s4-dsdb: added dsdb_module_dn_by_guid()

[kai/samba-autobuild/.git] / source4 / dsdb / samdb / ldb_modules / util.c

diff --git a/source4/dsdb/samdb/ldb_modules/util.c b/source4/dsdb/samdb/ldb_modules/util.c
index fe6ddfa9b09889f65a1e163e51f24be60693e16f..df3b0a9e80c0ac5d96e328383889bcb433b1b5b6 100644 (file)
--- a/source4/dsdb/samdb/ldb_modules/util.c
+++ b/source4/dsdb/samdb/ldb_modules/util.c
@@ -205,3 +205,44 @@ int dsdb_module_search(struct ldb_module *module,
        return ret;
 }
 
+/*
+  find a DN given a GUID. This searches across all partitions
+ */
+int dsdb_module_dn_by_guid(struct ldb_module *module, TALLOC_CTX *mem_ctx,
+                          const struct GUID *guid, struct ldb_dn **dn)
+{
+       struct ldb_result *res;
+       const char *attrs[] = { NULL };
+       char *expression;
+       TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+       int ret;
+
+       expression = talloc_asprintf(tmp_ctx, "objectGUID=%s", GUID_string(tmp_ctx, guid));
+       if (!expression) {
+               ldb_module_oom(module);
+               return LDB_ERR_OPERATIONS_ERROR;
+       }
+
+       ret = dsdb_module_search(module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
+                                attrs, DSDB_SEARCH_SHOW_DELETED | DSDB_SEARCH_SEARCH_ALL_PARTITIONS,
+                                expression);
+       if (ret != LDB_SUCCESS) {
+               talloc_free(tmp_ctx);
+               return ret;
+       }
+       if (ret->count == 0) {
+               talloc_free(tmp_ctx);
+               return LDB_ERR_NO_SUCH_OBJECT;
+       }
+       if (res->count != 1) {
+               ldb_asprintf_errstring(ldb_module_get_ctx(module), "More than one object found matching %s\n",
+                                      expression);
+               talloc_free(tmp_ctx);
+               return LDB_ERR_OPERATIONS_ERROR;
+       }
+
+       *dn = talloc_steal(mem_ctx, res->msgs[0].dn);
+
+       talloc_free(tmp_ctx);
+       return LDB_SUCCESS;
+}