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HSTSPreloadLookup.php
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HSTSPreloadLookup.php
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<?php
/**
* Copyright (C) 2018 Kunal Mehta <legoktm@debian.org>
*
* 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 <https://www.gnu.org/licenses/>.
*/
namespace MediaWiki\SecureLinkFixer;
class HSTSPreloadLookup {
private string $path;
/** @var array<string,int> */
private array $domains;
public function __construct( string $path ) {
$this->path = $path;
}
/**
* @param string $host Hostname
*
* @return bool
*/
public function isPreloaded( string $host ): bool {
// Lazy-load the domain mapping if it's not already set
$this->domains ??= require $this->path;
if ( isset( $this->domains[$host] ) ) {
// Host is directly in the preload list
return true;
}
// Check if parent subdomains are preloaded
$offset = strpos( $host, '.' );
while ( $offset !== false ) {
$parentdomain = substr( $host, $offset + 1 );
if ( isset( $this->domains[$parentdomain] ) ) {
// This subdomain is directly in the preload list, returns true when subdomains supports https
return (bool)$this->domains[$parentdomain];
}
// else it's not in the db, we might need to look it up again
// Find the next parent subdomain
$offset = strpos( $host, '.', $offset + 1 );
}
// @todo should we keep a negative cache?
return false;
}
}

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text/x-php
Expires
Aug 16 2026, 04:53 (12 w, 22 h ago)
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a4/de/000806b8a34e2d3f041da9ed1ca2
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HSTSPreloadLookup.php (1 KB)

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