commit 2e301c0a5bbc62fd5f8e66ac973c71f0bc10c81b Author: Kathy Brade brade@pearlcrescent.com Date: Thu Jun 1 10:48:56 2017 -0400

Bug 22459: Adapt our use of the nsIContentPolicy to e10s mode

Load our content policy module as a process script instead of as a component so that our nsIContentPolicy filter runs in content processes.

Our http-on-examine-response code that blocks redirects to internal URLs must continue to run in the chrome process only. --- src/chrome.manifest | 4 ---- src/components/content-policy.js | 34 +++++++++++++++++++++++++++++----- src/components/startup-observer.js | 7 +++++++ 3 files changed, 36 insertions(+), 9 deletions(-)

diff --git a/src/chrome.manifest b/src/chrome.manifest index ed3f5cf..75bef4e 100644 --- a/src/chrome.manifest +++ b/src/chrome.manifest @@ -166,10 +166,6 @@ contract @torproject.org/domain-isolator;1 {e33fd6d4-270f-475f-a96f-ff3140279f68

category profile-after-change CookieJarSelector @torproject.org/cookie-jar-selector;1

-component {4c03be7d-492f-990e-f0da-f3689e564898} components/content-policy.js -contract @torproject.org/content-policy;1 {4c03be7d-492f-990e-f0da-f3689e564898} -category content-policy ContentPolicy @torproject.org/content-policy;1 - category profile-after-change StartupObserver @torproject.org/startup-observer;1 category profile-after-change DomainIsolator @torproject.org/domain-isolator;1 category profile-after-change ExtAppBlockerService @torproject.org/torbutton-extAppBlockerService;1 diff --git a/src/components/content-policy.js b/src/components/content-policy.js index 096827b..365a5e5 100644 --- a/src/components/content-policy.js +++ b/src/components/content-policy.js @@ -22,13 +22,22 @@ function ContentPolicy() { function (enabled) { that.uriFingerprinting = enabled; }); + + // Register as an nsIContentPolicy filter. + let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar); + registrar.registerFactory(this.classID, this.classDescription, + this.contractID, this); + + let catMan = Cc["@mozilla.org/categorymanager;1"] + .getService(Ci.nsICategoryManager); + catMan.addCategoryEntry("content-policy", this.contractID, this.contractID, + false, true); }

ContentPolicy.prototype = { classDescription: "ContentPolicy", classID: Components.ID("{4c03be7d-492f-990e-f0da-f3689e564898}"), contractID: "@torproject.org/content-policy;1", - QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPolicy]),

uriWhitelist: { // Video playback. @@ -51,6 +60,19 @@ ContentPolicy.prototype = { "chrome://global/skin/dirListing/dirListing.css": Ci.nsIContentPolicy.TYPE_STYLESHEET, },

+ // nsISupports + QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPolicy, Ci.nsIFactory, + Ci.nsISupportsWeakReference]), + + // nsIFactory + createInstance: function(outer, iid) + { + if (outer) + throw Cr.NS_ERROR_NO_AGGREGATION; + return this.QueryInterface(iid); + }, + + // nsIContentPolicy shouldLoad: function(aContentType, aContentLocation, aRequestOrigin, aContext, aMimeTypeGuess, aExtra) {

// Accept if the user does not care, no content URI is available or scheme @@ -121,8 +143,10 @@ var requestObserver = { }, };

-// Firefox >= 4.0 (Old versions are extremely irrelevant). -var NSGetFactory = XPCOMUtils.generateNSGetFactory([ContentPolicy]); +// Create a content policy object; initialization is done in the contructor. +var cp = new ContentPolicy();

-// Register the request observer to handle redirects. -requestObserver.start(); +// In the chrome process, register the request observer to handle redirects. +if (Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_DEFAULT) { + requestObserver.start(); +} diff --git a/src/components/startup-observer.js b/src/components/startup-observer.js index 6698b0b..65ca659 100644 --- a/src/components/startup-observer.js +++ b/src/components/startup-observer.js @@ -60,6 +60,13 @@ function StartupObserver() { } catch(e) { this.logger.log(4, "Early proxy change failed. Will try again at profile load. Error: "+e); } + + // Arrange for our nsIContentPolicy filter to be loaded in the + // default (chrome) process as well as in each content process. + let ppmm = Cc["@mozilla.org/parentprocessmessagemanager;1"] + .getService(Ci.nsIProcessScriptLoader); + ppmm.loadProcessScript("resource://torbutton/components/content-policy.js", + true); }

StartupObserver.prototype = {