mirror of
https://github.com/gorhill/uBlock.git
synced 2024-11-07 03:12:33 +01:00
this fixes #618
This commit is contained in:
gorhill
parent
8d61a04b3e
commit
923019794d
@ -83,6 +83,169 @@ var messager = vAPI.messaging.channel('contentscript-end.js');
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}
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})();
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/******************************************************************************/
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/******************************************************************************/
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// https://github.com/gorhill/uBlock/issues/7
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var uBlockCollapser = (function() {
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var timer = null;
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var requestId = 1;
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var newRequests = [];
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var pendingRequests = {};
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var pendingRequestCount = 0;
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var srcProps = {
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'embed': 'src',
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'iframe': 'src',
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'img': 'src',
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'object': 'data'
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};
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var PendingRequest = function(target, tagName, attr) {
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this.id = requestId++;
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this.target = target;
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this.tagName = tagName;
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this.attr = attr;
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pendingRequests[this.id] = this;
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pendingRequestCount += 1;
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};
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// Because a while ago I have observed constructors are faster than
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// literal object instanciations.
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var BouncingRequest = function(id, tagName, url) {
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this.id = id;
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this.tagName = tagName;
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this.url = url;
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this.collapse = false;
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};
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var onProcessed = function(requests) {
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if ( requests === null || Array.isArray(requests) === false ) {
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return;
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}
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var selectors = [];
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var i = requests.length;
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var request, entry, target, value;
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while ( i-- ) {
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request = requests[i];
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if ( pendingRequests.hasOwnProperty(request.id) === false ) {
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continue;
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}
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entry = pendingRequests[request.id];
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delete pendingRequests[request.id];
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pendingRequestCount -= 1;
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// https://github.com/gorhill/uBlock/issues/869
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if ( !request.collapse ) {
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continue;
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}
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target = entry.target;
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// https://github.com/gorhill/uBlock/issues/399
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// Never remove elements from the DOM, just hide them
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target.style.setProperty('display', 'none', 'important');
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// https://github.com/gorhill/uBlock/issues/1048
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// Use attribute to construct CSS rule
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if ( value = target.getAttribute(entry.attr) ) {
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selectors.push(entry.tagName + '[' + entry.attr + '="' + value + '"]');
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}
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}
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if ( selectors.length !== 0 ) {
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messager.send({
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what: 'injectedSelectors',
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type: 'net',
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hostname: window.location.hostname,
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selectors: selectors
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});
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}
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// Renew map: I believe that even if all properties are deleted, an
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// object will still use more memory than a brand new one.
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if ( pendingRequestCount === 0 ) {
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pendingRequests = {};
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}
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};
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var send = function() {
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timer = null;
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messager.send({
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what: 'filterRequests',
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pageURL: window.location.href,
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pageHostname: window.location.hostname,
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requests: newRequests
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}, onProcessed);
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newRequests = [];
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};
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var process = function(delay) {
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if ( newRequests.length === 0 ) {
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return;
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}
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if ( delay === 0 ) {
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clearTimeout(timer);
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send();
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} else if ( timer === null ) {
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timer = setTimeout(send, delay || 20);
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}
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};
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// If needed eventually, we could listen to `src` attribute changes
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// for iframes.
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var add = function(target) {
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var tagName = target.localName;
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var prop = srcProps[tagName];
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if ( prop === undefined ) {
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return;
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}
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// https://github.com/gorhill/uBlock/issues/174
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// Do not remove fragment from src URL
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var src = target[prop];
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if ( typeof src !== 'string' || src === '' ) {
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return;
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}
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if ( src.lastIndexOf('http', 0) !== 0 ) {
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return;
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}
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var req = new PendingRequest(target, tagName, prop);
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newRequests.push(new BouncingRequest(req.id, tagName, src));
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};
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var addIFrame = function(iframe) {
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var src = iframe.src;
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// TODO: niject content script in `about:blank` as well.
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if ( src === '' || typeof src !== 'string' ) {
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return;
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}
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if ( src.lastIndexOf('http', 0) !== 0 ) {
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return;
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}
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var req = new PendingRequest(iframe, 'iframe', 'src');
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newRequests.push(new BouncingRequest(req.id, 'iframe', src));
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};
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var iframesFromNode = function(node) {
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if ( node.localName === 'iframe' ) {
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add(node);
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}
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var iframes = node.querySelectorAll('iframe');
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var i = iframes.length;
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while ( i-- ) {
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addIFrame(iframes[i]);
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}
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process();
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};
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return {
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add: add,
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addIFrame: addIFrame,
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iframesFromNode: iframesFromNode,
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process: process
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};
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})();
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/******************************************************************************/
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/******************************************************************************/
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// Cosmetic filters
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@ -298,7 +461,7 @@ var messager = vAPI.messaging.channel('contentscript-end.js');
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}
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}
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// Candidate 2 = specific form
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selector = node.tagName.toLowerCase() + selector;
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selector = node.localName + selector;
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if ( generics.hasOwnProperty(selector) ) {
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if ( injectedSelectors.hasOwnProperty(selector) === false ) {
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injectedSelectors[selector] = true;
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@ -461,20 +624,22 @@ var messager = vAPI.messaging.channel('contentscript-end.js');
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return;
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}
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// https://github.com/gorhill/uBlock/issues/618
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// Following is to observe dynamically added iframes:
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// - On Firefox, the iframes fails to fire a `load` event
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var ignoreTags = {
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'link': true,
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'LINK': true,
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'script': true,
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'SCRIPT': true,
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'style': true,
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'STYLE': true
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'style': true
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};
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// Added node lists will be cumulated here before being processed
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var addedNodeLists = [];
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var addedNodeListsTimer = null;
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var collapser = uBlockCollapser;
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var mutationObservedHandler = function() {
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var treeMutationObservedHandler = function() {
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var nodeList, iNode, node;
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while ( nodeList = addedNodeLists.pop() ) {
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iNode = nodeList.length;
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@ -483,10 +648,11 @@ var messager = vAPI.messaging.channel('contentscript-end.js');
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if ( node.nodeType !== 1 ) {
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continue;
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}
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if ( ignoreTags.hasOwnProperty(node.tagName) ) {
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if ( ignoreTags.hasOwnProperty(node.localName) ) {
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continue;
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}
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contextNodes.push(node);
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collapser.iframesFromNode(node);
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}
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}
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addedNodeListsTimer = null;
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@ -512,7 +678,7 @@ var messager = vAPI.messaging.channel('contentscript-end.js');
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// I arbitrarily chose 100 ms for now:
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// I have to compromise between the overhead of processing too few
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// nodes too often and the delay of many nodes less often.
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addedNodeListsTimer = setTimeout(mutationObservedHandler, 100);
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addedNodeListsTimer = setTimeout(treeMutationObservedHandler, 100);
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}
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};
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@ -529,134 +695,17 @@ var messager = vAPI.messaging.channel('contentscript-end.js');
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// Permanent
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(function() {
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// https://github.com/gorhill/uBlock/issues/683
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// Instead of a closure we use a map to remember the element to collapse
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var filterRequestId = 1;
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var filterRequests = {};
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// Listener to collapse blocked resources.
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// - Future requests not blocked yet
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// - Elements dynamically added to the page
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// - Elements which resource URL changes
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var FilterRequest = function(target, tagName, attr) {
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this.id = filterRequestId++;
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this.target = target;
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this.tagName = tagName;
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this.attr = attr;
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};
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FilterRequest.send = function(target, tagName, prop, src) {
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var req = new FilterRequest(target, tagName, prop);
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filterRequests[req.id] = req;
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messager.send(
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{
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what: 'filterRequest',
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id: req.id,
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tagName: tagName,
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requestURL: src,
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pageHostname: window.location.hostname,
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pageURL: window.location.href
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},
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onAnswerReceived
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);
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};
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// Process answer: collapse, or do nothing.
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var onAnswerReceived = function(details) {
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// This should not happen under normal circumstances. It probably can
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// happen if the extension is disabled though.
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if ( typeof details !== 'object' || details === null ) {
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return;
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}
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// This should definitely not happen
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if ( filterRequests.hasOwnProperty(details.id) === false ) {
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return;
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}
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var req = filterRequests[details.id];
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delete filterRequests[details.id];
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// https://github.com/gorhill/uBlock/issues/869
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if ( details.collapse !== true ) {
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return;
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}
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//console.log('contentscript-end.js > onAnswerReceived(%o)', req);
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// If `!important` is not there, going back using history will
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// likely cause the hidden element to re-appear.
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// https://github.com/gorhill/uBlock/issues/399
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// Never remove elements from the DOM, just hide them
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req.target.style.setProperty('display', 'none', 'important');
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// https://github.com/gorhill/uBlock/issues/1048
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// We need to use the atrtibute value for the CSS rule
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var value = req.target.getAttribute(req.attr);
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if ( !value ) {
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return;
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}
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messager.send({
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what: 'injectedSelectors',
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type: 'net',
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hostname: window.location.hostname,
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selectors: req.tagName + '[' + req.attr + '="' + value + '"]'
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});
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};
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// https://github.com/gorhill/uBlock/issues/174
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// Do not remove fragment from src URL
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// TODO: Find out whether trying to send more than one filter request per
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// message is worth it.
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var onResource = function(target, dict) {
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if ( !target ) {
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return;
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}
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var tagName = target.tagName.toLowerCase();
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var prop = dict[tagName];
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if ( prop === undefined ) {
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return;
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}
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var src = target[prop];
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if ( typeof src !== 'string' || src === '' ) {
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return;
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}
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if ( src.lastIndexOf('http', 0) !== 0 ) {
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return;
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}
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FilterRequest.send(target, tagName, prop, src);
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};
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// Listeners to mop up whatever is otherwise missed:
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// - Future requests not blocked yet
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// - Elements dynamically added to the page
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// - Elements which resource URL changes
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var loadedElements = {
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'iframe': 'src'
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};
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var failedElements = {
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'img': 'src',
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'input': 'src',
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'object': 'data'
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};
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var onResourceLoaded = function(ev) {
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//console.debug('onResourceLoaded(%o)', ev);
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onResource(ev.target, loadedElements);
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};
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var onResourceFailed = function(ev) {
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//console.debug('onResourceFailed(%o)', ev);
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onResource(ev.target, failedElements);
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};
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document.addEventListener('load', onResourceLoaded, true);
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document.addEventListener('error', onResourceFailed, true);
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})();
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var onResourceFailed = function(ev) {
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//console.debug('onResourceFailed(%o)', ev);
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uBlockCollapser.add(ev.target);
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uBlockCollapser.process();
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};
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document.addEventListener('error', onResourceFailed, true);
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/******************************************************************************/
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/******************************************************************************/
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@ -666,88 +715,30 @@ var messager = vAPI.messaging.channel('contentscript-end.js');
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// Executed only once
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(function() {
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var srcProps = {
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'embed': 'src',
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'iframe': 'src',
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'img': 'src',
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'object': 'data'
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};
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var elements = [];
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var collapser = uBlockCollapser;
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var elems, i, elem;
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var onAnswerReceived = function(details) {
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if ( typeof details !== 'object' || details === null ) {
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return;
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}
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var collapse = details.collapse;
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elems = document.querySelectorAll('embed, object');
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i = elems.length;
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while ( i-- ) {
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collapser.add(elems[i]);
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}
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// https://github.com/gorhill/uBlock/issues/869
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if ( collapse !== true ) {
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return;
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}
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var requests = details.requests;
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var selectors = [];
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var i = requests.length;
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var request, elem, attr, value;
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while ( i-- ) {
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request = requests[i];
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elem = elements[request.index];
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// https://github.com/gorhill/uBlock/issues/399
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// Never remove elements from the DOM, just hide them
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elem.style.setProperty('display', 'none', 'important');
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// https://github.com/gorhill/uBlock/issues/1048
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// Use attribute to construct CSS rule
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attr = srcProps[request.tagName];
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if ( value = elem.getAttribute(attr) ) {
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selectors.push(request.tagName + '[' + attr + '="' + value + '"]');
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}
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}
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if ( selectors.length !== 0 ) {
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messager.send({
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what: 'injectedSelectors',
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type: 'net',
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hostname: window.location.hostname,
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selectors: selectors
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});
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}
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};
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var requests = [];
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var tagNames = ['embed','iframe','img','object'];
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var elementIndex = 0;
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var tagName, elems, i, elem, prop, src;
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while ( tagName = tagNames.pop() ) {
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elems = document.getElementsByTagName(tagName);
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i = elems.length;
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while ( i-- ) {
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elem = elems[i];
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prop = srcProps[tagName];
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if ( prop === undefined ) {
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continue;
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}
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src = elem[prop];
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if ( typeof src !== 'string' || src === '' ) {
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continue;
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}
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if ( src.lastIndexOf('http', 0) !== 0 ) {
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continue;
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}
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requests.push({
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index: elementIndex,
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tagName: tagName,
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url: src
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});
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elements[elementIndex] = elem;
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elementIndex += 1;
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elems = document.querySelectorAll('img');
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i = elems.length;
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while ( i-- ) {
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elem = elems[i];
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if ( elem.complete ) {
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collapser.add(elem);
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}
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}
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var details = {
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what: 'filterRequests',
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pageURL: window.location.href,
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pageHostname: window.location.hostname,
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requests: requests
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};
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messager.send(details, onAnswerReceived);
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elems = document.querySelectorAll('iframe');
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i = elems.length;
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while ( i-- ) {
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collapser.addIFrame(elems[i]);
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}
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collapser.process(0);
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})();
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/******************************************************************************/
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@ -435,60 +435,42 @@ var tagNameToRequestTypeMap = {
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// Evaluate many requests
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var filterRequests = function(pageStore, details) {
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var requests = details.requests;
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if ( !pageStore || !pageStore.getNetFilteringSwitch() ) {
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return requests;
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}
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if ( µb.userSettings.collapseBlocked === false ) {
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return requests;
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}
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//console.debug('messaging.js/contentscript-end.js: processing %d requests', requests.length);
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var µburi = µb.URI;
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var isBlockResult = µb.isBlockResult;
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// Create evaluation context
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details.pageHostname = vAPI.punycodeHostname(details.pageHostname);
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details.pageDomain = µburi.domainFromHostname(details.pageHostname);
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details.rootHostname = pageStore.rootHostname;
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details.rootDomain = pageStore.rootDomain;
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details.requestHostname = '';
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var inRequests = details.requests;
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var outRequests = [];
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var request;
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var i = inRequests.length;
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while ( i-- ) {
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request = inRequests[i];
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if ( tagNameToRequestTypeMap.hasOwnProperty(request.tagName) === false ) {
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continue;
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}
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details.requestURL = vAPI.punycodeURL(request.url);
|
||||
details.requestHostname = µburi.hostnameFromURI(details.requestURL);
|
||||
details.requestType = tagNameToRequestTypeMap[request.tagName];
|
||||
if ( isBlockResult(pageStore.filterRequest(details)) ) {
|
||||
outRequests.push(request);
|
||||
}
|
||||
}
|
||||
return {
|
||||
collapse: µb.userSettings.collapseBlocked,
|
||||
requests: outRequests
|
||||
var context = {
|
||||
pageHostname: vAPI.punycodeHostname(details.pageHostname),
|
||||
pageDomain: µburi.domainFromHostname(details.pageHostname),
|
||||
rootHostname: pageStore.rootHostname,
|
||||
rootDomain: pageStore.rootDomain,
|
||||
requestURL: '',
|
||||
requestHostname: '',
|
||||
requestType: ''
|
||||
};
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
// Evaluate a single request
|
||||
|
||||
var filterRequest = function(pageStore, details) {
|
||||
if ( tagNameToRequestTypeMap.hasOwnProperty(details.tagName) === false ) {
|
||||
return;
|
||||
}
|
||||
var µburi = µb.URI;
|
||||
details.pageHostname = vAPI.punycodeHostname(details.pageHostname);
|
||||
details.pageDomain = µburi.domainFromHostname(details.pageHostname);
|
||||
details.rootHostname = pageStore.rootHostname;
|
||||
details.rootDomain = pageStore.rootDomain;
|
||||
details.requestURL = vAPI.punycodeURL(details.requestURL);
|
||||
details.requestHostname = µburi.hostnameFromURI(details.requestURL);
|
||||
details.requestType = tagNameToRequestTypeMap[details.tagName];
|
||||
if ( µb.isBlockResult(pageStore.filterRequest(details)) ) {
|
||||
return {
|
||||
collapse: µb.userSettings.collapseBlocked,
|
||||
id: details.id
|
||||
};
|
||||
var request;
|
||||
var i = requests.length;
|
||||
while ( i-- ) {
|
||||
request = requests[i];
|
||||
context.requestURL = vAPI.punycodeURL(request.url);
|
||||
context.requestHostname = µburi.hostnameFromURI(request.url);
|
||||
context.requestType = tagNameToRequestTypeMap[request.tagName];
|
||||
if ( isBlockResult(pageStore.filterRequest(context)) ) {
|
||||
request.collapse = true;
|
||||
}
|
||||
}
|
||||
return requests;
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
@ -521,20 +503,7 @@ var onMessage = function(details, sender, callback) {
|
||||
|
||||
// Evaluate many requests
|
||||
case 'filterRequests':
|
||||
if ( pageStore && pageStore.getNetFilteringSwitch() ) {
|
||||
response = filterRequests(pageStore, details);
|
||||
}
|
||||
break;
|
||||
|
||||
// Evaluate a single request
|
||||
case 'filterRequest':
|
||||
if ( pageStore && pageStore.getNetFilteringSwitch() ) {
|
||||
// console.log('contentscript-end.js > filterRequest(%o)', details);
|
||||
response = filterRequest(pageStore, details);
|
||||
}
|
||||
if ( response === undefined ) {
|
||||
response = { id: details.id };
|
||||
}
|
||||
response = filterRequests(pageStore, details);
|
||||
break;
|
||||
|
||||
default:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user