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Diffstat (limited to 'source/groupdb/mapping.c')
| -rw-r--r-- | source/groupdb/mapping.c | 1438 |
1 files changed, 1438 insertions, 0 deletions
diff --git a/source/groupdb/mapping.c b/source/groupdb/mapping.c new file mode 100644 index 00000000000..d476f5cac13 --- /dev/null +++ b/source/groupdb/mapping.c @@ -0,0 +1,1438 @@ +/* + * Unix SMB/CIFS implementation. + * RPC Pipe client / server routines + * Copyright (C) Andrew Tridgell 1992-2000, + * Copyright (C) Jean François Micouleau 1998-2001. + * + * 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" + +static TDB_CONTEXT *tdb; /* used for driver files */ + +#define DATABASE_VERSION_V1 1 /* native byte format. */ +#define DATABASE_VERSION_V2 2 /* le format. */ + +#define GROUP_PREFIX "UNIXGROUP/" + +/* 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/" + +/**************************************************************************** +dump the mapping group mapping to a text file +****************************************************************************/ +char *decode_sid_name_use(fstring group, enum SID_NAME_USE name_use) +{ + static fstring group_type; + + switch(name_use) { + case SID_NAME_USER: + fstrcpy(group_type,"User"); + break; + case SID_NAME_DOM_GRP: + fstrcpy(group_type,"Domain group"); + break; + case SID_NAME_DOMAIN: + fstrcpy(group_type,"Domain"); + break; + case SID_NAME_ALIAS: + fstrcpy(group_type,"Local group"); + break; + case SID_NAME_WKN_GRP: + fstrcpy(group_type,"Builtin group"); + break; + case SID_NAME_DELETED: + fstrcpy(group_type,"Deleted"); + break; + case SID_NAME_INVALID: + fstrcpy(group_type,"Invalid"); + break; + case SID_NAME_UNKNOWN: + default: + fstrcpy(group_type,"Unknown type"); + break; + } + + fstrcpy(group, group_type); + return group_type; +} + +/**************************************************************************** +initialise first time the mapping list - called from init_group_mapping() +****************************************************************************/ +static BOOL default_group_mapping(void) +{ + DOM_SID sid_admins; + DOM_SID sid_users; + DOM_SID sid_guests; + fstring str_admins; + fstring str_users; + fstring str_guests; + + /* Add the Wellknown groups */ + + add_initial_entry(-1, "S-1-5-32-544", SID_NAME_WKN_GRP, "Administrators", ""); + add_initial_entry(-1, "S-1-5-32-545", SID_NAME_WKN_GRP, "Users", ""); + add_initial_entry(-1, "S-1-5-32-546", SID_NAME_WKN_GRP, "Guests", ""); + add_initial_entry(-1, "S-1-5-32-547", SID_NAME_WKN_GRP, "Power Users", ""); + add_initial_entry(-1, "S-1-5-32-548", SID_NAME_WKN_GRP, "Account Operators", ""); + add_initial_entry(-1, "S-1-5-32-549", SID_NAME_WKN_GRP, "System Operators", ""); + add_initial_entry(-1, "S-1-5-32-550", SID_NAME_WKN_GRP, "Print Operators", ""); + add_initial_entry(-1, "S-1-5-32-551", SID_NAME_WKN_GRP, "Backup Operators", ""); + add_initial_entry(-1, "S-1-5-32-552", SID_NAME_WKN_GRP, "Replicators", ""); + + /* Add the defaults domain groups */ + + sid_copy(&sid_admins, get_global_sam_sid()); + sid_append_rid(&sid_admins, DOMAIN_GROUP_RID_ADMINS); + sid_to_string(str_admins, &sid_admins); + add_initial_entry(-1, str_admins, SID_NAME_DOM_GRP, "Domain Admins", ""); + + sid_copy(&sid_users, get_global_sam_sid()); + sid_append_rid(&sid_users, DOMAIN_GROUP_RID_USERS); + sid_to_string(str_users, &sid_users); + add_initial_entry(-1, str_users, SID_NAME_DOM_GRP, "Domain Users", ""); + + sid_copy(&sid_guests, get_global_sam_sid()); + sid_append_rid(&sid_guests, DOMAIN_GROUP_RID_GUESTS); + sid_to_string(str_guests, &sid_guests); + add_initial_entry(-1, str_guests, SID_NAME_DOM_GRP, "Domain Guests", ""); + + return True; +} + +/**************************************************************************** + Open the group mapping tdb. +****************************************************************************/ + +static BOOL init_group_mapping(void) +{ + static pid_t local_pid; + const char *vstring = "INFO/version"; + int32 vers_id; + + if (tdb && local_pid == sys_getpid()) + return True; + tdb = tdb_open_log(lock_path("group_mapping.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600); + if (!tdb) { + DEBUG(0,("Failed to open group mapping database\n")); + return False; + } + + local_pid = sys_getpid(); + + /* handle a Samba upgrade */ + tdb_lock_bystring(tdb, vstring, 0); + + /* 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 (vers_id != DATABASE_VERSION_V2) { + tdb_traverse(tdb, tdb_traverse_delete_fn, NULL); + tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2); + } + + tdb_unlock_bystring(tdb, vstring); + + /* write a list of default groups */ + if(!default_group_mapping()) + return False; + + return True; +} + +/**************************************************************************** +****************************************************************************/ +static BOOL add_mapping_entry(GROUP_MAP *map, int flag) +{ + TDB_DATA kbuf, dbuf; + pstring key, buf; + fstring string_sid=""; + int len; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + sid_to_string(string_sid, &map->sid); + + len = tdb_pack(buf, sizeof(buf), "ddff", + map->gid, map->sid_name_use, map->nt_name, map->comment); + + if (len > sizeof(buf)) + return False; + + slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid); + + kbuf.dsize = strlen(key)+1; + kbuf.dptr = key; + dbuf.dsize = len; + dbuf.dptr = buf; + if (tdb_store(tdb, kbuf, dbuf, flag) != 0) return False; + + return True; +} + +/**************************************************************************** +initialise first time the mapping list +****************************************************************************/ +BOOL add_initial_entry(gid_t gid, const char *sid, enum SID_NAME_USE sid_name_use, const char *nt_name, const char *comment) +{ + GROUP_MAP map; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + map.gid=gid; + if (!string_to_sid(&map.sid, sid)) { + DEBUG(0, ("string_to_sid failed: %s", sid)); + return False; + } + + map.sid_name_use=sid_name_use; + fstrcpy(map.nt_name, nt_name); + fstrcpy(map.comment, comment); + + return pdb_add_group_mapping_entry(&map); +} + +/**************************************************************************** + Return the sid and the type of the unix group. +****************************************************************************/ + +static BOOL get_group_map_from_sid(DOM_SID sid, GROUP_MAP *map) +{ + TDB_DATA kbuf, dbuf; + pstring key; + fstring string_sid; + int ret = 0; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + /* the key is the SID, retrieving is direct */ + + sid_to_string(string_sid, &sid); + slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid); + + kbuf.dptr = key; + kbuf.dsize = strlen(key)+1; + + dbuf = tdb_fetch(tdb, kbuf); + if (!dbuf.dptr) + return False; + + ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff", + &map->gid, &map->sid_name_use, &map->nt_name, &map->comment); + + SAFE_FREE(dbuf.dptr); + + if ( ret == -1 ) { + DEBUG(3,("get_group_map_from_sid: tdb_unpack failure\n")); + return False; + } + + sid_copy(&map->sid, &sid); + + return True; +} + +/**************************************************************************** + Return the sid and the type of the unix group. +****************************************************************************/ + +static BOOL get_group_map_from_gid(gid_t gid, GROUP_MAP *map) +{ + TDB_DATA kbuf, dbuf, newkey; + fstring string_sid; + int ret; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + /* we need to enumerate the TDB to find the GID */ + + for (kbuf = tdb_firstkey(tdb); + kbuf.dptr; + newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) { + + if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue; + + dbuf = tdb_fetch(tdb, kbuf); + if (!dbuf.dptr) + continue; + + fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX)); + + string_to_sid(&map->sid, string_sid); + + ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff", + &map->gid, &map->sid_name_use, &map->nt_name, &map->comment); + + SAFE_FREE(dbuf.dptr); + + if ( ret == -1 ) { + DEBUG(3,("get_group_map_from_gid: tdb_unpack failure\n")); + return False; + } + + if (gid==map->gid) { + SAFE_FREE(kbuf.dptr); + return True; + } + } + + return False; +} + +/**************************************************************************** + Return the sid and the type of the unix group. +****************************************************************************/ + +static BOOL get_group_map_from_ntname(const char *name, GROUP_MAP *map) +{ + TDB_DATA kbuf, dbuf, newkey; + fstring string_sid; + int ret; + + if(!init_group_mapping()) { + DEBUG(0,("get_group_map_from_ntname:failed to initialize group mapping\n")); + return(False); + } + + /* we need to enumerate the TDB to find the name */ + + for (kbuf = tdb_firstkey(tdb); + kbuf.dptr; + newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) { + + if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue; + + dbuf = tdb_fetch(tdb, kbuf); + if (!dbuf.dptr) + continue; + + fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX)); + + string_to_sid(&map->sid, string_sid); + + ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff", + &map->gid, &map->sid_name_use, &map->nt_name, &map->comment); + + SAFE_FREE(dbuf.dptr); + + if ( ret == -1 ) { + DEBUG(3,("get_group_map_from_ntname: tdb_unpack failure\n")); + return False; + } + + if (StrCaseCmp(name, map->nt_name)==0) { + SAFE_FREE(kbuf.dptr); + return True; + } + } + + return False; +} + +/**************************************************************************** + Remove a group mapping entry. +****************************************************************************/ + +static BOOL group_map_remove(const DOM_SID *sid) +{ + TDB_DATA kbuf, dbuf; + pstring key; + fstring string_sid; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + /* the key is the SID, retrieving is direct */ + + sid_to_string(string_sid, sid); + slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid); + + kbuf.dptr = key; + kbuf.dsize = strlen(key)+1; + + dbuf = tdb_fetch(tdb, kbuf); + if (!dbuf.dptr) + return False; + + SAFE_FREE(dbuf.dptr); + + if(tdb_delete(tdb, kbuf) != TDB_SUCCESS) + return False; + + return True; +} + +/**************************************************************************** + Enumerate the group mapping. +****************************************************************************/ + +static BOOL enum_group_mapping(enum SID_NAME_USE sid_name_use, GROUP_MAP **rmap, + int *num_entries, BOOL unix_only) +{ + TDB_DATA kbuf, dbuf, newkey; + fstring string_sid; + fstring group_type; + GROUP_MAP map; + GROUP_MAP *mapt; + int ret; + int entries=0; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + *num_entries=0; + *rmap=NULL; + + for (kbuf = tdb_firstkey(tdb); + kbuf.dptr; + newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) { + + if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) + continue; + + dbuf = tdb_fetch(tdb, kbuf); + if (!dbuf.dptr) + continue; + + fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX)); + + ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff", + &map.gid, &map.sid_name_use, &map.nt_name, &map.comment); + + SAFE_FREE(dbuf.dptr); + + if ( ret == -1 ) { + DEBUG(3,("enum_group_mapping: tdb_unpack failure\n")); + continue; + } + + /* list only the type or everything if UNKNOWN */ + if (sid_name_use!=SID_NAME_UNKNOWN && sid_name_use!=map.sid_name_use) { + DEBUG(11,("enum_group_mapping: group %s is not of the requested type\n", map.nt_name)); + continue; + } + + if (unix_only==ENUM_ONLY_MAPPED && map.gid==-1) { + DEBUG(11,("enum_group_mapping: group %s is non mapped\n", map.nt_name)); + continue; + } + + string_to_sid(&map.sid, string_sid); + + decode_sid_name_use(group_type, map.sid_name_use); + DEBUG(11,("enum_group_mapping: returning group %s of type %s\n", map.nt_name ,group_type)); + + mapt=(GROUP_MAP *)Realloc((*rmap), (entries+1)*sizeof(GROUP_MAP)); + if (!mapt) { + DEBUG(0,("enum_group_mapping: Unable to enlarge group map!\n")); + SAFE_FREE(*rmap); + return False; + } + else + (*rmap) = mapt; + + mapt[entries].gid = map.gid; + sid_copy( &mapt[entries].sid, &map.sid); + mapt[entries].sid_name_use = map.sid_name_use; + fstrcpy(mapt[entries].nt_name, map.nt_name); + fstrcpy(mapt[entries].comment, map.comment); + + entries++; + + } + + *num_entries=entries; + + 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 alias_memberships(const DOM_SID *sid, DOM_SID **sids, int *num) +{ + fstring key, string_sid; + TDB_DATA kbuf, dbuf; + const char *p; + + *num = 0; + *sids = NULL; + + if (!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_ACCESS_DENIED; + } + + sid_to_string(string_sid, sid); + slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, string_sid); + + kbuf.dsize = strlen(key)+1; + kbuf.dptr = key; + + dbuf = tdb_fetch(tdb, kbuf); + + if (dbuf.dptr == NULL) { + return NT_STATUS_OK; + } + + p = dbuf.dptr; + + while (next_token(&p, string_sid, " ", sizeof(string_sid))) { + + DOM_SID alias; + + if (!string_to_sid(&alias, string_sid)) + continue; + + add_sid_to_array(&alias, sids, num); + + if (sids == NULL) + return NT_STATUS_NO_MEMORY; + } + + SAFE_FREE(dbuf.dptr); + return NT_STATUS_OK; +} + +static BOOL is_aliasmem(const DOM_SID *alias, const DOM_SID *member) +{ + DOM_SID *sids; + int i, num; + + /* This feels the wrong way round, but the on-disk data structure + * dictates it this way. */ + if (!NT_STATUS_IS_OK(alias_memberships(member, &sids, &num))) + return False; + + for (i=0; i<num; i++) { + if (sid_compare(alias, &sids[i]) == 0) { + SAFE_FREE(sids); + return True; + } + } + SAFE_FREE(sids); + return False; +} + +static NTSTATUS add_aliasmem(const DOM_SID *alias, const DOM_SID *member) +{ + GROUP_MAP map; + TDB_DATA kbuf, dbuf; + pstring key; + fstring string_sid; + char *new_memberstring; + int result; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_ACCESS_DENIED; + } + + if (!get_group_map_from_sid(*alias, &map)) + return NT_STATUS_NO_SUCH_ALIAS; + + if ( (map.sid_name_use != SID_NAME_ALIAS) && + (map.sid_name_use != SID_NAME_WKN_GRP) ) + return NT_STATUS_NO_SUCH_ALIAS; + + if (is_aliasmem(alias, member)) + return NT_STATUS_MEMBER_IN_ALIAS; + + sid_to_string(string_sid, member); + slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, string_sid); + + kbuf.dsize = strlen(key)+1; + kbuf.dptr = key; + + dbuf = tdb_fetch(tdb, kbuf); + + sid_to_string(string_sid, alias); + + if (dbuf.dptr != NULL) { + asprintf(&new_memberstring, "%s %s", (char *)(dbuf.dptr), + string_sid); + } else { + new_memberstring = strdup(string_sid); + } + + if (new_memberstring == NULL) + return NT_STATUS_NO_MEMORY; + + SAFE_FREE(dbuf.dptr); + dbuf.dsize = strlen(new_memberstring)+1; + dbuf.dptr = new_memberstring; + + result = tdb_store(tdb, kbuf, dbuf, 0); + + SAFE_FREE(new_memberstring); + + return (result == 0 ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED); +} + +struct aliasmem_closure { + const DOM_SID *alias; + DOM_SID **sids; + int *num; +}; + +static int collect_aliasmem(TDB_CONTEXT *tdb_ctx, TDB_DATA key, TDB_DATA data, + void *state) +{ + struct aliasmem_closure *closure = (struct aliasmem_closure *)state; + const char *p; + fstring alias_string; + + if (strncmp(key.dptr, MEMBEROF_PREFIX, + strlen(MEMBEROF_PREFIX)) != 0) + return 0; + + p = data.dptr; + + while (next_token(&p, alias_string, " ", sizeof(alias_string))) { + + DOM_SID alias, member; + const char *member_string; + + + if (!string_to_sid(&alias, alias_string)) + continue; + + if (sid_compare(closure->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(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; + + add_sid_to_array(&member, closure->sids, closure->num); + } + + return 0; +} + +static NTSTATUS enum_aliasmem(const DOM_SID *alias, DOM_SID **sids, int *num) +{ + GROUP_MAP map; + struct aliasmem_closure closure; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return NT_STATUS_ACCESS_DENIED; + } + + if (!get_group_map_from_sid(*alias, &map)) + return NT_STATUS_NO_SUCH_ALIAS; + + if ( (map.sid_name_use != SID_NAME_ALIAS) && + (map.sid_name_use != SID_NAME_WKN_GRP) ) + return NT_STATUS_NO_SUCH_ALIAS; + + *sids = NULL; + *num = 0; + + closure.alias = alias; + closure.sids = sids; + closure.num = num; + + tdb_traverse(tdb, collect_aliasmem, &closure); + return NT_STATUS_OK; +} + +static NTSTATUS del_aliasmem(const DOM_SID *alias, const DOM_SID *member) +{ + NTSTATUS result; + DOM_SID *sids; + int i, num; + BOOL found = False; + char *member_string; + TDB_DATA kbuf, dbuf; + pstring key; + fstring sid_string; + + result = alias_memberships(member, &sids, &num); + + if (!NT_STATUS_IS_OK(result)) + return result; + + for (i=0; i<num; i++) { + if (sid_compare(&sids[i], alias) == 0) { + found = True; + break; + } + } + + if (!found) { + SAFE_FREE(sids); + return NT_STATUS_MEMBER_NOT_IN_ALIAS; + } + + if (i < num) + sids[i] = sids[num-1]; + + num -= 1; + + sid_to_string(sid_string, member); + slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, sid_string); + + kbuf.dsize = strlen(key)+1; + kbuf.dptr = key; + + if (num == 0) + return tdb_delete(tdb, kbuf) == 0 ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; + + member_string = strdup(""); + + if (member_string == NULL) { + SAFE_FREE(sids); + return NT_STATUS_NO_MEMORY; + } + + for (i=0; i<num; i++) { + char *s = member_string; + + sid_to_string(sid_string, &sids[i]); + asprintf(&member_string, "%s %s", s, sid_string); + + SAFE_FREE(s); + if (member_string == NULL) { + SAFE_FREE(sids); + return NT_STATUS_NO_MEMORY; + } + } + + dbuf.dsize = strlen(member_string)+1; + dbuf.dptr = member_string; + + result = tdb_store(tdb, kbuf, dbuf, 0) == 0 ? + NT_STATUS_OK : NT_STATUS_ACCESS_DENIED; + + SAFE_FREE(sids); + SAFE_FREE(member_string); + + return result; +} + +/* + * + * 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(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(); + + if ( !ret ) + return False; + + DEBUG(10, ("get_domain_group_from_sid: SID found in the TDB\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; +} + + +/* get a local (alias) group from it's SID */ + +BOOL get_local_group_from_sid(DOM_SID *sid, GROUP_MAP *map) +{ + BOOL ret; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + /* The group is in the mapping table */ + become_root(); + ret = pdb_getgrsid(map, *sid); + unbecome_root(); + + if ( !ret ) + return False; + + if ( ( (map->sid_name_use != SID_NAME_ALIAS) && + (map->sid_name_use != SID_NAME_WKN_GRP) ) + || (map->gid == -1) + || (getgrgid(map->gid) == NULL) ) + { + return False; + } + +#if 1 /* JERRY */ + /* local groups only exist in the group mapping DB so this + is not necessary */ + + else { + /* the group isn't in the mapping table. + * make one based on the unix information */ + uint32 alias_rid; + struct group *grp; + + sid_peek_rid(sid, &alias_rid); + map->gid=pdb_group_rid_to_gid(alias_rid); + + grp = getgrgid(map->gid); + if ( !grp ) { + DEBUG(3,("get_local_group_from_sid: No unix group for [%ul]\n", map->gid)); + return False; + } + + map->sid_name_use=SID_NAME_ALIAS; + + fstrcpy(map->nt_name, grp->gr_name); + fstrcpy(map->comment, "Local Unix Group"); + + sid_copy(&map->sid, sid); + } +#endif + + return True; +} + +/* get a builtin group from it's SID */ + +BOOL get_builtin_group_from_sid(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); + } + + become_root(); + ret = pdb_getgrsid(map, *sid); + unbecome_root(); + + if ( !ret ) + return False; + + if (map->sid_name_use!=SID_NAME_WKN_GRP) { + return False; + } + + if (map->gid==-1) { + return False; + } + + if ( (grp=getgrgid(map->gid)) == NULL) { + return False; + } + + return True; +} + + + +/**************************************************************************** +Returns a GROUP_MAP struct based on the gid. +****************************************************************************/ +BOOL get_group_from_gid(gid_t gid, GROUP_MAP *map) +{ + struct group *grp; + BOOL ret; + + if(!init_group_mapping()) { + DEBUG(0,("failed to initialize group mapping\n")); + return(False); + } + + if ( (grp=getgrgid(gid)) == NULL) + return False; + + /* + * make a group map from scratch if doesn't exist. + */ + + become_root(); + ret = pdb_getgrgid(map, gid); + unbecome_root(); + + if ( !ret ) { + map->gid=gid; + map->sid_name_use=SID_NAME_ALIAS; + + /* interim solution until we have a last RID allocated */ + + sid_copy(&map->sid, get_global_sam_sid()); + sid_append_rid(&map->sid, pdb_gid_to_group_rid(gid)); + + fstrcpy(map->nt_name, grp->gr_name); + fstrcpy(map->comment, "Local Unix Group"); + } + + return True; +} + +/**************************************************************************** + Create a UNIX group on demand. +****************************************************************************/ + +int smb_create_group(char *unix_group, gid_t *new_gid) +{ + pstring add_script; + int ret = -1; + int fd = 0; + + *new_gid = 0; + + /* defer to scripts */ + + if ( *lp_addgroup_script() ) { + pstrcpy(add_script, lp_addgroup_script()); + pstring_sub(add_script, "%g", unix_group); + ret = smbrun(add_script, (new_gid!=NULL) ? &fd : NULL); + DEBUG(3,("smb_create_group: Running the command `%s' gave %d\n",add_script,ret)); + if (ret != 0) + return ret; + + if (fd != 0) { + fstring output; + + *new_gid = 0; + if (read(fd, output, sizeof(output)) > 0) { + *new_gid = (gid_t)strtoul(output, NULL, 10); + } + + close(fd); + } + + } else if ( winbind_create_group( unix_group, NULL ) ) { + + DEBUG(3,("smb_create_group: winbindd created the group (%s)\n", + unix_group)); + ret = 0; + } + + 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(char *unix_group) +{ + pstring del_script; + int ret; + + /* defer to scripts */ + + if ( *lp_delgroup_script() ) { + pstrcpy(del_script, lp_delgroup_script()); + pstring_sub(del_script, "%g", unix_group); + ret = smbrun(del_script,NULL); + DEBUG(3,("smb_delete_group: Running the command `%s' gave %d\n",del_script,ret)); + return ret; + } + + if ( winbind_delete_group( unix_group ) ) { + DEBUG(3,("smb_delete_group: winbindd deleted the group (%s)\n", + unix_group)); + return 0; + } + + return -1; +} + +/**************************************************************************** + Set a user's primary UNIX group. +****************************************************************************/ +int smb_set_primary_group(const char *unix_group, const char* unix_user) +{ + pstring add_script; + int ret; + + /* defer to scripts */ + + if ( *lp_setprimarygroup_script() ) { + pstrcpy(add_script, lp_setprimarygroup_script()); + all_string_sub(add_script, "%g", unix_group, sizeof(add_script)); + all_string_sub(add_script, "%u", unix_user, sizeof(add_script)); + ret = smbrun(add_script,NULL); + DEBUG(3,("smb_set_primary_group: " + "Running the command `%s' gave %d\n",add_script,ret)); + return ret; + } + + /* Try winbindd */ + + if ( winbind_set_user_primary_group( unix_user, unix_group ) ) { + DEBUG(3,("smb_delete_group: winbindd set the group (%s) as the primary group for user (%s)\n", + unix_group, unix_user)); + return 0; + } + + return -1; +} + +/**************************************************************************** + Add a user to a UNIX group. +****************************************************************************/ + +int smb_add_user_group(char *unix_group, char *unix_user) +{ + pstring add_script; + int ret; + + /* defer to scripts */ + + if ( *lp_addusertogroup_script() ) { + pstrcpy(add_script, lp_addusertogroup_script()); + pstring_sub(add_script, "%g", unix_group); + pstring_sub(add_script, "%u", unix_user); + ret = smbrun(add_script,NULL); + DEBUG(3,("smb_add_user_group: Running the command `%s' gave %d\n",add_script,ret)); + return ret; + } + + /* Try winbindd */ + + if ( winbind_add_user_to_group( unix_user, unix_group ) ) { + DEBUG(3,("smb_delete_group: winbindd added user (%s) to the group (%s)\n", + unix_user, unix_group)); + return -1; + } + + return -1; +} + +/**************************************************************************** + Delete a user from a UNIX group +****************************************************************************/ + +int smb_delete_user_group(const char *unix_group, const char *unix_user) +{ + pstring del_script; + int ret; + + /* defer to scripts */ + + if ( *lp_deluserfromgroup_script() ) { + pstrcpy(del_script, lp_deluserfromgroup_script()); + pstring_sub(del_script, "%g", unix_group); + pstring_sub(del_script, "%u", unix_user); + ret = smbrun(del_script,NULL); + DEBUG(3,("smb_delete_user_group: Running the command `%s' gave %d\n",del_script,ret)); + return ret; + } + + /* Try winbindd */ + + if ( winbind_remove_user_from_group( unix_user, unix_group ) ) { + DEBUG(3,("smb_delete_group: winbindd removed user (%s) from the group (%s)\n", + unix_user, unix_group)); + return 0; + } + + return -1; +} + + +NTSTATUS pdb_default_getgrsid(struct pdb_methods *methods, GROUP_MAP *map, + DOM_SID sid) +{ + return 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) +{ + return 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) +{ + return 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) +{ + return 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) +{ + return add_mapping_entry(map, TDB_REPLACE) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_delete_group_mapping_entry(struct pdb_methods *methods, + DOM_SID sid) +{ + return group_map_remove(&sid) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_enum_group_mapping(struct pdb_methods *methods, + enum SID_NAME_USE sid_name_use, + GROUP_MAP **rmap, int *num_entries, + BOOL unix_only) +{ + return enum_group_mapping(sid_name_use, rmap, num_entries, unix_only) ? + NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_default_find_alias(struct pdb_methods *methods, + const char *name, DOM_SID *sid) +{ + GROUP_MAP map; + + if (!pdb_getgrnam(&map, name)) + return NT_STATUS_NO_SUCH_ALIAS; + + if ((map.sid_name_use != SID_NAME_WKN_GRP) && + (map.sid_name_use != SID_NAME_ALIAS)) + return NT_STATUS_OBJECT_TYPE_MISMATCH; + + sid_copy(sid, &map.sid); + return NT_STATUS_OK; +} + +NTSTATUS pdb_default_create_alias(struct pdb_methods *methods, + const char *name, uint32 *rid) +{ + DOM_SID sid; + enum SID_NAME_USE type; + uint32 new_rid; + gid_t gid; + + GROUP_MAP map; + + if (lookup_name(get_global_sam_name(), name, &sid, &type)) + return NT_STATUS_ALIAS_EXISTS; + + if (!winbind_allocate_rid(&new_rid)) + return NT_STATUS_ACCESS_DENIED; + + sid_copy(&sid, get_global_sam_sid()); + sid_append_rid(&sid, new_rid); + + /* Here we allocate the gid */ + if (!winbind_sid_to_gid(&gid, &sid)) { + DEBUG(0, ("Could not get gid for new RID\n")); + return NT_STATUS_ACCESS_DENIED; + } + + map.gid = gid; + sid_copy(&map.sid, &sid); + map.sid_name_use = SID_NAME_ALIAS; + fstrcpy(map.nt_name, name); + fstrcpy(map.comment, ""); + + if (!pdb_add_group_mapping_entry(&map)) { + DEBUG(0, ("Could not add group mapping entry for alias %s\n", + name)); + return NT_STATUS_ACCESS_DENIED; + } + + *rid = new_rid; + + return NT_STATUS_OK; +} + +NTSTATUS pdb_default_delete_alias(struct pdb_methods *methods, + const DOM_SID *sid) +{ + return pdb_delete_group_mapping_entry(*sid) ? + NT_STATUS_OK : NT_STATUS_ACCESS_DENIED; +} + +NTSTATUS pdb_default_enum_aliases(struct pdb_methods *methods, + const DOM_SID *sid, + uint32 start_idx, uint32 max_entries, + uint32 *num_aliases, + struct acct_info **info) +{ + extern DOM_SID global_sid_Builtin; + + GROUP_MAP *map; + int i, num_maps; + enum SID_NAME_USE type = SID_NAME_UNKNOWN; + + if (sid_compare(sid, get_global_sam_sid()) == 0) + type = SID_NAME_ALIAS; + + if (sid_compare(sid, &global_sid_Builtin) == 0) + type = SID_NAME_WKN_GRP; + + if (!pdb_enum_group_mapping(type, &map, &num_maps, False) || + (num_maps == 0)) { + *num_aliases = 0; + *info = NULL; + goto done; + } + + if (start_idx > num_maps) { + *num_aliases = 0; + *info = NULL; + goto done; + } + + *num_aliases = num_maps - start_idx; + + if (*num_aliases > max_entries) + *num_aliases = max_entries; + + *info = malloc(sizeof(struct acct_info) * (*num_aliases)); + + for (i=0; i<*num_aliases; i++) { + fstrcpy((*info)[i].acct_name, map[i+start_idx].nt_name); + fstrcpy((*info)[i].acct_desc, map[i+start_idx].comment); + sid_peek_rid(&map[i].sid, &(*info)[i+start_idx].rid); + } + + done: + SAFE_FREE(map); + return NT_STATUS_OK; +} + +NTSTATUS pdb_default_get_aliasinfo(struct pdb_methods *methods, + const DOM_SID *sid, + struct acct_info *info) +{ + GROUP_MAP map; + + if (!pdb_getgrsid(&map, *sid)) + return NT_STATUS_NO_SUCH_ALIAS; + + fstrcpy(info->acct_name, map.nt_name); + fstrcpy(info->acct_desc, map.comment); + sid_peek_rid(&map.sid, &info->rid); + return NT_STATUS_OK; +} + +NTSTATUS pdb_default_set_aliasinfo(struct pdb_methods *methods, + const DOM_SID *sid, + struct acct_info *info) +{ + GROUP_MAP map; + + if (!pdb_getgrsid(&map, *sid)) + return NT_STATUS_NO_SUCH_ALIAS; + + fstrcpy(map.comment, info->acct_desc); + + if (!pdb_update_group_mapping_entry(&map)) + return NT_STATUS_ACCESS_DENIED; + + return NT_STATUS_OK; +} + +NTSTATUS pdb_default_add_aliasmem(struct pdb_methods *methods, + const DOM_SID *alias, const DOM_SID *member) +{ + return add_aliasmem(alias, member); +} + +NTSTATUS pdb_default_del_aliasmem(struct pdb_methods *methods, + const DOM_SID *alias, const DOM_SID *member) +{ + return del_aliasmem(alias, member); +} + +NTSTATUS pdb_default_enum_aliasmem(struct pdb_methods *methods, + const DOM_SID *alias, DOM_SID **members, + int *num_members) +{ + return enum_aliasmem(alias, members, num_members); +} + +NTSTATUS pdb_default_alias_memberships(struct pdb_methods *methods, + const DOM_SID *sid, + DOM_SID **aliases, int *num) +{ + return alias_memberships(sid, aliases, num); +} + +/********************************************************************** + no ops for passdb backends that don't implement group mapping + *********************************************************************/ + +NTSTATUS pdb_nop_getgrsid(struct pdb_methods *methods, GROUP_MAP *map, + DOM_SID sid) +{ + return NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_nop_getgrgid(struct pdb_methods *methods, GROUP_MAP *map, + gid_t gid) +{ + return NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_nop_getgrnam(struct pdb_methods *methods, GROUP_MAP *map, + const char *name) +{ + return NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_nop_add_group_mapping_entry(struct pdb_methods *methods, + GROUP_MAP *map) +{ + return NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_nop_update_group_mapping_entry(struct pdb_methods *methods, + GROUP_MAP *map) +{ + return NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_nop_delete_group_mapping_entry(struct pdb_methods *methods, + DOM_SID sid) +{ + return NT_STATUS_UNSUCCESSFUL; +} + +NTSTATUS pdb_nop_enum_group_mapping(struct pdb_methods *methods, + enum SID_NAME_USE sid_name_use, + GROUP_MAP **rmap, int *num_entries, + BOOL unix_only) +{ + return NT_STATUS_UNSUCCESSFUL; +} + +/**************************************************************************** + These need to be redirected through pdb_interface.c +****************************************************************************/ +BOOL pdb_get_dom_grp_info(const DOM_SID *sid, struct acct_info *info) +{ + GROUP_MAP map; + BOOL res; + + become_root(); + res = get_domain_group_from_sid(*sid, &map); + unbecome_root(); + + if (!res) + return False; + + fstrcpy(info->acct_name, map.nt_name); + fstrcpy(info->acct_desc, map.comment); + sid_peek_rid(sid, &info->rid); + return True; +} + +BOOL pdb_set_dom_grp_info(const DOM_SID *sid, const struct acct_info *info) +{ + GROUP_MAP map; + + if (!get_domain_group_from_sid(*sid, &map)) + return False; + + fstrcpy(map.nt_name, info->acct_name); + fstrcpy(map.comment, info->acct_desc); + + return pdb_update_group_mapping_entry(&map); +} + + |