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));
}
private static void ScanHandlerAttributes(MethodInfo method, OwaEventAttribute eventInfo, Type objectIdType)
{
object[] customAttributes = method.GetCustomAttributes(typeof(OwaEventVerbAttribute), false);
if (customAttributes != null && customAttributes.Length > 0)
{
OwaEventVerbAttribute owaEventVerbAttribute = (OwaEventVerbAttribute)customAttributes[0];
eventInfo.AllowedVerbs = owaEventVerbAttribute.Verb;
}
else
{
eventInfo.AllowedVerbs = OwaEventVerb.Post;
}
customAttributes = method.GetCustomAttributes(typeof(OwaEventSegmentationAttribute), false);
if (customAttributes != null && customAttributes.Length > 0)
{
OwaEventSegmentationAttribute owaEventSegmentationAttribute = (OwaEventSegmentationAttribute)customAttributes[0];
eventInfo.SegmentationFlags = owaEventSegmentationAttribute.SegmentationFlags;
}
else
{
eventInfo.SegmentationFlags = 0UL;
}
ExTraceGlobals.OehDataTracer.TraceDebug <string, OwaEventVerb>(0L, "Event handler found. Name: '{0}'. Allowed verbs: '{1}'.", eventInfo.Name, eventInfo.AllowedVerbs);
ulong num = 0UL;
int num2 = 0;
if (Globals.CanaryProtectionRequired)
{
eventInfo.AddParameterInfo(new OwaEventParameterAttribute("canary", typeof(string)));
}
customAttributes = method.GetCustomAttributes(typeof(OwaEventParameterAttribute), false);
if (customAttributes != null && customAttributes.Length > 0)
{
if (customAttributes.Length >= 64)
{
throw new OwaNotSupportedException("Event handler declares more parameters than allowed");
}
if ((eventInfo.AllowedVerbs & OwaEventVerb.Get) != OwaEventVerb.Unsupported && customAttributes.Length > 16)
{
throw new OwaNotSupportedException("Event handler declares more parameters than allowed for a GET request");
}
foreach (OwaEventParameterAttribute owaEventParameterAttribute in customAttributes)
{
if (objectIdType != null && owaEventParameterAttribute.Type == typeof(ObjectId))
{
owaEventParameterAttribute = new OwaEventParameterAttribute(owaEventParameterAttribute.Name, objectIdType, owaEventParameterAttribute.IsArray, owaEventParameterAttribute.IsOptional);
}
if (!eventInfo.IsInternal && !OwaEventRegistry.IsAllowedType(owaEventParameterAttribute.Type))
{
string message = string.Format("Event handler is using a type that is not supported method: '{0}' param type '{1}'", method.Name, owaEventParameterAttribute.Type);
throw new OwaNotSupportedException(message);
}
if (string.Equals(owaEventParameterAttribute.Name, "ns", StringComparison.Ordinal) || string.Equals(owaEventParameterAttribute.Name, "ev", StringComparison.Ordinal))
{
throw new OwaNotSupportedException("Handler is trying to use a reserve name for a parameter");
}
if (OwaEventRegistry.structTypeTable[owaEventParameterAttribute.Type] != null)
{
owaEventParameterAttribute.IsStruct = true;
}
owaEventParameterAttribute.ParameterMask = 1UL << num2;
if (!owaEventParameterAttribute.IsOptional)
{
num |= owaEventParameterAttribute.ParameterMask;
}
eventInfo.AddParameterInfo(owaEventParameterAttribute);
num2++;
ExTraceGlobals.OehDataTracer.TraceDebug(0L, "Event handler parameter found, name: '{0}', type: '{1}', isArray: '{2}', isOptional: '{3}', isStruct: '{4}'", new object[]
{
owaEventParameterAttribute.Name,
owaEventParameterAttribute.Type,
owaEventParameterAttribute.IsArray,
owaEventParameterAttribute.IsOptional,
owaEventParameterAttribute.IsStruct
});
}
}
eventInfo.RequiredMask = num;
}
