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Fix entry webpack modules not being patched

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Vendicated 2023-10-26 21:21:21 +02:00
parent 25f101602d
commit e4701769a5
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GPG Key ID: D66986BAF75ECF18
1 changed files with 189 additions and 163 deletions
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78
src/webpack/patchWebpack.ts
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@ -53,17 +53,65 @@ if (window[WEBPACK_CHUNK]) {
},
configurable: true
});
// wreq.m is the webpack module factory.
// normally, this is populated via webpackGlobal.push, which we patch below.
// However, Discord has their .m prepopulated.
// Thus, we use this hack to immediately access their wreq.m and patch all already existing factories
Object.defineProperty(Function.prototype, "m", {
set(v: any) {
// When using react devtools or other extensions, we may also catch their webpack here.
// This ensures we actually got the right one
if (new Error().stack?.includes("discord.com")) {
logger.info("Found webpack module factory");
patchFactories(v);
delete (Function.prototype as any).m;
}
Object.defineProperty(this, "m", {
value: v,
configurable: true,
});
},
configurable: true
});
}
function patchPush(webpackGlobal: any) {
function handlePush(chunk: any) {
try {
const modules = chunk[1];
patchFactories(chunk[1]);
} catch (err) {
logger.error("Error in handlePush", err);
}
return handlePush.$$vencordOriginal.call(webpackGlobal, chunk);
}
handlePush.$$vencordOriginal = webpackGlobal.push;
// Webpack overwrites .push with its own push like so: `d.push = n.bind(null, d.push.bind(d));`
// it wraps the old push (`d.push.bind(d)`). this old push is in this case our handlePush.
// If we then repatched the new push, we would end up with recursive patching, which leads to our patches
// being applied multiple times.
// Thus, override bind to use the original push
handlePush.bind = (...args: unknown[]) => handlePush.$$vencordOriginal.bind(...args);
Object.defineProperty(webpackGlobal, "push", {
get: () => handlePush,
set(v) {
handlePush.$$vencordOriginal = v;
},
configurable: true
});
}
function patchFactories(factories: Record<string | number, (module: { exports: any; }, exports: any, require: any) => void>) {
const { subscriptions, listeners } = Vencord.Webpack;
const { patches } = Vencord.Plugins;
for (const id in modules) {
let mod = modules[id];
for (const id in factories) {
let mod = factories[id];
// Discords Webpack chunks for some ungodly reason contain random
// newlines. Cyn recommended this workaround and it seems to work fine,
// however this could potentially break code, so if anything goes weird,
@ -80,7 +128,7 @@ function patchPush(webpackGlobal: any) {
const originalMod = mod;
const patchedBy = new Set();
const factory = modules[id] = function (module, exports, require) {
const factory = factories[id] = function (module, exports, require) {
try {
mod(module, exports, require);
} catch (err) {
@ -221,26 +269,4 @@ function patchPush(webpackGlobal: any) {
}
}
}
} catch (err) {
logger.error("Error in handlePush", err);
}
return handlePush.$$vencordOriginal.call(webpackGlobal, chunk);
}
handlePush.$$vencordOriginal = webpackGlobal.push;
// Webpack overwrites .push with its own push like so: `d.push = n.bind(null, d.push.bind(d));`
// it wraps the old push (`d.push.bind(d)`). this old push is in this case our handlePush.
// If we then repatched the new push, we would end up with recursive patching, which leads to our patches
// being applied multiple times.
// Thus, override bind to use the original push
handlePush.bind = (...args: unknown[]) => handlePush.$$vencordOriginal.bind(...args);
Object.defineProperty(webpackGlobal, "push", {
get: () => handlePush,
set(v) {
handlePush.$$vencordOriginal = v;
},
configurable: true
});
}