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;
79 static uschar spoolname[PATH_MAX];
83 /*************************************************
84 * Make a new address item *
85 *************************************************/
87 /* This function gets the store and initializes with default values. The
88 transport_return value defaults to DEFER, so that any unexpected failure to
89 deliver does not wipe out the message. The default unique string is set to a
90 copy of the address, so that its domain can be lowercased.
93 address the RFC822 address string
94 copy force a copy of the address
96 Returns: a pointer to an initialized address_item
100 deliver_make_addr(uschar *address, BOOL copy)
102 address_item *addr = store_get(sizeof(address_item));
103 *addr = address_defaults;
104 if (copy) address = string_copy(address);
105 addr->address = address;
106 addr->unique = string_copy(address);
113 /*************************************************
114 * Set expansion values for an address *
115 *************************************************/
117 /* Certain expansion variables are valid only when handling an address or
118 address list. This function sets them up or clears the values, according to its
122 addr the address in question, or NULL to clear values
127 deliver_set_expansions(address_item *addr)
131 const uschar ***p = address_expansions;
132 while (*p) **p++ = NULL;
136 /* Exactly what gets set depends on whether there is one or more addresses, and
137 what they contain. These first ones are always set, taking their values from
138 the first address. */
140 if (!addr->host_list)
142 deliver_host = deliver_host_address = US"";
143 deliver_host_port = 0;
147 deliver_host = addr->host_list->name;
148 deliver_host_address = addr->host_list->address;
149 deliver_host_port = addr->host_list->port;
152 deliver_recipients = addr;
153 deliver_address_data = addr->prop.address_data;
154 deliver_domain_data = addr->prop.domain_data;
155 deliver_localpart_data = addr->prop.localpart_data;
157 /* These may be unset for multiple addresses */
159 deliver_domain = addr->domain;
160 self_hostname = addr->self_hostname;
162 #ifdef EXPERIMENTAL_BRIGHTMAIL
163 bmi_deliver = 1; /* deliver by default */
164 bmi_alt_location = NULL;
165 bmi_base64_verdict = NULL;
166 bmi_base64_tracker_verdict = NULL;
169 /* If there's only one address we can set everything. */
173 address_item *addr_orig;
175 deliver_localpart = addr->local_part;
176 deliver_localpart_prefix = addr->prefix;
177 deliver_localpart_suffix = addr->suffix;
179 for (addr_orig = addr; addr_orig->parent; addr_orig = addr_orig->parent) ;
180 deliver_domain_orig = addr_orig->domain;
182 /* Re-instate any prefix and suffix in the original local part. In all
183 normal cases, the address will have a router associated with it, and we can
184 choose the caseful or caseless version accordingly. However, when a system
185 filter sets up a pipe, file, or autoreply delivery, no router is involved.
186 In this case, though, there won't be any prefix or suffix to worry about. */
188 deliver_localpart_orig = !addr_orig->router
189 ? addr_orig->local_part
190 : addr_orig->router->caseful_local_part
191 ? addr_orig->cc_local_part
192 : addr_orig->lc_local_part;
194 /* If there's a parent, make its domain and local part available, and if
195 delivering to a pipe or file, or sending an autoreply, get the local
196 part from the parent. For pipes and files, put the pipe or file string
197 into address_pipe and address_file. */
201 deliver_domain_parent = addr->parent->domain;
202 deliver_localpart_parent = !addr->parent->router
203 ? addr->parent->local_part
204 : addr->parent->router->caseful_local_part
205 ? addr->parent->cc_local_part
206 : addr->parent->lc_local_part;
208 /* File deliveries have their own flag because they need to be picked out
209 as special more often. */
211 if (testflag(addr, af_pfr))
213 if (testflag(addr, af_file)) address_file = addr->local_part;
214 else if (deliver_localpart[0] == '|') address_pipe = addr->local_part;
215 deliver_localpart = addr->parent->local_part;
216 deliver_localpart_prefix = addr->parent->prefix;
217 deliver_localpart_suffix = addr->parent->suffix;
221 #ifdef EXPERIMENTAL_BRIGHTMAIL
222 /* Set expansion variables related to Brightmail AntiSpam */
223 bmi_base64_verdict = bmi_get_base64_verdict(deliver_localpart_orig, deliver_domain_orig);
224 bmi_base64_tracker_verdict = bmi_get_base64_tracker_verdict(bmi_base64_verdict);
225 /* get message delivery status (0 - don't deliver | 1 - deliver) */
226 bmi_deliver = bmi_get_delivery_status(bmi_base64_verdict);
227 /* if message is to be delivered, get eventual alternate location */
228 if (bmi_deliver == 1)
229 bmi_alt_location = bmi_get_alt_location(bmi_base64_verdict);
234 /* For multiple addresses, don't set local part, and leave the domain and
235 self_hostname set only if it is the same for all of them. It is possible to
236 have multiple pipe and file addresses, but only when all addresses have routed
237 to the same pipe or file. */
242 if (testflag(addr, af_pfr))
244 if (testflag(addr, af_file)) address_file = addr->local_part;
245 else if (addr->local_part[0] == '|') address_pipe = addr->local_part;
247 for (addr2 = addr->next; addr2; addr2 = addr2->next)
249 if (deliver_domain && Ustrcmp(deliver_domain, addr2->domain) != 0)
250 deliver_domain = NULL;
252 && ( !addr2->self_hostname
253 || Ustrcmp(self_hostname, addr2->self_hostname) != 0
255 self_hostname = NULL;
256 if (!deliver_domain && !self_hostname) break;
264 /*************************************************
265 * Open a msglog file *
266 *************************************************/
268 /* This function is used both for normal message logs, and for files in the
269 msglog directory that are used to catch output from pipes. Try to create the
270 directory if it does not exist. From release 4.21, normal message logs should
271 be created when the message is received.
274 filename the file name
275 mode the mode required
276 error used for saying what failed
278 Returns: a file descriptor, or -1 (with errno set)
282 open_msglog_file(uschar *filename, int mode, uschar **error)
284 int fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode);
286 if (fd < 0 && errno == ENOENT)
289 sprintf(CS temp, "msglog/%s", message_subdir);
290 if (message_subdir[0] == 0) temp[6] = 0;
291 (void)directory_make(spool_directory, temp, MSGLOG_DIRECTORY_MODE, TRUE);
292 fd = Uopen(filename, O_WRONLY|O_APPEND|O_CREAT, mode);
295 /* Set the close-on-exec flag and change the owner to the exim uid/gid (this
296 function is called as root). Double check the mode, because the group setting
297 doesn't always get set automatically. */
301 (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
302 if (fchown(fd, exim_uid, exim_gid) < 0)
307 if (fchmod(fd, mode) < 0)
313 else *error = US"create";
321 /*************************************************
322 * Write to msglog if required *
323 *************************************************/
325 /* Write to the message log, if configured. This function may also be called
329 format a string format
335 deliver_msglog(const char *format, ...)
338 if (!message_logs) return;
339 va_start(ap, format);
340 vfprintf(message_log, format, ap);
348 /*************************************************
349 * Replicate status for batch *
350 *************************************************/
352 /* When a transport handles a batch of addresses, it may treat them
353 individually, or it may just put the status in the first one, and return FALSE,
354 requesting that the status be copied to all the others externally. This is the
355 replication function. As well as the status, it copies the transport pointer,
356 which may have changed if appendfile passed the addresses on to a different
359 Argument: pointer to the first address in a chain
364 replicate_status(address_item *addr)
367 for (addr2 = addr->next; addr2; addr2 = addr2->next)
369 addr2->transport = addr->transport;
370 addr2->transport_return = addr->transport_return;
371 addr2->basic_errno = addr->basic_errno;
372 addr2->more_errno = addr->more_errno;
373 addr2->special_action = addr->special_action;
374 addr2->message = addr->message;
375 addr2->user_message = addr->user_message;
381 /*************************************************
382 * Compare lists of hosts *
383 *************************************************/
385 /* This function is given two pointers to chains of host items, and it yields
386 TRUE if the lists refer to the same hosts in the same order, except that
388 (1) Multiple hosts with the same non-negative MX values are permitted to appear
389 in different orders. Round-robinning nameservers can cause this to happen.
391 (2) Multiple hosts with the same negative MX values less than MX_NONE are also
392 permitted to appear in different orders. This is caused by randomizing
395 This enables Exim to use a single SMTP transaction for sending to two entirely
396 different domains that happen to end up pointing at the same hosts.
399 one points to the first host list
400 two points to the second host list
402 Returns: TRUE if the lists refer to the same host set
406 same_hosts(host_item *one, host_item *two)
410 if (Ustrcmp(one->name, two->name) != 0)
413 host_item *end_one = one;
414 host_item *end_two = two;
416 /* Batch up only if there was no MX and the list was not randomized */
418 if (mx == MX_NONE) return FALSE;
420 /* Find the ends of the shortest sequence of identical MX values */
422 while ( end_one->next && end_one->next->mx == mx
423 && end_two->next && end_two->next->mx == mx)
425 end_one = end_one->next;
426 end_two = end_two->next;
429 /* If there aren't any duplicates, there's no match. */
431 if (end_one == one) return FALSE;
433 /* For each host in the 'one' sequence, check that it appears in the 'two'
434 sequence, returning FALSE if not. */
439 for (hi = two; hi != end_two->next; hi = hi->next)
440 if (Ustrcmp(one->name, hi->name) == 0) break;
441 if (hi == end_two->next) return FALSE;
442 if (one == end_one) break;
446 /* All the hosts in the 'one' sequence were found in the 'two' sequence.
447 Ensure both are pointing at the last host, and carry on as for equality. */
458 /* True if both are NULL */
465 /*************************************************
466 * Compare header lines *
467 *************************************************/
469 /* This function is given two pointers to chains of header items, and it yields
470 TRUE if they are the same header texts in the same order.
473 one points to the first header list
474 two points to the second header list
476 Returns: TRUE if the lists refer to the same header set
480 same_headers(header_line *one, header_line *two)
482 for (;; one = one->next, two = two->next)
484 if (one == two) return TRUE; /* Includes the case where both NULL */
485 if (!one || !two) return FALSE;
486 if (Ustrcmp(one->text, two->text) != 0) return FALSE;
492 /*************************************************
493 * Compare string settings *
494 *************************************************/
496 /* This function is given two pointers to strings, and it returns
497 TRUE if they are the same pointer, or if the two strings are the same.
500 one points to the first string
501 two points to the second string
503 Returns: TRUE or FALSE
507 same_strings(uschar *one, uschar *two)
509 if (one == two) return TRUE; /* Includes the case where both NULL */
510 if (!one || !two) return FALSE;
511 return (Ustrcmp(one, two) == 0);
516 /*************************************************
517 * Compare uid/gid for addresses *
518 *************************************************/
520 /* This function is given a transport and two addresses. It yields TRUE if the
521 uid/gid/initgroups settings for the two addresses are going to be the same when
526 addr1 the first address
527 addr2 the second address
529 Returns: TRUE or FALSE
533 same_ugid(transport_instance *tp, address_item *addr1, address_item *addr2)
535 if ( !tp->uid_set && !tp->expand_uid
536 && !tp->deliver_as_creator
537 && ( testflag(addr1, af_uid_set) != testflag(addr2, af_gid_set)
538 || ( testflag(addr1, af_uid_set)
539 && ( addr1->uid != addr2->uid
540 || testflag(addr1, af_initgroups) != testflag(addr2, af_initgroups)
544 if ( !tp->gid_set && !tp->expand_gid
545 && ( testflag(addr1, af_gid_set) != testflag(addr2, af_gid_set)
546 || ( testflag(addr1, af_gid_set)
547 && addr1->gid != addr2->gid
557 /*************************************************
558 * Record that an address is complete *
559 *************************************************/
561 /* This function records that an address is complete. This is straightforward
562 for most addresses, where the unique address is just the full address with the
563 domain lower cased. For homonyms (addresses that are the same as one of their
564 ancestors) their are complications. Their unique addresses have \x\ prepended
565 (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and
568 Exim used to record the unique addresses of homonyms as "complete". This,
569 however, fails when the pattern of redirection varies over time (e.g. if taking
570 unseen copies at only some times of day) because the prepended numbers may vary
571 from one delivery run to the next. This problem is solved by never recording
572 prepended unique addresses as complete. Instead, when a homonymic address has
573 actually been delivered via a transport, we record its basic unique address
574 followed by the name of the transport. This is checked in subsequent delivery
575 runs whenever an address is routed to a transport.
577 If the completed address is a top-level one (has no parent, which means it
578 cannot be homonymic) we also add the original address to the non-recipients
579 tree, so that it gets recorded in the spool file and therefore appears as
580 "done" in any spool listings. The original address may differ from the unique
581 address in the case of the domain.
583 Finally, this function scans the list of duplicates, marks as done any that
584 match this address, and calls child_done() for their ancestors.
587 addr address item that has been completed
588 now current time as a string
594 address_done(address_item *addr, uschar *now)
598 update_spool = TRUE; /* Ensure spool gets updated */
600 /* Top-level address */
604 tree_add_nonrecipient(addr->unique);
605 tree_add_nonrecipient(addr->address);
608 /* Homonymous child address */
610 else if (testflag(addr, af_homonym))
613 tree_add_nonrecipient(
614 string_sprintf("%s/%s", addr->unique + 3, addr->transport->name));
617 /* Non-homonymous child address */
619 else tree_add_nonrecipient(addr->unique);
621 /* Check the list of duplicate addresses and ensure they are now marked
624 for (dup = addr_duplicate; dup; dup = dup->next)
625 if (Ustrcmp(addr->unique, dup->unique) == 0)
627 tree_add_nonrecipient(dup->unique);
628 child_done(dup, now);
635 /*************************************************
636 * Decrease counts in parents and mark done *
637 *************************************************/
639 /* This function is called when an address is complete. If there is a parent
640 address, its count of children is decremented. If there are still other
641 children outstanding, the function exits. Otherwise, if the count has become
642 zero, address_done() is called to mark the parent and its duplicates complete.
643 Then loop for any earlier ancestors.
646 addr points to the completed address item
647 now the current time as a string, for writing to the message log
653 child_done(address_item *addr, uschar *now)
659 if ((addr->child_count -= 1) > 0) return; /* Incomplete parent */
660 address_done(addr, now);
662 /* Log the completion of all descendents only when there is no ancestor with
663 the same original address. */
665 for (aa = addr->parent; aa; aa = aa->parent)
666 if (Ustrcmp(aa->address, addr->address) == 0) break;
669 deliver_msglog("%s %s: children all complete\n", now, addr->address);
670 DEBUG(D_deliver) debug_printf("%s: children all complete\n", addr->address);
676 /*************************************************
677 * Delivery logging support functions *
678 *************************************************/
680 /* The LOGGING() checks in d_log_interface() are complicated for backwards
681 compatibility. When outgoing interface logging was originally added, it was
682 conditional on just incoming_interface (which is off by default). The
683 outgoing_interface option is on by default to preserve this behaviour, but
684 you can enable incoming_interface and disable outgoing_interface to get I=
685 fields on incoming lines only.
688 s The log line buffer
689 sizep Pointer to the buffer size
690 ptrp Pointer to current index into buffer
691 addr The address to be logged
693 Returns: New value for s
697 d_log_interface(uschar *s, int *sizep, int *ptrp)
699 if (LOGGING(incoming_interface) && LOGGING(outgoing_interface)
700 && sending_ip_address)
702 s = string_append(s, sizep, ptrp, 2, US" I=[", sending_ip_address);
703 s = LOGGING(outgoing_port)
704 ? string_append(s, sizep, ptrp, 2, US"]:",
705 string_sprintf("%d", sending_port))
706 : string_catn(s, sizep, ptrp, US"]", 1);
714 d_hostlog(uschar * s, int * sp, int * pp, address_item * addr)
716 host_item * h = addr->host_used;
718 s = string_append(s, sp, pp, 2, US" H=", h->name);
720 if (LOGGING(dnssec) && h->dnssec == DS_YES)
721 s = string_cat(s, sp, pp, US" DS");
723 s = string_append(s, sp, pp, 3, US" [", h->address, US"]");
725 if (LOGGING(outgoing_port))
726 s = string_append(s, sp, pp, 2, US":", string_sprintf("%d", h->port));
729 if (LOGGING(proxy) && proxy_local_address)
731 s = string_append(s, sp, pp, 3, US" PRX=[", proxy_local_address, US"]");
732 if (LOGGING(outgoing_port))
733 s = string_append(s, sp, pp, 2, US":", string_sprintf("%d",
738 return d_log_interface(s, sp, pp);
747 d_tlslog(uschar * s, int * sizep, int * ptrp, address_item * addr)
749 if (LOGGING(tls_cipher) && addr->cipher)
750 s = string_append(s, sizep, ptrp, 2, US" X=", addr->cipher);
751 if (LOGGING(tls_certificate_verified) && addr->cipher)
752 s = string_append(s, sizep, ptrp, 2, US" CV=",
753 testflag(addr, af_cert_verified)
755 #ifdef EXPERIMENTAL_DANE
756 testflag(addr, af_dane_verified)
762 if (LOGGING(tls_peerdn) && addr->peerdn)
763 s = string_append(s, sizep, ptrp, 3, US" DN=\"",
764 string_printing(addr->peerdn), US"\"");
772 #ifndef DISABLE_EVENT
774 event_raise(uschar * action, const uschar * event, uschar * ev_data)
780 debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n",
782 action, deliver_host_address);
785 event_data = ev_data;
787 if (!(s = expand_string(action)) && *expand_string_message)
788 log_write(0, LOG_MAIN|LOG_PANIC,
789 "failed to expand event_action %s in %s: %s\n",
790 event, transport_name, expand_string_message);
792 event_name = event_data = NULL;
794 /* If the expansion returns anything but an empty string, flag for
795 the caller to modify his normal processing
800 debug_printf("Event(%s): event_action returned \"%s\"\n", event, s);
808 msg_event_raise(const uschar * event, const address_item * addr)
810 const uschar * save_domain = deliver_domain;
811 uschar * save_local = deliver_localpart;
812 const uschar * save_host = deliver_host;
813 const uschar * save_address = deliver_host_address;
814 const int save_port = deliver_host_port;
816 if (!addr->transport)
819 router_name = addr->router ? addr->router->name : NULL;
820 transport_name = addr->transport->name;
821 deliver_domain = addr->domain;
822 deliver_localpart = addr->local_part;
823 deliver_host = addr->host_used ? addr->host_used->name : NULL;
825 (void) event_raise(addr->transport->event_action, event,
827 || Ustrcmp(addr->transport->driver_name, "smtp") == 0
828 || Ustrcmp(addr->transport->driver_name, "lmtp") == 0
829 ? addr->message : NULL);
831 deliver_host_port = save_port;
832 deliver_host_address = save_address;
833 deliver_host = save_host;
834 deliver_localpart = save_local;
835 deliver_domain = save_domain;
836 router_name = transport_name = NULL;
838 #endif /*DISABLE_EVENT*/
842 /* If msg is NULL this is a delivery log and logchar is used. Otherwise
843 this is a nonstandard call; no two-character delivery flag is written
844 but sender-host and sender are prefixed and "msg" is inserted in the log line.
847 flags passed to log_write()
850 delivery_log(int flags, address_item * addr, int logchar, uschar * msg)
853 int size = 256; /* Used for a temporary, */
854 int ptr = 0; /* expanding buffer, for */
855 uschar *s; /* building log lines; */
856 void *reset_point; /* released afterwards. */
858 /* Log the delivery on the main log. We use an extensible string to build up
859 the log line, and reset the store afterwards. Remote deliveries should always
860 have a pointer to the host item that succeeded; local deliveries can have a
861 pointer to a single host item in their host list, for use by the transport. */
863 #ifndef DISABLE_EVENT
864 /* presume no successful remote delivery */
865 lookup_dnssec_authenticated = NULL;
868 s = reset_point = store_get(size);
870 log_address = string_log_address(addr, LOGGING(all_parents), TRUE);
872 s = string_append(s, &size, &ptr, 3, host_and_ident(TRUE), US" ", log_address);
876 s = string_append(s, &size, &ptr, 2, US"> ", log_address);
879 if (LOGGING(sender_on_delivery) || msg)
880 s = string_append(s, &size, &ptr, 3, US" F=<",
882 testflag(addr, af_utf8_downcvt)
883 ? string_address_utf8_to_alabel(sender_address, NULL)
889 #ifdef EXPERIMENTAL_SRS
890 if(addr->prop.srs_sender)
891 s = string_append(s, &size, &ptr, 3, US" SRS=<", addr->prop.srs_sender, US">");
894 /* You might think that the return path must always be set for a successful
895 delivery; indeed, I did for some time, until this statement crashed. The case
896 when it is not set is for a delivery to /dev/null which is optimised by not
899 if (used_return_path && LOGGING(return_path_on_delivery))
900 s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
903 s = string_append(s, &size, &ptr, 2, US" ", msg);
905 /* For a delivery from a system filter, there may not be a router */
907 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
909 s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
911 if (LOGGING(delivery_size))
912 s = string_append(s, &size, &ptr, 2, US" S=",
913 string_sprintf("%d", transport_count));
917 if (addr->transport->info->local)
920 s = string_append(s, &size, &ptr, 2, US" H=", addr->host_list->name);
921 s = d_log_interface(s, &size, &ptr);
922 if (addr->shadow_message)
923 s = string_cat(s, &size, &ptr, addr->shadow_message);
926 /* Remote delivery */
932 s = d_hostlog(s, &size, &ptr, addr);
933 if (continue_sequence > 1)
934 s = string_catn(s, &size, &ptr, US"*", 1);
936 #ifndef DISABLE_EVENT
937 deliver_host_address = addr->host_used->address;
938 deliver_host_port = addr->host_used->port;
939 deliver_host = addr->host_used->name;
941 /* DNS lookup status */
942 lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes"
943 : addr->host_used->dnssec==DS_NO ? US"no"
949 s = d_tlslog(s, &size, &ptr, addr);
952 if (addr->authenticator)
954 s = string_append(s, &size, &ptr, 2, US" A=", addr->authenticator);
957 s = string_append(s, &size, &ptr, 2, US":", addr->auth_id);
958 if (LOGGING(smtp_mailauth) && addr->auth_sndr)
959 s = string_append(s, &size, &ptr, 2, US":", addr->auth_sndr);
964 if (addr->flags & af_prdr_used)
965 s = string_append(s, &size, &ptr, 1, US" PRDR");
969 /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */
971 if ( LOGGING(smtp_confirmation)
973 && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0)
977 unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024;
978 uschar *p = big_buffer;
979 uschar *ss = addr->message;
981 for (i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */
983 if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */
988 s = string_append(s, &size, &ptr, 2, US" C=", big_buffer);
991 /* Time on queue and actual time taken to deliver */
993 if (LOGGING(queue_time))
994 s = string_append(s, &size, &ptr, 2, US" QT=",
995 readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
997 if (LOGGING(deliver_time))
998 s = string_append(s, &size, &ptr, 2, US" DT=",
999 readconf_printtime(addr->more_errno));
1001 /* string_cat() always leaves room for the terminator. Release the
1002 store we used to build the line after writing it. */
1005 log_write(0, flags, "%s", s);
1007 #ifndef DISABLE_EVENT
1008 if (!msg) msg_event_raise(US"msg:delivery", addr);
1011 store_reset(reset_point);
1017 /*************************************************
1018 * Actions at the end of handling an address *
1019 *************************************************/
1021 /* This is a function for processing a single address when all that can be done
1022 with it has been done.
1025 addr points to the address block
1026 result the result of the delivery attempt
1027 logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC)
1028 driver_type indicates which type of driver (transport, or router) was last
1029 to process the address
1030 logchar '=' or '-' for use when logging deliveries with => or ->
1036 post_process_one(address_item *addr, int result, int logflags, int driver_type,
1039 uschar *now = tod_stamp(tod_log);
1040 uschar *driver_kind = NULL;
1041 uschar *driver_name = NULL;
1042 uschar *log_address;
1044 int size = 256; /* Used for a temporary, */
1045 int ptr = 0; /* expanding buffer, for */
1046 uschar *s; /* building log lines; */
1047 void *reset_point; /* released afterwards. */
1049 DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result);
1051 /* Set up driver kind and name for logging. Disable logging if the router or
1052 transport has disabled it. */
1054 if (driver_type == DTYPE_TRANSPORT)
1056 if (addr->transport)
1058 driver_name = addr->transport->name;
1059 driver_kind = US" transport";
1060 disable_logging = addr->transport->disable_logging;
1062 else driver_kind = US"transporting";
1064 else if (driver_type == DTYPE_ROUTER)
1068 driver_name = addr->router->name;
1069 driver_kind = US" router";
1070 disable_logging = addr->router->disable_logging;
1072 else driver_kind = US"routing";
1075 /* If there's an error message set, ensure that it contains only printing
1076 characters - it should, but occasionally things slip in and this at least
1077 stops the log format from getting wrecked. We also scan the message for an LDAP
1078 expansion item that has a password setting, and flatten the password. This is a
1079 fudge, but I don't know a cleaner way of doing this. (If the item is badly
1080 malformed, it won't ever have gone near LDAP.) */
1084 const uschar * s = string_printing(addr->message);
1086 /* deconst cast ok as string_printing known to have alloc'n'copied */
1087 addr->message = expand_hide_passwords(US s);
1090 /* If we used a transport that has one of the "return_output" options set, and
1091 if it did in fact generate some output, then for return_output we treat the
1092 message as failed if it was not already set that way, so that the output gets
1093 returned to the sender, provided there is a sender to send it to. For
1094 return_fail_output, do this only if the delivery failed. Otherwise we just
1095 unlink the file, and remove the name so that if the delivery failed, we don't
1096 try to send back an empty or unwanted file. The log_output options operate only
1097 on a non-empty file.
1099 In any case, we close the message file, because we cannot afford to leave a
1100 file-descriptor for one address while processing (maybe very many) others. */
1102 if (addr->return_file >= 0 && addr->return_filename)
1104 BOOL return_output = FALSE;
1105 struct stat statbuf;
1106 (void)EXIMfsync(addr->return_file);
1108 /* If there is no output, do nothing. */
1110 if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0)
1112 transport_instance *tb = addr->transport;
1114 /* Handle logging options */
1117 || result == FAIL && tb->log_fail_output
1118 || result == DEFER && tb->log_defer_output
1122 FILE *f = Ufopen(addr->return_filename, "rb");
1124 log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output "
1125 "from %s transport: %s", addr->return_filename, tb->name,
1128 if ((s = US Ufgets(big_buffer, big_buffer_size, f)))
1130 uschar *p = big_buffer + Ustrlen(big_buffer);
1132 while (p > big_buffer && isspace(p[-1])) p--;
1134 sp = string_printing(big_buffer);
1135 log_write(0, LOG_MAIN, "<%s>: %s transport output: %s",
1136 addr->address, tb->name, sp);
1141 /* Handle returning options, but only if there is an address to return
1144 if (sender_address[0] != 0 || addr->prop.errors_address)
1145 if (tb->return_output)
1147 addr->transport_return = result = FAIL;
1148 if (addr->basic_errno == 0 && !addr->message)
1149 addr->message = US"return message generated";
1150 return_output = TRUE;
1153 if (tb->return_fail_output && result == FAIL) return_output = TRUE;
1156 /* Get rid of the file unless it might be returned, but close it in
1161 Uunlink(addr->return_filename);
1162 addr->return_filename = NULL;
1163 addr->return_file = -1;
1166 (void)close(addr->return_file);
1169 /* The success case happens only after delivery by a transport. */
1173 addr->next = addr_succeed;
1174 addr_succeed = addr;
1176 /* Call address_done() to ensure that we don't deliver to this address again,
1177 and write appropriate things to the message log. If it is a child address, we
1178 call child_done() to scan the ancestors and mark them complete if this is the
1179 last child to complete. */
1181 address_done(addr, now);
1182 DEBUG(D_deliver) debug_printf("%s delivered\n", addr->address);
1185 deliver_msglog("%s %s: %s%s succeeded\n", now, addr->address,
1186 driver_name, driver_kind);
1189 deliver_msglog("%s %s <%s>: %s%s succeeded\n", now, addr->address,
1190 addr->parent->address, driver_name, driver_kind);
1191 child_done(addr, now);
1194 /* Certificates for logging (via events) */
1196 tls_out.ourcert = addr->ourcert;
1197 addr->ourcert = NULL;
1198 tls_out.peercert = addr->peercert;
1199 addr->peercert = NULL;
1201 tls_out.cipher = addr->cipher;
1202 tls_out.peerdn = addr->peerdn;
1203 tls_out.ocsp = addr->ocsp;
1204 # ifdef EXPERIMENTAL_DANE
1205 tls_out.dane_verified = testflag(addr, af_dane_verified);
1209 delivery_log(LOG_MAIN, addr, logchar, NULL);
1212 tls_free_cert(&tls_out.ourcert);
1213 tls_free_cert(&tls_out.peercert);
1214 tls_out.cipher = NULL;
1215 tls_out.peerdn = NULL;
1216 tls_out.ocsp = OCSP_NOT_REQ;
1217 # ifdef EXPERIMENTAL_DANE
1218 tls_out.dane_verified = FALSE;
1224 /* Soft failure, or local delivery process failed; freezing may be
1227 else if (result == DEFER || result == PANIC)
1229 if (result == PANIC) logflags |= LOG_PANIC;
1231 /* This puts them on the chain in reverse order. Do not change this, because
1232 the code for handling retries assumes that the one with the retry
1233 information is last. */
1235 addr->next = addr_defer;
1238 /* The only currently implemented special action is to freeze the
1239 message. Logging of this is done later, just before the -H file is
1242 if (addr->special_action == SPECIAL_FREEZE)
1244 deliver_freeze = TRUE;
1245 deliver_frozen_at = time(NULL);
1246 update_spool = TRUE;
1249 /* If doing a 2-stage queue run, we skip writing to either the message
1250 log or the main log for SMTP defers. */
1252 if (!queue_2stage || addr->basic_errno != 0)
1256 /* For errors of the type "retry time not reached" (also remotes skipped
1257 on queue run), logging is controlled by L_retry_defer. Note that this kind
1258 of error number is negative, and all the retry ones are less than any
1261 unsigned int use_log_selector = addr->basic_errno <= ERRNO_RETRY_BASE
1262 ? L_retry_defer : 0;
1264 /* Build up the line that is used for both the message log and the main
1267 s = reset_point = store_get(size);
1269 /* Create the address string for logging. Must not do this earlier, because
1270 an OK result may be changed to FAIL when a pipe returns text. */
1272 log_address = string_log_address(addr, LOGGING(all_parents), result == OK);
1274 s = string_cat(s, &size, &ptr, log_address);
1276 /* Either driver_name contains something and driver_kind contains
1277 " router" or " transport" (note the leading space), or driver_name is
1278 a null string and driver_kind contains "routing" without the leading
1279 space, if all routing has been deferred. When a domain has been held,
1280 so nothing has been done at all, both variables contain null strings. */
1284 if (driver_kind[1] == 't' && addr->router)
1285 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
1287 ss[1] = toupper(driver_kind[1]);
1288 s = string_append(s, &size, &ptr, 2, ss, driver_name);
1290 else if (driver_kind)
1291 s = string_append(s, &size, &ptr, 2, US" ", driver_kind);
1293 sprintf(CS ss, " defer (%d)", addr->basic_errno);
1294 s = string_cat(s, &size, &ptr, ss);
1296 if (addr->basic_errno > 0)
1297 s = string_append(s, &size, &ptr, 2, US": ",
1298 US strerror(addr->basic_errno));
1300 if (addr->host_used)
1302 s = string_append(s, &size, &ptr, 5,
1303 US" H=", addr->host_used->name,
1304 US" [", addr->host_used->address, US"]");
1305 if (LOGGING(outgoing_port))
1307 int port = addr->host_used->port;
1308 s = string_append(s, &size, &ptr, 2,
1309 US":", port == PORT_NONE ? US"25" : string_sprintf("%d", port));
1314 s = string_append(s, &size, &ptr, 2, US": ", addr->message);
1318 /* Log the deferment in the message log, but don't clutter it
1319 up with retry-time defers after the first delivery attempt. */
1321 if (deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE)
1322 deliver_msglog("%s %s\n", now, s);
1324 /* Write the main log and reset the store */
1326 log_write(use_log_selector, logflags, "== %s", s);
1327 store_reset(reset_point);
1332 /* Hard failure. If there is an address to which an error message can be sent,
1333 put this address on the failed list. If not, put it on the deferred list and
1334 freeze the mail message for human attention. The latter action can also be
1335 explicitly requested by a router or transport. */
1339 /* If this is a delivery error, or a message for which no replies are
1340 wanted, and the message's age is greater than ignore_bounce_errors_after,
1341 force the af_ignore_error flag. This will cause the address to be discarded
1342 later (with a log entry). */
1344 if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after)
1345 setflag(addr, af_ignore_error);
1347 /* Freeze the message if requested, or if this is a bounce message (or other
1348 message with null sender) and this address does not have its own errors
1349 address. However, don't freeze if errors are being ignored. The actual code
1350 to ignore occurs later, instead of sending a message. Logging of freezing
1351 occurs later, just before writing the -H file. */
1353 if ( !testflag(addr, af_ignore_error)
1354 && ( addr->special_action == SPECIAL_FREEZE
1355 || (sender_address[0] == 0 && !addr->prop.errors_address)
1358 frozen_info = addr->special_action == SPECIAL_FREEZE
1360 : sender_local && !local_error_message
1361 ? US" (message created with -f <>)"
1362 : US" (delivery error message)";
1363 deliver_freeze = TRUE;
1364 deliver_frozen_at = time(NULL);
1365 update_spool = TRUE;
1367 /* The address is put on the defer rather than the failed queue, because
1368 the message is being retained. */
1370 addr->next = addr_defer;
1374 /* Don't put the address on the nonrecipients tree yet; wait until an
1375 error message has been successfully sent. */
1379 addr->next = addr_failed;
1383 /* Build up the log line for the message and main logs */
1385 s = reset_point = store_get(size);
1387 /* Create the address string for logging. Must not do this earlier, because
1388 an OK result may be changed to FAIL when a pipe returns text. */
1390 log_address = string_log_address(addr, LOGGING(all_parents), result == OK);
1392 s = string_cat(s, &size, &ptr, log_address);
1394 if (LOGGING(sender_on_delivery))
1395 s = string_append(s, &size, &ptr, 3, US" F=<", sender_address, US">");
1397 /* Return path may not be set if no delivery actually happened */
1399 if (used_return_path && LOGGING(return_path_on_delivery))
1400 s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
1403 s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
1404 if (addr->transport)
1405 s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
1407 if (addr->host_used)
1408 s = d_hostlog(s, &size, &ptr, addr);
1411 s = d_tlslog(s, &size, &ptr, addr);
1414 if (addr->basic_errno > 0)
1415 s = string_append(s, &size, &ptr, 2, US": ",
1416 US strerror(addr->basic_errno));
1419 s = string_append(s, &size, &ptr, 2, US": ", addr->message);
1423 /* Do the logging. For the message log, "routing failed" for those cases,
1424 just to make it clearer. */
1427 deliver_msglog("%s %s\n", now, s);
1429 deliver_msglog("%s %s failed for %s\n", now, driver_kind, s);
1431 log_write(0, LOG_MAIN, "** %s", s);
1433 #ifndef DISABLE_EVENT
1434 msg_event_raise(US"msg:fail:delivery", addr);
1437 store_reset(reset_point);
1440 /* Ensure logging is turned on again in all cases */
1442 disable_logging = FALSE;
1448 /*************************************************
1449 * Address-independent error *
1450 *************************************************/
1452 /* This function is called when there's an error that is not dependent on a
1453 particular address, such as an expansion string failure. It puts the error into
1454 all the addresses in a batch, logs the incident on the main and panic logs, and
1455 clears the expansions. It is mostly called from local_deliver(), but can be
1456 called for a remote delivery via findugid().
1459 logit TRUE if (MAIN+PANIC) logging required
1460 addr the first of the chain of addresses
1462 format format string for error message, or NULL if already set in addr
1463 ... arguments for the format
1469 common_error(BOOL logit, address_item *addr, int code, uschar *format, ...)
1471 address_item *addr2;
1472 addr->basic_errno = code;
1478 va_start(ap, format);
1479 if (!string_vformat(buffer, sizeof(buffer), CS format, ap))
1480 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1481 "common_error expansion was longer than " SIZE_T_FMT, sizeof(buffer));
1483 addr->message = string_copy(buffer);
1486 for (addr2 = addr->next; addr2; addr2 = addr2->next)
1488 addr2->basic_errno = code;
1489 addr2->message = addr->message;
1492 if (logit) log_write(0, LOG_MAIN|LOG_PANIC, "%s", addr->message);
1493 deliver_set_expansions(NULL);
1499 /*************************************************
1500 * Check a "never users" list *
1501 *************************************************/
1503 /* This function is called to check whether a uid is on one of the two "never
1507 uid the uid to be checked
1508 nusers the list to be scanned; the first item in the list is the count
1510 Returns: TRUE if the uid is on the list
1514 check_never_users(uid_t uid, uid_t *nusers)
1517 if (!nusers) return FALSE;
1518 for (i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE;
1524 /*************************************************
1525 * Find uid and gid for a transport *
1526 *************************************************/
1528 /* This function is called for both local and remote deliveries, to find the
1529 uid/gid under which to run the delivery. The values are taken preferentially
1530 from the transport (either explicit or deliver_as_creator), then from the
1531 address (i.e. the router), and if nothing is set, the exim uid/gid are used. If
1532 the resulting uid is on the "never_users" or the "fixed_never_users" list, a
1533 panic error is logged, and the function fails (which normally leads to delivery
1537 addr the address (possibly a chain)
1539 uidp pointer to uid field
1540 gidp pointer to gid field
1541 igfp pointer to the use_initgroups field
1543 Returns: FALSE if failed - error has been set in address(es)
1547 findugid(address_item *addr, transport_instance *tp, uid_t *uidp, gid_t *gidp,
1551 BOOL gid_set = FALSE;
1553 /* Default initgroups flag comes from the transport */
1555 *igfp = tp->initgroups;
1557 /* First see if there's a gid on the transport, either fixed or expandable.
1558 The expanding function always logs failure itself. */
1565 else if (tp->expand_gid)
1567 if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp,
1570 common_error(FALSE, addr, ERRNO_GIDFAIL, NULL);
1576 /* If the transport did not set a group, see if the router did. */
1578 if (!gid_set && testflag(addr, af_gid_set))
1584 /* Pick up a uid from the transport if one is set. */
1586 if (tp->uid_set) *uidp = tp->uid;
1588 /* Otherwise, try for an expandable uid field. If it ends up as a numeric id,
1589 it does not provide a passwd value from which a gid can be taken. */
1591 else if (tp->expand_uid)
1594 if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw,
1595 uidp, &(addr->message)))
1597 common_error(FALSE, addr, ERRNO_UIDFAIL, NULL);
1607 /* If the transport doesn't set the uid, test the deliver_as_creator flag. */
1609 else if (tp->deliver_as_creator)
1611 *uidp = originator_uid;
1614 *gidp = originator_gid;
1619 /* Otherwise see if the address specifies the uid and if so, take it and its
1622 else if (testflag(addr, af_uid_set))
1625 *igfp = testflag(addr, af_initgroups);
1628 /* Nothing has specified the uid - default to the Exim user, and group if the
1641 /* If no gid is set, it is a disaster. We default to the Exim gid only if
1642 defaulting to the Exim uid. In other words, if the configuration has specified
1643 a uid, it must also provide a gid. */
1647 common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for "
1648 "%s transport", tp->name);
1652 /* Check that the uid is not on the lists of banned uids that may not be used
1653 for delivery processes. */
1655 nuname = check_never_users(*uidp, never_users)
1657 : check_never_users(*uidp, fixed_never_users)
1658 ? US"fixed_never_users"
1662 common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport "
1663 "is on the %s list", (long int)(*uidp), tp->name, nuname);
1675 /*************************************************
1676 * Check the size of a message for a transport *
1677 *************************************************/
1679 /* Checks that the message isn't too big for the selected transport.
1680 This is called only when it is known that the limit is set.
1684 addr the (first) address being delivered
1687 DEFER expansion failed or did not yield an integer
1688 FAIL message too big
1692 check_message_size(transport_instance *tp, address_item *addr)
1697 deliver_set_expansions(addr);
1698 size_limit = expand_string_integer(tp->message_size_limit, TRUE);
1699 deliver_set_expansions(NULL);
1701 if (expand_string_message)
1704 addr->message = size_limit == -1
1705 ? string_sprintf("failed to expand message_size_limit "
1706 "in %s transport: %s", tp->name, expand_string_message)
1707 : string_sprintf("invalid message_size_limit "
1708 "in %s transport: %s", tp->name, expand_string_message);
1710 else if (size_limit > 0 && message_size > size_limit)
1714 string_sprintf("message is too big (transport limit = %d)",
1723 /*************************************************
1724 * Transport-time check for a previous delivery *
1725 *************************************************/
1727 /* Check that this base address hasn't previously been delivered to its routed
1728 transport. If it has been delivered, mark it done. The check is necessary at
1729 delivery time in order to handle homonymic addresses correctly in cases where
1730 the pattern of redirection changes between delivery attempts (so the unique
1731 fields change). Non-homonymic previous delivery is detected earlier, at routing
1732 time (which saves unnecessary routing).
1735 addr the address item
1736 testing TRUE if testing wanted only, without side effects
1738 Returns: TRUE if previously delivered by the transport
1742 previously_transported(address_item *addr, BOOL testing)
1744 (void)string_format(big_buffer, big_buffer_size, "%s/%s",
1745 addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name);
1747 if (tree_search(tree_nonrecipients, big_buffer) != 0)
1749 DEBUG(D_deliver|D_route|D_transport)
1750 debug_printf("%s was previously delivered (%s transport): discarded\n",
1751 addr->address, addr->transport->name);
1752 if (!testing) child_done(addr, tod_stamp(tod_log));
1761 /******************************************************
1762 * Check for a given header in a header string *
1763 ******************************************************/
1765 /* This function is used when generating quota warnings. The configuration may
1766 specify any header lines it likes in quota_warn_message. If certain of them are
1767 missing, defaults are inserted, so we need to be able to test for the presence
1771 hdr the required header name
1772 hstring the header string
1774 Returns: TRUE the header is in the string
1775 FALSE the header is not in the string
1779 contains_header(uschar *hdr, uschar *hstring)
1781 int len = Ustrlen(hdr);
1782 uschar *p = hstring;
1785 if (strncmpic(p, hdr, len) == 0)
1788 while (*p == ' ' || *p == '\t') p++;
1789 if (*p == ':') return TRUE;
1791 while (*p != 0 && *p != '\n') p++;
1792 if (*p == '\n') p++;
1800 /*************************************************
1801 * Perform a local delivery *
1802 *************************************************/
1804 /* Each local delivery is performed in a separate process which sets its
1805 uid and gid as specified. This is a safer way than simply changing and
1806 restoring using seteuid(); there is a body of opinion that seteuid() cannot be
1807 used safely. From release 4, Exim no longer makes any use of it. Besides, not
1808 all systems have seteuid().
1810 If the uid/gid are specified in the transport_instance, they are used; the
1811 transport initialization must ensure that either both or neither are set.
1812 Otherwise, the values associated with the address are used. If neither are set,
1813 it is a configuration error.
1815 The transport or the address may specify a home directory (transport over-
1816 rides), and if they do, this is set as $home. If neither have set a working
1817 directory, this value is used for that as well. Otherwise $home is left unset
1818 and the cwd is set to "/" - a directory that should be accessible to all users.
1820 Using a separate process makes it more complicated to get error information
1821 back. We use a pipe to pass the return code and also an error code and error
1822 text string back to the parent process.
1825 addr points to an address block for this delivery; for "normal" local
1826 deliveries this is the only address to be delivered, but for
1827 pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe)
1828 a number of addresses can be handled simultaneously, and in this
1829 case addr will point to a chain of addresses with the same
1832 shadowing TRUE if running a shadow transport; this causes output from pipes
1839 deliver_local(address_item *addr, BOOL shadowing)
1841 BOOL use_initgroups;
1844 int status, len, rc;
1847 uschar *working_directory;
1848 address_item *addr2;
1849 transport_instance *tp = addr->transport;
1851 /* Set up the return path from the errors or sender address. If the transport
1852 has its own return path setting, expand it and replace the existing value. */
1854 if(addr->prop.errors_address)
1855 return_path = addr->prop.errors_address;
1856 #ifdef EXPERIMENTAL_SRS
1857 else if (addr->prop.srs_sender)
1858 return_path = addr->prop.srs_sender;
1861 return_path = sender_address;
1863 if (tp->return_path)
1865 uschar *new_return_path = expand_string(tp->return_path);
1866 if (!new_return_path)
1868 if (!expand_string_forcedfail)
1870 common_error(TRUE, addr, ERRNO_EXPANDFAIL,
1871 US"Failed to expand return path \"%s\" in %s transport: %s",
1872 tp->return_path, tp->name, expand_string_message);
1876 else return_path = new_return_path;
1879 /* For local deliveries, one at a time, the value used for logging can just be
1880 set directly, once and for all. */
1882 used_return_path = return_path;
1884 /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message
1885 gets put into the address(es), and the expansions are unset, so we can just
1888 if (!findugid(addr, tp, &uid, &gid, &use_initgroups)) return;
1890 /* See if either the transport or the address specifies a home directory. A
1891 home directory set in the address may already be expanded; a flag is set to
1892 indicate that. In other cases we must expand it. */
1894 if ( (deliver_home = tp->home_dir) /* Set in transport, or */
1895 || ( (deliver_home = addr->home_dir) /* Set in address and */
1896 && !testflag(addr, af_home_expanded) /* not expanded */
1899 uschar *rawhome = deliver_home;
1900 deliver_home = NULL; /* in case it contains $home */
1901 if (!(deliver_home = expand_string(rawhome)))
1903 common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed "
1904 "to expand for %s transport: %s", rawhome, tp->name,
1905 expand_string_message);
1908 if (*deliver_home != '/')
1910 common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" "
1911 "is not absolute for %s transport", deliver_home, tp->name);
1916 /* See if either the transport or the address specifies a current directory,
1917 and if so, expand it. If nothing is set, use the home directory, unless it is
1918 also unset in which case use "/", which is assumed to be a directory to which
1919 all users have access. It is necessary to be in a visible directory for some
1920 operating systems when running pipes, as some commands (e.g. "rm" under Solaris
1921 2.5) require this. */
1923 working_directory = tp->current_dir ? tp->current_dir : addr->current_dir;
1924 if (working_directory)
1926 uschar *raw = working_directory;
1927 if (!(working_directory = expand_string(raw)))
1929 common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" "
1930 "failed to expand for %s transport: %s", raw, tp->name,
1931 expand_string_message);
1934 if (*working_directory != '/')
1936 common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path "
1937 "\"%s\" is not absolute for %s transport", working_directory, tp->name);
1941 else working_directory = deliver_home ? deliver_home : US"/";
1943 /* If one of the return_output flags is set on the transport, create and open a
1944 file in the message log directory for the transport to write its output onto.
1945 This is mainly used by pipe transports. The file needs to be unique to the
1946 address. This feature is not available for shadow transports. */
1949 && ( tp->return_output || tp->return_fail_output
1950 || tp->log_output || tp->log_fail_output || tp->log_defer_output
1954 addr->return_filename =
1955 string_sprintf("%s/msglog/%s/%s-%d-%d", spool_directory, message_subdir,
1956 message_id, getpid(), return_count++);
1957 addr->return_file = open_msglog_file(addr->return_filename, 0400, &error);
1958 if (addr->return_file < 0)
1960 common_error(TRUE, addr, errno, US"Unable to %s file for %s transport "
1961 "to return message: %s", error, tp->name, strerror(errno));
1966 /* Create the pipe for inter-process communication. */
1970 common_error(TRUE, addr, ERRNO_PIPEFAIL, US"Creation of pipe failed: %s",
1975 /* Now fork the process to do the real work in the subprocess, but first
1976 ensure that all cached resources are freed so that the subprocess starts with
1977 a clean slate and doesn't interfere with the parent process. */
1981 if ((pid = fork()) == 0)
1983 BOOL replicate = TRUE;
1985 /* Prevent core dumps, as we don't want them in users' home directories.
1986 HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that
1987 system. Some experimental/developing systems (e.g. GNU/Hurd) may define
1988 RLIMIT_CORE but not support it in setrlimit(). For such systems, do not
1989 complain if the error is "not supported".
1991 There are two scenarios where changing the max limit has an effect. In one,
1992 the user is using a .forward and invoking a command of their choice via pipe;
1993 for these, we do need the max limit to be 0 unless the admin chooses to
1994 permit an increased limit. In the other, the command is invoked directly by
1995 the transport and is under administrator control, thus being able to raise
1996 the limit aids in debugging. So there's no general always-right answer.
1998 Thus we inhibit core-dumps completely but let individual transports, while
1999 still root, re-raise the limits back up to aid debugging. We make the
2000 default be no core-dumps -- few enough people can use core dumps in
2001 diagnosis that it's reasonable to make them something that has to be explicitly requested.
2008 if (setrlimit(RLIMIT_CORE, &rl) < 0)
2010 # ifdef SETRLIMIT_NOT_SUPPORTED
2011 if (errno != ENOSYS && errno != ENOTSUP)
2013 log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_CORE) failed: %s",
2018 /* Reset the random number generator, so different processes don't all
2019 have the same sequence. */
2023 /* If the transport has a setup entry, call this first, while still
2024 privileged. (Appendfile uses this to expand quota, for example, while
2025 able to read private files.) */
2027 if (addr->transport->setup)
2028 switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid,
2032 addr->transport_return = DEFER;
2036 addr->transport_return = PANIC;
2040 /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as
2041 when the process becomes unprivileged, it won't be able to write to the
2042 process log. SIGHUP is ignored throughout exim, except when it is being
2045 signal(SIGINT, SIG_IGN);
2046 signal(SIGTERM, SIG_IGN);
2047 signal(SIGUSR1, SIG_IGN);
2049 /* Close the unwanted half of the pipe, and set close-on-exec for the other
2050 half - for transports that exec things (e.g. pipe). Then set the required
2053 (void)close(pfd[pipe_read]);
2054 (void)fcntl(pfd[pipe_write], F_SETFD, fcntl(pfd[pipe_write], F_GETFD) |
2056 exim_setugid(uid, gid, use_initgroups,
2057 string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part,
2058 addr->address, addr->transport->name));
2062 address_item *batched;
2063 debug_printf(" home=%s current=%s\n", deliver_home, working_directory);
2064 for (batched = addr->next; batched; batched = batched->next)
2065 debug_printf("additional batched address: %s\n", batched->address);
2068 /* Set an appropriate working directory. */
2070 if (Uchdir(working_directory) < 0)
2072 addr->transport_return = DEFER;
2073 addr->basic_errno = errno;
2074 addr->message = string_sprintf("failed to chdir to %s", working_directory);
2077 /* If successful, call the transport */
2082 set_process_info("delivering %s to %s using %s", message_id,
2083 addr->local_part, addr->transport->name);
2085 /* Setting this global in the subprocess means we need never clear it */
2086 transport_name = addr->transport->name;
2088 /* If a transport filter has been specified, set up its argument list.
2089 Any errors will get put into the address, and FALSE yielded. */
2091 if (addr->transport->filter_command)
2093 ok = transport_set_up_command(&transport_filter_argv,
2094 addr->transport->filter_command,
2095 TRUE, PANIC, addr, US"transport filter", NULL);
2096 transport_filter_timeout = addr->transport->filter_timeout;
2098 else transport_filter_argv = NULL;
2102 debug_print_string(addr->transport->debug_string);
2103 replicate = !(addr->transport->info->code)(addr->transport, addr);
2107 /* Pass the results back down the pipe. If necessary, first replicate the
2108 status in the top address to the others in the batch. The label is the
2109 subject of a goto when a call to the transport's setup function fails. We
2110 pass the pointer to the transport back in case it got changed as a result of
2111 file_format in appendfile. */
2115 if (replicate) replicate_status(addr);
2116 for (addr2 = addr; addr2; addr2 = addr2->next)
2119 int local_part_length = Ustrlen(addr2->local_part);
2123 if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int)
2124 || (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count)
2125 || (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags)
2126 || (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int)
2127 || (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int)
2128 || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int)
2129 || (ret = write(pfd[pipe_write], &addr2->transport,
2130 sizeof(transport_instance *))) != sizeof(transport_instance *)
2132 /* For a file delivery, pass back the local part, in case the original
2133 was only part of the final delivery path. This gives more complete
2136 || (testflag(addr2, af_file)
2137 && ( (ret = write(pfd[pipe_write], &local_part_length, sizeof(int))) != sizeof(int)
2138 || (ret = write(pfd[pipe_write], addr2->local_part, local_part_length)) != local_part_length
2142 log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n",
2143 ret == -1 ? strerror(errno) : "short write");
2145 /* Now any messages */
2147 for (i = 0, s = addr2->message; i < 2; i++, s = addr2->user_message)
2149 int message_length = s ? Ustrlen(s) + 1 : 0;
2150 if( (ret = write(pfd[pipe_write], &message_length, sizeof(int))) != sizeof(int)
2151 || message_length > 0 && (ret = write(pfd[pipe_write], s, message_length)) != message_length
2153 log_write(0, LOG_MAIN|LOG_PANIC, "Failed writing transport results to pipe: %s\n",
2154 ret == -1 ? strerror(errno) : "short write");
2158 /* OK, this process is now done. Free any cached resources that it opened,
2159 and close the pipe we were writing down before exiting. */
2161 (void)close(pfd[pipe_write]);
2166 /* Back in the main process: panic if the fork did not succeed. This seems
2167 better than returning an error - if forking is failing it is probably best
2168 not to try other deliveries for this message. */
2171 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Fork failed for local delivery to %s",
2174 /* Read the pipe to get the delivery status codes and error messages. Our copy
2175 of the writing end must be closed first, as otherwise read() won't return zero
2176 on an empty pipe. We check that a status exists for each address before
2177 overwriting the address structure. If data is missing, the default DEFER status
2178 will remain. Afterwards, close the reading end. */
2180 (void)close(pfd[pipe_write]);
2182 for (addr2 = addr; addr2; addr2 = addr2->next)
2184 len = read(pfd[pipe_read], &status, sizeof(int));
2190 addr2->transport_return = status;
2191 len = read(pfd[pipe_read], &transport_count,
2192 sizeof(transport_count));
2193 len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags));
2194 len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int));
2195 len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int));
2196 len = read(pfd[pipe_read], &addr2->special_action, sizeof(int));
2197 len = read(pfd[pipe_read], &addr2->transport,
2198 sizeof(transport_instance *));
2200 if (testflag(addr2, af_file))
2202 int local_part_length;
2203 len = read(pfd[pipe_read], &local_part_length, sizeof(int));
2204 len = read(pfd[pipe_read], big_buffer, local_part_length);
2205 big_buffer[local_part_length] = 0;
2206 addr2->local_part = string_copy(big_buffer);
2209 for (i = 0, sptr = &addr2->message; i < 2; i++, sptr = &addr2->user_message)
2212 len = read(pfd[pipe_read], &message_length, sizeof(int));
2213 if (message_length > 0)
2215 len = read(pfd[pipe_read], big_buffer, message_length);
2216 big_buffer[big_buffer_size-1] = '\0'; /* guard byte */
2217 if (len > 0) *sptr = string_copy(big_buffer);
2224 log_write(0, LOG_MAIN|LOG_PANIC, "failed to read delivery status for %s "
2225 "from delivery subprocess", addr2->unique);
2230 (void)close(pfd[pipe_read]);
2232 /* Unless shadowing, write all successful addresses immediately to the journal
2233 file, to ensure they are recorded asap. For homonymic addresses, use the base
2234 address plus the transport name. Failure to write the journal is panic-worthy,
2235 but don't stop, as it may prove possible subsequently to update the spool file
2236 in order to record the delivery. */
2240 for (addr2 = addr; addr2; addr2 = addr2->next)
2241 if (addr2->transport_return == OK)
2243 if (testflag(addr2, af_homonym))
2244 sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name);
2246 sprintf(CS big_buffer, "%.500s\n", addr2->unique);
2248 /* In the test harness, wait just a bit to let the subprocess finish off
2249 any debug output etc first. */
2251 if (running_in_test_harness) millisleep(300);
2253 DEBUG(D_deliver) debug_printf("journalling %s", big_buffer);
2254 len = Ustrlen(big_buffer);
2255 if (write(journal_fd, big_buffer, len) != len)
2256 log_write(0, LOG_MAIN|LOG_PANIC, "failed to update journal for %s: %s",
2257 big_buffer, strerror(errno));
2260 /* Ensure the journal file is pushed out to disk. */
2262 if (EXIMfsync(journal_fd) < 0)
2263 log_write(0, LOG_MAIN|LOG_PANIC, "failed to fsync journal: %s",
2267 /* Wait for the process to finish. If it terminates with a non-zero code,
2268 freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the
2269 status values of all the addresses as they are. Take care to handle the case
2270 when the subprocess doesn't seem to exist. This has been seen on one system
2271 when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that
2272 happens, wait() doesn't recognize the termination of child processes. Exim now
2273 resets SIGCHLD to SIG_DFL, but this code should still be robust. */
2275 while ((rc = wait(&status)) != pid)
2276 if (rc < 0 && errno == ECHILD) /* Process has vanished */
2278 log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly",
2279 addr->transport->driver_name);
2284 if ((status & 0xffff) != 0)
2286 int msb = (status >> 8) & 255;
2287 int lsb = status & 255;
2288 int code = (msb == 0)? (lsb & 0x7f) : msb;
2289 if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT))
2290 addr->special_action = SPECIAL_FREEZE;
2291 log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero "
2292 "status 0x%04x: %s %d",
2293 addr->transport->driver_name,
2295 msb == 0 ? "terminated by signal" : "exit code",
2299 /* If SPECIAL_WARN is set in the top address, send a warning message. */
2301 if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message)
2304 uschar *warn_message;
2307 DEBUG(D_deliver) debug_printf("Warning message requested by transport\n");
2309 if (!(warn_message = expand_string(addr->transport->warn_message)))
2310 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning "
2311 "message for %s transport): %s", addr->transport->warn_message,
2312 addr->transport->name, expand_string_message);
2314 else if ((pid = child_open_exim(&fd)) > 0)
2316 FILE *f = fdopen(fd, "wb");
2317 if (errors_reply_to && !contains_header(US"Reply-To", warn_message))
2318 fprintf(f, "Reply-To: %s\n", errors_reply_to);
2319 fprintf(f, "Auto-Submitted: auto-replied\n");
2320 if (!contains_header(US"From", warn_message))
2322 fprintf(f, "%s", CS warn_message);
2324 /* Close and wait for child process to complete, without a timeout. */
2327 (void)child_close(pid, 0);
2330 addr->special_action = SPECIAL_NONE;
2337 /* Check transport for the given concurrency limit. Return TRUE if over
2338 the limit (or an expansion failure), else FALSE and if there was a limit,
2339 the key for the hints database used for the concurrency count. */
2342 tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key)
2344 unsigned max_parallel;
2346 if (!tp->max_parallel) return FALSE;
2348 max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE);
2349 if (expand_string_message)
2351 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option "
2352 "in %s transport (%s): %s", tp->name, addr->address,
2353 expand_string_message);
2357 if (max_parallel > 0)
2359 uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name);
2360 if (!enq_start(serialize_key, max_parallel))
2362 address_item * next;
2364 debug_printf("skipping tpt %s because concurrency limit %u reached\n",
2365 tp->name, max_parallel);
2369 addr->message = US"concurrency limit reached for transport";
2370 addr->basic_errno = ERRNO_TRETRY;
2371 post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0);
2372 } while ((addr = next));
2375 *key = serialize_key;
2382 /*************************************************
2383 * Do local deliveries *
2384 *************************************************/
2386 /* This function processes the list of addresses in addr_local. True local
2387 deliveries are always done one address at a time. However, local deliveries can
2388 be batched up in some cases. Typically this is when writing batched SMTP output
2389 files for use by some external transport mechanism, or when running local
2390 deliveries over LMTP.
2397 do_local_deliveries(void)
2400 open_db *dbm_file = NULL;
2401 time_t now = time(NULL);
2403 /* Loop until we have exhausted the supply of local deliveries */
2407 time_t delivery_start;
2409 address_item *addr2, *addr3, *nextaddr;
2410 int logflags = LOG_MAIN;
2411 int logchar = dont_deliver? '*' : '=';
2412 transport_instance *tp;
2413 uschar * serialize_key = NULL;
2415 /* Pick the first undelivered address off the chain */
2417 address_item *addr = addr_local;
2418 addr_local = addr->next;
2421 DEBUG(D_deliver|D_transport)
2422 debug_printf("--------> %s <--------\n", addr->address);
2424 /* An internal disaster if there is no transport. Should not occur! */
2426 if (!(tp = addr->transport))
2428 logflags |= LOG_PANIC;
2429 disable_logging = FALSE; /* Jic */
2430 addr->message = addr->router
2431 ? string_sprintf("No transport set by %s router", addr->router->name)
2432 : string_sprintf("No transport set by system filter");
2433 post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0);
2437 /* Check that this base address hasn't previously been delivered to this
2438 transport. The check is necessary at this point to handle homonymic addresses
2439 correctly in cases where the pattern of redirection changes between delivery
2440 attempts. Non-homonymic previous delivery is detected earlier, at routing
2443 if (previously_transported(addr, FALSE)) continue;
2445 /* There are weird cases where logging is disabled */
2447 disable_logging = tp->disable_logging;
2449 /* Check for batched addresses and possible amalgamation. Skip all the work
2450 if either batch_max <= 1 or there aren't any other addresses for local
2453 if (tp->batch_max > 1 && addr_local)
2455 int batch_count = 1;
2456 BOOL uses_dom = readconf_depends((driver_instance *)tp, US"domain");
2457 BOOL uses_lp = ( testflag(addr, af_pfr)
2458 && (testflag(addr, af_file) || addr->local_part[0] == '|')
2460 || readconf_depends((driver_instance *)tp, US"local_part");
2461 uschar *batch_id = NULL;
2462 address_item **anchor = &addr_local;
2463 address_item *last = addr;
2466 /* Expand the batch_id string for comparison with other addresses.
2467 Expansion failure suppresses batching. */
2471 deliver_set_expansions(addr);
2472 batch_id = expand_string(tp->batch_id);
2473 deliver_set_expansions(NULL);
2476 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
2477 "in %s transport (%s): %s", tp->name, addr->address,
2478 expand_string_message);
2479 batch_count = tp->batch_max;
2483 /* Until we reach the batch_max limit, pick off addresses which have the
2484 same characteristics. These are:
2487 not previously delivered (see comment about 50 lines above)
2488 same local part if the transport's configuration contains $local_part
2489 or if this is a file or pipe delivery from a redirection
2490 same domain if the transport's configuration contains $domain
2492 same additional headers
2493 same headers to be removed
2494 same uid/gid for running the transport
2495 same first host if a host list is set
2498 while ((next = *anchor) && batch_count < tp->batch_max)
2501 tp == next->transport
2502 && !previously_transported(next, TRUE)
2503 && (addr->flags & (af_pfr|af_file)) == (next->flags & (af_pfr|af_file))
2504 && (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0)
2505 && (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0)
2506 && same_strings(next->prop.errors_address, addr->prop.errors_address)
2507 && same_headers(next->prop.extra_headers, addr->prop.extra_headers)
2508 && same_strings(next->prop.remove_headers, addr->prop.remove_headers)
2509 && same_ugid(tp, addr, next)
2510 && ( !addr->host_list && !next->host_list
2513 && Ustrcmp(addr->host_list->name, next->host_list->name) == 0
2516 /* If the transport has a batch_id setting, batch_id will be non-NULL
2517 from the expansion outside the loop. Expand for this address and compare.
2518 Expansion failure makes this address ineligible for batching. */
2523 address_item *save_nextnext = next->next;
2524 next->next = NULL; /* Expansion for a single address */
2525 deliver_set_expansions(next);
2526 next->next = save_nextnext;
2527 bid = expand_string(tp->batch_id);
2528 deliver_set_expansions(NULL);
2531 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
2532 "in %s transport (%s): %s", tp->name, next->address,
2533 expand_string_message);
2536 else ok = (Ustrcmp(batch_id, bid) == 0);
2539 /* Take address into batch if OK. */
2543 *anchor = next->next; /* Include the address */
2549 else anchor = &next->next; /* Skip the address */
2553 /* We now have one or more addresses that can be delivered in a batch. Check
2554 whether the transport is prepared to accept a message of this size. If not,
2555 fail them all forthwith. If the expansion fails, or does not yield an
2556 integer, defer delivery. */
2558 if (tp->message_size_limit)
2560 int rc = check_message_size(tp, addr);
2563 replicate_status(addr);
2567 post_process_one(addr, rc, logflags, DTYPE_TRANSPORT, 0);
2570 continue; /* With next batch of addresses */
2574 /* If we are not running the queue, or if forcing, all deliveries will be
2575 attempted. Otherwise, we must respect the retry times for each address. Even
2576 when not doing this, we need to set up the retry key string, and determine
2577 whether a retry record exists, because after a successful delivery, a delete
2578 retry item must be set up. Keep the retry database open only for the duration
2579 of these checks, rather than for all local deliveries, because some local
2580 deliveries (e.g. to pipes) can take a substantial time. */
2582 if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE)))
2584 DEBUG(D_deliver|D_retry|D_hints_lookup)
2585 debug_printf("no retry data available\n");
2592 BOOL ok = TRUE; /* to deliver this address */
2595 /* Set up the retry key to include the domain or not, and change its
2596 leading character from "R" to "T". Must make a copy before doing this,
2597 because the old key may be pointed to from a "delete" retry item after
2600 retry_key = string_copy(
2601 tp->retry_use_local_part ? addr2->address_retry_key :
2602 addr2->domain_retry_key);
2605 /* Inspect the retry data. If there is no hints file, delivery happens. */
2609 dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key);
2611 /* If there is no retry record, delivery happens. If there is,
2612 remember it exists so it can be deleted after a successful delivery. */
2616 setflag(addr2, af_lt_retry_exists);
2618 /* A retry record exists for this address. If queue running and not
2619 forcing, inspect its contents. If the record is too old, or if its
2620 retry time has come, or if it has passed its cutoff time, delivery
2625 debug_printf("retry record exists: age=%s ",
2626 readconf_printtime(now - retry_record->time_stamp));
2627 debug_printf("(max %s)\n", readconf_printtime(retry_data_expire));
2628 debug_printf(" time to retry = %s expired = %d\n",
2629 readconf_printtime(retry_record->next_try - now),
2630 retry_record->expired);
2633 if (queue_running && !deliver_force)
2635 ok = (now - retry_record->time_stamp > retry_data_expire)
2636 || (now >= retry_record->next_try)
2637 || retry_record->expired;
2639 /* If we haven't reached the retry time, there is one more check
2640 to do, which is for the ultimate address timeout. */
2643 ok = retry_ultimate_address_timeout(retry_key, addr2->domain,
2647 else DEBUG(D_retry) debug_printf("no retry record exists\n");
2650 /* This address is to be delivered. Leave it on the chain. */
2655 addr2 = addr2->next;
2658 /* This address is to be deferred. Take it out of the chain, and
2659 post-process it as complete. Must take it out of the chain first,
2660 because post processing puts it on another chain. */
2664 address_item *this = addr2;
2665 this->message = US"Retry time not yet reached";
2666 this->basic_errno = ERRNO_LRETRY;
2667 addr2 = addr3 ? (addr3->next = addr2->next)
2668 : (addr = addr2->next);
2669 post_process_one(this, DEFER, logflags, DTYPE_TRANSPORT, 0);
2673 if (dbm_file) dbfn_close(dbm_file);
2675 /* If there are no addresses left on the chain, they all deferred. Loop
2676 for the next set of addresses. */
2678 if (!addr) continue;
2680 /* If the transport is limited for parallellism, enforce that here.
2681 We use a hints DB entry, incremented here and decremented after
2682 the transport (and any shadow transport) completes. */
2684 if (tpt_parallel_check(tp, addr, &serialize_key))
2686 if (expand_string_message)
2688 logflags |= LOG_PANIC;
2692 post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0);
2693 } while ((addr = addr2));
2695 continue; /* Loop for the next set of addresses. */
2699 /* So, finally, we do have some addresses that can be passed to the
2700 transport. Before doing so, set up variables that are relevant to a
2703 deliver_set_expansions(addr);
2704 delivery_start = time(NULL);
2705 deliver_local(addr, FALSE);
2706 deliver_time = (int)(time(NULL) - delivery_start);
2708 /* If a shadow transport (which must perforce be another local transport), is
2709 defined, and its condition is met, we must pass the message to the shadow
2710 too, but only those addresses that succeeded. We do this by making a new
2711 chain of addresses - also to keep the original chain uncontaminated. We must
2712 use a chain rather than doing it one by one, because the shadow transport may
2715 NOTE: if the condition fails because of a lookup defer, there is nothing we
2719 && ( !tp->shadow_condition
2720 || expand_check_condition(tp->shadow_condition, tp->name, US"transport")
2723 transport_instance *stp;
2724 address_item *shadow_addr = NULL;
2725 address_item **last = &shadow_addr;
2727 for (stp = transports; stp; stp = stp->next)
2728 if (Ustrcmp(stp->name, tp->shadow) == 0) break;
2731 log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ",
2734 /* Pick off the addresses that have succeeded, and make clones. Put into
2735 the shadow_message field a pointer to the shadow_message field of the real
2738 else for (addr2 = addr; addr2; addr2 = addr2->next)
2739 if (addr2->transport_return == OK)
2741 addr3 = store_get(sizeof(address_item));
2744 addr3->shadow_message = (uschar *) &(addr2->shadow_message);
2745 addr3->transport = stp;
2746 addr3->transport_return = DEFER;
2747 addr3->return_filename = NULL;
2748 addr3->return_file = -1;
2750 last = &(addr3->next);
2753 /* If we found any addresses to shadow, run the delivery, and stick any
2754 message back into the shadow_message field in the original. */
2758 int save_count = transport_count;
2760 DEBUG(D_deliver|D_transport)
2761 debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n");
2762 deliver_local(shadow_addr, TRUE);
2764 for(; shadow_addr; shadow_addr = shadow_addr->next)
2766 int sresult = shadow_addr->transport_return;
2767 *(uschar **)shadow_addr->shadow_message =
2769 ? string_sprintf(" ST=%s", stp->name)
2770 : string_sprintf(" ST=%s (%s%s%s)", stp->name,
2771 shadow_addr->basic_errno <= 0
2773 : US strerror(shadow_addr->basic_errno),
2774 shadow_addr->basic_errno <= 0 || !shadow_addr->message
2777 shadow_addr->message
2778 ? shadow_addr->message
2779 : shadow_addr->basic_errno <= 0
2783 DEBUG(D_deliver|D_transport)
2784 debug_printf("%s shadow transport returned %s for %s\n",
2786 sresult == OK ? "OK" :
2787 sresult == DEFER ? "DEFER" :
2788 sresult == FAIL ? "FAIL" :
2789 sresult == PANIC ? "PANIC" : "?",
2790 shadow_addr->address);
2793 DEBUG(D_deliver|D_transport)
2794 debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n");
2796 transport_count = save_count; /* Restore original transport count */
2800 /* Cancel the expansions that were set up for the delivery. */
2802 deliver_set_expansions(NULL);
2804 /* If the transport was parallelism-limited, decrement the hints DB record. */
2806 if (serialize_key) enq_end(serialize_key);
2808 /* Now we can process the results of the real transport. We must take each
2809 address off the chain first, because post_process_one() puts it on another
2812 for (addr2 = addr; addr2; addr2 = nextaddr)
2814 int result = addr2->transport_return;
2815 nextaddr = addr2->next;
2817 DEBUG(D_deliver|D_transport)
2818 debug_printf("%s transport returned %s for %s\n",
2820 result == OK ? "OK" :
2821 result == DEFER ? "DEFER" :
2822 result == FAIL ? "FAIL" :
2823 result == PANIC ? "PANIC" : "?",
2826 /* If there is a retry_record, or if delivery is deferred, build a retry
2827 item for setting a new retry time or deleting the old retry record from
2828 the database. These items are handled all together after all addresses
2829 have been handled (so the database is open just for a short time for
2832 if (result == DEFER || testflag(addr2, af_lt_retry_exists))
2834 int flags = result == DEFER ? 0 : rf_delete;
2835 uschar *retry_key = string_copy(tp->retry_use_local_part
2836 ? addr2->address_retry_key : addr2->domain_retry_key);
2838 retry_add_item(addr2, retry_key, flags);
2841 /* Done with this address */
2843 if (result == OK) addr2->more_errno = deliver_time;
2844 post_process_one(addr2, result, logflags, DTYPE_TRANSPORT, logchar);
2846 /* If a pipe delivery generated text to be sent back, the result may be
2847 changed to FAIL, and we must copy this for subsequent addresses in the
2850 if (addr2->transport_return != result)
2852 for (addr3 = nextaddr; addr3; addr3 = addr3->next)
2854 addr3->transport_return = addr2->transport_return;
2855 addr3->basic_errno = addr2->basic_errno;
2856 addr3->message = addr2->message;
2858 result = addr2->transport_return;
2861 /* Whether or not the result was changed to FAIL, we need to copy the
2862 return_file value from the first address into all the addresses of the
2863 batch, so they are all listed in the error message. */
2865 addr2->return_file = addr->return_file;
2867 /* Change log character for recording successful deliveries. */
2869 if (result == OK) logchar = '-';
2871 } /* Loop back for next batch of addresses */
2877 /*************************************************
2878 * Sort remote deliveries *
2879 *************************************************/
2881 /* This function is called if remote_sort_domains is set. It arranges that the
2882 chain of addresses for remote deliveries is ordered according to the strings
2883 specified. Try to make this shuffling reasonably efficient by handling
2884 sequences of addresses rather than just single ones.
2891 sort_remote_deliveries(void)
2894 address_item **aptr = &addr_remote;
2895 const uschar *listptr = remote_sort_domains;
2900 && (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf)))
2903 address_item *moved = NULL;
2904 address_item **bptr = &moved;
2908 address_item **next;
2909 deliver_domain = (*aptr)->domain; /* set $domain */
2910 if (match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1,
2911 &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK)
2913 aptr = &(*aptr)->next;
2917 next = &(*aptr)->next;
2919 && (deliver_domain = (*next)->domain, /* Set $domain */
2920 match_isinlist(deliver_domain, (const uschar **)&pattern, UCHAR_MAX+1,
2921 &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL)) != OK
2923 next = &(*next)->next;
2925 /* If the batch of non-matchers is at the end, add on any that were
2926 extracted further up the chain, and end this iteration. Otherwise,
2927 extract them from the chain and hang on the moved chain. */
2939 aptr = &(*aptr)->next;
2942 /* If the loop ended because the final address matched, *aptr will
2943 be NULL. Add on to the end any extracted non-matching addresses. If
2944 *aptr is not NULL, the loop ended via "break" when *next is null, that
2945 is, there was a string of non-matching addresses at the end. In this
2946 case the extracted addresses have already been added on the end. */
2948 if (!*aptr) *aptr = moved;
2954 debug_printf("remote addresses after sorting:\n");
2955 for (addr = addr_remote; addr; addr = addr->next)
2956 debug_printf(" %s\n", addr->address);
2962 /*************************************************
2963 * Read from pipe for remote delivery subprocess *
2964 *************************************************/
2966 /* This function is called when the subprocess is complete, but can also be
2967 called before it is complete, in order to empty a pipe that is full (to prevent
2968 deadlock). It must therefore keep track of its progress in the parlist data
2971 We read the pipe to get the delivery status codes and a possible error message
2972 for each address, optionally preceded by unusability data for the hosts and
2973 also by optional retry data.
2975 Read in large chunks into the big buffer and then scan through, interpreting
2976 the data therein. In most cases, only a single read will be necessary. No
2977 individual item will ever be anywhere near 2500 bytes in length, so by ensuring
2978 that we read the next chunk when there is less than 2500 bytes left in the
2979 non-final chunk, we can assume each item is complete in the buffer before
2980 handling it. Each item is written using a single write(), which is atomic for
2981 small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and
2982 often bigger) so even if we are reading while the subprocess is still going, we
2983 should never have only a partial item in the buffer.
2986 poffset the offset of the parlist item
2987 eop TRUE if the process has completed
2989 Returns: TRUE if the terminating 'Z' item has been read,
2990 or there has been a disaster (i.e. no more data needed);
2995 par_read_pipe(int poffset, BOOL eop)
2998 pardata *p = parlist + poffset;
2999 address_item *addrlist = p->addrlist;
3000 address_item *addr = p->addr;
3003 uschar *endptr = big_buffer;
3004 uschar *ptr = endptr;
3005 uschar *msg = p->msg;
3006 BOOL done = p->done;
3007 BOOL unfinished = TRUE;
3008 /* minimum size to read is header size including id, subid and length */
3009 int required = PIPE_HEADER_SIZE;
3011 /* Loop through all items, reading from the pipe when necessary. The pipe
3012 is set up to be non-blocking, but there are two different Unix mechanisms in
3013 use. Exim uses O_NONBLOCK if it is defined. This returns 0 for end of file,
3014 and EAGAIN for no more data. If O_NONBLOCK is not defined, Exim uses O_NDELAY,
3015 which returns 0 for both end of file and no more data. We distinguish the
3016 two cases by taking 0 as end of file only when we know the process has
3019 Each separate item is written to the pipe in a single write(), and as they are
3020 all short items, the writes will all be atomic and we should never find
3021 ourselves in the position of having read an incomplete item. "Short" in this
3022 case can mean up to about 1K in the case when there is a long error message
3023 associated with an address. */
3025 DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n",
3026 (int)p->pid, eop? "ended" : "not ended");
3030 retry_item *r, **rp;
3031 int remaining = endptr - ptr;
3032 uschar header[PIPE_HEADER_SIZE + 1];
3036 /* Read (first time) or top up the chars in the buffer if necessary.
3037 There will be only one read if we get all the available data (i.e. don't
3038 fill the buffer completely). */
3040 if (remaining < required && unfinished)
3043 int available = big_buffer_size - remaining;
3045 if (remaining > 0) memmove(big_buffer, ptr, remaining);
3048 endptr = big_buffer + remaining;
3049 len = read(fd, endptr, available);
3051 DEBUG(D_deliver) debug_printf("read() yielded %d\n", len);
3053 /* If the result is EAGAIN and the process is not complete, just
3054 stop reading any more and process what we have already. */
3058 if (!eop && errno == EAGAIN) len = 0; else
3060 msg = string_sprintf("failed to read pipe from transport process "
3061 "%d for transport %s: %s", pid, addr->transport->driver_name,
3067 /* If the length is zero (eof or no-more-data), just process what we
3068 already have. Note that if the process is still running and we have
3069 read all the data in the pipe (but less that "available") then we
3070 won't read any more, as "unfinished" will get set FALSE. */
3074 unfinished = len == available;
3077 /* If we are at the end of the available data, exit the loop. */
3078 if (ptr >= endptr) break;
3080 /* copy and read header */
3081 memcpy(header, ptr, PIPE_HEADER_SIZE);
3082 header[PIPE_HEADER_SIZE] = '\0';
3085 required = Ustrtol(header + 2, &endc, 10) + PIPE_HEADER_SIZE; /* header + data */
3088 msg = string_sprintf("failed to read pipe from transport process "
3089 "%d for transport %s: error reading size from header", pid, addr->transport->driver_name);
3095 debug_printf("header read id:%c,subid:%c,size:%s,required:%d,remaining:%d,unfinished:%d\n",
3096 id, subid, header+2, required, remaining, unfinished);
3098 /* is there room for the dataset we want to read ? */
3099 if (required > big_buffer_size - PIPE_HEADER_SIZE)
3101 msg = string_sprintf("failed to read pipe from transport process "
3102 "%d for transport %s: big_buffer too small! required size=%d buffer size=%d", pid, addr->transport->driver_name,
3103 required, big_buffer_size - PIPE_HEADER_SIZE);
3108 /* we wrote all datasets with atomic write() calls
3109 remaining < required only happens if big_buffer was too small
3110 to get all available data from pipe. unfinished has to be true
3112 if (remaining < required)
3116 msg = string_sprintf("failed to read pipe from transport process "
3117 "%d for transport %s: required size=%d > remaining size=%d and unfinished=false",
3118 pid, addr->transport->driver_name, required, remaining);
3123 /* step behind the header */
3124 ptr += PIPE_HEADER_SIZE;
3126 /* Handle each possible type of item, assuming the complete item is
3127 available in store. */
3131 /* Host items exist only if any hosts were marked unusable. Match
3132 up by checking the IP address. */
3135 for (h = addrlist->host_list; h; h = h->next)
3137 if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue;
3145 /* Retry items are sent in a preceding R item for each address. This is
3146 kept separate to keep each message short enough to guarantee it won't
3147 be split in the pipe. Hopefully, in the majority of cases, there won't in
3148 fact be any retry items at all.
3150 The complete set of retry items might include an item to delete a
3151 routing retry if there was a previous routing delay. However, routing
3152 retries are also used when a remote transport identifies an address error.
3153 In that case, there may also be an "add" item for the same key. Arrange
3154 that a "delete" item is dropped in favour of an "add" item. */
3157 if (!addr) goto ADDR_MISMATCH;
3159 DEBUG(D_deliver|D_retry)
3160 debug_printf("reading retry information for %s from subprocess\n",
3163 /* Cut out any "delete" items on the list. */
3165 for (rp = &(addr->retries); (r = *rp); rp = &r->next)
3166 if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */
3168 if ((r->flags & rf_delete) == 0) break; /* It was not "delete" */
3169 *rp = r->next; /* Excise a delete item */
3170 DEBUG(D_deliver|D_retry)
3171 debug_printf(" existing delete item dropped\n");
3174 /* We want to add a delete item only if there is no non-delete item;
3175 however we still have to step ptr through the data. */
3177 if (!r || (*ptr & rf_delete) == 0)
3179 r = store_get(sizeof(retry_item));
3180 r->next = addr->retries;
3183 r->key = string_copy(ptr);
3185 memcpy(&(r->basic_errno), ptr, sizeof(r->basic_errno));
3186 ptr += sizeof(r->basic_errno);
3187 memcpy(&(r->more_errno), ptr, sizeof(r->more_errno));
3188 ptr += sizeof(r->more_errno);
3189 r->message = (*ptr)? string_copy(ptr) : NULL;
3190 DEBUG(D_deliver|D_retry)
3191 debug_printf(" added %s item\n",
3192 ((r->flags & rf_delete) == 0)? "retry" : "delete");
3197 DEBUG(D_deliver|D_retry)
3198 debug_printf(" delete item not added: non-delete item exists\n");
3201 ptr += sizeof(r->basic_errno) + sizeof(r->more_errno);
3207 /* Put the amount of data written into the parlist block */
3210 memcpy(&(p->transport_count), ptr, sizeof(transport_count));
3211 ptr += sizeof(transport_count);
3214 /* Address items are in the order of items on the address chain. We
3215 remember the current address value in case this function is called
3216 several times to empty the pipe in stages. Information about delivery
3217 over TLS is sent in a preceding X item for each address. We don't put
3218 it in with the other info, in order to keep each message short enough to
3219 guarantee it won't be split in the pipe. */
3223 if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */
3227 addr->cipher = NULL;
3228 addr->peerdn = NULL;
3231 addr->cipher = string_copy(ptr);
3234 addr->peerdn = string_copy(ptr);
3239 (void) tls_import_cert(ptr, &addr->peercert);
3241 addr->peercert = NULL;
3246 (void) tls_import_cert(ptr, &addr->ourcert);
3248 addr->ourcert = NULL;
3251 # ifndef DISABLE_OCSP
3253 addr->ocsp = OCSP_NOT_REQ;
3255 addr->ocsp = *ptr - '0';
3261 #endif /*SUPPORT_TLS*/
3263 case 'C': /* client authenticator information */
3267 addr->authenticator = (*ptr)? string_copy(ptr) : NULL;
3270 addr->auth_id = (*ptr)? string_copy(ptr) : NULL;
3273 addr->auth_sndr = (*ptr)? string_copy(ptr) : NULL;
3279 #ifndef DISABLE_PRDR
3281 addr->flags |= af_prdr_used;
3286 if (!addr) goto ADDR_MISMATCH;
3287 memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware));
3288 ptr += sizeof(addr->dsn_aware);
3289 DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware);
3296 msg = string_sprintf("address count mismatch for data read from pipe "
3297 "for transport process %d for transport %s", pid,
3298 addrlist->transport->driver_name);
3305 #ifdef SUPPORT_SOCKS
3306 case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/
3307 proxy_session = TRUE; /*XXX shouod this be cleared somewhere? */
3312 proxy_local_address = string_copy(ptr);
3314 memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port));
3315 ptr += sizeof(proxy_local_port);
3320 #ifdef EXPERIMENTAL_DSN_INFO
3321 case '1': /* must arrive before A0, and applies to that addr */
3322 /* Two strings: smtp_greeting and helo_response */
3323 addr->smtp_greeting = string_copy(ptr);
3325 addr->helo_response = string_copy(ptr);
3331 addr->transport_return = *ptr++;
3332 addr->special_action = *ptr++;
3333 memcpy(&(addr->basic_errno), ptr, sizeof(addr->basic_errno));
3334 ptr += sizeof(addr->basic_errno);
3335 memcpy(&(addr->more_errno), ptr, sizeof(addr->more_errno));
3336 ptr += sizeof(addr->more_errno);
3337 memcpy(&(addr->flags), ptr, sizeof(addr->flags));
3338 ptr += sizeof(addr->flags);
3339 addr->message = (*ptr)? string_copy(ptr) : NULL;
3341 addr->user_message = (*ptr)? string_copy(ptr) : NULL;
3344 /* Always two strings for host information, followed by the port number and DNSSEC mark */
3348 h = store_get(sizeof(host_item));
3349 h->name = string_copy(ptr);
3351 h->address = string_copy(ptr);
3353 memcpy(&(h->port), ptr, sizeof(h->port));
3354 ptr += sizeof(h->port);
3355 h->dnssec = *ptr == '2' ? DS_YES
3356 : *ptr == '1' ? DS_NO
3359 addr->host_used = h;
3363 /* Finished with this address */
3370 /* Local interface address/port */
3372 if (*ptr) sending_ip_address = string_copy(ptr);
3374 if (*ptr) sending_port = atoi(CS ptr);
3378 /* Z marks the logical end of the data. It is followed by '0' if
3379 continue_transport was NULL at the end of transporting, otherwise '1'.
3380 We need to know when it becomes NULL during a delivery down a passed SMTP
3381 channel so that we don't try to pass anything more down it. Of course, for
3382 most normal messages it will remain NULL all the time. */
3387 continue_transport = NULL;
3388 continue_hostname = NULL;
3391 DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr);
3394 /* Anything else is a disaster. */
3397 msg = string_sprintf("malformed data (%d) read from pipe for transport "
3398 "process %d for transport %s", ptr[-1], pid,
3399 addr->transport->driver_name);
3405 /* The done flag is inspected externally, to determine whether or not to
3406 call the function again when the process finishes. */
3410 /* If the process hadn't finished, and we haven't seen the end of the data
3411 or suffered a disaster, update the rest of the state, and return FALSE to
3412 indicate "not finished". */
3421 /* Close our end of the pipe, to prevent deadlock if the far end is still
3422 pushing stuff into it. */
3427 /* If we have finished without error, but haven't had data for every address,
3428 something is wrong. */
3431 msg = string_sprintf("insufficient address data read from pipe "
3432 "for transport process %d for transport %s", pid,
3433 addr->transport->driver_name);
3435 /* If an error message is set, something has gone wrong in getting back
3436 the delivery data. Put the message into each address and freeze it. */
3439 for (addr = addrlist; addr; addr = addr->next)
3441 addr->transport_return = DEFER;
3442 addr->special_action = SPECIAL_FREEZE;
3443 addr->message = msg;
3446 /* Return TRUE to indicate we have got all we need from this process, even
3447 if it hasn't actually finished yet. */
3454 /*************************************************
3455 * Post-process a set of remote addresses *
3456 *************************************************/
3458 /* Do what has to be done immediately after a remote delivery for each set of
3459 addresses, then re-write the spool if necessary. Note that post_process_one
3460 puts the address on an appropriate queue; hence we must fish off the next
3461 one first. This function is also called if there is a problem with setting
3462 up a subprocess to do a remote delivery in parallel. In this case, the final
3463 argument contains a message, and the action must be forced to DEFER.
3466 addr pointer to chain of address items
3467 logflags flags for logging
3468 msg NULL for normal cases; -> error message for unexpected problems
3469 fallback TRUE if processing fallback hosts
3475 remote_post_process(address_item *addr, int logflags, uschar *msg,
3480 /* If any host addresses were found to be unusable, add them to the unusable
3481 tree so that subsequent deliveries don't try them. */
3483 for (h = addr->host_list; h; h = h->next)
3485 if (h->status >= hstatus_unusable) tree_add_unusable(h);
3487 /* Now handle each address on the chain. The transport has placed '=' or '-'
3488 into the special_action field for each successful delivery. */
3492 address_item *next = addr->next;
3494 /* If msg == NULL (normal processing) and the result is DEFER and we are
3495 processing the main hosts and there are fallback hosts available, put the
3496 address on the list for fallback delivery. */
3498 if ( addr->transport_return == DEFER
3499 && addr->fallback_hosts
3504 addr->host_list = addr->fallback_hosts;
3505 addr->next = addr_fallback;
3506 addr_fallback = addr;
3507 DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", addr->address);
3510 /* If msg is set (=> unexpected problem), set it in the address before
3511 doing the ordinary post processing. */
3517 addr->message = msg;
3518 addr->transport_return = DEFER;
3520 (void)post_process_one(addr, addr->transport_return, logflags,
3521 DTYPE_TRANSPORT, addr->special_action);
3529 /* If we have just delivered down a passed SMTP channel, and that was
3530 the last address, the channel will have been closed down. Now that
3531 we have logged that delivery, set continue_sequence to 1 so that
3532 any subsequent deliveries don't get "*" incorrectly logged. */
3534 if (!continue_transport) continue_sequence = 1;
3539 /*************************************************
3540 * Wait for one remote delivery subprocess *
3541 *************************************************/
3543 /* This function is called while doing remote deliveries when either the
3544 maximum number of processes exist and we need one to complete so that another
3545 can be created, or when waiting for the last ones to complete. It must wait for
3546 the completion of one subprocess, empty the control block slot, and return a
3547 pointer to the address chain.
3550 Returns: pointer to the chain of addresses handled by the process;
3551 NULL if no subprocess found - this is an unexpected error
3554 static address_item *
3557 int poffset, status;
3558 address_item *addr, *addrlist;
3561 set_process_info("delivering %s: waiting for a remote delivery subprocess "
3562 "to finish", message_id);
3564 /* Loop until either a subprocess completes, or there are no subprocesses in
3565 existence - in which case give an error return. We cannot proceed just by
3566 waiting for a completion, because a subprocess may have filled up its pipe, and
3567 be waiting for it to be emptied. Therefore, if no processes have finished, we
3568 wait for one of the pipes to acquire some data by calling select(), with a
3569 timeout just in case.
3571 The simple approach is just to iterate after reading data from a ready pipe.
3572 This leads to non-ideal behaviour when the subprocess has written its final Z
3573 item, closed the pipe, and is in the process of exiting (the common case). A
3574 call to waitpid() yields nothing completed, but select() shows the pipe ready -
3575 reading it yields EOF, so you end up with busy-waiting until the subprocess has
3578 To avoid this, if all the data that is needed has been read from a subprocess
3579 after select(), an explicit wait() for it is done. We know that all it is doing
3580 is writing to the pipe and then exiting, so the wait should not be long.
3582 The non-blocking waitpid() is to some extent just insurance; if we could
3583 reliably detect end-of-file on the pipe, we could always know when to do a
3584 blocking wait() for a completed process. However, because some systems use
3585 NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to
3586 use code that functions without the need to recognize EOF.
3588 There's a double loop here just in case we end up with a process that is not in
3589 the list of remote delivery processes. Something has obviously gone wrong if
3590 this is the case. (For example, a process that is incorrectly left over from
3591 routing or local deliveries might be found.) The damage can be minimized by
3592 looping back and looking for another process. If there aren't any, the error
3593 return will happen. */
3595 for (;;) /* Normally we do not repeat this loop */
3597 while ((pid = waitpid(-1, &status, WNOHANG)) <= 0)
3600 fd_set select_pipes;
3601 int maxpipe, readycount;
3603 /* A return value of -1 can mean several things. If errno != ECHILD, it
3604 either means invalid options (which we discount), or that this process was
3605 interrupted by a signal. Just loop to try the waitpid() again.
3607 If errno == ECHILD, waitpid() is telling us that there are no subprocesses
3608 in existence. This should never happen, and is an unexpected error.
3609 However, there is a nasty complication when running under Linux. If "strace
3610 -f" is being used under Linux to trace this process and its children,
3611 subprocesses are "stolen" from their parents and become the children of the
3612 tracing process. A general wait such as the one we've just obeyed returns
3613 as if there are no children while subprocesses are running. Once a
3614 subprocess completes, it is restored to the parent, and waitpid(-1) finds
3615 it. Thanks to Joachim Wieland for finding all this out and suggesting a
3618 This does not happen using "truss" on Solaris, nor (I think) with other
3619 tracing facilities on other OS. It seems to be specific to Linux.
3621 What we do to get round this is to use kill() to see if any of our
3622 subprocesses are still in existence. If kill() gives an OK return, we know
3623 it must be for one of our processes - it can't be for a re-use of the pid,
3624 because if our process had finished, waitpid() would have found it. If any
3625 of our subprocesses are in existence, we proceed to use select() as if
3626 waitpid() had returned zero. I think this is safe. */
3630 if (errno != ECHILD) continue; /* Repeats the waitpid() */
3633 debug_printf("waitpid() returned -1/ECHILD: checking explicitly "
3634 "for process existence\n");
3636 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3638 if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0)
3640 DEBUG(D_deliver) debug_printf("process %d still exists: assume "
3641 "stolen by strace\n", (int)pid);
3642 break; /* With poffset set */
3646 if (poffset >= remote_max_parallel)
3648 DEBUG(D_deliver) debug_printf("*** no delivery children found\n");
3649 return NULL; /* This is the error return */
3653 /* A pid value greater than 0 breaks the "while" loop. A negative value has
3654 been handled above. A return value of zero means that there is at least one
3655 subprocess, but there are no completed subprocesses. See if any pipes are
3656 ready with any data for reading. */
3658 DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n");
3661 FD_ZERO(&select_pipes);
3662 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3664 if (parlist[poffset].pid != 0)
3666 int fd = parlist[poffset].fd;
3667 FD_SET(fd, &select_pipes);
3668 if (fd > maxpipe) maxpipe = fd;
3672 /* Stick in a 60-second timeout, just in case. */
3677 readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes,
3680 /* Scan through the pipes and read any that are ready; use the count
3681 returned by select() to stop when there are no more. Select() can return
3682 with no processes (e.g. if interrupted). This shouldn't matter.
3684 If par_read_pipe() returns TRUE, it means that either the terminating Z was
3685 read, or there was a disaster. In either case, we are finished with this
3686 process. Do an explicit wait() for the process and break the main loop if
3689 It turns out that we have to deal with the case of an interrupted system
3690 call, which can happen on some operating systems if the signal handling is
3691 set up to do that by default. */
3694 readycount > 0 && poffset < remote_max_parallel;
3697 if ( (pid = parlist[poffset].pid) != 0
3698 && FD_ISSET(parlist[poffset].fd, &select_pipes)
3702 if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */
3704 for (;;) /* Loop for signals */
3706 pid_t endedpid = waitpid(pid, &status, 0);
3707 if (endedpid == pid) goto PROCESS_DONE;
3708 if (endedpid != (pid_t)(-1) || errno != EINTR)
3709 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return "
3710 "%d (errno = %d) from waitpid() for process %d",
3711 (int)endedpid, errno, (int)pid);
3717 /* Now go back and look for a completed subprocess again. */
3720 /* A completed process was detected by the non-blocking waitpid(). Find the
3721 data block that corresponds to this subprocess. */
3723 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3724 if (pid == parlist[poffset].pid) break;
3726 /* Found the data block; this is a known remote delivery process. We don't
3727 need to repeat the outer loop. This should be what normally happens. */
3729 if (poffset < remote_max_parallel) break;
3731 /* This situation is an error, but it's probably better to carry on looking
3732 for another process than to give up (as we used to do). */
3734 log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote "
3735 "transport process list", pid);
3736 } /* End of the "for" loop */
3738 /* Come here when all the data was completely read after a select(), and
3739 the process in pid has been wait()ed for. */
3746 debug_printf("remote delivery process %d ended\n", (int)pid);
3748 debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid,
3752 set_process_info("delivering %s", message_id);
3754 /* Get the chain of processed addresses */
3756 addrlist = parlist[poffset].addrlist;
3758 /* If the process did not finish cleanly, record an error and freeze (except
3759 for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed,
3760 in case the delivery did actually happen. */
3762 if ((status & 0xffff) != 0)
3765 int msb = (status >> 8) & 255;
3766 int lsb = status & 255;
3767 int code = (msb == 0)? (lsb & 0x7f) : msb;
3769 msg = string_sprintf("%s transport process returned non-zero status 0x%04x: "
3771 addrlist->transport->driver_name,
3773 (msb == 0)? "terminated by signal" : "exit code",
3776 if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT))
3777 addrlist->special_action = SPECIAL_FREEZE;
3779 for (addr = addrlist; addr; addr = addr->next)
3781 addr->transport_return = DEFER;
3782 addr->message = msg;
3785 remove_journal = FALSE;
3788 /* Else complete reading the pipe to get the result of the delivery, if all
3789 the data has not yet been obtained. */
3791 else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE);
3793 /* Put the data count and return path into globals, mark the data slot unused,
3794 decrement the count of subprocesses, and return the address chain. */
3796 transport_count = parlist[poffset].transport_count;
3797 used_return_path = parlist[poffset].return_path;
3798 parlist[poffset].pid = 0;
3805 /*************************************************
3806 * Wait for subprocesses and post-process *
3807 *************************************************/
3809 /* This function waits for subprocesses until the number that are still running
3810 is below a given threshold. For each complete subprocess, the addresses are
3811 post-processed. If we can't find a running process, there is some shambles.
3812 Better not bomb out, as that might lead to multiple copies of the message. Just
3813 log and proceed as if all done.
3816 max maximum number of subprocesses to leave running
3817 fallback TRUE if processing fallback hosts
3823 par_reduce(int max, BOOL fallback)
3825 while (parcount > max)
3827 address_item *doneaddr = par_wait();
3830 log_write(0, LOG_MAIN|LOG_PANIC,
3831 "remote delivery process count got out of step");
3836 transport_instance * tp = doneaddr->transport;
3837 if (tp->max_parallel)
3838 enq_end(string_sprintf("tpt-serialize-%s", tp->name));
3840 remote_post_process(doneaddr, LOG_MAIN, NULL, fallback);
3849 rmt_dlv_checked_write(int fd, char id, char subid, void * buf, int size)
3851 uschar writebuffer[PIPE_HEADER_SIZE + BIG_BUFFER_SIZE];
3855 /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */
3856 /* complain to log if someone tries with buffer sizes we can't handle*/
3860 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3861 "Failed writing transport result to pipe: can't handle buffers > 99999 bytes. truncating!\n");
3865 /* to keep the write() atomic we build header in writebuffer and copy buf behind */
3866 /* two write() calls would increase the complexity of reading from pipe */
3868 /* convert size to human readable string prepended by id and subid */
3869 header_length = snprintf(CS writebuffer, PIPE_HEADER_SIZE+1, "%c%c%05d", id, subid, size);
3870 if (header_length != PIPE_HEADER_SIZE)
3872 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n");
3873 writebuffer[0] = '\0';
3876 DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%d,final:%s\n",
3877 id, subid, size, writebuffer);
3879 if (buf && size > 0)
3880 memcpy(writebuffer + PIPE_HEADER_SIZE, buf, size);
3882 size += PIPE_HEADER_SIZE;
3883 if ((ret = write(fd, writebuffer, size)) != size)
3884 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed writing transport result to pipe: %s\n",
3885 ret == -1 ? strerror(errno) : "short write");
3888 /*************************************************
3889 * Do remote deliveries *
3890 *************************************************/
3892 /* This function is called to process the addresses in addr_remote. We must
3893 pick off the queue all addresses that have the same transport, remote
3894 destination, and errors address, and hand them to the transport in one go,
3895 subject to some configured limitations. If this is a run to continue delivering
3896 to an existing delivery channel, skip all but those addresses that can go to
3897 that channel. The skipped addresses just get deferred.
3899 If mua_wrapper is set, all addresses must be able to be sent in a single
3900 transaction. If not, this function yields FALSE.
3902 In Exim 4, remote deliveries are always done in separate processes, even
3903 if remote_max_parallel = 1 or if there's only one delivery to do. The reason
3904 is so that the base process can retain privilege. This makes the
3905 implementation of fallback transports feasible (though not initially done.)
3907 We create up to the configured number of subprocesses, each of which passes
3908 back the delivery state via a pipe. (However, when sending down an existing
3909 connection, remote_max_parallel is forced to 1.)
3912 fallback TRUE if processing fallback hosts
3914 Returns: TRUE normally
3915 FALSE if mua_wrapper is set and the addresses cannot all be sent
3920 do_remote_deliveries(BOOL fallback)
3926 parcount = 0; /* Number of executing subprocesses */
3928 /* When sending down an existing channel, only do one delivery at a time.
3929 We use a local variable (parmax) to hold the maximum number of processes;
3930 this gets reduced from remote_max_parallel if we can't create enough pipes. */
3932 if (continue_transport) remote_max_parallel = 1;
3933 parmax = remote_max_parallel;
3935 /* If the data for keeping a list of processes hasn't yet been
3940 parlist = store_get(remote_max_parallel * sizeof(pardata));
3941 for (poffset = 0; poffset < remote_max_parallel; poffset++)
3942 parlist[poffset].pid = 0;
3945 /* Now loop for each remote delivery */
3947 for (delivery_count = 0; addr_remote; delivery_count++)
3953 int address_count = 1;
3954 int address_count_max;
3956 BOOL use_initgroups;
3957 BOOL pipe_done = FALSE;
3958 transport_instance *tp;
3959 address_item **anchor = &addr_remote;
3960 address_item *addr = addr_remote;
3961 address_item *last = addr;
3964 uschar * serialize_key = NULL;
3966 /* Pull the first address right off the list. */
3968 addr_remote = addr->next;
3971 DEBUG(D_deliver|D_transport)
3972 debug_printf("--------> %s <--------\n", addr->address);
3974 /* If no transport has been set, there has been a big screw-up somewhere. */
3976 if (!(tp = addr->transport))
3978 disable_logging = FALSE; /* Jic */
3979 panicmsg = US"No transport set by router";
3980 goto panic_continue;
3983 /* Check that this base address hasn't previously been delivered to this
3984 transport. The check is necessary at this point to handle homonymic addresses
3985 correctly in cases where the pattern of redirection changes between delivery
3986 attempts. Non-homonymic previous delivery is detected earlier, at routing
3989 if (previously_transported(addr, FALSE)) continue;
3991 /* Force failure if the message is too big. */
3993 if (tp->message_size_limit)
3995 int rc = check_message_size(tp, addr);
3998 addr->transport_return = rc;
3999 remote_post_process(addr, LOG_MAIN, NULL, fallback);
4004 /* Get the flag which specifies whether the transport can handle different
4005 domains that nevertheless resolve to the same set of hosts. If it needs
4006 expanding, get variables set: $address_data, $domain_data, $localpart_data,
4007 $host, $host_address, $host_port. */
4008 if (tp->expand_multi_domain)
4009 deliver_set_expansions(addr);
4011 if (exp_bool(addr, US"transport", tp->name, D_transport,
4012 US"multi_domain", tp->multi_domain, tp->expand_multi_domain,
4013 &multi_domain) != OK)
4015 deliver_set_expansions(NULL);
4016 panicmsg = addr->message;
4017 goto panic_continue;
4020 /* Get the maximum it can handle in one envelope, with zero meaning
4021 unlimited, which is forced for the MUA wrapper case. */
4023 address_count_max = tp->max_addresses;
4024 if (address_count_max == 0 || mua_wrapper) address_count_max = 999999;
4027 /************************************************************************/
4028 /***** This is slightly experimental code, but should be safe. *****/
4030 /* The address_count_max value is the maximum number of addresses that the
4031 transport can send in one envelope. However, the transport must be capable of
4032 dealing with any number of addresses. If the number it gets exceeds its
4033 envelope limitation, it must send multiple copies of the message. This can be
4034 done over a single connection for SMTP, so uses less resources than making
4035 multiple connections. On the other hand, if remote_max_parallel is greater
4036 than one, it is perhaps a good idea to use parallel processing to move the
4037 message faster, even if that results in multiple simultaneous connections to
4040 How can we come to some compromise between these two ideals? What we do is to
4041 limit the number of addresses passed to a single instance of a transport to
4042 the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total
4043 number of addresses routed to remote transports divided by
4044 remote_max_parallel. For example, if the message has 100 remote recipients,
4045 remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at
4046 once. But if rcpt_max is 100, we could send up to 100.
4048 Of course, not all the remotely addresses in a message are going to go to the
4049 same set of hosts (except in smarthost configurations), so this is just a
4050 heuristic way of dividing up the work.
4052 Furthermore (1), because this may not be wanted in some cases, and also to
4053 cope with really pathological cases, there is also a limit to the number of
4054 messages that are sent over one connection. This is the same limit that is
4055 used when sending several different messages over the same connection.
4056 Continue_sequence is set when in this situation, to the number sent so
4057 far, including this message.
4059 Furthermore (2), when somebody explicitly sets the maximum value to 1, it
4060 is probably because they are using VERP, in which case they want to pass only
4061 one address at a time to the transport, in order to be able to use
4062 $local_part and $domain in constructing a new return path. We could test for
4063 the use of these variables, but as it is so likely they will be used when the
4064 maximum is 1, we don't bother. Just leave the value alone. */
4066 if ( address_count_max != 1
4067 && address_count_max < remote_delivery_count/remote_max_parallel
4070 int new_max = remote_delivery_count/remote_max_parallel;
4071 int message_max = tp->connection_max_messages;
4072 if (connection_max_messages >= 0) message_max = connection_max_messages;
4073 message_max -= continue_sequence - 1;
4074 if (message_max > 0 && new_max > address_count_max * message_max)
4075 new_max = address_count_max * message_max;
4076 address_count_max = new_max;
4079 /************************************************************************/
4082 /* Pick off all addresses which have the same transport, errors address,
4083 destination, and extra headers. In some cases they point to the same host
4084 list, but we also need to check for identical host lists generated from
4085 entirely different domains. The host list pointers can be NULL in the case
4086 where the hosts are defined in the transport. There is also a configured
4087 maximum limit of addresses that can be handled at once (see comments above
4088 for how it is computed).
4089 If the transport does not handle multiple domains, enforce that also,
4090 and if it might need a per-address check for this, re-evaluate it.
4093 while ((next = *anchor) && address_count < address_count_max)
4096 if ( (multi_domain || Ustrcmp(next->domain, addr->domain) == 0)
4097 && tp == next->transport
4098 && same_hosts(next->host_list, addr->host_list)
4099 && same_strings(next->prop.errors_address, addr->prop.errors_address)
4100 && same_headers(next->prop.extra_headers, addr->prop.extra_headers)
4101 && same_ugid(tp, next, addr)
4102 && ( next->prop.remove_headers == addr->prop.remove_headers
4103 || ( next->prop.remove_headers
4104 && addr->prop.remove_headers
4105 && Ustrcmp(next->prop.remove_headers, addr->prop.remove_headers) == 0
4109 !tp->expand_multi_domain || (deliver_set_expansions(next), 1),
4111 US"transport", next->transport->name, D_transport,
4112 US"multi_domain", next->transport->multi_domain,
4113 next->transport->expand_multi_domain, &md) == OK
4118 *anchor = next->next;
4120 next->first = addr; /* remember top one (for retry processing) */
4125 else anchor = &(next->next);
4126 deliver_set_expansions(NULL);
4129 /* If we are acting as an MUA wrapper, all addresses must go in a single
4130 transaction. If not, put them back on the chain and yield FALSE. */
4132 if (mua_wrapper && addr_remote)
4134 last->next = addr_remote;
4139 /* If the transport is limited for parallellism, enforce that here.
4140 The hints DB entry is decremented in par_reduce(), when we reap the
4141 transport process. */
4143 if (tpt_parallel_check(tp, addr, &serialize_key))
4144 if ((panicmsg = expand_string_message))
4145 goto panic_continue;
4147 continue; /* Loop for the next set of addresses. */
4149 /* Set up the expansion variables for this set of addresses */
4151 deliver_set_expansions(addr);
4153 /* Ensure any transport-set auth info is fresh */
4154 addr->authenticator = addr->auth_id = addr->auth_sndr = NULL;
4156 /* Compute the return path, expanding a new one if required. The old one
4157 must be set first, as it might be referred to in the expansion. */
4159 if(addr->prop.errors_address)
4160 return_path = addr->prop.errors_address;
4161 #ifdef EXPERIMENTAL_SRS
4162 else if(addr->prop.srs_sender)
4163 return_path = addr->prop.srs_sender;
4166 return_path = sender_address;
4168 if (tp->return_path)
4170 uschar *new_return_path = expand_string(tp->return_path);
4171 if (new_return_path)
4172 return_path = new_return_path;
4173 else if (!expand_string_forcedfail)
4175 panicmsg = string_sprintf("Failed to expand return path \"%s\": %s",
4176 tp->return_path, expand_string_message);
4181 /* Find the uid, gid, and use_initgroups setting for this transport. Failure
4182 logs and sets up error messages, so we just post-process and continue with
4183 the next address. */
4185 if (!findugid(addr, tp, &uid, &gid, &use_initgroups))
4191 /* If this transport has a setup function, call it now so that it gets
4192 run in this process and not in any subprocess. That way, the results of
4193 any setup that are retained by the transport can be reusable. One of the
4194 things the setup does is to set the fallback host lists in the addresses.
4195 That is why it is called at this point, before the continue delivery
4196 processing, because that might use the fallback hosts. */
4199 (void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL));
4201 /* If this is a run to continue delivery down an already-established
4202 channel, check that this set of addresses matches the transport and
4203 the channel. If it does not, defer the addresses. If a host list exists,
4204 we must check that the continue host is on the list. Otherwise, the
4205 host is set in the transport. */
4207 continue_more = FALSE; /* In case got set for the last lot */
4208 if (continue_transport)
4210 BOOL ok = Ustrcmp(continue_transport, tp->name) == 0;
4211 if (ok && addr->host_list)
4215 for (h = addr->host_list; h; h = h->next)
4216 if (Ustrcmp(h->name, continue_hostname) == 0)
4217 { ok = TRUE; break; }
4220 /* Addresses not suitable; defer or queue for fallback hosts (which
4221 might be the continue host) and skip to next address. */
4225 DEBUG(D_deliver) debug_printf("not suitable for continue_transport\n");
4226 if (serialize_key) enq_end(serialize_key);
4228 if (addr->fallback_hosts && !fallback)
4230 for (next = addr; ; next = next->next)
4232 next->host_list = next->fallback_hosts;
4233 DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address);
4234 if (!next->next) break;
4236 next->next = addr_fallback;
4237 addr_fallback = addr;
4242 while (next->next) next = next->next;
4243 next->next = addr_defer;
4250 /* Set a flag indicating whether there are further addresses that list
4251 the continued host. This tells the transport to leave the channel open,
4252 but not to pass it to another delivery process. */
4254 for (next = addr_remote; next; next = next->next)
4257 for (h = next->host_list; h; h = h->next)
4258 if (Ustrcmp(h->name, continue_hostname) == 0)
4259 { continue_more = TRUE; break; }
4263 /* The transports set up the process info themselves as they may connect
4264 to more than one remote machine. They also have to set up the filter
4265 arguments, if required, so that the host name and address are available
4268 transport_filter_argv = NULL;
4270 /* Create the pipe for inter-process communication. If pipe creation
4271 fails, it is probably because the value of remote_max_parallel is so
4272 large that too many file descriptors for pipes have been created. Arrange
4273 to wait for a process to finish, and then try again. If we still can't
4274 create a pipe when all processes have finished, break the retry loop. */
4278 if (pipe(pfd) == 0) pipe_done = TRUE;
4279 else if (parcount > 0) parmax = parcount;
4282 /* We need to make the reading end of the pipe non-blocking. There are
4283 two different options for this. Exim is cunningly (I hope!) coded so
4284 that it can use either of them, though it prefers O_NONBLOCK, which
4285 distinguishes between EOF and no-more-data. */
4288 (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK);
4290 (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY);
4293 /* If the maximum number of subprocesses already exist, wait for a process
4294 to finish. If we ran out of file descriptors, parmax will have been reduced
4295 from its initial value of remote_max_parallel. */
4297 par_reduce(parmax - 1, fallback);
4300 /* If we failed to create a pipe and there were no processes to wait
4301 for, we have to give up on this one. Do this outside the above loop
4302 so that we can continue the main loop. */
4306 panicmsg = string_sprintf("unable to create pipe: %s", strerror(errno));
4310 /* Find a free slot in the pardata list. Must do this after the possible
4311 waiting for processes to finish, because a terminating process will free
4314 for (poffset = 0; poffset < remote_max_parallel; poffset++)
4315 if (parlist[poffset].pid == 0)
4318 /* If there isn't one, there has been a horrible disaster. */
4320 if (poffset >= remote_max_parallel)
4322 (void)close(pfd[pipe_write]);
4323 (void)close(pfd[pipe_read]);
4324 panicmsg = US"Unexpectedly no free subprocess slot";
4328 /* Now fork a subprocess to do the remote delivery, but before doing so,
4329 ensure that any cached resourses are released so as not to interfere with
4330 what happens in the subprocess. */
4334 if ((pid = fork()) == 0)
4336 int fd = pfd[pipe_write];
4339 /* Setting this global in the subprocess means we need never clear it */
4340 transport_name = tp->name;
4342 /* There are weird circumstances in which logging is disabled */
4343 disable_logging = tp->disable_logging;
4345 /* Show pids on debug output if parallelism possible */
4347 if (parmax > 1 && (parcount > 0 || addr_remote))
4349 DEBUG(D_any|D_v) debug_selector |= D_pid;
4350 DEBUG(D_deliver) debug_printf("Remote delivery process started\n");
4353 /* Reset the random number generator, so different processes don't all
4354 have the same sequence. In the test harness we want different, but
4355 predictable settings for each delivery process, so do something explicit
4356 here rather they rely on the fixed reset in the random number function. */
4358 random_seed = running_in_test_harness? 42 + 2*delivery_count : 0;
4360 /* Set close-on-exec on the pipe so that it doesn't get passed on to
4361 a new process that may be forked to do another delivery down the same
4364 (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
4366 /* Close open file descriptors for the pipes of other processes
4367 that are running in parallel. */
4369 for (poffset = 0; poffset < remote_max_parallel; poffset++)
4370 if (parlist[poffset].pid != 0) (void)close(parlist[poffset].fd);
4372 /* This process has inherited a copy of the file descriptor
4373 for the data file, but its file pointer is shared with all the
4374 other processes running in parallel. Therefore, we have to re-open
4375 the file in order to get a new file descriptor with its own
4376 file pointer. We don't need to lock it, as the lock is held by
4377 the parent process. There doesn't seem to be any way of doing
4378 a dup-with-new-file-pointer. */
4380 (void)close(deliver_datafile);
4381 sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir,
4383 deliver_datafile = Uopen(spoolname, O_RDWR | O_APPEND, 0);
4385 if (deliver_datafile < 0)
4386 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote "
4387 "parallel delivery: %s", spoolname, strerror(errno));
4389 /* Set the close-on-exec flag */
4391 (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) |
4394 /* Set the uid/gid of this process; bombs out on failure. */
4396 exim_setugid(uid, gid, use_initgroups,
4397 string_sprintf("remote delivery to %s with transport=%s",
4398 addr->address, tp->name));
4400 /* Close the unwanted half of this process' pipe, set the process state,
4401 and run the transport. Afterwards, transport_count will contain the number
4402 of bytes written. */
4404 (void)close(pfd[pipe_read]);
4405 set_process_info("delivering %s using %s", message_id, tp->name);
4406 debug_print_string(tp->debug_string);
4407 if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr);
4409 set_process_info("delivering %s (just run %s for %s%s in subprocess)",
4410 message_id, tp->name, addr->address, addr->next ? ", ..." : "");
4412 /* Ensure any cached resources that we used are now released */
4416 /* Pass the result back down the pipe. This is a lot more information
4417 than is needed for a local delivery. We have to send back the error
4418 status for each address, the usability status for each host that is
4419 flagged as unusable, and all the retry items. When TLS is in use, we
4420 send also the cipher and peerdn information. Each type of information
4421 is flagged by an identifying byte, and is then in a fixed format (with
4422 strings terminated by zeros), and there is a final terminator at the
4423 end. The host information and retry information is all attached to
4424 the first address, so that gets sent at the start. */
4426 /* Host unusability information: for most success cases this will
4429 for (h = addr->host_list; h; h = h->next)
4431 if (!h->address || h->status < hstatus_unusable) continue;
4432 sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address);
4433 rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3);
4436 /* The number of bytes written. This is the same for each address. Even
4437 if we sent several copies of the message down the same connection, the
4438 size of each one is the same, and it's that value we have got because
4439 transport_count gets reset before calling transport_write_message(). */
4441 memcpy(big_buffer, &transport_count, sizeof(transport_count));
4442 rmt_dlv_checked_write(fd, 'S', '0', big_buffer, sizeof(transport_count));
4444 /* Information about what happened to each address. Four item types are
4445 used: an optional 'X' item first, for TLS information, then an optional "C"
4446 item for any client-auth info followed by 'R' items for any retry settings,
4447 and finally an 'A' item for the remaining data. */
4449 for(; addr; addr = addr->next)
4454 /* The certificate verification status goes into the flags */
4455 if (tls_out.certificate_verified) setflag(addr, af_cert_verified);
4456 #ifdef EXPERIMENTAL_DANE
4457 if (tls_out.dane_verified) setflag(addr, af_dane_verified);
4460 /* Use an X item only if there's something to send */
4464 ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1;
4469 ptr += sprintf(CS ptr, "%.512s", addr->peerdn);
4473 rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer);
4478 if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert))
4482 rmt_dlv_checked_write(fd, 'X', '2', big_buffer, ptr - big_buffer);
4487 if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert))
4491 rmt_dlv_checked_write(fd, 'X', '3', big_buffer, ptr - big_buffer);
4493 # ifndef DISABLE_OCSP
4494 if (addr->ocsp > OCSP_NOT_REQ)
4496 ptr = big_buffer + sprintf(CS big_buffer, "%c", addr->ocsp + '0') + 1;
4497 rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer);
4500 #endif /*SUPPORT_TLS*/
4502 if (client_authenticator)
4504 ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticator) + 1;
4505 rmt_dlv_checked_write(fd, 'C', '1', big_buffer, ptr - big_buffer);
4507 if (client_authenticated_id)
4509 ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_id) + 1;
4510 rmt_dlv_checked_write(fd, 'C', '2', big_buffer, ptr - big_buffer);
4512 if (client_authenticated_sender)
4514 ptr = big_buffer + sprintf(CS big_buffer, "%.64s", client_authenticated_sender) + 1;
4515 rmt_dlv_checked_write(fd, 'C', '3', big_buffer, ptr - big_buffer);
4518 #ifndef DISABLE_PRDR
4519 if (addr->flags & af_prdr_used)
4520 rmt_dlv_checked_write(fd, 'P', '0', NULL, 0);
4523 memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware));
4524 rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware));
4525 DEBUG(D_deliver) debug_printf("DSN write: addr->dsn_aware = %d\n", addr->dsn_aware);
4527 /* Retry information: for most success cases this will be null. */
4529 for (r = addr->retries; r; r = r->next)
4531 sprintf(CS big_buffer, "%c%.500s", r->flags, r->key);
4532 ptr = big_buffer + Ustrlen(big_buffer+2) + 3;
4533 memcpy(ptr, &(r->basic_errno), sizeof(r->basic_errno));
4534 ptr += sizeof(r->basic_errno);
4535 memcpy(ptr, &(r->more_errno), sizeof(r->more_errno));
4536 ptr += sizeof(r->more_errno);
4537 if (!r->message) *ptr++ = 0; else
4539 sprintf(CS ptr, "%.512s", r->message);
4542 rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer);
4545 #ifdef SUPPORT_SOCKS
4546 if (LOGGING(proxy) && proxy_session)
4549 if (proxy_local_address)
4551 DEBUG(D_deliver) debug_printf("proxy_local_address '%s'\n", proxy_local_address);
4552 ptr = big_buffer + sprintf(CS ptr, "%.128s", proxy_local_address) + 1;
4553 DEBUG(D_deliver) debug_printf("proxy_local_port %d\n", proxy_local_port);
4554 memcpy(ptr, &proxy_local_port, sizeof(proxy_local_port));
4555 ptr += sizeof(proxy_local_port);
4559 rmt_dlv_checked_write(fd, 'A', '2', big_buffer, ptr - big_buffer);
4563 #ifdef EXPERIMENTAL_DSN_INFO
4564 /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */
4565 if (addr->smtp_greeting)
4567 DEBUG(D_deliver) debug_printf("smtp_greeting '%s'\n", addr->smtp_greeting);
4568 ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->smtp_greeting) + 1;
4569 if (addr->helo_response)
4571 DEBUG(D_deliver) debug_printf("helo_response '%s'\n", addr->helo_response);
4572 ptr += sprintf(CS ptr, "%.128s", addr->helo_response) + 1;
4576 rmt_dlv_checked_write(fd, 'A', '1', big_buffer, ptr - big_buffer);
4580 /* The rest of the information goes in an 'A0' item. */
4582 sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action);
4583 ptr = big_buffer + 2;
4584 memcpy(ptr, &(addr->basic_errno), sizeof(addr->basic_errno));
4585 ptr += sizeof(addr->basic_errno);
4586 memcpy(ptr, &(addr->more_errno), sizeof(addr->more_errno));
4587 ptr += sizeof(addr->more_errno);
4588 memcpy(ptr, &(addr->flags), sizeof(addr->flags));
4589 ptr += sizeof(addr->flags);
4591 if (!addr->message) *ptr++ = 0; else
4592 ptr += sprintf(CS ptr, "%.1024s", addr->message) + 1;
4594 if (!addr->user_message) *ptr++ = 0; else
4595 ptr += sprintf(CS ptr, "%.1024s", addr->user_message) + 1;
4597 if (!addr->host_used) *ptr++ = 0; else
4599 ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1;
4600 ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1;
4601 memcpy(ptr, &(addr->host_used->port), sizeof(addr->host_used->port));
4602 ptr += sizeof(addr->host_used->port);
4604 /* DNS lookup status */
4605 *ptr++ = addr->host_used->dnssec==DS_YES ? '2'
4606 : addr->host_used->dnssec==DS_NO ? '1' : '0';
4609 rmt_dlv_checked_write(fd, 'A', '0', big_buffer, ptr - big_buffer);
4612 /* Local interface address/port */
4613 #ifdef EXPERIMENTAL_DSN_INFO
4614 if (sending_ip_address)
4616 if (LOGGING(incoming_interface) && sending_ip_address)
4620 ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1;
4621 ptr += sprintf(CS ptr, "%d", sending_port) + 1;
4622 rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer);
4625 /* Add termination flag, close the pipe, and that's it. The character
4626 after 'Z' indicates whether continue_transport is now NULL or not.
4627 A change from non-NULL to NULL indicates a problem with a continuing
4630 big_buffer[0] = continue_transport ? '1' : '0';
4631 rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1);
4636 /* Back in the mainline: close the unwanted half of the pipe. */
4638 (void)close(pfd[pipe_write]);
4640 /* Fork failed; defer with error message */
4644 (void)close(pfd[pipe_read]);
4645 panicmsg = string_sprintf("fork failed for remote delivery to %s: %s",
4646 addr->domain, strerror(errno));
4650 /* Fork succeeded; increment the count, and remember relevant data for
4651 when the process finishes. */
4654 parlist[poffset].addrlist = parlist[poffset].addr = addr;
4655 parlist[poffset].pid = pid;
4656 parlist[poffset].fd = pfd[pipe_read];
4657 parlist[poffset].done = FALSE;
4658 parlist[poffset].msg = NULL;
4659 parlist[poffset].return_path = return_path;
4661 /* If the process we've just started is sending a message down an existing
4662 channel, wait for it now. This ensures that only one such process runs at
4663 once, whatever the value of remote_max parallel. Otherwise, we might try to
4664 send two or more messages simultaneously down the same channel. This could
4665 happen if there are different domains that include the same host in otherwise
4666 different host lists.
4668 Also, if the transport closes down the channel, this information gets back
4669 (continue_transport gets set to NULL) before we consider any other addresses
4672 if (continue_transport) par_reduce(0, fallback);
4674 /* Otherwise, if we are running in the test harness, wait a bit, to let the
4675 newly created process get going before we create another process. This should
4676 ensure repeatability in the tests. We only need to wait a tad. */
4678 else if (running_in_test_harness) millisleep(500);
4683 if (serialize_key) enq_end(serialize_key);
4685 remote_post_process(addr, LOG_MAIN|LOG_PANIC, panicmsg, fallback);
4689 /* Reached the end of the list of addresses. Wait for all the subprocesses that
4690 are still running and post-process their addresses. */
4692 par_reduce(0, fallback);
4699 /*************************************************
4700 * Split an address into local part and domain *
4701 *************************************************/
4703 /* This function initializes an address for routing by splitting it up into a
4704 local part and a domain. The local part is set up twice - once in its original
4705 casing, and once in lower case, and it is dequoted. We also do the "percent
4706 hack" for configured domains. This may lead to a DEFER result if a lookup
4707 defers. When a percent-hacking takes place, we insert a copy of the original
4708 address as a new parent of this address, as if we have had a redirection.
4711 addr points to an addr_item block containing the address
4714 DEFER - could not determine if domain is %-hackable
4718 deliver_split_address(address_item *addr)
4720 uschar *address = addr->address;
4721 uschar *domain = Ustrrchr(address, '@');
4723 int len = domain - address;
4725 addr->domain = string_copylc(domain+1); /* Domains are always caseless */
4727 /* The implication in the RFCs (though I can't say I've seen it spelled out
4728 explicitly) is that quoting should be removed from local parts at the point
4729 where they are locally interpreted. [The new draft "821" is more explicit on
4730 this, Jan 1999.] We know the syntax is valid, so this can be done by simply
4731 removing quoting backslashes and any unquoted doublequotes. */
4733 t = addr->cc_local_part = store_get(len+1);
4736 register int c = *address++;
4737 if (c == '\"') continue;
4747 /* We do the percent hack only for those domains that are listed in
4748 percent_hack_domains. A loop is required, to copy with multiple %-hacks. */
4750 if (percent_hack_domains)
4753 uschar *new_address = NULL;
4754 uschar *local_part = addr->cc_local_part;
4756 deliver_domain = addr->domain; /* set $domain */
4758 while ( (rc = match_isinlist(deliver_domain, (const uschar **)&percent_hack_domains, 0,
4759 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
4761 && (t = Ustrrchr(local_part, '%')) != NULL
4764 new_address = string_copy(local_part);
4765 new_address[t - local_part] = '@';
4766 deliver_domain = string_copylc(t+1);
4767 local_part = string_copyn(local_part, t - local_part);
4770 if (rc == DEFER) return DEFER; /* lookup deferred */
4772 /* If hackery happened, set up new parent and alter the current address. */
4776 address_item *new_parent = store_get(sizeof(address_item));
4777 *new_parent = *addr;
4778 addr->parent = new_parent;
4779 addr->address = new_address;
4780 addr->unique = string_copy(new_address);
4781 addr->domain = deliver_domain;
4782 addr->cc_local_part = local_part;
4783 DEBUG(D_deliver) debug_printf("%%-hack changed address to: %s\n",
4788 /* Create the lowercased version of the final local part, and make that the
4789 default one to be used. */
4791 addr->local_part = addr->lc_local_part = string_copylc(addr->cc_local_part);
4798 /*************************************************
4799 * Get next error message text *
4800 *************************************************/
4802 /* If f is not NULL, read the next "paragraph", from a customized error message
4803 text file, terminated by a line containing ****, and expand it.
4806 f NULL or a file to read from
4807 which string indicating which string (for errors)
4809 Returns: NULL or an expanded string
4813 next_emf(FILE *f, uschar *which)
4817 uschar *para, *yield;
4820 if (!f) return NULL;
4822 if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0)
4825 para = store_get(size);
4828 para = string_cat(para, &size, &ptr, buffer);
4829 if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0)
4834 if ((yield = expand_string(para)))
4837 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from "
4838 "bounce_message_file or warn_message_file (%s): %s", which,
4839 expand_string_message);
4846 /*************************************************
4847 * Close down a passed transport channel *
4848 *************************************************/
4850 /* This function is called when a passed transport channel cannot be used.
4851 It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED
4852 so that the function call can be the argument of a "return" statement.
4855 Returns: DELIVER_NOT_ATTEMPTED
4859 continue_closedown(void)
4861 if (continue_transport)
4863 transport_instance *t;
4864 for (t = transports; t; t = t->next)
4865 if (Ustrcmp(t->name, continue_transport) == 0)
4867 if (t->info->closedown) (t->info->closedown)(t);
4871 return DELIVER_NOT_ATTEMPTED;
4877 /*************************************************
4878 * Print address information *
4879 *************************************************/
4881 /* This function is called to output an address, or information about an
4882 address, for bounce or defer messages. If the hide_child flag is set, all we
4883 output is the original ancestor address.
4886 addr points to the address
4887 f the FILE to print to
4888 si an initial string
4889 sc a continuation string for before "generated"
4892 Returns: TRUE if the address is not hidden
4896 print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc,
4900 uschar *printed = US"";
4901 address_item *ancestor = addr;
4902 while (ancestor->parent) ancestor = ancestor->parent;
4904 fprintf(f, "%s", CS si);
4906 if (addr->parent && testflag(addr, af_hide_child))
4908 printed = US"an undisclosed address";
4911 else if (!testflag(addr, af_pfr) || !addr->parent)
4912 printed = addr->address;
4916 uschar *s = addr->address;
4919 if (addr->address[0] == '>') { ss = US"mail"; s++; }
4920 else if (addr->address[0] == '|') ss = US"pipe";
4923 fprintf(f, "%s to %s%sgenerated by ", ss, s, sc);
4924 printed = addr->parent->address;
4927 fprintf(f, "%s", CS string_printing(printed));
4929 if (ancestor != addr)
4931 uschar *original = ancestor->onetime_parent;
4932 if (!original) original= ancestor->address;
4933 if (strcmpic(original, printed) != 0)
4934 fprintf(f, "%s(%sgenerated from %s)", sc,
4935 ancestor != addr->parent ? "ultimately " : "",
4936 string_printing(original));
4939 if (addr->host_used)
4940 fprintf(f, "\n host %s [%s]",
4941 addr->host_used->name, addr->host_used->address);
4943 fprintf(f, "%s", CS se);
4951 /*************************************************
4952 * Print error for an address *
4953 *************************************************/
4955 /* This function is called to print the error information out of an address for
4956 a bounce or a warning message. It tries to format the message reasonably by
4957 introducing newlines. All lines are indented by 4; the initial printing
4958 position must be set before calling.
4960 This function used always to print the error. Nowadays we want to restrict it
4961 to cases such as LMTP/SMTP errors from a remote host, and errors from :fail:
4962 and filter "fail". We no longer pass other information willy-nilly in bounce
4963 and warning messages. Text in user_message is always output; text in message
4964 only if the af_pass_message flag is set.
4968 f the FILE to print on
4975 print_address_error(address_item *addr, FILE *f, uschar *t)
4977 int count = Ustrlen(t);
4978 uschar *s = testflag(addr, af_pass_message)? addr->message : NULL;
4980 if (!s && !(s = addr->user_message))
4983 fprintf(f, "\n %s", t);
4986 if (*s == '\\' && s[1] == 'n')
4996 if (*s++ == ':' && isspace(*s) && count > 45)
4998 fprintf(f, "\n "); /* sic (because space follows) */
5005 /***********************************************************
5006 * Print Diagnostic-Code for an address *
5007 ************************************************************/
5009 /* This function is called to print the error information out of an address for
5010 a bounce or a warning message. It tries to format the message reasonably as
5011 required by RFC 3461 by adding a space after each newline
5013 it uses the same logic as print_address_error() above. if af_pass_message is true
5014 and addr->message is set it uses the remote host answer. if not addr->user_message
5015 is used instead if available.
5019 f the FILE to print on
5025 print_dsn_diagnostic_code(const address_item *addr, FILE *f)
5027 uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL;
5029 /* af_pass_message and addr->message set ? print remote host answer */
5033 debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message);
5035 /* search first ": ". we assume to find the remote-MTA answer there */
5036 if (!(s = Ustrstr(addr->message, ": ")))
5037 return; /* not found, bail out */
5038 s += 2; /* skip ": " */
5039 fprintf(f, "Diagnostic-Code: smtp; ");
5041 /* no message available. do nothing */
5045 if (*s == '\\' && s[1] == 'n')
5047 fputs("\n ", f); /* as defined in RFC 3461 */
5057 /*************************************************
5058 * Check list of addresses for duplication *
5059 *************************************************/
5061 /* This function was introduced when the test for duplicate addresses that are
5062 not pipes, files, or autoreplies was moved from the middle of routing to when
5063 routing was complete. That was to fix obscure cases when the routing history
5064 affects the subsequent routing of identical addresses. This function is called
5065 after routing, to check that the final routed addresses are not duplicates.
5067 If we detect a duplicate, we remember what it is a duplicate of. Note that
5068 pipe, file, and autoreply de-duplication is handled during routing, so we must
5069 leave such "addresses" alone here, as otherwise they will incorrectly be
5072 Argument: address of list anchor
5077 do_duplicate_check(address_item **anchor)
5080 while ((addr = *anchor))
5083 if (testflag(addr, af_pfr))
5085 anchor = &(addr->next);
5087 else if ((tnode = tree_search(tree_duplicates, addr->unique)))
5089 DEBUG(D_deliver|D_route)
5090 debug_printf("%s is a duplicate address: discarded\n", addr->unique);
5091 *anchor = addr->next;
5092 addr->dupof = tnode->data.ptr;
5093 addr->next = addr_duplicate;
5094 addr_duplicate = addr;
5098 tree_add_duplicate(addr->unique, addr);
5099 anchor = &(addr->next);
5107 /*************************************************
5108 * Deliver one message *
5109 *************************************************/
5111 /* This is the function which is called when a message is to be delivered. It
5112 is passed the id of the message. It is possible that the message no longer
5113 exists, if some other process has delivered it, and it is also possible that
5114 the message is being worked on by another process, in which case the data file
5117 If no delivery is attempted for any of the above reasons, the function returns
5118 DELIVER_NOT_ATTEMPTED.
5120 If the give_up flag is set true, do not attempt any deliveries, but instead
5121 fail all outstanding addresses and return the message to the sender (or
5124 A delivery operation has a process all to itself; we never deliver more than
5125 one message in the same process. Therefore we needn't worry too much about
5129 id the id of the message to be delivered
5130 forced TRUE if delivery was forced by an administrator; this overrides
5131 retry delays and causes a delivery to be tried regardless
5132 give_up TRUE if an administrator has requested that delivery attempts
5135 Returns: When the global variable mua_wrapper is FALSE:
5136 DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made
5137 DELIVER_NOT_ATTEMPTED otherwise (see comment above)
5138 When the global variable mua_wrapper is TRUE:
5139 DELIVER_MUA_SUCCEEDED if delivery succeeded
5140 DELIVER_MUA_FAILED if delivery failed
5141 DELIVER_NOT_ATTEMPTED if not attempted (should not occur)
5145 deliver_message(uschar *id, BOOL forced, BOOL give_up)
5148 int final_yield = DELIVER_ATTEMPTED_NORMAL;
5149 time_t now = time(NULL);
5150 address_item *addr_last = NULL;
5151 uschar *filter_message = NULL;
5153 int process_recipients = RECIP_ACCEPT;
5156 extern int acl_where;
5158 uschar *info = queue_run_pid == (pid_t)0
5159 ? string_sprintf("delivering %s", id)
5160 : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid);
5162 /* If the D_process_info bit is on, set_process_info() will output debugging
5163 information. If not, we want to show this initial information if D_deliver or
5164 D_queue_run is set or in verbose mode. */
5166 set_process_info("%s", info);
5168 if ( !(debug_selector & D_process_info)
5169 && (debug_selector & (D_deliver|D_queue_run|D_v))
5171 debug_printf("%s\n", info);
5173 /* Ensure that we catch any subprocesses that are created. Although Exim
5174 sets SIG_DFL as its initial default, some routes through the code end up
5175 here with it set to SIG_IGN - cases where a non-synchronous delivery process
5176 has been forked, but no re-exec has been done. We use sigaction rather than
5177 plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be
5178 sure it is turned off. (There was a problem on AIX with this.) */
5182 struct sigaction act;
5183 act.sa_handler = SIG_DFL;
5184 sigemptyset(&(act.sa_mask));
5186 sigaction(SIGCHLD, &act, NULL);
5189 signal(SIGCHLD, SIG_DFL);
5192 /* Make the forcing flag available for routers and transports, set up the
5193 global message id field, and initialize the count for returned files and the
5194 message size. This use of strcpy() is OK because the length id is checked when
5195 it is obtained from a command line (the -M or -q options), and otherwise it is
5196 known to be a valid message id. */
5198 Ustrcpy(message_id, id);
5199 deliver_force = forced;
5203 /* Initialize some flags */
5205 update_spool = FALSE;
5206 remove_journal = TRUE;
5208 /* Set a known context for any ACLs we call via expansions */
5209 acl_where = ACL_WHERE_DELIVERY;
5211 /* Reset the random number generator, so that if several delivery processes are
5212 started from a queue runner that has already used random numbers (for sorting),
5213 they don't all get the same sequence. */
5217 /* Open and lock the message's data file. Exim locks on this one because the
5218 header file may get replaced as it is re-written during the delivery process.
5219 Any failures cause messages to be written to the log, except for missing files
5220 while queue running - another process probably completed delivery. As part of
5221 opening the data file, message_subdir gets set. */
5223 if ((deliver_datafile = spool_open_datafile(id)) < 0)
5224 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5226 /* The value of message_size at this point has been set to the data length,
5227 plus one for the blank line that notionally precedes the data. */
5229 /* Now read the contents of the header file, which will set up the headers in
5230 store, and also the list of recipients and the tree of non-recipients and
5231 assorted flags. It updates message_size. If there is a reading or format error,
5232 give up; if the message has been around for sufficiently long, remove it. */
5234 sprintf(CS spoolname, "%s-H", id);
5235 if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK)
5237 if (errno == ERRNO_SPOOLFORMAT)
5239 struct stat statbuf;
5240 sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir,
5242 if (Ustat(big_buffer, &statbuf) == 0)
5243 log_write(0, LOG_MAIN, "Format error in spool file %s: "
5244 "size=" OFF_T_FMT, spoolname, statbuf.st_size);
5245 else log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname);
5248 log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname,
5251 /* If we managed to read the envelope data, received_time contains the
5252 time the message was received. Otherwise, we can calculate it from the
5255 if (rc != spool_read_hdrerror)
5258 for (i = 0; i < 6; i++)
5259 received_time = received_time * BASE_62 + tab62[id[i] - '0'];
5262 /* If we've had this malformed message too long, sling it. */
5264 if (now - received_time > keep_malformed)
5266 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir, id);
5268 sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id);
5270 sprintf(CS spoolname, "%s/input/%s/%s-H", spool_directory, message_subdir, id);
5272 sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
5274 log_write(0, LOG_MAIN, "Message removed because older than %s",
5275 readconf_printtime(keep_malformed));
5278 (void)close(deliver_datafile);
5279 deliver_datafile = -1;
5280 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5283 /* The spool header file has been read. Look to see if there is an existing
5284 journal file for this message. If there is, it means that a previous delivery
5285 attempt crashed (program or host) before it could update the spool header file.
5286 Read the list of delivered addresses from the journal and add them to the
5287 nonrecipients tree. Then update the spool file. We can leave the journal in
5288 existence, as it will get further successful deliveries added to it in this
5289 run, and it will be deleted if this function gets to its end successfully.
5290 Otherwise it might be needed again. */
5292 sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
5293 jread = Ufopen(spoolname, "rb");
5296 while (Ufgets(big_buffer, big_buffer_size, jread))
5298 int n = Ustrlen(big_buffer);
5299 big_buffer[n-1] = 0;
5300 tree_add_nonrecipient(big_buffer);
5301 DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from "
5302 "journal file\n", big_buffer);
5304 (void)fclose(jread);
5305 /* Panic-dies on error */
5306 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
5308 else if (errno != ENOENT)
5310 log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: "
5311 "%s", strerror(errno));
5312 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5315 /* A null recipients list indicates some kind of disaster. */
5317 if (!recipients_list)
5319 (void)close(deliver_datafile);
5320 deliver_datafile = -1;
5321 log_write(0, LOG_MAIN, "Spool error: no recipients for %s", spoolname);
5322 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5326 /* Handle a message that is frozen. There are a number of different things that
5327 can happen, but in the default situation, unless forced, no delivery is
5332 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
5333 /* Moving to another directory removes the message from Exim's view. Other
5334 tools must be used to deal with it. Logging of this action happens in
5335 spool_move_message() and its subfunctions. */
5337 if ( move_frozen_messages
5338 && spool_move_message(id, message_subdir, US"", US"F")
5340 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5343 /* For all frozen messages (bounces or not), timeout_frozen_after sets the
5344 maximum time to keep messages that are frozen. Thaw if we reach it, with a
5345 flag causing all recipients to be failed. The time is the age of the
5346 message, not the time since freezing. */
5348 if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after)
5350 log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after");
5351 process_recipients = RECIP_FAIL_TIMEOUT;
5354 /* For bounce messages (and others with no sender), thaw if the error message
5355 ignore timer is exceeded. The message will be discarded if this delivery
5358 else if (sender_address[0] == 0 && message_age >= ignore_bounce_errors_after)
5360 log_write(0, LOG_MAIN, "Unfrozen by errmsg timer");
5363 /* If this is a bounce message, or there's no auto thaw, or we haven't
5364 reached the auto thaw time yet, and this delivery is not forced by an admin
5365 user, do not attempt delivery of this message. Note that forced is set for
5366 continuing messages down the same channel, in order to skip load checking and
5367 ignore hold domains, but we don't want unfreezing in that case. */
5371 if ( ( sender_address[0] == 0
5373 || now <= deliver_frozen_at + auto_thaw
5375 && ( !forced || !deliver_force_thaw
5376 || !admin_user || continue_hostname
5379 (void)close(deliver_datafile);
5380 deliver_datafile = -1;
5381 log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
5382 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5385 /* If delivery was forced (by an admin user), assume a manual thaw.
5386 Otherwise it's an auto thaw. */
5390 deliver_manual_thaw = TRUE;
5391 log_write(0, LOG_MAIN, "Unfrozen by forced delivery");
5393 else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw");
5396 /* We get here if any of the rules for unfreezing have triggered. */
5398 deliver_freeze = FALSE;
5399 update_spool = TRUE;
5403 /* Open the message log file if we are using them. This records details of
5404 deliveries, deferments, and failures for the benefit of the mail administrator.
5405 The log is not used by exim itself to track the progress of a message; that is
5406 done by rewriting the header spool file. */
5413 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir, id);
5414 fd = open_msglog_file(spoolname, SPOOL_MODE, &error);
5418 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error,
5419 spoolname, strerror(errno));
5420 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5423 /* Make a C stream out of it. */
5425 if (!(message_log = fdopen(fd, "a")))
5427 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s",
5428 spoolname, strerror(errno));
5429 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5434 /* If asked to give up on a message, log who did it, and set the action for all
5439 struct passwd *pw = getpwuid(real_uid);
5440 log_write(0, LOG_MAIN, "cancelled by %s",
5441 pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid));
5442 process_recipients = RECIP_FAIL;
5445 /* Otherwise, if there are too many Received: headers, fail all recipients. */
5447 else if (received_count > received_headers_max)
5448 process_recipients = RECIP_FAIL_LOOP;
5450 /* Otherwise, if a system-wide, address-independent message filter is
5451 specified, run it now, except in the case when we are failing all recipients as
5452 a result of timeout_frozen_after. If the system filter yields "delivered", then
5453 ignore the true recipients of the message. Failure of the filter file is
5454 logged, and the delivery attempt fails. */
5456 else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT)
5461 redirect_block redirect;
5463 if (system_filter_uid_set)
5465 ugid.uid = system_filter_uid;
5466 ugid.gid = system_filter_gid;
5467 ugid.uid_set = ugid.gid_set = TRUE;
5471 ugid.uid_set = ugid.gid_set = FALSE;
5474 return_path = sender_address;
5475 enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */
5476 system_filtering = TRUE;
5478 /* Any error in the filter file causes a delivery to be abandoned. */
5480 redirect.string = system_filter;
5481 redirect.isfile = TRUE;
5482 redirect.check_owner = redirect.check_group = FALSE;
5483 redirect.owners = NULL;
5484 redirect.owngroups = NULL;
5486 redirect.modemask = 0;
5488 DEBUG(D_deliver|D_filter) debug_printf("running system filter\n");
5491 &redirect, /* Where the data is */
5492 RDO_DEFER | /* Turn on all the enabling options */
5493 RDO_FAIL | /* Leave off all the disabling options */
5498 NULL, /* No :include: restriction (not used in filter) */
5499 NULL, /* No sieve vacation directory (not sieve!) */
5500 NULL, /* No sieve enotify mailto owner (not sieve!) */
5501 NULL, /* No sieve user address (not sieve!) */
5502 NULL, /* No sieve subaddress (not sieve!) */
5503 &ugid, /* uid/gid data */
5504 &addr_new, /* Where to hang generated addresses */
5505 &filter_message, /* Where to put error message */
5506 NULL, /* Don't skip syntax errors */
5507 &filtertype, /* Will always be set to FILTER_EXIM for this call */
5508 US"system filter"); /* For error messages */
5510 DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc);
5512 if (rc == FF_ERROR || rc == FF_NONEXIST)
5514 (void)close(deliver_datafile);
5515 deliver_datafile = -1;
5516 log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s",
5517 string_printing(filter_message));
5518 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5521 /* Reset things. If the filter message is an empty string, which can happen
5522 for a filter "fail" or "freeze" command with no text, reset it to NULL. */
5524 system_filtering = FALSE;
5525 enable_dollar_recipients = FALSE;
5526 if (filter_message && filter_message[0] == 0) filter_message = NULL;
5528 /* Save the values of the system filter variables so that user filters
5531 memcpy(filter_sn, filter_n, sizeof(filter_sn));
5533 /* The filter can request that delivery of the original addresses be
5538 process_recipients = RECIP_DEFER;
5539 deliver_msglog("Delivery deferred by system filter\n");
5540 log_write(0, LOG_MAIN, "Delivery deferred by system filter");
5543 /* The filter can request that a message be frozen, but this does not
5544 take place if the message has been manually thawed. In that case, we must
5545 unset "delivered", which is forced by the "freeze" command to make -bF
5548 else if (rc == FF_FREEZE && !deliver_manual_thaw)
5550 deliver_freeze = TRUE;
5551 deliver_frozen_at = time(NULL);
5552 process_recipients = RECIP_DEFER;
5553 frozen_info = string_sprintf(" by the system filter%s%s",
5554 filter_message ? US": " : US"",
5555 filter_message ? filter_message : US"");
5558 /* The filter can request that a message be failed. The error message may be
5559 quite long - it is sent back to the sender in the bounce - but we don't want
5560 to fill up the log with repetitions of it. If it starts with << then the text
5561 between << and >> is written to the log, with the rest left for the bounce
5564 else if (rc == FF_FAIL)
5566 uschar *colon = US"";
5567 uschar *logmsg = US"";
5570 process_recipients = RECIP_FAIL_FILTER;
5576 if ( filter_message[0] == '<'
5577 && filter_message[1] == '<'
5578 && (logend = Ustrstr(filter_message, ">>"))
5581 logmsg = filter_message + 2;
5582 loglen = logend - logmsg;
5583 filter_message = logend + 2;
5584 if (filter_message[0] == 0) filter_message = NULL;
5588 logmsg = filter_message;
5589 loglen = Ustrlen(filter_message);
5593 log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen,
5597 /* Delivery can be restricted only to those recipients (if any) that the
5598 filter specified. */
5600 else if (rc == FF_DELIVERED)
5602 process_recipients = RECIP_IGNORE;
5604 log_write(0, LOG_MAIN, "original recipients ignored (system filter)");
5606 log_write(0, LOG_MAIN, "=> discarded (system filter)");
5609 /* If any new addresses were created by the filter, fake up a "parent"
5610 for them. This is necessary for pipes, etc., which are expected to have
5611 parents, and it also gives some sensible logging for others. Allow
5612 pipes, files, and autoreplies, and run them as the filter uid if set,
5613 otherwise as the current uid. */
5617 int uid = (system_filter_uid_set)? system_filter_uid : geteuid();
5618 int gid = (system_filter_gid_set)? system_filter_gid : getegid();
5620 /* The text "system-filter" is tested in transport_set_up_command() and in
5621 set_up_shell_command() in the pipe transport, to enable them to permit
5622 $recipients, so don't change it here without also changing it there. */
5624 address_item *p = addr_new;
5625 address_item *parent = deliver_make_addr(US"system-filter", FALSE);
5627 parent->domain = string_copylc(qualify_domain_recipient);
5628 parent->local_part = US"system-filter";
5630 /* As part of this loop, we arrange for addr_last to end up pointing
5631 at the final address. This is used if we go on to add addresses for the
5632 original recipients. */
5636 if (parent->child_count == SHRT_MAX)
5637 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more "
5638 "than %d delivery addresses", SHRT_MAX);
5639 parent->child_count++;
5642 if (testflag(p, af_pfr))
5648 setflag(p, af_uid_set |
5654 /* Find the name of the system filter's appropriate pfr transport */
5656 if (p->address[0] == '|')
5659 tpname = system_filter_pipe_transport;
5660 address_pipe = p->address;
5662 else if (p->address[0] == '>')
5665 tpname = system_filter_reply_transport;
5669 if (p->address[Ustrlen(p->address)-1] == '/')
5671 type = US"directory";
5672 tpname = system_filter_directory_transport;
5677 tpname = system_filter_file_transport;
5679 address_file = p->address;
5682 /* Now find the actual transport, first expanding the name. We have
5683 set address_file or address_pipe above. */
5687 uschar *tmp = expand_string(tpname);
5688 address_file = address_pipe = NULL;
5690 p->message = string_sprintf("failed to expand \"%s\" as a "
5691 "system filter transport name", tpname);
5696 p->message = string_sprintf("system_filter_%s_transport is unset",
5702 transport_instance *tp;
5703 for (tp = transports; tp; tp = tp->next)
5705 if (Ustrcmp(tp->name, tpname) == 0)
5712 p->message = string_sprintf("failed to find \"%s\" transport "
5713 "for system filter delivery", tpname);
5716 /* If we couldn't set up a transport, defer the delivery, putting the
5717 error on the panic log as well as the main log. */
5721 address_item *badp = p;
5723 if (!addr_last) addr_new = p; else addr_last->next = p;
5724 badp->local_part = badp->address; /* Needed for log line */
5725 post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, DTYPE_ROUTER, 0);
5728 } /* End of pfr handling */
5730 /* Either a non-pfr delivery, or we found a transport */
5732 DEBUG(D_deliver|D_filter)
5733 debug_printf("system filter added %s\n", p->address);
5737 } /* Loop through all addr_new addresses */
5742 /* Scan the recipients list, and for every one that is not in the non-
5743 recipients tree, add an addr item to the chain of new addresses. If the pno
5744 value is non-negative, we must set the onetime parent from it. This which
5745 points to the relevant entry in the recipients list.
5747 This processing can be altered by the setting of the process_recipients
5748 variable, which is changed if recipients are to be ignored, failed, or
5749 deferred. This can happen as a result of system filter activity, or if the -Mg
5750 option is used to fail all of them.
5752 Duplicate addresses are handled later by a different tree structure; we can't
5753 just extend the non-recipients tree, because that will be re-written to the
5754 spool if the message is deferred, and in any case there are casing
5755 complications for local addresses. */
5757 if (process_recipients != RECIP_IGNORE)
5759 for (i = 0; i < recipients_count; i++)
5761 if (!tree_search(tree_nonrecipients, recipients_list[i].address))
5763 recipient_item *r = recipients_list + i;
5764 address_item *new = deliver_make_addr(r->address, FALSE);
5765 new->prop.errors_address = r->errors_to;
5767 if ((new->prop.utf8_msg = message_smtputf8))
5769 new->prop.utf8_downcvt = message_utf8_downconvert == 1;
5770 new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1;
5771 DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n",
5772 new->prop.utf8_downcvt ? "yes"
5773 : new->prop.utf8_downcvt_maybe ? "ifneeded"
5779 new->onetime_parent = recipients_list[r->pno].address;
5781 /* If DSN support is enabled, set the dsn flags and the original receipt
5782 to be passed on to other DSN enabled MTAs */
5783 new->dsn_flags = r->dsn_flags & rf_dsnflags;
5784 new->dsn_orcpt = r->orcpt;
5785 DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n",
5786 new->dsn_orcpt, new->dsn_flags);
5788 switch (process_recipients)
5790 /* RECIP_DEFER is set when a system filter freezes a message. */
5793 new->next = addr_defer;
5798 /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
5801 case RECIP_FAIL_FILTER:
5803 filter_message ? filter_message : US"delivery cancelled";
5804 setflag(new, af_pass_message);
5805 goto RECIP_QUEUE_FAILED; /* below */
5808 /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older
5809 than the value in timeout_frozen_after. Treat non-bounce messages
5810 similarly to -Mg; for bounce messages we just want to discard, so
5811 don't put the address on the failed list. The timeout has already
5814 case RECIP_FAIL_TIMEOUT:
5815 new->message = US"delivery cancelled; message timed out";
5816 goto RECIP_QUEUE_FAILED; /* below */
5819 /* RECIP_FAIL is set when -Mg has been used. */
5822 new->message = US"delivery cancelled by administrator";
5825 /* Common code for the failure cases above. If this is not a bounce
5826 message, put the address on the failed list so that it is used to
5827 create a bounce. Otherwise do nothing - this just discards the address.
5828 The incident has already been logged. */
5831 if (sender_address[0] != 0)
5833 new->next = addr_failed;
5839 /* RECIP_FAIL_LOOP is set when there are too many Received: headers
5840 in the message. Process each address as a routing failure; if this
5841 is a bounce message, it will get frozen. */
5843 case RECIP_FAIL_LOOP:
5844 new->message = US"Too many \"Received\" headers - suspected mail loop";
5845 post_process_one(new, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
5849 /* Value should be RECIP_ACCEPT; take this as the safe default. */
5852 if (!addr_new) addr_new = new; else addr_last->next = new;
5857 #ifndef DISABLE_EVENT
5858 if (process_recipients != RECIP_ACCEPT)
5860 uschar * save_local = deliver_localpart;
5861 const uschar * save_domain = deliver_domain;
5863 deliver_localpart = expand_string(
5864 string_sprintf("${local_part:%s}", new->address));
5865 deliver_domain = expand_string(
5866 string_sprintf("${domain:%s}", new->address));
5868 (void) event_raise(event_action,
5869 US"msg:fail:internal", new->message);
5871 deliver_localpart = save_local;
5872 deliver_domain = save_domain;
5882 debug_printf("Delivery address list:\n");
5883 for (p = addr_new; p; p = p->next)
5884 debug_printf(" %s %s\n", p->address,
5885 p->onetime_parent ? p->onetime_parent : US"");
5888 /* Set up the buffers used for copying over the file when delivering. */
5890 deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
5891 deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
5895 /* Until there are no more new addresses, handle each one as follows:
5897 . If this is a generated address (indicated by the presence of a parent
5898 pointer) then check to see whether it is a pipe, file, or autoreply, and
5899 if so, handle it directly here. The router that produced the address will
5900 have set the allow flags into the address, and also set the uid/gid required.
5901 Having the routers generate new addresses and then checking them here at
5902 the outer level is tidier than making each router do the checking, and
5903 means that routers don't need access to the failed address queue.
5905 . Break up the address into local part and domain, and make lowercased
5906 versions of these strings. We also make unquoted versions of the local part.
5908 . Handle the percent hack for those domains for which it is valid.
5910 . For child addresses, determine if any of the parents have the same address.
5911 If so, generate a different string for previous delivery checking. Without
5912 this code, if the address spqr generates spqr via a forward or alias file,
5913 delivery of the generated spqr stops further attempts at the top level spqr,
5914 which is not what is wanted - it may have generated other addresses.
5916 . Check on the retry database to see if routing was previously deferred, but
5917 only if in a queue run. Addresses that are to be routed are put on the
5918 addr_route chain. Addresses that are to be deferred are put on the
5919 addr_defer chain. We do all the checking first, so as not to keep the
5920 retry database open any longer than necessary.
5922 . Now we run the addresses through the routers. A router may put the address
5923 on either the addr_local or the addr_remote chain for local or remote
5924 delivery, respectively, or put it on the addr_failed chain if it is
5925 undeliveable, or it may generate child addresses and put them on the
5926 addr_new chain, or it may defer an address. All the chain anchors are
5927 passed as arguments so that the routers can be called for verification
5930 . If new addresses have been generated by the routers, da capo.
5933 header_rewritten = FALSE; /* No headers rewritten yet */
5934 while (addr_new) /* Loop until all addresses dealt with */
5936 address_item *addr, *parent;
5938 /* Failure to open the retry database is treated the same as if it does
5939 not exist. In both cases, dbm_file is NULL. */
5941 if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE)))
5943 DEBUG(D_deliver|D_retry|D_route|D_hints_lookup)
5944 debug_printf("no retry data available\n");
5947 /* Scan the current batch of new addresses, to handle pipes, files and
5948 autoreplies, and determine which others are ready for routing. */
5955 dbdata_retry *domain_retry_record;
5956 dbdata_retry *address_retry_record;
5959 addr_new = addr->next;
5961 DEBUG(D_deliver|D_retry|D_route)
5963 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
5964 debug_printf("Considering: %s\n", addr->address);
5967 /* Handle generated address that is a pipe or a file or an autoreply. */
5969 if (testflag(addr, af_pfr))
5971 /* If an autoreply in a filter could not generate a syntactically valid
5972 address, give up forthwith. Set af_ignore_error so that we don't try to
5973 generate a bounce. */
5975 if (testflag(addr, af_bad_reply))
5977 addr->basic_errno = ERRNO_BADADDRESS2;
5978 addr->local_part = addr->address;
5980 US"filter autoreply generated syntactically invalid recipient";
5981 setflag(addr, af_ignore_error);
5982 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
5983 continue; /* with the next new address */
5986 /* If two different users specify delivery to the same pipe or file or
5987 autoreply, there should be two different deliveries, so build a unique
5988 string that incorporates the original address, and use this for
5989 duplicate testing and recording delivery, and also for retrying. */
5992 string_sprintf("%s:%s", addr->address, addr->parent->unique +
5993 (testflag(addr->parent, af_homonym)? 3:0));
5995 addr->address_retry_key = addr->domain_retry_key =
5996 string_sprintf("T:%s", addr->unique);
5998 /* If a filter file specifies two deliveries to the same pipe or file,
5999 we want to de-duplicate, but this is probably not wanted for two mail
6000 commands to the same address, where probably both should be delivered.
6001 So, we have to invent a different unique string in that case. Just
6002 keep piling '>' characters on the front. */
6004 if (addr->address[0] == '>')
6006 while (tree_search(tree_duplicates, addr->unique))
6007 addr->unique = string_sprintf(">%s", addr->unique);
6010 else if ((tnode = tree_search(tree_duplicates, addr->unique)))
6012 DEBUG(D_deliver|D_route)
6013 debug_printf("%s is a duplicate address: discarded\n", addr->address);
6014 addr->dupof = tnode->data.ptr;
6015 addr->next = addr_duplicate;
6016 addr_duplicate = addr;
6020 DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
6022 /* Check for previous delivery */
6024 if (tree_search(tree_nonrecipients, addr->unique))
6026 DEBUG(D_deliver|D_route)
6027 debug_printf("%s was previously delivered: discarded\n", addr->address);
6028 child_done(addr, tod_stamp(tod_log));
6032 /* Save for checking future duplicates */
6034 tree_add_duplicate(addr->unique, addr);
6036 /* Set local part and domain */
6038 addr->local_part = addr->address;
6039 addr->domain = addr->parent->domain;
6041 /* Ensure that the delivery is permitted. */
6043 if (testflag(addr, af_file))
6045 if (!testflag(addr, af_allow_file))
6047 addr->basic_errno = ERRNO_FORBIDFILE;
6048 addr->message = US"delivery to file forbidden";
6049 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6050 continue; /* with the next new address */
6053 else if (addr->address[0] == '|')
6055 if (!testflag(addr, af_allow_pipe))
6057 addr->basic_errno = ERRNO_FORBIDPIPE;
6058 addr->message = US"delivery to pipe forbidden";
6059 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6060 continue; /* with the next new address */
6063 else if (!testflag(addr, af_allow_reply))
6065 addr->basic_errno = ERRNO_FORBIDREPLY;
6066 addr->message = US"autoreply forbidden";
6067 (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
6068 continue; /* with the next new address */
6071 /* If the errno field is already set to BADTRANSPORT, it indicates
6072 failure to expand a transport string, or find the associated transport,
6073 or an unset transport when one is required. Leave this test till now so
6074 that the forbid errors are given in preference. */
6076 if (addr->basic_errno == ERRNO_BADTRANSPORT)
6078 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6082 /* Treat /dev/null as a special case and abandon the delivery. This
6083 avoids having to specify a uid on the transport just for this case.
6084 Arrange for the transport name to be logged as "**bypassed**". */
6086 if (Ustrcmp(addr->address, "/dev/null") == 0)
6088 uschar *save = addr->transport->name;
6089 addr->transport->name = US"**bypassed**";
6090 (void)post_process_one(addr, OK, LOG_MAIN, DTYPE_TRANSPORT, '=');
6091 addr->transport->name = save;
6092 continue; /* with the next new address */
6095 /* Pipe, file, or autoreply delivery is to go ahead as a normal local
6098 DEBUG(D_deliver|D_route)
6099 debug_printf("queued for %s transport\n", addr->transport->name);
6100 addr->next = addr_local;
6102 continue; /* with the next new address */
6105 /* Handle normal addresses. First, split up into local part and domain,
6106 handling the %-hack if necessary. There is the possibility of a defer from
6107 a lookup in percent_hack_domains. */
6109 if ((rc = deliver_split_address(addr)) == DEFER)
6111 addr->message = US"cannot check percent_hack_domains";
6112 addr->basic_errno = ERRNO_LISTDEFER;
6113 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
6117 /* Check to see if the domain is held. If so, proceed only if the
6118 delivery was forced by hand. */
6120 deliver_domain = addr->domain; /* set $domain */
6121 if ( !forced && hold_domains
6122 && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0,
6123 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE,
6129 addr->message = US"hold_domains lookup deferred";
6130 addr->basic_errno = ERRNO_LISTDEFER;
6134 addr->message = US"domain is held";
6135 addr->basic_errno = ERRNO_HELD;
6137 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
6141 /* Now we can check for duplicates and previously delivered addresses. In
6142 order to do this, we have to generate a "unique" value for each address,
6143 because there may be identical actual addresses in a line of descendents.
6144 The "unique" field is initialized to the same value as the "address" field,
6145 but gets changed here to cope with identically-named descendents. */
6147 for (parent = addr->parent; parent; parent = parent->parent)
6148 if (strcmpic(addr->address, parent->address) == 0) break;
6150 /* If there's an ancestor with the same name, set the homonym flag. This
6151 influences how deliveries are recorded. Then add a prefix on the front of
6152 the unique address. We use \n\ where n starts at 0 and increases each time.
6153 It is unlikely to pass 9, but if it does, it may look odd but will still
6154 work. This means that siblings or cousins with the same names are treated
6155 as duplicates, which is what we want. */
6159 setflag(addr, af_homonym);
6160 if (parent->unique[0] != '\\')
6161 addr->unique = string_sprintf("\\0\\%s", addr->address);
6163 addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1,
6167 /* Ensure that the domain in the unique field is lower cased, because
6168 domains are always handled caselessly. */
6170 p = Ustrrchr(addr->unique, '@');
6171 while (*p != 0) { *p = tolower(*p); p++; }
6173 DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
6175 if (tree_search(tree_nonrecipients, addr->unique))
6177 DEBUG(D_deliver|D_route)
6178 debug_printf("%s was previously delivered: discarded\n", addr->unique);
6179 child_done(addr, tod_stamp(tod_log));
6183 /* Get the routing retry status, saving the two retry keys (with and
6184 without the local part) for subsequent use. If there is no retry record for
6185 the standard address routing retry key, we look for the same key with the
6186 sender attached, because this form is used by the smtp transport after a
6187 4xx response to RCPT when address_retry_include_sender is true. */
6189 addr->domain_retry_key = string_sprintf("R:%s", addr->domain);
6190 addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part,
6195 domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key);
6196 if ( domain_retry_record
6197 && now - domain_retry_record->time_stamp > retry_data_expire
6199 domain_retry_record = NULL; /* Ignore if too old */
6201 address_retry_record = dbfn_read(dbm_file, addr->address_retry_key);
6202 if ( address_retry_record
6203 && now - address_retry_record->time_stamp > retry_data_expire
6205 address_retry_record = NULL; /* Ignore if too old */
6207 if (!address_retry_record)
6209 uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
6211 address_retry_record = dbfn_read(dbm_file, altkey);
6212 if ( address_retry_record
6213 && now - address_retry_record->time_stamp > retry_data_expire)
6214 address_retry_record = NULL; /* Ignore if too old */
6218 domain_retry_record = address_retry_record = NULL;
6220 DEBUG(D_deliver|D_retry)
6222 if (!domain_retry_record)
6223 debug_printf("no domain retry record\n");
6224 if (!address_retry_record)
6225 debug_printf("no address retry record\n");
6228 /* If we are sending a message down an existing SMTP connection, we must
6229 assume that the message which created the connection managed to route
6230 an address to that connection. We do not want to run the risk of taking
6231 a long time over routing here, because if we do, the server at the other
6232 end of the connection may time it out. This is especially true for messages
6233 with lots of addresses. For this kind of delivery, queue_running is not
6234 set, so we would normally route all addresses. We take a pragmatic approach
6235 and defer routing any addresses that have any kind of domain retry record.
6236 That is, we don't even look at their retry times. It doesn't matter if this
6237 doesn't work occasionally. This is all just an optimization, after all.
6239 The reason for not doing the same for address retries is that they normally
6240 arise from 4xx responses, not DNS timeouts. */
6242 if (continue_hostname && domain_retry_record)
6244 addr->message = US"reusing SMTP connection skips previous routing defer";
6245 addr->basic_errno = ERRNO_RRETRY;
6246 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6249 /* If we are in a queue run, defer routing unless there is no retry data or
6250 we've passed the next retry time, or this message is forced. In other
6251 words, ignore retry data when not in a queue run.
6253 However, if the domain retry time has expired, always allow the routing
6254 attempt. If it fails again, the address will be failed. This ensures that
6255 each address is routed at least once, even after long-term routing
6258 If there is an address retry, check that too; just wait for the next
6259 retry time. This helps with the case when the temporary error on the
6260 address was really message-specific rather than address specific, since
6261 it allows other messages through.
6263 We also wait for the next retry time if this is a message sent down an
6264 existing SMTP connection (even though that will be forced). Otherwise there
6265 will be far too many attempts for an address that gets a 4xx error. In
6266 fact, after such an error, we should not get here because, the host should
6267 not be remembered as one this message needs. However, there was a bug that
6268 used to cause this to happen, so it is best to be on the safe side.
6270 Even if we haven't reached the retry time in the hints, there is one more
6271 check to do, which is for the ultimate address timeout. We only do this
6272 check if there is an address retry record and there is not a domain retry
6273 record; this implies that previous attempts to handle the address had the
6274 retry_use_local_parts option turned on. We use this as an approximation
6275 for the destination being like a local delivery, for example delivery over
6276 LMTP to an IMAP message store. In this situation users are liable to bump
6277 into their quota and thereby have intermittently successful deliveries,
6278 which keep the retry record fresh, which can lead to us perpetually
6279 deferring messages. */
6281 else if ( ( queue_running && !deliver_force
6282 || continue_hostname
6284 && ( ( domain_retry_record
6285 && now < domain_retry_record->next_try
6286 && !domain_retry_record->expired
6288 || ( address_retry_record
6289 && now < address_retry_record->next_try
6291 && ( domain_retry_record
6292 || !address_retry_record
6293 || !retry_ultimate_address_timeout(addr->address_retry_key,
6294 addr->domain, address_retry_record, now)
6297 addr->message = US"retry time not reached";
6298 addr->basic_errno = ERRNO_RRETRY;
6299 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6302 /* The domain is OK for routing. Remember if retry data exists so it
6303 can be cleaned up after a successful delivery. */
6307 if (domain_retry_record || address_retry_record)
6308 setflag(addr, af_dr_retry_exists);
6309 addr->next = addr_route;
6311 DEBUG(D_deliver|D_route)
6312 debug_printf("%s: queued for routing\n", addr->address);
6316 /* The database is closed while routing is actually happening. Requests to
6317 update it are put on a chain and all processed together at the end. */
6319 if (dbm_file) dbfn_close(dbm_file);
6321 /* If queue_domains is set, we don't even want to try routing addresses in
6322 those domains. During queue runs, queue_domains is forced to be unset.
6323 Optimize by skipping this pass through the addresses if nothing is set. */
6325 if (!deliver_force && queue_domains)
6327 address_item *okaddr = NULL;
6330 address_item *addr = addr_route;
6331 addr_route = addr->next;
6333 deliver_domain = addr->domain; /* set $domain */
6334 if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0,
6335 &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
6340 addr->basic_errno = ERRNO_LISTDEFER;
6341 addr->message = US"queue_domains lookup deferred";
6342 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6346 addr->next = okaddr;
6352 addr->basic_errno = ERRNO_QUEUE_DOMAIN;
6353 addr->message = US"domain is in queue_domains";
6354 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
6358 addr_route = okaddr;
6361 /* Now route those addresses that are not deferred. */
6366 address_item *addr = addr_route;
6367 const uschar *old_domain = addr->domain;
6368 uschar *old_unique = addr->unique;
6369 addr_route = addr->next;
6372 /* Just in case some router parameter refers to it. */
6374 if (!(return_path = addr->prop.errors_address))
6375 return_path = sender_address;
6377 /* If a router defers an address, add a retry item. Whether or not to
6378 use the local part in the key is a property of the router. */
6380 if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new,
6381 &addr_succeed, v_none)) == DEFER)
6382 retry_add_item(addr,
6383 addr->router->retry_use_local_part
6384 ? string_sprintf("R:%s@%s", addr->local_part, addr->domain)
6385 : string_sprintf("R:%s", addr->domain),
6388 /* Otherwise, if there is an existing retry record in the database, add
6389 retry items to delete both forms. We must also allow for the possibility
6390 of a routing retry that includes the sender address. Since the domain might
6391 have been rewritten (expanded to fully qualified) as a result of routing,
6392 ensure that the rewritten form is also deleted. */
6394 else if (testflag(addr, af_dr_retry_exists))
6396 uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
6398 retry_add_item(addr, altkey, rf_delete);
6399 retry_add_item(addr, addr->address_retry_key, rf_delete);
6400 retry_add_item(addr, addr->domain_retry_key, rf_delete);
6401 if (Ustrcmp(addr->domain, old_domain) != 0)
6402 retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete);
6405 /* DISCARD is given for :blackhole: and "seen finish". The event has been
6406 logged, but we need to ensure the address (and maybe parents) is marked
6411 address_done(addr, tod_stamp(tod_log));
6412 continue; /* route next address */
6415 /* The address is finished with (failed or deferred). */
6419 (void)post_process_one(addr, rc, LOG_MAIN, DTYPE_ROUTER, 0);
6420 continue; /* route next address */
6423 /* The address has been routed. If the router changed the domain, it will
6424 also have changed the unique address. We have to test whether this address
6425 has already been delivered, because it's the unique address that finally
6428 if ( addr->unique != old_unique
6429 && tree_search(tree_nonrecipients, addr->unique) != 0
6432 DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: "
6433 "discarded\n", addr->address);
6434 if (addr_remote == addr) addr_remote = addr->next;
6435 else if (addr_local == addr) addr_local = addr->next;
6438 /* If the router has same_domain_copy_routing set, we are permitted to copy
6439 the routing for any other addresses with the same domain. This is an
6440 optimisation to save repeated DNS lookups for "standard" remote domain
6441 routing. The option is settable only on routers that generate host lists.
6442 We play it very safe, and do the optimization only if the address is routed
6443 to a remote transport, there are no header changes, and the domain was not
6444 modified by the router. */
6446 if ( addr_remote == addr
6447 && addr->router->same_domain_copy_routing
6448 && !addr->prop.extra_headers
6449 && !addr->prop.remove_headers
6450 && old_domain == addr->domain
6453 address_item **chain = &addr_route;
6456 address_item *addr2 = *chain;
6457 if (Ustrcmp(addr2->domain, addr->domain) != 0)
6459 chain = &(addr2->next);
6463 /* Found a suitable address; take it off the routing list and add it to
6464 the remote delivery list. */
6466 *chain = addr2->next;
6467 addr2->next = addr_remote;
6468 addr_remote = addr2;
6470 /* Copy the routing data */
6472 addr2->domain = addr->domain;
6473 addr2->router = addr->router;
6474 addr2->transport = addr->transport;
6475 addr2->host_list = addr->host_list;
6476 addr2->fallback_hosts = addr->fallback_hosts;
6477 addr2->prop.errors_address = addr->prop.errors_address;
6478 copyflag(addr2, addr, af_hide_child | af_local_host_removed);
6480 DEBUG(D_deliver|D_route)
6482 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
6484 "Routing for %s copied from %s\n",
6485 addr2->address, addr2->address, addr->address);
6489 } /* Continue with routing the next address. */
6490 } /* Loop to process any child addresses that the routers created, and
6491 any rerouted addresses that got put back on the new chain. */
6494 /* Debugging: show the results of the routing */
6496 DEBUG(D_deliver|D_retry|D_route)
6499 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
6500 debug_printf("After routing:\n Local deliveries:\n");
6501 for (p = addr_local; p; p = p->next)
6502 debug_printf(" %s\n", p->address);
6504 debug_printf(" Remote deliveries:\n");
6505 for (p = addr_remote; p; p = p->next)
6506 debug_printf(" %s\n", p->address);
6508 debug_printf(" Failed addresses:\n");
6509 for (p = addr_failed; p; p = p->next)
6510 debug_printf(" %s\n", p->address);
6512 debug_printf(" Deferred addresses:\n");
6513 for (p = addr_defer; p; p = p->next)
6514 debug_printf(" %s\n", p->address);
6517 /* Free any resources that were cached during routing. */
6522 /* These two variables are set only during routing, after check_local_user.
6523 Ensure they are not set in transports. */
6525 local_user_gid = (gid_t)(-1);
6526 local_user_uid = (uid_t)(-1);
6528 /* Check for any duplicate addresses. This check is delayed until after
6529 routing, because the flexibility of the routing configuration means that
6530 identical addresses with different parentage may end up being redirected to
6531 different addresses. Checking for duplicates too early (as we previously used
6532 to) makes this kind of thing not work. */
6534 do_duplicate_check(&addr_local);
6535 do_duplicate_check(&addr_remote);
6537 /* When acting as an MUA wrapper, we proceed only if all addresses route to a
6538 remote transport. The check that they all end up in one transaction happens in
6539 the do_remote_deliveries() function. */
6542 && (addr_local || addr_failed || addr_defer)
6546 uschar *which, *colon, *msg;
6553 else if (addr_defer)
6556 which = US"deferred";
6564 while (addr->parent) addr = addr->parent;
6569 msg = addr->message;
6571 else colon = msg = US"";
6573 /* We don't need to log here for a forced failure as it will already
6574 have been logged. Defer will also have been logged, but as a defer, so we do
6575 need to do the failure logging. */
6577 if (addr != addr_failed)
6578 log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery",
6579 addr->address, which);
6581 /* Always write an error to the caller */
6583 fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address,
6586 final_yield = DELIVER_MUA_FAILED;
6587 addr_failed = addr_defer = NULL; /* So that we remove the message */
6588 goto DELIVERY_TIDYUP;
6592 /* If this is a run to continue deliveries to an external channel that is
6593 already set up, defer any local deliveries. */
6595 if (continue_transport)
6599 address_item *addr = addr_defer;
6600 while (addr->next) addr = addr->next;
6601 addr->next = addr_local;
6604 addr_defer = addr_local;
6609 /* Because address rewriting can happen in the routers, we should not really do
6610 ANY deliveries until all addresses have been routed, so that all recipients of
6611 the message get the same headers. However, this is in practice not always
6612 possible, since sometimes remote addresses give DNS timeouts for days on end.
6613 The pragmatic approach is to deliver what we can now, saving any rewritten
6614 headers so that at least the next lot of recipients benefit from the rewriting
6615 that has already been done.
6617 If any headers have been rewritten during routing, update the spool file to
6618 remember them for all subsequent deliveries. This can be delayed till later if
6619 there is only address to be delivered - if it succeeds the spool write need not
6622 if ( header_rewritten
6624 && (addr_local->next || addr_remote)
6626 || (addr_remote && addr_remote->next)
6629 /* Panic-dies on error */
6630 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
6631 header_rewritten = FALSE;
6635 /* If there are any deliveries to be done, open the journal file. This is used
6636 to record successful deliveries as soon as possible after each delivery is
6637 known to be complete. A file opened with O_APPEND is used so that several
6638 processes can run simultaneously.
6640 The journal is just insurance against crashes. When the spool file is
6641 ultimately updated at the end of processing, the journal is deleted. If a
6642 journal is found to exist at the start of delivery, the addresses listed
6643 therein are added to the non-recipients. */
6645 if (addr_local || addr_remote)
6647 sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
6648 journal_fd = Uopen(spoolname, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE);
6652 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s",
6653 spoolname, strerror(errno));
6654 return DELIVER_NOT_ATTEMPTED;
6657 /* Set the close-on-exec flag, make the file owned by Exim, and ensure
6658 that the mode is correct - the group setting doesn't always seem to get
6659 set automatically. */
6661 if( fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC)
6662 || fchown(journal_fd, exim_uid, exim_gid)
6663 || fchmod(journal_fd, SPOOL_MODE)
6666 int ret = Uunlink(spoolname);
6667 log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s",
6668 spoolname, strerror(errno));
6669 if(ret && errno != ENOENT)
6670 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
6671 spoolname, strerror(errno));
6672 return DELIVER_NOT_ATTEMPTED;
6678 /* Now we can get down to the business of actually doing deliveries. Local
6679 deliveries are done first, then remote ones. If ever the problems of how to
6680 handle fallback transports are figured out, this section can be put into a loop
6681 for handling fallbacks, though the uid switching will have to be revised. */
6683 /* Precompile a regex that is used to recognize a parameter in response
6684 to an LHLO command, if is isn't already compiled. This may be used on both
6685 local and remote LMTP deliveries. */
6687 if (!regex_IGNOREQUOTA)
6689 regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
6691 /* Handle local deliveries */
6695 DEBUG(D_deliver|D_transport)
6696 debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
6697 do_local_deliveries();
6698 disable_logging = FALSE;
6701 /* If queue_run_local is set, we do not want to attempt any remote deliveries,
6702 so just queue them all. */
6704 if (queue_run_local)
6707 address_item *addr = addr_remote;
6708 addr_remote = addr->next;
6710 addr->basic_errno = ERRNO_LOCAL_ONLY;
6711 addr->message = US"remote deliveries suppressed";
6712 (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0);
6715 /* Handle remote deliveries */
6719 DEBUG(D_deliver|D_transport)
6720 debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
6722 /* Precompile some regex that are used to recognize parameters in response
6723 to an EHLO command, if they aren't already compiled. */
6727 /* Now sort the addresses if required, and do the deliveries. The yield of
6728 do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
6729 cannot be delivered in one transaction. */
6731 if (remote_sort_domains) sort_remote_deliveries();
6732 if (!do_remote_deliveries(FALSE))
6734 log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all "
6735 "be delivered in one transaction");
6736 fprintf(stderr, "delivery to smarthost failed (configuration problem)\n");
6738 final_yield = DELIVER_MUA_FAILED;
6739 addr_failed = addr_defer = NULL; /* So that we remove the message */
6740 goto DELIVERY_TIDYUP;
6743 /* See if any of the addresses that failed got put on the queue for delivery
6744 to their fallback hosts. We do it this way because often the same fallback
6745 host is used for many domains, so all can be sent in a single transaction
6746 (if appropriately configured). */
6748 if (addr_fallback && !mua_wrapper)
6750 DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n");
6751 addr_remote = addr_fallback;
6752 addr_fallback = NULL;
6753 if (remote_sort_domains) sort_remote_deliveries();
6754 do_remote_deliveries(TRUE);
6756 disable_logging = FALSE;
6760 /* All deliveries are now complete. Ignore SIGTERM during this tidying up
6761 phase, to minimize cases of half-done things. */
6764 debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
6766 /* Root privilege is no longer needed */
6768 exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying");
6770 set_process_info("tidying up after delivering %s", message_id);
6771 signal(SIGTERM, SIG_IGN);
6773 /* When we are acting as an MUA wrapper, the smtp transport will either have
6774 succeeded for all addresses, or failed them all in normal cases. However, there
6775 are some setup situations (e.g. when a named port does not exist) that cause an
6776 immediate exit with deferral of all addresses. Convert those into failures. We
6777 do not ever want to retry, nor do we want to send a bounce message. */
6783 address_item *addr, *nextaddr;
6784 for (addr = addr_defer; addr; addr = nextaddr)
6786 log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred "
6787 "delivery", addr->address);
6788 nextaddr = addr->next;
6789 addr->next = addr_failed;
6795 /* Now all should either have succeeded or failed. */
6798 final_yield = DELIVER_MUA_SUCCEEDED;
6802 uschar *s = addr_failed->user_message;
6804 if (!s) s = addr_failed->message;
6806 fprintf(stderr, "Delivery failed: ");
6807 if (addr_failed->basic_errno > 0)
6809 fprintf(stderr, "%s", strerror(addr_failed->basic_errno));
6810 if (s) fprintf(stderr, ": ");
6812 if ((host = addr_failed->host_used))
6813 fprintf(stderr, "H=%s [%s]: ", host->name, host->address);
6815 fprintf(stderr, "%s", CS s);
6816 else if (addr_failed->basic_errno <= 0)
6817 fprintf(stderr, "unknown error");
6818 fprintf(stderr, "\n");
6820 final_yield = DELIVER_MUA_FAILED;
6825 /* In a normal configuration, we now update the retry database. This is done in
6826 one fell swoop at the end in order not to keep opening and closing (and
6827 locking) the database. The code for handling retries is hived off into a
6828 separate module for convenience. We pass it the addresses of the various
6829 chains, because deferred addresses can get moved onto the failed chain if the
6830 retry cutoff time has expired for all alternative destinations. Bypass the
6831 updating of the database if the -N flag is set, which is a debugging thing that
6832 prevents actual delivery. */
6834 else if (!dont_deliver)
6835 retry_update(&addr_defer, &addr_failed, &addr_succeed);
6837 /* Send DSN for successful messages if requested */
6838 addr_senddsn = NULL;
6840 for (addr_dsntmp = addr_succeed; addr_dsntmp; addr_dsntmp = addr_dsntmp->next)
6842 /* af_ignore_error not honored here. it's not an error */
6843 DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n"
6844 "DSN: processing successful delivery address: %s\n"
6845 "DSN: Sender_address: %s\n"
6846 "DSN: orcpt: %s flags: %d\n"
6847 "DSN: envid: %s ret: %d\n"
6848 "DSN: Final recipient: %s\n"
6849 "DSN: Remote SMTP server supports DSN: %d\n",
6850 addr_dsntmp->router->name,
6851 addr_dsntmp->address,
6853 addr_dsntmp->dsn_orcpt, addr_dsntmp->dsn_flags,
6855 addr_dsntmp->address,
6856 addr_dsntmp->dsn_aware
6859 /* send report if next hop not DSN aware or a router flagged "last DSN hop"
6860 and a report was requested */
6861 if ( ( addr_dsntmp->dsn_aware != dsn_support_yes
6862 || addr_dsntmp->dsn_flags & rf_dsnlasthop
6864 && addr_dsntmp->dsn_flags & rf_dsnflags
6865 && addr_dsntmp->dsn_flags & rf_notify_success
6868 /* copy and relink address_item and send report with all of them at once later */
6869 address_item *addr_next;
6870 addr_next = addr_senddsn;
6871 addr_senddsn = store_get(sizeof(address_item));
6872 memcpy(addr_senddsn, addr_dsntmp, sizeof(address_item));
6873 addr_senddsn->next = addr_next;
6876 DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n");
6884 /* create exim process to send message */
6885 pid = child_open_exim(&fd);
6887 DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid);
6889 if (pid < 0) /* Creation of child failed */
6891 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
6892 "create child process to send failure message: %s", getpid(),
6893 getppid(), strerror(errno));
6895 DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n");
6897 else /* Creation of child succeeded */
6899 FILE *f = fdopen(fd, "wb");
6900 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
6901 int topt = topt_add_return_path | topt_no_body;
6905 debug_printf("sending error message to: %s\n", sender_address);
6907 /* build unique id for MIME boundary */
6908 bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
6909 DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound);
6911 if (errors_reply_to)
6912 fprintf(f, "Reply-To: %s\n", errors_reply_to);
6914 fprintf(f, "Auto-Submitted: auto-generated\n"
6915 "From: Mail Delivery System <Mailer-Daemon@%s>\n"
6917 "Subject: Delivery Status Notification\n"
6918 "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n"
6919 "MIME-Version: 1.0\n\n"
6922 "Content-type: text/plain; charset=us-ascii\n\n"
6924 "This message was created automatically by mail delivery software.\n"
6925 " ----- The following addresses had successful delivery notifications -----\n",
6926 qualify_domain_sender, sender_address, bound, bound);
6928 for (addr_dsntmp = addr_senddsn; addr_dsntmp;
6929 addr_dsntmp = addr_dsntmp->next)
6930 fprintf(f, "<%s> (relayed %s)\n\n",
6931 addr_dsntmp->address,
6932 (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1
6933 ? "via non DSN router"
6934 : addr_dsntmp->dsn_aware == dsn_support_no
6935 ? "to non-DSN-aware mailer"
6936 : "via non \"Remote SMTP\" router"
6940 "Content-type: message/delivery-status\n\n"
6941 "Reporting-MTA: dns; %s\n",
6942 bound, smtp_active_hostname);
6945 { /* must be decoded from xtext: see RFC 3461:6.3a */
6947 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
6948 fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
6950 fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
6954 for (addr_dsntmp = addr_senddsn;
6956 addr_dsntmp = addr_dsntmp->next)
6958 if (addr_dsntmp->dsn_orcpt)
6959 fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt);
6961 fprintf(f, "Action: delivered\n"
6962 "Final-Recipient: rfc822;%s\n"
6964 addr_dsntmp->address);
6966 if (addr_dsntmp->host_used && addr_dsntmp->host_used->name)
6967 fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n",
6968 addr_dsntmp->host_used->name);
6970 fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n",
6971 (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 ? "DSN" : "SMTP");
6974 fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound);
6977 transport_filter_argv = NULL; /* Just in case */
6978 return_path = sender_address; /* In case not previously set */
6980 /* Write the original email out */
6981 transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0);
6984 fprintf(f,"\n--%s--\n", bound);
6988 rc = child_close(pid, 0); /* Waits for child to close, no timeout */
6992 /* If any addresses failed, we must send a message to somebody, unless
6993 af_ignore_error is set, in which case no action is taken. It is possible for
6994 several messages to get sent if there are addresses with different
7001 uschar *logtod = tod_stamp(tod_log);
7003 address_item *handled_addr = NULL;
7004 address_item **paddr;
7005 address_item *msgchain = NULL;
7006 address_item **pmsgchain = &msgchain;
7008 /* There are weird cases when logging is disabled in the transport. However,
7009 there may not be a transport (address failed by a router). */
7011 disable_logging = FALSE;
7012 if (addr_failed->transport)
7013 disable_logging = addr_failed->transport->disable_logging;
7016 debug_printf("processing failed address %s\n", addr_failed->address);
7018 /* There are only two ways an address in a bounce message can get here:
7020 (1) When delivery was initially deferred, but has now timed out (in the call
7021 to retry_update() above). We can detect this by testing for
7022 af_retry_timedout. If the address does not have its own errors address,
7023 we arrange to ignore the error.
7025 (2) If delivery failures for bounce messages are being ignored. We can detect
7026 this by testing for af_ignore_error. This will also be set if a bounce
7027 message has been autothawed and the ignore_bounce_errors_after time has
7028 passed. It might also be set if a router was explicitly configured to
7029 ignore errors (errors_to = "").
7031 If neither of these cases obtains, something has gone wrong. Log the
7032 incident, but then ignore the error. */
7034 if (sender_address[0] == 0 && !addr_failed->prop.errors_address)
7036 if ( !testflag(addr_failed, af_retry_timedout)
7037 && !testflag(addr_failed, af_ignore_error))
7039 log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message "
7040 "failure is neither frozen nor ignored (it's been ignored)");
7042 setflag(addr_failed, af_ignore_error);
7045 /* If the first address on the list has af_ignore_error set, just remove
7046 it from the list, throw away any saved message file, log it, and
7047 mark the recipient done. */
7049 if ( testflag(addr_failed, af_ignore_error)
7050 || ( addr_failed->dsn_flags & rf_dsnflags
7051 && (addr_failed->dsn_flags & rf_notify_failure) != rf_notify_failure
7055 addr_failed = addr->next;
7056 if (addr->return_filename) Uunlink(addr->return_filename);
7058 log_write(0, LOG_MAIN, "%s%s%s%s: error ignored",
7060 !addr->parent ? US"" : US" <",
7061 !addr->parent ? US"" : addr->parent->address,
7062 !addr->parent ? US"" : US">");
7064 address_done(addr, logtod);
7065 child_done(addr, logtod);
7066 /* Panic-dies on error */
7067 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7070 /* Otherwise, handle the sending of a message. Find the error address for
7071 the first address, then send a message that includes all failed addresses
7072 that have the same error address. Note the bounce_recipient is a global so
7073 that it can be accesssed by $bounce_recipient while creating a customized
7078 if (!(bounce_recipient = addr_failed->prop.errors_address))
7079 bounce_recipient = sender_address;
7081 /* Make a subprocess to send a message */
7083 if ((pid = child_open_exim(&fd)) < 0)
7084 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
7085 "create child process to send failure message: %s", getpid(),
7086 getppid(), strerror(errno));
7088 /* Creation of child succeeded */
7095 uschar *bcc, *emf_text;
7096 FILE *f = fdopen(fd, "wb");
7098 BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0;
7099 int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) *
7100 DELIVER_IN_BUFFER_SIZE;
7102 uschar *dsnlimitmsg;
7103 uschar *dsnnotifyhdr;
7107 debug_printf("sending error message to: %s\n", bounce_recipient);
7109 /* Scan the addresses for all that have the same errors address, removing
7110 them from the addr_failed chain, and putting them on msgchain. */
7112 paddr = &addr_failed;
7113 for (addr = addr_failed; addr; addr = *paddr)
7114 if (Ustrcmp(bounce_recipient, addr->prop.errors_address
7115 ? addr->prop.errors_address : sender_address) == 0)
7116 { /* The same - dechain */
7117 *paddr = addr->next;
7120 pmsgchain = &(addr->next);
7123 paddr = &addr->next; /* Not the same; skip */
7125 /* Include X-Failed-Recipients: for automatic interpretation, but do
7126 not let any one header line get too long. We do this by starting a
7127 new header every 50 recipients. Omit any addresses for which the
7128 "hide_child" flag is set. */
7130 for (addr = msgchain; addr; addr = addr->next)
7132 if (testflag(addr, af_hide_child)) continue;
7140 ? "X-Failed-Recipients: "
7142 testflag(addr, af_pfr) && addr->parent
7143 ? string_printing(addr->parent->address)
7144 : string_printing(addr->address));
7146 if (rcount > 0) fprintf(f, "\n");
7148 /* Output the standard headers */
7150 if (errors_reply_to)
7151 fprintf(f, "Reply-To: %s\n", errors_reply_to);
7152 fprintf(f, "Auto-Submitted: auto-replied\n");
7154 fprintf(f, "To: %s\n", bounce_recipient);
7156 /* generate boundary string and output MIME-Headers */
7157 bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
7159 fprintf(f, "Content-Type: multipart/report;"
7160 " report-type=delivery-status; boundary=%s\n"
7161 "MIME-Version: 1.0\n",
7164 /* Open a template file if one is provided. Log failure to open, but
7165 carry on - default texts will be used. */
7167 if (bounce_message_file)
7168 if (!(emf = Ufopen(bounce_message_file, "rb")))
7169 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error "
7170 "message texts: %s", bounce_message_file, strerror(errno));
7172 /* Quietly copy to configured additional addresses if required. */
7174 if ((bcc = moan_check_errorcopy(bounce_recipient)))
7175 fprintf(f, "Bcc: %s\n", bcc);
7177 /* The texts for the message can be read from a template file; if there
7178 isn't one, or if it is too short, built-in texts are used. The first
7179 emf text is a Subject: and any other headers. */
7181 if ((emf_text = next_emf(emf, US"header")))
7182 fprintf(f, "%s\n", emf_text);
7184 fprintf(f, "Subject: Mail delivery failed%s\n\n",
7185 to_sender? ": returning message to sender" : "");
7187 /* output human readable part as text/plain section */
7189 "Content-type: text/plain; charset=us-ascii\n\n",
7192 if ((emf_text = next_emf(emf, US"intro")))
7193 fprintf(f, "%s", CS emf_text);
7197 /* This message has been reworded several times. It seems to be confusing to
7198 somebody, however it is worded. I have retreated to the original, simple
7200 "This message was created automatically by mail delivery software.\n");
7202 if (bounce_message_text)
7203 fprintf(f, "%s", CS bounce_message_text);
7206 "\nA message that you sent could not be delivered to one or more of its\n"
7207 "recipients. This is a permanent error. The following address(es) failed:\n");
7210 "\nA message sent by\n\n <%s>\n\n"
7211 "could not be delivered to one or more of its recipients. The following\n"
7212 "address(es) failed:\n", sender_address);
7216 /* Process the addresses, leaving them on the msgchain if they have a
7217 file name for a return message. (There has already been a check in
7218 post_process_one() for the existence of data in the message file.) A TRUE
7219 return from print_address_information() means that the address is not
7223 for (addr = msgchain; addr; addr = *paddr)
7225 if (print_address_information(addr, f, US" ", US"\n ", US""))
7226 print_address_error(addr, f, US"");
7228 /* End the final line for the address */
7232 /* Leave on msgchain if there's a return file. */
7234 if (addr->return_file >= 0)
7236 paddr = &(addr->next);
7240 /* Else save so that we can tick off the recipient when the
7245 *paddr = addr->next;
7246 addr->next = handled_addr;
7247 handled_addr = addr;
7253 /* Get the next text, whether we need it or not, so as to be
7254 positioned for the one after. */
7256 emf_text = next_emf(emf, US"generated text");
7258 /* If there were any file messages passed by the local transports,
7259 include them in the message. Then put the address on the handled chain.
7260 In the case of a batch of addresses that were all sent to the same
7261 transport, the return_file field in all of them will contain the same
7262 fd, and the return_filename field in the *last* one will be set (to the
7263 name of the file). */
7267 address_item *nextaddr;
7270 fprintf(f, "%s", CS emf_text);
7273 "The following text was generated during the delivery "
7274 "attempt%s:\n", (filecount > 1)? "s" : "");
7276 for (addr = msgchain; addr; addr = nextaddr)
7279 address_item *topaddr = addr;
7281 /* List all the addresses that relate to this file */
7284 while(addr) /* Insurance */
7286 print_address_information(addr, f, US"------ ", US"\n ",
7288 if (addr->return_filename) break;
7293 /* Now copy the file */
7295 if (!(fm = Ufopen(addr->return_filename, "rb")))
7296 fprintf(f, " +++ Exim error... failed to open text file: %s\n",
7300 while ((ch = fgetc(fm)) != EOF) fputc(ch, f);
7303 Uunlink(addr->return_filename);
7305 /* Can now add to handled chain, first fishing off the next
7306 address on the msgchain. */
7308 nextaddr = addr->next;
7309 addr->next = handled_addr;
7310 handled_addr = topaddr;
7315 /* output machine readable part */
7317 if (message_smtputf8)
7319 "Content-type: message/global-delivery-status\n\n"
7320 "Reporting-MTA: dns; %s\n",
7321 bound, smtp_active_hostname);
7325 "Content-type: message/delivery-status\n\n"
7326 "Reporting-MTA: dns; %s\n",
7327 bound, smtp_active_hostname);
7331 /* must be decoded from xtext: see RFC 3461:6.3a */
7333 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
7334 fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
7336 fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
7340 for (addr = handled_addr; addr; addr = addr->next)
7343 fprintf(f, "Action: failed\n"
7344 "Final-Recipient: rfc822;%s\n"
7347 if ((hu = addr->host_used) && hu->name)
7350 fprintf(f, "Remote-MTA: dns; %s\n", hu->name);
7351 #ifdef EXPERIMENTAL_DSN_INFO
7354 uschar * p = hu->port == 25
7355 ? US"" : string_sprintf(":%d", hu->port);
7356 fprintf(f, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p);
7358 if ((s = addr->smtp_greeting) && *s)
7359 fprintf(f, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s);
7360 if ((s = addr->helo_response) && *s)
7361 fprintf(f, "X-Remote-MTA-helo-response: X-str; %s\n", s);
7362 if ((s = addr->message) && *s)
7363 fprintf(f, "X-Exim-Diagnostic: X-str; %s\n", s);
7365 print_dsn_diagnostic_code(addr, f);
7370 /* Now copy the message, trying to give an intelligible comment if
7371 it is too long for it all to be copied. The limit isn't strictly
7372 applied because of the buffering. There is, however, an option
7373 to suppress copying altogether. */
7375 emf_text = next_emf(emf, US"copy");
7378 we ignore the intro text from template and add
7379 the text for bounce_return_size_limit at the end.
7381 bounce_return_message is ignored
7382 in case RET= is defined we honor these values
7383 otherwise bounce_return_body is honored.
7385 bounce_return_size_limit is always honored.
7388 fprintf(f, "--%s\n", bound);
7390 dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned";
7391 dsnnotifyhdr = NULL;
7392 topt = topt_add_return_path;
7394 /* RET=HDRS? top priority */
7395 if (dsn_ret == dsn_ret_hdrs)
7396 topt |= topt_no_body;
7399 struct stat statbuf;
7401 /* no full body return at all? */
7402 if (!bounce_return_body)
7404 topt |= topt_no_body;
7405 /* add header if we overrule RET=FULL */
7406 if (dsn_ret == dsn_ret_full)
7407 dsnnotifyhdr = dsnlimitmsg;
7409 /* line length limited... return headers only if oversize */
7410 /* size limited ... return headers only if limit reached */
7411 else if ( max_received_linelength > bounce_return_linesize_limit
7412 || ( bounce_return_size_limit > 0
7413 && fstat(deliver_datafile, &statbuf) == 0
7414 && statbuf.st_size > max
7417 topt |= topt_no_body;
7418 dsnnotifyhdr = dsnlimitmsg;
7423 if (message_smtputf8)
7424 fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n"
7425 : "Content-type: message/global\n\n",
7429 fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n"
7430 : "Content-type: message/rfc822\n\n",
7434 transport_filter_argv = NULL; /* Just in case */
7435 return_path = sender_address; /* In case not previously set */
7436 transport_write_message(NULL, fileno(f), topt,
7437 0, dsnnotifyhdr, NULL, NULL, NULL, NULL, 0);
7440 /* we never add the final text. close the file */
7444 fprintf(f, "\n--%s--\n", bound);
7446 /* Close the file, which should send an EOF to the child process
7447 that is receiving the message. Wait for it to finish. */
7450 rc = child_close(pid, 0); /* Waits for child to close, no timeout */
7452 /* In the test harness, let the child do it's thing first. */
7454 if (running_in_test_harness) millisleep(500);
7456 /* If the process failed, there was some disaster in setting up the
7457 error message. Unless the message is very old, ensure that addr_defer
7458 is non-null, which will have the effect of leaving the message on the
7459 spool. The failed addresses will get tried again next time. However, we
7460 don't really want this to happen too often, so freeze the message unless
7461 there are some genuine deferred addresses to try. To do this we have
7462 to call spool_write_header() here, because with no genuine deferred
7463 addresses the normal code below doesn't get run. */
7468 if (now - received_time < retry_maximum_timeout && !addr_defer)
7470 addr_defer = (address_item *)(+1);
7471 deliver_freeze = TRUE;
7472 deliver_frozen_at = time(NULL);
7473 /* Panic-dies on error */
7474 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7477 deliver_msglog("Process failed (%d) when writing error message "
7478 "to %s%s", rc, bounce_recipient, s);
7479 log_write(0, LOG_MAIN, "Process failed (%d) when writing error message "
7480 "to %s%s", rc, bounce_recipient, s);
7483 /* The message succeeded. Ensure that the recipients that failed are
7484 now marked finished with on the spool and their parents updated. */
7488 for (addr = handled_addr; addr; addr = addr->next)
7490 address_done(addr, logtod);
7491 child_done(addr, logtod);
7493 /* Panic-dies on error */
7494 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7500 disable_logging = FALSE; /* In case left set */
7502 /* Come here from the mua_wrapper case if routing goes wrong */
7506 /* If there are now no deferred addresses, we are done. Preserve the
7507 message log if so configured, and we are using them. Otherwise, sling it.
7508 Then delete the message itself. */
7514 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir,
7516 if (preserve_message_logs)
7519 sprintf(CS big_buffer, "%s/msglog.OLD/%s", spool_directory, id);
7520 if ((rc = Urename(spoolname, big_buffer)) < 0)
7522 (void)directory_make(spool_directory, US"msglog.OLD",
7523 MSGLOG_DIRECTORY_MODE, TRUE);
7524 rc = Urename(spoolname, big_buffer);
7527 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to move %s to the "
7528 "msglog.OLD directory", spoolname);
7531 if (Uunlink(spoolname) < 0)
7532 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7533 spoolname, strerror(errno));
7536 /* Remove the two message files. */
7538 sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id);
7539 if (Uunlink(spoolname) < 0)
7540 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7541 spoolname, strerror(errno));
7542 sprintf(CS spoolname, "%s/input/%s/%s-H", spool_directory, message_subdir, id);
7543 if (Uunlink(spoolname) < 0)
7544 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
7545 spoolname, strerror(errno));
7547 /* Log the end of this message, with queue time if requested. */
7549 if (LOGGING(queue_time_overall))
7550 log_write(0, LOG_MAIN, "Completed QT=%s",
7551 readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
7553 log_write(0, LOG_MAIN, "Completed");
7555 /* Unset deliver_freeze so that we won't try to move the spool files further down */
7556 deliver_freeze = FALSE;
7558 #ifndef DISABLE_EVENT
7559 (void) event_raise(event_action, US"msg:complete", NULL);
7563 /* If there are deferred addresses, we are keeping this message because it is
7564 not yet completed. Lose any temporary files that were catching output from
7565 pipes for any of the deferred addresses, handle one-time aliases, and see if
7566 the message has been on the queue for so long that it is time to send a warning
7567 message to the sender, unless it is a mailer-daemon. If all deferred addresses
7568 have the same domain, we can set deliver_domain for the expansion of
7569 delay_warning_ condition - if any of them are pipes, files, or autoreplies, use
7570 the parent's domain.
7572 If all the deferred addresses have an error number that indicates "retry time
7573 not reached", skip sending the warning message, because it won't contain the
7574 reason for the delay. It will get sent at the next real delivery attempt.
7575 However, if at least one address has tried, we'd better include all of them in
7578 If we can't make a process to send the message, don't worry.
7580 For mailing list expansions we want to send the warning message to the
7581 mailing list manager. We can't do a perfect job here, as some addresses may
7582 have different errors addresses, but if we take the errors address from
7583 each deferred address it will probably be right in most cases.
7585 If addr_defer == +1, it means there was a problem sending an error message
7586 for failed addresses, and there were no "real" deferred addresses. The value
7587 was set just to keep the message on the spool, so there is nothing to do here.
7590 else if (addr_defer != (address_item *)(+1))
7593 uschar *recipients = US"";
7594 BOOL delivery_attempted = FALSE;
7596 deliver_domain = testflag(addr_defer, af_pfr)
7597 ? addr_defer->parent->domain : addr_defer->domain;
7599 for (addr = addr_defer; addr; addr = addr->next)
7601 address_item *otaddr;
7603 if (addr->basic_errno > ERRNO_RETRY_BASE) delivery_attempted = TRUE;
7607 const uschar *d = testflag(addr, af_pfr)
7608 ? addr->parent->domain : addr->domain;
7610 /* The domain may be unset for an address that has never been routed
7611 because the system filter froze the message. */
7613 if (!d || Ustrcmp(d, deliver_domain) != 0)
7614 deliver_domain = NULL;
7617 if (addr->return_filename) Uunlink(addr->return_filename);
7619 /* Handle the case of one-time aliases. If any address in the ancestry
7620 of this one is flagged, ensure it is in the recipients list, suitably
7621 flagged, and that its parent is marked delivered. */
7623 for (otaddr = addr; otaddr; otaddr = otaddr->parent)
7624 if (otaddr->onetime_parent) break;
7629 int t = recipients_count;
7631 for (i = 0; i < recipients_count; i++)
7633 uschar *r = recipients_list[i].address;
7634 if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i;
7635 if (Ustrcmp(otaddr->address, r) == 0) break;
7638 /* Didn't find the address already in the list, and did find the
7639 ultimate parent's address in the list. After adding the recipient,
7640 update the errors address in the recipients list. */
7642 if (i >= recipients_count && t < recipients_count)
7644 DEBUG(D_deliver) debug_printf("one_time: adding %s in place of %s\n",
7645 otaddr->address, otaddr->parent->address);
7646 receive_add_recipient(otaddr->address, t);
7647 recipients_list[recipients_count-1].errors_to = otaddr->prop.errors_address;
7648 tree_add_nonrecipient(otaddr->parent->address);
7649 update_spool = TRUE;
7653 /* Except for error messages, ensure that either the errors address for
7654 this deferred address or, if there is none, the sender address, is on the
7655 list of recipients for a warning message. */
7657 if (sender_address[0] != 0)
7658 if (addr->prop.errors_address)
7660 if (Ustrstr(recipients, addr->prop.errors_address) == NULL)
7661 recipients = string_sprintf("%s%s%s", recipients,
7662 (recipients[0] == 0)? "" : ",", addr->prop.errors_address);
7666 if (Ustrstr(recipients, sender_address) == NULL)
7667 recipients = string_sprintf("%s%s%s", recipients,
7668 (recipients[0] == 0)? "" : ",", sender_address);
7672 /* Send a warning message if the conditions are right. If the condition check
7673 fails because of a lookup defer, there is nothing we can do. The warning
7674 is not sent. Another attempt will be made at the next delivery attempt (if
7678 && delivery_attempted
7679 && ( ((addr_defer->dsn_flags & rf_dsnflags) == 0)
7680 || (addr_defer->dsn_flags & rf_notify_delay) == rf_notify_delay
7682 && delay_warning[1] > 0
7683 && sender_address[0] != 0
7684 && ( !delay_warning_condition
7685 || expand_check_condition(delay_warning_condition,
7686 US"delay_warning", US"option")
7692 int queue_time = time(NULL) - received_time;
7694 /* When running in the test harness, there's an option that allows us to
7695 fudge this time so as to get repeatability of the tests. Take the first
7696 time off the list. In queue runs, the list pointer gets updated in the
7699 if (running_in_test_harness && fudged_queue_times[0] != 0)
7701 int qt = readconf_readtime(fudged_queue_times, '/', FALSE);
7704 DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n",
7705 fudged_queue_times);
7710 /* See how many warnings we should have sent by now */
7712 for (count = 0; count < delay_warning[1]; count++)
7713 if (queue_time < delay_warning[count+2]) break;
7715 show_time = delay_warning[count+1];
7717 if (count >= delay_warning[1])
7720 int last_gap = show_time;
7721 if (count > 1) last_gap -= delay_warning[count];
7722 extra = (queue_time - delay_warning[count+1])/last_gap;
7723 show_time += last_gap * extra;
7729 debug_printf("time on queue = %s\n", readconf_printtime(queue_time));
7730 debug_printf("warning counts: required %d done %d\n", count,
7734 /* We have computed the number of warnings there should have been by now.
7735 If there haven't been enough, send one, and up the count to what it should
7738 if (warning_count < count)
7742 pid_t pid = child_open_exim(&fd);
7748 FILE *f = fdopen(fd, "wb");
7752 if (warn_message_file)
7753 if (!(wmf = Ufopen(warn_message_file, "rb")))
7754 log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning "
7755 "message texts: %s", warn_message_file, strerror(errno));
7757 warnmsg_recipients = recipients;
7758 warnmsg_delay = queue_time < 120*60
7759 ? string_sprintf("%d minutes", show_time/60)
7760 : string_sprintf("%d hours", show_time/3600);
7762 if (errors_reply_to)
7763 fprintf(f, "Reply-To: %s\n", errors_reply_to);
7764 fprintf(f, "Auto-Submitted: auto-replied\n");
7766 fprintf(f, "To: %s\n", recipients);
7768 /* generated boundary string and output MIME-Headers */
7769 bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
7771 fprintf(f, "Content-Type: multipart/report;"
7772 " report-type=delivery-status; boundary=%s\n"
7773 "MIME-Version: 1.0\n",
7776 if ((wmf_text = next_emf(wmf, US"header")))
7777 fprintf(f, "%s\n", wmf_text);
7779 fprintf(f, "Subject: Warning: message %s delayed %s\n\n",
7780 message_id, warnmsg_delay);
7782 /* output human readable part as text/plain section */
7784 "Content-type: text/plain; charset=us-ascii\n\n",
7787 if ((wmf_text = next_emf(wmf, US"intro")))
7788 fprintf(f, "%s", CS wmf_text);
7792 "This message was created automatically by mail delivery software.\n");
7794 if (Ustrcmp(recipients, sender_address) == 0)
7796 "A message that you sent has not yet been delivered to one or more of its\n"
7797 "recipients after more than ");
7801 "A message sent by\n\n <%s>\n\n"
7802 "has not yet been delivered to one or more of its recipients after more than \n",
7805 fprintf(f, "%s on the queue on %s.\n\n"
7806 "The message identifier is: %s\n",
7807 warnmsg_delay, primary_hostname, message_id);
7809 for (h = header_list; h; h = h->next)
7810 if (strncmpic(h->text, US"Subject:", 8) == 0)
7811 fprintf(f, "The subject of the message is: %s", h->text + 9);
7812 else if (strncmpic(h->text, US"Date:", 5) == 0)
7813 fprintf(f, "The date of the message is: %s", h->text + 6);
7816 fprintf(f, "The address%s to which the message has not yet been "
7818 !addr_defer->next ? "" : "es",
7819 !addr_defer->next ? "is": "are");
7822 /* List the addresses, with error information if allowed */
7824 /* store addr_defer for machine readable part */
7825 address_item *addr_dsndefer = addr_defer;
7829 address_item *addr = addr_defer;
7830 addr_defer = addr->next;
7831 if (print_address_information(addr, f, US" ", US"\n ", US""))
7832 print_address_error(addr, f, US"Delay reason: ");
7841 if ((wmf_text = next_emf(wmf, US"final")))
7842 fprintf(f, "%s", CS wmf_text);
7848 "No action is required on your part. Delivery attempts will continue for\n"
7849 "some time, and this warning may be repeated at intervals if the message\n"
7850 "remains undelivered. Eventually the mail delivery software will give up,\n"
7851 "and when that happens, the message will be returned to you.\n");
7854 /* output machine readable part */
7855 fprintf(f, "\n--%s\n"
7856 "Content-type: message/delivery-status\n\n"
7857 "Reporting-MTA: dns; %s\n",
7859 smtp_active_hostname);
7864 /* must be decoded from xtext: see RFC 3461:6.3a */
7866 if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
7867 fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid);
7869 fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
7873 for ( ; addr_dsndefer; addr_dsndefer = addr_dsndefer->next)
7875 if (addr_dsndefer->dsn_orcpt)
7876 fprintf(f, "Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt);
7878 fprintf(f, "Action: delayed\n"
7879 "Final-Recipient: rfc822;%s\n"
7881 addr_dsndefer->address);
7882 if (addr_dsndefer->host_used && addr_dsndefer->host_used->name)
7884 fprintf(f, "Remote-MTA: dns; %s\n",
7885 addr_dsndefer->host_used->name);
7886 print_dsn_diagnostic_code(addr_dsndefer, f);
7892 "Content-type: text/rfc822-headers\n\n",
7896 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
7897 topt = topt_add_return_path | topt_no_body;
7898 transport_filter_argv = NULL; /* Just in case */
7899 return_path = sender_address; /* In case not previously set */
7900 /* Write the original email out */
7901 transport_write_message(NULL, fileno(f), topt, 0, NULL, NULL, NULL, NULL, NULL, 0);
7904 fprintf(f,"\n--%s--\n", bound);
7908 /* Close and wait for child process to complete, without a timeout.
7909 If there's an error, don't update the count. */
7912 if (child_close(pid, 0) == 0)
7914 warning_count = count;
7915 update_spool = TRUE; /* Ensure spool rewritten */
7921 /* Clear deliver_domain */
7923 deliver_domain = NULL;
7925 /* If this was a first delivery attempt, unset the first time flag, and
7926 ensure that the spool gets updated. */
7928 if (deliver_firsttime)
7930 deliver_firsttime = FALSE;
7931 update_spool = TRUE;
7934 /* If delivery was frozen and freeze_tell is set, generate an appropriate
7935 message, unless the message is a local error message (to avoid loops). Then
7936 log the freezing. If the text in "frozen_info" came from a system filter,
7937 it has been escaped into printing characters so as not to mess up log lines.
7938 For the "tell" message, we turn \n back into newline. Also, insert a newline
7939 near the start instead of the ": " string. */
7943 if (freeze_tell && freeze_tell[0] != 0 && !local_error_message)
7945 uschar *s = string_copy(frozen_info);
7946 uschar *ss = Ustrstr(s, " by the system filter: ");
7957 if (*ss == '\\' && ss[1] == 'n')
7964 moan_tell_someone(freeze_tell, addr_defer, US"Message frozen",
7965 "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id,
7969 /* Log freezing just before we update the -H file, to minimize the chance
7970 of a race problem. */
7972 deliver_msglog("*** Frozen%s\n", frozen_info);
7973 log_write(0, LOG_MAIN, "Frozen%s", frozen_info);
7976 /* If there have been any updates to the non-recipients list, or other things
7977 that get written to the spool, we must now update the spool header file so
7978 that it has the right information for the next delivery attempt. If there
7979 was more than one address being delivered, the header_change update is done
7980 earlier, in case one succeeds and then something crashes. */
7983 debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n",
7984 update_spool, header_rewritten);
7986 if (update_spool || header_rewritten)
7987 /* Panic-dies on error */
7988 (void)spool_write_header(message_id, SW_DELIVERING, NULL);
7991 /* Finished with the message log. If the message is complete, it will have
7992 been unlinked or renamed above. */
7994 if (message_logs) (void)fclose(message_log);
7996 /* Now we can close and remove the journal file. Its only purpose is to record
7997 successfully completed deliveries asap so that this information doesn't get
7998 lost if Exim (or the machine) crashes. Forgetting about a failed delivery is
7999 not serious, as trying it again is not harmful. The journal might not be open
8000 if all addresses were deferred at routing or directing. Nevertheless, we must
8001 remove it if it exists (may have been lying around from a crash during the
8002 previous delivery attempt). We don't remove the journal if a delivery
8003 subprocess failed to pass back delivery information; this is controlled by
8004 the remove_journal flag. When the journal is left, we also don't move the
8005 message off the main spool if frozen and the option is set. It should get moved
8006 at the next attempt, after the journal has been inspected. */
8008 if (journal_fd >= 0) (void)close(journal_fd);
8012 sprintf(CS spoolname, "%s/input/%s/%s-J", spool_directory, message_subdir, id);
8013 if (Uunlink(spoolname) < 0 && errno != ENOENT)
8014 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", spoolname,
8017 /* Move the message off the spool if reqested */
8019 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
8020 if (deliver_freeze && move_frozen_messages)
8021 (void)spool_move_message(id, message_subdir, US"", US"F");
8025 /* Closing the data file frees the lock; if the file has been unlinked it
8026 will go away. Otherwise the message becomes available for another process
8029 (void)close(deliver_datafile);
8030 deliver_datafile = -1;
8031 DEBUG(D_deliver) debug_printf("end delivery of %s\n", id);
8033 /* It is unlikely that there will be any cached resources, since they are
8034 released after routing, and in the delivery subprocesses. However, it's
8035 possible for an expansion for something afterwards (for example,
8036 expand_check_condition) to do a lookup. We must therefore be sure everything is
8040 acl_where = ACL_WHERE_UNKNOWN;
8049 if (!regex_PIPELINING) regex_PIPELINING =
8050 regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE);
8052 if (!regex_SIZE) regex_SIZE =
8053 regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE);
8055 if (!regex_AUTH) regex_AUTH =
8056 regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)",
8060 if (!regex_STARTTLS) regex_STARTTLS =
8061 regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE);
8064 #ifndef DISABLE_PRDR
8065 if (!regex_PRDR) regex_PRDR =
8066 regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE);
8070 if (!regex_UTF8) regex_UTF8 =
8071 regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE);
8074 if (!regex_DSN) regex_DSN =
8075 regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE);
8077 if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA =
8078 regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
8083 deliver_get_sender_address (uschar * id)
8086 uschar * new_sender_address,
8087 * save_sender_address;
8088 BOOL save_qr = queue_running;
8090 /* make spool_open_datafile non-noisy on fail */
8092 queue_running = TRUE;
8094 /* Side effect: message_subdir is set for the (possibly split) spool directory */
8096 deliver_datafile = spool_open_datafile(id);
8097 queue_running = save_qr;
8098 if (deliver_datafile < 0)
8101 /* Save and restore the global sender_address. I'm not sure if we should
8102 not save/restore all the other global variables too, because
8103 spool_read_header() may change all of them. But OTOH, when this
8104 deliver_get_sender_address() gets called, the current message is done
8105 already and nobody needs the globals anymore. (HS12, 2015-08-21) */
8107 sprintf(CS spoolname, "%s-H", id);
8108 save_sender_address = sender_address;
8110 rc = spool_read_header(spoolname, TRUE, TRUE);
8112 new_sender_address = sender_address;
8113 sender_address = save_sender_address;
8115 if (rc != spool_read_OK)
8118 assert(new_sender_address);
8120 (void)close(deliver_datafile);
8121 deliver_datafile = -1;
8123 return new_sender_address;
8128 /* End of deliver.c */