2 * idmap_ad: map between Active Directory and RFC 2307 or "Services for Unix" (SFU) Accounts
4 * Unix SMB/CIFS implementation.
6 * Winbind ADS backend functions
8 * Copyright (C) Andrew Tridgell 2001
9 * Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
10 * Copyright (C) Gerald (Jerry) Carter 2004
11 * Copyright (C) Luke Howard 2001-2004
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 #define DBGC_CLASS DBGC_IDMAP
33 #ifndef ATTR_UIDNUMBER
34 #define ATTR_UIDNUMBER ADS_ATTR_SFU_UIDNUMBER_OID
37 #ifndef ATTR_GIDNUMBER
38 #define ATTR_GIDNUMBER ADS_ATTR_SFU_GIDNUMBER_OID
41 #define WINBIND_CCACHE_NAME "MEMORY:winbind_ccache"
43 NTSTATUS init_module(void);
45 static ADS_STRUCT *ad_idmap_ads = NULL;
46 static char *ad_idmap_uri = NULL;
48 static char *attr_uidnumber = NULL;
49 static char *attr_gidnumber = NULL;
51 static BOOL ad_idmap_check_attr_mapping(ADS_STRUCT *ads)
53 if (attr_uidnumber != NULL && attr_gidnumber != NULL) {
57 if (use_nss_info("sfu")) {
59 if (!ads_check_sfu_mapping(ads)) {
60 DEBUG(0,("ad_idmap_check_attr_mapping: failed to check for SFU schema\n"));
64 attr_uidnumber = SMB_STRDUP(ads->schema.sfu_uidnumber_attr);
65 attr_gidnumber = SMB_STRDUP(ads->schema.sfu_gidnumber_attr);
68 attr_uidnumber = SMB_STRDUP("uidNumber");
69 attr_gidnumber = SMB_STRDUP("gidNumber");
75 static ADS_STRUCT *ad_idmap_cached_connection(void)
81 #ifdef ADS_AUTH_EXTERNAL_BIND
82 local = ((strncmp(ad_idmap_uri, "ldapi://", sizeof("ldapi://") - 1)) == 0);
83 #endif /* ADS_AUTH_EXTERNAL_BIND */
85 if (ad_idmap_ads != NULL) {
88 /* check for a valid structure */
90 DEBUG(7, ("Current tickets expire at %d, time is now %d\n",
91 (uint32) ads->auth.expire, (uint32) time(NULL)));
92 if ( ads->config.realm && (ads->auth.expire > time(NULL))) {
95 /* we own this ADS_STRUCT so make sure it goes away */
98 ads_kdestroy(WINBIND_CCACHE_NAME);
104 /* we don't want this to affect the users ccache */
105 setenv("KRB5CCNAME", WINBIND_CCACHE_NAME, 1);
108 ads = ads_init(NULL, NULL, NULL);
110 DEBUG(1,("ads_init failed\n"));
114 /* if ad_imap_uri is not empty we try to connect to
115 * the given URI in smb.conf. Else try to connect to
118 if (*ad_idmap_uri != '\0') {
119 ads->server.ldap_uri = SMB_STRDUP(ad_idmap_uri);
120 if (ads->server.ldap_uri == NULL) {
125 ads->server.ldap_uri = NULL;
126 ads->server.ldap_server = NULL;
129 #ifdef ADS_AUTH_EXTERNAL_BIND
131 ads->auth.flags |= ADS_AUTH_EXTERNAL_BIND;
135 /* the machine acct password might have change - fetch it every time */
136 SAFE_FREE(ads->auth.password);
137 ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
139 SAFE_FREE(ads->auth.realm);
140 ads->auth.realm = SMB_STRDUP(lp_realm());
143 status = ads_connect(ads);
144 if (!ADS_ERR_OK(status)) {
145 DEBUG(1, ("ad_idmap_init: failed to connect to AD\n"));
150 ads->is_mine = False;
152 if (!ad_idmap_check_attr_mapping(ads)) {
153 DEBUG(1, ("ad_idmap_init: failed to check attribute mapping\n"));
161 static NTSTATUS ad_idmap_init(char *uri)
163 ad_idmap_uri = SMB_STRDUP(uri);
164 if (ad_idmap_uri == NULL) {
165 return NT_STATUS_NO_MEMORY;
171 static NTSTATUS ad_idmap_get_sid_from_id(DOM_SID *sid, unid_t unid, int id_type)
174 NTSTATUS status = NT_STATUS_NONE_MAPPED;
175 const char *attrs[] = { "objectSid", NULL };
184 return NT_STATUS_INVALID_PARAMETER;
187 ads = ad_idmap_cached_connection();
189 DEBUG(1, ("ad_idmap_get_id_from_sid ADS uninitialized\n"));
190 return NT_STATUS_NOT_SUPPORTED;
193 switch (id_type & ID_TYPEMASK) {
195 if (asprintf(&expr, "(&(|(sAMAccountType=%d)(sAMAccountType=%d)(sAMAccountType=%d))(%s=%d))",
196 ATYPE_NORMAL_ACCOUNT, ATYPE_WORKSTATION_TRUST, ATYPE_INTERDOMAIN_TRUST,
197 ATTR_UIDNUMBER, (int)unid.uid) == -1) {
198 return NT_STATUS_NO_MEMORY;
202 if (asprintf(&expr, "(&(|(sAMAccountType=%d)(sAMAccountType=%d))(%s=%d))",
203 ATYPE_SECURITY_GLOBAL_GROUP, ATYPE_SECURITY_LOCAL_GROUP,
204 ATTR_GIDNUMBER, (int)unid.gid) == -1) {
205 return NT_STATUS_NO_MEMORY;
209 return NT_STATUS_INVALID_PARAMETER;
213 rc = ads_search_retry(ads, &res, expr, attrs);
215 if (!ADS_ERR_OK(rc)) {
216 DEBUG(1, ("ad_idmap_get_sid_from_id: ads_search: %s\n", ads_errstr(rc)));
220 count = ads_count_replies(ads, res);
222 DEBUG(1, ("ad_idmap_get_sid_from_id: ads_count_replies: no results\n"));
224 } else if (count != 1) {
225 DEBUG(1, ("ad_idmap_get_sid_from_id: ads_count_replies: incorrect cardinality\n"));
229 msg = ads_first_entry(ads, res);
231 DEBUG(1, ("ad_idmap_get_sid_from_id: ads_first_entry: could not retrieve search result\n"));
235 if (!ads_pull_sid(ads, msg, "objectSid", sid)) {
236 DEBUG(1, ("ad_idmap_get_sid_from_id: ads_pull_sid: could not retrieve SID from entry\n"));
240 status = NT_STATUS_OK;
241 DEBUG(1, ("ad_idmap_get_sid_from_id mapped POSIX %s %d to SID [%s]\n",
242 (id_type == ID_GROUPID) ? "GID" : "UID", (int)unid.uid,
243 sid_to_string(sid_string, sid)));
247 ads_msgfree(ads, res);
253 static NTSTATUS ad_idmap_get_id_from_sid(unid_t *unid, int *id_type, const DOM_SID *sid)
256 NTSTATUS status = NT_STATUS_NONE_MAPPED;
257 const char *attrs[] = { "sAMAccountType", ATTR_UIDNUMBER, ATTR_GIDNUMBER, NULL };
268 return NT_STATUS_INVALID_PARAMETER;
271 ads = ad_idmap_cached_connection();
273 DEBUG(1, ("ad_idmap_get_id_from_sid ADS uninitialized\n"));
274 return NT_STATUS_NOT_SUPPORTED;
277 sidstr = sid_binstring(sid);
278 if (asprintf(&expr, "(objectSid=%s)", sidstr) == -1) {
280 return NT_STATUS_NO_MEMORY;
283 rc = ads_search_retry(ads, &res, expr, attrs);
286 if (!ADS_ERR_OK(rc)) {
287 DEBUG(1, ("ad_idmap_get_id_from_sid: ads_search: %s\n", ads_errstr(rc)));
291 count = ads_count_replies(ads, res);
293 DEBUG(1, ("ad_idmap_get_id_from_sid: ads_count_replies: no results\n"));
295 } else if (count != 1) {
296 DEBUG(1, ("ad_idmap_get_id_from_sid: ads_count_replies: incorrect cardinality\n"));
300 msg = ads_first_entry(ads, res);
302 DEBUG(1, ("ad_idmap_get_id_from_sid: ads_first_entry: could not retrieve search result\n"));
306 if (!ads_pull_uint32(ads, msg, "sAMAccountType", &atype)) {
307 DEBUG(1, ("ad_idmap_get_id_from_sid: ads_pull_uint32: could not read SAM account type\n"));
311 switch (atype & 0xF0000000) {
312 case ATYPE_SECURITY_GLOBAL_GROUP:
313 case ATYPE_SECURITY_LOCAL_GROUP:
314 *id_type = ID_GROUPID;
316 case ATYPE_NORMAL_ACCOUNT:
317 case ATYPE_WORKSTATION_TRUST:
318 case ATYPE_INTERDOMAIN_TRUST:
319 *id_type = ID_USERID;
322 DEBUG(1, ("ad_idmap_get_id_from_sid: unrecognized SAM account type %08x\n", atype));
327 if (!ads_pull_uint32(ads, msg, (*id_type == ID_GROUPID) ? attr_gidnumber : attr_uidnumber, &uid)) {
328 DEBUG(1, ("ad_idmap_get_id_from_sid: ads_pull_uint32: could not read attribute '%s'\n",
329 (*id_type == ID_GROUPID) ? attr_gidnumber : attr_uidnumber));
333 unid->uid = (uid_t)uid;
335 status = NT_STATUS_OK;
336 DEBUG(1, ("ad_idmap_get_id_from_sid mapped SID [%s] to POSIX %s %d\n",
337 sid_to_string(sid_string, sid),
338 (*id_type == ID_GROUPID) ? "GID" : "UID", uid));
342 ads_msgfree(ads, res);
349 static NTSTATUS ad_idmap_set_mapping(const DOM_SID *sid, unid_t id, int id_type)
351 /* Not supported, and probably won't be... */
352 /* (It's not particularly feasible with a single-master model.) */
354 return NT_STATUS_NOT_IMPLEMENTED;
357 static NTSTATUS ad_idmap_close(void)
359 ADS_STRUCT *ads = ad_idmap_ads;
362 /* we own this ADS_STRUCT so make sure it goes away */
368 SAFE_FREE(attr_uidnumber);
369 SAFE_FREE(attr_gidnumber);
375 static NTSTATUS ad_idmap_allocate_rid(uint32 *rid, int rid_type)
377 return NT_STATUS_NOT_IMPLEMENTED;
380 static NTSTATUS ad_idmap_allocate_id(unid_t *id, int id_type)
382 return NT_STATUS_NOT_IMPLEMENTED;
385 static void ad_idmap_status(void)
387 DEBUG(0, ("AD IDMAP Status not available\n"));
390 static struct idmap_methods ad_methods = {
392 ad_idmap_allocate_rid,
393 ad_idmap_allocate_id,
394 ad_idmap_get_sid_from_id,
395 ad_idmap_get_id_from_sid,
396 ad_idmap_set_mapping,
402 /* support for new authentication subsystem */
403 NTSTATUS init_module(void)
405 return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "ad", &ad_methods);