2 * These functions implement the portions of AUTHMODE_LDAP and AUTHMODE_LDAP_AD which
3 * actually speak to the LDAP server.
5 * Copyright (c) 2011 by Art Cancro and the citadel.org development team.
7 * This program is open source software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License, version 3.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 int ctdl_require_ldap_version = 3;
19 #include <libcitadel.h>
21 #include "citserver.h"
22 #include "citadel_ldap.h"
23 #include "ctdl_module.h"
28 #define LDAP_DEPRECATED 1 /* Suppress libldap's warning that we are using deprecated API calls */
31 int CtdlTryUserLDAP(char *username,
32 char *found_dn, int found_dn_size,
33 char *fullname, int fullname_size,
36 LDAP *ldserver = NULL;
38 LDAPMessage *search_result = NULL;
39 LDAPMessage *entry = NULL;
40 char searchstring[1024];
45 if (fullname) safestrncpy(fullname, username, fullname_size);
47 ldserver = ldap_init(config.c_ldap_host, config.c_ldap_port);
48 if (ldserver == NULL) {
49 syslog(LOG_ALERT, "LDAP: Could not connect to %s:%d : %s\n",
50 config.c_ldap_host, config.c_ldap_port,
56 ldap_set_option(ldserver, LDAP_OPT_PROTOCOL_VERSION, &ctdl_require_ldap_version);
57 ldap_set_option(ldserver, LDAP_OPT_REFERRALS, (void *)LDAP_OPT_OFF);
59 striplt(config.c_ldap_bind_dn);
60 striplt(config.c_ldap_bind_pw);
61 syslog(LOG_DEBUG, "LDAP bind DN: %s\n", config.c_ldap_bind_dn);
62 i = ldap_simple_bind_s(ldserver,
63 (!IsEmptyStr(config.c_ldap_bind_dn) ? config.c_ldap_bind_dn : NULL),
64 (!IsEmptyStr(config.c_ldap_bind_pw) ? config.c_ldap_bind_pw : NULL)
66 if (i != LDAP_SUCCESS) {
67 syslog(LOG_ALERT, "LDAP: Cannot bind: %s (%d)\n", ldap_err2string(i), i);
74 if (config.c_auth_mode == AUTHMODE_LDAP_AD) {
75 sprintf(searchstring, "(sAMAccountName=%s)", username);
78 sprintf(searchstring, "(&(objectclass=posixAccount)(uid=%s))", username);
81 syslog(LOG_DEBUG, "LDAP search: %s\n", searchstring);
82 (void) ldap_search_ext_s(
84 config.c_ldap_base_dn, /* base */
85 LDAP_SCOPE_SUBTREE, /* scope */
86 searchstring, /* filter */
87 NULL, /* attrs (all attributes) */
88 0, /* attrsonly (attrs + values) */
89 NULL, /* serverctrls (none) */
90 NULL, /* clientctrls (none) */
92 1, /* sizelimit (1 result max) */
93 &search_result /* res */
96 /* Ignore the return value of ldap_search_ext_s(). Sometimes it returns an error even when
97 * the search succeeds. Instead, we check to see whether search_result is still NULL.
99 if (search_result == NULL) {
100 syslog(LOG_DEBUG, "LDAP search: zero results were returned\n");
101 ldap_unbind(ldserver);
105 /* At this point we've got at least one result from our query. If there are multiple
106 * results, we still only look at the first one.
108 entry = ldap_first_entry(ldserver, search_result);
111 user_dn = ldap_get_dn(ldserver, entry);
113 syslog(LOG_DEBUG, "dn = %s\n", user_dn);
116 if (config.c_auth_mode == AUTHMODE_LDAP_AD) {
117 values = ldap_get_values(ldserver, search_result, "displayName");
120 if (fullname) safestrncpy(fullname, values[0], fullname_size);
121 syslog(LOG_DEBUG, "displayName = %s\n", values[0]);
123 ldap_value_free(values);
127 values = ldap_get_values(ldserver, search_result, "cn");
130 if (fullname) safestrncpy(fullname, values[0], fullname_size);
131 syslog(LOG_DEBUG, "cn = %s\n", values[0]);
133 ldap_value_free(values);
137 if (config.c_auth_mode == AUTHMODE_LDAP_AD) {
138 values = ldap_get_values(ldserver, search_result, "objectGUID");
142 *uid = abs(HashLittle(values[0], strlen(values[0])));
143 syslog(LOG_DEBUG, "uid hashed from objectGUID = %d\n", *uid);
146 ldap_value_free(values);
150 values = ldap_get_values(ldserver, search_result, "uidNumber");
153 syslog(LOG_DEBUG, "uidNumber = %s\n", values[0]);
155 *uid = atoi(values[0]);
158 ldap_value_free(values);
164 /* free the results */
165 ldap_msgfree(search_result);
167 /* unbind so we can go back in as the authenticating user */
168 ldap_unbind(ldserver);
171 syslog(LOG_DEBUG, "No such user was found.\n");
175 if (found_dn) safestrncpy(found_dn, user_dn, found_dn_size);
176 ldap_memfree(user_dn);
181 int CtdlTryPasswordLDAP(char *user_dn, const char *password)
183 LDAP *ldserver = NULL;
186 if (IsEmptyStr(password)) {
187 syslog(LOG_DEBUG, "LDAP: empty passwords are not permitted\n");
191 syslog(LOG_DEBUG, "LDAP: trying to bind as %s\n", user_dn);
192 ldserver = ldap_init(config.c_ldap_host, config.c_ldap_port);
194 ldap_set_option(ldserver, LDAP_OPT_PROTOCOL_VERSION, &ctdl_require_ldap_version);
195 i = ldap_simple_bind_s(ldserver, user_dn, password);
196 if (i == LDAP_SUCCESS) {
197 syslog(LOG_DEBUG, "LDAP: bind succeeded\n");
200 syslog(LOG_DEBUG, "LDAP: Cannot bind: %s (%d)\n", ldap_err2string(i), i);
202 ldap_set_option(ldserver, LDAP_OPT_REFERRALS, (void *)LDAP_OPT_OFF);
203 ldap_unbind(ldserver);
206 if (i == LDAP_SUCCESS) {
215 * Learn LDAP attributes and stuff them into the vCard.
216 * Returns nonzero if we changed anything.
218 int Ctdl_LDAP_to_vCard(char *ldap_dn, struct vCard *v)
220 int changed_something = 0;
222 if (!ldap_dn) return(0);
226 * FIXME this is a stub function
228 * ldap_dn will contain the DN of the user, and v will contain a pointer to
229 * the vCard that needs to be (re-)populated. Put the requisite LDAP code here.
231 vcard_set_prop(v, "email;internet", xxx, 0);
233 * return nonzero to tell the caller that we made changes that need to be saved
234 changed_something = 1;
238 return(changed_something); /* tell the caller whether we made any changes */
241 #endif /* HAVE_LDAP */