func (s *SessionState) EncryptedString(c *cookie.Cipher) (string, error) {
var err error
if c == nil {
panic("error. missing cipher")
}
a := s.AccessToken
if a != "" {
a, err = c.Encrypt(a)
if err != nil {
return "", err
}
}
r := s.RefreshToken
if r != "" {
r, err = c.Encrypt(r)
if err != nil {
return "", err
}
}
return fmt.Sprintf("%s|%s|%d|%s", s.userOrEmail(), a, s.ExpiresOn.Unix(), r), nil
}
func DecodeSessionState(v string, c *cookie.Cipher) (s *SessionState, err error) {
chunks := strings.Split(v, "|")
if len(chunks) == 1 {
if strings.Contains(chunks[0], "@") {
u := strings.Split(v, "@")[0]
return &SessionState{Email: v, User: u}, nil
}
return &SessionState{User: v}, nil
}
if len(chunks) != 4 {
err = fmt.Errorf("invalid number of fields (got %d expected 4)", len(chunks))
return
}
s = &SessionState{}
if c != nil && chunks[1] != "" {
s.AccessToken, err = c.Decrypt(chunks[1])
if err != nil {
return nil, err
}
}
if c != nil && chunks[3] != "" {
s.RefreshToken, err = c.Decrypt(chunks[3])
if err != nil {
return nil, err
}
}
if u := chunks[0]; strings.Contains(u, "@") {
s.Email = u
s.User = strings.Split(u, "@")[0]
} else {
s.User = u
}
ts, _ := strconv.Atoi(chunks[2])
s.ExpiresOn = time.Unix(int64(ts), 0)
return
}