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/*******************************************************************************
uBlock Origin Lite - a comprehensive, MV3-compliant content blocker
Copyright (C) 2022-present 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 esversion:11 */
'use strict';
/******************************************************************************/
import { browser } from './ext.js';
/******************************************************************************/
function parsedURLromOrigin(origin) {
try {
return new URL(origin);
} catch(ex) {
}
}
/******************************************************************************/
const toBroaderHostname = hn => {
if ( hn === '*' ) { return ''; }
const pos = hn.indexOf('.');
return pos !== -1 ? hn.slice(pos+1) : '*';
};
/******************************************************************************/
// Is hna descendant hostname of hnb?
const isDescendantHostname = (hna, hnb) => {
if ( hnb === 'all-urls' ) { return true; }
if ( hna.endsWith(hnb) === false ) { return false; }
if ( hna === hnb ) { return false; }
return hna.charCodeAt(hna.length - hnb.length - 1) === 0x2E /* '.' */;
};
const isDescendantHostnameOfIter = (hna, iterb) => {
const setb = iterb instanceof Set ? iterb : new Set(iterb);
if ( setb.has('all-urls') || setb.has('*') ) { return true; }
let hn = hna;
while ( hn ) {
const pos = hn.indexOf('.');
if ( pos === -1 ) { break; }
hn = hn.slice(pos + 1);
if ( setb.has(hn) ) { return true; }
}
return false;
};
const intersectHostnameIters = (itera, iterb) => {
const setb = iterb instanceof Set ? iterb : new Set(iterb);
if ( setb.has('all-urls') || setb.has('*') ) { return Array.from(itera); }
const out = [];
for ( const hna of itera ) {
if ( setb.has(hna) || isDescendantHostnameOfIter(hna, setb) ) {
out.push(hna);
}
}
return out;
};
const subtractHostnameIters = (itera, iterb) => {
const setb = iterb instanceof Set ? iterb : new Set(iterb);
if ( setb.has('all-urls') || setb.has('*') ) { return []; }
const out = [];
for ( const hna of itera ) {
if ( setb.has(hna) ) { continue; }
if ( isDescendantHostnameOfIter(hna, setb) ) { continue; }
out.push(hna);
}
return out;
};
/******************************************************************************/
const matchesFromHostnames = hostnames => {
const out = [];
for ( const hn of hostnames ) {
if ( hn === '*' || hn === 'all-urls' ) {
out.length = 0;
out.push('<all_urls>');
break;
}
out.push(`*://*.${hn}/*`);
}
return out;
};
const hostnamesFromMatches = origins => {
const out = [];
for ( const origin of origins ) {
if ( origin === '<all_urls>' ) {
out.push('all-urls');
continue;
}
const match = /^\*:\/\/(?:\*\.)?([^\/]+)\/\*/.exec(origin);
if ( match === null ) { continue; }
out.push(match[1]);
}
return out;
};
/******************************************************************************/
export const broadcastMessage = message => {
const bc = new self.BroadcastChannel('uBOL');
bc.postMessage(message);
};
/******************************************************************************/
const ubolLog = (...args) => {
// Do not pollute dev console in stable release.
if ( browser.runtime.id === 'ddkjiahejlhfcafbddmgiahcphecmpfh' ) { return; }
console.info('[uBOL]', ...args);
};
/******************************************************************************/
export {
parsedURLromOrigin,
toBroaderHostname,
isDescendantHostname,
isDescendantHostnameOfIter,
intersectHostnameIters,
subtractHostnameIters,
matchesFromHostnames,
hostnamesFromMatches,
ubolLog,
};
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