/01.Source/01.CORE/includes/class/geturl.class.php

<?php



/**

 * @Project NUKEVIET 3.0

 * @Author VINADES., JSC (contact@vinades.vn)

 * @Copyright (C) 2010 VINADES., JSC. All rights reserved

 * @Createdate 5-8-2010  1:13

 */



/**

 * Get data from file as a URL

 * 

 * @package NUKEVIET 3.0

 * @author VINADES., JSC

 * @copyright 2010

 * @version $Id$

 * @access public

 */

class UrlGetContents

{



    private $allow_methods = array();



    private $safe_mode;



    private $open_basedir;



    private $url_info = false;



    private $login = '';



    private $password = '';



    private $ref = '';



    private $user_agent = '';



    /**

     * UrlGetContents::__construct()

     * 

     * @return

     */

    function __construct ( $global_config )

    {

        $this->user_agent = 'NUKEVIET CMS ' . $global_config['version'] . '. Developed by VINADES. Url: http://nukeviet.vn. Code: ' . md5( $global_config['sitekey'] );

        

        $disable_functions = ( ini_get( "disable_functions" ) != "" and ini_get( "disable_functions" ) != false ) ? array_map( 'trim', preg_split( "/[\s,]+/", ini_get( "disable_functions" ) ) ) : array();

        $safe_mode = ( ini_get( 'safe_mode' ) == '1' || strtolower( ini_get( 'safe_mode' ) ) == 'on' ) ? 1 : 0;

        

        if ( ! $safe_mode and function_exists( 'set_time_limit' ) and ! in_array( 'set_time_limit', $disable_functions ) )

        {

            set_time_limit( 0 );

        }

        

        if ( function_exists( 'ini_set' ) and ! in_array( 'ini_set', $disable_functions ) )

        {

            ini_set( 'allow_url_fopen', 1 );

            ini_set( 'default_socket_timeout', 120 );

            $memoryLimitMB = ( integer )ini_get( 'memory_limit' );

            if ( $memoryLimitMB < 64 )

            {

                ini_set( "memory_limit", "64M" );

            }

            ini_set( 'user_agent', $this->user_agent );

        }

        

        if ( extension_loaded( 'curl' ) )

        {

            $curl_functions = array( 

                'curl_init', 'curl_setopt', 'curl_exec', 'curl_errno', 'curl_close', 'curl_getinfo' 

            );

            $is_enable = true;

            foreach ( $curl_functions as $function )

            {

                if ( ! function_exists( $function ) )

                {

                    $is_enable = false;

                    break;

                }

                

                if ( ! empty( $disable_functions ) and in_array( $function, $disable_functions ) )

                {

                    $is_enable = false;

                    break;

                }

            }

            

            if ( $is_enable )

            {

                $this->allow_methods[] = 'curl';

            }

        }

        

        if ( function_exists( "fsockopen" ) and ! in_array( 'fsockopen', $disable_functions ) )

        {

            $this->allow_methods[] = 'fsockopen';

        }

        

        if ( ini_get( 'allow_url_fopen' ) == '1' or strtolower( ini_get( 'allow_url_fopen' ) ) == 'on' )

        {

            if ( function_exists( "fopen" ) and ! in_array( 'fopen', $disable_functions ) )

            {

                $this->allow_methods[] = 'fopen';

            }

            

            if ( function_exists( "file_get_contents" ) and ! in_array( 'file_get_contents', $disable_functions ) )

            {

                $this->allow_methods[] = 'file_get_contents';

            }

        }

        

        if ( function_exists( "file" ) and ! in_array( 'file', $disable_functions ) )

        {

            $this->allow_methods[] = 'file';

        }

        

        if ( ini_get( 'safe_mode' ) == '1' || strtolower( ini_get( 'safe_mode' ) ) == 'on' )

        {

            $this->safe_mode = true;

        }

        else

        {

            $this->safe_mode = false;

        }

        

        if ( ini_get( 'open_basedir' ) == '1' || strtolower( ini_get( 'open_basedir' ) ) == 'on' )

        {

            $this->open_basedir = true;

        }

        else

        {

            $this->open_basedir = false;

        }

    }



    /**

     * UrlGetContents::curl_Get()

     * 

     * @param mixed $url

     * @param string $login

     * @param string $password

     * @param string $ref

     * @return

     */

    private function curl_Get ( )

    {

        $curlHandle = curl_init();

        curl_setopt( $curlHandle, CURLOPT_ENCODING, '' );

        curl_setopt( $curlHandle, CURLOPT_URL, $this->url_info['uri'] );

        curl_setopt( $curlHandle, CURLOPT_HEADER, 0 );

        curl_setopt( $curlHandle, CURLOPT_RETURNTRANSFER, 1 );

        

        if ( ! empty( $this->login ) )

        {

            curl_setopt( $curlHandle, CURLOPT_HTTPAUTH, CURLAUTH_BASIC );

            curl_setopt( CURLOPT_USERPWD, '[' . $this->login . ']:[' . $this->password . ']' );

        }

        

        curl_setopt( $curlHandle, CURLOPT_USERAGENT, $this->user_agent );

        

        if ( ! empty( $this->ref ) )

        {

            curl_setopt( $curlHandle, CURLOPT_REFERER, urlencode( $this->ref ) );

        }

        else

        {

            curl_setopt( $curlHandle, CURLOPT_REFERER, $this->url_info['uri'] );

        }

        

        if ( ! $this->safe_mode and $this->open_basedir )

        {

            curl_setopt( $curlHandle, CURLOPT_FOLLOWLOCATION, 1 );

            curl_setopt( $curlHandle, CURLOPT_MAXREDIRS, 10 );

        }

        

        curl_setopt( $curlHandle, CURLOPT_TIMEOUT, 30 );

        

        $result = curl_exec( $curlHandle );

        

        if ( curl_errno( $curlHandle ) == 23 || curl_errno( $curlHandle ) == 61 )

        {

            curl_setopt( $curlHandle, CURLOPT_ENCODING, 'none' );

            $result = curl_exec( $curlHandle );

        }

        

        if ( curl_errno( $curlHandle ) )

        {

            curl_close( $curlHandle );

            return false;

        }

        

        $response = curl_getinfo( $curlHandle );

        if ( ( $response['http_code'] < 200 ) || ( 300 <= $response['http_code'] ) )

        {

            curl_close( $curlHandle );

            return false;

        }

        

        curl_close( $curlHandle );

        

        return $result;

    }



    /**

     * UrlGetContents::fsockopen_Get()

     * 

     * @param mixed $url

     * @param string $login

     * @param string $password

     * @param string $ref

     * @return

     */

    private function fsockopen_Get ( )

    {

        if ( strtolower( $this->url_info['scheme'] ) == 'https' )

        {

            $this->url_info['host'] = "ssl://" . $this->url_info['host'];

            $this->url_info['port'] = 443;

        }

        

        $fp = @fsockopen( $this->url_info['host'], $this->url_info['port'], $errno, $errstr, 30 );

        if ( ! $fp )

        {

            return false;

        }

        

        $request = "GET " . $this->url_info['path'] . $this->url_info["query"];

        $request .= " HTTP/1.0\r\n";

        $request .= "Host: " . $this->url_info['host'];

        

        if ( $this->url_info['port'] != 80 )

        {

            $request .= ":" . $info['port'];

        }

        $request .= "\r\n";

        

        $request .= "Connection: Close\r\n";

        $request .= "User-Agent: " . $this->user_agent . "\r\n\r\n";

        

        if ( function_exists( 'gzinflate' ) )

        {

            $request .= "Accept-Encoding: gzip,deflate\r\n";

        }

        

        $request .= "Accept: */*\r\n";

        

        if ( ! empty( $this->ref ) )

        {

            $request .= "Referer: " . urlencode( $this->ref ) . "\r\n";

        }

        else

        {

            $request .= "Referer: " . $this->url_info['uri'] . "\r\n";

        }

        

        if ( ! empty( $this->login ) )

        {

            $request .= "Authorization: Basic ";

            $request .= base64_encode( $this->login . ':' . $this->password );

            $request .= "\r\n";

        }

        

        $request .= "\r\n";

        

        if ( @fwrite( $fp, $request ) === false )

        {

            @fclose( $fp );

            return false;

        }

        

        @stream_set_blocking( $fp, true );

        @stream_set_timeout( $fp, 30 );

        $in_f = @stream_get_meta_data( $fp );

        

        $response = "";

        

        while ( ( ! @feof( $fp ) ) && ( ! $in_f['timed_out'] ) )

        {

            $response .= @fgets( $fp, 4096 );

            $inf = @stream_get_meta_data( $fp );

            if ( $inf['timed_out'] )

            {

                @fclose( $fp );

                return false;

            }

        }

        

        if ( function_exists( 'gzinflate' ) and substr( $response, 0, 8 ) == "\x1f\x8b\x08\x00\x00\x00\x00\x00" )

        {

            $response = substr( $response, 10 );

            $response = gzinflate( $response );

        }

        

        @fclose( $fp );

        

        list( $header, $result ) = preg_split( "/\r?\n\r?\n/", $response, 2 );

        unset( $matches );

        preg_match( "/^HTTP\/[0-9\.]+\s+(\d+)\s+/", $header, $matches );

        if ( $matches == array() || $matches[1] != 200 )

        {

            return false;

        }

        

        return $result;

    }



    /**

     * UrlGetContents::fopen_Get()

     * 

     * @param mixed $url

     * @return

     */

    private function fopen_Get ( )

    {

        if ( ( $fd = @fopen( $this->url_info['uri'], "rb" ) ) === false )

        {

            return false;

        }

        

        $result = '';

        while ( ( $data = fread( $fd, 4096 ) ) != "" )

        {

            $result .= $data;

        }

        fclose( $fd );

        

        return $result;

    }



    /**

     * UrlGetContents::file_get_contents_Get()

     * 

     * @param mixed $url

     * @return

     */

    private function file_get_contents_Get ( )

    {

        return file_get_contents( $this->url_info['uri'] );

    }



    /**

     * UrlGetContents::file_Get()

     * 

     * @param mixed $url

     * @return void

     */

    private function file_Get ( )

    {

        $result = file( $this->url_info['uri'] );

        

        if ( $result ) return implode( $result );

        return '';

    }



    /**

     * UrlGetContents::url_get_info()

     * 

     * @param mixed $url

     * @return

     */

    private function url_get_info ( $url )

    {

        //URL: http://username:password@www.example.com:80/dir/page.php?foo=bar&foo2=bar2#bookmark

        $url_info = @parse_url( $url );

        

        //[host] => www.example.com

        if ( ! isset( $url_info['host'] ) )

        {

            return false;

        }

        

        //[port] => :80

        $url_info['port'] = isset( $url_info['port'] ) ? $url_info['port'] : 80;

        

        //[login] => username:password@

        $url_info['login'] = '';

        if ( isset( $url_info['user'] ) )

        {

            $url_info['login'] = $url_info['user'];

            if ( isset( $url_info['pass'] ) )

            {

                $url_info['login'] .= ':' . $url_info['pass'];

            }

            $url_info['login'] .= '@';

        }

        

        //[path] => /dir/page.php

        if ( isset( $url_info['path'] ) )

        {

            if ( substr( $url_info['path'], 0, 1 ) != '/' )

            {

                $url_info['path'] = '/' . $url_info['path'];

            }

        }

        else

        {

            $url_info['path'] = '/';

        }

        

        //[query] => ?foo=bar&foo2=bar2

        $url_info['query'] = ( isset( $url_info['query'] ) and ! empty( $url_info['query'] ) ) ? '?' . $url_info['query'] : '';

        

        //[fragment] => bookmark

        $url_info['fragment'] = isset( $url_info['fragment'] ) ? $url_info['fragment'] : '';

        

        //[file] => page.php

        $url_info['file'] = explode( '/', $url_info['path'] );

        $url_info['file'] = array_pop( $url_info['file'] );

        

        //[dir] => /dir

        $url_info['dir'] = substr( $url_info['path'], 0, strrpos( $url_info['path'], '/' ) );

        

        //[base] => http://www.example.com/dir

        $url_info['base'] = $url_info['scheme'] . '://' . $url_info['host'] . $url_info['dir'];

        

        //[uri] => http://username:password@www.example.com:80/dir/page.php?#bookmark

        $url_info['uri'] = $url_info['scheme'] . '://' . $url_info['login'] . $url_info['host'];

        if ( $url_info['port'] != 80 )

        {

            $url_info['uri'] .= ':' . $url_info['port'];

        }

        $url_info['uri'] .= $url_info['path'] . $url_info['query'];

        /*if ( $url_info['fragment'] != '' )

        {

        $url_info['uri'] .= '#' . $url_info['fragment'];

        }*/

        

        return $url_info;

    }



    /**

     * UrlGetContents::get()

     * 

     * @param mixed $url

     * @param string $login

     * @param string $password

     * @param string $ref

     * @return

     */

    public function get ( $url, $login = '', $password = '', $ref = '' )

    {

        $this->url_info = $this->url_get_info( $url );

        

        if ( ! $this->url_info or ! isset( $this->url_info['scheme'] ) )

        {

            return false;

        }

        

        $this->login = ( string )$login;

        $this->password = ( string )$password;

        $this->ref = ( string )$ref;

        

        if ( ! empty( $this->allow_methods ) )

        {

            foreach ( $this->allow_methods as $method )

            {

                $result = call_user_func( array( 

                    &$this, $method . '_Get' 

                ) );

                

                if ( ! empty( $result ) )

                {

                    return $result;

                    break;

                }

            }

        }

        

        return '';

    }

}



?>