mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/SecureLinkFixer
synced 2024-11-28 09:20:05 +00:00
109 lines
3.4 KiB
PHP
109 lines
3.4 KiB
PHP
<?php
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/**
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* Copyright (C) 2018-2019 Kunal Mehta <legoktm@debian.org>
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*
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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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*
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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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*
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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 <https://www.gnu.org/licenses/>.
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*/
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namespace MediaWiki\SecureLinkFixer;
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use RuntimeException;
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use Wikimedia\StaticArrayWriter;
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/**
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* Downloads Mozilla's HSTS preload list and builds it into a PHP file.
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*
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* We explicitly don't use any MediaWiki code so that this class
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* can be run without needing all of MediaWiki to be installed. The
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* only exception right now is the StaticArrayWriter class.
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*/
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class ListFetcher {
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/** @var ?callable */
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private $output;
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/**
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* @param callable|null $output
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*/
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public function __construct( callable $output = null ) {
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$this->output = $output;
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}
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/**
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* @param string $text
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*/
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private function output( $text ) {
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if ( $this->output ) {
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call_user_func( $this->output, $text );
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}
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}
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/**
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* Fetches the latest revision/date available from mozilla-central
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*
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* @return string[]
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*/
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public function getLatestInfo(): array {
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// phpcs:ignore Generic.Files.LineLength
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$feedUrl = 'https://hg.mozilla.org/mozilla-central/atom-log/tip/security/manager/ssl/nsSTSPreloadList.inc';
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$feed = file_get_contents( $feedUrl );
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preg_match( '!"https://hg.mozilla.org/mozilla-central/rev/([a-f0-9]*?)"!', $feed, $matches );
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preg_match( '!<updated>(.*?)</updated>!', $feed, $updated );
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if ( !isset( $matches[1] ) || !isset( $updated[1] ) ) {
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throw new RuntimeException( "Unable to parse revision id/updated date for HSTS preload list" );
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}
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$rev = $matches[1];
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$date = substr( $updated[1], 0, 10 );
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return [ $rev, $date ];
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}
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/**
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* Downloads the list for the given revision/date and formats it for PHP
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*
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* @param string $rev mercurial revision
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* @param string $date YYYY-MM-DD formatted date
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* @return string PHP file code
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*/
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public function fetchList( $rev, $date ) {
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$this->output( "Downloading the HSTS preload list (revision $rev)..." );
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// phpcs:ignore Generic.Files.LineLength
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$url = "https://hg.mozilla.org/mozilla-central/raw-file/$rev/security/manager/ssl/nsSTSPreloadList.inc";
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$lines = explode( "\n", file_get_contents( $url ) );
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$this->output( "done\n" );
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$inList = false;
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$header = <<<HEADER
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Generated by fetchList.php using mozilla-central@$rev ($date)
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, You can obtain one at https://mozilla.org/MPL/2.0/.
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phpcs:ignoreFile
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HEADER;
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// XXX: Should we care about gPreloadListExpirationTime?
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$data = [];
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foreach ( $lines as $line ) {
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if ( $line === '%%' ) {
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$inList = !$inList;
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continue;
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}
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if ( $inList ) {
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$exploded = explode( ', ', $line );
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$data[$exploded[0]] = (int)$exploded[1];
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}
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}
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$writer = new StaticArrayWriter();
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return $writer->create( $data, $header );
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}
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}
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