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gecko/toolkit/mozapps/extensions/nsBlocklistService.js

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
# ***** 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 Blocklist Service.
#
# The Initial Developer of the Original Code is
# Mozilla Corporation.
# Portions created by the Initial Developer are Copyright (C) 2007
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Robert Strong <robert.bugzilla@gmail.com>
# Michael Wu <flamingice@sourmilk.net>
# Dave Townsend <dtownsend@oxymoronical.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 *****
*/
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://gre/modules/FileUtils.jsm");
Components.utils.import("resource://gre/modules/AddonManager.jsm");
Components.utils.import("resource://gre/modules/Services.jsm");
const TOOLKIT_ID = "toolkit@mozilla.org"
const KEY_PROFILEDIR = "ProfD";
const KEY_APPDIR = "XCurProcD";
const FILE_BLOCKLIST = "blocklist.xml";
const PREF_BLOCKLIST_LASTUPDATETIME = "app.update.lastUpdateTime.blocklist-background-update-timer";
const PREF_BLOCKLIST_URL = "extensions.blocklist.url";
const PREF_BLOCKLIST_ENABLED = "extensions.blocklist.enabled";
const PREF_BLOCKLIST_INTERVAL = "extensions.blocklist.interval";
const PREF_BLOCKLIST_LEVEL = "extensions.blocklist.level";
const PREF_BLOCKLIST_PINGCOUNTTOTAL = "extensions.blocklist.pingCountTotal";
const PREF_BLOCKLIST_PINGCOUNTVERSION = "extensions.blocklist.pingCountVersion";
const PREF_PLUGINS_NOTIFYUSER = "plugins.update.notifyUser";
const PREF_GENERAL_USERAGENT_LOCALE = "general.useragent.locale";
const PREF_PARTNER_BRANCH = "app.partner.";
const PREF_APP_DISTRIBUTION = "distribution.id";
const PREF_APP_DISTRIBUTION_VERSION = "distribution.version";
const PREF_APP_UPDATE_CHANNEL = "app.update.channel";
const PREF_EM_LOGGING_ENABLED = "extensions.logging.enabled";
const XMLURI_BLOCKLIST = "http://www.mozilla.org/2006/addons-blocklist";
const XMLURI_PARSE_ERROR = "http://www.mozilla.org/newlayout/xml/parsererror.xml"
const UNKNOWN_XPCOM_ABI = "unknownABI";
const URI_BLOCKLIST_DIALOG = "chrome://mozapps/content/extensions/blocklist.xul"
const DEFAULT_SEVERITY = 3;
const DEFAULT_LEVEL = 2;
const MAX_BLOCK_LEVEL = 3;
const SEVERITY_OUTDATED = 0;
var gLoggingEnabled = null;
var gBlocklistEnabled = true;
var gBlocklistLevel = DEFAULT_LEVEL;
XPCOMUtils.defineLazyServiceGetter(this, "gConsole",
"@mozilla.org/consoleservice;1",
"nsIConsoleService");
XPCOMUtils.defineLazyServiceGetter(this, "gVersionChecker",
"@mozilla.org/xpcom/version-comparator;1",
"nsIVersionComparator");
XPCOMUtils.defineLazyGetter(this, "gPref", function bls_gPref() {
return Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService).
QueryInterface(Ci.nsIPrefBranch2);
});
XPCOMUtils.defineLazyGetter(this, "gApp", function bls_gApp() {
return Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULAppInfo).
QueryInterface(Ci.nsIXULRuntime);
});
XPCOMUtils.defineLazyGetter(this, "gABI", function bls_gABI() {
let abi = null;
try {
abi = gApp.XPCOMABI;
}
catch (e) {
LOG("BlockList Global gABI: XPCOM ABI unknown.");
}
#ifdef XP_MACOSX
// Mac universal build should report a different ABI than either macppc
// or mactel.
let macutils = Cc["@mozilla.org/xpcom/mac-utils;1"].
getService(Ci.nsIMacUtils);
if (macutils.isUniversalBinary)
abi += "-u-" + macutils.architecturesInBinary;
#endif
return abi;
});
XPCOMUtils.defineLazyGetter(this, "gOSVersion", function bls_gOSVersion() {
let osVersion;
let sysInfo = Cc["@mozilla.org/system-info;1"].
getService(Ci.nsIPropertyBag2);
try {
osVersion = sysInfo.getProperty("name") + " " + sysInfo.getProperty("version");
}
catch (e) {
LOG("BlockList Global gOSVersion: OS Version unknown.");
}
if (osVersion) {
try {
osVersion += " (" + sysInfo.getProperty("secondaryLibrary") + ")";
}
catch (e) {
// Not all platforms have a secondary widget library, so an error is nothing to worry about.
}
osVersion = encodeURIComponent(osVersion);
}
return osVersion;
});
// shared code for suppressing bad cert dialogs
XPCOMUtils.defineLazyGetter(this, "gCertUtils", function bls_gCertUtils() {
let temp = { };
Components.utils.import("resource://gre/modules/CertUtils.jsm", temp);
return temp;
});
function getObserverService() {
return Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
}
/**
* Logs a string to the error console.
* @param string
* The string to write to the error console..
*/
function LOG(string) {
if (gLoggingEnabled) {
dump("*** " + string + "\n");
gConsole.logStringMessage(string);
}
}
/**
* Gets a preference value, handling the case where there is no default.
* @param func
* The name of the preference function to call, on nsIPrefBranch
* @param preference
* The name of the preference
* @param defaultValue
* The default value to return in the event the preference has
* no setting
* @returns The value of the preference, or undefined if there was no
* user or default value.
*/
function getPref(func, preference, defaultValue) {
try {
return gPref[func](preference);
}
catch (e) {
}
return defaultValue;
}
/**
* Constructs a URI to a spec.
* @param spec
* The spec to construct a URI to
* @returns The nsIURI constructed.
*/
function newURI(spec) {
var ioServ = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
return ioServ.newURI(spec, null, null);
}
// Restarts the application checking in with observers first
function restartApp() {
// Notify all windows that an application quit has been requested.
var os = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
var cancelQuit = Cc["@mozilla.org/supports-PRBool;1"].
createInstance(Ci.nsISupportsPRBool);
os.notifyObservers(cancelQuit, "quit-application-requested", null);
// Something aborted the quit process.
if (cancelQuit.data)
return;
var as = Cc["@mozilla.org/toolkit/app-startup;1"].
getService(Ci.nsIAppStartup);
as.quit(Ci.nsIAppStartup.eRestart | Ci.nsIAppStartup.eAttemptQuit);
}
/**
* Checks whether this blocklist element is valid for the current OS and ABI.
* If the element has an "os" attribute then the current OS must appear in
* its comma separated list for the element to be valid. Similarly for the
* xpcomabi attribute.
*/
function matchesOSABI(blocklistElement) {
if (blocklistElement.hasAttribute("os")) {
var choices = blocklistElement.getAttribute("os").split(",");
if (choices.length > 0 && choices.indexOf(gApp.OS) < 0)
return false;
}
if (blocklistElement.hasAttribute("xpcomabi")) {
choices = blocklistElement.getAttribute("xpcomabi").split(",");
if (choices.length > 0 && choices.indexOf(gApp.XPCOMABI) < 0)
return false;
}
return true;
}
/**
* Gets the current value of the locale. It's possible for this preference to
* be localized, so we have to do a little extra work here. Similar code
* exists in nsHttpHandler.cpp when building the UA string.
*/
function getLocale() {
try {
// Get the default branch
var defaultPrefs = gPref.getDefaultBranch(null);
return defaultPrefs.getComplexPref(PREF_GENERAL_USERAGENT_LOCALE,
Ci.nsIPrefLocalizedString).data;
} catch (e) {}
return gPref.getCharPref(PREF_GENERAL_USERAGENT_LOCALE);
}
/**
* Read the update channel from defaults only. We do this to ensure that
* the channel is tightly coupled with the application and does not apply
* to other installations of the application that may use the same profile.
*/
function getUpdateChannel() {
var channel = "default";
var prefName;
var prefValue;
var defaults = gPref.getDefaultBranch(null);
try {
channel = defaults.getCharPref(PREF_APP_UPDATE_CHANNEL);
} catch (e) {
// use default when pref not found
}
try {
var partners = gPref.getChildList(PREF_PARTNER_BRANCH);
if (partners.length) {
channel += "-cck";
partners.sort();
for each (prefName in partners) {
prefValue = gPref.getCharPref(prefName);
channel += "-" + prefValue;
}
}
}
catch (e) {
Components.utils.reportError(e);
}
return channel;
}
/* Get the distribution pref values, from defaults only */
function getDistributionPrefValue(aPrefName) {
var prefValue = "default";
var defaults = gPref.getDefaultBranch(null);
try {
prefValue = defaults.getCharPref(aPrefName);
} catch (e) {
// use default when pref not found
}
return prefValue;
}
/**
* Manages the Blocklist. The Blocklist is a representation of the contents of
* blocklist.xml and allows us to remotely disable / re-enable blocklisted
* items managed by the Extension Manager with an item's appDisabled property.
* It also blocklists plugins with data from blocklist.xml.
*/
function Blocklist() {
let os = getObserverService();
os.addObserver(this, "xpcom-shutdown", false);
gLoggingEnabled = getPref("getBoolPref", PREF_EM_LOGGING_ENABLED, false);
gBlocklistEnabled = getPref("getBoolPref", PREF_BLOCKLIST_ENABLED, true);
gBlocklistLevel = Math.min(getPref("getIntPref", PREF_BLOCKLIST_LEVEL, DEFAULT_LEVEL),
MAX_BLOCK_LEVEL);
gPref.addObserver("extensions.blocklist.", this, false);
}
Blocklist.prototype = {
/**
* Extension ID -> array of Version Ranges
* Each value in the version range array is a JS Object that has the
* following properties:
* "minVersion" The minimum version in a version range (default = 0)
* "maxVersion" The maximum version in a version range (default = *)
* "targetApps" Application ID -> array of Version Ranges
* (default = current application ID)
* Each value in the version range array is a JS Object that
* has the following properties:
* "minVersion" The minimum version in a version range
* (default = 0)
* "maxVersion" The maximum version in a version range
* (default = *)
*/
_addonEntries: null,
_pluginEntries: null,
observe: function(aSubject, aTopic, aData) {
switch (aTopic) {
case "xpcom-shutdown":
let os = getObserverService();
os.removeObserver(this, "xpcom-shutdown");
gPref.removeObserver("extensions.blocklist.", this);
break;
case "nsPref:changed":
switch (aData) {
case PREF_BLOCKLIST_ENABLED:
gBlocklistEnabled = getPref("getBoolPref", PREF_BLOCKLIST_ENABLED, true);
this._loadBlocklist();
this._blocklistUpdated(null, null);
break;
case PREF_BLOCKLIST_LEVEL:
gBlocklistLevel = Math.min(getPref("getIntPref", PREF_BLOCKLIST_LEVEL, DEFAULT_LEVEL),
MAX_BLOCK_LEVEL);
this._blocklistUpdated(null, null);
break;
}
break;
}
},
/* See nsIBlocklistService */
isAddonBlocklisted: function(id, version, appVersion, toolkitVersion) {
return this.getAddonBlocklistState(id, version, appVersion, toolkitVersion) ==
Ci.nsIBlocklistService.STATE_BLOCKED;
},
/* See nsIBlocklistService */
getAddonBlocklistState: function(id, version, appVersion, toolkitVersion) {
if (!this._addonEntries)
this._loadBlocklist();
return this._getAddonBlocklistState(id, version, this._addonEntries,
appVersion, toolkitVersion);
},
/**
* Private version of getAddonBlocklistState that allows the caller to pass in
* the add-on blocklist entries to compare against.
*
* @param id
* The ID of the item to get the blocklist state for.
* @param version
* The version of the item to get the blocklist state for.
* @param addonEntries
* The add-on blocklist entries to compare against.
* @param appVersion
* The application version to compare to, will use the current
* version if null.
* @param toolkitVersion
* The toolkit version to compare to, will use the current version if
* null.
* @returns The blocklist state for the item, one of the STATE constants as
* defined in nsIBlocklistService.
*/
_getAddonBlocklistState: function(id, version, addonEntries, appVersion, toolkitVersion) {
if (!gBlocklistEnabled)
return Ci.nsIBlocklistService.STATE_NOT_BLOCKED;
if (!appVersion)
appVersion = gApp.version;
if (!toolkitVersion)
toolkitVersion = gApp.platformVersion;
var blItem = addonEntries[id];
if (!blItem)
return Ci.nsIBlocklistService.STATE_NOT_BLOCKED;
for (var i = 0; i < blItem.length; ++i) {
if (blItem[i].includesItem(version, appVersion, toolkitVersion))
return blItem[i].severity >= gBlocklistLevel ? Ci.nsIBlocklistService.STATE_BLOCKED :
Ci.nsIBlocklistService.STATE_SOFTBLOCKED;
}
return Ci.nsIBlocklistService.STATE_NOT_BLOCKED;
},
notify: function(aTimer) {
if (!gBlocklistEnabled)
return;
try {
var dsURI = gPref.getCharPref(PREF_BLOCKLIST_URL);
}
catch (e) {
LOG("Blocklist::notify: The " + PREF_BLOCKLIST_URL + " preference" +
" is missing!");
return;
}
var pingCountVersion = getPref("getIntPref", PREF_BLOCKLIST_PINGCOUNTVERSION, 0);
var pingCountTotal = getPref("getIntPref", PREF_BLOCKLIST_PINGCOUNTTOTAL, 1);
var daysSinceLastPing = 0;
if (pingCountVersion < 1 || pingCountTotal < 1) {
daysSinceLastPing = pingCountVersion == 0 ? "new" : "reset";
if (pingCountVersion < 1)
pingCountVersion = 1;
if (pingCountTotal < 1)
pingCountTotal = 1;
}
else {
// Seconds in one day is used because nsIUpdateTimerManager stores the
// last update time in seconds.
let secondsInDay = 60 * 60 * 24;
let lastUpdateTime = getPref("getIntPref", PREF_BLOCKLIST_LASTUPDATETIME, 0);
if (lastUpdateTime == 0) {
daysSinceLastPing = "invalid";
}
else {
let now = Math.round(Date.now() / 1000);
daysSinceLastPing = Math.floor((now - lastUpdateTime) / secondsInDay);
}
if (daysSinceLastPing == 0 || daysSinceLastPing == "invalid") {
pingCountVersion = pingCountTotal = "invalid";
}
}
dsURI = dsURI.replace(/%APP_ID%/g, gApp.ID);
dsURI = dsURI.replace(/%APP_VERSION%/g, gApp.version);
dsURI = dsURI.replace(/%PRODUCT%/g, gApp.name);
dsURI = dsURI.replace(/%VERSION%/g, gApp.version);
dsURI = dsURI.replace(/%BUILD_ID%/g, gApp.appBuildID);
dsURI = dsURI.replace(/%BUILD_TARGET%/g, gApp.OS + "_" + gABI);
dsURI = dsURI.replace(/%OS_VERSION%/g, gOSVersion);
dsURI = dsURI.replace(/%LOCALE%/g, getLocale());
dsURI = dsURI.replace(/%CHANNEL%/g, getUpdateChannel());
dsURI = dsURI.replace(/%PLATFORM_VERSION%/g, gApp.platformVersion);
dsURI = dsURI.replace(/%DISTRIBUTION%/g,
getDistributionPrefValue(PREF_APP_DISTRIBUTION));
dsURI = dsURI.replace(/%DISTRIBUTION_VERSION%/g,
getDistributionPrefValue(PREF_APP_DISTRIBUTION_VERSION));
dsURI = dsURI.replace(/%PING_COUNT%/g, pingCountVersion);
dsURI = dsURI.replace(/%TOTAL_PING_COUNT%/g, pingCountTotal);
dsURI = dsURI.replace(/%DAYS_SINCE_LAST_PING%/g, daysSinceLastPing);
dsURI = dsURI.replace(/\+/g, "%2B");
// Under normal operations it will take around 5,883,516 years before the
// preferences used to store pingCountVersion and pingCountTotal will rollover
// so this code doesn't bother trying to do the "right thing" here.
if (pingCountVersion != "invalid") {
pingCountVersion++;
if (pingCountVersion > 2147483647) {
// Rollover to -1 if the value is greater than what is support by an
// integer preference. The -1 indicates that the counter has been reset.
pingCountVersion = -1;
}
gPref.setIntPref(PREF_BLOCKLIST_PINGCOUNTVERSION, pingCountVersion);
}
if (pingCountTotal != "invalid") {
pingCountTotal++;
if (pingCountTotal > 2147483647) {
// Rollover to 1 if the value is greater than what is support by an
// integer preference.
pingCountTotal = -1;
}
gPref.setIntPref(PREF_BLOCKLIST_PINGCOUNTTOTAL, pingCountTotal);
}
// Verify that the URI is valid
try {
var uri = newURI(dsURI);
}
catch (e) {
LOG("Blocklist::notify: There was an error creating the blocklist URI\r\n" +
"for: " + dsURI + ", error: " + e);
return;
}
var request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].
createInstance(Ci.nsIXMLHttpRequest);
request.open("GET", uri.spec, true);
request.channel.notificationCallbacks = new gCertUtils.BadCertHandler();
request.overrideMimeType("text/xml");
request.setRequestHeader("Cache-Control", "no-cache");
request.QueryInterface(Components.interfaces.nsIJSXMLHttpRequest);
var self = this;
request.onerror = function(event) { self.onXMLError(event); };
request.onload = function(event) { self.onXMLLoad(event); };
request.send(null);
// When the blocklist loads we need to compare it to the current copy so
// make sure we have loaded it.
if (!this._addonEntries)
this._loadBlocklist();
},
onXMLLoad: function(aEvent) {
var request = aEvent.target;
try {
gCertUtils.checkCert(request.channel);
}
catch (e) {
LOG("Blocklist::onXMLLoad: " + e);
return;
}
var responseXML = request.responseXML;
if (!responseXML || responseXML.documentElement.namespaceURI == XMLURI_PARSE_ERROR ||
(request.status != 200 && request.status != 0)) {
LOG("Blocklist::onXMLLoad: there was an error during load");
return;
}
var blocklistFile = FileUtils.getFile(KEY_PROFILEDIR, [FILE_BLOCKLIST]);
if (blocklistFile.exists())
blocklistFile.remove(false);
var fos = FileUtils.openSafeFileOutputStream(blocklistFile);
fos.write(request.responseText, request.responseText.length);
FileUtils.closeSafeFileOutputStream(fos);
var oldAddonEntries = this._addonEntries;
var oldPluginEntries = this._pluginEntries;
this._addonEntries = { };
this._pluginEntries = { };
this._loadBlocklistFromFile(FileUtils.getFile(KEY_PROFILEDIR,
[FILE_BLOCKLIST]));
this._blocklistUpdated(oldAddonEntries, oldPluginEntries);
},
onXMLError: function(aEvent) {
try {
var request = aEvent.target;
// the following may throw (e.g. a local file or timeout)
var status = request.status;
}
catch (e) {
request = aEvent.target.channel.QueryInterface(Ci.nsIRequest);
status = request.status;
}
var statusText = "nsIXMLHttpRequest channel unavailable";
// When status is 0 we don't have a valid channel.
if (status != 0) {
try {
statusText = request.statusText;
} catch (e) {
}
}
LOG("Blocklist:onError: There was an error loading the blocklist file\r\n" +
statusText);
},
/**
* Finds the newest blocklist file from the application and the profile and
* load it or does nothing if neither exist.
*/
_loadBlocklist: function() {
this._addonEntries = { };
this._pluginEntries = { };
var profFile = FileUtils.getFile(KEY_PROFILEDIR, [FILE_BLOCKLIST]);
if (profFile.exists()) {
this._loadBlocklistFromFile(profFile);
return;
}
var appFile = FileUtils.getFile(KEY_APPDIR, [FILE_BLOCKLIST]);
if (appFile.exists()) {
this._loadBlocklistFromFile(appFile);
return;
}
LOG("Blocklist::_loadBlocklist: no XML File found");
},
/**
# The blocklist XML file looks something like this:
#
# <blocklist xmlns="http://www.mozilla.org/2006/addons-blocklist">
# <emItems>
# <emItem id="item_1@domain">
# <versionRange minVersion="1.0" maxVersion="2.0.*">
# <targetApplication id="{ec8030f7-c20a-464f-9b0e-13a3a9e97384}">
# <versionRange minVersion="1.5" maxVersion="1.5.*"/>
# <versionRange minVersion="1.7" maxVersion="1.7.*"/>
# </targetApplication>
# <targetApplication id="toolkit@mozilla.org">
# <versionRange minVersion="1.9" maxVersion="1.9.*"/>
# </targetApplication>
# </versionRange>
# <versionRange minVersion="3.0" maxVersion="3.0.*">
# <targetApplication id="{ec8030f7-c20a-464f-9b0e-13a3a9e97384}">
# <versionRange minVersion="1.5" maxVersion="1.5.*"/>
# </targetApplication>
# <targetApplication id="toolkit@mozilla.org">
# <versionRange minVersion="1.9" maxVersion="1.9.*"/>
# </targetApplication>
# </versionRange>
# </emItem>
# <emItem id="item_2@domain">
# <versionRange minVersion="3.1" maxVersion="4.*"/>
# </emItem>
# <emItem id="item_3@domain">
# <versionRange>
# <targetApplication id="{ec8030f7-c20a-464f-9b0e-13a3a9e97384}">
# <versionRange minVersion="1.5" maxVersion="1.5.*"/>
# </targetApplication>
# </versionRange>
# </emItem>
# <emItem id="item_4@domain">
# <versionRange>
# <targetApplication>
# <versionRange minVersion="1.5" maxVersion="1.5.*"/>
# </targetApplication>
# </versionRange>
# <emItem id="item_5@domain"/>
# </emItems>
# <pluginItems>
# <pluginItem>
# <!-- All match tags must match a plugin to blocklist a plugin -->
# <match name="name" exp="some plugin"/>
# <match name="description" exp="1[.]2[.]3"/>
# </pluginItem>
# </pluginItems>
# </blocklist>
*/
_loadBlocklistFromFile: function(file) {
if (!gBlocklistEnabled) {
LOG("Blocklist::_loadBlocklistFromFile: blocklist is disabled");
return;
}
if (!file.exists()) {
LOG("Blocklist::_loadBlocklistFromFile: XML File does not exist");
return;
}
var fileStream = Components.classes["@mozilla.org/network/file-input-stream;1"]
.createInstance(Components.interfaces.nsIFileInputStream);
fileStream.init(file, FileUtils.MODE_RDONLY, FileUtils.PERMS_FILE, 0);
try {
var parser = Cc["@mozilla.org/xmlextras/domparser;1"].
createInstance(Ci.nsIDOMParser);
var doc = parser.parseFromStream(fileStream, "UTF-8", file.fileSize, "text/xml");
if (doc.documentElement.namespaceURI != XMLURI_BLOCKLIST) {
LOG("Blocklist::_loadBlocklistFromFile: aborting due to incorrect " +
"XML Namespace.\r\nExpected: " + XMLURI_BLOCKLIST + "\r\n" +
"Received: " + doc.documentElement.namespaceURI);
return;
}
var childNodes = doc.documentElement.childNodes;
for (var i = 0; i < childNodes.length; ++i) {
var element = childNodes[i];
if (!(element instanceof Ci.nsIDOMElement))
continue;
switch (element.localName) {
case "emItems":
this._addonEntries = this._processItemNodes(element.childNodes, "em",
this._handleEmItemNode);
break;
case "pluginItems":
this._pluginEntries = this._processItemNodes(element.childNodes, "plugin",
this._handlePluginItemNode);
break;
default:
Services.obs.notifyObservers(element,
"blocklist-data-" + element.localName,
null);
}
}
}
catch (e) {
LOG("Blocklist::_loadBlocklistFromFile: Error constructing blocklist " + e);
return;
}
fileStream.close();
},
_processItemNodes: function(itemNodes, prefix, handler) {
var result = [];
var itemName = prefix + "Item";
for (var i = 0; i < itemNodes.length; ++i) {
var blocklistElement = itemNodes.item(i);
if (!(blocklistElement instanceof Ci.nsIDOMElement) ||
blocklistElement.localName != itemName)
continue;
handler(blocklistElement, result);
}
return result;
},
_handleEmItemNode: function(blocklistElement, result) {
if (!matchesOSABI(blocklistElement))
return;
var versionNodes = blocklistElement.childNodes;
var id = blocklistElement.getAttribute("id");
result[id] = [];
for (var x = 0; x < versionNodes.length; ++x) {
var versionRangeElement = versionNodes.item(x);
if (!(versionRangeElement instanceof Ci.nsIDOMElement) ||
versionRangeElement.localName != "versionRange")
continue;
result[id].push(new BlocklistItemData(versionRangeElement));
}
// if only the extension ID is specified block all versions of the
// extension for the current application.
if (result[id].length == 0)
result[id].push(new BlocklistItemData(null));
},
_handlePluginItemNode: function(blocklistElement, result) {
if (!matchesOSABI(blocklistElement))
return;
var matchNodes = blocklistElement.childNodes;
var blockEntry = {
matches: {},
versions: []
};
var hasMatch = false;
for (var x = 0; x < matchNodes.length; ++x) {
var matchElement = matchNodes.item(x);
if (!(matchElement instanceof Ci.nsIDOMElement))
continue;
if (matchElement.localName == "match") {
var name = matchElement.getAttribute("name");
var exp = matchElement.getAttribute("exp");
try {
blockEntry.matches[name] = new RegExp(exp, "m");
hasMatch = true;
} catch (e) {
// Ignore invalid regular expressions
}
}
if (matchElement.localName == "versionRange")
blockEntry.versions.push(new BlocklistItemData(matchElement));
}
// Plugin entries require *something* to match to an actual plugin
if (!hasMatch)
return;
// Add a default versionRange if there wasn't one specified
if (blockEntry.versions.length == 0)
blockEntry.versions.push(new BlocklistItemData(null));
result.push(blockEntry);
},
/* See nsIBlocklistService */
getPluginBlocklistState: function(plugin, appVersion, toolkitVersion) {
if (!this._pluginEntries)
this._loadBlocklist();
return this._getPluginBlocklistState(plugin, this._pluginEntries,
appVersion, toolkitVersion);
},
/**
* Private version of getPluginBlocklistState that allows the caller to pass in
* the plugin blocklist entries.
*
* @param plugin
* The nsIPluginTag to get the blocklist state for.
* @param pluginEntries
* The plugin blocklist entries to compare against.
* @param appVersion
* The application version to compare to, will use the current
* version if null.
* @param toolkitVersion
* The toolkit version to compare to, will use the current version if
* null.
* @returns The blocklist state for the item, one of the STATE constants as
* defined in nsIBlocklistService.
*/
_getPluginBlocklistState: function(plugin, pluginEntries, appVersion, toolkitVersion) {
if (!gBlocklistEnabled)
return Ci.nsIBlocklistService.STATE_NOT_BLOCKED;
if (!appVersion)
appVersion = gApp.version;
if (!toolkitVersion)
toolkitVersion = gApp.platformVersion;
for each (var blockEntry in pluginEntries) {
var matchFailed = false;
for (var name in blockEntry.matches) {
if (!(name in plugin) ||
typeof(plugin[name]) != "string" ||
!blockEntry.matches[name].test(plugin[name])) {
matchFailed = true;
break;
}
}
if (matchFailed)
continue;
for (var i = 0; i < blockEntry.versions.length; i++) {
if (blockEntry.versions[i].includesItem(plugin.version, appVersion,
toolkitVersion)) {
if (blockEntry.versions[i].severity >= gBlocklistLevel)
return Ci.nsIBlocklistService.STATE_BLOCKED;
if (blockEntry.versions[i].severity == SEVERITY_OUTDATED)
return Ci.nsIBlocklistService.STATE_OUTDATED;
return Ci.nsIBlocklistService.STATE_SOFTBLOCKED;
}
}
}
return Ci.nsIBlocklistService.STATE_NOT_BLOCKED;
},
_blocklistUpdated: function(oldAddonEntries, oldPluginEntries) {
var addonList = [];
var self = this;
AddonManager.getAddonsByTypes(["extension", "theme", "locale"], function(addons) {
for (let i = 0; i < addons.length; i++) {
let oldState = Ci.nsIBlocklistService.STATE_NOTBLOCKED;
if (oldAddonEntries)
oldState = self._getAddonBlocklistState(addons[i].id, addons[i].version,
oldAddonEntries);
let state = self.getAddonBlocklistState(addons[i].id, addons[i].version);
LOG("Blocklist state for " + addons[i].id + " changed from " +
oldState + " to " + state);
// Don't warn about add-ons becoming unblocked.
if (state == 0)
continue;
// We don't want to re-warn about add-ons
if (state == oldState)
continue;
// If an add-on has dropped from hard to soft blocked just mark it as
// user disabled and don't warn about it.
if (state == Ci.nsIBlocklistService.STATE_SOFTBLOCKED &&
oldState == Ci.nsIBlocklistService.STATE_BLOCKED) {
addons[i].userDisabled = true;
continue;
}
// If the add-on is already disabled for some reason then don't warn
// about it
if (!addons[i].isActive)
continue;
addonList.push({
name: addons[i].name,
version: addons[i].version,
icon: addons[i].iconURL,
disable: false,
blocked: state == Ci.nsIBlocklistService.STATE_BLOCKED,
item: addons[i]
});
}
AddonManagerPrivate.updateAddonAppDisabledStates();
var phs = Cc["@mozilla.org/plugin/host;1"].
getService(Ci.nsIPluginHost);
var plugins = phs.getPluginTags();
for (let i = 0; i < plugins.length; i++) {
let oldState = -1;
if (oldPluginEntries)
oldState = self._getPluginBlocklistState(plugins[i], oldPluginEntries);
let state = self.getPluginBlocklistState(plugins[i]);
LOG("Blocklist state for " + plugins[i].name + " changed from " +
oldState + " to " + state);
// We don't want to re-warn about items
if (state == oldState)
continue;
if (plugins[i].blocklisted) {
if (state == Ci.nsIBlocklistService.STATE_SOFTBLOCKED)
plugins[i].disabled = true;
}
else if (!plugins[i].disabled && state != Ci.nsIBlocklistService.STATE_NOT_BLOCKED) {
if (state == Ci.nsIBlocklistService.STATE_OUTDATED) {
gPref.setBoolPref(PREF_PLUGINS_NOTIFYUSER, true);
}
else {
addonList.push({
name: plugins[i].name,
version: plugins[i].version,
icon: "chrome://mozapps/skin/plugins/pluginGeneric.png",
disable: false,
blocked: state == Ci.nsIBlocklistService.STATE_BLOCKED,
item: plugins[i]
});
}
}
plugins[i].blocklisted = state == Ci.nsIBlocklistService.STATE_BLOCKED;
}
if (addonList.length == 0)
return;
if ("@mozilla.org/addons/blocklist-prompt;1" in Cc) {
try {
let blockedPrompter = Cc["@mozilla.org/addons/blocklist-prompt;1"]
.getService(Ci.nsIBlocklistPrompt);
blockedPrompter.prompt(addonList);
} catch (e) {
LOG(e);
}
return;
}
var args = {
restart: false,
list: addonList
};
// This lets the dialog get the raw js object
args.wrappedJSObject = args;
var ww = Cc["@mozilla.org/embedcomp/window-watcher;1"].
getService(Ci.nsIWindowWatcher);
ww.openWindow(null, URI_BLOCKLIST_DIALOG, "",
"chrome,centerscreen,dialog,modal,titlebar", args);
for (let i = 0; i < addonList.length; i++) {
if (!addonList[i].disable)
continue;
if (addonList[i].item instanceof Ci.nsIPluginTag)
addonList[i].item.disabled = true;
else
addonList[i].item.userDisabled = true;
}
if (args.restart)
restartApp();
});
},
classID: Components.ID("{66354bc9-7ed1-4692-ae1d-8da97d6b205e}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
Ci.nsIBlocklistService,
Ci.nsITimerCallback]),
};
/**
* Helper for constructing a blocklist.
*/
function BlocklistItemData(versionRangeElement) {
var versionRange = this.getBlocklistVersionRange(versionRangeElement);
this.minVersion = versionRange.minVersion;
this.maxVersion = versionRange.maxVersion;
if (versionRangeElement && versionRangeElement.hasAttribute("severity"))
this.severity = versionRangeElement.getAttribute("severity");
else
this.severity = DEFAULT_SEVERITY;
this.targetApps = { };
var found = false;
if (versionRangeElement) {
for (var i = 0; i < versionRangeElement.childNodes.length; ++i) {
var targetAppElement = versionRangeElement.childNodes.item(i);
if (!(targetAppElement instanceof Ci.nsIDOMElement) ||
targetAppElement.localName != "targetApplication")
continue;
found = true;
// default to the current application if id is not provided.
var appID = targetAppElement.hasAttribute("id") ? targetAppElement.getAttribute("id") : gApp.ID;
this.targetApps[appID] = this.getBlocklistAppVersions(targetAppElement);
}
}
// Default to all versions of the current application when no targetApplication
// elements were found
if (!found)
this.targetApps[gApp.ID] = this.getBlocklistAppVersions(null);
}
BlocklistItemData.prototype = {
/**
* Tests if a version of an item is included in the version range and target
* application information represented by this BlocklistItemData using the
* provided application and toolkit versions.
* @param version
* The version of the item being tested.
* @param appVersion
* The application version to test with.
* @param toolkitVersion
* The toolkit version to test with.
* @returns True if the version range covers the item version and application
* or toolkit version.
*/
includesItem: function(version, appVersion, toolkitVersion) {
// Some platforms have no version for plugins, these don't match if there
// was a min/maxVersion provided
if (!version && (this.minVersion || this.maxVersion))
return false;
// Check if the item version matches
if (!this.matchesRange(version, this.minVersion, this.maxVersion))
return false;
// Check if the application version matches
if (this.matchesTargetRange(gApp.ID, appVersion))
return true;
// Check if the toolkit version matches
return this.matchesTargetRange(TOOLKIT_ID, toolkitVersion);
},
/**
* Checks if a version is higher than or equal to the minVersion (if provided)
* and lower than or equal to the maxVersion (if provided).
* @param version
* The version to test.
* @param minVersion
* The minimum version. If null it is assumed that version is always
* larger.
* @param maxVersion
* The maximum version. If null it is assumed that version is always
* smaller.
*/
matchesRange: function(version, minVersion, maxVersion) {
if (minVersion && gVersionChecker.compare(version, minVersion) < 0)
return false;
if (maxVersion && gVersionChecker.compare(version, maxVersion) > 0)
return false;
return true;
},
/**
* Tests if there is a matching range for the given target application id and
* version.
* @param appID
* The application ID to test for, may be for an application or toolkit
* @param appVersion
* The version of the application to test for.
* @returns True if this version range covers the application version given.
*/
matchesTargetRange: function(appID, appVersion) {
var blTargetApp = this.targetApps[appID];
if (!blTargetApp)
return false;
for (var x = 0; x < blTargetApp.length; ++x) {
if (this.matchesRange(appVersion, blTargetApp[x].minVersion, blTargetApp[x].maxVersion))
return true;
}
return false;
},
/**
* Retrieves a version range (e.g. minVersion and maxVersion) for a
* blocklist item's targetApplication element.
* @param targetAppElement
* A targetApplication blocklist element.
* @returns An array of JS objects with the following properties:
* "minVersion" The minimum version in a version range (default = null).
* "maxVersion" The maximum version in a version range (default = null).
*/
getBlocklistAppVersions: function(targetAppElement) {
var appVersions = [ ];
if (targetAppElement) {
for (var i = 0; i < targetAppElement.childNodes.length; ++i) {
var versionRangeElement = targetAppElement.childNodes.item(i);
if (!(versionRangeElement instanceof Ci.nsIDOMElement) ||
versionRangeElement.localName != "versionRange")
continue;
appVersions.push(this.getBlocklistVersionRange(versionRangeElement));
}
}
// return minVersion = null and maxVersion = null if no specific versionRange
// elements were found
if (appVersions.length == 0)
appVersions.push(this.getBlocklistVersionRange(null));
return appVersions;
},
/**
* Retrieves a version range (e.g. minVersion and maxVersion) for a blocklist
* versionRange element.
* @param versionRangeElement
* The versionRange blocklist element.
* @returns A JS object with the following properties:
* "minVersion" The minimum version in a version range (default = null).
* "maxVersion" The maximum version in a version range (default = null).
*/
getBlocklistVersionRange: function(versionRangeElement) {
var minVersion = null;
var maxVersion = null;
if (!versionRangeElement)
return { minVersion: minVersion, maxVersion: maxVersion };
if (versionRangeElement.hasAttribute("minVersion"))
minVersion = versionRangeElement.getAttribute("minVersion");
if (versionRangeElement.hasAttribute("maxVersion"))
maxVersion = versionRangeElement.getAttribute("maxVersion");
return { minVersion: minVersion, maxVersion: maxVersion };
}
};
var NSGetFactory = XPCOMUtils.generateNSGetFactory([Blocklist]);
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