cloudfoundry/cf-k8s-controllers

package authorization

import (
    "context"
    "crypto/sha256"
    "encoding/hex"
)

type Info struct {
    Token    string
    CertData []byte
}

type key int

var infoKey key

func NewContext(ctx context.Context, info *Info) context.Context {
    return context.WithValue(ctx, infoKey, info)
}

func InfoFromContext(ctx context.Context) (Info, bool) {
    info, ok := ctx.Value(infoKey).(*Info)
    if info == nil {
        return Info{}, ok
    }

    return *info, ok
}

func (i Info) Scheme() string {
    if i.Token != "" {
        return BearerScheme
    }

    if len(i.CertData) > 0 {
        return CertScheme
    }

    return UnknownScheme
}

func (i Info) Hash() string {
    key := append([]byte(i.Token), i.CertData...)
    hasher := sha256.New()
    return hex.EncodeToString(hasher.Sum(key))
}