mirror of
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318 lines
9.7 KiB
JavaScript
318 lines
9.7 KiB
JavaScript
/*
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is the Extension Manager.
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#
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# The Initial Developer of the Original Code is
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# the Mozilla Foundation.
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# Portions created by the Initial Developer are Copyright (C) 2010
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# Alon Zakai <azakai@mozilla.com>
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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*/
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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const MSG_INSTALL_ENABLED = "WebInstallerIsInstallEnabled";
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const MSG_INSTALL_ADDONS = "WebInstallerInstallAddonsFromWebpage";
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const MSG_INSTALL_CALLBACK = "WebInstallerInstallCallback";
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var gIoService = Components.classes["@mozilla.org/network/io-service;1"]
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.getService(Components.interfaces.nsIIOService);
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function InstallTrigger(installerId, window) {
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this.installerId = installerId;
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this.window = window;
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}
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InstallTrigger.prototype = {
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__exposedProps__: {
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SKIN: "r",
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LOCALE: "r",
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CONTENT: "r",
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PACKAGE: "r",
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enabled: "r",
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updateEnabled: "r",
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install: "r",
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installChrome: "r",
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startSoftwareUpdate: "r",
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toSource: "r", // XXX workaround for bug 582100
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},
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// == Public interface ==
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SKIN: Ci.amIInstallTrigger.SKIN,
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LOCALE: Ci.amIInstallTrigger.LOCALE,
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CONTENT: Ci.amIInstallTrigger.CONTENT,
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PACKAGE: Ci.amIInstallTrigger.PACKAGE,
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/**
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* @see amIInstallTriggerInstaller.idl
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*/
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enabled: function() {
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return sendSyncMessage(MSG_INSTALL_ENABLED, {
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mimetype: "application/x-xpinstall", referer: this.window.location.href
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})[0];
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},
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/**
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* @see amIInstallTriggerInstaller.idl
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*/
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updateEnabled: function() {
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return this.enabled();
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},
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/**
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* @see amIInstallTriggerInstaller.idl
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*/
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install: function(aArgs, aCallback) {
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var params = {
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installerId: this.installerId,
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mimetype: "application/x-xpinstall",
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referer: this.window.location.href,
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uris: [],
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hashes: [],
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names: [],
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icons: [],
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};
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for (var name in aArgs) {
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var item = aArgs[name];
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if (typeof item === 'string') {
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item = { URL: item };
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} else if (!("URL" in item)) {
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throw new Error("Missing URL property for '" + name + "'");
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}
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// Resolve and validate urls
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var url = this.resolveURL(item.URL);
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if (!this.checkLoadURIFromScript(url))
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throw new Error("insufficient permissions to install: " + url);
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var iconUrl = null;
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if ("IconURL" in item) {
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iconUrl = this.resolveURL(item.IconURL);
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if (!this.checkLoadURIFromScript(iconUrl)) {
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iconUrl = null; // If page can't load the icon, just ignore it
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}
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}
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params.uris.push(url.spec);
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params.hashes.push("Hash" in item ? item.Hash : null);
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params.names.push(name);
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params.icons.push(iconUrl ? iconUrl.spec : null);
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}
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// Add callback Id, done here, so only if we actually got here
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params.callbackId = this.addCallback(aCallback, params.uris);
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// Send message
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return sendSyncMessage(MSG_INSTALL_ADDONS, params)[0];
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},
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/**
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* @see amIInstallTriggerInstaller.idl
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*/
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startSoftwareUpdate: function(aUrl, aFlags) {
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var url = gIoService.newURI(aUrl, null, null)
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.QueryInterface(Ci.nsIURL).filename;
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var object = {};
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object[url] = { "URL": aUrl };
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return this.install(object);
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},
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/**
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* @see amIInstallTriggerInstaller.idl
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*/
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installChrome: function(aType, aUrl, aSkin) {
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return this.startSoftwareUpdate(aUrl);
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},
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// == Internal, hidden machinery ==
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callbacks: {},
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/**
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* Adds a callback to the list of callbacks we may receive messages
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* about from the parent process. We save them here; only callback IDs
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* are sent over IPC.
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*
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* @param callback
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* The callback function
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* @param urls
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* The urls this callback function will receive responses for.
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* After all the callbacks have arrived, we can forget about the
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* callback.
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*
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* @return The callback ID, an integer identifying this callback.
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*/
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addCallback: function(aCallback, aUrls) {
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if (!aCallback)
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return -1;
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var callbackId = 0;
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while (callbackId in this.callbacks)
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callbackId++;
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this.callbacks[callbackId] = {
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callback: aCallback,
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urls: aUrls.slice(0), // Clone the urls for our own use (it lets
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// us know when no further callbacks will
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// occur)
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};
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return callbackId;
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},
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/**
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* Resolves a URL in the context of our current window. We need to do
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* this before sending URLs to the parent process.
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*
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* @param aUrl
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* The url to resolve.
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*
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* @return A resolved, absolute nsURI object.
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*/
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resolveURL: function(aUrl) {
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return gIoService.newURI(aUrl, null,
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this.window.document.documentURIObject);
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},
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/**
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* @see amInstallTrigger.cpp
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* TODO: When e10s lands on m-c, consider removing amInstallTrigger.cpp
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* See bug 571166
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*/
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checkLoadURIFromScript: function(aUri) {
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var secman = Cc["@mozilla.org/scriptsecuritymanager;1"].
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getService(Ci.nsIScriptSecurityManager);
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var principal = this.window.content.document.nodePrincipal;
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try {
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secman.checkLoadURIWithPrincipal(principal, aUri,
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Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
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return true;
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}
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catch(e) {
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return false;
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}
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},
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};
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/**
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* Child part of InstallTrigger e10s handling.
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*
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* Sets up InstallTriggers on newly-created windows,
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* that will relay messages for InstallTrigger
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* activity. We also process the parameters for
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* the InstallTrigger to proper parameters for
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* amIWebInstaller.
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*/
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function InstallTriggerManager() {
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this.installerIds = [];
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this.nextInstallerId = 0;
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addMessageListener(MSG_INSTALL_CALLBACK, this);
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addEventListener("DOMWindowCreated", this, false);
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var self = this;
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addEventListener("unload", function() {
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// Clean up all references, to help gc work quickly
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for (var installerId in self.installerIds) {
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self.installerIds[installerId].callbacks = null;
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self.installerIds[installerId] = null;
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}
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self.installerIds = null;
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}, false);
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}
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InstallTriggerManager.prototype = {
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handleEvent: function handleEvent(aEvent) {
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var window = aEvent.originalTarget.defaultView.content;
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// Need to make sure we are called on what we care about -
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// content windows. DOMWindowCreated is called on *all* HTMLDocuments,
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// some of which belong to ChromeWindows or lack defaultView.content
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// altogether.
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//
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// Note about the syntax used here: |"wrappedJSObject" in window|
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// will silently fail, without even letting us catch it as an
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// exception, and checking in the way that we do check in some
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// cases still throws an exception; see bug 582108 about both.
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try {
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if (!window || !window.wrappedJSObject) {
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return;
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}
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}
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catch(e) {
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return;
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}
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// This event happens for each HTMLDocument, so it can happen more than
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// once per Window. We only need to work once per Window though.
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if (window.wrappedJSObject.InstallTrigger)
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return;
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// Create the public object which web scripts can see
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var installerId = this.nextInstallerId ++;
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var installTrigger = new InstallTrigger(installerId, window);
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this.installerIds[installerId] = installTrigger;
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window.wrappedJSObject.InstallTrigger = installTrigger;
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},
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/**
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* Receives a message about a callback. Performs the actual callback
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* (for the callback with the ID we are given). When
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* all URLs are exhausted, can free the callbackId and linked stuff.
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*
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* @param message
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* The IPC message. Contains IDs of the installer and the
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* callback.
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*
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*/
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receiveMessage: function(aMessage) {
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var payload = aMessage.json;
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var installer = this.installerIds[payload.installerId];
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var callbackId = payload.callbackId;
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var url = payload.url;
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var status = payload.status;
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var callbackObj = installer.callbacks[callbackId];
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if (!callbackObj)
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return;
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try {
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callbackObj.callback(url, status);
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}
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catch (e) {
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dump("InstallTrigger callback threw an exception: " + e + "\n");
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}
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callbackObj.urls.splice(callbackObj.urls.indexOf(url), 1);
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if (callbackObj.urls.length == 0)
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installer.callbacks[callbackId] = null;
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},
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};
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new InstallTriggerManager();
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