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<?php
namespace CloudflareBypass\RequestMethod;
class Curl
{
/**
* Cookies set per request.
* @var array
*/
private $cookies = array();
/**
* Request headers per request.
* @var array
*/
private $request_headers = array();
/**
* cURL handle.
* @var resource
*/
private $ch;
/**
* Sets $this->ch to specified cURL handle.
*
* @access public
* @param resource $curl cURL handle
* @throws \ErrorException if $ch IS NOT a cURL handle
*/
public function __construct($ch = null)
{
if (!is_resource($ch)) {
throw new \ErrorException('Curl handle is required!');
}
$this->ch = $ch;
}
/**
* Get request headers set for current request.
*
* @access public
*/
public function getRequestHeaders()
{
return $this->request_headers;
}
/**
* Get cookies set for current request.
*
* @access public
*/
public function getCookies()
{
return $this->cookies;
}
/**
* Enables cURL object handle to fetch and store response headers and cookies.
* WARNING: Overrides "CURLOPT_HEADERFUNCTION".
*
* @access public
* @return bool
*/
public function enableResponseStorage()
{
return $this->setopt(CURLOPT_HEADERFUNCTION, array($this, 'storeResponseHeader'));
}
/**
* Clones cURL object handle.
*
* @access public
* @see http://php.net/curl-copy-handle
* @return object cURL object
*/
public function copyHandle()
{
return new Curl(curl_copy_handle($this->ch));
}
/**
* @access public
* @see http://php.net/curl_setopt
* @param integer $opt
* @param mixed $val
* @return bool
*/
public function setopt($opt, $val)
{
return curl_setopt($this->ch, $opt, $val);
}
/**
* @access public
* @see http://php.net/curl-getinfo
* @param integer $opt (optional)
* @return mixed $val
*/
public function getInfo($opt = null)
{
$args = array($this->ch);
if (func_num_args()) {
$args[] = $opt;
}
return call_user_func_array('curl_getinfo', $args);
}
/**
* Truncates cookie feed.
* Truncates request headers.
*
* @access public
* @see http://php.net/curl_exec
* @return mixed
*/
public function exec()
{
$this->cookies = array();
$this->request_headers = array();
$res = curl_exec($this->ch);
$info = curl_getinfo($this->ch);
if (isset($info['request_header'])) {
// Store request headers and cookies.
$headers = explode("\n", $info['request_header']);
$headers_count = count($headers);
for ($i=0; $i<$headers_count; $i++) {
$this->storeRequestHeader($this->ch, $headers[$i]);
}
}
return $res;
}
/**
* @access public
* @see http://php.net/curl_close
*/
public function close()
{
curl_close($this->ch);
}
/**
* Returns full config for specified cookie name.
*
* @access public
* @param string $cookie Cookie name
* @return string Cookie value or NULL
*/
public function getCookie($cookie)
{
if (isset($this->cookies[$cookie])) {
return $this->cookies[$cookie];
}
return null;
}
/**
* Returns value of specified request header.
*
* @access public
* @param string $header Request header
* @return string Request header or NULL
*/
public function getRequestHeader($header)
{
if (isset($this->request_headers[$header])) {
return $this->request_headers[$header];
}
return null;
}
/**
* Populates request headers into $this->request_headers (header name -> value).
* Populates cookies into $this->cookies (cookie name -> cookie value).
*
* @access private
* @param resource $ch cURL handle
* @param string $header Request header
*/
private function storeRequestHeader($ch, $header)
{
if (strpos($header, ':') !== false) {
// Match request header and value.
list($name, $val) = explode(':', $header);
$this->request_headers[$name] = $val;
}
if (strpos($header, 'Cookie') !== false) {
// Convert string into array of cookies.
$cookies = explode(';', substr($header, strpos($header, ':')+1));
$cookies_count = count($cookies);
// Store cookies.
for ($i=0; $i<$cookies_count; $i++) {
list($cookie, $val) = explode('=', trim($cookies[$i]));
$this->cookies[$cookie] = $cookie . '=' . $val . ';';
}
}
}
/**
* Populates cookies set into $this->cookies (cookie name -> full cookie).
*
* @access private
* @param resource $ch cURL handle
* @param string $header Request header
* @return integer Byte-length of request header
*/
private function storeResponseHeader($ch, $header)
{
if (strpos($header, 'Set-Cookie') !== false) {
// Match cookie name and value.
preg_match('/Set\-Cookie: ([^=]+)(.+)/', $header, $matches);
$this->cookies[$matches[1]] = $matches[1] . $matches[2];
}
return strlen($header);
}
}