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package rfc
/*
* ZLint Copyright 2024 Regents of the University of Michigan
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
import (
"github.com/zmap/zcrypto/x509"
"github.com/zmap/zlint/v3/lint"
"github.com/zmap/zlint/v3/util"
)
type caSubjectEmpty struct{}
/************************************************
RFC 5280: 4.1.2.6
The subject field identifies the entity associated with the public
key stored in the subject public key field. The subject name MAY be
carried in the subject field and/or the subjectAltName extension. If
the subject is a CA (e.g., the basic constraints extension, as
discussed in Section 4.2.1.9, is present and the value of cA is
TRUE), then the subject field MUST be populated with a non-empty
distinguished name matching the contents of the issuer field (Section
4.1.2.4) in all certificates issued by the subject CA.
************************************************/
func init() {
lint.RegisterCertificateLint(&lint.CertificateLint{
LintMetadata: lint.LintMetadata{
Name: "e_ca_subject_field_empty",
Description: "The subject field of a CA certificate MUST have a non-empty distinguished name",
Citation: "RFC 5280: 4.1.2.6",
Source: lint.RFC5280,
EffectiveDate: util.RFC2459Date,
},
Lint: NewCaSubjectEmpty,
})
}
func NewCaSubjectEmpty() lint.LintInterface {
return &caSubjectEmpty{}
}
func (l *caSubjectEmpty) CheckApplies(c *x509.Certificate) bool {
return c.IsCA
}
func (l *caSubjectEmpty) Execute(c *x509.Certificate) *lint.LintResult {
if util.NotAllNameFieldsAreEmpty(&c.Subject) {
return &lint.LintResult{Status: lint.Pass}
} else {
return &lint.LintResult{Status: lint.Error}
}
}
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