-dex-encode-oauth2client-name.md

Dex: encode Oauth2Client CRD name

Source dexidp/dex#1606 (comment)

Dex OAuth2Client CRD metadata.name field should match spec.id and spec.name but needs a special encoding.

Generate it with:

wget https://gist.github.com/aslafy-z/c7e6cc1e2efb15b33fe497e4adbbf6f5/raw/dex-encode-crd-name.go
go run dex-encode-crd-name.go "some-client"

Then, feed it to your OAuth2Client CRD as ${CLIENT_ID_ENCODED}:

apiVersion: dex.coreos.com/v1
kind: OAuth2Client
metadata:
  name: ${CLIENT_ID_ENCODED}
id: some-client
name: some-client
secret: <some-secret>
redirectURIs:
- https://foo

dex-encode-oauth2client-name.go

package main

import (
	"encoding/base32"
	"fmt"
	"hash/fnv"
	"os"
	"strings"
)

var encoding = base32.NewEncoding("abcdefghijklmnopqrstuvwxyz234567")

func main() {
	if len(os.Args) < 2 {
		fmt.Printf("Usage: %s <string>\n", os.Args[0])
		os.Exit(1)
	}
	toDecodeString := []byte(os.Args[1])
	encodedString := strings.TrimRight(encoding.EncodeToString(fnv.New64().Sum(toDecodeString)), "=")
	fmt.Println(encodedString)
}