mirror of
https://github.com/gorhill/uBlock.git
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232c44eeb2
First iteration of adding scriptlet support. As with cosmetic filtering, scriptlet niijection occurs only on sites for which uBO Lite was granted extended permissions. At the moment, only three scriptlets are supported: - abort-current-script - json-prune - set-constant More will be added in the future.
124 lines
3.9 KiB
JavaScript
124 lines
3.9 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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try {
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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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(function(
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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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self.$args$
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);
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/******************************************************************************/
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} catch(ex) {
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}
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