Persona Verification in Go

persona.go

package persona

import (
  "encoding/json"
  "io/ioutil"
  "net/http"
  "net/url"
)

type Auth struct {
  Status, Email, Audience, Issuer, Reason string
  Expires uint64
}

func (a *Auth) Authenticated() bool {
  return a.Status == "okay"
}

func failure(err error, auth *Auth) bool {
  if err != nil {
    auth.Status = "failure"
    auth.Reason = err.Error()
    return true
  }
  return false
}

func Authenticate(assertion, audience string) (auth Auth) {
  // Post to verify.
  response, err := http.PostForm(
    "https://verifier.login.persona.org/verify",
    url.Values{"assertion": {assertion}, "audience": {audience}},
  )
  if failure(err, &auth) {
    return
  }

  // Read response.
  defer response.Body.Close()
  body, err := ioutil.ReadAll(response.Body)
  if failure(err, &auth) {
    return
  }

  // Read json into Auth struct.
  err = json.Unmarshal(body, &auth)
  failure(err, &auth)
  return
}