1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2009 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* The main code for delivering a message. */
14 /* Data block for keeping track of subprocesses for parallel remote
17 typedef struct pardata
{
18 address_item
*addrlist
; /* chain of addresses */
19 address_item
*addr
; /* next address data expected for */
20 pid_t pid
; /* subprocess pid */
21 int fd
; /* pipe fd for getting result from subprocess */
22 int transport_count
; /* returned transport count value */
23 BOOL done
; /* no more data needed */
24 uschar
*msg
; /* error message */
25 uschar
*return_path
; /* return_path for these addresses */
28 /* Values for the process_recipients variable */
30 enum { RECIP_ACCEPT
, RECIP_IGNORE
, RECIP_DEFER
,
31 RECIP_FAIL
, RECIP_FAIL_FILTER
, RECIP_FAIL_TIMEOUT
,
34 /* Mutually recursive functions for marking addresses done. */
36 static void child_done(address_item
*, uschar
*);
37 static void address_done(address_item
*, uschar
*);
39 /* Table for turning base-62 numbers into binary */
41 static uschar tab62
[] =
42 {0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, /* 0-9 */
43 0,10,11,12,13,14,15,16,17,18,19,20, /* A-K */
44 21,22,23,24,25,26,27,28,29,30,31,32, /* L-W */
45 33,34,35, 0, 0, 0, 0, 0, /* X-Z */
46 0,36,37,38,39,40,41,42,43,44,45,46, /* a-k */
47 47,48,49,50,51,52,53,54,55,56,57,58, /* l-w */
51 /*************************************************
52 * Local static variables *
53 *************************************************/
55 /* addr_duplicate is global because it needs to be seen from the Envelope-To
58 static address_item
*addr_defer
= NULL
;
59 static address_item
*addr_failed
= NULL
;
60 static address_item
*addr_fallback
= NULL
;
61 static address_item
*addr_local
= NULL
;
62 static address_item
*addr_new
= NULL
;
63 static address_item
*addr_remote
= NULL
;
64 static address_item
*addr_route
= NULL
;
65 static address_item
*addr_succeed
= NULL
;
67 static FILE *message_log
= NULL
;
68 static BOOL update_spool
;
69 static BOOL remove_journal
;
70 static int parcount
= 0;
71 static pardata
*parlist
= NULL
;
72 static int return_count
;
73 static uschar
*frozen_info
= US
"";
74 static uschar
*used_return_path
= NULL
;
76 static uschar spoolname
[PATH_MAX
];
80 /*************************************************
81 * Make a new address item *
82 *************************************************/
84 /* This function gets the store and initializes with default values. The
85 transport_return value defaults to DEFER, so that any unexpected failure to
86 deliver does not wipe out the message. The default unique string is set to a
87 copy of the address, so that its domain can be lowercased.
90 address the RFC822 address string
91 copy force a copy of the address
93 Returns: a pointer to an initialized address_item
97 deliver_make_addr(uschar
*address
, BOOL copy
)
99 address_item
*addr
= store_get(sizeof(address_item
));
100 *addr
= address_defaults
;
101 if (copy
) address
= string_copy(address
);
102 addr
->address
= address
;
103 addr
->unique
= string_copy(address
);
110 /*************************************************
111 * Set expansion values for an address *
112 *************************************************/
114 /* Certain expansion variables are valid only when handling an address or
115 address list. This function sets them up or clears the values, according to its
119 addr the address in question, or NULL to clear values
124 deliver_set_expansions(address_item
*addr
)
128 uschar
***p
= address_expansions
;
129 while (*p
!= NULL
) **p
++ = NULL
;
133 /* Exactly what gets set depends on whether there is one or more addresses, and
134 what they contain. These first ones are always set, taking their values from
135 the first address. */
137 if (addr
->host_list
== NULL
)
139 deliver_host
= deliver_host_address
= US
"";
143 deliver_host
= addr
->host_list
->name
;
144 deliver_host_address
= addr
->host_list
->address
;
147 deliver_recipients
= addr
;
148 deliver_address_data
= addr
->p
.address_data
;
149 deliver_domain_data
= addr
->p
.domain_data
;
150 deliver_localpart_data
= addr
->p
.localpart_data
;
152 /* These may be unset for multiple addresses */
154 deliver_domain
= addr
->domain
;
155 self_hostname
= addr
->self_hostname
;
157 #ifdef EXPERIMENTAL_BRIGHTMAIL
158 bmi_deliver
= 1; /* deliver by default */
159 bmi_alt_location
= NULL
;
160 bmi_base64_verdict
= NULL
;
161 bmi_base64_tracker_verdict
= NULL
;
164 /* If there's only one address we can set everything. */
166 if (addr
->next
== NULL
)
168 address_item
*addr_orig
;
170 deliver_localpart
= addr
->local_part
;
171 deliver_localpart_prefix
= addr
->prefix
;
172 deliver_localpart_suffix
= addr
->suffix
;
174 for (addr_orig
= addr
; addr_orig
->parent
!= NULL
;
175 addr_orig
= addr_orig
->parent
);
176 deliver_domain_orig
= addr_orig
->domain
;
178 /* Re-instate any prefix and suffix in the original local part. In all
179 normal cases, the address will have a router associated with it, and we can
180 choose the caseful or caseless version accordingly. However, when a system
181 filter sets up a pipe, file, or autoreply delivery, no router is involved.
182 In this case, though, there won't be any prefix or suffix to worry about. */
184 deliver_localpart_orig
= (addr_orig
->router
== NULL
)? addr_orig
->local_part
:
185 addr_orig
->router
->caseful_local_part
?
186 addr_orig
->cc_local_part
: addr_orig
->lc_local_part
;
188 /* If there's a parent, make its domain and local part available, and if
189 delivering to a pipe or file, or sending an autoreply, get the local
190 part from the parent. For pipes and files, put the pipe or file string
191 into address_pipe and address_file. */
193 if (addr
->parent
!= NULL
)
195 deliver_domain_parent
= addr
->parent
->domain
;
196 deliver_localpart_parent
= (addr
->parent
->router
== NULL
)?
197 addr
->parent
->local_part
:
198 addr
->parent
->router
->caseful_local_part
?
199 addr
->parent
->cc_local_part
: addr
->parent
->lc_local_part
;
201 /* File deliveries have their own flag because they need to be picked out
202 as special more often. */
204 if (testflag(addr
, af_pfr
))
206 if (testflag(addr
, af_file
)) address_file
= addr
->local_part
;
207 else if (deliver_localpart
[0] == '|') address_pipe
= addr
->local_part
;
208 deliver_localpart
= addr
->parent
->local_part
;
209 deliver_localpart_prefix
= addr
->parent
->prefix
;
210 deliver_localpart_suffix
= addr
->parent
->suffix
;
214 #ifdef EXPERIMENTAL_BRIGHTMAIL
215 /* Set expansion variables related to Brightmail AntiSpam */
216 bmi_base64_verdict
= bmi_get_base64_verdict(deliver_localpart_orig
, deliver_domain_orig
);
217 bmi_base64_tracker_verdict
= bmi_get_base64_tracker_verdict(bmi_base64_verdict
);
218 /* get message delivery status (0 - don't deliver | 1 - deliver) */
219 bmi_deliver
= bmi_get_delivery_status(bmi_base64_verdict
);
220 /* if message is to be delivered, get eventual alternate location */
221 if (bmi_deliver
== 1) {
222 bmi_alt_location
= bmi_get_alt_location(bmi_base64_verdict
);
228 /* For multiple addresses, don't set local part, and leave the domain and
229 self_hostname set only if it is the same for all of them. It is possible to
230 have multiple pipe and file addresses, but only when all addresses have routed
231 to the same pipe or file. */
236 if (testflag(addr
, af_pfr
))
238 if (testflag(addr
, af_file
)) address_file
= addr
->local_part
;
239 else if (addr
->local_part
[0] == '|') address_pipe
= addr
->local_part
;
241 for (addr2
= addr
->next
; addr2
!= NULL
; addr2
= addr2
->next
)
243 if (deliver_domain
!= NULL
&&
244 Ustrcmp(deliver_domain
, addr2
->domain
) != 0)
245 deliver_domain
= NULL
;
246 if (self_hostname
!= NULL
&& (addr2
->self_hostname
== NULL
||
247 Ustrcmp(self_hostname
, addr2
->self_hostname
) != 0))
248 self_hostname
= NULL
;
249 if (deliver_domain
== NULL
&& self_hostname
== NULL
) break;
257 /*************************************************
258 * Open a msglog file *
259 *************************************************/
261 /* This function is used both for normal message logs, and for files in the
262 msglog directory that are used to catch output from pipes. Try to create the
263 directory if it does not exist. From release 4.21, normal message logs should
264 be created when the message is received.
267 filename the file name
268 mode the mode required
269 error used for saying what failed
271 Returns: a file descriptor, or -1 (with errno set)
275 open_msglog_file(uschar
*filename
, int mode
, uschar
**error
)
277 int fd
= Uopen(filename
, O_WRONLY
|O_APPEND
|O_CREAT
, mode
);
279 if (fd
< 0 && errno
== ENOENT
)
282 sprintf(CS temp
, "msglog/%s", message_subdir
);
283 if (message_subdir
[0] == 0) temp
[6] = 0;
284 (void)directory_make(spool_directory
, temp
, MSGLOG_DIRECTORY_MODE
, TRUE
);
285 fd
= Uopen(filename
, O_WRONLY
|O_APPEND
|O_CREAT
, mode
);
288 /* Set the close-on-exec flag and change the owner to the exim uid/gid (this
289 function is called as root). Double check the mode, because the group setting
290 doesn't always get set automatically. */
294 (void)fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
);
295 if (fchown(fd
, exim_uid
, exim_gid
) < 0)
300 if (fchmod(fd
, mode
) < 0)
306 else *error
= US
"create";
314 /*************************************************
315 * Write to msglog if required *
316 *************************************************/
318 /* Write to the message log, if configured. This function may also be called
322 format a string format
328 deliver_msglog(const char *format
, ...)
331 if (!message_logs
) return;
332 va_start(ap
, format
);
333 vfprintf(message_log
, format
, ap
);
341 /*************************************************
342 * Replicate status for batch *
343 *************************************************/
345 /* When a transport handles a batch of addresses, it may treat them
346 individually, or it may just put the status in the first one, and return FALSE,
347 requesting that the status be copied to all the others externally. This is the
348 replication function. As well as the status, it copies the transport pointer,
349 which may have changed if appendfile passed the addresses on to a different
352 Argument: pointer to the first address in a chain
357 replicate_status(address_item
*addr
)
360 for (addr2
= addr
->next
; addr2
!= NULL
; addr2
= addr2
->next
)
362 addr2
->transport
= addr
->transport
;
363 addr2
->transport_return
= addr
->transport_return
;
364 addr2
->basic_errno
= addr
->basic_errno
;
365 addr2
->more_errno
= addr
->more_errno
;
366 addr2
->special_action
= addr
->special_action
;
367 addr2
->message
= addr
->message
;
368 addr2
->user_message
= addr
->user_message
;
374 /*************************************************
375 * Compare lists of hosts *
376 *************************************************/
378 /* This function is given two pointers to chains of host items, and it yields
379 TRUE if the lists refer to the same hosts in the same order, except that
381 (1) Multiple hosts with the same non-negative MX values are permitted to appear
382 in different orders. Round-robinning nameservers can cause this to happen.
384 (2) Multiple hosts with the same negative MX values less than MX_NONE are also
385 permitted to appear in different orders. This is caused by randomizing
388 This enables Exim to use a single SMTP transaction for sending to two entirely
389 different domains that happen to end up pointing at the same hosts.
392 one points to the first host list
393 two points to the second host list
395 Returns: TRUE if the lists refer to the same host set
399 same_hosts(host_item
*one
, host_item
*two
)
401 while (one
!= NULL
&& two
!= NULL
)
403 if (Ustrcmp(one
->name
, two
->name
) != 0)
406 host_item
*end_one
= one
;
407 host_item
*end_two
= two
;
409 /* Batch up only if there was no MX and the list was not randomized */
411 if (mx
== MX_NONE
) return FALSE
;
413 /* Find the ends of the shortest sequence of identical MX values */
415 while (end_one
->next
!= NULL
&& end_one
->next
->mx
== mx
&&
416 end_two
->next
!= NULL
&& end_two
->next
->mx
== mx
)
418 end_one
= end_one
->next
;
419 end_two
= end_two
->next
;
422 /* If there aren't any duplicates, there's no match. */
424 if (end_one
== one
) return FALSE
;
426 /* For each host in the 'one' sequence, check that it appears in the 'two'
427 sequence, returning FALSE if not. */
432 for (hi
= two
; hi
!= end_two
->next
; hi
= hi
->next
)
433 if (Ustrcmp(one
->name
, hi
->name
) == 0) break;
434 if (hi
== end_two
->next
) return FALSE
;
435 if (one
== end_one
) break;
439 /* All the hosts in the 'one' sequence were found in the 'two' sequence.
440 Ensure both are pointing at the last host, and carry on as for equality. */
451 /* True if both are NULL */
458 /*************************************************
459 * Compare header lines *
460 *************************************************/
462 /* This function is given two pointers to chains of header items, and it yields
463 TRUE if they are the same header texts in the same order.
466 one points to the first header list
467 two points to the second header list
469 Returns: TRUE if the lists refer to the same header set
473 same_headers(header_line
*one
, header_line
*two
)
477 if (one
== two
) return TRUE
; /* Includes the case where both NULL */
478 if (one
== NULL
|| two
== NULL
) return FALSE
;
479 if (Ustrcmp(one
->text
, two
->text
) != 0) return FALSE
;
487 /*************************************************
488 * Compare string settings *
489 *************************************************/
491 /* This function is given two pointers to strings, and it returns
492 TRUE if they are the same pointer, or if the two strings are the same.
495 one points to the first string
496 two points to the second string
498 Returns: TRUE or FALSE
502 same_strings(uschar
*one
, uschar
*two
)
504 if (one
== two
) return TRUE
; /* Includes the case where both NULL */
505 if (one
== NULL
|| two
== NULL
) return FALSE
;
506 return (Ustrcmp(one
, two
) == 0);
511 /*************************************************
512 * Compare uid/gid for addresses *
513 *************************************************/
515 /* This function is given a transport and two addresses. It yields TRUE if the
516 uid/gid/initgroups settings for the two addresses are going to be the same when
521 addr1 the first address
522 addr2 the second address
524 Returns: TRUE or FALSE
528 same_ugid(transport_instance
*tp
, address_item
*addr1
, address_item
*addr2
)
530 if (!tp
->uid_set
&& tp
->expand_uid
== NULL
&& !tp
->deliver_as_creator
)
532 if (testflag(addr1
, af_uid_set
) != testflag(addr2
, af_gid_set
) ||
533 (testflag(addr1
, af_uid_set
) &&
534 (addr1
->uid
!= addr2
->uid
||
535 testflag(addr1
, af_initgroups
) != testflag(addr2
, af_initgroups
))))
539 if (!tp
->gid_set
&& tp
->expand_gid
== NULL
)
541 if (testflag(addr1
, af_gid_set
) != testflag(addr2
, af_gid_set
) ||
542 (testflag(addr1
, af_gid_set
) && addr1
->gid
!= addr2
->gid
))
552 /*************************************************
553 * Record that an address is complete *
554 *************************************************/
556 /* This function records that an address is complete. This is straightforward
557 for most addresses, where the unique address is just the full address with the
558 domain lower cased. For homonyms (addresses that are the same as one of their
559 ancestors) their are complications. Their unique addresses have \x\ prepended
560 (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and
563 Exim used to record the unique addresses of homonyms as "complete". This,
564 however, fails when the pattern of redirection varies over time (e.g. if taking
565 unseen copies at only some times of day) because the prepended numbers may vary
566 from one delivery run to the next. This problem is solved by never recording
567 prepended unique addresses as complete. Instead, when a homonymic address has
568 actually been delivered via a transport, we record its basic unique address
569 followed by the name of the transport. This is checked in subsequent delivery
570 runs whenever an address is routed to a transport.
572 If the completed address is a top-level one (has no parent, which means it
573 cannot be homonymic) we also add the original address to the non-recipients
574 tree, so that it gets recorded in the spool file and therefore appears as
575 "done" in any spool listings. The original address may differ from the unique
576 address in the case of the domain.
578 Finally, this function scans the list of duplicates, marks as done any that
579 match this address, and calls child_done() for their ancestors.
582 addr address item that has been completed
583 now current time as a string
589 address_done(address_item
*addr
, uschar
*now
)
593 update_spool
= TRUE
; /* Ensure spool gets updated */
595 /* Top-level address */
597 if (addr
->parent
== NULL
)
599 tree_add_nonrecipient(addr
->unique
);
600 tree_add_nonrecipient(addr
->address
);
603 /* Homonymous child address */
605 else if (testflag(addr
, af_homonym
))
607 if (addr
->transport
!= NULL
)
609 tree_add_nonrecipient(
610 string_sprintf("%s/%s", addr
->unique
+ 3, addr
->transport
->name
));
614 /* Non-homonymous child address */
616 else tree_add_nonrecipient(addr
->unique
);
618 /* Check the list of duplicate addresses and ensure they are now marked
621 for (dup
= addr_duplicate
; dup
!= NULL
; dup
= dup
->next
)
623 if (Ustrcmp(addr
->unique
, dup
->unique
) == 0)
625 tree_add_nonrecipient(dup
->unique
);
626 child_done(dup
, now
);
634 /*************************************************
635 * Decrease counts in parents and mark done *
636 *************************************************/
638 /* This function is called when an address is complete. If there is a parent
639 address, its count of children is decremented. If there are still other
640 children outstanding, the function exits. Otherwise, if the count has become
641 zero, address_done() is called to mark the parent and its duplicates complete.
642 Then loop for any earlier ancestors.
645 addr points to the completed address item
646 now the current time as a string, for writing to the message log
652 child_done(address_item
*addr
, uschar
*now
)
655 while (addr
->parent
!= NULL
)
658 if ((addr
->child_count
-= 1) > 0) return; /* Incomplete parent */
659 address_done(addr
, now
);
661 /* Log the completion of all descendents only when there is no ancestor with
662 the same original address. */
664 for (aa
= addr
->parent
; aa
!= NULL
; aa
= aa
->parent
)
665 if (Ustrcmp(aa
->address
, addr
->address
) == 0) break;
666 if (aa
!= NULL
) continue;
668 deliver_msglog("%s %s: children all complete\n", now
, addr
->address
);
669 DEBUG(D_deliver
) debug_printf("%s: children all complete\n", addr
->address
);
676 /* If msg is NULL this is a delivery log and logchar is used. Otherwise
677 this is a nonstandard call; no two-characher delivery flag is written
678 but sender-host and sender are prefixed and "msg" is inserted in the log line.
681 flags passed to log_write()
684 delivery_log(int flags
, address_item
* addr
, int logchar
, uschar
* msg
)
687 int size
= 256; /* Used for a temporary, */
688 int ptr
= 0; /* expanding buffer, for */
689 uschar
*s
; /* building log lines; */
690 void *reset_point
; /* released afterwards. */
693 /* Log the delivery on the main log. We use an extensible string to build up
694 the log line, and reset the store afterwards. Remote deliveries should always
695 have a pointer to the host item that succeeded; local deliveries can have a
696 pointer to a single host item in their host list, for use by the transport. */
698 s
= reset_point
= store_get(size
);
700 log_address
= string_log_address(addr
, (log_write_selector
& L_all_parents
) != 0, TRUE
);
702 s
= string_append(s
, &size
, &ptr
, 3, host_and_ident(TRUE
), US
" ", log_address
);
706 s
= string_append(s
, &size
, &ptr
, 2, US
"> ", log_address
);
709 if ((log_extra_selector
& LX_sender_on_delivery
) != 0 || msg
)
710 s
= string_append(s
, &size
, &ptr
, 3, US
" F=<", sender_address
, US
">");
712 #ifdef EXPERIMENTAL_SRS
713 if(addr
->p
.srs_sender
)
714 s
= string_append(s
, &size
, &ptr
, 3, US
" SRS=<", addr
->p
.srs_sender
, US
">");
717 /* You might think that the return path must always be set for a successful
718 delivery; indeed, I did for some time, until this statement crashed. The case
719 when it is not set is for a delivery to /dev/null which is optimised by not
722 if (used_return_path
!= NULL
&&
723 (log_extra_selector
& LX_return_path_on_delivery
) != 0)
724 s
= string_append(s
, &size
, &ptr
, 3, US
" P=<", used_return_path
, US
">");
727 s
= string_append(s
, &size
, &ptr
, 2, US
" ", msg
);
729 /* For a delivery from a system filter, there may not be a router */
730 if (addr
->router
!= NULL
)
731 s
= string_append(s
, &size
, &ptr
, 2, US
" R=", addr
->router
->name
);
733 s
= string_append(s
, &size
, &ptr
, 2, US
" T=", addr
->transport
->name
);
735 if ((log_extra_selector
& LX_delivery_size
) != 0)
736 s
= string_append(s
, &size
, &ptr
, 2, US
" S=",
737 string_sprintf("%d", transport_count
));
741 if (addr
->transport
->info
->local
)
743 if (addr
->host_list
!= NULL
)
744 s
= string_append(s
, &size
, &ptr
, 2, US
" H=", addr
->host_list
->name
);
745 if (addr
->shadow_message
!= NULL
)
746 s
= string_cat(s
, &size
, &ptr
, addr
->shadow_message
,
747 Ustrlen(addr
->shadow_message
));
750 /* Remote delivery */
754 if (addr
->host_used
!= NULL
)
756 s
= string_append(s
, &size
, &ptr
, 5, US
" H=", addr
->host_used
->name
,
757 US
" [", addr
->host_used
->address
, US
"]");
758 if ((log_extra_selector
& LX_outgoing_port
) != 0)
759 s
= string_append(s
, &size
, &ptr
, 2, US
":", string_sprintf("%d",
760 addr
->host_used
->port
));
761 if (continue_sequence
> 1)
762 s
= string_cat(s
, &size
, &ptr
, US
"*", 1);
766 if ((log_extra_selector
& LX_tls_cipher
) != 0 && addr
->cipher
!= NULL
)
767 s
= string_append(s
, &size
, &ptr
, 2, US
" X=", addr
->cipher
);
768 if ((log_extra_selector
& LX_tls_certificate_verified
) != 0 &&
769 addr
->cipher
!= NULL
)
770 s
= string_append(s
, &size
, &ptr
, 2, US
" CV=",
771 testflag(addr
, af_cert_verified
)? "yes":"no");
772 if ((log_extra_selector
& LX_tls_peerdn
) != 0 && addr
->peerdn
!= NULL
)
773 s
= string_append(s
, &size
, &ptr
, 3, US
" DN=\"",
774 string_printing(addr
->peerdn
), US
"\"");
777 if (smtp_authenticated
)
779 s
= string_append(s
, &size
, &ptr
, 2, US
" A=", client_authenticator
);
780 if (client_authenticated_id
)
781 s
= string_append(s
, &size
, &ptr
, 2, US
":", client_authenticated_id
);
784 if ((log_extra_selector
& LX_smtp_confirmation
) != 0 &&
785 addr
->message
!= NULL
)
788 uschar
*p
= big_buffer
;
789 uschar
*ss
= addr
->message
;
791 for (i
= 0; i
< 100 && ss
[i
] != 0; i
++)
793 if (ss
[i
] == '\"' || ss
[i
] == '\\') *p
++ = '\\';
798 s
= string_append(s
, &size
, &ptr
, 2, US
" C=", big_buffer
);
802 /* Time on queue and actual time taken to deliver */
804 if ((log_extra_selector
& LX_queue_time
) != 0)
806 s
= string_append(s
, &size
, &ptr
, 2, US
" QT=",
807 readconf_printtime(time(NULL
) - received_time
));
810 if ((log_extra_selector
& LX_deliver_time
) != 0)
812 s
= string_append(s
, &size
, &ptr
, 2, US
" DT=",
813 readconf_printtime(addr
->more_errno
));
816 /* string_cat() always leaves room for the terminator. Release the
817 store we used to build the line after writing it. */
820 log_write(0, flags
, "%s", s
);
821 store_reset(reset_point
);
827 /*************************************************
828 * Actions at the end of handling an address *
829 *************************************************/
831 /* This is a function for processing a single address when all that can be done
832 with it has been done.
835 addr points to the address block
836 result the result of the delivery attempt
837 logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC)
838 driver_type indicates which type of driver (transport, or router) was last
839 to process the address
840 logchar '=' or '-' for use when logging deliveries with => or ->
846 post_process_one(address_item
*addr
, int result
, int logflags
, int driver_type
,
849 uschar
*now
= tod_stamp(tod_log
);
850 uschar
*driver_kind
= NULL
;
851 uschar
*driver_name
= NULL
;
854 int size
= 256; /* Used for a temporary, */
855 int ptr
= 0; /* expanding buffer, for */
856 uschar
*s
; /* building log lines; */
857 void *reset_point
; /* released afterwards. */
860 DEBUG(D_deliver
) debug_printf("post-process %s (%d)\n", addr
->address
, result
);
862 /* Set up driver kind and name for logging. Disable logging if the router or
863 transport has disabled it. */
865 if (driver_type
== DTYPE_TRANSPORT
)
867 if (addr
->transport
!= NULL
)
869 driver_name
= addr
->transport
->name
;
870 driver_kind
= US
" transport";
871 disable_logging
= addr
->transport
->disable_logging
;
873 else driver_kind
= US
"transporting";
875 else if (driver_type
== DTYPE_ROUTER
)
877 if (addr
->router
!= NULL
)
879 driver_name
= addr
->router
->name
;
880 driver_kind
= US
" router";
881 disable_logging
= addr
->router
->disable_logging
;
883 else driver_kind
= US
"routing";
886 /* If there's an error message set, ensure that it contains only printing
887 characters - it should, but occasionally things slip in and this at least
888 stops the log format from getting wrecked. We also scan the message for an LDAP
889 expansion item that has a password setting, and flatten the password. This is a
890 fudge, but I don't know a cleaner way of doing this. (If the item is badly
891 malformed, it won't ever have gone near LDAP.) */
893 if (addr
->message
!= NULL
)
895 addr
->message
= string_printing(addr
->message
);
896 if (((Ustrstr(addr
->message
, "failed to expand") != NULL
) || (Ustrstr(addr
->message
, "expansion of ") != NULL
)) &&
897 (Ustrstr(addr
->message
, "mysql") != NULL
||
898 Ustrstr(addr
->message
, "pgsql") != NULL
||
899 Ustrstr(addr
->message
, "sqlite") != NULL
||
900 Ustrstr(addr
->message
, "ldap:") != NULL
||
901 Ustrstr(addr
->message
, "ldapdn:") != NULL
||
902 Ustrstr(addr
->message
, "ldapm:") != NULL
))
904 addr
->message
= string_sprintf("Temporary internal error");
908 /* If we used a transport that has one of the "return_output" options set, and
909 if it did in fact generate some output, then for return_output we treat the
910 message as failed if it was not already set that way, so that the output gets
911 returned to the sender, provided there is a sender to send it to. For
912 return_fail_output, do this only if the delivery failed. Otherwise we just
913 unlink the file, and remove the name so that if the delivery failed, we don't
914 try to send back an empty or unwanted file. The log_output options operate only
917 In any case, we close the message file, because we cannot afford to leave a
918 file-descriptor for one address while processing (maybe very many) others. */
920 if (addr
->return_file
>= 0 && addr
->return_filename
!= NULL
)
922 BOOL return_output
= FALSE
;
924 (void)EXIMfsync(addr
->return_file
);
926 /* If there is no output, do nothing. */
928 if (fstat(addr
->return_file
, &statbuf
) == 0 && statbuf
.st_size
> 0)
930 transport_instance
*tb
= addr
->transport
;
932 /* Handle logging options */
934 if (tb
->log_output
|| (result
== FAIL
&& tb
->log_fail_output
) ||
935 (result
== DEFER
&& tb
->log_defer_output
))
938 FILE *f
= Ufopen(addr
->return_filename
, "rb");
940 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to open %s to log output "
941 "from %s transport: %s", addr
->return_filename
, tb
->name
,
945 s
= US
Ufgets(big_buffer
, big_buffer_size
, f
);
948 uschar
*p
= big_buffer
+ Ustrlen(big_buffer
);
949 while (p
> big_buffer
&& isspace(p
[-1])) p
--;
951 s
= string_printing(big_buffer
);
952 log_write(0, LOG_MAIN
, "<%s>: %s transport output: %s",
953 addr
->address
, tb
->name
, s
);
959 /* Handle returning options, but only if there is an address to return
962 if (sender_address
[0] != 0 || addr
->p
.errors_address
!= NULL
)
964 if (tb
->return_output
)
966 addr
->transport_return
= result
= FAIL
;
967 if (addr
->basic_errno
== 0 && addr
->message
== NULL
)
968 addr
->message
= US
"return message generated";
969 return_output
= TRUE
;
972 if (tb
->return_fail_output
&& result
== FAIL
) return_output
= TRUE
;
976 /* Get rid of the file unless it might be returned, but close it in
981 Uunlink(addr
->return_filename
);
982 addr
->return_filename
= NULL
;
983 addr
->return_file
= -1;
986 (void)close(addr
->return_file
);
989 /* The sucess case happens only after delivery by a transport. */
993 addr
->next
= addr_succeed
;
996 /* Call address_done() to ensure that we don't deliver to this address again,
997 and write appropriate things to the message log. If it is a child address, we
998 call child_done() to scan the ancestors and mark them complete if this is the
999 last child to complete. */
1001 address_done(addr
, now
);
1002 DEBUG(D_deliver
) debug_printf("%s delivered\n", addr
->address
);
1004 if (addr
->parent
== NULL
)
1006 deliver_msglog("%s %s: %s%s succeeded\n", now
, addr
->address
,
1007 driver_name
, driver_kind
);
1011 deliver_msglog("%s %s <%s>: %s%s succeeded\n", now
, addr
->address
,
1012 addr
->parent
->address
, driver_name
, driver_kind
);
1013 child_done(addr
, now
);
1016 delivery_log(LOG_MAIN
, addr
, logchar
, NULL
);
1020 /* Soft failure, or local delivery process failed; freezing may be
1023 else if (result
== DEFER
|| result
== PANIC
)
1025 if (result
== PANIC
) logflags
|= LOG_PANIC
;
1027 /* This puts them on the chain in reverse order. Do not change this, because
1028 the code for handling retries assumes that the one with the retry
1029 information is last. */
1031 addr
->next
= addr_defer
;
1034 /* The only currently implemented special action is to freeze the
1035 message. Logging of this is done later, just before the -H file is
1038 if (addr
->special_action
== SPECIAL_FREEZE
)
1040 deliver_freeze
= TRUE
;
1041 deliver_frozen_at
= time(NULL
);
1042 update_spool
= TRUE
;
1045 /* If doing a 2-stage queue run, we skip writing to either the message
1046 log or the main log for SMTP defers. */
1048 if (!queue_2stage
|| addr
->basic_errno
!= 0)
1052 /* For errors of the type "retry time not reached" (also remotes skipped
1053 on queue run), logging is controlled by L_retry_defer. Note that this kind
1054 of error number is negative, and all the retry ones are less than any
1057 unsigned int use_log_selector
= (addr
->basic_errno
<= ERRNO_RETRY_BASE
)?
1060 /* Build up the line that is used for both the message log and the main
1063 s
= reset_point
= store_get(size
);
1065 /* Create the address string for logging. Must not do this earlier, because
1066 an OK result may be changed to FAIL when a pipe returns text. */
1068 log_address
= string_log_address(addr
,
1069 (log_write_selector
& L_all_parents
) != 0, result
== OK
);
1071 s
= string_cat(s
, &size
, &ptr
, log_address
, Ustrlen(log_address
));
1073 /* Either driver_name contains something and driver_kind contains
1074 " router" or " transport" (note the leading space), or driver_name is
1075 a null string and driver_kind contains "routing" without the leading
1076 space, if all routing has been deferred. When a domain has been held,
1077 so nothing has been done at all, both variables contain null strings. */
1079 if (driver_name
== NULL
)
1081 if (driver_kind
!= NULL
)
1082 s
= string_append(s
, &size
, &ptr
, 2, US
" ", driver_kind
);
1086 if (driver_kind
[1] == 't' && addr
->router
!= NULL
)
1087 s
= string_append(s
, &size
, &ptr
, 2, US
" R=", addr
->router
->name
);
1089 ss
[1] = toupper(driver_kind
[1]);
1090 s
= string_append(s
, &size
, &ptr
, 2, ss
, driver_name
);
1093 sprintf(CS ss
, " defer (%d)", addr
->basic_errno
);
1094 s
= string_cat(s
, &size
, &ptr
, ss
, Ustrlen(ss
));
1096 if (addr
->basic_errno
> 0)
1097 s
= string_append(s
, &size
, &ptr
, 2, US
": ",
1098 US
strerror(addr
->basic_errno
));
1100 if (addr
->message
!= NULL
)
1101 s
= string_append(s
, &size
, &ptr
, 2, US
": ", addr
->message
);
1105 /* Log the deferment in the message log, but don't clutter it
1106 up with retry-time defers after the first delivery attempt. */
1108 if (deliver_firsttime
|| addr
->basic_errno
> ERRNO_RETRY_BASE
)
1109 deliver_msglog("%s %s\n", now
, s
);
1111 /* Write the main log and reset the store */
1113 log_write(use_log_selector
, logflags
, "== %s", s
);
1114 store_reset(reset_point
);
1119 /* Hard failure. If there is an address to which an error message can be sent,
1120 put this address on the failed list. If not, put it on the deferred list and
1121 freeze the mail message for human attention. The latter action can also be
1122 explicitly requested by a router or transport. */
1126 /* If this is a delivery error, or a message for which no replies are
1127 wanted, and the message's age is greater than ignore_bounce_errors_after,
1128 force the af_ignore_error flag. This will cause the address to be discarded
1129 later (with a log entry). */
1131 if (sender_address
[0] == 0 && message_age
>= ignore_bounce_errors_after
)
1132 setflag(addr
, af_ignore_error
);
1134 /* Freeze the message if requested, or if this is a bounce message (or other
1135 message with null sender) and this address does not have its own errors
1136 address. However, don't freeze if errors are being ignored. The actual code
1137 to ignore occurs later, instead of sending a message. Logging of freezing
1138 occurs later, just before writing the -H file. */
1140 if (!testflag(addr
, af_ignore_error
) &&
1141 (addr
->special_action
== SPECIAL_FREEZE
||
1142 (sender_address
[0] == 0 && addr
->p
.errors_address
== NULL
)
1145 frozen_info
= (addr
->special_action
== SPECIAL_FREEZE
)? US
"" :
1146 (sender_local
&& !local_error_message
)?
1147 US
" (message created with -f <>)" : US
" (delivery error message)";
1148 deliver_freeze
= TRUE
;
1149 deliver_frozen_at
= time(NULL
);
1150 update_spool
= TRUE
;
1152 /* The address is put on the defer rather than the failed queue, because
1153 the message is being retained. */
1155 addr
->next
= addr_defer
;
1159 /* Don't put the address on the nonrecipients tree yet; wait until an
1160 error message has been successfully sent. */
1164 addr
->next
= addr_failed
;
1168 /* Build up the log line for the message and main logs */
1170 s
= reset_point
= store_get(size
);
1172 /* Create the address string for logging. Must not do this earlier, because
1173 an OK result may be changed to FAIL when a pipe returns text. */
1175 log_address
= string_log_address(addr
,
1176 (log_write_selector
& L_all_parents
) != 0, result
== OK
);
1178 s
= string_cat(s
, &size
, &ptr
, log_address
, Ustrlen(log_address
));
1180 if ((log_extra_selector
& LX_sender_on_delivery
) != 0)
1181 s
= string_append(s
, &size
, &ptr
, 3, US
" F=<", sender_address
, US
">");
1183 /* Return path may not be set if no delivery actually happened */
1185 if (used_return_path
!= NULL
&&
1186 (log_extra_selector
& LX_return_path_on_delivery
) != 0)
1188 s
= string_append(s
, &size
, &ptr
, 3, US
" P=<", used_return_path
, US
">");
1191 if (addr
->router
!= NULL
)
1192 s
= string_append(s
, &size
, &ptr
, 2, US
" R=", addr
->router
->name
);
1193 if (addr
->transport
!= NULL
)
1194 s
= string_append(s
, &size
, &ptr
, 2, US
" T=", addr
->transport
->name
);
1196 if (addr
->host_used
!= NULL
)
1197 s
= string_append(s
, &size
, &ptr
, 5, US
" H=", addr
->host_used
->name
,
1198 US
" [", addr
->host_used
->address
, US
"]");
1200 if (addr
->basic_errno
> 0)
1201 s
= string_append(s
, &size
, &ptr
, 2, US
": ",
1202 US
strerror(addr
->basic_errno
));
1204 if (addr
->message
!= NULL
)
1205 s
= string_append(s
, &size
, &ptr
, 2, US
": ", addr
->message
);
1209 /* Do the logging. For the message log, "routing failed" for those cases,
1210 just to make it clearer. */
1212 if (driver_name
== NULL
)
1213 deliver_msglog("%s %s failed for %s\n", now
, driver_kind
, s
);
1215 deliver_msglog("%s %s\n", now
, s
);
1217 log_write(0, LOG_MAIN
, "** %s", s
);
1218 store_reset(reset_point
);
1221 /* Ensure logging is turned on again in all cases */
1223 disable_logging
= FALSE
;
1229 /*************************************************
1230 * Address-independent error *
1231 *************************************************/
1233 /* This function is called when there's an error that is not dependent on a
1234 particular address, such as an expansion string failure. It puts the error into
1235 all the addresses in a batch, logs the incident on the main and panic logs, and
1236 clears the expansions. It is mostly called from local_deliver(), but can be
1237 called for a remote delivery via findugid().
1240 logit TRUE if (MAIN+PANIC) logging required
1241 addr the first of the chain of addresses
1243 format format string for error message, or NULL if already set in addr
1244 ... arguments for the format
1250 common_error(BOOL logit
, address_item
*addr
, int code
, uschar
*format
, ...)
1252 address_item
*addr2
;
1253 addr
->basic_errno
= code
;
1259 va_start(ap
, format
);
1260 if (!string_vformat(buffer
, sizeof(buffer
), CS format
, ap
))
1261 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
1262 "common_error expansion was longer than " SIZE_T_FMT
, sizeof(buffer
));
1264 addr
->message
= string_copy(buffer
);
1267 for (addr2
= addr
->next
; addr2
!= NULL
; addr2
= addr2
->next
)
1269 addr2
->basic_errno
= code
;
1270 addr2
->message
= addr
->message
;
1273 if (logit
) log_write(0, LOG_MAIN
|LOG_PANIC
, "%s", addr
->message
);
1274 deliver_set_expansions(NULL
);
1280 /*************************************************
1281 * Check a "never users" list *
1282 *************************************************/
1284 /* This function is called to check whether a uid is on one of the two "never
1288 uid the uid to be checked
1289 nusers the list to be scanned; the first item in the list is the count
1291 Returns: TRUE if the uid is on the list
1295 check_never_users(uid_t uid
, uid_t
*nusers
)
1298 if (nusers
== NULL
) return FALSE
;
1299 for (i
= 1; i
<= (int)(nusers
[0]); i
++) if (nusers
[i
] == uid
) return TRUE
;
1305 /*************************************************
1306 * Find uid and gid for a transport *
1307 *************************************************/
1309 /* This function is called for both local and remote deliveries, to find the
1310 uid/gid under which to run the delivery. The values are taken preferentially
1311 from the transport (either explicit or deliver_as_creator), then from the
1312 address (i.e. the router), and if nothing is set, the exim uid/gid are used. If
1313 the resulting uid is on the "never_users" or the "fixed_never_users" list, a
1314 panic error is logged, and the function fails (which normally leads to delivery
1318 addr the address (possibly a chain)
1320 uidp pointer to uid field
1321 gidp pointer to gid field
1322 igfp pointer to the use_initgroups field
1324 Returns: FALSE if failed - error has been set in address(es)
1328 findugid(address_item
*addr
, transport_instance
*tp
, uid_t
*uidp
, gid_t
*gidp
,
1331 uschar
*nuname
= NULL
;
1332 BOOL gid_set
= FALSE
;
1334 /* Default initgroups flag comes from the transport */
1336 *igfp
= tp
->initgroups
;
1338 /* First see if there's a gid on the transport, either fixed or expandable.
1339 The expanding function always logs failure itself. */
1346 else if (tp
->expand_gid
!= NULL
)
1348 if (route_find_expanded_group(tp
->expand_gid
, tp
->name
, US
"transport", gidp
,
1349 &(addr
->message
))) gid_set
= TRUE
;
1352 common_error(FALSE
, addr
, ERRNO_GIDFAIL
, NULL
);
1357 /* If the transport did not set a group, see if the router did. */
1359 if (!gid_set
&& testflag(addr
, af_gid_set
))
1365 /* Pick up a uid from the transport if one is set. */
1367 if (tp
->uid_set
) *uidp
= tp
->uid
;
1369 /* Otherwise, try for an expandable uid field. If it ends up as a numeric id,
1370 it does not provide a passwd value from which a gid can be taken. */
1372 else if (tp
->expand_uid
!= NULL
)
1375 if (!route_find_expanded_user(tp
->expand_uid
, tp
->name
, US
"transport", &pw
,
1376 uidp
, &(addr
->message
)))
1378 common_error(FALSE
, addr
, ERRNO_UIDFAIL
, NULL
);
1381 if (!gid_set
&& pw
!= NULL
)
1388 /* If the transport doesn't set the uid, test the deliver_as_creator flag. */
1390 else if (tp
->deliver_as_creator
)
1392 *uidp
= originator_uid
;
1395 *gidp
= originator_gid
;
1400 /* Otherwise see if the address specifies the uid and if so, take it and its
1403 else if (testflag(addr
, af_uid_set
))
1406 *igfp
= testflag(addr
, af_initgroups
);
1409 /* Nothing has specified the uid - default to the Exim user, and group if the
1422 /* If no gid is set, it is a disaster. We default to the Exim gid only if
1423 defaulting to the Exim uid. In other words, if the configuration has specified
1424 a uid, it must also provide a gid. */
1428 common_error(TRUE
, addr
, ERRNO_GIDFAIL
, US
"User set without group for "
1429 "%s transport", tp
->name
);
1433 /* Check that the uid is not on the lists of banned uids that may not be used
1434 for delivery processes. */
1436 if (check_never_users(*uidp
, never_users
))
1437 nuname
= US
"never_users";
1438 else if (check_never_users(*uidp
, fixed_never_users
))
1439 nuname
= US
"fixed_never_users";
1443 common_error(TRUE
, addr
, ERRNO_UIDFAIL
, US
"User %ld set for %s transport "
1444 "is on the %s list", (long int)(*uidp
), tp
->name
, nuname
);
1456 /*************************************************
1457 * Check the size of a message for a transport *
1458 *************************************************/
1460 /* Checks that the message isn't too big for the selected transport.
1461 This is called only when it is known that the limit is set.
1465 addr the (first) address being delivered
1468 DEFER expansion failed or did not yield an integer
1469 FAIL message too big
1473 check_message_size(transport_instance
*tp
, address_item
*addr
)
1478 deliver_set_expansions(addr
);
1479 size_limit
= expand_string_integer(tp
->message_size_limit
, TRUE
);
1480 deliver_set_expansions(NULL
);
1482 if (expand_string_message
!= NULL
)
1485 if (size_limit
== -1)
1486 addr
->message
= string_sprintf("failed to expand message_size_limit "
1487 "in %s transport: %s", tp
->name
, expand_string_message
);
1489 addr
->message
= string_sprintf("invalid message_size_limit "
1490 "in %s transport: %s", tp
->name
, expand_string_message
);
1492 else if (size_limit
> 0 && message_size
> size_limit
)
1496 string_sprintf("message is too big (transport limit = %d)",
1505 /*************************************************
1506 * Transport-time check for a previous delivery *
1507 *************************************************/
1509 /* Check that this base address hasn't previously been delivered to its routed
1510 transport. If it has been delivered, mark it done. The check is necessary at
1511 delivery time in order to handle homonymic addresses correctly in cases where
1512 the pattern of redirection changes between delivery attempts (so the unique
1513 fields change). Non-homonymic previous delivery is detected earlier, at routing
1514 time (which saves unnecessary routing).
1517 addr the address item
1518 testing TRUE if testing wanted only, without side effects
1520 Returns: TRUE if previously delivered by the transport
1524 previously_transported(address_item
*addr
, BOOL testing
)
1526 (void)string_format(big_buffer
, big_buffer_size
, "%s/%s",
1527 addr
->unique
+ (testflag(addr
, af_homonym
)? 3:0), addr
->transport
->name
);
1529 if (tree_search(tree_nonrecipients
, big_buffer
) != 0)
1531 DEBUG(D_deliver
|D_route
|D_transport
)
1532 debug_printf("%s was previously delivered (%s transport): discarded\n",
1533 addr
->address
, addr
->transport
->name
);
1534 if (!testing
) child_done(addr
, tod_stamp(tod_log
));
1543 /******************************************************
1544 * Check for a given header in a header string *
1545 ******************************************************/
1547 /* This function is used when generating quota warnings. The configuration may
1548 specify any header lines it likes in quota_warn_message. If certain of them are
1549 missing, defaults are inserted, so we need to be able to test for the presence
1553 hdr the required header name
1554 hstring the header string
1556 Returns: TRUE the header is in the string
1557 FALSE the header is not in the string
1561 contains_header(uschar
*hdr
, uschar
*hstring
)
1563 int len
= Ustrlen(hdr
);
1564 uschar
*p
= hstring
;
1567 if (strncmpic(p
, hdr
, len
) == 0)
1570 while (*p
== ' ' || *p
== '\t') p
++;
1571 if (*p
== ':') return TRUE
;
1573 while (*p
!= 0 && *p
!= '\n') p
++;
1574 if (*p
== '\n') p
++;
1582 /*************************************************
1583 * Perform a local delivery *
1584 *************************************************/
1586 /* Each local delivery is performed in a separate process which sets its
1587 uid and gid as specified. This is a safer way than simply changing and
1588 restoring using seteuid(); there is a body of opinion that seteuid() cannot be
1589 used safely. From release 4, Exim no longer makes any use of it. Besides, not
1590 all systems have seteuid().
1592 If the uid/gid are specified in the transport_instance, they are used; the
1593 transport initialization must ensure that either both or neither are set.
1594 Otherwise, the values associated with the address are used. If neither are set,
1595 it is a configuration error.
1597 The transport or the address may specify a home directory (transport over-
1598 rides), and if they do, this is set as $home. If neither have set a working
1599 directory, this value is used for that as well. Otherwise $home is left unset
1600 and the cwd is set to "/" - a directory that should be accessible to all users.
1602 Using a separate process makes it more complicated to get error information
1603 back. We use a pipe to pass the return code and also an error code and error
1604 text string back to the parent process.
1607 addr points to an address block for this delivery; for "normal" local
1608 deliveries this is the only address to be delivered, but for
1609 pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe)
1610 a number of addresses can be handled simultaneously, and in this
1611 case addr will point to a chain of addresses with the same
1614 shadowing TRUE if running a shadow transport; this causes output from pipes
1621 deliver_local(address_item
*addr
, BOOL shadowing
)
1623 BOOL use_initgroups
;
1626 int status
, len
, rc
;
1629 uschar
*working_directory
;
1630 address_item
*addr2
;
1631 transport_instance
*tp
= addr
->transport
;
1633 /* Set up the return path from the errors or sender address. If the transport
1634 has its own return path setting, expand it and replace the existing value. */
1636 if(addr
->p
.errors_address
!= NULL
)
1637 return_path
= addr
->p
.errors_address
;
1638 #ifdef EXPERIMENTAL_SRS
1639 else if(addr
->p
.srs_sender
!= NULL
)
1640 return_path
= addr
->p
.srs_sender
;
1643 return_path
= sender_address
;
1645 if (tp
->return_path
!= NULL
)
1647 uschar
*new_return_path
= expand_string(tp
->return_path
);
1648 if (new_return_path
== NULL
)
1650 if (!expand_string_forcedfail
)
1652 common_error(TRUE
, addr
, ERRNO_EXPANDFAIL
,
1653 US
"Failed to expand return path \"%s\" in %s transport: %s",
1654 tp
->return_path
, tp
->name
, expand_string_message
);
1658 else return_path
= new_return_path
;
1661 /* For local deliveries, one at a time, the value used for logging can just be
1662 set directly, once and for all. */
1664 used_return_path
= return_path
;
1666 /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message
1667 gets put into the address(es), and the expansions are unset, so we can just
1670 if (!findugid(addr
, tp
, &uid
, &gid
, &use_initgroups
)) return;
1672 /* See if either the transport or the address specifies a home directory. A
1673 home directory set in the address may already be expanded; a flag is set to
1674 indicate that. In other cases we must expand it. */
1676 if ((deliver_home
= tp
->home_dir
) != NULL
|| /* Set in transport, or */
1677 ((deliver_home
= addr
->home_dir
) != NULL
&& /* Set in address and */
1678 !testflag(addr
, af_home_expanded
))) /* not expanded */
1680 uschar
*rawhome
= deliver_home
;
1681 deliver_home
= NULL
; /* in case it contains $home */
1682 deliver_home
= expand_string(rawhome
);
1683 if (deliver_home
== NULL
)
1685 common_error(TRUE
, addr
, ERRNO_EXPANDFAIL
, US
"home directory \"%s\" failed "
1686 "to expand for %s transport: %s", rawhome
, tp
->name
,
1687 expand_string_message
);
1690 if (*deliver_home
!= '/')
1692 common_error(TRUE
, addr
, ERRNO_NOTABSOLUTE
, US
"home directory path \"%s\" "
1693 "is not absolute for %s transport", deliver_home
, tp
->name
);
1698 /* See if either the transport or the address specifies a current directory,
1699 and if so, expand it. If nothing is set, use the home directory, unless it is
1700 also unset in which case use "/", which is assumed to be a directory to which
1701 all users have access. It is necessary to be in a visible directory for some
1702 operating systems when running pipes, as some commands (e.g. "rm" under Solaris
1703 2.5) require this. */
1705 working_directory
= (tp
->current_dir
!= NULL
)?
1706 tp
->current_dir
: addr
->current_dir
;
1708 if (working_directory
!= NULL
)
1710 uschar
*raw
= working_directory
;
1711 working_directory
= expand_string(raw
);
1712 if (working_directory
== NULL
)
1714 common_error(TRUE
, addr
, ERRNO_EXPANDFAIL
, US
"current directory \"%s\" "
1715 "failed to expand for %s transport: %s", raw
, tp
->name
,
1716 expand_string_message
);
1719 if (*working_directory
!= '/')
1721 common_error(TRUE
, addr
, ERRNO_NOTABSOLUTE
, US
"current directory path "
1722 "\"%s\" is not absolute for %s transport", working_directory
, tp
->name
);
1726 else working_directory
= (deliver_home
== NULL
)? US
"/" : deliver_home
;
1728 /* If one of the return_output flags is set on the transport, create and open a
1729 file in the message log directory for the transport to write its output onto.
1730 This is mainly used by pipe transports. The file needs to be unique to the
1731 address. This feature is not available for shadow transports. */
1733 if (!shadowing
&& (tp
->return_output
|| tp
->return_fail_output
||
1734 tp
->log_output
|| tp
->log_fail_output
))
1737 addr
->return_filename
=
1738 string_sprintf("%s/msglog/%s/%s-%d-%d", spool_directory
, message_subdir
,
1739 message_id
, getpid(), return_count
++);
1740 addr
->return_file
= open_msglog_file(addr
->return_filename
, 0400, &error
);
1741 if (addr
->return_file
< 0)
1743 common_error(TRUE
, addr
, errno
, US
"Unable to %s file for %s transport "
1744 "to return message: %s", error
, tp
->name
, strerror(errno
));
1749 /* Create the pipe for inter-process communication. */
1753 common_error(TRUE
, addr
, ERRNO_PIPEFAIL
, US
"Creation of pipe failed: %s",
1758 /* Now fork the process to do the real work in the subprocess, but first
1759 ensure that all cached resources are freed so that the subprocess starts with
1760 a clean slate and doesn't interfere with the parent process. */
1764 if ((pid
= fork()) == 0)
1766 BOOL replicate
= TRUE
;
1768 /* Prevent core dumps, as we don't want them in users' home directories.
1769 HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that
1770 system. Some experimental/developing systems (e.g. GNU/Hurd) may define
1771 RLIMIT_CORE but not support it in setrlimit(). For such systems, do not
1772 complain if the error is "not supported".
1774 There are two scenarios where changing the max limit has an effect. In one,
1775 the user is using a .forward and invoking a command of their choice via pipe;
1776 for these, we do need the max limit to be 0 unless the admin chooses to
1777 permit an increased limit. In the other, the command is invoked directly by
1778 the transport and is under administrator control, thus being able to raise
1779 the limit aids in debugging. So there's no general always-right answer.
1781 Thus we inhibit core-dumps completely but let individual transports, while
1782 still root, re-raise the limits back up to aid debugging. We make the
1783 default be no core-dumps -- few enough people can use core dumps in
1784 diagnosis that it's reasonable to make them something that has to be explicitly requested.
1791 if (setrlimit(RLIMIT_CORE
, &rl
) < 0)
1793 #ifdef SETRLIMIT_NOT_SUPPORTED
1794 if (errno
!= ENOSYS
&& errno
!= ENOTSUP
)
1796 log_write(0, LOG_MAIN
|LOG_PANIC
, "setrlimit(RLIMIT_CORE) failed: %s",
1801 /* Reset the random number generator, so different processes don't all
1802 have the same sequence. */
1806 /* If the transport has a setup entry, call this first, while still
1807 privileged. (Appendfile uses this to expand quota, for example, while
1808 able to read private files.) */
1810 if (addr
->transport
->setup
!= NULL
)
1812 switch((addr
->transport
->setup
)(addr
->transport
, addr
, NULL
, uid
, gid
,
1816 addr
->transport_return
= DEFER
;
1820 addr
->transport_return
= PANIC
;
1825 /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as
1826 when the process becomes unprivileged, it won't be able to write to the
1827 process log. SIGHUP is ignored throughout exim, except when it is being
1830 signal(SIGINT
, SIG_IGN
);
1831 signal(SIGTERM
, SIG_IGN
);
1832 signal(SIGUSR1
, SIG_IGN
);
1834 /* Close the unwanted half of the pipe, and set close-on-exec for the other
1835 half - for transports that exec things (e.g. pipe). Then set the required
1838 (void)close(pfd
[pipe_read
]);
1839 (void)fcntl(pfd
[pipe_write
], F_SETFD
, fcntl(pfd
[pipe_write
], F_GETFD
) |
1841 exim_setugid(uid
, gid
, use_initgroups
,
1842 string_sprintf("local delivery to %s <%s> transport=%s", addr
->local_part
,
1843 addr
->address
, addr
->transport
->name
));
1847 address_item
*batched
;
1848 debug_printf(" home=%s current=%s\n", deliver_home
, working_directory
);
1849 for (batched
= addr
->next
; batched
!= NULL
; batched
= batched
->next
)
1850 debug_printf("additional batched address: %s\n", batched
->address
);
1853 /* Set an appropriate working directory. */
1855 if (Uchdir(working_directory
) < 0)
1857 addr
->transport_return
= DEFER
;
1858 addr
->basic_errno
= errno
;
1859 addr
->message
= string_sprintf("failed to chdir to %s", working_directory
);
1862 /* If successful, call the transport */
1867 set_process_info("delivering %s to %s using %s", message_id
,
1868 addr
->local_part
, addr
->transport
->name
);
1870 /* If a transport filter has been specified, set up its argument list.
1871 Any errors will get put into the address, and FALSE yielded. */
1873 if (addr
->transport
->filter_command
!= NULL
)
1875 ok
= transport_set_up_command(&transport_filter_argv
,
1876 addr
->transport
->filter_command
,
1877 TRUE
, PANIC
, addr
, US
"transport filter", NULL
);
1878 transport_filter_timeout
= addr
->transport
->filter_timeout
;
1880 else transport_filter_argv
= NULL
;
1884 debug_print_string(addr
->transport
->debug_string
);
1885 replicate
= !(addr
->transport
->info
->code
)(addr
->transport
, addr
);
1889 /* Pass the results back down the pipe. If necessary, first replicate the
1890 status in the top address to the others in the batch. The label is the
1891 subject of a goto when a call to the transport's setup function fails. We
1892 pass the pointer to the transport back in case it got changed as a result of
1893 file_format in appendfile. */
1897 if (replicate
) replicate_status(addr
);
1898 for (addr2
= addr
; addr2
!= NULL
; addr2
= addr2
->next
)
1901 int local_part_length
= Ustrlen(addr2
->local_part
);
1904 (void)write(pfd
[pipe_write
], (void *)&(addr2
->transport_return
), sizeof(int));
1905 (void)write(pfd
[pipe_write
], (void *)&transport_count
, sizeof(transport_count
));
1906 (void)write(pfd
[pipe_write
], (void *)&(addr2
->flags
), sizeof(addr2
->flags
));
1907 (void)write(pfd
[pipe_write
], (void *)&(addr2
->basic_errno
), sizeof(int));
1908 (void)write(pfd
[pipe_write
], (void *)&(addr2
->more_errno
), sizeof(int));
1909 (void)write(pfd
[pipe_write
], (void *)&(addr2
->special_action
), sizeof(int));
1910 (void)write(pfd
[pipe_write
], (void *)&(addr2
->transport
),
1911 sizeof(transport_instance
*));
1913 /* For a file delivery, pass back the local part, in case the original
1914 was only part of the final delivery path. This gives more complete
1917 if (testflag(addr2
, af_file
))
1919 (void)write(pfd
[pipe_write
], (void *)&local_part_length
, sizeof(int));
1920 (void)write(pfd
[pipe_write
], addr2
->local_part
, local_part_length
);
1923 /* Now any messages */
1925 for (i
= 0, s
= addr2
->message
; i
< 2; i
++, s
= addr2
->user_message
)
1927 int message_length
= (s
== NULL
)? 0 : Ustrlen(s
) + 1;
1928 (void)write(pfd
[pipe_write
], (void *)&message_length
, sizeof(int));
1929 if (message_length
> 0) (void)write(pfd
[pipe_write
], s
, message_length
);
1933 /* OK, this process is now done. Free any cached resources that it opened,
1934 and close the pipe we were writing down before exiting. */
1936 (void)close(pfd
[pipe_write
]);
1941 /* Back in the main process: panic if the fork did not succeed. This seems
1942 better than returning an error - if forking is failing it is probably best
1943 not to try other deliveries for this message. */
1946 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Fork failed for local delivery to %s",
1949 /* Read the pipe to get the delivery status codes and error messages. Our copy
1950 of the writing end must be closed first, as otherwise read() won't return zero
1951 on an empty pipe. We check that a status exists for each address before
1952 overwriting the address structure. If data is missing, the default DEFER status
1953 will remain. Afterwards, close the reading end. */
1955 (void)close(pfd
[pipe_write
]);
1957 for (addr2
= addr
; addr2
!= NULL
; addr2
= addr2
->next
)
1959 len
= read(pfd
[pipe_read
], (void *)&status
, sizeof(int));
1965 addr2
->transport_return
= status
;
1966 len
= read(pfd
[pipe_read
], (void *)&transport_count
,
1967 sizeof(transport_count
));
1968 len
= read(pfd
[pipe_read
], (void *)&(addr2
->flags
), sizeof(addr2
->flags
));
1969 len
= read(pfd
[pipe_read
], (void *)&(addr2
->basic_errno
), sizeof(int));
1970 len
= read(pfd
[pipe_read
], (void *)&(addr2
->more_errno
), sizeof(int));
1971 len
= read(pfd
[pipe_read
], (void *)&(addr2
->special_action
), sizeof(int));
1972 len
= read(pfd
[pipe_read
], (void *)&(addr2
->transport
),
1973 sizeof(transport_instance
*));
1975 if (testflag(addr2
, af_file
))
1977 int local_part_length
;
1978 len
= read(pfd
[pipe_read
], (void *)&local_part_length
, sizeof(int));
1979 len
= read(pfd
[pipe_read
], (void *)big_buffer
, local_part_length
);
1980 big_buffer
[local_part_length
] = 0;
1981 addr2
->local_part
= string_copy(big_buffer
);
1984 for (i
= 0, sptr
= &(addr2
->message
); i
< 2;
1985 i
++, sptr
= &(addr2
->user_message
))
1988 len
= read(pfd
[pipe_read
], (void *)&message_length
, sizeof(int));
1989 if (message_length
> 0)
1991 len
= read(pfd
[pipe_read
], (void *)big_buffer
, message_length
);
1992 if (len
> 0) *sptr
= string_copy(big_buffer
);
1999 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to read delivery status for %s "
2000 "from delivery subprocess", addr2
->unique
);
2005 (void)close(pfd
[pipe_read
]);
2007 /* Unless shadowing, write all successful addresses immediately to the journal
2008 file, to ensure they are recorded asap. For homonymic addresses, use the base
2009 address plus the transport name. Failure to write the journal is panic-worthy,
2010 but don't stop, as it may prove possible subsequently to update the spool file
2011 in order to record the delivery. */
2015 for (addr2
= addr
; addr2
!= NULL
; addr2
= addr2
->next
)
2017 if (addr2
->transport_return
!= OK
) continue;
2019 if (testflag(addr2
, af_homonym
))
2020 sprintf(CS big_buffer
, "%.500s/%s\n", addr2
->unique
+ 3, tp
->name
);
2022 sprintf(CS big_buffer
, "%.500s\n", addr2
->unique
);
2024 /* In the test harness, wait just a bit to let the subprocess finish off
2025 any debug output etc first. */
2027 if (running_in_test_harness
) millisleep(300);
2029 DEBUG(D_deliver
) debug_printf("journalling %s", big_buffer
);
2030 len
= Ustrlen(big_buffer
);
2031 if (write(journal_fd
, big_buffer
, len
) != len
)
2032 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to update journal for %s: %s",
2033 big_buffer
, strerror(errno
));
2036 /* Ensure the journal file is pushed out to disk. */
2038 if (EXIMfsync(journal_fd
) < 0)
2039 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to fsync journal: %s",
2043 /* Wait for the process to finish. If it terminates with a non-zero code,
2044 freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the
2045 status values of all the addresses as they are. Take care to handle the case
2046 when the subprocess doesn't seem to exist. This has been seen on one system
2047 when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that
2048 happens, wait() doesn't recognize the termination of child processes. Exim now
2049 resets SIGCHLD to SIG_DFL, but this code should still be robust. */
2051 while ((rc
= wait(&status
)) != pid
)
2053 if (rc
< 0 && errno
== ECHILD
) /* Process has vanished */
2055 log_write(0, LOG_MAIN
, "%s transport process vanished unexpectedly",
2056 addr
->transport
->driver_name
);
2062 if ((status
& 0xffff) != 0)
2064 int msb
= (status
>> 8) & 255;
2065 int lsb
= status
& 255;
2066 int code
= (msb
== 0)? (lsb
& 0x7f) : msb
;
2067 if (msb
!= 0 || (code
!= SIGTERM
&& code
!= SIGKILL
&& code
!= SIGQUIT
))
2068 addr
->special_action
= SPECIAL_FREEZE
;
2069 log_write(0, LOG_MAIN
|LOG_PANIC
, "%s transport process returned non-zero "
2070 "status 0x%04x: %s %d",
2071 addr
->transport
->driver_name
,
2073 (msb
== 0)? "terminated by signal" : "exit code",
2077 /* If SPECIAL_WARN is set in the top address, send a warning message. */
2079 if (addr
->special_action
== SPECIAL_WARN
&&
2080 addr
->transport
->warn_message
!= NULL
)
2083 uschar
*warn_message
;
2085 DEBUG(D_deliver
) debug_printf("Warning message requested by transport\n");
2087 warn_message
= expand_string(addr
->transport
->warn_message
);
2088 if (warn_message
== NULL
)
2089 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand \"%s\" (warning "
2090 "message for %s transport): %s", addr
->transport
->warn_message
,
2091 addr
->transport
->name
, expand_string_message
);
2094 pid_t pid
= child_open_exim(&fd
);
2097 FILE *f
= fdopen(fd
, "wb");
2098 if (errors_reply_to
!= NULL
&&
2099 !contains_header(US
"Reply-To", warn_message
))
2100 fprintf(f
, "Reply-To: %s\n", errors_reply_to
);
2101 fprintf(f
, "Auto-Submitted: auto-replied\n");
2102 if (!contains_header(US
"From", warn_message
)) moan_write_from(f
);
2103 fprintf(f
, "%s", CS warn_message
);
2105 /* Close and wait for child process to complete, without a timeout. */
2108 (void)child_close(pid
, 0);
2112 addr
->special_action
= SPECIAL_NONE
;
2118 /*************************************************
2119 * Do local deliveries *
2120 *************************************************/
2122 /* This function processes the list of addresses in addr_local. True local
2123 deliveries are always done one address at a time. However, local deliveries can
2124 be batched up in some cases. Typically this is when writing batched SMTP output
2125 files for use by some external transport mechanism, or when running local
2126 deliveries over LMTP.
2133 do_local_deliveries(void)
2136 open_db
*dbm_file
= NULL
;
2137 time_t now
= time(NULL
);
2139 /* Loop until we have exhausted the supply of local deliveries */
2141 while (addr_local
!= NULL
)
2143 time_t delivery_start
;
2145 address_item
*addr2
, *addr3
, *nextaddr
;
2146 int logflags
= LOG_MAIN
;
2147 int logchar
= dont_deliver
? '*' : '=';
2148 transport_instance
*tp
;
2150 /* Pick the first undelivered address off the chain */
2152 address_item
*addr
= addr_local
;
2153 addr_local
= addr
->next
;
2156 DEBUG(D_deliver
|D_transport
)
2157 debug_printf("--------> %s <--------\n", addr
->address
);
2159 /* An internal disaster if there is no transport. Should not occur! */
2161 if ((tp
= addr
->transport
) == NULL
)
2163 logflags
|= LOG_PANIC
;
2164 disable_logging
= FALSE
; /* Jic */
2166 (addr
->router
!= NULL
)?
2167 string_sprintf("No transport set by %s router", addr
->router
->name
)
2169 string_sprintf("No transport set by system filter");
2170 post_process_one(addr
, DEFER
, logflags
, DTYPE_TRANSPORT
, 0);
2174 /* Check that this base address hasn't previously been delivered to this
2175 transport. The check is necessary at this point to handle homonymic addresses
2176 correctly in cases where the pattern of redirection changes between delivery
2177 attempts. Non-homonymic previous delivery is detected earlier, at routing
2180 if (previously_transported(addr
, FALSE
)) continue;
2182 /* There are weird cases where logging is disabled */
2184 disable_logging
= tp
->disable_logging
;
2186 /* Check for batched addresses and possible amalgamation. Skip all the work
2187 if either batch_max <= 1 or there aren't any other addresses for local
2190 if (tp
->batch_max
> 1 && addr_local
!= NULL
)
2192 int batch_count
= 1;
2193 BOOL uses_dom
= readconf_depends((driver_instance
*)tp
, US
"domain");
2194 BOOL uses_lp
= (testflag(addr
, af_pfr
) &&
2195 (testflag(addr
, af_file
) || addr
->local_part
[0] == '|')) ||
2196 readconf_depends((driver_instance
*)tp
, US
"local_part");
2197 uschar
*batch_id
= NULL
;
2198 address_item
**anchor
= &addr_local
;
2199 address_item
*last
= addr
;
2202 /* Expand the batch_id string for comparison with other addresses.
2203 Expansion failure suppresses batching. */
2205 if (tp
->batch_id
!= NULL
)
2207 deliver_set_expansions(addr
);
2208 batch_id
= expand_string(tp
->batch_id
);
2209 deliver_set_expansions(NULL
);
2210 if (batch_id
== NULL
)
2212 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand batch_id option "
2213 "in %s transport (%s): %s", tp
->name
, addr
->address
,
2214 expand_string_message
);
2215 batch_count
= tp
->batch_max
;
2219 /* Until we reach the batch_max limit, pick off addresses which have the
2220 same characteristics. These are:
2223 not previously delivered (see comment about 50 lines above)
2224 same local part if the transport's configuration contains $local_part
2225 or if this is a file or pipe delivery from a redirection
2226 same domain if the transport's configuration contains $domain
2228 same additional headers
2229 same headers to be removed
2230 same uid/gid for running the transport
2231 same first host if a host list is set
2234 while ((next
= *anchor
) != NULL
&& batch_count
< tp
->batch_max
)
2237 tp
== next
->transport
&&
2238 !previously_transported(next
, TRUE
) &&
2239 (addr
->flags
& (af_pfr
|af_file
)) == (next
->flags
& (af_pfr
|af_file
)) &&
2240 (!uses_lp
|| Ustrcmp(next
->local_part
, addr
->local_part
) == 0) &&
2241 (!uses_dom
|| Ustrcmp(next
->domain
, addr
->domain
) == 0) &&
2242 same_strings(next
->p
.errors_address
, addr
->p
.errors_address
) &&
2243 same_headers(next
->p
.extra_headers
, addr
->p
.extra_headers
) &&
2244 same_strings(next
->p
.remove_headers
, addr
->p
.remove_headers
) &&
2245 same_ugid(tp
, addr
, next
) &&
2246 ((addr
->host_list
== NULL
&& next
->host_list
== NULL
) ||
2247 (addr
->host_list
!= NULL
&& next
->host_list
!= NULL
&&
2248 Ustrcmp(addr
->host_list
->name
, next
->host_list
->name
) == 0));
2250 /* If the transport has a batch_id setting, batch_id will be non-NULL
2251 from the expansion outside the loop. Expand for this address and compare.
2252 Expansion failure makes this address ineligible for batching. */
2254 if (ok
&& batch_id
!= NULL
)
2257 address_item
*save_nextnext
= next
->next
;
2258 next
->next
= NULL
; /* Expansion for a single address */
2259 deliver_set_expansions(next
);
2260 next
->next
= save_nextnext
;
2261 bid
= expand_string(tp
->batch_id
);
2262 deliver_set_expansions(NULL
);
2265 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand batch_id option "
2266 "in %s transport (%s): %s", tp
->name
, next
->address
,
2267 expand_string_message
);
2270 else ok
= (Ustrcmp(batch_id
, bid
) == 0);
2273 /* Take address into batch if OK. */
2277 *anchor
= next
->next
; /* Include the address */
2283 else anchor
= &(next
->next
); /* Skip the address */
2287 /* We now have one or more addresses that can be delivered in a batch. Check
2288 whether the transport is prepared to accept a message of this size. If not,
2289 fail them all forthwith. If the expansion fails, or does not yield an
2290 integer, defer delivery. */
2292 if (tp
->message_size_limit
!= NULL
)
2294 int rc
= check_message_size(tp
, addr
);
2297 replicate_status(addr
);
2298 while (addr
!= NULL
)
2301 post_process_one(addr
, rc
, logflags
, DTYPE_TRANSPORT
, 0);
2304 continue; /* With next batch of addresses */
2308 /* If we are not running the queue, or if forcing, all deliveries will be
2309 attempted. Otherwise, we must respect the retry times for each address. Even
2310 when not doing this, we need to set up the retry key string, and determine
2311 whether a retry record exists, because after a successful delivery, a delete
2312 retry item must be set up. Keep the retry database open only for the duration
2313 of these checks, rather than for all local deliveries, because some local
2314 deliveries (e.g. to pipes) can take a substantial time. */
2316 dbm_file
= dbfn_open(US
"retry", O_RDONLY
, &dbblock
, FALSE
);
2317 if (dbm_file
== NULL
)
2319 DEBUG(D_deliver
|D_retry
|D_hints_lookup
)
2320 debug_printf("no retry data available\n");
2325 while (addr2
!= NULL
)
2327 BOOL ok
= TRUE
; /* to deliver this address */
2330 /* Set up the retry key to include the domain or not, and change its
2331 leading character from "R" to "T". Must make a copy before doing this,
2332 because the old key may be pointed to from a "delete" retry item after
2335 retry_key
= string_copy(
2336 (tp
->retry_use_local_part
)? addr2
->address_retry_key
:
2337 addr2
->domain_retry_key
);
2340 /* Inspect the retry data. If there is no hints file, delivery happens. */
2342 if (dbm_file
!= NULL
)
2344 dbdata_retry
*retry_record
= dbfn_read(dbm_file
, retry_key
);
2346 /* If there is no retry record, delivery happens. If there is,
2347 remember it exists so it can be deleted after a successful delivery. */
2349 if (retry_record
!= NULL
)
2351 setflag(addr2
, af_lt_retry_exists
);
2353 /* A retry record exists for this address. If queue running and not
2354 forcing, inspect its contents. If the record is too old, or if its
2355 retry time has come, or if it has passed its cutoff time, delivery
2360 debug_printf("retry record exists: age=%s ",
2361 readconf_printtime(now
- retry_record
->time_stamp
));
2362 debug_printf("(max %s)\n", readconf_printtime(retry_data_expire
));
2363 debug_printf(" time to retry = %s expired = %d\n",
2364 readconf_printtime(retry_record
->next_try
- now
),
2365 retry_record
->expired
);
2368 if (queue_running
&& !deliver_force
)
2370 ok
= (now
- retry_record
->time_stamp
> retry_data_expire
) ||
2371 (now
>= retry_record
->next_try
) ||
2372 retry_record
->expired
;
2374 /* If we haven't reached the retry time, there is one more check
2375 to do, which is for the ultimate address timeout. */
2379 retry_config
*retry
=
2380 retry_find_config(retry_key
+2, addr2
->domain
,
2381 retry_record
->basic_errno
,
2382 retry_record
->more_errno
);
2384 DEBUG(D_deliver
|D_retry
)
2386 debug_printf("retry time not reached for %s: "
2387 "checking ultimate address timeout\n", addr2
->address
);
2388 debug_printf(" now=%d first_failed=%d next_try=%d expired=%d\n",
2389 (int)now
, (int)retry_record
->first_failed
,
2390 (int)retry_record
->next_try
, retry_record
->expired
);
2393 if (retry
!= NULL
&& retry
->rules
!= NULL
)
2395 retry_rule
*last_rule
;
2396 for (last_rule
= retry
->rules
;
2397 last_rule
->next
!= NULL
;
2398 last_rule
= last_rule
->next
);
2399 DEBUG(D_deliver
|D_retry
)
2400 debug_printf(" received_time=%d diff=%d timeout=%d\n",
2401 received_time
, (int)now
- received_time
, last_rule
->timeout
);
2402 if (now
- received_time
> last_rule
->timeout
) ok
= TRUE
;
2406 DEBUG(D_deliver
|D_retry
)
2407 debug_printf("no retry rule found: assume timed out\n");
2408 ok
= TRUE
; /* No rule => timed out */
2411 DEBUG(D_deliver
|D_retry
)
2413 if (ok
) debug_printf("on queue longer than maximum retry for "
2414 "address - allowing delivery\n");
2419 else DEBUG(D_retry
) debug_printf("no retry record exists\n");
2422 /* This address is to be delivered. Leave it on the chain. */
2427 addr2
= addr2
->next
;
2430 /* This address is to be deferred. Take it out of the chain, and
2431 post-process it as complete. Must take it out of the chain first,
2432 because post processing puts it on another chain. */
2436 address_item
*this = addr2
;
2437 this->message
= US
"Retry time not yet reached";
2438 this->basic_errno
= ERRNO_LRETRY
;
2439 if (addr3
== NULL
) addr2
= addr
= addr2
->next
;
2440 else addr2
= addr3
->next
= addr2
->next
;
2441 post_process_one(this, DEFER
, logflags
, DTYPE_TRANSPORT
, 0);
2445 if (dbm_file
!= NULL
) dbfn_close(dbm_file
);
2447 /* If there are no addresses left on the chain, they all deferred. Loop
2448 for the next set of addresses. */
2450 if (addr
== NULL
) continue;
2452 /* So, finally, we do have some addresses that can be passed to the
2453 transport. Before doing so, set up variables that are relevant to a
2456 deliver_set_expansions(addr
);
2457 delivery_start
= time(NULL
);
2458 deliver_local(addr
, FALSE
);
2459 deliver_time
= (int)(time(NULL
) - delivery_start
);
2461 /* If a shadow transport (which must perforce be another local transport), is
2462 defined, and its condition is met, we must pass the message to the shadow
2463 too, but only those addresses that succeeded. We do this by making a new
2464 chain of addresses - also to keep the original chain uncontaminated. We must
2465 use a chain rather than doing it one by one, because the shadow transport may
2468 NOTE: if the condition fails because of a lookup defer, there is nothing we
2471 if (tp
->shadow
!= NULL
&&
2472 (tp
->shadow_condition
== NULL
||
2473 expand_check_condition(tp
->shadow_condition
, tp
->name
, US
"transport")))
2475 transport_instance
*stp
;
2476 address_item
*shadow_addr
= NULL
;
2477 address_item
**last
= &shadow_addr
;
2479 for (stp
= transports
; stp
!= NULL
; stp
= stp
->next
)
2480 if (Ustrcmp(stp
->name
, tp
->shadow
) == 0) break;
2483 log_write(0, LOG_MAIN
|LOG_PANIC
, "shadow transport \"%s\" not found ",
2486 /* Pick off the addresses that have succeeded, and make clones. Put into
2487 the shadow_message field a pointer to the shadow_message field of the real
2490 else for (addr2
= addr
; addr2
!= NULL
; addr2
= addr2
->next
)
2492 if (addr2
->transport_return
!= OK
) continue;
2493 addr3
= store_get(sizeof(address_item
));
2496 addr3
->shadow_message
= (uschar
*)(&(addr2
->shadow_message
));
2497 addr3
->transport
= stp
;
2498 addr3
->transport_return
= DEFER
;
2499 addr3
->return_filename
= NULL
;
2500 addr3
->return_file
= -1;
2502 last
= &(addr3
->next
);
2505 /* If we found any addresses to shadow, run the delivery, and stick any
2506 message back into the shadow_message field in the original. */
2508 if (shadow_addr
!= NULL
)
2510 int save_count
= transport_count
;
2512 DEBUG(D_deliver
|D_transport
)
2513 debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n");
2514 deliver_local(shadow_addr
, TRUE
);
2516 for(; shadow_addr
!= NULL
; shadow_addr
= shadow_addr
->next
)
2518 int sresult
= shadow_addr
->transport_return
;
2519 *((uschar
**)(shadow_addr
->shadow_message
)) = (sresult
== OK
)?
2520 string_sprintf(" ST=%s", stp
->name
) :
2521 string_sprintf(" ST=%s (%s%s%s)", stp
->name
,
2522 (shadow_addr
->basic_errno
<= 0)?
2523 US
"" : US
strerror(shadow_addr
->basic_errno
),
2524 (shadow_addr
->basic_errno
<= 0 || shadow_addr
->message
== NULL
)?
2526 (shadow_addr
->message
!= NULL
)? shadow_addr
->message
:
2527 (shadow_addr
->basic_errno
<= 0)? US
"unknown error" : US
"");
2529 DEBUG(D_deliver
|D_transport
)
2530 debug_printf("%s shadow transport returned %s for %s\n",
2532 (sresult
== OK
)? "OK" :
2533 (sresult
== DEFER
)? "DEFER" :
2534 (sresult
== FAIL
)? "FAIL" :
2535 (sresult
== PANIC
)? "PANIC" : "?",
2536 shadow_addr
->address
);
2539 DEBUG(D_deliver
|D_transport
)
2540 debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n");
2542 transport_count
= save_count
; /* Restore original transport count */
2546 /* Cancel the expansions that were set up for the delivery. */
2548 deliver_set_expansions(NULL
);
2550 /* Now we can process the results of the real transport. We must take each
2551 address off the chain first, because post_process_one() puts it on another
2554 for (addr2
= addr
; addr2
!= NULL
; addr2
= nextaddr
)
2556 int result
= addr2
->transport_return
;
2557 nextaddr
= addr2
->next
;
2559 DEBUG(D_deliver
|D_transport
)
2560 debug_printf("%s transport returned %s for %s\n",
2562 (result
== OK
)? "OK" :
2563 (result
== DEFER
)? "DEFER" :
2564 (result
== FAIL
)? "FAIL" :
2565 (result
== PANIC
)? "PANIC" : "?",
2568 /* If there is a retry_record, or if delivery is deferred, build a retry
2569 item for setting a new retry time or deleting the old retry record from
2570 the database. These items are handled all together after all addresses
2571 have been handled (so the database is open just for a short time for
2574 if (result
== DEFER
|| testflag(addr2
, af_lt_retry_exists
))
2576 int flags
= (result
== DEFER
)? 0 : rf_delete
;
2577 uschar
*retry_key
= string_copy((tp
->retry_use_local_part
)?
2578 addr2
->address_retry_key
: addr2
->domain_retry_key
);
2580 retry_add_item(addr2
, retry_key
, flags
);
2583 /* Done with this address */
2585 if (result
== OK
) addr2
->more_errno
= deliver_time
;
2586 post_process_one(addr2
, result
, logflags
, DTYPE_TRANSPORT
, logchar
);
2588 /* If a pipe delivery generated text to be sent back, the result may be
2589 changed to FAIL, and we must copy this for subsequent addresses in the
2592 if (addr2
->transport_return
!= result
)
2594 for (addr3
= nextaddr
; addr3
!= NULL
; addr3
= addr3
->next
)
2596 addr3
->transport_return
= addr2
->transport_return
;
2597 addr3
->basic_errno
= addr2
->basic_errno
;
2598 addr3
->message
= addr2
->message
;
2600 result
= addr2
->transport_return
;
2603 /* Whether or not the result was changed to FAIL, we need to copy the
2604 return_file value from the first address into all the addresses of the
2605 batch, so they are all listed in the error message. */
2607 addr2
->return_file
= addr
->return_file
;
2609 /* Change log character for recording successful deliveries. */
2611 if (result
== OK
) logchar
= '-';
2613 } /* Loop back for next batch of addresses */
2619 /*************************************************
2620 * Sort remote deliveries *
2621 *************************************************/
2623 /* This function is called if remote_sort_domains is set. It arranges that the
2624 chain of addresses for remote deliveries is ordered according to the strings
2625 specified. Try to make this shuffling reasonably efficient by handling
2626 sequences of addresses rather than just single ones.
2633 sort_remote_deliveries(void)
2636 address_item
**aptr
= &addr_remote
;
2637 uschar
*listptr
= remote_sort_domains
;
2641 while (*aptr
!= NULL
&&
2642 (pattern
= string_nextinlist(&listptr
, &sep
, patbuf
, sizeof(patbuf
)))
2645 address_item
*moved
= NULL
;
2646 address_item
**bptr
= &moved
;
2648 while (*aptr
!= NULL
)
2650 address_item
**next
;
2651 deliver_domain
= (*aptr
)->domain
; /* set $domain */
2652 if (match_isinlist(deliver_domain
, &pattern
, UCHAR_MAX
+1,
2653 &domainlist_anchor
, NULL
, MCL_DOMAIN
, TRUE
, NULL
) == OK
)
2655 aptr
= &((*aptr
)->next
);
2659 next
= &((*aptr
)->next
);
2660 while (*next
!= NULL
&&
2661 (deliver_domain
= (*next
)->domain
, /* Set $domain */
2662 match_isinlist(deliver_domain
, &pattern
, UCHAR_MAX
+1,
2663 &domainlist_anchor
, NULL
, MCL_DOMAIN
, TRUE
, NULL
)) != OK
)
2664 next
= &((*next
)->next
);
2666 /* If the batch of non-matchers is at the end, add on any that were
2667 extracted further up the chain, and end this iteration. Otherwise,
2668 extract them from the chain and hang on the moved chain. */
2680 aptr
= &((*aptr
)->next
);
2683 /* If the loop ended because the final address matched, *aptr will
2684 be NULL. Add on to the end any extracted non-matching addresses. If
2685 *aptr is not NULL, the loop ended via "break" when *next is null, that
2686 is, there was a string of non-matching addresses at the end. In this
2687 case the extracted addresses have already been added on the end. */
2689 if (*aptr
== NULL
) *aptr
= moved
;
2695 debug_printf("remote addresses after sorting:\n");
2696 for (addr
= addr_remote
; addr
!= NULL
; addr
= addr
->next
)
2697 debug_printf(" %s\n", addr
->address
);
2703 /*************************************************
2704 * Read from pipe for remote delivery subprocess *
2705 *************************************************/
2707 /* This function is called when the subprocess is complete, but can also be
2708 called before it is complete, in order to empty a pipe that is full (to prevent
2709 deadlock). It must therefore keep track of its progress in the parlist data
2712 We read the pipe to get the delivery status codes and a possible error message
2713 for each address, optionally preceded by unusability data for the hosts and
2714 also by optional retry data.
2716 Read in large chunks into the big buffer and then scan through, interpreting
2717 the data therein. In most cases, only a single read will be necessary. No
2718 individual item will ever be anywhere near 2500 bytes in length, so by ensuring
2719 that we read the next chunk when there is less than 2500 bytes left in the
2720 non-final chunk, we can assume each item is complete in the buffer before
2721 handling it. Each item is written using a single write(), which is atomic for
2722 small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and
2723 often bigger) so even if we are reading while the subprocess is still going, we
2724 should never have only a partial item in the buffer.
2727 poffset the offset of the parlist item
2728 eop TRUE if the process has completed
2730 Returns: TRUE if the terminating 'Z' item has been read,
2731 or there has been a disaster (i.e. no more data needed);
2736 par_read_pipe(int poffset
, BOOL eop
)
2739 pardata
*p
= parlist
+ poffset
;
2740 address_item
*addrlist
= p
->addrlist
;
2741 address_item
*addr
= p
->addr
;
2744 uschar
*endptr
= big_buffer
;
2745 uschar
*ptr
= endptr
;
2746 uschar
*msg
= p
->msg
;
2747 BOOL done
= p
->done
;
2748 BOOL unfinished
= TRUE
;
2750 /* Loop through all items, reading from the pipe when necessary. The pipe
2751 is set up to be non-blocking, but there are two different Unix mechanisms in
2752 use. Exim uses O_NONBLOCK if it is defined. This returns 0 for end of file,
2753 and EAGAIN for no more data. If O_NONBLOCK is not defined, Exim uses O_NDELAY,
2754 which returns 0 for both end of file and no more data. We distinguish the
2755 two cases by taking 0 as end of file only when we know the process has
2758 Each separate item is written to the pipe in a single write(), and as they are
2759 all short items, the writes will all be atomic and we should never find
2760 ourselves in the position of having read an incomplete item. "Short" in this
2761 case can mean up to about 1K in the case when there is a long error message
2762 associated with an address. */
2764 DEBUG(D_deliver
) debug_printf("reading pipe for subprocess %d (%s)\n",
2765 (int)p
->pid
, eop
? "ended" : "not ended");
2769 retry_item
*r
, **rp
;
2770 int remaining
= endptr
- ptr
;
2772 /* Read (first time) or top up the chars in the buffer if necessary.
2773 There will be only one read if we get all the available data (i.e. don't
2774 fill the buffer completely). */
2776 if (remaining
< 2500 && unfinished
)
2779 int available
= big_buffer_size
- remaining
;
2781 if (remaining
> 0) memmove(big_buffer
, ptr
, remaining
);
2784 endptr
= big_buffer
+ remaining
;
2785 len
= read(fd
, endptr
, available
);
2787 DEBUG(D_deliver
) debug_printf("read() yielded %d\n", len
);
2789 /* If the result is EAGAIN and the process is not complete, just
2790 stop reading any more and process what we have already. */
2794 if (!eop
&& errno
== EAGAIN
) len
= 0; else
2796 msg
= string_sprintf("failed to read pipe from transport process "
2797 "%d for transport %s: %s", pid
, addr
->transport
->driver_name
,
2803 /* If the length is zero (eof or no-more-data), just process what we
2804 already have. Note that if the process is still running and we have
2805 read all the data in the pipe (but less that "available") then we
2806 won't read any more, as "unfinished" will get set FALSE. */
2809 unfinished
= len
== available
;
2812 /* If we are at the end of the available data, exit the loop. */
2814 if (ptr
>= endptr
) break;
2816 /* Handle each possible type of item, assuming the complete item is
2817 available in store. */
2821 /* Host items exist only if any hosts were marked unusable. Match
2822 up by checking the IP address. */
2825 for (h
= addrlist
->host_list
; h
!= NULL
; h
= h
->next
)
2827 if (h
->address
== NULL
|| Ustrcmp(h
->address
, ptr
+2) != 0) continue;
2835 /* Retry items are sent in a preceding R item for each address. This is
2836 kept separate to keep each message short enough to guarantee it won't
2837 be split in the pipe. Hopefully, in the majority of cases, there won't in
2838 fact be any retry items at all.
2840 The complete set of retry items might include an item to delete a
2841 routing retry if there was a previous routing delay. However, routing
2842 retries are also used when a remote transport identifies an address error.
2843 In that case, there may also be an "add" item for the same key. Arrange
2844 that a "delete" item is dropped in favour of an "add" item. */
2847 if (addr
== NULL
) goto ADDR_MISMATCH
;
2849 DEBUG(D_deliver
|D_retry
)
2850 debug_printf("reading retry information for %s from subprocess\n",
2853 /* Cut out any "delete" items on the list. */
2855 for (rp
= &(addr
->retries
); (r
= *rp
) != NULL
; rp
= &(r
->next
))
2857 if (Ustrcmp(r
->key
, ptr
+1) == 0) /* Found item with same key */
2859 if ((r
->flags
& rf_delete
) == 0) break; /* It was not "delete" */
2860 *rp
= r
->next
; /* Excise a delete item */
2861 DEBUG(D_deliver
|D_retry
)
2862 debug_printf(" existing delete item dropped\n");
2866 /* We want to add a delete item only if there is no non-delete item;
2867 however we still have to step ptr through the data. */
2869 if (r
== NULL
|| (*ptr
& rf_delete
) == 0)
2871 r
= store_get(sizeof(retry_item
));
2872 r
->next
= addr
->retries
;
2875 r
->key
= string_copy(ptr
);
2877 memcpy(&(r
->basic_errno
), ptr
, sizeof(r
->basic_errno
));
2878 ptr
+= sizeof(r
->basic_errno
);
2879 memcpy(&(r
->more_errno
), ptr
, sizeof(r
->more_errno
));
2880 ptr
+= sizeof(r
->more_errno
);
2881 r
->message
= (*ptr
)? string_copy(ptr
) : NULL
;
2882 DEBUG(D_deliver
|D_retry
)
2883 debug_printf(" added %s item\n",
2884 ((r
->flags
& rf_delete
) == 0)? "retry" : "delete");
2889 DEBUG(D_deliver
|D_retry
)
2890 debug_printf(" delete item not added: non-delete item exists\n");
2893 ptr
+= sizeof(r
->basic_errno
) + sizeof(r
->more_errno
);
2899 /* Put the amount of data written into the parlist block */
2902 memcpy(&(p
->transport_count
), ptr
, sizeof(transport_count
));
2903 ptr
+= sizeof(transport_count
);
2906 /* Address items are in the order of items on the address chain. We
2907 remember the current address value in case this function is called
2908 several times to empty the pipe in stages. Information about delivery
2909 over TLS is sent in a preceding X item for each address. We don't put
2910 it in with the other info, in order to keep each message short enough to
2911 guarantee it won't be split in the pipe. */
2915 if (addr
== NULL
) goto ADDR_MISMATCH
; /* Below, in 'A' handler */
2916 addr
->cipher
= (*ptr
)? string_copy(ptr
) : NULL
;
2918 addr
->peerdn
= (*ptr
)? string_copy(ptr
) : NULL
;
2923 case 'C': /* client authenticator information */
2927 smtp_authenticated
= TRUE
;
2928 client_authenticator
= (*ptr
)? string_copy(ptr
) : NULL
;
2931 client_authenticated_id
= (*ptr
)? string_copy(ptr
) : NULL
;
2941 msg
= string_sprintf("address count mismatch for data read from pipe "
2942 "for transport process %d for transport %s", pid
,
2943 addrlist
->transport
->driver_name
);
2948 addr
->transport_return
= *ptr
++;
2949 addr
->special_action
= *ptr
++;
2950 memcpy(&(addr
->basic_errno
), ptr
, sizeof(addr
->basic_errno
));
2951 ptr
+= sizeof(addr
->basic_errno
);
2952 memcpy(&(addr
->more_errno
), ptr
, sizeof(addr
->more_errno
));
2953 ptr
+= sizeof(addr
->more_errno
);
2954 memcpy(&(addr
->flags
), ptr
, sizeof(addr
->flags
));
2955 ptr
+= sizeof(addr
->flags
);
2956 addr
->message
= (*ptr
)? string_copy(ptr
) : NULL
;
2958 addr
->user_message
= (*ptr
)? string_copy(ptr
) : NULL
;
2961 /* Always two strings for host information, followed by the port number */
2965 h
= store_get(sizeof(host_item
));
2966 h
->name
= string_copy(ptr
);
2968 h
->address
= string_copy(ptr
);
2970 memcpy(&(h
->port
), ptr
, sizeof(h
->port
));
2971 ptr
+= sizeof(h
->port
);
2972 addr
->host_used
= h
;
2976 /* Finished with this address */
2981 /* Z marks the logical end of the data. It is followed by '0' if
2982 continue_transport was NULL at the end of transporting, otherwise '1'.
2983 We need to know when it becomes NULL during a delivery down a passed SMTP
2984 channel so that we don't try to pass anything more down it. Of course, for
2985 most normal messages it will remain NULL all the time. */
2990 continue_transport
= NULL
;
2991 continue_hostname
= NULL
;
2994 DEBUG(D_deliver
) debug_printf("Z%c item read\n", *ptr
);
2997 /* Anything else is a disaster. */
3000 msg
= string_sprintf("malformed data (%d) read from pipe for transport "
3001 "process %d for transport %s", ptr
[-1], pid
,
3002 addr
->transport
->driver_name
);
3008 /* The done flag is inspected externally, to determine whether or not to
3009 call the function again when the process finishes. */
3013 /* If the process hadn't finished, and we haven't seen the end of the data
3014 or suffered a disaster, update the rest of the state, and return FALSE to
3015 indicate "not finished". */
3024 /* Close our end of the pipe, to prevent deadlock if the far end is still
3025 pushing stuff into it. */
3030 /* If we have finished without error, but haven't had data for every address,
3031 something is wrong. */
3033 if (msg
== NULL
&& addr
!= NULL
)
3034 msg
= string_sprintf("insufficient address data read from pipe "
3035 "for transport process %d for transport %s", pid
,
3036 addr
->transport
->driver_name
);
3038 /* If an error message is set, something has gone wrong in getting back
3039 the delivery data. Put the message into each address and freeze it. */
3043 for (addr
= addrlist
; addr
!= NULL
; addr
= addr
->next
)
3045 addr
->transport_return
= DEFER
;
3046 addr
->special_action
= SPECIAL_FREEZE
;
3047 addr
->message
= msg
;
3051 /* Return TRUE to indicate we have got all we need from this process, even
3052 if it hasn't actually finished yet. */
3059 /*************************************************
3060 * Post-process a set of remote addresses *
3061 *************************************************/
3063 /* Do what has to be done immediately after a remote delivery for each set of
3064 addresses, then re-write the spool if necessary. Note that post_process_one
3065 puts the address on an appropriate queue; hence we must fish off the next
3066 one first. This function is also called if there is a problem with setting
3067 up a subprocess to do a remote delivery in parallel. In this case, the final
3068 argument contains a message, and the action must be forced to DEFER.
3071 addr pointer to chain of address items
3072 logflags flags for logging
3073 msg NULL for normal cases; -> error message for unexpected problems
3074 fallback TRUE if processing fallback hosts
3080 remote_post_process(address_item
*addr
, int logflags
, uschar
*msg
,
3085 /* If any host addresses were found to be unusable, add them to the unusable
3086 tree so that subsequent deliveries don't try them. */
3088 for (h
= addr
->host_list
; h
!= NULL
; h
= h
->next
)
3090 if (h
->address
== NULL
) continue;
3091 if (h
->status
>= hstatus_unusable
) tree_add_unusable(h
);
3094 /* Now handle each address on the chain. The transport has placed '=' or '-'
3095 into the special_action field for each successful delivery. */
3097 while (addr
!= NULL
)
3099 address_item
*next
= addr
->next
;
3101 /* If msg == NULL (normal processing) and the result is DEFER and we are
3102 processing the main hosts and there are fallback hosts available, put the
3103 address on the list for fallback delivery. */
3105 if (addr
->transport_return
== DEFER
&&
3106 addr
->fallback_hosts
!= NULL
&&
3110 addr
->host_list
= addr
->fallback_hosts
;
3111 addr
->next
= addr_fallback
;
3112 addr_fallback
= addr
;
3113 DEBUG(D_deliver
) debug_printf("%s queued for fallback host(s)\n", addr
->address
);
3116 /* If msg is set (=> unexpected problem), set it in the address before
3117 doing the ordinary post processing. */
3123 addr
->message
= msg
;
3124 addr
->transport_return
= DEFER
;
3126 (void)post_process_one(addr
, addr
->transport_return
, logflags
,
3127 DTYPE_TRANSPORT
, addr
->special_action
);
3135 /* If we have just delivered down a passed SMTP channel, and that was
3136 the last address, the channel will have been closed down. Now that
3137 we have logged that delivery, set continue_sequence to 1 so that
3138 any subsequent deliveries don't get "*" incorrectly logged. */
3140 if (continue_transport
== NULL
) continue_sequence
= 1;
3145 /*************************************************
3146 * Wait for one remote delivery subprocess *
3147 *************************************************/
3149 /* This function is called while doing remote deliveries when either the
3150 maximum number of processes exist and we need one to complete so that another
3151 can be created, or when waiting for the last ones to complete. It must wait for
3152 the completion of one subprocess, empty the control block slot, and return a
3153 pointer to the address chain.
3156 Returns: pointer to the chain of addresses handled by the process;
3157 NULL if no subprocess found - this is an unexpected error
3160 static address_item
*
3163 int poffset
, status
;
3164 address_item
*addr
, *addrlist
;
3167 set_process_info("delivering %s: waiting for a remote delivery subprocess "
3168 "to finish", message_id
);
3170 /* Loop until either a subprocess completes, or there are no subprocesses in
3171 existence - in which case give an error return. We cannot proceed just by
3172 waiting for a completion, because a subprocess may have filled up its pipe, and
3173 be waiting for it to be emptied. Therefore, if no processes have finished, we
3174 wait for one of the pipes to acquire some data by calling select(), with a
3175 timeout just in case.
3177 The simple approach is just to iterate after reading data from a ready pipe.
3178 This leads to non-ideal behaviour when the subprocess has written its final Z
3179 item, closed the pipe, and is in the process of exiting (the common case). A
3180 call to waitpid() yields nothing completed, but select() shows the pipe ready -
3181 reading it yields EOF, so you end up with busy-waiting until the subprocess has
3184 To avoid this, if all the data that is needed has been read from a subprocess
3185 after select(), an explicit wait() for it is done. We know that all it is doing
3186 is writing to the pipe and then exiting, so the wait should not be long.
3188 The non-blocking waitpid() is to some extent just insurance; if we could
3189 reliably detect end-of-file on the pipe, we could always know when to do a
3190 blocking wait() for a completed process. However, because some systems use
3191 NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to
3192 use code that functions without the need to recognize EOF.
3194 There's a double loop here just in case we end up with a process that is not in
3195 the list of remote delivery processes. Something has obviously gone wrong if
3196 this is the case. (For example, a process that is incorrectly left over from
3197 routing or local deliveries might be found.) The damage can be minimized by
3198 looping back and looking for another process. If there aren't any, the error
3199 return will happen. */
3201 for (;;) /* Normally we do not repeat this loop */
3203 while ((pid
= waitpid(-1, &status
, WNOHANG
)) <= 0)
3206 fd_set select_pipes
;
3207 int maxpipe
, readycount
;
3209 /* A return value of -1 can mean several things. If errno != ECHILD, it
3210 either means invalid options (which we discount), or that this process was
3211 interrupted by a signal. Just loop to try the waitpid() again.
3213 If errno == ECHILD, waitpid() is telling us that there are no subprocesses
3214 in existence. This should never happen, and is an unexpected error.
3215 However, there is a nasty complication when running under Linux. If "strace
3216 -f" is being used under Linux to trace this process and its children,
3217 subprocesses are "stolen" from their parents and become the children of the
3218 tracing process. A general wait such as the one we've just obeyed returns
3219 as if there are no children while subprocesses are running. Once a
3220 subprocess completes, it is restored to the parent, and waitpid(-1) finds
3221 it. Thanks to Joachim Wieland for finding all this out and suggesting a
3224 This does not happen using "truss" on Solaris, nor (I think) with other
3225 tracing facilities on other OS. It seems to be specific to Linux.
3227 What we do to get round this is to use kill() to see if any of our
3228 subprocesses are still in existence. If kill() gives an OK return, we know
3229 it must be for one of our processes - it can't be for a re-use of the pid,
3230 because if our process had finished, waitpid() would have found it. If any
3231 of our subprocesses are in existence, we proceed to use select() as if
3232 waitpid() had returned zero. I think this is safe. */
3236 if (errno
!= ECHILD
) continue; /* Repeats the waitpid() */
3239 debug_printf("waitpid() returned -1/ECHILD: checking explicitly "
3240 "for process existence\n");
3242 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3244 if ((pid
= parlist
[poffset
].pid
) != 0 && kill(pid
, 0) == 0)
3246 DEBUG(D_deliver
) debug_printf("process %d still exists: assume "
3247 "stolen by strace\n", (int)pid
);
3248 break; /* With poffset set */
3252 if (poffset
>= remote_max_parallel
)
3254 DEBUG(D_deliver
) debug_printf("*** no delivery children found\n");
3255 return NULL
; /* This is the error return */
3259 /* A pid value greater than 0 breaks the "while" loop. A negative value has
3260 been handled above. A return value of zero means that there is at least one
3261 subprocess, but there are no completed subprocesses. See if any pipes are
3262 ready with any data for reading. */
3264 DEBUG(D_deliver
) debug_printf("selecting on subprocess pipes\n");
3267 FD_ZERO(&select_pipes
);
3268 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3270 if (parlist
[poffset
].pid
!= 0)
3272 int fd
= parlist
[poffset
].fd
;
3273 FD_SET(fd
, &select_pipes
);
3274 if (fd
> maxpipe
) maxpipe
= fd
;
3278 /* Stick in a 60-second timeout, just in case. */
3283 readycount
= select(maxpipe
+ 1, (SELECT_ARG2_TYPE
*)&select_pipes
,
3286 /* Scan through the pipes and read any that are ready; use the count
3287 returned by select() to stop when there are no more. Select() can return
3288 with no processes (e.g. if interrupted). This shouldn't matter.
3290 If par_read_pipe() returns TRUE, it means that either the terminating Z was
3291 read, or there was a disaster. In either case, we are finished with this
3292 process. Do an explicit wait() for the process and break the main loop if
3295 It turns out that we have to deal with the case of an interrupted system
3296 call, which can happen on some operating systems if the signal handling is
3297 set up to do that by default. */
3300 readycount
> 0 && poffset
< remote_max_parallel
;
3303 if ((pid
= parlist
[poffset
].pid
) != 0 &&
3304 FD_ISSET(parlist
[poffset
].fd
, &select_pipes
))
3307 if (par_read_pipe(poffset
, FALSE
)) /* Finished with this pipe */
3309 for (;;) /* Loop for signals */
3311 pid_t endedpid
= waitpid(pid
, &status
, 0);
3312 if (endedpid
== pid
) goto PROCESS_DONE
;
3313 if (endedpid
!= (pid_t
)(-1) || errno
!= EINTR
)
3314 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Unexpected error return "
3315 "%d (errno = %d) from waitpid() for process %d",
3316 (int)endedpid
, errno
, (int)pid
);
3322 /* Now go back and look for a completed subprocess again. */
3325 /* A completed process was detected by the non-blocking waitpid(). Find the
3326 data block that corresponds to this subprocess. */
3328 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3329 if (pid
== parlist
[poffset
].pid
) break;
3331 /* Found the data block; this is a known remote delivery process. We don't
3332 need to repeat the outer loop. This should be what normally happens. */
3334 if (poffset
< remote_max_parallel
) break;
3336 /* This situation is an error, but it's probably better to carry on looking
3337 for another process than to give up (as we used to do). */
3339 log_write(0, LOG_MAIN
|LOG_PANIC
, "Process %d finished: not found in remote "
3340 "transport process list", pid
);
3341 } /* End of the "for" loop */
3343 /* Come here when all the data was completely read after a select(), and
3344 the process in pid has been wait()ed for. */
3351 debug_printf("remote delivery process %d ended\n", (int)pid
);
3353 debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid
,
3357 set_process_info("delivering %s", message_id
);
3359 /* Get the chain of processed addresses */
3361 addrlist
= parlist
[poffset
].addrlist
;
3363 /* If the process did not finish cleanly, record an error and freeze (except
3364 for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed,
3365 in case the delivery did actually happen. */
3367 if ((status
& 0xffff) != 0)
3370 int msb
= (status
>> 8) & 255;
3371 int lsb
= status
& 255;
3372 int code
= (msb
== 0)? (lsb
& 0x7f) : msb
;
3374 msg
= string_sprintf("%s transport process returned non-zero status 0x%04x: "
3376 addrlist
->transport
->driver_name
,
3378 (msb
== 0)? "terminated by signal" : "exit code",
3381 if (msb
!= 0 || (code
!= SIGTERM
&& code
!= SIGKILL
&& code
!= SIGQUIT
))
3382 addrlist
->special_action
= SPECIAL_FREEZE
;
3384 for (addr
= addrlist
; addr
!= NULL
; addr
= addr
->next
)
3386 addr
->transport_return
= DEFER
;
3387 addr
->message
= msg
;
3390 remove_journal
= FALSE
;
3393 /* Else complete reading the pipe to get the result of the delivery, if all
3394 the data has not yet been obtained. */
3396 else if (!parlist
[poffset
].done
) (void)par_read_pipe(poffset
, TRUE
);
3398 /* Put the data count and return path into globals, mark the data slot unused,
3399 decrement the count of subprocesses, and return the address chain. */
3401 transport_count
= parlist
[poffset
].transport_count
;
3402 used_return_path
= parlist
[poffset
].return_path
;
3403 parlist
[poffset
].pid
= 0;
3410 /*************************************************
3411 * Wait for subprocesses and post-process *
3412 *************************************************/
3414 /* This function waits for subprocesses until the number that are still running
3415 is below a given threshold. For each complete subprocess, the addresses are
3416 post-processed. If we can't find a running process, there is some shambles.
3417 Better not bomb out, as that might lead to multiple copies of the message. Just
3418 log and proceed as if all done.
3421 max maximum number of subprocesses to leave running
3422 fallback TRUE if processing fallback hosts
3428 par_reduce(int max
, BOOL fallback
)
3430 while (parcount
> max
)
3432 address_item
*doneaddr
= par_wait();
3433 if (doneaddr
== NULL
)
3435 log_write(0, LOG_MAIN
|LOG_PANIC
,
3436 "remote delivery process count got out of step");
3439 else remote_post_process(doneaddr
, LOG_MAIN
, NULL
, fallback
);
3446 /*************************************************
3447 * Do remote deliveries *
3448 *************************************************/
3450 /* This function is called to process the addresses in addr_remote. We must
3451 pick off the queue all addresses that have the same transport, remote
3452 destination, and errors address, and hand them to the transport in one go,
3453 subject to some configured limitations. If this is a run to continue delivering
3454 to an existing delivery channel, skip all but those addresses that can go to
3455 that channel. The skipped addresses just get deferred.
3457 If mua_wrapper is set, all addresses must be able to be sent in a single
3458 transaction. If not, this function yields FALSE.
3460 In Exim 4, remote deliveries are always done in separate processes, even
3461 if remote_max_parallel = 1 or if there's only one delivery to do. The reason
3462 is so that the base process can retain privilege. This makes the
3463 implementation of fallback transports feasible (though not initially done.)
3465 We create up to the configured number of subprocesses, each of which passes
3466 back the delivery state via a pipe. (However, when sending down an existing
3467 connection, remote_max_parallel is forced to 1.)
3470 fallback TRUE if processing fallback hosts
3472 Returns: TRUE normally
3473 FALSE if mua_wrapper is set and the addresses cannot all be sent
3478 do_remote_deliveries(BOOL fallback
)
3484 parcount
= 0; /* Number of executing subprocesses */
3486 /* When sending down an existing channel, only do one delivery at a time.
3487 We use a local variable (parmax) to hold the maximum number of processes;
3488 this gets reduced from remote_max_parallel if we can't create enough pipes. */
3490 if (continue_transport
!= NULL
) remote_max_parallel
= 1;
3491 parmax
= remote_max_parallel
;
3493 /* If the data for keeping a list of processes hasn't yet been
3496 if (parlist
== NULL
)
3498 parlist
= store_get(remote_max_parallel
* sizeof(pardata
));
3499 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3500 parlist
[poffset
].pid
= 0;
3503 /* Now loop for each remote delivery */
3505 for (delivery_count
= 0; addr_remote
!= NULL
; delivery_count
++)
3511 int address_count
= 1;
3512 int address_count_max
;
3514 BOOL use_initgroups
;
3515 BOOL pipe_done
= FALSE
;
3516 transport_instance
*tp
;
3517 address_item
**anchor
= &addr_remote
;
3518 address_item
*addr
= addr_remote
;
3519 address_item
*last
= addr
;
3522 /* Pull the first address right off the list. */
3524 addr_remote
= addr
->next
;
3527 DEBUG(D_deliver
|D_transport
)
3528 debug_printf("--------> %s <--------\n", addr
->address
);
3530 /* If no transport has been set, there has been a big screw-up somewhere. */
3532 if ((tp
= addr
->transport
) == NULL
)
3534 disable_logging
= FALSE
; /* Jic */
3535 remote_post_process(addr
, LOG_MAIN
|LOG_PANIC
,
3536 US
"No transport set by router", fallback
);
3540 /* Check that this base address hasn't previously been delivered to this
3541 transport. The check is necessary at this point to handle homonymic addresses
3542 correctly in cases where the pattern of redirection changes between delivery
3543 attempts. Non-homonymic previous delivery is detected earlier, at routing
3546 if (previously_transported(addr
, FALSE
)) continue;
3548 /* Force failure if the message is too big. */
3550 if (tp
->message_size_limit
!= NULL
)
3552 int rc
= check_message_size(tp
, addr
);
3555 addr
->transport_return
= rc
;
3556 remote_post_process(addr
, LOG_MAIN
, NULL
, fallback
);
3561 /* Get the flag which specifies whether the transport can handle different
3562 domains that nevertheless resolve to the same set of hosts. */
3564 multi_domain
= tp
->multi_domain
;
3566 /* Get the maximum it can handle in one envelope, with zero meaning
3567 unlimited, which is forced for the MUA wrapper case. */
3569 address_count_max
= tp
->max_addresses
;
3570 if (address_count_max
== 0 || mua_wrapper
) address_count_max
= 999999;
3573 /************************************************************************/
3574 /***** This is slightly experimental code, but should be safe. *****/
3576 /* The address_count_max value is the maximum number of addresses that the
3577 transport can send in one envelope. However, the transport must be capable of
3578 dealing with any number of addresses. If the number it gets exceeds its
3579 envelope limitation, it must send multiple copies of the message. This can be
3580 done over a single connection for SMTP, so uses less resources than making
3581 multiple connections. On the other hand, if remote_max_parallel is greater
3582 than one, it is perhaps a good idea to use parallel processing to move the
3583 message faster, even if that results in multiple simultaneous connections to
3586 How can we come to some compromise between these two ideals? What we do is to
3587 limit the number of addresses passed to a single instance of a transport to
3588 the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total
3589 number of addresses routed to remote transports divided by
3590 remote_max_parallel. For example, if the message has 100 remote recipients,
3591 remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at
3592 once. But if rcpt_max is 100, we could send up to 100.
3594 Of course, not all the remotely addresses in a message are going to go to the
3595 same set of hosts (except in smarthost configurations), so this is just a
3596 heuristic way of dividing up the work.
3598 Furthermore (1), because this may not be wanted in some cases, and also to
3599 cope with really pathological cases, there is also a limit to the number of
3600 messages that are sent over one connection. This is the same limit that is
3601 used when sending several different messages over the same connection.
3602 Continue_sequence is set when in this situation, to the number sent so
3603 far, including this message.
3605 Furthermore (2), when somebody explicitly sets the maximum value to 1, it
3606 is probably because they are using VERP, in which case they want to pass only
3607 one address at a time to the transport, in order to be able to use
3608 $local_part and $domain in constructing a new return path. We could test for
3609 the use of these variables, but as it is so likely they will be used when the
3610 maximum is 1, we don't bother. Just leave the value alone. */
3612 if (address_count_max
!= 1 &&
3613 address_count_max
< remote_delivery_count
/remote_max_parallel
)
3615 int new_max
= remote_delivery_count
/remote_max_parallel
;
3616 int message_max
= tp
->connection_max_messages
;
3617 if (connection_max_messages
>= 0) message_max
= connection_max_messages
;
3618 message_max
-= continue_sequence
- 1;
3619 if (message_max
> 0 && new_max
> address_count_max
* message_max
)
3620 new_max
= address_count_max
* message_max
;
3621 address_count_max
= new_max
;
3624 /************************************************************************/
3627 /* Pick off all addresses which have the same transport, errors address,
3628 destination, and extra headers. In some cases they point to the same host
3629 list, but we also need to check for identical host lists generated from
3630 entirely different domains. The host list pointers can be NULL in the case
3631 where the hosts are defined in the transport. There is also a configured
3632 maximum limit of addresses that can be handled at once (see comments above
3633 for how it is computed). */
3635 while ((next
= *anchor
) != NULL
&& address_count
< address_count_max
)
3637 if ((multi_domain
|| Ustrcmp(next
->domain
, addr
->domain
) == 0)
3639 tp
== next
->transport
3641 same_hosts(next
->host_list
, addr
->host_list
)
3643 same_strings(next
->p
.errors_address
, addr
->p
.errors_address
)
3645 same_headers(next
->p
.extra_headers
, addr
->p
.extra_headers
)
3647 same_ugid(tp
, next
, addr
)
3649 (next
->p
.remove_headers
== addr
->p
.remove_headers
||
3650 (next
->p
.remove_headers
!= NULL
&&
3651 addr
->p
.remove_headers
!= NULL
&&
3652 Ustrcmp(next
->p
.remove_headers
, addr
->p
.remove_headers
) == 0)))
3654 *anchor
= next
->next
;
3656 next
->first
= addr
; /* remember top one (for retry processing) */
3661 else anchor
= &(next
->next
);
3664 /* If we are acting as an MUA wrapper, all addresses must go in a single
3665 transaction. If not, put them back on the chain and yield FALSE. */
3667 if (mua_wrapper
&& addr_remote
!= NULL
)
3669 last
->next
= addr_remote
;
3674 /* Set up the expansion variables for this set of addresses */
3676 deliver_set_expansions(addr
);
3678 /* Compute the return path, expanding a new one if required. The old one
3679 must be set first, as it might be referred to in the expansion. */
3681 if(addr
->p
.errors_address
!= NULL
)
3682 return_path
= addr
->p
.errors_address
;
3683 #ifdef EXPERIMENTAL_SRS
3684 else if(addr
->p
.srs_sender
!= NULL
)
3685 return_path
= addr
->p
.srs_sender
;
3688 return_path
= sender_address
;
3690 if (tp
->return_path
!= NULL
)
3692 uschar
*new_return_path
= expand_string(tp
->return_path
);
3693 if (new_return_path
== NULL
)
3695 if (!expand_string_forcedfail
)
3697 remote_post_process(addr
, LOG_MAIN
|LOG_PANIC
,
3698 string_sprintf("Failed to expand return path \"%s\": %s",
3699 tp
->return_path
, expand_string_message
), fallback
);
3703 else return_path
= new_return_path
;
3706 /* Find the uid, gid, and use_initgroups setting for this transport. Failure
3707 logs and sets up error messages, so we just post-process and continue with
3708 the next address. */
3710 if (!findugid(addr
, tp
, &uid
, &gid
, &use_initgroups
))
3712 remote_post_process(addr
, LOG_MAIN
|LOG_PANIC
, NULL
, fallback
);
3716 /* If this transport has a setup function, call it now so that it gets
3717 run in this process and not in any subprocess. That way, the results of
3718 any setup that are retained by the transport can be reusable. One of the
3719 things the setup does is to set the fallback host lists in the addresses.
3720 That is why it is called at this point, before the continue delivery
3721 processing, because that might use the fallback hosts. */
3723 if (tp
->setup
!= NULL
)
3724 (void)((tp
->setup
)(addr
->transport
, addr
, NULL
, uid
, gid
, NULL
));
3726 /* If this is a run to continue delivery down an already-established
3727 channel, check that this set of addresses matches the transport and
3728 the channel. If it does not, defer the addresses. If a host list exists,
3729 we must check that the continue host is on the list. Otherwise, the
3730 host is set in the transport. */
3732 continue_more
= FALSE
; /* In case got set for the last lot */
3733 if (continue_transport
!= NULL
)
3735 BOOL ok
= Ustrcmp(continue_transport
, tp
->name
) == 0;
3736 if (ok
&& addr
->host_list
!= NULL
)
3740 for (h
= addr
->host_list
; h
!= NULL
; h
= h
->next
)
3742 if (Ustrcmp(h
->name
, continue_hostname
) == 0)
3743 { ok
= TRUE
; break; }
3747 /* Addresses not suitable; defer or queue for fallback hosts (which
3748 might be the continue host) and skip to next address. */
3752 DEBUG(D_deliver
) debug_printf("not suitable for continue_transport\n");
3755 if (addr
->fallback_hosts
!= NULL
&& !fallback
)
3759 next
->host_list
= next
->fallback_hosts
;
3760 DEBUG(D_deliver
) debug_printf("%s queued for fallback host(s)\n", next
->address
);
3761 if (next
->next
== NULL
) break;
3764 next
->next
= addr_fallback
;
3765 addr_fallback
= addr
;
3770 while (next
->next
!= NULL
) next
= next
->next
;
3771 next
->next
= addr_defer
;
3778 /* Set a flag indicating whether there are further addresses that list
3779 the continued host. This tells the transport to leave the channel open,
3780 but not to pass it to another delivery process. */
3782 for (next
= addr_remote
; next
!= NULL
; next
= next
->next
)
3785 for (h
= next
->host_list
; h
!= NULL
; h
= h
->next
)
3787 if (Ustrcmp(h
->name
, continue_hostname
) == 0)
3788 { continue_more
= TRUE
; break; }
3793 /* The transports set up the process info themselves as they may connect
3794 to more than one remote machine. They also have to set up the filter
3795 arguments, if required, so that the host name and address are available
3798 transport_filter_argv
= NULL
;
3800 /* Create the pipe for inter-process communication. If pipe creation
3801 fails, it is probably because the value of remote_max_parallel is so
3802 large that too many file descriptors for pipes have been created. Arrange
3803 to wait for a process to finish, and then try again. If we still can't
3804 create a pipe when all processes have finished, break the retry loop. */
3808 if (pipe(pfd
) == 0) pipe_done
= TRUE
;
3809 else if (parcount
> 0) parmax
= parcount
;
3812 /* We need to make the reading end of the pipe non-blocking. There are
3813 two different options for this. Exim is cunningly (I hope!) coded so
3814 that it can use either of them, though it prefers O_NONBLOCK, which
3815 distinguishes between EOF and no-more-data. */
3818 (void)fcntl(pfd
[pipe_read
], F_SETFL
, O_NONBLOCK
);
3820 (void)fcntl(pfd
[pipe_read
], F_SETFL
, O_NDELAY
);
3823 /* If the maximum number of subprocesses already exist, wait for a process
3824 to finish. If we ran out of file descriptors, parmax will have been reduced
3825 from its initial value of remote_max_parallel. */
3827 par_reduce(parmax
- 1, fallback
);
3830 /* If we failed to create a pipe and there were no processes to wait
3831 for, we have to give up on this one. Do this outside the above loop
3832 so that we can continue the main loop. */
3836 remote_post_process(addr
, LOG_MAIN
|LOG_PANIC
,
3837 string_sprintf("unable to create pipe: %s", strerror(errno
)), fallback
);
3841 /* Find a free slot in the pardata list. Must do this after the possible
3842 waiting for processes to finish, because a terminating process will free
3845 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3846 if (parlist
[poffset
].pid
== 0) break;
3848 /* If there isn't one, there has been a horrible disaster. */
3850 if (poffset
>= remote_max_parallel
)
3852 (void)close(pfd
[pipe_write
]);
3853 (void)close(pfd
[pipe_read
]);
3854 remote_post_process(addr
, LOG_MAIN
|LOG_PANIC
,
3855 US
"Unexpectedly no free subprocess slot", fallback
);
3859 /* Now fork a subprocess to do the remote delivery, but before doing so,
3860 ensure that any cached resourses are released so as not to interfere with
3861 what happens in the subprocess. */
3865 if ((pid
= fork()) == 0)
3867 int fd
= pfd
[pipe_write
];
3870 /* There are weird circumstances in which logging is disabled */
3872 disable_logging
= tp
->disable_logging
;
3874 /* Show pids on debug output if parallelism possible */
3876 if (parmax
> 1 && (parcount
> 0 || addr_remote
!= NULL
))
3878 DEBUG(D_any
|D_v
) debug_selector
|= D_pid
;
3879 DEBUG(D_deliver
) debug_printf("Remote delivery process started\n");
3882 /* Reset the random number generator, so different processes don't all
3883 have the same sequence. In the test harness we want different, but
3884 predictable settings for each delivery process, so do something explicit
3885 here rather they rely on the fixed reset in the random number function. */
3887 random_seed
= running_in_test_harness
? 42 + 2*delivery_count
: 0;
3889 /* Set close-on-exec on the pipe so that it doesn't get passed on to
3890 a new process that may be forked to do another delivery down the same
3893 (void)fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
);
3895 /* Close open file descriptors for the pipes of other processes
3896 that are running in parallel. */
3898 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3899 if (parlist
[poffset
].pid
!= 0) (void)close(parlist
[poffset
].fd
);
3901 /* This process has inherited a copy of the file descriptor
3902 for the data file, but its file pointer is shared with all the
3903 other processes running in parallel. Therefore, we have to re-open
3904 the file in order to get a new file descriptor with its own
3905 file pointer. We don't need to lock it, as the lock is held by
3906 the parent process. There doesn't seem to be any way of doing
3907 a dup-with-new-file-pointer. */
3909 (void)close(deliver_datafile
);
3910 sprintf(CS spoolname
, "%s/input/%s/%s-D", spool_directory
, message_subdir
,
3912 deliver_datafile
= Uopen(spoolname
, O_RDWR
| O_APPEND
, 0);
3914 if (deliver_datafile
< 0)
3915 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Failed to reopen %s for remote "
3916 "parallel delivery: %s", spoolname
, strerror(errno
));
3918 /* Set the close-on-exec flag */
3920 (void)fcntl(deliver_datafile
, F_SETFD
, fcntl(deliver_datafile
, F_GETFD
) |
3923 /* Set the uid/gid of this process; bombs out on failure. */
3925 exim_setugid(uid
, gid
, use_initgroups
,
3926 string_sprintf("remote delivery to %s with transport=%s",
3927 addr
->address
, tp
->name
));
3929 /* Close the unwanted half of this process' pipe, set the process state,
3930 and run the transport. Afterwards, transport_count will contain the number
3931 of bytes written. */
3933 (void)close(pfd
[pipe_read
]);
3934 set_process_info("delivering %s using %s", message_id
, tp
->name
);
3935 debug_print_string(tp
->debug_string
);
3936 if (!(tp
->info
->code
)(addr
->transport
, addr
)) replicate_status(addr
);
3938 set_process_info("delivering %s (just run %s for %s%s in subprocess)",
3939 message_id
, tp
->name
, addr
->address
, (addr
->next
== NULL
)? "" : ", ...");
3941 /* Ensure any cached resources that we used are now released */
3945 /* Pass the result back down the pipe. This is a lot more information
3946 than is needed for a local delivery. We have to send back the error
3947 status for each address, the usability status for each host that is
3948 flagged as unusable, and all the retry items. When TLS is in use, we
3949 send also the cipher and peerdn information. Each type of information
3950 is flagged by an identifying byte, and is then in a fixed format (with
3951 strings terminated by zeros), and there is a final terminator at the
3952 end. The host information and retry information is all attached to
3953 the first address, so that gets sent at the start. */
3955 /* Host unusability information: for most success cases this will
3958 for (h
= addr
->host_list
; h
!= NULL
; h
= h
->next
)
3960 if (h
->address
== NULL
|| h
->status
< hstatus_unusable
) continue;
3961 sprintf(CS big_buffer
, "H%c%c%s", h
->status
, h
->why
, h
->address
);
3962 (void)write(fd
, big_buffer
, Ustrlen(big_buffer
+3) + 4);
3965 /* The number of bytes written. This is the same for each address. Even
3966 if we sent several copies of the message down the same connection, the
3967 size of each one is the same, and it's that value we have got because
3968 transport_count gets reset before calling transport_write_message(). */
3970 big_buffer
[0] = 'S';
3971 memcpy(big_buffer
+1, &transport_count
, sizeof(transport_count
));
3972 (void)write(fd
, big_buffer
, sizeof(transport_count
) + 1);
3974 /* Information about what happened to each address. Four item types are
3975 used: an optional 'X' item first, for TLS information, then an optional "C"
3976 item for any client-auth info followed by 'R' items for any retry settings,
3977 and finally an 'A' item for the remaining data. */
3979 for(; addr
!= NULL
; addr
= addr
->next
)
3984 /* The certificate verification status goes into the flags */
3986 if (tls_out
.certificate_verified
) setflag(addr
, af_cert_verified
);
3988 /* Use an X item only if there's something to send */
3991 if (addr
->cipher
!= NULL
)
3994 sprintf(CS ptr
, "X%.128s", addr
->cipher
);
3996 if (addr
->peerdn
== NULL
) *ptr
++ = 0; else
3998 sprintf(CS ptr
, "%.512s", addr
->peerdn
);
4001 (void)write(fd
, big_buffer
, ptr
- big_buffer
);
4005 if (client_authenticator
)
4008 sprintf(CS big_buffer
, "C1%.64s", client_authenticator
);
4010 (void)write(fd
, big_buffer
, ptr
- big_buffer
);
4012 if (client_authenticated_id
)
4015 sprintf(CS big_buffer
, "C2%.64s", client_authenticated_id
);
4017 (void)write(fd
, big_buffer
, ptr
- big_buffer
);
4020 /* Retry information: for most success cases this will be null. */
4022 for (r
= addr
->retries
; r
!= NULL
; r
= r
->next
)
4025 sprintf(CS big_buffer
, "R%c%.500s", r
->flags
, r
->key
);
4026 ptr
= big_buffer
+ Ustrlen(big_buffer
+2) + 3;
4027 memcpy(ptr
, &(r
->basic_errno
), sizeof(r
->basic_errno
));
4028 ptr
+= sizeof(r
->basic_errno
);
4029 memcpy(ptr
, &(r
->more_errno
), sizeof(r
->more_errno
));
4030 ptr
+= sizeof(r
->more_errno
);
4031 if (r
->message
== NULL
) *ptr
++ = 0; else
4033 sprintf(CS ptr
, "%.512s", r
->message
);
4036 (void)write(fd
, big_buffer
, ptr
- big_buffer
);
4039 /* The rest of the information goes in an 'A' item. */
4041 ptr
= big_buffer
+ 3;
4042 sprintf(CS big_buffer
, "A%c%c", addr
->transport_return
,
4043 addr
->special_action
);
4044 memcpy(ptr
, &(addr
->basic_errno
), sizeof(addr
->basic_errno
));
4045 ptr
+= sizeof(addr
->basic_errno
);
4046 memcpy(ptr
, &(addr
->more_errno
), sizeof(addr
->more_errno
));
4047 ptr
+= sizeof(addr
->more_errno
);
4048 memcpy(ptr
, &(addr
->flags
), sizeof(addr
->flags
));
4049 ptr
+= sizeof(addr
->flags
);
4051 if (addr
->message
== NULL
) *ptr
++ = 0; else
4053 sprintf(CS ptr
, "%.1024s", addr
->message
);
4057 if (addr
->user_message
== NULL
) *ptr
++ = 0; else
4059 sprintf(CS ptr
, "%.1024s", addr
->user_message
);
4063 if (addr
->host_used
== NULL
) *ptr
++ = 0; else
4065 sprintf(CS ptr
, "%.256s", addr
->host_used
->name
);
4067 sprintf(CS ptr
, "%.64s", addr
->host_used
->address
);
4069 memcpy(ptr
, &(addr
->host_used
->port
), sizeof(addr
->host_used
->port
));
4070 ptr
+= sizeof(addr
->host_used
->port
);
4072 (void)write(fd
, big_buffer
, ptr
- big_buffer
);
4075 /* Add termination flag, close the pipe, and that's it. The character
4076 after 'Z' indicates whether continue_transport is now NULL or not.
4077 A change from non-NULL to NULL indicates a problem with a continuing
4080 big_buffer
[0] = 'Z';
4081 big_buffer
[1] = (continue_transport
== NULL
)? '0' : '1';
4082 (void)write(fd
, big_buffer
, 2);
4087 /* Back in the mainline: close the unwanted half of the pipe. */
4089 (void)close(pfd
[pipe_write
]);
4091 /* Fork failed; defer with error message */
4095 (void)close(pfd
[pipe_read
]);
4096 remote_post_process(addr
, LOG_MAIN
|LOG_PANIC
,
4097 string_sprintf("fork failed for remote delivery to %s: %s",
4098 addr
->domain
, strerror(errno
)), fallback
);
4102 /* Fork succeeded; increment the count, and remember relevant data for
4103 when the process finishes. */
4106 parlist
[poffset
].addrlist
= parlist
[poffset
].addr
= addr
;
4107 parlist
[poffset
].pid
= pid
;
4108 parlist
[poffset
].fd
= pfd
[pipe_read
];
4109 parlist
[poffset
].done
= FALSE
;
4110 parlist
[poffset
].msg
= NULL
;
4111 parlist
[poffset
].return_path
= return_path
;
4113 /* If the process we've just started is sending a message down an existing
4114 channel, wait for it now. This ensures that only one such process runs at
4115 once, whatever the value of remote_max parallel. Otherwise, we might try to
4116 send two or more messages simultaneously down the same channel. This could
4117 happen if there are different domains that include the same host in otherwise
4118 different host lists.
4120 Also, if the transport closes down the channel, this information gets back
4121 (continue_transport gets set to NULL) before we consider any other addresses
4124 if (continue_transport
!= NULL
) par_reduce(0, fallback
);
4126 /* Otherwise, if we are running in the test harness, wait a bit, to let the
4127 newly created process get going before we create another process. This should
4128 ensure repeatability in the tests. We only need to wait a tad. */
4130 else if (running_in_test_harness
) millisleep(500);
4133 /* Reached the end of the list of addresses. Wait for all the subprocesses that
4134 are still running and post-process their addresses. */
4136 par_reduce(0, fallback
);
4143 /*************************************************
4144 * Split an address into local part and domain *
4145 *************************************************/
4147 /* This function initializes an address for routing by splitting it up into a
4148 local part and a domain. The local part is set up twice - once in its original
4149 casing, and once in lower case, and it is dequoted. We also do the "percent
4150 hack" for configured domains. This may lead to a DEFER result if a lookup
4151 defers. When a percent-hacking takes place, we insert a copy of the original
4152 address as a new parent of this address, as if we have had a redirection.
4155 addr points to an addr_item block containing the address
4158 DEFER - could not determine if domain is %-hackable
4162 deliver_split_address(address_item
*addr
)
4164 uschar
*address
= addr
->address
;
4165 uschar
*domain
= Ustrrchr(address
, '@');
4167 int len
= domain
- address
;
4169 addr
->domain
= string_copylc(domain
+1); /* Domains are always caseless */
4171 /* The implication in the RFCs (though I can't say I've seen it spelled out
4172 explicitly) is that quoting should be removed from local parts at the point
4173 where they are locally interpreted. [The new draft "821" is more explicit on
4174 this, Jan 1999.] We know the syntax is valid, so this can be done by simply
4175 removing quoting backslashes and any unquoted doublequotes. */
4177 t
= addr
->cc_local_part
= store_get(len
+1);
4180 register int c
= *address
++;
4181 if (c
== '\"') continue;
4191 /* We do the percent hack only for those domains that are listed in
4192 percent_hack_domains. A loop is required, to copy with multiple %-hacks. */
4194 if (percent_hack_domains
!= NULL
)
4197 uschar
*new_address
= NULL
;
4198 uschar
*local_part
= addr
->cc_local_part
;
4200 deliver_domain
= addr
->domain
; /* set $domain */
4202 while ((rc
= match_isinlist(deliver_domain
, &percent_hack_domains
, 0,
4203 &domainlist_anchor
, addr
->domain_cache
, MCL_DOMAIN
, TRUE
, NULL
))
4205 (t
= Ustrrchr(local_part
, '%')) != NULL
)
4207 new_address
= string_copy(local_part
);
4208 new_address
[t
- local_part
] = '@';
4209 deliver_domain
= string_copylc(t
+1);
4210 local_part
= string_copyn(local_part
, t
- local_part
);
4213 if (rc
== DEFER
) return DEFER
; /* lookup deferred */
4215 /* If hackery happened, set up new parent and alter the current address. */
4217 if (new_address
!= NULL
)
4219 address_item
*new_parent
= store_get(sizeof(address_item
));
4220 *new_parent
= *addr
;
4221 addr
->parent
= new_parent
;
4222 addr
->address
= new_address
;
4223 addr
->unique
= string_copy(new_address
);
4224 addr
->domain
= deliver_domain
;
4225 addr
->cc_local_part
= local_part
;
4226 DEBUG(D_deliver
) debug_printf("%%-hack changed address to: %s\n",
4231 /* Create the lowercased version of the final local part, and make that the
4232 default one to be used. */
4234 addr
->local_part
= addr
->lc_local_part
= string_copylc(addr
->cc_local_part
);
4241 /*************************************************
4242 * Get next error message text *
4243 *************************************************/
4245 /* If f is not NULL, read the next "paragraph", from a customized error message
4246 text file, terminated by a line containing ****, and expand it.
4249 f NULL or a file to read from
4250 which string indicating which string (for errors)
4252 Returns: NULL or an expanded string
4256 next_emf(FILE *f
, uschar
*which
)
4260 uschar
*para
, *yield
;
4263 if (f
== NULL
) return NULL
;
4265 if (Ufgets(buffer
, sizeof(buffer
), f
) == NULL
||
4266 Ustrcmp(buffer
, "****\n") == 0) return NULL
;
4268 para
= store_get(size
);
4271 para
= string_cat(para
, &size
, &ptr
, buffer
, Ustrlen(buffer
));
4272 if (Ufgets(buffer
, sizeof(buffer
), f
) == NULL
||
4273 Ustrcmp(buffer
, "****\n") == 0) break;
4277 yield
= expand_string(para
);
4278 if (yield
!= NULL
) return yield
;
4280 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand string from "
4281 "bounce_message_file or warn_message_file (%s): %s", which
,
4282 expand_string_message
);
4289 /*************************************************
4290 * Close down a passed transport channel *
4291 *************************************************/
4293 /* This function is called when a passed transport channel cannot be used.
4294 It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED
4295 so that the function call can be the argument of a "return" statement.
4298 Returns: DELIVER_NOT_ATTEMPTED
4302 continue_closedown(void)
4304 if (continue_transport
!= NULL
)
4306 transport_instance
*t
;
4307 for (t
= transports
; t
!= NULL
; t
= t
->next
)
4309 if (Ustrcmp(t
->name
, continue_transport
) == 0)
4311 if (t
->info
->closedown
!= NULL
) (t
->info
->closedown
)(t
);
4316 return DELIVER_NOT_ATTEMPTED
;
4322 /*************************************************
4323 * Print address information *
4324 *************************************************/
4326 /* This function is called to output an address, or information about an
4327 address, for bounce or defer messages. If the hide_child flag is set, all we
4328 output is the original ancestor address.
4331 addr points to the address
4332 f the FILE to print to
4333 si an initial string
4334 sc a continuation string for before "generated"
4337 Returns: TRUE if the address is not hidden
4341 print_address_information(address_item
*addr
, FILE *f
, uschar
*si
, uschar
*sc
,
4345 uschar
*printed
= US
"";
4346 address_item
*ancestor
= addr
;
4347 while (ancestor
->parent
!= NULL
) ancestor
= ancestor
->parent
;
4349 fprintf(f
, "%s", CS si
);
4351 if (addr
->parent
!= NULL
&& testflag(addr
, af_hide_child
))
4353 printed
= US
"an undisclosed address";
4356 else if (!testflag(addr
, af_pfr
) || addr
->parent
== NULL
)
4357 printed
= addr
->address
;
4361 uschar
*s
= addr
->address
;
4364 if (addr
->address
[0] == '>') { ss
= US
"mail"; s
++; }
4365 else if (addr
->address
[0] == '|') ss
= US
"pipe";
4368 fprintf(f
, "%s to %s%sgenerated by ", ss
, s
, sc
);
4369 printed
= addr
->parent
->address
;
4372 fprintf(f
, "%s", CS
string_printing(printed
));
4374 if (ancestor
!= addr
)
4376 uschar
*original
= (ancestor
->onetime_parent
== NULL
)?
4377 ancestor
->address
: ancestor
->onetime_parent
;
4378 if (strcmpic(original
, printed
) != 0)
4379 fprintf(f
, "%s(%sgenerated from %s)", sc
,
4380 (ancestor
!= addr
->parent
)? "ultimately " : "",
4381 string_printing(original
));
4384 fprintf(f
, "%s", CS se
);
4392 /*************************************************
4393 * Print error for an address *
4394 *************************************************/
4396 /* This function is called to print the error information out of an address for
4397 a bounce or a warning message. It tries to format the message reasonably by
4398 introducing newlines. All lines are indented by 4; the initial printing
4399 position must be set before calling.
4401 This function used always to print the error. Nowadays we want to restrict it
4402 to cases such as LMTP/SMTP errors from a remote host, and errors from :fail:
4403 and filter "fail". We no longer pass other information willy-nilly in bounce
4404 and warning messages. Text in user_message is always output; text in message
4405 only if the af_pass_message flag is set.
4409 f the FILE to print on
4416 print_address_error(address_item
*addr
, FILE *f
, uschar
*t
)
4418 int count
= Ustrlen(t
);
4419 uschar
*s
= testflag(addr
, af_pass_message
)? addr
->message
: NULL
;
4423 if (addr
->user_message
!= NULL
) s
= addr
->user_message
; else return;
4426 fprintf(f
, "\n %s", t
);
4430 if (*s
== '\\' && s
[1] == 'n')
4440 if (*s
++ == ':' && isspace(*s
) && count
> 45)
4442 fprintf(f
, "\n "); /* sic (because space follows) */
4454 /*************************************************
4455 * Check list of addresses for duplication *
4456 *************************************************/
4458 /* This function was introduced when the test for duplicate addresses that are
4459 not pipes, files, or autoreplies was moved from the middle of routing to when
4460 routing was complete. That was to fix obscure cases when the routing history
4461 affects the subsequent routing of identical addresses. This function is called
4462 after routing, to check that the final routed addresses are not duplicates.
4464 If we detect a duplicate, we remember what it is a duplicate of. Note that
4465 pipe, file, and autoreply de-duplication is handled during routing, so we must
4466 leave such "addresses" alone here, as otherwise they will incorrectly be
4469 Argument: address of list anchor
4474 do_duplicate_check(address_item
**anchor
)
4477 while ((addr
= *anchor
) != NULL
)
4480 if (testflag(addr
, af_pfr
))
4482 anchor
= &(addr
->next
);
4484 else if ((tnode
= tree_search(tree_duplicates
, addr
->unique
)) != NULL
)
4486 DEBUG(D_deliver
|D_route
)
4487 debug_printf("%s is a duplicate address: discarded\n", addr
->unique
);
4488 *anchor
= addr
->next
;
4489 addr
->dupof
= tnode
->data
.ptr
;
4490 addr
->next
= addr_duplicate
;
4491 addr_duplicate
= addr
;
4495 tree_add_duplicate(addr
->unique
, addr
);
4496 anchor
= &(addr
->next
);
4504 /*************************************************
4505 * Deliver one message *
4506 *************************************************/
4508 /* This is the function which is called when a message is to be delivered. It
4509 is passed the id of the message. It is possible that the message no longer
4510 exists, if some other process has delivered it, and it is also possible that
4511 the message is being worked on by another process, in which case the data file
4514 If no delivery is attempted for any of the above reasons, the function returns
4515 DELIVER_NOT_ATTEMPTED.
4517 If the give_up flag is set true, do not attempt any deliveries, but instead
4518 fail all outstanding addresses and return the message to the sender (or
4521 A delivery operation has a process all to itself; we never deliver more than
4522 one message in the same process. Therefore we needn't worry too much about
4526 id the id of the message to be delivered
4527 forced TRUE if delivery was forced by an administrator; this overrides
4528 retry delays and causes a delivery to be tried regardless
4529 give_up TRUE if an administrator has requested that delivery attempts
4532 Returns: When the global variable mua_wrapper is FALSE:
4533 DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made
4534 DELIVER_NOT_ATTEMPTED otherwise (see comment above)
4535 When the global variable mua_wrapper is TRUE:
4536 DELIVER_MUA_SUCCEEDED if delivery succeeded
4537 DELIVER_MUA_FAILED if delivery failed
4538 DELIVER_NOT_ATTEMPTED if not attempted (should not occur)
4542 deliver_message(uschar
*id
, BOOL forced
, BOOL give_up
)
4545 int final_yield
= DELIVER_ATTEMPTED_NORMAL
;
4546 time_t now
= time(NULL
);
4547 address_item
*addr_last
= NULL
;
4548 uschar
*filter_message
= NULL
;
4550 int process_recipients
= RECIP_ACCEPT
;
4553 extern int acl_where
;
4555 uschar
*info
= (queue_run_pid
== (pid_t
)0)?
4556 string_sprintf("delivering %s", id
) :
4557 string_sprintf("delivering %s (queue run pid %d)", id
, queue_run_pid
);
4559 /* If the D_process_info bit is on, set_process_info() will output debugging
4560 information. If not, we want to show this initial information if D_deliver or
4561 D_queue_run is set or in verbose mode. */
4563 set_process_info("%s", info
);
4565 if ((debug_selector
& D_process_info
) == 0 &&
4566 (debug_selector
& (D_deliver
|D_queue_run
|D_v
)) != 0)
4567 debug_printf("%s\n", info
);
4569 /* Ensure that we catch any subprocesses that are created. Although Exim
4570 sets SIG_DFL as its initial default, some routes through the code end up
4571 here with it set to SIG_IGN - cases where a non-synchronous delivery process
4572 has been forked, but no re-exec has been done. We use sigaction rather than
4573 plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be
4574 sure it is turned off. (There was a problem on AIX with this.) */
4578 struct sigaction act
;
4579 act
.sa_handler
= SIG_DFL
;
4580 sigemptyset(&(act
.sa_mask
));
4582 sigaction(SIGCHLD
, &act
, NULL
);
4585 signal(SIGCHLD
, SIG_DFL
);
4588 /* Make the forcing flag available for routers and transports, set up the
4589 global message id field, and initialize the count for returned files and the
4590 message size. This use of strcpy() is OK because the length id is checked when
4591 it is obtained from a command line (the -M or -q options), and otherwise it is
4592 known to be a valid message id. */
4594 Ustrcpy(message_id
, id
);
4595 deliver_force
= forced
;
4599 /* Initialize some flags */
4601 update_spool
= FALSE
;
4602 remove_journal
= TRUE
;
4604 /* Set a known context for any ACLs we call via expansions */
4605 acl_where
= ACL_WHERE_DELIVERY
;
4607 /* Reset the random number generator, so that if several delivery processes are
4608 started from a queue runner that has already used random numbers (for sorting),
4609 they don't all get the same sequence. */
4613 /* Open and lock the message's data file. Exim locks on this one because the
4614 header file may get replaced as it is re-written during the delivery process.
4615 Any failures cause messages to be written to the log, except for missing files
4616 while queue running - another process probably completed delivery. As part of
4617 opening the data file, message_subdir gets set. */
4619 if (!spool_open_datafile(id
))
4620 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4622 /* The value of message_size at this point has been set to the data length,
4623 plus one for the blank line that notionally precedes the data. */
4625 /* Now read the contents of the header file, which will set up the headers in
4626 store, and also the list of recipients and the tree of non-recipients and
4627 assorted flags. It updates message_size. If there is a reading or format error,
4628 give up; if the message has been around for sufficiently long, remove it. */
4630 sprintf(CS spoolname
, "%s-H", id
);
4631 if ((rc
= spool_read_header(spoolname
, TRUE
, TRUE
)) != spool_read_OK
)
4633 if (errno
== ERRNO_SPOOLFORMAT
)
4635 struct stat statbuf
;
4636 sprintf(CS big_buffer
, "%s/input/%s/%s", spool_directory
, message_subdir
,
4638 if (Ustat(big_buffer
, &statbuf
) == 0)
4639 log_write(0, LOG_MAIN
, "Format error in spool file %s: "
4640 "size=" OFF_T_FMT
, spoolname
, statbuf
.st_size
);
4641 else log_write(0, LOG_MAIN
, "Format error in spool file %s", spoolname
);
4644 log_write(0, LOG_MAIN
, "Error reading spool file %s: %s", spoolname
,
4647 /* If we managed to read the envelope data, received_time contains the
4648 time the message was received. Otherwise, we can calculate it from the
4651 if (rc
!= spool_read_hdrerror
)
4654 for (i
= 0; i
< 6; i
++)
4655 received_time
= received_time
* BASE_62
+ tab62
[id
[i
] - '0'];
4658 /* If we've had this malformed message too long, sling it. */
4660 if (now
- received_time
> keep_malformed
)
4662 sprintf(CS spoolname
, "%s/msglog/%s/%s", spool_directory
, message_subdir
, id
);
4664 sprintf(CS spoolname
, "%s/input/%s/%s-D", spool_directory
, message_subdir
, id
);
4666 sprintf(CS spoolname
, "%s/input/%s/%s-H", spool_directory
, message_subdir
, id
);
4668 sprintf(CS spoolname
, "%s/input/%s/%s-J", spool_directory
, message_subdir
, id
);
4670 log_write(0, LOG_MAIN
, "Message removed because older than %s",
4671 readconf_printtime(keep_malformed
));
4674 (void)close(deliver_datafile
);
4675 deliver_datafile
= -1;
4676 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4679 /* The spool header file has been read. Look to see if there is an existing
4680 journal file for this message. If there is, it means that a previous delivery
4681 attempt crashed (program or host) before it could update the spool header file.
4682 Read the list of delivered addresses from the journal and add them to the
4683 nonrecipients tree. Then update the spool file. We can leave the journal in
4684 existence, as it will get further successful deliveries added to it in this
4685 run, and it will be deleted if this function gets to its end successfully.
4686 Otherwise it might be needed again. */
4688 sprintf(CS spoolname
, "%s/input/%s/%s-J", spool_directory
, message_subdir
, id
);
4689 jread
= Ufopen(spoolname
, "rb");
4692 while (Ufgets(big_buffer
, big_buffer_size
, jread
) != NULL
)
4694 int n
= Ustrlen(big_buffer
);
4695 big_buffer
[n
-1] = 0;
4696 tree_add_nonrecipient(big_buffer
);
4697 DEBUG(D_deliver
) debug_printf("Previously delivered address %s taken from "
4698 "journal file\n", big_buffer
);
4700 (void)fclose(jread
);
4701 /* Panic-dies on error */
4702 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
4704 else if (errno
!= ENOENT
)
4706 log_write(0, LOG_MAIN
|LOG_PANIC
, "attempt to open journal for reading gave: "
4707 "%s", strerror(errno
));
4708 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4711 /* A null recipients list indicates some kind of disaster. */
4713 if (recipients_list
== NULL
)
4715 (void)close(deliver_datafile
);
4716 deliver_datafile
= -1;
4717 log_write(0, LOG_MAIN
, "Spool error: no recipients for %s", spoolname
);
4718 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4722 /* Handle a message that is frozen. There are a number of different things that
4723 can happen, but in the default situation, unless forced, no delivery is
4728 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
4729 /* Moving to another directory removes the message from Exim's view. Other
4730 tools must be used to deal with it. Logging of this action happens in
4731 spool_move_message() and its subfunctions. */
4733 if (move_frozen_messages
&&
4734 spool_move_message(id
, message_subdir
, US
"", US
"F"))
4735 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4738 /* For all frozen messages (bounces or not), timeout_frozen_after sets the
4739 maximum time to keep messages that are frozen. Thaw if we reach it, with a
4740 flag causing all recipients to be failed. The time is the age of the
4741 message, not the time since freezing. */
4743 if (timeout_frozen_after
> 0 && message_age
>= timeout_frozen_after
)
4745 log_write(0, LOG_MAIN
, "cancelled by timeout_frozen_after");
4746 process_recipients
= RECIP_FAIL_TIMEOUT
;
4749 /* For bounce messages (and others with no sender), thaw if the error message
4750 ignore timer is exceeded. The message will be discarded if this delivery
4753 else if (sender_address
[0] == 0 && message_age
>= ignore_bounce_errors_after
)
4755 log_write(0, LOG_MAIN
, "Unfrozen by errmsg timer");
4758 /* If this is a bounce message, or there's no auto thaw, or we haven't
4759 reached the auto thaw time yet, and this delivery is not forced by an admin
4760 user, do not attempt delivery of this message. Note that forced is set for
4761 continuing messages down the same channel, in order to skip load checking and
4762 ignore hold domains, but we don't want unfreezing in that case. */
4766 if ((sender_address
[0] == 0 ||
4768 now
<= deliver_frozen_at
+ auto_thaw
4771 (!forced
|| !deliver_force_thaw
|| !admin_user
||
4772 continue_hostname
!= NULL
4775 (void)close(deliver_datafile
);
4776 deliver_datafile
= -1;
4777 log_write(L_skip_delivery
, LOG_MAIN
, "Message is frozen");
4778 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4781 /* If delivery was forced (by an admin user), assume a manual thaw.
4782 Otherwise it's an auto thaw. */
4786 deliver_manual_thaw
= TRUE
;
4787 log_write(0, LOG_MAIN
, "Unfrozen by forced delivery");
4789 else log_write(0, LOG_MAIN
, "Unfrozen by auto-thaw");
4792 /* We get here if any of the rules for unfreezing have triggered. */
4794 deliver_freeze
= FALSE
;
4795 update_spool
= TRUE
;
4799 /* Open the message log file if we are using them. This records details of
4800 deliveries, deferments, and failures for the benefit of the mail administrator.
4801 The log is not used by exim itself to track the progress of a message; that is
4802 done by rewriting the header spool file. */
4809 sprintf(CS spoolname
, "%s/msglog/%s/%s", spool_directory
, message_subdir
, id
);
4810 fd
= open_msglog_file(spoolname
, SPOOL_MODE
, &error
);
4814 log_write(0, LOG_MAIN
|LOG_PANIC
, "Couldn't %s message log %s: %s", error
,
4815 spoolname
, strerror(errno
));
4816 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4819 /* Make a C stream out of it. */
4821 message_log
= fdopen(fd
, "a");
4822 if (message_log
== NULL
)
4824 log_write(0, LOG_MAIN
|LOG_PANIC
, "Couldn't fdopen message log %s: %s",
4825 spoolname
, strerror(errno
));
4826 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4831 /* If asked to give up on a message, log who did it, and set the action for all
4836 struct passwd
*pw
= getpwuid(real_uid
);
4837 log_write(0, LOG_MAIN
, "cancelled by %s", (pw
!= NULL
)?
4838 US pw
->pw_name
: string_sprintf("uid %ld", (long int)real_uid
));
4839 process_recipients
= RECIP_FAIL
;
4842 /* Otherwise, if there are too many Received: headers, fail all recipients. */
4844 else if (received_count
> received_headers_max
)
4845 process_recipients
= RECIP_FAIL_LOOP
;
4847 /* Otherwise, if a system-wide, address-independent message filter is
4848 specified, run it now, except in the case when we are failing all recipients as
4849 a result of timeout_frozen_after. If the system filter yields "delivered", then
4850 ignore the true recipients of the message. Failure of the filter file is
4851 logged, and the delivery attempt fails. */
4853 else if (system_filter
!= NULL
&& process_recipients
!= RECIP_FAIL_TIMEOUT
)
4858 redirect_block redirect
;
4860 if (system_filter_uid_set
)
4862 ugid
.uid
= system_filter_uid
;
4863 ugid
.gid
= system_filter_gid
;
4864 ugid
.uid_set
= ugid
.gid_set
= TRUE
;
4868 ugid
.uid_set
= ugid
.gid_set
= FALSE
;
4871 return_path
= sender_address
;
4872 enable_dollar_recipients
= TRUE
; /* Permit $recipients in system filter */
4873 system_filtering
= TRUE
;
4875 /* Any error in the filter file causes a delivery to be abandoned. */
4877 redirect
.string
= system_filter
;
4878 redirect
.isfile
= TRUE
;
4879 redirect
.check_owner
= redirect
.check_group
= FALSE
;
4880 redirect
.owners
= NULL
;
4881 redirect
.owngroups
= NULL
;
4883 redirect
.modemask
= 0;
4885 DEBUG(D_deliver
|D_filter
) debug_printf("running system filter\n");
4888 &redirect
, /* Where the data is */
4889 RDO_DEFER
| /* Turn on all the enabling options */
4890 RDO_FAIL
| /* Leave off all the disabling options */
4895 NULL
, /* No :include: restriction (not used in filter) */
4896 NULL
, /* No sieve vacation directory (not sieve!) */
4897 NULL
, /* No sieve enotify mailto owner (not sieve!) */
4898 NULL
, /* No sieve user address (not sieve!) */
4899 NULL
, /* No sieve subaddress (not sieve!) */
4900 &ugid
, /* uid/gid data */
4901 &addr_new
, /* Where to hang generated addresses */
4902 &filter_message
, /* Where to put error message */
4903 NULL
, /* Don't skip syntax errors */
4904 &filtertype
, /* Will always be set to FILTER_EXIM for this call */
4905 US
"system filter"); /* For error messages */
4907 DEBUG(D_deliver
|D_filter
) debug_printf("system filter returned %d\n", rc
);
4909 if (rc
== FF_ERROR
|| rc
== FF_NONEXIST
)
4911 (void)close(deliver_datafile
);
4912 deliver_datafile
= -1;
4913 log_write(0, LOG_MAIN
|LOG_PANIC
, "Error in system filter: %s",
4914 string_printing(filter_message
));
4915 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
4918 /* Reset things. If the filter message is an empty string, which can happen
4919 for a filter "fail" or "freeze" command with no text, reset it to NULL. */
4921 system_filtering
= FALSE
;
4922 enable_dollar_recipients
= FALSE
;
4923 if (filter_message
!= NULL
&& filter_message
[0] == 0) filter_message
= NULL
;
4925 /* Save the values of the system filter variables so that user filters
4928 memcpy(filter_sn
, filter_n
, sizeof(filter_sn
));
4930 /* The filter can request that delivery of the original addresses be
4935 process_recipients
= RECIP_DEFER
;
4936 deliver_msglog("Delivery deferred by system filter\n");
4937 log_write(0, LOG_MAIN
, "Delivery deferred by system filter");
4940 /* The filter can request that a message be frozen, but this does not
4941 take place if the message has been manually thawed. In that case, we must
4942 unset "delivered", which is forced by the "freeze" command to make -bF
4945 else if (rc
== FF_FREEZE
&& !deliver_manual_thaw
)
4947 deliver_freeze
= TRUE
;
4948 deliver_frozen_at
= time(NULL
);
4949 process_recipients
= RECIP_DEFER
;
4950 frozen_info
= string_sprintf(" by the system filter%s%s",
4951 (filter_message
== NULL
)? US
"" : US
": ",
4952 (filter_message
== NULL
)? US
"" : filter_message
);
4955 /* The filter can request that a message be failed. The error message may be
4956 quite long - it is sent back to the sender in the bounce - but we don't want
4957 to fill up the log with repetitions of it. If it starts with << then the text
4958 between << and >> is written to the log, with the rest left for the bounce
4961 else if (rc
== FF_FAIL
)
4963 uschar
*colon
= US
"";
4964 uschar
*logmsg
= US
"";
4967 process_recipients
= RECIP_FAIL_FILTER
;
4969 if (filter_message
!= NULL
)
4973 if (filter_message
[0] == '<' && filter_message
[1] == '<' &&
4974 (logend
= Ustrstr(filter_message
, ">>")) != NULL
)
4976 logmsg
= filter_message
+ 2;
4977 loglen
= logend
- logmsg
;
4978 filter_message
= logend
+ 2;
4979 if (filter_message
[0] == 0) filter_message
= NULL
;
4983 logmsg
= filter_message
;
4984 loglen
= Ustrlen(filter_message
);
4988 log_write(0, LOG_MAIN
, "cancelled by system filter%s%.*s", colon
, loglen
,
4992 /* Delivery can be restricted only to those recipients (if any) that the
4993 filter specified. */
4995 else if (rc
== FF_DELIVERED
)
4997 process_recipients
= RECIP_IGNORE
;
4998 if (addr_new
== NULL
)
4999 log_write(0, LOG_MAIN
, "=> discarded (system filter)");
5001 log_write(0, LOG_MAIN
, "original recipients ignored (system filter)");
5004 /* If any new addresses were created by the filter, fake up a "parent"
5005 for them. This is necessary for pipes, etc., which are expected to have
5006 parents, and it also gives some sensible logging for others. Allow
5007 pipes, files, and autoreplies, and run them as the filter uid if set,
5008 otherwise as the current uid. */
5010 if (addr_new
!= NULL
)
5012 int uid
= (system_filter_uid_set
)? system_filter_uid
: geteuid();
5013 int gid
= (system_filter_gid_set
)? system_filter_gid
: getegid();
5015 /* The text "system-filter" is tested in transport_set_up_command() and in
5016 set_up_shell_command() in the pipe transport, to enable them to permit
5017 $recipients, so don't change it here without also changing it there. */
5019 address_item
*p
= addr_new
;
5020 address_item
*parent
= deliver_make_addr(US
"system-filter", FALSE
);
5022 parent
->domain
= string_copylc(qualify_domain_recipient
);
5023 parent
->local_part
= US
"system-filter";
5025 /* As part of this loop, we arrange for addr_last to end up pointing
5026 at the final address. This is used if we go on to add addresses for the
5027 original recipients. */
5031 if (parent
->child_count
== SHRT_MAX
)
5032 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "system filter generated more "
5033 "than %d delivery addresses", SHRT_MAX
);
5034 parent
->child_count
++;
5037 if (testflag(p
, af_pfr
))
5043 setflag(p
, af_uid_set
|
5049 /* Find the name of the system filter's appropriate pfr transport */
5051 if (p
->address
[0] == '|')
5054 tpname
= system_filter_pipe_transport
;
5055 address_pipe
= p
->address
;
5057 else if (p
->address
[0] == '>')
5060 tpname
= system_filter_reply_transport
;
5064 if (p
->address
[Ustrlen(p
->address
)-1] == '/')
5066 type
= US
"directory";
5067 tpname
= system_filter_directory_transport
;
5072 tpname
= system_filter_file_transport
;
5074 address_file
= p
->address
;
5077 /* Now find the actual transport, first expanding the name. We have
5078 set address_file or address_pipe above. */
5082 uschar
*tmp
= expand_string(tpname
);
5083 address_file
= address_pipe
= NULL
;
5085 p
->message
= string_sprintf("failed to expand \"%s\" as a "
5086 "system filter transport name", tpname
);
5091 p
->message
= string_sprintf("system_filter_%s_transport is unset",
5097 transport_instance
*tp
;
5098 for (tp
= transports
; tp
!= NULL
; tp
= tp
->next
)
5100 if (Ustrcmp(tp
->name
, tpname
) == 0)
5107 p
->message
= string_sprintf("failed to find \"%s\" transport "
5108 "for system filter delivery", tpname
);
5111 /* If we couldn't set up a transport, defer the delivery, putting the
5112 error on the panic log as well as the main log. */
5114 if (p
->transport
== NULL
)
5116 address_item
*badp
= p
;
5118 if (addr_last
== NULL
) addr_new
= p
; else addr_last
->next
= p
;
5119 badp
->local_part
= badp
->address
; /* Needed for log line */
5120 post_process_one(badp
, DEFER
, LOG_MAIN
|LOG_PANIC
, DTYPE_ROUTER
, 0);
5123 } /* End of pfr handling */
5125 /* Either a non-pfr delivery, or we found a transport */
5127 DEBUG(D_deliver
|D_filter
)
5128 debug_printf("system filter added %s\n", p
->address
);
5132 } /* Loop through all addr_new addresses */
5137 /* Scan the recipients list, and for every one that is not in the non-
5138 recipients tree, add an addr item to the chain of new addresses. If the pno
5139 value is non-negative, we must set the onetime parent from it. This which
5140 points to the relevant entry in the recipients list.
5142 This processing can be altered by the setting of the process_recipients
5143 variable, which is changed if recipients are to be ignored, failed, or
5144 deferred. This can happen as a result of system filter activity, or if the -Mg
5145 option is used to fail all of them.
5147 Duplicate addresses are handled later by a different tree structure; we can't
5148 just extend the non-recipients tree, because that will be re-written to the
5149 spool if the message is deferred, and in any case there are casing
5150 complications for local addresses. */
5152 if (process_recipients
!= RECIP_IGNORE
)
5154 for (i
= 0; i
< recipients_count
; i
++)
5156 if (tree_search(tree_nonrecipients
, recipients_list
[i
].address
) == NULL
)
5158 recipient_item
*r
= recipients_list
+ i
;
5159 address_item
*new = deliver_make_addr(r
->address
, FALSE
);
5160 new->p
.errors_address
= r
->errors_to
;
5163 new->onetime_parent
= recipients_list
[r
->pno
].address
;
5165 switch (process_recipients
)
5167 /* RECIP_DEFER is set when a system filter freezes a message. */
5170 new->next
= addr_defer
;
5175 /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
5178 case RECIP_FAIL_FILTER
:
5180 (filter_message
== NULL
)? US
"delivery cancelled" : filter_message
;
5181 setflag(new, af_pass_message
);
5182 goto RECIP_QUEUE_FAILED
; /* below */
5185 /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older
5186 than the value in timeout_frozen_after. Treat non-bounce messages
5187 similarly to -Mg; for bounce messages we just want to discard, so
5188 don't put the address on the failed list. The timeout has already
5191 case RECIP_FAIL_TIMEOUT
:
5192 new->message
= US
"delivery cancelled; message timed out";
5193 goto RECIP_QUEUE_FAILED
; /* below */
5196 /* RECIP_FAIL is set when -Mg has been used. */
5199 new->message
= US
"delivery cancelled by administrator";
5202 /* Common code for the failure cases above. If this is not a bounce
5203 message, put the address on the failed list so that it is used to
5204 create a bounce. Otherwise do nothing - this just discards the address.
5205 The incident has already been logged. */
5208 if (sender_address
[0] != 0)
5210 new->next
= addr_failed
;
5216 /* RECIP_FAIL_LOOP is set when there are too many Received: headers
5217 in the message. Process each address as a routing failure; if this
5218 is a bounce message, it will get frozen. */
5220 case RECIP_FAIL_LOOP
:
5221 new->message
= US
"Too many \"Received\" headers - suspected mail loop";
5222 post_process_one(new, FAIL
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5226 /* Value should be RECIP_ACCEPT; take this as the safe default. */
5229 if (addr_new
== NULL
) addr_new
= new; else addr_last
->next
= new;
5239 address_item
*p
= addr_new
;
5240 debug_printf("Delivery address list:\n");
5243 debug_printf(" %s %s\n", p
->address
, (p
->onetime_parent
== NULL
)? US
"" :
5249 /* Set up the buffers used for copying over the file when delivering. */
5251 deliver_in_buffer
= store_malloc(DELIVER_IN_BUFFER_SIZE
);
5252 deliver_out_buffer
= store_malloc(DELIVER_OUT_BUFFER_SIZE
);
5256 /* Until there are no more new addresses, handle each one as follows:
5258 . If this is a generated address (indicated by the presence of a parent
5259 pointer) then check to see whether it is a pipe, file, or autoreply, and
5260 if so, handle it directly here. The router that produced the address will
5261 have set the allow flags into the address, and also set the uid/gid required.
5262 Having the routers generate new addresses and then checking them here at
5263 the outer level is tidier than making each router do the checking, and
5264 means that routers don't need access to the failed address queue.
5266 . Break up the address into local part and domain, and make lowercased
5267 versions of these strings. We also make unquoted versions of the local part.
5269 . Handle the percent hack for those domains for which it is valid.
5271 . For child addresses, determine if any of the parents have the same address.
5272 If so, generate a different string for previous delivery checking. Without
5273 this code, if the address spqr generates spqr via a forward or alias file,
5274 delivery of the generated spqr stops further attempts at the top level spqr,
5275 which is not what is wanted - it may have generated other addresses.
5277 . Check on the retry database to see if routing was previously deferred, but
5278 only if in a queue run. Addresses that are to be routed are put on the
5279 addr_route chain. Addresses that are to be deferred are put on the
5280 addr_defer chain. We do all the checking first, so as not to keep the
5281 retry database open any longer than necessary.
5283 . Now we run the addresses through the routers. A router may put the address
5284 on either the addr_local or the addr_remote chain for local or remote
5285 delivery, respectively, or put it on the addr_failed chain if it is
5286 undeliveable, or it may generate child addresses and put them on the
5287 addr_new chain, or it may defer an address. All the chain anchors are
5288 passed as arguments so that the routers can be called for verification
5291 . If new addresses have been generated by the routers, da capo.
5294 header_rewritten
= FALSE
; /* No headers rewritten yet */
5295 while (addr_new
!= NULL
) /* Loop until all addresses dealt with */
5297 address_item
*addr
, *parent
;
5298 dbm_file
= dbfn_open(US
"retry", O_RDONLY
, &dbblock
, FALSE
);
5300 /* Failure to open the retry database is treated the same as if it does
5301 not exist. In both cases, dbm_file is NULL. */
5303 if (dbm_file
== NULL
)
5305 DEBUG(D_deliver
|D_retry
|D_route
|D_hints_lookup
)
5306 debug_printf("no retry data available\n");
5309 /* Scan the current batch of new addresses, to handle pipes, files and
5310 autoreplies, and determine which others are ready for routing. */
5312 while (addr_new
!= NULL
)
5317 dbdata_retry
*domain_retry_record
;
5318 dbdata_retry
*address_retry_record
;
5321 addr_new
= addr
->next
;
5323 DEBUG(D_deliver
|D_retry
|D_route
)
5325 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
5326 debug_printf("Considering: %s\n", addr
->address
);
5329 /* Handle generated address that is a pipe or a file or an autoreply. */
5331 if (testflag(addr
, af_pfr
))
5333 /* If an autoreply in a filter could not generate a syntactically valid
5334 address, give up forthwith. Set af_ignore_error so that we don't try to
5335 generate a bounce. */
5337 if (testflag(addr
, af_bad_reply
))
5339 addr
->basic_errno
= ERRNO_BADADDRESS2
;
5340 addr
->local_part
= addr
->address
;
5342 US
"filter autoreply generated syntactically invalid recipient";
5343 setflag(addr
, af_ignore_error
);
5344 (void)post_process_one(addr
, FAIL
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5345 continue; /* with the next new address */
5348 /* If two different users specify delivery to the same pipe or file or
5349 autoreply, there should be two different deliveries, so build a unique
5350 string that incorporates the original address, and use this for
5351 duplicate testing and recording delivery, and also for retrying. */
5354 string_sprintf("%s:%s", addr
->address
, addr
->parent
->unique
+
5355 (testflag(addr
->parent
, af_homonym
)? 3:0));
5357 addr
->address_retry_key
= addr
->domain_retry_key
=
5358 string_sprintf("T:%s", addr
->unique
);
5360 /* If a filter file specifies two deliveries to the same pipe or file,
5361 we want to de-duplicate, but this is probably not wanted for two mail
5362 commands to the same address, where probably both should be delivered.
5363 So, we have to invent a different unique string in that case. Just
5364 keep piling '>' characters on the front. */
5366 if (addr
->address
[0] == '>')
5368 while (tree_search(tree_duplicates
, addr
->unique
) != NULL
)
5369 addr
->unique
= string_sprintf(">%s", addr
->unique
);
5372 else if ((tnode
= tree_search(tree_duplicates
, addr
->unique
)) != NULL
)
5374 DEBUG(D_deliver
|D_route
)
5375 debug_printf("%s is a duplicate address: discarded\n", addr
->address
);
5376 addr
->dupof
= tnode
->data
.ptr
;
5377 addr
->next
= addr_duplicate
;
5378 addr_duplicate
= addr
;
5382 DEBUG(D_deliver
|D_route
) debug_printf("unique = %s\n", addr
->unique
);
5384 /* Check for previous delivery */
5386 if (tree_search(tree_nonrecipients
, addr
->unique
) != NULL
)
5388 DEBUG(D_deliver
|D_route
)
5389 debug_printf("%s was previously delivered: discarded\n", addr
->address
);
5390 child_done(addr
, tod_stamp(tod_log
));
5394 /* Save for checking future duplicates */
5396 tree_add_duplicate(addr
->unique
, addr
);
5398 /* Set local part and domain */
5400 addr
->local_part
= addr
->address
;
5401 addr
->domain
= addr
->parent
->domain
;
5403 /* Ensure that the delivery is permitted. */
5405 if (testflag(addr
, af_file
))
5407 if (!testflag(addr
, af_allow_file
))
5409 addr
->basic_errno
= ERRNO_FORBIDFILE
;
5410 addr
->message
= US
"delivery to file forbidden";
5411 (void)post_process_one(addr
, FAIL
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5412 continue; /* with the next new address */
5415 else if (addr
->address
[0] == '|')
5417 if (!testflag(addr
, af_allow_pipe
))
5419 addr
->basic_errno
= ERRNO_FORBIDPIPE
;
5420 addr
->message
= US
"delivery to pipe forbidden";
5421 (void)post_process_one(addr
, FAIL
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5422 continue; /* with the next new address */
5425 else if (!testflag(addr
, af_allow_reply
))
5427 addr
->basic_errno
= ERRNO_FORBIDREPLY
;
5428 addr
->message
= US
"autoreply forbidden";
5429 (void)post_process_one(addr
, FAIL
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5430 continue; /* with the next new address */
5433 /* If the errno field is already set to BADTRANSPORT, it indicates
5434 failure to expand a transport string, or find the associated transport,
5435 or an unset transport when one is required. Leave this test till now so
5436 that the forbid errors are given in preference. */
5438 if (addr
->basic_errno
== ERRNO_BADTRANSPORT
)
5440 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5444 /* Treat /dev/null as a special case and abandon the delivery. This
5445 avoids having to specify a uid on the transport just for this case.
5446 Arrange for the transport name to be logged as "**bypassed**". */
5448 if (Ustrcmp(addr
->address
, "/dev/null") == 0)
5450 uschar
*save
= addr
->transport
->name
;
5451 addr
->transport
->name
= US
"**bypassed**";
5452 (void)post_process_one(addr
, OK
, LOG_MAIN
, DTYPE_TRANSPORT
, '=');
5453 addr
->transport
->name
= save
;
5454 continue; /* with the next new address */
5457 /* Pipe, file, or autoreply delivery is to go ahead as a normal local
5460 DEBUG(D_deliver
|D_route
)
5461 debug_printf("queued for %s transport\n", addr
->transport
->name
);
5462 addr
->next
= addr_local
;
5464 continue; /* with the next new address */
5467 /* Handle normal addresses. First, split up into local part and domain,
5468 handling the %-hack if necessary. There is the possibility of a defer from
5469 a lookup in percent_hack_domains. */
5471 if ((rc
= deliver_split_address(addr
)) == DEFER
)
5473 addr
->message
= US
"cannot check percent_hack_domains";
5474 addr
->basic_errno
= ERRNO_LISTDEFER
;
5475 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_NONE
, 0);
5479 /* Check to see if the domain is held. If so, proceed only if the
5480 delivery was forced by hand. */
5482 deliver_domain
= addr
->domain
; /* set $domain */
5483 if (!forced
&& hold_domains
!= NULL
&&
5484 (rc
= match_isinlist(addr
->domain
, &hold_domains
, 0,
5485 &domainlist_anchor
, addr
->domain_cache
, MCL_DOMAIN
, TRUE
,
5490 addr
->message
= US
"hold_domains lookup deferred";
5491 addr
->basic_errno
= ERRNO_LISTDEFER
;
5495 addr
->message
= US
"domain is held";
5496 addr
->basic_errno
= ERRNO_HELD
;
5498 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_NONE
, 0);
5502 /* Now we can check for duplicates and previously delivered addresses. In
5503 order to do this, we have to generate a "unique" value for each address,
5504 because there may be identical actual addresses in a line of descendents.
5505 The "unique" field is initialized to the same value as the "address" field,
5506 but gets changed here to cope with identically-named descendents. */
5508 for (parent
= addr
->parent
; parent
!= NULL
; parent
= parent
->parent
)
5509 if (strcmpic(addr
->address
, parent
->address
) == 0) break;
5511 /* If there's an ancestor with the same name, set the homonym flag. This
5512 influences how deliveries are recorded. Then add a prefix on the front of
5513 the unique address. We use \n\ where n starts at 0 and increases each time.
5514 It is unlikely to pass 9, but if it does, it may look odd but will still
5515 work. This means that siblings or cousins with the same names are treated
5516 as duplicates, which is what we want. */
5520 setflag(addr
, af_homonym
);
5521 if (parent
->unique
[0] != '\\')
5522 addr
->unique
= string_sprintf("\\0\\%s", addr
->address
);
5524 addr
->unique
= string_sprintf("\\%c\\%s", parent
->unique
[1] + 1,
5528 /* Ensure that the domain in the unique field is lower cased, because
5529 domains are always handled caselessly. */
5531 p
= Ustrrchr(addr
->unique
, '@');
5532 while (*p
!= 0) { *p
= tolower(*p
); p
++; }
5534 DEBUG(D_deliver
|D_route
) debug_printf("unique = %s\n", addr
->unique
);
5536 if (tree_search(tree_nonrecipients
, addr
->unique
) != NULL
)
5538 DEBUG(D_deliver
|D_route
)
5539 debug_printf("%s was previously delivered: discarded\n", addr
->unique
);
5540 child_done(addr
, tod_stamp(tod_log
));
5544 /* Get the routing retry status, saving the two retry keys (with and
5545 without the local part) for subsequent use. If there is no retry record for
5546 the standard address routing retry key, we look for the same key with the
5547 sender attached, because this form is used by the smtp transport after a
5548 4xx response to RCPT when address_retry_include_sender is true. */
5550 addr
->domain_retry_key
= string_sprintf("R:%s", addr
->domain
);
5551 addr
->address_retry_key
= string_sprintf("R:%s@%s", addr
->local_part
,
5554 if (dbm_file
== NULL
)
5555 domain_retry_record
= address_retry_record
= NULL
;
5558 domain_retry_record
= dbfn_read(dbm_file
, addr
->domain_retry_key
);
5559 if (domain_retry_record
!= NULL
&&
5560 now
- domain_retry_record
->time_stamp
> retry_data_expire
)
5561 domain_retry_record
= NULL
; /* Ignore if too old */
5563 address_retry_record
= dbfn_read(dbm_file
, addr
->address_retry_key
);
5564 if (address_retry_record
!= NULL
&&
5565 now
- address_retry_record
->time_stamp
> retry_data_expire
)
5566 address_retry_record
= NULL
; /* Ignore if too old */
5568 if (address_retry_record
== NULL
)
5570 uschar
*altkey
= string_sprintf("%s:<%s>", addr
->address_retry_key
,
5572 address_retry_record
= dbfn_read(dbm_file
, altkey
);
5573 if (address_retry_record
!= NULL
&&
5574 now
- address_retry_record
->time_stamp
> retry_data_expire
)
5575 address_retry_record
= NULL
; /* Ignore if too old */
5579 DEBUG(D_deliver
|D_retry
)
5581 if (domain_retry_record
== NULL
)
5582 debug_printf("no domain retry record\n");
5583 if (address_retry_record
== NULL
)
5584 debug_printf("no address retry record\n");
5587 /* If we are sending a message down an existing SMTP connection, we must
5588 assume that the message which created the connection managed to route
5589 an address to that connection. We do not want to run the risk of taking
5590 a long time over routing here, because if we do, the server at the other
5591 end of the connection may time it out. This is especially true for messages
5592 with lots of addresses. For this kind of delivery, queue_running is not
5593 set, so we would normally route all addresses. We take a pragmatic approach
5594 and defer routing any addresses that have any kind of domain retry record.
5595 That is, we don't even look at their retry times. It doesn't matter if this
5596 doesn't work occasionally. This is all just an optimization, after all.
5598 The reason for not doing the same for address retries is that they normally
5599 arise from 4xx responses, not DNS timeouts. */
5601 if (continue_hostname
!= NULL
&& domain_retry_record
!= NULL
)
5603 addr
->message
= US
"reusing SMTP connection skips previous routing defer";
5604 addr
->basic_errno
= ERRNO_RRETRY
;
5605 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5608 /* If we are in a queue run, defer routing unless there is no retry data or
5609 we've passed the next retry time, or this message is forced. In other
5610 words, ignore retry data when not in a queue run.
5612 However, if the domain retry time has expired, always allow the routing
5613 attempt. If it fails again, the address will be failed. This ensures that
5614 each address is routed at least once, even after long-term routing
5617 If there is an address retry, check that too; just wait for the next
5618 retry time. This helps with the case when the temporary error on the
5619 address was really message-specific rather than address specific, since
5620 it allows other messages through.
5622 We also wait for the next retry time if this is a message sent down an
5623 existing SMTP connection (even though that will be forced). Otherwise there
5624 will be far too many attempts for an address that gets a 4xx error. In
5625 fact, after such an error, we should not get here because, the host should
5626 not be remembered as one this message needs. However, there was a bug that
5627 used to cause this to happen, so it is best to be on the safe side. */
5629 else if (((queue_running
&& !deliver_force
) || continue_hostname
!= NULL
)
5631 ((domain_retry_record
!= NULL
&&
5632 now
< domain_retry_record
->next_try
&&
5633 !domain_retry_record
->expired
)
5635 (address_retry_record
!= NULL
&&
5636 now
< address_retry_record
->next_try
))
5639 addr
->message
= US
"retry time not reached";
5640 addr
->basic_errno
= ERRNO_RRETRY
;
5641 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5644 /* The domain is OK for routing. Remember if retry data exists so it
5645 can be cleaned up after a successful delivery. */
5649 if (domain_retry_record
!= NULL
|| address_retry_record
!= NULL
)
5650 setflag(addr
, af_dr_retry_exists
);
5651 addr
->next
= addr_route
;
5653 DEBUG(D_deliver
|D_route
)
5654 debug_printf("%s: queued for routing\n", addr
->address
);
5658 /* The database is closed while routing is actually happening. Requests to
5659 update it are put on a chain and all processed together at the end. */
5661 if (dbm_file
!= NULL
) dbfn_close(dbm_file
);
5663 /* If queue_domains is set, we don't even want to try routing addresses in
5664 those domains. During queue runs, queue_domains is forced to be unset.
5665 Optimize by skipping this pass through the addresses if nothing is set. */
5667 if (!deliver_force
&& queue_domains
!= NULL
)
5669 address_item
*okaddr
= NULL
;
5670 while (addr_route
!= NULL
)
5672 address_item
*addr
= addr_route
;
5673 addr_route
= addr
->next
;
5675 deliver_domain
= addr
->domain
; /* set $domain */
5676 if ((rc
= match_isinlist(addr
->domain
, &queue_domains
, 0,
5677 &domainlist_anchor
, addr
->domain_cache
, MCL_DOMAIN
, TRUE
, NULL
))
5682 addr
->basic_errno
= ERRNO_LISTDEFER
;
5683 addr
->message
= US
"queue_domains lookup deferred";
5684 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5688 addr
->next
= okaddr
;
5694 addr
->basic_errno
= ERRNO_QUEUE_DOMAIN
;
5695 addr
->message
= US
"domain is in queue_domains";
5696 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5700 addr_route
= okaddr
;
5703 /* Now route those addresses that are not deferred. */
5705 while (addr_route
!= NULL
)
5708 address_item
*addr
= addr_route
;
5709 uschar
*old_domain
= addr
->domain
;
5710 uschar
*old_unique
= addr
->unique
;
5711 addr_route
= addr
->next
;
5714 /* Just in case some router parameter refers to it. */
5716 return_path
= (addr
->p
.errors_address
!= NULL
)?
5717 addr
->p
.errors_address
: sender_address
;
5719 /* If a router defers an address, add a retry item. Whether or not to
5720 use the local part in the key is a property of the router. */
5722 if ((rc
= route_address(addr
, &addr_local
, &addr_remote
, &addr_new
,
5723 &addr_succeed
, v_none
)) == DEFER
)
5724 retry_add_item(addr
, (addr
->router
->retry_use_local_part
)?
5725 string_sprintf("R:%s@%s", addr
->local_part
, addr
->domain
) :
5726 string_sprintf("R:%s", addr
->domain
), 0);
5728 /* Otherwise, if there is an existing retry record in the database, add
5729 retry items to delete both forms. We must also allow for the possibility
5730 of a routing retry that includes the sender address. Since the domain might
5731 have been rewritten (expanded to fully qualified) as a result of routing,
5732 ensure that the rewritten form is also deleted. */
5734 else if (testflag(addr
, af_dr_retry_exists
))
5736 uschar
*altkey
= string_sprintf("%s:<%s>", addr
->address_retry_key
,
5738 retry_add_item(addr
, altkey
, rf_delete
);
5739 retry_add_item(addr
, addr
->address_retry_key
, rf_delete
);
5740 retry_add_item(addr
, addr
->domain_retry_key
, rf_delete
);
5741 if (Ustrcmp(addr
->domain
, old_domain
) != 0)
5742 retry_add_item(addr
, string_sprintf("R:%s", old_domain
), rf_delete
);
5745 /* DISCARD is given for :blackhole: and "seen finish". The event has been
5746 logged, but we need to ensure the address (and maybe parents) is marked
5751 address_done(addr
, tod_stamp(tod_log
));
5752 continue; /* route next address */
5755 /* The address is finished with (failed or deferred). */
5759 (void)post_process_one(addr
, rc
, LOG_MAIN
, DTYPE_ROUTER
, 0);
5760 continue; /* route next address */
5763 /* The address has been routed. If the router changed the domain, it will
5764 also have changed the unique address. We have to test whether this address
5765 has already been delivered, because it's the unique address that finally
5768 if (addr
->unique
!= old_unique
&&
5769 tree_search(tree_nonrecipients
, addr
->unique
) != 0)
5771 DEBUG(D_deliver
|D_route
) debug_printf("%s was previously delivered: "
5772 "discarded\n", addr
->address
);
5773 if (addr_remote
== addr
) addr_remote
= addr
->next
;
5774 else if (addr_local
== addr
) addr_local
= addr
->next
;
5777 /* If the router has same_domain_copy_routing set, we are permitted to copy
5778 the routing for any other addresses with the same domain. This is an
5779 optimisation to save repeated DNS lookups for "standard" remote domain
5780 routing. The option is settable only on routers that generate host lists.
5781 We play it very safe, and do the optimization only if the address is routed
5782 to a remote transport, there are no header changes, and the domain was not
5783 modified by the router. */
5785 if (addr_remote
== addr
&&
5786 addr
->router
->same_domain_copy_routing
&&
5787 addr
->p
.extra_headers
== NULL
&&
5788 addr
->p
.remove_headers
== NULL
&&
5789 old_domain
== addr
->domain
)
5791 address_item
**chain
= &addr_route
;
5792 while (*chain
!= NULL
)
5794 address_item
*addr2
= *chain
;
5795 if (Ustrcmp(addr2
->domain
, addr
->domain
) != 0)
5797 chain
= &(addr2
->next
);
5801 /* Found a suitable address; take it off the routing list and add it to
5802 the remote delivery list. */
5804 *chain
= addr2
->next
;
5805 addr2
->next
= addr_remote
;
5806 addr_remote
= addr2
;
5808 /* Copy the routing data */
5810 addr2
->domain
= addr
->domain
;
5811 addr2
->router
= addr
->router
;
5812 addr2
->transport
= addr
->transport
;
5813 addr2
->host_list
= addr
->host_list
;
5814 addr2
->fallback_hosts
= addr
->fallback_hosts
;
5815 addr2
->p
.errors_address
= addr
->p
.errors_address
;
5816 copyflag(addr2
, addr
, af_hide_child
| af_local_host_removed
);
5818 DEBUG(D_deliver
|D_route
)
5820 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
5822 "Routing for %s copied from %s\n",
5823 addr2
->address
, addr2
->address
, addr
->address
);
5827 } /* Continue with routing the next address. */
5828 } /* Loop to process any child addresses that the routers created, and
5829 any rerouted addresses that got put back on the new chain. */
5832 /* Debugging: show the results of the routing */
5834 DEBUG(D_deliver
|D_retry
|D_route
)
5836 address_item
*p
= addr_local
;
5837 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
5838 debug_printf("After routing:\n Local deliveries:\n");
5841 debug_printf(" %s\n", p
->address
);
5846 debug_printf(" Remote deliveries:\n");
5849 debug_printf(" %s\n", p
->address
);
5854 debug_printf(" Failed addresses:\n");
5857 debug_printf(" %s\n", p
->address
);
5862 debug_printf(" Deferred addresses:\n");
5865 debug_printf(" %s\n", p
->address
);
5870 /* Free any resources that were cached during routing. */
5875 /* These two variables are set only during routing, after check_local_user.
5876 Ensure they are not set in transports. */
5878 local_user_gid
= (gid_t
)(-1);
5879 local_user_uid
= (uid_t
)(-1);
5881 /* Check for any duplicate addresses. This check is delayed until after
5882 routing, because the flexibility of the routing configuration means that
5883 identical addresses with different parentage may end up being redirected to
5884 different addresses. Checking for duplicates too early (as we previously used
5885 to) makes this kind of thing not work. */
5887 do_duplicate_check(&addr_local
);
5888 do_duplicate_check(&addr_remote
);
5890 /* When acting as an MUA wrapper, we proceed only if all addresses route to a
5891 remote transport. The check that they all end up in one transaction happens in
5892 the do_remote_deliveries() function. */
5894 if (mua_wrapper
&& (addr_local
!= NULL
|| addr_failed
!= NULL
||
5895 addr_defer
!= NULL
))
5898 uschar
*which
, *colon
, *msg
;
5900 if (addr_local
!= NULL
)
5905 else if (addr_defer
!= NULL
)
5908 which
= US
"deferred";
5916 while (addr
->parent
!= NULL
) addr
= addr
->parent
;
5918 if (addr
->message
!= NULL
)
5921 msg
= addr
->message
;
5923 else colon
= msg
= US
"";
5925 /* We don't need to log here for a forced failure as it will already
5926 have been logged. Defer will also have been logged, but as a defer, so we do
5927 need to do the failure logging. */
5929 if (addr
!= addr_failed
)
5930 log_write(0, LOG_MAIN
, "** %s routing yielded a %s delivery",
5931 addr
->address
, which
);
5933 /* Always write an error to the caller */
5935 fprintf(stderr
, "routing %s yielded a %s delivery%s%s\n", addr
->address
,
5938 final_yield
= DELIVER_MUA_FAILED
;
5939 addr_failed
= addr_defer
= NULL
; /* So that we remove the message */
5940 goto DELIVERY_TIDYUP
;
5944 /* If this is a run to continue deliveries to an external channel that is
5945 already set up, defer any local deliveries. */
5947 if (continue_transport
!= NULL
)
5949 if (addr_defer
== NULL
) addr_defer
= addr_local
; else
5951 address_item
*addr
= addr_defer
;
5952 while (addr
->next
!= NULL
) addr
= addr
->next
;
5953 addr
->next
= addr_local
;
5959 /* Because address rewriting can happen in the routers, we should not really do
5960 ANY deliveries until all addresses have been routed, so that all recipients of
5961 the message get the same headers. However, this is in practice not always
5962 possible, since sometimes remote addresses give DNS timeouts for days on end.
5963 The pragmatic approach is to deliver what we can now, saving any rewritten
5964 headers so that at least the next lot of recipients benefit from the rewriting
5965 that has already been done.
5967 If any headers have been rewritten during routing, update the spool file to
5968 remember them for all subsequent deliveries. This can be delayed till later if
5969 there is only address to be delivered - if it succeeds the spool write need not
5972 if (header_rewritten
&&
5973 ((addr_local
!= NULL
&&
5974 (addr_local
->next
!= NULL
|| addr_remote
!= NULL
)) ||
5975 (addr_remote
!= NULL
&& addr_remote
->next
!= NULL
)))
5977 /* Panic-dies on error */
5978 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
5979 header_rewritten
= FALSE
;
5983 /* If there are any deliveries to be done, open the journal file. This is used
5984 to record successful deliveries as soon as possible after each delivery is
5985 known to be complete. A file opened with O_APPEND is used so that several
5986 processes can run simultaneously.
5988 The journal is just insurance against crashes. When the spool file is
5989 ultimately updated at the end of processing, the journal is deleted. If a
5990 journal is found to exist at the start of delivery, the addresses listed
5991 therein are added to the non-recipients. */
5993 if (addr_local
!= NULL
|| addr_remote
!= NULL
)
5995 sprintf(CS spoolname
, "%s/input/%s/%s-J", spool_directory
, message_subdir
, id
);
5996 journal_fd
= Uopen(spoolname
, O_WRONLY
|O_APPEND
|O_CREAT
, SPOOL_MODE
);
6000 log_write(0, LOG_MAIN
|LOG_PANIC
, "Couldn't open journal file %s: %s",
6001 spoolname
, strerror(errno
));
6002 return DELIVER_NOT_ATTEMPTED
;
6005 /* Set the close-on-exec flag, make the file owned by Exim, and ensure
6006 that the mode is correct - the group setting doesn't always seem to get
6007 set automatically. */
6009 (void)fcntl(journal_fd
, F_SETFD
, fcntl(journal_fd
, F_GETFD
) | FD_CLOEXEC
);
6010 (void)fchown(journal_fd
, exim_uid
, exim_gid
);
6011 (void)fchmod(journal_fd
, SPOOL_MODE
);
6015 /* Now we can get down to the business of actually doing deliveries. Local
6016 deliveries are done first, then remote ones. If ever the problems of how to
6017 handle fallback transports are figured out, this section can be put into a loop
6018 for handling fallbacks, though the uid switching will have to be revised. */
6020 /* Precompile a regex that is used to recognize a parameter in response
6021 to an LHLO command, if is isn't already compiled. This may be used on both
6022 local and remote LMTP deliveries. */
6024 if (regex_IGNOREQUOTA
== NULL
) regex_IGNOREQUOTA
=
6025 regex_must_compile(US
"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE
, TRUE
);
6027 /* Handle local deliveries */
6029 if (addr_local
!= NULL
)
6031 DEBUG(D_deliver
|D_transport
)
6032 debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
6033 do_local_deliveries();
6034 disable_logging
= FALSE
;
6037 /* If queue_run_local is set, we do not want to attempt any remote deliveries,
6038 so just queue them all. */
6040 if (queue_run_local
)
6042 while (addr_remote
!= NULL
)
6044 address_item
*addr
= addr_remote
;
6045 addr_remote
= addr
->next
;
6047 addr
->basic_errno
= ERRNO_LOCAL_ONLY
;
6048 addr
->message
= US
"remote deliveries suppressed";
6049 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, DTYPE_TRANSPORT
, 0);
6053 /* Handle remote deliveries */
6055 if (addr_remote
!= NULL
)
6057 DEBUG(D_deliver
|D_transport
)
6058 debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
6060 /* Precompile some regex that are used to recognize parameters in response
6061 to an EHLO command, if they aren't already compiled. */
6063 if (regex_PIPELINING
== NULL
) regex_PIPELINING
=
6064 regex_must_compile(US
"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE
, TRUE
);
6066 if (regex_SIZE
== NULL
) regex_SIZE
=
6067 regex_must_compile(US
"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE
, TRUE
);
6069 if (regex_AUTH
== NULL
) regex_AUTH
=
6070 regex_must_compile(US
"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)",
6074 if (regex_STARTTLS
== NULL
) regex_STARTTLS
=
6075 regex_must_compile(US
"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE
, TRUE
);
6078 /* Now sort the addresses if required, and do the deliveries. The yield of
6079 do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
6080 cannot be delivered in one transaction. */
6082 if (remote_sort_domains
!= NULL
) sort_remote_deliveries();
6083 if (!do_remote_deliveries(FALSE
))
6085 log_write(0, LOG_MAIN
, "** mua_wrapper is set but recipients cannot all "
6086 "be delivered in one transaction");
6087 fprintf(stderr
, "delivery to smarthost failed (configuration problem)\n");
6089 final_yield
= DELIVER_MUA_FAILED
;
6090 addr_failed
= addr_defer
= NULL
; /* So that we remove the message */
6091 goto DELIVERY_TIDYUP
;
6094 /* See if any of the addresses that failed got put on the queue for delivery
6095 to their fallback hosts. We do it this way because often the same fallback
6096 host is used for many domains, so all can be sent in a single transaction
6097 (if appropriately configured). */
6099 if (addr_fallback
!= NULL
&& !mua_wrapper
)
6101 DEBUG(D_deliver
) debug_printf("Delivering to fallback hosts\n");
6102 addr_remote
= addr_fallback
;
6103 addr_fallback
= NULL
;
6104 if (remote_sort_domains
!= NULL
) sort_remote_deliveries();
6105 do_remote_deliveries(TRUE
);
6107 disable_logging
= FALSE
;
6111 /* All deliveries are now complete. Ignore SIGTERM during this tidying up
6112 phase, to minimize cases of half-done things. */
6115 debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
6117 /* Root privilege is no longer needed */
6119 exim_setugid(exim_uid
, exim_gid
, FALSE
, US
"post-delivery tidying");
6121 set_process_info("tidying up after delivering %s", message_id
);
6122 signal(SIGTERM
, SIG_IGN
);
6124 /* When we are acting as an MUA wrapper, the smtp transport will either have
6125 succeeded for all addresses, or failed them all in normal cases. However, there
6126 are some setup situations (e.g. when a named port does not exist) that cause an
6127 immediate exit with deferral of all addresses. Convert those into failures. We
6128 do not ever want to retry, nor do we want to send a bounce message. */
6132 if (addr_defer
!= NULL
)
6134 address_item
*addr
, *nextaddr
;
6135 for (addr
= addr_defer
; addr
!= NULL
; addr
= nextaddr
)
6137 log_write(0, LOG_MAIN
, "** %s mua_wrapper forced failure for deferred "
6138 "delivery", addr
->address
);
6139 nextaddr
= addr
->next
;
6140 addr
->next
= addr_failed
;
6146 /* Now all should either have succeeded or failed. */
6148 if (addr_failed
== NULL
) final_yield
= DELIVER_MUA_SUCCEEDED
; else
6150 uschar
*s
= (addr_failed
->user_message
!= NULL
)?
6151 addr_failed
->user_message
: addr_failed
->message
;
6153 fprintf(stderr
, "Delivery failed: ");
6154 if (addr_failed
->basic_errno
> 0)
6156 fprintf(stderr
, "%s", strerror(addr_failed
->basic_errno
));
6157 if (s
!= NULL
) fprintf(stderr
, ": ");
6161 if (addr_failed
->basic_errno
<= 0) fprintf(stderr
, "unknown error");
6163 else fprintf(stderr
, "%s", CS s
);
6164 fprintf(stderr
, "\n");
6166 final_yield
= DELIVER_MUA_FAILED
;
6171 /* In a normal configuration, we now update the retry database. This is done in
6172 one fell swoop at the end in order not to keep opening and closing (and
6173 locking) the database. The code for handling retries is hived off into a
6174 separate module for convenience. We pass it the addresses of the various
6175 chains, because deferred addresses can get moved onto the failed chain if the
6176 retry cutoff time has expired for all alternative destinations. Bypass the
6177 updating of the database if the -N flag is set, which is a debugging thing that
6178 prevents actual delivery. */
6180 else if (!dont_deliver
) retry_update(&addr_defer
, &addr_failed
, &addr_succeed
);
6182 /* If any addresses failed, we must send a message to somebody, unless
6183 af_ignore_error is set, in which case no action is taken. It is possible for
6184 several messages to get sent if there are addresses with different
6187 while (addr_failed
!= NULL
)
6191 uschar
*logtod
= tod_stamp(tod_log
);
6193 address_item
*handled_addr
= NULL
;
6194 address_item
**paddr
;
6195 address_item
*msgchain
= NULL
;
6196 address_item
**pmsgchain
= &msgchain
;
6198 /* There are weird cases when logging is disabled in the transport. However,
6199 there may not be a transport (address failed by a router). */
6201 disable_logging
= FALSE
;
6202 if (addr_failed
->transport
!= NULL
)
6203 disable_logging
= addr_failed
->transport
->disable_logging
;
6206 debug_printf("processing failed address %s\n", addr_failed
->address
);
6208 /* There are only two ways an address in a bounce message can get here:
6210 (1) When delivery was initially deferred, but has now timed out (in the call
6211 to retry_update() above). We can detect this by testing for
6212 af_retry_timedout. If the address does not have its own errors address,
6213 we arrange to ignore the error.
6215 (2) If delivery failures for bounce messages are being ignored. We can detect
6216 this by testing for af_ignore_error. This will also be set if a bounce
6217 message has been autothawed and the ignore_bounce_errors_after time has
6218 passed. It might also be set if a router was explicitly configured to
6219 ignore errors (errors_to = "").
6221 If neither of these cases obtains, something has gone wrong. Log the
6222 incident, but then ignore the error. */
6224 if (sender_address
[0] == 0 && addr_failed
->p
.errors_address
== NULL
)
6226 if (!testflag(addr_failed
, af_retry_timedout
) &&
6227 !testflag(addr_failed
, af_ignore_error
))
6229 log_write(0, LOG_MAIN
|LOG_PANIC
, "internal error: bounce message "
6230 "failure is neither frozen nor ignored (it's been ignored)");
6232 setflag(addr_failed
, af_ignore_error
);
6235 /* If the first address on the list has af_ignore_error set, just remove
6236 it from the list, throw away any saved message file, log it, and
6237 mark the recipient done. */
6239 if (testflag(addr_failed
, af_ignore_error
))
6242 addr_failed
= addr
->next
;
6243 if (addr
->return_filename
!= NULL
) Uunlink(addr
->return_filename
);
6245 log_write(0, LOG_MAIN
, "%s%s%s%s: error ignored",
6247 (addr
->parent
== NULL
)? US
"" : US
" <",
6248 (addr
->parent
== NULL
)? US
"" : addr
->parent
->address
,
6249 (addr
->parent
== NULL
)? US
"" : US
">");
6251 address_done(addr
, logtod
);
6252 child_done(addr
, logtod
);
6253 /* Panic-dies on error */
6254 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
6257 /* Otherwise, handle the sending of a message. Find the error address for
6258 the first address, then send a message that includes all failed addresses
6259 that have the same error address. Note the bounce_recipient is a global so
6260 that it can be accesssed by $bounce_recipient while creating a customized
6265 bounce_recipient
= (addr_failed
->p
.errors_address
== NULL
)?
6266 sender_address
: addr_failed
->p
.errors_address
;
6268 /* Make a subprocess to send a message */
6270 pid
= child_open_exim(&fd
);
6272 /* Creation of child failed */
6275 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Process %d (parent %d) failed to "
6276 "create child process to send failure message: %s", getpid(),
6277 getppid(), strerror(errno
));
6279 /* Creation of child succeeded */
6286 uschar
*bcc
, *emf_text
;
6287 FILE *f
= fdopen(fd
, "wb");
6289 BOOL to_sender
= strcmpic(sender_address
, bounce_recipient
) == 0;
6290 int max
= (bounce_return_size_limit
/DELIVER_IN_BUFFER_SIZE
+ 1) *
6291 DELIVER_IN_BUFFER_SIZE
;
6294 debug_printf("sending error message to: %s\n", bounce_recipient
);
6296 /* Scan the addresses for all that have the same errors address, removing
6297 them from the addr_failed chain, and putting them on msgchain. */
6299 paddr
= &addr_failed
;
6300 for (addr
= addr_failed
; addr
!= NULL
; addr
= *paddr
)
6302 if (Ustrcmp(bounce_recipient
, (addr
->p
.errors_address
== NULL
)?
6303 sender_address
: addr
->p
.errors_address
) != 0)
6305 paddr
= &(addr
->next
); /* Not the same; skip */
6307 else /* The same - dechain */
6309 *paddr
= addr
->next
;
6312 pmsgchain
= &(addr
->next
);
6316 /* Include X-Failed-Recipients: for automatic interpretation, but do
6317 not let any one header line get too long. We do this by starting a
6318 new header every 50 recipients. Omit any addresses for which the
6319 "hide_child" flag is set. */
6321 for (addr
= msgchain
; addr
!= NULL
; addr
= addr
->next
)
6323 if (testflag(addr
, af_hide_child
)) continue;
6330 (rcount
++ == 0)? "X-Failed-Recipients: " : ",\n ",
6331 (testflag(addr
, af_pfr
) && addr
->parent
!= NULL
)?
6332 string_printing(addr
->parent
->address
) :
6333 string_printing(addr
->address
));
6335 if (rcount
> 0) fprintf(f
, "\n");
6337 /* Output the standard headers */
6339 if (errors_reply_to
!= NULL
)
6340 fprintf(f
, "Reply-To: %s\n", errors_reply_to
);
6341 fprintf(f
, "Auto-Submitted: auto-replied\n");
6343 fprintf(f
, "To: %s\n", bounce_recipient
);
6345 /* Open a template file if one is provided. Log failure to open, but
6346 carry on - default texts will be used. */
6348 if (bounce_message_file
!= NULL
)
6350 emf
= Ufopen(bounce_message_file
, "rb");
6352 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to open %s for error "
6353 "message texts: %s", bounce_message_file
, strerror(errno
));
6356 /* Quietly copy to configured additional addresses if required. */
6358 bcc
= moan_check_errorcopy(bounce_recipient
);
6359 if (bcc
!= NULL
) fprintf(f
, "Bcc: %s\n", bcc
);
6361 /* The texts for the message can be read from a template file; if there
6362 isn't one, or if it is too short, built-in texts are used. The first
6363 emf text is a Subject: and any other headers. */
6365 emf_text
= next_emf(emf
, US
"header");
6366 if (emf_text
!= NULL
) fprintf(f
, "%s\n", emf_text
); else
6368 fprintf(f
, "Subject: Mail delivery failed%s\n\n",
6369 to_sender
? ": returning message to sender" : "");
6372 emf_text
= next_emf(emf
, US
"intro");
6373 if (emf_text
!= NULL
) fprintf(f
, "%s", CS emf_text
); else
6376 /* This message has been reworded several times. It seems to be confusing to
6377 somebody, however it is worded. I have retreated to the original, simple
6379 "This message was created automatically by mail delivery software.\n");
6380 if (bounce_message_text
!= NULL
) fprintf(f
, "%s", CS bounce_message_text
);
6384 "\nA message that you sent could not be delivered to one or more of its\n"
6385 "recipients. This is a permanent error. The following address(es) failed:\n");
6390 "\nA message sent by\n\n <%s>\n\n"
6391 "could not be delivered to one or more of its recipients. The following\n"
6392 "address(es) failed:\n", sender_address
);
6397 /* Process the addresses, leaving them on the msgchain if they have a
6398 file name for a return message. (There has already been a check in
6399 post_process_one() for the existence of data in the message file.) A TRUE
6400 return from print_address_information() means that the address is not
6404 for (addr
= msgchain
; addr
!= NULL
; addr
= *paddr
)
6406 if (print_address_information(addr
, f
, US
" ", US
"\n ", US
""))
6407 print_address_error(addr
, f
, US
"");
6409 /* End the final line for the address */
6413 /* Leave on msgchain if there's a return file. */
6415 if (addr
->return_file
>= 0)
6417 paddr
= &(addr
->next
);
6421 /* Else save so that we can tick off the recipient when the
6426 *paddr
= addr
->next
;
6427 addr
->next
= handled_addr
;
6428 handled_addr
= addr
;
6434 /* Get the next text, whether we need it or not, so as to be
6435 positioned for the one after. */
6437 emf_text
= next_emf(emf
, US
"generated text");
6439 /* If there were any file messages passed by the local transports,
6440 include them in the message. Then put the address on the handled chain.
6441 In the case of a batch of addresses that were all sent to the same
6442 transport, the return_file field in all of them will contain the same
6443 fd, and the return_filename field in the *last* one will be set (to the
6444 name of the file). */
6446 if (msgchain
!= NULL
)
6448 address_item
*nextaddr
;
6450 if (emf_text
!= NULL
) fprintf(f
, "%s", CS emf_text
); else
6452 "The following text was generated during the delivery "
6453 "attempt%s:\n", (filecount
> 1)? "s" : "");
6455 for (addr
= msgchain
; addr
!= NULL
; addr
= nextaddr
)
6458 address_item
*topaddr
= addr
;
6460 /* List all the addresses that relate to this file */
6463 while(addr
!= NULL
) /* Insurance */
6465 print_address_information(addr
, f
, US
"------ ", US
"\n ",
6467 if (addr
->return_filename
!= NULL
) break;
6472 /* Now copy the file */
6474 fm
= Ufopen(addr
->return_filename
, "rb");
6477 fprintf(f
, " +++ Exim error... failed to open text file: %s\n",
6481 while ((ch
= fgetc(fm
)) != EOF
) fputc(ch
, f
);
6484 Uunlink(addr
->return_filename
);
6486 /* Can now add to handled chain, first fishing off the next
6487 address on the msgchain. */
6489 nextaddr
= addr
->next
;
6490 addr
->next
= handled_addr
;
6491 handled_addr
= topaddr
;
6496 /* Now copy the message, trying to give an intelligible comment if
6497 it is too long for it all to be copied. The limit isn't strictly
6498 applied because of the buffering. There is, however, an option
6499 to suppress copying altogether. */
6501 emf_text
= next_emf(emf
, US
"copy");
6503 if (bounce_return_message
)
6505 int topt
= topt_add_return_path
;
6506 if (!bounce_return_body
) topt
|= topt_no_body
;
6508 if (emf_text
!= NULL
) fprintf(f
, "%s", CS emf_text
); else
6510 if (bounce_return_body
) fprintf(f
,
6511 "------ This is a copy of the message, including all the headers. ------\n");
6513 "------ This is a copy of the message's headers. ------\n");
6516 /* While reading the "truncated" message, set return_size_limit to
6517 the actual max testing value, rounded. We need to read the message
6518 whether we are going to use it or not. */
6521 int temp
= bounce_return_size_limit
;
6522 bounce_return_size_limit
= (max
/1000)*1000;
6523 emf_text
= next_emf(emf
, US
"truncated");
6524 bounce_return_size_limit
= temp
;
6527 if (bounce_return_body
&& bounce_return_size_limit
> 0)
6529 struct stat statbuf
;
6530 if (fstat(deliver_datafile
, &statbuf
) == 0 && statbuf
.st_size
> max
)
6532 if (emf_text
!= NULL
) fprintf(f
, "%s", CS emf_text
); else
6535 "------ The body of the message is " OFF_T_FMT
" characters long; only the first\n"
6536 "------ %d or so are included here.\n", statbuf
.st_size
, max
);
6543 transport_filter_argv
= NULL
; /* Just in case */
6544 return_path
= sender_address
; /* In case not previously set */
6545 transport_write_message(NULL
, fileno(f
), topt
,
6546 bounce_return_size_limit
, NULL
, NULL
, NULL
, NULL
, NULL
, 0);
6549 /* Write final text and close the template file if one is open */
6553 emf_text
= next_emf(emf
, US
"final");
6554 if (emf_text
!= NULL
) fprintf(f
, "%s", CS emf_text
);
6558 /* Close the file, which should send an EOF to the child process
6559 that is receiving the message. Wait for it to finish. */
6562 rc
= child_close(pid
, 0); /* Waits for child to close, no timeout */
6564 /* In the test harness, let the child do it's thing first. */
6566 if (running_in_test_harness
) millisleep(500);
6568 /* If the process failed, there was some disaster in setting up the
6569 error message. Unless the message is very old, ensure that addr_defer
6570 is non-null, which will have the effect of leaving the message on the
6571 spool. The failed addresses will get tried again next time. However, we
6572 don't really want this to happen too often, so freeze the message unless
6573 there are some genuine deferred addresses to try. To do this we have
6574 to call spool_write_header() here, because with no genuine deferred
6575 addresses the normal code below doesn't get run. */
6580 if (now
- received_time
< retry_maximum_timeout
&& addr_defer
== NULL
)
6582 addr_defer
= (address_item
*)(+1);
6583 deliver_freeze
= TRUE
;
6584 deliver_frozen_at
= time(NULL
);
6585 /* Panic-dies on error */
6586 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
6589 deliver_msglog("Process failed (%d) when writing error message "
6590 "to %s%s", rc
, bounce_recipient
, s
);
6591 log_write(0, LOG_MAIN
, "Process failed (%d) when writing error message "
6592 "to %s%s", rc
, bounce_recipient
, s
);
6595 /* The message succeeded. Ensure that the recipients that failed are
6596 now marked finished with on the spool and their parents updated. */
6600 for (addr
= handled_addr
; addr
!= NULL
; addr
= addr
->next
)
6602 address_done(addr
, logtod
);
6603 child_done(addr
, logtod
);
6605 /* Panic-dies on error */
6606 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
6612 disable_logging
= FALSE
; /* In case left set */
6614 /* Come here from the mua_wrapper case if routing goes wrong */
6618 /* If there are now no deferred addresses, we are done. Preserve the
6619 message log if so configured, and we are using them. Otherwise, sling it.
6620 Then delete the message itself. */
6622 if (addr_defer
== NULL
)
6626 sprintf(CS spoolname
, "%s/msglog/%s/%s", spool_directory
, message_subdir
,
6628 if (preserve_message_logs
)
6631 sprintf(CS big_buffer
, "%s/msglog.OLD/%s", spool_directory
, id
);
6632 if ((rc
= Urename(spoolname
, big_buffer
)) < 0)
6634 (void)directory_make(spool_directory
, US
"msglog.OLD",
6635 MSGLOG_DIRECTORY_MODE
, TRUE
);
6636 rc
= Urename(spoolname
, big_buffer
);
6639 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to move %s to the "
6640 "msglog.OLD directory", spoolname
);
6644 if (Uunlink(spoolname
) < 0)
6645 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s",
6646 spoolname
, strerror(errno
));
6650 /* Remove the two message files. */
6652 sprintf(CS spoolname
, "%s/input/%s/%s-D", spool_directory
, message_subdir
, id
);
6653 if (Uunlink(spoolname
) < 0)
6654 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s",
6655 spoolname
, strerror(errno
));
6656 sprintf(CS spoolname
, "%s/input/%s/%s-H", spool_directory
, message_subdir
, id
);
6657 if (Uunlink(spoolname
) < 0)
6658 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s",
6659 spoolname
, strerror(errno
));
6661 /* Log the end of this message, with queue time if requested. */
6663 if ((log_extra_selector
& LX_queue_time_overall
) != 0)
6664 log_write(0, LOG_MAIN
, "Completed QT=%s",
6665 readconf_printtime(time(NULL
) - received_time
));
6667 log_write(0, LOG_MAIN
, "Completed");
6669 /* Unset deliver_freeze so that we won't try to move the spool files further down */
6670 deliver_freeze
= FALSE
;
6673 /* If there are deferred addresses, we are keeping this message because it is
6674 not yet completed. Lose any temporary files that were catching output from
6675 pipes for any of the deferred addresses, handle one-time aliases, and see if
6676 the message has been on the queue for so long that it is time to send a warning
6677 message to the sender, unless it is a mailer-daemon. If all deferred addresses
6678 have the same domain, we can set deliver_domain for the expansion of
6679 delay_warning_ condition - if any of them are pipes, files, or autoreplies, use
6680 the parent's domain.
6682 If all the deferred addresses have an error number that indicates "retry time
6683 not reached", skip sending the warning message, because it won't contain the
6684 reason for the delay. It will get sent at the next real delivery attempt.
6685 However, if at least one address has tried, we'd better include all of them in
6688 If we can't make a process to send the message, don't worry.
6690 For mailing list expansions we want to send the warning message to the
6691 mailing list manager. We can't do a perfect job here, as some addresses may
6692 have different errors addresses, but if we take the errors address from
6693 each deferred address it will probably be right in most cases.
6695 If addr_defer == +1, it means there was a problem sending an error message
6696 for failed addresses, and there were no "real" deferred addresses. The value
6697 was set just to keep the message on the spool, so there is nothing to do here.
6700 else if (addr_defer
!= (address_item
*)(+1))
6703 uschar
*recipients
= US
"";
6704 BOOL delivery_attempted
= FALSE
;
6706 deliver_domain
= testflag(addr_defer
, af_pfr
)?
6707 addr_defer
->parent
->domain
: addr_defer
->domain
;
6709 for (addr
= addr_defer
; addr
!= NULL
; addr
= addr
->next
)
6711 address_item
*otaddr
;
6713 if (addr
->basic_errno
> ERRNO_RETRY_BASE
) delivery_attempted
= TRUE
;
6715 if (deliver_domain
!= NULL
)
6717 uschar
*d
= (testflag(addr
, af_pfr
))? addr
->parent
->domain
: addr
->domain
;
6719 /* The domain may be unset for an address that has never been routed
6720 because the system filter froze the message. */
6722 if (d
== NULL
|| Ustrcmp(d
, deliver_domain
) != 0) deliver_domain
= NULL
;
6725 if (addr
->return_filename
!= NULL
) Uunlink(addr
->return_filename
);
6727 /* Handle the case of one-time aliases. If any address in the ancestry
6728 of this one is flagged, ensure it is in the recipients list, suitably
6729 flagged, and that its parent is marked delivered. */
6731 for (otaddr
= addr
; otaddr
!= NULL
; otaddr
= otaddr
->parent
)
6732 if (otaddr
->onetime_parent
!= NULL
) break;
6737 int t
= recipients_count
;
6739 for (i
= 0; i
< recipients_count
; i
++)
6741 uschar
*r
= recipients_list
[i
].address
;
6742 if (Ustrcmp(otaddr
->onetime_parent
, r
) == 0) t
= i
;
6743 if (Ustrcmp(otaddr
->address
, r
) == 0) break;
6746 /* Didn't find the address already in the list, and did find the
6747 ultimate parent's address in the list. After adding the recipient,
6748 update the errors address in the recipients list. */
6750 if (i
>= recipients_count
&& t
< recipients_count
)
6752 DEBUG(D_deliver
) debug_printf("one_time: adding %s in place of %s\n",
6753 otaddr
->address
, otaddr
->parent
->address
);
6754 receive_add_recipient(otaddr
->address
, t
);
6755 recipients_list
[recipients_count
-1].errors_to
= otaddr
->p
.errors_address
;
6756 tree_add_nonrecipient(otaddr
->parent
->address
);
6757 update_spool
= TRUE
;
6761 /* Except for error messages, ensure that either the errors address for
6762 this deferred address or, if there is none, the sender address, is on the
6763 list of recipients for a warning message. */
6765 if (sender_address
[0] != 0)
6767 if (addr
->p
.errors_address
== NULL
)
6769 if (Ustrstr(recipients
, sender_address
) == NULL
)
6770 recipients
= string_sprintf("%s%s%s", recipients
,
6771 (recipients
[0] == 0)? "" : ",", sender_address
);
6775 if (Ustrstr(recipients
, addr
->p
.errors_address
) == NULL
)
6776 recipients
= string_sprintf("%s%s%s", recipients
,
6777 (recipients
[0] == 0)? "" : ",", addr
->p
.errors_address
);
6782 /* Send a warning message if the conditions are right. If the condition check
6783 fails because of a lookup defer, there is nothing we can do. The warning
6784 is not sent. Another attempt will be made at the next delivery attempt (if
6787 if (!queue_2stage
&& delivery_attempted
&&
6788 delay_warning
[1] > 0 && sender_address
[0] != 0 &&
6789 (delay_warning_condition
== NULL
||
6790 expand_check_condition(delay_warning_condition
,
6791 US
"delay_warning", US
"option")))
6795 int queue_time
= time(NULL
) - received_time
;
6797 /* When running in the test harness, there's an option that allows us to
6798 fudge this time so as to get repeatability of the tests. Take the first
6799 time off the list. In queue runs, the list pointer gets updated in the
6802 if (running_in_test_harness
&& fudged_queue_times
[0] != 0)
6804 int qt
= readconf_readtime(fudged_queue_times
, '/', FALSE
);
6807 DEBUG(D_deliver
) debug_printf("fudged queue_times = %s\n",
6808 fudged_queue_times
);
6813 /* See how many warnings we should have sent by now */
6815 for (count
= 0; count
< delay_warning
[1]; count
++)
6816 if (queue_time
< delay_warning
[count
+2]) break;
6818 show_time
= delay_warning
[count
+1];
6820 if (count
>= delay_warning
[1])
6823 int last_gap
= show_time
;
6824 if (count
> 1) last_gap
-= delay_warning
[count
];
6825 extra
= (queue_time
- delay_warning
[count
+1])/last_gap
;
6826 show_time
+= last_gap
* extra
;
6832 debug_printf("time on queue = %s\n", readconf_printtime(queue_time
));
6833 debug_printf("warning counts: required %d done %d\n", count
,
6837 /* We have computed the number of warnings there should have been by now.
6838 If there haven't been enough, send one, and up the count to what it should
6841 if (warning_count
< count
)
6845 pid_t pid
= child_open_exim(&fd
);
6851 FILE *f
= fdopen(fd
, "wb");
6853 if (warn_message_file
!= NULL
)
6855 wmf
= Ufopen(warn_message_file
, "rb");
6857 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to open %s for warning "
6858 "message texts: %s", warn_message_file
, strerror(errno
));
6861 warnmsg_recipients
= recipients
;
6862 warnmsg_delay
= (queue_time
< 120*60)?
6863 string_sprintf("%d minutes", show_time
/60):
6864 string_sprintf("%d hours", show_time
/3600);
6866 if (errors_reply_to
!= NULL
)
6867 fprintf(f
, "Reply-To: %s\n", errors_reply_to
);
6868 fprintf(f
, "Auto-Submitted: auto-replied\n");
6870 fprintf(f
, "To: %s\n", recipients
);
6872 wmf_text
= next_emf(wmf
, US
"header");
6873 if (wmf_text
!= NULL
)
6874 fprintf(f
, "%s\n", wmf_text
);
6876 fprintf(f
, "Subject: Warning: message %s delayed %s\n\n",
6877 message_id
, warnmsg_delay
);
6879 wmf_text
= next_emf(wmf
, US
"intro");
6880 if (wmf_text
!= NULL
) fprintf(f
, "%s", CS wmf_text
); else
6883 "This message was created automatically by mail delivery software.\n");
6885 if (Ustrcmp(recipients
, sender_address
) == 0)
6887 "A message that you sent has not yet been delivered to one or more of its\n"
6888 "recipients after more than ");
6891 "A message sent by\n\n <%s>\n\n"
6892 "has not yet been delivered to one or more of its recipients after more than \n",
6895 fprintf(f
, "%s on the queue on %s.\n\n", warnmsg_delay
,
6897 fprintf(f
, "The message identifier is: %s\n", message_id
);
6899 for (h
= header_list
; h
!= NULL
; h
= h
->next
)
6901 if (strncmpic(h
->text
, US
"Subject:", 8) == 0)
6902 fprintf(f
, "The subject of the message is: %s", h
->text
+ 9);
6903 else if (strncmpic(h
->text
, US
"Date:", 5) == 0)
6904 fprintf(f
, "The date of the message is: %s", h
->text
+ 6);
6908 fprintf(f
, "The address%s to which the message has not yet been "
6910 (addr_defer
->next
== NULL
)? "" : "es",
6911 (addr_defer
->next
== NULL
)? "is": "are");
6914 /* List the addresses, with error information if allowed */
6917 while (addr_defer
!= NULL
)
6919 address_item
*addr
= addr_defer
;
6920 addr_defer
= addr
->next
;
6921 if (print_address_information(addr
, f
, US
" ", US
"\n ", US
""))
6922 print_address_error(addr
, f
, US
"Delay reason: ");
6931 wmf_text
= next_emf(wmf
, US
"final");
6932 if (wmf_text
!= NULL
) fprintf(f
, "%s", CS wmf_text
);
6938 "No action is required on your part. Delivery attempts will continue for\n"
6939 "some time, and this warning may be repeated at intervals if the message\n"
6940 "remains undelivered. Eventually the mail delivery software will give up,\n"
6941 "and when that happens, the message will be returned to you.\n");
6944 /* Close and wait for child process to complete, without a timeout.
6945 If there's an error, don't update the count. */
6948 if (child_close(pid
, 0) == 0)
6950 warning_count
= count
;
6951 update_spool
= TRUE
; /* Ensure spool rewritten */
6957 /* Clear deliver_domain */
6959 deliver_domain
= NULL
;
6961 /* If this was a first delivery attempt, unset the first time flag, and
6962 ensure that the spool gets updated. */
6964 if (deliver_firsttime
)
6966 deliver_firsttime
= FALSE
;
6967 update_spool
= TRUE
;
6970 /* If delivery was frozen and freeze_tell is set, generate an appropriate
6971 message, unless the message is a local error message (to avoid loops). Then
6972 log the freezing. If the text in "frozen_info" came from a system filter,
6973 it has been escaped into printing characters so as not to mess up log lines.
6974 For the "tell" message, we turn \n back into newline. Also, insert a newline
6975 near the start instead of the ": " string. */
6979 if (freeze_tell
!= NULL
&& freeze_tell
[0] != 0 && !local_error_message
)
6981 uschar
*s
= string_copy(frozen_info
);
6982 uschar
*ss
= Ustrstr(s
, " by the system filter: ");
6993 if (*ss
== '\\' && ss
[1] == 'n')
7000 moan_tell_someone(freeze_tell
, addr_defer
, US
"Message frozen",
7001 "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id
,
7005 /* Log freezing just before we update the -H file, to minimize the chance
7006 of a race problem. */
7008 deliver_msglog("*** Frozen%s\n", frozen_info
);
7009 log_write(0, LOG_MAIN
, "Frozen%s", frozen_info
);
7012 /* If there have been any updates to the non-recipients list, or other things
7013 that get written to the spool, we must now update the spool header file so
7014 that it has the right information for the next delivery attempt. If there
7015 was more than one address being delivered, the header_change update is done
7016 earlier, in case one succeeds and then something crashes. */
7019 debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n",
7020 update_spool
, header_rewritten
);
7022 if (update_spool
|| header_rewritten
)
7023 /* Panic-dies on error */
7024 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
7027 /* Finished with the message log. If the message is complete, it will have
7028 been unlinked or renamed above. */
7030 if (message_logs
) (void)fclose(message_log
);
7032 /* Now we can close and remove the journal file. Its only purpose is to record
7033 successfully completed deliveries asap so that this information doesn't get
7034 lost if Exim (or the machine) crashes. Forgetting about a failed delivery is
7035 not serious, as trying it again is not harmful. The journal might not be open
7036 if all addresses were deferred at routing or directing. Nevertheless, we must
7037 remove it if it exists (may have been lying around from a crash during the
7038 previous delivery attempt). We don't remove the journal if a delivery
7039 subprocess failed to pass back delivery information; this is controlled by
7040 the remove_journal flag. When the journal is left, we also don't move the
7041 message off the main spool if frozen and the option is set. It should get moved
7042 at the next attempt, after the journal has been inspected. */
7044 if (journal_fd
>= 0) (void)close(journal_fd
);
7048 sprintf(CS spoolname
, "%s/input/%s/%s-J", spool_directory
, message_subdir
, id
);
7049 if (Uunlink(spoolname
) < 0 && errno
!= ENOENT
)
7050 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s", spoolname
,
7053 /* Move the message off the spool if reqested */
7055 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
7056 if (deliver_freeze
&& move_frozen_messages
)
7057 (void)spool_move_message(id
, message_subdir
, US
"", US
"F");
7061 /* Closing the data file frees the lock; if the file has been unlinked it
7062 will go away. Otherwise the message becomes available for another process
7065 (void)close(deliver_datafile
);
7066 deliver_datafile
= -1;
7067 DEBUG(D_deliver
) debug_printf("end delivery of %s\n", id
);
7069 /* It is unlikely that there will be any cached resources, since they are
7070 released after routing, and in the delivery subprocesses. However, it's
7071 possible for an expansion for something afterwards (for example,
7072 expand_check_condition) to do a lookup. We must therefore be sure everything is
7076 acl_where
= ACL_WHERE_UNKNOWN
;
7080 /* End of deliver.c */