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package jwt
import (
"errors"
)
// Error constants
var (
ErrInvalidKey = errors.New("key is invalid or of invalid type")
ErrHashUnavailable = errors.New("the requested hash function is unavailable")
ErrNoTokenInRequest = errors.New("no token present in request")
)
// The errors that might occur when parsing and validating a token
const (
ValidationErrorMalformed uint32 = 1 << iota // Token is malformed
ValidationErrorUnverifiable // Token could not be verified because of signing problems
ValidationErrorSignatureInvalid // Signature validation failed
ValidationErrorExpired // Exp validation failed
ValidationErrorNotValidYet // NBF validation failed
)
// The error from Parse if token is not valid
type ValidationError struct {
err string
Errors uint32 // bitfield. see ValidationError... constants
}
// Validation error is an error type
func (e ValidationError) Error() string {
if e.err == "" {
return "token is invalid"
}
return e.err
}
// No errors
func (e *ValidationError) valid() bool {
if e.Errors > 0 {
return false
}
return true
}