Socks

[varan]

Socks

Кто-нибудь юзал SOCKS?
Как через сокс сервер давать HTTP-запросы?
Желательно, подробно, но буду рад и примерному алгоритму.

 

[Vladimirovich]

RFC 1928 (описание протокола SOCKS5)
там все элементарно, есть на русском - ищи

 

[tony2001]

varan:
имхо точно так же, только в fsockopen ты шлешь на хост с СОКС, а не на хост, с которого что-то запрашиваешь. СОКС уже форвардит запрос и тебе дает ответ.

 

[slach]

поищи в поиске...
я в этом форуме публиковал готовый код...
для HTTP запроса через fsockopen с поддержкой
HTTPS\HTTP\SOCKS4\4a\5 проксей

 

[varan]

Искал, но на слово socks ни фига не выводит, кроме этого обсуждения.

 

[slach]

ухх...
таки оно меня несколько устало

=========curl.lib.php==============

<?
/**
* http request with fsockopen lib
* (c) anight 2001
* (c) Slach 2002 - added socks,https proxy support with authentification
* [@Usage:] 
*  http_resuest(array('url'=>'http://www.ru','ref'=>'http://referer','proxy'=>''socks4a://user@ipaddres'));
*/
 function http_request($task) {
  $url = $task['url'];
  $cookies = $task['cookies'];
  $method = $task['method'] ? $task['method'] : "GET";
  $postvars = $task['postvars'];
  $ref = $task['ref'];
  $proxy = $task['proxy'];
  $ua = $task['ua'];
  $al = $task['al'];
  $realm = $task['realm'];
  $compress = $task['compress'];
  $conn = ($proxy) ? parse_url($proxy) : parse_url($url);
  $url_p = parse_url($url);

  $fp = fsockopen($conn['host'], $conn['port'] ? $conn['port'] : 80, $errno, $errstr, 15);
  if (!$fp) {
   return array("Error: $errstr");
  }
  set_socket_blocking($fp, true);
  socket_set_timeout ($fp, 15);
  $c = "";
  if (is_array($cookies)) {
   reset($cookies);
   while (list($k, $v) = each($cookies)) $c .= ($c ? "; " : "") . urlencode($k) . "=" . urlencode($v);
  }
  $p = "";
  if (is_array($postvars)) {
   reset($postvars);
   while (list($k, $v) = each($postvars)) $p .= ($p ? "&" : "") . urlencode($k) . "=" . urlencode($v);
  }

  $s = $method . " " . $url . " HTTP/1.0\r\n";
  $s .= "Accept: */*\r\n";

  $compress ? ($s .= "Accept-Encoding: gzip, deflate\r\n") : 0;
  $al ? ($s .= "Accept-Language: $al\r\n") : 0;

  //ЁрсюЄр ё PROXY
  if ($proxy) {
   $conn['scheme']=strtolower($conn['scheme']);
   switch ($conn['scheme']) {
    case 'socks4':
    case 'socks4a':
	$str = "\04\01".($url_p['port'] ? pack('n',intval($url_p['port'])) : "\00\x50");
	if ($conn['scheme']=='socks4a') $str .= "\00\00\00\01\00$url_p[host]\00";
	else {
		$ip = gethostbyname($url_p['host']);
		if ($ip == $url_p['host']) return array('Error: cannot resolve ip: '.$url_p['host']);
        	foreach (explode (".", $ip) as $v) $str .= chr($v);
		$str .= "\00";
	}
	fputs ($fp, $str);
	$str = fread ($fp, 8);
	if ($str == '') return array('Error: connection timeout.');
	if ($str[0] != "\00") return array('Error: proxy connection error.');
        $errors = array ('', 'Request rejected or failed', 'Cannot connect to identd on the client', 'identd report different user-ids');
        $code = ord($str[1]);
	if ($code>90) return array('Error: '.$errors[$code-90]);
     break;
    case 'socks5':
	$str = $conn['user'] ? "\05\02\00\02" : "\05\01\00";
	fputs ($fp, $str);
        $str = fread ($fp, 2);
	if ($str == '' || $str[0] != "\05") return array('Error: invalid proxy type '.$conn['scheme']);
        if ($str == "\05\02") {
		$str = "\01".chr(strlen($conn['user'])).$conn['user'].chr(strlen($conn['pass'])).$conn['pass'];
		fputs ($fp, $str);
        	$str = fread ($fp, 2);
        	if ($str != "\01\00") return array('Error: authentication error '.$conn['scheme']);
	} elseif ($str != "\05\00") {
		return array('Error: authentication error '.$conn['scheme']);
	}
        $str = "\05\01\00\03".chr(strlen($url_p['host'])).$url_p['host'].($url_p['port'] ? pack('n',intval($url_p['port'])) : "\00\x50");
        fputs($fp, $str);
        $errors = array ('', 'general SOCKS server failure', 'connection not allowed by ruleset',
			'network unreacheble', 'host unreacheble', 'connection refused', 'TTL expired',
			'command not supported', 'address type not supported', "to X'FF' unassigned");
        $head = fread ($fp, 5);
	$code = ord($head[1]);

	if ($code) return array('Error: '.$errors[$code]);
        $lengths = array (0, 3, 0, ord($head[4]), 5);
	$len = $lengths[ord($head[3])];
	if (!$len) return array('Error: address type not supported');
        $head .= $tail = fread($fp, $len+2);
     break;

    case 'https':
	$s = 'CONNECT '.$url_p['host'].':'.($url_p['port'] ?  $url_p['port'] : '80')." HTTP/1.0\r\n".$s;
        if ($conn['user'] && $proxy) $s.= 'Proxy-authorization: Basic '.base64_encode($conn['user'].":".$conn['pass'])."\r\n";
     break;

    case 'http':
    default:
     $proxy ? ($s .= "Proxy-Connection: close\r\n") : 0;
     if ($conn['user'] && $proxy) $s.= 'Proxy-authorization: Basic '.base64_encode($conn['user'].":".$conn['pass'])."\r\n";
     break;
   }
  }

  if ($url_p['user']) $s.= 'Authorization: '.($realm ? $realm : 'Basic').' '.base64_encode($url_p['user'].":".$url_p['pass'])."\r\n";
  $method == "POST" ? ($s .= "Content-Length: " . strlen($p) . "\r\n") : 0;
  $method == "POST" ? ($s .= "Content-Type: application/x-www-form-urlencoded\r\n") : 0;
  $c ? ($s .= "Cookie: $c\r\n") : 0;
  $s .= 'Host: '.$url_p['host'].($url_p['port'] ? ':'.$url_p['port'] : '')."\r\n";
  $ref ? ($s .= "Referer: $ref\r\n") : 0;
  $ua ? ($s .= "User-Agent: $ua\r\n") : 0;
  $s .= "\r\n";
  $method == "POST" ? $s .= $p : 0;

  fputs($fp, $s);
  $heads = true;
  unset($h); unset($b);
  while (!feof($fp)) {
   $line = fgets($fp, 4098);

   if ($heads && (!$line || $line == "\r\n" || $line == "\r" || $line == "\n")) { $heads=false; unset($line); }

   if ($heads) $h[] = $line;
   elseif (isset($line)) $b[] = $line;
//   elseif ($line != "\r\n" && $line != "\r" && $line != "\n" && $line) $b[] = $line;
  }
  fclose($fp);
  return array($h, $b);
 }

 function check_url($url) {
  $urlArray = parse_url($url);
  if ($urlArray['scheme']=='ftp') {
     $host = $urlArray['host']; $user = $urlArray['user']; $pass = $urlArray['pass'];
     if ($user == '') { $user='anonymous'; $pass='anonymous@'; }
     $ftp = ftp_connect($host);
     if ($ftp && ftp_login($ftp, $user, $pass)) {
       $buff = ftp_nlist($ftp, $urlArray['path']);
       if ($buff[0]!="") {
        return true;
       } else { return false;}
     } else { return false;}
  }
  if ($urlArray['scheme']=='http') {
    if (!$urlArray['port']) $urlArray['port'] =  "80";
    if (!$urlArray['path']) $urlArray['path'] =  "/";
    $sock = fsockopen($urlArray['host'], $urlArray['port'], &$errnum, &$errstr);
    if (!$sock) return false;
    else {
       $dump .=  "GET $urlArray[path] HTTP/1.0\r\n";
       $dump .=  "Host: $urlArray[host]\r\nConnection: close\r\n";
       $dump .=  "Connection: close\r\n\r\n";
       fputs($sock, $dump);
       while ($str = fgets($sock, 1024)) {
          if (eregi("^http/[0-9]+.[0-9]+ ([0-9]{3}) [a-z ]*", $str))
            $result[code] = trim(eregi_replace("^http/[0-9]+.[0-9]+ ([0-9]{3}) [a-z ]*",  "\\1", $str));
          if (eregi("^Content-Type: ", $str))
            $result[contentType] = trim(eregi_replace("^Content-Type: ",  "", $str));
       }
       fclose($sock);
       flush();
    }
  } else $result[code] = "N/A";
  return $result;

 }
?>

 

[slach]

хыхы... упс... в нагрузку даже чуток лишнего запостил