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/*
* Vencord, a modification for Discord's desktop app
* Copyright (c) 2022 Vendicated and contributors
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { onceDefined } from "@utils/onceDefined";
import electron, { app, BrowserWindowConstructorOptions, Menu } from "electron";
import { readFileSync } from "fs";
import { dirname, join } from "path";
import { initIpc } from "./ipcMain";
import { installExt } from "./ipcMain/extensions";
import { readSettings } from "./ipcMain/index";
console.log("[Vencord] Starting up...");
// Our injector file at app/index.js
const injectorPath = require.main!.filename;
// special discord_arch_electron injection method
const asarName = require.main!.path.endsWith("app.asar") ? "_app.asar" : "app.asar";
// The original app.asar
const asarPath = join(dirname(injectorPath), "..", asarName);
const discordPkg = require(join(asarPath, "package.json"));
require.main!.filename = join(asarPath, discordPkg.main);
// @ts-ignore Untyped method? Dies from cringe
app.setAppPath(asarPath);
if (!process.argv.includes("--vanilla")) {
// Repatch after host updates on Windows
if (process.platform === "win32") {
require("./patchWin32Updater");
const originalBuild = Menu.buildFromTemplate;
Menu.buildFromTemplate = function (template) {
if (template[0]?.label === "&File") {
const { submenu } = template[0];
if (Array.isArray(submenu)) {
submenu.push({
label: "Quit (Hidden)",
visible: false,
acceleratorWorksWhenHidden: true,
accelerator: "Control+Q",
click: () => app.quit()
});
}
}
return originalBuild.call(this, template);
};
}
let settings = {} as any;
try {
settings = JSON.parse(readSettings());
} catch { }
class BrowserWindow extends electron.BrowserWindow {
constructor(options: BrowserWindowConstructorOptions) {
if (options?.webPreferences?.preload && options.title) {
const original = options.webPreferences.preload;
options.webPreferences.preload = join(__dirname, "preload.js");
options.webPreferences.sandbox = false;
options.frame = settings.frameless;
process.env.DISCORD_PRELOAD = original;
super(options);
initIpc(this);
} else super(options);
}
}
Object.assign(BrowserWindow, electron.BrowserWindow);
// esbuild may rename our BrowserWindow, which leads to it being excluded
// from getFocusedWindow(), so this is necessary
// https://github.com/discord/electron/blob/13-x-y/lib/browser/api/browser-window.ts#L60-L62
Object.defineProperty(BrowserWindow, "name", { value: "BrowserWindow", configurable: true });
// Replace electrons exports with our custom BrowserWindow
const electronPath = require.resolve("electron");
delete require.cache[electronPath]!.exports;
require.cache[electronPath]!.exports = {
...electron,
BrowserWindow
};
// Patch appSettings to force enable devtools
onceDefined(global, "appSettings", s =>
s.set("DANGEROUS_ENABLE_DEVTOOLS_ONLY_ENABLE_IF_YOU_KNOW_WHAT_YOURE_DOING", true)
);
process.env.DATA_DIR = join(app.getPath("userData"), "..", "Vencord");
electron.app.whenReady().then(() => {
// Source Maps! Maybe there's a better way but since the renderer is executed
// from a string I don't think any other form of sourcemaps would work
electron.protocol.registerFileProtocol("vencord", ({ url: unsafeUrl }, cb) => {
let url = unsafeUrl.slice("vencord://".length);
if (url.endsWith("/")) url = url.slice(0, -1);
switch (url) {
case "renderer.js.map":
case "preload.js.map":
case "patcher.js.map": // doubt
cb(join(__dirname, url));
break;
default:
cb({ statusCode: 403 });
}
});
try {
if (settings?.enableReactDevtools)
installExt("fmkadmapgofadopljbjfkapdkoienihi")
.then(() => console.info("[Vencord] Installed React Developer Tools"))
.catch(err => console.error("[Vencord] Failed to install React Developer Tools", err));
} catch { }
// Remove CSP
type PolicyResult = Record<string, string[]>;
const parsePolicy = (policy: string): PolicyResult => {
const result: PolicyResult = {};
policy.split(";").forEach(directive => {
const [directiveKey, ...directiveValue] = directive.trim().split(/\s+/g);
if (directiveKey && !Object.prototype.hasOwnProperty.call(result, directiveKey)) {
result[directiveKey] = directiveValue;
}
});
return result;
};
const stringifyPolicy = (policy: PolicyResult): string =>
Object.entries(policy)
.filter(([, values]) => values?.length)
.map(directive => directive.flat().join(" "))
.join("; ");
function patchCsp(headers: Record<string, string[]>, header: string) {
if (header in headers) {
const csp = parsePolicy(headers[header][0]);
for (const directive of ["style-src", "connect-src", "img-src", "font-src", "media-src", "worker-src"]) {
csp[directive] = ["*", "blob:", "data:", "'unsafe-inline'"];
}
// TODO: Restrict this to only imported packages with fixed version.
// Perhaps auto generate with esbuild
csp["script-src"] ??= [];
csp["script-src"].push("'unsafe-eval'", "https://unpkg.com", "https://cdnjs.cloudflare.com");
headers[header] = [stringifyPolicy(csp)];
}
}
electron.session.defaultSession.webRequest.onHeadersReceived(({ responseHeaders, resourceType }, cb) => {
if (responseHeaders) {
if (resourceType === "mainFrame")
patchCsp(responseHeaders, "content-security-policy");
// Fix hosts that don't properly set the css content type, such as
// raw.githubusercontent.com
if (resourceType === "stylesheet")
responseHeaders["content-type"] = ["text/css"];
}
cb({ cancel: false, responseHeaders });
});
});
} else {
console.log("[Vencord] Running in vanilla mode. Not loading Vencord");
}
console.log("[Vencord] Loading original Discord app.asar");
// Legacy Vencord Injector requires "../app.asar". However, because we
// restore the require.main above this is messed up, so monkey patch Module._load to
// redirect such requires
// FIXME: remove this eventually
if (readFileSync(injectorPath, "utf-8").includes('require("../app.asar")')) {
console.warn("[Vencord] [--> WARNING <--] You have a legacy Vencord install. Please reinject");
const Module = require("module");
const loadModule = Module._load;
Module._load = function (path: string) {
if (path === "../app.asar") {
Module._load = loadModule;
arguments[0] = require.main!.filename;
}
return loadModule.apply(this, arguments);
};
} else {
require(require.main!.filename);
}
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