func (ut *UserToken) DecodeToken(crypto *tkits.Crypto, token string) bool {
bs, err := base64.URLEncoding.DecodeString(token)
if err != nil {
return false
}
// decrypt
var tbs []byte
tbs, err = crypto.Decrypt(bs)
if err != nil {
return false
}
// check the len
if len(tbs) != TokenLen {
return false
}
ut.Flag = TokenFlag(tbs[0])
// remain bytes
buf := bytes.NewReader(tbs[1:])
// read uid
if err := binary.Read(buf, binary.BigEndian, &ut.Uid); err != nil {
return false
}
// ip
var ip net.IP
buf.Read([]byte(ip))
ut.ClientIP = ip.String()
// gen time
if err := binary.Read(buf, binary.BigEndian, &ut.GenTime); err != nil {
return false
}
// gen time
if err := binary.Read(buf, binary.BigEndian, &ut.Expire); err != nil {
return false
}
return true
}
