1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2016 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* The main code for delivering a message. */
15 /* Data block for keeping track of subprocesses for parallel remote
18 typedef struct pardata {
19 address_item *addrlist; /* chain of addresses */
20 address_item *addr; /* next address data expected for */
21 pid_t pid; /* subprocess pid */
22 int fd; /* pipe fd for getting result from subprocess */
23 int transport_count; /* returned transport count value */
24 BOOL done; /* no more data needed */
25 uschar *msg; /* error message */
26 uschar *return_path; /* return_path for these addresses */
29 /* Values for the process_recipients variable */
31 enum { RECIP_ACCEPT, RECIP_IGNORE, RECIP_DEFER,
32 RECIP_FAIL, RECIP_FAIL_FILTER, RECIP_FAIL_TIMEOUT,
35 /* Mutually recursive functions for marking addresses done. */
37 static void child_done(address_item *, uschar *);
38 static void address_done(address_item *, uschar *);
40 /* Table for turning base-62 numbers into binary */
42 static uschar tab62[] =
43 {0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, /* 0-9 */
44 0,10,11,12,13,14,15,16,17,18,19,20, /* A-K */
45 21,22,23,24,25,26,27,28,29,30,31,32, /* L-W */
46 33,34,35, 0, 0, 0, 0, 0, /* X-Z */
47 0,36,37,38,39,40,41,42,43,44,45,46, /* a-k */
48 47,48,49,50,51,52,53,54,55,56,57,58, /* l-w */
52 /*************************************************
53 * Local static variables *
54 *************************************************/
56 /* addr_duplicate is global because it needs to be seen from the Envelope-To
59 static address_item *addr_defer = NULL;
60 static address_item *addr_failed = NULL;
61 static address_item *addr_fallback = NULL;
62 static address_item *addr_local = NULL;
63 static address_item *addr_new = NULL;
64 static address_item *addr_remote = NULL;
65 static address_item *addr_route = NULL;
66 static address_item *addr_succeed = NULL;
67 static address_item *addr_dsntmp = NULL;
68 static address_item *addr_senddsn = NULL;
70 static FILE *message_log = NULL;
71 static BOOL update_spool;
72 static BOOL remove_journal;
73 static int parcount = 0;
74 static pardata *parlist = NULL;
75 static int return_count;
76 static uschar *frozen_info = US"";
77 static uschar *used_return_path = NULL;
81 /*************************************************
82 * Make a new address item *
83 *************************************************/
85 /* This function gets the store and initializes with default values. The
86 transport_return value defaults to DEFER, so that any unexpected failure to
87 deliver does not wipe out the message. The default unique string is set to a
88 copy of the address, so that its domain can be lowercased.
91 address the RFC822 address string
92 copy force a copy of the address
94 Returns: a pointer to an initialized address_item
98 deliver_make_addr(uschar *address, BOOL copy)
100 address_item *addr = store_get(sizeof(address_item));
101 *addr = address_defaults;
102 if (copy) address = string_copy(address);
103 addr->address = address;
104 addr->unique = string_copy(address);
111 /*************************************************
112 * Set expansion values for an address *
113 *************************************************/
115 /* Certain expansion variables are valid only when handling an address or
116 address list. This function sets them up or clears the values, according to its
120 addr the address in question, or NULL to clear values
125 deliver_set_expansions(address_item *addr)
129 const uschar ***p = address_expansions;
130 while (*p) **p++ = NULL;
134 /* Exactly what gets set depends on whether there is one or more addresses, and
135 what they contain. These first ones are always set, taking their values from
136 the first address. */
138 if (!addr->host_list)
140 deliver_host = deliver_host_address = US"";
141 deliver_host_port = 0;
145 deliver_host = addr->host_list->name;
146 deliver_host_address = addr->host_list->address;
147 deliver_host_port = addr->host_list->port;
150 deliver_recipients = addr;
151 deliver_address_data = addr->prop.address_data;
152 deliver_domain_data = addr->prop.domain_data;
153 deliver_localpart_data = addr->prop.localpart_data;
155 /* These may be unset for multiple addresses */
157 deliver_domain = addr->domain;
158 self_hostname = addr->self_hostname;
160 #ifdef EXPERIMENTAL_BRIGHTMAIL
161 bmi_deliver = 1; /* deliver by default */
162 bmi_alt_location = NULL;
163 bmi_base64_verdict = NULL;
164 bmi_base64_tracker_verdict = NULL;
167 /* If there's only one address we can set everything. */
171 address_item *addr_orig;
173 deliver_localpart = addr->local_part;
174 deliver_localpart_prefix = addr->prefix;
175 deliver_localpart_suffix = addr->suffix;
177 for (addr_orig = addr; addr_orig->parent; addr_orig = addr_orig->parent) ;
178 deliver_domain_orig = addr_orig->domain;
180 /* Re-instate any prefix and suffix in the original local part. In all
181 normal cases, the address will have a router associated with it, and we can
182 choose the caseful or caseless version accordingly. However, when a system
183 filter sets up a pipe, file, or autoreply delivery, no router is involved.
184 In this case, though, there won't be any prefix or suffix to worry about. */
186 deliver_localpart_orig = !addr_orig->router
187 ? addr_orig->local_part
188 : addr_orig->router->caseful_local_part
189 ? addr_orig->cc_local_part
190 : addr_orig->lc_local_part;
192 /* If there's a parent, make its domain and local part available, and if
193 delivering to a pipe or file, or sending an autoreply, get the local
194 part from the parent. For pipes and files, put the pipe or file string
195 into address_pipe and address_file. */
199 deliver_domain_parent = addr->parent->domain;
200 deliver_localpart_parent = !addr->parent->router
201 ? addr->parent->local_part
202 : addr->parent->router->caseful_local_part
203 ? addr->parent->cc_local_part
204 : addr->parent->lc_local_part;
206 /* File deliveries have their own flag because they need to be picked out
207 as special more often. */
209 if (testflag(addr, af_pfr))
211 if (testflag(addr, af_file)) address_file = addr->local_part;
212 else if (deliver_localpart[0] == '|') address_pipe = addr->local_part;
213 deliver_localpart = addr->parent->local_part;
214 deliver_localpart_prefix = addr->parent->prefix;
215 deliver_localpart_suffix = addr->parent->suffix;
219 #ifdef EXPERIMENTAL_BRIGHTMAIL
220 /* Set expansion variables related to Brightmail AntiSpam */
221 bmi_base64_verdict = bmi_get_base64_verdict(deliver_localpart_orig, deliver_domain_orig);
222 bmi_base64_tracker_verdict = bmi_get_base64_tracker_verdict(bmi_base64_verdict);
223 /* get message delivery status (0 - don't deliver | 1 - deliver) */
224 bmi_deliver = bmi_get_delivery_status(bmi_base64_verdict);
225 /* if message is to be delivered, get eventual alternate location */
226 if (bmi_deliver == 1)
227 bmi_alt_location = bmi_get_alt_location(bmi_base64_verdict);
232 /* For multiple addresses, don't set local part, and leave the domain and
233 self_hostname set only if it is the same for all of them. It is possible to
234 have multiple pipe and file addresses, but only when all addresses have routed
235 to the same pipe or file. */
240 if (testflag(addr, af_pfr))
242 if (testflag(addr, af_file)) address_file = addr->local_part;
243 else if (addr->local_part[0] == '|') address_pipe = addr->local_part;
245 for (addr2 = addr->next; addr2; addr2 = addr2->next)
247 if (deliver_domain && Ustrcmp(deliver_domain, addr2->domain) != 0)
248 deliver_domain = NULL;
250 && ( !addr2->self_hostname
251 || Ustrcmp(self_hostname, addr2->self_hostname) != 0
253 self_hostname = NULL;
254 if (!deliver_domain && !self_hostname) break;
262 /*************************************************
263 * Open a msglog file *
264 *************************************************/
266 /* This function is used both for normal message logs, and for files in the
267 msglog directory that are used to catch output from pipes. Try to create the
268 directory if it does not exist. From release 4.21, normal message logs should
269 be created when the message is received.
272 filename the file name
273 mode the mode required
274 error used for saying what failed
276 Returns: a file descriptor, or -1 (with errno set)
280 open_msglog_file(uschar *filename, int mode, uschar **error)
282 int fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode);
284 if (fd < 0 && errno == ENOENT)
286 (void)directory_make(spool_directory,
287 spool_sname(US"msglog", message_subdir),
288 MSGLOG_DIRECTORY_MODE, TRUE);
289 fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode);
292 /* Set the close-on-exec flag and change the owner to the exim uid/gid (this
293 function is called as root). Double check the mode, because the group setting
294 doesn't always get set automatically. */
298 (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
299 if (fchown(fd, exim_uid, exim_gid) < 0)
304 if (fchmod(fd, mode) < 0)
310 else *error = US"create";
318 /*************************************************
319 * Write to msglog if required *
320 *************************************************/
322 /* Write to the message log, if configured. This function may also be called
326 format a string format
332 deliver_msglog(const char *format, ...)
335 if (!message_logs) return;
336 va_start(ap, format);
337 vfprintf(message_log, format, ap);
345 /*************************************************
346 * Replicate status for batch *
347 *************************************************/
349 /* When a transport handles a batch of addresses, it may treat them
350 individually, or it may just put the status in the first one, and return FALSE,
351 requesting that the status be copied to all the others externally. This is the
352 replication function. As well as the status, it copies the transport pointer,
353 which may have changed if appendfile passed the addresses on to a different
356 Argument: pointer to the first address in a chain
361 replicate_status(address_item *addr)
364 for (addr2 = addr->next; addr2; addr2 = addr2->next)
366 addr2->transport = addr->transport;
367 addr2->transport_return = addr->transport_return;
368 addr2->basic_errno = addr->basic_errno;
369 addr2->more_errno = addr->more_errno;
370 addr2->special_action = addr->special_action;
371 addr2->message = addr->message;
372 addr2->user_message = addr->user_message;
378 /*************************************************
379 * Compare lists of hosts *
380 *************************************************/
382 /* This function is given two pointers to chains of host items, and it yields
383 TRUE if the lists refer to the same hosts in the same order, except that
385 (1) Multiple hosts with the same non-negative MX values are permitted to appear
386 in different orders. Round-robinning nameservers can cause this to happen.
388 (2) Multiple hosts with the same negative MX values less than MX_NONE are also
389 permitted to appear in different orders. This is caused by randomizing
392 This enables Exim to use a single SMTP transaction for sending to two entirely
393 different domains that happen to end up pointing at the same hosts.
396 one points to the first host list
397 two points to the second host list
399 Returns: TRUE if the lists refer to the same host set
403 same_hosts(host_item *one, host_item *two)
407 if (Ustrcmp(one->name, two->name) != 0)
410 host_item *end_one = one;
411 host_item *end_two = two;
413 /* Batch up only if there was no MX and the list was not randomized */
415 if (mx == MX_NONE) return FALSE;
417 /* Find the ends of the shortest sequence of identical MX values */
419 while ( end_one->next && end_one->next->mx == mx
420 && end_two->next && end_two->next->mx == mx)
422 end_one = end_one->next;
423 end_two = end_two->next;
426 /* If there aren't any duplicates, there's no match. */
428 if (end_one == one) return FALSE;
430 /* For each host in the 'one' sequence, check that it appears in the 'two'
431 sequence, returning FALSE if not. */
436 for (hi = two; hi != end_two->next; hi = hi->next)
437 if (Ustrcmp(one->name, hi->name) == 0) break;
438 if (hi == end_two->next) return FALSE;
439 if (one == end_one) break;
443 /* All the hosts in the 'one' sequence were found in the 'two' sequence.
444 Ensure both are pointing at the last host, and carry on as for equality. */
449 /* if the names matched but ports do not, mismatch */
450 else if (one->port != two->port)
459 /* True if both are NULL */
466 /*************************************************
467 * Compare header lines *
468 *************************************************/
470 /* This function is given two pointers to chains of header items, and it yields
471 TRUE if they are the same header texts in the same order.
474 one points to the first header list
475 two points to the second header list
477 Returns: TRUE if the lists refer to the same header set
481 same_headers(header_line *one, header_line *two)
483 for (;; one = one->next, two = two->next)
485 if (one == two) return TRUE; /* Includes the case where both NULL */
486 if (!one || !two) return FALSE;
487 if (Ustrcmp(one->text, two->text) != 0) return FALSE;
493 /*************************************************
494 * Compare string settings *
495 *************************************************/
497 /* This function is given two pointers to strings, and it returns
498 TRUE if they are the same pointer, or if the two strings are the same.
501 one points to the first string
502 two points to the second string
504 Returns: TRUE or FALSE
508 same_strings(uschar *one, uschar *two)
510 if (one == two) return TRUE; /* Includes the case where both NULL */
511 if (!one || !two) return FALSE;
512 return (Ustrcmp(one, two) == 0);
517 /*************************************************
518 * Compare uid/gid for addresses *
519 *************************************************/
521 /* This function is given a transport and two addresses. It yields TRUE if the
522 uid/gid/initgroups settings for the two addresses are going to be the same when
527 addr1 the first address
528 addr2 the second address
530 Returns: TRUE or FALSE
534 same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2)
536 if ( !tp->uid_set && !tp->expand_uid
537 && !tp->deliver_as_creator
538 && ( 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)
545 if ( !tp->gid_set && !tp->expand_gid
546 && ( testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set)
547 || ( testflag(addr1, af_gid_set)
548 && addr1->gid != addr2->gid
558 /*************************************************
559 * Record that an address is complete *
560 *************************************************/
562 /* This function records that an address is complete. This is straightforward
563 for most addresses, where the unique address is just the full address with the
564 domain lower cased. For homonyms (addresses that are the same as one of their
565 ancestors) their are complications. Their unique addresses have \x\ prepended
566 (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and
569 Exim used to record the unique addresses of homonyms as "complete". This,
570 however, fails when the pattern of redirection varies over time (e.g. if taking
571 unseen copies at only some times of day) because the prepended numbers may vary
572 from one delivery run to the next. This problem is solved by never recording
573 prepended unique addresses as complete. Instead, when a homonymic address has
574 actually been delivered via a transport, we record its basic unique address
575 followed by the name of the transport. This is checked in subsequent delivery
576 runs whenever an address is routed to a transport.
578 If the completed address is a top-level one (has no parent, which means it
579 cannot be homonymic) we also add the original address to the non-recipients
580 tree, 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
582 address in the case of the domain.
584 Finally, this function scans the list of duplicates, marks as done any that
585 match this address, and calls child_done() for their ancestors.
588 addr address item that has been completed
589 now current time as a string
595 address_done(address_item *addr, uschar *now)
599 update_spool = TRUE; /* Ensure spool gets updated */
601 /* Top-level address */
605 tree_add_nonrecipient(addr->unique);
606 tree_add_nonrecipient(addr->address);
609 /* Homonymous child address */
611 else if (testflag(addr, af_homonym))
614 tree_add_nonrecipient(
615 string_sprintf("%s/%s", addr->unique + 3, addr->transport->name));
618 /* Non-homonymous child address */
620 else tree_add_nonrecipient(addr->unique);
622 /* Check the list of duplicate addresses and ensure they are now marked
625 for (dup = addr_duplicate; dup; dup = dup->next)
626 if (Ustrcmp(addr->unique, dup->unique) == 0)
628 tree_add_nonrecipient(dup->unique);
629 child_done(dup, now);
636 /*************************************************
637 * Decrease counts in parents and mark done *
638 *************************************************/
640 /* This function is called when an address is complete. If there is a parent
641 address, its count of children is decremented. If there are still other
642 children outstanding, the function exits. Otherwise, if the count has become
643 zero, address_done() is called to mark the parent and its duplicates complete.
644 Then loop for any earlier ancestors.
647 addr points to the completed address item
648 now the current time as a string, for writing to the message log
654 child_done(address_item *addr, uschar *now)
660 if ((addr->child_count -= 1) > 0) return; /* Incomplete parent */
661 address_done(addr, now);
663 /* Log the completion of all descendents only when there is no ancestor with
664 the same original address. */
666 for (aa = addr->parent; aa; aa = aa->parent)
667 if (Ustrcmp(aa->address, addr->address) == 0) break;
670 deliver_msglog("%s %s: children all complete\n", now, addr->address);
671 DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address);
677 /*************************************************
678 * Delivery logging support functions *
679 *************************************************/
681 /* The LOGGING() checks in d_log_interface() are complicated for backwards
682 compatibility. When outgoing interface logging was originally added, it was
683 conditional on just incoming_interface (which is off by default). The
684 outgoing_interface option is on by default to preserve this behaviour, but
685 you can enable incoming_interface and disable outgoing_interface to get I=
686 fields on incoming lines only.
689 s The log line buffer
690 sizep Pointer to the buffer size
691 ptrp Pointer to current index into buffer
692 addr The address to be logged
694 Returns: New value for s
698 d_log_interface(uschar *s, int *sizep, int *ptrp)
700 if (LOGGING(incoming_interface) && LOGGING(outgoing_interface)
701 && sending_ip_address)
703 s = string_append(s, sizep, ptrp, 2, US" I=[", sending_ip_address);
704 s = LOGGING(outgoing_port)
705 ? string_append(s, sizep, ptrp, 2, US"]:",
706 string_sprintf("%d", sending_port))
707 : string_catn(s, sizep, ptrp, US"]", 1);
715 d_hostlog(uschar * s, int * sp, int * pp, address_item * addr)
717 host_item * h = addr->host_used;
719 s = string_append(s, sp, pp, 2, US" H=", h->name);
721 if (LOGGING(dnssec) && h->dnssec == DS_YES)
722 s = string_catn(s, sp, pp, US" DS", 3);
724 s = string_append(s, sp, pp, 3, US" [", h->address, US"]");
726 if (LOGGING(outgoing_port))
727 s = string_append(s, sp, pp, 2, US":", string_sprintf("%d", h->port));
730 if (LOGGING(proxy) && proxy_local_address)
732 s = string_append(s, sp, pp, 3, US" PRX=[", proxy_local_address, US"]");
733 if (LOGGING(outgoing_port))
734 s = string_append(s, sp, pp, 2, US":", string_sprintf("%d",
739 return d_log_interface(s, sp, pp);
748 d_tlslog(uschar * s, int * sizep, int * ptrp, address_item * addr)
750 if (LOGGING(tls_cipher) && addr->cipher)
751 s = string_append(s, sizep, ptrp, 2, US" X=", addr->cipher);
752 if (LOGGING(tls_certificate_verified) && addr->cipher)
753 s = string_append(s, sizep, ptrp, 2, US" CV=",
754 testflag(addr, af_cert_verified)
756 #ifdef EXPERIMENTAL_DANE
757 testflag(addr, af_dane_verified)
763 if (LOGGING(tls_peerdn) && addr->peerdn)
764 s = string_append(s, sizep, ptrp, 3, US" DN=\"",
765 string_printing(addr->peerdn), US"\"");
773 #ifndef DISABLE_EVENT
775 event_raise(uschar * action, const uschar * event, uschar * ev_data)
781 debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n",
783 action, deliver_host_address);
786 event_data = ev_data;
788 if (!(s = expand_string(action)) && *expand_string_message)
789 log_write(0, LOG_MAIN|LOG_PANIC,
790 "failed to expand event_action %s in %s: %s\n",
791 event, transport_name, expand_string_message);
793 event_name = event_data = NULL;
795 /* If the expansion returns anything but an empty string, flag for
796 the caller to modify his normal processing
801 debug_printf("Event(%s): event_action returned \"%s\"\n", event, s);
809 msg_event_raise(const uschar * event, const address_item * addr)
811 const uschar * save_domain = deliver_domain;
812 uschar * save_local = deliver_localpart;
813 const uschar * save_host = deliver_host;
814 const uschar * save_address = deliver_host_address;
815 const int save_port = deliver_host_port;
817 if (!addr->transport)
820 router_name = addr->router ? addr->router->name : NULL;
821 transport_name = addr->transport->name;
822 deliver_domain = addr->domain;
823 deliver_localpart = addr->local_part;
824 deliver_host = addr->host_used ? addr->host_used->name : NULL;
826 (void) event_raise(addr->transport->event_action, event,
828 || Ustrcmp(addr->transport->driver_name, "smtp") == 0
829 || Ustrcmp(addr->transport->driver_name, "lmtp") == 0
830 ? addr->message : NULL);
832 deliver_host_port = save_port;
833 deliver_host_address = save_address;
834 deliver_host = save_host;
835 deliver_localpart = save_local;
836 deliver_domain = save_domain;
837 router_name = transport_name = NULL;
839 #endif /*DISABLE_EVENT*/
843 /******************************************************************************/
846 /*************************************************
847 * Generate local prt for logging *
848 *************************************************/
850 /* This function is a subroutine for use in string_log_address() below.
853 addr the address being logged
854 yield the current dynamic buffer pointer
855 sizeptr points to current size
856 ptrptr points to current insert pointer
858 Returns: the new value of the buffer pointer
862 string_get_localpart(address_item *addr, uschar *yield, int *sizeptr,
868 if (testflag(addr, af_include_affixes) && s)
871 if (testflag(addr, af_utf8_downcvt))
872 s = string_localpart_utf8_to_alabel(s, NULL);
874 yield = string_cat(yield, sizeptr, ptrptr, s);
877 s = addr->local_part;
879 if (testflag(addr, af_utf8_downcvt))
880 s = string_localpart_utf8_to_alabel(s, NULL);
882 yield = string_cat(yield, sizeptr, ptrptr, s);
885 if (testflag(addr, af_include_affixes) && s)
888 if (testflag(addr, af_utf8_downcvt))
889 s = string_localpart_utf8_to_alabel(s, NULL);
891 yield = string_cat(yield, sizeptr, ptrptr, s);
898 /*************************************************
899 * Generate log address list *
900 *************************************************/
902 /* This function generates a list consisting of an address and its parents, for
903 use in logging lines. For saved onetime aliased addresses, the onetime parent
904 field is used. If the address was delivered by a transport with rcpt_include_
905 affixes set, the af_include_affixes bit will be set in the address. In that
906 case, we include the affixes here too.
909 str points to start of growing string, or NULL
910 size points to current allocation for string
911 ptr points to offset for append point; updated on exit
912 addr bottom (ultimate) address
913 all_parents if TRUE, include all parents
914 success TRUE for successful delivery
916 Returns: a growable string in dynamic store
920 string_log_address(uschar * str, int * size, int * ptr,
921 address_item *addr, BOOL all_parents, BOOL success)
923 BOOL add_topaddr = TRUE;
924 address_item *topaddr;
926 /* Find the ultimate parent */
928 for (topaddr = addr; topaddr->parent; topaddr = topaddr->parent) ;
930 /* We start with just the local part for pipe, file, and reply deliveries, and
931 for successful local deliveries from routers that have the log_as_local flag
932 set. File deliveries from filters can be specified as non-absolute paths in
933 cases where the transport is goin to complete the path. If there is an error
934 before this happens (expansion failure) the local part will not be updated, and
935 so won't necessarily look like a path. Add extra text for this case. */
937 if ( testflag(addr, af_pfr)
939 && addr->router && addr->router->log_as_local
940 && addr->transport && addr->transport->info->local
943 if (testflag(addr, af_file) && addr->local_part[0] != '/')
944 str = string_catn(str, size, ptr, CUS"save ", 5);
945 str = string_get_localpart(addr, str, size, ptr);
948 /* Other deliveries start with the full address. It we have split it into local
949 part and domain, use those fields. Some early failures can happen before the
950 splitting is done; in those cases use the original field. */
954 uschar * cmp = str + *ptr;
956 if (addr->local_part)
959 str = string_get_localpart(addr, str, size, ptr);
960 str = string_catn(str, size, ptr, US"@", 1);
963 if (testflag(addr, af_utf8_downcvt))
964 s = string_localpart_utf8_to_alabel(s, NULL);
966 str = string_cat(str, size, ptr, s);
969 str = string_cat(str, size, ptr, addr->address);
971 /* If the address we are going to print is the same as the top address,
972 and all parents are not being included, don't add on the top address. First
973 of all, do a caseless comparison; if this succeeds, do a caseful comparison
974 on the local parts. */
977 if ( strcmpic(cmp, topaddr->address) == 0
978 && Ustrncmp(cmp, topaddr->address, Ustrchr(cmp, '@') - cmp) == 0
979 && !addr->onetime_parent
980 && (!all_parents || !addr->parent || addr->parent == topaddr)
985 /* If all parents are requested, or this is a local pipe/file/reply, and
986 there is at least one intermediate parent, show it in brackets, and continue
987 with all of them if all are wanted. */
989 if ( (all_parents || testflag(addr, af_pfr))
991 && addr->parent != topaddr)
995 for (addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent)
997 str = string_catn(str, size, ptr, s, 2);
998 str = string_cat (str, size, ptr, addr2->address);
999 if (!all_parents) break;
1002 str = string_catn(str, size, ptr, US")", 1);
1005 /* Add the top address if it is required */
1008 str = string_append(str, size, ptr, 3,
1010 addr->onetime_parent ? addr->onetime_parent : topaddr->address,
1017 /******************************************************************************/
1021 /* If msg is NULL this is a delivery log and logchar is used. Otherwise
1022 this is a nonstandard call; no two-character delivery flag is written
1023 but sender-host and sender are prefixed and "msg" is inserted in the log line.
1026 flags passed to log_write()
1029 delivery_log(int flags, address_item * addr, int logchar, uschar * msg)
1031 int size = 256; /* Used for a temporary, */
1032 int ptr = 0; /* expanding buffer, for */
1033 uschar * s; /* building log lines; */
1034 void * reset_point; /* released afterwards. */
1036 /* Log the delivery on the main log. We use an extensible string to build up
1037 the log line, and reset the store afterwards. Remote deliveries should always
1038 have a pointer to the host item that succeeded; local deliveries can have a
1039 pointer to a single host item in their host list, for use by the transport. */
1041 #ifndef DISABLE_EVENT
1042 /* presume no successful remote delivery */
1043 lookup_dnssec_authenticated = NULL;
1046 s = reset_point = store_get(size);
1049 s = string_append(s, &size, &ptr, 2, host_and_ident(TRUE), US" ");
1053 s = string_catn(s, &size, &ptr, US"> ", 2);
1055 s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), TRUE);
1057 if (LOGGING(sender_on_delivery) || msg)
1058 s = string_append(s, &size, &ptr, 3, US" F=<",
1060 testflag(addr, af_utf8_downcvt)
1061 ? string_address_utf8_to_alabel(sender_address, NULL)
1068 s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
1070 #ifdef EXPERIMENTAL_SRS
1071 if(addr->prop.srs_sender)
1072 s = string_append(s, &size, &ptr, 3, US" SRS=<", addr->prop.srs_sender, US">");
1075 /* You might think that the return path must always be set for a successful
1076 delivery; indeed, I did for some time, until this statement crashed. The case
1077 when it is not set is for a delivery to /dev/null which is optimised by not
1078 being run at all. */
1080 if (used_return_path && LOGGING(return_path_on_delivery))
1081 s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
1084 s = string_append(s, &size, &ptr, 2, US" ", msg);
1086 /* For a delivery from a system filter, there may not be a router */
1088 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
1090 s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
1092 if (LOGGING(delivery_size))
1093 s = string_append(s, &size, &ptr, 2, US" S=",
1094 string_sprintf("%d", transport_count));
1096 /* Local delivery */
1098 if (addr->transport->info->local)
1100 if (addr->host_list)
1101 s = string_append(s, &size, &ptr, 2, US" H=", addr->host_list->name);
1102 s = d_log_interface(s, &size, &ptr);
1103 if (addr->shadow_message)
1104 s = string_cat(s, &size, &ptr, addr->shadow_message);
1107 /* Remote delivery */
1111 if (addr->host_used)
1113 s = d_hostlog(s, &size, &ptr, addr);
1114 if (continue_sequence > 1)
1115 s = string_catn(s, &size, &ptr, US"*", 1);
1117 #ifndef DISABLE_EVENT
1118 deliver_host_address = addr->host_used->address;
1119 deliver_host_port = addr->host_used->port;
1120 deliver_host = addr->host_used->name;
1122 /* DNS lookup status */
1123 lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes"
1124 : addr->host_used->dnssec==DS_NO ? US"no"
1130 s = d_tlslog(s, &size, &ptr, addr);
1133 if (addr->authenticator)
1135 s = string_append(s, &size, &ptr, 2, US" A=", addr->authenticator);
1138 s = string_append(s, &size, &ptr, 2, US":", addr->auth_id);
1139 if (LOGGING(smtp_mailauth) && addr->auth_sndr)
1140 s = string_append(s, &size, &ptr, 2, US":", addr->auth_sndr);
1144 #ifndef DISABLE_PRDR
1145 if (addr->flags & af_prdr_used)
1146 s = string_catn(s, &size, &ptr, US" PRDR", 5);
1149 if (addr->flags & af_chunking_used)
1150 s = string_catn(s, &size, &ptr, US" K", 2);
1153 /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */
1155 if ( LOGGING(smtp_confirmation)
1157 && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0)
1161 unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024;
1162 uschar *p = big_buffer;
1163 uschar *ss = addr->message;
1165 for (i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */
1167 if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */
1172 s = string_append(s, &size, &ptr, 2, US" C=", big_buffer);
1175 /* Time on queue and actual time taken to deliver */
1177 if (LOGGING(queue_time))
1178 s = string_append(s, &size, &ptr, 2, US" QT=",
1179 readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
1181 if (LOGGING(deliver_time))
1182 s = string_append(s, &size, &ptr, 2, US" DT=",
1183 readconf_printtime(addr->more_errno));
1185 /* string_cat() always leaves room for the terminator. Release the
1186 store we used to build the line after writing it. */
1189 log_write(0, flags, "%s", s);
1191 #ifndef DISABLE_EVENT
1192 if (!msg) msg_event_raise(US"msg:delivery", addr);
1195 store_reset(reset_point);
1202 deferral_log(address_item * addr, uschar * now,
1203 int logflags, uschar * driver_name, uschar * driver_kind)
1205 int size = 256; /* Used for a temporary, */
1206 int ptr = 0; /* expanding buffer, for */
1207 uschar * s; /* building log lines; */
1208 void * reset_point; /* released afterwards. */
1212 /* Build up the line that is used for both the message log and the main
1215 s = reset_point = store_get(size);
1217 /* Create the address string for logging. Must not do this earlier, because
1218 an OK result may be changed to FAIL when a pipe returns text. */
1220 s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), FALSE);
1223 s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
1225 /* Either driver_name contains something and driver_kind contains
1226 " router" or " transport" (note the leading space), or driver_name is
1227 a null string and driver_kind contains "routing" without the leading
1228 space, if all routing has been deferred. When a domain has been held,
1229 so nothing has been done at all, both variables contain null strings. */
1233 if (driver_kind[1] == 't' && addr->router)
1234 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
1236 ss[1] = toupper(driver_kind[1]);
1237 s = string_append(s, &size, &ptr, 2, ss, driver_name);
1239 else if (driver_kind)
1240 s = string_append(s, &size, &ptr, 2, US" ", driver_kind);
1242 /*XXX need an s+s+p sprintf */
1243 sprintf(CS ss, " defer (%d)", addr->basic_errno);
1244 s = string_cat(s, &size, &ptr, ss);
1246 if (addr->basic_errno > 0)
1247 s = string_append(s, &size, &ptr, 2, US": ",
1248 US strerror(addr->basic_errno));
1250 if (addr->host_used)
1252 s = string_append(s, &size, &ptr, 5,
1253 US" H=", addr->host_used->name,
1254 US" [", addr->host_used->address, US"]");
1255 if (LOGGING(outgoing_port))
1257 int port = addr->host_used->port;
1258 s = string_append(s, &size, &ptr, 2,
1259 US":", port == PORT_NONE ? US"25" : string_sprintf("%d", port));
1264 s = string_append(s, &size, &ptr, 2, US": ", addr->message);
1268 /* Log the deferment in the message log, but don't clutter it
1269 up with retry-time defers after the first delivery attempt. */
1271 if (deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE)
1272 deliver_msglog("%s %s\n", now, s);
1274 /* Write the main log and reset the store.
1275 For errors of the type "retry time not reached" (also remotes skipped
1276 on queue run), logging is controlled by L_retry_defer. Note that this kind
1277 of error number is negative, and all the retry ones are less than any
1281 log_write(addr->basic_errno <= ERRNO_RETRY_BASE ? L_retry_defer : 0, logflags,
1284 store_reset(reset_point);
1291 failure_log(address_item * addr, uschar * driver_kind, uschar * now)
1293 int size = 256; /* Used for a temporary, */
1294 int ptr = 0; /* expanding buffer, for */
1295 uschar * s; /* building log lines; */
1296 void * reset_point; /* released afterwards. */
1298 /* Build up the log line for the message and main logs */
1300 s = reset_point = store_get(size);
1302 /* Create the address string for logging. Must not do this earlier, because
1303 an OK result may be changed to FAIL when a pipe returns text. */
1305 s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), FALSE);
1307 if (LOGGING(sender_on_delivery))
1308 s = string_append(s, &size, &ptr, 3, US" F=<", sender_address, US">");
1311 s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
1313 /* Return path may not be set if no delivery actually happened */
1315 if (used_return_path && LOGGING(return_path_on_delivery))
1316 s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
1319 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
1320 if (addr->transport)
1321 s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
1323 if (addr->host_used)
1324 s = d_hostlog(s, &size, &ptr, addr);
1327 s = d_tlslog(s, &size, &ptr, addr);
1330 if (addr->basic_errno > 0)
1331 s = string_append(s, &size, &ptr, 2, US": ", US strerror(addr->basic_errno));
1334 s = string_append(s, &size, &ptr, 2, US": ", addr->message);
1338 /* Do the logging. For the message log, "routing failed" for those cases,
1339 just to make it clearer. */
1342 deliver_msglog("%s %s failed for %s\n", now, driver_kind, s);
1344 deliver_msglog("%s %s\n", now, s);
1346 log_write(0, LOG_MAIN, "** %s", s);
1348 #ifndef DISABLE_EVENT
1349 msg_event_raise(US"msg:fail:delivery", addr);
1352 store_reset(reset_point);
1358 /*************************************************
1359 * Actions at the end of handling an address *
1360 *************************************************/
1362 /* This is a function for processing a single address when all that can be done
1363 with it has been done.
1366 addr points to the address block
1367 result the result of the delivery attempt
1368 logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC)
1369 driver_type indicates which type of driver (transport, or router) was last
1370 to process the address
1371 logchar '=' or '-' for use when logging deliveries with => or ->
1377 post_process_one(address_item *addr, int result, int logflags, int driver_type,
1380 uschar *now = tod_stamp(tod_log);
1381 uschar *driver_kind = NULL;
1382 uschar *driver_name = NULL;
1384 DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result);
1386 /* Set up driver kind and name for logging. Disable logging if the router or
1387 transport has disabled it. */
1389 if (driver_type == DTYPE_TRANSPORT)
1391 if (addr->transport)
1393 driver_name = addr->transport->name;
1394 driver_kind = US" transport";
1395 disable_logging = addr->transport->disable_logging;
1397 else driver_kind = US"transporting";
1399 else if (driver_type == DTYPE_ROUTER)
1403 driver_name = addr->router->name;
1404 driver_kind = US" router";
1405 disable_logging = addr->router->disable_logging;
1407 else driver_kind = US"routing";
1410 /* If there's an error message set, ensure that it contains only printing
1411 characters - it should, but occasionally things slip in and this at least
1412 stops the log format from getting wrecked. We also scan the message for an LDAP
1413 expansion item that has a password setting, and flatten the password. This is a
1414 fudge, but I don't know a cleaner way of doing this. (If the item is badly
1415 malformed, it won't ever have gone near LDAP.) */
1419 const uschar * s = string_printing(addr->message);
1421 /* deconst cast ok as string_printing known to have alloc'n'copied */
1422 addr->message = expand_hide_passwords(US s);
1425 /* If we used a transport that has one of the "return_output" options set, and
1426 if it did in fact generate some output, then for return_output we treat the
1427 message as failed if it was not already set that way, so that the output gets
1428 returned to the sender, provided there is a sender to send it to. For
1429 return_fail_output, do this only if the delivery failed. Otherwise we just
1430 unlink the file, and remove the name so that if the delivery failed, we don't
1431 try to send back an empty or unwanted file. The log_output options operate only
1432 on a non-empty file.
1434 In any case, we close the message file, because we cannot afford to leave a
1435 file-descriptor for one address while processing (maybe very many) others. */
1437 if (addr->return_file >= 0 && addr->return_filename)
1439 BOOL return_output = FALSE;
1440 struct stat statbuf;
1441 (void)EXIMfsync(addr->return_file);
1443 /* If there is no output, do nothing. */
1445 if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0)
1447 transport_instance *tb = addr->transport;
1449 /* Handle logging options */
1452 || result == FAIL && tb->log_fail_output
1453 || result == DEFER && tb->log_defer_output
1457 FILE *f = Ufopen(addr->return_filename, "rb");
1459 log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output "
1460 "from %s transport: %s", addr->return_filename, tb->name,
1463 if ((s = US Ufgets(big_buffer, big_buffer_size, f)))
1465 uschar *p = big_buffer + Ustrlen(big_buffer);
1467 while (p > big_buffer && isspace(p[-1])) p--;
1469 sp = string_printing(big_buffer);
1470 log_write(0, LOG_MAIN, "<%s>: %s transport output: %s",
1471 addr->address, tb->name, sp);
1476 /* Handle returning options, but only if there is an address to return
1479 if (sender_address[0] != 0 || addr->prop.errors_address)
1480 if (tb->return_output)
1482 addr->transport_return = result = FAIL;
1483 if (addr->basic_errno == 0 && !addr->message)
1484 addr->message = US"return message generated";
1485 return_output = TRUE;
1488 if (tb->return_fail_output && result == FAIL) return_output = TRUE;
1491 /* Get rid of the file unless it might be returned, but close it in
1496 Uunlink(addr->return_filename);
1497 addr->return_filename = NULL;
1498 addr->return_file = -1;
1501 (void)close(addr->return_file);
1504 /* The success case happens only after delivery by a transport. */
1508 addr->next = addr_succeed;
1509 addr_succeed = addr;
1511 /* Call address_done() to ensure that we don't deliver to this address again,
1512 and write appropriate things to the message log. If it is a child address, we
1513 call child_done() to scan the ancestors and mark them complete if this is the
1514 last child to complete. */
1516 address_done(addr, now);
1517 DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address);
1520 deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address,
1521 driver_name, driver_kind);
1524 deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address,
1525 addr->parent->address, driver_name, driver_kind);
1526 child_done(addr, now);
1529 /* Certificates for logging (via events) */
1531 tls_out.ourcert = addr->ourcert;
1532 addr->ourcert = NULL;
1533 tls_out.peercert = addr->peercert;
1534 addr->peercert = NULL;
1536 tls_out.cipher = addr->cipher;
1537 tls_out.peerdn = addr->peerdn;
1538 tls_out.ocsp = addr->ocsp;
1539 # ifdef EXPERIMENTAL_DANE
1540 tls_out.dane_verified = testflag(addr, af_dane_verified);
1544 delivery_log(LOG_MAIN, addr, logchar, NULL);
1547 tls_free_cert(&tls_out.ourcert);
1548 tls_free_cert(&tls_out.peercert);
1549 tls_out.cipher = NULL;
1550 tls_out.peerdn = NULL;
1551 tls_out.ocsp = OCSP_NOT_REQ;
1552 # ifdef EXPERIMENTAL_DANE
1553 tls_out.dane_verified = FALSE;
1559 /* Soft failure, or local delivery process failed; freezing may be
1562 else if (result == DEFER || result == PANIC)
1564 if (result == PANIC) logflags |= LOG_PANIC;
1566 /* This puts them on the chain in reverse order. Do not change this, because
1567 the code for handling retries assumes that the one with the retry
1568 information is last. */
1570 addr->next = addr_defer;
1573 /* The only currently implemented special action is to freeze the
1574 message. Logging of this is done later, just before the -H file is
1577 if (addr->special_action == SPECIAL_FREEZE)
1579 deliver_freeze = TRUE;
1580 deliver_frozen_at = time(NULL);
1581 update_spool = TRUE;
1584 /* If doing a 2-stage queue run, we skip writing to either the message
1585 log or the main log for SMTP defers. */
1587 if (!queue_2stage || addr->basic_errno != 0)
1588 deferral_log(addr, now, logflags, driver_name, driver_kind);
1592 /* Hard failure. If there is an address to which an error message can be sent,
1593 put this address on the failed list. If not, put it on the deferred list and
1594 freeze the mail message for human attention. The latter action can also be
1595 explicitly requested by a router or transport. */
1599 /* If this is a delivery error, or a message for which no replies are
1600 wanted, and the message's age is greater than ignore_bounce_errors_after,
1601 force the af_ignore_error flag. This will cause the address to be discarded
1602 later (with a log entry). */
1604 if (!*sender_address && message_age >= ignore_bounce_errors_after)
1605 setflag(addr, af_ignore_error);
1607 /* Freeze the message if requested, or if this is a bounce message (or other
1608 message with null sender) and this address does not have its own errors
1609 address. However, don't freeze if errors are being ignored. The actual code
1610 to ignore occurs later, instead of sending a message. Logging of freezing
1611 occurs later, just before writing the -H file. */
1613 if ( !testflag(addr, af_ignore_error)
1614 && ( addr->special_action == SPECIAL_FREEZE
1615 || (sender_address[0] == 0 && !addr->prop.errors_address)
1618 frozen_info = addr->special_action == SPECIAL_FREEZE
1620 : sender_local && !local_error_message
1621 ? US" (message created with -f <>)"
1622 : US" (delivery error message)";
1623 deliver_freeze = TRUE;
1624 deliver_frozen_at = time(NULL);
1625 update_spool = TRUE;
1627 /* The address is put on the defer rather than the failed queue, because
1628 the message is being retained. */
1630 addr->next = addr_defer;
1634 /* Don't put the address on the nonrecipients tree yet; wait until an
1635 error message has been successfully sent. */
1639 addr->next = addr_failed;
1643 failure_log(addr, driver_name ? NULL : driver_kind, now);
1646 /* Ensure logging is turned on again in all cases */
1648 disable_logging = FALSE;
1654 /*************************************************
1655 * Address-independent error *
1656 *************************************************/
1658 /* This function is called when there's an error that is not dependent on a
1659 particular address, such as an expansion string failure. It puts the error into
1660 all the addresses in a batch, logs the incident on the main and panic logs, and
1661 clears the expansions. It is mostly called from local_deliver(), but can be
1662 called for a remote delivery via findugid().
1665 logit TRUE if (MAIN+PANIC) logging required
1666 addr the first of the chain of addresses
1668 format format string for error message, or NULL if already set in addr
1669 ... arguments for the format
1675 common_error(BOOL logit, address_item *addr, int code, uschar *format, ...)
1677 address_item *addr2;
1678 addr->basic_errno = code;
1684 va_start(ap, format);
1685 if (!string_vformat(buffer, sizeof(buffer), CS format, ap))
1686 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1687 "common_error expansion was longer than " SIZE_T_FMT, sizeof(buffer));
1689 addr->message = string_copy(buffer);
1692 for (addr2 = addr->next; addr2; addr2 = addr2->next)
1694 addr2->basic_errno = code;
1695 addr2->message = addr->message;
1698 if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message);
1699 deliver_set_expansions(NULL);
1705 /*************************************************
1706 * Check a "never users" list *
1707 *************************************************/
1709 /* This function is called to check whether a uid is on one of the two "never
1713 uid the uid to be checked
1714 nusers the list to be scanned; the first item in the list is the count
1716 Returns: TRUE if the uid is on the list
1720 check_never_users(uid_t uid, uid_t *nusers)
1723 if (!nusers) return FALSE;
1724 for (i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE;
1730 /*************************************************
1731 * Find uid and gid for a transport *
1732 *************************************************/
1734 /* This function is called for both local and remote deliveries, to find the
1735 uid/gid under which to run the delivery. The values are taken preferentially
1736 from the transport (either explicit or deliver_as_creator), then from the
1737 address (i.e. the router), and if nothing is set, the exim uid/gid are used. If
1738 the resulting uid is on the "never_users" or the "fixed_never_users" list, a
1739 panic error is logged, and the function fails (which normally leads to delivery
1743 addr the address (possibly a chain)
1745 uidp pointer to uid field
1746 gidp pointer to gid field
1747 igfp pointer to the use_initgroups field
1749 Returns: FALSE if failed - error has been set in address(es)
1753 findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp,
1757 BOOL gid_set = FALSE;
1759 /* Default initgroups flag comes from the transport */
1761 *igfp = tp->initgroups;
1763 /* First see if there's a gid on the transport, either fixed or expandable.
1764 The expanding function always logs failure itself. */
1771 else if (tp->expand_gid)
1773 if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp,
1776 common_error(FALSE, addr, ERRNO_GIDFAIL, NULL);
1782 /* If the transport did not set a group, see if the router did. */
1784 if (!gid_set && testflag(addr, af_gid_set))
1790 /* Pick up a uid from the transport if one is set. */
1792 if (tp->uid_set) *uidp = tp->uid;
1794 /* Otherwise, try for an expandable uid field. If it ends up as a numeric id,
1795 it does not provide a passwd value from which a gid can be taken. */
1797 else if (tp->expand_uid)
1800 if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw,
1801 uidp, &(addr->message)))
1803 common_error(FALSE, addr, ERRNO_UIDFAIL, NULL);
1813 /* If the transport doesn't set the uid, test the deliver_as_creator flag. */
1815 else if (tp->deliver_as_creator)
1817 *uidp = originator_uid;
1820 *gidp = originator_gid;
1825 /* Otherwise see if the address specifies the uid and if so, take it and its
1828 else if (testflag(addr, af_uid_set))
1831 *igfp = testflag(addr, af_initgroups);
1834 /* Nothing has specified the uid - default to the Exim user, and group if the
1847 /* If no gid is set, it is a disaster. We default to the Exim gid only if
1848 defaulting to the Exim uid. In other words, if the configuration has specified
1849 a uid, it must also provide a gid. */
1853 common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for "
1854 "%s transport", tp->name);
1858 /* Check that the uid is not on the lists of banned uids that may not be used
1859 for delivery processes. */
1861 nuname = check_never_users(*uidp, never_users)
1863 : check_never_users(*uidp, fixed_never_users)
1864 ? US"fixed_never_users"
1868 common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport "
1869 "is on the %s list", (long int)(*uidp), tp->name, nuname);
1881 /*************************************************
1882 * Check the size of a message for a transport *
1883 *************************************************/
1885 /* Checks that the message isn't too big for the selected transport.
1886 This is called only when it is known that the limit is set.
1890 addr the (first) address being delivered
1893 DEFER expansion failed or did not yield an integer
1894 FAIL message too big
1898 check_message_size(transport_instance *tp, address_item *addr)
1903 deliver_set_expansions(addr);
1904 size_limit = expand_string_integer(tp->message_size_limit, TRUE);
1905 deliver_set_expansions(NULL);
1907 if (expand_string_message)
1910 addr->message = size_limit == -1
1911 ? string_sprintf("failed to expand message_size_limit "
1912 "in %s transport: %s", tp->name, expand_string_message)
1913 : string_sprintf("invalid message_size_limit "
1914 "in %s transport: %s", tp->name, expand_string_message);
1916 else if (size_limit > 0 && message_size > size_limit)
1920 string_sprintf("message is too big (transport limit = %d)",
1929 /*************************************************
1930 * Transport-time check for a previous delivery *
1931 *************************************************/
1933 /* Check that this base address hasn't previously been delivered to its routed
1934 transport. If it has been delivered, mark it done. The check is necessary at
1935 delivery time in order to handle homonymic addresses correctly in cases where
1936 the pattern of redirection changes between delivery attempts (so the unique
1937 fields change). Non-homonymic previous delivery is detected earlier, at routing
1938 time (which saves unnecessary routing).
1941 addr the address item
1942 testing TRUE if testing wanted only, without side effects
1944 Returns: TRUE if previously delivered by the transport
1948 previously_transported(address_item *addr, BOOL testing)
1950 (void)string_format(big_buffer, big_buffer_size, "%s/%s",
1951 addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name);
1953 if (tree_search(tree_nonrecipients, big_buffer) != 0)
1955 DEBUG(D_deliver|D_route|D_transport)
1956 debug_printf("%s was previously delivered (%s transport): discarded\n",
1957 addr->address, addr->transport->name);
1958 if (!testing) child_done(addr, tod_stamp(tod_log));
1967 /******************************************************
1968 * Check for a given header in a header string *
1969 ******************************************************/
1971 /* This function is used when generating quota warnings. The configuration may
1972 specify any header lines it likes in quota_warn_message. If certain of them are
1973 missing, defaults are inserted, so we need to be able to test for the presence
1977 hdr the required header name
1978 hstring the header string
1980 Returns: TRUE the header is in the string
1981 FALSE the header is not in the string
1985 contains_header(uschar *hdr, uschar *hstring)
1987 int len = Ustrlen(hdr);
1988 uschar *p = hstring;
1991 if (strncmpic(p, hdr, len) == 0)
1994 while (*p == ' ' || *p == '\t') p++;
1995 if (*p == ':') return TRUE;
1997 while (*p != 0 && *p != '\n') p++;
1998 if (*p == '\n') p++;
2006 /*************************************************
2007 * Perform a local delivery *
2008 *************************************************/
2010 /* Each local delivery is performed in a separate process which sets its
2011 uid and gid as specified. This is a safer way than simply changing and
2012 restoring using seteuid(); there is a body of opinion that seteuid() cannot be
2013 used safely. From release 4, Exim no longer makes any use of it. Besides, not
2014 all systems have seteuid().
2016 If the uid/gid are specified in the transport_instance, they are used; the
2017 transport initialization must ensure that either both or neither are set.
2018 Otherwise, the values associated with the address are used. If neither are set,
2019 it is a configuration error.
2021 The transport or the address may specify a home directory (transport over-
2022 rides), and if they do, this is set as $home. If neither have set a working
2023 directory, this value is used for that as well. Otherwise $home is left unset
2024 and the cwd is set to "/" - a directory that should be accessible to all users.
2026 Using a separate process makes it more complicated to get error information
2027 back. We use a pipe to pass the return code and also an error code and error
2028 text string back to the parent process.
2031 addr points to an address block for this delivery; for "normal" local
2032 deliveries this is the only address to be delivered, but for
2033 pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe)
2034 a number of addresses can be handled simultaneously, and in this
2035 case addr will point to a chain of addresses with the same
2038 shadowing TRUE if running a shadow transport; this causes output from pipes
2045 deliver_local(address_item *addr, BOOL shadowing)
2047 BOOL use_initgroups;
2050 int status, len, rc;
2053 uschar *working_directory;
2054 address_item *addr2;
2055 transport_instance *tp = addr->transport;
2057 /* Set up the return path from the errors or sender address. If the transport
2058 has its own return path setting, expand it and replace the existing value. */
2060 if(addr->prop.errors_address)
2061 return_path = addr->prop.errors_address;
2062 #ifdef EXPERIMENTAL_SRS
2063 else if (addr->prop.srs_sender)
2064 return_path = addr->prop.srs_sender;
2067 return_path = sender_address;
2069 if (tp->return_path)
2071 uschar *new_return_path = expand_string(tp->return_path);
2072 if (!new_return_path)
2074 if (!expand_string_forcedfail)
2076 common_error(TRUE, addr, ERRNO_EXPANDFAIL,
2077 US"Failed to expand return path \"%s\" in %s transport: %s",
2078 tp->return_path, tp->name, expand_string_message);
2082 else return_path = new_return_path;
2085 /* For local deliveries, one at a time, the value used for logging can just be
2086 set directly, once and for all. */
2088 used_return_path = return_path;
2090 /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message
2091 gets put into the address(es), and the expansions are unset, so we can just
2094 if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return;
2096 /* See if either the transport or the address specifies a home directory. A
2097 home directory set in the address may already be expanded; a flag is set to
2098 indicate that. In other cases we must expand it. */
2100 if ( (deliver_home = tp->home_dir) /* Set in transport, or */
2101 || ( (deliver_home = addr->home_dir) /* Set in address and */
2102 && !testflag(addr, af_home_expanded) /* not expanded */
2105 uschar *rawhome = deliver_home;
2106 deliver_home = NULL; /* in case it contains $home */
2107 if (!(deliver_home = expand_string(rawhome)))
2109 common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed "
2110 "to expand for %s transport: %s", rawhome, tp->name,
2111 expand_string_message);
2114 if (*deliver_home != '/')
2116 common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" "
2117 "is not absolute for %s transport", deliver_home, tp->name);
2122 /* See if either the transport or the address specifies a current directory,
2123 and if so, expand it. If nothing is set, use the home directory, unless it is
2124 also unset in which case use "/", which is assumed to be a directory to which
2125 all users have access. It is necessary to be in a visible directory for some
2126 operating systems when running pipes, as some commands (e.g. "rm" under Solaris
2127 2.5) require this. */
2129 working_directory = tp->current_dir ? tp->current_dir : addr->current_dir;
2130 if (working_directory)
2132 uschar *raw = working_directory;
2133 if (!(working_directory = expand_string(raw)))
2135 common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" "
2136 "failed to expand for %s transport: %s", raw, tp->name,
2137 expand_string_message);
2140 if (*working_directory != '/')
2142 common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path "
2143 "\"%s\" is not absolute for %s transport", working_directory, tp->name);
2147 else working_directory = deliver_home ? deliver_home : US"/";
2149 /* If one of the return_output flags is set on the transport, create and open a
2150 file in the message log directory for the transport to write its output onto.
2151 This is mainly used by pipe transports. The file needs to be unique to the
2152 address. This feature is not available for shadow transports. */
2155 && ( tp->return_output || tp->return_fail_output
2156 || tp->log_output || tp->log_fail_output || tp->log_defer_output
2161 addr->return_filename =
2162 spool_fname(US"msglog", message_subdir, message_id,
2163 string_sprintf("-%d-%d", getpid(), return_count++));
2165 if ((addr->return_file = open_msglog_file(addr->return_filename, 0400, &error)) < 0)
2167 common_error(TRUE, addr, errno, US"Unable to %s file for %s transport "
2168 "to return message: %s", error, tp->name, strerror(errno));
2173 /* Create the pipe for inter-process communication. */
2177 common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s",
2182 /* Now fork the process to do the real work in the subprocess, but first
2183 ensure that all cached resources are freed so that the subprocess starts with
2184 a clean slate and doesn't interfere with the parent process. */
2188 if ((pid = fork()) == 0)
2190 BOOL replicate = TRUE;
2192 /* Prevent core dumps, as we don't want them in users' home directories.
2193 HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that
2194 system. Some experimental/developing systems (e.g. GNU/Hurd) may define
2195 RLIMIT_CORE but not support it in setrlimit(). For such systems, do not
2196 complain if the error is "not supported".
2198 There are two scenarios where changing the max limit has an effect. In one,
2199 the user is using a .forward and invoking a command of their choice via pipe;
2200 for these, we do need the max limit to be 0 unless the admin chooses to
2201 permit an increased limit. In the other, the command is invoked directly by
2202 the transport and is under administrator control, thus being able to raise
2203 the limit aids in debugging. So there's no general always-right answer.
2205 Thus we inhibit core-dumps completely but let individual transports, while
2206 still root, re-raise the limits back up to aid debugging. We make the
2207 default be no core-dumps -- few enough people can use core dumps in
2208 diagnosis that it's reasonable to make them something that has to be explicitly requested.
2215 if (setrlimit(RLIMIT_CORE, &rl) < 0)
2217 # ifdef SETRLIMIT_NOT_SUPPORTED
2218 if (errno != ENOSYS && errno != ENOTSUP)
2220 log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s",
2225 /* Reset the random number generator, so different processes don't all
2226 have the same sequence. */
2230 /* If the transport has a setup entry, call this first, while still
2231 privileged. (Appendfile uses this to expand quota, for example, while
2232 able to read private files.) */
2234 if (addr->transport->setup)
2235 switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid,
2239 addr->transport_return = DEFER;
2243 addr->transport_return = PANIC;
2247 /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as
2248 when the process becomes unprivileged, it won't be able to write to the
2249 process log. SIGHUP is ignored throughout exim, except when it is being
2252 signal(SIGINT, SIG_IGN);
2253 signal(SIGTERM, SIG_IGN);
2254 signal(SIGUSR1, SIG_IGN);
2256 /* Close the unwanted half of the pipe, and set close-on-exec for the other
2257 half - for transports that exec things (e.g. pipe). Then set the required
2260 (void)close(pfd[pipe_read]);
2261 (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) |
2263 exim_setugid(uid, gid, use_initgroups,
2264 string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part,
2265 addr->address, addr->transport->name));
2269 address_item *batched;
2270 debug_printf(" home=%s current=%s\n", deliver_home, working_directory);
2271 for (batched = addr->next; batched; batched = batched->next)
2272 debug_printf("additional batched address: %s\n", batched->address);
2275 /* Set an appropriate working directory. */
2277 if (Uchdir(working_directory) < 0)
2279 addr->transport_return = DEFER;
2280 addr->basic_errno = errno;
2281 addr->message = string_sprintf("failed to chdir to %s", working_directory);
2284 /* If successful, call the transport */
2289 set_process_info("delivering %s to %s using %s", message_id,
2290 addr->local_part, addr->transport->name);
2292 /* Setting this global in the subprocess means we need never clear it */
2293 transport_name = addr->transport->name;
2295 /* If a transport filter has been specified, set up its argument list.
2296 Any errors will get put into the address, and FALSE yielded. */
2298 if (addr->transport->filter_command)
2300 ok = transport_set_up_command(&transport_filter_argv,
2301 addr->transport->filter_command,
2302 TRUE, PANIC, addr, US"transport filter", NULL);
2303 transport_filter_timeout = addr->transport->filter_timeout;
2305 else transport_filter_argv = NULL;
2309 debug_print_string(addr->transport->debug_string);
2310 replicate = !(addr->transport->info->code)(addr->transport, addr);
2314 /* Pass the results back down the pipe. If necessary, first replicate the
2315 status in the top address to the others in the batch. The label is the
2316 subject of a goto when a call to the transport's setup function fails. We
2317 pass the pointer to the transport back in case it got changed as a result of
2318 file_format in appendfile. */
2322 if (replicate) replicate_status(addr);
2323 for (addr2 = addr; addr2; addr2 = addr2->next)
2326 int local_part_length = Ustrlen(addr2->local_part);
2330 if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int)
2331 || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count)
2332 || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags)
2333 || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int)
2334 || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int)
2335 || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int)
2336 || (ret = write(pfd[pipe_write], &addr2->transport,
2337 sizeof(transport_instance *))) != sizeof(transport_instance *)
2339 /* For a file delivery, pass back the local part, in case the original
2340 was only part of the final delivery path. This gives more complete
2343 || (testflag(addr2, af_file)
2344 && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int)
2345 || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length
2349 log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n",
2350 ret == -1 ? strerror(errno) : "short write");
2352 /* Now any messages */
2354 for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message)
2356 int message_length = s ? Ustrlen(s) + 1 : 0;
2357 if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int)
2358 || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length
2360 log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n",
2361 ret == -1 ? strerror(errno) : "short write");
2365 /* OK, this process is now done. Free any cached resources that it opened,
2366 and close the pipe we were writing down before exiting. */
2368 (void)close(pfd[pipe_write]);
2373 /* Back in the main process: panic if the fork did not succeed. This seems
2374 better than returning an error - if forking is failing it is probably best
2375 not to try other deliveries for this message. */
2378 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s",
2381 /* Read the pipe to get the delivery status codes and error messages. Our copy
2382 of the writing end must be closed first, as otherwise read() won't return zero
2383 on an empty pipe. We check that a status exists for each address before
2384 overwriting the address structure. If data is missing, the default DEFER status
2385 will remain. Afterwards, close the reading end. */
2387 (void)close(pfd[pipe_write]);
2389 for (addr2 = addr; addr2; addr2 = addr2->next)
2391 len = read(pfd[pipe_read], &status, sizeof(int));
2397 addr2->transport_return = status;
2398 len = read(pfd[pipe_read], &transport_count,
2399 sizeof(transport_count));
2400 len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags));
2401 len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int));
2402 len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int));
2403 len = read(pfd[pipe_read], &addr2->special_action, sizeof(int));
2404 len = read(pfd[pipe_read], &addr2->transport,
2405 sizeof(transport_instance *));
2407 if (testflag(addr2, af_file))
2409 int local_part_length;
2410 len = read(pfd[pipe_read], &local_part_length, sizeof(int));
2411 len = read(pfd[pipe_read], big_buffer, local_part_length);
2412 big_buffer[local_part_length] = 0;
2413 addr2->local_part = string_copy(big_buffer);
2416 for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message)
2419 len = read(pfd[pipe_read], &message_length, sizeof(int));
2420 if (message_length > 0)
2422 len = read(pfd[pipe_read], big_buffer, message_length);
2423 big_buffer[big_buffer_size-1] = '\0'; /* guard byte */
2424 if (len > 0) *sptr = string_copy(big_buffer);
2431 log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s "
2432 "from delivery subprocess", addr2->unique);
2437 (void)close(pfd[pipe_read]);
2439 /* Unless shadowing, write all successful addresses immediately to the journal
2440 file, to ensure they are recorded asap. For homonymic addresses, use the base
2441 address plus the transport name. Failure to write the journal is panic-worthy,
2442 but don't stop, as it may prove possible subsequently to update the spool file
2443 in order to record the delivery. */
2447 for (addr2 = addr; addr2; addr2 = addr2->next)
2448 if (addr2->transport_return == OK)
2450 if (testflag(addr2, af_homonym))
2451 sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name);
2453 sprintf(CS big_buffer, "%.500s\n", addr2->unique);
2455 /* In the test harness, wait just a bit to let the subprocess finish off
2456 any debug output etc first. */
2458 if (running_in_test_harness) millisleep(300);
2460 DEBUG(D_deliver) debug_printf("journalling %s", big_buffer);
2461 len = Ustrlen(big_buffer);
2462 if (write(journal_fd, big_buffer, len) != len)
2463 log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s",
2464 big_buffer, strerror(errno));
2467 /* Ensure the journal file is pushed out to disk. */
2469 if (EXIMfsync(journal_fd) < 0)
2470 log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s",
2474 /* Wait for the process to finish. If it terminates with a non-zero code,
2475 freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the
2476 status values of all the addresses as they are. Take care to handle the case
2477 when the subprocess doesn't seem to exist. This has been seen on one system
2478 when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that
2479 happens, wait() doesn't recognize the termination of child processes. Exim now
2480 resets SIGCHLD to SIG_DFL, but this code should still be robust. */
2482 while ((rc = wait(&status)) != pid)
2483 if (rc < 0 && errno == ECHILD) /* Process has vanished */
2485 log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly",
2486 addr->transport->driver_name);
2491 if ((status & 0xffff) != 0)
2493 int msb = (status >> 8) & 255;
2494 int lsb = status & 255;
2495 int code = (msb == 0)? (lsb & 0x7f) : msb;
2496 if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT))
2497 addr->special_action = SPECIAL_FREEZE;
2498 log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero "
2499 "status 0x%04x: %s %d",
2500 addr->transport->driver_name,
2502 msb == 0 ? "terminated by signal" : "exit code",
2506 /* If SPECIAL_WARN is set in the top address, send a warning message. */
2508 if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message)
2511 uschar *warn_message;
2514 DEBUG(D_deliver) debug_printf("Warning message requested by transport\n");
2516 if (!(warn_message = expand_string(addr->transport->warn_message)))
2517 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning "
2518 "message for %s transport): %s", addr->transport->warn_message,
2519 addr->transport->name, expand_string_message);
2521 else if ((pid = child_open_exim(&fd)) > 0)
2523 FILE *f = fdopen(fd, "wb");
2524 if (errors_reply_to && !contains_header(US"Reply-To", warn_message))
2525 fprintf(f, "Reply-To: %s\n", errors_reply_to);
2526 fprintf(f, "Auto-Submitted: auto-replied\n");
2527 if (!contains_header(US"From", warn_message))
2529 fprintf(f, "%s", CS warn_message);
2531 /* Close and wait for child process to complete, without a timeout. */
2534 (void)child_close(pid, 0);
2537 addr->special_action = SPECIAL_NONE;
2544 /* Check transport for the given concurrency limit. Return TRUE if over
2545 the limit (or an expansion failure), else FALSE and if there was a limit,
2546 the key for the hints database used for the concurrency count. */
2549 tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key)
2551 unsigned max_parallel;
2553 if (!tp->max_parallel) return FALSE;
2555 max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE);
2556 if (expand_string_message)
2558 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option "
2559 "in %s transport (%s): %s", tp->name, addr->address,
2560 expand_string_message);
2564 if (max_parallel > 0)
2566 uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name);
2567 if (!enq_start(serialize_key, max_parallel))
2569 address_item * next;
2571 debug_printf("skipping tpt %s because concurrency limit %u reached\n",
2572 tp->name, max_parallel);
2576 addr->message = US"concurrency limit reached for transport";
2577 addr->basic_errno = ERRNO_TRETRY;
2578 post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0);
2579 } while ((addr = next));
2582 *key = serialize_key;
2589 /*************************************************
2590 * Do local deliveries *
2591 *************************************************/
2593 /* This function processes the list of addresses in addr_local. True local
2594 deliveries are always done one address at a time. However, local deliveries can
2595 be batched up in some cases. Typically this is when writing batched SMTP output
2596 files for use by some external transport mechanism, or when running local
2597 deliveries over LMTP.
2604 do_local_deliveries(void)
2607 open_db *dbm_file = NULL;
2608 time_t now = time(NULL);
2610 /* Loop until we have exhausted the supply of local deliveries */
2614 time_t delivery_start;
2616 address_item *addr2, *addr3, *nextaddr;
2617 int logflags = LOG_MAIN;
2618 int logchar = dont_deliver? '*' : '=';
2619 transport_instance *tp;
2620 uschar * serialize_key = NULL;
2622 /* Pick the first undelivered address off the chain */
2624 address_item *addr = addr_local;
2625 addr_local = addr->next;
2628 DEBUG(D_deliver|D_transport)
2629 debug_printf("--------> %s <--------\n", addr->address);
2631 /* An internal disaster if there is no transport. Should not occur! */
2633 if (!(tp = addr->transport))
2635 logflags |= LOG_PANIC;
2636 disable_logging = FALSE; /* Jic */
2637 addr->message = addr->router
2638 ? string_sprintf("No transport set by %s router", addr->router->name)
2639 : string_sprintf("No transport set by system filter");
2640 post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0);
2644 /* Check that this base address hasn't previously been delivered to this
2645 transport. The check is necessary at this point to handle homonymic addresses
2646 correctly in cases where the pattern of redirection changes between delivery
2647 attempts. Non-homonymic previous delivery is detected earlier, at routing
2650 if (previously_transported(addr, FALSE)) continue;
2652 /* There are weird cases where logging is disabled */
2654 disable_logging = tp->disable_logging;
2656 /* Check for batched addresses and possible amalgamation. Skip all the work
2657 if either batch_max <= 1 or there aren't any other addresses for local
2660 if (tp->batch_max > 1 && addr_local)
2662 int batch_count = 1;
2663 BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain");
2664 BOOL uses_lp = ( testflag(addr, af_pfr)
2665 && (testflag(addr, af_file) || addr->local_part[0] == '|')
2667 || readconf_depends((driver_instance *)tp, US"local_part");
2668 uschar *batch_id = NULL;
2669 address_item **anchor = &addr_local;
2670 address_item *last = addr;
2673 /* Expand the batch_id string for comparison with other addresses.
2674 Expansion failure suppresses batching. */
2678 deliver_set_expansions(addr);
2679 batch_id = expand_string(tp->batch_id);
2680 deliver_set_expansions(NULL);
2683 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
2684 "in %s transport (%s): %s", tp->name, addr->address,
2685 expand_string_message);
2686 batch_count = tp->batch_max;
2690 /* Until we reach the batch_max limit, pick off addresses which have the
2691 same characteristics. These are:
2694 not previously delivered (see comment about 50 lines above)
2695 same local part if the transport's configuration contains $local_part
2696 or if this is a file or pipe delivery from a redirection
2697 same domain if the transport's configuration contains $domain
2699 same additional headers
2700 same headers to be removed
2701 same uid/gid for running the transport
2702 same first host if a host list is set
2705 while ((next = *anchor) && batch_count < tp->batch_max)
2708 tp == next->transport
2709 && !previously_transported(next, TRUE)
2710 && (addr->flags & (af_pfr|af_file)) == (next->flags & (af_pfr|af_file))
2711 && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0)
2712 && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0)
2713 && same_strings(next->prop.errors_address, addr->prop.errors_address)
2714 && same_headers(next->prop.extra_headers, addr->prop.extra_headers)
2715 && same_strings(next->prop.remove_headers, addr->prop.remove_headers)
2716 && same_ugid(tp, addr, next)
2717 && ( !addr->host_list && !next->host_list
2720 && Ustrcmp(addr->host_list->name, next->host_list->name) == 0
2723 /* If the transport has a batch_id setting, batch_id will be non-NULL
2724 from the expansion outside the loop. Expand for this address and compare.
2725 Expansion failure makes this address ineligible for batching. */
2730 address_item *save_nextnext = next->next;
2731 next->next = NULL; /* Expansion for a single address */
2732 deliver_set_expansions(next);
2733 next->next = save_nextnext;
2734 bid = expand_string(tp->batch_id);
2735 deliver_set_expansions(NULL);
2738 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
2739 "in %s transport (%s): %s", tp->name, next->address,
2740 expand_string_message);
2743 else ok = (Ustrcmp(batch_id, bid) == 0);
2746 /* Take address into batch if OK. */
2750 *anchor = next->next; /* Include the address */
2756 else anchor = &next->next; /* Skip the address */
2760 /* We now have one or more addresses that can be delivered in a batch. Check
2761 whether the transport is prepared to accept a message of this size. If not,
2762 fail them all forthwith. If the expansion fails, or does not yield an
2763 integer, defer delivery. */
2765 if (tp->message_size_limit)
2767 int rc = check_message_size(tp, addr);
2770 replicate_status(addr);
2774 post_process_one(addr, rc, logflags, DTYPE_TRANSPORT, 0);
2777 continue; /* With next batch of addresses */
2781 /* If we are not running the queue, or if forcing, all deliveries will be
2782 attempted. Otherwise, we must respect the retry times for each address. Even
2783 when not doing this, we need to set up the retry key string, and determine
2784 whether a retry record exists, because after a successful delivery, a delete
2785 retry item must be set up. Keep the retry database open only for the duration
2786 of these checks, rather than for all local deliveries, because some local
2787 deliveries (e.g. to pipes) can take a substantial time. */
2789 if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE)))
2791 DEBUG(D_deliver|D_retry|D_hints_lookup)
2792 debug_printf("no retry data available\n");
2799 BOOL ok = TRUE; /* to deliver this address */
2802 /* Set up the retry key to include the domain or not, and change its
2803 leading character from "R" to "T". Must make a copy before doing this,
2804 because the old key may be pointed to from a "delete" retry item after
2807 retry_key = string_copy(
2808 tp->retry_use_local_part ? addr2->address_retry_key :
2809 addr2->domain_retry_key);
2812 /* Inspect the retry data. If there is no hints file, delivery happens. */
2816 dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key);
2818 /* If there is no retry record, delivery happens. If there is,
2819 remember it exists so it can be deleted after a successful delivery. */
2823 setflag(addr2, af_lt_retry_exists);
2825 /* A retry record exists for this address. If queue running and not
2826 forcing, inspect its contents. If the record is too old, or if its
2827 retry time has come, or if it has passed its cutoff time, delivery
2832 debug_printf("retry record exists: age=%s ",
2833 readconf_printtime(now - retry_record->time_stamp));
2834 debug_printf("(max %s)\n", readconf_printtime(retry_data_expire));
2835 debug_printf(" time to retry = %s expired = %d\n",
2836 readconf_printtime(retry_record->next_try - now),
2837 retry_record->expired);
2840 if (queue_running && !deliver_force)
2842 ok = (now - retry_record->time_stamp > retry_data_expire)
2843 || (now >= retry_record->next_try)
2844 || retry_record->expired;
2846 /* If we haven't reached the retry time, there is one more check
2847 to do, which is for the ultimate address timeout. */
2850 ok = retry_ultimate_address_timeout(retry_key, addr2->domain,
2854 else DEBUG(D_retry) debug_printf("no retry record exists\n");
2857 /* This address is to be delivered. Leave it on the chain. */
2862 addr2 = addr2->next;
2865 /* This address is to be deferred. Take it out of the chain, and
2866 post-process it as complete. Must take it out of the chain first,
2867 because post processing puts it on another chain. */
2871 address_item *this = addr2;
2872 this->message = US"Retry time not yet reached";
2873 this->basic_errno = ERRNO_LRETRY;
2874 addr2 = addr3 ? (addr3->next = addr2->next)
2875 : (addr = addr2->next);
2876 post_process_one(this, DEFER, logflags, DTYPE_TRANSPORT, 0);
2880 if (dbm_file) dbfn_close(dbm_file);
2882 /* If there are no addresses left on the chain, they all deferred. Loop
2883 for the next set of addresses. */
2885 if (!addr) continue;
2887 /* If the transport is limited for parallellism, enforce that here.
2888 We use a hints DB entry, incremented here and decremented after
2889 the transport (and any shadow transport) completes. */
2891 if (tpt_parallel_check(tp, addr, &serialize_key))
2893 if (expand_string_message)
2895 logflags |= LOG_PANIC;
2899 post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0);
2900 } while ((addr = addr2));
2902 continue; /* Loop for the next set of addresses. */
2906 /* So, finally, we do have some addresses that can be passed to the
2907 transport. Before doing so, set up variables that are relevant to a
2910 deliver_set_expansions(addr);
2911 delivery_start = time(NULL);
2912 deliver_local(addr, FALSE);
2913 deliver_time = (int)(time(NULL) - delivery_start);
2915 /* If a shadow transport (which must perforce be another local transport), is
2916 defined, and its condition is met, we must pass the message to the shadow
2917 too, but only those addresses that succeeded. We do this by making a new
2918 chain of addresses - also to keep the original chain uncontaminated. We must
2919 use a chain rather than doing it one by one, because the shadow transport may
2922 NOTE: if the condition fails because of a lookup defer, there is nothing we
2926 && ( !tp->shadow_condition
2927 || expand_check_condition(tp->shadow_condition, tp->name, US"transport")
2930 transport_instance *stp;
2931 address_item *shadow_addr = NULL;
2932 address_item **last = &shadow_addr;
2934 for (stp = transports; stp; stp = stp->next)
2935 if (Ustrcmp(stp->name, tp->shadow) == 0) break;
2938 log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ",
2941 /* Pick off the addresses that have succeeded, and make clones. Put into
2942 the shadow_message field a pointer to the shadow_message field of the real
2945 else for (addr2 = addr; addr2; addr2 = addr2->next)
2946 if (addr2->transport_return == OK)
2948 addr3 = store_get(sizeof(address_item));
2951 addr3->shadow_message = (uschar *) &(addr2->shadow_message);
2952 addr3->transport = stp;
2953 addr3->transport_return = DEFER;
2954 addr3->return_filename = NULL;
2955 addr3->return_file = -1;
2957 last = &(addr3->next);
2960 /* If we found any addresses to shadow, run the delivery, and stick any
2961 message back into the shadow_message field in the original. */
2965 int save_count = transport_count;
2967 DEBUG(D_deliver|D_transport)
2968 debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n");
2969 deliver_local(shadow_addr, TRUE);
2971 for(; shadow_addr; shadow_addr = shadow_addr->next)
2973 int sresult = shadow_addr->transport_return;
2974 *(uschar **)shadow_addr->shadow_message =
2976 ? string_sprintf(" ST=%s", stp->name)
2977 : string_sprintf(" ST=%s (%s%s%s)", stp->name,
2978 shadow_addr->basic_errno <= 0
2980 : US strerror(shadow_addr->basic_errno),
2981 shadow_addr->basic_errno <= 0 || !shadow_addr->message
2984 shadow_addr->message
2985 ? shadow_addr->message
2986 : shadow_addr->basic_errno <= 0
2990 DEBUG(D_deliver|D_transport)
2991 debug_printf("%s shadow transport returned %s for %s\n",
2993 sresult == OK ? "OK" :
2994 sresult == DEFER ? "DEFER" :
2995 sresult == FAIL ? "FAIL" :
2996 sresult == PANIC ? "PANIC" : "?",
2997 shadow_addr->address);
3000 DEBUG(D_deliver|D_transport)
3001 debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n");
3003 transport_count = save_count; /* Restore original transport count */
3007 /* Cancel the expansions that were set up for the delivery. */
3009 deliver_set_expansions(NULL);
3011 /* If the transport was parallelism-limited, decrement the hints DB record. */
3013 if (serialize_key) enq_end(serialize_key);
3015 /* Now we can process the results of the real transport. We must take each
3016 address off the chain first, because post_process_one() puts it on another
3019 for (addr2 = addr; addr2; addr2 = nextaddr)
3021 int result = addr2->transport_return;
3022 nextaddr = addr2->next;
3024 DEBUG(D_deliver|D_transport)
3025 debug_printf("%s transport returned %s for %s\n",
3027 result == OK ? "OK" :
3028 result == DEFER ? "DEFER" :
3029 result == FAIL ? "FAIL" :
3030 result == PANIC ? "PANIC" : "?",
3033 /* If there is a retry_record, or if delivery is deferred, build a retry
3034 item for setting a new retry time or deleting the old retry record from
3035 the database. These items are handled all together after all addresses
3036 have been handled (so the database is open just for a short time for
3039 if (result == DEFER || testflag(addr2, af_lt_retry_exists))
3041 int flags = result == DEFER ? 0 : rf_delete;
3042 uschar *retry_key = string_copy(tp->retry_use_local_part
3043 ? addr2->address_retry_key : addr2->domain_retry_key);
3045 retry_add_item(addr2, retry_key, flags);
3048 /* Done with this address */
3050 if (result == OK) addr2->more_errno = deliver_time;
3051 post_process_one(addr2, result, logflags, DTYPE_TRANSPORT, logchar);
3053 /* If a pipe delivery generated text to be sent back, the result may be
3054 changed to FAIL, and we must copy this for subsequent addresses in the
3057 if (addr2->transport_return != result)
3059 for (addr3 = nextaddr; addr3; addr3 = addr3->next)
3061 addr3->transport_return = addr2->transport_return;
3062 addr3->basic_errno = addr2->basic_errno;
3063 addr3->message = addr2->message;
3065 result = addr2->transport_return;
3068 /* Whether or not the result was changed to FAIL, we need to copy the
3069 return_file value from the first address into all the addresses of the
3070 batch, so they are all listed in the error message. */
3072 addr2->return_file = addr->return_file;
3074 /* Change log character for recording successful deliveries. */
3076 if (result == OK) logchar = '-';
3078 } /* Loop back for next batch of addresses */
3084 /*************************************************
3085 * Sort remote deliveries *
3086 *************************************************/
3088 /* This function is called if remote_sort_domains is set. It arranges that the
3089 chain of addresses for remote deliveries is ordered according to the strings
3090 specified. Try to make this shuffling reasonably efficient by handling
3091 sequences of addresses rather than just single ones.
3098 sort_remote_deliveries(void)
3101 address_item **aptr = &addr_remote;
3102 const uschar *listptr = remote_sort_domains;
3107 && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf)))
3110 address_item *moved = NULL;
3111 address_item **bptr = &moved;
3115 address_item **next;
3116 deliver_domain = (*aptr)->domain; /* set $domain */
3117 if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1,
3118 &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK)
3120 aptr = &(*aptr)->next;
3124 next = &(*aptr)->next;
3126 && (deliver_domain = (*next)->domain, /* Set $domain */
3127 match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1,
3128 &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK
3130 next = &(*next)->next;
3132 /* If the batch of non-matchers is at the end, add on any that were
3133 extracted further up the chain, and end this iteration. Otherwise,
3134 extract them from the chain and hang on the moved chain. */
3146 aptr = &(*aptr)->next;
3149 /* If the loop ended because the final address matched, *aptr will
3150 be NULL. Add on to the end any extracted non-matching addresses. If
3151 *aptr is not NULL, the loop ended via "break" when *next is null, that
3152 is, there was a string of non-matching addresses at the end. In this
3153 case the extracted addresses have already been added on the end. */
3155 if (!*aptr) *aptr = moved;
3161 debug_printf("remote addresses after sorting:\n");
3162 for (addr = addr_remote; addr; addr = addr->next)
3163 debug_printf(" %s\n", addr->address);
3169 /*************************************************
3170 * Read from pipe for remote delivery subprocess *
3171 *************************************************/
3173 /* This function is called when the subprocess is complete, but can also be
3174 called before it is complete, in order to empty a pipe that is full (to prevent
3175 deadlock). It must therefore keep track of its progress in the parlist data
3178 We read the pipe to get the delivery status codes and a possible error message
3179 for each address, optionally preceded by unusability data for the hosts and
3180 also by optional retry data.
3182 Read in large chunks into the big buffer and then scan through, interpreting
3183 the data therein. In most cases, only a single read will be necessary. No
3184 individual item will ever be anywhere near 2500 bytes in length, so by ensuring
3185 that we read the next chunk when there is less than 2500 bytes left in the
3186 non-final chunk, we can assume each item is complete in the buffer before
3187 handling it. Each item is written using a single write(), which is atomic for
3188 small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and
3189 often bigger) so even if we are reading while the subprocess is still going, we
3190 should never have only a partial item in the buffer.
3193 poffset the offset of the parlist item
3194 eop TRUE if the process has completed
3196 Returns: TRUE if the terminating 'Z' item has been read,
3197 or there has been a disaster (i.e. no more data needed);
3202 par_read_pipe(int poffset, BOOL eop)
3205 pardata *p = parlist + poffset;
3206 address_item *addrlist = p->addrlist;
3207 address_item *addr = p->addr;
3210 uschar *endptr = big_buffer;
3211 uschar *ptr = endptr;
3212 uschar *msg = p->msg;
3213 BOOL done = p->done;
3214 BOOL unfinished = TRUE;
3215 /* minimum size to read is header size including id, subid and length */
3216 int required = PIPE_HEADER_SIZE;
3218 /* Loop through all items, reading from the pipe when necessary. The pipe
3219 is set up to be non-blocking, but there are two different Unix mechanisms in
3220 use. Exim uses O_NONBLOCK if it is defined. This returns 0 for end of file,
3221 and EAGAIN for no more data. If O_NONBLOCK is not defined, Exim uses O_NDELAY,
3222 which returns 0 for both end of file and no more data. We distinguish the
3223 two cases by taking 0 as end of file only when we know the process has
3226 Each separate item is written to the pipe in a single write(), and as they are
3227 all short items, the writes will all be atomic and we should never find
3228 ourselves in the position of having read an incomplete item. "Short" in this
3229 case can mean up to about 1K in the case when there is a long error message
3230 associated with an address. */
3232 DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n",
3233 (int)p->pid, eop? "ended" : "not ended");
3237 retry_item *r, **rp;
3238 int remaining = endptr - ptr;
3239 uschar header[PIPE_HEADER_SIZE + 1];
3243 /* Read (first time) or top up the chars in the buffer if necessary.
3244 There will be only one read if we get all the available data (i.e. don't
3245 fill the buffer completely). */
3247 if (remaining < required && unfinished)
3250 int available = big_buffer_size - remaining;
3252 if (remaining > 0) memmove(big_buffer, ptr, remaining);
3255 endptr = big_buffer + remaining;
3256 len = read(fd, endptr, available);
3258 DEBUG(D_deliver) debug_printf("read() yielded %d\n", len);
3260 /* If the result is EAGAIN and the process is not complete, just
3261 stop reading any more and process what we have already. */
3265 if (!eop && errno == EAGAIN) len = 0; else
3267 msg = string_sprintf("failed to read pipe from transport process "
3268 "%d for transport %s: %s", pid, addr->transport->driver_name,
3274 /* If the length is zero (eof or no-more-data), just process what we
3275 already have. Note that if the process is still running and we have
3276 read all the data in the pipe (but less that "available") then we
3277 won't read any more, as "unfinished" will get set FALSE. */
3281 unfinished = len == available;
3284 /* If we are at the end of the available data, exit the loop. */
3285 if (ptr >= endptr) break;
3287 /* copy and read header */
3288 memcpy(header, ptr, PIPE_HEADER_SIZE);
3289 header[PIPE_HEADER_SIZE] = '\0';
3292 required = Ustrtol(header + 2, &endc, 10) + PIPE_HEADER_SIZE; /* header + data */
3295 msg = string_sprintf("failed to read pipe from transport process "
3296 "%d for transport %s: error reading size from header", pid, addr->transport->driver_name);
3302 debug_printf("header read id:%c,subid:%c,size:%s,required:%d,remaining:%d,unfinished:%d\n",
3303 id, subid, header+2, required, remaining, unfinished);
3305 /* is there room for the dataset we want to read ? */
3306 if (required > big_buffer_size - PIPE_HEADER_SIZE)
3308 msg = string_sprintf("failed to read pipe from transport process "
3309 "%d for transport %s: big_buffer too small! required size=%d buffer size=%d", pid, addr->transport->driver_name,
3310 required, big_buffer_size - PIPE_HEADER_SIZE);
3315 /* we wrote all datasets with atomic write() calls
3316 remaining < required only happens if big_buffer was too small
3317 to get all available data from pipe. unfinished has to be true
3319 if (remaining < required)
3323 msg = string_sprintf("failed to read pipe from transport process "
3324 "%d for transport %s: required size=%d > remaining size=%d and unfinished=false",
3325 pid, addr->transport->driver_name, required, remaining);
3330 /* step behind the header */
3331 ptr += PIPE_HEADER_SIZE;
3333 /* Handle each possible type of item, assuming the complete item is
3334 available in store. */
3338 /* Host items exist only if any hosts were marked unusable. Match
3339 up by checking the IP address. */
3342 for (h = addrlist->host_list; h; h = h->next)
3344 if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue;
3352 /* Retry items are sent in a preceding R item for each address. This is
3353 kept separate to keep each message short enough to guarantee it won't
3354 be split in the pipe. Hopefully, in the majority of cases, there won't in
3355 fact be any retry items at all.
3357 The complete set of retry items might include an item to delete a
3358 routing retry if there was a previous routing delay. However, routing
3359 retries are also used when a remote transport identifies an address error.
3360 In that case, there may also be an "add" item for the same key. Arrange
3361 that a "delete" item is dropped in favour of an "add" item. */
3364 if (!addr) goto ADDR_MISMATCH;
3366 DEBUG(D_deliver|D_retry)
3367 debug_printf("reading retry information for %s from subprocess\n",
3370 /* Cut out any "delete" items on the list. */
3372 for (rp = &(addr->retries); (r = *rp); rp = &r->next)
3373 if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */
3375 if ((r->flags & rf_delete) == 0) break; /* It was not "delete" */
3376 *rp = r->next; /* Excise a delete item */
3377 DEBUG(D_deliver|D_retry)
3378 debug_printf(" existing delete item dropped\n");
3381 /* We want to add a delete item only if there is no non-delete item;
3382 however we still have to step ptr through the data. */
3384 if (!r || (*ptr & rf_delete) == 0)
3386 r = store_get(sizeof(retry_item));
3387 r->next = addr->retries;
3390 r->key = string_copy(ptr);
3392 memcpy(&(r->basic_errno), ptr, sizeof(r->basic_errno));
3393 ptr += sizeof(r->basic_errno);
3394 memcpy(&(r->more_errno), ptr, sizeof(r->more_errno));
3395 ptr += sizeof(r->more_errno);
3396 r->message = (*ptr)? string_copy(ptr) : NULL;
3397 DEBUG(D_deliver|D_retry)
3398 debug_printf(" added %s item\n",
3399 ((r->flags & rf_delete) == 0)? "retry" : "delete");
3404 DEBUG(D_deliver|D_retry)
3405 debug_printf(" delete item not added: non-delete item exists\n");
3408 ptr += sizeof(r->basic_errno) + sizeof(r->more_errno);
3414 /* Put the amount of data written into the parlist block */
3417 memcpy(&(p->transport_count), ptr, sizeof(transport_count));
3418 ptr += sizeof(transport_count);
3421 /* Address items are in the order of items on the address chain. We
3422 remember the current address value in case this function is called
3423 several times to empty the pipe in stages. Information about delivery
3424 over TLS is sent in a preceding X item for each address. We don't put
3425 it in with the other info, in order to keep each message short enough to
3426 guarantee it won't be split in the pipe. */
3430 if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */
3434 addr->cipher = NULL;
3435 addr->peerdn = NULL;
3438 addr->cipher = string_copy(ptr);
3441 addr->peerdn = string_copy(ptr);
3446 (void) tls_import_cert(ptr, &addr->peercert);
3448 addr->peercert = NULL;
3453 (void) tls_import_cert(ptr, &addr->ourcert);
3455 addr->ourcert = NULL;
3458 # ifndef DISABLE_OCSP
3460 addr->ocsp = OCSP_NOT_REQ;
3462 addr->ocsp = *ptr - '0';
3468 #endif /*SUPPORT_TLS*/
3470 case 'C': /* client authenticator information */
3474 addr->authenticator = (*ptr)? string_copy(ptr) : NULL;
3477 addr->auth_id = (*ptr)? string_copy(ptr) : NULL;
3480 addr->auth_sndr = (*ptr)? string_copy(ptr) : NULL;
3486 #ifndef DISABLE_PRDR
3488 addr->flags |= af_prdr_used;
3493 addr->flags |= af_chunking_used;
3497 if (!addr) goto ADDR_MISMATCH;
3498 memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware));
3499 ptr += sizeof(addr->dsn_aware);
3500 DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware);
3507 msg = string_sprintf("address count mismatch for data read from pipe "
3508 "for transport process %d for transport %s", pid,
3509 addrlist->transport->driver_name);
3516 #ifdef SUPPORT_SOCKS
3517 case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/
3518 proxy_session = TRUE; /*XXX shouod this be cleared somewhere? */
3523 proxy_local_address = string_copy(ptr);
3525 memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port));
3526 ptr += sizeof(proxy_local_port);
3531 #ifdef EXPERIMENTAL_DSN_INFO
3532 case '1': /* must arrive before A0, and applies to that addr */
3533 /* Two strings: smtp_greeting and helo_response */
3534 addr->smtp_greeting = string_copy(ptr);
3536 addr->helo_response = string_copy(ptr);
3542 addr->transport_return = *ptr++;
3543 addr->special_action = *ptr++;
3544 memcpy(&(addr->basic_errno), ptr, sizeof(addr->basic_errno));
3545 ptr += sizeof(addr->basic_errno);
3546 memcpy(&(addr->more_errno), ptr, sizeof(addr->more_errno));
3547 ptr += sizeof(addr->more_errno);
3548 memcpy(&(addr->flags), ptr, sizeof(addr->flags));
3549 ptr += sizeof(addr->flags);
3550 addr->message = (*ptr)? string_copy(ptr) : NULL;
3552 addr->user_message = (*ptr)? string_copy(ptr) : NULL;
3555 /* Always two strings for host information, followed by the port number and DNSSEC mark */
3559 h = store_get(sizeof(host_item));
3560 h->name = string_copy(ptr);
3562 h->address = string_copy(ptr);
3564 memcpy(&(h->port), ptr, sizeof(h->port));
3565 ptr += sizeof(h->port);
3566 h->dnssec = *ptr == '2' ? DS_YES
3567 : *ptr == '1' ? DS_NO
3570 addr->host_used = h;
3574 /* Finished with this address */
3581 /* Local interface address/port */
3583 if (*ptr) sending_ip_address = string_copy(ptr);
3585 if (*ptr) sending_port = atoi(CS ptr);
3589 /* Z marks the logical end of the data. It is followed by '0' if
3590 continue_transport was NULL at the end of transporting, otherwise '1'.
3591 We need to know when it becomes NULL during a delivery down a passed SMTP
3592 channel so that we don't try to pass anything more down it. Of course, for
3593 most normal messages it will remain NULL all the time. */
3598 continue_transport = NULL;
3599 continue_hostname = NULL;
3602 DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr);
3605 /* Anything else is a disaster. */
3608 msg = string_sprintf("malformed data (%d) read from pipe for transport "
3609 "process %d for transport %s", ptr[-1], pid,
3610 addr->transport->driver_name);
3616 /* The done flag is inspected externally, to determine whether or not to
3617 call the function again when the process finishes. */
3621 /* If the process hadn't finished, and we haven't seen the end of the data
3622 or suffered a disaster, update the rest of the state, and return FALSE to
3623 indicate "not finished". */
3632 /* Close our end of the pipe, to prevent deadlock if the far end is still
3633 pushing stuff into it. */
3638 /* If we have finished without error, but haven't had data for every address,
3639 something is wrong. */
3642 msg = string_sprintf("insufficient address data read from pipe "
3643 "for transport process %d for transport %s", pid,
3644 addr->transport->driver_name);
3646 /* If an error message is set, something has gone wrong in getting back
3647 the delivery data. Put the message into each address and freeze it. */
3650 for (addr = addrlist; addr; addr = addr->next)
3652 addr->transport_return = DEFER;
3653 addr->special_action = SPECIAL_FREEZE;
3654 addr->message = msg;
3657 /* Return TRUE to indicate we have got all we need from this process, even
3658 if it hasn't actually finished yet. */
3665 /*************************************************
3666 * Post-process a set of remote addresses *
3667 *************************************************/
3669 /* Do what has to be done immediately after a remote delivery for each set of
3670 addresses, then re-write the spool if necessary. Note that post_process_one
3671 puts the address on an appropriate queue; hence we must fish off the next
3672 one first. This function is also called if there is a problem with setting
3673 up a subprocess to do a remote delivery in parallel. In this case, the final
3674 argument contains a message, and the action must be forced to DEFER.
3677 addr pointer to chain of address items
3678 logflags flags for logging
3679 msg NULL for normal cases; -> error message for unexpected problems
3680 fallback TRUE if processing fallback hosts
3686 remote_post_process(address_item *addr, int logflags, uschar *msg,
3691 /* If any host addresses were found to be unusable, add them to the unusable
3692 tree so that subsequent deliveries don't try them. */
3694 for (h = addr->host_list; h; h = h->next)
3696 if (h->status >= hstatus_unusable) tree_add_unusable(h);
3698 /* Now handle each address on the chain. The transport has placed '=' or '-'
3699 into the special_action field for each successful delivery. */
3703 address_item *next = addr->next;
3705 /* If msg == NULL (normal processing) and the result is DEFER and we are
3706 processing the main hosts and there are fallback hosts available, put the
3707 address on the list for fallback delivery. */
3709 if ( addr->transport_return == DEFER
3710 && addr->fallback_hosts
3715 addr->host_list = addr->fallback_hosts;
3716 addr->next = addr_fallback;
3717 addr_fallback = addr;
3718 DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address);
3721 /* If msg is set (=> unexpected problem), set it in the address before
3722 doing the ordinary post processing. */
3728 addr->message = msg;
3729 addr->transport_return = DEFER;
3731 (void)post_process_one(addr, addr->transport_return, logflags,
3732 DTYPE_TRANSPORT, addr->special_action);
3740 /* If we have just delivered down a passed SMTP channel, and that was
3741 the last address, the channel will have been closed down. Now that
3742 we have logged that delivery, set continue_sequence to 1 so that
3743 any subsequent deliveries don't get "*" incorrectly logged. */
3745 if (!continue_transport) continue_sequence = 1;
3750 /*************************************************
3751 * Wait for one remote delivery subprocess *
3752 *************************************************/
3754 /* This function is called while doing remote deliveries when either the
3755 maximum number of processes exist and we need one to complete so that another
3756 can be created, or when waiting for the last ones to complete. It must wait for
3757 the completion of one subprocess, empty the control block slot, and return a
3758 pointer to the address chain.
3761 Returns: pointer to the chain of addresses handled by the process;
3762 NULL if no subprocess found - this is an unexpected error
3765 static address_item *
3768 int poffset, status;
3769 address_item *addr, *addrlist;
3772 set_process_info("delivering %s: waiting for a remote delivery subprocess "
3773 "to finish", message_id);
3775 /* Loop until either a subprocess completes, or there are no subprocesses in
3776 existence - in which case give an error return. We cannot proceed just by
3777 waiting for a completion, because a subprocess may have filled up its pipe, and
3778 be waiting for it to be emptied. Therefore, if no processes have finished, we
3779 wait for one of the pipes to acquire some data by calling select(), with a
3780 timeout just in case.
3782 The simple approach is just to iterate after reading data from a ready pipe.
3783 This leads to non-ideal behaviour when the subprocess has written its final Z
3784 item, closed the pipe, and is in the process of exiting (the common case). A
3785 call to waitpid() yields nothing completed, but select() shows the pipe ready -
3786 reading it yields EOF, so you end up with busy-waiting until the subprocess has
3789 To avoid this, if all the data that is needed has been read from a subprocess
3790 after select(), an explicit wait() for it is done. We know that all it is doing
3791 is writing to the pipe and then exiting, so the wait should not be long.
3793 The non-blocking waitpid() is to some extent just insurance; if we could
3794 reliably detect end-of-file on the pipe, we could always know when to do a
3795 blocking wait() for a completed process. However, because some systems use
3796 NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to
3797 use code that functions without the need to recognize EOF.
3799 There's a double loop here just in case we end up with a process that is not in
3800 the list of remote delivery processes. Something has obviously gone wrong if
3801 this is the case. (For example, a process that is incorrectly left over from
3802 routing or local deliveries might be found.) The damage can be minimized by
3803 looping back and looking for another process. If there aren't any, the error
3804 return will happen. */
3806 for (;;) /* Normally we do not repeat this loop */
3808 while ((pid = waitpid(-1, &status, WNOHANG)) <= 0)
3811 fd_set select_pipes;
3812 int maxpipe, readycount;
3814 /* A return value of -1 can mean several things. If errno != ECHILD, it
3815 either means invalid options (which we discount), or that this process was
3816 interrupted by a signal. Just loop to try the waitpid() again.
3818 If errno == ECHILD, waitpid() is telling us that there are no subprocesses
3819 in existence. This should never happen, and is an unexpected error.
3820 However, there is a nasty complication when running under Linux. If "strace
3821 -f" is being used under Linux to trace this process and its children,
3822 subprocesses are "stolen" from their parents and become the children of the
3823 tracing process. A general wait such as the one we've just obeyed returns
3824 as if there are no children while subprocesses are running. Once a
3825 subprocess completes, it is restored to the parent, and waitpid(-1) finds
3826 it. Thanks to Joachim Wieland for finding all this out and suggesting a
3829 This does not happen using "truss" on Solaris, nor (I think) with other
3830 tracing facilities on other OS. It seems to be specific to Linux.
3832 What we do to get round this is to use kill() to see if any of our
3833 subprocesses are still in existence. If kill() gives an OK return, we know
3834 it must be for one of our processes - it can't be for a re-use of the pid,
3835 because if our process had finished, waitpid() would have found it. If any
3836 of our subprocesses are in existence, we proceed to use select() as if
3837 waitpid() had returned zero. I think this is safe. */
3841 if (errno != ECHILD) continue; /* Repeats the waitpid() */
3844 debug_printf("waitpid() returned -1/ECHILD: checking explicitly "
3845 "for process existence\n");
3847 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3849 if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0)
3851 DEBUG(D_deliver) debug_printf("process %d still exists: assume "
3852 "stolen by strace\n", (int)pid);
3853 break; /* With poffset set */
3857 if (poffset >= remote_max_parallel)
3859 DEBUG(D_deliver) debug_printf("*** no delivery children found\n");
3860 return NULL; /* This is the error return */
3864 /* A pid value greater than 0 breaks the "while" loop. A negative value has
3865 been handled above. A return value of zero means that there is at least one
3866 subprocess, but there are no completed subprocesses. See if any pipes are
3867 ready with any data for reading. */
3869 DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n");
3872 FD_ZERO(&select_pipes);
3873 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3875 if (parlist[poffset].pid != 0)
3877 int fd = parlist[poffset].fd;
3878 FD_SET(fd, &select_pipes);
3879 if (fd > maxpipe) maxpipe = fd;
3883 /* Stick in a 60-second timeout, just in case. */
3888 readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes,
3891 /* Scan through the pipes and read any that are ready; use the count
3892 returned by select() to stop when there are no more. Select() can return
3893 with no processes (e.g. if interrupted). This shouldn't matter.
3895 If par_read_pipe() returns TRUE, it means that either the terminating Z was
3896 read, or there was a disaster. In either case, we are finished with this
3897 process. Do an explicit wait() for the process and break the main loop if
3900 It turns out that we have to deal with the case of an interrupted system
3901 call, which can happen on some operating systems if the signal handling is
3902 set up to do that by default. */
3905 readycount > 0 && poffset < remote_max_parallel;
3908 if ( (pid = parlist[poffset].pid) != 0
3909 && FD_ISSET(parlist[poffset].fd, &select_pipes)
3913 if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */
3915 for (;;) /* Loop for signals */
3917 pid_t endedpid = waitpid(pid, &status, 0);
3918 if (endedpid == pid) goto PROCESS_DONE;
3919 if (endedpid != (pid_t)(-1) || errno != EINTR)
3920 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return "
3921 "%d (errno = %d) from waitpid() for process %d",
3922 (int)endedpid, errno, (int)pid);
3928 /* Now go back and look for a completed subprocess again. */
3931 /* A completed process was detected by the non-blocking waitpid(). Find the
3932 data block that corresponds to this subprocess. */
3934 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3935 if (pid == parlist[poffset].pid) break;
3937 /* Found the data block; this is a known remote delivery process. We don't
3938 need to repeat the outer loop. This should be what normally happens. */
3940 if (poffset < remote_max_parallel) break;
3942 /* This situation is an error, but it's probably better to carry on looking
3943 for another process than to give up (as we used to do). */
3945 log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote "
3946 "transport process list", pid);
3947 } /* End of the "for" loop */
3949 /* Come here when all the data was completely read after a select(), and
3950 the process in pid has been wait()ed for. */
3957 debug_printf("remote delivery process %d ended\n", (int)pid);
3959 debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid,
3963 set_process_info("delivering %s", message_id);
3965 /* Get the chain of processed addresses */
3967 addrlist = parlist[poffset].addrlist;
3969 /* If the process did not finish cleanly, record an error and freeze (except
3970 for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed,
3971 in case the delivery did actually happen. */
3973 if ((status & 0xffff) != 0)
3976 int msb = (status >> 8) & 255;
3977 int lsb = status & 255;
3978 int code = (msb == 0)? (lsb & 0x7f) : msb;
3980 msg = string_sprintf("%s transport process returned non-zero status 0x%04x: "
3982 addrlist->transport->driver_name,
3984 (msb == 0)? "terminated by signal" : "exit code",
3987 if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT))
3988 addrlist->special_action = SPECIAL_FREEZE;
3990 for (addr = addrlist; addr; addr = addr->next)
3992 addr->transport_return = DEFER;
3993 addr->message = msg;
3996 remove_journal = FALSE;
3999 /* Else complete reading the pipe to get the result of the delivery, if all
4000 the data has not yet been obtained. */
4002 else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE);
4004 /* Put the data count and return path into globals, mark the data slot unused,
4005 decrement the count of subprocesses, and return the address chain. */
4007 transport_count = parlist[poffset].transport_count;
4008 used_return_path = parlist[poffset].return_path;
4009 parlist[poffset].pid = 0;
4016 /*************************************************
4017 * Wait for subprocesses and post-process *
4018 *************************************************/
4020 /* This function waits for subprocesses until the number that are still running
4021 is below a given threshold. For each complete subprocess, the addresses are
4022 post-processed. If we can't find a running process, there is some shambles.
4023 Better not bomb out, as that might lead to multiple copies of the message. Just
4024 log and proceed as if all done.
4027 max maximum number of subprocesses to leave running
4028 fallback TRUE if processing fallback hosts
4034 par_reduce(int max, BOOL fallback)
4036 while (parcount > max)
4038 address_item *doneaddr = par_wait();
4041 log_write(0, LOG_MAIN|LOG_PANIC,
4042 "remote delivery process count got out of step");
4047 transport_instance * tp = doneaddr->transport;
4048 if (tp->max_parallel)
4049 enq_end(string_sprintf("tpt-serialize-%s", tp->name));
4051 remote_post_process(doneaddr, LOG_MAIN, NULL, fallback);
4060 rmt_dlv_checked_write(int fd, char id, char subid, void * buf, int size)
4062 uschar writebuffer[PIPE_HEADER_SIZE + BIG_BUFFER_SIZE];
4066 /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */
4067 /* complain to log if someone tries with buffer sizes we can't handle*/
4071 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
4072 "Failed writing transport result to pipe: can't handle buffers > 99999 bytes. truncating!\n");
4076 /* to keep the write() atomic we build header in writebuffer and copy buf behind */
4077 /* two write() calls would increase the complexity of reading from pipe */
4079 /* convert size to human readable string prepended by id and subid */
4080 header_length = snprintf(CS writebuffer, PIPE_HEADER_SIZE+1, "%c%c%05d", id, subid, size);
4081 if (header_length != PIPE_HEADER_SIZE)
4083 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n");
4084 writebuffer[0] = '\0';
4087 DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%d,final:%s\n",
4088 id, subid, size, writebuffer);
4090 if (buf && size > 0)
4091 memcpy(writebuffer + PIPE_HEADER_SIZE, buf, size);
4093 size += PIPE_HEADER_SIZE;
4094 if ((ret = write(fd, writebuffer, size)) != size)
4095 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed writing transport result to pipe: %s\n",
4096 ret == -1 ? strerror(errno) : "short write");
4099 /*************************************************
4100 * Do remote deliveries *
4101 *************************************************/
4103 /* This function is called to process the addresses in addr_remote. We must
4104 pick off the queue all addresses that have the same transport, remote
4105 destination, and errors address, and hand them to the transport in one go,
4106 subject to some configured limitations. If this is a run to continue delivering
4107 to an existing delivery channel, skip all but those addresses that can go to
4108 that channel. The skipped addresses just get deferred.
4110 If mua_wrapper is set, all addresses must be able to be sent in a single
4111 transaction. If not, this function yields FALSE.
4113 In Exim 4, remote deliveries are always done in separate processes, even
4114 if remote_max_parallel = 1 or if there's only one delivery to do. The reason
4115 is so that the base process can retain privilege. This makes the
4116 implementation of fallback transports feasible (though not initially done.)
4118 We create up to the configured number of subprocesses, each of which passes
4119 back the delivery state via a pipe. (However, when sending down an existing
4120 connection, remote_max_parallel is forced to 1.)
4123 fallback TRUE if processing fallback hosts
4125 Returns: TRUE normally
4126 FALSE if mua_wrapper is set and the addresses cannot all be sent
4131 do_remote_deliveries(BOOL fallback)
4137 parcount = 0; /* Number of executing subprocesses */
4139 /* When sending down an existing channel, only do one delivery at a time.
4140 We use a local variable (parmax) to hold the maximum number of processes;
4141 this gets reduced from remote_max_parallel if we can't create enough pipes. */
4143 if (continue_transport) remote_max_parallel = 1;
4144 parmax = remote_max_parallel;
4146 /* If the data for keeping a list of processes hasn't yet been
4151 parlist = store_get(remote_max_parallel * sizeof(pardata));
4152 for (poffset = 0; poffset < remote_max_parallel; poffset++)
4153 parlist[poffset].pid = 0;
4156 /* Now loop for each remote delivery */
4158 for (delivery_count = 0; addr_remote; delivery_count++)
4164 int address_count = 1;
4165 int address_count_max;
4167 BOOL use_initgroups;
4168 BOOL pipe_done = FALSE;
4169 transport_instance *tp;
4170 address_item **anchor = &addr_remote;
4171 address_item *addr = addr_remote;
4172 address_item *last = addr;
4175 uschar * serialize_key = NULL;
4177 /* Pull the first address right off the list. */
4179 addr_remote = addr->next;
4182 DEBUG(D_deliver|D_transport)
4183 debug_printf("--------> %s <--------\n", addr->address);
4185 /* If no transport has been set, there has been a big screw-up somewhere. */
4187 if (!(tp = addr->transport))
4189 disable_logging = FALSE; /* Jic */
4190 panicmsg = US"No transport set by router";
4191 goto panic_continue;
4194 /* Check that this base address hasn't previously been delivered to this
4195 transport. The check is necessary at this point to handle homonymic addresses
4196 correctly in cases where the pattern of redirection changes between delivery
4197 attempts. Non-homonymic previous delivery is detected earlier, at routing
4200 if (previously_transported(addr, FALSE)) continue;
4202 /* Force failure if the message is too big. */
4204 if (tp->message_size_limit)
4206 int rc = check_message_size(tp, addr);
4209 addr->transport_return = rc;
4210 remote_post_process(addr, LOG_MAIN, NULL, fallback);
4215 /* Get the flag which specifies whether the transport can handle different
4216 domains that nevertheless resolve to the same set of hosts. If it needs
4217 expanding, get variables set: $address_data, $domain_data, $localpart_data,
4218 $host, $host_address, $host_port. */
4219 if (tp->expand_multi_domain)
4220 deliver_set_expansions(addr);
4222 if (exp_bool(addr, US"transport", tp->name, D_transport,
4223 US"multi_domain", tp->multi_domain, tp->expand_multi_domain,
4224 &multi_domain) != OK)
4226 deliver_set_expansions(NULL);
4227 panicmsg = addr->message;
4228 goto panic_continue;
4231 /* Get the maximum it can handle in one envelope, with zero meaning
4232 unlimited, which is forced for the MUA wrapper case. */
4234 address_count_max = tp->max_addresses;
4235 if (address_count_max == 0 || mua_wrapper) address_count_max = 999999;
4238 /************************************************************************/
4239 /***** This is slightly experimental code, but should be safe. *****/
4241 /* The address_count_max value is the maximum number of addresses that the
4242 transport can send in one envelope. However, the transport must be capable of
4243 dealing with any number of addresses. If the number it gets exceeds its
4244 envelope limitation, it must send multiple copies of the message. This can be
4245 done over a single connection for SMTP, so uses less resources than making
4246 multiple connections. On the other hand, if remote_max_parallel is greater
4247 than one, it is perhaps a good idea to use parallel processing to move the
4248 message faster, even if that results in multiple simultaneous connections to
4251 How can we come to some compromise between these two ideals? What we do is to
4252 limit the number of addresses passed to a single instance of a transport to
4253 the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total
4254 number of addresses routed to remote transports divided by
4255 remote_max_parallel. For example, if the message has 100 remote recipients,
4256 remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at
4257 once. But if rcpt_max is 100, we could send up to 100.
4259 Of course, not all the remotely addresses in a message are going to go to the
4260 same set of hosts (except in smarthost configurations), so this is just a
4261 heuristic way of dividing up the work.
4263 Furthermore (1), because this may not be wanted in some cases, and also to
4264 cope with really pathological cases, there is also a limit to the number of
4265 messages that are sent over one connection. This is the same limit that is
4266 used when sending several different messages over the same connection.
4267 Continue_sequence is set when in this situation, to the number sent so
4268 far, including this message.
4270 Furthermore (2), when somebody explicitly sets the maximum value to 1, it
4271 is probably because they are using VERP, in which case they want to pass only
4272 one address at a time to the transport, in order to be able to use
4273 $local_part and $domain in constructing a new return path. We could test for
4274 the use of these variables, but as it is so likely they will be used when the
4275 maximum is 1, we don't bother. Just leave the value alone. */
4277 if ( address_count_max != 1
4278 && address_count_max < remote_delivery_count/remote_max_parallel
4281 int new_max = remote_delivery_count/remote_max_parallel;
4282 int message_max = tp->connection_max_messages;
4283 if (connection_max_messages >= 0) message_max = connection_max_messages;
4284 message_max -= continue_sequence - 1;
4285 if (message_max > 0 && new_max > address_count_max * message_max)
4286 new_max = address_count_max * message_max;
4287 address_count_max = new_max;
4290 /************************************************************************/
4293 /* Pick off all addresses which have the same transport, errors address,
4294 destination, and extra headers. In some cases they point to the same host
4295 list, but we also need to check for identical host lists generated from
4296 entirely different domains. The host list pointers can be NULL in the case
4297 where the hosts are defined in the transport. There is also a configured
4298 maximum limit of addresses that can be handled at once (see comments above
4299 for how it is computed).
4300 If the transport does not handle multiple domains, enforce that also,
4301 and if it might need a per-address check for this, re-evaluate it.
4304 while ((next = *anchor) && address_count < address_count_max)
4307 if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0)
4308 && tp == next->transport
4309 && same_hosts(next->host_list, addr->host_list)
4310 && same_strings(next->prop.errors_address, addr->prop.errors_address)
4311 && same_headers(next->prop.extra_headers, addr->prop.extra_headers)
4312 && same_ugid(tp, next, addr)
4313 && ( next->prop.remove_headers == addr->prop.remove_headers
4314 || ( next->prop.remove_headers
4315 && addr->prop.remove_headers
4316 && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0
4320 !tp->expand_multi_domain || (deliver_set_expansions(next), 1),
4322 US"transport", next->transport->name, D_transport,
4323 US"multi_domain", next->transport->multi_domain,
4324 next->transport->expand_multi_domain, &md) == OK
4329 *anchor = next->next;
4331 next->first = addr; /* remember top one (for retry processing) */
4336 else anchor = &(next->next);
4337 deliver_set_expansions(NULL);
4340 /* If we are acting as an MUA wrapper, all addresses must go in a single
4341 transaction. If not, put them back on the chain and yield FALSE. */
4343 if (mua_wrapper && addr_remote)
4345 last->next = addr_remote;
4350 /* If the transport is limited for parallellism, enforce that here.
4351 The hints DB entry is decremented in par_reduce(), when we reap the
4352 transport process. */
4354 if (tpt_parallel_check(tp, addr, &serialize_key))
4355 if ((panicmsg = expand_string_message))
4356 goto panic_continue;
4358 continue; /* Loop for the next set of addresses. */
4360 /* Set up the expansion variables for this set of addresses */
4362 deliver_set_expansions(addr);
4364 /* Ensure any transport-set auth info is fresh */
4365 addr->authenticator = addr->auth_id = addr->auth_sndr = NULL;
4367 /* Compute the return path, expanding a new one if required. The old one
4368 must be set first, as it might be referred to in the expansion. */
4370 if(addr->prop.errors_address)
4371 return_path = addr->prop.errors_address;
4372 #ifdef EXPERIMENTAL_SRS
4373 else if(addr->prop.srs_sender)
4374 return_path = addr->prop.srs_sender;
4377 return_path = sender_address;
4379 if (tp->return_path)
4381 uschar *new_return_path = expand_string(tp->return_path);
4382 if (new_return_path)
4383 return_path = new_return_path;
4384 else if (!expand_string_forcedfail)
4386 panicmsg = string_sprintf("Failed to expand return path \"%s\": %s",
4387 tp->return_path, expand_string_message);
4392 /* Find the uid, gid, and use_initgroups setting for this transport. Failure
4393 logs and sets up error messages, so we just post-process and continue with
4394 the next address. */
4396 if (!findugid(addr, tp, &uid, &gid, &use_initgroups))
4402 /* If this transport has a setup function, call it now so that it gets
4403 run in this process and not in any subprocess. That way, the results of
4404 any setup that are retained by the transport can be reusable. One of the
4405 things the setup does is to set the fallback host lists in the addresses.
4406 That is why it is called at this point, before the continue delivery
4407 processing, because that might use the fallback hosts. */
4410 (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL));
4412 /* If this is a run to continue delivery down an already-established
4413 channel, check that this set of addresses matches the transport and
4414 the channel. If it does not, defer the addresses. If a host list exists,
4415 we must check that the continue host is on the list. Otherwise, the
4416 host is set in the transport. */
4418 continue_more = FALSE; /* In case got set for the last lot */
4419 if (continue_transport)
4421 BOOL ok = Ustrcmp(continue_transport, tp->name) == 0;
4422 if (ok && addr->host_list)
4426 for (h = addr->host_list; h; h = h->next)
4427 if (Ustrcmp(h->name, continue_hostname) == 0)
4428 /*XXX should also check port here */
4429 { ok = TRUE; break; }
4432 /* Addresses not suitable; defer or queue for fallback hosts (which
4433 might be the continue host) and skip to next address. */
4437 DEBUG(D_deliver) debug_printf("not suitable for continue_transport\n");
4438 if (serialize_key) enq_end(serialize_key);
4440 if (addr->fallback_hosts && !fallback)
4442 for (next = addr; ; next = next->next)
4444 next->host_list = next->fallback_hosts;
4445 DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address);
4446 if (!next->next) break;
4448 next->next = addr_fallback;
4449 addr_fallback = addr;
4454 for (next = addr; ; next = next->next)
4456 DEBUG(D_deliver) debug_printf(" %s to def list\n", next->address);
4457 if (!next->next) break;
4459 next->next = addr_defer;
4466 /* Set a flag indicating whether there are further addresses that list
4467 the continued host. This tells the transport to leave the channel open,
4468 but not to pass it to another delivery process. */
4470 for (next = addr_remote; next; next = next->next)
4473 for (h = next->host_list; h; h = h->next)
4474 if (Ustrcmp(h->name, continue_hostname) == 0)
4475 { continue_more = TRUE; break; }
4479 /* The transports set up the process info themselves as they may connect
4480 to more than one remote machine. They also have to set up the filter
4481 arguments, if required, so that the host name and address are available
4484 transport_filter_argv = NULL;
4486 /* Create the pipe for inter-process communication. If pipe creation
4487 fails, it is probably because the value of remote_max_parallel is so
4488 large that too many file descriptors for pipes have been created. Arrange
4489 to wait for a process to finish, and then try again. If we still can't
4490 create a pipe when all processes have finished, break the retry loop. */
4494 if (pipe(pfd) == 0) pipe_done = TRUE;
4495 else if (parcount > 0) parmax = parcount;
4498 /* We need to make the reading end of the pipe non-blocking. There are
4499 two different options for this. Exim is cunningly (I hope!) coded so
4500 that it can use either of them, though it prefers O_NONBLOCK, which
4501 distinguishes between EOF and no-more-data. */
4504 (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK);
4506 (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY);
4509 /* If the maximum number of subprocesses already exist, wait for a process
4510 to finish. If we ran out of file descriptors, parmax will have been reduced
4511 from its initial value of remote_max_parallel. */
4513 par_reduce(parmax - 1, fallback);
4516 /* If we failed to create a pipe and there were no processes to wait
4517 for, we have to give up on this one. Do this outside the above loop
4518 so that we can continue the main loop. */
4522 panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno));
4526 /* Find a free slot in the pardata list. Must do this after the possible
4527 waiting for processes to finish, because a terminating process will free
4530 for (poffset = 0; poffset < remote_max_parallel; poffset++)
4531 if (parlist[poffset].pid == 0)
4534 /* If there isn't one, there has been a horrible disaster. */
4536 if (poffset >= remote_max_parallel)
4538 (void)close(pfd[pipe_write]);
4539 (void)close(pfd[pipe_read]);
4540 panicmsg = US"Unexpectedly no free subprocess slot";
4544 /* Now fork a subprocess to do the remote delivery, but before doing so,
4545 ensure that any cached resourses are released so as not to interfere with
4546 what happens in the subprocess. */
4550 if ((pid = fork()) == 0)
4552 int fd = pfd[pipe_write];
4555 /* Setting this global in the subprocess means we need never clear it */
4556 transport_name = tp->name;
4558 /* There are weird circumstances in which logging is disabled */
4559 disable_logging = tp->disable_logging;
4561 /* Show pids on debug output if parallelism possible */
4563 if (parmax > 1 && (parcount > 0 || addr_remote))
4565 DEBUG(D_any|D_v) debug_selector |= D_pid;
4566 DEBUG(D_deliver) debug_printf("Remote delivery process started\n");
4569 /* Reset the random number generator, so different processes don't all
4570 have the same sequence. In the test harness we want different, but
4571 predictable settings for each delivery process, so do something explicit
4572 here rather they rely on the fixed reset in the random number function. */
4574 random_seed = running_in_test_harness? 42 + 2*delivery_count : 0;
4576 /* Set close-on-exec on the pipe so that it doesn't get passed on to
4577 a new process that may be forked to do another delivery down the same
4580 (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
4582 /* Close open file descriptors for the pipes of other processes
4583 that are running in parallel. */
4585 for (poffset = 0; poffset < remote_max_parallel; poffset++)
4586 if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd);
4588 /* This process has inherited a copy of the file descriptor
4589 for the data file, but its file pointer is shared with all the
4590 other processes running in parallel. Therefore, we have to re-open
4591 the file in order to get a new file descriptor with its own
4592 file pointer. We don't need to lock it, as the lock is held by
4593 the parent process. There doesn't seem to be any way of doing
4594 a dup-with-new-file-pointer. */
4596 (void)close(deliver_datafile);
4598 uschar * fname = spool_fname(US"input", message_subdir, message_id, US"-D");
4600 if ((deliver_datafile = Uopen(fname, O_RDWR | O_APPEND, 0)) < 0)
4601 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote "
4602 "parallel delivery: %s", fname, strerror(errno));
4605 /* Set the close-on-exec flag */
4607 (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) |
4610 /* Set the uid/gid of this process; bombs out on failure. */
4612 exim_setugid(uid, gid, use_initgroups,
4613 string_sprintf("remote delivery to %s with transport=%s",
4614 addr->address, tp->name));
4616 /* Close the unwanted half of this process' pipe, set the process state,
4617 and run the transport. Afterwards, transport_count will contain the number
4618 of bytes written. */
4620 (void)close(pfd[pipe_read]);
4621 set_process_info("delivering %s using %s", message_id, tp->name);
4622 debug_print_string(tp->debug_string);
4623 if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr);
4625 set_process_info("delivering %s (just run %s for %s%s in subprocess)",
4626 message_id, tp->name, addr->address, addr->next ? ", ..." : "");
4628 /* Ensure any cached resources that we used are now released */
4632 /* Pass the result back down the pipe. This is a lot more information
4633 than is needed for a local delivery. We have to send back the error
4634 status for each address, the usability status for each host that is
4635 flagged as unusable, and all the retry items. When TLS is in use, we
4636 send also the cipher and peerdn information. Each type of information
4637 is flagged by an identifying byte, and is then in a fixed format (with
4638 strings terminated by zeros), and there is a final terminator at the
4639 end. The host information and retry information is all attached to
4640 the first address, so that gets sent at the start. */
4642 /* Host unusability information: for most success cases this will
4645 for (h = addr->host_list; h; h = h->next)
4647 if (!h->address || h->status < hstatus_unusable) continue;
4648 sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address);
4649 rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3);
4652 /* The number of bytes written. This is the same for each address. Even
4653 if we sent several copies of the message down the same connection, the
4654 size of each one is the same, and it's that value we have got because
4655 transport_count gets reset before calling transport_write_message(). */
4657 memcpy(big_buffer, &transport_count, sizeof(transport_count));
4658 rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count));
4660 /* Information about what happened to each address. Four item types are
4661 used: an optional 'X' item first, for TLS information, then an optional "C"
4662 item for any client-auth info followed by 'R' items for any retry settings,
4663 and finally an 'A' item for the remaining data. */
4665 for(; addr; addr = addr->next)
4670 /* The certificate verification status goes into the flags */
4671 if (tls_out.certificate_verified) setflag(addr, af_cert_verified);
4672 #ifdef EXPERIMENTAL_DANE
4673 if (tls_out.dane_verified) setflag(addr, af_dane_verified);
4676 /* Use an X item only if there's something to send */
4680 ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1;
4685 ptr += sprintf(CS ptr, "%.512s", addr->peerdn);
4689 rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer);
4694 if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert))
4698 rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer);
4703 if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert))
4707 rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer);
4709 # ifndef DISABLE_OCSP
4710 if (addr->ocsp > OCSP_NOT_REQ)
4712 ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1;
4713 rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer);
4716 #endif /*SUPPORT_TLS*/
4718 if (client_authenticator)
4720 ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1;
4721 rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer);
4723 if (client_authenticated_id)
4725 ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1;
4726 rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer);
4728 if (client_authenticated_sender)
4730 ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1;
4731 rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer);
4734 #ifndef DISABLE_PRDR
4735 if (addr->flags & af_prdr_used)
4736 rmt_dlv_checked_write(fd, 'P', '0', NULL, 0);
4739 if (addr->flags & af_chunking_used)
4740 rmt_dlv_checked_write(fd, 'K', '0', NULL, 0);
4742 memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware));
4743 rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware));
4744 DEBUG(D_deliver) debug_printf("DSN write: addr->dsn_aware = %d\n", addr->dsn_aware);
4746 /* Retry information: for most success cases this will be null. */
4748 for (r = addr->retries; r; r = r->next)
4750 sprintf(CS big_buffer, "%c%.500s", r->flags, r->key);
4751 ptr = big_buffer + Ustrlen(big_buffer+2) + 3;
4752 memcpy(ptr, &(r->basic_errno), sizeof(r->basic_errno));
4753 ptr += sizeof(r->basic_errno);
4754 memcpy(ptr, &(r->more_errno), sizeof(r->more_errno));
4755 ptr += sizeof(r->more_errno);
4756 if (!r->message) *ptr++ = 0; else
4758 sprintf(CS ptr, "%.512s", r->message);
4761 rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer);
4764 #ifdef SUPPORT_SOCKS
4765 if (LOGGING(proxy) && proxy_session)
4768 if (proxy_local_address)
4770 DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address);
4771 ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1;
4772 DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port);
4773 memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port));
4774 ptr += sizeof(proxy_local_port);
4778 rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer);
4782 #ifdef EXPERIMENTAL_DSN_INFO
4783 /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */
4784 if (addr->smtp_greeting)
4786 DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting);
4787 ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1;
4788 if (addr->helo_response)
4790 DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response);
4791 ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1;
4795 rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer);
4799 /* The rest of the information goes in an 'A0' item. */
4801 sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action);
4802 ptr = big_buffer + 2;
4803 memcpy(ptr, &(addr->basic_errno), sizeof(addr->basic_errno));
4804 ptr += sizeof(addr->basic_errno);
4805 memcpy(ptr, &(addr->more_errno), sizeof(addr->more_errno));
4806 ptr += sizeof(addr->more_errno);
4807 memcpy(ptr, &(addr->flags), sizeof(addr->flags));
4808 ptr += sizeof(addr->flags);
4810 if (!addr->message) *ptr++ = 0; else
4811 ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1;
4813 if (!addr->user_message) *ptr++ = 0; else
4814 ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1;
4816 if (!addr->host_used) *ptr++ = 0; else
4818 ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1;
4819 ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1;
4820 memcpy(ptr, &(addr->host_used->port), sizeof(addr->host_used->port));
4821 ptr += sizeof(addr->host_used->port);
4823 /* DNS lookup status */
4824 *ptr++ = addr->host_used->dnssec==DS_YES ? '2'
4825 : addr->host_used->dnssec==DS_NO ? '1' : '0';
4828 rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer);
4831 /* Local interface address/port */
4832 #ifdef EXPERIMENTAL_DSN_INFO
4833 if (sending_ip_address)
4835 if (LOGGING(incoming_interface) && sending_ip_address)
4839 ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1;
4840 ptr += sprintf(CS ptr, "%d", sending_port) + 1;
4841 rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer);
4844 /* Add termination flag, close the pipe, and that's it. The character
4845 after 'Z' indicates whether continue_transport is now NULL or not.
4846 A change from non-NULL to NULL indicates a problem with a continuing
4849 big_buffer[0] = continue_transport ? '1' : '0';
4850 rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1);
4855 /* Back in the mainline: close the unwanted half of the pipe. */
4857 (void)close(pfd[pipe_write]);
4859 /* Fork failed; defer with error message */
4863 (void)close(pfd[pipe_read]);
4864 panicmsg = string_sprintf("fork failed for remote delivery to %s: %s",
4865 addr->domain, strerror(errno));
4869 /* Fork succeeded; increment the count, and remember relevant data for
4870 when the process finishes. */
4873 parlist[poffset].addrlist = parlist[poffset].addr = addr;
4874 parlist[poffset].pid = pid;
4875 parlist[poffset].fd = pfd[pipe_read];
4876 parlist[poffset].done = FALSE;
4877 parlist[poffset].msg = NULL;
4878 parlist[poffset].return_path = return_path;
4880 /* If the process we've just started is sending a message down an existing
4881 channel, wait for it now. This ensures that only one such process runs at
4882 once, whatever the value of remote_max parallel. Otherwise, we might try to
4883 send two or more messages simultaneously down the same channel. This could
4884 happen if there are different domains that include the same host in otherwise
4885 different host lists.
4887 Also, if the transport closes down the channel, this information gets back
4888 (continue_transport gets set to NULL) before we consider any other addresses
4891 if (continue_transport) par_reduce(0, fallback);
4893 /* Otherwise, if we are running in the test harness, wait a bit, to let the
4894 newly created process get going before we create another process. This should
4895 ensure repeatability in the tests. We only need to wait a tad. */
4897 else if (running_in_test_harness) millisleep(500);
4902 if (serialize_key) enq_end(serialize_key);
4904 remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback);
4908 /* Reached the end of the list of addresses. Wait for all the subprocesses that
4909 are still running and post-process their addresses. */
4911 par_reduce(0, fallback);
4918 /*************************************************
4919 * Split an address into local part and domain *
4920 *************************************************/
4922 /* This function initializes an address for routing by splitting it up into a
4923 local part and a domain. The local part is set up twice - once in its original
4924 casing, and once in lower case, and it is dequoted. We also do the "percent
4925 hack" for configured domains. This may lead to a DEFER result if a lookup
4926 defers. When a percent-hacking takes place, we insert a copy of the original
4927 address as a new parent of this address, as if we have had a redirection.
4930 addr points to an addr_item block containing the address
4933 DEFER - could not determine if domain is %-hackable
4937 deliver_split_address(address_item * addr)
4939 uschar * address = addr->address;
4944 if (!(domain = Ustrrchr(address, '@')))
4945 return DEFER; /* should always have a domain, but just in case... */
4947 len = domain - address;
4948 addr->domain = string_copylc(domain+1); /* Domains are always caseless */
4950 /* The implication in the RFCs (though I can't say I've seen it spelled out
4951 explicitly) is that quoting should be removed from local parts at the point
4952 where they are locally interpreted. [The new draft "821" is more explicit on
4953 this, Jan 1999.] We know the syntax is valid, so this can be done by simply
4954 removing quoting backslashes and any unquoted doublequotes. */
4956 t = addr->cc_local_part = store_get(len+1);
4960 if (c == '\"') continue;
4970 /* We do the percent hack only for those domains that are listed in
4971 percent_hack_domains. A loop is required, to copy with multiple %-hacks. */
4973 if (percent_hack_domains)
4976 uschar *new_address = NULL;
4977 uschar *local_part = addr->cc_local_part;
4979 deliver_domain = addr->domain; /* set $domain */
4981 while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0,
4982 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
4984 && (t = Ustrrchr(local_part, '%')) != NULL
4987 new_address = string_copy(local_part);
4988 new_address[t - local_part] = '@';
4989 deliver_domain = string_copylc(t+1);
4990 local_part = string_copyn(local_part, t - local_part);
4993 if (rc == DEFER) return DEFER; /* lookup deferred */
4995 /* If hackery happened, set up new parent and alter the current address. */
4999 address_item *new_parent = store_get(sizeof(address_item));
5000 *new_parent = *addr;
5001 addr->parent = new_parent;
5002 addr->address = new_address;
5003 addr->unique = string_copy(new_address);
5004 addr->domain = deliver_domain;
5005 addr->cc_local_part = local_part;
5006 DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n",
5011 /* Create the lowercased version of the final local part, and make that the
5012 default one to be used. */
5014 addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part);
5021 /*************************************************
5022 * Get next error message text *
5023 *************************************************/
5025 /* If f is not NULL, read the next "paragraph", from a customized error message
5026 text file, terminated by a line containing ****, and expand it.
5029 f NULL or a file to read from
5030 which string indicating which string (for errors)
5032 Returns: NULL or an expanded string
5036 next_emf(FILE *f, uschar *which)
5040 uschar *para, *yield;
5043 if (!f) return NULL;
5045 if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0)
5048 para = store_get(size);
5051 para = string_cat(para, &size, &ptr, buffer);
5052 if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0)
5057 if ((yield = expand_string(para)))
5060 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from "
5061 "bounce_message_file or warn_message_file (%s): %s", which,
5062 expand_string_message);
5069 /*************************************************
5070 * Close down a passed transport channel *
5071 *************************************************/
5073 /* This function is called when a passed transport channel cannot be used.
5074 It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED
5075 so that the function call can be the argument of a "return" statement.
5078 Returns: DELIVER_NOT_ATTEMPTED
5082 continue_closedown(void)
5084 if (continue_transport)
5086 transport_instance *t;
5087 for (t = transports; t; t = t->next)
5088 if (Ustrcmp(t->name, continue_transport) == 0)
5090 if (t->info->closedown) (t->info->closedown)(t);
5094 return DELIVER_NOT_ATTEMPTED;
5100 /*************************************************
5101 * Print address information *
5102 *************************************************/
5104 /* This function is called to output an address, or information about an
5105 address, for bounce or defer messages. If the hide_child flag is set, all we
5106 output is the original ancestor address.
5109 addr points to the address
5110 f the FILE to print to
5111 si an initial string
5112 sc a continuation string for before "generated"
5115 Returns: TRUE if the address is not hidden
5119 print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc,
5123 uschar *printed = US"";
5124 address_item *ancestor = addr;
5125 while (ancestor->parent) ancestor = ancestor->parent;
5127 fprintf(f, "%s", CS si);
5129 if (addr->parent && testflag(addr, af_hide_child))
5131 printed = US"an undisclosed address";
5134 else if (!testflag(addr, af_pfr) || !addr->parent)
5135 printed = addr->address;
5139 uschar *s = addr->address;
5142 if (addr->address[0] == '>') { ss = US"mail"; s++; }
5143 else if (addr->address[0] == '|') ss = US"pipe";
5146 fprintf(f, "%s to %s%sgenerated by ", ss, s, sc);
5147 printed = addr->parent->address;
5150 fprintf(f, "%s", CS string_printing(printed));
5152 if (ancestor != addr)
5154 uschar *original = ancestor->onetime_parent;
5155 if (!original) original= ancestor->address;
5156 if (strcmpic(original, printed) != 0)
5157 fprintf(f, "%s(%sgenerated from %s)", sc,
5158 ancestor != addr->parent ? "ultimately " : "",
5159 string_printing(original));
5162 if (addr->host_used)
5163 fprintf(f, "\n host %s [%s]",
5164 addr->host_used->name, addr->host_used->address);
5166 fprintf(f, "%s", CS se);
5174 /*************************************************
5175 * Print error for an address *
5176 *************************************************/
5178 /* This function is called to print the error information out of an address for
5179 a bounce or a warning message. It tries to format the message reasonably by
5180 introducing newlines. All lines are indented by 4; the initial printing
5181 position must be set before calling.
5183 This function used always to print the error. Nowadays we want to restrict it
5184 to cases such as LMTP/SMTP errors from a remote host, and errors from :fail:
5185 and filter "fail". We no longer pass other information willy-nilly in bounce
5186 and warning messages. Text in user_message is always output; text in message
5187 only if the af_pass_message flag is set.
5191 f the FILE to print on
5198 print_address_error(address_item *addr, FILE *f, uschar *t)
5200 int count = Ustrlen(t);
5201 uschar *s = testflag(addr, af_pass_message)? addr->message : NULL;
5203 if (!s && !(s = addr->user_message))
5206 fprintf(f, "\n %s", t);
5209 if (*s == '\\' && s[1] == 'n')
5219 if (*s++ == ':' && isspace(*s) && count > 45)
5221 fprintf(f, "\n "); /* sic (because space follows) */
5228 /***********************************************************
5229 * Print Diagnostic-Code for an address *
5230 ************************************************************/
5232 /* This function is called to print the error information out of an address for
5233 a bounce or a warning message. It tries to format the message reasonably as
5234 required by RFC 3461 by adding a space after each newline
5236 it uses the same logic as print_address_error() above. if af_pass_message is true
5237 and addr->message is set it uses the remote host answer. if not addr->user_message
5238 is used instead if available.
5242 f the FILE to print on
5248 print_dsn_diagnostic_code(const address_item *addr, FILE *f)
5250 uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL;
5252 /* af_pass_message and addr->message set ? print remote host answer */
5256 debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message);
5258 /* search first ": ". we assume to find the remote-MTA answer there */
5259 if (!(s = Ustrstr(addr->message, ": ")))
5260 return; /* not found, bail out */
5261 s += 2; /* skip ": " */
5262 fprintf(f, "Diagnostic-Code: smtp; ");
5264 /* no message available. do nothing */
5268 if (*s == '\\' && s[1] == 'n')
5270 fputs("\n ", f); /* as defined in RFC 3461 */
5280 /*************************************************
5281 * Check list of addresses for duplication *
5282 *************************************************/
5284 /* This function was introduced when the test for duplicate addresses that are
5285 not pipes, files, or autoreplies was moved from the middle of routing to when
5286 routing was complete. That was to fix obscure cases when the routing history
5287 affects the subsequent routing of identical addresses. This function is called
5288 after routing, to check that the final routed addresses are not duplicates.
5290 If we detect a duplicate, we remember what it is a duplicate of. Note that
5291 pipe, file, and autoreply de-duplication is handled during routing, so we must
5292 leave such "addresses" alone here, as otherwise they will incorrectly be
5295 Argument: address of list anchor
5300 do_duplicate_check(address_item **anchor)
5303 while ((addr = *anchor))
5306 if (testflag(addr, af_pfr))
5308 anchor = &(addr->next);
5310 else if ((tnode = tree_search(tree_duplicates, addr->unique)))
5312 DEBUG(D_deliver|D_route)
5313 debug_printf("%s is a duplicate address: discarded\n", addr->unique);
5314 *anchor = addr->next;
5315 addr->dupof = tnode->data.ptr;
5316 addr->next = addr_duplicate;
5317 addr_duplicate = addr;
5321 tree_add_duplicate(addr->unique, addr);
5322 anchor = &(addr->next);
5330 /*************************************************
5331 * Deliver one message *
5332 *************************************************/
5334 /* This is the function which is called when a message is to be delivered. It
5335 is passed the id of the message. It is possible that the message no longer
5336 exists, if some other process has delivered it, and it is also possible that
5337 the message is being worked on by another process, in which case the data file
5340 If no delivery is attempted for any of the above reasons, the function returns
5341 DELIVER_NOT_ATTEMPTED.
5343 If the give_up flag is set true, do not attempt any deliveries, but instead
5344 fail all outstanding addresses and return the message to the sender (or
5347 A delivery operation has a process all to itself; we never deliver more than
5348 one message in the same process. Therefore we needn't worry too much about
5352 id the id of the message to be delivered
5353 forced TRUE if delivery was forced by an administrator; this overrides
5354 retry delays and causes a delivery to be tried regardless
5355 give_up TRUE if an administrator has requested that delivery attempts
5358 Returns: When the global variable mua_wrapper is FALSE:
5359 DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made
5360 DELIVER_NOT_ATTEMPTED otherwise (see comment above)
5361 When the global variable mua_wrapper is TRUE:
5362 DELIVER_MUA_SUCCEEDED if delivery succeeded
5363 DELIVER_MUA_FAILED if delivery failed
5364 DELIVER_NOT_ATTEMPTED if not attempted (should not occur)
5368 deliver_message(uschar *id, BOOL forced, BOOL give_up)
5371 int final_yield = DELIVER_ATTEMPTED_NORMAL;
5372 time_t now = time(NULL);
5373 address_item *addr_last = NULL;
5374 uschar *filter_message = NULL;
5376 int process_recipients = RECIP_ACCEPT;
5379 extern int acl_where;
5381 uschar *info = queue_run_pid == (pid_t)0
5382 ? string_sprintf("delivering %s", id)
5383 : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid);
5385 /* If the D_process_info bit is on, set_process_info() will output debugging
5386 information. If not, we want to show this initial information if D_deliver or
5387 D_queue_run is set or in verbose mode. */
5389 set_process_info("%s", info);
5391 if ( !(debug_selector & D_process_info)
5392 && (debug_selector & (D_deliver|D_queue_run|D_v))
5394 debug_printf("%s\n", info);
5396 /* Ensure that we catch any subprocesses that are created. Although Exim
5397 sets SIG_DFL as its initial default, some routes through the code end up
5398 here with it set to SIG_IGN - cases where a non-synchronous delivery process
5399 has been forked, but no re-exec has been done. We use sigaction rather than
5400 plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be
5401 sure it is turned off. (There was a problem on AIX with this.) */
5405 struct sigaction act;
5406 act.sa_handler = SIG_DFL;
5407 sigemptyset(&(act.sa_mask));
5409 sigaction(SIGCHLD, &act, NULL);
5412 signal(SIGCHLD, SIG_DFL);
5415 /* Make the forcing flag available for routers and transports, set up the
5416 global message id field, and initialize the count for returned files and the
5417 message size. This use of strcpy() is OK because the length id is checked when
5418 it is obtained from a command line (the -M or -q options), and otherwise it is
5419 known to be a valid message id. */
5421 Ustrcpy(message_id, id);
5422 deliver_force = forced;
5426 /* Initialize some flags */
5428 update_spool = FALSE;
5429 remove_journal = TRUE;
5431 /* Set a known context for any ACLs we call via expansions */
5432 acl_where = ACL_WHERE_DELIVERY;
5434 /* Reset the random number generator, so that if several delivery processes are
5435 started from a queue runner that has already used random numbers (for sorting),
5436 they don't all get the same sequence. */
5440 /* Open and lock the message's data file. Exim locks on this one because the
5441 header file may get replaced as it is re-written during the delivery process.
5442 Any failures cause messages to be written to the log, except for missing files
5443 while queue running - another process probably completed delivery. As part of
5444 opening the data file, message_subdir gets set. */
5446 if ((deliver_datafile = spool_open_datafile(id)) < 0)
5447 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5449 /* The value of message_size at this point has been set to the data length,
5450 plus one for the blank line that notionally precedes the data. */
5452 /* Now read the contents of the header file, which will set up the headers in
5453 store, and also the list of recipients and the tree of non-recipients and
5454 assorted flags. It updates message_size. If there is a reading or format error,
5455 give up; if the message has been around for sufficiently long, remove it. */
5458 uschar * spoolname = string_sprintf("%s-H", id);
5459 if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK)
5461 if (errno == ERRNO_SPOOLFORMAT)
5463 struct stat statbuf;
5464 if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""),
5466 log_write(0, LOG_MAIN, "Format error in spool file %s: "
5467 "size=" OFF_T_FMT, spoolname, statbuf.st_size);
5469 log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname);
5472 log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname,
5475 /* If we managed to read the envelope data, received_time contains the
5476 time the message was received. Otherwise, we can calculate it from the
5479 if (rc != spool_read_hdrerror)
5482 for (i = 0; i < 6; i++)
5483 received_time = received_time * BASE_62 + tab62[id[i] - '0'];
5486 /* If we've had this malformed message too long, sling it. */
5488 if (now - received_time > keep_malformed)
5490 Uunlink(spool_fname(US"msglog", message_subdir, id, US""));
5491 Uunlink(spool_fname(US"input", message_subdir, id, US"-D"));
5492 Uunlink(spool_fname(US"input", message_subdir, id, US"-H"));
5493 Uunlink(spool_fname(US"input", message_subdir, id, US"-J"));
5494 log_write(0, LOG_MAIN, "Message removed because older than %s",
5495 readconf_printtime(keep_malformed));
5498 (void)close(deliver_datafile);
5499 deliver_datafile = -1;
5500 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5504 /* The spool header file has been read. Look to see if there is an existing
5505 journal file for this message. If there is, it means that a previous delivery
5506 attempt crashed (program or host) before it could update the spool header file.
5507 Read the list of delivered addresses from the journal and add them to the
5508 nonrecipients tree. Then update the spool file. We can leave the journal in
5509 existence, as it will get further successful deliveries added to it in this
5510 run, and it will be deleted if this function gets to its end successfully.
5511 Otherwise it might be needed again. */
5514 uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
5516 if ((jread = Ufopen(fname, "rb")))
5518 while (Ufgets(big_buffer, big_buffer_size, jread))
5520 int n = Ustrlen(big_buffer);
5521 big_buffer[n-1] = 0;
5522 tree_add_nonrecipient(big_buffer);
5523 DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from "
5524 "journal file\n", big_buffer);
5526 (void)fclose(jread);
5527 /* Panic-dies on error */
5528 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
5530 else if (errno != ENOENT)
5532 log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: "
5533 "%s", strerror(errno));
5534 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5537 /* A null recipients list indicates some kind of disaster. */
5539 if (!recipients_list)
5541 (void)close(deliver_datafile);
5542 deliver_datafile = -1;
5543 log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname);
5544 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5549 /* Handle a message that is frozen. There are a number of different things that
5550 can happen, but in the default situation, unless forced, no delivery is
5555 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
5556 /* Moving to another directory removes the message from Exim's view. Other
5557 tools must be used to deal with it. Logging of this action happens in
5558 spool_move_message() and its subfunctions. */
5560 if ( move_frozen_messages
5561 && spool_move_message(id, message_subdir, US"", US"F")
5563 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5566 /* For all frozen messages (bounces or not), timeout_frozen_after sets the
5567 maximum time to keep messages that are frozen. Thaw if we reach it, with a
5568 flag causing all recipients to be failed. The time is the age of the
5569 message, not the time since freezing. */
5571 if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after)
5573 log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after");
5574 process_recipients = RECIP_FAIL_TIMEOUT;
5577 /* For bounce messages (and others with no sender), thaw if the error message
5578 ignore timer is exceeded. The message will be discarded if this delivery
5581 else if (!*sender_address && message_age >= ignore_bounce_errors_after)
5582 log_write(0, LOG_MAIN, "Unfrozen by errmsg timer");
5584 /* If this is a bounce message, or there's no auto thaw, or we haven't
5585 reached the auto thaw time yet, and this delivery is not forced by an admin
5586 user, do not attempt delivery of this message. Note that forced is set for
5587 continuing messages down the same channel, in order to skip load checking and
5588 ignore hold domains, but we don't want unfreezing in that case. */
5592 if ( ( sender_address[0] == 0
5594 || now <= deliver_frozen_at + auto_thaw
5596 && ( !forced || !deliver_force_thaw
5597 || !admin_user || continue_hostname
5600 (void)close(deliver_datafile);
5601 deliver_datafile = -1;
5602 log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
5603 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5606 /* If delivery was forced (by an admin user), assume a manual thaw.
5607 Otherwise it's an auto thaw. */
5611 deliver_manual_thaw = TRUE;
5612 log_write(0, LOG_MAIN, "Unfrozen by forced delivery");
5614 else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw");
5617 /* We get here if any of the rules for unfreezing have triggered. */
5619 deliver_freeze = FALSE;
5620 update_spool = TRUE;
5624 /* Open the message log file if we are using them. This records details of
5625 deliveries, deferments, and failures for the benefit of the mail administrator.
5626 The log is not used by exim itself to track the progress of a message; that is
5627 done by rewriting the header spool file. */
5631 uschar * fname = spool_fname(US"msglog", message_subdir, id, US"");
5635 if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0)
5637 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error,
5638 fname, strerror(errno));
5639 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5642 /* Make a C stream out of it. */
5644 if (!(message_log = fdopen(fd, "a")))
5646 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s",
5647 fname, strerror(errno));
5648 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5653 /* If asked to give up on a message, log who did it, and set the action for all
5658 struct passwd *pw = getpwuid(real_uid);
5659 log_write(0, LOG_MAIN, "cancelled by %s",
5660 pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid));
5661 process_recipients = RECIP_FAIL;
5664 /* Otherwise, if there are too many Received: headers, fail all recipients. */
5666 else if (received_count > received_headers_max)
5667 process_recipients = RECIP_FAIL_LOOP;
5669 /* Otherwise, if a system-wide, address-independent message filter is
5670 specified, run it now, except in the case when we are failing all recipients as
5671 a result of timeout_frozen_after. If the system filter yields "delivered", then
5672 ignore the true recipients of the message. Failure of the filter file is
5673 logged, and the delivery attempt fails. */
5675 else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT)
5680 redirect_block redirect;
5682 if (system_filter_uid_set)
5684 ugid.uid = system_filter_uid;
5685 ugid.gid = system_filter_gid;
5686 ugid.uid_set = ugid.gid_set = TRUE;
5690 ugid.uid_set = ugid.gid_set = FALSE;
5693 return_path = sender_address;
5694 enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */
5695 system_filtering = TRUE;
5697 /* Any error in the filter file causes a delivery to be abandoned. */
5699 redirect.string = system_filter;
5700 redirect.isfile = TRUE;
5701 redirect.check_owner = redirect.check_group = FALSE;
5702 redirect.owners = NULL;
5703 redirect.owngroups = NULL;
5705 redirect.modemask = 0;
5707 DEBUG(D_deliver|D_filter) debug_printf("running system filter\n");
5710 &redirect, /* Where the data is */
5711 RDO_DEFER | /* Turn on all the enabling options */
5712 RDO_FAIL | /* Leave off all the disabling options */
5717 NULL, /* No :include: restriction (not used in filter) */
5718 NULL, /* No sieve vacation directory (not sieve!) */
5719 NULL, /* No sieve enotify mailto owner (not sieve!) */
5720 NULL, /* No sieve user address (not sieve!) */
5721 NULL, /* No sieve subaddress (not sieve!) */
5722 &ugid, /* uid/gid data */
5723 &addr_new, /* Where to hang generated addresses */
5724 &filter_message, /* Where to put error message */
5725 NULL, /* Don't skip syntax errors */
5726 &filtertype, /* Will always be set to FILTER_EXIM for this call */
5727 US"system filter"); /* For error messages */
5729 DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc);
5731 if (rc == FF_ERROR || rc == FF_NONEXIST)
5733 (void)close(deliver_datafile);
5734 deliver_datafile = -1;
5735 log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s",
5736 string_printing(filter_message));
5737 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5740 /* Reset things. If the filter message is an empty string, which can happen
5741 for a filter "fail" or "freeze" command with no text, reset it to NULL. */
5743 system_filtering = FALSE;
5744 enable_dollar_recipients = FALSE;
5745 if (filter_message && filter_message[0] == 0) filter_message = NULL;
5747 /* Save the values of the system filter variables so that user filters
5750 memcpy(filter_sn, filter_n, sizeof(filter_sn));
5752 /* The filter can request that delivery of the original addresses be
5757 process_recipients = RECIP_DEFER;
5758 deliver_msglog("Delivery deferred by system filter\n");
5759 log_write(0, LOG_MAIN, "Delivery deferred by system filter");
5762 /* The filter can request that a message be frozen, but this does not
5763 take place if the message has been manually thawed. In that case, we must
5764 unset "delivered", which is forced by the "freeze" command to make -bF
5767 else if (rc == FF_FREEZE && !deliver_manual_thaw)
5769 deliver_freeze = TRUE;
5770 deliver_frozen_at = time(NULL);
5771 process_recipients = RECIP_DEFER;
5772 frozen_info = string_sprintf(" by the system filter%s%s",
5773 filter_message ? US": " : US"",
5774 filter_message ? filter_message : US"");
5777 /* The filter can request that a message be failed. The error message may be
5778 quite long - it is sent back to the sender in the bounce - but we don't want
5779 to fill up the log with repetitions of it. If it starts with << then the text
5780 between << and >> is written to the log, with the rest left for the bounce
5783 else if (rc == FF_FAIL)
5785 uschar *colon = US"";
5786 uschar *logmsg = US"";
5789 process_recipients = RECIP_FAIL_FILTER;
5795 if ( filter_message[0] == '<'
5796 && filter_message[1] == '<'
5797 && (logend = Ustrstr(filter_message, ">>"))
5800 logmsg = filter_message + 2;
5801 loglen = logend - logmsg;
5802 filter_message = logend + 2;
5803 if (filter_message[0] == 0) filter_message = NULL;
5807 logmsg = filter_message;
5808 loglen = Ustrlen(filter_message);
5812 log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen,
5816 /* Delivery can be restricted only to those recipients (if any) that the
5817 filter specified. */
5819 else if (rc == FF_DELIVERED)
5821 process_recipients = RECIP_IGNORE;
5823 log_write(0, LOG_MAIN, "original recipients ignored (system filter)");
5825 log_write(0, LOG_MAIN, "=> discarded (system filter)");
5828 /* If any new addresses were created by the filter, fake up a "parent"
5829 for them. This is necessary for pipes, etc., which are expected to have
5830 parents, and it also gives some sensible logging for others. Allow
5831 pipes, files, and autoreplies, and run them as the filter uid if set,
5832 otherwise as the current uid. */
5836 int uid = (system_filter_uid_set)? system_filter_uid : geteuid();
5837 int gid = (system_filter_gid_set)? system_filter_gid : getegid();
5839 /* The text "system-filter" is tested in transport_set_up_command() and in
5840 set_up_shell_command() in the pipe transport, to enable them to permit
5841 $recipients, so don't change it here without also changing it there. */
5843 address_item *p = addr_new;
5844 address_item *parent = deliver_make_addr(US"system-filter", FALSE);
5846 parent->domain = string_copylc(qualify_domain_recipient);
5847 parent->local_part = US"system-filter";
5849 /* As part of this loop, we arrange for addr_last to end up pointing
5850 at the final address. This is used if we go on to add addresses for the
5851 original recipients. */
5855 if (parent->child_count == SHRT_MAX)
5856 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more "
5857 "than %d delivery addresses", SHRT_MAX);
5858 parent->child_count++;
5861 if (testflag(p, af_pfr))
5867 setflag(p, af_uid_set |
5873 /* Find the name of the system filter's appropriate pfr transport */
5875 if (p->address[0] == '|')
5878 tpname = system_filter_pipe_transport;
5879 address_pipe = p->address;
5881 else if (p->address[0] == '>')
5884 tpname = system_filter_reply_transport;
5888 if (p->address[Ustrlen(p->address)-1] == '/')
5890 type = US"directory";
5891 tpname = system_filter_directory_transport;
5896 tpname = system_filter_file_transport;
5898 address_file = p->address;
5901 /* Now find the actual transport, first expanding the name. We have
5902 set address_file or address_pipe above. */
5906 uschar *tmp = expand_string(tpname);
5907 address_file = address_pipe = NULL;
5909 p->message = string_sprintf("failed to expand \"%s\" as a "
5910 "system filter transport name", tpname);
5915 p->message = string_sprintf("system_filter_%s_transport is unset",
5921 transport_instance *tp;
5922 for (tp = transports; tp; tp = tp->next)
5924 if (Ustrcmp(tp->name, tpname) == 0)
5931 p->message = string_sprintf("failed to find \"%s\" transport "
5932 "for system filter delivery", tpname);
5935 /* If we couldn't set up a transport, defer the delivery, putting the
5936 error on the panic log as well as the main log. */
5940 address_item *badp = p;
5942 if (!addr_last) addr_new = p; else addr_last->next = p;
5943 badp->local_part = badp->address; /* Needed for log line */
5944 post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, DTYPE_ROUTER, 0);
5947 } /* End of pfr handling */
5949 /* Either a non-pfr delivery, or we found a transport */
5951 DEBUG(D_deliver|D_filter)
5952 debug_printf("system filter added %s\n", p->address);
5956 } /* Loop through all addr_new addresses */
5961 /* Scan the recipients list, and for every one that is not in the non-
5962 recipients tree, add an addr item to the chain of new addresses. If the pno
5963 value is non-negative, we must set the onetime parent from it. This which
5964 points to the relevant entry in the recipients list.
5966 This processing can be altered by the setting of the process_recipients
5967 variable, which is changed if recipients are to be ignored, failed, or
5968 deferred. This can happen as a result of system filter activity, or if the -Mg
5969 option is used to fail all of them.
5971 Duplicate addresses are handled later by a different tree structure; we can't
5972 just extend the non-recipients tree, because that will be re-written to the
5973 spool if the message is deferred, and in any case there are casing
5974 complications for local addresses. */
5976 if (process_recipients != RECIP_IGNORE)
5978 for (i = 0; i < recipients_count; i++)
5980 if (!tree_search(tree_nonrecipients, recipients_list[i].address))
5982 recipient_item *r = recipients_list + i;
5983 address_item *new = deliver_make_addr(r->address, FALSE);
5984 new->prop.errors_address = r->errors_to;
5986 if ((new->prop.utf8_msg = message_smtputf8))
5988 new->prop.utf8_downcvt = message_utf8_downconvert == 1;
5989 new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1;
5990 DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n",
5991 new->prop.utf8_downcvt ? "yes"
5992 : new->prop.utf8_downcvt_maybe ? "ifneeded"
5998 new->onetime_parent = recipients_list[r->pno].address;
6000 /* If DSN support is enabled, set the dsn flags and the original receipt
6001 to be passed on to other DSN enabled MTAs */
6002 new->dsn_flags = r->dsn_flags & rf_dsnflags;
6003 new->dsn_orcpt = r->orcpt;
6004 DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n",
6005 new->dsn_orcpt, new->dsn_flags);
6007 switch (process_recipients)
6009 /* RECIP_DEFER is set when a system filter freezes a message. */
6012 new->next = addr_defer;
6017 /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
6020 case RECIP_FAIL_FILTER:
6022 filter_message ? filter_message : US"delivery cancelled";
6023 setflag(new, af_pass_message);
6024 goto RECIP_QUEUE_FAILED; /* below */
6027 /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older
6028 than the value in timeout_frozen_after. Treat non-bounce messages
6029 similarly to -Mg; for bounce messages we just want to discard, so
6030 don't put the address on the failed list. The timeout has already
6033 case RECIP_FAIL_TIMEOUT:
6034 new->message = US"delivery cancelled; message timed out";
6035 goto RECIP_QUEUE_FAILED; /* below */
6038 /* RECIP_FAIL is set when -Mg has been used. */
6041 new->message = US"delivery cancelled by administrator";
6044 /* Common code for the failure cases above. If this is not a bounce
6045 message, put the address on the failed list so that it is used to
6046 create a bounce. Otherwise do nothing - this just discards the address.
6047 The incident has already been logged. */
6050 if (sender_address[0] != 0)
6052 new->next = addr_failed;
6058 /* RECIP_FAIL_LOOP is set when there are too many Received: headers
6059 in the message. Process each address as a routing failure; if this
6060 is a bounce message, it will get frozen. */
6062 case RECIP_FAIL_LOOP:
6063 new->message = US"Too many \"Received\" headers - suspected mail loop";
6064 post_process_one(new, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6068 /* Value should be RECIP_ACCEPT; take this as the safe default. */
6071 if (!addr_new) addr_new = new; else addr_last->next = new;
6076 #ifndef DISABLE_EVENT
6077 if (process_recipients != RECIP_ACCEPT)
6079 uschar * save_local = deliver_localpart;
6080 const uschar * save_domain = deliver_domain;
6082 deliver_localpart = expand_string(
6083 string_sprintf("${local_part:%s}", new->address));
6084 deliver_domain = expand_string(
6085 string_sprintf("${domain:%s}", new->address));
6087 (void) event_raise(event_action,
6088 US"msg:fail:internal", new->message);
6090 deliver_localpart = save_local;
6091 deliver_domain = save_domain;
6101 debug_printf("Delivery address list:\n");
6102 for (p = addr_new; p; p = p->next)
6103 debug_printf(" %s %s\n", p->address,
6104 p->onetime_parent ? p->onetime_parent : US"");
6107 /* Set up the buffers used for copying over the file when delivering. */
6109 deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
6110 deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
6114 /* Until there are no more new addresses, handle each one as follows:
6116 . If this is a generated address (indicated by the presence of a parent
6117 pointer) then check to see whether it is a pipe, file, or autoreply, and
6118 if so, handle it directly here. The router that produced the address will
6119 have set the allow flags into the address, and also set the uid/gid required.
6120 Having the routers generate new addresses and then checking them here at
6121 the outer level is tidier than making each router do the checking, and
6122 means that routers don't need access to the failed address queue.
6124 . Break up the address into local part and domain, and make lowercased
6125 versions of these strings. We also make unquoted versions of the local part.
6127 . Handle the percent hack for those domains for which it is valid.
6129 . For child addresses, determine if any of the parents have the same address.
6130 If so, generate a different string for previous delivery checking. Without
6131 this code, if the address spqr generates spqr via a forward or alias file,
6132 delivery of the generated spqr stops further attempts at the top level spqr,
6133 which is not what is wanted - it may have generated other addresses.
6135 . Check on the retry database to see if routing was previously deferred, but
6136 only if in a queue run. Addresses that are to be routed are put on the
6137 addr_route chain. Addresses that are to be deferred are put on the
6138 addr_defer chain. We do all the checking first, so as not to keep the
6139 retry database open any longer than necessary.
6141 . Now we run the addresses through the routers. A router may put the address
6142 on either the addr_local or the addr_remote chain for local or remote
6143 delivery, respectively, or put it on the addr_failed chain if it is
6144 undeliveable, or it may generate child addresses and put them on the
6145 addr_new chain, or it may defer an address. All the chain anchors are
6146 passed as arguments so that the routers can be called for verification
6149 . If new addresses have been generated by the routers, da capo.
6152 header_rewritten = FALSE; /* No headers rewritten yet */
6153 while (addr_new) /* Loop until all addresses dealt with */
6155 address_item *addr, *parent;
6157 /* Failure to open the retry database is treated the same as if it does
6158 not exist. In both cases, dbm_file is NULL. */
6160 if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE)))
6162 DEBUG(D_deliver|D_retry|D_route|D_hints_lookup)
6163 debug_printf("no retry data available\n");
6166 /* Scan the current batch of new addresses, to handle pipes, files and
6167 autoreplies, and determine which others are ready for routing. */
6174 dbdata_retry *domain_retry_record;
6175 dbdata_retry *address_retry_record;
6178 addr_new = addr->next;
6180 DEBUG(D_deliver|D_retry|D_route)
6182 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
6183 debug_printf("Considering: %s\n", addr->address);
6186 /* Handle generated address that is a pipe or a file or an autoreply. */
6188 if (testflag(addr, af_pfr))
6190 /* If an autoreply in a filter could not generate a syntactically valid
6191 address, give up forthwith. Set af_ignore_error so that we don't try to
6192 generate a bounce. */
6194 if (testflag(addr, af_bad_reply))
6196 addr->basic_errno = ERRNO_BADADDRESS2;
6197 addr->local_part = addr->address;
6199 US"filter autoreply generated syntactically invalid recipient";
6200 setflag(addr, af_ignore_error);
6201 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6202 continue; /* with the next new address */
6205 /* If two different users specify delivery to the same pipe or file or
6206 autoreply, there should be two different deliveries, so build a unique
6207 string that incorporates the original address, and use this for
6208 duplicate testing and recording delivery, and also for retrying. */
6211 string_sprintf("%s:%s", addr->address, addr->parent->unique +
6212 (testflag(addr->parent, af_homonym)? 3:0));
6214 addr->address_retry_key = addr->domain_retry_key =
6215 string_sprintf("T:%s", addr->unique);
6217 /* If a filter file specifies two deliveries to the same pipe or file,
6218 we want to de-duplicate, but this is probably not wanted for two mail
6219 commands to the same address, where probably both should be delivered.
6220 So, we have to invent a different unique string in that case. Just
6221 keep piling '>' characters on the front. */
6223 if (addr->address[0] == '>')
6225 while (tree_search(tree_duplicates, addr->unique))
6226 addr->unique = string_sprintf(">%s", addr->unique);
6229 else if ((tnode = tree_search(tree_duplicates, addr->unique)))
6231 DEBUG(D_deliver|D_route)
6232 debug_printf("%s is a duplicate address: discarded\n", addr->address);
6233 addr->dupof = tnode->data.ptr;
6234 addr->next = addr_duplicate;
6235 addr_duplicate = addr;
6239 DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
6241 /* Check for previous delivery */
6243 if (tree_search(tree_nonrecipients, addr->unique))
6245 DEBUG(D_deliver|D_route)
6246 debug_printf("%s was previously delivered: discarded\n", addr->address);
6247 child_done(addr, tod_stamp(tod_log));
6251 /* Save for checking future duplicates */
6253 tree_add_duplicate(addr->unique, addr);
6255 /* Set local part and domain */
6257 addr->local_part = addr->address;
6258 addr->domain = addr->parent->domain;
6260 /* Ensure that the delivery is permitted. */
6262 if (testflag(addr, af_file))
6264 if (!testflag(addr, af_allow_file))
6266 addr->basic_errno = ERRNO_FORBIDFILE;
6267 addr->message = US"delivery to file forbidden";
6268 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6269 continue; /* with the next new address */
6272 else if (addr->address[0] == '|')
6274 if (!testflag(addr, af_allow_pipe))
6276 addr->basic_errno = ERRNO_FORBIDPIPE;
6277 addr->message = US"delivery to pipe forbidden";
6278 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6279 continue; /* with the next new address */
6282 else if (!testflag(addr, af_allow_reply))
6284 addr->basic_errno = ERRNO_FORBIDREPLY;
6285 addr->message = US"autoreply forbidden";
6286 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6287 continue; /* with the next new address */
6290 /* If the errno field is already set to BADTRANSPORT, it indicates
6291 failure to expand a transport string, or find the associated transport,
6292 or an unset transport when one is required. Leave this test till now so
6293 that the forbid errors are given in preference. */
6295 if (addr->basic_errno == ERRNO_BADTRANSPORT)
6297 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6301 /* Treat /dev/null as a special case and abandon the delivery. This
6302 avoids having to specify a uid on the transport just for this case.
6303 Arrange for the transport name to be logged as "**bypassed**". */
6305 if (Ustrcmp(addr->address, "/dev/null") == 0)
6307 uschar *save = addr->transport->name;
6308 addr->transport->name = US"**bypassed**";
6309 (void)post_process_one(addr, OK, LOG_MAIN, DTYPE_TRANSPORT, '=');
6310 addr->transport->name = save;
6311 continue; /* with the next new address */
6314 /* Pipe, file, or autoreply delivery is to go ahead as a normal local
6317 DEBUG(D_deliver|D_route)
6318 debug_printf("queued for %s transport\n", addr->transport->name);
6319 addr->next = addr_local;
6321 continue; /* with the next new address */
6324 /* Handle normal addresses. First, split up into local part and domain,
6325 handling the %-hack if necessary. There is the possibility of a defer from
6326 a lookup in percent_hack_domains. */
6328 if ((rc = deliver_split_address(addr)) == DEFER)
6330 addr->message = US"cannot check percent_hack_domains";
6331 addr->basic_errno = ERRNO_LISTDEFER;
6332 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
6336 /* Check to see if the domain is held. If so, proceed only if the
6337 delivery was forced by hand. */
6339 deliver_domain = addr->domain; /* set $domain */
6340 if ( !forced && hold_domains
6341 && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0,
6342 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE,
6348 addr->message = US"hold_domains lookup deferred";
6349 addr->basic_errno = ERRNO_LISTDEFER;
6353 addr->message = US"domain is held";
6354 addr->basic_errno = ERRNO_HELD;
6356 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
6360 /* Now we can check for duplicates and previously delivered addresses. In
6361 order to do this, we have to generate a "unique" value for each address,
6362 because there may be identical actual addresses in a line of descendents.
6363 The "unique" field is initialized to the same value as the "address" field,
6364 but gets changed here to cope with identically-named descendents. */
6366 for (parent = addr->parent; parent; parent = parent->parent)
6367 if (strcmpic(addr->address, parent->address) == 0) break;
6369 /* If there's an ancestor with the same name, set the homonym flag. This
6370 influences how deliveries are recorded. Then add a prefix on the front of
6371 the unique address. We use \n\ where n starts at 0 and increases each time.
6372 It is unlikely to pass 9, but if it does, it may look odd but will still
6373 work. This means that siblings or cousins with the same names are treated
6374 as duplicates, which is what we want. */
6378 setflag(addr, af_homonym);
6379 if (parent->unique[0] != '\\')
6380 addr->unique = string_sprintf("\\0\\%s", addr->address);
6382 addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1,
6386 /* Ensure that the domain in the unique field is lower cased, because
6387 domains are always handled caselessly. */
6389 p = Ustrrchr(addr->unique, '@');
6390 while (*p != 0) { *p = tolower(*p); p++; }
6392 DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
6394 if (tree_search(tree_nonrecipients, addr->unique))
6396 DEBUG(D_deliver|D_route)
6397 debug_printf("%s was previously delivered: discarded\n", addr->unique);
6398 child_done(addr, tod_stamp(tod_log));
6402 /* Get the routing retry status, saving the two retry keys (with and
6403 without the local part) for subsequent use. If there is no retry record for
6404 the standard address routing retry key, we look for the same key with the
6405 sender attached, because this form is used by the smtp transport after a
6406 4xx response to RCPT when address_retry_include_sender is true. */
6408 addr->domain_retry_key = string_sprintf("R:%s", addr->domain);
6409 addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part,
6414 domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key);
6415 if ( domain_retry_record
6416 && now - domain_retry_record->time_stamp > retry_data_expire
6418 domain_retry_record = NULL; /* Ignore if too old */
6420 address_retry_record = dbfn_read(dbm_file, addr->address_retry_key);
6421 if ( address_retry_record
6422 && now - address_retry_record->time_stamp > retry_data_expire
6424 address_retry_record = NULL; /* Ignore if too old */
6426 if (!address_retry_record)
6428 uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
6430 address_retry_record = dbfn_read(dbm_file, altkey);
6431 if ( address_retry_record
6432 && now - address_retry_record->time_stamp > retry_data_expire)
6433 address_retry_record = NULL; /* Ignore if too old */
6437 domain_retry_record = address_retry_record = NULL;
6439 DEBUG(D_deliver|D_retry)
6441 if (!domain_retry_record)
6442 debug_printf("no domain retry record\n");
6443 if (!address_retry_record)
6444 debug_printf("no address retry record\n");
6447 /* If we are sending a message down an existing SMTP connection, we must
6448 assume that the message which created the connection managed to route
6449 an address to that connection. We do not want to run the risk of taking
6450 a long time over routing here, because if we do, the server at the other
6451 end of the connection may time it out. This is especially true for messages
6452 with lots of addresses. For this kind of delivery, queue_running is not
6453 set, so we would normally route all addresses. We take a pragmatic approach
6454 and defer routing any addresses that have any kind of domain retry record.
6455 That is, we don't even look at their retry times. It doesn't matter if this
6456 doesn't work occasionally. This is all just an optimization, after all.
6458 The reason for not doing the same for address retries is that they normally
6459 arise from 4xx responses, not DNS timeouts. */
6461 if (continue_hostname && domain_retry_record)
6463 addr->message = US"reusing SMTP connection skips previous routing defer";
6464 addr->basic_errno = ERRNO_RRETRY;
6465 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6468 /* If we are in a queue run, defer routing unless there is no retry data or
6469 we've passed the next retry time, or this message is forced. In other
6470 words, ignore retry data when not in a queue run.
6472 However, if the domain retry time has expired, always allow the routing
6473 attempt. If it fails again, the address will be failed. This ensures that
6474 each address is routed at least once, even after long-term routing
6477 If there is an address retry, check that too; just wait for the next
6478 retry time. This helps with the case when the temporary error on the
6479 address was really message-specific rather than address specific, since
6480 it allows other messages through.
6482 We also wait for the next retry time if this is a message sent down an
6483 existing SMTP connection (even though that will be forced). Otherwise there
6484 will be far too many attempts for an address that gets a 4xx error. In
6485 fact, after such an error, we should not get here because, the host should
6486 not be remembered as one this message needs. However, there was a bug that
6487 used to cause this to happen, so it is best to be on the safe side.
6489 Even if we haven't reached the retry time in the hints, there is one more
6490 check to do, which is for the ultimate address timeout. We only do this
6491 check if there is an address retry record and there is not a domain retry
6492 record; this implies that previous attempts to handle the address had the
6493 retry_use_local_parts option turned on. We use this as an approximation
6494 for the destination being like a local delivery, for example delivery over
6495 LMTP to an IMAP message store. In this situation users are liable to bump
6496 into their quota and thereby have intermittently successful deliveries,
6497 which keep the retry record fresh, which can lead to us perpetually
6498 deferring messages. */
6500 else if ( ( queue_running && !deliver_force
6501 || continue_hostname
6503 && ( ( domain_retry_record
6504 && now < domain_retry_record->next_try
6505 && !domain_retry_record->expired
6507 || ( address_retry_record
6508 && now < address_retry_record->next_try
6510 && ( domain_retry_record
6511 || !address_retry_record
6512 || !retry_ultimate_address_timeout(addr->address_retry_key,
6513 addr->domain, address_retry_record, now)
6516 addr->message = US"retry time not reached";
6517 addr->basic_errno = ERRNO_RRETRY;
6518 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6521 /* The domain is OK for routing. Remember if retry data exists so it
6522 can be cleaned up after a successful delivery. */
6526 if (domain_retry_record || address_retry_record)
6527 setflag(addr, af_dr_retry_exists);
6528 addr->next = addr_route;
6530 DEBUG(D_deliver|D_route)
6531 debug_printf("%s: queued for routing\n", addr->address);
6535 /* The database is closed while routing is actually happening. Requests to
6536 update it are put on a chain and all processed together at the end. */
6538 if (dbm_file) dbfn_close(dbm_file);
6540 /* If queue_domains is set, we don't even want to try routing addresses in
6541 those domains. During queue runs, queue_domains is forced to be unset.
6542 Optimize by skipping this pass through the addresses if nothing is set. */
6544 if (!deliver_force && queue_domains)
6546 address_item *okaddr = NULL;
6549 address_item *addr = addr_route;
6550 addr_route = addr->next;
6552 deliver_domain = addr->domain; /* set $domain */
6553 if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0,
6554 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
6559 addr->basic_errno = ERRNO_LISTDEFER;
6560 addr->message = US"queue_domains lookup deferred";
6561 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6565 addr->next = okaddr;
6571 addr->basic_errno = ERRNO_QUEUE_DOMAIN;
6572 addr->message = US"domain is in queue_domains";
6573 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6577 addr_route = okaddr;
6580 /* Now route those addresses that are not deferred. */
6585 address_item *addr = addr_route;
6586 const uschar *old_domain = addr->domain;
6587 uschar *old_unique = addr->unique;
6588 addr_route = addr->next;
6591 /* Just in case some router parameter refers to it. */
6593 if (!(return_path = addr->prop.errors_address))
6594 return_path = sender_address;
6596 /* If a router defers an address, add a retry item. Whether or not to
6597 use the local part in the key is a property of the router. */
6599 if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new,
6600 &addr_succeed, v_none)) == DEFER)
6601 retry_add_item(addr,
6602 addr->router->retry_use_local_part
6603 ? string_sprintf("R:%s@%s", addr->local_part, addr->domain)
6604 : string_sprintf("R:%s", addr->domain),
6607 /* Otherwise, if there is an existing retry record in the database, add
6608 retry items to delete both forms. We must also allow for the possibility
6609 of a routing retry that includes the sender address. Since the domain might
6610 have been rewritten (expanded to fully qualified) as a result of routing,
6611 ensure that the rewritten form is also deleted. */
6613 else if (testflag(addr, af_dr_retry_exists))
6615 uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
6617 retry_add_item(addr, altkey, rf_delete);
6618 retry_add_item(addr, addr->address_retry_key, rf_delete);
6619 retry_add_item(addr, addr->domain_retry_key, rf_delete);
6620 if (Ustrcmp(addr->domain, old_domain) != 0)
6621 retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete);
6624 /* DISCARD is given for :blackhole: and "seen finish". The event has been
6625 logged, but we need to ensure the address (and maybe parents) is marked
6630 address_done(addr, tod_stamp(tod_log));
6631 continue; /* route next address */
6634 /* The address is finished with (failed or deferred). */
6638 (void)post_process_one(addr, rc, LOG_MAIN, DTYPE_ROUTER, 0);
6639 continue; /* route next address */
6642 /* The address has been routed. If the router changed the domain, it will
6643 also have changed the unique address. We have to test whether this address
6644 has already been delivered, because it's the unique address that finally
6647 if ( addr->unique != old_unique
6648 && tree_search(tree_nonrecipients, addr->unique) != 0
6651 DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: "
6652 "discarded\n", addr->address);
6653 if (addr_remote == addr) addr_remote = addr->next;
6654 else if (addr_local == addr) addr_local = addr->next;
6657 /* If the router has same_domain_copy_routing set, we are permitted to copy
6658 the routing for any other addresses with the same domain. This is an
6659 optimisation to save repeated DNS lookups for "standard" remote domain
6660 routing. The option is settable only on routers that generate host lists.
6661 We play it very safe, and do the optimization only if the address is routed
6662 to a remote transport, there are no header changes, and the domain was not
6663 modified by the router. */
6665 if ( addr_remote == addr
6666 && addr->router->same_domain_copy_routing
6667 && !addr->prop.extra_headers
6668 && !addr->prop.remove_headers
6669 && old_domain == addr->domain
6672 address_item **chain = &addr_route;
6675 address_item *addr2 = *chain;
6676 if (Ustrcmp(addr2->domain, addr->domain) != 0)
6678 chain = &(addr2->next);
6682 /* Found a suitable address; take it off the routing list and add it to
6683 the remote delivery list. */
6685 *chain = addr2->next;
6686 addr2->next = addr_remote;
6687 addr_remote = addr2;
6689 /* Copy the routing data */
6691 addr2->domain = addr->domain;
6692 addr2->router = addr->router;
6693 addr2->transport = addr->transport;
6694 addr2->host_list = addr->host_list;
6695 addr2->fallback_hosts = addr->fallback_hosts;
6696 addr2->prop.errors_address = addr->prop.errors_address;
6697 copyflag(addr2, addr, af_hide_child | af_local_host_removed);
6699 DEBUG(D_deliver|D_route)
6701 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
6703 "Routing for %s copied from %s\n",
6704 addr2->address, addr2->address, addr->address);
6708 } /* Continue with routing the next address. */
6709 } /* Loop to process any child addresses that the routers created, and
6710 any rerouted addresses that got put back on the new chain. */
6713 /* Debugging: show the results of the routing */
6715 DEBUG(D_deliver|D_retry|D_route)
6718 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
6719 debug_printf("After routing:\n Local deliveries:\n");
6720 for (p = addr_local; p; p = p->next)
6721 debug_printf(" %s\n", p->address);
6723 debug_printf(" Remote deliveries:\n");
6724 for (p = addr_remote; p; p = p->next)
6725 debug_printf(" %s\n", p->address);
6727 debug_printf(" Failed addresses:\n");
6728 for (p = addr_failed; p; p = p->next)
6729 debug_printf(" %s\n", p->address);
6731 debug_printf(" Deferred addresses:\n");
6732 for (p = addr_defer; p; p = p->next)
6733 debug_printf(" %s\n", p->address);
6736 /* Free any resources that were cached during routing. */
6741 /* These two variables are set only during routing, after check_local_user.
6742 Ensure they are not set in transports. */
6744 local_user_gid = (gid_t)(-1);
6745 local_user_uid = (uid_t)(-1);
6747 /* Check for any duplicate addresses. This check is delayed until after
6748 routing, because the flexibility of the routing configuration means that
6749 identical addresses with different parentage may end up being redirected to
6750 different addresses. Checking for duplicates too early (as we previously used
6751 to) makes this kind of thing not work. */
6753 do_duplicate_check(&addr_local);
6754 do_duplicate_check(&addr_remote);
6756 /* When acting as an MUA wrapper, we proceed only if all addresses route to a
6757 remote transport. The check that they all end up in one transaction happens in
6758 the do_remote_deliveries() function. */
6761 && (addr_local || addr_failed || addr_defer)
6765 uschar *which, *colon, *msg;
6772 else if (addr_defer)
6775 which = US"deferred";
6783 while (addr->parent) addr = addr->parent;
6788 msg = addr->message;
6790 else colon = msg = US"";
6792 /* We don't need to log here for a forced failure as it will already
6793 have been logged. Defer will also have been logged, but as a defer, so we do
6794 need to do the failure logging. */
6796 if (addr != addr_failed)
6797 log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery",
6798 addr->address, which);
6800 /* Always write an error to the caller */
6802 fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address,
6805 final_yield = DELIVER_MUA_FAILED;
6806 addr_failed = addr_defer = NULL; /* So that we remove the message */
6807 goto DELIVERY_TIDYUP;
6811 /* If this is a run to continue deliveries to an external channel that is
6812 already set up, defer any local deliveries. */
6814 if (continue_transport)
6818 address_item *addr = addr_defer;
6819 while (addr->next) addr = addr->next;
6820 addr->next = addr_local;
6823 addr_defer = addr_local;
6828 /* Because address rewriting can happen in the routers, we should not really do
6829 ANY deliveries until all addresses have been routed, so that all recipients of
6830 the message get the same headers. However, this is in practice not always
6831 possible, since sometimes remote addresses give DNS timeouts for days on end.
6832 The pragmatic approach is to deliver what we can now, saving any rewritten
6833 headers so that at least the next lot of recipients benefit from the rewriting
6834 that has already been done.
6836 If any headers have been rewritten during routing, update the spool file to
6837 remember them for all subsequent deliveries. This can be delayed till later if
6838 there is only address to be delivered - if it succeeds the spool write need not
6841 if ( header_rewritten
6843 && (addr_local->next || addr_remote)
6845 || (addr_remote && addr_remote->next)
6848 /* Panic-dies on error */
6849 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
6850 header_rewritten = FALSE;
6854 /* If there are any deliveries to be done, open the journal file. This is used
6855 to record successful deliveries as soon as possible after each delivery is
6856 known to be complete. A file opened with O_APPEND is used so that several
6857 processes can run simultaneously.
6859 The journal is just insurance against crashes. When the spool file is
6860 ultimately updated at the end of processing, the journal is deleted. If a
6861 journal is found to exist at the start of delivery, the addresses listed
6862 therein are added to the non-recipients. */
6864 if (addr_local || addr_remote)
6866 uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
6868 if ((journal_fd = Uopen(fname, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE)) <0)
6870 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s",
6871 fname, strerror(errno));
6872 return DELIVER_NOT_ATTEMPTED;
6875 /* Set the close-on-exec flag, make the file owned by Exim, and ensure
6876 that the mode is correct - the group setting doesn't always seem to get
6877 set automatically. */
6879 if( fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC)
6880 || fchown(journal_fd, exim_uid, exim_gid)
6881 || fchmod(journal_fd, SPOOL_MODE)
6884 int ret = Uunlink(fname);
6885 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s",
6886 fname, strerror(errno));
6887 if(ret && errno != ENOENT)
6888 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
6889 fname, strerror(errno));
6890 return DELIVER_NOT_ATTEMPTED;
6896 /* Now we can get down to the business of actually doing deliveries. Local
6897 deliveries are done first, then remote ones. If ever the problems of how to
6898 handle fallback transports are figured out, this section can be put into a loop
6899 for handling fallbacks, though the uid switching will have to be revised. */
6901 /* Precompile a regex that is used to recognize a parameter in response
6902 to an LHLO command, if is isn't already compiled. This may be used on both
6903 local and remote LMTP deliveries. */
6905 if (!regex_IGNOREQUOTA)
6907 regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
6909 /* Handle local deliveries */
6913 DEBUG(D_deliver|D_transport)
6914 debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
6915 do_local_deliveries();
6916 disable_logging = FALSE;
6919 /* If queue_run_local is set, we do not want to attempt any remote deliveries,
6920 so just queue them all. */
6922 if (queue_run_local)
6925 address_item *addr = addr_remote;
6926 addr_remote = addr->next;
6928 addr->basic_errno = ERRNO_LOCAL_ONLY;
6929 addr->message = US"remote deliveries suppressed";
6930 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0);
6933 /* Handle remote deliveries */
6937 DEBUG(D_deliver|D_transport)
6938 debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
6940 /* Precompile some regex that are used to recognize parameters in response
6941 to an EHLO command, if they aren't already compiled. */
6945 /* Now sort the addresses if required, and do the deliveries. The yield of
6946 do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
6947 cannot be delivered in one transaction. */
6949 if (remote_sort_domains) sort_remote_deliveries();
6950 if (!do_remote_deliveries(FALSE))
6952 log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all "
6953 "be delivered in one transaction");
6954 fprintf(stderr, "delivery to smarthost failed (configuration problem)\n");
6956 final_yield = DELIVER_MUA_FAILED;
6957 addr_failed = addr_defer = NULL; /* So that we remove the message */
6958 goto DELIVERY_TIDYUP;
6961 /* See if any of the addresses that failed got put on the queue for delivery
6962 to their fallback hosts. We do it this way because often the same fallback
6963 host is used for many domains, so all can be sent in a single transaction
6964 (if appropriately configured). */
6966 if (addr_fallback && !mua_wrapper)
6968 DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n");
6969 addr_remote = addr_fallback;
6970 addr_fallback = NULL;
6971 if (remote_sort_domains) sort_remote_deliveries();
6972 do_remote_deliveries(TRUE);
6974 disable_logging = FALSE;
6978 /* All deliveries are now complete. Ignore SIGTERM during this tidying up
6979 phase, to minimize cases of half-done things. */
6982 debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
6984 /* Root privilege is no longer needed */
6986 exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying");
6988 set_process_info("tidying up after delivering %s", message_id);
6989 signal(SIGTERM, SIG_IGN);
6991 /* When we are acting as an MUA wrapper, the smtp transport will either have
6992 succeeded for all addresses, or failed them all in normal cases. However, there
6993 are some setup situations (e.g. when a named port does not exist) that cause an
6994 immediate exit with deferral of all addresses. Convert those into failures. We
6995 do not ever want to retry, nor do we want to send a bounce message. */
7001 address_item *addr, *nextaddr;
7002 for (addr = addr_defer; addr; addr = nextaddr)
7004 log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred "
7005 "delivery", addr->address);
7006 nextaddr = addr->next;
7007 addr->next = addr_failed;
7013 /* Now all should either have succeeded or failed. */
7016 final_yield = DELIVER_MUA_SUCCEEDED;
7020 uschar *s = addr_failed->user_message;
7022 if (!s) s = addr_failed->message;
7024 fprintf(stderr, "Delivery failed: ");
7025 if (addr_failed->basic_errno > 0)
7027 fprintf(stderr, "%s", strerror(addr_failed->basic_errno));
7028 if (s) fprintf(stderr, ": ");
7030 if ((host = addr_failed->host_used))
7031 fprintf(stderr, "H=%s [%s]: ", host->name, host->address);
7033 fprintf(stderr, "%s", CS s);
7034 else if (addr_failed->basic_errno <= 0)
7035 fprintf(stderr, "unknown error");
7036 fprintf(stderr, "\n");
7038 final_yield = DELIVER_MUA_FAILED;
7043 /* In a normal configuration, we now update the retry database. This is done in
7044 one fell swoop at the end in order not to keep opening and closing (and
7045 locking) the database. The code for handling retries is hived off into a
7046 separate module for convenience. We pass it the addresses of the various
7047 chains, because deferred addresses can get moved onto the failed chain if the
7048 retry cutoff time has expired for all alternative destinations. Bypass the
7049 updating of the database if the -N flag is set, which is a debugging thing that
7050 prevents actual delivery. */
7052 else if (!dont_deliver)
7053 retry_update(&addr_defer, &addr_failed, &addr_succeed);
7055 /* Send DSN for successful messages if requested */
7056 addr_senddsn = NULL;
7058 for (addr_dsntmp = addr_succeed; addr_dsntmp; addr_dsntmp = addr_dsntmp->next)
7060 /* af_ignore_error not honored here. it's not an error */
7061 DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n"
7062 "DSN: processing successful delivery address: %s\n"
7063 "DSN: Sender_address: %s\n"
7064 "DSN: orcpt: %s flags: %d\n"
7065 "DSN: envid: %s ret: %d\n"
7066 "DSN: Final recipient: %s\n"
7067 "DSN: Remote SMTP server supports DSN: %d\n",
7068 addr_dsntmp->router->name,
7069 addr_dsntmp->address,
7071 addr_dsntmp->dsn_orcpt, addr_dsntmp->dsn_flags,
7073 addr_dsntmp->address,
7074 addr_dsntmp->dsn_aware
7077 /* send report if next hop not DSN aware or a router flagged "last DSN hop"
7078 and a report was requested */
7079 if ( ( addr_dsntmp->dsn_aware != dsn_support_yes
7080 || addr_dsntmp->dsn_flags & rf_dsnlasthop
7082 && addr_dsntmp->dsn_flags & rf_dsnflags
7083 && addr_dsntmp->dsn_flags & rf_notify_success
7086 /* copy and relink address_item and send report with all of them at once later */
7087 address_item *addr_next;
7088 addr_next = addr_senddsn;
7089 addr_senddsn = store_get(sizeof(address_item));
7090 memcpy(addr_senddsn, addr_dsntmp, sizeof(address_item));
7091 addr_senddsn->next = addr_next;
7094 DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n");
7102 /* create exim process to send message */
7103 pid = child_open_exim(&fd);
7105 DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid);
7107 if (pid < 0) /* Creation of child failed */
7109 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
7110 "create child process to send failure message: %s", getpid(),
7111 getppid(), strerror(errno));
7113 DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n");
7115 else /* Creation of child succeeded */
7117 FILE *f = fdopen(fd, "wb");
7118 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
7120 transport_ctx tctx = {0};
7123 debug_printf("sending error message to: %s\n", sender_address);
7125 /* build unique id for MIME boundary */
7126 bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
7127 DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound);
7129 if (errors_reply_to)
7130 fprintf(f, "Reply-To: %s\n", errors_reply_to);
7132 fprintf(f, "Auto-Submitted: auto-generated\n"
7133 "From: Mail Delivery System <Mailer-Daemon@%s>\n"
7135 "Subject: Delivery Status Notification\n"
7136 "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n"
7137 "MIME-Version: 1.0\n\n"
7140 "Content-type: text/plain; charset=us-ascii\n\n"
7142 "This message was created automatically by mail delivery software.\n"
7143 " ----- The following addresses had successful delivery notifications -----\n",
7144 qualify_domain_sender, sender_address, bound, bound);
7146 for (addr_dsntmp = addr_senddsn; addr_dsntmp;
7147 addr_dsntmp = addr_dsntmp->next)
7148 fprintf(f, "<%s> (relayed %s)\n\n",
7149 addr_dsntmp->address,
7150 (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1
7151 ? "via non DSN router"
7152 : addr_dsntmp->dsn_aware == dsn_support_no
7153 ? "to non-DSN-aware mailer"
7154 : "via non \"Remote SMTP\" router"
7158 "Content-type: message/delivery-status\n\n"
7159 "Reporting-MTA: dns; %s\n",
7160 bound, smtp_active_hostname);
7163 { /* must be decoded from xtext: see RFC 3461:6.3a */
7165 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
7166 fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
7168 fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
7172 for (addr_dsntmp = addr_senddsn;
7174 addr_dsntmp = addr_dsntmp->next)
7176 if (addr_dsntmp->dsn_orcpt)
7177 fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt);
7179 fprintf(f, "Action: delivered\n"
7180 "Final-Recipient: rfc822;%s\n"
7182 addr_dsntmp->address);
7184 if (addr_dsntmp->host_used && addr_dsntmp->host_used->name)
7185 fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n",
7186 addr_dsntmp->host_used->name);
7188 fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n",
7189 (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 ? "DSN" : "SMTP");
7192 fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound);
7195 transport_filter_argv = NULL; /* Just in case */
7196 return_path = sender_address; /* In case not previously set */
7198 /* Write the original email out */
7200 tctx.options = topt_add_return_path | topt_no_body;
7201 transport_write_message(fileno(f), &tctx, 0);
7204 fprintf(f,"\n--%s--\n", bound);
7208 rc = child_close(pid, 0); /* Waits for child to close, no timeout */
7212 /* If any addresses failed, we must send a message to somebody, unless
7213 af_ignore_error is set, in which case no action is taken. It is possible for
7214 several messages to get sent if there are addresses with different
7221 uschar *logtod = tod_stamp(tod_log);
7223 address_item *handled_addr = NULL;
7224 address_item **paddr;
7225 address_item *msgchain = NULL;
7226 address_item **pmsgchain = &msgchain;
7228 /* There are weird cases when logging is disabled in the transport. However,
7229 there may not be a transport (address failed by a router). */
7231 disable_logging = FALSE;
7232 if (addr_failed->transport)
7233 disable_logging = addr_failed->transport->disable_logging;
7236 debug_printf("processing failed address %s\n", addr_failed->address);
7238 /* There are only two ways an address in a bounce message can get here:
7240 (1) When delivery was initially deferred, but has now timed out (in the call
7241 to retry_update() above). We can detect this by testing for
7242 af_retry_timedout. If the address does not have its own errors address,
7243 we arrange to ignore the error.
7245 (2) If delivery failures for bounce messages are being ignored. We can detect
7246 this by testing for af_ignore_error. This will also be set if a bounce
7247 message has been autothawed and the ignore_bounce_errors_after time has
7248 passed. It might also be set if a router was explicitly configured to
7249 ignore errors (errors_to = "").
7251 If neither of these cases obtains, something has gone wrong. Log the
7252 incident, but then ignore the error. */
7254 if (sender_address[0] == 0 && !addr_failed->prop.errors_address)
7256 if ( !testflag(addr_failed, af_retry_timedout)
7257 && !testflag(addr_failed, af_ignore_error))
7259 log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message "
7260 "failure is neither frozen nor ignored (it's been ignored)");
7262 setflag(addr_failed, af_ignore_error);
7265 /* If the first address on the list has af_ignore_error set, just remove
7266 it from the list, throw away any saved message file, log it, and
7267 mark the recipient done. */
7269 if ( testflag(addr_failed, af_ignore_error)
7270 || ( addr_failed->dsn_flags & rf_dsnflags
7271 && (addr_failed->dsn_flags & rf_notify_failure) != rf_notify_failure
7275 addr_failed = addr->next;
7276 if (addr->return_filename) Uunlink(addr->return_filename);
7278 log_write(0, LOG_MAIN, "%s%s%s%s: error ignored",
7280 !addr->parent ? US"" : US" <",
7281 !addr->parent ? US"" : addr->parent->address,
7282 !addr->parent ? US"" : US">");
7284 address_done(addr, logtod);
7285 child_done(addr, logtod);
7286 /* Panic-dies on error */
7287 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7290 /* Otherwise, handle the sending of a message. Find the error address for
7291 the first address, then send a message that includes all failed addresses
7292 that have the same error address. Note the bounce_recipient is a global so
7293 that it can be accesssed by $bounce_recipient while creating a customized
7298 if (!(bounce_recipient = addr_failed->prop.errors_address))
7299 bounce_recipient = sender_address;
7301 /* Make a subprocess to send a message */
7303 if ((pid = child_open_exim(&fd)) < 0)
7304 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
7305 "create child process to send failure message: %s", getpid(),
7306 getppid(), strerror(errno));
7308 /* Creation of child succeeded */
7315 uschar *bcc, *emf_text;
7316 FILE *f = fdopen(fd, "wb");
7318 BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0;
7319 int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) *
7320 DELIVER_IN_BUFFER_SIZE;
7322 uschar *dsnlimitmsg;
7323 uschar *dsnnotifyhdr;
7327 debug_printf("sending error message to: %s\n", bounce_recipient);
7329 /* Scan the addresses for all that have the same errors address, removing
7330 them from the addr_failed chain, and putting them on msgchain. */
7332 paddr = &addr_failed;
7333 for (addr = addr_failed; addr; addr = *paddr)
7334 if (Ustrcmp(bounce_recipient, addr->prop.errors_address
7335 ? addr->prop.errors_address : sender_address) == 0)
7336 { /* The same - dechain */
7337 *paddr = addr->next;
7340 pmsgchain = &(addr->next);
7343 paddr = &addr->next; /* Not the same; skip */
7345 /* Include X-Failed-Recipients: for automatic interpretation, but do
7346 not let any one header line get too long. We do this by starting a
7347 new header every 50 recipients. Omit any addresses for which the
7348 "hide_child" flag is set. */
7350 for (addr = msgchain; addr; addr = addr->next)
7352 if (testflag(addr, af_hide_child)) continue;
7360 ? "X-Failed-Recipients: "
7362 testflag(addr, af_pfr) && addr->parent
7363 ? string_printing(addr->parent->address)
7364 : string_printing(addr->address));
7366 if (rcount > 0) fprintf(f, "\n");
7368 /* Output the standard headers */
7370 if (errors_reply_to)
7371 fprintf(f, "Reply-To: %s\n", errors_reply_to);
7372 fprintf(f, "Auto-Submitted: auto-replied\n");
7374 fprintf(f, "To: %s\n", bounce_recipient);
7376 /* generate boundary string and output MIME-Headers */
7377 bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
7379 fprintf(f, "Content-Type: multipart/report;"
7380 " report-type=delivery-status; boundary=%s\n"
7381 "MIME-Version: 1.0\n",
7384 /* Open a template file if one is provided. Log failure to open, but
7385 carry on - default texts will be used. */
7387 if (bounce_message_file)
7388 if (!(emf = Ufopen(bounce_message_file, "rb")))
7389 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error "
7390 "message texts: %s", bounce_message_file, strerror(errno));
7392 /* Quietly copy to configured additional addresses if required. */
7394 if ((bcc = moan_check_errorcopy(bounce_recipient)))
7395 fprintf(f, "Bcc: %s\n", bcc);
7397 /* The texts for the message can be read from a template file; if there
7398 isn't one, or if it is too short, built-in texts are used. The first
7399 emf text is a Subject: and any other headers. */
7401 if ((emf_text = next_emf(emf, US"header")))
7402 fprintf(f, "%s\n", emf_text);
7404 fprintf(f, "Subject: Mail delivery failed%s\n\n",
7405 to_sender? ": returning message to sender" : "");
7407 /* output human readable part as text/plain section */
7409 "Content-type: text/plain; charset=us-ascii\n\n",
7412 if ((emf_text = next_emf(emf, US"intro")))
7413 fprintf(f, "%s", CS emf_text);
7417 /* This message has been reworded several times. It seems to be confusing to
7418 somebody, however it is worded. I have retreated to the original, simple
7420 "This message was created automatically by mail delivery software.\n");
7422 if (bounce_message_text)
7423 fprintf(f, "%s", CS bounce_message_text);
7426 "\nA message that you sent could not be delivered to one or more of its\n"
7427 "recipients. This is a permanent error. The following address(es) failed:\n");
7430 "\nA message sent by\n\n <%s>\n\n"
7431 "could not be delivered to one or more of its recipients. The following\n"
7432 "address(es) failed:\n", sender_address);
7436 /* Process the addresses, leaving them on the msgchain if they have a
7437 file name for a return message. (There has already been a check in
7438 post_process_one() for the existence of data in the message file.) A TRUE
7439 return from print_address_information() means that the address is not
7443 for (addr = msgchain; addr; addr = *paddr)
7445 if (print_address_information(addr, f, US" ", US"\n ", US""))
7446 print_address_error(addr, f, US"");
7448 /* End the final line for the address */
7452 /* Leave on msgchain if there's a return file. */
7454 if (addr->return_file >= 0)
7456 paddr = &(addr->next);
7460 /* Else save so that we can tick off the recipient when the
7465 *paddr = addr->next;
7466 addr->next = handled_addr;
7467 handled_addr = addr;
7473 /* Get the next text, whether we need it or not, so as to be
7474 positioned for the one after. */
7476 emf_text = next_emf(emf, US"generated text");
7478 /* If there were any file messages passed by the local transports,
7479 include them in the message. Then put the address on the handled chain.
7480 In the case of a batch of addresses that were all sent to the same
7481 transport, the return_file field in all of them will contain the same
7482 fd, and the return_filename field in the *last* one will be set (to the
7483 name of the file). */
7487 address_item *nextaddr;
7490 fprintf(f, "%s", CS emf_text);
7493 "The following text was generated during the delivery "
7494 "attempt%s:\n", (filecount > 1)? "s" : "");
7496 for (addr = msgchain; addr; addr = nextaddr)
7499 address_item *topaddr = addr;
7501 /* List all the addresses that relate to this file */
7504 while(addr) /* Insurance */
7506 print_address_information(addr, f, US"------ ", US"\n ",
7508 if (addr->return_filename) break;
7513 /* Now copy the file */
7515 if (!(fm = Ufopen(addr->return_filename, "rb")))
7516 fprintf(f, " +++ Exim error... failed to open text file: %s\n",
7520 while ((ch = fgetc(fm)) != EOF) fputc(ch, f);
7523 Uunlink(addr->return_filename);
7525 /* Can now add to handled chain, first fishing off the next
7526 address on the msgchain. */
7528 nextaddr = addr->next;
7529 addr->next = handled_addr;
7530 handled_addr = topaddr;
7535 /* output machine readable part */
7537 if (message_smtputf8)
7539 "Content-type: message/global-delivery-status\n\n"
7540 "Reporting-MTA: dns; %s\n",
7541 bound, smtp_active_hostname);
7545 "Content-type: message/delivery-status\n\n"
7546 "Reporting-MTA: dns; %s\n",
7547 bound, smtp_active_hostname);
7551 /* must be decoded from xtext: see RFC 3461:6.3a */
7553 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
7554 fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
7556 fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
7560 for (addr = handled_addr; addr; addr = addr->next)
7563 fprintf(f, "Action: failed\n"
7564 "Final-Recipient: rfc822;%s\n"
7567 if ((hu = addr->host_used) && hu->name)
7570 fprintf(f, "Remote-MTA: dns; %s\n", hu->name);
7571 #ifdef EXPERIMENTAL_DSN_INFO
7574 uschar * p = hu->port == 25
7575 ? US"" : string_sprintf(":%d", hu->port);
7576 fprintf(f, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p);
7578 if ((s = addr->smtp_greeting) && *s)
7579 fprintf(f, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s);
7580 if ((s = addr->helo_response) && *s)
7581 fprintf(f, "X-Remote-MTA-helo-response: X-str; %s\n", s);
7582 if ((s = addr->message) && *s)
7583 fprintf(f, "X-Exim-Diagnostic: X-str; %s\n", s);
7585 print_dsn_diagnostic_code(addr, f);
7590 /* Now copy the message, trying to give an intelligible comment if
7591 it is too long for it all to be copied. The limit isn't strictly
7592 applied because of the buffering. There is, however, an option
7593 to suppress copying altogether. */
7595 emf_text = next_emf(emf, US"copy");
7598 we ignore the intro text from template and add
7599 the text for bounce_return_size_limit at the end.
7601 bounce_return_message is ignored
7602 in case RET= is defined we honor these values
7603 otherwise bounce_return_body is honored.
7605 bounce_return_size_limit is always honored.
7608 fprintf(f, "--%s\n", bound);
7610 dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned";
7611 dsnnotifyhdr = NULL;
7612 topt = topt_add_return_path;
7614 /* RET=HDRS? top priority */
7615 if (dsn_ret == dsn_ret_hdrs)
7616 topt |= topt_no_body;
7619 struct stat statbuf;
7621 /* no full body return at all? */
7622 if (!bounce_return_body)
7624 topt |= topt_no_body;
7625 /* add header if we overrule RET=FULL */
7626 if (dsn_ret == dsn_ret_full)
7627 dsnnotifyhdr = dsnlimitmsg;
7629 /* line length limited... return headers only if oversize */
7630 /* size limited ... return headers only if limit reached */
7631 else if ( max_received_linelength > bounce_return_linesize_limit
7632 || ( bounce_return_size_limit > 0
7633 && fstat(deliver_datafile, &statbuf) == 0
7634 && statbuf.st_size > max
7637 topt |= topt_no_body;
7638 dsnnotifyhdr = dsnlimitmsg;
7643 if (message_smtputf8)
7644 fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n"
7645 : "Content-type: message/global\n\n",
7649 fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n"
7650 : "Content-type: message/rfc822\n\n",
7654 transport_filter_argv = NULL; /* Just in case */
7655 return_path = sender_address; /* In case not previously set */
7656 { /* Dummy transport for headers add */
7657 transport_ctx tctx = {0};
7658 transport_instance tb = {0};
7661 tctx.options = topt;
7662 tb.add_headers = dsnnotifyhdr;
7664 transport_write_message(fileno(f), &tctx, 0);
7668 /* we never add the final text. close the file */
7672 fprintf(f, "\n--%s--\n", bound);
7674 /* Close the file, which should send an EOF to the child process
7675 that is receiving the message. Wait for it to finish. */
7678 rc = child_close(pid, 0); /* Waits for child to close, no timeout */
7680 /* In the test harness, let the child do it's thing first. */
7682 if (running_in_test_harness) millisleep(500);
7684 /* If the process failed, there was some disaster in setting up the
7685 error message. Unless the message is very old, ensure that addr_defer
7686 is non-null, which will have the effect of leaving the message on the
7687 spool. The failed addresses will get tried again next time. However, we
7688 don't really want this to happen too often, so freeze the message unless
7689 there are some genuine deferred addresses to try. To do this we have
7690 to call spool_write_header() here, because with no genuine deferred
7691 addresses the normal code below doesn't get run. */
7696 if (now - received_time < retry_maximum_timeout && !addr_defer)
7698 addr_defer = (address_item *)(+1);
7699 deliver_freeze = TRUE;
7700 deliver_frozen_at = time(NULL);
7701 /* Panic-dies on error */
7702 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7705 deliver_msglog("Process failed (%d) when writing error message "
7706 "to %s%s", rc, bounce_recipient, s);
7707 log_write(0, LOG_MAIN, "Process failed (%d) when writing error message "
7708 "to %s%s", rc, bounce_recipient, s);
7711 /* The message succeeded. Ensure that the recipients that failed are
7712 now marked finished with on the spool and their parents updated. */
7716 for (addr = handled_addr; addr; addr = addr->next)
7718 address_done(addr, logtod);
7719 child_done(addr, logtod);
7721 /* Panic-dies on error */
7722 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7728 disable_logging = FALSE; /* In case left set */
7730 /* Come here from the mua_wrapper case if routing goes wrong */
7734 /* If there are now no deferred addresses, we are done. Preserve the
7735 message log if so configured, and we are using them. Otherwise, sling it.
7736 Then delete the message itself. */
7744 fname = spool_fname(US"msglog", message_subdir, id, US"");
7745 if (preserve_message_logs)
7748 uschar * moname = spool_fname(US"msglog.OLD", US"", id, US"");
7750 if ((rc = Urename(fname, moname)) < 0)
7752 (void)directory_make(spool_directory,
7753 spool_sname(US"msglog.OLD", US""),
7754 MSGLOG_DIRECTORY_MODE, TRUE);
7755 rc = Urename(fname, moname);
7758 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the "
7759 "msglog.OLD directory", fname);
7762 if (Uunlink(fname) < 0)
7763 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7764 fname, strerror(errno));
7767 /* Remove the two message files. */
7769 fname = spool_fname(US"input", message_subdir, id, US"-D");
7770 if (Uunlink(fname) < 0)
7771 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7772 fname, strerror(errno));
7773 fname = spool_fname(US"input", message_subdir, id, US"-H");
7774 if (Uunlink(fname) < 0)
7775 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7776 fname, strerror(errno));
7778 /* Log the end of this message, with queue time if requested. */
7780 if (LOGGING(queue_time_overall))
7781 log_write(0, LOG_MAIN, "Completed QT=%s",
7782 readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
7784 log_write(0, LOG_MAIN, "Completed");
7786 /* Unset deliver_freeze so that we won't try to move the spool files further down */
7787 deliver_freeze = FALSE;
7789 #ifndef DISABLE_EVENT
7790 (void) event_raise(event_action, US"msg:complete", NULL);
7794 /* If there are deferred addresses, we are keeping this message because it is
7795 not yet completed. Lose any temporary files that were catching output from
7796 pipes for any of the deferred addresses, handle one-time aliases, and see if
7797 the message has been on the queue for so long that it is time to send a warning
7798 message to the sender, unless it is a mailer-daemon. If all deferred addresses
7799 have the same domain, we can set deliver_domain for the expansion of
7800 delay_warning_ condition - if any of them are pipes, files, or autoreplies, use
7801 the parent's domain.
7803 If all the deferred addresses have an error number that indicates "retry time
7804 not reached", skip sending the warning message, because it won't contain the
7805 reason for the delay. It will get sent at the next real delivery attempt.
7806 However, if at least one address has tried, we'd better include all of them in
7809 If we can't make a process to send the message, don't worry.
7811 For mailing list expansions we want to send the warning message to the
7812 mailing list manager. We can't do a perfect job here, as some addresses may
7813 have different errors addresses, but if we take the errors address from
7814 each deferred address it will probably be right in most cases.
7816 If addr_defer == +1, it means there was a problem sending an error message
7817 for failed addresses, and there were no "real" deferred addresses. The value
7818 was set just to keep the message on the spool, so there is nothing to do here.
7821 else if (addr_defer != (address_item *)(+1))
7824 uschar *recipients = US"";
7825 BOOL delivery_attempted = FALSE;
7827 deliver_domain = testflag(addr_defer, af_pfr)
7828 ? addr_defer->parent->domain : addr_defer->domain;
7830 for (addr = addr_defer; addr; addr = addr->next)
7832 address_item *otaddr;
7834 if (addr->basic_errno > ERRNO_RETRY_BASE) delivery_attempted = TRUE;
7838 const uschar *d = testflag(addr, af_pfr)
7839 ? addr->parent->domain : addr->domain;
7841 /* The domain may be unset for an address that has never been routed
7842 because the system filter froze the message. */
7844 if (!d || Ustrcmp(d, deliver_domain) != 0)
7845 deliver_domain = NULL;
7848 if (addr->return_filename) Uunlink(addr->return_filename);
7850 /* Handle the case of one-time aliases. If any address in the ancestry
7851 of this one is flagged, ensure it is in the recipients list, suitably
7852 flagged, and that its parent is marked delivered. */
7854 for (otaddr = addr; otaddr; otaddr = otaddr->parent)
7855 if (otaddr->onetime_parent) break;
7860 int t = recipients_count;
7862 for (i = 0; i < recipients_count; i++)
7864 uschar *r = recipients_list[i].address;
7865 if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i;
7866 if (Ustrcmp(otaddr->address, r) == 0) break;
7869 /* Didn't find the address already in the list, and did find the
7870 ultimate parent's address in the list. After adding the recipient,
7871 update the errors address in the recipients list. */
7873 if (i >= recipients_count && t < recipients_count)
7875 DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n",
7876 otaddr->address, otaddr->parent->address);
7877 receive_add_recipient(otaddr->address, t);
7878 recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address;
7879 tree_add_nonrecipient(otaddr->parent->address);
7880 update_spool = TRUE;
7884 /* Except for error messages, ensure that either the errors address for
7885 this deferred address or, if there is none, the sender address, is on the
7886 list of recipients for a warning message. */
7888 if (sender_address[0] != 0)
7889 if (addr->prop.errors_address)
7891 if (Ustrstr(recipients, addr->prop.errors_address) == NULL)
7892 recipients = string_sprintf("%s%s%s", recipients,
7893 (recipients[0] == 0)? "" : ",", addr->prop.errors_address);
7897 if (Ustrstr(recipients, sender_address) == NULL)
7898 recipients = string_sprintf("%s%s%s", recipients,
7899 (recipients[0] == 0)? "" : ",", sender_address);
7903 /* Send a warning message if the conditions are right. If the condition check
7904 fails because of a lookup defer, there is nothing we can do. The warning
7905 is not sent. Another attempt will be made at the next delivery attempt (if
7909 && delivery_attempted
7910 && ( ((addr_defer->dsn_flags & rf_dsnflags) == 0)
7911 || (addr_defer->dsn_flags & rf_notify_delay) == rf_notify_delay
7913 && delay_warning[1] > 0
7914 && sender_address[0] != 0
7915 && ( !delay_warning_condition
7916 || expand_check_condition(delay_warning_condition,
7917 US"delay_warning", US"option")
7923 int queue_time = time(NULL) - received_time;
7925 /* When running in the test harness, there's an option that allows us to
7926 fudge this time so as to get repeatability of the tests. Take the first
7927 time off the list. In queue runs, the list pointer gets updated in the
7930 if (running_in_test_harness && fudged_queue_times[0] != 0)
7932 int qt = readconf_readtime(fudged_queue_times, '/', FALSE);
7935 DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n",
7936 fudged_queue_times);
7941 /* See how many warnings we should have sent by now */
7943 for (count = 0; count < delay_warning[1]; count++)
7944 if (queue_time < delay_warning[count+2]) break;
7946 show_time = delay_warning[count+1];
7948 if (count >= delay_warning[1])
7951 int last_gap = show_time;
7952 if (count > 1) last_gap -= delay_warning[count];
7953 extra = (queue_time - delay_warning[count+1])/last_gap;
7954 show_time += last_gap * extra;
7960 debug_printf("time on queue = %s\n", readconf_printtime(queue_time));
7961 debug_printf("warning counts: required %d done %d\n", count,
7965 /* We have computed the number of warnings there should have been by now.
7966 If there haven't been enough, send one, and up the count to what it should
7969 if (warning_count < count)
7973 pid_t pid = child_open_exim(&fd);
7979 FILE *f = fdopen(fd, "wb");
7981 transport_ctx tctx = {0};
7983 if (warn_message_file)
7984 if (!(wmf = Ufopen(warn_message_file, "rb")))
7985 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning "
7986 "message texts: %s", warn_message_file, strerror(errno));
7988 warnmsg_recipients = recipients;
7989 warnmsg_delay = queue_time < 120*60
7990 ? string_sprintf("%d minutes", show_time/60)
7991 : string_sprintf("%d hours", show_time/3600);
7993 if (errors_reply_to)
7994 fprintf(f, "Reply-To: %s\n", errors_reply_to);
7995 fprintf(f, "Auto-Submitted: auto-replied\n");
7997 fprintf(f, "To: %s\n", recipients);
7999 /* generated boundary string and output MIME-Headers */
8000 bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
8002 fprintf(f, "Content-Type: multipart/report;"
8003 " report-type=delivery-status; boundary=%s\n"
8004 "MIME-Version: 1.0\n",
8007 if ((wmf_text = next_emf(wmf, US"header")))
8008 fprintf(f, "%s\n", wmf_text);
8010 fprintf(f, "Subject: Warning: message %s delayed %s\n\n",
8011 message_id, warnmsg_delay);
8013 /* output human readable part as text/plain section */
8015 "Content-type: text/plain; charset=us-ascii\n\n",
8018 if ((wmf_text = next_emf(wmf, US"intro")))
8019 fprintf(f, "%s", CS wmf_text);
8023 "This message was created automatically by mail delivery software.\n");
8025 if (Ustrcmp(recipients, sender_address) == 0)
8027 "A message that you sent has not yet been delivered to one or more of its\n"
8028 "recipients after more than ");
8032 "A message sent by\n\n <%s>\n\n"
8033 "has not yet been delivered to one or more of its recipients after more than \n",
8036 fprintf(f, "%s on the queue on %s.\n\n"
8037 "The message identifier is: %s\n",
8038 warnmsg_delay, primary_hostname, message_id);
8040 for (h = header_list; h; h = h->next)
8041 if (strncmpic(h->text, US"Subject:", 8) == 0)
8042 fprintf(f, "The subject of the message is: %s", h->text + 9);
8043 else if (strncmpic(h->text, US"Date:", 5) == 0)
8044 fprintf(f, "The date of the message is: %s", h->text + 6);
8047 fprintf(f, "The address%s to which the message has not yet been "
8049 !addr_defer->next ? "" : "es",
8050 !addr_defer->next ? "is": "are");
8053 /* List the addresses, with error information if allowed */
8055 /* store addr_defer for machine readable part */
8056 address_item *addr_dsndefer = addr_defer;
8060 address_item *addr = addr_defer;
8061 addr_defer = addr->next;
8062 if (print_address_information(addr, f, US" ", US"\n ", US""))
8063 print_address_error(addr, f, US"Delay reason: ");
8072 if ((wmf_text = next_emf(wmf, US"final")))
8073 fprintf(f, "%s", CS wmf_text);
8079 "No action is required on your part. Delivery attempts will continue for\n"
8080 "some time, and this warning may be repeated at intervals if the message\n"
8081 "remains undelivered. Eventually the mail delivery software will give up,\n"
8082 "and when that happens, the message will be returned to you.\n");
8085 /* output machine readable part */
8086 fprintf(f, "\n--%s\n"
8087 "Content-type: message/delivery-status\n\n"
8088 "Reporting-MTA: dns; %s\n",
8090 smtp_active_hostname);
8095 /* must be decoded from xtext: see RFC 3461:6.3a */
8097 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
8098 fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid);
8100 fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
8104 for ( ; addr_dsndefer; addr_dsndefer = addr_dsndefer->next)
8106 if (addr_dsndefer->dsn_orcpt)
8107 fprintf(f, "Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt);
8109 fprintf(f, "Action: delayed\n"
8110 "Final-Recipient: rfc822;%s\n"
8112 addr_dsndefer->address);
8113 if (addr_dsndefer->host_used && addr_dsndefer->host_used->name)
8115 fprintf(f, "Remote-MTA: dns; %s\n",
8116 addr_dsndefer->host_used->name);
8117 print_dsn_diagnostic_code(addr_dsndefer, f);
8123 "Content-type: text/rfc822-headers\n\n",
8127 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
8128 tctx.options = topt_add_return_path | topt_no_body;
8129 transport_filter_argv = NULL; /* Just in case */
8130 return_path = sender_address; /* In case not previously set */
8132 /* Write the original email out */
8133 transport_write_message(fileno(f), &tctx, 0);
8136 fprintf(f,"\n--%s--\n", bound);
8140 /* Close and wait for child process to complete, without a timeout.
8141 If there's an error, don't update the count. */
8144 if (child_close(pid, 0) == 0)
8146 warning_count = count;
8147 update_spool = TRUE; /* Ensure spool rewritten */
8153 /* Clear deliver_domain */
8155 deliver_domain = NULL;
8157 /* If this was a first delivery attempt, unset the first time flag, and
8158 ensure that the spool gets updated. */
8160 if (deliver_firsttime)
8162 deliver_firsttime = FALSE;
8163 update_spool = TRUE;
8166 /* If delivery was frozen and freeze_tell is set, generate an appropriate
8167 message, unless the message is a local error message (to avoid loops). Then
8168 log the freezing. If the text in "frozen_info" came from a system filter,
8169 it has been escaped into printing characters so as not to mess up log lines.
8170 For the "tell" message, we turn \n back into newline. Also, insert a newline
8171 near the start instead of the ": " string. */
8175 if (freeze_tell && freeze_tell[0] != 0 && !local_error_message)
8177 uschar *s = string_copy(frozen_info);
8178 uschar *ss = Ustrstr(s, " by the system filter: ");
8189 if (*ss == '\\' && ss[1] == 'n')
8196 moan_tell_someone(freeze_tell, addr_defer, US"Message frozen",
8197 "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id,
8201 /* Log freezing just before we update the -H file, to minimize the chance
8202 of a race problem. */
8204 deliver_msglog("*** Frozen%s\n", frozen_info);
8205 log_write(0, LOG_MAIN, "Frozen%s", frozen_info);
8208 /* If there have been any updates to the non-recipients list, or other things
8209 that get written to the spool, we must now update the spool header file so
8210 that it has the right information for the next delivery attempt. If there
8211 was more than one address being delivered, the header_change update is done
8212 earlier, in case one succeeds and then something crashes. */
8215 debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n",
8216 update_spool, header_rewritten);
8218 if (update_spool || header_rewritten)
8219 /* Panic-dies on error */
8220 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
8223 /* Finished with the message log. If the message is complete, it will have
8224 been unlinked or renamed above. */
8226 if (message_logs) (void)fclose(message_log);
8228 /* Now we can close and remove the journal file. Its only purpose is to record
8229 successfully completed deliveries asap so that this information doesn't get
8230 lost if Exim (or the machine) crashes. Forgetting about a failed delivery is
8231 not serious, as trying it again is not harmful. The journal might not be open
8232 if all addresses were deferred at routing or directing. Nevertheless, we must
8233 remove it if it exists (may have been lying around from a crash during the
8234 previous delivery attempt). We don't remove the journal if a delivery
8235 subprocess failed to pass back delivery information; this is controlled by
8236 the remove_journal flag. When the journal is left, we also don't move the
8237 message off the main spool if frozen and the option is set. It should get moved
8238 at the next attempt, after the journal has been inspected. */
8240 if (journal_fd >= 0) (void)close(journal_fd);
8244 uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
8246 if (Uunlink(fname) < 0 && errno != ENOENT)
8247 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", fname,
8250 /* Move the message off the spool if reqested */
8252 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
8253 if (deliver_freeze && move_frozen_messages)
8254 (void)spool_move_message(id, message_subdir, US"", US"F");
8258 /* Closing the data file frees the lock; if the file has been unlinked it
8259 will go away. Otherwise the message becomes available for another process
8262 (void)close(deliver_datafile);
8263 deliver_datafile = -1;
8264 DEBUG(D_deliver) debug_printf("end delivery of %s\n", id);
8266 /* It is unlikely that there will be any cached resources, since they are
8267 released after routing, and in the delivery subprocesses. However, it's
8268 possible for an expansion for something afterwards (for example,
8269 expand_check_condition) to do a lookup. We must therefore be sure everything is
8273 acl_where = ACL_WHERE_UNKNOWN;
8282 if (!regex_PIPELINING) regex_PIPELINING =
8283 regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE);
8285 if (!regex_SIZE) regex_SIZE =
8286 regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE);
8288 if (!regex_AUTH) regex_AUTH =
8289 regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)",
8293 if (!regex_STARTTLS) regex_STARTTLS =
8294 regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE);
8297 if (!regex_CHUNKING) regex_CHUNKING =
8298 regex_must_compile(US"\\n250[\\s\\-]CHUNKING(\\s|\\n|$)", FALSE, TRUE);
8300 #ifndef DISABLE_PRDR
8301 if (!regex_PRDR) regex_PRDR =
8302 regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE);
8306 if (!regex_UTF8) regex_UTF8 =
8307 regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE);
8310 if (!regex_DSN) regex_DSN =
8311 regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE);
8313 if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA =
8314 regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
8319 deliver_get_sender_address (uschar * id)
8322 uschar * new_sender_address,
8323 * save_sender_address;
8324 BOOL save_qr = queue_running;
8327 /* make spool_open_datafile non-noisy on fail */
8329 queue_running = TRUE;
8331 /* Side effect: message_subdir is set for the (possibly split) spool directory */
8333 deliver_datafile = spool_open_datafile(id);
8334 queue_running = save_qr;
8335 if (deliver_datafile < 0)
8338 /* Save and restore the global sender_address. I'm not sure if we should
8339 not save/restore all the other global variables too, because
8340 spool_read_header() may change all of them. But OTOH, when this
8341 deliver_get_sender_address() gets called, the current message is done
8342 already and nobody needs the globals anymore. (HS12, 2015-08-21) */
8344 spoolname = string_sprintf("%s-H", id);
8345 save_sender_address = sender_address;
8347 rc = spool_read_header(spoolname, TRUE, TRUE);
8349 new_sender_address = sender_address;
8350 sender_address = save_sender_address;
8352 if (rc != spool_read_OK)
8355 assert(new_sender_address);
8357 (void)close(deliver_datafile);
8358 deliver_datafile = -1;
8360 return new_sender_address;
8365 /* End of deliver.c */