1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2009 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Functions that operate on the input queue. */
15 /* The number of nodes to use for the bottom-up merge sort when a list of queue
16 items is to be ordered. The code for this sort was contributed as a patch by
19 #define LOG2_MAXNODES 32
23 /*************************************************
24 * Helper sort function for queue_get_spool_list *
25 *************************************************/
27 /* This function is used when sorting the queue list in the function
28 queue_get_spool_list() below.
31 a points to an ordered list of queue_filename items
32 b points to another ordered list
34 Returns: a pointer to a merged ordered list
37 static queue_filename *
38 merge_queue_lists(queue_filename *a, queue_filename *b)
40 queue_filename *first = NULL;
41 queue_filename **append = &first;
43 while (a != NULL && b != NULL)
45 if (Ustrcmp(a->text, b->text) < 0)
59 *append=((a != NULL)? a : b);
67 /*************************************************
68 * Get list of spool files *
69 *************************************************/
71 /* Scan the spool directory and return a list of the relevant file names
72 therein. Single-character sub-directories are handled as follows:
74 If the first argument is > 0, a sub-directory is scanned; the letter is
75 taken from the nth entry in subdirs.
77 If the first argument is 0, sub-directories are not scanned. However, a
78 list of them is returned.
80 If the first argument is < 0, sub-directories are scanned for messages,
81 and a single, unified list is created. The returned data blocks contain the
82 identifying character of the subdirectory, if any. The subdirs vector is
83 still required as an argument.
85 If the randomize argument is TRUE, messages are returned in "randomized" order.
86 Actually, the order is anything but random, but the algorithm is cheap, and the
87 point is simply to ensure that the same order doesn't occur every time, in case
88 a particular message is causing a remote MTA to barf - we would like to try
89 other messages to that MTA first.
91 If the randomize argument is FALSE, sort the list according to the file name.
92 This should give the order in which the messages arrived. It is normally used
93 only for presentation to humans, in which case the (possibly expensive) sort
94 that it does is not part of the normal operational code. However, if
95 queue_run_in_order is set, sorting has to take place for queue runs as well.
96 When randomize is FALSE, the first argument is normally -1, so all messages are
100 subdiroffset sub-directory character offset, or 0 or -1 (see above)
101 subdirs vector to store list of subdirchars
102 subcount pointer to int in which to store count of subdirs
103 randomize TRUE if the order of the list is to be unpredictable
105 Returns: pointer to a chain of queue name items
108 static queue_filename *
109 queue_get_spool_list(int subdiroffset, uschar *subdirs, int *subcount,
116 queue_filename *yield = NULL;
117 queue_filename *last = NULL;
121 queue_filename *root[LOG2_MAXNODES];
123 /* When randomizing, the file names are added to the start or end of the list
124 according to the bits of the flags variable. Get a collection of bits from the
125 current time. Use the bottom 16 and just keep re-using them if necessary. When
126 not randomizing, initialize the sublists for the bottom-up merge sort. */
128 if (randomize) resetflags = time(NULL) & 0xFFFF;
129 else for (i = 0; i < LOG2_MAXNODES; i++) root[i] = NULL;
131 /* If processing the full queue, or just the top-level, start at the base
132 directory, and initialize the first subdirectory name (as none). Otherwise,
133 start at the sub-directory offset. */
135 if (subdiroffset <= 0)
141 else i = subdiroffset;
143 /* Set up prototype for the directory name. */
145 sprintf(CS buffer, "%s/input", spool_directory);
146 subptr = Ustrlen(buffer);
147 buffer[subptr+2] = 0; /* terminator for lengthened name */
149 /* This loop runs at least once, for the main or given directory, and then as
150 many times as necessary to scan any subdirectories encountered in the main
151 directory, if they are to be scanned at this time. */
153 for (; i <= *subcount; i++)
156 int subdirchar = subdirs[i]; /* 0 for main directory */
160 buffer[subptr] = '/';
161 buffer[subptr+1] = subdirchar;
164 dd = opendir(CS buffer);
165 if (dd == NULL) continue;
167 /* Now scan the directory. */
169 while ((ent = readdir(dd)) != NULL)
171 uschar *name = US ent->d_name;
172 int len = Ustrlen(name);
178 /* If we find a single alphameric sub-directory in the base directory,
179 add it to the list for subsequent scans. */
181 if (i == 0 && len == 1 && isalnum(*name))
183 *subcount = *subcount + 1;
184 subdirs[*subcount] = *name;
188 /* Otherwise, if it is a header spool file, add it to the list */
190 if (len == SPOOL_NAME_LENGTH &&
191 Ustrcmp(name + SPOOL_NAME_LENGTH - 2, "-H") == 0)
193 queue_filename *next =
194 store_get(sizeof(queue_filename) + Ustrlen(name));
195 Ustrcpy(next->text, name);
196 next->dir_uschar = subdirchar;
198 /* Handle the creation of a randomized list. The first item becomes both
199 the top and bottom of the list. Subsequent items are inserted either at
200 the top or the bottom, randomly. This is, I argue, faster than doing a
201 sort by allocating a random number to each item, and it also saves having
202 to store the number with each item. */
213 if (flags == 0) flags = resetflags;
214 if ((flags & 1) == 0)
229 /* Otherwise do a bottom-up merge sort based on the name. */
235 for (j = 0; j < LOG2_MAXNODES; j++)
239 next = merge_queue_lists(next, root[j]);
240 root[j] = (j == LOG2_MAXNODES - 1)? next : NULL;
252 /* Finished with this directory */
256 /* If we have just scanned a sub-directory, and it was empty (count == 2
257 implies just "." and ".." entries), and Exim is no longer configured to
258 use sub-directories, attempt to get rid of it. At the same time, try to
259 get rid of any corresponding msglog subdirectory. These are just cosmetic
260 tidying actions, so just ignore failures. If we are scanning just a single
261 sub-directory, break the loop. */
265 if (!split_spool_directory && count <= 2)
268 sprintf(CS big_buffer, "%s/msglog/%c", spool_directory, subdirchar);
269 rmdir(CS big_buffer);
271 if (subdiroffset > 0) break; /* Single sub-directory */
274 /* If we have just scanned the base directory, and subdiroffset is 0,
275 we do not want to continue scanning the sub-directories. */
279 if (subdiroffset == 0) break;
281 } /* Loop for multiple subdirectories */
283 /* When using a bottom-up merge sort, do the final merging of the sublists.
284 Then pass back the final list of file items. */
287 for (i = 0; i < LOG2_MAXNODES; ++i)
288 yield = merge_queue_lists(yield, root[i]);
296 /*************************************************
297 * Perform a queue run *
298 *************************************************/
300 /* The arguments give the messages to start and stop at; NULL means start at
301 the beginning or stop at the end. If the given start message doesn't exist, we
302 start at the next lexically greater one, and likewise we stop at the after the
303 previous lexically lesser one if the given stop message doesn't exist. Because
304 a queue run can take some time, stat each file before forking, in case it has
305 been delivered in the meantime by some other means.
307 The global variables queue_run_force and queue_run_local may be set to cause
308 forced deliveries or local-only deliveries, respectively.
310 If deliver_selectstring[_sender] is not NULL, skip messages whose recipients do
311 not contain the string. As this option is typically used when a machine comes
312 back online, we want to ensure that at least one delivery attempt takes place,
313 so force the first one. The selecting string can optionally be a regex, or
314 refer to the sender instead of recipients.
316 If queue_2stage is set, the queue is scanned twice. The first time, queue_smtp
317 is set so that routing is done for all messages. Thus in the second run those
318 that are routed to the same host should go down the same SMTP connection.
321 start_id message id to start at, or NULL for all
322 stop_id message id to end at, or NULL for all
323 recurse TRUE if recursing for 2-stage run
329 queue_run(uschar *start_id, uschar *stop_id, BOOL recurse)
331 BOOL force_delivery = queue_run_force || deliver_selectstring != NULL ||
332 deliver_selectstring_sender != NULL;
333 const pcre *selectstring_regex = NULL;
334 const pcre *selectstring_regex_sender = NULL;
335 uschar *log_detail = NULL;
340 /* Cancel any specific queue domains. Turn off the flag that causes SMTP
341 deliveries not to happen, unless doing a 2-stage queue run, when the SMTP flag
342 gets set. Save the queue_runner's pid and the flag that indicates any
343 deliveries run directly from this process. Deliveries that are run by handing
344 on TCP/IP channels have queue_run_pid set, but not queue_running. */
346 queue_domains = NULL;
347 queue_smtp_domains = NULL;
348 queue_smtp = queue_2stage;
350 queue_run_pid = getpid();
351 queue_running = TRUE;
353 /* Log the true start of a queue run, and fancy options */
360 if (queue_2stage) *p++ = 'q';
361 if (queue_run_first_delivery) *p++ = 'i';
362 if (queue_run_force) *p++ = 'f';
363 if (deliver_force_thaw) *p++ = 'f';
364 if (queue_run_local) *p++ = 'l';
368 sprintf(CS p, "pid=%d", (int)queue_run_pid);
373 sprintf(CS p, " -q%s", extras);
377 if (deliver_selectstring != NULL)
379 sprintf(CS p, " -R%s %s", deliver_selectstring_regex? "r" : "",
380 deliver_selectstring);
384 if (deliver_selectstring_sender != NULL)
386 sprintf(CS p, " -S%s %s", deliver_selectstring_sender_regex? "r" : "",
387 deliver_selectstring_sender);
391 log_detail = string_copy(big_buffer);
392 log_write(L_queue_run, LOG_MAIN, "Start queue run: %s", log_detail);
395 /* If deliver_selectstring is a regex, compile it. */
397 if (deliver_selectstring != NULL && deliver_selectstring_regex)
398 selectstring_regex = regex_must_compile(deliver_selectstring, TRUE, FALSE);
400 if (deliver_selectstring_sender != NULL && deliver_selectstring_sender_regex)
401 selectstring_regex_sender =
402 regex_must_compile(deliver_selectstring_sender, TRUE, FALSE);
404 /* If the spool is split into subdirectories, we want to process it one
405 directory at a time, so as to spread out the directory scanning and the
406 delivering when there are lots of messages involved, except when
407 queue_run_in_order is set.
409 In the random order case, this loop runs once for the main directory (handling
410 any messages therein), and then repeats for any subdirectories that were found.
411 When the first argument of queue_get_spool_list() is 0, it scans the top
412 directory, fills in subdirs, and sets subcount. The order of the directories is
413 then randomized after the first time through, before they are scanned in
414 subsqeuent iterations.
416 When the first argument of queue_get_spool_list() is -1 (for queue_run_in_
417 order), it scans all directories and makes a single message list. */
419 for (i = (queue_run_in_order? -1 : 0);
420 i <= (queue_run_in_order? -1 : subcount);
424 void *reset_point1 = store_get(0);
429 debug_printf("queue running main directory\n");
431 debug_printf("queue running combined directories\n");
433 debug_printf("queue running subdirectory '%c'\n", subdirs[i]);
436 for (f = queue_get_spool_list(i, subdirs, &subcount, !queue_run_in_order);
446 /* Unless deliveries are forced, if deliver_queue_load_max is non-negative,
447 check that the load average is low enough to permit deliveries. */
449 if (!queue_run_force && deliver_queue_load_max >= 0)
451 load_average = os_getloadavg();
452 if (load_average > deliver_queue_load_max)
454 log_write(L_queue_run, LOG_MAIN, "Abandon queue run: %s (load %.2f, max %.2f)",
456 (double)load_average/1000.0,
457 (double)deliver_queue_load_max/1000.0);
458 i = subcount; /* Don't process other directories */
463 DEBUG(D_load) debug_printf("load average = %.2f max = %.2f\n",
464 (double)load_average/1000.0,
465 (double)deliver_queue_load_max/1000.0);
469 /* Skip this message unless it's within the ID limits */
471 if (stop_id != NULL && Ustrncmp(f->text, stop_id, MESSAGE_ID_LENGTH) > 0)
473 if (start_id != NULL && Ustrncmp(f->text, start_id, MESSAGE_ID_LENGTH) < 0)
476 /* Check that the message still exists */
478 message_subdir[0] = f->dir_uschar;
479 sprintf(CS buffer, "%s/input/%s/%s", spool_directory, message_subdir,
481 if (Ustat(buffer, &statbuf) < 0) continue;
483 /* There are some tests that require the reading of the header file. Ensure
484 the store used is scavenged afterwards so that this process doesn't keep
485 growing its store. We have to read the header file again when actually
486 delivering, but it's cheaper than forking a delivery process for each
487 message when many are not going to be delivered. */
489 if (deliver_selectstring != NULL || deliver_selectstring_sender != NULL ||
490 queue_run_first_delivery)
493 BOOL orig_dont_deliver = dont_deliver;
494 void *reset_point2 = store_get(0);
496 /* Restore the original setting of dont_deliver after reading the header,
497 so that a setting for a particular message doesn't force it for any that
498 follow. If the message is chosen for delivery, the header is read again
499 in the deliver_message() function, in a subprocess. */
501 if (spool_read_header(f->text, FALSE, TRUE) != spool_read_OK) continue;
502 dont_deliver = orig_dont_deliver;
504 /* Now decide if we want to deliver this message. As we have read the
505 header file, we might as well do the freeze test now, and save forking
508 if (deliver_freeze && !deliver_force_thaw)
510 log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
514 /* Check first_delivery in the case when there are no message logs. */
516 else if (queue_run_first_delivery && !deliver_firsttime)
518 DEBUG(D_queue_run) debug_printf("%s: not first delivery\n", f->text);
522 /* Check for a matching address if deliver_selectstring[_sender} is set.
523 If so, we do a fully delivery - don't want to omit other addresses since
524 their routing might trigger re-writing etc. */
526 /* Sender matching */
528 else if (deliver_selectstring_sender != NULL &&
529 !(deliver_selectstring_sender_regex?
530 (pcre_exec(selectstring_regex_sender, NULL, CS sender_address,
531 Ustrlen(sender_address), 0, PCRE_EOPT, NULL, 0) >= 0)
533 (strstric(sender_address, deliver_selectstring_sender, FALSE)
536 DEBUG(D_queue_run) debug_printf("%s: sender address did not match %s\n",
537 f->text, deliver_selectstring_sender);
541 /* Recipient matching */
543 else if (deliver_selectstring != NULL)
546 for (i = 0; i < recipients_count; i++)
548 uschar *address = recipients_list[i].address;
549 if ((deliver_selectstring_regex?
550 (pcre_exec(selectstring_regex, NULL, CS address,
551 Ustrlen(address), 0, PCRE_EOPT, NULL, 0) >= 0)
553 (strstric(address, deliver_selectstring, FALSE) != NULL))
555 tree_search(tree_nonrecipients, address) == NULL)
559 if (i >= recipients_count)
562 debug_printf("%s: no recipient address matched %s\n",
563 f->text, deliver_selectstring);
568 /* Recover store used when reading the header */
570 store_reset(reset_point2);
571 if (!wanted) continue; /* With next message */
574 /* OK, got a message we want to deliver. Create a pipe which will
575 serve as a means of detecting when all the processes created by the
576 delivery process are finished. This is relevant when the delivery
577 process passes one or more SMTP channels on to its own children. The
578 pipe gets passed down; by reading on it here we detect when the last
579 descendent dies by the unblocking of the read. It's a pity that for
580 most of the time the pipe isn't used, but creating a pipe should be
585 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to create pipe in queue "
586 "runner process %d: %s", queue_run_pid, strerror(errno));
588 queue_run_pipe = pfd[pipe_write]; /* To ensure it gets passed on. */
590 /* Make sure it isn't stdin. This seems unlikely, but just to be on the
593 if (queue_run_pipe == 0)
595 queue_run_pipe = dup(queue_run_pipe);
599 /* Before forking to deliver the message, ensure any open and cached
600 lookup files or databases are closed. Otherwise, closing in the subprocess
601 can make the next subprocess have problems. There won't often be anything
602 open here, but it is possible (e.g. if spool_directory is an expanded
603 string). A single call before this loop would probably suffice, but just in
604 case expansions get inserted at some point, I've taken the heavy-handed
605 approach. When nothing is open, the call should be cheap. */
609 /* Now deliver the message; get the id by cutting the -H off the file
610 name. The return of the process is zero if a delivery was attempted. */
612 set_process_info("running queue: %s", f->text);
613 f->text[SPOOL_NAME_LENGTH-2] = 0;
614 if ((pid = fork()) == 0)
617 if (running_in_test_harness) millisleep(100);
618 (void)close(pfd[pipe_read]);
619 rc = deliver_message(f->text, force_delivery, FALSE);
620 _exit(rc == DELIVER_NOT_ATTEMPTED);
623 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork of delivery process from "
624 "queue runner %d failed\n", queue_run_pid);
626 /* Close the writing end of the synchronizing pipe in this process,
627 then wait for the first level process to terminate. */
629 (void)close(pfd[pipe_write]);
630 set_process_info("running queue: waiting for %s (%d)", f->text, pid);
631 while (wait(&status) != pid);
633 /* A zero return means a delivery was attempted; turn off the force flag
634 for any subsequent calls unless queue_force is set. */
636 if ((status & 0xffff) == 0) force_delivery = queue_run_force;
638 /* If the process crashed, tell somebody */
640 else if ((status & 0x00ff) != 0)
642 log_write(0, LOG_MAIN|LOG_PANIC,
643 "queue run: process %d crashed with signal %d while delivering %s",
644 (int)pid, status & 0x00ff, f->text);
647 /* Before continuing, wait till the pipe gets closed at the far end. This
648 tells us that any children created by the delivery to re-use any SMTP
649 channels have all finished. Since no process actually writes to the pipe,
650 the mere fact that read() unblocks is enough. */
652 set_process_info("running queue: waiting for children of %d", pid);
653 if (read(pfd[pipe_read], buffer, sizeof(buffer)) > 0)
654 log_write(0, LOG_MAIN|LOG_PANIC, "queue run: unexpected data on pipe");
655 (void)close(pfd[pipe_read]);
656 set_process_info("running queue");
658 /* If we are in the test harness, and this is not the first of a 2-stage
659 queue run, update fudged queue times. */
661 if (running_in_test_harness && !queue_2stage)
663 uschar *fqtnext = Ustrchr(fudged_queue_times, '/');
664 if (fqtnext != NULL) fudged_queue_times = fqtnext + 1;
666 } /* End loop for list of messages */
668 store_reset(reset_point1); /* Scavenge list of messages */
670 /* If this was the first time through for random order processing, and
671 sub-directories have been found, randomize their order if necessary. */
673 if (i == 0 && subcount > 1 && !queue_run_in_order)
676 for (j = 1; j <= subcount; j++)
678 int r = random_number(100);
681 int k = (r % subcount) + 1;
683 subdirs[j] = subdirs[k];
688 } /* End loop for multiple directories */
690 /* If queue_2stage is true, we do it all again, with the 2stage flag
695 queue_2stage = FALSE;
696 queue_run(start_id, stop_id, TRUE);
699 /* At top level, log the end of the run. */
701 if (!recurse) log_write(L_queue_run, LOG_MAIN, "End queue run: %s", log_detail);
707 /************************************************
708 * Count messages on the queue *
709 ************************************************/
711 /* Called as a result of -bpc
722 queue_filename *f = NULL;
724 f = queue_get_spool_list(
725 -1, /* entire queue */
726 subdirs, /* for holding sub list */
727 &subcount, /* for subcount */
728 FALSE); /* not random */
729 for (; f != NULL; f = f->next) count++;
730 fprintf(stdout, "%d\n", count);
735 /************************************************
736 * List extra deliveries *
737 ************************************************/
739 /* This is called from queue_list below to print out all addresses that
740 have received a message but which were not primary addresses. That is, all
741 the addresses in the tree of non-recipients that are not primary addresses.
742 The tree has been scanned and the data field filled in for those that are
745 Argument: points to the tree node
749 static void queue_list_extras(tree_node *p)
751 if (p->left != NULL) queue_list_extras(p->left);
752 if (!p->data.val) printf(" +D %s\n", p->name);
753 if (p->right != NULL) queue_list_extras(p->right);
758 /************************************************
759 * List messages on the queue *
760 ************************************************/
762 /* Or a given list of messages. In the "all" case, we get a list of file names
763 as quickly as possible, then scan each one for information to output. If any
764 disappear while we are processing, just leave them out, but give an error if an
765 explicit list was given. This function is a top-level function that is obeyed
766 as a result of the -bp argument. As there may be a lot of messages on the
767 queue, we must tidy up the store after reading the headers for each one.
770 option 0 => list top-level recipients, with "D" for those delivered
771 1 => list only undelivered top-level recipients
772 2 => as 0, plus any generated delivered recipients
773 If 8 is added to any of these values, the queue is listed in
775 list => first of any message ids to list
776 count count of message ids; 0 => all
782 queue_list(int option, uschar **list, int count)
786 int now = (int)time(NULL);
788 queue_filename *f = NULL;
791 /* If given a list of messages, build a chain containing their ids. */
795 queue_filename *last = NULL;
796 for (i = 0; i < count; i++)
798 queue_filename *next =
799 store_get(sizeof(queue_filename) + Ustrlen(list[i]) + 2);
800 sprintf(CS next->text, "%s-H", list[i]);
801 next->dir_uschar = '*';
803 if (i == 0) f = next; else last->next = next;
808 /* Otherwise get a list of the entire queue, in order if necessary. */
811 f = queue_get_spool_list(
812 -1, /* entire queue */
813 subdirs, /* for holding sub list */
814 &subcount, /* for subcount */
815 option >= 8); /* randomize if required */
817 if (option >= 8) option -= 8;
819 /* Now scan the chain and print information, resetting store used
822 reset_point = store_get(0);
824 for (; f != NULL; f = f->next)
830 store_reset(reset_point);
832 message_subdir[0] = f->dir_uschar;
833 rc = spool_read_header(f->text, FALSE, count <= 0);
834 if (rc == spool_read_notopen && errno == ENOENT && count <= 0) continue;
837 env_read = (rc == spool_read_OK || rc == spool_read_hdrerror);
845 sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir,
847 ptr = Ustrlen(big_buffer)-1;
848 big_buffer[ptr] = 'D';
850 /* Add the data size to the header size; don't count the file name
851 at the start of the data file, but add one for the notional blank line
852 that precedes the data. */
854 if (Ustat(big_buffer, &statbuf) == 0)
855 size = message_size + statbuf.st_size - SPOOL_DATA_START_OFFSET + 1;
856 i = (now - received_time)/60; /* minutes on queue */
860 if (i > 72) printf("%2dd ", (i + 12)/24); else printf("%2dh ", i);
862 else printf("%2dm ", i);
864 /* Collect delivered addresses from any J file */
866 big_buffer[ptr] = 'J';
867 jread = Ufopen(big_buffer, "rb");
870 while (Ufgets(big_buffer, big_buffer_size, jread) != NULL)
872 int n = Ustrlen(big_buffer);
874 tree_add_nonrecipient(big_buffer);
880 fprintf(stdout, "%s ", string_format_size(size, big_buffer));
881 for (i = 0; i < 16; i++) fputc(f->text[i], stdout);
883 if (env_read && sender_address != NULL)
885 printf(" <%s>", sender_address);
886 if (sender_set_untrusted) printf(" (%s)", originator_login);
889 if (rc != spool_read_OK)
892 if (save_errno == ERRNO_SPOOLFORMAT)
895 sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir,
897 if (Ustat(big_buffer, &statbuf) == 0)
898 printf("*** spool format error: size=" OFF_T_FMT " ***",
900 else printf("*** spool format error ***");
902 else printf("*** spool read error: %s ***", strerror(save_errno));
903 if (rc != spool_read_hdrerror)
910 if (deliver_freeze) printf(" *** frozen ***");
914 if (recipients_list != NULL)
916 for (i = 0; i < recipients_count; i++)
918 tree_node *delivered =
919 tree_search(tree_nonrecipients, recipients_list[i].address);
920 if (!delivered || option != 1)
921 printf(" %s %s\n", (delivered != NULL)? "D":" ",
922 recipients_list[i].address);
923 if (delivered != NULL) delivered->data.val = TRUE;
925 if (option == 2 && tree_nonrecipients != NULL)
926 queue_list_extras(tree_nonrecipients);
934 /*************************************************
935 * Act on a specific message *
936 *************************************************/
938 /* Actions that require a list of addresses make use of argv/argc/
939 recipients_arg. Other actions do not. This function does its own
943 id id of the message to work on
944 action which action is required (MSG_xxx)
945 argv the original argv for Exim
946 argc the original argc for Exim
947 recipients_arg offset to the list of recipients in argv
949 Returns: FALSE if there was any problem
953 queue_action(uschar *id, int action, uschar **argv, int argc, int recipients_arg)
957 BOOL removed = FALSE;
959 uschar *doing = NULL;
962 uschar spoolname[256];
964 /* Set the global message_id variable, used when re-writing spool files. This
965 also causes message ids to be added to log messages. */
967 Ustrcpy(message_id, id);
969 /* The "actions" that just list the files do not require any locking to be
970 done. Only admin users may read the spool files. */
972 if (action >= MSG_SHOW_BODY)
975 uschar *subdirectory, *suffix;
979 printf("Permission denied\n");
983 if (recipients_arg < argc)
985 printf("*** Only one message can be listed at once\n");
989 if (action == MSG_SHOW_BODY)
991 subdirectory = US"input";
994 else if (action == MSG_SHOW_HEADER)
996 subdirectory = US"input";
1001 subdirectory = US"msglog";
1005 for (i = 0; i < 2; i++)
1007 message_subdir[0] = (split_spool_directory == (i == 0))? id[5] : 0;
1008 sprintf(CS spoolname, "%s/%s/%s/%s%s", spool_directory, subdirectory,
1009 message_subdir, id, suffix);
1010 fd = Uopen(spoolname, O_RDONLY, 0);
1012 if (i == 0) continue;
1013 printf("Failed to open %s file for %s%s: %s\n", subdirectory, id, suffix,
1015 if (action == MSG_SHOW_LOG && !message_logs)
1016 printf("(No message logs are being created because the message_logs "
1017 "option is false.)\n");
1021 while((rc = read(fd, big_buffer, big_buffer_size)) > 0)
1022 rc = write(fileno(stdout), big_buffer, rc);
1028 /* For actions that actually act, open and lock the data file to ensure that no
1029 other process is working on this message. If the file does not exist, continue
1030 only if the action is remove and the user is an admin user, to allow for
1031 tidying up broken states. */
1033 if (!spool_open_datafile(id))
1035 if (errno == ENOENT)
1038 printf("Spool data file for %s does not exist\n", id);
1039 if (action != MSG_REMOVE || !admin_user) return FALSE;
1040 printf("Continuing, to ensure all files removed\n");
1044 if (errno == 0) printf("Message %s is locked\n", id);
1045 else printf("Couldn't open spool file for %s: %s\n", id,
1051 /* Read the spool header file for the message. Again, continue after an
1052 error only in the case of deleting by an administrator. Setting the third
1053 argument false causes it to look both in the main spool directory and in
1054 the appropriate subdirectory, and set message_subdir according to where it
1055 found the message. */
1057 sprintf(CS spoolname, "%s-H", id);
1058 if (spool_read_header(spoolname, TRUE, FALSE) != spool_read_OK)
1061 if (errno != ERRNO_SPOOLFORMAT)
1062 printf("Spool read error for %s: %s\n", spoolname, strerror(errno));
1064 printf("Spool format error for %s\n", spoolname);
1065 if (action != MSG_REMOVE || !admin_user)
1067 (void)close(deliver_datafile);
1068 deliver_datafile = -1;
1071 printf("Continuing to ensure all files removed\n");
1074 /* Check that the user running this process is entitled to operate on this
1075 message. Only admin users may freeze/thaw, add/cancel recipients, or otherwise
1076 mess about, but the original sender is permitted to remove a message. That's
1077 why we leave this check until after the headers are read. */
1079 if (!admin_user && (action != MSG_REMOVE || real_uid != originator_uid))
1081 printf("Permission denied\n");
1082 (void)close(deliver_datafile);
1083 deliver_datafile = -1;
1087 /* Set up the user name for logging. */
1089 pw = getpwuid(real_uid);
1090 username = (pw != NULL)?
1091 US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid);
1093 /* Take the necessary action. */
1095 if (action != MSG_SHOW_COPY) printf("Message %s ", id);
1100 deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
1101 deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
1102 transport_write_message(NULL, 1, 0, 0, NULL, NULL, NULL, NULL, NULL, 0);
1110 printf("is already frozen\n");
1114 deliver_freeze = TRUE;
1115 deliver_manual_thaw = FALSE;
1116 deliver_frozen_at = time(NULL);
1117 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1119 printf("is now frozen\n");
1120 log_write(0, LOG_MAIN, "frozen by %s", username);
1125 printf("could not be frozen: %s\n", errmsg);
1132 if (!deliver_freeze)
1135 printf("is not frozen\n");
1139 deliver_freeze = FALSE;
1140 deliver_manual_thaw = TRUE;
1141 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1143 printf("is no longer frozen\n");
1144 log_write(0, LOG_MAIN, "unfrozen by %s", username);
1149 printf("could not be unfrozen: %s\n", errmsg);
1155 /* We must ensure all files are removed from both the input directory
1156 and the appropriate subdirectory, to clean up cases when there are odd
1157 files left lying around in odd places. In the normal case message_subdir
1158 will have been set correctly by spool_read_header, but as this is a rare
1159 operation, just run everything twice. */
1162 message_subdir[0] = id[5];
1163 for (j = 0; j < 2; message_subdir[0] = 0, j++)
1165 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir, id);
1166 if (Uunlink(spoolname) < 0)
1168 if (errno != ENOENT)
1171 printf("Error while removing %s: %s\n", spoolname,
1175 else removed = TRUE;
1177 for (i = 0; i < 3; i++)
1179 sprintf(CS spoolname, "%s/input/%s/%s-%c", spool_directory, message_subdir,
1181 if (Uunlink(spoolname) < 0)
1183 if (errno != ENOENT)
1186 printf("Error while removing %s: %s\n", spoolname,
1190 else removed = TRUE;
1194 /* In the common case, the datafile is open (and locked), so give the
1195 obvious message. Otherwise be more specific. */
1197 if (deliver_datafile >= 0) printf("has been removed\n");
1198 else printf("has been removed or did not exist\n");
1201 log_write(0, LOG_MAIN, "removed by %s", username);
1202 log_write(0, LOG_MAIN, "Completed");
1207 case MSG_MARK_ALL_DELIVERED:
1208 for (i = 0; i < recipients_count; i++)
1210 tree_add_nonrecipient(recipients_list[i].address);
1212 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1214 printf("has been modified\n");
1215 for (i = 0; i < recipients_count; i++)
1216 log_write(0, LOG_MAIN, "address <%s> marked delivered by %s",
1217 recipients_list[i].address, username);
1222 printf("- could not mark all delivered: %s\n", errmsg);
1227 case MSG_EDIT_SENDER:
1228 if (recipients_arg < argc - 1)
1231 printf("- only one sender address can be specified\n");
1234 doing = US"editing sender";
1237 case MSG_ADD_RECIPIENT:
1238 if (doing == NULL) doing = US"adding recipient";
1241 case MSG_MARK_DELIVERED:
1242 if (doing == NULL) doing = US"marking as delivered";
1244 /* Common code for EDIT_SENDER, ADD_RECIPIENT, & MARK_DELIVERED */
1246 if (recipients_arg >= argc)
1249 printf("- error while %s: no address given\n", doing);
1253 for (; recipients_arg < argc; recipients_arg++)
1255 int start, end, domain;
1258 parse_extract_address(argv[recipients_arg], &errmess, &start, &end,
1259 &domain, (action == MSG_EDIT_SENDER));
1261 if (recipient == NULL)
1264 printf("- error while %s:\n bad address %s: %s\n",
1265 doing, argv[recipients_arg], errmess);
1267 else if (recipient[0] != 0 && domain == 0)
1270 printf("- error while %s:\n bad address %s: "
1271 "domain missing\n", doing, argv[recipients_arg]);
1275 if (action == MSG_ADD_RECIPIENT)
1277 receive_add_recipient(recipient, -1);
1278 log_write(0, LOG_MAIN, "recipient <%s> added by %s",
1279 recipient, username);
1281 else if (action == MSG_MARK_DELIVERED)
1283 for (i = 0; i < recipients_count; i++)
1284 if (Ustrcmp(recipients_list[i].address, recipient) == 0) break;
1285 if (i >= recipients_count)
1287 printf("- error while %s:\n %s is not a recipient:"
1288 " message not updated\n", doing, recipient);
1293 tree_add_nonrecipient(recipients_list[i].address);
1294 log_write(0, LOG_MAIN, "address <%s> marked delivered by %s",
1295 recipient, username);
1298 else /* MSG_EDIT_SENDER */
1300 sender_address = recipient;
1301 log_write(0, LOG_MAIN, "sender address changed to <%s> by %s",
1302 recipient, username);
1309 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1310 printf("has been modified\n");
1314 printf("- while %s: %s\n", doing, errmsg);
1321 /* Closing the datafile releases the lock and permits other processes
1322 to operate on the message (if it still exists). */
1324 (void)close(deliver_datafile);
1325 deliver_datafile = -1;
1331 /*************************************************
1332 * Check the queue_only_file condition *
1333 *************************************************/
1335 /* The queue_only_file option forces certain kinds of queueing if a given file
1343 queue_check_only(void)
1347 struct stat statbuf;
1350 uschar buffer[1024];
1352 if (queue_only_file == NULL) return;
1354 s = queue_only_file;
1355 while ((ss = string_nextinlist(&s, &sep, buffer, sizeof(buffer))) != NULL)
1357 if (Ustrncmp(ss, "smtp", 4) == 0)
1359 name = US"queue_smtp";
1365 name = US"queue_only";
1369 if (Ustat(ss, &statbuf) == 0)
1372 DEBUG(D_receive) debug_printf("%s set because %s exists\n", name, ss);
1377 /* End of queue.c */