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<?php
namespace CloudflareBypass\RequestMethod;
/**
* cURL wrapper.
* @author Kyran Rana
*/
class Curl implements \CloudflareBypass\Base\RequestMethod\RequestMethod
{
/**
* Request headers.
*
* @var array
*/
private $request_headers = array();
/**
* Response headers.
*
* @var array
*/
private $response_headers = array();
/**
* cURL handle.
*
* @var resource
*/
private $ch;
/**
* Initialises 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;
// secretly enable cookie engine.
$this->setOpt( CURLOPT_COOKIELIST, "" );
}
// ------------------------------------------------------------------------------------------------
// {{{ cURL Functions
/**
* Sets a cURL option.
*
* @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 );
}
/**
* Gets cURL info object.
*
* @access public
* @see http://php.net/curl_getinfo
* @param resource $ch
* @param mixed $opt
* @return object
*/
public function getInfo( $opt=null )
{
$args = array();
$args[] = $this->ch;
if (func_num_args()) {
$args[] = $opt;
}
return call_user_func_array( 'curl_getinfo', $args );
}
/**
* Executes cURL request.
*
* @access public
* @see http://php.net/curl_exec
* @return string
*/
public function exec()
{
return curl_exec( $this->ch );
}
/**
* Closes cURL request.
*
* @access public
* @see http://php.net/curl_close
*/
public function close()
{
curl_close( $this->ch );
}
// }}}
// ------------------------------------------------------------------------------------------------
// {{{ Getters
// {{{ RequestMethod getters
/**
* Executes current request.
*
* @access public
* @return string page contents
*/
public function getPage()
{
// clear request headers
$this->request_headers = array();
// clear response headers
$this->response_headers = array();
$response = $this->exec();
$info = $this->getInfo();
if (isset( $info['request_header'] )) {
// set request headers
$this->request_headers = preg_split( "/\r\n|\n/", $info['request_header'] );
}
return $response;
}
/**
* Gets http code for current request.
*
* @access public
* @return integer http code
*/
public function getHttpCode()
{
return $this->getInfo( CURLINFO_HTTP_CODE );
}
/**
* Gets url for current request.
*
* @access public
* @return string url.
*/
public function getUrl()
{
$info = $this->getInfo();
return $info['url'];
}
/**
* Gets all cookies for current request.
*
* @access public
* @return array all cookies.
*/
public function getCookies()
{
$cookies = $this->getInfo( CURLINFO_COOKIELIST );
$new_cookies = array();
foreach ($cookies as $cookie) {
// Reference: https://curl.haxx.se/libcurl/c/CURLOPT_COOKIELIST.html
list( $hostname, $subdomain, $path, $secure, $expiry, $name, $value ) = explode( "\t", $cookie );
$new_cookies[strtolower( $name )] = sprintf(
"Hostname=%s; Subdomain=%s; Path=%s; Secure=%s; Expiry=%s; Name=%s; Value=%s;",
$hostname, $subdomain, $path, $secure, $expiry, $name, $value );
}
return $new_cookies;
}
/**
* Get cookie set for current request.
*
* @access public
* @param string $cookie cookie name.
* @return mixed cookie value | null
*/
public function getCookie( $cookie )
{
$cookies = $this->getCookies();
$cookie = strtolower( $cookie );
if (isset( $cookies[$cookie] )) {
return $cookies[$cookie];
}
return null;
}
/**
* Get cURL handle
*
* @access public
* @return resource cURL handle.
*/
public function getResource()
{
return $this->ch;
}
/**
* Gets CF handle.
*
* @access public
* @return resource CF handle.
*/
public function getCFResource()
{
$ch = new Curl( curl_copy_handle( $this->ch ) );
$ch->setOpt( CURLINFO_HEADER_OUT, true );
$ch->setOpt( CURLOPT_HEADERFUNCTION, array( $ch, 'setResponseHeader' ) );
// secretly enable cookie engine.
$ch->setOpt( CURLOPT_COOKIELIST, "" );
return $ch;
}
/**
* Get request headers for current request.
*
* @access public
* @return array request headers
*/
public function getRequestHeaders()
{
return $this->request_headers;
}
/**
* Get request header for current request.
*
* @access public
* @param string $header Request header
* @return mixed Request header | null
*/
public function getRequestHeader( $header )
{
foreach ($this->request_headers as $rheader) {
if (strpos( $rheader, ':' ) !== false) {
list( $name, $value ) = explode( ':', $rheader );
if (strtolower( $name ) === strtolower( $header )) {
return $value;
}
}
}
return null;
}
/**
* Get response headers for current request.
*
* @access public
* @return array response headers.
*/
public function getResponseHeaders()
{
return $this->response_headers;
}
// }}}
// }}}
// ------------------------------------------------------------------------------------------------
// {{{ Setters
// {{{ RequestMethod setters
/**
* Sets url for current request.
*
* @access public
* @param string $url new url.
* @return void
*/
public function setUrl( $url )
{
$this->setOpt( CURLOPT_URL, $url );
}
/**
* Sets follow location for current request.
*
* @access public
* @param boolean $follow TRUE to follow location.
* @return void
*/
public function setFollowLocation( $follow )
{
$this->setOpt( CURLOPT_FOLLOWLOCATION, $follow );
}
/**
* Set cookie for current request.
*
* @access public
* @param string $name cookie to set.
* @param string $value value for cookie.
* @return void
*/
public function setCookie( $name, $value )
{
$cookie = implode( "\t", array_map( function( $elem ) {
list( $_, $val ) = explode( '=', $elem );
return substr( $val, 0, -1 );
}, explode( " ", $value )) );
$this->setOpt( CURLOPT_COOKIELIST, $cookie );
}
/**
* Sets request method.
*
* @access public
* @param string $method Request method.
*/
public function setRequestMethod( $request_method )
{
if ($request_method === "GET") {
$this->setOpt( CURLOPT_HTTPGET, true );
}
$this->setOpt( CURLOPT_CUSTOMREQUEST, $request_method );
}
// }}}
// }}}
// ------------------------------------------------------------------------------------------------
// {{{ Private Setters
/**
* Adds response header to response header array for current request.
*
* @access private
* @param resource $ch cURL handle.
* @param string $header response header.
* @return integer response header length.
*/
public function setResponseHeader( $ch, $header )
{
if (trim( $header ) !== "") {
$this->response_headers[] = trim( $header );
}
return mb_strlen( $header );
}
// }}}
}