Remote Wake-Up on LAN)

// Wake up on LAN-send a magic packet to a MAC address
// Magic packet: UDP broadcast package, unlimited port, data is FF-FF-FF-FF-FF-FF and 16 Mac
// Compile: CL sendmagic. cpp ws2_32.lib

# Include <windows. h>
# Include <stdio. h>

Int main (INT argc, char * argv [])
{
// Check command line parameters
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;
}

// Check whether the MAC address is correct
For (char * A = argv [1]; * A; A ++)
If (*! = '-'&&! Isxdigit (* ))
{
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];

// Construct 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;
}

// Start WSA
Wsadata;
If (wsastartup (makeword (2, 0), & wsadata )! = 0)
{
Fprintf (stderr, "wsastartup failed: % d/N", getlasterror ());
Return 1;
}

// Create a socket
Socket sock = socket (af_inet, sock_dgram, 0 );
If (sock = invalid_socket)
{
Fprintf (stderr, "socket create error: % d/N", getlasterror ());
Return 1;
}

// Set to broadcast transmission
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. sin_family = af_inet;
To. sin_port = htons (0 );
To. sin_addr.s_addr = htonl (inaddr_broadcast );

// Send 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;
}