/* 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; enum wb_posix_mapping map_type; DEBUG(10,("ads_cached_connection\n")); 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() ); } ads->auth.renewable = WINBINDD_PAM_AUTH_KRB5_RENEW_TIME; 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; } map_type = get_nss_info(domain->name); if ((map_type == WB_POSIX_MAP_RFC2307)|| (map_type == WB_POSIX_MAP_SFU)) { status = ads_check_posix_schema_mapping(ads, map_type); if (!ADS_ERR_OK(status)) { DEBUG(10,("ads_check_posix_schema_mapping failed " "with: %s\n", ads_errstr(status))); } } /* 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, ADS_ATTR_RFC2307_HOMEDIR_OID, ADS_ATTR_RFC2307_SHELL_OID, ADS_ATTR_RFC2307_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, "(objectCategory=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 (get_nss_info(domain->name) && ads->schema.map_type) { DEBUG(10,("pulling posix attributes (%s schema)\n", wb_posix_map_str(ads->schema.map_type))); homedir = ads_pull_string(ads, mem_ctx, msg, ads->schema.posix_homedir_attr); shell = ads_pull_string(ads, mem_ctx, msg, ads->schema.posix_shell_attr); gecos = ads_pull_string(ads, mem_ctx, msg, ads->schema.posix_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, ADS_ATTR_RFC2307_HOMEDIR_OID, ADS_ATTR_RFC2307_SHELL_OID, ADS_ATTR_RFC2307_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 (get_nss_info(domain->name) && ads->schema.map_type) { DEBUG(10,("pulling posix attributes (%s schema)\n", wb_posix_map_str(ads->schema.map_type))); info->homedir = ads_pull_string(ads, mem_ctx, msg, ads->schema.posix_homedir_attr); info->shell = ads_pull_string(ads, mem_ctx, msg, ads->schema.posix_shell_attr); info->full_name = ads_pull_string(ads, mem_ctx, msg, ads->schema.posix_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_member(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_member\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; } if (!(ldap_exp = talloc_asprintf(mem_ctx, "(&(member=%s)(objectCategory=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; } /* ignore Builtin groups from ADS - Guenther */ if (sid_check_is_in_builtin(&group_sid)) { 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 (member) succeeded for dn=%s\n", user_dn)); done: if (res) ads_msgfree(ads, res); return status; } /* Lookup groups a user is a member of - alternate method, for when tokenGroups are not available. */ static NTSTATUS lookup_usergroups_memberof(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; ADS_STRUCT *ads; const char *attrs[] = {"memberOf", NULL}; size_t num_groups = 0; DOM_SID *group_sids = NULL; int i; DEBUG(3,("ads: lookup_usergroups_memberof\n")); ads = ads_cached_connection(domain); if (!ads) { domain->last_status = NT_STATUS_SERVER_DISABLED; goto done; } rc = ads_search_retry_extended_dn(ads, &res, user_dn, attrs, ADS_EXTENDED_DN_HEX_STRING); if (!ADS_ERR_OK(rc) || !res) { DEBUG(1,("lookup_usergroups_memberof ads_search member=%s: %s\n", user_dn, ads_errstr(rc))); return ads_ntstatus(rc); } count = ads_count_replies(ads, res); if (count == 0) { status = NT_STATUS_NO_SUCH_USER; goto done; } *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); count = ads_pull_sids_from_extendeddn(ads, mem_ctx, res, "memberOf", ADS_EXTENDED_DN_HEX_STRING, &group_sids); if (count == 0) { DEBUG(1,("No memberOf for this user?!?\n")); status = NT_STATUS_NO_MEMORY; goto done; } for (i=0; i<count; i++) { /* ignore Builtin groups from ADS - Guenther */ if (sid_check_is_in_builtin(&group_sids[i])) { continue; } add_sid_to_array(mem_ctx, &group_sids[i], 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 (memberof) succeeded for dn=%s\n", user_dn)); done: TALLOC_FREE(group_sids); 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 = NULL; 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; status = lookup_usergroups_cached(domain, mem_ctx, sid, p_num_groups, user_sids); if (NT_STATUS_IS_OK(status)) { return NT_STATUS_OK; } ads = ads_cached_connection(domain); if (!ads) { domain->last_status = NT_STATUS_SERVER_DISABLED; status = NT_STATUS_SERVER_DISABLED; goto done; } rc = ads_search_retry_sid(ads, (void**)(void *)&msg, sid, 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; } count = ads_count_replies(ads, msg); if (count != 1) { status = NT_STATUS_UNSUCCESSFUL; DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: " "invalid number of results (count=%d)\n", sid_to_string(sid_string, sid), count)); 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; } user_dn = ads_get_dn(ads, msg); if (user_dn == NULL) { status = NT_STATUS_NO_MEMORY; 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); /* there must always be at least one group in the token, unless we are talking to a buggy Win2k server */ /* actually this only happens when the machine account has no read * permissions on the tokenGroup attribute - gd */ if (count == 0) { /* no tokenGroups */ /* lookup what groups this user is a member of by DN search on * "memberOf" */ status = lookup_usergroups_memberof(domain, mem_ctx, user_dn, &primary_group, &num_groups, user_sids); *p_num_groups = (uint32)num_groups; if (NT_STATUS_IS_OK(status)) { goto done; } /* lookup what groups this user is a member of by DN search on * "member" */ status = lookup_usergroups_member(domain, mem_ctx, user_dn, &primary_group, &num_groups, user_sids); *p_num_groups = (uint32)num_groups; goto done; } *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 (tokenGroups) succeeded for sid=%s\n", sid_to_string(sid_string, sid))); done: ads_memfree(ads, user_dn); ads_msgfree(ads, msg); 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; } if ((sidstr = sid_binstring(group_sid)) == NULL) { status = NT_STATUS_NO_MEMORY; goto done; } /* 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; if ((attrs = TALLOC_ARRAY(mem_ctx, const char *, 3)) == NULL) { status = NT_STATUS_NO_MEMORY; goto done; } 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); if ((num_members != 0) && ((members == NULL) || (*sid_mem == NULL) || (*name_types == NULL) || (*names == NULL))) { DEBUG(1, ("talloc failed\n")); status = NT_STATUS_NO_MEMORY; goto done; } 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; 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, msrpc_rids_to_names, query_user, lookup_usergroups, msrpc_lookup_useraliases, lookup_groupmem, sequence_number, msrpc_lockout_policy, msrpc_password_policy, trusted_domains, }; #endif