/**
* pretty much a helper function to set up the request
*/
public static function from_consumer_and_token($consumer, $token, $http_method, $http_url, $parameters = NULL)
{
@$parameters or $parameters = array();
$defaults = array("oauth_version" => OAuthRequest::$version, "oauth_nonce" => OAuthRequest::generate_nonce(), "oauth_timestamp" => OAuthRequest::generate_timestamp(), "oauth_consumer_key" => $consumer->key);
if ($token) {
$defaults['oauth_token'] = $token->key;
}
$parameters = array_merge($defaults, $parameters);
return new OAuthRequest($http_method, $http_url, $parameters);
}
/**
* This is to be used with an action configured to receive IPN as indicated
* by pesapal. When the action recieves request from Pesapal, Get the
* parameters and pass the details to this function.
* you will receive transaction status in the format:
* pesapal_notification_type=CHANGE&pesapal_transaction_tracking_id =<the
* unique tracking id of the transaction>&pesapal_merchant_reference=<the
* merchant reference>. Also remember to parse the header of this response
* to get the payment status.
*
* After that remember to send back a response to pesapal in the same format
* using your web app.This is to acknowledge the receipt of the sent IPN.
* Send back the response after doing some things such as updating records
* in your data store.
*
*
* @param String $notificationType
* this one of the notification types specified by pesapal
* @param String $reference
* the order id/ reference id you created during
* {@link Pesapal#PostPesapalDirectOrderV4}
* @param trackingId
* the reference that was returned by pesapal server during
*
* @param function $callback a function to indicated that database update
* was successfull
*
* order
* @return a boolean yes to indicate successfull IPN of failure. Null for nothing
*/
public function InstantPaymentNotificationWithCallback($notificationType, $reference, $trackingId, $callback)
{
$this->url = $this->http . "pesapal.com/api/querypaymentstatus";
if ($notificationType == "CHANGE" && $trackingId != "") {
$this->OauthConsumer = new OAuthConsumer($this->consumer_key, $this->consumer_secret);
//get transaction status
$this->OauthRequest = OAuthRequest::from_consumer_and_token($this->OauthConsumer, $this->token, "GET", $this->url, $this->params);
$this->OauthRequest->set_parameter("pesapal_merchant_reference", $reference);
$this->OauthRequest->set_parameter("pesapal_transaction_tracking_id", $trackingId);
$this->OauthRequest->sign_request($this->signature_method, $this->OauthConsumer, $this->token);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $this->OauthRequest);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
if (defined('CURL_PROXY_REQUIRED')) {
if (CURL_PROXY_REQUIRED == 'True') {
$proxy_tunnel_flag = defined('CURL_PROXY_TUNNEL_FLAG') && strtoupper(CURL_PROXY_TUNNEL_FLAG) == 'FALSE' ? false : true;
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, $proxy_tunnel_flag);
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
curl_setopt($ch, CURLOPT_PROXY, CURL_PROXY_SERVER_DETAILS);
}
}
$response = curl_exec($ch);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$raw_header = substr($response, 0, $header_size - 4);
$headerArray = explode("\r\n\r\n", $raw_header);
$header = $headerArray[count($headerArray) - 1];
//transaction status
$elements = preg_split("/=/", substr($response, $header_size));
$status = $elements[1];
curl_close($ch);
//UPDATE YOUR DB TABLE WITH NEW STATUS FOR TRANSACTION WITH pesapal_transaction_tracking_id $pesapalTrackingId
if ($callback($status) && $status != "PENDING") {
$resp = "pesapal_notification_type={$notificationType}&pesapal_transaction_tracking_id={$trackingId}&pesapal_merchant_reference={$reference}";
ob_start();
echo $resp;
ob_flush();
exit;
}
} else {
return null;
}
}
