src/anyConfOptions.cpp

   1 /*
   2  *  anytun
   3  *
   4  *  The secure anycast tunneling protocol (satp) defines a protocol used
   5  *  for communication between any combination of unicast and anycast
   6  *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
   7  *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
   8  *  ethernet, ip, arp ...). satp directly includes cryptography and
   9  *  message authentication based on the methodes used by SRTP.  It is
  10  *  intended to deliver a generic, scaleable and secure solution for
  11  *  tunneling and relaying of packets of any protocol.
  12  *
  13  *
  14  *  Copyright (C) 2007-2008 Othmar Gsenger, Erwin Nindl,
  15  *                          Christian Pointner <satp@wirdorange.org>
  16  *
  17  *  This file is part of Anytun.
  18  *
  19  *  Anytun is free software: you can redistribute it and/or modify
  20  *  it under the terms of the GNU General Public License version 3 as
  21  *  published by the Free Software Foundation.
  22  *
  23  *  Anytun is distributed in the hope that it will be useful,
  24  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  *  GNU General Public License for more details.
  27  *
  28  *  You should have received a copy of the GNU General Public License
  29  *  along with anytun.  If not, see <http://www.gnu.org/licenses/>.
  30  */
  31
  32 #include <iostream>
  33 #include <queue>
  34 #include <string>
  35 #include <sstream>
  36
  37 #include "datatypes.h"
  38 #include "anyConfOptions.h"
  39
  40 Options* Options::inst = NULL;
  41 Mutex Options::instMutex;
  42 Options& gOpt = Options::instance();
  43
  44 Options& Options::instance()
  45 {
  46   Lock lock(instMutex);
  47   static instanceCleaner c;
  48   if(!inst)
  49     inst = new Options();
  50
  51   return *inst;
  52 }
  53
  54 Options::Options() : key_(u_int32_t(0)), salt_(u_int32_t(0))
  55 {
  56   progname_ = "anytun-config";
  57   remote_addr_ = "";
  58   remote_port_ = 4444;
  59   seq_window_size_ = 100;
  60   kd_prf_ = "aes-ctr";
  61   mux_ = 0;
  62 }
  63
  64 Options::~Options()
  65 {
  66 }
  67
  68 #define PARSE_BOOL_PARAM(SHORT, LONG, VALUE)             \
  69     else if(str == SHORT || str == LONG)                 \
  70       VALUE = true;
  71
  72 #define PARSE_INVERSE_BOOL_PARAM(SHORT, LONG, VALUE)     \
  73     else if(str == SHORT || str == LONG)                 \
  74       VALUE = false;
  75
  76 #define PARSE_SCALAR_PARAM(SHORT, LONG, VALUE)           \
  77     else if(str == SHORT || str == LONG)                 \
  78     {                                                    \
  79       if(argc < 1 || argv[i+1][0] == '-')                \
  80         return false;                                    \
  81       std::stringstream tmp;                             \
  82       tmp << argv[i+1];                                  \
  83       tmp >> VALUE;                                      \
  84       argc--;                                            \
  85       i++;                                               \
  86     }
  87
  88 #define PARSE_SCALAR_PARAM2(SHORT, LONG, VALUE1, VALUE2) \
  89     else if(str == SHORT || str == LONG)                 \
  90     {                                                    \
  91       if(argc < 2 ||                                     \
  92          argv[i+1][0] == '-' || argv[i+2][0] == '-')     \
  93         return false;                                    \
  94       std::stringstream tmp;                             \
  95       tmp << argv[i+1] << " " << argv[i+2];              \
  96       tmp >> VALUE1;                                     \
  97       tmp >> VALUE2;                                     \
  98       argc-=2;                                           \
  99       i+=2;                                              \
 100     }
 101
 102 #define PARSE_HEXSTRING_PARAM_SEC(SHORT, LONG, VALUE)    \
 103     else if(str == SHORT || str == LONG)                 \
 104     {                                                    \
 105       if(argc < 1 || argv[i+1][0] == '-')                \
 106         return false;                                    \
 107       VALUE = Buffer(std::string(argv[i+1]));            \
 108       for(size_t j=0; j < strlen(argv[i+1]); ++j)        \
 109         argv[i+1][j] = '#';                              \
 110       argc--;                                            \
 111       i++;                                               \
 112     }
 113
 114 #define PARSE_CSLIST_PARAM(SHORT, LONG, LIST)            \
 115     else if(str == SHORT || str == LONG)                 \
 116     {                                                    \
 117       if(argc < 1 || argv[i+1][0] == '-')                \
 118         return false;                                    \
 119       std::stringstream tmp(argv[i+1]);                  \
 120                         while (tmp.good())                                 \
 121                         {                                                  \
 122                                 std::string tmp_line;                            \
 123                                 getline(tmp,tmp_line,',');                       \
 124                                 LIST.push(tmp_line);                             \
 125                         }                                                  \
 126       argc--;                                            \
 127       i++;                                               \
 128     }
 129
 130 bool Options::parse(int argc, char* argv[])
 131 {
 132   Lock lock(mutex);
 133
 134   progname_ = argv[0];
 135   argc--;
 136   std::queue<std::string> route_queue;
 137   for(int i=1; argc > 0; ++i)
 138   {
 139     std::string str(argv[i]);
 140     argc--;
 141
 142     if(str == "-h" || str == "--help")
 143       return false;
 144     PARSE_SCALAR_PARAM("-r","--remote-host", remote_addr_)
 145     PARSE_SCALAR_PARAM("-o","--remote-port", remote_port_)
 146     PARSE_SCALAR_PARAM("-w","--window-size", seq_window_size_)
 147     PARSE_SCALAR_PARAM("-m","--mux", mux_)
 148     PARSE_HEXSTRING_PARAM_SEC("-K","--key", key_)
 149     PARSE_HEXSTRING_PARAM_SEC("-A","--salt", salt_)
 150     PARSE_SCALAR_PARAM("-k","--kd-prf", kd_prf_)
 151     PARSE_CSLIST_PARAM("-R","--route", route_queue)
 152     else
 153       return false;
 154   }
 155
 156         while(!route_queue.empty())
 157         {
 158                 std::stringstream tmp_stream(route_queue.front());
 159                 OptionRoute rt;
 160                 getline(tmp_stream,rt.net_addr,'/');
 161                 if(!tmp_stream.good())
 162                         return false;
 163                 tmp_stream >> rt.prefix_length;
 164                 route_queue.pop();
 165                 routes_.push_back(rt);
 166         }
 167   return true;
 168 }
 169
 170 void Options::printUsage()
 171 {
 172   std::cout << "USAGE:" << std::endl;
 173   std::cout << "anytun-config [-h|--help]                         prints this..." << std::endl;
 174   std::cout << "              [-r|--remote-host] <hostname|ip>    remote host" << std::endl;
 175   std::cout << "              [-o|--remote-port] <port>           remote port" << std::endl;
 176   std::cout << "              [-w|--window-size] <window size>    seqence number window size" << std::endl;
 177   std::cout << "              [-m|--mux] <mux-id>                 the multiplex id to use" << std::endl;
 178   std::cout << "              [-K|--key] <master key>             master key to use for encryption" << std::endl;
 179   std::cout << "              [-A|--salt] <master salt>           master salt to use for encryption" << std::endl;
 180 //  std::cout << "              [-k|--kd-prf] <kd-prf type>         key derivation pseudo random function" << std::endl;
 181   std::cout << "              [-R|--route] <net>/<prefix length>  add a route to connection, can be invoked several times" << std::endl;
 182 }
 183
 184 void Options::printOptions()
 185 {
 186   Lock lock(mutex);
 187   std::cout << "Options:" << std::endl;
 188   std::cout << "remote_addr='" << remote_addr_ << "'" << std::endl;
 189   std::cout << "remote_port='" << remote_port_ << "'" << std::endl;
 190   std::cout << "seq_window_size='" << seq_window_size_ << "'" << std::endl;
 191   std::cout << "mux_id='" << mux_ << "'" << std::endl;
 192   std::cout << "key=" << key_.getHexDumpOneLine() << std::endl;
 193   std::cout << "salt=" << salt_.getHexDumpOneLine() << std::endl;
 194   std::cout << "kd_prf='" << kd_prf_ << "'" << std::endl;
 195
 196   std::cout << "routes:" << std::endl;
 197   RouteList::const_iterator rit;
 198   for(rit = routes_.begin(); rit != routes_.end(); ++rit)
 199     std::cout << "  " << rit->net_addr << "/" << rit->prefix_length << std::endl;
 200 }
 201
 202 std::string Options::getProgname()
 203 {
 204   Lock lock(mutex);
 205   return progname_;
 206 }
 207
 208
 209 Options& Options::setProgname(std::string p)
 210 {
 211   Lock lock(mutex);
 212   progname_ = p;
 213   return *this;
 214 }
 215
 216
 217 std::string Options::getRemoteAddr()
 218 {
 219   Lock lock(mutex);
 220   return remote_addr_;
 221 }
 222
 223 Options& Options::setRemoteAddr(std::string r)
 224 {
 225   Lock lock(mutex);
 226   remote_addr_ = r;
 227   return *this;
 228 }
 229
 230 u_int16_t Options::getRemotePort()
 231 {
 232   return remote_port_;
 233 }
 234
 235 Options& Options::setRemotePort(u_int16_t r)
 236 {
 237   remote_port_ = r;
 238   return *this;
 239 }
 240
 241 Options& Options::setRemoteAddrPort(std::string addr, u_int16_t port)
 242 {
 243   Lock lock(mutex);
 244   remote_addr_ = addr;
 245   remote_port_ = port;
 246   return *this;
 247 }
 248
 249 window_size_t Options::getSeqWindowSize()
 250 {
 251   return seq_window_size_;
 252 }
 253
 254 Options& Options::setSeqWindowSize(window_size_t s)
 255 {
 256   seq_window_size_ = s;
 257   return *this;
 258 }
 259
 260
 261 std::string Options::getKdPrf()
 262 {
 263   Lock lock(mutex);
 264   return kd_prf_;
 265 }
 266
 267 Options& Options::setKdPrf(std::string k)
 268 {
 269   Lock lock(mutex);
 270   kd_prf_ = k;
 271   return *this;
 272 }
 273
 274 u_int16_t Options::getMux()
 275 {
 276   Lock lock(mutex);
 277   return mux_;
 278 }
 279
 280 Options& Options::setMux(u_int16_t m)
 281 {
 282   Lock lock(mutex);
 283   mux_ = m;
 284   return *this;
 285 }
 286
 287 Buffer Options::getKey()
 288 {
 289   Lock lock(mutex);
 290   return key_;
 291 }
 292
 293 Options& Options::setKey(std::string k)
 294 {
 295   Lock lock(mutex);
 296   key_ = k;
 297   return *this;
 298 }
 299
 300 Buffer Options::getSalt()
 301 {
 302   Lock lock(mutex);
 303   return salt_;
 304 }
 305
 306 Options& Options::setSalt(std::string s)
 307 {
 308   Lock lock(mutex);
 309   salt_ = s;
 310   return *this;
 311 }
 312
 313 RouteList Options::getRoutes()
 314 {
 315   Lock lock(mutex);
 316         return routes_;
 317 }