1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* The main code for delivering a message. */
12 #include "transports/smtp.h"
17 /* Data block for keeping track of subprocesses for parallel remote
20 typedef struct pardata
{
21 address_item
*addrlist
; /* chain of addresses */
22 address_item
*addr
; /* next address data expected for */
23 pid_t pid
; /* subprocess pid */
24 int fd
; /* pipe fd for getting result from subprocess */
25 int transport_count
; /* returned transport count value */
26 BOOL done
; /* no more data needed */
27 uschar
*msg
; /* error message */
28 uschar
*return_path
; /* return_path for these addresses */
31 /* Values for the process_recipients variable */
33 enum { RECIP_ACCEPT
, RECIP_IGNORE
, RECIP_DEFER
,
34 RECIP_FAIL
, RECIP_FAIL_FILTER
, RECIP_FAIL_TIMEOUT
,
37 /* Mutually recursive functions for marking addresses done. */
39 static void child_done(address_item
*, uschar
*);
40 static void address_done(address_item
*, uschar
*);
42 /* Table for turning base-62 numbers into binary */
44 static uschar tab62
[] =
45 {0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, /* 0-9 */
46 0,10,11,12,13,14,15,16,17,18,19,20, /* A-K */
47 21,22,23,24,25,26,27,28,29,30,31,32, /* L-W */
48 33,34,35, 0, 0, 0, 0, 0, /* X-Z */
49 0,36,37,38,39,40,41,42,43,44,45,46, /* a-k */
50 47,48,49,50,51,52,53,54,55,56,57,58, /* l-w */
54 /*************************************************
55 * Local static variables *
56 *************************************************/
58 /* addr_duplicate is global because it needs to be seen from the Envelope-To
61 static address_item
*addr_defer
= NULL
;
62 static address_item
*addr_failed
= NULL
;
63 static address_item
*addr_fallback
= NULL
;
64 static address_item
*addr_local
= NULL
;
65 static address_item
*addr_new
= NULL
;
66 static address_item
*addr_remote
= NULL
;
67 static address_item
*addr_route
= NULL
;
68 static address_item
*addr_succeed
= NULL
;
69 static address_item
*addr_senddsn
= NULL
;
71 static FILE *message_log
= NULL
;
72 static BOOL update_spool
;
73 static BOOL remove_journal
;
74 static int parcount
= 0;
75 static pardata
*parlist
= NULL
;
76 static int return_count
;
77 static uschar
*frozen_info
= US
"";
78 static uschar
*used_return_path
= NULL
;
82 /*************************************************
83 * read as much as requested *
84 *************************************************/
86 /* The syscall read(2) doesn't always returns as much as we want. For
87 several reasons it might get less. (Not talking about signals, as syscalls
88 are restartable). When reading from a network or pipe connection the sender
89 might send in smaller chunks, with delays between these chunks. The read(2)
90 may return such a chunk.
92 The more the writer writes and the smaller the pipe between write and read is,
93 the more we get the chance of reading leass than requested. (See bug 2130)
95 This function read(2)s until we got all the data we *requested*.
97 Note: This function may block. Use it only if you're sure about the
98 amount of data you will get.
101 fd the file descriptor to read from
102 buffer pointer to a buffer of size len
103 len the requested(!) amount of bytes
105 Returns: the amount of bytes read
108 readn(int fd
, void * buffer
, size_t len
)
110 uschar
* next
= buffer
;
111 uschar
* end
= next
+ len
;
115 ssize_t got
= read(fd
, next
, end
- next
);
117 /* I'm not sure if there are signals that can interrupt us,
118 for now I assume the worst */
119 if (got
== -1 && errno
== EINTR
) continue;
120 if (got
<= 0) return next
- US buffer
;
128 /*************************************************
129 * Make a new address item *
130 *************************************************/
132 /* This function gets the store and initializes with default values. The
133 transport_return value defaults to DEFER, so that any unexpected failure to
134 deliver does not wipe out the message. The default unique string is set to a
135 copy of the address, so that its domain can be lowercased.
138 address the RFC822 address string
139 copy force a copy of the address
141 Returns: a pointer to an initialized address_item
145 deliver_make_addr(uschar
*address
, BOOL copy
)
147 address_item
*addr
= store_get(sizeof(address_item
), FALSE
);
148 *addr
= address_defaults
;
149 if (copy
) address
= string_copy(address
);
150 addr
->address
= address
;
151 addr
->unique
= string_copy(address
);
158 /*************************************************
159 * Set expansion values for an address *
160 *************************************************/
162 /* Certain expansion variables are valid only when handling an address or
163 address list. This function sets them up or clears the values, according to its
167 addr the address in question, or NULL to clear values
172 deliver_set_expansions(address_item
*addr
)
176 const uschar
***p
= address_expansions
;
177 while (*p
) **p
++ = NULL
;
181 /* Exactly what gets set depends on whether there is one or more addresses, and
182 what they contain. These first ones are always set, taking their values from
183 the first address. */
185 if (!addr
->host_list
)
187 deliver_host
= deliver_host_address
= US
"";
188 deliver_host_port
= 0;
192 deliver_host
= addr
->host_list
->name
;
193 deliver_host_address
= addr
->host_list
->address
;
194 deliver_host_port
= addr
->host_list
->port
;
197 deliver_recipients
= addr
;
198 deliver_address_data
= addr
->prop
.address_data
;
199 deliver_domain_data
= addr
->prop
.domain_data
;
200 deliver_localpart_data
= addr
->prop
.localpart_data
;
201 router_var
= addr
->prop
.variables
;
203 /* These may be unset for multiple addresses */
205 deliver_domain
= addr
->domain
;
206 self_hostname
= addr
->self_hostname
;
208 #ifdef EXPERIMENTAL_BRIGHTMAIL
209 bmi_deliver
= 1; /* deliver by default */
210 bmi_alt_location
= NULL
;
211 bmi_base64_verdict
= NULL
;
212 bmi_base64_tracker_verdict
= NULL
;
215 /* If there's only one address we can set everything. */
219 address_item
*addr_orig
;
221 deliver_localpart
= addr
->local_part
;
222 deliver_localpart_prefix
= addr
->prefix
;
223 deliver_localpart_suffix
= addr
->suffix
;
225 for (addr_orig
= addr
; addr_orig
->parent
; addr_orig
= addr_orig
->parent
) ;
226 deliver_domain_orig
= addr_orig
->domain
;
228 /* Re-instate any prefix and suffix in the original local part. In all
229 normal cases, the address will have a router associated with it, and we can
230 choose the caseful or caseless version accordingly. However, when a system
231 filter sets up a pipe, file, or autoreply delivery, no router is involved.
232 In this case, though, there won't be any prefix or suffix to worry about. */
234 deliver_localpart_orig
= !addr_orig
->router
235 ? addr_orig
->local_part
236 : addr_orig
->router
->caseful_local_part
237 ? addr_orig
->cc_local_part
238 : addr_orig
->lc_local_part
;
240 /* If there's a parent, make its domain and local part available, and if
241 delivering to a pipe or file, or sending an autoreply, get the local
242 part from the parent. For pipes and files, put the pipe or file string
243 into address_pipe and address_file. */
247 deliver_domain_parent
= addr
->parent
->domain
;
248 deliver_localpart_parent
= !addr
->parent
->router
249 ? addr
->parent
->local_part
250 : addr
->parent
->router
->caseful_local_part
251 ? addr
->parent
->cc_local_part
252 : addr
->parent
->lc_local_part
;
254 /* File deliveries have their own flag because they need to be picked out
255 as special more often. */
257 if (testflag(addr
, af_pfr
))
259 if (testflag(addr
, af_file
)) address_file
= addr
->local_part
;
260 else if (deliver_localpart
[0] == '|') address_pipe
= addr
->local_part
;
261 deliver_localpart
= addr
->parent
->local_part
;
262 deliver_localpart_prefix
= addr
->parent
->prefix
;
263 deliver_localpart_suffix
= addr
->parent
->suffix
;
267 #ifdef EXPERIMENTAL_BRIGHTMAIL
268 /* Set expansion variables related to Brightmail AntiSpam */
269 bmi_base64_verdict
= bmi_get_base64_verdict(deliver_localpart_orig
, deliver_domain_orig
);
270 bmi_base64_tracker_verdict
= bmi_get_base64_tracker_verdict(bmi_base64_verdict
);
271 /* get message delivery status (0 - don't deliver | 1 - deliver) */
272 bmi_deliver
= bmi_get_delivery_status(bmi_base64_verdict
);
273 /* if message is to be delivered, get eventual alternate location */
274 if (bmi_deliver
== 1)
275 bmi_alt_location
= bmi_get_alt_location(bmi_base64_verdict
);
280 /* For multiple addresses, don't set local part, and leave the domain and
281 self_hostname set only if it is the same for all of them. It is possible to
282 have multiple pipe and file addresses, but only when all addresses have routed
283 to the same pipe or file. */
287 if (testflag(addr
, af_pfr
))
289 if (testflag(addr
, af_file
)) address_file
= addr
->local_part
;
290 else if (addr
->local_part
[0] == '|') address_pipe
= addr
->local_part
;
292 for (address_item
* addr2
= addr
->next
; addr2
; addr2
= addr2
->next
)
294 if (deliver_domain
&& Ustrcmp(deliver_domain
, addr2
->domain
) != 0)
295 deliver_domain
= NULL
;
297 && ( !addr2
->self_hostname
298 || Ustrcmp(self_hostname
, addr2
->self_hostname
) != 0
300 self_hostname
= NULL
;
301 if (!deliver_domain
&& !self_hostname
) break;
309 /*************************************************
310 * Open a msglog file *
311 *************************************************/
313 /* This function is used both for normal message logs, and for files in the
314 msglog directory that are used to catch output from pipes. Try to create the
315 directory if it does not exist. From release 4.21, normal message logs should
316 be created when the message is received.
318 Called from deliver_message(), can be operating as root.
321 filename the file name
322 mode the mode required
323 error used for saying what failed
325 Returns: a file descriptor, or -1 (with errno set)
329 open_msglog_file(uschar
*filename
, int mode
, uschar
**error
)
331 if (Ustrstr(filename
, US
"/../"))
332 log_write(0, LOG_MAIN
|LOG_PANIC
,
333 "Attempt to open msglog file path with upward-traversal: '%s'\n", filename
);
335 for (int i
= 2; i
> 0; i
--)
337 int fd
= Uopen(filename
,
344 O_WRONLY
|O_APPEND
|O_CREAT
, mode
);
347 /* Set the close-on-exec flag and change the owner to the exim uid/gid (this
348 function is called as root). Double check the mode, because the group setting
349 doesn't always get set automatically. */
352 (void)fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
);
354 if (exim_fchown(fd
, exim_uid
, exim_gid
, filename
) < 0)
359 if (fchmod(fd
, mode
) < 0)
369 (void)directory_make(spool_directory
,
370 spool_sname(US
"msglog", message_subdir
),
371 MSGLOG_DIRECTORY_MODE
, TRUE
);
374 *error
= US
"create or open";
381 /*************************************************
382 * Write to msglog if required *
383 *************************************************/
385 /* Write to the message log, if configured. This function may also be called
389 format a string format
395 deliver_msglog(const char *format
, ...)
398 if (!message_logs
) return;
399 va_start(ap
, format
);
400 vfprintf(message_log
, format
, ap
);
408 /*************************************************
409 * Replicate status for batch *
410 *************************************************/
412 /* When a transport handles a batch of addresses, it may treat them
413 individually, or it may just put the status in the first one, and return FALSE,
414 requesting that the status be copied to all the others externally. This is the
415 replication function. As well as the status, it copies the transport pointer,
416 which may have changed if appendfile passed the addresses on to a different
419 Argument: pointer to the first address in a chain
424 replicate_status(address_item
*addr
)
426 for (address_item
* addr2
= addr
->next
; addr2
; addr2
= addr2
->next
)
428 addr2
->transport
= addr
->transport
;
429 addr2
->transport_return
= addr
->transport_return
;
430 addr2
->basic_errno
= addr
->basic_errno
;
431 addr2
->more_errno
= addr
->more_errno
;
432 addr2
->delivery_time
= addr
->delivery_time
;
433 addr2
->special_action
= addr
->special_action
;
434 addr2
->message
= addr
->message
;
435 addr2
->user_message
= addr
->user_message
;
441 /*************************************************
442 * Compare lists of hosts *
443 *************************************************/
445 /* This function is given two pointers to chains of host items, and it yields
446 TRUE if the lists refer to the same hosts in the same order, except that
448 (1) Multiple hosts with the same non-negative MX values are permitted to appear
449 in different orders. Round-robinning nameservers can cause this to happen.
451 (2) Multiple hosts with the same negative MX values less than MX_NONE are also
452 permitted to appear in different orders. This is caused by randomizing
455 This enables Exim to use a single SMTP transaction for sending to two entirely
456 different domains that happen to end up pointing at the same hosts.
459 one points to the first host list
460 two points to the second host list
462 Returns: TRUE if the lists refer to the same host set
466 same_hosts(host_item
*one
, host_item
*two
)
470 if (Ustrcmp(one
->name
, two
->name
) != 0)
473 host_item
*end_one
= one
;
474 host_item
*end_two
= two
;
476 /* Batch up only if there was no MX and the list was not randomized */
478 if (mx
== MX_NONE
) return FALSE
;
480 /* Find the ends of the shortest sequence of identical MX values */
482 while ( end_one
->next
&& end_one
->next
->mx
== mx
483 && end_two
->next
&& end_two
->next
->mx
== mx
)
485 end_one
= end_one
->next
;
486 end_two
= end_two
->next
;
489 /* If there aren't any duplicates, there's no match. */
491 if (end_one
== one
) return FALSE
;
493 /* For each host in the 'one' sequence, check that it appears in the 'two'
494 sequence, returning FALSE if not. */
499 for (hi
= two
; hi
!= end_two
->next
; hi
= hi
->next
)
500 if (Ustrcmp(one
->name
, hi
->name
) == 0) break;
501 if (hi
== end_two
->next
) return FALSE
;
502 if (one
== end_one
) break;
506 /* All the hosts in the 'one' sequence were found in the 'two' sequence.
507 Ensure both are pointing at the last host, and carry on as for equality. */
512 /* if the names matched but ports do not, mismatch */
513 else if (one
->port
!= two
->port
)
522 /* True if both are NULL */
529 /*************************************************
530 * Compare header lines *
531 *************************************************/
533 /* This function is given two pointers to chains of header items, and it yields
534 TRUE if they are the same header texts in the same order.
537 one points to the first header list
538 two points to the second header list
540 Returns: TRUE if the lists refer to the same header set
544 same_headers(header_line
*one
, header_line
*two
)
546 for (;; one
= one
->next
, two
= two
->next
)
548 if (one
== two
) return TRUE
; /* Includes the case where both NULL */
549 if (!one
|| !two
) return FALSE
;
550 if (Ustrcmp(one
->text
, two
->text
) != 0) return FALSE
;
556 /*************************************************
557 * Compare string settings *
558 *************************************************/
560 /* This function is given two pointers to strings, and it returns
561 TRUE if they are the same pointer, or if the two strings are the same.
564 one points to the first string
565 two points to the second string
567 Returns: TRUE or FALSE
571 same_strings(uschar
*one
, uschar
*two
)
573 if (one
== two
) return TRUE
; /* Includes the case where both NULL */
574 if (!one
|| !two
) return FALSE
;
575 return (Ustrcmp(one
, two
) == 0);
580 /*************************************************
581 * Compare uid/gid for addresses *
582 *************************************************/
584 /* This function is given a transport and two addresses. It yields TRUE if the
585 uid/gid/initgroups settings for the two addresses are going to be the same when
590 addr1 the first address
591 addr2 the second address
593 Returns: TRUE or FALSE
597 same_ugid(transport_instance
*tp
, address_item
*addr1
, address_item
*addr2
)
599 if ( !tp
->uid_set
&& !tp
->expand_uid
600 && !tp
->deliver_as_creator
601 && ( testflag(addr1
, af_uid_set
) != testflag(addr2
, af_gid_set
)
602 || ( testflag(addr1
, af_uid_set
)
603 && ( addr1
->uid
!= addr2
->uid
604 || testflag(addr1
, af_initgroups
) != testflag(addr2
, af_initgroups
)
608 if ( !tp
->gid_set
&& !tp
->expand_gid
609 && ( testflag(addr1
, af_gid_set
) != testflag(addr2
, af_gid_set
)
610 || ( testflag(addr1
, af_gid_set
)
611 && addr1
->gid
!= addr2
->gid
621 /*************************************************
622 * Record that an address is complete *
623 *************************************************/
625 /* This function records that an address is complete. This is straightforward
626 for most addresses, where the unique address is just the full address with the
627 domain lower cased. For homonyms (addresses that are the same as one of their
628 ancestors) their are complications. Their unique addresses have \x\ prepended
629 (where x = 0, 1, 2...), so that de-duplication works correctly for siblings and
632 Exim used to record the unique addresses of homonyms as "complete". This,
633 however, fails when the pattern of redirection varies over time (e.g. if taking
634 unseen copies at only some times of day) because the prepended numbers may vary
635 from one delivery run to the next. This problem is solved by never recording
636 prepended unique addresses as complete. Instead, when a homonymic address has
637 actually been delivered via a transport, we record its basic unique address
638 followed by the name of the transport. This is checked in subsequent delivery
639 runs whenever an address is routed to a transport.
641 If the completed address is a top-level one (has no parent, which means it
642 cannot be homonymic) we also add the original address to the non-recipients
643 tree, so that it gets recorded in the spool file and therefore appears as
644 "done" in any spool listings. The original address may differ from the unique
645 address in the case of the domain.
647 Finally, this function scans the list of duplicates, marks as done any that
648 match this address, and calls child_done() for their ancestors.
651 addr address item that has been completed
652 now current time as a string
658 address_done(address_item
*addr
, uschar
*now
)
660 update_spool
= TRUE
; /* Ensure spool gets updated */
662 /* Top-level address */
666 tree_add_nonrecipient(addr
->unique
);
667 tree_add_nonrecipient(addr
->address
);
670 /* Homonymous child address */
672 else if (testflag(addr
, af_homonym
))
675 tree_add_nonrecipient(
676 string_sprintf("%s/%s", addr
->unique
+ 3, addr
->transport
->name
));
679 /* Non-homonymous child address */
681 else tree_add_nonrecipient(addr
->unique
);
683 /* Check the list of duplicate addresses and ensure they are now marked
686 for (address_item
* dup
= addr_duplicate
; dup
; dup
= dup
->next
)
687 if (Ustrcmp(addr
->unique
, dup
->unique
) == 0)
689 tree_add_nonrecipient(dup
->unique
);
690 child_done(dup
, now
);
697 /*************************************************
698 * Decrease counts in parents and mark done *
699 *************************************************/
701 /* This function is called when an address is complete. If there is a parent
702 address, its count of children is decremented. If there are still other
703 children outstanding, the function exits. Otherwise, if the count has become
704 zero, address_done() is called to mark the parent and its duplicates complete.
705 Then loop for any earlier ancestors.
708 addr points to the completed address item
709 now the current time as a string, for writing to the message log
715 child_done(address_item
*addr
, uschar
*now
)
722 if (--addr
->child_count
> 0) return; /* Incomplete parent */
723 address_done(addr
, now
);
725 /* Log the completion of all descendents only when there is no ancestor with
726 the same original address. */
728 for (aa
= addr
->parent
; aa
; aa
= aa
->parent
)
729 if (Ustrcmp(aa
->address
, addr
->address
) == 0) break;
732 deliver_msglog("%s %s: children all complete\n", now
, addr
->address
);
733 DEBUG(D_deliver
) debug_printf("%s: children all complete\n", addr
->address
);
739 /*************************************************
740 * Delivery logging support functions *
741 *************************************************/
743 /* The LOGGING() checks in d_log_interface() are complicated for backwards
744 compatibility. When outgoing interface logging was originally added, it was
745 conditional on just incoming_interface (which is off by default). The
746 outgoing_interface option is on by default to preserve this behaviour, but
747 you can enable incoming_interface and disable outgoing_interface to get I=
748 fields on incoming lines only.
752 addr The address to be logged
754 Returns: New value for s
758 d_log_interface(gstring
* g
)
760 if (LOGGING(incoming_interface
) && LOGGING(outgoing_interface
)
761 && sending_ip_address
)
763 g
= string_fmt_append(g
, " I=[%s]", sending_ip_address
);
764 if (LOGGING(outgoing_port
))
765 g
= string_fmt_append(g
, ":%d", sending_port
);
773 d_hostlog(gstring
* g
, address_item
* addr
)
775 host_item
* h
= addr
->host_used
;
777 g
= string_append(g
, 2, US
" H=", h
->name
);
779 if (LOGGING(dnssec
) && h
->dnssec
== DS_YES
)
780 g
= string_catn(g
, US
" DS", 3);
782 g
= string_append(g
, 3, US
" [", h
->address
, US
"]");
784 if (LOGGING(outgoing_port
))
785 g
= string_fmt_append(g
, ":%d", h
->port
);
788 if (LOGGING(proxy
) && proxy_local_address
)
790 g
= string_append(g
, 3, US
" PRX=[", proxy_local_address
, US
"]");
791 if (LOGGING(outgoing_port
))
792 g
= string_fmt_append(g
, ":%d", proxy_local_port
);
796 g
= d_log_interface(g
);
798 if (testflag(addr
, af_tcp_fastopen
))
799 g
= string_catn(g
, US
" TFO*", testflag(addr
, af_tcp_fastopen_data
) ? 5 : 4);
810 d_tlslog(gstring
* g
, address_item
* addr
)
812 if (LOGGING(tls_cipher
) && addr
->cipher
)
814 g
= string_append(g
, 2, US
" X=", addr
->cipher
);
815 #ifdef EXPERIMENTAL_TLS_RESUME
816 if (LOGGING(tls_resumption
) && testflag(addr
, af_tls_resume
))
817 g
= string_catn(g
, US
"*", 1);
820 if (LOGGING(tls_certificate_verified
) && addr
->cipher
)
821 g
= string_append(g
, 2, US
" CV=",
822 testflag(addr
, af_cert_verified
)
825 testflag(addr
, af_dane_verified
)
831 if (LOGGING(tls_peerdn
) && addr
->peerdn
)
832 g
= string_append(g
, 3, US
" DN=\"", string_printing(addr
->peerdn
), US
"\"");
840 #ifndef DISABLE_EVENT
842 event_raise(uschar
* action
, const uschar
* event
, uschar
* ev_data
)
848 debug_printf("Event(%s): event_action=|%s| delivery_IP=%s\n",
850 action
, deliver_host_address
);
853 event_data
= ev_data
;
855 if (!(s
= expand_string(action
)) && *expand_string_message
)
856 log_write(0, LOG_MAIN
|LOG_PANIC
,
857 "failed to expand event_action %s in %s: %s\n",
858 event
, transport_name
? transport_name
: US
"main", expand_string_message
);
860 event_name
= event_data
= NULL
;
862 /* If the expansion returns anything but an empty string, flag for
863 the caller to modify his normal processing
868 debug_printf("Event(%s): event_action returned \"%s\"\n", event
, s
);
877 msg_event_raise(const uschar
* event
, const address_item
* addr
)
879 const uschar
* save_domain
= deliver_domain
;
880 uschar
* save_local
= deliver_localpart
;
881 const uschar
* save_host
= deliver_host
;
882 const uschar
* save_address
= deliver_host_address
;
883 const int save_port
= deliver_host_port
;
885 router_name
= addr
->router
? addr
->router
->name
: NULL
;
886 deliver_domain
= addr
->domain
;
887 deliver_localpart
= addr
->local_part
;
888 deliver_host
= addr
->host_used
? addr
->host_used
->name
: NULL
;
890 if (!addr
->transport
)
892 if (Ustrcmp(event
, "msg:fail:delivery") == 0)
894 /* An address failed with no transport involved. This happens when
895 a filter was used which triggered a fail command (in such a case
896 a transport isn't needed). Convert it to an internal fail event. */
898 (void) event_raise(event_action
, US
"msg:fail:internal", addr
->message
);
903 transport_name
= addr
->transport
->name
;
905 (void) event_raise(addr
->transport
->event_action
, event
,
907 || Ustrcmp(addr
->transport
->driver_name
, "smtp") == 0
908 || Ustrcmp(addr
->transport
->driver_name
, "lmtp") == 0
909 || Ustrcmp(addr
->transport
->driver_name
, "autoreply") == 0
910 ? addr
->message
: NULL
);
913 deliver_host_port
= save_port
;
914 deliver_host_address
= save_address
;
915 deliver_host
= save_host
;
916 deliver_localpart
= save_local
;
917 deliver_domain
= save_domain
;
918 router_name
= transport_name
= NULL
;
920 #endif /*DISABLE_EVENT*/
924 /******************************************************************************/
927 /*************************************************
928 * Generate local prt for logging *
929 *************************************************/
931 /* This function is a subroutine for use in string_log_address() below.
934 addr the address being logged
935 yield the current dynamic buffer pointer
937 Returns: the new value of the buffer pointer
941 string_get_localpart(address_item
* addr
, gstring
* yield
)
946 if (testflag(addr
, af_include_affixes
) && s
)
949 if (testflag(addr
, af_utf8_downcvt
))
950 s
= string_localpart_utf8_to_alabel(s
, NULL
);
952 yield
= string_cat(yield
, s
);
955 s
= addr
->local_part
;
957 if (testflag(addr
, af_utf8_downcvt
))
958 s
= string_localpart_utf8_to_alabel(s
, NULL
);
960 yield
= string_cat(yield
, s
);
963 if (testflag(addr
, af_include_affixes
) && s
)
966 if (testflag(addr
, af_utf8_downcvt
))
967 s
= string_localpart_utf8_to_alabel(s
, NULL
);
969 yield
= string_cat(yield
, s
);
976 /*************************************************
977 * Generate log address list *
978 *************************************************/
980 /* This function generates a list consisting of an address and its parents, for
981 use in logging lines. For saved onetime aliased addresses, the onetime parent
982 field is used. If the address was delivered by a transport with rcpt_include_
983 affixes set, the af_include_affixes bit will be set in the address. In that
984 case, we include the affixes here too.
987 g points to growing-string struct
988 addr bottom (ultimate) address
989 all_parents if TRUE, include all parents
990 success TRUE for successful delivery
992 Returns: a growable string in dynamic store
996 string_log_address(gstring
* g
,
997 address_item
*addr
, BOOL all_parents
, BOOL success
)
999 BOOL add_topaddr
= TRUE
;
1000 address_item
*topaddr
;
1002 /* Find the ultimate parent */
1004 for (topaddr
= addr
; topaddr
->parent
; topaddr
= topaddr
->parent
) ;
1006 /* We start with just the local part for pipe, file, and reply deliveries, and
1007 for successful local deliveries from routers that have the log_as_local flag
1008 set. File deliveries from filters can be specified as non-absolute paths in
1009 cases where the transport is going to complete the path. If there is an error
1010 before this happens (expansion failure) the local part will not be updated, and
1011 so won't necessarily look like a path. Add extra text for this case. */
1013 if ( testflag(addr
, af_pfr
)
1015 && addr
->router
&& addr
->router
->log_as_local
1016 && addr
->transport
&& addr
->transport
->info
->local
1019 if (testflag(addr
, af_file
) && addr
->local_part
[0] != '/')
1020 g
= string_catn(g
, CUS
"save ", 5);
1021 g
= string_get_localpart(addr
, g
);
1024 /* Other deliveries start with the full address. It we have split it into local
1025 part and domain, use those fields. Some early failures can happen before the
1026 splitting is done; in those cases use the original field. */
1031 int off
= g
->ptr
; /* start of the "full address" */
1033 if (addr
->local_part
)
1036 g
= string_get_localpart(addr
, g
);
1037 g
= string_catn(g
, US
"@", 1);
1040 if (testflag(addr
, af_utf8_downcvt
))
1041 s
= string_localpart_utf8_to_alabel(s
, NULL
);
1043 g
= string_cat(g
, s
);
1046 g
= string_cat(g
, addr
->address
);
1048 /* If the address we are going to print is the same as the top address,
1049 and all parents are not being included, don't add on the top address. First
1050 of all, do a caseless comparison; if this succeeds, do a caseful comparison
1051 on the local parts. */
1053 cmp
= g
->s
+ off
; /* only now, as rebuffer likely done */
1054 string_from_gstring(g
); /* ensure nul-terminated */
1055 if ( strcmpic(cmp
, topaddr
->address
) == 0
1056 && Ustrncmp(cmp
, topaddr
->address
, Ustrchr(cmp
, '@') - cmp
) == 0
1057 && !addr
->onetime_parent
1058 && (!all_parents
|| !addr
->parent
|| addr
->parent
== topaddr
)
1060 add_topaddr
= FALSE
;
1063 /* If all parents are requested, or this is a local pipe/file/reply, and
1064 there is at least one intermediate parent, show it in brackets, and continue
1065 with all of them if all are wanted. */
1067 if ( (all_parents
|| testflag(addr
, af_pfr
))
1069 && addr
->parent
!= topaddr
)
1072 for (address_item
* addr2
= addr
->parent
; addr2
!= topaddr
; addr2
= addr2
->parent
)
1074 g
= string_catn(g
, s
, 2);
1075 g
= string_cat (g
, addr2
->address
);
1076 if (!all_parents
) break;
1079 g
= string_catn(g
, US
")", 1);
1082 /* Add the top address if it is required */
1085 g
= string_append(g
, 3,
1087 addr
->onetime_parent
? addr
->onetime_parent
: topaddr
->address
,
1095 /******************************************************************************/
1099 /* If msg is NULL this is a delivery log and logchar is used. Otherwise
1100 this is a nonstandard call; no two-character delivery flag is written
1101 but sender-host and sender are prefixed and "msg" is inserted in the log line.
1104 flags passed to log_write()
1107 delivery_log(int flags
, address_item
* addr
, int logchar
, uschar
* msg
)
1109 gstring
* g
; /* Used for a temporary, expanding buffer, for building log lines */
1112 /* Log the delivery on the main log. We use an extensible string to build up
1113 the log line, and reset the store afterwards. Remote deliveries should always
1114 have a pointer to the host item that succeeded; local deliveries can have a
1115 pointer to a single host item in their host list, for use by the transport. */
1117 #ifndef DISABLE_EVENT
1118 /* presume no successful remote delivery */
1119 lookup_dnssec_authenticated
= NULL
;
1122 reset_point
= store_mark();
1123 g
= string_get_tainted(256, TRUE
); /* addrs will be tainted, so avoid copy */
1126 g
= string_append(g
, 2, host_and_ident(TRUE
), US
" ");
1129 g
->s
[0] = logchar
; g
->ptr
= 1;
1130 g
= string_catn(g
, US
"> ", 2);
1132 g
= string_log_address(g
, addr
, LOGGING(all_parents
), TRUE
);
1134 if (LOGGING(sender_on_delivery
) || msg
)
1135 g
= string_append(g
, 3, US
" F=<",
1137 testflag(addr
, af_utf8_downcvt
)
1138 ? string_address_utf8_to_alabel(sender_address
, NULL
)
1145 g
= string_append(g
, 2, US
" Q=", queue_name
);
1147 #ifdef EXPERIMENTAL_SRS
1148 if(addr
->prop
.srs_sender
)
1149 g
= string_append(g
, 3, US
" SRS=<", addr
->prop
.srs_sender
, US
">");
1152 /* You might think that the return path must always be set for a successful
1153 delivery; indeed, I did for some time, until this statement crashed. The case
1154 when it is not set is for a delivery to /dev/null which is optimised by not
1155 being run at all. */
1157 if (used_return_path
&& LOGGING(return_path_on_delivery
))
1158 g
= string_append(g
, 3, US
" P=<", used_return_path
, US
">");
1161 g
= string_append(g
, 2, US
" ", msg
);
1163 /* For a delivery from a system filter, there may not be a router */
1165 g
= string_append(g
, 2, US
" R=", addr
->router
->name
);
1167 g
= string_append(g
, 2, US
" T=", addr
->transport
->name
);
1169 if (LOGGING(delivery_size
))
1170 g
= string_fmt_append(g
, " S=%d", transport_count
);
1172 /* Local delivery */
1174 if (addr
->transport
->info
->local
)
1176 if (addr
->host_list
)
1177 g
= string_append(g
, 2, US
" H=", addr
->host_list
->name
);
1178 g
= d_log_interface(g
);
1179 if (addr
->shadow_message
)
1180 g
= string_cat(g
, addr
->shadow_message
);
1183 /* Remote delivery */
1187 if (addr
->host_used
)
1189 g
= d_hostlog(g
, addr
);
1190 if (continue_sequence
> 1)
1191 g
= string_catn(g
, US
"*", 1);
1193 #ifndef DISABLE_EVENT
1194 deliver_host_address
= addr
->host_used
->address
;
1195 deliver_host_port
= addr
->host_used
->port
;
1196 deliver_host
= addr
->host_used
->name
;
1198 /* DNS lookup status */
1199 lookup_dnssec_authenticated
= addr
->host_used
->dnssec
==DS_YES
? US
"yes"
1200 : addr
->host_used
->dnssec
==DS_NO
? US
"no"
1206 g
= d_tlslog(g
, addr
);
1209 if (addr
->authenticator
)
1211 g
= string_append(g
, 2, US
" A=", addr
->authenticator
);
1214 g
= string_append(g
, 2, US
":", addr
->auth_id
);
1215 if (LOGGING(smtp_mailauth
) && addr
->auth_sndr
)
1216 g
= string_append(g
, 2, US
":", addr
->auth_sndr
);
1220 if (LOGGING(pipelining
))
1222 if (testflag(addr
, af_pipelining
))
1223 g
= string_catn(g
, US
" L", 2);
1224 #ifndef DISABLE_PIPE_CONNECT
1225 if (testflag(addr
, af_early_pipe
))
1226 g
= string_catn(g
, US
"*", 1);
1230 #ifndef DISABLE_PRDR
1231 if (testflag(addr
, af_prdr_used
))
1232 g
= string_catn(g
, US
" PRDR", 5);
1235 if (testflag(addr
, af_chunking_used
))
1236 g
= string_catn(g
, US
" K", 2);
1239 /* confirmation message (SMTP (host_used) and LMTP (driver_name)) */
1241 if ( LOGGING(smtp_confirmation
)
1243 && (addr
->host_used
|| Ustrcmp(addr
->transport
->driver_name
, "lmtp") == 0)
1246 unsigned lim
= big_buffer_size
< 1024 ? big_buffer_size
: 1024;
1247 uschar
*p
= big_buffer
;
1248 uschar
*ss
= addr
->message
;
1250 for (int i
= 0; i
< lim
&& ss
[i
] != 0; i
++) /* limit logged amount */
1252 if (ss
[i
] == '\"' || ss
[i
] == '\\') *p
++ = '\\'; /* quote \ and " */
1257 g
= string_append(g
, 2, US
" C=", big_buffer
);
1260 /* Time on queue and actual time taken to deliver */
1262 if (LOGGING(queue_time
))
1263 g
= string_append(g
, 2, US
" QT=",
1264 string_timesince(&received_time
));
1266 if (LOGGING(deliver_time
))
1267 g
= string_append(g
, 2, US
" DT=", string_timediff(&addr
->delivery_time
));
1269 /* string_cat() always leaves room for the terminator. Release the
1270 store we used to build the line after writing it. */
1272 log_write(0, flags
, "%s", string_from_gstring(g
));
1274 #ifndef DISABLE_EVENT
1275 if (!msg
) msg_event_raise(US
"msg:delivery", addr
);
1278 store_reset(reset_point
);
1285 deferral_log(address_item
* addr
, uschar
* now
,
1286 int logflags
, uschar
* driver_name
, uschar
* driver_kind
)
1288 rmark reset_point
= store_mark();
1289 gstring
* g
= string_get(256);
1291 /* Build up the line that is used for both the message log and the main
1294 /* Create the address string for logging. Must not do this earlier, because
1295 an OK result may be changed to FAIL when a pipe returns text. */
1297 g
= string_log_address(g
, addr
, LOGGING(all_parents
), FALSE
);
1300 g
= string_append(g
, 2, US
" Q=", queue_name
);
1302 /* Either driver_name contains something and driver_kind contains
1303 " router" or " transport" (note the leading space), or driver_name is
1304 a null string and driver_kind contains "routing" without the leading
1305 space, if all routing has been deferred. When a domain has been held,
1306 so nothing has been done at all, both variables contain null strings. */
1310 if (driver_kind
[1] == 't' && addr
->router
)
1311 g
= string_append(g
, 2, US
" R=", addr
->router
->name
);
1312 g
= string_fmt_append(g
, " %c=%s", toupper(driver_kind
[1]), driver_name
);
1314 else if (driver_kind
)
1315 g
= string_append(g
, 2, US
" ", driver_kind
);
1317 g
= string_fmt_append(g
, " defer (%d)", addr
->basic_errno
);
1319 if (addr
->basic_errno
> 0)
1320 g
= string_append(g
, 2, US
": ",
1321 US
strerror(addr
->basic_errno
));
1323 if (addr
->host_used
)
1325 g
= string_append(g
, 5,
1326 US
" H=", addr
->host_used
->name
,
1327 US
" [", addr
->host_used
->address
, US
"]");
1328 if (LOGGING(outgoing_port
))
1330 int port
= addr
->host_used
->port
;
1331 g
= string_fmt_append(g
, ":%d", port
== PORT_NONE
? 25 : port
);
1335 if (LOGGING(deliver_time
))
1336 g
= string_append(g
, 2, US
" DT=", string_timediff(&addr
->delivery_time
));
1339 g
= string_append(g
, 2, US
": ", addr
->message
);
1341 (void) string_from_gstring(g
);
1343 /* Log the deferment in the message log, but don't clutter it
1344 up with retry-time defers after the first delivery attempt. */
1346 if (f
.deliver_firsttime
|| addr
->basic_errno
> ERRNO_RETRY_BASE
)
1347 deliver_msglog("%s %s\n", now
, g
->s
);
1349 /* Write the main log and reset the store.
1350 For errors of the type "retry time not reached" (also remotes skipped
1351 on queue run), logging is controlled by L_retry_defer. Note that this kind
1352 of error number is negative, and all the retry ones are less than any
1356 log_write(addr
->basic_errno
<= ERRNO_RETRY_BASE
? L_retry_defer
: 0, logflags
,
1359 store_reset(reset_point
);
1366 failure_log(address_item
* addr
, uschar
* driver_kind
, uschar
* now
)
1368 rmark reset_point
= store_mark();
1369 gstring
* g
= string_get(256);
1371 #ifndef DISABLE_EVENT
1372 /* Message failures for which we will send a DSN get their event raised
1373 later so avoid doing it here. */
1375 if ( !addr
->prop
.ignore_error
1376 && !(addr
->dsn_flags
& (rf_dsnflags
& ~rf_notify_failure
))
1378 msg_event_raise(US
"msg:fail:delivery", addr
);
1381 /* Build up the log line for the message and main logs */
1383 /* Create the address string for logging. Must not do this earlier, because
1384 an OK result may be changed to FAIL when a pipe returns text. */
1386 g
= string_log_address(g
, addr
, LOGGING(all_parents
), FALSE
);
1388 if (LOGGING(sender_on_delivery
))
1389 g
= string_append(g
, 3, US
" F=<", sender_address
, US
">");
1392 g
= string_append(g
, 2, US
" Q=", queue_name
);
1394 /* Return path may not be set if no delivery actually happened */
1396 if (used_return_path
&& LOGGING(return_path_on_delivery
))
1397 g
= string_append(g
, 3, US
" P=<", used_return_path
, US
">");
1400 g
= string_append(g
, 2, US
" R=", addr
->router
->name
);
1401 if (addr
->transport
)
1402 g
= string_append(g
, 2, US
" T=", addr
->transport
->name
);
1404 if (addr
->host_used
)
1405 g
= d_hostlog(g
, addr
);
1408 g
= d_tlslog(g
, addr
);
1411 if (addr
->basic_errno
> 0)
1412 g
= string_append(g
, 2, US
": ", US
strerror(addr
->basic_errno
));
1415 g
= string_append(g
, 2, US
": ", addr
->message
);
1417 if (LOGGING(deliver_time
))
1418 g
= string_append(g
, 2, US
" DT=", string_timediff(&addr
->delivery_time
));
1420 (void) string_from_gstring(g
);
1422 /* Do the logging. For the message log, "routing failed" for those cases,
1423 just to make it clearer. */
1426 deliver_msglog("%s %s failed for %s\n", now
, driver_kind
, g
->s
);
1428 deliver_msglog("%s %s\n", now
, g
->s
);
1430 log_write(0, LOG_MAIN
, "** %s", g
->s
);
1432 store_reset(reset_point
);
1438 /*************************************************
1439 * Actions at the end of handling an address *
1440 *************************************************/
1442 /* This is a function for processing a single address when all that can be done
1443 with it has been done.
1446 addr points to the address block
1447 result the result of the delivery attempt
1448 logflags flags for log_write() (LOG_MAIN and/or LOG_PANIC)
1449 driver_type indicates which type of driver (transport, or router) was last
1450 to process the address
1451 logchar '=' or '-' for use when logging deliveries with => or ->
1457 post_process_one(address_item
*addr
, int result
, int logflags
, int driver_type
,
1460 uschar
*now
= tod_stamp(tod_log
);
1461 uschar
*driver_kind
= NULL
;
1462 uschar
*driver_name
= NULL
;
1464 DEBUG(D_deliver
) debug_printf("post-process %s (%d)\n", addr
->address
, result
);
1466 /* Set up driver kind and name for logging. Disable logging if the router or
1467 transport has disabled it. */
1469 if (driver_type
== EXIM_DTYPE_TRANSPORT
)
1471 if (addr
->transport
)
1473 driver_name
= addr
->transport
->name
;
1474 driver_kind
= US
" transport";
1475 f
.disable_logging
= addr
->transport
->disable_logging
;
1477 else driver_kind
= US
"transporting";
1479 else if (driver_type
== EXIM_DTYPE_ROUTER
)
1483 driver_name
= addr
->router
->name
;
1484 driver_kind
= US
" router";
1485 f
.disable_logging
= addr
->router
->disable_logging
;
1487 else driver_kind
= US
"routing";
1490 /* If there's an error message set, ensure that it contains only printing
1491 characters - it should, but occasionally things slip in and this at least
1492 stops the log format from getting wrecked. We also scan the message for an LDAP
1493 expansion item that has a password setting, and flatten the password. This is a
1494 fudge, but I don't know a cleaner way of doing this. (If the item is badly
1495 malformed, it won't ever have gone near LDAP.) */
1499 const uschar
* s
= string_printing(addr
->message
);
1501 /* deconst cast ok as string_printing known to have alloc'n'copied */
1502 addr
->message
= expand_hide_passwords(US s
);
1505 /* If we used a transport that has one of the "return_output" options set, and
1506 if it did in fact generate some output, then for return_output we treat the
1507 message as failed if it was not already set that way, so that the output gets
1508 returned to the sender, provided there is a sender to send it to. For
1509 return_fail_output, do this only if the delivery failed. Otherwise we just
1510 unlink the file, and remove the name so that if the delivery failed, we don't
1511 try to send back an empty or unwanted file. The log_output options operate only
1512 on a non-empty file.
1514 In any case, we close the message file, because we cannot afford to leave a
1515 file-descriptor for one address while processing (maybe very many) others. */
1517 if (addr
->return_file
>= 0 && addr
->return_filename
)
1519 BOOL return_output
= FALSE
;
1520 struct stat statbuf
;
1521 (void)EXIMfsync(addr
->return_file
);
1523 /* If there is no output, do nothing. */
1525 if (fstat(addr
->return_file
, &statbuf
) == 0 && statbuf
.st_size
> 0)
1527 transport_instance
*tb
= addr
->transport
;
1529 /* Handle logging options */
1532 || result
== FAIL
&& tb
->log_fail_output
1533 || result
== DEFER
&& tb
->log_defer_output
1537 FILE *f
= Ufopen(addr
->return_filename
, "rb");
1539 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to open %s to log output "
1540 "from %s transport: %s", addr
->return_filename
, tb
->name
,
1543 if ((s
= US
Ufgets(big_buffer
, big_buffer_size
, f
)))
1545 uschar
*p
= big_buffer
+ Ustrlen(big_buffer
);
1547 while (p
> big_buffer
&& isspace(p
[-1])) p
--;
1549 sp
= string_printing(big_buffer
);
1550 log_write(0, LOG_MAIN
, "<%s>: %s transport output: %s",
1551 addr
->address
, tb
->name
, sp
);
1556 /* Handle returning options, but only if there is an address to return
1559 if (sender_address
[0] != 0 || addr
->prop
.errors_address
)
1560 if (tb
->return_output
)
1562 addr
->transport_return
= result
= FAIL
;
1563 if (addr
->basic_errno
== 0 && !addr
->message
)
1564 addr
->message
= US
"return message generated";
1565 return_output
= TRUE
;
1568 if (tb
->return_fail_output
&& result
== FAIL
) return_output
= TRUE
;
1571 /* Get rid of the file unless it might be returned, but close it in
1576 Uunlink(addr
->return_filename
);
1577 addr
->return_filename
= NULL
;
1578 addr
->return_file
= -1;
1581 (void)close(addr
->return_file
);
1584 /* The success case happens only after delivery by a transport. */
1588 addr
->next
= addr_succeed
;
1589 addr_succeed
= addr
;
1591 /* Call address_done() to ensure that we don't deliver to this address again,
1592 and write appropriate things to the message log. If it is a child address, we
1593 call child_done() to scan the ancestors and mark them complete if this is the
1594 last child to complete. */
1596 address_done(addr
, now
);
1597 DEBUG(D_deliver
) debug_printf("%s delivered\n", addr
->address
);
1600 deliver_msglog("%s %s: %s%s succeeded\n", now
, addr
->address
,
1601 driver_name
, driver_kind
);
1604 deliver_msglog("%s %s <%s>: %s%s succeeded\n", now
, addr
->address
,
1605 addr
->parent
->address
, driver_name
, driver_kind
);
1606 child_done(addr
, now
);
1609 /* Certificates for logging (via events) */
1611 tls_out
.ourcert
= addr
->ourcert
;
1612 addr
->ourcert
= NULL
;
1613 tls_out
.peercert
= addr
->peercert
;
1614 addr
->peercert
= NULL
;
1616 tls_out
.ver
= addr
->tlsver
;
1617 tls_out
.cipher
= addr
->cipher
;
1618 tls_out
.peerdn
= addr
->peerdn
;
1619 tls_out
.ocsp
= addr
->ocsp
;
1620 # ifdef SUPPORT_DANE
1621 tls_out
.dane_verified
= testflag(addr
, af_dane_verified
);
1625 delivery_log(LOG_MAIN
, addr
, logchar
, NULL
);
1628 tls_free_cert(&tls_out
.ourcert
);
1629 tls_free_cert(&tls_out
.peercert
);
1631 tls_out
.cipher
= NULL
;
1632 tls_out
.peerdn
= NULL
;
1633 tls_out
.ocsp
= OCSP_NOT_REQ
;
1634 # ifdef SUPPORT_DANE
1635 tls_out
.dane_verified
= FALSE
;
1641 /* Soft failure, or local delivery process failed; freezing may be
1644 else if (result
== DEFER
|| result
== PANIC
)
1646 if (result
== PANIC
) logflags
|= LOG_PANIC
;
1648 /* This puts them on the chain in reverse order. Do not change this, because
1649 the code for handling retries assumes that the one with the retry
1650 information is last. */
1652 addr
->next
= addr_defer
;
1655 /* The only currently implemented special action is to freeze the
1656 message. Logging of this is done later, just before the -H file is
1659 if (addr
->special_action
== SPECIAL_FREEZE
)
1661 f
.deliver_freeze
= TRUE
;
1662 deliver_frozen_at
= time(NULL
);
1663 update_spool
= TRUE
;
1666 /* If doing a 2-stage queue run, we skip writing to either the message
1667 log or the main log for SMTP defers. */
1669 if (!f
.queue_2stage
|| addr
->basic_errno
!= 0)
1670 deferral_log(addr
, now
, logflags
, driver_name
, driver_kind
);
1674 /* Hard failure. If there is an address to which an error message can be sent,
1675 put this address on the failed list. If not, put it on the deferred list and
1676 freeze the mail message for human attention. The latter action can also be
1677 explicitly requested by a router or transport. */
1681 /* If this is a delivery error, or a message for which no replies are
1682 wanted, and the message's age is greater than ignore_bounce_errors_after,
1683 force the af_ignore_error flag. This will cause the address to be discarded
1684 later (with a log entry). */
1686 if (!*sender_address
&& message_age
>= ignore_bounce_errors_after
)
1687 addr
->prop
.ignore_error
= TRUE
;
1689 /* Freeze the message if requested, or if this is a bounce message (or other
1690 message with null sender) and this address does not have its own errors
1691 address. However, don't freeze if errors are being ignored. The actual code
1692 to ignore occurs later, instead of sending a message. Logging of freezing
1693 occurs later, just before writing the -H file. */
1695 if ( !addr
->prop
.ignore_error
1696 && ( addr
->special_action
== SPECIAL_FREEZE
1697 || (sender_address
[0] == 0 && !addr
->prop
.errors_address
)
1700 frozen_info
= addr
->special_action
== SPECIAL_FREEZE
1702 : f
.sender_local
&& !f
.local_error_message
1703 ? US
" (message created with -f <>)"
1704 : US
" (delivery error message)";
1705 f
.deliver_freeze
= TRUE
;
1706 deliver_frozen_at
= time(NULL
);
1707 update_spool
= TRUE
;
1709 /* The address is put on the defer rather than the failed queue, because
1710 the message is being retained. */
1712 addr
->next
= addr_defer
;
1716 /* Don't put the address on the nonrecipients tree yet; wait until an
1717 error message has been successfully sent. */
1721 addr
->next
= addr_failed
;
1725 failure_log(addr
, driver_name
? NULL
: driver_kind
, now
);
1728 /* Ensure logging is turned on again in all cases */
1730 f
.disable_logging
= FALSE
;
1736 /*************************************************
1737 * Address-independent error *
1738 *************************************************/
1740 /* This function is called when there's an error that is not dependent on a
1741 particular address, such as an expansion string failure. It puts the error into
1742 all the addresses in a batch, logs the incident on the main and panic logs, and
1743 clears the expansions. It is mostly called from local_deliver(), but can be
1744 called for a remote delivery via findugid().
1747 logit TRUE if (MAIN+PANIC) logging required
1748 addr the first of the chain of addresses
1750 format format string for error message, or NULL if already set in addr
1751 ... arguments for the format
1757 common_error(BOOL logit
, address_item
*addr
, int code
, uschar
*format
, ...)
1759 addr
->basic_errno
= code
;
1766 va_start(ap
, format
);
1767 g
= string_vformat(NULL
, SVFMT_EXTEND
|SVFMT_REBUFFER
, CS format
, ap
);
1769 addr
->message
= string_from_gstring(g
);
1772 for (address_item
* addr2
= addr
->next
; addr2
; addr2
= addr2
->next
)
1774 addr2
->basic_errno
= code
;
1775 addr2
->message
= addr
->message
;
1778 if (logit
) log_write(0, LOG_MAIN
|LOG_PANIC
, "%s", addr
->message
);
1779 deliver_set_expansions(NULL
);
1785 /*************************************************
1786 * Check a "never users" list *
1787 *************************************************/
1789 /* This function is called to check whether a uid is on one of the two "never
1793 uid the uid to be checked
1794 nusers the list to be scanned; the first item in the list is the count
1796 Returns: TRUE if the uid is on the list
1800 check_never_users(uid_t uid
, uid_t
*nusers
)
1802 if (!nusers
) return FALSE
;
1803 for (int i
= 1; i
<= (int)(nusers
[0]); i
++) if (nusers
[i
] == uid
) return TRUE
;
1809 /*************************************************
1810 * Find uid and gid for a transport *
1811 *************************************************/
1813 /* This function is called for both local and remote deliveries, to find the
1814 uid/gid under which to run the delivery. The values are taken preferentially
1815 from the transport (either explicit or deliver_as_creator), then from the
1816 address (i.e. the router), and if nothing is set, the exim uid/gid are used. If
1817 the resulting uid is on the "never_users" or the "fixed_never_users" list, a
1818 panic error is logged, and the function fails (which normally leads to delivery
1822 addr the address (possibly a chain)
1824 uidp pointer to uid field
1825 gidp pointer to gid field
1826 igfp pointer to the use_initgroups field
1828 Returns: FALSE if failed - error has been set in address(es)
1832 findugid(address_item
*addr
, transport_instance
*tp
, uid_t
*uidp
, gid_t
*gidp
,
1836 BOOL gid_set
= FALSE
;
1838 /* Default initgroups flag comes from the transport */
1840 *igfp
= tp
->initgroups
;
1842 /* First see if there's a gid on the transport, either fixed or expandable.
1843 The expanding function always logs failure itself. */
1850 else if (tp
->expand_gid
)
1852 if (!route_find_expanded_group(tp
->expand_gid
, tp
->name
, US
"transport", gidp
,
1855 common_error(FALSE
, addr
, ERRNO_GIDFAIL
, NULL
);
1861 /* If the transport did not set a group, see if the router did. */
1863 if (!gid_set
&& testflag(addr
, af_gid_set
))
1869 /* Pick up a uid from the transport if one is set. */
1871 if (tp
->uid_set
) *uidp
= tp
->uid
;
1873 /* Otherwise, try for an expandable uid field. If it ends up as a numeric id,
1874 it does not provide a passwd value from which a gid can be taken. */
1876 else if (tp
->expand_uid
)
1879 if (!route_find_expanded_user(tp
->expand_uid
, tp
->name
, US
"transport", &pw
,
1880 uidp
, &(addr
->message
)))
1882 common_error(FALSE
, addr
, ERRNO_UIDFAIL
, NULL
);
1892 /* If the transport doesn't set the uid, test the deliver_as_creator flag. */
1894 else if (tp
->deliver_as_creator
)
1896 *uidp
= originator_uid
;
1899 *gidp
= originator_gid
;
1904 /* Otherwise see if the address specifies the uid and if so, take it and its
1907 else if (testflag(addr
, af_uid_set
))
1910 *igfp
= testflag(addr
, af_initgroups
);
1913 /* Nothing has specified the uid - default to the Exim user, and group if the
1926 /* If no gid is set, it is a disaster. We default to the Exim gid only if
1927 defaulting to the Exim uid. In other words, if the configuration has specified
1928 a uid, it must also provide a gid. */
1932 common_error(TRUE
, addr
, ERRNO_GIDFAIL
, US
"User set without group for "
1933 "%s transport", tp
->name
);
1937 /* Check that the uid is not on the lists of banned uids that may not be used
1938 for delivery processes. */
1940 nuname
= check_never_users(*uidp
, never_users
)
1942 : check_never_users(*uidp
, fixed_never_users
)
1943 ? US
"fixed_never_users"
1947 common_error(TRUE
, addr
, ERRNO_UIDFAIL
, US
"User %ld set for %s transport "
1948 "is on the %s list", (long int)(*uidp
), tp
->name
, nuname
);
1960 /*************************************************
1961 * Check the size of a message for a transport *
1962 *************************************************/
1964 /* Checks that the message isn't too big for the selected transport.
1965 This is called only when it is known that the limit is set.
1969 addr the (first) address being delivered
1972 DEFER expansion failed or did not yield an integer
1973 FAIL message too big
1977 check_message_size(transport_instance
*tp
, address_item
*addr
)
1982 deliver_set_expansions(addr
);
1983 size_limit
= expand_string_integer(tp
->message_size_limit
, TRUE
);
1984 deliver_set_expansions(NULL
);
1986 if (expand_string_message
)
1989 addr
->message
= size_limit
== -1
1990 ? string_sprintf("failed to expand message_size_limit "
1991 "in %s transport: %s", tp
->name
, expand_string_message
)
1992 : string_sprintf("invalid message_size_limit "
1993 "in %s transport: %s", tp
->name
, expand_string_message
);
1995 else if (size_limit
> 0 && message_size
> size_limit
)
1999 string_sprintf("message is too big (transport limit = %d)",
2008 /*************************************************
2009 * Transport-time check for a previous delivery *
2010 *************************************************/
2012 /* Check that this base address hasn't previously been delivered to its routed
2013 transport. If it has been delivered, mark it done. The check is necessary at
2014 delivery time in order to handle homonymic addresses correctly in cases where
2015 the pattern of redirection changes between delivery attempts (so the unique
2016 fields change). Non-homonymic previous delivery is detected earlier, at routing
2017 time (which saves unnecessary routing).
2020 addr the address item
2021 testing TRUE if testing wanted only, without side effects
2023 Returns: TRUE if previously delivered by the transport
2027 previously_transported(address_item
*addr
, BOOL testing
)
2029 uschar
* s
= string_sprintf("%s/%s",
2030 addr
->unique
+ (testflag(addr
, af_homonym
)? 3:0), addr
->transport
->name
);
2032 if (tree_search(tree_nonrecipients
, s
) != 0)
2034 DEBUG(D_deliver
|D_route
|D_transport
)
2035 debug_printf("%s was previously delivered (%s transport): discarded\n",
2036 addr
->address
, addr
->transport
->name
);
2037 if (!testing
) child_done(addr
, tod_stamp(tod_log
));
2046 /******************************************************
2047 * Check for a given header in a header string *
2048 ******************************************************/
2050 /* This function is used when generating quota warnings. The configuration may
2051 specify any header lines it likes in quota_warn_message. If certain of them are
2052 missing, defaults are inserted, so we need to be able to test for the presence
2056 hdr the required header name
2057 hstring the header string
2059 Returns: TRUE the header is in the string
2060 FALSE the header is not in the string
2064 contains_header(uschar
*hdr
, uschar
*hstring
)
2066 int len
= Ustrlen(hdr
);
2067 uschar
*p
= hstring
;
2070 if (strncmpic(p
, hdr
, len
) == 0)
2073 while (*p
== ' ' || *p
== '\t') p
++;
2074 if (*p
== ':') return TRUE
;
2076 while (*p
!= 0 && *p
!= '\n') p
++;
2077 if (*p
== '\n') p
++;
2085 /*************************************************
2086 * Perform a local delivery *
2087 *************************************************/
2089 /* Each local delivery is performed in a separate process which sets its
2090 uid and gid as specified. This is a safer way than simply changing and
2091 restoring using seteuid(); there is a body of opinion that seteuid() cannot be
2092 used safely. From release 4, Exim no longer makes any use of it. Besides, not
2093 all systems have seteuid().
2095 If the uid/gid are specified in the transport_instance, they are used; the
2096 transport initialization must ensure that either both or neither are set.
2097 Otherwise, the values associated with the address are used. If neither are set,
2098 it is a configuration error.
2100 The transport or the address may specify a home directory (transport over-
2101 rides), and if they do, this is set as $home. If neither have set a working
2102 directory, this value is used for that as well. Otherwise $home is left unset
2103 and the cwd is set to "/" - a directory that should be accessible to all users.
2105 Using a separate process makes it more complicated to get error information
2106 back. We use a pipe to pass the return code and also an error code and error
2107 text string back to the parent process.
2110 addr points to an address block for this delivery; for "normal" local
2111 deliveries this is the only address to be delivered, but for
2112 pseudo-remote deliveries (e.g. by batch SMTP to a file or pipe)
2113 a number of addresses can be handled simultaneously, and in this
2114 case addr will point to a chain of addresses with the same
2117 shadowing TRUE if running a shadow transport; this causes output from pipes
2124 deliver_local(address_item
*addr
, BOOL shadowing
)
2126 BOOL use_initgroups
;
2129 int status
, len
, rc
;
2132 uschar
*working_directory
;
2133 address_item
*addr2
;
2134 transport_instance
*tp
= addr
->transport
;
2136 /* Set up the return path from the errors or sender address. If the transport
2137 has its own return path setting, expand it and replace the existing value. */
2139 if(addr
->prop
.errors_address
)
2140 return_path
= addr
->prop
.errors_address
;
2141 #ifdef EXPERIMENTAL_SRS
2142 else if (addr
->prop
.srs_sender
)
2143 return_path
= addr
->prop
.srs_sender
;
2146 return_path
= sender_address
;
2148 if (tp
->return_path
)
2150 uschar
*new_return_path
= expand_string(tp
->return_path
);
2151 if (!new_return_path
)
2153 if (!f
.expand_string_forcedfail
)
2155 common_error(TRUE
, addr
, ERRNO_EXPANDFAIL
,
2156 US
"Failed to expand return path \"%s\" in %s transport: %s",
2157 tp
->return_path
, tp
->name
, expand_string_message
);
2161 else return_path
= new_return_path
;
2164 /* For local deliveries, one at a time, the value used for logging can just be
2165 set directly, once and for all. */
2167 used_return_path
= return_path
;
2169 /* Sort out the uid, gid, and initgroups flag. If an error occurs, the message
2170 gets put into the address(es), and the expansions are unset, so we can just
2173 if (!findugid(addr
, tp
, &uid
, &gid
, &use_initgroups
)) return;
2175 /* See if either the transport or the address specifies a home directory. A
2176 home directory set in the address may already be expanded; a flag is set to
2177 indicate that. In other cases we must expand it. */
2179 if ( (deliver_home
= tp
->home_dir
) /* Set in transport, or */
2180 || ( (deliver_home
= addr
->home_dir
) /* Set in address and */
2181 && !testflag(addr
, af_home_expanded
) /* not expanded */
2184 uschar
*rawhome
= deliver_home
;
2185 deliver_home
= NULL
; /* in case it contains $home */
2186 if (!(deliver_home
= expand_string(rawhome
)))
2188 common_error(TRUE
, addr
, ERRNO_EXPANDFAIL
, US
"home directory \"%s\" failed "
2189 "to expand for %s transport: %s", rawhome
, tp
->name
,
2190 expand_string_message
);
2193 if (*deliver_home
!= '/')
2195 common_error(TRUE
, addr
, ERRNO_NOTABSOLUTE
, US
"home directory path \"%s\" "
2196 "is not absolute for %s transport", deliver_home
, tp
->name
);
2201 /* See if either the transport or the address specifies a current directory,
2202 and if so, expand it. If nothing is set, use the home directory, unless it is
2203 also unset in which case use "/", which is assumed to be a directory to which
2204 all users have access. It is necessary to be in a visible directory for some
2205 operating systems when running pipes, as some commands (e.g. "rm" under Solaris
2206 2.5) require this. */
2208 working_directory
= tp
->current_dir
? tp
->current_dir
: addr
->current_dir
;
2209 if (working_directory
)
2211 uschar
*raw
= working_directory
;
2212 if (!(working_directory
= expand_string(raw
)))
2214 common_error(TRUE
, addr
, ERRNO_EXPANDFAIL
, US
"current directory \"%s\" "
2215 "failed to expand for %s transport: %s", raw
, tp
->name
,
2216 expand_string_message
);
2219 if (*working_directory
!= '/')
2221 common_error(TRUE
, addr
, ERRNO_NOTABSOLUTE
, US
"current directory path "
2222 "\"%s\" is not absolute for %s transport", working_directory
, tp
->name
);
2226 else working_directory
= deliver_home
? deliver_home
: US
"/";
2228 /* If one of the return_output flags is set on the transport, create and open a
2229 file in the message log directory for the transport to write its output onto.
2230 This is mainly used by pipe transports. The file needs to be unique to the
2231 address. This feature is not available for shadow transports. */
2234 && ( tp
->return_output
|| tp
->return_fail_output
2235 || tp
->log_output
|| tp
->log_fail_output
|| tp
->log_defer_output
2240 addr
->return_filename
=
2241 spool_fname(US
"msglog", message_subdir
, message_id
,
2242 string_sprintf("-%d-%d", getpid(), return_count
++));
2244 if ((addr
->return_file
= open_msglog_file(addr
->return_filename
, 0400, &error
)) < 0)
2246 common_error(TRUE
, addr
, errno
, US
"Unable to %s file for %s transport "
2247 "to return message: %s", error
, tp
->name
, strerror(errno
));
2252 /* Create the pipe for inter-process communication. */
2256 common_error(TRUE
, addr
, ERRNO_PIPEFAIL
, US
"Creation of pipe failed: %s",
2261 /* Now fork the process to do the real work in the subprocess, but first
2262 ensure that all cached resources are freed so that the subprocess starts with
2263 a clean slate and doesn't interfere with the parent process. */
2267 if ((pid
= fork()) == 0)
2269 BOOL replicate
= TRUE
;
2271 /* Prevent core dumps, as we don't want them in users' home directories.
2272 HP-UX doesn't have RLIMIT_CORE; I don't know how to do this in that
2273 system. Some experimental/developing systems (e.g. GNU/Hurd) may define
2274 RLIMIT_CORE but not support it in setrlimit(). For such systems, do not
2275 complain if the error is "not supported".
2277 There are two scenarios where changing the max limit has an effect. In one,
2278 the user is using a .forward and invoking a command of their choice via pipe;
2279 for these, we do need the max limit to be 0 unless the admin chooses to
2280 permit an increased limit. In the other, the command is invoked directly by
2281 the transport and is under administrator control, thus being able to raise
2282 the limit aids in debugging. So there's no general always-right answer.
2284 Thus we inhibit core-dumps completely but let individual transports, while
2285 still root, re-raise the limits back up to aid debugging. We make the
2286 default be no core-dumps -- few enough people can use core dumps in
2287 diagnosis that it's reasonable to make them something that has to be explicitly requested.
2294 if (setrlimit(RLIMIT_CORE
, &rl
) < 0)
2296 # ifdef SETRLIMIT_NOT_SUPPORTED
2297 if (errno
!= ENOSYS
&& errno
!= ENOTSUP
)
2299 log_write(0, LOG_MAIN
|LOG_PANIC
, "setrlimit(RLIMIT_CORE) failed: %s",
2304 /* Reset the random number generator, so different processes don't all
2305 have the same sequence. */
2309 /* If the transport has a setup entry, call this first, while still
2310 privileged. (Appendfile uses this to expand quota, for example, while
2311 able to read private files.) */
2313 if (addr
->transport
->setup
)
2314 switch((addr
->transport
->setup
)(addr
->transport
, addr
, NULL
, uid
, gid
,
2318 addr
->transport_return
= DEFER
;
2322 addr
->transport_return
= PANIC
;
2326 /* Ignore SIGINT and SIGTERM during delivery. Also ignore SIGUSR1, as
2327 when the process becomes unprivileged, it won't be able to write to the
2328 process log. SIGHUP is ignored throughout exim, except when it is being
2331 signal(SIGINT
, SIG_IGN
);
2332 signal(SIGTERM
, SIG_IGN
);
2333 signal(SIGUSR1
, SIG_IGN
);
2335 /* Close the unwanted half of the pipe, and set close-on-exec for the other
2336 half - for transports that exec things (e.g. pipe). Then set the required
2339 (void)close(pfd
[pipe_read
]);
2340 (void)fcntl(pfd
[pipe_write
], F_SETFD
, fcntl(pfd
[pipe_write
], F_GETFD
) |
2342 exim_setugid(uid
, gid
, use_initgroups
,
2343 string_sprintf("local delivery to %s <%s> transport=%s", addr
->local_part
,
2344 addr
->address
, addr
->transport
->name
));
2348 debug_printf(" home=%s current=%s\n", deliver_home
, working_directory
);
2349 for (address_item
* batched
= addr
->next
; batched
; batched
= batched
->next
)
2350 debug_printf("additional batched address: %s\n", batched
->address
);
2353 /* Set an appropriate working directory. */
2355 if (Uchdir(working_directory
) < 0)
2357 addr
->transport_return
= DEFER
;
2358 addr
->basic_errno
= errno
;
2359 addr
->message
= string_sprintf("failed to chdir to %s", working_directory
);
2362 /* If successful, call the transport */
2367 set_process_info("delivering %s to %s using %s", message_id
,
2368 addr
->local_part
, addr
->transport
->name
);
2370 /* Setting this global in the subprocess means we need never clear it */
2371 transport_name
= addr
->transport
->name
;
2373 /* If a transport filter has been specified, set up its argument list.
2374 Any errors will get put into the address, and FALSE yielded. */
2376 if (addr
->transport
->filter_command
)
2378 ok
= transport_set_up_command(&transport_filter_argv
,
2379 addr
->transport
->filter_command
,
2380 TRUE
, PANIC
, addr
, US
"transport filter", NULL
);
2381 transport_filter_timeout
= addr
->transport
->filter_timeout
;
2383 else transport_filter_argv
= NULL
;
2387 debug_print_string(addr
->transport
->debug_string
);
2388 replicate
= !(addr
->transport
->info
->code
)(addr
->transport
, addr
);
2392 /* Pass the results back down the pipe. If necessary, first replicate the
2393 status in the top address to the others in the batch. The label is the
2394 subject of a goto when a call to the transport's setup function fails. We
2395 pass the pointer to the transport back in case it got changed as a result of
2396 file_format in appendfile. */
2400 if (replicate
) replicate_status(addr
);
2401 for (addr2
= addr
; addr2
; addr2
= addr2
->next
)
2404 int local_part_length
= Ustrlen(addr2
->local_part
);
2408 if( (ret
= write(pfd
[pipe_write
], &addr2
->transport_return
, sizeof(int))) != sizeof(int)
2409 || (ret
= write(pfd
[pipe_write
], &transport_count
, sizeof(transport_count
))) != sizeof(transport_count
)
2410 || (ret
= write(pfd
[pipe_write
], &addr2
->flags
, sizeof(addr2
->flags
))) != sizeof(addr2
->flags
)
2411 || (ret
= write(pfd
[pipe_write
], &addr2
->basic_errno
, sizeof(int))) != sizeof(int)
2412 || (ret
= write(pfd
[pipe_write
], &addr2
->more_errno
, sizeof(int))) != sizeof(int)
2413 || (ret
= write(pfd
[pipe_write
], &addr2
->delivery_time
, sizeof(struct timeval
))) != sizeof(struct timeval
)
2414 || (ret
= write(pfd
[pipe_write
], &addr2
->special_action
, sizeof(int))) != sizeof(int)
2415 || (ret
= write(pfd
[pipe_write
], &addr2
->transport
,
2416 sizeof(transport_instance
*))) != sizeof(transport_instance
*)
2418 /* For a file delivery, pass back the local part, in case the original
2419 was only part of the final delivery path. This gives more complete
2422 || (testflag(addr2
, af_file
)
2423 && ( (ret
= write(pfd
[pipe_write
], &local_part_length
, sizeof(int))) != sizeof(int)
2424 || (ret
= write(pfd
[pipe_write
], addr2
->local_part
, local_part_length
)) != local_part_length
2428 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed writing transport results to pipe: %s",
2429 ret
== -1 ? strerror(errno
) : "short write");
2431 /* Now any messages */
2433 for (i
= 0, s
= addr2
->message
; i
< 2; i
++, s
= addr2
->user_message
)
2435 int message_length
= s
? Ustrlen(s
) + 1 : 0;
2436 if( (ret
= write(pfd
[pipe_write
], &message_length
, sizeof(int))) != sizeof(int)
2437 || message_length
> 0 && (ret
= write(pfd
[pipe_write
], s
, message_length
)) != message_length
2439 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed writing transport results to pipe: %s",
2440 ret
== -1 ? strerror(errno
) : "short write");
2444 /* OK, this process is now done. Free any cached resources that it opened,
2445 and close the pipe we were writing down before exiting. */
2447 (void)close(pfd
[pipe_write
]);
2452 /* Back in the main process: panic if the fork did not succeed. This seems
2453 better than returning an error - if forking is failing it is probably best
2454 not to try other deliveries for this message. */
2457 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Fork failed for local delivery to %s",
2460 /* Read the pipe to get the delivery status codes and error messages. Our copy
2461 of the writing end must be closed first, as otherwise read() won't return zero
2462 on an empty pipe. We check that a status exists for each address before
2463 overwriting the address structure. If data is missing, the default DEFER status
2464 will remain. Afterwards, close the reading end. */
2466 (void)close(pfd
[pipe_write
]);
2468 for (addr2
= addr
; addr2
; addr2
= addr2
->next
)
2470 if ((len
= read(pfd
[pipe_read
], &status
, sizeof(int))) > 0)
2475 addr2
->transport_return
= status
;
2476 len
= read(pfd
[pipe_read
], &transport_count
,
2477 sizeof(transport_count
));
2478 len
= read(pfd
[pipe_read
], &addr2
->flags
, sizeof(addr2
->flags
));
2479 len
= read(pfd
[pipe_read
], &addr2
->basic_errno
, sizeof(int));
2480 len
= read(pfd
[pipe_read
], &addr2
->more_errno
, sizeof(int));
2481 len
= read(pfd
[pipe_read
], &addr2
->delivery_time
, sizeof(struct timeval
));
2482 len
= read(pfd
[pipe_read
], &addr2
->special_action
, sizeof(int));
2483 len
= read(pfd
[pipe_read
], &addr2
->transport
,
2484 sizeof(transport_instance
*));
2486 if (testflag(addr2
, af_file
))
2489 if ( read(pfd
[pipe_read
], &llen
, sizeof(int)) != sizeof(int)
2490 || llen
> 64*4 /* limit from rfc 5821, times I18N factor */
2493 log_write(0, LOG_MAIN
|LOG_PANIC
, "bad local_part length read"
2494 " from delivery subprocess");
2497 /* sanity-checked llen so disable the Coverity error */
2498 /* coverity[tainted_data] */
2499 if (read(pfd
[pipe_read
], big_buffer
, llen
) != llen
)
2501 log_write(0, LOG_MAIN
|LOG_PANIC
, "bad local_part read"
2502 " from delivery subprocess");
2505 big_buffer
[llen
] = 0;
2506 addr2
->local_part
= string_copy(big_buffer
);
2509 for (i
= 0, sptr
= &addr2
->message
; i
< 2; i
++, sptr
= &addr2
->user_message
)
2512 len
= read(pfd
[pipe_read
], &message_length
, sizeof(int));
2513 if (message_length
> 0)
2515 len
= read(pfd
[pipe_read
], big_buffer
, message_length
);
2516 big_buffer
[big_buffer_size
-1] = '\0'; /* guard byte */
2517 if (len
> 0) *sptr
= string_copy(big_buffer
);
2524 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to read delivery status for %s "
2525 "from delivery subprocess", addr2
->unique
);
2530 (void)close(pfd
[pipe_read
]);
2532 /* Unless shadowing, write all successful addresses immediately to the journal
2533 file, to ensure they are recorded asap. For homonymic addresses, use the base
2534 address plus the transport name. Failure to write the journal is panic-worthy,
2535 but don't stop, as it may prove possible subsequently to update the spool file
2536 in order to record the delivery. */
2540 for (addr2
= addr
; addr2
; addr2
= addr2
->next
)
2541 if (addr2
->transport_return
== OK
)
2543 if (testflag(addr2
, af_homonym
))
2544 sprintf(CS big_buffer
, "%.500s/%s\n", addr2
->unique
+ 3, tp
->name
);
2546 sprintf(CS big_buffer
, "%.500s\n", addr2
->unique
);
2548 /* In the test harness, wait just a bit to let the subprocess finish off
2549 any debug output etc first. */
2551 testharness_pause_ms(300);
2553 DEBUG(D_deliver
) debug_printf("journalling %s", big_buffer
);
2554 len
= Ustrlen(big_buffer
);
2555 if (write(journal_fd
, big_buffer
, len
) != len
)
2556 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to update journal for %s: %s",
2557 big_buffer
, strerror(errno
));
2560 /* Ensure the journal file is pushed out to disk. */
2562 if (EXIMfsync(journal_fd
) < 0)
2563 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to fsync journal: %s",
2567 /* Wait for the process to finish. If it terminates with a non-zero code,
2568 freeze the message (except for SIGTERM, SIGKILL and SIGQUIT), but leave the
2569 status values of all the addresses as they are. Take care to handle the case
2570 when the subprocess doesn't seem to exist. This has been seen on one system
2571 when Exim was called from an MUA that set SIGCHLD to SIG_IGN. When that
2572 happens, wait() doesn't recognize the termination of child processes. Exim now
2573 resets SIGCHLD to SIG_DFL, but this code should still be robust. */
2575 while ((rc
= wait(&status
)) != pid
)
2576 if (rc
< 0 && errno
== ECHILD
) /* Process has vanished */
2578 log_write(0, LOG_MAIN
, "%s transport process vanished unexpectedly",
2579 addr
->transport
->driver_name
);
2584 if ((status
& 0xffff) != 0)
2586 int msb
= (status
>> 8) & 255;
2587 int lsb
= status
& 255;
2588 int code
= (msb
== 0)? (lsb
& 0x7f) : msb
;
2589 if (msb
!= 0 || (code
!= SIGTERM
&& code
!= SIGKILL
&& code
!= SIGQUIT
))
2590 addr
->special_action
= SPECIAL_FREEZE
;
2591 log_write(0, LOG_MAIN
|LOG_PANIC
, "%s transport process returned non-zero "
2592 "status 0x%04x: %s %d",
2593 addr
->transport
->driver_name
,
2595 msb
== 0 ? "terminated by signal" : "exit code",
2599 /* If SPECIAL_WARN is set in the top address, send a warning message. */
2601 if (addr
->special_action
== SPECIAL_WARN
&& addr
->transport
->warn_message
)
2604 uschar
*warn_message
;
2607 DEBUG(D_deliver
) debug_printf("Warning message requested by transport\n");
2609 if (!(warn_message
= expand_string(addr
->transport
->warn_message
)))
2610 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand \"%s\" (warning "
2611 "message for %s transport): %s", addr
->transport
->warn_message
,
2612 addr
->transport
->name
, expand_string_message
);
2614 else if ((pid
= child_open_exim(&fd
)) > 0)
2616 FILE *f
= fdopen(fd
, "wb");
2617 if (errors_reply_to
&& !contains_header(US
"Reply-To", warn_message
))
2618 fprintf(f
, "Reply-To: %s\n", errors_reply_to
);
2619 fprintf(f
, "Auto-Submitted: auto-replied\n");
2620 if (!contains_header(US
"From", warn_message
))
2622 fprintf(f
, "%s", CS warn_message
);
2624 /* Close and wait for child process to complete, without a timeout. */
2627 (void)child_close(pid
, 0);
2630 addr
->special_action
= SPECIAL_NONE
;
2637 /* Check transport for the given concurrency limit. Return TRUE if over
2638 the limit (or an expansion failure), else FALSE and if there was a limit,
2639 the key for the hints database used for the concurrency count. */
2642 tpt_parallel_check(transport_instance
* tp
, address_item
* addr
, uschar
** key
)
2644 unsigned max_parallel
;
2646 if (!tp
->max_parallel
) return FALSE
;
2648 max_parallel
= (unsigned) expand_string_integer(tp
->max_parallel
, TRUE
);
2649 if (expand_string_message
)
2651 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand max_parallel option "
2652 "in %s transport (%s): %s", tp
->name
, addr
->address
,
2653 expand_string_message
);
2657 if (max_parallel
> 0)
2659 uschar
* serialize_key
= string_sprintf("tpt-serialize-%s", tp
->name
);
2660 if (!enq_start(serialize_key
, max_parallel
))
2662 address_item
* next
;
2664 debug_printf("skipping tpt %s because concurrency limit %u reached\n",
2665 tp
->name
, max_parallel
);
2669 addr
->message
= US
"concurrency limit reached for transport";
2670 addr
->basic_errno
= ERRNO_TRETRY
;
2671 post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_TRANSPORT
, 0);
2672 } while ((addr
= next
));
2675 *key
= serialize_key
;
2682 /*************************************************
2683 * Do local deliveries *
2684 *************************************************/
2686 /* This function processes the list of addresses in addr_local. True local
2687 deliveries are always done one address at a time. However, local deliveries can
2688 be batched up in some cases. Typically this is when writing batched SMTP output
2689 files for use by some external transport mechanism, or when running local
2690 deliveries over LMTP.
2697 do_local_deliveries(void)
2700 open_db
*dbm_file
= NULL
;
2701 time_t now
= time(NULL
);
2703 /* Loop until we have exhausted the supply of local deliveries */
2707 struct timeval delivery_start
;
2708 struct timeval deliver_time
;
2709 address_item
*addr2
, *addr3
, *nextaddr
;
2710 int logflags
= LOG_MAIN
;
2711 int logchar
= f
.dont_deliver
? '*' : '=';
2712 transport_instance
*tp
;
2713 uschar
* serialize_key
= NULL
;
2715 /* Pick the first undelivered address off the chain */
2717 address_item
*addr
= addr_local
;
2718 addr_local
= addr
->next
;
2721 DEBUG(D_deliver
|D_transport
)
2722 debug_printf("--------> %s <--------\n", addr
->address
);
2724 /* An internal disaster if there is no transport. Should not occur! */
2726 if (!(tp
= addr
->transport
))
2728 logflags
|= LOG_PANIC
;
2729 f
.disable_logging
= FALSE
; /* Jic */
2730 addr
->message
= addr
->router
2731 ? string_sprintf("No transport set by %s router", addr
->router
->name
)
2732 : US
"No transport set by system filter";
2733 post_process_one(addr
, DEFER
, logflags
, EXIM_DTYPE_TRANSPORT
, 0);
2737 /* Check that this base address hasn't previously been delivered to this
2738 transport. The check is necessary at this point to handle homonymic addresses
2739 correctly in cases where the pattern of redirection changes between delivery
2740 attempts. Non-homonymic previous delivery is detected earlier, at routing
2743 if (previously_transported(addr
, FALSE
)) continue;
2745 /* There are weird cases where logging is disabled */
2747 f
.disable_logging
= tp
->disable_logging
;
2749 /* Check for batched addresses and possible amalgamation. Skip all the work
2750 if either batch_max <= 1 or there aren't any other addresses for local
2753 if (tp
->batch_max
> 1 && addr_local
)
2755 int batch_count
= 1;
2756 BOOL uses_dom
= readconf_depends((driver_instance
*)tp
, US
"domain");
2757 BOOL uses_lp
= ( testflag(addr
, af_pfr
)
2758 && (testflag(addr
, af_file
) || addr
->local_part
[0] == '|')
2760 || readconf_depends((driver_instance
*)tp
, US
"local_part");
2761 uschar
*batch_id
= NULL
;
2762 address_item
**anchor
= &addr_local
;
2763 address_item
*last
= addr
;
2766 /* Expand the batch_id string for comparison with other addresses.
2767 Expansion failure suppresses batching. */
2771 deliver_set_expansions(addr
);
2772 batch_id
= expand_string(tp
->batch_id
);
2773 deliver_set_expansions(NULL
);
2776 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand batch_id option "
2777 "in %s transport (%s): %s", tp
->name
, addr
->address
,
2778 expand_string_message
);
2779 batch_count
= tp
->batch_max
;
2783 /* Until we reach the batch_max limit, pick off addresses which have the
2784 same characteristics. These are:
2787 not previously delivered (see comment about 50 lines above)
2788 same local part if the transport's configuration contains $local_part
2789 or if this is a file or pipe delivery from a redirection
2790 same domain if the transport's configuration contains $domain
2792 same additional headers
2793 same headers to be removed
2794 same uid/gid for running the transport
2795 same first host if a host list is set
2798 while ((next
= *anchor
) && batch_count
< tp
->batch_max
)
2801 tp
== next
->transport
2802 && !previously_transported(next
, TRUE
)
2803 && testflag(addr
, af_pfr
) == testflag(next
, af_pfr
)
2804 && testflag(addr
, af_file
) == testflag(next
, af_file
)
2805 && (!uses_lp
|| Ustrcmp(next
->local_part
, addr
->local_part
) == 0)
2806 && (!uses_dom
|| Ustrcmp(next
->domain
, addr
->domain
) == 0)
2807 && same_strings(next
->prop
.errors_address
, addr
->prop
.errors_address
)
2808 && same_headers(next
->prop
.extra_headers
, addr
->prop
.extra_headers
)
2809 && same_strings(next
->prop
.remove_headers
, addr
->prop
.remove_headers
)
2810 && same_ugid(tp
, addr
, next
)
2811 && ( !addr
->host_list
&& !next
->host_list
2814 && Ustrcmp(addr
->host_list
->name
, next
->host_list
->name
) == 0
2817 /* If the transport has a batch_id setting, batch_id will be non-NULL
2818 from the expansion outside the loop. Expand for this address and compare.
2819 Expansion failure makes this address ineligible for batching. */
2824 address_item
*save_nextnext
= next
->next
;
2825 next
->next
= NULL
; /* Expansion for a single address */
2826 deliver_set_expansions(next
);
2827 next
->next
= save_nextnext
;
2828 bid
= expand_string(tp
->batch_id
);
2829 deliver_set_expansions(NULL
);
2832 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand batch_id option "
2833 "in %s transport (%s): %s", tp
->name
, next
->address
,
2834 expand_string_message
);
2837 else ok
= (Ustrcmp(batch_id
, bid
) == 0);
2840 /* Take address into batch if OK. */
2844 *anchor
= next
->next
; /* Include the address */
2850 else anchor
= &next
->next
; /* Skip the address */
2854 /* We now have one or more addresses that can be delivered in a batch. Check
2855 whether the transport is prepared to accept a message of this size. If not,
2856 fail them all forthwith. If the expansion fails, or does not yield an
2857 integer, defer delivery. */
2859 if (tp
->message_size_limit
)
2861 int rc
= check_message_size(tp
, addr
);
2864 replicate_status(addr
);
2868 post_process_one(addr
, rc
, logflags
, EXIM_DTYPE_TRANSPORT
, 0);
2871 continue; /* With next batch of addresses */
2875 /* If we are not running the queue, or if forcing, all deliveries will be
2876 attempted. Otherwise, we must respect the retry times for each address. Even
2877 when not doing this, we need to set up the retry key string, and determine
2878 whether a retry record exists, because after a successful delivery, a delete
2879 retry item must be set up. Keep the retry database open only for the duration
2880 of these checks, rather than for all local deliveries, because some local
2881 deliveries (e.g. to pipes) can take a substantial time. */
2883 if (!(dbm_file
= dbfn_open(US
"retry", O_RDONLY
, &dbblock
, FALSE
, TRUE
)))
2885 DEBUG(D_deliver
|D_retry
|D_hints_lookup
)
2886 debug_printf("no retry data available\n");
2893 BOOL ok
= TRUE
; /* to deliver this address */
2896 /* Set up the retry key to include the domain or not, and change its
2897 leading character from "R" to "T". Must make a copy before doing this,
2898 because the old key may be pointed to from a "delete" retry item after
2901 retry_key
= string_copy(
2902 tp
->retry_use_local_part
? addr2
->address_retry_key
:
2903 addr2
->domain_retry_key
);
2906 /* Inspect the retry data. If there is no hints file, delivery happens. */
2910 dbdata_retry
*retry_record
= dbfn_read(dbm_file
, retry_key
);
2912 /* If there is no retry record, delivery happens. If there is,
2913 remember it exists so it can be deleted after a successful delivery. */
2917 setflag(addr2
, af_lt_retry_exists
);
2919 /* A retry record exists for this address. If queue running and not
2920 forcing, inspect its contents. If the record is too old, or if its
2921 retry time has come, or if it has passed its cutoff time, delivery
2926 debug_printf("retry record exists: age=%s ",
2927 readconf_printtime(now
- retry_record
->time_stamp
));
2928 debug_printf("(max %s)\n", readconf_printtime(retry_data_expire
));
2929 debug_printf(" time to retry = %s expired = %d\n",
2930 readconf_printtime(retry_record
->next_try
- now
),
2931 retry_record
->expired
);
2934 if (f
.queue_running
&& !f
.deliver_force
)
2936 ok
= (now
- retry_record
->time_stamp
> retry_data_expire
)
2937 || (now
>= retry_record
->next_try
)
2938 || retry_record
->expired
;
2940 /* If we haven't reached the retry time, there is one more check
2941 to do, which is for the ultimate address timeout. */
2944 ok
= retry_ultimate_address_timeout(retry_key
, addr2
->domain
,
2948 else DEBUG(D_retry
) debug_printf("no retry record exists\n");
2951 /* This address is to be delivered. Leave it on the chain. */
2956 addr2
= addr2
->next
;
2959 /* This address is to be deferred. Take it out of the chain, and
2960 post-process it as complete. Must take it out of the chain first,
2961 because post processing puts it on another chain. */
2965 address_item
*this = addr2
;
2966 this->message
= US
"Retry time not yet reached";
2967 this->basic_errno
= ERRNO_LRETRY
;
2968 addr2
= addr3
? (addr3
->next
= addr2
->next
)
2969 : (addr
= addr2
->next
);
2970 post_process_one(this, DEFER
, logflags
, EXIM_DTYPE_TRANSPORT
, 0);
2974 if (dbm_file
) dbfn_close(dbm_file
);
2976 /* If there are no addresses left on the chain, they all deferred. Loop
2977 for the next set of addresses. */
2979 if (!addr
) continue;
2981 /* If the transport is limited for parallellism, enforce that here.
2982 We use a hints DB entry, incremented here and decremented after
2983 the transport (and any shadow transport) completes. */
2985 if (tpt_parallel_check(tp
, addr
, &serialize_key
))
2987 if (expand_string_message
)
2989 logflags
|= LOG_PANIC
;
2993 post_process_one(addr
, DEFER
, logflags
, EXIM_DTYPE_TRANSPORT
, 0);
2994 } while ((addr
= addr2
));
2996 continue; /* Loop for the next set of addresses. */
3000 /* So, finally, we do have some addresses that can be passed to the
3001 transport. Before doing so, set up variables that are relevant to a
3004 deliver_set_expansions(addr
);
3006 gettimeofday(&delivery_start
, NULL
);
3007 deliver_local(addr
, FALSE
);
3008 timesince(&deliver_time
, &delivery_start
);
3010 /* If a shadow transport (which must perforce be another local transport), is
3011 defined, and its condition is met, we must pass the message to the shadow
3012 too, but only those addresses that succeeded. We do this by making a new
3013 chain of addresses - also to keep the original chain uncontaminated. We must
3014 use a chain rather than doing it one by one, because the shadow transport may
3017 NOTE: if the condition fails because of a lookup defer, there is nothing we
3021 && ( !tp
->shadow_condition
3022 || expand_check_condition(tp
->shadow_condition
, tp
->name
, US
"transport")
3025 transport_instance
*stp
;
3026 address_item
*shadow_addr
= NULL
;
3027 address_item
**last
= &shadow_addr
;
3029 for (stp
= transports
; stp
; stp
= stp
->next
)
3030 if (Ustrcmp(stp
->name
, tp
->shadow
) == 0) break;
3033 log_write(0, LOG_MAIN
|LOG_PANIC
, "shadow transport \"%s\" not found ",
3036 /* Pick off the addresses that have succeeded, and make clones. Put into
3037 the shadow_message field a pointer to the shadow_message field of the real
3040 else for (addr2
= addr
; addr2
; addr2
= addr2
->next
)
3041 if (addr2
->transport_return
== OK
)
3043 addr3
= store_get(sizeof(address_item
), FALSE
);
3046 addr3
->shadow_message
= US
&addr2
->shadow_message
;
3047 addr3
->transport
= stp
;
3048 addr3
->transport_return
= DEFER
;
3049 addr3
->return_filename
= NULL
;
3050 addr3
->return_file
= -1;
3052 last
= &addr3
->next
;
3055 /* If we found any addresses to shadow, run the delivery, and stick any
3056 message back into the shadow_message field in the original. */
3060 int save_count
= transport_count
;
3062 DEBUG(D_deliver
|D_transport
)
3063 debug_printf(">>>>>>>>>>>>>>>> Shadow delivery >>>>>>>>>>>>>>>>\n");
3064 deliver_local(shadow_addr
, TRUE
);
3066 for(; shadow_addr
; shadow_addr
= shadow_addr
->next
)
3068 int sresult
= shadow_addr
->transport_return
;
3069 *(uschar
**)shadow_addr
->shadow_message
=
3071 ? string_sprintf(" ST=%s", stp
->name
)
3072 : string_sprintf(" ST=%s (%s%s%s)", stp
->name
,
3073 shadow_addr
->basic_errno
<= 0
3075 : US
strerror(shadow_addr
->basic_errno
),
3076 shadow_addr
->basic_errno
<= 0 || !shadow_addr
->message
3079 shadow_addr
->message
3080 ? shadow_addr
->message
3081 : shadow_addr
->basic_errno
<= 0
3085 DEBUG(D_deliver
|D_transport
)
3086 debug_printf("%s shadow transport returned %s for %s\n",
3087 stp
->name
, rc_to_string(sresult
), shadow_addr
->address
);
3090 DEBUG(D_deliver
|D_transport
)
3091 debug_printf(">>>>>>>>>>>>>>>> End shadow delivery >>>>>>>>>>>>>>>>\n");
3093 transport_count
= save_count
; /* Restore original transport count */
3097 /* Cancel the expansions that were set up for the delivery. */
3099 deliver_set_expansions(NULL
);
3101 /* If the transport was parallelism-limited, decrement the hints DB record. */
3103 if (serialize_key
) enq_end(serialize_key
);
3105 /* Now we can process the results of the real transport. We must take each
3106 address off the chain first, because post_process_one() puts it on another
3109 for (addr2
= addr
; addr2
; addr2
= nextaddr
)
3111 int result
= addr2
->transport_return
;
3112 nextaddr
= addr2
->next
;
3114 DEBUG(D_deliver
|D_transport
)
3115 debug_printf("%s transport returned %s for %s\n",
3116 tp
->name
, rc_to_string(result
), addr2
->address
);
3118 /* If there is a retry_record, or if delivery is deferred, build a retry
3119 item for setting a new retry time or deleting the old retry record from
3120 the database. These items are handled all together after all addresses
3121 have been handled (so the database is open just for a short time for
3124 if (result
== DEFER
|| testflag(addr2
, af_lt_retry_exists
))
3126 int flags
= result
== DEFER
? 0 : rf_delete
;
3127 uschar
*retry_key
= string_copy(tp
->retry_use_local_part
3128 ? addr2
->address_retry_key
: addr2
->domain_retry_key
);
3130 retry_add_item(addr2
, retry_key
, flags
);
3133 /* Done with this address */
3135 addr2
->delivery_time
= deliver_time
;
3136 post_process_one(addr2
, result
, logflags
, EXIM_DTYPE_TRANSPORT
, logchar
);
3138 /* If a pipe delivery generated text to be sent back, the result may be
3139 changed to FAIL, and we must copy this for subsequent addresses in the
3142 if (addr2
->transport_return
!= result
)
3144 for (addr3
= nextaddr
; addr3
; addr3
= addr3
->next
)
3146 addr3
->transport_return
= addr2
->transport_return
;
3147 addr3
->basic_errno
= addr2
->basic_errno
;
3148 addr3
->message
= addr2
->message
;
3150 result
= addr2
->transport_return
;
3153 /* Whether or not the result was changed to FAIL, we need to copy the
3154 return_file value from the first address into all the addresses of the
3155 batch, so they are all listed in the error message. */
3157 addr2
->return_file
= addr
->return_file
;
3159 /* Change log character for recording successful deliveries. */
3161 if (result
== OK
) logchar
= '-';
3163 } /* Loop back for next batch of addresses */
3169 /*************************************************
3170 * Sort remote deliveries *
3171 *************************************************/
3173 /* This function is called if remote_sort_domains is set. It arranges that the
3174 chain of addresses for remote deliveries is ordered according to the strings
3175 specified. Try to make this shuffling reasonably efficient by handling
3176 sequences of addresses rather than just single ones.
3183 sort_remote_deliveries(void)
3186 address_item
**aptr
= &addr_remote
;
3187 const uschar
*listptr
= remote_sort_domains
;
3192 && (pattern
= string_nextinlist(&listptr
, &sep
, patbuf
, sizeof(patbuf
)))
3195 address_item
*moved
= NULL
;
3196 address_item
**bptr
= &moved
;
3200 address_item
**next
;
3201 deliver_domain
= (*aptr
)->domain
; /* set $domain */
3202 if (match_isinlist(deliver_domain
, (const uschar
**)&pattern
, UCHAR_MAX
+1,
3203 &domainlist_anchor
, NULL
, MCL_DOMAIN
, TRUE
, NULL
) == OK
)
3205 aptr
= &(*aptr
)->next
;
3209 next
= &(*aptr
)->next
;
3211 && (deliver_domain
= (*next
)->domain
, /* Set $domain */
3212 match_isinlist(deliver_domain
, (const uschar
**)&pattern
, UCHAR_MAX
+1,
3213 &domainlist_anchor
, NULL
, MCL_DOMAIN
, TRUE
, NULL
)) != OK
3215 next
= &(*next
)->next
;
3217 /* If the batch of non-matchers is at the end, add on any that were
3218 extracted further up the chain, and end this iteration. Otherwise,
3219 extract them from the chain and hang on the moved chain. */
3231 aptr
= &(*aptr
)->next
;
3234 /* If the loop ended because the final address matched, *aptr will
3235 be NULL. Add on to the end any extracted non-matching addresses. If
3236 *aptr is not NULL, the loop ended via "break" when *next is null, that
3237 is, there was a string of non-matching addresses at the end. In this
3238 case the extracted addresses have already been added on the end. */
3240 if (!*aptr
) *aptr
= moved
;
3245 debug_printf("remote addresses after sorting:\n");
3246 for (address_item
* addr
= addr_remote
; addr
; addr
= addr
->next
)
3247 debug_printf(" %s\n", addr
->address
);
3253 /*************************************************
3254 * Read from pipe for remote delivery subprocess *
3255 *************************************************/
3257 /* This function is called when the subprocess is complete, but can also be
3258 called before it is complete, in order to empty a pipe that is full (to prevent
3259 deadlock). It must therefore keep track of its progress in the parlist data
3262 We read the pipe to get the delivery status codes and a possible error message
3263 for each address, optionally preceded by unusability data for the hosts and
3264 also by optional retry data.
3266 Read in large chunks into the big buffer and then scan through, interpreting
3267 the data therein. In most cases, only a single read will be necessary. No
3268 individual item will ever be anywhere near 2500 bytes in length, so by ensuring
3269 that we read the next chunk when there is less than 2500 bytes left in the
3270 non-final chunk, we can assume each item is complete in the buffer before
3271 handling it. Each item is written using a single write(), which is atomic for
3272 small items (less than PIPE_BUF, which seems to be at least 512 in any Unix and
3273 often bigger) so even if we are reading while the subprocess is still going, we
3274 should never have only a partial item in the buffer.
3276 hs12: This assumption is not true anymore, since we get quite large items (certificate
3277 information and such).
3280 poffset the offset of the parlist item
3281 eop TRUE if the process has completed
3283 Returns: TRUE if the terminating 'Z' item has been read,
3284 or there has been a disaster (i.e. no more data needed);
3289 par_read_pipe(int poffset
, BOOL eop
)
3292 pardata
*p
= parlist
+ poffset
;
3293 address_item
*addrlist
= p
->addrlist
;
3294 address_item
*addr
= p
->addr
;
3298 uschar
*msg
= p
->msg
;
3299 BOOL done
= p
->done
;
3301 /* Loop through all items, reading from the pipe when necessary. The pipe
3302 used to be non-blocking. But I do not see a reason for using non-blocking I/O
3303 here, as the preceding select() tells us, if data is available for reading.
3305 A read() on a "selected" handle should never block, but(!) it may return
3306 less data then we expected. (The buffer size we pass to read() shouldn't be
3307 understood as a "request", but as a "limit".)
3309 Each separate item is written to the pipe in a timely manner. But, especially for
3310 larger items, the read(2) may already return partial data from the write(2).
3312 The write is atomic mostly (depending on the amount written), but atomic does
3313 not imply "all or noting", it just is "not intermixed" with other writes on the
3314 same channel (pipe).
3318 DEBUG(D_deliver
) debug_printf("reading pipe for subprocess %d (%s)\n",
3319 (int)p
->pid
, eop
? "ended" : "not ended yet");
3323 retry_item
*r
, **rp
;
3324 uschar pipeheader
[PIPE_HEADER_SIZE
+1];
3325 uschar
*id
= &pipeheader
[0];
3326 uschar
*subid
= &pipeheader
[1];
3327 uschar
*ptr
= big_buffer
;
3328 size_t required
= PIPE_HEADER_SIZE
; /* first the pipehaeder, later the data */
3331 DEBUG(D_deliver
) debug_printf(
3332 "expect %lu bytes (pipeheader) from tpt process %d\n", (u_long
)required
, pid
);
3334 /* We require(!) all the PIPE_HEADER_SIZE bytes here, as we know,
3335 they're written in a timely manner, so waiting for the write shouldn't hurt a lot.
3336 If we get less, we can assume the subprocess do be done and do not expect any further
3337 information from it. */
3339 if ((got
= readn(fd
, pipeheader
, required
)) != required
)
3341 msg
= string_sprintf("got " SSIZE_T_FMT
" of %d bytes (pipeheader) "
3342 "from transport process %d for transport %s",
3343 got
, PIPE_HEADER_SIZE
, pid
, addr
->transport
->driver_name
);
3348 pipeheader
[PIPE_HEADER_SIZE
] = '\0';
3350 debug_printf("got %ld bytes (pipeheader) from transport process %d\n",
3354 /* If we can't decode the pipeheader, the subprocess seems to have a
3355 problem, we do not expect any furher information from it. */
3357 required
= Ustrtol(pipeheader
+2, &endc
, 10);
3360 msg
= string_sprintf("failed to read pipe "
3361 "from transport process %d for transport %s: error decoding size from header",
3362 pid
, addr
->transport
->driver_name
);
3369 debug_printf("expect %lu bytes (pipedata) from transport process %d\n",
3370 (u_long
)required
, pid
);
3372 /* Same as above, the transport process will write the bytes announced
3373 in a timely manner, so we can just wait for the bytes, getting less than expected
3374 is considered a problem of the subprocess, we do not expect anything else from it. */
3375 if ((got
= readn(fd
, big_buffer
, required
)) != required
)
3377 msg
= string_sprintf("got only " SSIZE_T_FMT
" of " SIZE_T_FMT
3378 " bytes (pipedata) from transport process %d for transport %s",
3379 got
, required
, pid
, addr
->transport
->driver_name
);
3384 /* Handle each possible type of item, assuming the complete item is
3385 available in store. */
3389 /* Host items exist only if any hosts were marked unusable. Match
3390 up by checking the IP address. */
3393 for (h
= addrlist
->host_list
; h
; h
= h
->next
)
3395 if (!h
->address
|| Ustrcmp(h
->address
, ptr
+2) != 0) continue;
3403 /* Retry items are sent in a preceding R item for each address. This is
3404 kept separate to keep each message short enough to guarantee it won't
3405 be split in the pipe. Hopefully, in the majority of cases, there won't in
3406 fact be any retry items at all.
3408 The complete set of retry items might include an item to delete a
3409 routing retry if there was a previous routing delay. However, routing
3410 retries are also used when a remote transport identifies an address error.
3411 In that case, there may also be an "add" item for the same key. Arrange
3412 that a "delete" item is dropped in favour of an "add" item. */
3415 if (!addr
) goto ADDR_MISMATCH
;
3417 DEBUG(D_deliver
|D_retry
)
3418 debug_printf("reading retry information for %s from subprocess\n",
3421 /* Cut out any "delete" items on the list. */
3423 for (rp
= &addr
->retries
; (r
= *rp
); rp
= &r
->next
)
3424 if (Ustrcmp(r
->key
, ptr
+1) == 0) /* Found item with same key */
3426 if (!(r
->flags
& rf_delete
)) break; /* It was not "delete" */
3427 *rp
= r
->next
; /* Excise a delete item */
3428 DEBUG(D_deliver
|D_retry
)
3429 debug_printf(" existing delete item dropped\n");
3432 /* We want to add a delete item only if there is no non-delete item;
3433 however we still have to step ptr through the data. */
3435 if (!r
|| !(*ptr
& rf_delete
))
3437 r
= store_get(sizeof(retry_item
), FALSE
);
3438 r
->next
= addr
->retries
;
3441 r
->key
= string_copy(ptr
);
3443 memcpy(&r
->basic_errno
, ptr
, sizeof(r
->basic_errno
));
3444 ptr
+= sizeof(r
->basic_errno
);
3445 memcpy(&r
->more_errno
, ptr
, sizeof(r
->more_errno
));
3446 ptr
+= sizeof(r
->more_errno
);
3447 r
->message
= *ptr
? string_copy(ptr
) : NULL
;
3448 DEBUG(D_deliver
|D_retry
) debug_printf(" added %s item\n",
3449 r
->flags
& rf_delete
? "delete" : "retry");
3454 DEBUG(D_deliver
|D_retry
)
3455 debug_printf(" delete item not added: non-delete item exists\n");
3458 ptr
+= sizeof(r
->basic_errno
) + sizeof(r
->more_errno
);
3464 /* Put the amount of data written into the parlist block */
3467 memcpy(&(p
->transport_count
), ptr
, sizeof(transport_count
));
3468 ptr
+= sizeof(transport_count
);
3471 /* Address items are in the order of items on the address chain. We
3472 remember the current address value in case this function is called
3473 several times to empty the pipe in stages. Information about delivery
3474 over TLS is sent in a preceding X item for each address. We don't put
3475 it in with the other info, in order to keep each message short enough to
3476 guarantee it won't be split in the pipe. */
3480 if (!addr
) goto ADDR_MISMATCH
; /* Below, in 'A' handler */
3484 addr
->tlsver
= addr
->cipher
= addr
->peerdn
= NULL
;
3488 addr
->cipher
= string_copy(ptr
);
3489 addr
->tlsver
= string_copyn(ptr
, Ustrchr(ptr
, ':') - ptr
);
3493 addr
->peerdn
= string_copy(ptr
);
3498 (void) tls_import_cert(ptr
, &addr
->peercert
);
3500 addr
->peercert
= NULL
;
3505 (void) tls_import_cert(ptr
, &addr
->ourcert
);
3507 addr
->ourcert
= NULL
;
3510 # ifndef DISABLE_OCSP
3512 addr
->ocsp
= *ptr
? *ptr
- '0' : OCSP_NOT_REQ
;
3518 #endif /*DISABLE_TLS*/
3520 case 'C': /* client authenticator information */
3523 case '1': addr
->authenticator
= *ptr
? string_copy(ptr
) : NULL
; break;
3524 case '2': addr
->auth_id
= *ptr
? string_copy(ptr
) : NULL
; break;
3525 case '3': addr
->auth_sndr
= *ptr
? string_copy(ptr
) : NULL
; break;
3530 #ifndef DISABLE_PRDR
3532 setflag(addr
, af_prdr_used
);
3539 #ifndef DISABLE_PIPE_CONNECT
3540 case 2: setflag(addr
, af_early_pipe
); /*FALLTHROUGH*/
3542 case 1: setflag(addr
, af_pipelining
); break;
3547 setflag(addr
, af_chunking_used
);
3551 setflag(addr
, af_tcp_fastopen_conn
);
3552 if (*subid
> '0') setflag(addr
, af_tcp_fastopen
);
3553 if (*subid
> '1') setflag(addr
, af_tcp_fastopen_data
);
3557 if (!addr
) goto ADDR_MISMATCH
;
3558 memcpy(&(addr
->dsn_aware
), ptr
, sizeof(addr
->dsn_aware
));
3559 ptr
+= sizeof(addr
->dsn_aware
);
3560 DEBUG(D_deliver
) debug_printf("DSN read: addr->dsn_aware = %d\n", addr
->dsn_aware
);
3567 msg
= string_sprintf("address count mismatch for data read from pipe "
3568 "for transport process %d for transport %s", pid
,
3569 addrlist
->transport
->driver_name
);
3576 #ifdef SUPPORT_SOCKS
3577 case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/
3578 proxy_session
= TRUE
; /*XXX should this be cleared somewhere? */
3583 proxy_local_address
= string_copy(ptr
);
3585 memcpy(&proxy_local_port
, ptr
, sizeof(proxy_local_port
));
3586 ptr
+= sizeof(proxy_local_port
);
3591 #ifdef EXPERIMENTAL_DSN_INFO
3592 case '1': /* must arrive before A0, and applies to that addr */
3593 /* Two strings: smtp_greeting and helo_response */
3594 addr
->smtp_greeting
= string_copy(ptr
);
3596 addr
->helo_response
= string_copy(ptr
);
3602 DEBUG(D_deliver
) debug_printf("A0 %s tret %d\n", addr
->address
, *ptr
);
3603 addr
->transport_return
= *ptr
++;
3604 addr
->special_action
= *ptr
++;
3605 memcpy(&addr
->basic_errno
, ptr
, sizeof(addr
->basic_errno
));
3606 ptr
+= sizeof(addr
->basic_errno
);
3607 memcpy(&addr
->more_errno
, ptr
, sizeof(addr
->more_errno
));
3608 ptr
+= sizeof(addr
->more_errno
);
3609 memcpy(&addr
->delivery_time
, ptr
, sizeof(addr
->delivery_time
));
3610 ptr
+= sizeof(addr
->delivery_time
);
3611 memcpy(&addr
->flags
, ptr
, sizeof(addr
->flags
));
3612 ptr
+= sizeof(addr
->flags
);
3613 addr
->message
= *ptr
? string_copy(ptr
) : NULL
;
3615 addr
->user_message
= *ptr
? string_copy(ptr
) : NULL
;
3618 /* Always two strings for host information, followed by the port number and DNSSEC mark */
3622 h
= store_get(sizeof(host_item
), FALSE
);
3623 h
->name
= string_copy(ptr
);
3625 h
->address
= string_copy(ptr
);
3627 memcpy(&h
->port
, ptr
, sizeof(h
->port
));
3628 ptr
+= sizeof(h
->port
);
3629 h
->dnssec
= *ptr
== '2' ? DS_YES
3630 : *ptr
== '1' ? DS_NO
3633 addr
->host_used
= h
;
3637 /* Finished with this address */
3644 /* Local interface address/port */
3646 if (*ptr
) sending_ip_address
= string_copy(ptr
);
3648 if (*ptr
) sending_port
= atoi(CS ptr
);
3652 /* Z marks the logical end of the data. It is followed by '0' if
3653 continue_transport was NULL at the end of transporting, otherwise '1'.
3654 We need to know when it becomes NULL during a delivery down a passed SMTP
3655 channel so that we don't try to pass anything more down it. Of course, for
3656 most normal messages it will remain NULL all the time. */
3661 continue_transport
= NULL
;
3662 continue_hostname
= NULL
;
3665 DEBUG(D_deliver
) debug_printf("Z0%c item read\n", *ptr
);
3668 /* Anything else is a disaster. */
3671 msg
= string_sprintf("malformed data (%d) read from pipe for transport "
3672 "process %d for transport %s", ptr
[-1], pid
,
3673 addr
->transport
->driver_name
);
3679 /* The done flag is inspected externally, to determine whether or not to
3680 call the function again when the process finishes. */
3684 /* If the process hadn't finished, and we haven't seen the end of the data
3685 or if we suffered a disaster, update the rest of the state, and return FALSE to
3686 indicate "not finished". */
3695 /* Close our end of the pipe, to prevent deadlock if the far end is still
3696 pushing stuff into it. */
3701 /* If we have finished without error, but haven't had data for every address,
3702 something is wrong. */
3705 msg
= string_sprintf("insufficient address data read from pipe "
3706 "for transport process %d for transport %s", pid
,
3707 addr
->transport
->driver_name
);
3709 /* If an error message is set, something has gone wrong in getting back
3710 the delivery data. Put the message into each address and freeze it. */
3713 for (addr
= addrlist
; addr
; addr
= addr
->next
)
3715 addr
->transport_return
= DEFER
;
3716 addr
->special_action
= SPECIAL_FREEZE
;
3717 addr
->message
= msg
;
3718 log_write(0, LOG_MAIN
|LOG_PANIC
, "Delivery status for %s: %s\n", addr
->address
, addr
->message
);
3721 /* Return TRUE to indicate we have got all we need from this process, even
3722 if it hasn't actually finished yet. */
3729 /*************************************************
3730 * Post-process a set of remote addresses *
3731 *************************************************/
3733 /* Do what has to be done immediately after a remote delivery for each set of
3734 addresses, then re-write the spool if necessary. Note that post_process_one
3735 puts the address on an appropriate queue; hence we must fish off the next
3736 one first. This function is also called if there is a problem with setting
3737 up a subprocess to do a remote delivery in parallel. In this case, the final
3738 argument contains a message, and the action must be forced to DEFER.
3741 addr pointer to chain of address items
3742 logflags flags for logging
3743 msg NULL for normal cases; -> error message for unexpected problems
3744 fallback TRUE if processing fallback hosts
3750 remote_post_process(address_item
*addr
, int logflags
, uschar
*msg
,
3753 /* If any host addresses were found to be unusable, add them to the unusable
3754 tree so that subsequent deliveries don't try them. */
3756 for (host_item
* h
= addr
->host_list
; h
; h
= h
->next
)
3758 if (h
->status
>= hstatus_unusable
) tree_add_unusable(h
);
3760 /* Now handle each address on the chain. The transport has placed '=' or '-'
3761 into the special_action field for each successful delivery. */
3765 address_item
*next
= addr
->next
;
3767 /* If msg == NULL (normal processing) and the result is DEFER and we are
3768 processing the main hosts and there are fallback hosts available, put the
3769 address on the list for fallback delivery. */
3771 if ( addr
->transport_return
== DEFER
3772 && addr
->fallback_hosts
3777 addr
->host_list
= addr
->fallback_hosts
;
3778 addr
->next
= addr_fallback
;
3779 addr_fallback
= addr
;
3780 DEBUG(D_deliver
) debug_printf("%s queued for fallback host(s)\n", addr
->address
);
3783 /* If msg is set (=> unexpected problem), set it in the address before
3784 doing the ordinary post processing. */
3790 addr
->message
= msg
;
3791 addr
->transport_return
= DEFER
;
3793 (void)post_process_one(addr
, addr
->transport_return
, logflags
,
3794 EXIM_DTYPE_TRANSPORT
, addr
->special_action
);
3802 /* If we have just delivered down a passed SMTP channel, and that was
3803 the last address, the channel will have been closed down. Now that
3804 we have logged that delivery, set continue_sequence to 1 so that
3805 any subsequent deliveries don't get "*" incorrectly logged. */
3807 if (!continue_transport
) continue_sequence
= 1;
3812 /*************************************************
3813 * Wait for one remote delivery subprocess *
3814 *************************************************/
3816 /* This function is called while doing remote deliveries when either the
3817 maximum number of processes exist and we need one to complete so that another
3818 can be created, or when waiting for the last ones to complete. It must wait for
3819 the completion of one subprocess, empty the control block slot, and return a
3820 pointer to the address chain.
3823 Returns: pointer to the chain of addresses handled by the process;
3824 NULL if no subprocess found - this is an unexpected error
3827 static address_item
*
3830 int poffset
, status
;
3831 address_item
*addr
, *addrlist
;
3834 set_process_info("delivering %s: waiting for a remote delivery subprocess "
3835 "to finish", message_id
);
3837 /* Loop until either a subprocess completes, or there are no subprocesses in
3838 existence - in which case give an error return. We cannot proceed just by
3839 waiting for a completion, because a subprocess may have filled up its pipe, and
3840 be waiting for it to be emptied. Therefore, if no processes have finished, we
3841 wait for one of the pipes to acquire some data by calling select(), with a
3842 timeout just in case.
3844 The simple approach is just to iterate after reading data from a ready pipe.
3845 This leads to non-ideal behaviour when the subprocess has written its final Z
3846 item, closed the pipe, and is in the process of exiting (the common case). A
3847 call to waitpid() yields nothing completed, but select() shows the pipe ready -
3848 reading it yields EOF, so you end up with busy-waiting until the subprocess has
3851 To avoid this, if all the data that is needed has been read from a subprocess
3852 after select(), an explicit wait() for it is done. We know that all it is doing
3853 is writing to the pipe and then exiting, so the wait should not be long.
3855 The non-blocking waitpid() is to some extent just insurance; if we could
3856 reliably detect end-of-file on the pipe, we could always know when to do a
3857 blocking wait() for a completed process. However, because some systems use
3858 NDELAY, which doesn't distinguish between EOF and pipe empty, it is easier to
3859 use code that functions without the need to recognize EOF.
3861 There's a double loop here just in case we end up with a process that is not in
3862 the list of remote delivery processes. Something has obviously gone wrong if
3863 this is the case. (For example, a process that is incorrectly left over from
3864 routing or local deliveries might be found.) The damage can be minimized by
3865 looping back and looking for another process. If there aren't any, the error
3866 return will happen. */
3868 for (;;) /* Normally we do not repeat this loop */
3870 while ((pid
= waitpid(-1, &status
, WNOHANG
)) <= 0)
3873 fd_set select_pipes
;
3874 int maxpipe
, readycount
;
3876 /* A return value of -1 can mean several things. If errno != ECHILD, it
3877 either means invalid options (which we discount), or that this process was
3878 interrupted by a signal. Just loop to try the waitpid() again.
3880 If errno == ECHILD, waitpid() is telling us that there are no subprocesses
3881 in existence. This should never happen, and is an unexpected error.
3882 However, there is a nasty complication when running under Linux. If "strace
3883 -f" is being used under Linux to trace this process and its children,
3884 subprocesses are "stolen" from their parents and become the children of the
3885 tracing process. A general wait such as the one we've just obeyed returns
3886 as if there are no children while subprocesses are running. Once a
3887 subprocess completes, it is restored to the parent, and waitpid(-1) finds
3888 it. Thanks to Joachim Wieland for finding all this out and suggesting a
3891 This does not happen using "truss" on Solaris, nor (I think) with other
3892 tracing facilities on other OS. It seems to be specific to Linux.
3894 What we do to get round this is to use kill() to see if any of our
3895 subprocesses are still in existence. If kill() gives an OK return, we know
3896 it must be for one of our processes - it can't be for a re-use of the pid,
3897 because if our process had finished, waitpid() would have found it. If any
3898 of our subprocesses are in existence, we proceed to use select() as if
3899 waitpid() had returned zero. I think this is safe. */
3903 if (errno
!= ECHILD
) continue; /* Repeats the waitpid() */
3906 debug_printf("waitpid() returned -1/ECHILD: checking explicitly "
3907 "for process existence\n");
3909 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3911 if ((pid
= parlist
[poffset
].pid
) != 0 && kill(pid
, 0) == 0)
3913 DEBUG(D_deliver
) debug_printf("process %d still exists: assume "
3914 "stolen by strace\n", (int)pid
);
3915 break; /* With poffset set */
3919 if (poffset
>= remote_max_parallel
)
3921 DEBUG(D_deliver
) debug_printf("*** no delivery children found\n");
3922 return NULL
; /* This is the error return */
3926 /* A pid value greater than 0 breaks the "while" loop. A negative value has
3927 been handled above. A return value of zero means that there is at least one
3928 subprocess, but there are no completed subprocesses. See if any pipes are
3929 ready with any data for reading. */
3931 DEBUG(D_deliver
) debug_printf("selecting on subprocess pipes\n");
3934 FD_ZERO(&select_pipes
);
3935 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3936 if (parlist
[poffset
].pid
!= 0)
3938 int fd
= parlist
[poffset
].fd
;
3939 FD_SET(fd
, &select_pipes
);
3940 if (fd
> maxpipe
) maxpipe
= fd
;
3943 /* Stick in a 60-second timeout, just in case. */
3948 readycount
= select(maxpipe
+ 1, (SELECT_ARG2_TYPE
*)&select_pipes
,
3951 /* Scan through the pipes and read any that are ready; use the count
3952 returned by select() to stop when there are no more. Select() can return
3953 with no processes (e.g. if interrupted). This shouldn't matter.
3955 If par_read_pipe() returns TRUE, it means that either the terminating Z was
3956 read, or there was a disaster. In either case, we are finished with this
3957 process. Do an explicit wait() for the process and break the main loop if
3960 It turns out that we have to deal with the case of an interrupted system
3961 call, which can happen on some operating systems if the signal handling is
3962 set up to do that by default. */
3965 readycount
> 0 && poffset
< remote_max_parallel
;
3968 if ( (pid
= parlist
[poffset
].pid
) != 0
3969 && FD_ISSET(parlist
[poffset
].fd
, &select_pipes
)
3973 if (par_read_pipe(poffset
, FALSE
)) /* Finished with this pipe */
3974 for (;;) /* Loop for signals */
3976 pid_t endedpid
= waitpid(pid
, &status
, 0);
3977 if (endedpid
== pid
) goto PROCESS_DONE
;
3978 if (endedpid
!= (pid_t
)(-1) || errno
!= EINTR
)
3979 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Unexpected error return "
3980 "%d (errno = %d) from waitpid() for process %d",
3981 (int)endedpid
, errno
, (int)pid
);
3986 /* Now go back and look for a completed subprocess again. */
3989 /* A completed process was detected by the non-blocking waitpid(). Find the
3990 data block that corresponds to this subprocess. */
3992 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
3993 if (pid
== parlist
[poffset
].pid
) break;
3995 /* Found the data block; this is a known remote delivery process. We don't
3996 need to repeat the outer loop. This should be what normally happens. */
3998 if (poffset
< remote_max_parallel
) break;
4000 /* This situation is an error, but it's probably better to carry on looking
4001 for another process than to give up (as we used to do). */
4003 log_write(0, LOG_MAIN
|LOG_PANIC
, "Process %d finished: not found in remote "
4004 "transport process list", pid
);
4005 } /* End of the "for" loop */
4007 /* Come here when all the data was completely read after a select(), and
4008 the process in pid has been wait()ed for. */
4015 debug_printf("remote delivery process %d ended\n", (int)pid
);
4017 debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid
,
4021 set_process_info("delivering %s", message_id
);
4023 /* Get the chain of processed addresses */
4025 addrlist
= parlist
[poffset
].addrlist
;
4027 /* If the process did not finish cleanly, record an error and freeze (except
4028 for SIGTERM, SIGKILL and SIGQUIT), and also ensure the journal is not removed,
4029 in case the delivery did actually happen. */
4031 if ((status
& 0xffff) != 0)
4034 int msb
= (status
>> 8) & 255;
4035 int lsb
= status
& 255;
4036 int code
= (msb
== 0)? (lsb
& 0x7f) : msb
;
4038 msg
= string_sprintf("%s transport process returned non-zero status 0x%04x: "
4040 addrlist
->transport
->driver_name
,
4042 (msb
== 0)? "terminated by signal" : "exit code",
4045 if (msb
!= 0 || (code
!= SIGTERM
&& code
!= SIGKILL
&& code
!= SIGQUIT
))
4046 addrlist
->special_action
= SPECIAL_FREEZE
;
4048 for (addr
= addrlist
; addr
; addr
= addr
->next
)
4050 addr
->transport_return
= DEFER
;
4051 addr
->message
= msg
;
4054 remove_journal
= FALSE
;
4057 /* Else complete reading the pipe to get the result of the delivery, if all
4058 the data has not yet been obtained. */
4060 else if (!parlist
[poffset
].done
) (void)par_read_pipe(poffset
, TRUE
);
4062 /* Put the data count and return path into globals, mark the data slot unused,
4063 decrement the count of subprocesses, and return the address chain. */
4065 transport_count
= parlist
[poffset
].transport_count
;
4066 used_return_path
= parlist
[poffset
].return_path
;
4067 parlist
[poffset
].pid
= 0;
4074 /*************************************************
4075 * Wait for subprocesses and post-process *
4076 *************************************************/
4078 /* This function waits for subprocesses until the number that are still running
4079 is below a given threshold. For each complete subprocess, the addresses are
4080 post-processed. If we can't find a running process, there is some shambles.
4081 Better not bomb out, as that might lead to multiple copies of the message. Just
4082 log and proceed as if all done.
4085 max maximum number of subprocesses to leave running
4086 fallback TRUE if processing fallback hosts
4092 par_reduce(int max
, BOOL fallback
)
4094 while (parcount
> max
)
4096 address_item
*doneaddr
= par_wait();
4099 log_write(0, LOG_MAIN
|LOG_PANIC
,
4100 "remote delivery process count got out of step");
4105 transport_instance
* tp
= doneaddr
->transport
;
4106 if (tp
->max_parallel
)
4107 enq_end(string_sprintf("tpt-serialize-%s", tp
->name
));
4109 remote_post_process(doneaddr
, LOG_MAIN
, NULL
, fallback
);
4115 rmt_dlv_checked_write(int fd
, char id
, char subid
, void * buf
, ssize_t size
)
4117 uschar pipe_header
[PIPE_HEADER_SIZE
+1];
4118 size_t total_len
= PIPE_HEADER_SIZE
+ size
;
4120 struct iovec iov
[2] = {
4121 { pipe_header
, PIPE_HEADER_SIZE
}, /* indication about the data to expect */
4122 { buf
, size
} /* *the* data */
4127 /* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */
4128 /* complain to log if someone tries with buffer sizes we can't handle*/
4130 if (size
> BIG_BUFFER_SIZE
-1)
4132 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
4133 "Failed writing transport result to pipe: can't handle buffers > %d bytes. truncating!\n",
4135 size
= BIG_BUFFER_SIZE
;
4138 /* Should we check that we do not write more than PIPE_BUF? What would
4141 /* convert size to human readable string prepended by id and subid */
4142 if (PIPE_HEADER_SIZE
!= snprintf(CS pipe_header
, PIPE_HEADER_SIZE
+1, "%c%c%05ld",
4143 id
, subid
, (long)size
))
4144 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "header snprintf failed\n");
4146 DEBUG(D_deliver
) debug_printf("header write id:%c,subid:%c,size:%ld,final:%s\n",
4147 id
, subid
, (long)size
, pipe_header
);
4149 if ((ret
= writev(fd
, iov
, 2)) != total_len
)
4150 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
4151 "Failed writing transport result to pipe (%ld of %ld bytes): %s",
4152 (long)ret
, (long)total_len
, ret
== -1 ? strerror(errno
) : "short write");
4155 /*************************************************
4156 * Do remote deliveries *
4157 *************************************************/
4159 /* This function is called to process the addresses in addr_remote. We must
4160 pick off the queue all addresses that have the same transport, remote
4161 destination, and errors address, and hand them to the transport in one go,
4162 subject to some configured limitations. If this is a run to continue delivering
4163 to an existing delivery channel, skip all but those addresses that can go to
4164 that channel. The skipped addresses just get deferred.
4166 If mua_wrapper is set, all addresses must be able to be sent in a single
4167 transaction. If not, this function yields FALSE.
4169 In Exim 4, remote deliveries are always done in separate processes, even
4170 if remote_max_parallel = 1 or if there's only one delivery to do. The reason
4171 is so that the base process can retain privilege. This makes the
4172 implementation of fallback transports feasible (though not initially done.)
4174 We create up to the configured number of subprocesses, each of which passes
4175 back the delivery state via a pipe. (However, when sending down an existing
4176 connection, remote_max_parallel is forced to 1.)
4179 fallback TRUE if processing fallback hosts
4181 Returns: TRUE normally
4182 FALSE if mua_wrapper is set and the addresses cannot all be sent
4187 do_remote_deliveries(BOOL fallback
)
4192 parcount
= 0; /* Number of executing subprocesses */
4194 /* When sending down an existing channel, only do one delivery at a time.
4195 We use a local variable (parmax) to hold the maximum number of processes;
4196 this gets reduced from remote_max_parallel if we can't create enough pipes. */
4198 if (continue_transport
) remote_max_parallel
= 1;
4199 parmax
= remote_max_parallel
;
4201 /* If the data for keeping a list of processes hasn't yet been
4206 parlist
= store_get(remote_max_parallel
* sizeof(pardata
), FALSE
);
4207 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
4208 parlist
[poffset
].pid
= 0;
4211 /* Now loop for each remote delivery */
4213 for (int delivery_count
= 0; addr_remote
; delivery_count
++)
4219 int address_count
= 1;
4220 int address_count_max
;
4222 BOOL use_initgroups
;
4223 BOOL pipe_done
= FALSE
;
4224 transport_instance
*tp
;
4225 address_item
**anchor
= &addr_remote
;
4226 address_item
*addr
= addr_remote
;
4227 address_item
*last
= addr
;
4230 uschar
* serialize_key
= NULL
;
4232 /* Pull the first address right off the list. */
4234 addr_remote
= addr
->next
;
4237 DEBUG(D_deliver
|D_transport
)
4238 debug_printf("--------> %s <--------\n", addr
->address
);
4240 /* If no transport has been set, there has been a big screw-up somewhere. */
4242 if (!(tp
= addr
->transport
))
4244 f
.disable_logging
= FALSE
; /* Jic */
4245 panicmsg
= US
"No transport set by router";
4246 goto panic_continue
;
4249 /* Check that this base address hasn't previously been delivered to this
4250 transport. The check is necessary at this point to handle homonymic addresses
4251 correctly in cases where the pattern of redirection changes between delivery
4252 attempts. Non-homonymic previous delivery is detected earlier, at routing
4255 if (previously_transported(addr
, FALSE
)) continue;
4257 /* Force failure if the message is too big. */
4259 if (tp
->message_size_limit
)
4261 int rc
= check_message_size(tp
, addr
);
4264 addr
->transport_return
= rc
;
4265 remote_post_process(addr
, LOG_MAIN
, NULL
, fallback
);
4270 /* Get the flag which specifies whether the transport can handle different
4271 domains that nevertheless resolve to the same set of hosts. If it needs
4272 expanding, get variables set: $address_data, $domain_data, $localpart_data,
4273 $host, $host_address, $host_port. */
4274 if (tp
->expand_multi_domain
)
4275 deliver_set_expansions(addr
);
4277 if (exp_bool(addr
, US
"transport", tp
->name
, D_transport
,
4278 US
"multi_domain", tp
->multi_domain
, tp
->expand_multi_domain
,
4279 &multi_domain
) != OK
)
4281 deliver_set_expansions(NULL
);
4282 panicmsg
= addr
->message
;
4283 goto panic_continue
;
4286 /* Get the maximum it can handle in one envelope, with zero meaning
4287 unlimited, which is forced for the MUA wrapper case. */
4289 address_count_max
= tp
->max_addresses
;
4290 if (address_count_max
== 0 || mua_wrapper
) address_count_max
= 999999;
4293 /************************************************************************/
4294 /***** This is slightly experimental code, but should be safe. *****/
4296 /* The address_count_max value is the maximum number of addresses that the
4297 transport can send in one envelope. However, the transport must be capable of
4298 dealing with any number of addresses. If the number it gets exceeds its
4299 envelope limitation, it must send multiple copies of the message. This can be
4300 done over a single connection for SMTP, so uses less resources than making
4301 multiple connections. On the other hand, if remote_max_parallel is greater
4302 than one, it is perhaps a good idea to use parallel processing to move the
4303 message faster, even if that results in multiple simultaneous connections to
4306 How can we come to some compromise between these two ideals? What we do is to
4307 limit the number of addresses passed to a single instance of a transport to
4308 the greater of (a) its address limit (rcpt_max for SMTP) and (b) the total
4309 number of addresses routed to remote transports divided by
4310 remote_max_parallel. For example, if the message has 100 remote recipients,
4311 remote max parallel is 2, and rcpt_max is 10, we'd never send more than 50 at
4312 once. But if rcpt_max is 100, we could send up to 100.
4314 Of course, not all the remotely addresses in a message are going to go to the
4315 same set of hosts (except in smarthost configurations), so this is just a
4316 heuristic way of dividing up the work.
4318 Furthermore (1), because this may not be wanted in some cases, and also to
4319 cope with really pathological cases, there is also a limit to the number of
4320 messages that are sent over one connection. This is the same limit that is
4321 used when sending several different messages over the same connection.
4322 Continue_sequence is set when in this situation, to the number sent so
4323 far, including this message.
4325 Furthermore (2), when somebody explicitly sets the maximum value to 1, it
4326 is probably because they are using VERP, in which case they want to pass only
4327 one address at a time to the transport, in order to be able to use
4328 $local_part and $domain in constructing a new return path. We could test for
4329 the use of these variables, but as it is so likely they will be used when the
4330 maximum is 1, we don't bother. Just leave the value alone. */
4332 if ( address_count_max
!= 1
4333 && address_count_max
< remote_delivery_count
/remote_max_parallel
4336 int new_max
= remote_delivery_count
/remote_max_parallel
;
4337 int message_max
= tp
->connection_max_messages
;
4338 if (connection_max_messages
>= 0) message_max
= connection_max_messages
;
4339 message_max
-= continue_sequence
- 1;
4340 if (message_max
> 0 && new_max
> address_count_max
* message_max
)
4341 new_max
= address_count_max
* message_max
;
4342 address_count_max
= new_max
;
4345 /************************************************************************/
4348 /* Pick off all addresses which have the same transport, errors address,
4349 destination, and extra headers. In some cases they point to the same host
4350 list, but we also need to check for identical host lists generated from
4351 entirely different domains. The host list pointers can be NULL in the case
4352 where the hosts are defined in the transport. There is also a configured
4353 maximum limit of addresses that can be handled at once (see comments above
4354 for how it is computed).
4355 If the transport does not handle multiple domains, enforce that also,
4356 and if it might need a per-address check for this, re-evaluate it.
4359 while ((next
= *anchor
) && address_count
< address_count_max
)
4362 if ( (multi_domain
|| Ustrcmp(next
->domain
, addr
->domain
) == 0)
4363 && tp
== next
->transport
4364 && same_hosts(next
->host_list
, addr
->host_list
)
4365 && same_strings(next
->prop
.errors_address
, addr
->prop
.errors_address
)
4366 && same_headers(next
->prop
.extra_headers
, addr
->prop
.extra_headers
)
4367 && same_ugid(tp
, next
, addr
)
4368 && ( next
->prop
.remove_headers
== addr
->prop
.remove_headers
4369 || ( next
->prop
.remove_headers
4370 && addr
->prop
.remove_headers
4371 && Ustrcmp(next
->prop
.remove_headers
, addr
->prop
.remove_headers
) == 0
4375 (void)(!tp
->expand_multi_domain
|| ((void)deliver_set_expansions(next
), 1)),
4377 US
"transport", next
->transport
->name
, D_transport
,
4378 US
"multi_domain", next
->transport
->multi_domain
,
4379 next
->transport
->expand_multi_domain
, &md
) == OK
4384 *anchor
= next
->next
;
4386 next
->first
= addr
; /* remember top one (for retry processing) */
4391 else anchor
= &(next
->next
);
4392 deliver_set_expansions(NULL
);
4395 /* If we are acting as an MUA wrapper, all addresses must go in a single
4396 transaction. If not, put them back on the chain and yield FALSE. */
4398 if (mua_wrapper
&& addr_remote
)
4400 last
->next
= addr_remote
;
4405 /* If the transport is limited for parallellism, enforce that here.
4406 The hints DB entry is decremented in par_reduce(), when we reap the
4407 transport process. */
4409 if (tpt_parallel_check(tp
, addr
, &serialize_key
))
4410 if ((panicmsg
= expand_string_message
))
4411 goto panic_continue
;
4413 continue; /* Loop for the next set of addresses. */
4415 /* Set up the expansion variables for this set of addresses */
4417 deliver_set_expansions(addr
);
4419 /* Ensure any transport-set auth info is fresh */
4420 addr
->authenticator
= addr
->auth_id
= addr
->auth_sndr
= NULL
;
4422 /* Compute the return path, expanding a new one if required. The old one
4423 must be set first, as it might be referred to in the expansion. */
4425 if(addr
->prop
.errors_address
)
4426 return_path
= addr
->prop
.errors_address
;
4427 #ifdef EXPERIMENTAL_SRS
4428 else if(addr
->prop
.srs_sender
)
4429 return_path
= addr
->prop
.srs_sender
;
4432 return_path
= sender_address
;
4434 if (tp
->return_path
)
4436 uschar
*new_return_path
= expand_string(tp
->return_path
);
4437 if (new_return_path
)
4438 return_path
= new_return_path
;
4439 else if (!f
.expand_string_forcedfail
)
4441 panicmsg
= string_sprintf("Failed to expand return path \"%s\": %s",
4442 tp
->return_path
, expand_string_message
);
4447 /* Find the uid, gid, and use_initgroups setting for this transport. Failure
4448 logs and sets up error messages, so we just post-process and continue with
4449 the next address. */
4451 if (!findugid(addr
, tp
, &uid
, &gid
, &use_initgroups
))
4457 /* If this transport has a setup function, call it now so that it gets
4458 run in this process and not in any subprocess. That way, the results of
4459 any setup that are retained by the transport can be reusable. One of the
4460 things the setup does is to set the fallback host lists in the addresses.
4461 That is why it is called at this point, before the continue delivery
4462 processing, because that might use the fallback hosts. */
4465 (void)((tp
->setup
)(addr
->transport
, addr
, NULL
, uid
, gid
, NULL
));
4467 /* If we have a connection still open from a verify stage (lazy-close)
4468 treat it as if it is a continued connection (apart from the counter used
4469 for the log line mark). */
4471 if (cutthrough
.cctx
.sock
>= 0 && cutthrough
.callout_hold_only
)
4474 debug_printf("lazy-callout-close: have conn still open from verification\n");
4475 continue_transport
= cutthrough
.transport
;
4476 continue_hostname
= string_copy(cutthrough
.host
.name
);
4477 continue_host_address
= string_copy(cutthrough
.host
.address
);
4478 continue_sequence
= 1;
4479 sending_ip_address
= cutthrough
.snd_ip
;
4480 sending_port
= cutthrough
.snd_port
;
4481 smtp_peer_options
= cutthrough
.peer_options
;
4484 /* If this is a run to continue delivery down an already-established
4485 channel, check that this set of addresses matches the transport and
4486 the channel. If it does not, defer the addresses. If a host list exists,
4487 we must check that the continue host is on the list. Otherwise, the
4488 host is set in the transport. */
4490 f
.continue_more
= FALSE
; /* In case got set for the last lot */
4491 if (continue_transport
)
4493 BOOL ok
= Ustrcmp(continue_transport
, tp
->name
) == 0;
4495 /* If the transport is about to override the host list do not check
4496 it here but take the cost of running the transport process to discover
4497 if the continued_hostname connection is suitable. This is a layering
4498 violation which is unfortunate as it requires we haul in the smtp
4503 smtp_transport_options_block
* ob
;
4505 if ( !( Ustrcmp(tp
->info
->driver_name
, "smtp") == 0
4506 && (ob
= (smtp_transport_options_block
*)tp
->options_block
)
4507 && ob
->hosts_override
&& ob
->hosts
4513 for (host_item
* h
= addr
->host_list
; h
; h
= h
->next
)
4514 if (Ustrcmp(h
->name
, continue_hostname
) == 0)
4515 /*XXX should also check port here */
4516 { ok
= TRUE
; break; }
4520 /* Addresses not suitable; defer or queue for fallback hosts (which
4521 might be the continue host) and skip to next address. */
4525 DEBUG(D_deliver
) debug_printf("not suitable for continue_transport (%s)\n",
4526 Ustrcmp(continue_transport
, tp
->name
) != 0
4527 ? string_sprintf("tpt %s vs %s", continue_transport
, tp
->name
)
4528 : string_sprintf("no host matching %s", continue_hostname
));
4529 if (serialize_key
) enq_end(serialize_key
);
4531 if (addr
->fallback_hosts
&& !fallback
)
4533 for (next
= addr
; ; next
= next
->next
)
4535 next
->host_list
= next
->fallback_hosts
;
4536 DEBUG(D_deliver
) debug_printf("%s queued for fallback host(s)\n", next
->address
);
4537 if (!next
->next
) break;
4539 next
->next
= addr_fallback
;
4540 addr_fallback
= addr
;
4545 for (next
= addr
; ; next
= next
->next
)
4547 DEBUG(D_deliver
) debug_printf(" %s to def list\n", next
->address
);
4548 if (!next
->next
) break;
4550 next
->next
= addr_defer
;
4557 /* Set a flag indicating whether there are further addresses that list
4558 the continued host. This tells the transport to leave the channel open,
4559 but not to pass it to another delivery process. We'd like to do that
4560 for non-continue_transport cases too but the knowlege of which host is
4561 connected to is too hard to manage. Perhaps we need a finer-grain
4562 interface to the transport. */
4564 for (next
= addr_remote
; next
&& !f
.continue_more
; next
= next
->next
)
4565 for (host_item
* h
= next
->host_list
; h
; h
= h
->next
)
4566 if (Ustrcmp(h
->name
, continue_hostname
) == 0)
4567 { f
.continue_more
= TRUE
; break; }
4570 /* The transports set up the process info themselves as they may connect
4571 to more than one remote machine. They also have to set up the filter
4572 arguments, if required, so that the host name and address are available
4575 transport_filter_argv
= NULL
;
4577 /* Create the pipe for inter-process communication. If pipe creation
4578 fails, it is probably because the value of remote_max_parallel is so
4579 large that too many file descriptors for pipes have been created. Arrange
4580 to wait for a process to finish, and then try again. If we still can't
4581 create a pipe when all processes have finished, break the retry loop. */
4585 if (pipe(pfd
) == 0) pipe_done
= TRUE
;
4586 else if (parcount
> 0) parmax
= parcount
;
4589 /* We need to make the reading end of the pipe non-blocking. There are
4590 two different options for this. Exim is cunningly (I hope!) coded so
4591 that it can use either of them, though it prefers O_NONBLOCK, which
4592 distinguishes between EOF and no-more-data. */
4594 /* The data appears in a timely manner and we already did a select on
4595 all pipes, so I do not see a reason to use non-blocking IO here
4598 (void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK);
4600 (void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY);
4604 /* If the maximum number of subprocesses already exist, wait for a process
4605 to finish. If we ran out of file descriptors, parmax will have been reduced
4606 from its initial value of remote_max_parallel. */
4608 par_reduce(parmax
- 1, fallback
);
4611 /* If we failed to create a pipe and there were no processes to wait
4612 for, we have to give up on this one. Do this outside the above loop
4613 so that we can continue the main loop. */
4617 panicmsg
= string_sprintf("unable to create pipe: %s", strerror(errno
));
4621 /* Find a free slot in the pardata list. Must do this after the possible
4622 waiting for processes to finish, because a terminating process will free
4625 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
4626 if (parlist
[poffset
].pid
== 0)
4629 /* If there isn't one, there has been a horrible disaster. */
4631 if (poffset
>= remote_max_parallel
)
4633 (void)close(pfd
[pipe_write
]);
4634 (void)close(pfd
[pipe_read
]);
4635 panicmsg
= US
"Unexpectedly no free subprocess slot";
4639 /* Now fork a subprocess to do the remote delivery, but before doing so,
4640 ensure that any cached resources are released so as not to interfere with
4641 what happens in the subprocess. */
4645 DEBUG(D_deliver
) debug_printf("forking transport process\n");
4646 if ((pid
= fork()) == 0)
4648 int fd
= pfd
[pipe_write
];
4651 /* Setting this global in the subprocess means we need never clear it */
4652 transport_name
= tp
->name
;
4654 /* There are weird circumstances in which logging is disabled */
4655 f
.disable_logging
= tp
->disable_logging
;
4657 /* Show pids on debug output if parallelism possible */
4659 if (parmax
> 1 && (parcount
> 0 || addr_remote
))
4661 DEBUG(D_any
|D_v
) debug_selector
|= D_pid
;
4662 DEBUG(D_deliver
) debug_printf("Remote delivery process started\n");
4665 /* Reset the random number generator, so different processes don't all
4666 have the same sequence. In the test harness we want different, but
4667 predictable settings for each delivery process, so do something explicit
4668 here rather they rely on the fixed reset in the random number function. */
4670 random_seed
= f
.running_in_test_harness
? 42 + 2*delivery_count
: 0;
4672 /* Set close-on-exec on the pipe so that it doesn't get passed on to
4673 a new process that may be forked to do another delivery down the same
4676 (void)fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
);
4678 /* Close open file descriptors for the pipes of other processes
4679 that are running in parallel. */
4681 for (poffset
= 0; poffset
< remote_max_parallel
; poffset
++)
4682 if (parlist
[poffset
].pid
!= 0) (void)close(parlist
[poffset
].fd
);
4684 /* This process has inherited a copy of the file descriptor
4685 for the data file, but its file pointer is shared with all the
4686 other processes running in parallel. Therefore, we have to re-open
4687 the file in order to get a new file descriptor with its own
4688 file pointer. We don't need to lock it, as the lock is held by
4689 the parent process. There doesn't seem to be any way of doing
4690 a dup-with-new-file-pointer. */
4692 (void)close(deliver_datafile
);
4694 uschar
* fname
= spool_fname(US
"input", message_subdir
, message_id
, US
"-D");
4696 if ((deliver_datafile
= Uopen(fname
,
4700 O_RDWR
| O_APPEND
, 0)) < 0)
4701 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Failed to reopen %s for remote "
4702 "parallel delivery: %s", fname
, strerror(errno
));
4705 /* Set the close-on-exec flag */
4707 (void)fcntl(deliver_datafile
, F_SETFD
, fcntl(deliver_datafile
, F_GETFD
) |
4711 /* Set the uid/gid of this process; bombs out on failure. */
4713 exim_setugid(uid
, gid
, use_initgroups
,
4714 string_sprintf("remote delivery to %s with transport=%s",
4715 addr
->address
, tp
->name
));
4717 /* Close the unwanted half of this process' pipe, set the process state,
4718 and run the transport. Afterwards, transport_count will contain the number
4719 of bytes written. */
4721 (void)close(pfd
[pipe_read
]);
4722 set_process_info("delivering %s using %s", message_id
, tp
->name
);
4723 debug_print_string(tp
->debug_string
);
4724 if (!(tp
->info
->code
)(addr
->transport
, addr
)) replicate_status(addr
);
4726 set_process_info("delivering %s (just run %s for %s%s in subprocess)",
4727 message_id
, tp
->name
, addr
->address
, addr
->next
? ", ..." : "");
4729 /* Ensure any cached resources that we used are now released */
4733 /* Pass the result back down the pipe. This is a lot more information
4734 than is needed for a local delivery. We have to send back the error
4735 status for each address, the usability status for each host that is
4736 flagged as unusable, and all the retry items. When TLS is in use, we
4737 send also the cipher and peerdn information. Each type of information
4738 is flagged by an identifying byte, and is then in a fixed format (with
4739 strings terminated by zeros), and there is a final terminator at the
4740 end. The host information and retry information is all attached to
4741 the first address, so that gets sent at the start. */
4743 /* Host unusability information: for most success cases this will
4746 for (h
= addr
->host_list
; h
; h
= h
->next
)
4748 if (!h
->address
|| h
->status
< hstatus_unusable
) continue;
4749 sprintf(CS big_buffer
, "%c%c%s", h
->status
, h
->why
, h
->address
);
4750 rmt_dlv_checked_write(fd
, 'H', '0', big_buffer
, Ustrlen(big_buffer
+2) + 3);
4753 /* The number of bytes written. This is the same for each address. Even
4754 if we sent several copies of the message down the same connection, the
4755 size of each one is the same, and it's that value we have got because
4756 transport_count gets reset before calling transport_write_message(). */
4758 memcpy(big_buffer
, &transport_count
, sizeof(transport_count
));
4759 rmt_dlv_checked_write(fd
, 'S', '0', big_buffer
, sizeof(transport_count
));
4761 /* Information about what happened to each address. Four item types are
4762 used: an optional 'X' item first, for TLS information, then an optional "C"
4763 item for any client-auth info followed by 'R' items for any retry settings,
4764 and finally an 'A' item for the remaining data. */
4766 for(; addr
; addr
= addr
->next
)
4770 /* The certificate verification status goes into the flags */
4771 if (tls_out
.certificate_verified
) setflag(addr
, af_cert_verified
);
4773 if (tls_out
.dane_verified
) setflag(addr
, af_dane_verified
);
4775 # ifdef EXPERIMENTAL_TLS_RESUME
4776 if (tls_out
.resumption
& RESUME_USED
) setflag(addr
, af_tls_resume
);
4779 /* Use an X item only if there's something to send */
4783 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%.128s", addr
->cipher
) + 1;
4787 ptr
+= sprintf(CS ptr
, "%.512s", addr
->peerdn
) + 1;
4789 rmt_dlv_checked_write(fd
, 'X', '1', big_buffer
, ptr
- big_buffer
);
4791 else if (continue_proxy_cipher
)
4793 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%.128s", continue_proxy_cipher
) + 1;
4795 rmt_dlv_checked_write(fd
, 'X', '1', big_buffer
, ptr
- big_buffer
);
4801 if (tls_export_cert(ptr
, big_buffer_size
-2, addr
->peercert
))
4805 rmt_dlv_checked_write(fd
, 'X', '2', big_buffer
, ptr
- big_buffer
);
4810 if (tls_export_cert(ptr
, big_buffer_size
-2, addr
->ourcert
))
4814 rmt_dlv_checked_write(fd
, 'X', '3', big_buffer
, ptr
- big_buffer
);
4816 # ifndef DISABLE_OCSP
4817 if (addr
->ocsp
> OCSP_NOT_REQ
)
4819 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%c", addr
->ocsp
+ '0') + 1;
4820 rmt_dlv_checked_write(fd
, 'X', '4', big_buffer
, ptr
- big_buffer
);
4823 #endif /*DISABLE_TLS*/
4825 if (client_authenticator
)
4827 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%.64s", client_authenticator
) + 1;
4828 rmt_dlv_checked_write(fd
, 'C', '1', big_buffer
, ptr
- big_buffer
);
4830 if (client_authenticated_id
)
4832 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%.64s", client_authenticated_id
) + 1;
4833 rmt_dlv_checked_write(fd
, 'C', '2', big_buffer
, ptr
- big_buffer
);
4835 if (client_authenticated_sender
)
4837 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%.64s", client_authenticated_sender
) + 1;
4838 rmt_dlv_checked_write(fd
, 'C', '3', big_buffer
, ptr
- big_buffer
);
4841 #ifndef DISABLE_PRDR
4842 if (testflag(addr
, af_prdr_used
))
4843 rmt_dlv_checked_write(fd
, 'P', '0', NULL
, 0);
4846 if (testflag(addr
, af_pipelining
))
4847 #ifndef DISABLE_PIPE_CONNECT
4848 if (testflag(addr
, af_early_pipe
))
4849 rmt_dlv_checked_write(fd
, 'L', '2', NULL
, 0);
4852 rmt_dlv_checked_write(fd
, 'L', '1', NULL
, 0);
4854 if (testflag(addr
, af_chunking_used
))
4855 rmt_dlv_checked_write(fd
, 'K', '0', NULL
, 0);
4857 if (testflag(addr
, af_tcp_fastopen_conn
))
4858 rmt_dlv_checked_write(fd
, 'T',
4859 testflag(addr
, af_tcp_fastopen
) ? testflag(addr
, af_tcp_fastopen_data
)
4863 memcpy(big_buffer
, &addr
->dsn_aware
, sizeof(addr
->dsn_aware
));
4864 rmt_dlv_checked_write(fd
, 'D', '0', big_buffer
, sizeof(addr
->dsn_aware
));
4866 /* Retry information: for most success cases this will be null. */
4868 for (retry_item
* r
= addr
->retries
; r
; r
= r
->next
)
4870 sprintf(CS big_buffer
, "%c%.500s", r
->flags
, r
->key
);
4871 ptr
= big_buffer
+ Ustrlen(big_buffer
+2) + 3;
4872 memcpy(ptr
, &r
->basic_errno
, sizeof(r
->basic_errno
));
4873 ptr
+= sizeof(r
->basic_errno
);
4874 memcpy(ptr
, &r
->more_errno
, sizeof(r
->more_errno
));
4875 ptr
+= sizeof(r
->more_errno
);
4876 if (!r
->message
) *ptr
++ = 0; else
4878 sprintf(CS ptr
, "%.512s", r
->message
);
4881 rmt_dlv_checked_write(fd
, 'R', '0', big_buffer
, ptr
- big_buffer
);
4884 #ifdef SUPPORT_SOCKS
4885 if (LOGGING(proxy
) && proxy_session
)
4888 if (proxy_local_address
)
4890 DEBUG(D_deliver
) debug_printf("proxy_local_address '%s'\n", proxy_local_address
);
4891 ptr
= big_buffer
+ sprintf(CS ptr
, "%.128s", proxy_local_address
) + 1;
4892 DEBUG(D_deliver
) debug_printf("proxy_local_port %d\n", proxy_local_port
);
4893 memcpy(ptr
, &proxy_local_port
, sizeof(proxy_local_port
));
4894 ptr
+= sizeof(proxy_local_port
);
4898 rmt_dlv_checked_write(fd
, 'A', '2', big_buffer
, ptr
- big_buffer
);
4902 #ifdef EXPERIMENTAL_DSN_INFO
4903 /*um, are they really per-addr? Other per-conn stuff is not (auth, tls). But host_used is! */
4904 if (addr
->smtp_greeting
)
4906 DEBUG(D_deliver
) debug_printf("smtp_greeting '%s'\n", addr
->smtp_greeting
);
4907 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%.128s", addr
->smtp_greeting
) + 1;
4908 if (addr
->helo_response
)
4910 DEBUG(D_deliver
) debug_printf("helo_response '%s'\n", addr
->helo_response
);
4911 ptr
+= sprintf(CS ptr
, "%.128s", addr
->helo_response
) + 1;
4915 rmt_dlv_checked_write(fd
, 'A', '1', big_buffer
, ptr
- big_buffer
);
4919 /* The rest of the information goes in an 'A0' item. */
4921 sprintf(CS big_buffer
, "%c%c", addr
->transport_return
, addr
->special_action
);
4922 ptr
= big_buffer
+ 2;
4923 memcpy(ptr
, &addr
->basic_errno
, sizeof(addr
->basic_errno
));
4924 ptr
+= sizeof(addr
->basic_errno
);
4925 memcpy(ptr
, &addr
->more_errno
, sizeof(addr
->more_errno
));
4926 ptr
+= sizeof(addr
->more_errno
);
4927 memcpy(ptr
, &addr
->delivery_time
, sizeof(addr
->delivery_time
));
4928 ptr
+= sizeof(addr
->delivery_time
);
4929 memcpy(ptr
, &addr
->flags
, sizeof(addr
->flags
));
4930 ptr
+= sizeof(addr
->flags
);
4932 if (!addr
->message
) *ptr
++ = 0; else
4933 ptr
+= sprintf(CS ptr
, "%.1024s", addr
->message
) + 1;
4935 if (!addr
->user_message
) *ptr
++ = 0; else
4936 ptr
+= sprintf(CS ptr
, "%.1024s", addr
->user_message
) + 1;
4938 if (!addr
->host_used
) *ptr
++ = 0; else
4940 ptr
+= sprintf(CS ptr
, "%.256s", addr
->host_used
->name
) + 1;
4941 ptr
+= sprintf(CS ptr
, "%.64s", addr
->host_used
->address
) + 1;
4942 memcpy(ptr
, &addr
->host_used
->port
, sizeof(addr
->host_used
->port
));
4943 ptr
+= sizeof(addr
->host_used
->port
);
4945 /* DNS lookup status */
4946 *ptr
++ = addr
->host_used
->dnssec
==DS_YES
? '2'
4947 : addr
->host_used
->dnssec
==DS_NO
? '1' : '0';
4950 rmt_dlv_checked_write(fd
, 'A', '0', big_buffer
, ptr
- big_buffer
);
4953 /* Local interface address/port */
4954 #ifdef EXPERIMENTAL_DSN_INFO
4955 if (sending_ip_address
)
4957 if (LOGGING(incoming_interface
) && sending_ip_address
)
4961 ptr
= big_buffer
+ sprintf(CS big_buffer
, "%.128s", sending_ip_address
) + 1;
4962 ptr
+= sprintf(CS ptr
, "%d", sending_port
) + 1;
4963 rmt_dlv_checked_write(fd
, 'I', '0', big_buffer
, ptr
- big_buffer
);
4966 /* Add termination flag, close the pipe, and that's it. The character
4967 after 'Z' indicates whether continue_transport is now NULL or not.
4968 A change from non-NULL to NULL indicates a problem with a continuing
4971 big_buffer
[0] = continue_transport
? '1' : '0';
4972 rmt_dlv_checked_write(fd
, 'Z', '0', big_buffer
, 1);
4976 DEBUG(D_deliver
) debug_printf("forked transport process (%d)\n", pid
);
4978 /* Back in the mainline: close the unwanted half of the pipe. */
4980 (void)close(pfd
[pipe_write
]);
4982 /* If we have a connection still open from a verify stage (lazy-close)
4983 release its TLS library context (if any) as responsibility was passed to
4984 the delivery child process. */
4986 if (cutthrough
.cctx
.sock
>= 0 && cutthrough
.callout_hold_only
)
4989 if (cutthrough
.is_tls
)
4990 tls_close(cutthrough
.cctx
.tls_ctx
, TLS_NO_SHUTDOWN
);
4992 (void) close(cutthrough
.cctx
.sock
);
4993 release_cutthrough_connection(US
"passed to transport proc");
4996 /* Fork failed; defer with error message */
5000 (void)close(pfd
[pipe_read
]);
5001 panicmsg
= string_sprintf("fork failed for remote delivery to %s: %s",
5002 addr
->domain
, strerror(errno
));
5006 /* Fork succeeded; increment the count, and remember relevant data for
5007 when the process finishes. */
5010 parlist
[poffset
].addrlist
= parlist
[poffset
].addr
= addr
;
5011 parlist
[poffset
].pid
= pid
;
5012 parlist
[poffset
].fd
= pfd
[pipe_read
];
5013 parlist
[poffset
].done
= FALSE
;
5014 parlist
[poffset
].msg
= NULL
;
5015 parlist
[poffset
].return_path
= return_path
;
5017 /* If the process we've just started is sending a message down an existing
5018 channel, wait for it now. This ensures that only one such process runs at
5019 once, whatever the value of remote_max parallel. Otherwise, we might try to
5020 send two or more messages simultaneously down the same channel. This could
5021 happen if there are different domains that include the same host in otherwise
5022 different host lists.
5024 Also, if the transport closes down the channel, this information gets back
5025 (continue_transport gets set to NULL) before we consider any other addresses
5028 if (continue_transport
) par_reduce(0, fallback
);
5030 /* Otherwise, if we are running in the test harness, wait a bit, to let the
5031 newly created process get going before we create another process. This should
5032 ensure repeatability in the tests. Wait long enough for most cases to complete
5035 else testharness_pause_ms(600);
5040 if (serialize_key
) enq_end(serialize_key
);
5042 remote_post_process(addr
, LOG_MAIN
|LOG_PANIC
, panicmsg
, fallback
);
5046 /* Reached the end of the list of addresses. Wait for all the subprocesses that
5047 are still running and post-process their addresses. */
5049 par_reduce(0, fallback
);
5056 /*************************************************
5057 * Split an address into local part and domain *
5058 *************************************************/
5060 /* This function initializes an address for routing by splitting it up into a
5061 local part and a domain. The local part is set up twice - once in its original
5062 casing, and once in lower case, and it is dequoted. We also do the "percent
5063 hack" for configured domains. This may lead to a DEFER result if a lookup
5064 defers. When a percent-hacking takes place, we insert a copy of the original
5065 address as a new parent of this address, as if we have had a redirection.
5068 addr points to an addr_item block containing the address
5071 DEFER - could not determine if domain is %-hackable
5075 deliver_split_address(address_item
* addr
)
5077 uschar
* address
= addr
->address
;
5082 if (!(domain
= Ustrrchr(address
, '@')))
5083 return DEFER
; /* should always have a domain, but just in case... */
5085 len
= domain
- address
;
5086 addr
->domain
= string_copylc(domain
+1); /* Domains are always caseless */
5088 /* The implication in the RFCs (though I can't say I've seen it spelled out
5089 explicitly) is that quoting should be removed from local parts at the point
5090 where they are locally interpreted. [The new draft "821" is more explicit on
5091 this, Jan 1999.] We know the syntax is valid, so this can be done by simply
5092 removing quoting backslashes and any unquoted doublequotes. */
5094 t
= addr
->cc_local_part
= store_get(len
+1, is_tainted(address
));
5098 if (c
== '\"') continue;
5108 /* We do the percent hack only for those domains that are listed in
5109 percent_hack_domains. A loop is required, to copy with multiple %-hacks. */
5111 if (percent_hack_domains
)
5114 uschar
*new_address
= NULL
;
5115 uschar
*local_part
= addr
->cc_local_part
;
5117 deliver_domain
= addr
->domain
; /* set $domain */
5119 while ( (rc
= match_isinlist(deliver_domain
, (const uschar
**)&percent_hack_domains
, 0,
5120 &domainlist_anchor
, addr
->domain_cache
, MCL_DOMAIN
, TRUE
, NULL
))
5122 && (t
= Ustrrchr(local_part
, '%')) != NULL
5125 new_address
= string_copy(local_part
);
5126 new_address
[t
- local_part
] = '@';
5127 deliver_domain
= string_copylc(t
+1);
5128 local_part
= string_copyn(local_part
, t
- local_part
);
5131 if (rc
== DEFER
) return DEFER
; /* lookup deferred */
5133 /* If hackery happened, set up new parent and alter the current address. */
5137 address_item
*new_parent
= store_get(sizeof(address_item
), FALSE
);
5138 *new_parent
= *addr
;
5139 addr
->parent
= new_parent
;
5140 new_parent
->child_count
= 1;
5141 addr
->address
= new_address
;
5142 addr
->unique
= string_copy(new_address
);
5143 addr
->domain
= deliver_domain
;
5144 addr
->cc_local_part
= local_part
;
5145 DEBUG(D_deliver
) debug_printf("%%-hack changed address to: %s\n",
5150 /* Create the lowercased version of the final local part, and make that the
5151 default one to be used. */
5153 addr
->local_part
= addr
->lc_local_part
= string_copylc(addr
->cc_local_part
);
5160 /*************************************************
5161 * Get next error message text *
5162 *************************************************/
5164 /* If f is not NULL, read the next "paragraph", from a customized error message
5165 text file, terminated by a line containing ****, and expand it.
5168 f NULL or a file to read from
5169 which string indicating which string (for errors)
5171 Returns: NULL or an expanded string
5175 next_emf(FILE *f
, uschar
*which
)
5181 if (!f
) return NULL
;
5183 if (!Ufgets(buffer
, sizeof(buffer
), f
) || Ustrcmp(buffer
, "****\n") == 0)
5186 para
= string_get(256);
5189 para
= string_cat(para
, buffer
);
5190 if (!Ufgets(buffer
, sizeof(buffer
), f
) || Ustrcmp(buffer
, "****\n") == 0)
5193 if ((yield
= expand_string(string_from_gstring(para
))))
5196 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to expand string from "
5197 "bounce_message_file or warn_message_file (%s): %s", which
,
5198 expand_string_message
);
5205 /*************************************************
5206 * Close down a passed transport channel *
5207 *************************************************/
5209 /* This function is called when a passed transport channel cannot be used.
5210 It attempts to close it down tidily. The yield is always DELIVER_NOT_ATTEMPTED
5211 so that the function call can be the argument of a "return" statement.
5214 Returns: DELIVER_NOT_ATTEMPTED
5218 continue_closedown(void)
5220 if (continue_transport
)
5221 for (transport_instance
* t
= transports
; t
; t
= t
->next
)
5222 if (Ustrcmp(t
->name
, continue_transport
) == 0)
5224 if (t
->info
->closedown
) (t
->info
->closedown
)(t
);
5227 return DELIVER_NOT_ATTEMPTED
;
5233 /*************************************************
5234 * Print address information *
5235 *************************************************/
5237 /* This function is called to output an address, or information about an
5238 address, for bounce or defer messages. If the hide_child flag is set, all we
5239 output is the original ancestor address.
5242 addr points to the address
5243 f the FILE to print to
5244 si an initial string
5245 sc a continuation string for before "generated"
5248 Returns: TRUE if the address is not hidden
5252 print_address_information(address_item
*addr
, FILE *f
, uschar
*si
, uschar
*sc
,
5256 uschar
*printed
= US
"";
5257 address_item
*ancestor
= addr
;
5258 while (ancestor
->parent
) ancestor
= ancestor
->parent
;
5260 fprintf(f
, "%s", CS si
);
5262 if (addr
->parent
&& testflag(addr
, af_hide_child
))
5264 printed
= US
"an undisclosed address";
5267 else if (!testflag(addr
, af_pfr
) || !addr
->parent
)
5268 printed
= addr
->address
;
5272 uschar
*s
= addr
->address
;
5275 if (addr
->address
[0] == '>') { ss
= US
"mail"; s
++; }
5276 else if (addr
->address
[0] == '|') ss
= US
"pipe";
5279 fprintf(f
, "%s to %s%sgenerated by ", ss
, s
, sc
);
5280 printed
= addr
->parent
->address
;
5283 fprintf(f
, "%s", CS
string_printing(printed
));
5285 if (ancestor
!= addr
)
5287 uschar
*original
= ancestor
->onetime_parent
;
5288 if (!original
) original
= ancestor
->address
;
5289 if (strcmpic(original
, printed
) != 0)
5290 fprintf(f
, "%s(%sgenerated from %s)", sc
,
5291 ancestor
!= addr
->parent
? "ultimately " : "",
5292 string_printing(original
));
5295 if (addr
->host_used
)
5296 fprintf(f
, "\n host %s [%s]",
5297 addr
->host_used
->name
, addr
->host_used
->address
);
5299 fprintf(f
, "%s", CS se
);
5307 /*************************************************
5308 * Print error for an address *
5309 *************************************************/
5311 /* This function is called to print the error information out of an address for
5312 a bounce or a warning message. It tries to format the message reasonably by
5313 introducing newlines. All lines are indented by 4; the initial printing
5314 position must be set before calling.
5316 This function used always to print the error. Nowadays we want to restrict it
5317 to cases such as LMTP/SMTP errors from a remote host, and errors from :fail:
5318 and filter "fail". We no longer pass other information willy-nilly in bounce
5319 and warning messages. Text in user_message is always output; text in message
5320 only if the af_pass_message flag is set.
5324 f the FILE to print on
5331 print_address_error(address_item
*addr
, FILE *f
, uschar
*t
)
5333 int count
= Ustrlen(t
);
5334 uschar
*s
= testflag(addr
, af_pass_message
) ? addr
->message
: NULL
;
5336 if (!s
&& !(s
= addr
->user_message
))
5339 fprintf(f
, "\n %s", t
);
5342 if (*s
== '\\' && s
[1] == 'n')
5352 if (*s
++ == ':' && isspace(*s
) && count
> 45)
5354 fprintf(f
, "\n "); /* sic (because space follows) */
5361 /***********************************************************
5362 * Print Diagnostic-Code for an address *
5363 ************************************************************/
5365 /* This function is called to print the error information out of an address for
5366 a bounce or a warning message. It tries to format the message reasonably as
5367 required by RFC 3461 by adding a space after each newline
5369 it uses the same logic as print_address_error() above. if af_pass_message is true
5370 and addr->message is set it uses the remote host answer. if not addr->user_message
5371 is used instead if available.
5375 f the FILE to print on
5381 print_dsn_diagnostic_code(const address_item
*addr
, FILE *f
)
5383 uschar
*s
= testflag(addr
, af_pass_message
) ? addr
->message
: NULL
;
5385 /* af_pass_message and addr->message set ? print remote host answer */
5389 debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr
->message
);
5391 /* search first ": ". we assume to find the remote-MTA answer there */
5392 if (!(s
= Ustrstr(addr
->message
, ": ")))
5393 return; /* not found, bail out */
5394 s
+= 2; /* skip ": " */
5395 fprintf(f
, "Diagnostic-Code: smtp; ");
5397 /* no message available. do nothing */
5401 if (*s
== '\\' && s
[1] == 'n')
5403 fputs("\n ", f
); /* as defined in RFC 3461 */
5413 /*************************************************
5414 * Check list of addresses for duplication *
5415 *************************************************/
5417 /* This function was introduced when the test for duplicate addresses that are
5418 not pipes, files, or autoreplies was moved from the middle of routing to when
5419 routing was complete. That was to fix obscure cases when the routing history
5420 affects the subsequent routing of identical addresses. This function is called
5421 after routing, to check that the final routed addresses are not duplicates.
5423 If we detect a duplicate, we remember what it is a duplicate of. Note that
5424 pipe, file, and autoreply de-duplication is handled during routing, so we must
5425 leave such "addresses" alone here, as otherwise they will incorrectly be
5428 Argument: address of list anchor
5433 do_duplicate_check(address_item
**anchor
)
5436 while ((addr
= *anchor
))
5439 if (testflag(addr
, af_pfr
))
5441 anchor
= &(addr
->next
);
5443 else if ((tnode
= tree_search(tree_duplicates
, addr
->unique
)))
5445 DEBUG(D_deliver
|D_route
)
5446 debug_printf("%s is a duplicate address: discarded\n", addr
->unique
);
5447 *anchor
= addr
->next
;
5448 addr
->dupof
= tnode
->data
.ptr
;
5449 addr
->next
= addr_duplicate
;
5450 addr_duplicate
= addr
;
5454 tree_add_duplicate(addr
->unique
, addr
);
5455 anchor
= &(addr
->next
);
5463 /************************************************/
5466 print_dsn_addr_action(FILE * f
, address_item
* addr
,
5467 uschar
* action
, uschar
* status
)
5471 if (addr
->dsn_orcpt
)
5472 fprintf(f
,"Original-Recipient: %s\n", addr
->dsn_orcpt
);
5474 for (pa
= addr
; pa
->parent
; ) pa
= pa
->parent
;
5475 fprintf(f
, "Action: %s\n"
5476 "Final-Recipient: rfc822;%s\n"
5478 action
, pa
->address
, status
);
5483 /* When running in the test harness, there's an option that allows us to
5484 fudge this time so as to get repeatability of the tests. Take the first
5485 time off the list. In queue runs, the list pointer gets updated in the
5489 test_harness_fudged_queue_time(int actual_time
)
5492 if ( f
.running_in_test_harness
&& *fudged_queue_times
5493 && (qt
= readconf_readtime(fudged_queue_times
, '/', FALSE
)) >= 0)
5495 DEBUG(D_deliver
) debug_printf("fudged queue_times = %s\n",
5496 fudged_queue_times
);
5502 /*************************************************
5503 * Deliver one message *
5504 *************************************************/
5506 /* This is the function which is called when a message is to be delivered. It
5507 is passed the id of the message. It is possible that the message no longer
5508 exists, if some other process has delivered it, and it is also possible that
5509 the message is being worked on by another process, in which case the data file
5512 If no delivery is attempted for any of the above reasons, the function returns
5513 DELIVER_NOT_ATTEMPTED.
5515 If the give_up flag is set true, do not attempt any deliveries, but instead
5516 fail all outstanding addresses and return the message to the sender (or
5519 A delivery operation has a process all to itself; we never deliver more than
5520 one message in the same process. Therefore we needn't worry too much about
5523 Liable to be called as root.
5526 id the id of the message to be delivered
5527 forced TRUE if delivery was forced by an administrator; this overrides
5528 retry delays and causes a delivery to be tried regardless
5529 give_up TRUE if an administrator has requested that delivery attempts
5532 Returns: When the global variable mua_wrapper is FALSE:
5533 DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made
5534 DELIVER_NOT_ATTEMPTED otherwise (see comment above)
5535 When the global variable mua_wrapper is TRUE:
5536 DELIVER_MUA_SUCCEEDED if delivery succeeded
5537 DELIVER_MUA_FAILED if delivery failed
5538 DELIVER_NOT_ATTEMPTED if not attempted (should not occur)
5542 deliver_message(uschar
*id
, BOOL forced
, BOOL give_up
)
5545 int final_yield
= DELIVER_ATTEMPTED_NORMAL
;
5546 time_t now
= time(NULL
);
5547 address_item
*addr_last
= NULL
;
5548 uschar
*filter_message
= NULL
;
5549 int process_recipients
= RECIP_ACCEPT
;
5552 extern int acl_where
;
5555 #ifdef MEASURE_TIMING
5556 report_time_since(×tamp_startup
, US
"delivery start"); /* testcase 0022, 2100 */
5559 info
= queue_run_pid
== (pid_t
)0
5560 ? string_sprintf("delivering %s", id
)
5561 : string_sprintf("delivering %s (queue run pid %d)", id
, queue_run_pid
);
5563 /* If the D_process_info bit is on, set_process_info() will output debugging
5564 information. If not, we want to show this initial information if D_deliver or
5565 D_queue_run is set or in verbose mode. */
5567 set_process_info("%s", info
);
5569 if ( !(debug_selector
& D_process_info
)
5570 && (debug_selector
& (D_deliver
|D_queue_run
|D_v
))
5572 debug_printf("%s\n", info
);
5574 /* Ensure that we catch any subprocesses that are created. Although Exim
5575 sets SIG_DFL as its initial default, some routes through the code end up
5576 here with it set to SIG_IGN - cases where a non-synchronous delivery process
5577 has been forked, but no re-exec has been done. We use sigaction rather than
5578 plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be
5579 sure it is turned off. (There was a problem on AIX with this.) */
5583 struct sigaction act
;
5584 act
.sa_handler
= SIG_DFL
;
5585 sigemptyset(&(act
.sa_mask
));
5587 sigaction(SIGCHLD
, &act
, NULL
);
5590 signal(SIGCHLD
, SIG_DFL
);
5593 /* Make the forcing flag available for routers and transports, set up the
5594 global message id field, and initialize the count for returned files and the
5595 message size. This use of strcpy() is OK because the length id is checked when
5596 it is obtained from a command line (the -M or -q options), and otherwise it is
5597 known to be a valid message id. */
5599 if (id
!= message_id
)
5600 Ustrcpy(message_id
, id
);
5601 f
.deliver_force
= forced
;
5605 /* Initialize some flags */
5607 update_spool
= FALSE
;
5608 remove_journal
= TRUE
;
5610 /* Set a known context for any ACLs we call via expansions */
5611 acl_where
= ACL_WHERE_DELIVERY
;
5613 /* Reset the random number generator, so that if several delivery processes are
5614 started from a queue runner that has already used random numbers (for sorting),
5615 they don't all get the same sequence. */
5619 /* Open and lock the message's data file. Exim locks on this one because the
5620 header file may get replaced as it is re-written during the delivery process.
5621 Any failures cause messages to be written to the log, except for missing files
5622 while queue running - another process probably completed delivery. As part of
5623 opening the data file, message_subdir gets set. */
5625 if ((deliver_datafile
= spool_open_datafile(id
)) < 0)
5626 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5628 /* The value of message_size at this point has been set to the data length,
5629 plus one for the blank line that notionally precedes the data. */
5631 /* Now read the contents of the header file, which will set up the headers in
5632 store, and also the list of recipients and the tree of non-recipients and
5633 assorted flags. It updates message_size. If there is a reading or format error,
5634 give up; if the message has been around for sufficiently long, remove it. */
5637 uschar
* spoolname
= string_sprintf("%s-H", id
);
5638 if ((rc
= spool_read_header(spoolname
, TRUE
, TRUE
)) != spool_read_OK
)
5640 if (errno
== ERRNO_SPOOLFORMAT
)
5642 struct stat statbuf
;
5643 if (Ustat(spool_fname(US
"input", message_subdir
, spoolname
, US
""),
5645 log_write(0, LOG_MAIN
, "Format error in spool file %s: "
5646 "size=" OFF_T_FMT
, spoolname
, statbuf
.st_size
);
5648 log_write(0, LOG_MAIN
, "Format error in spool file %s", spoolname
);
5651 log_write(0, LOG_MAIN
, "Error reading spool file %s: %s", spoolname
,
5654 /* If we managed to read the envelope data, received_time contains the
5655 time the message was received. Otherwise, we can calculate it from the
5658 if (rc
!= spool_read_hdrerror
)
5660 received_time
.tv_sec
= received_time
.tv_usec
= 0;
5661 /*XXX subsec precision?*/
5662 for (i
= 0; i
< 6; i
++)
5663 received_time
.tv_sec
= received_time
.tv_sec
* BASE_62
+ tab62
[id
[i
] - '0'];
5666 /* If we've had this malformed message too long, sling it. */
5668 if (now
- received_time
.tv_sec
> keep_malformed
)
5670 Uunlink(spool_fname(US
"msglog", message_subdir
, id
, US
""));
5671 Uunlink(spool_fname(US
"input", message_subdir
, id
, US
"-D"));
5672 Uunlink(spool_fname(US
"input", message_subdir
, id
, US
"-H"));
5673 Uunlink(spool_fname(US
"input", message_subdir
, id
, US
"-J"));
5674 log_write(0, LOG_MAIN
, "Message removed because older than %s",
5675 readconf_printtime(keep_malformed
));
5678 (void)close(deliver_datafile
);
5679 deliver_datafile
= -1;
5680 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5684 /* The spool header file has been read. Look to see if there is an existing
5685 journal file for this message. If there is, it means that a previous delivery
5686 attempt crashed (program or host) before it could update the spool header file.
5687 Read the list of delivered addresses from the journal and add them to the
5688 nonrecipients tree. Then update the spool file. We can leave the journal in
5689 existence, as it will get further successful deliveries added to it in this
5690 run, and it will be deleted if this function gets to its end successfully.
5691 Otherwise it might be needed again. */
5694 uschar
* fname
= spool_fname(US
"input", message_subdir
, id
, US
"-J");
5697 if ( (journal_fd
= Uopen(fname
, O_RDWR
|O_APPEND
5705 && lseek(journal_fd
, 0, SEEK_SET
) == 0
5706 && (jread
= fdopen(journal_fd
, "rb"))
5709 while (Ufgets(big_buffer
, big_buffer_size
, jread
))
5711 int n
= Ustrlen(big_buffer
);
5712 big_buffer
[n
-1] = 0;
5713 tree_add_nonrecipient(big_buffer
);
5714 DEBUG(D_deliver
) debug_printf("Previously delivered address %s taken from "
5715 "journal file\n", big_buffer
);
5718 if ((journal_fd
= dup(fileno(jread
))) < 0)
5719 journal_fd
= fileno(jread
);
5721 (void) fclose(jread
); /* Try to not leak the FILE resource */
5723 /* Panic-dies on error */
5724 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
5726 else if (errno
!= ENOENT
)
5728 log_write(0, LOG_MAIN
|LOG_PANIC
, "attempt to open journal for reading gave: "
5729 "%s", strerror(errno
));
5730 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5733 /* A null recipients list indicates some kind of disaster. */
5735 if (!recipients_list
)
5737 (void)close(deliver_datafile
);
5738 deliver_datafile
= -1;
5739 log_write(0, LOG_MAIN
, "Spool error: no recipients for %s", fname
);
5740 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5745 /* Handle a message that is frozen. There are a number of different things that
5746 can happen, but in the default situation, unless forced, no delivery is
5749 if (f
.deliver_freeze
)
5751 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
5752 /* Moving to another directory removes the message from Exim's view. Other
5753 tools must be used to deal with it. Logging of this action happens in
5754 spool_move_message() and its subfunctions. */
5756 if ( move_frozen_messages
5757 && spool_move_message(id
, message_subdir
, US
"", US
"F")
5759 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5762 /* For all frozen messages (bounces or not), timeout_frozen_after sets the
5763 maximum time to keep messages that are frozen. Thaw if we reach it, with a
5764 flag causing all recipients to be failed. The time is the age of the
5765 message, not the time since freezing. */
5767 if (timeout_frozen_after
> 0 && message_age
>= timeout_frozen_after
)
5769 log_write(0, LOG_MAIN
, "cancelled by timeout_frozen_after");
5770 process_recipients
= RECIP_FAIL_TIMEOUT
;
5773 /* For bounce messages (and others with no sender), thaw if the error message
5774 ignore timer is exceeded. The message will be discarded if this delivery
5777 else if (!*sender_address
&& message_age
>= ignore_bounce_errors_after
)
5778 log_write(0, LOG_MAIN
, "Unfrozen by errmsg timer");
5780 /* If this is a bounce message, or there's no auto thaw, or we haven't
5781 reached the auto thaw time yet, and this delivery is not forced by an admin
5782 user, do not attempt delivery of this message. Note that forced is set for
5783 continuing messages down the same channel, in order to skip load checking and
5784 ignore hold domains, but we don't want unfreezing in that case. */
5788 if ( ( sender_address
[0] == 0
5790 || now
<= deliver_frozen_at
+ auto_thaw
5792 && ( !forced
|| !f
.deliver_force_thaw
5793 || !f
.admin_user
|| continue_hostname
5796 (void)close(deliver_datafile
);
5797 deliver_datafile
= -1;
5798 log_write(L_skip_delivery
, LOG_MAIN
, "Message is frozen");
5799 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5802 /* If delivery was forced (by an admin user), assume a manual thaw.
5803 Otherwise it's an auto thaw. */
5807 f
.deliver_manual_thaw
= TRUE
;
5808 log_write(0, LOG_MAIN
, "Unfrozen by forced delivery");
5810 else log_write(0, LOG_MAIN
, "Unfrozen by auto-thaw");
5813 /* We get here if any of the rules for unfreezing have triggered. */
5815 f
.deliver_freeze
= FALSE
;
5816 update_spool
= TRUE
;
5820 /* Open the message log file if we are using them. This records details of
5821 deliveries, deferments, and failures for the benefit of the mail administrator.
5822 The log is not used by exim itself to track the progress of a message; that is
5823 done by rewriting the header spool file. */
5827 uschar
* fname
= spool_fname(US
"msglog", message_subdir
, id
, US
"");
5831 if ((fd
= open_msglog_file(fname
, SPOOL_MODE
, &error
)) < 0)
5833 log_write(0, LOG_MAIN
|LOG_PANIC
, "Couldn't %s message log %s: %s", error
,
5834 fname
, strerror(errno
));
5835 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5838 /* Make a C stream out of it. */
5840 if (!(message_log
= fdopen(fd
, "a")))
5842 log_write(0, LOG_MAIN
|LOG_PANIC
, "Couldn't fdopen message log %s: %s",
5843 fname
, strerror(errno
));
5844 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5849 /* If asked to give up on a message, log who did it, and set the action for all
5854 struct passwd
*pw
= getpwuid(real_uid
);
5855 log_write(0, LOG_MAIN
, "cancelled by %s",
5856 pw
? US pw
->pw_name
: string_sprintf("uid %ld", (long int)real_uid
));
5857 process_recipients
= RECIP_FAIL
;
5860 /* Otherwise, if there are too many Received: headers, fail all recipients. */
5862 else if (received_count
> received_headers_max
)
5863 process_recipients
= RECIP_FAIL_LOOP
;
5865 /* Otherwise, if a system-wide, address-independent message filter is
5866 specified, run it now, except in the case when we are failing all recipients as
5867 a result of timeout_frozen_after. If the system filter yields "delivered", then
5868 ignore the true recipients of the message. Failure of the filter file is
5869 logged, and the delivery attempt fails. */
5871 else if (system_filter
&& process_recipients
!= RECIP_FAIL_TIMEOUT
)
5876 redirect_block redirect
;
5878 if (system_filter_uid_set
)
5880 ugid
.uid
= system_filter_uid
;
5881 ugid
.gid
= system_filter_gid
;
5882 ugid
.uid_set
= ugid
.gid_set
= TRUE
;
5885 ugid
.uid_set
= ugid
.gid_set
= FALSE
;
5887 return_path
= sender_address
;
5888 f
.enable_dollar_recipients
= TRUE
; /* Permit $recipients in system filter */
5889 f
.system_filtering
= TRUE
;
5891 /* Any error in the filter file causes a delivery to be abandoned. */
5893 redirect
.string
= system_filter
;
5894 redirect
.isfile
= TRUE
;
5895 redirect
.check_owner
= redirect
.check_group
= FALSE
;
5896 redirect
.owners
= NULL
;
5897 redirect
.owngroups
= NULL
;
5899 redirect
.modemask
= 0;
5901 DEBUG(D_deliver
|D_filter
) debug_printf("running system filter\n");
5904 &redirect
, /* Where the data is */
5905 RDO_DEFER
| /* Turn on all the enabling options */
5906 RDO_FAIL
| /* Leave off all the disabling options */
5911 NULL
, /* No :include: restriction (not used in filter) */
5912 NULL
, /* No sieve vacation directory (not sieve!) */
5913 NULL
, /* No sieve enotify mailto owner (not sieve!) */
5914 NULL
, /* No sieve user address (not sieve!) */
5915 NULL
, /* No sieve subaddress (not sieve!) */
5916 &ugid
, /* uid/gid data */
5917 &addr_new
, /* Where to hang generated addresses */
5918 &filter_message
, /* Where to put error message */
5919 NULL
, /* Don't skip syntax errors */
5920 &filtertype
, /* Will always be set to FILTER_EXIM for this call */
5921 US
"system filter"); /* For error messages */
5923 DEBUG(D_deliver
|D_filter
) debug_printf("system filter returned %d\n", rc
);
5925 if (rc
== FF_ERROR
|| rc
== FF_NONEXIST
)
5927 (void)close(deliver_datafile
);
5928 deliver_datafile
= -1;
5929 log_write(0, LOG_MAIN
|LOG_PANIC
, "Error in system filter: %s",
5930 string_printing(filter_message
));
5931 return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
5934 /* Reset things. If the filter message is an empty string, which can happen
5935 for a filter "fail" or "freeze" command with no text, reset it to NULL. */
5937 f
.system_filtering
= FALSE
;
5938 f
.enable_dollar_recipients
= FALSE
;
5939 if (filter_message
&& filter_message
[0] == 0) filter_message
= NULL
;
5941 /* Save the values of the system filter variables so that user filters
5944 memcpy(filter_sn
, filter_n
, sizeof(filter_sn
));
5946 /* The filter can request that delivery of the original addresses be
5951 process_recipients
= RECIP_DEFER
;
5952 deliver_msglog("Delivery deferred by system filter\n");
5953 log_write(0, LOG_MAIN
, "Delivery deferred by system filter");
5956 /* The filter can request that a message be frozen, but this does not
5957 take place if the message has been manually thawed. In that case, we must
5958 unset "delivered", which is forced by the "freeze" command to make -bF
5961 else if (rc
== FF_FREEZE
&& !f
.deliver_manual_thaw
)
5963 f
.deliver_freeze
= TRUE
;
5964 deliver_frozen_at
= time(NULL
);
5965 process_recipients
= RECIP_DEFER
;
5966 frozen_info
= string_sprintf(" by the system filter%s%s",
5967 filter_message
? US
": " : US
"",
5968 filter_message
? filter_message
: US
"");
5971 /* The filter can request that a message be failed. The error message may be
5972 quite long - it is sent back to the sender in the bounce - but we don't want
5973 to fill up the log with repetitions of it. If it starts with << then the text
5974 between << and >> is written to the log, with the rest left for the bounce
5977 else if (rc
== FF_FAIL
)
5979 uschar
*colon
= US
"";
5980 uschar
*logmsg
= US
"";
5983 process_recipients
= RECIP_FAIL_FILTER
;
5989 if ( filter_message
[0] == '<'
5990 && filter_message
[1] == '<'
5991 && (logend
= Ustrstr(filter_message
, ">>"))
5994 logmsg
= filter_message
+ 2;
5995 loglen
= logend
- logmsg
;
5996 filter_message
= logend
+ 2;
5997 if (filter_message
[0] == 0) filter_message
= NULL
;
6001 logmsg
= filter_message
;
6002 loglen
= Ustrlen(filter_message
);
6006 log_write(0, LOG_MAIN
, "cancelled by system filter%s%.*s", colon
, loglen
,
6010 /* Delivery can be restricted only to those recipients (if any) that the
6011 filter specified. */
6013 else if (rc
== FF_DELIVERED
)
6015 process_recipients
= RECIP_IGNORE
;
6017 log_write(0, LOG_MAIN
, "original recipients ignored (system filter)");
6019 log_write(0, LOG_MAIN
, "=> discarded (system filter)");
6022 /* If any new addresses were created by the filter, fake up a "parent"
6023 for them. This is necessary for pipes, etc., which are expected to have
6024 parents, and it also gives some sensible logging for others. Allow
6025 pipes, files, and autoreplies, and run them as the filter uid if set,
6026 otherwise as the current uid. */
6030 int uid
= system_filter_uid_set
? system_filter_uid
: geteuid();
6031 int gid
= system_filter_gid_set
? system_filter_gid
: getegid();
6033 /* The text "system-filter" is tested in transport_set_up_command() and in
6034 set_up_shell_command() in the pipe transport, to enable them to permit
6035 $recipients, so don't change it here without also changing it there. */
6037 address_item
*p
= addr_new
;
6038 address_item
*parent
= deliver_make_addr(US
"system-filter", FALSE
);
6040 parent
->domain
= string_copylc(qualify_domain_recipient
);
6041 parent
->local_part
= US
"system-filter";
6043 /* As part of this loop, we arrange for addr_last to end up pointing
6044 at the final address. This is used if we go on to add addresses for the
6045 original recipients. */
6049 if (parent
->child_count
== USHRT_MAX
)
6050 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "system filter generated more "
6051 "than %d delivery addresses", USHRT_MAX
);
6052 parent
->child_count
++;
6055 if (testflag(p
, af_pfr
))
6061 setflag(p
, af_uid_set
);
6062 setflag(p
, af_gid_set
);
6063 setflag(p
, af_allow_file
);
6064 setflag(p
, af_allow_pipe
);
6065 setflag(p
, af_allow_reply
);
6067 /* Find the name of the system filter's appropriate pfr transport */
6069 if (p
->address
[0] == '|')
6072 tpname
= system_filter_pipe_transport
;
6073 address_pipe
= p
->address
;
6075 else if (p
->address
[0] == '>')
6078 tpname
= system_filter_reply_transport
;
6082 if (p
->address
[Ustrlen(p
->address
)-1] == '/')
6084 type
= US
"directory";
6085 tpname
= system_filter_directory_transport
;
6090 tpname
= system_filter_file_transport
;
6092 address_file
= p
->address
;
6095 /* Now find the actual transport, first expanding the name. We have
6096 set address_file or address_pipe above. */
6100 uschar
*tmp
= expand_string(tpname
);
6101 address_file
= address_pipe
= NULL
;
6103 p
->message
= string_sprintf("failed to expand \"%s\" as a "
6104 "system filter transport name", tpname
);
6105 if (is_tainted(tmp
))
6106 p
->message
= string_sprintf("attempt to used tainted value '%s' for"
6107 "transport '%s' as a system filter", tmp
, tpname
);
6111 p
->message
= string_sprintf("system_filter_%s_transport is unset",
6116 transport_instance
*tp
;
6117 for (tp
= transports
; tp
; tp
= tp
->next
)
6118 if (Ustrcmp(tp
->name
, tpname
) == 0)
6124 p
->message
= string_sprintf("failed to find \"%s\" transport "
6125 "for system filter delivery", tpname
);
6128 /* If we couldn't set up a transport, defer the delivery, putting the
6129 error on the panic log as well as the main log. */
6133 address_item
*badp
= p
;
6135 if (!addr_last
) addr_new
= p
; else addr_last
->next
= p
;
6136 badp
->local_part
= badp
->address
; /* Needed for log line */
6137 post_process_one(badp
, DEFER
, LOG_MAIN
|LOG_PANIC
, EXIM_DTYPE_ROUTER
, 0);
6140 } /* End of pfr handling */
6142 /* Either a non-pfr delivery, or we found a transport */
6144 DEBUG(D_deliver
|D_filter
)
6145 debug_printf("system filter added %s\n", p
->address
);
6149 } /* Loop through all addr_new addresses */
6154 /* Scan the recipients list, and for every one that is not in the non-
6155 recipients tree, add an addr item to the chain of new addresses. If the pno
6156 value is non-negative, we must set the onetime parent from it. This which
6157 points to the relevant entry in the recipients list.
6159 This processing can be altered by the setting of the process_recipients
6160 variable, which is changed if recipients are to be ignored, failed, or
6161 deferred. This can happen as a result of system filter activity, or if the -Mg
6162 option is used to fail all of them.
6164 Duplicate addresses are handled later by a different tree structure; we can't
6165 just extend the non-recipients tree, because that will be re-written to the
6166 spool if the message is deferred, and in any case there are casing
6167 complications for local addresses. */
6169 if (process_recipients
!= RECIP_IGNORE
)
6170 for (i
= 0; i
< recipients_count
; i
++)
6171 if (!tree_search(tree_nonrecipients
, recipients_list
[i
].address
))
6173 recipient_item
*r
= recipients_list
+ i
;
6174 address_item
*new = deliver_make_addr(r
->address
, FALSE
);
6175 new->prop
.errors_address
= r
->errors_to
;
6177 if ((new->prop
.utf8_msg
= message_smtputf8
))
6179 new->prop
.utf8_downcvt
= message_utf8_downconvert
== 1;
6180 new->prop
.utf8_downcvt_maybe
= message_utf8_downconvert
== -1;
6181 DEBUG(D_deliver
) debug_printf("utf8, downconvert %s\n",
6182 new->prop
.utf8_downcvt
? "yes"
6183 : new->prop
.utf8_downcvt_maybe
? "ifneeded"
6189 new->onetime_parent
= recipients_list
[r
->pno
].address
;
6191 /* If DSN support is enabled, set the dsn flags and the original receipt
6192 to be passed on to other DSN enabled MTAs */
6194 new->dsn_flags
= r
->dsn_flags
& rf_dsnflags
;
6195 new->dsn_orcpt
= r
->orcpt
;
6196 DEBUG(D_deliver
) debug_printf("DSN: set orcpt: %s flags: 0x%x\n",
6197 new->dsn_orcpt
? new->dsn_orcpt
: US
"", new->dsn_flags
);
6199 switch (process_recipients
)
6201 /* RECIP_DEFER is set when a system filter freezes a message. */
6204 new->next
= addr_defer
;
6209 /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
6212 case RECIP_FAIL_FILTER
:
6214 filter_message
? filter_message
: US
"delivery cancelled";
6215 setflag(new, af_pass_message
);
6216 goto RECIP_QUEUE_FAILED
; /* below */
6219 /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older
6220 than the value in timeout_frozen_after. Treat non-bounce messages
6221 similarly to -Mg; for bounce messages we just want to discard, so
6222 don't put the address on the failed list. The timeout has already
6225 case RECIP_FAIL_TIMEOUT
:
6226 new->message
= US
"delivery cancelled; message timed out";
6227 goto RECIP_QUEUE_FAILED
; /* below */
6230 /* RECIP_FAIL is set when -Mg has been used. */
6233 new->message
= US
"delivery cancelled by administrator";
6236 /* Common code for the failure cases above. If this is not a bounce
6237 message, put the address on the failed list so that it is used to
6238 create a bounce. Otherwise do nothing - this just discards the address.
6239 The incident has already been logged. */
6242 if (sender_address
[0])
6244 new->next
= addr_failed
;
6250 /* RECIP_FAIL_LOOP is set when there are too many Received: headers
6251 in the message. Process each address as a routing failure; if this
6252 is a bounce message, it will get frozen. */
6254 case RECIP_FAIL_LOOP
:
6255 new->message
= US
"Too many \"Received\" headers - suspected mail loop";
6256 post_process_one(new, FAIL
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6260 /* Value should be RECIP_ACCEPT; take this as the safe default. */
6263 if (!addr_new
) addr_new
= new; else addr_last
->next
= new;
6268 #ifndef DISABLE_EVENT
6269 if (process_recipients
!= RECIP_ACCEPT
&& event_action
)
6271 uschar
* save_local
= deliver_localpart
;
6272 const uschar
* save_domain
= deliver_domain
;
6273 uschar
* addr
= new->address
, * errmsg
= NULL
;
6274 int start
, end
, dom
;
6276 if (!parse_extract_address(addr
, &errmsg
, &start
, &end
, &dom
, TRUE
))
6277 log_write(0, LOG_MAIN
|LOG_PANIC
,
6278 "failed to parse address '%.100s': %s\n", addr
, errmsg
);
6282 string_copyn(addr
+start
, dom
? (dom
-1) - start
: end
- start
);
6283 deliver_domain
= dom
? CUS
string_copyn(addr
+dom
, end
- dom
) : CUS
"";
6285 event_raise(event_action
, US
"msg:fail:internal", new->message
);
6287 deliver_localpart
= save_local
;
6288 deliver_domain
= save_domain
;
6296 debug_printf("Delivery address list:\n");
6297 for (address_item
* p
= addr_new
; p
; p
= p
->next
)
6298 debug_printf(" %s %s\n", p
->address
,
6299 p
->onetime_parent
? p
->onetime_parent
: US
"");
6302 /* Set up the buffers used for copying over the file when delivering. */
6304 deliver_in_buffer
= store_malloc(DELIVER_IN_BUFFER_SIZE
);
6305 deliver_out_buffer
= store_malloc(DELIVER_OUT_BUFFER_SIZE
);
6309 /* Until there are no more new addresses, handle each one as follows:
6311 . If this is a generated address (indicated by the presence of a parent
6312 pointer) then check to see whether it is a pipe, file, or autoreply, and
6313 if so, handle it directly here. The router that produced the address will
6314 have set the allow flags into the address, and also set the uid/gid required.
6315 Having the routers generate new addresses and then checking them here at
6316 the outer level is tidier than making each router do the checking, and
6317 means that routers don't need access to the failed address queue.
6319 . Break up the address into local part and domain, and make lowercased
6320 versions of these strings. We also make unquoted versions of the local part.
6322 . Handle the percent hack for those domains for which it is valid.
6324 . For child addresses, determine if any of the parents have the same address.
6325 If so, generate a different string for previous delivery checking. Without
6326 this code, if the address spqr generates spqr via a forward or alias file,
6327 delivery of the generated spqr stops further attempts at the top level spqr,
6328 which is not what is wanted - it may have generated other addresses.
6330 . Check on the retry database to see if routing was previously deferred, but
6331 only if in a queue run. Addresses that are to be routed are put on the
6332 addr_route chain. Addresses that are to be deferred are put on the
6333 addr_defer chain. We do all the checking first, so as not to keep the
6334 retry database open any longer than necessary.
6336 . Now we run the addresses through the routers. A router may put the address
6337 on either the addr_local or the addr_remote chain for local or remote
6338 delivery, respectively, or put it on the addr_failed chain if it is
6339 undeliveable, or it may generate child addresses and put them on the
6340 addr_new chain, or it may defer an address. All the chain anchors are
6341 passed as arguments so that the routers can be called for verification
6344 . If new addresses have been generated by the routers, da capo.
6347 f
.header_rewritten
= FALSE
; /* No headers rewritten yet */
6348 while (addr_new
) /* Loop until all addresses dealt with */
6350 address_item
*addr
, *parent
;
6352 /* Failure to open the retry database is treated the same as if it does
6353 not exist. In both cases, dbm_file is NULL. */
6355 if (!(dbm_file
= dbfn_open(US
"retry", O_RDONLY
, &dbblock
, FALSE
, TRUE
)))
6356 DEBUG(D_deliver
|D_retry
|D_route
|D_hints_lookup
)
6357 debug_printf("no retry data available\n");
6359 /* Scan the current batch of new addresses, to handle pipes, files and
6360 autoreplies, and determine which others are ready for routing. */
6367 dbdata_retry
*domain_retry_record
;
6368 dbdata_retry
*address_retry_record
;
6371 addr_new
= addr
->next
;
6373 DEBUG(D_deliver
|D_retry
|D_route
)
6375 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
6376 debug_printf("Considering: %s\n", addr
->address
);
6379 /* Handle generated address that is a pipe or a file or an autoreply. */
6381 if (testflag(addr
, af_pfr
))
6383 /* If an autoreply in a filter could not generate a syntactically valid
6384 address, give up forthwith. Set af_ignore_error so that we don't try to
6385 generate a bounce. */
6387 if (testflag(addr
, af_bad_reply
))
6389 addr
->basic_errno
= ERRNO_BADADDRESS2
;
6390 addr
->local_part
= addr
->address
;
6392 US
"filter autoreply generated syntactically invalid recipient";
6393 addr
->prop
.ignore_error
= TRUE
;
6394 (void) post_process_one(addr
, FAIL
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6395 continue; /* with the next new address */
6398 /* If two different users specify delivery to the same pipe or file or
6399 autoreply, there should be two different deliveries, so build a unique
6400 string that incorporates the original address, and use this for
6401 duplicate testing and recording delivery, and also for retrying. */
6404 string_sprintf("%s:%s", addr
->address
, addr
->parent
->unique
+
6405 (testflag(addr
->parent
, af_homonym
)? 3:0));
6407 addr
->address_retry_key
= addr
->domain_retry_key
=
6408 string_sprintf("T:%s", addr
->unique
);
6410 /* If a filter file specifies two deliveries to the same pipe or file,
6411 we want to de-duplicate, but this is probably not wanted for two mail
6412 commands to the same address, where probably both should be delivered.
6413 So, we have to invent a different unique string in that case. Just
6414 keep piling '>' characters on the front. */
6416 if (addr
->address
[0] == '>')
6417 while (tree_search(tree_duplicates
, addr
->unique
))
6418 addr
->unique
= string_sprintf(">%s", addr
->unique
);
6420 else if ((tnode
= tree_search(tree_duplicates
, addr
->unique
)))
6422 DEBUG(D_deliver
|D_route
)
6423 debug_printf("%s is a duplicate address: discarded\n", addr
->address
);
6424 addr
->dupof
= tnode
->data
.ptr
;
6425 addr
->next
= addr_duplicate
;
6426 addr_duplicate
= addr
;
6430 DEBUG(D_deliver
|D_route
) debug_printf("unique = %s\n", addr
->unique
);
6432 /* Check for previous delivery */
6434 if (tree_search(tree_nonrecipients
, addr
->unique
))
6436 DEBUG(D_deliver
|D_route
)
6437 debug_printf("%s was previously delivered: discarded\n", addr
->address
);
6438 child_done(addr
, tod_stamp(tod_log
));
6442 /* Save for checking future duplicates */
6444 tree_add_duplicate(addr
->unique
, addr
);
6446 /* Set local part and domain */
6448 addr
->local_part
= addr
->address
;
6449 addr
->domain
= addr
->parent
->domain
;
6451 /* Ensure that the delivery is permitted. */
6453 if (testflag(addr
, af_file
))
6455 if (!testflag(addr
, af_allow_file
))
6457 addr
->basic_errno
= ERRNO_FORBIDFILE
;
6458 addr
->message
= US
"delivery to file forbidden";
6459 (void)post_process_one(addr
, FAIL
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6460 continue; /* with the next new address */
6463 else if (addr
->address
[0] == '|')
6465 if (!testflag(addr
, af_allow_pipe
))
6467 addr
->basic_errno
= ERRNO_FORBIDPIPE
;
6468 addr
->message
= US
"delivery to pipe forbidden";
6469 (void)post_process_one(addr
, FAIL
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6470 continue; /* with the next new address */
6473 else if (!testflag(addr
, af_allow_reply
))
6475 addr
->basic_errno
= ERRNO_FORBIDREPLY
;
6476 addr
->message
= US
"autoreply forbidden";
6477 (void)post_process_one(addr
, FAIL
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6478 continue; /* with the next new address */
6481 /* If the errno field is already set to BADTRANSPORT, it indicates
6482 failure to expand a transport string, or find the associated transport,
6483 or an unset transport when one is required. Leave this test till now so
6484 that the forbid errors are given in preference. */
6486 if (addr
->basic_errno
== ERRNO_BADTRANSPORT
)
6488 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6492 /* Treat /dev/null as a special case and abandon the delivery. This
6493 avoids having to specify a uid on the transport just for this case.
6494 Arrange for the transport name to be logged as "**bypassed**". */
6496 if (Ustrcmp(addr
->address
, "/dev/null") == 0)
6498 uschar
*save
= addr
->transport
->name
;
6499 addr
->transport
->name
= US
"**bypassed**";
6500 (void)post_process_one(addr
, OK
, LOG_MAIN
, EXIM_DTYPE_TRANSPORT
, '=');
6501 addr
->transport
->name
= save
;
6502 continue; /* with the next new address */
6505 /* Pipe, file, or autoreply delivery is to go ahead as a normal local
6508 DEBUG(D_deliver
|D_route
)
6509 debug_printf("queued for %s transport\n", addr
->transport
->name
);
6510 addr
->next
= addr_local
;
6512 continue; /* with the next new address */
6515 /* Handle normal addresses. First, split up into local part and domain,
6516 handling the %-hack if necessary. There is the possibility of a defer from
6517 a lookup in percent_hack_domains. */
6519 if ((rc
= deliver_split_address(addr
)) == DEFER
)
6521 addr
->message
= US
"cannot check percent_hack_domains";
6522 addr
->basic_errno
= ERRNO_LISTDEFER
;
6523 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_NONE
, 0);
6527 /* Check to see if the domain is held. If so, proceed only if the
6528 delivery was forced by hand. */
6530 deliver_domain
= addr
->domain
; /* set $domain */
6531 if ( !forced
&& hold_domains
6532 && (rc
= match_isinlist(addr
->domain
, (const uschar
**)&hold_domains
, 0,
6533 &domainlist_anchor
, addr
->domain_cache
, MCL_DOMAIN
, TRUE
,
6539 addr
->message
= US
"hold_domains lookup deferred";
6540 addr
->basic_errno
= ERRNO_LISTDEFER
;
6544 addr
->message
= US
"domain is held";
6545 addr
->basic_errno
= ERRNO_HELD
;
6547 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_NONE
, 0);
6551 /* Now we can check for duplicates and previously delivered addresses. In
6552 order to do this, we have to generate a "unique" value for each address,
6553 because there may be identical actual addresses in a line of descendents.
6554 The "unique" field is initialized to the same value as the "address" field,
6555 but gets changed here to cope with identically-named descendents. */
6557 for (parent
= addr
->parent
; parent
; parent
= parent
->parent
)
6558 if (strcmpic(addr
->address
, parent
->address
) == 0) break;
6560 /* If there's an ancestor with the same name, set the homonym flag. This
6561 influences how deliveries are recorded. Then add a prefix on the front of
6562 the unique address. We use \n\ where n starts at 0 and increases each time.
6563 It is unlikely to pass 9, but if it does, it may look odd but will still
6564 work. This means that siblings or cousins with the same names are treated
6565 as duplicates, which is what we want. */
6569 setflag(addr
, af_homonym
);
6570 if (parent
->unique
[0] != '\\')
6571 addr
->unique
= string_sprintf("\\0\\%s", addr
->address
);
6573 addr
->unique
= string_sprintf("\\%c\\%s", parent
->unique
[1] + 1,
6577 /* Ensure that the domain in the unique field is lower cased, because
6578 domains are always handled caselessly. */
6580 p
= Ustrrchr(addr
->unique
, '@');
6581 while (*p
!= 0) { *p
= tolower(*p
); p
++; }
6583 DEBUG(D_deliver
|D_route
) debug_printf("unique = %s\n", addr
->unique
);
6585 if (tree_search(tree_nonrecipients
, addr
->unique
))
6587 DEBUG(D_deliver
|D_route
)
6588 debug_printf("%s was previously delivered: discarded\n", addr
->unique
);
6589 child_done(addr
, tod_stamp(tod_log
));
6593 /* Get the routing retry status, saving the two retry keys (with and
6594 without the local part) for subsequent use. If there is no retry record for
6595 the standard address routing retry key, we look for the same key with the
6596 sender attached, because this form is used by the smtp transport after a
6597 4xx response to RCPT when address_retry_include_sender is true. */
6599 addr
->domain_retry_key
= string_sprintf("R:%s", addr
->domain
);
6600 addr
->address_retry_key
= string_sprintf("R:%s@%s", addr
->local_part
,
6605 domain_retry_record
= dbfn_read(dbm_file
, addr
->domain_retry_key
);
6606 if ( domain_retry_record
6607 && now
- domain_retry_record
->time_stamp
> retry_data_expire
6610 DEBUG(D_deliver
|D_retry
)
6611 debug_printf("domain retry record present but expired\n");
6612 domain_retry_record
= NULL
; /* Ignore if too old */
6615 address_retry_record
= dbfn_read(dbm_file
, addr
->address_retry_key
);
6616 if ( address_retry_record
6617 && now
- address_retry_record
->time_stamp
> retry_data_expire
6620 DEBUG(D_deliver
|D_retry
)
6621 debug_printf("address retry record present but expired\n");
6622 address_retry_record
= NULL
; /* Ignore if too old */
6625 if (!address_retry_record
)
6627 uschar
*altkey
= string_sprintf("%s:<%s>", addr
->address_retry_key
,
6629 address_retry_record
= dbfn_read(dbm_file
, altkey
);
6630 if ( address_retry_record
6631 && now
- address_retry_record
->time_stamp
> retry_data_expire
)
6633 DEBUG(D_deliver
|D_retry
)
6634 debug_printf("address<sender> retry record present but expired\n");
6635 address_retry_record
= NULL
; /* Ignore if too old */
6640 domain_retry_record
= address_retry_record
= NULL
;
6642 DEBUG(D_deliver
|D_retry
)
6644 if (!domain_retry_record
)
6645 debug_printf("no domain retry record\n");
6647 debug_printf("have domain retry record; next_try = now%+d\n",
6648 f
.running_in_test_harness
? 0 :
6649 (int)(domain_retry_record
->next_try
- now
));
6651 if (!address_retry_record
)
6652 debug_printf("no address retry record\n");
6654 debug_printf("have address retry record; next_try = now%+d\n",
6655 f
.running_in_test_harness
? 0 :
6656 (int)(address_retry_record
->next_try
- now
));
6659 /* If we are sending a message down an existing SMTP connection, we must
6660 assume that the message which created the connection managed to route
6661 an address to that connection. We do not want to run the risk of taking
6662 a long time over routing here, because if we do, the server at the other
6663 end of the connection may time it out. This is especially true for messages
6664 with lots of addresses. For this kind of delivery, queue_running is not
6665 set, so we would normally route all addresses. We take a pragmatic approach
6666 and defer routing any addresses that have any kind of domain retry record.
6667 That is, we don't even look at their retry times. It doesn't matter if this
6668 doesn't work occasionally. This is all just an optimization, after all.
6670 The reason for not doing the same for address retries is that they normally
6671 arise from 4xx responses, not DNS timeouts. */
6673 if (continue_hostname
&& domain_retry_record
)
6675 addr
->message
= US
"reusing SMTP connection skips previous routing defer";
6676 addr
->basic_errno
= ERRNO_RRETRY
;
6677 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6679 addr
->message
= domain_retry_record
->text
;
6680 setflag(addr
, af_pass_message
);
6683 /* If we are in a queue run, defer routing unless there is no retry data or
6684 we've passed the next retry time, or this message is forced. In other
6685 words, ignore retry data when not in a queue run.
6687 However, if the domain retry time has expired, always allow the routing
6688 attempt. If it fails again, the address will be failed. This ensures that
6689 each address is routed at least once, even after long-term routing
6692 If there is an address retry, check that too; just wait for the next
6693 retry time. This helps with the case when the temporary error on the
6694 address was really message-specific rather than address specific, since
6695 it allows other messages through.
6697 We also wait for the next retry time if this is a message sent down an
6698 existing SMTP connection (even though that will be forced). Otherwise there
6699 will be far too many attempts for an address that gets a 4xx error. In
6700 fact, after such an error, we should not get here because, the host should
6701 not be remembered as one this message needs. However, there was a bug that
6702 used to cause this to happen, so it is best to be on the safe side.
6704 Even if we haven't reached the retry time in the hints, there is one more
6705 check to do, which is for the ultimate address timeout. We only do this
6706 check if there is an address retry record and there is not a domain retry
6707 record; this implies that previous attempts to handle the address had the
6708 retry_use_local_parts option turned on. We use this as an approximation
6709 for the destination being like a local delivery, for example delivery over
6710 LMTP to an IMAP message store. In this situation users are liable to bump
6711 into their quota and thereby have intermittently successful deliveries,
6712 which keep the retry record fresh, which can lead to us perpetually
6713 deferring messages. */
6715 else if ( ( f
.queue_running
&& !f
.deliver_force
6716 || continue_hostname
6718 && ( ( domain_retry_record
6719 && now
< domain_retry_record
->next_try
6720 && !domain_retry_record
->expired
6722 || ( address_retry_record
6723 && now
< address_retry_record
->next_try
6725 && ( domain_retry_record
6726 || !address_retry_record
6727 || !retry_ultimate_address_timeout(addr
->address_retry_key
,
6728 addr
->domain
, address_retry_record
, now
)
6731 addr
->message
= US
"retry time not reached";
6732 addr
->basic_errno
= ERRNO_RRETRY
;
6733 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6735 /* For remote-retry errors (here and just above) that we've not yet
6736 hit the retry time, use the error recorded in the retry database
6737 as info in the warning message. This lets us send a message even
6738 when we're not failing on a fresh attempt. We assume that this
6739 info is not sensitive. */
6741 addr
->message
= domain_retry_record
6742 ? domain_retry_record
->text
: address_retry_record
->text
;
6743 setflag(addr
, af_pass_message
);
6746 /* The domain is OK for routing. Remember if retry data exists so it
6747 can be cleaned up after a successful delivery. */
6751 if (domain_retry_record
|| address_retry_record
)
6752 setflag(addr
, af_dr_retry_exists
);
6753 addr
->next
= addr_route
;
6755 DEBUG(D_deliver
|D_route
)
6756 debug_printf("%s: queued for routing\n", addr
->address
);
6760 /* The database is closed while routing is actually happening. Requests to
6761 update it are put on a chain and all processed together at the end. */
6763 if (dbm_file
) dbfn_close(dbm_file
);
6765 /* If queue_domains is set, we don't even want to try routing addresses in
6766 those domains. During queue runs, queue_domains is forced to be unset.
6767 Optimize by skipping this pass through the addresses if nothing is set. */
6769 if (!f
.deliver_force
&& queue_domains
)
6771 address_item
*okaddr
= NULL
;
6774 address_item
*addr
= addr_route
;
6775 addr_route
= addr
->next
;
6777 deliver_domain
= addr
->domain
; /* set $domain */
6778 if ((rc
= match_isinlist(addr
->domain
, (const uschar
**)&queue_domains
, 0,
6779 &domainlist_anchor
, addr
->domain_cache
, MCL_DOMAIN
, TRUE
, NULL
))
6783 addr
->basic_errno
= ERRNO_LISTDEFER
;
6784 addr
->message
= US
"queue_domains lookup deferred";
6785 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6789 addr
->next
= okaddr
;
6794 addr
->basic_errno
= ERRNO_QUEUE_DOMAIN
;
6795 addr
->message
= US
"domain is in queue_domains";
6796 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6800 addr_route
= okaddr
;
6803 /* Now route those addresses that are not deferred. */
6808 address_item
*addr
= addr_route
;
6809 const uschar
*old_domain
= addr
->domain
;
6810 uschar
*old_unique
= addr
->unique
;
6811 addr_route
= addr
->next
;
6814 /* Just in case some router parameter refers to it. */
6816 if (!(return_path
= addr
->prop
.errors_address
))
6817 return_path
= sender_address
;
6819 /* If a router defers an address, add a retry item. Whether or not to
6820 use the local part in the key is a property of the router. */
6822 if ((rc
= route_address(addr
, &addr_local
, &addr_remote
, &addr_new
,
6823 &addr_succeed
, v_none
)) == DEFER
)
6824 retry_add_item(addr
,
6825 addr
->router
->retry_use_local_part
6826 ? string_sprintf("R:%s@%s", addr
->local_part
, addr
->domain
)
6827 : string_sprintf("R:%s", addr
->domain
),
6830 /* Otherwise, if there is an existing retry record in the database, add
6831 retry items to delete both forms. We must also allow for the possibility
6832 of a routing retry that includes the sender address. Since the domain might
6833 have been rewritten (expanded to fully qualified) as a result of routing,
6834 ensure that the rewritten form is also deleted. */
6836 else if (testflag(addr
, af_dr_retry_exists
))
6838 uschar
*altkey
= string_sprintf("%s:<%s>", addr
->address_retry_key
,
6840 retry_add_item(addr
, altkey
, rf_delete
);
6841 retry_add_item(addr
, addr
->address_retry_key
, rf_delete
);
6842 retry_add_item(addr
, addr
->domain_retry_key
, rf_delete
);
6843 if (Ustrcmp(addr
->domain
, old_domain
) != 0)
6844 retry_add_item(addr
, string_sprintf("R:%s", old_domain
), rf_delete
);
6847 /* DISCARD is given for :blackhole: and "seen finish". The event has been
6848 logged, but we need to ensure the address (and maybe parents) is marked
6853 address_done(addr
, tod_stamp(tod_log
));
6854 continue; /* route next address */
6857 /* The address is finished with (failed or deferred). */
6861 (void)post_process_one(addr
, rc
, LOG_MAIN
, EXIM_DTYPE_ROUTER
, 0);
6862 continue; /* route next address */
6865 /* The address has been routed. If the router changed the domain, it will
6866 also have changed the unique address. We have to test whether this address
6867 has already been delivered, because it's the unique address that finally
6870 if ( addr
->unique
!= old_unique
6871 && tree_search(tree_nonrecipients
, addr
->unique
) != 0
6874 DEBUG(D_deliver
|D_route
) debug_printf("%s was previously delivered: "
6875 "discarded\n", addr
->address
);
6876 if (addr_remote
== addr
) addr_remote
= addr
->next
;
6877 else if (addr_local
== addr
) addr_local
= addr
->next
;
6880 /* If the router has same_domain_copy_routing set, we are permitted to copy
6881 the routing for any other addresses with the same domain. This is an
6882 optimisation to save repeated DNS lookups for "standard" remote domain
6883 routing. The option is settable only on routers that generate host lists.
6884 We play it very safe, and do the optimization only if the address is routed
6885 to a remote transport, there are no header changes, and the domain was not
6886 modified by the router. */
6888 if ( addr_remote
== addr
6889 && addr
->router
->same_domain_copy_routing
6890 && !addr
->prop
.extra_headers
6891 && !addr
->prop
.remove_headers
6892 && old_domain
== addr
->domain
6895 address_item
**chain
= &addr_route
;
6898 address_item
*addr2
= *chain
;
6899 if (Ustrcmp(addr2
->domain
, addr
->domain
) != 0)
6901 chain
= &(addr2
->next
);
6905 /* Found a suitable address; take it off the routing list and add it to
6906 the remote delivery list. */
6908 *chain
= addr2
->next
;
6909 addr2
->next
= addr_remote
;
6910 addr_remote
= addr2
;
6912 /* Copy the routing data */
6914 addr2
->domain
= addr
->domain
;
6915 addr2
->router
= addr
->router
;
6916 addr2
->transport
= addr
->transport
;
6917 addr2
->host_list
= addr
->host_list
;
6918 addr2
->fallback_hosts
= addr
->fallback_hosts
;
6919 addr2
->prop
.errors_address
= addr
->prop
.errors_address
;
6920 copyflag(addr2
, addr
, af_hide_child
);
6921 copyflag(addr2
, addr
, af_local_host_removed
);
6923 DEBUG(D_deliver
|D_route
)
6924 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
6926 "Routing for %s copied from %s\n",
6927 addr2
->address
, addr2
->address
, addr
->address
);
6930 } /* Continue with routing the next address. */
6931 } /* Loop to process any child addresses that the routers created, and
6932 any rerouted addresses that got put back on the new chain. */
6935 /* Debugging: show the results of the routing */
6937 DEBUG(D_deliver
|D_retry
|D_route
)
6939 debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
6940 debug_printf("After routing:\n Local deliveries:\n");
6941 for (address_item
* p
= addr_local
; p
; p
= p
->next
)
6942 debug_printf(" %s\n", p
->address
);
6944 debug_printf(" Remote deliveries:\n");
6945 for (address_item
* p
= addr_remote
; p
; p
= p
->next
)
6946 debug_printf(" %s\n", p
->address
);
6948 debug_printf(" Failed addresses:\n");
6949 for (address_item
* p
= addr_failed
; p
; p
= p
->next
)
6950 debug_printf(" %s\n", p
->address
);
6952 debug_printf(" Deferred addresses:\n");
6953 for (address_item
* p
= addr_defer
; p
; p
= p
->next
)
6954 debug_printf(" %s\n", p
->address
);
6957 /* Free any resources that were cached during routing. */
6962 /* These two variables are set only during routing, after check_local_user.
6963 Ensure they are not set in transports. */
6965 local_user_gid
= (gid_t
)(-1);
6966 local_user_uid
= (uid_t
)(-1);
6968 /* Check for any duplicate addresses. This check is delayed until after
6969 routing, because the flexibility of the routing configuration means that
6970 identical addresses with different parentage may end up being redirected to
6971 different addresses. Checking for duplicates too early (as we previously used
6972 to) makes this kind of thing not work. */
6974 do_duplicate_check(&addr_local
);
6975 do_duplicate_check(&addr_remote
);
6977 /* When acting as an MUA wrapper, we proceed only if all addresses route to a
6978 remote transport. The check that they all end up in one transaction happens in
6979 the do_remote_deliveries() function. */
6982 && (addr_local
|| addr_failed
|| addr_defer
)
6986 uschar
*which
, *colon
, *msg
;
6993 else if (addr_defer
)
6996 which
= US
"deferred";
7004 while (addr
->parent
) addr
= addr
->parent
;
7009 msg
= addr
->message
;
7011 else colon
= msg
= US
"";
7013 /* We don't need to log here for a forced failure as it will already
7014 have been logged. Defer will also have been logged, but as a defer, so we do
7015 need to do the failure logging. */
7017 if (addr
!= addr_failed
)
7018 log_write(0, LOG_MAIN
, "** %s routing yielded a %s delivery",
7019 addr
->address
, which
);
7021 /* Always write an error to the caller */
7023 fprintf(stderr
, "routing %s yielded a %s delivery%s%s\n", addr
->address
,
7026 final_yield
= DELIVER_MUA_FAILED
;
7027 addr_failed
= addr_defer
= NULL
; /* So that we remove the message */
7028 goto DELIVERY_TIDYUP
;
7032 /* If this is a run to continue deliveries to an external channel that is
7033 already set up, defer any local deliveries. */
7035 if (continue_transport
)
7039 address_item
*addr
= addr_defer
;
7040 while (addr
->next
) addr
= addr
->next
;
7041 addr
->next
= addr_local
;
7044 addr_defer
= addr_local
;
7049 /* Because address rewriting can happen in the routers, we should not really do
7050 ANY deliveries until all addresses have been routed, so that all recipients of
7051 the message get the same headers. However, this is in practice not always
7052 possible, since sometimes remote addresses give DNS timeouts for days on end.
7053 The pragmatic approach is to deliver what we can now, saving any rewritten
7054 headers so that at least the next lot of recipients benefit from the rewriting
7055 that has already been done.
7057 If any headers have been rewritten during routing, update the spool file to
7058 remember them for all subsequent deliveries. This can be delayed till later if
7059 there is only address to be delivered - if it succeeds the spool write need not
7062 if ( f
.header_rewritten
7063 && ( addr_local
&& (addr_local
->next
|| addr_remote
)
7064 || addr_remote
&& addr_remote
->next
7067 /* Panic-dies on error */
7068 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
7069 f
.header_rewritten
= FALSE
;
7073 /* If there are any deliveries to do and we do not already have the journal
7074 file, create it. This is used to record successful deliveries as soon as
7075 possible after each delivery is known to be complete. A file opened with
7076 O_APPEND is used so that several processes can run simultaneously.
7078 The journal is just insurance against crashes. When the spool file is
7079 ultimately updated at the end of processing, the journal is deleted. If a
7080 journal is found to exist at the start of delivery, the addresses listed
7081 therein are added to the non-recipients. */
7083 if (addr_local
|| addr_remote
)
7087 uschar
* fname
= spool_fname(US
"input", message_subdir
, id
, US
"-J");
7089 if ((journal_fd
= Uopen(fname
,
7093 O_WRONLY
|O_APPEND
|O_CREAT
|O_EXCL
, SPOOL_MODE
)) < 0)
7095 log_write(0, LOG_MAIN
|LOG_PANIC
, "Couldn't open journal file %s: %s",
7096 fname
, strerror(errno
));
7097 return DELIVER_NOT_ATTEMPTED
;
7100 /* Set the close-on-exec flag, make the file owned by Exim, and ensure
7101 that the mode is correct - the group setting doesn't always seem to get
7102 set automatically. */
7104 if( exim_fchown(journal_fd
, exim_uid
, exim_gid
, fname
)
7105 || fchmod(journal_fd
, SPOOL_MODE
)
7107 || fcntl(journal_fd
, F_SETFD
, fcntl(journal_fd
, F_GETFD
) | FD_CLOEXEC
)
7111 int ret
= Uunlink(fname
);
7112 log_write(0, LOG_MAIN
|LOG_PANIC
, "Couldn't set perms on journal file %s: %s",
7113 fname
, strerror(errno
));
7114 if(ret
&& errno
!= ENOENT
)
7115 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s",
7116 fname
, strerror(errno
));
7117 return DELIVER_NOT_ATTEMPTED
;
7121 else if (journal_fd
>= 0)
7129 /* Now we can get down to the business of actually doing deliveries. Local
7130 deliveries are done first, then remote ones. If ever the problems of how to
7131 handle fallback transports are figured out, this section can be put into a loop
7132 for handling fallbacks, though the uid switching will have to be revised. */
7134 /* Precompile a regex that is used to recognize a parameter in response
7135 to an LHLO command, if is isn't already compiled. This may be used on both
7136 local and remote LMTP deliveries. */
7138 if (!regex_IGNOREQUOTA
)
7140 regex_must_compile(US
"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE
, TRUE
);
7142 /* Handle local deliveries */
7146 DEBUG(D_deliver
|D_transport
)
7147 debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
7148 do_local_deliveries();
7149 f
.disable_logging
= FALSE
;
7152 /* If queue_run_local is set, we do not want to attempt any remote deliveries,
7153 so just queue them all. */
7155 if (f
.queue_run_local
)
7158 address_item
*addr
= addr_remote
;
7159 addr_remote
= addr
->next
;
7161 addr
->basic_errno
= ERRNO_LOCAL_ONLY
;
7162 addr
->message
= US
"remote deliveries suppressed";
7163 (void)post_process_one(addr
, DEFER
, LOG_MAIN
, EXIM_DTYPE_TRANSPORT
, 0);
7166 /* Handle remote deliveries */
7170 DEBUG(D_deliver
|D_transport
)
7171 debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
7173 /* Precompile some regex that are used to recognize parameters in response
7174 to an EHLO command, if they aren't already compiled. */
7176 smtp_deliver_init();
7178 /* Now sort the addresses if required, and do the deliveries. The yield of
7179 do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
7180 cannot be delivered in one transaction. */
7182 if (remote_sort_domains
) sort_remote_deliveries();
7183 if (!do_remote_deliveries(FALSE
))
7185 log_write(0, LOG_MAIN
, "** mua_wrapper is set but recipients cannot all "
7186 "be delivered in one transaction");
7187 fprintf(stderr
, "delivery to smarthost failed (configuration problem)\n");
7189 final_yield
= DELIVER_MUA_FAILED
;
7190 addr_failed
= addr_defer
= NULL
; /* So that we remove the message */
7191 goto DELIVERY_TIDYUP
;
7194 /* See if any of the addresses that failed got put on the queue for delivery
7195 to their fallback hosts. We do it this way because often the same fallback
7196 host is used for many domains, so all can be sent in a single transaction
7197 (if appropriately configured). */
7199 if (addr_fallback
&& !mua_wrapper
)
7201 DEBUG(D_deliver
) debug_printf("Delivering to fallback hosts\n");
7202 addr_remote
= addr_fallback
;
7203 addr_fallback
= NULL
;
7204 if (remote_sort_domains
) sort_remote_deliveries();
7205 do_remote_deliveries(TRUE
);
7207 f
.disable_logging
= FALSE
;
7211 /* All deliveries are now complete. Ignore SIGTERM during this tidying up
7212 phase, to minimize cases of half-done things. */
7215 debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
7216 cancel_cutthrough_connection(TRUE
, US
"deliveries are done");
7218 /* Root privilege is no longer needed */
7220 exim_setugid(exim_uid
, exim_gid
, FALSE
, US
"post-delivery tidying");
7222 set_process_info("tidying up after delivering %s", message_id
);
7223 signal(SIGTERM
, SIG_IGN
);
7225 /* When we are acting as an MUA wrapper, the smtp transport will either have
7226 succeeded for all addresses, or failed them all in normal cases. However, there
7227 are some setup situations (e.g. when a named port does not exist) that cause an
7228 immediate exit with deferral of all addresses. Convert those into failures. We
7229 do not ever want to retry, nor do we want to send a bounce message. */
7235 address_item
* nextaddr
;
7236 for (address_item
* addr
= addr_defer
; addr
; addr
= nextaddr
)
7238 log_write(0, LOG_MAIN
, "** %s mua_wrapper forced failure for deferred "
7239 "delivery", addr
->address
);
7240 nextaddr
= addr
->next
;
7241 addr
->next
= addr_failed
;
7247 /* Now all should either have succeeded or failed. */
7250 final_yield
= DELIVER_MUA_SUCCEEDED
;
7254 uschar
*s
= addr_failed
->user_message
;
7256 if (!s
) s
= addr_failed
->message
;
7258 fprintf(stderr
, "Delivery failed: ");
7259 if (addr_failed
->basic_errno
> 0)
7261 fprintf(stderr
, "%s", strerror(addr_failed
->basic_errno
));
7262 if (s
) fprintf(stderr
, ": ");
7264 if ((host
= addr_failed
->host_used
))
7265 fprintf(stderr
, "H=%s [%s]: ", host
->name
, host
->address
);
7267 fprintf(stderr
, "%s", CS s
);
7268 else if (addr_failed
->basic_errno
<= 0)
7269 fprintf(stderr
, "unknown error");
7270 fprintf(stderr
, "\n");
7272 final_yield
= DELIVER_MUA_FAILED
;
7277 /* In a normal configuration, we now update the retry database. This is done in
7278 one fell swoop at the end in order not to keep opening and closing (and
7279 locking) the database. The code for handling retries is hived off into a
7280 separate module for convenience. We pass it the addresses of the various
7281 chains, because deferred addresses can get moved onto the failed chain if the
7282 retry cutoff time has expired for all alternative destinations. Bypass the
7283 updating of the database if the -N flag is set, which is a debugging thing that
7284 prevents actual delivery. */
7286 else if (!f
.dont_deliver
)
7287 retry_update(&addr_defer
, &addr_failed
, &addr_succeed
);
7289 /* Send DSN for successful messages if requested */
7290 addr_senddsn
= NULL
;
7292 for (address_item
* a
= addr_succeed
; a
; a
= a
->next
)
7294 /* af_ignore_error not honored here. it's not an error */
7295 DEBUG(D_deliver
) debug_printf("DSN: processing router : %s\n"
7296 "DSN: processing successful delivery address: %s\n"
7297 "DSN: Sender_address: %s\n"
7298 "DSN: orcpt: %s flags: 0x%x\n"
7299 "DSN: envid: %s ret: %d\n"
7300 "DSN: Final recipient: %s\n"
7301 "DSN: Remote SMTP server supports DSN: %d\n",
7302 a
->router
? a
->router
->name
: US
"(unknown)",
7305 a
->dsn_orcpt
? a
->dsn_orcpt
: US
"NULL",
7307 dsn_envid
? dsn_envid
: US
"NULL", dsn_ret
,
7312 /* send report if next hop not DSN aware or a router flagged "last DSN hop"
7313 and a report was requested */
7315 if ( (a
->dsn_aware
!= dsn_support_yes
|| a
->dsn_flags
& rf_dsnlasthop
)
7316 && a
->dsn_flags
& rf_notify_success
7319 /* copy and relink address_item and send report with all of them at once later */
7320 address_item
* addr_next
= addr_senddsn
;
7321 addr_senddsn
= store_get(sizeof(address_item
), FALSE
);
7323 addr_senddsn
->next
= addr_next
;
7326 DEBUG(D_deliver
) debug_printf("DSN: not sending DSN success message\n");
7334 /* create exim process to send message */
7335 pid
= child_open_exim(&fd
);
7337 DEBUG(D_deliver
) debug_printf("DSN: child_open_exim returns: %d\n", pid
);
7339 if (pid
< 0) /* Creation of child failed */
7341 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Process %d (parent %d) failed to "
7342 "create child process to send success-dsn message: %s", getpid(),
7343 getppid(), strerror(errno
));
7345 DEBUG(D_deliver
) debug_printf("DSN: child_open_exim failed\n");
7347 else /* Creation of child succeeded */
7349 FILE * f
= fdopen(fd
, "wb");
7350 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
7352 transport_ctx tctx
= {{0}};
7355 debug_printf("sending success-dsn to: %s\n", sender_address
);
7357 /* build unique id for MIME boundary */
7358 bound
= string_sprintf(TIME_T_FMT
"-eximdsn-%d", time(NULL
), rand());
7359 DEBUG(D_deliver
) debug_printf("DSN: MIME boundary: %s\n", bound
);
7361 if (errors_reply_to
)
7362 fprintf(f
, "Reply-To: %s\n", errors_reply_to
);
7365 fprintf(f
, "Auto-Submitted: auto-generated\n"
7367 "Subject: Delivery Status Notification\n",
7369 moan_write_references(f
, NULL
);
7370 fprintf(f
, "Content-Type: multipart/report;"
7371 " report-type=delivery-status; boundary=%s\n"
7372 "MIME-Version: 1.0\n\n"
7375 "Content-type: text/plain; charset=us-ascii\n\n"
7377 "This message was created automatically by mail delivery software.\n"
7378 " ----- The following addresses had successful delivery notifications -----\n",
7381 for (address_item
* a
= addr_senddsn
; a
; a
= a
->next
)
7382 fprintf(f
, "<%s> (relayed %s)\n\n",
7384 a
->dsn_flags
& rf_dsnlasthop
? "via non DSN router"
7385 : a
->dsn_aware
== dsn_support_no
? "to non-DSN-aware mailer"
7386 : "via non \"Remote SMTP\" router"
7390 "Content-type: message/delivery-status\n\n"
7391 "Reporting-MTA: dns; %s\n",
7392 bound
, smtp_active_hostname
);
7395 { /* must be decoded from xtext: see RFC 3461:6.3a */
7397 if (auth_xtextdecode(dsn_envid
, &xdec_envid
) > 0)
7398 fprintf(f
, "Original-Envelope-ID: %s\n", dsn_envid
);
7400 fprintf(f
, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
7404 for (address_item
* a
= addr_senddsn
; a
; a
= a
->next
)
7408 print_dsn_addr_action(f
, a
, US
"delivered", US
"2.0.0");
7410 if ((hu
= a
->host_used
) && hu
->name
)
7411 fprintf(f
, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n",
7414 fprintf(f
, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n",
7415 a
->dsn_flags
& rf_dsnlasthop
? "DSN" : "SMTP");
7418 fprintf(f
, "--%s\nContent-type: text/rfc822-headers\n\n", bound
);
7421 transport_filter_argv
= NULL
; /* Just in case */
7422 return_path
= sender_address
; /* In case not previously set */
7424 /* Write the original email out */
7427 tctx
.options
= topt_add_return_path
| topt_no_body
;
7428 /*XXX hmm, FALSE(fail) retval ignored.
7429 Could error for any number of reasons, and they are not handled. */
7430 transport_write_message(&tctx
, 0);
7433 fprintf(f
,"\n--%s--\n", bound
);
7437 rc
= child_close(pid
, 0); /* Waits for child to close, no timeout */
7441 /* If any addresses failed, we must send a message to somebody, unless
7442 af_ignore_error is set, in which case no action is taken. It is possible for
7443 several messages to get sent if there are addresses with different
7450 uschar
*logtod
= tod_stamp(tod_log
);
7452 address_item
*handled_addr
= NULL
;
7453 address_item
**paddr
;
7454 address_item
*msgchain
= NULL
;
7455 address_item
**pmsgchain
= &msgchain
;
7457 /* There are weird cases when logging is disabled in the transport. However,
7458 there may not be a transport (address failed by a router). */
7460 f
.disable_logging
= FALSE
;
7461 if (addr_failed
->transport
)
7462 f
.disable_logging
= addr_failed
->transport
->disable_logging
;
7465 debug_printf("processing failed address %s\n", addr_failed
->address
);
7467 /* There are only two ways an address in a bounce message can get here:
7469 (1) When delivery was initially deferred, but has now timed out (in the call
7470 to retry_update() above). We can detect this by testing for
7471 af_retry_timedout. If the address does not have its own errors address,
7472 we arrange to ignore the error.
7474 (2) If delivery failures for bounce messages are being ignored. We can detect
7475 this by testing for af_ignore_error. This will also be set if a bounce
7476 message has been autothawed and the ignore_bounce_errors_after time has
7477 passed. It might also be set if a router was explicitly configured to
7478 ignore errors (errors_to = "").
7480 If neither of these cases obtains, something has gone wrong. Log the
7481 incident, but then ignore the error. */
7483 if (sender_address
[0] == 0 && !addr_failed
->prop
.errors_address
)
7485 if ( !testflag(addr_failed
, af_retry_timedout
)
7486 && !addr_failed
->prop
.ignore_error
)
7487 log_write(0, LOG_MAIN
|LOG_PANIC
, "internal error: bounce message "
7488 "failure is neither frozen nor ignored (it's been ignored)");
7490 addr_failed
->prop
.ignore_error
= TRUE
;
7493 /* If the first address on the list has af_ignore_error set, just remove
7494 it from the list, throw away any saved message file, log it, and
7495 mark the recipient done. */
7497 if ( addr_failed
->prop
.ignore_error
7498 || addr_failed
->dsn_flags
& rf_dsnflags
7499 && !(addr_failed
->dsn_flags
& rf_notify_failure
)
7503 addr_failed
= addr
->next
;
7504 if (addr
->return_filename
) Uunlink(addr
->return_filename
);
7506 #ifndef DISABLE_EVENT
7507 msg_event_raise(US
"msg:fail:delivery", addr
);
7509 log_write(0, LOG_MAIN
, "%s%s%s%s: error ignored%s",
7511 !addr
->parent
? US
"" : US
" <",
7512 !addr
->parent
? US
"" : addr
->parent
->address
,
7513 !addr
->parent
? US
"" : US
">",
7514 addr
->prop
.ignore_error
7515 ? US
"" : US
": RFC 3461 DSN, failure notify not requested");
7517 address_done(addr
, logtod
);
7518 child_done(addr
, logtod
);
7519 /* Panic-dies on error */
7520 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
7523 /* Otherwise, handle the sending of a message. Find the error address for
7524 the first address, then send a message that includes all failed addresses
7525 that have the same error address. Note the bounce_recipient is a global so
7526 that it can be accessed by $bounce_recipient while creating a customized
7531 if (!(bounce_recipient
= addr_failed
->prop
.errors_address
))
7532 bounce_recipient
= sender_address
;
7534 /* Make a subprocess to send a message */
7536 if ((pid
= child_open_exim(&fd
)) < 0)
7537 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Process %d (parent %d) failed to "
7538 "create child process to send failure message: %s", getpid(),
7539 getppid(), strerror(errno
));
7541 /* Creation of child succeeded */
7548 uschar
*bcc
, *emf_text
;
7549 FILE * fp
= fdopen(fd
, "wb");
7551 BOOL to_sender
= strcmpic(sender_address
, bounce_recipient
) == 0;
7552 int max
= (bounce_return_size_limit
/DELIVER_IN_BUFFER_SIZE
+ 1) *
7553 DELIVER_IN_BUFFER_SIZE
;
7555 uschar
*dsnlimitmsg
;
7556 uschar
*dsnnotifyhdr
;
7560 debug_printf("sending error message to: %s\n", bounce_recipient
);
7562 /* Scan the addresses for all that have the same errors address, removing
7563 them from the addr_failed chain, and putting them on msgchain. */
7565 paddr
= &addr_failed
;
7566 for (addr
= addr_failed
; addr
; addr
= *paddr
)
7567 if (Ustrcmp(bounce_recipient
, addr
->prop
.errors_address
7568 ? addr
->prop
.errors_address
: sender_address
) == 0)
7569 { /* The same - dechain */
7570 *paddr
= addr
->next
;
7573 pmsgchain
= &(addr
->next
);
7576 paddr
= &addr
->next
; /* Not the same; skip */
7578 /* Include X-Failed-Recipients: for automatic interpretation, but do
7579 not let any one header line get too long. We do this by starting a
7580 new header every 50 recipients. Omit any addresses for which the
7581 "hide_child" flag is set. */
7583 for (addr
= msgchain
; addr
; addr
= addr
->next
)
7585 if (testflag(addr
, af_hide_child
)) continue;
7593 ? "X-Failed-Recipients: "
7595 testflag(addr
, af_pfr
) && addr
->parent
7596 ? string_printing(addr
->parent
->address
)
7597 : string_printing(addr
->address
));
7599 if (rcount
> 0) fprintf(fp
, "\n");
7601 /* Output the standard headers */
7603 if (errors_reply_to
)
7604 fprintf(fp
, "Reply-To: %s\n", errors_reply_to
);
7605 fprintf(fp
, "Auto-Submitted: auto-replied\n");
7606 moan_write_from(fp
);
7607 fprintf(fp
, "To: %s\n", bounce_recipient
);
7608 moan_write_references(fp
, NULL
);
7610 /* generate boundary string and output MIME-Headers */
7611 bound
= string_sprintf(TIME_T_FMT
"-eximdsn-%d", time(NULL
), rand());
7613 fprintf(fp
, "Content-Type: multipart/report;"
7614 " report-type=delivery-status; boundary=%s\n"
7615 "MIME-Version: 1.0\n",
7618 /* Open a template file if one is provided. Log failure to open, but
7619 carry on - default texts will be used. */
7621 if (bounce_message_file
)
7622 if (!(emf
= Ufopen(bounce_message_file
, "rb")))
7623 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to open %s for error "
7624 "message texts: %s", bounce_message_file
, strerror(errno
));
7626 /* Quietly copy to configured additional addresses if required. */
7628 if ((bcc
= moan_check_errorcopy(bounce_recipient
)))
7629 fprintf(fp
, "Bcc: %s\n", bcc
);
7631 /* The texts for the message can be read from a template file; if there
7632 isn't one, or if it is too short, built-in texts are used. The first
7633 emf text is a Subject: and any other headers. */
7635 if ((emf_text
= next_emf(emf
, US
"header")))
7636 fprintf(fp
, "%s\n", emf_text
);
7638 fprintf(fp
, "Subject: Mail delivery failed%s\n\n",
7639 to_sender
? ": returning message to sender" : "");
7641 /* output human readable part as text/plain section */
7642 fprintf(fp
, "--%s\n"
7643 "Content-type: text/plain; charset=us-ascii\n\n",
7646 if ((emf_text
= next_emf(emf
, US
"intro")))
7647 fprintf(fp
, "%s", CS emf_text
);
7651 /* This message has been reworded several times. It seems to be confusing to
7652 somebody, however it is worded. I have retreated to the original, simple
7654 "This message was created automatically by mail delivery software.\n");
7656 if (bounce_message_text
)
7657 fprintf(fp
, "%s", CS bounce_message_text
);
7660 "\nA message that you sent could not be delivered to one or more of its\n"
7661 "recipients. This is a permanent error. The following address(es) failed:\n");
7664 "\nA message sent by\n\n <%s>\n\n"
7665 "could not be delivered to one or more of its recipients. The following\n"
7666 "address(es) failed:\n", sender_address
);
7670 /* Process the addresses, leaving them on the msgchain if they have a
7671 file name for a return message. (There has already been a check in
7672 post_process_one() for the existence of data in the message file.) A TRUE
7673 return from print_address_information() means that the address is not
7677 for (addr
= msgchain
; addr
; addr
= *paddr
)
7679 if (print_address_information(addr
, fp
, US
" ", US
"\n ", US
""))
7680 print_address_error(addr
, fp
, US
"");
7682 /* End the final line for the address */
7686 /* Leave on msgchain if there's a return file. */
7688 if (addr
->return_file
>= 0)
7690 paddr
= &(addr
->next
);
7694 /* Else save so that we can tick off the recipient when the
7699 *paddr
= addr
->next
;
7700 addr
->next
= handled_addr
;
7701 handled_addr
= addr
;
7707 /* Get the next text, whether we need it or not, so as to be
7708 positioned for the one after. */
7710 emf_text
= next_emf(emf
, US
"generated text");
7712 /* If there were any file messages passed by the local transports,
7713 include them in the message. Then put the address on the handled chain.
7714 In the case of a batch of addresses that were all sent to the same
7715 transport, the return_file field in all of them will contain the same
7716 fd, and the return_filename field in the *last* one will be set (to the
7717 name of the file). */
7721 address_item
*nextaddr
;
7724 fprintf(fp
, "%s", CS emf_text
);
7727 "The following text was generated during the delivery "
7728 "attempt%s:\n", (filecount
> 1)? "s" : "");
7730 for (addr
= msgchain
; addr
; addr
= nextaddr
)
7733 address_item
*topaddr
= addr
;
7735 /* List all the addresses that relate to this file */
7738 while(addr
) /* Insurance */
7740 print_address_information(addr
, fp
, US
"------ ", US
"\n ",
7742 if (addr
->return_filename
) break;
7747 /* Now copy the file */
7749 if (!(fm
= Ufopen(addr
->return_filename
, "rb")))
7750 fprintf(fp
, " +++ Exim error... failed to open text file: %s\n",
7754 while ((ch
= fgetc(fm
)) != EOF
) fputc(ch
, fp
);
7757 Uunlink(addr
->return_filename
);
7759 /* Can now add to handled chain, first fishing off the next
7760 address on the msgchain. */
7762 nextaddr
= addr
->next
;
7763 addr
->next
= handled_addr
;
7764 handled_addr
= topaddr
;
7769 /* output machine readable part */
7771 if (message_smtputf8
)
7772 fprintf(fp
, "--%s\n"
7773 "Content-type: message/global-delivery-status\n\n"
7774 "Reporting-MTA: dns; %s\n",
7775 bound
, smtp_active_hostname
);
7778 fprintf(fp
, "--%s\n"
7779 "Content-type: message/delivery-status\n\n"
7780 "Reporting-MTA: dns; %s\n",
7781 bound
, smtp_active_hostname
);
7785 /* must be decoded from xtext: see RFC 3461:6.3a */
7787 if (auth_xtextdecode(dsn_envid
, &xdec_envid
) > 0)
7788 fprintf(fp
, "Original-Envelope-ID: %s\n", dsn_envid
);
7790 fprintf(fp
, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
7794 for (addr
= handled_addr
; addr
; addr
= addr
->next
)
7798 print_dsn_addr_action(fp
, addr
, US
"failed", US
"5.0.0");
7800 if ((hu
= addr
->host_used
) && hu
->name
)
7802 fprintf(fp
, "Remote-MTA: dns; %s\n", hu
->name
);
7803 #ifdef EXPERIMENTAL_DSN_INFO
7808 uschar
* p
= hu
->port
== 25
7809 ? US
"" : string_sprintf(":%d", hu
->port
);
7810 fprintf(fp
, "Remote-MTA: X-ip; [%s]%s\n", hu
->address
, p
);
7812 if ((s
= addr
->smtp_greeting
) && *s
)
7813 fprintf(fp
, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s
);
7814 if ((s
= addr
->helo_response
) && *s
)
7815 fprintf(fp
, "X-Remote-MTA-helo-response: X-str; %s\n", s
);
7816 if ((s
= addr
->message
) && *s
)
7817 fprintf(fp
, "X-Exim-Diagnostic: X-str; %s\n", s
);
7820 print_dsn_diagnostic_code(addr
, fp
);
7825 /* Now copy the message, trying to give an intelligible comment if
7826 it is too long for it all to be copied. The limit isn't strictly
7827 applied because of the buffering. There is, however, an option
7828 to suppress copying altogether. */
7830 emf_text
= next_emf(emf
, US
"copy");
7833 we ignore the intro text from template and add
7834 the text for bounce_return_size_limit at the end.
7836 bounce_return_message is ignored
7837 in case RET= is defined we honor these values
7838 otherwise bounce_return_body is honored.
7840 bounce_return_size_limit is always honored.
7843 fprintf(fp
, "--%s\n", bound
);
7845 dsnlimitmsg
= US
"X-Exim-DSN-Information: Due to administrative limits only headers are returned";
7846 dsnnotifyhdr
= NULL
;
7847 topt
= topt_add_return_path
;
7849 /* RET=HDRS? top priority */
7850 if (dsn_ret
== dsn_ret_hdrs
)
7851 topt
|= topt_no_body
;
7854 struct stat statbuf
;
7856 /* no full body return at all? */
7857 if (!bounce_return_body
)
7859 topt
|= topt_no_body
;
7860 /* add header if we overrule RET=FULL */
7861 if (dsn_ret
== dsn_ret_full
)
7862 dsnnotifyhdr
= dsnlimitmsg
;
7864 /* line length limited... return headers only if oversize */
7865 /* size limited ... return headers only if limit reached */
7866 else if ( max_received_linelength
> bounce_return_linesize_limit
7867 || ( bounce_return_size_limit
> 0
7868 && fstat(deliver_datafile
, &statbuf
) == 0
7869 && statbuf
.st_size
> max
7872 topt
|= topt_no_body
;
7873 dsnnotifyhdr
= dsnlimitmsg
;
7878 if (message_smtputf8
)
7879 fputs(topt
& topt_no_body
? "Content-type: message/global-headers\n\n"
7880 : "Content-type: message/global\n\n",
7884 fputs(topt
& topt_no_body
? "Content-type: text/rfc822-headers\n\n"
7885 : "Content-type: message/rfc822\n\n",
7889 transport_filter_argv
= NULL
; /* Just in case */
7890 return_path
= sender_address
; /* In case not previously set */
7891 { /* Dummy transport for headers add */
7892 transport_ctx tctx
= {{0}};
7893 transport_instance tb
= {0};
7895 tctx
.u
.fd
= fileno(fp
);
7897 tctx
.options
= topt
;
7898 tb
.add_headers
= dsnnotifyhdr
;
7900 /*XXX no checking for failure! buggy! */
7901 transport_write_message(&tctx
, 0);
7905 /* we never add the final text. close the file */
7909 fprintf(fp
, "\n--%s--\n", bound
);
7911 /* Close the file, which should send an EOF to the child process
7912 that is receiving the message. Wait for it to finish. */
7915 rc
= child_close(pid
, 0); /* Waits for child to close, no timeout */
7917 /* In the test harness, let the child do it's thing first. */
7919 testharness_pause_ms(500);
7921 /* If the process failed, there was some disaster in setting up the
7922 error message. Unless the message is very old, ensure that addr_defer
7923 is non-null, which will have the effect of leaving the message on the
7924 spool. The failed addresses will get tried again next time. However, we
7925 don't really want this to happen too often, so freeze the message unless
7926 there are some genuine deferred addresses to try. To do this we have
7927 to call spool_write_header() here, because with no genuine deferred
7928 addresses the normal code below doesn't get run. */
7933 if (now
- received_time
.tv_sec
< retry_maximum_timeout
&& !addr_defer
)
7935 addr_defer
= (address_item
*)(+1);
7936 f
.deliver_freeze
= TRUE
;
7937 deliver_frozen_at
= time(NULL
);
7938 /* Panic-dies on error */
7939 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
7942 deliver_msglog("Process failed (%d) when writing error message "
7943 "to %s%s", rc
, bounce_recipient
, s
);
7944 log_write(0, LOG_MAIN
, "Process failed (%d) when writing error message "
7945 "to %s%s", rc
, bounce_recipient
, s
);
7948 /* The message succeeded. Ensure that the recipients that failed are
7949 now marked finished with on the spool and their parents updated. */
7953 for (addr
= handled_addr
; addr
; addr
= addr
->next
)
7955 address_done(addr
, logtod
);
7956 child_done(addr
, logtod
);
7958 /* Panic-dies on error */
7959 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
7965 f
.disable_logging
= FALSE
; /* In case left set */
7967 /* Come here from the mua_wrapper case if routing goes wrong */
7971 /* If there are now no deferred addresses, we are done. Preserve the
7972 message log if so configured, and we are using them. Otherwise, sling it.
7973 Then delete the message itself. */
7981 fname
= spool_fname(US
"msglog", message_subdir
, id
, US
"");
7982 if (preserve_message_logs
)
7985 uschar
* moname
= spool_fname(US
"msglog.OLD", US
"", id
, US
"");
7987 if ((rc
= Urename(fname
, moname
)) < 0)
7989 (void)directory_make(spool_directory
,
7990 spool_sname(US
"msglog.OLD", US
""),
7991 MSGLOG_DIRECTORY_MODE
, TRUE
);
7992 rc
= Urename(fname
, moname
);
7995 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to move %s to the "
7996 "msglog.OLD directory", fname
);
7999 if (Uunlink(fname
) < 0)
8000 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s",
8001 fname
, strerror(errno
));
8004 /* Remove the two message files. */
8006 fname
= spool_fname(US
"input", message_subdir
, id
, US
"-D");
8007 if (Uunlink(fname
) < 0)
8008 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s",
8009 fname
, strerror(errno
));
8010 fname
= spool_fname(US
"input", message_subdir
, id
, US
"-H");
8011 if (Uunlink(fname
) < 0)
8012 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s",
8013 fname
, strerror(errno
));
8015 /* Log the end of this message, with queue time if requested. */
8017 if (LOGGING(queue_time_overall
))
8018 log_write(0, LOG_MAIN
, "Completed QT=%s", string_timesince(&received_time
));
8020 log_write(0, LOG_MAIN
, "Completed");
8022 /* Unset deliver_freeze so that we won't try to move the spool files further down */
8023 f
.deliver_freeze
= FALSE
;
8025 #ifndef DISABLE_EVENT
8026 (void) event_raise(event_action
, US
"msg:complete", NULL
);
8030 /* If there are deferred addresses, we are keeping this message because it is
8031 not yet completed. Lose any temporary files that were catching output from
8032 pipes for any of the deferred addresses, handle one-time aliases, and see if
8033 the message has been on the queue for so long that it is time to send a warning
8034 message to the sender, unless it is a mailer-daemon. If all deferred addresses
8035 have the same domain, we can set deliver_domain for the expansion of
8036 delay_warning_ condition - if any of them are pipes, files, or autoreplies, use
8037 the parent's domain.
8039 If all the deferred addresses have an error number that indicates "retry time
8040 not reached", skip sending the warning message, because it won't contain the
8041 reason for the delay. It will get sent at the next real delivery attempt.
8042 Exception: for retries caused by a remote peer we use the error message
8043 store in the retry DB as the reason.
8044 However, if at least one address has tried, we'd better include all of them in
8047 If we can't make a process to send the message, don't worry.
8049 For mailing list expansions we want to send the warning message to the
8050 mailing list manager. We can't do a perfect job here, as some addresses may
8051 have different errors addresses, but if we take the errors address from
8052 each deferred address it will probably be right in most cases.
8054 If addr_defer == +1, it means there was a problem sending an error message
8055 for failed addresses, and there were no "real" deferred addresses. The value
8056 was set just to keep the message on the spool, so there is nothing to do here.
8059 else if (addr_defer
!= (address_item
*)(+1))
8061 uschar
*recipients
= US
"";
8062 BOOL want_warning_msg
= FALSE
;
8064 deliver_domain
= testflag(addr_defer
, af_pfr
)
8065 ? addr_defer
->parent
->domain
: addr_defer
->domain
;
8067 for (address_item
* addr
= addr_defer
; addr
; addr
= addr
->next
)
8069 address_item
*otaddr
;
8071 if (addr
->basic_errno
> ERRNO_WARN_BASE
) want_warning_msg
= TRUE
;
8075 const uschar
*d
= testflag(addr
, af_pfr
)
8076 ? addr
->parent
->domain
: addr
->domain
;
8078 /* The domain may be unset for an address that has never been routed
8079 because the system filter froze the message. */
8081 if (!d
|| Ustrcmp(d
, deliver_domain
) != 0)
8082 deliver_domain
= NULL
;
8085 if (addr
->return_filename
) Uunlink(addr
->return_filename
);
8087 /* Handle the case of one-time aliases. If any address in the ancestry
8088 of this one is flagged, ensure it is in the recipients list, suitably
8089 flagged, and that its parent is marked delivered. */
8091 for (otaddr
= addr
; otaddr
; otaddr
= otaddr
->parent
)
8092 if (otaddr
->onetime_parent
) break;
8097 int t
= recipients_count
;
8099 for (i
= 0; i
< recipients_count
; i
++)
8101 uschar
*r
= recipients_list
[i
].address
;
8102 if (Ustrcmp(otaddr
->onetime_parent
, r
) == 0) t
= i
;
8103 if (Ustrcmp(otaddr
->address
, r
) == 0) break;
8106 /* Didn't find the address already in the list, and did find the
8107 ultimate parent's address in the list, and they really are different
8108 (i.e. not from an identity-redirect). After adding the recipient,
8109 update the errors address in the recipients list. */
8111 if ( i
>= recipients_count
&& t
< recipients_count
8112 && Ustrcmp(otaddr
->address
, otaddr
->parent
->address
) != 0)
8114 DEBUG(D_deliver
) debug_printf("one_time: adding %s in place of %s\n",
8115 otaddr
->address
, otaddr
->parent
->address
);
8116 receive_add_recipient(otaddr
->address
, t
);
8117 recipients_list
[recipients_count
-1].errors_to
= otaddr
->prop
.errors_address
;
8118 tree_add_nonrecipient(otaddr
->parent
->address
);
8119 update_spool
= TRUE
;
8123 /* Except for error messages, ensure that either the errors address for
8124 this deferred address or, if there is none, the sender address, is on the
8125 list of recipients for a warning message. */
8127 if (sender_address
[0])
8129 uschar
* s
= addr
->prop
.errors_address
;
8130 if (!s
) s
= sender_address
;
8131 if (Ustrstr(recipients
, s
) == NULL
)
8132 recipients
= string_sprintf("%s%s%s", recipients
,
8133 recipients
[0] ? "," : "", s
);
8137 /* Send a warning message if the conditions are right. If the condition check
8138 fails because of a lookup defer, there is nothing we can do. The warning
8139 is not sent. Another attempt will be made at the next delivery attempt (if
8142 if ( !f
.queue_2stage
8144 && ( !(addr_defer
->dsn_flags
& rf_dsnflags
)
8145 || addr_defer
->dsn_flags
& rf_notify_delay
8147 && delay_warning
[1] > 0
8148 && sender_address
[0] != 0
8149 && ( !delay_warning_condition
8150 || expand_check_condition(delay_warning_condition
,
8151 US
"delay_warning", US
"option")
8157 int queue_time
= time(NULL
) - received_time
.tv_sec
;
8159 queue_time
= test_harness_fudged_queue_time(queue_time
);
8161 /* See how many warnings we should have sent by now */
8163 for (count
= 0; count
< delay_warning
[1]; count
++)
8164 if (queue_time
< delay_warning
[count
+2]) break;
8166 show_time
= delay_warning
[count
+1];
8168 if (count
>= delay_warning
[1])
8171 int last_gap
= show_time
;
8172 if (count
> 1) last_gap
-= delay_warning
[count
];
8173 extra
= (queue_time
- delay_warning
[count
+1])/last_gap
;
8174 show_time
+= last_gap
* extra
;
8180 debug_printf("time on queue = %s id %s addr %s\n",
8181 readconf_printtime(queue_time
), message_id
, addr_defer
->address
);
8182 debug_printf("warning counts: required %d done %d\n", count
,
8186 /* We have computed the number of warnings there should have been by now.
8187 If there haven't been enough, send one, and up the count to what it should
8190 if (warning_count
< count
)
8194 pid_t pid
= child_open_exim(&fd
);
8200 FILE *f
= fdopen(fd
, "wb");
8202 transport_ctx tctx
= {{0}};
8204 if (warn_message_file
)
8205 if (!(wmf
= Ufopen(warn_message_file
, "rb")))
8206 log_write(0, LOG_MAIN
|LOG_PANIC
, "Failed to open %s for warning "
8207 "message texts: %s", warn_message_file
, strerror(errno
));
8209 warnmsg_recipients
= recipients
;
8210 warnmsg_delay
= queue_time
< 120*60
8211 ? string_sprintf("%d minutes", show_time
/60)
8212 : string_sprintf("%d hours", show_time
/3600);
8214 if (errors_reply_to
)
8215 fprintf(f
, "Reply-To: %s\n", errors_reply_to
);
8216 fprintf(f
, "Auto-Submitted: auto-replied\n");
8218 fprintf(f
, "To: %s\n", recipients
);
8219 moan_write_references(f
, NULL
);
8221 /* generated boundary string and output MIME-Headers */
8222 bound
= string_sprintf(TIME_T_FMT
"-eximdsn-%d", time(NULL
), rand());
8224 fprintf(f
, "Content-Type: multipart/report;"
8225 " report-type=delivery-status; boundary=%s\n"
8226 "MIME-Version: 1.0\n",
8229 if ((wmf_text
= next_emf(wmf
, US
"header")))
8230 fprintf(f
, "%s\n", wmf_text
);
8232 fprintf(f
, "Subject: Warning: message %s delayed %s\n\n",
8233 message_id
, warnmsg_delay
);
8235 /* output human readable part as text/plain section */
8237 "Content-type: text/plain; charset=us-ascii\n\n",
8240 if ((wmf_text
= next_emf(wmf
, US
"intro")))
8241 fprintf(f
, "%s", CS wmf_text
);
8245 "This message was created automatically by mail delivery software.\n");
8247 if (Ustrcmp(recipients
, sender_address
) == 0)
8249 "A message that you sent has not yet been delivered to one or more of its\n"
8250 "recipients after more than ");
8254 "A message sent by\n\n <%s>\n\n"
8255 "has not yet been delivered to one or more of its recipients after more than \n",
8258 fprintf(f
, "%s on the queue on %s.\n\n"
8259 "The message identifier is: %s\n",
8260 warnmsg_delay
, primary_hostname
, message_id
);
8262 for (h
= header_list
; h
; h
= h
->next
)
8263 if (strncmpic(h
->text
, US
"Subject:", 8) == 0)
8264 fprintf(f
, "The subject of the message is: %s", h
->text
+ 9);
8265 else if (strncmpic(h
->text
, US
"Date:", 5) == 0)
8266 fprintf(f
, "The date of the message is: %s", h
->text
+ 6);
8269 fprintf(f
, "The address%s to which the message has not yet been "
8271 !addr_defer
->next
? "" : "es",
8272 !addr_defer
->next
? "is": "are");
8275 /* List the addresses, with error information if allowed */
8278 for (address_item
* addr
= addr_defer
; addr
; addr
= addr
->next
)
8280 if (print_address_information(addr
, f
, US
" ", US
"\n ", US
""))
8281 print_address_error(addr
, f
, US
"Delay reason: ");
8290 if ((wmf_text
= next_emf(wmf
, US
"final")))
8291 fprintf(f
, "%s", CS wmf_text
);
8297 "No action is required on your part. Delivery attempts will continue for\n"
8298 "some time, and this warning may be repeated at intervals if the message\n"
8299 "remains undelivered. Eventually the mail delivery software will give up,\n"
8300 "and when that happens, the message will be returned to you.\n");
8303 /* output machine readable part */
8304 fprintf(f
, "\n--%s\n"
8305 "Content-type: message/delivery-status\n\n"
8306 "Reporting-MTA: dns; %s\n",
8308 smtp_active_hostname
);
8313 /* must be decoded from xtext: see RFC 3461:6.3a */
8315 if (auth_xtextdecode(dsn_envid
, &xdec_envid
) > 0)
8316 fprintf(f
,"Original-Envelope-ID: %s\n", dsn_envid
);
8318 fprintf(f
,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
8322 for (address_item
* addr
= addr_defer
; addr
; addr
= addr
->next
)
8326 print_dsn_addr_action(f
, addr
, US
"delayed", US
"4.0.0");
8328 if ((hu
= addr
->host_used
) && hu
->name
)
8330 fprintf(f
, "Remote-MTA: dns; %s\n", hu
->name
);
8331 print_dsn_diagnostic_code(addr
, f
);
8337 "Content-type: text/rfc822-headers\n\n",
8341 /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
8342 tctx
.u
.fd
= fileno(f
);
8343 tctx
.options
= topt_add_return_path
| topt_no_body
;
8344 transport_filter_argv
= NULL
; /* Just in case */
8345 return_path
= sender_address
; /* In case not previously set */
8347 /* Write the original email out */
8348 /*XXX no checking for failure! buggy! */
8349 transport_write_message(&tctx
, 0);
8352 fprintf(f
,"\n--%s--\n", bound
);
8356 /* Close and wait for child process to complete, without a timeout.
8357 If there's an error, don't update the count. */
8360 if (child_close(pid
, 0) == 0)
8362 warning_count
= count
;
8363 update_spool
= TRUE
; /* Ensure spool rewritten */
8369 /* Clear deliver_domain */
8371 deliver_domain
= NULL
;
8373 /* If this was a first delivery attempt, unset the first time flag, and
8374 ensure that the spool gets updated. */
8376 if (f
.deliver_firsttime
)
8378 f
.deliver_firsttime
= FALSE
;
8379 update_spool
= TRUE
;
8382 /* If delivery was frozen and freeze_tell is set, generate an appropriate
8383 message, unless the message is a local error message (to avoid loops). Then
8384 log the freezing. If the text in "frozen_info" came from a system filter,
8385 it has been escaped into printing characters so as not to mess up log lines.
8386 For the "tell" message, we turn \n back into newline. Also, insert a newline
8387 near the start instead of the ": " string. */
8389 if (f
.deliver_freeze
)
8391 if (freeze_tell
&& freeze_tell
[0] != 0 && !f
.local_error_message
)
8393 uschar
*s
= string_copy(frozen_info
);
8394 uschar
*ss
= Ustrstr(s
, " by the system filter: ");
8405 if (*ss
== '\\' && ss
[1] == 'n')
8412 moan_tell_someone(freeze_tell
, addr_defer
, US
"Message frozen",
8413 "Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id
,
8417 /* Log freezing just before we update the -H file, to minimize the chance
8418 of a race problem. */
8420 deliver_msglog("*** Frozen%s\n", frozen_info
);
8421 log_write(0, LOG_MAIN
, "Frozen%s", frozen_info
);
8424 /* If there have been any updates to the non-recipients list, or other things
8425 that get written to the spool, we must now update the spool header file so
8426 that it has the right information for the next delivery attempt. If there
8427 was more than one address being delivered, the header_change update is done
8428 earlier, in case one succeeds and then something crashes. */
8431 debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n",
8432 update_spool
, f
.header_rewritten
);
8434 if (update_spool
|| f
.header_rewritten
)
8435 /* Panic-dies on error */
8436 (void)spool_write_header(message_id
, SW_DELIVERING
, NULL
);
8439 /* Finished with the message log. If the message is complete, it will have
8440 been unlinked or renamed above. */
8442 if (message_logs
) (void)fclose(message_log
);
8444 /* Now we can close and remove the journal file. Its only purpose is to record
8445 successfully completed deliveries asap so that this information doesn't get
8446 lost if Exim (or the machine) crashes. Forgetting about a failed delivery is
8447 not serious, as trying it again is not harmful. The journal might not be open
8448 if all addresses were deferred at routing or directing. Nevertheless, we must
8449 remove it if it exists (may have been lying around from a crash during the
8450 previous delivery attempt). We don't remove the journal if a delivery
8451 subprocess failed to pass back delivery information; this is controlled by
8452 the remove_journal flag. When the journal is left, we also don't move the
8453 message off the main spool if frozen and the option is set. It should get moved
8454 at the next attempt, after the journal has been inspected. */
8456 if (journal_fd
>= 0) (void)close(journal_fd
);
8460 uschar
* fname
= spool_fname(US
"input", message_subdir
, id
, US
"-J");
8462 if (Uunlink(fname
) < 0 && errno
!= ENOENT
)
8463 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to unlink %s: %s", fname
,
8466 /* Move the message off the spool if requested */
8468 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
8469 if (f
.deliver_freeze
&& move_frozen_messages
)
8470 (void)spool_move_message(id
, message_subdir
, US
"", US
"F");
8474 /* Closing the data file frees the lock; if the file has been unlinked it
8475 will go away. Otherwise the message becomes available for another process
8478 (void)close(deliver_datafile
);
8479 deliver_datafile
= -1;
8480 DEBUG(D_deliver
) debug_printf("end delivery of %s\n", id
);
8481 #ifdef MEASURE_TIMING
8482 report_time_since(×tamp_startup
, US
"delivery end"); /* testcase 0005 */
8485 /* It is unlikely that there will be any cached resources, since they are
8486 released after routing, and in the delivery subprocesses. However, it's
8487 possible for an expansion for something afterwards (for example,
8488 expand_check_condition) to do a lookup. We must therefore be sure everything is
8492 acl_where
= ACL_WHERE_UNKNOWN
;
8501 #ifdef EXIM_TFO_PROBE
8504 f
.tcp_fastopen_ok
= TRUE
;
8510 deliver_get_sender_address (uschar
* id
)
8513 uschar
* new_sender_address
,
8514 * save_sender_address
;
8515 BOOL save_qr
= f
.queue_running
;
8518 /* make spool_open_datafile non-noisy on fail */
8520 f
.queue_running
= TRUE
;
8522 /* Side effect: message_subdir is set for the (possibly split) spool directory */
8524 deliver_datafile
= spool_open_datafile(id
);
8525 f
.queue_running
= save_qr
;
8526 if (deliver_datafile
< 0)
8529 /* Save and restore the global sender_address. I'm not sure if we should
8530 not save/restore all the other global variables too, because
8531 spool_read_header() may change all of them. But OTOH, when this
8532 deliver_get_sender_address() gets called, the current message is done
8533 already and nobody needs the globals anymore. (HS12, 2015-08-21) */
8535 spoolname
= string_sprintf("%s-H", id
);
8536 save_sender_address
= sender_address
;
8538 rc
= spool_read_header(spoolname
, TRUE
, TRUE
);
8540 new_sender_address
= sender_address
;
8541 sender_address
= save_sender_address
;
8543 if (rc
!= spool_read_OK
)
8546 assert(new_sender_address
);
8548 (void)close(deliver_datafile
);
8549 deliver_datafile
= -1;
8551 return new_sender_address
;
8557 delivery_re_exec(int exec_type
)
8561 if (cutthrough
.cctx
.sock
>= 0 && cutthrough
.callout_hold_only
)
8563 int channel_fd
= cutthrough
.cctx
.sock
;
8565 smtp_peer_options
= cutthrough
.peer_options
;
8566 continue_sequence
= 0;
8569 if (cutthrough
.is_tls
)
8573 smtp_peer_options
|= OPTION_TLS
;
8574 sending_ip_address
= cutthrough
.snd_ip
;
8575 sending_port
= cutthrough
.snd_port
;
8577 where
= US
"socketpair";
8578 if (socketpair(AF_UNIX
, SOCK_STREAM
, 0, pfd
) != 0)
8582 if ((pid
= fork()) < 0)
8585 else if (pid
== 0) /* child: fork again to totally disconnect */
8587 testharness_pause_ms(100); /* let parent debug out */
8588 /* does not return */
8589 smtp_proxy_tls(cutthrough
.cctx
.tls_ctx
, big_buffer
, big_buffer_size
,
8593 DEBUG(D_transport
) debug_printf("proxy-proc inter-pid %d\n", pid
);
8595 waitpid(pid
, NULL
, 0);
8596 (void) close(channel_fd
); /* release the client socket */
8597 channel_fd
= pfd
[1];
8601 transport_do_pass_socket(cutthrough
.transport
, cutthrough
.host
.name
,
8602 cutthrough
.host
.address
, message_id
, channel_fd
);
8606 cancel_cutthrough_connection(TRUE
, US
"non-continued delivery");
8607 (void) child_exec_exim(exec_type
, FALSE
, NULL
, FALSE
, 2, US
"-Mc", message_id
);
8609 return; /* compiler quietening; control does not reach here. */
8614 LOG_MAIN
| (exec_type
== CEE_EXEC_EXIT
? LOG_PANIC
: LOG_PANIC_DIE
),
8615 "delivery re-exec %s failed: %s", where
, strerror(errno
));
8617 /* Get here if exec_type == CEE_EXEC_EXIT.
8618 Note: this must be _exit(), not exit(). */
8620 _exit(EX_EXECFAILED
);
8626 /* End of deliver.c */