Software: Apache. PHP/5.5.15 uname -a: Windows NT SVR-DMZ 6.1 build 7600 (Windows Server 2008 R2 Enterprise Edition) i586 SYSTEM Safe-mode: OFF (not secure) C:\Intranet\C\Archivos de programa\Mozilla Firefox\components\ drwxrwxrwx | |
| Viewing file: Select action/file-type: /* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the nsSessionStore component.
*
* The Initial Developer of the Original Code is
* Simon Bünzli <zeniko@gmail.com>
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dietrich Ayala <dietrich@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
* Session Storage and Restoration
*
* Overview
* This service keeps track of a user's session, storing the various bits
* required to return the browser to it's current state. The relevant data is
* stored in memory, and is periodically saved to disk in a file in the
* profile directory. The service is started at first window load, in
* delayedStartup, and will restore the session from the data received from
* the nsSessionStartup service.
*/
/* :::::::: Constants and Helpers ::::::::::::::: */
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;
const STATE_STOPPED = 0;
const STATE_RUNNING = 1;
const STATE_QUITTING = -1;
const STATE_DISABLED = -2;
const STATE_STOPPED_STR = "stopped";
const STATE_RUNNING_STR = "running";
const PRIVACY_NONE = 0;
const PRIVACY_ENCRYPTED = 1;
const PRIVACY_FULL = 2;
const NOTIFY_WINDOWS_RESTORED = "sessionstore-windows-restored";
// global notifications observed
const OBSERVING = [
"domwindowopened", "domwindowclosed",
"quit-application-requested", "quit-application-granted",
"quit-application", "browser:purge-session-history"
];
/*
XUL Window properties to (re)store
Restored in restoreDimensions()
*/
const WINDOW_ATTRIBUTES = ["width", "height", "screenX", "screenY", "sizemode"];
/*
Hideable window features to (re)store
Restored in restoreWindowFeatures()
*/
const WINDOW_HIDEABLE_FEATURES = [
"menubar", "toolbar", "locationbar",
"personalbar", "statusbar", "scrollbars"
];
/*
docShell capabilities to (re)store
Restored in restoreHistory()
eg: browser.docShell["allow" + aCapability] = false;
*/
const CAPABILITIES = [
"Subframes", "Plugins", "Javascript", "MetaRedirects", "Images"
];
// module for JSON conversion (needed for the nsISessionStore API)
Cu.import("resource://gre/modules/JSON.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
function debug(aMsg) {
aMsg = ("SessionStore: " + aMsg).replace(/\S{80}/g, "$&\n");
Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService)
.logStringMessage(aMsg);
}
/* :::::::: The Service ::::::::::::::: */
function SessionStoreService() {
}
SessionStoreService.prototype = {
classDescription: "Browser Session Store Service",
contractID: "@mozilla.org/browser/sessionstore;1",
classID: Components.ID("{5280606b-2510-4fe0-97ef-9b5a22eafe6b}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsISessionStore,
Ci.nsIDOMEventListener,
Ci.nsIObserver,
Ci.nsISupportsWeakReference]),
// xul:tab attributes to (re)store (extensions might want to hook in here)
xulAttributes: [],
// set default load state
_loadState: STATE_STOPPED,
// minimal interval between two save operations (in milliseconds)
_interval: 10000,
// when crash recovery is disabled, session data is not written to disk
_resume_from_crash: true,
// During the initial restore tracks the number of windows yet to be restored
_restoreCount: 0,
// time in milliseconds (Date.now()) when the session was last written to file
_lastSaveTime: 0,
// states for all currently opened windows
_windows: {},
// in case the last closed window ain't a navigator:browser one
_lastWindowClosed: null,
// not-"dirty" windows usually don't need to have their data updated
_dirtyWindows: {},
// flag all windows as dirty
_dirty: false,
/* ........ Global Event Handlers .............. */
/**
* Initialize the component
*/
init: function sss_init(aWindow) {
if (this._loadState == STATE_DISABLED)
return;
if (!aWindow || this._loadState == STATE_RUNNING) {
// make sure that all browser windows which try to initialize
// SessionStore are really tracked by it
if (aWindow && (!aWindow.__SSi || !this._windows[aWindow.__SSi]))
this.onLoad(aWindow);
return;
}
this._prefBranch = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefService).getBranch("browser.");
this._prefBranch.QueryInterface(Ci.nsIPrefBranch2);
var observerService = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
// if the service is disabled, do not init
if (!this._prefBranch.getBoolPref("sessionstore.enabled")) {
// Notify observers that the sessionstore has done everything it is going to.
observerService.notifyObservers(null, NOTIFY_WINDOWS_RESTORED, "");
// Mark as disabled so we don't even try to initialise again.
this._loadState = STATE_DISABLED;
return;
}
OBSERVING.forEach(function(aTopic) {
observerService.addObserver(this, aTopic, true);
}, this);
// get interval from prefs - used often, so caching/observing instead of fetching on-demand
this._interval = this._prefBranch.getIntPref("sessionstore.interval");
this._prefBranch.addObserver("sessionstore.interval", this, true);
// get crash recovery state from prefs and allow for proper reaction to state changes
this._resume_from_crash = this._prefBranch.getBoolPref("sessionstore.resume_from_crash");
this._prefBranch.addObserver("sessionstore.resume_from_crash", this, true);
// observe prefs changes so we can modify stored data to match
this._prefBranch.addObserver("sessionstore.max_tabs_undo", this, true);
// get file references
var dirService = Cc["@mozilla.org/file/directory_service;1"].
getService(Ci.nsIProperties);
this._sessionFile = dirService.get("ProfD", Ci.nsILocalFile);
this._sessionFileBackup = this._sessionFile.clone();
this._sessionFile.append("sessionstore.js");
this._sessionFileBackup.append("sessionstore.bak");
// get string containing session state
var iniString;
try {
var ss = Cc["@mozilla.org/browser/sessionstartup;1"].
getService(Ci.nsISessionStartup);
if (ss.doRestore())
iniString = ss.state;
}
catch(ex) { dump(ex + "\n"); } // no state to restore, which is ok
if (iniString) {
try {
// parse the session state into JS objects
this._initialState = this._safeEval(iniString);
// set bool detecting crash
this._lastSessionCrashed =
this._initialState.session && this._initialState.session.state &&
this._initialState.session.state == STATE_RUNNING_STR;
// restore the features of the first window from localstore.rdf
WINDOW_ATTRIBUTES.forEach(function(aAttr) {
delete this._initialState.windows[0][aAttr];
}, this);
delete this._initialState.windows[0].hidden;
}
catch (ex) { debug("The session file is invalid: " + ex); }
}
// if last session crashed, backup the session
if (this._lastSessionCrashed) {
try {
this._writeFile(this._sessionFileBackup, iniString);
}
catch (ex) { } // nothing else we can do here
}
// remove the session data files if crash recovery is disabled
if (!this._resume_from_crash)
this._clearDisk();
// As this is called at delayedStartup, restoration must be initiated here
this.onLoad(aWindow);
},
/**
* Called on application shutdown, after notifications:
* quit-application-granted, quit-application
*/
_uninit: function sss_uninit() {
if (this._doResumeSession()) { // save all data for session resuming
this.saveState(true);
}
else { // discard all session related data
this._clearDisk();
}
// Make sure to break our cycle with the save timer
if (this._saveTimer) {
this._saveTimer.cancel();
this._saveTimer = null;
}
},
/**
* Handle notifications
*/
observe: function sss_observe(aSubject, aTopic, aData) {
// for event listeners
var _this = this;
switch (aTopic) {
case "domwindowopened": // catch new windows
aSubject.addEventListener("load", function(aEvent) {
aEvent.currentTarget.removeEventListener("load", arguments.callee, false);
_this.onLoad(aEvent.currentTarget);
}, false);
break;
case "domwindowclosed": // catch closed windows
this.onClose(aSubject);
break;
case "quit-application-requested":
// get a current snapshot of all windows
this._forEachBrowserWindow(function(aWindow) {
this._collectWindowData(aWindow);
});
this._dirtyWindows = [];
this._dirty = false;
break;
case "quit-application-granted":
// freeze the data at what we've got (ignoring closing windows)
this._loadState = STATE_QUITTING;
break;
case "quit-application":
if (aData == "restart")
this._prefBranch.setBoolPref("sessionstore.resume_session_once", true);
this._loadState = STATE_QUITTING; // just to be sure
this._uninit();
break;
case "browser:purge-session-history": // catch sanitization
this._forEachBrowserWindow(function(aWindow) {
Array.forEach(aWindow.getBrowser().browsers, function(aBrowser) {
delete aBrowser.parentNode.__SS_data;
});
});
this._lastWindowClosed = null;
this._clearDisk();
// also clear all data about closed tabs
for (ix in this._windows) {
this._windows[ix]._closedTabs = [];
}
// give the tabbrowsers a chance to clear their histories first
var win = this._getMostRecentBrowserWindow();
if (win)
win.setTimeout(function() { _this.saveState(true); }, 0);
else
this.saveState(true);
break;
case "nsPref:changed": // catch pref changes
switch (aData) {
// if the user decreases the max number of closed tabs they want
// preserved update our internal states to match that max
case "sessionstore.max_tabs_undo":
var ix;
for (ix in this._windows) {
this._windows[ix]._closedTabs.splice(this._prefBranch.getIntPref("sessionstore.max_tabs_undo"));
}
break;
case "sessionstore.interval":
this._interval = this._prefBranch.getIntPref("sessionstore.interval");
// reset timer and save
if (this._saveTimer) {
this._saveTimer.cancel();
this._saveTimer = null;
}
this.saveStateDelayed(null, -1);
break;
case "sessionstore.resume_from_crash":
this._resume_from_crash = this._prefBranch.getBoolPref("sessionstore.resume_from_crash");
// either create the file with crash recovery information or remove it
// (when _loadState is not STATE_RUNNING, that file is used for session resuming instead)
if (this._resume_from_crash)
this.saveState(true);
else if (this._loadState == STATE_RUNNING)
this._clearDisk();
break;
}
break;
case "timer-callback": // timer call back for delayed saving
this._saveTimer = null;
this.saveState();
break;
}
},
/* ........ Window Event Handlers .............. */
/**
* Implement nsIDOMEventListener for handling various window and tab events
*/
handleEvent: function sss_handleEvent(aEvent) {
switch (aEvent.type) {
case "load":
case "pageshow":
this.onTabLoad(aEvent.currentTarget.ownerDocument.defaultView, aEvent.currentTarget, aEvent);
break;
case "input":
case "DOMAutoComplete":
this.onTabInput(aEvent.currentTarget.ownerDocument.defaultView, aEvent.currentTarget, aEvent);
break;
case "TabOpen":
case "TabClose":
var panelID = aEvent.originalTarget.linkedPanel;
var tabpanel = aEvent.originalTarget.ownerDocument.getElementById(panelID);
if (aEvent.type == "TabOpen") {
this.onTabAdd(aEvent.currentTarget.ownerDocument.defaultView, tabpanel);
}
else {
this.onTabClose(aEvent.currentTarget.ownerDocument.defaultView, aEvent.originalTarget);
this.onTabRemove(aEvent.currentTarget.ownerDocument.defaultView, tabpanel);
}
break;
case "TabSelect":
var tabpanels = aEvent.currentTarget.mPanelContainer;
this.onTabSelect(aEvent.currentTarget.ownerDocument.defaultView, tabpanels);
break;
}
},
/**
* If it's the first window load since app start...
* - determine if we're reloading after a crash or a forced-restart
* - restore window state
* - restart downloads
* Set up event listeners for this window's tabs
* @param aWindow
* Window reference
*/
onLoad: function sss_onLoad(aWindow) {
// return if window has already been initialized
if (aWindow && aWindow.__SSi && this._windows[aWindow.__SSi])
return;
// ignore non-browser windows and windows opened while shutting down
if (aWindow.document.documentElement.getAttribute("windowtype") != "navigator:browser" ||
this._loadState == STATE_QUITTING)
return;
// assign it a unique identifier (timestamp)
aWindow.__SSi = "window" + Date.now();
// and create its data object
this._windows[aWindow.__SSi] = { tabs: [], selected: 0, _closedTabs: [] };
// perform additional initialization when the first window is loading
if (this._loadState == STATE_STOPPED) {
this._loadState = STATE_RUNNING;
this._lastSaveTime = Date.now();
// don't save during the first ten seconds
// (until most of the pages have been restored)
this.saveStateDelayed(aWindow, 10000);
// restore a crashed session resp. resume the last session if requested
if (this._initialState) {
// make sure that the restored tabs are first in the window
this._initialState._firstTabs = true;
this._restoreCount = this._initialState.windows ? this._initialState.windows.length : 0;
this.restoreWindow(aWindow, this._initialState, this._isCmdLineEmpty(aWindow));
delete this._initialState;
}
else {
// Nothing to restore, notify observers things are complete.
var observerService = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
observerService.notifyObservers(null, NOTIFY_WINDOWS_RESTORED, "");
}
}
var tabbrowser = aWindow.getBrowser();
var tabpanels = tabbrowser.mPanelContainer;
// add tab change listeners to all already existing tabs
for (var i = 0; i < tabpanels.childNodes.length; i++) {
this.onTabAdd(aWindow, tabpanels.childNodes[i], true);
}
// notification of tab add/remove/selection
tabbrowser.addEventListener("TabOpen", this, true);
tabbrowser.addEventListener("TabClose", this, true);
tabbrowser.addEventListener("TabSelect", this, true);
},
/**
* On window close...
* - remove event listeners from tabs
* - save all window data
* @param aWindow
* Window reference
*/
onClose: function sss_onClose(aWindow) {
// ignore windows not tracked by SessionStore
if (!aWindow.__SSi || !this._windows[aWindow.__SSi]) {
return;
}
if (this.windowToFocus && this.windowToFocus == aWindow) {
delete this.windowToFocus;
}
var tabbrowser = aWindow.getBrowser();
var tabpanels = tabbrowser.mPanelContainer;
tabbrowser.removeEventListener("TabOpen", this, true);
tabbrowser.removeEventListener("TabClose", this, true);
tabbrowser.removeEventListener("TabSelect", this, true);
if (this._loadState == STATE_RUNNING) { // window not closed during a regular shut-down
// update all window data for a last time
this._collectWindowData(aWindow);
// preserve this window's data (in case it was the last navigator:browser)
this._lastWindowClosed = this._windows[aWindow.__SSi];
this._lastWindowClosed.title = aWindow.content.document.title;
this._updateCookies([this._lastWindowClosed]);
// clear this window from the list
delete this._windows[aWindow.__SSi];
// save the state without this window to disk
this.saveStateDelayed();
}
for (var i = 0; i < tabpanels.childNodes.length; i++) {
this.onTabRemove(aWindow, tabpanels.childNodes[i], true);
}
// cache the window state until the window is completely gone
aWindow.__SS_dyingCache = this._windows[aWindow.__SSi] || this._lastWindowClosed;
// reset the _tab property to avoid keeping the tab's XUL element alive
// longer than we need it
var tabCount = aWindow.__SS_dyingCache.tabs.length;
for (var t = 0; t < tabCount; t++) {
delete aWindow.__SS_dyingCache.tabs[t]._tab;
}
delete aWindow.__SSi;
},
/**
* set up listeners for a new tab
* @param aWindow
* Window reference
* @param aPanel
* TabPanel reference
* @param aNoNotification
* bool Do not save state if we're updating an existing tab
*/
onTabAdd: function sss_onTabAdd(aWindow, aPanel, aNoNotification) {
aPanel.addEventListener("load", this, true);
aPanel.addEventListener("pageshow", this, true);
aPanel.addEventListener("input", this, true);
aPanel.addEventListener("DOMAutoComplete", this, true);
if (!aNoNotification) {
this.saveStateDelayed(aWindow);
}
},
/**
* remove listeners for a tab
* @param aWindow
* Window reference
* @param aPanel
* TabPanel reference
* @param aNoNotification
* bool Do not save state if we're updating an existing tab
*/
onTabRemove: function sss_onTabRemove(aWindow, aPanel, aNoNotification) {
aPanel.removeEventListener("load", this, true);
aPanel.removeEventListener("pageshow", this, true);
aPanel.removeEventListener("input", this, true);
aPanel.removeEventListener("DOMAutoComplete", this, true);
delete aPanel.__SS_data;
delete aPanel.__SS_text;
if (!aNoNotification) {
this.saveStateDelayed(aWindow);
}
},
/**
* When a tab closes, collect it's properties
* @param aWindow
* Window reference
* @param aTab
* TabPanel reference
*/
onTabClose: function sss_onTabClose(aWindow, aTab) {
// notify the tabbrowser that the tab state will be retrieved for the last time
// (so that extension authors can easily set data on soon-to-be-closed tabs)
var event = aWindow.document.createEvent("Events");
event.initEvent("SSTabClosing", true, false);
aTab.dispatchEvent(event);
var maxTabsUndo = this._prefBranch.getIntPref("sessionstore.max_tabs_undo");
// don't update our internal state if we don't have to
if (maxTabsUndo == 0) {
return;
}
// make sure that the tab related data is up-to-date
var tabState = this._collectTabData(aTab);
this._updateTextAndScrollDataForTab(aWindow, aTab.linkedBrowser, tabState);
// reset the _tab property to avoid keeping the tab's XUL element alive
// longer than we need it
delete tabState._tab;
// store closed-tab data for undo
if (tabState.entries.length > 1 || tabState.entries[0].url != "about:blank") {
this._windows[aWindow.__SSi]._closedTabs.unshift({
state: tabState,
title: aTab.getAttribute("label"),
image: aTab.getAttribute("image"),
pos: aTab._tPos
});
var length = this._windows[aWindow.__SSi]._closedTabs.length;
if (length > maxTabsUndo)
this._windows[aWindow.__SSi]._closedTabs.splice(maxTabsUndo, length - maxTabsUndo);
}
},
/**
* When a tab loads, save state.
* @param aWindow
* Window reference
* @param aPanel
* TabPanel reference
* @param aEvent
* Event obj
*/
onTabLoad: function sss_onTabLoad(aWindow, aPanel, aEvent) {
// react on "load" and solitary "pageshow" events (the first "pageshow"
// following "load" is too late for deleting the data caches)
if (aEvent.type != "load" && !aEvent.persisted) {
return;
}
delete aPanel.__SS_data;
delete aPanel.__SS_text;
this.saveStateDelayed(aWindow);
// attempt to update the current URL we send in a crash report
this._updateCrashReportURL(aWindow);
},
/**
* Called when a tabpanel sends the "input" notification
* stores textarea data
* @param aWindow
* Window reference
* @param aPanel
* TabPanel reference
* @param aEvent
* Event obj
*/
onTabInput: function sss_onTabInput(aWindow, aPanel, aEvent) {
if (this._saveTextData(aPanel, aEvent.originalTarget)) {
this.saveStateDelayed(aWindow, 3000);
}
},
/**
* When a tab is selected, save session data
* @param aWindow
* Window reference
* @param aPanels
* TabPanel reference
*/
onTabSelect: function sss_onTabSelect(aWindow, aPanels) {
if (this._loadState == STATE_RUNNING) {
this._windows[aWindow.__SSi].selected = aPanels.selectedIndex;
this.saveStateDelayed(aWindow);
// attempt to update the current URL we send in a crash report
this._updateCrashReportURL(aWindow);
}
},
/* ........ nsISessionStore API .............. */
getBrowserState: function sss_getBrowserState() {
return this._toJSONString(this._getCurrentState());
},
setBrowserState: function sss_setBrowserState(aState) {
var window = this._getMostRecentBrowserWindow();
if (!window) {
this._openWindowWithState("(" + aState + ")");
return;
}
// close all other browser windows
this._forEachBrowserWindow(function(aWindow) {
if (aWindow != window) {
aWindow.close();
}
});
// restore to the given state
this.restoreWindow(window, "(" + aState + ")", true);
},
getWindowState: function sss_getWindowState(aWindow) {
if (!aWindow.__SSi && aWindow.__SS_dyingCache)
return this._toJSONString({ windows: [aWindow.__SS_dyingCache] });
return this._toJSONString(this._getWindowState(aWindow));
},
setWindowState: function sss_setWindowState(aWindow, aState, aOverwrite) {
this.restoreWindow(aWindow, "(" + aState + ")", aOverwrite);
},
getTabState: function sss_getTabState(aTab) {
var tabState = this._collectTabData(aTab);
var window = aTab.ownerDocument.defaultView;
this._updateTextAndScrollDataForTab(window, aTab.linkedBrowser, tabState);
return this._toJSONString(tabState);
},
setTabState: function sss_setTabState(aTab, aState) {
var tabState = this._safeEval("(" + aState + ")");
if (!tabState.entries || !tabState.entries.length) {
Components.returnCode = Cr.NS_ERROR_INVALID_ARG;
return;
}
tabState._tab = aTab;
var window = aTab.ownerDocument.defaultView;
this.restoreHistoryPrecursor(window, [tabState], 0, 0, 0);
},
duplicateTab: function sss_duplicateTab(aWindow, aTab) {
var tabState = this._collectTabData(aTab, true);
var sourceWindow = aTab.ownerDocument.defaultView;
this._updateTextAndScrollDataForTab(sourceWindow, aTab.linkedBrowser, tabState, true);
var newTab = aWindow.getBrowser().addTab();
tabState._tab = newTab;
this.restoreHistoryPrecursor(aWindow, [tabState], 0, 0, 0);
return newTab;
},
getClosedTabCount: function sss_getClosedTabCount(aWindow) {
if (!aWindow.__SSi && aWindow.__SS_dyingCache)
return aWindow.__SS_dyingCache._closedTabs.length;
if (!aWindow.__SSi)
return 0; // not a browser window, or not otherwise tracked by SS.
return this._windows[aWindow.__SSi]._closedTabs.length;
},
closedTabNameAt: function sss_closedTabNameAt(aWindow, aIx) {
var tabs;
if (aWindow.__SSi && aWindow.__SSi in this._windows)
tabs = this._windows[aWindow.__SSi]._closedTabs;
else if (aWindow.__SS_dyingCache)
tabs = aWindow.__SS_dyingCache._closedTabs;
else
Components.returnCode = Cr.NS_ERROR_INVALID_ARG;
return tabs && aIx in tabs ? tabs[aIx].title : null;
},
getClosedTabData: function sss_getClosedTabDataAt(aWindow) {
if (!aWindow.__SSi && aWindow.__SS_dyingCache)
return this._toJSONString(aWindow.__SS_dyingCache._closedTabs);
return this._toJSONString(this._windows[aWindow.__SSi]._closedTabs);
},
undoCloseTab: function sss_undoCloseTab(aWindow, aIndex) {
var closedTabs = this._windows[aWindow.__SSi]._closedTabs;
// default to the most-recently closed tab
aIndex = aIndex || 0;
if (aIndex in closedTabs) {
var browser = aWindow.getBrowser();
// fetch the data of closed tab, while removing it from the array
var closedTab = closedTabs.splice(aIndex, 1).shift();
var closedTabState = closedTab.state;
// create a new tab
closedTabState._tab = browser.addTab();
// restore the tab's position
browser.moveTabTo(closedTabState._tab, closedTab.pos);
// restore tab content
this.restoreHistoryPrecursor(aWindow, [closedTabState], 1, 0, 0);
// focus the tab's content area
var content = browser.getBrowserForTab(closedTabState._tab).contentWindow;
aWindow.setTimeout(function() { content.focus(); }, 0);
}
else {
Components.returnCode = Cr.NS_ERROR_INVALID_ARG;
}
},
getWindowValue: function sss_getWindowValue(aWindow, aKey) {
if (aWindow.__SSi) {
var data = this._windows[aWindow.__SSi].extData || {};
return data[aKey] || "";
}
else if (aWindow.__SS_dyingCache) {
data = aWindow.__SS_dyingCache.extData || {};
return data[aKey] || "";
}
else {
Components.returnCode = Cr.NS_ERROR_INVALID_ARG;
}
},
setWindowValue: function sss_setWindowValue(aWindow, aKey, aStringValue) {
if (aWindow.__SSi) {
if (!this._windows[aWindow.__SSi].extData) {
this._windows[aWindow.__SSi].extData = {};
}
this._windows[aWindow.__SSi].extData[aKey] = aStringValue;
this.saveStateDelayed(aWindow);
}
else {
Components.returnCode = Cr.NS_ERROR_INVALID_ARG;
}
},
deleteWindowValue: function sss_deleteWindowValue(aWindow, aKey) {
if (this._windows[aWindow.__SSi].extData[aKey])
delete this._windows[aWindow.__SSi].extData[aKey];
else
Components.returnCode = Cr.NS_ERROR_INVALID_ARG;
},
getTabValue: function sss_getTabValue(aTab, aKey) {
var data = aTab.__SS_extdata || {};
return data[aKey] || "";
},
setTabValue: function sss_setTabValue(aTab, aKey, aStringValue) {
if (!aTab.__SS_extdata) {
aTab.__SS_extdata = {};
}
aTab.__SS_extdata[aKey] = aStringValue;
this.saveStateDelayed(aTab.ownerDocument.defaultView);
},
deleteTabValue: function sss_deleteTabValue(aTab, aKey) {
if (aTab.__SS_extdata[aKey])
delete aTab.__SS_extdata[aKey];
else
Components.returnCode = Cr.NS_ERROR_INVALID_ARG;
},
persistTabAttribute: function sss_persistTabAttribute(aName) {
this.xulAttributes.push(aName);
this.saveStateDelayed();
},
/* ........ Saving Functionality .............. */
/**
* Store all session data for a window
* @param aWindow
* Window reference
*/
_saveWindowHistory: function sss_saveWindowHistory(aWindow) {
var tabbrowser = aWindow.getBrowser();
var tabs = tabbrowser.mTabs;
var tabsData = this._windows[aWindow.__SSi].tabs = [];
for (var i = 0; i < tabs.length; i++)
tabsData.push(this._collectTabData(tabs[i]));
this._windows[aWindow.__SSi].selected = tabbrowser.mTabBox.selectedIndex + 1;
},
/**
* Collect data related to a single tab
* @param aTab
* tabbrowser tab
* @param aFullData
* always return privacy sensitive data (use with care)
* @returns object
*/
_collectTabData: function sss_collectTabData(aTab, aFullData) {
var tabData = { entries: [], index: 0 };
var browser = aTab.linkedBrowser;
if (!browser || !browser.currentURI)
// can happen when calling this function right after .addTab()
return tabData;
else if (browser.parentNode.__SS_data && browser.parentNode.__SS_data._tab)
// use the data to be restored when the tab hasn't been completely loaded
return browser.parentNode.__SS_data;
var history = null;
try {
history = browser.sessionHistory;
}
catch (ex) { } // this could happen if we catch a tab during (de)initialization
if (history && browser.parentNode.__SS_data &&
browser.parentNode.__SS_data.entries[history.index] && !aFullData) {
tabData = browser.parentNode.__SS_data;
tabData.index = history.index + 1;
}
else if (history && history.count > 0) {
for (var j = 0; j < history.count; j++)
tabData.entries.push(this._serializeHistoryEntry(history.getEntryAtIndex(j, false),
aFullData));
tabData.index = history.index + 1;
// make sure not to cache privacy sensitive data which shouldn't get out
if (!aFullData)
browser.parentNode.__SS_data = tabData;
}
else {
tabData.entries[0] = { url: browser.currentURI.spec };
tabData.index = 1;
}
var disallow = [];
for (var i = 0; i < CAPABILITIES.length; i++)
if (!browser.docShell["allow" + CAPABILITIES[i]])
disallow.push(CAPABILITIES[i]);
if (disallow.length > 0)
tabData.disallow = disallow.join(",");
else if (tabData.disallow)
delete tabData.disallow;
if (this.xulAttributes.length > 0) {
var xulattr = Array.filter(aTab.attributes, function(aAttr) {
return this.xulAttributes.indexOf(aAttr.name) > -1;
}, this).map(function(aAttr) {
return aAttr.name + "=" + encodeURI(aAttr.value);
});
tabData.xultab = xulattr.join(" ");
}
if (aTab.__SS_extdata)
tabData.extData = aTab.__SS_extdata;
else if (tabData.extData)
delete tabData.extData;
return tabData;
},
/**
* Get an object that is a serialized representation of a History entry
* Used for data storage
* @param aEntry
* nsISHEntry instance
* @param aFullData
* always return privacy sensitive data (use with care)
* @returns object
*/
_serializeHistoryEntry: function sss_serializeHistoryEntry(aEntry, aFullData) {
var entry = { url: aEntry.URI.spec };
if (aEntry.title && aEntry.title != entry.url) {
entry.title = aEntry.title;
}
if (aEntry.isSubFrame) {
entry.subframe = true;
}
if (!(aEntry instanceof Ci.nsISHEntry)) {
return entry;
}
var cacheKey = aEntry.cacheKey;
if (cacheKey && cacheKey instanceof Ci.nsISupportsPRUint32 &&
cacheKey.data != 0) {
// XXXbz would be better to have cache keys implement
// nsISerializable or something.
entry.cacheKey = cacheKey.data;
}
entry.ID = aEntry.ID;
if (aEntry.contentType)
entry.contentType = aEntry.contentType;
var x = {}, y = {};
aEntry.getScrollPosition(x, y);
if (x.value != 0 || y.value != 0)
entry.scroll = x.value + "," + y.value;
try {
var prefPostdata = this._prefBranch.getIntPref("sessionstore.postdata");
if (aEntry.postData && (aFullData ||
prefPostdata && this._checkPrivacyLevel(aEntry.URI.schemeIs("https")))) {
aEntry.postData.QueryInterface(Ci.nsISeekableStream).
seek(Ci.nsISeekableStream.NS_SEEK_SET, 0);
var stream = Cc["@mozilla.org/binaryinputstream;1"].
createInstance(Ci.nsIBinaryInputStream);
stream.setInputStream(aEntry.postData);
var postBytes = stream.readByteArray(stream.available());
var postdata = String.fromCharCode.apply(null, postBytes);
if (aFullData || prefPostdata == -1 ||
postdata.replace(/^(Content-.*\r\n)+(\r\n)*/, "").length <=
prefPostdata) {
// We can stop doing base64 encoding once our serialization into JSON
// is guaranteed to handle all chars in strings, including embedded
// nulls.
entry.postdata_b64 = btoa(postdata);
}
}
}
catch (ex) { debug(ex); } // POSTDATA is tricky - especially since some extensions don't get it right
if (aEntry.owner) {
// Not catching anything specific here, just possible errors
// from writeCompoundObject and the like.
try {
var binaryStream = Cc["@mozilla.org/binaryoutputstream;1"].
createInstance(Ci.nsIObjectOutputStream);
var pipe = Cc["@mozilla.org/pipe;1"].createInstance(Ci.nsIPipe);
pipe.init(false, false, 0, 0xffffffff, null);
binaryStream.setOutputStream(pipe.outputStream);
binaryStream.writeCompoundObject(aEntry.owner, Ci.nsISupports, true);
binaryStream.close();
// Now we want to read the data from the pipe's input end and encode it.
var scriptableStream = Cc["@mozilla.org/binaryinputstream;1"].
createInstance(Ci.nsIBinaryInputStream);
scriptableStream.setInputStream(pipe.inputStream);
var ownerBytes =
scriptableStream.readByteArray(scriptableStream.available());
// We can stop doing base64 encoding once our serialization into JSON
// is guaranteed to handle all chars in strings, including embedded
// nulls.
entry.owner_b64 = btoa(String.fromCharCode.apply(null, ownerBytes));
}
catch (ex) { debug(ex); }
}
if (!(aEntry instanceof Ci.nsISHContainer)) {
return entry;
}
if (aEntry.childCount > 0) {
entry.children = [];
for (var i = 0; i < aEntry.childCount; i++) {
var child = aEntry.GetChildAt(i);
if (child) {
entry.children.push(this._serializeHistoryEntry(child, aFullData));
}
else { // to maintain the correct frame order, insert a dummy entry
entry.children.push({ url: "about:blank" });
}
}
}
return entry;
},
/**
* Updates the current document's cache of user entered text data
* @param aPanel
* TabPanel reference
* @param aTextarea
* HTML content element
* @returns bool
*/
_saveTextData: function sss_saveTextData(aPanel, aTextarea) {
var id = aTextarea.id ? "#" + aTextarea.id :
aTextarea.name;
if (!id
|| !(aTextarea instanceof Ci.nsIDOMHTMLTextAreaElement
|| aTextarea instanceof Ci.nsIDOMHTMLInputElement &&
aTextarea.type != "password" && aTextarea.type != "file")) {
return false; // nothing to save
}
if (/^(?:\d+\|)+/.test(id)) {
// text could be restored into a subframe, so skip it (see bug 463206)
return false;
}
if (!aPanel.__SS_text) {
aPanel.__SS_text = [];
aPanel.__SS_text._refs = [];
}
// get the index of the reference to the text element
var ix = aPanel.__SS_text._refs.indexOf(aTextarea);
if (ix == -1) {
// we haven't registered this text element yet - do so now
aPanel.__SS_text._refs.push(aTextarea);
ix = aPanel.__SS_text.length;
}
else if (!aPanel.__SS_text[ix].cache) {
// we've already marked this text element for saving (the cache is
// added during save operations and would have to be updated here)
return false;
}
// determine the frame we're in and encode it into the textarea's ID
var content = aTextarea.ownerDocument.defaultView;
while (content != content.top) {
var frames = content.parent.frames;
for (var i = 0; i < frames.length && frames[i] != content; i++);
id = i + "|" + id;
content = content.parent;
}
// mark this element for saving
aPanel.__SS_text[ix] = { id: id, element: aTextarea };
return true;
},
/**
* go through all tabs and store the current scroll positions
* and innerHTML content of WYSIWYG editors
* @param aWindow
* Window reference
*/
_updateTextAndScrollData: function sss_updateTextAndScrollData(aWindow) {
var browsers = aWindow.getBrowser().browsers;
for (var i = 0; i < browsers.length; i++) {
try {
var tabData = this._windows[aWindow.__SSi].tabs[i];
if (tabData.entries.length == 0 ||
browsers[i].parentNode.__SS_data && browsers[i].parentNode.__SS_data._tab)
continue; // ignore incompletely initialized tabs
this._updateTextAndScrollDataForTab(aWindow, browsers[i], tabData);
}
catch (ex) { debug(ex); } // get as much data as possible, ignore failures (might succeed the next time)
}
},
/**
* go through all frames and store the current scroll positions
* and innerHTML content of WYSIWYG editors
* @param aWindow
* Window reference
* @param aBrowser
* single browser reference
* @param aTabData
* tabData object to add the information to
* @param aFullData
* always return privacy sensitive data (use with care)
*/
_updateTextAndScrollDataForTab:
function sss_updateTextAndScrollDataForTab(aWindow, aBrowser, aTabData, aFullData) {
var text = [];
if (aBrowser.parentNode.__SS_text &&
(aFullData || this._checkPrivacyLevel(aBrowser.currentURI.schemeIs("https")))) {
for (var ix = aBrowser.parentNode.__SS_text.length - 1; ix >= 0; ix--) {
var data = aBrowser.parentNode.__SS_text[ix];
if (!data.cache)
// update the text element's value before adding it to the data structure
data.cache = encodeURI(data.element.value);
text.push(data.id + "=" + data.cache);
}
}
if (aBrowser.currentURI.spec == "about:config")
text = ["#textbox=" + encodeURI(aBrowser.contentDocument.getElementById("textbox").
wrappedJSObject.value)];
if (text.length > 0)
aTabData.text = text.join(" ");
else if (aTabData.text)
delete aTabData.text;
var tabIndex = (aTabData.index || aTabData.entries.length) - 1;
// entry data needn't exist for tabs just initialized with an incomplete session state
if (aTabData.entries[tabIndex])
this._updateTextAndScrollDataForFrame(aWindow, aBrowser.contentWindow,
aTabData.entries[tabIndex], aFullData);
},
/**
* go through all subframes and store the current scroll positions
* and innerHTML content of WYSIWYG editors
* @param aWindow
* Window reference
* @param aContent
* frame reference
* @param aData
* part of a tabData object to add the information to
* @param aFullData
* always return privacy sensitive data (use with care)
*/
_updateTextAndScrollDataForFrame:
function sss_updateTextAndScrollDataForFrame(aWindow, aContent, aData, aFullData) {
for (var i = 0; i < aContent.frames.length; i++) {
if (aData.children && aData.children[i])
this._updateTextAndScrollDataForFrame(aWindow, aContent.frames[i], aData.children[i], aFullData);
}
// designMode is undefined e.g. for XUL documents (as about:config)
var isHTTPS = this._getURIFromString((aContent.parent || aContent).
document.location.href).schemeIs("https");
if ((aContent.document.designMode || "") == "on" &&
(aFullData || this._checkPrivacyLevel(isHTTPS))) {
if (aData.innerHTML === undefined && !aFullData) {
// we get no "input" events from iframes - listen for keypress here
var _this = this;
aContent.addEventListener("keypress", function(aEvent) {
_this.saveStateDelayed(aWindow, 3000); }, true);
}
aData.innerHTML = aContent.document.body.innerHTML;
}
aData.scroll = aContent.scrollX + "," + aContent.scrollY;
},
/**
* store all hosts for a URL
* @param aWindow
* Window reference
*/
_updateCookieHosts: function sss_updateCookieHosts(aWindow) {
var hosts = this._windows[aWindow.__SSi]._hosts = {};
// get all possible subdomain levels for a given URL
var _this = this;
function extractHosts(aEntry) {
if (/^https?:\/\/(?:[^@\/\s]+@)?([\w.-]+)/.test(aEntry.url) &&
!hosts[RegExp.$1] && _this._checkPrivacyLevel(_this._getURIFromString(aEntry.url).schemeIs("https"))) {
var host = RegExp.$1;
var ix;
for (ix = host.indexOf(".") + 1; ix; ix = host.indexOf(".", ix) + 1) {
hosts[host.substr(ix)] = true;
}
hosts[host] = true;
}
else if (/^file:\/\/([^\/]*)/.test(aEntry.url)) {
hosts[RegExp.$1] = true;
}
if (aEntry.children) {
aEntry.children.forEach(extractHosts);
}
}
this._windows[aWindow.__SSi].tabs.forEach(function(aTabData) { aTabData.entries.forEach(extractHosts); });
},
/**
* Serialize cookie data
* @param aWindows
* array of Window references
*/
_updateCookies: function sss_updateCookies(aWindows) {
var cookiesEnum = Cc["@mozilla.org/cookiemanager;1"].
getService(Ci.nsICookieManager).enumerator;
// collect the cookies per window
for (var i = 0; i < aWindows.length; i++)
aWindows[i].cookies = [];
// MAX_EXPIRY should be 2^63-1, but JavaScript can't handle that precision
var MAX_EXPIRY = Math.pow(2, 62);
while (cookiesEnum.hasMoreElements()) {
var cookie = cookiesEnum.getNext().QueryInterface(Ci.nsICookie2);
if (cookie.isSession && this._checkPrivacyLevel(cookie.isSecure)) {
var jscookie = null;
aWindows.forEach(function(aWindow) {
if (aWindow._hosts && aWindow._hosts[cookie.rawHost]) {
// serialize the cookie when it's first needed
if (!jscookie) {
jscookie = { host: cookie.host, value: cookie.value };
// only add attributes with non-default values (saving a few bits)
if (cookie.path) jscookie.path = cookie.path;
if (cookie.name) jscookie.name = cookie.name;
if (cookie.isSecure) jscookie.secure = true;
if (cookie.isHttpOnly) jscookie.httponly = true;
if (cookie.expiry < MAX_EXPIRY) jscookie.expiry = cookie.expiry;
}
aWindow.cookies.push(jscookie);
}
});
}
}
// don't include empty cookie sections
for (i = 0; i < aWindows.length; i++)
if (aWindows[i].cookies.length == 0)
delete aWindows[i].cookies;
},
/**
* Store window dimensions, visibility, sidebar
* @param aWindow
* Window reference
*/
_updateWindowFeatures: function sss_updateWindowFeatures(aWindow) {
var winData = this._windows[aWindow.__SSi];
WINDOW_ATTRIBUTES.forEach(function(aAttr) {
winData[aAttr] = this._getWindowDimension(aWindow, aAttr);
}, this);
var hidden = WINDOW_HIDEABLE_FEATURES.filter(function(aItem) {
return aWindow[aItem] && !aWindow[aItem].visible;
});
if (hidden.length != 0)
winData.hidden = hidden.join(",");
else if (winData.hidden)
delete winData.hidden;
var sidebar = aWindow.document.getElementById("sidebar-box").getAttribute("sidebarcommand");
if (sidebar)
winData.sidebar = sidebar;
else if (winData.sidebar)
delete winData.sidebar;
},
/**
* serialize session data as Ini-formatted string
* @returns string
*/
_getCurrentState: function sss_getCurrentState() {
var activeWindow = this._getMostRecentBrowserWindow();
if (this._loadState == STATE_RUNNING) {
// update the data for all windows with activities since the last save operation
this._forEachBrowserWindow(function(aWindow) {
if (this._dirty || this._dirtyWindows[aWindow.__SSi] || aWindow == activeWindow) {
this._collectWindowData(aWindow);
}
else { // always update the window features (whose change alone never triggers a save operation)
this._updateWindowFeatures(aWindow);
}
}, this);
this._dirtyWindows = [];
this._dirty = false;
}
// collect the data for all windows
var total = [], windows = [];
var ix;
for (ix in this._windows) {
total.push(this._windows[ix]);
windows.push(ix);
}
this._updateCookies(total);
// if no browser window remains open, return the state of the last closed window
if (total.length == 0 && this._lastWindowClosed) {
total.push(this._lastWindowClosed);
}
if (activeWindow) {
this.activeWindowSSiCache = activeWindow.__SSi || "";
}
ix = this.activeWindowSSiCache ? windows.indexOf(this.activeWindowSSiCache) : -1;
return { windows: total, selectedWindow: ix + 1 };
},
/**
* serialize session data for a window
* @param aWindow
* Window reference
* @returns string
*/
_getWindowState: function sss_getWindowState(aWindow) {
if (this._loadState == STATE_RUNNING) {
this._collectWindowData(aWindow);
}
var total = [this._windows[aWindow.__SSi]];
this._updateCookies(total);
return { windows: total };
},
_collectWindowData: function sss_collectWindowData(aWindow) {
// update the internal state data for this window
this._saveWindowHistory(aWindow);
this._updateTextAndScrollData(aWindow);
this._updateCookieHosts(aWindow);
this._updateWindowFeatures(aWindow);
this._dirtyWindows[aWindow.__SSi] = false;
},
/* ........ Restoring Functionality .............. */
/**
* restore features to a single window
* @param aWindow
* Window reference
* @param aState
* JS object or its eval'able source
* @param aOverwriteTabs
* bool overwrite existing tabs w/ new ones
* @param aFollowUp
* bool this isn't the restoration of the first window
*/
restoreWindow: function sss_restoreWindow(aWindow, aState, aOverwriteTabs, aFollowUp) {
if (!aFollowUp) {
this.windowToFocus = aWindow;
}
// initialize window if necessary
if (aWindow && (!aWindow.__SSi || !this._windows[aWindow.__SSi]))
this.onLoad(aWindow);
try {
var root = typeof aState == "string" ? this._safeEval(aState) : aState;
if (!root.windows[0]) {
this._notifyIfAllWindowsRestored();
return; // nothing to restore
}
}
catch (ex) { // invalid state object - don't restore anything
debug(ex);
this._notifyIfAllWindowsRestored();
return;
}
var winData;
if (!aState.selectedWindow) {
aState.selectedWindow = 0;
}
// open new windows for all further window entries of a multi-window session
// (unless they don't contain any tab data)
for (var w = 1; w < root.windows.length; w++) {
winData = root.windows[w];
if (winData && winData.tabs && winData.tabs[0]) {
var window = this._openWindowWithState({ windows: [winData] });
if (w == aState.selectedWindow - 1) {
this.windowToFocus = window;
}
}
}
winData = root.windows[0];
if (!winData.tabs) {
winData.tabs = [];
}
var tabbrowser = aWindow.getBrowser();
var openTabCount = aOverwriteTabs ? tabbrowser.browsers.length : -1;
var newTabCount = winData.tabs.length;
for (var t = 0; t < newTabCount; t++) {
winData.tabs[t]._tab = t < openTabCount ? tabbrowser.mTabs[t] : tabbrowser.addTab();
// when resuming at startup: add additionally requested pages to the end
if (!aOverwriteTabs && root._firstTabs) {
tabbrowser.moveTabTo(winData.tabs[t]._tab, t);
}
}
// when overwriting tabs, remove all superflous ones
for (t = openTabCount - 1; t >= newTabCount; t--) {
tabbrowser.removeTab(tabbrowser.mTabs[t]);
}
if (aOverwriteTabs) {
this.restoreWindowFeatures(aWindow, winData);
}
if (winData.cookies) {
this.restoreCookies(winData.cookies);
}
if (winData.extData) {
if (!this._windows[aWindow.__SSi].extData) {
this._windows[aWindow.__SSi].extData = {}
}
for (var key in winData.extData) {
this._windows[aWindow.__SSi].extData[key] = winData.extData[key];
}
}
if (winData._closedTabs && (root._firstTabs || aOverwriteTabs)) {
this._windows[aWindow.__SSi]._closedTabs = winData._closedTabs;
}
this.restoreHistoryPrecursor(aWindow, winData.tabs, (aOverwriteTabs ?
(parseInt(winData.selected) || 1) : 0), 0, 0);
this._notifyIfAllWindowsRestored();
},
/**
* Manage history restoration for a window
* @param aTabs
* Array of tab data
* @param aCurrentTabs
* Array of tab references
* @param aSelectTab
* Index of selected tab
* @param aIx
* Index of the next tab to check readyness for
* @param aCount
* Counter for number of times delaying b/c browser or history aren't ready
*/
restoreHistoryPrecursor: function sss_restoreHistoryPrecursor(aWindow, aTabs, aSelectTab, aIx, aCount) {
var tabbrowser = aWindow.getBrowser();
// make sure that all browsers and their histories are available
// - if one's not, resume this check in 100ms (repeat at most 10 times)
for (var t = aIx; t < aTabs.length; t++) {
try {
if (!tabbrowser.getBrowserForTab(aTabs[t]._tab).webNavigation.sessionHistory) {
throw new Error();
}
}
catch (ex) { // in case browser or history aren't ready yet
if (aCount < 10) {
var restoreHistoryFunc = function(self) {
self.restoreHistoryPrecursor(aWindow, aTabs, aSelectTab, aIx, aCount + 1);
}
aWindow.setTimeout(restoreHistoryFunc, 100, this);
return;
}
}
}
// mark the tabs as loading
for (t = 0; t < aTabs.length; t++) {
if (!aTabs[t].entries || !aTabs[t].entries[0])
continue; // there won't be anything to load
var tab = aTabs[t]._tab;
var browser = tabbrowser.getBrowserForTab(tab);
browser.stop(); // in case about:blank isn't done yet
tab.setAttribute("busy", "true");
tabbrowser.updateIcon(tab);
tabbrowser.setTabTitleLoading(tab);
// keep the data around to prevent dataloss in case
// a tab gets closed before it's been properly restored
browser.parentNode.__SS_data = aTabs[t];
}
// make sure to restore the selected tab first (if any)
if (aSelectTab-- && aTabs[aSelectTab]) {
aTabs.unshift(aTabs.splice(aSelectTab, 1)[0]);
tabbrowser.selectedTab = aTabs[0]._tab;
}
// helper hash for ensuring unique frame IDs
var idMap = { used: {} };
this.restoreHistory(aWindow, aTabs, idMap);
},
/**
* Restory history for a window
* @param aWindow
* Window reference
* @param aTabs
* Array of tab data
* @param aIdMap
* Hash for ensuring unique frame IDs
*/
restoreHistory: function sss_restoreHistory(aWindow, aTabs, aIdMap) {
var _this = this;
while (aTabs.length > 0 && (!aTabs[0]._tab || !aTabs[0]._tab.parentNode)) {
aTabs.shift(); // this tab got removed before being completely restored
}
if (aTabs.length == 0) {
return; // no more tabs to restore
}
var tabData = aTabs.shift();
var tab = tabData._tab;
var browser = aWindow.getBrowser().getBrowserForTab(tab);
var history = browser.webNavigation.sessionHistory;
if (history.count > 0) {
history.PurgeHistory(history.count);
}
history.QueryInterface(Ci.nsISHistoryInternal);
if (!tabData.entries) {
tabData.entries = [];
}
if (tabData.extData) {
tab.__SS_extdata = tabData.extData;
}
for (var i = 0; i < tabData.entries.length; i++) {
history.addEntry(this._deserializeHistoryEntry(tabData.entries[i], aIdMap), true);
}
// make sure to reset the capabilities and attributes, in case this tab gets reused
var disallow = (tabData.disallow)?tabData.disallow.split(","):[];
CAPABILITIES.forEach(function(aCapability) {
browser.docShell["allow" + aCapability] = disallow.indexOf(aCapability) == -1;
});
Array.filter(tab.attributes, function(aAttr) {
return (_this.xulAttributes.indexOf(aAttr.name) > -1);
}).forEach(tab.removeAttribute, tab);
if (tabData.xultab) {
tabData.xultab.split(" ").forEach(function(aAttr) {
if (/^([^\s=]+)=(.*)/.test(aAttr)) {
tab.setAttribute(RegExp.$1, decodeURI(RegExp.$2));
}
});
}
// notify the tabbrowser that the tab chrome has been restored
var event = aWindow.document.createEvent("Events");
event.initEvent("SSTabRestoring", true, false);
tab.dispatchEvent(event);
var activeIndex = (tabData.index || tabData.entries.length) - 1;
try {
browser.webNavigation.gotoIndex(activeIndex);
}
catch (ex) { } // ignore an invalid tabData.index
// restore those aspects of the currently active documents
// which are not preserved in the plain history entries
// (mainly scroll state and text data)
browser.__SS_restore_data = tabData.entries[activeIndex] || {};
browser.__SS_restore_text = tabData.text || "";
browser.__SS_restore_tab = tab;
browser.__SS_restore = this.restoreDocument_proxy;
browser.addEventListener("load", browser.__SS_restore, true);
aWindow.setTimeout(function(){ _this.restoreHistory(aWindow, aTabs, aIdMap); }, 0);
},
/**
* expands serialized history data into a session-history-entry instance
* @param aEntry
* Object containing serialized history data for a URL
* @param aIdMap
* Hash for ensuring unique frame IDs
* @returns nsISHEntry
*/
_deserializeHistoryEntry: function sss_deserializeHistoryEntry(aEntry, aIdMap) {
var shEntry = Cc["@mozilla.org/browser/session-history-entry;1"].
createInstance(Ci.nsISHEntry);
var ioService = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
shEntry.setURI(ioService.newURI(aEntry.url, null, null));
shEntry.setTitle(aEntry.title || aEntry.url);
if (aEntry.subframe)
shEntry.setIsSubFrame(aEntry.subframe || false);
shEntry.loadType = Ci.nsIDocShellLoadInfo.loadHistory;
if (aEntry.contentType)
shEntry.contentType = aEntry.contentType;
if (aEntry.cacheKey) {
var cacheKey = Cc["@mozilla.org/supports-PRUint32;1"].
createInstance(Ci.nsISupportsPRUint32);
cacheKey.data = aEntry.cacheKey;
shEntry.cacheKey = cacheKey;
}
if (aEntry.ID) {
// get a new unique ID for this frame (since the one from the last
// start might already be in use)
var id = aIdMap[aEntry.ID] || 0;
if (!id) {
for (id = Date.now(); aIdMap.used[id]; id++);
aIdMap[aEntry.ID] = id;
aIdMap.used[id] = true;
}
shEntry.ID = id;
}
if (aEntry.scroll) {
var scrollPos = (aEntry.scroll || "0,0").split(",");
scrollPos = [parseInt(scrollPos[0]) || 0, parseInt(scrollPos[1]) || 0];
shEntry.setScrollPosition(scrollPos[0], scrollPos[1]);
}
var postdata;
if (aEntry.postdata_b64) { // Firefox 3
postdata = atob(aEntry.postdata_b64);
} else if (aEntry.postdata) { // Firefox 2
postdata = aEntry.postdata;
}
if (postdata) {
var stream = Cc["@mozilla.org/io/string-input-stream;1"].
createInstance(Ci.nsIStringInputStream);
stream.setData(postdata, postdata.length);
shEntry.postData = stream;
}
if (aEntry.owner_b64) { // Firefox 3
var ownerInput = Cc["@mozilla.org/io/string-input-stream;1"].
createInstance(Ci.nsIStringInputStream);
var binaryData = atob(aEntry.owner_b64);
ownerInput.setData(binaryData, binaryData.length);
var binaryStream = Cc["@mozilla.org/binaryinputstream;1"].
createInstance(Ci.nsIObjectInputStream);
binaryStream.setInputStream(ownerInput);
try { // Catch possible deserialization exceptions
shEntry.owner = binaryStream.readObject(true);
} catch (ex) { debug(ex); }
} else if (aEntry.ownerURI) { // Firefox 2
var uriObj = ioService.newURI(aEntry.ownerURI, null, null);
shEntry.owner = Cc["@mozilla.org/scriptsecuritymanager;1"].
getService(Ci.nsIScriptSecurityManager).
getCodebasePrincipal(uriObj);
}
if (aEntry.children && shEntry instanceof Ci.nsISHContainer) {
for (var i = 0; i < aEntry.children.length; i++) {
shEntry.AddChild(this._deserializeHistoryEntry(aEntry.children[i], aIdMap), i);
}
}
return shEntry;
},
/**
* Restore properties to a loaded document
*/
restoreDocument_proxy: function sss_restoreDocument_proxy(aEvent) {
// wait for the top frame to be loaded completely
if (!aEvent || !aEvent.originalTarget || !aEvent.originalTarget.defaultView || aEvent.originalTarget.defaultView != aEvent.originalTarget.defaultView.top) {
return;
}
// XSS note: always call this before injecting content into a document!
function hasExpectedURL(aDocument, aURL)
!aURL || aURL.replace(/#.*/, "") == aDocument.location.href.replace(/#.*/, "");
var textArray = this.__SS_restore_text ? this.__SS_restore_text.split(" ") : [];
function restoreTextData(aContent, aPrefix, aURL) {
textArray.forEach(function(aEntry) {
if (/^((?:\d+\|)*)(#?)([^\s=]+)=(.*)$/.test(aEntry) &&
RegExp.$1 == aPrefix && hasExpectedURL(aContent.document, aURL)) {
var document = aContent.document;
var node = RegExp.$2 ? document.getElementById(RegExp.$3) : document.getElementsByName(RegExp.$3)[0] || null;
if (node && "value" in node && node.type != "file") {
node.value = decodeURI(RegExp.$4);
var event = document.createEvent("UIEvents");
event.initUIEvent("input", true, true, aContent, 0);
node.dispatchEvent(event);
}
}
});
}
let window = this.ownerDocument.defaultView;
function restoreTextDataAndScrolling(aContent, aData, aPrefix) {
restoreTextData(aContent, aPrefix, aData.url);
if (aData.innerHTML) {
window.setTimeout(function() {
if (aContent.document.designMode == "on" &&
hasExpectedURL(aContent.document, aData.url)) {
aContent.document.body.innerHTML = aData.innerHTML;
}
}, 0);
}
if (aData.scroll && /(\d+),(\d+)/.test(aData.scroll)) {
aContent.scrollTo(RegExp.$1, RegExp.$2);
}
for (var i = 0; i < aContent.frames.length; i++) {
if (aData.children && aData.children[i] &&
hasExpectedURL(aContent.document, aData.url)) {
restoreTextDataAndScrolling(aContent.frames[i], aData.children[i], aPrefix + i + "|");
}
}
}
if (hasExpectedURL(aEvent.originalTarget, this.__SS_restore_data.url)) {
var content = aEvent.originalTarget.defaultView;
if (this.currentURI.spec == "about:config") {
// unwrap the document for about:config because otherwise the properties
// of the XBL bindings - as the textbox - aren't accessible (see bug 350718)
content = content.wrappedJSObject;
}
restoreTextDataAndScrolling(content, this.__SS_restore_data, "");
}
// notify the tabbrowser that this document has been completely restored
var event = this.ownerDocument.createEvent("Events");
event.initEvent("SSTabRestored", true, false);
this.__SS_restore_tab.dispatchEvent(event);
this.removeEventListener("load", this.__SS_restore, true);
delete this.__SS_restore_data;
delete this.__SS_restore_text;
delete this.__SS_restore_tab;
delete this.__SS_restore;
},
/**
* Restore visibility and dimension features to a window
* @param aWindow
* Window reference
* @param aWinData
* Object containing session data for the window
*/
restoreWindowFeatures: function sss_restoreWindowFeatures(aWindow, aWinData) {
var hidden = (aWinData.hidden)?aWinData.hidden.split(","):[];
WINDOW_HIDEABLE_FEATURES.forEach(function(aItem) {
aWindow[aItem].visible = hidden.indexOf(aItem) == -1;
});
var _this = this;
aWindow.setTimeout(function() {
_this.restoreDimensions.apply(_this, [aWindow, aWinData.width || 0,
aWinData.height || 0, "screenX" in aWinData ? aWinData.screenX : NaN,
"screenY" in aWinData ? aWinData.screenY : NaN,
aWinData.sizemode || "", aWinData.sidebar || ""]);
}, 0);
},
/**
* Restore a window's dimensions
* @param aWidth
* Window width
* @param aHeight
* Window height
* @param aLeft
* Window left
* @param aTop
* Window top
* @param aSizeMode
* Window size mode (eg: maximized)
* @param aSidebar
* Sidebar command
*/
restoreDimensions: function sss_restoreDimensions(aWindow, aWidth, aHeight, aLeft, aTop, aSizeMode, aSidebar) {
var win = aWindow;
var _this = this;
function win_(aName) { return _this._getWindowDimension(win, aName); }
// only modify those aspects which aren't correct yet
if (aWidth && aHeight && (aWidth != win_("width") || aHeight != win_("height"))) {
aWindow.resizeTo(aWidth, aHeight);
}
if (!isNaN(aLeft) && !isNaN(aTop) && (aLeft != win_("screenX") || aTop != win_("screenY"))) {
aWindow.moveTo(aLeft, aTop);
}
if (aSizeMode == "maximized" && win_("sizemode") != "maximized") {
aWindow.maximize();
}
else if (aSizeMode && aSizeMode != "maximized" && win_("sizemode") != "normal") {
aWindow.restore();
}
var sidebar = aWindow.document.getElementById("sidebar-box");
if (sidebar.getAttribute("sidebarcommand") != aSidebar) {
aWindow.toggleSidebar(aSidebar);
}
// since resizing/moving a window brings it to the foreground,
// we might want to re-focus the last focused window
if (this.windowToFocus) {
this.windowToFocus.content.focus();
}
},
/**
* Restores cookies (accepting both Firefox 2.0 and current format)
* @param aCookies
* Array of cookie objects
*/
restoreCookies: function sss_restoreCookies(aCookies) {
if (aCookies.count && aCookies.domain1) {
// convert to the new cookie serialization format
var converted = [];
for (var i = 1; i <= aCookies.count; i++) {
// for simplicity we only accept the format we produced ourselves
var parsed = aCookies["value" + i].match(/^([^=;]+)=([^;]*);(?:domain=[^;]+;)?(?:path=([^;]*);)?(secure;)?(httponly;)?/);
if (parsed && /^https?:\/\/([^\/]+)/.test(aCookies["domain" + i]))
converted.push({
host: RegExp.$1, path: parsed[3], name: parsed[1], value: parsed[2],
secure: parsed[4], httponly: parsed[5]
});
}
aCookies = converted;
}
var cookieManager = Cc["@mozilla.org/cookiemanager;1"].
getService(Ci.nsICookieManager2);
// MAX_EXPIRY should be 2^63-1, but JavaScript can't handle that precision
var MAX_EXPIRY = Math.pow(2, 62);
for (i = 0; i < aCookies.length; i++) {
var cookie = aCookies[i];
try {
cookieManager.add(cookie.host, cookie.path || "", cookie.name || "", cookie.value, !!cookie.secure, !!cookie.httponly, true, "expiry" in cookie ? cookie.expiry : MAX_EXPIRY);
}
catch (ex) { Cu.reportError(ex); } // don't let a single cookie stop recovering
}
},
/* ........ Disk Access .............. */
/**
* save state delayed by N ms
* marks window as dirty (i.e. data update can't be skipped)
* @param aWindow
* Window reference
* @param aDelay
* Milliseconds to delay
*/
saveStateDelayed: function sss_saveStateDelayed(aWindow, aDelay) {
if (aWindow) {
this._dirtyWindows[aWindow.__SSi] = true;
}
if (!this._saveTimer && this._resume_from_crash) {
// interval until the next disk operation is allowed
var minimalDelay = this._lastSaveTime + this._interval - Date.now();
// if we have to wait, set a timer, otherwise saveState directly
aDelay = Math.max(minimalDelay, aDelay || 2000);
if (aDelay > 0) {
this._saveTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
this._saveTimer.init(this, aDelay, Ci.nsITimer.TYPE_ONE_SHOT);
}
else {
this.saveState();
}
}
},
/**
* save state to disk
* @param aUpdateAll
* Bool update all windows
*/
saveState: function sss_saveState(aUpdateAll) {
// if crash recovery is disabled, only save session resuming information
if (!this._resume_from_crash && this._loadState == STATE_RUNNING)
return;
this._dirty = aUpdateAll;
var oState = this._getCurrentState();
oState.session = { state: ((this._loadState == STATE_RUNNING) ? STATE_RUNNING_STR : STATE_STOPPED_STR) };
this._writeFile(this._sessionFile, oState.toSource());
this._lastSaveTime = Date.now();
},
/**
* delete session datafile and backup
*/
_clearDisk: function sss_clearDisk() {
if (this._sessionFile.exists()) {
try {
this._sessionFile.remove(false);
}
catch (ex) { dump(ex + '\n'); } // couldn't remove the file - what now?
}
if (this._sessionFileBackup.exists()) {
try {
this._sessionFileBackup.remove(false);
}
catch (ex) { dump(ex + '\n'); } // couldn't remove the file - what now?
}
},
/* ........ Auxiliary Functions .............. */
/**
* call a callback for all currently opened browser windows
* (might miss the most recent one)
* @param aFunc
* Callback each window is passed to
*/
_forEachBrowserWindow: function sss_forEachBrowserWindow(aFunc) {
var windowMediator = Cc["@mozilla.org/appshell/window-mediator;1"].
getService(Ci.nsIWindowMediator);
var windowsEnum = windowMediator.getEnumerator("navigator:browser");
while (windowsEnum.hasMoreElements()) {
var window = windowsEnum.getNext();
if (window.__SSi) {
aFunc.call(this, window);
}
}
},
/**
* Returns most recent window
* @returns Window reference
*/
_getMostRecentBrowserWindow: function sss_getMostRecentBrowserWindow() {
var windowMediator = Cc["@mozilla.org/appshell/window-mediator;1"].
getService(Ci.nsIWindowMediator);
return windowMediator.getMostRecentWindow("navigator:browser");
},
/**
* open a new browser window for a given session state
* called when restoring a multi-window session
* @param aState
* Object containing session data
*/
_openWindowWithState: function sss_openWindowWithState(aState) {
var argString = Cc["@mozilla.org/supports-string;1"].
createInstance(Ci.nsISupportsString);
argString.data = "";
//XXXzeniko shouldn't it be possible to set the window's dimensions here (as feature)?
var window = Cc["@mozilla.org/embedcomp/window-watcher;1"].
getService(Ci.nsIWindowWatcher).
openWindow(null, this._prefBranch.getCharPref("chromeURL"), "_blank",
"chrome,dialog=no,all", argString);
window.__SS_state = aState;
var _this = this;
window.addEventListener("load", function(aEvent) {
aEvent.currentTarget.removeEventListener("load", arguments.callee, true);
_this.restoreWindow(aEvent.currentTarget, aEvent.currentTarget.__SS_state, true, true);
delete aEvent.currentTarget.__SS_state;
}, true);
return window;
},
/**
* Whether or not to resume session, if not recovering from a crash.
* @returns bool
*/
_doResumeSession: function sss_doResumeSession() {
return this._prefBranch.getIntPref("startup.page") == 3 ||
this._prefBranch.getBoolPref("sessionstore.resume_session_once");
},
/**
* whether the user wants to load any other page at startup
* (except the homepage) - needed for determining whether to overwrite the current tabs
* C.f.: nsBrowserContentHandler's defaultArgs implementation.
* @returns bool
*/
_isCmdLineEmpty: function sss_isCmdLineEmpty(aWindow) {
var defaultArgs = Cc["@mozilla.org/browser/clh;1"].
getService(Ci.nsIBrowserHandler).defaultArgs;
if (aWindow.arguments && aWindow.arguments[0] &&
aWindow.arguments[0] == defaultArgs)
aWindow.arguments[0] = null;
return !aWindow.arguments || !aWindow.arguments[0];
},
/**
* don't save sensitive data if the user doesn't want to
* (distinguishes between encrypted and non-encrypted sites)
* @param aIsHTTPS
* Bool is encrypted
* @returns bool
*/
_checkPrivacyLevel: function sss_checkPrivacyLevel(aIsHTTPS) {
return this._prefBranch.getIntPref("sessionstore.privacy_level") < (aIsHTTPS ? PRIVACY_ENCRYPTED : PRIVACY_FULL);
},
/**
* on popup windows, the XULWindow's attributes seem not to be set correctly
* we use thus JSDOMWindow attributes for sizemode and normal window attributes
* (and hope for reasonable values when maximized/minimized - since then
* outerWidth/outerHeight aren't the dimensions of the restored window)
* @param aWindow
* Window reference
* @param aAttribute
* String sizemode | width | height | other window attribute
* @returns string
*/
_getWindowDimension: function sss_getWindowDimension(aWindow, aAttribute) {
if (aAttribute == "sizemode") {
switch (aWindow.windowState) {
case aWindow.STATE_MAXIMIZED:
return "maximized";
case aWindow.STATE_MINIMIZED:
return "minimized";
default:
return "normal";
}
}
var dimension;
switch (aAttribute) {
case "width":
dimension = aWindow.outerWidth;
break;
case "height":
dimension = aWindow.outerHeight;
break;
default:
dimension = aAttribute in aWindow ? aWindow[aAttribute] : "";
break;
}
if (aWindow.windowState == aWindow.STATE_NORMAL) {
return dimension;
}
return aWindow.document.documentElement.getAttribute(aAttribute) || dimension;
},
/**
* Convenience method to get localized string bundles
* @param aURI
* @returns nsIStringBundle
*/
_getStringBundle: function sss_getStringBundle(aURI) {
var bundleService = Cc["@mozilla.org/intl/stringbundle;1"].
getService(Ci.nsIStringBundleService);
var appLocale = Cc["@mozilla.org/intl/nslocaleservice;1"].
getService(Ci.nsILocaleService).getApplicationLocale();
return bundleService.createBundle(aURI, appLocale);
},
/**
* Get nsIURI from string
* @param string
* @returns nsIURI
*/
_getURIFromString: function sss_getURIFromString(aString) {
var ioService = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
return ioService.newURI(aString, null, null);
},
/**
* Annotate a breakpad crash report with the currently selected tab's URL.
*/
_updateCrashReportURL: function sss_updateCrashReportURL(aWindow) {
if (!Ci.nsICrashReporter) {
// if breakpad isn't built, don't bother next time at all
this._updateCrashReportURL = function(aWindow) {};
return;
}
try {
var currentUrl = aWindow.getBrowser().currentURI.spec;
var cr = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsICrashReporter);
cr.annotateCrashReport("URL", currentUrl);
}
catch (ex) {
// don't make noise when crashreporter is built but not enabled
if (ex.result != Components.results.NS_ERROR_NOT_INITIALIZED)
debug(ex);
}
},
/**
* safe eval'ing
*/
_safeEval: function sss_safeEval(aStr) {
return Cu.evalInSandbox(aStr, new Cu.Sandbox("about:blank"));
},
/**
* Converts a JavaScript object into a JSON string
* (see http://www.json.org/ for more information).
*
* The inverse operation consists of eval("(" + JSON_string + ")");
* and should be provably safe.
*
* @param aJSObject is the object to be converted
* @return the object's JSON representation
*/
_toJSONString: function sss_toJSONString(aJSObject) {
var str = JSON.toString(aJSObject, ["_tab", "_hosts"] /* keys to drop */);
// sanity check - so that API consumers can just eval this string
if (!JSON.isMostlyHarmless(str))
throw new Error("JSON conversion failed unexpectedly!");
return str;
},
_notifyIfAllWindowsRestored: function sss_notifyIfAllWindowsRestored() {
if (this._restoreCount) {
this._restoreCount--;
if (this._restoreCount == 0) {
// This was the last window restored at startup, notify observers.
var observerService = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
observerService.notifyObservers(null, NOTIFY_WINDOWS_RESTORED, "");
}
}
},
/* ........ Storage API .............. */
/**
* write file to disk
* @param aFile
* nsIFile
* @param aData
* String data
*/
_writeFile: function sss_writeFile(aFile, aData) {
// init stream
var stream = Cc["@mozilla.org/network/safe-file-output-stream;1"].
createInstance(Ci.nsIFileOutputStream);
stream.init(aFile, 0x02 | 0x08 | 0x20, 0600, 0);
// convert to UTF-8
var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
createInstance(Ci.nsIScriptableUnicodeConverter);
converter.charset = "UTF-8";
var convertedData = converter.ConvertFromUnicode(aData);
convertedData += converter.Finish();
// write and close stream
stream.write(convertedData, convertedData.length);
if (stream instanceof Ci.nsISafeOutputStream) {
stream.finish();
} else {
stream.close();
}
}
};
function NSGetModule(aComMgr, aFileSpec)
XPCOMUtils.generateModule([SessionStoreService]);
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