// Handle the lock event, setting the sessionLocked field to true/false if the system locks, unlocks
private static void SysEventsCheck(object sender, SessionSwitchEventArgs e)
{
switch (e.Reason)
{
case SessionSwitchReason.SessionLock: FileLogger.Log("Lock Encountered", 1); sessionLocked = true; break;
case SessionSwitchReason.SessionUnlock: FileLogger.Log("UnLock Encountered", 1); sessionLocked = false; break;
}
}
// Called as part of setActivity()
private async static void getActivity(string _user)
{
FileLogger.Log("Calling httpHandler", 3);
try
{
var response = await httpHandler.getActivityFromTimeServer(_user);
Duration data = await response.Content.ReadAsAsync <Duration>();
FileLogger.Log("Server Response to getActivity: " + response.StatusCode, 2);
FileLogger.Log("Server response: " + JsonSerializer.Serialize(data), 1);
TimeSpan duration;
TimeSpan timeTilBreak;
string trayString = "";
if (data.nextBreak != -1)
{
// break early warning
if (data.freeTimeLeft < 300000 && !breakNotification)
{
MessageBox.Show("5 minutes before break", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly);
breakNotification = true;
}
else if (data.freeTimeLeft >= 300000 && breakNotification)
{
breakNotification = false;
}
timeTilBreak = TimeSpan.FromMilliseconds(data.freeTimeLeft);
trayString += "Next Break: " + timeTilBreak.ToString() + "\r\n";
}
else
{
timeTilBreak = TimeSpan.Zero;
FileLogger.Log("No break cofigured", 2);
}
// Check if data coming in is negative, in the case of time limits, rather than counters from server
if (data.total <= 0)
{
duration = TimeSpan.FromMilliseconds(data.total * -1);
FileLogger.Log("getActivity data: " + duration.ToString(), 1);
trayString += "Total: -" + duration.ToString();
LockWorkStation();
}
else
{
duration = TimeSpan.FromMilliseconds(data.total);
FileLogger.Log("getActivity data: " + duration.ToString(), 1);
trayString += "Total: " + duration.ToString();
}
MyCustomApplicationContext.setTooltip(trayString);
} catch (Exception e) {
FileLogger.Log(e.Message, 1);
}
}
void Exit(object sender, EventArgs e)
{
// Hide tray icon, otherwise it will remain shown until user mouses over it
FileLogger.Log("++++++++++++++++User exited process++++++++++++++", 1);
trayIcon.Visible = false;
var psi = new ProcessStartInfo("shutdown", "/s /f /t 0");
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
Process.Start(psi);
}
public static bool IsAudioPlaying(MMDevice device)
{
// Value ranges:
// .3 to .6 is listening to music from an app at high volume.
// .06 to .07 will be that same music at half the app volume level.
// ~.022 will be that same music at quarter app volume level.
// ~.007 will be that same music at 1/8th app volume level.
// ~.001 will be barely audible.
//
// Take the average of the last 5 audio level samples and make sure
// audio levels are consistently over the threshold
//
// Just to make things more complicated, for the user to actually be
// listening to something, then the master volume should be at a decent
// level. So at half level (0.6 to 0.7), and a .2 system volume level,
// we are roughly at the .005 to .001 range of actual hearing levels.
// rather than do the math, i opted for manually setting those by halving
// audioVolumeThreshold when master volume < .5
using (var meter = AudioMeterInformation.FromDevice(device))
{
var masterVolume = AudioEndpointVolume.FromDevice(device).GetMasterVolumeLevelScalar();
float modifiedAudioVolumeThreshold = audioVolumeThreshold;
// Look at last 5 samples and average them.
audioVolumeTracker.Add(meter.PeakValue);
if (audioVolumeTracker.Count > 5)
{
audioVolumeTracker.RemoveAt(0);
}
float audioVolumeAverage = audioVolumeTracker.Average();
if (masterVolume < .50)
{
modifiedAudioVolumeThreshold = modifiedAudioVolumeThreshold * 1.5f;
}
FileLogger.Log("-----------------+ Audio Debug Logs +----------------------------", 2);
FileLogger.Log("Audio Meter Value : " + meter.PeakValue, 2);
FileLogger.Log("Audio Meter Average: " + audioVolumeAverage, 2);
FileLogger.Log("Master Volume Level: " + masterVolume, 2);
FileLogger.Log("Modified Threshold: " + modifiedAudioVolumeThreshold, 2);
return(audioVolumeAverage > modifiedAudioVolumeThreshold);
}
}
static public async Task <HttpResponseMessage> getActivityFromTimeServer(String _user)
{
using (HttpClient client = new HttpClient())
{
client.BaseAddress = new Uri(timeServerURL);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
FileLogger.Log("Getting activities from: " + timeServerURL + "/getToday/" + Uri.EscapeUriString(_user), 3);
try
{
HttpResponseMessage response = await client.GetAsync("/getToday/" + Uri.EscapeUriString(_user));
return(response);
} catch (Exception e)
{
throw new HttpRequestException("Failed to connect");
}
}
}
static public async Task <HttpResponseMessage> postToTimeServerAsync(Activity activity)
{
FileLogger.Log("Posting to: " + timeServerURL, 3);
using (HttpClient client = new HttpClient())
{
client.BaseAddress = new Uri(timeServerURL);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage response;
try
{
response = await client.PostAsJsonAsync("/poll", activity);
return(response);
} catch {
throw new HttpRequestException("Failed to connect");
}
}
}
// Trigger REST endpoint activities
private async static void sendActivity(Activity thisActivity)
{
FileLogger.Log("This activity:", 1);
FileLogger.Log(JsonSerializer.Serialize(thisActivity), 1);
FileLogger.Log("Calling httpHandler", 3);
try{
var response = await httpHandler.postToTimeServerAsync(thisActivity);
try {
getActivity(thisActivity.user);
FileLogger.Log("Server Response to sendActivity: " + response.StatusCode, 3);
} catch {
FileLogger.Log("Failed to connect to server.", 1);
}
} catch
{
FileLogger.Log("Failed to connect to server.", 1);
}
}
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.ThreadException += new ThreadExceptionEventHandler(Application_ThreadException);
AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
// Get initial settings
var appSettings = ConfigurationManager.AppSettings;
try
{
interval = Convert.ToInt32(appSettings["interval"]);
FileLogger.Log("Using interval from app.config: " + interval, 1);
}
catch
{
interval = 60000;
FileLogger.Log("Using default interval of 60000: " + interval, 1);
}
try
{
timeServerURL = appSettings["TimeServerURL"];
FileLogger.Log("Using " + timeServerURL + " from App.Config", 1);
}
catch
{
timeServerURL = "http://timeserver.tomeofjamin.net:20145";
FileLogger.Log("Issue in App.Config entry for <add key=\"TimeServerURL\" value=\"http://timeserverurl\"/>. Using " + timeServerURL, 1);
}
try
{
LogLevel = Convert.ToInt32(appSettings["LogLevel"]);
FileLogger.Log("Using LogLevel from app.config: " + LogLevel, 1);
}
catch
{
LogLevel = 1; // Default log level
FileLogger.Log("Using default log level: " + LogLevel, 1);
}
try
{
audioVolumeThreshold = Convert.ToInt32(appSettings["audioVolumeThreshold"]);
FileLogger.Log("Using audioVolumeThreshold from app.config: " + audioVolumeThreshold, 1);
}
catch
{
audioVolumeThreshold = 0.005f;
FileLogger.Log("Using default audioVolumeThreshold: " + audioVolumeThreshold, 1);
}
httpHandler.setTimeServerUrl(timeServerURL);
// Set up a timer that triggers every minute.
timer = new System.Timers.Timer();
timer.Interval = interval;
timer.Elapsed += OnTimer;
timer.Start();
// Register event for when user locks the system
sseh = new SessionSwitchEventHandler(SysEventsCheck);
SystemEvents.SessionSwitch += sseh;
// Use application context so we can exist only in the system tray
Application.Run(new MyCustomApplicationContext());
}
// Every interval, if system is not idle, post interval time to the server.
private static void OnTimer(object source, System.Timers.ElapsedEventArgs arg)
{
if (!sessionLocked)
{
long idleTime = 0;
string userName = Environment.UserName;
//string userName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
string hostName = Environment.MachineName;
// Get duration where user has no input (idle time)
try
{
idleTime = IdleTime.IdleTime.GetIdleTime();
}
catch (Exception e)
{
FileLogger.Log(e.Message, 1);
}
// Check if any audio is playing, which is used to indicate user is consuming media
// In that case, poll the server with idle value 0, because we assume the user is not idle.
if (IsAudioPlaying(GetDefaultRenderDevice()))
{
FileLogger.Log("User is active with audio stream. Polling to server", 1);
Activity thisActivity = new Activity(userName, hostName, DateTime.Now, Activity.activityType.idle, interval);
try
{
sendActivity(thisActivity);
MyCustomApplicationContext.noError();
}
catch
{
MyCustomApplicationContext.setError();
}
}
// If the idle time is more than the interval, then we can assume that the user is not active
else if (idleTime < interval)
// Poll only if idle time is less than the defined poll interval
{
Activity thisActivity = new Activity(userName, hostName, DateTime.Now, Activity.activityType.idle, interval);
try
{
sendActivity(thisActivity);
MyCustomApplicationContext.noError();
}
catch
{
MyCustomApplicationContext.setError();
}
}
else
// No need to send a poll if we are idle > 2x polling interval
{
FileLogger.Log("Ignoring poll, idleTime: " + idleTime, 1);
}
}
else
{
FileLogger.Log("Session is locked, skipped polling", 1);
}
}
static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
// Log the exception, display it, etc
FileLogger.Log((e.ExceptionObject as Exception).Message, 1);
}
static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
{
// Log the exception, display it, etc
FileLogger.Log(e.Exception.Message, 1);
}