Show token info

token_info.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"strings"
)

func main() {
	tokenBytes, err := ioutil.ReadAll(os.Stdin)
	if err != nil {
		log.Fatal(err)
	}

	token := string(tokenBytes)
	token = strings.TrimSuffix(token, "\n")

	resp, err := http.Get("https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=" + token)
	if err != nil {
		log.Fatal(err)
	}

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Print(string(body))
}