michael@0: // This Source Code Form is subject to the terms of the Mozilla Public
michael@0: // License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0: // file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: this.EXPORTED_SYMBOLS = ["PermissionsUtils"];
michael@0: 
michael@0: const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
michael@0: 
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: 
michael@0: 
michael@0: let gImportedPrefBranches = new Set();
michael@0: 
michael@0: function importPrefBranch(aPrefBranch, aPermission, aAction) {
michael@0:   let list = Services.prefs.getChildList(aPrefBranch, {});
michael@0: 
michael@0:   for (let pref of list) {
michael@0:     let hosts = "";
michael@0:     try {
michael@0:       hosts = Services.prefs.getCharPref(pref);
michael@0:     } catch (e) {}
michael@0: 
michael@0:     if (!hosts)
michael@0:       continue;
michael@0: 
michael@0:     hosts = hosts.split(",");
michael@0: 
michael@0:     for (let host of hosts) {
michael@0:       try {
michael@0:         let uri = Services.io.newURI("http://" + host, null, null);
michael@0:         Services.perms.add(uri, aPermission, aAction);
michael@0:       } catch (e) {}
michael@0:     }
michael@0: 
michael@0:     Services.prefs.setCharPref(pref, "");
michael@0:   }
michael@0: }
michael@0: 
michael@0: 
michael@0: this.PermissionsUtils = {
michael@0:   /**
michael@0:    * Import permissions from perferences to the Permissions Manager. After being
michael@0:    * imported, all processed permissions will be set to an empty string.
michael@0:    * Perferences are only processed once during the application's
michael@0:    * lifetime - it's safe to call this multiple times without worrying about
michael@0:    * doing unnecessary work, as the preferences branch will only be processed
michael@0:    * the first time.
michael@0:    *
michael@0:    * @param aPrefBranch  Preferences branch to import from. The preferences
michael@0:    *                     under this branch can specify whitelist (ALLOW_ACTION)
michael@0:    *                     or blacklist (DENY_ACTION) additions using perference
michael@0:    *                     names of the form:
michael@0:    *                     * <BRANCH>.whitelist.add.<ID>
michael@0:    *                     * <BRANCH>.blacklist.add.<ID>
michael@0:    *                     Where <ID> can be any valid preference name.
michael@0:    *                     The value is expected to be a comma separated list of
michael@0:    *                     host named. eg:
michael@0:    *                     * something.example.com
michael@0:    *                     * foo.exmaple.com,bar.example.com
michael@0:    *
michael@0:    * @param aPermission Permission name to be passsed to the Permissions
michael@0:    *                    Manager.
michael@0:    */
michael@0:   importFromPrefs: function(aPrefBranch, aPermission) {
michael@0:     if (!aPrefBranch.endsWith("."))
michael@0:       aPrefBranch += ".";
michael@0: 
michael@0:     // Ensure we only import this pref branch once.
michael@0:     if (gImportedPrefBranches.has(aPrefBranch))
michael@0:      return;
michael@0: 
michael@0:     importPrefBranch(aPrefBranch + "whitelist.add", aPermission,
michael@0:                      Services.perms.ALLOW_ACTION);
michael@0:     importPrefBranch(aPrefBranch + "blacklist.add", aPermission,
michael@0:                      Services.perms.DENY_ACTION);
michael@0: 
michael@0:     gImportedPrefBranches.add(aPrefBranch);
michael@0:   }
michael@0: };