apiserver/pkg/authentication/authenticator/helpers.go

43 lines
1.1 KiB
Go

/*
Copyright 2018 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package authenticator
// Audiences is a container for the Audiences of a token.
type Audiences []string
// Has checks if Audiences contains a specific audiences.
func (a Audiences) Has(taud string) bool {
for _, aud := range a {
if aud == taud {
return true
}
}
return false
}
// Intersect intersects Audiences with a target Audiences and returns all
// elements in both.
func (a Audiences) Intersect(tauds Audiences) Audiences {
selected := Audiences{}
for _, taud := range tauds {
if a.Has(taud) {
selected = append(selected, taud)
}
}
return selected
}