web/Obj/provider_proxy.phh

   1 <?php
   2 /*
   3  *  brisk - Obj/provider_proxy.phh
   4  *
   5  *  Copyright (C) 2015      Matteo Nastasi
   6  *                          mailto: nastasi@alternativeoutput.it
   7  *                                  matteo.nastasi@milug.org
   8  *                          web: http://www.alternativeoutput.it
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABLILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18  * General Public License for more details. You should have received a
  19  * copy of the GNU General Public License along with this program; if
  20  * not, write to the Free Software Foundation, Inc, 59 Temple Place -
  21  * Suite 330, Boston, MA 02111-1307, USA.
  22  *
  23  */
  24
  25 require_once("${G_base}Obj/ipclass.phh");
  26
  27 $G_pproxy = array( "samosa" => array("headitem" => "X-Forwarded-For",
  28                                      "ipclass" => array("107.178.33.0/24",
  29                                                         "107.178.34.0/24",
  30                                                         "107.178.35.0/24",
  31                                                         "107.178.37.0/24",
  32                                                         "107.178.38.0/24",
  33                                                         "107.178.39.0/24",
  34                                                         "107.178.41.0/24",
  35                                                         "107.178.42.0/24",
  36                                                         "107.178.43.0/24",
  37                                                         "107.178.45.0/24",
  38                                                         "107.178.46.0/24",
  39                                                         "107.178.47.0/24",
  40                                                         "206.173.221.0/24") ),
  41                    "mytest" => array("headitem" => "X-Forwarded-For",
  42                                      "ipclass" => array("192.168.2.3/24") )
  43                    );
  44
  45 class ProviderProxyItem
  46 {
  47     var $name;
  48     var $headitem;
  49     var $ipclass;
  50
  51     function ProviderProxyItem($pp_name, $pp_descr)
  52     {
  53         $this->name     = $pp_name;
  54         $this->headitem = $pp_descr['headitem'];
  55         $this->ipclass  = IPClass::create($pp_descr['ipclass']);
  56     }
  57 }
  58
  59
  60 class ProviderProxy
  61 {
  62     var $pp;
  63
  64     function ProviderProxy()
  65     {
  66         $this->pp = NULL;
  67     }
  68
  69     static function create($pproxy = NULL)
  70     {
  71         $thiz = new ProviderProxy();
  72
  73         if ($pproxy != NULL)
  74             $thiz->update($pproxy);
  75
  76         return ($thiz);
  77     }
  78
  79     function clean()
  80     {
  81         if ($this->pp != NULL) {
  82             foreach ($this->pp as $pp_name) {
  83                 unset($this->pp[$pp_name]);
  84             }
  85             unset($this->pp);
  86             $this->pp = NULL;
  87         }
  88     }
  89
  90     function update($pproxy)
  91     {
  92         $this->clean();
  93
  94         $this->pp = array();
  95         foreach ($pproxy as $pp_name => $pp_descr) {
  96             $this->pp[$pp_name] = new ProviderProxyItem($pp_name, $pp_descr);
  97         }
  98     }
  99
 100     function realip($headers, $ip)
 101     {
 102         if ($this->pp != NULL) {
 103             foreach ($this->pp as $pp_name => $pp_item) {
 104                 if ($pp_item->match($ip)) {
 105                     if (isset($headers[$pp_item->headitem])) {
 106                         fprintf(STDERR, "Match public proxy [%s]\n", $pp_name);
 107                         return ($headers[$pp_item->headitem]);
 108                     }
 109                 }
 110             }
 111         }
 112         return ($ip);
 113     }
 114 }
 115
 116 ?>