src/anyrtpproxy/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) 2007-2008 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 "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 void Host::splitAndSetAddrPort(std::string addr_port)
  54 {
  55   if(addr_port.length() >= 2 && addr_port[0] == ':' && addr_port[1] != ':') {
  56     addr_ = "";
  57     addr_port.erase(0,1);
  58     std::stringstream tmp_stream(addr_port);
  59     tmp_stream >> port_;
  60     return;
  61   }
  62
  63   size_t pos = addr_port.find_first_of("[");
  64
  65   if(pos != std::string::npos && pos != 0)
  66     return; // an [ was found but not at the beginning
  67
  68   bool hasPort = false;
  69   if(pos != std::string::npos) {
  70     addr_port.erase(pos, 1);
  71     pos = addr_port.find_first_of("]");
  72
  73     if(pos == std::string::npos)
  74       return; // no trailing ] although an leading [ was found
  75
  76     if(pos < addr_port.length()-2) {
  77
  78       if(addr_port[pos+1] != ':')
  79         return; // wrong port delimieter
  80
  81       addr_port[pos+1] = '/';
  82       hasPort = true;
  83     }
  84     else if(pos != addr_port.length()-1)
  85       return; // to few characters left
  86
  87     addr_port.erase(pos, 1);
  88   }
  89
  90   if(hasPort) {
  91     std::stringstream tmp_stream(addr_port);
  92
  93     getline(tmp_stream, addr_, '/');
  94     if(!tmp_stream.good())
  95       return;
  96
  97     tmp_stream >> port_;
  98   }
  99   else {
 100     addr_ = addr_port;
 101     port_ = "2323"; // default sync port
 102   }
 103 }
 104
 105
 106 Options::Options() : control_interface_("0.0.0.0", "22222")
 107
 108 {
 109   progname_ = "anyrtpproxy";
 110   chroot_ = false;
 111   username_ = "nobody";
 112   chroot_dir_ = "/var/run";
 113   daemonize_ = true;
 114   pid_file_ = "";
 115   local_addr_ = "";
 116         local_sync_port_ = "";
 117         rtp_start_port_ = 34000;
 118         rtp_end_port_ = 35000;
 119         no_nat_once_ = false;
 120         nat_ = false;
 121 }
 122
 123 Options::~Options()
 124 {
 125 }
 126
 127 #define PARSE_BOOL_PARAM(SHORT, LONG, VALUE)             \
 128     else if(str == SHORT || str == LONG)                 \
 129       VALUE = true;
 130
 131 #define PARSE_INVERSE_BOOL_PARAM(SHORT, LONG, VALUE)     \
 132     else if(str == SHORT || str == LONG)                 \
 133       VALUE = false;
 134
 135 #define PARSE_SCALAR_PARAM(SHORT, LONG, VALUE)           \
 136     else if(str == SHORT || str == LONG)                 \
 137     {                                                    \
 138       if(argc < 1 || argv[i+1][0] == '-')                \
 139         return false;                                    \
 140       std::stringstream tmp;                             \
 141       tmp << argv[i+1];                                  \
 142       tmp >> VALUE;                                      \
 143       argc--;                                            \
 144       i++;                                               \
 145     }
 146
 147 #define PARSE_SCALAR_PARAM2(SHORT, LONG, VALUE1, VALUE2) \
 148     else if(str == SHORT || str == LONG)                 \
 149     {                                                    \
 150       if(argc < 2 ||                                     \
 151          argv[i+1][0] == '-' || argv[i+2][0] == '-')     \
 152         return false;                                    \
 153       std::stringstream tmp;                             \
 154       tmp << argv[i+1] << " " << argv[i+2];              \
 155       tmp >> VALUE1;                                     \
 156       tmp >> VALUE2;                                     \
 157       argc-=2;                                           \
 158       i+=2;                                              \
 159     }
 160
 161 #define PARSE_STRING_PARAM(SHORT, LONG, VALUE)           \
 162     else if(str == SHORT || str == LONG)                 \
 163     {                                                    \
 164       if(argc < 1 || argv[i+1][0] == '-')                \
 165         return false;                                    \
 166       VALUE = std::string(argv[i+1]);                    \
 167       argc--;                                            \
 168       i++;                                               \
 169     }
 170
 171 #define PARSE_HEXSTRING_PARAM_SEC(SHORT, LONG, VALUE)    \
 172     else if(str == SHORT || str == LONG)                 \
 173     {                                                    \
 174       if(argc < 1 || argv[i+1][0] == '-')                \
 175         return false;                                    \
 176       VALUE = Buffer(std::string(argv[i+1]));            \
 177       for(size_t j=0; j < strlen(argv[i+1]); ++j)        \
 178         argv[i+1][j] = '#';                              \
 179       argc--;                                            \
 180       i++;                                               \
 181     }
 182
 183 #define PARSE_CSLIST_PARAM(SHORT, LONG, LIST)            \
 184     else if(str == SHORT || str == LONG)                 \
 185     {                                                    \
 186       if(argc < 1 || argv[i+1][0] == '-')                \
 187         return false;                                    \
 188       std::stringstream tmp(argv[i+1]);                  \
 189       /* LIST.clear(); */                                \
 190                         while (tmp.good())                                 \
 191                         {                                                  \
 192                                 std::string tmp_line;                            \
 193                                 getline(tmp,tmp_line,',');                       \
 194                                 LIST.push(tmp_line);                        \
 195                         }                                                  \
 196       argc--;                                            \
 197       i++;                                               \
 198     }
 199
 200 bool Options::parse(int argc, char* argv[])
 201 {
 202   Lock lock(mutex);
 203
 204   progname_ = argv[0];
 205   std::queue<std::string> host_port_queue;
 206   argc--;
 207   for(int i=1; argc > 0; ++i)
 208   {
 209     std::string str(argv[i]);
 210     argc--;
 211
 212     if(str == "-h" || str == "--help")
 213       return false;
 214     PARSE_BOOL_PARAM("-t","--chroot", chroot_)
 215     PARSE_BOOL_PARAM("-n","--nat", nat_)
 216     PARSE_BOOL_PARAM("-o","--no-nat-once", no_nat_once_)
 217     PARSE_SCALAR_PARAM("-u","--user", username_)
 218     PARSE_SCALAR_PARAM("-c","--chroot-dir", chroot_dir_)
 219     PARSE_INVERSE_BOOL_PARAM("-d","--nodaemonize", daemonize_)
 220     PARSE_SCALAR_PARAM("-P","--write-pid", pid_file_)
 221     PARSE_SCALAR_PARAM("-i","--interface", local_addr_)
 222     PARSE_STRING_PARAM("-s","--control", control_interface_)
 223     PARSE_SCALAR_PARAM2("-p","--port-range", rtp_start_port_, rtp_end_port_)
 224                 PARSE_CSLIST_PARAM("-M","--sync-hosts", host_port_queue)
 225     PARSE_SCALAR_PARAM("-S","--sync-port", local_sync_port_)
 226     PARSE_SCALAR_PARAM("-I","--sync-interface", local_sync_addr_)
 227     else
 228       return false;
 229   }
 230   while(!host_port_queue.empty())
 231   {
 232     std::stringstream tmp_stream(host_port_queue.front());
 233     OptionConnectTo oct;
 234     getline(tmp_stream,oct.host,':');
 235     if(!tmp_stream.good())
 236       return false;
 237     tmp_stream >> oct.port;
 238     host_port_queue.pop();
 239     connect_to_.push_back(oct);
 240   }
 241
 242   return sanityCheck();
 243 }
 244
 245 bool Options::sanityCheck()
 246 {
 247   if(control_interface_.port_ == "") control_interface_.port_ = "22222";
 248   return true;
 249 }
 250
 251 void Options::printUsage()
 252 {
 253   std::cout << "USAGE: anyrtpproxy" << std::endl;
 254   std::cout << "  [-h|--help]                      prints this..." << std::endl;
 255   std::cout << "  [-t|--chroot]                    chroot and drop priviledges" << std::endl;
 256   std::cout << "  [-u|--username] <username>       in case of chroot run as this user" << std::endl;
 257   std::cout << "  [-c|--chroot-dir] <directory>    directory to make a chroot to" << std::endl;
 258   std::cout << "  [-d|--nodaemonize]               don't run in background" << std::endl;
 259   std::cout << "  [-P|--write-pid] <path>          write pid to this file" << std::endl;
 260   std::cout << "  [-i|--interface] <ip-address>    local ip address to listen to for RTP packets" << std::endl;
 261   std::cout << "  [-s|--control] <addr>[:<port>]   the address/port to listen on for control commands" << std::endl;
 262   std::cout << "  [-p|--port-range] <start> <end>  port range used to relay rtp connections" << std::endl;
 263   std::cout << "  [-n|--nat]                       enable permantent automatic nat detection(use only with anytun)" << std::endl;
 264   std::cout << "  [-o|--no-nat-once]               disable automatic nat detection for new connections" << std::endl;
 265   std::cout << "  [-I|--sync-interface] <ip-address>  local unicast(sync) ip address to bind to" << std::endl;
 266   std::cout << "  [-S|--sync-port] <port>          local unicast(sync) port to bind to" << std::endl;
 267   std::cout << "  [-M|--sync-hosts] <hostname|ip>:<port>[,<hostname|ip>:<port>[...]]"<< std::endl;
 268   std::cout << "                                   List of Remote Sync Hosts/Ports"<< std::endl;
 269 }
 270
 271 void Options::printOptions()
 272 {
 273   Lock lock(mutex);
 274   std::cout << "Options:" << std::endl;
 275   std::cout << "chroot='" << chroot_ << "'" << std::endl;
 276   std::cout << "username='" << username_ << "'" << std::endl;
 277   std::cout << "chroot-dir='" << chroot_dir_ << "'" << std::endl;
 278   std::cout << "daemonize='" << daemonize_ << "'" << std::endl;
 279   std::cout << "pid_file='" << pid_file_ << "'" << std::endl;
 280   std::cout << "control-interface='" << control_interface_.toString() << "'" << std::endl;
 281   std::cout << "local_addr='" << local_addr_ << "'" << std::endl;
 282   std::cout << "rtp_start_port=" << rtp_start_port_ << std::endl;
 283   std::cout << "rtp_end_port=" << rtp_end_port_ << std::endl;
 284   std::cout << "local_sync_addr='" << local_sync_addr_ << "'" << std::endl;
 285   std::cout << "local_sync_port='" << local_sync_port_ << "'" << std::endl;
 286 }
 287
 288 std::string Options::getProgname()
 289 {
 290   Lock lock(mutex);
 291   return progname_;
 292 }
 293
 294 bool Options::getChroot()
 295 {
 296   Lock lock(mutex);
 297   return chroot_;
 298 }
 299
 300 bool Options::getNat()
 301 {
 302   Lock lock(mutex);
 303   return nat_;
 304 }
 305
 306 bool Options::getNoNatOnce()
 307 {
 308   Lock lock(mutex);
 309   return no_nat_once_;
 310 }
 311
 312 std::string Options::getUsername()
 313 {
 314   Lock lock(mutex);
 315   return username_;
 316 }
 317
 318 std::string Options::getChrootDir()
 319 {
 320   Lock lock(mutex);
 321   return chroot_dir_;
 322 }
 323
 324 bool Options::getDaemonize()
 325 {
 326   Lock lock(mutex);
 327   return daemonize_;
 328 }
 329
 330 std::string Options::getPidFile()
 331 {
 332   Lock lock(mutex);
 333   return pid_file_;
 334 }
 335
 336 Host Options::getControlInterface()
 337 {
 338   Lock lock(mutex);
 339   return control_interface_;
 340 }
 341
 342 std::string Options::getLocalAddr()
 343 {
 344   Lock lock(mutex);
 345   return local_addr_;
 346 }
 347
 348 Options& Options::setLocalAddr(std::string l)
 349 {
 350   Lock lock(mutex);
 351   local_addr_ = l;
 352   return *this;
 353 }
 354
 355 std::string Options::getLocalSyncAddr()
 356 {
 357   Lock lock(mutex);
 358   return local_sync_addr_;
 359 }
 360
 361 Options& Options::setLocalSyncAddr(std::string l)
 362 {
 363   Lock lock(mutex);
 364   local_sync_addr_ = l;
 365   return *this;
 366 }
 367
 368 std::string Options::getLocalSyncPort()
 369 {
 370   Lock lock(mutex);
 371   return local_sync_port_;
 372 }
 373
 374 Options& Options::setLocalSyncPort(std::string l)
 375 {
 376   Lock lock(mutex);
 377   local_sync_port_ = l;
 378   return *this;
 379 }
 380
 381 u_int16_t Options::getRtpStartPort()
 382 {
 383   return rtp_start_port_;
 384 }
 385
 386 Options& Options::setRtpStartPort(u_int16_t l)
 387 {
 388   rtp_start_port_ = l;
 389   return *this;
 390 }
 391
 392 u_int16_t Options::getRtpEndPort()
 393 {
 394   return rtp_end_port_;
 395 }
 396
 397 Options& Options::setRtpEndPort(u_int16_t l)
 398 {
 399   rtp_end_port_ = l;
 400   return *this;
 401 }
 402
 403 ConnectToList Options::getConnectTo()
 404 {
 405   Lock lock(mutex);
 406   return connect_to_;
 407 }
 408