static void Main(string[] args)
{
PreCon.FreeTcpPort(); //finds a free port
PreCon.PreSock(); //tries to connect to each address
Server.SetCommands(); //sets the server's commands
WmiFuncs.AddPaths(Environment.MachineName); //saves the server's local shared folders
byte[] bytes = new byte[4096];
IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName());
for (int i = 0; i < ipHostInfo.AddressList.Length; i++)
{
if (ipHostInfo.AddressList[i].ToString().StartsWith("192"))
{
ipAddress = ipHostInfo.AddressList[i];
}
}
// builds the socket and starts listening for clients
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port);
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
listener.Bind(localEndPoint);
string pass = SetPassword();
Console.WriteLine("listening on ip: " + ipAddress + " port: " + port);
listener.Listen(3);
while (true)
{
Socket handler = listener.Accept();
Console.WriteLine("A client with the ip of " + handler.RemoteEndPoint + " has connected");
//once a new client is connected, starts the socket maintenance function for him on a separate thread
Thread t = new Thread(() => KeepInTact(handler, pass));
t.Start();
}
}
public static void SetCommands()
{
Func <string[], string>[] methods = //a dictionary of function names and their delegates
{
targets => WmiFuncs.GetIp(),
targets => WmiFuncs.FreeSpace(),
targets => WmiFuncs.ShowProcess(),
targets => Disconnect(),
targets => WmiFuncs.KillProcess(targets[1]),
targets => Directory.GetCurrentDirectory(),
targets => WmiFuncs.RemoteProcess(targets[1]),
targets => WmiFuncs.ShareFolder(targets[2], targets[1]),
targets => WmiFuncs.ListFiles(targets[1]),
targets => WmiFuncs.ShowFolders(),
targets => File.ReadAllText(Environment.CurrentDirectory + "\\info.txt"),
targets => File.ReadAllText(Environment.CurrentDirectory + "\\about.txt"),
targets => WmiFuncs.CopyFile(pass.Dequeue(), targets[2], targets[1]),
targets => WmiFuncs.CreateFile(targets[2], targets[1]),
targets => WmiFuncs.DeleteFile(targets[2], targets[1]),
targets => WmiFuncs.ClientList(),
targets => WmiFuncs.CPUName(),
targets => WmiFuncs.TotalRAM(),
targets => WmiFuncs.GetWinVer()
};
for (int i = 0; i < funcs.Length; i++)
{
dict.Add(funcs[i], methods[i]);
}
}
public static string CommandOutput(string command, Socket sc)
{
//Console.WriteLine("message: " + command);
string output = "";
bool flag = false;
string[] pararms = Interpreter(command); //interprets the command and returns a list of parameters
if (pararms.Length >= 2)
{
foreach (KeyValuePair <string, Func <string[], string> > pair in dict)
{
if (pair.Key == pararms[0]) //finds the right dunction
{
flag = true;
try
{
if (sc != null)
{
pass.Enqueue(sc); //enqueues the socket to check from which client was the message sent
}
WmiFuncs.TryCon(pararms[pararms.Length - 1]); //tries to build the connection scope
output = pair.Value(pararms); //executes and gets the value of the function
}
catch
{
output = "an error occurred, please check your parameters\n";// + e.ToString();
}
}
}
}
if (flag) //if the command succceeded, the output is returned
{
return(output + "stoprightnow");
}
else if (pararms[0] != "command failed")
{
//if the command name is wrong, the most similar command is suggested to the client
return("no such command as --> " + pararms[0] + MostSimilar(pararms[0]) + "stoprightnow");
}
else
{
//for any other reason, the output is as follows
return("couldn't execute your command, please check your parametersstoprightnow");
}
}
private static void KeepInTact(Socket s, string pass)
{
byte[] bytes = new byte[4096];
bool flag = false;
int bytesRec;
try
{
while (!flag) //checks if the password matches with the saved one
{
bytesRec = s.Receive(bytes);
data = Encoding.Unicode.GetString(bytes, 0, bytesRec);
if (data == pass)
{
SendPackets("good to go", s);
flag = true;
}
else
{
SendPackets("wrong password", s);
}
}
bytesRec = s.Receive(bytes); //recieves data from the client to save
data = Encoding.Unicode.GetString(bytes, 0, bytesRec);
char[] sep = { '+' };
string[] datas = data.Split(sep);
Client.CheckAndAdd(s, datas[0], datas[1]);
WmiFuncs.AddPaths(datas[0]);
while (true) //and starts listenung to incoming requests
{
bytesRec = s.Receive(bytes);
data = Encoding.Unicode.GetString(bytes, 0, bytesRec);
data = Server.CommandOutput(data, s);
SendPackets(data, s);
if (data.Contains("disconnect"))
{
break; // ends communication
}
}
}
catch (SocketException)
{
Console.WriteLine("Client has disconnected");
}
}