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<?php |
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namespace Punkstar\Ssl; |
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class Reader |
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{ |
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/** |
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* Default connection timeout in seconds. |
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*/ |
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const DEFAULT_CONNECTION_TIMEOUT = 5; |
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/** |
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* Default port on which to expect https. |
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*/ |
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const DEFAULT_PORT = 443; |
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/** |
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* Option Flag: Name of option for defining a connection timeout. |
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*/ |
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const OPT_CONNECTION_TIMEOUT = 'connection_timeout'; |
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/** |
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* Connect to a URL and retrieve the SSL certificate. |
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* |
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* Available options: |
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* |
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* - connection_timeout: Timeout when connection to the URL, specified in seconds. |
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* |
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* @param $url |
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* @param array $options |
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* @return Certificate |
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* @throws Exception |
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*/ |
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1 |
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public function readFromUrl($url, array $options = []): Certificate |
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{ |
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1 |
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$urlHost = parse_url($url, PHP_URL_HOST); |
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1 |
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if ($urlHost === null) { |
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$urlHost = $url; |
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} |
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$urlPort = parse_url($url, PHP_URL_PORT); |
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if ($urlPort === null) { |
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$urlPort = self::DEFAULT_PORT; |
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} |
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$options = $this->prepareReadFromUrlOptions($options); |
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1 |
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$streamContext = stream_context_create(array( |
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1 |
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'ssl' => array( |
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'capture_peer_cert' => TRUE, |
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'verify_peer' => FALSE, |
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'verify_peer_name' => FALSE |
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) |
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)); |
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$stream = @stream_socket_client( |
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sprintf('ssl://%s:%d', $urlHost, $urlPort), |
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$errorNumber, |
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$errorString, |
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$options[self::OPT_CONNECTION_TIMEOUT], |
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STREAM_CLIENT_CONNECT, |
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$streamContext |
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); |
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if ($stream) { |
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$streamParams = stream_context_get_params($stream); |
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$certResource = $streamParams['options']['ssl']['peer_certificate']; |
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return new Certificate($this->certResourceToString($certResource)); |
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} |
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throw new Exception( |
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sprintf('Unable to connect to %s:%d', $urlHost, $urlPort), |
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Exception::CONNECTION_PROBLEM |
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); |
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} |
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/** |
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* @param $file |
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* @return Certificate |
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* @throws Exception |
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*/ |
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public function readFromFile($file): Certificate |
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{ |
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if (!file_exists($file)) { |
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throw new Exception(sprintf("File '%s' does not exist", $file), Exception::FILE_NOT_FOUND); |
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} |
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return new Certificate(file_get_contents($file)); |
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} |
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/** |
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* @param $certResource |
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* @return string |
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*/ |
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protected function certResourceToString($certResource): string |
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{ |
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$output = null; |
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openssl_x509_export($certResource, $output); |
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return $output; |
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} |
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/** |
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* @param $options |
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* @return array |
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*/ |
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protected function prepareReadFromUrlOptions(array $options): array |
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{ |
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if (!isset($options[self::OPT_CONNECTION_TIMEOUT])) { |
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$options[self::OPT_CONNECTION_TIMEOUT] = self::DEFAULT_CONNECTION_TIMEOUT; |
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} |
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return $options; |
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} |
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} |
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punkstar /
ssl
