/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
/
/**
 * INCLUDE: akgnet_inetaddr.hh
 *
 * MODULE:  akg network
 * CLASS:   HostAddress, SocketAddress
 *
 * COMMENTS:
 * Namespace akg
 * 
*/
#ifndef AKGNET_INETADDR_HH
#define AKGNET_INETADDR_HH

#include "akgnet_common.hh"


namespace akg
  {

/** This class represents the internet address of a computer and envelops
    the OS data structure 'in_addr'
       Important: new is supposed to throw
*/


class HostAddress
  {
    public:
      static const uint32_t addrLocalhost = INADDR_LOOPBACK;
      static const uint32_t addrBroadcast = INADDR_BROADCAST;
      static const uint32_t addrAny       = INADDR_ANY;
      static const uint32_t addrNone      = INADDR_NONE;
      
      /// Default constructor, creating an 'invalid' object
      HostAddress() throw();
      
      /// Copy constructor
      HostAddress(const HostAddress&);
      
      /// Constructor taking a 32-bit internet address
      HostAddress(uint32_t);
      
      /** Constructor taking a string representation of the address
          It can be the the name or the internet address
	  Assert: theHostName != 0
      */
      HostAddress(const char* theHostName);
      
      /// Destructor
      ~HostAddress() throw();
      
      /// Returns true if the object was initialized correctly
      bool        isValid() const throw();
      
      /// Returns the full host name, meaning hostname.domainname
      const char* getFullHostName() const throw();
      
      /// Returns the short form of the host name
      const char* getShortHostName() const throw();
      
      /// Returns the IP-Address as a 32-bit value
      uint32_t    getAddress() const throw();
      
      /// Returns the string representation of the IP-Address
      const char* getStringAddress() const throw();
      
    private:
      /// Initializes the object with default values. Used by the constructors
      void initDefault() throw();
      
      /// Initializes the object from a OS 'hostent' object. Used by the constructors
      bool init(hostent *);
      
      char *fullHostName;
      char *shortHostName;
      char *strAddress;
      in_addr address;
      
      ///unimplemented
      HostAddress operator=(const HostAddress&);        

   };


/** This class represents the IP address of a OS socket and envelops
    the OS data structure 'sockaddr_in'
*/
class SocketAddress
  {
    public:
      /// Default constructor
      SocketAddress() throw();
      
      /// Constructor taking a 'sockaddr_in'
      SocketAddress(sockaddr_in&) throw();
      
      /// Initialization from a 'sockaddr_in'
      void        init(sockaddr_in&) throw();
      
      /// Returns true if the object is initialized
      bool        isValid() const throw();
      
      /// Returns the HostAddress of this socket
      HostAddress getHostAddress() const throw();
      
      /// Returns the IP Address
      uint32_t    getAddress() const throw();
      int         getPort() const throw();   
    private:
      bool valid;
      void clear() throw();
      
    private:
      sockaddr_in address;
      /*
         sa_family_t sin_family
	 struct inaddr
	    { uint32_t s_addr;
	     }          
	                sin_addr
	 ushort         sin_port    
       */
   };

} // namespace
#endif