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-rw-r--r--toolkit/mozapps/extensions/nsBlocklistServiceContent.js113
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diff --git a/toolkit/mozapps/extensions/nsBlocklistServiceContent.js b/toolkit/mozapps/extensions/nsBlocklistServiceContent.js
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+/* 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");
+
+const kMissingAPIMessage = "Unsupported blocklist call in the child process."
+
+/*
+ * A lightweight blocklist proxy for the content process that traps plugin
+ * related blocklist checks and forwards them to the parent. This interface is
+ * primarily designed to insure overlays work.. it does not control plugin
+ * or addon loading.
+ */
+
+function Blocklist() {
+ this.init();
+}
+
+Blocklist.prototype = {
+ classID: Components.ID("{e0a106ed-6ad4-47a4-b6af-2f1c8aa4712d}"),
+
+ QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
+ Ci.nsIBlocklistService]),
+
+ init: function() {
+ Services.cpmm.addMessageListener("Blocklist:blocklistInvalidated", this);
+ Services.obs.addObserver(this, "xpcom-shutdown", false);
+ },
+
+ uninit: function() {
+ Services.cpmm.removeMessageListener("Blocklist:blocklistInvalidated", this);
+ Services.obs.removeObserver(this, "xpcom-shutdown", false);
+ },
+
+ observe: function(aSubject, aTopic, aData) {
+ switch (aTopic) {
+ case "xpcom-shutdown":
+ this.uninit();
+ break;
+ }
+ },
+
+ // Message manager message handlers
+ receiveMessage: function(aMsg) {
+ switch (aMsg.name) {
+ case "Blocklist:blocklistInvalidated":
+ Services.obs.notifyObservers(null, "blocklist-updated", null);
+ Services.cpmm.sendAsyncMessage("Blocklist:content-blocklist-updated");
+ break;
+ default:
+ throw new Error("Unknown blocklist message received from content: " + aMsg.name);
+ }
+ },
+
+ /*
+ * A helper that queries key data from a plugin or addon object
+ * and generates a simple data wrapper suitable for ipc. We hand
+ * these directly to the nsBlockListService in the parent which
+ * doesn't query for much.. allowing us to get away with this.
+ */
+ flattenObject: function(aTag) {
+ // Based on debugging the nsBlocklistService, these are the props the
+ // parent side will check on our objects.
+ let props = ["name", "description", "filename", "version"];
+ let dataWrapper = {};
+ for (let prop of props) {
+ dataWrapper[prop] = aTag[prop];
+ }
+ return dataWrapper;
+ },
+
+ // We support the addon methods here for completeness, but content currently
+ // only calls getPluginBlocklistState.
+
+ isAddonBlocklisted: function(aAddon, aAppVersion, aToolkitVersion) {
+ return true;
+ },
+
+ getAddonBlocklistState: function(aAddon, aAppVersion, aToolkitVersion) {
+ return Components.interfaces.nsIBlocklistService.STATE_BLOCKED;
+ },
+
+ // There are a few callers in layout that rely on this.
+ getPluginBlocklistState: function(aPluginTag, aAppVersion, aToolkitVersion) {
+ return Services.cpmm.sendSyncMessage("Blocklist:getPluginBlocklistState", {
+ addonData: this.flattenObject(aPluginTag),
+ appVersion: aAppVersion,
+ toolkitVersion: aToolkitVersion
+ })[0];
+ },
+
+ getAddonBlocklistURL: function(aAddon, aAppVersion, aToolkitVersion) {
+ throw new Error(kMissingAPIMessage);
+ },
+
+ getPluginBlocklistURL: function(aPluginTag) {
+ throw new Error(kMissingAPIMessage);
+ },
+
+ getPluginInfoURL: function(aPluginTag) {
+ throw new Error(kMissingAPIMessage);
+ }
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([Blocklist]);