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#--
#Copyright 2009 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 IPSECKEY < RR
ClassValue = nil #:nodoc: all
TypeValue = Types::IPSECKEY #:nodoc: all
#An 8-bit precedence for this field. Lower values are preferred.
attr_accessor :precedence
#Specifies the type of gateway :
# 0 - no gateway present
# 1 - 4 byte IPv4 address present
# 2 - 16 byte IPv6 address present
# 3 - wire-encoded domain name present
attr_accessor :gateway_type
#The algorithm used by this key :
# 0 - no key present
# 1 - DSA key present
# 2 - RSA key present
attr_accessor :algorithm
#The gateway. May either be a 32-bit network order IPv4 address, or a
#128-bit IPv6 address, or a domain name, or may not be present.
attr_accessor :gateway
def from_data(data) #:nodoc: all
@precedence = data[0]
@gateway_type = data[1]
@algorithm = data[2]
@public_key = nil
@gateway = load_gateway_from_string(@gateway_type, data[3])
if (@gateway)
@public_key = data[4]
else
@public_key = data[3]
end
end
def from_hash(hash)
@precedence = hash[:precedence]
@gateway_type = hash[:gateway_type]
@algorithm = hash[:algorithm]
@gateway = load_gateway_from_string(@gateway_type, hash[:gateway])
@public_key = hash[:public_key]
end
def load_gateway_from_string(gateway_type, s)
gateway = nil
if (gateway_type == 0)
gateway = nil
elsif (gateway_type == 1)
# Load IPv4 gateway
gateway = IPv4.create(s)
elsif (gateway_type == 2)
# Load IPv6 gateway
gateway = IPv6.create(s)
else
# Load gateway domain name
gateway = Name.create(s)
end
return gateway
end
def public_key_string
[@public_key.to_s].pack("m*").gsub("\n", "")
end
def public_key_from_string(key_text)
key_text.gsub!(/\n/, "")
key_text.gsub!(/ /, "")
return key_text.unpack("m*")[0]
end
def from_string(input)
if (input.length > 0)
split = input.split(" ")
@precedence = split[0].to_i
@gateway_type = split[1].to_i
@algorithm = split[2].to_i
@gateway = load_gateway_from_string(@gateway_type, split[3])
@public_key = public_key_from_string(split[4])
end
end
def rdata_to_string #:nodoc: all
ret = "#{@precedence} #{@gateway_type} #{@algorithm} "
if (@gateway_type > 0)
ret += "#{@gateway} "
end
ret += "#{public_key_string()}"
return ret
end
def encode_rdata(msg, canonical=false) #:nodoc: all
msg.put_pack('ccc', @precedence, @gateway_type, @algorithm)
if ([1,2].include?@gateway_type)
msg.put_bytes(@gateway.address)
end
if (@gateway_type == 3)
msg.put_name(@gateway, true) # gateway MUST NOT be compressed
end
msg.put_bytes(@public_key)
end
def self.decode_rdata(msg) #:nodoc: all
precedence, gateway_type, algorithm = msg.get_unpack('ccc')
gateway = nil
if (gateway_type == 1)
gateway = IPv4.new(msg.get_bytes(4))
elsif (gateway_type == 2)
gateway = IPv6.new(msg.get_bytes(16))
elsif (gateway_type == 3)
gateway = msg.get_name
end
public_key = msg.get_bytes
if (gateway_type == 0)
return self.new(
[precedence, gateway_type, algorithm, public_key])
else
return self.new(
[precedence, gateway_type, algorithm, gateway, public_key])
end
end
end
end
end
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