webapi add basic certification

La la la la la la 

　　 // base.OnAuthorization (), inside this method, call IsAuthorized () to determine whether to authorize, if an unauthorized call HandleUnauthorizedRequest () method
     // base.IsAuthorized (), to determine Principal, Identity is empty, empty the unauthorized
     / / base.HandleUnauthorizedRequest (), this method creates internal Response, the status code 401;
     //
     public  class BasicAuthorize: the AuthorizeAttribute 
    { 
        public  the override  void OnAuthorization (HttpActionContext ActionContext) 
        { 

            var AuthenticationHeader = actionContext.Request.Headers.Authorization; 

            IF (actionContext.ActionDescriptor .GetCustomAttributes <AllowAnonymousAttribute> ( to true ) .Count> 0
                ActionContext.ControllerContext.ControllerDescriptor.GetCustomAttributes || <AllowAnonymousAttribute> ( to true ) .Count> 0 ) 
            { // if AllowAnonymous characteristics, does not check 
                Base .OnAuthorization (ActionContext); 
            } 
            the else  IF ! (AuthenticationHeader = null && authenticationHeader.Scheme == " Basic " &&! String .IsNullOrEmpty (authenticationHeader.Parameter)) 
            { 
                var userNameAndPassword = GetUserNameAndPassword (authenticationHeader.Parameter);
                 // add here username and password validation logic
                if (userNameAndPassword.Item1 == "zhangsan" && userNameAndPassword.Item2 == "123")
                {
                    actionContext.RequestContext.Principal = null;//这里自己实现一下
                }
                else {
                    base.HandleUnauthorizedRequest(actionContext);
                }
            }
            else
            {
                base.HandleUnauthorizedRequest(actionContext);
            }

        }
        private Tuple<string, string> GetUserNameAndPassword(string authenticationParameter)
        {
            if (!string.IsNullOrWhiteSpace(authenticationParameter))
            {
                var data = Encoding.ASCII.GetString(Convert.FromBase64String(authenticationParameter)).Split(':');
                return new Tuple<string, string>(data[0], data[1]);
            }
            return null;
        }
    }

 

 Add Filter

        public static void Register(HttpConfiguration config)
        {
            // Web API 配置和服务
            RegisterFilters(config.Filters);
        }
        public static void RegisterFilters(HttpFilterCollection filters)
        {
            filters.Add(new BasicAuthorize());
        }