mirror of https://github.com/gorhill/uBlock
372 lines
11 KiB
JavaScript
372 lines
11 KiB
JavaScript
/*******************************************************************************
|
|
|
|
µBlock - a Chromium browser extension to block requests.
|
|
Copyright (C) 2014 Raymond Hill
|
|
|
|
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://github.com/gorhill/uBlock
|
|
*/
|
|
|
|
/* jshint multistr: true */
|
|
/* global chrome */
|
|
|
|
// Injected into content pages
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://github.com/gorhill/httpswitchboard/issues/345
|
|
|
|
var messaging = (function(name){
|
|
var port = null;
|
|
var dangling = false;
|
|
var requestId = 1;
|
|
var requestIdToCallbackMap = {};
|
|
var listenCallback = null;
|
|
|
|
var onPortMessage = function(details) {
|
|
if ( typeof details.id !== 'number' ) {
|
|
return;
|
|
}
|
|
// Announcement?
|
|
if ( details.id < 0 ) {
|
|
if ( listenCallback ) {
|
|
listenCallback(details.msg);
|
|
}
|
|
return;
|
|
}
|
|
var callback = requestIdToCallbackMap[details.id];
|
|
if ( !callback ) {
|
|
return;
|
|
}
|
|
callback(details.msg);
|
|
delete requestIdToCallbackMap[details.id];
|
|
checkDisconnect();
|
|
};
|
|
|
|
var start = function(name) {
|
|
port = chrome.runtime.connect({
|
|
name: name +
|
|
'/' +
|
|
String.fromCharCode(
|
|
Math.random() * 0x7FFF | 0,
|
|
Math.random() * 0x7FFF | 0,
|
|
Math.random() * 0x7FFF | 0,
|
|
Math.random() * 0x7FFF | 0
|
|
)
|
|
});
|
|
port.onMessage.addListener(onPortMessage);
|
|
};
|
|
|
|
if ( typeof name === 'string' && name.length > 0 ) {
|
|
start(name);
|
|
}
|
|
|
|
var stop = function() {
|
|
listenCallback = null;
|
|
dangling = true;
|
|
checkDisconnect();
|
|
};
|
|
|
|
var ask = function(msg, callback) {
|
|
if ( !callback ) {
|
|
tell(msg);
|
|
return;
|
|
}
|
|
var id = requestId++;
|
|
port.postMessage({ id: id, msg: msg });
|
|
requestIdToCallbackMap[id] = callback;
|
|
};
|
|
|
|
var tell = function(msg) {
|
|
port.postMessage({ id: 0, msg: msg });
|
|
};
|
|
|
|
var listen = function(callback) {
|
|
listenCallback = callback;
|
|
};
|
|
|
|
var checkDisconnect = function() {
|
|
if ( !dangling ) {
|
|
return;
|
|
}
|
|
if ( Object.keys(requestIdToCallbackMap).length ) {
|
|
return;
|
|
}
|
|
port.disconnect();
|
|
port = null;
|
|
};
|
|
|
|
return {
|
|
start: start,
|
|
stop: stop,
|
|
ask: ask,
|
|
tell: tell,
|
|
listen: listen
|
|
};
|
|
})('contentscript-end.js');
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
(function() {
|
|
|
|
/******************************************************************************/
|
|
|
|
// ABP cosmetic filters
|
|
|
|
var CosmeticFiltering = function() {
|
|
this.queriedSelectors = {};
|
|
this.injectedSelectors = {};
|
|
this.classSelectors = null;
|
|
this.idSelectors = null;
|
|
};
|
|
|
|
CosmeticFiltering.prototype.onDOMContentLoaded = function() {
|
|
this.classesFromNodeList(document.querySelectorAll('*[class]'));
|
|
this.idsFromNodeList(document.querySelectorAll('*[id]'));
|
|
this.retrieveGenericSelectors();
|
|
};
|
|
|
|
CosmeticFiltering.prototype.retrieveGenericSelectors = function() {
|
|
var selectors = this.classSelectors !== null ? Object.keys(this.classSelectors) : [];
|
|
if ( this.idSelectors !== null ) {
|
|
selectors = selectors.concat(this.idSelectors);
|
|
}
|
|
if ( selectors.length > 0 ) {
|
|
//console.log('µBlock> ABP cosmetic filters: retrieving CSS rules using %d selectors', selectors.length);
|
|
messaging.ask({
|
|
what: 'retrieveGenericCosmeticSelectors',
|
|
pageURL: window.location.href,
|
|
selectors: selectors
|
|
},
|
|
this.retrieveHandler.bind(this)
|
|
);
|
|
}
|
|
this.idSelectors = null;
|
|
this.classSelectors = null;
|
|
};
|
|
|
|
CosmeticFiltering.prototype.retrieveHandler = function(selectors) {
|
|
if ( !selectors ) {
|
|
return;
|
|
}
|
|
var styleText = [];
|
|
this.filterUnfiltered(selectors.hideUnfiltered, selectors.hide);
|
|
this.reduce(selectors.hide, this.injectedSelectors);
|
|
if ( selectors.hide.length ) {
|
|
var hideStyleText = '{{hideSelectors}} {display:none !important;}'
|
|
.replace('{{hideSelectors}}', selectors.hide.join(','));
|
|
styleText.push(hideStyleText);
|
|
this.applyCSS(selectors.hide, 'display', 'none');
|
|
//console.debug('µBlock> generic cosmetic filters: injecting %d CSS rules:', selectors.hide.length, hideStyleText);
|
|
}
|
|
this.filterUnfiltered(selectors.donthideUnfiltered, selectors.donthide);
|
|
this.reduce(selectors.donthide, this.injectedSelectors);
|
|
if ( selectors.donthide.length ) {
|
|
var dontHideStyleText = '{{donthideSelectors}} {display:initial !important;}'
|
|
.replace('{{donthideSelectors}}', selectors.donthide.join(','));
|
|
styleText.push(dontHideStyleText);
|
|
this.applyCSS(selectors.donthide, 'display', 'initial');
|
|
//console.debug('µBlock> generic cosmetic filters: injecting %d CSS rules:', selectors.donthide.length, dontHideStyleText);
|
|
}
|
|
if ( styleText.length > 0 ) {
|
|
var style = document.createElement('style');
|
|
style.appendChild(document.createTextNode(styleText.join('\n')));
|
|
var parent = document.body || document.documentElement;
|
|
if ( parent ) {
|
|
parent.appendChild(style);
|
|
}
|
|
}
|
|
};
|
|
|
|
CosmeticFiltering.prototype.applyCSS = function(selectors, prop, value) {
|
|
if ( document.body === null ) {
|
|
return;
|
|
}
|
|
var elems = document.querySelectorAll(selectors);
|
|
var i = elems.length;
|
|
while ( i-- ) {
|
|
elems[i].style[prop] = value;
|
|
}
|
|
};
|
|
|
|
CosmeticFiltering.prototype.filterUnfiltered = function(inSelectors, outSelectors) {
|
|
var i = inSelectors.length;
|
|
var selector;
|
|
while ( i-- ) {
|
|
selector = inSelectors[i];
|
|
if ( this.injectedSelectors[selector] ) {
|
|
continue;
|
|
}
|
|
if ( document.querySelector(selector) !== null ) {
|
|
outSelectors.push(selector);
|
|
}
|
|
}
|
|
};
|
|
|
|
CosmeticFiltering.prototype.reduce = function(selectors, dict) {
|
|
var first = dict.µb === undefined;
|
|
var i = selectors.length, selector, end;
|
|
while ( i-- ) {
|
|
selector = selectors[i];
|
|
if ( first || !dict[selector] ) {
|
|
if ( end !== undefined ) {
|
|
selectors.splice(i+1, end-i);
|
|
end = undefined;
|
|
}
|
|
dict[selector] = true;
|
|
} else if ( end === undefined ) {
|
|
end = i;
|
|
}
|
|
}
|
|
if ( end !== undefined ) {
|
|
selectors.splice(0, end+1);
|
|
}
|
|
dict.µb = true;
|
|
};
|
|
|
|
CosmeticFiltering.prototype.classesFromNodeList = function(nodes) {
|
|
if ( !nodes ) {
|
|
return;
|
|
}
|
|
if ( this.classSelectors === null ) {
|
|
this.classSelectors = {};
|
|
}
|
|
var classNames, className, j;
|
|
var i = nodes.length;
|
|
while ( i-- ) {
|
|
className = nodes[i].className;
|
|
if ( typeof className !== 'string' ) {
|
|
continue;
|
|
}
|
|
className = className.trim();
|
|
if ( className === '' ) {
|
|
continue;
|
|
}
|
|
if ( className.indexOf(' ') < 0 ) {
|
|
className = '.' + className;
|
|
if ( this.queriedSelectors[className] ) {
|
|
continue;
|
|
}
|
|
this.classSelectors[className] = true;
|
|
this.queriedSelectors[className] = true;
|
|
continue;
|
|
}
|
|
classNames = className.trim().split(/\s+/);
|
|
j = classNames.length;
|
|
while ( j-- ) {
|
|
className = classNames[j];
|
|
if ( className === '' ) {
|
|
continue;
|
|
}
|
|
className = '.' + className;
|
|
if ( this.queriedSelectors[className] ) {
|
|
continue;
|
|
}
|
|
this.classSelectors[className] = true;
|
|
this.queriedSelectors[className] = true;
|
|
}
|
|
}
|
|
};
|
|
|
|
CosmeticFiltering.prototype.idsFromNodeList = function(nodes) {
|
|
if ( !nodes ) {
|
|
return;
|
|
}
|
|
if ( this.idSelectors === null ) {
|
|
this.idSelectors = [];
|
|
}
|
|
var id;
|
|
var i = nodes.length;
|
|
while ( i-- ) {
|
|
id = nodes[i].id;
|
|
if ( typeof id !== 'string' ) {
|
|
continue;
|
|
}
|
|
id = id.trim();
|
|
if ( id === '' ) {
|
|
continue;
|
|
}
|
|
id = '#' + id;
|
|
if ( this.queriedSelectors[id] ) {
|
|
continue;
|
|
}
|
|
this.idSelectors.push(id);
|
|
this.queriedSelectors[id] = true;
|
|
}
|
|
};
|
|
|
|
CosmeticFiltering.prototype.allFromNodeList = function(nodes) {
|
|
this.classesFromNodeList(nodes);
|
|
this.idsFromNodeList(nodes);
|
|
};
|
|
|
|
var cosmeticFiltering = new CosmeticFiltering();
|
|
|
|
/******************************************************************************/
|
|
|
|
var mutationObservedHandler = function(mutations) {
|
|
var iMutation = mutations.length;
|
|
var mutation;
|
|
while ( iMutation-- ) {
|
|
mutation = mutations[iMutation];
|
|
if ( !mutation.addedNodes || !mutation.addedNodes.length ) {
|
|
// TODO: attr changes also must be dealth with, but then, how
|
|
// likely is it...
|
|
continue;
|
|
}
|
|
cosmeticFiltering.allFromNodeList(mutation.addedNodes);
|
|
}
|
|
|
|
cosmeticFiltering.retrieveGenericSelectors();
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
// rhill 2013-11-09: Weird... This code is executed from µBlock
|
|
// context first time extension is launched. Avoid this.
|
|
// TODO: Investigate if this was a fluke or if it can really happen.
|
|
// I suspect this could only happen when I was using chrome.tabs.executeScript(),
|
|
// because now a delarative content script is used, along with "http{s}" URL
|
|
// pattern matching.
|
|
|
|
// console.debug('µBlock> window.location.href = "%s"', window.location.href);
|
|
|
|
if ( /^https?:\/\/./.test(window.location.href) === false ) {
|
|
console.debug("Huh?");
|
|
return;
|
|
}
|
|
|
|
cosmeticFiltering.onDOMContentLoaded();
|
|
|
|
// Observe changes in the DOM
|
|
|
|
// This fixes http://acid3.acidtests.org/
|
|
if ( document.body ) {
|
|
// https://github.com/gorhill/httpswitchboard/issues/176
|
|
var observer = new MutationObserver(mutationObservedHandler);
|
|
observer.observe(document.body, {
|
|
attributes: false,
|
|
childList: true,
|
|
characterData: false,
|
|
subtree: true
|
|
});
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
})();
|