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-rw-r--r--packages/taler-wallet-core/src/crypto/workers/worker-common.ts99
1 files changed, 99 insertions, 0 deletions
diff --git a/packages/taler-wallet-core/src/crypto/workers/worker-common.ts b/packages/taler-wallet-core/src/crypto/workers/worker-common.ts
new file mode 100644
index 000000000..67af68f35
--- /dev/null
+++ b/packages/taler-wallet-core/src/crypto/workers/worker-common.ts
@@ -0,0 +1,99 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Imports.
+ */
+import { j2s, Logger, TalerErrorCode } from "@gnu-taler/taler-util";
+import { getErrorDetailFromException, makeErrorDetail } from "../../errors.js";
+import { TalerCryptoInterfaceR } from "../cryptoImplementation.js";
+import {
+ CryptoWorkerRequestMessage,
+ CryptoWorkerResponseMessage,
+} from "./cryptoWorkerInterface.js";
+
+const logger = new Logger("worker-common.ts");
+
+/**
+ * Process a crypto worker request by calling into the table
+ * of supported operations.
+ *
+ * Does not throw, but returns an error response instead.
+ */
+export async function processRequestWithImpl(
+ reqMsg: CryptoWorkerRequestMessage,
+ impl: TalerCryptoInterfaceR,
+): Promise<CryptoWorkerResponseMessage> {
+ if (typeof reqMsg !== "object") {
+ logger.error("request must be an object");
+ return {
+ type: "error",
+ error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
+ detail: "",
+ }),
+ };
+ }
+ const id = reqMsg.id;
+ if (typeof id !== "number") {
+ const msg = "RPC id must be number";
+ logger.error(msg);
+ return {
+ type: "error",
+ error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
+ detail: msg,
+ }),
+ };
+ }
+ const operation = reqMsg.operation;
+ if (typeof operation !== "string") {
+ const msg = "RPC operation must be string";
+ logger.error(msg);
+ return {
+ type: "error",
+ id,
+ error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
+ detail: msg,
+ }),
+ };
+ }
+
+ if (!(operation in impl)) {
+ const msg = `crypto operation '${operation}' not found`;
+ logger.error(msg);
+ return {
+ type: "error",
+ id,
+ error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
+ detail: msg,
+ }),
+ };
+ }
+
+ let responseMsg: CryptoWorkerResponseMessage;
+
+ try {
+ const result = await (impl as any)[operation](impl, reqMsg);
+ responseMsg = { type: "success", result, id };
+ } catch (e: any) {
+ logger.error(`error during operation: ${e.stack ?? e.toString()}`);
+ responseMsg = {
+ type: "error",
+ error: getErrorDetailFromException(e),
+ id,
+ };
+ }
+ return responseMsg;
+}