1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* Copyright (c) The Exim Maintainers 2020 */
7 /* See the file NOTICE for conditions of use and distribution. */
10 /* This single source file is used to compile three utility programs for
11 maintaining Exim hints databases.
13 exim_dumpdb dumps out the contents
14 exim_fixdb patches the database (really for Exim maintenance/testing)
15 exim_tidydb removed obsolete data
17 In all cases, the first argument is the name of the spool directory. The second
18 argument is the name of the database file. The available names are:
20 retry: retry delivery information
21 misc: miscellaneous hints data
22 wait-<t>: message waiting information; <t> is a transport name
23 callout: callout verification cache
24 tls: TLS session resumption cache
26 There are a number of common subroutines, followed by three main programs,
27 whose inclusion is controlled by -D on the compilation command. */
33 /* Identifiers for the different database types. */
38 #define type_callout 4
39 #define type_ratelimit 5
43 /* This is used by our cut-down dbfn_open(). */
45 uschar *spool_directory;
48 /******************************************************************************/
49 /* dummies needed by Solaris build */
54 readconf_printtime(int t)
57 string_vformat_trc(gstring * g, const uschar * func, unsigned line,
58 unsigned size_limit, unsigned flags, const char *format, va_list ap)
61 string_sprintf_trc(const char * fmt, const uschar * func, unsigned line, ...)
64 string_format_trc(uschar * buf, int len, const uschar * func, unsigned line,
65 const char * fmt, ...)
68 struct global_flags f;
69 unsigned int log_selector[1];
71 BOOL split_spool_directory;
72 /******************************************************************************/
75 /*************************************************
76 * Berkeley DB error callback *
77 *************************************************/
79 /* For Berkeley DB >= 2, we can define a function to be called in case of DB
80 errors. This should help with debugging strange DB problems, e.g. getting "File
81 exists" when you try to open a db file. The API changed at release 4.3. */
83 #if defined(USE_DB) && defined(DB_VERSION_STRING)
85 #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3)
86 dbfn_bdb_error_callback(const DB_ENV *dbenv, const char *pfx, const char *msg)
90 dbfn_bdb_error_callback(const char *pfx, char *msg)
94 printf("Berkeley DB error: %s\n", msg);
100 /*************************************************
102 *************************************************/
104 SIGNAL_BOOL sigalrm_seen;
107 sigalrm_handler(int sig)
109 sig = sig; /* Keep picky compilers happy */
115 /*************************************************
116 * Output usage message and exit *
117 *************************************************/
120 usage(uschar *name, uschar *options)
122 printf("Usage: exim_%s%s <spool-directory> <database-name>\n", name, options);
123 printf(" <database-name> = retry | misc | wait-<transport-name> | callout | ratelimit | tls\n");
129 /*************************************************
130 * Sort out the command arguments *
131 *************************************************/
133 /* This function checks that there are exactly 2 arguments, and checks the
134 second of them to be sure it is a known database name. */
137 check_args(int argc, uschar **argv, uschar *name, uschar *options)
141 if (Ustrcmp(argv[2], "retry") == 0) return type_retry;
142 if (Ustrcmp(argv[2], "misc") == 0) return type_misc;
143 if (Ustrncmp(argv[2], "wait-", 5) == 0) return type_wait;
144 if (Ustrcmp(argv[2], "callout") == 0) return type_callout;
145 if (Ustrcmp(argv[2], "ratelimit") == 0) return type_ratelimit;
146 if (Ustrcmp(argv[2], "tls") == 0) return type_tls;
148 usage(name, options);
149 return -1; /* Never obeyed */
154 /*************************************************
155 * Handle attempts to write the log *
156 *************************************************/
158 /* The message gets written to stderr when log_write() is called from a
159 utility. The message always gets '\n' added on the end of it. These calls come
160 from modules such as store.c when things go drastically wrong (e.g. malloc()
161 failing). In normal use they won't get obeyed.
164 selector not relevant when running a utility
165 flags not relevant when running a utility
166 format a printf() format
167 ... arguments for format
173 log_write(unsigned int selector, int flags, const char *format, ...)
176 va_start(ap, format);
177 vfprintf(stderr, format, ap);
178 fprintf(stderr, "\n");
180 selector = selector; /* Keep picky compilers happy */
186 /*************************************************
187 * Format a time value for printing *
188 *************************************************/
190 static uschar time_buffer[sizeof("09-xxx-1999 hh:mm:ss ")];
195 struct tm *tmstr = localtime(&t);
196 Ustrftime(time_buffer, sizeof(time_buffer), "%d-%b-%Y %H:%M:%S", tmstr);
202 /*************************************************
203 * Format a cache value for printing *
204 *************************************************/
207 print_cache(int value)
209 return (value == ccache_accept)? US"accept" :
210 (value == ccache_reject)? US"reject" :
216 /*************************************************
218 *************************************************/
225 time_t now = time(NULL);
226 struct tm *tm = localtime(&now);
231 for (uschar * t = s + Ustrlen(s) - 1; t >= s; t--)
233 if (*t == ':') continue;
234 if (!isdigit((uschar)*t)) return -1;
239 if (!isdigit((uschar)*t)) return -1;
240 value = value + (*t - '0')*10;
245 case 0: tm->tm_min = value; break;
246 case 1: tm->tm_hour = value; break;
247 case 2: tm->tm_mday = value; break;
248 case 3: tm->tm_mon = value - 1; break;
249 case 4: tm->tm_year = (value < 90)? value + 100 : value; break;
256 #endif /* EXIM_FIXDB */
260 /*************************************************
261 * Open and lock a database file *
262 *************************************************/
264 /* This is a cut-down version from the function in dbfn.h that Exim itself
265 uses. We assume the database exists, and therefore give up if we cannot open
269 name The single-component name of one of Exim's database files.
270 flags O_RDONLY or O_RDWR
271 dbblock Points to an open_db block to be filled in.
275 Returns: NULL if the open failed, or the locking failed.
276 On success, dbblock is returned. This contains the dbm pointer and
277 the fd of the locked lock file.
281 dbfn_open(uschar *name, int flags, open_db *dbblock, BOOL lof, BOOL panic)
284 struct flock lock_data;
285 BOOL read_only = flags == O_RDONLY;
286 uschar * dirname, * filename;
288 /* The first thing to do is to open a separate file on which to lock. This
289 ensures that Exim has exclusive use of the database before it even tries to
290 open it. If there is a database, there should be a lock file in existence. */
292 #ifdef COMPILE_UTILITY
293 if ( asprintf(CSS &dirname, "%s/db", spool_directory) < 0
294 || asprintf(CSS &filename, "%s/%s.lockfile", dirname, name) < 0)
297 dirname = string_sprintf("%s/db", spool_directory);
298 filename = string_sprintf("%s/%s.lockfile", dirname, name);
301 dbblock->lockfd = Uopen(filename, flags, 0);
302 if (dbblock->lockfd < 0)
304 printf("** Failed to open database lock file %s: %s\n", filename,
309 /* Now we must get a lock on the opened lock file; do this with a blocking
310 lock that times out. */
312 lock_data.l_type = read_only ? F_RDLCK : F_WRLCK;
313 lock_data.l_whence = lock_data.l_start = lock_data.l_len = 0;
315 sigalrm_seen = FALSE;
316 os_non_restarting_signal(SIGALRM, sigalrm_handler);
317 ALARM(EXIMDB_LOCK_TIMEOUT);
318 rc = fcntl(dbblock->lockfd, F_SETLKW, &lock_data);
321 if (sigalrm_seen) errno = ETIMEDOUT;
324 printf("** Failed to get %s lock for %s: %s",
325 flags & O_WRONLY ? "write" : "read",
327 errno == ETIMEDOUT ? "timed out" : strerror(errno));
328 (void)close(dbblock->lockfd);
332 /* At this point we have an opened and locked separate lock file, that is,
333 exclusive access to the database, so we can go ahead and open it. */
335 #ifdef COMPILE_UTILITY
336 if (asprintf(CSS &filename, "%s/%s", dirname, name) < 0) return NULL;
338 filename = string_sprintf("%s/%s", dirname, name);
340 EXIM_DBOPEN(filename, dirname, flags, 0, &dbblock->dbptr);
344 printf("** Failed to open DBM file %s for %s:\n %s%s\n", filename,
345 read_only? "reading" : "writing", strerror(errno),
347 " (or Berkeley DB error while opening)"
352 (void)close(dbblock->lockfd);
362 /*************************************************
363 * Unlock and close a database file *
364 *************************************************/
366 /* Closing a file automatically unlocks it, so after closing the database, just
369 Argument: a pointer to an open database block
374 dbfn_close(open_db *dbblock)
376 EXIM_DBCLOSE(dbblock->dbptr);
377 (void)close(dbblock->lockfd);
383 /*************************************************
384 * Read from database file *
385 *************************************************/
387 /* Passing back the pointer unchanged is useless, because there is no guarantee
388 of alignment. Since all the records used by Exim need to be properly aligned to
389 pick out the timestamps, etc., do the copying centrally here.
392 dbblock a pointer to an open database block
393 key the key of the record to be read
394 length where to put the length (or NULL if length not wanted)
396 Returns: a pointer to the retrieved record, or
397 NULL if the record is not found
401 dbfn_read_with_length(open_db *dbblock, const uschar *key, int *length)
404 EXIM_DATUM key_datum, result_datum;
405 int klen = Ustrlen(key) + 1;
406 uschar * key_copy = store_get(klen, is_tainted(key));
408 memcpy(key_copy, key, klen);
410 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */
411 EXIM_DATUM_INIT(result_datum); /* to be cleared before use. */
412 EXIM_DATUM_DATA(key_datum) = CS key_copy;
413 EXIM_DATUM_SIZE(key_datum) = klen;
415 if (!EXIM_DBGET(dbblock->dbptr, key_datum, result_datum)) return NULL;
417 /* Assume for now that anything stored could have been tainted. Properly
418 we should store the taint status along with the data. */
420 yield = store_get(EXIM_DATUM_SIZE(result_datum), TRUE);
421 memcpy(yield, EXIM_DATUM_DATA(result_datum), EXIM_DATUM_SIZE(result_datum));
422 if (length != NULL) *length = EXIM_DATUM_SIZE(result_datum);
424 EXIM_DATUM_FREE(result_datum); /* Some DBM libs require freeing */
430 #if defined(EXIM_TIDYDB) || defined(EXIM_FIXDB)
432 /*************************************************
433 * Write to database file *
434 *************************************************/
438 dbblock a pointer to an open database block
439 key the key of the record to be written
440 ptr a pointer to the record to be written
441 length the length of the record to be written
443 Returns: the yield of the underlying dbm or db "write" function. If this
444 is dbm, the value is zero for OK.
448 dbfn_write(open_db *dbblock, const uschar *key, void *ptr, int length)
450 EXIM_DATUM key_datum, value_datum;
451 dbdata_generic *gptr = (dbdata_generic *)ptr;
452 int klen = Ustrlen(key) + 1;
453 uschar * key_copy = store_get(klen, is_tainted(key));
455 memcpy(key_copy, key, klen);
456 gptr->time_stamp = time(NULL);
458 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */
459 EXIM_DATUM_INIT(value_datum); /* to be cleared before use. */
460 EXIM_DATUM_DATA(key_datum) = CS key_copy;
461 EXIM_DATUM_SIZE(key_datum) = klen;
462 EXIM_DATUM_DATA(value_datum) = CS ptr;
463 EXIM_DATUM_SIZE(value_datum) = length;
464 return EXIM_DBPUT(dbblock->dbptr, key_datum, value_datum);
469 /*************************************************
470 * Delete record from database file *
471 *************************************************/
475 dbblock a pointer to an open database block
476 key the key of the record to be deleted
478 Returns: the yield of the underlying dbm or db "delete" function.
482 dbfn_delete(open_db *dbblock, const uschar *key)
484 int klen = Ustrlen(key) + 1;
485 uschar * key_copy = store_get(klen, is_tainted(key));
487 memcpy(key_copy, key, klen);
488 EXIM_DATUM key_datum;
489 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require clearing */
490 EXIM_DATUM_DATA(key_datum) = CS key_copy;
491 EXIM_DATUM_SIZE(key_datum) = klen;
492 return EXIM_DBDEL(dbblock->dbptr, key_datum);
495 #endif /* EXIM_TIDYDB || EXIM_FIXDB */
499 #if defined(EXIM_DUMPDB) || defined(EXIM_TIDYDB)
500 /*************************************************
501 * Scan the keys of a database file *
502 *************************************************/
506 dbblock a pointer to an open database block
507 start TRUE if starting a new scan
508 FALSE if continuing with the current scan
509 cursor a pointer to a pointer to a cursor anchor, for those dbm libraries
510 that use the notion of a cursor
512 Returns: the next record from the file, or
513 NULL if there are no more
517 dbfn_scan(open_db *dbblock, BOOL start, EXIM_CURSOR **cursor)
519 EXIM_DATUM key_datum, value_datum;
521 value_datum = value_datum; /* dummy; not all db libraries use this */
523 /* Some dbm require an initialization */
525 if (start) EXIM_DBCREATE_CURSOR(dbblock->dbptr, cursor);
527 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */
528 EXIM_DATUM_INIT(value_datum); /* to be cleared before use. */
530 yield = (EXIM_DBSCAN(dbblock->dbptr, key_datum, value_datum, start, *cursor))?
531 US EXIM_DATUM_DATA(key_datum) : NULL;
533 /* Some dbm require a termination */
535 if (!yield) EXIM_DBDELETE_CURSOR(*cursor);
538 #endif /* EXIM_DUMPDB || EXIM_TIDYDB */
543 /*************************************************
544 * The exim_dumpdb main program *
545 *************************************************/
548 main(int argc, char **cargv)
555 uschar **argv = USS cargv;
556 uschar keybuffer[1024];
558 /* Check the arguments, and open the database */
560 dbdata_type = check_args(argc, argv, US"dumpdb", US"");
561 spool_directory = argv[1];
562 if (!(dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE, TRUE)))
565 /* Scan the file, formatting the information for each entry. Note
566 that data is returned in a malloc'ed block, in order that it be
567 correctly aligned. */
569 for (uschar * key = dbfn_scan(dbm, TRUE, &cursor);
571 key = dbfn_scan(dbm, FALSE, &cursor))
575 dbdata_callout_cache *callout;
576 dbdata_ratelimit *ratelimit;
577 dbdata_ratelimit_unique *rate_unique;
578 dbdata_tls_session *session;
582 uschar name[MESSAGE_ID_LENGTH + 1];
584 rmark reset_point = store_mark();
586 /* Keep a copy of the key separate, as in some DBM's the pointer is into data
587 which might change. */
589 if (Ustrlen(key) > sizeof(keybuffer) - 1)
591 printf("**** Overlong key encountered: %s\n", key);
594 Ustrcpy(keybuffer, key);
596 if (!(value = dbfn_read_with_length(dbm, keybuffer, &length)))
597 fprintf(stderr, "**** Entry \"%s\" was in the key scan, but the record "
598 "was not found in the file - something is wrong!\n",
602 /* Note: don't use print_time more than once in one statement, since
603 it uses a single buffer. */
608 retry = (dbdata_retry *)value;
609 printf(" %s %d %d %s\n%s ", keybuffer, retry->basic_errno,
610 retry->more_errno, retry->text,
611 print_time(retry->first_failed));
612 printf("%s ", print_time(retry->last_try));
613 printf("%s %s\n", print_time(retry->next_try),
614 (retry->expired)? "*" : "");
618 wait = (dbdata_wait *)value;
619 printf("%s ", keybuffer);
621 name[MESSAGE_ID_LENGTH] = 0;
623 if (wait->count > WAIT_NAME_MAX)
626 "**** Data for %s corrupted\n count=%d=0x%x max=%d\n",
627 CS keybuffer, wait->count, wait->count, WAIT_NAME_MAX);
628 wait->count = WAIT_NAME_MAX;
629 yield = count_bad = 1;
631 for (int i = 1; i <= wait->count; i++)
633 Ustrncpy(name, t, MESSAGE_ID_LENGTH);
634 if (count_bad && name[0] == 0) break;
635 if (Ustrlen(name) != MESSAGE_ID_LENGTH ||
636 Ustrspn(name, "0123456789"
637 "abcdefghijklmnopqrstuvwxyz"
638 "ABCDEFGHIJKLMNOPQRSTUVWXYZ-") != MESSAGE_ID_LENGTH)
641 "**** Data for %s corrupted: bad character in message id\n",
643 for (int j = 0; j < MESSAGE_ID_LENGTH; j++)
644 fprintf(stderr, "%02x ", name[j]);
645 fprintf(stderr, "\n");
650 t += MESSAGE_ID_LENGTH;
656 printf("%s %s\n", print_time(((dbdata_generic *)value)->time_stamp),
661 callout = (dbdata_callout_cache *)value;
663 /* New-style address record */
665 if (length == sizeof(dbdata_callout_cache_address))
667 printf("%s %s callout=%s\n",
668 print_time(((dbdata_generic *)value)->time_stamp),
670 print_cache(callout->result));
673 /* New-style domain record */
675 else if (length == sizeof(dbdata_callout_cache))
677 printf("%s %s callout=%s postmaster=%s",
678 print_time(((dbdata_generic *)value)->time_stamp),
680 print_cache(callout->result),
681 print_cache(callout->postmaster_result));
682 if (callout->postmaster_result != ccache_unknown)
683 printf(" (%s)", print_time(callout->postmaster_stamp));
684 printf(" random=%s", print_cache(callout->random_result));
685 if (callout->random_result != ccache_unknown)
686 printf(" (%s)", print_time(callout->random_stamp));
693 if (Ustrstr(key, "/unique/") != NULL && length >= sizeof(*rate_unique))
695 ratelimit = (dbdata_ratelimit *)value;
696 rate_unique = (dbdata_ratelimit_unique *)value;
697 printf("%s.%06d rate: %10.3f epoch: %s size: %u key: %s\n",
698 print_time(ratelimit->time_stamp),
699 ratelimit->time_usec, ratelimit->rate,
700 print_time(rate_unique->bloom_epoch), rate_unique->bloom_size,
705 ratelimit = (dbdata_ratelimit *)value;
706 printf("%s.%06d rate: %10.3f key: %s\n",
707 print_time(ratelimit->time_stamp),
708 ratelimit->time_usec, ratelimit->rate,
714 session = (dbdata_tls_session *)value;
715 printf(" %s %.*s\n", keybuffer, length, session->session);
719 store_reset(reset_point);
726 #endif /* EXIM_DUMPDB */
732 /*************************************************
733 * The exim_fixdb main program *
734 *************************************************/
736 /* In order not to hold the database lock any longer than is necessary, each
737 operation on the database uses a separate open/close call. This is expensive,
738 but then using this utility is not expected to be very common. Its main use is
739 to provide a way of patching up hints databases in order to run tests.
744 This causes the data from the given record to be displayed, or "not found"
745 to be output. Note that in the retry database, destination names are
746 preceded by R: or T: for router or transport retry info.
749 This causes the given record to be deleted or "not found" to be output.
751 (3) <record name> <field number> <value>
752 This sets the given value into the given field, identified by a number
753 which is output by the display command. Not all types of record can
757 This exits from exim_fixdb.
759 If the record name is omitted from (2) or (3), the previously used record name
763 int main(int argc, char **cargv)
766 uschar **argv = USS cargv;
771 name[0] = 0; /* No name set */
773 /* Sort out the database type, verify what we are working on and then process
776 dbdata_type = check_args(argc, argv, US"fixdb", US"");
777 printf("Modifying Exim hints database %s/db/%s\n", argv[1], argv[2]);
779 for(; (reset_point = store_mark()); store_reset(reset_point))
786 dbdata_callout_cache *callout;
787 dbdata_ratelimit *ratelimit;
788 dbdata_ratelimit_unique *rate_unique;
789 dbdata_tls_session *session;
792 uschar field[256], value[256];
795 if (Ufgets(buffer, 256, stdin) == NULL) break;
797 buffer[Ustrlen(buffer)-1] = 0;
798 field[0] = value[0] = 0;
800 /* If the buffer contains just one digit, or just consists of "d", use the
801 previous name for an update. */
803 if ((isdigit((uschar)buffer[0]) && (buffer[1] == ' ' || buffer[1] == '\0'))
804 || Ustrcmp(buffer, "d") == 0)
808 printf("No previous record name is set\n");
811 (void)sscanf(CS buffer, "%s %s", field, value);
816 (void)sscanf(CS buffer, "%s %s %s", name, field, value);
819 /* Handle an update request */
824 spool_directory = argv[1];
826 if (!(dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE, TRUE)))
829 if (Ustrcmp(field, "d") == 0)
831 if (value[0] != 0) printf("unexpected value after \"d\"\n");
832 else printf("%s\n", (dbfn_delete(dbm, name) < 0)?
833 "not found" : "deleted");
838 else if (isdigit((uschar)field[0]))
840 int fieldno = Uatoi(field);
843 printf("value missing\n");
849 record = dbfn_read_with_length(dbm, name, &oldlength);
850 if (record == NULL) printf("not found\n"); else
853 /*int length = 0; Stops compiler warning */
858 retry = (dbdata_retry *)record;
859 /* length = sizeof(dbdata_retry) + Ustrlen(retry->text); */
863 case 0: retry->basic_errno = Uatoi(value);
865 case 1: retry->more_errno = Uatoi(value);
867 case 2: if ((tt = read_time(value)) > 0) retry->first_failed = tt;
868 else printf("bad time value\n");
870 case 3: if ((tt = read_time(value)) > 0) retry->last_try = tt;
871 else printf("bad time value\n");
873 case 4: if ((tt = read_time(value)) > 0) retry->next_try = tt;
874 else printf("bad time value\n");
876 case 5: if (Ustrcmp(value, "yes") == 0) retry->expired = TRUE;
877 else if (Ustrcmp(value, "no") == 0) retry->expired = FALSE;
878 else printf("\"yes\" or \"no\" expected=n");
880 default: printf("unknown field number\n");
887 printf("Can't change contents of wait database record\n");
891 printf("Can't change contents of misc database record\n");
895 callout = (dbdata_callout_cache *)record;
896 /* length = sizeof(dbdata_callout_cache); */
899 case 0: callout->result = Uatoi(value);
901 case 1: callout->postmaster_result = Uatoi(value);
903 case 2: callout->random_result = Uatoi(value);
905 default: printf("unknown field number\n");
912 ratelimit = (dbdata_ratelimit *)record;
915 case 0: if ((tt = read_time(value)) > 0) ratelimit->time_stamp = tt;
916 else printf("bad time value\n");
918 case 1: ratelimit->time_usec = Uatoi(value);
920 case 2: ratelimit->rate = Ustrtod(value, NULL);
922 case 3: if (Ustrstr(name, "/unique/") != NULL
923 && oldlength >= sizeof(dbdata_ratelimit_unique))
925 rate_unique = (dbdata_ratelimit_unique *)record;
926 if ((tt = read_time(value)) > 0) rate_unique->bloom_epoch = tt;
927 else printf("bad time value\n");
930 /* else fall through */
932 case 5: if (Ustrstr(name, "/unique/") != NULL
933 && oldlength >= sizeof(dbdata_ratelimit_unique))
941 md5_end(&md5info, value, Ustrlen(value), md5sum);
942 hash = md5sum[0] << 0 | md5sum[1] << 8
943 | md5sum[2] << 16 | md5sum[3] << 24;
944 hinc = md5sum[4] << 0 | md5sum[5] << 8
945 | md5sum[6] << 16 | md5sum[7] << 24;
946 rate_unique = (dbdata_ratelimit_unique *)record;
948 for (unsigned n = 0; n < 8; n++, hash += hinc)
950 int bit = 1 << (hash % 8);
951 int byte = (hash / 8) % rate_unique->bloom_size;
952 if ((rate_unique->bloom[byte] & bit) == 0)
955 if (fieldno == 5) rate_unique->bloom[byte] |= bit;
959 seen ? "seen" : fieldno == 5 ? "added" : "unseen", value);
962 /* else fall through */
963 default: printf("unknown field number\n");
970 printf("Can't change contents of tls database record\n");
974 dbfn_write(dbm, name, record, oldlength);
981 printf("field number or d expected\n");
986 if (!verify) continue;
989 /* The "name" q causes an exit */
991 else if (Ustrcmp(name, "q") == 0) return 0;
993 /* Handle a read request, or verify after an update. */
995 spool_directory = argv[1];
996 if (!(dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE, TRUE)))
999 if (!(record = dbfn_read_with_length(dbm, name, &oldlength)))
1001 printf("record %s not found\n", name);
1007 printf("%s\n", CS print_time(((dbdata_generic *)record)->time_stamp));
1011 retry = (dbdata_retry *)record;
1012 printf("0 error number: %d %s\n", retry->basic_errno, retry->text);
1013 printf("1 extra data: %d\n", retry->more_errno);
1014 printf("2 first failed: %s\n", print_time(retry->first_failed));
1015 printf("3 last try: %s\n", print_time(retry->last_try));
1016 printf("4 next try: %s\n", print_time(retry->next_try));
1017 printf("5 expired: %s\n", (retry->expired)? "yes" : "no");
1021 wait = (dbdata_wait *)record;
1023 printf("Sequence: %d\n", wait->sequence);
1024 if (wait->count > WAIT_NAME_MAX)
1026 printf("**** Data corrupted: count=%d=0x%x max=%d ****\n", wait->count,
1027 wait->count, WAIT_NAME_MAX);
1028 wait->count = WAIT_NAME_MAX;
1031 for (int i = 1; i <= wait->count; i++)
1033 Ustrncpy(value, t, MESSAGE_ID_LENGTH);
1034 value[MESSAGE_ID_LENGTH] = 0;
1035 if (count_bad && value[0] == 0) break;
1036 if (Ustrlen(value) != MESSAGE_ID_LENGTH ||
1037 Ustrspn(value, "0123456789"
1038 "abcdefghijklmnopqrstuvwxyz"
1039 "ABCDEFGHIJKLMNOPQRSTUVWXYZ-") != MESSAGE_ID_LENGTH)
1041 printf("\n**** Data corrupted: bad character in message id ****\n");
1042 for (int j = 0; j < MESSAGE_ID_LENGTH; j++)
1043 printf("%02x ", value[j]);
1047 printf("%s ", value);
1048 t += MESSAGE_ID_LENGTH;
1057 callout = (dbdata_callout_cache *)record;
1058 printf("0 callout: %s (%d)\n", print_cache(callout->result),
1060 if (oldlength > sizeof(dbdata_callout_cache_address))
1062 printf("1 postmaster: %s (%d)\n", print_cache(callout->postmaster_result),
1063 callout->postmaster_result);
1064 printf("2 random: %s (%d)\n", print_cache(callout->random_result),
1065 callout->random_result);
1069 case type_ratelimit:
1070 ratelimit = (dbdata_ratelimit *)record;
1071 printf("0 time stamp: %s\n", print_time(ratelimit->time_stamp));
1072 printf("1 fract. time: .%06d\n", ratelimit->time_usec);
1073 printf("2 sender rate: % .3f\n", ratelimit->rate);
1074 if (Ustrstr(name, "/unique/") != NULL
1075 && oldlength >= sizeof(dbdata_ratelimit_unique))
1077 rate_unique = (dbdata_ratelimit_unique *)record;
1078 printf("3 filter epoch: %s\n", print_time(rate_unique->bloom_epoch));
1079 printf("4 test filter membership\n");
1080 printf("5 add element to filter\n");
1085 session = (dbdata_tls_session *)value;
1086 printf("0 time stamp: %s\n", print_time(session->time_stamp));
1087 printf("1 session: .%s\n", session->session);
1092 /* The database is closed after each request */
1101 #endif /* EXIM_FIXDB */
1106 /*************************************************
1107 * The exim_tidydb main program *
1108 *************************************************/
1111 /* Utility program to tidy the contents of an exim database file. There is one
1114 -t <time> expiry time for old records - default 30 days
1116 For backwards compatibility, an -f option is recognized and ignored. (It used
1117 to request a "full" tidy. This version always does the whole job.) */
1120 typedef struct key_item {
1121 struct key_item *next;
1126 int main(int argc, char **cargv)
1128 struct stat statbuf;
1129 int maxkeep = 30 * 24 * 60 * 60;
1130 int dbdata_type, i, oldest, path_len;
1131 key_item *keychain = NULL;
1135 EXIM_CURSOR *cursor;
1136 uschar **argv = USS cargv;
1140 /* Scan the options */
1142 for (i = 1; i < argc; i++)
1144 if (argv[i][0] != '-') break;
1145 if (Ustrcmp(argv[i], "-f") == 0) continue;
1146 if (Ustrcmp(argv[i], "-t") == 0)
1154 if (!isdigit(*s)) usage(US"tidydb", US" [-t <time>]");
1155 (void)sscanf(CS s, "%d%n", &value, &count);
1159 case 'w': value *= 7;
1160 case 'd': value *= 24;
1161 case 'h': value *= 60;
1162 case 'm': value *= 60;
1165 default: usage(US"tidydb", US" [-t <time>]");
1170 else usage(US"tidydb", US" [-t <time>]");
1173 /* Adjust argument values and process arguments */
1178 dbdata_type = check_args(argc, argv, US"tidydb", US" [-t <time>]");
1180 /* Compute the oldest keep time, verify what we are doing, and open the
1183 oldest = time(NULL) - maxkeep;
1184 printf("Tidying Exim hints database %s/db/%s\n", argv[1], argv[2]);
1186 spool_directory = argv[1];
1187 if (!(dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE, TRUE)))
1190 /* Prepare for building file names */
1192 sprintf(CS buffer, "%s/input/", argv[1]);
1193 path_len = Ustrlen(buffer);
1196 /* It appears, by experiment, that it is a bad idea to make changes
1197 to the file while scanning it. Pity the man page doesn't warn you about that.
1198 Therefore, we scan and build a list of all the keys. Then we use that to
1199 read the records and possibly update them. */
1201 for (key = dbfn_scan(dbm, TRUE, &cursor);
1203 key = dbfn_scan(dbm, FALSE, &cursor))
1205 key_item *k = store_get(sizeof(key_item) + Ustrlen(key), is_tainted(key));
1208 Ustrcpy(k->key, key);
1211 /* Now scan the collected keys and operate on the records, resetting
1212 the store each time round. */
1214 for (; keychain && (reset_point = store_mark()); store_reset(reset_point))
1216 dbdata_generic *value;
1218 key = keychain->key;
1219 keychain = keychain->next;
1220 value = dbfn_read_with_length(dbm, key, NULL);
1222 /* A continuation record may have been deleted or renamed already, so
1223 non-existence is not serious. */
1225 if (value == NULL) continue;
1227 /* Delete if too old */
1229 if (value->time_stamp < oldest)
1231 printf("deleted %s (too old)\n", key);
1232 dbfn_delete(dbm, key);
1236 /* Do database-specific tidying for wait databases, and message-
1237 specific tidying for the retry database. */
1239 if (dbdata_type == type_wait)
1241 dbdata_wait *wait = (dbdata_wait *)value;
1242 BOOL update = FALSE;
1244 /* Leave corrupt records alone */
1246 if (wait->count > WAIT_NAME_MAX)
1248 printf("**** Data for %s corrupted\n count=%d=0x%x max=%d\n",
1249 key, wait->count, wait->count, WAIT_NAME_MAX);
1253 /* Loop for renamed continuation records. For each message id,
1254 check to see if the message exists, and if not, remove its entry
1255 from the record. Because of the possibility of split input directories,
1256 we must look in both possible places for a -D file. */
1260 int length = wait->count * MESSAGE_ID_LENGTH;
1262 for (int offset = length - MESSAGE_ID_LENGTH;
1263 offset >= 0; offset -= MESSAGE_ID_LENGTH)
1265 Ustrncpy(buffer+path_len, wait->text + offset, MESSAGE_ID_LENGTH);
1266 sprintf(CS(buffer+path_len + MESSAGE_ID_LENGTH), "-D");
1268 if (Ustat(buffer, &statbuf) != 0)
1270 buffer[path_len] = wait->text[offset+5];
1271 buffer[path_len+1] = '/';
1272 Ustrncpy(buffer+path_len+2, wait->text + offset, MESSAGE_ID_LENGTH);
1273 sprintf(CS(buffer+path_len+2 + MESSAGE_ID_LENGTH), "-D");
1275 if (Ustat(buffer, &statbuf) != 0)
1277 int left = length - offset - MESSAGE_ID_LENGTH;
1278 if (left > 0) Ustrncpy(wait->text + offset,
1279 wait->text + offset + MESSAGE_ID_LENGTH, left);
1281 length -= MESSAGE_ID_LENGTH;
1287 /* If record is empty and the main record, either delete it or rename
1288 the next continuation, repeating if that is also empty. */
1290 if (wait->count == 0 && Ustrchr(key, ':') == NULL)
1292 while (wait->count == 0 && wait->sequence > 0)
1295 dbdata_generic *newvalue;
1296 sprintf(CS newkey, "%s:%d", key, wait->sequence - 1);
1297 newvalue = dbfn_read_with_length(dbm, newkey, NULL);
1298 if (newvalue != NULL)
1301 wait = (dbdata_wait *)newvalue;
1302 dbfn_delete(dbm, newkey);
1303 printf("renamed %s\n", newkey);
1306 else wait->sequence--;
1309 /* If we have ended up with an empty main record, delete it
1310 and break the loop. Otherwise the new record will be scanned. */
1312 if (wait->count == 0 && wait->sequence == 0)
1314 dbfn_delete(dbm, key);
1315 printf("deleted %s (empty)\n", key);
1321 /* If not an empty main record, break the loop */
1326 /* Re-write the record if required */
1330 printf("updated %s\n", key);
1331 dbfn_write(dbm, key, wait, sizeof(dbdata_wait) +
1332 wait->count * MESSAGE_ID_LENGTH);
1336 /* If a retry record's key ends with a message-id, check that that message
1337 still exists; if not, remove this record. */
1339 else if (dbdata_type == type_retry)
1342 int len = Ustrlen(key);
1344 if (len < MESSAGE_ID_LENGTH + 1) continue;
1345 id = key + len - MESSAGE_ID_LENGTH - 1;
1346 if (*id++ != ':') continue;
1348 for (i = 0; i < MESSAGE_ID_LENGTH; i++)
1349 if (i == 6 || i == 13)
1350 { if (id[i] != '-') break; }
1352 { if (!isalnum(id[i])) break; }
1353 if (i < MESSAGE_ID_LENGTH) continue;
1355 Ustrncpy(buffer + path_len, id, MESSAGE_ID_LENGTH);
1356 sprintf(CS(buffer + path_len + MESSAGE_ID_LENGTH), "-D");
1358 if (Ustat(buffer, &statbuf) != 0)
1360 sprintf(CS(buffer + path_len), "%c/%s-D", id[5], id);
1361 if (Ustat(buffer, &statbuf) != 0)
1363 dbfn_delete(dbm, key);
1364 printf("deleted %s (no message)\n", key);
1371 printf("Tidying complete\n");
1375 #endif /* EXIM_TIDYDB */
1377 /* End of exim_dbutil.c */