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; | |
32dfdf8b | 432 | addr2->delivery_usec = addr->delivery_usec; |
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); | |
4e48d56c | 1224 | #ifdef SUPPORT_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)) |
32dfdf8b | 1267 | { |
f2ed27cf | 1268 | struct timeval diff = {.tv_sec = addr->more_errno, .tv_usec = addr->delivery_usec}; |
acec9514 | 1269 | g = string_append(g, 2, US" DT=", string_timediff(&diff)); |
32dfdf8b | 1270 | } |
e4bdf652 JH |
1271 | |
1272 | /* string_cat() always leaves room for the terminator. Release the | |
1273 | store we used to build the line after writing it. */ | |
1274 | ||
acec9514 | 1275 | log_write(0, flags, "%s", string_from_gstring(g)); |
d68218c7 | 1276 | |
0cbf2b82 | 1277 | #ifndef DISABLE_EVENT |
774ef2d7 | 1278 | if (!msg) msg_event_raise(US"msg:delivery", addr); |
d68218c7 | 1279 | #endif |
14a465c3 | 1280 | |
e4bdf652 JH |
1281 | store_reset(reset_point); |
1282 | return; | |
1283 | } | |
1284 | ||
1285 | ||
1286 | ||
5dac72a7 JH |
1287 | static void |
1288 | deferral_log(address_item * addr, uschar * now, | |
1289 | int logflags, uschar * driver_name, uschar * driver_kind) | |
1290 | { | |
f3ebb786 JH |
1291 | rmark reset_point = store_mark(); |
1292 | gstring * g = string_get(256); | |
5dac72a7 JH |
1293 | |
1294 | /* Build up the line that is used for both the message log and the main | |
1295 | log. */ | |
1296 | ||
5dac72a7 JH |
1297 | /* Create the address string for logging. Must not do this earlier, because |
1298 | an OK result may be changed to FAIL when a pipe returns text. */ | |
1299 | ||
acec9514 | 1300 | g = string_log_address(g, addr, LOGGING(all_parents), FALSE); |
5dac72a7 JH |
1301 | |
1302 | if (*queue_name) | |
acec9514 | 1303 | g = string_append(g, 2, US" Q=", queue_name); |
5dac72a7 JH |
1304 | |
1305 | /* Either driver_name contains something and driver_kind contains | |
1306 | " router" or " transport" (note the leading space), or driver_name is | |
1307 | a null string and driver_kind contains "routing" without the leading | |
1308 | space, if all routing has been deferred. When a domain has been held, | |
1309 | so nothing has been done at all, both variables contain null strings. */ | |
1310 | ||
1311 | if (driver_name) | |
1312 | { | |
1313 | if (driver_kind[1] == 't' && addr->router) | |
acec9514 | 1314 | g = string_append(g, 2, US" R=", addr->router->name); |
d12746bc | 1315 | g = string_fmt_append(g, " %c=%s", toupper(driver_kind[1]), driver_name); |
5dac72a7 JH |
1316 | } |
1317 | else if (driver_kind) | |
acec9514 | 1318 | g = string_append(g, 2, US" ", driver_kind); |
5dac72a7 | 1319 | |
d12746bc | 1320 | g = string_fmt_append(g, " defer (%d)", addr->basic_errno); |
5dac72a7 JH |
1321 | |
1322 | if (addr->basic_errno > 0) | |
acec9514 | 1323 | g = string_append(g, 2, US": ", |
5dac72a7 JH |
1324 | US strerror(addr->basic_errno)); |
1325 | ||
1326 | if (addr->host_used) | |
1327 | { | |
acec9514 | 1328 | g = string_append(g, 5, |
5dac72a7 JH |
1329 | US" H=", addr->host_used->name, |
1330 | US" [", addr->host_used->address, US"]"); | |
1331 | if (LOGGING(outgoing_port)) | |
1332 | { | |
1333 | int port = addr->host_used->port; | |
d12746bc | 1334 | g = string_fmt_append(g, ":%d", port == PORT_NONE ? 25 : port); |
5dac72a7 JH |
1335 | } |
1336 | } | |
1337 | ||
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 | |
acec9514 | 1417 | (void) string_from_gstring(g); |
5dac72a7 JH |
1418 | |
1419 | /* Do the logging. For the message log, "routing failed" for those cases, | |
1420 | just to make it clearer. */ | |
1421 | ||
1422 | if (driver_kind) | |
acec9514 | 1423 | deliver_msglog("%s %s failed for %s\n", now, driver_kind, g->s); |
5dac72a7 | 1424 | else |
acec9514 | 1425 | deliver_msglog("%s %s\n", now, g->s); |
5dac72a7 | 1426 | |
acec9514 | 1427 | log_write(0, LOG_MAIN, "** %s", g->s); |
5dac72a7 | 1428 | |
5dac72a7 JH |
1429 | store_reset(reset_point); |
1430 | return; | |
1431 | } | |
1432 | ||
1433 | ||
1434 | ||
059ec3d9 PH |
1435 | /************************************************* |
1436 | * Actions at the end of handling an address * | |
1437 | *************************************************/ | |
1438 | ||
1439 | /* This is a function for processing a single address when all that can be done | |
1440 | with it has been done. | |
1441 | ||
1442 | Arguments: | |
1443 | addr points to the address block | |
1444 | result the result of the delivery attempt | |
1445 | logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC) | |
1446 | driver_type indicates which type of driver (transport, or router) was last | |
1447 | to process the address | |
1448 | logchar '=' or '-' for use when logging deliveries with => or -> | |
1449 | ||
1450 | Returns: nothing | |
1451 | */ | |
1452 | ||
1453 | static void | |
1454 | post_process_one(address_item *addr, int result, int logflags, int driver_type, | |
1455 | int logchar) | |
1456 | { | |
1457 | uschar *now = tod_stamp(tod_log); | |
1458 | uschar *driver_kind = NULL; | |
1459 | uschar *driver_name = NULL; | |
059ec3d9 | 1460 | |
059ec3d9 PH |
1461 | DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result); |
1462 | ||
1463 | /* Set up driver kind and name for logging. Disable logging if the router or | |
1464 | transport has disabled it. */ | |
1465 | ||
ba936fb8 | 1466 | if (driver_type == EXIM_DTYPE_TRANSPORT) |
059ec3d9 | 1467 | { |
d6c82d7b | 1468 | if (addr->transport) |
059ec3d9 PH |
1469 | { |
1470 | driver_name = addr->transport->name; | |
1471 | driver_kind = US" transport"; | |
8768d548 | 1472 | f.disable_logging = addr->transport->disable_logging; |
059ec3d9 PH |
1473 | } |
1474 | else driver_kind = US"transporting"; | |
1475 | } | |
ba936fb8 | 1476 | else if (driver_type == EXIM_DTYPE_ROUTER) |
059ec3d9 | 1477 | { |
d6c82d7b | 1478 | if (addr->router) |
059ec3d9 PH |
1479 | { |
1480 | driver_name = addr->router->name; | |
1481 | driver_kind = US" router"; | |
8768d548 | 1482 | f.disable_logging = addr->router->disable_logging; |
059ec3d9 PH |
1483 | } |
1484 | else driver_kind = US"routing"; | |
1485 | } | |
1486 | ||
1487 | /* If there's an error message set, ensure that it contains only printing | |
1488 | characters - it should, but occasionally things slip in and this at least | |
49c2d5ea PH |
1489 | stops the log format from getting wrecked. We also scan the message for an LDAP |
1490 | expansion item that has a password setting, and flatten the password. This is a | |
1491 | fudge, but I don't know a cleaner way of doing this. (If the item is badly | |
1492 | malformed, it won't ever have gone near LDAP.) */ | |
059ec3d9 | 1493 | |
d6c82d7b | 1494 | if (addr->message) |
49c2d5ea | 1495 | { |
55414b25 | 1496 | const uschar * s = string_printing(addr->message); |
f42deca9 JH |
1497 | |
1498 | /* deconst cast ok as string_printing known to have alloc'n'copied */ | |
1499 | addr->message = expand_hide_passwords(US s); | |
49c2d5ea | 1500 | } |
059ec3d9 PH |
1501 | |
1502 | /* If we used a transport that has one of the "return_output" options set, and | |
1503 | if it did in fact generate some output, then for return_output we treat the | |
1504 | message as failed if it was not already set that way, so that the output gets | |
1505 | returned to the sender, provided there is a sender to send it to. For | |
1506 | return_fail_output, do this only if the delivery failed. Otherwise we just | |
1507 | unlink the file, and remove the name so that if the delivery failed, we don't | |
1508 | try to send back an empty or unwanted file. The log_output options operate only | |
1509 | on a non-empty file. | |
1510 | ||
1511 | In any case, we close the message file, because we cannot afford to leave a | |
1512 | file-descriptor for one address while processing (maybe very many) others. */ | |
1513 | ||
d6c82d7b | 1514 | if (addr->return_file >= 0 && addr->return_filename) |
059ec3d9 PH |
1515 | { |
1516 | BOOL return_output = FALSE; | |
1517 | struct stat statbuf; | |
54fc8428 | 1518 | (void)EXIMfsync(addr->return_file); |
059ec3d9 PH |
1519 | |
1520 | /* If there is no output, do nothing. */ | |
1521 | ||
1522 | if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0) | |
1523 | { | |
1524 | transport_instance *tb = addr->transport; | |
1525 | ||
1526 | /* Handle logging options */ | |
1527 | ||
d6c82d7b JH |
1528 | if ( tb->log_output |
1529 | || result == FAIL && tb->log_fail_output | |
1530 | || result == DEFER && tb->log_defer_output | |
1531 | ) | |
059ec3d9 PH |
1532 | { |
1533 | uschar *s; | |
1534 | FILE *f = Ufopen(addr->return_filename, "rb"); | |
d6c82d7b | 1535 | if (!f) |
059ec3d9 PH |
1536 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output " |
1537 | "from %s transport: %s", addr->return_filename, tb->name, | |
1538 | strerror(errno)); | |
1539 | else | |
d6c82d7b | 1540 | if ((s = US Ufgets(big_buffer, big_buffer_size, f))) |
059ec3d9 PH |
1541 | { |
1542 | uschar *p = big_buffer + Ustrlen(big_buffer); | |
55414b25 | 1543 | const uschar * sp; |
059ec3d9 PH |
1544 | while (p > big_buffer && isspace(p[-1])) p--; |
1545 | *p = 0; | |
55414b25 | 1546 | sp = string_printing(big_buffer); |
059ec3d9 | 1547 | log_write(0, LOG_MAIN, "<%s>: %s transport output: %s", |
55414b25 | 1548 | addr->address, tb->name, sp); |
059ec3d9 | 1549 | } |
0e8aed8a | 1550 | (void)fclose(f); |
059ec3d9 PH |
1551 | } |
1552 | ||
1553 | /* Handle returning options, but only if there is an address to return | |
1554 | the text to. */ | |
1555 | ||
d6c82d7b | 1556 | if (sender_address[0] != 0 || addr->prop.errors_address) |
059ec3d9 PH |
1557 | if (tb->return_output) |
1558 | { | |
1559 | addr->transport_return = result = FAIL; | |
d6c82d7b | 1560 | if (addr->basic_errno == 0 && !addr->message) |
059ec3d9 PH |
1561 | addr->message = US"return message generated"; |
1562 | return_output = TRUE; | |
1563 | } | |
1564 | else | |
1565 | if (tb->return_fail_output && result == FAIL) return_output = TRUE; | |
059ec3d9 PH |
1566 | } |
1567 | ||
1568 | /* Get rid of the file unless it might be returned, but close it in | |
1569 | all cases. */ | |
1570 | ||
1571 | if (!return_output) | |
1572 | { | |
1573 | Uunlink(addr->return_filename); | |
1574 | addr->return_filename = NULL; | |
1575 | addr->return_file = -1; | |
1576 | } | |
1577 | ||
f1e894f3 | 1578 | (void)close(addr->return_file); |
059ec3d9 PH |
1579 | } |
1580 | ||
9d1c15ef | 1581 | /* The success case happens only after delivery by a transport. */ |
059ec3d9 PH |
1582 | |
1583 | if (result == OK) | |
1584 | { | |
1585 | addr->next = addr_succeed; | |
1586 | addr_succeed = addr; | |
1587 | ||
1588 | /* Call address_done() to ensure that we don't deliver to this address again, | |
1589 | and write appropriate things to the message log. If it is a child address, we | |
1590 | call child_done() to scan the ancestors and mark them complete if this is the | |
1591 | last child to complete. */ | |
1592 | ||
1593 | address_done(addr, now); | |
1594 | DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address); | |
1595 | ||
d6c82d7b | 1596 | if (!addr->parent) |
059ec3d9 PH |
1597 | deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address, |
1598 | driver_name, driver_kind); | |
059ec3d9 PH |
1599 | else |
1600 | { | |
1601 | deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address, | |
1602 | addr->parent->address, driver_name, driver_kind); | |
1603 | child_done(addr, now); | |
1604 | } | |
1605 | ||
774ef2d7 | 1606 | /* Certificates for logging (via events) */ |
01603eec | 1607 | #ifndef DISABLE_TLS |
9d1c15ef JH |
1608 | tls_out.ourcert = addr->ourcert; |
1609 | addr->ourcert = NULL; | |
1610 | tls_out.peercert = addr->peercert; | |
1611 | addr->peercert = NULL; | |
018058b2 | 1612 | |
018058b2 JH |
1613 | tls_out.cipher = addr->cipher; |
1614 | tls_out.peerdn = addr->peerdn; | |
1615 | tls_out.ocsp = addr->ocsp; | |
c0635b6d | 1616 | # ifdef SUPPORT_DANE |
83b27293 JH |
1617 | tls_out.dane_verified = testflag(addr, af_dane_verified); |
1618 | # endif | |
a7538db1 | 1619 | #endif |
9d1c15ef | 1620 | |
817d9f57 | 1621 | delivery_log(LOG_MAIN, addr, logchar, NULL); |
9d1c15ef | 1622 | |
01603eec | 1623 | #ifndef DISABLE_TLS |
790fbb71 JH |
1624 | tls_free_cert(&tls_out.ourcert); |
1625 | tls_free_cert(&tls_out.peercert); | |
018058b2 JH |
1626 | tls_out.cipher = NULL; |
1627 | tls_out.peerdn = NULL; | |
1628 | tls_out.ocsp = OCSP_NOT_REQ; | |
c0635b6d | 1629 | # ifdef SUPPORT_DANE |
83b27293 JH |
1630 | tls_out.dane_verified = FALSE; |
1631 | # endif | |
a7538db1 | 1632 | #endif |
059ec3d9 PH |
1633 | } |
1634 | ||
1635 | ||
1636 | /* Soft failure, or local delivery process failed; freezing may be | |
1637 | requested. */ | |
1638 | ||
1639 | else if (result == DEFER || result == PANIC) | |
1640 | { | |
1641 | if (result == PANIC) logflags |= LOG_PANIC; | |
1642 | ||
1643 | /* This puts them on the chain in reverse order. Do not change this, because | |
1644 | the code for handling retries assumes that the one with the retry | |
1645 | information is last. */ | |
1646 | ||
1647 | addr->next = addr_defer; | |
1648 | addr_defer = addr; | |
1649 | ||
1650 | /* The only currently implemented special action is to freeze the | |
1651 | message. Logging of this is done later, just before the -H file is | |
1652 | updated. */ | |
1653 | ||
1654 | if (addr->special_action == SPECIAL_FREEZE) | |
1655 | { | |
8768d548 | 1656 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
1657 | deliver_frozen_at = time(NULL); |
1658 | update_spool = TRUE; | |
1659 | } | |
1660 | ||
1661 | /* If doing a 2-stage queue run, we skip writing to either the message | |
1662 | log or the main log for SMTP defers. */ | |
1663 | ||
8768d548 | 1664 | if (!f.queue_2stage || addr->basic_errno != 0) |
5dac72a7 | 1665 | deferral_log(addr, now, logflags, driver_name, driver_kind); |
059ec3d9 PH |
1666 | } |
1667 | ||
1668 | ||
1669 | /* Hard failure. If there is an address to which an error message can be sent, | |
1670 | put this address on the failed list. If not, put it on the deferred list and | |
1671 | freeze the mail message for human attention. The latter action can also be | |
1672 | explicitly requested by a router or transport. */ | |
1673 | ||
1674 | else | |
1675 | { | |
1676 | /* If this is a delivery error, or a message for which no replies are | |
1677 | wanted, and the message's age is greater than ignore_bounce_errors_after, | |
1678 | force the af_ignore_error flag. This will cause the address to be discarded | |
1679 | later (with a log entry). */ | |
1680 | ||
10c50704 | 1681 | if (!*sender_address && message_age >= ignore_bounce_errors_after) |
7eb0e5d2 | 1682 | addr->prop.ignore_error = TRUE; |
059ec3d9 PH |
1683 | |
1684 | /* Freeze the message if requested, or if this is a bounce message (or other | |
652e1b65 PH |
1685 | message with null sender) and this address does not have its own errors |
1686 | address. However, don't freeze if errors are being ignored. The actual code | |
1687 | to ignore occurs later, instead of sending a message. Logging of freezing | |
1688 | occurs later, just before writing the -H file. */ | |
059ec3d9 | 1689 | |
7eb0e5d2 | 1690 | if ( !addr->prop.ignore_error |
d6c82d7b JH |
1691 | && ( addr->special_action == SPECIAL_FREEZE |
1692 | || (sender_address[0] == 0 && !addr->prop.errors_address) | |
1693 | ) ) | |
059ec3d9 | 1694 | { |
d6c82d7b JH |
1695 | frozen_info = addr->special_action == SPECIAL_FREEZE |
1696 | ? US"" | |
8768d548 | 1697 | : f.sender_local && !f.local_error_message |
d6c82d7b JH |
1698 | ? US" (message created with -f <>)" |
1699 | : US" (delivery error message)"; | |
8768d548 | 1700 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
1701 | deliver_frozen_at = time(NULL); |
1702 | update_spool = TRUE; | |
1703 | ||
1704 | /* The address is put on the defer rather than the failed queue, because | |
1705 | the message is being retained. */ | |
1706 | ||
1707 | addr->next = addr_defer; | |
1708 | addr_defer = addr; | |
1709 | } | |
1710 | ||
1711 | /* Don't put the address on the nonrecipients tree yet; wait until an | |
1712 | error message has been successfully sent. */ | |
1713 | ||
1714 | else | |
1715 | { | |
1716 | addr->next = addr_failed; | |
1717 | addr_failed = addr; | |
1718 | } | |
1719 | ||
5dac72a7 | 1720 | failure_log(addr, driver_name ? NULL : driver_kind, now); |
059ec3d9 PH |
1721 | } |
1722 | ||
1723 | /* Ensure logging is turned on again in all cases */ | |
1724 | ||
8768d548 | 1725 | f.disable_logging = FALSE; |
059ec3d9 PH |
1726 | } |
1727 | ||
1728 | ||
1729 | ||
1730 | ||
1731 | /************************************************* | |
1732 | * Address-independent error * | |
1733 | *************************************************/ | |
1734 | ||
1735 | /* This function is called when there's an error that is not dependent on a | |
1736 | particular address, such as an expansion string failure. It puts the error into | |
1737 | all the addresses in a batch, logs the incident on the main and panic logs, and | |
1738 | clears the expansions. It is mostly called from local_deliver(), but can be | |
1739 | called for a remote delivery via findugid(). | |
1740 | ||
1741 | Arguments: | |
1742 | logit TRUE if (MAIN+PANIC) logging required | |
1743 | addr the first of the chain of addresses | |
1744 | code the error code | |
1745 | format format string for error message, or NULL if already set in addr | |
1746 | ... arguments for the format | |
1747 | ||
1748 | Returns: nothing | |
1749 | */ | |
1750 | ||
1751 | static void | |
1752 | common_error(BOOL logit, address_item *addr, int code, uschar *format, ...) | |
1753 | { | |
059ec3d9 PH |
1754 | addr->basic_errno = code; |
1755 | ||
d6c82d7b | 1756 | if (format) |
059ec3d9 PH |
1757 | { |
1758 | va_list ap; | |
d12746bc JH |
1759 | gstring * g; |
1760 | ||
059ec3d9 | 1761 | va_start(ap, format); |
f3ebb786 | 1762 | g = string_vformat(NULL, SVFMT_EXTEND|SVFMT_REBUFFER, CS format, ap); |
059ec3d9 | 1763 | va_end(ap); |
d12746bc | 1764 | addr->message = string_from_gstring(g); |
059ec3d9 PH |
1765 | } |
1766 | ||
d7978c0f | 1767 | for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next) |
059ec3d9 PH |
1768 | { |
1769 | addr2->basic_errno = code; | |
1770 | addr2->message = addr->message; | |
1771 | } | |
1772 | ||
1773 | if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message); | |
1774 | deliver_set_expansions(NULL); | |
1775 | } | |
1776 | ||
1777 | ||
1778 | ||
1779 | ||
1780 | /************************************************* | |
1781 | * Check a "never users" list * | |
1782 | *************************************************/ | |
1783 | ||
1784 | /* This function is called to check whether a uid is on one of the two "never | |
1785 | users" lists. | |
1786 | ||
1787 | Arguments: | |
1788 | uid the uid to be checked | |
1789 | nusers the list to be scanned; the first item in the list is the count | |
1790 | ||
1791 | Returns: TRUE if the uid is on the list | |
1792 | */ | |
1793 | ||
1794 | static BOOL | |
1795 | check_never_users(uid_t uid, uid_t *nusers) | |
1796 | { | |
d6c82d7b | 1797 | if (!nusers) return FALSE; |
d7978c0f | 1798 | for (int i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE; |
059ec3d9 PH |
1799 | return FALSE; |
1800 | } | |
1801 | ||
1802 | ||
1803 | ||
1804 | /************************************************* | |
1805 | * Find uid and gid for a transport * | |
1806 | *************************************************/ | |
1807 | ||
1808 | /* This function is called for both local and remote deliveries, to find the | |
1809 | uid/gid under which to run the delivery. The values are taken preferentially | |
1810 | from the transport (either explicit or deliver_as_creator), then from the | |
1811 | address (i.e. the router), and if nothing is set, the exim uid/gid are used. If | |
1812 | the resulting uid is on the "never_users" or the "fixed_never_users" list, a | |
1813 | panic error is logged, and the function fails (which normally leads to delivery | |
1814 | deferral). | |
1815 | ||
1816 | Arguments: | |
1817 | addr the address (possibly a chain) | |
1818 | tp the transport | |
1819 | uidp pointer to uid field | |
1820 | gidp pointer to gid field | |
1821 | igfp pointer to the use_initgroups field | |
1822 | ||
1823 | Returns: FALSE if failed - error has been set in address(es) | |
1824 | */ | |
1825 | ||
1826 | static BOOL | |
1827 | findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp, | |
1828 | BOOL *igfp) | |
1829 | { | |
d6c82d7b | 1830 | uschar *nuname; |
059ec3d9 PH |
1831 | BOOL gid_set = FALSE; |
1832 | ||
1833 | /* Default initgroups flag comes from the transport */ | |
1834 | ||
1835 | *igfp = tp->initgroups; | |
1836 | ||
1837 | /* First see if there's a gid on the transport, either fixed or expandable. | |
1838 | The expanding function always logs failure itself. */ | |
1839 | ||
1840 | if (tp->gid_set) | |
1841 | { | |
1842 | *gidp = tp->gid; | |
1843 | gid_set = TRUE; | |
1844 | } | |
d6c82d7b | 1845 | else if (tp->expand_gid) |
059ec3d9 | 1846 | { |
d6c82d7b JH |
1847 | if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp, |
1848 | &(addr->message))) | |
059ec3d9 PH |
1849 | { |
1850 | common_error(FALSE, addr, ERRNO_GIDFAIL, NULL); | |
1851 | return FALSE; | |
1852 | } | |
d6c82d7b | 1853 | gid_set = TRUE; |
059ec3d9 PH |
1854 | } |
1855 | ||
911f6fde PH |
1856 | /* If the transport did not set a group, see if the router did. */ |
1857 | ||
1858 | if (!gid_set && testflag(addr, af_gid_set)) | |
1859 | { | |
1860 | *gidp = addr->gid; | |
1861 | gid_set = TRUE; | |
1862 | } | |
1863 | ||
059ec3d9 PH |
1864 | /* Pick up a uid from the transport if one is set. */ |
1865 | ||
1866 | if (tp->uid_set) *uidp = tp->uid; | |
1867 | ||
1868 | /* Otherwise, try for an expandable uid field. If it ends up as a numeric id, | |
1869 | it does not provide a passwd value from which a gid can be taken. */ | |
1870 | ||
d6c82d7b | 1871 | else if (tp->expand_uid) |
059ec3d9 PH |
1872 | { |
1873 | struct passwd *pw; | |
1874 | if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw, | |
1875 | uidp, &(addr->message))) | |
1876 | { | |
1877 | common_error(FALSE, addr, ERRNO_UIDFAIL, NULL); | |
1878 | return FALSE; | |
1879 | } | |
d6c82d7b | 1880 | if (!gid_set && pw) |
059ec3d9 PH |
1881 | { |
1882 | *gidp = pw->pw_gid; | |
1883 | gid_set = TRUE; | |
1884 | } | |
1885 | } | |
1886 | ||
1887 | /* If the transport doesn't set the uid, test the deliver_as_creator flag. */ | |
1888 | ||
1889 | else if (tp->deliver_as_creator) | |
1890 | { | |
1891 | *uidp = originator_uid; | |
1892 | if (!gid_set) | |
1893 | { | |
1894 | *gidp = originator_gid; | |
1895 | gid_set = TRUE; | |
1896 | } | |
1897 | } | |
1898 | ||
911f6fde PH |
1899 | /* Otherwise see if the address specifies the uid and if so, take it and its |
1900 | initgroups flag. */ | |
059ec3d9 PH |
1901 | |
1902 | else if (testflag(addr, af_uid_set)) | |
1903 | { | |
1904 | *uidp = addr->uid; | |
1905 | *igfp = testflag(addr, af_initgroups); | |
059ec3d9 PH |
1906 | } |
1907 | ||
1908 | /* Nothing has specified the uid - default to the Exim user, and group if the | |
1909 | gid is not set. */ | |
1910 | ||
1911 | else | |
1912 | { | |
1913 | *uidp = exim_uid; | |
1914 | if (!gid_set) | |
1915 | { | |
1916 | *gidp = exim_gid; | |
1917 | gid_set = TRUE; | |
1918 | } | |
1919 | } | |
1920 | ||
911f6fde PH |
1921 | /* If no gid is set, it is a disaster. We default to the Exim gid only if |
1922 | defaulting to the Exim uid. In other words, if the configuration has specified | |
1923 | a uid, it must also provide a gid. */ | |
059ec3d9 PH |
1924 | |
1925 | if (!gid_set) | |
1926 | { | |
1927 | common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for " | |
1928 | "%s transport", tp->name); | |
1929 | return FALSE; | |
1930 | } | |
1931 | ||
1932 | /* Check that the uid is not on the lists of banned uids that may not be used | |
1933 | for delivery processes. */ | |
1934 | ||
d6c82d7b JH |
1935 | nuname = check_never_users(*uidp, never_users) |
1936 | ? US"never_users" | |
1937 | : check_never_users(*uidp, fixed_never_users) | |
1938 | ? US"fixed_never_users" | |
1939 | : NULL; | |
1940 | if (nuname) | |
059ec3d9 PH |
1941 | { |
1942 | common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport " | |
1943 | "is on the %s list", (long int)(*uidp), tp->name, nuname); | |
1944 | return FALSE; | |
1945 | } | |
1946 | ||
1947 | /* All is well */ | |
1948 | ||
1949 | return TRUE; | |
1950 | } | |
1951 | ||
1952 | ||
1953 | ||
1954 | ||
1955 | /************************************************* | |
1956 | * Check the size of a message for a transport * | |
1957 | *************************************************/ | |
1958 | ||
1959 | /* Checks that the message isn't too big for the selected transport. | |
1960 | This is called only when it is known that the limit is set. | |
1961 | ||
1962 | Arguments: | |
1963 | tp the transport | |
1964 | addr the (first) address being delivered | |
1965 | ||
1966 | Returns: OK | |
1967 | DEFER expansion failed or did not yield an integer | |
1968 | FAIL message too big | |
1969 | */ | |
1970 | ||
1971 | int | |
1972 | check_message_size(transport_instance *tp, address_item *addr) | |
1973 | { | |
1974 | int rc = OK; | |
1975 | int size_limit; | |
1976 | ||
1977 | deliver_set_expansions(addr); | |
d45b1de8 | 1978 | size_limit = expand_string_integer(tp->message_size_limit, TRUE); |
059ec3d9 PH |
1979 | deliver_set_expansions(NULL); |
1980 | ||
d6c82d7b | 1981 | if (expand_string_message) |
059ec3d9 PH |
1982 | { |
1983 | rc = DEFER; | |
d6c82d7b JH |
1984 | addr->message = size_limit == -1 |
1985 | ? string_sprintf("failed to expand message_size_limit " | |
1986 | "in %s transport: %s", tp->name, expand_string_message) | |
1987 | : string_sprintf("invalid message_size_limit " | |
059ec3d9 PH |
1988 | "in %s transport: %s", tp->name, expand_string_message); |
1989 | } | |
1990 | else if (size_limit > 0 && message_size > size_limit) | |
1991 | { | |
1992 | rc = FAIL; | |
1993 | addr->message = | |
1994 | string_sprintf("message is too big (transport limit = %d)", | |
1995 | size_limit); | |
1996 | } | |
1997 | ||
1998 | return rc; | |
1999 | } | |
2000 | ||
2001 | ||
2002 | ||
2003 | /************************************************* | |
2004 | * Transport-time check for a previous delivery * | |
2005 | *************************************************/ | |
2006 | ||
2007 | /* Check that this base address hasn't previously been delivered to its routed | |
c2c19e9d PH |
2008 | transport. If it has been delivered, mark it done. The check is necessary at |
2009 | delivery time in order to handle homonymic addresses correctly in cases where | |
2010 | the pattern of redirection changes between delivery attempts (so the unique | |
2011 | fields change). Non-homonymic previous delivery is detected earlier, at routing | |
2012 | time (which saves unnecessary routing). | |
2013 | ||
2014 | Arguments: | |
2015 | addr the address item | |
2016 | testing TRUE if testing wanted only, without side effects | |
059ec3d9 | 2017 | |
059ec3d9 PH |
2018 | Returns: TRUE if previously delivered by the transport |
2019 | */ | |
2020 | ||
2021 | static BOOL | |
c2c19e9d | 2022 | previously_transported(address_item *addr, BOOL testing) |
059ec3d9 | 2023 | { |
f3ebb786 | 2024 | uschar * s = string_sprintf("%s/%s", |
059ec3d9 PH |
2025 | addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name); |
2026 | ||
f3ebb786 | 2027 | if (tree_search(tree_nonrecipients, s) != 0) |
059ec3d9 PH |
2028 | { |
2029 | DEBUG(D_deliver|D_route|D_transport) | |
2030 | debug_printf("%s was previously delivered (%s transport): discarded\n", | |
2031 | addr->address, addr->transport->name); | |
c2c19e9d | 2032 | if (!testing) child_done(addr, tod_stamp(tod_log)); |
059ec3d9 PH |
2033 | return TRUE; |
2034 | } | |
2035 | ||
2036 | return FALSE; | |
2037 | } | |
2038 | ||
2039 | ||
2040 | ||
064a94c9 PH |
2041 | /****************************************************** |
2042 | * Check for a given header in a header string * | |
2043 | ******************************************************/ | |
2044 | ||
2045 | /* This function is used when generating quota warnings. The configuration may | |
2046 | specify any header lines it likes in quota_warn_message. If certain of them are | |
2047 | missing, defaults are inserted, so we need to be able to test for the presence | |
2048 | of a given header. | |
2049 | ||
2050 | Arguments: | |
2051 | hdr the required header name | |
2052 | hstring the header string | |
2053 | ||
2054 | Returns: TRUE the header is in the string | |
2055 | FALSE the header is not in the string | |
2056 | */ | |
2057 | ||
2058 | static BOOL | |
2059 | contains_header(uschar *hdr, uschar *hstring) | |
2060 | { | |
2061 | int len = Ustrlen(hdr); | |
2062 | uschar *p = hstring; | |
2063 | while (*p != 0) | |
2064 | { | |
2065 | if (strncmpic(p, hdr, len) == 0) | |
2066 | { | |
2067 | p += len; | |
2068 | while (*p == ' ' || *p == '\t') p++; | |
2069 | if (*p == ':') return TRUE; | |
2070 | } | |
2071 | while (*p != 0 && *p != '\n') p++; | |
2072 | if (*p == '\n') p++; | |
2073 | } | |
2074 | return FALSE; | |
2075 | } | |
2076 | ||
2077 | ||
2078 | ||
059ec3d9 PH |
2079 | |
2080 | /************************************************* | |
2081 | * Perform a local delivery * | |
2082 | *************************************************/ | |
2083 | ||
2084 | /* Each local delivery is performed in a separate process which sets its | |
2085 | uid and gid as specified. This is a safer way than simply changing and | |
2086 | restoring using seteuid(); there is a body of opinion that seteuid() cannot be | |
2087 | used safely. From release 4, Exim no longer makes any use of it. Besides, not | |
2088 | all systems have seteuid(). | |
2089 | ||
2090 | If the uid/gid are specified in the transport_instance, they are used; the | |
2091 | transport initialization must ensure that either both or neither are set. | |
2092 | Otherwise, the values associated with the address are used. If neither are set, | |
2093 | it is a configuration error. | |
2094 | ||
2095 | The transport or the address may specify a home directory (transport over- | |
2096 | rides), and if they do, this is set as $home. If neither have set a working | |
2097 | directory, this value is used for that as well. Otherwise $home is left unset | |
2098 | and the cwd is set to "/" - a directory that should be accessible to all users. | |
2099 | ||
2100 | Using a separate process makes it more complicated to get error information | |
2101 | back. We use a pipe to pass the return code and also an error code and error | |
2102 | text string back to the parent process. | |
2103 | ||
2104 | Arguments: | |
2105 | addr points to an address block for this delivery; for "normal" local | |
2106 | deliveries this is the only address to be delivered, but for | |
2107 | pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe) | |
2108 | a number of addresses can be handled simultaneously, and in this | |
2109 | case addr will point to a chain of addresses with the same | |
2110 | characteristics. | |
2111 | ||
2112 | shadowing TRUE if running a shadow transport; this causes output from pipes | |
2113 | to be ignored. | |
2114 | ||
2115 | Returns: nothing | |
2116 | */ | |
2117 | ||
2118 | static void | |
2119 | deliver_local(address_item *addr, BOOL shadowing) | |
2120 | { | |
2121 | BOOL use_initgroups; | |
2122 | uid_t uid; | |
2123 | gid_t gid; | |
2124 | int status, len, rc; | |
2125 | int pfd[2]; | |
2126 | pid_t pid; | |
2127 | uschar *working_directory; | |
2128 | address_item *addr2; | |
2129 | transport_instance *tp = addr->transport; | |
2130 | ||
2131 | /* Set up the return path from the errors or sender address. If the transport | |
2132 | has its own return path setting, expand it and replace the existing value. */ | |
2133 | ||
d6c82d7b | 2134 | if(addr->prop.errors_address) |
d43cbe25 | 2135 | return_path = addr->prop.errors_address; |
384152a6 | 2136 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 2137 | else if (addr->prop.srs_sender) |
d43cbe25 | 2138 | return_path = addr->prop.srs_sender; |
384152a6 TK |
2139 | #endif |
2140 | else | |
2141 | return_path = sender_address; | |
059ec3d9 | 2142 | |
d6c82d7b | 2143 | if (tp->return_path) |
059ec3d9 PH |
2144 | { |
2145 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b | 2146 | if (!new_return_path) |
059ec3d9 | 2147 | { |
8768d548 | 2148 | if (!f.expand_string_forcedfail) |
059ec3d9 PH |
2149 | { |
2150 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, | |
2151 | US"Failed to expand return path \"%s\" in %s transport: %s", | |
2152 | tp->return_path, tp->name, expand_string_message); | |
2153 | return; | |
2154 | } | |
2155 | } | |
2156 | else return_path = new_return_path; | |
2157 | } | |
2158 | ||
2159 | /* For local deliveries, one at a time, the value used for logging can just be | |
2160 | set directly, once and for all. */ | |
2161 | ||
2162 | used_return_path = return_path; | |
2163 | ||
2164 | /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message | |
2165 | gets put into the address(es), and the expansions are unset, so we can just | |
2166 | return. */ | |
2167 | ||
2168 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return; | |
2169 | ||
5418e93b PH |
2170 | /* See if either the transport or the address specifies a home directory. A |
2171 | home directory set in the address may already be expanded; a flag is set to | |
2172 | indicate that. In other cases we must expand it. */ | |
059ec3d9 | 2173 | |
d6c82d7b JH |
2174 | if ( (deliver_home = tp->home_dir) /* Set in transport, or */ |
2175 | || ( (deliver_home = addr->home_dir) /* Set in address and */ | |
2176 | && !testflag(addr, af_home_expanded) /* not expanded */ | |
2177 | ) ) | |
059ec3d9 PH |
2178 | { |
2179 | uschar *rawhome = deliver_home; | |
2180 | deliver_home = NULL; /* in case it contains $home */ | |
d6c82d7b | 2181 | if (!(deliver_home = expand_string(rawhome))) |
059ec3d9 PH |
2182 | { |
2183 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed " | |
2184 | "to expand for %s transport: %s", rawhome, tp->name, | |
2185 | expand_string_message); | |
2186 | return; | |
2187 | } | |
2188 | if (*deliver_home != '/') | |
2189 | { | |
2190 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" " | |
2191 | "is not absolute for %s transport", deliver_home, tp->name); | |
2192 | return; | |
2193 | } | |
2194 | } | |
2195 | ||
5418e93b PH |
2196 | /* See if either the transport or the address specifies a current directory, |
2197 | and if so, expand it. If nothing is set, use the home directory, unless it is | |
2198 | also unset in which case use "/", which is assumed to be a directory to which | |
2199 | all users have access. It is necessary to be in a visible directory for some | |
2200 | operating systems when running pipes, as some commands (e.g. "rm" under Solaris | |
2201 | 2.5) require this. */ | |
2202 | ||
d6c82d7b JH |
2203 | working_directory = tp->current_dir ? tp->current_dir : addr->current_dir; |
2204 | if (working_directory) | |
059ec3d9 PH |
2205 | { |
2206 | uschar *raw = working_directory; | |
d6c82d7b | 2207 | if (!(working_directory = expand_string(raw))) |
059ec3d9 PH |
2208 | { |
2209 | common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" " | |
2210 | "failed to expand for %s transport: %s", raw, tp->name, | |
2211 | expand_string_message); | |
2212 | return; | |
2213 | } | |
2214 | if (*working_directory != '/') | |
2215 | { | |
2216 | common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path " | |
2217 | "\"%s\" is not absolute for %s transport", working_directory, tp->name); | |
2218 | return; | |
2219 | } | |
2220 | } | |
d6c82d7b | 2221 | else working_directory = deliver_home ? deliver_home : US"/"; |
059ec3d9 PH |
2222 | |
2223 | /* If one of the return_output flags is set on the transport, create and open a | |
2224 | file in the message log directory for the transport to write its output onto. | |
2225 | This is mainly used by pipe transports. The file needs to be unique to the | |
2226 | address. This feature is not available for shadow transports. */ | |
2227 | ||
d6c82d7b JH |
2228 | if ( !shadowing |
2229 | && ( tp->return_output || tp->return_fail_output | |
ec0eb1a3 | 2230 | || tp->log_output || tp->log_fail_output || tp->log_defer_output |
d6c82d7b | 2231 | ) ) |
059ec3d9 | 2232 | { |
41313d92 JH |
2233 | uschar * error; |
2234 | ||
059ec3d9 | 2235 | addr->return_filename = |
41313d92 JH |
2236 | spool_fname(US"msglog", message_subdir, message_id, |
2237 | string_sprintf("-%d-%d", getpid(), return_count++)); | |
4c0a7a9c | 2238 | |
41313d92 | 2239 | if ((addr->return_file = open_msglog_file(addr->return_filename, 0400, &error)) < 0) |
059ec3d9 PH |
2240 | { |
2241 | common_error(TRUE, addr, errno, US"Unable to %s file for %s transport " | |
2242 | "to return message: %s", error, tp->name, strerror(errno)); | |
2243 | return; | |
2244 | } | |
2245 | } | |
2246 | ||
2247 | /* Create the pipe for inter-process communication. */ | |
2248 | ||
2249 | if (pipe(pfd) != 0) | |
2250 | { | |
2251 | common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s", | |
2252 | strerror(errno)); | |
2253 | return; | |
2254 | } | |
2255 | ||
2256 | /* Now fork the process to do the real work in the subprocess, but first | |
2257 | ensure that all cached resources are freed so that the subprocess starts with | |
2258 | a clean slate and doesn't interfere with the parent process. */ | |
2259 | ||
2260 | search_tidyup(); | |
2261 | ||
2262 | if ((pid = fork()) == 0) | |
2263 | { | |
2264 | BOOL replicate = TRUE; | |
2265 | ||
2266 | /* Prevent core dumps, as we don't want them in users' home directories. | |
2267 | HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that | |
2268 | system. Some experimental/developing systems (e.g. GNU/Hurd) may define | |
2269 | RLIMIT_CORE but not support it in setrlimit(). For such systems, do not | |
a29e5231 PP |
2270 | complain if the error is "not supported". |
2271 | ||
2272 | There are two scenarios where changing the max limit has an effect. In one, | |
2273 | the user is using a .forward and invoking a command of their choice via pipe; | |
2274 | for these, we do need the max limit to be 0 unless the admin chooses to | |
2275 | permit an increased limit. In the other, the command is invoked directly by | |
2276 | the transport and is under administrator control, thus being able to raise | |
2277 | the limit aids in debugging. So there's no general always-right answer. | |
2278 | ||
2279 | Thus we inhibit core-dumps completely but let individual transports, while | |
2280 | still root, re-raise the limits back up to aid debugging. We make the | |
2281 | default be no core-dumps -- few enough people can use core dumps in | |
2282 | diagnosis that it's reasonable to make them something that has to be explicitly requested. | |
2283 | */ | |
059ec3d9 | 2284 | |
a7538db1 | 2285 | #ifdef RLIMIT_CORE |
059ec3d9 PH |
2286 | struct rlimit rl; |
2287 | rl.rlim_cur = 0; | |
2288 | rl.rlim_max = 0; | |
2289 | if (setrlimit(RLIMIT_CORE, &rl) < 0) | |
2290 | { | |
a7538db1 | 2291 | # ifdef SETRLIMIT_NOT_SUPPORTED |
059ec3d9 | 2292 | if (errno != ENOSYS && errno != ENOTSUP) |
a7538db1 | 2293 | # endif |
059ec3d9 PH |
2294 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s", |
2295 | strerror(errno)); | |
2296 | } | |
a7538db1 | 2297 | #endif |
059ec3d9 PH |
2298 | |
2299 | /* Reset the random number generator, so different processes don't all | |
2300 | have the same sequence. */ | |
2301 | ||
2302 | random_seed = 0; | |
2303 | ||
2304 | /* If the transport has a setup entry, call this first, while still | |
2305 | privileged. (Appendfile uses this to expand quota, for example, while | |
2306 | able to read private files.) */ | |
2307 | ||
d6c82d7b | 2308 | if (addr->transport->setup) |
929ba01c | 2309 | switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid, |
059ec3d9 PH |
2310 | &(addr->message))) |
2311 | { | |
2312 | case DEFER: | |
d6c82d7b JH |
2313 | addr->transport_return = DEFER; |
2314 | goto PASS_BACK; | |
059ec3d9 PH |
2315 | |
2316 | case FAIL: | |
d6c82d7b JH |
2317 | addr->transport_return = PANIC; |
2318 | goto PASS_BACK; | |
059ec3d9 | 2319 | } |
059ec3d9 PH |
2320 | |
2321 | /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as | |
2322 | when the process becomes unprivileged, it won't be able to write to the | |
2323 | process log. SIGHUP is ignored throughout exim, except when it is being | |
2324 | run as a daemon. */ | |
2325 | ||
2326 | signal(SIGINT, SIG_IGN); | |
2327 | signal(SIGTERM, SIG_IGN); | |
2328 | signal(SIGUSR1, SIG_IGN); | |
2329 | ||
2330 | /* Close the unwanted half of the pipe, and set close-on-exec for the other | |
2331 | half - for transports that exec things (e.g. pipe). Then set the required | |
2332 | gid/uid. */ | |
2333 | ||
f1e894f3 | 2334 | (void)close(pfd[pipe_read]); |
ff790e47 | 2335 | (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) | |
059ec3d9 PH |
2336 | FD_CLOEXEC); |
2337 | exim_setugid(uid, gid, use_initgroups, | |
2338 | string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part, | |
2339 | addr->address, addr->transport->name)); | |
2340 | ||
2341 | DEBUG(D_deliver) | |
2342 | { | |
059ec3d9 | 2343 | debug_printf(" home=%s current=%s\n", deliver_home, working_directory); |
d7978c0f | 2344 | for (address_item * batched = addr->next; batched; batched = batched->next) |
059ec3d9 PH |
2345 | debug_printf("additional batched address: %s\n", batched->address); |
2346 | } | |
2347 | ||
2348 | /* Set an appropriate working directory. */ | |
2349 | ||
2350 | if (Uchdir(working_directory) < 0) | |
2351 | { | |
2352 | addr->transport_return = DEFER; | |
2353 | addr->basic_errno = errno; | |
2354 | addr->message = string_sprintf("failed to chdir to %s", working_directory); | |
2355 | } | |
2356 | ||
2357 | /* If successful, call the transport */ | |
2358 | ||
2359 | else | |
2360 | { | |
2361 | BOOL ok = TRUE; | |
2362 | set_process_info("delivering %s to %s using %s", message_id, | |
2363 | addr->local_part, addr->transport->name); | |
2364 | ||
2a47f028 JH |
2365 | /* Setting this global in the subprocess means we need never clear it */ |
2366 | transport_name = addr->transport->name; | |
2367 | ||
059ec3d9 PH |
2368 | /* If a transport filter has been specified, set up its argument list. |
2369 | Any errors will get put into the address, and FALSE yielded. */ | |
2370 | ||
d6c82d7b | 2371 | if (addr->transport->filter_command) |
059ec3d9 PH |
2372 | { |
2373 | ok = transport_set_up_command(&transport_filter_argv, | |
2374 | addr->transport->filter_command, | |
2375 | TRUE, PANIC, addr, US"transport filter", NULL); | |
2376 | transport_filter_timeout = addr->transport->filter_timeout; | |
2377 | } | |
2378 | else transport_filter_argv = NULL; | |
2379 | ||
2380 | if (ok) | |
2381 | { | |
2382 | debug_print_string(addr->transport->debug_string); | |
2383 | replicate = !(addr->transport->info->code)(addr->transport, addr); | |
2384 | } | |
2385 | } | |
2386 | ||
2387 | /* Pass the results back down the pipe. If necessary, first replicate the | |
2388 | status in the top address to the others in the batch. The label is the | |
2389 | subject of a goto when a call to the transport's setup function fails. We | |
2390 | pass the pointer to the transport back in case it got changed as a result of | |
2391 | file_format in appendfile. */ | |
2392 | ||
2393 | PASS_BACK: | |
2394 | ||
2395 | if (replicate) replicate_status(addr); | |
d6c82d7b | 2396 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 PH |
2397 | { |
2398 | int i; | |
2399 | int local_part_length = Ustrlen(addr2->local_part); | |
2400 | uschar *s; | |
1ac6b2e7 | 2401 | int ret; |
059ec3d9 | 2402 | |
d6c82d7b JH |
2403 | if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int) |
2404 | || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count) | |
2405 | || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags) | |
2406 | || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int) | |
2407 | || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int) | |
32dfdf8b | 2408 | || (ret = write(pfd[pipe_write], &addr2->delivery_usec, sizeof(int))) != sizeof(int) |
d6c82d7b JH |
2409 | || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int) |
2410 | || (ret = write(pfd[pipe_write], &addr2->transport, | |
1ac6b2e7 | 2411 | sizeof(transport_instance *))) != sizeof(transport_instance *) |
059ec3d9 PH |
2412 | |
2413 | /* For a file delivery, pass back the local part, in case the original | |
2414 | was only part of the final delivery path. This gives more complete | |
2415 | logging. */ | |
2416 | ||
1ac6b2e7 | 2417 | || (testflag(addr2, af_file) |
d6c82d7b | 2418 | && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int) |
1ac6b2e7 JH |
2419 | || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length |
2420 | ) | |
2421 | ) | |
2422 | ) | |
a23ff3b4 | 2423 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
1ac6b2e7 | 2424 | ret == -1 ? strerror(errno) : "short write"); |
059ec3d9 PH |
2425 | |
2426 | /* Now any messages */ | |
2427 | ||
2428 | for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message) | |
2429 | { | |
d6c82d7b JH |
2430 | int message_length = s ? Ustrlen(s) + 1 : 0; |
2431 | if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int) | |
2432 | || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length | |
1ac6b2e7 | 2433 | ) |
a23ff3b4 | 2434 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s", |
1ac6b2e7 | 2435 | ret == -1 ? strerror(errno) : "short write"); |
059ec3d9 PH |
2436 | } |
2437 | } | |
2438 | ||
2439 | /* OK, this process is now done. Free any cached resources that it opened, | |
2440 | and close the pipe we were writing down before exiting. */ | |
2441 | ||
f1e894f3 | 2442 | (void)close(pfd[pipe_write]); |
059ec3d9 PH |
2443 | search_tidyup(); |
2444 | exit(EXIT_SUCCESS); | |
2445 | } | |
2446 | ||
2447 | /* Back in the main process: panic if the fork did not succeed. This seems | |
2448 | better than returning an error - if forking is failing it is probably best | |
2449 | not to try other deliveries for this message. */ | |
2450 | ||
2451 | if (pid < 0) | |
2452 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s", | |
2453 | addr->address); | |
2454 | ||
2455 | /* Read the pipe to get the delivery status codes and error messages. Our copy | |
2456 | of the writing end must be closed first, as otherwise read() won't return zero | |
2457 | on an empty pipe. We check that a status exists for each address before | |
2458 | overwriting the address structure. If data is missing, the default DEFER status | |
2459 | will remain. Afterwards, close the reading end. */ | |
2460 | ||
f1e894f3 | 2461 | (void)close(pfd[pipe_write]); |
059ec3d9 | 2462 | |
d6c82d7b | 2463 | for (addr2 = addr; addr2; addr2 = addr2->next) |
059ec3d9 | 2464 | { |
d88f0784 | 2465 | if ((len = read(pfd[pipe_read], &status, sizeof(int))) > 0) |
059ec3d9 PH |
2466 | { |
2467 | int i; | |
2468 | uschar **sptr; | |
2469 | ||
2470 | addr2->transport_return = status; | |
d6c82d7b | 2471 | len = read(pfd[pipe_read], &transport_count, |
059ec3d9 | 2472 | sizeof(transport_count)); |
d6c82d7b JH |
2473 | len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags)); |
2474 | len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int)); | |
2475 | len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int)); | |
32dfdf8b | 2476 | len = read(pfd[pipe_read], &addr2->delivery_usec, sizeof(int)); |
d6c82d7b JH |
2477 | len = read(pfd[pipe_read], &addr2->special_action, sizeof(int)); |
2478 | len = read(pfd[pipe_read], &addr2->transport, | |
059ec3d9 PH |
2479 | sizeof(transport_instance *)); |
2480 | ||
2481 | if (testflag(addr2, af_file)) | |
2482 | { | |
d88f0784 JH |
2483 | int llen; |
2484 | if ( read(pfd[pipe_read], &llen, sizeof(int)) != sizeof(int) | |
2485 | || llen > 64*4 /* limit from rfc 5821, times I18N factor */ | |
2486 | ) | |
2487 | { | |
2488 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part length read" | |
2489 | " from delivery subprocess"); | |
2490 | break; | |
2491 | } | |
2492 | /* sanity-checked llen so disable the Coverity error */ | |
2493 | /* coverity[tainted_data] */ | |
2494 | if (read(pfd[pipe_read], big_buffer, llen) != llen) | |
2495 | { | |
2496 | log_write(0, LOG_MAIN|LOG_PANIC, "bad local_part read" | |
2497 | " from delivery subprocess"); | |
2498 | break; | |
2499 | } | |
2500 | big_buffer[llen] = 0; | |
059ec3d9 PH |
2501 | addr2->local_part = string_copy(big_buffer); |
2502 | } | |
2503 | ||
d6c82d7b | 2504 | for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message) |
059ec3d9 PH |
2505 | { |
2506 | int message_length; | |
d6c82d7b | 2507 | len = read(pfd[pipe_read], &message_length, sizeof(int)); |
059ec3d9 PH |
2508 | if (message_length > 0) |
2509 | { | |
d6c82d7b | 2510 | len = read(pfd[pipe_read], big_buffer, message_length); |
dc8091e7 | 2511 | big_buffer[big_buffer_size-1] = '\0'; /* guard byte */ |
059ec3d9 PH |
2512 | if (len > 0) *sptr = string_copy(big_buffer); |
2513 | } | |
2514 | } | |
2515 | } | |
2516 | ||
2517 | else | |
2518 | { | |
2519 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s " | |
2520 | "from delivery subprocess", addr2->unique); | |
2521 | break; | |
2522 | } | |
2523 | } | |
2524 | ||
f1e894f3 | 2525 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
2526 | |
2527 | /* Unless shadowing, write all successful addresses immediately to the journal | |
2528 | file, to ensure they are recorded asap. For homonymic addresses, use the base | |
2529 | address plus the transport name. Failure to write the journal is panic-worthy, | |
2530 | but don't stop, as it may prove possible subsequently to update the spool file | |
2531 | in order to record the delivery. */ | |
2532 | ||
2533 | if (!shadowing) | |
2534 | { | |
d6c82d7b JH |
2535 | for (addr2 = addr; addr2; addr2 = addr2->next) |
2536 | if (addr2->transport_return == OK) | |
2537 | { | |
2538 | if (testflag(addr2, af_homonym)) | |
2539 | sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name); | |
2540 | else | |
2541 | sprintf(CS big_buffer, "%.500s\n", addr2->unique); | |
059ec3d9 | 2542 | |
d6c82d7b JH |
2543 | /* In the test harness, wait just a bit to let the subprocess finish off |
2544 | any debug output etc first. */ | |
059ec3d9 | 2545 | |
9f01e50d | 2546 | testharness_pause_ms(300); |
059ec3d9 | 2547 | |
d6c82d7b JH |
2548 | DEBUG(D_deliver) debug_printf("journalling %s", big_buffer); |
2549 | len = Ustrlen(big_buffer); | |
2550 | if (write(journal_fd, big_buffer, len) != len) | |
2551 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s", | |
2552 | big_buffer, strerror(errno)); | |
2553 | } | |
059ec3d9 PH |
2554 | |
2555 | /* Ensure the journal file is pushed out to disk. */ | |
2556 | ||
54fc8428 | 2557 | if (EXIMfsync(journal_fd) < 0) |
059ec3d9 PH |
2558 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s", |
2559 | strerror(errno)); | |
2560 | } | |
2561 | ||
2562 | /* Wait for the process to finish. If it terminates with a non-zero code, | |
2563 | freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the | |
2564 | status values of all the addresses as they are. Take care to handle the case | |
2565 | when the subprocess doesn't seem to exist. This has been seen on one system | |
2566 | when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that | |
2567 | happens, wait() doesn't recognize the termination of child processes. Exim now | |
2568 | resets SIGCHLD to SIG_DFL, but this code should still be robust. */ | |
2569 | ||
2570 | while ((rc = wait(&status)) != pid) | |
059ec3d9 PH |
2571 | if (rc < 0 && errno == ECHILD) /* Process has vanished */ |
2572 | { | |
2573 | log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly", | |
2574 | addr->transport->driver_name); | |
2575 | status = 0; | |
2576 | break; | |
2577 | } | |
059ec3d9 PH |
2578 | |
2579 | if ((status & 0xffff) != 0) | |
2580 | { | |
2581 | int msb = (status >> 8) & 255; | |
2582 | int lsb = status & 255; | |
2583 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
2584 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
2585 | addr->special_action = SPECIAL_FREEZE; | |
2586 | log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero " | |
2587 | "status 0x%04x: %s %d", | |
2588 | addr->transport->driver_name, | |
2589 | status, | |
d6c82d7b | 2590 | msb == 0 ? "terminated by signal" : "exit code", |
059ec3d9 PH |
2591 | code); |
2592 | } | |
2593 | ||
2594 | /* If SPECIAL_WARN is set in the top address, send a warning message. */ | |
2595 | ||
d6c82d7b | 2596 | if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message) |
059ec3d9 PH |
2597 | { |
2598 | int fd; | |
2599 | uschar *warn_message; | |
d6c82d7b | 2600 | pid_t pid; |
059ec3d9 PH |
2601 | |
2602 | DEBUG(D_deliver) debug_printf("Warning message requested by transport\n"); | |
2603 | ||
d6c82d7b | 2604 | if (!(warn_message = expand_string(addr->transport->warn_message))) |
059ec3d9 PH |
2605 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning " |
2606 | "message for %s transport): %s", addr->transport->warn_message, | |
2607 | addr->transport->name, expand_string_message); | |
d6c82d7b JH |
2608 | |
2609 | else if ((pid = child_open_exim(&fd)) > 0) | |
059ec3d9 | 2610 | { |
d6c82d7b JH |
2611 | FILE *f = fdopen(fd, "wb"); |
2612 | if (errors_reply_to && !contains_header(US"Reply-To", warn_message)) | |
2613 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
2614 | fprintf(f, "Auto-Submitted: auto-replied\n"); | |
2615 | if (!contains_header(US"From", warn_message)) | |
2616 | moan_write_from(f); | |
2617 | fprintf(f, "%s", CS warn_message); | |
059ec3d9 | 2618 | |
d6c82d7b | 2619 | /* Close and wait for child process to complete, without a timeout. */ |
059ec3d9 | 2620 | |
d6c82d7b JH |
2621 | (void)fclose(f); |
2622 | (void)child_close(pid, 0); | |
059ec3d9 PH |
2623 | } |
2624 | ||
2625 | addr->special_action = SPECIAL_NONE; | |
2626 | } | |
2627 | } | |
2628 | ||
2629 | ||
2630 | ||
fa41615d | 2631 | |
3070ceee JH |
2632 | /* Check transport for the given concurrency limit. Return TRUE if over |
2633 | the limit (or an expansion failure), else FALSE and if there was a limit, | |
2634 | the key for the hints database used for the concurrency count. */ | |
fa41615d | 2635 | |
3070ceee JH |
2636 | static BOOL |
2637 | tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key) | |
fa41615d | 2638 | { |
3070ceee JH |
2639 | unsigned max_parallel; |
2640 | ||
2641 | if (!tp->max_parallel) return FALSE; | |
2642 | ||
2643 | max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE); | |
2644 | if (expand_string_message) | |
2645 | { | |
2646 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option " | |
2647 | "in %s transport (%s): %s", tp->name, addr->address, | |
2648 | expand_string_message); | |
2649 | return TRUE; | |
2650 | } | |
2651 | ||
2652 | if (max_parallel > 0) | |
2653 | { | |
2654 | uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name); | |
2655 | if (!enq_start(serialize_key, max_parallel)) | |
2656 | { | |
2657 | address_item * next; | |
2658 | DEBUG(D_transport) | |
2659 | debug_printf("skipping tpt %s because concurrency limit %u reached\n", | |
2660 | tp->name, max_parallel); | |
2661 | do | |
2662 | { | |
2663 | next = addr->next; | |
2664 | addr->message = US"concurrency limit reached for transport"; | |
2665 | addr->basic_errno = ERRNO_TRETRY; | |
ba936fb8 | 2666 | post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); |
3070ceee JH |
2667 | } while ((addr = next)); |
2668 | return TRUE; | |
2669 | } | |
2670 | *key = serialize_key; | |
2671 | } | |
2672 | return FALSE; | |
fa41615d JH |
2673 | } |
2674 | ||
2675 | ||
2676 | ||
059ec3d9 PH |
2677 | /************************************************* |
2678 | * Do local deliveries * | |
2679 | *************************************************/ | |
2680 | ||
2681 | /* This function processes the list of addresses in addr_local. True local | |
2682 | deliveries are always done one address at a time. However, local deliveries can | |
2683 | be batched up in some cases. Typically this is when writing batched SMTP output | |
2684 | files for use by some external transport mechanism, or when running local | |
2685 | deliveries over LMTP. | |
2686 | ||
2687 | Arguments: None | |
2688 | Returns: Nothing | |
2689 | */ | |
2690 | ||
2691 | static void | |
2692 | do_local_deliveries(void) | |
2693 | { | |
2694 | open_db dbblock; | |
2695 | open_db *dbm_file = NULL; | |
2696 | time_t now = time(NULL); | |
2697 | ||
2698 | /* Loop until we have exhausted the supply of local deliveries */ | |
2699 | ||
d6c82d7b | 2700 | while (addr_local) |
059ec3d9 | 2701 | { |
32dfdf8b JH |
2702 | struct timeval delivery_start; |
2703 | struct timeval deliver_time; | |
059ec3d9 PH |
2704 | address_item *addr2, *addr3, *nextaddr; |
2705 | int logflags = LOG_MAIN; | |
8768d548 | 2706 | int logchar = f.dont_deliver? '*' : '='; |
059ec3d9 | 2707 | transport_instance *tp; |
fa41615d | 2708 | uschar * serialize_key = NULL; |
059ec3d9 PH |
2709 | |
2710 | /* Pick the first undelivered address off the chain */ | |
2711 | ||
2712 | address_item *addr = addr_local; | |
2713 | addr_local = addr->next; | |
2714 | addr->next = NULL; | |
2715 | ||
2716 | DEBUG(D_deliver|D_transport) | |
2717 | debug_printf("--------> %s <--------\n", addr->address); | |
2718 | ||
2719 | /* An internal disaster if there is no transport. Should not occur! */ | |
2720 | ||
d6c82d7b | 2721 | if (!(tp = addr->transport)) |
059ec3d9 PH |
2722 | { |
2723 | logflags |= LOG_PANIC; | |
8768d548 | 2724 | f.disable_logging = FALSE; /* Jic */ |
d6c82d7b JH |
2725 | addr->message = addr->router |
2726 | ? string_sprintf("No transport set by %s router", addr->router->name) | |
f3ebb786 | 2727 | : US"No transport set by system filter"; |
ba936fb8 | 2728 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2729 | continue; |
2730 | } | |
2731 | ||
2732 | /* Check that this base address hasn't previously been delivered to this | |
2733 | transport. The check is necessary at this point to handle homonymic addresses | |
2734 | correctly in cases where the pattern of redirection changes between delivery | |
2735 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
2736 | time. */ | |
2737 | ||
c2c19e9d | 2738 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
2739 | |
2740 | /* There are weird cases where logging is disabled */ | |
2741 | ||
8768d548 | 2742 | f.disable_logging = tp->disable_logging; |
059ec3d9 | 2743 | |
f7fd3850 PH |
2744 | /* Check for batched addresses and possible amalgamation. Skip all the work |
2745 | if either batch_max <= 1 or there aren't any other addresses for local | |
2746 | delivery. */ | |
059ec3d9 | 2747 | |
d6c82d7b | 2748 | if (tp->batch_max > 1 && addr_local) |
059ec3d9 PH |
2749 | { |
2750 | int batch_count = 1; | |
2751 | BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain"); | |
d6c82d7b JH |
2752 | BOOL uses_lp = ( testflag(addr, af_pfr) |
2753 | && (testflag(addr, af_file) || addr->local_part[0] == '|') | |
2754 | ) | |
2755 | || readconf_depends((driver_instance *)tp, US"local_part"); | |
059ec3d9 PH |
2756 | uschar *batch_id = NULL; |
2757 | address_item **anchor = &addr_local; | |
2758 | address_item *last = addr; | |
2759 | address_item *next; | |
2760 | ||
2761 | /* Expand the batch_id string for comparison with other addresses. | |
2762 | Expansion failure suppresses batching. */ | |
2763 | ||
d6c82d7b | 2764 | if (tp->batch_id) |
059ec3d9 PH |
2765 | { |
2766 | deliver_set_expansions(addr); | |
2767 | batch_id = expand_string(tp->batch_id); | |
2768 | deliver_set_expansions(NULL); | |
d6c82d7b | 2769 | if (!batch_id) |
059ec3d9 PH |
2770 | { |
2771 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2772 | "in %s transport (%s): %s", tp->name, addr->address, | |
2773 | expand_string_message); | |
2774 | batch_count = tp->batch_max; | |
2775 | } | |
2776 | } | |
2777 | ||
2778 | /* Until we reach the batch_max limit, pick off addresses which have the | |
2779 | same characteristics. These are: | |
2780 | ||
2781 | same transport | |
7816e254 | 2782 | not previously delivered (see comment about 50 lines above) |
059ec3d9 | 2783 | same local part if the transport's configuration contains $local_part |
f7fd3850 | 2784 | or if this is a file or pipe delivery from a redirection |
059ec3d9 PH |
2785 | same domain if the transport's configuration contains $domain |
2786 | same errors address | |
2787 | same additional headers | |
2788 | same headers to be removed | |
2789 | same uid/gid for running the transport | |
2790 | same first host if a host list is set | |
2791 | */ | |
2792 | ||
d6c82d7b | 2793 | while ((next = *anchor) && batch_count < tp->batch_max) |
059ec3d9 PH |
2794 | { |
2795 | BOOL ok = | |
d6c82d7b JH |
2796 | tp == next->transport |
2797 | && !previously_transported(next, TRUE) | |
7eb0e5d2 JH |
2798 | && testflag(addr, af_pfr) == testflag(next, af_pfr) |
2799 | && testflag(addr, af_file) == testflag(next, af_file) | |
d6c82d7b JH |
2800 | && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0) |
2801 | && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0) | |
2802 | && same_strings(next->prop.errors_address, addr->prop.errors_address) | |
2803 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
2804 | && same_strings(next->prop.remove_headers, addr->prop.remove_headers) | |
2805 | && same_ugid(tp, addr, next) | |
2806 | && ( !addr->host_list && !next->host_list | |
2807 | || addr->host_list | |
2808 | && next->host_list | |
2809 | && Ustrcmp(addr->host_list->name, next->host_list->name) == 0 | |
2810 | ); | |
059ec3d9 PH |
2811 | |
2812 | /* If the transport has a batch_id setting, batch_id will be non-NULL | |
2813 | from the expansion outside the loop. Expand for this address and compare. | |
2814 | Expansion failure makes this address ineligible for batching. */ | |
2815 | ||
d6c82d7b | 2816 | if (ok && batch_id) |
059ec3d9 PH |
2817 | { |
2818 | uschar *bid; | |
2819 | address_item *save_nextnext = next->next; | |
2820 | next->next = NULL; /* Expansion for a single address */ | |
2821 | deliver_set_expansions(next); | |
2822 | next->next = save_nextnext; | |
2823 | bid = expand_string(tp->batch_id); | |
2824 | deliver_set_expansions(NULL); | |
d6c82d7b | 2825 | if (!bid) |
059ec3d9 PH |
2826 | { |
2827 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option " | |
2828 | "in %s transport (%s): %s", tp->name, next->address, | |
2829 | expand_string_message); | |
2830 | ok = FALSE; | |
2831 | } | |
2832 | else ok = (Ustrcmp(batch_id, bid) == 0); | |
2833 | } | |
2834 | ||
2835 | /* Take address into batch if OK. */ | |
2836 | ||
2837 | if (ok) | |
2838 | { | |
2839 | *anchor = next->next; /* Include the address */ | |
2840 | next->next = NULL; | |
2841 | last->next = next; | |
2842 | last = next; | |
2843 | batch_count++; | |
2844 | } | |
fa41615d | 2845 | else anchor = &next->next; /* Skip the address */ |
059ec3d9 PH |
2846 | } |
2847 | } | |
2848 | ||
2849 | /* We now have one or more addresses that can be delivered in a batch. Check | |
2850 | whether the transport is prepared to accept a message of this size. If not, | |
2851 | fail them all forthwith. If the expansion fails, or does not yield an | |
2852 | integer, defer delivery. */ | |
2853 | ||
d6c82d7b | 2854 | if (tp->message_size_limit) |
059ec3d9 PH |
2855 | { |
2856 | int rc = check_message_size(tp, addr); | |
2857 | if (rc != OK) | |
2858 | { | |
2859 | replicate_status(addr); | |
d6c82d7b | 2860 | while (addr) |
059ec3d9 PH |
2861 | { |
2862 | addr2 = addr->next; | |
ba936fb8 | 2863 | post_process_one(addr, rc, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2864 | addr = addr2; |
2865 | } | |
2866 | continue; /* With next batch of addresses */ | |
2867 | } | |
2868 | } | |
2869 | ||
2870 | /* If we are not running the queue, or if forcing, all deliveries will be | |
2871 | attempted. Otherwise, we must respect the retry times for each address. Even | |
2872 | when not doing this, we need to set up the retry key string, and determine | |
2873 | whether a retry record exists, because after a successful delivery, a delete | |
2874 | retry item must be set up. Keep the retry database open only for the duration | |
2875 | of these checks, rather than for all local deliveries, because some local | |
2876 | deliveries (e.g. to pipes) can take a substantial time. */ | |
2877 | ||
b10c87b3 | 2878 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE, TRUE))) |
059ec3d9 PH |
2879 | { |
2880 | DEBUG(D_deliver|D_retry|D_hints_lookup) | |
2881 | debug_printf("no retry data available\n"); | |
2882 | } | |
2883 | ||
2884 | addr2 = addr; | |
2885 | addr3 = NULL; | |
d6c82d7b | 2886 | while (addr2) |
059ec3d9 PH |
2887 | { |
2888 | BOOL ok = TRUE; /* to deliver this address */ | |
2889 | uschar *retry_key; | |
2890 | ||
2891 | /* Set up the retry key to include the domain or not, and change its | |
2892 | leading character from "R" to "T". Must make a copy before doing this, | |
2893 | because the old key may be pointed to from a "delete" retry item after | |
2894 | a routing delay. */ | |
2895 | ||
2896 | retry_key = string_copy( | |
d6c82d7b | 2897 | tp->retry_use_local_part ? addr2->address_retry_key : |
059ec3d9 PH |
2898 | addr2->domain_retry_key); |
2899 | *retry_key = 'T'; | |
2900 | ||
2901 | /* Inspect the retry data. If there is no hints file, delivery happens. */ | |
2902 | ||
d6c82d7b | 2903 | if (dbm_file) |
059ec3d9 PH |
2904 | { |
2905 | dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key); | |
2906 | ||
2907 | /* If there is no retry record, delivery happens. If there is, | |
2908 | remember it exists so it can be deleted after a successful delivery. */ | |
2909 | ||
d6c82d7b | 2910 | if (retry_record) |
059ec3d9 PH |
2911 | { |
2912 | setflag(addr2, af_lt_retry_exists); | |
2913 | ||
2914 | /* A retry record exists for this address. If queue running and not | |
2915 | forcing, inspect its contents. If the record is too old, or if its | |
2916 | retry time has come, or if it has passed its cutoff time, delivery | |
2917 | will go ahead. */ | |
2918 | ||
2919 | DEBUG(D_retry) | |
2920 | { | |
ea49d0e1 PH |
2921 | debug_printf("retry record exists: age=%s ", |
2922 | readconf_printtime(now - retry_record->time_stamp)); | |
2923 | debug_printf("(max %s)\n", readconf_printtime(retry_data_expire)); | |
2924 | debug_printf(" time to retry = %s expired = %d\n", | |
2925 | readconf_printtime(retry_record->next_try - now), | |
2926 | retry_record->expired); | |
059ec3d9 PH |
2927 | } |
2928 | ||
8768d548 | 2929 | if (f.queue_running && !f.deliver_force) |
059ec3d9 | 2930 | { |
d6c82d7b JH |
2931 | ok = (now - retry_record->time_stamp > retry_data_expire) |
2932 | || (now >= retry_record->next_try) | |
2933 | || retry_record->expired; | |
059ec3d9 PH |
2934 | |
2935 | /* If we haven't reached the retry time, there is one more check | |
1ddeb334 | 2936 | to do, which is for the ultimate address timeout. */ |
059ec3d9 PH |
2937 | |
2938 | if (!ok) | |
ba9af0af TF |
2939 | ok = retry_ultimate_address_timeout(retry_key, addr2->domain, |
2940 | retry_record, now); | |
059ec3d9 PH |
2941 | } |
2942 | } | |
2943 | else DEBUG(D_retry) debug_printf("no retry record exists\n"); | |
2944 | } | |
2945 | ||
2946 | /* This address is to be delivered. Leave it on the chain. */ | |
2947 | ||
2948 | if (ok) | |
2949 | { | |
2950 | addr3 = addr2; | |
2951 | addr2 = addr2->next; | |
2952 | } | |
2953 | ||
2954 | /* This address is to be deferred. Take it out of the chain, and | |
2955 | post-process it as complete. Must take it out of the chain first, | |
2956 | because post processing puts it on another chain. */ | |
2957 | ||
2958 | else | |
2959 | { | |
2960 | address_item *this = addr2; | |
2961 | this->message = US"Retry time not yet reached"; | |
2962 | this->basic_errno = ERRNO_LRETRY; | |
d6c82d7b JH |
2963 | addr2 = addr3 ? (addr3->next = addr2->next) |
2964 | : (addr = addr2->next); | |
ba936fb8 | 2965 | post_process_one(this, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 PH |
2966 | } |
2967 | } | |
2968 | ||
d6c82d7b | 2969 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
2970 | |
2971 | /* If there are no addresses left on the chain, they all deferred. Loop | |
2972 | for the next set of addresses. */ | |
2973 | ||
d6c82d7b | 2974 | if (!addr) continue; |
059ec3d9 | 2975 | |
fa41615d JH |
2976 | /* If the transport is limited for parallellism, enforce that here. |
2977 | We use a hints DB entry, incremented here and decremented after | |
2978 | the transport (and any shadow transport) completes. */ | |
2979 | ||
3070ceee | 2980 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
fa41615d | 2981 | { |
fa41615d JH |
2982 | if (expand_string_message) |
2983 | { | |
2984 | logflags |= LOG_PANIC; | |
3070ceee JH |
2985 | do |
2986 | { | |
2987 | addr = addr->next; | |
ba936fb8 | 2988 | post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0); |
3070ceee | 2989 | } while ((addr = addr2)); |
fa41615d | 2990 | } |
3070ceee | 2991 | continue; /* Loop for the next set of addresses. */ |
fa41615d JH |
2992 | } |
2993 | ||
2994 | ||
059ec3d9 PH |
2995 | /* So, finally, we do have some addresses that can be passed to the |
2996 | transport. Before doing so, set up variables that are relevant to a | |
2997 | single delivery. */ | |
2998 | ||
2999 | deliver_set_expansions(addr); | |
32dfdf8b JH |
3000 | |
3001 | gettimeofday(&delivery_start, NULL); | |
059ec3d9 | 3002 | deliver_local(addr, FALSE); |
32dfdf8b | 3003 | timesince(&deliver_time, &delivery_start); |
059ec3d9 PH |
3004 | |
3005 | /* If a shadow transport (which must perforce be another local transport), is | |
3006 | defined, and its condition is met, we must pass the message to the shadow | |
3007 | too, but only those addresses that succeeded. We do this by making a new | |
3008 | chain of addresses - also to keep the original chain uncontaminated. We must | |
3009 | use a chain rather than doing it one by one, because the shadow transport may | |
3010 | batch. | |
3011 | ||
3012 | NOTE: if the condition fails because of a lookup defer, there is nothing we | |
3013 | can do! */ | |
3014 | ||
d6c82d7b JH |
3015 | if ( tp->shadow |
3016 | && ( !tp->shadow_condition | |
3017 | || expand_check_condition(tp->shadow_condition, tp->name, US"transport") | |
3018 | ) ) | |
059ec3d9 PH |
3019 | { |
3020 | transport_instance *stp; | |
3021 | address_item *shadow_addr = NULL; | |
3022 | address_item **last = &shadow_addr; | |
3023 | ||
d6c82d7b | 3024 | for (stp = transports; stp; stp = stp->next) |
059ec3d9 PH |
3025 | if (Ustrcmp(stp->name, tp->shadow) == 0) break; |
3026 | ||
d6c82d7b | 3027 | if (!stp) |
059ec3d9 PH |
3028 | log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ", |
3029 | tp->shadow); | |
3030 | ||
3031 | /* Pick off the addresses that have succeeded, and make clones. Put into | |
3032 | the shadow_message field a pointer to the shadow_message field of the real | |
3033 | address. */ | |
3034 | ||
d6c82d7b JH |
3035 | else for (addr2 = addr; addr2; addr2 = addr2->next) |
3036 | if (addr2->transport_return == OK) | |
3037 | { | |
f3ebb786 | 3038 | addr3 = store_get(sizeof(address_item), FALSE); |
d6c82d7b JH |
3039 | *addr3 = *addr2; |
3040 | addr3->next = NULL; | |
82f90600 | 3041 | addr3->shadow_message = US &addr2->shadow_message; |
d6c82d7b JH |
3042 | addr3->transport = stp; |
3043 | addr3->transport_return = DEFER; | |
3044 | addr3->return_filename = NULL; | |
3045 | addr3->return_file = -1; | |
3046 | *last = addr3; | |
82f90600 | 3047 | last = &addr3->next; |
d6c82d7b | 3048 | } |
059ec3d9 PH |
3049 | |
3050 | /* If we found any addresses to shadow, run the delivery, and stick any | |
3051 | message back into the shadow_message field in the original. */ | |
3052 | ||
d6c82d7b | 3053 | if (shadow_addr) |
059ec3d9 PH |
3054 | { |
3055 | int save_count = transport_count; | |
3056 | ||
3057 | DEBUG(D_deliver|D_transport) | |
3058 | debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3059 | deliver_local(shadow_addr, TRUE); | |
3060 | ||
d6c82d7b | 3061 | for(; shadow_addr; shadow_addr = shadow_addr->next) |
059ec3d9 PH |
3062 | { |
3063 | int sresult = shadow_addr->transport_return; | |
d6c82d7b JH |
3064 | *(uschar **)shadow_addr->shadow_message = |
3065 | sresult == OK | |
3066 | ? string_sprintf(" ST=%s", stp->name) | |
3067 | : string_sprintf(" ST=%s (%s%s%s)", stp->name, | |
3068 | shadow_addr->basic_errno <= 0 | |
3069 | ? US"" | |
3070 | : US strerror(shadow_addr->basic_errno), | |
3071 | shadow_addr->basic_errno <= 0 || !shadow_addr->message | |
3072 | ? US"" | |
3073 | : US": ", | |
3074 | shadow_addr->message | |
3075 | ? shadow_addr->message | |
3076 | : shadow_addr->basic_errno <= 0 | |
3077 | ? US"unknown error" | |
3078 | : US""); | |
059ec3d9 PH |
3079 | |
3080 | DEBUG(D_deliver|D_transport) | |
3081 | debug_printf("%s shadow transport returned %s for %s\n", | |
aeb65e91 | 3082 | stp->name, rc_to_string(sresult), shadow_addr->address); |
059ec3d9 PH |
3083 | } |
3084 | ||
3085 | DEBUG(D_deliver|D_transport) | |
3086 | debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n"); | |
3087 | ||
3088 | transport_count = save_count; /* Restore original transport count */ | |
3089 | } | |
3090 | } | |
3091 | ||
3092 | /* Cancel the expansions that were set up for the delivery. */ | |
3093 | ||
3094 | deliver_set_expansions(NULL); | |
3095 | ||
fa41615d JH |
3096 | /* If the transport was parallelism-limited, decrement the hints DB record. */ |
3097 | ||
3098 | if (serialize_key) enq_end(serialize_key); | |
3099 | ||
059ec3d9 PH |
3100 | /* Now we can process the results of the real transport. We must take each |
3101 | address off the chain first, because post_process_one() puts it on another | |
3102 | chain. */ | |
3103 | ||
d6c82d7b | 3104 | for (addr2 = addr; addr2; addr2 = nextaddr) |
059ec3d9 PH |
3105 | { |
3106 | int result = addr2->transport_return; | |
3107 | nextaddr = addr2->next; | |
3108 | ||
3109 | DEBUG(D_deliver|D_transport) | |
3110 | debug_printf("%s transport returned %s for %s\n", | |
aeb65e91 | 3111 | tp->name, rc_to_string(result), addr2->address); |
059ec3d9 PH |
3112 | |
3113 | /* If there is a retry_record, or if delivery is deferred, build a retry | |
3114 | item for setting a new retry time or deleting the old retry record from | |
3115 | the database. These items are handled all together after all addresses | |
3116 | have been handled (so the database is open just for a short time for | |
3117 | updating). */ | |
3118 | ||
3119 | if (result == DEFER || testflag(addr2, af_lt_retry_exists)) | |
3120 | { | |
d6c82d7b JH |
3121 | int flags = result == DEFER ? 0 : rf_delete; |
3122 | uschar *retry_key = string_copy(tp->retry_use_local_part | |
3123 | ? addr2->address_retry_key : addr2->domain_retry_key); | |
059ec3d9 PH |
3124 | *retry_key = 'T'; |
3125 | retry_add_item(addr2, retry_key, flags); | |
3126 | } | |
3127 | ||
3128 | /* Done with this address */ | |
3129 | ||
32dfdf8b JH |
3130 | if (result == OK) |
3131 | { | |
3132 | addr2->more_errno = deliver_time.tv_sec; | |
3133 | addr2->delivery_usec = deliver_time.tv_usec; | |
3134 | } | |
ba936fb8 | 3135 | post_process_one(addr2, result, logflags, EXIM_DTYPE_TRANSPORT, logchar); |
059ec3d9 PH |
3136 | |
3137 | /* If a pipe delivery generated text to be sent back, the result may be | |
3138 | changed to FAIL, and we must copy this for subsequent addresses in the | |
3139 | batch. */ | |
3140 | ||
3141 | if (addr2->transport_return != result) | |
3142 | { | |
d6c82d7b | 3143 | for (addr3 = nextaddr; addr3; addr3 = addr3->next) |
059ec3d9 PH |
3144 | { |
3145 | addr3->transport_return = addr2->transport_return; | |
3146 | addr3->basic_errno = addr2->basic_errno; | |
3147 | addr3->message = addr2->message; | |
3148 | } | |
3149 | result = addr2->transport_return; | |
3150 | } | |
3151 | ||
3152 | /* Whether or not the result was changed to FAIL, we need to copy the | |
3153 | return_file value from the first address into all the addresses of the | |
3154 | batch, so they are all listed in the error message. */ | |
3155 | ||
3156 | addr2->return_file = addr->return_file; | |
3157 | ||
3158 | /* Change log character for recording successful deliveries. */ | |
3159 | ||
3160 | if (result == OK) logchar = '-'; | |
3161 | } | |
3162 | } /* Loop back for next batch of addresses */ | |
3163 | } | |
3164 | ||
3165 | ||
3166 | ||
3167 | ||
3168 | /************************************************* | |
3169 | * Sort remote deliveries * | |
3170 | *************************************************/ | |
3171 | ||
3172 | /* This function is called if remote_sort_domains is set. It arranges that the | |
3173 | chain of addresses for remote deliveries is ordered according to the strings | |
3174 | specified. Try to make this shuffling reasonably efficient by handling | |
3175 | sequences of addresses rather than just single ones. | |
3176 | ||
3177 | Arguments: None | |
3178 | Returns: Nothing | |
3179 | */ | |
3180 | ||
3181 | static void | |
3182 | sort_remote_deliveries(void) | |
3183 | { | |
3184 | int sep = 0; | |
3185 | address_item **aptr = &addr_remote; | |
55414b25 | 3186 | const uschar *listptr = remote_sort_domains; |
059ec3d9 PH |
3187 | uschar *pattern; |
3188 | uschar patbuf[256]; | |
3189 | ||
d6c82d7b JH |
3190 | while ( *aptr |
3191 | && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf))) | |
3192 | ) | |
059ec3d9 PH |
3193 | { |
3194 | address_item *moved = NULL; | |
3195 | address_item **bptr = &moved; | |
3196 | ||
d6c82d7b | 3197 | while (*aptr) |
059ec3d9 PH |
3198 | { |
3199 | address_item **next; | |
3200 | deliver_domain = (*aptr)->domain; /* set $domain */ | |
55414b25 | 3201 | if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
059ec3d9 PH |
3202 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK) |
3203 | { | |
d6c82d7b | 3204 | aptr = &(*aptr)->next; |
059ec3d9 PH |
3205 | continue; |
3206 | } | |
3207 | ||
d6c82d7b JH |
3208 | next = &(*aptr)->next; |
3209 | while ( *next | |
3210 | && (deliver_domain = (*next)->domain, /* Set $domain */ | |
55414b25 | 3211 | match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1, |
d6c82d7b JH |
3212 | &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK |
3213 | ) | |
3214 | next = &(*next)->next; | |
059ec3d9 PH |
3215 | |
3216 | /* If the batch of non-matchers is at the end, add on any that were | |
3217 | extracted further up the chain, and end this iteration. Otherwise, | |
3218 | extract them from the chain and hang on the moved chain. */ | |
3219 | ||
d6c82d7b | 3220 | if (!*next) |
059ec3d9 PH |
3221 | { |
3222 | *next = moved; | |
3223 | break; | |
3224 | } | |
3225 | ||
3226 | *bptr = *aptr; | |
3227 | *aptr = *next; | |
3228 | *next = NULL; | |
3229 | bptr = next; | |
d6c82d7b | 3230 | aptr = &(*aptr)->next; |
059ec3d9 PH |
3231 | } |
3232 | ||
3233 | /* If the loop ended because the final address matched, *aptr will | |
3234 | be NULL. Add on to the end any extracted non-matching addresses. If | |
3235 | *aptr is not NULL, the loop ended via "break" when *next is null, that | |
3236 | is, there was a string of non-matching addresses at the end. In this | |
3237 | case the extracted addresses have already been added on the end. */ | |
3238 | ||
d6c82d7b | 3239 | if (!*aptr) *aptr = moved; |
059ec3d9 PH |
3240 | } |
3241 | ||
3242 | DEBUG(D_deliver) | |
3243 | { | |
059ec3d9 | 3244 | debug_printf("remote addresses after sorting:\n"); |
d7978c0f | 3245 | for (address_item * addr = addr_remote; addr; addr = addr->next) |
059ec3d9 PH |
3246 | debug_printf(" %s\n", addr->address); |
3247 | } | |
3248 | } | |
3249 | ||
3250 | ||
3251 | ||
3252 | /************************************************* | |
3253 | * Read from pipe for remote delivery subprocess * | |
3254 | *************************************************/ | |
3255 | ||
3256 | /* This function is called when the subprocess is complete, but can also be | |
3257 | called before it is complete, in order to empty a pipe that is full (to prevent | |
3258 | deadlock). It must therefore keep track of its progress in the parlist data | |
3259 | block. | |
3260 | ||
3261 | We read the pipe to get the delivery status codes and a possible error message | |
3262 | for each address, optionally preceded by unusability data for the hosts and | |
3263 | also by optional retry data. | |
3264 | ||
3265 | Read in large chunks into the big buffer and then scan through, interpreting | |
3266 | the data therein. In most cases, only a single read will be necessary. No | |
1c5466b9 PH |
3267 | individual item will ever be anywhere near 2500 bytes in length, so by ensuring |
3268 | that we read the next chunk when there is less than 2500 bytes left in the | |
3269 | non-final chunk, we can assume each item is complete in the buffer before | |
3270 | handling it. Each item is written using a single write(), which is atomic for | |
3271 | small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and | |
3272 | often bigger) so even if we are reading while the subprocess is still going, we | |
3273 | should never have only a partial item in the buffer. | |
059ec3d9 | 3274 | |
0768462d JH |
3275 | hs12: This assumption is not true anymore, since we get quite large items (certificate |
3276 | information and such). | |
2cee425a | 3277 | |
059ec3d9 PH |
3278 | Argument: |
3279 | poffset the offset of the parlist item | |
3280 | eop TRUE if the process has completed | |
3281 | ||
3282 | Returns: TRUE if the terminating 'Z' item has been read, | |
3283 | or there has been a disaster (i.e. no more data needed); | |
3284 | FALSE otherwise | |
3285 | */ | |
3286 | ||
3287 | static BOOL | |
3288 | par_read_pipe(int poffset, BOOL eop) | |
3289 | { | |
3290 | host_item *h; | |
3291 | pardata *p = parlist + poffset; | |
3292 | address_item *addrlist = p->addrlist; | |
3293 | address_item *addr = p->addr; | |
3294 | pid_t pid = p->pid; | |
3295 | int fd = p->fd; | |
2cee425a | 3296 | |
059ec3d9 PH |
3297 | uschar *msg = p->msg; |
3298 | BOOL done = p->done; | |
059ec3d9 PH |
3299 | |
3300 | /* Loop through all items, reading from the pipe when necessary. The pipe | |
2cee425a HSHR |
3301 | used to be non-blocking. But I do not see a reason for using non-blocking I/O |
3302 | here, as the preceding select() tells us, if data is available for reading. | |
3303 | ||
3304 | A read() on a "selected" handle should never block, but(!) it may return | |
3305 | less data then we expected. (The buffer size we pass to read() shouldn't be | |
3306 | understood as a "request", but as a "limit".) | |
3307 | ||
3308 | Each separate item is written to the pipe in a timely manner. But, especially for | |
3309 | larger items, the read(2) may already return partial data from the write(2). | |
3310 | ||
3311 | The write is atomic mostly (depending on the amount written), but atomic does | |
3312 | not imply "all or noting", it just is "not intermixed" with other writes on the | |
3313 | same channel (pipe). | |
6c454556 HSHR |
3314 | |
3315 | */ | |
059ec3d9 PH |
3316 | |
3317 | DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n", | |
2cee425a | 3318 | (int)p->pid, eop? "ended" : "not ended yet"); |
059ec3d9 PH |
3319 | |
3320 | while (!done) | |
3321 | { | |
3322 | retry_item *r, **rp; | |
2cee425a HSHR |
3323 | uschar pipeheader[PIPE_HEADER_SIZE+1]; |
3324 | uschar *id = &pipeheader[0]; | |
3325 | uschar *subid = &pipeheader[1]; | |
3326 | uschar *ptr = big_buffer; | |
3327 | size_t required = PIPE_HEADER_SIZE; /* first the pipehaeder, later the data */ | |
3328 | ssize_t got; | |
3329 | ||
7845dbb3 | 3330 | DEBUG(D_deliver) debug_printf( |
0d68983b | 3331 | "expect %lu bytes (pipeheader) from tpt process %d\n", (u_long)required, pid); |
2cee425a HSHR |
3332 | |
3333 | /* We require(!) all the PIPE_HEADER_SIZE bytes here, as we know, | |
3334 | they're written in a timely manner, so waiting for the write shouldn't hurt a lot. | |
3335 | If we get less, we can assume the subprocess do be done and do not expect any further | |
3336 | information from it. */ | |
7845dbb3 | 3337 | |
ee250936 | 3338 | if ((got = readn(fd, pipeheader, required)) != required) |
059ec3d9 | 3339 | { |
bb07bcd3 JH |
3340 | msg = string_sprintf("got " SSIZE_T_FMT " of %d bytes (pipeheader) " |
3341 | "from transport process %d for transport %s", | |
3342 | got, PIPE_HEADER_SIZE, pid, addr->transport->driver_name); | |
3343 | done = TRUE; | |
3344 | break; | |
059ec3d9 PH |
3345 | } |
3346 | ||
2cee425a HSHR |
3347 | pipeheader[PIPE_HEADER_SIZE] = '\0'; |
3348 | DEBUG(D_deliver) | |
7845dbb3 JH |
3349 | debug_printf("got %ld bytes (pipeheader) from transport process %d\n", |
3350 | (long) got, pid); | |
059ec3d9 | 3351 | |
2cee425a HSHR |
3352 | { |
3353 | /* If we can't decode the pipeheader, the subprocess seems to have a | |
3354 | problem, we do not expect any furher information from it. */ | |
3355 | char *endc; | |
7845dbb3 | 3356 | required = Ustrtol(pipeheader+2, &endc, 10); |
bd21a787 WB |
3357 | if (*endc) |
3358 | { | |
2cee425a HSHR |
3359 | msg = string_sprintf("failed to read pipe " |
3360 | "from transport process %d for transport %s: error decoding size from header", | |
3361 | pid, addr->transport->driver_name); | |
bd21a787 WB |
3362 | done = TRUE; |
3363 | break; | |
3364 | } | |
2cee425a | 3365 | } |
bd21a787 WB |
3366 | |
3367 | DEBUG(D_deliver) | |
7845dbb3 | 3368 | debug_printf("expect %lu bytes (pipedata) from transport process %d\n", |
0d68983b | 3369 | (u_long)required, pid); |
2c0f3ea1 | 3370 | |
2cee425a HSHR |
3371 | /* Same as above, the transport process will write the bytes announced |
3372 | in a timely manner, so we can just wait for the bytes, getting less than expected | |
3373 | is considered a problem of the subprocess, we do not expect anything else from it. */ | |
ee250936 | 3374 | if ((got = readn(fd, big_buffer, required)) != required) |
8fa0a4d4 | 3375 | { |
bb07bcd3 JH |
3376 | msg = string_sprintf("got only " SSIZE_T_FMT " of " SIZE_T_FMT |
3377 | " bytes (pipedata) from transport process %d for transport %s", | |
3378 | got, required, pid, addr->transport->driver_name); | |
3379 | done = TRUE; | |
3380 | break; | |
8fa0a4d4 | 3381 | } |
bd21a787 | 3382 | |
059ec3d9 PH |
3383 | /* Handle each possible type of item, assuming the complete item is |
3384 | available in store. */ | |
3385 | ||
2cee425a | 3386 | switch (*id) |
059ec3d9 PH |
3387 | { |
3388 | /* Host items exist only if any hosts were marked unusable. Match | |
3389 | up by checking the IP address. */ | |
3390 | ||
3391 | case 'H': | |
57cc2785 JH |
3392 | for (h = addrlist->host_list; h; h = h->next) |
3393 | { | |
3394 | if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue; | |
3395 | h->status = ptr[0]; | |
3396 | h->why = ptr[1]; | |
3397 | } | |
3398 | ptr += 2; | |
3399 | while (*ptr++); | |
3400 | break; | |
059ec3d9 PH |
3401 | |
3402 | /* Retry items are sent in a preceding R item for each address. This is | |
3403 | kept separate to keep each message short enough to guarantee it won't | |
3404 | be split in the pipe. Hopefully, in the majority of cases, there won't in | |
3405 | fact be any retry items at all. | |
3406 | ||
3407 | The complete set of retry items might include an item to delete a | |
3408 | routing retry if there was a previous routing delay. However, routing | |
3409 | retries are also used when a remote transport identifies an address error. | |
3410 | In that case, there may also be an "add" item for the same key. Arrange | |
3411 | that a "delete" item is dropped in favour of an "add" item. */ | |
3412 | ||
3413 | case 'R': | |
57cc2785 | 3414 | if (!addr) goto ADDR_MISMATCH; |
059ec3d9 | 3415 | |
57cc2785 JH |
3416 | DEBUG(D_deliver|D_retry) |
3417 | debug_printf("reading retry information for %s from subprocess\n", | |
3418 | ptr+1); | |
059ec3d9 | 3419 | |
57cc2785 | 3420 | /* Cut out any "delete" items on the list. */ |
059ec3d9 | 3421 | |
57cc2785 JH |
3422 | for (rp = &addr->retries; (r = *rp); rp = &r->next) |
3423 | if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */ | |
3424 | { | |
3425 | if (!(r->flags & rf_delete)) break; /* It was not "delete" */ | |
3426 | *rp = r->next; /* Excise a delete item */ | |
3427 | DEBUG(D_deliver|D_retry) | |
3428 | debug_printf(" existing delete item dropped\n"); | |
3429 | } | |
059ec3d9 | 3430 | |
57cc2785 JH |
3431 | /* We want to add a delete item only if there is no non-delete item; |
3432 | however we still have to step ptr through the data. */ | |
059ec3d9 | 3433 | |
57cc2785 JH |
3434 | if (!r || !(*ptr & rf_delete)) |
3435 | { | |
f3ebb786 | 3436 | r = store_get(sizeof(retry_item), FALSE); |
57cc2785 JH |
3437 | r->next = addr->retries; |
3438 | addr->retries = r; | |
3439 | r->flags = *ptr++; | |
3440 | r->key = string_copy(ptr); | |
3441 | while (*ptr++); | |
32dfdf8b | 3442 | memcpy(&r->basic_errno, ptr, sizeof(r->basic_errno)); |
57cc2785 | 3443 | ptr += sizeof(r->basic_errno); |
32dfdf8b | 3444 | memcpy(&r->more_errno, ptr, sizeof(r->more_errno)); |
57cc2785 JH |
3445 | ptr += sizeof(r->more_errno); |
3446 | r->message = *ptr ? string_copy(ptr) : NULL; | |
3447 | DEBUG(D_deliver|D_retry) debug_printf(" added %s item\n", | |
3448 | r->flags & rf_delete ? "delete" : "retry"); | |
3449 | } | |
059ec3d9 | 3450 | |
57cc2785 JH |
3451 | else |
3452 | { | |
3453 | DEBUG(D_deliver|D_retry) | |
3454 | debug_printf(" delete item not added: non-delete item exists\n"); | |
3455 | ptr++; | |
3456 | while(*ptr++); | |
3457 | ptr += sizeof(r->basic_errno) + sizeof(r->more_errno); | |
3458 | } | |
059ec3d9 | 3459 | |
57cc2785 JH |
3460 | while(*ptr++); |
3461 | break; | |
059ec3d9 PH |
3462 | |
3463 | /* Put the amount of data written into the parlist block */ | |
3464 | ||
3465 | case 'S': | |
57cc2785 JH |
3466 | memcpy(&(p->transport_count), ptr, sizeof(transport_count)); |
3467 | ptr += sizeof(transport_count); | |
3468 | break; | |
059ec3d9 PH |
3469 | |
3470 | /* Address items are in the order of items on the address chain. We | |
3471 | remember the current address value in case this function is called | |
3472 | several times to empty the pipe in stages. Information about delivery | |
3473 | over TLS is sent in a preceding X item for each address. We don't put | |
3474 | it in with the other info, in order to keep each message short enough to | |
3475 | guarantee it won't be split in the pipe. */ | |
3476 | ||
01603eec | 3477 | #ifndef DISABLE_TLS |
059ec3d9 | 3478 | case 'X': |
57cc2785 | 3479 | if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */ |
2cee425a | 3480 | switch (*subid) |
57cc2785 JH |
3481 | { |
3482 | case '1': | |
3483 | addr->cipher = NULL; | |
3484 | addr->peerdn = NULL; | |
9d1c15ef | 3485 | |
57cc2785 JH |
3486 | if (*ptr) |
3487 | addr->cipher = string_copy(ptr); | |
3488 | while (*ptr++); | |
3489 | if (*ptr) | |
3490 | addr->peerdn = string_copy(ptr); | |
3491 | break; | |
3492 | ||
3493 | case '2': | |
3494 | if (*ptr) | |
3495 | (void) tls_import_cert(ptr, &addr->peercert); | |
3496 | else | |
3497 | addr->peercert = NULL; | |
3498 | break; | |
3499 | ||
3500 | case '3': | |
3501 | if (*ptr) | |
3502 | (void) tls_import_cert(ptr, &addr->ourcert); | |
3503 | else | |
3504 | addr->ourcert = NULL; | |
3505 | break; | |
018058b2 | 3506 | |
a7538db1 | 3507 | # ifndef DISABLE_OCSP |
57cc2785 JH |
3508 | case '4': |
3509 | addr->ocsp = *ptr ? *ptr - '0' : OCSP_NOT_REQ; | |
3510 | break; | |
a7538db1 | 3511 | # endif |
57cc2785 JH |
3512 | } |
3513 | while (*ptr++); | |
3514 | break; | |
01603eec | 3515 | #endif /*DISABLE_TLS*/ |
059ec3d9 | 3516 | |
6f123593 | 3517 | case 'C': /* client authenticator information */ |
2cee425a | 3518 | switch (*subid) |
57cc2785 JH |
3519 | { |
3520 | case '1': addr->authenticator = *ptr ? string_copy(ptr) : NULL; break; | |
3521 | case '2': addr->auth_id = *ptr ? string_copy(ptr) : NULL; break; | |
3522 | case '3': addr->auth_sndr = *ptr ? string_copy(ptr) : NULL; break; | |
3523 | } | |
3524 | while (*ptr++); | |
3525 | break; | |
6f123593 | 3526 | |
8ccd00b1 | 3527 | #ifndef DISABLE_PRDR |
fd98a5c6 | 3528 | case 'P': |
7eb0e5d2 | 3529 | setflag(addr, af_prdr_used); |
57cc2785 | 3530 | break; |
fd98a5c6 JH |
3531 | #endif |
3532 | ||
7c576fca JH |
3533 | case 'L': |
3534 | switch (*subid) | |
3535 | { | |
4e48d56c | 3536 | #ifdef SUPPORT_PIPE_CONNECT |
ee8b8090 JH |
3537 | case 2: setflag(addr, af_early_pipe); /*FALLTHROUGH*/ |
3538 | #endif | |
7c576fca JH |
3539 | case 1: setflag(addr, af_pipelining); break; |
3540 | } | |
3541 | break; | |
3542 | ||
e0cc6cda | 3543 | case 'K': |
7eb0e5d2 | 3544 | setflag(addr, af_chunking_used); |
57cc2785 | 3545 | break; |
e0cc6cda | 3546 | |
a2673768 | 3547 | case 'T': |
1ccd5f67 JH |
3548 | setflag(addr, af_tcp_fastopen_conn); |
3549 | if (*subid > '0') setflag(addr, af_tcp_fastopen); | |
ee8b8090 | 3550 | if (*subid > '1') setflag(addr, af_tcp_fastopen_data); |
a2673768 JH |
3551 | break; |
3552 | ||
6c1c3d1d | 3553 | case 'D': |
57cc2785 JH |
3554 | if (!addr) goto ADDR_MISMATCH; |
3555 | memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware)); | |
3556 | ptr += sizeof(addr->dsn_aware); | |
3557 | DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware); | |
059ec3d9 | 3558 | break; |
059ec3d9 | 3559 | |
57cc2785 JH |
3560 | case 'A': |
3561 | if (!addr) | |
3562 | { | |
3563 | ADDR_MISMATCH: | |
3564 | msg = string_sprintf("address count mismatch for data read from pipe " | |
3565 | "for transport process %d for transport %s", pid, | |
3566 | addrlist->transport->driver_name); | |
3567 | done = TRUE; | |
e6d2a989 | 3568 | break; |
57cc2785 | 3569 | } |
e6d2a989 | 3570 | |
2cee425a | 3571 | switch (*subid) |
57cc2785 JH |
3572 | { |
3573 | #ifdef SUPPORT_SOCKS | |
3574 | case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/ | |
3575 | proxy_session = TRUE; /*XXX should this be cleared somewhere? */ | |
3576 | if (*ptr == 0) | |
3577 | ptr++; | |
3578 | else | |
3579 | { | |
3580 | proxy_local_address = string_copy(ptr); | |
3581 | while(*ptr++); | |
3582 | memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port)); | |
3583 | ptr += sizeof(proxy_local_port); | |
3584 | } | |
3585 | break; | |
3586 | #endif | |
059ec3d9 | 3587 | |
57cc2785 JH |
3588 | #ifdef EXPERIMENTAL_DSN_INFO |
3589 | case '1': /* must arrive before A0, and applies to that addr */ | |
3590 | /* Two strings: smtp_greeting and helo_response */ | |
3591 | addr->smtp_greeting = string_copy(ptr); | |
3592 | while(*ptr++); | |
3593 | addr->helo_response = string_copy(ptr); | |
3594 | while(*ptr++); | |
3595 | break; | |
3596 | #endif | |
3597 | ||
3598 | case '0': | |
3599 | DEBUG(D_deliver) debug_printf("A0 %s tret %d\n", addr->address, *ptr); | |
3600 | addr->transport_return = *ptr++; | |
3601 | addr->special_action = *ptr++; | |
32dfdf8b | 3602 | memcpy(&addr->basic_errno, ptr, sizeof(addr->basic_errno)); |
57cc2785 | 3603 | ptr += sizeof(addr->basic_errno); |
32dfdf8b | 3604 | memcpy(&addr->more_errno, ptr, sizeof(addr->more_errno)); |
57cc2785 | 3605 | ptr += sizeof(addr->more_errno); |
32dfdf8b JH |
3606 | memcpy(&addr->delivery_usec, ptr, sizeof(addr->delivery_usec)); |
3607 | ptr += sizeof(addr->delivery_usec); | |
3608 | memcpy(&addr->flags, ptr, sizeof(addr->flags)); | |
57cc2785 JH |
3609 | ptr += sizeof(addr->flags); |
3610 | addr->message = *ptr ? string_copy(ptr) : NULL; | |
3611 | while(*ptr++); | |
3612 | addr->user_message = *ptr ? string_copy(ptr) : NULL; | |
3613 | while(*ptr++); | |
059ec3d9 | 3614 | |
57cc2785 | 3615 | /* Always two strings for host information, followed by the port number and DNSSEC mark */ |
895fbaf2 | 3616 | |
57cc2785 JH |
3617 | if (*ptr) |
3618 | { | |
f3ebb786 | 3619 | h = store_get(sizeof(host_item), FALSE); |
57cc2785 JH |
3620 | h->name = string_copy(ptr); |
3621 | while (*ptr++); | |
3622 | h->address = string_copy(ptr); | |
3623 | while(*ptr++); | |
3624 | memcpy(&h->port, ptr, sizeof(h->port)); | |
3625 | ptr += sizeof(h->port); | |
3626 | h->dnssec = *ptr == '2' ? DS_YES | |
3627 | : *ptr == '1' ? DS_NO | |
3628 | : DS_UNK; | |
3629 | ptr++; | |
3630 | addr->host_used = h; | |
3631 | } | |
3632 | else ptr++; | |
895fbaf2 | 3633 | |
57cc2785 | 3634 | /* Finished with this address */ |
895fbaf2 | 3635 | |
57cc2785 JH |
3636 | addr = addr->next; |
3637 | break; | |
3638 | } | |
3639 | break; | |
059ec3d9 | 3640 | |
aeaf5db3 JH |
3641 | /* Local interface address/port */ |
3642 | case 'I': | |
57cc2785 JH |
3643 | if (*ptr) sending_ip_address = string_copy(ptr); |
3644 | while (*ptr++) ; | |
3645 | if (*ptr) sending_port = atoi(CS ptr); | |
3646 | while (*ptr++) ; | |
3647 | break; | |
aeaf5db3 | 3648 | |
059ec3d9 PH |
3649 | /* Z marks the logical end of the data. It is followed by '0' if |
3650 | continue_transport was NULL at the end of transporting, otherwise '1'. | |
3651 | We need to know when it becomes NULL during a delivery down a passed SMTP | |
3652 | channel so that we don't try to pass anything more down it. Of course, for | |
3653 | most normal messages it will remain NULL all the time. */ | |
3654 | ||
3655 | case 'Z': | |
57cc2785 JH |
3656 | if (*ptr == '0') |
3657 | { | |
3658 | continue_transport = NULL; | |
3659 | continue_hostname = NULL; | |
3660 | } | |
3661 | done = TRUE; | |
3662 | DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr); | |
3663 | break; | |
059ec3d9 PH |
3664 | |
3665 | /* Anything else is a disaster. */ | |
3666 | ||
3667 | default: | |
57cc2785 JH |
3668 | msg = string_sprintf("malformed data (%d) read from pipe for transport " |
3669 | "process %d for transport %s", ptr[-1], pid, | |
3670 | addr->transport->driver_name); | |
3671 | done = TRUE; | |
3672 | break; | |
059ec3d9 PH |
3673 | } |
3674 | } | |
3675 | ||
3676 | /* The done flag is inspected externally, to determine whether or not to | |
3677 | call the function again when the process finishes. */ | |
3678 | ||
3679 | p->done = done; | |
3680 | ||
3681 | /* If the process hadn't finished, and we haven't seen the end of the data | |
2cee425a | 3682 | or if we suffered a disaster, update the rest of the state, and return FALSE to |
059ec3d9 PH |
3683 | indicate "not finished". */ |
3684 | ||
3685 | if (!eop && !done) | |
3686 | { | |
3687 | p->addr = addr; | |
3688 | p->msg = msg; | |
3689 | return FALSE; | |
3690 | } | |
3691 | ||
3692 | /* Close our end of the pipe, to prevent deadlock if the far end is still | |
3693 | pushing stuff into it. */ | |
3694 | ||
f1e894f3 | 3695 | (void)close(fd); |
059ec3d9 PH |
3696 | p->fd = -1; |
3697 | ||
3698 | /* If we have finished without error, but haven't had data for every address, | |
3699 | something is wrong. */ | |
3700 | ||
d6c82d7b | 3701 | if (!msg && addr) |
059ec3d9 PH |
3702 | msg = string_sprintf("insufficient address data read from pipe " |
3703 | "for transport process %d for transport %s", pid, | |
3704 | addr->transport->driver_name); | |
3705 | ||
3706 | /* If an error message is set, something has gone wrong in getting back | |
3707 | the delivery data. Put the message into each address and freeze it. */ | |
3708 | ||
d6c82d7b JH |
3709 | if (msg) |
3710 | for (addr = addrlist; addr; addr = addr->next) | |
059ec3d9 PH |
3711 | { |
3712 | addr->transport_return = DEFER; | |
3713 | addr->special_action = SPECIAL_FREEZE; | |
3714 | addr->message = msg; | |
2cee425a | 3715 | log_write(0, LOG_MAIN|LOG_PANIC, "Delivery status for %s: %s\n", addr->address, addr->message); |
059ec3d9 | 3716 | } |
059ec3d9 PH |
3717 | |
3718 | /* Return TRUE to indicate we have got all we need from this process, even | |
3719 | if it hasn't actually finished yet. */ | |
3720 | ||
3721 | return TRUE; | |
3722 | } | |
3723 | ||
3724 | ||
3725 | ||
3726 | /************************************************* | |
3727 | * Post-process a set of remote addresses * | |
3728 | *************************************************/ | |
3729 | ||
3730 | /* Do what has to be done immediately after a remote delivery for each set of | |
3731 | addresses, then re-write the spool if necessary. Note that post_process_one | |
3732 | puts the address on an appropriate queue; hence we must fish off the next | |
3733 | one first. This function is also called if there is a problem with setting | |
3734 | up a subprocess to do a remote delivery in parallel. In this case, the final | |
3735 | argument contains a message, and the action must be forced to DEFER. | |
3736 | ||
3737 | Argument: | |
3738 | addr pointer to chain of address items | |
3739 | logflags flags for logging | |
3740 | msg NULL for normal cases; -> error message for unexpected problems | |
3741 | fallback TRUE if processing fallback hosts | |
3742 | ||
3743 | Returns: nothing | |
3744 | */ | |
3745 | ||
3746 | static void | |
3747 | remote_post_process(address_item *addr, int logflags, uschar *msg, | |
3748 | BOOL fallback) | |
3749 | { | |
059ec3d9 PH |
3750 | /* If any host addresses were found to be unusable, add them to the unusable |
3751 | tree so that subsequent deliveries don't try them. */ | |
3752 | ||
d7978c0f | 3753 | for (host_item * h = addr->host_list; h; h = h->next) |
d6c82d7b JH |
3754 | if (h->address) |
3755 | if (h->status >= hstatus_unusable) tree_add_unusable(h); | |
059ec3d9 PH |
3756 | |
3757 | /* Now handle each address on the chain. The transport has placed '=' or '-' | |
3758 | into the special_action field for each successful delivery. */ | |
3759 | ||
d6c82d7b | 3760 | while (addr) |
059ec3d9 PH |
3761 | { |
3762 | address_item *next = addr->next; | |
3763 | ||
3764 | /* If msg == NULL (normal processing) and the result is DEFER and we are | |
3765 | processing the main hosts and there are fallback hosts available, put the | |
3766 | address on the list for fallback delivery. */ | |
3767 | ||
d6c82d7b JH |
3768 | if ( addr->transport_return == DEFER |
3769 | && addr->fallback_hosts | |
3770 | && !fallback | |
3771 | && !msg | |
3772 | ) | |
059ec3d9 PH |
3773 | { |
3774 | addr->host_list = addr->fallback_hosts; | |
3775 | addr->next = addr_fallback; | |
3776 | addr_fallback = addr; | |
3777 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address); | |
3778 | } | |
3779 | ||
3780 | /* If msg is set (=> unexpected problem), set it in the address before | |
3781 | doing the ordinary post processing. */ | |
3782 | ||
3783 | else | |
3784 | { | |
d6c82d7b | 3785 | if (msg) |
059ec3d9 PH |
3786 | { |
3787 | addr->message = msg; | |
3788 | addr->transport_return = DEFER; | |
3789 | } | |
3790 | (void)post_process_one(addr, addr->transport_return, logflags, | |
ba936fb8 | 3791 | EXIM_DTYPE_TRANSPORT, addr->special_action); |
059ec3d9 PH |
3792 | } |
3793 | ||
3794 | /* Next address */ | |
3795 | ||
3796 | addr = next; | |
3797 | } | |
3798 | ||
3799 | /* If we have just delivered down a passed SMTP channel, and that was | |
3800 | the last address, the channel will have been closed down. Now that | |
3801 | we have logged that delivery, set continue_sequence to 1 so that | |
3802 | any subsequent deliveries don't get "*" incorrectly logged. */ | |
3803 | ||
d6c82d7b | 3804 | if (!continue_transport) continue_sequence = 1; |
059ec3d9 PH |
3805 | } |
3806 | ||
3807 | ||
3808 | ||
3809 | /************************************************* | |
3810 | * Wait for one remote delivery subprocess * | |
3811 | *************************************************/ | |
3812 | ||
3813 | /* This function is called while doing remote deliveries when either the | |
3814 | maximum number of processes exist and we need one to complete so that another | |
3815 | can be created, or when waiting for the last ones to complete. It must wait for | |
3816 | the completion of one subprocess, empty the control block slot, and return a | |
3817 | pointer to the address chain. | |
3818 | ||
3819 | Arguments: none | |
3820 | Returns: pointer to the chain of addresses handled by the process; | |
3821 | NULL if no subprocess found - this is an unexpected error | |
3822 | */ | |
3823 | ||
3824 | static address_item * | |
3825 | par_wait(void) | |
3826 | { | |
3827 | int poffset, status; | |
3828 | address_item *addr, *addrlist; | |
3829 | pid_t pid; | |
3830 | ||
3831 | set_process_info("delivering %s: waiting for a remote delivery subprocess " | |
3832 | "to finish", message_id); | |
3833 | ||
3834 | /* Loop until either a subprocess completes, or there are no subprocesses in | |
3835 | existence - in which case give an error return. We cannot proceed just by | |
3836 | waiting for a completion, because a subprocess may have filled up its pipe, and | |
3837 | be waiting for it to be emptied. Therefore, if no processes have finished, we | |
3838 | wait for one of the pipes to acquire some data by calling select(), with a | |
3839 | timeout just in case. | |
3840 | ||
3841 | The simple approach is just to iterate after reading data from a ready pipe. | |
3842 | This leads to non-ideal behaviour when the subprocess has written its final Z | |
3843 | item, closed the pipe, and is in the process of exiting (the common case). A | |
3844 | call to waitpid() yields nothing completed, but select() shows the pipe ready - | |
3845 | reading it yields EOF, so you end up with busy-waiting until the subprocess has | |
3846 | actually finished. | |
3847 | ||
3848 | To avoid this, if all the data that is needed has been read from a subprocess | |
3849 | after select(), an explicit wait() for it is done. We know that all it is doing | |
3850 | is writing to the pipe and then exiting, so the wait should not be long. | |
3851 | ||
3852 | The non-blocking waitpid() is to some extent just insurance; if we could | |
3853 | reliably detect end-of-file on the pipe, we could always know when to do a | |
3854 | blocking wait() for a completed process. However, because some systems use | |
3855 | NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to | |
3856 | use code that functions without the need to recognize EOF. | |
3857 | ||
3858 | There's a double loop here just in case we end up with a process that is not in | |
3859 | the list of remote delivery processes. Something has obviously gone wrong if | |
3860 | this is the case. (For example, a process that is incorrectly left over from | |
3861 | routing or local deliveries might be found.) The damage can be minimized by | |
3862 | looping back and looking for another process. If there aren't any, the error | |
3863 | return will happen. */ | |
3864 | ||
3865 | for (;;) /* Normally we do not repeat this loop */ | |
3866 | { | |
3867 | while ((pid = waitpid(-1, &status, WNOHANG)) <= 0) | |
3868 | { | |
3869 | struct timeval tv; | |
3870 | fd_set select_pipes; | |
3871 | int maxpipe, readycount; | |
3872 | ||
3873 | /* A return value of -1 can mean several things. If errno != ECHILD, it | |
3874 | either means invalid options (which we discount), or that this process was | |
3875 | interrupted by a signal. Just loop to try the waitpid() again. | |
3876 | ||
3877 | If errno == ECHILD, waitpid() is telling us that there are no subprocesses | |
3878 | in existence. This should never happen, and is an unexpected error. | |
3879 | However, there is a nasty complication when running under Linux. If "strace | |
3880 | -f" is being used under Linux to trace this process and its children, | |
3881 | subprocesses are "stolen" from their parents and become the children of the | |
3882 | tracing process. A general wait such as the one we've just obeyed returns | |
3883 | as if there are no children while subprocesses are running. Once a | |
3884 | subprocess completes, it is restored to the parent, and waitpid(-1) finds | |
3885 | it. Thanks to Joachim Wieland for finding all this out and suggesting a | |
3886 | palliative. | |
3887 | ||
3888 | This does not happen using "truss" on Solaris, nor (I think) with other | |
3889 | tracing facilities on other OS. It seems to be specific to Linux. | |
3890 | ||
3891 | What we do to get round this is to use kill() to see if any of our | |
3892 | subprocesses are still in existence. If kill() gives an OK return, we know | |
3893 | it must be for one of our processes - it can't be for a re-use of the pid, | |
3894 | because if our process had finished, waitpid() would have found it. If any | |
3895 | of our subprocesses are in existence, we proceed to use select() as if | |
3896 | waitpid() had returned zero. I think this is safe. */ | |
3897 | ||
3898 | if (pid < 0) | |
3899 | { | |
3900 | if (errno != ECHILD) continue; /* Repeats the waitpid() */ | |
3901 | ||
3902 | DEBUG(D_deliver) | |
3903 | debug_printf("waitpid() returned -1/ECHILD: checking explicitly " | |
3904 | "for process existence\n"); | |
3905 | ||
3906 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3907 | { | |
3908 | if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0) | |
3909 | { | |
3910 | DEBUG(D_deliver) debug_printf("process %d still exists: assume " | |
3911 | "stolen by strace\n", (int)pid); | |
3912 | break; /* With poffset set */ | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | if (poffset >= remote_max_parallel) | |
3917 | { | |
3918 | DEBUG(D_deliver) debug_printf("*** no delivery children found\n"); | |
3919 | return NULL; /* This is the error return */ | |
3920 | } | |
3921 | } | |
3922 | ||
3923 | /* A pid value greater than 0 breaks the "while" loop. A negative value has | |
3924 | been handled above. A return value of zero means that there is at least one | |
3925 | subprocess, but there are no completed subprocesses. See if any pipes are | |
3926 | ready with any data for reading. */ | |
3927 | ||
3928 | DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n"); | |
3929 | ||
3930 | maxpipe = 0; | |
3931 | FD_ZERO(&select_pipes); | |
3932 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
059ec3d9 PH |
3933 | if (parlist[poffset].pid != 0) |
3934 | { | |
3935 | int fd = parlist[poffset].fd; | |
3936 | FD_SET(fd, &select_pipes); | |
3937 | if (fd > maxpipe) maxpipe = fd; | |
3938 | } | |
059ec3d9 PH |
3939 | |
3940 | /* Stick in a 60-second timeout, just in case. */ | |
3941 | ||
3942 | tv.tv_sec = 60; | |
3943 | tv.tv_usec = 0; | |
3944 | ||
3945 | readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes, | |
3946 | NULL, NULL, &tv); | |
3947 | ||
3948 | /* Scan through the pipes and read any that are ready; use the count | |
3949 | returned by select() to stop when there are no more. Select() can return | |
3950 | with no processes (e.g. if interrupted). This shouldn't matter. | |
3951 | ||
3952 | If par_read_pipe() returns TRUE, it means that either the terminating Z was | |
3953 | read, or there was a disaster. In either case, we are finished with this | |
3954 | process. Do an explicit wait() for the process and break the main loop if | |
3955 | it succeeds. | |
3956 | ||
3957 | It turns out that we have to deal with the case of an interrupted system | |
3958 | call, which can happen on some operating systems if the signal handling is | |
3959 | set up to do that by default. */ | |
3960 | ||
3961 | for (poffset = 0; | |
3962 | readycount > 0 && poffset < remote_max_parallel; | |
3963 | poffset++) | |
3964 | { | |
d6c82d7b JH |
3965 | if ( (pid = parlist[poffset].pid) != 0 |
3966 | && FD_ISSET(parlist[poffset].fd, &select_pipes) | |
3967 | ) | |
059ec3d9 PH |
3968 | { |
3969 | readycount--; | |
3970 | if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */ | |
059ec3d9 PH |
3971 | for (;;) /* Loop for signals */ |
3972 | { | |
3973 | pid_t endedpid = waitpid(pid, &status, 0); | |
3974 | if (endedpid == pid) goto PROCESS_DONE; | |
3975 | if (endedpid != (pid_t)(-1) || errno != EINTR) | |
3976 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return " | |
3977 | "%d (errno = %d) from waitpid() for process %d", | |
3978 | (int)endedpid, errno, (int)pid); | |
3979 | } | |
059ec3d9 PH |
3980 | } |
3981 | } | |
3982 | ||
3983 | /* Now go back and look for a completed subprocess again. */ | |
3984 | } | |
3985 | ||
3986 | /* A completed process was detected by the non-blocking waitpid(). Find the | |
3987 | data block that corresponds to this subprocess. */ | |
3988 | ||
3989 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
3990 | if (pid == parlist[poffset].pid) break; | |
3991 | ||
3992 | /* Found the data block; this is a known remote delivery process. We don't | |
3993 | need to repeat the outer loop. This should be what normally happens. */ | |
3994 | ||
3995 | if (poffset < remote_max_parallel) break; | |
3996 | ||
3997 | /* This situation is an error, but it's probably better to carry on looking | |
3998 | for another process than to give up (as we used to do). */ | |
3999 | ||
4000 | log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote " | |
4001 | "transport process list", pid); | |
4002 | } /* End of the "for" loop */ | |
4003 | ||
4004 | /* Come here when all the data was completely read after a select(), and | |
4005 | the process in pid has been wait()ed for. */ | |
4006 | ||
4007 | PROCESS_DONE: | |
4008 | ||
4009 | DEBUG(D_deliver) | |
4010 | { | |
4011 | if (status == 0) | |
4012 | debug_printf("remote delivery process %d ended\n", (int)pid); | |
4013 | else | |
4014 | debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid, | |
4015 | status); | |
4016 | } | |
4017 | ||
4018 | set_process_info("delivering %s", message_id); | |
4019 | ||
4020 | /* Get the chain of processed addresses */ | |
4021 | ||
4022 | addrlist = parlist[poffset].addrlist; | |
4023 | ||
4024 | /* If the process did not finish cleanly, record an error and freeze (except | |
4025 | for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed, | |
4026 | in case the delivery did actually happen. */ | |
4027 | ||
4028 | if ((status & 0xffff) != 0) | |
4029 | { | |
4030 | uschar *msg; | |
4031 | int msb = (status >> 8) & 255; | |
4032 | int lsb = status & 255; | |
4033 | int code = (msb == 0)? (lsb & 0x7f) : msb; | |
4034 | ||
4035 | msg = string_sprintf("%s transport process returned non-zero status 0x%04x: " | |
4036 | "%s %d", | |
4037 | addrlist->transport->driver_name, | |
4038 | status, | |
4039 | (msb == 0)? "terminated by signal" : "exit code", | |
4040 | code); | |
4041 | ||
4042 | if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT)) | |
4043 | addrlist->special_action = SPECIAL_FREEZE; | |
4044 | ||
d6c82d7b | 4045 | for (addr = addrlist; addr; addr = addr->next) |
059ec3d9 PH |
4046 | { |
4047 | addr->transport_return = DEFER; | |
4048 | addr->message = msg; | |
4049 | } | |
4050 | ||
4051 | remove_journal = FALSE; | |
4052 | } | |
4053 | ||
4054 | /* Else complete reading the pipe to get the result of the delivery, if all | |
4055 | the data has not yet been obtained. */ | |
4056 | ||
4057 | else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE); | |
4058 | ||
4059 | /* Put the data count and return path into globals, mark the data slot unused, | |
4060 | decrement the count of subprocesses, and return the address chain. */ | |
4061 | ||
4062 | transport_count = parlist[poffset].transport_count; | |
4063 | used_return_path = parlist[poffset].return_path; | |
4064 | parlist[poffset].pid = 0; | |
4065 | parcount--; | |
4066 | return addrlist; | |
4067 | } | |
4068 | ||
4069 | ||
4070 | ||
4071 | /************************************************* | |
4072 | * Wait for subprocesses and post-process * | |
4073 | *************************************************/ | |
4074 | ||
4075 | /* This function waits for subprocesses until the number that are still running | |
4076 | is below a given threshold. For each complete subprocess, the addresses are | |
4077 | post-processed. If we can't find a running process, there is some shambles. | |
4078 | Better not bomb out, as that might lead to multiple copies of the message. Just | |
4079 | log and proceed as if all done. | |
4080 | ||
4081 | Arguments: | |
4082 | max maximum number of subprocesses to leave running | |
4083 | fallback TRUE if processing fallback hosts | |
4084 | ||
4085 | Returns: nothing | |
4086 | */ | |
4087 | ||
4088 | static void | |
4089 | par_reduce(int max, BOOL fallback) | |
4090 | { | |
4091 | while (parcount > max) | |
4092 | { | |
4093 | address_item *doneaddr = par_wait(); | |
d6c82d7b | 4094 | if (!doneaddr) |
059ec3d9 PH |
4095 | { |
4096 | log_write(0, LOG_MAIN|LOG_PANIC, | |
4097 | "remote delivery process count got out of step"); | |
4098 | parcount = 0; | |
4099 | } | |
fa41615d JH |
4100 | else |
4101 | { | |
4102 | transport_instance * tp = doneaddr->transport; | |
4103 | if (tp->max_parallel) | |
4104 | enq_end(string_sprintf("tpt-serialize-%s", tp->name)); | |
4105 | ||
4106 | remote_post_process(doneaddr, LOG_MAIN, NULL, fallback); | |
4107 | } | |
059ec3d9 PH |
4108 | } |
4109 | } | |
4110 | ||
1ac6b2e7 | 4111 | static void |
2cee425a | 4112 | rmt_dlv_checked_write(int fd, char id, char subid, void * buf, ssize_t size) |
1ac6b2e7 | 4113 | { |
6c454556 HSHR |
4114 | uschar pipe_header[PIPE_HEADER_SIZE+1]; |
4115 | size_t total_len = PIPE_HEADER_SIZE + size; | |
4116 | ||
4117 | struct iovec iov[2] = { | |
4118 | { pipe_header, PIPE_HEADER_SIZE }, /* indication about the data to expect */ | |
4119 | { buf, size } /* *the* data */ | |
4120 | }; | |
4121 | ||
2cee425a | 4122 | ssize_t ret; |
bd21a787 WB |
4123 | |
4124 | /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */ | |
4125 | /* complain to log if someone tries with buffer sizes we can't handle*/ | |
4126 | ||
6c454556 | 4127 | if (size > BIG_BUFFER_SIZE-1) |
d6c82d7b | 4128 | { |
94431adb | 4129 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
6c454556 HSHR |
4130 | "Failed writing transport result to pipe: can't handle buffers > %d bytes. truncating!\n", |
4131 | BIG_BUFFER_SIZE-1); | |
4132 | size = BIG_BUFFER_SIZE; | |
d6c82d7b | 4133 | } |
bd21a787 | 4134 | |
7845dbb3 | 4135 | /* Should we check that we do not write more than PIPE_BUF? What would |
6c454556 | 4136 | that help? */ |
bd21a787 WB |
4137 | |
4138 | /* convert size to human readable string prepended by id and subid */ | |
7845dbb3 JH |
4139 | if (PIPE_HEADER_SIZE != snprintf(CS pipe_header, PIPE_HEADER_SIZE+1, "%c%c%05ld", |
4140 | id, subid, (long)size)) | |
bd21a787 | 4141 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n"); |
bd21a787 | 4142 | |
7845dbb3 JH |
4143 | DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%ld,final:%s\n", |
4144 | id, subid, (long)size, pipe_header); | |
bd21a787 | 4145 | |
6c454556 | 4146 | if ((ret = writev(fd, iov, 2)) != total_len) |
7845dbb3 JH |
4147 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
4148 | "Failed writing transport result to pipe (%ld of %ld bytes): %s", | |
4149 | (long)ret, (long)total_len, ret == -1 ? strerror(errno) : "short write"); | |
1ac6b2e7 JH |
4150 | } |
4151 | ||
059ec3d9 PH |
4152 | /************************************************* |
4153 | * Do remote deliveries * | |
4154 | *************************************************/ | |
4155 | ||
4156 | /* This function is called to process the addresses in addr_remote. We must | |
4157 | pick off the queue all addresses that have the same transport, remote | |
4158 | destination, and errors address, and hand them to the transport in one go, | |
4159 | subject to some configured limitations. If this is a run to continue delivering | |
4160 | to an existing delivery channel, skip all but those addresses that can go to | |
4161 | that channel. The skipped addresses just get deferred. | |
4162 | ||
4163 | If mua_wrapper is set, all addresses must be able to be sent in a single | |
4164 | transaction. If not, this function yields FALSE. | |
4165 | ||
4166 | In Exim 4, remote deliveries are always done in separate processes, even | |
4167 | if remote_max_parallel = 1 or if there's only one delivery to do. The reason | |
4168 | is so that the base process can retain privilege. This makes the | |
4169 | implementation of fallback transports feasible (though not initially done.) | |
4170 | ||
4171 | We create up to the configured number of subprocesses, each of which passes | |
4172 | back the delivery state via a pipe. (However, when sending down an existing | |
4173 | connection, remote_max_parallel is forced to 1.) | |
4174 | ||
4175 | Arguments: | |
4176 | fallback TRUE if processing fallback hosts | |
4177 | ||
4178 | Returns: TRUE normally | |
4179 | FALSE if mua_wrapper is set and the addresses cannot all be sent | |
4180 | in one transaction | |
4181 | */ | |
4182 | ||
4183 | static BOOL | |
4184 | do_remote_deliveries(BOOL fallback) | |
4185 | { | |
4186 | int parmax; | |
059ec3d9 PH |
4187 | int poffset; |
4188 | ||
4189 | parcount = 0; /* Number of executing subprocesses */ | |
4190 | ||
4191 | /* When sending down an existing channel, only do one delivery at a time. | |
4192 | We use a local variable (parmax) to hold the maximum number of processes; | |
4193 | this gets reduced from remote_max_parallel if we can't create enough pipes. */ | |
4194 | ||
d6c82d7b | 4195 | if (continue_transport) remote_max_parallel = 1; |
059ec3d9 PH |
4196 | parmax = remote_max_parallel; |
4197 | ||
4198 | /* If the data for keeping a list of processes hasn't yet been | |
4199 | set up, do so. */ | |
4200 | ||
d6c82d7b | 4201 | if (!parlist) |
059ec3d9 | 4202 | { |
f3ebb786 | 4203 | parlist = store_get(remote_max_parallel * sizeof(pardata), FALSE); |
059ec3d9 PH |
4204 | for (poffset = 0; poffset < remote_max_parallel; poffset++) |
4205 | parlist[poffset].pid = 0; | |
4206 | } | |
4207 | ||
4208 | /* Now loop for each remote delivery */ | |
4209 | ||
d7978c0f | 4210 | for (int delivery_count = 0; addr_remote; delivery_count++) |
059ec3d9 PH |
4211 | { |
4212 | pid_t pid; | |
4213 | uid_t uid; | |
4214 | gid_t gid; | |
4215 | int pfd[2]; | |
4216 | int address_count = 1; | |
4217 | int address_count_max; | |
4218 | BOOL multi_domain; | |
4219 | BOOL use_initgroups; | |
4220 | BOOL pipe_done = FALSE; | |
4221 | transport_instance *tp; | |
4222 | address_item **anchor = &addr_remote; | |
4223 | address_item *addr = addr_remote; | |
4224 | address_item *last = addr; | |
4225 | address_item *next; | |
d6c82d7b | 4226 | uschar * panicmsg; |
fa41615d | 4227 | uschar * serialize_key = NULL; |
059ec3d9 PH |
4228 | |
4229 | /* Pull the first address right off the list. */ | |
4230 | ||
4231 | addr_remote = addr->next; | |
4232 | addr->next = NULL; | |
4233 | ||
4234 | DEBUG(D_deliver|D_transport) | |
4235 | debug_printf("--------> %s <--------\n", addr->address); | |
4236 | ||
4237 | /* If no transport has been set, there has been a big screw-up somewhere. */ | |
4238 | ||
d6c82d7b | 4239 | if (!(tp = addr->transport)) |
059ec3d9 | 4240 | { |
8768d548 | 4241 | f.disable_logging = FALSE; /* Jic */ |
d6c82d7b JH |
4242 | panicmsg = US"No transport set by router"; |
4243 | goto panic_continue; | |
059ec3d9 PH |
4244 | } |
4245 | ||
4246 | /* Check that this base address hasn't previously been delivered to this | |
4247 | transport. The check is necessary at this point to handle homonymic addresses | |
4248 | correctly in cases where the pattern of redirection changes between delivery | |
4249 | attempts. Non-homonymic previous delivery is detected earlier, at routing | |
4250 | time. */ | |
4251 | ||
c2c19e9d | 4252 | if (previously_transported(addr, FALSE)) continue; |
059ec3d9 PH |
4253 | |
4254 | /* Force failure if the message is too big. */ | |
4255 | ||
d6c82d7b | 4256 | if (tp->message_size_limit) |
059ec3d9 PH |
4257 | { |
4258 | int rc = check_message_size(tp, addr); | |
4259 | if (rc != OK) | |
4260 | { | |
4261 | addr->transport_return = rc; | |
4262 | remote_post_process(addr, LOG_MAIN, NULL, fallback); | |
4263 | continue; | |
4264 | } | |
4265 | } | |
4266 | ||
4267 | /* Get the flag which specifies whether the transport can handle different | |
506900af JH |
4268 | domains that nevertheless resolve to the same set of hosts. If it needs |
4269 | expanding, get variables set: $address_data, $domain_data, $localpart_data, | |
4270 | $host, $host_address, $host_port. */ | |
4271 | if (tp->expand_multi_domain) | |
4272 | deliver_set_expansions(addr); | |
4273 | ||
4274 | if (exp_bool(addr, US"transport", tp->name, D_transport, | |
4275 | US"multi_domain", tp->multi_domain, tp->expand_multi_domain, | |
4276 | &multi_domain) != OK) | |
4277 | { | |
4278 | deliver_set_expansions(NULL); | |
d6c82d7b JH |
4279 | panicmsg = addr->message; |
4280 | goto panic_continue; | |
506900af | 4281 | } |
059ec3d9 PH |
4282 | |
4283 | /* Get the maximum it can handle in one envelope, with zero meaning | |
4284 | unlimited, which is forced for the MUA wrapper case. */ | |
4285 | ||
4286 | address_count_max = tp->max_addresses; | |
4287 | if (address_count_max == 0 || mua_wrapper) address_count_max = 999999; | |
4288 | ||
4289 | ||
4290 | /************************************************************************/ | |
4291 | /***** This is slightly experimental code, but should be safe. *****/ | |
4292 | ||
4293 | /* The address_count_max value is the maximum number of addresses that the | |
4294 | transport can send in one envelope. However, the transport must be capable of | |
4295 | dealing with any number of addresses. If the number it gets exceeds its | |
4296 | envelope limitation, it must send multiple copies of the message. This can be | |
4297 | done over a single connection for SMTP, so uses less resources than making | |
4298 | multiple connections. On the other hand, if remote_max_parallel is greater | |
4299 | than one, it is perhaps a good idea to use parallel processing to move the | |
4300 | message faster, even if that results in multiple simultaneous connections to | |
4301 | the same host. | |
4302 | ||
4303 | How can we come to some compromise between these two ideals? What we do is to | |
4304 | limit the number of addresses passed to a single instance of a transport to | |
4305 | the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total | |
4306 | number of addresses routed to remote transports divided by | |
4307 | remote_max_parallel. For example, if the message has 100 remote recipients, | |
4308 | remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at | |
4309 | once. But if rcpt_max is 100, we could send up to 100. | |
4310 | ||
4311 | Of course, not all the remotely addresses in a message are going to go to the | |
4312 | same set of hosts (except in smarthost configurations), so this is just a | |
4313 | heuristic way of dividing up the work. | |
4314 | ||
4315 | Furthermore (1), because this may not be wanted in some cases, and also to | |
4316 | cope with really pathological cases, there is also a limit to the number of | |
4317 | messages that are sent over one connection. This is the same limit that is | |
4318 | used when sending several different messages over the same connection. | |
4319 | Continue_sequence is set when in this situation, to the number sent so | |
4320 | far, including this message. | |
4321 | ||
4322 | Furthermore (2), when somebody explicitly sets the maximum value to 1, it | |
4323 | is probably because they are using VERP, in which case they want to pass only | |
4324 | one address at a time to the transport, in order to be able to use | |
4325 | $local_part and $domain in constructing a new return path. We could test for | |
4326 | the use of these variables, but as it is so likely they will be used when the | |
4327 | maximum is 1, we don't bother. Just leave the value alone. */ | |
4328 | ||
d6c82d7b JH |
4329 | if ( address_count_max != 1 |
4330 | && address_count_max < remote_delivery_count/remote_max_parallel | |
4331 | ) | |
059ec3d9 PH |
4332 | { |
4333 | int new_max = remote_delivery_count/remote_max_parallel; | |
4334 | int message_max = tp->connection_max_messages; | |
4335 | if (connection_max_messages >= 0) message_max = connection_max_messages; | |
4336 | message_max -= continue_sequence - 1; | |
4337 | if (message_max > 0 && new_max > address_count_max * message_max) | |
4338 | new_max = address_count_max * message_max; | |
4339 | address_count_max = new_max; | |
4340 | } | |
4341 | ||
4342 | /************************************************************************/ | |
4343 | ||
4344 | ||
4345 | /* Pick off all addresses which have the same transport, errors address, | |
4346 | destination, and extra headers. In some cases they point to the same host | |
4347 | list, but we also need to check for identical host lists generated from | |
4348 | entirely different domains. The host list pointers can be NULL in the case | |
4349 | where the hosts are defined in the transport. There is also a configured | |
4350 | maximum limit of addresses that can be handled at once (see comments above | |
506900af JH |
4351 | for how it is computed). |
4352 | If the transport does not handle multiple domains, enforce that also, | |
4353 | and if it might need a per-address check for this, re-evaluate it. | |
4354 | */ | |
059ec3d9 | 4355 | |
d6c82d7b | 4356 | while ((next = *anchor) && address_count < address_count_max) |
059ec3d9 | 4357 | { |
506900af JH |
4358 | BOOL md; |
4359 | if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0) | |
4360 | && tp == next->transport | |
4361 | && same_hosts(next->host_list, addr->host_list) | |
d43cbe25 JH |
4362 | && same_strings(next->prop.errors_address, addr->prop.errors_address) |
4363 | && same_headers(next->prop.extra_headers, addr->prop.extra_headers) | |
506900af | 4364 | && same_ugid(tp, next, addr) |
d43cbe25 JH |
4365 | && ( next->prop.remove_headers == addr->prop.remove_headers |
4366 | || ( next->prop.remove_headers | |
4367 | && addr->prop.remove_headers | |
4368 | && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0 | |
506900af JH |
4369 | ) ) |
4370 | && ( !multi_domain | |
4371 | || ( ( | |
863bd541 | 4372 | (void)(!tp->expand_multi_domain || ((void)deliver_set_expansions(next), 1)), |
506900af JH |
4373 | exp_bool(addr, |
4374 | US"transport", next->transport->name, D_transport, | |
4375 | US"multi_domain", next->transport->multi_domain, | |
4376 | next->transport->expand_multi_domain, &md) == OK | |
4377 | ) | |
4378 | && md | |
4379 | ) ) ) | |
059ec3d9 PH |
4380 | { |
4381 | *anchor = next->next; | |
4382 | next->next = NULL; | |
4383 | next->first = addr; /* remember top one (for retry processing) */ | |
4384 | last->next = next; | |
4385 | last = next; | |
4386 | address_count++; | |
4387 | } | |
4388 | else anchor = &(next->next); | |
506900af | 4389 | deliver_set_expansions(NULL); |
059ec3d9 PH |
4390 | } |
4391 | ||
4392 | /* If we are acting as an MUA wrapper, all addresses must go in a single | |
4393 | transaction. If not, put them back on the chain and yield FALSE. */ | |
4394 | ||
d6c82d7b | 4395 | if (mua_wrapper && addr_remote) |
059ec3d9 PH |
4396 | { |
4397 | last->next = addr_remote; | |
4398 | addr_remote = addr; | |
4399 | return FALSE; | |
4400 | } | |
4401 | ||
fa41615d JH |
4402 | /* If the transport is limited for parallellism, enforce that here. |
4403 | The hints DB entry is decremented in par_reduce(), when we reap the | |
4404 | transport process. */ | |
4405 | ||
3070ceee JH |
4406 | if (tpt_parallel_check(tp, addr, &serialize_key)) |
4407 | if ((panicmsg = expand_string_message)) | |
fa41615d | 4408 | goto panic_continue; |
3070ceee JH |
4409 | else |
4410 | continue; /* Loop for the next set of addresses. */ | |
fa41615d | 4411 | |
059ec3d9 PH |
4412 | /* Set up the expansion variables for this set of addresses */ |
4413 | ||
4414 | deliver_set_expansions(addr); | |
4415 | ||
018c60d7 JH |
4416 | /* Ensure any transport-set auth info is fresh */ |
4417 | addr->authenticator = addr->auth_id = addr->auth_sndr = NULL; | |
4418 | ||
059ec3d9 PH |
4419 | /* Compute the return path, expanding a new one if required. The old one |
4420 | must be set first, as it might be referred to in the expansion. */ | |
4421 | ||
d6c82d7b | 4422 | if(addr->prop.errors_address) |
d43cbe25 | 4423 | return_path = addr->prop.errors_address; |
384152a6 | 4424 | #ifdef EXPERIMENTAL_SRS |
d6c82d7b | 4425 | else if(addr->prop.srs_sender) |
d43cbe25 | 4426 | return_path = addr->prop.srs_sender; |
384152a6 TK |
4427 | #endif |
4428 | else | |
4429 | return_path = sender_address; | |
059ec3d9 | 4430 | |
d6c82d7b | 4431 | if (tp->return_path) |
059ec3d9 PH |
4432 | { |
4433 | uschar *new_return_path = expand_string(tp->return_path); | |
d6c82d7b JH |
4434 | if (new_return_path) |
4435 | return_path = new_return_path; | |
8768d548 | 4436 | else if (!f.expand_string_forcedfail) |
059ec3d9 | 4437 | { |
d6c82d7b JH |
4438 | panicmsg = string_sprintf("Failed to expand return path \"%s\": %s", |
4439 | tp->return_path, expand_string_message); | |
fa41615d | 4440 | goto enq_continue; |
059ec3d9 | 4441 | } |
059ec3d9 PH |
4442 | } |
4443 | ||
929ba01c PH |
4444 | /* Find the uid, gid, and use_initgroups setting for this transport. Failure |
4445 | logs and sets up error messages, so we just post-process and continue with | |
4446 | the next address. */ | |
4447 | ||
4448 | if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) | |
4449 | { | |
d6c82d7b | 4450 | panicmsg = NULL; |
fa41615d | 4451 | goto enq_continue; |
929ba01c PH |
4452 | } |
4453 | ||
059ec3d9 PH |
4454 | /* If this transport has a setup function, call it now so that it gets |
4455 | run in this process and not in any subprocess. That way, the results of | |
929ba01c PH |
4456 | any setup that are retained by the transport can be reusable. One of the |
4457 | things the setup does is to set the fallback host lists in the addresses. | |
4458 | That is why it is called at this point, before the continue delivery | |
4459 | processing, because that might use the fallback hosts. */ | |
059ec3d9 | 4460 | |
d6c82d7b | 4461 | if (tp->setup) |
929ba01c | 4462 | (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL)); |
059ec3d9 | 4463 | |
57cc2785 JH |
4464 | /* If we have a connection still open from a verify stage (lazy-close) |
4465 | treat it as if it is a continued connection (apart from the counter used | |
4466 | for the log line mark). */ | |
4467 | ||
74f1a423 | 4468 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 JH |
4469 | { |
4470 | DEBUG(D_deliver) | |
4471 | debug_printf("lazy-callout-close: have conn still open from verification\n"); | |
4472 | continue_transport = cutthrough.transport; | |
4473 | continue_hostname = string_copy(cutthrough.host.name); | |
4474 | continue_host_address = string_copy(cutthrough.host.address); | |
4475 | continue_sequence = 1; | |
4476 | sending_ip_address = cutthrough.snd_ip; | |
4477 | sending_port = cutthrough.snd_port; | |
4478 | smtp_peer_options = cutthrough.peer_options; | |
4479 | } | |
4480 | ||
059ec3d9 PH |
4481 | /* If this is a run to continue delivery down an already-established |
4482 | channel, check that this set of addresses matches the transport and | |
4483 | the channel. If it does not, defer the addresses. If a host list exists, | |
4484 | we must check that the continue host is on the list. Otherwise, the | |
4485 | host is set in the transport. */ | |
4486 | ||
8768d548 | 4487 | f.continue_more = FALSE; /* In case got set for the last lot */ |
d6c82d7b | 4488 | if (continue_transport) |
059ec3d9 PH |
4489 | { |
4490 | BOOL ok = Ustrcmp(continue_transport, tp->name) == 0; | |
e39fdc85 JH |
4491 | |
4492 | /* If the transport is about to override the host list do not check | |
4493 | it here but take the cost of running the transport process to discover | |
4494 | if the continued_hostname connection is suitable. This is a layering | |
4495 | violation which is unfortunate as it requires we haul in the smtp | |
4496 | include file. */ | |
4497 | ||
4498 | if (ok) | |
059ec3d9 | 4499 | { |
e39fdc85 JH |
4500 | smtp_transport_options_block * ob; |
4501 | ||
d7571ac5 | 4502 | if ( !( Ustrcmp(tp->info->driver_name, "smtp") == 0 |
e39fdc85 JH |
4503 | && (ob = (smtp_transport_options_block *)tp->options_block) |
4504 | && ob->hosts_override && ob->hosts | |
4505 | ) | |
4506 | && addr->host_list | |
4507 | ) | |
4508 | { | |
e39fdc85 | 4509 | ok = FALSE; |
d7978c0f | 4510 | for (host_item * h = addr->host_list; h; h = h->next) |
e39fdc85 JH |
4511 | if (Ustrcmp(h->name, continue_hostname) == 0) |
4512 | /*XXX should also check port here */ | |
4513 | { ok = TRUE; break; } | |
4514 | } | |
059ec3d9 PH |
4515 | } |
4516 | ||
4517 | /* Addresses not suitable; defer or queue for fallback hosts (which | |
4518 | might be the continue host) and skip to next address. */ | |
4519 | ||
4520 | if (!ok) | |
4521 | { | |
e47252f5 JH |
4522 | DEBUG(D_deliver) debug_printf("not suitable for continue_transport (%s)\n", |
4523 | Ustrcmp(continue_transport, tp->name) != 0 | |
4524 | ? string_sprintf("tpt %s vs %s", continue_transport, tp->name) | |
4525 | : string_sprintf("no host matching %s", continue_hostname)); | |
fa41615d | 4526 | if (serialize_key) enq_end(serialize_key); |
059ec3d9 | 4527 | |
d6c82d7b | 4528 | if (addr->fallback_hosts && !fallback) |
059ec3d9 | 4529 | { |
fa41615d | 4530 | for (next = addr; ; next = next->next) |
059ec3d9 PH |
4531 | { |
4532 | next->host_list = next->fallback_hosts; | |
4533 | DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address); | |
d6c82d7b | 4534 | if (!next->next) break; |
059ec3d9 PH |
4535 | } |
4536 | next->next = addr_fallback; | |
4537 | addr_fallback = addr; | |
4538 | } | |
4539 | ||
e3b1f624 | 4540 | else |
3070ceee | 4541 | { |
e3b1f624 JH |
4542 | for (next = addr; ; next = next->next) |
4543 | { | |
4544 | DEBUG(D_deliver) debug_printf(" %s to def list\n", next->address); | |
4545 | if (!next->next) break; | |
4546 | } | |
3070ceee JH |
4547 | next->next = addr_defer; |
4548 | addr_defer = addr; | |
4549 | } | |
059ec3d9 PH |
4550 | |
4551 | continue; | |
4552 | } | |
4553 | ||
4554 | /* Set a flag indicating whether there are further addresses that list | |
4555 | the continued host. This tells the transport to leave the channel open, | |
6c140c01 JH |
4556 | but not to pass it to another delivery process. We'd like to do that |
4557 | for non-continue_transport cases too but the knowlege of which host is | |
4558 | connected to is too hard to manage. Perhaps we need a finer-grain | |
4559 | interface to the transport. */ | |
059ec3d9 | 4560 | |
8768d548 | 4561 | for (next = addr_remote; next && !f.continue_more; next = next->next) |
d7978c0f | 4562 | for (host_item * h = next->host_list; h; h = h->next) |
059ec3d9 | 4563 | if (Ustrcmp(h->name, continue_hostname) == 0) |
8768d548 | 4564 | { f.continue_more = TRUE; break; } |
059ec3d9 PH |
4565 | } |
4566 | ||
4567 | /* The transports set up the process info themselves as they may connect | |
4568 | to more than one remote machine. They also have to set up the filter | |
4569 | arguments, if required, so that the host name and address are available | |
4570 | for expansion. */ | |
4571 | ||
4572 | transport_filter_argv = NULL; | |
4573 | ||
059ec3d9 PH |
4574 | /* Create the pipe for inter-process communication. If pipe creation |
4575 | fails, it is probably because the value of remote_max_parallel is so | |
4576 | large that too many file descriptors for pipes have been created. Arrange | |
4577 | to wait for a process to finish, and then try again. If we still can't | |
4578 | create a pipe when all processes have finished, break the retry loop. */ | |
4579 | ||
4580 | while (!pipe_done) | |
4581 | { | |
4582 | if (pipe(pfd) == 0) pipe_done = TRUE; | |
4583 | else if (parcount > 0) parmax = parcount; | |
4584 | else break; | |
4585 | ||
4586 | /* We need to make the reading end of the pipe non-blocking. There are | |
4587 | two different options for this. Exim is cunningly (I hope!) coded so | |
4588 | that it can use either of them, though it prefers O_NONBLOCK, which | |
4589 | distinguishes between EOF and no-more-data. */ | |
4590 | ||
4c0a7a9c HSHR |
4591 | /* The data appears in a timely manner and we already did a select on |
4592 | all pipes, so I do not see a reason to use non-blocking IO here | |
4593 | ||
a7538db1 | 4594 | #ifdef O_NONBLOCK |
ff790e47 | 4595 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK); |
a7538db1 | 4596 | #else |
ff790e47 | 4597 | (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY); |
a7538db1 | 4598 | #endif |
4c0a7a9c | 4599 | */ |
059ec3d9 PH |
4600 | |
4601 | /* If the maximum number of subprocesses already exist, wait for a process | |
4602 | to finish. If we ran out of file descriptors, parmax will have been reduced | |
4603 | from its initial value of remote_max_parallel. */ | |
4604 | ||
4605 | par_reduce(parmax - 1, fallback); | |
4606 | } | |
4607 | ||
4608 | /* If we failed to create a pipe and there were no processes to wait | |
4609 | for, we have to give up on this one. Do this outside the above loop | |
4610 | so that we can continue the main loop. */ | |
4611 | ||
4612 | if (!pipe_done) | |
4613 | { | |
d6c82d7b | 4614 | panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno)); |
fa41615d | 4615 | goto enq_continue; |
059ec3d9 PH |
4616 | } |
4617 | ||
4618 | /* Find a free slot in the pardata list. Must do this after the possible | |
4619 | waiting for processes to finish, because a terminating process will free | |
4620 | up a slot. */ | |
4621 | ||
4622 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
d6c82d7b JH |
4623 | if (parlist[poffset].pid == 0) |
4624 | break; | |
059ec3d9 PH |
4625 | |
4626 | /* If there isn't one, there has been a horrible disaster. */ | |
4627 | ||
4628 | if (poffset >= remote_max_parallel) | |
4629 | { | |
f1e894f3 PH |
4630 | (void)close(pfd[pipe_write]); |
4631 | (void)close(pfd[pipe_read]); | |
d6c82d7b | 4632 | panicmsg = US"Unexpectedly no free subprocess slot"; |
fa41615d | 4633 | goto enq_continue; |
059ec3d9 PH |
4634 | } |
4635 | ||
4636 | /* Now fork a subprocess to do the remote delivery, but before doing so, | |
4c04137d | 4637 | ensure that any cached resources are released so as not to interfere with |
059ec3d9 PH |
4638 | what happens in the subprocess. */ |
4639 | ||
4640 | search_tidyup(); | |
4641 | ||
4642 | if ((pid = fork()) == 0) | |
4643 | { | |
4644 | int fd = pfd[pipe_write]; | |
4645 | host_item *h; | |
4646 | ||
2a47f028 JH |
4647 | /* Setting this global in the subprocess means we need never clear it */ |
4648 | transport_name = tp->name; | |
059ec3d9 | 4649 | |
2a47f028 | 4650 | /* There are weird circumstances in which logging is disabled */ |
8768d548 | 4651 | f.disable_logging = tp->disable_logging; |
059ec3d9 PH |
4652 | |
4653 | /* Show pids on debug output if parallelism possible */ | |
4654 | ||
d6c82d7b | 4655 | if (parmax > 1 && (parcount > 0 || addr_remote)) |
059ec3d9 PH |
4656 | { |
4657 | DEBUG(D_any|D_v) debug_selector |= D_pid; | |
4658 | DEBUG(D_deliver) debug_printf("Remote delivery process started\n"); | |
4659 | } | |
4660 | ||
4661 | /* Reset the random number generator, so different processes don't all | |
4662 | have the same sequence. In the test harness we want different, but | |
4663 | predictable settings for each delivery process, so do something explicit | |
4664 | here rather they rely on the fixed reset in the random number function. */ | |
4665 | ||
8768d548 | 4666 | random_seed = f.running_in_test_harness ? 42 + 2*delivery_count : 0; |
059ec3d9 PH |
4667 | |
4668 | /* Set close-on-exec on the pipe so that it doesn't get passed on to | |
4669 | a new process that may be forked to do another delivery down the same | |
4670 | SMTP connection. */ | |
4671 | ||
ff790e47 | 4672 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
059ec3d9 PH |
4673 | |
4674 | /* Close open file descriptors for the pipes of other processes | |
4675 | that are running in parallel. */ | |
4676 | ||
4677 | for (poffset = 0; poffset < remote_max_parallel; poffset++) | |
f1e894f3 | 4678 | if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd); |
059ec3d9 PH |
4679 | |
4680 | /* This process has inherited a copy of the file descriptor | |
4681 | for the data file, but its file pointer is shared with all the | |
4682 | other processes running in parallel. Therefore, we have to re-open | |
4683 | the file in order to get a new file descriptor with its own | |
4684 | file pointer. We don't need to lock it, as the lock is held by | |
4685 | the parent process. There doesn't seem to be any way of doing | |
4686 | a dup-with-new-file-pointer. */ | |
4687 | ||
f1e894f3 | 4688 | (void)close(deliver_datafile); |
41313d92 JH |
4689 | { |
4690 | uschar * fname = spool_fname(US"input", message_subdir, message_id, US"-D"); | |
059ec3d9 | 4691 | |
92b0827a JH |
4692 | if ((deliver_datafile = Uopen(fname, |
4693 | #ifdef O_CLOEXEC | |
4694 | O_CLOEXEC | | |
4695 | #endif | |
4696 | O_RDWR | O_APPEND, 0)) < 0) | |
059ec3d9 | 4697 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote " |
41313d92 JH |
4698 | "parallel delivery: %s", fname, strerror(errno)); |
4699 | } | |
059ec3d9 PH |
4700 | |
4701 | /* Set the close-on-exec flag */ | |
92b0827a | 4702 | #ifndef O_CLOEXEC |
ff790e47 | 4703 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
059ec3d9 | 4704 | FD_CLOEXEC); |
92b0827a | 4705 | #endif |
059ec3d9 PH |
4706 | |
4707 | /* Set the uid/gid of this process; bombs out on failure. */ | |
4708 | ||
4709 | exim_setugid(uid, gid, use_initgroups, | |
4710 | string_sprintf("remote delivery to %s with transport=%s", | |
4711 | addr->address, tp->name)); | |
4712 | ||
4713 | /* Close the unwanted half of this process' pipe, set the process state, | |
4714 | and run the transport. Afterwards, transport_count will contain the number | |
4715 | of bytes written. */ | |
4716 | ||
f1e894f3 | 4717 | (void)close(pfd[pipe_read]); |
059ec3d9 PH |
4718 | set_process_info("delivering %s using %s", message_id, tp->name); |
4719 | debug_print_string(tp->debug_string); | |
4720 | if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr); | |
4721 | ||
4722 | set_process_info("delivering %s (just run %s for %s%s in subprocess)", | |
d6c82d7b | 4723 | message_id, tp->name, addr->address, addr->next ? ", ..." : ""); |
059ec3d9 PH |
4724 | |
4725 | /* Ensure any cached resources that we used are now released */ | |
4726 | ||
4727 | search_tidyup(); | |
4728 | ||
4729 | /* Pass the result back down the pipe. This is a lot more information | |
4730 | than is needed for a local delivery. We have to send back the error | |
4731 | status for each address, the usability status for each host that is | |
4732 | flagged as unusable, and all the retry items. When TLS is in use, we | |
4733 | send also the cipher and peerdn information. Each type of information | |
4734 | is flagged by an identifying byte, and is then in a fixed format (with | |
4735 | strings terminated by zeros), and there is a final terminator at the | |
4736 | end. The host information and retry information is all attached to | |
4737 | the first address, so that gets sent at the start. */ | |
4738 | ||
4739 | /* Host unusability information: for most success cases this will | |
4740 | be null. */ | |
4741 | ||
d6c82d7b | 4742 | for (h = addr->host_list; h; h = h->next) |
059ec3d9 | 4743 | { |
d6c82d7b | 4744 | if (!h->address || h->status < hstatus_unusable) continue; |
bd21a787 WB |
4745 | sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address); |
4746 | rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3); | |
059ec3d9 PH |
4747 | } |
4748 | ||
4749 | /* The number of bytes written. This is the same for each address. Even | |
4750 | if we sent several copies of the message down the same connection, the | |
4751 | size of each one is the same, and it's that value we have got because | |
4752 | transport_count gets reset before calling transport_write_message(). */ | |
4753 | ||
bd21a787 WB |
4754 | memcpy(big_buffer, &transport_count, sizeof(transport_count)); |
4755 | rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count)); | |
059ec3d9 | 4756 | |
6f123593 JH |
4757 | /* Information about what happened to each address. Four item types are |
4758 | used: an optional 'X' item first, for TLS information, then an optional "C" | |
4759 | item for any client-auth info followed by 'R' items for any retry settings, | |
4760 | and finally an 'A' item for the remaining data. */ | |
059ec3d9 | 4761 | |
d6c82d7b | 4762 | for(; addr; addr = addr->next) |
059ec3d9 PH |
4763 | { |
4764 | uschar *ptr; | |
059ec3d9 PH |
4765 | |
4766 | /* The certificate verification status goes into the flags */ | |
817d9f57 | 4767 | if (tls_out.certificate_verified) setflag(addr, af_cert_verified); |
c0635b6d | 4768 | #ifdef SUPPORT_DANE |
53a7196b | 4769 | if (tls_out.dane_verified) setflag(addr, af_dane_verified); |
a0a2d1ee | 4770 | #endif |
b10c87b3 JH |
4771 | # ifdef EXPERIMENTAL_TLS_RESUME |
4772 | if (tls_out.resumption & RESUME_USED) setflag(addr, af_tls_resume); | |
4773 | # endif | |
059ec3d9 PH |
4774 | |
4775 | /* Use an X item only if there's something to send */ | |
01603eec | 4776 | #ifndef DISABLE_TLS |
9d1c15ef | 4777 | if (addr->cipher) |
059ec3d9 | 4778 | { |
e6d2a989 | 4779 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1; |
9d1c15ef JH |
4780 | if (!addr->peerdn) |
4781 | *ptr++ = 0; | |
4782 | else | |
5e6d12ac | 4783 | ptr += sprintf(CS ptr, "%.512s", addr->peerdn) + 1; |
9d1c15ef | 4784 | |
bd21a787 | 4785 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); |
059ec3d9 | 4786 | } |
5013d912 JH |
4787 | else if (continue_proxy_cipher) |
4788 | { | |
4789 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", continue_proxy_cipher) + 1; | |
4790 | *ptr++ = 0; | |
4791 | rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer); | |
4792 | } | |
5e6d12ac | 4793 | |
9d1c15ef JH |
4794 | if (addr->peercert) |
4795 | { | |
4796 | ptr = big_buffer; | |
2944124c | 4797 | if (tls_export_cert(ptr, big_buffer_size-2, addr->peercert)) |
9d1c15ef JH |
4798 | while(*ptr++); |
4799 | else | |
4800 | *ptr++ = 0; | |
bd21a787 | 4801 | rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer); |
9d1c15ef JH |
4802 | } |
4803 | if (addr->ourcert) | |
4804 | { | |
4805 | ptr = big_buffer; | |
2944124c | 4806 | if (tls_export_cert(ptr, big_buffer_size-2, addr->ourcert)) |
9d1c15ef JH |
4807 | while(*ptr++); |
4808 | else | |
4809 | *ptr++ = 0; | |
bd21a787 | 4810 | rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer); |
9d1c15ef | 4811 | } |
a7538db1 | 4812 | # ifndef DISABLE_OCSP |
018058b2 JH |
4813 | if (addr->ocsp > OCSP_NOT_REQ) |
4814 | { | |
e6d2a989 | 4815 | ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1; |
bd21a787 | 4816 | rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer); |
018058b2 | 4817 | } |
a7538db1 | 4818 | # endif |
01603eec | 4819 | #endif /*DISABLE_TLS*/ |
059ec3d9 | 4820 | |
6f123593 JH |
4821 | if (client_authenticator) |
4822 | { | |
e6d2a989 | 4823 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1; |
bd21a787 | 4824 | rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer); |
6f123593 JH |
4825 | } |
4826 | if (client_authenticated_id) | |
4827 | { | |
e6d2a989 | 4828 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1; |
bd21a787 | 4829 | rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer); |
6f123593 | 4830 | } |
c8e2fc1e JH |
4831 | if (client_authenticated_sender) |
4832 | { | |
e6d2a989 | 4833 | ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1; |
bd21a787 | 4834 | rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer); |
c8e2fc1e | 4835 | } |
6f123593 | 4836 | |
a7538db1 | 4837 | #ifndef DISABLE_PRDR |
7eb0e5d2 | 4838 | if (testflag(addr, af_prdr_used)) |
bd21a787 | 4839 | rmt_dlv_checked_write(fd, 'P', '0', NULL, 0); |
b75960c8 | 4840 | #endif |
fd98a5c6 | 4841 | |
7c576fca | 4842 | if (testflag(addr, af_pipelining)) |
4e48d56c | 4843 | #ifdef SUPPORT_PIPE_CONNECT |
ee8b8090 JH |
4844 | if (testflag(addr, af_early_pipe)) |
4845 | rmt_dlv_checked_write(fd, 'L', '2', NULL, 0); | |
4846 | else | |
4847 | #endif | |
7c576fca JH |
4848 | rmt_dlv_checked_write(fd, 'L', '1', NULL, 0); |
4849 | ||
7eb0e5d2 | 4850 | if (testflag(addr, af_chunking_used)) |
e0cc6cda JH |
4851 | rmt_dlv_checked_write(fd, 'K', '0', NULL, 0); |
4852 | ||
1ccd5f67 JH |
4853 | if (testflag(addr, af_tcp_fastopen_conn)) |
4854 | rmt_dlv_checked_write(fd, 'T', | |
ee8b8090 JH |
4855 | testflag(addr, af_tcp_fastopen) ? testflag(addr, af_tcp_fastopen_data) |
4856 | ? '2' : '1' : '0', | |
4857 | NULL, 0); | |
a2673768 | 4858 | |
bd21a787 WB |
4859 | memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware)); |
4860 | rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware)); | |
6c1c3d1d | 4861 | |
059ec3d9 PH |
4862 | /* Retry information: for most success cases this will be null. */ |
4863 | ||
dbbf21a7 | 4864 | for (retry_item * r = addr->retries; r; r = r->next) |
059ec3d9 | 4865 | { |
bd21a787 | 4866 | sprintf(CS big_buffer, "%c%.500s", r->flags, r->key); |
059ec3d9 | 4867 | ptr = big_buffer + Ustrlen(big_buffer+2) + 3; |
32dfdf8b | 4868 | memcpy(ptr, &r->basic_errno, sizeof(r->basic_errno)); |
059ec3d9 | 4869 | ptr += sizeof(r->basic_errno); |
32dfdf8b | 4870 | memcpy(ptr, &r->more_errno, sizeof(r->more_errno)); |
059ec3d9 | 4871 | ptr += sizeof(r->more_errno); |
d6c82d7b | 4872 | if (!r->message) *ptr++ = 0; else |
059ec3d9 PH |
4873 | { |
4874 | sprintf(CS ptr, "%.512s", r->message); | |
4875 | while(*ptr++); | |
4876 | } | |
bd21a787 | 4877 | rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4878 | } |
4879 | ||
e6d2a989 JH |
4880 | #ifdef SUPPORT_SOCKS |
4881 | if (LOGGING(proxy) && proxy_session) | |
4882 | { | |
4883 | ptr = big_buffer; | |
4884 | if (proxy_local_address) | |
4885 | { | |
4886 | DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address); | |
4887 | ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1; | |
4888 | DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port); | |
4889 | memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port)); | |
4890 | ptr += sizeof(proxy_local_port); | |
4891 | } | |
4892 | else | |
4893 | *ptr++ = '\0'; | |
4894 | rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer); | |
4895 | } | |
4896 | #endif | |
4897 | ||
895fbaf2 JH |
4898 | #ifdef EXPERIMENTAL_DSN_INFO |
4899 | /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */ | |
4900 | if (addr->smtp_greeting) | |
4901 | { | |
895fbaf2 | 4902 | DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting); |
e6d2a989 | 4903 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1; |
895fbaf2 JH |
4904 | if (addr->helo_response) |
4905 | { | |
4906 | DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response); | |
e6d2a989 | 4907 | ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1; |
895fbaf2 JH |
4908 | } |
4909 | else | |
4910 | *ptr++ = '\0'; | |
4911 | rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer); | |
4912 | } | |
4913 | #endif | |
4914 | ||
4915 | /* The rest of the information goes in an 'A0' item. */ | |
059ec3d9 | 4916 | |
e6d2a989 | 4917 | sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action); |
895fbaf2 | 4918 | ptr = big_buffer + 2; |
32dfdf8b | 4919 | memcpy(ptr, &addr->basic_errno, sizeof(addr->basic_errno)); |
059ec3d9 | 4920 | ptr += sizeof(addr->basic_errno); |
32dfdf8b | 4921 | memcpy(ptr, &addr->more_errno, sizeof(addr->more_errno)); |
059ec3d9 | 4922 | ptr += sizeof(addr->more_errno); |
32dfdf8b JH |
4923 | memcpy(ptr, &addr->delivery_usec, sizeof(addr->delivery_usec)); |
4924 | ptr += sizeof(addr->delivery_usec); | |
4925 | memcpy(ptr, &addr->flags, sizeof(addr->flags)); | |
059ec3d9 PH |
4926 | ptr += sizeof(addr->flags); |
4927 | ||
d6c82d7b | 4928 | if (!addr->message) *ptr++ = 0; else |
e6d2a989 | 4929 | ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1; |
059ec3d9 | 4930 | |
d6c82d7b | 4931 | if (!addr->user_message) *ptr++ = 0; else |
e6d2a989 | 4932 | ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1; |
059ec3d9 | 4933 | |
d6c82d7b | 4934 | if (!addr->host_used) *ptr++ = 0; else |
059ec3d9 | 4935 | { |
e6d2a989 JH |
4936 | ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1; |
4937 | ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1; | |
32dfdf8b | 4938 | memcpy(ptr, &addr->host_used->port, sizeof(addr->host_used->port)); |
059ec3d9 | 4939 | ptr += sizeof(addr->host_used->port); |
783b385f JH |
4940 | |
4941 | /* DNS lookup status */ | |
4942 | *ptr++ = addr->host_used->dnssec==DS_YES ? '2' | |
4943 | : addr->host_used->dnssec==DS_NO ? '1' : '0'; | |
4944 | ||
059ec3d9 | 4945 | } |
bd21a787 | 4946 | rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer); |
059ec3d9 PH |
4947 | } |
4948 | ||
aeaf5db3 | 4949 | /* Local interface address/port */ |
895fbaf2 JH |
4950 | #ifdef EXPERIMENTAL_DSN_INFO |
4951 | if (sending_ip_address) | |
4952 | #else | |
6c6d6e48 | 4953 | if (LOGGING(incoming_interface) && sending_ip_address) |
895fbaf2 | 4954 | #endif |
aeaf5db3 | 4955 | { |
e6d2a989 JH |
4956 | uschar * ptr; |
4957 | ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1; | |
4958 | ptr += sprintf(CS ptr, "%d", sending_port) + 1; | |
aeaf5db3 JH |
4959 | rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer); |
4960 | } | |
4961 | ||
059ec3d9 PH |
4962 | /* Add termination flag, close the pipe, and that's it. The character |
4963 | after 'Z' indicates whether continue_transport is now NULL or not. | |
4964 | A change from non-NULL to NULL indicates a problem with a continuing | |
4965 | connection. */ | |
4966 | ||
d6c82d7b | 4967 | big_buffer[0] = continue_transport ? '1' : '0'; |
bd21a787 | 4968 | rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1); |
f1e894f3 | 4969 | (void)close(fd); |
059ec3d9 PH |
4970 | exit(EXIT_SUCCESS); |
4971 | } | |
4972 | ||
4973 | /* Back in the mainline: close the unwanted half of the pipe. */ | |
4974 | ||
f1e894f3 | 4975 | (void)close(pfd[pipe_write]); |
059ec3d9 | 4976 | |
57cc2785 JH |
4977 | /* If we have a connection still open from a verify stage (lazy-close) |
4978 | release its TLS library context (if any) as responsibility was passed to | |
4979 | the delivery child process. */ | |
4980 | ||
74f1a423 | 4981 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 | 4982 | { |
01603eec | 4983 | #ifndef DISABLE_TLS |
74f1a423 JH |
4984 | if (cutthrough.is_tls) |
4985 | tls_close(cutthrough.cctx.tls_ctx, TLS_NO_SHUTDOWN); | |
57cc2785 | 4986 | #endif |
74f1a423 | 4987 | (void) close(cutthrough.cctx.sock); |
57cc2785 JH |
4988 | release_cutthrough_connection(US"passed to transport proc"); |
4989 | } | |
4990 | ||
059ec3d9 PH |
4991 | /* Fork failed; defer with error message */ |
4992 | ||
2cee425a | 4993 | if (pid == -1) |
059ec3d9 | 4994 | { |
f1e894f3 | 4995 | (void)close(pfd[pipe_read]); |
d6c82d7b JH |
4996 | panicmsg = string_sprintf("fork failed for remote delivery to %s: %s", |
4997 | addr->domain, strerror(errno)); | |
fa41615d | 4998 | goto enq_continue; |
059ec3d9 PH |
4999 | } |
5000 | ||
5001 | /* Fork succeeded; increment the count, and remember relevant data for | |
5002 | when the process finishes. */ | |
5003 | ||
5004 | parcount++; | |
5005 | parlist[poffset].addrlist = parlist[poffset].addr = addr; | |
5006 | parlist[poffset].pid = pid; | |
5007 | parlist[poffset].fd = pfd[pipe_read]; | |
5008 | parlist[poffset].done = FALSE; | |
5009 | parlist[poffset].msg = NULL; | |
5010 | parlist[poffset].return_path = return_path; | |
5011 | ||
5012 | /* If the process we've just started is sending a message down an existing | |
5013 | channel, wait for it now. This ensures that only one such process runs at | |
5014 | once, whatever the value of remote_max parallel. Otherwise, we might try to | |
5015 | send two or more messages simultaneously down the same channel. This could | |
5016 | happen if there are different domains that include the same host in otherwise | |
5017 | different host lists. | |
5018 | ||
5019 | Also, if the transport closes down the channel, this information gets back | |
5020 | (continue_transport gets set to NULL) before we consider any other addresses | |
5021 | in this message. */ | |
5022 | ||
d6c82d7b | 5023 | if (continue_transport) par_reduce(0, fallback); |
059ec3d9 PH |
5024 | |
5025 | /* Otherwise, if we are running in the test harness, wait a bit, to let the | |
5026 | newly created process get going before we create another process. This should | |
5027 | ensure repeatability in the tests. We only need to wait a tad. */ | |
5028 | ||
9f01e50d | 5029 | else testharness_pause_ms(500); |
d6c82d7b JH |
5030 | |
5031 | continue; | |
5032 | ||
fa41615d JH |
5033 | enq_continue: |
5034 | if (serialize_key) enq_end(serialize_key); | |
d6c82d7b JH |
5035 | panic_continue: |
5036 | remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback); | |
5037 | continue; | |
059ec3d9 PH |
5038 | } |
5039 | ||
5040 | /* Reached the end of the list of addresses. Wait for all the subprocesses that | |
5041 | are still running and post-process their addresses. */ | |
5042 | ||
5043 | par_reduce(0, fallback); | |
5044 | return TRUE; | |
5045 | } | |
5046 | ||
5047 | ||
5048 | ||
5049 | ||
5050 | /************************************************* | |
5051 | * Split an address into local part and domain * | |
5052 | *************************************************/ | |
5053 | ||
5054 | /* This function initializes an address for routing by splitting it up into a | |
5055 | local part and a domain. The local part is set up twice - once in its original | |
5056 | casing, and once in lower case, and it is dequoted. We also do the "percent | |
5057 | hack" for configured domains. This may lead to a DEFER result if a lookup | |
5058 | defers. When a percent-hacking takes place, we insert a copy of the original | |
5059 | address as a new parent of this address, as if we have had a redirection. | |
5060 | ||
5061 | Argument: | |
5062 | addr points to an addr_item block containing the address | |
5063 | ||
5064 | Returns: OK | |
5065 | DEFER - could not determine if domain is %-hackable | |
5066 | */ | |
5067 | ||
5068 | int | |
fb5908b1 | 5069 | deliver_split_address(address_item * addr) |
059ec3d9 | 5070 | { |
fb5908b1 JH |
5071 | uschar * address = addr->address; |
5072 | uschar * domain; | |
5073 | uschar * t; | |
5074 | int len; | |
059ec3d9 | 5075 | |
fb5908b1 JH |
5076 | if (!(domain = Ustrrchr(address, '@'))) |
5077 | return DEFER; /* should always have a domain, but just in case... */ | |
5078 | ||
5079 | len = domain - address; | |
059ec3d9 PH |
5080 | addr->domain = string_copylc(domain+1); /* Domains are always caseless */ |
5081 | ||
5082 | /* The implication in the RFCs (though I can't say I've seen it spelled out | |
5083 | explicitly) is that quoting should be removed from local parts at the point | |
5084 | where they are locally interpreted. [The new draft "821" is more explicit on | |
5085 | this, Jan 1999.] We know the syntax is valid, so this can be done by simply | |
5086 | removing quoting backslashes and any unquoted doublequotes. */ | |
5087 | ||
f3ebb786 | 5088 | t = addr->cc_local_part = store_get(len+1, is_tainted(address)); |
059ec3d9 PH |
5089 | while(len-- > 0) |
5090 | { | |
fb5908b1 | 5091 | int c = *address++; |
059ec3d9 PH |
5092 | if (c == '\"') continue; |
5093 | if (c == '\\') | |
5094 | { | |
5095 | *t++ = *address++; | |
5096 | len--; | |
5097 | } | |
5098 | else *t++ = c; | |
5099 | } | |
5100 | *t = 0; | |
5101 | ||
5102 | /* We do the percent hack only for those domains that are listed in | |
5103 | percent_hack_domains. A loop is required, to copy with multiple %-hacks. */ | |
5104 | ||
d6c82d7b | 5105 | if (percent_hack_domains) |
059ec3d9 PH |
5106 | { |
5107 | int rc; | |
5108 | uschar *new_address = NULL; | |
5109 | uschar *local_part = addr->cc_local_part; | |
5110 | ||
5111 | deliver_domain = addr->domain; /* set $domain */ | |
5112 | ||
d6c82d7b JH |
5113 | while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0, |
5114 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) | |
5115 | == OK | |
5116 | && (t = Ustrrchr(local_part, '%')) != NULL | |
5117 | ) | |
059ec3d9 PH |
5118 | { |
5119 | new_address = string_copy(local_part); | |
5120 | new_address[t - local_part] = '@'; | |
5121 | deliver_domain = string_copylc(t+1); | |
5122 | local_part = string_copyn(local_part, t - local_part); | |
5123 | } | |
5124 | ||
5125 | if (rc == DEFER) return DEFER; /* lookup deferred */ | |
5126 | ||
5127 | /* If hackery happened, set up new parent and alter the current address. */ | |
5128 | ||
d6c82d7b | 5129 | if (new_address) |
059ec3d9 | 5130 | { |
f3ebb786 | 5131 | address_item *new_parent = store_get(sizeof(address_item), FALSE); |
059ec3d9 PH |
5132 | *new_parent = *addr; |
5133 | addr->parent = new_parent; | |
82f90600 | 5134 | new_parent->child_count = 1; |
059ec3d9 PH |
5135 | addr->address = new_address; |
5136 | addr->unique = string_copy(new_address); | |
5137 | addr->domain = deliver_domain; | |
5138 | addr->cc_local_part = local_part; | |
5139 | DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n", | |
5140 | addr->address); | |
5141 | } | |
5142 | } | |
5143 | ||
5144 | /* Create the lowercased version of the final local part, and make that the | |
5145 | default one to be used. */ | |
5146 | ||
5147 | addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part); | |
5148 | return OK; | |
5149 | } | |
5150 | ||
5151 | ||
5152 | ||
5153 | ||
5154 | /************************************************* | |
5155 | * Get next error message text * | |
5156 | *************************************************/ | |
5157 | ||
5158 | /* If f is not NULL, read the next "paragraph", from a customized error message | |
5159 | text file, terminated by a line containing ****, and expand it. | |
5160 | ||
5161 | Arguments: | |
5162 | f NULL or a file to read from | |
5163 | which string indicating which string (for errors) | |
5164 | ||
5165 | Returns: NULL or an expanded string | |
5166 | */ | |
5167 | ||
5168 | static uschar * | |
5169 | next_emf(FILE *f, uschar *which) | |
5170 | { | |
acec9514 JH |
5171 | uschar *yield; |
5172 | gstring * para; | |
059ec3d9 PH |
5173 | uschar buffer[256]; |
5174 | ||
d6c82d7b | 5175 | if (!f) return NULL; |
059ec3d9 | 5176 | |
d6c82d7b JH |
5177 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
5178 | return NULL; | |
059ec3d9 | 5179 | |
acec9514 | 5180 | para = string_get(256); |
059ec3d9 PH |
5181 | for (;;) |
5182 | { | |
acec9514 | 5183 | para = string_cat(para, buffer); |
d6c82d7b JH |
5184 | if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0) |
5185 | break; | |
059ec3d9 | 5186 | } |
acec9514 | 5187 | if ((yield = expand_string(string_from_gstring(para)))) |
d6c82d7b | 5188 | return yield; |
059ec3d9 PH |
5189 | |
5190 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from " | |
5191 | "bounce_message_file or warn_message_file (%s): %s", which, | |
5192 | expand_string_message); | |
5193 | return NULL; | |
5194 | } | |
5195 | ||
5196 | ||
5197 | ||
5198 | ||
5199 | /************************************************* | |
5200 | * Close down a passed transport channel * | |
5201 | *************************************************/ | |
5202 | ||
5203 | /* This function is called when a passed transport channel cannot be used. | |
5204 | It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED | |
5205 | so that the function call can be the argument of a "return" statement. | |
5206 | ||
5207 | Arguments: None | |
5208 | Returns: DELIVER_NOT_ATTEMPTED | |
5209 | */ | |
5210 | ||
5211 | static int | |
5212 | continue_closedown(void) | |
5213 | { | |
d6c82d7b | 5214 | if (continue_transport) |
d7978c0f | 5215 | for (transport_instance * t = transports; t; t = t->next) |
059ec3d9 PH |
5216 | if (Ustrcmp(t->name, continue_transport) == 0) |
5217 | { | |
d6c82d7b | 5218 | if (t->info->closedown) (t->info->closedown)(t); |
059ec3d9 PH |
5219 | break; |
5220 | } | |
059ec3d9 PH |
5221 | return DELIVER_NOT_ATTEMPTED; |
5222 | } | |
5223 | ||
5224 | ||
5225 | ||
5226 | ||
5227 | /************************************************* | |
5228 | * Print address information * | |
5229 | *************************************************/ | |
5230 | ||
5231 | /* This function is called to output an address, or information about an | |
5232 | address, for bounce or defer messages. If the hide_child flag is set, all we | |
5233 | output is the original ancestor address. | |
5234 | ||
5235 | Arguments: | |
5236 | addr points to the address | |
5237 | f the FILE to print to | |
5238 | si an initial string | |
5239 | sc a continuation string for before "generated" | |
5240 | se an end string | |
5241 | ||
5242 | Returns: TRUE if the address is not hidden | |
5243 | */ | |
5244 | ||
5245 | static BOOL | |
5246 | print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc, | |
5247 | uschar *se) | |
5248 | { | |
5249 | BOOL yield = TRUE; | |
5250 | uschar *printed = US""; | |
5251 | address_item *ancestor = addr; | |
d6c82d7b | 5252 | while (ancestor->parent) ancestor = ancestor->parent; |
059ec3d9 PH |
5253 | |
5254 | fprintf(f, "%s", CS si); | |
5255 | ||
d6c82d7b | 5256 | if (addr->parent && testflag(addr, af_hide_child)) |
059ec3d9 PH |
5257 | { |
5258 | printed = US"an undisclosed address"; | |
5259 | yield = FALSE; | |
5260 | } | |
d6c82d7b | 5261 | else if (!testflag(addr, af_pfr) || !addr->parent) |
059ec3d9 PH |
5262 | printed = addr->address; |
5263 | ||
5264 | else | |
5265 | { | |
5266 | uschar *s = addr->address; | |
5267 | uschar *ss; | |
5268 | ||
5269 | if (addr->address[0] == '>') { ss = US"mail"; s++; } | |
5270 | else if (addr->address[0] == '|') ss = US"pipe"; | |
5271 | else ss = US"save"; | |
5272 | ||
5273 | fprintf(f, "%s to %s%sgenerated by ", ss, s, sc); | |
5274 | printed = addr->parent->address; | |
5275 | } | |
5276 | ||
5277 | fprintf(f, "%s", CS string_printing(printed)); | |
5278 | ||
5279 | if (ancestor != addr) | |
5280 | { | |
d6c82d7b JH |
5281 | uschar *original = ancestor->onetime_parent; |
5282 | if (!original) original= ancestor->address; | |
059ec3d9 PH |
5283 | if (strcmpic(original, printed) != 0) |
5284 | fprintf(f, "%s(%sgenerated from %s)", sc, | |
d6c82d7b | 5285 | ancestor != addr->parent ? "ultimately " : "", |
059ec3d9 PH |
5286 | string_printing(original)); |
5287 | } | |
5288 | ||
c562fd30 JH |
5289 | if (addr->host_used) |
5290 | fprintf(f, "\n host %s [%s]", | |
5291 | addr->host_used->name, addr->host_used->address); | |
5292 | ||
059ec3d9 PH |
5293 | fprintf(f, "%s", CS se); |
5294 | return yield; | |
5295 | } | |
5296 | ||
5297 | ||
5298 | ||
5299 | ||
5300 | ||
059ec3d9 PH |
5301 | /************************************************* |
5302 | * Print error for an address * | |
5303 | *************************************************/ | |
5304 | ||
5305 | /* This function is called to print the error information out of an address for | |
5306 | a bounce or a warning message. It tries to format the message reasonably by | |
5307 | introducing newlines. All lines are indented by 4; the initial printing | |
5308 | position must be set before calling. | |
5309 | ||
447d236c | 5310 | This function used always to print the error. Nowadays we want to restrict it |
75def545 PH |
5311 | to cases such as LMTP/SMTP errors from a remote host, and errors from :fail: |
5312 | and filter "fail". We no longer pass other information willy-nilly in bounce | |
5313 | and warning messages. Text in user_message is always output; text in message | |
5314 | only if the af_pass_message flag is set. | |
447d236c | 5315 | |
059ec3d9 | 5316 | Arguments: |
447d236c | 5317 | addr the address |
059ec3d9 | 5318 | f the FILE to print on |
75def545 | 5319 | t some leading text |
059ec3d9 PH |
5320 | |
5321 | Returns: nothing | |
5322 | */ | |
5323 | ||
5324 | static void | |
447d236c | 5325 | print_address_error(address_item *addr, FILE *f, uschar *t) |
059ec3d9 | 5326 | { |
447d236c | 5327 | int count = Ustrlen(t); |
de6f74f2 | 5328 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
447d236c | 5329 | |
0ba0ee97 JH |
5330 | if (!s && !(s = addr->user_message)) |
5331 | return; | |
447d236c PH |
5332 | |
5333 | fprintf(f, "\n %s", t); | |
5334 | ||
0ba0ee97 | 5335 | while (*s) |
447d236c PH |
5336 | if (*s == '\\' && s[1] == 'n') |
5337 | { | |
5338 | fprintf(f, "\n "); | |
5339 | s += 2; | |
5340 | count = 0; | |
5341 | } | |
5342 | else | |
059ec3d9 | 5343 | { |
447d236c PH |
5344 | fputc(*s, f); |
5345 | count++; | |
5346 | if (*s++ == ':' && isspace(*s) && count > 45) | |
059ec3d9 | 5347 | { |
447d236c | 5348 | fprintf(f, "\n "); /* sic (because space follows) */ |
059ec3d9 PH |
5349 | count = 0; |
5350 | } | |
059ec3d9 | 5351 | } |
059ec3d9 PH |
5352 | } |
5353 | ||
5354 | ||
21bc4865 WB |
5355 | /*********************************************************** |
5356 | * Print Diagnostic-Code for an address * | |
5357 | ************************************************************/ | |
5358 | ||
5359 | /* This function is called to print the error information out of an address for | |
5360 | a bounce or a warning message. It tries to format the message reasonably as | |
5361 | required by RFC 3461 by adding a space after each newline | |
5362 | ||
ca410e79 WB |
5363 | it uses the same logic as print_address_error() above. if af_pass_message is true |
5364 | and addr->message is set it uses the remote host answer. if not addr->user_message | |
5365 | is used instead if available. | |
21bc4865 WB |
5366 | |
5367 | Arguments: | |
5368 | addr the address | |
5369 | f the FILE to print on | |
5370 | ||
5371 | Returns: nothing | |
5372 | */ | |
5373 | ||
5374 | static void | |
5375 | print_dsn_diagnostic_code(const address_item *addr, FILE *f) | |
5376 | { | |
ca410e79 | 5377 | uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL; |
21bc4865 | 5378 | |
ca410e79 WB |
5379 | /* af_pass_message and addr->message set ? print remote host answer */ |
5380 | if (s) | |
5381 | { | |
5382 | DEBUG(D_deliver) | |
5383 | debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message); | |
447d236c | 5384 | |
ca410e79 WB |
5385 | /* search first ": ". we assume to find the remote-MTA answer there */ |
5386 | if (!(s = Ustrstr(addr->message, ": "))) | |
5387 | return; /* not found, bail out */ | |
5388 | s += 2; /* skip ": " */ | |
5389 | fprintf(f, "Diagnostic-Code: smtp; "); | |
5390 | } | |
ca410e79 | 5391 | /* no message available. do nothing */ |
9031f51a | 5392 | else return; |
21bc4865 | 5393 | |
21bc4865 WB |
5394 | while (*s) |
5395 | if (*s == '\\' && s[1] == 'n') | |
5396 | { | |
5397 | fputs("\n ", f); /* as defined in RFC 3461 */ | |
5398 | s += 2; | |
5399 | } | |
5400 | else | |
5401 | fputc(*s++, f); | |
5402 | ||
5403 | fputc('\n', f); | |
5404 | } | |
447d236c PH |
5405 | |
5406 | ||
d7174846 PH |
5407 | /************************************************* |
5408 | * Check list of addresses for duplication * | |
5409 | *************************************************/ | |
5410 | ||
5411 | /* This function was introduced when the test for duplicate addresses that are | |
5412 | not pipes, files, or autoreplies was moved from the middle of routing to when | |
5413 | routing was complete. That was to fix obscure cases when the routing history | |
dbcef0ea PH |
5414 | affects the subsequent routing of identical addresses. This function is called |
5415 | after routing, to check that the final routed addresses are not duplicates. | |
d7174846 | 5416 | |
dbcef0ea PH |
5417 | If we detect a duplicate, we remember what it is a duplicate of. Note that |
5418 | pipe, file, and autoreply de-duplication is handled during routing, so we must | |
5419 | leave such "addresses" alone here, as otherwise they will incorrectly be | |
5420 | discarded. | |
d7174846 PH |
5421 | |
5422 | Argument: address of list anchor | |
5423 | Returns: nothing | |
5424 | */ | |
5425 | ||
5426 | static void | |
5427 | do_duplicate_check(address_item **anchor) | |
5428 | { | |
5429 | address_item *addr; | |
d6c82d7b | 5430 | while ((addr = *anchor)) |
d7174846 PH |
5431 | { |
5432 | tree_node *tnode; | |
5433 | if (testflag(addr, af_pfr)) | |
5434 | { | |
5435 | anchor = &(addr->next); | |
5436 | } | |
d6c82d7b | 5437 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
d7174846 PH |
5438 | { |
5439 | DEBUG(D_deliver|D_route) | |
5440 | debug_printf("%s is a duplicate address: discarded\n", addr->unique); | |
5441 | *anchor = addr->next; | |
5442 | addr->dupof = tnode->data.ptr; | |
5443 | addr->next = addr_duplicate; | |
5444 | addr_duplicate = addr; | |
5445 | } | |
5446 | else | |
5447 | { | |
5448 | tree_add_duplicate(addr->unique, addr); | |
5449 | anchor = &(addr->next); | |
5450 | } | |
5451 | } | |
5452 | } | |
5453 | ||
5454 | ||
5455 | ||
059ec3d9 | 5456 | |
436bda2a JH |
5457 | /************************************************/ |
5458 | ||
5459 | static void | |
5460 | print_dsn_addr_action(FILE * f, address_item * addr, | |
5461 | uschar * action, uschar * status) | |
5462 | { | |
5463 | address_item * pa; | |
5464 | ||
5465 | if (addr->dsn_orcpt) | |
5466 | fprintf(f,"Original-Recipient: %s\n", addr->dsn_orcpt); | |
5467 | ||
5468 | for (pa = addr; pa->parent; ) pa = pa->parent; | |
5469 | fprintf(f, "Action: %s\n" | |
5470 | "Final-Recipient: rfc822;%s\n" | |
5471 | "Status: %s\n", | |
5472 | action, pa->address, status); | |
5473 | } | |
5474 | ||
5475 | ||
059ec3d9 PH |
5476 | /************************************************* |
5477 | * Deliver one message * | |
5478 | *************************************************/ | |
5479 | ||
5480 | /* This is the function which is called when a message is to be delivered. It | |
5481 | is passed the id of the message. It is possible that the message no longer | |
5482 | exists, if some other process has delivered it, and it is also possible that | |
5483 | the message is being worked on by another process, in which case the data file | |
5484 | will be locked. | |
5485 | ||
5486 | If no delivery is attempted for any of the above reasons, the function returns | |
5487 | DELIVER_NOT_ATTEMPTED. | |
5488 | ||
5489 | If the give_up flag is set true, do not attempt any deliveries, but instead | |
5490 | fail all outstanding addresses and return the message to the sender (or | |
5491 | whoever). | |
5492 | ||
5493 | A delivery operation has a process all to itself; we never deliver more than | |
5494 | one message in the same process. Therefore we needn't worry too much about | |
5495 | store leakage. | |
5496 | ||
92b0827a JH |
5497 | Liable to be called as root. |
5498 | ||
059ec3d9 PH |
5499 | Arguments: |
5500 | id the id of the message to be delivered | |
5501 | forced TRUE if delivery was forced by an administrator; this overrides | |
5502 | retry delays and causes a delivery to be tried regardless | |
5503 | give_up TRUE if an administrator has requested that delivery attempts | |
5504 | be abandoned | |
5505 | ||
5506 | Returns: When the global variable mua_wrapper is FALSE: | |
5507 | DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made | |
5508 | DELIVER_NOT_ATTEMPTED otherwise (see comment above) | |
5509 | When the global variable mua_wrapper is TRUE: | |
5510 | DELIVER_MUA_SUCCEEDED if delivery succeeded | |
5511 | DELIVER_MUA_FAILED if delivery failed | |
5512 | DELIVER_NOT_ATTEMPTED if not attempted (should not occur) | |
5513 | */ | |
5514 | ||
5515 | int | |
5516 | deliver_message(uschar *id, BOOL forced, BOOL give_up) | |
5517 | { | |
5518 | int i, rc; | |
5519 | int final_yield = DELIVER_ATTEMPTED_NORMAL; | |
5520 | time_t now = time(NULL); | |
5521 | address_item *addr_last = NULL; | |
5522 | uschar *filter_message = NULL; | |
059ec3d9 PH |
5523 | int process_recipients = RECIP_ACCEPT; |
5524 | open_db dbblock; | |
5525 | open_db *dbm_file; | |
faa05a93 | 5526 | extern int acl_where; |
9f01e50d | 5527 | uschar *info; |
059ec3d9 | 5528 | |
9f01e50d JH |
5529 | #ifdef MEASURE_TIMING |
5530 | report_time_since(×tamp_startup, US"delivery start"); /* testcase 0022, 2100 */ | |
5531 | #endif | |
5532 | ||
5533 | info = queue_run_pid == (pid_t)0 | |
d6c82d7b JH |
5534 | ? string_sprintf("delivering %s", id) |
5535 | : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid); | |
059ec3d9 PH |
5536 | |
5537 | /* If the D_process_info bit is on, set_process_info() will output debugging | |
5538 | information. If not, we want to show this initial information if D_deliver or | |
5539 | D_queue_run is set or in verbose mode. */ | |
5540 | ||
5541 | set_process_info("%s", info); | |
5542 | ||
d6c82d7b JH |
5543 | if ( !(debug_selector & D_process_info) |
5544 | && (debug_selector & (D_deliver|D_queue_run|D_v)) | |
5545 | ) | |
059ec3d9 PH |
5546 | debug_printf("%s\n", info); |
5547 | ||
5548 | /* Ensure that we catch any subprocesses that are created. Although Exim | |
5549 | sets SIG_DFL as its initial default, some routes through the code end up | |
5550 | here with it set to SIG_IGN - cases where a non-synchronous delivery process | |
5551 | has been forked, but no re-exec has been done. We use sigaction rather than | |
5552 | plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be | |
5553 | sure it is turned off. (There was a problem on AIX with this.) */ | |
5554 | ||
5555 | #ifdef SA_NOCLDWAIT | |
5556 | { | |
5557 | struct sigaction act; | |
5558 | act.sa_handler = SIG_DFL; | |
5559 | sigemptyset(&(act.sa_mask)); | |
5560 | act.sa_flags = 0; | |
5561 | sigaction(SIGCHLD, &act, NULL); | |
5562 | } | |
5563 | #else | |
5564 | signal(SIGCHLD, SIG_DFL); | |
5565 | #endif | |
5566 | ||
5567 | /* Make the forcing flag available for routers and transports, set up the | |
5568 | global message id field, and initialize the count for returned files and the | |
5569 | message size. This use of strcpy() is OK because the length id is checked when | |
5570 | it is obtained from a command line (the -M or -q options), and otherwise it is | |
5571 | known to be a valid message id. */ | |
5572 | ||
e30f4f43 JH |
5573 | if (id != message_id) |
5574 | Ustrcpy(message_id, id); | |
8768d548 | 5575 | f.deliver_force = forced; |
059ec3d9 PH |
5576 | return_count = 0; |
5577 | message_size = 0; | |
5578 | ||
5579 | /* Initialize some flags */ | |
5580 | ||
5581 | update_spool = FALSE; | |
5582 | remove_journal = TRUE; | |
5583 | ||
faa05a93 JH |
5584 | /* Set a known context for any ACLs we call via expansions */ |
5585 | acl_where = ACL_WHERE_DELIVERY; | |
5586 | ||
059ec3d9 PH |
5587 | /* Reset the random number generator, so that if several delivery processes are |
5588 | started from a queue runner that has already used random numbers (for sorting), | |
5589 | they don't all get the same sequence. */ | |
5590 | ||
5591 | random_seed = 0; | |
5592 | ||
5593 | /* Open and lock the message's data file. Exim locks on this one because the | |
5594 | header file may get replaced as it is re-written during the delivery process. | |
5595 | Any failures cause messages to be written to the log, except for missing files | |
5596 | while queue running - another process probably completed delivery. As part of | |
5597 | opening the data file, message_subdir gets set. */ | |
5598 | ||
789f8a4f | 5599 | if ((deliver_datafile = spool_open_datafile(id)) < 0) |
059ec3d9 PH |
5600 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5601 | ||
5602 | /* The value of message_size at this point has been set to the data length, | |
5603 | plus one for the blank line that notionally precedes the data. */ | |
5604 | ||
5605 | /* Now read the contents of the header file, which will set up the headers in | |
5606 | store, and also the list of recipients and the tree of non-recipients and | |
5607 | assorted flags. It updates message_size. If there is a reading or format error, | |
5608 | give up; if the message has been around for sufficiently long, remove it. */ | |
5609 | ||
059ec3d9 | 5610 | { |
41313d92 JH |
5611 | uschar * spoolname = string_sprintf("%s-H", id); |
5612 | if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK) | |
059ec3d9 | 5613 | { |
41313d92 JH |
5614 | if (errno == ERRNO_SPOOLFORMAT) |
5615 | { | |
5616 | struct stat statbuf; | |
5617 | if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""), | |
5618 | &statbuf) == 0) | |
5619 | log_write(0, LOG_MAIN, "Format error in spool file %s: " | |
5620 | "size=" OFF_T_FMT, spoolname, statbuf.st_size); | |
5621 | else | |
5622 | log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname); | |
5623 | } | |
5624 | else | |
5625 | log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname, | |
5626 | strerror(errno)); | |
059ec3d9 | 5627 | |
41313d92 JH |
5628 | /* If we managed to read the envelope data, received_time contains the |
5629 | time the message was received. Otherwise, we can calculate it from the | |
5630 | message id. */ | |
059ec3d9 | 5631 | |
41313d92 JH |
5632 | if (rc != spool_read_hdrerror) |
5633 | { | |
32dfdf8b JH |
5634 | received_time.tv_sec = received_time.tv_usec = 0; |
5635 | /*XXX subsec precision?*/ | |
41313d92 | 5636 | for (i = 0; i < 6; i++) |
32dfdf8b | 5637 | received_time.tv_sec = received_time.tv_sec * BASE_62 + tab62[id[i] - '0']; |
41313d92 | 5638 | } |
059ec3d9 | 5639 | |
41313d92 | 5640 | /* If we've had this malformed message too long, sling it. */ |
059ec3d9 | 5641 | |
32dfdf8b | 5642 | if (now - received_time.tv_sec > keep_malformed) |
41313d92 JH |
5643 | { |
5644 | Uunlink(spool_fname(US"msglog", message_subdir, id, US"")); | |
5645 | Uunlink(spool_fname(US"input", message_subdir, id, US"-D")); | |
5646 | Uunlink(spool_fname(US"input", message_subdir, id, US"-H")); | |
5647 | Uunlink(spool_fname(US"input", message_subdir, id, US"-J")); | |
5648 | log_write(0, LOG_MAIN, "Message removed because older than %s", | |
5649 | readconf_printtime(keep_malformed)); | |
5650 | } | |
059ec3d9 | 5651 | |
41313d92 JH |
5652 | (void)close(deliver_datafile); |
5653 | deliver_datafile = -1; | |
5654 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5655 | } | |
059ec3d9 PH |
5656 | } |
5657 | ||
5658 | /* The spool header file has been read. Look to see if there is an existing | |
5659 | journal file for this message. If there is, it means that a previous delivery | |
5660 | attempt crashed (program or host) before it could update the spool header file. | |
5661 | Read the list of delivered addresses from the journal and add them to the | |
5662 | nonrecipients tree. Then update the spool file. We can leave the journal in | |
5663 | existence, as it will get further successful deliveries added to it in this | |
5664 | run, and it will be deleted if this function gets to its end successfully. | |
5665 | Otherwise it might be needed again. */ | |
5666 | ||
059ec3d9 | 5667 | { |
41313d92 | 5668 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
92b0827a | 5669 | FILE * jread; |
41313d92 | 5670 | |
92b0827a JH |
5671 | if ( (journal_fd = Uopen(fname, O_RDWR|O_APPEND |
5672 | #ifdef O_CLOEXEC | |
5673 | | O_CLOEXEC | |
5674 | #endif | |
5675 | #ifdef O_NOFOLLOW | |
5676 | | O_NOFOLLOW | |
5677 | #endif | |
5678 | , SPOOL_MODE)) >= 0 | |
5679 | && lseek(journal_fd, 0, SEEK_SET) == 0 | |
5680 | && (jread = fdopen(journal_fd, "rb")) | |
5681 | ) | |
059ec3d9 | 5682 | { |
41313d92 JH |
5683 | while (Ufgets(big_buffer, big_buffer_size, jread)) |
5684 | { | |
5685 | int n = Ustrlen(big_buffer); | |
5686 | big_buffer[n-1] = 0; | |
5687 | tree_add_nonrecipient(big_buffer); | |
5688 | DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from " | |
5689 | "journal file\n", big_buffer); | |
5690 | } | |
92b0827a | 5691 | rewind(jread); |
c0741086 JH |
5692 | if ((journal_fd = dup(fileno(jread))) < 0) |
5693 | journal_fd = fileno(jread); | |
5694 | else | |
5695 | (void) fclose(jread); /* Try to not leak the FILE resource */ | |
5696 | ||
41313d92 JH |
5697 | /* Panic-dies on error */ |
5698 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
5699 | } | |
5700 | else if (errno != ENOENT) | |
5701 | { | |
5702 | log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: " | |
5703 | "%s", strerror(errno)); | |
5704 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
059ec3d9 | 5705 | } |
059ec3d9 | 5706 | |
41313d92 | 5707 | /* A null recipients list indicates some kind of disaster. */ |
059ec3d9 | 5708 | |
41313d92 JH |
5709 | if (!recipients_list) |
5710 | { | |
5711 | (void)close(deliver_datafile); | |
5712 | deliver_datafile = -1; | |
5713 | log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname); | |
5714 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5715 | } | |
059ec3d9 PH |
5716 | } |
5717 | ||
5718 | ||
5719 | /* Handle a message that is frozen. There are a number of different things that | |
5720 | can happen, but in the default situation, unless forced, no delivery is | |
5721 | attempted. */ | |
5722 | ||
8768d548 | 5723 | if (f.deliver_freeze) |
059ec3d9 | 5724 | { |
a7538db1 | 5725 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
059ec3d9 PH |
5726 | /* Moving to another directory removes the message from Exim's view. Other |
5727 | tools must be used to deal with it. Logging of this action happens in | |
5728 | spool_move_message() and its subfunctions. */ | |
5729 | ||
d6c82d7b JH |
5730 | if ( move_frozen_messages |
5731 | && spool_move_message(id, message_subdir, US"", US"F") | |
5732 | ) | |
059ec3d9 | 5733 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
a7538db1 | 5734 | #endif |
059ec3d9 PH |
5735 | |
5736 | /* For all frozen messages (bounces or not), timeout_frozen_after sets the | |
5737 | maximum time to keep messages that are frozen. Thaw if we reach it, with a | |
5738 | flag causing all recipients to be failed. The time is the age of the | |
5739 | message, not the time since freezing. */ | |
5740 | ||
5741 | if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after) | |
5742 | { | |
5743 | log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after"); | |
5744 | process_recipients = RECIP_FAIL_TIMEOUT; | |
5745 | } | |
5746 | ||
5747 | /* For bounce messages (and others with no sender), thaw if the error message | |
5748 | ignore timer is exceeded. The message will be discarded if this delivery | |
5749 | fails. */ | |
5750 | ||
10c50704 | 5751 | else if (!*sender_address && message_age >= ignore_bounce_errors_after) |
059ec3d9 | 5752 | log_write(0, LOG_MAIN, "Unfrozen by errmsg timer"); |
059ec3d9 | 5753 | |
ef213c3b PH |
5754 | /* If this is a bounce message, or there's no auto thaw, or we haven't |
5755 | reached the auto thaw time yet, and this delivery is not forced by an admin | |
5756 | user, do not attempt delivery of this message. Note that forced is set for | |
5757 | continuing messages down the same channel, in order to skip load checking and | |
5758 | ignore hold domains, but we don't want unfreezing in that case. */ | |
059ec3d9 PH |
5759 | |
5760 | else | |
5761 | { | |
d6c82d7b JH |
5762 | if ( ( sender_address[0] == 0 |
5763 | || auto_thaw <= 0 | |
5764 | || now <= deliver_frozen_at + auto_thaw | |
5765 | ) | |
8768d548 JH |
5766 | && ( !forced || !f.deliver_force_thaw |
5767 | || !f.admin_user || continue_hostname | |
d6c82d7b | 5768 | ) ) |
059ec3d9 | 5769 | { |
f1e894f3 | 5770 | (void)close(deliver_datafile); |
059ec3d9 PH |
5771 | deliver_datafile = -1; |
5772 | log_write(L_skip_delivery, LOG_MAIN, "Message is frozen"); | |
5773 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5774 | } | |
5775 | ||
5776 | /* If delivery was forced (by an admin user), assume a manual thaw. | |
5777 | Otherwise it's an auto thaw. */ | |
5778 | ||
5779 | if (forced) | |
5780 | { | |
8768d548 | 5781 | f.deliver_manual_thaw = TRUE; |
059ec3d9 PH |
5782 | log_write(0, LOG_MAIN, "Unfrozen by forced delivery"); |
5783 | } | |
5784 | else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw"); | |
5785 | } | |
5786 | ||
5787 | /* We get here if any of the rules for unfreezing have triggered. */ | |
5788 | ||
8768d548 | 5789 | f.deliver_freeze = FALSE; |
059ec3d9 PH |
5790 | update_spool = TRUE; |
5791 | } | |
5792 | ||
5793 | ||
5794 | /* Open the message log file if we are using them. This records details of | |
5795 | deliveries, deferments, and failures for the benefit of the mail administrator. | |
5796 | The log is not used by exim itself to track the progress of a message; that is | |
5797 | done by rewriting the header spool file. */ | |
5798 | ||
5799 | if (message_logs) | |
5800 | { | |
41313d92 JH |
5801 | uschar * fname = spool_fname(US"msglog", message_subdir, id, US""); |
5802 | uschar * error; | |
059ec3d9 PH |
5803 | int fd; |
5804 | ||
41313d92 | 5805 | if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0) |
059ec3d9 PH |
5806 | { |
5807 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error, | |
41313d92 | 5808 | fname, strerror(errno)); |
059ec3d9 PH |
5809 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5810 | } | |
5811 | ||
5812 | /* Make a C stream out of it. */ | |
5813 | ||
d6c82d7b | 5814 | if (!(message_log = fdopen(fd, "a"))) |
059ec3d9 PH |
5815 | { |
5816 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s", | |
41313d92 | 5817 | fname, strerror(errno)); |
059ec3d9 PH |
5818 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ |
5819 | } | |
5820 | } | |
5821 | ||
5822 | ||
5823 | /* If asked to give up on a message, log who did it, and set the action for all | |
5824 | the addresses. */ | |
5825 | ||
5826 | if (give_up) | |
5827 | { | |
5828 | struct passwd *pw = getpwuid(real_uid); | |
d6c82d7b JH |
5829 | log_write(0, LOG_MAIN, "cancelled by %s", |
5830 | pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid)); | |
059ec3d9 PH |
5831 | process_recipients = RECIP_FAIL; |
5832 | } | |
5833 | ||
5834 | /* Otherwise, if there are too many Received: headers, fail all recipients. */ | |
5835 | ||
5836 | else if (received_count > received_headers_max) | |
5837 | process_recipients = RECIP_FAIL_LOOP; | |
5838 | ||
5839 | /* Otherwise, if a system-wide, address-independent message filter is | |
5840 | specified, run it now, except in the case when we are failing all recipients as | |
5841 | a result of timeout_frozen_after. If the system filter yields "delivered", then | |
5842 | ignore the true recipients of the message. Failure of the filter file is | |
5843 | logged, and the delivery attempt fails. */ | |
5844 | ||
d6c82d7b | 5845 | else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT) |
059ec3d9 PH |
5846 | { |
5847 | int rc; | |
5848 | int filtertype; | |
5849 | ugid_block ugid; | |
5850 | redirect_block redirect; | |
5851 | ||
5852 | if (system_filter_uid_set) | |
5853 | { | |
5854 | ugid.uid = system_filter_uid; | |
5855 | ugid.gid = system_filter_gid; | |
5856 | ugid.uid_set = ugid.gid_set = TRUE; | |
5857 | } | |
5858 | else | |
059ec3d9 | 5859 | ugid.uid_set = ugid.gid_set = FALSE; |
059ec3d9 PH |
5860 | |
5861 | return_path = sender_address; | |
8768d548 JH |
5862 | f.enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */ |
5863 | f.system_filtering = TRUE; | |
059ec3d9 PH |
5864 | |
5865 | /* Any error in the filter file causes a delivery to be abandoned. */ | |
5866 | ||
5867 | redirect.string = system_filter; | |
5868 | redirect.isfile = TRUE; | |
5869 | redirect.check_owner = redirect.check_group = FALSE; | |
5870 | redirect.owners = NULL; | |
5871 | redirect.owngroups = NULL; | |
5872 | redirect.pw = NULL; | |
5873 | redirect.modemask = 0; | |
5874 | ||
5875 | DEBUG(D_deliver|D_filter) debug_printf("running system filter\n"); | |
5876 | ||
5877 | rc = rda_interpret( | |
5878 | &redirect, /* Where the data is */ | |
5879 | RDO_DEFER | /* Turn on all the enabling options */ | |
5880 | RDO_FAIL | /* Leave off all the disabling options */ | |
5881 | RDO_FILTER | | |
5882 | RDO_FREEZE | | |
5883 | RDO_REALLOG | | |
5884 | RDO_REWRITE, | |
5885 | NULL, /* No :include: restriction (not used in filter) */ | |
5886 | NULL, /* No sieve vacation directory (not sieve!) */ | |
efd9a422 | 5887 | NULL, /* No sieve enotify mailto owner (not sieve!) */ |
e4a89c47 PH |
5888 | NULL, /* No sieve user address (not sieve!) */ |
5889 | NULL, /* No sieve subaddress (not sieve!) */ | |
059ec3d9 PH |
5890 | &ugid, /* uid/gid data */ |
5891 | &addr_new, /* Where to hang generated addresses */ | |
5892 | &filter_message, /* Where to put error message */ | |
5893 | NULL, /* Don't skip syntax errors */ | |
5894 | &filtertype, /* Will always be set to FILTER_EXIM for this call */ | |
5895 | US"system filter"); /* For error messages */ | |
5896 | ||
5897 | DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc); | |
5898 | ||
5899 | if (rc == FF_ERROR || rc == FF_NONEXIST) | |
5900 | { | |
f1e894f3 | 5901 | (void)close(deliver_datafile); |
059ec3d9 PH |
5902 | deliver_datafile = -1; |
5903 | log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s", | |
5904 | string_printing(filter_message)); | |
5905 | return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */ | |
5906 | } | |
5907 | ||
5908 | /* Reset things. If the filter message is an empty string, which can happen | |
5909 | for a filter "fail" or "freeze" command with no text, reset it to NULL. */ | |
5910 | ||
8768d548 JH |
5911 | f.system_filtering = FALSE; |
5912 | f.enable_dollar_recipients = FALSE; | |
d6c82d7b | 5913 | if (filter_message && filter_message[0] == 0) filter_message = NULL; |
059ec3d9 PH |
5914 | |
5915 | /* Save the values of the system filter variables so that user filters | |
5916 | can use them. */ | |
5917 | ||
5918 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); | |
5919 | ||
5920 | /* The filter can request that delivery of the original addresses be | |
5921 | deferred. */ | |
5922 | ||
5923 | if (rc == FF_DEFER) | |
5924 | { | |
5925 | process_recipients = RECIP_DEFER; | |
5926 | deliver_msglog("Delivery deferred by system filter\n"); | |
5927 | log_write(0, LOG_MAIN, "Delivery deferred by system filter"); | |
5928 | } | |
5929 | ||
5930 | /* The filter can request that a message be frozen, but this does not | |
5931 | take place if the message has been manually thawed. In that case, we must | |
5932 | unset "delivered", which is forced by the "freeze" command to make -bF | |
5933 | work properly. */ | |
5934 | ||
8768d548 | 5935 | else if (rc == FF_FREEZE && !f.deliver_manual_thaw) |
059ec3d9 | 5936 | { |
8768d548 | 5937 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
5938 | deliver_frozen_at = time(NULL); |
5939 | process_recipients = RECIP_DEFER; | |
5940 | frozen_info = string_sprintf(" by the system filter%s%s", | |
d6c82d7b JH |
5941 | filter_message ? US": " : US"", |
5942 | filter_message ? filter_message : US""); | |
059ec3d9 PH |
5943 | } |
5944 | ||
5945 | /* The filter can request that a message be failed. The error message may be | |
5946 | quite long - it is sent back to the sender in the bounce - but we don't want | |
5947 | to fill up the log with repetitions of it. If it starts with << then the text | |
5948 | between << and >> is written to the log, with the rest left for the bounce | |
5949 | message. */ | |
5950 | ||
5951 | else if (rc == FF_FAIL) | |
5952 | { | |
5953 | uschar *colon = US""; | |
5954 | uschar *logmsg = US""; | |
5955 | int loglen = 0; | |
5956 | ||
5957 | process_recipients = RECIP_FAIL_FILTER; | |
5958 | ||
d6c82d7b | 5959 | if (filter_message) |
059ec3d9 PH |
5960 | { |
5961 | uschar *logend; | |
5962 | colon = US": "; | |
d6c82d7b JH |
5963 | if ( filter_message[0] == '<' |
5964 | && filter_message[1] == '<' | |
5965 | && (logend = Ustrstr(filter_message, ">>")) | |
5966 | ) | |
059ec3d9 PH |
5967 | { |
5968 | logmsg = filter_message + 2; | |
5969 | loglen = logend - logmsg; | |
5970 | filter_message = logend + 2; | |
5971 | if (filter_message[0] == 0) filter_message = NULL; | |
5972 | } | |
5973 | else | |
5974 | { | |
5975 | logmsg = filter_message; | |
5976 | loglen = Ustrlen(filter_message); | |
5977 | } | |
5978 | } | |
5979 | ||
5980 | log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen, | |
5981 | logmsg); | |
5982 | } | |
5983 | ||
5984 | /* Delivery can be restricted only to those recipients (if any) that the | |
5985 | filter specified. */ | |
5986 | ||
5987 | else if (rc == FF_DELIVERED) | |
5988 | { | |
5989 | process_recipients = RECIP_IGNORE; | |
d6c82d7b | 5990 | if (addr_new) |
059ec3d9 | 5991 | log_write(0, LOG_MAIN, "original recipients ignored (system filter)"); |
d6c82d7b JH |
5992 | else |
5993 | log_write(0, LOG_MAIN, "=> discarded (system filter)"); | |
059ec3d9 PH |
5994 | } |
5995 | ||
5996 | /* If any new addresses were created by the filter, fake up a "parent" | |
5997 | for them. This is necessary for pipes, etc., which are expected to have | |
5998 | parents, and it also gives some sensible logging for others. Allow | |
5999 | pipes, files, and autoreplies, and run them as the filter uid if set, | |
6000 | otherwise as the current uid. */ | |
6001 | ||
d6c82d7b | 6002 | if (addr_new) |
059ec3d9 | 6003 | { |
f3ebb786 JH |
6004 | int uid = system_filter_uid_set ? system_filter_uid : geteuid(); |
6005 | int gid = system_filter_gid_set ? system_filter_gid : getegid(); | |
059ec3d9 PH |
6006 | |
6007 | /* The text "system-filter" is tested in transport_set_up_command() and in | |
6008 | set_up_shell_command() in the pipe transport, to enable them to permit | |
6009 | $recipients, so don't change it here without also changing it there. */ | |
6010 | ||
6011 | address_item *p = addr_new; | |
6012 | address_item *parent = deliver_make_addr(US"system-filter", FALSE); | |
6013 | ||
6014 | parent->domain = string_copylc(qualify_domain_recipient); | |
6015 | parent->local_part = US"system-filter"; | |
6016 | ||
6017 | /* As part of this loop, we arrange for addr_last to end up pointing | |
6018 | at the final address. This is used if we go on to add addresses for the | |
6019 | original recipients. */ | |
6020 | ||
d6c82d7b | 6021 | while (p) |
059ec3d9 | 6022 | { |
82f90600 | 6023 | if (parent->child_count == USHRT_MAX) |
4362ff0d | 6024 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more " |
82f90600 | 6025 | "than %d delivery addresses", USHRT_MAX); |
059ec3d9 PH |
6026 | parent->child_count++; |
6027 | p->parent = parent; | |
6028 | ||
6029 | if (testflag(p, af_pfr)) | |
6030 | { | |
6031 | uschar *tpname; | |
6032 | uschar *type; | |
6033 | p->uid = uid; | |
6034 | p->gid = gid; | |
7eb0e5d2 JH |
6035 | setflag(p, af_uid_set); |
6036 | setflag(p, af_gid_set); | |
6037 | setflag(p, af_allow_file); | |
6038 | setflag(p, af_allow_pipe); | |
6039 | setflag(p, af_allow_reply); | |
059ec3d9 PH |
6040 | |
6041 | /* Find the name of the system filter's appropriate pfr transport */ | |
6042 | ||
6043 | if (p->address[0] == '|') | |
6044 | { | |
6045 | type = US"pipe"; | |
6046 | tpname = system_filter_pipe_transport; | |
6047 | address_pipe = p->address; | |
6048 | } | |
6049 | else if (p->address[0] == '>') | |
6050 | { | |
6051 | type = US"reply"; | |
6052 | tpname = system_filter_reply_transport; | |
6053 | } | |
6054 | else | |
6055 | { | |
6056 | if (p->address[Ustrlen(p->address)-1] == '/') | |
6057 | { | |
6058 | type = US"directory"; | |
6059 | tpname = system_filter_directory_transport; | |
6060 | } | |
6061 | else | |
6062 | { | |
6063 | type = US"file"; | |
6064 | tpname = system_filter_file_transport; | |
6065 | } | |
6066 | address_file = p->address; | |
6067 | } | |
6068 | ||
6069 | /* Now find the actual transport, first expanding the name. We have | |
6070 | set address_file or address_pipe above. */ | |
6071 | ||
d6c82d7b | 6072 | if (tpname) |
059ec3d9 PH |
6073 | { |
6074 | uschar *tmp = expand_string(tpname); | |
6075 | address_file = address_pipe = NULL; | |
d6c82d7b | 6076 | if (!tmp) |
059ec3d9 PH |
6077 | p->message = string_sprintf("failed to expand \"%s\" as a " |
6078 | "system filter transport name", tpname); | |
f3ebb786 JH |
6079 | if (is_tainted(tmp)) |
6080 | p->message = string_sprintf("attempt to used tainted value '%s' for" | |
6081 | "transport '%s' as a system filter", tmp, tpname); | |
059ec3d9 PH |
6082 | tpname = tmp; |
6083 | } | |
6084 | else | |
059ec3d9 PH |
6085 | p->message = string_sprintf("system_filter_%s_transport is unset", |
6086 | type); | |
059ec3d9 | 6087 | |
d6c82d7b | 6088 | if (tpname) |
059ec3d9 PH |
6089 | { |
6090 | transport_instance *tp; | |
d6c82d7b | 6091 | for (tp = transports; tp; tp = tp->next) |
059ec3d9 PH |
6092 | if (Ustrcmp(tp->name, tpname) == 0) |
6093 | { | |
6094 | p->transport = tp; | |
6095 | break; | |
6096 | } | |
d6c82d7b | 6097 | if (!tp) |
059ec3d9 PH |
6098 | p->message = string_sprintf("failed to find \"%s\" transport " |
6099 | "for system filter delivery", tpname); | |
6100 | } | |
6101 | ||
6102 | /* If we couldn't set up a transport, defer the delivery, putting the | |
6103 | error on the panic log as well as the main log. */ | |
6104 | ||
d6c82d7b | 6105 | if (!p->transport) |
059ec3d9 PH |
6106 | { |
6107 | address_item *badp = p; | |
6108 | p = p->next; | |
d6c82d7b | 6109 | if (!addr_last) addr_new = p; else addr_last->next = p; |
059ec3d9 | 6110 | badp->local_part = badp->address; /* Needed for log line */ |
ba936fb8 | 6111 | post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6112 | continue; |
6113 | } | |
6114 | } /* End of pfr handling */ | |
6115 | ||
6116 | /* Either a non-pfr delivery, or we found a transport */ | |
6117 | ||
6118 | DEBUG(D_deliver|D_filter) | |
6119 | debug_printf("system filter added %s\n", p->address); | |
6120 | ||
6121 | addr_last = p; | |
6122 | p = p->next; | |
6123 | } /* Loop through all addr_new addresses */ | |
6124 | } | |
6125 | } | |
6126 | ||
6127 | ||
6128 | /* Scan the recipients list, and for every one that is not in the non- | |
6129 | recipients tree, add an addr item to the chain of new addresses. If the pno | |
6130 | value is non-negative, we must set the onetime parent from it. This which | |
6131 | points to the relevant entry in the recipients list. | |
6132 | ||
6133 | This processing can be altered by the setting of the process_recipients | |
6134 | variable, which is changed if recipients are to be ignored, failed, or | |
6135 | deferred. This can happen as a result of system filter activity, or if the -Mg | |
6136 | option is used to fail all of them. | |
6137 | ||
6138 | Duplicate addresses are handled later by a different tree structure; we can't | |
6139 | just extend the non-recipients tree, because that will be re-written to the | |
6140 | spool if the message is deferred, and in any case there are casing | |
6141 | complications for local addresses. */ | |
6142 | ||
6143 | if (process_recipients != RECIP_IGNORE) | |
059ec3d9 | 6144 | for (i = 0; i < recipients_count; i++) |
d6c82d7b | 6145 | if (!tree_search(tree_nonrecipients, recipients_list[i].address)) |
059ec3d9 PH |
6146 | { |
6147 | recipient_item *r = recipients_list + i; | |
6148 | address_item *new = deliver_make_addr(r->address, FALSE); | |
d43cbe25 | 6149 | new->prop.errors_address = r->errors_to; |
8c5d388a | 6150 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
6151 | if ((new->prop.utf8_msg = message_smtputf8)) |
6152 | { | |
6153 | new->prop.utf8_downcvt = message_utf8_downconvert == 1; | |
6154 | new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1; | |
0ec7e948 JH |
6155 | DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n", |
6156 | new->prop.utf8_downcvt ? "yes" | |
6157 | : new->prop.utf8_downcvt_maybe ? "ifneeded" | |
6158 | : "no"); | |
3c8b3577 | 6159 | } |
7ade712c | 6160 | #endif |
059ec3d9 PH |
6161 | |
6162 | if (r->pno >= 0) | |
6163 | new->onetime_parent = recipients_list[r->pno].address; | |
6164 | ||
94431adb | 6165 | /* If DSN support is enabled, set the dsn flags and the original receipt |
6c1c3d1d WB |
6166 | to be passed on to other DSN enabled MTAs */ |
6167 | new->dsn_flags = r->dsn_flags & rf_dsnflags; | |
6168 | new->dsn_orcpt = r->orcpt; | |
df98a6ff | 6169 | DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: 0x%x\n", |
d011368a | 6170 | new->dsn_orcpt ? new->dsn_orcpt : US"", new->dsn_flags); |
6c1c3d1d | 6171 | |
059ec3d9 PH |
6172 | switch (process_recipients) |
6173 | { | |
6174 | /* RECIP_DEFER is set when a system filter freezes a message. */ | |
6175 | ||
6176 | case RECIP_DEFER: | |
1afce5bb MK |
6177 | new->next = addr_defer; |
6178 | addr_defer = new; | |
6179 | break; | |
059ec3d9 PH |
6180 | |
6181 | ||
6182 | /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail" | |
6183 | command. */ | |
6184 | ||
6185 | case RECIP_FAIL_FILTER: | |
1afce5bb MK |
6186 | new->message = |
6187 | filter_message ? filter_message : US"delivery cancelled"; | |
6188 | setflag(new, af_pass_message); | |
6189 | goto RECIP_QUEUE_FAILED; /* below */ | |
059ec3d9 PH |
6190 | |
6191 | ||
6192 | /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older | |
6193 | than the value in timeout_frozen_after. Treat non-bounce messages | |
6194 | similarly to -Mg; for bounce messages we just want to discard, so | |
6195 | don't put the address on the failed list. The timeout has already | |
6196 | been logged. */ | |
6197 | ||
6198 | case RECIP_FAIL_TIMEOUT: | |
1afce5bb MK |
6199 | new->message = US"delivery cancelled; message timed out"; |
6200 | goto RECIP_QUEUE_FAILED; /* below */ | |
059ec3d9 PH |
6201 | |
6202 | ||
6203 | /* RECIP_FAIL is set when -Mg has been used. */ | |
6204 | ||
6205 | case RECIP_FAIL: | |
1afce5bb MK |
6206 | new->message = US"delivery cancelled by administrator"; |
6207 | /* Fall through */ | |
059ec3d9 PH |
6208 | |
6209 | /* Common code for the failure cases above. If this is not a bounce | |
6210 | message, put the address on the failed list so that it is used to | |
6211 | create a bounce. Otherwise do nothing - this just discards the address. | |
6212 | The incident has already been logged. */ | |
6213 | ||
6214 | RECIP_QUEUE_FAILED: | |
1afce5bb MK |
6215 | if (sender_address[0]) |
6216 | { | |
6217 | new->next = addr_failed; | |
6218 | addr_failed = new; | |
6219 | } | |
059ec3d9 PH |
6220 | break; |
6221 | ||
6222 | ||
6223 | /* RECIP_FAIL_LOOP is set when there are too many Received: headers | |
6224 | in the message. Process each address as a routing failure; if this | |
6225 | is a bounce message, it will get frozen. */ | |
6226 | ||
6227 | case RECIP_FAIL_LOOP: | |
1afce5bb MK |
6228 | new->message = US"Too many \"Received\" headers - suspected mail loop"; |
6229 | post_process_one(new, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); | |
6230 | break; | |
059ec3d9 PH |
6231 | |
6232 | ||
6233 | /* Value should be RECIP_ACCEPT; take this as the safe default. */ | |
6234 | ||
6235 | default: | |
1afce5bb MK |
6236 | if (!addr_new) addr_new = new; else addr_last->next = new; |
6237 | addr_last = new; | |
6238 | break; | |
059ec3d9 | 6239 | } |
14a465c3 | 6240 | |
0cbf2b82 | 6241 | #ifndef DISABLE_EVENT |
7a9e0ae1 | 6242 | if (process_recipients != RECIP_ACCEPT && event_action) |
14a465c3 JH |
6243 | { |
6244 | uschar * save_local = deliver_localpart; | |
55414b25 | 6245 | const uschar * save_domain = deliver_domain; |
7ea1237c MK |
6246 | uschar * addr = new->address, * errmsg = NULL; |
6247 | int start, end, dom; | |
14a465c3 | 6248 | |
7ea1237c MK |
6249 | if (!parse_extract_address(addr, &errmsg, &start, &end, &dom, TRUE)) |
6250 | log_write(0, LOG_MAIN|LOG_PANIC, | |
6251 | "failed to parse address '%.100s': %s\n", addr, errmsg); | |
6252 | else | |
6253 | { | |
6254 | deliver_localpart = | |
6255 | string_copyn(addr+start, dom ? (dom-1) - start : end - start); | |
6256 | deliver_domain = dom ? CUS string_copyn(addr+dom, end - dom) : CUS""; | |
14a465c3 | 6257 | |
7ea1237c | 6258 | event_raise(event_action, US"msg:fail:internal", new->message); |
14a465c3 | 6259 | |
7ea1237c MK |
6260 | deliver_localpart = save_local; |
6261 | deliver_domain = save_domain; | |
6262 | } | |
14a465c3 JH |
6263 | } |
6264 | #endif | |
059ec3d9 | 6265 | } |
059ec3d9 PH |
6266 | |
6267 | DEBUG(D_deliver) | |
6268 | { | |
059ec3d9 | 6269 | debug_printf("Delivery address list:\n"); |
d7978c0f | 6270 | for (address_item * p = addr_new; p; p = p->next) |
d6c82d7b JH |
6271 | debug_printf(" %s %s\n", p->address, |
6272 | p->onetime_parent ? p->onetime_parent : US""); | |
059ec3d9 PH |
6273 | } |
6274 | ||
6275 | /* Set up the buffers used for copying over the file when delivering. */ | |
6276 | ||
6277 | deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE); | |
6278 | deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE); | |
6279 | ||
6280 | ||
6281 | ||
6282 | /* Until there are no more new addresses, handle each one as follows: | |
6283 | ||
6284 | . If this is a generated address (indicated by the presence of a parent | |
6285 | pointer) then check to see whether it is a pipe, file, or autoreply, and | |
6286 | if so, handle it directly here. The router that produced the address will | |
6287 | have set the allow flags into the address, and also set the uid/gid required. | |
6288 | Having the routers generate new addresses and then checking them here at | |
6289 | the outer level is tidier than making each router do the checking, and | |
6290 | means that routers don't need access to the failed address queue. | |
6291 | ||
6292 | . Break up the address into local part and domain, and make lowercased | |
6293 | versions of these strings. We also make unquoted versions of the local part. | |
6294 | ||
6295 | . Handle the percent hack for those domains for which it is valid. | |
6296 | ||
6297 | . For child addresses, determine if any of the parents have the same address. | |
6298 | If so, generate a different string for previous delivery checking. Without | |
6299 | this code, if the address spqr generates spqr via a forward or alias file, | |
6300 | delivery of the generated spqr stops further attempts at the top level spqr, | |
6301 | which is not what is wanted - it may have generated other addresses. | |
6302 | ||
6303 | . Check on the retry database to see if routing was previously deferred, but | |
6304 | only if in a queue run. Addresses that are to be routed are put on the | |
6305 | addr_route chain. Addresses that are to be deferred are put on the | |
6306 | addr_defer chain. We do all the checking first, so as not to keep the | |
6307 | retry database open any longer than necessary. | |
6308 | ||
6309 | . Now we run the addresses through the routers. A router may put the address | |
6310 | on either the addr_local or the addr_remote chain for local or remote | |
6311 | delivery, respectively, or put it on the addr_failed chain if it is | |
6312 | undeliveable, or it may generate child addresses and put them on the | |
6313 | addr_new chain, or it may defer an address. All the chain anchors are | |
6314 | passed as arguments so that the routers can be called for verification | |
6315 | purposes as well. | |
6316 | ||
6317 | . If new addresses have been generated by the routers, da capo. | |
6318 | */ | |
6319 | ||
8768d548 | 6320 | f.header_rewritten = FALSE; /* No headers rewritten yet */ |
d6c82d7b | 6321 | while (addr_new) /* Loop until all addresses dealt with */ |
059ec3d9 PH |
6322 | { |
6323 | address_item *addr, *parent; | |
059ec3d9 PH |
6324 | |
6325 | /* Failure to open the retry database is treated the same as if it does | |
6326 | not exist. In both cases, dbm_file is NULL. */ | |
6327 | ||
b10c87b3 | 6328 | if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE, TRUE))) |
059ec3d9 PH |
6329 | DEBUG(D_deliver|D_retry|D_route|D_hints_lookup) |
6330 | debug_printf("no retry data available\n"); | |
059ec3d9 PH |
6331 | |
6332 | /* Scan the current batch of new addresses, to handle pipes, files and | |
6333 | autoreplies, and determine which others are ready for routing. */ | |
6334 | ||
d6c82d7b | 6335 | while (addr_new) |
059ec3d9 PH |
6336 | { |
6337 | int rc; | |
6338 | uschar *p; | |
6339 | tree_node *tnode; | |
6340 | dbdata_retry *domain_retry_record; | |
6341 | dbdata_retry *address_retry_record; | |
6342 | ||
6343 | addr = addr_new; | |
6344 | addr_new = addr->next; | |
6345 | ||
6346 | DEBUG(D_deliver|D_retry|D_route) | |
6347 | { | |
6348 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); | |
6349 | debug_printf("Considering: %s\n", addr->address); | |
6350 | } | |
6351 | ||
6352 | /* Handle generated address that is a pipe or a file or an autoreply. */ | |
6353 | ||
6354 | if (testflag(addr, af_pfr)) | |
6355 | { | |
424a1c63 PH |
6356 | /* If an autoreply in a filter could not generate a syntactically valid |
6357 | address, give up forthwith. Set af_ignore_error so that we don't try to | |
6358 | generate a bounce. */ | |
6359 | ||
6360 | if (testflag(addr, af_bad_reply)) | |
6361 | { | |
6362 | addr->basic_errno = ERRNO_BADADDRESS2; | |
6363 | addr->local_part = addr->address; | |
6364 | addr->message = | |
6365 | US"filter autoreply generated syntactically invalid recipient"; | |
7eb0e5d2 | 6366 | addr->prop.ignore_error = TRUE; |
ba936fb8 | 6367 | (void) post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
424a1c63 PH |
6368 | continue; /* with the next new address */ |
6369 | } | |
059ec3d9 PH |
6370 | |
6371 | /* If two different users specify delivery to the same pipe or file or | |
6372 | autoreply, there should be two different deliveries, so build a unique | |
6373 | string that incorporates the original address, and use this for | |
6374 | duplicate testing and recording delivery, and also for retrying. */ | |
6375 | ||
6376 | addr->unique = | |
424a1c63 PH |
6377 | string_sprintf("%s:%s", addr->address, addr->parent->unique + |
6378 | (testflag(addr->parent, af_homonym)? 3:0)); | |
059ec3d9 PH |
6379 | |
6380 | addr->address_retry_key = addr->domain_retry_key = | |
6381 | string_sprintf("T:%s", addr->unique); | |
6382 | ||
6383 | /* If a filter file specifies two deliveries to the same pipe or file, | |
6384 | we want to de-duplicate, but this is probably not wanted for two mail | |
6385 | commands to the same address, where probably both should be delivered. | |
6386 | So, we have to invent a different unique string in that case. Just | |
6387 | keep piling '>' characters on the front. */ | |
6388 | ||
6389 | if (addr->address[0] == '>') | |
d6c82d7b | 6390 | while (tree_search(tree_duplicates, addr->unique)) |
059ec3d9 | 6391 | addr->unique = string_sprintf(">%s", addr->unique); |
059ec3d9 | 6392 | |
d6c82d7b | 6393 | else if ((tnode = tree_search(tree_duplicates, addr->unique))) |
059ec3d9 PH |
6394 | { |
6395 | DEBUG(D_deliver|D_route) | |
6396 | debug_printf("%s is a duplicate address: discarded\n", addr->address); | |
6397 | addr->dupof = tnode->data.ptr; | |
6398 | addr->next = addr_duplicate; | |
6399 | addr_duplicate = addr; | |
6400 | continue; | |
6401 | } | |
6402 | ||
6403 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6404 | ||
6405 | /* Check for previous delivery */ | |
6406 | ||
d6c82d7b | 6407 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6408 | { |
6409 | DEBUG(D_deliver|D_route) | |
6410 | debug_printf("%s was previously delivered: discarded\n", addr->address); | |
6411 | child_done(addr, tod_stamp(tod_log)); | |
6412 | continue; | |
6413 | } | |
6414 | ||
6415 | /* Save for checking future duplicates */ | |
6416 | ||
6417 | tree_add_duplicate(addr->unique, addr); | |
6418 | ||
6419 | /* Set local part and domain */ | |
6420 | ||
6421 | addr->local_part = addr->address; | |
6422 | addr->domain = addr->parent->domain; | |
6423 | ||
6424 | /* Ensure that the delivery is permitted. */ | |
6425 | ||
6426 | if (testflag(addr, af_file)) | |
6427 | { | |
6428 | if (!testflag(addr, af_allow_file)) | |
6429 | { | |
6430 | addr->basic_errno = ERRNO_FORBIDFILE; | |
6431 | addr->message = US"delivery to file forbidden"; | |
ba936fb8 | 6432 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6433 | continue; /* with the next new address */ |
6434 | } | |
6435 | } | |
6436 | else if (addr->address[0] == '|') | |
6437 | { | |
6438 | if (!testflag(addr, af_allow_pipe)) | |
6439 | { | |
6440 | addr->basic_errno = ERRNO_FORBIDPIPE; | |
6441 | addr->message = US"delivery to pipe forbidden"; | |
ba936fb8 | 6442 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6443 | continue; /* with the next new address */ |
6444 | } | |
6445 | } | |
6446 | else if (!testflag(addr, af_allow_reply)) | |
6447 | { | |
6448 | addr->basic_errno = ERRNO_FORBIDREPLY; | |
6449 | addr->message = US"autoreply forbidden"; | |
ba936fb8 | 6450 | (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6451 | continue; /* with the next new address */ |
6452 | } | |
6453 | ||
6454 | /* If the errno field is already set to BADTRANSPORT, it indicates | |
6455 | failure to expand a transport string, or find the associated transport, | |
6456 | or an unset transport when one is required. Leave this test till now so | |
6457 | that the forbid errors are given in preference. */ | |
6458 | ||
6459 | if (addr->basic_errno == ERRNO_BADTRANSPORT) | |
6460 | { | |
ba936fb8 | 6461 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6462 | continue; |
6463 | } | |
6464 | ||
6465 | /* Treat /dev/null as a special case and abandon the delivery. This | |
6466 | avoids having to specify a uid on the transport just for this case. | |
6467 | Arrange for the transport name to be logged as "**bypassed**". */ | |
6468 | ||
6469 | if (Ustrcmp(addr->address, "/dev/null") == 0) | |
6470 | { | |
6471 | uschar *save = addr->transport->name; | |
6472 | addr->transport->name = US"**bypassed**"; | |
ba936fb8 | 6473 | (void)post_process_one(addr, OK, LOG_MAIN, EXIM_DTYPE_TRANSPORT, '='); |
059ec3d9 PH |
6474 | addr->transport->name = save; |
6475 | continue; /* with the next new address */ | |
6476 | } | |
6477 | ||
6478 | /* Pipe, file, or autoreply delivery is to go ahead as a normal local | |
6479 | delivery. */ | |
6480 | ||
6481 | DEBUG(D_deliver|D_route) | |
6482 | debug_printf("queued for %s transport\n", addr->transport->name); | |
6483 | addr->next = addr_local; | |
6484 | addr_local = addr; | |
6485 | continue; /* with the next new address */ | |
6486 | } | |
6487 | ||
6488 | /* Handle normal addresses. First, split up into local part and domain, | |
6489 | handling the %-hack if necessary. There is the possibility of a defer from | |
6490 | a lookup in percent_hack_domains. */ | |
6491 | ||
6492 | if ((rc = deliver_split_address(addr)) == DEFER) | |
6493 | { | |
6494 | addr->message = US"cannot check percent_hack_domains"; | |
6495 | addr->basic_errno = ERRNO_LISTDEFER; | |
ba936fb8 | 6496 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
059ec3d9 PH |
6497 | continue; |
6498 | } | |
6499 | ||
6500 | /* Check to see if the domain is held. If so, proceed only if the | |
6501 | delivery was forced by hand. */ | |
6502 | ||
6503 | deliver_domain = addr->domain; /* set $domain */ | |
d6c82d7b JH |
6504 | if ( !forced && hold_domains |
6505 | && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0, | |
059ec3d9 | 6506 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, |
d6c82d7b JH |
6507 | NULL)) != FAIL |
6508 | ) | |
059ec3d9 PH |
6509 | { |
6510 | if (rc == DEFER) | |
6511 | { | |
6512 | addr->message = US"hold_domains lookup deferred"; | |
6513 | addr->basic_errno = ERRNO_LISTDEFER; | |
6514 | } | |
6515 | else | |
6516 | { | |
6517 | addr->message = US"domain is held"; | |
6518 | addr->basic_errno = ERRNO_HELD; | |
6519 | } | |
ba936fb8 | 6520 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0); |
059ec3d9 PH |
6521 | continue; |
6522 | } | |
6523 | ||
6524 | /* Now we can check for duplicates and previously delivered addresses. In | |
6525 | order to do this, we have to generate a "unique" value for each address, | |
6526 | because there may be identical actual addresses in a line of descendents. | |
6527 | The "unique" field is initialized to the same value as the "address" field, | |
6528 | but gets changed here to cope with identically-named descendents. */ | |
6529 | ||
d6c82d7b | 6530 | for (parent = addr->parent; parent; parent = parent->parent) |
059ec3d9 PH |
6531 | if (strcmpic(addr->address, parent->address) == 0) break; |
6532 | ||
6533 | /* If there's an ancestor with the same name, set the homonym flag. This | |
6534 | influences how deliveries are recorded. Then add a prefix on the front of | |
6535 | the unique address. We use \n\ where n starts at 0 and increases each time. | |
6536 | It is unlikely to pass 9, but if it does, it may look odd but will still | |
6537 | work. This means that siblings or cousins with the same names are treated | |
6538 | as duplicates, which is what we want. */ | |
6539 | ||
d6c82d7b | 6540 | if (parent) |
059ec3d9 PH |
6541 | { |
6542 | setflag(addr, af_homonym); | |
6543 | if (parent->unique[0] != '\\') | |
6544 | addr->unique = string_sprintf("\\0\\%s", addr->address); | |
6545 | else | |
6546 | addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1, | |
6547 | addr->address); | |
6548 | } | |
6549 | ||
6550 | /* Ensure that the domain in the unique field is lower cased, because | |
6551 | domains are always handled caselessly. */ | |
6552 | ||
6553 | p = Ustrrchr(addr->unique, '@'); | |
6554 | while (*p != 0) { *p = tolower(*p); p++; } | |
6555 | ||
6556 | DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique); | |
6557 | ||
d6c82d7b | 6558 | if (tree_search(tree_nonrecipients, addr->unique)) |
059ec3d9 PH |
6559 | { |
6560 | DEBUG(D_deliver|D_route) | |
6561 | debug_printf("%s was previously delivered: discarded\n", addr->unique); | |
6562 | child_done(addr, tod_stamp(tod_log)); | |
6563 | continue; | |
6564 | } | |
6565 | ||
059ec3d9 | 6566 | /* Get the routing retry status, saving the two retry keys (with and |
48c7f9e2 PH |
6567 | without the local part) for subsequent use. If there is no retry record for |
6568 | the standard address routing retry key, we look for the same key with the | |
6569 | sender attached, because this form is used by the smtp transport after a | |
6570 | 4xx response to RCPT when address_retry_include_sender is true. */ | |
059ec3d9 PH |
6571 | |
6572 | addr->domain_retry_key = string_sprintf("R:%s", addr->domain); | |
6573 | addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part, | |
6574 | addr->domain); | |
6575 | ||
d6c82d7b | 6576 | if (dbm_file) |
059ec3d9 PH |
6577 | { |
6578 | domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key); | |
d6c82d7b JH |
6579 | if ( domain_retry_record |
6580 | && now - domain_retry_record->time_stamp > retry_data_expire | |
6581 | ) | |
de6f74f2 JH |
6582 | { |
6583 | DEBUG(D_deliver|D_retry) | |
6584 | debug_printf("domain retry record present but expired\n"); | |
48c7f9e2 | 6585 | domain_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6586 | } |
059ec3d9 PH |
6587 | |
6588 | address_retry_record = dbfn_read(dbm_file, addr->address_retry_key); | |
d6c82d7b JH |
6589 | if ( address_retry_record |
6590 | && now - address_retry_record->time_stamp > retry_data_expire | |
6591 | ) | |
de6f74f2 JH |
6592 | { |
6593 | DEBUG(D_deliver|D_retry) | |
6594 | debug_printf("address retry record present but expired\n"); | |
48c7f9e2 | 6595 | address_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6596 | } |
48c7f9e2 | 6597 | |
d6c82d7b | 6598 | if (!address_retry_record) |
48c7f9e2 | 6599 | { |
09945f1e | 6600 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
48c7f9e2 PH |
6601 | sender_address); |
6602 | address_retry_record = dbfn_read(dbm_file, altkey); | |
d6c82d7b JH |
6603 | if ( address_retry_record |
6604 | && now - address_retry_record->time_stamp > retry_data_expire) | |
de6f74f2 JH |
6605 | { |
6606 | DEBUG(D_deliver|D_retry) | |
6607 | debug_printf("address<sender> retry record present but expired\n"); | |
48c7f9e2 | 6608 | address_retry_record = NULL; /* Ignore if too old */ |
de6f74f2 | 6609 | } |
48c7f9e2 | 6610 | } |
059ec3d9 | 6611 | } |
d6c82d7b JH |
6612 | else |
6613 | domain_retry_record = address_retry_record = NULL; | |
059ec3d9 PH |
6614 | |
6615 | DEBUG(D_deliver|D_retry) | |
6616 | { | |
d6c82d7b | 6617 | if (!domain_retry_record) |
de6f74f2 JH |
6618 | debug_printf("no domain retry record\n"); |
6619 | else | |
6620 | debug_printf("have domain retry record; next_try = now%+d\n", | |
6621 | f.running_in_test_harness ? 0 : | |
6622 | (int)(domain_retry_record->next_try - now)); | |
6623 | ||
d6c82d7b | 6624 | if (!address_retry_record) |
de6f74f2 JH |
6625 | debug_printf("no address retry record\n"); |
6626 | else | |
6627 | debug_printf("have address retry record; next_try = now%+d\n", | |
6628 | f.running_in_test_harness ? 0 : | |
6629 | (int)(address_retry_record->next_try - now)); | |
059ec3d9 PH |
6630 | } |
6631 | ||
6632 | /* If we are sending a message down an existing SMTP connection, we must | |
6633 | assume that the message which created the connection managed to route | |
6634 | an address to that connection. We do not want to run the risk of taking | |
6635 | a long time over routing here, because if we do, the server at the other | |
6636 | end of the connection may time it out. This is especially true for messages | |
6637 | with lots of addresses. For this kind of delivery, queue_running is not | |
6638 | set, so we would normally route all addresses. We take a pragmatic approach | |
6639 | and defer routing any addresses that have any kind of domain retry record. | |
6640 | That is, we don't even look at their retry times. It doesn't matter if this | |
6641 | doesn't work occasionally. This is all just an optimization, after all. | |
6642 | ||
6643 | The reason for not doing the same for address retries is that they normally | |
6644 | arise from 4xx responses, not DNS timeouts. */ | |
6645 | ||
d6c82d7b | 6646 | if (continue_hostname && domain_retry_record) |
059ec3d9 PH |
6647 | { |
6648 | addr->message = US"reusing SMTP connection skips previous routing defer"; | |
6649 | addr->basic_errno = ERRNO_RRETRY; | |
ba936fb8 | 6650 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
de6f74f2 JH |
6651 | |
6652 | addr->message = domain_retry_record->text; | |
6653 | setflag(addr, af_pass_message); | |
059ec3d9 PH |
6654 | } |
6655 | ||
f6c332bd PH |
6656 | /* If we are in a queue run, defer routing unless there is no retry data or |
6657 | we've passed the next retry time, or this message is forced. In other | |
6658 | words, ignore retry data when not in a queue run. | |
6659 | ||
6660 | However, if the domain retry time has expired, always allow the routing | |
6661 | attempt. If it fails again, the address will be failed. This ensures that | |
059ec3d9 PH |
6662 | each address is routed at least once, even after long-term routing |
6663 | failures. | |
6664 | ||
6665 | If there is an address retry, check that too; just wait for the next | |
6666 | retry time. This helps with the case when the temporary error on the | |
6667 | address was really message-specific rather than address specific, since | |
f6c332bd PH |
6668 | it allows other messages through. |
6669 | ||
6670 | We also wait for the next retry time if this is a message sent down an | |
6671 | existing SMTP connection (even though that will be forced). Otherwise there | |
6672 | will be far too many attempts for an address that gets a 4xx error. In | |
6673 | fact, after such an error, we should not get here because, the host should | |
6674 | not be remembered as one this message needs. However, there was a bug that | |
ba9af0af TF |
6675 | used to cause this to happen, so it is best to be on the safe side. |
6676 | ||
1ddeb334 TF |
6677 | Even if we haven't reached the retry time in the hints, there is one more |
6678 | check to do, which is for the ultimate address timeout. We only do this | |
6679 | check if there is an address retry record and there is not a domain retry | |
6680 | record; this implies that previous attempts to handle the address had the | |
6681 | retry_use_local_parts option turned on. We use this as an approximation | |
6682 | for the destination being like a local delivery, for example delivery over | |
6683 | LMTP to an IMAP message store. In this situation users are liable to bump | |
6684 | into their quota and thereby have intermittently successful deliveries, | |
6685 | which keep the retry record fresh, which can lead to us perpetually | |
6686 | deferring messages. */ | |
059ec3d9 | 6687 | |
8768d548 | 6688 | else if ( ( f.queue_running && !f.deliver_force |
d6c82d7b JH |
6689 | || continue_hostname |
6690 | ) | |
6691 | && ( ( domain_retry_record | |
6692 | && now < domain_retry_record->next_try | |
6693 | && !domain_retry_record->expired | |
6694 | ) | |
6695 | || ( address_retry_record | |
6696 | && now < address_retry_record->next_try | |
6697 | ) ) | |
6698 | && ( domain_retry_record | |
6699 | || !address_retry_record | |
6700 | || !retry_ultimate_address_timeout(addr->address_retry_key, | |
6701 | addr->domain, address_retry_record, now) | |
6702 | ) ) | |
059ec3d9 PH |
6703 | { |
6704 | addr->message = US"retry time not reached"; | |
6705 | addr->basic_errno = ERRNO_RRETRY; | |
ba936fb8 | 6706 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
de6f74f2 JH |
6707 | |
6708 | /* For remote-retry errors (here and just above) that we've not yet | |
81a559c8 | 6709 | hit the retry time, use the error recorded in the retry database |
de6f74f2 JH |
6710 | as info in the warning message. This lets us send a message even |
6711 | when we're not failing on a fresh attempt. We assume that this | |
6712 | info is not sensitive. */ | |
6713 | ||
6714 | addr->message = domain_retry_record | |
6715 | ? domain_retry_record->text : address_retry_record->text; | |
6716 | setflag(addr, af_pass_message); | |
059ec3d9 PH |
6717 | } |
6718 | ||
6719 | /* The domain is OK for routing. Remember if retry data exists so it | |
6720 | can be cleaned up after a successful delivery. */ | |
6721 | ||
6722 | else | |
6723 | { | |
d6c82d7b | 6724 | if (domain_retry_record || address_retry_record) |
059ec3d9 PH |
6725 | setflag(addr, af_dr_retry_exists); |
6726 | addr->next = addr_route; | |
6727 | addr_route = addr; | |
6728 | DEBUG(D_deliver|D_route) | |
6729 | debug_printf("%s: queued for routing\n", addr->address); | |
6730 | } | |
6731 | } | |
6732 | ||
6733 | /* The database is closed while routing is actually happening. Requests to | |
6734 | update it are put on a chain and all processed together at the end. */ | |
6735 | ||
d6c82d7b | 6736 | if (dbm_file) dbfn_close(dbm_file); |
059ec3d9 PH |
6737 | |
6738 | /* If queue_domains is set, we don't even want to try routing addresses in | |
6739 | those domains. During queue runs, queue_domains is forced to be unset. | |
6740 | Optimize by skipping this pass through the addresses if nothing is set. */ | |
6741 | ||
8768d548 | 6742 | if (!f.deliver_force && queue_domains) |
059ec3d9 PH |
6743 | { |
6744 | address_item *okaddr = NULL; | |
d6c82d7b | 6745 | while (addr_route) |
059ec3d9 PH |
6746 | { |
6747 | address_item *addr = addr_route; | |
6748 | addr_route = addr->next; | |
6749 | ||
6750 | deliver_domain = addr->domain; /* set $domain */ | |
55414b25 | 6751 | if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0, |
059ec3d9 PH |
6752 | &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL)) |
6753 | != OK) | |
059ec3d9 PH |
6754 | if (rc == DEFER) |
6755 | { | |
6756 | addr->basic_errno = ERRNO_LISTDEFER; | |
6757 | addr->message = US"queue_domains lookup deferred"; | |
ba936fb8 | 6758 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6759 | } |
6760 | else | |
6761 | { | |
6762 | addr->next = okaddr; | |
6763 | okaddr = addr; | |
6764 | } | |
059ec3d9 PH |
6765 | else |
6766 | { | |
6767 | addr->basic_errno = ERRNO_QUEUE_DOMAIN; | |
6768 | addr->message = US"domain is in queue_domains"; | |
ba936fb8 | 6769 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6770 | } |
6771 | } | |
6772 | ||
6773 | addr_route = okaddr; | |
6774 | } | |
6775 | ||
6776 | /* Now route those addresses that are not deferred. */ | |
6777 | ||
d6c82d7b | 6778 | while (addr_route) |
059ec3d9 PH |
6779 | { |
6780 | int rc; | |
6781 | address_item *addr = addr_route; | |
55414b25 | 6782 | const uschar *old_domain = addr->domain; |
059ec3d9 PH |
6783 | uschar *old_unique = addr->unique; |
6784 | addr_route = addr->next; | |
6785 | addr->next = NULL; | |
6786 | ||
6787 | /* Just in case some router parameter refers to it. */ | |
6788 | ||
d6c82d7b JH |
6789 | if (!(return_path = addr->prop.errors_address)) |
6790 | return_path = sender_address; | |
059ec3d9 PH |
6791 | |
6792 | /* If a router defers an address, add a retry item. Whether or not to | |
6793 | use the local part in the key is a property of the router. */ | |
6794 | ||
6795 | if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new, | |
6796 | &addr_succeed, v_none)) == DEFER) | |
d6c82d7b JH |
6797 | retry_add_item(addr, |
6798 | addr->router->retry_use_local_part | |
f3ebb786 JH |
6799 | ? string_sprintf("R:%s@%s", addr->local_part, addr->domain) |
6800 | : string_sprintf("R:%s", addr->domain), | |
d6c82d7b | 6801 | 0); |
059ec3d9 PH |
6802 | |
6803 | /* Otherwise, if there is an existing retry record in the database, add | |
09945f1e PH |
6804 | retry items to delete both forms. We must also allow for the possibility |
6805 | of a routing retry that includes the sender address. Since the domain might | |
6806 | have been rewritten (expanded to fully qualified) as a result of routing, | |
6807 | ensure that the rewritten form is also deleted. */ | |
059ec3d9 PH |
6808 | |
6809 | else if (testflag(addr, af_dr_retry_exists)) | |
6810 | { | |
09945f1e PH |
6811 | uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key, |
6812 | sender_address); | |
6813 | retry_add_item(addr, altkey, rf_delete); | |
059ec3d9 PH |
6814 | retry_add_item(addr, addr->address_retry_key, rf_delete); |
6815 | retry_add_item(addr, addr->domain_retry_key, rf_delete); | |
6816 | if (Ustrcmp(addr->domain, old_domain) != 0) | |
6817 | retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete); | |
6818 | } | |
6819 | ||
6820 | /* DISCARD is given for :blackhole: and "seen finish". The event has been | |
6821 | logged, but we need to ensure the address (and maybe parents) is marked | |
6822 | done. */ | |
6823 | ||
6824 | if (rc == DISCARD) | |
6825 | { | |
6826 | address_done(addr, tod_stamp(tod_log)); | |
6827 | continue; /* route next address */ | |
6828 | } | |
6829 | ||
6830 | /* The address is finished with (failed or deferred). */ | |
6831 | ||
6832 | if (rc != OK) | |
6833 | { | |
ba936fb8 | 6834 | (void)post_process_one(addr, rc, LOG_MAIN, EXIM_DTYPE_ROUTER, 0); |
059ec3d9 PH |
6835 | continue; /* route next address */ |
6836 | } | |
6837 | ||
6838 | /* The address has been routed. If the router changed the domain, it will | |
6839 | also have changed the unique address. We have to test whether this address | |
6840 | has already been delivered, because it's the unique address that finally | |
6841 | gets recorded. */ | |
6842 | ||
d6c82d7b JH |
6843 | if ( addr->unique != old_unique |
6844 | && tree_search(tree_nonrecipients, addr->unique) != 0 | |
6845 | ) | |
059ec3d9 PH |
6846 | { |
6847 | DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: " | |
6848 | "discarded\n", addr->address); | |
6849 | if (addr_remote == addr) addr_remote = addr->next; | |
6850 | else if (addr_local == addr) addr_local = addr->next; | |
6851 | } | |
6852 | ||
6853 | /* If the router has same_domain_copy_routing set, we are permitted to copy | |
6854 | the routing for any other addresses with the same domain. This is an | |
6855 | optimisation to save repeated DNS lookups for "standard" remote domain | |
6856 | routing. The option is settable only on routers that generate host lists. | |
6857 | We play it very safe, and do the optimization only if the address is routed | |
6858 | to a remote transport, there are no header changes, and the domain was not | |
6859 | modified by the router. */ | |
6860 | ||
d6c82d7b JH |
6861 | if ( addr_remote == addr |
6862 | && addr->router->same_domain_copy_routing | |
6863 | && !addr->prop.extra_headers | |
6864 | && !addr->prop.remove_headers | |
6865 | && old_domain == addr->domain | |
6866 | ) | |
059ec3d9 PH |
6867 | { |
6868 | address_item **chain = &addr_route; | |
d6c82d7b | 6869 | while (*chain) |
059ec3d9 PH |
6870 | { |
6871 | address_item *addr2 = *chain; | |
6872 | if (Ustrcmp(addr2->domain, addr->domain) != 0) | |
6873 | { | |
6874 | chain = &(addr2->next); | |
6875 | continue; | |
6876 | } | |
6877 | ||
6878 | /* Found a suitable address; take it off the routing list and add it to | |
6879 | the remote delivery list. */ | |
6880 | ||
6881 | *chain = addr2->next; | |
6882 | addr2->next = addr_remote; | |
6883 | addr_remote = addr2; | |
6884 | ||
6885 | /* Copy the routing data */ | |
6886 | ||
6887 | addr2->domain = addr->domain; | |
6888 | addr2->router = addr->router; | |
6889 | addr2->transport = addr->transport; | |
6890 | addr2->host_list = addr->host_list; | |
6891 | addr2->fallback_hosts = addr->fallback_hosts; | |
d43cbe25 | 6892 | addr2->prop.errors_address = addr->prop.errors_address; |
7eb0e5d2 JH |
6893 | copyflag(addr2, addr, af_hide_child); |
6894 | copyflag(addr2, addr, af_local_host_removed); | |
059ec3d9 PH |
6895 | |
6896 | DEBUG(D_deliver|D_route) | |
059ec3d9 PH |
6897 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n" |
6898 | "routing %s\n" | |
6899 | "Routing for %s copied from %s\n", | |
6900 | addr2->address, addr2->address, addr->address); | |
059ec3d9 PH |
6901 | } |
6902 | } | |
6903 | } /* Continue with routing the next address. */ | |
6904 | } /* Loop to process any child addresses that the routers created, and | |
6905 | any rerouted addresses that got put back on the new chain. */ | |
6906 | ||
6907 | ||
6908 | /* Debugging: show the results of the routing */ | |
6909 | ||
6910 | DEBUG(D_deliver|D_retry|D_route) | |
6911 | { | |
059ec3d9 PH |
6912 | debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); |
6913 | debug_printf("After routing:\n Local deliveries:\n"); | |
d7978c0f | 6914 | for (address_item * p = addr_local; p; p = p->next) |
059ec3d9 | 6915 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6916 | |
059ec3d9 | 6917 | debug_printf(" Remote deliveries:\n"); |
d7978c0f | 6918 | for (address_item * p = addr_remote; p; p = p->next) |
059ec3d9 | 6919 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6920 | |
059ec3d9 | 6921 | debug_printf(" Failed addresses:\n"); |
d7978c0f | 6922 | for (address_item * p = addr_failed; p; p = p->next) |
059ec3d9 | 6923 | debug_printf(" %s\n", p->address); |
059ec3d9 | 6924 | |
059ec3d9 | 6925 | debug_printf(" Deferred addresses:\n"); |
d7978c0f | 6926 | for (address_item * p = addr_defer; p; p = p->next) |
059ec3d9 | 6927 | debug_printf(" %s\n", p->address); |
059ec3d9 PH |
6928 | } |
6929 | ||
6930 | /* Free any resources that were cached during routing. */ | |
6931 | ||
6932 | search_tidyup(); | |
6933 | route_tidyup(); | |
6934 | ||
6935 | /* These two variables are set only during routing, after check_local_user. | |
6936 | Ensure they are not set in transports. */ | |
6937 | ||
6938 | local_user_gid = (gid_t)(-1); | |
6939 | local_user_uid = (uid_t)(-1); | |
6940 | ||
d7174846 PH |
6941 | /* Check for any duplicate addresses. This check is delayed until after |
6942 | routing, because the flexibility of the routing configuration means that | |
6943 | identical addresses with different parentage may end up being redirected to | |
6944 | different addresses. Checking for duplicates too early (as we previously used | |
6945 | to) makes this kind of thing not work. */ | |
6946 | ||
6947 | do_duplicate_check(&addr_local); | |
6948 | do_duplicate_check(&addr_remote); | |
6949 | ||
059ec3d9 PH |
6950 | /* When acting as an MUA wrapper, we proceed only if all addresses route to a |
6951 | remote transport. The check that they all end up in one transaction happens in | |
6952 | the do_remote_deliveries() function. */ | |
6953 | ||
d6c82d7b JH |
6954 | if ( mua_wrapper |
6955 | && (addr_local || addr_failed || addr_defer) | |
6956 | ) | |
059ec3d9 PH |
6957 | { |
6958 | address_item *addr; | |
6959 | uschar *which, *colon, *msg; | |
6960 | ||
d6c82d7b | 6961 | if (addr_local) |
059ec3d9 PH |
6962 | { |
6963 | addr = addr_local; | |
6964 | which = US"local"; | |
6965 | } | |
d6c82d7b | 6966 | else if (addr_defer) |
059ec3d9 PH |
6967 | { |
6968 | addr = addr_defer; | |
6969 | which = US"deferred"; | |
6970 | } | |
6971 | else | |
6972 | { | |
6973 | addr = addr_failed; | |
6974 | which = US"failed"; | |
6975 | } | |
6976 | ||
d6c82d7b | 6977 | while (addr->parent) addr = addr->parent; |
059ec3d9 | 6978 | |
d6c82d7b | 6979 | if (addr->message) |
059ec3d9 PH |
6980 | { |
6981 | colon = US": "; | |
6982 | msg = addr->message; | |
6983 | } | |
6984 | else colon = msg = US""; | |
6985 | ||
6986 | /* We don't need to log here for a forced failure as it will already | |
6987 | have been logged. Defer will also have been logged, but as a defer, so we do | |
6988 | need to do the failure logging. */ | |
6989 | ||
6990 | if (addr != addr_failed) | |
6991 | log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery", | |
6992 | addr->address, which); | |
6993 | ||
6994 | /* Always write an error to the caller */ | |
6995 | ||
6996 | fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address, | |
6997 | which, colon, msg); | |
6998 | ||
6999 | final_yield = DELIVER_MUA_FAILED; | |
7000 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
7001 | goto DELIVERY_TIDYUP; | |
7002 | } | |
7003 | ||
7004 | ||
7005 | /* If this is a run to continue deliveries to an external channel that is | |
7006 | already set up, defer any local deliveries. */ | |
7007 | ||
d6c82d7b | 7008 | if (continue_transport) |
059ec3d9 | 7009 | { |
d6c82d7b | 7010 | if (addr_defer) |
059ec3d9 PH |
7011 | { |
7012 | address_item *addr = addr_defer; | |
d6c82d7b | 7013 | while (addr->next) addr = addr->next; |
059ec3d9 PH |
7014 | addr->next = addr_local; |
7015 | } | |
d6c82d7b JH |
7016 | else |
7017 | addr_defer = addr_local; | |
059ec3d9 PH |
7018 | addr_local = NULL; |
7019 | } | |
7020 | ||
7021 | ||
7022 | /* Because address rewriting can happen in the routers, we should not really do | |
7023 | ANY deliveries until all addresses have been routed, so that all recipients of | |
7024 | the message get the same headers. However, this is in practice not always | |
7025 | possible, since sometimes remote addresses give DNS timeouts for days on end. | |
7026 | The pragmatic approach is to deliver what we can now, saving any rewritten | |
7027 | headers so that at least the next lot of recipients benefit from the rewriting | |
7028 | that has already been done. | |
7029 | ||
7030 | If any headers have been rewritten during routing, update the spool file to | |
7031 | remember them for all subsequent deliveries. This can be delayed till later if | |
7032 | there is only address to be delivered - if it succeeds the spool write need not | |
7033 | happen. */ | |
7034 | ||
8768d548 | 7035 | if ( f.header_rewritten |
92b0827a JH |
7036 | && ( addr_local && (addr_local->next || addr_remote) |
7037 | || addr_remote && addr_remote->next | |
d6c82d7b | 7038 | ) ) |
059ec3d9 PH |
7039 | { |
7040 | /* Panic-dies on error */ | |
7041 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
8768d548 | 7042 | f.header_rewritten = FALSE; |
059ec3d9 PH |
7043 | } |
7044 | ||
7045 | ||
de6f74f2 | 7046 | /* If there are any deliveries to do and we do not already have the journal |
92b0827a JH |
7047 | file, create it. This is used to record successful deliveries as soon as |
7048 | possible after each delivery is known to be complete. A file opened with | |
7049 | O_APPEND is used so that several processes can run simultaneously. | |
059ec3d9 PH |
7050 | |
7051 | The journal is just insurance against crashes. When the spool file is | |
7052 | ultimately updated at the end of processing, the journal is deleted. If a | |
7053 | journal is found to exist at the start of delivery, the addresses listed | |
7054 | therein are added to the non-recipients. */ | |
7055 | ||
d6c82d7b | 7056 | if (addr_local || addr_remote) |
059ec3d9 | 7057 | { |
92b0827a | 7058 | if (journal_fd < 0) |
059ec3d9 | 7059 | { |
92b0827a | 7060 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
4c0a7a9c | 7061 | |
92b0827a JH |
7062 | if ((journal_fd = Uopen(fname, |
7063 | #ifdef O_CLOEXEC | |
7064 | O_CLOEXEC | | |
7065 | #endif | |
7066 | O_WRONLY|O_APPEND|O_CREAT|O_EXCL, SPOOL_MODE)) < 0) | |
7067 | { | |
7068 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s", | |
7069 | fname, strerror(errno)); | |
7070 | return DELIVER_NOT_ATTEMPTED; | |
7071 | } | |
059ec3d9 | 7072 | |
92b0827a JH |
7073 | /* Set the close-on-exec flag, make the file owned by Exim, and ensure |
7074 | that the mode is correct - the group setting doesn't always seem to get | |
7075 | set automatically. */ | |
059ec3d9 | 7076 | |
b66fecb4 | 7077 | if( exim_fchown(journal_fd, exim_uid, exim_gid, fname) |
92b0827a JH |
7078 | || fchmod(journal_fd, SPOOL_MODE) |
7079 | #ifndef O_CLOEXEC | |
7080 | || fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC) | |
7081 | #endif | |
7082 | ) | |
7083 | { | |
7084 | int ret = Uunlink(fname); | |
7085 | log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s", | |
7086 | fname, strerror(errno)); | |
7087 | if(ret && errno != ENOENT) | |
7088 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", | |
7089 | fname, strerror(errno)); | |
7090 | return DELIVER_NOT_ATTEMPTED; | |
7091 | } | |
1ac6b2e7 | 7092 | } |
059ec3d9 | 7093 | } |
92b0827a JH |
7094 | else if (journal_fd >= 0) |
7095 | { | |
7096 | close(journal_fd); | |
7097 | journal_fd = -1; | |
7098 | } | |
059ec3d9 PH |
7099 | |
7100 | ||
1ac6b2e7 | 7101 | |
059ec3d9 PH |
7102 | /* Now we can get down to the business of actually doing deliveries. Local |
7103 | deliveries are done first, then remote ones. If ever the problems of how to | |
7104 | handle fallback transports are figured out, this section can be put into a loop | |
7105 | for handling fallbacks, though the uid switching will have to be revised. */ | |
7106 | ||
f1513293 PH |
7107 | /* Precompile a regex that is used to recognize a parameter in response |
7108 | to an LHLO command, if is isn't already compiled. This may be used on both | |
7109 | local and remote LMTP deliveries. */ | |
7110 | ||
d6c82d7b JH |
7111 | if (!regex_IGNOREQUOTA) |
7112 | regex_IGNOREQUOTA = | |
7113 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
f1513293 PH |
7114 | |
7115 | /* Handle local deliveries */ | |
7116 | ||
d6c82d7b | 7117 | if (addr_local) |
059ec3d9 PH |
7118 | { |
7119 | DEBUG(D_deliver|D_transport) | |
7120 | debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n"); | |
7121 | do_local_deliveries(); | |
8768d548 | 7122 | f.disable_logging = FALSE; |
059ec3d9 PH |
7123 | } |
7124 | ||
7125 | /* If queue_run_local is set, we do not want to attempt any remote deliveries, | |
7126 | so just queue them all. */ | |
7127 | ||
8768d548 | 7128 | if (f.queue_run_local) |
d6c82d7b | 7129 | while (addr_remote) |
059ec3d9 PH |
7130 | { |
7131 | address_item *addr = addr_remote; | |
7132 | addr_remote = addr->next; | |
7133 | addr->next = NULL; | |
7134 | addr->basic_errno = ERRNO_LOCAL_ONLY; | |
7135 | addr->message = US"remote deliveries suppressed"; | |
ba936fb8 | 7136 | (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0); |
059ec3d9 | 7137 | } |
059ec3d9 PH |
7138 | |
7139 | /* Handle remote deliveries */ | |
7140 | ||
d6c82d7b | 7141 | if (addr_remote) |
059ec3d9 PH |
7142 | { |
7143 | DEBUG(D_deliver|D_transport) | |
7144 | debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n"); | |
7145 | ||
7146 | /* Precompile some regex that are used to recognize parameters in response | |
7147 | to an EHLO command, if they aren't already compiled. */ | |
7148 | ||
476be7e2 | 7149 | deliver_init(); |
6c1c3d1d | 7150 | |
059ec3d9 PH |
7151 | /* Now sort the addresses if required, and do the deliveries. The yield of |
7152 | do_remote_deliveries is FALSE when mua_wrapper is set and all addresses | |
7153 | cannot be delivered in one transaction. */ | |
7154 | ||
d6c82d7b | 7155 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
7156 | if (!do_remote_deliveries(FALSE)) |
7157 | { | |
7158 | log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all " | |
7159 | "be delivered in one transaction"); | |
7160 | fprintf(stderr, "delivery to smarthost failed (configuration problem)\n"); | |
7161 | ||
7162 | final_yield = DELIVER_MUA_FAILED; | |
7163 | addr_failed = addr_defer = NULL; /* So that we remove the message */ | |
7164 | goto DELIVERY_TIDYUP; | |
7165 | } | |
7166 | ||
7167 | /* See if any of the addresses that failed got put on the queue for delivery | |
7168 | to their fallback hosts. We do it this way because often the same fallback | |
7169 | host is used for many domains, so all can be sent in a single transaction | |
7170 | (if appropriately configured). */ | |
7171 | ||
d6c82d7b | 7172 | if (addr_fallback && !mua_wrapper) |
059ec3d9 PH |
7173 | { |
7174 | DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n"); | |
7175 | addr_remote = addr_fallback; | |
7176 | addr_fallback = NULL; | |
d6c82d7b | 7177 | if (remote_sort_domains) sort_remote_deliveries(); |
059ec3d9 PH |
7178 | do_remote_deliveries(TRUE); |
7179 | } | |
8768d548 | 7180 | f.disable_logging = FALSE; |
059ec3d9 PH |
7181 | } |
7182 | ||
7183 | ||
7184 | /* All deliveries are now complete. Ignore SIGTERM during this tidying up | |
7185 | phase, to minimize cases of half-done things. */ | |
7186 | ||
7187 | DEBUG(D_deliver) | |
7188 | debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n"); | |
ef698bf6 | 7189 | cancel_cutthrough_connection(TRUE, US"deliveries are done"); |
059ec3d9 PH |
7190 | |
7191 | /* Root privilege is no longer needed */ | |
7192 | ||
7193 | exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying"); | |
7194 | ||
7195 | set_process_info("tidying up after delivering %s", message_id); | |
7196 | signal(SIGTERM, SIG_IGN); | |
7197 | ||
7198 | /* When we are acting as an MUA wrapper, the smtp transport will either have | |
47c7a64a PH |
7199 | succeeded for all addresses, or failed them all in normal cases. However, there |
7200 | are some setup situations (e.g. when a named port does not exist) that cause an | |
7201 | immediate exit with deferral of all addresses. Convert those into failures. We | |
7202 | do not ever want to retry, nor do we want to send a bounce message. */ | |
059ec3d9 PH |
7203 | |
7204 | if (mua_wrapper) | |
7205 | { | |
d6c82d7b | 7206 | if (addr_defer) |
47c7a64a | 7207 | { |
d7978c0f JH |
7208 | address_item * nextaddr; |
7209 | for (address_item * addr = addr_defer; addr; addr = nextaddr) | |
47c7a64a PH |
7210 | { |
7211 | log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred " | |
7212 | "delivery", addr->address); | |
7213 | nextaddr = addr->next; | |
7214 | addr->next = addr_failed; | |
7215 | addr_failed = addr; | |
7216 | } | |
7217 | addr_defer = NULL; | |
7218 | } | |
7219 | ||
7220 | /* Now all should either have succeeded or failed. */ | |
7221 | ||
d6c82d7b JH |
7222 | if (!addr_failed) |
7223 | final_yield = DELIVER_MUA_SUCCEEDED; | |
7224 | else | |
059ec3d9 | 7225 | { |
c562fd30 | 7226 | host_item * host; |
d6c82d7b JH |
7227 | uschar *s = addr_failed->user_message; |
7228 | ||
7229 | if (!s) s = addr_failed->message; | |
059ec3d9 PH |
7230 | |
7231 | fprintf(stderr, "Delivery failed: "); | |
7232 | if (addr_failed->basic_errno > 0) | |
7233 | { | |
7234 | fprintf(stderr, "%s", strerror(addr_failed->basic_errno)); | |
d6c82d7b | 7235 | if (s) fprintf(stderr, ": "); |
059ec3d9 | 7236 | } |
c562fd30 JH |
7237 | if ((host = addr_failed->host_used)) |
7238 | fprintf(stderr, "H=%s [%s]: ", host->name, host->address); | |
d6c82d7b JH |
7239 | if (s) |
7240 | fprintf(stderr, "%s", CS s); | |
7241 | else if (addr_failed->basic_errno <= 0) | |
7242 | fprintf(stderr, "unknown error"); | |
059ec3d9 PH |
7243 | fprintf(stderr, "\n"); |
7244 | ||
7245 | final_yield = DELIVER_MUA_FAILED; | |
7246 | addr_failed = NULL; | |
7247 | } | |
7248 | } | |
7249 | ||
7250 | /* In a normal configuration, we now update the retry database. This is done in | |
7251 | one fell swoop at the end in order not to keep opening and closing (and | |
7252 | locking) the database. The code for handling retries is hived off into a | |
7253 | separate module for convenience. We pass it the addresses of the various | |
7254 | chains, because deferred addresses can get moved onto the failed chain if the | |
7255 | retry cutoff time has expired for all alternative destinations. Bypass the | |
7256 | updating of the database if the -N flag is set, which is a debugging thing that | |
7257 | prevents actual delivery. */ | |
7258 | ||
8768d548 | 7259 | else if (!f.dont_deliver) |
d6c82d7b | 7260 | retry_update(&addr_defer, &addr_failed, &addr_succeed); |
059ec3d9 | 7261 | |
f40d5be3 | 7262 | /* Send DSN for successful messages if requested */ |
6c1c3d1d WB |
7263 | addr_senddsn = NULL; |
7264 | ||
436bda2a | 7265 | for (address_item * a = addr_succeed; a; a = a->next) |
6c1c3d1d | 7266 | { |
6c1c3d1d | 7267 | /* af_ignore_error not honored here. it's not an error */ |
f40d5be3 | 7268 | DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n" |
9671784a JH |
7269 | "DSN: processing successful delivery address: %s\n" |
7270 | "DSN: Sender_address: %s\n" | |
df98a6ff | 7271 | "DSN: orcpt: %s flags: 0x%x\n" |
9671784a JH |
7272 | "DSN: envid: %s ret: %d\n" |
7273 | "DSN: Final recipient: %s\n" | |
7274 | "DSN: Remote SMTP server supports DSN: %d\n", | |
436bda2a JH |
7275 | a->router ? a->router->name : US"(unknown)", |
7276 | a->address, | |
9671784a | 7277 | sender_address, |
436bda2a JH |
7278 | a->dsn_orcpt ? a->dsn_orcpt : US"NULL", |
7279 | a->dsn_flags, | |
d011368a | 7280 | dsn_envid ? dsn_envid : US"NULL", dsn_ret, |
436bda2a JH |
7281 | a->address, |
7282 | a->dsn_aware | |
9671784a | 7283 | ); |
6c1c3d1d WB |
7284 | |
7285 | /* send report if next hop not DSN aware or a router flagged "last DSN hop" | |
7286 | and a report was requested */ | |
436bda2a JH |
7287 | if ( ( a->dsn_aware != dsn_support_yes |
7288 | || a->dsn_flags & rf_dsnlasthop | |
9671784a | 7289 | ) |
436bda2a | 7290 | && a->dsn_flags & rf_notify_success |
9671784a | 7291 | ) |
6c1c3d1d WB |
7292 | { |
7293 | /* copy and relink address_item and send report with all of them at once later */ | |
82f90600 | 7294 | address_item * addr_next = addr_senddsn; |
f3ebb786 | 7295 | addr_senddsn = store_get(sizeof(address_item), FALSE); |
436bda2a | 7296 | *addr_senddsn = *a; |
6c1c3d1d WB |
7297 | addr_senddsn->next = addr_next; |
7298 | } | |
7299 | else | |
94431adb | 7300 | DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n"); |
6c1c3d1d WB |
7301 | } |
7302 | ||
9671784a | 7303 | if (addr_senddsn) |
6c1c3d1d WB |
7304 | { |
7305 | pid_t pid; | |
7306 | int fd; | |
7307 | ||
94431adb | 7308 | /* create exim process to send message */ |
6c1c3d1d WB |
7309 | pid = child_open_exim(&fd); |
7310 | ||
7311 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid); | |
94431adb | 7312 | |
6c1c3d1d WB |
7313 | if (pid < 0) /* Creation of child failed */ |
7314 | { | |
7315 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " | |
d6c829b9 | 7316 | "create child process to send success-dsn message: %s", getpid(), |
6c1c3d1d WB |
7317 | getppid(), strerror(errno)); |
7318 | ||
1c5b1499 | 7319 | DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n"); |
94431adb | 7320 | } |
6c1c3d1d WB |
7321 | else /* Creation of child succeeded */ |
7322 | { | |
ee8b8090 | 7323 | FILE * f = fdopen(fd, "wb"); |
6c1c3d1d | 7324 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ |
45500060 | 7325 | uschar * bound; |
cab0c277 | 7326 | transport_ctx tctx = {{0}}; |
94431adb | 7327 | |
1c5b1499 | 7328 | DEBUG(D_deliver) |
d6c829b9 | 7329 | debug_printf("sending success-dsn to: %s\n", sender_address); |
94431adb | 7330 | |
6c1c3d1d | 7331 | /* build unique id for MIME boundary */ |
45500060 JH |
7332 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
7333 | DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound); | |
94431adb | 7334 | |
c007c974 JH |
7335 | if (errors_reply_to) |
7336 | fprintf(f, "Reply-To: %s\n", errors_reply_to); | |
94431adb | 7337 | |
87abcb24 | 7338 | moan_write_from(f); |
c007c974 | 7339 | fprintf(f, "Auto-Submitted: auto-generated\n" |
c007c974 | 7340 | "To: %s\n" |
d6c829b9 JH |
7341 | "Subject: Delivery Status Notification\n", |
7342 | sender_address); | |
7343 | moan_write_references(f, NULL); | |
7344 | fprintf(f, "Content-Type: multipart/report;" | |
7345 | " report-type=delivery-status; boundary=%s\n" | |
c007c974 JH |
7346 | "MIME-Version: 1.0\n\n" |
7347 | ||
7348 | "--%s\n" | |
7349 | "Content-type: text/plain; charset=us-ascii\n\n" | |
94431adb | 7350 | |
c007c974 | 7351 | "This message was created automatically by mail delivery software.\n" |
8864c2c4 | 7352 | " ----- The following addresses had successful delivery notifications -----\n", |
d6c829b9 | 7353 | bound, bound); |
6c1c3d1d | 7354 | |
436bda2a | 7355 | for (address_item * a = addr_senddsn; a; a = a->next) |
c007c974 | 7356 | fprintf(f, "<%s> (relayed %s)\n\n", |
436bda2a JH |
7357 | a->address, |
7358 | a->dsn_flags & rf_dsnlasthop ? "via non DSN router" | |
7359 | : a->dsn_aware == dsn_support_no ? "to non-DSN-aware mailer" | |
ea97267c | 7360 | : "via non \"Remote SMTP\" router" |
c007c974 | 7361 | ); |
1c5b1499 | 7362 | |
c007c974 JH |
7363 | fprintf(f, "--%s\n" |
7364 | "Content-type: message/delivery-status\n\n" | |
7365 | "Reporting-MTA: dns; %s\n", | |
45500060 | 7366 | bound, smtp_active_hostname); |
c007c974 | 7367 | |
1c5b1499 JH |
7368 | if (dsn_envid) |
7369 | { /* must be decoded from xtext: see RFC 3461:6.3a */ | |
6c1c3d1d WB |
7370 | uschar *xdec_envid; |
7371 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
c007c974 | 7372 | fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7373 | else |
968178ac | 7374 | fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7375 | } |
c007c974 | 7376 | fputc('\n', f); |
6c1c3d1d | 7377 | |
436bda2a | 7378 | for (address_item * a = addr_senddsn; a; a = a->next) |
6c1c3d1d | 7379 | { |
436bda2a | 7380 | host_item * hu; |
c007c974 | 7381 | |
436bda2a | 7382 | print_dsn_addr_action(f, a, US"delivered", US"2.0.0"); |
c007c974 | 7383 | |
436bda2a | 7384 | if ((hu = a->host_used) && hu->name) |
1c5b1499 | 7385 | fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n", |
436bda2a | 7386 | hu->name); |
6c1c3d1d | 7387 | else |
1c5b1499 | 7388 | fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n", |
436bda2a | 7389 | a->dsn_flags & rf_dsnlasthop ? "DSN" : "SMTP"); |
6c1c3d1d WB |
7390 | } |
7391 | ||
45500060 | 7392 | fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound); |
94431adb | 7393 | |
6c1c3d1d WB |
7394 | fflush(f); |
7395 | transport_filter_argv = NULL; /* Just in case */ | |
7396 | return_path = sender_address; /* In case not previously set */ | |
94431adb | 7397 | |
6c1c3d1d | 7398 | /* Write the original email out */ |
6b46ecc6 | 7399 | |
ee8b8090 | 7400 | tctx.u.fd = fd; |
6b46ecc6 | 7401 | tctx.options = topt_add_return_path | topt_no_body; |
fc243e94 | 7402 | /*XXX hmm, FALSE(fail) retval ignored. |
ee8b8090 | 7403 | Could error for any number of reasons, and they are not handled. */ |
42055a33 | 7404 | transport_write_message(&tctx, 0); |
6c1c3d1d WB |
7405 | fflush(f); |
7406 | ||
21bc4865 | 7407 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
7408 | |
7409 | fflush(f); | |
7410 | fclose(f); | |
7411 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ | |
7412 | } | |
7413 | } | |
6c1c3d1d | 7414 | |
059ec3d9 PH |
7415 | /* If any addresses failed, we must send a message to somebody, unless |
7416 | af_ignore_error is set, in which case no action is taken. It is possible for | |
7417 | several messages to get sent if there are addresses with different | |
7418 | requirements. */ | |
7419 | ||
d6c82d7b | 7420 | while (addr_failed) |
059ec3d9 PH |
7421 | { |
7422 | pid_t pid; | |
7423 | int fd; | |
7424 | uschar *logtod = tod_stamp(tod_log); | |
7425 | address_item *addr; | |
7426 | address_item *handled_addr = NULL; | |
7427 | address_item **paddr; | |
7428 | address_item *msgchain = NULL; | |
7429 | address_item **pmsgchain = &msgchain; | |
7430 | ||
7431 | /* There are weird cases when logging is disabled in the transport. However, | |
7432 | there may not be a transport (address failed by a router). */ | |
7433 | ||
8768d548 | 7434 | f.disable_logging = FALSE; |
d6c82d7b | 7435 | if (addr_failed->transport) |
8768d548 | 7436 | f.disable_logging = addr_failed->transport->disable_logging; |
059ec3d9 PH |
7437 | |
7438 | DEBUG(D_deliver) | |
7439 | debug_printf("processing failed address %s\n", addr_failed->address); | |
7440 | ||
7441 | /* There are only two ways an address in a bounce message can get here: | |
7442 | ||
7443 | (1) When delivery was initially deferred, but has now timed out (in the call | |
7444 | to retry_update() above). We can detect this by testing for | |
7445 | af_retry_timedout. If the address does not have its own errors address, | |
7446 | we arrange to ignore the error. | |
7447 | ||
7448 | (2) If delivery failures for bounce messages are being ignored. We can detect | |
7449 | this by testing for af_ignore_error. This will also be set if a bounce | |
7450 | message has been autothawed and the ignore_bounce_errors_after time has | |
7451 | passed. It might also be set if a router was explicitly configured to | |
7452 | ignore errors (errors_to = ""). | |
7453 | ||
7454 | If neither of these cases obtains, something has gone wrong. Log the | |
7455 | incident, but then ignore the error. */ | |
7456 | ||
d6c82d7b | 7457 | if (sender_address[0] == 0 && !addr_failed->prop.errors_address) |
059ec3d9 | 7458 | { |
9671784a | 7459 | if ( !testflag(addr_failed, af_retry_timedout) |
7eb0e5d2 | 7460 | && !addr_failed->prop.ignore_error) |
059ec3d9 PH |
7461 | log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message " |
7462 | "failure is neither frozen nor ignored (it's been ignored)"); | |
7eb0e5d2 JH |
7463 | |
7464 | addr_failed->prop.ignore_error = TRUE; | |
059ec3d9 PH |
7465 | } |
7466 | ||
7467 | /* If the first address on the list has af_ignore_error set, just remove | |
7468 | it from the list, throw away any saved message file, log it, and | |
7469 | mark the recipient done. */ | |
7470 | ||
7eb0e5d2 | 7471 | if ( addr_failed->prop.ignore_error |
df98a6ff JH |
7472 | || addr_failed->dsn_flags & rf_dsnflags |
7473 | && !(addr_failed->dsn_flags & rf_notify_failure) | |
ea97267c | 7474 | ) |
1c5b1499 | 7475 | { |
059ec3d9 PH |
7476 | addr = addr_failed; |
7477 | addr_failed = addr->next; | |
d6c82d7b | 7478 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 | 7479 | |
ffbc20ed MK |
7480 | #ifndef DISABLE_EVENT |
7481 | msg_event_raise(US"msg:fail:delivery", addr); | |
7482 | #endif | |
df98a6ff | 7483 | log_write(0, LOG_MAIN, "%s%s%s%s: error ignored%s", |
059ec3d9 | 7484 | addr->address, |
1c5b1499 JH |
7485 | !addr->parent ? US"" : US" <", |
7486 | !addr->parent ? US"" : addr->parent->address, | |
df98a6ff JH |
7487 | !addr->parent ? US"" : US">", |
7488 | addr->prop.ignore_error | |
7489 | ? US"" : US": RFC 3461 DSN, failure notify not requested"); | |
059ec3d9 PH |
7490 | |
7491 | address_done(addr, logtod); | |
7492 | child_done(addr, logtod); | |
7493 | /* Panic-dies on error */ | |
7494 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7495 | } | |
7496 | ||
7497 | /* Otherwise, handle the sending of a message. Find the error address for | |
7498 | the first address, then send a message that includes all failed addresses | |
7499 | that have the same error address. Note the bounce_recipient is a global so | |
4c04137d | 7500 | that it can be accessed by $bounce_recipient while creating a customized |
059ec3d9 PH |
7501 | error message. */ |
7502 | ||
7503 | else | |
7504 | { | |
d6c82d7b JH |
7505 | if (!(bounce_recipient = addr_failed->prop.errors_address)) |
7506 | bounce_recipient = sender_address; | |
059ec3d9 PH |
7507 | |
7508 | /* Make a subprocess to send a message */ | |
7509 | ||
1c5b1499 | 7510 | if ((pid = child_open_exim(&fd)) < 0) |
059ec3d9 PH |
7511 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to " |
7512 | "create child process to send failure message: %s", getpid(), | |
7513 | getppid(), strerror(errno)); | |
7514 | ||
7515 | /* Creation of child succeeded */ | |
7516 | ||
7517 | else | |
7518 | { | |
7519 | int ch, rc; | |
7520 | int filecount = 0; | |
7521 | int rcount = 0; | |
7522 | uschar *bcc, *emf_text; | |
8768d548 JH |
7523 | FILE * fp = fdopen(fd, "wb"); |
7524 | FILE * emf = NULL; | |
059ec3d9 PH |
7525 | BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0; |
7526 | int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) * | |
7527 | DELIVER_IN_BUFFER_SIZE; | |
45500060 | 7528 | uschar * bound; |
0f9d3aea JH |
7529 | uschar *dsnlimitmsg; |
7530 | uschar *dsnnotifyhdr; | |
7531 | int topt; | |
059ec3d9 PH |
7532 | |
7533 | DEBUG(D_deliver) | |
7534 | debug_printf("sending error message to: %s\n", bounce_recipient); | |
7535 | ||
7536 | /* Scan the addresses for all that have the same errors address, removing | |
7537 | them from the addr_failed chain, and putting them on msgchain. */ | |
7538 | ||
7539 | paddr = &addr_failed; | |
d6c82d7b | 7540 | for (addr = addr_failed; addr; addr = *paddr) |
d43cbe25 JH |
7541 | if (Ustrcmp(bounce_recipient, addr->prop.errors_address |
7542 | ? addr->prop.errors_address : sender_address) == 0) | |
1c5b1499 | 7543 | { /* The same - dechain */ |
059ec3d9 PH |
7544 | *paddr = addr->next; |
7545 | *pmsgchain = addr; | |
7546 | addr->next = NULL; | |
7547 | pmsgchain = &(addr->next); | |
7548 | } | |
1c5b1499 JH |
7549 | else |
7550 | paddr = &addr->next; /* Not the same; skip */ | |
059ec3d9 PH |
7551 | |
7552 | /* Include X-Failed-Recipients: for automatic interpretation, but do | |
7553 | not let any one header line get too long. We do this by starting a | |
7554 | new header every 50 recipients. Omit any addresses for which the | |
7555 | "hide_child" flag is set. */ | |
7556 | ||
d6c82d7b | 7557 | for (addr = msgchain; addr; addr = addr->next) |
059ec3d9 PH |
7558 | { |
7559 | if (testflag(addr, af_hide_child)) continue; | |
7560 | if (rcount >= 50) | |
7561 | { | |
8768d548 | 7562 | fprintf(fp, "\n"); |
059ec3d9 PH |
7563 | rcount = 0; |
7564 | } | |
8768d548 | 7565 | fprintf(fp, "%s%s", |
d6c82d7b JH |
7566 | rcount++ == 0 |
7567 | ? "X-Failed-Recipients: " | |
7568 | : ",\n ", | |
7569 | testflag(addr, af_pfr) && addr->parent | |
7570 | ? string_printing(addr->parent->address) | |
7571 | : string_printing(addr->address)); | |
059ec3d9 | 7572 | } |
8768d548 | 7573 | if (rcount > 0) fprintf(fp, "\n"); |
059ec3d9 PH |
7574 | |
7575 | /* Output the standard headers */ | |
7576 | ||
1c5b1499 | 7577 | if (errors_reply_to) |
8768d548 JH |
7578 | fprintf(fp, "Reply-To: %s\n", errors_reply_to); |
7579 | fprintf(fp, "Auto-Submitted: auto-replied\n"); | |
7580 | moan_write_from(fp); | |
7581 | fprintf(fp, "To: %s\n", bounce_recipient); | |
d6c829b9 | 7582 | moan_write_references(fp, NULL); |
059ec3d9 | 7583 | |
6c1c3d1d | 7584 | /* generate boundary string and output MIME-Headers */ |
45500060 | 7585 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 | 7586 | |
8768d548 | 7587 | fprintf(fp, "Content-Type: multipart/report;" |
c007c974 JH |
7588 | " report-type=delivery-status; boundary=%s\n" |
7589 | "MIME-Version: 1.0\n", | |
45500060 | 7590 | bound); |
6c1c3d1d | 7591 | |
059ec3d9 PH |
7592 | /* Open a template file if one is provided. Log failure to open, but |
7593 | carry on - default texts will be used. */ | |
7594 | ||
c007c974 JH |
7595 | if (bounce_message_file) |
7596 | if (!(emf = Ufopen(bounce_message_file, "rb"))) | |
059ec3d9 PH |
7597 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error " |
7598 | "message texts: %s", bounce_message_file, strerror(errno)); | |
059ec3d9 PH |
7599 | |
7600 | /* Quietly copy to configured additional addresses if required. */ | |
7601 | ||
c007c974 | 7602 | if ((bcc = moan_check_errorcopy(bounce_recipient))) |
8768d548 | 7603 | fprintf(fp, "Bcc: %s\n", bcc); |
059ec3d9 PH |
7604 | |
7605 | /* The texts for the message can be read from a template file; if there | |
7606 | isn't one, or if it is too short, built-in texts are used. The first | |
7607 | emf text is a Subject: and any other headers. */ | |
7608 | ||
c007c974 | 7609 | if ((emf_text = next_emf(emf, US"header"))) |
8768d548 | 7610 | fprintf(fp, "%s\n", emf_text); |
c007c974 | 7611 | else |
8768d548 | 7612 | fprintf(fp, "Subject: Mail delivery failed%s\n\n", |
059ec3d9 | 7613 | to_sender? ": returning message to sender" : ""); |
059ec3d9 | 7614 | |
6c1c3d1d | 7615 | /* output human readable part as text/plain section */ |
8768d548 | 7616 | fprintf(fp, "--%s\n" |
c007c974 | 7617 | "Content-type: text/plain; charset=us-ascii\n\n", |
45500060 | 7618 | bound); |
6c1c3d1d | 7619 | |
c007c974 | 7620 | if ((emf_text = next_emf(emf, US"intro"))) |
8768d548 | 7621 | fprintf(fp, "%s", CS emf_text); |
c007c974 | 7622 | else |
059ec3d9 | 7623 | { |
8768d548 | 7624 | fprintf(fp, |
059ec3d9 PH |
7625 | /* This message has been reworded several times. It seems to be confusing to |
7626 | somebody, however it is worded. I have retreated to the original, simple | |
7627 | wording. */ | |
7628 | "This message was created automatically by mail delivery software.\n"); | |
c007c974 JH |
7629 | |
7630 | if (bounce_message_text) | |
8768d548 | 7631 | fprintf(fp, "%s", CS bounce_message_text); |
059ec3d9 | 7632 | if (to_sender) |
8768d548 | 7633 | fprintf(fp, |
059ec3d9 PH |
7634 | "\nA message that you sent could not be delivered to one or more of its\n" |
7635 | "recipients. This is a permanent error. The following address(es) failed:\n"); | |
059ec3d9 | 7636 | else |
8768d548 | 7637 | fprintf(fp, |
059ec3d9 PH |
7638 | "\nA message sent by\n\n <%s>\n\n" |
7639 | "could not be delivered to one or more of its recipients. The following\n" | |
7640 | "address(es) failed:\n", sender_address); | |
059ec3d9 | 7641 | } |
8768d548 | 7642 | fputc('\n', fp); |
059ec3d9 PH |
7643 | |
7644 | /* Process the addresses, leaving them on the msgchain if they have a | |
7645 | file name for a return message. (There has already been a check in | |
447d236c PH |
7646 | post_process_one() for the existence of data in the message file.) A TRUE |
7647 | return from print_address_information() means that the address is not | |
7648 | hidden. */ | |
059ec3d9 PH |
7649 | |
7650 | paddr = &msgchain; | |
d6c82d7b | 7651 | for (addr = msgchain; addr; addr = *paddr) |
059ec3d9 | 7652 | { |
8768d548 JH |
7653 | if (print_address_information(addr, fp, US" ", US"\n ", US"")) |
7654 | print_address_error(addr, fp, US""); | |
059ec3d9 PH |
7655 | |
7656 | /* End the final line for the address */ | |
7657 | ||
8768d548 | 7658 | fputc('\n', fp); |
059ec3d9 PH |
7659 | |
7660 | /* Leave on msgchain if there's a return file. */ | |
7661 | ||
7662 | if (addr->return_file >= 0) | |
7663 | { | |
7664 | paddr = &(addr->next); | |
7665 | filecount++; | |
7666 | } | |
7667 | ||
7668 | /* Else save so that we can tick off the recipient when the | |
7669 | message is sent. */ | |
7670 | ||
7671 | else | |
7672 | { | |
7673 | *paddr = addr->next; | |
7674 | addr->next = handled_addr; | |
7675 | handled_addr = addr; | |
7676 | } | |
7677 | } | |
7678 | ||
8768d548 | 7679 | fputc('\n', fp); |
059ec3d9 PH |
7680 | |
7681 | /* Get the next text, whether we need it or not, so as to be | |
7682 | positioned for the one after. */ | |
7683 | ||
7684 | emf_text = next_emf(emf, US"generated text"); | |
7685 | ||
7686 | /* If there were any file messages passed by the local transports, | |
7687 | include them in the message. Then put the address on the handled chain. | |
7688 | In the case of a batch of addresses that were all sent to the same | |
7689 | transport, the return_file field in all of them will contain the same | |
7690 | fd, and the return_filename field in the *last* one will be set (to the | |
7691 | name of the file). */ | |
7692 | ||
c007c974 | 7693 | if (msgchain) |
059ec3d9 PH |
7694 | { |
7695 | address_item *nextaddr; | |
7696 | ||
c007c974 | 7697 | if (emf_text) |
8768d548 | 7698 | fprintf(fp, "%s", CS emf_text); |
c007c974 | 7699 | else |
8768d548 | 7700 | fprintf(fp, |
059ec3d9 PH |
7701 | "The following text was generated during the delivery " |
7702 | "attempt%s:\n", (filecount > 1)? "s" : ""); | |
7703 | ||
d6c82d7b | 7704 | for (addr = msgchain; addr; addr = nextaddr) |
059ec3d9 PH |
7705 | { |
7706 | FILE *fm; | |
7707 | address_item *topaddr = addr; | |
7708 | ||
7709 | /* List all the addresses that relate to this file */ | |
7710 | ||
8768d548 | 7711 | fputc('\n', fp); |
c007c974 | 7712 | while(addr) /* Insurance */ |
059ec3d9 | 7713 | { |
8768d548 | 7714 | print_address_information(addr, fp, US"------ ", US"\n ", |
059ec3d9 | 7715 | US" ------\n"); |
c007c974 | 7716 | if (addr->return_filename) break; |
059ec3d9 PH |
7717 | addr = addr->next; |
7718 | } | |
8768d548 | 7719 | fputc('\n', fp); |
059ec3d9 PH |
7720 | |
7721 | /* Now copy the file */ | |
7722 | ||
d6c82d7b | 7723 | if (!(fm = Ufopen(addr->return_filename, "rb"))) |
8768d548 | 7724 | fprintf(fp, " +++ Exim error... failed to open text file: %s\n", |
059ec3d9 PH |
7725 | strerror(errno)); |
7726 | else | |
7727 | { | |
8768d548 | 7728 | while ((ch = fgetc(fm)) != EOF) fputc(ch, fp); |
f1e894f3 | 7729 | (void)fclose(fm); |
059ec3d9 PH |
7730 | } |
7731 | Uunlink(addr->return_filename); | |
7732 | ||
7733 | /* Can now add to handled chain, first fishing off the next | |
7734 | address on the msgchain. */ | |
7735 | ||
7736 | nextaddr = addr->next; | |
7737 | addr->next = handled_addr; | |
7738 | handled_addr = topaddr; | |
7739 | } | |
8768d548 | 7740 | fputc('\n', fp); |
059ec3d9 PH |
7741 | } |
7742 | ||
6c1c3d1d | 7743 | /* output machine readable part */ |
8c5d388a | 7744 | #ifdef SUPPORT_I18N |
9671784a | 7745 | if (message_smtputf8) |
8768d548 | 7746 | fprintf(fp, "--%s\n" |
9671784a JH |
7747 | "Content-type: message/global-delivery-status\n\n" |
7748 | "Reporting-MTA: dns; %s\n", | |
7749 | bound, smtp_active_hostname); | |
7750 | else | |
7751 | #endif | |
8768d548 | 7752 | fprintf(fp, "--%s\n" |
9671784a JH |
7753 | "Content-type: message/delivery-status\n\n" |
7754 | "Reporting-MTA: dns; %s\n", | |
7755 | bound, smtp_active_hostname); | |
c007c974 JH |
7756 | |
7757 | if (dsn_envid) | |
7758 | { | |
6c1c3d1d WB |
7759 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
7760 | uschar *xdec_envid; | |
7761 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
8768d548 | 7762 | fprintf(fp, "Original-Envelope-ID: %s\n", dsn_envid); |
6c1c3d1d | 7763 | else |
8768d548 | 7764 | fprintf(fp, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 7765 | } |
8768d548 | 7766 | fputc('\n', fp); |
94431adb | 7767 | |
c007c974 | 7768 | for (addr = handled_addr; addr; addr = addr->next) |
6c1c3d1d | 7769 | { |
895fbaf2 | 7770 | host_item * hu; |
436bda2a JH |
7771 | |
7772 | print_dsn_addr_action(fp, addr, US"failed", US"5.0.0"); | |
7773 | ||
895fbaf2 JH |
7774 | if ((hu = addr->host_used) && hu->name) |
7775 | { | |
8768d548 | 7776 | fprintf(fp, "Remote-MTA: dns; %s\n", hu->name); |
895fbaf2 | 7777 | #ifdef EXPERIMENTAL_DSN_INFO |
0e8aed8a JH |
7778 | { |
7779 | const uschar * s; | |
895fbaf2 JH |
7780 | if (hu->address) |
7781 | { | |
7782 | uschar * p = hu->port == 25 | |
7783 | ? US"" : string_sprintf(":%d", hu->port); | |
8768d548 | 7784 | fprintf(fp, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p); |
895fbaf2 JH |
7785 | } |
7786 | if ((s = addr->smtp_greeting) && *s) | |
8768d548 | 7787 | fprintf(fp, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s); |
895fbaf2 | 7788 | if ((s = addr->helo_response) && *s) |
8768d548 | 7789 | fprintf(fp, "X-Remote-MTA-helo-response: X-str; %s\n", s); |
895fbaf2 | 7790 | if ((s = addr->message) && *s) |
8768d548 | 7791 | fprintf(fp, "X-Exim-Diagnostic: X-str; %s\n", s); |
0e8aed8a | 7792 | } |
895fbaf2 | 7793 | #endif |
8768d548 | 7794 | print_dsn_diagnostic_code(addr, fp); |
895fbaf2 | 7795 | } |
8768d548 | 7796 | fputc('\n', fp); |
6c1c3d1d | 7797 | } |
6c1c3d1d | 7798 | |
059ec3d9 PH |
7799 | /* Now copy the message, trying to give an intelligible comment if |
7800 | it is too long for it all to be copied. The limit isn't strictly | |
7801 | applied because of the buffering. There is, however, an option | |
7802 | to suppress copying altogether. */ | |
7803 | ||
7804 | emf_text = next_emf(emf, US"copy"); | |
7805 | ||
6c1c3d1d | 7806 | /* add message body |
94431adb | 7807 | we ignore the intro text from template and add |
6c1c3d1d | 7808 | the text for bounce_return_size_limit at the end. |
94431adb | 7809 | |
6c1c3d1d WB |
7810 | bounce_return_message is ignored |
7811 | in case RET= is defined we honor these values | |
7812 | otherwise bounce_return_body is honored. | |
94431adb | 7813 | |
6c1c3d1d WB |
7814 | bounce_return_size_limit is always honored. |
7815 | */ | |
94431adb | 7816 | |
8768d548 | 7817 | fprintf(fp, "--%s\n", bound); |
6c1c3d1d | 7818 | |
0f9d3aea JH |
7819 | dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned"; |
7820 | dsnnotifyhdr = NULL; | |
7821 | topt = topt_add_return_path; | |
7822 | ||
6c1c3d1d WB |
7823 | /* RET=HDRS? top priority */ |
7824 | if (dsn_ret == dsn_ret_hdrs) | |
7825 | topt |= topt_no_body; | |
7826 | else | |
62b7cd08 JH |
7827 | { |
7828 | struct stat statbuf; | |
7829 | ||
6c1c3d1d WB |
7830 | /* no full body return at all? */ |
7831 | if (!bounce_return_body) | |
7832 | { | |
7833 | topt |= topt_no_body; | |
7834 | /* add header if we overrule RET=FULL */ | |
7835 | if (dsn_ret == dsn_ret_full) | |
7836 | dsnnotifyhdr = dsnlimitmsg; | |
7837 | } | |
62b7cd08 | 7838 | /* line length limited... return headers only if oversize */ |
6c1c3d1d | 7839 | /* size limited ... return headers only if limit reached */ |
62b7cd08 JH |
7840 | else if ( max_received_linelength > bounce_return_linesize_limit |
7841 | || ( bounce_return_size_limit > 0 | |
7842 | && fstat(deliver_datafile, &statbuf) == 0 | |
7843 | && statbuf.st_size > max | |
7844 | ) ) | |
7845 | { | |
7846 | topt |= topt_no_body; | |
7847 | dsnnotifyhdr = dsnlimitmsg; | |
6c1c3d1d | 7848 | } |
62b7cd08 | 7849 | } |
94431adb | 7850 | |
8c5d388a | 7851 | #ifdef SUPPORT_I18N |
9671784a JH |
7852 | if (message_smtputf8) |
7853 | fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n" | |
7854 | : "Content-type: message/global\n\n", | |
8768d548 | 7855 | fp); |
9671784a JH |
7856 | else |
7857 | #endif | |
7858 | fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n" | |
7859 | : "Content-type: message/rfc822\n\n", | |
8768d548 | 7860 | fp); |
6c1c3d1d | 7861 | |
8768d548 | 7862 | fflush(fp); |
6c1c3d1d WB |
7863 | transport_filter_argv = NULL; /* Just in case */ |
7864 | return_path = sender_address; /* In case not previously set */ | |
6b46ecc6 | 7865 | { /* Dummy transport for headers add */ |
cab0c277 | 7866 | transport_ctx tctx = {{0}}; |
6d5c916c | 7867 | transport_instance tb = {0}; |
6b46ecc6 | 7868 | |
8768d548 | 7869 | tctx.u.fd = fileno(fp); |
6d5c916c JH |
7870 | tctx.tblock = &tb; |
7871 | tctx.options = topt; | |
7872 | tb.add_headers = dsnnotifyhdr; | |
6b46ecc6 | 7873 | |
ee8b8090 | 7874 | /*XXX no checking for failure! buggy! */ |
42055a33 | 7875 | transport_write_message(&tctx, 0); |
6b46ecc6 | 7876 | } |
8768d548 | 7877 | fflush(fp); |
94431adb | 7878 | |
6c1c3d1d | 7879 | /* we never add the final text. close the file */ |
c007c974 | 7880 | if (emf) |
6c1c3d1d | 7881 | (void)fclose(emf); |
94431adb | 7882 | |
8768d548 | 7883 | fprintf(fp, "\n--%s--\n", bound); |
059ec3d9 PH |
7884 | |
7885 | /* Close the file, which should send an EOF to the child process | |
7886 | that is receiving the message. Wait for it to finish. */ | |
7887 | ||
8768d548 | 7888 | (void)fclose(fp); |
059ec3d9 PH |
7889 | rc = child_close(pid, 0); /* Waits for child to close, no timeout */ |
7890 | ||
7891 | /* In the test harness, let the child do it's thing first. */ | |
7892 | ||
9f01e50d | 7893 | testharness_pause_ms(500); |
059ec3d9 PH |
7894 | |
7895 | /* If the process failed, there was some disaster in setting up the | |
7896 | error message. Unless the message is very old, ensure that addr_defer | |
7897 | is non-null, which will have the effect of leaving the message on the | |
7898 | spool. The failed addresses will get tried again next time. However, we | |
7899 | don't really want this to happen too often, so freeze the message unless | |
7900 | there are some genuine deferred addresses to try. To do this we have | |
7901 | to call spool_write_header() here, because with no genuine deferred | |
7902 | addresses the normal code below doesn't get run. */ | |
7903 | ||
7904 | if (rc != 0) | |
7905 | { | |
7906 | uschar *s = US""; | |
32dfdf8b | 7907 | if (now - received_time.tv_sec < retry_maximum_timeout && !addr_defer) |
059ec3d9 PH |
7908 | { |
7909 | addr_defer = (address_item *)(+1); | |
8768d548 | 7910 | f.deliver_freeze = TRUE; |
059ec3d9 PH |
7911 | deliver_frozen_at = time(NULL); |
7912 | /* Panic-dies on error */ | |
7913 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7914 | s = US" (frozen)"; | |
7915 | } | |
7916 | deliver_msglog("Process failed (%d) when writing error message " | |
7917 | "to %s%s", rc, bounce_recipient, s); | |
7918 | log_write(0, LOG_MAIN, "Process failed (%d) when writing error message " | |
7919 | "to %s%s", rc, bounce_recipient, s); | |
7920 | } | |
7921 | ||
7922 | /* The message succeeded. Ensure that the recipients that failed are | |
7923 | now marked finished with on the spool and their parents updated. */ | |
7924 | ||
7925 | else | |
7926 | { | |
d6c82d7b | 7927 | for (addr = handled_addr; addr; addr = addr->next) |
059ec3d9 PH |
7928 | { |
7929 | address_done(addr, logtod); | |
7930 | child_done(addr, logtod); | |
7931 | } | |
7932 | /* Panic-dies on error */ | |
7933 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
7934 | } | |
7935 | } | |
7936 | } | |
7937 | } | |
7938 | ||
8768d548 | 7939 | f.disable_logging = FALSE; /* In case left set */ |
059ec3d9 PH |
7940 | |
7941 | /* Come here from the mua_wrapper case if routing goes wrong */ | |
7942 | ||
7943 | DELIVERY_TIDYUP: | |
7944 | ||
7945 | /* If there are now no deferred addresses, we are done. Preserve the | |
7946 | message log if so configured, and we are using them. Otherwise, sling it. | |
7947 | Then delete the message itself. */ | |
7948 | ||
d6c82d7b | 7949 | if (!addr_defer) |
059ec3d9 | 7950 | { |
41313d92 JH |
7951 | uschar * fname; |
7952 | ||
059ec3d9 PH |
7953 | if (message_logs) |
7954 | { | |
41313d92 | 7955 | fname = spool_fname(US"msglog", message_subdir, id, US""); |
059ec3d9 PH |
7956 | if (preserve_message_logs) |
7957 | { | |
7958 | int rc; | |
41313d92 JH |
7959 | uschar * moname = spool_fname(US"msglog.OLD", US"", id, US""); |
7960 | ||
7961 | if ((rc = Urename(fname, moname)) < 0) | |
059ec3d9 | 7962 | { |
41313d92 JH |
7963 | (void)directory_make(spool_directory, |
7964 | spool_sname(US"msglog.OLD", US""), | |
7965 | MSGLOG_DIRECTORY_MODE, TRUE); | |
7966 | rc = Urename(fname, moname); | |
059ec3d9 PH |
7967 | } |
7968 | if (rc < 0) | |
7969 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the " | |
41313d92 | 7970 | "msglog.OLD directory", fname); |
059ec3d9 PH |
7971 | } |
7972 | else | |
41313d92 | 7973 | if (Uunlink(fname) < 0) |
0761d44e | 7974 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 7975 | fname, strerror(errno)); |
059ec3d9 PH |
7976 | } |
7977 | ||
7978 | /* Remove the two message files. */ | |
8e669ac1 | 7979 | |
41313d92 JH |
7980 | fname = spool_fname(US"input", message_subdir, id, US"-D"); |
7981 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 7982 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 JH |
7983 | fname, strerror(errno)); |
7984 | fname = spool_fname(US"input", message_subdir, id, US"-H"); | |
7985 | if (Uunlink(fname) < 0) | |
0ca0cf52 | 7986 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", |
41313d92 | 7987 | fname, strerror(errno)); |
2ac0e484 PH |
7988 | |
7989 | /* Log the end of this message, with queue time if requested. */ | |
7990 | ||
6c6d6e48 | 7991 | if (LOGGING(queue_time_overall)) |
306c6c77 | 7992 | log_write(0, LOG_MAIN, "Completed QT=%s", string_timesince(&received_time)); |
2ac0e484 PH |
7993 | else |
7994 | log_write(0, LOG_MAIN, "Completed"); | |
0e8a9471 MH |
7995 | |
7996 | /* Unset deliver_freeze so that we won't try to move the spool files further down */ | |
8768d548 | 7997 | f.deliver_freeze = FALSE; |
14a465c3 | 7998 | |
0cbf2b82 | 7999 | #ifndef DISABLE_EVENT |
774ef2d7 | 8000 | (void) event_raise(event_action, US"msg:complete", NULL); |
14a465c3 | 8001 | #endif |
fa41615d | 8002 | } |
059ec3d9 PH |
8003 | |
8004 | /* If there are deferred addresses, we are keeping this message because it is | |
8005 | not yet completed. Lose any temporary files that were catching output from | |
8006 | pipes for any of the deferred addresses, handle one-time aliases, and see if | |
8007 | the message has been on the queue for so long that it is time to send a warning | |
8008 | message to the sender, unless it is a mailer-daemon. If all deferred addresses | |
8009 | have the same domain, we can set deliver_domain for the expansion of | |
8010 | delay_warning_ condition - if any of them are pipes, files, or autoreplies, use | |
8011 | the parent's domain. | |
8012 | ||
8013 | If all the deferred addresses have an error number that indicates "retry time | |
8014 | not reached", skip sending the warning message, because it won't contain the | |
8015 | reason for the delay. It will get sent at the next real delivery attempt. | |
de6f74f2 JH |
8016 | Exception: for retries caused by a remote peer we use the error message |
8017 | store in the retry DB as the reason. | |
059ec3d9 PH |
8018 | However, if at least one address has tried, we'd better include all of them in |
8019 | the message. | |
8020 | ||
8021 | If we can't make a process to send the message, don't worry. | |
8022 | ||
8023 | For mailing list expansions we want to send the warning message to the | |
8024 | mailing list manager. We can't do a perfect job here, as some addresses may | |
8025 | have different errors addresses, but if we take the errors address from | |
8026 | each deferred address it will probably be right in most cases. | |
8027 | ||
8028 | If addr_defer == +1, it means there was a problem sending an error message | |
8029 | for failed addresses, and there were no "real" deferred addresses. The value | |
8030 | was set just to keep the message on the spool, so there is nothing to do here. | |
8031 | */ | |
8032 | ||
8033 | else if (addr_defer != (address_item *)(+1)) | |
8034 | { | |
059ec3d9 | 8035 | uschar *recipients = US""; |
de6f74f2 | 8036 | BOOL want_warning_msg = FALSE; |
059ec3d9 | 8037 | |
d6c82d7b JH |
8038 | deliver_domain = testflag(addr_defer, af_pfr) |
8039 | ? addr_defer->parent->domain : addr_defer->domain; | |
059ec3d9 | 8040 | |
d7978c0f | 8041 | for (address_item * addr = addr_defer; addr; addr = addr->next) |
059ec3d9 PH |
8042 | { |
8043 | address_item *otaddr; | |
8044 | ||
de6f74f2 | 8045 | if (addr->basic_errno > ERRNO_WARN_BASE) want_warning_msg = TRUE; |
059ec3d9 | 8046 | |
d6c82d7b | 8047 | if (deliver_domain) |
059ec3d9 | 8048 | { |
55414b25 JH |
8049 | const uschar *d = testflag(addr, af_pfr) |
8050 | ? addr->parent->domain : addr->domain; | |
059ec3d9 PH |
8051 | |
8052 | /* The domain may be unset for an address that has never been routed | |
8053 | because the system filter froze the message. */ | |
8054 | ||
d6c82d7b JH |
8055 | if (!d || Ustrcmp(d, deliver_domain) != 0) |
8056 | deliver_domain = NULL; | |
059ec3d9 PH |
8057 | } |
8058 | ||
d6c82d7b | 8059 | if (addr->return_filename) Uunlink(addr->return_filename); |
059ec3d9 PH |
8060 | |
8061 | /* Handle the case of one-time aliases. If any address in the ancestry | |
8062 | of this one is flagged, ensure it is in the recipients list, suitably | |
8063 | flagged, and that its parent is marked delivered. */ | |
8064 | ||
d6c82d7b JH |
8065 | for (otaddr = addr; otaddr; otaddr = otaddr->parent) |
8066 | if (otaddr->onetime_parent) break; | |
059ec3d9 | 8067 | |
d6c82d7b | 8068 | if (otaddr) |
059ec3d9 PH |
8069 | { |
8070 | int i; | |
8071 | int t = recipients_count; | |
8072 | ||
8073 | for (i = 0; i < recipients_count; i++) | |
8074 | { | |
8075 | uschar *r = recipients_list[i].address; | |
8076 | if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i; | |
8077 | if (Ustrcmp(otaddr->address, r) == 0) break; | |
8078 | } | |
8079 | ||
8080 | /* Didn't find the address already in the list, and did find the | |
d1f9fb42 JH |
8081 | ultimate parent's address in the list, and they really are different |
8082 | (i.e. not from an identity-redirect). After adding the recipient, | |
059ec3d9 PH |
8083 | update the errors address in the recipients list. */ |
8084 | ||
d1f9fb42 JH |
8085 | if ( i >= recipients_count && t < recipients_count |
8086 | && Ustrcmp(otaddr->address, otaddr->parent->address) != 0) | |
059ec3d9 PH |
8087 | { |
8088 | DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n", | |
8089 | otaddr->address, otaddr->parent->address); | |
8090 | receive_add_recipient(otaddr->address, t); | |
d43cbe25 | 8091 | recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address; |
059ec3d9 PH |
8092 | tree_add_nonrecipient(otaddr->parent->address); |
8093 | update_spool = TRUE; | |
8094 | } | |
8095 | } | |
8096 | ||
8097 | /* Except for error messages, ensure that either the errors address for | |
8098 | this deferred address or, if there is none, the sender address, is on the | |
8099 | list of recipients for a warning message. */ | |
8100 | ||
d1f9fb42 JH |
8101 | if (sender_address[0]) |
8102 | { | |
8103 | uschar * s = addr->prop.errors_address; | |
8104 | if (!s) s = sender_address; | |
8105 | if (Ustrstr(recipients, s) == NULL) | |
8106 | recipients = string_sprintf("%s%s%s", recipients, | |
8107 | recipients[0] ? "," : "", s); | |
8108 | } | |
059ec3d9 PH |
8109 | } |
8110 | ||
8111 | /* Send a warning message if the conditions are right. If the condition check | |
8112 | fails because of a lookup defer, there is nothing we can do. The warning | |
8113 | is not sent. Another attempt will be made at the next delivery attempt (if | |
8114 | it also defers). */ | |
8115 | ||
8768d548 | 8116 | if ( !f.queue_2stage |
de6f74f2 | 8117 | && want_warning_msg |
ea97267c JH |
8118 | && ( !(addr_defer->dsn_flags & rf_dsnflags) |
8119 | || addr_defer->dsn_flags & rf_notify_delay | |
50dc7409 JH |
8120 | ) |
8121 | && delay_warning[1] > 0 | |
8122 | && sender_address[0] != 0 | |
d6c82d7b | 8123 | && ( !delay_warning_condition |
50dc7409 JH |
8124 | || expand_check_condition(delay_warning_condition, |
8125 | US"delay_warning", US"option") | |
8126 | ) | |
8127 | ) | |
059ec3d9 PH |
8128 | { |
8129 | int count; | |
8130 | int show_time; | |
32dfdf8b | 8131 | int queue_time = time(NULL) - received_time.tv_sec; |
059ec3d9 PH |
8132 | |
8133 | /* When running in the test harness, there's an option that allows us to | |
8134 | fudge this time so as to get repeatability of the tests. Take the first | |
8135 | time off the list. In queue runs, the list pointer gets updated in the | |
8136 | calling process. */ | |
8137 | ||
8768d548 | 8138 | if (f.running_in_test_harness && fudged_queue_times[0] != 0) |
059ec3d9 PH |
8139 | { |
8140 | int qt = readconf_readtime(fudged_queue_times, '/', FALSE); | |
8141 | if (qt >= 0) | |
8142 | { | |
8143 | DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n", | |
8144 | fudged_queue_times); | |
8145 | queue_time = qt; | |
8146 | } | |
8147 | } | |
8148 | ||
8149 | /* See how many warnings we should have sent by now */ | |
8150 | ||
8151 | for (count = 0; count < delay_warning[1]; count++) | |
8152 | if (queue_time < delay_warning[count+2]) break; | |
8153 | ||
8154 | show_time = delay_warning[count+1]; | |
8155 | ||
8156 | if (count >= delay_warning[1]) | |
8157 | { | |
8158 | int extra; | |
8159 | int last_gap = show_time; | |
8160 | if (count > 1) last_gap -= delay_warning[count]; | |
8161 | extra = (queue_time - delay_warning[count+1])/last_gap; | |
8162 | show_time += last_gap * extra; | |
8163 | count += extra; | |
8164 | } | |
8165 | ||
8166 | DEBUG(D_deliver) | |
8167 | { | |
d6c829b9 JH |
8168 | debug_printf("time on queue = %s id %s addr %s\n", |
8169 | readconf_printtime(queue_time), message_id, addr_defer->address); | |
059ec3d9 PH |
8170 | debug_printf("warning counts: required %d done %d\n", count, |
8171 | warning_count); | |
8172 | } | |
8173 | ||
8174 | /* We have computed the number of warnings there should have been by now. | |
8175 | If there haven't been enough, send one, and up the count to what it should | |
8176 | have been. */ | |
8177 | ||
8178 | if (warning_count < count) | |
8179 | { | |
8180 | header_line *h; | |
8181 | int fd; | |
8182 | pid_t pid = child_open_exim(&fd); | |
8183 | ||
8184 | if (pid > 0) | |
8185 | { | |
8186 | uschar *wmf_text; | |
8187 | FILE *wmf = NULL; | |
8188 | FILE *f = fdopen(fd, "wb"); | |
45500060 | 8189 | uschar * bound; |
cab0c277 | 8190 | transport_ctx tctx = {{0}}; |
059ec3d9 | 8191 | |
c007c974 | 8192 | if (warn_message_file) |
d6c82d7b | 8193 | if (!(wmf = Ufopen(warn_message_file, "rb"))) |
059ec3d9 PH |
8194 | log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning " |
8195 | "message texts: %s", warn_message_file, strerror(errno)); | |
059ec3d9 PH |
8196 | |
8197 | warnmsg_recipients = recipients; | |
d6c82d7b JH |
8198 | warnmsg_delay = queue_time < 120*60 |
8199 | ? string_sprintf("%d minutes", show_time/60) | |
8200 | : string_sprintf("%d hours", show_time/3600); | |
059ec3d9 | 8201 | |
c007c974 | 8202 | if (errors_reply_to) |
059ec3d9 | 8203 | fprintf(f, "Reply-To: %s\n", errors_reply_to); |
456682f5 | 8204 | fprintf(f, "Auto-Submitted: auto-replied\n"); |
0e22dfd1 | 8205 | moan_write_from(f); |
059ec3d9 | 8206 | fprintf(f, "To: %s\n", recipients); |
d6c829b9 | 8207 | moan_write_references(f, NULL); |
059ec3d9 | 8208 | |
6c1c3d1d | 8209 | /* generated boundary string and output MIME-Headers */ |
45500060 | 8210 | bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand()); |
c007c974 JH |
8211 | |
8212 | fprintf(f, "Content-Type: multipart/report;" | |
8213 | " report-type=delivery-status; boundary=%s\n" | |
8214 | "MIME-Version: 1.0\n", | |
45500060 | 8215 | bound); |
6c1c3d1d | 8216 | |
c007c974 | 8217 | if ((wmf_text = next_emf(wmf, US"header"))) |
059ec3d9 PH |
8218 | fprintf(f, "%s\n", wmf_text); |
8219 | else | |
8220 | fprintf(f, "Subject: Warning: message %s delayed %s\n\n", | |
8221 | message_id, warnmsg_delay); | |
8222 | ||
6c1c3d1d | 8223 | /* output human readable part as text/plain section */ |
c007c974 JH |
8224 | fprintf(f, "--%s\n" |
8225 | "Content-type: text/plain; charset=us-ascii\n\n", | |
45500060 | 8226 | bound); |
6c1c3d1d | 8227 | |
c007c974 JH |
8228 | if ((wmf_text = next_emf(wmf, US"intro"))) |
8229 | fprintf(f, "%s", CS wmf_text); | |
8230 | else | |
059ec3d9 PH |
8231 | { |
8232 | fprintf(f, | |
8233 | "This message was created automatically by mail delivery software.\n"); | |
8234 | ||
8235 | if (Ustrcmp(recipients, sender_address) == 0) | |
8236 | fprintf(f, | |
8237 | "A message that you sent has not yet been delivered to one or more of its\n" | |
8238 | "recipients after more than "); | |
8239 | ||
c007c974 JH |
8240 | else |
8241 | fprintf(f, | |
059ec3d9 PH |
8242 | "A message sent by\n\n <%s>\n\n" |
8243 | "has not yet been delivered to one or more of its recipients after more than \n", | |
c007c974 | 8244 | sender_address); |
059ec3d9 | 8245 | |
c007c974 JH |
8246 | fprintf(f, "%s on the queue on %s.\n\n" |
8247 | "The message identifier is: %s\n", | |
8248 | warnmsg_delay, primary_hostname, message_id); | |
059ec3d9 | 8249 | |
d6c82d7b | 8250 | for (h = header_list; h; h = h->next) |
059ec3d9 PH |
8251 | if (strncmpic(h->text, US"Subject:", 8) == 0) |
8252 | fprintf(f, "The subject of the message is: %s", h->text + 9); | |
8253 | else if (strncmpic(h->text, US"Date:", 5) == 0) | |
8254 | fprintf(f, "The date of the message is: %s", h->text + 6); | |
c007c974 | 8255 | fputc('\n', f); |
059ec3d9 PH |
8256 | |
8257 | fprintf(f, "The address%s to which the message has not yet been " | |
8258 | "delivered %s:\n", | |
c007c974 JH |
8259 | !addr_defer->next ? "" : "es", |
8260 | !addr_defer->next ? "is": "are"); | |
059ec3d9 PH |
8261 | } |
8262 | ||
447d236c | 8263 | /* List the addresses, with error information if allowed */ |
059ec3d9 | 8264 | |
c007c974 | 8265 | fputc('\n', f); |
81a559c8 | 8266 | for (address_item * addr = addr_defer; addr; addr = addr->next) |
059ec3d9 | 8267 | { |
447d236c PH |
8268 | if (print_address_information(addr, f, US" ", US"\n ", US"")) |
8269 | print_address_error(addr, f, US"Delay reason: "); | |
c007c974 | 8270 | fputc('\n', f); |
059ec3d9 | 8271 | } |
c007c974 | 8272 | fputc('\n', f); |
059ec3d9 PH |
8273 | |
8274 | /* Final text */ | |
8275 | ||
c007c974 | 8276 | if (wmf) |
059ec3d9 | 8277 | { |
c007c974 JH |
8278 | if ((wmf_text = next_emf(wmf, US"final"))) |
8279 | fprintf(f, "%s", CS wmf_text); | |
f1e894f3 | 8280 | (void)fclose(wmf); |
059ec3d9 PH |
8281 | } |
8282 | else | |
8283 | { | |
8284 | fprintf(f, | |
8285 | "No action is required on your part. Delivery attempts will continue for\n" | |
8286 | "some time, and this warning may be repeated at intervals if the message\n" | |
8287 | "remains undelivered. Eventually the mail delivery software will give up,\n" | |
8288 | "and when that happens, the message will be returned to you.\n"); | |
8289 | } | |
8290 | ||
6c1c3d1d | 8291 | /* output machine readable part */ |
c007c974 JH |
8292 | fprintf(f, "\n--%s\n" |
8293 | "Content-type: message/delivery-status\n\n" | |
8294 | "Reporting-MTA: dns; %s\n", | |
45500060 | 8295 | bound, |
c007c974 | 8296 | smtp_active_hostname); |
94431adb | 8297 | |
c007c974 JH |
8298 | |
8299 | if (dsn_envid) | |
8300 | { | |
6c1c3d1d WB |
8301 | /* must be decoded from xtext: see RFC 3461:6.3a */ |
8302 | uschar *xdec_envid; | |
8303 | if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0) | |
8304 | fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid); | |
8305 | else | |
968178ac | 8306 | fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n"); |
6c1c3d1d | 8307 | } |
c007c974 | 8308 | fputc('\n', f); |
6c1c3d1d | 8309 | |
81a559c8 | 8310 | for (address_item * addr = addr_defer; addr; addr = addr->next) |
6c1c3d1d | 8311 | { |
436bda2a JH |
8312 | host_item * hu; |
8313 | ||
81a559c8 | 8314 | print_dsn_addr_action(f, addr, US"delayed", US"4.0.0"); |
436bda2a | 8315 | |
81a559c8 | 8316 | if ((hu = addr->host_used) && hu->name) |
21bc4865 | 8317 | { |
436bda2a | 8318 | fprintf(f, "Remote-MTA: dns; %s\n", hu->name); |
81a559c8 | 8319 | print_dsn_diagnostic_code(addr, f); |
21bc4865 | 8320 | } |
1c5b1499 | 8321 | fputc('\n', f); |
6c1c3d1d WB |
8322 | } |
8323 | ||
1c5b1499 | 8324 | fprintf(f, "--%s\n" |
c007c974 | 8325 | "Content-type: text/rfc822-headers\n\n", |
45500060 | 8326 | bound); |
6c1c3d1d WB |
8327 | |
8328 | fflush(f); | |
8329 | /* header only as required by RFC. only failure DSN needs to honor RET=FULL */ | |
42055a33 | 8330 | tctx.u.fd = fileno(f); |
6b46ecc6 | 8331 | tctx.options = topt_add_return_path | topt_no_body; |
6c1c3d1d WB |
8332 | transport_filter_argv = NULL; /* Just in case */ |
8333 | return_path = sender_address; /* In case not previously set */ | |
6b46ecc6 | 8334 | |
6c1c3d1d | 8335 | /* Write the original email out */ |
ee8b8090 | 8336 | /*XXX no checking for failure! buggy! */ |
42055a33 | 8337 | transport_write_message(&tctx, 0); |
6c1c3d1d WB |
8338 | fflush(f); |
8339 | ||
45500060 | 8340 | fprintf(f,"\n--%s--\n", bound); |
6c1c3d1d WB |
8341 | |
8342 | fflush(f); | |
6c1c3d1d | 8343 | |
059ec3d9 PH |
8344 | /* Close and wait for child process to complete, without a timeout. |
8345 | If there's an error, don't update the count. */ | |
8346 | ||
f1e894f3 | 8347 | (void)fclose(f); |
059ec3d9 PH |
8348 | if (child_close(pid, 0) == 0) |
8349 | { | |
8350 | warning_count = count; | |
8351 | update_spool = TRUE; /* Ensure spool rewritten */ | |
8352 | } | |
8353 | } | |
8354 | } | |
8355 | } | |
8356 | ||
8357 | /* Clear deliver_domain */ | |
8358 | ||
8359 | deliver_domain = NULL; | |
8360 | ||
8361 | /* If this was a first delivery attempt, unset the first time flag, and | |
8362 | ensure that the spool gets updated. */ | |
8363 | ||
8768d548 | 8364 | if (f.deliver_firsttime) |
059ec3d9 | 8365 | { |
8768d548 | 8366 | f.deliver_firsttime = FALSE; |
059ec3d9 PH |
8367 | update_spool = TRUE; |
8368 | } | |
8369 | ||
8370 | /* If delivery was frozen and freeze_tell is set, generate an appropriate | |
8371 | message, unless the message is a local error message (to avoid loops). Then | |
8372 | log the freezing. If the text in "frozen_info" came from a system filter, | |
8373 | it has been escaped into printing characters so as not to mess up log lines. | |
8374 | For the "tell" message, we turn \n back into newline. Also, insert a newline | |
8375 | near the start instead of the ": " string. */ | |
8376 | ||
8768d548 | 8377 | if (f.deliver_freeze) |
059ec3d9 | 8378 | { |
8768d548 | 8379 | if (freeze_tell && freeze_tell[0] != 0 && !f.local_error_message) |
059ec3d9 PH |
8380 | { |
8381 | uschar *s = string_copy(frozen_info); | |
8382 | uschar *ss = Ustrstr(s, " by the system filter: "); | |
8383 | ||
8384 | if (ss != NULL) | |
8385 | { | |
8386 | ss[21] = '.'; | |
8387 | ss[22] = '\n'; | |
8388 | } | |
8389 | ||
8390 | ss = s; | |
8391 | while (*ss != 0) | |
8392 | { | |
8393 | if (*ss == '\\' && ss[1] == 'n') | |
8394 | { | |
8395 | *ss++ = ' '; | |
8396 | *ss++ = '\n'; | |
8397 | } | |
8398 | else ss++; | |
8399 | } | |
8400 | moan_tell_someone(freeze_tell, addr_defer, US"Message frozen", | |
8401 | "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id, | |
8402 | s, sender_address); | |
8403 | } | |
8404 | ||
8405 | /* Log freezing just before we update the -H file, to minimize the chance | |
8406 | of a race problem. */ | |
8407 | ||
8408 | deliver_msglog("*** Frozen%s\n", frozen_info); | |
8409 | log_write(0, LOG_MAIN, "Frozen%s", frozen_info); | |
8410 | } | |
8411 | ||
8412 | /* If there have been any updates to the non-recipients list, or other things | |
8413 | that get written to the spool, we must now update the spool header file so | |
8414 | that it has the right information for the next delivery attempt. If there | |
8415 | was more than one address being delivered, the header_change update is done | |
8416 | earlier, in case one succeeds and then something crashes. */ | |
8417 | ||
8418 | DEBUG(D_deliver) | |
8419 | debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n", | |
8768d548 | 8420 | update_spool, f.header_rewritten); |
059ec3d9 | 8421 | |
8768d548 | 8422 | if (update_spool || f.header_rewritten) |
059ec3d9 PH |
8423 | /* Panic-dies on error */ |
8424 | (void)spool_write_header(message_id, SW_DELIVERING, NULL); | |
8425 | } | |
8426 | ||
8427 | /* Finished with the message log. If the message is complete, it will have | |
8428 | been unlinked or renamed above. */ | |
8429 | ||
f1e894f3 | 8430 | if (message_logs) (void)fclose(message_log); |
059ec3d9 PH |
8431 | |
8432 | /* Now we can close and remove the journal file. Its only purpose is to record | |
8433 | successfully completed deliveries asap so that this information doesn't get | |
8434 | lost if Exim (or the machine) crashes. Forgetting about a failed delivery is | |
8435 | not serious, as trying it again is not harmful. The journal might not be open | |
8436 | if all addresses were deferred at routing or directing. Nevertheless, we must | |
8437 | remove it if it exists (may have been lying around from a crash during the | |
8438 | previous delivery attempt). We don't remove the journal if a delivery | |
8439 | subprocess failed to pass back delivery information; this is controlled by | |
8440 | the remove_journal flag. When the journal is left, we also don't move the | |
8441 | message off the main spool if frozen and the option is set. It should get moved | |
8442 | at the next attempt, after the journal has been inspected. */ | |
8443 | ||
f1e894f3 | 8444 | if (journal_fd >= 0) (void)close(journal_fd); |
059ec3d9 PH |
8445 | |
8446 | if (remove_journal) | |
8447 | { | |
41313d92 JH |
8448 | uschar * fname = spool_fname(US"input", message_subdir, id, US"-J"); |
8449 | ||
8450 | if (Uunlink(fname) < 0 && errno != ENOENT) | |
8451 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", fname, | |
059ec3d9 PH |
8452 | strerror(errno)); |
8453 | ||
4c04137d | 8454 | /* Move the message off the spool if requested */ |
059ec3d9 | 8455 | |
a7538db1 | 8456 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
8768d548 | 8457 | if (f.deliver_freeze && move_frozen_messages) |
059ec3d9 | 8458 | (void)spool_move_message(id, message_subdir, US"", US"F"); |
a7538db1 | 8459 | #endif |
059ec3d9 PH |
8460 | } |
8461 | ||
8462 | /* Closing the data file frees the lock; if the file has been unlinked it | |
8463 | will go away. Otherwise the message becomes available for another process | |
8464 | to try delivery. */ | |
8465 | ||
f1e894f3 | 8466 | (void)close(deliver_datafile); |
059ec3d9 PH |
8467 | deliver_datafile = -1; |
8468 | DEBUG(D_deliver) debug_printf("end delivery of %s\n", id); | |
9f01e50d JH |
8469 | #ifdef MEASURE_TIMING |
8470 | report_time_since(×tamp_startup, US"delivery end"); /* testcase 0005 */ | |
8471 | #endif | |
059ec3d9 PH |
8472 | |
8473 | /* It is unlikely that there will be any cached resources, since they are | |
8474 | released after routing, and in the delivery subprocesses. However, it's | |
8475 | possible for an expansion for something afterwards (for example, | |
8476 | expand_check_condition) to do a lookup. We must therefore be sure everything is | |
8477 | released. */ | |
8478 | ||
8479 | search_tidyup(); | |
faa05a93 | 8480 | acl_where = ACL_WHERE_UNKNOWN; |
059ec3d9 PH |
8481 | return final_yield; |
8482 | } | |
8483 | ||
476be7e2 JH |
8484 | |
8485 | ||
8486 | void | |
8487 | deliver_init(void) | |
8488 | { | |
10ac8d7f JH |
8489 | #ifdef EXIM_TFO_PROBE |
8490 | tfo_probe(); | |
8491 | #else | |
8768d548 | 8492 | f.tcp_fastopen_ok = TRUE; |
10ac8d7f JH |
8493 | #endif |
8494 | ||
8495 | ||
476be7e2 JH |
8496 | if (!regex_PIPELINING) regex_PIPELINING = |
8497 | regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE); | |
8498 | ||
8499 | if (!regex_SIZE) regex_SIZE = | |
8500 | regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE); | |
8501 | ||
8502 | if (!regex_AUTH) regex_AUTH = | |
ee8b8090 | 8503 | regex_must_compile(AUTHS_REGEX, FALSE, TRUE); |
476be7e2 | 8504 | |
01603eec | 8505 | #ifndef DISABLE_TLS |
476be7e2 JH |
8506 | if (!regex_STARTTLS) regex_STARTTLS = |
8507 | regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE); | |
8508 | #endif | |
8509 | ||
f98442df JH |
8510 | if (!regex_CHUNKING) regex_CHUNKING = |
8511 | regex_must_compile(US"\\n250[\\s\\-]CHUNKING(\\s|\\n|$)", FALSE, TRUE); | |
8512 | ||
476be7e2 JH |
8513 | #ifndef DISABLE_PRDR |
8514 | if (!regex_PRDR) regex_PRDR = | |
8515 | regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE); | |
8516 | #endif | |
8517 | ||
8c5d388a | 8518 | #ifdef SUPPORT_I18N |
7ade712c JH |
8519 | if (!regex_UTF8) regex_UTF8 = |
8520 | regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE); | |
8521 | #endif | |
8522 | ||
476be7e2 JH |
8523 | if (!regex_DSN) regex_DSN = |
8524 | regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE); | |
8525 | ||
8526 | if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA = | |
8527 | regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE); | |
ee8b8090 | 8528 | |
4e48d56c | 8529 | #ifdef SUPPORT_PIPE_CONNECT |
ee8b8090 JH |
8530 | if (!regex_EARLY_PIPE) regex_EARLY_PIPE = |
8531 | regex_must_compile(US"\\n250[\\s\\-]" EARLY_PIPE_FEATURE_NAME "(\\s|\\n|$)", FALSE, TRUE); | |
8532 | #endif | |
476be7e2 JH |
8533 | } |
8534 | ||
8535 | ||
a39bd74d JB |
8536 | uschar * |
8537 | deliver_get_sender_address (uschar * id) | |
8538 | { | |
dadff1d4 HSHR |
8539 | int rc; |
8540 | uschar * new_sender_address, | |
8541 | * save_sender_address; | |
8768d548 | 8542 | BOOL save_qr = f.queue_running; |
41313d92 | 8543 | uschar * spoolname; |
dadff1d4 | 8544 | |
789f8a4f JH |
8545 | /* make spool_open_datafile non-noisy on fail */ |
8546 | ||
8768d548 | 8547 | f.queue_running = TRUE; |
789f8a4f JH |
8548 | |
8549 | /* Side effect: message_subdir is set for the (possibly split) spool directory */ | |
8550 | ||
8551 | deliver_datafile = spool_open_datafile(id); | |
8768d548 | 8552 | f.queue_running = save_qr; |
789f8a4f | 8553 | if (deliver_datafile < 0) |
a39bd74d JB |
8554 | return NULL; |
8555 | ||
dadff1d4 HSHR |
8556 | /* Save and restore the global sender_address. I'm not sure if we should |
8557 | not save/restore all the other global variables too, because | |
8558 | spool_read_header() may change all of them. But OTOH, when this | |
8559 | deliver_get_sender_address() gets called, the current message is done | |
8560 | already and nobody needs the globals anymore. (HS12, 2015-08-21) */ | |
8561 | ||
41313d92 | 8562 | spoolname = string_sprintf("%s-H", id); |
dadff1d4 HSHR |
8563 | save_sender_address = sender_address; |
8564 | ||
8565 | rc = spool_read_header(spoolname, TRUE, TRUE); | |
8566 | ||
8567 | new_sender_address = sender_address; | |
8568 | sender_address = save_sender_address; | |
8569 | ||
8570 | if (rc != spool_read_OK) | |
a39bd74d JB |
8571 | return NULL; |
8572 | ||
dadff1d4 HSHR |
8573 | assert(new_sender_address); |
8574 | ||
a39bd74d JB |
8575 | (void)close(deliver_datafile); |
8576 | deliver_datafile = -1; | |
8577 | ||
dadff1d4 | 8578 | return new_sender_address; |
a39bd74d JB |
8579 | } |
8580 | ||
57cc2785 JH |
8581 | |
8582 | ||
8583 | void | |
8584 | delivery_re_exec(int exec_type) | |
8585 | { | |
cab0c277 | 8586 | uschar * where; |
57cc2785 | 8587 | |
74f1a423 | 8588 | if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only) |
57cc2785 | 8589 | { |
48334568 | 8590 | int channel_fd = cutthrough.cctx.sock; |
57cc2785 JH |
8591 | |
8592 | smtp_peer_options = cutthrough.peer_options; | |
8593 | continue_sequence = 0; | |
8594 | ||
01603eec | 8595 | #ifndef DISABLE_TLS |
57cc2785 JH |
8596 | if (cutthrough.is_tls) |
8597 | { | |
48334568 JH |
8598 | int pfd[2], pid; |
8599 | ||
14de8063 | 8600 | smtp_peer_options |= OPTION_TLS; |
57cc2785 JH |
8601 | sending_ip_address = cutthrough.snd_ip; |
8602 | sending_port = cutthrough.snd_port; | |
8603 | ||
cab0c277 | 8604 | where = US"socketpair"; |
57cc2785 JH |
8605 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) != 0) |
8606 | goto fail; | |
8607 | ||
cab0c277 | 8608 | where = US"fork"; |
57cc2785 JH |
8609 | if ((pid = fork()) < 0) |
8610 | goto fail; | |
8611 | ||
6c454556 | 8612 | else if (pid == 0) /* child: fork again to totally disconnect */ |
5facbeaa | 8613 | { |
9f01e50d | 8614 | testharness_pause_ms(100); /* let parent debug out */ |
d097cc73 | 8615 | /* does not return */ |
74f1a423 JH |
8616 | smtp_proxy_tls(cutthrough.cctx.tls_ctx, big_buffer, big_buffer_size, |
8617 | pfd, 5*60); | |
5facbeaa | 8618 | } |
57cc2785 | 8619 | |
d097cc73 | 8620 | DEBUG(D_transport) debug_printf("proxy-proc inter-pid %d\n", pid); |
e47252f5 | 8621 | close(pfd[0]); |
60272099 | 8622 | waitpid(pid, NULL, 0); |
57cc2785 JH |
8623 | (void) close(channel_fd); /* release the client socket */ |
8624 | channel_fd = pfd[1]; | |
8625 | } | |
8626 | #endif | |
8627 | ||
8628 | transport_do_pass_socket(cutthrough.transport, cutthrough.host.name, | |
8629 | cutthrough.host.address, message_id, channel_fd); | |
8630 | } | |
8631 | else | |
8632 | { | |
ef698bf6 | 8633 | cancel_cutthrough_connection(TRUE, US"non-continued delivery"); |
57cc2785 JH |
8634 | (void) child_exec_exim(exec_type, FALSE, NULL, FALSE, 2, US"-Mc", message_id); |
8635 | } | |
cab0c277 | 8636 | return; /* compiler quietening; control does not reach here. */ |
57cc2785 | 8637 | |
01603eec | 8638 | #ifndef DISABLE_TLS |
57cc2785 JH |
8639 | fail: |
8640 | log_write(0, | |
8641 | LOG_MAIN | (exec_type == CEE_EXEC_EXIT ? LOG_PANIC : LOG_PANIC_DIE), | |
cab0c277 | 8642 | "delivery re-exec %s failed: %s", where, strerror(errno)); |
57cc2785 JH |
8643 | |
8644 | /* Get here if exec_type == CEE_EXEC_EXIT. | |
8645 | Note: this must be _exit(), not exit(). */ | |
8646 | ||
8647 | _exit(EX_EXECFAILED); | |
13c7874e | 8648 | #endif |
57cc2785 JH |
8649 | } |
8650 | ||
67d81c10 JH |
8651 | /* vi: aw ai sw=2 |
8652 | */ | |
059ec3d9 | 8653 | /* End of deliver.c */ |