40 lines
1.1 KiB
PHP
40 lines
1.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Services;
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use Illuminate\Support\Uri;
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use InvalidArgumentException;
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class UrlService
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{
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public function host(string $url): string
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{
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$uri = Uri::of($url);
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$scheme = $uri->scheme();
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if ($scheme === null || $scheme === '') {
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throw new InvalidArgumentException("URL has no scheme: {$url}");
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}
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if (! in_array($scheme, ['http', 'https'], true)) {
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throw new InvalidArgumentException("Invalid URL scheme: {$scheme}");
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}
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if ($uri->user() !== null) {
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throw new InvalidArgumentException("URLs with embedded credentials not allowed: {$url}");
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}
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$host = $uri->host();
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if ($host === null || $host === '') {
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throw new InvalidArgumentException("URL has no host: {$url}");
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}
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$bareHost = preg_replace('/%.*$/', '', trim($host, '[]'));
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if (filter_var($bareHost, FILTER_VALIDATE_IP) !== false) {
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throw new InvalidArgumentException("IP literal hosts not allowed: {$host}");
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}
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return mb_strtolower($host);
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}
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}
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