Magic Packet

[Fareed Rizkalla]

Through some standards an experience, I tried to put this Magic Packet application together. However it doesn't wake up the machine, nor does the Wake On LAN tutorial on CP succeed in accomplishing the same task.

#include
#include

using std::cout;
using std::cin;
using std::endl;

void main()
{
char MAC[13];
cout << "Enter MAC Address for Machine to wake up:" << endl;
cin >> MAC;

cout << "Waking up..." << endl;

char L = (char)255;
cout << L << endl;

WSADATA WS2Info;
if (!WSAStartup(MAKEWORD(2,2), &WS2Info))
{
	SOCKET MagicPacket = socket(AF\_INET, SOCK\_DGRAM, IPPROTO\_UDP);
	if (MagicPacket != INVALID\_SOCKET)
	{
		hostent \*ResolveHost;
		char\* HostAddress = ""; // Target IP
		ResolveHost = gethostbyname(HostAddress);

		SOCKADDR\_IN Host;
		Host.sin\_family = AF\_INET;
		Host.sin\_port = 0;
		Host.sin\_addr.s\_addr = \*((unsigned long\*)ResolveHost->h\_addr);


		short MACconv\[6\];
		memset(MACconv, '\\0', 6);

		bool FirstDigit = true;
		int Pos = 0;

		for ( int i = 0; i < 12; i++)
		{
			//cout << MAC\[i\] << Pos << endl;
			switch(MAC\[i\])
			{
			case '0':
				if (FirstDigit)
				{
					MACconv\[Pos\] = 00000000 | MACconv\[Pos\];
					FirstDigit = false;
				}
				else
				{
					MACconv\[Pos\] = 00000000 | MACconv\[Pos\];
					FirstDigit = true;
					Pos += 1;
				}
				break;
			case '1':
				if (FirstDigit)
				{
					MACconv\[Pos\] = 00010000 | MACconv\[Pos\];
					FirstDigit = false;
				}
				else
				{
					MACconv\[Pos\] = 00000001 | MACconv\[Pos\];
					FirstDigit = true;
					Pos += 1;
				}
				break;
			case '2':
				if (FirstDigit)
				{
					MACconv\[Pos\] = 00100000 | MACconv\[Pos\];
					FirstDigit = false;
				}
				else
				{
					MACconv\[Pos\] = 00000010 | MACconv\[Pos\];
					FirstDigit = true;
					Pos += 1;
				}
				break;
			case '3':
				if (FirstDigit)
				{
					MACconv\[Pos\] = 00110000 | MACconv\[Pos\];
					FirstDigit = false;
				}
				else
				{
					MACconv\[Pos\] = 00000011 | MACconv\[Pos\];
					FirstDigit = true;
					Pos += 1;
				}
				break;
			case '4':
				if (FirstDigit)
				{
					MACconv\[Pos\] = 01000000 | MACconv\[Pos\];
					FirstDigit = false;
				}
				else
				{
					MACconv\[Pos\] = 00000100 | MACconv\[Pos\];
					FirstDigit = true;
					Pos += 1;
				}
				break;
			case '5':
				if (FirstDigit)
				{
					MACconv\[Pos\] = 00010000 | MACconv\[Pos\];
					FirstDigit = false

[Lost User]

Fareed Rizkalla wrote:

memcpy(WakeUpMsg, MACconv, 6); memcpy(WakeUpMsg, MACconv, 6); memcpy(WakeUpMsg, MACconv, 6); memcpy(WakeUpMsg, MACconv, 6);

All these lines are repeatedly copying the first 6 bytes of MACconv to the first 6 bytes of WakeUpMsg; you need to use some form of index or offset to fill the packet correctly.

It's time for a new signature.