Add SSL certificate support in configuration and api client

lib/ApiClient.php

@@ -179,6 +179,12 @@ class ApiClient
             curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
         }
         
+        if(! empty($this->config->getCertificate())){
+        	curl_setopt($curl, CURLOPT_SSLCERT, $this->config->getCertificate());
+        	curl_setopt($curl, CURLOPT_SSLKEY, $this->config->getCertificateKey());
+        	curl_setopt($curl, CURLOPT_SSLKEYPASSWD, $this->config->getCertificatePassphrase());
+        }
+
         if ($this->config->getCurlProxyHost()) {
             curl_setopt($curl, CURLOPT_PROXY, $this->config->getCurlProxyHost());
         }

lib/Configuration.php

@@ -141,6 +141,24 @@ class Configuration
      */
     protected $sslVerification = true;
 
+    /**
+     * Path to client certificate
+     * @var string path to client certificate
+     */
+    protected $certificate = null;
+    
+    /**
+     * Path to client certificate key file
+     * @var string path to client certificate key file
+     */
+    protected $certificateKey = null;
+    
+    /**
+     * passphrase for the certificate key file
+     * @var string passphrase for the certificate key file
+     */
+    protected $certificatePassphrase = null;
+    
     /**
      * Curl proxy host
      *
@@ -691,6 +709,67 @@ class Configuration
         return $this->sslVerification;
     }
     
+    /**
+     * Sets certificate file for client certificate
+     *
+     * @param string $certificate path to client certificate
+     * @return Configuration
+     */
+    public function setCertificate($certificate)
+    {
+    	$this->certificate = $certificate;
+    	return $this;
+    }
+    
+    /**
+     *
+     * @return string certificate file for client certificate
+     */
+    public function getCertificate()
+    {
+    	return $this->certificate;
+    }
+    
+    /**
+     * Set certificate key file
+     * @param string $certificatekey certificate key file
+     * @return \Swagger\Client\Configuration
+     */
+    public function setCertificateKey($certificatekey)
+    {
+    	$this->certificateKey = $certificatekey;
+    	return $this;
+    }
+    
+    /**
+     *
+     * @return string certificate key file
+     */
+    public function getCertificateKey()
+    {
+    	return $this->certificateKey;
+    }
+    
+    /**
+     * Set passphrase for client certificate key file
+     * @param string $passphrase passphrase for client certificate key file
+     * @return \Swagger\Client\Configuration
+     */
+    public function setCertificatePassphrase($passphrase)
+    {
+    	$this->certificatePassphrase = $passphrase;
+    	return $this;
+    }
+    
+    /**
+     *
+     * @return string passphrase for client certificate key file
+     */
+    public function getCertificatePassphrase()
+    {
+    	return $this->certificatePassphrase;
+    }
+
     /**
      * Gets the default configuration instance
      *