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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Security.Authentication;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;
using System.Web.Http.Controllers;
using Tango.Logging;
using Tango.Transport.Web;
using Tango.Web.Security;
namespace Tango.Web.Controllers
{
public class TangoController : ApiController
{
protected LogManager LogManager { get; private set; }
public TangoController()
{
LogManager = LogManager.Default;
}
public override async Task<HttpResponseMessage> ExecuteAsync(HttpControllerContext context, CancellationToken cancellationToken)
{
string controllerName = String.Empty;
string actionName = String.Empty;
try
{
var routeData = HttpContext.Current.Request.RequestContext.RouteData;
actionName = routeData.Values["action"].ToString();
controllerName = routeData.Values["controller"].ToString();
}
catch { }
try
{
String request = String.Empty;
try
{
request = context.Request.Content.ReadAsStringAsync().Result;
}
catch { }
LogManager.Log($"Request Received on {controllerName + "/" + actionName}: \n{request}");
OnRequestArrived(context.Request);
var result = await base.ExecuteAsync(context, cancellationToken);
return result;
}
catch (Exception ex)
{
LogManager.Log(ex, $"An error occurred while processing the request message on {controllerName + "/" + actionName}.");
HttpStatusCode code = HttpStatusCode.InternalServerError;
HttpResponseException httpException = null;
if (ex is ArgumentException || ex is InvalidDataException)
{
code = HttpStatusCode.BadRequest;
}
else if (ex is AuthenticationException || ex is TokenExpiredException)
{
code = HttpStatusCode.Unauthorized;
}
else if (ex is KeyNotFoundException)
{
code = HttpStatusCode.NotFound;
}
else if (ex is HttpResponseException httpResponseException)
{
httpException = httpResponseException;
}
else
{
httpException = new HttpResponseException(Request.CreateErrorResponse(code, ex.FlattenMessage(), ex));
}
#if DEBUG
throw httpException;
#else
//Remove Stack trace
var expandedException = httpException.Response.Content as System.Net.Http.ObjectContent<System.Web.Http.HttpError>;
if (expandedException != null)
{
var expandedExceptionValues = expandedException.Value as HttpError;
if (expandedExceptionValues != null)
{
expandedExceptionValues["StackTrace"] = "";
}
}
#endif
throw httpException;
}
}
protected virtual void OnRequestArrived(HttpRequestMessage request)
{
//Do nothing.
}
}
public class TangoController<T> : TangoController where T : class
{
public WebToken<T> RequestToken { get; set; }
protected override void OnRequestArrived(HttpRequestMessage request)
{
base.OnRequestArrived(request);
var authorizationHeader = request.Headers.Authorization;
if (authorizationHeader != null)
{
try
{
RequestToken = WebToken<T>.FromToken(authorizationHeader.Parameter != null ? authorizationHeader.Parameter : authorizationHeader.ToString());
}
catch (Exception ex)
{
throw new HttpParseException("Could not parse the provided token embedded object.", ex);
}
}
}
}
}
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