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4d6a633bba
The -*- file variable lines -*- establish per-file settings that Emacs will pick up. This patch makes the following changes to those lines (and touches nothing else): - Never set the buffer's mode. Years ago, Emacs did not have a good JavaScript mode, so it made sense to use Java or C++ mode in .js files. However, Emacs has had js-mode for years now; it's perfectly serviceable, and is available and enabled by default in all major Emacs packagings. Selecting a mode in the -*- file variable line -*- is almost always the wrong thing to do anyway. It overrides Emacs's default choice, which is (now) reasonable; and even worse, it overrides settings the user might have made in their '.emacs' file for that file extension. It's only useful when there's something specific about that particular file that makes a particular mode appropriate. - Correctly propagate settings that establish the correct indentation level for this file: c-basic-offset and js2-basic-offset should be js-indent-level. Whatever value they're given should be preserved; different parts of our tree use different indentation styles. - We don't use tabs in Mozilla JS code. Always set indent-tabs-mode: nil. Remove tab-width: settings, at least in files that don't contain tab characters. - Remove js2-mode settings that belong in the user's .emacs file, like js2-skip-preprocessor-directives.
130 lines
4.3 KiB
JavaScript
130 lines
4.3 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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this.EXPORTED_SYMBOLS = ["RemoteAddonsParent"];
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const Ci = Components.interfaces;
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const Cc = Components.classes;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import('resource://gre/modules/Services.jsm');
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/**
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* This code listens for nsIContentPolicy hooks firing in child
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* processes. It then fires all hooks in the parent process and
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* returns the result to the child.
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*/
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let ContentPolicyParent = {
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/**
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* Some builtin policies will have already run in the child, and
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* there's no reason to run them in the parent. This is a list of
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* those policies. We assume that all child processes have the same
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* set of built-in policies.
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*/
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_policiesToIgnore: [],
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init: function() {
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let ppmm = Cc["@mozilla.org/parentprocessmessagemanager;1"]
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.getService(Ci.nsIMessageBroadcaster);
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ppmm.addMessageListener("Addons:ContentPolicy:IgnorePolicies", this);
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ppmm.addMessageListener("Addons:ContentPolicy:Run", this);
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Services.obs.addObserver(this, "xpcom-category-entry-added", true);
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Services.obs.addObserver(this, "xpcom-category-entry-removed", true);
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},
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observe: function(aSubject, aTopic, aData) {
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switch (aTopic) {
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case "xpcom-category-entry-added":
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case "xpcom-category-entry-removed":
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if (aData == "content-policy")
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this.updatePolicies();
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break;
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}
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},
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/**
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* There's no need for the child process to inform us about the
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* shouldLoad hook if we don't have any policies in the parent to
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* run. This code iterates over the parent's policies, looking for
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* ones that should not be ignored. Based on that, it tells the
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* children whether it needs to be informed about the shouldLoad
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* hook.
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*/
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updatePolicies: function() {
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let needHook = false;
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let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager)
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.enumerateCategory("content-policy");
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while (services.hasMoreElements()) {
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let item = services.getNext();
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let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString();
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if (this._policiesToIgnore.indexOf(name) == -1) {
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needHook = true;
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break;
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}
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}
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let ppmm = Cc["@mozilla.org/parentprocessmessagemanager;1"]
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.getService(Ci.nsIMessageBroadcaster);
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ppmm.broadcastAsyncMessage("Addons:ContentPolicy:NeedHook", { needed: needHook });
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},
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receiveMessage: function (aMessage) {
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switch (aMessage.name) {
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case "Addons:ContentPolicy:IgnorePolicies":
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this._policiesToIgnore = aMessage.data.policies;
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this.updatePolicies();
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break;
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case "Addons:ContentPolicy:Run":
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return this.shouldLoad(aMessage.data, aMessage.objects);
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break;
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}
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},
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shouldLoad: function(aData, aObjects) {
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let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager)
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.enumerateCategory("content-policy");
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while (services.hasMoreElements()) {
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let item = services.getNext();
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let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString();
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if (this._policiesToIgnore.indexOf(name) != -1)
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continue;
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let policy = Cc[name].getService(Ci.nsIContentPolicy);
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try {
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let result = policy.shouldLoad(aData.contentType,
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aObjects.contentLocation,
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aObjects.requestOrigin,
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aObjects.node,
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aData.mimeTypeGuess,
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null);
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if (result != Ci.nsIContentPolicy.ACCEPT && result != 0)
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return result;
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} catch (e) {}
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}
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return Ci.nsIContentPolicy.ACCEPT;
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},
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
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};
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let RemoteAddonsParent = {
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initialized: false,
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init: function() {
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if (this.initialized)
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return;
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this.initialized = true;
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ContentPolicyParent.init();
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},
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};
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