Module: OpenSSL::SSL

Defined in:
lib/jopenssl22/openssl/ssl.rb,
lib/jopenssl18/openssl/ssl-internal.rb,
lib/jopenssl19/openssl/ssl-internal.rb

Defined Under Namespace

Classes: SSLServer, SSLSocket

Class Method Summary collapse

Class Method Details

.verify_certificate_identity(cert, hostname) ⇒ Object

FIXME: Using the old non-ASN1 logic here because our ASN1 appears to return the wrong types for some decoded objects.



27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
# File 'lib/jopenssl22/openssl/ssl.rb', line 27

def verify_certificate_identity(cert, hostname)
  should_verify_common_name = true
  cert.extensions.each { |ext|
    next if ext.oid != "subjectAltName"
    ext.value.split(/,\s+/).each { |general_name|
      # MRI 1.9.3 (since we parse ASN.1 differently)
      # when 2 # dNSName in GeneralName (RFC5280)
      if /\ADNS:(.*)/ =~ general_name
        should_verify_common_name = false
        return true if verify_hostname(hostname, $1)
      # MRI 1.9.3 (since we parse ASN.1 differently)
      # when 7 # iPAddress in GeneralName (RFC5280)
      elsif /\AIP(?: Address)?:(.*)/ =~ general_name
        should_verify_common_name = false
        return true if $1 == hostname
        # NOTE: bellow logic makes little sense as we read exts differently
        #value = $1 # follows GENERAL_NAME_print() in x509v3/v3_alt.c
        #if value.size == 4
        #  return true if value.unpack('C*').join('.') == hostname
        #elsif value.size == 16
        #  return true if value.unpack('n*').map { |e| sprintf("%X", e) }.join(':') == hostname
        #end
      end
    }
  }
  if should_verify_common_name
    cert.subject.to_a.each { |oid, value|
      if oid == "CN"
        return true if verify_hostname(hostname, value)
      end
    }
  end
  return false
end

.verify_hostname(hostname, san) ⇒ Object

:nodoc:



63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
# File 'lib/jopenssl22/openssl/ssl.rb', line 63

def verify_hostname(hostname, san) # :nodoc:
  # RFC 5280, IA5String is limited to the set of ASCII characters
  return false unless san.ascii_only?
  return false unless hostname.ascii_only?

  # See RFC 6125, section 6.4.1
  # Matching is case-insensitive.
  san_parts = san.downcase.split(".")

  # TODO: this behavior should probably be more strict
  return san == hostname if san_parts.size < 2

  # Matching is case-insensitive.
  host_parts = hostname.downcase.split(".")

  # RFC 6125, section 6.4.3, subitem 2.
  # If the wildcard character is the only character of the left-most
  # label in the presented identifier, the client SHOULD NOT compare
  # against anything but the left-most label of the reference
  # identifier (e.g., *.example.com would match foo.example.com but
  # not bar.foo.example.com or example.com).
  return false unless san_parts.size == host_parts.size

  # RFC 6125, section 6.4.3, subitem 1.
  # The client SHOULD NOT attempt to match a presented identifier in
  # which the wildcard character comprises a label other than the
  # left-most label (e.g., do not match bar.*.example.net).
  return false unless verify_wildcard(host_parts.shift, san_parts.shift)

  san_parts.join(".") == host_parts.join(".")
end

.verify_wildcard(domain_component, san_component) ⇒ Object

:nodoc:



96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
# File 'lib/jopenssl22/openssl/ssl.rb', line 96

def verify_wildcard(domain_component, san_component) # :nodoc:
  parts = san_component.split("*", -1)

  return false if parts.size > 2
  return san_component == domain_component if parts.size == 1

  # RFC 6125, section 6.4.3, subitem 3.
  # The client SHOULD NOT attempt to match a presented identifier
  # where the wildcard character is embedded within an A-label or
  # U-label of an internationalized domain name.
  return false if domain_component.start_with?("xn--") && san_component != "*"

  parts[0].length + parts[1].length < domain_component.length &&
  domain_component.start_with?(parts[0]) &&
  domain_component.end_with?(parts[1])
end