77 lines
1.9 KiB
Go
77 lines
1.9 KiB
Go
|
/*
|
||
|
|
This is an example application to demonstrate querying the user info endpoint.
|
||
|
|
*/
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/json"
|
||
|
|
"log"
|
||
|
|
"net/http"
|
||
|
|
"os"
|
||
|
|
|
||
|
|
"github.com/ericchiang/oidc"
|
||
|
|
|
||
|
|
"golang.org/x/net/context"
|
||
|
|
"golang.org/x/oauth2"
|
||
|
|
)
|
||
|
|
|
||
|
|
var (
|
||
|
|
clientID = os.Getenv("GOOGLE_OAUTH2_CLIENT_ID")
|
||
|
|
clientSecret = os.Getenv("GOOGLE_OAUTH2_CLIENT_SECRET")
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
ctx := context.Background()
|
||
|
|
|
||
|
|
provider, err := oidc.NewProvider(ctx, "https://accounts.google.com")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
config := oauth2.Config{
|
||
|
|
ClientID: clientID,
|
||
|
|
ClientSecret: clientSecret,
|
||
|
|
Endpoint: provider.Endpoint(),
|
||
|
|
RedirectURL: "http://127.0.0.1:5556/auth/google/callback",
|
||
|
|
Scopes: []string{oidc.ScopeOpenID, "profile", "email"},
|
||
|
|
}
|
||
|
|
|
||
|
|
state := "foobar" // Don't do this in production.
|
||
|
|
|
||
|
|
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
|
||
|
|
http.Redirect(w, r, config.AuthCodeURL(state), http.StatusFound)
|
||
|
|
})
|
||
|
|
|
||
|
|
http.HandleFunc("/auth/google/callback", func(w http.ResponseWriter, r *http.Request) {
|
||
|
|
if r.URL.Query().Get("state") != state {
|
||
|
|
http.Error(w, "state did not match", http.StatusBadRequest)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
oauth2Token, err := config.Exchange(ctx, r.URL.Query().Get("code"))
|
||
|
|
if err != nil {
|
||
|
|
http.Error(w, "Failed to exchange token: "+err.Error(), http.StatusInternalServerError)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
userInfo, err := provider.UserInfo(ctx, oauth2.StaticTokenSource(oauth2Token))
|
||
|
|
if err != nil {
|
||
|
|
http.Error(w, "Failed to get userinfo: "+err.Error(), http.StatusInternalServerError)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
resp := struct {
|
||
|
|
OAuth2Token *oauth2.Token
|
||
|
|
UserInfo *oidc.UserInfo
|
||
|
|
}{oauth2Token, userInfo}
|
||
|
|
data, err := json.MarshalIndent(resp, "", " ")
|
||
|
|
if err != nil {
|
||
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
w.Write(data)
|
||
|
|
})
|
||
|
|
|
||
|
|
log.Printf("listening on http://%s/", "127.0.0.1:5556")
|
||
|
|
log.Fatal(http.ListenAndServe("127.0.0.1:5556", nil))
|
||
|
|
}
|