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toolkit/modules/RemoteAddonsParent.jsm@6474c204b198 (annotated)

toolkit/modules/RemoteAddonsParent.jsm

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	// -*- Mode: javascript; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0	2	// This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	// License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	// file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0	5
michael@0	6	this.EXPORTED_SYMBOLS = ["RemoteAddonsParent"];
michael@0	7
michael@0	8	const Ci = Components.interfaces;
michael@0	9	const Cc = Components.classes;
michael@0	10	const Cu = Components.utils;
michael@0	11
michael@0	12	Cu.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0	13	Cu.import('resource://gre/modules/Services.jsm');
michael@0	14
michael@0	15	/**
michael@0	16	* This code listens for nsIContentPolicy hooks firing in child
michael@0	17	* processes. It then fires all hooks in the parent process and
michael@0	18	* returns the result to the child.
michael@0	19	*/
michael@0	20	let ContentPolicyParent = {
michael@0	21	/**
michael@0	22	* Some builtin policies will have already run in the child, and
michael@0	23	* there's no reason to run them in the parent. This is a list of
michael@0	24	* those policies. We assume that all child processes have the same
michael@0	25	* set of built-in policies.
michael@0	26	*/
michael@0	27	_policiesToIgnore: [],
michael@0	28
michael@0	29	init: function() {
michael@0	30	let ppmm = Cc["@mozilla.org/parentprocessmessagemanager;1"]
michael@0	31	.getService(Ci.nsIMessageBroadcaster);
michael@0	32	ppmm.addMessageListener("Addons:ContentPolicy:IgnorePolicies", this);
michael@0	33	ppmm.addMessageListener("Addons:ContentPolicy:Run", this);
michael@0	34
michael@0	35	Services.obs.addObserver(this, "xpcom-category-entry-added", true);
michael@0	36	Services.obs.addObserver(this, "xpcom-category-entry-removed", true);
michael@0	37	},
michael@0	38
michael@0	39	observe: function(aSubject, aTopic, aData) {
michael@0	40	switch (aTopic) {
michael@0	41	case "xpcom-category-entry-added":
michael@0	42	case "xpcom-category-entry-removed":
michael@0	43	if (aData == "content-policy")
michael@0	44	this.updatePolicies();
michael@0	45	break;
michael@0	46	}
michael@0	47	},
michael@0	48
michael@0	49	/**
michael@0	50	* There's no need for the child process to inform us about the
michael@0	51	* shouldLoad hook if we don't have any policies in the parent to
michael@0	52	* run. This code iterates over the parent's policies, looking for
michael@0	53	* ones that should not be ignored. Based on that, it tells the
michael@0	54	* children whether it needs to be informed about the shouldLoad
michael@0	55	* hook.
michael@0	56	*/
michael@0	57	updatePolicies: function() {
michael@0	58	let needHook = false;
michael@0	59
michael@0	60	let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager)
michael@0	61	.enumerateCategory("content-policy");
michael@0	62	while (services.hasMoreElements()) {
michael@0	63	let item = services.getNext();
michael@0	64	let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString();
michael@0	65
michael@0	66	if (this._policiesToIgnore.indexOf(name) == -1) {
michael@0	67	needHook = true;
michael@0	68	break;
michael@0	69	}
michael@0	70	}
michael@0	71
michael@0	72	let ppmm = Cc["@mozilla.org/parentprocessmessagemanager;1"]
michael@0	73	.getService(Ci.nsIMessageBroadcaster);
michael@0	74	ppmm.broadcastAsyncMessage("Addons:ContentPolicy:NeedHook", { needed: needHook });
michael@0	75	},
michael@0	76
michael@0	77	receiveMessage: function (aMessage) {
michael@0	78	switch (aMessage.name) {
michael@0	79	case "Addons:ContentPolicy:IgnorePolicies":
michael@0	80	this._policiesToIgnore = aMessage.data.policies;
michael@0	81	this.updatePolicies();
michael@0	82	break;
michael@0	83
michael@0	84	case "Addons:ContentPolicy:Run":
michael@0	85	return this.shouldLoad(aMessage.data, aMessage.objects);
michael@0	86	break;
michael@0	87	}
michael@0	88	},
michael@0	89
michael@0	90	shouldLoad: function(aData, aObjects) {
michael@0	91	let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager)
michael@0	92	.enumerateCategory("content-policy");
michael@0	93	while (services.hasMoreElements()) {
michael@0	94	let item = services.getNext();
michael@0	95	let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString();
michael@0	96	if (this._policiesToIgnore.indexOf(name) != -1)
michael@0	97	continue;
michael@0	98
michael@0	99	let policy = Cc[name].getService(Ci.nsIContentPolicy);
michael@0	100	try {
michael@0	101	let result = policy.shouldLoad(aData.contentType,
michael@0	102	aObjects.contentLocation,
michael@0	103	aObjects.requestOrigin,
michael@0	104	aObjects.node,
michael@0	105	aData.mimeTypeGuess,
michael@0	106	null);
michael@0	107	if (result != Ci.nsIContentPolicy.ACCEPT && result != 0)
michael@0	108	return result;
michael@0	109	} catch (e) {}
michael@0	110	}
michael@0	111
michael@0	112	return Ci.nsIContentPolicy.ACCEPT;
michael@0	113	},
michael@0	114
michael@0	115	QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
michael@0	116	};
michael@0	117
michael@0	118	let RemoteAddonsParent = {
michael@0	119	initialized: false,
michael@0	120
michael@0	121	init: function() {
michael@0	122	if (this.initialized)
michael@0	123	return;
michael@0	124
michael@0	125	this.initialized = true;
michael@0	126
michael@0	127	ContentPolicyParent.init();
michael@0	128	},
michael@0	129	};