/*==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/>.

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/pnNetCli/Intern.h
*   
***/

#ifdef PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNNETCLI_INTERN_H
#error "Header $/Plasma20/Sources/Plasma/NucleusLib/pnNetCli/Intern.h included more than once"
#endif
#define PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNNETCLI_INTERN_H


namespace pnNetCli {

/*****************************************************************************
*
*   Channel
*
***/

struct NetMsgChannel;

NetMsgChannel * NetMsgChannelLock (
    unsigned        protocol,
    bool            server,
    unsigned *      largestRecv
);
void NetMsgChannelUnlock (
    NetMsgChannel * channel
);
const NetMsgInitRecv * NetMsgChannelFindRecvMessage (
    NetMsgChannel * channel,
    unsigned        messageId
);
const NetMsgInitSend * NetMsgChannelFindSendMessage (
    NetMsgChannel * channel,
    unsigned        messageId
);
void NetMsgChannelGetDhConstants (
    const NetMsgChannel *   channel,
    unsigned *              dh_g,
    const BigNum **         dh_xa,  // client: dh_x     server: dh_a
    const BigNum **         dh_n
);


/*****************************************************************************
*
*   Encrypt
*
***/

void NetMsgCryptClientStart (
    NetMsgChannel * channel,
    unsigned        seedBytes,
    const byte      seedData[],
    BigNum *        clientSeed,
    BigNum *        serverSeed
);

void NetMsgCryptServerConnect (
    NetMsgChannel * channel,
    unsigned        seedBytes,
    const byte      seedData[],
    BigNum *        clientSeed
);


/*****************************************************************************
*
*   Utils
*
***/

class CInputAccumulator {
    ARRAY(byte) buffer;
    byte *      curr;

public:
    CInputAccumulator ();
    void Add (unsigned count, const byte * data);
    bool Get (unsigned count, void * dest); // returns false if request cannot be fulfilled
    bool Eof () const;
    void Clear ();
    void Compact ();
};


} using namespace pnNetCli;