From 7c7cbe655a0cfc0444375665e55c7927719e3326 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Wed, 26 Jun 2024 16:27:14 +0100 Subject: [PATCH] Remove code which loads legacy libolm Now that we use the Rust crypto stack (https://github.com/matrix-org/matrix-react-sdk/pull/12630), the legacy olm library is unneeded. Remove all the dedicated cruft for loading it. (All this crap is why matrix-sdk-crypto-wasm has to base64 its wasm artifact, cf https://github.com/matrix-org/matrix-rust-sdk/pull/1167.) --- src/vector/index.ts | 3 --- src/vector/init.tsx | 46 --------------------------------------------- webpack.config.js | 26 +++++-------------------- 3 files changed, 5 insertions(+), 70 deletions(-) diff --git a/src/vector/index.ts b/src/vector/index.ts index c5fee22a04..0990a9be1d 100644 --- a/src/vector/index.ts +++ b/src/vector/index.ts @@ -105,7 +105,6 @@ async function start(): Promise { rageshakePromise, setupLogStorage, preparePlatform, - loadOlm, loadConfig, loadLanguage, loadTheme, @@ -143,7 +142,6 @@ async function start(): Promise { } } - const loadOlmPromise = loadOlm(); // set the platform for react sdk preparePlatform(); // load config requires the platform to be ready @@ -210,7 +208,6 @@ async function start(): Promise { // app load critical path starts here // assert things started successfully // ################################## - await loadOlmPromise; await loadModulesPromise; await loadThemePromise; await loadLanguagePromise; diff --git a/src/vector/init.tsx b/src/vector/init.tsx index f5db07ba67..9885f567a7 100644 --- a/src/vector/init.tsx +++ b/src/vector/init.tsx @@ -17,10 +17,6 @@ See the License for the specific language governing permissions and limitations under the License. */ -// eslint-disable-next-line @typescript-eslint/ban-ts-comment -// @ts-ignore -import olmWasmPath from "@matrix-org/olm/olm.wasm"; -import Olm from "@matrix-org/olm"; import * as ReactDOM from "react-dom"; import * as React from "react"; import * as languageHandler from "matrix-react-sdk/src/languageHandler"; @@ -76,48 +72,6 @@ export async function loadConfig(): Promise { } } -export function loadOlm(): Promise { - /* Load Olm. We try the WebAssembly version first, and then the legacy, - * asm.js version if that fails. For this reason we need to wait for this - * to finish before continuing to load the rest of the app. In future - * we could somehow pass a promise down to react-sdk and have it wait on - * that so olm can be loading in parallel with the rest of the app. - * - * We also need to tell the Olm js to look for its wasm file at the same - * level as index.html. It really should be in the same place as the js, - * ie. in the bundle directory, but as far as I can tell this is - * completely impossible with webpack. We do, however, use a hashed - * filename to avoid caching issues. - */ - return Olm.init({ - locateFile: () => olmWasmPath, - }) - .then(() => { - logger.log("Using WebAssembly Olm"); - }) - .catch((wasmLoadError) => { - logger.log("Failed to load Olm: trying legacy version", wasmLoadError); - return new Promise((resolve, reject) => { - const s = document.createElement("script"); - s.src = "olm_legacy.js"; // XXX: This should be cache-busted too - s.onload = resolve; - s.onerror = reject; - document.body.appendChild(s); - }) - .then(() => { - // Init window.Olm, ie. the one just loaded by the script tag, - // not 'Olm' which is still the failed wasm version. - return window.Olm.init(); - }) - .then(() => { - logger.log("Using legacy Olm"); - }) - .catch((legacyLoadError) => { - logger.log("Both WebAssembly and asm.js Olm failed!", legacyLoadError); - }); - }); -} - export async function loadLanguage(): Promise { const prefLang = SettingsStore.getValue("language", null, /*excludeDefault=*/ true); let langs: string[] = []; diff --git a/webpack.config.js b/webpack.config.js index 462dde351b..570cf87990 100644 --- a/webpack.config.js +++ b/webpack.config.js @@ -274,10 +274,6 @@ module.exports = (env, argv) => { // there is no need for webpack to parse them - they can just be // included as-is. /highlight\.js[\\/]lib[\\/]languages/, - - // olm takes ages for webpack to process, and it's already heavily - // optimised, so there is little to gain by us uglifying it. - /olm[\\/](javascript[\\/])?olm\.js$/, ], rules: [ useHMR && { @@ -443,20 +439,6 @@ module.exports = (env, argv) => { }, ], }, - { - // the olm library wants to load its own wasm, rather than have webpack do it. - // We therefore use the `file-loader` to tell webpack to dump the contents to - // a separate file and return the name, and override the default `type` for `.wasm` files - // (which is `webassembly/experimental` under webpack 4) to stop webpack trying to interpret - // the filename as webassembly. (see also https://github.com/webpack/webpack/issues/6725) - test: /olm\.wasm$/, - loader: "file-loader", - type: "javascript/auto", - options: { - name: "[name].[hash:7].[ext]", - outputPath: ".", - }, - }, { // Fix up the name of the opus-recorder worker (react-sdk dependency). // We more or less just want it to be clear it's for opus and not something else. @@ -498,8 +480,11 @@ module.exports = (env, argv) => { }, }, { - // Same deal as olm.wasm: the decoderWorker wants to load the wasm artifact - // itself. + // The decoderWorker wants to load its own wasm, rather than have webpack do it. + // We therefore use the `file-loader` to tell webpack to dump the contents to + // a separate file and return the name, and override the default `type` for `.wasm` files + // (which is `webassembly/experimental` under webpack 4) to stop webpack trying to interpret + // the filename as webassembly. (see also https://github.com/webpack/webpack/issues/6725) test: /decoderWorker\.min\.wasm$/, loader: "file-loader", type: "javascript/auto", @@ -750,7 +735,6 @@ module.exports = (env, argv) => { { from: "vector-icons/**", context: path.resolve(__dirname, "res") }, { from: "decoder-ring/**", context: path.resolve(__dirname, "res") }, { from: "media/**", context: path.resolve(__dirname, "node_modules/matrix-react-sdk/res/") }, - "node_modules/@matrix-org/olm/olm_legacy.js", { from: "config.json", noErrorOnMissing: true }, "contribute.json", ],