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pjs/browser/base/content/sanitize.js

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11 KiB
JavaScript
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# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
# ***** 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 Firefox Sanitizer.
#
# The Initial Developer of the Original Code is
# Ben Goodger.
# Portions created by the Initial Developer are Copyright (C) 2005
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Ben Goodger <ben@mozilla.org>
# Giorgio Maone <g.maone@informaction.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 *****
function Sanitizer() {}
Sanitizer.prototype = {
// warning to the caller: this one may raise an exception (e.g. bug #265028)
clearItem: function (aItemName)
{
if (this.items[aItemName].canClear)
this.items[aItemName].clear();
},
canClearItem: function (aItemName)
{
return this.items[aItemName].canClear;
},
_prefDomain: "privacy.item.",
getNameFromPreference: function (aPreferenceName)
{
return aPreferenceName.substr(this._prefDomain.length);
},
/**
* Deletes privacy sensitive data in a batch, according to user preferences
*
* @returns null if everything's fine; an object in the form
* { itemName: error, ... } on (partial) failure
*/
sanitize: function ()
{
var psvc = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefService);
var branch = psvc.getBranch(this._prefDomain);
var errors = null;
for (var itemName in this.items) {
var item = this.items[itemName];
if ("clear" in item && item.canClear && branch.getBoolPref(itemName)) {
// Some of these clear() may raise exceptions (see bug #265028)
// to sanitize as much as possible, we catch and store them,
// rather than fail fast.
// Callers should check returned errors and give user feedback
// about items that could not be sanitized
try {
item.clear();
} catch(er) {
if (!errors)
errors = {};
errors[itemName] = er;
dump("Error sanitizing " + itemName + ": " + er + "\n");
}
}
}
return errors;
},
items: {
cache: {
clear: function ()
{
const cc = Components.classes;
const ci = Components.interfaces;
var cacheService = cc["@mozilla.org/network/cache-service;1"]
.getService(ci.nsICacheService);
try {
cacheService.evictEntries(ci.nsICache.STORE_ANYWHERE);
} catch(er) {}
},
get canClear()
{
return true;
}
},
cookies: {
clear: function ()
{
var cookieMgr = Components.classes["@mozilla.org/cookiemanager;1"]
.getService(Components.interfaces.nsICookieManager);
cookieMgr.removeAll();
},
get canClear()
{
return true;
}
},
offlineApps: {
clear: function ()
{
const Cc = Components.classes;
const Ci = Components.interfaces;
var cacheService = Cc["@mozilla.org/network/cache-service;1"].
getService(Ci.nsICacheService);
try {
cacheService.evictEntries(Ci.nsICache.STORE_OFFLINE);
} catch(er) {}
var storageManagerService = Cc["@mozilla.org/dom/storagemanager;1"].
getService(Ci.nsIDOMStorageManager);
storageManagerService.clearOfflineApps();
},
get canClear()
{
return true;
}
},
history: {
clear: function ()
{
var globalHistory = Components.classes["@mozilla.org/browser/global-history;2"]
.getService(Components.interfaces.nsIBrowserHistory);
globalHistory.removeAllPages();
try {
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
os.notifyObservers(null, "browser:purge-session-history", "");
}
catch (e) { }
// Clear last URL of the Open Web Location dialog
var prefs = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefBranch2);
try {
prefs.clearUserPref("general.open_location.last_url");
}
catch (e) { }
},
get canClear()
{
// bug 347231: Always allow clearing history due to dependencies on
// the browser:purge-session-history notification. (like error console)
return true;
}
},
formdata: {
clear: function ()
{
//Clear undo history of all searchBars
var windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1'].getService();
var windowManagerInterface = windowManager.QueryInterface(Components.interfaces.nsIWindowMediator);
var windows = windowManagerInterface.getEnumerator("navigator:browser");
while (windows.hasMoreElements()) {
var searchBar = windows.getNext().document.getElementById("searchbar");
if (searchBar) {
searchBar.value = "";
searchBar.textbox.editor.transactionManager.clear();
}
}
var formHistory = Components.classes["@mozilla.org/satchel/form-history;1"]
.getService(Components.interfaces.nsIFormHistory2);
formHistory.removeAllEntries();
},
get canClear()
{
var formHistory = Components.classes["@mozilla.org/satchel/form-history;1"]
.getService(Components.interfaces.nsIFormHistory2);
return formHistory.hasEntries;
}
},
downloads: {
clear: function ()
{
var dlMgr = Components.classes["@mozilla.org/download-manager;1"]
.getService(Components.interfaces.nsIDownloadManager);
dlMgr.cleanUp();
},
get canClear()
{
var dlMgr = Components.classes["@mozilla.org/download-manager;1"]
.getService(Components.interfaces.nsIDownloadManager);
return dlMgr.canCleanUp;
}
},
passwords: {
clear: function ()
{
var pwmgr = Components.classes["@mozilla.org/login-manager;1"]
.getService(Components.interfaces.nsILoginManager);
pwmgr.removeAllLogins();
},
get canClear()
{
var pwmgr = Components.classes["@mozilla.org/login-manager;1"]
.getService(Components.interfaces.nsILoginManager);
var count = pwmgr.countLogins("", "", ""); // count all logins
return (count > 0);
}
},
sessions: {
clear: function ()
{
// clear all auth tokens
var sdr = Components.classes["@mozilla.org/security/sdr;1"]
.getService(Components.interfaces.nsISecretDecoderRing);
sdr.logoutAndTeardown();
// clear plain HTTP auth sessions
var authMgr = Components.classes['@mozilla.org/network/http-auth-manager;1']
.getService(Components.interfaces.nsIHttpAuthManager);
authMgr.clearAll();
},
get canClear()
{
return true;
}
}
}
};
// "Static" members
Sanitizer.prefDomain = "privacy.sanitize.";
Sanitizer.prefPrompt = "promptOnSanitize";
Sanitizer.prefShutdown = "sanitizeOnShutdown";
Sanitizer.prefDidShutdown = "didShutdownSanitize";
Sanitizer._prefs = null;
Sanitizer.__defineGetter__("prefs", function()
{
return Sanitizer._prefs ? Sanitizer._prefs
: Sanitizer._prefs = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefService)
.getBranch(Sanitizer.prefDomain);
});
// Shows sanitization UI
Sanitizer.showUI = function(aParentWindow)
{
var ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
.getService(Components.interfaces.nsIWindowWatcher);
#ifdef XP_MACOSX
ww.openWindow(null, // make this an app-modal window on Mac
#else
ww.openWindow(aParentWindow,
#endif
"chrome://browser/content/sanitize.xul",
"Sanitize",
"chrome,titlebar,centerscreen,modal",
null);
};
/**
* Deletes privacy sensitive data in a batch, optionally showing the
* sanitize UI, according to user preferences
*
* @returns null if everything's fine (no error or displayed UI, which
* should handle errors);
* an object in the form { itemName: error, ... } on (partial) failure
*/
Sanitizer.sanitize = function(aParentWindow)
{
if (Sanitizer.prefs.getBoolPref(Sanitizer.prefPrompt)) {
Sanitizer.showUI(aParentWindow);
return null;
}
return new Sanitizer().sanitize();
};
Sanitizer.onStartup = function()
{
// we check for unclean exit with pending sanitization
Sanitizer._checkAndSanitize();
};
Sanitizer.onShutdown = function()
{
// we check if sanitization is needed and perform it
Sanitizer._checkAndSanitize();
};
// this is called on startup and shutdown, to perform pending sanitizations
Sanitizer._checkAndSanitize = function()
{
const prefs = Sanitizer.prefs;
if (prefs.getBoolPref(Sanitizer.prefShutdown) &&
!prefs.prefHasUserValue(Sanitizer.prefDidShutdown)) {
// this is a shutdown or a startup after an unclean exit
Sanitizer.sanitize(null) || // sanitize() returns null on full success
prefs.setBoolPref(Sanitizer.prefDidShutdown, true);
}
};
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