public static void Log404Error(string msg)
{
if (MemCache.IsLoggingErrors)
{
Log404PageNotFound.Insert(DateTime.UtcNow, CurrentUrl, msg);
}
}
public static void OnApplicationError(HttpApplication application)
{
try
{
var path = HttpContext.Current.Request.Path;
var url = path;
var query = HttpContext.Current.Request.QueryString.ToString();
if (!IsNullOrEmpty(query))
{
url = url + '?' + query;
}
// check for embedded url
if (EmbeddedUrlRegex.Match(path)
.Success) // redirect to real url
{
application.Response.Redirect(Uri.UriSchemeHttp + "://" + url.Substring(1), true);
return;
}
if (application.Context.Error != null)
{
if (
application.Context.Error.Message.StartsWith("A potentially dangerous Request.Path value was detected from the client", StringComparison.Ordinal) &&
HttpUtility.UrlDecode(path) == path)
{
application.Response.RedirectPermanent(
HttpContext.Current.Request.Url.AbsoluteUri, true);
}
else
{
Log404PageNotFound.Log("Global.asax Application_Error: " + application.Context.Error.Message);
}
}
else
{
Log404PageNotFound.Log("Global.asax Application_Error");
}
}
catch
{
// ignored
} // no exceptions may be thrown here
}
