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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 (
"unicode"
"github.com/zmap/zcrypto/x509"
"github.com/zmap/zlint/v3/lint"
"github.com/zmap/zlint/v3/util"
)
type extSANURINotIA5 struct{}
/************************************************
When the subjectAltName extension contains a URI, the name MUST be
stored in the uniformResourceIdentifier (an IA5String).
************************************************/
func init() {
lint.RegisterCertificateLint(&lint.CertificateLint{
LintMetadata: lint.LintMetadata{
Name: "e_ext_san_uri_not_ia5",
Description: "When subjectAlternateName contains a URI, the name MUST be an IA5 string",
Citation: "RFC5280: 4.2.1.6",
Source: lint.RFC5280,
EffectiveDate: util.RFC5280Date,
},
Lint: NewExtSANURINotIA5,
})
}
func NewExtSANURINotIA5() lint.LintInterface {
return &extSANURINotIA5{}
}
func (l *extSANURINotIA5) CheckApplies(c *x509.Certificate) bool {
return util.IsExtInCert(c, util.SubjectAlternateNameOID)
}
func (l *extSANURINotIA5) Execute(c *x509.Certificate) *lint.LintResult {
for _, uri := range c.URIs {
for _, c := range uri {
if c > unicode.MaxASCII {
return &lint.LintResult{Status: lint.Error}
}
}
}
return &lint.LintResult{Status: lint.Pass}
}
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