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package cabf_br
/*
* 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 (
"strings"
"github.com/zmap/zcrypto/x509"
"github.com/zmap/zlint/v3/lint"
"github.com/zmap/zlint/v3/util"
)
type subjectCommonNameNotFromSAN struct{}
/************************************************
BRs: 7.1.4.2.2
If present, this field MUST contain a single IP address
or Fully‐Qualified Domain Name that is one of the values
contained in the Certificate’s subjectAltName extension (see Section 7.1.4.2.1).
************************************************/
func init() {
lint.RegisterCertificateLint(&lint.CertificateLint{
LintMetadata: lint.LintMetadata{
Name: "e_subject_common_name_not_from_san",
Description: "The common name field in subscriber certificates must include only names from the SAN extension",
Citation: "BRs: 7.1.4.2.2",
Source: lint.CABFBaselineRequirements,
EffectiveDate: util.CABEffectiveDate,
IneffectiveDate: util.CABFBRs_1_8_0_Date,
},
Lint: NewSubjectCommonNameNotFromSAN,
})
}
func NewSubjectCommonNameNotFromSAN() lint.LintInterface {
return &subjectCommonNameNotFromSAN{}
}
func (l *subjectCommonNameNotFromSAN) CheckApplies(c *x509.Certificate) bool {
return c.Subject.CommonName != "" && !util.IsCACert(c)
}
func (l *subjectCommonNameNotFromSAN) Execute(c *x509.Certificate) *lint.LintResult {
cn := c.Subject.CommonName
for _, dn := range c.DNSNames {
if strings.EqualFold(cn, dn) {
return &lint.LintResult{Status: lint.Pass}
}
}
for _, ip := range c.IPAddresses {
if cn == ip.String() {
return &lint.LintResult{Status: lint.Pass}
}
}
return &lint.LintResult{Status: lint.Error}
}
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