2 $Id: ldap.c,v 1.4 2009-11-28 10:13:04 franklahm Exp $
3 Copyright (c) 2008,2009 Frank Lahm <franklahm@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
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.
18 #endif /* HAVE_CONFIG_H */
27 #include <atalk/logger.h>
28 #include <atalk/afp.h>
29 #include <atalk/uuid.h>
30 #include <atalk/ldapconfig.h> /* For struct ldap_pref */
36 /********************************************************
37 * LDAP config stuff. Filled by etc/afpd/acl_config.c
38 ********************************************************/
39 int ldap_config_valid;
51 char *ldap_group_attr;
54 struct ldap_pref ldap_prefs[] = {
55 {&ldap_server, "ldap_server", 0, 0, -1},
56 {&ldap_auth_method,"ldap_auth_method", 1, 1, -1},
57 {&ldap_auth_dn, "ldap_auth_dn", 0, 0, 0},
58 {&ldap_auth_pw, "ldap_auth_pw", 0, 0, 0},
59 {&ldap_userbase, "ldap_userbase", 0, 0, -1},
60 {&ldap_userscope, "ldap_userscope", 1 ,1, -1},
61 {&ldap_groupbase, "ldap_groupbase", 0, 0, -1},
62 {&ldap_groupscope, "ldap_groupscope", 1 ,1, -1},
63 {&ldap_uuid_attr, "ldap_uuid_attr", 0, 0, -1},
64 {&ldap_name_attr, "ldap_name_attr", 0, 0, -1},
65 {&ldap_group_attr, "ldap_group_attr", 0, 0, -1},
66 {&ldap_uid_attr, "ldap_uid_attr", 0, 0, 0},
67 {NULL, NULL, 0, 0, -1}
70 struct pref_array prefs_array[] = {
71 {"ldap_auth_method", "none", LDAP_AUTH_NONE},
72 {"ldap_auth_method", "simple", LDAP_AUTH_SIMPLE},
73 {"ldap_auth_method", "sasl", LDAP_AUTH_SASL},
74 {"ldap_userscope", "base", LDAP_SCOPE_BASE},
75 {"ldap_userscope", "one", LDAP_SCOPE_ONELEVEL},
76 {"ldap_userscope", "sub", LDAP_SCOPE_SUBTREE},
77 {"ldap_groupscope", "base", LDAP_SCOPE_BASE},
78 {"ldap_groupscope", "one", LDAP_SCOPE_ONELEVEL},
79 {"ldap_groupscope", "sub", LDAP_SCOPE_SUBTREE},
83 /********************************************************
84 * Static helper function
85 ********************************************************/
88 * ldap_getattr_fromfilter_withbase_scope():
90 * scope: LDAP_SCOPE_BASE, LDAP_SCOPE_ONELEVEL, LDAP_SCOPE_SUBTREE
91 * result: return unique search result here, allocated here, caller must free
93 * All connection managment to the LDAP server is done here. Just set KEEPALIVE if you know
94 * you will be dispatching more than one search in a row, then don't set it with the last search.
95 * You MUST dispatch the queries timely, otherwise the LDAP handle might timeout.
97 static int ldap_getattr_fromfilter_withbase_scope( const char *searchbase,
105 int desired_version = LDAP_VERSION3;
106 static int ldapconnected = 0;
107 static LDAP *ld = NULL;
108 LDAPMessage* msg = NULL;
109 LDAPMessage* entry = NULL;
111 char **attribute_values;
112 struct timeval timeout;
114 // LOG(log_debug, logtype_afpd,"ldap_getattr_fromfilter_withbase_scope: BEGIN");
119 /* init LDAP if necessary */
120 if (!ldapconnected) {
121 // LOG(log_debug, logtype_default, "ldap_getattr_fromfilter_withbase_scope: LDAP server: \'%s\'", ldap_server);
122 if ((ld = ldap_init(ldap_server, LDAP_PORT)) == NULL ) {
123 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: ldap_init error");
126 if (ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &desired_version) != 0) {
127 /* LDAP_OPT_SUCCESS is not in the proposed standard, so we check for 0
128 http://tools.ietf.org/id/draft-ietf-ldapext-ldap-c-api-05.txt */
129 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: ldap_set_option failed!");
136 if (!ldapconnected) {
137 if (LDAP_AUTH_NONE == ldap_auth_method) {
138 if (ldap_bind_s(ld, "", "", LDAP_AUTH_SIMPLE) != LDAP_SUCCESS ) {
139 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: ldap_bind failed!");
140 LOG(log_error, logtype_default, "ldap_auth_method: \'%d\'", ldap_auth_method);
145 } else if (LDAP_AUTH_SIMPLE == ldap_auth_method) {
146 if (ldap_bind_s(ld, ldap_auth_dn, ldap_auth_pw, ldap_auth_method) != LDAP_SUCCESS ) {
147 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: ldap_bind failed!");
148 LOG(log_error, logtype_default, "ldap_auth_dn: \'%s\', ldap_auth_pw: \'%s\', ldap_auth_method: \'%d\'",
149 ldap_auth_dn, ldap_auth_pw, ldap_auth_method);
156 // LOG(log_debug, logtype_afpd,"LDAP start search: base: %s, filter: %s, attr: %s", searchbase, filter, attributes[0]);
158 /* start LDAP search */
159 ldaperr = ldap_search_st(ld, searchbase, scope, filter, attributes, 0, &timeout, &msg);
160 if (ldaperr != LDAP_SUCCESS) {
161 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: ldap_search_st failed: %s", ldap_err2string(ldaperr));
166 /* parse search result */
167 // LOG(log_debug, logtype_default, "ldap_getuuidfromname: got %d entries from ldap search", ldap_count_entries(ld, msg));
168 if (ldap_count_entries(ld, msg) != 1) {
172 entry = ldap_first_entry(ld, msg);
174 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: error in ldap_first_entry");
178 attribute_values = ldap_get_values(ld, entry, attributes[0]);
179 if (attribute_values == NULL) {
180 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: error in ldap_get_values");
185 // LOG(log_debug, logtype_afpd,"LDAP Search result: %s: %s", attributes[0], attribute_values[0]);
187 /* allocate place for uuid as string */
188 *result = calloc( 1, strlen(attribute_values[0]) + 1);
189 if (*result == NULL) {
190 LOG(log_error, logtype_default, "ldap_getattr_fromfilter_withbase_scope: %s: error calloc'ing",strerror(errno));
195 strcpy( *result, attribute_values[0]);
196 ldap_value_free(attribute_values);
198 /* FIXME: is there another way to free entry ? */
199 while (entry != NULL)
200 entry = ldap_next_entry(ld, entry);
206 if ((ldapconnected && !(conflags & KEEPALIVE)) || (*result != NULL)) {
207 ldapconnected = 0; /* regardless of unbind errors */
208 // LOG(log_debug, logtype_default,"LDAP unbind!");
209 if (ldap_unbind_s(ld) != 0) {
210 LOG(log_error, logtype_default, "ldap_unbind_s: %s\n", ldap_err2string(ldaperr));
218 /********************************************************
220 ********************************************************/
222 int ldap_getuuidfromname( const char *name, uuidtype_t type, char **uuid_string) {
225 char filter[256]; /* this should really be enough. we dont want to malloc everything! */
226 char *attributes[] = { ldap_uuid_attr, NULL};
230 if (type == UUID_GROUP)
231 ldap_attr = ldap_group_attr;
232 else /* type hopefully == UUID_USER */
233 ldap_attr = ldap_name_attr;
234 len = snprintf( filter, 256, "%s=%s", ldap_attr, name);
235 if (len >= 256 || len == -1) {
236 LOG(log_error, logtype_default, "ldap_getnamefromuuid: filter error:%d, \"%s\"", len, filter);
240 if (type == UUID_GROUP) {
241 ret = ldap_getattr_fromfilter_withbase_scope( ldap_groupbase, filter, attributes, ldap_userscope, KEEPALIVE, uuid_string);
242 } else { /* type hopefully == UUID_USER */
243 ret = ldap_getattr_fromfilter_withbase_scope( ldap_userbase, filter, attributes, ldap_groupscope, 0, uuid_string);
248 int ldap_getnamefromuuid( char *uuidstr, char **name, uuidtype_t *type) {
251 char filter[256]; /* this should really be enough. we dont want to malloc everything! */
252 char *attributes[] = { NULL, NULL};
255 len = snprintf( filter, 256, "%s=%s", ldap_uuid_attr, uuidstr);
256 if (len >= 256 || len == -1) {
257 LOG(log_error, logtype_default, "ldap_getnamefromuuid: filter overflow:%d, \"%s\"", len, filter);
260 /* search groups first. group acls are probably used more often */
261 attributes[0] = ldap_group_attr;
262 ret = ldap_getattr_fromfilter_withbase_scope( ldap_groupbase, filter, attributes, ldap_groupscope, KEEPALIVE, name);
267 attributes[0] = ldap_name_attr;
268 ret = ldap_getattr_fromfilter_withbase_scope( ldap_userbase, filter, attributes, ldap_userscope, 0, name);