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Vencord/src/debug/runReporter.ts

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2024-06-01 02:28:58 +00:00
/*
* Vencord, a Discord client mod
* Copyright (c) 2024 Vendicated and contributors
* SPDX-License-Identifier: GPL-3.0-or-later
*/
import { Logger } from "@utils/Logger";
import { canonicalizeMatch } from "@utils/patches";
import * as Webpack from "@webpack";
import { wreq } from "@webpack";
import { patches } from "plugins";
const ReporterLogger = new Logger("Reporter");
async function runReporter() {
ReporterLogger.log("Starting test...");
try {
const validChunks = new Set<string>();
const invalidChunks = new Set<string>();
const deferredRequires = new Set<string>();
let chunksSearchingResolve: (value: void | PromiseLike<void>) => void;
const chunksSearchingDone = new Promise<void>(r => chunksSearchingResolve = r);
// True if resolved, false otherwise
const chunksSearchPromises = [] as Array<() => boolean>;
const LazyChunkRegex = canonicalizeMatch(/(?:(?:Promise\.all\(\[)?(\i\.e\("[^)]+?"\)[^\]]*?)(?:\]\))?)\.then\(\i\.bind\(\i,"([^)]+?)"\)\)/g);
async function searchAndLoadLazyChunks(factoryCode: string) {
const lazyChunks = factoryCode.matchAll(LazyChunkRegex);
const validChunkGroups = new Set<[chunkIds: string[], entryPoint: string]>();
// Workaround for a chunk that depends on the ChannelMessage component but may be be force loaded before
// the chunk containing the component
const shouldForceDefer = factoryCode.includes(".Messages.GUILD_FEED_UNFEATURE_BUTTON_TEXT");
await Promise.all(Array.from(lazyChunks).map(async ([, rawChunkIds, entryPoint]) => {
const chunkIds = rawChunkIds ? Array.from(rawChunkIds.matchAll(Webpack.ChunkIdsRegex)).map(m => m[1]) : [];
if (chunkIds.length === 0) {
return;
}
let invalidChunkGroup = false;
for (const id of chunkIds) {
if (wreq.u(id) == null || wreq.u(id) === "undefined.js") continue;
const isWasm = await fetch(wreq.p + wreq.u(id))
.then(r => r.text())
.then(t => (IS_WEB && t.includes(".module.wasm")) || !t.includes("(this.webpackChunkdiscord_app=this.webpackChunkdiscord_app||[]).push"));
if (isWasm && IS_WEB) {
invalidChunks.add(id);
invalidChunkGroup = true;
continue;
}
validChunks.add(id);
}
if (!invalidChunkGroup) {
validChunkGroups.add([chunkIds, entryPoint]);
}
}));
// Loads all found valid chunk groups
await Promise.all(
Array.from(validChunkGroups)
.map(([chunkIds]) =>
Promise.all(chunkIds.map(id => wreq.e(id as any).catch(() => { })))
)
);
// Requires the entry points for all valid chunk groups
for (const [, entryPoint] of validChunkGroups) {
try {
if (shouldForceDefer) {
deferredRequires.add(entryPoint);
continue;
}
if (wreq.m[entryPoint]) wreq(entryPoint as any);
} catch (err) {
console.error(err);
}
}
// setImmediate to only check if all chunks were loaded after this function resolves
// We check if all chunks were loaded every time a factory is loaded
// If we are still looking for chunks in the other factories, the array will have that factory's chunk search promise not resolved
// But, if all chunk search promises are resolved, this means we found every lazy chunk loaded by Discord code and manually loaded them
setTimeout(() => {
let allResolved = true;
for (let i = 0; i < chunksSearchPromises.length; i++) {
const isResolved = chunksSearchPromises[i]();
if (isResolved) {
// Remove finished promises to avoid having to iterate through a huge array everytime
chunksSearchPromises.splice(i--, 1);
} else {
allResolved = false;
}
}
if (allResolved) chunksSearchingResolve();
}, 0);
}
Webpack.beforeInitListeners.add(async () => {
ReporterLogger.log("Loading all chunks...");
Webpack.factoryListeners.add(factory => {
let isResolved = false;
searchAndLoadLazyChunks(factory.toString()).then(() => isResolved = true);
chunksSearchPromises.push(() => isResolved);
});
// setImmediate to only search the initial factories after Discord initialized the app
// our beforeInitListeners are called before Discord initializes the app
setTimeout(() => {
for (const factoryId in wreq.m) {
let isResolved = false;
searchAndLoadLazyChunks(wreq.m[factoryId].toString()).then(() => isResolved = true);
chunksSearchPromises.push(() => isResolved);
}
}, 0);
});
await chunksSearchingDone;
// Require deferred entry points
for (const deferredRequire of deferredRequires) {
wreq!(deferredRequire as any);
}
// All chunks Discord has mapped to asset files, even if they are not used anymore
const allChunks = [] as string[];
// Matches "id" or id:
for (const currentMatch of wreq!.u.toString().matchAll(/(?:"(\d+?)")|(?:(\d+?):)/g)) {
const id = currentMatch[1] ?? currentMatch[2];
if (id == null) continue;
allChunks.push(id);
}
if (allChunks.length === 0) throw new Error("Failed to get all chunks");
// Chunks that are not loaded (not used) by Discord code anymore
const chunksLeft = allChunks.filter(id => {
return !(validChunks.has(id) || invalidChunks.has(id));
});
await Promise.all(chunksLeft.map(async id => {
const isWasm = await fetch(wreq.p + wreq.u(id))
.then(r => r.text())
.then(t => (IS_WEB && t.includes(".module.wasm")) || !t.includes("(this.webpackChunkdiscord_app=this.webpackChunkdiscord_app||[]).push"));
// Loads and requires a chunk
if (!isWasm) {
await wreq.e(id as any);
if (wreq.m[id]) wreq(id as any);
}
}));
ReporterLogger.log("Finished loading all chunks!");
for (const patch of patches) {
if (!patch.all) {
new Logger("WebpackInterceptor").warn(`Patch by ${patch.plugin} found no module (Module id is -): ${patch.find}`);
}
}
for (const [searchType, args] of Webpack.lazyWebpackSearchHistory) {
let method = searchType;
if (searchType === "findComponent") method = "find";
if (searchType === "findExportedComponent") method = "findByProps";
if (searchType === "waitFor" || searchType === "waitForComponent") {
if (typeof args[0] === "string") method = "findByProps";
else method = "find";
}
if (searchType === "waitForStore") method = "findStore";
try {
let result: any;
if (method === "proxyLazyWebpack" || method === "LazyComponentWebpack") {
const [factory] = args;
result = factory();
} else if (method === "extractAndLoadChunks") {
const [code, matcher] = args;
result = await Webpack.extractAndLoadChunks(code, matcher);
if (result === false) result = null;
} else {
// @ts-ignore
result = Webpack[method](...args);
}
if (result == null || (result.$$vencordInternal != null && result.$$vencordInternal() == null)) throw "a rock at ben shapiro";
} catch (e) {
let logMessage = searchType;
if (method === "find" || method === "proxyLazyWebpack" || method === "LazyComponentWebpack") logMessage += `(${args[0].toString().slice(0, 147)}...)`;
else if (method === "extractAndLoadChunks") logMessage += `([${args[0].map(arg => `"${arg}"`).join(", ")}], ${args[1].toString()})`;
else logMessage += `(${args.map(arg => `"${arg}"`).join(", ")})`;
ReporterLogger.log("Webpack Find Fail:", logMessage);
}
}
ReporterLogger.log("Finished test");
} catch (e) {
ReporterLogger.log("A fatal error occurred:", e);
}
}
runReporter();