'sorry some error occurred' while integrating PayUMoney payment gateway in Test mode

Question

I\'m trying to integrate PayUMoney payment gateway in my client site. My client provided me the login details of PayUMoney. I was able to l

Answer 1

Try this:

 >
 */
function pay ( $params, $salt )
{
    if ( ! is_array( $params ) ) throw new Exception( 'Pay params is empty' );

    if ( empty( $salt ) ) throw new Exception( 'Salt is empty' );

    $payment = new Payment( $salt );
    $result = $payment->pay( $params );
    unset( $payment );

    return $result;
}

/**
 * Displays the pay page.
 * 
 * @param unknown $params           
 * @param unknown $salt         
 * @throws Exception
 */
function pay_page ( $params, $salt )
{
    if ( count( $_POST ) && isset( $_POST['mihpayid'] ) && ! empty( $_POST['mihpayid'] ) ) {
        $_POST['surl'] = $params['surl'];
        $_POST['furl'] = $params['furl'];

        $result = response( $_POST, $salt );
        Misc::show_reponse( $result );
    } else {
        $host = (isset( $_SERVER['https'] ) ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];

        if ( isset( $_SERVER['REQUEST_URI'] ) && ! empty( $_SERVER['REQUEST_URI'] ) ) $params['surl'] = $host;
        if ( isset( $_SERVER['REQUEST_URI'] ) && ! empty( $_SERVER['REQUEST_URI'] ) ) $params['furl'] = $host;

        $result = pay( $params, $salt );
        Misc::show_page( $result );
    }
}

/**
 * Returns the response object.
 * 
 * @param unknown $params           
 * @param unknown $salt         
 * @throws Exception
 * @return number
 */
function response ( $params, $salt )
{
    if ( ! is_array( $params ) ) throw new Exception( 'PayU response params is empty' );

    if ( empty( $salt ) ) throw new Exception( 'Salt is empty' );

    if ( empty( $params['status'] ) ) throw new Exception( 'Status is empty' );

    $response = new Response( $salt );
    $result = $response->get_response( $_POST );
    unset( $response );

    return $result;
}

/**
 * Basic autoloader
 * 
 * @param classname $file           
 *
define( 'INCLUDE_PATH', dirname( __FILE__ ) . '/src/' );
function __autoload ( $file )
{
    require_once INCLUDE_PATH . $file . '.php';
}
*/

/* Should libcurl or curl.so be absent. */

if ( ! function_exists( 'curl_init' ) ) :

    define( 'CURLOPT_URL', 1 );
    define( 'CURLOPT_USERAGENT', 2 );
    define( 'CURLOPT_POST', 3 );
    define( 'CURLOPT_POSTFIELDS', 4 );
    define( 'CURLOPT_RETURNTRANSFER', 5 );
    define( 'CURLOPT_REFERER', 6 );
    define( 'CURLOPT_HEADER', 7 );
    define( 'CURLOPT_TIMEOUT', 8 );
    define( 'CURLOPT_CONNECTTIMEOUT', 9 );
    define( 'CURLOPT_FOLLOWLOCATION', 10 );
    define( 'CURLOPT_AUTOREFERER', 11 );
    define( 'CURLOPT_PROXY', 12 );
    define( 'CURLOPT_PORT', 13 );
    define( 'CURLOPT_HTTPHEADER', 14 );
    define( 'CURLOPT_SSL_VERIFYHOST', 15 );
    define( 'CURLOPT_SSL_VERIFYPEER', 16 );

    function curl_init ( $url = false )
    {
        return new Curl( $url );
    }

    function curl_setopt ( &$ch, $name, $value )
    {
        $ch->setopt( $name, $value );
    }

    function curl_exec ( $ch )
    {
        return $ch->exec();
    }

    function curl_close ( &$ch )
    {
        unset( $ch );
    }

    function curl_errno ( $ch )
    {
        return $ch->error;
    }

    function curl_error ( $ch_error )
    {
        return "Could not open socket";
    }

    function curl_getinfo ( $ch, $opt = NULL )
    {
        return $ch->info;
    }

    function curl_setopt_array ( &$ch, $opt )
    {
        $ch->setoptArray( $opt );
    }



endif;


class Curl {
    private $url = "";
    private $user_agent = "libCurl";
    private $return_result = false;
    private $referrer = false;
    private $cookies_on = false;
    private $proxy = array ();
    private $timeout = 30;
    private $cookies;
    private $headers;
    private $method = "GET";
    private $httpHeader = "application/x-www-form-urlencoded";

    public $error = 0;
    public $info = array ();

    function __construct ( $url = false )
    {
        $this->cookies = new Cookies();
        $this->url = $url;
        $this->info['total_time'] = time();
    }

    function __destruct ()
    {}

    private function getHost ( $url )
    {
        $url = str_replace( array ( "http://", "https://" ), "", $url );
        $tmp = explode( "/", $url );
        return $tmp[0];
    }

    private function getQuery ( $url )
    {
        $url = str_replace( array ( "http://", "https://" ), "", $url );
        $tmp = explode( "/", $url, 2 );
        return "/" . $tmp[1];
    }

    private function _parseRawData ( $rawData )
    {
        $array = explode( "\r\n\r\n", $rawData, 2 );
        $this->header_data = $array[0];
        $this->content = $array[1];
        $this->_parseHeaders( $array[0] );
    }

    private function _parseHeaders ( $rawHeaders )
    {
        $rawHeaders = trim( $rawHeaders );
        $headers = explode( "\r\n", $rawHeaders );

        foreach ( $headers as $header ) {
            if ( preg_match( "|http/1\.. (\d+)|i", $header, $match ) ) {
                $this->status_code = $match[1];
                continue;
            }

            $headerArray = explode( ":", $header );
            $headerName = trim( $headerArray[0] );
            $headerValue = trim( $headerArray[1] );

            if ( preg_match( "|set-cookie2?|i", $headerName ) ) $this->cookies->add( $headerValue );
            if ( isset( $headerName ) ) $this->headers[strtolower( $headerName )] = $headerValue;
        }

        if ( isset( $this->headers["location"] ) ) {
            $this->url = $this->headers["location"];
            $this->exec();
        }
    }

    public function setopt ( $name, $value = false )
    {
        switch ( $name ) {
        case CURLOPT_URL :
            $this->url = $value;
            $this->proxy["port"] = substr( $this->url, 0, 5 ) === 'https' ? 443 : 80;
            break;
        case CURLOPT_USERAGENT :
            $this->user_agent = $value;
            break;
        case CURLOPT_POST :
            $this->method = ($value == true) ? "POST" : "GET";
            break;
        case CURLOPT_POSTFIELDS :
            $this->post_data = $value;
            break;
        case CURLOPT_RETURNTRANSFER :
            $this->return_result = ($value == true);
            break;
        case CURLOPT_REFERER :
            $this->referrer = $value;
            break;
        case CURLOPT_HEADER :
            $this->options["header"] = ($value == true);
            break;
        case CURLOPT_PROXY :
            list ( $this->proxy["host"], $this->proxy["port"] ) = explode( ":", $value );
            break;
        case CURLOPT_CONNECTTIMEOUT : /* Fall through. */
        case CURLOPT_TIMEOUT :
            $this->timeout = ($value >= 0) ? $value : 30;
            break;
        case CURLOPT_PORT :
            $this->proxy["port"] = $value ? $value : (substr( $this->url, 0, 5 ) === 'https' ? 443 : 80);
            break;
        case CURLOPT_HTTPHEADER :
            $this->httpHeader = substr( implode( ";", $value ), 0, - 1 );
            break;
        }
    }

    public function setoptArray ( $options )
    {
        foreach ( $options as $name => $value )
            $this->setopt( $name, $value );
    }

    public function exec ()
    {
        $errno = false;
        $errstr = false;
        $url = $this->url;

        $host = $this->getHost( $url );
        $query = $this->getQuery( $url );

        $this->proxy["host"] = $host;

        if ( isset( $this->proxy["port"] ) ) {
            $this->proxy["host"] = (443 === $this->proxy["port"]) ? "ssl://$host" : $host;
            $fp = pfsockopen( $this->proxy["host"], $this->proxy["port"], $errno, $errstr, $this->timeout );
            $request = $query;
        } else {
            $fp = pfsockopen( $host, 80, $errno, $errstr, $this->timeout );
            $request = $query;
        }

        if ( ! $fp ) { /*trigger_error($errstr, E_WARNING);*/ $this->error = 1;
            return;
        }

        $headers = $this->method . " $request HTTP/1.0 \r\nHost: $host \r\n";
        if ( $this->user_agent ) $headers .= "User-Agent: " . $this->user_agent . "\r\n";
        if ( $this->referrer ) $headers .= "Referer: " . $this->referrer . "\r\n";
        if ( $this->method == "POST" ) {
            $headers .= "Content-Type: " . $this->httpHeader . "\r\n";
            $headers .= "Content-Length: " . strlen( $this->post_data ) . "\r\n";
        }

        if ( $this->cookies_on ) $headers .= $this->cookies->createHeader();
        $headers .= "Connection: Close\r\n\r\n";
        if ( "POST" == $this->method ) $headers .= $this->post_data;
        $headers .= "\r\n\r\n";

        fwrite( $fp, $headers );
        $rawData = "";
        while ( ! feof( $fp ) )
            $rawData .= fread( $fp, 512 );
            /* fclose($fp); /* Too lazy to read the docs.*/
        $this->info['total_time'] = time() - $this->info['total_time'];

        $this->_parseRawData( $rawData );
        if ( $this->options["header"] ) $this->content = $rawData;
        if ( $this->return_result ) return $this->content;
        echo $this->content;
    }

}

class Cookies {
    private $cookies;

    function __construct ()
    {}

    function __destruct ()
    {}

    public function add ( $cookie )
    {
        list ( $data, $etc ) = explode( ";", $cookie, 2 );
        list ( $name, $value ) = explode( "=", $data );
        $this->cookies[trim( $name )] = trim( $value );
    }

    public function createHeader ()
    {
        if ( 0 == count( $this->cookies ) || ! is_array( $this->cookies ) ) return "";
        $output = "";
        foreach ( $this->cookies as $name => $value )
            $output .= "$name=$value; ";
        return "Cookies: $output\r\n";
    }

}

class Misc {

    const SUCCESS = 1;
    const FAILURE = 0;

    public static function get_hash ( $params, $salt )
    {
        $posted = array ();

        if ( ! empty( $params ) ) foreach ( $params as $key => $value )
            $posted[$key] = htmlentities( $value, ENT_QUOTES );

        $hash_sequence = "key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5|udf6|udf7|udf8|udf9|udf10";

        $hash_vars_seq = explode( '|', $hash_sequence );
        $hash_string = null;

        foreach ( $hash_vars_seq as $hash_var ) {
            $hash_string .= isset( $posted[$hash_var] ) ? $posted[$hash_var] : '';
            $hash_string .= '|';
        }

        $hash_string .= $salt;
        return strtolower( hash( 'sha512', $hash_string ) );
    }

    public static function reverse_hash ( $params, $salt, $status )
    {
        $posted = array ();
        $hash_string = null;

        if ( ! empty( $params ) ) foreach ( $params as $key => $value )
            $posted[$key] = htmlentities( $value, ENT_QUOTES );

        $additional_hash_sequence = 'base_merchantid|base_payuid|miles|additional_charges';
        $hash_vars_seq = explode( '|', $additional_hash_sequence );

        foreach ( $hash_vars_seq as $hash_var )
            $hash_string .= isset( $posted[$hash_var] ) ? $posted[$hash_var] . '|' : '';

        $hash_sequence = "udf10|udf9|udf8|udf7|udf6|udf5|udf4|udf3|udf2|udf1|email|firstname|productinfo|amount|txnid|key";
        $hash_vars_seq = explode( '|', $hash_sequence );
        $hash_string .= $salt . '|' . $status;

        foreach ( $hash_vars_seq as $hash_var ) {
            $hash_string .= '|';
            $hash_string .= isset( $posted[$hash_var] ) ? $posted[$hash_var] : '';
        }

        return strtolower( hash( 'sha512', $hash_string ) );
    }

    public static function curl_call ( $url, $data )
    {
        $ch = curl_init();

        curl_setopt_array( $ch, array ( 
            CURLOPT_URL => $url, 
            CURLOPT_POSTFIELDS => $data, 
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_POST => true, 
            CURLOPT_RETURNTRANSFER => true, 
            CURLOPT_USERAGENT => 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36', 
            CURLOPT_SSL_VERIFYHOST => 0, 
            CURLOPT_SSL_VERIFYPEER => 0 ) );

        $o = curl_exec( $ch );

        if ( curl_errno( $ch ) ) {
            $c_error = curl_error( $ch );

            if ( empty( $c_error ) ) $c_error = 'Server Error';

            return array ( 'curl_status' => Misc::FAILURE, 'error' => $c_error );
        }

        $o = trim( $o );
        return array ( 'curl_status' => Misc::SUCCESS, 'result' => $o );
    }

    public static function show_page ( $result )
    {

        if ( $result['status'] === Misc::SUCCESS )
            header( 'Location:' . $result['data'] );
        else
            throw new Exception( $result['data'] );
    }

    public static function show_reponse ( $result )
    {
        if ( $result['status'] === Misc::SUCCESS )
            $result['data']();
        else
            return $result['data'];
    }

}



class Payment {

    private $url;
    private $salt;
    private $params = array ();

    public function __construct ( $salt, $env = 'test' )
    {
        $this->salt = $salt;

        switch ( $env ) {
        case 'test' :
            $this->url = 'https://test.payu.in/';
            break;
        case 'prod' :
            $this->url = 'https://secure.payu.in/';
            break;
        default :
            $this->url = 'https://test.payu.in/';
        }
    }

    public function __destruct ()
    {
        unset( $this->url );
        unset( $this->salt );
        unset( $this->params );
    }

    public function __set ( $key, $value )
    {
        $this->params[$key] = $value;
    }

    public function __get ( $key )
    {
        return $this->params[$key];
    }

    public function pay ( $params = null )
    {
        if ( is_array( $params ) ) foreach ( $params as $key => $value )
            $this->params[$key] = $value;

        $error = $this->check_params();

        if ( $error === true ) {
            $this->params['hash'] = Misc::get_hash( $this->params, $this->salt );
            $result = Misc::curl_call( $this->url . '_payment?type=merchant_txn', http_build_query( $this->params ) );
            $transaction_id = ($result['curl_status'] === Misc::SUCCESS) ? $result['result'] : null;

            if ( empty( $transaction_id ) ) return array ( 
                'status' => Misc::FAILURE, 
                'data' => $result['error'] );

            return array ( 
                'status' => Misc::SUCCESS, 
                'data' => $this->url . '_payment_options?mihpayid=' . $transaction_id );
        } else {
            return array ( 'status' => Misc::FAILURE, 'data' => $error );
        }
    }

    private function check_params ()
    {
        if ( empty( $this->params['key'] ) ) return $this->error( 'key' );
        if ( empty( $this->params['txnid'] ) ) return $this->error( 'txnid' );
        if ( empty( $this->params['amount'] ) ) return $this->error( 'amount' );
        if ( empty( $this->params['firstname'] ) ) return $this->error( 'firstname' );
        if ( empty( $this->params['email'] ) ) return $this->error( 'email' );
        if ( empty( $this->params['phone'] ) ) return $this->error( 'phone' );
        if ( empty( $this->params['productinfo'] ) ) return $this->error( 'productinfo' );
        if ( empty( $this->params['surl'] ) ) return $this->error( 'surl' );
        if ( empty( $this->params['furl'] ) ) return $this->error( 'furl' );

        return true;
    }

    private function error ( $key )
    {
        return 'Mandatory parameter ' . $key . ' is empty';
    }

}


class Response {

    private $salt;
    private $params = array ();

    public function __construct ( $salt )
    {
        $this->salt = $salt;
    }

    public function __destruct ()
    {
        unset( $this->salt );
        unset( $this->params );
    }

    public function __set ( $key, $value )
    {
        $this->params[$key] = $value;
    }

    public function __get ( $key )
    {
        return $this->params[$key];
    }

    public function get_response ( $params = null )
    {
        $this->params = (is_array( $params ) && count( $params )) ? $params : $_POST;

        $error = $this->check_params();

        if ( $error === true ) {
            if ( Misc::reverse_hash( $this->params, $this->salt, $this->params['status'] ) === $this->params['hash'] ) {
                switch ( $this->params['status'] ) {
                case 'success' :
                    return array ( 
                        'status' => Misc::SUCCESS, 
                        'data' => $this->params['surl'] );
                    break;
                case 'failure' :
                    return array ( 
                        'status' => Misc::SUCCESS, 
                        'data' => $this->params['furl'] );
                    break;
                default :
                    return array ( 
                        'status' => Misc::FAILURE, 
                        'data' => 'Unmapped status' );
                }
            } else {
                return array ( 
                    'status' => Misc::FAILURE, 
                    'data' => 'Hash Mismatch' );
            }
        } else {
            return array ( 'status' => Misc::FAILURE, 'data' => $error );
        }

    }

    private function check_params ()
    {
        if ( empty( $this->params['key'] ) ) return $this->error( 'key' );
        if ( empty( $this->params['txnid'] ) ) return $this->error( 'txnid' );
        if ( empty( $this->params['amount'] ) ) return $this->error( 'amount' );
        if ( empty( $this->params['firstname'] ) ) return $this->error( 'firstname' );
        if ( empty( $this->params['email'] ) ) return $this->error( 'email' );
        if ( empty( $this->params['phone'] ) ) return $this->error( 'phone' );
        if ( empty( $this->params['productinfo'] ) ) return $this->error( 'productinfo' );
        if ( empty( $this->params['surl'] ) ) return $this->error( 'surl' );
        if ( empty( $this->params['furl'] ) ) return $this->error( 'furl' );
        return true;
    }

    private function error ( $key )
    {
        return 'Mandatory parameter ' . $key . ' is empty';
    }

}
$txnid = uniqid();
$response = pay_page( array ('key' => 'tradus', 'txnid' => uniqid( 'animesh_' ), 'amount' => rand( 0, 100 ),'firstname' => 'animesh', 'email' => 'animesh.kundu@payu.in', 'phone' => '1234567890','productinfo' => 'This is shit', 'surl' => 'payment_success', 'furl' => 'payment_failure'), '200' );

?>