public object Create(object parent, object configContextObj, XmlNode section)
{
// if called through client config don't even load HttpRuntime
if (!HandlerBase.IsServerConfiguration(configContextObj))
{
return(null);
}
// unwrap the parent object
NameValueCollection nvcParent = null;
if (parent != null)
{
nvcParent = ((ClientTargetConfiguration)parent).Configuration;
}
// deleage the real work to NameValueSectionHandler
ClientTargetNameValueHandler nvcHandler = new ClientTargetNameValueHandler();
NameValueCollection nvcResult = (NameValueCollection)nvcHandler.Create(nvcParent, configContextObj, section);
if (nvcResult == null)
{
return(null);
}
//
// Return config data wrapped in an internal class, so
// semi-trusted code cannot leak configuration data.
//
ClientTargetConfiguration clientTargetResult = new ClientTargetConfiguration();
clientTargetResult.Configuration = nvcResult;
return(clientTargetResult);
}
internal static string GetUserAgent(HttpRequest request)
{
if (request.ClientTarget.Length > 0)
{
// Lookup ClientTarget section in config.
ClientTargetConfiguration clientTargetConfig = (ClientTargetConfiguration)request.Context.GetConfig("system.web/clientTarget");
NameValueCollection clientTargetDictionary = null;
if (clientTargetConfig != null)
{
clientTargetDictionary = clientTargetConfig.Configuration;
}
if (clientTargetDictionary != null)
{
// Found it
// Try to map the alias
string useUserAgent = clientTargetDictionary[request.ClientTarget];
if (useUserAgent != null)
{
return(useUserAgent);
}
}
throw new HttpException(HttpRuntime.FormatResourceString(SR.Invalid_client_target, request.ClientTarget));
}
// Protect against attacks with long User-Agent headers
String userAgent = request.UserAgent;
if (userAgent != null && userAgent.Length > 256)
{
userAgent = String.Empty;
}
return(userAgent);
}