diff options
author | Gerald Carter <jerry@samba.org> | 2007-02-19 17:19:25 +0000 |
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committer | Gerald Carter <jerry@samba.org> | 2007-02-19 17:19:25 +0000 |
commit | 734c37588f09893bf583e3fad6bd8cb4aca0560a (patch) | |
tree | c1c1bc1f8f040288dd3a1edb19959455f55c617e /source/groupdb | |
parent | 1a4f29eb23df0783c1373b75cbc4bd2e79612301 (diff) | |
download | samba-734c37588f09893bf583e3fad6bd8cb4aca0560a.tar.gz samba-734c37588f09893bf583e3fad6bd8cb4aca0560a.tar.xz samba-734c37588f09893bf583e3fad6bd8cb4aca0560a.zip |
r21452: Revert to tdb group_mapping implementation for 3.0.25 release.
No other changes here.
Diffstat (limited to 'source/groupdb')
-rw-r--r-- | source/groupdb/mapping_ldb.c | 686 |
1 files changed, 0 insertions, 686 deletions
diff --git a/source/groupdb/mapping_ldb.c b/source/groupdb/mapping_ldb.c deleted file mode 100644 index a743c2456e3..00000000000 --- a/source/groupdb/mapping_ldb.c +++ /dev/null @@ -1,686 +0,0 @@ -/* - * Unix SMB/CIFS implementation. - * - * group mapping code on top of ldb - * - * Copyright (C) Andrew Tridgell 2006 - * - * based on tdb group mapping code from groupdb/mapping.c - * - * 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 "groupdb/mapping.h" -#include "lib/ldb/include/includes.h" -#include "lib/ldb/include/ldb_errors.h" - -static struct ldb_context *ldb; - -static BOOL mapping_upgrade(const char *tdb_path); - -/* - connect to the group mapping ldb -*/ - BOOL init_group_mapping(void) -{ - BOOL existed; - const char *init_ldif[] = - { "dn: @ATTRIBUTES\n" \ - "ntName: CASE_INSENSITIVE\n" \ - "\n", - "dn: @INDEXLIST\n" \ - "@IDXATTR: gidNumber\n" \ - "@IDXATTR: ntName\n" \ - "@IDXATTR: member\n" }; - const char *db_path, *tdb_path; - int ret; - int flags = 0; - - if (ldb != NULL) { - return True; - } - - /* this is needed as Samba3 doesn't have this globally yet */ - ldb_global_init(); - - db_path = lock_path("group_mapping.ldb"); - - ldb = ldb_init(NULL); - if (ldb == NULL) goto failed; - - existed = file_exist(db_path, NULL); - - if (lp_parm_bool(-1, "groupmap", "nosync", False)) { - flags |= LDB_FLG_NOSYNC; - } - - ret = ldb_connect(ldb, db_path, flags, NULL); - if (ret != LDB_SUCCESS) { - goto failed; - } - - if (!existed) { - /* initialise the ldb with an index */ - struct ldb_ldif *ldif; - int i; - for (i=0;i<ARRAY_SIZE(init_ldif);i++) { - ldif = ldb_ldif_read_string(ldb, &init_ldif[i]); - if (ldif == NULL) goto failed; - ret = ldb_add(ldb, ldif->msg); - talloc_free(ldif); - if (ret == -1) goto failed; - } - } - - /* possibly upgrade */ - tdb_path = lock_path("group_mapping.tdb"); - if (file_exist(tdb_path, NULL) && !mapping_upgrade(tdb_path)) { - unlink(lock_path("group_mapping.ldb")); - goto failed; - } - - return True; - -failed: - DEBUG(0,("Failed to open group mapping ldb '%s' - '%s'\n", - db_path, ldb?ldb_errstring(ldb):strerror(errno))); - talloc_free(ldb); - ldb = NULL; - return False; -} - - -/* - form the DN for a mapping entry from a SID - */ -static struct ldb_dn *mapping_dn(TALLOC_CTX *mem_ctx, const DOM_SID *sid) -{ - fstring string_sid; - uint32_t rid; - DOM_SID domsid; - - sid_copy(&domsid, sid); - if (!sid_split_rid(&domsid, &rid)) { - return NULL; - } - if (!sid_to_string(string_sid, &domsid)) { - return NULL; - } - /* we split by domain and rid so we can do a subtree search - when we only want one domain */ - return ldb_dn_string_compose(mem_ctx, NULL, "rid=%u,domain=%s", - rid, string_sid); -} - -/* - add a group mapping entry - */ - BOOL add_mapping_entry(GROUP_MAP *map, int flag) -{ - struct ldb_message *msg; - int ret, i; - fstring string_sid; - - if (!init_group_mapping()) { - return False; - } - - msg = ldb_msg_new(ldb); - if (msg == NULL) { - return False; - } - - msg->dn = mapping_dn(msg, &map->sid); - if (msg->dn == NULL) { - goto failed; - } - - if (ldb_msg_add_string(msg, "objectClass", "groupMap") != LDB_SUCCESS || - ldb_msg_add_string(msg, "sid", - sid_to_string(string_sid, &map->sid)) != LDB_SUCCESS || - ldb_msg_add_fmt(msg, "gidNumber", "%u", (unsigned)map->gid) != LDB_SUCCESS || - ldb_msg_add_fmt(msg, "sidNameUse", "%u", (unsigned)map->sid_name_use) != LDB_SUCCESS || - ldb_msg_add_string(msg, "comment", map->comment) != LDB_SUCCESS || - ldb_msg_add_string(msg, "ntName", map->nt_name) != LDB_SUCCESS) { - goto failed; - } - - ret = ldb_add(ldb, msg); - - /* if it exists we update it. This is a hangover from the semantics the - tdb backend had */ - if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) { - for (i=0;i<msg->num_elements;i++) { - msg->elements[i].flags = LDB_FLAG_MOD_REPLACE; - } - ret = ldb_modify(ldb, msg); - } - - talloc_free(msg); - - return ret == LDB_SUCCESS; - -failed: - talloc_free(msg); - return False; -} - -/* - unpack a ldb message into a GROUP_MAP structure -*/ -static BOOL msg_to_group_map(struct ldb_message *msg, GROUP_MAP *map) -{ - const char *sidstr; - - map->gid = ldb_msg_find_attr_as_int(msg, "gidNumber", -1); - map->sid_name_use = ldb_msg_find_attr_as_int(msg, "sidNameUse", -1); - fstrcpy(map->nt_name, ldb_msg_find_attr_as_string(msg, "ntName", NULL)); - fstrcpy(map->comment, ldb_msg_find_attr_as_string(msg, "comment", NULL)); - sidstr = ldb_msg_find_attr_as_string(msg, "sid", NULL); - - if (!string_to_sid(&map->sid, sidstr) || - map->gid == (gid_t)-1 || - map->sid_name_use == (enum lsa_SidType)-1) { - DEBUG(0,("Unable to unpack group mapping\n")); - return False; - } - - return True; -} - -/* - return a group map entry for a given sid -*/ - BOOL get_group_map_from_sid(DOM_SID sid, GROUP_MAP *map) -{ - int ret; - struct ldb_dn *dn; - struct ldb_result *res=NULL; - - if (!init_group_mapping()) { - return False; - } - - dn = mapping_dn(ldb, &sid); - if (dn == NULL) goto failed; - - ret = ldb_search(ldb, dn, LDB_SCOPE_BASE, NULL, NULL, &res); - talloc_steal(dn, res); - if (ret != LDB_SUCCESS || res->count != 1) { - goto failed; - } - - if (!msg_to_group_map(res->msgs[0], map)) goto failed; - - talloc_free(dn); - return True; - -failed: - talloc_free(dn); - return False; -} - -/* - return a group map entry for a given gid -*/ - BOOL get_group_map_from_gid(gid_t gid, GROUP_MAP *map) -{ - int ret; - char *expr; - struct ldb_result *res=NULL; - - if (!init_group_mapping()) { - return False; - } - - expr = talloc_asprintf(ldb, "(&(gidNumber=%u)(objectClass=groupMap))", - (unsigned)gid); - if (expr == NULL) goto failed; - - ret = ldb_search(ldb, NULL, LDB_SCOPE_SUBTREE, expr, NULL, &res); - talloc_steal(expr, res); - if (ret != LDB_SUCCESS || res->count != 1) goto failed; - - if (!msg_to_group_map(res->msgs[0], map)) goto failed; - - talloc_free(expr); - return True; - -failed: - talloc_free(expr); - return False; -} - -/* - Return the sid and the type of the unix group. -*/ - BOOL get_group_map_from_ntname(const char *name, GROUP_MAP *map) -{ - int ret; - char *expr; - struct ldb_result *res=NULL; - - if (!init_group_mapping()) { - return False; - } - - expr = talloc_asprintf(ldb, "(&(ntName=%s)(objectClass=groupMap))", name); - if (expr == NULL) goto failed; - - ret = ldb_search(ldb, NULL, LDB_SCOPE_SUBTREE, expr, NULL, &res); - talloc_steal(expr, res); - if (ret != LDB_SUCCESS || res->count != 1) goto failed; - - if (!msg_to_group_map(res->msgs[0], map)) goto failed; - - talloc_free(expr); - return True; - -failed: - talloc_free(expr); - return False; -} - -/* - Remove a group mapping entry. -*/ - BOOL group_map_remove(const DOM_SID *sid) -{ - struct ldb_dn *dn; - int ret; - - if (!init_group_mapping()) { - return False; - } - - dn = mapping_dn(ldb, sid); - if (dn == NULL) { - return False; - } - ret = ldb_delete(ldb, dn); - talloc_free(dn); - - return ret == LDB_SUCCESS; -} - - -/* - Enumerate the group mappings for a domain -*/ - BOOL enum_group_mapping(const DOM_SID *domsid, enum lsa_SidType sid_name_use, - GROUP_MAP **pp_rmap, - size_t *p_num_entries, BOOL unix_only) -{ - int i, ret; - char *expr; - fstring name; - struct ldb_result *res; - struct ldb_dn *basedn=NULL; - TALLOC_CTX *tmp_ctx; - - if (!init_group_mapping()) { - return False; - } - - tmp_ctx = talloc_new(ldb); - if (tmp_ctx == NULL) goto failed; - - if (sid_name_use == SID_NAME_UNKNOWN) { - expr = talloc_asprintf(tmp_ctx, "(&(objectClass=groupMap))"); - } else { - expr = talloc_asprintf(tmp_ctx, "(&(sidNameUse=%u)(objectClass=groupMap))", - sid_name_use); - } - if (expr == NULL) goto failed; - - /* we do a subtree search on the domain */ - if (domsid != NULL) { - sid_to_string(name, domsid); - basedn = ldb_dn_string_compose(tmp_ctx, NULL, "domain=%s", name); - if (basedn == NULL) goto failed; - } - - ret = ldb_search(ldb, basedn, LDB_SCOPE_SUBTREE, expr, NULL, &res); - if (ret != LDB_SUCCESS) goto failed; - - (*pp_rmap) = NULL; - *p_num_entries = 0; - - for (i=0;i<res->count;i++) { - (*pp_rmap) = SMB_REALLOC_ARRAY((*pp_rmap), GROUP_MAP, - (*p_num_entries)+1); - if (!(*pp_rmap)) goto failed; - - if (!msg_to_group_map(res->msgs[i], &(*pp_rmap)[*p_num_entries])) { - goto failed; - } - - (*p_num_entries)++; - } - - talloc_free(tmp_ctx); - return True; - -failed: - talloc_free(tmp_ctx); - return False; -} - -/* - This operation happens on session setup, so it should better be fast. We - store a list of aliases a SID is member of hanging off MEMBEROF/SID. -*/ - NTSTATUS one_alias_membership(const DOM_SID *member, - DOM_SID **sids, size_t *num) -{ - const char *attrs[] = { - "sid", - NULL - }; - DOM_SID alias; - char *expr; - int ret, i; - struct ldb_result *res=NULL; - fstring string_sid; - NTSTATUS status = NT_STATUS_INTERNAL_DB_CORRUPTION; - - if (!init_group_mapping()) { - return NT_STATUS_ACCESS_DENIED; - } - - if (!sid_to_string(string_sid, member)) { - return NT_STATUS_INVALID_PARAMETER; - } - - expr = talloc_asprintf(ldb, "(&(member=%s)(objectClass=groupMap))", - string_sid); - if (expr == NULL) goto failed; - - ret = ldb_search(ldb, NULL, LDB_SCOPE_SUBTREE, expr, attrs, &res); - talloc_steal(expr, res); - if (ret != LDB_SUCCESS) { - goto failed; - } - - for (i=0;i<res->count;i++) { - struct ldb_message_element *el; - el = ldb_msg_find_element(res->msgs[i], "sid"); - if (el == NULL || el->num_values != 1) { - status = NT_STATUS_INTERNAL_DB_CORRUPTION; - goto failed; - } - string_to_sid(&alias, (char *)el->values[0].data); - if (!add_sid_to_array_unique(NULL, &alias, sids, num)) { - status = NT_STATUS_NO_MEMORY; - goto failed; - } - } - - talloc_free(expr); - return NT_STATUS_OK; - -failed: - talloc_free(expr); - return status; -} - -/* - add/remove a member field -*/ -static NTSTATUS modify_aliasmem(const DOM_SID *alias, const DOM_SID *member, - int operation) -{ - fstring string_sid; - int ret; - struct ldb_message msg; - struct ldb_message_element el; - struct ldb_val val; - TALLOC_CTX *tmp_ctx; - GROUP_MAP map; - - if (!init_group_mapping()) { - return NT_STATUS_ACCESS_DENIED; - } - - if (!get_group_map_from_sid(*alias, &map)) { - sid_to_string(string_sid, alias); - return NT_STATUS_NO_SUCH_ALIAS; - } - - if ((map.sid_name_use != SID_NAME_ALIAS) && - (map.sid_name_use != SID_NAME_WKN_GRP)) { - DEBUG(0,("sid_name_use=%d\n", map.sid_name_use)); - return NT_STATUS_NO_SUCH_ALIAS; - } - - tmp_ctx = talloc_new(NULL); - if (tmp_ctx == NULL) { - return NT_STATUS_NO_MEMORY; - } - - msg.dn = mapping_dn(tmp_ctx, alias); - if (msg.dn == NULL) { - return NT_STATUS_NO_MEMORY; - } - msg.num_elements = 1; - msg.elements = ⪙ - el.flags = operation; - el.name = talloc_strdup(tmp_ctx, "member"); - el.num_values = 1; - el.values = &val; - sid_to_string(string_sid, member); - val.data = (uint8_t *)string_sid; - val.length = strlen(string_sid); - - ret = ldb_modify(ldb, &msg); - talloc_free(tmp_ctx); - - if (ret == LDB_ERR_NO_SUCH_OBJECT) { - return NT_STATUS_NO_SUCH_ALIAS; - } - - if (operation == LDB_FLAG_MOD_ADD && - ret == LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS) { - return NT_STATUS_MEMBER_IN_ALIAS; - } - - return (ret == LDB_SUCCESS ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED); -} - - NTSTATUS add_aliasmem(const DOM_SID *alias, const DOM_SID *member) -{ - return modify_aliasmem(alias, member, LDB_FLAG_MOD_ADD); -} - - NTSTATUS del_aliasmem(const DOM_SID *alias, const DOM_SID *member) -{ - return modify_aliasmem(alias, member, LDB_FLAG_MOD_DELETE); -} - - -/* - enumerate sids that have the given alias set in member -*/ - NTSTATUS enum_aliasmem(const DOM_SID *alias, DOM_SID **sids, size_t *num) -{ - const char *attrs[] = { - "member", - NULL - }; - int ret, i; - struct ldb_result *res=NULL; - struct ldb_dn *dn; - struct ldb_message_element *el; - - if (!init_group_mapping()) { - return NT_STATUS_ACCESS_DENIED; - } - - *sids = NULL; - *num = 0; - - dn = mapping_dn(ldb, alias); - if (dn == NULL) { - return NT_STATUS_NO_MEMORY; - } - - ret = ldb_search(ldb, dn, LDB_SCOPE_BASE, NULL, attrs, &res); - talloc_steal(dn, res); - if (ret == LDB_SUCCESS && res->count == 0) { - talloc_free(dn); - return NT_STATUS_OK; - } - if (ret != LDB_SUCCESS) { - talloc_free(dn); - return NT_STATUS_INTERNAL_DB_CORRUPTION; - } - - el = ldb_msg_find_element(res->msgs[0], "member"); - if (el == NULL) { - talloc_free(dn); - return NT_STATUS_INTERNAL_DB_CORRUPTION; - } - - for (i=0;i<el->num_values;i++) { - DOM_SID sid; - string_to_sid(&sid, (const char *)el->values[i].data); - if (!add_sid_to_array_unique(NULL, &sid, sids, num)) { - talloc_free(dn); - return NT_STATUS_NO_MEMORY; - } - } - talloc_free(dn); - - return NT_STATUS_OK; -} - -/* - upgrade one group mapping record from the old tdb format -*/ -static int upgrade_map_record(TDB_CONTEXT *tdb_ctx, TDB_DATA key, - TDB_DATA data, void *state) -{ - int ret; - GROUP_MAP map; - - if (strncmp(key.dptr, GROUP_PREFIX, - MIN(key.dsize, strlen(GROUP_PREFIX))) != 0) { - return 0; - } - - if (!string_to_sid(&map.sid, strlen(GROUP_PREFIX) + (const char *)key.dptr)) { - DEBUG(0,("Bad sid key '%s' during upgrade\n", (const char *)key.dptr)); - *(int *)state = -1; - return -1; - } - - ret = tdb_unpack(data.dptr, data.dsize, "ddff", - &map.gid, &map.sid_name_use, &map.nt_name, &map.comment); - if (ret == -1) { - DEBUG(0,("Failed to unpack group map record during upgrade\n")); - *(int *)state = -1; - return -1; - } - - if (!add_mapping_entry(&map, 0)) { - DEBUG(0,("Failed to add mapping entry during upgrade\n")); - *(int *)state = -1; - return -1; - } - - return 0; -} - -/* - upgrade one alias record from the old tdb format -*/ -static int upgrade_alias_record(TDB_CONTEXT *tdb_ctx, TDB_DATA key, - TDB_DATA data, void *state) -{ - const char *p = data.dptr; - fstring string_sid; - DOM_SID member; - - if (strncmp(key.dptr, MEMBEROF_PREFIX, - MIN(key.dsize, strlen(MEMBEROF_PREFIX))) != 0) { - return 0; - } - - if (!string_to_sid(&member, strlen(MEMBEROF_PREFIX) + (const char *)key.dptr)) { - DEBUG(0,("Bad alias key %s during upgrade\n", - (const char *)key.dptr)); - *(int *)state = -1; - } - - while (next_token(&p, string_sid, " ", sizeof(string_sid))) { - DOM_SID alias; - NTSTATUS status; - string_to_sid(&alias, string_sid); - status = add_aliasmem(&alias, &member); - if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_ALIAS)) { - DEBUG(0,("Ignoring orphaned alias record '%s'\n", - string_sid)); - } else if (!NT_STATUS_IS_OK(status)) { - DEBUG(0,("Failed to add alias member during upgrade - %s\n", - nt_errstr(status))); - *(int *)state = -1; - return -1; - } - } - - return 0; -} - -/* - upgrade from a old style tdb -*/ -static BOOL mapping_upgrade(const char *tdb_path) -{ - static TDB_CONTEXT *tdb; - int ret, status=0; - pstring old_path; - pstring new_path; - - tdb = tdb_open_log(tdb_path, 0, TDB_DEFAULT, O_RDWR, 0600); - if (tdb == NULL) goto failed; - - /* we have to do the map records first, as alias records may - reference them */ - ret = tdb_traverse(tdb, upgrade_map_record, &status); - if (ret == -1 || status == -1) goto failed; - - ret = tdb_traverse(tdb, upgrade_alias_record, &status); - if (ret == -1 || status == -1) goto failed; - - if (tdb) { - tdb_close(tdb); - tdb = NULL; - } - - pstrcpy(old_path, tdb_path); - pstrcpy(new_path, lock_path("group_mapping.tdb.upgraded")); - - if (rename(old_path, new_path) != 0) { - DEBUG(0,("Failed to rename old group mapping database\n")); - goto failed; - } - return True; - -failed: - DEBUG(0,("Failed to upgrade group mapping database\n")); - if (tdb) tdb_close(tdb); - return False; -} |