/// <summary>
/// Start listening server locali
/// </summary>
public static void StartListening()
{
// Data buffer for incoming data.
byte[] bytes = new Byte[1024];
// Establish the local endpoint for the socket.
// Dns.GetHostName returns the name of the
// host running the application.
IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddress;
if (IP.IsMatch(ipHostInfo.AddressList[0].ToString()))
{
ipAddress = ipHostInfo.AddressList[0];
}
else
{
ipAddress = ipHostInfo.AddressList[1];
}
try
{
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 8080);
// Create a TCP/IP socket.
Socket listener = new Socket(ipAddress.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
// Bind the socket to the local endpoint and
// listen for incoming connections.
listener.Bind(localEndPoint);
listener.Listen(1);
while (true)
{
// Start listening for connections.
// Program is suspended while waiting for an incoming connection.
Socket handler = listener.Accept();
data = null;
// שומר את ההודעה ושומר את הגודל של הבתים
int bytesRec = handler.Receive(bytes);
data = Encoding.ASCII.GetString(bytes, 0, bytesRec);
// שולח פידבק למנהל שההודעה התקבלה
handler.Send(Encoding.ASCII.GetBytes("1"));
// סוגר את הסוקט
handler.Shutdown(SocketShutdown.Both);
handler.Close();
WriteBlockingList.Write(data);
}
}
catch { }
}
/// <summary>
/// Run a while loop to check for new blocking URLs
/// And to apply blocking by time
/// </summary>
public static async void CheckFiles()
{
string hostsFile = File.ReadAllText(hostsPath);
while (true)
{
// if the hosts file was alternate, it will be erased and rewrite
if (!File.ReadAllText(hostsPath).Equals(hostsFile))
{
File.WriteAllText(hostsPath, string.Empty);
}
// directories in current directory
string[] directories = Directory.GetDirectories(Directory.GetCurrentDirectory());
// loop on each diectory
foreach (string directory in directories)
{
// files in the current directory
string[] files = Directory.GetFiles(directory);
// loo[ on each file
foreach (string file in files)
{
try
{
// using FileStream to try to open the file
// if the file is already opened, we continue to the catch { }
using FileStream stream = File.Open(file, FileMode.Open, FileAccess.Read, FileShare.None);
// if the file isn't open, we closing it
stream.Close();
// get the content of the file as plan text
string list = File.ReadAllText(file);
// blocking list by time
if (file.Contains("timed"))
{
// extrude the timing from the file
string blockingTime = list.Split("|")[0].Trim();
// extrude the blocking list from the file
string blockingList = list.Split("|")[1].Trim();
// beggining time to block
DateTime startTime = new DateTime(long.Parse(blockingTime.Split('>')[0]));
// end time to block
DateTime endTime = new DateTime(long.Parse(blockingTime.Split('>')[1]));
// format the time to get solid time such 18:35 -> 1835
long now = DateTime.Now.Hour * 100 + DateTime.Now.Minute;
long start = startTime.Hour * 100 + startTime.Minute;
long end = endTime.Hour * 100 + endTime.Minute;
// get the directory name, which is the user name
string userName = Path.GetFileName(Path.GetDirectoryName(file));
// normal blocking time when the start time is smaller
// than the end time
if (now >= start && now < end)
{
WriteBlockingList.TextAppend(blockingList.Split("\n"));
}
// for allow surfing instead of blocking
// for instance: 16:00 to 15:00
// you can surf from 15:00 to 15:59
else if (now >= start && now > end && end < start)
{
WriteBlockingList.TextAppend(blockingList.Split("\n"));
}
// when the user surfing is into the late hours of the night
// for example 20:30 to 02:30 and the now time is 00:25
// the access will be blocked
else if (now <= start && now < end && end < start)
{
WriteBlockingList.TextAppend(blockingList.Split("\n"));
}
// earse the content of the hosts file
else
{
WriteBlockingList.RemoveListFromHosts(blockingList, userName);
}
}
// regular blocking list
else
{
string[] fileContent = File.ReadAllLines(file);
WriteBlockingList.TextAppend(fileContent);
}
}
catch { }
}
}
// in order to check if the hosts file was changed
// the var hostsFile get the most recent hosts file content
hostsFile = File.ReadAllText(hostsPath);
// delay the loop for 10 seconds
await Task.Delay(10000);
}
}
