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#--
#Copyright 2007 Nominet UK
#
#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.
#++
module Dnsruby
class RR
#Class for DNS Certificate (CERT) resource records. (see RFC 2538)
#
#RFC 2782
class CERT < RR
ClassValue = nil #:nodoc: all
TypeValue = Types::CERT #:nodoc: all
#Returns the format code for the certificate
attr_accessor :certtype
#Returns the key tag for the public key in the certificate
attr_accessor :keytag
#Returns the algorithm used by the certificate
attr_accessor :alg
#Returns the data comprising the certificate itself (in raw binary form)
attr_accessor :cert
class CertificateTypes < CodeMapper
PKIX = 1 # PKIX (X.509v3)
SPKI = 2 # Simple Public Key Infrastructure
PGP = 3 # Pretty Good Privacy
IPKIX = 4 # URL of an X.509 data object
ISPKI = 5 # URL of an SPKI certificate
IPGP = 6 # Fingerprint and URL of an OpenPGP packet
ACPKIX = 7 # Attribute Certificate
IACPKIX = 8 # URL of an Attribute Certificate
URI = 253 # Certificate format defined by URI
OID = 254 # Certificate format defined by OID
update()
end
def from_data(data) #:nodoc: all
@certtype = CertificateTypes::new(data[0])
@keytag = data[1]
@alg = Dnsruby::Algorithms.new(data[2])
@cert= data[3]
end
def from_hash(hash) #:nodoc: all
@certtype = CertificateTypes::new(hash[:certtype])
@keytag = hash[:keytag]
@alg = Dnsruby::Algorithms.new(hash[:alg])
@cert= hash[:cert]
end
def from_string(input) #:nodoc: all
if (input != "")
names = input.split(" ")
begin
@certtype = CertificateTypes::new(names[0])
rescue ArgumentError
@certtype = CertificateTypes::new(names[0].to_i)
end
@keytag = names[1].to_i
begin
@alg = Dnsruby::Algorithms.new(names[2])
rescue ArgumentError
@alg = Dnsruby::Algorithms.new(names[2].to_i)
end
buf = ""
(names.length - 3).times {|index|
buf += names[index + 3]
}
buf.gsub!(/\n/, "")
buf.gsub!(/ /, "")
@cert = buf.unpack("m*").first
end
end
def rdata_to_string #:nodoc: all
return "#{@certtype.string} #{@keytag} #{@alg.string} #{[@cert.to_s].pack("m*").gsub("\n", "")}"
end
def encode_rdata(msg, canonical=false) #:nodoc: all
msg.put_pack('nnc', @certtype.code, @keytag, @alg.code)
msg.put_bytes(@cert)
end
def self.decode_rdata(msg) #:nodoc: all
certtype, keytag, alg = msg.get_unpack('nnc')
cert = msg.get_bytes
return self.new([certtype, keytag, alg, cert])
end
end
end
end
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