public void Process(HttpListenerRequest request, HttpListenerResponse response)
{
try
{
if (request.HttpMethod != "GET")
{
response.StatusCode = 405;
response.StatusDescription = "Method Not Supported";
response.Close();
return;
}
string version = FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location).ProductVersion;
string status = GetStatusDescription();
string timestamp = DateTime.UtcNow.ToString("s", CultureInfo.InvariantCulture) + "Z";
FormatJsonResponse(response, version, status, timestamp);
}
catch (HttpListenerException hlex)
{
Supervisor.LogException(hlex, TraceEventType.Error, request.RawUrl);
response.StatusCode = 500;
response.StatusDescription = "Error Occurred";
response.Close();
}
}
private static void CompleteFailedTask(RevaleeTask task, Exception exception)
{
Supervisor.State.CompleteTask(task);
Supervisor.LogException(exception, TraceEventType.Error, task.CallbackUrl.OriginalString);
Supervisor.Telemetry.RecordWaitTime(CalculateWaitTime(DateTime.UtcNow, task));
Supervisor.Telemetry.RecordFailedCallback();
}
private static void ServiceCallbackUnhandledExceptionHandler(object sender, UnhandledExceptionEventArgs args)
{
try
{
Supervisor.LogException((Exception)args.ExceptionObject, TraceEventType.Critical, "Service encountered a critical error");
}
catch
{ }
}
private static void RunAsInteractive()
{
try
{
InteractiveExecution.Run();
}
catch (Exception ex)
{
try
{
Supervisor.LogException(ex, TraceEventType.Critical, "Service terminating on error");
}
catch { }
Environment.ExitCode = 1;
}
}
private static void RunAsService()
{
try
{
AppDomain.CurrentDomain.UnhandledException += ServiceCallbackUnhandledExceptionHandler;
ServiceBase.Run(new Revalee());
}
catch (Exception ex)
{
try
{
Supervisor.LogException(ex, TraceEventType.Critical, "Service encountered a critical error");
}
catch
{ }
}
}
protected override void OnStart(string[] args)
{
try
{
Supervisor.Start();
base.OnStart(args);
}
catch (Exception ex)
{
Supervisor.LogException(ex, TraceEventType.Critical, "Service failed to start");
using (var controller = new ServiceController(this.ServiceName))
{
controller.Stop();
}
this.ExitCode = 1;
}
}
public void Process(HttpListenerRequest request, HttpListenerResponse response)
{
try
{
if (request.HttpMethod != "PUT" && request.HttpMethod != "DELETE")
{
FinalizeRejectedResponse(request, response, 405, "Method Not Supported", null);
return;
}
if (request.QueryString.Count < 2)
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", null);
return;
}
Guid?guid = RetrieveGuidParameter(request);
if (!guid.HasValue)
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", null);
return;
}
Uri url = RetrieveUrlParameter(request);
if (url == null)
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", null);
return;
}
if (UrlContainsDangerousMarkup(url))
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", url);
return;
}
RevaleeUrlAuthorization authorization = Supervisor.Configuration.AuthorizedTargets.Match(url);
if (authorization == null)
{
// Keep all authorization errors homogeneous from the client perspective
RevaleeUrlAuthorization.ObfuscateExecutionTime();
FinalizeRejectedResponse(request, response, 401, "Unauthorized", url);
return;
}
if (!authorization.IsAuthorizedRequestSource(request.RemoteEndPoint.Address))
{
// Keep all authorization errors homogeneous from the client perspective
RevaleeUrlAuthorization.ObfuscateExecutionTime();
FinalizeRejectedResponse(request, response, 401, "Unauthorized", url);
return;
}
if (Supervisor.Work.IsOverloaded)
{
FinalizeRejectedResponse(request, response, 503, "Service Unavailable", url);
return;
}
RevaleeTask taskToCancel = RevaleeTask.Revive(DateTime.MinValue, url, DateTime.UtcNow, guid.Value, 0, null);
Supervisor.State.CancelTask(taskToCancel);
FinalizeAcceptedResponse(request, response, guid.Value, url);
return;
}
catch (HttpListenerException hlex)
{
Supervisor.LogException(hlex, TraceEventType.Error, request.RawUrl);
FinalizeRejectedResponse(request, response, 500, "Error Occurred", null);
return;
}
}
public void Process(HttpListenerRequest request, HttpListenerResponse response)
{
try
{
if (request.HttpMethod != "PUT")
{
FinalizeRejectedResponse(request, response, 405, "Method Not Supported", null);
return;
}
if (request.QueryString.Count < 2)
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", null);
return;
}
Uri url = RetrieveUrlParameter(request);
if (url == null)
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", null);
return;
}
DateTime?time = RetrieveTimeParameter(request);
if (!time.HasValue)
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", url);
return;
}
if (UrlContainsDangerousMarkup(url))
{
FinalizeRejectedResponse(request, response, 400, "Bad Request", url);
return;
}
RevaleeUrlAuthorization authorization = Supervisor.Configuration.AuthorizedTargets.Match(url);
if (authorization == null)
{
// Keep all authorization errors homogeneous from the client perspective
RevaleeUrlAuthorization.ObfuscateExecutionTime();
FinalizeRejectedResponse(request, response, 401, "Unauthorized", url);
return;
}
if (!authorization.IsAuthorizedRequestSource(request.RemoteEndPoint.Address))
{
// Keep all authorization errors homogeneous from the client perspective
RevaleeUrlAuthorization.ObfuscateExecutionTime();
FinalizeRejectedResponse(request, response, 401, "Unauthorized", url);
return;
}
if (Supervisor.Work.IsOverloaded)
{
FinalizeRejectedResponse(request, response, 503, "Service Unavailable", url);
return;
}
string authorizationCipher = RetrieveAuthorizationHeader(request);
RevaleeTask newTask = new RevaleeTask(time.Value, url, authorization.RetryCount, authorizationCipher);
Supervisor.State.AddTask(newTask);
FinalizeAcceptedResponse(request, response, newTask);
return;
}
catch (HttpListenerException hlex)
{
Supervisor.LogException(hlex, TraceEventType.Error, request.RawUrl);
FinalizeRejectedResponse(request, response, 500, "Error Occurred", null);
return;
}
}
