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Diffstat (limited to 'frameModule.js')
| -rw-r--r-- | frameModule.js | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/frameModule.js b/frameModule.js deleted file mode 100644 index ed07a8b..0000000 --- a/frameModule.js +++ /dev/null @@ -1,357 +0,0 @@ -/******************************************************************************* - - ηMatrix - a browser extension to black/white list requests. - Copyright (C) 2014-2019 The µBlock authors - Copyright (C) 2019 Alessio Vanni - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see {http://www.gnu.org/licenses/}. - - Home: https://libregit.org/heckyel/ematrix - uMatrix Home: https://github.com/gorhill/uMatrix -*/ - -/* global Components */ - -'use strict'; - -/******************************************************************************/ - -// https://github.com/gorhill/uBlock/issues/800#issuecomment-146580443 -this.EXPORTED_SYMBOLS = ['contentObserver', 'LocationChangeListener']; - -const {interfaces: Ci, utils: Cu} = Components; -const {Services} = Cu.import('resource://gre/modules/Services.jsm', null); -const {XPCOMUtils} = Cu.import('resource://gre/modules/XPCOMUtils.jsm', null); - -const hostName = Services.io.newURI(Components.stack.filename, null, null).host; - -// Cu.import('resource://gre/modules/Console.jsm'); - -/******************************************************************************/ - -const getMessageManager = function(win) { - let iface = win - .QueryInterface(Ci.nsIInterfaceRequestor) - .getInterface(Ci.nsIDocShell) - .sameTypeRootTreeItem - .QueryInterface(Ci.nsIDocShell) - .QueryInterface(Ci.nsIInterfaceRequestor); - - try { - return iface.getInterface(Ci.nsIContentFrameMessageManager); - } catch (ex) { - // This can throw. It appears `shouldLoad` can be called *after* a - // tab has been closed. For example, a case where this happens all - // the time (FF38): - // - Open twitter.com (assuming you have an account and are logged in) - // - Close twitter.com - // There will be an exception raised when `shouldLoad` is called - // to process a XMLHttpRequest with URL `https://twitter.com/i/jot` - // fired from `https://twitter.com/`, *after* the tab is closed. - // In such case, `win` is `about:blank`. - } - return null; -}; - -/******************************************************************************/ - -var contentObserver = { - classDescription: 'content-policy for ' + hostName, - classID: Components.ID('{c84283d4-9975-41b7-b1a4-f106af56b51d}'), - contractID: '@' + hostName + '/content-policy;1', - ACCEPT: Ci.nsIContentPolicy.ACCEPT, - MAIN_FRAME: Ci.nsIContentPolicy.TYPE_DOCUMENT, - contentBaseURI: 'chrome://' + hostName + '/content/js/', - cpMessageName: hostName + ':shouldLoad', - uniqueSandboxId: 1, - modernFirefox: - (Services.appinfo.ID === '{ec8030f7-c20a-464f-9b0e-13a3a9e97384}' - || Services.appinfo.ID === '{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}') - && Services.vc.compare(Services.appinfo.version, '44') > 0, - - get componentRegistrar() { - return Components.manager.QueryInterface(Ci.nsIComponentRegistrar); - }, - - get categoryManager() { - return Components.classes['@mozilla.org/categorymanager;1'] - .getService(Ci.nsICategoryManager); - }, - - QueryInterface: XPCOMUtils.generateQI([ - Ci.nsIFactory, - Ci.nsIObserver, - Ci.nsIContentPolicy, - Ci.nsISupportsWeakReference - ]), - - createInstance: function(outer, iid) { - if ( outer ) { - throw Components.results.NS_ERROR_NO_AGGREGATION; - } - - return this.QueryInterface(iid); - }, - - register: function() { - Services.obs.addObserver(this, 'document-element-inserted', true); - - if ( !this.modernFirefox ) { - this.componentRegistrar.registerFactory( - this.classID, - this.classDescription, - this.contractID, - this - ); - this.categoryManager.addCategoryEntry( - 'content-policy', - this.contractID, - this.contractID, - false, - true - ); - } - }, - - unregister: function() { - Services.obs.removeObserver(this, 'document-element-inserted'); - - if ( !this.modernFirefox ) { - this.componentRegistrar.unregisterFactory( - this.classID, - this - ); - this.categoryManager.deleteCategoryEntry( - 'content-policy', - this.contractID, - false - ); - } - }, - - // https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIContentPolicy - // https://bugzil.la/612921 - shouldLoad: function(type, location, origin, context) { - if ( Services === undefined || !context ) { - return this.ACCEPT; - } - - if ( !location.schemeIs('http') && !location.schemeIs('https') ) { - return this.ACCEPT; - } - - var contextWindow; - if ( type === this.MAIN_FRAME ) { - contextWindow = context.contentWindow || context; - } else if ( type === this.SUB_FRAME ) { - contextWindow = context.contentWindow; - } else { - contextWindow = (context.ownerDocument || context).defaultView; - } - - // https://github.com/gorhill/uMatrix/issues/706 - if ( !contextWindow ) { - return this.ACCEPT; - } - - // The context for the toolbar popup is an iframe element here, - // so check context.top instead of context - if ( !contextWindow.top || !contextWindow.location ) { - return this.ACCEPT; - } - - let messageManager = getMessageManager(contextWindow); - if ( messageManager === null ) { - return this.ACCEPT; - } - - let details = { - rawType: type, - url: location.asciiSpec - }; - - if ( typeof messageManager.sendRpcMessage === 'function' ) { - // https://bugzil.la/1092216 - messageManager.sendRpcMessage(this.cpMessageName, details); - } else { - // Compatibility for older versions - messageManager.sendSyncMessage(this.cpMessageName, details); - } - - return this.ACCEPT; - }, - - initContentScripts: function(win, sandbox) { - let messager = getMessageManager(win); - let sandboxId = hostName + ':sb:' + this.uniqueSandboxId++; - - if ( sandbox ) { - let sandboxName = [ - win.location.href.slice(0, 100), - win.document.title.slice(0, 100) - ].join(' | '); - - // https://github.com/gorhill/uMatrix/issues/325 - // "Pass sameZoneAs to sandbox constructor to make GCs cheaper" - sandbox = Cu.Sandbox([win], { - sameZoneAs: win.top, - sandboxName: sandboxId + '[' + sandboxName + ']', - sandboxPrototype: win, - wantComponents: false, - wantXHRConstructor: false - }); - - sandbox.injectScript = function(script) { - Services.scriptloader.loadSubScript(script, sandbox); - }; - } - else { - sandbox = win; - } - - sandbox._sandboxId_ = sandboxId; - sandbox.sendAsyncMessage = messager.sendAsyncMessage; - - sandbox.addMessageListener = function(callback) { - if ( sandbox._messageListener_ ) { - sandbox.removeMessageListener(); - } - - sandbox._messageListener_ = function(message) { - callback(message.data); - }; - - messager.addMessageListener( - sandbox._sandboxId_, - sandbox._messageListener_ - ); - messager.addMessageListener( - hostName + ':broadcast', - sandbox._messageListener_ - ); - }; - - sandbox.removeMessageListener = function() { - try { - messager.removeMessageListener( - sandbox._sandboxId_, - sandbox._messageListener_ - ); - messager.removeMessageListener( - hostName + ':broadcast', - sandbox._messageListener_ - ); - } catch (ex) { - // It throws sometimes, mostly when the popup closes - } - - sandbox._messageListener_ = null; - }; - - return sandbox; - }, - - observe: function(doc) { - let win = doc.defaultView; - if ( !win ) { - return; - } - - let loc = win.location; - if ( !loc ) { - return; - } - - // https://github.com/gorhill/uBlock/issues/260 - // TODO: We may have to skip more types, for now let's be - // conservative, i.e. let's not test against `text/html`. - if ( doc.contentType.lastIndexOf('image/', 0) === 0 ) { - return; - } - - if ( loc.protocol !== 'http:' && loc.protocol !== 'https:' && loc.protocol !== 'file:' ) { - if ( loc.protocol === 'chrome:' && loc.host === hostName ) { - this.initContentScripts(win); - } - - // What about data: and about:blank? - return; - } - - let lss = Services.scriptloader.loadSubScript; - let sandbox = this.initContentScripts(win, true); - - // Can throw with attempts at injecting into non-HTML document. - // Example: https://a.pomf.se/avonjf.webm - try { - lss(this.contentBaseURI + 'vapi-client.js', sandbox); - lss(this.contentBaseURI + 'contentscript-start.js', sandbox); - } catch (ex) { - return; // don't further try to inject anything - } - - let docReady = (e) => { - let doc = e.target; - doc.removeEventListener(e.type, docReady, true); - lss(this.contentBaseURI + 'contentscript.js', sandbox); - }; - - if ( doc.readyState === 'loading') { - doc.addEventListener('DOMContentLoaded', docReady, true); - } else { - docReady({ target: doc, type: 'DOMContentLoaded' }); - } - } -}; - -/******************************************************************************/ - -const locationChangedMessageName = hostName + ':locationChanged'; - -var LocationChangeListener = function(docShell) { - if ( !docShell ) { - return; - } - - var requestor = docShell.QueryInterface(Ci.nsIInterfaceRequestor); - var ds = requestor.getInterface(Ci.nsIWebProgress); - var mm = requestor.getInterface(Ci.nsIContentFrameMessageManager); - - if ( ds && mm && typeof mm.sendAsyncMessage === 'function' ) { - this.docShell = ds; - this.messageManager = mm; - ds.addProgressListener(this, Ci.nsIWebProgress.NOTIFY_LOCATION); - } -}; - -LocationChangeListener.prototype.QueryInterface = XPCOMUtils.generateQI([ - 'nsIWebProgressListener', - 'nsISupportsWeakReference' -]); - -LocationChangeListener.prototype.onLocationChange = function(webProgress, request, location, flags) { - if ( !webProgress.isTopLevel ) { - return; - } - this.messageManager.sendAsyncMessage(locationChangedMessageName, { - url: location.asciiSpec, - flags: flags, - }); -}; - -/******************************************************************************/ - -contentObserver.register(); - -/******************************************************************************/ |