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<?php |
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namespace Pronamic\WordPress\Pay\Gateways\Ingenico; |
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/** |
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* Title: Ingenico security class |
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* Description: |
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* Copyright: Copyright (c) 2005 - 2016 |
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* Company: Pronamic |
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* |
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* @author Remco Tolsma |
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* @version 2.0.0 |
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*/ |
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class Security { |
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/** |
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* The Ogone calculations parameters in |
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* |
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* @var array |
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*/ |
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private static $calculations_parameters_in; |
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/** |
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* The Ogone calculations parameters out |
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* |
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* @var array |
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*/ |
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private static $calculations_parameters_out; |
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/** |
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* Get calculations parameters in |
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*/ |
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public static function get_calculations_parameters_in() { |
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if ( ! isset( self::$calculations_parameters_in ) ) { |
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self::$calculations_parameters_in = array(); |
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$file = dirname( __FILE__ ) . '/../data/calculations-parameters-sha-in.txt'; |
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if ( is_readable( $file ) ) { |
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self::$calculations_parameters_in = file( $file, FILE_IGNORE_NEW_LINES ); |
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} |
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} |
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return self::$calculations_parameters_in; |
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} |
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/** |
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* Get calculations parameters in |
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*/ |
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public static function get_calculations_parameters_out() { |
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if ( ! isset( self::$calculations_parameters_out ) ) { |
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self::$calculations_parameters_out = array(); |
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$file = dirname( __FILE__ ) . '/../data/calculations-parameters-sha-out.txt'; |
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if ( is_readable( $file ) ) { |
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self::$calculations_parameters_out = file( $file, FILE_IGNORE_NEW_LINES ); |
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} |
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} |
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return self::$calculations_parameters_out; |
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} |
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/** |
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* Get request data |
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* |
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* @return array |
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*/ |
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public static function get_request_data() { |
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$data = array(); |
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if ( isset( $_SERVER['REQUEST_METHOD'] ) ) { // WPCS: input var ok. |
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switch ( $_SERVER['REQUEST_METHOD'] ) { // WPCS: input var ok. |
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case 'GET': |
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// @todo see how we can improve security around this |
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// phpcs:ignore WordPress.Security.NonceVerification.Recommended |
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$data = $_GET; |
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break; |
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case 'POST': |
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// @todo see how we can improve security around this |
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// phpcs:ignore WordPress.Security.NonceVerification.Missing |
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$data = $_POST; |
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break; |
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} |
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} |
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return $data; |
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} |
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/** |
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* Get calculation fields. |
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* |
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* @param array $calculation_fields Calculation fields. |
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* @param array $fields Fields. |
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* |
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* @return array |
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*/ |
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public static function get_calculation_fields( $calculation_fields, $fields ) { |
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$calculation_fields = array_flip( $calculation_fields ); |
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return array_intersect_key( $fields, $calculation_fields ); |
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} |
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/** |
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* Get signature. |
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* |
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* @param array $fields Fields. |
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* @param string $passphrase Pass phrase. |
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* @param string $hash_algorithm Hashing algorithm. |
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* |
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* @return string |
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*/ |
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public static function get_signature( $fields, $passphrase, $hash_algorithm ) { |
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// This string is constructed by concatenating the values of the fields sent with the order (sorted |
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// alphabetically, in the format ‘parameter=value’), separated by a passphrase. |
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$string = ''; |
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// All parameters need to be put alphabetically. |
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ksort( $fields ); |
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// Loop. |
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foreach ( $fields as $name => $value ) { |
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$value = (string) $value; |
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// Use of empty will fail, value can be string '0'. |
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if ( strlen( $value ) > 0 ) { |
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$name = strtoupper( $name ); |
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$string .= $name . '=' . $value . $passphrase; |
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} |
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} |
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// Hash. |
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$result = hash( $hash_algorithm, $string ); |
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// String to uppercase. |
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$result = strtoupper( $result ); |
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return $result; |
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} |
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/** |
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* Sign data. |
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* |
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* @param Data $data Data. |
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* @param string $pass_phrase Pass phrase. |
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* @param string $hash_algorithm Hashing algorithm. |
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*/ |
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public static function sign_data( Data $data, $pass_phrase, $hash_algorithm ) { |
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$calculation_fields = self::get_calculations_parameters_in(); |
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$fields = self::get_calculation_fields( $calculation_fields, $data->get_fields() ); |
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$signature = self::get_signature( $fields, $pass_phrase, $hash_algorithm ); |
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$data->set_field( 'SHASign', $signature ); |
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} |
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} |
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wp-pay-gateways /
ogone
