options.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 "options.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";
  56   daemonize_ = true;
  57   sender_id_ = 0;
  58   local_addr_ = "";
  59   local_port_ = 4444;
  60   local_sync_port_ = 0;
  61   remote_sync_port_ = 0;
  62   remote_sync_addr_ = "";
  63   remote_addr_ = "";
  64   remote_port_ = 4444;
  65   dev_name_ = "tap";
  66   dev_type_ = "";
  67   ifconfig_param_local_ = "192.168.200.1";
  68   ifconfig_param_remote_netmask_ = "255.255.255.0";
  69   seq_window_size_ = 100;
  70   cipher_ = "aes-ctr";
  71   kd_prf_ = "aes-ctr";
  72   auth_algo_ = "sha1";
  73   mux_ = 0;
  74 }
  75
  76 Options::~Options()
  77 {
  78 }
  79
  80 #define PARSE_BOOL_PARAM(SHORT, LONG, VALUE)             \
  81     else if(str == SHORT || str == LONG)                 \
  82       VALUE = true;
  83
  84 #define PARSE_INVERSE_BOOL_PARAM(SHORT, LONG, VALUE)     \
  85     else if(str == SHORT || str == LONG)                 \
  86       VALUE = false;
  87
  88 #define PARSE_SCALAR_PARAM(SHORT, LONG, VALUE)           \
  89     else if(str == SHORT || str == LONG)                 \
  90     {                                                    \
  91       if(argc < 1 || argv[i+1][0] == '-')                \
  92         return false;                                    \
  93       std::stringstream tmp;                             \
  94       tmp << argv[i+1];                                  \
  95       tmp >> VALUE;                                      \
  96       argc--;                                            \
  97       i++;                                               \
  98     }
  99
 100 #define PARSE_SCALAR_PARAM2(SHORT, LONG, VALUE1, VALUE2) \
 101     else if(str == SHORT || str == LONG)                 \
 102     {                                                    \
 103       if(argc < 2 ||                                     \
 104          argv[i+1][0] == '-' || argv[i+2][0] == '-')     \
 105         return false;                                    \
 106       std::stringstream tmp;                             \
 107       tmp << argv[i+1] << " " << argv[i+2];              \
 108       tmp >> VALUE1;                                     \
 109       tmp >> VALUE2;                                     \
 110       argc-=2;                                           \
 111       i+=2;                                              \
 112     }
 113
 114 #define PARSE_HEXSTRING_PARAM(SHORT, LONG, VALUE)        \
 115     else if(str == SHORT || str == LONG)                 \
 116     {                                                    \
 117       if(argc < 1 || argv[i+1][0] == '-')                \
 118         return false;                                    \
 119       VALUE = Buffer(std::string(argv[i+1]));            \
 120       argc--;                                            \
 121       i++;                                               \
 122     }
 123
 124 #define PARSE_CSLIST_PARAM(SHORT, LONG, LIST)            \
 125     else if(str == SHORT || str == LONG)                 \
 126     {                                                    \
 127       if(argc < 1 || argv[i+1][0] == '-')                \
 128         return false;                                    \
 129       std::stringstream tmp(argv[i+1]);                  \
 130                         while (tmp.good())                                 \
 131                         {                                                  \
 132                                 std::string tmp_line;                            \
 133                                 getline(tmp,tmp_line,',');                       \
 134                                 LIST.push(tmp_line);                             \
 135                         }                                                  \
 136       argc--;                                            \
 137       i++;                                               \
 138     }
 139
 140 bool Options::parse(int argc, char* argv[])
 141 {
 142   Lock lock(mutex);
 143
 144   progname_ = argv[0];
 145   argc--;
 146   std::queue<std::string> host_port_queue;
 147   for(int i=1; argc > 0; ++i)
 148   {
 149     std::string str(argv[i]);
 150     argc--;
 151
 152     if(str == "-h" || str == "--help")
 153       return false;
 154     PARSE_INVERSE_BOOL_PARAM("-D","--nodaemonize", daemonize_)
 155     PARSE_SCALAR_PARAM("-s","--sender-id", sender_id_)
 156     PARSE_SCALAR_PARAM("-i","--interface", local_addr_)
 157     PARSE_SCALAR_PARAM("-p","--port", local_port_)
 158     PARSE_SCALAR_PARAM("-S","--sync-port", local_sync_port_)
 159     PARSE_SCALAR_PARAM("-I","--sync-interface", local_sync_addr_)
 160     PARSE_SCALAR_PARAM("-R","--remote-sync-host", remote_sync_addr_)
 161     PARSE_SCALAR_PARAM("-O","--remote-sync-port", remote_sync_port_)
 162     PARSE_SCALAR_PARAM("-r","--remote-host", remote_addr_)
 163     PARSE_SCALAR_PARAM("-o","--remote-port", remote_port_)
 164     PARSE_SCALAR_PARAM("-d","--dev", dev_name_)
 165     PARSE_SCALAR_PARAM("-t","--type", dev_type_)
 166     PARSE_SCALAR_PARAM2("-n","--ifconfig", ifconfig_param_local_, ifconfig_param_remote_netmask_)
 167     PARSE_SCALAR_PARAM("-w","--window-size", seq_window_size_)
 168     PARSE_SCALAR_PARAM("-m","--mux", mux_)
 169     PARSE_SCALAR_PARAM("-c","--cipher", cipher_)
 170     PARSE_HEXSTRING_PARAM("-K","--key", key_)
 171     PARSE_HEXSTRING_PARAM("-A","--salt", salt_)
 172     PARSE_SCALAR_PARAM("-k","--kd-prf", kd_prf_)
 173     PARSE_SCALAR_PARAM("-a","--auth-algo", auth_algo_)
 174                 PARSE_CSLIST_PARAM("-M","--sync-hosts", host_port_queue)
 175     else
 176       return false;
 177   }
 178
 179   if(cipher_ == "null" && auth_algo_ == "null")
 180     kd_prf_ = "null";
 181   if((cipher_ != "null" || auth_algo_ != "null") && kd_prf_ == "null")
 182     kd_prf_ = "aes-ctr";
 183
 184         while(!host_port_queue.empty())
 185         {
 186                 std::stringstream tmp_stream(host_port_queue.front());
 187                 OptionConnectTo oct;
 188                 getline(tmp_stream,oct.host,':');
 189                 if(!tmp_stream.good())
 190                         return false;
 191                 tmp_stream >> oct.port;
 192                 host_port_queue.pop();
 193                 connect_to_.push_back(oct);
 194         }
 195   return true;
 196 }
 197
 198 void Options::printUsage()
 199 {
 200   std::cout << "USAGE:" << std::endl;
 201   std::cout << "anytun [-h|--help]                         prints this..." << std::endl;
 202 //  std::cout << "       [-f|--config] <file>                the config file" << std::endl;
 203   std::cout << "       [-D|--nodaemonize]                  don't run in background" << std::endl;
 204   std::cout << "       [-s|--sender-id ] <sender id>       the sender id to use" << std::endl;
 205   std::cout << "       [-i|--interface] <ip-address>       local anycast ip address to bind to" << std::endl;
 206   std::cout << "       [-p|--port] <port>                  local anycast(data) port to bind to" << std::endl;
 207   std::cout << "       [-I|--sync-interface] <ip-address>  local unicast(sync) ip address to bind to" << std::endl;
 208   std::cout << "       [-S|--sync-port] <port>             local unicast(sync) port to bind to" << std::endl;
 209   std::cout << "       [-M|--sync-hosts] <hostname|ip>:<port>[,<hostname|ip>:<port>[...]]"<< std::endl;
 210         std::cout << "                                           remote hosts to sync with" << std::endl;
 211   std::cout << "       [-r|--remote-host] <hostname|ip>    remote host" << std::endl;
 212   std::cout << "       [-o|--remote-port] <port>           remote port" << std::endl;
 213   std::cout << "       [-d|--dev] <name>                   device name" << std::endl;
 214   std::cout << "       [-t|--type] <tun|tap>               device type" << std::endl;
 215   std::cout << "       [-n|--ifconfig] <local>             the local address for the tun/tap device" << std::endl
 216             << "                       <remote|netmask>    the remote address(tun) or netmask(tap)" << std::endl;
 217   std::cout << "       [-w|--window-size] <window size>    seqence number window size" << std::endl;
 218   std::cout << "       [-m|--mux] <mux-id>                 the multiplex id to use" << std::endl;
 219   std::cout << "       [-c|--cipher] <cipher type>         payload encryption algorithm" << std::endl;
 220   std::cout << "       [-K|--key] <master key>             master key to use for encryption" << std::endl;
 221   std::cout << "       [-A|--salt] <master salt>           master salt to use for encryption" << std::endl;
 222   std::cout << "       [-k|--kd-prf] <kd-prf type>         key derivation pseudo random function" << std::endl;
 223   std::cout << "       [-a|--auth-algo] <algo type>        message authentication algorithm" << std::endl;
 224 }
 225
 226 void Options::printOptions()
 227 {
 228   Lock lock(mutex);
 229   std::cout << "Options:" << std::endl;
 230   std::cout << "daemonize=" << daemonize_ << std::endl;
 231   std::cout << "sender_id='" << sender_id_ << "'" << std::endl;
 232   std::cout << "local_addr='" << local_addr_ << "'" << std::endl;
 233   std::cout << "local_port='" << local_port_ << "'" << std::endl;
 234   std::cout << "local_sync_addr='" << local_sync_addr_ << "'" << std::endl;
 235   std::cout << "local_sync_port='" << local_sync_port_ << "'" << std::endl;
 236   std::cout << "remote_addr='" << remote_addr_ << "'" << std::endl;
 237   std::cout << "remote_port='" << remote_port_ << "'" << std::endl;
 238   std::cout << "dev_name='" << dev_name_ << "'" << std::endl;
 239   std::cout << "dev_type='" << dev_type_ << "'" << std::endl;
 240   std::cout << "ifconfig_param_local='" << ifconfig_param_local_ << "'" << std::endl;
 241   std::cout << "ifconfig_param_remote_netmask='" << ifconfig_param_remote_netmask_ << "'" << std::endl;
 242   std::cout << "seq_window_size='" << seq_window_size_ << "'" << std::endl;
 243   std::cout << "mux_id='" << mux_ << "'" << std::endl;
 244   std::cout << "cipher='" << cipher_ << "'" << std::endl;
 245   std::cout << "key=" << key_.getHexDumpOneLine() << std::endl;
 246   std::cout << "salt=" << salt_.getHexDumpOneLine() << std::endl;
 247   std::cout << "kd_prf='" << kd_prf_ << "'" << std::endl;
 248   std::cout << "auth_algo='" << auth_algo_ << "'" << std::endl;
 249 }
 250
 251 std::string Options::getProgname()
 252 {
 253   Lock lock(mutex);
 254   return progname_;
 255 }
 256
 257
 258 Options& Options::setProgname(std::string p)
 259 {
 260   Lock lock(mutex);
 261   progname_ = p;
 262   return *this;
 263 }
 264
 265 bool Options::getDaemonize()
 266 {
 267   return daemonize_;
 268 }
 269
 270 Options& Options::setDaemonize(bool d)
 271 {
 272   daemonize_ = d;
 273   return *this;
 274 }
 275
 276 ConnectToList Options::getConnectTo()
 277 {
 278   Lock lock(mutex);
 279         return connect_to_;
 280 }
 281
 282 sender_id_t Options::getSenderId()
 283 {
 284   return sender_id_;
 285 }
 286
 287 Options& Options::setSenderId(sender_id_t s)
 288 {
 289   sender_id_ = s;
 290   return *this;
 291 }
 292
 293 std::string Options::getLocalAddr()
 294 {
 295   Lock lock(mutex);
 296   return local_addr_;
 297 }
 298
 299 Options& Options::setLocalAddr(std::string l)
 300 {
 301   Lock lock(mutex);
 302   local_addr_ = l;
 303   return *this;
 304 }
 305
 306 std::string Options::getLocalSyncAddr()
 307 {
 308   Lock lock(mutex);
 309   return local_sync_addr_;
 310 }
 311
 312 Options& Options::setLocalSyncAddr(std::string l)
 313 {
 314   Lock lock(mutex);
 315   local_sync_addr_ = l;
 316   return *this;
 317 }
 318
 319 u_int16_t Options::getLocalPort()
 320 {
 321   return local_port_;
 322 }
 323
 324 Options& Options::setLocalPort(u_int16_t l)
 325 {
 326   local_port_ = l;
 327   return *this;
 328 }
 329
 330 u_int16_t Options::getLocalSyncPort()
 331 {
 332   return local_sync_port_;
 333 }
 334
 335 Options& Options::setLocalSyncPort(u_int16_t l)
 336 {
 337   local_sync_port_ = l;
 338   return *this;
 339 }
 340
 341 u_int16_t Options::getRemoteSyncPort()
 342 {
 343   return remote_sync_port_;
 344 }
 345
 346 Options& Options::setRemoteSyncPort(u_int16_t l)
 347 {
 348   remote_sync_port_ = l;
 349   return *this;
 350 }
 351
 352 std::string Options::getRemoteSyncAddr()
 353 {
 354   Lock lock(mutex);
 355   return remote_sync_addr_;
 356 }
 357
 358 Options& Options::setRemoteSyncAddr(std::string r)
 359 {
 360   Lock lock(mutex);
 361   remote_sync_addr_ = r;
 362   return *this;
 363 }
 364
 365 std::string Options::getRemoteAddr()
 366 {
 367   Lock lock(mutex);
 368   return remote_addr_;
 369 }
 370
 371 Options& Options::setRemoteAddr(std::string r)
 372 {
 373   Lock lock(mutex);
 374   remote_addr_ = r;
 375   return *this;
 376 }
 377
 378 u_int16_t Options::getRemotePort()
 379 {
 380   return remote_port_;
 381 }
 382
 383 Options& Options::setRemotePort(u_int16_t r)
 384 {
 385   remote_port_ = r;
 386   return *this;
 387 }
 388
 389 Options& Options::setRemoteAddrPort(std::string addr, u_int16_t port)
 390 {
 391   Lock lock(mutex);
 392   remote_addr_ = addr;
 393   remote_port_ = port;
 394   return *this;
 395 }
 396
 397 std::string Options::getDevName()
 398 {
 399   Lock lock(mutex);
 400   return dev_name_;
 401 }
 402
 403 std::string Options::getDevType()
 404 {
 405   Lock lock(mutex);
 406   return dev_type_;
 407 }
 408
 409 Options& Options::setDevName(std::string d)
 410 {
 411   Lock lock(mutex);
 412   dev_name_ = d;
 413   return *this;
 414 }
 415
 416 Options& Options::setDevType(std::string d)
 417 {
 418   Lock lock(mutex);
 419   dev_type_ = d;
 420   return *this;
 421 }
 422
 423 std::string Options::getIfconfigParamLocal()
 424 {
 425   Lock lock(mutex);
 426   return ifconfig_param_local_;
 427 }
 428
 429 Options& Options::setIfconfigParamLocal(std::string i)
 430 {
 431   Lock lock(mutex);
 432   ifconfig_param_local_ = i;
 433   return *this;
 434 }
 435
 436 std::string Options::getIfconfigParamRemoteNetmask()
 437 {
 438   Lock lock(mutex);
 439   return ifconfig_param_remote_netmask_;
 440 }
 441
 442 Options& Options::setIfconfigParamRemoteNetmask(std::string i)
 443 {
 444   Lock lock(mutex);
 445   ifconfig_param_remote_netmask_ = i;
 446   return *this;
 447 }
 448
 449 window_size_t Options::getSeqWindowSize()
 450 {
 451   return seq_window_size_;
 452 }
 453
 454 Options& Options::setSeqWindowSize(window_size_t s)
 455 {
 456   seq_window_size_ = s;
 457   return *this;
 458 }
 459
 460 std::string Options::getCipher()
 461 {
 462   Lock lock(mutex);
 463   return cipher_;
 464 }
 465
 466 Options& Options::setCipher(std::string c)
 467 {
 468   Lock lock(mutex);
 469   cipher_ = c;
 470   return *this;
 471 }
 472
 473 std::string Options::getKdPrf()
 474 {
 475   Lock lock(mutex);
 476   return kd_prf_;
 477 }
 478
 479 Options& Options::setKdPrf(std::string k)
 480 {
 481   Lock lock(mutex);
 482   kd_prf_ = k;
 483   return *this;
 484 }
 485
 486 std::string Options::getAuthAlgo()
 487 {
 488   Lock lock(mutex);
 489   return auth_algo_;
 490 }
 491
 492 Options& Options::setAuthAlgo(std::string a)
 493 {
 494   Lock lock(mutex);
 495   auth_algo_ = a;
 496   return *this;
 497 }
 498
 499 u_int16_t Options::getMux()
 500 {
 501   Lock lock(mutex);
 502   return mux_;
 503 }
 504
 505 Options& Options::setMux(u_int16_t m)
 506 {
 507   Lock lock(mutex);
 508   mux_ = m;
 509   return *this;
 510 }
 511
 512 Buffer Options::getKey()
 513 {
 514   Lock lock(mutex);
 515   return key_;
 516 }
 517
 518 Options& Options::setKey(std::string k)
 519 {
 520   Lock lock(mutex);
 521   key_ = k;
 522   return *this;
 523 }
 524
 525 Buffer Options::getSalt()
 526 {
 527   Lock lock(mutex);
 528   return salt_;
 529 }
 530
 531 Options& Options::setSalt(std::string s)
 532 {
 533   Lock lock(mutex);
 534   salt_ = s;
 535   return *this;
 536 }