gecko/mobile/xul/chrome/content/sanitize.js
2012-05-21 12:12:37 +01:00

319 lines
8.9 KiB
JavaScript

// -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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 branch = Services.prefs.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: {
// Clear Sync account before passwords so that Sync still has access to the
// credentials to clean up device-specific records on the server. Also
// disable it before wiping history so we don't accidentally sync that.
syncAccount: {
clear: function ()
{
WeaveGlue.disconnect();
},
get canClear()
{
return (Weave.Status.checkSetup() != Weave.CLIENT_NOT_CONFIGURED);
}
},
cache: {
clear: function ()
{
var cacheService = Cc["@mozilla.org/network/cache-service;1"].getService(Ci.nsICacheService);
try {
cacheService.evictEntries(Ci.nsICache.STORE_ANYWHERE);
} catch(er) {}
let imageCache = Cc["@mozilla.org/image/cache;1"].getService(Ci.imgICache);
try {
imageCache.clearCache(false); // true=chrome, false=content
} catch(er) {}
},
get canClear()
{
return true;
}
},
cookies: {
clear: function ()
{
var cookieMgr = Cc["@mozilla.org/cookiemanager;1"].getService(Ci.nsICookieManager);
cookieMgr.removeAll();
},
get canClear()
{
return true;
}
},
geolocation: {
clear: function ()
{
// clear any network geolocation provider sessions
try {
var branch = Services.prefs.getBranch("geo.wifi.access_token.");
branch.deleteBranch("");
branch = Services.prefs.getBranch("geo.request.remember.");
branch.deleteBranch("");
} catch (e) {dump(e);}
},
get canClear()
{
return true;
}
},
siteSettings: {
clear: function ()
{
// Clear site-specific permissions like "Allow this site to open popups"
Services.perms.removeAll();
// Clear site-specific settings like page-zoom level
var cps = Cc["@mozilla.org/content-pref/service;1"].getService(Ci.nsIContentPrefService);
cps.removeGroupedPrefs();
// Clear "Never remember passwords for this site", which is not handled by
// the permission manager
var pwmgr = Cc["@mozilla.org/login-manager;1"].getService(Ci.nsILoginManager);
var hosts = pwmgr.getAllDisabledHosts({})
for each (var host in hosts) {
pwmgr.setLoginSavingEnabled(host, true);
}
},
get canClear()
{
return true;
}
},
offlineApps: {
clear: function ()
{
var cacheService = Cc["@mozilla.org/network/cache-service;1"].getService(Ci.nsICacheService);
try {
cacheService.evictEntries(Ci.nsICache.STORE_OFFLINE);
} catch(er) {}
var storage = Cc["@mozilla.org/dom/storagemanager;1"].getService(Ci.nsIDOMStorageManager);
storage.clearOfflineApps();
},
get canClear()
{
return true;
}
},
history: {
clear: function ()
{
var globalHistory = Cc["@mozilla.org/browser/global-history;2"].getService(Ci.nsIBrowserHistory);
globalHistory.removeAllPages();
try {
Services.obs.notifyObservers(null, "browser:purge-session-history", "");
}
catch (e) { }
// Clear last URL of the Open Web Location dialog
try {
Services.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 windows = Services.wm.getEnumerator("navigator:browser");
while (windows.hasMoreElements()) {
var searchBar = windows.getNext().document.getElementById("searchbar");
if (searchBar) {
searchBar.value = "";
searchBar.textbox.editor.transactionManager.clear();
}
}
var formHistory = Cc["@mozilla.org/satchel/form-history;1"].getService(Ci.nsIFormHistory2);
formHistory.removeAllEntries();
},
get canClear()
{
var formHistory = Cc["@mozilla.org/satchel/form-history;1"].getService(Ci.nsIFormHistory2);
return formHistory.hasEntries;
}
},
downloads: {
clear: function ()
{
var dlMgr = Cc["@mozilla.org/download-manager;1"].getService(Ci.nsIDownloadManager);
dlMgr.cleanUp();
},
get canClear()
{
var dlMgr = Cc["@mozilla.org/download-manager;1"].getService(Ci.nsIDownloadManager);
return dlMgr.canCleanUp;
}
},
passwords: {
clear: function ()
{
var pwmgr = Cc["@mozilla.org/login-manager;1"].getService(Ci.nsILoginManager);
pwmgr.removeAllLogins();
},
get canClear()
{
var pwmgr = Cc["@mozilla.org/login-manager;1"].getService(Ci.nsILoginManager);
var count = pwmgr.countLogins("", "", ""); // count all logins
return (count > 0);
}
},
sessions: {
clear: function ()
{
// clear all auth tokens
var sdr = Cc["@mozilla.org/security/sdr;1"].getService(Ci.nsISecretDecoderRing);
sdr.logoutAndTeardown();
// clear plain HTTP auth sessions
var authMgr = Cc['@mozilla.org/network/http-auth-manager;1'].getService(Ci.nsIHttpAuthManager);
authMgr.clearAll();
},
get canClear()
{
return true;
}
}
}
};
// "Static" members
Sanitizer.prefDomain = "privacy.sanitize.";
Sanitizer.prefShutdown = "sanitizeOnShutdown";
Sanitizer.prefDidShutdown = "didShutdownSanitize";
Sanitizer._prefs = null;
Sanitizer.__defineGetter__("prefs", function()
{
return Sanitizer._prefs ? Sanitizer._prefs
: Sanitizer._prefs = Cc["@mozilla.org/preferences-service;1"]
.getService(Ci.nsIPrefService)
.getBranch(Sanitizer.prefDomain);
});
/**
* Deletes privacy sensitive data in a batch, optionally showing the
* sanitize UI, according to user preferences
*
* @returns null if everything's fine
* an object in the form { itemName: error, ... } on (partial) failure
*/
Sanitizer.sanitize = function()
{
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() || // sanitize() returns null on full success
prefs.setBoolPref(Sanitizer.prefDidShutdown, true);
}
};