created a sync worker for web based on the node version, then split for both

packages/taler-wallet-core/src/crypto/workers/synchronousWorkerNode.ts

@@ -0,0 +1,204 @@
+/*
+ This file is part of GNU Taler
+ (C) 2019 GNUnet e.V.
+
+ 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/>
+ */
+
+import { Logger } from "@gnu-taler/taler-util";
+import {
+  nativeCryptoR,
+  TalerCryptoInterfaceR,
+} from "../cryptoImplementation.js";
+import { CryptoRpcClient } from "./rpcClient.js";
+
+const logger = new Logger("synchronousWorker.ts");
+
+/**
+ * Worker implementation that uses node subprocesses.
+ */
+export class SynchronousCryptoWorker {
+  /**
+   * Function to be called when we receive a message from the worker thread.
+   */
+  onmessage: undefined | ((m: any) => void);
+
+  /**
+   * Function to be called when we receive an error from the worker thread.
+   */
+  onerror: undefined | ((m: any) => void);
+
+  cryptoImplR: TalerCryptoInterfaceR;
+
+  rpcClient: CryptoRpcClient | undefined;
+
+  constructor() {
+    this.onerror = undefined;
+    this.onmessage = undefined;
+
+    this.cryptoImplR = { ...nativeCryptoR };
+
+    if (process.env["TALER_WALLET_PRIMITIVE_WORKER"]) {
+      logger.info("using RPC for some crypto operations");
+      const rpc = (this.rpcClient = new CryptoRpcClient());
+      this.cryptoImplR.eddsaSign = async (_, req) => {
+        return await rpc.queueRequest({
+          op: "eddsa_sign",
+          args: {
+            msg: req.msg,
+            priv: req.priv,
+          },
+        });
+      };
+      this.cryptoImplR.setupRefreshPlanchet = async (_, req) => {
+        const res = await rpc.queueRequest({
+          op: "setup_refresh_planchet",
+          args: {
+            coin_index: req.coinNumber,
+            transfer_secret: req.transferSecret,
+          },
+        });
+        return {
+          bks: res.blinding_key,
+          coinPriv: res.coin_priv,
+          coinPub: res.coin_pub,
+        };
+      };
+      this.cryptoImplR.rsaBlind = async (_, req) => {
+        const res = await rpc.queueRequest({
+          op: "rsa_blind",
+          args: {
+            bks: req.bks,
+            hm: req.hm,
+            pub: req.pub,
+          },
+        });
+        return {
+          blinded: res.blinded,
+        };
+      };
+      this.cryptoImplR.keyExchangeEcdheEddsa = async (_, req) => {
+        const res = await rpc.queueRequest({
+          op: "kx_ecdhe_eddsa",
+          args: {
+            ecdhe_priv: req.ecdhePriv,
+            eddsa_pub: req.eddsaPub,
+          },
+        });
+        return {
+          h: res.h,
+        };
+      };
+      this.cryptoImplR.eddsaGetPublic = async (_, req) => {
+        const res = await rpc.queueRequest({
+          op: "eddsa_get_public",
+          args: {
+            eddsa_priv: req.priv,
+          },
+        });
+        return {
+          pub: res.eddsa_pub,
+        };
+      };
+      this.cryptoImplR.ecdheGetPublic = async (_, req) => {
+        const res = await rpc.queueRequest({
+          op: "ecdhe_get_public",
+          args: {
+            ecdhe_priv: req.priv,
+          },
+        });
+        return {
+          pub: res.ecdhe_pub,
+        };
+      };
+    }
+  }
+
+  /**
+   * Add an event listener for either an "error" or "message" event.
+   */
+  addEventListener(event: "message" | "error", fn: (x: any) => void): void {
+    switch (event) {
+      case "message":
+        this.onmessage = fn;
+        break;
+      case "error":
+        this.onerror = fn;
+        break;
+    }
+  }
+
+  private dispatchMessage(msg: any): void {
+    if (this.onmessage) {
+      this.onmessage({ data: msg });
+    }
+  }
+
+  private async handleRequest(
+    operation: string,
+    id: number,
+    req: unknown,
+  ): Promise<void> {
+    const impl = this.cryptoImplR;
+
+    if (!(operation in impl)) {
+      console.error(`crypto operation '${operation}' not found`);
+      return;
+    }
+
+    let result: any;
+    try {
+      result = await (impl as any)[operation](impl, req);
+    } catch (e: any) {
+      logger.error(`error during operation '${operation}': ${e}`);
+      return;
+    }
+
+    try {
+      setTimeout(() => this.dispatchMessage({ result, id }), 0);
+    } catch (e) {
+      logger.error("got error during dispatch", e);
+    }
+  }
+
+  /**
+   * Send a message to the worker thread.
+   */
+  postMessage(msg: any): void {
+    const args = msg.args;
+    if (!Array.isArray(args)) {
+      console.error("args must be array");
+      return;
+    }
+    const id = msg.id;
+    if (typeof id !== "number") {
+      console.error("RPC id must be number");
+      return;
+    }
+    const operation = msg.operation;
+    if (typeof operation !== "string") {
+      console.error("RPC operation must be string");
+      return;
+    }
+
+    this.handleRequest(operation, id, args).catch((e) => {
+      console.error("Error while handling crypto request:", e);
+    });
+  }
+
+  /**
+   * Forcibly terminate the worker thread.
+   */
+  terminate(): void {
+    // This is a no-op.
+  }
+}

packages/taler-wallet-core/src/crypto/workers/synchronousWorkerWeb.ts

@@ -0,0 +1,127 @@
+/*
+ This file is part of GNU Taler
+ (C) 2019 GNUnet e.V.
+
+ 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/>
+ */
+
+import { Logger } from "@gnu-taler/taler-util";
+import {
+  nativeCryptoR,
+  TalerCryptoInterfaceR,
+} from "../cryptoImplementation.js";
+
+
+
+const logger = new Logger("synchronousWorker.ts");
+
+/**
+ * Worker implementation that uses node subprocesses.
+ */
+export class SynchronousCryptoWorker {
+  /**
+   * Function to be called when we receive a message from the worker thread.
+   */
+  onmessage: undefined | ((m: any) => void);
+
+  /**
+   * Function to be called when we receive an error from the worker thread.
+   */
+  onerror: undefined | ((m: any) => void);
+
+  cryptoImplR: TalerCryptoInterfaceR;
+
+  constructor() {
+    this.onerror = undefined;
+    this.onmessage = undefined;
+    this.cryptoImplR = { ...nativeCryptoR };
+  }
+
+  /**
+   * Add an event listener for either an "error" or "message" event.
+   */
+  addEventListener(event: "message" | "error", fn: (x: any) => void): void {
+    switch (event) {
+      case "message":
+        this.onmessage = fn;
+        break;
+      case "error":
+        this.onerror = fn;
+        break;
+    }
+  }
+
+  private dispatchMessage(msg: any): void {
+    if (this.onmessage) {
+      this.onmessage({ data: msg });
+    }
+  }
+
+  private async handleRequest(
+    operation: string,
+    id: number,
+    args: string[],
+  ): Promise<void> {
+    const impl = this.cryptoImplR;
+
+    if (!(operation in impl)) {
+      console.error(`crypto operation '${operation}' not found`);
+      return;
+    }
+
+    let result: any;
+    try {
+      result = await (impl as any)[operation](...args);
+    } catch (e: any) {
+      logger.error(`error during operation '${operation}': ${e}`);
+      return;
+    }
+
+    try {
+      setTimeout(() => this.dispatchMessage({ result, id }), 0);
+    } catch (e) {
+      logger.error("got error during dispatch", e);
+    }
+  }
+
+  /**
+   * Send a message to the worker thread.
+   */
+  postMessage(msg: any): void {
+    const args = msg.args;
+    if (!Array.isArray(args)) {
+      console.error("args must be array");
+      return;
+    }
+    const id = msg.id;
+    if (typeof id !== "number") {
+      console.error("RPC id must be number");
+      return;
+    }
+    const operation = msg.operation;
+    if (typeof operation !== "string") {
+      console.error("RPC operation must be string");
+      return;
+    }
+
+    this.handleRequest(operation, id, args).catch((e) => {
+      console.error("Error while handling crypto request:", e);
+    });
+  }
+
+  /**
+   * Forcibly terminate the worker thread.
+   */
+  terminate(): void {
+    // This is a no-op.
+  }
+}

packages/taler-wallet-core/src/index.browser.ts

@@ -15,3 +15,4 @@
  */
 
 export * from "./index.js";
+export { SynchronousCryptoWorker } from "./crypto/workers/synchronousWorkerWeb.js";

packages/taler-wallet-core/src/index.node.ts

@@ -24,6 +24,7 @@ export {
   DefaultNodeWalletArgs,
 } from "./headless/helpers.js";
 export * from "./crypto/workers/nodeThreadWorker.js";
+export { SynchronousCryptoWorker } from "./crypto/workers/synchronousWorkerNode.js";
 
 export type { AccessStats } from "@gnu-taler/idb-bridge";
 export * from "./crypto/workers/synchronousWorkerFactory.js";

packages/taler-wallet-core/src/index.ts

@@ -38,7 +38,6 @@ export {
   CryptoWorkerFactory,
   CryptoDispatcher,
 } from "./crypto/workers/cryptoDispatcher.js";
-export { SynchronousCryptoWorker } from "./crypto/workers/synchronousWorker.js";
 
 export * from "./pending-types.js";