<?php

/**
 * Validates an IPv6 address.
 * @author Feyd @ forums.devnetwork.net (public domain)
 * @note This function requires brackets to have been removed from address
 *       in URI.
 */
class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4
{

    /**
     * @param string $aIP
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return bool|string
     */
    public function validate($aIP, $config, $context)
    {
        if (!$this->ip4) {
            $this->_loadRegex();
        }

        $original = $aIP;

        $hex = '[0-9a-fA-F]';
        $blk = '(?:' . $hex . '{1,4})';
        $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128

        //      prefix check
        if (strpos($aIP, '/') !== false) {
            if (preg_match('#' . $pre . '$#s', $aIP, $find)) {
                $aIP = substr($aIP, 0, 0 - strlen($find[0]));
                unset($find);
            } else {
                return false;
            }
        }

        //      IPv4-compatiblity check
        if (preg_match('#(?<=:' . ')' . $this->ip4 . '$#s', $aIP, $find)) {
            $aIP = substr($aIP, 0, 0 - strlen($find[0]));
            $ip = explode('.', $find[0]);
            $ip = array_map('dechex', $ip);
            $aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
            unset($find, $ip);
        }

        //      compression check
        $aIP = explode('::', $aIP);
        $c = count($aIP);
        if ($c > 2) {
            return false;
        } elseif ($c == 2) {
            list($first, $second) = $aIP;
            $first = explode(':', $first);
            $second = explode(':', $second);

            if (count($first) + count($second) > 8) {
                return false;
            }

            while (count($first) < 8) {
                array_push($first, '0');
            }

            array_splice($first, 8 - count($second), 8, $second);
            $aIP = $first;
            unset($first, $second);
        } else {
            $aIP = explode(':', $aIP[0]);
        }
        $c = count($aIP);

        if ($c != 8) {
            return false;
        }

        //      All the pieces should be 16-bit hex strings. Are they?
        foreach ($aIP as $piece) {
            if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece))) {
                return false;
            }
        }
        return $original;
    }
}

// vim: et sw=4 sts=4

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                        Request Example (guzzle)
                        

                        
                            
<?php
                            
 require_once('vendor/autoload.php');
                            
 $client = new \GuzzleHttp\Client();
                            
 $response = $client->request('POST', $base_url. 'v1/generate-token', [
                            
'headers' => [
                            
  'accept' => 'application/json',
                            
  'content-type' => 'application/json',
                            
 ],
                            
'form_params' => [
                            
  'client_id'     => '$client_id',
                            
  'secret_id'     => 'secret_id',
                            
  'env'           => 'env',
                            
  'merchant_id'   => 'merchant_id',
                            
 ],
                            
                            
]);
                            
echo $response->getBody();
                        
                    
                

                    
                        
**Response: SUCCESS (200 OK)**
                        
{
                        
 "message": {
                        
 "success": [
                        
  "Successfully token is generated"
                        
 ]
                        
},
                        
"data": {
                        
 "token":"eyJpdiI6InpkczhjTjhQdVhUL2lKQ0pSUUx6aUE9P
SIsInZhbHVlIjoiVGVBTVBDTXltbjNZcEIvdEJveGpTSno3TU5NRUtn
VkhCZ1pHTFNCUnZGQ2UxMnYxN202cEE1YVRDTEFsc0ZERExoTjdtL0dTL2x
oU3QzeUJJOExiMUx5T0w1L0llUXhTUkU1cWVLWEdEbEplb0dKNXcwbTNRM0
VxdkUwYzZuNFdtNkhMQ0pRZysyNWkvdzBxSlBoSVBSOGFTekNnR2RXNHVtc
G9lMGZOTmNCcm1hR3c5Sk9KTnB4Y3ltZDl6cm90MThrR21Ca3B1azc3bXRi
Q0J6SW96UVo1elNkU1ZqeE05bTcwWGp1MEUxWlJFdnNWTmpSbnVpeW92b2U
4dXZkUGgyb1VmK0luaGdyaFlsVTZlcVpVRnZlTG1DeFF6Ykk2T2h6Z3Jzbn
IyNHpNdHowSE5JdDR0Y0pZT20zUm1XYW8iLCJtYWMiOiJlY2M4NGE1OGUzYz
kzYzk0YzljNmVmNjE0YWI0ZDIwOGI3NDQ2YWEyY2ZhNzc0NzE4ZmY1ZmYyMz

                        IyZmQzNDY1IiwidGFnIjoiIn0=",
                        
},
                        
"type": "success"
                        
}
                    
                

                    
                        
**Response: ERROR (400 FAILED)**
                        
{
                        
 "message": {
                        
 "error": [
                        
  "Invalid credentials."
                        
 ]
                        
},
                        
"data": null,
                        
"type": "error"
                        
}