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. */
9 /* This single source file is used to compile three utility programs for
10 maintaining Exim hints databases.
12 exim_dumpdb dumps out the contents
13 exim_fixdb patches the database (really for Exim maintenance/testing)
14 exim_tidydb removed obsolete data
16 In all cases, the first argument is the name of the spool directory. The second
17 argument is the name of the database file. The available names are:
19 retry: retry delivery information
20 misc: miscellaneous hints data
21 wait-<t>: message waiting information; <t> is a transport name
22 callout: callout verification cache
24 There are a number of common subroutines, followed by three main programs,
25 whose inclusion is controlled by -D on the compilation command. */
31 /* Identifiers for the different database types. */
36 #define type_callout 4
37 #define type_ratelimit 5
40 /* This is used by our cut-down dbfn_open(). */
42 uschar *spool_directory;
46 /*************************************************
47 * Berkeley DB error callback *
48 *************************************************/
50 /* For Berkeley DB >= 2, we can define a function to be called in case of DB
51 errors. This should help with debugging strange DB problems, e.g. getting "File
52 exists" when you try to open a db file. The API changed at release 4.3. */
54 #if defined(USE_DB) && defined(DB_VERSION_STRING)
56 #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3)
57 dbfn_bdb_error_callback(const DB_ENV *dbenv, const char *pfx, const char *msg)
61 dbfn_bdb_error_callback(const char *pfx, char *msg)
65 printf("Berkeley DB error: %s\n", msg);
71 /*************************************************
73 *************************************************/
75 SIGNAL_BOOL sigalrm_seen;
78 sigalrm_handler(int sig)
80 sig = sig; /* Keep picky compilers happy */
86 /*************************************************
87 * Output usage message and exit *
88 *************************************************/
91 usage(uschar *name, uschar *options)
93 printf("Usage: exim_%s%s <spool-directory> <database-name>\n", name, options);
94 printf(" <database-name> = retry | misc | wait-<transport-name> | callout | ratelimit\n");
100 /*************************************************
101 * Sort out the command arguments *
102 *************************************************/
104 /* This function checks that there are exactly 2 arguments, and checks the
105 second of them to be sure it is a known database name. */
108 check_args(int argc, uschar **argv, uschar *name, uschar *options)
112 if (Ustrcmp(argv[2], "retry") == 0) return type_retry;
113 if (Ustrcmp(argv[2], "misc") == 0) return type_misc;
114 if (Ustrncmp(argv[2], "wait-", 5) == 0) return type_wait;
115 if (Ustrcmp(argv[2], "callout") == 0) return type_callout;
116 if (Ustrcmp(argv[2], "ratelimit") == 0) return type_ratelimit;
118 usage(name, options);
119 return -1; /* Never obeyed */
124 /*************************************************
125 * Handle attempts to write the log *
126 *************************************************/
128 /* The message gets written to stderr when log_write() is called from a
129 utility. The message always gets '\n' added on the end of it. These calls come
130 from modules such as store.c when things go drastically wrong (e.g. malloc()
131 failing). In normal use they won't get obeyed.
134 selector not relevant when running a utility
135 flags not relevant when running a utility
136 format a printf() format
137 ... arguments for format
143 log_write(unsigned int selector, int flags, const char *format, ...)
146 va_start(ap, format);
147 vfprintf(stderr, format, ap);
148 fprintf(stderr, "\n");
150 selector = selector; /* Keep picky compilers happy */
156 /*************************************************
157 * Format a time value for printing *
158 *************************************************/
160 static uschar time_buffer[sizeof("09-xxx-1999 hh:mm:ss ")];
165 struct tm *tmstr = localtime(&t);
166 Ustrftime(time_buffer, sizeof(time_buffer), "%d-%b-%Y %H:%M:%S", tmstr);
172 /*************************************************
173 * Format a cache value for printing *
174 *************************************************/
177 print_cache(int value)
179 return (value == ccache_accept)? US"accept" :
180 (value == ccache_reject)? US"reject" :
186 /*************************************************
188 *************************************************/
196 time_t now = time(NULL);
197 struct tm *tm = localtime(&now);
202 for (t = s + Ustrlen(s) - 1; t >= s; t--)
204 if (*t == ':') continue;
205 if (!isdigit((uschar)*t)) return -1;
210 if (!isdigit((uschar)*t)) return -1;
211 value = value + (*t - '0')*10;
216 case 0: tm->tm_min = value; break;
217 case 1: tm->tm_hour = value; break;
218 case 2: tm->tm_mday = value; break;
219 case 3: tm->tm_mon = value - 1; break;
220 case 4: tm->tm_year = (value < 90)? value + 100 : value; break;
227 #endif /* EXIM_FIXDB */
231 /*************************************************
232 * Open and lock a database file *
233 *************************************************/
235 /* This is a cut-down version from the function in dbfn.h that Exim itself
236 uses. We assume the database exists, and therefore give up if we cannot open
240 name The single-component name of one of Exim's database files.
241 flags O_RDONLY or O_RDWR
242 dbblock Points to an open_db block to be filled in.
245 Returns: NULL if the open failed, or the locking failed.
246 On success, dbblock is returned. This contains the dbm pointer and
247 the fd of the locked lock file.
251 dbfn_open(uschar *name, int flags, open_db *dbblock, BOOL lof)
254 struct flock lock_data;
255 BOOL read_only = flags == O_RDONLY;
258 /* The first thing to do is to open a separate file on which to lock. This
259 ensures that Exim has exclusive use of the database before it even tries to
260 open it. If there is a database, there should be a lock file in existence. */
262 sprintf(CS buffer, "%s/db/%s.lockfile", spool_directory, name);
264 dbblock->lockfd = Uopen(buffer, flags, 0);
265 if (dbblock->lockfd < 0)
267 printf("** Failed to open database lock file %s: %s\n", buffer,
272 /* Now we must get a lock on the opened lock file; do this with a blocking
273 lock that times out. */
275 lock_data.l_type = read_only? F_RDLCK : F_WRLCK;
276 lock_data.l_whence = lock_data.l_start = lock_data.l_len = 0;
278 sigalrm_seen = FALSE;
279 os_non_restarting_signal(SIGALRM, sigalrm_handler);
280 alarm(EXIMDB_LOCK_TIMEOUT);
281 rc = fcntl(dbblock->lockfd, F_SETLKW, &lock_data);
284 if (sigalrm_seen) errno = ETIMEDOUT;
287 printf("** Failed to get %s lock for %s: %s",
288 ((flags & O_RDONLY) != 0)? "read" : "write", buffer,
289 (errno == ETIMEDOUT)? "timed out" : strerror(errno));
290 (void)close(dbblock->lockfd);
294 /* At this point we have an opened and locked separate lock file, that is,
295 exclusive access to the database, so we can go ahead and open it. */
297 sprintf(CS buffer, "%s/db/%s", spool_directory, name);
298 EXIM_DBOPEN(buffer, flags, 0, &(dbblock->dbptr));
300 if (dbblock->dbptr == NULL)
302 printf("** Failed to open DBM file %s for %s:\n %s%s\n", buffer,
303 read_only? "reading" : "writing", strerror(errno),
305 " (or Berkeley DB error while opening)"
310 (void)close(dbblock->lockfd);
320 /*************************************************
321 * Unlock and close a database file *
322 *************************************************/
324 /* Closing a file automatically unlocks it, so after closing the database, just
327 Argument: a pointer to an open database block
332 dbfn_close(open_db *dbblock)
334 EXIM_DBCLOSE(dbblock->dbptr);
335 (void)close(dbblock->lockfd);
341 /*************************************************
342 * Read from database file *
343 *************************************************/
345 /* Passing back the pointer unchanged is useless, because there is no guarantee
346 of alignment. Since all the records used by Exim need to be properly aligned to
347 pick out the timestamps, etc., do the copying centrally here.
350 dbblock a pointer to an open database block
351 key the key of the record to be read
352 length where to put the length (or NULL if length not wanted)
354 Returns: a pointer to the retrieved record, or
355 NULL if the record is not found
359 dbfn_read_with_length(open_db *dbblock, const uschar *key, int *length)
362 EXIM_DATUM key_datum, result_datum;
363 int klen = Ustrlen(key) + 1;
364 uschar * key_copy = store_get(klen);
366 memcpy(key_copy, key, klen);
368 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */
369 EXIM_DATUM_INIT(result_datum); /* to be cleared before use. */
370 EXIM_DATUM_DATA(key_datum) = CS key_copy;
371 EXIM_DATUM_SIZE(key_datum) = klen;
373 if (!EXIM_DBGET(dbblock->dbptr, key_datum, result_datum)) return NULL;
375 yield = store_get(EXIM_DATUM_SIZE(result_datum));
376 memcpy(yield, EXIM_DATUM_DATA(result_datum), EXIM_DATUM_SIZE(result_datum));
377 if (length != NULL) *length = EXIM_DATUM_SIZE(result_datum);
379 EXIM_DATUM_FREE(result_datum); /* Some DBM libs require freeing */
385 #if defined(EXIM_TIDYDB) || defined(EXIM_FIXDB)
387 /*************************************************
388 * Write to database file *
389 *************************************************/
393 dbblock a pointer to an open database block
394 key the key of the record to be written
395 ptr a pointer to the record to be written
396 length the length of the record to be written
398 Returns: the yield of the underlying dbm or db "write" function. If this
399 is dbm, the value is zero for OK.
403 dbfn_write(open_db *dbblock, const uschar *key, void *ptr, int length)
405 EXIM_DATUM key_datum, value_datum;
406 dbdata_generic *gptr = (dbdata_generic *)ptr;
407 int klen = Ustrlen(key) + 1;
408 uschar * key_copy = store_get(klen);
410 memcpy(key_copy, key, klen);
411 gptr->time_stamp = time(NULL);
413 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */
414 EXIM_DATUM_INIT(value_datum); /* to be cleared before use. */
415 EXIM_DATUM_DATA(key_datum) = CS key_copy;
416 EXIM_DATUM_SIZE(key_datum) = klen;
417 EXIM_DATUM_DATA(value_datum) = CS ptr;
418 EXIM_DATUM_SIZE(value_datum) = length;
419 return EXIM_DBPUT(dbblock->dbptr, key_datum, value_datum);
424 /*************************************************
425 * Delete record from database file *
426 *************************************************/
430 dbblock a pointer to an open database block
431 key the key of the record to be deleted
433 Returns: the yield of the underlying dbm or db "delete" function.
437 dbfn_delete(open_db *dbblock, const uschar *key)
439 int klen = Ustrlen(key) + 1;
440 uschar * key_copy = store_get(klen);
442 memcpy(key_copy, key, klen);
443 EXIM_DATUM key_datum;
444 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require clearing */
445 EXIM_DATUM_DATA(key_datum) = CS key_copy;
446 EXIM_DATUM_SIZE(key_datum) = klen;
447 return EXIM_DBDEL(dbblock->dbptr, key_datum);
450 #endif /* EXIM_TIDYDB || EXIM_FIXDB */
454 #if defined(EXIM_DUMPDB) || defined(EXIM_TIDYDB)
455 /*************************************************
456 * Scan the keys of a database file *
457 *************************************************/
461 dbblock a pointer to an open database block
462 start TRUE if starting a new scan
463 FALSE if continuing with the current scan
464 cursor a pointer to a pointer to a cursor anchor, for those dbm libraries
465 that use the notion of a cursor
467 Returns: the next record from the file, or
468 NULL if there are no more
472 dbfn_scan(open_db *dbblock, BOOL start, EXIM_CURSOR **cursor)
474 EXIM_DATUM key_datum, value_datum;
476 value_datum = value_datum; /* dummy; not all db libraries use this */
478 /* Some dbm require an initialization */
480 if (start) EXIM_DBCREATE_CURSOR(dbblock->dbptr, cursor);
482 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */
483 EXIM_DATUM_INIT(value_datum); /* to be cleared before use. */
485 yield = (EXIM_DBSCAN(dbblock->dbptr, key_datum, value_datum, start, *cursor))?
486 US EXIM_DATUM_DATA(key_datum) : NULL;
488 /* Some dbm require a termination */
490 if (!yield) EXIM_DBDELETE_CURSOR(*cursor);
493 #endif /* EXIM_DUMPDB || EXIM_TIDYDB */
498 /*************************************************
499 * The exim_dumpdb main program *
500 *************************************************/
503 main(int argc, char **cargv)
510 uschar **argv = USS cargv;
512 uschar keybuffer[1024];
514 /* Check the arguments, and open the database */
516 dbdata_type = check_args(argc, argv, US"dumpdb", US"");
517 spool_directory = argv[1];
518 dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE);
519 if (dbm == NULL) exit(1);
521 /* Scan the file, formatting the information for each entry. Note
522 that data is returned in a malloc'ed block, in order that it be
523 correctly aligned. */
525 key = dbfn_scan(dbm, TRUE, &cursor);
530 dbdata_callout_cache *callout;
531 dbdata_ratelimit *ratelimit;
532 dbdata_ratelimit_unique *rate_unique;
536 uschar name[MESSAGE_ID_LENGTH + 1];
539 /* Keep a copy of the key separate, as in some DBM's the pointer is into data
540 which might change. */
542 if (Ustrlen(key) > sizeof(keybuffer) - 1)
544 printf("**** Overlong key encountered: %s\n", key);
547 Ustrcpy(keybuffer, key);
548 value = dbfn_read_with_length(dbm, keybuffer, &length);
551 fprintf(stderr, "**** Entry \"%s\" was in the key scan, but the record "
552 "was not found in the file - something is wrong!\n",
556 /* Note: don't use print_time more than once in one statement, since
557 it uses a single buffer. */
562 retry = (dbdata_retry *)value;
563 printf(" %s %d %d %s\n%s ", keybuffer, retry->basic_errno,
564 retry->more_errno, retry->text,
565 print_time(retry->first_failed));
566 printf("%s ", print_time(retry->last_try));
567 printf("%s %s\n", print_time(retry->next_try),
568 (retry->expired)? "*" : "");
572 wait = (dbdata_wait *)value;
573 printf("%s ", keybuffer);
575 name[MESSAGE_ID_LENGTH] = 0;
577 if (wait->count > WAIT_NAME_MAX)
580 "**** Data for %s corrupted\n count=%d=0x%x max=%d\n",
581 CS keybuffer, wait->count, wait->count, WAIT_NAME_MAX);
582 wait->count = WAIT_NAME_MAX;
583 yield = count_bad = 1;
585 for (i = 1; i <= wait->count; i++)
587 Ustrncpy(name, t, MESSAGE_ID_LENGTH);
588 if (count_bad && name[0] == 0) break;
589 if (Ustrlen(name) != MESSAGE_ID_LENGTH ||
590 Ustrspn(name, "0123456789"
591 "abcdefghijklmnopqrstuvwxyz"
592 "ABCDEFGHIJKLMNOPQRSTUVWXYZ-") != MESSAGE_ID_LENGTH)
596 "**** Data for %s corrupted: bad character in message id\n",
598 for (j = 0; j < MESSAGE_ID_LENGTH; j++)
599 fprintf(stderr, "%02x ", name[j]);
600 fprintf(stderr, "\n");
605 t += MESSAGE_ID_LENGTH;
611 printf("%s %s\n", print_time(((dbdata_generic *)value)->time_stamp),
616 callout = (dbdata_callout_cache *)value;
618 /* New-style address record */
620 if (length == sizeof(dbdata_callout_cache_address))
622 printf("%s %s callout=%s\n",
623 print_time(((dbdata_generic *)value)->time_stamp),
625 print_cache(callout->result));
628 /* New-style domain record */
630 else if (length == sizeof(dbdata_callout_cache))
632 printf("%s %s callout=%s postmaster=%s",
633 print_time(((dbdata_generic *)value)->time_stamp),
635 print_cache(callout->result),
636 print_cache(callout->postmaster_result));
637 if (callout->postmaster_result != ccache_unknown)
638 printf(" (%s)", print_time(callout->postmaster_stamp));
639 printf(" random=%s", print_cache(callout->random_result));
640 if (callout->random_result != ccache_unknown)
641 printf(" (%s)", print_time(callout->random_stamp));
648 if (Ustrstr(key, "/unique/") != NULL && length >= sizeof(*rate_unique))
650 ratelimit = (dbdata_ratelimit *)value;
651 rate_unique = (dbdata_ratelimit_unique *)value;
652 printf("%s.%06d rate: %10.3f epoch: %s size: %u key: %s\n",
653 print_time(ratelimit->time_stamp),
654 ratelimit->time_usec, ratelimit->rate,
655 print_time(rate_unique->bloom_epoch), rate_unique->bloom_size,
660 ratelimit = (dbdata_ratelimit *)value;
661 printf("%s.%06d rate: %10.3f key: %s\n",
662 print_time(ratelimit->time_stamp),
663 ratelimit->time_usec, ratelimit->rate,
670 key = dbfn_scan(dbm, FALSE, &cursor);
677 #endif /* EXIM_DUMPDB */
683 /*************************************************
684 * The exim_fixdb main program *
685 *************************************************/
687 /* In order not to hold the database lock any longer than is necessary, each
688 operation on the database uses a separate open/close call. This is expensive,
689 but then using this utility is not expected to be very common. Its main use is
690 to provide a way of patching up hints databases in order to run tests.
695 This causes the data from the given record to be displayed, or "not found"
696 to be output. Note that in the retry database, destination names are
697 preceded by R: or T: for router or transport retry info.
700 This causes the given record to be deleted or "not found" to be output.
702 (3) <record name> <field number> <value>
703 This sets the given value into the given field, identified by a number
704 which is output by the display command. Not all types of record can
708 This exits from exim_fixdb.
710 If the record name is omitted from (2) or (3), the previously used record name
714 int main(int argc, char **cargv)
717 uschar **argv = USS cargv;
720 void *reset_point = store_get(0);
722 name[0] = 0; /* No name set */
724 /* Sort out the database type, verify what we are working on and then process
727 dbdata_type = check_args(argc, argv, US"fixdb", US"");
728 printf("Modifying Exim hints database %s/db/%s\n", argv[1], argv[2]);
737 dbdata_callout_cache *callout;
738 dbdata_ratelimit *ratelimit;
739 dbdata_ratelimit_unique *rate_unique;
742 uschar field[256], value[256];
744 store_reset(reset_point);
747 if (Ufgets(buffer, 256, stdin) == NULL) break;
749 buffer[Ustrlen(buffer)-1] = 0;
750 field[0] = value[0] = 0;
752 /* If the buffer contains just one digit, or just consists of "d", use the
753 previous name for an update. */
755 if ((isdigit((uschar)buffer[0]) && (buffer[1] == ' ' || buffer[1] == '\0'))
756 || Ustrcmp(buffer, "d") == 0)
760 printf("No previous record name is set\n");
763 (void)sscanf(CS buffer, "%s %s", field, value);
768 (void)sscanf(CS buffer, "%s %s %s", name, field, value);
771 /* Handle an update request */
776 spool_directory = argv[1];
777 dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE);
778 if (dbm == NULL) continue;
780 if (Ustrcmp(field, "d") == 0)
782 if (value[0] != 0) printf("unexpected value after \"d\"\n");
783 else printf("%s\n", (dbfn_delete(dbm, name) < 0)?
784 "not found" : "deleted");
789 else if (isdigit((uschar)field[0]))
791 int fieldno = Uatoi(field);
794 printf("value missing\n");
800 record = dbfn_read_with_length(dbm, name, &oldlength);
801 if (record == NULL) printf("not found\n"); else
804 int length = 0; /* Stops compiler warning */
809 retry = (dbdata_retry *)record;
810 length = sizeof(dbdata_retry) + Ustrlen(retry->text);
815 retry->basic_errno = Uatoi(value);
819 retry->more_errno = Uatoi(value);
823 if ((tt = read_time(value)) > 0) retry->first_failed = tt;
824 else printf("bad time value\n");
828 if ((tt = read_time(value)) > 0) retry->last_try = tt;
829 else printf("bad time value\n");
833 if ((tt = read_time(value)) > 0) retry->next_try = tt;
834 else printf("bad time value\n");
838 if (Ustrcmp(value, "yes") == 0) retry->expired = TRUE;
839 else if (Ustrcmp(value, "no") == 0) retry->expired = FALSE;
840 else printf("\"yes\" or \"no\" expected=n");
844 printf("unknown field number\n");
851 printf("Can't change contents of wait database record\n");
855 printf("Can't change contents of misc database record\n");
859 callout = (dbdata_callout_cache *)record;
860 length = sizeof(dbdata_callout_cache);
864 callout->result = Uatoi(value);
868 callout->postmaster_result = Uatoi(value);
872 callout->random_result = Uatoi(value);
876 printf("unknown field number\n");
883 ratelimit = (dbdata_ratelimit *)record;
887 if ((tt = read_time(value)) > 0) ratelimit->time_stamp = tt;
888 else printf("bad time value\n");
892 ratelimit->time_usec = Uatoi(value);
896 ratelimit->rate = Ustrtod(value, NULL);
900 if (Ustrstr(name, "/unique/") != NULL
901 && oldlength >= sizeof(dbdata_ratelimit_unique))
903 rate_unique = (dbdata_ratelimit_unique *)record;
904 if ((tt = read_time(value)) > 0) rate_unique->bloom_epoch = tt;
905 else printf("bad time value\n");
908 /* else fall through */
912 if (Ustrstr(name, "/unique/") != NULL
913 && oldlength >= sizeof(dbdata_ratelimit_unique))
917 unsigned n, hash, hinc;
921 md5_end(&md5info, value, Ustrlen(value), md5sum);
922 hash = md5sum[0] << 0 | md5sum[1] << 8
923 | md5sum[2] << 16 | md5sum[3] << 24;
924 hinc = md5sum[4] << 0 | md5sum[5] << 8
925 | md5sum[6] << 16 | md5sum[7] << 24;
926 rate_unique = (dbdata_ratelimit_unique *)record;
928 for (n = 0; n < 8; n++, hash += hinc)
930 int bit = 1 << (hash % 8);
931 int byte = (hash / 8) % rate_unique->bloom_size;
932 if ((rate_unique->bloom[byte] & bit) == 0)
935 if (fieldno == 5) rate_unique->bloom[byte] |= bit;
939 seen ? "seen" : fieldno == 5 ? "added" : "unseen", value);
942 /* else fall through */
945 printf("unknown field number\n");
952 dbfn_write(dbm, name, record, oldlength);
959 printf("field number or d expected\n");
964 if (!verify) continue;
967 /* The "name" q causes an exit */
969 else if (Ustrcmp(name, "q") == 0) return 0;
971 /* Handle a read request, or verify after an update. */
973 spool_directory = argv[1];
974 dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE);
975 if (dbm == NULL) continue;
977 record = dbfn_read_with_length(dbm, name, &oldlength);
980 printf("record %s not found\n", name);
986 printf("%s\n", CS print_time(((dbdata_generic *)record)->time_stamp));
990 retry = (dbdata_retry *)record;
991 printf("0 error number: %d %s\n", retry->basic_errno, retry->text);
992 printf("1 extra data: %d\n", retry->more_errno);
993 printf("2 first failed: %s\n", print_time(retry->first_failed));
994 printf("3 last try: %s\n", print_time(retry->last_try));
995 printf("4 next try: %s\n", print_time(retry->next_try));
996 printf("5 expired: %s\n", (retry->expired)? "yes" : "no");
1000 wait = (dbdata_wait *)record;
1002 printf("Sequence: %d\n", wait->sequence);
1003 if (wait->count > WAIT_NAME_MAX)
1005 printf("**** Data corrupted: count=%d=0x%x max=%d ****\n", wait->count,
1006 wait->count, WAIT_NAME_MAX);
1007 wait->count = WAIT_NAME_MAX;
1010 for (i = 1; i <= wait->count; i++)
1012 Ustrncpy(value, t, MESSAGE_ID_LENGTH);
1013 value[MESSAGE_ID_LENGTH] = 0;
1014 if (count_bad && value[0] == 0) break;
1015 if (Ustrlen(value) != MESSAGE_ID_LENGTH ||
1016 Ustrspn(value, "0123456789"
1017 "abcdefghijklmnopqrstuvwxyz"
1018 "ABCDEFGHIJKLMNOPQRSTUVWXYZ-") != MESSAGE_ID_LENGTH)
1021 printf("\n**** Data corrupted: bad character in message id ****\n");
1022 for (j = 0; j < MESSAGE_ID_LENGTH; j++)
1023 printf("%02x ", value[j]);
1027 printf("%s ", value);
1028 t += MESSAGE_ID_LENGTH;
1037 callout = (dbdata_callout_cache *)record;
1038 printf("0 callout: %s (%d)\n", print_cache(callout->result),
1040 if (oldlength > sizeof(dbdata_callout_cache_address))
1042 printf("1 postmaster: %s (%d)\n", print_cache(callout->postmaster_result),
1043 callout->postmaster_result);
1044 printf("2 random: %s (%d)\n", print_cache(callout->random_result),
1045 callout->random_result);
1049 case type_ratelimit:
1050 ratelimit = (dbdata_ratelimit *)record;
1051 printf("0 time stamp: %s\n", print_time(ratelimit->time_stamp));
1052 printf("1 fract. time: .%06d\n", ratelimit->time_usec);
1053 printf("2 sender rate: % .3f\n", ratelimit->rate);
1054 if (Ustrstr(name, "/unique/") != NULL
1055 && oldlength >= sizeof(dbdata_ratelimit_unique))
1057 rate_unique = (dbdata_ratelimit_unique *)record;
1058 printf("3 filter epoch: %s\n", print_time(rate_unique->bloom_epoch));
1059 printf("4 test filter membership\n");
1060 printf("5 add element to filter\n");
1066 /* The database is closed after each request */
1075 #endif /* EXIM_FIXDB */
1080 /*************************************************
1081 * The exim_tidydb main program *
1082 *************************************************/
1085 /* Utility program to tidy the contents of an exim database file. There is one
1088 -t <time> expiry time for old records - default 30 days
1090 For backwards compatibility, an -f option is recognized and ignored. (It used
1091 to request a "full" tidy. This version always does the whole job.) */
1094 typedef struct key_item {
1095 struct key_item *next;
1100 int main(int argc, char **cargv)
1102 struct stat statbuf;
1103 int maxkeep = 30 * 24 * 60 * 60;
1104 int dbdata_type, i, oldest, path_len;
1105 key_item *keychain = NULL;
1109 EXIM_CURSOR *cursor;
1110 uschar **argv = USS cargv;
1114 /* Scan the options */
1116 for (i = 1; i < argc; i++)
1118 if (argv[i][0] != '-') break;
1119 if (Ustrcmp(argv[i], "-f") == 0) continue;
1120 if (Ustrcmp(argv[i], "-t") == 0)
1128 if (!isdigit(*s)) usage(US"tidydb", US" [-t <time>]");
1129 (void)sscanf(CS s, "%d%n", &value, &count);
1133 case 'w': value *= 7;
1134 case 'd': value *= 24;
1135 case 'h': value *= 60;
1136 case 'm': value *= 60;
1139 default: usage(US"tidydb", US" [-t <time>]");
1144 else usage(US"tidydb", US" [-t <time>]");
1147 /* Adjust argument values and process arguments */
1152 dbdata_type = check_args(argc, argv, US"tidydb", US" [-t <time>]");
1154 /* Compute the oldest keep time, verify what we are doing, and open the
1157 oldest = time(NULL) - maxkeep;
1158 printf("Tidying Exim hints database %s/db/%s\n", argv[1], argv[2]);
1160 spool_directory = argv[1];
1161 dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE);
1162 if (dbm == NULL) exit(1);
1164 /* Prepare for building file names */
1166 sprintf(CS buffer, "%s/input/", argv[1]);
1167 path_len = Ustrlen(buffer);
1170 /* It appears, by experiment, that it is a bad idea to make changes
1171 to the file while scanning it. Pity the man page doesn't warn you about that.
1172 Therefore, we scan and build a list of all the keys. Then we use that to
1173 read the records and possibly update them. */
1175 key = dbfn_scan(dbm, TRUE, &cursor);
1178 key_item *k = store_get(sizeof(key_item) + Ustrlen(key));
1181 Ustrcpy(k->key, key);
1182 key = dbfn_scan(dbm, FALSE, &cursor);
1185 /* Now scan the collected keys and operate on the records, resetting
1186 the store each time round. */
1188 reset_point = store_get(0);
1190 while (keychain != NULL)
1192 dbdata_generic *value;
1194 store_reset(reset_point);
1195 key = keychain->key;
1196 keychain = keychain->next;
1197 value = dbfn_read_with_length(dbm, key, NULL);
1199 /* A continuation record may have been deleted or renamed already, so
1200 non-existence is not serious. */
1202 if (value == NULL) continue;
1204 /* Delete if too old */
1206 if (value->time_stamp < oldest)
1208 printf("deleted %s (too old)\n", key);
1209 dbfn_delete(dbm, key);
1213 /* Do database-specific tidying for wait databases, and message-
1214 specific tidying for the retry database. */
1216 if (dbdata_type == type_wait)
1218 dbdata_wait *wait = (dbdata_wait *)value;
1219 BOOL update = FALSE;
1221 /* Leave corrupt records alone */
1223 if (wait->count > WAIT_NAME_MAX)
1225 printf("**** Data for %s corrupted\n count=%d=0x%x max=%d\n",
1226 key, wait->count, wait->count, WAIT_NAME_MAX);
1230 /* Loop for renamed continuation records. For each message id,
1231 check to see if the message exists, and if not, remove its entry
1232 from the record. Because of the possibility of split input directories,
1233 we must look in both possible places for a -D file. */
1238 int length = wait->count * MESSAGE_ID_LENGTH;
1240 for (offset = length - MESSAGE_ID_LENGTH;
1241 offset >= 0; offset -= MESSAGE_ID_LENGTH)
1243 Ustrncpy(buffer+path_len, wait->text + offset, MESSAGE_ID_LENGTH);
1244 sprintf(CS(buffer+path_len + MESSAGE_ID_LENGTH), "-D");
1246 if (Ustat(buffer, &statbuf) != 0)
1248 buffer[path_len] = wait->text[offset+5];
1249 buffer[path_len+1] = '/';
1250 Ustrncpy(buffer+path_len+2, wait->text + offset, MESSAGE_ID_LENGTH);
1251 sprintf(CS(buffer+path_len+2 + MESSAGE_ID_LENGTH), "-D");
1253 if (Ustat(buffer, &statbuf) != 0)
1255 int left = length - offset - MESSAGE_ID_LENGTH;
1256 if (left > 0) Ustrncpy(wait->text + offset,
1257 wait->text + offset + MESSAGE_ID_LENGTH, left);
1259 length -= MESSAGE_ID_LENGTH;
1265 /* If record is empty and the main record, either delete it or rename
1266 the next continuation, repeating if that is also empty. */
1268 if (wait->count == 0 && Ustrchr(key, ':') == NULL)
1270 while (wait->count == 0 && wait->sequence > 0)
1273 dbdata_generic *newvalue;
1274 sprintf(CS newkey, "%s:%d", key, wait->sequence - 1);
1275 newvalue = dbfn_read_with_length(dbm, newkey, NULL);
1276 if (newvalue != NULL)
1279 wait = (dbdata_wait *)newvalue;
1280 dbfn_delete(dbm, newkey);
1281 printf("renamed %s\n", newkey);
1284 else wait->sequence--;
1287 /* If we have ended up with an empty main record, delete it
1288 and break the loop. Otherwise the new record will be scanned. */
1290 if (wait->count == 0 && wait->sequence == 0)
1292 dbfn_delete(dbm, key);
1293 printf("deleted %s (empty)\n", key);
1299 /* If not an empty main record, break the loop */
1304 /* Re-write the record if required */
1308 printf("updated %s\n", key);
1309 dbfn_write(dbm, key, wait, sizeof(dbdata_wait) +
1310 wait->count * MESSAGE_ID_LENGTH);
1314 /* If a retry record's key ends with a message-id, check that that message
1315 still exists; if not, remove this record. */
1317 else if (dbdata_type == type_retry)
1320 int len = Ustrlen(key);
1322 if (len < MESSAGE_ID_LENGTH + 1) continue;
1323 id = key + len - MESSAGE_ID_LENGTH - 1;
1324 if (*id++ != ':') continue;
1326 for (i = 0; i < MESSAGE_ID_LENGTH; i++)
1328 if (i == 6 || i == 13)
1329 { if (id[i] != '-') break; }
1331 { if (!isalnum(id[i])) break; }
1333 if (i < MESSAGE_ID_LENGTH) continue;
1335 Ustrncpy(buffer + path_len, id, MESSAGE_ID_LENGTH);
1336 sprintf(CS(buffer + path_len + MESSAGE_ID_LENGTH), "-D");
1338 if (Ustat(buffer, &statbuf) != 0)
1340 sprintf(CS(buffer + path_len), "%c/%s-D", id[5], id);
1341 if (Ustat(buffer, &statbuf) != 0)
1343 dbfn_delete(dbm, key);
1344 printf("deleted %s (no message)\n", key);
1351 printf("Tidying complete\n");
1355 #endif /* EXIM_TIDYDB */
1357 /* End of exim_dbutil.c */