src/anyctrOptions.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 anytun.org <satp@wirdorange.org>
  15  *
  16  *  This program is free software; you can redistribute it and/or modify
  17  *  it under the terms of the GNU General Public License version 2
  18  *  as published by the Free Software Foundation.
  19  *
  20  *  This program is distributed in the hope that it will be useful,
  21  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  *  GNU General Public License for more details.
  24  *
  25  *  You should have received a copy of the GNU General Public License
  26  *  along with this program (see the file COPYING included with this
  27  *  distribution); if not, write to the Free Software Foundation, Inc.,
  28  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  29  */
  30
  31 #include <iostream>
  32 #include <queue>
  33 #include <string>
  34 #include <sstream>
  35
  36 #include "datatypes.h"
  37 #include "anyctrOptions.h"
  38
  39 Options* Options::inst = NULL;
  40 Mutex Options::instMutex;
  41 Options& gOpt = Options::instance();
  42
  43 Options& Options::instance()
  44 {
  45   Lock lock(instMutex);
  46   static instanceCleaner c;
  47   if(!inst)
  48     inst = new Options();
  49
  50   return *inst;
  51 }
  52
  53 Options::Options() : key_(u_int32_t(0)), salt_(u_int32_t(0))
  54 {
  55   progname_ = "anytun-config";
  56   remote_addr_ = "";
  57   remote_port_ = 4444;
  58   ifconfig_param_remote_netmask_ = "255.255.255.0";
  59   seq_window_size_ = 100;
  60   kd_prf_ = "aes-ctr";
  61   mux_ = 0;
  62   network_prefix_length_ = 32;
  63 }
  64
  65 Options::~Options()
  66 {
  67 }
  68
  69 #define PARSE_BOOL_PARAM(SHORT, LONG, VALUE)             \
  70     else if(str == SHORT || str == LONG)                 \
  71       VALUE = true;
  72
  73 #define PARSE_INVERSE_BOOL_PARAM(SHORT, LONG, VALUE)     \
  74     else if(str == SHORT || str == LONG)                 \
  75       VALUE = false;
  76
  77 #define PARSE_SCALAR_PARAM(SHORT, LONG, VALUE)           \
  78     else if(str == SHORT || str == LONG)                 \
  79     {                                                    \
  80       if(argc < 1 || argv[i+1][0] == '-')                \
  81         return false;                                    \
  82       std::stringstream tmp;                             \
  83       tmp << argv[i+1];                                  \
  84       tmp >> VALUE;                                      \
  85       argc--;                                            \
  86       i++;                                               \
  87     }
  88
  89 #define PARSE_SCALAR_PARAM2(SHORT, LONG, VALUE1, VALUE2) \
  90     else if(str == SHORT || str == LONG)                 \
  91     {                                                    \
  92       if(argc < 2 ||                                     \
  93          argv[i+1][0] == '-' || argv[i+2][0] == '-')     \
  94         return false;                                    \
  95       std::stringstream tmp;                             \
  96       tmp << argv[i+1] << " " << argv[i+2];              \
  97       tmp >> VALUE1;                                     \
  98       tmp >> VALUE2;                                     \
  99       argc-=2;                                           \
 100       i+=2;                                              \
 101     }
 102
 103 #define PARSE_HEXSTRING_PARAM_SEC(SHORT, LONG, VALUE)    \
 104     else if(str == SHORT || str == LONG)                 \
 105     {                                                    \
 106       if(argc < 1 || argv[i+1][0] == '-')                \
 107         return false;                                    \
 108       VALUE = Buffer(std::string(argv[i+1]));            \
 109       for(size_t j=0; j < strlen(argv[i+1]); ++j)        \
 110         argv[i+1][j] = '#';                              \
 111       argc--;                                            \
 112       i++;                                               \
 113     }
 114
 115 #define PARSE_CSLIST_PARAM(SHORT, LONG, LIST)            \
 116     else if(str == SHORT || str == LONG)                 \
 117     {                                                    \
 118       if(argc < 1 || argv[i+1][0] == '-')                \
 119         return false;                                    \
 120       std::stringstream tmp(argv[i+1]);                  \
 121                         while (tmp.good())                                 \
 122                         {                                                  \
 123                                 std::string tmp_line;                            \
 124                                 getline(tmp,tmp_line,',');                       \
 125                                 LIST.push(tmp_line);                             \
 126                         }                                                  \
 127       argc--;                                            \
 128       i++;                                               \
 129     }
 130
 131 bool Options::parse(int argc, char* argv[])
 132 {
 133   Lock lock(mutex);
 134
 135   progname_ = argv[0];
 136   argc--;
 137   std::queue<std::string> host_port_queue;
 138   for(int i=1; argc > 0; ++i)
 139   {
 140     std::string str(argv[i]);
 141     argc--;
 142
 143     if(str == "-h" || str == "--help")
 144       return false;
 145     PARSE_SCALAR_PARAM("-r","--remote-host", remote_addr_)
 146     PARSE_SCALAR_PARAM("-o","--remote-port", remote_port_)
 147     PARSE_SCALAR_PARAM("-n","--prefix", ifconfig_param_remote_netmask_)
 148     PARSE_SCALAR_PARAM("-w","--window-size", seq_window_size_)
 149     PARSE_SCALAR_PARAM("-m","--mux", mux_)
 150     PARSE_SCALAR_PARAM("-l","--prefix-len", network_prefix_length_)
 151     PARSE_HEXSTRING_PARAM_SEC("-K","--key", key_)
 152     PARSE_HEXSTRING_PARAM_SEC("-A","--salt", salt_)
 153     PARSE_SCALAR_PARAM("-k","--kd-prf", kd_prf_)
 154     else
 155       return false;
 156   }
 157
 158         while(!host_port_queue.empty())
 159         {
 160                 std::stringstream tmp_stream(host_port_queue.front());
 161                 OptionConnectTo oct;
 162                 getline(tmp_stream,oct.host,':');
 163                 if(!tmp_stream.good())
 164                         return false;
 165                 tmp_stream >> oct.port;
 166                 host_port_queue.pop();
 167                 connect_to_.push_back(oct);
 168         }
 169   return true;
 170 }
 171
 172 void Options::printUsage()
 173 {
 174   std::cout << "USAGE:" << std::endl;
 175   std::cout << "anytun-config" << std::endl;
 176   std::cout << "       [-h|--help]                         prints this..." << std::endl;
 177   std::cout << "       [-r|--remote-host] <hostname|ip>    remote host" << std::endl;
 178   std::cout << "       [-o|--remote-port] <port>           remote port" << std::endl;
 179   std::cout << "       [-n|--prefix] <remote net>          remote subnet for route" << std::endl;
 180   std::cout << "       [-w|--window-size] <window size>    seqence number window size" << std::endl;
 181   std::cout << "       [-m|--mux] <mux-id>                 the multiplex id to use" << std::endl;
 182   std::cout << "       [-l|--prefix-len] <prefix length>   network prefix length" << std::endl;
 183   std::cout << "       [-K|--key] <master key>             master key to use for encryption" << std::endl;
 184   std::cout << "       [-A|--salt] <master salt>           master salt to use for encryption" << std::endl;
 185   std::cout << "       [-k|--kd-prf] <kd-prf type>         key derivation pseudo random function" << std::endl;
 186 }
 187
 188 void Options::printOptions()
 189 {
 190   Lock lock(mutex);
 191   std::cout << "Options:" << std::endl;
 192   std::cout << "remote_addr='" << remote_addr_ << "'" << std::endl;
 193   std::cout << "remote_port='" << remote_port_ << "'" << std::endl;
 194   std::cout << "ifconfig_param_local='" << ifconfig_param_local_ << "'" << std::endl;
 195   std::cout << "ifconfig_param_remote_netmask='" << ifconfig_param_remote_netmask_ << "'" << std::endl;
 196   std::cout << "seq_window_size='" << seq_window_size_ << "'" << std::endl;
 197   std::cout << "mux_id='" << mux_ << "'" << std::endl;
 198   std::cout << "network_prefix_length='" << network_prefix_length_ << "'" << std::endl;
 199   std::cout << "key=" << key_.getHexDumpOneLine() << std::endl;
 200   std::cout << "salt=" << salt_.getHexDumpOneLine() << std::endl;
 201   std::cout << "kd_prf='" << kd_prf_ << "'" << std::endl;
 202 }
 203
 204 std::string Options::getProgname()
 205 {
 206   Lock lock(mutex);
 207   return progname_;
 208 }
 209
 210
 211 Options& Options::setProgname(std::string p)
 212 {
 213   Lock lock(mutex);
 214   progname_ = p;
 215   return *this;
 216 }
 217
 218
 219 std::string Options::getRemoteAddr()
 220 {
 221   Lock lock(mutex);
 222   return remote_addr_;
 223 }
 224
 225 Options& Options::setRemoteAddr(std::string r)
 226 {
 227   Lock lock(mutex);
 228   remote_addr_ = r;
 229   return *this;
 230 }
 231
 232 u_int16_t Options::getRemotePort()
 233 {
 234   return remote_port_;
 235 }
 236
 237 Options& Options::setRemotePort(u_int16_t r)
 238 {
 239   remote_port_ = r;
 240   return *this;
 241 }
 242
 243 Options& Options::setRemoteAddrPort(std::string addr, u_int16_t port)
 244 {
 245   Lock lock(mutex);
 246   remote_addr_ = addr;
 247   remote_port_ = port;
 248   return *this;
 249 }
 250
 251 std::string Options::getIfconfigParamRemoteNetmask()
 252 {
 253   Lock lock(mutex);
 254   return ifconfig_param_remote_netmask_;
 255 }
 256
 257 Options& Options::setIfconfigParamRemoteNetmask(std::string i)
 258 {
 259   Lock lock(mutex);
 260   ifconfig_param_remote_netmask_ = i;
 261   return *this;
 262 }
 263
 264 window_size_t Options::getSeqWindowSize()
 265 {
 266   return seq_window_size_;
 267 }
 268
 269 Options& Options::setSeqWindowSize(window_size_t s)
 270 {
 271   seq_window_size_ = s;
 272   return *this;
 273 }
 274
 275
 276 std::string Options::getKdPrf()
 277 {
 278   Lock lock(mutex);
 279   return kd_prf_;
 280 }
 281
 282 Options& Options::setKdPrf(std::string k)
 283 {
 284   Lock lock(mutex);
 285   kd_prf_ = k;
 286   return *this;
 287 }
 288
 289 u_int16_t Options::getMux()
 290 {
 291   Lock lock(mutex);
 292   return mux_;
 293 }
 294
 295 Options& Options::setMux(u_int16_t m)
 296 {
 297   Lock lock(mutex);
 298   mux_ = m;
 299   return *this;
 300 }
 301
 302 u_int16_t Options::getNetworkPrefixLength()
 303 {
 304   Lock lock(mutex);
 305   return network_prefix_length_;
 306 }
 307
 308 Options& Options::setNetworkPrefixLength(u_int16_t l)
 309 {
 310   Lock lock(mutex);
 311   network_prefix_length_ = l;
 312   return *this;
 313 }
 314
 315 Buffer Options::getKey()
 316 {
 317   Lock lock(mutex);
 318   return key_;
 319 }
 320
 321 Options& Options::setKey(std::string k)
 322 {
 323   Lock lock(mutex);
 324   key_ = k;
 325   return *this;
 326 }
 327
 328 Buffer Options::getSalt()
 329 {
 330   Lock lock(mutex);
 331   return salt_;
 332 }
 333
 334 Options& Options::setSalt(std::string s)
 335 {
 336   Lock lock(mutex);
 337   salt_ = s;
 338   return *this;
 339 }