github.com/zmap/zlint@v1.1.0/lints/lint_dnsname_wildcard_left_of_public_suffix.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  	"github.com/zmap/zcrypto/x509"
    19  	"github.com/zmap/zlint/util"
    20  )
    21  
    22  type DNSNameWildcardLeftofPublicSuffix struct{}
    23  
    24  func (l *DNSNameWildcardLeftofPublicSuffix) Initialize() error {
    25  	return nil
    26  }
    27  
    28  func (l *DNSNameWildcardLeftofPublicSuffix) CheckApplies(c *x509.Certificate) bool {
    29  	return util.IsSubscriberCert(c) && util.DNSNamesExist(c)
    30  }
    31  
    32  func (l *DNSNameWildcardLeftofPublicSuffix) Execute(c *x509.Certificate) *LintResult {
    33  	if c.Subject.CommonName != "" && !util.CommonNameIsIP(c) {
    34  		domainInfo := c.GetParsedSubjectCommonName(false)
    35  		if domainInfo.ParseError != nil {
    36  			return &LintResult{Status: NA}
    37  		}
    38  
    39  		if domainInfo.ParsedDomain.SLD == "*" {
    40  			return &LintResult{Status: Warn}
    41  		}
    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  
    50  		if parsedSANDNSNames[i].ParsedDomain.SLD == "*" {
    51  			return &LintResult{Status: Warn}
    52  		}
    53  	}
    54  	return &LintResult{Status: Pass}
    55  }
    56  
    57  func init() {
    58  	RegisterLint(&Lint{
    59  		Name:          "w_dnsname_wildcard_left_of_public_suffix",
    60  		Description:   "the CA MUST establish and follow a documented procedure[^pubsuffix] that determines if the wildcard character occurs in the first label position to the left of a “registry‐controlled” label or “public suffix”",
    61  		Citation:      "BRs: 3.2.2.6",
    62  		Source:        CABFBaselineRequirements,
    63  		EffectiveDate: util.CABEffectiveDate,
    64  		Lint:          &DNSNameWildcardLeftofPublicSuffix{},
    65  	})
    66  }