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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 HIP < RR
ClassValue = nil #:nodoc: all
TypeValue = Types::HIP #:nodoc: all
#An 8-bit length for the HIT field
attr_accessor :hit_length
#The PK algorithm used :
# 0 - no key present
# 1 - DSA key present
# 2 - RSA key present
attr_accessor :pk_algorithm
#An 8-bit length for the Public Key field
attr_accessor :pk_length
#An array of Rendezvous Servers
attr_accessor :rsvs
def from_data(data) #:nodoc: all
@rsvs=[]
@hit_length = data[0]
@pk_algorithm = data[1]
@pk_length = data[2]
@hit = data[3]
@public_key = data[4]
@rsvs = data[5]
end
def from_hash(hash)
@rsvs=[]
@hit_length = hash[:hit_length]
@pk_algorithm = hash[:pk_algorithm]
@pk_length = hash[:pk_length]
@hit = hash[:hit]
@public_key = hash[:public_key]
if (hash[:rsvs])
hash[:rsvs].each {|rsv|
@rsvs.push(Name.create(rsv))
}
end
end
#HIT field - stored in binary : client methods should handle base16(hex) encoding
def hit_string
# Return hex value
[@hit.to_s].pack("H*").gsub("\n", "")
end
def hit_from_string(hit_text)
# Decode the hex value
hit_text.gsub!(/\n/, "")
hit_text.gsub!(/ /, "")
return hit_text.unpack("H*")[0]
end
#Public Key field - presentation format is base64 - public_key methods reused from IPSECKEY
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)
@rsvs=[]
if (input.length > 0)
split = input.split(" ")
@pk_algorithm = split[0].to_i
@hit = hit_from_string(split[1])
@hit_length = @hit.length
@public_key = public_key_from_string(split[2])
@pk_length = @public_key.length
# Now load in any RSVs there may be
count = 3
while (split[count])
@rsvs.push(Name.create(split[count]))
count += 1
end
end
end
def rdata_to_string #:nodoc: all
ret = "#{@pk_algorithm} #{hit_string} #{public_key_string}"
@rsvs.each {|rsv|
ret += " #{rsv.to_s(true)}"
}
return ret
end
def encode_rdata(msg, canonical=false) #:nodoc: all\
msg.put_pack('ccC', @hit_length, @pk_algorithm, @pk_length)
msg.put_bytes(@hit)
msg.put_bytes(@public_key)
@rsvs.each {|rsv|
# RSVs MUST NOT be compressed
msg.put_name(rsv, true)
}
end
def self.decode_rdata(msg) #:nodoc: all
hit_length, pk_algorithm, pk_length = msg.get_unpack('ccC')
hit = msg.get_bytes(hit_length)
public_key = msg.get_bytes(pk_length)
rsvs = []
# Load in the RSV names, if there are any
while (msg.has_remaining)
name = msg.get_name
rsvs.push(name)
end
return self.new(
[hit_length, pk_algorithm, pk_length, hit, public_key, rsvs])
end
end
end
end
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