stun_udp.h

/*
 The oRTP library is an RTP (Realtime Transport Protocol - rfc3550) stack.
 Copyright (C) 2001  Simon MORLAT simon.morlat@linphone.org
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
 
/* ====================================================================
 * The Vovida Software License, Version 1.0  *  * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following
 * conditions * are met: *  * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. *  * 2. Redistributions in binary form must reproduce the above copyright *    notice,
 * this list of conditions and the following disclaimer in *    the documentation and/or other materials provided with the *    distribution. *  * 3. The names "VOCAL", "Vovida Open Communication Application Library", *    and "Vovida Open
 * Communication Application Library (VOCAL)" must *    not be used to endorse or promote products derived from this *    software without prior written permission. For written *    permission, please contact vocal@vovida.org. * * 4. Products derived
 * from this software may not be called "VOCAL", nor *    may "VOCAL" appear in their name, without prior written *    permission of Vovida Networks, Inc. *  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES * IN
 * EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. *  *
 * ==================================================================== *  * This software consists of voluntary contributions made by Vovida * Networks, Inc. and many individuals on behalf of Vovida Networks, * Inc.  For more information on Vovida
 * Networks, Inc., please see * <http://www.vovida.org/>.
 *
 */
 
#ifndef __STUN_UDP_H__
#define __STUN_UDP_H__
 
#ifndef __cplusplus
//#define bool int
//#define false 0
//#define true 1
#endif
 
#ifdef __MACH__
#include <sys/socket.h>
#ifndef _SOCKLEN_T
typedef int socklen_t;
#endif
#endif
 
#include <ortp/port.h>
 
#if !defined(_WIN32_WCE)
#include <errno.h>
#endif
 
#if defined(WIN32) || defined(_WIN32_WCE)
#if (_MSC_VER < 1900)
#define snprintf _snprintf
#endif
 
#include <winsock2.h>
/* #include <io.h> */
 
typedef int socklen_t;
typedef SOCKET Socket;
 
#else
 
typedef int Socket;
#define INVALID_SOCKET -1
#define SOCKET_ERROR -1
 
#define closesocket(fd) close(fd)
 
#define WSANOTINITIALISED EPROTONOSUPPORT
 
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct addrinfo;
 
typedef struct {
  uint16_t port;
  uint32_t addr;
} StunAddress4;
 
typedef struct {
  uint16_t port;
  uint8_t addr[16];
} StunAddress6;
 
typedef struct {
  uint8_t family;
  union {
    StunAddress4 ipv4;
    StunAddress6 ipv6;
  } addr;
} StunIPAddress;
 
typedef struct {
  unsigned char octet[12];
} StunTrId;
 
void stunDecodeXorAddress(const StunIPAddress *xorAddress, StunIPAddress *destAddr, StunTrId *stunTrId);
 
void stunEncodeXorAddress(const StunIPAddress *origAddress, StunIPAddress *xorAddress, StunTrId *stunTrId);
 
char *stunIPAddressStr(const StunIPAddress *addr, char *tmp, size_t size_of_tmp);
 
char *stunIPAddress_ntop(const StunIPAddress *addr, char *tmp, size_t size_of_tmp);
 
/* convert a (numeric?) IP address string to StunIPAddress - return false is fails parse  */
bool_t stunIPToStunIPAddress(const char *ipaddr, int srcport, StunIPAddress *cAddr);
 
/* find the IP address of a the specified stun server - return false is fails parse  */
bool_t stunParseServerName(const char *serverName, StunIPAddress *addr_ipv4_udp, StunIPAddress *addr_ipv6_udp, StunIPAddress *addr_ipv4_tcp, StunIPAddress *addr_ipv6_tcp);
 
int stunGetaddrinfo(struct addrinfo **addrinfo, const char *hostname, int port, int protocol, int family);
 
/* Open a UDP socket to receive on the given port - if port is 0, pick a a
   port, if interfaceIp!=0 then use ONLY the interface specified instead of
   all of them  */
Socket openPort(StunIPAddress *ipaddr);
 
/* recive a UDP message */
bool_t getMessage(Socket fd, char *buf, int *len, StunIPAddress *fromIP);
 
/* send a UDP message */
bool_t sendMessage(Socket fd, char *msg, int len, StunIPAddress *dest);
 
/* set up network - does nothing in unix but needed for windows */
void initNetwork(void);
 
#ifdef __cplusplus
}
#endif
 
#endif