From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- source3/groupdb/mapping.c | 893 ++++++++++++++++++++++++++++++++ source3/groupdb/mapping.h | 56 ++ source3/groupdb/mapping_tdb.c | 1135 +++++++++++++++++++++++++++++++++++++++++ source3/groupdb/mapping_tdb.h | 30 ++ 4 files changed, 2114 insertions(+) create mode 100644 source3/groupdb/mapping.c create mode 100644 source3/groupdb/mapping.h create mode 100644 source3/groupdb/mapping_tdb.c create mode 100644 source3/groupdb/mapping_tdb.h (limited to 'source3/groupdb') diff --git a/source3/groupdb/mapping.c b/source3/groupdb/mapping.c new file mode 100644 index 0000000..cb6a611 --- /dev/null +++ b/source3/groupdb/mapping.c @@ -0,0 +1,893 @@ +/* + * Unix SMB/CIFS implementation. + * RPC Pipe client / server routines + * Copyright (C) Andrew Tridgell 1992-2000, + * Copyright (C) Jean François Micouleau 1998-2001. + * Copyright (C) Volker Lendecke 2006. + * Copyright (C) Gerald Carter 2006. + * + * 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 3 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, see . + */ + +#include "includes.h" +#include "system/passwd.h" +#include "passdb.h" +#include "groupdb/mapping.h" +#include "../libcli/security/security.h" +#include "lib/winbind_util.h" +#include +#include "groupdb/mapping_tdb.h" +#include "lib/util/smb_strtox.h" + +static const struct mapping_backend *backend; + +/* + initialise a group mapping backend + */ +static bool init_group_mapping(void) +{ + if (backend != NULL) { + /* already initialised */ + return True; + } + + backend = groupdb_tdb_init(); + + return backend != NULL; +} + +/**************************************************************************** +initialise first time the mapping list +****************************************************************************/ +NTSTATUS add_initial_entry(gid_t gid, const char *sid, enum lsa_SidType sid_name_use, const char *nt_name, const char *comment) +{ + NTSTATUS status; + GROUP_MAP *map; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + + map = talloc_zero(NULL, GROUP_MAP); + if (!map) { + return NT_STATUS_NO_MEMORY; + } + + map->gid=gid; + if (!string_to_sid(&map->sid, sid)) { + DEBUG(0, ("string_to_sid failed: %s\n", sid)); + status = NT_STATUS_UNSUCCESSFUL; + goto done; + } + + map->sid_name_use=sid_name_use; + map->nt_name = talloc_strdup(map, nt_name); + if (!map->nt_name) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + + if (comment) { + map->comment = talloc_strdup(map, comment); + } else { + map->comment = talloc_strdup(map, ""); + } + if (!map->comment) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + + status = pdb_add_group_mapping_entry(map); + +done: + TALLOC_FREE(map); + return status; +} + +static NTSTATUS alias_memberships(const struct dom_sid *members, size_t num_members, + struct dom_sid **sids, size_t *num) +{ + size_t i; + + *num = 0; + *sids = NULL; + + for (i=0; ione_alias_membership(&members[i], sids, num); + if (!NT_STATUS_IS_OK(status)) + return status; + } + return NT_STATUS_OK; +} + +struct aliasmem_closure { + const struct dom_sid *alias; + struct dom_sid **sids; + size_t *num; +}; + + + +/* + * + * High level functions + * better to use them than the lower ones. + * + * we are checking if the group is in the mapping file + * and if the group is an existing unix group + * + */ + +/* get a domain group from it's SID */ + +bool get_domain_group_from_sid(struct dom_sid sid, GROUP_MAP *map) +{ + struct group *grp; + bool ret; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + DEBUG(10, ("get_domain_group_from_sid\n")); + + /* if the group is NOT in the database, it CAN NOT be a domain group */ + + become_root(); + ret = pdb_getgrsid(map, sid); + unbecome_root(); + + /* special case check for rid 513 */ + + if ( !ret ) { + uint32_t rid; + + sid_peek_rid( &sid, &rid ); + + if ( rid == DOMAIN_RID_USERS ) { + map->nt_name = talloc_strdup(map, "None"); + if (!map->nt_name) { + return false; + } + map->comment = talloc_strdup(map, "Ordinary Users"); + if (!map->comment) { + return false; + } + sid_copy( &map->sid, &sid ); + map->sid_name_use = SID_NAME_DOM_GRP; + map->gid = (gid_t)-1; + return True; + } + return False; + } + + DEBUG(10, ("get_domain_group_from_sid: SID found in passdb\n")); + + /* if it's not a domain group, continue */ + if (map->sid_name_use!=SID_NAME_DOM_GRP) { + return False; + } + + DEBUG(10, ("get_domain_group_from_sid: SID is a domain group\n")); + + if (map->gid==-1) { + return False; + } + + DEBUG(10, ("get_domain_group_from_sid: SID is mapped to gid:%lu\n",(unsigned long)map->gid)); + + grp = getgrgid(map->gid); + if ( !grp ) { + DEBUG(10, ("get_domain_group_from_sid: gid DOESN'T exist in UNIX security\n")); + return False; + } + + DEBUG(10, ("get_domain_group_from_sid: gid exists in UNIX security\n")); + + return True; +} + +/**************************************************************************** + Create a UNIX group on demand. +****************************************************************************/ + +int smb_create_group(const char *unix_group, gid_t *new_gid) +{ + const struct loadparm_substitution *lp_sub = + loadparm_s3_global_substitution(); + char *add_script = NULL; + int ret = -1; + int fd = 0; + int error = 0; + + *new_gid = 0; + + /* defer to scripts */ + + if ( *lp_add_group_script(talloc_tos(), lp_sub) ) { + TALLOC_CTX *ctx = talloc_tos(); + + add_script = talloc_strdup(ctx, + lp_add_group_script(ctx, lp_sub)); + if (!add_script) { + return -1; + } + add_script = talloc_string_sub(ctx, + add_script, "%g", unix_group); + if (!add_script) { + return -1; + } + + ret = smbrun(add_script, &fd, NULL); + DEBUG(ret ? 0 : 3,("smb_create_group: Running the command `%s' gave %d\n",add_script,ret)); + if (ret == 0) { + smb_nscd_flush_group_cache(); + } + if (ret != 0) + return ret; + + if (fd != 0) { + fstring output; + ssize_t nread; + + *new_gid = 0; + + nread = read(fd, output, sizeof(output)-1); + if (nread > 0) { + output[nread] = '\0'; + *new_gid = (gid_t)smb_strtoul(output, + NULL, + 10, + &error, + SMB_STR_STANDARD); + if (error != 0) { + *new_gid = 0; + close(fd); + return -1; + } + } + + close(fd); + } + + } + + if (*new_gid == 0) { + struct group *grp = getgrnam(unix_group); + + if (grp != NULL) + *new_gid = grp->gr_gid; + } + + return ret; +} + +/**************************************************************************** + Delete a UNIX group on demand. +****************************************************************************/ + +int smb_delete_group(const char *unix_group) +{ + const struct loadparm_substitution *lp_sub = + loadparm_s3_global_substitution(); + char *del_script = NULL; + int ret = -1; + + /* defer to scripts */ + + if ( *lp_delete_group_script(talloc_tos(), lp_sub) ) { + TALLOC_CTX *ctx = talloc_tos(); + + del_script = talloc_strdup(ctx, + lp_delete_group_script(ctx, lp_sub)); + if (!del_script) { + return -1; + } + del_script = talloc_string_sub(ctx, + del_script, "%g", unix_group); + if (!del_script) { + return -1; + } + ret = smbrun(del_script, NULL, NULL); + DEBUG(ret ? 0 : 3,("smb_delete_group: Running the command `%s' gave %d\n",del_script,ret)); + if (ret == 0) { + smb_nscd_flush_group_cache(); + } + return ret; + } + + return -1; +} + +/**************************************************************************** + Set a user's primary UNIX group. +****************************************************************************/ + +int smb_set_primary_group(const char *unix_group, const char* unix_user) +{ + const struct loadparm_substitution *lp_sub = + loadparm_s3_global_substitution(); + char *add_script = NULL; + int ret = -1; + + /* defer to scripts */ + + if ( *lp_set_primary_group_script(talloc_tos(), lp_sub) ) { + TALLOC_CTX *ctx = talloc_tos(); + + add_script = talloc_strdup(ctx, + lp_set_primary_group_script(ctx, lp_sub)); + if (!add_script) { + return -1; + } + add_script = talloc_all_string_sub(ctx, + add_script, "%g", unix_group); + if (!add_script) { + return -1; + } + add_script = talloc_string_sub(ctx, + add_script, "%u", unix_user); + if (!add_script) { + return -1; + } + ret = smbrun(add_script, NULL, NULL); + flush_pwnam_cache(); + DEBUG(ret ? 0 : 3,("smb_set_primary_group: " + "Running the command `%s' gave %d\n",add_script,ret)); + if (ret == 0) { + smb_nscd_flush_group_cache(); + } + return ret; + } + + return -1; +} + +/**************************************************************************** + Add a user to a UNIX group. +****************************************************************************/ + +int smb_add_user_group(const char *unix_group, const char *unix_user) +{ + const struct loadparm_substitution *lp_sub = + loadparm_s3_global_substitution(); + char *add_script = NULL; + int ret = -1; + + /* defer to scripts */ + + if ( *lp_add_user_to_group_script(talloc_tos(), lp_sub) ) { + TALLOC_CTX *ctx = talloc_tos(); + + add_script = talloc_strdup(ctx, + lp_add_user_to_group_script(ctx, lp_sub)); + if (!add_script) { + return -1; + } + add_script = talloc_string_sub(ctx, + add_script, "%g", unix_group); + if (!add_script) { + return -1; + } + add_script = talloc_string_sub2(ctx, + add_script, "%u", unix_user, true, false, true); + if (!add_script) { + return -1; + } + ret = smbrun(add_script, NULL, NULL); + DEBUG(ret ? 0 : 3,("smb_add_user_group: Running the command `%s' gave %d\n",add_script,ret)); + if (ret == 0) { + smb_nscd_flush_group_cache(); + } + return ret; + } + + return -1; +} + +/**************************************************************************** + Delete a user from a UNIX group +****************************************************************************/ + +int smb_delete_user_group(const char *unix_group, const char *unix_user) +{ + const struct loadparm_substitution *lp_sub = + loadparm_s3_global_substitution(); + char *del_script = NULL; + int ret = -1; + + /* defer to scripts */ + + if ( *lp_delete_user_from_group_script(talloc_tos(), lp_sub) ) { + TALLOC_CTX *ctx = talloc_tos(); + + del_script = talloc_strdup(ctx, + lp_delete_user_from_group_script(ctx, lp_sub)); + if (!del_script) { + return -1; + } + del_script = talloc_string_sub(ctx, + del_script, "%g", unix_group); + if (!del_script) { + return -1; + } + del_script = talloc_string_sub2(ctx, + del_script, "%u", unix_user, true, false, true); + if (!del_script) { + return -1; + } + ret = smbrun(del_script, NULL, NULL); + DEBUG(ret ? 0 : 3,("smb_delete_user_group: Running the command `%s' gave %d\n",del_script,ret)); + if (ret == 0) { + smb_nscd_flush_group_cache(); + } + return ret; + } + + return -1; +} + + +NTSTATUS pdb_default_getgrsid(struct pdb_methods *methods, GROUP_MAP *map, + struct dom_sid sid) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->get_group_map_from_sid(sid, map) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_getgrgid(struct pdb_methods *methods, GROUP_MAP *map, + gid_t gid) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->get_group_map_from_gid(gid, map) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_getgrnam(struct pdb_methods *methods, GROUP_MAP *map, + const char *name) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->get_group_map_from_ntname(name, map) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_add_group_mapping_entry(struct pdb_methods *methods, + GROUP_MAP *map) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->add_mapping_entry(map, TDB_INSERT) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_update_group_mapping_entry(struct pdb_methods *methods, + GROUP_MAP *map) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->add_mapping_entry(map, TDB_REPLACE) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_delete_group_mapping_entry(struct pdb_methods *methods, + struct dom_sid sid) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->group_map_remove(&sid) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_enum_group_mapping(struct pdb_methods *methods, + const struct dom_sid *sid, + enum lsa_SidType sid_name_use, + GROUP_MAP ***pp_rmap, + size_t *p_num_entries, + bool unix_only) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->enum_group_mapping(sid, sid_name_use, pp_rmap, p_num_entries, unix_only) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_create_alias(struct pdb_methods *methods, + const char *name, uint32_t *rid) +{ + struct dom_sid sid; + enum lsa_SidType type; + uint32_t new_rid; + gid_t gid; + bool exists; + GROUP_MAP *map; + TALLOC_CTX *mem_ctx; + NTSTATUS status; + + DEBUG(10, ("Trying to create alias %s\n", name)); + + mem_ctx = talloc_new(NULL); + if (mem_ctx == NULL) { + return NT_STATUS_NO_MEMORY; + } + + exists = lookup_name(mem_ctx, name, LOOKUP_NAME_LOCAL, + NULL, NULL, &sid, &type); + + if (exists) { + status = NT_STATUS_ALIAS_EXISTS; + goto done; + } + + if (!pdb_new_rid(&new_rid)) { + DEBUG(0, ("Could not allocate a RID.\n")); + status = NT_STATUS_ACCESS_DENIED; + goto done; + } + + sid_compose(&sid, get_global_sam_sid(), new_rid); + + if (!winbind_allocate_gid(&gid)) { + DEBUG(3, ("Could not get a gid out of winbind - " + "wasted a rid :-(\n")); + status = NT_STATUS_ACCESS_DENIED; + goto done; + } + + DEBUG(10, ("Creating alias %s with gid %u and rid %u\n", + name, (unsigned int)gid, (unsigned int)new_rid)); + + map = talloc_zero(mem_ctx, GROUP_MAP); + if (!map) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + + map->gid = gid; + sid_copy(&map->sid, &sid); + map->sid_name_use = SID_NAME_ALIAS; + map->nt_name = talloc_strdup(map, name); + if (!map->nt_name) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + map->comment = talloc_strdup(map, ""); + if (!map->comment) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + + status = pdb_add_group_mapping_entry(map); + + if (!NT_STATUS_IS_OK(status)) { + DEBUG(0, ("Could not add group mapping entry for alias %s " + "(%s)\n", name, nt_errstr(status))); + goto done; + } + + *rid = new_rid; + +done: + TALLOC_FREE(mem_ctx); + return status; +} + +NTSTATUS pdb_default_delete_alias(struct pdb_methods *methods, + const struct dom_sid *sid) +{ + return pdb_delete_group_mapping_entry(*sid); +} + +NTSTATUS pdb_default_get_aliasinfo(struct pdb_methods *methods, + const struct dom_sid *sid, + struct acct_info *info) +{ + NTSTATUS status = NT_STATUS_OK; + GROUP_MAP *map; + + map = talloc_zero(NULL, GROUP_MAP); + if (!map) { + return NT_STATUS_NO_MEMORY; + } + + if (!pdb_getgrsid(map, *sid)) { + status = NT_STATUS_NO_SUCH_ALIAS; + goto done; + } + + if ((map->sid_name_use != SID_NAME_ALIAS) && + (map->sid_name_use != SID_NAME_WKN_GRP)) { + struct dom_sid_buf buf; + DEBUG(2, ("%s is a %s, expected an alias\n", + dom_sid_str_buf(sid, &buf), + sid_type_lookup(map->sid_name_use))); + status = NT_STATUS_NO_SUCH_ALIAS; + goto done; + } + + info->acct_name = talloc_move(info, &map->nt_name); + if (!info->acct_name) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + info->acct_desc = talloc_move(info, &map->comment); + if (!info->acct_desc) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + sid_peek_rid(&map->sid, &info->rid); + +done: + TALLOC_FREE(map); + return status; +} + +NTSTATUS pdb_default_set_aliasinfo(struct pdb_methods *methods, + const struct dom_sid *sid, + struct acct_info *info) +{ + NTSTATUS status; + GROUP_MAP *map; + + map = talloc_zero(NULL, GROUP_MAP); + if (!map) { + return NT_STATUS_NO_MEMORY; + } + + if (!pdb_getgrsid(map, *sid)) { + status = NT_STATUS_NO_SUCH_ALIAS; + goto done; + } + + map->nt_name = talloc_strdup(map, info->acct_name); + if (!map->nt_name) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + map->comment = talloc_strdup(map, info->acct_desc); + if (!map->comment) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + + status = pdb_update_group_mapping_entry(map); + +done: + TALLOC_FREE(map); + return status; +} + +NTSTATUS pdb_default_add_aliasmem(struct pdb_methods *methods, + const struct dom_sid *alias, const struct dom_sid *member) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->add_aliasmem(alias, member); +} + +NTSTATUS pdb_default_del_aliasmem(struct pdb_methods *methods, + const struct dom_sid *alias, const struct dom_sid *member) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->del_aliasmem(alias, member); +} + +NTSTATUS pdb_default_enum_aliasmem(struct pdb_methods *methods, + const struct dom_sid *alias, TALLOC_CTX *mem_ctx, + struct dom_sid **pp_members, size_t *p_num_members) +{ + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + return backend->enum_aliasmem(alias, mem_ctx, pp_members, + p_num_members); +} + +NTSTATUS pdb_default_alias_memberships(struct pdb_methods *methods, + TALLOC_CTX *mem_ctx, + const struct dom_sid *domain_sid, + const struct dom_sid *members, + size_t num_members, + uint32_t **pp_alias_rids, + size_t *p_num_alias_rids) +{ + struct dom_sid *alias_sids; + size_t i, num_alias_sids; + NTSTATUS result; + + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_UNSUCCESSFUL; + } + + alias_sids = NULL; + num_alias_sids = 0; + + result = alias_memberships(members, num_members, + &alias_sids, &num_alias_sids); + + if (!NT_STATUS_IS_OK(result)) + return result; + + *p_num_alias_rids = 0; + + if (num_alias_sids == 0) { + TALLOC_FREE(alias_sids); + return NT_STATUS_OK; + } + + *pp_alias_rids = talloc_array(mem_ctx, uint32_t, num_alias_sids); + if (*pp_alias_rids == NULL) + return NT_STATUS_NO_MEMORY; + + for (i=0; igid = gidformap; + sid_copy(&map->sid, &sid); + map->sid_name_use = SID_NAME_ALIAS; + map->nt_name = talloc_strdup(map, name); + if (!map->nt_name) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + map->comment = talloc_strdup(map, ""); + if (!map->comment) { + status = NT_STATUS_NO_MEMORY; + goto done; + } + + status = pdb_add_group_mapping_entry(map); + + if (!NT_STATUS_IS_OK(status)) { + DEBUG(0, ("pdb_create_builtin_alias: Could not add group mapping entry for alias %d " + "(%s)\n", rid, nt_errstr(status))); + } + +done: + TALLOC_FREE(map); + return status; +} + + diff --git a/source3/groupdb/mapping.h b/source3/groupdb/mapping.h new file mode 100644 index 0000000..bb6cc02 --- /dev/null +++ b/source3/groupdb/mapping.h @@ -0,0 +1,56 @@ +/* + * Unix SMB/CIFS implementation. + * RPC Pipe client / server routines + * Copyright (C) Andrew Tridgell 1992-2000, + * Copyright (C) Jean François Micouleau 1998-2001. + * Copyright (C) Volker Lendecke 2006. + * Copyright (C) Gerald Carter 2006. + * + * 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 3 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, see . + */ + +#define DATABASE_VERSION_V1 1 /* native byte format. */ +#define DATABASE_VERSION_V2 2 /* le format. */ + +#define GROUP_PREFIX "UNIXGROUP/" +#define GROUP_PREFIX_LEN 10 + +/* Alias memberships are stored reverse, as memberships. The performance + * critical operation is to determine the aliases a SID is member of, not + * listing alias members. So we store a list of alias SIDs a SID is member of + * hanging of the member as key. + */ +#define MEMBEROF_PREFIX "MEMBEROF/" +#define MEMBEROF_PREFIX_LEN 9 + +/* + groupdb mapping backend abstraction + */ +struct mapping_backend { + bool (*init_group_mapping)(void); + bool (*add_mapping_entry)(GROUP_MAP *map, int flag); + bool (*get_group_map_from_sid)(struct dom_sid sid, GROUP_MAP *map); + bool (*get_group_map_from_gid)(gid_t gid, GROUP_MAP *map); + bool (*get_group_map_from_ntname)(const char *name, GROUP_MAP *map); + bool (*group_map_remove)(const struct dom_sid *sid); + bool (*enum_group_mapping)(const struct dom_sid *domsid, enum lsa_SidType sid_name_use, + GROUP_MAP ***pp_rmap, + size_t *p_num_entries, bool unix_only); + NTSTATUS (*one_alias_membership)(const struct dom_sid *member, + struct dom_sid **sids, size_t *num); + NTSTATUS (*add_aliasmem)(const struct dom_sid *alias, const struct dom_sid *member); + NTSTATUS (*del_aliasmem)(const struct dom_sid *alias, const struct dom_sid *member); + NTSTATUS (*enum_aliasmem)(const struct dom_sid *alias, TALLOC_CTX *mem_ctx, + struct dom_sid **sids, size_t *num); +}; diff --git a/source3/groupdb/mapping_tdb.c b/source3/groupdb/mapping_tdb.c new file mode 100644 index 0000000..a39b03d --- /dev/null +++ b/source3/groupdb/mapping_tdb.c @@ -0,0 +1,1135 @@ +/* + * Unix SMB/CIFS implementation. + * RPC Pipe client / server routines + * Copyright (C) Andrew Tridgell 1992-2006, + * Copyright (C) Jean François Micouleau 1998-2001. + * Copyright (C) Volker Lendecke 2006. + * Copyright (C) Gerald Carter 2006. + * + * 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 3 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, see . + */ + +#include "includes.h" +#include "system/filesys.h" +#include "passdb.h" +#include "groupdb/mapping.h" +#include "dbwrap/dbwrap.h" +#include "dbwrap/dbwrap_open.h" +#include "util_tdb.h" +#include "../libcli/security/security.h" +#include "groupdb/mapping_tdb.h" +#include "lib/util/smb_strtox.h" + +static struct db_context *db; /* used for driver files */ + +static bool enum_group_mapping(const struct dom_sid *domsid, + enum lsa_SidType sid_name_use, + GROUP_MAP ***pp_rmap, + size_t *p_num_entries, + bool unix_only); +static bool group_map_remove(const struct dom_sid *sid); + +static bool mapping_switch(const char *ldb_path); + +/**************************************************************************** + Open the group mapping tdb. +****************************************************************************/ +static bool init_group_mapping(void) +{ + char *tdb_path; + char *ldb_path; + + if (db != NULL) { + return true; + } + + tdb_path = state_path(talloc_tos(), "group_mapping.tdb"); + if (tdb_path == NULL) { + return false; + } + db = db_open(NULL, tdb_path, 0, + TDB_DEFAULT, O_RDWR|O_CREAT, 0600, + DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE); + if (db == NULL) { + DEBUG(0, ("Failed to open group mapping database: %s\n", + strerror(errno))); + talloc_free(tdb_path); + return false; + } + + ldb_path = state_path(talloc_tos(), "group_mapping.ldb"); + if (ldb_path == NULL) { + talloc_free(tdb_path); + return false; + } + if (file_exist(ldb_path) && !mapping_switch(ldb_path)) { + unlink(tdb_path); + talloc_free(tdb_path); + talloc_free(ldb_path); + return false; + + } else { + /* handle upgrade from old versions of the database */ +#if 0 /* -- Needs conversion to dbwrap -- */ + const char *vstring = "INFO/version"; + int32 vers_id; + GROUP_MAP *map_table = NULL; + size_t num_entries = 0; + + /* handle a Samba upgrade */ + tdb_lock_bystring(tdb, vstring); + + /* Cope with byte-reversed older versions of the db. */ + vers_id = tdb_fetch_int32(tdb, vstring); + if ((vers_id == DATABASE_VERSION_V1) + || (IREV(vers_id) == DATABASE_VERSION_V1)) { + /* + * Written on a bigendian machine with old fetch_int + * code. Save as le. + */ + tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2); + vers_id = DATABASE_VERSION_V2; + } + + /* if its an unknown version we remove everything in the db */ + + if (vers_id != DATABASE_VERSION_V2) { + tdb_wipe_all(tdb); + tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2); + } + + tdb_unlock_bystring(tdb, vstring); + + /* cleanup any map entries with a gid == -1 */ + + if ( enum_group_mapping( NULL, SID_NAME_UNKNOWN, &map_table, + &num_entries, False ) ) { + int i; + + for ( i=0; isid); + if (key == NULL) { + return false; + } + + len = tdb_pack(NULL, 0, "ddff", + map->gid, map->sid_name_use, map->nt_name, map->comment); + + buf = talloc_array(key, char, len); + if (!buf) { + TALLOC_FREE(key); + return false; + } + len = tdb_pack((uint8_t *)buf, len, "ddff", map->gid, + map->sid_name_use, map->nt_name, map->comment); + + status = dbwrap_trans_store( + db, string_term_tdb_data(key), + make_tdb_data((uint8_t *)buf, len), TDB_REPLACE); + + TALLOC_FREE(key); + + return NT_STATUS_IS_OK(status); +} + + +/**************************************************************************** + Return the sid and the type of the unix group. +****************************************************************************/ + +static bool get_group_map_from_sid(struct dom_sid sid, GROUP_MAP *map) +{ + TDB_DATA dbuf; + char *key; + int ret = 0; + NTSTATUS status; + fstring nt_name; + fstring comment; + + /* the key is the SID, retrieving is direct */ + + key = group_mapping_key(talloc_tos(), &sid); + if (key == NULL) { + return false; + } + + status = dbwrap_fetch_bystring(db, key, key, &dbuf); + if (!NT_STATUS_IS_OK(status)) { + TALLOC_FREE(key); + return false; + } + + ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff", + &map->gid, &map->sid_name_use, + &nt_name, &comment); + + TALLOC_FREE(key); + + if ( ret == -1 ) { + DEBUG(3,("get_group_map_from_sid: tdb_unpack failure\n")); + return false; + } + + sid_copy(&map->sid, &sid); + + map->nt_name = talloc_strdup(map, nt_name); + if (!map->nt_name) { + return false; + } + map->comment = talloc_strdup(map, comment); + if (!map->comment) { + return false; + } + + return true; +} + +static bool dbrec2map(const struct db_record *rec, GROUP_MAP *map) +{ + TDB_DATA key = dbwrap_record_get_key(rec); + TDB_DATA value = dbwrap_record_get_value(rec); + int ret = 0; + fstring nt_name; + fstring comment; + + if ((key.dsize < strlen(GROUP_PREFIX)) + || (strncmp((char *)key.dptr, GROUP_PREFIX, + GROUP_PREFIX_LEN) != 0)) { + return False; + } + + if (!string_to_sid(&map->sid, (const char *)key.dptr + + GROUP_PREFIX_LEN)) { + return False; + } + + ret = tdb_unpack(value.dptr, value.dsize, "ddff", + &map->gid, &map->sid_name_use, + &nt_name, &comment); + + if (ret == -1) { + DEBUG(3, ("dbrec2map: tdb_unpack failure\n")); + return false; + } + + map->nt_name = talloc_strdup(map, nt_name); + if (!map->nt_name) { + return false; + } + map->comment = talloc_strdup(map, comment); + if (!map->comment) { + return false; + } + + return true; +} + +struct find_map_state { + bool found; + const char *name; /* If != NULL, look for name */ + gid_t gid; /* valid iff name == NULL */ + GROUP_MAP *map; +}; + +static int find_map(struct db_record *rec, void *private_data) +{ + struct find_map_state *state = (struct find_map_state *)private_data; + + if (!dbrec2map(rec, state->map)) { + DEBUG(10, ("failed to unpack map\n")); + return 0; + } + + if (state->name != NULL) { + if (strequal(state->name, state->map->nt_name)) { + state->found = true; + return 1; + } + } + else { + if (state->map->gid == state->gid) { + state->found = true; + return 1; + } + } + + return 0; +} + +/**************************************************************************** + Return the sid and the type of the unix group. +****************************************************************************/ + +static bool get_group_map_from_gid(gid_t gid, GROUP_MAP *map) +{ + struct find_map_state state; + + state.found = false; + state.name = NULL; /* Indicate we're looking for gid */ + state.gid = gid; + state.map = map; + + dbwrap_traverse_read(db, find_map, (void *)&state, NULL); + + return state.found; +} + +/**************************************************************************** + Return the sid and the type of the unix group. +****************************************************************************/ + +static bool get_group_map_from_ntname(const char *name, GROUP_MAP *map) +{ + struct find_map_state state; + + state.found = false; + state.name = name; + state.map = map; + + dbwrap_traverse_read(db, find_map, (void *)&state, NULL); + + return state.found; +} + +/**************************************************************************** + Remove a group mapping entry. +****************************************************************************/ + +static bool group_map_remove(const struct dom_sid *sid) +{ + char *key; + NTSTATUS status; + + key = group_mapping_key(talloc_tos(), sid); + if (key == NULL) { + return false; + } + + status = dbwrap_trans_delete(db, string_term_tdb_data(key)); + + TALLOC_FREE(key); + return NT_STATUS_IS_OK(status); +} + +/**************************************************************************** + Enumerate the group mapping. +****************************************************************************/ + +struct enum_map_state { + const struct dom_sid *domsid; + enum lsa_SidType sid_name_use; + bool unix_only; + + size_t num_maps; + GROUP_MAP **maps; +}; + +static int collect_map(struct db_record *rec, void *private_data) +{ + struct enum_map_state *state = (struct enum_map_state *)private_data; + GROUP_MAP *map; + GROUP_MAP **tmp; + + map = talloc_zero(NULL, GROUP_MAP); + if (!map) { + DEBUG(0, ("Unable to allocate group map!\n")); + return 1; + } + + if (!dbrec2map(rec, map)) { + TALLOC_FREE(map); + return 0; + } + /* list only the type or everything if UNKNOWN */ + if (state->sid_name_use != SID_NAME_UNKNOWN + && state->sid_name_use != map->sid_name_use) { + DEBUG(11,("enum_group_mapping: group %s is not of the " + "requested type\n", map->nt_name)); + TALLOC_FREE(map); + return 0; + } + + if ((state->unix_only == ENUM_ONLY_MAPPED) && (map->gid == -1)) { + DEBUG(11,("enum_group_mapping: group %s is non mapped\n", + map->nt_name)); + TALLOC_FREE(map); + return 0; + } + + if ((state->domsid != NULL) && + (dom_sid_compare_domain(state->domsid, &map->sid) != 0)) { + struct dom_sid_buf buf; + DEBUG(11,("enum_group_mapping: group %s is not in domain\n", + dom_sid_str_buf(&map->sid, &buf))); + TALLOC_FREE(map); + return 0; + } + + tmp = talloc_realloc(NULL, state->maps, GROUP_MAP *, + state->num_maps + 1); + if (!tmp) { + DEBUG(0,("enum_group_mapping: Unable to enlarge group " + "map!\n")); + TALLOC_FREE(map); + return 1; + } + + state->maps = tmp; + state->maps[state->num_maps] = talloc_move(state->maps, &map); + state->num_maps++; + return 0; +} + +static bool enum_group_mapping(const struct dom_sid *domsid, + enum lsa_SidType sid_name_use, + GROUP_MAP ***pp_rmap, + size_t *p_num_entries, bool unix_only) +{ + struct enum_map_state state; + NTSTATUS status; + + state.domsid = domsid; + state.sid_name_use = sid_name_use; + state.unix_only = unix_only; + state.num_maps = 0; + state.maps = NULL; + + status = dbwrap_traverse_read(db, collect_map, (void *)&state, NULL); + if (!NT_STATUS_IS_OK(status)) { + TALLOC_FREE(state.maps); + return false; + } + + *pp_rmap = state.maps; + *p_num_entries = state.num_maps; + + return true; +} + +/* 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. */ + +static NTSTATUS one_alias_membership(const struct dom_sid *member, + struct dom_sid **sids, size_t *num) +{ + struct dom_sid_buf tmp; + fstring key; + char *string_sid; + TDB_DATA dbuf; + const char *p; + NTSTATUS status; + TALLOC_CTX *frame = talloc_stackframe(); + + slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, + dom_sid_str_buf(member, &tmp)); + + status = dbwrap_fetch_bystring(db, frame, key, &dbuf); + if (!NT_STATUS_IS_OK(status)) { + TALLOC_FREE(frame); + return NT_STATUS_OK; + } + + p = (const char *)dbuf.dptr; + + while (next_token_talloc(frame, &p, &string_sid, " ")) { + struct dom_sid alias; + uint32_t num_sids; + + if (!string_to_sid(&alias, string_sid)) + continue; + + num_sids = *num; + status= add_sid_to_array_unique(NULL, &alias, sids, &num_sids); + if (!NT_STATUS_IS_OK(status)) { + goto done; + } + *num = num_sids; + } + +done: + TALLOC_FREE(frame); + return status; +} + +static NTSTATUS alias_memberships(const struct dom_sid *members, size_t num_members, + struct dom_sid **sids, size_t *num) +{ + size_t i; + + *num = 0; + *sids = NULL; + + for (i=0; isid_name_use != SID_NAME_ALIAS) && + (map->sid_name_use != SID_NAME_WKN_GRP)) { + TALLOC_FREE(map); + return NT_STATUS_NO_SUCH_ALIAS; + } + + TALLOC_FREE(map); + + if (is_aliasmem(alias, member)) + return NT_STATUS_MEMBER_IN_ALIAS; + + key = talloc_asprintf(talloc_tos(), "%s%s", MEMBEROF_PREFIX, + dom_sid_str_buf(member, &string_sid)); + if (key == NULL) { + return NT_STATUS_NO_MEMORY; + } + + if (dbwrap_transaction_start(db) != 0) { + DEBUG(0, ("transaction_start failed\n")); + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + + rec = dbwrap_fetch_locked(db, key, string_term_tdb_data(key)); + + if (rec == NULL) { + DEBUG(10, ("fetch_lock failed\n")); + TALLOC_FREE(key); + status = NT_STATUS_INTERNAL_DB_CORRUPTION; + goto cancel; + } + + value = dbwrap_record_get_value(rec); + + dom_sid_str_buf(alias, &string_sid); + + if (value.dptr != NULL) { + new_memberstring = talloc_asprintf( + key, "%s %s", (char *)(value.dptr), string_sid.buf); + } else { + new_memberstring = talloc_strdup(key, string_sid.buf); + } + + if (new_memberstring == NULL) { + TALLOC_FREE(key); + status = NT_STATUS_NO_MEMORY; + goto cancel; + } + + status = dbwrap_record_store(rec, string_term_tdb_data(new_memberstring), 0); + + TALLOC_FREE(key); + + if (!NT_STATUS_IS_OK(status)) { + DEBUG(10, ("Could not store record: %s\n", nt_errstr(status))); + goto cancel; + } + + if (dbwrap_transaction_commit(db) != 0) { + DEBUG(0, ("transaction_commit failed\n")); + status = NT_STATUS_INTERNAL_DB_CORRUPTION; + return status; + } + + return NT_STATUS_OK; + + cancel: + if (dbwrap_transaction_cancel(db) != 0) { + smb_panic("transaction_cancel failed"); + } + + return status; +} + +struct aliasmem_state { + TALLOC_CTX *mem_ctx; + const struct dom_sid *alias; + struct dom_sid **sids; + size_t *num; +}; + +static int collect_aliasmem(struct db_record *rec, void *priv) +{ + struct aliasmem_state *state = (struct aliasmem_state *)priv; + const char *p; + char *alias_string; + TALLOC_CTX *frame; + TDB_DATA key = dbwrap_record_get_key(rec); + TDB_DATA value = dbwrap_record_get_value(rec); + + if (strncmp((const char *)key.dptr, MEMBEROF_PREFIX, + MEMBEROF_PREFIX_LEN) != 0) + return 0; + + p = (const char *)value.dptr; + + frame = talloc_stackframe(); + + while (next_token_talloc(frame, &p, &alias_string, " ")) { + struct dom_sid alias, member; + const char *member_string; + uint32_t num_sids; + + if (!string_to_sid(&alias, alias_string)) + continue; + + if (dom_sid_compare(state->alias, &alias) != 0) + continue; + + /* Ok, we found the alias we're looking for in the membership + * list currently scanned. The key represents the alias + * member. Add that. */ + + member_string = strchr((const char *)key.dptr, '/'); + + /* Above we tested for MEMBEROF_PREFIX which includes the + * slash. */ + + SMB_ASSERT(member_string != NULL); + member_string += 1; + + if (!string_to_sid(&member, member_string)) + continue; + + num_sids = *state->num; + if (!NT_STATUS_IS_OK(add_sid_to_array(state->mem_ctx, &member, + state->sids, + &num_sids))) + { + /* talloc fail. */ + break; + } + *state->num = num_sids; + } + + TALLOC_FREE(frame); + return 0; +} + +static NTSTATUS enum_aliasmem(const struct dom_sid *alias, TALLOC_CTX *mem_ctx, + struct dom_sid **sids, size_t *num) +{ + GROUP_MAP *map; + struct aliasmem_state state; + + map = talloc_zero(talloc_tos(), GROUP_MAP); + if (!map) { + return NT_STATUS_NO_MEMORY; + } + + if (!get_group_map_from_sid(*alias, map)) { + TALLOC_FREE(map); + return NT_STATUS_NO_SUCH_ALIAS; + } + + if ((map->sid_name_use != SID_NAME_ALIAS) && + (map->sid_name_use != SID_NAME_WKN_GRP)) { + TALLOC_FREE(map); + return NT_STATUS_NO_SUCH_ALIAS; + } + + TALLOC_FREE(map); + + *sids = NULL; + *num = 0; + + state.alias = alias; + state.sids = sids; + state.num = num; + state.mem_ctx = mem_ctx; + + dbwrap_traverse_read(db, collect_aliasmem, &state, NULL); + return NT_STATUS_OK; +} + +static NTSTATUS del_aliasmem(const struct dom_sid *alias, const struct dom_sid *member) +{ + NTSTATUS status; + struct dom_sid *sids; + size_t i, num; + bool found = False; + char *member_string; + char *key; + struct dom_sid_buf sid_string; + + if (dbwrap_transaction_start(db) != 0) { + DEBUG(0, ("transaction_start failed\n")); + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + + status = alias_memberships(member, 1, &sids, &num); + + if (!NT_STATUS_IS_OK(status)) { + goto cancel; + } + + for (i=0; itdb switching code -------------------------------------------- */ + +/* change this if the data format ever changes */ +#define LTDB_PACKING_FORMAT 0x26011967 + +/* old packing formats (not supported for now, + * it was never used for group mapping AFAIK) */ +#define LTDB_PACKING_FORMAT_NODN 0x26011966 + +static unsigned int pull_uint32(uint8_t *p, int ofs) +{ + p += ofs; + return p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24); +} + +/* + unpack a ldb message from a linear buffer in TDB_DATA +*/ +static int convert_ldb_record(TDB_CONTEXT *ltdb, TDB_DATA key, + TDB_DATA data, void *ptr) +{ + TALLOC_CTX *tmp_ctx = talloc_tos(); + GROUP_MAP *map = NULL; + uint8_t *p; + uint32_t format; + uint32_t num_el; + unsigned int remaining; + unsigned int i, j; + size_t len; + char *name; + char *val; + uint32_t num_mem = 0; + struct dom_sid *members = NULL; + int error = 0; + + p = (uint8_t *)data.dptr; + if (data.dsize < 8) { + errno = EIO; + goto failed; + } + + format = pull_uint32(p, 0); + num_el = pull_uint32(p, 4); + p += 8; + + remaining = data.dsize - 8; + + switch (format) { + case LTDB_PACKING_FORMAT: + len = strnlen((char *)p, remaining); + if (len == remaining) { + errno = EIO; + goto failed; + } + + if (*p == '@') { + /* ignore special LDB attributes */ + return 0; + } + + if (strncmp((char *)p, "rid=", 4)) { + /* unknown entry, ignore */ + DEBUG(3, ("Found unknown entry in group mapping " + "database named [%s]\n", (char *)p)); + return 0; + } + + remaining -= len + 1; + p += len + 1; + break; + + case LTDB_PACKING_FORMAT_NODN: + default: + errno = EIO; + goto failed; + } + + if (num_el == 0) { + /* bad entry, ignore */ + return 0; + } + + if (num_el > remaining / 6) { + errno = EIO; + goto failed; + } + + map = talloc_zero(NULL, GROUP_MAP); + if (!map) { + errno = ENOMEM; + goto failed; + } + + for (i = 0; i < num_el; i++) { + uint32_t num_vals; + + if (remaining < 10) { + errno = EIO; + goto failed; + } + len = strnlen((char *)p, remaining - 6); + if (len == remaining - 6) { + errno = EIO; + goto failed; + } + name = talloc_strndup(tmp_ctx, (char *)p, len); + if (name == NULL) { + errno = ENOMEM; + goto failed; + } + remaining -= len + 1; + p += len + 1; + + num_vals = pull_uint32(p, 0); + if (strcasecmp_m(name, "member") == 0) { + num_mem = num_vals; + members = talloc_array(tmp_ctx, struct dom_sid, num_mem); + if (members == NULL) { + errno = ENOMEM; + goto failed; + } + } else if (num_vals != 1) { + errno = EIO; + goto failed; + } + + p += 4; + remaining -= 4; + + for (j = 0; j < num_vals; j++) { + len = pull_uint32(p, 0); + if (len > remaining-5) { + errno = EIO; + goto failed; + } + + val = talloc_strndup(tmp_ctx, (char *)(p + 4), len); + if (val == NULL) { + errno = ENOMEM; + goto failed; + } + + remaining -= len+4+1; + p += len+4+1; + + /* we ignore unknown or uninteresting attributes + * (objectclass, etc.) */ + if (strcasecmp_m(name, "gidNumber") == 0) { + map->gid = smb_strtoul(val, + NULL, + 10, + &error, + SMB_STR_FULL_STR_CONV); + if (error != 0) { + errno = EIO; + goto failed; + } + } else if (strcasecmp_m(name, "sid") == 0) { + if (!string_to_sid(&map->sid, val)) { + errno = EIO; + goto failed; + } + } else if (strcasecmp_m(name, "sidNameUse") == 0) { + map->sid_name_use = + smb_strtoul(val, + NULL, + 10, + &error, + SMB_STR_FULL_STR_CONV); + if (error != 0) { + errno = EIO; + goto failed; + } + } else if (strcasecmp_m(name, "ntname") == 0) { + map->nt_name = talloc_strdup(map, val); + if (!map->nt_name) { + errno = ENOMEM; + goto failed; + } + } else if (strcasecmp_m(name, "comment") == 0) { + map->comment = talloc_strdup(map, val); + if (!map->comment) { + errno = ENOMEM; + goto failed; + } + } else if (strcasecmp_m(name, "member") == 0) { + if (!string_to_sid(&members[j], val)) { + errno = EIO; + goto failed; + } + } + + TALLOC_FREE(val); + } + + TALLOC_FREE(name); + } + + if (map->nt_name == NULL) { + errno = EIO; + goto failed; + } + + if (map->comment == NULL) { + map->comment = talloc_strdup(map, ""); + } + if (map->comment == NULL) { + errno = ENOMEM; + goto failed; + } + + if (!add_mapping_entry(map, 0)) { + errno = EIO; + goto failed; + } + + if (num_mem) { + for (j = 0; j < num_mem; j++) { + NTSTATUS status; + status = add_aliasmem(&map->sid, &members[j]); + if (!NT_STATUS_IS_OK(status)) { + errno = EIO; + goto failed; + } + } + } + + if (remaining != 0) { + DEBUG(0, ("Error: %d bytes unread in ltdb_unpack_data\n", + remaining)); + } + + TALLOC_FREE(map); + return 0; + +failed: + TALLOC_FREE(map); + return -1; +} + +static bool mapping_switch(const char *ldb_path) +{ + TDB_CONTEXT *ltdb; + TALLOC_CTX *frame; + char *new_path; + int ret; + + frame = talloc_stackframe(); + + ltdb = tdb_open_log(ldb_path, 0, TDB_DEFAULT, O_RDONLY, 0600); + if (ltdb == NULL) goto failed; + + /* ldb is just a very fancy tdb, read out raw data and perform + * conversion */ + ret = tdb_traverse(ltdb, convert_ldb_record, NULL); + if (ret < 0) goto failed; + + if (ltdb) { + tdb_close(ltdb); + ltdb = NULL; + } + + /* now rename the old db out of the way */ + new_path = state_path(talloc_tos(), "group_mapping.ldb.replaced"); + if (!new_path) { + goto failed; + } + if (rename(ldb_path, new_path) != 0) { + DEBUG(0,("Failed to rename old group mapping database\n")); + goto failed; + } + TALLOC_FREE(frame); + return True; + +failed: + DEBUG(0, ("Failed to switch to tdb group mapping database\n")); + if (ltdb) tdb_close(ltdb); + TALLOC_FREE(frame); + return False; +} + +static const struct mapping_backend tdb_backend = { + .add_mapping_entry = add_mapping_entry, + .get_group_map_from_sid = get_group_map_from_sid, + .get_group_map_from_gid = get_group_map_from_gid, + .get_group_map_from_ntname = get_group_map_from_ntname, + .group_map_remove = group_map_remove, + .enum_group_mapping = enum_group_mapping, + .one_alias_membership = one_alias_membership, + .add_aliasmem = add_aliasmem, + .del_aliasmem = del_aliasmem, + .enum_aliasmem = enum_aliasmem +}; + +/* + initialise the tdb mapping backend + */ +const struct mapping_backend *groupdb_tdb_init(void) +{ + if (!init_group_mapping()) { + DEBUG(0,("Failed to initialise tdb mapping backend\n")); + return NULL; + } + + return &tdb_backend; +} diff --git a/source3/groupdb/mapping_tdb.h b/source3/groupdb/mapping_tdb.h new file mode 100644 index 0000000..86b0ecb --- /dev/null +++ b/source3/groupdb/mapping_tdb.h @@ -0,0 +1,30 @@ +/* + * Unix SMB/CIFS implementation. + * RPC Pipe client / server routines + * Copyright (C) Andrew Tridgell 1992-2006, + * Copyright (C) Jean François Micouleau 1998-2001. + * Copyright (C) Volker Lendecke 2006. + * Copyright (C) Gerald Carter 2006. + * + * 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 3 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, see . + */ + +#ifndef _GROUPDB_MAPPING_TDB_H_ +#define _GROUPDB_MAPPING_TDB_H_ + +/* The following definitions come from groupdb/mapping_tdb.c */ + +const struct mapping_backend *groupdb_tdb_init(void); + +#endif /* _GROUPDB_MAPPING_TDB_H_ */ -- cgit v1.2.3