mirror of https://github.com/k3s-io/k3s
64 lines
1.7 KiB
Go
64 lines
1.7 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package authenticator
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import "context"
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// Audiences is a container for the Audiences of a token.
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type Audiences []string
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// The key type is unexported to prevent collisions
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type key int
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const (
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// audiencesKey is the context key for request audiences.
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audiencesKey key = iota
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)
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// WithAudiences returns a context that stores a request's expected audiences.
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func WithAudiences(ctx context.Context, auds Audiences) context.Context {
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return context.WithValue(ctx, audiencesKey, auds)
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}
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// AudiencesFrom returns a request's expected audiences stored in the request context.
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func AudiencesFrom(ctx context.Context) (Audiences, bool) {
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auds, ok := ctx.Value(audiencesKey).(Audiences)
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return auds, ok
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}
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// Has checks if Audiences contains a specific audiences.
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func (a Audiences) Has(taud string) bool {
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for _, aud := range a {
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if aud == taud {
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return true
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}
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}
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return false
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}
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// Intersect intersects Audiences with a target Audiences and returns all
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// elements in both.
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func (a Audiences) Intersect(tauds Audiences) Audiences {
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selected := Audiences{}
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for _, taud := range tauds {
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if a.Has(taud) {
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selected = append(selected, taud)
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}
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}
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return selected
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}
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