简单的端口扫描程序源代码.txt

简单的端口扫描程序源代码

简单的端口扫描程序源代码
2004-7-21 14:31:51 
 

作  者：miyagi
发表于：2003-1-17 
#include <winsock2.h>
#include <windows.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")
//define global variable
long MaxThread=100;
HANDLE hSemaphore;
long PreviousCount=0;
int TargetIP;
DWORD WINAPI portscan(LPVOID lp);
int main(int argc, char **argv)
{
HANDLE hThread=NULL;
WSADATA wsd;
int i;
DWORD dwThreadID;
if(argc!=4)
{
printf("\n%s,scan port by miyagi\n"
"usage:%s <targetIP> <StartPort> <StopPort>\n",argv[0],argv[0]);
return 1;
}
__try
{
//load winsock library
if(WSAStartup(MAKEWORD(2,2),&wsd)!=0)
{
printf("Failed to load winsock library!Error %d\n",GetLastError());
__leave;
}
//create semaphore
hSemaphore=CreateSemaphore(NULL,MaxThread,MaxThread,NULL);
if(hSemaphore==NULL)
{
printf("Failed to create semaphore!Error %d\n",GetLastError());
__leave;
}
//get target IP and target port range
TargetIP=inet_addr(argv[1]);
int TargetHost=ntohl(TargetIP);
int StartPort=atoi(argv[2]);
int StopPort=atoi(argv[3]);
//create thread to scan
for(i=StartPort;i<=StopPort;i++)
{
hThread=CreateThread(NULL, 0, portscan, (LPVOID)i , 0, &dwThreadID);
if(hThread==NULL)
{
printf("Faile to create thread!Error %d\n",GetLastError());
break;
}
Sleep(10);
CloseHandle(hThread);
WaitForSingleObject(hSemaphore, INFINITE);
}
//wait for all thread done
while(1)
{

WaitForSingleObject(hSemaphore, INFINITE);
if(!ReleaseSemaphore(hSemaphore, 1, &PreviousCount))
{
printf("\nmain() ReleaseSemaphore failed:%d",GetLastError());
Sleep(5000);
break;
}if(PreviousCount=(MaxThread-1))
{
printf("\n^o^ scan end!\n");
break;
}
Sleep(500);
}
}//try end
__finally
{
CloseHandle(hSemaphore);
WSACleanup();

}
return 0;
}
DWORD WINAPI portscan(LPVOID lp)
{
struct sockaddr_in server;
SOCKET s=INVALID_SOCKET;
int iPort=(int)lp;
s=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(s==INVALID_SOCKET)
{
printf("Faile to create socket!Error %d",GetLastError());
ExitProcess(1);
}
server.sin_family=AF_INET;
server.sin_addr.S_un.S_addr=TargetIP;
server.sin_port=htons(iPort);
__try
{
//connect to target
if(connect(s, (struct sockaddr *)&server, sizeof(server))!=0)
__leave;
else
printf(" port TCP %d is open!\n",ntohs(server.sin_port));
}//try end
__finally
{
Sleep(500);
if(!ReleaseSemaphore(hSemaphore,1, NULL)) 
printf("\nThread ReleaseSemaphore Failed:%d",GetLastError());
closesocket(s);
}
return 0;