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293 lines
10 KiB
293 lines
10 KiB
/* ***** 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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