// Recover will try to recover the reroute info stored in the cookie and decode
// it into dest. If there is no reroute cookie, an error is returned.
func Recover(g *gas.Gas, dest interface{}) error {
blob := g.Data("_reroute")
if blob == nil {
return ErrNoReroute
}
dec := gob.NewDecoder(bytes.NewReader(blob.([]byte)))
return dec.Decode(dest)
}
// GetSession figures out the session from the session cookie in the request, or
// just return the session if that's been done already.
func GetSession(g *gas.Gas) (*Session, error) {
if store == nil {
return nil, ErrNoStore
}
const sessKey = "_gas_session"
if sessBox := g.Data(sessKey); sessBox != nil {
if sess, ok := sessBox.(*Session); ok {
return sess, nil
}
}
cookie, err := g.Cookie("s")
if err != nil {
if err == http.ErrNoCookie {
return nil, nil
}
SignOut(g)
return nil, err
}
if err = VerifyCookie(cookie); err != nil {
return nil, err
}
id, err := base64.StdEncoding.DecodeString(cookie.Value)
if err != nil {
// this means invalid session
SignOut(g)
return nil, err
}
//id := []byte(cookie.Value)
sess, err := store.Read(id)
if err != nil {
if err == sql.ErrNoRows {
SignOut(g)
return nil, nil
}
return nil, err
}
if time.Now().After(sess.Expires) {
SignOut(g)
return nil, ErrCookieExpired
}
g.SetData(sessKey, sess)
return sess, nil
}