github.com/zmap/zlint@v1.1.0/lints/lint_subject_not_dn.go (about)

     1  package lints
     2  
     3  /*
     4   * ZLint Copyright 2018 Regents of the University of Michigan
     5   *
     6   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
     7   * use this file except in compliance with the License. You may obtain a copy
     8   * of the License at http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
    13   * implied. See the License for the specific language governing
    14   * permissions and limitations under the License.
    15   */
    16  
    17  /*************************************************************************
    18   RFC 5280: 4.1.2.6
    19   Where it is non-empty, the subject field MUST contain an X.500
    20     distinguished name (DN). The DN MUST be unique for each subject
    21     entity certified by the one CA as defined by the issuer name field. A
    22     CA may issue more than one certificate with the same DN to the same
    23     subject entity.
    24  *************************************************************************/
    25  
    26  import (
    27  	"reflect"
    28  
    29  	"github.com/zmap/zcrypto/x509"
    30  	"github.com/zmap/zcrypto/x509/pkix"
    31  	"github.com/zmap/zlint/util"
    32  )
    33  
    34  type subjectDN struct{}
    35  
    36  func (l *subjectDN) Initialize() error {
    37  	return nil
    38  }
    39  
    40  func (l *subjectDN) CheckApplies(c *x509.Certificate) bool {
    41  	return true
    42  }
    43  
    44  func (l *subjectDN) Execute(c *x509.Certificate) *LintResult {
    45  	if reflect.TypeOf(c.Subject) != reflect.TypeOf(*(new(pkix.Name))) {
    46  		return &LintResult{Status: Error}
    47  	}
    48  	return &LintResult{Status: Pass}
    49  }
    50  
    51  func init() {
    52  	RegisterLint(&Lint{
    53  		Name:          "e_subject_not_dn",
    54  		Description:   "When not empty, the subject field MUST be a distinguished name",
    55  		Citation:      "RFC 5280: 4.1.2.6",
    56  		Source:        RFC5280,
    57  		EffectiveDate: util.RFC2459Date,
    58  		Lint:          &subjectDN{},
    59  	})
    60  }