使用 SendARP 查询 MAC 地址


使用 SendARP 查询 MAC 地址
通过 IP Helper API 中的 SendARP 发送 ARP 请求来获取 MAC 地址，简单方便，缺点是不能跨越网关。
C++代码
#include
#include
#include
#pragma comment(lib , "IpHlpApi.lib")
#pragma comment(lib , "WS2_32.lib")
int main(int argc,char * argv[])
{
 int iReturn;
 DWORD dwIP;
 BYTE byMAC[6];
 DWORD dwLen;
 WSADATA WsaData;
 WSAStartup(MAKEWORD(2, 0), &WsaData);
 __try 
 {
 printf("IP2MAC Ver 1.0 -- Get MAC address from IP address though ARP request.

");
 if (argc != 2)
 {
 printf("Usage: %s 
", argv[0]);
 __leave;
 }
 dwIP = inet_addr(argv[1]);
 if (dwIP == INADDR_NONE)
 {
 printf("Invalid IP address: %s.
", argv[1]);
 __leave;
 }
 // 发送ARP查询包获得 MAC 地址
 dwLen = 6;
 iReturn = SendARP(dwIP, 0, (PULONG) &byMAC, &dwLen);
 if (iReturn != NO_ERROR)
 {
 printf("Error: Send ARP request. 
Be sure that connectting to %s need no gateway.
", argv[1]);
 __leave;
 }
 printf("%.2X-%.2X-%.2X-%.2X-%.2X-%.2X
",
 byMAC[0],
 byMAC[1],
 byMAC[2],
 byMAC[3],
 byMAC[4],
 byMAC[5]);
 }
 __finally
 {
 WSACleanup();
 }
 return 0;
}

补充：综合编程 , 安全编程 ,