// 局域网远程唤醒(Wakeup On LAN) -- 发送一个Magic Packet到某个MAC地址
// Magic Packet：UDP广播包，端口不限，数据是FF-FF-FF-FF-FF-FF加16个MAC
// 编译：cl sendmagic.cpp ws2_32.lib #include <windows.h>
#include <stdio.h> int main(int argc, char *argv[])
{
//检查命令行参数
if(argc!=2)
{
printf("Wakeup your PC on LAN! by CJ<4uto@163.com>\n");
printf("Usage: %s <MAC address>\n", argv[0]);
printf("Example: %s 00-D0-4C-BF-52-BA", argv[0]);
return 0;
} //检查MAC地址是否正确
for (char * a=argv[1]; *a; a++)
if (*a!='-' && !isxdigit(*a))
{
fprintf(stderr, "MAC Adresse must be like this: 00-D0-4C-BF-52-BA");
return 1;
} int dstaddr[6];
int i=sscanf(argv[1], "%2x-%2x-%2x-%2x-%2x-%2x",
&dstaddr[0], &dstaddr[1], &dstaddr[2], &dstaddr[3], &dstaddr[4], &dstaddr[5]);
if (i!=6)
{
fprintf(stderr, "Invalid MAC Adresse!");
return 1;
} unsigned char ether_addr[6];
for (i=0; i<6; i++)
ether_addr[i]=dstaddr[i]; //构造Magic Packet
u_char magicpacket[200];
memset(magicpacket, 0xff, 6);
int packetsize=6;
for (i=0; i<16; i++)
{
memcpy(magicpacket+packetsize, ether_addr, 6);
packetsize+=6;
} //启动WSA
WSADATA WSAData;
if (WSAStartup( MAKEWORD(2, 0), &WSAData)!=0)
{
fprintf(stderr, "WSAStartup failed: %d\n", GetLastError());
return 1;
} //创建socket
SOCKET sock=socket(AF_INET, SOCK_DGRAM, 0);
if (sock==INVALID_SOCKET)
{
fprintf(stderr, "Socket create error: %d\n", GetLastError());
return 1;
} //设置为广播发送
BOOL bOptVal=TRUE;
int iOptLen=sizeof(BOOL);
if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char*)&bOptVal, iOptLen)==SOCKET_ERROR)
{
fprintf(stderr, "setsockopt error: %d\n", WSAGetLastError());
closesocket(sock);
WSACleanup();
return 1;
} sockaddr_in to;
to.sin_family=AF_INET;
to.sin_port=htons(0);
to.sin_addr.s_addr=htonl(INADDR_BROADCAST); //发送Magic Packet
if (sendto(sock, (const char *)magicpacket, packetsize, 0, (const struct sockaddr *)&to, sizeof(to))==SOCKET_ERROR)
fprintf(stderr, "Magic packet send error: %d", WSAGetLastError());
else
printf("Magic packet send!"); closesocket(sock);
WSACleanup();
return 0;
} 
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