core: Move ssb.swapWithServerIdentity() to C.

src/api.js.c

@@ -1158,6 +1158,77 @@ static JSValue _tf_ssb_delete_user(JSContext* context, JSValueConst this_val, in
 	return result;
 }
 
+typedef struct _swap_with_server_identity_t
+{
+	char server_id[k_id_base64_len];
+	char user_id[k_id_base64_len];
+	JSValue promise[2];
+	char* error;
+	char user[];
+} swap_with_server_identity_t;
+
+static void _tf_ssb_swap_with_server_identity_work(tf_ssb_t* ssb, void* user_data)
+{
+	swap_with_server_identity_t* work = user_data;
+	sqlite3* db = tf_ssb_acquire_db_writer(ssb);
+	work->error = tf_ssb_db_swap_with_server_identity(db, work->user, work->user_id, work->server_id);
+	tf_ssb_release_db_writer(ssb, db);
+}
+
+static void _tf_ssb_swap_with_server_identity_after_work(tf_ssb_t* ssb, int status, void* user_data)
+{
+	swap_with_server_identity_t* work = user_data;
+	JSContext* context = tf_ssb_get_context(ssb);
+	JSValue error = JS_UNDEFINED;
+	if (work->error)
+	{
+		JSValue arg = JS_ThrowInternalError(context, "%s", work->error);
+		JSValue exception = JS_GetException(context);
+		error = JS_Call(context, work->promise[1], JS_UNDEFINED, 1, &exception);
+		tf_free(work->error);
+		JS_FreeValue(context, exception);
+		JS_FreeValue(context, arg);
+	}
+	else
+	{
+		error = JS_Call(context, work->promise[0], JS_UNDEFINED, 0, NULL);
+	}
+	tf_util_report_error(context, error);
+	JS_FreeValue(context, error);
+	JS_FreeValue(context, work->promise[0]);
+	JS_FreeValue(context, work->promise[1]);
+	tf_free(work);
+}
+
+static void _tf_ssb_swap_with_server_identity_permission_callback(JSContext* context, bool granted, JSValue value, void* user_data)
+{
+	swap_with_server_identity_t* work = user_data;
+	tf_task_t* task = tf_task_get(context);
+	tf_ssb_t* ssb = tf_task_get_ssb(task);
+	tf_ssb_run_work(ssb, _tf_ssb_swap_with_server_identity_work, _tf_ssb_swap_with_server_identity_after_work, work);
+}
+
+static JSValue _tf_ssb_swap_with_server_identity(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv, int magic, JSValue* data)
+{
+	tf_task_t* task = tf_task_get(context);
+	tf_ssb_t* ssb = tf_task_get_ssb(task);
+	const char* user = _tf_ssb_get_process_credentials_session_name(context, data[0]);
+	size_t user_length = user ? strlen(user) : 0;
+	const char* id = JS_ToCString(context, argv[0]);
+	swap_with_server_identity_t* work = tf_malloc(sizeof(swap_with_server_identity_t) + user_length + 1);
+	*work = (swap_with_server_identity_t) { 0 };
+	tf_ssb_whoami(ssb, work->server_id, sizeof(work->server_id));
+	tf_string_set(work->user_id, sizeof(work->user_id), id);
+	memcpy(work->user, user, user_length + 1);
+	JSValue result = JS_NewPromiseCapability(context, work->promise);
+	char description[1024];
+	snprintf(description, sizeof(description), "Swap identity %s with %s.", work->user_id, work->server_id);
+	_tf_ssb_permission_test(context, data[0], "delete_user", description, _tf_ssb_swap_with_server_identity_permission_callback, work);
+	JS_FreeCString(context, id);
+	tf_free((void*)user);
+	return result;
+}
+
 static JSValue _tf_api_register_imports(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
 {
 	JSValue imports = argv[0];
@@ -1200,6 +1271,8 @@ static JSValue _tf_api_register_imports(JSContext* context, JSValueConst this_va
 		JS_SetPropertyStr(context, ssb, "addBlock", JS_NewCFunctionData(context, _tf_ssb_add_block, 1, 0, 1, &process));
 		JS_SetPropertyStr(context, ssb, "removeBlock", JS_NewCFunctionData(context, _tf_ssb_remove_block, 1, 0, 1, &process));
 		JS_SetPropertyStr(context, ssb, "getBlocks", JS_NewCFunctionData(context, _tf_ssb_get_blocks, 0, 0, 1, &process));
+
+		JS_SetPropertyStr(context, ssb, "swapWithServerIdentity", JS_NewCFunctionData(context, _tf_ssb_swap_with_server_identity, 1, 0, 1, &process));
 	}
 	JS_FreeValue(context, administration);
 	JS_FreeValue(context, permissions);