twitch-bot/authBackends.go

65 lines
1.8 KiB
Go

package main
import (
"context"
"net/http"
"time"
"github.com/Luzifer/go_helpers/v2/str"
"github.com/Luzifer/twitch-bot/v3/internal/service/authcache"
"github.com/Luzifer/twitch-bot/v3/pkg/twitch"
"github.com/pkg/errors"
)
const internalTokenAuthCacheExpiry = 5 * time.Minute
func authBackendInternalToken(token string) (modules []string, expiresAt time.Time, err error) {
for _, auth := range config.AuthTokens {
if auth.validate(token) != nil {
continue
}
// We found a matching token
return auth.Modules, time.Now().Add(internalTokenAuthCacheExpiry), nil
}
return nil, time.Time{}, authcache.ErrUnauthorized
}
func authBackendTwitchToken(token string) (modules []string, expiresAt time.Time, err error) {
tc := twitch.New(cfg.TwitchClient, cfg.TwitchClientSecret, token, "")
var httpError twitch.HTTPError
id, user, err := tc.GetAuthorizedUser(context.Background())
switch {
case err == nil:
// We got a valid user, continue check below
if !str.StringInSlice(user, config.BotEditors) && !str.StringInSlice(id, config.BotEditors) {
// That user is none of our editors: Deny access
return nil, time.Time{}, authcache.ErrUnauthorized
}
_, _, expiresAt, err = tc.GetTokenInfo(context.Background())
if err != nil {
return nil, time.Time{}, errors.Wrap(err, "getting token expiry")
}
// Editors have full access: Return module "*"
return []string{"*"}, expiresAt, nil
case errors.As(err, &httpError):
// We either got "forbidden" or we got another error
if httpError.Code == http.StatusUnauthorized {
// That token wasn't valid or not a Twitch token: Unauthorized
return nil, time.Time{}, authcache.ErrUnauthorized
}
return nil, time.Time{}, errors.Wrap(err, "validating Twitch token")
default:
// Something else went wrong
return nil, time.Time{}, errors.Wrap(err, "validating Twitch token")
}
}