#include "lib/samba3/samba3.h"
#include "lib/tdb/include/tdbutil.h"
#include "system/filesys.h"
+#include "pstring.h"
#define DATABASE_VERSION_V1 1 /* native byte format. */
#define DATABASE_VERSION_V2 2 /* le format. */
*/
#define MEMBEROF_PREFIX "MEMBEROF/"
-#define ENUM_ONLY_MAPPED True
-#define ENUM_ALL_MAPPED False
-
-
-/****************************************************************************
-dump the mapping group mapping to a text file
-****************************************************************************/
-static const char *decode_sid_name_use(enum SID_NAME_USE name_use)
-{
- switch(name_use) {
- case SID_NAME_USER:
- return "User";
- case SID_NAME_DOM_GRP:
- return "Domain group";
- case SID_NAME_DOMAIN:
- return "Domain";
- case SID_NAME_ALIAS:
- return "Local group";
- case SID_NAME_WKN_GRP:
- return "Builtin group";
- case SID_NAME_DELETED:
- return "Deleted";
- case SID_NAME_INVALID:
- return "Invalid";
- case SID_NAME_UNKNOWN:
- default:
- return "Unknown type";
- }
-}
-
/****************************************************************************
Open the group mapping tdb.
****************************************************************************/
-static TDB_CONTEXT *tdbgroup_open(const char *file)
+NTSTATUS samba3_read_grouptdb(const char *file, TALLOC_CTX *ctx, struct samba3_groupdb *db)
{
int32_t vers_id;
+ TDB_DATA kbuf, dbuf, newkey;
+ int ret;
TDB_CONTEXT *tdb = tdb_open(file, 0, TDB_DEFAULT, O_RDONLY, 0600);
if (!tdb) {
DEBUG(0,("Failed to open group mapping database\n"));
- return NULL;
+ return NT_STATUS_UNSUCCESSFUL;
}
/* Cope with byte-reversed older versions of the db. */
}
if (vers_id != DATABASE_VERSION_V2) {
- return NULL;
- }
-
- return tdb;
-}
-
-/****************************************************************************
- Return the sid and the type of the unix group.
-****************************************************************************/
-
-static BOOL get_group_map_from_sid(TDB_CONTEXT *tdb, struct dom_sid sid, struct samba3_groupmapping *map)
-{
- TDB_DATA kbuf, dbuf;
- const char *key;
- int ret = 0;
-
- /* the key is the SID, retrieving is direct */
-
- kbuf.dptr = talloc_asprintf(tdb, "%s%s", GROUP_PREFIX, dom_sid_string(tdb, &sid));
- kbuf.dsize = strlen(key)+1;
-
- dbuf = tdb_fetch(tdb, kbuf);
- if (!dbuf.dptr)
- return False;
-
- ret = tdb_unpack(tdb, 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;
+ return NT_STATUS_UNSUCCESSFUL;
}
- map->sid = dom_sid_dup(tdb, &sid);
-
- return True;
-}
-
-/****************************************************************************
- Return the sid and the type of the unix group.
-****************************************************************************/
-
-static BOOL get_group_map_from_gid(TDB_CONTEXT *tdb, gid_t gid, struct samba3_groupmapping *map)
-{
- TDB_DATA kbuf, dbuf, newkey;
- int ret;
-
- /* we need to enumerate the TDB to find the GID */
+ db->groupmappings = NULL;
+ db->groupmap_count = 0;
+ db->aliases = NULL;
+ db->alias_count = 0;
for (kbuf = tdb_firstkey(tdb);
kbuf.dptr;
newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
+ struct samba3_groupmapping map;
- if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
-
- dbuf = tdb_fetch(tdb, kbuf);
- if (!dbuf.dptr)
- continue;
+ if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) == 0)
+ {
+ dbuf = tdb_fetch(tdb, kbuf);
+ if (!dbuf.dptr)
+ continue;
+ map.sid = dom_sid_parse_talloc(tdb, kbuf.dptr+strlen(GROUP_PREFIX));
- map->sid = dom_sid_parse_talloc(tdb, kbuf.dptr+strlen(GROUP_PREFIX));
-
- ret = tdb_unpack(tdb, dbuf.dptr, dbuf.dsize, "ddff",
- &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
+ ret = tdb_unpack(tdb, dbuf.dptr, dbuf.dsize, "ddff",
+ &map.gid, &map.sid_name_use, &map.nt_name, &map.comment);
- SAFE_FREE(dbuf.dptr);
+ 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;
- }
- }
+ if ( ret == -1 ) {
+ DEBUG(3,("enum_group_mapping: tdb_unpack failure\n"));
+ continue;
+ }
- return False;
-}
+ db->groupmappings = talloc_realloc(tdb, db->groupmappings, struct samba3_groupmapping, db->groupmap_count+1);
-/****************************************************************************
- Return the sid and the type of the unix group.
-****************************************************************************/
+ if (!db->groupmappings)
+ return NT_STATUS_NO_MEMORY;
-static BOOL get_group_map_from_ntname(TDB_CONTEXT *tdb, const char *name, struct samba3_groupmapping *map)
-{
- TDB_DATA kbuf, dbuf, newkey;
- int ret;
-
- /* we need to enumerate the TDB to find the name */
+ db->groupmappings[db->groupmap_count] = map;
- for (kbuf = tdb_firstkey(tdb);
- kbuf.dptr;
- newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
+ db->groupmap_count++;
+ }
- if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
-
- dbuf = tdb_fetch(tdb, kbuf);
- if (!dbuf.dptr)
- continue;
+ if (strncmp(kbuf.dptr, MEMBEROF_PREFIX, strlen(MEMBEROF_PREFIX)) == 0)
+ {
+ struct samba3_alias alias;
+ pstring alias_string;
+ const char *p;
- map->sid = dom_sid_parse_talloc(tdb, kbuf.dptr+strlen(GROUP_PREFIX));
-
- ret = tdb_unpack(tdb, dbuf.dptr, dbuf.dsize, "ddff",
- &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
+ dbuf = tdb_fetch(tdb, kbuf);
+ if (!dbuf.dptr)
+ continue;
- SAFE_FREE(dbuf.dptr);
-
- if ( ret == -1 ) {
- DEBUG(3,("get_group_map_from_ntname: tdb_unpack failure\n"));
- return False;
- }
+ alias.sid = dom_sid_parse_talloc(ctx, kbuf.dptr+strlen(MEMBEROF_PREFIX));
+ alias.member_count = 0;
+ alias.members = NULL;
- if (StrCaseCmp(name, map->nt_name)==0) {
- SAFE_FREE(kbuf.dptr);
- return True;
- }
- }
+ p = dbuf.dptr;
+ while (next_token(&p, alias_string, " ", sizeof(alias_string))) {
- return False;
-}
+ alias.members = talloc_realloc(ctx, alias.members, struct dom_sid *, alias.member_count+1);
+ alias.members[alias.member_count] = dom_sid_parse_talloc(ctx, alias_string);
+ alias.member_count++;
-/****************************************************************************
- Enumerate the group mapping.
-****************************************************************************/
+ }
-static BOOL enum_group_mapping(TDB_CONTEXT *tdb, enum SID_NAME_USE sid_name_use, struct samba3_groupmapping **rmap,
- int *num_entries, BOOL unix_only)
-{
- TDB_DATA kbuf, dbuf, newkey;
- struct samba3_groupmapping map;
- struct samba3_groupmapping *mapt;
- int ret;
- int entries=0;
-
- *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;
-
- map.sid = dom_sid_parse_talloc(tdb, kbuf.dptr+strlen(GROUP_PREFIX));
-
- ret = tdb_unpack(tdb, 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;
+ db->aliases = talloc_realloc(ctx, db->aliases, struct samba3_alias, db->alias_count+1);
+ db->aliases[db->alias_count] = alias;
+ db->alias_count++;
}
-
- if (unix_only==ENUM_ONLY_MAPPED && map.gid==-1) {
- DEBUG(11,("enum_group_mapping: group %s is non mapped\n", map.nt_name));
- continue;
- }
-
- DEBUG(11,("enum_group_mapping: returning group %s of type %s\n", map.nt_name ,decode_sid_name_use(map.sid_name_use)));
-
- mapt = talloc_realloc(tdb, *rmap, struct samba3_groupmapping, entries+1);
- 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;
- mapt[entries].sid = dom_sid_dup(tdb, map.sid);
- mapt[entries].sid_name_use = map.sid_name_use;
- mapt[entries].nt_name = map.nt_name;
- 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 one_alias_membership(TDB_CONTEXT *tdb,
- const struct dom_sid *member, struct dom_sid **sids, int *num)
-{
- TDB_DATA kbuf, dbuf;
- const char *p;
-
- char * key = talloc_asprintf(tdb, "%s%s", MEMBEROF_PREFIX, dom_sid_string(tdb, member));
-
- 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))) {
-
- struct dom_sid alias;
-
- if (!string_to_sid(&alias, string_sid))
- continue;
-
- add_sid_to_array_unique(NULL, &alias, sids, num);
-
- if (sids == NULL)
- return NT_STATUS_NO_MEMORY;
- }
-
- SAFE_FREE(dbuf.dptr);
- return NT_STATUS_OK;
-}
-
-static NTSTATUS alias_memberships(TDB_CONTEXT *tdb, const struct dom_sid *members, int num_members,
- struct dom_sid **sids, int *num)
-{
- int i;
-
- *num = 0;
- *sids = NULL;
-
- for (i=0; i<num_members; i++) {
- NTSTATUS status = one_alias_membership(tdb, &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;
- 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))) {
-
- struct 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(NULL, &member, closure->sids, closure->num);
}
- return 0;
-}
-
-static NTSTATUS enum_aliasmem(TDB_CONTEXT *tdb, const struct dom_sid *alias, struct dom_sid **sids, int *num)
-{
- struct samba3_groupmapping map;
- struct aliasmem_closure closure;
-
- 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;
+ tdb_close(tdb);
- closure.alias = alias;
- closure.sids = sids;
- closure.num = num;
-
- tdb_traverse(tdb, collect_aliasmem, &closure);
return NT_STATUS_OK;
}
-
-/*
- *
- * 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 */
-
-/* get a local (alias) group from it's SID */
-
-static BOOL get_local_group_from_sid(TDB_CONTEXT *tdb, struct dom_sid *sid, struct samba3_groupmapping *map)
-{
- BOOL ret;
-
- /* The group is in the mapping table */
- ret = pdb_getgrsid(map, *sid);
-
- 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_t 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;
-}
git.samba.org / kai / samba.git / commitdiff