namespace Nwc.XmlRpc { using System; using System.Reflection; /// <summary> /// Simple tagging attribute to indicate participation is XML-RPC exposure. /// </summary> /// <remarks> /// If present at the class level it indicates that this class does explicitly /// expose methods. If present at the method level it denotes that the method /// is exposed. /// </remarks> [AttributeUsage( AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true )] public class XmlRpcExposedAttribute : Attribute { /// <summary>Check if <paramref>obj</paramref> is an object utilizing the XML-RPC exposed Attribute.</summary> /// <param name="obj"><c>Object</c> of a class or method to check for attribute.</param> /// <returns><c>Boolean</c> true if attribute present.</returns> public static Boolean ExposedObject(Object obj) { return IsExposed(obj.GetType()); } /// <summary>Check if <paramref>obj</paramref>.<paramref>methodName</paramref> is an XML-RPC exposed method.</summary> /// <remarks>A method is considered to be exposed if it exists and, either, the object does not use the XmlRpcExposed attribute, /// or the object does use the XmlRpcExposed attribute and the method has the XmlRpcExposed attribute as well.</remarks> /// <returns><c>Boolean</c> true if the method is exposed.</returns> public static Boolean ExposedMethod(Object obj, String methodName) { Type type = obj.GetType(); MethodInfo method = type.GetMethod(methodName); if (method == null) throw new MissingMethodException("Method " + methodName + " not found."); if (!IsExposed(type)) return true; return IsExposed(method); } /// <summary>Check if <paramref>mi</paramref> is XML-RPC exposed.</summary> /// <param name="mi"><c>MemberInfo</c> of a class or method to check for attribute.</param> /// <returns><c>Boolean</c> true if attribute present.</returns> public static Boolean IsExposed(MemberInfo mi) { foreach (Attribute attr in mi.GetCustomAttributes(true)) { if (attr is XmlRpcExposedAttribute) return true; } return false; } } }