From 706c07fa1d069290992bd31d53b0c89324992f9c Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Thu, 28 Nov 2019 00:46:34 +0100
Subject: implement JS-only Taler, remove emscripten

---
 src/crypto/nodeEmscriptenLoader.ts | 101 -------------------------------------
 1 file changed, 101 deletions(-)
 delete mode 100644 src/crypto/nodeEmscriptenLoader.ts

(limited to 'src/crypto/nodeEmscriptenLoader.ts')

diff --git a/src/crypto/nodeEmscriptenLoader.ts b/src/crypto/nodeEmscriptenLoader.ts
deleted file mode 100644
index 65d54a702..000000000
--- a/src/crypto/nodeEmscriptenLoader.ts
+++ /dev/null
@@ -1,101 +0,0 @@
-
-import { EmscEnvironment } from "./emscInterface";
-import { CryptoImplementation } from "./cryptoImplementation";
-
-import fs = require("fs");
-
-export class NodeEmscriptenLoader {
-  private cachedEmscEnvironment: EmscEnvironment | undefined = undefined;
-  private cachedEmscEnvironmentPromise:
-    | Promise<EmscEnvironment>
-    | undefined = undefined;
-
-    private async getWasmBinary(): Promise<Uint8Array> {
-      // @ts-ignore
-      const akonoGetData = global.__akono_getData;
-      if (akonoGetData) {
-        // We're running embedded node on Android
-        console.log("reading wasm binary from akono");
-        const data = akonoGetData("taler-emscripten-lib.wasm");
-        // The data we get is base64-encoded binary data
-        let buf = new Buffer(data, 'base64');
-        return new Uint8Array(buf);
-  
-      } else {
-        // We're in a normal node environment
-        const binaryPath = __dirname + "/../../../emscripten/taler-emscripten-lib.wasm";
-        const wasmBinary = new Uint8Array(fs.readFileSync(binaryPath));
-        return wasmBinary;
-      }
-    }
-  
-    async getEmscriptenEnvironment(): Promise<EmscEnvironment> {
-      if (this.cachedEmscEnvironment) {
-        return this.cachedEmscEnvironment;
-      }
-  
-      if (this.cachedEmscEnvironmentPromise) {
-        return this.cachedEmscEnvironmentPromise;
-      }
-  
-      let lib: any;
-  
-      const wasmBinary = await this.getWasmBinary();
-  
-      return new Promise((resolve, reject) => {
-        // Arguments passed to the emscripten prelude
-        const libArgs = {
-          wasmBinary,
-          onRuntimeInitialized: () => {
-            if (!lib) {
-              console.error("fatal emscripten initialization error");
-              return;
-            }
-            this.cachedEmscEnvironmentPromise = undefined;
-            this.cachedEmscEnvironment = new EmscEnvironment(lib);
-            resolve(this.cachedEmscEnvironment);
-          },
-        };
-  
-        // Make sure that TypeScript doesn't try
-        // to check the taler-emscripten-lib.
-        const indirectRequire = require;
-  
-        const g = global;
-  
-        // unavoidable hack, so that emscripten detects
-        // the environment as node even though importScripts
-        // is present.
-  
-        // @ts-ignore
-        const savedImportScripts = g.importScripts;
-        // @ts-ignore
-        delete g.importScripts;
-        // @ts-ignore
-        const savedCrypto = g.crypto;
-        // @ts-ignore
-        delete g.crypto;
-  
-        // Assume that the code is run from the dist/ directory.
-        const libFn = indirectRequire(
-          "../../../emscripten/taler-emscripten-lib.js",
-        );
-        lib = libFn(libArgs);
-  
-        // @ts-ignore
-        g.importScripts = savedImportScripts;
-        // @ts-ignore
-        g.crypto = savedCrypto;
-  
-        if (!lib) {
-          throw Error("could not load taler-emscripten-lib.js");
-        }
-  
-        if (!lib.ccall) {
-          throw Error(
-            "sanity check failed: taler-emscripten lib does not have 'ccall'",
-          );
-        }
-      });
-    }
-}
-- 
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