void IHttpModule.Init(HttpApplication context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (SupportDiscoverability)
{
HttpModuleRegistry.RegisterInPartialTrust(context, this);
}
OnInit(context);
}
private static IList GetAuthorizationHandlers(HttpContext context)
{
Debug.Assert(context != null);
object key = _authorizationHandlersKey;
IList handlers = (IList)context.Items[key];
if (handlers == null)
{
const int capacity = 4;
ArrayList list = null;
HttpApplication application = context.ApplicationInstance;
if (application is IRequestAuthorizationHandler)
{
list = new ArrayList(capacity);
list.Add(application);
}
foreach (IHttpModule module in HttpModuleRegistry.GetModules(application))
{
if (module is IRequestAuthorizationHandler)
{
if (list == null)
{
list = new ArrayList(capacity);
}
list.Add(module);
}
}
context.Items[key] = handlers = ArrayList.ReadOnly(
list != null
? list.ToArray(typeof(IRequestAuthorizationHandler))
: _zeroAuthorizationHandlers);
}
return(handlers);
}
private static IEnumerable <IRequestAuthorizationHandler> GetAuthorizationHandlers(HttpContextBase context)
{
Debug.Assert(context != null);
var key = _authorizationHandlersKey;
var handlers = (IEnumerable <IRequestAuthorizationHandler>)context.Items[key];
if (handlers == null)
{
handlers =
from app in new[] { context.ApplicationInstance }
let mods = HttpModuleRegistry.GetModules(app)
select new[] { app }.Concat(from object m in mods select m) into objs
from obj in objs
select obj as IRequestAuthorizationHandler into handler
where handler != null
select handler;
context.Items[key] = handlers = Array.AsReadOnly(handlers.ToArray());
}
return(handlers);
}
private static IList <IRequestAuthorizationHandler> GetAuthorizationHandlers(HttpContext context)
{
Debug.Assert(context != null);
object key = _authorizationHandlersKey;
IList <IRequestAuthorizationHandler> handlers = (IList <IRequestAuthorizationHandler>)context.Items[key];
if (handlers == null)
{
const int capacity = 4;
List <IRequestAuthorizationHandler> list = new List <IRequestAuthorizationHandler>(capacity);
HttpApplication application = context.ApplicationInstance;
IRequestAuthorizationHandler appReqHandler = application as IRequestAuthorizationHandler;
if (appReqHandler != null)
{
list.Add(appReqHandler);
}
foreach (IHttpModule module in HttpModuleRegistry.GetModules(application))
{
IRequestAuthorizationHandler modReqHander = module as IRequestAuthorizationHandler;
if (modReqHander != null)
{
list.Add(modReqHander);
}
}
if (list != null)
{
context.Items[key] = handlers = list.AsReadOnly();
}
}
return(handlers);
}
