release/src/router/openvpn/proxy.h

   1 /*
   2  *  OpenVPN -- An application to securely tunnel IP networks
   3  *             over a single TCP/UDP port, with support for SSL/TLS-based
   4  *             session authentication and key exchange,
   5  *             packet encryption, packet authentication, and
   6  *             packet compression.
   7  *
   8  *  Copyright (C) 2002-2009 OpenVPN Technologies, Inc. <sales@openvpn.net>
   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 version 2
  12  *  as published by the Free Software Foundation.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program (see the file COPYING included with this
  21  *  distribution); if not, write to the Free Software Foundation, Inc.,
  22  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #ifndef PROXY_H
  26 #define PROXY_H
  27
  28 #include "buffer.h"
  29 #include "misc.h"
  30
  31 #ifdef GENERAL_PROXY_SUPPORT
  32
  33 /*
  34  * Return value for get_proxy_settings to automatically
  35  * determine proxy information.
  36  */
  37 struct auto_proxy_info_entry {
  38   char *server;
  39   int port;
  40 };
  41
  42 struct auto_proxy_info {
  43   struct auto_proxy_info_entry http;
  44   struct auto_proxy_info_entry socks;
  45 };
  46
  47 struct auto_proxy_info *get_proxy_settings (char **err, struct gc_arena *gc);
  48
  49 #ifdef WIN32
  50 void show_win_proxy_settings (const int msglevel);
  51 #endif /* WIN32 */
  52
  53 #endif /* GENERAL_PROXY_SUPPORT */
  54
  55 #ifdef ENABLE_HTTP_PROXY
  56
  57 /* HTTP CONNECT authentication methods */
  58 #define HTTP_AUTH_NONE  0
  59 #define HTTP_AUTH_BASIC 1
  60 #define HTTP_AUTH_NTLM  2
  61 #define HTTP_AUTH_N     3
  62 #define HTTP_AUTH_NTLM2 4
  63
  64 struct http_proxy_options {
  65   const char *server;
  66   int port;
  67   bool retry;
  68   int timeout;
  69   bool auth_retry;
  70   const char *auth_method_string;
  71   const char *auth_file;
  72   const char *http_version;
  73   const char *user_agent;
  74 };
  75
  76 struct http_proxy_info {
  77   bool defined;
  78   int auth_method;
  79   struct http_proxy_options options;
  80   struct user_pass up;
  81 };
  82
  83 struct http_proxy_info *http_proxy_new (const struct http_proxy_options *o,
  84                                         struct auto_proxy_info *auto_proxy_info);
  85
  86 void http_proxy_close (struct http_proxy_info *hp);
  87
  88 bool establish_http_proxy_passthru (struct http_proxy_info *p,
  89                                     socket_descriptor_t sd, /* already open to proxy */
  90                                     const char *host,       /* openvpn server remote */
  91                                     const int port,         /* openvpn server port */
  92                                     struct buffer *lookahead,
  93                                     volatile int *signal_received);
  94
  95 uint8_t *make_base64_string2 (const uint8_t *str, int str_len, struct gc_arena *gc);
  96 uint8_t *make_base64_string (const uint8_t *str, struct gc_arena *gc);
  97
  98 #endif /* ENABLE_HTTP_PROXY */
  99
 100 #endif /* PROXY_H */