tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

extensions-helper.js (3025B)

      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 "use strict";
      6 
      7 const lazy = {};
      8 
      9 ChromeUtils.defineESModuleGetters(lazy, {
     10  FileUtils: "resource://gre/modules/FileUtils.sys.mjs",
     11 });
     12 
     13 const {
     14  PREFERENCES,
     15 } = require("resource://devtools/client/aboutdebugging/src/constants.js");
     16 
     17 exports.parseFileUri = function (url) {
     18  // Strip a leading slash from Windows drive letter URIs.
     19  // file:///home/foo ~> /home/foo
     20  // file:///C:/foo ~> C:/foo
     21  const windowsRegex = /^file:\/\/\/([a-zA-Z]:\/.*)/;
     22  if (windowsRegex.test(url)) {
     23    return windowsRegex.exec(url)[1];
     24  }
     25  return url.slice("file://".length);
     26 };
     27 
     28 exports.getExtensionUuid = function (extension) {
     29  const { manifestURL } = extension;
     30  // Strip off the protocol and rest, leaving us with just the UUID.
     31  return manifestURL ? /moz-extension:\/\/([^/]*)/.exec(manifestURL)[1] : null;
     32 };
     33 
     34 /**
     35 * Open a file picker to allow the user to locate a temporary extension. A temporary
     36 * extension can either be:
     37 * - a folder
     38 * - a .xpi file
     39 * - a .zip file
     40 *
     41 * @param  {Window} win
     42 *         The window object where the filepicker should be opened.
     43 *         Note: We cannot use the global window object here because it is undefined if
     44 *         this module is loaded from a file outside of devtools/client/aboutdebugging/.
     45 *         See browser-loader.sys.mjs `uri.startsWith(baseURI)` for more details.
     46 * @param  {string} message
     47 *         The help message that should be displayed to the user in the filepicker.
     48 * @return {Promise} returns a promise that resolves a File object corresponding to the
     49 *         file selected by the user.
     50 */
     51 exports.openTemporaryExtension = function (win, message) {
     52  return new Promise(resolve => {
     53    const fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
     54    fp.init(win.browsingContext, message, Ci.nsIFilePicker.modeOpen);
     55 
     56    // Try to set the last directory used as "displayDirectory".
     57    try {
     58      const lastDirPath = Services.prefs.getCharPref(
     59        PREFERENCES.TEMPORARY_EXTENSION_PATH,
     60        ""
     61      );
     62      const lastDir = new lazy.FileUtils.File(lastDirPath);
     63      fp.displayDirectory = lastDir;
     64    } catch (e) {
     65      // Empty or invalid value, nothing to handle.
     66    }
     67 
     68    fp.open(res => {
     69      if (res == Ci.nsIFilePicker.returnCancel || !fp.file) {
     70        return;
     71      }
     72      let file = fp.file;
     73      // AddonManager.installTemporaryAddon accepts either
     74      // addon directory or final xpi file.
     75      if (
     76        !file.isDirectory() &&
     77        !file.leafName.endsWith(".xpi") &&
     78        !file.leafName.endsWith(".zip")
     79      ) {
     80        file = file.parent;
     81      }
     82 
     83      // We are about to resolve, store the path to the file for the next call.
     84      Services.prefs.setCharPref(
     85        PREFERENCES.TEMPORARY_EXTENSION_PATH,
     86        file.path
     87      );
     88 
     89      resolve(file);
     90    });
     91  });
     92 };