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package main
import (
"flag"
"fmt"
"github.com/go-ini/ini"
"net/http"
"io/ioutil"
"os"
"net/url"
"strings"
"strconv"
"encoding/json"
)
type jwt struct {
Scope string
Access_token string
}
func main() {
var config string
flag.StringVar(&config, "config", "", "what config file to read?")
flag.Parse()
if config == "" {
fmt.Fprintf(os.Stderr, "MUST give config file\n")
os.Exit(1)
}
cfg, err := ini.Load(config)
if err != nil {
fmt.Fprintf(os.Stderr, "reading %s: %v\n", config, err)
os.Exit(1)
}
idp := cfg.Section("").Key("idp").String()
id := cfg.Section("").Key("id").String()
secret := cfg.Section("").Key("secret").String()
data := url.Values{}
data.Add("grant_type", "client_credentials")
data.Add("scope", "uapi_projects_get")
client := &http.Client{}
req, err := http.NewRequest("POST", idp, strings.NewReader(data.Encode()))
req.SetBasicAuth(id, secret)
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
req.Header.Add("Content-Length", strconv.Itoa(len(data.Encode())))
resp, err := client.Do(req)
if err != nil{
fmt.Fprintf(os.Stderr, "POST %s: %v\n", idp, err)
os.Exit(1)
}
bodyText, err := ioutil.ReadAll(resp.Body)
s := string(bodyText)
res := jwt{}
json.Unmarshal([]byte(s), &res)
fmt.Fprintf(os.Stdout, "%s\n", res.Access_token)
}
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