/// <summary>
// Evaluate current requirement against given user and typed resource.
/// </summary>
/// <param name="context">authorization data context</param>
/// <param name="resource">resource object</param>
/// <returns>true if allowed</returns>
protected override bool Evaluate(AuthZyinContext <TData> context, TResource resource)
{
if (context?.Data == null)
{
throw new ArgumentNullException("JsonPath requirement needs the data to be set in context");
}
if (resource == null)
{
throw new ArgumentNullException("JsonPath based requirement needs the resource object");
}
var dataJObject = context.GetDataAsJObject();
var resourceJObj = resource.GetResourceAsJObject();
if (dataJObject == null || resourceJObj == null)
{
return(false);
}
// Create evluation context and delegate real evlauation to the evaluators
var evaluatorContext = new EvaluatorContext(
dataJObject,
this.DataJPath,
resourceJObj,
this.ResourceJPath,
this.Direction);
return(EvaluatorMap[this.Operator].Evaluate(evaluatorContext));
}
/// <summary>
/// Evaluates the prameters based on the context/resource as well as the operator
/// </summary>
/// <param name="context">evaluation context</param>
/// <returns>true if success</returns>
public override bool Evaluate(EvaluatorContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var left = context.LeftJObject.SelectTokens(context.LeftJPath);
var right = context.RightJObject.SelectToken(context.RightJPath);
if (left == null || left.Count() == 0 || right == null)
{
return(false);
}
// Right must be a JValue
if (!(right is JValue rightValue))
{
return(false);
}
// Left must be an array of JValue with the same type as right
if (!left.All(x => x is JValue && x.Type == right.Type))
{
return(false);
}
return(left.Any(x => (x as JValue).CompareTo(rightValue) == 0));
}
/// <summary>
/// Evaluates the prameters based on the context/resource as well as the operator
/// </summary>
/// <param name="context">evaluation context</param>
/// <returns>true if success</returns>
public sealed override bool Evaluate(EvaluatorContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var left = context.LeftJObject.SelectToken(context.LeftJPath);
var right = context.RightJObject.SelectToken(context.RightJPath);
if (left == null || right == null)
{
return(false);
}
if (!(left is JValue leftValue) || !(right is JValue rightValue))
{
// The left token or right token is not a primitive value
return(false);
}
return(leftValue.Type == rightValue.Type && this.EvaluateValues(leftValue, rightValue));
}
/// <summary> /// Evaluates the prameters based on the context/resource as well as the operator /// </summary> /// <param name="context">evaluation context</param> /// <returns>true if success</returns> public abstract bool Evaluate(EvaluatorContext context);
