简单的端口扫描程序源代码

简单的端口扫描程序源代码

作者：miyagi

#include

#include

#include

#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 \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);

{

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

{

WSACleanup();

}

return 0;

}

DWORD WINAPI portscan(LPVOID lp)

{

struct sockaddr_in server;

SOCKET s=INV ALID_SOCKET;

int iPort=(int)lp;

s=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

if(s==INV ALID_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;