mirror of
https://github.com/Luzifer/twitch-bot.git
synced 2024-11-09 00:30:02 +00:00
89 lines
2.4 KiB
Go
89 lines
2.4 KiB
Go
package spotify
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"crypto/sha512"
|
|
"encoding/hex"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/gofrs/uuid"
|
|
"github.com/gorilla/mux"
|
|
"github.com/sirupsen/logrus"
|
|
"golang.org/x/crypto/pbkdf2"
|
|
"golang.org/x/oauth2"
|
|
)
|
|
|
|
const (
|
|
spotifyRequestTimeout = 2 * time.Second
|
|
|
|
pkcePBKDFIter = 210000
|
|
pkcePBKDFLen = 64
|
|
)
|
|
|
|
var instanceSalt = uuid.Must(uuid.NewV4()).String()
|
|
|
|
func handleStartAuth(w http.ResponseWriter, r *http.Request) {
|
|
channel := mux.Vars(r)["channel"]
|
|
pkceVerifier := hex.EncodeToString(pbkdf2.Key([]byte(channel), []byte(instanceSalt), pkcePBKDFIter, pkcePBKDFLen, sha512.New))
|
|
|
|
redirURL := baseURL.ResolveReference(&url.URL{Path: r.URL.Path})
|
|
conf, err := oauthConfig(channel, strings.Split(redirURL.String(), "?")[0])
|
|
if err != nil {
|
|
logrus.WithError(err).Error("getting Spotify oauth config")
|
|
http.Error(w, "unable to get Spotify config for this channel", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
code := r.URL.Query().Get("code")
|
|
if code == "" {
|
|
http.Redirect(
|
|
w, r,
|
|
conf.AuthCodeURL(
|
|
fmt.Sprintf("%x", sha256.Sum256(append([]byte(conf.ClientID), []byte(channel)...))),
|
|
oauth2.S256ChallengeOption(pkceVerifier),
|
|
),
|
|
http.StatusFound,
|
|
)
|
|
return
|
|
}
|
|
|
|
token, err := conf.Exchange(
|
|
r.Context(),
|
|
r.URL.Query().Get("code"),
|
|
oauth2.VerifierOption(pkceVerifier),
|
|
)
|
|
if err != nil {
|
|
logrus.WithError(err).Error("getting Spotify oauth token")
|
|
http.Error(w, "unable to get Spotify auth token", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
if err = db.StoreEncryptedCoreMeta(strings.Join([]string{"spotify-auth", channel}, ":"), token); err != nil {
|
|
logrus.WithError(err).Error("storing Spotify oauth token")
|
|
http.Error(w, "unable to store Spotify auth token", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
fmt.Fprintln(w, "Spotify is now authorized for this channel, you can close this page")
|
|
}
|
|
|
|
func oauthConfig(channel, redirectURL string) (conf *oauth2.Config, err error) {
|
|
clientID, err := getModuleConfig(actorName, channel).String("clientId")
|
|
if err != nil {
|
|
return nil, fmt.Errorf("getting clientId for channel: %w", err)
|
|
}
|
|
|
|
return &oauth2.Config{
|
|
ClientID: clientID,
|
|
Endpoint: oauth2.Endpoint{
|
|
AuthURL: "https://accounts.spotify.com/authorize",
|
|
TokenURL: "https://accounts.spotify.com/api/token",
|
|
},
|
|
RedirectURL: redirectURL,
|
|
Scopes: []string{"user-read-currently-playing"},
|
|
}, nil
|
|
}
|