diff options
Diffstat (limited to 'toolkit/mozapps/extensions/nsBlocklistService.js')
| -rw-r--r-- | toolkit/mozapps/extensions/nsBlocklistService.js | 1478 |
1 files changed, 1478 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/nsBlocklistService.js b/toolkit/mozapps/extensions/nsBlocklistService.js new file mode 100644 index 000000000..936c9d1b5 --- /dev/null +++ b/toolkit/mozapps/extensions/nsBlocklistService.js @@ -0,0 +1,1478 @@ +/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ + +/* 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/. */ + +"use strict"; + +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/Services.jsm"); + +try { + // AddonManager.jsm doesn't allow itself to be imported in the child + // process. We're used in the child process (for now), so guard against + // this. + Components.utils.import("resource://gre/modules/AddonManager.jsm"); +} catch (e) { +} + +XPCOMUtils.defineLazyModuleGetter(this, "FileUtils", + "resource://gre/modules/FileUtils.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "UpdateChannel", + "resource://gre/modules/UpdateChannel.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "OS", + "resource://gre/modules/osfile.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "Task", + "resource://gre/modules/Task.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_ITEM_URL = "extensions.blocklist.itemURL"; +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_BLOCKLIST_SUPPRESSUI = "extensions.blocklist.suppressUI"; +const PREF_PLUGINS_NOTIFYUSER = "plugins.update.notifyUser"; +const PREF_GENERAL_USERAGENT_LOCALE = "general.useragent.locale"; +const PREF_APP_DISTRIBUTION = "distribution.id"; +const PREF_APP_DISTRIBUTION_VERSION = "distribution.version"; +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; +const VULNERABILITYSTATUS_NONE = 0; +const VULNERABILITYSTATUS_UPDATE_AVAILABLE = 1; +const VULNERABILITYSTATUS_NO_UPDATE = 2; + +const EXTENSION_BLOCK_FILTERS = ["id", "name", "creator", "homepageURL", "updateURL"]; + +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.defineLazyServiceGetter(this, "gCertBlocklistService", + "@mozilla.org/security/certblocklist;1", + "nsICertBlocklist"); + +XPCOMUtils.defineLazyGetter(this, "gPref", function bls_gPref() { + return Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService). + QueryInterface(Ci.nsIPrefBranch); +}); + +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; +}); + +/** + * 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.getComplexValue(PREF_GENERAL_USERAGENT_LOCALE, + Ci.nsIPrefLocalizedString).data; + } catch (e) {} + + return gPref.getCharPref(PREF_GENERAL_USERAGENT_LOCALE); +} + +/* 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; +} + +/** + * Parse a string representation of a regular expression. Needed because we + * use the /pattern/flags form (because it's detectable), which is only + * supported as a literal in JS. + * + * @param aStr + * String representation of regexp + * @return RegExp instance + */ +function parseRegExp(aStr) { + let lastSlash = aStr.lastIndexOf("/"); + let pattern = aStr.slice(1, lastSlash); + let flags = aStr.slice(lastSlash + 1); + return new RegExp(pattern, flags); +} + +/** + * Helper function to test if the blockEntry matches with the plugin. + * + * @param blockEntry + * The plugin blocklist entries to compare against. + * @param plugin + * The nsIPluginTag to get the blocklist state for. + * @returns True if the blockEntry matches the plugin, false otherwise. + */ +function matchesAllPluginNames(blockEntry, plugin) { + for (let name in blockEntry.matches) { + if (!(name in plugin) || + typeof(plugin[name]) != "string" || + !blockEntry.matches[name].test(plugin[name])) { + return false; + } + } + return true; +} + +/** + * 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() { + Services.obs.addObserver(this, "xpcom-shutdown", false); + Services.obs.addObserver(this, "sessionstore-windows-restored", 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); + gPref.addObserver(PREF_EM_LOGGING_ENABLED, this, false); + this.wrappedJSObject = this; +} + +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 Blocklist_observe(aSubject, aTopic, aData) { + switch (aTopic) { + case "xpcom-shutdown": + Services.obs.removeObserver(this, "xpcom-shutdown"); + gPref.removeObserver("extensions.blocklist.", this); + gPref.removeObserver(PREF_EM_LOGGING_ENABLED, this); + break; + case "nsPref:changed": + switch (aData) { + case PREF_EM_LOGGING_ENABLED: + gLoggingEnabled = getPref("getBoolPref", PREF_EM_LOGGING_ENABLED, false); + break; + 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; + case "sessionstore-windows-restored": + Services.obs.removeObserver(this, "sessionstore-windows-restored"); + this._preloadBlocklist(); + break; + } + }, + + /* See nsIBlocklistService */ + isAddonBlocklisted: function Blocklist_isAddonBlocklisted(addon, appVersion, toolkitVersion) { + return this.getAddonBlocklistState(addon, appVersion, toolkitVersion) == + Ci.nsIBlocklistService.STATE_BLOCKED; + }, + + /* See nsIBlocklistService */ + getAddonBlocklistState: function Blocklist_getAddonBlocklistState(addon, appVersion, toolkitVersion) { + if (!this._isBlocklistLoaded()) + this._loadBlocklist(); + return this._getAddonBlocklistState(addon, 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 Blocklist_getAddonBlocklistStateCall(addon, + addonEntries, appVersion, toolkitVersion) { + if (!gBlocklistEnabled) + return Ci.nsIBlocklistService.STATE_NOT_BLOCKED; + + if (!appVersion) + appVersion = gApp.version; + if (!toolkitVersion) + toolkitVersion = gApp.platformVersion; + + var blItem = this._findMatchingAddonEntry(addonEntries, addon); + if (!blItem) + return Ci.nsIBlocklistService.STATE_NOT_BLOCKED; + + for (let currentblItem of blItem.versions) { + if (currentblItem.includesItem(addon.version, appVersion, toolkitVersion)) + return currentblItem.severity >= gBlocklistLevel ? Ci.nsIBlocklistService.STATE_BLOCKED : + Ci.nsIBlocklistService.STATE_SOFTBLOCKED; + } + return Ci.nsIBlocklistService.STATE_NOT_BLOCKED; + }, + + /** + * Returns the set of prefs of the add-on stored in the blocklist file + * (probably to revert them on disabling). + * @param addon + * The add-on whose to-be-reset prefs are to be found. + */ + _getAddonPrefs: function Blocklist_getAddonPrefs(addon) { + let entry = this._findMatchingAddonEntry(this._addonEntries, addon); + return entry.prefs.slice(0); + }, + + _findMatchingAddonEntry: function Blocklist_findMatchingAddonEntry(aAddonEntries, + aAddon) { + if (!aAddon) + return null; + // Returns true if the params object passes the constraints set by entry. + // (For every non-null property in entry, the same key must exist in + // params and value must be the same) + function checkEntry(entry, params) { + for (let [key, value] of entry) { + if (value === null || value === undefined) + continue; + if (params[key]) { + if (value instanceof RegExp) { + if (!value.test(params[key])) { + return false; + } + } else if (value !== params[key]) { + return false; + } + } else { + return false; + } + } + return true; + } + + let params = {}; + for (let filter of EXTENSION_BLOCK_FILTERS) { + params[filter] = aAddon[filter]; + } + if (params.creator) + params.creator = params.creator.name; + for (let entry of aAddonEntries) { + if (checkEntry(entry.attributes, params)) { + return entry; + } + } + return null; + }, + + /* See nsIBlocklistService */ + getAddonBlocklistURL: function Blocklist_getAddonBlocklistURL(addon, appVersion, toolkitVersion) { + if (!gBlocklistEnabled) + return ""; + + if (!this._isBlocklistLoaded()) + this._loadBlocklist(); + + let blItem = this._findMatchingAddonEntry(this._addonEntries, addon); + if (!blItem || !blItem.blockID) + return null; + + return this._createBlocklistURL(blItem.blockID); + }, + + _createBlocklistURL: function Blocklist_createBlocklistURL(id) { + let url = Services.urlFormatter.formatURLPref(PREF_BLOCKLIST_ITEM_URL); + url = url.replace(/%blockID%/g, id); + + return url; + }, + + notify: function Blocklist_notify(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 == 0) { + daysSinceLastPing = "new"; + } + 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"; + } + } + + if (pingCountVersion < 1) + pingCountVersion = 1; + if (pingCountTotal < 1) + pingCountTotal = 1; + + 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, UpdateChannel.get()); + 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; + } + + LOG("Blocklist::notify: Requesting " + uri.spec); + 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.addEventListener("error", function errorEventListener(event) { + self.onXMLError(event); }, false); + request.addEventListener("load", function loadEventListener(event) { + self.onXMLLoad(event); }, false); + 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._isBlocklistLoaded()) + this._loadBlocklist(); + }, + + onXMLLoad: Task.async(function* (aEvent) { + let request = aEvent.target; + try { + gCertUtils.checkCert(request.channel); + } + catch (e) { + LOG("Blocklist::onXMLLoad: " + e); + return; + } + let 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 oldAddonEntries = this._addonEntries; + var oldPluginEntries = this._pluginEntries; + this._addonEntries = []; + this._pluginEntries = []; + + this._loadBlocklistFromString(request.responseText); + this._blocklistUpdated(oldAddonEntries, oldPluginEntries); + + try { + let path = OS.Path.join(OS.Constants.Path.profileDir, FILE_BLOCKLIST); + yield OS.File.writeAtomic(path, request.responseText, {tmpPath: path + ".tmp"}); + } catch (e) { + LOG("Blocklist::onXMLLoad: " + e); + } + }), + + onXMLError: function Blocklist_onXMLError(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 Blocklist_loadBlocklist() { + 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" blockID="i1"> +# <prefs> +# <pref>accessibility.accesskeycausesactivation</pref> +# <pref>accessibility.blockautorefresh</pref> +# </prefs> +# <versionRange minVersion="1.0" maxVersion="2.0.*"> +# <targetApplication id="{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}"> +# <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="{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}"> +# <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" blockID="i2"> +# <versionRange minVersion="3.1" maxVersion="4.*"/> +# </emItem> +# <emItem id="item_3@domain"> +# <versionRange> +# <targetApplication id="{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}"> +# <versionRange minVersion="1.5" maxVersion="1.5.*"/> +# </targetApplication> +# </versionRange> +# </emItem> +# <emItem id="item_4@domain" blockID="i3"> +# <versionRange> +# <targetApplication> +# <versionRange minVersion="1.5" maxVersion="1.5.*"/> +# </targetApplication> +# </versionRange> +# <emItem id="/@badperson\.com$/"/> +# </emItems> +# <pluginItems> +# <pluginItem blockID="i4"> +# <!-- 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> +# <certItems> +# <!-- issuerName is the DER issuer name data base64 encoded... --> +# <certItem issuerName="MA0xCzAJBgNVBAMMAmNh"> +# <!-- ... as is the serial number DER data --> +# <serialNumber>AkHVNA==</serialNumber> +# </certItem> +# </certItems> +# </blocklist> + */ + + _loadBlocklistFromFile: function Blocklist_loadBlocklistFromFile(file) { + if (!gBlocklistEnabled) { + LOG("Blocklist::_loadBlocklistFromFile: blocklist is disabled"); + return; + } + + let telemetry = Services.telemetry; + + if (this._isBlocklistPreloaded()) { + telemetry.getHistogramById("BLOCKLIST_SYNC_FILE_LOAD").add(false); + this._loadBlocklistFromString(this._preloadedBlocklistContent); + delete this._preloadedBlocklistContent; + return; + } + + if (!file.exists()) { + LOG("Blocklist::_loadBlocklistFromFile: XML File does not exist " + file.path); + return; + } + + telemetry.getHistogramById("BLOCKLIST_SYNC_FILE_LOAD").add(true); + + let text = ""; + let fstream = null; + let cstream = null; + + try { + fstream = Components.classes["@mozilla.org/network/file-input-stream;1"] + .createInstance(Components.interfaces.nsIFileInputStream); + cstream = Components.classes["@mozilla.org/intl/converter-input-stream;1"] + .createInstance(Components.interfaces.nsIConverterInputStream); + + fstream.init(file, FileUtils.MODE_RDONLY, FileUtils.PERMS_FILE, 0); + cstream.init(fstream, "UTF-8", 0, 0); + + let str = {}; + let read = 0; + + do { + read = cstream.readString(0xffffffff, str); // read as much as we can and put it in str.value + text += str.value; + } while (read != 0); + } catch (e) { + LOG("Blocklist::_loadBlocklistFromFile: Failed to load XML file " + e); + } finally { + if (cstream) + cstream.close(); + if (fstream) + fstream.close(); + } + + if (text) + this._loadBlocklistFromString(text); + }, + + _isBlocklistLoaded: function() { + return this._addonEntries != null && this._pluginEntries != null; + }, + + _isBlocklistPreloaded: function() { + return this._preloadedBlocklistContent != null; + }, + + /* Used for testing */ + _clear: function() { + this._addonEntries = null; + this._pluginEntries = null; + this._preloadedBlocklistContent = null; + }, + + _preloadBlocklist: Task.async(function*() { + let profPath = OS.Path.join(OS.Constants.Path.profileDir, FILE_BLOCKLIST); + try { + yield this._preloadBlocklistFile(profPath); + return; + } catch (e) { + LOG("Blocklist::_preloadBlocklist: Failed to load XML file " + e) + } + + var appFile = FileUtils.getFile(KEY_APPDIR, [FILE_BLOCKLIST]); + try{ + yield this._preloadBlocklistFile(appFile.path); + return; + } catch (e) { + LOG("Blocklist::_preloadBlocklist: Failed to load XML file " + e) + } + + LOG("Blocklist::_preloadBlocklist: no XML File found"); + }), + + _preloadBlocklistFile: Task.async(function* (path){ + if (this._addonEntries) { + // The file has been already loaded. + return; + } + + if (!gBlocklistEnabled) { + LOG("Blocklist::_preloadBlocklistFile: blocklist is disabled"); + return; + } + + let text = yield OS.File.read(path, { encoding: "utf-8" }); + + if (!this._addonEntries) { + // Store the content only if a sync load has not been performed in the meantime. + this._preloadedBlocklistContent = text; + } + }), + + _loadBlocklistFromString : function Blocklist_loadBlocklistFromString(text) { + try { + var parser = Cc["@mozilla.org/xmlextras/domparser;1"]. + createInstance(Ci.nsIDOMParser); + var doc = parser.parseFromString(text, "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 (let element of childNodes) { + 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; + case "certItems": + this._processItemNodes(element.childNodes, "cert", + this._handleCertItemNode.bind(this)); + break; + default: + Services.obs.notifyObservers(element, + "blocklist-data-" + element.localName, + null); + } + } + gCertBlocklistService.saveEntries(); + } + catch (e) { + LOG("Blocklist::_loadBlocklistFromFile: Error constructing blocklist " + e); + return; + } + }, + + _processItemNodes: function Blocklist_processItemNodes(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; + }, + + _handleCertItemNode: function Blocklist_handleCertItemNode(blocklistElement, + result) { + let issuer = blocklistElement.getAttribute("issuerName"); + for (let snElement of blocklistElement.children) { + try { + gCertBlocklistService.addRevokedCert(issuer, snElement.textContent); + } catch (e) { + // we want to keep trying other elements since missing all items + // is worse than missing one + LOG("Blocklist::_handleCertItemNode: Error adding revoked cert " + e); + } + } + }, + + _handleEmItemNode: function Blocklist_handleEmItemNode(blocklistElement, result) { + if (!matchesOSABI(blocklistElement)) + return; + + let blockEntry = { + versions: [], + prefs: [], + blockID: null, + attributes: new Map() + // Atleast one of EXTENSION_BLOCK_FILTERS must get added to attributes + }; + + // Any filter starting with '/' is interpreted as a regex. So if an attribute + // starts with a '/' it must be checked via a regex. + function regExpCheck(attr) { + return attr.startsWith("/") ? parseRegExp(attr) : attr; + } + + for (let filter of EXTENSION_BLOCK_FILTERS) { + let attr = blocklistElement.getAttribute(filter); + if (attr) + blockEntry.attributes.set(filter, regExpCheck(attr)); + } + + var childNodes = blocklistElement.childNodes; + + for (let x = 0; x < childNodes.length; x++) { + var childElement = childNodes.item(x); + if (!(childElement instanceof Ci.nsIDOMElement)) + continue; + if (childElement.localName === "prefs") { + let prefElements = childElement.childNodes; + for (let i = 0; i < prefElements.length; i++) { + let prefElement = prefElements.item(i); + if (!(prefElement instanceof Ci.nsIDOMElement) || + prefElement.localName !== "pref") + continue; + blockEntry.prefs.push(prefElement.textContent); + } + } + else if (childElement.localName === "versionRange") + blockEntry.versions.push(new BlocklistItemData(childElement)); + } + // if only the extension ID is specified block all versions of the + // extension for the current application. + if (blockEntry.versions.length == 0) + blockEntry.versions.push(new BlocklistItemData(null)); + + blockEntry.blockID = blocklistElement.getAttribute("blockID"); + + result.push(blockEntry); + }, + + _handlePluginItemNode: function Blocklist_handlePluginItemNode(blocklistElement, result) { + if (!matchesOSABI(blocklistElement)) + return; + + var matchNodes = blocklistElement.childNodes; + var blockEntry = { + matches: {}, + versions: [], + blockID: null, + infoURL: null, + }; + 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)); + } + else if (matchElement.localName == "infoURL") { + blockEntry.infoURL = matchElement.textContent; + } + } + // 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)); + + blockEntry.blockID = blocklistElement.getAttribute("blockID"); + + result.push(blockEntry); + }, + + /* See nsIBlocklistService */ + getPluginBlocklistState: function Blocklist_getPluginBlocklistState(plugin, + appVersion, toolkitVersion) { + if (!this._isBlocklistLoaded()) + 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 Blocklist_getPluginBlocklistState(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 (let blockEntryVersion of blockEntry.versions) { + if (blockEntryVersion.includesItem(plugin.version, appVersion, + toolkitVersion)) { + if (blockEntryVersion.severity >= gBlocklistLevel) + return Ci.nsIBlocklistService.STATE_BLOCKED; + if (blockEntryVersion.severity == SEVERITY_OUTDATED) { + let vulnerabilityStatus = blockEntryVersion.vulnerabilityStatus; + if (vulnerabilityStatus == VULNERABILITYSTATUS_UPDATE_AVAILABLE) + return Ci.nsIBlocklistService.STATE_VULNERABLE_UPDATE_AVAILABLE; + if (vulnerabilityStatus == VULNERABILITYSTATUS_NO_UPDATE) + return Ci.nsIBlocklistService.STATE_VULNERABLE_NO_UPDATE; + return Ci.nsIBlocklistService.STATE_OUTDATED; + } + return Ci.nsIBlocklistService.STATE_SOFTBLOCKED; + } + } + } + + return Ci.nsIBlocklistService.STATE_NOT_BLOCKED; + }, + + /** + * Get the matching blocklist entry for the passed plugin, if + * available. + * @param plugin The plugin to find the block entry for. + * @returns The block entry which matches the passed plugin, null + * otherwise. + */ + _getPluginBlockEntry: function (plugin) { + if (!gBlocklistEnabled) + return null; + + if (!this._isBlocklistLoaded()) + this._loadBlocklist(); + + for each (let blockEntry in this._pluginEntries) { + if (matchesAllPluginNames(blockEntry, plugin)) { + return blockEntry; + } + } + + return null; + }, + + /* See nsIBlocklistService */ + getPluginBlocklistURL: function Blocklist_getPluginBlocklistURL(plugin) { + let blockEntry = this._getPluginBlockEntry(plugin); + if (!blockEntry || !blockEntry.blockID) { + return null; + } + + return this._createBlocklistURL(blockEntry.blockID); + }, + + /* See nsIBlocklistService */ + getPluginInfoURL: function (plugin) { + let blockEntry = this._getPluginBlockEntry(plugin); + if (!blockEntry || !blockEntry.blockID) { + return null; + } + + return blockEntry.infoURL; + }, + + _blocklistUpdated: function Blocklist_blocklistUpdated(oldAddonEntries, oldPluginEntries) { + var addonList = []; + + // A helper function that reverts the prefs passed to default values. + function resetPrefs(prefs) { + for (let pref of prefs) + gPref.clearUserPref(pref); + } + var self = this; + const types = ["extension", "theme", "locale", "dictionary", "service"]; + AddonManager.getAddonsByTypes(types, function blocklistUpdated_getAddonsByTypes(addons) { + + for (let addon of addons) { + let oldState = Ci.nsIBlocklistService.STATE_NOTBLOCKED; + if (oldAddonEntries) + oldState = self._getAddonBlocklistState(addon, oldAddonEntries); + let state = self.getAddonBlocklistState(addon); + + LOG("Blocklist state for " + addon.id + " changed from " + + oldState + " to " + state); + + // We don't want to re-warn about add-ons + if (state == oldState) + continue; + + if (state === Ci.nsIBlocklistService.STATE_BLOCKED) { + // It's a hard block. We must reset certain preferences. + let prefs = self._getAddonPrefs(addon); + resetPrefs(prefs); + } + + // Ensure that softDisabled is false if the add-on is not soft blocked + if (state != Ci.nsIBlocklistService.STATE_SOFTBLOCKED) + addon.softDisabled = false; + + // Don't warn about add-ons becoming unblocked. + if (state == Ci.nsIBlocklistService.STATE_NOT_BLOCKED) + continue; + + // If an add-on has dropped from hard to soft blocked just mark it as + // soft disabled and don't warn about it. + if (state == Ci.nsIBlocklistService.STATE_SOFTBLOCKED && + oldState == Ci.nsIBlocklistService.STATE_BLOCKED) { + addon.softDisabled = true; + continue; + } + + // If the add-on is already disabled for some reason then don't warn + // about it + if (!addon.isActive) + continue; + + addonList.push({ + name: addon.name, + version: addon.version, + icon: addon.iconURL, + disable: false, + blocked: state == Ci.nsIBlocklistService.STATE_BLOCKED, + item: addon, + url: self.getAddonBlocklistURL(addon), + }); + } + + AddonManagerPrivate.updateAddonAppDisabledStates(); + + var phs = Cc["@mozilla.org/plugin/host;1"]. + getService(Ci.nsIPluginHost); + var plugins = phs.getPluginTags(); + + for (let plugin of plugins) { + let oldState = -1; + if (oldPluginEntries) + oldState = self._getPluginBlocklistState(plugin, oldPluginEntries); + let state = self.getPluginBlocklistState(plugin); + LOG("Blocklist state for " + plugin.name + " changed from " + + oldState + " to " + state); + // We don't want to re-warn about items + if (state == oldState) + continue; + + if (oldState == Ci.nsIBlocklistService.STATE_BLOCKED) { + if (state == Ci.nsIBlocklistService.STATE_SOFTBLOCKED) + plugin.enabledState = Ci.nsIPluginTag.STATE_DISABLED; + } + else if (!plugin.disabled && state != Ci.nsIBlocklistService.STATE_NOT_BLOCKED) { + if (state == Ci.nsIBlocklistService.STATE_OUTDATED) { + gPref.setBoolPref(PREF_PLUGINS_NOTIFYUSER, true); + } + else if (state != Ci.nsIBlocklistService.STATE_VULNERABLE_UPDATE_AVAILABLE && + state != Ci.nsIBlocklistService.STATE_VULNERABLE_NO_UPDATE) { + addonList.push({ + name: plugin.name, + version: plugin.version, + icon: "chrome://mozapps/skin/plugins/pluginGeneric.png", + disable: false, + blocked: state == Ci.nsIBlocklistService.STATE_BLOCKED, + item: plugin, + url: self.getPluginBlocklistURL(plugin), + }); + } + } + } + + if (addonList.length == 0) { + Services.obs.notifyObservers(self, "blocklist-updated", ""); + 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); + } + Services.obs.notifyObservers(self, "blocklist-updated", ""); + return; + } + + var args = { + restart: false, + list: addonList + }; + // This lets the dialog get the raw js object + args.wrappedJSObject = args; + + /* + Some tests run without UI, so the async code listens to a message + that can be sent programatically + */ + let applyBlocklistChanges = function blocklistUpdated_applyBlocklistChanges() { + for (let addon of addonList) { + if (!addon.disable) + continue; + + if (addon.item instanceof Ci.nsIPluginTag) + addon.item.enabledState = Ci.nsIPluginTag.STATE_DISABLED; + else { + // This add-on is softblocked. + addon.item.softDisabled = true; + // We must revert certain prefs. + let prefs = self._getAddonPrefs(addon.item); + resetPrefs(prefs); + } + } + + if (args.restart) + restartApp(); + + Services.obs.notifyObservers(self, "blocklist-updated", ""); + Services.obs.removeObserver(applyBlocklistChanges, "addon-blocklist-closed"); + } + + Services.obs.addObserver(applyBlocklistChanges, "addon-blocklist-closed", false); + + if (getPref("getBoolPref", PREF_BLOCKLIST_SUPPRESSUI, false)) { + applyBlocklistChanges(); + return; + } + + function blocklistUnloadHandler(event) { + if (event.target.location == URI_BLOCKLIST_DIALOG) { + applyBlocklistChanges(); + blocklistWindow.removeEventListener("unload", blocklistUnloadHandler); + } + } + + let blocklistWindow = Services.ww.openWindow(null, URI_BLOCKLIST_DIALOG, "", + "chrome,centerscreen,dialog,titlebar", args); + if (blocklistWindow) + blocklistWindow.addEventListener("unload", blocklistUnloadHandler, false); + }); + }, + + 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; + if (versionRangeElement && versionRangeElement.hasAttribute("vulnerabilitystatus")) { + this.vulnerabilityStatus = versionRangeElement.getAttribute("vulnerabilitystatus"); + } else { + this.vulnerabilityStatus = VULNERABILITYSTATUS_NONE; + } + 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 BlocklistItemData_includesItem(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 BlocklistItemData_matchesRange(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 BlocklistItemData_matchesTargetRange(appID, appVersion) { + var blTargetApp = this.targetApps[appID]; + if (!blTargetApp) + return false; + + for (let app of blTargetApp) { + if (this.matchesRange(appVersion, app.minVersion, app.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 BlocklistItemData_getBlocklistAppVersions(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 BlocklistItemData_getBlocklistVersionRange(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 }; + } +}; + +this.NSGetFactory = XPCOMUtils.generateNSGetFactory([Blocklist]); |