--- /dev/null
+/*
+ * idmap_ad: map between Active Directory and RFC 2307 or "Services for Unix" (SFU) Accounts
+ *
+ * Unix SMB/CIFS implementation.
+ *
+ * Winbind ADS backend functions
+ *
+ * Copyright (C) Andrew Tridgell 2001
+ * Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
+ * Copyright (C) Gerald (Jerry) Carter 2004
+ * Copyright (C) Luke Howard 2001-2004
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_IDMAP
+
+#ifndef ATTR_UIDNUMBER
+#define ATTR_UIDNUMBER ADS_ATTR_SFU_UIDNUMBER_OID
+#endif
+
+#ifndef ATTR_GIDNUMBER
+#define ATTR_GIDNUMBER ADS_ATTR_SFU_GIDNUMBER_OID
+#endif
+
+#define WINBIND_CCACHE_NAME "MEMORY:winbind_ccache"
+
+NTSTATUS init_module(void);
+
+static ADS_STRUCT *ad_idmap_ads = NULL;
+static char *ad_idmap_uri = NULL;
+
+static char *attr_uidnumber = NULL;
+static char *attr_gidnumber = NULL;
+
+static BOOL ad_idmap_check_attr_mapping(ADS_STRUCT *ads)
+{
+ if (attr_uidnumber != NULL && attr_gidnumber != NULL) {
+ return True;
+ }
+
+ if (use_nss_info("sfu")) {
+
+ if (!ads_check_sfu_mapping(ads)) {
+ DEBUG(0,("ad_idmap_check_attr_mapping: failed to check for SFU schema\n"));
+ return False;
+ }
+
+ attr_uidnumber = SMB_STRDUP(ads->schema.sfu_uidnumber_attr);
+ attr_gidnumber = SMB_STRDUP(ads->schema.sfu_gidnumber_attr);
+
+ } else {
+ attr_uidnumber = SMB_STRDUP("uidNumber");
+ attr_gidnumber = SMB_STRDUP("gidNumber");
+ }
+
+ return True;
+}
+
+static ADS_STRUCT *ad_idmap_cached_connection(void)
+{
+ ADS_STRUCT *ads;
+ ADS_STATUS status;
+ BOOL local = False;
+
+#ifdef ADS_AUTH_EXTERNAL_BIND
+ local = ((strncmp(ad_idmap_uri, "ldapi://", sizeof("ldapi://") - 1)) == 0);
+#endif /* ADS_AUTH_EXTERNAL_BIND */
+
+ if (ad_idmap_ads != NULL) {
+ ads = ad_idmap_ads;
+
+ /* check for a valid structure */
+
+ DEBUG(7, ("Current tickets expire at %d, time is now %d\n",
+ (uint32) ads->auth.expire, (uint32) time(NULL)));
+ if ( ads->config.realm && (ads->auth.expire > time(NULL))) {
+ return ads;
+ } else {
+ /* we own this ADS_STRUCT so make sure it goes away */
+ ads->is_mine = True;
+ ads_destroy( &ads );
+ ads_kdestroy(WINBIND_CCACHE_NAME);
+ ad_idmap_ads = NULL;
+ }
+ }
+
+ if (!local) {
+ /* we don't want this to affect the users ccache */
+ setenv("KRB5CCNAME", WINBIND_CCACHE_NAME, 1);
+ }
+
+ ads = ads_init(NULL, NULL, NULL);
+ if (!ads) {
+ DEBUG(1,("ads_init failed\n"));
+ return NULL;
+ }
+
+ /* if ad_imap_uri is not empty we try to connect to
+ * the given URI in smb.conf. Else try to connect to
+ * one of the DCs
+ */
+ if (*ad_idmap_uri != '\0') {
+ ads->server.ldap_uri = SMB_STRDUP(ad_idmap_uri);
+ if (ads->server.ldap_uri == NULL) {
+ return NULL;
+ }
+ }
+ else {
+ ads->server.ldap_uri = NULL;
+ ads->server.ldap_server = NULL;
+ }
+
+#ifdef ADS_AUTH_EXTERNAL_BIND
+ if (local)
+ ads->auth.flags |= ADS_AUTH_EXTERNAL_BIND;
+ else
+#endif
+ {
+ /* the machine acct password might have change - fetch it every time */
+ SAFE_FREE(ads->auth.password);
+ ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
+
+ SAFE_FREE(ads->auth.realm);
+ ads->auth.realm = SMB_STRDUP(lp_realm());
+ }
+
+ status = ads_connect(ads);
+ if (!ADS_ERR_OK(status)) {
+ DEBUG(1, ("ad_idmap_init: failed to connect to AD\n"));
+ ads_destroy(&ads);
+ return NULL;
+ }
+
+ ads->is_mine = False;
+
+ if (!ad_idmap_check_attr_mapping(ads)) {
+ DEBUG(1, ("ad_idmap_init: failed to check attribute mapping\n"));
+ return NULL;
+ }
+
+ ad_idmap_ads = ads;
+ return ads;
+}
+
+static NTSTATUS ad_idmap_init(char *uri)
+{
+ ad_idmap_uri = SMB_STRDUP(uri);
+ if (ad_idmap_uri == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ad_idmap_get_sid_from_id(DOM_SID *sid, unid_t unid, int id_type)
+{
+ ADS_STATUS rc;
+ NTSTATUS status = NT_STATUS_NONE_MAPPED;
+ const char *attrs[] = { "objectSid", NULL };
+ void *res = NULL;
+ void *msg = NULL;
+ char *expr = NULL;
+ fstring sid_string;
+ int count;
+ ADS_STRUCT *ads;
+
+ if (sid == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ ads = ad_idmap_cached_connection();
+ if (ads == NULL) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid ADS uninitialized\n"));
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ switch (id_type & ID_TYPEMASK) {
+ case ID_USERID:
+ if (asprintf(&expr, "(&(|(sAMAccountType=%d)(sAMAccountType=%d)(sAMAccountType=%d))(%s=%d))",
+ ATYPE_NORMAL_ACCOUNT, ATYPE_WORKSTATION_TRUST, ATYPE_INTERDOMAIN_TRUST,
+ ATTR_UIDNUMBER, (int)unid.uid) == -1) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ break;
+ case ID_GROUPID:
+ if (asprintf(&expr, "(&(|(sAMAccountType=%d)(sAMAccountType=%d))(%s=%d))",
+ ATYPE_SECURITY_GLOBAL_GROUP, ATYPE_SECURITY_LOCAL_GROUP,
+ ATTR_GIDNUMBER, (int)unid.gid) == -1) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ break;
+ default:
+ return NT_STATUS_INVALID_PARAMETER;
+ break;
+ }
+
+ rc = ads_search_retry(ads, &res, expr, attrs);
+ free(expr);
+ if (!ADS_ERR_OK(rc)) {
+ DEBUG(1, ("ad_idmap_get_sid_from_id: ads_search: %s\n", ads_errstr(rc)));
+ goto done;
+ }
+
+ count = ads_count_replies(ads, res);
+ if (count == 0) {
+ DEBUG(1, ("ad_idmap_get_sid_from_id: ads_count_replies: no results\n"));
+ goto done;
+ } else if (count != 1) {
+ DEBUG(1, ("ad_idmap_get_sid_from_id: ads_count_replies: incorrect cardinality\n"));
+ goto done;
+ }
+
+ msg = ads_first_entry(ads, res);
+ if (msg == NULL) {
+ DEBUG(1, ("ad_idmap_get_sid_from_id: ads_first_entry: could not retrieve search result\n"));
+ goto done;
+ }
+
+ if (!ads_pull_sid(ads, msg, "objectSid", sid)) {
+ DEBUG(1, ("ad_idmap_get_sid_from_id: ads_pull_sid: could not retrieve SID from entry\n"));
+ goto done;
+ }
+
+ status = NT_STATUS_OK;
+ DEBUG(1, ("ad_idmap_get_sid_from_id mapped POSIX %s %d to SID [%s]\n",
+ (id_type == ID_GROUPID) ? "GID" : "UID", (int)unid.uid,
+ sid_to_string(sid_string, sid)));
+
+done:
+ if (res != NULL) {
+ ads_msgfree(ads, res);
+ }
+
+ return status;
+}
+
+static NTSTATUS ad_idmap_get_id_from_sid(unid_t *unid, int *id_type, const DOM_SID *sid)
+{
+ ADS_STATUS rc;
+ NTSTATUS status = NT_STATUS_NONE_MAPPED;
+ const char *attrs[] = { "sAMAccountType", ATTR_UIDNUMBER, ATTR_GIDNUMBER, NULL };
+ void *res = NULL;
+ void *msg = NULL;
+ char *expr = NULL;
+ uint32 atype, uid;
+ char *sidstr;
+ fstring sid_string;
+ int count;
+ ADS_STRUCT *ads;
+
+ if (unid == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ ads = ad_idmap_cached_connection();
+ if (ads == NULL) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid ADS uninitialized\n"));
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ sidstr = sid_binstring(sid);
+ if (asprintf(&expr, "(objectSid=%s)", sidstr) == -1) {
+ free(sidstr);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ rc = ads_search_retry(ads, &res, expr, attrs);
+ free(sidstr);
+ free(expr);
+ if (!ADS_ERR_OK(rc)) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid: ads_search: %s\n", ads_errstr(rc)));
+ goto done;
+ }
+
+ count = ads_count_replies(ads, res);
+ if (count == 0) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid: ads_count_replies: no results\n"));
+ goto done;
+ } else if (count != 1) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid: ads_count_replies: incorrect cardinality\n"));
+ goto done;
+ }
+
+ msg = ads_first_entry(ads, res);
+ if (msg == NULL) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid: ads_first_entry: could not retrieve search result\n"));
+ goto done;
+ }
+
+ if (!ads_pull_uint32(ads, msg, "sAMAccountType", &atype)) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid: ads_pull_uint32: could not read SAM account type\n"));
+ goto done;
+ }
+
+ switch (atype & 0xF0000000) {
+ case ATYPE_SECURITY_GLOBAL_GROUP:
+ case ATYPE_SECURITY_LOCAL_GROUP:
+ *id_type = ID_GROUPID;
+ break;
+ case ATYPE_NORMAL_ACCOUNT:
+ case ATYPE_WORKSTATION_TRUST:
+ case ATYPE_INTERDOMAIN_TRUST:
+ *id_type = ID_USERID;
+ break;
+ default:
+ DEBUG(1, ("ad_idmap_get_id_from_sid: unrecognized SAM account type %08x\n", atype));
+ goto done;
+ break;
+ }
+
+ if (!ads_pull_uint32(ads, msg, (*id_type == ID_GROUPID) ? attr_gidnumber : attr_uidnumber, &uid)) {
+ DEBUG(1, ("ad_idmap_get_id_from_sid: ads_pull_uint32: could not read attribute '%s'\n",
+ (*id_type == ID_GROUPID) ? attr_gidnumber : attr_uidnumber));
+ goto done;
+ }
+
+ unid->uid = (uid_t)uid;
+
+ status = NT_STATUS_OK;
+ DEBUG(1, ("ad_idmap_get_id_from_sid mapped SID [%s] to POSIX %s %d\n",
+ sid_to_string(sid_string, sid),
+ (*id_type == ID_GROUPID) ? "GID" : "UID", uid));
+
+done:
+ if (res != NULL) {
+ ads_msgfree(ads, res);
+ }
+
+ return status;
+
+}
+
+static NTSTATUS ad_idmap_set_mapping(const DOM_SID *sid, unid_t id, int id_type)
+{
+ /* Not supported, and probably won't be... */
+ /* (It's not particularly feasible with a single-master model.) */
+
+ return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS ad_idmap_close(void)
+{
+ ADS_STRUCT *ads = ad_idmap_ads;
+
+ if (ads != NULL) {
+ /* we own this ADS_STRUCT so make sure it goes away */
+ ads->is_mine = True;
+ ads_destroy( &ads );
+ ad_idmap_ads = NULL;
+ }
+
+ SAFE_FREE(attr_uidnumber);
+ SAFE_FREE(attr_gidnumber);
+
+ return NT_STATUS_OK;
+}
+
+/* New for beta3 */
+static NTSTATUS ad_idmap_allocate_rid(uint32 *rid, int rid_type)
+{
+ return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS ad_idmap_allocate_id(unid_t *id, int id_type)
+{
+ return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static void ad_idmap_status(void)
+{
+ DEBUG(0, ("AD IDMAP Status not available\n"));
+}
+
+static struct idmap_methods ad_methods = {
+ ad_idmap_init,
+ ad_idmap_allocate_rid,
+ ad_idmap_allocate_id,
+ ad_idmap_get_sid_from_id,
+ ad_idmap_get_id_from_sid,
+ ad_idmap_set_mapping,
+ ad_idmap_close,
+ ad_idmap_status
+};
+
+
+/* support for new authentication subsystem */
+NTSTATUS init_module(void)
+{
+ return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "ad", &ad_methods);
+}
+
projects / samba / blobdiff