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   1  <?php
   2           /*********************************************************\

   3          ******               bblocked HTTP Class               ******

   4         *****                                                     *****

   5        ****               Copyleft (C) 2007  bblocked               ****

   6       ***                                                             ***

   7      **  This program is free software; you can redistribute it and/or  **

   8     **   modify it under the terms of the GNU General Public License     **

   9    **    as published by the Free Software Foundation; either version 2   **

  10   **     of the License, or (at your option) any later version.            **

  11   **                                                                       **

  12   **     This program is distributed in the hope that it will be useful,   **

  13    **    but WITHOUT ANY WARRANTY; without even the implied warranty of   **

  14     **   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   **

  15      **  GNU General Public License for more details.                   **

  16       ***                                                             ***

  17        ****                                                         ****

  18         ****               http://www.bblocked.org/               *****

  19          ******                                                 ******

  20           \*********************************************************/
  21  
  22  require ('base.php');
  23  
  24  
  25  // Extend bblocked Proxy class for HTTP support

  26  
  27  class HTTP extends Proxy {
  28  
  29  	function HTTP($url=false) {
  30          
  31          $this->_method = strtoupper($_SERVER['REQUEST_METHOD'] ? $_SERVER['REQUEST_METHOD'] : 'GET');
  32          
  33          if(!($url ? $this->url_parse($url, $this->_url) : is_array($this->_url)))
  34              die('Could not parse URL.');
  35          
  36          if((bool)$GLOBALS['_config']['enable_cache'] === true) {
  37          
  38               if($this->read_cache($data) == true)
  39                  $this->parse_response("HTTP/1.1 200 OK\r\n" . $data, false);
  40              
  41              else if($this->send_http_request($data))
  42                  $this->parse_response($data, true);
  43                  
  44              else
  45                  report_errors($this->_url, 'connection', 'general');
  46              
  47              $this->output_page();
  48          }
  49          
  50          else {
  51          
  52              if($this->send_http_request($data))
  53                  $this->parse_response($data, false) !== false ? $this->output_page() : '';
  54          }
  55      }
  56      
  57  	function send_http_request(&$output) {
  58      
  59          if($GLOBALS['_config']['proxy_enable']) {
  60          
  61              $host = $GLOBALS['_config']['proxy_host'];
  62              $port = $GLOBALS['_config']['proxy_port'];
  63          }
  64          
  65          else {
  66          
  67              $host = $this->_url['host'];
  68              $port = $this->_url['port'];
  69          }
  70          
  71          if(false === ($this->_socket = @fsockopen(($this->_url['scheme'] === 'https' && $GLOBALS['_config']['ssl'] ? 'ssl://' : 'tcp://') . $this->_url['host'], $port, $errno, $errstr, 30))) {
  72              
  73              if($GLOBALS['_config']['search_keywords'] && gethostbyname($this->_url['host']) == $this->_url['host'])
  74                  $this->HTTP(str_replace('*', urlencode(rtrim(str_replace('http://', '', $this->_url['full']), '/')), $GLOBALS['_config']['keyword_url']));
  75              
  76              else
  77                  report_errors($this->_url, 'connection', 'http_notfound');
  78              
  79              return false;
  80          }
  81          
  82          $headers = $this->_method . ' ' . $this->_url['path'];
  83          
  84          if(isset($this->_url['query'])) {
  85          
  86              $headers .= '?';
  87              $query = preg_split("'([&;])'", $this->_url['query'], -1, PREG_SPLIT_DELIM_CAPTURE);
  88              for($i = 0, $count = count($query); $i < $count; $headers .= implode('=', array_map('urlencode', array_map('urldecode', explode('=', $query[$i])))) . (isset($query[++$i]) ? $query[$i] : ''), $i++);
  89          }
  90          
  91          $headers .= " HTTP/1.0\r\n";
  92          $headers .= "Host: {$this->_url['host']}{$this->_url['port_ext']}\r\n";
  93          $headers .= 'User-Agent: ' . ($GLOBALS['_config']['user_agent'] ? $GLOBALS['_config']['user_agent'] : ($_SERVER['HTTP_USER_AGENT'] ? $_SERVER['HTTP_USER_AGENT'] : 'Mozilla/5.0 (' . PHP_OS . '; en-US; +http://www.bblocked.org/) ' . $GLOBALS['_config']['bblocked_ver_full'])) . "\r\n";
  94          $headers .= 'Accept: ' . (isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : '*/*;q=0.1') . "\r\n";

  95          

  96          if(isset($_SERVER['HTTP_ACCEPT_CHARSET']))

  97              $headers .= "Accept-Charset: {$_SERVER['HTTP_ACCEPT_CHARSET']}\r\n";

  98          

  99          if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))

 100              $headers .= "Accept-Language: {$_SERVER['HTTP_ACCEPT_LANGUAGE']}\r\n";

 101          

 102          if(isset($_SERVER['HTTP_IF_MODIFIED_SINCE']))

 103              $headers .= "If-Modified-Since: {$_SERVER['HTTP_IF_MODIFIED_SINCE']}\r\n";

 104          

 105          if(!$GLOBALS['_config']['remove_referer'] && isset($_SERVER['HTTP_REFERER']) && preg_match("'\Q" . $GLOBALS['_config']['script_url'] . "?\E.*?\Q" . $GLOBALS['_config']['arg_url'] . "=\E([^&]*)'", $_SERVER['HTTP_REFERER'], $matches))

 106              $headers .= 'Referer: ' . decode_url($matches[1]) . "\r\n";

 107          

 108          if(!empty($_COOKIE)) {

 109          

 110              $cookie = '';

 111              $auth = array();

 112          

 113              foreach($_COOKIE as $cookie_id=>$cookie_content) {

 114              

 115                  $cookie_id        = explode(';', rawurldecode($cookie_id));

 116                  $cookie_content    = explode(';', rawurldecode($cookie_content[0]));

 117                  

 118                  if($cookie_id[0] === 'COOKIE') {

 119                  

 120                      $cookie_id[3] = str_replace('_', '.', $cookie_id[3]);

 121          

 122                      if(count($cookie_id) < 4 || ($cookie_content[1] == 'secure' && $this->_url['scheme'] != 'https'))

 123                          continue;

 124          

 125                      if((preg_match("'\Q" . $cookie_id[3] . "\E$'i", $this->_url['host']) || strtolower($cookie_id[3]) == strtolower('.' . $this->_url['host'])) && preg_match("'^\Q" . $cookie_id[2] . "\E'", $this->_url['path']))

 126                          $cookie .= ($cookie != '' ? '; ' : '') . (empty($cookie_id[1]) ? '' : $cookie_id[1] . '=') . $cookie_content[0];

 127                  }

 128              }

 129          }

 130          

 131          if(!empty($_SESSION['data']['cookies'])) {

 132          

 133              foreach($_SESSION['data']['cookies'] as $cookie_id=>$cookie_content) {

 134              

 135                  $cookie_id        = explode(';', unserialize($cookie_id));

 136                  $cookie_content    = explode(';', unserialize($cookie_content));

 137                  

 138                  $cookie_id[2] = str_replace('_', '.', $cookie_id[2]);

 139                  

 140                  if(count($cookie_id) < 3 || ($cookie_content[1] == 'secure' && $this->_url['scheme'] != 'https'))

 141                      continue;

 142  

 143                  if((preg_match("'\Q" . $cookie_id[2] . "\E$'i", $this->_url['host']) || strtolower($cookie_id[2]) == strtolower('.' . $this->_url['host'])) && preg_match("'^\Q" . $cookie_id[1] . "\E'", $this->_url['path']))

 144                      $cookie .= ($cookie != '' ? '; ' : '') . (empty($cookie_id[0]) ? '' : $cookie_id[0] . '=') . $cookie_content[0];

 145              }

 146          }

 147          

 148          if(!empty($_SESSION['data']['auth'])) {

 149          

 150              foreach($_SESSION['data']['auth'] as $auth_id=>$auth_content) {

 151              

 152                  $auth_id        = explode(';', unserialize($auth_id));

 153                  $auth_content    = explode(';', unserialize($auth_content));

 154                  

 155                  $auth_id[1] = str_replace('_', '.', $auth_id[1]);

 156                  

 157                  if($this->_url['host'] . ':' . $this->_url['port'] === $auth_id[1])

 158                      $this->_auth[$auth_id[0]] = $v;

 159              }

 160          }

 161          

 162          if($cookie != '') {

 163          

 164              $headers .= "Cookie: $cookie\r\n";

 165              $this->_no_cache = true;

 166          }

 167          

 168          if(isset($this->_realm))

 169              $basic_auth_realm = $this->_realm;

 170          

 171          if(isset($_POST[$GLOBALS['_config']['arg_user']], $_POST[$GLOBALS['_config']['arg_pass']])) {

 172          

 173              $basic_auth_realm    = $_POST[$GLOBALS['_config']['arg_realm']];

 174              $basic_auth_header    = base64_encode($_POST[$GLOBALS['_config']['arg_user']] . ':' . $_POST[$GLOBALS['_config']['arg_pass']]);

 175          }

 176          

 177          if(isset($this->_url['user'], $this->_url['pass']))

 178              $basic_auth_header = base64_encode($this->_url['user'] . ':' . $this->_url['pass']);

 179  

 180          if(!empty($basic_auth_header)) {

 181          

 182              $_SESSION['data']['auth']["{$basic_auth_realm};{$this->_url['host']}:{$this->_url['port']}"] = $basic_auth_header;

 183              $headers .= "Authorization: Basic {$basic_auth_header}\r\n";

 184          }

 185          

 186          else if(!empty($basic_auth_realm) && isset($this->_auth[$basic_auth_realm]))

 187              $headers  .= "Authorization: Basic {$this->_auth[$basic_auth_realm]}\r\n";

 188  

 189          else if(list($basic_auth_realm, $basic_auth_header) = each($this->_auth))

 190              $headers .= "Authorization: Basic {$basic_auth_header}\r\n";

 191  

 192          if($this->_method == 'POST') {

 193          

 194              if(!empty($_FILES) && $GLOBALS['_config']['file_uploads']) {

 195              

 196                  $boundary = '----' . md5(uniqid(rand(), true));

 197                  

 198                  foreach(encode_post($_POST) as $k=>$v) {

 199                  

 200                      $post_data .= "--{$boundary}\r\n";

 201                      $post_data .= "Content-Disposition: form-data; name=\"{$k}\"\r\n\r\n";

 202                      $post_data .= urldecode($v) . "\r\n";

 203                  }

 204                  

 205                  foreach(get_post_files($_FILES) as $k=>$info) {

 206                  

 207                      $post_data .= "--{$boundary}\r\n";

 208                      $post_data .= "Content-Disposition: form-data; name=\"{$k}\"; filename=\"{$info['name']}\"\r\n";

 209                      $post_data .= 'content-type: ' . (empty($info['type']) ? 'application/octet-stream' : $info['type']) . "\r\n\r\n";

 210          

 211                      if(is_readable($info['tmp_name']))

 212                          $post_data .= file_get_contents($info['tmp_name']);

 213  

 214  

 215                      $post_data .= "\r\n";

 216                  }

 217                  

 218                  $post_data .= "--{$boundary}--";

 219                  $headers .= "content-type: multipart/form-data; boundary={$boundary}\r\n";

 220                  $headers .= "Content-Length: " . strlen($post_data) . "\r\n\r\n" . $post_data;

 221              }

 222              

 223  

 224              else {

 225              

 226                  foreach(encode_post($_POST) as $k=>$v)

 227                      $post_data .= (!empty($post_data) ? '&' : '') . $k . '=' . $v;

 228                  

 229  

 230                  $headers .= "content-type: application/x-www-form-urlencoded\r\n";

 231                  $headers .= "Content-Length: " . strlen($post_data) . "\r\n\r\n" . $post_data;

 232              }

 233              

 234              $post_data = '';

 235          }

 236          

 237          if(fwrite($this->_socket, $headers . "\r\n") !== false) {

 238  

 239              while(!feof($this->_socket))

 240                  $output .= @fgets($this->_socket, 8192);

 241                  

 242              return true;

 243          }

 244          

 245          return false;

 246      }

 247  }

 248  

 249  ?>