mirror of
https://github.com/gorhill/uBlock.git
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2a40e67577
Fixed trusted sites not being excluded from declarative scripting. Assign "uBOL_"-prefixed name to anonymous scripting functions so that they can be easily found in performance profiler results in dev tools. Imrpove spread of chunks of filters across declarative scripting files.
163 lines
5.2 KiB
JavaScript
163 lines
5.2 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2019-present Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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The scriptlets below are meant to be injected only into a
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web page context.
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*/
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/* jshint esversion:11 */
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'use strict';
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/******************************************************************************/
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/// name json-prune
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/******************************************************************************/
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// Important!
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// Isolate from global scope
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(function uBOL_jsonPrune() {
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/******************************************************************************/
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// $rulesetId$
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const argsMap = new Map(self.$argsMap$);
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const hostnamesMap = new Map(self.$hostnamesMap$);
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/******************************************************************************/
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// https://github.com/uBlockOrigin/uBlock-issues/issues/1545
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// - Add support for "remove everything if needle matches" case
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const scriptlet = (
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rawPrunePaths = '',
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rawNeedlePaths = ''
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) => {
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const prunePaths = rawPrunePaths !== ''
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? rawPrunePaths.split(/ +/)
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: [];
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let needlePaths;
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if ( prunePaths.length === 0 ) { return; }
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needlePaths = prunePaths.length !== 0 && rawNeedlePaths !== ''
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? rawNeedlePaths.split(/ +/)
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: [];
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const findOwner = function(root, path, prune = false) {
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let owner = root;
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let chain = path;
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for (;;) {
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if ( typeof owner !== 'object' || owner === null ) {
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return false;
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}
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const pos = chain.indexOf('.');
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if ( pos === -1 ) {
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if ( prune === false ) {
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return owner.hasOwnProperty(chain);
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}
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if ( chain === '*' ) {
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for ( const key in owner ) {
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if ( owner.hasOwnProperty(key) === false ) { continue; }
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delete owner[key];
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}
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} else if ( owner.hasOwnProperty(chain) ) {
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delete owner[chain];
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}
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return true;
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}
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const prop = chain.slice(0, pos);
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if (
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prop === '[]' && Array.isArray(owner) ||
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prop === '*' && owner instanceof Object
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) {
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const next = chain.slice(pos + 1);
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let found = false;
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for ( const key of Object.keys(owner) ) {
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found = findOwner(owner[key], next, prune) || found;
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}
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return found;
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}
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if ( owner.hasOwnProperty(prop) === false ) { return false; }
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owner = owner[prop];
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chain = chain.slice(pos + 1);
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}
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};
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const mustProcess = function(root) {
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for ( const needlePath of needlePaths ) {
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if ( findOwner(root, needlePath) === false ) {
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return false;
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}
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}
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return true;
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};
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const pruner = function(o) {
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if ( mustProcess(o) === false ) { return o; }
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for ( const path of prunePaths ) {
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findOwner(o, path, true);
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}
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return o;
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};
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JSON.parse = new Proxy(JSON.parse, {
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apply: function() {
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return pruner(Reflect.apply(...arguments));
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},
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});
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Response.prototype.json = new Proxy(Response.prototype.json, {
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apply: function() {
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return Reflect.apply(...arguments).then(o => pruner(o));
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},
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});
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};
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/******************************************************************************/
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let hn;
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try { hn = document.location.hostname; } catch(ex) { }
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while ( hn ) {
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if ( hostnamesMap.has(hn) ) {
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let argsHashes = hostnamesMap.get(hn);
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if ( typeof argsHashes === 'number' ) { argsHashes = [ argsHashes ]; }
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for ( const argsHash of argsHashes ) {
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const details = argsMap.get(argsHash);
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if ( details.n && details.n.includes(hn) ) { continue; }
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try { scriptlet(...details.a); } catch(ex) {}
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}
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}
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if ( hn === '*' ) { break; }
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const pos = hn.indexOf('.');
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if ( pos !== -1 ) {
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hn = hn.slice(pos + 1);
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} else {
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hn = '*';
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}
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}
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/******************************************************************************/
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argsMap.clear();
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hostnamesMap.clear();
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/******************************************************************************/
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})();
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/******************************************************************************/
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