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基于MFC的ping命令的代码实现

yoours2011-02-10 10:35:06 阅读 1139

简介一边听听音乐，一边写写文章。

BOOL IsActive(char *ip)

{

struct in_addr iaDest; // Internet地址结构体

LPHOSTENT pHost; // 主机入口结构体指针

DWORD *dwAddress; // IP地址

WSAData wsaData;

BOOL bRet;

if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)

{

return FALSE;

}

// 检查WinSock的版本

if (0x0202 != wsaData.wVersion)

{

//No WinSock version 2.2 support found

WSACleanup();

return false;

}

//使用inet_addr()以判定ping目标为地址还是名称

iaDest.s_addr = inet_addr(ip);

if (iaDest.s_addr == INADDR_NONE)

pHost = gethostbyname(ip);

else

pHost = gethostbyaddr((const char*) &iaDest, sizeof(struct in_addr),AF_INET);

if (pHost == NULL)

{

return FALSE;

}

// 拷贝IP地址

dwAddress = (DWORD*)(*pHost->h_addr_list);

HINSTANCE hIcmp=LoadLibrary("ICMP.dll");

if(hIcmp==0)

{

return FALSE;

}

typedef HANDLE (WINAPI* pfnHV)(VOID);

typedef BOOL (WINAPI* pfnBH)(HANDLE);

typedef DWORD (WINAPI* pfnDHDPWPipPDD)(HANDLE, DWORD, LPVOID, WORD,PIP_OPTION_INFORMATION, LPVOID, DWORD, DWORD);

pfnHV pIcmpCreateFile;

pfnBH pIcmpCloseHandle;

pfnDHDPWPipPDD pIcmpSendEcho;

pIcmpCreateFile = (pfnHV)GetProcAddress(hIcmp, "IcmpCreateFile");

pIcmpCloseHandle = (pfnBH)GetProcAddress(hIcmp, "IcmpCloseHandle");

pIcmpSendEcho = (pfnDHDPWPipPDD)GetProcAddress(hIcmp, "IcmpSendEcho");

if(pIcmpCreateFile==NULL)

{

return FALSE;

}

if(pIcmpCloseHandle==NULL)

{

return FALSE;

}

if(pIcmpSendEcho==NULL)

{

return FALSE;

}

HANDLE hIP=pIcmpCreateFile();

if(hIP==INVALID_HANDLE_VALUE)

{

return FALSE;

}

char acPingBuffer[64];

memset(acPingBuffer, 0, 64);

memset(acPingBuffer, '\xAA', sizeof(acPingBuffer));

PICMP_ECHO_REPLY pIpe = (PICMP_ECHO_REPLY)GlobalAlloc( GMEM_FIXED | GMEM_ZEROINIT, sizeof(ICMP_ECHO_REPLY) + sizeof(acPingBuffer));

if(pIpe==0)

{

return FALSE;

}

pIpe->Data = acPingBuffer;

pIpe->DataSize = sizeof(acPingBuffer);

DWORD dwStatus = pIcmpSendEcho(hIP, *dwAddress, acPingBuffer, sizeof(acPingBuffer), NULL, pIpe, sizeof(ICMP_ECHO_REPLY) + sizeof(acPingBuffer), 1000);

if(dwStatus!=0)

{

bRet=TRUE;

}else{

bRet=FALSE;

}

//TRACE("Addr: %d.%d.%d.%d\r\n", int(LOBYTE(LOWORD(pIpe->Address))),int(HIBYTE(LOWORD(pIpe->Address))), int(LOBYTE(HIWORD(pIpe->Address))), int(HIBYTE(HIWORD(pIpe->Address))));

//TRACE("RTT: %dms, TTL:%d\r\n", int(pIpe->RoundTripTime), int(pIpe->Options.Ttl));

GlobalFree(pIpe);

FreeLibrary(hIcmp);

WSACleanup();

return bRet;

}

bool bret1 = IsActive("baidu.com");

bool bret2 = IsActive("192.168.0.72");

TRACE("1. %s\r\n2. %s\r\n",(bret1?"true":"false"), (bret2?"true":"false"));

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