public MatchResult Evaluate(AuthorizationContext authorizationContext)
{
foreach (var allOf in AllOf)
if (allOf.Evaluate(authorizationContext) == MatchResult.True)
return MatchResult.True;
return MatchResult.False;
}
public MatchResult Evaluate(AuthorizationContext authorizationContext)
{
foreach (var match in Matches)
if (match.Evaluate(authorizationContext) == MatchResult.False)
return MatchResult.False;
return MatchResult.True;
}
public MatchResult Evaluate(AuthorizationContext authorizationContext)
{
foreach (var attributeCategory in authorizationContext.AttributeCategories)
if (Evaluate(attributeCategory) == MatchResult.True)
return MatchResult.True;
return MatchResult.False;
}
/// <summary>
/// <see cref="http://docs.oasis-open.org/xacml/3.0/xacml-3.0-core-spec-os-en.html#_Toc325047188">Rule evaluation</see>
/// </summary>
/// <param name="authorizationContext"></param>
/// <returns></returns>
public Decision Evaluate(AuthorizationContext authorizationContext)
{
// not using conditions right now, so the rule table will always be
// true for the condition column
var matchResult = Target != null
? Target.Evaluate(authorizationContext)
: MatchResult.True;
switch (matchResult)
{
case MatchResult.True:
if (Effect == RuleEffect.Permit)
return Decision.Permit;
return Decision.Deny;
case MatchResult.False:
return Decision.NotApplicable;
case MatchResult.Indeterminate:
if (Effect == RuleEffect.Permit)
return Decision.Indeterminate | Decision.Permit;
return Decision.Indeterminate | Decision.Deny;
}
throw new Exception("Invalid match result detected.");
}
public ICollection<PolicySet> GetApplicablePolicySets(AuthorizationContext authorizationContext)
{
var applicablePolicySets = new List<PolicySet>();
foreach (var policySet in PolicySets)
if (policySet.Target.Evaluate(authorizationContext) == MatchResult.True)
applicablePolicySets.Add(policySet);
return applicablePolicySets;
}
public abstract Decision Evaluate(IEnumerable<IDecisionEvaluator> evaluators, AuthorizationContext context);
public AuthorizationRequest(AuthorizationContext authorizationContext)
{
AuthorizationContext = authorizationContext;
}
public Decision Evaluate(AuthorizationContext authorizationContext)
{
return CombiningAlgorithm.Evaluate(Rules, authorizationContext);
}