func GenerateToken(s *kubeadmapi.Secrets) error {
_, tokenID, err := RandBytes(TokenIDLen / 2)
if err != nil {
return err
}
tokenBytes, token, err := RandBytes(TokenBytes)
if err != nil {
return err
}
s.TokenID = tokenID
s.BearerToken = token
s.Token = tokenBytes
s.GivenToken = fmt.Sprintf("%s.%s", tokenID, token)
return nil
}
func UseGivenTokenIfValid(s *kubeadmapi.Secrets) (bool, error) {
if s.GivenToken == "" {
return false, nil // not given
}
fmt.Println("<util/tokens> validating provided token")
givenToken := strings.Split(strings.ToLower(s.GivenToken), ".")
// TODO(phase1+) could also print more specific messages in each case
invalidErr := "<util/tokens> provided token does not match expected <6 characters>.<16 characters> format - %s"
if len(givenToken) != 2 {
return false, fmt.Errorf(invalidErr, "not in 2-part dot-separated format")
}
if len(givenToken[0]) != TokenIDLen {
return false, fmt.Errorf(invalidErr, fmt.Sprintf(
"length of first part is incorrect [%d (given) != %d (expected) ]",
len(givenToken[0]), TokenIDLen))
}
tokenBytes := []byte(givenToken[1])
s.TokenID = givenToken[0]
s.BearerToken = givenToken[1]
s.Token = tokenBytes
return true, nil // given and valid
}