st Desktop Site" mode enabled. The UA for the desktop mode
            // is set inside Gecko with a simple string replace, so we can use
            // that as a check, see https://searchfox.org/mozilla-central/rev/89d33e1c3b0a57a9377b4815c2f4b58d933b7c32/mobile/android/chrome/geckoview/GeckoViewSettingsChild.js#23-28
            let isMobileWithDesktopMode =
              override.currentPlatform == "android" &&
              header.value.includes("X11; Linux x86_64");

            if (!isMobileWithDesktopMode) {
              header.value = uaTransformer(header.value);
            }
          }
        }
      }
      return { requestHeaders: details.requestHeaders };
    };

    browser.webRequest.onBeforeSendHeaders.addListener(
      listener,
      { urls: matches },
      ["blocking", "requestHeaders"]
    );

    const listeners = { onBeforeSendHeaders: listener };
    if (blocks) {
      const blistener = details => {
        return { cancel: true };
      };

      browser.webRequest.onBeforeRequest.addListener(
        blistener,
        { urls: blocks },
        ["blocking"]
      );

      listeners.onBeforeRequest = blistener;
    }
    this._activeListeners.set(override, listeners);
    override.active = true;
  }

  onOverrideConfigChanged(override) {
    // Check whether the override should be hidden from about:compat.
    override.hidden = override.config.hidden;

    // Setting the override's permanent pref overrules whether it is hidden.
    if (override.permanentPrefEnabled !== undefined) {
      override.hidden = !override.permanentPrefEnabled;
    }

    // Also check whether the override should be active.
    let shouldBeActive = true;

    // Overrides can be force-deactivated by their permanent preference.
    if (override.permanentPrefEnabled === false) {
      shouldBeActive = false;
    }

    // Overrides gated behind an experiment the user is not part of do not
    // have to be activated, unless they are gathering telemetry, or the
    // user has force-enabled them with their permanent pref.
    if (override.config.experiment && override.permanentPrefEnabled !== true) {
      shouldBeActive = false;
    }

    if (shouldBeActive) {
      this.enableOverride(override);
    } else {
      this.disableOverride(override);
    }

    if (this._overridesEnabled) {
      this._aboutCompatBroker.portsToAboutCompatTabs.broadcast({
        overridesChanged: this._aboutCompatBroker.filterOverrides(
          this._availableOverrides
        ),
      });
    }
  }

  async registerUAOverrides() {
    const platformMatches = ["all"];
    let platformInfo = await browser.runtime.getPlatformInfo();
    platformMatches.push(platformInfo.os == "android" ? "android" : "desktop");

    for (const override of this._availableOverrides) {
      if (platformMatches.includes(override.platform)) {
        override.availableOnPlatform = true;
        override.currentPlatform = platformInfo.os;

        // If there is a specific about:config preference governing
        // this override, monitor its state.
        const pref = override.config.permanentPref;
        override.permanentPrefEnabled =
          pref && (await browser.aboutConfigPrefs.getPref(pref));
        if (pref) {
          const checkOverridePref = () => {
            browser.aboutConfigPrefs.getPref(pref).then(value => {
              override.permanentPrefEnabled = value;
              this.onOverrideConfigChanged(override);
            });
          };
          browser.aboutConfigPrefs.onPrefChange.addListener(
            checkOverridePref,
            pref
          );
        }

        this.onOverrideConfigChanged(override);
      }
    }

    this._overridesEnabled = true;
    this._aboutCompatBroker.portsToAboutCompatTabs.broadcast({
      overridesChanged: this._aboutCompatBroker.filterOverrides(
        this._availableOverrides
      ),
    });
  }

  unregisterUAOverrides() {
    for (const override of this._availableOverrides) {
      this.disableOverride(override);
    }

    this._overridesEnabled = false;
    this._aboutCompatBroker.portsToAboutCompatTabs.broadcast({
      overridesChanged: false,
    });
  }

  disableOverride(override) {
    if (!override.active) {
      return;
    }

    const listeners = this._activeListeners.get(override);
    for (const [name, listener] of Object.entries(listeners)) {
      browser.webRequest[name].removeListener(listener);
    }
    override.active = false;
    this._activeListeners.delete(override);
  }
}

module.exports = UAOverrides;
PK
       !<‰D>¢       manifest.json{
  "manifest_version": 2,
  "name": "Web Compatibility Interventions",
  "description": "Urgent post-release fixes for web compatibility.",
  "version": "27.1.0",
  "applications": {
    "gecko": {
      "id": "webcompat@mozilla.org",
      "strict_min_version": "59.0b5"
    }
  },

  "experiment_apis": {
    "aboutConfigPrefs": {
      "schema": "experiment-apis/aboutConfigPrefs.json",
      "parent": {
        "scopes": ["addon_parent"],
        "script": "experiment-apis/aboutConfigPrefs.js",
        "paths": [["aboutConfigPrefs"]]
      }
    },
    "appConstants": {
      "schema": "experiment-apis/appConstants.json",
      "parent": {
        "scopes": ["addon_parent"],
        "script": "experiment-apis/appConstants.js",
        "paths": [["appConstants"]]
      }
    },
    "aboutPage": {
      "schema": "about-compat/aboutPage.json",
      "parent": {
        "scopes": ["addon_parent"],
        "script": "about-compat/aboutPage.js",
        "events": ["startup"]
      }
    },
    "matchPatterns": {
      "schema": "experiment-apis/matchPatterns.json",
      "child": {
        "scopes": ["addon_child"],
        "script": "experiment-apis/matchPatterns.js",
        "paths": [["matchPatterns"]]
      }
    },
    "systemManufacturer": {
      "schema": "experiment-apis/systemManufacturer.json",
      "child": {
        "scopes": ["addon_child"],
        "script": "experiment-apis/systemManufacturer.js",
        "paths": [["systemManufacturer"]]
      }
    },
    "trackingProtection": {
      "schema": "experiment-apis/trackingProtection.json",
      "parent": {
        "scopes": ["addon_parent"],
        "script": "experiment-apis/trackingProtection.js",
        "paths": [["trackingProtection"]]
      }
    }
  },

  "content_security_policy": "script-src 'self' 'sha256-MmZkN2QaIHhfRWPZ8TVRjijTn5Ci1iEabtTEWrt9CCo='; default-src 'self'; base-uri moz-extension://*; object-src 'none'",

  "permissions": [
    "tabs",
    "webNavigation",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],

  "background": {
    "scripts": [
      "lib/module_shim.js",
      "lib/messaging_helper.js",
      "lib/intervention_helpers.js",
      "lib/ua_helpers.js",
      "data/injections.js",
      "data/shims.js",
      "data/ua_overrides.js",
      "lib/about_compat_broker.js",
      "lib/custom_functions.js",
      "lib/injections.js",
      "lib/shims.js",
      "lib/ua_overrides.js",
      "run.js"
    ]
  },

  "web_accessible_resources": [
    "shims/addthis-angular.js",
    "shims/adform.js",
    "shims/adnexus-prebid.js",
    "shims/adsafeprotected-ima.js",
    "shims/apstag.js",
    "shims/bmauth.js",
    "shims/chartbeat.js",
    "shims/criteo.js",
    "shims/cxense.js",
    "shims/eluminate.js",
    "shims/empty-script.js",
    "shims/empty-shim.txt",
    "shims/facebook-sdk.js",
    "shims/facebook.svg",
    "shims/google-ads.js",
    "shims/google-analytics-and-tag-manager.js",
    "shims/google-analytics-ecommerce-plugin.js",
    "shims/google-analytics-legacy.js",
    "shims/google-ima.js",
    "shims/google-page-ad.js",
    "shims/google-publisher-tags.js",
    "shims/google-safeframe.html",
    "shims/iaspet.js",
    "shims/live-test-shim.js",
    "shims/moat.js",
    "shims/mochitest-shim-1.js",
    "shims/mochitest-shim-2.js",
    "shims/mochitest-shim-3.js",
    "shims/optimizely.js",
    "shims/play.svg",
    "shims/rambler-authenticator.js",
    "shims/rich-relevance.js",
    "shims/stackblitz.js",
    "shims/tracking-pixel.png",
    "shims/vast2.xml",
    "shims/vast3.xml",
    "shims/vidible.js",
    "shims/vmad.xml"
  ]
}
PK
       !<pyü]U  U     run.js/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

/* globals AboutCompatBroker, AVAILABLE_INJECTIONS, AVAILABLE_SHIMS,
           AVAILABLE_PIP_OVERRIDES, AVAILABLE_UA_OVERRIDES, CUSTOM_FUNCTIONS,
           Injections, Shims, UAOverrides */

let injections, uaOverrides;

try {
  injections = new Injections(AVAILABLE_INJECTIONS, CUSTOM_FUNCTIONS);
  injections.bootup();
} catch (e) {
  console.error("Inj