mirror of https://github.com/gorhill/uBlock.git
Firefox: new method for request handling
Now both nsIContentPolicy and on-http-* observers are used for net request monitoring. Reasons: - In many cases, nsIContentPolicy.shouldLoad is invoked twice for the same resource, because of the speculative parsing. - nsIContentPolicy.shouldLoad don't have information about the channel, so it can't redirect the request, nor change its headers, however on-http-opening-request can. Also, local mirroring and inline-script blocking has been implemented.
This commit is contained in:
Deathamns
parent
720794357c
commit
dbfacad8a6
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@ -19,7 +19,7 @@
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Home: https://github.com/gorhill/uBlock
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*/
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/* global Services, Components, XPCOMUtils */
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/* global Services, Components, XPCOMUtils, __URI__ */
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'use strict';
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@ -36,11 +36,15 @@ Cu['import']('resource://gre/modules/XPCOMUtils.jsm');
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/******************************************************************************/
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const getMessager = win =>
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win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDocShell)
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.sameTypeRootTreeItem.QueryInterface(Ci.nsIDocShell)
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const getMessageManager = function(context) {
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return context
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.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDocShell)
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.sameTypeRootTreeItem
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.QueryInterface(Ci.nsIDocShell)
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.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIContentFrameMessageManager);
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};
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/******************************************************************************/
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@ -49,8 +53,7 @@ const contentPolicy = {
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classID: Components.ID('{e6d173c8-8dbf-4189-a6fd-189e8acffd27}'),
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contractID: '@' + appName + '/content-policy;1',
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ACCEPT: Ci.nsIContentPolicy.ACCEPT,
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REJECT: Ci.nsIContentPolicy.REJECT_REQUEST,
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requestMessageName: appName + ':onBeforeRequest',
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messageName: appName + ':shouldLoad',
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get componentRegistrar() {
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return Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
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},
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@ -93,6 +96,7 @@ const contentPolicy = {
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false
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);
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},
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// https://bugzil.la/612921
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shouldLoad: function(type, location, origin, context) {
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if (!context || !/^https?$/.test(location.scheme)) {
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return this.ACCEPT;
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@ -102,23 +106,17 @@ const contentPolicy = {
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? context.contentWindow || context
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: (context.ownerDocument || context).defaultView;
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if (!win) {
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return this.ACCEPT;
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}
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let result = getMessager(win).sendSyncMessage(this.requestMessageName, {
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if (win) {
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getMessageManager(win).sendSyncMessage(this.messageName, {
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url: location.spec,
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type: type,
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tabId: -1, // determined in background script
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frameId: type === 6 ? -1 : (win === win.top ? 0 : 1),
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parentFrameId: win === win.top ? -1 : 0
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})[0];
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});
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}
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return result === true ? this.REJECT : this.ACCEPT;
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}/*,
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shouldProcess: function() {
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return this.ACCEPT;
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}*/
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}
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};
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/******************************************************************************/
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@ -126,7 +124,7 @@ const contentPolicy = {
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const docObserver = {
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contentBaseURI: 'chrome://' + appName + '/content/',
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initContext: function(win, sandbox) {
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let messager = getMessager(win);
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let messager = getMessageManager(win);
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if (sandbox) {
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win = Cu.Sandbox([win], {
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@ -23,20 +23,18 @@
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/******************************************************************************/
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// https://bugzil.la/673569
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(function(frameScriptContext) {
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'use strict';
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/******************************************************************************/
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let appName;
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let appName = Components.stack.filename.match(/:\/\/([^\/]+)/)[1];
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let listeners = {};
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try { throw new Error; } catch (ex) {
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appName = ex.fileName.match(/:\/\/([^\/]+)/)[1];
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}
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Components.utils['import']('chrome://' + appName + '/content/frameModule.js', {});
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Components.utils['import'](Components.stack.filename.replace('Script', 'Module'), {});
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/******************************************************************************/
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@ -321,6 +321,7 @@ vAPI.tabs.registerListeners = function() {
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// onClosed - handled in windowWatcher.onTabClose
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// onPopup ?
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for (var win of this.getWindows()) {
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windowWatcher.onReady.call(win);
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}
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@ -600,10 +601,21 @@ vAPI.setIcon = function(tabId, img, badge) {
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}
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var button = curWin.document.getElementById(vAPI.toolbarButton.widgetId);
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if (!button) {
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return;
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}
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/*if (!button.classList.contains('badged-button')) {
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button.classList.add('badged-button');
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}*/
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var icon = vAPI.tabIcons[tabId];
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button.setAttribute('badge', icon && icon.badge || '');
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icon = vAPI.getURL(icon && icon.img || 'img/browsericons/icon16-off.svg');
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button.style.listStyleImage = 'url(' + icon + ')';
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button.image = vAPI.getURL(
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button.image && icon && icon.img || 'img/browsericons/icon16-off.svg'
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);
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};
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/******************************************************************************/
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@ -623,11 +635,11 @@ vAPI.toolbarButton.init = function() {
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defaultArea: CustomizableUI.AREA_NAVBAR,
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label: vAPI.app.name,
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tooltiptext: vAPI.app.name,
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onViewShowing: function(e) {
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e.target.firstChild.setAttribute('src', vAPI.getURL('popup.html'));
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onViewShowing: function({target}) {
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target.firstChild.setAttribute('src', vAPI.getURL('popup.html'));
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},
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onViewHiding: function(e) {
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e.target.firstChild.setAttribute('src', 'about:blank');
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onViewHiding: function({target}) {
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target.firstChild.setAttribute('src', 'about:blank');
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}
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});
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@ -645,11 +657,9 @@ vAPI.toolbarButton.register = function(doc) {
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var panel = doc.createElement('panelview');
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panel.setAttribute('id', this.panelId);
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var iframe = panel.appendChild(doc.createElement('iframe'));
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var iframe = doc.createElement('iframe');
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iframe.setAttribute('type', 'content');
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panel.style.overflow = iframe.style.overflow = 'hidden';
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doc.getElementById('PanelUI-multiView')
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.appendChild(panel)
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.appendChild(iframe);
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@ -672,14 +682,13 @@ vAPI.toolbarButton.register = function(doc) {
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};
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var onPopupReady = function() {
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if (!this.contentWindow
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|| this.contentWindow.location.host !== location.host) {
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var win = this.contentWindow;
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if (!win || win.location.host !== location.host) {
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return;
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}
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var mutObs = this.contentWindow.MutationObserver;
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(new mutObs(delayedResize)).observe(this.contentDocument, {
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new win.MutationObserver(delayedResize).observe(win.document, {
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childList: true,
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attributes: true,
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characterData: true,
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@ -712,7 +721,7 @@ vAPI.toolbarButton.register = function(doc) {
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'#' + this.panelId + ', #' + this.panelId + ' > iframe {',
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'width: 180px;',
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'height: 310px;',
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'transition: width .1s, height .1s;',
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'overflow: hidden !important;',
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'}'
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].join(''));
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@ -860,14 +869,127 @@ vAPI.messaging.broadcast = function(message) {
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/******************************************************************************/
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vAPI.net = {
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beforeRequestMessageName: location.host + ':onBeforeRequest'
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vAPI.net = {};
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/******************************************************************************/
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var httpObserver = {
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ABORT: Components.results.NS_BINDING_ABORTED,
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lastRequest: {
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url: null,
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type: null,
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tabId: null,
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frameId: null,
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parentFrameId: null
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},
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observe: function(httpChannel, topic) {
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if (!(httpChannel instanceof Ci.nsIHttpChannel)) {
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return;
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}
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httpChannel = httpChannel.QueryInterface(Ci.nsIHttpChannel);
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var URI = httpChannel.URI, tabId, result;
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// the first distinct character
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topic = topic.charAt(8);
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// http-on-modify-request
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if (topic === 'm') {
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// var onHeadersReceived = vAPI.net.onHeadersReceived;
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return;
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}
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// http-on-examine-request
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if (topic === 'e') {
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try {
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tabId = httpChannel.getProperty('tabId');
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} catch (ex) {
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return;
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}
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if (!tabId) {
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return;
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}
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var header = 'Content-Security-Policy';
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try {
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result = httpChannel.getResponseHeader(header);
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} catch (ex) {
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result = null;
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}
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result = vAPI.net.onHeadersReceived.callback({
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url: URI.spec,
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tabId: tabId,
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parentFrameId: -1,
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responseHeaders: result ? [{name: header, value: result}] : []
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});
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if (result) {
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httpChannel.setResponseHeader(
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header,
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result.responseHeaders[0].value,
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true
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);
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}
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return;
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}
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// http-on-opening-request
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var lastRequest = this.lastRequest;
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if (!lastRequest.url || lastRequest.url !== URI.spec) {
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lastRequest.url = null;
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return;
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}
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// Important! When loading file via XHR for mirroring,
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// the URL will be the same, so it could fall into an infinite loop
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lastRequest.url = null;
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if (lastRequest.type === 'main_frame'
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&& httpChannel instanceof Ci.nsIWritablePropertyBag) {
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httpChannel.setProperty('tabId', lastRequest.tabId);
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}
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var onBeforeRequest = vAPI.net.onBeforeRequest;
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if (!onBeforeRequest.types.has(lastRequest.type)) {
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return;
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}
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result = onBeforeRequest.callback({
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url: URI.spec,
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type: lastRequest.type,
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tabId: lastRequest.tabId,
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frameId: lastRequest.frameId,
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parentFrameId: lastRequest.parentFrameId
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});
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if (!result || typeof result !== 'object') {
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return;
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}
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if (result.cancel === true) {
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httpChannel.cancel(this.ABORT);
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}
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else if (result.redirectUrl) {
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httpChannel.redirectionLimit = 1;
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httpChannel.redirectTo(
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Services.io.newURI(result.redirectUrl, null, null)
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);
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}
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}
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};
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/******************************************************************************/
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vAPI.net.registerListeners = function() {
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var types = {
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var typeMap = {
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2: 'script',
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3: 'image',
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4: 'stylesheet',
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@ -877,42 +999,36 @@ vAPI.net.registerListeners = function() {
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11: 'xmlhttprequest'
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};
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var onBeforeRequest = this.onBeforeRequest;
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this.onBeforeRequest.types = new Set(this.onBeforeRequest.types);
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this.onBeforeRequest = function(e) {
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var details = e.data;
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details.type = types[details.type] || 'other';
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details.tabId = vAPI.tabs.getTabId(e.target);
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if (onBeforeRequest.types.indexOf(details.type) === -1) {
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return false;
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}
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var block = onBeforeRequest.callback(details);
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if (block && typeof block === 'object') {
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if (block.cancel === true) {
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return true;
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}
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else if (block.redirectURL) {
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return block.redirectURL;
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}
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}
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return false;
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var shouldLoadListenerMessageName = location.host + ':shouldLoad';
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var shouldLoadListener = function(e) {
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var lastRequest = httpObserver.lastRequest;
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lastRequest.url = e.data.url;
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lastRequest.type = typeMap[e.data.type] || 'other';
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lastRequest.tabId = vAPI.tabs.getTabId(e.target);
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lastRequest.frameId = e.data.frameId;
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lastRequest.parentFrameId = e.data.parentFrameId;
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};
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vAPI.messaging.globalMessageManager.addMessageListener(
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this.beforeRequestMessageName,
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this.onBeforeRequest
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shouldLoadListenerMessageName,
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shouldLoadListener
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);
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Services.obs.addObserver(httpObserver, 'http-on-opening-request', false);
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// Services.obs.addObserver(httpObserver, 'http-on-modify-request', false);
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Services.obs.addObserver(httpObserver, 'http-on-examine-response', false);
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vAPI.unload.push(function() {
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vAPI.messaging.globalMessageManager.removeMessageListener(
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vAPI.net.beforeRequestMessageName,
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vAPI.net.onBeforeRequest
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shouldLoadListenerMessageName,
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shouldLoadListener
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);
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Services.obs.removeObserver(httpObserver, 'http-on-opening-request');
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// Services.obs.removeObserver(httpObserver, 'http-on-modify-request');
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Services.obs.removeObserver(httpObserver, 'http-on-examine-response');
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});
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};
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@ -95,10 +95,10 @@ vAPI.messaging = {
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this.channels['vAPI'] = {};
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this.channels['vAPI'].listener = function(msg) {
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if (msg.cmd === 'injectScript') {
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if ( msg.cmd === 'injectScript' ) {
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var details = msg.details;
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if (!details.allFrames && window !== window.top) {
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if ( !details.allFrames && window !== window.top ) {
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return;
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}
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@ -108,12 +108,14 @@ vAPI.messaging = {
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},
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close: function() {
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if (this.connector) {
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if ( !this.connector ) {
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return;
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}
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removeMessageListener(this.connectorId, this.connector);
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this.connector = null;
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this.channels = {};
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this.listeners = {};
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}
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},
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channel: function(channelName, callback) {
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