ICMP API实现ping

最新推荐文章于 2022-03-27 19:47:49 发布

s030702614

最新推荐文章于 2022-03-27 19:47:49 发布

阅读量1.6k

点赞数 1

分类专栏：编程之美文章标签： api winapi struct microsoft function buffer

编程之美专栏收录该内容

11 篇文章

订阅专栏

本文介绍了一个使用Windows下的ICMP API进行Ping操作的C语言程序示例。该程序通过动态加载ICMP.DLL并调用其导出函数实现发送ICMP回显请求并接收响应的功能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

//			 Microsoft ICMP API
//		在Build之前,必须加入ws2_32.lib库文件
#include <windows.h>
#include <winsock.h>
#include <stdio.h>
#include <string.h>


typedef struct tagIPINFO
{
	u_char Ttl;				// Time To Live
	u_char Tos;				// Type Of Service
	u_char IPFlags;			// IP flags
	u_char OptSize;			// Size of options data
	u_char FAR *Options;	// Options data buffer
}IPINFO, *PIPINFO;


typedef struct tagICMPECHO
{
	u_long Source;			// Source address
	u_long Status;			// IP status
	u_long RTTime;			// Round trip time in milliseconds
	u_short DataSize;		// Reply data size
	u_short Reserved;		// Unknown
	void FAR *pData;		// Reply data buffer
	IPINFO	ipInfo;			// Reply options
}ICMPECHO, *PICMPECHO;




// ICMP.DLL Export Function Pointers
HANDLE (WINAPI *pIcmpCreateFile)(VOID);
BOOL (WINAPI *pIcmpCloseHandle)(HANDLE);
DWORD (WINAPI *pIcmpSendEcho)
	(HANDLE,DWORD,LPVOID,WORD,PIPINFO,LPVOID,DWORD,DWORD);


//
//
void main(int argc, char **argv)
{
	WSADATA wsaData;			// WSADATA
	ICMPECHO icmpEcho;			// ICMP Echo reply buffer
	HANDLE hndlIcmp;			// LoadLibrary() handle to ICMP.DLL
	HANDLE hndlFile;			// Handle for IcmpCreateFile()
    LPHOSTENT pHost;			// Pointer to host entry structure
    struct in_addr iaDest;		// Internet address structure
	DWORD *dwAddress;			// IP Address
	IPINFO ipInfo;				// IP Options structure
	int nRet;					// General use return code
	DWORD dwRet;				// DWORD return code
	int x;


	// Check arguments
	if (argc != 2)
	{
		fprintf(stderr,"\nSyntax: pingi HostNameOrIPAddress\n");
		return;
	}


	// Dynamically load the ICMP.DLL
	hndlIcmp = LoadLibrary("ICMP.DLL");
	if (hndlIcmp == NULL)
	{
		fprintf(stderr,"\nCould not load ICMP.DLL\n");
		return;
	}
	// Retrieve ICMP function pointers
	pIcmpCreateFile = (HANDLE (WINAPI *)(void))
		GetProcAddress(hndlIcmp,"IcmpCreateFile");
	pIcmpCloseHandle = (BOOL (WINAPI *)(HANDLE))
		GetProcAddress(hndlIcmp,"IcmpCloseHandle");
	pIcmpSendEcho = (DWORD (WINAPI *)
		(HANDLE,DWORD,LPVOID,WORD,PIPINFO,LPVOID,DWORD,DWORD))
		GetProcAddress(hndlIcmp,"IcmpSendEcho");
	// Check all the function pointers
	if (pIcmpCreateFile == NULL		|| 
		pIcmpCloseHandle == NULL	||
		pIcmpSendEcho == NULL)
	{
		fprintf(stderr,"\nError getting ICMP proc address\n");
		FreeLibrary(hndlIcmp);
		return;
	}


	// Init WinSock
	nRet = WSAStartup(0x0101, &wsaData );
    if (nRet)
    {
        fprintf(stderr,"\nWSAStartup() error: %d\n", nRet); 
        WSACleanup();
		FreeLibrary(hndlIcmp);
        return;
    }
    // Check WinSock version
    if (0x0101 != wsaData.wVersion)
    {
        fprintf(stderr,"\nWinSock version 1.1 not supported\n");
        WSACleanup();
		FreeLibrary(hndlIcmp);
        return;
    }


	// Lookup destination
    // Use inet_addr() to determine if we're dealing with a name
    // or an address
    iaDest.s_addr = inet_addr(argv[1]);
    if (iaDest.s_addr == INADDR_NONE)
        pHost = gethostbyname(argv[1]);
    else
        pHost = gethostbyaddr((const char *)&iaDest, 
                        sizeof(struct in_addr), AF_INET);
	if (pHost == NULL)
	{
		fprintf(stderr, "\n%s not found\n", argv[1]);
        WSACleanup();
		FreeLibrary(hndlIcmp);
		return;
	}


	// Tell the user what we're doing
	printf("\nPinging %s [%s]", pHost->h_name,
			inet_ntoa((*(LPIN_ADDR)pHost->h_addr_list[0])));


	// Copy the IP address
	dwAddress = (DWORD *)(*pHost->h_addr_list);


	// Get an ICMP echo request handle        
	hndlFile = pIcmpCreateFile();
	for (x = 0; x < 4; x++)
	{
		// Set some reasonable default values
		ipInfo.Ttl = 255;
		ipInfo.Tos = 0;
		ipInfo.IPFlags = 0;
		ipInfo.OptSize = 0;
		ipInfo.Options = NULL;
		//icmpEcho.ipInfo.Ttl = 256;
		// Reqest an ICMP echo
		dwRet = pIcmpSendEcho(
			hndlFile,		// Handle from IcmpCreateFile()
			*dwAddress,		// Destination IP address
			NULL,			// Pointer to buffer to send
			0,				// Size of buffer in bytes
			&ipInfo,		// Request options
			&icmpEcho,		// Reply buffer
			sizeof(struct tagICMPECHO),
			5000);			// Time to wait in milliseconds
		// Print the results
		iaDest.s_addr = icmpEcho.Source;
		printf("\nReply from %s  Time=%ldms  TTL=%d",
				inet_ntoa(iaDest),
				icmpEcho.RTTime,
				icmpEcho.ipInfo.Ttl);
		if (icmpEcho.Status)
		{
			printf("\nError: icmpEcho.Status=%ld",
				icmpEcho.Status);
			break;
		}
	}
	printf("\n");
	// Close the echo request file handle
	pIcmpCloseHandle(hndlFile);
	FreeLibrary(hndlIcmp);
	WSACleanup();
}