#define IDMAP_VERSION 2
+struct idmap_tdb_context {
+ struct db_context *db;
+};
+
/* High water mark keys */
#define HWM_GROUP "GROUP HWM"
#define HWM_USER "USER HWM"
-static struct idmap_tdb_state {
-
- /* User and group id pool */
- uid_t low_uid, high_uid; /* Range of uids to allocate */
- gid_t low_gid, high_gid; /* Range of gids to allocate */
-
-} idmap_tdb_state;
-
struct convert_fn_state {
struct db_context *db;
bool failed;
struct winbindd_domain *domain;
char *p;
NTSTATUS status;
- DOM_SID sid;
+ struct dom_sid sid;
uint32 rid;
fstring keystr;
fstring dom_name;
rid = atoi(p);
- sid_copy(&sid, &domain->sid);
- sid_append_rid(&sid, rid);
+ sid_compose(&sid, &domain->sid, rid);
sid_to_fstring(keystr, &sid);
key2 = string_term_tdb_data(keystr);
Convert the idmap database from an older version.
*****************************************************************************/
-static bool idmap_tdb_upgrade(struct db_context *db)
+static bool idmap_tdb_upgrade(struct idmap_domain *dom, struct db_context *db)
{
int32 vers;
bool bigendianheader;
if (wm != -1) {
wm = IREV(wm);
} else {
- wm = idmap_tdb_state.low_uid;
+ wm = dom->low_id;
}
if (dbwrap_store_int32(db, HWM_USER, wm) == -1) {
if (wm != -1) {
wm = IREV(wm);
} else {
- wm = idmap_tdb_state.low_gid;
+ wm = dom->low_id;
}
if (dbwrap_store_int32(db, HWM_GROUP, wm) == -1) {
}
if (dbwrap_store_int32(db, "IDMAP_VERSION", IDMAP_VERSION) == -1) {
- DEBUG(0, ("Unable to dtore idmap version in databse\n"));
+ DEBUG(0, ("Unable to store idmap version in databse\n"));
return False;
}
return True;
}
-static NTSTATUS idmap_tdb_open_db(TALLOC_CTX *memctx,
- bool check_config,
- struct db_context **dbctx)
+static NTSTATUS idmap_tdb_init_hwm(struct idmap_domain *dom)
{
- NTSTATUS ret;
- TALLOC_CTX *ctx;
- char *tdbfile = NULL;
- struct db_context *db = NULL;
- int32_t version;
- uid_t low_uid = 0;
- uid_t high_uid = 0;
- gid_t low_gid = 0;
- gid_t high_gid = 0;
- bool config_error = false;
+ int ret;
+ uint32_t low_uid;
+ uint32_t low_gid;
+ bool update_uid = false;
+ bool update_gid = false;
+ struct idmap_tdb_context *ctx;
- /* load ranges */
- if (!lp_idmap_uid(&low_uid, &high_uid)
- || !lp_idmap_gid(&low_gid, &high_gid)) {
- DEBUG(1, ("idmap uid or idmap gid missing\n"));
- config_error = true;
- if (check_config) {
- return NT_STATUS_UNSUCCESSFUL;
- }
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+
+ low_uid = dbwrap_fetch_int32(ctx->db, HWM_USER);
+ if (low_uid == -1 || low_uid < dom->low_id) {
+ update_uid = true;
+ }
+
+ low_gid = dbwrap_fetch_int32(ctx->db, HWM_GROUP);
+ if (low_gid == -1 || low_gid < dom->low_id) {
+ update_gid = true;
+ }
+
+ if (!update_uid && !update_gid) {
+ return NT_STATUS_OK;
}
- idmap_tdb_state.low_uid = low_uid;
- idmap_tdb_state.high_uid = high_uid;
- idmap_tdb_state.low_gid = low_gid;
- idmap_tdb_state.high_gid = high_gid;
+ if (ctx->db->transaction_start(ctx->db) != 0) {
+ DEBUG(0, ("Unable to start upgrade transaction!\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
+ }
- if (idmap_tdb_state.high_uid <= idmap_tdb_state.low_uid) {
- DEBUG(1, ("idmap uid range missing or invalid\n"));
- config_error = true;
- if (check_config) {
- return NT_STATUS_UNSUCCESSFUL;
+ if (update_uid) {
+ ret = dbwrap_store_int32(ctx->db, HWM_USER, dom->low_id);
+ if (ret == -1) {
+ ctx->db->transaction_cancel(ctx->db);
+ DEBUG(0, ("Unable to initialise user hwm in idmap "
+ "database\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
}
}
- if (idmap_tdb_state.high_gid <= idmap_tdb_state.low_gid) {
- DEBUG(1, ("idmap gid range missing or invalid\n"));
- config_error = true;
- if (check_config) {
- return NT_STATUS_UNSUCCESSFUL;
+ if (update_gid) {
+ ret = dbwrap_store_int32(ctx->db, HWM_GROUP, dom->low_id);
+ if (ret == -1) {
+ ctx->db->transaction_cancel(ctx->db);
+ DEBUG(0, ("Unable to initialise group hwm in idmap "
+ "database\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
}
}
- /* use our own context here */
- ctx = talloc_new(memctx);
- if (!ctx) {
- DEBUG(0, ("Out of memory!\n"));
- return NT_STATUS_NO_MEMORY;
+ if (ctx->db->transaction_commit(ctx->db) != 0) {
+ DEBUG(0, ("Unable to commit upgrade transaction!\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS idmap_tdb_open_db(struct idmap_domain *dom)
+{
+ NTSTATUS ret;
+ TALLOC_CTX *mem_ctx;
+ char *tdbfile = NULL;
+ struct db_context *db = NULL;
+ int32_t version;
+ bool config_error = false;
+ struct idmap_tdb_context *ctx;
+
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+
+ if (ctx->db) {
+ /* it is already open */
+ return NT_STATUS_OK;
}
+ /* use our own context here */
+ mem_ctx = talloc_stackframe();
+
/* use the old database if present */
- tdbfile = talloc_strdup(ctx, state_path("winbindd_idmap.tdb"));
+ tdbfile = state_path("winbindd_idmap.tdb");
if (!tdbfile) {
DEBUG(0, ("Out of memory!\n"));
ret = NT_STATUS_NO_MEMORY;
DEBUG(10,("Opening tdbfile %s\n", tdbfile ));
/* Open idmap repository */
- db = db_open(ctx, tdbfile, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644);
+ db = db_open(mem_ctx, tdbfile, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644);
if (!db) {
DEBUG(0, ("Unable to open idmap database\n"));
ret = NT_STATUS_UNSUCCESSFUL;
goto done;
}
- if (!idmap_tdb_upgrade(db)) {
+ if (!idmap_tdb_upgrade(dom, db)) {
db->transaction_cancel(db);
- DEBUG(0, ("Unable to open idmap database, it's in an old formati, and upgrade failed!\n"));
+ DEBUG(0, ("Unable to open idmap database, it's in an old format, and upgrade failed!\n"));
ret = NT_STATUS_INTERNAL_DB_ERROR;
goto done;
}
}
}
- *dbctx = talloc_move(memctx, &db);
- ret = NT_STATUS_OK;
+ ctx->db = talloc_move(ctx, &db);
+
+ ret = idmap_tdb_init_hwm(dom);
done:
- talloc_free(ctx);
+ talloc_free(mem_ctx);
return ret;
}
IDMAP ALLOC TDB BACKEND
**********************************************************************/
-static struct db_context *idmap_alloc_db;
-
-/**********************************
- Initialise idmap alloc database.
-**********************************/
-
-static NTSTATUS idmap_tdb_alloc_init( const char *params )
-{
- int ret;
- NTSTATUS status;
- uint32_t low_uid;
- uint32_t low_gid;
- bool update_uid = false;
- bool update_gid = false;
-
- status = idmap_tdb_open_db(NULL, true, &idmap_alloc_db);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("idmap will be unable to map foreign SIDs: %s\n",
- nt_errstr(status)));
- return status;
- }
-
- low_uid = dbwrap_fetch_int32(idmap_alloc_db, HWM_USER);
- if (low_uid == -1 || low_uid < idmap_tdb_state.low_uid) {
- update_uid = true;
- }
-
- low_gid = dbwrap_fetch_int32(idmap_alloc_db, HWM_GROUP);
- if (low_gid == -1 || low_gid < idmap_tdb_state.low_gid) {
- update_gid = true;
- }
-
- if (!update_uid && !update_gid) {
- return NT_STATUS_OK;
- }
-
- if (idmap_alloc_db->transaction_start(idmap_alloc_db) != 0) {
- TALLOC_FREE(idmap_alloc_db);
- DEBUG(0, ("Unable to start upgrade transaction!\n"));
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
-
- if (update_uid) {
- ret = dbwrap_store_int32(idmap_alloc_db, HWM_USER,
- idmap_tdb_state.low_uid);
- if (ret == -1) {
- idmap_alloc_db->transaction_cancel(idmap_alloc_db);
- TALLOC_FREE(idmap_alloc_db);
- DEBUG(0, ("Unable to initialise user hwm in idmap "
- "database\n"));
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
- }
-
- if (update_gid) {
- ret = dbwrap_store_int32(idmap_alloc_db, HWM_GROUP,
- idmap_tdb_state.low_gid);
- if (ret == -1) {
- idmap_alloc_db->transaction_cancel(idmap_alloc_db);
- TALLOC_FREE(idmap_alloc_db);
- DEBUG(0, ("Unable to initialise group hwm in idmap "
- "database\n"));
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
- }
-
- if (idmap_alloc_db->transaction_commit(idmap_alloc_db) != 0) {
- TALLOC_FREE(idmap_alloc_db);
- DEBUG(0, ("Unable to commit upgrade transaction!\n"));
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
-
- return NT_STATUS_OK;
-}
-
/**********************************
Allocate a new id.
**********************************/
-static NTSTATUS idmap_tdb_allocate_id(struct unixid *xid)
-{
- bool ret;
+struct idmap_tdb_allocate_id_context {
const char *hwmkey;
const char *hwmtype;
uint32_t high_hwm;
uint32_t hwm;
+};
- /* Get current high water mark */
- switch (xid->type) {
-
- case ID_TYPE_UID:
- hwmkey = HWM_USER;
- hwmtype = "UID";
- high_hwm = idmap_tdb_state.high_uid;
- break;
-
- case ID_TYPE_GID:
- hwmkey = HWM_GROUP;
- hwmtype = "GID";
- high_hwm = idmap_tdb_state.high_gid;
- break;
+static NTSTATUS idmap_tdb_allocate_id_action(struct db_context *db,
+ void *private_data)
+{
+ NTSTATUS ret;
+ struct idmap_tdb_allocate_id_context *state;
+ uint32_t hwm;
- default:
- DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
- return NT_STATUS_INVALID_PARAMETER;
- }
+ state = (struct idmap_tdb_allocate_id_context *)private_data;
- if ((hwm = dbwrap_fetch_int32(idmap_alloc_db, hwmkey)) == -1) {
- return NT_STATUS_INTERNAL_DB_ERROR;
+ hwm = dbwrap_fetch_int32(db, state->hwmkey);
+ if (hwm == -1) {
+ ret = NT_STATUS_INTERNAL_DB_ERROR;
+ goto done;
}
/* check it is in the range */
- if (hwm > high_hwm) {
- DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
- hwmtype, (unsigned long)high_hwm));
- return NT_STATUS_UNSUCCESSFUL;
+ if (hwm > state->high_hwm) {
+ DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
+ state->hwmtype, (unsigned long)state->high_hwm));
+ ret = NT_STATUS_UNSUCCESSFUL;
+ goto done;
}
/* fetch a new id and increment it */
- ret = dbwrap_change_uint32_atomic(idmap_alloc_db, hwmkey, &hwm, 1);
- if (ret != 0) {
- DEBUG(0, ("Fatal error while fetching a new %s value\n!", hwmtype));
- return NT_STATUS_UNSUCCESSFUL;
+ ret = dbwrap_trans_change_uint32_atomic(db, state->hwmkey, &hwm, 1);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0, ("Fatal error while fetching a new %s value: %s\n!",
+ state->hwmtype, nt_errstr(ret)));
+ goto done;
}
/* recheck it is in the range */
- if (hwm > high_hwm) {
- DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
- hwmtype, (unsigned long)high_hwm));
- return NT_STATUS_UNSUCCESSFUL;
+ if (hwm > state->high_hwm) {
+ DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
+ state->hwmtype, (unsigned long)state->high_hwm));
+ ret = NT_STATUS_UNSUCCESSFUL;
+ goto done;
}
-
- xid->id = hwm;
- DEBUG(10,("New %s = %d\n", hwmtype, hwm));
- return NT_STATUS_OK;
-}
+ ret = NT_STATUS_OK;
+ state->hwm = hwm;
-/**********************************
- Get current highest id.
-**********************************/
+done:
+ return ret;
+}
-static NTSTATUS idmap_tdb_get_hwm(struct unixid *xid)
+static NTSTATUS idmap_tdb_allocate_id(struct idmap_domain *dom,
+ struct unixid *xid)
{
const char *hwmkey;
const char *hwmtype;
- uint32_t hwm;
uint32_t high_hwm;
+ uint32_t hwm = 0;
+ NTSTATUS status;
+ struct idmap_tdb_allocate_id_context state;
+ struct idmap_tdb_context *ctx;
+
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
/* Get current high water mark */
switch (xid->type) {
case ID_TYPE_UID:
hwmkey = HWM_USER;
hwmtype = "UID";
- high_hwm = idmap_tdb_state.high_uid;
break;
case ID_TYPE_GID:
hwmkey = HWM_GROUP;
hwmtype = "GID";
- high_hwm = idmap_tdb_state.high_gid;
break;
default:
+ DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
return NT_STATUS_INVALID_PARAMETER;
}
- if ((hwm = dbwrap_fetch_int32(idmap_alloc_db, hwmkey)) == -1) {
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
+ high_hwm = dom->high_id;
+
+ state.hwm = hwm;
+ state.high_hwm = high_hwm;
+ state.hwmtype = hwmtype;
+ state.hwmkey = hwmkey;
- xid->id = hwm;
+ status = dbwrap_trans_do(ctx->db, idmap_tdb_allocate_id_action,
+ &state);
- /* Warn if it is out of range */
- if (hwm >= high_hwm) {
- DEBUG(0, ("Warning: %s range full!! (max: %lu)\n",
- hwmtype, (unsigned long)high_hwm));
+ if (NT_STATUS_IS_OK(status)) {
+ xid->id = state.hwm;
+ DEBUG(10,("New %s = %d\n", hwmtype, state.hwm));
+ } else {
+ DEBUG(1, ("Error allocating a new %s\n", hwmtype));
}
- return NT_STATUS_OK;
+ return status;
}
-/**********************************
- Set high id.
-**********************************/
-
-static NTSTATUS idmap_tdb_set_hwm(struct unixid *xid)
+/**
+ * Allocate a new unix-ID.
+ * For now this is for the default idmap domain only.
+ * Should be extended later on.
+ */
+static NTSTATUS idmap_tdb_get_new_id(struct idmap_domain *dom,
+ struct unixid *id)
{
- const char *hwmkey;
- const char *hwmtype;
- uint32_t hwm;
- uint32_t high_hwm;
-
- /* Get current high water mark */
- switch (xid->type) {
-
- case ID_TYPE_UID:
- hwmkey = HWM_USER;
- hwmtype = "UID";
- high_hwm = idmap_tdb_state.high_uid;
- break;
-
- case ID_TYPE_GID:
- hwmkey = HWM_GROUP;
- hwmtype = "GID";
- high_hwm = idmap_tdb_state.high_gid;
- break;
-
- default:
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- hwm = xid->id;
-
- if ((hwm = dbwrap_store_uint32(idmap_alloc_db, hwmkey, hwm)) == -1) {
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
+ NTSTATUS ret;
- /* Warn if it is out of range */
- if (hwm >= high_hwm) {
- DEBUG(0, ("Warning: %s range full!! (max: %lu)\n",
- hwmtype, (unsigned long)high_hwm));
+ if (!strequal(dom->name, "*")) {
+ DEBUG(3, ("idmap_tdb_get_new_id: "
+ "Refusing allocation of a new unixid for domain'%s'. "
+ "Currently only supported for the default "
+ "domain \"*\".\n",
+ dom->name));
+ return NT_STATUS_NOT_IMPLEMENTED;
}
- return NT_STATUS_OK;
-}
-
-/**********************************
- Close the alloc tdb
-**********************************/
+ ret = idmap_tdb_allocate_id(dom, id);
-static NTSTATUS idmap_tdb_alloc_close(void)
-{
- TALLOC_FREE(idmap_alloc_db);
- return NT_STATUS_OK;
+ return ret;
}
/**********************************************************************
IDMAP MAPPING TDB BACKEND
**********************************************************************/
-
-struct idmap_tdb_context {
- struct db_context *db;
- uint32_t filter_low_id;
- uint32_t filter_high_id;
-};
/*****************************
Initialise idmap database.
{
NTSTATUS ret;
struct idmap_tdb_context *ctx;
- char *config_option = NULL;
- const char *range;
+
+ DEBUG(10, ("idmap_tdb_db_init called for domain '%s'\n", dom->name));
ctx = talloc(dom, struct idmap_tdb_context);
if ( ! ctx) {
return NT_STATUS_NO_MEMORY;
}
- config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
- if ( ! config_option) {
- DEBUG(0, ("Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto failed;
+ /* load backend specific configuration here: */
+#if 0
+ if (strequal(dom->name, "*")) {
+ } else {
}
+#endif
- ret = idmap_tdb_open_db(ctx, false, &ctx->db);
+ dom->private_data = ctx;
+
+ ret = idmap_tdb_open_db(dom);
if ( ! NT_STATUS_IS_OK(ret)) {
goto failed;
}
- range = lp_parm_const_string(-1, config_option, "range", NULL);
- if (( ! range) ||
- (sscanf(range, "%u - %u", &ctx->filter_low_id, &ctx->filter_high_id) != 2) ||
- (ctx->filter_low_id > ctx->filter_high_id)) {
- ctx->filter_low_id = 0;
- ctx->filter_high_id = 0;
- }
-
- dom->private_data = ctx;
-
- talloc_free(config_option);
return NT_STATUS_OK;
failed:
return ret;
}
-/**********************************
- Single id to sid lookup function.
-**********************************/
-static NTSTATUS idmap_tdb_id_to_sid(struct idmap_tdb_context *ctx, struct id_map *map)
+/**
+ * store a mapping in the database
+ */
+
+struct idmap_tdb_set_mapping_context {
+ const char *ksidstr;
+ const char *kidstr;
+};
+
+static NTSTATUS idmap_tdb_set_mapping_action(struct db_context *db,
+ void *private_data)
{
NTSTATUS ret;
- TDB_DATA data;
- char *keystr;
+ struct idmap_tdb_set_mapping_context *state;
- if (!ctx || !map) {
- return NT_STATUS_INVALID_PARAMETER;
+ state = (struct idmap_tdb_set_mapping_context *)private_data;
+
+ DEBUG(10, ("Storing %s <-> %s map\n", state->ksidstr, state->kidstr));
+
+ ret = dbwrap_store_bystring(db, state->ksidstr,
+ string_term_tdb_data(state->kidstr),
+ TDB_REPLACE);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0, ("Error storing SID -> ID (%s -> %s): %s\n",
+ state->ksidstr, state->kidstr, nt_errstr(ret)));
+ goto done;
}
- /* apply filters before checking */
- if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) ||
- (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) {
- DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
- map->xid.id, ctx->filter_low_id, ctx->filter_high_id));
- return NT_STATUS_NONE_MAPPED;
+ ret = dbwrap_store_bystring(db, state->kidstr,
+ string_term_tdb_data(state->ksidstr),
+ TDB_REPLACE);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0, ("Error storing ID -> SID (%s -> %s): %s\n",
+ state->kidstr, state->ksidstr, nt_errstr(ret)));
+ goto done;
}
- switch (map->xid.type) {
+ DEBUG(10,("Stored %s <-> %s\n", state->ksidstr, state->kidstr));
+ ret = NT_STATUS_OK;
- case ID_TYPE_UID:
- keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
- break;
-
- case ID_TYPE_GID:
- keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
- break;
+done:
+ return ret;
+}
- default:
- DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
+static NTSTATUS idmap_tdb_set_mapping(struct idmap_domain *dom,
+ const struct id_map *map)
+{
+ struct idmap_tdb_context *ctx;
+ NTSTATUS ret;
+ char *ksidstr, *kidstr;
+ struct idmap_tdb_set_mapping_context state;
+
+ if (!map || !map->sid) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ ksidstr = kidstr = NULL;
+
+ /* TODO: should we filter a set_mapping using low/high filters ? */
+
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+
+ switch (map->xid.type) {
+
+ case ID_TYPE_UID:
+ kidstr = talloc_asprintf(ctx, "UID %lu",
+ (unsigned long)map->xid.id);
+ break;
+
+ case ID_TYPE_GID:
+ kidstr = talloc_asprintf(ctx, "GID %lu",
+ (unsigned long)map->xid.id);
+ break;
+
+ default:
+ DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (kidstr == NULL) {
+ DEBUG(0, ("ERROR: Out of memory!\n"));
+ ret = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ ksidstr = sid_string_talloc(ctx, map->sid);
+ if (ksidstr == NULL) {
+ DEBUG(0, ("Out of memory!\n"));
+ ret = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ state.ksidstr = ksidstr;
+ state.kidstr = kidstr;
+
+ ret = dbwrap_trans_do(ctx->db, idmap_tdb_set_mapping_action, &state);
+
+done:
+ talloc_free(ksidstr);
+ talloc_free(kidstr);
+ return ret;
+}
+
+/**
+ * Create a new mapping for an unmapped SID, also allocating a new ID.
+ * This should be run inside a transaction.
+ *
+ * TODO:
+ * Properly integrate this with multi domain idmap config:
+ * Currently, the allocator is default-config only.
+ */
+static NTSTATUS idmap_tdb_new_mapping(struct idmap_domain *dom, struct id_map *map)
+{
+ NTSTATUS ret;
+
+ if (map == NULL) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ if ((map->xid.type != ID_TYPE_UID) && (map->xid.type != ID_TYPE_GID)) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ if (map->sid == NULL) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ ret = idmap_tdb_get_new_id(dom, &map->xid);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(3, ("Could not allocate id: %s\n", nt_errstr(ret)));
+ goto done;
+ }
+
+ DEBUG(10, ("Setting mapping: %s <-> %s %lu\n",
+ sid_string_dbg(map->sid),
+ (map->xid.type == ID_TYPE_UID) ? "UID" : "GID",
+ (unsigned long)map->xid.id));
+
+ map->status = ID_MAPPED;
+
+ /* store the mapping */
+ ret = idmap_tdb_set_mapping(dom, map);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(3, ("Could not store the new mapping: %s\n",
+ nt_errstr(ret)));
+ }
+
+done:
+ return ret;
+}
+
+
+/**********************************
+ Single id to sid lookup function.
+**********************************/
+
+static NTSTATUS idmap_tdb_id_to_sid(struct idmap_domain *dom, struct id_map *map)
+{
+ NTSTATUS ret;
+ TDB_DATA data;
+ char *keystr;
+ struct idmap_tdb_context *ctx;
+
+ if (!dom || !map) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+
+ /* apply filters before checking */
+ if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
+ DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
+ map->xid.id, dom->low_id, dom->high_id));
+ return NT_STATUS_NONE_MAPPED;
+ }
+
+ switch (map->xid.type) {
+
+ case ID_TYPE_UID:
+ keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
+ break;
+
+ case ID_TYPE_GID:
+ keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
+ break;
+
+ default:
+ DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
return NT_STATUS_INVALID_PARAMETER;
}
Single sid to id lookup function.
**********************************/
-static NTSTATUS idmap_tdb_sid_to_id(struct idmap_tdb_context *ctx, struct id_map *map)
+static NTSTATUS idmap_tdb_sid_to_id(struct idmap_domain *dom, struct id_map *map)
{
NTSTATUS ret;
TDB_DATA data;
char *keystr;
unsigned long rec_id = 0;
- fstring tmp;
+ struct idmap_tdb_context *ctx;
+ TALLOC_CTX *tmp_ctx = talloc_stackframe();
- if ((keystr = talloc_asprintf(
- ctx, "%s", sid_to_fstring(tmp, map->sid))) == NULL) {
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+
+ keystr = sid_string_talloc(tmp_ctx, map->sid);
+ if (keystr == NULL) {
DEBUG(0, ("Out of memory!\n"));
ret = NT_STATUS_NO_MEMORY;
goto done;
DEBUG(10,("Fetching record %s\n", keystr));
/* Check if sid is present in database */
- data = dbwrap_fetch_bystring(ctx->db, NULL, keystr);
+ data = dbwrap_fetch_bystring(ctx->db, tmp_ctx, keystr);
if (!data.dptr) {
DEBUG(10,("Record %s not found\n", keystr));
ret = NT_STATUS_NONE_MAPPED;
} else { /* Unknown record type ! */
DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr));
ret = NT_STATUS_INTERNAL_DB_ERROR;
+ goto done;
}
-
- TALLOC_FREE(data.dptr);
/* apply filters before returning result */
- if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) ||
- (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) {
+ if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
- map->xid.id, ctx->filter_low_id, ctx->filter_high_id));
+ map->xid.id, dom->low_id, dom->high_id));
ret = NT_STATUS_NONE_MAPPED;
}
done:
- talloc_free(keystr);
+ talloc_free(tmp_ctx);
return ret;
}
NTSTATUS ret;
int i;
+ /* initialize the status to avoid suprise */
+ for (i = 0; ids[i]; i++) {
+ ids[i]->status = ID_UNKNOWN;
+ }
+
ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
for (i = 0; ids[i]; i++) {
- ret = idmap_tdb_id_to_sid(ctx, ids[i]);
+ ret = idmap_tdb_id_to_sid(dom, ids[i]);
if ( ! NT_STATUS_IS_OK(ret)) {
/* if it is just a failed mapping continue */
lookup a set of sids.
**********************************/
-static NTSTATUS idmap_tdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
+struct idmap_tdb_sids_to_unixids_context {
+ struct idmap_domain *dom;
+ struct id_map **ids;
+ bool allocate_unmapped;
+};
+
+static NTSTATUS idmap_tdb_sids_to_unixids_action(struct db_context *db,
+ void *private_data)
{
- struct idmap_tdb_context *ctx;
- NTSTATUS ret;
+ struct idmap_tdb_sids_to_unixids_context *state;
int i;
+ NTSTATUS ret;
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- for (i = 0; ids[i]; i++) {
- ret = idmap_tdb_sid_to_id(ctx, ids[i]);
- if ( ! NT_STATUS_IS_OK(ret)) {
-
- /* if it is just a failed mapping continue */
- if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
-
- /* make sure it is marked as unmapped */
- ids[i]->status = ID_UNMAPPED;
- continue;
+ state = (struct idmap_tdb_sids_to_unixids_context *)private_data;
+
+ DEBUG(10, ("idmap_tdb_sids_to_unixids_action: "
+ " domain: [%s], allocate: %s\n",
+ state->dom->name,
+ state->allocate_unmapped ? "yes" : "no"));
+
+ for (i = 0; state->ids[i]; i++) {
+ if ((state->ids[i]->status == ID_UNKNOWN) ||
+ /* retry if we could not map in previous run: */
+ (state->ids[i]->status == ID_UNMAPPED))
+ {
+ NTSTATUS ret2;
+
+ ret2 = idmap_tdb_sid_to_id(state->dom, state->ids[i]);
+ if (!NT_STATUS_IS_OK(ret2)) {
+
+ /* if it is just a failed mapping, continue */
+ if (NT_STATUS_EQUAL(ret2, NT_STATUS_NONE_MAPPED)) {
+
+ /* make sure it is marked as unmapped */
+ state->ids[i]->status = ID_UNMAPPED;
+ ret = STATUS_SOME_UNMAPPED;
+ } else {
+ /* some fatal error occurred, return immediately */
+ ret = ret2;
+ goto done;
+ }
+ } else {
+ /* all ok, id is mapped */
+ state->ids[i]->status = ID_MAPPED;
}
-
- /* some fatal error occurred, return immediately */
- goto done;
}
- /* all ok, id is mapped */
- ids[i]->status = ID_MAPPED;
+ if ((state->ids[i]->status == ID_UNMAPPED) &&
+ state->allocate_unmapped)
+ {
+ ret = idmap_tdb_new_mapping(state->dom, state->ids[i]);
+ if (!NT_STATUS_IS_OK(ret)) {
+ goto done;
+ }
+ }
}
- ret = NT_STATUS_OK;
-
done:
return ret;
}
-/**********************************
- set a mapping.
-**********************************/
-
-static NTSTATUS idmap_tdb_set_mapping(struct idmap_domain *dom,
- const struct id_map *map)
+static NTSTATUS idmap_tdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
{
struct idmap_tdb_context *ctx;
NTSTATUS ret;
- TDB_DATA ksid, kid;
- char *ksidstr, *kidstr;
- fstring tmp;
+ int i;
+ struct idmap_tdb_sids_to_unixids_context state;
- if (!map || !map->sid) {
- return NT_STATUS_INVALID_PARAMETER;
+ /* initialize the status to avoid suprise */
+ for (i = 0; ids[i]; i++) {
+ ids[i]->status = ID_UNKNOWN;
}
-
- ksidstr = kidstr = NULL;
-
- /* TODO: should we filter a set_mapping using low/high filters ? */
-
+
ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
- switch (map->xid.type) {
+ state.dom = dom;
+ state.ids = ids;
+ state.allocate_unmapped = false;
- case ID_TYPE_UID:
- kidstr = talloc_asprintf(ctx, "UID %lu",
- (unsigned long)map->xid.id);
- break;
+ ret = idmap_tdb_sids_to_unixids_action(ctx->db, &state);
- case ID_TYPE_GID:
- kidstr = talloc_asprintf(ctx, "GID %lu",
- (unsigned long)map->xid.id);
- break;
-
- default:
- DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- if (kidstr == NULL) {
- DEBUG(0, ("ERROR: Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- if ((ksidstr = talloc_asprintf(
- ctx, "%s", sid_to_fstring(tmp, map->sid))) == NULL) {
- DEBUG(0, ("Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- DEBUG(10, ("Storing %s <-> %s map\n", ksidstr, kidstr));
- kid = string_term_tdb_data(kidstr);
- ksid = string_term_tdb_data(ksidstr);
-
- if (ctx->db->transaction_start(ctx->db) != 0) {
- DEBUG(0, ("Failed to start transaction for %s\n",
- ksidstr));
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
- }
-
- ret = dbwrap_store(ctx->db, ksid, kid, TDB_REPLACE);
- if (!NT_STATUS_IS_OK(ret)) {
- ctx->db->transaction_cancel(ctx->db);
- DEBUG(0, ("Error storing SID -> ID (%s -> %s): %s\n",
- ksidstr, kidstr, nt_errstr(ret)));
- goto done;
- }
- ret = dbwrap_store(ctx->db, kid, ksid, TDB_REPLACE);
- if (!NT_STATUS_IS_OK(ret)) {
- ctx->db->transaction_cancel(ctx->db);
- DEBUG(0, ("Error storing ID -> SID (%s -> %s): %s\n",
- kidstr, ksidstr, nt_errstr(ret)));
- goto done;
- }
-
- if (ctx->db->transaction_commit(ctx->db) != 0) {
- DEBUG(0, ("Failed to commit transaction for (%s -> %s)\n",
- ksidstr, kidstr));
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
+ if (NT_STATUS_EQUAL(ret, STATUS_SOME_UNMAPPED) && !dom->read_only) {
+ state.allocate_unmapped = true;
+ ret = dbwrap_trans_do(ctx->db,
+ idmap_tdb_sids_to_unixids_action,
+ &state);
}
- DEBUG(10,("Stored %s <-> %s\n", ksidstr, kidstr));
- ret = NT_STATUS_OK;
-
-done:
- talloc_free(ksidstr);
- talloc_free(kidstr);
return ret;
}
-/**********************************
- remove a mapping.
-**********************************/
-
-static NTSTATUS idmap_tdb_remove_mapping(struct idmap_domain *dom,
- const struct id_map *map)
-{
- struct idmap_tdb_context *ctx;
- NTSTATUS ret;
- TDB_DATA ksid, kid, data;
- char *ksidstr, *kidstr;
- fstring tmp;
-
- if (!map || !map->sid) {
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- ksidstr = kidstr = NULL;
- data.dptr = NULL;
-
- /* TODO: should we filter a remove_mapping using low/high filters ? */
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- switch (map->xid.type) {
-
- case ID_TYPE_UID:
- kidstr = talloc_asprintf(ctx, "UID %lu",
- (unsigned long)map->xid.id);
- break;
-
- case ID_TYPE_GID:
- kidstr = talloc_asprintf(ctx, "GID %lu",
- (unsigned long)map->xid.id);
- break;
-
- default:
- DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- if (kidstr == NULL) {
- DEBUG(0, ("ERROR: Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- if ((ksidstr = talloc_asprintf(
- ctx, "%s", sid_to_fstring(tmp, map->sid))) == NULL) {
- DEBUG(0, ("Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- DEBUG(10, ("Checking %s <-> %s map\n", ksidstr, kidstr));
- ksid = string_term_tdb_data(ksidstr);
- kid = string_term_tdb_data(kidstr);
-
- if (ctx->db->transaction_start(ctx->db) != 0) {
- DEBUG(0, ("Failed to start transaction for %s\n",
- ksidstr));
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
-
- /* Check if sid is present in database */
- data = dbwrap_fetch(ctx->db, NULL, ksid);
- if (!data.dptr) {
- ctx->db->transaction_cancel(ctx->db);
- DEBUG(10,("Record %s not found\n", ksidstr));
- ret = NT_STATUS_NONE_MAPPED;
- goto done;
- }
-
- /* Check if sid is mapped to the specified ID */
- if ((data.dsize != kid.dsize) ||
- (memcmp(data.dptr, kid.dptr, data.dsize) != 0)) {
- ctx->db->transaction_cancel(ctx->db);
- DEBUG(10,("Specified SID does not map to specified ID\n"));
- DEBUGADD(10,("Actual mapping is %s -> %s\n", ksidstr,
- (const char *)data.dptr));
- ret = NT_STATUS_NONE_MAPPED;
- goto done;
- }
-
- DEBUG(10, ("Removing %s <-> %s map\n", ksidstr, kidstr));
-
- /* Delete previous mappings. */
-
- DEBUG(10, ("Deleting existing mapping %s -> %s\n", ksidstr, kidstr ));
- ret = dbwrap_delete(ctx->db, ksid);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(0,("Warning: Failed to delete %s: %s\n",
- ksidstr, nt_errstr(ret)));
- }
-
- DEBUG(10,("Deleting existing mapping %s -> %s\n", kidstr, ksidstr ));
- ret = dbwrap_delete(ctx->db, kid);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(0,("Warning: Failed to delete %s: %s\n",
- kidstr, nt_errstr(ret)));
- }
-
- if (ctx->db->transaction_commit(ctx->db) != 0) {
- DEBUG(0, ("Failed to commit transaction for (%s -> %s)\n",
- ksidstr, kidstr));
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
- }
-
- ret = NT_STATUS_OK;
-
-done:
- talloc_free(ksidstr);
- talloc_free(kidstr);
- talloc_free(data.dptr);
- return ret;
-}
/**********************************
Close the idmap tdb instance
return NT_STATUS_OK;
}
-struct dump_data {
- TALLOC_CTX *memctx;
- struct id_map **maps;
- int *num_maps;
- NTSTATUS ret;
-};
-
-static int idmap_tdb_dump_one_entry(struct db_record *rec, void *pdata)
-{
- struct dump_data *data = talloc_get_type(pdata, struct dump_data);
- struct id_map *maps;
- int num_maps = *data->num_maps;
-
- /* ignore any record but the ones with a SID as key */
- if (strncmp((const char *)rec->key.dptr, "S-", 2) == 0) {
-
- maps = talloc_realloc(NULL, *data->maps, struct id_map, num_maps+1);
- if ( ! maps) {
- DEBUG(0, ("Out of memory!\n"));
- data->ret = NT_STATUS_NO_MEMORY;
- return -1;
- }
- *data->maps = maps;
- maps[num_maps].sid = talloc(maps, DOM_SID);
- if ( ! maps[num_maps].sid) {
- DEBUG(0, ("Out of memory!\n"));
- data->ret = NT_STATUS_NO_MEMORY;
- return -1;
- }
-
- if (!string_to_sid(maps[num_maps].sid, (const char *)rec->key.dptr)) {
- DEBUG(10,("INVALID record %s\n", (const char *)rec->key.dptr));
- /* continue even with errors */
- return 0;
- }
-
- /* Try a UID record. */
- if (sscanf((const char *)rec->value.dptr, "UID %u", &(maps[num_maps].xid.id)) == 1) {
- maps[num_maps].xid.type = ID_TYPE_UID;
- maps[num_maps].status = ID_MAPPED;
- *data->num_maps = num_maps + 1;
-
- /* Try a GID record. */
- } else
- if (sscanf((const char *)rec->value.dptr, "GID %u", &(maps[num_maps].xid.id)) == 1) {
- maps[num_maps].xid.type = ID_TYPE_GID;
- maps[num_maps].status = ID_MAPPED;
- *data->num_maps = num_maps + 1;
-
- /* Unknown record type ! */
- } else {
- maps[num_maps].status = ID_UNKNOWN;
- DEBUG(2, ("Found INVALID record %s -> %s\n",
- (const char *)rec->key.dptr,
- (const char *)rec->value.dptr));
- /* do not increment num_maps */
- }
- }
-
- return 0;
-}
-
-/**********************************
- Dump all mappings out
-**********************************/
-
-static NTSTATUS idmap_tdb_dump_data(struct idmap_domain *dom, struct id_map **maps, int *num_maps)
-{
- struct idmap_tdb_context *ctx;
- struct dump_data *data;
- NTSTATUS ret = NT_STATUS_OK;
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- data = TALLOC_ZERO_P(ctx, struct dump_data);
- if ( ! data) {
- DEBUG(0, ("Out of memory!\n"));
- return NT_STATUS_NO_MEMORY;
- }
- data->maps = maps;
- data->num_maps = num_maps;
- data->ret = NT_STATUS_OK;
-
- ctx->db->traverse_read(ctx->db, idmap_tdb_dump_one_entry, data);
-
- if ( ! NT_STATUS_IS_OK(data->ret)) {
- ret = data->ret;
- }
-
- talloc_free(data);
- return ret;
-}
-
static struct idmap_methods db_methods = {
-
.init = idmap_tdb_db_init,
.unixids_to_sids = idmap_tdb_unixids_to_sids,
.sids_to_unixids = idmap_tdb_sids_to_unixids,
- .set_mapping = idmap_tdb_set_mapping,
- .remove_mapping = idmap_tdb_remove_mapping,
- .dump_data = idmap_tdb_dump_data,
+ .allocate_id = idmap_tdb_get_new_id,
.close_fn = idmap_tdb_close
};
-static struct idmap_alloc_methods db_alloc_methods = {
-
- .init = idmap_tdb_alloc_init,
- .allocate_id = idmap_tdb_allocate_id,
- .get_id_hwm = idmap_tdb_get_hwm,
- .set_id_hwm = idmap_tdb_set_hwm,
- .close_fn = idmap_tdb_alloc_close
-};
-
-NTSTATUS idmap_alloc_tdb_init(void)
-{
- return smb_register_idmap_alloc(SMB_IDMAP_INTERFACE_VERSION, "tdb", &db_alloc_methods);
-}
-
NTSTATUS idmap_tdb_init(void)
{
- NTSTATUS ret;
-
DEBUG(10, ("calling idmap_tdb_init\n"));
- /* FIXME: bad hack to actually register also the alloc_tdb module without changining configure.in */
- ret = idmap_alloc_tdb_init();
- if (! NT_STATUS_IS_OK(ret)) {
- return ret;
- }
return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb", &db_methods);
}
git.samba.org / amitay / samba.git / blobdiff