--- /dev/null
+/*
+ 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
+
+ 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"
+#include "winbindd.h"
+
+#ifdef HAVE_ADS
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+/*
+ return our ads connections structure for a domain. We keep the connection
+ open to make things faster
+*/
+static ADS_STRUCT *ads_cached_connection(struct winbindd_domain *domain)
+{
+ ADS_STRUCT *ads;
+ ADS_STATUS status;
+
+ if (domain->private_data) {
+ ads = (ADS_STRUCT *)domain->private_data;
+
+ /* 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("MEMORY:winbind_ccache");
+ domain->private_data = NULL;
+ }
+ }
+
+ /* we don't want this to affect the users ccache */
+ setenv("KRB5CCNAME", "MEMORY:winbind_ccache", 1);
+
+ ads = ads_init(domain->alt_name, domain->name, NULL);
+ if (!ads) {
+ DEBUG(1,("ads_init for domain %s failed\n", domain->name));
+ return NULL;
+ }
+
+ /* the machine acct password might have change - fetch it every time */
+
+ SAFE_FREE(ads->auth.password);
+ SAFE_FREE(ads->auth.realm);
+
+ if ( IS_DC ) {
+ DOM_SID sid;
+ time_t last_set_time;
+
+ if ( !secrets_fetch_trusted_domain_password( domain->name, &ads->auth.password, &sid, &last_set_time ) ) {
+ ads_destroy( &ads );
+ return NULL;
+ }
+ ads->auth.realm = SMB_STRDUP( ads->server.realm );
+ strupper_m( ads->auth.realm );
+ }
+ else {
+ struct winbindd_domain *our_domain = domain;
+
+ ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
+
+ /* always give preference to the alt_name in our
+ primary domain if possible */
+
+ if ( !domain->primary )
+ our_domain = find_our_domain();
+
+ if ( our_domain->alt_name[0] != '\0' ) {
+ ads->auth.realm = SMB_STRDUP( our_domain->alt_name );
+ strupper_m( ads->auth.realm );
+ }
+ else
+ ads->auth.realm = SMB_STRDUP( lp_realm() );
+ }
+
+ status = ads_connect(ads);
+ if (!ADS_ERR_OK(status) || !ads->config.realm) {
+ extern struct winbindd_methods msrpc_methods, cache_methods;
+ DEBUG(1,("ads_connect for domain %s failed: %s\n",
+ domain->name, ads_errstr(status)));
+ ads_destroy(&ads);
+
+ /* if we get ECONNREFUSED then it might be a NT4
+ server, fall back to MSRPC */
+ if (status.error_type == ENUM_ADS_ERROR_SYSTEM &&
+ status.err.rc == ECONNREFUSED) {
+ DEBUG(1,("Trying MSRPC methods\n"));
+ if (domain->methods == &cache_methods) {
+ domain->backend = &msrpc_methods;
+ } else {
+ domain->methods = &msrpc_methods;
+ }
+ }
+ return NULL;
+ }
+
+ if (use_nss_info("sfu") && (!ads_check_sfu_mapping(ads))) {
+ DEBUG(0,("ads_cached_connection: failed to check sfu attributes\n"));
+ return NULL;
+ }
+
+ /* set the flag that says we don't own the memory even
+ though we do so that ads_destroy() won't destroy the
+ structure we pass back by reference */
+
+ ads->is_mine = False;
+
+ domain->private_data = (void *)ads;
+ return ads;
+}
+
+
+/* Query display info for a realm. This is the basic user list fn */
+static NTSTATUS query_user_list(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ uint32 *num_entries,
+ WINBIND_USERINFO **info)
+{
+ ADS_STRUCT *ads = NULL;
+ const char *attrs[] = {"userPrincipalName",
+ "sAMAccountName",
+ "name", "objectSid", "primaryGroupID",
+ "sAMAccountType",
+ ADS_ATTR_SFU_HOMEDIR_OID,
+ ADS_ATTR_SFU_SHELL_OID,
+ ADS_ATTR_SFU_GECOS_OID,
+ NULL};
+ int i, count;
+ ADS_STATUS rc;
+ void *res = NULL;
+ void *msg = NULL;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+
+ *num_entries = 0;
+
+ DEBUG(3,("ads: query_user_list\n"));
+
+ ads = ads_cached_connection(domain);
+
+ if (!ads) {
+ domain->last_status = NT_STATUS_SERVER_DISABLED;
+ goto done;
+ }
+
+ rc = ads_search_retry(ads, &res, "(objectClass=user)", attrs);
+ if (!ADS_ERR_OK(rc) || !res) {
+ DEBUG(1,("query_user_list ads_search: %s\n", ads_errstr(rc)));
+ goto done;
+ }
+
+ count = ads_count_replies(ads, res);
+ if (count == 0) {
+ DEBUG(1,("query_user_list: No users found\n"));
+ goto done;
+ }
+
+ (*info) = TALLOC_ZERO_ARRAY(mem_ctx, WINBIND_USERINFO, count);
+ if (!*info) {
+ status = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ i = 0;
+
+ for (msg = ads_first_entry(ads, res); msg; msg = ads_next_entry(ads, msg)) {
+ char *name, *gecos = NULL;
+ char *homedir = NULL;
+ char *shell = NULL;
+ uint32 group;
+ uint32 atype;
+
+ if (!ads_pull_uint32(ads, msg, "sAMAccountType", &atype) ||
+ ads_atype_map(atype) != SID_NAME_USER) {
+ DEBUG(1,("Not a user account? atype=0x%x\n", atype));
+ continue;
+ }
+
+ name = ads_pull_username(ads, mem_ctx, msg);
+
+ if (use_nss_info("sfu")) {
+ homedir = ads_pull_string(ads, mem_ctx, msg,
+ ads->schema.sfu_homedir_attr);
+ shell = ads_pull_string(ads, mem_ctx, msg,
+ ads->schema.sfu_shell_attr);
+ gecos = ads_pull_string(ads, mem_ctx, msg,
+ ads->schema.sfu_gecos_attr);
+ }
+
+ if (gecos == NULL) {
+ gecos = ads_pull_string(ads, mem_ctx, msg, "name");
+ }
+
+ if (!ads_pull_sid(ads, msg, "objectSid",
+ &(*info)[i].user_sid)) {
+ DEBUG(1,("No sid for %s !?\n", name));
+ continue;
+ }
+ if (!ads_pull_uint32(ads, msg, "primaryGroupID", &group)) {
+ DEBUG(1,("No primary group for %s !?\n", name));
+ continue;
+ }
+
+ (*info)[i].acct_name = name;
+ (*info)[i].full_name = gecos;
+ (*info)[i].homedir = homedir;
+ (*info)[i].shell = shell;
+ sid_compose(&(*info)[i].group_sid, &domain->sid, group);
+ i++;
+ }
+
+ (*num_entries) = i;
+ status = NT_STATUS_OK;
+
+ DEBUG(3,("ads query_user_list gave %d entries\n", (*num_entries)));
+
+done:
+ if (res)
+ ads_msgfree(ads, res);
+
+ return status;
+}
+
+/* list all domain groups */
+static NTSTATUS enum_dom_groups(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ uint32 *num_entries,
+ struct acct_info **info)
+{
+ ADS_STRUCT *ads = NULL;
+ const char *attrs[] = {"userPrincipalName", "sAMAccountName",
+ "name", "objectSid", NULL};
+ int i, count;
+ ADS_STATUS rc;
+ void *res = NULL;
+ void *msg = NULL;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ const char *filter;
+ BOOL enum_dom_local_groups = False;
+
+ *num_entries = 0;
+
+ DEBUG(3,("ads: enum_dom_groups\n"));
+
+ /* only grab domain local groups for our domain */
+ if ( domain->native_mode && strequal(lp_realm(), domain->alt_name) ) {
+ enum_dom_local_groups = True;
+ }
+
+ /* Workaround ADS LDAP bug present in MS W2K3 SP0 and W2K SP4 w/o
+ * rollup-fixes:
+ *
+ * According to Section 5.1(4) of RFC 2251 if a value of a type is it's
+ * default value, it MUST be absent. In case of extensible matching the
+ * "dnattr" boolean defaults to FALSE and so it must be only be present
+ * when set to TRUE.
+ *
+ * When it is set to FALSE and the OpenLDAP lib (correctly) encodes a
+ * filter using bitwise matching rule then the buggy AD fails to decode
+ * the extensible match. As a workaround set it to TRUE and thereby add
+ * the dnAttributes "dn" field to cope with those older AD versions.
+ * It should not harm and won't put any additional load on the AD since
+ * none of the dn components have a bitmask-attribute.
+ *
+ * Thanks to Ralf Haferkamp for input and testing - Guenther */
+
+ filter = talloc_asprintf(mem_ctx, "(&(objectCategory=group)(&(groupType:dn:%s:=%d)(!(groupType:dn:%s:=%d))))",
+ ADS_LDAP_MATCHING_RULE_BIT_AND, GROUP_TYPE_SECURITY_ENABLED,
+ ADS_LDAP_MATCHING_RULE_BIT_AND,
+ enum_dom_local_groups ? GROUP_TYPE_BUILTIN_LOCAL_GROUP : GROUP_TYPE_RESOURCE_GROUP);
+
+ if (filter == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ ads = ads_cached_connection(domain);
+
+ if (!ads) {
+ domain->last_status = NT_STATUS_SERVER_DISABLED;
+ goto done;
+ }
+
+ rc = ads_search_retry(ads, &res, filter, attrs);
+ if (!ADS_ERR_OK(rc) || !res) {
+ DEBUG(1,("enum_dom_groups ads_search: %s\n", ads_errstr(rc)));
+ goto done;
+ }
+
+ count = ads_count_replies(ads, res);
+ if (count == 0) {
+ DEBUG(1,("enum_dom_groups: No groups found\n"));
+ goto done;
+ }
+
+ (*info) = TALLOC_ZERO_ARRAY(mem_ctx, struct acct_info, count);
+ if (!*info) {
+ status = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ i = 0;
+
+ for (msg = ads_first_entry(ads, res); msg; msg = ads_next_entry(ads, msg)) {
+ char *name, *gecos;
+ DOM_SID sid;
+ uint32 rid;
+
+ name = ads_pull_username(ads, mem_ctx, msg);
+ gecos = ads_pull_string(ads, mem_ctx, msg, "name");
+ if (!ads_pull_sid(ads, msg, "objectSid", &sid)) {
+ DEBUG(1,("No sid for %s !?\n", name));
+ continue;
+ }
+
+ if (!sid_peek_check_rid(&domain->sid, &sid, &rid)) {
+ DEBUG(1,("No rid for %s !?\n", name));
+ continue;
+ }
+
+ fstrcpy((*info)[i].acct_name, name);
+ fstrcpy((*info)[i].acct_desc, gecos);
+ (*info)[i].rid = rid;
+ i++;
+ }
+
+ (*num_entries) = i;
+
+ status = NT_STATUS_OK;
+
+ DEBUG(3,("ads enum_dom_groups gave %d entries\n", (*num_entries)));
+
+done:
+ if (res)
+ ads_msgfree(ads, res);
+
+ return status;
+}
+
+/* list all domain local groups */
+static NTSTATUS enum_local_groups(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ uint32 *num_entries,
+ struct acct_info **info)
+{
+ /*
+ * This is a stub function only as we returned the domain
+ * local groups in enum_dom_groups() if the domain->native field
+ * was true. This is a simple performance optimization when
+ * using LDAP.
+ *
+ * if we ever need to enumerate domain local groups separately,
+ * then this the optimization in enum_dom_groups() will need
+ * to be split out
+ */
+ *num_entries = 0;
+
+ return NT_STATUS_OK;
+}
+
+/* convert a DN to a name, SID and name type
+ this might become a major speed bottleneck if groups have
+ lots of users, in which case we could cache the results
+*/
+static BOOL dn_lookup(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
+ const char *dn,
+ char **name, uint32 *name_type, DOM_SID *sid)
+{
+ void *res = NULL;
+ const char *attrs[] = {"userPrincipalName", "sAMAccountName",
+ "objectSid", "sAMAccountType", NULL};
+ ADS_STATUS rc;
+ uint32 atype;
+ DEBUG(3,("ads: dn_lookup\n"));
+
+ rc = ads_search_retry_dn(ads, &res, dn, attrs);
+
+ if (!ADS_ERR_OK(rc) || !res) {
+ goto failed;
+ }
+
+ (*name) = ads_pull_username(ads, mem_ctx, res);
+
+ if (!ads_pull_uint32(ads, res, "sAMAccountType", &atype)) {
+ goto failed;
+ }
+ (*name_type) = ads_atype_map(atype);
+
+ if (!ads_pull_sid(ads, res, "objectSid", sid)) {
+ goto failed;
+ }
+
+ if (res)
+ ads_msgfree(ads, res);
+
+ return True;
+
+failed:
+ if (res)
+ ads_msgfree(ads, res);
+
+ return False;
+}
+
+/* Lookup user information from a rid */
+static NTSTATUS query_user(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ const DOM_SID *sid,
+ WINBIND_USERINFO *info)
+{
+ ADS_STRUCT *ads = NULL;
+ const char *attrs[] = {"userPrincipalName",
+ "sAMAccountName",
+ "name",
+ "primaryGroupID",
+ ADS_ATTR_SFU_HOMEDIR_OID,
+ ADS_ATTR_SFU_SHELL_OID,
+ ADS_ATTR_SFU_GECOS_OID,
+ NULL};
+ ADS_STATUS rc;
+ int count;
+ void *msg = NULL;
+ char *ldap_exp;
+ char *sidstr;
+ uint32 group_rid;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+
+ DEBUG(3,("ads: query_user\n"));
+
+ ads = ads_cached_connection(domain);
+
+ if (!ads) {
+ domain->last_status = NT_STATUS_SERVER_DISABLED;
+ goto done;
+ }
+
+ sidstr = sid_binstring(sid);
+ asprintf(&ldap_exp, "(objectSid=%s)", sidstr);
+ rc = ads_search_retry(ads, &msg, ldap_exp, attrs);
+ free(ldap_exp);
+ free(sidstr);
+ if (!ADS_ERR_OK(rc) || !msg) {
+ DEBUG(1,("query_user(sid=%s) ads_search: %s\n",
+ sid_string_static(sid), ads_errstr(rc)));
+ goto done;
+ }
+
+ count = ads_count_replies(ads, msg);
+ if (count != 1) {
+ DEBUG(1,("query_user(sid=%s): Not found\n",
+ sid_string_static(sid)));
+ goto done;
+ }
+
+ info->acct_name = ads_pull_username(ads, mem_ctx, msg);
+
+ if (use_nss_info("sfu")) {
+ info->homedir = ads_pull_string(ads, mem_ctx, msg,
+ ads->schema.sfu_homedir_attr);
+ info->shell = ads_pull_string(ads, mem_ctx, msg,
+ ads->schema.sfu_shell_attr);
+ info->full_name = ads_pull_string(ads, mem_ctx, msg,
+ ads->schema.sfu_gecos_attr);
+ }
+
+ if (info->full_name == NULL) {
+ info->full_name = ads_pull_string(ads, mem_ctx, msg, "name");
+ }
+
+ if (!ads_pull_uint32(ads, msg, "primaryGroupID", &group_rid)) {
+ DEBUG(1,("No primary group for %s !?\n",
+ sid_string_static(sid)));
+ goto done;
+ }
+
+ sid_copy(&info->user_sid, sid);
+ sid_compose(&info->group_sid, &domain->sid, group_rid);
+
+ status = NT_STATUS_OK;
+
+ DEBUG(3,("ads query_user gave %s\n", info->acct_name));
+done:
+ if (msg)
+ ads_msgfree(ads, msg);
+
+ return status;
+}
+
+/* Lookup groups a user is a member of - alternate method, for when
+ tokenGroups are not available. */
+static NTSTATUS lookup_usergroups_alt(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ const char *user_dn,
+ DOM_SID *primary_group,
+ size_t *p_num_groups, DOM_SID **user_sids)
+{
+ ADS_STATUS rc;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ int count;
+ void *res = NULL;
+ void *msg = NULL;
+ char *ldap_exp;
+ ADS_STRUCT *ads;
+ const char *group_attrs[] = {"objectSid", NULL};
+ char *escaped_dn;
+ size_t num_groups = 0;
+
+ DEBUG(3,("ads: lookup_usergroups_alt\n"));
+
+ ads = ads_cached_connection(domain);
+
+ if (!ads) {
+ domain->last_status = NT_STATUS_SERVER_DISABLED;
+ goto done;
+ }
+
+ if (!(escaped_dn = escape_ldap_string_alloc(user_dn))) {
+ status = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ /* buggy server, no tokenGroups. Instead lookup what groups this user
+ is a member of by DN search on member*/
+
+ if (!(ldap_exp = talloc_asprintf(mem_ctx, "(&(member=%s)(objectClass=group))", escaped_dn))) {
+ DEBUG(1,("lookup_usergroups(dn=%s) asprintf failed!\n", user_dn));
+ SAFE_FREE(escaped_dn);
+ status = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ SAFE_FREE(escaped_dn);
+
+ rc = ads_search_retry(ads, &res, ldap_exp, group_attrs);
+
+ if (!ADS_ERR_OK(rc) || !res) {
+ DEBUG(1,("lookup_usergroups ads_search member=%s: %s\n", user_dn, ads_errstr(rc)));
+ return ads_ntstatus(rc);
+ }
+
+ count = ads_count_replies(ads, res);
+
+ *user_sids = NULL;
+ num_groups = 0;
+
+ /* always add the primary group to the sid array */
+ add_sid_to_array(mem_ctx, primary_group, user_sids, &num_groups);
+
+ if (count > 0) {
+ for (msg = ads_first_entry(ads, res); msg;
+ msg = ads_next_entry(ads, msg)) {
+ DOM_SID group_sid;
+
+ if (!ads_pull_sid(ads, msg, "objectSid", &group_sid)) {
+ DEBUG(1,("No sid for this group ?!?\n"));
+ continue;
+ }
+
+ add_sid_to_array(mem_ctx, &group_sid, user_sids,
+ &num_groups);
+ }
+
+ }
+
+ *p_num_groups = num_groups;
+ status = (user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
+
+ DEBUG(3,("ads lookup_usergroups (alt) for dn=%s\n", user_dn));
+done:
+ if (res)
+ ads_msgfree(ads, res);
+
+ return status;
+}
+
+/* Lookup groups a user is a member of. */
+static NTSTATUS lookup_usergroups(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ const DOM_SID *sid,
+ uint32 *p_num_groups, DOM_SID **user_sids)
+{
+ ADS_STRUCT *ads = NULL;
+ const char *attrs[] = {"tokenGroups", "primaryGroupID", NULL};
+ ADS_STATUS rc;
+ int count;
+ LDAPMessage *msg = NULL;
+ char *user_dn;
+ DOM_SID *sids;
+ int i;
+ DOM_SID primary_group;
+ uint32 primary_group_rid;
+ fstring sid_string;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ size_t num_groups = 0;
+
+ DEBUG(3,("ads: lookup_usergroups\n"));
+ *p_num_groups = 0;
+
+ ads = ads_cached_connection(domain);
+
+ if (!ads) {
+ domain->last_status = NT_STATUS_SERVER_DISABLED;
+ status = NT_STATUS_SERVER_DISABLED;
+ goto done;
+ }
+
+ rc = ads_sid_to_dn(ads, mem_ctx, sid, &user_dn);
+ if (!ADS_ERR_OK(rc)) {
+ status = ads_ntstatus(rc);
+ goto done;
+ }
+
+ rc = ads_search_retry_dn(ads, (void**)(void *)&msg, user_dn, attrs);
+ if (!ADS_ERR_OK(rc)) {
+ status = ads_ntstatus(rc);
+ DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: %s\n",
+ sid_to_string(sid_string, sid), ads_errstr(rc)));
+ goto done;
+ }
+
+ if (!msg) {
+ DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: NULL msg\n",
+ sid_to_string(sid_string, sid)));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto done;
+ }
+
+ if (!ads_pull_uint32(ads, msg, "primaryGroupID", &primary_group_rid)) {
+ DEBUG(1,("%s: No primary group for sid=%s !?\n",
+ domain->name, sid_to_string(sid_string, sid)));
+ goto done;
+ }
+
+ sid_copy(&primary_group, &domain->sid);
+ sid_append_rid(&primary_group, primary_group_rid);
+
+ count = ads_pull_sids(ads, mem_ctx, msg, "tokenGroups", &sids);
+
+ if (msg)
+ ads_msgfree(ads, msg);
+
+ /* there must always be at least one group in the token,
+ unless we are talking to a buggy Win2k server */
+ if (count == 0) {
+ status = lookup_usergroups_alt(domain, mem_ctx, user_dn,
+ &primary_group,
+ &num_groups, user_sids);
+ *p_num_groups = (uint32)num_groups;
+ return status;
+ }
+
+ *user_sids = NULL;
+ num_groups = 0;
+
+ add_sid_to_array(mem_ctx, &primary_group, user_sids, &num_groups);
+
+ for (i=0;i<count;i++) {
+
+ /* ignore Builtin groups from ADS - Guenther */
+ if (sid_check_is_in_builtin(&sids[i])) {
+ continue;
+ }
+
+ add_sid_to_array_unique(mem_ctx, &sids[i],
+ user_sids, &num_groups);
+ }
+
+ *p_num_groups = (uint32)num_groups;
+ status = (user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
+
+ DEBUG(3,("ads lookup_usergroups for sid=%s\n",
+ sid_to_string(sid_string, sid)));
+done:
+ return status;
+}
+
+/*
+ find the members of a group, given a group rid and domain
+ */
+static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ const DOM_SID *group_sid, uint32 *num_names,
+ DOM_SID **sid_mem, char ***names,
+ uint32 **name_types)
+{
+ ADS_STATUS rc;
+ int count;
+ void *res=NULL;
+ ADS_STRUCT *ads = NULL;
+ char *ldap_exp;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ char *sidstr;
+ char **members;
+ int i;
+ size_t num_members;
+ fstring sid_string;
+ BOOL more_values;
+ const char **attrs;
+ uint32 first_usn;
+ uint32 current_usn;
+ int num_retries = 0;
+
+ DEBUG(10,("ads: lookup_groupmem %s sid=%s\n", domain->name,
+ sid_string_static(group_sid)));
+
+ *num_names = 0;
+
+ ads = ads_cached_connection(domain);
+
+ if (!ads) {
+ domain->last_status = NT_STATUS_SERVER_DISABLED;
+ goto done;
+ }
+
+ sidstr = sid_binstring(group_sid);
+
+ /* search for all members of the group */
+ if (!(ldap_exp = talloc_asprintf(mem_ctx, "(objectSid=%s)",sidstr))) {
+ SAFE_FREE(sidstr);
+ DEBUG(1, ("ads: lookup_groupmem: tallloc_asprintf for ldap_exp failed!\n"));
+ status = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+ SAFE_FREE(sidstr);
+
+ members = NULL;
+ num_members = 0;
+
+ attrs = TALLOC_ARRAY(mem_ctx, const char *, 3);
+ attrs[1] = talloc_strdup(mem_ctx, "usnChanged");
+ attrs[2] = NULL;
+
+ do {
+ if (num_members == 0)
+ attrs[0] = talloc_strdup(mem_ctx, "member");
+
+ DEBUG(10, ("Searching for attrs[0] = %s, attrs[1] = %s\n", attrs[0], attrs[1]));
+
+ rc = ads_search_retry(ads, &res, ldap_exp, attrs);
+
+ if (!ADS_ERR_OK(rc) || !res) {
+ DEBUG(1,("ads: lookup_groupmem ads_search: %s\n",
+ ads_errstr(rc)));
+ status = ads_ntstatus(rc);
+ goto done;
+ }
+
+ count = ads_count_replies(ads, res);
+ if (count == 0)
+ break;
+
+ if (num_members == 0) {
+ if (!ads_pull_uint32(ads, res, "usnChanged", &first_usn)) {
+ DEBUG(1, ("ads: lookup_groupmem could not pull usnChanged!\n"));
+ goto done;
+ }
+ }
+
+ if (!ads_pull_uint32(ads, res, "usnChanged", ¤t_usn)) {
+ DEBUG(1, ("ads: lookup_groupmem could not pull usnChanged!\n"));
+ goto done;
+ }
+
+ if (first_usn != current_usn) {
+ DEBUG(5, ("ads: lookup_groupmem USN on this record changed"
+ " - restarting search\n"));
+ if (num_retries < 5) {
+ num_retries++;
+ num_members = 0;
+ continue;
+ } else {
+ DEBUG(5, ("ads: lookup_groupmem USN on this record changed"
+ " - restarted search too many times, aborting!\n"));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto done;
+ }
+ }
+
+ members = ads_pull_strings_range(ads, mem_ctx, res,
+ "member",
+ members,
+ &attrs[0],
+ &num_members,
+ &more_values);
+
+ if ((members == NULL) || (num_members == 0))
+ break;
+
+ } while (more_values);
+
+ /* now we need to turn a list of members into rids, names and name types
+ the problem is that the members are in the form of distinguised names
+ */
+
+ (*sid_mem) = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, num_members);
+ (*name_types) = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_members);
+ (*names) = TALLOC_ZERO_ARRAY(mem_ctx, char *, num_members);
+
+ for (i=0;i<num_members;i++) {
+ uint32 name_type;
+ char *name;
+ DOM_SID sid;
+
+ if (dn_lookup(ads, mem_ctx, members[i], &name, &name_type, &sid)) {
+ (*names)[*num_names] = name;
+ (*name_types)[*num_names] = name_type;
+ sid_copy(&(*sid_mem)[*num_names], &sid);
+ (*num_names)++;
+ }
+ }
+
+ status = NT_STATUS_OK;
+ DEBUG(3,("ads lookup_groupmem for sid=%s\n", sid_to_string(sid_string, group_sid)));
+done:
+
+ if (res)
+ ads_msgfree(ads, res);
+
+ return status;
+}
+
+/* find the sequence number for a domain */
+static NTSTATUS sequence_number(struct winbindd_domain *domain, uint32 *seq)
+{
+ ADS_STRUCT *ads = NULL;
+ ADS_STATUS rc;
+
+ DEBUG(3,("ads: fetch sequence_number for %s\n", domain->name));
+
+ *seq = DOM_SEQUENCE_NONE;
+
+ ads = ads_cached_connection(domain);
+
+ if (!ads) {
+ domain->last_status = NT_STATUS_SERVER_DISABLED;
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ rc = ads_USN(ads, seq);
+
+ if (!ADS_ERR_OK(rc)) {
+
+ /* its a dead connection ; don't destroy it
+ through since ads_USN() has already done
+ that indirectly */
+
+ domain->private_data = NULL;
+ }
+ return ads_ntstatus(rc);
+}
+
+/* get a list of trusted domains */
+static NTSTATUS trusted_domains(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ uint32 *num_domains,
+ char ***names,
+ char ***alt_names,
+ DOM_SID **dom_sids)
+{
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+ struct ds_domain_trust *domains = NULL;
+ int count = 0;
+ int i;
+ /* i think we only need our forest and downlevel trusted domains */
+ uint32 flags = DS_DOMAIN_IN_FOREST | DS_DOMAIN_DIRECT_OUTBOUND;
+ struct rpc_pipe_client *cli;
+
+ DEBUG(3,("ads: trusted_domains\n"));
+
+ *num_domains = 0;
+ *alt_names = NULL;
+ *names = NULL;
+ *dom_sids = NULL;
+
+ result = cm_connect_netlogon(domain, &cli);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(5, ("trusted_domains: Could not open a connection to %s "
+ "for PIPE_NETLOGON (%s)\n",
+ domain->name, nt_errstr(result)));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ if ( NT_STATUS_IS_OK(result) ) {
+ result = rpccli_ds_enum_domain_trusts(cli, mem_ctx,
+ cli->cli->desthost,
+ flags, &domains,
+ (unsigned int *)&count);
+ }
+
+ if ( NT_STATUS_IS_OK(result) && count) {
+
+ /* Allocate memory for trusted domain names and sids */
+
+ if ( !(*names = TALLOC_ARRAY(mem_ctx, char *, count)) ) {
+ DEBUG(0, ("trusted_domains: out of memory\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if ( !(*alt_names = TALLOC_ARRAY(mem_ctx, char *, count)) ) {
+ DEBUG(0, ("trusted_domains: out of memory\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if ( !(*dom_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, count)) ) {
+ DEBUG(0, ("trusted_domains: out of memory\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Copy across names and sids */
+
+ for (i = 0; i < count; i++) {
+ (*names)[i] = domains[i].netbios_domain;
+ (*alt_names)[i] = domains[i].dns_domain;
+
+ sid_copy(&(*dom_sids)[i], &domains[i].sid);
+ }
+
+ *num_domains = count;
+ }
+
+ return result;
+}
+
+/* the ADS backend methods are exposed via this structure */
+struct winbindd_methods ads_methods = {
+ True,
+ query_user_list,
+ enum_dom_groups,
+ enum_local_groups,
+ msrpc_name_to_sid,
+ msrpc_sid_to_name,
+ query_user,
+ lookup_usergroups,
+ msrpc_lookup_useraliases,
+ lookup_groupmem,
+ sequence_number,
+ trusted_domains,
+};
+
+#endif
projects / samba / blobdiff