/// <summary>
/// Executes the requested method.
/// to the proper types for execution.
/// </summary>
/// <param name="Method"></param>
/// <param name="methodParameters">An array of the string json parameters to </param>
/// <param name="target">The object to call the method on</param>
/// <param name="parameters">An array of json Strings that make up the parameters for the method call. This value can be null in which case parms are parsed out of GET QueryString or POST values</param>
/// <param name="callbackMethodAttribute">An optional instance of an CallbackAttribute that is set by this method</param>
/// <returns>the result of the method execution</returns>
internal object ExecuteMethod(string method, object target, string[] parameters,
CallbackMethodParameterType paramType,
ref CallbackMethodAttribute callbackMethodAttribute)
{
HttpRequest Request = HttpContext.Current.Request;
HttpResponse Response = HttpContext.Current.Response;
object result = null;
// Stores parsed parameters (from string JSON or QUeryString Values)
object[] adjustedParms = null;
Type PageType = target.GetType();
MethodInfo MI = PageType.GetMethod(method, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
if (MI == null)
{
throw new InvalidOperationException(Resources.InvalidServerMethod);
}
object[] methods = MI.GetCustomAttributes(typeof(CallbackMethodAttribute), false);
if (methods.Length < 1)
{
throw new InvalidOperationException(Resources.ServerMethodIsNotAccessibleDueToMissing);
}
if (callbackMethodAttribute != null)
{
callbackMethodAttribute = methods[0] as CallbackMethodAttribute;
}
// Check for supported HTTP Verbs
if (callbackMethodAttribute.AllowedHttpVerbs != HttpVerbs.All &&
!string.IsNullOrEmpty(Request.HttpMethod))
{
HttpVerbs val = HttpVerbs.None;
Enum.TryParse <HttpVerbs>(Request.HttpMethod, out val);
if (val == HttpVerbs.None || !callbackMethodAttribute.AllowedHttpVerbs.HasFlag(val))
{
Response.StatusCode = (int)HttpStatusCode.MethodNotAllowed;
Response.StatusDescription = string.Format(Resources.NotAllowedMethodExpectsVerb,
callbackMethodAttribute.AllowedHttpVerbs);
throw new UnauthorizedAccessException(Response.StatusDescription);
}
}
ParameterInfo[] parms = MI.GetParameters();
JSONSerializer serializer = new JSONSerializer();
RouteData routeData = null;
if (target is CallbackHandler)
{
routeData = ((CallbackHandler)target).RouteData;
}
int parmCounter = 0;
adjustedParms = new object[parms.Length];
foreach (ParameterInfo parameter in parms)
{
// Retrieve parameters out of QueryString or POST buffer
if (parameters == null)
{
// look for parameters in the route
if (routeData != null)
{
string parmString = routeData.Values[parameter.Name] as string;
adjustedParms[parmCounter] = ReflectionUtils.StringToTypedValue(parmString, parameter.ParameterType);
}
// GET parameter are parsed as plain string values - no JSON encoding
else if (HttpContext.Current.Request.HttpMethod == "GET")
{
// Look up the parameter by name
string parmString = Request.QueryString[parameter.Name];
adjustedParms[parmCounter] = ReflectionUtils.StringToTypedValue(parmString, parameter.ParameterType);
}
// POST parameters are treated as methodParameters that are JSON encoded
else
if (paramType == CallbackMethodParameterType.Json)
{
//string newVariable = methodParameters.GetValue(parmCounter) as string;
adjustedParms[parmCounter] = serializer.Deserialize(Request.Params["parm" + (parmCounter + 1).ToString()], parameter.ParameterType);
}
else
{
adjustedParms[parmCounter] = SerializationUtils.DeSerializeObject(
Request.Params["parm" + (parmCounter + 1).ToString()],
parameter.ParameterType);
}
}
else
if (paramType == CallbackMethodParameterType.Json)
{
adjustedParms[parmCounter] = serializer.Deserialize(parameters[parmCounter], parameter.ParameterType);
}
else
{
adjustedParms[parmCounter] = SerializationUtils.DeSerializeObject(parameters[parmCounter], parameter.ParameterType);
}
parmCounter++;
}
result = MI.Invoke(target, adjustedParms);
return(result);
}
/// <summary>
/// Executes the requested method.
/// to the proper types for execution.
/// </summary>
/// <param name="Method"></param>
/// <param name="methodParameters">An array of the string json parameters to </param>
/// <param name="target">The object to call the method on</param>
/// <param name="parameters">An array of json Strings that make up the parameters for the method call. This value can be null in which case parms are parsed out of GET QueryString or POST values</param>
/// <param name="callbackMethodAttribute">An optional instance of an CallbackAttribute that is set by this method</param>
/// <returns>the result of the method execution</returns>
internal object ExecuteMethod(string method, object target, string[] parameters,
CallbackMethodParameterType paramType,
ref CallbackMethodAttribute callbackMethodAttribute)
{
HttpRequest Request = HttpContext.Current.Request;
HttpResponse Response = HttpContext.Current.Response;
object Result = null;
// Stores parsed parameters (from string JSON or QUeryString Values)
object[] adjustedParms = null;
Type PageType = target.GetType();
MethodInfo MI = PageType.GetMethod(method, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
if (MI == null)
throw new InvalidOperationException();
object[] methods = MI.GetCustomAttributes(typeof(CallbackMethodAttribute), false);
if (methods.Length < 1)
throw new InvalidOperationException();
if (callbackMethodAttribute != null)
callbackMethodAttribute = methods[0] as CallbackMethodAttribute;
// Check for supported HTTP Verbs
if (callbackMethodAttribute.AllowedHttpVerbs != HttpVerbs.All &&
!string.IsNullOrEmpty(Request.HttpMethod))
{
HttpVerbs val = HttpVerbs.None;
Enum.TryParse<HttpVerbs>(Request.HttpMethod, out val);
if (val == HttpVerbs.None || !callbackMethodAttribute.AllowedHttpVerbs.HasFlag(val))
{
Response.StatusCode = (int)HttpStatusCode.MethodNotAllowed;
Response.StatusDescription = string.Format("NotAllowedMethodExpectsVerb");
throw new UnauthorizedAccessException(Response.StatusDescription);
}
}
ParameterInfo[] parms = MI.GetParameters();
JSONSerializer serializer = new JSONSerializer();
RouteData routeData = null;
if (target is CallbackHandler)
routeData = ((CallbackHandler)target).RouteData;
int parmCounter = 0;
adjustedParms = new object[parms.Length];
foreach (ParameterInfo parameter in parms)
{
// Retrieve parameters out of QueryString or POST buffer
if (parameters == null)
{
// look for parameters in the route
if (routeData != null)
{
string parmString = routeData.Values[parameter.Name] as string;
adjustedParms[parmCounter] = ReflectionUtils.StringToTypedValue(parmString, parameter.ParameterType);
}
// GET parameter are parsed as plain string values - no JSON encoding
else if (HttpContext.Current.Request.HttpMethod == "GET")
{
// Look up the parameter by name
string parmString = Request.QueryString[parameter.Name];
adjustedParms[parmCounter] = ReflectionUtils.StringToTypedValue(parmString, parameter.ParameterType);
}
// POST parameters are treated as methodParameters that are JSON encoded
else
if (paramType == CallbackMethodParameterType.Json)
//string newVariable = methodParameters.GetValue(parmCounter) as string;
adjustedParms[parmCounter] = serializer.Deserialize(Request.Params["parm" + (parmCounter + 1).ToString()], parameter.ParameterType);
else
adjustedParms[parmCounter] = SerializationUtils.DeSerializeObject(
Request.Params["parm" + (parmCounter + 1).ToString()],
parameter.ParameterType);
}
else
if (paramType == CallbackMethodParameterType.Json)
adjustedParms[parmCounter] = serializer.Deserialize(parameters[parmCounter], parameter.ParameterType);
else
adjustedParms[parmCounter] = SerializationUtils.DeSerializeObject(parameters[parmCounter], parameter.ParameterType);
parmCounter++;
}
Result = MI.Invoke(target, adjustedParms);
return Result;
}
