The Tor Browser / file comparison
comparison: toolkit/modules/RemoteAddonsParent.jsm
toolkit/modules/RemoteAddonsParent.jsm
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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deleted
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| -1:000000000000 | 0:cc07f67180b2 |
|---|---|
| 1 // -*- Mode: javascript; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 // This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 // License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 // file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 5 | |
| 6 this.EXPORTED_SYMBOLS = ["RemoteAddonsParent"]; | |
| 7 | |
| 8 const Ci = Components.interfaces; | |
| 9 const Cc = Components.classes; | |
| 10 const Cu = Components.utils; | |
| 11 | |
| 12 Cu.import("resource://gre/modules/XPCOMUtils.jsm"); | |
| 13 Cu.import('resource://gre/modules/Services.jsm'); | |
| 14 | |
| 15 /** | |
| 16 * This code listens for nsIContentPolicy hooks firing in child | |
| 17 * processes. It then fires all hooks in the parent process and | |
| 18 * returns the result to the child. | |
| 19 */ | |
| 20 let ContentPolicyParent = { | |
| 21 /** | |
| 22 * Some builtin policies will have already run in the child, and | |
| 23 * there's no reason to run them in the parent. This is a list of | |
| 24 * those policies. We assume that all child processes have the same | |
| 25 * set of built-in policies. | |
| 26 */ | |
| 27 _policiesToIgnore: [], | |
| 28 | |
| 29 init: function() { | |
| 30 let ppmm = Cc["@mozilla.org/parentprocessmessagemanager;1"] | |
| 31 .getService(Ci.nsIMessageBroadcaster); | |
| 32 ppmm.addMessageListener("Addons:ContentPolicy:IgnorePolicies", this); | |
| 33 ppmm.addMessageListener("Addons:ContentPolicy:Run", this); | |
| 34 | |
| 35 Services.obs.addObserver(this, "xpcom-category-entry-added", true); | |
| 36 Services.obs.addObserver(this, "xpcom-category-entry-removed", true); | |
| 37 }, | |
| 38 | |
| 39 observe: function(aSubject, aTopic, aData) { | |
| 40 switch (aTopic) { | |
| 41 case "xpcom-category-entry-added": | |
| 42 case "xpcom-category-entry-removed": | |
| 43 if (aData == "content-policy") | |
| 44 this.updatePolicies(); | |
| 45 break; | |
| 46 } | |
| 47 }, | |
| 48 | |
| 49 /** | |
| 50 * There's no need for the child process to inform us about the | |
| 51 * shouldLoad hook if we don't have any policies in the parent to | |
| 52 * run. This code iterates over the parent's policies, looking for | |
| 53 * ones that should not be ignored. Based on that, it tells the | |
| 54 * children whether it needs to be informed about the shouldLoad | |
| 55 * hook. | |
| 56 */ | |
| 57 updatePolicies: function() { | |
| 58 let needHook = false; | |
| 59 | |
| 60 let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager) | |
| 61 .enumerateCategory("content-policy"); | |
| 62 while (services.hasMoreElements()) { | |
| 63 let item = services.getNext(); | |
| 64 let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString(); | |
| 65 | |
| 66 if (this._policiesToIgnore.indexOf(name) == -1) { | |
| 67 needHook = true; | |
| 68 break; | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 let ppmm = Cc["@mozilla.org/parentprocessmessagemanager;1"] | |
| 73 .getService(Ci.nsIMessageBroadcaster); | |
| 74 ppmm.broadcastAsyncMessage("Addons:ContentPolicy:NeedHook", { needed: needHook }); | |
| 75 }, | |
| 76 | |
| 77 receiveMessage: function (aMessage) { | |
| 78 switch (aMessage.name) { | |
| 79 case "Addons:ContentPolicy:IgnorePolicies": | |
| 80 this._policiesToIgnore = aMessage.data.policies; | |
| 81 this.updatePolicies(); | |
| 82 break; | |
| 83 | |
| 84 case "Addons:ContentPolicy:Run": | |
| 85 return this.shouldLoad(aMessage.data, aMessage.objects); | |
| 86 break; | |
| 87 } | |
| 88 }, | |
| 89 | |
| 90 shouldLoad: function(aData, aObjects) { | |
| 91 let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager) | |
| 92 .enumerateCategory("content-policy"); | |
| 93 while (services.hasMoreElements()) { | |
| 94 let item = services.getNext(); | |
| 95 let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString(); | |
| 96 if (this._policiesToIgnore.indexOf(name) != -1) | |
| 97 continue; | |
| 98 | |
| 99 let policy = Cc[name].getService(Ci.nsIContentPolicy); | |
| 100 try { | |
| 101 let result = policy.shouldLoad(aData.contentType, | |
| 102 aObjects.contentLocation, | |
| 103 aObjects.requestOrigin, | |
| 104 aObjects.node, | |
| 105 aData.mimeTypeGuess, | |
| 106 null); | |
| 107 if (result != Ci.nsIContentPolicy.ACCEPT && result != 0) | |
| 108 return result; | |
| 109 } catch (e) {} | |
| 110 } | |
| 111 | |
| 112 return Ci.nsIContentPolicy.ACCEPT; | |
| 113 }, | |
| 114 | |
| 115 QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference]), | |
| 116 }; | |
| 117 | |
| 118 let RemoteAddonsParent = { | |
| 119 initialized: false, | |
| 120 | |
| 121 init: function() { | |
| 122 if (this.initialized) | |
| 123 return; | |
| 124 | |
| 125 this.initialized = true; | |
| 126 | |
| 127 ContentPolicyParent.init(); | |
| 128 }, | |
| 129 }; |
