DnsUtil.hxx

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#if !defined(RESIP_DNSUTIL_HXX)
#define RESIP_DNSUTIL_HXX
 
#include <list>
#include "rutil/Socket.hxx"
#include "rutil/BaseException.hxx"
#include "rutil/Data.hxx"
 
#ifndef WIN32
#include <netinet/in.h>
#else
#include <Ws2tcpip.h>
#endif
 
struct in_addr;
struct in6_addr;
namespace resip
{
 
class Tuple;
 
class DnsUtil
{
   public:
      class Exception final : public BaseException
      {
         public:
            Exception(const Data& msg,
                      const Data& file,
                      const int line)
               : BaseException(msg, file, line) {}            
         protected:
            const char* name() const noexcept override { return "DnsUtil::Exception"; }
      };
 
      static const Data& getLocalHostName();
 
      static Data getLocalDomainName();
 
      static Data getLocalIpAddress(const Data& defaultInterface=Data::Empty) ;
 
      // returns pair of interface name, ip address
      static std::list<std::pair<Data,Data> > getInterfaces(const Data& matchingInterface=Data::Empty);
 
      // wrappers for the not so ubiquitous inet_pton, inet_ntop (e.g. WIN32)
 
      static Data inet_ntop(const struct in_addr& addr);
 
      static Data inet_ntop(const struct sockaddr& addr);
 
      static int inet_pton(const Data& printableIp, struct in_addr& dst);
      
      static bool isIpAddress(const Data& ipAddress);
      static bool isIpV4Address(const Data& ipAddress);
      static bool isIpV6Address(const Data& ipAddress);
 
#ifdef IPPROTO_IPV6
      static Data inet_ntop(const struct in6_addr& addr);
 
      static int inet_pton(const Data& printableIp, struct in6_addr& dst);
#endif
 
      //pass-throughs when supported, actual implemenation in the WIN32 case
 
      static const char * inet_ntop(int af, const void* src, char* dst, size_t size);      
 
#ifdef __APPLE__
      static const Data UInt8ToStr[256];
#endif // __APPLE__
 
      static int inet_pton(int af, const char * src, void * dst);
      
 
      // so string (case) comparison will work
      // or something
      static Data canonicalizeIpV6Address(const Data& ipV6Address);
 
      static std::list<Data> lookupARecords(const Data& host);
 
   private:
      static Data lookupLocalHostName();
};
 
}
 
 
#endif
/* ====================================================================
 * 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
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 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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 * 
 * ====================================================================
 * 
 * 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/>.
 *
 */