1 /* $Cambridge: exim/src/src/queue.c,v 1.9 2006/02/07 11:19:00 ph10 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2006 */
8 /* See the file NOTICE for conditions of use and distribution. */
10 /* Functions that operate on the input queue. */
17 /* The number of nodes to use for the bottom-up merge sort when a list of queue
18 items is to be ordered. The code for this sort was contributed as a patch by
21 #define LOG2_MAXNODES 32
25 /*************************************************
26 * Helper sort function for queue_get_spool_list *
27 *************************************************/
29 /* This function is used when sorting the queue list in the function
30 queue_get_spool_list() below.
33 a points to an ordered list of queue_filename items
34 b points to another ordered list
36 Returns: a pointer to a merged ordered list
39 static queue_filename *
40 merge_queue_lists(queue_filename *a, queue_filename *b)
42 queue_filename *first = NULL;
43 queue_filename **append = &first;
45 while (a != NULL && b != NULL)
47 if (Ustrcmp(a->text, b->text) < 0)
61 *append=((a != NULL)? a : b);
69 /*************************************************
70 * Get list of spool files *
71 *************************************************/
73 /* Scan the spool directory and return a list of the relevant file names
74 therein. Single-character sub-directories are handled as follows:
76 If the first argument is > 0, a sub-directory is scanned; the letter is
77 taken from the nth entry in subdirs.
79 If the first argument is 0, sub-directories are not scanned. However, a
80 list of them is returned.
82 If the first argument is < 0, sub-directories are scanned for messages,
83 and a single, unified list is created. The returned data blocks contain the
84 identifying character of the subdirectory, if any. The subdirs vector is
85 still required as an argument.
87 If the randomize argument is TRUE, messages are returned in "randomized" order.
88 Actually, the order is anything but random, but the algorithm is cheap, and the
89 point is simply to ensure that the same order doesn't occur every time, in case
90 a particular message is causing a remote MTA to barf - we would like to try
91 other messages to that MTA first.
93 If the randomize argument is FALSE, sort the list according to the file name.
94 This should give the order in which the messages arrived. It is normally used
95 only for presentation to humans, in which case the (possibly expensive) sort
96 that it does is not part of the normal operational code. However, if
97 queue_run_in_order is set, sorting has to take place for queue runs as well.
98 When randomize is FALSE, the first argument is normally -1, so all messages are
102 subdiroffset sub-directory character offset, or 0 or -1 (see above)
103 subdirs vector to store list of subdirchars
104 subcount pointer to int in which to store count of subdirs
105 randomize TRUE if the order of the list is to be unpredictable
107 Returns: pointer to a chain of queue name items
110 static queue_filename *
111 queue_get_spool_list(int subdiroffset, uschar *subdirs, int *subcount,
118 queue_filename *yield = NULL;
119 queue_filename *last = NULL;
123 queue_filename *root[LOG2_MAXNODES];
125 /* When randomizing, the file names are added to the start or end of the list
126 according to the bits of the flags variable. Get a collection of bits from the
127 current time. Use the bottom 16 and just keep re-using them if necessary. When
128 not randomizing, initialize the sublists for the bottom-up merge sort. */
130 if (randomize) resetflags = time(NULL) & 0xFFFF;
131 else for (i = 0; i < LOG2_MAXNODES; i++) root[i] = NULL;
133 /* If processing the full queue, or just the top-level, start at the base
134 directory, and initialize the first subdirectory name (as none). Otherwise,
135 start at the sub-directory offset. */
137 if (subdiroffset <= 0)
143 else i = subdiroffset;
145 /* Set up prototype for the directory name. */
147 sprintf(CS buffer, "%s/input", spool_directory);
148 subptr = Ustrlen(buffer);
149 buffer[subptr+2] = 0; /* terminator for lengthened name */
151 /* This loop runs at least once, for the main or given directory, and then as
152 many times as necessary to scan any subdirectories encountered in the main
153 directory, if they are to be scanned at this time. */
155 for (; i <= *subcount; i++)
158 int subdirchar = subdirs[i]; /* 0 for main directory */
162 buffer[subptr] = '/';
163 buffer[subptr+1] = subdirchar;
166 dd = opendir(CS buffer);
167 if (dd == NULL) continue;
169 /* Now scan the directory. */
171 while ((ent = readdir(dd)) != NULL)
173 uschar *name = US ent->d_name;
174 int len = Ustrlen(name);
180 /* If we find a single alphameric sub-directory in the base directory,
181 add it to the list for subsequent scans. */
183 if (i == 0 && len == 1 && isalnum(*name))
185 *subcount = *subcount + 1;
186 subdirs[*subcount] = *name;
190 /* Otherwise, if it is a header spool file, add it to the list */
192 if (len == SPOOL_NAME_LENGTH &&
193 Ustrcmp(name + SPOOL_NAME_LENGTH - 2, "-H") == 0)
195 queue_filename *next =
196 store_get(sizeof(queue_filename) + Ustrlen(name));
197 Ustrcpy(next->text, name);
198 next->dir_uschar = subdirchar;
200 /* Handle the creation of a randomized list. The first item becomes both
201 the top and bottom of the list. Subsequent items are inserted either at
202 the top or the bottom, randomly. This is, I argue, faster than doing a
203 sort by allocating a random number to each item, and it also saves having
204 to store the number with each item. */
215 if (flags == 0) flags = resetflags;
216 if ((flags & 1) == 0)
231 /* Otherwise do a bottom-up merge sort based on the name. */
237 for (j = 0; j < LOG2_MAXNODES; j++)
241 next = merge_queue_lists(next, root[j]);
242 root[j] = (j == LOG2_MAXNODES - 1)? next : NULL;
254 /* Finished with this directory */
258 /* If we have just scanned a sub-directory, and it was empty (count == 2
259 implies just "." and ".." entries), and Exim is no longer configured to
260 use sub-directories, attempt to get rid of it. At the same time, try to
261 get rid of any corresponding msglog subdirectory. These are just cosmetic
262 tidying actions, so just ignore failures. If we are scanning just a single
263 sub-directory, break the loop. */
267 if (!split_spool_directory && count <= 2)
270 sprintf(CS big_buffer, "%s/msglog/%c", spool_directory, 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);
394 log_write(L_queue_run, LOG_MAIN, "Start queue run: %s", log_detail);
397 /* If deliver_selectstring is a regex, compile it. */
399 if (deliver_selectstring != NULL && deliver_selectstring_regex)
400 selectstring_regex = regex_must_compile(deliver_selectstring, TRUE, FALSE);
402 if (deliver_selectstring_sender != NULL && deliver_selectstring_sender_regex)
403 selectstring_regex_sender =
404 regex_must_compile(deliver_selectstring_sender, TRUE, FALSE);
406 /* If the spool is split into subdirectories, we want to process it one
407 directory at a time, so as to spread out the directory scanning and the
408 delivering when there are lots of messages involved, except when
409 queue_run_in_order is set.
411 In the random order case, this loop runs once for the main directory (handling
412 any messages therein), and then repeats for any subdirectories that were found.
413 When the first argument of queue_get_spool_list() is 0, it scans the top
414 directory, fills in subdirs, and sets subcount. The order of the directories is
415 then randomized after the first time through, before they are scanned in
416 subsqeuent iterations.
418 When the first argument of queue_get_spool_list() is -1 (for queue_run_in_
419 order), it scans all directories and makes a single message list. */
421 for (i = (queue_run_in_order? -1 : 0);
422 i <= (queue_run_in_order? -1 : subcount);
426 void *reset_point1 = store_get(0);
431 debug_printf("queue running main directory\n");
433 debug_printf("queue running combined directories\n");
435 debug_printf("queue running subdirectory '%c'\n", subdirs[i]);
438 for (f = queue_get_spool_list(i, subdirs, &subcount, !queue_run_in_order);
448 /* Unless deliveries are forced, if deliver_queue_load_max is non-negative,
449 check that the load average is low enough to permit deliveries. */
451 if (!queue_run_force && deliver_queue_load_max >= 0)
453 load_average = os_getloadavg();
454 if (load_average > deliver_queue_load_max)
456 log_write(0, LOG_MAIN, "abandon queue run (load %.2f, max %.2f)",
457 (double)load_average/1000.0,
458 (double)deliver_queue_load_max/1000.0);
459 i = subcount; /* Don't process other directories */
464 DEBUG(D_load) debug_printf("load average = %.2f max = %.2f\n",
465 (double)load_average/1000.0,
466 (double)deliver_queue_load_max/1000.0);
470 /* Skip this message unless it's within the ID limits */
472 if (stop_id != NULL && Ustrncmp(f->text, stop_id, MESSAGE_ID_LENGTH) > 0)
474 if (start_id != NULL && Ustrncmp(f->text, start_id, MESSAGE_ID_LENGTH) < 0)
477 /* Check that the message still exists */
479 message_subdir[0] = f->dir_uschar;
480 sprintf(CS buffer, "%s/input/%s/%s", spool_directory, message_subdir,
482 if (Ustat(buffer, &statbuf) < 0) continue;
484 /* There are some tests that require the reading of the header file. Ensure
485 the store used is scavenged afterwards so that this process doesn't keep
486 growing its store. We have to read the header file again when actually
487 delivering, but it's cheaper than forking a delivery process for each
488 message when many are not going to be delivered. */
490 if (deliver_selectstring != NULL || deliver_selectstring_sender != NULL ||
491 queue_run_first_delivery)
494 BOOL orig_dont_deliver = dont_deliver;
495 void *reset_point2 = store_get(0);
497 /* Restore the original setting of dont_deliver after reading the header,
498 so that a setting for a particular message doesn't force it for any that
499 follow. If the message is chosen for delivery, the header is read again
500 in the deliver_message() function, in a subprocess. */
502 if (spool_read_header(f->text, FALSE, TRUE) != spool_read_OK) continue;
503 dont_deliver = orig_dont_deliver;
505 /* Now decide if we want to deliver this message. As we have read the
506 header file, we might as well do the freeze test now, and save forking
509 if (deliver_freeze && !deliver_force_thaw)
511 log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
515 /* Check first_delivery in the case when there are no message logs. */
517 else if (queue_run_first_delivery && !deliver_firsttime)
519 DEBUG(D_queue_run) debug_printf("%s: not first delivery\n", f->text);
523 /* Check for a matching address if deliver_selectstring[_sender} is set.
524 If so, we do a fully delivery - don't want to omit other addresses since
525 their routing might trigger re-writing etc. */
527 /* Sender matching */
529 else if (deliver_selectstring_sender != NULL &&
530 !(deliver_selectstring_sender_regex?
531 (pcre_exec(selectstring_regex_sender, NULL, CS sender_address,
532 Ustrlen(sender_address), 0, PCRE_EOPT, NULL, 0) >= 0)
534 (strstric(sender_address, deliver_selectstring_sender, FALSE)
537 DEBUG(D_queue_run) debug_printf("%s: sender address did not match %s\n",
538 f->text, deliver_selectstring_sender);
542 /* Recipient matching */
544 else if (deliver_selectstring != NULL)
547 for (i = 0; i < recipients_count; i++)
549 uschar *address = recipients_list[i].address;
550 if ((deliver_selectstring_regex?
551 (pcre_exec(selectstring_regex, NULL, CS address,
552 Ustrlen(address), 0, PCRE_EOPT, NULL, 0) >= 0)
554 (strstric(address, deliver_selectstring, FALSE) != NULL))
556 tree_search(tree_nonrecipients, address) == NULL)
560 if (i >= recipients_count)
563 debug_printf("%s: no recipient address matched %s\n",
564 f->text, deliver_selectstring);
569 /* Recover store used when reading the header */
571 store_reset(reset_point2);
572 if (!wanted) continue; /* With next message */
575 /* OK, got a message we want to deliver. Create a pipe which will
576 serve as a means of detecting when all the processes created by the
577 delivery process are finished. This is relevant when the delivery
578 process passes one or more SMTP channels on to its own children. The
579 pipe gets passed down; by reading on it here we detect when the last
580 descendent dies by the unblocking of the read. It's a pity that for
581 most of the time the pipe isn't used, but creating a pipe should be
586 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to create pipe in queue "
587 "runner process %d: %s", queue_run_pid, strerror(errno));
589 queue_run_pipe = pfd[pipe_write]; /* To ensure it gets passed on. */
591 /* Make sure it isn't stdin. This seems unlikely, but just to be on the
594 if (queue_run_pipe == 0)
596 queue_run_pipe = dup(queue_run_pipe);
600 /* Before forking to deliver the message, ensure any open and cached
601 lookup files or databases are closed. Otherwise, closing in the subprocess
602 can make the next subprocess have problems. There won't often be anything
603 open here, but it is possible (e.g. if spool_directory is an expanded
604 string). A single call before this loop would probably suffice, but just in
605 case expansions get inserted at some point, I've taken the heavy-handed
606 approach. When nothing is open, the call should be cheap. */
610 /* Now deliver the message; get the id by cutting the -H off the file
611 name. The return of the process is zero if a delivery was attempted. */
613 set_process_info("running queue: %s", f->text);
614 f->text[SPOOL_NAME_LENGTH-2] = 0;
615 if ((pid = fork()) == 0)
618 if (running_in_test_harness) millisleep(100);
619 (void)close(pfd[pipe_read]);
620 rc = deliver_message(f->text, force_delivery, FALSE);
621 _exit(rc == DELIVER_NOT_ATTEMPTED);
624 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork of delivery process from "
625 "queue runner %d failed\n", queue_run_pid);
627 /* Close the writing end of the synchronizing pipe in this process,
628 then wait for the first level process to terminate. */
630 (void)close(pfd[pipe_write]);
631 set_process_info("running queue: waiting for %s (%d)", f->text, pid);
632 while (wait(&status) != pid);
634 /* A zero return means a delivery was attempted; turn off the force flag
635 for any subsequent calls unless queue_force is set. */
637 if ((status & 0xffff) == 0) force_delivery = queue_run_force;
639 /* If the process crashed, tell somebody */
641 else if ((status & 0x00ff) != 0)
643 log_write(0, LOG_MAIN|LOG_PANIC,
644 "queue run: process %d crashed with signal %d while delivering %s",
645 (int)pid, status & 0x00ff, f->text);
648 /* Before continuing, wait till the pipe gets closed at the far end. This
649 tells us that any children created by the delivery to re-use any SMTP
650 channels have all finished. Since no process actually writes to the pipe,
651 the mere fact that read() unblocks is enough. */
653 set_process_info("running queue: waiting for children of %d", pid);
654 (void)read(pfd[pipe_read], buffer, sizeof(buffer));
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
939 argv/argc/recipients_arg. Other actions do not. This function does its
940 own authority checking.
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 (void)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 printf("Message %s ", id);
1103 printf("is already frozen\n");
1107 deliver_freeze = TRUE;
1108 deliver_manual_thaw = FALSE;
1109 deliver_frozen_at = time(NULL);
1110 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1112 printf("is now frozen\n");
1113 log_write(0, LOG_MAIN, "frozen by %s", username);
1118 printf("could not be frozen: %s\n", errmsg);
1125 if (!deliver_freeze)
1128 printf("is not frozen\n");
1132 deliver_freeze = FALSE;
1133 deliver_manual_thaw = TRUE;
1134 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1136 printf("is no longer frozen\n");
1137 log_write(0, LOG_MAIN, "unfrozen by %s", username);
1142 printf("could not be unfrozen: %s\n", errmsg);
1148 /* We must ensure all files are removed from both the input directory
1149 and the appropriate subdirectory, to clean up cases when there are odd
1150 files left lying around in odd places. In the normal case message_subdir
1151 will have been set correctly by spool_read_header, but as this is a rare
1152 operation, just run everything twice. */
1155 message_subdir[0] = id[5];
1156 for (j = 0; j < 2; message_subdir[0] = 0, j++)
1158 sprintf(CS spoolname, "%s/msglog/%s/%s", spool_directory, message_subdir, id);
1159 if (Uunlink(spoolname) < 0)
1161 if (errno != ENOENT)
1164 printf("Error while removing %s: %s\n", spoolname,
1168 else removed = TRUE;
1170 for (i = 0; i < 3; i++)
1172 sprintf(CS spoolname, "%s/input/%s/%s-%c", spool_directory, message_subdir,
1174 if (Uunlink(spoolname) < 0)
1176 if (errno != ENOENT)
1179 printf("Error while removing %s: %s\n", spoolname,
1183 else removed = TRUE;
1187 /* In the common case, the datafile is open (and locked), so give the
1188 obvious message. Otherwise be more specific. */
1190 if (deliver_datafile >= 0) printf("has been removed\n");
1191 else printf("has been removed or did not exist\n");
1194 log_write(0, LOG_MAIN, "removed by %s", username);
1195 log_write(0, LOG_MAIN, "Completed");
1200 case MSG_MARK_ALL_DELIVERED:
1201 for (i = 0; i < recipients_count; i++)
1203 tree_add_nonrecipient(recipients_list[i].address);
1205 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1207 printf("has been modified\n");
1208 for (i = 0; i < recipients_count; i++)
1209 log_write(0, LOG_MAIN, "address <%s> marked delivered by %s",
1210 recipients_list[i].address, username);
1215 printf("- could not mark all delivered: %s\n", errmsg);
1220 case MSG_EDIT_SENDER:
1221 if (recipients_arg < argc - 1)
1224 printf("- only one sender address can be specified\n");
1227 doing = US"editing sender";
1230 case MSG_ADD_RECIPIENT:
1231 if (doing == NULL) doing = US"adding recipient";
1234 case MSG_MARK_DELIVERED:
1235 if (doing == NULL) doing = US"marking as delivered";
1237 /* Common code for EDIT_SENDER, ADD_RECIPIENT, & MARK_DELIVERED */
1239 if (recipients_arg >= argc)
1242 printf("- error while %s: no address given\n", doing);
1246 for (; recipients_arg < argc; recipients_arg++)
1248 int start, end, domain;
1251 parse_extract_address(argv[recipients_arg], &errmess, &start, &end,
1252 &domain, (action == MSG_EDIT_SENDER));
1254 if (recipient == NULL)
1257 printf("- error while %s:\n bad address %s: %s\n",
1258 doing, argv[recipients_arg], errmess);
1260 else if (recipient[0] != 0 && domain == 0)
1263 printf("- error while %s:\n bad address %s: "
1264 "domain missing\n", doing, argv[recipients_arg]);
1268 if (action == MSG_ADD_RECIPIENT)
1270 receive_add_recipient(recipient, -1);
1271 log_write(0, LOG_MAIN, "recipient <%s> added by %s",
1272 recipient, username);
1274 else if (action == MSG_MARK_DELIVERED)
1276 for (i = 0; i < recipients_count; i++)
1277 if (Ustrcmp(recipients_list[i].address, recipient) == 0) break;
1278 if (i >= recipients_count)
1280 printf("- error while %s:\n %s is not a recipient:"
1281 " message not updated\n", doing, recipient);
1286 tree_add_nonrecipient(recipients_list[i].address);
1287 log_write(0, LOG_MAIN, "address <%s> marked delivered by %s",
1288 recipient, username);
1291 else /* MSG_EDIT_SENDER */
1293 sender_address = recipient;
1294 log_write(0, LOG_MAIN, "sender address changed to <%s> by %s",
1295 recipient, username);
1302 if (spool_write_header(id, SW_MODIFYING, &errmsg) >= 0)
1303 printf("has been modified\n");
1307 printf("- while %s: %s\n", doing, errmsg);
1314 /* Closing the datafile releases the lock and permits other processes
1315 to operate on the message (if it still exists). */
1317 (void)close(deliver_datafile);
1318 deliver_datafile = -1;
1324 /*************************************************
1325 * Check the queue_only_file condition *
1326 *************************************************/
1328 /* The queue_only_file option forces certain kinds of queueing if a given file
1336 queue_check_only(void)
1340 struct stat statbuf;
1341 uschar *s, *ss, *name;
1342 uschar buffer[1024];
1344 if (queue_only_file == NULL) return;
1346 s = queue_only_file;
1347 while ((ss = string_nextinlist(&s, &sep, buffer, sizeof(buffer))) != NULL)
1349 if (Ustrncmp(ss, "smtp", 4) == 0)
1351 name = US"queue_smtp";
1357 name = US"queue_only";
1361 if (Ustat(ss, &statbuf) == 0)
1364 DEBUG(D_receive) debug_printf("%s set because %s exists\n", name, ss);
1369 /* End of queue.c */