Add debug for number of CA certs, for OpenSSL/file load
[exim.git] / src / src / deliver.c
CommitLineData
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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
5a66c31b 5/* Copyright (c) University of Cambridge 1995 - 2014 */
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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"
12
13
14/* Data block for keeping track of subprocesses for parallel remote
15delivery. */
16
17typedef struct pardata {
18 address_item *addrlist; /* chain of addresses */
19 address_item *addr; /* next address data expected for */
20 pid_t pid; /* subprocess pid */
21 int fd; /* pipe fd for getting result from subprocess */
22 int transport_count; /* returned transport count value */
23 BOOL done; /* no more data needed */
24 uschar *msg; /* error message */
25 uschar *return_path; /* return_path for these addresses */
26} pardata;
27
28/* Values for the process_recipients variable */
29
30enum { RECIP_ACCEPT, RECIP_IGNORE, RECIP_DEFER,
31 RECIP_FAIL, RECIP_FAIL_FILTER, RECIP_FAIL_TIMEOUT,
32 RECIP_FAIL_LOOP};
33
34/* Mutually recursive functions for marking addresses done. */
35
36static void child_done(address_item *, uschar *);
37static void address_done(address_item *, uschar *);
38
39/* Table for turning base-62 numbers into binary */
40
41static uschar tab62[] =
42 {0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, /* 0-9 */
43 0,10,11,12,13,14,15,16,17,18,19,20, /* A-K */
44 21,22,23,24,25,26,27,28,29,30,31,32, /* L-W */
45 33,34,35, 0, 0, 0, 0, 0, /* X-Z */
46 0,36,37,38,39,40,41,42,43,44,45,46, /* a-k */
47 47,48,49,50,51,52,53,54,55,56,57,58, /* l-w */
48 59,60,61}; /* x-z */
49
50
51/*************************************************
52* Local static variables *
53*************************************************/
54
55/* addr_duplicate is global because it needs to be seen from the Envelope-To
56writing code. */
57
58static address_item *addr_defer = NULL;
59static address_item *addr_failed = NULL;
60static address_item *addr_fallback = NULL;
61static address_item *addr_local = NULL;
62static address_item *addr_new = NULL;
63static address_item *addr_remote = NULL;
64static address_item *addr_route = NULL;
65static address_item *addr_succeed = NULL;
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66#ifdef EXPERIMENTAL_DSN
67static address_item *addr_dsntmp = NULL;
68static address_item *addr_senddsn = NULL;
69#endif
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70
71static FILE *message_log = NULL;
72static BOOL update_spool;
73static BOOL remove_journal;
74static int parcount = 0;
75static pardata *parlist = NULL;
76static int return_count;
77static uschar *frozen_info = US"";
78static uschar *used_return_path = NULL;
79
80static uschar spoolname[PATH_MAX];
81
82
83
84/*************************************************
85* Make a new address item *
86*************************************************/
87
88/* This function gets the store and initializes with default values. The
89transport_return value defaults to DEFER, so that any unexpected failure to
90deliver does not wipe out the message. The default unique string is set to a
91copy of the address, so that its domain can be lowercased.
92
93Argument:
94 address the RFC822 address string
95 copy force a copy of the address
96
97Returns: a pointer to an initialized address_item
98*/
99
100address_item *
101deliver_make_addr(uschar *address, BOOL copy)
102{
103address_item *addr = store_get(sizeof(address_item));
104*addr = address_defaults;
105if (copy) address = string_copy(address);
106addr->address = address;
107addr->unique = string_copy(address);
108return addr;
109}
110
111
112
113
114/*************************************************
115* Set expansion values for an address *
116*************************************************/
117
118/* Certain expansion variables are valid only when handling an address or
119address list. This function sets them up or clears the values, according to its
120argument.
121
122Arguments:
123 addr the address in question, or NULL to clear values
124Returns: nothing
125*/
126
127void
128deliver_set_expansions(address_item *addr)
129{
130if (addr == NULL)
131 {
132 uschar ***p = address_expansions;
133 while (*p != NULL) **p++ = NULL;
134 return;
135 }
136
137/* Exactly what gets set depends on whether there is one or more addresses, and
138what they contain. These first ones are always set, taking their values from
139the first address. */
140
141if (addr->host_list == NULL)
142 {
143 deliver_host = deliver_host_address = US"";
a7538db1 144 deliver_host_port = 0;
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145 }
146else
147 {
148 deliver_host = addr->host_list->name;
149 deliver_host_address = addr->host_list->address;
a7538db1 150 deliver_host_port = addr->host_list->port;
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151 }
152
153deliver_recipients = addr;
154deliver_address_data = addr->p.address_data;
155deliver_domain_data = addr->p.domain_data;
156deliver_localpart_data = addr->p.localpart_data;
157
158/* These may be unset for multiple addresses */
159
160deliver_domain = addr->domain;
161self_hostname = addr->self_hostname;
162
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163#ifdef EXPERIMENTAL_BRIGHTMAIL
164bmi_deliver = 1; /* deliver by default */
165bmi_alt_location = NULL;
166bmi_base64_verdict = NULL;
167bmi_base64_tracker_verdict = NULL;
168#endif
169
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170/* If there's only one address we can set everything. */
171
172if (addr->next == NULL)
173 {
174 address_item *addr_orig;
175
176 deliver_localpart = addr->local_part;
177 deliver_localpart_prefix = addr->prefix;
178 deliver_localpart_suffix = addr->suffix;
179
180 for (addr_orig = addr; addr_orig->parent != NULL;
181 addr_orig = addr_orig->parent);
182 deliver_domain_orig = addr_orig->domain;
183
184 /* Re-instate any prefix and suffix in the original local part. In all
185 normal cases, the address will have a router associated with it, and we can
186 choose the caseful or caseless version accordingly. However, when a system
187 filter sets up a pipe, file, or autoreply delivery, no router is involved.
188 In this case, though, there won't be any prefix or suffix to worry about. */
189
190 deliver_localpart_orig = (addr_orig->router == NULL)? addr_orig->local_part :
191 addr_orig->router->caseful_local_part?
192 addr_orig->cc_local_part : addr_orig->lc_local_part;
193
194 /* If there's a parent, make its domain and local part available, and if
195 delivering to a pipe or file, or sending an autoreply, get the local
196 part from the parent. For pipes and files, put the pipe or file string
197 into address_pipe and address_file. */
198
199 if (addr->parent != NULL)
200 {
201 deliver_domain_parent = addr->parent->domain;
202 deliver_localpart_parent = (addr->parent->router == NULL)?
203 addr->parent->local_part :
204 addr->parent->router->caseful_local_part?
205 addr->parent->cc_local_part : addr->parent->lc_local_part;
206
207 /* File deliveries have their own flag because they need to be picked out
208 as special more often. */
209
210 if (testflag(addr, af_pfr))
211 {
212 if (testflag(addr, af_file)) address_file = addr->local_part;
213 else if (deliver_localpart[0] == '|') address_pipe = addr->local_part;
214 deliver_localpart = addr->parent->local_part;
215 deliver_localpart_prefix = addr->parent->prefix;
216 deliver_localpart_suffix = addr->parent->suffix;
217 }
218 }
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219
220#ifdef EXPERIMENTAL_BRIGHTMAIL
221 /* Set expansion variables related to Brightmail AntiSpam */
222 bmi_base64_verdict = bmi_get_base64_verdict(deliver_localpart_orig, deliver_domain_orig);
223 bmi_base64_tracker_verdict = bmi_get_base64_tracker_verdict(bmi_base64_verdict);
224 /* get message delivery status (0 - don't deliver | 1 - deliver) */
225 bmi_deliver = bmi_get_delivery_status(bmi_base64_verdict);
226 /* if message is to be delivered, get eventual alternate location */
227 if (bmi_deliver == 1) {
228 bmi_alt_location = bmi_get_alt_location(bmi_base64_verdict);
229 };
230#endif
231
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232 }
233
234/* For multiple addresses, don't set local part, and leave the domain and
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235self_hostname set only if it is the same for all of them. It is possible to
236have multiple pipe and file addresses, but only when all addresses have routed
237to the same pipe or file. */
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238
239else
240 {
241 address_item *addr2;
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242 if (testflag(addr, af_pfr))
243 {
244 if (testflag(addr, af_file)) address_file = addr->local_part;
245 else if (addr->local_part[0] == '|') address_pipe = addr->local_part;
246 }
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247 for (addr2 = addr->next; addr2 != NULL; addr2 = addr2->next)
248 {
249 if (deliver_domain != NULL &&
250 Ustrcmp(deliver_domain, addr2->domain) != 0)
251 deliver_domain = NULL;
252 if (self_hostname != NULL && (addr2->self_hostname == NULL ||
253 Ustrcmp(self_hostname, addr2->self_hostname) != 0))
254 self_hostname = NULL;
255 if (deliver_domain == NULL && self_hostname == NULL) break;
256 }
257 }
258}
259
260
261
262
263/*************************************************
264* Open a msglog file *
265*************************************************/
266
267/* This function is used both for normal message logs, and for files in the
268msglog directory that are used to catch output from pipes. Try to create the
269directory if it does not exist. From release 4.21, normal message logs should
270be created when the message is received.
271
272Argument:
273 filename the file name
274 mode the mode required
275 error used for saying what failed
276
277Returns: a file descriptor, or -1 (with errno set)
278*/
279
280static int
281open_msglog_file(uschar *filename, int mode, uschar **error)
282{
283int fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode);
284
285if (fd < 0 && errno == ENOENT)
286 {
287 uschar temp[16];
288 sprintf(CS temp, "msglog/%s", message_subdir);
289 if (message_subdir[0] == 0) temp[6] = 0;
290 (void)directory_make(spool_directory, temp, MSGLOG_DIRECTORY_MODE, TRUE);
291 fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode);
292 }
293
294/* Set the close-on-exec flag and change the owner to the exim uid/gid (this
295function is called as root). Double check the mode, because the group setting
296doesn't always get set automatically. */
297
298if (fd >= 0)
299 {
ff790e47 300 (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
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301 if (fchown(fd, exim_uid, exim_gid) < 0)
302 {
303 *error = US"chown";
304 return -1;
305 }
306 if (fchmod(fd, mode) < 0)
307 {
308 *error = US"chmod";
309 return -1;
310 }
311 }
312else *error = US"create";
313
314return fd;
315}
316
317
318
319
320/*************************************************
321* Write to msglog if required *
322*************************************************/
323
324/* Write to the message log, if configured. This function may also be called
325from transports.
326
327Arguments:
328 format a string format
329
330Returns: nothing
331*/
332
333void
334deliver_msglog(const char *format, ...)
335{
336va_list ap;
337if (!message_logs) return;
338va_start(ap, format);
339vfprintf(message_log, format, ap);
340fflush(message_log);
341va_end(ap);
342}
343
344
345
346
347/*************************************************
348* Replicate status for batch *
349*************************************************/
350
351/* When a transport handles a batch of addresses, it may treat them
352individually, or it may just put the status in the first one, and return FALSE,
353requesting that the status be copied to all the others externally. This is the
354replication function. As well as the status, it copies the transport pointer,
355which may have changed if appendfile passed the addresses on to a different
356transport.
357
358Argument: pointer to the first address in a chain
359Returns: nothing
360*/
361
362static void
363replicate_status(address_item *addr)
364{
365address_item *addr2;
366for (addr2 = addr->next; addr2 != NULL; addr2 = addr2->next)
367 {
368 addr2->transport = addr->transport;
369 addr2->transport_return = addr->transport_return;
370 addr2->basic_errno = addr->basic_errno;
371 addr2->more_errno = addr->more_errno;
372 addr2->special_action = addr->special_action;
373 addr2->message = addr->message;
374 addr2->user_message = addr->user_message;
375 }
376}
377
378
379
380/*************************************************
381* Compare lists of hosts *
382*************************************************/
383
384/* This function is given two pointers to chains of host items, and it yields
385TRUE if the lists refer to the same hosts in the same order, except that
386
387(1) Multiple hosts with the same non-negative MX values are permitted to appear
388 in different orders. Round-robinning nameservers can cause this to happen.
389
390(2) Multiple hosts with the same negative MX values less than MX_NONE are also
391 permitted to appear in different orders. This is caused by randomizing
392 hosts lists.
393
394This enables Exim to use a single SMTP transaction for sending to two entirely
395different domains that happen to end up pointing at the same hosts.
396
397Arguments:
398 one points to the first host list
399 two points to the second host list
400
401Returns: TRUE if the lists refer to the same host set
402*/
403
404static BOOL
405same_hosts(host_item *one, host_item *two)
406{
407while (one != NULL && two != NULL)
408 {
409 if (Ustrcmp(one->name, two->name) != 0)
410 {
411 int mx = one->mx;
412 host_item *end_one = one;
413 host_item *end_two = two;
414
415 /* Batch up only if there was no MX and the list was not randomized */
416
417 if (mx == MX_NONE) return FALSE;
418
419 /* Find the ends of the shortest sequence of identical MX values */
420
421 while (end_one->next != NULL && end_one->next->mx == mx &&
422 end_two->next != NULL && end_two->next->mx == mx)
423 {
424 end_one = end_one->next;
425 end_two = end_two->next;
426 }
427
428 /* If there aren't any duplicates, there's no match. */
429
430 if (end_one == one) return FALSE;
431
432 /* For each host in the 'one' sequence, check that it appears in the 'two'
433 sequence, returning FALSE if not. */
434
435 for (;;)
436 {
437 host_item *hi;
438 for (hi = two; hi != end_two->next; hi = hi->next)
439 if (Ustrcmp(one->name, hi->name) == 0) break;
440 if (hi == end_two->next) return FALSE;
441 if (one == end_one) break;
442 one = one->next;
443 }
444
445 /* All the hosts in the 'one' sequence were found in the 'two' sequence.
446 Ensure both are pointing at the last host, and carry on as for equality. */
447
448 two = end_two;
449 }
450
451 /* Hosts matched */
452
453 one = one->next;
454 two = two->next;
455 }
456
457/* True if both are NULL */
458
459return (one == two);
460}
461
462
463
464/*************************************************
465* Compare header lines *
466*************************************************/
467
468/* This function is given two pointers to chains of header items, and it yields
469TRUE if they are the same header texts in the same order.
470
471Arguments:
472 one points to the first header list
473 two points to the second header list
474
475Returns: TRUE if the lists refer to the same header set
476*/
477
478static BOOL
479same_headers(header_line *one, header_line *two)
480{
481for (;;)
482 {
483 if (one == two) return TRUE; /* Includes the case where both NULL */
484 if (one == NULL || two == NULL) return FALSE;
485 if (Ustrcmp(one->text, two->text) != 0) return FALSE;
486 one = one->next;
487 two = two->next;
488 }
489}
490
491
492
493/*************************************************
494* Compare string settings *
495*************************************************/
496
497/* This function is given two pointers to strings, and it returns
498TRUE if they are the same pointer, or if the two strings are the same.
499
500Arguments:
501 one points to the first string
502 two points to the second string
503
504Returns: TRUE or FALSE
505*/
506
507static BOOL
508same_strings(uschar *one, uschar *two)
509{
510if (one == two) return TRUE; /* Includes the case where both NULL */
511if (one == NULL || two == NULL) return FALSE;
512return (Ustrcmp(one, two) == 0);
513}
514
515
516
517/*************************************************
518* Compare uid/gid for addresses *
519*************************************************/
520
521/* This function is given a transport and two addresses. It yields TRUE if the
522uid/gid/initgroups settings for the two addresses are going to be the same when
523they are delivered.
524
525Arguments:
526 tp the transort
527 addr1 the first address
528 addr2 the second address
529
530Returns: TRUE or FALSE
531*/
532
533static BOOL
534same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2)
535{
536if (!tp->uid_set && tp->expand_uid == NULL && !tp->deliver_as_creator)
537 {
538 if (testflag(addr1, af_uid_set) != testflag(addr2, af_gid_set) ||
539 (testflag(addr1, af_uid_set) &&
540 (addr1->uid != addr2->uid ||
541 testflag(addr1, af_initgroups) != testflag(addr2, af_initgroups))))
542 return FALSE;
543 }
544
545if (!tp->gid_set && tp->expand_gid == NULL)
546 {
547 if (testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set) ||
548 (testflag(addr1, af_gid_set) && addr1->gid != addr2->gid))
549 return FALSE;
550 }
551
552return TRUE;
553}
554
555
556
557
558/*************************************************
559* Record that an address is complete *
560*************************************************/
561
562/* This function records that an address is complete. This is straightforward
563for most addresses, where the unique address is just the full address with the
564domain lower cased. For homonyms (addresses that are the same as one of their
565ancestors) their are complications. Their unique addresses have \x\ prepended
566(where x = 0, 1, 2...), so that de-duplication works correctly for siblings and
567cousins.
568
569Exim used to record the unique addresses of homonyms as "complete". This,
570however, fails when the pattern of redirection varies over time (e.g. if taking
571unseen copies at only some times of day) because the prepended numbers may vary
572from one delivery run to the next. This problem is solved by never recording
573prepended unique addresses as complete. Instead, when a homonymic address has
574actually been delivered via a transport, we record its basic unique address
575followed by the name of the transport. This is checked in subsequent delivery
576runs whenever an address is routed to a transport.
577
578If the completed address is a top-level one (has no parent, which means it
579cannot be homonymic) we also add the original address to the non-recipients
580tree, so that it gets recorded in the spool file and therefore appears as
581"done" in any spool listings. The original address may differ from the unique
582address in the case of the domain.
583
584Finally, this function scans the list of duplicates, marks as done any that
585match this address, and calls child_done() for their ancestors.
586
587Arguments:
588 addr address item that has been completed
589 now current time as a string
590
591Returns: nothing
592*/
593
594static void
595address_done(address_item *addr, uschar *now)
596{
597address_item *dup;
598
599update_spool = TRUE; /* Ensure spool gets updated */
600
601/* Top-level address */
602
603if (addr->parent == NULL)
604 {
605 tree_add_nonrecipient(addr->unique);
606 tree_add_nonrecipient(addr->address);
607 }
608
609/* Homonymous child address */
610
611else if (testflag(addr, af_homonym))
612 {
613 if (addr->transport != NULL)
614 {
615 tree_add_nonrecipient(
616 string_sprintf("%s/%s", addr->unique + 3, addr->transport->name));
617 }
618 }
619
620/* Non-homonymous child address */
621
622else tree_add_nonrecipient(addr->unique);
623
624/* Check the list of duplicate addresses and ensure they are now marked
625done as well. */
626
627for (dup = addr_duplicate; dup != NULL; dup = dup->next)
628 {
629 if (Ustrcmp(addr->unique, dup->unique) == 0)
630 {
57730b52 631 tree_add_nonrecipient(dup->unique);
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632 child_done(dup, now);
633 }
634 }
635}
636
637
638
639
640/*************************************************
641* Decrease counts in parents and mark done *
642*************************************************/
643
644/* This function is called when an address is complete. If there is a parent
645address, its count of children is decremented. If there are still other
646children outstanding, the function exits. Otherwise, if the count has become
647zero, address_done() is called to mark the parent and its duplicates complete.
648Then loop for any earlier ancestors.
649
650Arguments:
651 addr points to the completed address item
652 now the current time as a string, for writing to the message log
653
654Returns: nothing
655*/
656
657static void
658child_done(address_item *addr, uschar *now)
659{
660address_item *aa;
661while (addr->parent != NULL)
662 {
663 addr = addr->parent;
664 if ((addr->child_count -= 1) > 0) return; /* Incomplete parent */
665 address_done(addr, now);
666
667 /* Log the completion of all descendents only when there is no ancestor with
668 the same original address. */
669
670 for (aa = addr->parent; aa != NULL; aa = aa->parent)
671 if (Ustrcmp(aa->address, addr->address) == 0) break;
672 if (aa != NULL) continue;
673
674 deliver_msglog("%s %s: children all complete\n", now, addr->address);
675 DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address);
676 }
677}
678
679
680
681
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682static uschar *
683d_hostlog(uschar * s, int * sizep, int * ptrp, address_item * addr)
684{
685 s = string_append(s, sizep, ptrp, 5, US" H=", addr->host_used->name,
686 US" [", addr->host_used->address, US"]");
687 if ((log_extra_selector & LX_outgoing_port) != 0)
688 s = string_append(s, sizep, ptrp, 2, US":", string_sprintf("%d",
689 addr->host_used->port));
690 return s;
691}
692
693#ifdef SUPPORT_TLS
694static uschar *
695d_tlslog(uschar * s, int * sizep, int * ptrp, address_item * addr)
696{
697 if ((log_extra_selector & LX_tls_cipher) != 0 && addr->cipher != NULL)
698 s = string_append(s, sizep, ptrp, 2, US" X=", addr->cipher);
699 if ((log_extra_selector & LX_tls_certificate_verified) != 0 &&
700 addr->cipher != NULL)
701 s = string_append(s, sizep, ptrp, 2, US" CV=",
53a7196b
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702 testflag(addr, af_cert_verified)
703 ?
704#ifdef EXPERIMENTAL_DANE
705 testflag(addr, af_dane_verified)
706 ? "dane"
707 :
708#endif
709 "yes"
710 : "no");
67d81c10
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711 if ((log_extra_selector & LX_tls_peerdn) != 0 && addr->peerdn != NULL)
712 s = string_append(s, sizep, ptrp, 3, US" DN=\"",
713 string_printing(addr->peerdn), US"\"");
714 return s;
715}
716#endif
717
a7538db1 718
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719
720
a7538db1
JH
721#ifdef EXPERIMENTAL_TPDA
722int
723tpda_raise_event(uschar * action, uschar * event, uschar * ev_data)
724{
725uschar * s;
726if (action)
727 {
728 DEBUG(D_deliver)
729 debug_printf("TPDA(%s): tpda_event_action=|%s| tpda_delivery_IP=%s\n",
730 event,
731 action, deliver_host_address);
732
733 tpda_event = event;
734 tpda_data = ev_data;
735
736 if (!(s = expand_string(action)) && *expand_string_message)
737 log_write(0, LOG_MAIN|LOG_PANIC,
738 "failed to expand tpda_event_action %s in %s: %s\n",
739 event, transport_name, expand_string_message);
740
741 tpda_event = tpda_data = NULL;
742
743 /* If the expansion returns anything but an empty string, flag for
744 the caller to modify his normal processing
745 */
746 if (s && *s)
747 {
748 DEBUG(D_deliver)
41afb5cb 749 debug_printf("TPDA(%s): event_action returned \"%s\"\n", event, s);
a7538db1
JH
750 return DEFER;
751 }
752 }
753return OK;
754}
14a465c3
JH
755
756static void
757tpda_msg_event(uschar * event, address_item * addr)
758{
759uschar * save_domain = deliver_domain;
760uschar * save_local = deliver_localpart;
761
762if (!addr->transport)
763 return;
764
765router_name = addr->router ? addr->router->name : NULL;
766transport_name = addr->transport->name;
767deliver_domain = addr->domain;
768deliver_localpart = addr->local_part;
769
770(void) tpda_raise_event(addr->transport->tpda_event_action, event,
771 addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0
772 ? addr->message : NULL);
773
774deliver_localpart = save_local;
775deliver_domain = save_domain;
776router_name = transport_name = NULL;
777}
778#endif /*EXPERIMENTAL_TPDA*/
779
780
a7538db1 781
817d9f57 782/* If msg is NULL this is a delivery log and logchar is used. Otherwise
67d81c10 783this is a nonstandard call; no two-character delivery flag is written
817d9f57
JH
784but sender-host and sender are prefixed and "msg" is inserted in the log line.
785
786Arguments:
787 flags passed to log_write()
788*/
e4bdf652 789void
817d9f57 790delivery_log(int flags, address_item * addr, int logchar, uschar * msg)
e4bdf652
JH
791{
792uschar *log_address;
793int size = 256; /* Used for a temporary, */
794int ptr = 0; /* expanding buffer, for */
795uschar *s; /* building log lines; */
796void *reset_point; /* released afterwards. */
797
798
799/* Log the delivery on the main log. We use an extensible string to build up
800the log line, and reset the store afterwards. Remote deliveries should always
801have a pointer to the host item that succeeded; local deliveries can have a
802pointer to a single host item in their host list, for use by the transport. */
803
d68218c7 804#ifdef EXPERIMENTAL_TPDA
a7538db1 805 /* presume no successful remote delivery */
783b385f 806 lookup_dnssec_authenticated = NULL;
d68218c7
JH
807#endif
808
e4bdf652 809s = reset_point = store_get(size);
e4bdf652
JH
810
811log_address = string_log_address(addr, (log_write_selector & L_all_parents) != 0, TRUE);
817d9f57
JH
812if (msg)
813 s = string_append(s, &size, &ptr, 3, host_and_ident(TRUE), US" ", log_address);
814else
815 {
816 s[ptr++] = logchar;
817 s = string_append(s, &size, &ptr, 2, US"> ", log_address);
818 }
e4bdf652 819
817d9f57 820if ((log_extra_selector & LX_sender_on_delivery) != 0 || msg)
e4bdf652
JH
821 s = string_append(s, &size, &ptr, 3, US" F=<", sender_address, US">");
822
823#ifdef EXPERIMENTAL_SRS
824if(addr->p.srs_sender)
825 s = string_append(s, &size, &ptr, 3, US" SRS=<", addr->p.srs_sender, US">");
826#endif
827
828/* You might think that the return path must always be set for a successful
829delivery; indeed, I did for some time, until this statement crashed. The case
830when it is not set is for a delivery to /dev/null which is optimised by not
831being run at all. */
832
833if (used_return_path != NULL &&
834 (log_extra_selector & LX_return_path_on_delivery) != 0)
835 s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
836
817d9f57
JH
837if (msg)
838 s = string_append(s, &size, &ptr, 2, US" ", msg);
e4bdf652 839
817d9f57 840/* For a delivery from a system filter, there may not be a router */
e4bdf652
JH
841if (addr->router != NULL)
842 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
843
844s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
845
846if ((log_extra_selector & LX_delivery_size) != 0)
847 s = string_append(s, &size, &ptr, 2, US" S=",
848 string_sprintf("%d", transport_count));
849
850/* Local delivery */
851
852if (addr->transport->info->local)
853 {
a7538db1 854 if (addr->host_list)
e4bdf652
JH
855 s = string_append(s, &size, &ptr, 2, US" H=", addr->host_list->name);
856 if (addr->shadow_message != NULL)
857 s = string_cat(s, &size, &ptr, addr->shadow_message,
858 Ustrlen(addr->shadow_message));
859 }
860
861/* Remote delivery */
862
863else
864 {
783b385f 865 if (addr->host_used)
e4bdf652 866 {
67d81c10 867 s = d_hostlog(s, &size, &ptr, addr);
e4bdf652
JH
868 if (continue_sequence > 1)
869 s = string_cat(s, &size, &ptr, US"*", 1);
d68218c7 870
a7538db1
JH
871#ifdef EXPERIMENTAL_TPDA
872 deliver_host_address = addr->host_used->address;
873 deliver_host_port = addr->host_used->port;
783b385f
JH
874
875 /* DNS lookup status */
876 lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes"
877 : addr->host_used->dnssec==DS_NO ? US"no"
878 : NULL;
a7538db1 879#endif
e4bdf652
JH
880 }
881
a7538db1 882#ifdef SUPPORT_TLS
67d81c10 883 s = d_tlslog(s, &size, &ptr, addr);
a7538db1 884#endif
e4bdf652 885
018c60d7 886 if (addr->authenticator)
6f123593 887 {
018c60d7
JH
888 s = string_append(s, &size, &ptr, 2, US" A=", addr->authenticator);
889 if (addr->auth_id)
c8e2fc1e 890 {
018c60d7
JH
891 s = string_append(s, &size, &ptr, 2, US":", addr->auth_id);
892 if (log_extra_selector & LX_smtp_mailauth && addr->auth_sndr)
893 s = string_append(s, &size, &ptr, 2, US":", addr->auth_sndr);
c8e2fc1e 894 }
6f123593
JH
895 }
896
a7538db1 897#ifndef DISABLE_PRDR
fd98a5c6
JH
898 if (addr->flags & af_prdr_used)
899 s = string_append(s, &size, &ptr, 1, US" PRDR");
a7538db1 900#endif
76f44207
WB
901 }
902
903/* confirmation message (SMTP (host_used) and LMTP (driver_name)) */
fd98a5c6 904
27520a68
JH
905if (log_extra_selector & LX_smtp_confirmation &&
906 addr->message &&
907 (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0))
76f44207
WB
908 {
909 int i;
910 uschar *p = big_buffer;
911 uschar *ss = addr->message;
912 *p++ = '\"';
27520a68 913 for (i = 0; i < 256 && ss[i] != 0; i++) /* limit logged amount */
e4bdf652 914 {
27520a68 915 if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */
76f44207 916 *p++ = ss[i];
e4bdf652 917 }
76f44207
WB
918 *p++ = '\"';
919 *p = 0;
920 s = string_append(s, &size, &ptr, 2, US" C=", big_buffer);
e4bdf652
JH
921 }
922
923/* Time on queue and actual time taken to deliver */
924
925if ((log_extra_selector & LX_queue_time) != 0)
e4bdf652 926 s = string_append(s, &size, &ptr, 2, US" QT=",
19050083 927 readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
e4bdf652
JH
928
929if ((log_extra_selector & LX_deliver_time) != 0)
e4bdf652
JH
930 s = string_append(s, &size, &ptr, 2, US" DT=",
931 readconf_printtime(addr->more_errno));
e4bdf652
JH
932
933/* string_cat() always leaves room for the terminator. Release the
934store we used to build the line after writing it. */
935
936s[ptr] = 0;
817d9f57 937log_write(0, flags, "%s", s);
d68218c7
JH
938
939#ifdef EXPERIMENTAL_TPDA
14a465c3
JH
940/*XXX cutthrough calls this also for non-delivery...*/
941tpda_msg_event(US"msg:delivery", addr);
d68218c7 942#endif
14a465c3 943
e4bdf652
JH
944store_reset(reset_point);
945return;
946}
947
948
949
059ec3d9
PH
950/*************************************************
951* Actions at the end of handling an address *
952*************************************************/
953
954/* This is a function for processing a single address when all that can be done
955with it has been done.
956
957Arguments:
958 addr points to the address block
959 result the result of the delivery attempt
960 logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC)
961 driver_type indicates which type of driver (transport, or router) was last
962 to process the address
963 logchar '=' or '-' for use when logging deliveries with => or ->
964
965Returns: nothing
966*/
967
968static void
969post_process_one(address_item *addr, int result, int logflags, int driver_type,
970 int logchar)
971{
972uschar *now = tod_stamp(tod_log);
973uschar *driver_kind = NULL;
974uschar *driver_name = NULL;
975uschar *log_address;
976
977int size = 256; /* Used for a temporary, */
978int ptr = 0; /* expanding buffer, for */
979uschar *s; /* building log lines; */
980void *reset_point; /* released afterwards. */
981
982
983DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result);
984
985/* Set up driver kind and name for logging. Disable logging if the router or
986transport has disabled it. */
987
988if (driver_type == DTYPE_TRANSPORT)
989 {
990 if (addr->transport != NULL)
991 {
992 driver_name = addr->transport->name;
993 driver_kind = US" transport";
994 disable_logging = addr->transport->disable_logging;
995 }
996 else driver_kind = US"transporting";
997 }
998else if (driver_type == DTYPE_ROUTER)
999 {
1000 if (addr->router != NULL)
1001 {
1002 driver_name = addr->router->name;
1003 driver_kind = US" router";
1004 disable_logging = addr->router->disable_logging;
1005 }
1006 else driver_kind = US"routing";
1007 }
1008
1009/* If there's an error message set, ensure that it contains only printing
1010characters - it should, but occasionally things slip in and this at least
49c2d5ea
PH
1011stops the log format from getting wrecked. We also scan the message for an LDAP
1012expansion item that has a password setting, and flatten the password. This is a
1013fudge, but I don't know a cleaner way of doing this. (If the item is badly
1014malformed, it won't ever have gone near LDAP.) */
059ec3d9 1015
49c2d5ea
PH
1016if (addr->message != NULL)
1017 {
1018 addr->message = string_printing(addr->message);
76aa570c
PP
1019 if (((Ustrstr(addr->message, "failed to expand") != NULL) || (Ustrstr(addr->message, "expansion of ") != NULL)) &&
1020 (Ustrstr(addr->message, "mysql") != NULL ||
1021 Ustrstr(addr->message, "pgsql") != NULL ||
9bdd29ad
TL
1022#ifdef EXPERIMENTAL_REDIS
1023 Ustrstr(addr->message, "redis") != NULL ||
1024#endif
76aa570c
PP
1025 Ustrstr(addr->message, "sqlite") != NULL ||
1026 Ustrstr(addr->message, "ldap:") != NULL ||
49c2d5ea
PH
1027 Ustrstr(addr->message, "ldapdn:") != NULL ||
1028 Ustrstr(addr->message, "ldapm:") != NULL))
1029 {
76aa570c 1030 addr->message = string_sprintf("Temporary internal error");
49c2d5ea
PH
1031 }
1032 }
059ec3d9
PH
1033
1034/* If we used a transport that has one of the "return_output" options set, and
1035if it did in fact generate some output, then for return_output we treat the
1036message as failed if it was not already set that way, so that the output gets
1037returned to the sender, provided there is a sender to send it to. For
1038return_fail_output, do this only if the delivery failed. Otherwise we just
1039unlink the file, and remove the name so that if the delivery failed, we don't
1040try to send back an empty or unwanted file. The log_output options operate only
1041on a non-empty file.
1042
1043In any case, we close the message file, because we cannot afford to leave a
1044file-descriptor for one address while processing (maybe very many) others. */
1045
1046if (addr->return_file >= 0 && addr->return_filename != NULL)
1047 {
1048 BOOL return_output = FALSE;
1049 struct stat statbuf;
54fc8428 1050 (void)EXIMfsync(addr->return_file);
059ec3d9
PH
1051
1052 /* If there is no output, do nothing. */
1053
1054 if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0)
1055 {
1056 transport_instance *tb = addr->transport;
1057
1058 /* Handle logging options */
1059
1060 if (tb->log_output || (result == FAIL && tb->log_fail_output) ||
1061 (result == DEFER && tb->log_defer_output))
1062 {
1063 uschar *s;
1064 FILE *f = Ufopen(addr->return_filename, "rb");
1065 if (f == NULL)
1066 log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output "
1067 "from %s transport: %s", addr->return_filename, tb->name,
1068 strerror(errno));
1069 else
1070 {
1071 s = US Ufgets(big_buffer, big_buffer_size, f);
1072 if (s != NULL)
1073 {
1074 uschar *p = big_buffer + Ustrlen(big_buffer);
1075 while (p > big_buffer && isspace(p[-1])) p--;
1076 *p = 0;
1077 s = string_printing(big_buffer);
1078 log_write(0, LOG_MAIN, "<%s>: %s transport output: %s",
1079 addr->address, tb->name, s);
1080 }
f1e894f3 1081 (void)fclose(f);
059ec3d9
PH
1082 }
1083 }
1084
1085 /* Handle returning options, but only if there is an address to return
1086 the text to. */
1087
1088 if (sender_address[0] != 0 || addr->p.errors_address != NULL)
1089 {
1090 if (tb->return_output)
1091 {
1092 addr->transport_return = result = FAIL;
1093 if (addr->basic_errno == 0 && addr->message == NULL)
1094 addr->message = US"return message generated";
1095 return_output = TRUE;
1096 }
1097 else
1098 if (tb->return_fail_output && result == FAIL) return_output = TRUE;
1099 }
1100 }
1101
1102 /* Get rid of the file unless it might be returned, but close it in
1103 all cases. */
1104
1105 if (!return_output)
1106 {
1107 Uunlink(addr->return_filename);
1108 addr->return_filename = NULL;
1109 addr->return_file = -1;
1110 }
1111
f1e894f3 1112 (void)close(addr->return_file);
059ec3d9
PH
1113 }
1114
9d1c15ef 1115/* The success case happens only after delivery by a transport. */
059ec3d9
PH
1116
1117if (result == OK)
1118 {
1119 addr->next = addr_succeed;
1120 addr_succeed = addr;
1121
1122 /* Call address_done() to ensure that we don't deliver to this address again,
1123 and write appropriate things to the message log. If it is a child address, we
1124 call child_done() to scan the ancestors and mark them complete if this is the
1125 last child to complete. */
1126
1127 address_done(addr, now);
1128 DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address);
1129
1130 if (addr->parent == NULL)
059ec3d9
PH
1131 deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address,
1132 driver_name, driver_kind);
059ec3d9
PH
1133 else
1134 {
1135 deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address,
1136 addr->parent->address, driver_name, driver_kind);
1137 child_done(addr, now);
1138 }
1139
9d1c15ef 1140 /* Certificates for logging (via TPDA) */
a7538db1 1141#ifdef SUPPORT_TLS
9d1c15ef
JH
1142 tls_out.ourcert = addr->ourcert;
1143 addr->ourcert = NULL;
1144 tls_out.peercert = addr->peercert;
1145 addr->peercert = NULL;
018058b2 1146
018058b2
JH
1147 tls_out.cipher = addr->cipher;
1148 tls_out.peerdn = addr->peerdn;
1149 tls_out.ocsp = addr->ocsp;
83b27293
JH
1150# ifdef EXPERIMENTAL_DANE
1151 tls_out.dane_verified = testflag(addr, af_dane_verified);
1152# endif
a7538db1 1153#endif
9d1c15ef 1154
817d9f57 1155 delivery_log(LOG_MAIN, addr, logchar, NULL);
9d1c15ef 1156
a7538db1 1157#ifdef SUPPORT_TLS
9d1c15ef
JH
1158 if (tls_out.ourcert)
1159 {
1160 tls_free_cert(tls_out.ourcert);
1161 tls_out.ourcert = NULL;
1162 }
1163 if (tls_out.peercert)
1164 {
1165 tls_free_cert(tls_out.peercert);
1166 tls_out.peercert = NULL;
1167 }
018058b2
JH
1168 tls_out.cipher = NULL;
1169 tls_out.peerdn = NULL;
1170 tls_out.ocsp = OCSP_NOT_REQ;
83b27293
JH
1171# ifdef EXPERIMENTAL_DANE
1172 tls_out.dane_verified = FALSE;
1173# endif
a7538db1 1174#endif
059ec3d9
PH
1175 }
1176
1177
1178/* Soft failure, or local delivery process failed; freezing may be
1179requested. */
1180
1181else if (result == DEFER || result == PANIC)
1182 {
1183 if (result == PANIC) logflags |= LOG_PANIC;
1184
1185 /* This puts them on the chain in reverse order. Do not change this, because
1186 the code for handling retries assumes that the one with the retry
1187 information is last. */
1188
1189 addr->next = addr_defer;
1190 addr_defer = addr;
1191
1192 /* The only currently implemented special action is to freeze the
1193 message. Logging of this is done later, just before the -H file is
1194 updated. */
1195
1196 if (addr->special_action == SPECIAL_FREEZE)
1197 {
1198 deliver_freeze = TRUE;
1199 deliver_frozen_at = time(NULL);
1200 update_spool = TRUE;
1201 }
1202
1203 /* If doing a 2-stage queue run, we skip writing to either the message
1204 log or the main log for SMTP defers. */
1205
1206 if (!queue_2stage || addr->basic_errno != 0)
1207 {
1208 uschar ss[32];
1209
1210 /* For errors of the type "retry time not reached" (also remotes skipped
1211 on queue run), logging is controlled by L_retry_defer. Note that this kind
1212 of error number is negative, and all the retry ones are less than any
1213 others. */
1214
1215 unsigned int use_log_selector = (addr->basic_errno <= ERRNO_RETRY_BASE)?
1216 L_retry_defer : 0;
1217
1218 /* Build up the line that is used for both the message log and the main
1219 log. */
1220
1221 s = reset_point = store_get(size);
e4bdf652
JH
1222
1223 /* Create the address string for logging. Must not do this earlier, because
1224 an OK result may be changed to FAIL when a pipe returns text. */
1225
1226 log_address = string_log_address(addr,
1227 (log_write_selector & L_all_parents) != 0, result == OK);
1228
059ec3d9
PH
1229 s = string_cat(s, &size, &ptr, log_address, Ustrlen(log_address));
1230
1231 /* Either driver_name contains something and driver_kind contains
1232 " router" or " transport" (note the leading space), or driver_name is
1233 a null string and driver_kind contains "routing" without the leading
1234 space, if all routing has been deferred. When a domain has been held,
1235 so nothing has been done at all, both variables contain null strings. */
1236
1237 if (driver_name == NULL)
1238 {
1239 if (driver_kind != NULL)
1240 s = string_append(s, &size, &ptr, 2, US" ", driver_kind);
1241 }
1242 else
1243 {
1244 if (driver_kind[1] == 't' && addr->router != NULL)
1245 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
1246 Ustrcpy(ss, " ?=");
1247 ss[1] = toupper(driver_kind[1]);
1248 s = string_append(s, &size, &ptr, 2, ss, driver_name);
1249 }
1250
1251 sprintf(CS ss, " defer (%d)", addr->basic_errno);
1252 s = string_cat(s, &size, &ptr, ss, Ustrlen(ss));
1253
1254 if (addr->basic_errno > 0)
1255 s = string_append(s, &size, &ptr, 2, US": ",
1256 US strerror(addr->basic_errno));
1257
1258 if (addr->message != NULL)
1259 s = string_append(s, &size, &ptr, 2, US": ", addr->message);
1260
1261 s[ptr] = 0;
1262
1263 /* Log the deferment in the message log, but don't clutter it
1264 up with retry-time defers after the first delivery attempt. */
1265
1266 if (deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE)
1267 deliver_msglog("%s %s\n", now, s);
1268
1269 /* Write the main log and reset the store */
1270
1271 log_write(use_log_selector, logflags, "== %s", s);
1272 store_reset(reset_point);
1273 }
1274 }
1275
1276
1277/* Hard failure. If there is an address to which an error message can be sent,
1278put this address on the failed list. If not, put it on the deferred list and
1279freeze the mail message for human attention. The latter action can also be
1280explicitly requested by a router or transport. */
1281
1282else
1283 {
1284 /* If this is a delivery error, or a message for which no replies are
1285 wanted, and the message's age is greater than ignore_bounce_errors_after,
1286 force the af_ignore_error flag. This will cause the address to be discarded
1287 later (with a log entry). */
1288
1289 if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after)
1290 setflag(addr, af_ignore_error);
1291
1292 /* Freeze the message if requested, or if this is a bounce message (or other
652e1b65
PH
1293 message with null sender) and this address does not have its own errors
1294 address. However, don't freeze if errors are being ignored. The actual code
1295 to ignore occurs later, instead of sending a message. Logging of freezing
1296 occurs later, just before writing the -H file. */
059ec3d9
PH
1297
1298 if (!testflag(addr, af_ignore_error) &&
652e1b65
PH
1299 (addr->special_action == SPECIAL_FREEZE ||
1300 (sender_address[0] == 0 && addr->p.errors_address == NULL)
1301 ))
059ec3d9
PH
1302 {
1303 frozen_info = (addr->special_action == SPECIAL_FREEZE)? US"" :
1304 (sender_local && !local_error_message)?
1305 US" (message created with -f <>)" : US" (delivery error message)";
1306 deliver_freeze = TRUE;
1307 deliver_frozen_at = time(NULL);
1308 update_spool = TRUE;
1309
1310 /* The address is put on the defer rather than the failed queue, because
1311 the message is being retained. */
1312
1313 addr->next = addr_defer;
1314 addr_defer = addr;
1315 }
1316
1317 /* Don't put the address on the nonrecipients tree yet; wait until an
1318 error message has been successfully sent. */
1319
1320 else
1321 {
1322 addr->next = addr_failed;
1323 addr_failed = addr;
1324 }
1325
1326 /* Build up the log line for the message and main logs */
1327
1328 s = reset_point = store_get(size);
e4bdf652
JH
1329
1330 /* Create the address string for logging. Must not do this earlier, because
1331 an OK result may be changed to FAIL when a pipe returns text. */
1332
1333 log_address = string_log_address(addr,
1334 (log_write_selector & L_all_parents) != 0, result == OK);
1335
059ec3d9
PH
1336 s = string_cat(s, &size, &ptr, log_address, Ustrlen(log_address));
1337
1338 if ((log_extra_selector & LX_sender_on_delivery) != 0)
1339 s = string_append(s, &size, &ptr, 3, US" F=<", sender_address, US">");
1340
1341 /* Return path may not be set if no delivery actually happened */
1342
1343 if (used_return_path != NULL &&
1344 (log_extra_selector & LX_return_path_on_delivery) != 0)
059ec3d9 1345 s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
059ec3d9
PH
1346
1347 if (addr->router != NULL)
1348 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
1349 if (addr->transport != NULL)
1350 s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
1351
1352 if (addr->host_used != NULL)
67d81c10
JH
1353 s = d_hostlog(s, &size, &ptr, addr);
1354
a7538db1 1355#ifdef SUPPORT_TLS
67d81c10 1356 s = d_tlslog(s, &size, &ptr, addr);
a7538db1 1357#endif
059ec3d9
PH
1358
1359 if (addr->basic_errno > 0)
1360 s = string_append(s, &size, &ptr, 2, US": ",
1361 US strerror(addr->basic_errno));
1362
1363 if (addr->message != NULL)
1364 s = string_append(s, &size, &ptr, 2, US": ", addr->message);
1365
1366 s[ptr] = 0;
1367
1368 /* Do the logging. For the message log, "routing failed" for those cases,
1369 just to make it clearer. */
1370
1371 if (driver_name == NULL)
1372 deliver_msglog("%s %s failed for %s\n", now, driver_kind, s);
1373 else
1374 deliver_msglog("%s %s\n", now, s);
1375
1376 log_write(0, LOG_MAIN, "** %s", s);
14a465c3
JH
1377
1378#ifdef EXPERIMENTAL_TPDA
1379 tpda_msg_event(US"msg:fail:delivery", addr);
1380#endif
1381
059ec3d9
PH
1382 store_reset(reset_point);
1383 }
1384
1385/* Ensure logging is turned on again in all cases */
1386
1387disable_logging = FALSE;
1388}
1389
1390
1391
1392
1393/*************************************************
1394* Address-independent error *
1395*************************************************/
1396
1397/* This function is called when there's an error that is not dependent on a
1398particular address, such as an expansion string failure. It puts the error into
1399all the addresses in a batch, logs the incident on the main and panic logs, and
1400clears the expansions. It is mostly called from local_deliver(), but can be
1401called for a remote delivery via findugid().
1402
1403Arguments:
1404 logit TRUE if (MAIN+PANIC) logging required
1405 addr the first of the chain of addresses
1406 code the error code
1407 format format string for error message, or NULL if already set in addr
1408 ... arguments for the format
1409
1410Returns: nothing
1411*/
1412
1413static void
1414common_error(BOOL logit, address_item *addr, int code, uschar *format, ...)
1415{
1416address_item *addr2;
1417addr->basic_errno = code;
1418
1419if (format != NULL)
1420 {
1421 va_list ap;
1422 uschar buffer[512];
1423 va_start(ap, format);
1424 if (!string_vformat(buffer, sizeof(buffer), CS format, ap))
1425 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
81f91683 1426 "common_error expansion was longer than " SIZE_T_FMT, sizeof(buffer));
059ec3d9
PH
1427 va_end(ap);
1428 addr->message = string_copy(buffer);
1429 }
1430
1431for (addr2 = addr->next; addr2 != NULL; addr2 = addr2->next)
1432 {
1433 addr2->basic_errno = code;
1434 addr2->message = addr->message;
1435 }
1436
1437if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message);
1438deliver_set_expansions(NULL);
1439}
1440
1441
1442
1443
1444/*************************************************
1445* Check a "never users" list *
1446*************************************************/
1447
1448/* This function is called to check whether a uid is on one of the two "never
1449users" lists.
1450
1451Arguments:
1452 uid the uid to be checked
1453 nusers the list to be scanned; the first item in the list is the count
1454
1455Returns: TRUE if the uid is on the list
1456*/
1457
1458static BOOL
1459check_never_users(uid_t uid, uid_t *nusers)
1460{
1461int i;
1462if (nusers == NULL) return FALSE;
1463for (i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE;
1464return FALSE;
1465}
1466
1467
1468
1469/*************************************************
1470* Find uid and gid for a transport *
1471*************************************************/
1472
1473/* This function is called for both local and remote deliveries, to find the
1474uid/gid under which to run the delivery. The values are taken preferentially
1475from the transport (either explicit or deliver_as_creator), then from the
1476address (i.e. the router), and if nothing is set, the exim uid/gid are used. If
1477the resulting uid is on the "never_users" or the "fixed_never_users" list, a
1478panic error is logged, and the function fails (which normally leads to delivery
1479deferral).
1480
1481Arguments:
1482 addr the address (possibly a chain)
1483 tp the transport
1484 uidp pointer to uid field
1485 gidp pointer to gid field
1486 igfp pointer to the use_initgroups field
1487
1488Returns: FALSE if failed - error has been set in address(es)
1489*/
1490
1491static BOOL
1492findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp,
1493 BOOL *igfp)
1494{
1495uschar *nuname = NULL;
1496BOOL gid_set = FALSE;
1497
1498/* Default initgroups flag comes from the transport */
1499
1500*igfp = tp->initgroups;
1501
1502/* First see if there's a gid on the transport, either fixed or expandable.
1503The expanding function always logs failure itself. */
1504
1505if (tp->gid_set)
1506 {
1507 *gidp = tp->gid;
1508 gid_set = TRUE;
1509 }
1510else if (tp->expand_gid != NULL)
1511 {
1512 if (route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp,
1513 &(addr->message))) gid_set = TRUE;
1514 else
1515 {
1516 common_error(FALSE, addr, ERRNO_GIDFAIL, NULL);
1517 return FALSE;
1518 }
1519 }
1520
911f6fde
PH
1521/* If the transport did not set a group, see if the router did. */
1522
1523if (!gid_set && testflag(addr, af_gid_set))
1524 {
1525 *gidp = addr->gid;
1526 gid_set = TRUE;
1527 }
1528
059ec3d9
PH
1529/* Pick up a uid from the transport if one is set. */
1530
1531if (tp->uid_set) *uidp = tp->uid;
1532
1533/* Otherwise, try for an expandable uid field. If it ends up as a numeric id,
1534it does not provide a passwd value from which a gid can be taken. */
1535
1536else if (tp->expand_uid != NULL)
1537 {
1538 struct passwd *pw;
1539 if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw,
1540 uidp, &(addr->message)))
1541 {
1542 common_error(FALSE, addr, ERRNO_UIDFAIL, NULL);
1543 return FALSE;
1544 }
1545 if (!gid_set && pw != NULL)
1546 {
1547 *gidp = pw->pw_gid;
1548 gid_set = TRUE;
1549 }
1550 }
1551
1552/* If the transport doesn't set the uid, test the deliver_as_creator flag. */
1553
1554else if (tp->deliver_as_creator)
1555 {
1556 *uidp = originator_uid;
1557 if (!gid_set)
1558 {
1559 *gidp = originator_gid;
1560 gid_set = TRUE;
1561 }
1562 }
1563
911f6fde
PH
1564/* Otherwise see if the address specifies the uid and if so, take it and its
1565initgroups flag. */
059ec3d9
PH
1566
1567else if (testflag(addr, af_uid_set))
1568 {
1569 *uidp = addr->uid;
1570 *igfp = testflag(addr, af_initgroups);
059ec3d9
PH
1571 }
1572
1573/* Nothing has specified the uid - default to the Exim user, and group if the
1574gid is not set. */
1575
1576else
1577 {
1578 *uidp = exim_uid;
1579 if (!gid_set)
1580 {
1581 *gidp = exim_gid;
1582 gid_set = TRUE;
1583 }
1584 }
1585
911f6fde
PH
1586/* If no gid is set, it is a disaster. We default to the Exim gid only if
1587defaulting to the Exim uid. In other words, if the configuration has specified
1588a uid, it must also provide a gid. */
059ec3d9
PH
1589
1590if (!gid_set)
1591 {
1592 common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for "
1593 "%s transport", tp->name);
1594 return FALSE;
1595 }
1596
1597/* Check that the uid is not on the lists of banned uids that may not be used
1598for delivery processes. */
1599
1600if (check_never_users(*uidp, never_users))
1601 nuname = US"never_users";
1602else if (check_never_users(*uidp, fixed_never_users))
1603 nuname = US"fixed_never_users";
1604
1605if (nuname != NULL)
1606 {
1607 common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport "
1608 "is on the %s list", (long int)(*uidp), tp->name, nuname);
1609 return FALSE;
1610 }
1611
1612/* All is well */
1613
1614return TRUE;
1615}
1616
1617
1618
1619
1620/*************************************************
1621* Check the size of a message for a transport *
1622*************************************************/
1623
1624/* Checks that the message isn't too big for the selected transport.
1625This is called only when it is known that the limit is set.
1626
1627Arguments:
1628 tp the transport
1629 addr the (first) address being delivered
1630
1631Returns: OK
1632 DEFER expansion failed or did not yield an integer
1633 FAIL message too big
1634*/
1635
1636int
1637check_message_size(transport_instance *tp, address_item *addr)
1638{
1639int rc = OK;
1640int size_limit;
1641
1642deliver_set_expansions(addr);
d45b1de8 1643size_limit = expand_string_integer(tp->message_size_limit, TRUE);
059ec3d9
PH
1644deliver_set_expansions(NULL);
1645
d45b1de8 1646if (expand_string_message != NULL)
059ec3d9
PH
1647 {
1648 rc = DEFER;
1649 if (size_limit == -1)
1650 addr->message = string_sprintf("failed to expand message_size_limit "
1651 "in %s transport: %s", tp->name, expand_string_message);
1652 else
1653 addr->message = string_sprintf("invalid message_size_limit "
1654 "in %s transport: %s", tp->name, expand_string_message);
1655 }
1656else if (size_limit > 0 && message_size > size_limit)
1657 {
1658 rc = FAIL;
1659 addr->message =
1660 string_sprintf("message is too big (transport limit = %d)",
1661 size_limit);
1662 }
1663
1664return rc;
1665}
1666
1667
1668
1669/*************************************************
1670* Transport-time check for a previous delivery *
1671*************************************************/
1672
1673/* Check that this base address hasn't previously been delivered to its routed
c2c19e9d
PH
1674transport. If it has been delivered, mark it done. The check is necessary at
1675delivery time in order to handle homonymic addresses correctly in cases where
1676the pattern of redirection changes between delivery attempts (so the unique
1677fields change). Non-homonymic previous delivery is detected earlier, at routing
1678time (which saves unnecessary routing).
1679
1680Arguments:
1681 addr the address item
1682 testing TRUE if testing wanted only, without side effects
059ec3d9 1683
059ec3d9
PH
1684Returns: TRUE if previously delivered by the transport
1685*/
1686
1687static BOOL
c2c19e9d 1688previously_transported(address_item *addr, BOOL testing)
059ec3d9
PH
1689{
1690(void)string_format(big_buffer, big_buffer_size, "%s/%s",
1691 addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name);
1692
1693if (tree_search(tree_nonrecipients, big_buffer) != 0)
1694 {
1695 DEBUG(D_deliver|D_route|D_transport)
1696 debug_printf("%s was previously delivered (%s transport): discarded\n",
1697 addr->address, addr->transport->name);
c2c19e9d 1698 if (!testing) child_done(addr, tod_stamp(tod_log));
059ec3d9
PH
1699 return TRUE;
1700 }
1701
1702return FALSE;
1703}
1704
1705
1706
064a94c9
PH
1707/******************************************************
1708* Check for a given header in a header string *
1709******************************************************/
1710
1711/* This function is used when generating quota warnings. The configuration may
1712specify any header lines it likes in quota_warn_message. If certain of them are
1713missing, defaults are inserted, so we need to be able to test for the presence
1714of a given header.
1715
1716Arguments:
1717 hdr the required header name
1718 hstring the header string
1719
1720Returns: TRUE the header is in the string
1721 FALSE the header is not in the string
1722*/
1723
1724static BOOL
1725contains_header(uschar *hdr, uschar *hstring)
1726{
1727int len = Ustrlen(hdr);
1728uschar *p = hstring;
1729while (*p != 0)
1730 {
1731 if (strncmpic(p, hdr, len) == 0)
1732 {
1733 p += len;
1734 while (*p == ' ' || *p == '\t') p++;
1735 if (*p == ':') return TRUE;
1736 }
1737 while (*p != 0 && *p != '\n') p++;
1738 if (*p == '\n') p++;
1739 }
1740return FALSE;
1741}
1742
1743
1744
059ec3d9
PH
1745
1746/*************************************************
1747* Perform a local delivery *
1748*************************************************/
1749
1750/* Each local delivery is performed in a separate process which sets its
1751uid and gid as specified. This is a safer way than simply changing and
1752restoring using seteuid(); there is a body of opinion that seteuid() cannot be
1753used safely. From release 4, Exim no longer makes any use of it. Besides, not
1754all systems have seteuid().
1755
1756If the uid/gid are specified in the transport_instance, they are used; the
1757transport initialization must ensure that either both or neither are set.
1758Otherwise, the values associated with the address are used. If neither are set,
1759it is a configuration error.
1760
1761The transport or the address may specify a home directory (transport over-
1762rides), and if they do, this is set as $home. If neither have set a working
1763directory, this value is used for that as well. Otherwise $home is left unset
1764and the cwd is set to "/" - a directory that should be accessible to all users.
1765
1766Using a separate process makes it more complicated to get error information
1767back. We use a pipe to pass the return code and also an error code and error
1768text string back to the parent process.
1769
1770Arguments:
1771 addr points to an address block for this delivery; for "normal" local
1772 deliveries this is the only address to be delivered, but for
1773 pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe)
1774 a number of addresses can be handled simultaneously, and in this
1775 case addr will point to a chain of addresses with the same
1776 characteristics.
1777
1778 shadowing TRUE if running a shadow transport; this causes output from pipes
1779 to be ignored.
1780
1781Returns: nothing
1782*/
1783
1784static void
1785deliver_local(address_item *addr, BOOL shadowing)
1786{
1787BOOL use_initgroups;
1788uid_t uid;
1789gid_t gid;
1790int status, len, rc;
1791int pfd[2];
1792pid_t pid;
1793uschar *working_directory;
1794address_item *addr2;
1795transport_instance *tp = addr->transport;
1796
1797/* Set up the return path from the errors or sender address. If the transport
1798has its own return path setting, expand it and replace the existing value. */
1799
384152a6
TK
1800if(addr->p.errors_address != NULL)
1801 return_path = addr->p.errors_address;
1802#ifdef EXPERIMENTAL_SRS
1803else if(addr->p.srs_sender != NULL)
1804 return_path = addr->p.srs_sender;
1805#endif
1806else
1807 return_path = sender_address;
059ec3d9
PH
1808
1809if (tp->return_path != NULL)
1810 {
1811 uschar *new_return_path = expand_string(tp->return_path);
1812 if (new_return_path == NULL)
1813 {
1814 if (!expand_string_forcedfail)
1815 {
1816 common_error(TRUE, addr, ERRNO_EXPANDFAIL,
1817 US"Failed to expand return path \"%s\" in %s transport: %s",
1818 tp->return_path, tp->name, expand_string_message);
1819 return;
1820 }
1821 }
1822 else return_path = new_return_path;
1823 }
1824
1825/* For local deliveries, one at a time, the value used for logging can just be
1826set directly, once and for all. */
1827
1828used_return_path = return_path;
1829
1830/* Sort out the uid, gid, and initgroups flag. If an error occurs, the message
1831gets put into the address(es), and the expansions are unset, so we can just
1832return. */
1833
1834if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return;
1835
5418e93b
PH
1836/* See if either the transport or the address specifies a home directory. A
1837home directory set in the address may already be expanded; a flag is set to
1838indicate that. In other cases we must expand it. */
059ec3d9 1839
5418e93b
PH
1840if ((deliver_home = tp->home_dir) != NULL || /* Set in transport, or */
1841 ((deliver_home = addr->home_dir) != NULL && /* Set in address and */
1842 !testflag(addr, af_home_expanded))) /* not expanded */
059ec3d9
PH
1843 {
1844 uschar *rawhome = deliver_home;
1845 deliver_home = NULL; /* in case it contains $home */
1846 deliver_home = expand_string(rawhome);
1847 if (deliver_home == NULL)
1848 {
1849 common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed "
1850 "to expand for %s transport: %s", rawhome, tp->name,
1851 expand_string_message);
1852 return;
1853 }
1854 if (*deliver_home != '/')
1855 {
1856 common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" "
1857 "is not absolute for %s transport", deliver_home, tp->name);
1858 return;
1859 }
1860 }
1861
5418e93b
PH
1862/* See if either the transport or the address specifies a current directory,
1863and if so, expand it. If nothing is set, use the home directory, unless it is
1864also unset in which case use "/", which is assumed to be a directory to which
1865all users have access. It is necessary to be in a visible directory for some
1866operating systems when running pipes, as some commands (e.g. "rm" under Solaris
18672.5) require this. */
1868
1869working_directory = (tp->current_dir != NULL)?
1870 tp->current_dir : addr->current_dir;
059ec3d9
PH
1871
1872if (working_directory != NULL)
1873 {
1874 uschar *raw = working_directory;
1875 working_directory = expand_string(raw);
1876 if (working_directory == NULL)
1877 {
1878 common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" "
1879 "failed to expand for %s transport: %s", raw, tp->name,
1880 expand_string_message);
1881 return;
1882 }
1883 if (*working_directory != '/')
1884 {
1885 common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path "
1886 "\"%s\" is not absolute for %s transport", working_directory, tp->name);
1887 return;
1888 }
1889 }
1890else working_directory = (deliver_home == NULL)? US"/" : deliver_home;
1891
1892/* If one of the return_output flags is set on the transport, create and open a
1893file in the message log directory for the transport to write its output onto.
1894This is mainly used by pipe transports. The file needs to be unique to the
1895address. This feature is not available for shadow transports. */
1896
1897if (!shadowing && (tp->return_output || tp->return_fail_output ||
1898 tp->log_output || tp->log_fail_output))
1899 {
1900 uschar *error;
1901 addr->return_filename =
1902 string_sprintf("%s/msglog/%s/%s-%d-%d", spool_directory, message_subdir,
1903 message_id, getpid(), return_count++);
1904 addr->return_file = open_msglog_file(addr->return_filename, 0400, &error);
1905 if (addr->return_file < 0)
1906 {
1907 common_error(TRUE, addr, errno, US"Unable to %s file for %s transport "
1908 "to return message: %s", error, tp->name, strerror(errno));
1909 return;
1910 }
1911 }
1912
1913/* Create the pipe for inter-process communication. */
1914
1915if (pipe(pfd) != 0)
1916 {
1917 common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s",
1918 strerror(errno));
1919 return;
1920 }
1921
1922/* Now fork the process to do the real work in the subprocess, but first
1923ensure that all cached resources are freed so that the subprocess starts with
1924a clean slate and doesn't interfere with the parent process. */
1925
1926search_tidyup();
1927
1928if ((pid = fork()) == 0)
1929 {
1930 BOOL replicate = TRUE;
1931
1932 /* Prevent core dumps, as we don't want them in users' home directories.
1933 HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that
1934 system. Some experimental/developing systems (e.g. GNU/Hurd) may define
1935 RLIMIT_CORE but not support it in setrlimit(). For such systems, do not
a29e5231
PP
1936 complain if the error is "not supported".
1937
1938 There are two scenarios where changing the max limit has an effect. In one,
1939 the user is using a .forward and invoking a command of their choice via pipe;
1940 for these, we do need the max limit to be 0 unless the admin chooses to
1941 permit an increased limit. In the other, the command is invoked directly by
1942 the transport and is under administrator control, thus being able to raise
1943 the limit aids in debugging. So there's no general always-right answer.
1944
1945 Thus we inhibit core-dumps completely but let individual transports, while
1946 still root, re-raise the limits back up to aid debugging. We make the
1947 default be no core-dumps -- few enough people can use core dumps in
1948 diagnosis that it's reasonable to make them something that has to be explicitly requested.
1949 */
059ec3d9 1950
a7538db1 1951#ifdef RLIMIT_CORE
059ec3d9
PH
1952 struct rlimit rl;
1953 rl.rlim_cur = 0;
1954 rl.rlim_max = 0;
1955 if (setrlimit(RLIMIT_CORE, &rl) < 0)
1956 {
a7538db1 1957# ifdef SETRLIMIT_NOT_SUPPORTED
059ec3d9 1958 if (errno != ENOSYS && errno != ENOTSUP)
a7538db1 1959# endif
059ec3d9
PH
1960 log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s",
1961 strerror(errno));
1962 }
a7538db1 1963#endif
059ec3d9
PH
1964
1965 /* Reset the random number generator, so different processes don't all
1966 have the same sequence. */
1967
1968 random_seed = 0;
1969
1970 /* If the transport has a setup entry, call this first, while still
1971 privileged. (Appendfile uses this to expand quota, for example, while
1972 able to read private files.) */
1973
1974 if (addr->transport->setup != NULL)
1975 {
929ba01c 1976 switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid,
059ec3d9
PH
1977 &(addr->message)))
1978 {
1979 case DEFER:
1980 addr->transport_return = DEFER;
1981 goto PASS_BACK;
1982
1983 case FAIL:
1984 addr->transport_return = PANIC;
1985 goto PASS_BACK;
1986 }
1987 }
1988
1989 /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as
1990 when the process becomes unprivileged, it won't be able to write to the
1991 process log. SIGHUP is ignored throughout exim, except when it is being
1992 run as a daemon. */
1993
1994 signal(SIGINT, SIG_IGN);
1995 signal(SIGTERM, SIG_IGN);
1996 signal(SIGUSR1, SIG_IGN);
1997
1998 /* Close the unwanted half of the pipe, and set close-on-exec for the other
1999 half - for transports that exec things (e.g. pipe). Then set the required
2000 gid/uid. */
2001
f1e894f3 2002 (void)close(pfd[pipe_read]);
ff790e47 2003 (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) |
059ec3d9
PH
2004 FD_CLOEXEC);
2005 exim_setugid(uid, gid, use_initgroups,
2006 string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part,
2007 addr->address, addr->transport->name));
2008
2009 DEBUG(D_deliver)
2010 {
2011 address_item *batched;
2012 debug_printf(" home=%s current=%s\n", deliver_home, working_directory);
2013 for (batched = addr->next; batched != NULL; batched = batched->next)
2014 debug_printf("additional batched address: %s\n", batched->address);
2015 }
2016
2017 /* Set an appropriate working directory. */
2018
2019 if (Uchdir(working_directory) < 0)
2020 {
2021 addr->transport_return = DEFER;
2022 addr->basic_errno = errno;
2023 addr->message = string_sprintf("failed to chdir to %s", working_directory);
2024 }
2025
2026 /* If successful, call the transport */
2027
2028 else
2029 {
2030 BOOL ok = TRUE;
2031 set_process_info("delivering %s to %s using %s", message_id,
2032 addr->local_part, addr->transport->name);
2033
2a47f028
JH
2034 /* Setting this global in the subprocess means we need never clear it */
2035 transport_name = addr->transport->name;
2036
059ec3d9
PH
2037 /* If a transport filter has been specified, set up its argument list.
2038 Any errors will get put into the address, and FALSE yielded. */
2039
2040 if (addr->transport->filter_command != NULL)
2041 {
2042 ok = transport_set_up_command(&transport_filter_argv,
2043 addr->transport->filter_command,
2044 TRUE, PANIC, addr, US"transport filter", NULL);
2045 transport_filter_timeout = addr->transport->filter_timeout;
2046 }
2047 else transport_filter_argv = NULL;
2048
2049 if (ok)
2050 {
2051 debug_print_string(addr->transport->debug_string);
2052 replicate = !(addr->transport->info->code)(addr->transport, addr);
2053 }
2054 }
2055
2056 /* Pass the results back down the pipe. If necessary, first replicate the
2057 status in the top address to the others in the batch. The label is the
2058 subject of a goto when a call to the transport's setup function fails. We
2059 pass the pointer to the transport back in case it got changed as a result of
2060 file_format in appendfile. */
2061
2062 PASS_BACK:
2063
2064 if (replicate) replicate_status(addr);
2065 for (addr2 = addr; addr2 != NULL; addr2 = addr2->next)
2066 {
2067 int i;
2068 int local_part_length = Ustrlen(addr2->local_part);
2069 uschar *s;
1ac6b2e7 2070 int ret;
059ec3d9 2071
1ac6b2e7
JH
2072 if( (ret = write(pfd[pipe_write], (void *)&(addr2->transport_return), sizeof(int))) != sizeof(int)
2073 || (ret = write(pfd[pipe_write], (void *)&transport_count, sizeof(transport_count))) != sizeof(transport_count)
2074 || (ret = write(pfd[pipe_write], (void *)&(addr2->flags), sizeof(addr2->flags))) != sizeof(addr2->flags)
2075 || (ret = write(pfd[pipe_write], (void *)&(addr2->basic_errno), sizeof(int))) != sizeof(int)
2076 || (ret = write(pfd[pipe_write], (void *)&(addr2->more_errno), sizeof(int))) != sizeof(int)
2077 || (ret = write(pfd[pipe_write], (void *)&(addr2->special_action), sizeof(int))) != sizeof(int)
2078 || (ret = write(pfd[pipe_write], (void *)&(addr2->transport),
2079 sizeof(transport_instance *))) != sizeof(transport_instance *)
059ec3d9
PH
2080
2081 /* For a file delivery, pass back the local part, in case the original
2082 was only part of the final delivery path. This gives more complete
2083 logging. */
2084
1ac6b2e7
JH
2085 || (testflag(addr2, af_file)
2086 && ( (ret = write(pfd[pipe_write], (void *)&local_part_length, sizeof(int))) != sizeof(int)
2087 || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length
2088 )
2089 )
2090 )
2091 log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n",
2092 ret == -1 ? strerror(errno) : "short write");
059ec3d9
PH
2093
2094 /* Now any messages */
2095
2096 for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message)
2097 {
2098 int message_length = (s == NULL)? 0 : Ustrlen(s) + 1;
1ac6b2e7
JH
2099 if( (ret = write(pfd[pipe_write], (void *)&message_length, sizeof(int))) != sizeof(int)
2100 || (message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length)
2101 )
2102 log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n",
2103 ret == -1 ? strerror(errno) : "short write");
059ec3d9
PH
2104 }
2105 }
2106
2107 /* OK, this process is now done. Free any cached resources that it opened,
2108 and close the pipe we were writing down before exiting. */
2109
f1e894f3 2110 (void)close(pfd[pipe_write]);
059ec3d9
PH
2111 search_tidyup();
2112 exit(EXIT_SUCCESS);
2113 }
2114
2115/* Back in the main process: panic if the fork did not succeed. This seems
2116better than returning an error - if forking is failing it is probably best
2117not to try other deliveries for this message. */
2118
2119if (pid < 0)
2120 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s",
2121 addr->address);
2122
2123/* Read the pipe to get the delivery status codes and error messages. Our copy
2124of the writing end must be closed first, as otherwise read() won't return zero
2125on an empty pipe. We check that a status exists for each address before
2126overwriting the address structure. If data is missing, the default DEFER status
2127will remain. Afterwards, close the reading end. */
2128
f1e894f3 2129(void)close(pfd[pipe_write]);
059ec3d9
PH
2130
2131for (addr2 = addr; addr2 != NULL; addr2 = addr2->next)
2132 {
2133 len = read(pfd[pipe_read], (void *)&status, sizeof(int));
2134 if (len > 0)
2135 {
2136 int i;
2137 uschar **sptr;
2138
2139 addr2->transport_return = status;
2140 len = read(pfd[pipe_read], (void *)&transport_count,
2141 sizeof(transport_count));
2142 len = read(pfd[pipe_read], (void *)&(addr2->flags), sizeof(addr2->flags));
2143 len = read(pfd[pipe_read], (void *)&(addr2->basic_errno), sizeof(int));
2144 len = read(pfd[pipe_read], (void *)&(addr2->more_errno), sizeof(int));
2145 len = read(pfd[pipe_read], (void *)&(addr2->special_action), sizeof(int));
2146 len = read(pfd[pipe_read], (void *)&(addr2->transport),
2147 sizeof(transport_instance *));
2148
2149 if (testflag(addr2, af_file))
2150 {
2151 int local_part_length;
2152 len = read(pfd[pipe_read], (void *)&local_part_length, sizeof(int));
2153 len = read(pfd[pipe_read], (void *)big_buffer, local_part_length);
2154 big_buffer[local_part_length] = 0;
2155 addr2->local_part = string_copy(big_buffer);
2156 }
2157
2158 for (i = 0, sptr = &(addr2->message); i < 2;
2159 i++, sptr = &(addr2->user_message))
2160 {
2161 int message_length;
2162 len = read(pfd[pipe_read], (void *)&message_length, sizeof(int));
2163 if (message_length > 0)
2164 {
2165 len = read(pfd[pipe_read], (void *)big_buffer, message_length);
2166 if (len > 0) *sptr = string_copy(big_buffer);
2167 }
2168 }
2169 }
2170
2171 else
2172 {
2173 log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s "
2174 "from delivery subprocess", addr2->unique);
2175 break;
2176 }
2177 }
2178
f1e894f3 2179(void)close(pfd[pipe_read]);
059ec3d9
PH
2180
2181/* Unless shadowing, write all successful addresses immediately to the journal
2182file, to ensure they are recorded asap. For homonymic addresses, use the base
2183address plus the transport name. Failure to write the journal is panic-worthy,
2184but don't stop, as it may prove possible subsequently to update the spool file
2185in order to record the delivery. */
2186
2187if (!shadowing)
2188 {
2189 for (addr2 = addr; addr2 != NULL; addr2 = addr2->next)
2190 {
2191 if (addr2->transport_return != OK) continue;
2192
2193 if (testflag(addr2, af_homonym))
2194 sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name);
2195 else
2196 sprintf(CS big_buffer, "%.500s\n", addr2->unique);
2197
2198 /* In the test harness, wait just a bit to let the subprocess finish off
2199 any debug output etc first. */
2200
2201 if (running_in_test_harness) millisleep(300);
2202
2203 DEBUG(D_deliver) debug_printf("journalling %s", big_buffer);
2204 len = Ustrlen(big_buffer);
2205 if (write(journal_fd, big_buffer, len) != len)
2206 log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s",
2207 big_buffer, strerror(errno));
2208 }
2209
2210 /* Ensure the journal file is pushed out to disk. */
2211
54fc8428 2212 if (EXIMfsync(journal_fd) < 0)
059ec3d9
PH
2213 log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s",
2214 strerror(errno));
2215 }
2216
2217/* Wait for the process to finish. If it terminates with a non-zero code,
2218freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the
2219status values of all the addresses as they are. Take care to handle the case
2220when the subprocess doesn't seem to exist. This has been seen on one system
2221when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that
2222happens, wait() doesn't recognize the termination of child processes. Exim now
2223resets SIGCHLD to SIG_DFL, but this code should still be robust. */
2224
2225while ((rc = wait(&status)) != pid)
2226 {
2227 if (rc < 0 && errno == ECHILD) /* Process has vanished */
2228 {
2229 log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly",
2230 addr->transport->driver_name);
2231 status = 0;
2232 break;
2233 }
2234 }
2235
2236if ((status & 0xffff) != 0)
2237 {
2238 int msb = (status >> 8) & 255;
2239 int lsb = status & 255;
2240 int code = (msb == 0)? (lsb & 0x7f) : msb;
2241 if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT))
2242 addr->special_action = SPECIAL_FREEZE;
2243 log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero "
2244 "status 0x%04x: %s %d",
2245 addr->transport->driver_name,
2246 status,
2247 (msb == 0)? "terminated by signal" : "exit code",
2248 code);
2249 }
2250
2251/* If SPECIAL_WARN is set in the top address, send a warning message. */
2252
2253if (addr->special_action == SPECIAL_WARN &&
2254 addr->transport->warn_message != NULL)
2255 {
2256 int fd;
2257 uschar *warn_message;
2258
2259 DEBUG(D_deliver) debug_printf("Warning message requested by transport\n");
2260
2261 warn_message = expand_string(addr->transport->warn_message);
2262 if (warn_message == NULL)
2263 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning "
2264 "message for %s transport): %s", addr->transport->warn_message,
2265 addr->transport->name, expand_string_message);
2266 else
2267 {
2268 pid_t pid = child_open_exim(&fd);
2269 if (pid > 0)
2270 {
2271 FILE *f = fdopen(fd, "wb");
064a94c9
PH
2272 if (errors_reply_to != NULL &&
2273 !contains_header(US"Reply-To", warn_message))
059ec3d9 2274 fprintf(f, "Reply-To: %s\n", errors_reply_to);
456682f5 2275 fprintf(f, "Auto-Submitted: auto-replied\n");
0e22dfd1 2276 if (!contains_header(US"From", warn_message)) moan_write_from(f);
059ec3d9
PH
2277 fprintf(f, "%s", CS warn_message);
2278
2279 /* Close and wait for child process to complete, without a timeout. */
2280
f1e894f3 2281 (void)fclose(f);
059ec3d9
PH
2282 (void)child_close(pid, 0);
2283 }
2284 }
2285
2286 addr->special_action = SPECIAL_NONE;
2287 }
2288}
2289
2290
2291
2292/*************************************************
2293* Do local deliveries *
2294*************************************************/
2295
2296/* This function processes the list of addresses in addr_local. True local
2297deliveries are always done one address at a time. However, local deliveries can
2298be batched up in some cases. Typically this is when writing batched SMTP output
2299files for use by some external transport mechanism, or when running local
2300deliveries over LMTP.
2301
2302Arguments: None
2303Returns: Nothing
2304*/
2305
2306static void
2307do_local_deliveries(void)
2308{
2309open_db dbblock;
2310open_db *dbm_file = NULL;
2311time_t now = time(NULL);
2312
2313/* Loop until we have exhausted the supply of local deliveries */
2314
2315while (addr_local != NULL)
2316 {
2317 time_t delivery_start;
2318 int deliver_time;
2319 address_item *addr2, *addr3, *nextaddr;
2320 int logflags = LOG_MAIN;
2321 int logchar = dont_deliver? '*' : '=';
2322 transport_instance *tp;
2323
2324 /* Pick the first undelivered address off the chain */
2325
2326 address_item *addr = addr_local;
2327 addr_local = addr->next;
2328 addr->next = NULL;
2329
2330 DEBUG(D_deliver|D_transport)
2331 debug_printf("--------> %s <--------\n", addr->address);
2332
2333 /* An internal disaster if there is no transport. Should not occur! */
2334
2335 if ((tp = addr->transport) == NULL)
2336 {
2337 logflags |= LOG_PANIC;
2338 disable_logging = FALSE; /* Jic */
2339 addr->message =
2340 (addr->router != NULL)?
2341 string_sprintf("No transport set by %s router", addr->router->name)
2342 :
2343 string_sprintf("No transport set by system filter");
2344 post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0);
2345 continue;
2346 }
2347
2348 /* Check that this base address hasn't previously been delivered to this
2349 transport. The check is necessary at this point to handle homonymic addresses
2350 correctly in cases where the pattern of redirection changes between delivery
2351 attempts. Non-homonymic previous delivery is detected earlier, at routing
2352 time. */
2353
c2c19e9d 2354 if (previously_transported(addr, FALSE)) continue;
059ec3d9
PH
2355
2356 /* There are weird cases where logging is disabled */
2357
2358 disable_logging = tp->disable_logging;
2359
f7fd3850
PH
2360 /* Check for batched addresses and possible amalgamation. Skip all the work
2361 if either batch_max <= 1 or there aren't any other addresses for local
2362 delivery. */
059ec3d9 2363
f7fd3850 2364 if (tp->batch_max > 1 && addr_local != NULL)
059ec3d9
PH
2365 {
2366 int batch_count = 1;
2367 BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain");
f7fd3850
PH
2368 BOOL uses_lp = (testflag(addr, af_pfr) &&
2369 (testflag(addr, af_file) || addr->local_part[0] == '|')) ||
2370 readconf_depends((driver_instance *)tp, US"local_part");
059ec3d9
PH
2371 uschar *batch_id = NULL;
2372 address_item **anchor = &addr_local;
2373 address_item *last = addr;
2374 address_item *next;
2375
2376 /* Expand the batch_id string for comparison with other addresses.
2377 Expansion failure suppresses batching. */
2378
2379 if (tp->batch_id != NULL)
2380 {
2381 deliver_set_expansions(addr);
2382 batch_id = expand_string(tp->batch_id);
2383 deliver_set_expansions(NULL);
2384 if (batch_id == NULL)
2385 {
2386 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
2387 "in %s transport (%s): %s", tp->name, addr->address,
2388 expand_string_message);
2389 batch_count = tp->batch_max;
2390 }
2391 }
2392
2393 /* Until we reach the batch_max limit, pick off addresses which have the
2394 same characteristics. These are:
2395
2396 same transport
7816e254 2397 not previously delivered (see comment about 50 lines above)
059ec3d9 2398 same local part if the transport's configuration contains $local_part
f7fd3850 2399 or if this is a file or pipe delivery from a redirection
059ec3d9
PH
2400 same domain if the transport's configuration contains $domain
2401 same errors address
2402 same additional headers
2403 same headers to be removed
2404 same uid/gid for running the transport
2405 same first host if a host list is set
2406 */
2407
2408 while ((next = *anchor) != NULL && batch_count < tp->batch_max)
2409 {
2410 BOOL ok =
2411 tp == next->transport &&
c2c19e9d 2412 !previously_transported(next, TRUE) &&
f7fd3850 2413 (addr->flags & (af_pfr|af_file)) == (next->flags & (af_pfr|af_file)) &&
059ec3d9
PH
2414 (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0) &&
2415 (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0) &&
2416 same_strings(next->p.errors_address, addr->p.errors_address) &&
2417 same_headers(next->p.extra_headers, addr->p.extra_headers) &&
2418 same_strings(next->p.remove_headers, addr->p.remove_headers) &&
2419 same_ugid(tp, addr, next) &&
2420 ((addr->host_list == NULL && next->host_list == NULL) ||
2421 (addr->host_list != NULL && next->host_list != NULL &&
2422 Ustrcmp(addr->host_list->name, next->host_list->name) == 0));
2423
2424 /* If the transport has a batch_id setting, batch_id will be non-NULL
2425 from the expansion outside the loop. Expand for this address and compare.
2426 Expansion failure makes this address ineligible for batching. */
2427
2428 if (ok && batch_id != NULL)
2429 {
2430 uschar *bid;
2431 address_item *save_nextnext = next->next;
2432 next->next = NULL; /* Expansion for a single address */
2433 deliver_set_expansions(next);
2434 next->next = save_nextnext;
2435 bid = expand_string(tp->batch_id);
2436 deliver_set_expansions(NULL);
2437 if (bid == NULL)
2438 {
2439 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
2440 "in %s transport (%s): %s", tp->name, next->address,
2441 expand_string_message);
2442 ok = FALSE;
2443 }
2444 else ok = (Ustrcmp(batch_id, bid) == 0);
2445 }
2446
2447 /* Take address into batch if OK. */
2448
2449 if (ok)
2450 {
2451 *anchor = next->next; /* Include the address */
2452 next->next = NULL;
2453 last->next = next;
2454 last = next;
2455 batch_count++;
2456 }
2457 else anchor = &(next->next); /* Skip the address */
2458 }
2459 }
2460
2461 /* We now have one or more addresses that can be delivered in a batch. Check
2462 whether the transport is prepared to accept a message of this size. If not,
2463 fail them all forthwith. If the expansion fails, or does not yield an
2464 integer, defer delivery. */
2465
2466 if (tp->message_size_limit != NULL)
2467 {
2468 int rc = check_message_size(tp, addr);
2469 if (rc != OK)
2470 {
2471 replicate_status(addr);
2472 while (addr != NULL)
2473 {
2474 addr2 = addr->next;
2475 post_process_one(addr, rc, logflags, DTYPE_TRANSPORT, 0);
2476 addr = addr2;
2477 }
2478 continue; /* With next batch of addresses */
2479 }
2480 }
2481
2482 /* If we are not running the queue, or if forcing, all deliveries will be
2483 attempted. Otherwise, we must respect the retry times for each address. Even
2484 when not doing this, we need to set up the retry key string, and determine
2485 whether a retry record exists, because after a successful delivery, a delete
2486 retry item must be set up. Keep the retry database open only for the duration
2487 of these checks, rather than for all local deliveries, because some local
2488 deliveries (e.g. to pipes) can take a substantial time. */
2489
2490 dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE);
2491 if (dbm_file == NULL)
2492 {
2493 DEBUG(D_deliver|D_retry|D_hints_lookup)
2494 debug_printf("no retry data available\n");
2495 }
2496
2497 addr2 = addr;
2498 addr3 = NULL;
2499 while (addr2 != NULL)
2500 {
2501 BOOL ok = TRUE; /* to deliver this address */
2502 uschar *retry_key;
2503
2504 /* Set up the retry key to include the domain or not, and change its
2505 leading character from "R" to "T". Must make a copy before doing this,
2506 because the old key may be pointed to from a "delete" retry item after
2507 a routing delay. */
2508
2509 retry_key = string_copy(
2510 (tp->retry_use_local_part)? addr2->address_retry_key :
2511 addr2->domain_retry_key);
2512 *retry_key = 'T';
2513
2514 /* Inspect the retry data. If there is no hints file, delivery happens. */
2515
2516 if (dbm_file != NULL)
2517 {
2518 dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key);
2519
2520 /* If there is no retry record, delivery happens. If there is,
2521 remember it exists so it can be deleted after a successful delivery. */
2522
2523 if (retry_record != NULL)
2524 {
2525 setflag(addr2, af_lt_retry_exists);
2526
2527 /* A retry record exists for this address. If queue running and not
2528 forcing, inspect its contents. If the record is too old, or if its
2529 retry time has come, or if it has passed its cutoff time, delivery
2530 will go ahead. */
2531
2532 DEBUG(D_retry)
2533 {
ea49d0e1
PH
2534 debug_printf("retry record exists: age=%s ",
2535 readconf_printtime(now - retry_record->time_stamp));
2536 debug_printf("(max %s)\n", readconf_printtime(retry_data_expire));
2537 debug_printf(" time to retry = %s expired = %d\n",
2538 readconf_printtime(retry_record->next_try - now),
2539 retry_record->expired);
059ec3d9
PH
2540 }
2541
2542 if (queue_running && !deliver_force)
2543 {
2544 ok = (now - retry_record->time_stamp > retry_data_expire) ||
2545 (now >= retry_record->next_try) ||
2546 retry_record->expired;
2547
2548 /* If we haven't reached the retry time, there is one more check
1ddeb334 2549 to do, which is for the ultimate address timeout. */
059ec3d9
PH
2550
2551 if (!ok)
ba9af0af
TF
2552 ok = retry_ultimate_address_timeout(retry_key, addr2->domain,
2553 retry_record, now);
059ec3d9
PH
2554 }
2555 }
2556 else DEBUG(D_retry) debug_printf("no retry record exists\n");
2557 }
2558
2559 /* This address is to be delivered. Leave it on the chain. */
2560
2561 if (ok)
2562 {
2563 addr3 = addr2;
2564 addr2 = addr2->next;
2565 }
2566
2567 /* This address is to be deferred. Take it out of the chain, and
2568 post-process it as complete. Must take it out of the chain first,
2569 because post processing puts it on another chain. */
2570
2571 else
2572 {
2573 address_item *this = addr2;
2574 this->message = US"Retry time not yet reached";
2575 this->basic_errno = ERRNO_LRETRY;
2576 if (addr3 == NULL) addr2 = addr = addr2->next;
2577 else addr2 = addr3->next = addr2->next;
2578 post_process_one(this, DEFER, logflags, DTYPE_TRANSPORT, 0);
2579 }
2580 }
2581
2582 if (dbm_file != NULL) dbfn_close(dbm_file);
2583
2584 /* If there are no addresses left on the chain, they all deferred. Loop
2585 for the next set of addresses. */
2586
2587 if (addr == NULL) continue;
2588
2589 /* So, finally, we do have some addresses that can be passed to the
2590 transport. Before doing so, set up variables that are relevant to a
2591 single delivery. */
2592
2593 deliver_set_expansions(addr);
2594 delivery_start = time(NULL);
2595 deliver_local(addr, FALSE);
2596 deliver_time = (int)(time(NULL) - delivery_start);
2597
2598 /* If a shadow transport (which must perforce be another local transport), is
2599 defined, and its condition is met, we must pass the message to the shadow
2600 too, but only those addresses that succeeded. We do this by making a new
2601 chain of addresses - also to keep the original chain uncontaminated. We must
2602 use a chain rather than doing it one by one, because the shadow transport may
2603 batch.
2604
2605 NOTE: if the condition fails because of a lookup defer, there is nothing we
2606 can do! */
2607
2608 if (tp->shadow != NULL &&
2609 (tp->shadow_condition == NULL ||
2610 expand_check_condition(tp->shadow_condition, tp->name, US"transport")))
2611 {
2612 transport_instance *stp;
2613 address_item *shadow_addr = NULL;
2614 address_item **last = &shadow_addr;
2615
2616 for (stp = transports; stp != NULL; stp = stp->next)
2617 if (Ustrcmp(stp->name, tp->shadow) == 0) break;
2618
2619 if (stp == NULL)
2620 log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ",
2621 tp->shadow);
2622
2623 /* Pick off the addresses that have succeeded, and make clones. Put into
2624 the shadow_message field a pointer to the shadow_message field of the real
2625 address. */
2626
2627 else for (addr2 = addr; addr2 != NULL; addr2 = addr2->next)
2628 {
2629 if (addr2->transport_return != OK) continue;
2630 addr3 = store_get(sizeof(address_item));
2631 *addr3 = *addr2;
2632 addr3->next = NULL;
2633 addr3->shadow_message = (uschar *)(&(addr2->shadow_message));
2634 addr3->transport = stp;
2635 addr3->transport_return = DEFER;
2636 addr3->return_filename = NULL;
2637 addr3->return_file = -1;
2638 *last = addr3;
2639 last = &(addr3->next);
2640 }
2641
2642 /* If we found any addresses to shadow, run the delivery, and stick any
2643 message back into the shadow_message field in the original. */
2644
2645 if (shadow_addr != NULL)
2646 {
2647 int save_count = transport_count;
2648
2649 DEBUG(D_deliver|D_transport)
2650 debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n");
2651 deliver_local(shadow_addr, TRUE);
2652
2653 for(; shadow_addr != NULL; shadow_addr = shadow_addr->next)
2654 {
2655 int sresult = shadow_addr->transport_return;
2656 *((uschar **)(shadow_addr->shadow_message)) = (sresult == OK)?
2657 string_sprintf(" ST=%s", stp->name) :
2658 string_sprintf(" ST=%s (%s%s%s)", stp->name,
2659 (shadow_addr->basic_errno <= 0)?
2660 US"" : US strerror(shadow_addr->basic_errno),
2661 (shadow_addr->basic_errno <= 0 || shadow_addr->message == NULL)?
2662 US"" : US": ",
2663 (shadow_addr->message != NULL)? shadow_addr->message :
2664 (shadow_addr->basic_errno <= 0)? US"unknown error" : US"");
2665
2666 DEBUG(D_deliver|D_transport)
2667 debug_printf("%s shadow transport returned %s for %s\n",
2668 stp->name,
2669 (sresult == OK)? "OK" :
2670 (sresult == DEFER)? "DEFER" :
2671 (sresult == FAIL)? "FAIL" :
2672 (sresult == PANIC)? "PANIC" : "?",
2673 shadow_addr->address);
2674 }
2675
2676 DEBUG(D_deliver|D_transport)
2677 debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n");
2678
2679 transport_count = save_count; /* Restore original transport count */
2680 }
2681 }
2682
2683 /* Cancel the expansions that were set up for the delivery. */
2684
2685 deliver_set_expansions(NULL);
2686
2687 /* Now we can process the results of the real transport. We must take each
2688 address off the chain first, because post_process_one() puts it on another
2689 chain. */
2690
2691 for (addr2 = addr; addr2 != NULL; addr2 = nextaddr)
2692 {
2693 int result = addr2->transport_return;
2694 nextaddr = addr2->next;
2695
2696 DEBUG(D_deliver|D_transport)
2697 debug_printf("%s transport returned %s for %s\n",
2698 tp->name,
2699 (result == OK)? "OK" :
2700 (result == DEFER)? "DEFER" :
2701 (result == FAIL)? "FAIL" :
2702 (result == PANIC)? "PANIC" : "?",
2703 addr2->address);
2704
2705 /* If there is a retry_record, or if delivery is deferred, build a retry
2706 item for setting a new retry time or deleting the old retry record from
2707 the database. These items are handled all together after all addresses
2708 have been handled (so the database is open just for a short time for
2709 updating). */
2710
2711 if (result == DEFER || testflag(addr2, af_lt_retry_exists))
2712 {
2713 int flags = (result == DEFER)? 0 : rf_delete;
2714 uschar *retry_key = string_copy((tp->retry_use_local_part)?
2715 addr2->address_retry_key : addr2->domain_retry_key);
2716 *retry_key = 'T';
2717 retry_add_item(addr2, retry_key, flags);
2718 }
2719
2720 /* Done with this address */
2721
2722 if (result == OK) addr2->more_errno = deliver_time;
2723 post_process_one(addr2, result, logflags, DTYPE_TRANSPORT, logchar);
2724
2725 /* If a pipe delivery generated text to be sent back, the result may be
2726 changed to FAIL, and we must copy this for subsequent addresses in the
2727 batch. */
2728
2729 if (addr2->transport_return != result)
2730 {
2731 for (addr3 = nextaddr; addr3 != NULL; addr3 = addr3->next)
2732 {
2733 addr3->transport_return = addr2->transport_return;
2734 addr3->basic_errno = addr2->basic_errno;
2735 addr3->message = addr2->message;
2736 }
2737 result = addr2->transport_return;
2738 }
2739
2740 /* Whether or not the result was changed to FAIL, we need to copy the
2741 return_file value from the first address into all the addresses of the
2742 batch, so they are all listed in the error message. */
2743
2744 addr2->return_file = addr->return_file;
2745
2746 /* Change log character for recording successful deliveries. */
2747
2748 if (result == OK) logchar = '-';
2749 }
2750 } /* Loop back for next batch of addresses */
2751}
2752
2753
2754
2755
2756/*************************************************
2757* Sort remote deliveries *
2758*************************************************/
2759
2760/* This function is called if remote_sort_domains is set. It arranges that the
2761chain of addresses for remote deliveries is ordered according to the strings
2762specified. Try to make this shuffling reasonably efficient by handling
2763sequences of addresses rather than just single ones.
2764
2765Arguments: None
2766Returns: Nothing
2767*/
2768
2769static void
2770sort_remote_deliveries(void)
2771{
2772int sep = 0;
2773address_item **aptr = &addr_remote;
2774uschar *listptr = remote_sort_domains;
2775uschar *pattern;
2776uschar patbuf[256];
2777
2778while (*aptr != NULL &&
2779 (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf)))
2780 != NULL)
2781 {
2782 address_item *moved = NULL;
2783 address_item **bptr = &moved;
2784
2785 while (*aptr != NULL)
2786 {
2787 address_item **next;
2788 deliver_domain = (*aptr)->domain; /* set $domain */
2789 if (match_isinlist(deliver_domain, &pattern, UCHAR_MAX+1,
2790 &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK)
2791 {
2792 aptr = &((*aptr)->next);
2793 continue;
2794 }
2795
2796 next = &((*aptr)->next);
2797 while (*next != NULL &&
2798 (deliver_domain = (*next)->domain, /* Set $domain */
2799 match_isinlist(deliver_domain, &pattern, UCHAR_MAX+1,
2800 &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK)
2801 next = &((*next)->next);
2802
2803 /* If the batch of non-matchers is at the end, add on any that were
2804 extracted further up the chain, and end this iteration. Otherwise,
2805 extract them from the chain and hang on the moved chain. */
2806
2807 if (*next == NULL)
2808 {
2809 *next = moved;
2810 break;
2811 }
2812
2813 *bptr = *aptr;
2814 *aptr = *next;
2815 *next = NULL;
2816 bptr = next;
2817 aptr = &((*aptr)->next);
2818 }
2819
2820 /* If the loop ended because the final address matched, *aptr will
2821 be NULL. Add on to the end any extracted non-matching addresses. If
2822 *aptr is not NULL, the loop ended via "break" when *next is null, that
2823 is, there was a string of non-matching addresses at the end. In this
2824 case the extracted addresses have already been added on the end. */
2825
2826 if (*aptr == NULL) *aptr = moved;
2827 }
2828
2829DEBUG(D_deliver)
2830 {
2831 address_item *addr;
2832 debug_printf("remote addresses after sorting:\n");
2833 for (addr = addr_remote; addr != NULL; addr = addr->next)
2834 debug_printf(" %s\n", addr->address);
2835 }
2836}
2837
2838
2839
2840/*************************************************
2841* Read from pipe for remote delivery subprocess *
2842*************************************************/
2843
2844/* This function is called when the subprocess is complete, but can also be
2845called before it is complete, in order to empty a pipe that is full (to prevent
2846deadlock). It must therefore keep track of its progress in the parlist data
2847block.
2848
2849We read the pipe to get the delivery status codes and a possible error message
2850for each address, optionally preceded by unusability data for the hosts and
2851also by optional retry data.
2852
2853Read in large chunks into the big buffer and then scan through, interpreting
2854the data therein. In most cases, only a single read will be necessary. No
1c5466b9
PH
2855individual item will ever be anywhere near 2500 bytes in length, so by ensuring
2856that we read the next chunk when there is less than 2500 bytes left in the
2857non-final chunk, we can assume each item is complete in the buffer before
2858handling it. Each item is written using a single write(), which is atomic for
2859small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and
2860often bigger) so even if we are reading while the subprocess is still going, we
2861should never have only a partial item in the buffer.
059ec3d9
PH
2862
2863Argument:
2864 poffset the offset of the parlist item
2865 eop TRUE if the process has completed
2866
2867Returns: TRUE if the terminating 'Z' item has been read,
2868 or there has been a disaster (i.e. no more data needed);
2869 FALSE otherwise
2870*/
2871
2872static BOOL
2873par_read_pipe(int poffset, BOOL eop)
2874{
2875host_item *h;
2876pardata *p = parlist + poffset;
2877address_item *addrlist = p->addrlist;
2878address_item *addr = p->addr;
2879pid_t pid = p->pid;
2880int fd = p->fd;
2881uschar *endptr = big_buffer;
2882uschar *ptr = endptr;
2883uschar *msg = p->msg;
2884BOOL done = p->done;
2885BOOL unfinished = TRUE;
2886
2887/* Loop through all items, reading from the pipe when necessary. The pipe
2888is set up to be non-blocking, but there are two different Unix mechanisms in
2889use. Exim uses O_NONBLOCK if it is defined. This returns 0 for end of file,
2890and EAGAIN for no more data. If O_NONBLOCK is not defined, Exim uses O_NDELAY,
2891which returns 0 for both end of file and no more data. We distinguish the
2892two cases by taking 0 as end of file only when we know the process has
2893completed.
2894
2895Each separate item is written to the pipe in a single write(), and as they are
2896all short items, the writes will all be atomic and we should never find
8e669ac1
PH
2897ourselves in the position of having read an incomplete item. "Short" in this
2898case can mean up to about 1K in the case when there is a long error message
1c5466b9 2899associated with an address. */
059ec3d9
PH
2900
2901DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n",
2902 (int)p->pid, eop? "ended" : "not ended");
2903
2904while (!done)
2905 {
2906 retry_item *r, **rp;
2907 int remaining = endptr - ptr;
2908
2909 /* Read (first time) or top up the chars in the buffer if necessary.
2910 There will be only one read if we get all the available data (i.e. don't
2911 fill the buffer completely). */
2912
1c5466b9 2913 if (remaining < 2500 && unfinished)
059ec3d9
PH
2914 {
2915 int len;
2916 int available = big_buffer_size - remaining;
2917
2918 if (remaining > 0) memmove(big_buffer, ptr, remaining);
2919
2920 ptr = big_buffer;
2921 endptr = big_buffer + remaining;
2922 len = read(fd, endptr, available);
2923
2924 DEBUG(D_deliver) debug_printf("read() yielded %d\n", len);
2925
2926 /* If the result is EAGAIN and the process is not complete, just
2927 stop reading any more and process what we have already. */
2928
2929 if (len < 0)
2930 {
2931 if (!eop && errno == EAGAIN) len = 0; else
2932 {
2933 msg = string_sprintf("failed to read pipe from transport process "
2934 "%d for transport %s: %s", pid, addr->transport->driver_name,
2935 strerror(errno));
2936 break;
2937 }
2938 }
2939
2940 /* If the length is zero (eof or no-more-data), just process what we
2941 already have. Note that if the process is still running and we have
2942 read all the data in the pipe (but less that "available") then we
2943 won't read any more, as "unfinished" will get set FALSE. */
2944
2945 endptr += len;
2946 unfinished = len == available;
2947 }
2948
2949 /* If we are at the end of the available data, exit the loop. */
2950
2951 if (ptr >= endptr) break;
2952
2953 /* Handle each possible type of item, assuming the complete item is
2954 available in store. */
2955
2956 switch (*ptr++)
2957 {
2958 /* Host items exist only if any hosts were marked unusable. Match
2959 up by checking the IP address. */
2960
2961 case 'H':
2962 for (h = addrlist->host_list; h != NULL; h = h->next)
2963 {
2964 if (h->address == NULL || Ustrcmp(h->address, ptr+2) != 0) continue;
2965 h->status = ptr[0];
2966 h->why = ptr[1];
2967 }
2968 ptr += 2;
2969 while (*ptr++);
2970 break;
2971
2972 /* Retry items are sent in a preceding R item for each address. This is
2973 kept separate to keep each message short enough to guarantee it won't
2974 be split in the pipe. Hopefully, in the majority of cases, there won't in
2975 fact be any retry items at all.
2976
2977 The complete set of retry items might include an item to delete a
2978 routing retry if there was a previous routing delay. However, routing
2979 retries are also used when a remote transport identifies an address error.
2980 In that case, there may also be an "add" item for the same key. Arrange
2981 that a "delete" item is dropped in favour of an "add" item. */
2982
2983 case 'R':
2984 if (addr == NULL) goto ADDR_MISMATCH;
2985
2986 DEBUG(D_deliver|D_retry)
2987 debug_printf("reading retry information for %s from subprocess\n",
2988 ptr+1);
2989
2990 /* Cut out any "delete" items on the list. */
2991
2992 for (rp = &(addr->retries); (r = *rp) != NULL; rp = &(r->next))
2993 {
2994 if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */
2995 {
2996 if ((r->flags & rf_delete) == 0) break; /* It was not "delete" */
2997 *rp = r->next; /* Excise a delete item */
2998 DEBUG(D_deliver|D_retry)
2999 debug_printf(" existing delete item dropped\n");
3000 }
3001 }
3002
3003 /* We want to add a delete item only if there is no non-delete item;
3004 however we still have to step ptr through the data. */
3005
3006 if (r == NULL || (*ptr & rf_delete) == 0)
3007 {
3008 r = store_get(sizeof(retry_item));
3009 r->next = addr->retries;
3010 addr->retries = r;
3011 r->flags = *ptr++;
3012 r->key = string_copy(ptr);
3013 while (*ptr++);
3014 memcpy(&(r->basic_errno), ptr, sizeof(r->basic_errno));
3015 ptr += sizeof(r->basic_errno);
3016 memcpy(&(r->more_errno), ptr, sizeof(r->more_errno));
3017 ptr += sizeof(r->more_errno);
3018 r->message = (*ptr)? string_copy(ptr) : NULL;
3019 DEBUG(D_deliver|D_retry)
3020 debug_printf(" added %s item\n",
3021 ((r->flags & rf_delete) == 0)? "retry" : "delete");
3022 }
3023
3024 else
3025 {
3026 DEBUG(D_deliver|D_retry)
3027 debug_printf(" delete item not added: non-delete item exists\n");
3028 ptr++;
3029 while(*ptr++);
3030 ptr += sizeof(r->basic_errno) + sizeof(r->more_errno);
3031 }
3032
3033 while(*ptr++);
3034 break;
3035
3036 /* Put the amount of data written into the parlist block */
3037
3038 case 'S':
3039 memcpy(&(p->transport_count), ptr, sizeof(transport_count));
3040 ptr += sizeof(transport_count);
3041 break;
3042
3043 /* Address items are in the order of items on the address chain. We
3044 remember the current address value in case this function is called
3045 several times to empty the pipe in stages. Information about delivery
3046 over TLS is sent in a preceding X item for each address. We don't put
3047 it in with the other info, in order to keep each message short enough to
3048 guarantee it won't be split in the pipe. */
3049
a7538db1 3050#ifdef SUPPORT_TLS
059ec3d9 3051 case 'X':
9d1c15ef
JH
3052 if (addr == NULL) goto ADDR_MISMATCH; /* Below, in 'A' handler */
3053 switch (*ptr++)
3054 {
3055 case '1':
3056 addr->cipher = NULL;
3057 addr->peerdn = NULL;
3058
3059 if (*ptr)
3060 addr->cipher = string_copy(ptr);
3061 while (*ptr++);
3062 if (*ptr)
9d1c15ef 3063 addr->peerdn = string_copy(ptr);
9d1c15ef
JH
3064 break;
3065
3066 case '2':
3067 addr->peercert = NULL;
3068 if (*ptr)
3069 (void) tls_import_cert(ptr, &addr->peercert);
3070 break;
3071
3072 case '3':
3073 addr->ourcert = NULL;
3074 if (*ptr)
3075 (void) tls_import_cert(ptr, &addr->ourcert);
3076 break;
018058b2 3077
a7538db1 3078# ifndef DISABLE_OCSP
018058b2
JH
3079 case '4':
3080 addr->ocsp = OCSP_NOT_REQ;
3081 if (*ptr)
3082 addr->ocsp = *ptr - '0';
3083 break;
a7538db1 3084# endif
9d1c15ef 3085 }
059ec3d9
PH
3086 while (*ptr++);
3087 break;
a7538db1 3088#endif /*SUPPORT_TLS*/
059ec3d9 3089
6f123593
JH
3090 case 'C': /* client authenticator information */
3091 switch (*ptr++)
9d1c15ef
JH
3092 {
3093 case '1':
3094 addr->authenticator = (*ptr)? string_copy(ptr) : NULL;
3095 break;
3096 case '2':
3097 addr->auth_id = (*ptr)? string_copy(ptr) : NULL;
3098 break;
3099 case '3':
3100 addr->auth_sndr = (*ptr)? string_copy(ptr) : NULL;
3101 break;
3102 }
6f123593
JH
3103 while (*ptr++);
3104 break;
3105
8ccd00b1 3106#ifndef DISABLE_PRDR
fd98a5c6 3107 case 'P':
8ccd00b1
JH
3108 addr->flags |= af_prdr_used;
3109 break;
fd98a5c6
JH
3110#endif
3111
a7538db1 3112#ifdef EXPERIMENTAL_DSN
6c1c3d1d
WB
3113 case 'D':
3114 if (addr == NULL) break;
3115 memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware));
3116 ptr += sizeof(addr->dsn_aware);
3117 DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware);
3118 break;
a7538db1 3119#endif
6c1c3d1d 3120
059ec3d9
PH
3121 case 'A':
3122 if (addr == NULL)
3123 {
3124 ADDR_MISMATCH:
3125 msg = string_sprintf("address count mismatch for data read from pipe "
3126 "for transport process %d for transport %s", pid,
3127 addrlist->transport->driver_name);
3128 done = TRUE;
3129 break;
3130 }
3131
3132 addr->transport_return = *ptr++;
3133 addr->special_action = *ptr++;
3134 memcpy(&(addr->basic_errno), ptr, sizeof(addr->basic_errno));
3135 ptr += sizeof(addr->basic_errno);
3136 memcpy(&(addr->more_errno), ptr, sizeof(addr->more_errno));
3137 ptr += sizeof(addr->more_errno);
3138 memcpy(&(addr->flags), ptr, sizeof(addr->flags));
3139 ptr += sizeof(addr->flags);
3140 addr->message = (*ptr)? string_copy(ptr) : NULL;
3141 while(*ptr++);
3142 addr->user_message = (*ptr)? string_copy(ptr) : NULL;
3143 while(*ptr++);
3144
783b385f 3145 /* Always two strings for host information, followed by the port number and DNSSEC mark */
059ec3d9
PH
3146
3147 if (*ptr != 0)
3148 {
3149 h = store_get(sizeof(host_item));
3150 h->name = string_copy(ptr);
3151 while (*ptr++);
3152 h->address = string_copy(ptr);
3153 while(*ptr++);
3154 memcpy(&(h->port), ptr, sizeof(h->port));
3155 ptr += sizeof(h->port);
783b385f
JH
3156 h->dnssec = *ptr == '2' ? DS_YES
3157 : *ptr == '1' ? DS_NO
3158 : DS_UNK;
3159 ptr++;
059ec3d9
PH
3160 addr->host_used = h;
3161 }
3162 else ptr++;
3163
3164 /* Finished with this address */
3165
3166 addr = addr->next;
3167 break;
3168
3169 /* Z marks the logical end of the data. It is followed by '0' if
3170 continue_transport was NULL at the end of transporting, otherwise '1'.
3171 We need to know when it becomes NULL during a delivery down a passed SMTP
3172 channel so that we don't try to pass anything more down it. Of course, for
3173 most normal messages it will remain NULL all the time. */
3174
3175 case 'Z':
3176 if (*ptr == '0')
3177 {
3178 continue_transport = NULL;
3179 continue_hostname = NULL;
3180 }
3181 done = TRUE;
3182 DEBUG(D_deliver) debug_printf("Z%c item read\n", *ptr);
3183 break;
3184
3185 /* Anything else is a disaster. */
3186
3187 default:
3188 msg = string_sprintf("malformed data (%d) read from pipe for transport "
3189 "process %d for transport %s", ptr[-1], pid,
3190 addr->transport->driver_name);
3191 done = TRUE;
3192 break;
3193 }
3194 }
3195
3196/* The done flag is inspected externally, to determine whether or not to
3197call the function again when the process finishes. */
3198
3199p->done = done;
3200
3201/* If the process hadn't finished, and we haven't seen the end of the data
3202or suffered a disaster, update the rest of the state, and return FALSE to
3203indicate "not finished". */
3204
3205if (!eop && !done)
3206 {
3207 p->addr = addr;
3208 p->msg = msg;
3209 return FALSE;
3210 }
3211
3212/* Close our end of the pipe, to prevent deadlock if the far end is still
3213pushing stuff into it. */
3214
f1e894f3 3215(void)close(fd);
059ec3d9
PH
3216p->fd = -1;
3217
3218/* If we have finished without error, but haven't had data for every address,
3219something is wrong. */
3220
3221if (msg == NULL && addr != NULL)
3222 msg = string_sprintf("insufficient address data read from pipe "
3223 "for transport process %d for transport %s", pid,
3224 addr->transport->driver_name);
3225
3226/* If an error message is set, something has gone wrong in getting back
3227the delivery data. Put the message into each address and freeze it. */
3228
3229if (msg != NULL)
3230 {
3231 for (addr = addrlist; addr != NULL; addr = addr->next)
3232 {
3233 addr->transport_return = DEFER;
3234 addr->special_action = SPECIAL_FREEZE;
3235 addr->message = msg;
3236 }
3237 }
3238
3239/* Return TRUE to indicate we have got all we need from this process, even
3240if it hasn't actually finished yet. */
3241
3242return TRUE;
3243}
3244
3245
3246
3247/*************************************************
3248* Post-process a set of remote addresses *
3249*************************************************/
3250
3251/* Do what has to be done immediately after a remote delivery for each set of
3252addresses, then re-write the spool if necessary. Note that post_process_one
3253puts the address on an appropriate queue; hence we must fish off the next
3254one first. This function is also called if there is a problem with setting
3255up a subprocess to do a remote delivery in parallel. In this case, the final
3256argument contains a message, and the action must be forced to DEFER.
3257
3258Argument:
3259 addr pointer to chain of address items
3260 logflags flags for logging
3261 msg NULL for normal cases; -> error message for unexpected problems
3262 fallback TRUE if processing fallback hosts
3263
3264Returns: nothing
3265*/
3266
3267static void
3268remote_post_process(address_item *addr, int logflags, uschar *msg,
3269 BOOL fallback)
3270{
3271host_item *h;
3272
3273/* If any host addresses were found to be unusable, add them to the unusable
3274tree so that subsequent deliveries don't try them. */
3275
3276for (h = addr->host_list; h != NULL; h = h->next)
3277 {
3278 if (h->address == NULL) continue;
3279 if (h->status >= hstatus_unusable) tree_add_unusable(h);
3280 }
3281
3282/* Now handle each address on the chain. The transport has placed '=' or '-'
3283into the special_action field for each successful delivery. */
3284
3285while (addr != NULL)
3286 {
3287 address_item *next = addr->next;
3288
3289 /* If msg == NULL (normal processing) and the result is DEFER and we are
3290 processing the main hosts and there are fallback hosts available, put the
3291 address on the list for fallback delivery. */
3292
3293 if (addr->transport_return == DEFER &&
3294 addr->fallback_hosts != NULL &&
3295 !fallback &&
3296 msg == NULL)
3297 {
3298 addr->host_list = addr->fallback_hosts;
3299 addr->next = addr_fallback;
3300 addr_fallback = addr;
3301 DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address);
3302 }
3303
3304 /* If msg is set (=> unexpected problem), set it in the address before
3305 doing the ordinary post processing. */
3306
3307 else
3308 {
3309 if (msg != NULL)
3310 {
3311 addr->message = msg;
3312 addr->transport_return = DEFER;
3313 }
3314 (void)post_process_one(addr, addr->transport_return, logflags,
3315 DTYPE_TRANSPORT, addr->special_action);
3316 }
3317
3318 /* Next address */
3319
3320 addr = next;
3321 }
3322
3323/* If we have just delivered down a passed SMTP channel, and that was
3324the last address, the channel will have been closed down. Now that
3325we have logged that delivery, set continue_sequence to 1 so that
3326any subsequent deliveries don't get "*" incorrectly logged. */
3327
3328if (continue_transport == NULL) continue_sequence = 1;
3329}
3330
3331
3332
3333/*************************************************
3334* Wait for one remote delivery subprocess *
3335*************************************************/
3336
3337/* This function is called while doing remote deliveries when either the
3338maximum number of processes exist and we need one to complete so that another
3339can be created, or when waiting for the last ones to complete. It must wait for
3340the completion of one subprocess, empty the control block slot, and return a
3341pointer to the address chain.
3342
3343Arguments: none
3344Returns: pointer to the chain of addresses handled by the process;
3345 NULL if no subprocess found - this is an unexpected error
3346*/
3347
3348static address_item *
3349par_wait(void)
3350{
3351int poffset, status;
3352address_item *addr, *addrlist;
3353pid_t pid;
3354
3355set_process_info("delivering %s: waiting for a remote delivery subprocess "
3356 "to finish", message_id);
3357
3358/* Loop until either a subprocess completes, or there are no subprocesses in
3359existence - in which case give an error return. We cannot proceed just by
3360waiting for a completion, because a subprocess may have filled up its pipe, and
3361be waiting for it to be emptied. Therefore, if no processes have finished, we
3362wait for one of the pipes to acquire some data by calling select(), with a
3363timeout just in case.
3364
3365The simple approach is just to iterate after reading data from a ready pipe.
3366This leads to non-ideal behaviour when the subprocess has written its final Z
3367item, closed the pipe, and is in the process of exiting (the common case). A
3368call to waitpid() yields nothing completed, but select() shows the pipe ready -
3369reading it yields EOF, so you end up with busy-waiting until the subprocess has
3370actually finished.
3371
3372To avoid this, if all the data that is needed has been read from a subprocess
3373after select(), an explicit wait() for it is done. We know that all it is doing
3374is writing to the pipe and then exiting, so the wait should not be long.
3375
3376The non-blocking waitpid() is to some extent just insurance; if we could
3377reliably detect end-of-file on the pipe, we could always know when to do a
3378blocking wait() for a completed process. However, because some systems use
3379NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to
3380use code that functions without the need to recognize EOF.
3381
3382There's a double loop here just in case we end up with a process that is not in
3383the list of remote delivery processes. Something has obviously gone wrong if
3384this is the case. (For example, a process that is incorrectly left over from
3385routing or local deliveries might be found.) The damage can be minimized by
3386looping back and looking for another process. If there aren't any, the error
3387return will happen. */
3388
3389for (;;) /* Normally we do not repeat this loop */
3390 {
3391 while ((pid = waitpid(-1, &status, WNOHANG)) <= 0)
3392 {
3393 struct timeval tv;
3394 fd_set select_pipes;
3395 int maxpipe, readycount;
3396
3397 /* A return value of -1 can mean several things. If errno != ECHILD, it
3398 either means invalid options (which we discount), or that this process was
3399 interrupted by a signal. Just loop to try the waitpid() again.
3400
3401 If errno == ECHILD, waitpid() is telling us that there are no subprocesses
3402 in existence. This should never happen, and is an unexpected error.
3403 However, there is a nasty complication when running under Linux. If "strace
3404 -f" is being used under Linux to trace this process and its children,
3405 subprocesses are "stolen" from their parents and become the children of the
3406 tracing process. A general wait such as the one we've just obeyed returns
3407 as if there are no children while subprocesses are running. Once a
3408 subprocess completes, it is restored to the parent, and waitpid(-1) finds
3409 it. Thanks to Joachim Wieland for finding all this out and suggesting a
3410 palliative.
3411
3412 This does not happen using "truss" on Solaris, nor (I think) with other
3413 tracing facilities on other OS. It seems to be specific to Linux.
3414
3415 What we do to get round this is to use kill() to see if any of our
3416 subprocesses are still in existence. If kill() gives an OK return, we know
3417 it must be for one of our processes - it can't be for a re-use of the pid,
3418 because if our process had finished, waitpid() would have found it. If any
3419 of our subprocesses are in existence, we proceed to use select() as if
3420 waitpid() had returned zero. I think this is safe. */
3421
3422 if (pid < 0)
3423 {
3424 if (errno != ECHILD) continue; /* Repeats the waitpid() */
3425
3426 DEBUG(D_deliver)
3427 debug_printf("waitpid() returned -1/ECHILD: checking explicitly "
3428 "for process existence\n");
3429
3430 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3431 {
3432 if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0)
3433 {
3434 DEBUG(D_deliver) debug_printf("process %d still exists: assume "
3435 "stolen by strace\n", (int)pid);
3436 break; /* With poffset set */
3437 }
3438 }
3439
3440 if (poffset >= remote_max_parallel)
3441 {
3442 DEBUG(D_deliver) debug_printf("*** no delivery children found\n");
3443 return NULL; /* This is the error return */
3444 }
3445 }
3446
3447 /* A pid value greater than 0 breaks the "while" loop. A negative value has
3448 been handled above. A return value of zero means that there is at least one
3449 subprocess, but there are no completed subprocesses. See if any pipes are
3450 ready with any data for reading. */
3451
3452 DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n");
3453
3454 maxpipe = 0;
3455 FD_ZERO(&select_pipes);
3456 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3457 {
3458 if (parlist[poffset].pid != 0)
3459 {
3460 int fd = parlist[poffset].fd;
3461 FD_SET(fd, &select_pipes);
3462 if (fd > maxpipe) maxpipe = fd;
3463 }
3464 }
3465
3466 /* Stick in a 60-second timeout, just in case. */
3467
3468 tv.tv_sec = 60;
3469 tv.tv_usec = 0;
3470
3471 readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes,
3472 NULL, NULL, &tv);
3473
3474 /* Scan through the pipes and read any that are ready; use the count
3475 returned by select() to stop when there are no more. Select() can return
3476 with no processes (e.g. if interrupted). This shouldn't matter.
3477
3478 If par_read_pipe() returns TRUE, it means that either the terminating Z was
3479 read, or there was a disaster. In either case, we are finished with this
3480 process. Do an explicit wait() for the process and break the main loop if
3481 it succeeds.
3482
3483 It turns out that we have to deal with the case of an interrupted system
3484 call, which can happen on some operating systems if the signal handling is
3485 set up to do that by default. */
3486
3487 for (poffset = 0;
3488 readycount > 0 && poffset < remote_max_parallel;
3489 poffset++)
3490 {
3491 if ((pid = parlist[poffset].pid) != 0 &&
3492 FD_ISSET(parlist[poffset].fd, &select_pipes))
3493 {
3494 readycount--;
3495 if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */
3496 {
3497 for (;;) /* Loop for signals */
3498 {
3499 pid_t endedpid = waitpid(pid, &status, 0);
3500 if (endedpid == pid) goto PROCESS_DONE;
3501 if (endedpid != (pid_t)(-1) || errno != EINTR)
3502 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return "
3503 "%d (errno = %d) from waitpid() for process %d",
3504 (int)endedpid, errno, (int)pid);
3505 }
3506 }
3507 }
3508 }
3509
3510 /* Now go back and look for a completed subprocess again. */
3511 }
3512
3513 /* A completed process was detected by the non-blocking waitpid(). Find the
3514 data block that corresponds to this subprocess. */
3515
3516 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3517 if (pid == parlist[poffset].pid) break;
3518
3519 /* Found the data block; this is a known remote delivery process. We don't
3520 need to repeat the outer loop. This should be what normally happens. */
3521
3522 if (poffset < remote_max_parallel) break;
3523
3524 /* This situation is an error, but it's probably better to carry on looking
3525 for another process than to give up (as we used to do). */
3526
3527 log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote "
3528 "transport process list", pid);
3529 } /* End of the "for" loop */
3530
3531/* Come here when all the data was completely read after a select(), and
3532the process in pid has been wait()ed for. */
3533
3534PROCESS_DONE:
3535
3536DEBUG(D_deliver)
3537 {
3538 if (status == 0)
3539 debug_printf("remote delivery process %d ended\n", (int)pid);
3540 else
3541 debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid,
3542 status);
3543 }
3544
3545set_process_info("delivering %s", message_id);
3546
3547/* Get the chain of processed addresses */
3548
3549addrlist = parlist[poffset].addrlist;
3550
3551/* If the process did not finish cleanly, record an error and freeze (except
3552for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed,
3553in case the delivery did actually happen. */
3554
3555if ((status & 0xffff) != 0)
3556 {
3557 uschar *msg;
3558 int msb = (status >> 8) & 255;
3559 int lsb = status & 255;
3560 int code = (msb == 0)? (lsb & 0x7f) : msb;
3561
3562 msg = string_sprintf("%s transport process returned non-zero status 0x%04x: "
3563 "%s %d",
3564 addrlist->transport->driver_name,
3565 status,
3566 (msb == 0)? "terminated by signal" : "exit code",
3567 code);
3568
3569 if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT))
3570 addrlist->special_action = SPECIAL_FREEZE;
3571
3572 for (addr = addrlist; addr != NULL; addr = addr->next)
3573 {
3574 addr->transport_return = DEFER;
3575 addr->message = msg;
3576 }
3577
3578 remove_journal = FALSE;
3579 }
3580
3581/* Else complete reading the pipe to get the result of the delivery, if all
3582the data has not yet been obtained. */
3583
3584else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE);
3585
3586/* Put the data count and return path into globals, mark the data slot unused,
3587decrement the count of subprocesses, and return the address chain. */
3588
3589transport_count = parlist[poffset].transport_count;
3590used_return_path = parlist[poffset].return_path;
3591parlist[poffset].pid = 0;
3592parcount--;
3593return addrlist;
3594}
3595
3596
3597
3598/*************************************************
3599* Wait for subprocesses and post-process *
3600*************************************************/
3601
3602/* This function waits for subprocesses until the number that are still running
3603is below a given threshold. For each complete subprocess, the addresses are
3604post-processed. If we can't find a running process, there is some shambles.
3605Better not bomb out, as that might lead to multiple copies of the message. Just
3606log and proceed as if all done.
3607
3608Arguments:
3609 max maximum number of subprocesses to leave running
3610 fallback TRUE if processing fallback hosts
3611
3612Returns: nothing
3613*/
3614
3615static void
3616par_reduce(int max, BOOL fallback)
3617{
3618while (parcount > max)
3619 {
3620 address_item *doneaddr = par_wait();
3621 if (doneaddr == NULL)
3622 {
3623 log_write(0, LOG_MAIN|LOG_PANIC,
3624 "remote delivery process count got out of step");
3625 parcount = 0;
3626 }
3627 else remote_post_process(doneaddr, LOG_MAIN, NULL, fallback);
3628 }
3629}
3630
3631
3632
3633
1ac6b2e7
JH
3634static void
3635rmt_dlv_checked_write(int fd, void * buf, int size)
3636{
3637int ret = write(fd, buf, size);
3638if(ret != size)
3639 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed writing transport result to pipe: %s\n",
3640 ret == -1 ? strerror(errno) : "short write");
3641}
3642
059ec3d9
PH
3643/*************************************************
3644* Do remote deliveries *
3645*************************************************/
3646
3647/* This function is called to process the addresses in addr_remote. We must
3648pick off the queue all addresses that have the same transport, remote
3649destination, and errors address, and hand them to the transport in one go,
3650subject to some configured limitations. If this is a run to continue delivering
3651to an existing delivery channel, skip all but those addresses that can go to
3652that channel. The skipped addresses just get deferred.
3653
3654If mua_wrapper is set, all addresses must be able to be sent in a single
3655transaction. If not, this function yields FALSE.
3656
3657In Exim 4, remote deliveries are always done in separate processes, even
3658if remote_max_parallel = 1 or if there's only one delivery to do. The reason
3659is so that the base process can retain privilege. This makes the
3660implementation of fallback transports feasible (though not initially done.)
3661
3662We create up to the configured number of subprocesses, each of which passes
3663back the delivery state via a pipe. (However, when sending down an existing
3664connection, remote_max_parallel is forced to 1.)
3665
3666Arguments:
3667 fallback TRUE if processing fallback hosts
3668
3669Returns: TRUE normally
3670 FALSE if mua_wrapper is set and the addresses cannot all be sent
3671 in one transaction
3672*/
3673
3674static BOOL
3675do_remote_deliveries(BOOL fallback)
3676{
3677int parmax;
3678int delivery_count;
3679int poffset;
3680
3681parcount = 0; /* Number of executing subprocesses */
3682
3683/* When sending down an existing channel, only do one delivery at a time.
3684We use a local variable (parmax) to hold the maximum number of processes;
3685this gets reduced from remote_max_parallel if we can't create enough pipes. */
3686
3687if (continue_transport != NULL) remote_max_parallel = 1;
3688parmax = remote_max_parallel;
3689
3690/* If the data for keeping a list of processes hasn't yet been
3691set up, do so. */
3692
3693if (parlist == NULL)
3694 {
3695 parlist = store_get(remote_max_parallel * sizeof(pardata));
3696 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3697 parlist[poffset].pid = 0;
3698 }
3699
3700/* Now loop for each remote delivery */
3701
3702for (delivery_count = 0; addr_remote != NULL; delivery_count++)
3703 {
3704 pid_t pid;
3705 uid_t uid;
3706 gid_t gid;
3707 int pfd[2];
3708 int address_count = 1;
3709 int address_count_max;
3710 BOOL multi_domain;
3711 BOOL use_initgroups;
3712 BOOL pipe_done = FALSE;
3713 transport_instance *tp;
3714 address_item **anchor = &addr_remote;
3715 address_item *addr = addr_remote;
3716 address_item *last = addr;
3717 address_item *next;
3718
3719 /* Pull the first address right off the list. */
3720
3721 addr_remote = addr->next;
3722 addr->next = NULL;
3723
3724 DEBUG(D_deliver|D_transport)
3725 debug_printf("--------> %s <--------\n", addr->address);
3726
3727 /* If no transport has been set, there has been a big screw-up somewhere. */
3728
3729 if ((tp = addr->transport) == NULL)
3730 {
3731 disable_logging = FALSE; /* Jic */
3732 remote_post_process(addr, LOG_MAIN|LOG_PANIC,
3733 US"No transport set by router", fallback);
3734 continue;
3735 }
3736
3737 /* Check that this base address hasn't previously been delivered to this
3738 transport. The check is necessary at this point to handle homonymic addresses
3739 correctly in cases where the pattern of redirection changes between delivery
3740 attempts. Non-homonymic previous delivery is detected earlier, at routing
3741 time. */
3742
c2c19e9d 3743 if (previously_transported(addr, FALSE)) continue;
059ec3d9
PH
3744
3745 /* Force failure if the message is too big. */
3746
3747 if (tp->message_size_limit != NULL)
3748 {
3749 int rc = check_message_size(tp, addr);
3750 if (rc != OK)
3751 {
3752 addr->transport_return = rc;
3753 remote_post_process(addr, LOG_MAIN, NULL, fallback);
3754 continue;
3755 }
3756 }
3757
3758 /* Get the flag which specifies whether the transport can handle different
3759 domains that nevertheless resolve to the same set of hosts. */
3760
3761 multi_domain = tp->multi_domain;
3762
3763 /* Get the maximum it can handle in one envelope, with zero meaning
3764 unlimited, which is forced for the MUA wrapper case. */
3765
3766 address_count_max = tp->max_addresses;
3767 if (address_count_max == 0 || mua_wrapper) address_count_max = 999999;
3768
3769
3770 /************************************************************************/
3771 /***** This is slightly experimental code, but should be safe. *****/
3772
3773 /* The address_count_max value is the maximum number of addresses that the
3774 transport can send in one envelope. However, the transport must be capable of
3775 dealing with any number of addresses. If the number it gets exceeds its
3776 envelope limitation, it must send multiple copies of the message. This can be
3777 done over a single connection for SMTP, so uses less resources than making
3778 multiple connections. On the other hand, if remote_max_parallel is greater
3779 than one, it is perhaps a good idea to use parallel processing to move the
3780 message faster, even if that results in multiple simultaneous connections to
3781 the same host.
3782
3783 How can we come to some compromise between these two ideals? What we do is to
3784 limit the number of addresses passed to a single instance of a transport to
3785 the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total
3786 number of addresses routed to remote transports divided by
3787 remote_max_parallel. For example, if the message has 100 remote recipients,
3788 remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at
3789 once. But if rcpt_max is 100, we could send up to 100.
3790
3791 Of course, not all the remotely addresses in a message are going to go to the
3792 same set of hosts (except in smarthost configurations), so this is just a
3793 heuristic way of dividing up the work.
3794
3795 Furthermore (1), because this may not be wanted in some cases, and also to
3796 cope with really pathological cases, there is also a limit to the number of
3797 messages that are sent over one connection. This is the same limit that is
3798 used when sending several different messages over the same connection.
3799 Continue_sequence is set when in this situation, to the number sent so
3800 far, including this message.
3801
3802 Furthermore (2), when somebody explicitly sets the maximum value to 1, it
3803 is probably because they are using VERP, in which case they want to pass only
3804 one address at a time to the transport, in order to be able to use
3805 $local_part and $domain in constructing a new return path. We could test for
3806 the use of these variables, but as it is so likely they will be used when the
3807 maximum is 1, we don't bother. Just leave the value alone. */
3808
3809 if (address_count_max != 1 &&
3810 address_count_max < remote_delivery_count/remote_max_parallel)
3811 {
3812 int new_max = remote_delivery_count/remote_max_parallel;
3813 int message_max = tp->connection_max_messages;
3814 if (connection_max_messages >= 0) message_max = connection_max_messages;
3815 message_max -= continue_sequence - 1;
3816 if (message_max > 0 && new_max > address_count_max * message_max)
3817 new_max = address_count_max * message_max;
3818 address_count_max = new_max;
3819 }
3820
3821 /************************************************************************/
3822
3823
3824 /* Pick off all addresses which have the same transport, errors address,
3825 destination, and extra headers. In some cases they point to the same host
3826 list, but we also need to check for identical host lists generated from
3827 entirely different domains. The host list pointers can be NULL in the case
3828 where the hosts are defined in the transport. There is also a configured
3829 maximum limit of addresses that can be handled at once (see comments above
3830 for how it is computed). */
3831
3832 while ((next = *anchor) != NULL && address_count < address_count_max)
3833 {
3834 if ((multi_domain || Ustrcmp(next->domain, addr->domain) == 0)
3835 &&
3836 tp == next->transport
3837 &&
3838 same_hosts(next->host_list, addr->host_list)
3839 &&
3840 same_strings(next->p.errors_address, addr->p.errors_address)
3841 &&
3842 same_headers(next->p.extra_headers, addr->p.extra_headers)
3843 &&
3844 same_ugid(tp, next, addr)
3845 &&
3846 (next->p.remove_headers == addr->p.remove_headers ||
3847 (next->p.remove_headers != NULL &&
3848 addr->p.remove_headers != NULL &&
3849 Ustrcmp(next->p.remove_headers, addr->p.remove_headers) == 0)))
3850 {
3851 *anchor = next->next;
3852 next->next = NULL;
3853 next->first = addr; /* remember top one (for retry processing) */
3854 last->next = next;
3855 last = next;
3856 address_count++;
3857 }
3858 else anchor = &(next->next);
3859 }
3860
3861 /* If we are acting as an MUA wrapper, all addresses must go in a single
3862 transaction. If not, put them back on the chain and yield FALSE. */
3863
3864 if (mua_wrapper && addr_remote != NULL)
3865 {
3866 last->next = addr_remote;
3867 addr_remote = addr;
3868 return FALSE;
3869 }
3870
3871 /* Set up the expansion variables for this set of addresses */
3872
3873 deliver_set_expansions(addr);
3874
018c60d7
JH
3875 /* Ensure any transport-set auth info is fresh */
3876 addr->authenticator = addr->auth_id = addr->auth_sndr = NULL;
3877
059ec3d9
PH
3878 /* Compute the return path, expanding a new one if required. The old one
3879 must be set first, as it might be referred to in the expansion. */
3880
384152a6
TK
3881 if(addr->p.errors_address != NULL)
3882 return_path = addr->p.errors_address;
3883#ifdef EXPERIMENTAL_SRS
3884 else if(addr->p.srs_sender != NULL)
3885 return_path = addr->p.srs_sender;
3886#endif
3887 else
3888 return_path = sender_address;
059ec3d9
PH
3889
3890 if (tp->return_path != NULL)
3891 {
3892 uschar *new_return_path = expand_string(tp->return_path);
3893 if (new_return_path == NULL)
3894 {
3895 if (!expand_string_forcedfail)
3896 {
3897 remote_post_process(addr, LOG_MAIN|LOG_PANIC,
3898 string_sprintf("Failed to expand return path \"%s\": %s",
3899 tp->return_path, expand_string_message), fallback);
3900 continue;
3901 }
3902 }
3903 else return_path = new_return_path;
3904 }
3905
929ba01c
PH
3906 /* Find the uid, gid, and use_initgroups setting for this transport. Failure
3907 logs and sets up error messages, so we just post-process and continue with
3908 the next address. */
3909
3910 if (!findugid(addr, tp, &uid, &gid, &use_initgroups))
3911 {
3912 remote_post_process(addr, LOG_MAIN|LOG_PANIC, NULL, fallback);
3913 continue;
3914 }
3915
059ec3d9
PH
3916 /* If this transport has a setup function, call it now so that it gets
3917 run in this process and not in any subprocess. That way, the results of
929ba01c
PH
3918 any setup that are retained by the transport can be reusable. One of the
3919 things the setup does is to set the fallback host lists in the addresses.
3920 That is why it is called at this point, before the continue delivery
3921 processing, because that might use the fallback hosts. */
059ec3d9
PH
3922
3923 if (tp->setup != NULL)
929ba01c 3924 (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL));
059ec3d9
PH
3925
3926 /* If this is a run to continue delivery down an already-established
3927 channel, check that this set of addresses matches the transport and
3928 the channel. If it does not, defer the addresses. If a host list exists,
3929 we must check that the continue host is on the list. Otherwise, the
3930 host is set in the transport. */
3931
3932 continue_more = FALSE; /* In case got set for the last lot */
3933 if (continue_transport != NULL)
3934 {
3935 BOOL ok = Ustrcmp(continue_transport, tp->name) == 0;
3936 if (ok && addr->host_list != NULL)
3937 {
3938 host_item *h;
3939 ok = FALSE;
3940 for (h = addr->host_list; h != NULL; h = h->next)
3941 {
3942 if (Ustrcmp(h->name, continue_hostname) == 0)
3943 { ok = TRUE; break; }
3944 }
3945 }
3946
3947 /* Addresses not suitable; defer or queue for fallback hosts (which
3948 might be the continue host) and skip to next address. */
3949
3950 if (!ok)
3951 {
3952 DEBUG(D_deliver) debug_printf("not suitable for continue_transport\n");
3953 next = addr;
3954
3955 if (addr->fallback_hosts != NULL && !fallback)
3956 {
3957 for (;;)
3958 {
3959 next->host_list = next->fallback_hosts;
3960 DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address);
3961 if (next->next == NULL) break;
3962 next = next->next;
3963 }
3964 next->next = addr_fallback;
3965 addr_fallback = addr;
3966 }
3967
3968 else
3969 {
3970 while (next->next != NULL) next = next->next;
3971 next->next = addr_defer;
3972 addr_defer = addr;
3973 }
3974
3975 continue;
3976 }
3977
3978 /* Set a flag indicating whether there are further addresses that list
3979 the continued host. This tells the transport to leave the channel open,
3980 but not to pass it to another delivery process. */
3981
3982 for (next = addr_remote; next != NULL; next = next->next)
3983 {
3984 host_item *h;
3985 for (h = next->host_list; h != NULL; h = h->next)
3986 {
3987 if (Ustrcmp(h->name, continue_hostname) == 0)
3988 { continue_more = TRUE; break; }
3989 }
3990 }
3991 }
3992
3993 /* The transports set up the process info themselves as they may connect
3994 to more than one remote machine. They also have to set up the filter
3995 arguments, if required, so that the host name and address are available
3996 for expansion. */
3997
3998 transport_filter_argv = NULL;
3999
059ec3d9
PH
4000 /* Create the pipe for inter-process communication. If pipe creation
4001 fails, it is probably because the value of remote_max_parallel is so
4002 large that too many file descriptors for pipes have been created. Arrange
4003 to wait for a process to finish, and then try again. If we still can't
4004 create a pipe when all processes have finished, break the retry loop. */
4005
4006 while (!pipe_done)
4007 {
4008 if (pipe(pfd) == 0) pipe_done = TRUE;
4009 else if (parcount > 0) parmax = parcount;
4010 else break;
4011
4012 /* We need to make the reading end of the pipe non-blocking. There are
4013 two different options for this. Exim is cunningly (I hope!) coded so
4014 that it can use either of them, though it prefers O_NONBLOCK, which
4015 distinguishes between EOF and no-more-data. */
4016
a7538db1 4017#ifdef O_NONBLOCK
ff790e47 4018 (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK);
a7538db1 4019#else
ff790e47 4020 (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY);
a7538db1 4021#endif
059ec3d9
PH
4022
4023 /* If the maximum number of subprocesses already exist, wait for a process
4024 to finish. If we ran out of file descriptors, parmax will have been reduced
4025 from its initial value of remote_max_parallel. */
4026
4027 par_reduce(parmax - 1, fallback);
4028 }
4029
4030 /* If we failed to create a pipe and there were no processes to wait
4031 for, we have to give up on this one. Do this outside the above loop
4032 so that we can continue the main loop. */
4033
4034 if (!pipe_done)
4035 {
4036 remote_post_process(addr, LOG_MAIN|LOG_PANIC,
4037 string_sprintf("unable to create pipe: %s", strerror(errno)), fallback);
4038 continue;
4039 }
4040
4041 /* Find a free slot in the pardata list. Must do this after the possible
4042 waiting for processes to finish, because a terminating process will free
4043 up a slot. */
4044
4045 for (poffset = 0; poffset < remote_max_parallel; poffset++)
4046 if (parlist[poffset].pid == 0) break;
4047
4048 /* If there isn't one, there has been a horrible disaster. */
4049
4050 if (poffset >= remote_max_parallel)
4051 {
f1e894f3
PH
4052 (void)close(pfd[pipe_write]);
4053 (void)close(pfd[pipe_read]);
059ec3d9
PH
4054 remote_post_process(addr, LOG_MAIN|LOG_PANIC,
4055 US"Unexpectedly no free subprocess slot", fallback);
4056 continue;
4057 }
4058
4059 /* Now fork a subprocess to do the remote delivery, but before doing so,
4060 ensure that any cached resourses are released so as not to interfere with
4061 what happens in the subprocess. */
4062
4063 search_tidyup();
4064
4065 if ((pid = fork()) == 0)
4066 {
4067 int fd = pfd[pipe_write];
4068 host_item *h;
4069
2a47f028
JH
4070 /* Setting this global in the subprocess means we need never clear it */
4071 transport_name = tp->name;
059ec3d9 4072
2a47f028 4073 /* There are weird circumstances in which logging is disabled */
059ec3d9
PH
4074 disable_logging = tp->disable_logging;
4075
4076 /* Show pids on debug output if parallelism possible */
4077
4078 if (parmax > 1 && (parcount > 0 || addr_remote != NULL))
4079 {
4080 DEBUG(D_any|D_v) debug_selector |= D_pid;
4081 DEBUG(D_deliver) debug_printf("Remote delivery process started\n");
4082 }
4083
4084 /* Reset the random number generator, so different processes don't all
4085 have the same sequence. In the test harness we want different, but
4086 predictable settings for each delivery process, so do something explicit
4087 here rather they rely on the fixed reset in the random number function. */
4088
4089 random_seed = running_in_test_harness? 42 + 2*delivery_count : 0;
4090
4091 /* Set close-on-exec on the pipe so that it doesn't get passed on to
4092 a new process that may be forked to do another delivery down the same
4093 SMTP connection. */
4094
ff790e47 4095 (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
059ec3d9
PH
4096
4097 /* Close open file descriptors for the pipes of other processes
4098 that are running in parallel. */
4099
4100 for (poffset = 0; poffset < remote_max_parallel; poffset++)
f1e894f3 4101 if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd);
059ec3d9
PH
4102
4103 /* This process has inherited a copy of the file descriptor
4104 for the data file, but its file pointer is shared with all the
4105 other processes running in parallel. Therefore, we have to re-open
4106 the file in order to get a new file descriptor with its own
4107 file pointer. We don't need to lock it, as the lock is held by
4108 the parent process. There doesn't seem to be any way of doing
4109 a dup-with-new-file-pointer. */
4110
f1e894f3 4111 (void)close(deliver_datafile);
059ec3d9
PH
4112 sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir,
4113 message_id);
4114 deliver_datafile = Uopen(spoolname, O_RDWR | O_APPEND, 0);
4115
4116 if (deliver_datafile < 0)
4117 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote "
4118 "parallel delivery: %s", spoolname, strerror(errno));
4119
4120 /* Set the close-on-exec flag */
4121
ff790e47 4122 (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) |
059ec3d9
PH
4123 FD_CLOEXEC);
4124
4125 /* Set the uid/gid of this process; bombs out on failure. */
4126
4127 exim_setugid(uid, gid, use_initgroups,
4128 string_sprintf("remote delivery to %s with transport=%s",
4129 addr->address, tp->name));
4130
4131 /* Close the unwanted half of this process' pipe, set the process state,
4132 and run the transport. Afterwards, transport_count will contain the number
4133 of bytes written. */
4134
f1e894f3 4135 (void)close(pfd[pipe_read]);
059ec3d9
PH
4136 set_process_info("delivering %s using %s", message_id, tp->name);
4137 debug_print_string(tp->debug_string);
4138 if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr);
4139
4140 set_process_info("delivering %s (just run %s for %s%s in subprocess)",
4141 message_id, tp->name, addr->address, (addr->next == NULL)? "" : ", ...");
4142
4143 /* Ensure any cached resources that we used are now released */
4144
4145 search_tidyup();
4146
4147 /* Pass the result back down the pipe. This is a lot more information
4148 than is needed for a local delivery. We have to send back the error
4149 status for each address, the usability status for each host that is
4150 flagged as unusable, and all the retry items. When TLS is in use, we
4151 send also the cipher and peerdn information. Each type of information
4152 is flagged by an identifying byte, and is then in a fixed format (with
4153 strings terminated by zeros), and there is a final terminator at the
4154 end. The host information and retry information is all attached to
4155 the first address, so that gets sent at the start. */
4156
4157 /* Host unusability information: for most success cases this will
4158 be null. */
4159
4160 for (h = addr->host_list; h != NULL; h = h->next)
4161 {
4162 if (h->address == NULL || h->status < hstatus_unusable) continue;
4163 sprintf(CS big_buffer, "H%c%c%s", h->status, h->why, h->address);
1ac6b2e7 4164 rmt_dlv_checked_write(fd, big_buffer, Ustrlen(big_buffer+3) + 4);
059ec3d9
PH
4165 }
4166
4167 /* The number of bytes written. This is the same for each address. Even
4168 if we sent several copies of the message down the same connection, the
4169 size of each one is the same, and it's that value we have got because
4170 transport_count gets reset before calling transport_write_message(). */
4171
4172 big_buffer[0] = 'S';
4173 memcpy(big_buffer+1, &transport_count, sizeof(transport_count));
1ac6b2e7 4174 rmt_dlv_checked_write(fd, big_buffer, sizeof(transport_count) + 1);
059ec3d9 4175
6f123593
JH
4176 /* Information about what happened to each address. Four item types are
4177 used: an optional 'X' item first, for TLS information, then an optional "C"
4178 item for any client-auth info followed by 'R' items for any retry settings,
4179 and finally an 'A' item for the remaining data. */
059ec3d9
PH
4180
4181 for(; addr != NULL; addr = addr->next)
4182 {
4183 uschar *ptr;
4184 retry_item *r;
4185
4186 /* The certificate verification status goes into the flags */
817d9f57 4187 if (tls_out.certificate_verified) setflag(addr, af_cert_verified);
a0a2d1ee 4188#ifdef EXPERIMENTAL_DANE
53a7196b 4189 if (tls_out.dane_verified) setflag(addr, af_dane_verified);
a0a2d1ee 4190#endif
059ec3d9
PH
4191
4192 /* Use an X item only if there's something to send */
a7538db1 4193#ifdef SUPPORT_TLS
9d1c15ef 4194 if (addr->cipher)
059ec3d9
PH
4195 {
4196 ptr = big_buffer;
9d1c15ef 4197 sprintf(CS ptr, "X1%.128s", addr->cipher);
059ec3d9 4198 while(*ptr++);
9d1c15ef
JH
4199 if (!addr->peerdn)
4200 *ptr++ = 0;
4201 else
059ec3d9
PH
4202 {
4203 sprintf(CS ptr, "%.512s", addr->peerdn);
4204 while(*ptr++);
4205 }
9d1c15ef 4206
1ac6b2e7 4207 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
059ec3d9 4208 }
9d1c15ef
JH
4209 if (addr->peercert)
4210 {
4211 ptr = big_buffer;
4212 *ptr++ = 'X'; *ptr++ = '2';
4213 if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert))
4214 while(*ptr++);
4215 else
4216 *ptr++ = 0;
4217 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
4218 }
4219 if (addr->ourcert)
4220 {
4221 ptr = big_buffer;
4222 *ptr++ = 'X'; *ptr++ = '3';
4223 if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert))
4224 while(*ptr++);
4225 else
4226 *ptr++ = 0;
4227 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
4228 }
a7538db1 4229# ifndef DISABLE_OCSP
018058b2
JH
4230 if (addr->ocsp > OCSP_NOT_REQ)
4231 {
4232 ptr = big_buffer;
4233 sprintf(CS ptr, "X4%c", addr->ocsp + '0');
4234 while(*ptr++);
4235 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
4236 }
a7538db1
JH
4237# endif
4238#endif /*SUPPORT_TLS*/
059ec3d9 4239
6f123593
JH
4240 if (client_authenticator)
4241 {
4242 ptr = big_buffer;
4243 sprintf(CS big_buffer, "C1%.64s", client_authenticator);
4244 while(*ptr++);
1ac6b2e7 4245 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
6f123593
JH
4246 }
4247 if (client_authenticated_id)
4248 {
4249 ptr = big_buffer;
4250 sprintf(CS big_buffer, "C2%.64s", client_authenticated_id);
4251 while(*ptr++);
1ac6b2e7 4252 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
6f123593 4253 }
c8e2fc1e
JH
4254 if (client_authenticated_sender)
4255 {
4256 ptr = big_buffer;
4257 sprintf(CS big_buffer, "C3%.64s", client_authenticated_sender);
4258 while(*ptr++);
1ac6b2e7 4259 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
c8e2fc1e 4260 }
6f123593 4261
a7538db1 4262#ifndef DISABLE_PRDR
783b385f
JH
4263 if (addr->flags & af_prdr_used)
4264 rmt_dlv_checked_write(fd, "P", 1);
a7538db1 4265#endif
fd98a5c6 4266
a7538db1 4267#ifdef EXPERIMENTAL_DSN
6c1c3d1d
WB
4268 big_buffer[0] = 'D';
4269 memcpy(big_buffer+1, &addr->dsn_aware, sizeof(addr->dsn_aware));
4270 rmt_dlv_checked_write(fd, big_buffer, sizeof(addr->dsn_aware) + 1);
4271 DEBUG(D_deliver) debug_printf("DSN write: addr->dsn_aware = %d\n", addr->dsn_aware);
a7538db1 4272#endif
6c1c3d1d 4273
059ec3d9
PH
4274 /* Retry information: for most success cases this will be null. */
4275
4276 for (r = addr->retries; r != NULL; r = r->next)
4277 {
4278 uschar *ptr;
4279 sprintf(CS big_buffer, "R%c%.500s", r->flags, r->key);
4280 ptr = big_buffer + Ustrlen(big_buffer+2) + 3;
4281 memcpy(ptr, &(r->basic_errno), sizeof(r->basic_errno));
4282 ptr += sizeof(r->basic_errno);
4283 memcpy(ptr, &(r->more_errno), sizeof(r->more_errno));
4284 ptr += sizeof(r->more_errno);
4285 if (r->message == NULL) *ptr++ = 0; else
4286 {
4287 sprintf(CS ptr, "%.512s", r->message);
4288 while(*ptr++);
4289 }
1ac6b2e7 4290 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
059ec3d9
PH
4291 }
4292
4293 /* The rest of the information goes in an 'A' item. */
4294
4295 ptr = big_buffer + 3;
4296 sprintf(CS big_buffer, "A%c%c", addr->transport_return,
4297 addr->special_action);
4298 memcpy(ptr, &(addr->basic_errno), sizeof(addr->basic_errno));
4299 ptr += sizeof(addr->basic_errno);
4300 memcpy(ptr, &(addr->more_errno), sizeof(addr->more_errno));
4301 ptr += sizeof(addr->more_errno);
4302 memcpy(ptr, &(addr->flags), sizeof(addr->flags));
4303 ptr += sizeof(addr->flags);
4304
4305 if (addr->message == NULL) *ptr++ = 0; else
4306 {
4307 sprintf(CS ptr, "%.1024s", addr->message);
4308 while(*ptr++);
4309 }
4310
4311 if (addr->user_message == NULL) *ptr++ = 0; else
4312 {
4313 sprintf(CS ptr, "%.1024s", addr->user_message);
4314 while(*ptr++);
4315 }
4316
4317 if (addr->host_used == NULL) *ptr++ = 0; else
4318 {
4319 sprintf(CS ptr, "%.256s", addr->host_used->name);
4320 while(*ptr++);
4321 sprintf(CS ptr, "%.64s", addr->host_used->address);
4322 while(*ptr++);
4323 memcpy(ptr, &(addr->host_used->port), sizeof(addr->host_used->port));
4324 ptr += sizeof(addr->host_used->port);
783b385f
JH
4325
4326 /* DNS lookup status */
4327 *ptr++ = addr->host_used->dnssec==DS_YES ? '2'
4328 : addr->host_used->dnssec==DS_NO ? '1' : '0';
4329
059ec3d9 4330 }
1ac6b2e7 4331 rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
059ec3d9
PH
4332 }
4333
4334 /* Add termination flag, close the pipe, and that's it. The character
4335 after 'Z' indicates whether continue_transport is now NULL or not.
4336 A change from non-NULL to NULL indicates a problem with a continuing
4337 connection. */
4338
4339 big_buffer[0] = 'Z';
4340 big_buffer[1] = (continue_transport == NULL)? '0' : '1';
1ac6b2e7 4341 rmt_dlv_checked_write(fd, big_buffer, 2);
f1e894f3 4342 (void)close(fd);
059ec3d9
PH
4343 exit(EXIT_SUCCESS);
4344 }
4345
4346 /* Back in the mainline: close the unwanted half of the pipe. */
4347
f1e894f3 4348 (void)close(pfd[pipe_write]);
059ec3d9
PH
4349
4350 /* Fork failed; defer with error message */
4351
4352 if (pid < 0)
4353 {
f1e894f3 4354 (void)close(pfd[pipe_read]);
059ec3d9
PH
4355 remote_post_process(addr, LOG_MAIN|LOG_PANIC,
4356 string_sprintf("fork failed for remote delivery to %s: %s",
4357 addr->domain, strerror(errno)), fallback);
4358 continue;
4359 }
4360
4361 /* Fork succeeded; increment the count, and remember relevant data for
4362 when the process finishes. */
4363
4364 parcount++;
4365 parlist[poffset].addrlist = parlist[poffset].addr = addr;
4366 parlist[poffset].pid = pid;
4367 parlist[poffset].fd = pfd[pipe_read];
4368 parlist[poffset].done = FALSE;
4369 parlist[poffset].msg = NULL;
4370 parlist[poffset].return_path = return_path;
4371
4372 /* If the process we've just started is sending a message down an existing
4373 channel, wait for it now. This ensures that only one such process runs at
4374 once, whatever the value of remote_max parallel. Otherwise, we might try to
4375 send two or more messages simultaneously down the same channel. This could
4376 happen if there are different domains that include the same host in otherwise
4377 different host lists.
4378
4379 Also, if the transport closes down the channel, this information gets back
4380 (continue_transport gets set to NULL) before we consider any other addresses
4381 in this message. */
4382
4383 if (continue_transport != NULL) par_reduce(0, fallback);
4384
4385 /* Otherwise, if we are running in the test harness, wait a bit, to let the
4386 newly created process get going before we create another process. This should
4387 ensure repeatability in the tests. We only need to wait a tad. */
4388
4389 else if (running_in_test_harness) millisleep(500);
4390 }
4391
4392/* Reached the end of the list of addresses. Wait for all the subprocesses that
4393are still running and post-process their addresses. */
4394
4395par_reduce(0, fallback);
4396return TRUE;
4397}
4398
4399
4400
4401
4402/*************************************************
4403* Split an address into local part and domain *
4404*************************************************/
4405
4406/* This function initializes an address for routing by splitting it up into a
4407local part and a domain. The local part is set up twice - once in its original
4408casing, and once in lower case, and it is dequoted. We also do the "percent
4409hack" for configured domains. This may lead to a DEFER result if a lookup
4410defers. When a percent-hacking takes place, we insert a copy of the original
4411address as a new parent of this address, as if we have had a redirection.
4412
4413Argument:
4414 addr points to an addr_item block containing the address
4415
4416Returns: OK
4417 DEFER - could not determine if domain is %-hackable
4418*/
4419
4420int
4421deliver_split_address(address_item *addr)
4422{
4423uschar *address = addr->address;
4424uschar *domain = Ustrrchr(address, '@');
4425uschar *t;
4426int len = domain - address;
4427
4428addr->domain = string_copylc(domain+1); /* Domains are always caseless */
4429
4430/* The implication in the RFCs (though I can't say I've seen it spelled out
4431explicitly) is that quoting should be removed from local parts at the point
4432where they are locally interpreted. [The new draft "821" is more explicit on
4433this, Jan 1999.] We know the syntax is valid, so this can be done by simply
4434removing quoting backslashes and any unquoted doublequotes. */
4435
4436t = addr->cc_local_part = store_get(len+1);
4437while(len-- > 0)
4438 {
4439 register int c = *address++;
4440 if (c == '\"') continue;
4441 if (c == '\\')
4442 {
4443 *t++ = *address++;
4444 len--;
4445 }
4446 else *t++ = c;
4447 }
4448*t = 0;
4449
4450/* We do the percent hack only for those domains that are listed in
4451percent_hack_domains. A loop is required, to copy with multiple %-hacks. */
4452
4453if (percent_hack_domains != NULL)
4454 {
4455 int rc;
4456 uschar *new_address = NULL;
4457 uschar *local_part = addr->cc_local_part;
4458
4459 deliver_domain = addr->domain; /* set $domain */
4460
4461 while ((rc = match_isinlist(deliver_domain, &percent_hack_domains, 0,
4462 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
4463 == OK &&
4464 (t = Ustrrchr(local_part, '%')) != NULL)
4465 {
4466 new_address = string_copy(local_part);
4467 new_address[t - local_part] = '@';
4468 deliver_domain = string_copylc(t+1);
4469 local_part = string_copyn(local_part, t - local_part);
4470 }
4471
4472 if (rc == DEFER) return DEFER; /* lookup deferred */
4473
4474 /* If hackery happened, set up new parent and alter the current address. */
4475
4476 if (new_address != NULL)
4477 {
4478 address_item *new_parent = store_get(sizeof(address_item));
4479 *new_parent = *addr;
4480 addr->parent = new_parent;
4481 addr->address = new_address;
4482 addr->unique = string_copy(new_address);
4483 addr->domain = deliver_domain;
4484 addr->cc_local_part = local_part;
4485 DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n",
4486 addr->address);
4487 }
4488 }
4489
4490/* Create the lowercased version of the final local part, and make that the
4491default one to be used. */
4492
4493addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part);
4494return OK;
4495}
4496
4497
4498
4499
4500/*************************************************
4501* Get next error message text *
4502*************************************************/
4503
4504/* If f is not NULL, read the next "paragraph", from a customized error message
4505text file, terminated by a line containing ****, and expand it.
4506
4507Arguments:
4508 f NULL or a file to read from
4509 which string indicating which string (for errors)
4510
4511Returns: NULL or an expanded string
4512*/
4513
4514static uschar *
4515next_emf(FILE *f, uschar *which)
4516{
4517int size = 256;
4518int ptr = 0;
4519uschar *para, *yield;
4520uschar buffer[256];
4521
4522if (f == NULL) return NULL;
4523
4524if (Ufgets(buffer, sizeof(buffer), f) == NULL ||
4525 Ustrcmp(buffer, "****\n") == 0) return NULL;
4526
4527para = store_get(size);
4528for (;;)
4529 {
4530 para = string_cat(para, &size, &ptr, buffer, Ustrlen(buffer));
4531 if (Ufgets(buffer, sizeof(buffer), f) == NULL ||
4532 Ustrcmp(buffer, "****\n") == 0) break;
4533 }
4534para[ptr] = 0;
4535
4536yield = expand_string(para);
4537if (yield != NULL) return yield;
4538
4539log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from "
4540 "bounce_message_file or warn_message_file (%s): %s", which,
4541 expand_string_message);
4542return NULL;
4543}
4544
4545
4546
4547
4548/*************************************************
4549* Close down a passed transport channel *
4550*************************************************/
4551
4552/* This function is called when a passed transport channel cannot be used.
4553It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED
4554so that the function call can be the argument of a "return" statement.
4555
4556Arguments: None
4557Returns: DELIVER_NOT_ATTEMPTED
4558*/
4559
4560static int
4561continue_closedown(void)
4562{
4563if (continue_transport != NULL)
4564 {
4565 transport_instance *t;
4566 for (t = transports; t != NULL; t = t->next)
4567 {
4568 if (Ustrcmp(t->name, continue_transport) == 0)
4569 {
4570 if (t->info->closedown != NULL) (t->info->closedown)(t);
4571 break;
4572 }
4573 }
4574 }
4575return DELIVER_NOT_ATTEMPTED;
4576}
4577
4578
4579
4580
4581/*************************************************
4582* Print address information *
4583*************************************************/
4584
4585/* This function is called to output an address, or information about an
4586address, for bounce or defer messages. If the hide_child flag is set, all we
4587output is the original ancestor address.
4588
4589Arguments:
4590 addr points to the address
4591 f the FILE to print to
4592 si an initial string
4593 sc a continuation string for before "generated"
4594 se an end string
4595
4596Returns: TRUE if the address is not hidden
4597*/
4598
4599static BOOL
4600print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc,
4601 uschar *se)
4602{
4603BOOL yield = TRUE;
4604uschar *printed = US"";
4605address_item *ancestor = addr;
4606while (ancestor->parent != NULL) ancestor = ancestor->parent;
4607
4608fprintf(f, "%s", CS si);
4609
4610if (addr->parent != NULL && testflag(addr, af_hide_child))
4611 {
4612 printed = US"an undisclosed address";
4613 yield = FALSE;
4614 }
059ec3d9
PH
4615else if (!testflag(addr, af_pfr) || addr->parent == NULL)
4616 printed = addr->address;
4617
4618else
4619 {
4620 uschar *s = addr->address;
4621 uschar *ss;
4622
4623 if (addr->address[0] == '>') { ss = US"mail"; s++; }
4624 else if (addr->address[0] == '|') ss = US"pipe";
4625 else ss = US"save";
4626
4627 fprintf(f, "%s to %s%sgenerated by ", ss, s, sc);
4628 printed = addr->parent->address;
4629 }
4630
4631fprintf(f, "%s", CS string_printing(printed));
4632
4633if (ancestor != addr)
4634 {
4635 uschar *original = (ancestor->onetime_parent == NULL)?
4636 ancestor->address : ancestor->onetime_parent;
4637 if (strcmpic(original, printed) != 0)
4638 fprintf(f, "%s(%sgenerated from %s)", sc,
4639 (ancestor != addr->parent)? "ultimately " : "",
4640 string_printing(original));
4641 }
4642
4643fprintf(f, "%s", CS se);
4644return yield;
4645}
4646
4647
4648
4649
4650
059ec3d9
PH
4651/*************************************************
4652* Print error for an address *
4653*************************************************/
4654
4655/* This function is called to print the error information out of an address for
4656a bounce or a warning message. It tries to format the message reasonably by
4657introducing newlines. All lines are indented by 4; the initial printing
4658position must be set before calling.
4659
447d236c 4660This function used always to print the error. Nowadays we want to restrict it
75def545
PH
4661to cases such as LMTP/SMTP errors from a remote host, and errors from :fail:
4662and filter "fail". We no longer pass other information willy-nilly in bounce
4663and warning messages. Text in user_message is always output; text in message
4664only if the af_pass_message flag is set.
447d236c 4665
059ec3d9 4666Arguments:
447d236c 4667 addr the address
059ec3d9 4668 f the FILE to print on
75def545 4669 t some leading text
059ec3d9
PH
4670
4671Returns: nothing
4672*/
4673
4674static void
447d236c 4675print_address_error(address_item *addr, FILE *f, uschar *t)
059ec3d9 4676{
447d236c 4677int count = Ustrlen(t);
75def545 4678uschar *s = testflag(addr, af_pass_message)? addr->message : NULL;
447d236c 4679
75def545 4680if (s == NULL)
059ec3d9 4681 {
75def545 4682 if (addr->user_message != NULL) s = addr->user_message; else return;
059ec3d9 4683 }
447d236c
PH
4684
4685fprintf(f, "\n %s", t);
4686
4687while (*s != 0)
059ec3d9 4688 {
447d236c
PH
4689 if (*s == '\\' && s[1] == 'n')
4690 {
4691 fprintf(f, "\n ");
4692 s += 2;
4693 count = 0;
4694 }
4695 else
059ec3d9 4696 {
447d236c
PH
4697 fputc(*s, f);
4698 count++;
4699 if (*s++ == ':' && isspace(*s) && count > 45)
059ec3d9 4700 {
447d236c 4701 fprintf(f, "\n "); /* sic (because space follows) */
059ec3d9
PH
4702 count = 0;
4703 }
059ec3d9
PH
4704 }
4705 }
4706}
4707
4708
4709
447d236c
PH
4710
4711
4712
d7174846
PH
4713/*************************************************
4714* Check list of addresses for duplication *
4715*************************************************/
4716
4717/* This function was introduced when the test for duplicate addresses that are
4718not pipes, files, or autoreplies was moved from the middle of routing to when
4719routing was complete. That was to fix obscure cases when the routing history
dbcef0ea
PH
4720affects the subsequent routing of identical addresses. This function is called
4721after routing, to check that the final routed addresses are not duplicates.
d7174846 4722
dbcef0ea
PH
4723If we detect a duplicate, we remember what it is a duplicate of. Note that
4724pipe, file, and autoreply de-duplication is handled during routing, so we must
4725leave such "addresses" alone here, as otherwise they will incorrectly be
4726discarded.
d7174846
PH
4727
4728Argument: address of list anchor
4729Returns: nothing
4730*/
4731
4732static void
4733do_duplicate_check(address_item **anchor)
4734{
4735address_item *addr;
4736while ((addr = *anchor) != NULL)
4737 {
4738 tree_node *tnode;
4739 if (testflag(addr, af_pfr))
4740 {
4741 anchor = &(addr->next);
4742 }
4743 else if ((tnode = tree_search(tree_duplicates, addr->unique)) != NULL)
4744 {
4745 DEBUG(D_deliver|D_route)
4746 debug_printf("%s is a duplicate address: discarded\n", addr->unique);
4747 *anchor = addr->next;
4748 addr->dupof = tnode->data.ptr;
4749 addr->next = addr_duplicate;
4750 addr_duplicate = addr;
4751 }
4752 else
4753 {
4754 tree_add_duplicate(addr->unique, addr);
4755 anchor = &(addr->next);
4756 }
4757 }
4758}
4759
4760
4761
059ec3d9
PH
4762
4763/*************************************************
4764* Deliver one message *
4765*************************************************/
4766
4767/* This is the function which is called when a message is to be delivered. It
4768is passed the id of the message. It is possible that the message no longer
4769exists, if some other process has delivered it, and it is also possible that
4770the message is being worked on by another process, in which case the data file
4771will be locked.
4772
4773If no delivery is attempted for any of the above reasons, the function returns
4774DELIVER_NOT_ATTEMPTED.
4775
4776If the give_up flag is set true, do not attempt any deliveries, but instead
4777fail all outstanding addresses and return the message to the sender (or
4778whoever).
4779
4780A delivery operation has a process all to itself; we never deliver more than
4781one message in the same process. Therefore we needn't worry too much about
4782store leakage.
4783
4784Arguments:
4785 id the id of the message to be delivered
4786 forced TRUE if delivery was forced by an administrator; this overrides
4787 retry delays and causes a delivery to be tried regardless
4788 give_up TRUE if an administrator has requested that delivery attempts
4789 be abandoned
4790
4791Returns: When the global variable mua_wrapper is FALSE:
4792 DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made
4793 DELIVER_NOT_ATTEMPTED otherwise (see comment above)
4794 When the global variable mua_wrapper is TRUE:
4795 DELIVER_MUA_SUCCEEDED if delivery succeeded
4796 DELIVER_MUA_FAILED if delivery failed
4797 DELIVER_NOT_ATTEMPTED if not attempted (should not occur)
4798*/
4799
4800int
4801deliver_message(uschar *id, BOOL forced, BOOL give_up)
4802{
4803int i, rc;
4804int final_yield = DELIVER_ATTEMPTED_NORMAL;
4805time_t now = time(NULL);
4806address_item *addr_last = NULL;
4807uschar *filter_message = NULL;
4808FILE *jread;
4809int process_recipients = RECIP_ACCEPT;
4810open_db dbblock;
4811open_db *dbm_file;
faa05a93 4812extern int acl_where;
059ec3d9
PH
4813
4814uschar *info = (queue_run_pid == (pid_t)0)?
4815 string_sprintf("delivering %s", id) :
4816 string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid);
4817
4818/* If the D_process_info bit is on, set_process_info() will output debugging
4819information. If not, we want to show this initial information if D_deliver or
4820D_queue_run is set or in verbose mode. */
4821
4822set_process_info("%s", info);
4823
4824if ((debug_selector & D_process_info) == 0 &&
4825 (debug_selector & (D_deliver|D_queue_run|D_v)) != 0)
4826 debug_printf("%s\n", info);
4827
4828/* Ensure that we catch any subprocesses that are created. Although Exim
4829sets SIG_DFL as its initial default, some routes through the code end up
4830here with it set to SIG_IGN - cases where a non-synchronous delivery process
4831has been forked, but no re-exec has been done. We use sigaction rather than
4832plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be
4833sure it is turned off. (There was a problem on AIX with this.) */
4834
4835#ifdef SA_NOCLDWAIT
4836 {
4837 struct sigaction act;
4838 act.sa_handler = SIG_DFL;
4839 sigemptyset(&(act.sa_mask));
4840 act.sa_flags = 0;
4841 sigaction(SIGCHLD, &act, NULL);
4842 }
4843#else
4844signal(SIGCHLD, SIG_DFL);
4845#endif
4846
4847/* Make the forcing flag available for routers and transports, set up the
4848global message id field, and initialize the count for returned files and the
4849message size. This use of strcpy() is OK because the length id is checked when
4850it is obtained from a command line (the -M or -q options), and otherwise it is
4851known to be a valid message id. */
4852
4853Ustrcpy(message_id, id);
4854deliver_force = forced;
4855return_count = 0;
4856message_size = 0;
4857
4858/* Initialize some flags */
4859
4860update_spool = FALSE;
4861remove_journal = TRUE;
4862
faa05a93
JH
4863/* Set a known context for any ACLs we call via expansions */
4864acl_where = ACL_WHERE_DELIVERY;
4865
059ec3d9
PH
4866/* Reset the random number generator, so that if several delivery processes are
4867started from a queue runner that has already used random numbers (for sorting),
4868they don't all get the same sequence. */
4869
4870random_seed = 0;
4871
4872/* Open and lock the message's data file. Exim locks on this one because the
4873header file may get replaced as it is re-written during the delivery process.
4874Any failures cause messages to be written to the log, except for missing files
4875while queue running - another process probably completed delivery. As part of
4876opening the data file, message_subdir gets set. */
4877
4878if (!spool_open_datafile(id))
4879 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4880
4881/* The value of message_size at this point has been set to the data length,
4882plus one for the blank line that notionally precedes the data. */
4883
4884/* Now read the contents of the header file, which will set up the headers in
4885store, and also the list of recipients and the tree of non-recipients and
4886assorted flags. It updates message_size. If there is a reading or format error,
4887give up; if the message has been around for sufficiently long, remove it. */
4888
4889sprintf(CS spoolname, "%s-H", id);
4890if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK)
4891 {
4892 if (errno == ERRNO_SPOOLFORMAT)
4893 {
4894 struct stat statbuf;
4895 sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir,
4896 spoolname);
4897 if (Ustat(big_buffer, &statbuf) == 0)
b1c749bb
PH
4898 log_write(0, LOG_MAIN, "Format error in spool file %s: "
4899 "size=" OFF_T_FMT, spoolname, statbuf.st_size);
059ec3d9
PH
4900 else log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname);
4901 }
4902 else
4903 log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname,
4904 strerror(errno));
4905
4906 /* If we managed to read the envelope data, received_time contains the
4907 time the message was received. Otherwise, we can calculate it from the
4908 message id. */
4909
4910 if (rc != spool_read_hdrerror)
4911 {
4912 received_time = 0;
4913 for (i = 0; i < 6; i++)
4914 received_time = received_time * BASE_62 + tab62[id[i] - '0'];
4915 }
4916
4917 /* If we've had this malformed message too long, sling it. */
4918
4919 if (now - received_time > keep_malformed)
4920 {
4921 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir, id);
4922 Uunlink(spoolname);
4923 sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id);
4924 Uunlink(spoolname);
4925 sprintf(CS spoolname, "%s/input/%s/%s-H", spool_directory, message_subdir, id);
4926 Uunlink(spoolname);
4927 sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
4928 Uunlink(spoolname);
4929 log_write(0, LOG_MAIN, "Message removed because older than %s",
4930 readconf_printtime(keep_malformed));
4931 }
4932
f1e894f3 4933 (void)close(deliver_datafile);
059ec3d9
PH
4934 deliver_datafile = -1;
4935 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4936 }
4937
4938/* The spool header file has been read. Look to see if there is an existing
4939journal file for this message. If there is, it means that a previous delivery
4940attempt crashed (program or host) before it could update the spool header file.
4941Read the list of delivered addresses from the journal and add them to the
4942nonrecipients tree. Then update the spool file. We can leave the journal in
4943existence, as it will get further successful deliveries added to it in this
4944run, and it will be deleted if this function gets to its end successfully.
4945Otherwise it might be needed again. */
4946
4947sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
4948jread = Ufopen(spoolname, "rb");
4949if (jread != NULL)
4950 {
4951 while (Ufgets(big_buffer, big_buffer_size, jread) != NULL)
4952 {
4953 int n = Ustrlen(big_buffer);
4954 big_buffer[n-1] = 0;
4955 tree_add_nonrecipient(big_buffer);
4956 DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from "
4957 "journal file\n", big_buffer);
4958 }
f1e894f3 4959 (void)fclose(jread);
059ec3d9
PH
4960 /* Panic-dies on error */
4961 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
4962 }
4963else if (errno != ENOENT)
4964 {
4965 log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: "
4966 "%s", strerror(errno));
4967 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4968 }
4969
4970/* A null recipients list indicates some kind of disaster. */
4971
4972if (recipients_list == NULL)
4973 {
f1e894f3 4974 (void)close(deliver_datafile);
059ec3d9
PH
4975 deliver_datafile = -1;
4976 log_write(0, LOG_MAIN, "Spool error: no recipients for %s", spoolname);
4977 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4978 }
4979
4980
4981/* Handle a message that is frozen. There are a number of different things that
4982can happen, but in the default situation, unless forced, no delivery is
4983attempted. */
4984
4985if (deliver_freeze)
4986 {
a7538db1 4987#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
059ec3d9
PH
4988 /* Moving to another directory removes the message from Exim's view. Other
4989 tools must be used to deal with it. Logging of this action happens in
4990 spool_move_message() and its subfunctions. */
4991
4992 if (move_frozen_messages &&
4993 spool_move_message(id, message_subdir, US"", US"F"))
4994 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
a7538db1 4995#endif
059ec3d9
PH
4996
4997 /* For all frozen messages (bounces or not), timeout_frozen_after sets the
4998 maximum time to keep messages that are frozen. Thaw if we reach it, with a
4999 flag causing all recipients to be failed. The time is the age of the
5000 message, not the time since freezing. */
5001
5002 if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after)
5003 {
5004 log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after");
5005 process_recipients = RECIP_FAIL_TIMEOUT;
5006 }
5007
5008 /* For bounce messages (and others with no sender), thaw if the error message
5009 ignore timer is exceeded. The message will be discarded if this delivery
5010 fails. */
5011
5012 else if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after)
5013 {
5014 log_write(0, LOG_MAIN, "Unfrozen by errmsg timer");
5015 }
5016
ef213c3b
PH
5017 /* If this is a bounce message, or there's no auto thaw, or we haven't
5018 reached the auto thaw time yet, and this delivery is not forced by an admin
5019 user, do not attempt delivery of this message. Note that forced is set for
5020 continuing messages down the same channel, in order to skip load checking and
5021 ignore hold domains, but we don't want unfreezing in that case. */
059ec3d9
PH
5022
5023 else
5024 {
ef213c3b
PH
5025 if ((sender_address[0] == 0 ||
5026 auto_thaw <= 0 ||
5027 now <= deliver_frozen_at + auto_thaw
5028 )
5029 &&
5030 (!forced || !deliver_force_thaw || !admin_user ||
5031 continue_hostname != NULL
5032 ))
059ec3d9 5033 {
f1e894f3 5034 (void)close(deliver_datafile);
059ec3d9
PH
5035 deliver_datafile = -1;
5036 log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
5037 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5038 }
5039
5040 /* If delivery was forced (by an admin user), assume a manual thaw.
5041 Otherwise it's an auto thaw. */
5042
5043 if (forced)
5044 {
5045 deliver_manual_thaw = TRUE;
5046 log_write(0, LOG_MAIN, "Unfrozen by forced delivery");
5047 }
5048 else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw");
5049 }
5050
5051 /* We get here if any of the rules for unfreezing have triggered. */
5052
5053 deliver_freeze = FALSE;
5054 update_spool = TRUE;
5055 }
5056
5057
5058/* Open the message log file if we are using them. This records details of
5059deliveries, deferments, and failures for the benefit of the mail administrator.
5060The log is not used by exim itself to track the progress of a message; that is
5061done by rewriting the header spool file. */
5062
5063if (message_logs)
5064 {
5065 uschar *error;
5066 int fd;
5067
5068 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir, id);
5069 fd = open_msglog_file(spoolname, SPOOL_MODE, &error);
5070
5071 if (fd < 0)
5072 {
5073 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error,
5074 spoolname, strerror(errno));
5075 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5076 }
5077
5078 /* Make a C stream out of it. */
5079
5080 message_log = fdopen(fd, "a");
5081 if (message_log == NULL)
5082 {
5083 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s",
5084 spoolname, strerror(errno));
5085 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5086 }
5087 }
5088
5089
5090/* If asked to give up on a message, log who did it, and set the action for all
5091the addresses. */
5092
5093if (give_up)
5094 {
5095 struct passwd *pw = getpwuid(real_uid);
5096 log_write(0, LOG_MAIN, "cancelled by %s", (pw != NULL)?
5097 US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid));
5098 process_recipients = RECIP_FAIL;
5099 }
5100
5101/* Otherwise, if there are too many Received: headers, fail all recipients. */
5102
5103else if (received_count > received_headers_max)
5104 process_recipients = RECIP_FAIL_LOOP;
5105
5106/* Otherwise, if a system-wide, address-independent message filter is
5107specified, run it now, except in the case when we are failing all recipients as
5108a result of timeout_frozen_after. If the system filter yields "delivered", then
5109ignore the true recipients of the message. Failure of the filter file is
5110logged, and the delivery attempt fails. */
5111
5112else if (system_filter != NULL && process_recipients != RECIP_FAIL_TIMEOUT)
5113 {
5114 int rc;
5115 int filtertype;
5116 ugid_block ugid;
5117 redirect_block redirect;
5118
5119 if (system_filter_uid_set)
5120 {
5121 ugid.uid = system_filter_uid;
5122 ugid.gid = system_filter_gid;
5123 ugid.uid_set = ugid.gid_set = TRUE;
5124 }
5125 else
5126 {
5127 ugid.uid_set = ugid.gid_set = FALSE;
5128 }
5129
5130 return_path = sender_address;
5131 enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */
5132 system_filtering = TRUE;
5133
5134 /* Any error in the filter file causes a delivery to be abandoned. */
5135
5136 redirect.string = system_filter;
5137 redirect.isfile = TRUE;
5138 redirect.check_owner = redirect.check_group = FALSE;
5139 redirect.owners = NULL;
5140 redirect.owngroups = NULL;
5141 redirect.pw = NULL;
5142 redirect.modemask = 0;
5143
5144 DEBUG(D_deliver|D_filter) debug_printf("running system filter\n");
5145
5146 rc = rda_interpret(
5147 &redirect, /* Where the data is */
5148 RDO_DEFER | /* Turn on all the enabling options */
5149 RDO_FAIL | /* Leave off all the disabling options */
5150 RDO_FILTER |
5151 RDO_FREEZE |
5152 RDO_REALLOG |
5153 RDO_REWRITE,
5154 NULL, /* No :include: restriction (not used in filter) */
5155 NULL, /* No sieve vacation directory (not sieve!) */
efd9a422 5156 NULL, /* No sieve enotify mailto owner (not sieve!) */
e4a89c47
PH
5157 NULL, /* No sieve user address (not sieve!) */
5158 NULL, /* No sieve subaddress (not sieve!) */
059ec3d9
PH
5159 &ugid, /* uid/gid data */
5160 &addr_new, /* Where to hang generated addresses */
5161 &filter_message, /* Where to put error message */
5162 NULL, /* Don't skip syntax errors */
5163 &filtertype, /* Will always be set to FILTER_EXIM for this call */
5164 US"system filter"); /* For error messages */
5165
5166 DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc);
5167
5168 if (rc == FF_ERROR || rc == FF_NONEXIST)
5169 {
f1e894f3 5170 (void)close(deliver_datafile);
059ec3d9
PH
5171 deliver_datafile = -1;
5172 log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s",
5173 string_printing(filter_message));
5174 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5175 }
5176
5177 /* Reset things. If the filter message is an empty string, which can happen
5178 for a filter "fail" or "freeze" command with no text, reset it to NULL. */
5179
5180 system_filtering = FALSE;
5181 enable_dollar_recipients = FALSE;
5182 if (filter_message != NULL && filter_message[0] == 0) filter_message = NULL;
5183
5184 /* Save the values of the system filter variables so that user filters
5185 can use them. */
5186
5187 memcpy(filter_sn, filter_n, sizeof(filter_sn));
5188
5189 /* The filter can request that delivery of the original addresses be
5190 deferred. */
5191
5192 if (rc == FF_DEFER)
5193 {
5194 process_recipients = RECIP_DEFER;
5195 deliver_msglog("Delivery deferred by system filter\n");
5196 log_write(0, LOG_MAIN, "Delivery deferred by system filter");
5197 }
5198
5199 /* The filter can request that a message be frozen, but this does not
5200 take place if the message has been manually thawed. In that case, we must
5201 unset "delivered", which is forced by the "freeze" command to make -bF
5202 work properly. */
5203
5204 else if (rc == FF_FREEZE && !deliver_manual_thaw)
5205 {
5206 deliver_freeze = TRUE;
5207 deliver_frozen_at = time(NULL);
5208 process_recipients = RECIP_DEFER;
5209 frozen_info = string_sprintf(" by the system filter%s%s",
5210 (filter_message == NULL)? US"" : US": ",
5211 (filter_message == NULL)? US"" : filter_message);
5212 }
5213
5214 /* The filter can request that a message be failed. The error message may be
5215 quite long - it is sent back to the sender in the bounce - but we don't want
5216 to fill up the log with repetitions of it. If it starts with << then the text
5217 between << and >> is written to the log, with the rest left for the bounce
5218 message. */
5219
5220 else if (rc == FF_FAIL)
5221 {
5222 uschar *colon = US"";
5223 uschar *logmsg = US"";
5224 int loglen = 0;
5225
5226 process_recipients = RECIP_FAIL_FILTER;
5227
5228 if (filter_message != NULL)
5229 {
5230 uschar *logend;
5231 colon = US": ";
5232 if (filter_message[0] == '<' && filter_message[1] == '<' &&
5233 (logend = Ustrstr(filter_message, ">>")) != NULL)
5234 {
5235 logmsg = filter_message + 2;
5236 loglen = logend - logmsg;
5237 filter_message = logend + 2;
5238 if (filter_message[0] == 0) filter_message = NULL;
5239 }
5240 else
5241 {
5242 logmsg = filter_message;
5243 loglen = Ustrlen(filter_message);
5244 }
5245 }
5246
5247 log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen,
5248 logmsg);
5249 }
5250
5251 /* Delivery can be restricted only to those recipients (if any) that the
5252 filter specified. */
5253
5254 else if (rc == FF_DELIVERED)
5255 {
5256 process_recipients = RECIP_IGNORE;
5257 if (addr_new == NULL)
5258 log_write(0, LOG_MAIN, "=> discarded (system filter)");
5259 else
5260 log_write(0, LOG_MAIN, "original recipients ignored (system filter)");
5261 }
5262
5263 /* If any new addresses were created by the filter, fake up a "parent"
5264 for them. This is necessary for pipes, etc., which are expected to have
5265 parents, and it also gives some sensible logging for others. Allow
5266 pipes, files, and autoreplies, and run them as the filter uid if set,
5267 otherwise as the current uid. */
5268
5269 if (addr_new != NULL)
5270 {
5271 int uid = (system_filter_uid_set)? system_filter_uid : geteuid();
5272 int gid = (system_filter_gid_set)? system_filter_gid : getegid();
5273
5274 /* The text "system-filter" is tested in transport_set_up_command() and in
5275 set_up_shell_command() in the pipe transport, to enable them to permit
5276 $recipients, so don't change it here without also changing it there. */
5277
5278 address_item *p = addr_new;
5279 address_item *parent = deliver_make_addr(US"system-filter", FALSE);
5280
5281 parent->domain = string_copylc(qualify_domain_recipient);
5282 parent->local_part = US"system-filter";
5283
5284 /* As part of this loop, we arrange for addr_last to end up pointing
5285 at the final address. This is used if we go on to add addresses for the
5286 original recipients. */
5287
5288 while (p != NULL)
5289 {
4362ff0d
PH
5290 if (parent->child_count == SHRT_MAX)
5291 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more "
5292 "than %d delivery addresses", SHRT_MAX);
059ec3d9
PH
5293 parent->child_count++;
5294 p->parent = parent;
5295
5296 if (testflag(p, af_pfr))
5297 {
5298 uschar *tpname;
5299 uschar *type;
5300 p->uid = uid;
5301 p->gid = gid;
5302 setflag(p, af_uid_set |
5303 af_gid_set |
5304 af_allow_file |
5305 af_allow_pipe |
5306 af_allow_reply);
5307
5308 /* Find the name of the system filter's appropriate pfr transport */
5309
5310 if (p->address[0] == '|')
5311 {
5312 type = US"pipe";
5313 tpname = system_filter_pipe_transport;
5314 address_pipe = p->address;
5315 }
5316 else if (p->address[0] == '>')
5317 {
5318 type = US"reply";
5319 tpname = system_filter_reply_transport;
5320 }
5321 else
5322 {
5323 if (p->address[Ustrlen(p->address)-1] == '/')
5324 {
5325 type = US"directory";
5326 tpname = system_filter_directory_transport;
5327 }
5328 else
5329 {
5330 type = US"file";
5331 tpname = system_filter_file_transport;
5332 }
5333 address_file = p->address;
5334 }
5335
5336 /* Now find the actual transport, first expanding the name. We have
5337 set address_file or address_pipe above. */
5338
5339 if (tpname != NULL)
5340 {
5341 uschar *tmp = expand_string(tpname);
5342 address_file = address_pipe = NULL;
5343 if (tmp == NULL)
5344 p->message = string_sprintf("failed to expand \"%s\" as a "
5345 "system filter transport name", tpname);
5346 tpname = tmp;
5347 }
5348 else
5349 {
5350 p->message = string_sprintf("system_filter_%s_transport is unset",
5351 type);
5352 }
5353
5354 if (tpname != NULL)
5355 {
5356 transport_instance *tp;
5357 for (tp = transports; tp != NULL; tp = tp->next)
5358 {
5359 if (Ustrcmp(tp->name, tpname) == 0)
5360 {
5361 p->transport = tp;
5362 break;
5363 }
5364 }
5365 if (tp == NULL)
5366 p->message = string_sprintf("failed to find \"%s\" transport "
5367 "for system filter delivery", tpname);
5368 }
5369
5370 /* If we couldn't set up a transport, defer the delivery, putting the
5371 error on the panic log as well as the main log. */
5372
5373 if (p->transport == NULL)
5374 {
5375 address_item *badp = p;
5376 p = p->next;
5377 if (addr_last == NULL) addr_new = p; else addr_last->next = p;
5378 badp->local_part = badp->address; /* Needed for log line */
5379 post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, DTYPE_ROUTER, 0);
5380 continue;
5381 }
5382 } /* End of pfr handling */
5383
5384 /* Either a non-pfr delivery, or we found a transport */
5385
5386 DEBUG(D_deliver|D_filter)
5387 debug_printf("system filter added %s\n", p->address);
5388
5389 addr_last = p;
5390 p = p->next;
5391 } /* Loop through all addr_new addresses */
5392 }
5393 }
5394
5395
5396/* Scan the recipients list, and for every one that is not in the non-
5397recipients tree, add an addr item to the chain of new addresses. If the pno
5398value is non-negative, we must set the onetime parent from it. This which
5399points to the relevant entry in the recipients list.
5400
5401This processing can be altered by the setting of the process_recipients
5402variable, which is changed if recipients are to be ignored, failed, or
5403deferred. This can happen as a result of system filter activity, or if the -Mg
5404option is used to fail all of them.
5405
5406Duplicate addresses are handled later by a different tree structure; we can't
5407just extend the non-recipients tree, because that will be re-written to the
5408spool if the message is deferred, and in any case there are casing
5409complications for local addresses. */
5410
5411if (process_recipients != RECIP_IGNORE)
5412 {
5413 for (i = 0; i < recipients_count; i++)
5414 {
5415 if (tree_search(tree_nonrecipients, recipients_list[i].address) == NULL)
5416 {
5417 recipient_item *r = recipients_list + i;
5418 address_item *new = deliver_make_addr(r->address, FALSE);
5419 new->p.errors_address = r->errors_to;
5420
5421 if (r->pno >= 0)
5422 new->onetime_parent = recipients_list[r->pno].address;
5423
a7538db1 5424#ifdef EXPERIMENTAL_DSN
6c1c3d1d
WB
5425 /* If DSN support is enabled, set the dsn flags and the original receipt
5426 to be passed on to other DSN enabled MTAs */
5427 new->dsn_flags = r->dsn_flags & rf_dsnflags;
5428 new->dsn_orcpt = r->orcpt;
5429 DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n", new->dsn_orcpt, new->dsn_flags);
a7538db1 5430#endif
6c1c3d1d 5431
059ec3d9
PH
5432 switch (process_recipients)
5433 {
5434 /* RECIP_DEFER is set when a system filter freezes a message. */
5435
5436 case RECIP_DEFER:
5437 new->next = addr_defer;
5438 addr_defer = new;
5439 break;
5440
5441
5442 /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
5443 command. */
5444
5445 case RECIP_FAIL_FILTER:
5446 new->message =
5447 (filter_message == NULL)? US"delivery cancelled" : filter_message;
447d236c 5448 setflag(new, af_pass_message);
059ec3d9
PH
5449 goto RECIP_QUEUE_FAILED; /* below */
5450
5451
5452 /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older
5453 than the value in timeout_frozen_after. Treat non-bounce messages
5454 similarly to -Mg; for bounce messages we just want to discard, so
5455 don't put the address on the failed list. The timeout has already
5456 been logged. */
5457
5458 case RECIP_FAIL_TIMEOUT:
5459 new->message = US"delivery cancelled; message timed out";
5460 goto RECIP_QUEUE_FAILED; /* below */
5461
5462
5463 /* RECIP_FAIL is set when -Mg has been used. */
5464
5465 case RECIP_FAIL:
5466 new->message = US"delivery cancelled by administrator";
5467 /* Fall through */
5468
5469 /* Common code for the failure cases above. If this is not a bounce
5470 message, put the address on the failed list so that it is used to
5471 create a bounce. Otherwise do nothing - this just discards the address.
5472 The incident has already been logged. */
5473
5474 RECIP_QUEUE_FAILED:
5475 if (sender_address[0] != 0)
5476 {
5477 new->next = addr_failed;
5478 addr_failed = new;
5479 }
5480 break;
5481
5482
5483 /* RECIP_FAIL_LOOP is set when there are too many Received: headers
5484 in the message. Process each address as a routing failure; if this
5485 is a bounce message, it will get frozen. */
5486
5487 case RECIP_FAIL_LOOP:
5488 new->message = US"Too many \"Received\" headers - suspected mail loop";
5489 post_process_one(new, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
5490 break;
5491
5492
5493 /* Value should be RECIP_ACCEPT; take this as the safe default. */
5494
5495 default:
5496 if (addr_new == NULL) addr_new = new; else addr_last->next = new;
5497 addr_last = new;
5498 break;
5499 }
14a465c3
JH
5500
5501#ifdef EXPERIMENTAL_TPDA
5502 if (process_recipients != RECIP_ACCEPT)
5503 {
5504 uschar * save_local = deliver_localpart;
5505 uschar * save_domain = deliver_domain;
5506
5507 deliver_localpart = expand_string(
5508 string_sprintf("${local_part:%s}", new->address));
5509 deliver_domain = expand_string(
5510 string_sprintf("${domain:%s}", new->address));
5511
5512 (void) tpda_raise_event(delivery_event_action,
5513 US"msg:fail:internal", new->message);
5514
5515 deliver_localpart = save_local;
5516 deliver_domain = save_domain;
5517 }
5518#endif
059ec3d9
PH
5519 }
5520 }
5521 }
5522
5523DEBUG(D_deliver)
5524 {
5525 address_item *p = addr_new;
5526 debug_printf("Delivery address list:\n");
5527 while (p != NULL)
5528 {
5529 debug_printf(" %s %s\n", p->address, (p->onetime_parent == NULL)? US"" :
5530 p->onetime_parent);
5531 p = p->next;
5532 }
5533 }
5534
5535/* Set up the buffers used for copying over the file when delivering. */
5536
5537deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
5538deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
5539
5540
5541
5542/* Until there are no more new addresses, handle each one as follows:
5543
5544 . If this is a generated address (indicated by the presence of a parent
5545 pointer) then check to see whether it is a pipe, file, or autoreply, and
5546 if so, handle it directly here. The router that produced the address will
5547 have set the allow flags into the address, and also set the uid/gid required.
5548 Having the routers generate new addresses and then checking them here at
5549 the outer level is tidier than making each router do the checking, and
5550 means that routers don't need access to the failed address queue.
5551
5552 . Break up the address into local part and domain, and make lowercased
5553 versions of these strings. We also make unquoted versions of the local part.
5554
5555 . Handle the percent hack for those domains for which it is valid.
5556
5557 . For child addresses, determine if any of the parents have the same address.
5558 If so, generate a different string for previous delivery checking. Without
5559 this code, if the address spqr generates spqr via a forward or alias file,
5560 delivery of the generated spqr stops further attempts at the top level spqr,
5561 which is not what is wanted - it may have generated other addresses.
5562
5563 . Check on the retry database to see if routing was previously deferred, but
5564 only if in a queue run. Addresses that are to be routed are put on the
5565 addr_route chain. Addresses that are to be deferred are put on the
5566 addr_defer chain. We do all the checking first, so as not to keep the
5567 retry database open any longer than necessary.
5568
5569 . Now we run the addresses through the routers. A router may put the address
5570 on either the addr_local or the addr_remote chain for local or remote
5571 delivery, respectively, or put it on the addr_failed chain if it is
5572 undeliveable, or it may generate child addresses and put them on the
5573 addr_new chain, or it may defer an address. All the chain anchors are
5574 passed as arguments so that the routers can be called for verification
5575 purposes as well.
5576
5577 . If new addresses have been generated by the routers, da capo.
5578*/
5579
5580header_rewritten = FALSE; /* No headers rewritten yet */
5581while (addr_new != NULL) /* Loop until all addresses dealt with */
5582 {
5583 address_item *addr, *parent;
5584 dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE);
5585
5586 /* Failure to open the retry database is treated the same as if it does
5587 not exist. In both cases, dbm_file is NULL. */
5588
5589 if (dbm_file == NULL)
5590 {
5591 DEBUG(D_deliver|D_retry|D_route|D_hints_lookup)
5592 debug_printf("no retry data available\n");
5593 }
5594
5595 /* Scan the current batch of new addresses, to handle pipes, files and
5596 autoreplies, and determine which others are ready for routing. */
5597
5598 while (addr_new != NULL)
5599 {
5600 int rc;
5601 uschar *p;
5602 tree_node *tnode;
5603 dbdata_retry *domain_retry_record;
5604 dbdata_retry *address_retry_record;
5605
5606 addr = addr_new;
5607 addr_new = addr->next;
5608
5609 DEBUG(D_deliver|D_retry|D_route)
5610 {
5611 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
5612 debug_printf("Considering: %s\n", addr->address);
5613 }
5614
5615 /* Handle generated address that is a pipe or a file or an autoreply. */
5616
5617 if (testflag(addr, af_pfr))
5618 {
424a1c63
PH
5619 /* If an autoreply in a filter could not generate a syntactically valid
5620 address, give up forthwith. Set af_ignore_error so that we don't try to
5621 generate a bounce. */
5622
5623 if (testflag(addr, af_bad_reply))
5624 {
5625 addr->basic_errno = ERRNO_BADADDRESS2;
5626 addr->local_part = addr->address;
5627 addr->message =
5628 US"filter autoreply generated syntactically invalid recipient";
5629 setflag(addr, af_ignore_error);
5630 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
5631 continue; /* with the next new address */
5632 }
059ec3d9
PH
5633
5634 /* If two different users specify delivery to the same pipe or file or
5635 autoreply, there should be two different deliveries, so build a unique
5636 string that incorporates the original address, and use this for
5637 duplicate testing and recording delivery, and also for retrying. */
5638
5639 addr->unique =
424a1c63
PH
5640 string_sprintf("%s:%s", addr->address, addr->parent->unique +
5641 (testflag(addr->parent, af_homonym)? 3:0));
059ec3d9
PH
5642
5643 addr->address_retry_key = addr->domain_retry_key =
5644 string_sprintf("T:%s", addr->unique);
5645
5646 /* If a filter file specifies two deliveries to the same pipe or file,
5647 we want to de-duplicate, but this is probably not wanted for two mail
5648 commands to the same address, where probably both should be delivered.
5649 So, we have to invent a different unique string in that case. Just
5650 keep piling '>' characters on the front. */
5651
5652 if (addr->address[0] == '>')
5653 {
5654 while (tree_search(tree_duplicates, addr->unique) != NULL)
5655 addr->unique = string_sprintf(">%s", addr->unique);
5656 }
5657
5658 else if ((tnode = tree_search(tree_duplicates, addr->unique)) != NULL)
5659 {
5660 DEBUG(D_deliver|D_route)
5661 debug_printf("%s is a duplicate address: discarded\n", addr->address);
5662 addr->dupof = tnode->data.ptr;
5663 addr->next = addr_duplicate;
5664 addr_duplicate = addr;
5665 continue;
5666 }
5667
5668 DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
5669
5670 /* Check for previous delivery */
5671
5672 if (tree_search(tree_nonrecipients, addr->unique) != NULL)
5673 {
5674 DEBUG(D_deliver|D_route)
5675 debug_printf("%s was previously delivered: discarded\n", addr->address);
5676 child_done(addr, tod_stamp(tod_log));
5677 continue;
5678 }
5679
5680 /* Save for checking future duplicates */
5681
5682 tree_add_duplicate(addr->unique, addr);
5683
5684 /* Set local part and domain */
5685
5686 addr->local_part = addr->address;
5687 addr->domain = addr->parent->domain;
5688
5689 /* Ensure that the delivery is permitted. */
5690
5691 if (testflag(addr, af_file))
5692 {
5693 if (!testflag(addr, af_allow_file))
5694 {
5695 addr->basic_errno = ERRNO_FORBIDFILE;
5696 addr->message = US"delivery to file forbidden";
5697 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
5698 continue; /* with the next new address */
5699 }
5700 }
5701 else if (addr->address[0] == '|')
5702 {
5703 if (!testflag(addr, af_allow_pipe))
5704 {
5705 addr->basic_errno = ERRNO_FORBIDPIPE;
5706 addr->message = US"delivery to pipe forbidden";
5707 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
5708 continue; /* with the next new address */
5709 }
5710 }
5711 else if (!testflag(addr, af_allow_reply))
5712 {
5713 addr->basic_errno = ERRNO_FORBIDREPLY;
5714 addr->message = US"autoreply forbidden";
5715 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
5716 continue; /* with the next new address */
5717 }
5718
5719 /* If the errno field is already set to BADTRANSPORT, it indicates
5720 failure to expand a transport string, or find the associated transport,
5721 or an unset transport when one is required. Leave this test till now so
5722 that the forbid errors are given in preference. */
5723
5724 if (addr->basic_errno == ERRNO_BADTRANSPORT)
5725 {
5726 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
5727 continue;
5728 }
5729
5730 /* Treat /dev/null as a special case and abandon the delivery. This
5731 avoids having to specify a uid on the transport just for this case.
5732 Arrange for the transport name to be logged as "**bypassed**". */
5733
5734 if (Ustrcmp(addr->address, "/dev/null") == 0)
5735 {
5736 uschar *save = addr->transport->name;
5737 addr->transport->name = US"**bypassed**";
5738 (void)post_process_one(addr, OK, LOG_MAIN, DTYPE_TRANSPORT, '=');
5739 addr->transport->name = save;
5740 continue; /* with the next new address */
5741 }
5742
5743 /* Pipe, file, or autoreply delivery is to go ahead as a normal local
5744 delivery. */
5745
5746 DEBUG(D_deliver|D_route)
5747 debug_printf("queued for %s transport\n", addr->transport->name);
5748 addr->next = addr_local;
5749 addr_local = addr;
5750 continue; /* with the next new address */
5751 }
5752
5753 /* Handle normal addresses. First, split up into local part and domain,
5754 handling the %-hack if necessary. There is the possibility of a defer from
5755 a lookup in percent_hack_domains. */
5756
5757 if ((rc = deliver_split_address(addr)) == DEFER)
5758 {
5759 addr->message = US"cannot check percent_hack_domains";
5760 addr->basic_errno = ERRNO_LISTDEFER;
5761 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
5762 continue;
5763 }
5764
5765 /* Check to see if the domain is held. If so, proceed only if the
5766 delivery was forced by hand. */
5767
5768 deliver_domain = addr->domain; /* set $domain */
5769 if (!forced && hold_domains != NULL &&
5770 (rc = match_isinlist(addr->domain, &hold_domains, 0,
5771 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE,
5772 NULL)) != FAIL)
5773 {
5774 if (rc == DEFER)
5775 {
5776 addr->message = US"hold_domains lookup deferred";
5777 addr->basic_errno = ERRNO_LISTDEFER;
5778 }
5779 else
5780 {
5781 addr->message = US"domain is held";
5782 addr->basic_errno = ERRNO_HELD;
5783 }
5784 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
5785 continue;
5786 }
5787
5788 /* Now we can check for duplicates and previously delivered addresses. In
5789 order to do this, we have to generate a "unique" value for each address,
5790 because there may be identical actual addresses in a line of descendents.
5791 The "unique" field is initialized to the same value as the "address" field,
5792 but gets changed here to cope with identically-named descendents. */
5793
5794 for (parent = addr->parent; parent != NULL; parent = parent->parent)
5795 if (strcmpic(addr->address, parent->address) == 0) break;
5796
5797 /* If there's an ancestor with the same name, set the homonym flag. This
5798 influences how deliveries are recorded. Then add a prefix on the front of
5799 the unique address. We use \n\ where n starts at 0 and increases each time.
5800 It is unlikely to pass 9, but if it does, it may look odd but will still
5801 work. This means that siblings or cousins with the same names are treated
5802 as duplicates, which is what we want. */
5803
5804 if (parent != NULL)
5805 {
5806 setflag(addr, af_homonym);
5807 if (parent->unique[0] != '\\')
5808 addr->unique = string_sprintf("\\0\\%s", addr->address);
5809 else
5810 addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1,
5811 addr->address);
5812 }
5813
5814 /* Ensure that the domain in the unique field is lower cased, because
5815 domains are always handled caselessly. */
5816
5817 p = Ustrrchr(addr->unique, '@');
5818 while (*p != 0) { *p = tolower(*p); p++; }
5819
5820 DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
5821
5822 if (tree_search(tree_nonrecipients, addr->unique) != NULL)
5823 {
5824 DEBUG(D_deliver|D_route)
5825 debug_printf("%s was previously delivered: discarded\n", addr->unique);
5826 child_done(addr, tod_stamp(tod_log));
5827 continue;
5828 }
5829
059ec3d9 5830 /* Get the routing retry status, saving the two retry keys (with and
48c7f9e2
PH
5831 without the local part) for subsequent use. If there is no retry record for
5832 the standard address routing retry key, we look for the same key with the
5833 sender attached, because this form is used by the smtp transport after a
5834 4xx response to RCPT when address_retry_include_sender is true. */
059ec3d9
PH
5835
5836 addr->domain_retry_key = string_sprintf("R:%s", addr->domain);
5837 addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part,
5838 addr->domain);
5839
5840 if (dbm_file == NULL)
5841 domain_retry_record = address_retry_record = NULL;
5842 else
5843 {
5844 domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key);
5845 if (domain_retry_record != NULL &&
5846 now - domain_retry_record->time_stamp > retry_data_expire)
48c7f9e2 5847 domain_retry_record = NULL; /* Ignore if too old */
059ec3d9
PH
5848
5849 address_retry_record = dbfn_read(dbm_file, addr->address_retry_key);
5850 if (address_retry_record != NULL &&
5851 now - address_retry_record->time_stamp > retry_data_expire)
48c7f9e2
PH
5852 address_retry_record = NULL; /* Ignore if too old */
5853
5854 if (address_retry_record == NULL)
5855 {
09945f1e 5856 uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
48c7f9e2
PH
5857 sender_address);
5858 address_retry_record = dbfn_read(dbm_file, altkey);
5859 if (address_retry_record != NULL &&
5860 now - address_retry_record->time_stamp > retry_data_expire)
5861 address_retry_record = NULL; /* Ignore if too old */
5862 }
059ec3d9
PH
5863 }
5864
5865 DEBUG(D_deliver|D_retry)
5866 {
5867 if (domain_retry_record == NULL)
5868 debug_printf("no domain retry record\n");
5869 if (address_retry_record == NULL)
5870 debug_printf("no address retry record\n");
5871 }
5872
5873 /* If we are sending a message down an existing SMTP connection, we must
5874 assume that the message which created the connection managed to route
5875 an address to that connection. We do not want to run the risk of taking
5876 a long time over routing here, because if we do, the server at the other
5877 end of the connection may time it out. This is especially true for messages
5878 with lots of addresses. For this kind of delivery, queue_running is not
5879 set, so we would normally route all addresses. We take a pragmatic approach
5880 and defer routing any addresses that have any kind of domain retry record.
5881 That is, we don't even look at their retry times. It doesn't matter if this
5882 doesn't work occasionally. This is all just an optimization, after all.
5883
5884 The reason for not doing the same for address retries is that they normally
5885 arise from 4xx responses, not DNS timeouts. */
5886
5887 if (continue_hostname != NULL && domain_retry_record != NULL)
5888 {
5889 addr->message = US"reusing SMTP connection skips previous routing defer";
5890 addr->basic_errno = ERRNO_RRETRY;
5891 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
5892 }
5893
f6c332bd
PH
5894 /* If we are in a queue run, defer routing unless there is no retry data or
5895 we've passed the next retry time, or this message is forced. In other
5896 words, ignore retry data when not in a queue run.
5897
5898 However, if the domain retry time has expired, always allow the routing
5899 attempt. If it fails again, the address will be failed. This ensures that
059ec3d9
PH
5900 each address is routed at least once, even after long-term routing
5901 failures.
5902
5903 If there is an address retry, check that too; just wait for the next
5904 retry time. This helps with the case when the temporary error on the
5905 address was really message-specific rather than address specific, since
f6c332bd
PH
5906 it allows other messages through.
5907
5908 We also wait for the next retry time if this is a message sent down an
5909 existing SMTP connection (even though that will be forced). Otherwise there
5910 will be far too many attempts for an address that gets a 4xx error. In
5911 fact, after such an error, we should not get here because, the host should
5912 not be remembered as one this message needs. However, there was a bug that
ba9af0af
TF
5913 used to cause this to happen, so it is best to be on the safe side.
5914
1ddeb334
TF
5915 Even if we haven't reached the retry time in the hints, there is one more
5916 check to do, which is for the ultimate address timeout. We only do this
5917 check if there is an address retry record and there is not a domain retry
5918 record; this implies that previous attempts to handle the address had the
5919 retry_use_local_parts option turned on. We use this as an approximation
5920 for the destination being like a local delivery, for example delivery over
5921 LMTP to an IMAP message store. In this situation users are liable to bump
5922 into their quota and thereby have intermittently successful deliveries,
5923 which keep the retry record fresh, which can lead to us perpetually
5924 deferring messages. */
059ec3d9 5925
f6c332bd
PH
5926 else if (((queue_running && !deliver_force) || continue_hostname != NULL)
5927 &&
059ec3d9
PH
5928 ((domain_retry_record != NULL &&
5929 now < domain_retry_record->next_try &&
5930 !domain_retry_record->expired)
5931 ||
5932 (address_retry_record != NULL &&
5933 now < address_retry_record->next_try))
ba9af0af 5934 &&
1ddeb334
TF
5935 (domain_retry_record != NULL ||
5936 address_retry_record == NULL ||
5937 !retry_ultimate_address_timeout(addr->address_retry_key,
5938 addr->domain, address_retry_record, now)))
059ec3d9
PH
5939 {
5940 addr->message = US"retry time not reached";
5941 addr->basic_errno = ERRNO_RRETRY;
5942 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
5943 }
5944
5945 /* The domain is OK for routing. Remember if retry data exists so it
5946 can be cleaned up after a successful delivery. */
5947
5948 else
5949 {
5950 if (domain_retry_record != NULL || address_retry_record != NULL)
5951 setflag(addr, af_dr_retry_exists);
5952 addr->next = addr_route;
5953 addr_route = addr;
5954 DEBUG(D_deliver|D_route)
5955 debug_printf("%s: queued for routing\n", addr->address);
5956 }
5957 }
5958
5959 /* The database is closed while routing is actually happening. Requests to
5960 update it are put on a chain and all processed together at the end. */
5961
5962 if (dbm_file != NULL) dbfn_close(dbm_file);
5963
5964 /* If queue_domains is set, we don't even want to try routing addresses in
5965 those domains. During queue runs, queue_domains is forced to be unset.
5966 Optimize by skipping this pass through the addresses if nothing is set. */
5967
5968 if (!deliver_force && queue_domains != NULL)
5969 {
5970 address_item *okaddr = NULL;
5971 while (addr_route != NULL)
5972 {
5973 address_item *addr = addr_route;
5974 addr_route = addr->next;
5975
5976 deliver_domain = addr->domain; /* set $domain */
5977 if ((rc = match_isinlist(addr->domain, &queue_domains, 0,
5978 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
5979 != OK)
5980 {
5981 if (rc == DEFER)
5982 {
5983 addr->basic_errno = ERRNO_LISTDEFER;
5984 addr->message = US"queue_domains lookup deferred";
5985 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
5986 }
5987 else
5988 {
5989 addr->next = okaddr;
5990 okaddr = addr;
5991 }
5992 }
5993 else
5994 {
5995 addr->basic_errno = ERRNO_QUEUE_DOMAIN;
5996 addr->message = US"domain is in queue_domains";
5997 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
5998 }
5999 }
6000
6001 addr_route = okaddr;
6002 }
6003
6004 /* Now route those addresses that are not deferred. */
6005
6006 while (addr_route != NULL)
6007 {
6008 int rc;
6009 address_item *addr = addr_route;
6010 uschar *old_domain = addr->domain;
6011 uschar *old_unique = addr->unique;
6012 addr_route = addr->next;
6013 addr->next = NULL;
6014
6015 /* Just in case some router parameter refers to it. */
6016
6017 return_path = (addr->p.errors_address != NULL)?
6018 addr->p.errors_address : sender_address;
6019
6020 /* If a router defers an address, add a retry item. Whether or not to
6021 use the local part in the key is a property of the router. */
6022
6023 if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new,
6024 &addr_succeed, v_none)) == DEFER)
6025 retry_add_item(addr, (addr->router->retry_use_local_part)?
6026 string_sprintf("R:%s@%s", addr->local_part, addr->domain) :
6027 string_sprintf("R:%s", addr->domain), 0);
6028
6029 /* Otherwise, if there is an existing retry record in the database, add
09945f1e
PH
6030 retry items to delete both forms. We must also allow for the possibility
6031 of a routing retry that includes the sender address. Since the domain might
6032 have been rewritten (expanded to fully qualified) as a result of routing,
6033 ensure that the rewritten form is also deleted. */
059ec3d9
PH
6034
6035 else if (testflag(addr, af_dr_retry_exists))
6036 {
09945f1e
PH
6037 uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
6038 sender_address);
6039 retry_add_item(addr, altkey, rf_delete);
059ec3d9
PH
6040 retry_add_item(addr, addr->address_retry_key, rf_delete);
6041 retry_add_item(addr, addr->domain_retry_key, rf_delete);
6042 if (Ustrcmp(addr->domain, old_domain) != 0)
6043 retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete);
6044 }
6045
6046 /* DISCARD is given for :blackhole: and "seen finish". The event has been
6047 logged, but we need to ensure the address (and maybe parents) is marked
6048 done. */
6049
6050 if (rc == DISCARD)
6051 {
6052 address_done(addr, tod_stamp(tod_log));
6053 continue; /* route next address */
6054 }
6055
6056 /* The address is finished with (failed or deferred). */
6057
6058 if (rc != OK)
6059 {
6060 (void)post_process_one(addr, rc, LOG_MAIN, DTYPE_ROUTER, 0);
6061 continue; /* route next address */
6062 }
6063
6064 /* The address has been routed. If the router changed the domain, it will
6065 also have changed the unique address. We have to test whether this address
6066 has already been delivered, because it's the unique address that finally
6067 gets recorded. */
6068
6069 if (addr->unique != old_unique &&
6070 tree_search(tree_nonrecipients, addr->unique) != 0)
6071 {
6072 DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: "
6073 "discarded\n", addr->address);
6074 if (addr_remote == addr) addr_remote = addr->next;
6075 else if (addr_local == addr) addr_local = addr->next;
6076 }
6077
6078 /* If the router has same_domain_copy_routing set, we are permitted to copy
6079 the routing for any other addresses with the same domain. This is an
6080 optimisation to save repeated DNS lookups for "standard" remote domain
6081 routing. The option is settable only on routers that generate host lists.
6082 We play it very safe, and do the optimization only if the address is routed
6083 to a remote transport, there are no header changes, and the domain was not
6084 modified by the router. */
6085
6086 if (addr_remote == addr &&
6087 addr->router->same_domain_copy_routing &&
6088 addr->p.extra_headers == NULL &&
6089 addr->p.remove_headers == NULL &&
6090 old_domain == addr->domain)
6091 {
6092 address_item **chain = &addr_route;
6093 while (*chain != NULL)
6094 {
6095 address_item *addr2 = *chain;
6096 if (Ustrcmp(addr2->domain, addr->domain) != 0)
6097 {
6098 chain = &(addr2->next);
6099 continue;
6100 }
6101
6102 /* Found a suitable address; take it off the routing list and add it to
6103 the remote delivery list. */
6104
6105 *chain = addr2->next;
6106 addr2->next = addr_remote;
6107 addr_remote = addr2;
6108
6109 /* Copy the routing data */
6110
6111 addr2->domain = addr->domain;
6112 addr2->router = addr->router;
6113 addr2->transport = addr->transport;
6114 addr2->host_list = addr->host_list;
6115 addr2->fallback_hosts = addr->fallback_hosts;
6116 addr2->p.errors_address = addr->p.errors_address;
6117 copyflag(addr2, addr, af_hide_child | af_local_host_removed);
6118
6119 DEBUG(D_deliver|D_route)
6120 {
6121 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
6122 "routing %s\n"
6123 "Routing for %s copied from %s\n",
6124 addr2->address, addr2->address, addr->address);
6125 }
6126 }
6127 }
6128 } /* Continue with routing the next address. */
6129 } /* Loop to process any child addresses that the routers created, and
6130 any rerouted addresses that got put back on the new chain. */
6131
6132
6133/* Debugging: show the results of the routing */
6134
6135DEBUG(D_deliver|D_retry|D_route)
6136 {
6137 address_item *p = addr_local;
6138 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
6139 debug_printf("After routing:\n Local deliveries:\n");
6140 while (p != NULL)
6141 {
6142 debug_printf(" %s\n", p->address);
6143 p = p->next;
6144 }
6145
6146 p = addr_remote;
6147 debug_printf(" Remote deliveries:\n");
6148 while (p != NULL)
6149 {
6150 debug_printf(" %s\n", p->address);
6151 p = p->next;
6152 }
6153
6154 p = addr_failed;
6155 debug_printf(" Failed addresses:\n");
6156 while (p != NULL)
6157 {
6158 debug_printf(" %s\n", p->address);
6159 p = p->next;
6160 }
6161
6162 p = addr_defer;
6163 debug_printf(" Deferred addresses:\n");
6164 while (p != NULL)
6165 {
6166 debug_printf(" %s\n", p->address);
6167 p = p->next;
6168 }
6169 }
6170
6171/* Free any resources that were cached during routing. */
6172
6173search_tidyup();
6174route_tidyup();
6175
6176/* These two variables are set only during routing, after check_local_user.
6177Ensure they are not set in transports. */
6178
6179local_user_gid = (gid_t)(-1);
6180local_user_uid = (uid_t)(-1);
6181
d7174846
PH
6182/* Check for any duplicate addresses. This check is delayed until after
6183routing, because the flexibility of the routing configuration means that
6184identical addresses with different parentage may end up being redirected to
6185different addresses. Checking for duplicates too early (as we previously used
6186to) makes this kind of thing not work. */
6187
6188do_duplicate_check(&addr_local);
6189do_duplicate_check(&addr_remote);
6190
059ec3d9
PH
6191/* When acting as an MUA wrapper, we proceed only if all addresses route to a
6192remote transport. The check that they all end up in one transaction happens in
6193the do_remote_deliveries() function. */
6194
6195if (mua_wrapper && (addr_local != NULL || addr_failed != NULL ||
6196 addr_defer != NULL))
6197 {
6198 address_item *addr;
6199 uschar *which, *colon, *msg;
6200
6201 if (addr_local != NULL)
6202 {
6203 addr = addr_local;
6204 which = US"local";
6205 }
6206 else if (addr_defer != NULL)
6207 {
6208 addr = addr_defer;
6209 which = US"deferred";
6210 }
6211 else
6212 {
6213 addr = addr_failed;
6214 which = US"failed";
6215 }
6216
6217 while (addr->parent != NULL) addr = addr->parent;
6218
6219 if (addr->message != NULL)
6220 {
6221 colon = US": ";
6222 msg = addr->message;
6223 }
6224 else colon = msg = US"";
6225
6226 /* We don't need to log here for a forced failure as it will already
6227 have been logged. Defer will also have been logged, but as a defer, so we do
6228 need to do the failure logging. */
6229
6230 if (addr != addr_failed)
6231 log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery",
6232 addr->address, which);
6233
6234 /* Always write an error to the caller */
6235
6236 fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address,
6237 which, colon, msg);
6238
6239 final_yield = DELIVER_MUA_FAILED;
6240 addr_failed = addr_defer = NULL; /* So that we remove the message */
6241 goto DELIVERY_TIDYUP;
6242 }
6243
6244
6245/* If this is a run to continue deliveries to an external channel that is
6246already set up, defer any local deliveries. */
6247
6248if (continue_transport != NULL)
6249 {
6250 if (addr_defer == NULL) addr_defer = addr_local; else
6251 {
6252 address_item *addr = addr_defer;
6253 while (addr->next != NULL) addr = addr->next;
6254 addr->next = addr_local;
6255 }
6256 addr_local = NULL;
6257 }
6258
6259
6260/* Because address rewriting can happen in the routers, we should not really do
6261ANY deliveries until all addresses have been routed, so that all recipients of
6262the message get the same headers. However, this is in practice not always
6263possible, since sometimes remote addresses give DNS timeouts for days on end.
6264The pragmatic approach is to deliver what we can now, saving any rewritten
6265headers so that at least the next lot of recipients benefit from the rewriting
6266that has already been done.
6267
6268If any headers have been rewritten during routing, update the spool file to
6269remember them for all subsequent deliveries. This can be delayed till later if
6270there is only address to be delivered - if it succeeds the spool write need not
6271happen. */
6272
6273if (header_rewritten &&
6274 ((addr_local != NULL &&
6275 (addr_local->next != NULL || addr_remote != NULL)) ||
6276 (addr_remote != NULL && addr_remote->next != NULL)))
6277 {
6278 /* Panic-dies on error */
6279 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
6280 header_rewritten = FALSE;
6281 }
6282
6283
6284/* If there are any deliveries to be done, open the journal file. This is used
6285to record successful deliveries as soon as possible after each delivery is
6286known to be complete. A file opened with O_APPEND is used so that several
6287processes can run simultaneously.
6288
6289The journal is just insurance against crashes. When the spool file is
6290ultimately updated at the end of processing, the journal is deleted. If a
6291journal is found to exist at the start of delivery, the addresses listed
6292therein are added to the non-recipients. */
6293
6294if (addr_local != NULL || addr_remote != NULL)
6295 {
6296 sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
6297 journal_fd = Uopen(spoolname, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE);
6298
6299 if (journal_fd < 0)
6300 {
6301 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s",
6302 spoolname, strerror(errno));
6303 return DELIVER_NOT_ATTEMPTED;
6304 }
6305
6306 /* Set the close-on-exec flag, make the file owned by Exim, and ensure
6307 that the mode is correct - the group setting doesn't always seem to get
6308 set automatically. */
6309
1ac6b2e7
JH
6310 if( fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC)
6311 || fchown(journal_fd, exim_uid, exim_gid)
6312 || fchmod(journal_fd, SPOOL_MODE)
6313 )
6314 {
6315 int ret = Uunlink(spoolname);
6316 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s",
6317 spoolname, strerror(errno));
6318 if(ret && errno != ENOENT)
6319 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
6320 spoolname, strerror(errno));
6321 return DELIVER_NOT_ATTEMPTED;
6322 }
059ec3d9
PH
6323 }
6324
6325
1ac6b2e7 6326
059ec3d9
PH
6327/* Now we can get down to the business of actually doing deliveries. Local
6328deliveries are done first, then remote ones. If ever the problems of how to
6329handle fallback transports are figured out, this section can be put into a loop
6330for handling fallbacks, though the uid switching will have to be revised. */
6331
f1513293
PH
6332/* Precompile a regex that is used to recognize a parameter in response
6333to an LHLO command, if is isn't already compiled. This may be used on both
6334local and remote LMTP deliveries. */
6335
6336if (regex_IGNOREQUOTA == NULL) regex_IGNOREQUOTA =
6337 regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
6338
6339/* Handle local deliveries */
6340
059ec3d9
PH
6341if (addr_local != NULL)
6342 {
6343 DEBUG(D_deliver|D_transport)
6344 debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
6345 do_local_deliveries();
6346 disable_logging = FALSE;
6347 }
6348
6349/* If queue_run_local is set, we do not want to attempt any remote deliveries,
6350so just queue them all. */
6351
6352if (queue_run_local)
6353 {
6354 while (addr_remote != NULL)
6355 {
6356 address_item *addr = addr_remote;
6357 addr_remote = addr->next;
6358 addr->next = NULL;
6359 addr->basic_errno = ERRNO_LOCAL_ONLY;
6360 addr->message = US"remote deliveries suppressed";
6361 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0);
6362 }
6363 }
6364
6365/* Handle remote deliveries */
6366
6367if (addr_remote != NULL)
6368 {
6369 DEBUG(D_deliver|D_transport)
6370 debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
6371
6372 /* Precompile some regex that are used to recognize parameters in response
6373 to an EHLO command, if they aren't already compiled. */
6374
6375 if (regex_PIPELINING == NULL) regex_PIPELINING =
6376 regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE);
6377
6378 if (regex_SIZE == NULL) regex_SIZE =
6379 regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE);
6380
6381 if (regex_AUTH == NULL) regex_AUTH =
6382 regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)",
6383 FALSE, TRUE);
6384
a7538db1 6385#ifdef SUPPORT_TLS
059ec3d9
PH
6386 if (regex_STARTTLS == NULL) regex_STARTTLS =
6387 regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE);
a7538db1 6388#endif
059ec3d9 6389
a7538db1 6390#ifndef DISABLE_PRDR
fd98a5c6
JH
6391 if (regex_PRDR == NULL) regex_PRDR =
6392 regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE);
a7538db1 6393#endif
fd98a5c6 6394
a7538db1 6395#ifdef EXPERIMENTAL_DSN
6c1c3d1d
WB
6396 /* Set the regex to check for DSN support on remote MTA */
6397 if (regex_DSN == NULL) regex_DSN =
6398 regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE);
a7538db1 6399#endif
6c1c3d1d 6400
059ec3d9
PH
6401 /* Now sort the addresses if required, and do the deliveries. The yield of
6402 do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
6403 cannot be delivered in one transaction. */
6404
6405 if (remote_sort_domains != NULL) sort_remote_deliveries();
6406 if (!do_remote_deliveries(FALSE))
6407 {
6408 log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all "
6409 "be delivered in one transaction");
6410 fprintf(stderr, "delivery to smarthost failed (configuration problem)\n");
6411
6412 final_yield = DELIVER_MUA_FAILED;
6413 addr_failed = addr_defer = NULL; /* So that we remove the message */
6414 goto DELIVERY_TIDYUP;
6415 }
6416
6417 /* See if any of the addresses that failed got put on the queue for delivery
6418 to their fallback hosts. We do it this way because often the same fallback
6419 host is used for many domains, so all can be sent in a single transaction
6420 (if appropriately configured). */
6421
6422 if (addr_fallback != NULL && !mua_wrapper)
6423 {
6424 DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n");
6425 addr_remote = addr_fallback;
6426 addr_fallback = NULL;
6427 if (remote_sort_domains != NULL) sort_remote_deliveries();
6428 do_remote_deliveries(TRUE);
6429 }
6430 disable_logging = FALSE;
6431 }
6432
6433
6434/* All deliveries are now complete. Ignore SIGTERM during this tidying up
6435phase, to minimize cases of half-done things. */
6436
6437DEBUG(D_deliver)
6438 debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
6439
6440/* Root privilege is no longer needed */
6441
6442exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying");
6443
6444set_process_info("tidying up after delivering %s", message_id);
6445signal(SIGTERM, SIG_IGN);
6446
6447/* When we are acting as an MUA wrapper, the smtp transport will either have
47c7a64a
PH
6448succeeded for all addresses, or failed them all in normal cases. However, there
6449are some setup situations (e.g. when a named port does not exist) that cause an
6450immediate exit with deferral of all addresses. Convert those into failures. We
6451do not ever want to retry, nor do we want to send a bounce message. */
059ec3d9
PH
6452
6453if (mua_wrapper)
6454 {
47c7a64a
PH
6455 if (addr_defer != NULL)
6456 {
6457 address_item *addr, *nextaddr;
6458 for (addr = addr_defer; addr != NULL; addr = nextaddr)
6459 {
6460 log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred "
6461 "delivery", addr->address);
6462 nextaddr = addr->next;
6463 addr->next = addr_failed;
6464 addr_failed = addr;
6465 }
6466 addr_defer = NULL;
6467 }
6468
6469 /* Now all should either have succeeded or failed. */
6470
059ec3d9
PH
6471 if (addr_failed == NULL) final_yield = DELIVER_MUA_SUCCEEDED; else
6472 {
6473 uschar *s = (addr_failed->user_message != NULL)?
6474 addr_failed->user_message : addr_failed->message;
6475
6476 fprintf(stderr, "Delivery failed: ");
6477 if (addr_failed->basic_errno > 0)
6478 {
6479 fprintf(stderr, "%s", strerror(addr_failed->basic_errno));
6480 if (s != NULL) fprintf(stderr, ": ");
6481 }
6482 if (s == NULL)
6483 {
6484 if (addr_failed->basic_errno <= 0) fprintf(stderr, "unknown error");
6485 }
6486 else fprintf(stderr, "%s", CS s);
6487 fprintf(stderr, "\n");
6488
6489 final_yield = DELIVER_MUA_FAILED;
6490 addr_failed = NULL;
6491 }
6492 }
6493
6494/* In a normal configuration, we now update the retry database. This is done in
6495one fell swoop at the end in order not to keep opening and closing (and
6496locking) the database. The code for handling retries is hived off into a
6497separate module for convenience. We pass it the addresses of the various
6498chains, because deferred addresses can get moved onto the failed chain if the
6499retry cutoff time has expired for all alternative destinations. Bypass the
6500updating of the database if the -N flag is set, which is a debugging thing that
6501prevents actual delivery. */
6502
6503else if (!dont_deliver) retry_update(&addr_defer, &addr_failed, &addr_succeed);
6504
6c1c3d1d
WB
6505#ifdef EXPERIMENTAL_DSN
6506/* Send DSN for successful messages */
6507addr_dsntmp = addr_succeed;
6508addr_senddsn = NULL;
6509
6510while(addr_dsntmp != NULL)
6511 {
6512 DEBUG(D_deliver)
6513 debug_printf("DSN: processing router : %s\n", addr_dsntmp->router->name);
6514
6515 DEBUG(D_deliver)
6516 debug_printf("DSN: processing successful delivery address: %s\n", addr_dsntmp->address);
6517
6518 /* af_ignore_error not honored here. it's not an error */
6519
6520 DEBUG(D_deliver) debug_printf("DSN: Sender_address: %s\n", sender_address);
6521 DEBUG(D_deliver) debug_printf("DSN: orcpt: %s flags: %d\n", addr_dsntmp->dsn_orcpt, addr_dsntmp->dsn_flags);
6522 DEBUG(D_deliver) debug_printf("DSN: envid: %s ret: %d\n", dsn_envid, dsn_ret);
6523 DEBUG(D_deliver) debug_printf("DSN: Final recipient: %s\n", addr_dsntmp->address);
6524 DEBUG(D_deliver) debug_printf("DSN: Remote SMTP server supports DSN: %d\n", addr_dsntmp->dsn_aware);
6525
6526 /* send report if next hop not DSN aware or a router flagged "last DSN hop"
6527 and a report was requested */
6528 if (((addr_dsntmp->dsn_aware != dsn_support_yes) ||
6529 ((addr_dsntmp->dsn_flags & rf_dsnlasthop) != 0))
6530 &&
6531 (((addr_dsntmp->dsn_flags & rf_dsnflags) != 0) &&
6532 ((addr_dsntmp->dsn_flags & rf_notify_success) != 0)))
6533 {
6534 /* copy and relink address_item and send report with all of them at once later */
6535 address_item *addr_next;
6536 addr_next = addr_senddsn;
6537 addr_senddsn = store_get(sizeof(address_item));
6538 memcpy(addr_senddsn, addr_dsntmp, sizeof(address_item));
6539 addr_senddsn->next = addr_next;
6540 }
6541 else
6542 {
6543 DEBUG(D_deliver) debug_printf("DSN: *** NOT SENDING DSN SUCCESS Message ***\n");
6544 }
6545
6546 addr_dsntmp = addr_dsntmp->next;
6547 }
6548
6549if (addr_senddsn != NULL)
6550 {
6551 pid_t pid;
6552 int fd;
6553
6554 /* create exim process to send message */
6555 pid = child_open_exim(&fd);
6556
6557 DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid);
6558
6559 if (pid < 0) /* Creation of child failed */
6560 {
6561 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
6562 "create child process to send failure message: %s", getpid(),
6563 getppid(), strerror(errno));
6564
6565 DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n");
6566
6567 }
6568 else /* Creation of child succeeded */
6569 {
6570 FILE *f = fdopen(fd, "wb");
6571 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
6572 int topt = topt_add_return_path | topt_no_body;
6573 uschar boundaryStr[64];
6574
6575 DEBUG(D_deliver) debug_printf("sending error message to: %s\n", sender_address);
6576
6577 /* build unique id for MIME boundary */
19050083
JH
6578 snprintf(boundaryStr, sizeof(boundaryStr)-1, TIME_T_FMT "-eximdsn-%d",
6579 time(NULL), rand());
6c1c3d1d
WB
6580 DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", boundaryStr);
6581
c007c974
JH
6582 if (errors_reply_to)
6583 fprintf(f, "Reply-To: %s\n", errors_reply_to);
6c1c3d1d 6584
c007c974
JH
6585 fprintf(f, "Auto-Submitted: auto-generated\n"
6586 "From: Mail Delivery System <Mailer-Daemon@%s>\n"
6587 "To: %s\n"
6588 "Subject: Delivery Status Notification\n"
6589 "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n"
6590 "MIME-Version: 1.0\n\n"
6591
6592 "--%s\n"
6593 "Content-type: text/plain; charset=us-ascii\n\n"
6c1c3d1d 6594
c007c974 6595 "This message was created automatically by mail delivery software.\n"
8864c2c4
JH
6596 " ----- The following addresses had successful delivery notifications -----\n",
6597 qualify_domain_sender, sender_address, boundaryStr, boundaryStr);
6c1c3d1d
WB
6598
6599 addr_dsntmp = addr_senddsn;
c007c974 6600 while(addr_dsntmp)
6c1c3d1d 6601 {
c007c974
JH
6602 fprintf(f, "<%s> (relayed %s)\n\n",
6603 addr_dsntmp->address,
6604 (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1
6605 ? "via non DSN router"
6606 : addr_dsntmp->dsn_aware == dsn_support_no
6607 ? "to non-DSN-aware mailer"
6608 : "via non \"Remote SMTP\" router"
6609 );
6c1c3d1d
WB
6610 addr_dsntmp = addr_dsntmp->next;
6611 }
c007c974
JH
6612 fprintf(f, "--%s\n"
6613 "Content-type: message/delivery-status\n\n"
6614 "Reporting-MTA: dns; %s\n",
6615 boundaryStr, smtp_active_hostname);
6616
6c1c3d1d
WB
6617 if (dsn_envid != NULL) {
6618 /* must be decoded from xtext: see RFC 3461:6.3a */
6619 uschar *xdec_envid;
6620 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
c007c974 6621 fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
6c1c3d1d 6622 else
c007c974 6623 fprintf(f, "X-Original-Envelope-ID: error decoding xtext formated ENVID\n");
6c1c3d1d 6624 }
c007c974 6625 fputc('\n', f);
6c1c3d1d 6626
c007c974
JH
6627 for (addr_dsntmp = addr_senddsn;
6628 addr_dsntmp;
6629 addr_dsntmp = addr_dsntmp->next)
6c1c3d1d 6630 {
c007c974 6631 if (addr_dsntmp->dsn_orcpt)
6c1c3d1d 6632 fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt);
c007c974
JH
6633
6634 fprintf(f, "Action: delivered\n"
6635 "Final-Recipient: rfc822;%s\n"
6636 "Status: 2.0.0\n",
6637 addr_dsntmp->address);
6638
6639 if (addr_dsntmp->host_used && addr_dsntmp->host_used->name)
6640 fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n",
6641 addr_dsntmp->host_used->name);
6c1c3d1d 6642 else
c007c974
JH
6643 fprintf(f,"Diagnostic-Code: X-Exim; relayed via non %s router\n",
6644 (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 ? "DSN" : "SMTP");
6645 fputc('\n', f);
6c1c3d1d
WB
6646 }
6647
c007c974 6648 fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", boundaryStr);
6c1c3d1d
WB
6649
6650 fflush(f);
6651 transport_filter_argv = NULL; /* Just in case */
6652 return_path = sender_address; /* In case not previously set */
6653
6654 /* Write the original email out */
6655 transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0);
6656 fflush(f);
6657
6658 fprintf(f,"\n");
6659 fprintf(f,"--%s--\n", boundaryStr);
6660
6661 fflush(f);
6662 fclose(f);
6663 rc = child_close(pid, 0); /* Waits for child to close, no timeout */
6664 }
6665 }
c007c974 6666#endif /*EXPERIMENTAL_DSN*/
6c1c3d1d 6667
059ec3d9
PH
6668/* If any addresses failed, we must send a message to somebody, unless
6669af_ignore_error is set, in which case no action is taken. It is possible for
6670several messages to get sent if there are addresses with different
6671requirements. */
6672
6673while (addr_failed != NULL)
6674 {
6675 pid_t pid;
6676 int fd;
6677 uschar *logtod = tod_stamp(tod_log);
6678 address_item *addr;
6679 address_item *handled_addr = NULL;
6680 address_item **paddr;
6681 address_item *msgchain = NULL;
6682 address_item **pmsgchain = &msgchain;
6683
6684 /* There are weird cases when logging is disabled in the transport. However,
6685 there may not be a transport (address failed by a router). */
6686
6687 disable_logging = FALSE;
6688 if (addr_failed->transport != NULL)
6689 disable_logging = addr_failed->transport->disable_logging;
6690
6691 DEBUG(D_deliver)
6692 debug_printf("processing failed address %s\n", addr_failed->address);
6693
6694 /* There are only two ways an address in a bounce message can get here:
6695
6696 (1) When delivery was initially deferred, but has now timed out (in the call
6697 to retry_update() above). We can detect this by testing for
6698 af_retry_timedout. If the address does not have its own errors address,
6699 we arrange to ignore the error.
6700
6701 (2) If delivery failures for bounce messages are being ignored. We can detect
6702 this by testing for af_ignore_error. This will also be set if a bounce
6703 message has been autothawed and the ignore_bounce_errors_after time has
6704 passed. It might also be set if a router was explicitly configured to
6705 ignore errors (errors_to = "").
6706
6707 If neither of these cases obtains, something has gone wrong. Log the
6708 incident, but then ignore the error. */
6709
6710 if (sender_address[0] == 0 && addr_failed->p.errors_address == NULL)
6711 {
6712 if (!testflag(addr_failed, af_retry_timedout) &&
6713 !testflag(addr_failed, af_ignore_error))
6714 {
6715 log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message "
6716 "failure is neither frozen nor ignored (it's been ignored)");
6717 }
6718 setflag(addr_failed, af_ignore_error);
6719 }
6720
6721 /* If the first address on the list has af_ignore_error set, just remove
6722 it from the list, throw away any saved message file, log it, and
6723 mark the recipient done. */
6724
6c1c3d1d
WB
6725 if (testflag(addr_failed, af_ignore_error)
6726#ifdef EXPERIMENTAL_DSN
6727 || (((addr_failed->dsn_flags & rf_dsnflags) != 0)
6728 && ((addr_failed->dsn_flags & rf_notify_failure) != rf_notify_failure))
6729#endif
6730 )
6731 {
059ec3d9
PH
6732 addr = addr_failed;
6733 addr_failed = addr->next;
6734 if (addr->return_filename != NULL) Uunlink(addr->return_filename);
6735
6736 log_write(0, LOG_MAIN, "%s%s%s%s: error ignored",
6737 addr->address,
6738 (addr->parent == NULL)? US"" : US" <",
6739 (addr->parent == NULL)? US"" : addr->parent->address,
6740 (addr->parent == NULL)? US"" : US">");
6741
6742 address_done(addr, logtod);
6743 child_done(addr, logtod);
6744 /* Panic-dies on error */
6745 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
6746 }
6747
6748 /* Otherwise, handle the sending of a message. Find the error address for
6749 the first address, then send a message that includes all failed addresses
6750 that have the same error address. Note the bounce_recipient is a global so
6751 that it can be accesssed by $bounce_recipient while creating a customized
6752 error message. */
6753
6754 else
6755 {
6756 bounce_recipient = (addr_failed->p.errors_address == NULL)?
6757 sender_address : addr_failed->p.errors_address;
6758
6759 /* Make a subprocess to send a message */
6760
6761 pid = child_open_exim(&fd);
6762
6763 /* Creation of child failed */
6764
6765 if (pid < 0)
6766 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
6767 "create child process to send failure message: %s", getpid(),
6768 getppid(), strerror(errno));
6769
6770 /* Creation of child succeeded */
6771
6772 else
6773 {
6774 int ch, rc;
6775 int filecount = 0;
6776 int rcount = 0;
6777 uschar *bcc, *emf_text;
6778 FILE *f = fdopen(fd, "wb");
6779 FILE *emf = NULL;
6780 BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0;
6781 int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) *
6782 DELIVER_IN_BUFFER_SIZE;
0f9d3aea
JH
6783#ifdef EXPERIMENTAL_DSN
6784 uschar boundaryStr[64];
6785 uschar *dsnlimitmsg;
6786 uschar *dsnnotifyhdr;
6787 int topt;
6788#endif
059ec3d9
PH
6789
6790 DEBUG(D_deliver)
6791 debug_printf("sending error message to: %s\n", bounce_recipient);
6792
6793 /* Scan the addresses for all that have the same errors address, removing
6794 them from the addr_failed chain, and putting them on msgchain. */
6795
6796 paddr = &addr_failed;
6797 for (addr = addr_failed; addr != NULL; addr = *paddr)
6798 {
6799 if (Ustrcmp(bounce_recipient, (addr->p.errors_address == NULL)?
6800 sender_address : addr->p.errors_address) != 0)
6801 {
6802 paddr = &(addr->next); /* Not the same; skip */
6803 }
6804 else /* The same - dechain */
6805 {
6806 *paddr = addr->next;
6807 *pmsgchain = addr;
6808 addr->next = NULL;
6809 pmsgchain = &(addr->next);
6810 }
6811 }
6812
6813 /* Include X-Failed-Recipients: for automatic interpretation, but do
6814 not let any one header line get too long. We do this by starting a
6815 new header every 50 recipients. Omit any addresses for which the
6816 "hide_child" flag is set. */
6817
6818 for (addr = msgchain; addr != NULL; addr = addr->next)
6819 {
6820 if (testflag(addr, af_hide_child)) continue;
6821 if (rcount >= 50)
6822 {
6823 fprintf(f, "\n");
6824 rcount = 0;
6825 }
6826 fprintf(f, "%s%s",
6827 (rcount++ == 0)? "X-Failed-Recipients: " : ",\n ",
6828 (testflag(addr, af_pfr) && addr->parent != NULL)?
6829 string_printing(addr->parent->address) :
6830 string_printing(addr->address));
6831 }
6832 if (rcount > 0) fprintf(f, "\n");
6833
6834 /* Output the standard headers */
6835
6836 if (errors_reply_to != NULL)
6837 fprintf(f, "Reply-To: %s\n", errors_reply_to);
456682f5 6838 fprintf(f, "Auto-Submitted: auto-replied\n");
0e22dfd1 6839 moan_write_from(f);
059ec3d9
PH
6840 fprintf(f, "To: %s\n", bounce_recipient);
6841
6c1c3d1d
WB
6842#ifdef EXPERIMENTAL_DSN
6843 /* generate boundary string and output MIME-Headers */
c007c974
JH
6844 snprintf(boundaryStr, sizeof(boundaryStr)-1, TIME_T_FMT "-eximdsn-%d",
6845 time(NULL), rand());
6846
6847 fprintf(f, "Content-Type: multipart/report;"
6848 " report-type=delivery-status; boundary=%s\n"
6849 "MIME-Version: 1.0\n",
6850 boundaryStr);
6c1c3d1d
WB
6851#endif
6852
059ec3d9
PH
6853 /* Open a template file if one is provided. Log failure to open, but
6854 carry on - default texts will be used. */
6855
c007c974
JH
6856 if (bounce_message_file)
6857 if (!(emf = Ufopen(bounce_message_file, "rb")))
059ec3d9
PH
6858 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error "
6859 "message texts: %s", bounce_message_file, strerror(errno));
059ec3d9
PH
6860
6861 /* Quietly copy to configured additional addresses if required. */
6862
c007c974
JH
6863 if ((bcc = moan_check_errorcopy(bounce_recipient)))
6864 fprintf(f, "Bcc: %s\n", bcc);
059ec3d9
PH
6865
6866 /* The texts for the message can be read from a template file; if there
6867 isn't one, or if it is too short, built-in texts are used. The first
6868 emf text is a Subject: and any other headers. */
6869
c007c974
JH
6870 if ((emf_text = next_emf(emf, US"header")))
6871 fprintf(f, "%s\n", emf_text);
6872 else
059ec3d9
PH
6873 fprintf(f, "Subject: Mail delivery failed%s\n\n",
6874 to_sender? ": returning message to sender" : "");
059ec3d9 6875
6c1c3d1d
WB
6876#ifdef EXPERIMENTAL_DSN
6877 /* output human readable part as text/plain section */
c007c974
JH
6878 fprintf(f, "--%s\n"
6879 "Content-type: text/plain; charset=us-ascii\n\n",
6880 boundaryStr);
6c1c3d1d
WB
6881#endif
6882
c007c974
JH
6883 if ((emf_text = next_emf(emf, US"intro")))
6884 fprintf(f, "%s", CS emf_text);
6885 else
059ec3d9
PH
6886 {
6887 fprintf(f,
6888/* This message has been reworded several times. It seems to be confusing to
6889somebody, however it is worded. I have retreated to the original, simple
6890wording. */
6891"This message was created automatically by mail delivery software.\n");
c007c974
JH
6892
6893 if (bounce_message_text)
6894 fprintf(f, "%s", CS bounce_message_text);
059ec3d9 6895 if (to_sender)
059ec3d9
PH
6896 fprintf(f,
6897"\nA message that you sent could not be delivered to one or more of its\n"
6898"recipients. This is a permanent error. The following address(es) failed:\n");
059ec3d9 6899 else
059ec3d9
PH
6900 fprintf(f,
6901"\nA message sent by\n\n <%s>\n\n"
6902"could not be delivered to one or more of its recipients. The following\n"
6903"address(es) failed:\n", sender_address);
059ec3d9 6904 }
c007c974 6905 fputc('\n', f);
059ec3d9
PH
6906
6907 /* Process the addresses, leaving them on the msgchain if they have a
6908 file name for a return message. (There has already been a check in
447d236c
PH
6909 post_process_one() for the existence of data in the message file.) A TRUE
6910 return from print_address_information() means that the address is not
6911 hidden. */
059ec3d9
PH
6912
6913 paddr = &msgchain;
6914 for (addr = msgchain; addr != NULL; addr = *paddr)
6915 {
6916 if (print_address_information(addr, f, US" ", US"\n ", US""))
447d236c 6917 print_address_error(addr, f, US"");
059ec3d9
PH
6918
6919 /* End the final line for the address */
6920
6921 fputc('\n', f);
6922
6923 /* Leave on msgchain if there's a return file. */
6924
6925 if (addr->return_file >= 0)
6926 {
6927 paddr = &(addr->next);
6928 filecount++;
6929 }
6930
6931 /* Else save so that we can tick off the recipient when the
6932 message is sent. */
6933
6934 else
6935 {
6936 *paddr = addr->next;
6937 addr->next = handled_addr;
6938 handled_addr = addr;
6939 }
6940 }
6941
c007c974 6942 fputc('\n', f);
059ec3d9
PH
6943
6944 /* Get the next text, whether we need it or not, so as to be
6945 positioned for the one after. */
6946
6947 emf_text = next_emf(emf, US"generated text");
6948
6949 /* If there were any file messages passed by the local transports,
6950 include them in the message. Then put the address on the handled chain.
6951 In the case of a batch of addresses that were all sent to the same
6952 transport, the return_file field in all of them will contain the same
6953 fd, and the return_filename field in the *last* one will be set (to the
6954 name of the file). */
6955
c007c974 6956 if (msgchain)
059ec3d9
PH
6957 {
6958 address_item *nextaddr;
6959
c007c974
JH
6960 if (emf_text)
6961 fprintf(f, "%s", CS emf_text);
6962 else
059ec3d9
PH
6963 fprintf(f,
6964 "The following text was generated during the delivery "
6965 "attempt%s:\n", (filecount > 1)? "s" : "");
6966
6967 for (addr = msgchain; addr != NULL; addr = nextaddr)
6968 {
6969 FILE *fm;
6970 address_item *topaddr = addr;
6971
6972 /* List all the addresses that relate to this file */
6973
c007c974
JH
6974 fputc('\n', f);
6975 while(addr) /* Insurance */
059ec3d9
PH
6976 {
6977 print_address_information(addr, f, US"------ ", US"\n ",
6978 US" ------\n");
c007c974 6979 if (addr->return_filename) break;
059ec3d9
PH
6980 addr = addr->next;
6981 }
c007c974 6982 fputc('\n', f);
059ec3d9
PH
6983
6984 /* Now copy the file */
6985
6986 fm = Ufopen(addr->return_filename, "rb");
6987
6988 if (fm == NULL)
6989 fprintf(f, " +++ Exim error... failed to open text file: %s\n",
6990 strerror(errno));
6991 else
6992 {
6993 while ((ch = fgetc(fm)) != EOF) fputc(ch, f);
f1e894f3 6994 (void)fclose(fm);
059ec3d9
PH
6995 }
6996 Uunlink(addr->return_filename);
6997
6998 /* Can now add to handled chain, first fishing off the next
6999 address on the msgchain. */
7000
7001 nextaddr = addr->next;
7002 addr->next = handled_addr;
7003 handled_addr = topaddr;
7004 }
c007c974 7005 fputc('\n', f);
059ec3d9
PH
7006 }
7007
6c1c3d1d
WB
7008#ifdef EXPERIMENTAL_DSN
7009 /* output machine readable part */
c007c974
JH
7010 fprintf(f, "--%s\n"
7011 "Content-type: message/delivery-status\n\n"
7012 "Reporting-MTA: dns; %s\n",
7013 boundaryStr, smtp_active_hostname);
7014
7015 if (dsn_envid)
7016 {
6c1c3d1d
WB
7017 /* must be decoded from xtext: see RFC 3461:6.3a */
7018 uschar *xdec_envid;
7019 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
c007c974 7020 fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
6c1c3d1d 7021 else
c007c974 7022 fprintf(f, "X-Original-Envelope-ID: error decoding xtext formated ENVID\n");
6c1c3d1d 7023 }
c007c974 7024 fputc('\n', f);
6c1c3d1d 7025
c007c974 7026 for (addr = handled_addr; addr; addr = addr->next)
6c1c3d1d 7027 {
c007c974 7028 fprintf(f, "Action: failed\n"
8864c2c4
JH
7029 "Final-Recipient: rfc822;%s\n"
7030 "Status: 5.0.0\n",
7031 addr->address);
c007c974
JH
7032 if (addr->host_used && addr->host_used->name)
7033 fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; %d\n",
7034 addr->host_used->name, addr->basic_errno);
6c1c3d1d
WB
7035 }
7036#endif
7037
059ec3d9
PH
7038 /* Now copy the message, trying to give an intelligible comment if
7039 it is too long for it all to be copied. The limit isn't strictly
7040 applied because of the buffering. There is, however, an option
7041 to suppress copying altogether. */
7042
7043 emf_text = next_emf(emf, US"copy");
7044
6c1c3d1d 7045#ifndef EXPERIMENTAL_DSN
059ec3d9
PH
7046 if (bounce_return_message)
7047 {
7048 int topt = topt_add_return_path;
7049 if (!bounce_return_body) topt |= topt_no_body;
7050
c007c974
JH
7051 if (emf_text)
7052 fprintf(f, "%s", CS emf_text);
7053 else
059ec3d9
PH
7054 {
7055 if (bounce_return_body) fprintf(f,
7056"------ This is a copy of the message, including all the headers. ------\n");
7057 else fprintf(f,
7058"------ This is a copy of the message's headers. ------\n");
7059 }
7060
7061 /* While reading the "truncated" message, set return_size_limit to
7062 the actual max testing value, rounded. We need to read the message
7063 whether we are going to use it or not. */
7064
7065 {
7066 int temp = bounce_return_size_limit;
7067 bounce_return_size_limit = (max/1000)*1000;
7068 emf_text = next_emf(emf, US"truncated");
7069 bounce_return_size_limit = temp;
7070 }
7071
7072 if (bounce_return_body && bounce_return_size_limit > 0)
7073 {
7074 struct stat statbuf;
7075 if (fstat(deliver_datafile, &statbuf) == 0 && statbuf.st_size > max)
85098ee7 7076 {
c007c974
JH
7077 if (emf_text)
7078 fprintf(f, "%s", CS emf_text);
7079 else
059ec3d9 7080 fprintf(f,
b1c749bb
PH
7081"------ The body of the message is " OFF_T_FMT " characters long; only the first\n"
7082"------ %d or so are included here.\n", statbuf.st_size, max);
85098ee7 7083 }
059ec3d9
PH
7084 }
7085
c007c974 7086 fputc('\n', f);
059ec3d9 7087 fflush(f);
c007c974 7088
059ec3d9
PH
7089 transport_filter_argv = NULL; /* Just in case */
7090 return_path = sender_address; /* In case not previously set */
7091 transport_write_message(NULL, fileno(f), topt,
7092 bounce_return_size_limit, NULL, NULL, NULL, NULL, NULL, 0);
7093 }
7094
7095 /* Write final text and close the template file if one is open */
7096
c007c974 7097 if (emf)
059ec3d9 7098 {
c007c974
JH
7099 if ((emf_text = next_emf(emf, US"final")))
7100 fprintf(f, "%s", CS emf_text);
f1e894f3 7101 (void)fclose(emf);
059ec3d9 7102 }
6c1c3d1d
WB
7103#else
7104 /* add message body
7105 we ignore the intro text from template and add
7106 the text for bounce_return_size_limit at the end.
7107
7108 bounce_return_message is ignored
7109 in case RET= is defined we honor these values
7110 otherwise bounce_return_body is honored.
7111
7112 bounce_return_size_limit is always honored.
7113 */
7114
c007c974 7115 fprintf(f, "\n--%s\n", boundaryStr);
6c1c3d1d 7116
0f9d3aea
JH
7117 dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned";
7118 dsnnotifyhdr = NULL;
7119 topt = topt_add_return_path;
7120
6c1c3d1d
WB
7121 /* RET=HDRS? top priority */
7122 if (dsn_ret == dsn_ret_hdrs)
7123 topt |= topt_no_body;
7124 else
7125 /* no full body return at all? */
7126 if (!bounce_return_body)
7127 {
7128 topt |= topt_no_body;
7129 /* add header if we overrule RET=FULL */
7130 if (dsn_ret == dsn_ret_full)
7131 dsnnotifyhdr = dsnlimitmsg;
7132 }
7133 /* size limited ... return headers only if limit reached */
7134 else if (bounce_return_size_limit > 0)
7135 {
7136 struct stat statbuf;
7137 if (fstat(deliver_datafile, &statbuf) == 0 && statbuf.st_size > max)
7138 {
7139 topt |= topt_no_body;
7140 dsnnotifyhdr = dsnlimitmsg;
7141 }
7142 }
7143
7144 if (topt & topt_no_body)
7145 fprintf(f,"Content-type: text/rfc822-headers\n\n");
7146 else
7147 fprintf(f,"Content-type: message/rfc822\n\n");
7148
7149 fflush(f);
7150 transport_filter_argv = NULL; /* Just in case */
7151 return_path = sender_address; /* In case not previously set */
7152 transport_write_message(NULL, fileno(f), topt,
7153 0, dsnnotifyhdr, NULL, NULL, NULL, NULL, 0);
7154 fflush(f);
7155
7156 /* we never add the final text. close the file */
c007c974 7157 if (emf)
6c1c3d1d
WB
7158 (void)fclose(emf);
7159
c007c974
JH
7160 fprintf(f, "\n--%s--\n", boundaryStr);
7161#endif /*EXPERIMENTAL_DSN*/
059ec3d9
PH
7162
7163 /* Close the file, which should send an EOF to the child process
7164 that is receiving the message. Wait for it to finish. */
7165
f1e894f3 7166 (void)fclose(f);
059ec3d9
PH
7167 rc = child_close(pid, 0); /* Waits for child to close, no timeout */
7168
7169 /* In the test harness, let the child do it's thing first. */
7170
7171 if (running_in_test_harness) millisleep(500);
7172
7173 /* If the process failed, there was some disaster in setting up the
7174 error message. Unless the message is very old, ensure that addr_defer
7175 is non-null, which will have the effect of leaving the message on the
7176 spool. The failed addresses will get tried again next time. However, we
7177 don't really want this to happen too often, so freeze the message unless
7178 there are some genuine deferred addresses to try. To do this we have
7179 to call spool_write_header() here, because with no genuine deferred
7180 addresses the normal code below doesn't get run. */
7181
7182 if (rc != 0)
7183 {
7184 uschar *s = US"";
7185 if (now - received_time < retry_maximum_timeout && addr_defer == NULL)
7186 {
7187 addr_defer = (address_item *)(+1);
7188 deliver_freeze = TRUE;
7189 deliver_frozen_at = time(NULL);
7190 /* Panic-dies on error */
7191 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7192 s = US" (frozen)";
7193 }
7194 deliver_msglog("Process failed (%d) when writing error message "
7195 "to %s%s", rc, bounce_recipient, s);
7196 log_write(0, LOG_MAIN, "Process failed (%d) when writing error message "
7197 "to %s%s", rc, bounce_recipient, s);
7198 }
7199
7200 /* The message succeeded. Ensure that the recipients that failed are
7201 now marked finished with on the spool and their parents updated. */
7202
7203 else
7204 {
7205 for (addr = handled_addr; addr != NULL; addr = addr->next)
7206 {
7207 address_done(addr, logtod);
7208 child_done(addr, logtod);
7209 }
7210 /* Panic-dies on error */
7211 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7212 }
7213 }
7214 }
7215 }
7216
7217disable_logging = FALSE; /* In case left set */
7218
7219/* Come here from the mua_wrapper case if routing goes wrong */
7220
7221DELIVERY_TIDYUP:
7222
7223/* If there are now no deferred addresses, we are done. Preserve the
7224message log if so configured, and we are using them. Otherwise, sling it.
7225Then delete the message itself. */
7226
7227if (addr_defer == NULL)
7228 {
7229 if (message_logs)
7230 {
7231 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir,
7232 id);
7233 if (preserve_message_logs)
7234 {
7235 int rc;
7236 sprintf(CS big_buffer, "%s/msglog.OLD/%s", spool_directory, id);
7237 if ((rc = Urename(spoolname, big_buffer)) < 0)
7238 {
7239 (void)directory_make(spool_directory, US"msglog.OLD",
7240 MSGLOG_DIRECTORY_MODE, TRUE);
7241 rc = Urename(spoolname, big_buffer);
7242 }
7243 if (rc < 0)
7244 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the "
7245 "msglog.OLD directory", spoolname);
7246 }
7247 else
7248 {
7249 if (Uunlink(spoolname) < 0)
0761d44e
TF
7250 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7251 spoolname, strerror(errno));
059ec3d9
PH
7252 }
7253 }
7254
7255 /* Remove the two message files. */
8e669ac1 7256
059ec3d9
PH
7257 sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id);
7258 if (Uunlink(spoolname) < 0)
0ca0cf52
TF
7259 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7260 spoolname, strerror(errno));
059ec3d9
PH
7261 sprintf(CS spoolname, "%s/input/%s/%s-H", spool_directory, message_subdir, id);
7262 if (Uunlink(spoolname) < 0)
0ca0cf52
TF
7263 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7264 spoolname, strerror(errno));
2ac0e484
PH
7265
7266 /* Log the end of this message, with queue time if requested. */
7267
7268 if ((log_extra_selector & LX_queue_time_overall) != 0)
8e669ac1 7269 log_write(0, LOG_MAIN, "Completed QT=%s",
19050083 7270 readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
2ac0e484
PH
7271 else
7272 log_write(0, LOG_MAIN, "Completed");
0e8a9471
MH
7273
7274 /* Unset deliver_freeze so that we won't try to move the spool files further down */
7275 deliver_freeze = FALSE;
14a465c3
JH
7276
7277#ifdef EXPERIMENTAL_TPDA
7278 (void) tpda_raise_event(delivery_event_action, US"msg:complete", NULL);
7279#endif
7280}
059ec3d9
PH
7281
7282/* If there are deferred addresses, we are keeping this message because it is
7283not yet completed. Lose any temporary files that were catching output from
7284pipes for any of the deferred addresses, handle one-time aliases, and see if
7285the message has been on the queue for so long that it is time to send a warning
7286message to the sender, unless it is a mailer-daemon. If all deferred addresses
7287have the same domain, we can set deliver_domain for the expansion of
7288delay_warning_ condition - if any of them are pipes, files, or autoreplies, use
7289the parent's domain.
7290
7291If all the deferred addresses have an error number that indicates "retry time
7292not reached", skip sending the warning message, because it won't contain the
7293reason for the delay. It will get sent at the next real delivery attempt.
7294However, if at least one address has tried, we'd better include all of them in
7295the message.
7296
7297If we can't make a process to send the message, don't worry.
7298
7299For mailing list expansions we want to send the warning message to the
7300mailing list manager. We can't do a perfect job here, as some addresses may
7301have different errors addresses, but if we take the errors address from
7302each deferred address it will probably be right in most cases.
7303
7304If addr_defer == +1, it means there was a problem sending an error message
7305for failed addresses, and there were no "real" deferred addresses. The value
7306was set just to keep the message on the spool, so there is nothing to do here.
7307*/
7308
7309else if (addr_defer != (address_item *)(+1))
7310 {
7311 address_item *addr;
7312 uschar *recipients = US"";
7313 BOOL delivery_attempted = FALSE;
7314
7315 deliver_domain = testflag(addr_defer, af_pfr)?
7316 addr_defer->parent->domain : addr_defer->domain;
7317
7318 for (addr = addr_defer; addr != NULL; addr = addr->next)
7319 {
7320 address_item *otaddr;
7321
7322 if (addr->basic_errno > ERRNO_RETRY_BASE) delivery_attempted = TRUE;
7323
7324 if (deliver_domain != NULL)
7325 {
7326 uschar *d = (testflag(addr, af_pfr))? addr->parent->domain : addr->domain;
7327
7328 /* The domain may be unset for an address that has never been routed
7329 because the system filter froze the message. */
7330
7331 if (d == NULL || Ustrcmp(d, deliver_domain) != 0) deliver_domain = NULL;
7332 }
7333
7334 if (addr->return_filename != NULL) Uunlink(addr->return_filename);
7335
7336 /* Handle the case of one-time aliases. If any address in the ancestry
7337 of this one is flagged, ensure it is in the recipients list, suitably
7338 flagged, and that its parent is marked delivered. */
7339
7340 for (otaddr = addr; otaddr != NULL; otaddr = otaddr->parent)
7341 if (otaddr->onetime_parent != NULL) break;
7342
7343 if (otaddr != NULL)
7344 {
7345 int i;
7346 int t = recipients_count;
7347
7348 for (i = 0; i < recipients_count; i++)
7349 {
7350 uschar *r = recipients_list[i].address;
7351 if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i;
7352 if (Ustrcmp(otaddr->address, r) == 0) break;
7353 }
7354
7355 /* Didn't find the address already in the list, and did find the
7356 ultimate parent's address in the list. After adding the recipient,
7357 update the errors address in the recipients list. */
7358
7359 if (i >= recipients_count && t < recipients_count)
7360 {
7361 DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n",
7362 otaddr->address, otaddr->parent->address);
7363 receive_add_recipient(otaddr->address, t);
7364 recipients_list[recipients_count-1].errors_to = otaddr->p.errors_address;
7365 tree_add_nonrecipient(otaddr->parent->address);
7366 update_spool = TRUE;
7367 }
7368 }
7369
7370 /* Except for error messages, ensure that either the errors address for
7371 this deferred address or, if there is none, the sender address, is on the
7372 list of recipients for a warning message. */
7373
7374 if (sender_address[0] != 0)
7375 {
7376 if (addr->p.errors_address == NULL)
7377 {
7378 if (Ustrstr(recipients, sender_address) == NULL)
7379 recipients = string_sprintf("%s%s%s", recipients,
7380 (recipients[0] == 0)? "" : ",", sender_address);
7381 }
7382 else
7383 {
7384 if (Ustrstr(recipients, addr->p.errors_address) == NULL)
7385 recipients = string_sprintf("%s%s%s", recipients,
7386 (recipients[0] == 0)? "" : ",", addr->p.errors_address);
7387 }
7388 }
7389 }
7390
7391 /* Send a warning message if the conditions are right. If the condition check
7392 fails because of a lookup defer, there is nothing we can do. The warning
7393 is not sent. Another attempt will be made at the next delivery attempt (if
7394 it also defers). */
7395
7396 if (!queue_2stage && delivery_attempted &&
6c1c3d1d
WB
7397#ifdef EXPERIMENTAL_DSN
7398 (((addr_defer->dsn_flags & rf_dsnflags) == 0) ||
7399 (addr_defer->dsn_flags & rf_notify_delay) == rf_notify_delay) &&
7400#endif
059ec3d9
PH
7401 delay_warning[1] > 0 && sender_address[0] != 0 &&
7402 (delay_warning_condition == NULL ||
7403 expand_check_condition(delay_warning_condition,
7404 US"delay_warning", US"option")))
7405 {
7406 int count;
7407 int show_time;
7408 int queue_time = time(NULL) - received_time;
7409
7410 /* When running in the test harness, there's an option that allows us to
7411 fudge this time so as to get repeatability of the tests. Take the first
7412 time off the list. In queue runs, the list pointer gets updated in the
7413 calling process. */
7414
7415 if (running_in_test_harness && fudged_queue_times[0] != 0)
7416 {
7417 int qt = readconf_readtime(fudged_queue_times, '/', FALSE);
7418 if (qt >= 0)
7419 {
7420 DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n",
7421 fudged_queue_times);
7422 queue_time = qt;
7423 }
7424 }
7425
7426 /* See how many warnings we should have sent by now */
7427
7428 for (count = 0; count < delay_warning[1]; count++)
7429 if (queue_time < delay_warning[count+2]) break;
7430
7431 show_time = delay_warning[count+1];
7432
7433 if (count >= delay_warning[1])
7434 {
7435 int extra;
7436 int last_gap = show_time;
7437 if (count > 1) last_gap -= delay_warning[count];
7438 extra = (queue_time - delay_warning[count+1])/last_gap;
7439 show_time += last_gap * extra;
7440 count += extra;
7441 }
7442
7443 DEBUG(D_deliver)
7444 {
7445 debug_printf("time on queue = %s\n", readconf_printtime(queue_time));
7446 debug_printf("warning counts: required %d done %d\n", count,
7447 warning_count);
7448 }
7449
7450 /* We have computed the number of warnings there should have been by now.
7451 If there haven't been enough, send one, and up the count to what it should
7452 have been. */
7453
7454 if (warning_count < count)
7455 {
7456 header_line *h;
7457 int fd;
7458 pid_t pid = child_open_exim(&fd);
7459
7460 if (pid > 0)
7461 {
7462 uschar *wmf_text;
7463 FILE *wmf = NULL;
7464 FILE *f = fdopen(fd, "wb");
0f9d3aea
JH
7465#ifdef EXPERIMENTAL_DSN
7466 uschar boundaryStr[64];
7467#endif
059ec3d9 7468
c007c974 7469 if (warn_message_file)
059ec3d9
PH
7470 {
7471 wmf = Ufopen(warn_message_file, "rb");
7472 if (wmf == NULL)
7473 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning "
7474 "message texts: %s", warn_message_file, strerror(errno));
7475 }
7476
7477 warnmsg_recipients = recipients;
7478 warnmsg_delay = (queue_time < 120*60)?
7479 string_sprintf("%d minutes", show_time/60):
7480 string_sprintf("%d hours", show_time/3600);
7481
c007c974 7482 if (errors_reply_to)
059ec3d9 7483 fprintf(f, "Reply-To: %s\n", errors_reply_to);
456682f5 7484 fprintf(f, "Auto-Submitted: auto-replied\n");
0e22dfd1 7485 moan_write_from(f);
059ec3d9
PH
7486 fprintf(f, "To: %s\n", recipients);
7487
6c1c3d1d
WB
7488#ifdef EXPERIMENTAL_DSN
7489 /* generated boundary string and output MIME-Headers */
c007c974
JH
7490 snprintf(boundaryStr, sizeof(boundaryStr)-1,
7491 TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
7492
7493 fprintf(f, "Content-Type: multipart/report;"
7494 " report-type=delivery-status; boundary=%s\n"
7495 "MIME-Version: 1.0\n",
7496 boundaryStr);
6c1c3d1d
WB
7497#endif
7498
c007c974 7499 if ((wmf_text = next_emf(wmf, US"header")))
059ec3d9
PH
7500 fprintf(f, "%s\n", wmf_text);
7501 else
7502 fprintf(f, "Subject: Warning: message %s delayed %s\n\n",
7503 message_id, warnmsg_delay);
7504
6c1c3d1d
WB
7505#ifdef EXPERIMENTAL_DSN
7506 /* output human readable part as text/plain section */
c007c974
JH
7507 fprintf(f, "--%s\n"
7508 "Content-type: text/plain; charset=us-ascii\n\n",
7509 boundaryStr);
6c1c3d1d
WB
7510#endif
7511
c007c974
JH
7512 if ((wmf_text = next_emf(wmf, US"intro")))
7513 fprintf(f, "%s", CS wmf_text);
7514 else
059ec3d9
PH
7515 {
7516 fprintf(f,
7517"This message was created automatically by mail delivery software.\n");
7518
7519 if (Ustrcmp(recipients, sender_address) == 0)
7520 fprintf(f,
7521"A message that you sent has not yet been delivered to one or more of its\n"
7522"recipients after more than ");
7523
c007c974
JH
7524 else
7525 fprintf(f,
059ec3d9
PH
7526"A message sent by\n\n <%s>\n\n"
7527"has not yet been delivered to one or more of its recipients after more than \n",
c007c974 7528 sender_address);
059ec3d9 7529
c007c974
JH
7530 fprintf(f, "%s on the queue on %s.\n\n"
7531 "The message identifier is: %s\n",
7532 warnmsg_delay, primary_hostname, message_id);
059ec3d9
PH
7533
7534 for (h = header_list; h != NULL; h = h->next)
059ec3d9
PH
7535 if (strncmpic(h->text, US"Subject:", 8) == 0)
7536 fprintf(f, "The subject of the message is: %s", h->text + 9);
7537 else if (strncmpic(h->text, US"Date:", 5) == 0)
7538 fprintf(f, "The date of the message is: %s", h->text + 6);
c007c974 7539 fputc('\n', f);
059ec3d9
PH
7540
7541 fprintf(f, "The address%s to which the message has not yet been "
7542 "delivered %s:\n",
c007c974
JH
7543 !addr_defer->next ? "" : "es",
7544 !addr_defer->next ? "is": "are");
059ec3d9
PH
7545 }
7546
447d236c 7547 /* List the addresses, with error information if allowed */
059ec3d9 7548
6c1c3d1d
WB
7549#ifdef EXPERIMENTAL_DSN
7550 /* store addr_defer for machine readable part */
7551 address_item *addr_dsndefer = addr_defer;
7552#endif
c007c974
JH
7553 fputc('\n', f);
7554 while (addr_defer)
059ec3d9
PH
7555 {
7556 address_item *addr = addr_defer;
7557 addr_defer = addr->next;
447d236c
PH
7558 if (print_address_information(addr, f, US" ", US"\n ", US""))
7559 print_address_error(addr, f, US"Delay reason: ");
c007c974 7560 fputc('\n', f);
059ec3d9 7561 }
c007c974 7562 fputc('\n', f);
059ec3d9
PH
7563
7564 /* Final text */
7565
c007c974 7566 if (wmf)
059ec3d9 7567 {
c007c974
JH
7568 if ((wmf_text = next_emf(wmf, US"final")))
7569 fprintf(f, "%s", CS wmf_text);
f1e894f3 7570 (void)fclose(wmf);
059ec3d9
PH
7571 }
7572 else
7573 {
7574 fprintf(f,
7575"No action is required on your part. Delivery attempts will continue for\n"
7576"some time, and this warning may be repeated at intervals if the message\n"
7577"remains undelivered. Eventually the mail delivery software will give up,\n"
7578"and when that happens, the message will be returned to you.\n");
7579 }
7580
6c1c3d1d
WB
7581#ifdef EXPERIMENTAL_DSN
7582 /* output machine readable part */
c007c974
JH
7583 fprintf(f, "\n--%s\n"
7584 "Content-type: message/delivery-status\n\n"
7585 "Reporting-MTA: dns; %s\n",
7586 boundaryStr,
7587 smtp_active_hostname);
6c1c3d1d 7588
c007c974
JH
7589
7590 if (dsn_envid)
7591 {
6c1c3d1d
WB
7592 /* must be decoded from xtext: see RFC 3461:6.3a */
7593 uschar *xdec_envid;
7594 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
7595 fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid);
7596 else
7597 fprintf(f,"X-Original-Envelope-ID: error decoding xtext formated ENVID\n");
7598 }
c007c974 7599 fputc('\n', f);
6c1c3d1d 7600
c007c974 7601 while (addr_dsndefer)
6c1c3d1d 7602 {
c007c974 7603 if (addr_dsndefer->dsn_orcpt)
6c1c3d1d 7604 fprintf(f,"Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt);
c007c974 7605
6c1c3d1d
WB
7606 fprintf(f,"Action: delayed\n");
7607 fprintf(f,"Final-Recipient: rfc822;%s\n", addr_dsndefer->address);
7608 fprintf(f,"Status: 4.0.0\n");
c007c974 7609 if (addr_dsndefer->host_used && addr_dsndefer->host_used->name)
6c1c3d1d 7610 fprintf(f,"Remote-MTA: dns; %s\nDiagnostic-Code: smtp; %d\n",
c007c974 7611 addr_dsndefer->host_used->name, addr_dsndefer->basic_errno);
6c1c3d1d
WB
7612 addr_dsndefer = addr_dsndefer->next;
7613 }
7614
c007c974
JH
7615 fprintf(f, "\n--%s\n"
7616 "Content-type: text/rfc822-headers\n\n",
7617 boundaryStr);
6c1c3d1d
WB
7618
7619 fflush(f);
7620 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
7621 int topt = topt_add_return_path | topt_no_body;
7622 transport_filter_argv = NULL; /* Just in case */
7623 return_path = sender_address; /* In case not previously set */
7624 /* Write the original email out */
7625 transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0);
7626 fflush(f);
7627
c007c974 7628 fprintf(f,"\n--%s--\n", boundaryStr);
6c1c3d1d
WB
7629
7630 fflush(f);
c007c974 7631#endif /*EXPERIMENTAL_DSN*/
6c1c3d1d 7632
059ec3d9
PH
7633 /* Close and wait for child process to complete, without a timeout.
7634 If there's an error, don't update the count. */
7635
f1e894f3 7636 (void)fclose(f);
059ec3d9
PH
7637 if (child_close(pid, 0) == 0)
7638 {
7639 warning_count = count;
7640 update_spool = TRUE; /* Ensure spool rewritten */
7641 }
7642 }
7643 }
7644 }
7645
7646 /* Clear deliver_domain */
7647
7648 deliver_domain = NULL;
7649
7650 /* If this was a first delivery attempt, unset the first time flag, and
7651 ensure that the spool gets updated. */
7652
7653 if (deliver_firsttime)
7654 {
7655 deliver_firsttime = FALSE;
7656 update_spool = TRUE;
7657 }
7658
7659 /* If delivery was frozen and freeze_tell is set, generate an appropriate
7660 message, unless the message is a local error message (to avoid loops). Then
7661 log the freezing. If the text in "frozen_info" came from a system filter,
7662 it has been escaped into printing characters so as not to mess up log lines.
7663 For the "tell" message, we turn \n back into newline. Also, insert a newline
7664 near the start instead of the ": " string. */
7665
7666 if (deliver_freeze)
7667 {
7668 if (freeze_tell != NULL && freeze_tell[0] != 0 && !local_error_message)
7669 {
7670 uschar *s = string_copy(frozen_info);
7671 uschar *ss = Ustrstr(s, " by the system filter: ");
7672
7673 if (ss != NULL)
7674 {
7675 ss[21] = '.';
7676 ss[22] = '\n';
7677 }
7678
7679 ss = s;
7680 while (*ss != 0)
7681 {
7682 if (*ss == '\\' && ss[1] == 'n')
7683 {
7684 *ss++ = ' ';
7685 *ss++ = '\n';
7686 }
7687 else ss++;
7688 }
7689 moan_tell_someone(freeze_tell, addr_defer, US"Message frozen",
7690 "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id,
7691 s, sender_address);
7692 }
7693
7694 /* Log freezing just before we update the -H file, to minimize the chance
7695 of a race problem. */
7696
7697 deliver_msglog("*** Frozen%s\n", frozen_info);
7698 log_write(0, LOG_MAIN, "Frozen%s", frozen_info);
7699 }
7700
7701 /* If there have been any updates to the non-recipients list, or other things
7702 that get written to the spool, we must now update the spool header file so
7703 that it has the right information for the next delivery attempt. If there
7704 was more than one address being delivered, the header_change update is done
7705 earlier, in case one succeeds and then something crashes. */
7706
7707 DEBUG(D_deliver)
7708 debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n",
7709 update_spool, header_rewritten);
7710
7711 if (update_spool || header_rewritten)
7712 /* Panic-dies on error */
7713 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7714 }
7715
7716/* Finished with the message log. If the message is complete, it will have
7717been unlinked or renamed above. */
7718
f1e894f3 7719if (message_logs) (void)fclose(message_log);
059ec3d9
PH
7720
7721/* Now we can close and remove the journal file. Its only purpose is to record
7722successfully completed deliveries asap so that this information doesn't get
7723lost if Exim (or the machine) crashes. Forgetting about a failed delivery is
7724not serious, as trying it again is not harmful. The journal might not be open
7725if all addresses were deferred at routing or directing. Nevertheless, we must
7726remove it if it exists (may have been lying around from a crash during the
7727previous delivery attempt). We don't remove the journal if a delivery
7728subprocess failed to pass back delivery information; this is controlled by
7729the remove_journal flag. When the journal is left, we also don't move the
7730message off the main spool if frozen and the option is set. It should get moved
7731at the next attempt, after the journal has been inspected. */
7732
f1e894f3 7733if (journal_fd >= 0) (void)close(journal_fd);
059ec3d9
PH
7734
7735if (remove_journal)
7736 {
7737 sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
7738 if (Uunlink(spoolname) < 0 && errno != ENOENT)
7739 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", spoolname,
7740 strerror(errno));
7741
7742 /* Move the message off the spool if reqested */
7743
a7538db1 7744#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
059ec3d9
PH
7745 if (deliver_freeze && move_frozen_messages)
7746 (void)spool_move_message(id, message_subdir, US"", US"F");
a7538db1 7747#endif
059ec3d9
PH
7748 }
7749
7750/* Closing the data file frees the lock; if the file has been unlinked it
7751will go away. Otherwise the message becomes available for another process
7752to try delivery. */
7753
f1e894f3 7754(void)close(deliver_datafile);
059ec3d9
PH
7755deliver_datafile = -1;
7756DEBUG(D_deliver) debug_printf("end delivery of %s\n", id);
7757
7758/* It is unlikely that there will be any cached resources, since they are
7759released after routing, and in the delivery subprocesses. However, it's
7760possible for an expansion for something afterwards (for example,
7761expand_check_condition) to do a lookup. We must therefore be sure everything is
7762released. */
7763
7764search_tidyup();
faa05a93 7765acl_where = ACL_WHERE_UNKNOWN;
059ec3d9
PH
7766return final_yield;
7767}
7768
67d81c10
JH
7769/* vi: aw ai sw=2
7770*/
059ec3d9 7771/* End of deliver.c */