retry_update() above). We can detect this by testing for | |
7471 | af_retry_timedout. If the address does not have its own errors address, | |
7472 | we arrange to ignore the error. | |
7473 | ||
7474 | (2) If delivery failures for bounce messages are being ignored. We can detect | |
7475 | this by testing for af_ignore_error. This will also be set if a bounce | |
7476 | message has been autothawed and the ignore_bounce_errors_after time has | |
7477 | passed. It might also be set if a router was explicitly configured to | |
7478 | ignore errors (errors_to = ""). | |
7479 | ||
7480 | If neither of these cases obtains, something has gone wrong. Log the | |
7481 | incident, but then ignore the error. */ | |
7482 | ||
d6c82d7b | 7483 | if (sender_address[0] == 0 && !addr_failed->prop.errors_address) |
059ec3d9 | 7484 | { |
9671784a | 7485 | if ( !testflag(addr_failed, af_retry_timedout) |
7eb0e5d2 | 7486 | && !addr_failed->prop.ignore_error) |
059ec3d9 PH |
7487 | log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message " |
7488 | "failure is neither frozen nor ignored (it's been ignored)"); | |
7eb0e5d2 JH |
7489 | |
7490 | addr_failed->prop.ignore_error = TRUE; | |
059ec3d9 PH |
7491 | } |
7492 | ||
7493 | /* If the first address on the list has af_ignore_error set, just remove | |
7494 | it from the list, throw away any saved message file, log it, and | |
7495 | mark the recipient done. */ | |
7496 | ||
7eb0e5d2 | 7497 | if ( addr_failed->prop.ignore_error |
df98a6ff JH |
7498 | || addr_failed->dsn_flags & rf_dsnflags |
7499 | && !(addr_failed->dsn_flags & rf_notify_failure) | |
ea97267c | 7500 | ) |
1c5b1499 | 7501 | { |
059ec3d9 PH |
7502 | addr = addr_failed; |
7503 | addr_failed = addr->next; | |
d6c82d7b | 7504 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 | 7505 | |
ffbc20ed MK |
7506 | #ifndef DISABLE_EVENT |
7507 | msg_event_raise(US"msg:fail:delivery", addr); | |
7508 | #endif | |
df98a6ff | 7509 | log_write(0, LOG_MAIN, "%s%s%s%s: error ignored%s", |
059ec3d9 | 7510 | addr->address, |
1c5b1499 JH |
7511 | !addr->parent ? US"" : US" <", |
7512 | !addr->parent ? US"" : addr->parent->address, | |
df98a6ff JH |
7513 | !addr->parent ? US"" : US">", |
7514 | addr->prop.ignore_error | |
7515 | ? US"" : US": RFC 3461 DSN, failure notify not requested"); | |
059ec3d9 PH |
7516 | |
7517 | address_done(addr, logtod); | |
7518 | child_done(addr, logtod); | |
7519 | /* Panic-dies on error */ | |
7520 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7521 | } | |
7522 | ||
7523 | /* Otherwise, handle the sending of a message. Find the error address for | |
7524 | the first address, then send a message that includes all failed addresses | |
7525 | that have the same error address. Note the bounce_recipient is a global so | |
4c04137d | 7526 | that it can be accessed by $bounce_recipient while creating a customized |
059ec3d9 PH |
7527 | error message. */ |
7528 | ||
7529 | else | |
7530 | { | |
d6c82d7b JH |
7531 | if (!(bounce_recipient = addr_failed->prop.errors_address)) |
7532 | bounce_recipient = sender_address; | |
059ec3d9 PH |
7533 | |
7534 | /* Make a subprocess to send a message */ | |
7535 | ||
1c5b1499 | 7536 | if ((pid = child_open_exim(&fd)) < 0) |
059ec3d9 PH |
7537 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " |
7538 | "create child process to send failure message: %s", getpid(), | |
7539 | getppid(), strerror(errno)); | |
7540 | ||
7541 | /* Creation of child succeeded */ | |
7542 | ||
7543 | else | |
7544 | { | |
7545 | int ch, rc; | |
7546 | int filecount = 0; | |
7547 | int rcount = 0; | |
7548 | uschar *bcc, *emf_text; | |
8768d548 JH |
7549 | FILE * fp = fdopen(fd, "wb"); |
7550 | FILE * emf = NULL; | |
059ec3d9 PH |
7551 | BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0; |
7552 | int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) * | |
7553 | DELIVER_IN_BUFFER_SIZE; | |
45500060 | 7554 | uschar * bound; |
0f9d3aea JH |
7555 | uschar *dsnlimitmsg; |
7556 | uschar *dsnnotifyhdr; | |
7557 | int topt; | |
059ec3d9 PH |
7558 | |
7559 | DEBUG(D_deliver) | |
7560 | debug_printf("sending error message to: %s\n", bounce_recipient); | |
7561 | ||
7562 | /* Scan the addresses for all that have the same errors address, removing | |
7563 | them from the addr_failed chain, and putting them on msgchain. */ | |
7564 | ||
7565 | paddr = &addr_failed; | |
d6c82d7b | 7566 | for (addr = addr_failed; addr; addr = *paddr) |
d43cbe25 JH |
7567 | if (Ustrcmp(bounce_recipient, addr->prop.errors_address |
7568 | ? addr->prop.errors_address : sender_address) == 0) | |
1c5b1499 | 7569 | { /* The same - dechain */ |
059ec3d9 PH |
7570 | *paddr = addr->next; |
7571 | *pmsgchain = addr; | |
7572 | addr->next = NULL; | |
7573 | pmsgchain = &(addr->next); | |
7574 | } | |
1c5b1499 JH |
7575 | else |
7576 | paddr = &addr->next; /* Not the same; skip */ | |
059ec3d9 PH |
7577 | |
7578 | /* Include X-Failed-Recipients: for automatic interpretation, but do | |
7579 | not let any one header line get too long. We do this by starting a | |
7580 | new header every 50 recipients. Omit any addresses for which the | |
7581 | "hide_child" flag is set. */ | |
7582 | ||
d6c82d7b | 7583 | for (addr = msgchain; addr; addr = addr->next) |
059ec3d9 PH |
7584 | { |
7585 | if (testflag(addr, af_hide_child)) continue; | |
7586 | if (rcount >= 50) | |
7587 | { | |
8768d548 | 7588 | fprintf(fp, "\n"); |
059ec3d9 PH |
7589 | rcount = 0; |
7590 | } | |
8768d548 | 7591 | fprintf(fp, "%s%s", |
d6c82d7b JH |
7592 | rcount++ == 0 |
7593 | ? "X-Failed-Recipients: " | |
7594 | : ",\n ", | |
7595 | testflag(addr, af_pfr) && addr->parent | |
7596 | ? string_printing(addr->parent->address) | |
7597 | : string_printing(addr->address)); | |
059ec3d9 | 7598 | } |
8768d548 | 7599 | if (rcount > 0) fprintf(fp, "\n"); |
059ec3d9 PH |
7600 | |
7601 | /* Output the standard headers */ | |
7602 | ||
1c5b1499 | 7603 | if (errors_reply_to) |
8768d548 JH |
7604 | fprintf(fp, "Reply-To: %s\n", errors_reply_to); |
7605 | fprintf(fp, "Auto-Submitted: auto-replied\n"); | |
7606 | moan_write_from(fp); | |
7607 | fprintf(fp, "To: %s\n", bounce_recipient); | |
d6c829b9 | 7608 | moan_write_references(fp, NULL); |
059ec3d9 | 7609 | |
6c1c3d1d | 7610 | /* generate boundary string and output MIME-Headers */ |
45500060 | 7611 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 | 7612 | |
8768d548 | 7613 | fprintf(fp, "Content-Type: multipart/report;" |
c007c974 JH |
7614 | " report-type=delivery-status; boundary=%s\n" |
7615 | "MIME-Version: 1.0\n", | |
45500060 | 7616 | bound); |
6c1c3d1d | 7617 | |
059ec3d9 PH |
7618 | /* Open a template file if one is provided. Log failure to open, but |
7619 | carry on - default texts will be used. */ | |
7620 | ||
c007c974 JH |
7621 | if (bounce_message_file) |
7622 | if (!(emf = Ufopen(bounce_message_file, "rb"))) | |
059ec3d9 PH |
7623 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error " |
7624 | "message texts: %s", bounce_message_file, strerror(errno)); | |
059ec3d9 PH |
7625 | |
7626 | /* Quietly copy to configured additional addresses if required. */ | |
7627 | ||
c007c974 | 7628 | if ((bcc = moan_check_errorcopy(bounce_recipient))) |
8768d548 | 7629 | fprintf(fp, "Bcc: %s\n", bcc); |
059ec3d9 PH |
7630 | |
7631 | /* The texts for the message can be read from a template file; if there | |
7632 | isn't one, or if it is too short, built-in texts are used. The first | |
7633 | emf text is a Subject: and any other headers. */ | |
7634 | ||
c007c974 | 7635 | if ((emf_text = next_emf(emf, US"header"))) |
8768d548 | 7636 | fprintf(fp, "%s\n", emf_text); |
c007c974 | 7637 | else |
8768d548 | 7638 | fprintf(fp, "Subject: Mail delivery failed%s\n\n", |
059ec3d9 | 7639 | to_sender? ": returning message to sender" : ""); |
059ec3d9 | 7640 | |
6c1c3d1d | 7641 | /* output human readable part as text/plain section */ |
8768d548 | 7642 | fprintf(fp, "--%s\n" |
c007c974 | 7643 | "Content-type: text/plain; charset=us-ascii\n\n", |
45500060 | 7644 | bound); |
6c1c3d1d | 7645 | |
c007c974 | 7646 | if ((emf_text = next_emf(emf, US"intro"))) |
8768d548 | 7647 | fprintf(fp, "%s", CS emf_text); |
c007c974 | 7648 | else |
059ec3d9 | 7649 | { |
8768d548 | 7650 | fprintf(fp, |
059ec3d9 PH |
7651 | /* This message has been reworded several times. It seems to be confusing to |
7652 | somebody, however it is worded. I have retreated to the original, simple | |
7653 | wording. */ | |
7654 | "This message was created automatically by mail delivery software.\n"); | |
c007c974 JH |
7655 | |
7656 | if (bounce_message_text) | |
8768d548 | 7657 | fprintf(fp, "%s", CS bounce_message_text); |
059ec3d9 | 7658 | if (to_sender) |
8768d548 | 7659 | fprintf(fp, |
059ec3d9 PH |
7660 | "\nA message that you sent could not be delivered to one or more of its\n" |
7661 | "recipients. This is a permanent error. The following address(es) failed:\n"); | |
059ec3d9 | 7662 | else |
8768d548 | 7663 | fprintf(fp, |
059ec3d9 PH |
7664 | "\nA message sent by\n\n <%s>\n\n" |
7665 | "could not be delivered to one or more of its recipients. The following\n" | |
7666 | "address(es) failed:\n", sender_address); | |
059ec3d9 | 7667 | } |
8768d548 | 7668 | fputc('\n', fp); |
059ec3d9 PH |
7669 | |
7670 | /* Process the addresses, leaving them on the msgchain if they have a | |
7671 | file name for a return message. (There has already been a check in | |
447d236c PH |
7672 | post_process_one() for the existence of data in the message file.) A TRUE |
7673 | return from print_address_information() means that the address is not | |
7674 | hidden. */ | |
059ec3d9 PH |
7675 | |
7676 | paddr = &msgchain; | |
d6c82d7b | 7677 | for (addr = msgchain; addr; addr = *paddr) |
059ec3d9 | 7678 | { |
8768d548 JH |
7679 | if (print_address_information(addr, fp, US" ", US"\n ", US"")) |
7680 | print_address_error(addr, fp, US""); | |
059ec3d9 PH |
7681 | |
7682 | /* End the final line for the address */ | |
7683 | ||
8768d548 | 7684 | fputc('\n', fp); |
059ec3d9 PH |
7685 | |
7686 | /* Leave on msgchain if there's a return file. */ | |
7687 | ||
7688 | if (addr->return_file >= 0) | |
7689 | { | |
7690 | paddr = &(addr->next); | |
7691 | filecount++; | |
7692 | } | |
7693 | ||
7694 | /* Else save so that we can tick off the recipient when the | |
7695 | message is sent. */ | |
7696 | ||
7697 | else | |
7698 | { | |
7699 | *paddr = addr->next; | |
7700 | addr->next = handled_addr; | |
7701 | handled_addr = addr; | |
7702 | } | |
7703 | } | |
7704 | ||
8768d548 | 7705 | fputc('\n', fp); |
059ec3d9 PH |
7706 | |
7707 | /* Get the next text, whether we need it or not, so as to be | |
7708 | positioned for the one after. */ | |
7709 | ||
7710 | emf_text = next_emf(emf, US"generated text"); | |
7711 | ||
7712 | /* If there were any file messages passed by the local transports, | |
7713 | include them in the message. Then put the address on the handled chain. | |
7714 | In the case of a batch of addresses that were all sent to the same | |
7715 | transport, the return_file field in all of them will contain the same | |
7716 | fd, and the return_filename field in the *last* one will be set (to the | |
7717 | name of the file). */ | |
7718 | ||
c007c974 | 7719 | if (msgchain) |
059ec3d9 PH |
7720 | { |
7721 | address_item *nextaddr; | |
7722 | ||
c007c974 | 7723 | if (emf_text) |
8768d548 | 7724 | fprintf(fp, "%s", CS emf_text); |
c007c974 | 7725 | else |
8768d548 | 7726 | fprintf(fp, |
059ec3d9 PH |
7727 | "The following text was generated during the delivery " |
7728 | "attempt%s:\n", (filecount > 1)? "s" : ""); | |
7729 | ||
d6c82d7b | 7730 | for (addr = msgchain; addr; addr = nextaddr) |
059ec3d9 PH |
7731 | { |
7732 | FILE *fm; | |
7733 | address_item *topaddr = addr; | |
7734 | ||
7735 | /* List all the addresses that relate to this file */ | |
7736 | ||
8768d548 | 7737 | fputc('\n', fp); |
c007c974 | 7738 | while(addr) /* Insurance */ |
059ec3d9 | 7739 | { |
8768d548 | 7740 | print_address_information(addr, fp, US"------ ", US"\n ", |
059ec3d9 | 7741 | US" ------\n"); |
c007c974 | 7742 | if (addr->return_filename) break; |
059ec3d9 PH |
7743 | addr = addr->next; |
7744 | } | |
8768d548 | 7745 | fputc('\n', fp); |
059ec3d9 PH |
7746 | |
7747 | /* Now copy the file */ | |
7748 | ||
d6c82d7b | 7749 | if (!(fm = Ufopen(addr->return_filename, "rb"))) |
8768d548 | 7750 | fprintf(fp, " +++ Exim error... failed to open text file: %s\n", |
059ec3d9 PH |
7751 | strerror(errno)); |
7752 | else | |
7753 | { | |
8768d548 | 7754 | while ((ch = fgetc(fm)) != EOF) fputc(ch, fp); |
f1e894f3 | 7755 | (void)fclose(fm); |
059ec3d9 PH |
7756 | } |
7757 | Uunlink(addr->return_filename); | |
7758 | ||
7759 | /* Can now add to handled chain, first fishing off the next | |
7760 | address on the msgchain. */ | |
7761 | ||
7762 | nextaddr = addr->next; | |
7763 | addr->next = handled_addr; | |
7764 | handled_addr = topaddr; | |
7765 | } | |
8768d548 | 7766 | fputc('\n', fp); |
059ec3d9 PH |
7767 | } |
7768 | ||
6c1c3d1d | 7769 | /* output machine readable part */ |
8c5d388a | 7770 | #ifdef SUPPORT_I18N |
9671784a | 7771 | if (message_smtputf8) |
8768d548 | 7772 | fprintf(fp, "--%s\n" |
9671784a JH |
7773 | "Content-type: message/global-delivery-status\n\n" |
7774 | "Reporting-MTA: dns; %s\n", | |
7775 | bound, smtp_active_hostname); | |
7776 | else | |
7777 | #endif | |
8768d548 | 7778 | fprintf(fp, "--%s\n" |
9671784a JH |
7779 | "Content-type: message/delivery-status\n\n" |
7780 | "Reporting-MTA: dns; %s\n", | |
7781 | bound, smtp_active_hostname); | |
c007c974 JH |
7782 | |
7783 | if (dsn_envid) | |
7784 | { | |
6c1c3d1d WB |
7785 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
7786 | uschar *xdec_envid; | |
7787 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
8768d548 | 7788 | fprintf(fp, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7789 | else |
8768d548 | 7790 | fprintf(fp, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7791 | } |
8768d548 | 7792 | fputc('\n', fp); |
94431adb | 7793 | |
c007c974 | 7794 | for (addr = handled_addr; addr; addr = addr->next) |
6c1c3d1d | 7795 | { |
895fbaf2 | 7796 | host_item * hu; |
436bda2a JH |
7797 | |
7798 | print_dsn_addr_action(fp, addr, US"failed", US"5.0.0"); | |
7799 | ||
895fbaf2 JH |
7800 | if ((hu = addr->host_used) && hu->name) |
7801 | { | |
8768d548 | 7802 | fprintf(fp, "Remote-MTA: dns; %s\n", hu->name); |
895fbaf2 | 7803 | #ifdef EXPERIMENTAL_DSN_INFO |
0e8aed8a JH |
7804 | { |
7805 | const uschar * s; | |
895fbaf2 JH |
7806 | if (hu->address) |
7807 | { | |
7808 | uschar * p = hu->port == 25 | |
7809 | ? US"" : string_sprintf(":%d", hu->port); | |
8768d548 | 7810 | fprintf(fp, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p); |
895fbaf2 JH |
7811 | } |
7812 | if ((s = addr->smtp_greeting) && *s) | |
8768d548 | 7813 | fprintf(fp, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s); |
895fbaf2 | 7814 | if ((s = addr->helo_response) && *s) |
8768d548 | 7815 | fprintf(fp, "X-Remote-MTA-helo-response: X-str; %s\n", s); |
895fbaf2 | 7816 | if ((s = addr->message) && *s) |
8768d548 | 7817 | fprintf(fp, "X-Exim-Diagnostic: X-str; %s\n", s); |
0e8aed8a | 7818 | } |
895fbaf2 | 7819 | #endif |
8768d548 | 7820 | print_dsn_diagnostic_code(addr, fp); |
895fbaf2 | 7821 | } |
8768d548 | 7822 | fputc('\n', fp); |
6c1c3d1d | 7823 | } |
6c1c3d1d | 7824 | |
059ec3d9 PH |
7825 | /* Now copy the message, trying to give an intelligible comment if |
7826 | it is too long for it all to be copied. The limit isn't strictly | |
7827 | applied because of the buffering. There is, however, an option | |
7828 | to suppress copying altogether. */ | |
7829 | ||
7830 | emf_text = next_emf(emf, US"copy"); | |
7831 | ||
6c1c3d1d | 7832 | /* add message body |
94431adb | 7833 | we ignore the intro text from template and add |
6c1c3d1d | 7834 | the text for bounce_return_size_limit at the end. |
94431adb | 7835 | |
6c1c3d1d WB |
7836 | bounce_return_message is ignored |
7837 | in case RET= is defined we honor these values | |
7838 | otherwise bounce_return_body is honored. | |
94431adb | 7839 | |
6c1c3d1d WB |
7840 | bounce_return_size_limit is always honored. |
7841 | */ | |
94431adb | 7842 | |
8768d548 | 7843 | fprintf(fp, "--%s\n", bound); |
6c1c3d1d | 7844 | |
0f9d3aea JH |
7845 | dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned"; |
7846 | dsnnotifyhdr = NULL; | |
7847 | topt = topt_add_return_path; | |
7848 | ||
6c1c3d1d WB |
7849 | /* RET=HDRS? top priority */ |
7850 | if (dsn_ret == dsn_ret_hdrs) | |
7851 | topt |= topt_no_body; | |
7852 | else | |
62b7cd08 JH |
7853 | { |
7854 | struct stat statbuf; | |
7855 | ||
6c1c3d1d WB |
7856 | /* no full body return at all? */ |
7857 | if (!bounce_return_body) | |
7858 | { | |
7859 | topt |= topt_no_body; | |
7860 | /* add header if we overrule RET=FULL */ | |
7861 | if (dsn_ret == dsn_ret_full) | |
7862 | dsnnotifyhdr = dsnlimitmsg; | |
7863 | } | |
62b7cd08 | 7864 | /* line length limited... return headers only if oversize */ |
6c1c3d1d | 7865 | /* size limited ... return headers only if limit reached */ |
62b7cd08 JH |
7866 | else if ( max_received_linelength > bounce_return_linesize_limit |
7867 | || ( bounce_return_size_limit > 0 | |
7868 | && fstat(deliver_datafile, &statbuf) == 0 | |
7869 | && statbuf.st_size > max | |
7870 | ) ) | |
7871 | { | |
7872 | topt |= topt_no_body; | |
7873 | dsnnotifyhdr = dsnlimitmsg; | |
6c1c3d1d | 7874 | } |
62b7cd08 | 7875 | } |
94431adb | 7876 | |
8c5d388a | 7877 | #ifdef SUPPORT_I18N |
9671784a JH |
7878 | if (message_smtputf8) |
7879 | fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n" | |
7880 | : "Content-type: message/global\n\n", | |
8768d548 | 7881 | fp); |
9671784a JH |
7882 | else |
7883 | #endif | |
7884 | fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n" | |
7885 | : "Content-type: message/rfc822\n\n", | |
8768d548 | 7886 | fp); |
6c1c3d1d | 7887 | |
8768d548 | 7888 | fflush(fp); |
6c1c3d1d WB |
7889 | transport_filter_argv = NULL; /* Just in case */ |
7890 | return_path = sender_address; /* In case not previously set */ | |
6b46ecc6 | 7891 | { /* Dummy transport for headers add */ |
cab0c277 | 7892 | transport_ctx tctx = {{0}}; |
6d5c916c | 7893 | transport_instance tb = {0}; |
6b46ecc6 | 7894 | |
8768d548 | 7895 | tctx.u.fd = fileno(fp); |
6d5c916c JH |
7896 | tctx.tblock = &tb; |
7897 | tctx.options = topt; | |
7898 | tb.add_headers = dsnnotifyhdr; | |
6b46ecc6 | 7899 | |
ee8b8090 | 7900 | /*XXX no checking for failure! buggy! */ |
42055a33 | 7901 | transport_write_message(&tctx, 0); |
6b46ecc6 | 7902 | } |
8768d548 | 7903 | fflush(fp); |
94431adb | 7904 | |
6c1c3d1d | 7905 | /* we never add the final text. close the file */ |
c007c974 | 7906 | if (emf) |
6c1c3d1d | 7907 | (void)fclose(emf); |
94431adb | 7908 | |
8768d548 | 7909 | fprintf(fp, "\n--%s--\n", bound); |
059ec3d9 PH |
7910 | |
7911 | /* Close the file, which should send an EOF to the child process | |
7912 | that is receiving the message. Wait for it to finish. */ | |
7913 | ||
8768d548 | 7914 | (void)fclose(fp); |
059ec3d9 PH |
7915 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ |
7916 | ||
7917 | /* In the test harness, let the child do it's thing first. */ | |
7918 | ||
9f01e50d | 7919 | testharness_pause_ms(500); |
059ec3d9 PH |
7920 | |
7921 | /* If the process failed, there was some disaster in setting up the | |
7922 | error message. Unless the message is very old, ensure that addr_defer | |
7923 | is non-null, which will have the effect of leaving the message on the | |
7924 | spool. The failed addresses will get tried again next time. However, we | |
7925 | don't really want this to happen too often, so freeze the message unless | |
7926 | there are some genuine deferred addresses to try. To do this we have | |
7927 | to call spool_write_header() here, because with no genuine deferred | |
7928 | addresses the normal code below doesn't get run. */ | |
7929 | ||
7930 | if (rc != 0) | |
7931 | { | |
7932 | uschar *s = US""; | |
32dfdf8b | 7933 | if (now - received_time.tv_sec < retry_maximum_timeout && !addr_defer) |
059ec3d9 PH |
7934 | { |
7935 | addr_defer = (address_item *)(+1); | |
8768d548 | 7936 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
7937 | deliver_frozen_at = time(NULL); |
7938 | /* Panic-dies on error */ | |
7939 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7940 | s = US" (frozen)"; | |
7941 | } | |
7942 | deliver_msglog("Process failed (%d) when writing error message " | |
7943 | "to %s%s", rc, bounce_recipient, s); | |
7944 | log_write(0, LOG_MAIN, "Process failed (%d) when writing error message " | |
7945 | "to %s%s", rc, bounce_recipient, s); | |
7946 | } | |
7947 | ||
7948 | /* The message succeeded. Ensure that the recipients that failed are | |
7949 | now marked finished with on the spool and their parents updated. */ | |
7950 | ||
7951 | else | |
7952 | { | |
d6c82d7b | 7953 | for (addr = handled_addr; addr; addr = addr->next) |
059ec3d9 PH |
7954 | { |
7955 | address_done(addr, logtod); | |
7956 | child_done(addr, logtod); | |
7957 | } | |
7958 | /* Panic-dies on error */ | |
7959 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7960 | } | |
7961 | } | |
7962 | } | |
7963 | } | |
7964 | ||
8768d548 | 7965 | f.disable_logging = FALSE; /* In case left set */ |
059ec3d9 PH |
7966 | |
7967 | /* Come here from the mua_wrapper case if routing goes wrong */ | |
7968 | ||
7969 | DELIVERY_TIDYUP: | |
7970 | ||
7971 | /* If there are now no deferred addresses, we are done. Preserve the | |
7972 | message log if so configured, and we are using them. Otherwise, sling it. | |
7973 | Then delete the message itself. */ | |
7974 | ||
d6c82d7b | 7975 | if (!addr_defer) |
059ec3d9 | 7976 | { |
41313d92 JH |
7977 | uschar * fname; |
7978 | ||
059ec3d9 PH |
7979 | if (message_logs) |
7980 | { | |
41313d92 | 7981 | fname = spool_fname(US"msglog", message_subdir, id, US""); |
059ec3d9 PH |
7982 | if (preserve_message_logs) |
7983 | { | |
7984 | int rc; | |
41313d92 JH |
7985 | uschar * moname = spool_fname(US"msglog.OLD", US"", id, US""); |
7986 | ||
7987 | if ((rc = Urename(fname, moname)) < 0) | |
059ec3d9 | 7988 | { |
41313d92 JH |
7989 | (void)directory_make(spool_directory, |
7990 | spool_sname(US"msglog.OLD", US""), | |
7991 | MSGLOG_DIRECTORY_MODE, TRUE); | |
7992 | rc = Urename(fname, moname); | |
059ec3d9 PH |
7993 | } |
7994 | if (rc < 0) | |
7995 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the " | |
41313d92 | 7996 | "msglog.OLD directory", fname); |
059ec3d9 PH |
7997 | } |
7998 | else | |
41313d92 | 7999 | if (Uunlink(fname) < 0) |
0761d44e | 8000 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 8001 | fname, strerror(errno)); |
059ec3d9 PH |
8002 | } |
8003 | ||
8004 | /* Remove the two message files. */ | |
8e669ac1 | 8005 | |
41313d92 JH |
8006 | fname = spool_fname(US"input", message_subdir, id, US"-D"); |
8007 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 8008 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 JH |
8009 | fname, strerror(errno)); |
8010 | fname = spool_fname(US"input", message_subdir, id, US"-H"); | |
8011 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 8012 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 8013 | fname, strerror(errno)); |
2ac0e484 PH |
8014 | |
8015 | /* Log the end of this message, with queue time if requested. */ | |
8016 | ||
6c6d6e48 | 8017 | if (LOGGING(queue_time_overall)) |
306c6c77 | 8018 | log_write(0, LOG_MAIN, "Completed QT=%s", string_timesince(&received_time)); |
2ac0e484 PH |
8019 | else |
8020 | log_write(0, LOG_MAIN, "Completed"); | |
0e8a9471 MH |
8021 | |
8022 | /* Unset deliver_freeze so that we won't try to move the spool files further down */ | |
8768d548 | 8023 | f.deliver_freeze = FALSE; |
14a465c3 | 8024 | |
0cbf2b82 | 8025 | #ifndef DISABLE_EVENT |
774ef2d7 | 8026 | (void) event_raise(event_action, US"msg:complete", NULL); |
14a465c3 | 8027 | #endif |
fa41615d | 8028 | } |
059ec3d9 PH |
8029 | |
8030 | /* If there are deferred addresses, we are keeping this message because it is | |
8031 | not yet completed. Lose any temporary files that were catching output from | |
8032 | pipes for any of the deferred addresses, handle one-time aliases, and see if | |
8033 | the message has been on the queue for so long that it is time to send a warning | |
8034 | message to the sender, unless it is a mailer-daemon. If all deferred addresses | |
8035 | have the same domain, we can set deliver_domain for the expansion of | |
8036 | delay_warning_ condition - if any of them are pipes, files, or autoreplies, use | |
8037 | the parent's domain. | |
8038 | ||
8039 | If all the deferred addresses have an error number that indicates "retry time | |
8040 | not reached", skip sending the warning message, because it won't contain the | |
8041 | reason for the delay. It will get sent at the next real delivery attempt. | |
de6f74f2 JH |
8042 | Exception: for retries caused by a remote peer we use the error message |
8043 | store in the retry DB as the reason. | |
059ec3d9 PH |
8044 | However, if at least one address has tried, we'd better include all of them in |
8045 | the message. | |
8046 | ||
8047 | If we can't make a process to send the message, don't worry. | |
8048 | ||
8049 | For mailing list expansions we want to send the warning message to the | |
8050 | mailing list manager. We can't do a perfect job here, as some addresses may | |
8051 | have different errors addresses, but if we take the errors address from | |
8052 | each deferred address it will probably be right in most cases. | |
8053 | ||
8054 | If addr_defer == +1, it means there was a problem sending an error message | |
8055 | for failed addresses, and there were no "real" deferred addresses. The value | |
8056 | was set just to keep the message on the spool, so there is nothing to do here. | |
8057 | */ | |
8058 | ||
8059 | else if (addr_defer != (address_item *)(+1)) | |
8060 | { | |
059ec3d9 | 8061 | uschar *recipients = US""; |
de6f74f2 | 8062 | BOOL want_warning_msg = FALSE; |
059ec3d9 | 8063 | |
d6c82d7b JH |
8064 | deliver_domain = testflag(addr_defer, af_pfr) |
8065 | ? addr_defer->parent->domain : addr_defer->domain; | |
059ec3d9 | 8066 | |
d7978c0f | 8067 | for (address_item * addr = addr_defer; addr; addr = addr->next) |
059ec3d9 PH |
8068 | { |
8069 | address_item *otaddr; | |
8070 | ||
de6f74f2 | 8071 | if (addr->basic_errno > ERRNO_WARN_BASE) want_warning_msg = TRUE; |
059ec3d9 | 8072 | |
d6c82d7b | 8073 | if (deliver_domain) |
059ec3d9 | 8074 | { |
55414b25 JH |
8075 | const uschar *d = testflag(addr, af_pfr) |
8076 | ? addr->parent->domain : addr->domain; | |
059ec3d9 PH |
8077 | |
8078 | /* The domain may be unset for an address that has never been routed | |
8079 | because the system filter froze the message. */ | |
8080 | ||
d6c82d7b JH |
8081 | if (!d || Ustrcmp(d, deliver_domain) != 0) |
8082 | deliver_domain = NULL; | |
059ec3d9 PH |
8083 | } |
8084 | ||
d6c82d7b | 8085 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 PH |
8086 | |
8087 | /* Handle the case of one-time aliases. If any address in the ancestry | |
8088 | of this one is flagged, ensure it is in the recipients list, suitably | |
8089 | flagged, and that its parent is marked delivered. */ | |
8090 | ||
d6c82d7b JH |
8091 | for (otaddr = addr; otaddr; otaddr = otaddr->parent) |
8092 | if (otaddr->onetime_parent) break; | |
059ec3d9 | 8093 | |
d6c82d7b | 8094 | if (otaddr) |
059ec3d9 PH |
8095 | { |
8096 | int i; | |
8097 | int t = recipients_count; | |
8098 | ||
8099 | for (i = 0; i < recipients_count; i++) | |
8100 | { | |
8101 | uschar *r = recipients_list[i].address; | |
8102 | if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i; | |
8103 | if (Ustrcmp(otaddr->address, r) == 0) break; | |
8104 | } | |
8105 | ||
8106 | /* Didn't find the address already in the list, and did find the | |
d1f9fb42 JH |
8107 | ultimate parent's address in the list, and they really are different |
8108 | (i.e. not from an identity-redirect). After adding the recipient, | |
059ec3d9 PH |
8109 | update the errors address in the recipients list. */ |
8110 | ||
d1f9fb42 JH |
8111 | if ( i >= recipients_count && t < recipients_count |
8112 | && Ustrcmp(otaddr->address, otaddr->parent->address) != 0) | |
059ec3d9 PH |
8113 | { |
8114 | DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n", | |
8115 | otaddr->address, otaddr->parent->address); | |
8116 | receive_add_recipient(otaddr->address, t); | |
d43cbe25 | 8117 | recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address; |
059ec3d9 PH |
8118 | tree_add_nonrecipient(otaddr->parent->address); |
8119 | update_spool = TRUE; | |
8120 | } | |
8121 | } | |
8122 | ||
8123 | /* Except for error messages, ensure that either the errors address for | |
8124 | this deferred address or, if there is none, the sender address, is on the | |
8125 | list of recipients for a warning message. */ | |
8126 | ||
d1f9fb42 JH |
8127 | if (sender_address[0]) |
8128 | { | |
8129 | uschar * s = addr->prop.errors_address; | |
8130 | if (!s) s = sender_address; | |
8131 | if (Ustrstr(recipients, s) == NULL) | |
8132 | recipients = string_sprintf("%s%s%s", recipients, | |
8133 | recipients[0] ? "," : "", s); | |
8134 | } | |
059ec3d9 PH |
8135 | } |
8136 | ||
8137 | /* Send a warning message if the conditions are right. If the condition check | |
8138 | fails because of a lookup defer, there is nothing we can do. The warning | |
8139 | is not sent. Another attempt will be made at the next delivery attempt (if | |
8140 | it also defers). */ | |
8141 | ||
8768d548 | 8142 | if ( !f.queue_2stage |
de6f74f2 | 8143 | && want_warning_msg |
ea97267c JH |
8144 | && ( !(addr_defer->dsn_flags & rf_dsnflags) |
8145 | || addr_defer->dsn_flags & rf_notify_delay | |
50dc7409 JH |
8146 | ) |
8147 | && delay_warning[1] > 0 | |
8148 | && sender_address[0] != 0 | |
d6c82d7b | 8149 | && ( !delay_warning_condition |
50dc7409 JH |
8150 | || expand_check_condition(delay_warning_condition, |
8151 | US"delay_warning", US"option") | |
8152 | ) | |
8153 | ) | |
059ec3d9 PH |
8154 | { |
8155 | int count; | |
8156 | int show_time; | |
32dfdf8b | 8157 | int queue_time = time(NULL) - received_time.tv_sec; |
059ec3d9 | 8158 | |
44416341 | 8159 | queue_time = test_harness_fudged_queue_time(queue_time); |
059ec3d9 PH |
8160 | |
8161 | /* See how many warnings we should have sent by now */ | |
8162 | ||
8163 | for (count = 0; count < delay_warning[1]; count++) | |
8164 | if (queue_time < delay_warning[count+2]) break; | |
8165 | ||
8166 | show_time = delay_warning[count+1]; | |
8167 | ||
8168 | if (count >= delay_warning[1]) | |
8169 | { | |
8170 | int extra; | |
8171 | int last_gap = show_time; | |
8172 | if (count > 1) last_gap -= delay_warning[count]; | |
8173 | extra = (queue_time - delay_warning[count+1])/last_gap; | |
8174 | show_time += last_gap * extra; | |
8175 | count += extra; | |
8176 | } | |
8177 | ||
8178 | DEBUG(D_deliver) | |
8179 | { | |
d6c829b9 JH |
8180 | debug_printf("time on queue = %s id %s addr %s\n", |
8181 | readconf_printtime(queue_time), message_id, addr_defer->address); | |
059ec3d9 PH |
8182 | debug_printf("warning counts: required %d done %d\n", count, |
8183 | warning_count); | |
8184 | } | |
8185 | ||
8186 | /* We have computed the number of warnings there should have been by now. | |
8187 | If there haven't been enough, send one, and up the count to what it should | |
8188 | have been. */ | |
8189 | ||
8190 | if (warning_count < count) | |
8191 | { | |
8192 | header_line *h; | |
8193 | int fd; | |
8194 | pid_t pid = child_open_exim(&fd); | |
8195 | ||
8196 | if (pid > 0) | |
8197 | { | |
8198 | uschar *wmf_text; | |
8199 | FILE *wmf = NULL; | |
8200 | FILE *f = fdopen(fd, "wb"); | |
45500060 | 8201 | uschar * bound; |
cab0c277 | 8202 | transport_ctx tctx = {{0}}; |
059ec3d9 | 8203 | |
c007c974 | 8204 | if (warn_message_file) |
d6c82d7b | 8205 | if (!(wmf = Ufopen(warn_message_file, "rb"))) |
059ec3d9 PH |
8206 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning " |
8207 | "message texts: %s", warn_message_file, strerror(errno)); | |
059ec3d9 PH |
8208 | |
8209 | warnmsg_recipients = recipients; | |
d6c82d7b JH |
8210 | warnmsg_delay = queue_time < 120*60 |
8211 | ? string_sprintf("%d minutes", show_time/60) | |
8212 | : string_sprintf("%d hours", show_time/3600); | |
059ec3d9 | 8213 | |
c007c974 | 8214 | if (errors_reply_to) |
059ec3d9 | 8215 | fprintf(f, "Reply-To: %s\n", errors_reply_to); |
456682f5 | 8216 | fprintf(f, "Auto-Submitted: auto-replied\n"); |
0e22dfd1 | 8217 | moan_write_from(f); |
059ec3d9 | 8218 | fprintf(f, "To: %s\n", recipients); |
d6c829b9 | 8219 | moan_write_references(f, NULL); |
059ec3d9 | 8220 | |
6c1c3d1d | 8221 | /* generated boundary string and output MIME-Headers */ |
45500060 | 8222 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 JH |
8223 | |
8224 | fprintf(f, "Content-Type: multipart/report;" | |
8225 | " report-type=delivery-status; boundary=%s\n" | |
8226 | "MIME-Version: 1.0\n", | |
45500060 | 8227 | bound); |
6c1c3d1d | 8228 | |
c007c974 | 8229 | if ((wmf_text = next_emf(wmf, US"header"))) |
059ec3d9 PH |
8230 | fprintf(f, "%s\n", wmf_text); |
8231 | else | |
8232 | fprintf(f, "Subject: Warning: message %s delayed %s\n\n", | |
8233 | message_id, warnmsg_delay); | |
8234 | ||
6c1c3d1d | 8235 | /* output human readable part as text/plain section */ |
c007c974 JH |
8236 | fprintf(f, "--%s\n" |
8237 | "Content-type: text/plain; charset=us-ascii\n\n", | |
45500060 | 8238 | bound); |
6c1c3d1d | 8239 | |
c007c974 JH |
8240 | if ((wmf_text = next_emf(wmf, US"intro"))) |
8241 | fprintf(f, "%s", CS wmf_text); | |
8242 | else | |
059ec3d9 PH |
8243 | { |
8244 | fprintf(f, | |
8245 | "This message was created automatically by mail delivery software.\n"); | |
8246 | ||
8247 | if (Ustrcmp(recipients, sender_address) == 0) | |
8248 | fprintf(f, | |
8249 | "A message that you sent has not yet been delivered to one or more of its\n" | |
8250 | "recipients after more than "); | |
8251 | ||
c007c974 JH |
8252 | else |
8253 | fprintf(f, | |
059ec3d9 PH |
8254 | "A message sent by\n\n <%s>\n\n" |
8255 | "has not yet been delivered to one or more of its recipients after more than \n", | |
c007c974 | 8256 | sender_address); |
059ec3d9 | 8257 | |
c007c974 JH |
8258 | fprintf(f, "%s on the queue on %s.\n\n" |
8259 | "The message identifier is: %s\n", | |
8260 | warnmsg_delay, primary_hostname, message_id); | |
059ec3d9 | 8261 | |
d6c82d7b | 8262 | for (h = header_list; h; h = h->next) |
059ec3d9 PH |
8263 | if (strncmpic(h->text, US"Subject:", 8) == 0) |
8264 | fprintf(f, "The subject of the message is: %s", h->text + 9); | |
8265 | else if (strncmpic(h->text, US"Date:", 5) == 0) | |
8266 | fprintf(f, "The date of the message is: %s", h->text + 6); | |
c007c974 | 8267 | fputc('\n', f); |
059ec3d9 PH |
8268 | |
8269 | fprintf(f, "The address%s to which the message has not yet been " | |
8270 | "delivered %s:\n", | |
c007c974 JH |
8271 | !addr_defer->next ? "" : "es", |
8272 | !addr_defer->next ? "is": "are"); | |
059ec3d9 PH |
8273 | } |
8274 | ||
447d236c | 8275 | /* List the addresses, with error information if allowed */ |
059ec3d9 | 8276 | |
c007c974 | 8277 | fputc('\n', f); |
81a559c8 | 8278 | for (address_item * addr = addr_defer; addr; addr = addr->next) |
059ec3d9 | 8279 | { |
447d236c PH |
8280 | if (print_address_information(addr, f, US" ", US"\n ", US"")) |
8281 | print_address_error(addr, f, US"Delay reason: "); | |
c007c974 | 8282 | fputc('\n', f); |
059ec3d9 | 8283 | } |
c007c974 | 8284 | fputc('\n', f); |
059ec3d9 PH |
8285 | |
8286 | /* Final text */ | |
8287 | ||
c007c974 | 8288 | if (wmf) |
059ec3d9 | 8289 | { |
c007c974 JH |
8290 | if ((wmf_text = next_emf(wmf, US"final"))) |
8291 | fprintf(f, "%s", CS wmf_text); | |
f1e894f3 | 8292 | (void)fclose(wmf); |
059ec3d9 PH |
8293 | } |
8294 | else | |
8295 | { | |
8296 | fprintf(f, | |
8297 | "No action is required on your part. Delivery attempts will continue for\n" | |
8298 | "some time, and this warning may be repeated at intervals if the message\n" | |
8299 | "remains undelivered. Eventually the mail delivery software will give up,\n" | |
8300 | "and when that happens, the message will be returned to you.\n"); | |
8301 | } | |
8302 | ||
6c1c3d1d | 8303 | /* output machine readable part */ |
c007c974 JH |
8304 | fprintf(f, "\n--%s\n" |
8305 | "Content-type: message/delivery-status\n\n" | |
8306 | "Reporting-MTA: dns; %s\n", | |
45500060 | 8307 | bound, |
c007c974 | 8308 | smtp_active_hostname); |
94431adb | 8309 | |
c007c974 JH |
8310 | |
8311 | if (dsn_envid) | |
8312 | { | |
6c1c3d1d WB |
8313 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
8314 | uschar *xdec_envid; | |
8315 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
8316 | fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid); | |
8317 | else | |
968178ac | 8318 | fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 8319 | } |
c007c974 | 8320 | fputc('\n', f); |
6c1c3d1d | 8321 | |
81a559c8 | 8322 | for (address_item * addr = addr_defer; addr; addr = addr->next) |
6c1c3d1d | 8323 | { |
436bda2a JH |
8324 | host_item * hu; |
8325 | ||
81a559c8 | 8326 | print_dsn_addr_action(f, addr, US"delayed", US"4.0.0"); |
436bda2a | 8327 | |
81a559c8 | 8328 | if ((hu = addr->host_used) && hu->name) |
21bc4865 | 8329 | { |
436bda2a | 8330 | fprintf(f, "Remote-MTA: dns; %s\n", hu->name); |
81a559c8 | 8331 | print_dsn_diagnostic_code(addr, f); |
21bc4865 | 8332 | } |
1c5b1499 | 8333 | fputc('\n', f); |
6c1c3d1d WB |
8334 | } |
8335 | ||
1c5b1499 | 8336 | fprintf(f, "--%s\n" |
c007c974 | 8337 | "Content-type: text/rfc822-headers\n\n", |
45500060 | 8338 | bound); |
6c1c3d1d WB |
8339 | |
8340 | fflush(f); | |
8341 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
42055a33 | 8342 | tctx.u.fd = fileno(f); |
6b46ecc6 | 8343 | tctx.options = topt_add_return_path | topt_no_body; |
6c1c3d1d WB |
8344 | transport_filter_argv = NULL; /* Just in case */ |
8345 | return_path = sender_address; /* In case not previously set */ | |
6b46ecc6 | 8346 | |
6c1c3d1d | 8347 | /* Write the original email out */ |
ee8b8090 | 8348 | /*XXX no checking for failure! buggy! */ |
42055a33 | 8349 | transport_write_message(&tctx, 0); |
6c1c3d1d WB |
8350 | fflush(f); |
8351 | ||
45500060 | 8352 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
8353 | |
8354 | fflush(f); | |
6c1c3d1d | 8355 | |
059ec3d9 PH |
8356 | /* Close and wait for child process to complete, without a timeout. |
8357 | If there's an error, don't update the count. */ | |
8358 | ||
f1e894f3 | 8359 | (void)fclose(f); |
059ec3d9 PH |
8360 | if (child_close(pid, 0) == 0) |
8361 | { | |
8362 | warning_count = count; | |
8363 | update_spool = TRUE; /* Ensure spool rewritten */ | |
8364 | } | |
8365 | } | |
8366 | } | |
8367 | } | |
8368 | ||
8369 | /* Clear deliver_domain */ | |
8370 | ||
8371 | deliver_domain = NULL; | |
8372 | ||
8373 | /* If this was a first delivery attempt, unset the first time flag, and | |
8374 | ensure that the spool gets updated. */ | |
8375 | ||
8768d548 | 8376 | if (f.deliver_firsttime) |
059ec3d9 | 8377 | { |
8768d548 | 8378 | f.deliver_firsttime = FALSE; |
059ec3d9 PH |
8379 | update_spool = TRUE; |
8380 | } | |
8381 | ||
8382 | /* If delivery was frozen and freeze_tell is set, generate an appropriate | |
8383 | message, unless the message is a local error message (to avoid loops). Then | |
8384 | log the freezing. If the text in "frozen_info" came from a system filter, | |
8385 | it has been escaped into printing characters so as not to mess up log lines. | |
8386 | For the "tell" message, we turn \n back into newline. Also, insert a newline | |
8387 | near the start instead of the ": " string. */ | |
8388 | ||
8768d548 | 8389 | if (f.deliver_freeze) |
059ec3d9 | 8390 | { |
8768d548 | 8391 | if (freeze_tell && freeze_tell[0] != 0 && !f.local_error_message) |
059ec3d9 PH |
8392 | { |
8393 | uschar *s = string_copy(frozen_info); | |
8394 | uschar *ss = Ustrstr(s, " by the system filter: "); | |
8395 | ||
8396 | if (ss != NULL) | |
8397 | { | |
8398 | ss[21] = '.'; | |
8399 | ss[22] = '\n'; | |
8400 | } | |
8401 | ||
8402 | ss = s; | |
8403 | while (*ss != 0) | |
8404 | { | |
8405 | if (*ss == '\\' && ss[1] == 'n') | |
8406 | { | |
8407 | *ss++ = ' '; | |
8408 | *ss++ = '\n'; | |
8409 | } | |
8410 | else ss++; | |
8411 | } | |
8412 | moan_tell_someone(freeze_tell, addr_defer, US"Message frozen", | |
8413 | "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id, | |
8414 | s, sender_address); | |
8415 | } | |
8416 | ||
8417 | /* Log freezing just before we update the -H file, to minimize the chance | |
8418 | of a race problem. */ | |
8419 | ||
8420 | deliver_msglog("*** Frozen%s\n", frozen_info); | |
8421 | log_write(0, LOG_MAIN, "Frozen%s", frozen_info); | |
8422 | } | |
8423 | ||
8424 | /* If there have been any updates to the non-recipients list, or other things | |
8425 | that get written to the spool, we must now update the spool header file so | |
8426 | that it has the right information for the next delivery attempt. If there | |
8427 | was more than one address being delivered, the header_change update is done | |
8428 | earlier, in case one succeeds and then something crashes. */ | |
8429 | ||
8430 | DEBUG(D_deliver) | |
8431 | debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n", | |
8768d548 | 8432 | update_spool, f.header_rewritten); |
059ec3d9 | 8433 | |
8768d548 | 8434 | if (update_spool || f.header_rewritten) |
059ec3d9 PH |
8435 | /* Panic-dies on error */ |
8436 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
8437 | } | |
8438 | ||
8439 | /* Finished with the message log. If the message is complete, it will have | |
8440 | been unlinked or renamed above. */ | |
8441 | ||
f1e894f3 | 8442 | if (message_logs) (void)fclose(message_log); |
059ec3d9 PH |
8443 | |
8444 | /* Now we can close and remove the journal file. Its only purpose is to record | |
8445 | successfully completed deliveries asap so that this information doesn't get | |
8446 | lost if Exim (or the machine) crashes. Forgetting about a failed delivery is | |
8447 | not serious, as trying it again is not harmful. The journal might not be open | |
8448 | if all addresses were deferred at routing or directing. Nevertheless, we must | |
8449 | remove it if it exists (may have been lying around from a crash during the | |
8450 | previous delivery attempt). We don't remove the journal if a delivery | |
8451 | subprocess failed to pass back delivery information; this is controlled by | |
8452 | the remove_journal flag. When the journal is left, we also don't move the | |
8453 | message off the main spool if frozen and the option is set. It should get moved | |
8454 | at the next attempt, after the journal has been inspected. */ | |
8455 | ||
f1e894f3 | 8456 | if (journal_fd >= 0) (void)close(journal_fd); |
059ec3d9 PH |
8457 | |
8458 | if (remove_journal) | |
8459 | { | |
41313d92 JH |
8460 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
8461 | ||
8462 | if (Uunlink(fname) < 0 && errno != ENOENT) | |
8463 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", fname, | |
059ec3d9 PH |
8464 | strerror(errno)); |
8465 | ||
4c04137d | 8466 | /* Move the message off the spool if requested */ |
059ec3d9 | 8467 | |
a7538db1 | 8468 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
8768d548 | 8469 | if (f.deliver_freeze && move_frozen_messages) |
059ec3d9 | 8470 | (void)spool_move_message(id, message_subdir, US"", US"F"); |
a7538db1 | 8471 | #endif |
059ec3d9 PH |
8472 | } |
8473 | ||
8474 | /* Closing the data file frees the lock; if the file has been unlinked it | |
8475 | will go away. Otherwise the message becomes available for another process | |
8476 | to try delivery. */ | |
8477 | ||
f1e894f3 | 8478 | (void)close(deliver_datafile); |
059ec3d9 PH |
8479 | deliver_datafile = -1; |
8480 | DEBUG(D_deliver) debug_printf("end delivery of %s\n", id); | |
9f01e50d JH |
8481 | #ifdef MEASURE_TIMING |
8482 | report_time_since(×tamp_startup, US"delivery end"); /* testcase 0005 */ | |
8483 | #endif | |
059ec3d9 PH |
8484 | |
8485 | /* It is unlikely that there will be any cached resources, since they are | |
8486 | released after routing, and in the delivery subprocesses. However, it's | |
8487 | possible for an expansion for something afterwards (for example, | |
8488 | expand_check_condition) to do a lookup. We must therefore be sure everything is | |
8489 | released. */ | |
8490 | ||
8491 | search_tidyup(); | |
faa05a93 | 8492 | acl_where = ACL_WHERE_UNKNOWN; |
059ec3d9 PH |
8493 | return final_yield; |
8494 | } | |
8495 | ||
476be7e2 JH |
8496 | |
8497 | ||
8498 | void | |
d85cdeb5 | 8499 | tcp_init(void) |
476be7e2 | 8500 | { |
10ac8d7f JH |
8501 | #ifdef EXIM_TFO_PROBE |
8502 | tfo_probe(); | |
8503 | #else | |
8768d548 | 8504 | f.tcp_fastopen_ok = TRUE; |
10ac8d7f | 8505 | #endif |
476be7e2 JH |
8506 | } |
8507 | ||
8508 | ||
a39bd74d JB |
8509 | uschar * |
8510 | deliver_get_sender_address (uschar * id) | |
8511 | { | |
dadff1d4 HSHR |
8512 | int rc; |
8513 | uschar * new_sender_address, | |
8514 | * save_sender_address; | |
8768d548 | 8515 | BOOL save_qr = f.queue_running; |
41313d92 | 8516 | uschar * spoolname; |
dadff1d4 | 8517 | |
789f8a4f JH |
8518 | /* make spool_open_datafile non-noisy on fail */ |
8519 | ||
8768d548 | 8520 | f.queue_running = TRUE; |
789f8a4f JH |
8521 | |
8522 | /* Side effect: message_subdir is set for the (possibly split) spool directory */ | |
8523 | ||
8524 | deliver_datafile = spool_open_datafile(id); | |
8768d548 | 8525 | f.queue_running = save_qr; |
789f8a4f | 8526 | if (deliver_datafile < 0) |
a39bd74d JB |
8527 | return NULL; |
8528 | ||
dadff1d4 HSHR |
8529 | /* Save and restore the global sender_address. I'm not sure if we should |
8530 | not save/restore all the other global variables too, because | |
8531 | spool_read_header() may change all of them. But OTOH, when this | |
8532 | deliver_get_sender_address() gets called, the current message is done | |
8533 | already and nobody needs the globals anymore. (HS12, 2015-08-21) */ | |
8534 | ||
41313d92 | 8535 | spoolname = string_sprintf("%s-H", id); |
dadff1d4 HSHR |
8536 | save_sender_address = sender_address; |
8537 | ||
8538 | rc = spool_read_header(spoolname, TRUE, TRUE); | |
8539 | ||
8540 | new_sender_address = sender_address; | |
8541 | sender_address = save_sender_address; | |
8542 | ||
8543 | if (rc != spool_read_OK) | |
a39bd74d JB |
8544 | return NULL; |
8545 | ||
dadff1d4 HSHR |
8546 | assert(new_sender_address); |
8547 | ||
a39bd74d JB |
8548 | (void)close(deliver_datafile); |
8549 | deliver_datafile = -1; | |
8550 | ||
dadff1d4 | 8551 | return new_sender_address; |
a39bd74d JB |
8552 | } |
8553 | ||
57cc2785 JH |
8554 | |
8555 | ||
8556 | void | |
8557 | delivery_re_exec(int exec_type) | |
8558 | { | |
cab0c277 | 8559 | uschar * where; |
57cc2785 | 8560 | |
74f1a423 | 8561 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 | 8562 | { |
48334568 | 8563 | int channel_fd = cutthrough.cctx.sock; |
57cc2785 JH |
8564 | |
8565 | smtp_peer_options = cutthrough.peer_options; | |
8566 | continue_sequence = 0; | |
8567 | ||
01603eec | 8568 | #ifndef DISABLE_TLS |
57cc2785 JH |
8569 | if (cutthrough.is_tls) |
8570 | { | |
48334568 JH |
8571 | int pfd[2], pid; |
8572 | ||
14de8063 | 8573 | smtp_peer_options |= OPTION_TLS; |
57cc2785 JH |
8574 | sending_ip_address = cutthrough.snd_ip; |
8575 | sending_port = cutthrough.snd_port; | |
8576 | ||
cab0c277 | 8577 | where = US"socketpair"; |
57cc2785 JH |
8578 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) != 0) |
8579 | goto fail; | |
8580 | ||
cab0c277 | 8581 | where = US"fork"; |
57cc2785 JH |
8582 | if ((pid = fork()) < 0) |
8583 | goto fail; | |
8584 | ||
6c454556 | 8585 | else if (pid == 0) /* child: fork again to totally disconnect */ |
5facbeaa | 8586 | { |
9f01e50d | 8587 | testharness_pause_ms(100); /* let parent debug out */ |
d097cc73 | 8588 | /* does not return */ |
74f1a423 JH |
8589 | smtp_proxy_tls(cutthrough.cctx.tls_ctx, big_buffer, big_buffer_size, |
8590 | pfd, 5*60); | |
5facbeaa | 8591 | } |
57cc2785 | 8592 | |
d097cc73 | 8593 | DEBUG(D_transport) debug_printf("proxy-proc inter-pid %d\n", pid); |
e47252f5 | 8594 | close(pfd[0]); |
60272099 | 8595 | waitpid(pid, NULL, 0); |
57cc2785 JH |
8596 | (void) close(channel_fd); /* release the client socket */ |
8597 | channel_fd = pfd[1]; | |
8598 | } | |
8599 | #endif | |
8600 | ||
8601 | transport_do_pass_socket(cutthrough.transport, cutthrough.host.name, | |
8602 | cutthrough.host.address, message_id, channel_fd); | |
8603 | } | |
8604 | else | |
8605 | { | |
ef698bf6 | 8606 | cancel_cutthrough_connection(TRUE, US"non-continued delivery"); |
57cc2785 JH |
8607 | (void) child_exec_exim(exec_type, FALSE, NULL, FALSE, 2, US"-Mc", message_id); |
8608 | } | |
cab0c277 | 8609 | return; /* compiler quietening; control does not reach here. */ |
57cc2785 | 8610 | |
01603eec | 8611 | #ifndef DISABLE_TLS |
57cc2785 JH |
8612 | fail: |
8613 | log_write(0, | |
8614 | LOG_MAIN | (exec_type == CEE_EXEC_EXIT ? LOG_PANIC : LOG_PANIC_DIE), | |
cab0c277 | 8615 | "delivery re-exec %s failed: %s", where, strerror(errno)); |
57cc2785 JH |
8616 | |
8617 | /* Get here if exec_type == CEE_EXEC_EXIT. | |
8618 | Note: this must be _exit(), not exit(). */ | |
8619 | ||
8620 | _exit(EX_EXECFAILED); | |
13c7874e | 8621 | #endif |
57cc2785 JH |
8622 | } |
8623 | ||
67d81c10 JH |
8624 | /* vi: aw ai sw=2 |
8625 | */ | |
059ec3d9 | 8626 | /* End of deliver.c */ |