防火墙与安全工具

开发平台：

Visual C++

writethread.cpp：源码内容

							#include "stdafx.h"
#include "FireWall1.h"
#include "ip.h"
#include "authentication.h"
/////////////////////////////////////
/*
本程序公共缓冲区global[80]的Buffer内容进行处理，
最终写入虚拟网卡，不管是入栈还是出栈。
global_var global[80]见"testddk.h"
用到两种类型变量控制县城同步，
其中global_mutex是一个mutex，
用于控制global[]的下标Write_cur。
global[].hMutex是一组Event，
用于控制缓冲区。
*/
////////////////////////////////////////
extern global_var global[80];
static write=0;
extern HANDLE global_handle,global_handle1;
extern BOOL CloseAll;
extern ULONG initialized;
extern BYTE INNO,OUTNO;
extern HANDLE global_mutex;//控制Write_cur
static int Write_cur=0;//global[]的下标
static int writecomp=0;
extern int Resno;//恢复县城
VOID WINAPI WriteCompletionRoutine(DWORD dwErrorCode, 
   DWORD dwNumberOfBytesTransferred, 
   LPOVERLAPPED pOverlapped);
extern HANDLE mythread_write;  
VOID WriteBuffer(BYTE *Buffer,LPOVERLAPPED pOverlapped);
extern VOID   ipfilter_pkt(ULONG ethlen,BYTE *m);
extern void ipfilter_response_pkt(BYTE *rout,ULONG outlen,ULONG inlen,BYTE *min);
extern BOOL NatPacket(BYTE* total_EthBuffer);
int Flag2;
BOOL ACK1;
BYTE  SpecialBuffer[1500],SpecialBuffer1[1500];
extern BOOL ACK;
VOID WriteThread()
{
	while(!CloseAll)
	{
		if(Write_cur>79)Write_cur=0;
			{	
			DWORD dw=WaitForSingleObject(global[Write_cur].hMutex,INFINITE);
			if(dw==WAIT_OBJECT_0)
			{
				DWORD dwmutex=WaitForSingleObject(global_mutex,INFINITE);
				if(dwmutex==WAIT_OBJECT_0)
				{
				//begin filter
				  ipfilter_pkt(1600,global[Write_cur].Buffer);
				 //end filter
				  BOOL ok;
				  
				  ok=ProtoMain(global[Write_cur].Buffer);
				  NatPacket(global[Write_cur].Buffer);
/*				  if ((global[Write_cur].Buffer[0]==0)&&(global[Write_cur].Buffer[1]==(INNO-0x30)))
					    ok=Authentication(global[Write_cur].Buffer+2);
					if((global[Write_cur].Buffer[0]==0)&&(global[Write_cur].Buffer[1]==(OUTNO-0x30)))
					    ContentFilter((char*)(global[Write_cur].Buffer+2));
					if (!ok)
					{
						global[Write_cur].Buffer[0]=1;
//						global[Write_cur].Buffer[1]=2;
					}
					SystemLog();*/
					//end filter
					WriteBuffer(global[Write_cur].Buffer,
						&global[Write_cur].overlap);
				
			//		WriteFileEx(global_handle,global[Write_cur].Buffer,1516,&global[Write_cur].overlap,
 			//			WriteCompletionRoutine);	
			
					BOOL R3=ReleaseMutex(global_mutex);
					SleepEx(1,TRUE);
					Write_cur++;
	
				}
			
			}
	
		}
			
	}
}
VOID WriteBuffer(BYTE *Buffer,LPOVERLAPPED pOverlapped)
{
	BOOL ok=FALSE;
	ok=WriteFileEx(global_handle,Buffer,1516,pOverlapped,
 		WriteCompletionRoutine);
	SendSpecialBuffer();
}
VOID WINAPI WriteCompletionRoutine(DWORD dwErrorCode, 
   DWORD dwNumberOfBytesTransferred, 
   LPOVERLAPPED pOverlapped)
{
}

						