networkbase.cc

五行MMORPG引擎系统V1.0

/*///////////////////////////////////////////////////////////////////////////
UDP连接封装管理


李亦
2006.6.15
/*///////////////////////////////////////////////////////////////////////////

#include "platform/platform.h"
#include "platform/event.h"
#include "sim/netConnection.h"
#include "server/net/networkBase.h"
#include "core/bitStream.h"
#include "math/mRandom.h"
#include "platform/gameInterface.h"

//INetworkBase *GNet = NULL;

namespace CS
{

INetworkBase::INetworkBase()
{
   //AssertFatal(GNet == NULL, "ERROR: Multiple net interfaces declared.");
   //GNet = this;
	//m_pNetManager = pManager;
   mLastTimeoutCheckTime = 0;
   mAllowConnections = true;

}

void INetworkBase::InitRandomData()
{
   mRandomDataInitialized = true;
   U32 seed = Platform::getRealMilliseconds();

   if(Game->isJournalReading())
      Game->journalRead(&seed);
   else if(Game->isJournalWriting())
      Game->journalWrite(seed);

   MRandomR250 myRandom(seed);
   for(U32 i = 0; i < 12; i++)
      mRandomHashData[i] = myRandom.randI();
}

void INetworkBase::addPendingConnection(NetConnection *connection)
{
   Con::printf("Adding a pending connection");
   mPendingConnections.push_back(connection);
}

void INetworkBase::removePendingConnection(NetConnection *connection)
{
   for(U32 i = 0; i < mPendingConnections.size(); i++)
      if(mPendingConnections[i] == connection)
         mPendingConnections.erase(i);
}

NetConnection *INetworkBase::findPendingConnection(const NetAddress *address, U32 connectSequence)
{
   for(U32 i = 0; i < mPendingConnections.size(); i++)
      if(Net::compareAddresses(address, mPendingConnections[i]->getNetAddress()) &&
            connectSequence == mPendingConnections[i]->getSequence())
         return mPendingConnections[i];
   return NULL;
}


void INetworkBase::processPacketReceiveEvent(PacketReceiveEvent *prEvent)
{

   U32 dataSize = prEvent->size - PacketReceiveEventHeaderSize;
   BitStream pStream(prEvent->data, dataSize);

   // lookup the connection in the addressTable
   NetConnection *conn = NetConnection::lookup(&prEvent->sourceAddress);
   if(conn)
      conn->processRawPacket(&pStream);
}








void INetworkBase::CheckTimeouts()
{
   U32 time = Platform::getVirtualMilliseconds();
   if(time > mLastTimeoutCheckTime + TimeoutCheckInterval)
   {
      mLastTimeoutCheckTime = time;
      NetConnection *walk = NetConnection::getConnectionList();

      while(walk)
      {
         NetConnection *next = walk->getNext();
         if(walk->checkTimeout(time))
         {
            // this baddie timed out
            walk->onTimedOut();
            walk->deleteObject();
         }
         walk = next;
      }
   }
}

#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))

inline U32 rotlFixed(U32 x, unsigned int y)
{
   return (x >> y) | (x << (32 - y));
}

#define MD5STEP(f, w, x, y, z, data, s) w = rotlFixed(w + f(x, y, z) + data, s) + x

void INetworkBase::computeNetMD5(const NetAddress *address, U32 connectSequence, U32 digest[4])
{
	digest[0] = 0x67452301L;
	digest[1] = 0xefcdab89L;
	digest[2] = 0x98badcfeL;
	digest[3] = 0x10325476L;


   U32 a, b, c, d;

   a=digest[0];
   b=digest[1];
   c=digest[2];
   d=digest[3];

   U32 in[16];
   in[0] = address->type;
   in[1] = (U32(address->netNum[0]) << 24) |
           (U32(address->netNum[1]) << 16) |
           (U32(address->netNum[2]) << 8)  |
           (U32(address->netNum[3]));
   in[2] = address->port;
   in[3] = connectSequence;
   for(U32 i = 0; i < 12; i++)
      in[i + 4] = mRandomHashData[i];

   MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
   MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
   MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
   MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
   MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
   MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
   MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
   MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
   MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
   MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
   MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
   MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
   MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
   MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
   MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
   MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);

   MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
   MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
   MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
   MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
   MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
   MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
   MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
   MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
   MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
   MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
   MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
   MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
   MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
   MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
   MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
   MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);

   MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
   MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
   MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
   MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
   MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
   MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
   MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
   MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
   MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
   MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
   MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
   MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
   MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
   MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
   MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
   MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);

   MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
   MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
   MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
   MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
   MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
   MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
   MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
   MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
   MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
   MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
   MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
   MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
   MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
   MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
   MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
   MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);

	digest[0]+=a;
	digest[1]+=b;
	digest[2]+=c;
	digest[3]+=d;
}

};//namespace RPGServer