/// <summary>
///
/// </summary>
/// <param name="filterContext"></param>
public override void OnAuthorization(AuthorizationContext filterContext)
{
if (filterContext == null)
{
throw new ArgumentNullException("filterContext");
}
var actionDescriptor = filterContext.ActionDescriptor;
#region Check whether it's an anonymous action
if (actionDescriptor.ControllerDescriptor.IsDefined(typeof(AllowAnonymousAttribute), true) ||
actionDescriptor.IsDefined(typeof(AllowAnonymousAttribute), true))
{
//Allow Anonymous
return;
}
#endregion
var values = filterContext.RouteData.Values;
var instCode = Convert.ToString(values["institution"]);
var webHelper = new WebHelper(filterContext.HttpContext);
// If user is not logged in (authenticated) yet,
var IdentityUser = webHelper.GetCurrentlyLoggedInUser();
//if (!filterContext.HttpContext.Request.IsAuthenticated)
if (IdentityUser == null || filterContext.HttpContext.Session?.IsNewSession == true)
{
// It's not anonymous, so force user to login
webHelper.LogOut();
filterContext.Result = MvcUtility.GetLoginPageResult(instCode);
return;
}
var area = values["area"];
string privilegeName = string.Format("{0}-{1}-{2}",
actionDescriptor.ActionName,
actionDescriptor.ControllerDescriptor.ControllerName,
area);
if (Utilities.INST_DEFAULT_CODE.Equals(instCode, StringComparison.OrdinalIgnoreCase))
{
#region Check whether to allow Core access the action
if (!actionDescriptor.ControllerDescriptor.IsDefined(typeof(AllowAccessToParentAttribute), true) &&
!actionDescriptor.IsDefined(typeof(AllowAccessToParentAttribute), true))
{
// bounce
filterContext.Result = MvcUtility.GetPageResult("TenantsOnlyAllowed", "Error", "", instCode, new Dictionary <string, object> {
{ "actionAttempted", filterContext.HttpContext.Request.Url.AbsoluteUri }
});
return;
}
#endregion
}
// At this point, we have established that we have a logged-in user. So...
#region Authorize at Privilege level
var userPrivList = webHelper.LoggedInUsersPrivilegesDict;
//This should never be true under normal circumstances, 'cos a properly logged-in user
// should have at least one user privllege
if (userPrivList == null)
{
webHelper.LogOut();
filterContext.Result = MvcUtility.GetLoginPageResult(instCode);
return;
}
// OK. So the user has some privileges. So...
if (!userPrivList.ContainsKey(privilegeName))
{
//The generalized case of the above 'GetData' trick
var point = actionDescriptor.GetCustomAttributes(typeof(ValidateUsingPrivilegeForActionAttribute), true)
.Cast <ValidateUsingPrivilegeForActionAttribute>().FirstOrDefault();
if (point != null)
{
foreach (var actionName in point.ActionNames)
{
if (userPrivList.ContainsKey(string.Format("{0}-{1}-{2}",
actionName, actionDescriptor.ControllerDescriptor.ControllerName, area)))
{
return;
}
}
}
filterContext.Result = MvcUtility.GetPageResult("DenyAccess", "Error", "", instCode, new System.Collections.Generic.Dictionary <string, object> {
{ "actionAttempted", privilegeName }
});
return;
}
#endregion
// If we get to this point, then the user authorized to access this action
}
/// <summary>
///
/// </summary>
/// <param name="filterContext"></param>
public void OnException(ExceptionContext filterContext)
{
if (!filterContext.ExceptionHandled)
{
filterContext.ExceptionHandled = true;
bool isFatal = false;
try
{
bool doLogout = false;
var values = filterContext.RouteData.Values;
string instCode = Convert.ToString(values["institution"]);
try
{
var _instCode = WebUtilities.InstitutionCode ?? Utilities.INST_DEFAULT_CODE;
if (!instCode.Equals(_instCode, StringComparison.OrdinalIgnoreCase))
{
instCode = Utilities.INST_DEFAULT_CODE;
doLogout = true;
}
}
catch (LogOutUserException)
{
doLogout = true;
}
catch (Exception) //(GeneralException ex) when (ex.ExceptionType == ExceptionType.UnidentifiedInstitutionCode)
{
instCode = Utilities.INST_DEFAULT_CODE;
}
// When view is not found, it usually throws
//Exception Details: System.InvalidOperationException:
// The view '~/Views/my-category/my-article-with-long-name.aspx' or its master could not be found. The following locations were searched: ~/Views/my-category/my-article-with-long-name.aspx
if (filterContext.Exception is InvalidOperationException && filterContext.Exception.Message.Contains("The view '~/Views"))
{
isFatal = true;
filterContext.Result = MvcUtility.GetPageResult("ViewNotFound", "Error", "", instCode);
return;
}
var urlAccessed = filterContext.RequestContext.HttpContext.Request.RawUrl; // string.Format("/{0}{1}/{2}/{3}", instCode, string.IsNullOrWhiteSpace(area) ? "" : ("/" + area), controller, action);
string area = Convert.ToString(values["area"]);
string controller = Convert.ToString(values["controller"]);
string action = Convert.ToString(values["action"]);
var genEx = filterContext.Exception as GeneralException;
if (genEx != null)
{
if (genEx.ExceptionType == ExceptionType.UnidentifiedInstitutionCode)
{
instCode = Utilities.INST_DEFAULT_CODE;
filterContext.Controller.TempData[ErrorMessageModel.ErrorMessageKey] = new ErrorMessageModel("Invalid Url. Please cross-check.", controller, action)
{
ErrorType = ExceptionType.UnidentifiedInstitutionCode,
AreaName = area,
FromUrl = urlAccessed,
ResponseCode = HttpStatusCode.NotFound,
RenderErrorPageFully = true,
};
}
else if (genEx.ExceptionType == ExceptionType.DatabaseRelated)
{
filterContext.Controller.TempData[ErrorMessageModel.ErrorMessageKey] = new ErrorMessageModel("A database error has occurred. Contact the administrator", controller, action)
{
ErrorType = ExceptionType.DatabaseRelated,
AreaName = area,
FromUrl = urlAccessed,
ResponseCode = HttpStatusCode.InternalServerError,
};
}
else
{
filterContext.Controller.TempData[ErrorMessageModel.ErrorMessageKey] = new ErrorMessageModel(genEx, controller, action)
{
AreaName = area,
FromUrl = urlAccessed
};
}
filterContext.Result = MvcUtility.GetPageResult("Index", "Error", "", instCode);
return;
}
if (doLogout || filterContext.Exception is LogOutUserException)
{
WebUtilities.LogOut();
filterContext.Result = MvcUtility.GetLoginPageResult(instCode);
}
else
{
var dbExType = typeof(System.Data.Common.DbException);
if (dbExType.IsAssignableFrom(filterContext.Exception.GetType()) ||
(filterContext.Exception.GetBaseException() != null && dbExType.IsAssignableFrom(filterContext.Exception.GetBaseException().GetType())))
{
filterContext.Controller.TempData[ErrorMessageModel.ErrorMessageKey] = new ErrorMessageModel("A database error has occurred. Contact the administrator", controller, action)
{
ErrorType = ExceptionType.DatabaseRelated,
AreaName = area,
FromUrl = urlAccessed,
ResponseCode = HttpStatusCode.InternalServerError,
};
}
else if (filterContext.Exception is HttpAntiForgeryException)
{
filterContext.Controller.TempData[ErrorMessageModel.ErrorMessageKey] = new ErrorMessageModel("Looks like this is a cross-site request forgery. We can't find the token.", controller, action)
{
AreaName = area,
FromUrl = urlAccessed
};
}
else
{
filterContext.Controller.TempData[ErrorMessageModel.ErrorMessageKey] = new ErrorMessageModel(filterContext.Exception, controller, action)
{
AreaName = area,
FromUrl = urlAccessed
};
}
filterContext.Result = MvcUtility.GetPageResult("Index", "Error", "", instCode);
}
}
finally
{
Utilities.Logger.Log(filterContext.Exception, isFatal);
}
}
}