Vendored version of electron-osx-builder is old and causes notarization to fail

• Version: 22.8.0
• Electron Version: 6.1.5
• Electron Type (current, beta, nightly): current
• electron-updater: 4.1.2
• Target: MacOS

This issue has been mentioned in #4934 and #4656, but the gist is that electron-builder isn’t signing certain binary files, which causes notarization to fail with errors like those below. This issue was fixed in electron/electron-osx-sign#169, but electron-builder vendors a copy of electron-osx-sign here. Updating the vendored version of electron-osx-sign promises to resolve this issue.

"issues": [
    {
      "severity": "error",
      "code": null,
      "path": "MyApp.zip/MyApp.app/Contents/chrome-chromedriver/mac/node_modules/puppeteer/.local-chromium/chrome/Chromium.app/Contents/MacOS/Chromium",
      "message": "The binary is not signed.",
      "docUrl": null,
      "architecture": "x86_64"
    },
    {
      "severity": "error",
      "code": null,
      "path": "MyApp.zip/MyApp.app/Contents/chrome-chromedriver/mac/node_modules/puppeteer/.local-chromium/chrome/Chromium.app/Contents/MacOS/Chromium",
      "message": "The signature does not include a secure timestamp.",
      "docUrl": null,
      "architecture": "x86_64"
    },
    {
      "severity": "error",
      "code": null,
      "path": "MyApp.zip/MyApp.app/Contents/chrome-chromedriver/mac/node_modules/puppeteer/.local-chromium/chrome/Chromium.app/Contents/MacOS/Chromium",
      "message": "The executable does not have the hardened runtime enabled.",
      "docUrl": null,
      "architecture": "x86_64"
    },
...

[manderson-te]

Dare I ask, why vendor electron-osx-sign at all?

[manderson-te]

Thankfully, I was able to develop a workaround for the issue:

1. Add electron-osx-sign as a dev dependency: yarn add --dev electron-osx-sign
2. Write an afterSign script that imports electron-osx-sign and invokes signAsync: https://github.com/electron/electron-osx-sign#from-the-api. This technically means that you’ll be signing everything twice (once with the broken version of electron-osx-sign that is bundled with electron-builder and once with the newer version you installed previously), but it did work for my case.

Here’s what my afterSign.js script looks like:

const electronBuilderConfig = require('../electron-builder.json');
const signAsync = require('electron-osx-sign').signAsync;

export.default = async function(context) {
    const { electronPlatformName, appOutDir } = context;  
    if (electronPlatformName !== 'darwin') {
        console.log('Skipping afterSign script for non-darwin target: ' + electronPlatformName);
        return;
    }
    if (electronBuilderConfig.mac.identity === null) {
        console.log('Skipping afterSign script because identity explicitly set to null');
        return;
    }
    const appName = context.packager.appInfo.productFilename;
    await signAgainFunction(appOutDir, appName);
}

// electron-builder vendors its own private version of electron-osx-sign, but unfortunately it is
// broken (https://github.com/electron-userland/electron-builder/issues/5190).  To get around this,
// we install electron-osx-sign ourselves and invoke it in electron-builder's afterSign callback:
// https://www.electron.build/configuration/configuration#aftersign.
async function signAgainFunction(appOutDir, appName) {
    const identity = 'Developer ID Application: ' + electronBuilderConfig.mac.identity;
    const entitlements = electronBuilderConfig.mac.entitlements;
    const entitlementsInherit = electronBuilderConfig.mac.entitlementsInherit;
    const hardenedRuntime = electronBuilderConfig.mac.hardenedRuntime;
    const gatekeeperAssess = electronBuilderConfig.mac.gatekeeperAssess;
    await signAsync({
        app: `${appOutDir}/${appName}.app`,
        entitlements,
        hardenedRuntime,
        identity,
        "entitlements-inherit": entitlementsInherit,
        "gatekeeper-assess": gatekeeperAssess
    }).then(() => {
        console.log("Second application of electron-osx-sign succeeded!");
    }).catch((err) => {
        console.error("Second application of electron-osx-sign failed");
        console.error(err);
    });
}

Popular guides for notarizing electron applications instruct you to create an afterSign.js file anyways, so this workaround isn’t a terrible inconvenience.