I'm trying to create login with google api authentication with oauth2. I'm getting response from google api (response.body) as:
{
"id": "received ID",
"email": "EMAIL",
"verified_email": true,
"name": "Name",
}
How can I access that data inside go program so that I can store it in database?
package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
"net/url"
"strings"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
"encoding/json"
)
var (
oauthConf = &oauth2.Config{
ClientID: "CLIENTID",
ClientSecret: "Secret",
RedirectURL: "http://localhost:8011/showprofile",
//Scopes: []string{"https://www.googleapis.com/auth/plus.login"},
Scopes:[]string{"profile","email"},
Endpoint: google.Endpoint,
}
oauthStateString = "thisshouldberandom"
)
const htmlIndex = `<html><body>
Logged in with <a href="/login">facebook</a>
</body></html>
`
func handleMain(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.WriteHeader(http.StatusOK)
w.Write([]byte(htmlIndex))
}
func handleGoogleLogin(w http.ResponseWriter, r *http.Request) {
Url, err := url.Parse(oauthConf.Endpoint.AuthURL)
if err != nil {
log.Fatal("Parse: ", err)
}
parameters := url.Values{}
parameters.Add("client_id", oauthConf.ClientID)
parameters.Add("scope", strings.Join(oauthConf.Scopes, " "))
parameters.Add("redirect_uri", oauthConf.RedirectURL)
parameters.Add("response_type", "code")
parameters.Add("state", oauthStateString)
Url.RawQuery = parameters.Encode()
url := Url.String()
fmt.Println("URL" + url)
http.Redirect(w, r, url, http.StatusTemporaryRedirect)
}
func handleGoogleCallback(w http.ResponseWriter, r *http.Request) {
fmt.Println("Call back working")
state := r.FormValue("state")
if state != oauthStateString {
fmt.Printf("invalid oauth state, expected '%s', got '%s'
", oauthStateString, state)
http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
return
}
code := r.FormValue("code")
token, err := oauthConf.Exchange(oauth2.NoContext, code)
if err != nil {
fmt.Printf("oauthConf.Exchange() failed with '%s'
", err)
http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
return
}
resp,err:= http.Get("https://www.googleapis.com/oauth2/v2/userinfo?access_token=" + token.AccessToken)
if err != nil {
fmt.Printf("Get: %s
", err)
http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
return
}
fmt.Println(resp.Body)
defer resp.Body.Close()
response, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Printf("ReadAll: %s
", err)
http.Redirect(w, r, "/showprofile", http.StatusTemporaryRedirect)
return
}
log.Printf("parseResponseBody: %s
", string(response))
http.Redirect(w, r, "/showprofile", http.StatusTemporaryRedirect)
}
func main() {
http.HandleFunc("/", handleMain)
http.HandleFunc("/login", handleGoogleLogin)
http.HandleFunc("/showprofile", handleGoogleCallback)
fmt.Print("Started running on http://localhost:8011
")
log.Fatal(http.ListenAndServe(":8011", nil))
}
