Vencord Standalone without git/node (#148)

src/ipcMain/extensions.ts

@@ -19,33 +19,15 @@
 import { session } from "electron";
 import { unzip } from "fflate";
 import { constants as fsConstants } from "fs";
-import { access,mkdir, rm, writeFile } from "fs/promises";
-import https from "https";
+import { access, mkdir, rm, writeFile } from "fs/promises";
 import { join } from "path";
 
 import { DATA_DIR } from "./constants";
 import { crxToZip } from "./crxToZip";
+import { get } from "./simpleGet";
 
 const extensionCacheDir = join(DATA_DIR, "ExtensionCache");
 
-function download(url: string) {
-    return new Promise<Buffer>((resolve, reject) => {
-        https.get(url, res => {
-            const { statusCode, statusMessage, headers } = res;
-            if (statusCode! >= 400)
-                return void reject(`${statusCode}: ${statusMessage} - ${url}`);
-            if (statusCode! >= 300)
-                return void resolve(download(headers.location!));
-
-            const chunks = [] as Buffer[];
-            res.on("error", reject);
-
-            res.on("data", chunk => chunks.push(chunk));
-            res.once("end", () => resolve(Buffer.concat(chunks)));
-        });
-    });
-}
-
 async function extract(data: Buffer, outDir: string) {
     await mkdir(outDir, { recursive: true });
     return new Promise<void>((resolve, reject) => {
@@ -86,7 +68,7 @@ export async function installExt(id: string) {
         await access(extDir, fsConstants.F_OK);
     } catch (err) {
         const url = `https://clients2.google.com/service/update2/crx?response=redirect&acceptformat=crx2,crx3&x=id%3D${id}%26uc&prodversion=32`;
-        const buf = await download(url);
+        const buf = await get(url);
         await extract(crxToZip(buf), extDir);
     }
 

src/ipcMain/index.ts

@@ -18,19 +18,18 @@
 
 import "./updater";
 
-import monacoHtml from "@fileContent/../components/monacoWin.html;base64";
-import { app, BrowserWindow, desktopCapturer, ipcMain, shell } from "electron";
+import { BrowserWindow, desktopCapturer, ipcMain, shell } from "electron";
 import { mkdirSync, readFileSync, watch } from "fs";
 import { open, readFile, writeFile } from "fs/promises";
 import { join } from "path";
 
+import monacoHtml from "~fileContent/../components/monacoWin.html;base64";
+
 import { debounce } from "../utils/debounce";
 import IpcEvents from "../utils/IpcEvents";
 import { Queue } from "../utils/Queue";
 import { ALLOWED_PROTOCOLS, QUICKCSS_PATH, SETTINGS_DIR, SETTINGS_FILE } from "./constants";
 
-
-
 mkdirSync(SETTINGS_DIR, { recursive: true });
 
 function readCss() {

src/ipcMain/simpleGet.ts

@@ -0,0 +1,37 @@
+/*
+ * 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 https from "https";
+
+export function get(url: string, options: https.RequestOptions = {}) {
+    return new Promise<Buffer>((resolve, reject) => {
+        https.get(url, options, res => {
+            const { statusCode, statusMessage, headers } = res;
+            if (statusCode! >= 400)
+                return void reject(`${statusCode}: ${statusMessage} - ${url}`);
+            if (statusCode! >= 300)
+                return void resolve(get(headers.location!, options));
+
+            const chunks = [] as Buffer[];
+            res.on("error", reject);
+
+            res.on("data", chunk => chunks.push(chunk));
+            res.once("end", () => resolve(Buffer.concat(chunks)));
+        });
+    });
+}

src/ipcMain/updater/common.ts

@@ -0,0 +1,59 @@
+/*
+ * 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 { createHash } from "crypto";
+import { createReadStream } from "fs";
+import { join } from "path";
+
+export async function calculateHashes() {
+    const hashes = {} as Record<string, string>;
+
+    await Promise.all(
+        ["patcher.js", "preload.js", "renderer.js"].map(file => new Promise<void>(r => {
+            const fis = createReadStream(join(__dirname, file));
+            const hash = createHash("sha1", { encoding: "hex" });
+            fis.once("end", () => {
+                hash.end();
+                hashes[file] = hash.read();
+                r();
+            });
+            fis.pipe(hash);
+        }))
+    );
+
+    return hashes;
+}
+
+export function serializeErrors(func: (...args: any[]) => any) {
+    return async function () {
+        try {
+            return {
+                ok: true,
+                value: await func(...arguments)
+            };
+        } catch (e: any) {
+            return {
+                ok: false,
+                error: e instanceof Error ? {
+                    // prototypes get lost, so turn error into plain object
+                    ...e
+                } : e
+            };
+        }
+    };
+}

src/ipcMain/updater/git.ts

@@ -17,13 +17,12 @@
 */
 
 import { execFile as cpExecFile } from "child_process";
-import { createHash } from "crypto";
 import { ipcMain } from "electron";
-import { createReadStream } from "fs";
 import { join } from "path";
 import { promisify } from "util";
 
-import IpcEvents from "../utils/IpcEvents";
+import IpcEvents from "../../utils/IpcEvents";
+import { calculateHashes, serializeErrors } from "./common";
 
 const VENCORD_SRC_DIR = join(__dirname, "..");
 
@@ -35,44 +34,6 @@ function git(...args: string[]) {
     });
 }
 
-async function calculateHashes() {
-    const hashes = {} as Record<string, string>;
-
-    await Promise.all(
-        ["patcher.js", "preload.js", "renderer.js"].map(file => new Promise<void>(r => {
-            const fis = createReadStream(join(__dirname, file));
-            const hash = createHash("sha1", { encoding: "hex" });
-            fis.once("end", () => {
-                hash.end();
-                hashes[file] = hash.read();
-                r();
-            });
-            fis.pipe(hash);
-        }))
-    );
-
-    return hashes;
-}
-
-function serializeErrors(func: (...args: any[]) => any) {
-    return async function () {
-        try {
-            return {
-                ok: true,
-                value: await func(...arguments)
-            };
-        } catch (e: any) {
-            return {
-                ok: false,
-                error: e instanceof Error ? {
-                    // prototypes get lost, so turn error into plain object
-                    ...e
-                } : e
-            };
-        }
-    };
-}
-
 async function getRepo() {
     const res = await git("remote", "get-url", "origin");
     return res.stdout.trim()

src/ipcMain/updater/http.ts

@@ -0,0 +1,86 @@
+/*
+ * 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 { ipcMain } from "electron";
+import { writeFile } from "fs/promises";
+import { join } from "path";
+
+import gitHash from "~git-hash";
+import gitRemote from "~git-remote";
+
+import { VENCORD_USER_AGENT } from "../../utils/constants";
+import IpcEvents from "../../utils/IpcEvents";
+import { get } from "../simpleGet";
+import { calculateHashes, serializeErrors } from "./common";
+
+const API_BASE = `https://api.github.com/repos/${gitRemote}`;
+let PendingUpdates = [] as [string, Buffer][];
+
+async function githubGet(endpoint: string) {
+    return get(API_BASE + endpoint, {
+        headers: {
+            Accept: "application/vnd.github+json",
+            // "All API requests MUST include a valid User-Agent header.
+            // Requests with no User-Agent header will be rejected."
+            "User-Agent": VENCORD_USER_AGENT,
+            // todo: perhaps add support for (optional) api token?
+            // unauthorised rate limit is 60 reqs/h
+            // https://github.com/settings/tokens/new?description=Vencord%20Updater
+        }
+    });
+}
+
+async function calculateGitChanges() {
+    const res = await githubGet(`/compare/${gitHash}...HEAD`);
+
+    const data = JSON.parse(res.toString("utf-8"));
+    return data.commits.map(c => ({
+        // github api only sends the long sha
+        hash: c.sha.slice(0, 7),
+        author: c.author.login,
+        message: c.commit.message
+    }));
+}
+
+async function fetchUpdates() {
+    const release = await githubGet("/releases/latest");
+
+    const data = JSON.parse(release.toString());
+    const hash = data.name.slice(data.name.lastIndexOf(" ") + 1);
+    if (hash === gitHash)
+        return true;
+
+    await Promise.all(data.assets.map(async ({ name, browser_download_url }) => {
+        if (["patcher.js", "preload.js", "renderer.js"].some(s => name.startsWith(s))) {
+            PendingUpdates.push([name, await get(browser_download_url)]);
+        }
+    }));
+    return true;
+}
+
+async function applyUpdates() {
+    await Promise.all(PendingUpdates.map(([name, data]) => writeFile(join(__dirname, name), data)));
+    PendingUpdates = [];
+    return true;
+}
+
+ipcMain.handle(IpcEvents.GET_HASHES, serializeErrors(calculateHashes));
+ipcMain.handle(IpcEvents.GET_REPO, serializeErrors(() => `https://github.com/${gitRemote}`));
+ipcMain.handle(IpcEvents.GET_UPDATES, serializeErrors(calculateGitChanges));
+ipcMain.handle(IpcEvents.UPDATE, serializeErrors(fetchUpdates));
+ipcMain.handle(IpcEvents.BUILD, serializeErrors(applyUpdates));

src/ipcMain/updater/index.ts

@@ -0,0 +1,19 @@
+/*
+ * 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(IS_STANDALONE ? "./http" : "./git");