return nil
	}
	return &Opa{
		args:   args,
		client: &http.Client{Transport: args.Transport},
	}
}

// IsAllowed - checks given policy args is allowed to continue the REST API.
func (o *Opa) IsAllowed(args policy.Args) (bool, error) {
	if o == nil {
		return false, nil
	}

	// OPA input
	body := make(map[string]interface{})
	body["input"] = args

		byPassSet = globalIAMSys.IsAllowed(policy.Args{
			AccountName:     cred.AccessKey,
			Groups:          cred.Groups,
			Action:          policy.BypassGovernanceRetentionAction,
			BucketName:      bucketName,
			ObjectName:      objectName,
			ConditionValues: conditions,
			IsOwner:         owner,
			Claims:          cred.Claims,
		})
	}
	if globalIAMSys.IsAllowed(policy.Args{

	}

	checkDenyOnly := false
	if name == cred.AccessKey {
		// Check that there is no explicit deny - otherwise it's allowed
		// to view one's own info.
		checkDenyOnly = true
	}

	if !globalIAMSys.IsAllowed(policy.Args{
		AccountName:     cred.AccessKey,
		Groups:          cred.Groups,
		Action:          policy.GetUserAdminAction,
		ConditionValues: getConditionValues(r, "", cred),
		IsOwner:         owner,

	policy, _, err := globalBucketMetadataSys.GetPolicyConfig(bucket)
	return policy, err
}

// IsAllowed - checks given policy args is allowed to continue the Rest API.
func (sys *PolicySys) IsAllowed(args policy.BucketPolicyArgs) bool {
	p, err := sys.Get(args.BucketName)
	if err == nil {
		return p.IsAllowed(args)
	}

	// Log unhandled errors.
	if _, ok := err.(BucketPolicyNotFound); !ok {

	}

	// Sub policy not set, this is most common since subPolicy
	// is optional, use the inherited policies.
	return isOwnerDerived || combinedPolicy.IsAllowed(args)
}

func isAllowedBySessionPolicyForServiceAccount(args policy.Args) (hasSessionPolicy bool, isAllowed bool) {
	hasSessionPolicy = false
	isAllowed = false

		return nil
	}
	return &AuthZPlugin{
		args:   args,
		client: &http.Client{Transport: args.Transport},
	}
}

// IsAllowed - checks given policy args is allowed to continue the REST API.
func (o *AuthZPlugin) IsAllowed(args policy.Args) (bool, error) {
	if o == nil {
		return false, nil
	}

	// Access Management Plugin Input
	body := make(map[string]interface{})

	// If listing is requested for a specific user (who is not the request
	// sender), check that the user has permissions.
	if userDN != "" && userDN != cred.ParentUser {
		if !globalIAMSys.IsAllowed(policy.Args{
			AccountName:     cred.AccessKey,
			Groups:          cred.Groups,
			Action:          policy.ListServiceAccountsAdminAction,
			ConditionValues: getConditionValues(r, "", cred),

// checkKMSActionAllowed checks for authorization for a specific action on a resource.
func checkKMSActionAllowed(r *http.Request, owner bool, cred auth.Credentials, action policy.KMSAction, resource string) bool {
	return globalIAMSys.IsAllowed(policy.Args{
		AccountName:     cred.AccessKey,
		Groups:          cred.Groups,
		Action:          policy.Action(action),
		ConditionValues: getConditionValues(r, "", cred),
		IsOwner:         owner,

	readable := globalPolicySys.IsAllowed(policy.BucketPolicyArgs{
		Action:          policy.ListBucketAction,
		BucketName:      bucket,
		ConditionValues: getConditionValues(r, "", auth.AnonymousCredentials),
		IsOwner:         false,
	})

	// Check if anonymous (non-owner) has access to upload objects.
	writable := globalPolicySys.IsAllowed(policy.BucketPolicyArgs{

			//   error.
			// * if you don’t have the s3:ListBucket
			//   permission, Amazon S3 will return an HTTP
			//   status code 403 ("access denied") error.`
			if globalPolicySys.IsAllowed(policy.BucketPolicyArgs{
				Action:          policy.ListBucketAction,
				BucketName:      bucket,
				ConditionValues: getConditionValues(r, "", auth.AnonymousCredentials),
				IsOwner:         false,
			}) {