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<?php |
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/** |
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* Abstract class for the family of response classes |
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* |
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* @package php_EasyPay |
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* @version 1.1 |
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* @author Dmitry Shovchko <[email protected]> |
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* |
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*/ |
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namespace EasyPay\Provider31; |
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use EasyPay\Log as Log; |
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use EasyPay\Key as Key; |
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use EasyPay\OpenSSL as OpenSSL; |
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abstract class Response extends \DomDocument |
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{ |
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/** |
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* @var string |
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* |
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*/ |
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const TEMPLATE = '<Response><StatusCode></StatusCode><StatusDetail></StatusDetail><DateTime></DateTime></Response>'; |
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/** |
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* @var \DOMNode |
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*/ |
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protected $Response; |
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/** |
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* @var \DOMElement |
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*/ |
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protected $Sign; |
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/** |
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* Response constructor |
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* |
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*/ |
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public function __construct() |
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{ |
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parent::__construct('1.0', 'UTF-8'); |
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$this->loadXML(self::TEMPLATE); |
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$this->Response = $this->firstChild; |
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$this->set_DateTime(); |
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} |
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/** |
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* Set DateTime element value by current time |
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*/ |
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public function set_DateTime() |
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{ |
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$this->setElementValue('DateTime', date('Y-m-d\TH:i:s', time())); |
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} |
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/** |
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* Create new element node |
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* |
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* @param string $name |
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* @param string $value (optional) |
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*/ |
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public function createElement($name, $value=NULL) |
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{ |
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return parent::createElement($name, $value); |
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} |
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/** |
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* Set node value |
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* |
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* @param string $name |
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* @param string $value |
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*/ |
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public function setElementValue($name, $value) |
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{ |
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foreach ($this->Response->childNodes as $child) |
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{ |
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if ($child->nodeName == $name) |
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{ |
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$child->nodeValue = $value; |
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} |
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} |
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} |
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/** |
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* Dumps response into a string |
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* |
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* @return string XML |
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*/ |
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public function friendly() |
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{ |
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$this->encoding = 'UTF-8'; |
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$this->formatOutput = true; |
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return $this->saveXML(NULL, LIBXML_NOEMPTYTAG); |
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} |
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/** |
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* Sign and send response |
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* |
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* @param array $options |
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*/ |
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public function sign_and_out($options) |
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{ |
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$this->sign($options); |
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$this->out_header(); |
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$this->out_body($this->friendly()); |
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} |
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/** |
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* Send header |
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*/ |
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protected function out_header() |
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{ |
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ob_clean(); |
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header("Content-Type: text/xml; charset=utf-8"); |
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} |
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/** |
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* Send body |
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* |
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* @param string $body |
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*/ |
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protected function out_body($body) |
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{ |
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Log::instance()->debug('response sends: '); |
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Log::instance()->debug($body); |
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echo $body; |
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} |
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/** |
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* Add Sign (if hasn't yet done) |
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* |
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* @param array $options |
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*/ |
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protected function sign($options) |
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{ |
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if (isset($this->Sign)) return; |
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if (isset($options['UseSign']) && ($options['UseSign'] === true)) |
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{ |
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$this->Sign = $this->createElement('Sign'); |
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$this->Response->appendChild($this->Sign); |
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$sign = $this->generate_sign($options); |
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$this->Sign->nodeValue = $sign; |
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} |
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} |
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/** |
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* Generate signature of response |
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* |
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* @param array $options |
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* @return string |
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*/ |
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public function generate_sign($options) |
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{ |
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try |
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{ |
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$sign = ''; |
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$this->check_sign_result( |
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$result = (new OpenSSL())->sign( |
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$this->friendly(), |
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$sign, |
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(new OpenSSL())->get_priv_key($this->get_priv_key($options)) |
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) |
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); |
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return strtoupper(bin2hex($sign)); |
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} |
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catch (\Exception $e) |
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{ |
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return null; |
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} |
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} |
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/** |
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* load file with provider private key |
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* |
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* @param array $options |
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* @throws Exception\Runtime |
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* @return string |
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*/ |
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protected function get_priv_key($options) |
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{ |
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if ( ! isset($options['ProviderPKey'])) |
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{ |
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throw new \EasyPay\Exception\Runtime('The parameter ProviderPKey is not set!', -94); |
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} |
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return (new Key())->get($options['ProviderPKey'], 'private'); |
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} |
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/** |
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* check result of openssl sign |
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* |
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* @param bool $result |
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* @throws Exception\Sign |
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*/ |
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protected function check_sign_result($result) |
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{ |
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if ($result === FALSE) |
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{ |
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throw new \EasyPay\Exception\Sign('Can not generate signature!', -96); |
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} |
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} |
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} |
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