I need help with the setting up payTM plugin in opencart v3.0.3.2, I'm getting following error when I click on extension setting:
Parse error: syntax error, unexpected '.', expecting ',' or ';' in
/home2/infipick/public_html/shop/system/library/paytm/PaytmConstants.php on line 14
I'm using php 7.3 on apache server which is hosted online and I used a theme called nutripe by thementic. I fllow all the needed step and getting following issue only on payment plugin.
Here are the files that I'm using of payTM plugin:
PaytmConstants.php
<?php
class PaytmConstants{
CONST TRANSACTION_URL_PRODUCTION = "https://securegw.paytm.in/order/process";
CONST TRANSACTION_STATUS_URL_PRODUCTION = "https://securegw.paytm.in/order/status";
CONST TRANSACTION_URL_STAGING = "https://securegw-stage.paytm.in/order/process";
CONST TRANSACTION_STATUS_URL_STAGING = "https://securegw-stage.paytm.in/order/status";
CONST SAVE_PAYTM_RESPONSE = true;
CONST CHANNEL_ID = "WEB";
CONST APPEND_TIMESTAMP = false;
CONST ONLY_SUPPORTED_INR = true;
CONST X_REQUEST_ID = "PLUGIN_OPENCART_" . VERSION;
CONST MAX_RETRY_COUNT = 3;
CONST CONNECT_TIMEOUT = 10;
CONST TIMEOUT = 10;
CONST LAST_UPDATED = "20200120";
CONST PLUGIN_VERSION = "2.0";
CONST CUSTOM_CALLBACK_URL = "";
}
?>
PaytmHelper.php
<?php
require_once(DIR_SYSTEM . 'library/paytm/PaytmConstants.php');
class PaytmHelper{
/**
* include timestap with order id
*/
public static function getPaytmOrderId($order_id){
if($order_id && PaytmConstants::APPEND_TIMESTAMP){
return $order_id . '_' . date("YmdHis");
}else{
return $order_id;
}
}
/**
* exclude timestap with order id
*/
public static function getOrderId($order_id){
if(($pos = strrpos($order_id, '_')) !== false && PaytmConstants::APPEND_TIMESTAMP) {
$order_id = substr($order_id, 0, $pos);
}
return $order_id;
}
/**
* exclude timestap with order id
*/
public static function getTransactionURL($isProduction = 0){
if($isProduction == 1){
return PaytmConstants::TRANSACTION_URL_PRODUCTION;
}else{
return PaytmConstants::TRANSACTION_URL_STAGING;
}
}
/**
* exclude timestap with order id
*/
public static function getTransactionStatusURL($isProduction = 0){
if($isProduction == 1){
return PaytmConstants::TRANSACTION_STATUS_URL_PRODUCTION;
}else{
return PaytmConstants::TRANSACTION_STATUS_URL_STAGING;
}
}
/**
* check and test cURL is working or able to communicate properly with paytm
*/
public static function validateCurl($transaction_status_url = ''){
if(!empty($transaction_status_url) && function_exists("curl_init")){
$ch = curl_init(trim($transaction_status_url));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$res = curl_exec($ch);
curl_close($ch);
return $res !== false;
}
return false;
}
public static function getcURLversion(){
if(function_exists('curl_version')){
$curl_version = curl_version();
if(!empty($curl_version['version'])){
return $curl_version['version'];
}
}
return false;
}
public static function executecUrl($apiURL, $requestParamList) {
$responseParamList = array();
$JsonData = json_encode($requestParamList);
$postData = 'JsonData='.urlencode($JsonData);
$ch = curl_init($apiURL);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, PaytmConstants::CONNECT_TIMEOUT);
curl_setopt($ch, CURLOPT_TIMEOUT, PaytmConstants::TIMEOUT);
/*
** default value is 2 and we also want to use 2
** so no need to specify since older PHP version might not support 2 as valid value
** see https://curl.haxx.se/libcurl/c/CURLOPT_SSL_VERIFYHOST.html
*/
// curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 2);
// TLS 1.2 or above required
// curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen($postData))
);
$jsonResponse = curl_exec($ch);
if (!curl_errno($ch)) {
return json_decode($jsonResponse, true);
} else {
return false;
}
}
}
?>
PaytmChecksum.php <?php
class PaytmChecksum{
private static $iv = "XXXXXXXXXXXX";
static public function encrypt($input, $key) {
$key = html_entity_decode($key);
if(function_exists('openssl_encrypt')){
$data = openssl_encrypt ( $input , "AES-128-CBC" , $key, 0, self::$iv );
} else {
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, 'cbc');
$input = self::pkcs5Pad($input, $size);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', 'cbc', '');
mcrypt_generic_init($td, $key, self::$iv);
$data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = base64_encode($data);
}
return $data;
}
static public function decrypt($encrypted, $key) {
$key = html_entity_decode($key);
if(function_exists('openssl_decrypt')){
$data = openssl_decrypt ( $encrypted , "AES-128-CBC" , $key, 0, self::$iv );
} else {
$encrypted = base64_decode($encrypted);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', 'cbc', '');
mcrypt_generic_init($td, $key, self::$iv);
$data = mdecrypt_generic($td, $encrypted);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = self::pkcs5Unpad($data);
$data = rtrim($data);
}
return $data;
}
static public function generateSignature($params, $key) {
if(!is_array($params) && !is_string($params)){
throw new Exception("string or array expected, ".gettype($params)." given");
}
if(is_array($params)){
$params = self::getStringByParams($params);
}
return self::generateSignatureByString($params, $key);
}
static public function verifySignature($params, $key, $checksum){
if(!is_array($params) && !is_string($params)){
throw new Exception("string or array expected, ".gettype($params)." given");
}
if(is_array($params)){
$params = self::getStringByParams($params);
}
return self::verifySignatureByString($params, $key, $checksum);
}
static private function generateSignatureByString($params, $key){
$salt = self::generateRandomString(4);
return self::calculateChecksum($params, $key, $salt);
}
static private function verifySignatureByString($params, $key, $checksum){
$paytm_hash = self::decrypt($checksum, $key);
$salt = substr($paytm_hash, -4);
return $paytm_hash == self::calculateHash($params, $salt) ? true : false;
}
static private function generateRandomString($length) {
$random = "";
srand((double) microtime() * 1000000);
$data = "9876543210ZYXWVUTSRQPONMLKJIHGFEDCBAabcdefghijklmnopqrstuvwxyz!@#$&_";
for ($i = 0; $i < $length; $i++) {
$random .= substr($data, (rand() % (strlen($data))), 1);
}
return $random;
}
static private function getStringByParams($params) {
ksort($params);
$params = array_map(function ($value){
return ($value == null) ? "" : $value;
}, $params);
return implode("|", $params);
}
static private function calculateHash($params, $salt){
$finalString = $params . "|" . $salt;
$hash = hash("sha256", $finalString);
return $hash . $salt;
}
static private function calculateChecksum($params, $key, $salt){
$hashString = self::calculateHash($params, $salt);
return self::encrypt($hashString, $key);
}
static private function pkcs5Pad($text, $blocksize) {
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
static private function pkcs5Unpad($text) {
$pad = ord($text{strlen($text) - 1});
if ($pad > strlen($text))
return false;
return substr($text, 0, -1 * $pad);
}
}