Services/WebServices/Curl/classes/class.ilCurlConnection.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

include_once('Services/WebServices/Curl/classes/class.ilCurlConnectionException.php');

class ilCurlConnection
{
        protected $url = '';
        protected $ch = null;

        public function __construct($a_url = '')
        {
                $this->url = $a_url;
                
                if(!self::_isCurlExtensionLoaded())
                {
                        throw new ilCurlConnectionException('Curl extension not enabled.');
                }
        }
        
        public static final function _isCurlExtensionLoaded()
        {
                if(!function_exists('curl_init'))
                {
                        return false;
                }
                return true;
        }
        
        public final function init()
        {
                if(strlen($this->url))
                {
                        $this->ch = curl_init($this->url);
                }
                else
                {
                        $this->ch = curl_init();
                }
                if(!$this->ch)
                {
                        throw new ilCurlConnectionException('Cannot init curl connection.');
                }
                if(curl_errno($this->ch))
                {
                        throw new ilCurlConnectionException(curl_error($this->ch),curl_errno($this->ch));
                }
                
                return true;
        }
        
        public final function setOpt($a_option,$a_value)
        {
                if(!@curl_setopt($this->ch,$a_option,$a_value))
                {
                        throw new ilCurlConnectionException('Invalid option given for: '.$a_option,curl_errno($this->ch));
                }
                return true;
        }
        
        public final function exec()
        {
                if((@$res = curl_exec($this->ch)) === false)
                {
                        if(strlen($err = curl_error($this->ch)))
                        {
                                throw new ilCurlConnectionException($err,curl_errno($this->ch));
                        }
                        else
                        {
                                throw new ilCurlConnectionException('Error calling curl_exec().');
                        }
                }
                return $res;
        }
        
        public final function close()
        {
                if($this->ch != null)
                {
                        curl_close($this->ch);
                }
        }
        
        public function __destruct()
        {
                $this->close();
        }
}

?>