435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
package jwt
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// Implements the none signing method. This is required by the spec
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// but you probably should never use it.
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var SigningMethodNone *signingMethodNone
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const UnsafeAllowNoneSignatureType unsafeNoneMagicConstant = "none signing method allowed"
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var NoneSignatureTypeDisallowedError error
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type signingMethodNone struct{}
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type unsafeNoneMagicConstant string
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func init() {
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SigningMethodNone = &signingMethodNone{}
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NoneSignatureTypeDisallowedError = NewValidationError("'none' signature type is not allowed", ValidationErrorSignatureInvalid)
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RegisterSigningMethod(SigningMethodNone.Alg(), func() SigningMethod {
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return SigningMethodNone
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})
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}
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func (m *signingMethodNone) Alg() string {
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return "none"
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}
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// Only allow 'none' alg type if UnsafeAllowNoneSignatureType is specified as the key
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func (m *signingMethodNone) Verify(signingString, signature string, key interface{}) (err error) {
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// Key must be UnsafeAllowNoneSignatureType to prevent accidentally
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// accepting 'none' signing method
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if _, ok := key.(unsafeNoneMagicConstant); !ok {
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return NoneSignatureTypeDisallowedError
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}
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// If signing method is none, signature must be an empty string
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if signature != "" {
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return NewValidationError(
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"'none' signing method with non-empty signature",
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ValidationErrorSignatureInvalid,
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)
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}
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// Accept 'none' signing method.
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return nil
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}
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// Only allow 'none' signing if UnsafeAllowNoneSignatureType is specified as the key
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func (m *signingMethodNone) Sign(signingString string, key interface{}) (string, error) {
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if _, ok := key.(unsafeNoneMagicConstant); ok {
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return "", nil
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}
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return "", NoneSignatureTypeDisallowedError
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}
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