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<?php declare(strict_types=1); |
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/** |
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* @license http://opensource.org/licenses/mit-license.php MIT |
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* @link https://github.com/nicoSWD |
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* @author Nicolas Oelgart <[email protected]> |
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*/ |
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namespace nicoSWD\SecHeaderCheck\Infrastructure\Header; |
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use nicoSWD\SecHeaderCheck\Domain\Header\AbstractHeaderProvider; |
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use nicoSWD\SecHeaderCheck\Domain\Header\Exception\ConnectionTimeoutException; |
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use nicoSWD\SecHeaderCheck\Domain\Header\Exception\MaxHeaderSizeExceededException; |
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use nicoSWD\SecHeaderCheck\Domain\URL\URL; |
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final class NativeHeaderProvider extends AbstractHeaderProvider |
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{ |
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private const ONE_KB = 1024; |
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private const MAX_HEADER_SIZE = self::ONE_KB * 8; |
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public function getRawHeaders(URL $url): string |
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{ |
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$fp = $this->connect($url); |
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$this->sendRequest($url, $fp); |
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$headers = ''; |
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$bytesRead = 0; |
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while (!feof($fp)) { |
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$line = $this->readLine($fp); |
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if ($line === false || trim($line) === '') { |
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break; |
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} |
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$bytesRead += strlen($line); |
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if ($this->hasExceededMaxSize($bytesRead)) { |
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throw new MaxHeaderSizeExceededException(); |
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} |
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$headers .= $line; |
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} |
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fclose($fp); |
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return $headers; |
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} |
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private function readLine($fp) |
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{ |
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return fgets($fp, self::ONE_KB * 2); |
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} |
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private function hasExceededMaxSize(int $bytesRead): bool |
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{ |
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return $bytesRead > self::MAX_HEADER_SIZE; |
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} |
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private function sendRequest(URL $url, $fp): void |
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{ |
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$request = "HEAD {$url->path()}{$url->query()} HTTP/1.1\r\n"; |
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$request .= "Host: {$url->host()}\r\n"; |
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$request .= "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n"; |
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$request .= "User-Agent: Security Headers Scanner/1.0 (https://github.com/nicoSWD)\r\n"; |
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$request .= "Connection: Close\r\n\r\n"; |
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fwrite($fp, $request); |
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} |
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private function connect(URL $url) |
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{ |
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if ($url->isHttps()) { |
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$scheme = 'ssl://'; |
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} else { |
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$scheme = ''; |
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} |
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$fp = @fsockopen($scheme . $url->host(), $url->port(), $errNo, $errStr, $this->connectionTimeout); |
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if (!$fp) { |
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throw new ConnectionTimeoutException(); |
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} |
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return $fp; |
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} |
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} |
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nicoSWD /
headsec
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