60 lines
1.8 KiB
Go
60 lines
1.8 KiB
Go
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package jwt
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import (
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"errors"
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)
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// Error constants
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var (
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ErrInvalidKey = errors.New("key is invalid")
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ErrInvalidKeyType = errors.New("key is of invalid type")
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ErrHashUnavailable = errors.New("the requested hash function is unavailable")
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)
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// The errors that might occur when parsing and validating a token
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const (
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ValidationErrorMalformed uint32 = 1 << iota // Token is malformed
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ValidationErrorUnverifiable // Token could not be verified because of signing problems
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ValidationErrorSignatureInvalid // Signature validation failed
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// Standard Claim validation errors
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ValidationErrorAudience // AUD validation failed
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ValidationErrorExpired // EXP validation failed
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ValidationErrorIssuedAt // IAT validation failed
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ValidationErrorIssuer // ISS validation failed
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ValidationErrorNotValidYet // NBF validation failed
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ValidationErrorId // JTI validation failed
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ValidationErrorClaimsInvalid // Generic claims validation error
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)
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// Helper for constructing a ValidationError with a string error message
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func NewValidationError(errorText string, errorFlags uint32) *ValidationError {
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return &ValidationError{
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text: errorText,
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Errors: errorFlags,
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}
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}
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// The error from Parse if token is not valid
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type ValidationError struct {
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Inner error // stores the error returned by external dependencies, i.e.: KeyFunc
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Errors uint32 // bitfield. see ValidationError... constants
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text string // errors that do not have a valid error just have text
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}
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// Validation error is an error type
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func (e ValidationError) Error() string {
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if e.Inner != nil {
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return e.Inner.Error()
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} else if e.text != "" {
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return e.text
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} else {
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return "token is invalid"
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}
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}
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// No errors
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func (e *ValidationError) valid() bool {
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return e.Errors == 0
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}
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