Golang Attributes.GetName方法代码示例

// Authorize makes a REST request to the remote service describing the attempted action as a JSON
// serialized api.authorization.v1beta1.SubjectAccessReview object. An example request body is
// provided bellow.
//
//     {
//       "apiVersion": "authorization.k8s.io/v1beta1",
//       "kind": "SubjectAccessReview",
//       "spec": {
//         "resourceAttributes": {
//           "namespace": "kittensandponies",
//           "verb": "GET",
//           "group": "group3",
//           "resource": "pods"
//         },
//         "user": "jane",
//         "group": [
//           "group1",
//           "group2"
//         ]
//       }
//     }
//
// The remote service is expected to fill the SubjectAccessReviewStatus field to either allow or
// disallow access. A permissive response would return:
//
//     {
//       "apiVersion": "authorization.k8s.io/v1beta1",
//       "kind": "SubjectAccessReview",
//       "status": {
//         "allowed": true
//       }
//     }
//
// To disallow access, the remote service would return:
//
//     {
//       "apiVersion": "authorization.k8s.io/v1beta1",
//       "kind": "SubjectAccessReview",
//       "status": {
//         "allowed": false,
//         "reason": "user does not have read access to the namespace"
//       }
//     }
//
func (w *WebhookAuthorizer) Authorize(attr authorizer.Attributes) (authorized bool, reason string, err error) {
	r := &authorization.SubjectAccessReview{}
	if user := attr.GetUser(); user != nil {
		r.Spec = authorization.SubjectAccessReviewSpec{
			User:   user.GetName(),
			Groups: user.GetGroups(),
			Extra:  convertToSARExtra(user.GetExtra()),
		}
	}

	if attr.IsResourceRequest() {
		r.Spec.ResourceAttributes = &authorization.ResourceAttributes{
			Namespace:   attr.GetNamespace(),
			Verb:        attr.GetVerb(),
			Group:       attr.GetAPIGroup(),
			Version:     attr.GetAPIVersion(),
			Resource:    attr.GetResource(),
			Subresource: attr.GetSubresource(),
			Name:        attr.GetName(),
		}
	} else {
		r.Spec.NonResourceAttributes = &authorization.NonResourceAttributes{
			Path: attr.GetPath(),
			Verb: attr.GetVerb(),
		}
	}
	key, err := json.Marshal(r.Spec)
	if err != nil {
		return false, "", err
	}
	if entry, ok := w.responseCache.Get(string(key)); ok {
		r.Status = entry.(authorization.SubjectAccessReviewStatus)
	} else {
		var (
			result *authorization.SubjectAccessReview
			err    error
		)
		webhook.WithExponentialBackoff(w.initialBackoff, func() error {
			result, err = w.subjectAccessReview.Create(r)
			return err
		})
		if err != nil {
			// An error here indicates bad configuration or an outage. Log for debugging.
			glog.Errorf("Failed to make webhook authorizer request: %v", err)
			return false, "", err
		}
		r.Status = result.Status
		if r.Status.Allowed {
			w.responseCache.Add(string(key), r.Status, w.authorizedTTL)
		} else {
			w.responseCache.Add(string(key), r.Status, w.unauthorizedTTL)
		}
	}
	return r.Status.Allowed, r.Status.Reason, nil
}

func RuleAllows(requestAttributes authorizer.Attributes, rule rbac.PolicyRule) bool {
	if requestAttributes.IsResourceRequest() {
		resource := requestAttributes.GetResource()
		if len(requestAttributes.GetSubresource()) > 0 {
			resource = requestAttributes.GetResource() + "/" + requestAttributes.GetSubresource()
		}

		return rbac.VerbMatches(rule, requestAttributes.GetVerb()) &&
			rbac.APIGroupMatches(rule, requestAttributes.GetAPIGroup()) &&
			rbac.ResourceMatches(rule, resource) &&
			rbac.ResourceNameMatches(rule, requestAttributes.GetName())
	}

	return rbac.VerbMatches(rule, requestAttributes.GetVerb()) &&
		rbac.NonResourceURLMatches(rule, requestAttributes.GetPath())
}

func (impersonateAuthorizer) Authorize(a authorizer.Attributes) (authorized bool, reason string, err error) {
	user := a.GetUser()

	switch {
	case user.GetName() == "system:admin":
		return true, "", nil

	case user.GetName() == "tester":
		return false, "", fmt.Errorf("works on my machine")

	case user.GetName() == "deny-me":
		return false, "denied", nil
	}

	if len(user.GetGroups()) > 0 && user.GetGroups()[0] == "wheel" && a.GetVerb() == "impersonate" && a.GetResource() == "users" {
		return true, "", nil
	}

	if len(user.GetGroups()) > 0 && user.GetGroups()[0] == "sa-impersonater" && a.GetVerb() == "impersonate" && a.GetResource() == "serviceaccounts" {
		return true, "", nil
	}

	if len(user.GetGroups()) > 0 && user.GetGroups()[0] == "regular-impersonater" && a.GetVerb() == "impersonate" && a.GetResource() == "users" {
		return true, "", nil
	}

	if len(user.GetGroups()) > 1 && user.GetGroups()[1] == "group-impersonater" && a.GetVerb() == "impersonate" && a.GetResource() == "groups" {
		return true, "", nil
	}

	if len(user.GetGroups()) > 1 && user.GetGroups()[1] == "extra-setter-scopes" && a.GetVerb() == "impersonate" && a.GetResource() == "userextras" && a.GetSubresource() == "scopes" {
		return true, "", nil
	}

	if len(user.GetGroups()) > 1 && user.GetGroups()[1] == "extra-setter-particular-scopes" &&
		a.GetVerb() == "impersonate" && a.GetResource() == "userextras" && a.GetSubresource() == "scopes" && a.GetName() == "scope-a" {
		return true, "", nil
	}

	if len(user.GetGroups()) > 1 && user.GetGroups()[1] == "extra-setter-project" && a.GetVerb() == "impersonate" && a.GetResource() == "userextras" && a.GetSubresource() == "project" {
		return true, "", nil
	}

	return false, "deny by default", nil
}