Bump version to 5.11.0

vendor/github.com/golang-jwt/jwt/v4/errors.go

@@ -0,0 +1,112 @@
+package jwt
+
+import (
+	"errors"
+)
+
+// Error constants
+var (
+	ErrInvalidKey      = errors.New("key is invalid")
+	ErrInvalidKeyType  = errors.New("key is of invalid type")
+	ErrHashUnavailable = errors.New("the requested hash function is unavailable")
+
+	ErrTokenMalformed        = errors.New("token is malformed")
+	ErrTokenUnverifiable     = errors.New("token is unverifiable")
+	ErrTokenSignatureInvalid = errors.New("token signature is invalid")
+
+	ErrTokenInvalidAudience  = errors.New("token has invalid audience")
+	ErrTokenExpired          = errors.New("token is expired")
+	ErrTokenUsedBeforeIssued = errors.New("token used before issued")
+	ErrTokenInvalidIssuer    = errors.New("token has invalid issuer")
+	ErrTokenNotValidYet      = errors.New("token is not valid yet")
+	ErrTokenInvalidId        = errors.New("token has invalid id")
+	ErrTokenInvalidClaims    = errors.New("token has invalid claims")
+)
+
+// 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
+
+	// Standard Claim validation errors
+	ValidationErrorAudience      // AUD validation failed
+	ValidationErrorExpired       // EXP validation failed
+	ValidationErrorIssuedAt      // IAT validation failed
+	ValidationErrorIssuer        // ISS validation failed
+	ValidationErrorNotValidYet   // NBF validation failed
+	ValidationErrorId            // JTI validation failed
+	ValidationErrorClaimsInvalid // Generic claims validation error
+)
+
+// NewValidationError is a helper for constructing a ValidationError with a string error message
+func NewValidationError(errorText string, errorFlags uint32) *ValidationError {
+	return &ValidationError{
+		text:   errorText,
+		Errors: errorFlags,
+	}
+}
+
+// ValidationError represents an error from Parse if token is not valid
+type ValidationError struct {
+	Inner  error  // stores the error returned by external dependencies, i.e.: KeyFunc
+	Errors uint32 // bitfield.  see ValidationError... constants
+	text   string // errors that do not have a valid error just have text
+}
+
+// Error is the implementation of the err interface.
+func (e ValidationError) Error() string {
+	if e.Inner != nil {
+		return e.Inner.Error()
+	} else if e.text != "" {
+		return e.text
+	} else {
+		return "token is invalid"
+	}
+}
+
+// Unwrap gives errors.Is and errors.As access to the inner error.
+func (e *ValidationError) Unwrap() error {
+	return e.Inner
+}
+
+// No errors
+func (e *ValidationError) valid() bool {
+	return e.Errors == 0
+}
+
+// Is checks if this ValidationError is of the supplied error. We are first checking for the exact error message
+// by comparing the inner error message. If that fails, we compare using the error flags. This way we can use
+// custom error messages (mainly for backwards compatability) and still leverage errors.Is using the global error variables.
+func (e *ValidationError) Is(err error) bool {
+	// Check, if our inner error is a direct match
+	if errors.Is(errors.Unwrap(e), err) {
+		return true
+	}
+
+	// Otherwise, we need to match using our error flags
+	switch err {
+	case ErrTokenMalformed:
+		return e.Errors&ValidationErrorMalformed != 0
+	case ErrTokenUnverifiable:
+		return e.Errors&ValidationErrorUnverifiable != 0
+	case ErrTokenSignatureInvalid:
+		return e.Errors&ValidationErrorSignatureInvalid != 0
+	case ErrTokenInvalidAudience:
+		return e.Errors&ValidationErrorAudience != 0
+	case ErrTokenExpired:
+		return e.Errors&ValidationErrorExpired != 0
+	case ErrTokenUsedBeforeIssued:
+		return e.Errors&ValidationErrorIssuedAt != 0
+	case ErrTokenInvalidIssuer:
+		return e.Errors&ValidationErrorIssuer != 0
+	case ErrTokenNotValidYet:
+		return e.Errors&ValidationErrorNotValidYet != 0
+	case ErrTokenInvalidId:
+		return e.Errors&ValidationErrorId != 0
+	case ErrTokenInvalidClaims:
+		return e.Errors&ValidationErrorClaimsInvalid != 0
+	}
+
+	return false
+}