/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

This program 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.

This program 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 this program. If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
/*****************************************************************************
*
*   $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtAddr.h
*   
***/

#ifdef PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNUTILS_PRIVATE_PNUTADDR_H
#error "Header $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtAddr.h included more than once"
#endif
#define PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNUTILS_PRIVATE_PNUTADDR_H


/*****************************************************************************
*
*   Types and constants
*
***/


struct NetAddress {
    byte data[24];
};

typedef unsigned NetAddressNode;


extern NetAddress   kNilNetAddress;

typedef bool (*FNetAddressEqualityProc)(
    const NetAddress & a1,
    const NetAddress & a2
);


class CNetAddressHash {
    NetAddress              m_addr;
    FNetAddressEqualityProc m_equals;
public:
    CNetAddressHash (
        const NetAddress &      addr
    );
    CNetAddressHash (
        const NetAddress &      addr,
        FNetAddressEqualityProc equals
            // Useful values for 'equals':
            //      NetAddressEqual         --> address node and port numbers match
            //      NetAddressSameSystem    --> address node numbers match
    );
    void operator= (const CNetAddressHash & rhs) const; // not impl.
    bool operator== (const CNetAddressHash & rhs) const;
    unsigned GetHash () const;
    const NetAddress & GetAddr () const;
};


/*****************************************************************************
*
*   Functions
*
***/

enum ENetAddressFormat {
    kNetAddressFormatNodeNumber,
    kNetAddressFormatAll,
    kNumNetAddressFormats
};

unsigned NetAddressHash (const NetAddress & addr);

int NetAddressCompare (const NetAddress & a1, const NetAddress & a2);
bool NetAddressSameSystem (const NetAddress & a1, const NetAddress & a2);
inline bool NetAddressEqual (const NetAddress & a1, const NetAddress & a2) {
    return NetAddressCompare(a1, a2) == 0;
}

void NetAddressToString (
    const NetAddress &  addr, 
    wchar *             str, 
    unsigned            chars, 
    ENetAddressFormat   format
);

// 'str' must be in the form of a dotted IP address (IPv4 or IPv6)
// - names which require DNS lookup will cause the function to return false
bool NetAddressFromString (
    NetAddress *    addr,
    const wchar     str[],
    unsigned        defaultPort
);

unsigned NetAddressGetPort (
    const NetAddress &  addr
);
void NetAddressSetPort (
    unsigned            port,
    NetAddress *        addr
);

void NetAddressNodeToString (
    NetAddressNode      node,
    wchar *             str,
    unsigned            chars
);
NetAddressNode NetAddressNodeFromString (
    const wchar         string[],
    const wchar *       endPtr[]
);

NetAddressNode NetAddressGetNode (
    const NetAddress &  addr
);
void NetAddressFromNode (
    NetAddressNode      node,
    unsigned            port,
    NetAddress     *    addr
);

void NetAddressGetLoopback (
    unsigned            port,
    NetAddress *        addr
);

// Returns number of addresses set, which is guaranteed to be non-zero.
// Furthermore, it sorts the addresses so that loopback and NAT addresses
// are at the end of the array, and "real" addresses are at the beginning.
unsigned NetAddressGetLocal (
    unsigned        count,
    NetAddressNode  addresses[]
);