public DisplayDetectData DetectDisplay(string id)
{
setutxent();
IntPtr utxp;
string user = null;
while ((utxp = getutxent()) != IntPtr.Zero)
{
utmpx utx = (utmpx)Marshal.PtrToStructure(utxp, typeof(utmpx));
if (utx.ut_type == USER_PROCESS && utx.ut_host[0] == '\0')
{
user = new string(utx.ut_user, 0, Array.IndexOf(utx.ut_user, '\0'));
}
}
endutxent();
if (user == null)
{
return(new DisplayDetectData());
}
else
{
return(new DisplayDetectData()
{
Detected = true,
User = user
});
}
}
public DisplayDetectData DetectDisplay(string id)
{
setutxent();
IntPtr utxp;
List <DisplayDetectData> displays = new List <DisplayDetectData>();
while ((utxp = getutxent()) != IntPtr.Zero)
{
utmpx utx = (utmpx)Marshal.PtrToStructure(utxp, typeof(utmpx));
if (utx.ut_type == USER_PROCESS && utx.ut_host[0] != 0)
{
string authority = GetAuthority(utx.ut_pid);
if (authority != null)
{
displays.Add(new DisplayDetectData()
{
User = new string(utx.ut_user, 0, Array.IndexOf(utx.ut_user, '\0')),
Display = new string(utx.ut_host, 0, Array.IndexOf(utx.ut_host, '\0')),
Authority = authority
});
}
}
}
endutxent();
switch (displays.Count)
{
case 0:
Console.Error.WriteLine("No displays found");
return(new DisplayDetectData());
case 1:
DisplayDetectData data = displays[0];
data.Detected = true;
return(data);
default:
List <VerificationState> verification;
if (VerificationStates.ContainsKey(id))
{
verification = VerificationStates[id];
}
else
{
verification = VerificationStates[id] = new List <VerificationState>();
}
if (verification.Any(s => !s.HasDenied))
{
VerificationState confirmed = verification.FirstOrDefault(s => s.HasConfirmed);
if (confirmed == null)
{
return(new DisplayDetectData()
{
Token = verification.First().Display.Token
});
}
else
{
VerificationStates.Remove(id);
return(new DisplayDetectData()
{
Detected = true,
User = confirmed.Display.User,
Display = confirmed.Display.Display,
Authority = confirmed.Display.Authority
});
}
}
else
{
verification.Clear();
string token = new Random().Next(1000000).ToString().PadLeft(6, '0');
ProcessStartInfo psi = new ProcessStartInfo();
psi.FileName = Assembly.GetEntryAssembly().CodeBase;
psi.Arguments = string.Concat("confirm ", token);
foreach (DisplayDetectData display in displays)
{
VerificationState state = new VerificationState()
{
Display = display,
SessionId = id,
HasConfirmed = false,
HasDenied = false
};
display.Token = token;
Process proc = Start(psi, display);
proc.EnableRaisingEvents = true;
proc.Exited += (sender, e) => {
if (proc.ExitCode == 0)
{
state.HasConfirmed = true;
foreach (VerificationState s in verification)
{
if (!s.Process.HasExited)
{
s.Process.Kill();
}
}
}
else
{
state.HasDenied = true;
}
};
state.Process = proc;
verification.Add(state);
}
return(new DisplayDetectData()
{
Token = token
});
}
}
}
