1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2015 */
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 snprintf(CS buffer, sizeof(buffer), "%s/input/%s", spool_directory, queue_name);
146 buffer[sizeof(buffer) - 3] = 0;
147 subptr = Ustrlen(buffer);
148 buffer[subptr+2] = 0; /* terminator for lengthened name */
150 /* This loop runs at least once, for the main or given directory, and then as
151 many times as necessary to scan any subdirectories encountered in the main
152 directory, if they are to be scanned at this time. */
154 for (; i <= *subcount; i++)
157 int subdirchar = subdirs[i]; /* 0 for main directory */
161 buffer[subptr] = '/';
162 buffer[subptr+1] = subdirchar;
165 if (!(dd = opendir(CS buffer)))
168 /* Now scan the directory. */
170 while ((ent = readdir(dd)) != NULL)
172 uschar *name = US ent->d_name;
173 int len = Ustrlen(name);
179 /* If we find a single alphameric sub-directory in the base directory,
180 add it to the list for subsequent scans. */
182 if (i == 0 && len == 1 && isalnum(*name))
184 *subcount = *subcount + 1;
185 subdirs[*subcount] = *name;
189 /* Otherwise, if it is a header spool file, add it to the list */
191 if (len == SPOOL_NAME_LENGTH &&
192 Ustrcmp(name + SPOOL_NAME_LENGTH - 2, "-H") == 0)
194 queue_filename *next =
195 store_get(sizeof(queue_filename) + Ustrlen(name));
196 Ustrcpy(next->text, name);
197 next->dir_uschar = subdirchar;
199 /* Handle the creation of a randomized list. The first item becomes both
200 the top and bottom of the list. Subsequent items are inserted either at
201 the top or the bottom, randomly. This is, I argue, faster than doing a
202 sort by allocating a random number to each item, and it also saves having
203 to store the number with each item. */
214 if (flags == 0) flags = resetflags;
215 if ((flags & 1) == 0)
230 /* Otherwise do a bottom-up merge sort based on the name. */
236 for (j = 0; j < LOG2_MAXNODES; j++)
240 next = merge_queue_lists(next, root[j]);
241 root[j] = (j == LOG2_MAXNODES - 1)? next : NULL;
253 /* Finished with this directory */
257 /* If we have just scanned a sub-directory, and it was empty (count == 2
258 implies just "." and ".." entries), and Exim is no longer configured to
259 use sub-directories, attempt to get rid of it. At the same time, try to
260 get rid of any corresponding msglog subdirectory. These are just cosmetic
261 tidying actions, so just ignore failures. If we are scanning just a single
262 sub-directory, break the loop. */
266 if (!split_spool_directory && count <= 2)
269 sprintf(CS big_buffer, "%s/msglog/%s/%c",
270 spool_directory, queue_name, subdirchar);
271 rmdir(CS big_buffer);
273 if (subdiroffset > 0) break; /* Single sub-directory */
276 /* If we have just scanned the base directory, and subdiroffset is 0,
277 we do not want to continue scanning the sub-directories. */
281 if (subdiroffset == 0) break;
283 } /* Loop for multiple subdirectories */
285 /* When using a bottom-up merge sort, do the final merging of the sublists.
286 Then pass back the final list of file items. */
289 for (i = 0; i < LOG2_MAXNODES; ++i)
290 yield = merge_queue_lists(yield, root[i]);
298 /*************************************************
299 * Perform a queue run *
300 *************************************************/
302 /* The arguments give the messages to start and stop at; NULL means start at
303 the beginning or stop at the end. If the given start message doesn't exist, we
304 start at the next lexically greater one, and likewise we stop at the after the
305 previous lexically lesser one if the given stop message doesn't exist. Because
306 a queue run can take some time, stat each file before forking, in case it has
307 been delivered in the meantime by some other means.
309 The global variables queue_run_force and queue_run_local may be set to cause
310 forced deliveries or local-only deliveries, respectively.
312 If deliver_selectstring[_sender] is not NULL, skip messages whose recipients do
313 not contain the string. As this option is typically used when a machine comes
314 back online, we want to ensure that at least one delivery attempt takes place,
315 so force the first one. The selecting string can optionally be a regex, or
316 refer to the sender instead of recipients.
318 If queue_2stage is set, the queue is scanned twice. The first time, queue_smtp
319 is set so that routing is done for all messages. Thus in the second run those
320 that are routed to the same host should go down the same SMTP connection.
323 start_id message id to start at, or NULL for all
324 stop_id message id to end at, or NULL for all
325 recurse TRUE if recursing for 2-stage run
331 queue_run(uschar *start_id, uschar *stop_id, BOOL recurse)
333 BOOL force_delivery = queue_run_force || deliver_selectstring != NULL ||
334 deliver_selectstring_sender != NULL;
335 const pcre *selectstring_regex = NULL;
336 const pcre *selectstring_regex_sender = NULL;
337 uschar *log_detail = NULL;
342 /* Cancel any specific queue domains. Turn off the flag that causes SMTP
343 deliveries not to happen, unless doing a 2-stage queue run, when the SMTP flag
344 gets set. Save the queue_runner's pid and the flag that indicates any
345 deliveries run directly from this process. Deliveries that are run by handing
346 on TCP/IP channels have queue_run_pid set, but not queue_running. */
348 queue_domains = NULL;
349 queue_smtp_domains = NULL;
350 queue_smtp = queue_2stage;
352 queue_run_pid = getpid();
353 queue_running = TRUE;
355 /* Log the true start of a queue run, and fancy options */
362 if (queue_2stage) *p++ = 'q';
363 if (queue_run_first_delivery) *p++ = 'i';
364 if (queue_run_force) *p++ = 'f';
365 if (deliver_force_thaw) *p++ = 'f';
366 if (queue_run_local) *p++ = 'l';
370 sprintf(CS p, "pid=%d", (int)queue_run_pid);
375 sprintf(CS p, " -q%s", extras);
379 if (deliver_selectstring != NULL)
381 sprintf(CS p, " -R%s %s", deliver_selectstring_regex? "r" : "",
382 deliver_selectstring);
386 if (deliver_selectstring_sender != NULL)
388 sprintf(CS p, " -S%s %s", deliver_selectstring_sender_regex? "r" : "",
389 deliver_selectstring_sender);
393 log_detail = string_copy(big_buffer);
395 log_write(L_queue_run, LOG_MAIN, "Start '%s' queue run: %s",
396 queue_name, log_detail);
398 log_write(L_queue_run, LOG_MAIN, "Start queue run: %s", log_detail);
401 /* If deliver_selectstring is a regex, compile it. */
403 if (deliver_selectstring != NULL && deliver_selectstring_regex)
404 selectstring_regex = regex_must_compile(deliver_selectstring, TRUE, FALSE);
406 if (deliver_selectstring_sender != NULL && deliver_selectstring_sender_regex)
407 selectstring_regex_sender =
408 regex_must_compile(deliver_selectstring_sender, TRUE, FALSE);
410 /* If the spool is split into subdirectories, we want to process it one
411 directory at a time, so as to spread out the directory scanning and the
412 delivering when there are lots of messages involved, except when
413 queue_run_in_order is set.
415 In the random order case, this loop runs once for the main directory (handling
416 any messages therein), and then repeats for any subdirectories that were found.
417 When the first argument of queue_get_spool_list() is 0, it scans the top
418 directory, fills in subdirs, and sets subcount. The order of the directories is
419 then randomized after the first time through, before they are scanned in
420 subsqeuent iterations.
422 When the first argument of queue_get_spool_list() is -1 (for queue_run_in_
423 order), it scans all directories and makes a single message list. */
425 for (i = (queue_run_in_order? -1 : 0);
426 i <= (queue_run_in_order? -1 : subcount);
430 void *reset_point1 = store_get(0);
435 debug_printf("queue running main directory\n");
437 debug_printf("queue running combined directories\n");
439 debug_printf("queue running subdirectory '%c'\n", subdirs[i]);
442 for (f = queue_get_spool_list(i, subdirs, &subcount, !queue_run_in_order);
452 /* Unless deliveries are forced, if deliver_queue_load_max is non-negative,
453 check that the load average is low enough to permit deliveries. */
455 if (!queue_run_force && deliver_queue_load_max >= 0)
457 load_average = os_getloadavg();
458 if (load_average > deliver_queue_load_max)
460 log_write(L_queue_run, LOG_MAIN, "Abandon queue run: %s (load %.2f, max %.2f)",
462 (double)load_average/1000.0,
463 (double)deliver_queue_load_max/1000.0);
464 i = subcount; /* Don't process other directories */
469 DEBUG(D_load) debug_printf("load average = %.2f max = %.2f\n",
470 (double)load_average/1000.0,
471 (double)deliver_queue_load_max/1000.0);
475 /* Skip this message unless it's within the ID limits */
477 if (stop_id != NULL && Ustrncmp(f->text, stop_id, MESSAGE_ID_LENGTH) > 0)
479 if (start_id != NULL && Ustrncmp(f->text, start_id, MESSAGE_ID_LENGTH) < 0)
482 /* Check that the message still exists */
484 message_subdir[0] = f->dir_uschar;
485 snprintf(CS buffer, sizeof(buffer), "%s/input/%s/%s/%s",
486 spool_directory, queue_name, message_subdir, f->text);
487 if (Ustat(buffer, &statbuf) < 0) continue;
489 /* There are some tests that require the reading of the header file. Ensure
490 the store used is scavenged afterwards so that this process doesn't keep
491 growing its store. We have to read the header file again when actually
492 delivering, but it's cheaper than forking a delivery process for each
493 message when many are not going to be delivered. */
495 if (deliver_selectstring != NULL || deliver_selectstring_sender != NULL ||
496 queue_run_first_delivery)
499 BOOL orig_dont_deliver = dont_deliver;
500 void *reset_point2 = store_get(0);
502 /* Restore the original setting of dont_deliver after reading the header,
503 so that a setting for a particular message doesn't force it for any that
504 follow. If the message is chosen for delivery, the header is read again
505 in the deliver_message() function, in a subprocess. */
507 if (spool_read_header(f->text, FALSE, TRUE) != spool_read_OK) continue;
508 dont_deliver = orig_dont_deliver;
510 /* Now decide if we want to deliver this message. As we have read the
511 header file, we might as well do the freeze test now, and save forking
514 if (deliver_freeze && !deliver_force_thaw)
516 log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
520 /* Check first_delivery in the case when there are no message logs. */
522 else if (queue_run_first_delivery && !deliver_firsttime)
524 DEBUG(D_queue_run) debug_printf("%s: not first delivery\n", f->text);
528 /* Check for a matching address if deliver_selectstring[_sender} is set.
529 If so, we do a fully delivery - don't want to omit other addresses since
530 their routing might trigger re-writing etc. */
532 /* Sender matching */
534 else if (deliver_selectstring_sender != NULL &&
535 !(deliver_selectstring_sender_regex?
536 (pcre_exec(selectstring_regex_sender, NULL, CS sender_address,
537 Ustrlen(sender_address), 0, PCRE_EOPT, NULL, 0) >= 0)
539 (strstric(sender_address, deliver_selectstring_sender, FALSE)
542 DEBUG(D_queue_run) debug_printf("%s: sender address did not match %s\n",
543 f->text, deliver_selectstring_sender);
547 /* Recipient matching */
549 else if (deliver_selectstring != NULL)
552 for (i = 0; i < recipients_count; i++)
554 uschar *address = recipients_list[i].address;
555 if ((deliver_selectstring_regex?
556 (pcre_exec(selectstring_regex, NULL, CS address,
557 Ustrlen(address), 0, PCRE_EOPT, NULL, 0) >= 0)
559 (strstric(address, deliver_selectstring, FALSE) != NULL))
561 tree_search(tree_nonrecipients, address) == NULL)
565 if (i >= recipients_count)
568 debug_printf("%s: no recipient address matched %s\n",
569 f->text, deliver_selectstring);
574 /* Recover store used when reading the header */
576 store_reset(reset_point2);
577 if (!wanted) continue; /* With next message */
580 /* OK, got a message we want to deliver. Create a pipe which will
581 serve as a means of detecting when all the processes created by the
582 delivery process are finished. This is relevant when the delivery
583 process passes one or more SMTP channels on to its own children. The
584 pipe gets passed down; by reading on it here we detect when the last
585 descendent dies by the unblocking of the read. It's a pity that for
586 most of the time the pipe isn't used, but creating a pipe should be
591 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to create pipe in queue "
592 "runner process %d: %s", queue_run_pid, strerror(errno));
594 queue_run_pipe = pfd[pipe_write]; /* To ensure it gets passed on. */
596 /* Make sure it isn't stdin. This seems unlikely, but just to be on the
599 if (queue_run_pipe == 0)
601 queue_run_pipe = dup(queue_run_pipe);
605 /* Before forking to deliver the message, ensure any open and cached
606 lookup files or databases are closed. Otherwise, closing in the subprocess
607 can make the next subprocess have problems. There won't often be anything
608 open here, but it is possible (e.g. if spool_directory is an expanded
609 string). A single call before this loop would probably suffice, but just in
610 case expansions get inserted at some point, I've taken the heavy-handed
611 approach. When nothing is open, the call should be cheap. */
615 /* Now deliver the message; get the id by cutting the -H off the file
616 name. The return of the process is zero if a delivery was attempted. */
618 set_process_info("running queue: %s", f->text);
619 f->text[SPOOL_NAME_LENGTH-2] = 0;
620 if ((pid = fork()) == 0)
623 if (running_in_test_harness) millisleep(100);
624 (void)close(pfd[pipe_read]);
625 rc = deliver_message(f->text, force_delivery, FALSE);
626 _exit(rc == DELIVER_NOT_ATTEMPTED);
629 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork of delivery process from "
630 "queue runner %d failed\n", queue_run_pid);
632 /* Close the writing end of the synchronizing pipe in this process,
633 then wait for the first level process to terminate. */
635 (void)close(pfd[pipe_write]);
636 set_process_info("running queue: waiting for %s (%d)", f->text, pid);
637 while (wait(&status) != pid);
639 /* A zero return means a delivery was attempted; turn off the force flag
640 for any subsequent calls unless queue_force is set. */
642 if ((status & 0xffff) == 0) force_delivery = queue_run_force;
644 /* If the process crashed, tell somebody */
646 else if ((status & 0x00ff) != 0)
648 log_write(0, LOG_MAIN|LOG_PANIC,
649 "queue run: process %d crashed with signal %d while delivering %s",
650 (int)pid, status & 0x00ff, f->text);
653 /* Before continuing, wait till the pipe gets closed at the far end. This
654 tells us that any children created by the delivery to re-use any SMTP
655 channels have all finished. Since no process actually writes to the pipe,
656 the mere fact that read() unblocks is enough. */
658 set_process_info("running queue: waiting for children of %d", pid);
659 if (read(pfd[pipe_read], buffer, sizeof(buffer)) > 0)
660 log_write(0, LOG_MAIN|LOG_PANIC, "queue run: unexpected data on pipe");
661 (void)close(pfd[pipe_read]);
662 set_process_info("running queue");
664 /* If we are in the test harness, and this is not the first of a 2-stage
665 queue run, update fudged queue times. */
667 if (running_in_test_harness && !queue_2stage)
669 uschar *fqtnext = Ustrchr(fudged_queue_times, '/');
670 if (fqtnext != NULL) fudged_queue_times = fqtnext + 1;
672 } /* End loop for list of messages */
674 store_reset(reset_point1); /* Scavenge list of messages */
676 /* If this was the first time through for random order processing, and
677 sub-directories have been found, randomize their order if necessary. */
679 if (i == 0 && subcount > 1 && !queue_run_in_order)
682 for (j = 1; j <= subcount; j++)
684 int r = random_number(100);
687 int k = (r % subcount) + 1;
689 subdirs[j] = subdirs[k];
694 } /* End loop for multiple directories */
696 /* If queue_2stage is true, we do it all again, with the 2stage flag
701 queue_2stage = FALSE;
702 queue_run(start_id, stop_id, TRUE);
705 /* At top level, log the end of the run. */
709 log_write(L_queue_run, LOG_MAIN, "End '%s' queue run: %s",
710 queue_name, log_detail);
712 log_write(L_queue_run, LOG_MAIN, "End queue run: %s", log_detail);
718 /************************************************
719 * Count messages on the queue *
720 ************************************************/
722 /* Called as a result of -bpc
733 queue_filename *f = NULL;
735 f = queue_get_spool_list(
736 -1, /* entire queue */
737 subdirs, /* for holding sub list */
738 &subcount, /* for subcount */
739 FALSE); /* not random */
740 for (; f != NULL; f = f->next) count++;
741 fprintf(stdout, "%d\n", count);
746 /************************************************
747 * List extra deliveries *
748 ************************************************/
750 /* This is called from queue_list below to print out all addresses that
751 have received a message but which were not primary addresses. That is, all
752 the addresses in the tree of non-recipients that are not primary addresses.
753 The tree has been scanned and the data field filled in for those that are
756 Argument: points to the tree node
760 static void queue_list_extras(tree_node *p)
762 if (p->left != NULL) queue_list_extras(p->left);
763 if (!p->data.val) printf(" +D %s\n", p->name);
764 if (p->right != NULL) queue_list_extras(p->right);
769 /************************************************
770 * List messages on the queue *
771 ************************************************/
773 /* Or a given list of messages. In the "all" case, we get a list of file names
774 as quickly as possible, then scan each one for information to output. If any
775 disappear while we are processing, just leave them out, but give an error if an
776 explicit list was given. This function is a top-level function that is obeyed
777 as a result of the -bp argument. As there may be a lot of messages on the
778 queue, we must tidy up the store after reading the headers for each one.
781 option 0 => list top-level recipients, with "D" for those delivered
782 1 => list only undelivered top-level recipients
783 2 => as 0, plus any generated delivered recipients
784 If 8 is added to any of these values, the queue is listed in
786 list => first of any message ids to list
787 count count of message ids; 0 => all
793 queue_list(int option, uschar **list, int count)
797 int now = (int)time(NULL);
799 queue_filename *f = NULL;
802 /* If given a list of messages, build a chain containing their ids. */
806 queue_filename *last = NULL;
807 for (i = 0; i < count; i++)
809 queue_filename *next =
810 store_get(sizeof(queue_filename) + Ustrlen(list[i]) + 2);
811 sprintf(CS next->text, "%s-H", list[i]);
812 next->dir_uschar = '*';
814 if (i == 0) f = next; else last->next = next;
819 /* Otherwise get a list of the entire queue, in order if necessary. */
822 f = queue_get_spool_list(
823 -1, /* entire queue */
824 subdirs, /* for holding sub list */
825 &subcount, /* for subcount */
826 option >= 8); /* randomize if required */
828 if (option >= 8) option -= 8;
830 /* Now scan the chain and print information, resetting store used
833 reset_point = store_get(0);
835 for (; f != NULL; f = f->next)
841 store_reset(reset_point);
843 message_subdir[0] = f->dir_uschar;
844 rc = spool_read_header(f->text, FALSE, count <= 0);
845 if (rc == spool_read_notopen && errno == ENOENT && count <= 0) continue;
848 env_read = (rc == spool_read_OK || rc == spool_read_hdrerror);
856 sprintf(CS big_buffer, "%s/input/%s/%s/%s",
857 spool_directory, queue_name, message_subdir, f->text);
858 ptr = Ustrlen(big_buffer)-1;
859 big_buffer[ptr] = 'D';
861 /* Add the data size to the header size; don't count the file name
862 at the start of the data file, but add one for the notional blank line
863 that precedes the data. */
865 if (Ustat(big_buffer, &statbuf) == 0)
866 size = message_size + statbuf.st_size - SPOOL_DATA_START_OFFSET + 1;
867 i = (now - received_time)/60; /* minutes on queue */
871 if (i > 72) printf("%2dd ", (i + 12)/24); else printf("%2dh ", i);
873 else printf("%2dm ", i);
875 /* Collect delivered addresses from any J file */
877 big_buffer[ptr] = 'J';
878 jread = Ufopen(big_buffer, "rb");
881 while (Ufgets(big_buffer, big_buffer_size, jread) != NULL)
883 int n = Ustrlen(big_buffer);
885 tree_add_nonrecipient(big_buffer);
891 fprintf(stdout, "%s ", string_format_size(size, big_buffer));
892 for (i = 0; i < 16; i++) fputc(f->text[i], stdout);
894 if (env_read && sender_address != NULL)
896 printf(" <%s>", sender_address);
897 if (sender_set_untrusted) printf(" (%s)", originator_login);
900 if (rc != spool_read_OK)
903 if (save_errno == ERRNO_SPOOLFORMAT)
906 sprintf(CS big_buffer, "%s/input/%s/%s/%s",
907 spool_directory, queue_name, message_subdir, f->text);
908 if (Ustat(big_buffer, &statbuf) == 0)
909 printf("*** spool format error: size=" OFF_T_FMT " ***",
911 else printf("*** spool format error ***");
913 else printf("*** spool read error: %s ***", strerror(save_errno));
914 if (rc != spool_read_hdrerror)
921 if (deliver_freeze) printf(" *** frozen ***");
925 if (recipients_list != NULL)
927 for (i = 0; i < recipients_count; i++)
929 tree_node *delivered =
930 tree_search(tree_nonrecipients, recipients_list[i].address);
931 if (!delivered || option != 1)
932 printf(" %s %s\n", (delivered != NULL)? "D":" ",
933 recipients_list[i].address);
934 if (delivered != NULL) delivered->data.val = TRUE;
936 if (option == 2 && tree_nonrecipients != NULL)
937 queue_list_extras(tree_nonrecipients);
945 /*************************************************
946 * Act on a specific message *
947 *************************************************/
949 /* Actions that require a list of addresses make use of argv/argc/
950 recipients_arg. Other actions do not. This function does its own
954 id id of the message to work on
955 action which action is required (MSG_xxx)
956 argv the original argv for Exim
957 argc the original argc for Exim
958 recipients_arg offset to the list of recipients in argv
960 Returns: FALSE if there was any problem
964 queue_action(uschar *id, int action, uschar **argv, int argc, int recipients_arg)
968 BOOL removed = FALSE;
970 uschar *doing = NULL;
973 uschar spoolname[256];
975 /* Set the global message_id variable, used when re-writing spool files. This
976 also causes message ids to be added to log messages. */
978 Ustrcpy(message_id, id);
980 /* The "actions" that just list the files do not require any locking to be
981 done. Only admin users may read the spool files. */
983 if (action >= MSG_SHOW_BODY)
986 uschar *subdirectory, *suffix;
990 printf("Permission denied\n");
994 if (recipients_arg < argc)
996 printf("*** Only one message can be listed at once\n");
1000 if (action == MSG_SHOW_BODY)
1002 subdirectory = US"input";
1005 else if (action == MSG_SHOW_HEADER)
1007 subdirectory = US"input";
1012 subdirectory = US"msglog";
1016 for (i = 0; i < 2; i++)
1018 message_subdir[0] = split_spool_directory == (i == 0) ? id[5] : 0;
1019 snprintf(CS spoolname, sizeof(spoolname), "%s/%s/%s/%s/%s%s",
1020 spool_directory, subdirectory, queue_name,
1021 message_subdir, id, suffix);
1022 if ((fd = Uopen(spoolname, O_RDONLY, 0)) >= 0)
1027 printf("Failed to open %s file for %s%s: %s\n", subdirectory, id, suffix,
1029 if (action == MSG_SHOW_LOG && !message_logs)
1030 printf("(No message logs are being created because the message_logs "
1031 "option is false.)\n");
1035 while((rc = read(fd, big_buffer, big_buffer_size)) > 0)
1036 rc = write(fileno(stdout), big_buffer, rc);
1042 /* For actions that actually act, open and lock the data file to ensure that no
1043 other process is working on this message. If the file does not exist, continue
1044 only if the action is remove and the user is an admin user, to allow for
1045 tidying up broken states. */
1047 if ((deliver_datafile = spool_open_datafile(id)) < 0)
1049 if (errno == ENOENT)
1052 printf("Spool data file for %s does not exist\n", id);
1053 if (action != MSG_REMOVE || !admin_user) return FALSE;
1054 printf("Continuing, to ensure all files removed\n");
1058 if (errno == 0) printf("Message %s is locked\n", id);
1059 else printf("Couldn't open spool file for %s: %s\n", id,
1065 /* Read the spool header file for the message. Again, continue after an
1066 error only in the case of deleting by an administrator. Setting the third
1067 argument false causes it to look both in the main spool directory and in
1068 the appropriate subdirectory, and set message_subdir according to where it
1069 found the message. */
1071 sprintf(CS spoolname, "%s-H", id);
1072 if (spool_read_header(spoolname, TRUE, FALSE) != spool_read_OK)
1075 if (errno != ERRNO_SPOOLFORMAT)
1076 printf("Spool read error for %s: %s\n", spoolname, strerror(errno));
1078 printf("Spool format error for %s\n", spoolname);
1079 if (action != MSG_REMOVE || !admin_user)
1081 (void)close(deliver_datafile);
1082 deliver_datafile = -1;
1085 printf("Continuing to ensure all files removed\n");
1088 /* Check that the user running this process is entitled to operate on this
1089 message. Only admin users may freeze/thaw, add/cancel recipients, or otherwise
1090 mess about, but the original sender is permitted to remove a message. That's
1091 why we leave this check until after the headers are read. */
1093 if (!admin_user && (action != MSG_REMOVE || real_uid != originator_uid))
1095 printf("Permission denied\n");
1096 (void)close(deliver_datafile);
1097 deliver_datafile = -1;
1101 /* Set up the user name for logging. */
1103 pw = getpwuid(real_uid);
1104 username = (pw != NULL)?
1105 US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid);
1107 /* Take the necessary action. */
1109 if (action != MSG_SHOW_COPY) printf("Message %s ", id);
1114 deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
1115 deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
1116 transport_write_message(NULL, 1, 0, 0, NULL, NULL, NULL, NULL, NULL, 0);
1124 printf("is already frozen\n");
1128 deliver_freeze = TRUE;
1129 deliver_manual_thaw = FALSE;
1130 deliver_frozen_at = time(NULL);
1131 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1133 printf("is now frozen\n");
1134 log_write(0, LOG_MAIN, "frozen by %s", username);
1139 printf("could not be frozen: %s\n", errmsg);
1146 if (!deliver_freeze)
1149 printf("is not frozen\n");
1153 deliver_freeze = FALSE;
1154 deliver_manual_thaw = TRUE;
1155 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1157 printf("is no longer frozen\n");
1158 log_write(0, LOG_MAIN, "unfrozen by %s", username);
1163 printf("could not be unfrozen: %s\n", errmsg);
1169 /* We must ensure all files are removed from both the input directory
1170 and the appropriate subdirectory, to clean up cases when there are odd
1171 files left lying around in odd places. In the normal case message_subdir
1172 will have been set correctly by spool_read_header, but as this is a rare
1173 operation, just run everything twice. */
1176 message_subdir[0] = id[5];
1177 for (j = 0; j < 2; message_subdir[0] = 0, j++)
1179 snprintf(CS spoolname, sizeof(spoolname), "%s/msglog/%s/%s/%s",
1180 spool_directory, queue_name, message_subdir, id);
1181 if (Uunlink(spoolname) < 0)
1183 if (errno != ENOENT)
1186 printf("Error while removing %s: %s\n", spoolname,
1190 else removed = TRUE;
1192 for (i = 0; i < 3; i++)
1194 snprintf(CS spoolname, sizeof(spoolname), "%s/input/%s/%s/%s-%c",
1195 spool_directory, queue_name, message_subdir, id, "DHJ"[i]);
1196 if (Uunlink(spoolname) < 0)
1198 if (errno != ENOENT)
1201 printf("Error while removing %s: %s\n", spoolname,
1205 else removed = TRUE;
1209 /* In the common case, the datafile is open (and locked), so give the
1210 obvious message. Otherwise be more specific. */
1212 if (deliver_datafile >= 0) printf("has been removed\n");
1213 else printf("has been removed or did not exist\n");
1216 log_write(0, LOG_MAIN, "removed by %s", username);
1217 log_write(0, LOG_MAIN, "Completed");
1222 case MSG_MARK_ALL_DELIVERED:
1223 for (i = 0; i < recipients_count; i++)
1225 tree_add_nonrecipient(recipients_list[i].address);
1227 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1229 printf("has been modified\n");
1230 for (i = 0; i < recipients_count; i++)
1231 log_write(0, LOG_MAIN, "address <%s> marked delivered by %s",
1232 recipients_list[i].address, username);
1237 printf("- could not mark all delivered: %s\n", errmsg);
1242 case MSG_EDIT_SENDER:
1243 if (recipients_arg < argc - 1)
1246 printf("- only one sender address can be specified\n");
1249 doing = US"editing sender";
1252 case MSG_ADD_RECIPIENT:
1253 if (doing == NULL) doing = US"adding recipient";
1256 case MSG_MARK_DELIVERED:
1257 if (doing == NULL) doing = US"marking as delivered";
1259 /* Common code for EDIT_SENDER, ADD_RECIPIENT, & MARK_DELIVERED */
1261 if (recipients_arg >= argc)
1264 printf("- error while %s: no address given\n", doing);
1268 for (; recipients_arg < argc; recipients_arg++)
1270 int start, end, domain;
1273 parse_extract_address(argv[recipients_arg], &errmess, &start, &end,
1274 &domain, (action == MSG_EDIT_SENDER));
1276 if (recipient == NULL)
1279 printf("- error while %s:\n bad address %s: %s\n",
1280 doing, argv[recipients_arg], errmess);
1282 else if (recipient[0] != 0 && domain == 0)
1285 printf("- error while %s:\n bad address %s: "
1286 "domain missing\n", doing, argv[recipients_arg]);
1290 if (action == MSG_ADD_RECIPIENT)
1293 if (string_is_utf8(recipient)) allow_utf8_domains = message_smtputf8 = TRUE;
1295 receive_add_recipient(recipient, -1);
1296 log_write(0, LOG_MAIN, "recipient <%s> added by %s",
1297 recipient, username);
1299 else if (action == MSG_MARK_DELIVERED)
1301 for (i = 0; i < recipients_count; i++)
1302 if (Ustrcmp(recipients_list[i].address, recipient) == 0) break;
1303 if (i >= recipients_count)
1305 printf("- error while %s:\n %s is not a recipient:"
1306 " message not updated\n", doing, recipient);
1311 tree_add_nonrecipient(recipients_list[i].address);
1312 log_write(0, LOG_MAIN, "address <%s> marked delivered by %s",
1313 recipient, username);
1316 else /* MSG_EDIT_SENDER */
1319 if (string_is_utf8(recipient)) allow_utf8_domains = message_smtputf8 = TRUE;
1321 sender_address = recipient;
1322 log_write(0, LOG_MAIN, "sender address changed to <%s> by %s",
1323 recipient, username);
1330 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1331 printf("has been modified\n");
1335 printf("- while %s: %s\n", doing, errmsg);
1342 /* Closing the datafile releases the lock and permits other processes
1343 to operate on the message (if it still exists). */
1345 (void)close(deliver_datafile);
1346 deliver_datafile = -1;
1352 /*************************************************
1353 * Check the queue_only_file condition *
1354 *************************************************/
1356 /* The queue_only_file option forces certain kinds of queueing if a given file
1364 queue_check_only(void)
1368 struct stat statbuf;
1371 uschar buffer[1024];
1373 if (queue_only_file == NULL) return;
1375 s = queue_only_file;
1376 while ((ss = string_nextinlist(&s, &sep, buffer, sizeof(buffer))) != NULL)
1378 if (Ustrncmp(ss, "smtp", 4) == 0)
1380 name = US"queue_smtp";
1386 name = US"queue_only";
1390 if (Ustat(ss, &statbuf) == 0)
1393 DEBUG(D_receive) debug_printf("%s set because %s exists\n", name, ss);
1398 /* End of queue.c */