mirror of
https://github.com/mozilla/gecko-dev.git
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631 lines
21 KiB
JavaScript
631 lines
21 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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const STRING_BUNDLE_URI = "chrome://browser/locale/feeds/subscribe.properties";
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export function WebProtocolHandlerRegistrar() {}
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const lazy = {};
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ChromeUtils.defineESModuleGetters(lazy, {
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NimbusFeatures: "resource://nimbus/ExperimentAPI.sys.mjs",
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PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
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});
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ChromeUtils.defineLazyGetter(lazy, "log", () => {
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let { ConsoleAPI } = ChromeUtils.importESModule(
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"resource://gre/modules/Console.sys.mjs"
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);
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let consoleOptions = {
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// tip: set maxLogLevel to "debug" and use lazy.log.debug() to create
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// detailed messages during development. See LOG_LEVELS in Console.sys.mjs
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// for details.
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maxLogLevel: "warning",
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maxLogLevelPref: "browser.protocolhandler.loglevel",
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prefix: "WebProtocolHandlerRegistrar.sys.mjs",
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};
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return new ConsoleAPI(consoleOptions);
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});
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WebProtocolHandlerRegistrar.prototype = {
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get stringBundle() {
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let sb = Services.strings.createBundle(STRING_BUNDLE_URI);
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delete WebProtocolHandlerRegistrar.prototype.stringBundle;
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return (WebProtocolHandlerRegistrar.prototype.stringBundle = sb);
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},
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_getFormattedString(key, params) {
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return this.stringBundle.formatStringFromName(key, params);
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},
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_getString(key) {
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return this.stringBundle.GetStringFromName(key);
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},
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/**
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* See nsIWebProtocolHandlerRegistrar
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*/
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removeProtocolHandler(aProtocol, aURITemplate) {
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let eps = Cc[
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"@mozilla.org/uriloader/external-protocol-service;1"
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].getService(Ci.nsIExternalProtocolService);
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let handlerInfo = eps.getProtocolHandlerInfo(aProtocol);
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let handlers = handlerInfo.possibleApplicationHandlers;
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for (let i = 0; i < handlers.length; i++) {
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try {
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// We only want to test web handlers
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let handler = handlers.queryElementAt(i, Ci.nsIWebHandlerApp);
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if (handler.uriTemplate == aURITemplate) {
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handlers.removeElementAt(i);
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let hs = Cc["@mozilla.org/uriloader/handler-service;1"].getService(
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Ci.nsIHandlerService
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);
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hs.store(handlerInfo);
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return;
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}
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} catch (e) {
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/* it wasn't a web handler */
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}
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}
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},
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/**
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* Determines if a web handler is already registered.
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*
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* @param {string} aProtocol
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* The scheme of the web handler we are checking for.
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* @param {string} aURITemplate
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* The URI template that the handler uses to handle the protocol.
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* @returns {boolean} true if it is already registered, false otherwise.
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*/
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_protocolHandlerRegistered(aProtocol, aURITemplate) {
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let eps = Cc[
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"@mozilla.org/uriloader/external-protocol-service;1"
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].getService(Ci.nsIExternalProtocolService);
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let handlerInfo = eps.getProtocolHandlerInfo(aProtocol);
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let handlers = handlerInfo.possibleApplicationHandlers;
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for (let i = 0; i < handlers.length; i++) {
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try {
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// We only want to test web handlers
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let handler = handlers.queryElementAt(i, Ci.nsIWebHandlerApp);
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if (handler.uriTemplate == aURITemplate) {
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return true;
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}
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} catch (e) {
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/* it wasn't a web handler */
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lazy.log.debug("no protocolhandler registered, because: " + e.message);
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}
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}
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return false;
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},
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/**
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* Private method to return the installHash, which is important for app
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* registration on OS level. Without it apps cannot be default/handler apps
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* under Windows. Because this value is used to check if its possible to reset
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* the default and to actually set it as well, this function puts the
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* acquisition of the installHash in one place in the hopes that check and set
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* conditions will never deviate.
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*
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* @returns {string} installHash
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*/
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_getInstallHash() {
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const xreDirProvider = Cc[
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"@mozilla.org/xre/directory-provider;1"
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].getService(Ci.nsIXREDirProvider);
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return xreDirProvider.getInstallHash();
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},
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/* Private method to check if we are already the default protocolhandler
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* for `protocol`.
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*
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* @param {string} protocol name, e.g. mailto (without ://)
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* @returns {boolean}
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*/
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_isOsDefault(protocol) {
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let shellService = Cc[
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"@mozilla.org/browser/shell-service;1"
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].createInstance(Ci.nsIWindowsShellService);
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if (shellService.isDefaultHandlerFor(protocol)) {
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lazy.log.debug("_isOsDefault returns true.");
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return true;
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}
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lazy.log.debug("_isOsDefault returns false.");
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return false;
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},
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/**
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* Private method to determine if we can set a new OS default for a certain
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* protocol.
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*
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* @param {string} protocol name, e.g. mailto (without ://)
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* @returns {boolean}
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*/
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_canSetOSDefault(protocol) {
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// an installHash is required for the association with a scheme handler,
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// also see _setOSDefault()
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if ("" == this._getInstallHash()) {
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lazy.log.debug("_canSetOSDefault returns false.");
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return false;
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}
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if (this._isOsDefault(protocol)) {
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return false;
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}
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return true;
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},
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/**
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* Private method to reset the OS default for a certain protocol/uri scheme.
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* We basically ignore, that setDefaultExtensionHandlersUserChoice can fail
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* when the installHash is wrong or cannot be determined.
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*
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* @param {string} protocol name, e.g. mailto (without ://)
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* @returns {boolean}
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*/
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_setOSDefault(protocol) {
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try {
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let defaultAgent = Cc["@mozilla.org/default-agent;1"].createInstance(
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Ci.nsIDefaultAgent
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);
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defaultAgent.setDefaultExtensionHandlersUserChoice(
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this._getInstallHash(),
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[protocol, "FirefoxURL"]
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);
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return true;
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} catch (e) {
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// TODO: why could not we just add the installHash and promote the running
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// install to be a properly installed one?
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lazy.log.debug(
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"Could not set Firefox as default application for " +
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protocol +
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", because: " +
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e.message
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);
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}
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return false;
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},
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/**
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* Private method, which returns true only if the OS default handler for
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* aProtocol is us and the configured mailto handler for us is aURI.spec.
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*
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* @param {string} aProtocol
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* @param {nsIURI} aURI
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* @returns {boolean}
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*/
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_isOsAndLocalDefault(aProtocol, aURI, aTitle) {
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let eps = Cc[
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"@mozilla.org/uriloader/external-protocol-service;1"
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].getService(Ci.nsIExternalProtocolService);
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let pah = eps.getProtocolHandlerInfo(aProtocol).preferredApplicationHandler;
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// that means that always ask is configure or at least no web handler, so
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// the answer if this is site/aURI.spec a local default is no/false.
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if (!pah) {
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return false;
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}
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let webHandlerApp = pah.QueryInterface(Ci.nsIWebHandlerApp);
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if (
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webHandlerApp.uriTemplate != aURI.spec ||
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webHandlerApp.name != aTitle
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) {
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return false;
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}
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// If the protocol handler is already registered
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if (!this._protocolHandlerRegistered(aProtocol, aURI.spec)) {
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return false;
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}
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return true;
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},
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/**
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* Private method to set the default uri to handle a certain protocol. This
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* automates in a way what a user can do in settings under applications,
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* where different 'actions' can be chosen for different 'content types'.
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*
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* @param {string} protocol
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* @param {handler} handler
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*/
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_setLocalDefault(protocol, handler) {
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let eps = Cc[
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"@mozilla.org/uriloader/external-protocol-service;1"
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].getService(Ci.nsIExternalProtocolService);
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let handlerInfo = eps.getProtocolHandlerInfo(protocol);
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handlerInfo.preferredAction = Ci.nsIHandlerInfo.useHelperApp; // this is IMPORTANT!
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handlerInfo.preferredApplicationHandler = handler;
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handlerInfo.alwaysAskBeforeHandling = false;
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let hs = Cc["@mozilla.org/uriloader/handler-service;1"].getService(
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Ci.nsIHandlerService
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);
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hs.store(handlerInfo);
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},
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/**
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* Private method to set the default uri to handle a certain protocol. This
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* automates in a way what a user can do in settings under applications,
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* where different 'actions' can be chosen for different 'content types'.
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*
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* @param {string} protocol - e.g. 'mailto', so again without ://
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* @param {string} name - the protocol associated 'Action'
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* @param {string} uri - the uri (compare 'use other...' in the preferences)
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* @returns {handler} handler - either the existing one or a newly created
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*/
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_addLocal(protocol, name, uri) {
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let eps = Cc[
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"@mozilla.org/uriloader/external-protocol-service;1"
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].getService(Ci.nsIExternalProtocolService);
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let phi = eps.getProtocolHandlerInfo(protocol);
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// not adding duplicates and bail out with the existing entry
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for (let h of phi.possibleApplicationHandlers.enumerate()) {
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if (h.uriTemplate == uri) {
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return h;
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}
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}
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let handler = Cc["@mozilla.org/uriloader/web-handler-app;1"].createInstance(
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Ci.nsIWebHandlerApp
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);
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handler.name = name;
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handler.uriTemplate = uri;
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let handlerInfo = eps.getProtocolHandlerInfo(protocol);
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handlerInfo.possibleApplicationHandlers.appendElement(handler);
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// Since the user has agreed to add a new handler, chances are good
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// that the next time they see a handler of this type, they're going
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// to want to use it. Reset the handlerInfo to ask before the next
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// use.
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handlerInfo.alwaysAskBeforeHandling = true;
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let hs = Cc["@mozilla.org/uriloader/handler-service;1"].getService(
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Ci.nsIHandlerService
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);
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hs.store(handlerInfo);
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return handler;
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},
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/*
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* Function to store a value associated to a domain using the content pref
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* service.
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*
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* @param {string} domain: the domain for this setting
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* @param {string} setting: the name of the setting
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* @param {string} value: the actual setting to be stored
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* @param {string} context (optional): private window or not
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* @returns {string} the stored preference (see: nsIContentPrefService2.idl)
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*/
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async _saveSiteSpecificSetting(domain, setting, value, context = null) {
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const gContentPrefs = Cc["@mozilla.org/content-pref/service;1"].getService(
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Ci.nsIContentPrefService2
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);
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return new Promise((resolve, reject) => {
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gContentPrefs.set(domain, setting, value, context, {
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handleResult(pref) {
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resolve(pref);
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},
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handleCompletion() {},
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handleError(err) {
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reject(err);
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},
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});
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});
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},
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/*
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* Function to return a stored value from the content pref service. Returns
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* a promise, so await can be used to synchonize the retrieval.
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*
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* @param {string} domain: the domain for this setting
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* @param {string} setting: the name of the setting
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* @param {string} context (optional): private window or not
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* @param {string} def (optional): the default value to return
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* @returns {string} either stored value or ""
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*/
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async _getSiteSpecificSetting(domain, setting, context = null, def = null) {
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const gContentPrefs = Cc["@mozilla.org/content-pref/service;1"].getService(
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Ci.nsIContentPrefService2
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);
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return await new Promise((resolve, reject) => {
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gContentPrefs.getByDomainAndName(domain, setting, context, {
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_result: def,
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handleResult(pref) {
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this._result = pref.value;
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},
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handleCompletion(_) {
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resolve(this._result);
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},
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handleError(err) {
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reject(err);
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},
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});
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});
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},
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/**
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* See nsIWebProtocolHandlerRegistrar
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*/
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registerProtocolHandler(
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aProtocol,
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aURI,
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aTitle,
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aDocumentURI,
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aBrowserOrWindow
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) {
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// first mitigation: check if the API call comes from another domain
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aProtocol = (aProtocol || "").toLowerCase();
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if (!aURI || !aDocumentURI) {
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return;
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}
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let browser = aBrowserOrWindow; // This is the e10s case.
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if (aBrowserOrWindow instanceof Ci.nsIDOMWindow) {
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// In the non-e10s case, grab the browser off the same-process window.
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let rootDocShell = aBrowserOrWindow.docShell.sameTypeRootTreeItem;
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browser = rootDocShell.QueryInterface(Ci.nsIDocShell).chromeEventHandler;
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}
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let browserWindow = browser.ownerGlobal;
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try {
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browserWindow.navigator.checkProtocolHandlerAllowed(
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aProtocol,
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aURI,
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aDocumentURI
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);
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} catch (ex) {
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// We should have already shown the user an error.
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return;
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}
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if (lazy.NimbusFeatures.mailto.getVariable("dualPrompt")) {
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if ("mailto" === aProtocol) {
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this._askUserToSetMailtoHandler(browser, aProtocol, aURI, aTitle);
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return;
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}
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}
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// If the protocol handler is already registered, just return early.
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if (this._protocolHandlerRegistered(aProtocol, aURI.spec)) {
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return;
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}
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// Now Ask the user and provide the proper callback
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let message = this._getFormattedString("addProtocolHandlerMessage", [
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aURI.host,
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aProtocol,
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]);
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let notificationIcon = aURI.prePath + "/favicon.ico";
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let notificationValue = "Protocol Registration: " + aProtocol;
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let addButton = {
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label: this._getString("addProtocolHandlerAddButton"),
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accessKey: this._getString("addProtocolHandlerAddButtonAccesskey"),
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protocolInfo: { protocol: aProtocol, uri: aURI.spec, name: aTitle },
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primary: true,
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callback(aNotification, aButtonInfo) {
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let protocol = aButtonInfo.protocolInfo.protocol;
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let name = aButtonInfo.protocolInfo.name;
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let handler = Cc[
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"@mozilla.org/uriloader/web-handler-app;1"
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].createInstance(Ci.nsIWebHandlerApp);
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handler.name = name;
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handler.uriTemplate = aButtonInfo.protocolInfo.uri;
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let eps = Cc[
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"@mozilla.org/uriloader/external-protocol-service;1"
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].getService(Ci.nsIExternalProtocolService);
|
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let handlerInfo = eps.getProtocolHandlerInfo(protocol);
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handlerInfo.possibleApplicationHandlers.appendElement(handler);
|
|
|
|
// Since the user has agreed to add a new handler, chances are good
|
|
// that the next time they see a handler of this type, they're going
|
|
// to want to use it. Reset the handlerInfo to ask before the next
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// use.
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handlerInfo.alwaysAskBeforeHandling = true;
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|
|
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let hs = Cc["@mozilla.org/uriloader/handler-service;1"].getService(
|
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Ci.nsIHandlerService
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);
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hs.store(handlerInfo);
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},
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};
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|
|
|
let notificationBox = browser.getTabBrowser().getNotificationBox(browser);
|
|
|
|
// check if the notification box is already shown
|
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if (notificationBox.getNotificationWithValue(notificationValue)) {
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return;
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}
|
|
|
|
notificationBox.appendNotification(
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notificationValue,
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{
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label: message,
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image: notificationIcon,
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priority: notificationBox.PRIORITY_INFO_LOW,
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},
|
|
[addButton]
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);
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},
|
|
|
|
/*
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|
* Special implementation for mailto: A prompt (notificationbox.js) is only
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* shown if there is a realistic chance that we can really set the OS default,
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* e.g. if we have been properly installed and the current page is not already
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* the default and we have not asked users too often the same question.
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*
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* @param {string} browser
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* @param {string} aProtocol
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* @param {nsIURI} aURI
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* @param {string} aTitle
|
|
*/
|
|
async _askUserToSetMailtoHandler(browser, aProtocol, aURI, aTitle) {
|
|
let currentHandler = this._addLocal(aProtocol, aTitle, aURI.spec);
|
|
let notificationId = "OS Protocol Registration: " + aProtocol;
|
|
|
|
// guard: if we have shown the bar before and it was dismissed: do not show
|
|
// it again. The pathHash is used to secure the URL by limiting this user
|
|
// input to a well-defined character set with a fixed length before it gets
|
|
// written to the underlaying sqlite database.
|
|
const gMailtoSiteSpecificDismiss = "protocolhandler.mailto.pathHash";
|
|
let pathHash = lazy.PlacesUtils.md5(aURI.spec, { format: "hex" });
|
|
let lastHash = await this._getSiteSpecificSetting(
|
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aURI.host,
|
|
gMailtoSiteSpecificDismiss
|
|
);
|
|
if (pathHash == lastHash) {
|
|
lazy.log.debug(
|
|
"prompt not shown, because a site with the pathHash " +
|
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pathHash +
|
|
" was dismissed before."
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|
);
|
|
return;
|
|
}
|
|
|
|
// guard: do not show the same bar twice on a single day after dismissed
|
|
// with 'X'
|
|
const gMailtoSiteSpecificXClick = "protocolhandler.mailto.xclickdate";
|
|
let lastShown = await this._getSiteSpecificSetting(
|
|
aURI.host,
|
|
gMailtoSiteSpecificXClick,
|
|
null,
|
|
0
|
|
);
|
|
let currentTS = new Date().getTime();
|
|
let timeRemaining = 24 * 60 * 60 * 1000 - (currentTS - lastShown);
|
|
if (0 < timeRemaining) {
|
|
lazy.log.debug(
|
|
"prompt will only be shown again in " + timeRemaining + " ms."
|
|
);
|
|
return;
|
|
}
|
|
|
|
// guard: bail out if already configured as default...
|
|
if (this._isOsAndLocalDefault(aProtocol, aURI, aTitle)) {
|
|
lazy.log.debug(
|
|
"prompt not shown, because " +
|
|
aTitle +
|
|
" is already configured" +
|
|
" to handle " +
|
|
aProtocol +
|
|
"-links under " +
|
|
aURI.spec +
|
|
" and we are already configured to be the OS default handler."
|
|
);
|
|
return;
|
|
}
|
|
|
|
let osDefaultNotificationBox = browser
|
|
.getTabBrowser()
|
|
.getNotificationBox(browser);
|
|
|
|
if (!osDefaultNotificationBox.getNotificationWithValue(notificationId)) {
|
|
let win = browser.ownerGlobal;
|
|
win.MozXULElement.insertFTLIfNeeded("branding/brand.ftl");
|
|
win.MozXULElement.insertFTLIfNeeded("browser/webProtocolHandler.ftl");
|
|
|
|
let notification = await osDefaultNotificationBox.appendNotification(
|
|
notificationId,
|
|
{
|
|
label: {
|
|
"l10n-id": "protocolhandler-mailto-handler-set-message",
|
|
"l10n-args": { url: aURI.host },
|
|
},
|
|
priority: osDefaultNotificationBox.PRIORITY_INFO_LOW,
|
|
eventCallback: eventType => {
|
|
// after a click on 'X' save todays date, so that we can show the
|
|
// bar again tomorrow...
|
|
if (eventType === "dismissed") {
|
|
this._saveSiteSpecificSetting(
|
|
aURI.host,
|
|
gMailtoSiteSpecificXClick,
|
|
new Date().getTime()
|
|
);
|
|
}
|
|
},
|
|
},
|
|
[
|
|
{
|
|
"l10n-id": "protocolhandler-mailto-os-handler-yes-button",
|
|
primary: true,
|
|
callback: newitem => {
|
|
this._setLocalDefault(aProtocol, currentHandler);
|
|
Glean.protocolhandlerMailto.promptClicked.set_local_default.add();
|
|
|
|
if (this._canSetOSDefault(aProtocol)) {
|
|
if (this._setOSDefault(aProtocol)) {
|
|
Glean.protocolhandlerMailto.promptClicked.set_os_default.add();
|
|
Services.telemetry.keyedScalarSet(
|
|
"os.environment.is_default_handler",
|
|
"mailto",
|
|
true
|
|
);
|
|
newitem.messageL10nId =
|
|
"protocolhandler-mailto-handler-confirm";
|
|
newitem.removeChild(newitem.buttonContainer);
|
|
newitem.setAttribute("type", "success"); // from moz-message-bar.css
|
|
newitem.eventCallback = null; // disable show only once per day for success
|
|
return true; // `true` does not hide the bar
|
|
}
|
|
|
|
// if anything goes wrong with setting the OS default, we want
|
|
// to be informed so that we can fix it.
|
|
Glean.protocolhandlerMailto.promptClicked.set_os_default_error.add();
|
|
Services.telemetry.keyedScalarSet(
|
|
"os.environment.is_default_handler",
|
|
"mailto",
|
|
false
|
|
);
|
|
return false;
|
|
}
|
|
|
|
// if the installation does not have an install hash, we cannot
|
|
// set the OS default, but mailto links from within the browser
|
|
// should still work.
|
|
Glean.protocolhandlerMailto.promptClicked.set_os_default_impossible.add();
|
|
return false;
|
|
},
|
|
},
|
|
{
|
|
"l10n-id": "protocolhandler-mailto-os-handler-no-button",
|
|
callback: () => {
|
|
this._saveSiteSpecificSetting(
|
|
aURI.host,
|
|
gMailtoSiteSpecificDismiss,
|
|
pathHash
|
|
);
|
|
return false;
|
|
},
|
|
},
|
|
]
|
|
);
|
|
|
|
// remove the icon from the infobar, which is automatically assigned
|
|
// after its priority, because the priority is also an indicator which
|
|
// type of bar it is, e.g. a warning or error:
|
|
notification.setAttribute("type", "system");
|
|
|
|
Glean.protocolhandlerMailto.handlerPromptShown.os_default.add();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* See nsISupports
|
|
*/
|
|
QueryInterface: ChromeUtils.generateQI(["nsIWebProtocolHandlerRegistrar"]),
|
|
};
|