294 lines
10 KiB
JavaScript
Executable File
294 lines
10 KiB
JavaScript
Executable File
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Special Powers code
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jesse Ruderman <jruderman@mozilla.com>
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* Robert Sayre <sayrer@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK *****/
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// Based on:
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// https://bugzilla.mozilla.org/show_bug.cgi?id=549539
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// https://bug549539.bugzilla.mozilla.org/attachment.cgi?id=429661
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// https://developer.mozilla.org/en/XPCOM/XPCOM_changes_in_Gecko_1.9.3
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// http://mxr.mozilla.org/mozilla-central/source/toolkit/components/console/hudservice/HUDService.jsm#3240
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// https://developer.mozilla.org/en/how_to_build_an_xpcom_component_in_javascript
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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Components.utils.import("resource://gre/modules/Services.jsm");
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const CHILD_SCRIPT = "chrome://specialpowers/content/specialpowers.js"
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/**
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* Special Powers Exception - used to throw exceptions nicely
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**/
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function SpecialPowersException(aMsg) {
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this.message = aMsg;
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this.name = "SpecialPowersException";
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}
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SpecialPowersException.prototype.toString = function() {
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return this.name + ': "' + this.message + '"';
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};
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/* XPCOM gunk */
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function SpecialPowersObserver() {
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this._isFrameScriptLoaded = false;
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this._messageManager = Cc["@mozilla.org/globalmessagemanager;1"].
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getService(Ci.nsIChromeFrameMessageManager);
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}
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SpecialPowersObserver.prototype = {
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classDescription: "Special powers Observer for use in testing.",
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classID: Components.ID("{59a52458-13e0-4d93-9d85-a637344f29a1}"),
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contractID: "@mozilla.org/special-powers-observer;1",
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QueryInterface: XPCOMUtils.generateQI([Components.interfaces.nsIObserver]),
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_xpcom_categories: [{category: "profile-after-change", service: true }],
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observe: function(aSubject, aTopic, aData)
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{
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switch (aTopic) {
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case "profile-after-change":
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this.init();
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break;
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case "chrome-document-global-created":
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if (!this._isFrameScriptLoaded) {
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// Register for any messages our API needs us to handle
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this._messageManager.addMessageListener("SPPrefService", this);
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this._messageManager.addMessageListener("SPProcessCrashService", this);
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this._messageManager.addMessageListener("SPPingService", this);
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this._messageManager.loadFrameScript(CHILD_SCRIPT, true);
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this._isFrameScriptLoaded = true;
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}
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break;
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case "xpcom-shutdown":
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this.uninit();
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break;
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case "plugin-crashed":
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case "ipc:content-shutdown":
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function addDumpIDToMessage(propertyName) {
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var id = aSubject.getPropertyAsAString(propertyName);
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if (id) {
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message.dumpIDs.push(id);
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}
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}
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var message = { type: "crash-observed", dumpIDs: [] };
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aSubject = aSubject.QueryInterface(Ci.nsIPropertyBag2);
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if (aTopic == "plugin-crashed") {
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addDumpIDToMessage("pluginDumpID");
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addDumpIDToMessage("browserDumpID");
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} else { // ipc:content-shutdown
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addDumpIDToMessage("dumpID");
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}
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this._messageManager.sendAsyncMessage("SPProcessCrashService", message);
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break;
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}
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},
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init: function()
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{
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var obs = Services.obs;
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obs.addObserver(this, "xpcom-shutdown", false);
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obs.addObserver(this, "chrome-document-global-created", false);
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},
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uninit: function()
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{
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var obs = Services.obs;
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obs.removeObserver(this, "chrome-document-global-created", false);
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this.removeProcessCrashObservers();
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},
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addProcessCrashObservers: function() {
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if (this._processCrashObserversRegistered) {
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return;
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}
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Services.obs.addObserver(this, "plugin-crashed", false);
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Services.obs.addObserver(this, "ipc:content-shutdown", false);
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this._processCrashObserversRegistered = true;
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},
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removeProcessCrashObservers: function() {
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if (!this._processCrashObserversRegistered) {
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return;
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}
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Services.obs.removeObserver(this, "plugin-crashed");
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Services.obs.removeObserver(this, "ipc:content-shutdown");
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this._processCrashObserversRegistered = false;
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},
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getCrashDumpDir: function() {
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if (!this._crashDumpDir) {
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var directoryService = Cc["@mozilla.org/file/directory_service;1"]
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.getService(Ci.nsIProperties);
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this._crashDumpDir = directoryService.get("ProfD", Ci.nsIFile);
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this._crashDumpDir.append("minidumps");
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}
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return this._crashDumpDir;
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},
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deleteCrashDumpFiles: function(aFilenames) {
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var crashDumpDir = this.getCrashDumpDir();
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if (!crashDumpDir.exists()) {
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return false;
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}
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var success = aFilenames.length != 0;
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aFilenames.forEach(function(crashFilename) {
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var file = crashDumpDir.clone();
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file.append(crashFilename);
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if (file.exists()) {
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file.remove(false);
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} else {
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success = false;
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}
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});
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return success;
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},
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findCrashDumpFiles: function(aToIgnore) {
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var crashDumpDir = this.getCrashDumpDir();
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var entries = crashDumpDir.exists() && crashDumpDir.directoryEntries;
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if (!entries) {
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return [];
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}
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var crashDumpFiles = [];
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while (entries.hasMoreElements()) {
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var file = entries.getNext().QueryInterface(Ci.nsIFile);
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var path = String(file.path);
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if (path.match(/\.(dmp|extra)$/) && !aToIgnore[path]) {
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crashDumpFiles.push(path);
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}
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}
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return crashDumpFiles.concat();
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},
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/**
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* messageManager callback function
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* This will get requests from our API in the window and process them in chrome for it
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**/
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receiveMessage: function(aMessage) {
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switch(aMessage.name) {
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case "SPPrefService":
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var prefs = Services.prefs;
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var prefType = aMessage.json.prefType.toUpperCase();
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var prefName = aMessage.json.prefName;
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var prefValue = "prefValue" in aMessage.json ? aMessage.json.prefValue : null;
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if (aMessage.json.op == "get") {
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if (!prefName || !prefType)
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throw new SpecialPowersException("Invalid parameters for get in SPPrefService");
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} else if (aMessage.json.op == "set") {
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if (!prefName || !prefType || prefValue === null)
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throw new SpecialPowersException("Invalid parameters for set in SPPrefService");
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} else if (aMessage.json.op == "clear") {
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if (!prefName)
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throw new SpecialPowersException("Invalid parameters for clear in SPPrefService");
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} else {
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throw new SpecialPowersException("Invalid operation for SPPrefService");
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}
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// Now we make the call
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switch(prefType) {
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case "BOOL":
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if (aMessage.json.op == "get")
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return(prefs.getBoolPref(prefName));
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else
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return(prefs.setBoolPref(prefName, prefValue));
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case "INT":
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if (aMessage.json.op == "get")
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return(prefs.getIntPref(prefName));
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else
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return(prefs.setIntPref(prefName, prefValue));
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case "CHAR":
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if (aMessage.json.op == "get")
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return(prefs.getCharPref(prefName));
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else
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return(prefs.setCharPref(prefName, prefValue));
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case "COMPLEX":
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if (aMessage.json.op == "get")
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return(prefs.getComplexValue(prefName, prefValue[0]));
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else
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return(prefs.setComplexValue(prefName, prefValue[0], prefValue[1]));
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case "":
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if (aMessage.json.op == "clear") {
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prefs.clearUserPref(prefName);
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return;
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}
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}
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break;
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case "SPProcessCrashService":
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switch (aMessage.json.op) {
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case "register-observer":
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this.addProcessCrashObservers();
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break;
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case "unregister-observer":
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this.removeProcessCrashObservers();
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break;
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case "delete-crash-dump-files":
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return this.deleteCrashDumpFiles(aMessage.json.filenames);
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case "find-crash-dump-files":
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return this.findCrashDumpFiles(aMessage.json.crashDumpFilesToIgnore);
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default:
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throw new SpecialPowersException("Invalid operation for SPProcessCrashService");
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}
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break;
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case "SPPingService":
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if (aMessage.json.op == "ping") {
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aMessage.target
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.QueryInterface(Ci.nsIFrameLoaderOwner)
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.frameLoader
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.messageManager
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.sendAsyncMessage("SPPingService", { op: "pong" });
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}
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break;
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default:
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throw new SpecialPowersException("Unrecognized Special Powers API");
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}
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}
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};
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const NSGetFactory = XPCOMUtils.generateNSGetFactory([SpecialPowersObserver]);
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