2 * Copyright (c) 1998-2003, 2006 Sendmail, Inc. and its suppliers.
4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
5 * Copyright (c) 1988, 1993
6 * The Regents of the University of California. All rights reserved.
8 * By using this file, you agree to the terms and conditions set
9 * forth in the LICENSE file which can be found at the top level of
10 * the sendmail distribution.
18 SM_RCSID("@(#)$Id: udb.c,v 8.164 2006/12/19 19:49:51 ca Exp $ (with USERDB)")
20 SM_RCSID("@(#)$Id: udb.c,v 8.164 2006/12/19 19:49:51 ca Exp $ (without USERDB)")
25 #include <sm/sendmail.h>
29 # define DBT struct _data_base_thang_
32 void *data; /* pointer to data */
33 size_t size; /* length of data */
38 ** UDB.C -- interface between sendmail and Berkeley User Data Base.
40 ** This depends on the 4.4BSD db package.
46 char *udb_spec; /* string version of spec */
47 int udb_type; /* type of entry */
48 pid_t udb_pid; /* PID of process which opened db */
49 char *udb_default; /* default host for outgoing mail */
52 # if NETINET || NETINET6
53 /* type UE_REMOTE -- do remote call for lookup */
56 SOCKADDR _udb_addr; /* address */
57 int _udb_timeout; /* timeout */
59 # define udb_addr udb_u.udb_remote._udb_addr
60 # define udb_timeout udb_u.udb_remote._udb_timeout
61 # endif /* NETINET || NETINET6 */
63 /* type UE_FORWARD -- forward message to remote */
66 char *_udb_fwdhost; /* name of forward host */
68 # define udb_fwdhost udb_u.udb_forward._udb_fwdhost
71 /* type UE_FETCH -- lookup in local database */
74 char *_udb_dbname; /* pathname of database */
75 DB *_udb_dbp; /* open database ptr */
77 # define udb_dbname udb_u.udb_lookup._udb_dbname
78 # define udb_dbp udb_u.udb_lookup._udb_dbp
83 # define UDB_EOLIST 0 /* end of list */
84 # define UDB_SKIP 1 /* skip this entry */
85 # define UDB_REMOTE 2 /* look up in remote database */
86 # define UDB_DBFETCH 3 /* look up in local database */
87 # define UDB_FORWARD 4 /* forward to remote host */
88 # define UDB_HESIOD 5 /* look up via hesiod */
90 # define MAXUDBENT 10 /* maximum number of UDB entries */
100 static int hes_udb_get __P((DBT *, DBT *));
102 static char *udbmatch __P((char *, char *, SM_RPOOL_T *));
103 static int _udbx_init __P((ENVELOPE *));
104 static int _udb_parsespec __P((char *, struct udb_option [], int));
107 ** UDBEXPAND -- look up user in database and expand
110 ** a -- address to expand.
111 ** sendq -- pointer to head of sendq to put the expansions in.
112 ** aliaslevel -- the current alias nesting depth.
113 ** e -- the current envelope.
116 ** EX_TEMPFAIL -- if something "odd" happened -- probably due
117 ** to accessing a file on an NFS server that is down.
118 ** EX_OK -- otherwise.
124 static struct udbent UdbEnts[MAXUDBENT + 1];
125 static bool UdbInitialized = false;
128 udbexpand(a, sendq, aliaslevel, e)
132 register ENVELOPE *e;
138 register struct udbent *up;
142 char keybuf[MAXUDBKEY];
144 memset(&key, '\0', sizeof(key));
145 memset(&info, '\0', sizeof(info));
148 sm_dprintf("udbexpand(%s)\n", a->q_paddr);
150 /* make certain we are supposed to send to this address */
151 if (!QS_IS_SENDABLE(a->q_state))
153 e->e_to = a->q_paddr;
155 /* on first call, locate the database */
158 if (_udbx_init(e) == EX_TEMPFAIL)
162 /* short circuit the process if no chance of a match */
163 if (UdbSpec == NULL || UdbSpec[0] == '\0')
166 /* extract user to do userdb matching on */
169 /* short circuit name begins with '\\' since it can't possibly match */
170 /* (might want to treat this as unquoted instead) */
174 /* if name begins with a colon, it indicates our metadata */
178 keylen = sm_strlcpyn(keybuf, sizeof(keybuf), 2, user, ":maildrop");
180 /* if name is too long, assume it won't match */
181 if (keylen >= sizeof(keybuf))
184 /* build actual database key */
187 for (up = UdbEnts; !breakout; up++)
191 char userbuf[MEMCHUNKSIZE];
192 # if HESIOD && HES_GETMAILHOST
194 # endif /* HESIOD && HES_GETMAILHOST */
195 # if defined(NEWDB) && DB_VERSION_MAJOR > 1
197 # endif /* defined(NEWDB) && DB_VERSION_MAJOR > 1 */
201 usersize = sizeof(userbuf);
202 userleft = sizeof(userbuf) - 1;
205 ** Select action based on entry type.
207 ** On dropping out of this switch, "class" should
208 ** explain the type of the data, and "user" should
209 ** contain the user information.
212 switch (up->udb_type)
219 sm_dprintf("udbexpand: trying %s (%d) via db\n",
221 # if DB_VERSION_MAJOR < 2
222 i = (*up->udb_dbp->seq)(up->udb_dbp, &key, &info, R_CURSOR);
223 # else /* DB_VERSION_MAJOR < 2 */
226 # if DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >= 6
227 (errno = (*up->udb_dbp->cursor)(up->udb_dbp,
228 NULL, &dbc, 0)) != 0)
229 # else /* DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >= 6 */
230 (errno = (*up->udb_dbp->cursor)(up->udb_dbp,
232 # endif /* DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >= 6 */
234 if (i != 0 || dbc == NULL ||
235 (errno = dbc->c_get(dbc, &key,
236 &info, DB_SET)) != 0)
238 # endif /* DB_VERSION_MAJOR < 2 */
239 if (i > 0 || info.size <= 0)
242 sm_dprintf("udbexpand: no match on %s (%d)\n",
244 # if DB_VERSION_MAJOR > 1
247 (void) dbc->c_close(dbc);
250 # endif /* DB_VERSION_MAJOR > 1 */
254 sm_dprintf("udbexpand: match %.*s: %.*s\n",
255 (int) key.size, (char *) key.data,
256 (int) info.size, (char *) info.data);
258 a->q_flags &= ~QSELFREF;
259 while (i == 0 && key.size == keylen &&
260 memcmp(key.data, keybuf, keylen) == 0)
264 if (bitset(EF_VRFYONLY, e->e_flags))
266 a->q_state = QS_VERIFIED;
267 # if DB_VERSION_MAJOR > 1
270 (void) dbc->c_close(dbc);
273 # endif /* DB_VERSION_MAJOR > 1 */
278 if (info.size >= userleft - 1)
281 int size = MEMCHUNKSIZE;
283 if (info.size > MEMCHUNKSIZE)
285 nuser = sm_malloc_x(usersize + size);
287 memmove(nuser, user, usersize);
289 sm_free(user); /* XXX */
294 p = &user[strlen(user)];
300 memmove(p, info.data, info.size);
302 userleft -= info.size;
304 /* get the next record */
305 # if DB_VERSION_MAJOR < 2
306 i = (*up->udb_dbp->seq)(up->udb_dbp, &key, &info, R_NEXT);
307 # else /* DB_VERSION_MAJOR < 2 */
309 if ((errno = dbc->c_get(dbc, &key,
310 &info, DB_NEXT)) != 0)
312 # endif /* DB_VERSION_MAJOR < 2 */
315 # if DB_VERSION_MAJOR > 1
318 (void) dbc->c_close(dbc);
321 # endif /* DB_VERSION_MAJOR > 1 */
323 /* if nothing ever matched, try next database */
327 message("expanded to %s", user);
329 sm_syslog(LOG_INFO, e->e_id,
330 "expand %.100s => %s",
332 shortenstring(user, MAXSHORTSTR));
333 naddrs = sendtolist(user, a, sendq, aliaslevel + 1, e);
334 if (naddrs > 0 && !bitset(QSELFREF, a->q_flags))
338 sm_dprintf("udbexpand: QS_EXPANDED ");
339 printaddr(sm_debug_file(), a, false);
341 a->q_state = QS_EXPANDED;
345 syserr("udbexpand: db-get %.*s stat %d",
346 (int) key.size, (char *) key.data, i);
351 ** If this address has a -request address, reflect
352 ** it into the envelope.
355 memset(&key, '\0', sizeof(key));
356 memset(&info, '\0', sizeof(info));
357 (void) sm_strlcpyn(keybuf, sizeof(keybuf), 2, a->q_user,
359 keylen = strlen(keybuf);
363 # if DB_VERSION_MAJOR < 2
364 i = (*up->udb_dbp->get)(up->udb_dbp, &key, &info, 0);
365 # else /* DB_VERSION_MAJOR < 2 */
366 i = errno = (*up->udb_dbp->get)(up->udb_dbp, NULL,
368 # endif /* DB_VERSION_MAJOR < 2 */
369 if (i != 0 || info.size <= 0)
371 a->q_owner = sm_rpool_malloc_x(e->e_rpool,
373 memmove(a->q_owner, info.data, info.size);
374 a->q_owner[info.size] = '\0';
376 /* announce delivery; NORECEIPT bit set later */
377 if (e->e_xfp != NULL)
379 (void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT,
380 "Message delivered to mailing list %s\n",
383 e->e_flags |= EF_SENDRECEIPT;
384 a->q_flags |= QDELIVERED|QEXPANDED;
393 sm_dprintf("udbexpand: trying %s (%d) via hesiod\n",
395 /* look up the key via hesiod */
396 i = hes_udb_get(&key, &info);
399 syserr("udbexpand: hesiod-get %.*s stat %d",
400 (int) key.size, (char *) key.data, i);
403 else if (i > 0 || info.size <= 0)
406 struct hes_postoffice *hp;
407 # endif /* HES_GETMAILHOST */
410 sm_dprintf("udbexpand: no match on %s (%d)\n",
411 (char *) keybuf, (int) keylen);
414 sm_dprintf(" ... trying hes_getmailhost(%s)\n",
416 hp = hes_getmailhost(a->q_user);
419 if (hes_error() == HES_ER_NET)
421 syserr("udbexpand: hesiod-getmail %s stat %d",
422 a->q_user, hes_error());
426 sm_dprintf("hes_getmailhost(%s): %d\n",
427 a->q_user, hes_error());
430 if (strlen(hp->po_name) + strlen(hp->po_host) >
434 sm_dprintf("hes_getmailhost(%s): expansion too long: %.30s@%.30s\n",
441 (void) sm_snprintf(pobuf, sizeof(pobuf),
442 "%s@%s", hp->po_name, hp->po_host);
443 info.size = strlen(info.data);
444 # else /* HES_GETMAILHOST */
446 # endif /* HES_GETMAILHOST */
449 sm_dprintf("udbexpand: match %.*s: %.*s\n",
450 (int) key.size, (char *) key.data,
451 (int) info.size, (char *) info.data);
452 a->q_flags &= ~QSELFREF;
454 if (bitset(EF_VRFYONLY, e->e_flags))
456 a->q_state = QS_VERIFIED;
461 if (info.size >= usersize)
462 user = sm_malloc_x(info.size + 1);
463 memmove(user, info.data, info.size);
464 user[info.size] = '\0';
466 message("hesioded to %s", user);
468 sm_syslog(LOG_INFO, e->e_id,
469 "hesiod %.100s => %s",
471 shortenstring(user, MAXSHORTSTR));
472 naddrs = sendtolist(user, a, sendq, aliaslevel + 1, e);
474 if (naddrs > 0 && !bitset(QSELFREF, a->q_flags))
478 sm_dprintf("udbexpand: QS_EXPANDED ");
479 printaddr(sm_debug_file(), a, false);
481 a->q_state = QS_EXPANDED;
485 ** If this address has a -request address, reflect
486 ** it into the envelope.
489 (void) sm_strlcpyn(keybuf, sizeof(keybuf), 2, a->q_user,
491 keylen = strlen(keybuf);
494 i = hes_udb_get(&key, &info);
495 if (i != 0 || info.size <= 0)
497 a->q_owner = sm_rpool_malloc_x(e->e_rpool,
499 memmove(a->q_owner, info.data, info.size);
500 a->q_owner[info.size] = '\0';
505 /* not yet implemented */
509 if (bitset(EF_VRFYONLY, e->e_flags))
511 a->q_state = QS_VERIFIED;
514 i = strlen(up->udb_fwdhost) + strlen(a->q_user) + 1;
518 user = sm_malloc_x(usersize);
520 (void) sm_strlcpyn(user, usersize, 3,
521 a->q_user, "@", up->udb_fwdhost);
522 message("expanded to %s", user);
523 a->q_flags &= ~QSELFREF;
524 naddrs = sendtolist(user, a, sendq, aliaslevel + 1, e);
525 if (naddrs > 0 && !bitset(QSELFREF, a->q_flags))
529 sm_dprintf("udbexpand: QS_EXPANDED ");
530 printaddr(sm_debug_file(), a, false);
532 a->q_state = QS_EXPANDED;
542 /* unknown entry type */
545 /* XXX if an exception occurs, there is a storage leak */
547 sm_free(user); /* XXX */
552 ** UDBSENDER -- return canonical external name of sender, given local name
555 ** sender -- the name of the sender on the local machine.
556 ** rpool -- resource pool from which to allocate result
559 ** The external name for this sender, if derivable from the
560 ** database. Storage allocated from rpool.
561 ** NULL -- if nothing is changed from the database.
568 udbsender(sender, rpool)
572 return udbmatch(sender, "mailname", rpool);
575 ** UDBMATCH -- match user in field, return result of lookup.
578 ** user -- the name of the user.
579 ** field -- the field to lookup.
580 ** rpool -- resource pool from which to allocate result
583 ** The external name for this sender, if derivable from the
584 ** database. Storage allocated from rpool.
585 ** NULL -- if nothing is changed from the database.
592 udbmatch(user, field, rpool)
598 register struct udbent *up;
602 char keybuf[MAXUDBKEY];
605 sm_dprintf("udbmatch(%s, %s)\n", user, field);
609 if (_udbx_init(CurEnv) == EX_TEMPFAIL)
613 /* short circuit if no spec */
614 if (UdbSpec == NULL || UdbSpec[0] == '\0')
617 /* short circuit name begins with '\\' since it can't possibly match */
621 /* long names can never match and are a pain to deal with */
623 if (i < sizeof("maildrop"))
624 i = sizeof("maildrop");
625 if ((strlen(user) + i) > sizeof(keybuf) - 4)
628 /* names beginning with colons indicate metadata */
632 /* build database key */
633 (void) sm_strlcpyn(keybuf, sizeof(keybuf), 3, user, ":", field);
634 keylen = strlen(keybuf);
636 for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++)
639 ** Select action based on entry type.
642 switch (up->udb_type)
646 memset(&key, '\0', sizeof(key));
647 memset(&info, '\0', sizeof(info));
650 # if DB_VERSION_MAJOR < 2
651 i = (*up->udb_dbp->get)(up->udb_dbp, &key, &info, 0);
652 # else /* DB_VERSION_MAJOR < 2 */
653 i = errno = (*up->udb_dbp->get)(up->udb_dbp, NULL,
655 # endif /* DB_VERSION_MAJOR < 2 */
656 if (i != 0 || info.size <= 0)
659 sm_dprintf("udbmatch: no match on %s (%d) via db\n",
664 p = sm_rpool_malloc_x(rpool, info.size + 1);
665 memmove(p, info.data, info.size);
668 sm_dprintf("udbmatch ==> %s\n", p);
676 i = hes_udb_get(&key, &info);
677 if (i != 0 || info.size <= 0)
680 sm_dprintf("udbmatch: no match on %s (%d) via hesiod\n",
685 p = sm_rpool_malloc_x(rpool, info.size + 1);
686 memmove(p, info.data, info.size);
689 sm_dprintf("udbmatch ==> %s\n", p);
695 if (strcmp(field, "mailname") != 0)
699 ** Nothing yet. Search again for a default case. But only
700 ** use it if we also have a forward (:maildrop) pointer already
704 /* build database key */
705 (void) sm_strlcpyn(keybuf, sizeof(keybuf), 2, user, ":maildrop");
706 keylen = strlen(keybuf);
708 for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++)
710 switch (up->udb_type)
714 /* get the default case for this database */
715 if (up->udb_default == NULL)
717 memset(&key, '\0', sizeof(key));
718 memset(&info, '\0', sizeof(info));
719 key.data = ":default:mailname";
720 key.size = strlen(key.data);
721 # if DB_VERSION_MAJOR < 2
722 i = (*up->udb_dbp->get)(up->udb_dbp,
724 # else /* DB_VERSION_MAJOR < 2 */
725 i = errno = (*up->udb_dbp->get)(up->udb_dbp,
728 # endif /* DB_VERSION_MAJOR < 2 */
729 if (i != 0 || info.size <= 0)
731 /* no default case */
732 up->udb_default = "";
736 /* save the default case */
737 up->udb_default = sm_pmalloc_x(info.size + 1);
738 memmove(up->udb_default, info.data, info.size);
739 up->udb_default[info.size] = '\0';
741 else if (up->udb_default[0] == '\0')
744 /* we have a default case -- verify user:maildrop */
745 memset(&key, '\0', sizeof(key));
746 memset(&info, '\0', sizeof(info));
749 # if DB_VERSION_MAJOR < 2
750 i = (*up->udb_dbp->get)(up->udb_dbp, &key, &info, 0);
751 # else /* DB_VERSION_MAJOR < 2 */
752 i = errno = (*up->udb_dbp->get)(up->udb_dbp, NULL,
754 # endif /* DB_VERSION_MAJOR < 2 */
755 if (i != 0 || info.size <= 0)
757 /* nope -- no aliasing for this user */
761 /* they exist -- build the actual address */
762 i = strlen(user) + strlen(up->udb_default) + 2;
763 p = sm_rpool_malloc_x(rpool, i);
764 (void) sm_strlcpyn(p, i, 3, user, "@", up->udb_default);
766 sm_dprintf("udbmatch ==> %s\n", p);
772 /* get the default case for this database */
773 if (up->udb_default == NULL)
775 key.data = ":default:mailname";
776 key.size = strlen(key.data);
777 i = hes_udb_get(&key, &info);
779 if (i != 0 || info.size <= 0)
781 /* no default case */
782 up->udb_default = "";
786 /* save the default case */
787 up->udb_default = sm_pmalloc_x(info.size + 1);
788 memmove(up->udb_default, info.data, info.size);
789 up->udb_default[info.size] = '\0';
791 else if (up->udb_default[0] == '\0')
794 /* we have a default case -- verify user:maildrop */
797 i = hes_udb_get(&key, &info);
798 if (i != 0 || info.size <= 0)
800 /* nope -- no aliasing for this user */
804 /* they exist -- build the actual address */
805 i = strlen(user) + strlen(up->udb_default) + 2;
806 p = sm_rpool_malloc_x(rpool, i);
807 (void) sm_strlcpyn(p, i, 3, user, "@", up->udb_default);
809 sm_dprintf("udbmatch ==> %s\n", p);
816 /* still nothing.... too bad */
820 ** UDB_MAP_LOOKUP -- look up arbitrary entry in user database map
823 ** map -- the map being queried.
824 ** name -- the name to look up.
825 ** av -- arguments to the map lookup.
826 ** statp -- to get any error status.
829 ** NULL if name not found in map.
830 ** The rewritten name otherwise.
835 udb_map_lookup(map, name, av, statp)
843 char *SM_NONVOLATILE result = NULL;
844 char keybuf[MAXNAME + 1];
846 if (tTd(28, 20) || tTd(38, 20))
847 sm_dprintf("udb_map_lookup(%s, %s)\n", map->map_mname, name);
849 if (bitset(MF_NOFOLDCASE, map->map_mflags))
855 int keysize = strlen(name);
857 if (keysize > sizeof(keybuf) - 1)
858 keysize = sizeof(keybuf) - 1;
859 memmove(keybuf, name, keysize);
860 keybuf[keysize] = '\0';
864 val = udbmatch(key, map->map_file, NULL);
868 if (bitset(MF_MATCHONLY, map->map_mflags))
869 result = map_rewrite(map, name, strlen(name), NULL);
871 result = map_rewrite(map, val, strlen(val), av);
878 ** _UDBX_INIT -- parse the UDB specification, opening any valid entries.
881 ** e -- the current envelope.
884 ** EX_TEMPFAIL -- if it appeared it couldn't get hold of a
885 ** database due to a host being down or some similar
886 ** (recoverable) situation.
887 ** EX_OK -- otherwise.
890 ** Fills in the UdbEnts structure from UdbSpec.
893 # define MAXUDBOPTS 27
901 register struct udbent *up;
906 # ifdef UDB_DEFAULT_SPEC
908 UdbSpec = UDB_DEFAULT_SPEC;
909 # endif /* UDB_DEFAULT_SPEC */
917 struct udb_option opts[MAXUDBOPTS + 1];
919 while (*p == ' ' || *p == '\t' || *p == ',')
928 if (ents >= MAXUDBENT)
930 syserr("Maximum number of UDB entries exceeded");
934 /* extract options */
935 (void) _udb_parsespec(spec, opts, MAXUDBOPTS);
938 ** Decode database specification.
940 ** In the sendmail tradition, the leading character
941 ** defines the semantics of the rest of the entry.
943 ** @hostname -- forward email to the indicated host.
944 ** This should be the last in the list,
945 ** since it always matches the input.
946 ** /dbname -- search the named database on the local
947 ** host using the Berkeley db package.
948 ** Hesiod -- search the named database with BIND
949 ** using the MIT Hesiod package.
954 case '@': /* forward to remote host */
955 up->udb_type = UDB_FORWARD;
956 up->udb_pid = CurrentPid;
957 up->udb_fwdhost = spec + 1;
963 case 'h': /* use hesiod */
965 if (sm_strcasecmp(spec, "hesiod") != 0)
967 up->udb_type = UDB_HESIOD;
968 up->udb_pid = CurrentPid;
975 case '/': /* look up remote name */
977 if (l > 3 && strcmp(&spec[l - 3], ".db") == 0)
979 up->udb_dbname = spec;
983 up->udb_dbname = sm_pmalloc_x(l + 4);
984 (void) sm_strlcpyn(up->udb_dbname, l + 4, 2,
988 # if DB_VERSION_MAJOR < 2
989 up->udb_dbp = dbopen(up->udb_dbname, O_RDONLY,
990 0644, DB_BTREE, NULL);
991 # else /* DB_VERSION_MAJOR < 2 */
993 int flags = DB_RDONLY;
994 # if DB_VERSION_MAJOR > 2
996 # endif /* DB_VERSION_MAJOR > 2 */
998 SM_DB_FLAG_ADD(flags);
1000 # if DB_VERSION_MAJOR > 2
1001 ret = db_create(&up->udb_dbp, NULL, 0);
1004 (void) up->udb_dbp->close(up->udb_dbp,
1010 ret = up->udb_dbp->open(up->udb_dbp,
1019 #ifdef DB_OLD_VERSION
1020 if (ret == DB_OLD_VERSION)
1022 #endif /* DB_OLD_VERSION */
1023 (void) up->udb_dbp->close(up->udb_dbp, 0);
1028 # else /* DB_VERSION_MAJOR > 2 */
1029 errno = db_open(up->udb_dbname, DB_BTREE,
1031 NULL, &up->udb_dbp);
1032 # endif /* DB_VERSION_MAJOR > 2 */
1034 # endif /* DB_VERSION_MAJOR < 2 */
1035 if (up->udb_dbp == NULL)
1039 int save_errno = errno;
1041 # if DB_VERSION_MAJOR < 2
1042 sm_dprintf("dbopen(%s): %s\n",
1043 # else /* DB_VERSION_MAJOR < 2 */
1044 sm_dprintf("db_open(%s): %s\n",
1045 # endif /* DB_VERSION_MAJOR < 2 */
1047 sm_errstring(errno));
1050 if (errno != ENOENT && errno != EACCES)
1053 sm_syslog(LOG_ERR, e->e_id,
1054 # if DB_VERSION_MAJOR < 2
1056 # else /* DB_VERSION_MAJOR < 2 */
1058 # endif /* DB_VERSION_MAJOR < 2 */
1060 sm_errstring(errno));
1061 up->udb_type = UDB_EOLIST;
1062 if (up->udb_dbname != spec)
1063 sm_free(up->udb_dbname); /* XXX */
1066 if (up->udb_dbname != spec)
1067 sm_free(up->udb_dbname); /* XXX */
1072 # if DB_VERSION_MAJOR < 2
1073 sm_dprintf("_udbx_init: dbopen(%s)\n",
1074 # else /* DB_VERSION_MAJOR < 2 */
1075 sm_dprintf("_udbx_init: db_open(%s)\n",
1076 # endif /* DB_VERSION_MAJOR < 2 */
1079 up->udb_type = UDB_DBFETCH;
1080 up->udb_pid = CurrentPid;
1089 # endif /* HESIOD */
1090 syserr("Unknown UDB spec %s", spec);
1094 up->udb_type = UDB_EOLIST;
1098 for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++)
1100 switch (up->udb_type)
1103 sm_dprintf("REMOTE: addr %s, timeo %d\n",
1104 anynet_ntoa((SOCKADDR *) &up->udb_addr),
1110 sm_dprintf("FETCH: file %s\n",
1113 sm_dprintf("FETCH\n");
1118 sm_dprintf("FORWARD: host %s\n",
1123 sm_dprintf("HESIOD\n");
1127 sm_dprintf("UNKNOWN\n");
1133 UdbInitialized = true;
1138 ** On temporary failure, back out anything we've already done
1143 for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++)
1145 if (up->udb_type == UDB_DBFETCH)
1147 # if DB_VERSION_MAJOR < 2
1148 (*up->udb_dbp->close)(up->udb_dbp);
1149 # else /* DB_VERSION_MAJOR < 2 */
1150 errno = (*up->udb_dbp->close)(up->udb_dbp, 0);
1151 # endif /* DB_VERSION_MAJOR < 2 */
1153 sm_dprintf("_udbx_init: db->close(%s)\n",
1162 _udb_parsespec(udbspec, opt, maxopts)
1164 struct udb_option opt[];
1167 register char *spec;
1168 register char *spec_end;
1169 register int optnum;
1171 spec_end = strchr(udbspec, ':');
1172 for (optnum = 0; optnum < maxopts && (spec = spec_end) != NULL; optnum++)
1176 while (isascii(*spec) && isspace(*spec))
1178 spec_end = strchr(spec, ':');
1179 if (spec_end != NULL)
1182 opt[optnum].udbo_name = spec;
1183 opt[optnum].udbo_val = NULL;
1184 p = strchr(spec, '=');
1186 opt[optnum].udbo_val = ++p;
1191 ** _UDBX_CLOSE -- close all file based UDB entries.
1204 if (!UdbInitialized)
1207 for (up = UdbEnts; up->udb_type != UDB_EOLIST; up++)
1209 if (up->udb_pid != CurrentPid)
1213 if (up->udb_type == UDB_DBFETCH)
1215 # if DB_VERSION_MAJOR < 2
1216 (*up->udb_dbp->close)(up->udb_dbp);
1217 # else /* DB_VERSION_MAJOR < 2 */
1218 errno = (*up->udb_dbp->close)(up->udb_dbp, 0);
1219 # endif /* DB_VERSION_MAJOR < 2 */
1222 sm_dprintf("_udbx_init: db->close(%s)\n",
1231 hes_udb_get(key, info)
1237 char kbuf[MAXUDBKEY + 1];
1239 if (sm_strlcpy(kbuf, key->data, sizeof(kbuf)) >= sizeof(kbuf))
1242 type = strrchr(name, ':');
1246 if (strchr(name, '@') != NULL)
1250 sm_dprintf("hes_udb_get(%s, %s)\n", name, type);
1252 /* make the hesiod query */
1254 if (HesiodContext == NULL && hesiod_init(&HesiodContext) != 0)
1256 hp = hesiod_resolve(HesiodContext, name, type);
1257 # else /* HESIOD_INIT */
1258 hp = hes_resolve(name, type);
1259 # endif /* HESIOD_INIT */
1266 hesiod_free_list(HesiodContext, hp);
1267 if (errno == ECONNREFUSED || errno == EMSGSIZE)
1271 # else /* HESIOD_INIT */
1272 if (hp == NULL || hp[0] == NULL)
1274 /* network problem or timeout */
1275 if (hes_error() == HES_ER_NET)
1280 # endif /* HESIOD_INIT */
1284 ** If there are multiple matches, just return the
1287 ** XXX These should really be returned; for example,
1288 ** XXX it is legal for :maildrop to be multi-valued.
1292 info->size = (size_t) strlen(info->data);
1296 sm_dprintf("hes_udb_get => %s\n", *hp);
1300 # endif /* HESIOD */
1305 udbexpand(a, sendq, aliaslevel, e)