github.com/zmap/zlint@v1.1.0/lints/lint_dnsname_hyphen_in_sld.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  import (
    18  	"strings"
    19  
    20  	"github.com/zmap/zcrypto/x509"
    21  	"github.com/zmap/zlint/util"
    22  )
    23  
    24  type DNSNameHyphenInSLD struct{}
    25  
    26  func (l *DNSNameHyphenInSLD) Initialize() error {
    27  	return nil
    28  }
    29  
    30  func (l *DNSNameHyphenInSLD) CheckApplies(c *x509.Certificate) bool {
    31  	return util.IsSubscriberCert(c) && util.DNSNamesExist(c)
    32  }
    33  
    34  func (l *DNSNameHyphenInSLD) Execute(c *x509.Certificate) *LintResult {
    35  	if c.Subject.CommonName != "" && !util.CommonNameIsIP(c) {
    36  		domainInfo := c.GetParsedSubjectCommonName(false)
    37  		if domainInfo.ParseError != nil {
    38  			return &LintResult{Status: NA}
    39  		}
    40  		if strings.HasPrefix(domainInfo.ParsedDomain.SLD, "-") || strings.HasSuffix(domainInfo.ParsedDomain.SLD, "-") {
    41  			return &LintResult{Status: Error}
    42  		}
    43  	}
    44  	parsedSANDNSNames := c.GetParsedDNSNames(false)
    45  	for i := range c.GetParsedDNSNames(false) {
    46  		if parsedSANDNSNames[i].ParseError != nil {
    47  			return &LintResult{Status: NA}
    48  		}
    49  		if strings.HasPrefix(parsedSANDNSNames[i].ParsedDomain.SLD, "-") ||
    50  			strings.HasSuffix(parsedSANDNSNames[i].ParsedDomain.SLD, "-") {
    51  			return &LintResult{Status: Error}
    52  		}
    53  	}
    54  	return &LintResult{Status: Pass}
    55  }
    56  
    57  func init() {
    58  	RegisterLint(&Lint{
    59  		Name:          "e_dnsname_hyphen_in_sld",
    60  		Description:   "DNSName should not have a hyphen beginning or ending the SLD",
    61  		Citation:      "BRs 7.1.4.2",
    62  		Source:        CABFBaselineRequirements,
    63  		EffectiveDate: util.RFC5280Date,
    64  		Lint:          &DNSNameHyphenInSLD{},
    65  	})
    66  }