Marek Miklewicz
31 lines
981 B
PHP
31 lines
981 B
PHP
<?php
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declare(strict_types=1);
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final class KeyName
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{
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public const MAX_LENGTH = 96;
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public static function build(string $serverName, string $username, int $timestamp): string
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{
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$server = self::clean($serverName);
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$user = self::clean($username);
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$raw = 'autologin-' . $server . '-' . $user . '-' . $timestamp;
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if (strlen($raw) <= self::MAX_LENGTH) {
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return $raw;
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}
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$hash = substr(hash('sha256', $raw), 0, 10);
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$suffix = '-' . $hash . '-' . $timestamp;
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$bodyMax = self::MAX_LENGTH - strlen($suffix);
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$body = rtrim(substr('autologin-' . $server . '-' . $user, 0, $bodyMax), '-');
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return $body . $suffix;
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}
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private static function clean(string $value): string
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{
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$value = strtolower(trim($value));
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$value = preg_replace('/[^a-z0-9-]+/', '-', $value) ?? '';
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$value = trim($value, '-');
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return $value !== '' ? $value : 'unknown';
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}
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}
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