tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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CanonicalURLParent.sys.mjs (2099B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 const lazy = {};
      6 
      7 ChromeUtils.defineLazyGetter(lazy, "logConsole", function () {
      8  return console.createInstance({
      9    prefix: "CanonicalURL",
     10    maxLogLevel: Services.prefs.getBoolPref("browser.tabs.notes.debug", false)
     11      ? "Debug"
     12      : "Warn",
     13  });
     14 });
     15 
     16 /**
     17 * Receives canonical URL identifications from CanonicalURLChild and dispatches
     18 * event notifications on the <browser>.
     19 */
     20 export class CanonicalURLParent extends JSWindowActorParent {
     21  /**
     22   * Called when a message is received from the content process.
     23   *
     24   * @param {ReceiveMessageArgument} msg
     25   */
     26  receiveMessage(msg) {
     27    switch (msg.name) {
     28      case "CanonicalURL:Identified":
     29        {
     30          const browser = this.browsingContext?.embedderElement;
     31 
     32          // If we don't have a browser then it went away before we could record,
     33          // so we don't know where the data came from.
     34          if (!browser) {
     35            lazy.logConsole.debug(
     36              "CanonicalURL:Identified: reject due to missing browser"
     37            );
     38            return;
     39          }
     40 
     41          if (!browser.ownerGlobal.gBrowser?.getTabForBrowser(browser)) {
     42            lazy.logConsole.debug(
     43              "CanonicalURL:Identified: reject due to the browser not being a tab browser"
     44            );
     45            return;
     46          }
     47 
     48          const { canonicalUrl, canonicalUrlSources } = msg.data;
     49 
     50          let event = new browser.ownerGlobal.CustomEvent(
     51            "CanonicalURL:Identified",
     52            {
     53              bubbles: true,
     54              cancelable: false,
     55              detail: {
     56                canonicalUrl,
     57                canonicalUrlSources,
     58              },
     59            }
     60          );
     61          browser.dispatchEvent(event);
     62          lazy.logConsole.info("CanonicalURL:Identified", {
     63            canonicalUrl,
     64            canonicalUrlSources,
     65          });
     66        }
     67        break;
     68    }
     69  }
     70 }