From efb0ef8b9cd4fe83f6979a2f76218eefb5c0d8b8 Mon Sep 17 00:00:00 2001
From: Ven <vendicated@riseup.net>
Date: Sat, 14 Jan 2023 18:44:02 +0100
Subject: [PATCH] Dev inject: add Mac support (#414)

---
 scripts/runInstaller.mjs | 75 ++++++++++++++++++++++++++++------------
 1 file changed, 52 insertions(+), 23 deletions(-)

diff --git a/scripts/runInstaller.mjs b/scripts/runInstaller.mjs
index a74d01f..0d47464 100644
--- a/scripts/runInstaller.mjs
+++ b/scripts/runInstaller.mjs
@@ -16,7 +16,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-import { execFileSync } from "child_process";
+import { execFileSync, execSync } from "child_process";
 import { createWriteStream, existsSync, mkdirSync, readFileSync, writeFileSync } from "fs";
 import { dirname, join } from "path";
 import { Readable } from "stream";
@@ -24,9 +24,10 @@ import { finished } from "stream/promises";
 import { fileURLToPath } from "url";
 
 const BASE_URL = "https://github.com/Vencord/Installer/releases/latest/download/";
+const INSTALLER_PATH_DARWIN = "VencordInstaller.app/Contents/MacOS/VencordInstaller";
 
-const DIST_DIR = join(dirname(fileURLToPath(import.meta.url)), "..");
-const FILE_DIR = join(DIST_DIR, "dist", "Installer");
+const BASE_DIR = join(dirname(fileURLToPath(import.meta.url)), "..");
+const FILE_DIR = join(BASE_DIR, "dist", "Installer");
 const ETAG_FILE = join(FILE_DIR, "etag.txt");
 
 function getFilename() {
@@ -34,8 +35,7 @@ function getFilename() {
         case "win32":
             return "VencordInstaller.exe";
         case "darwin":
-            // return "VencordInstaller.MacOS.zip";
-            throw new Error("PR Mac support if you want it. Or use a better OS that doesn't suck");
+            return "VencordInstaller.MacOS.zip";
         case "linux":
             return "VencordInstaller-" + (process.env.WAYLAND_DISPLAY ? "wayland" : "x11");
         default:
@@ -49,8 +49,14 @@ async function ensureBinary() {
 
     mkdirSync(FILE_DIR, { recursive: true });
 
-    const installerFile = join(FILE_DIR, filename);
-    const etag = existsSync(installerFile) && existsSync(ETAG_FILE) ? readFileSync(ETAG_FILE, "utf-8") : null;
+    const downloadName = join(FILE_DIR, filename);
+    const outputFile = process.platform === "darwin"
+        ? join(FILE_DIR, "VencordInstaller")
+        : downloadName;
+
+    const etag = existsSync(outputFile) && existsSync(ETAG_FILE)
+        ? readFileSync(ETAG_FILE, "utf-8")
+        : null;
 
     const res = await fetch(BASE_URL + filename, {
         headers: {
@@ -58,40 +64,63 @@ async function ensureBinary() {
             "If-None-Match": etag
         }
     });
+
     if (res.status === 304) {
         console.log("Up to date, not redownloading!");
-        return installerFile;
+        return outputFile;
     }
-
-    if (!res.ok) {
+    if (!res.ok)
         throw new Error(`Failed to download installer: ${res.status} ${res.statusText}`);
-    }
-
-    const newEtag = res.headers.get("etag");
-    writeFileSync(ETAG_FILE, newEtag);
 
-    // WHY DOES NODE FETCH RETURN A WEB STREAM OH MY GOD
-    const body = Readable.fromWeb(res.body);
-    await finished(body.pipe(createWriteStream(installerFile, {
-        mode: 0o755,
-        autoClose: true
-    })));
+    writeFileSync(ETAG_FILE, res.headers.get("etag"));
+
+    if (process.platform === "darwin") {
+        console.log("Unzipping...");
+        const zip = new Uint8Array(await res.arrayBuffer());
+
+        const ff = await import("fflate");
+        const bytes = ff.unzipSync(zip, {
+            filter: f => f.name === INSTALLER_PATH_DARWIN
+        })[INSTALLER_PATH_DARWIN];
+
+        writeFileSync(outputFile, bytes, { mode: 0o755 });
+
+        console.log("Overriding security policy for installer binary (this is required to run it)");
+        console.log("xattr might error, that's okay");
+
+        const logAndRun = cmd => {
+            console.log("Running", cmd);
+            try {
+                execSync(cmd);
+            } catch { }
+        };
+        logAndRun(`sudo spctl --add '${outputFile}' --label "Vencord Installer"`);
+        logAndRun(`sudo xattr -d com.apple.quarantine '${outputFile}'`);
+    } else {
+        // WHY DOES NODE FETCH RETURN A WEB STREAM OH MY GOD
+        const body = Readable.fromWeb(res.body);
+        await finished(body.pipe(createWriteStream(outputFile, {
+            mode: 0o755,
+            autoClose: true
+        })));
+    }
 
     console.log("Finished downloading!");
 
-    return installerFile;
+    return outputFile;
 }
 
 
-console.log("Now running Installer...");
 
 const installerBin = await ensureBinary();
 
+console.log("Now running Installer...");
+
 execFileSync(installerBin, {
     stdio: "inherit",
     env: {
         ...process.env,
-        VENCORD_USER_DATA_DIR: DIST_DIR,
+        VENCORD_USER_DATA_DIR: BASE_DIR,
         VENCORD_DEV_INSTALL: "1"
     }
 });