*/
#include "includes.h"
+#include "system/filesys.h"
+#include "passdb.h"
#include "groupdb/mapping.h"
+#include "dbwrap.h"
+#include "util_tdb.h"
+#include "../libcli/security/security.h"
-static TDB_CONTEXT *tdb; /* used for driver files */
+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);
-static bool enum_group_mapping(const DOM_SID *domsid, enum lsa_SidType sid_name_use, GROUP_MAP **pp_rmap,
- size_t *p_num_entries, bool unix_only);
-static bool group_map_remove(const DOM_SID *sid);
-
/****************************************************************************
Open the group mapping tdb.
****************************************************************************/
static bool init_group_mapping(void)
{
- const char *vstring = "INFO/version";
- int32 vers_id;
- GROUP_MAP *map_table = NULL;
- size_t num_entries = 0;
-
- if (tdb)
- return True;
-
- tdb = tdb_open_log(state_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;
- }
+ const char *ldb_path;
- /* 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 (db != NULL) {
+ return true;
}
- /* if its an unknown version we remove everthing in the db */
-
- if (vers_id != DATABASE_VERSION_V2) {
- tdb_traverse(tdb, tdb_traverse_delete_fn, NULL);
- tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2);
+ db = db_open(NULL, state_path("group_mapping.tdb"), 0,
+ TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
+ if (db == NULL) {
+ DEBUG(0, ("Failed to open group mapping database: %s\n",
+ strerror(errno)));
+ return false;
}
- tdb_unlock_bystring(tdb, vstring);
+ ldb_path = state_path("group_mapping.ldb");
+ if (file_exist(ldb_path) && !mapping_switch(ldb_path)) {
+ unlink(state_path("group_mapping.tdb"));
+ 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;
+ }
- /* 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; i<num_entries; i++ ) {
- if ( map_table[i].gid == -1 ) {
- group_map_remove( &map_table[i].sid );
+ /* if its an unknown version we remove everthing 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; i<num_entries; i++ ) {
+ if ( map_table[i].gid == -1 ) {
+ group_map_remove( &map_table[i].sid );
+ }
}
+
+ SAFE_FREE( map_table );
}
-
- SAFE_FREE( map_table );
+#endif
}
+ return true;
+}
+static char *group_mapping_key(TALLOC_CTX *mem_ctx, const struct dom_sid *sid)
+{
+ char *sidstr, *result;
- return True;
+ sidstr = sid_string_talloc(talloc_tos(), sid);
+ if (sidstr == NULL) {
+ return NULL;
+ }
+
+ result = talloc_asprintf(mem_ctx, "%s%s", GROUP_PREFIX, sidstr);
+
+ TALLOC_FREE(sidstr);
+ return result;
}
/****************************************************************************
****************************************************************************/
static bool add_mapping_entry(GROUP_MAP *map, int flag)
{
- TDB_DATA dbuf;
- pstring key, buf;
- fstring string_sid="";
+ char *key, *buf;
int len;
+ NTSTATUS status;
- sid_to_string(string_sid, &map->sid);
+ key = group_mapping_key(talloc_tos(), &map->sid);
+ if (key == NULL) {
+ return false;
+ }
- len = tdb_pack((uint8 *)buf, sizeof(buf), "ddff",
- map->gid, map->sid_name_use, map->nt_name, map->comment);
+ len = tdb_pack(NULL, 0, "ddff",
+ map->gid, map->sid_name_use, map->nt_name, map->comment);
- if (len > sizeof(buf))
- return False;
+ buf = talloc_array(key, char, len);
+ if (!buf) {
+ TALLOC_FREE(key);
+ return false;
+ }
+ len = tdb_pack((uint8 *)buf, len, "ddff", map->gid,
+ map->sid_name_use, map->nt_name, map->comment);
- slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
+ status = dbwrap_trans_store(
+ db, string_term_tdb_data(key),
+ make_tdb_data((uint8_t *)buf, len), TDB_REPLACE);
- dbuf.dsize = len;
- dbuf.dptr = (uint8 *)buf;
- if (tdb_store_bystring(tdb, key, dbuf, flag) != 0) return False;
+ TALLOC_FREE(key);
- return True;
+ return NT_STATUS_IS_OK(status);
}
Return the sid and the type of the unix group.
****************************************************************************/
-static bool get_group_map_from_sid(DOM_SID sid, GROUP_MAP *map)
+static bool get_group_map_from_sid(struct dom_sid sid, GROUP_MAP *map)
{
TDB_DATA dbuf;
- pstring key;
- fstring string_sid;
+ char *key;
int ret = 0;
-
+
/* the key is the SID, retrieving is direct */
- sid_to_string(string_sid, &sid);
- slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
+ key = group_mapping_key(talloc_tos(), &sid);
+ if (key == NULL) {
+ return false;
+ }
- dbuf = tdb_fetch_bystring(tdb, key);
- if (!dbuf.dptr)
- return False;
+ dbuf = dbwrap_fetch_bystring(db, key, key);
+ if (dbuf.dptr == NULL) {
+ TALLOC_FREE(key);
+ return false;
+ }
ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddff",
- &map->gid, &map->sid_name_use, &map->nt_name, &map->comment);
+ &map->gid, &map->sid_name_use,
+ &map->nt_name, &map->comment);
+
+ TALLOC_FREE(key);
- SAFE_FREE(dbuf.dptr);
-
if ( ret == -1 ) {
DEBUG(3,("get_group_map_from_sid: tdb_unpack failure\n"));
- return False;
+ return false;
}
sid_copy(&map->sid, &sid);
-
- return True;
-}
-/****************************************************************************
- Return the sid and the type of the unix group.
-****************************************************************************/
+ return true;
+}
-static bool get_group_map_from_gid(gid_t gid, GROUP_MAP *map)
+static bool dbrec2map(const struct db_record *rec, GROUP_MAP *map)
{
- TDB_DATA kbuf, dbuf, newkey;
- fstring string_sid;
- int ret;
-
- /* we need to enumerate the TDB to find the GID */
+ if ((rec->key.dsize < strlen(GROUP_PREFIX))
+ || (strncmp((char *)rec->key.dptr, GROUP_PREFIX,
+ GROUP_PREFIX_LEN) != 0)) {
+ return False;
+ }
- for (kbuf = tdb_firstkey(tdb);
- kbuf.dptr;
- newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
+ if (!string_to_sid(&map->sid, (const char *)rec->key.dptr
+ + GROUP_PREFIX_LEN)) {
+ return False;
+ }
- if (strncmp((const char *)kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
-
- dbuf = tdb_fetch(tdb, kbuf);
- if (!dbuf.dptr)
- continue;
+ return tdb_unpack(rec->value.dptr, rec->value.dsize, "ddff",
+ &map->gid, &map->sid_name_use, &map->nt_name,
+ &map->comment) != -1;
+}
- fstrcpy(string_sid, (const char *)kbuf.dptr+strlen(GROUP_PREFIX));
+struct find_map_state {
+ bool found;
+ const char *name; /* If != NULL, look for name */
+ gid_t gid; /* valid iff name == NULL */
+ GROUP_MAP *map;
+};
- 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);
+static int find_map(struct db_record *rec, void *private_data)
+{
+ struct find_map_state *state = (struct find_map_state *)private_data;
- SAFE_FREE(dbuf.dptr);
+ if (!dbrec2map(rec, state->map)) {
+ DEBUG(10, ("failed to unpack map\n"));
+ return 0;
+ }
- if ( ret == -1 ) {
- DEBUG(3,("get_group_map_from_gid: tdb_unpack failure\n"));
- return False;
+ if (state->name != NULL) {
+ if (strequal(state->name, state->map->nt_name)) {
+ state->found = true;
+ return 1;
}
-
- if (gid==map->gid) {
- SAFE_FREE(kbuf.dptr);
- return True;
+ }
+ else {
+ if (state->map->gid == state->gid) {
+ state->found = true;
+ return 1;
}
}
- return False;
+ return 0;
}
/****************************************************************************
Return the sid and the type of the unix group.
****************************************************************************/
-static bool get_group_map_from_ntname(const char *name, GROUP_MAP *map)
+static bool get_group_map_from_gid(gid_t gid, GROUP_MAP *map)
{
- TDB_DATA kbuf, dbuf, newkey;
- fstring string_sid;
- int ret;
+ struct find_map_state state;
- /* we need to enumerate the TDB to find the name */
+ state.found = false;
+ state.name = NULL; /* Indicate we're looking for gid */
+ state.gid = gid;
+ state.map = map;
- for (kbuf = tdb_firstkey(tdb);
- kbuf.dptr;
- newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
+ db->traverse_read(db, find_map, (void *)&state);
- if (strncmp((const char *)kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
-
- dbuf = tdb_fetch(tdb, kbuf);
- if (!dbuf.dptr)
- continue;
+ return state.found;
+}
- fstrcpy(string_sid, (const char *)kbuf.dptr+strlen(GROUP_PREFIX));
+/****************************************************************************
+ Return the sid and the type of the unix group.
+****************************************************************************/
- 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);
+static bool get_group_map_from_ntname(const char *name, GROUP_MAP *map)
+{
+ struct find_map_state state;
- SAFE_FREE(dbuf.dptr);
-
- if ( ret == -1 ) {
- DEBUG(3,("get_group_map_from_ntname: tdb_unpack failure\n"));
- return False;
- }
+ state.found = false;
+ state.name = name;
+ state.map = map;
- if ( strequal(name, map->nt_name) ) {
- SAFE_FREE(kbuf.dptr);
- return True;
- }
- }
+ db->traverse_read(db, find_map, (void *)&state);
- return False;
+ return state.found;
}
/****************************************************************************
Remove a group mapping entry.
****************************************************************************/
-static bool group_map_remove(const DOM_SID *sid)
+static bool group_map_remove(const struct dom_sid *sid)
{
- TDB_DATA dbuf;
- pstring key;
- fstring string_sid;
-
- /* the key is the SID, retrieving is direct */
+ char *key;
+ NTSTATUS status;
- sid_to_string(string_sid, sid);
- slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
+ key = group_mapping_key(talloc_tos(), sid);
+ if (key == NULL) {
+ return false;
+ }
- dbuf = tdb_fetch_bystring(tdb, key);
- if (!dbuf.dptr)
- return False;
-
- SAFE_FREE(dbuf.dptr);
+ status = dbwrap_trans_delete(db, string_term_tdb_data(key));
- if(tdb_delete_bystring(tdb, key) != TDB_SUCCESS)
- return False;
-
- return True;
+ TALLOC_FREE(key);
+ return NT_STATUS_IS_OK(status);
}
/****************************************************************************
Enumerate the group mapping.
****************************************************************************/
-static bool enum_group_mapping(const DOM_SID *domsid, enum lsa_SidType sid_name_use, GROUP_MAP **pp_rmap,
- size_t *p_num_entries, bool unix_only)
-{
- TDB_DATA kbuf, dbuf, newkey;
- fstring string_sid;
- GROUP_MAP map;
- GROUP_MAP *mapt;
- int ret;
- size_t entries=0;
- DOM_SID grpsid;
- uint32 rid;
-
- *p_num_entries=0;
- *pp_rmap=NULL;
+struct enum_map_state {
+ const struct dom_sid *domsid;
+ enum lsa_SidType sid_name_use;
+ bool unix_only;
- for (kbuf = tdb_firstkey(tdb);
- kbuf.dptr;
- newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
-
- if (strncmp((const char *)kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0)
- continue;
-
- dbuf = tdb_fetch(tdb, kbuf);
- if (!dbuf.dptr)
- continue;
-
- fstrcpy(string_sid, (const char *)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;
- }
+ size_t num_maps;
+ GROUP_MAP *maps;
+};
- string_to_sid(&grpsid, string_sid);
- sid_copy( &map.sid, &grpsid );
-
- sid_split_rid( &grpsid, &rid );
+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;
- /* Only check the domain if we were given one */
+ if (!dbrec2map(rec, &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));
+ return 0;
+ }
- if ( domsid && !sid_equal( domsid, &grpsid ) ) {
- DEBUG(11,("enum_group_mapping: group %s is not in domain %s\n",
- string_sid, sid_string_static(domsid)));
- continue;
- }
+ if ((state->unix_only == ENUM_ONLY_MAPPED) && (map.gid == -1)) {
+ DEBUG(11,("enum_group_mapping: group %s is non mapped\n",
+ map.nt_name));
+ return 0;
+ }
- DEBUG(11,("enum_group_mapping: returning group %s of "
- "type %s\n", map.nt_name,
- sid_type_lookup(map.sid_name_use)));
+ if ((state->domsid != NULL) &&
+ (dom_sid_compare_domain(state->domsid, &map.sid) != 0)) {
+ DEBUG(11,("enum_group_mapping: group %s is not in domain\n",
+ sid_string_dbg(&map.sid)));
+ return 0;
+ }
- (*pp_rmap) = SMB_REALLOC_ARRAY((*pp_rmap), GROUP_MAP, entries+1);
- if (!(*pp_rmap)) {
- DEBUG(0,("enum_group_mapping: Unable to enlarge group map!\n"));
- return False;
- }
+ if (!(tmp = SMB_REALLOC_ARRAY(state->maps, GROUP_MAP,
+ state->num_maps+1))) {
+ DEBUG(0,("enum_group_mapping: Unable to enlarge group "
+ "map!\n"));
+ return 1;
+ }
- mapt = (*pp_rmap);
+ state->maps = tmp;
+ state->maps[state->num_maps] = map;
+ state->num_maps++;
+ return 0;
+}
- 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);
+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;
- entries++;
+ state.domsid = domsid;
+ state.sid_name_use = sid_name_use;
+ state.unix_only = unix_only;
+ state.num_maps = 0;
+ state.maps = NULL;
+ if (db->traverse_read(db, collect_map, (void *)&state) < 0) {
+ return false;
}
- *p_num_entries=entries;
+ *pp_rmap = state.maps;
+ *p_num_entries = state.num_maps;
- return True;
+ 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 DOM_SID *member,
- DOM_SID **sids, size_t *num)
+static NTSTATUS one_alias_membership(const struct dom_sid *member,
+ struct dom_sid **sids, size_t *num)
{
- fstring key, string_sid;
+ fstring tmp;
+ fstring key;
+ char *string_sid;
TDB_DATA dbuf;
const char *p;
+ NTSTATUS status = NT_STATUS_OK;
+ TALLOC_CTX *frame = talloc_stackframe();
- sid_to_string(string_sid, member);
- slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, string_sid);
-
- dbuf = tdb_fetch_bystring(tdb, key);
+ slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX,
+ sid_to_fstring(tmp, member));
+ dbuf = dbwrap_fetch_bystring(db, frame, key);
if (dbuf.dptr == NULL) {
+ TALLOC_FREE(frame);
return NT_STATUS_OK;
}
p = (const char *)dbuf.dptr;
- while (next_token(&p, string_sid, " ", sizeof(string_sid))) {
-
- DOM_SID alias;
+ while (next_token_talloc(frame, &p, &string_sid, " ")) {
+ struct dom_sid alias;
+ uint32_t num_sids;
if (!string_to_sid(&alias, string_sid))
continue;
- if (!add_sid_to_array_unique(NULL, &alias, sids, num)) {
- return NT_STATUS_NO_MEMORY;
+ 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;
}
- SAFE_FREE(dbuf.dptr);
- return NT_STATUS_OK;
+done:
+ TALLOC_FREE(frame);
+ return status;
}
-static NTSTATUS alias_memberships(const DOM_SID *members, size_t num_members,
- DOM_SID **sids, size_t *num)
+static NTSTATUS alias_memberships(const struct dom_sid *members, size_t num_members,
+ struct dom_sid **sids, size_t *num)
{
size_t i;
return NT_STATUS_OK;
}
-static bool is_aliasmem(const DOM_SID *alias, const DOM_SID *member)
+static bool is_aliasmem(const struct dom_sid *alias, const struct dom_sid *member)
{
- DOM_SID *sids;
- size_t i, num;
+ struct dom_sid *sids;
+ size_t i;
+ size_t num;
/* This feels the wrong way round, but the on-disk data structure
* dictates it this way. */
return False;
for (i=0; i<num; i++) {
- if (sid_compare(alias, &sids[i]) == 0) {
+ if (dom_sid_compare(alias, &sids[i]) == 0) {
TALLOC_FREE(sids);
return True;
}
}
-static NTSTATUS add_aliasmem(const DOM_SID *alias, const DOM_SID *member)
+static NTSTATUS add_aliasmem(const struct dom_sid *alias, const struct dom_sid *member)
{
GROUP_MAP map;
- TDB_DATA dbuf;
- pstring key;
+ char *key;
fstring string_sid;
char *new_memberstring;
- int result;
+ struct db_record *rec;
+ NTSTATUS status;
if (!get_group_map_from_sid(*alias, &map))
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);
+ sid_to_fstring(string_sid, member);
+
+ key = talloc_asprintf(talloc_tos(), "%s%s", MEMBEROF_PREFIX,
+ string_sid);
+ if (key == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (db->transaction_start(db) != 0) {
+ DEBUG(0, ("transaction_start failed\n"));
+ return NT_STATUS_INTERNAL_DB_CORRUPTION;
+ }
+
+ rec = db->fetch_locked(db, key, string_term_tdb_data(key));
- dbuf = tdb_fetch_bystring(tdb, key);
+ if (rec == NULL) {
+ DEBUG(10, ("fetch_lock failed\n"));
+ TALLOC_FREE(key);
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ goto cancel;
+ }
- sid_to_string(string_sid, alias);
+ sid_to_fstring(string_sid, alias);
- if (dbuf.dptr != NULL) {
- asprintf(&new_memberstring, "%s %s", (char *)(dbuf.dptr),
- string_sid);
+ if (rec->value.dptr != NULL) {
+ new_memberstring = talloc_asprintf(
+ key, "%s %s", (char *)(rec->value.dptr), string_sid);
} else {
- new_memberstring = SMB_STRDUP(string_sid);
+ new_memberstring = talloc_strdup(key, string_sid);
}
- if (new_memberstring == NULL)
- return NT_STATUS_NO_MEMORY;
+ if (new_memberstring == NULL) {
+ TALLOC_FREE(key);
+ status = NT_STATUS_NO_MEMORY;
+ goto cancel;
+ }
- SAFE_FREE(dbuf.dptr);
- dbuf = string_term_tdb_data(new_memberstring);
+ status = rec->store(rec, string_term_tdb_data(new_memberstring), 0);
- result = tdb_store_bystring(tdb, key, dbuf, 0);
+ TALLOC_FREE(key);
- SAFE_FREE(new_memberstring);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("Could not store record: %s\n", nt_errstr(status)));
+ goto cancel;
+ }
+
+ if (db->transaction_commit(db) != 0) {
+ DEBUG(0, ("transaction_commit failed\n"));
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ return status;
+ }
- return (result == 0 ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED);
+ return NT_STATUS_OK;
+
+ cancel:
+ if (db->transaction_cancel(db) != 0) {
+ smb_panic("transaction_cancel failed");
+ }
+
+ return status;
}
-struct aliasmem_closure {
- const DOM_SID *alias;
- DOM_SID **sids;
+struct aliasmem_state {
+ TALLOC_CTX *mem_ctx;
+ const struct dom_sid *alias;
+ struct dom_sid **sids;
size_t *num;
};
-static int collect_aliasmem(TDB_CONTEXT *tdb_ctx, TDB_DATA key, TDB_DATA data,
- void *state)
+static int collect_aliasmem(struct db_record *rec, void *priv)
{
- struct aliasmem_closure *closure = (struct aliasmem_closure *)state;
+ struct aliasmem_state *state = (struct aliasmem_state *)priv;
const char *p;
- fstring alias_string;
+ char *alias_string;
+ TALLOC_CTX *frame;
- if (strncmp((const char *)key.dptr, MEMBEROF_PREFIX,
- strlen(MEMBEROF_PREFIX)) != 0)
+ if (strncmp((const char *)rec->key.dptr, MEMBEROF_PREFIX,
+ MEMBEROF_PREFIX_LEN) != 0)
return 0;
- p = (const char *)data.dptr;
+ p = (const char *)rec->value.dptr;
- while (next_token(&p, alias_string, " ", sizeof(alias_string))) {
+ frame = talloc_stackframe();
- DOM_SID alias, member;
+ 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 (sid_compare(closure->alias, &alias) != 0)
+ 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, '/');
+ member_string = strchr((const char *)rec->key.dptr, '/');
/* Above we tested for MEMBEROF_PREFIX which includes the
* slash. */
if (!string_to_sid(&member, member_string))
continue;
-
- if (!add_sid_to_array(NULL, &member, closure->sids, closure->num)) {
+
+ 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 DOM_SID *alias, DOM_SID **sids, size_t *num)
+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_closure closure;
+ struct aliasmem_state state;
if (!get_group_map_from_sid(*alias, &map))
return NT_STATUS_NO_SUCH_ALIAS;
*sids = NULL;
*num = 0;
- closure.alias = alias;
- closure.sids = sids;
- closure.num = num;
+ state.alias = alias;
+ state.sids = sids;
+ state.num = num;
+ state.mem_ctx = mem_ctx;
- tdb_traverse(tdb, collect_aliasmem, &closure);
+ db->traverse_read(db, collect_aliasmem, &state);
return NT_STATUS_OK;
}
-static NTSTATUS del_aliasmem(const DOM_SID *alias, const DOM_SID *member)
+static NTSTATUS del_aliasmem(const struct dom_sid *alias, const struct dom_sid *member)
{
- NTSTATUS result;
- DOM_SID *sids;
+ NTSTATUS status;
+ struct dom_sid *sids;
size_t i, num;
bool found = False;
char *member_string;
- TDB_DATA dbuf;
- pstring key;
+ char *key;
fstring sid_string;
- result = alias_memberships(member, 1, &sids, &num);
+ if (db->transaction_start(db) != 0) {
+ DEBUG(0, ("transaction_start failed\n"));
+ return NT_STATUS_INTERNAL_DB_CORRUPTION;
+ }
- if (!NT_STATUS_IS_OK(result))
- return result;
+ status = alias_memberships(member, 1, &sids, &num);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ goto cancel;
+ }
for (i=0; i<num; i++) {
- if (sid_compare(&sids[i], alias) == 0) {
+ if (dom_sid_compare(&sids[i], alias) == 0) {
found = True;
break;
}
if (!found) {
TALLOC_FREE(sids);
- return NT_STATUS_MEMBER_NOT_IN_ALIAS;
+ status = NT_STATUS_MEMBER_NOT_IN_ALIAS;
+ goto cancel;
}
if (i < num)
num -= 1;
- sid_to_string(sid_string, member);
- slprintf(key, sizeof(key), "%s%s", MEMBEROF_PREFIX, sid_string);
+ sid_to_fstring(sid_string, member);
- if (num == 0)
- return tdb_delete_bystring(tdb, key) == 0 ?
- NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
+ key = talloc_asprintf(sids, "%s%s", MEMBEROF_PREFIX, sid_string);
+ if (key == NULL) {
+ TALLOC_FREE(sids);
+ status = NT_STATUS_NO_MEMORY;
+ goto cancel;
+ }
- member_string = SMB_STRDUP("");
+ if (num == 0) {
+ status = dbwrap_delete_bystring(db, key);
+ goto commit;
+ }
+ member_string = talloc_strdup(sids, "");
if (member_string == NULL) {
TALLOC_FREE(sids);
- return NT_STATUS_NO_MEMORY;
+ status = NT_STATUS_NO_MEMORY;
+ goto cancel;
}
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);
+ sid_to_fstring(sid_string, &sids[i]);
+
+ member_string = talloc_asprintf_append_buffer(
+ member_string, " %s", sid_string);
- SAFE_FREE(s);
if (member_string == NULL) {
TALLOC_FREE(sids);
- return NT_STATUS_NO_MEMORY;
+ status = NT_STATUS_NO_MEMORY;
+ goto cancel;
}
}
- dbuf = string_term_tdb_data(member_string);
+ status = dbwrap_store_bystring(
+ db, key, string_term_tdb_data(member_string), 0);
+ commit:
+ TALLOC_FREE(sids);
- result = tdb_store_bystring(tdb, key, dbuf, 0) == 0 ?
- NT_STATUS_OK : NT_STATUS_ACCESS_DENIED;
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("dbwrap_store_bystring failed: %s\n",
+ nt_errstr(status)));
+ goto cancel;
+ }
- TALLOC_FREE(sids);
- SAFE_FREE(member_string);
+ if (db->transaction_commit(db) != 0) {
+ DEBUG(0, ("transaction_commit failed\n"));
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ return status;
+ }
- return result;
+ return NT_STATUS_OK;
+
+ cancel:
+ if (db->transaction_cancel(db) != 0) {
+ smb_panic("transaction_cancel failed");
+ }
+ return status;
}
+/* -- ldb->tdb 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;
+ uint8_t *p;
+ uint32_t format;
+ uint32_t num_el;
+ unsigned int remaining;
+ unsigned int i, j;
+ size_t len;
+ char *name;
+ char *val;
+ char *q;
+ uint32_t num_mem = 0;
+ struct dom_sid *members = NULL;
+
+ 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;
+ }
+
+ ZERO_STRUCT(map);
+
+ 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 = strtoul(val, &q, 10);
+ if (*q) {
+ 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 = strtoul(val, &q, 10);
+ if (*q) {
+ errno = EIO;
+ goto failed;
+ }
+ } else if (strcasecmp_m(name, "ntname") == 0) {
+ strlcpy(map.nt_name, val,
+ sizeof(map.nt_name));
+ } else if (strcasecmp_m(name, "comment") == 0) {
+ strlcpy(map.comment, val,
+ sizeof(map.comment));
+ } 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 (!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, ("Errror: %d bytes unread in ltdb_unpack_data\n",
+ remaining));
+ }
+
+ return 0;
+
+failed:
+ 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("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,
git.samba.org / kai / samba.git / blobdiff