1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Many thanks to Stuart Lynne for contributing the original code for this
9 driver. Further contributions from Michael Haardt, Brian Candler, Barry
10 Pederson, Peter Savitch and Christian Kellner. Particular thanks to Brian for
11 researching how to handle the different kinds of error. */
15 #include "lf_functions.h"
18 /* Include LDAP headers. The code below uses some "old" LDAP interfaces that
19 are deprecated in OpenLDAP. I don't know their status in other LDAP
20 implementations. LDAP_DEPRECATED causes their prototypes to be defined in
23 #define LDAP_DEPRECATED 1
29 /* Annoyingly, the different LDAP libraries handle errors in different ways,
30 and some other things too. There doesn't seem to be an automatic way of
31 distinguishing between them. Local/Makefile should contain a setting of
32 LDAP_LIB_TYPE, which in turn causes appropriate macros to be defined for the
33 different kinds. Those that matter are:
36 LDAP_LIB_SOLARIS with synonym LDAP_LIB_SOLARIS7
39 These others may be defined, but are in fact the default, so are not tested:
45 #if defined(LDAP_LIB_SOLARIS7) && ! defined(LDAP_LIB_SOLARIS)
46 #define LDAP_LIB_SOLARIS
50 /* Just in case LDAP_NO_LIMIT is not defined by some of these libraries. */
53 #define LDAP_NO_LIMIT 0
57 /* Just in case LDAP_DEREF_NEVER is not defined */
59 #ifndef LDAP_DEREF_NEVER
60 #define LDAP_DEREF_NEVER 0
64 /* Four types of LDAP search are implemented */
66 #define SEARCH_LDAP_MULTIPLE 0 /* Get attributes from multiple entries */
67 #define SEARCH_LDAP_SINGLE 1 /* Get attributes from one entry only */
68 #define SEARCH_LDAP_DN 2 /* Get just the DN from one entry */
69 #define SEARCH_LDAP_AUTH 3 /* Just checking for authentication */
71 /* In all 4 cases, the DN is left in $ldap_dn (which post-dates the
72 SEARCH_LDAP_DN lookup). */
75 /* Structure and anchor for caching connections. */
77 typedef struct ldap_connection {
78 struct ldap_connection *next;
84 BOOL is_start_tls_called;
88 static LDAP_CONNECTION *ldap_connections = NULL;
92 /*************************************************
93 * Internal search function *
94 *************************************************/
96 /* This is the function that actually does the work. It is called (indirectly
97 via control_ldap_search) from eldap_find(), eldapauth_find(), eldapdn_find(),
98 and eldapm_find(), with a difference in the "search_type" argument.
100 The case of eldapauth_find() is special in that all it does is do
101 authentication, returning OK or FAIL as appropriate. This isn't used as a
102 lookup. Instead, it is called from expand.c as an expansion condition test.
104 The DN from a successful lookup is placed in $ldap_dn. This feature postdates
105 the provision of the SEARCH_LDAP_DN facility for returning just the DN as the
109 ldap_url the URL to be looked up
110 server server host name, when URL contains none
111 s_port server port, used when URL contains no name
112 search_type SEARCH_LDAP_MULTIPLE allows values from multiple entries
113 SEARCH_LDAP_SINGLE allows values from one entry only
114 SEARCH_LDAP_DN gets the DN from one entry
115 res set to point at the result (not used for ldapauth)
116 errmsg set to point a message if result is not OK
117 defer_break set TRUE if no more servers to be tried after a DEFER
118 user user name for authentication, or NULL
119 password password for authentication, or NULL
120 sizelimit max number of entries returned, or 0 for no limit
121 timelimit max time to wait, or 0 for no limit
122 tcplimit max time for network activity, e.g. connect, or 0 for OS default
123 deference the dereference option, which is one of
124 LDAP_DEREF_{NEVER,SEARCHING,FINDING,ALWAYS}
125 referrals the referral option, which is LDAP_OPT_ON or LDAP_OPT_OFF
127 Returns: OK or FAIL or DEFER
128 FAIL is given only if a lookup was performed successfully, but
133 perform_ldap_search(const uschar *ldap_url, uschar *server, int s_port,
134 int search_type, uschar **res, uschar **errmsg, BOOL *defer_break,
135 uschar *user, uschar *password, int sizelimit, int timelimit, int tcplimit,
136 int dereference, void *referrals)
138 LDAPURLDesc *ludp = NULL;
139 LDAPMessage *result = NULL;
141 LDAP_CONNECTION *lcp;
143 struct timeval timeout;
144 struct timeval *timeoutptr = NULL;
148 gstring * data = NULL;
155 uschar *error1 = NULL; /* string representation of errcode (static) */
156 uschar *error2 = NULL; /* error message from the server */
157 uschar *matched = NULL; /* partially matched DN */
159 int attrs_requested = 0;
160 int error_yield = DEFER;
162 int rc, ldap_rc, ldap_parse_rc;
165 BOOL attribute_found = FALSE;
169 debug_printf("perform_ldap_search: ldap%s URL = \"%s\" server=%s port=%d "
170 "sizelimit=%d timelimit=%d tcplimit=%d\n",
171 search_type == SEARCH_LDAP_MULTIPLE ? "m" :
172 search_type == SEARCH_LDAP_DN ? "dn" :
173 search_type == SEARCH_LDAP_AUTH ? "auth" : "",
174 ldap_url, server, s_port, sizelimit, timelimit, tcplimit);
176 /* Check if LDAP thinks the URL is a valid LDAP URL. We assume that if the LDAP
177 library that is in use doesn't recognize, say, "ldapi", it will barf here. */
179 if (!ldap_is_ldap_url(CS ldap_url))
181 *errmsg = string_sprintf("ldap_is_ldap_url: not an LDAP url \"%s\"\n",
183 goto RETURN_ERROR_BREAK;
188 if ((rc = ldap_url_parse(CS ldap_url, &ludp)) != 0)
190 *errmsg = string_sprintf("ldap_url_parse: (error %d) parsing \"%s\"\n", rc,
192 goto RETURN_ERROR_BREAK;
195 /* If the host name is empty, take it from the separate argument, if one is
196 given. OpenLDAP 2.0.6 sets an unset hostname to "" rather than empty, but
197 expects NULL later in ldap_init() to mean "default", annoyingly. In OpenLDAP
198 2.0.11 this has changed (it uses NULL). */
200 if ((!ludp->lud_host || !ludp->lud_host[0]) && server)
207 host = US ludp->lud_host;
208 if (host && !host[0]) host = NULL;
209 port = ludp->lud_port;
212 DEBUG(D_lookup) debug_printf("after ldap_url_parse: host=%s port=%d\n",
215 if (port == 0) port = LDAP_PORT; /* Default if none given */
216 sprintf(CS porttext, ":%d", port); /* For messages */
218 /* If the "host name" is actually a path, we are going to connect using a Unix
219 socket, regardless of whether "ldapi" was actually specified or not. This means
220 that a Unix socket can be declared in eldap_default_servers, and "traditional"
221 LDAP queries using just "ldap" can be used ("ldaps" is similarly overridden).
222 The path may start with "/" or it may already be escaped as "%2F" if it was
223 actually declared that way in eldap_default_servers. (I did it that way the
224 first time.) If the host name is not a path, the use of "ldapi" causes an
225 error, except in the default case. (But lud_scheme doesn't seem to exist in
230 if ((host[0] == '/' || Ustrncmp(host, "%2F", 3) == 0))
233 porttext[0] = 0; /* Remove port from messages */
236 #if defined LDAP_LIB_OPENLDAP2
237 else if (strncmp(ludp->lud_scheme, "ldapi", 5) == 0)
239 *errmsg = string_sprintf("ldapi requires an absolute path (\"%s\" given)",
246 /* Count the attributes; we need this later to tell us how to format results */
248 for (attrp = USS ludp->lud_attrs; attrp && *attrp; attrp++)
251 /* See if we can find a cached connection to this host. The port is not
252 relevant for ldapi. The host name pointer is set to NULL if no host was given
253 (implying the library default), rather than to the empty string. Note that in
254 this case, there is no difference between ldap and ldapi. */
256 for (lcp = ldap_connections; lcp; lcp = lcp->next)
258 if ((host == NULL) != (lcp->host == NULL) ||
259 (host != NULL && strcmpic(lcp->host, host) != 0))
261 if (ldapi || port == lcp->port) break;
264 /* Use this network timeout in any requests. */
268 timeout.tv_sec = tcplimit;
270 timeoutptr = &timeout;
273 /* If no cached connection found, we must open a connection to the server. If
274 the server name is actually an absolute path, we set ldapi=TRUE above. This
275 requests connection via a Unix socket. However, as far as I know, only OpenLDAP
276 supports the use of sockets, and the use of ldap_initialize(). */
282 #ifdef LDAP_OPT_X_TLS_NEWCTX
286 LDAP *ldsetctx = NULL;
290 /* --------------------------- OpenLDAP ------------------------ */
292 /* There seems to be a preference under OpenLDAP for ldap_initialize()
293 instead of ldap_init(), though I have as yet been unable to find
294 documentation that says this. (OpenLDAP documentation is sparse to
295 non-existent). So we handle OpenLDAP differently here. Also, support for
296 ldapi seems to be OpenLDAP-only at present. */
298 #ifdef LDAP_LIB_OPENLDAP2
300 /* We now need an empty string for the default host. Get some store in which
301 to build a URL for ldap_initialize(). In the ldapi case, it can't be bigger
302 than (9 + 3*Ustrlen(shost)), whereas in the other cases it can't be bigger
303 than the host name + "ldaps:///" plus : and a port number, say 20 + the
304 length of the host name. What we get should accommodate both, easily. */
306 uschar *shost = (host == NULL)? US"" : host;
307 uschar *init_url = store_get(20 + 3 * Ustrlen(shost));
310 /* Handle connection via Unix socket ("ldapi"). We build a basic LDAP URI to
311 contain the path name, with slashes escaped as %2F. */
316 init_ptr = init_url + 8;
317 Ustrcpy(init_url, "ldapi://");
318 while ((ch = *shost++))
320 { Ustrncpy(init_ptr, "%2F", 3); init_ptr += 3; }
326 /* This is not an ldapi call. Just build a URI with the protocol type, host
331 init_ptr = Ustrchr(ldap_url, '/');
332 Ustrncpy(init_url, ldap_url, init_ptr - ldap_url);
333 init_ptr = init_url + (init_ptr - ldap_url);
334 sprintf(CS init_ptr, "//%s:%d/", shost, port);
337 /* Call ldap_initialize() and check the result */
339 DEBUG(D_lookup) debug_printf("ldap_initialize with URL %s\n", init_url);
340 if ((rc = ldap_initialize(&ld, CS init_url)) != LDAP_SUCCESS)
342 *errmsg = string_sprintf("ldap_initialize: (error %d) URL \"%s\"\n",
346 store_reset(init_url); /* Might as well save memory when we can */
349 /* ------------------------- Not OpenLDAP ---------------------- */
351 /* For libraries other than OpenLDAP, use ldap_init(). */
353 #else /* LDAP_LIB_OPENLDAP2 */
354 ld = ldap_init(CS host, port);
355 #endif /* LDAP_LIB_OPENLDAP2 */
357 /* -------------------------------------------------------------- */
360 /* Handle failure to initialize */
364 *errmsg = string_sprintf("failed to initialize for LDAP server %s%s - %s",
365 host, porttext, strerror(errno));
369 #ifdef LDAP_OPT_X_TLS_NEWCTX
373 /* Set the TCP connect time limit if available. This is something that is
374 in Netscape SDK v4.1; I don't know about other libraries. */
376 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT
379 int timeout1000 = tcplimit*1000;
380 ldap_set_option(ld, LDAP_X_OPT_CONNECT_TIMEOUT, (void *)&timeout1000);
384 int notimeout = LDAP_X_IO_TIMEOUT_NO_TIMEOUT;
385 ldap_set_option(ld, LDAP_X_OPT_CONNECT_TIMEOUT, (void *)¬imeout);
389 /* Set the TCP connect timeout. This works with OpenLDAP 2.2.14. */
391 #ifdef LDAP_OPT_NETWORK_TIMEOUT
393 ldap_set_option(ld, LDAP_OPT_NETWORK_TIMEOUT, (void *)timeoutptr);
396 /* I could not get TLS to work until I set the version to 3. That version
397 seems to be the default nowadays. The RFC is dated 1997, so I would hope
398 that all the LDAP libraries support it. Therefore, if eldap_version hasn't
399 been set, go for v3 if we can. */
401 if (eldap_version < 0)
404 eldap_version = LDAP_VERSION3;
410 #ifdef LDAP_OPT_PROTOCOL_VERSION
411 ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, (void *)&eldap_version);
414 DEBUG(D_lookup) debug_printf("initialized for LDAP (v%d) server %s%s\n",
415 eldap_version, host, porttext);
417 /* If not using ldapi and TLS is available, set appropriate TLS options: hard
418 for "ldaps" and soft otherwise. */
420 #ifdef LDAP_OPT_X_TLS
424 # ifdef LDAP_OPT_X_TLS_REQUIRE_CERT
425 if (eldap_require_cert)
428 Ustrcmp(eldap_require_cert, "hard") == 0 ? LDAP_OPT_X_TLS_HARD
429 : Ustrcmp(eldap_require_cert, "demand") == 0 ? LDAP_OPT_X_TLS_DEMAND
430 : Ustrcmp(eldap_require_cert, "allow") == 0 ? LDAP_OPT_X_TLS_ALLOW
431 : Ustrcmp(eldap_require_cert, "try") == 0 ? LDAP_OPT_X_TLS_TRY
432 : LDAP_OPT_X_TLS_NEVER;
435 debug_printf("Require certificate overrides LDAP_OPT_X_TLS option (%d)\n",
439 # endif /* LDAP_OPT_X_TLS_REQUIRE_CERT */
440 if (strncmp(ludp->lud_scheme, "ldaps", 5) == 0)
442 tls_option = LDAP_OPT_X_TLS_HARD;
444 debug_printf("LDAP_OPT_X_TLS_HARD set due to ldaps:// URI\n");
448 tls_option = LDAP_OPT_X_TLS_TRY;
450 debug_printf("LDAP_OPT_X_TLS_TRY set due to ldap:// URI\n");
452 ldap_set_option(ld, LDAP_OPT_X_TLS, (void *)&tls_option);
454 #endif /* LDAP_OPT_X_TLS */
456 #ifdef LDAP_OPT_X_TLS_CACERTFILE
457 if (eldap_ca_cert_file)
458 ldap_set_option(ldsetctx, LDAP_OPT_X_TLS_CACERTFILE, eldap_ca_cert_file);
460 #ifdef LDAP_OPT_X_TLS_CACERTDIR
461 if (eldap_ca_cert_dir)
462 ldap_set_option(ldsetctx, LDAP_OPT_X_TLS_CACERTDIR, eldap_ca_cert_dir);
464 #ifdef LDAP_OPT_X_TLS_CERTFILE
466 ldap_set_option(ldsetctx, LDAP_OPT_X_TLS_CERTFILE, eldap_cert_file);
468 #ifdef LDAP_OPT_X_TLS_KEYFILE
470 ldap_set_option(ldsetctx, LDAP_OPT_X_TLS_KEYFILE, eldap_cert_key);
472 #ifdef LDAP_OPT_X_TLS_CIPHER_SUITE
473 if (eldap_cipher_suite)
474 ldap_set_option(ldsetctx, LDAP_OPT_X_TLS_CIPHER_SUITE, eldap_cipher_suite);
476 #ifdef LDAP_OPT_X_TLS_REQUIRE_CERT
477 if (eldap_require_cert)
480 Ustrcmp(eldap_require_cert, "hard") == 0 ? LDAP_OPT_X_TLS_HARD
481 : Ustrcmp(eldap_require_cert, "demand") == 0 ? LDAP_OPT_X_TLS_DEMAND
482 : Ustrcmp(eldap_require_cert, "allow") == 0 ? LDAP_OPT_X_TLS_ALLOW
483 : Ustrcmp(eldap_require_cert, "try") == 0 ? LDAP_OPT_X_TLS_TRY
484 : LDAP_OPT_X_TLS_NEVER;
486 /* This ldap handle is set at compile time based on client libs. Older
487 * versions want it to be global and newer versions can force a reload
488 * of the TLS context (to reload these settings we are changing from the
489 * default that loaded at instantiation). */
490 rc = ldap_set_option(ldsetctx, LDAP_OPT_X_TLS_REQUIRE_CERT, &cert_option);
493 debug_printf("Unable to set TLS require cert_option(%d) globally: %s\n",
494 cert_option, ldap_err2string(rc));
497 #ifdef LDAP_OPT_X_TLS_NEWCTX
498 if ((rc = ldap_set_option(ldsetctx, LDAP_OPT_X_TLS_NEWCTX, &am_server)))
500 debug_printf("Unable to reload TLS context %d: %s\n",
501 rc, ldap_err2string(rc));
504 /* Now add this connection to the chain of cached connections */
506 lcp = store_get(sizeof(LDAP_CONNECTION));
507 lcp->host = (host == NULL)? NULL : string_copy(host);
510 lcp->password = NULL;
513 lcp->next = ldap_connections;
514 lcp->is_start_tls_called = FALSE;
515 ldap_connections = lcp;
518 /* Found cached connection */
522 debug_printf("re-using cached connection to LDAP server %s%s\n",
525 /* Bind with the user/password supplied, or an anonymous bind if these values
526 are NULL, unless a cached connection is already bound with the same values. */
529 || !lcp->user && user
530 || lcp->user && !user
531 || lcp->user && user && Ustrcmp(lcp->user, user) != 0
532 || !lcp->password && password
533 || lcp->password && !password
534 || lcp->password && password && Ustrcmp(lcp->password, password) != 0
537 DEBUG(D_lookup) debug_printf("%sbinding with user=%s password=%s\n",
538 lcp->bound ? "re-" : "", user, password);
540 if (eldap_start_tls && !lcp->is_start_tls_called && !ldapi)
542 #if defined(LDAP_OPT_X_TLS) && !defined(LDAP_LIB_SOLARIS)
543 /* The Oracle LDAP libraries (LDAP_LIB_TYPE=SOLARIS) don't support this.
544 * Note: moreover, they appear to now define LDAP_OPT_X_TLS and still not
545 * export an ldap_start_tls_s symbol.
547 if ( (rc = ldap_start_tls_s(lcp->ld, NULL, NULL)) != LDAP_SUCCESS)
549 *errmsg = string_sprintf("failed to initiate TLS processing on an "
550 "LDAP session to server %s%s - ldap_start_tls_s() returned %d:"
551 " %s", host, porttext, rc, ldap_err2string(rc));
554 lcp->is_start_tls_called = TRUE;
556 DEBUG(D_lookup) debug_printf("TLS initiation not supported with this Exim"
557 " and your LDAP library.\n");
560 if ((msgid = ldap_bind(lcp->ld, CS user, CS password, LDAP_AUTH_SIMPLE))
563 *errmsg = string_sprintf("failed to bind the LDAP connection to server "
564 "%s%s - ldap_bind() returned -1", host, porttext);
568 if ((rc = ldap_result(lcp->ld, msgid, 1, timeoutptr, &result)) <= 0)
570 *errmsg = string_sprintf("failed to bind the LDAP connection to server "
571 "%s%s - LDAP error: %s", host, porttext,
572 rc == -1 ? "result retrieval failed" : "timeout" );
577 rc = ldap_result2error(lcp->ld, result, 0);
579 /* Invalid credentials when just checking credentials returns FAIL. This
580 stops any further servers being tried. */
582 if (search_type == SEARCH_LDAP_AUTH && rc == LDAP_INVALID_CREDENTIALS)
585 debug_printf("Invalid credentials: ldapauth returns FAIL\n");
587 goto RETURN_ERROR_NOMSG;
590 /* Otherwise we have a problem that doesn't stop further servers from being
593 if (rc != LDAP_SUCCESS)
595 *errmsg = string_sprintf("failed to bind the LDAP connection to server "
596 "%s%s - LDAP error %d: %s", host, porttext, rc, ldap_err2string(rc));
600 /* Successful bind */
603 lcp->user = !user ? NULL : string_copy(user);
604 lcp->password = !password ? NULL : string_copy(password);
606 ldap_msgfree(result);
610 /* If we are just checking credentials, return OK. */
612 if (search_type == SEARCH_LDAP_AUTH)
614 DEBUG(D_lookup) debug_printf("Bind succeeded: ldapauth returns OK\n");
618 /* Before doing the search, set the time and size limits (if given). Here again
619 the different implementations of LDAP have chosen to do things differently. */
621 #if defined(LDAP_OPT_SIZELIMIT)
622 ldap_set_option(lcp->ld, LDAP_OPT_SIZELIMIT, (void *)&sizelimit);
623 ldap_set_option(lcp->ld, LDAP_OPT_TIMELIMIT, (void *)&timelimit);
625 lcp->ld->ld_sizelimit = sizelimit;
626 lcp->ld->ld_timelimit = timelimit;
629 /* Similarly for dereferencing aliases. Don't know if this is possible on
630 an LDAP library without LDAP_OPT_DEREF. */
632 #if defined(LDAP_OPT_DEREF)
633 ldap_set_option(lcp->ld, LDAP_OPT_DEREF, (void *)&dereference);
636 /* Similarly for the referral setting; should the library follow referrals that
637 the LDAP server returns? The conditional is just in case someone uses a library
640 #if defined(LDAP_OPT_REFERRALS)
641 ldap_set_option(lcp->ld, LDAP_OPT_REFERRALS, referrals);
644 /* Start the search on the server. */
646 DEBUG(D_lookup) debug_printf("Start search\n");
648 msgid = ldap_search(lcp->ld, ludp->lud_dn, ludp->lud_scope, ludp->lud_filter,
653 #if defined LDAP_LIB_SOLARIS || defined LDAP_LIB_OPENLDAP2
655 ldap_get_option(lcp->ld, LDAP_OPT_ERROR_NUMBER, &err);
656 *errmsg = string_sprintf("ldap_search failed: %d, %s", err,
657 ldap_err2string(err));
659 *errmsg = string_sprintf("ldap_search failed");
665 /* Loop to pick up results as they come in, setting a timeout if one was
668 while ((rc = ldap_result(lcp->ld, msgid, 0, timeoutptr, &result)) ==
669 LDAP_RES_SEARCH_ENTRY)
672 int valuecount; /* We can see an attr spread across several
673 entries. If B is derived from A and we request
674 A and the directory contains both, A and B,
675 then we get two entries, one for A and one for B.
676 Here we just count the values per entry */
678 DEBUG(D_lookup) debug_printf("LDAP result loop\n");
680 for(e = ldap_first_entry(lcp->ld, result), valuecount = 0;
682 e = ldap_next_entry(lcp->ld, e))
685 BOOL insert_space = FALSE;
687 DEBUG(D_lookup) debug_printf("LDAP entry loop\n");
689 rescount++; /* Count results */
691 /* Results for multiple entries values are separated by newlines. */
693 if (data) data = string_catn(data, US"\n", 1);
695 /* Get the DN from the last result. */
697 if ((new_dn = US ldap_get_dn(lcp->ld, e)))
701 #if defined LDAP_LIB_NETSCAPE || defined LDAP_LIB_OPENLDAP2
703 #else /* OPENLDAP 1, UMich, Solaris */
711 /* If the data we want is actually the DN rather than any attribute values,
712 (an "ldapdn" search) add it to the data string. If there are multiple
713 entries, the DNs will be concatenated, but we test for this case below, as
714 for SEARCH_LDAP_SINGLE, and give an error. */
716 if (search_type == SEARCH_LDAP_DN) /* Do not amalgamate these into one */
717 { /* condition, because of the else */
718 if (new_dn) /* below, that's for the first only */
720 data = string_cat(data, new_dn);
721 (void) string_from_gstring(data);
722 attribute_found = TRUE;
726 /* Otherwise, loop through the entry, grabbing attribute values. If there's
727 only one attribute being retrieved, no attribute name is given, and the
728 result is not quoted. Multiple values are separated by (comma).
729 If more than one attribute is being retrieved, the data is given as a
730 sequence of name=value pairs, separated by (space), with the value always in quotes.
731 If there are multiple values, they are given within the quotes, comma separated. */
733 else for (attr = US ldap_first_attribute(lcp->ld, e, &ber);
734 attr; attr = US ldap_next_attribute(lcp->ld, e, ber))
736 DEBUG(D_lookup) debug_printf("LDAP attr loop\n");
738 /* In case of attrs_requested == 1 we just count the values, in all other cases
739 (0, >1) we count the values per attribute */
740 if (attrs_requested != 1) valuecount = 0;
744 /* Get array of values for this attribute. */
746 if ((firstval = values = USS ldap_get_values(lcp->ld, e, CS attr)))
748 if (attrs_requested != 1)
751 data = string_catn(data, US" ", 1);
754 data = string_cat(data, attr);
755 data = string_catn(data, US"=\"", 2);
760 uschar *value = *values;
761 int len = Ustrlen(value);
764 DEBUG(D_lookup) debug_printf("LDAP value loop %s:%s\n", attr, value);
766 /* In case we requested one attribute only but got several times
767 into that attr loop, we need to append the additional values.
768 (This may happen if you derive attributeTypes B and C from A and
769 then query for A.) In all other cases we detect the different
770 attribute and append only every non first value. */
772 if (data && valuecount > 1)
773 data = string_catn(data, US",", 1);
775 /* For multiple attributes, the data is in quotes. We must escape
776 internal quotes, backslashes, newlines, and must double commas. */
778 if (attrs_requested != 1)
781 for (j = 0; j < len; j++)
783 if (value[j] == '\n')
784 data = string_catn(data, US"\\n", 2);
785 else if (value[j] == ',')
786 data = string_catn(data, US",,", 2);
789 if (value[j] == '\"' || value[j] == '\\')
790 data = string_catn(data, US"\\", 1);
791 data = string_catn(data, value+j, 1);
796 /* For single attributes, just double commas */
801 for (j = 0; j < len; j++)
803 data = string_catn(data, US",,", 2);
805 data = string_catn(data, value+j, 1);
809 /* Move on to the next value */
812 attribute_found = TRUE;
815 /* Closing quote at the end of the data for a named attribute. */
817 if (attrs_requested != 1)
818 data = string_catn(data, US"\"", 1);
820 /* Free the values */
822 ldap_value_free(CSS firstval);
826 #if defined LDAP_LIB_NETSCAPE || defined LDAP_LIB_OPENLDAP2
828 /* Netscape and OpenLDAP2 LDAP's attrs are dynamically allocated and need
829 to be freed. UMich LDAP stores them in static storage and does not require
834 } /* End "for" loop for extracting attributes from an entry */
835 } /* End "for" loop for extracting entries from a result */
837 /* Free the result */
839 ldap_msgfree(result);
841 } /* End "while" loop for multiple results */
843 /* Terminate the dynamic string that we have built and reclaim unused store */
847 (void) string_from_gstring(data);
848 gstring_reset_unused(data);
851 /* Copy the last dn into eldap_dn */
855 eldap_dn = string_copy(dn);
856 #if defined LDAP_LIB_NETSCAPE || defined LDAP_LIB_OPENLDAP2
858 #else /* OPENLDAP 1, UMich, Solaris */
863 DEBUG(D_lookup) debug_printf("search ended by ldap_result yielding %d\n",rc);
867 *errmsg = US"ldap_result timed out";
871 /* A return code of -1 seems to mean "ldap_result failed internally or couldn't
872 provide you with a message". Other error states seem to exist where
873 ldap_result() didn't give us any message from the server at all, leaving result
874 set to NULL. Apparently, "the error parameters of the LDAP session handle will
875 be set accordingly". That's the best we can do to retrieve an error status; we
876 can't use functions like ldap_result2error because they parse a message from
877 the server, which we didn't get.
879 Annoyingly, the different implementations of LDAP have gone for different
880 methods of handling error codes and generating error messages. */
882 if (rc == -1 || !result)
885 DEBUG(D_lookup) debug_printf("ldap_result failed\n");
887 #if defined LDAP_LIB_SOLARIS || defined LDAP_LIB_OPENLDAP2
888 ldap_get_option(lcp->ld, LDAP_OPT_ERROR_NUMBER, &err);
889 *errmsg = string_sprintf("ldap_result failed: %d, %s",
890 err, ldap_err2string(err));
892 #elif defined LDAP_LIB_NETSCAPE
893 /* Dubious (surely 'matched' is spurious here?) */
894 (void)ldap_get_lderrno(lcp->ld, &matched, &error1);
895 *errmsg = string_sprintf("ldap_result failed: %s (%s)", error1, matched);
897 #else /* UMich LDAP aka OpenLDAP 1.x */
898 *errmsg = string_sprintf("ldap_result failed: %d, %s",
899 lcp->ld->ld_errno, ldap_err2string(lcp->ld->ld_errno));
905 /* A return code that isn't -1 doesn't necessarily mean there were no problems
906 with the search. The message must be an LDAP_RES_SEARCH_RESULT or
907 LDAP_RES_SEARCH_REFERENCE or else it's something we can't handle. Some versions
908 of LDAP do not define LDAP_RES_SEARCH_REFERENCE (LDAP v1 is one, it seems). So
909 we don't provide that functionality when we can't. :-) */
911 if (rc != LDAP_RES_SEARCH_RESULT
912 #ifdef LDAP_RES_SEARCH_REFERENCE
913 && rc != LDAP_RES_SEARCH_REFERENCE
917 *errmsg = string_sprintf("ldap_result returned unexpected code %d", rc);
921 /* We have a result message from the server. This doesn't yet mean all is well.
922 We need to parse the message to find out exactly what's happened. */
924 #if defined LDAP_LIB_SOLARIS || defined LDAP_LIB_OPENLDAP2
926 ldap_parse_rc = ldap_parse_result(lcp->ld, result, &rc, CSS &matched,
927 CSS &error2, NULL, NULL, 0);
928 DEBUG(D_lookup) debug_printf("ldap_parse_result: %d\n", ldap_parse_rc);
929 if (ldap_parse_rc < 0 &&
930 (ldap_parse_rc != LDAP_NO_RESULTS_RETURNED
931 #ifdef LDAP_RES_SEARCH_REFERENCE
932 || ldap_rc != LDAP_RES_SEARCH_REFERENCE
936 *errmsg = string_sprintf("ldap_parse_result failed %d", ldap_parse_rc);
939 error1 = US ldap_err2string(rc);
941 #elif defined LDAP_LIB_NETSCAPE
942 /* Dubious (it doesn't reference 'result' at all!) */
943 rc = ldap_get_lderrno(lcp->ld, &matched, &error1);
945 #else /* UMich LDAP aka OpenLDAP 1.x */
946 rc = ldap_result2error(lcp->ld, result, 0);
947 error1 = ldap_err2string(rc);
948 error2 = lcp->ld->ld_error;
949 matched = lcp->ld->ld_matched;
952 /* Process the status as follows:
954 (1) If we get LDAP_SIZELIMIT_EXCEEDED, just carry on, to return the
955 truncated result list.
957 (2) If we get LDAP_RES_SEARCH_REFERENCE, also just carry on. This was a
958 submitted patch that is reported to "do the right thing" with Solaris
959 LDAP libraries. (The problem it addresses apparently does not occur with
962 (3) The range of errors defined by LDAP_NAME_ERROR generally mean "that
963 object does not, or cannot, exist in the database". For those cases we
966 (4) All other non-successes here are treated as some kind of problem with
967 the lookup, so return DEFER (which is the default in error_yield).
970 DEBUG(D_lookup) debug_printf("ldap_parse_result yielded %d: %s\n",
971 rc, ldap_err2string(rc));
973 if (rc != LDAP_SUCCESS && rc != LDAP_SIZELIMIT_EXCEEDED
974 #ifdef LDAP_RES_SEARCH_REFERENCE
975 && rc != LDAP_RES_SEARCH_REFERENCE
979 *errmsg = string_sprintf("LDAP search failed - error %d: %s%s%s%s%s",
981 error1 ? error1 : US"",
982 error2 && error2[0] ? US"/" : US"",
983 error2 ? error2 : US"",
984 matched && matched[0] ? US"/" : US"",
985 matched ? matched : US"");
987 #if defined LDAP_NAME_ERROR
988 if (LDAP_NAME_ERROR(rc))
989 #elif defined NAME_ERROR /* OPENLDAP1 calls it this */
992 if (rc == LDAP_NO_SUCH_OBJECT)
996 DEBUG(D_lookup) debug_printf("lookup failure forced\n");
1002 /* The search succeeded. Check if we have too many results */
1004 if (search_type != SEARCH_LDAP_MULTIPLE && rescount > 1)
1006 *errmsg = string_sprintf("LDAP search: more than one entry (%d) was returned "
1007 "(filter not specific enough?)", rescount);
1008 goto RETURN_ERROR_BREAK;
1011 /* Check if we have too few (zero) entries */
1015 *errmsg = string_sprintf("LDAP search: no results");
1017 goto RETURN_ERROR_BREAK;
1020 /* If an entry was found, but it had no attributes, we behave as if no entries
1021 were found, that is, the lookup failed. */
1023 if (!attribute_found)
1025 *errmsg = US"LDAP search: found no attributes";
1030 /* Otherwise, it's all worked */
1032 DEBUG(D_lookup) debug_printf("LDAP search: returning: %s\n", data->s);
1036 if (result) ldap_msgfree(result);
1037 ldap_free_urldesc(ludp);
1043 *defer_break = TRUE;
1046 DEBUG(D_lookup) debug_printf("%s\n", *errmsg);
1049 if (result) ldap_msgfree(result);
1050 if (ludp) ldap_free_urldesc(ludp);
1052 #if defined LDAP_LIB_OPENLDAP2
1053 if (error2) ldap_memfree(error2);
1054 if (matched) ldap_memfree(matched);
1062 /*************************************************
1063 * Internal search control function *
1064 *************************************************/
1066 /* This function is called from eldap_find(), eldapauth_find(), eldapdn_find(),
1067 and eldapm_find() with a difference in the "search_type" argument. It controls
1068 calls to perform_ldap_search() which actually does the work. We call that
1069 repeatedly for certain types of defer in the case when the URL contains no host
1070 name and eldap_default_servers is set to a list of servers to try. This gives
1071 more control than just passing over a list of hosts to ldap_open() because it
1072 handles other kinds of defer as well as just a failure to open. Note that the
1073 URL is defined to contain either zero or one "hostport" only.
1075 Parameter data in addition to the URL can be passed as preceding text in the
1076 string, as items of the form XXX=yyy. The URL itself can be detected because it
1077 must begin "ldapx://", where x is empty, s, or i.
1080 ldap_url the URL to be looked up, optionally preceded by other parameter
1082 search_type SEARCH_LDAP_MULTIPLE allows values from multiple entries
1083 SEARCH_LDAP_SINGLE allows values from one entry only
1084 SEARCH_LDAP_DN gets the DN from one entry
1085 res set to point at the result
1086 errmsg set to point a message if result is not OK
1088 Returns: OK or FAIL or DEFER
1092 control_ldap_search(const uschar *ldap_url, int search_type, uschar **res,
1095 BOOL defer_break = FALSE;
1096 int timelimit = LDAP_NO_LIMIT;
1097 int sizelimit = LDAP_NO_LIMIT;
1100 int dereference = LDAP_DEREF_NEVER;
1101 void* referrals = LDAP_OPT_ON;
1102 const uschar *url = ldap_url;
1104 uschar *user = NULL;
1105 uschar *password = NULL;
1106 uschar *local_servers = NULL;
1111 while (isspace(*url)) url++;
1113 /* Until the string begins "ldap", search for the other parameter settings that
1114 are recognized. They are of the form NAME=VALUE, with the value being
1115 optionally double-quoted. There must still be a space after it, however. No
1116 NAME has the value "ldap". */
1118 while (strncmpic(url, US"ldap", 4) != 0)
1120 const uschar *name = url;
1121 while (*url != 0 && *url != '=') url++;
1126 namelen = ++url - name;
1127 value = string_dequote(&url);
1130 if (strncmpic(name, US"USER=", namelen) == 0) user = value;
1131 else if (strncmpic(name, US"PASS=", namelen) == 0) password = value;
1132 else if (strncmpic(name, US"SIZE=", namelen) == 0) sizelimit = Uatoi(value);
1133 else if (strncmpic(name, US"TIME=", namelen) == 0) timelimit = Uatoi(value);
1134 else if (strncmpic(name, US"CONNECT=", namelen) == 0) tcplimit = Uatoi(value);
1135 else if (strncmpic(name, US"NETTIME=", namelen) == 0) tcplimit = Uatoi(value);
1136 else if (strncmpic(name, US"SERVERS=", namelen) == 0) local_servers = value;
1138 /* Don't know if all LDAP libraries have LDAP_OPT_DEREF */
1140 #ifdef LDAP_OPT_DEREF
1141 else if (strncmpic(name, US"DEREFERENCE=", namelen) == 0)
1143 if (strcmpic(value, US"never") == 0) dereference = LDAP_DEREF_NEVER;
1144 else if (strcmpic(value, US"searching") == 0)
1145 dereference = LDAP_DEREF_SEARCHING;
1146 else if (strcmpic(value, US"finding") == 0)
1147 dereference = LDAP_DEREF_FINDING;
1148 if (strcmpic(value, US"always") == 0) dereference = LDAP_DEREF_ALWAYS;
1151 else if (strncmpic(name, US"DEREFERENCE=", namelen) == 0)
1153 *errmsg = string_sprintf("LDAP_OP_DEREF not defined in this LDAP "
1154 "library - cannot use \"dereference\"");
1155 DEBUG(D_lookup) debug_printf("%s\n", *errmsg);
1160 #ifdef LDAP_OPT_REFERRALS
1161 else if (strncmpic(name, US"REFERRALS=", namelen) == 0)
1163 if (strcmpic(value, US"follow") == 0) referrals = LDAP_OPT_ON;
1164 else if (strcmpic(value, US"nofollow") == 0) referrals = LDAP_OPT_OFF;
1167 *errmsg = string_sprintf("LDAP option REFERRALS is not \"follow\" "
1169 DEBUG(D_lookup) debug_printf("%s\n", *errmsg);
1174 else if (strncmpic(name, US"REFERRALS=", namelen) == 0)
1176 *errmsg = string_sprintf("LDAP_OP_REFERRALS not defined in this LDAP "
1177 "library - cannot use \"referrals\"");
1178 DEBUG(D_lookup) debug_printf("%s\n", *errmsg);
1186 string_sprintf("unknown parameter \"%.*s\" precedes LDAP URL",
1188 DEBUG(D_lookup) debug_printf("LDAP query error: %s\n", *errmsg);
1191 while (isspace(*url)) url++;
1195 *errmsg = US"malformed parameter setting precedes LDAP URL";
1196 DEBUG(D_lookup) debug_printf("LDAP query error: %s\n", *errmsg);
1200 /* If user is set, de-URL-quote it. Some LDAP libraries do this for themselves,
1201 but it seems that not all behave like this. The DN for the user is often the
1202 result of ${quote_ldap_dn:...} quoting, which does apply URL quoting, because
1203 that is needed when the DN is used as a base DN in a query. Sigh. This is all
1204 far too complicated. */
1210 for (s = user; *s != 0; s++)
1213 if (*s == '%' && isxdigit(c=s[1]) && isxdigit(d=s[2]))
1218 (((c >= 'a')? (10 + c - 'a') : c - '0') << 4) |
1219 ((d >= 'a')? (10 + d - 'a') : d - '0');
1228 debug_printf("LDAP parameters: user=%s pass=%s size=%d time=%d connect=%d "
1229 "dereference=%d referrals=%s\n", user, password, sizelimit, timelimit,
1230 tcplimit, dereference, (referrals == LDAP_OPT_ON)? "on" : "off");
1232 /* If the request is just to check authentication, some credentials must
1233 be given. The password must not be empty because LDAP binds with an empty
1234 password are considered anonymous, and will succeed on most installations. */
1236 if (search_type == SEARCH_LDAP_AUTH)
1238 if (user == NULL || password == NULL)
1240 *errmsg = US"ldapauth lookups must specify the username and password";
1243 if (password[0] == 0)
1245 DEBUG(D_lookup) debug_printf("Empty password: ldapauth returns FAIL\n");
1250 /* Check for valid ldap url starters */
1253 if (tolower(*p) == 's' || tolower(*p) == 'i') p++;
1254 if (Ustrncmp(p, "://", 3) != 0)
1256 *errmsg = string_sprintf("LDAP URL does not start with \"ldap://\", "
1257 "\"ldaps://\", or \"ldapi://\" (it starts with \"%.16s...\")", url);
1258 DEBUG(D_lookup) debug_printf("LDAP query error: %s\n", *errmsg);
1262 /* No default servers, or URL contains a server name: just one attempt */
1264 if ((eldap_default_servers == NULL && local_servers == NULL) || p[3] != '/')
1266 return perform_ldap_search(url, NULL, 0, search_type, res, errmsg,
1267 &defer_break, user, password, sizelimit, timelimit, tcplimit, dereference,
1271 /* Loop through the default servers until OK or FAIL. Use local_servers list
1272 * if defined in the lookup, otherwise use the global default list */
1273 list = (local_servers == NULL) ? eldap_default_servers : local_servers;
1274 while ((server = string_nextinlist(&list, &sep, buffer, sizeof(buffer))) != NULL)
1278 uschar *colon = Ustrchr(server, ':');
1282 port = Uatoi(colon+1);
1284 rc = perform_ldap_search(url, server, port, search_type, res, errmsg,
1285 &defer_break, user, password, sizelimit, timelimit, tcplimit, dereference,
1287 if (rc != DEFER || defer_break) return rc;
1295 /*************************************************
1296 * Find entry point *
1297 *************************************************/
1299 /* See local README for interface description. The different kinds of search
1300 are handled by a common function, with a flag to differentiate between them.
1301 The handle and filename arguments are not used. */
1304 eldap_find(void *handle, uschar *filename, const uschar *ldap_url, int length,
1305 uschar **result, uschar **errmsg, uint *do_cache)
1307 /* Keep picky compilers happy */
1308 do_cache = do_cache;
1309 return(control_ldap_search(ldap_url, SEARCH_LDAP_SINGLE, result, errmsg));
1313 eldapm_find(void *handle, uschar *filename, const uschar *ldap_url, int length,
1314 uschar **result, uschar **errmsg, uint *do_cache)
1316 /* Keep picky compilers happy */
1317 do_cache = do_cache;
1318 return(control_ldap_search(ldap_url, SEARCH_LDAP_MULTIPLE, result, errmsg));
1322 eldapdn_find(void *handle, uschar *filename, const uschar *ldap_url, int length,
1323 uschar **result, uschar **errmsg, uint *do_cache)
1325 /* Keep picky compilers happy */
1326 do_cache = do_cache;
1327 return(control_ldap_search(ldap_url, SEARCH_LDAP_DN, result, errmsg));
1331 eldapauth_find(void *handle, uschar *filename, const uschar *ldap_url, int length,
1332 uschar **result, uschar **errmsg, uint *do_cache)
1334 /* Keep picky compilers happy */
1335 do_cache = do_cache;
1336 return(control_ldap_search(ldap_url, SEARCH_LDAP_AUTH, result, errmsg));
1341 /*************************************************
1342 * Open entry point *
1343 *************************************************/
1345 /* See local README for interface description. */
1348 eldap_open(uschar *filename, uschar **errmsg)
1350 return (void *)(1); /* Just return something non-null */
1355 /*************************************************
1356 * Tidy entry point *
1357 *************************************************/
1359 /* See local README for interface description.
1360 Make sure that eldap_dn does not refer to reclaimed or worse, freed store */
1365 LDAP_CONNECTION *lcp = NULL;
1368 while ((lcp = ldap_connections) != NULL)
1370 DEBUG(D_lookup) debug_printf("unbind LDAP connection to %s:%d\n", lcp->host,
1372 if(lcp->bound == TRUE)
1373 ldap_unbind(lcp->ld);
1374 ldap_connections = lcp->next;
1380 /*************************************************
1381 * Quote entry point *
1382 *************************************************/
1384 /* LDAP quoting is unbelievably messy. For a start, two different levels of
1385 quoting have to be done: LDAP quoting, and URL quoting. The current
1386 specification is the result of a suggestion by Brian Candler. It recognizes
1389 (1) For text that appears in a search filter, the following escapes are
1390 required (see RFC 2254):
1398 Then the entire filter text must be URL-escaped. This kind of quoting is
1399 implemented by ${quote_ldap:....}. Note that we can never have a NULL
1400 in the input string, because that's a terminator.
1402 (2) For a DN that is part of a URL (i.e. the base DN), the characters
1406 must be quoted by backslashing. See RFC 2253. Leading and trailing spaces
1407 must be escaped, as must a leading #. Then the string must be URL-quoted.
1408 This type of quoting is implemented by ${quote_ldap_dn:....}.
1410 For URL quoting, the only characters that need not be quoted are the
1415 All the others must be hexified and preceded by %. This includes the
1416 backslashes used for LDAP quoting.
1418 For a DN that is given in the USER parameter for authentication, we need the
1419 same initial quoting as (2) but in this case, the result must NOT be
1420 URL-escaped, because it isn't a URL. The way this is handled is by
1421 de-URL-quoting the text when processing the USER parameter in
1422 control_ldap_search() above. That means that the same quote operator can be
1423 used. This has the additional advantage that spaces in the DN won't cause
1424 parsing problems. For example:
1426 USER=cn=${quote_ldap_dn:$1},%20dc=example,%20dc=com
1428 should be safe if there are spaces in $1.
1432 s the string to be quoted
1433 opt additional option text or NULL if none
1434 only "dn" is recognized
1436 Returns: the processed string or NULL for a bad option
1441 /* The characters in this string, together with alphanumerics, never need
1442 quoting in any way. */
1444 #define ALWAYS_LITERAL "!$'-._"
1446 /* The special characters in this string do not need to be URL-quoted. The set
1447 is a bit larger than the general literals. */
1449 #define URL_NONQUOTE ALWAYS_LITERAL "()*+"
1451 /* The following macros define the characters that are quoted by quote_ldap and
1452 quote_ldap_dn, respectively. */
1454 #define LDAP_QUOTE "*()\\"
1455 #define LDAP_DN_QUOTE ",+\"\\<>;"
1460 eldap_quote(uschar *s, uschar *opt)
1469 /* Test for a DN quotation. */
1473 if (Ustrcmp(opt, "dn") != 0) return NULL; /* No others recognized */
1477 /* Compute how much extra store we need for the string. This doesn't have to be
1478 exact as long as it isn't an underestimate. The worst case is the addition of 5
1479 extra bytes for a single character. This occurs for certain characters in DNs,
1480 where, for example, < turns into %5C%3C. For simplicity, we just add 5 for each
1481 possibly escaped character. The really fast way would be just to test for
1482 non-alphanumerics, but it is probably better to spot a few others that are
1483 never escaped, because if there are no specials at all, we can avoid copying
1486 while ((c = *t++) != 0)
1489 if (!isalnum(c) && Ustrchr(ALWAYS_LITERAL, c) == NULL) count += 5;
1491 if (count == 0) return s;
1493 /* Get sufficient store to hold the quoted string */
1495 t = quoted = store_get(len + count + 1);
1497 /* Handle plain quote_ldap */
1501 while ((c = *s++) != 0)
1505 if (Ustrchr(LDAP_QUOTE, c) != NULL)
1507 sprintf(CS t, "%%5C%02X", c); /* e.g. * => %5C2A */
1511 if (Ustrchr(URL_NONQUOTE, c) == NULL) /* e.g. ] => %5D */
1513 sprintf(CS t, "%%%02X", c);
1518 *t++ = c; /* unquoted character */
1522 /* Handle quote_ldap_dn */
1526 uschar *ss = s + len;
1528 /* Find the last char before any trailing spaces */
1530 while (ss > s && ss[-1] == ' ') ss--;
1532 /* Quote leading spaces and sharps */
1536 if (*s != ' ' && *s != '#') break;
1537 sprintf(CS t, "%%5C%%%02X", *s);
1541 /* Handle the rest of the string, up to the trailing spaces */
1548 if (Ustrchr(LDAP_DN_QUOTE, c) != NULL)
1550 Ustrncpy(t, "%5C", 3); /* insert \ where needed */
1551 t += 3; /* fall through to check URL */
1553 if (Ustrchr(URL_NONQUOTE, c) == NULL) /* e.g. ] => %5D */
1555 sprintf(CS t, "%%%02X", c);
1560 *t++ = c; /* unquoted character, or non-URL quoted after %5C */
1563 /* Handle the trailing spaces */
1567 Ustrncpy(t, "%5C%20", 6);
1572 /* Terminate the new string and return */
1580 /*************************************************
1581 * Version reporting entry point *
1582 *************************************************/
1584 /* See local README for interface description. */
1586 #include "../version.h"
1589 ldap_version_report(FILE *f)
1592 fprintf(f, "Library version: LDAP: Exim version %s\n", EXIM_VERSION_STR);
1597 static lookup_info ldap_lookup_info = {
1598 US"ldap", /* lookup name */
1599 lookup_querystyle, /* query-style lookup */
1600 eldap_open, /* open function */
1601 NULL, /* check function */
1602 eldap_find, /* find function */
1603 NULL, /* no close function */
1604 eldap_tidy, /* tidy function */
1605 eldap_quote, /* quoting function */
1606 ldap_version_report /* version reporting */
1609 static lookup_info ldapdn_lookup_info = {
1610 US"ldapdn", /* lookup name */
1611 lookup_querystyle, /* query-style lookup */
1612 eldap_open, /* sic */ /* open function */
1613 NULL, /* check function */
1614 eldapdn_find, /* find function */
1615 NULL, /* no close function */
1616 eldap_tidy, /* sic */ /* tidy function */
1617 eldap_quote, /* sic */ /* quoting function */
1618 NULL /* no version reporting (redundant) */
1621 static lookup_info ldapm_lookup_info = {
1622 US"ldapm", /* lookup name */
1623 lookup_querystyle, /* query-style lookup */
1624 eldap_open, /* sic */ /* open function */
1625 NULL, /* check function */
1626 eldapm_find, /* find function */
1627 NULL, /* no close function */
1628 eldap_tidy, /* sic */ /* tidy function */
1629 eldap_quote, /* sic */ /* quoting function */
1630 NULL /* no version reporting (redundant) */
1634 #define ldap_lookup_module_info _lookup_module_info
1637 static lookup_info *_lookup_list[] = { &ldap_lookup_info, &ldapdn_lookup_info, &ldapm_lookup_info };
1638 lookup_module_info ldap_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 3 };
1640 /* End of lookups/ldap.c */