public IHttpHandler GetHandler(HttpContext httpContext, string requestType, string url, string pathTranslated)
{
ExTraceGlobals.OehCallTracer.TraceDebug(0L, "OwaEventHandlerFactory.GetHandler");
string queryStringParameter = Utilities.GetQueryStringParameter(httpContext.Request, "ns");
string queryStringParameter2 = Utilities.GetQueryStringParameter(httpContext.Request, "ev");
ISessionContext sessionContext = OwaContext.Get(httpContext).SessionContext;
ExTraceGlobals.OehDataTracer.TraceDebug <string, string>(0L, "Request namespace: '{0}', event: '{1}'", queryStringParameter, queryStringParameter2);
OwaEventNamespaceAttribute owaEventNamespaceAttribute = OwaEventRegistry.FindNamespaceInfo(queryStringParameter);
if (owaEventNamespaceAttribute == null)
{
throw new OwaInvalidRequestException(string.Format(CultureInfo.InvariantCulture, "Namespace '{0}' doesn't exist", new object[]
{
queryStringParameter
}), null, this);
}
if (sessionContext != null && !sessionContext.IsProxy && !sessionContext.AreFeaturesEnabled(owaEventNamespaceAttribute.SegmentationFlags))
{
Utilities.EndResponse(httpContext, HttpStatusCode.Forbidden);
return(null);
}
OwaEventAttribute owaEventAttribute = owaEventNamespaceAttribute.FindEventInfo(queryStringParameter2);
if (owaEventAttribute == null)
{
throw new OwaInvalidRequestException(string.Format(CultureInfo.InvariantCulture, "Event '{0}' doesn't exist", new object[]
{
queryStringParameter2
}), null, this);
}
if (Globals.OwaVDirType == OWAVDirType.Calendar && !owaEventAttribute.AllowAnonymousAccess)
{
Utilities.EndResponse(httpContext, HttpStatusCode.BadRequest);
return(null);
}
if (sessionContext != null && !sessionContext.IsProxy && !sessionContext.AreFeaturesEnabled(owaEventAttribute.SegmentationFlags))
{
Utilities.EndResponse(httpContext, HttpStatusCode.Forbidden);
return(null);
}
OwaEventVerb owaEventVerb = OwaEventVerbAttribute.Parse(httpContext.Request.HttpMethod);
ExTraceGlobals.OehDataTracer.TraceDebug <string>(0L, "Request verb: {0}", httpContext.Request.HttpMethod);
if ((owaEventAttribute.AllowedVerbs & owaEventVerb) == OwaEventVerb.Unsupported)
{
ExTraceGlobals.OehTracer.TraceDebug <OwaEventVerb, OwaEventVerb>(0L, "Verb is not allowed, returning 405. Actual verb: {0}. Allowed: {1}.", owaEventVerb, owaEventAttribute.AllowedVerbs);
Utilities.EndResponse(httpContext, HttpStatusCode.MethodNotAllowed);
return(null);
}
OwaEventHandlerBase owaEventHandlerBase = (OwaEventHandlerBase)Activator.CreateInstance(owaEventNamespaceAttribute.HandlerType);
owaEventHandlerBase.EventInfo = owaEventAttribute;
owaEventHandlerBase.OwaContext = OwaContext.Current;
owaEventHandlerBase.Verb = owaEventVerb;
if (Globals.CollectPerRequestPerformanceStats)
{
OwaContext.Current.OwaPerformanceData.SetOehRequestType(owaEventNamespaceAttribute.HandlerType.Name, owaEventAttribute.IsAsync ? owaEventAttribute.BeginMethodInfo.Name : owaEventAttribute.MethodInfo.Name);
}
if (owaEventAttribute.IsAsync)
{
OwaContext.Current.TryReleaseBudgetAndStopTiming();
ExTraceGlobals.OehTracer.TraceDebug(0L, "Created async HTTP handler to server OEH request");
OwaContext.Current.IsAsyncRequest = true;
return(new OwaEventAsyncHttpHandler(owaEventHandlerBase));
}
ExTraceGlobals.OehTracer.TraceDebug(0L, "Created sync HTTP handler to serve OEH request");
return(new OwaEventHttpHandler(owaEventHandlerBase));
}
public static void RegisterHandler(Type handlerType)
{
ExTraceGlobals.OehCallTracer.TraceDebug(0L, "OwaEventRegistry.RegisterHandler");
if (handlerType == null)
{
throw new ArgumentNullException("handlerType");
}
object[] customAttributes = handlerType.GetCustomAttributes(typeof(OwaEventNamespaceAttribute), false);
if (customAttributes == null || customAttributes.Length == 0)
{
throw new OwaNotSupportedException("Internal error: Handler is missing OwaEventNamespaceAttribute attribute");
}
OwaEventNamespaceAttribute owaEventNamespaceAttribute = (OwaEventNamespaceAttribute)customAttributes[0];
owaEventNamespaceAttribute.HandlerType = handlerType;
customAttributes = handlerType.GetCustomAttributes(typeof(OwaEventSegmentationAttribute), false);
if (customAttributes != null && customAttributes.Length > 0)
{
OwaEventSegmentationAttribute owaEventSegmentationAttribute = (OwaEventSegmentationAttribute)customAttributes[0];
owaEventNamespaceAttribute.SegmentationFlags = owaEventSegmentationAttribute.SegmentationFlags;
}
else
{
owaEventNamespaceAttribute.SegmentationFlags = 0UL;
}
Type objectIdType = null;
customAttributes = handlerType.GetCustomAttributes(typeof(OwaEventObjectIdAttribute), false);
if (customAttributes != null && customAttributes.Length > 0)
{
objectIdType = ((OwaEventObjectIdAttribute)customAttributes[0]).ObjectIdType;
}
ExTraceGlobals.OehDataTracer.TraceDebug <string>(0L, "Handler type: '{0}'", handlerType.ToString());
foreach (MethodInfo methodInfo in handlerType.GetMethods(BindingFlags.Instance | BindingFlags.Public))
{
customAttributes = methodInfo.GetCustomAttributes(typeof(OwaEventAttribute), false);
if (customAttributes != null && customAttributes.Length > 0)
{
OwaEventAttribute owaEventAttribute = (OwaEventAttribute)customAttributes[0];
ParameterInfo[] parameters = methodInfo.GetParameters();
if (methodInfo.ReturnType == typeof(IAsyncResult))
{
if (parameters.Length != 2 || parameters[0].ParameterType != typeof(AsyncCallback) || parameters[1].ParameterType != typeof(object))
{
throw new OwaNotSupportedException("Wrong signature for async event handler method.");
}
owaEventAttribute.IsAsync = true;
owaEventAttribute.BeginMethodInfo = methodInfo;
}
else if (methodInfo.ReturnType == typeof(void))
{
if (parameters.Length == 1 && parameters[0].ParameterType == typeof(IAsyncResult))
{
owaEventAttribute.EndMethodInfo = methodInfo;
owaEventAttribute.IsAsync = true;
}
else
{
if (parameters.Length != 0)
{
throw new OwaNotSupportedException("Wrong signature for event handler method.");
}
owaEventAttribute.MethodInfo = methodInfo;
owaEventAttribute.IsAsync = false;
}
}
if (!owaEventAttribute.IsAsync || !(null != owaEventAttribute.EndMethodInfo))
{
OwaEventRegistry.ScanHandlerAttributes(methodInfo, owaEventAttribute, objectIdType);
}
owaEventNamespaceAttribute.AddEventInfo(owaEventAttribute);
}
}
foreach (object obj in owaEventNamespaceAttribute.EventInfoTable.Values)
{
OwaEventAttribute owaEventAttribute2 = obj as OwaEventAttribute;
if (owaEventAttribute2.MethodInfo != null)
{
if (owaEventAttribute2.BeginMethodInfo != null || owaEventAttribute2.EndMethodInfo != null)
{
throw new OwaNotSupportedException("Namespace defines the same event both sync and async");
}
}
else if (owaEventAttribute2.BeginMethodInfo != null)
{
if (owaEventAttribute2.EndMethodInfo == null)
{
throw new OwaNotSupportedException(string.Format("Begin async method {0} for event {1} is missing its corresponding End method", owaEventAttribute2.BeginMethodInfo.Name, owaEventAttribute2.Name));
}
}
else if (owaEventAttribute2.EndMethodInfo != null && owaEventAttribute2.BeginMethodInfo == null)
{
throw new OwaNotSupportedException(string.Format("End async method {0} for event {1} is missing its corresponding Begin method", owaEventAttribute2.EndMethodInfo.Name, owaEventAttribute2.Name));
}
}
OwaEventRegistry.handlerTable.Add(owaEventNamespaceAttribute.Name, owaEventNamespaceAttribute);
}
