Class: DNS::Zone::RR::DS

Inherits:
Record
  • Object
show all
Defined in:
lib/dns/zone/rr/ds.rb

Overview

‘DS` resource record.

RFC 4034

Direct Known Subclasses

CDS, DLV

Constant Summary collapse

REGEX_DS_RDATA = 
%r{
  (?<key_tag>\d+)\s*
  (?<algorithm>\d+)\s*
  (?<digest_type>\d+)\s*
  (?<digest>#{DNS::Zone::RR::REGEX_STRING})\s*
}mx

Instance Attribute Summary collapse

Attributes inherited from Record

#klass, #label, #ttl

Instance Method Summary collapse

Methods inherited from Record

#general_prefix, #initialize, #load_general_and_get_rdata, #type

Constructor Details

This class inherits a constructor from DNS::Zone::RR::Record

Instance Attribute Details

#algorithm ⇒ Object

Returns the value of attribute algorithm.



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# File 'lib/dns/zone/rr/ds.rb', line 13

def algorithm
  @algorithm
end

#digest ⇒ Object

Returns the value of attribute digest.



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# File 'lib/dns/zone/rr/ds.rb', line 13

def digest
  @digest
end

#digest_type ⇒ Object

Returns the value of attribute digest_type.



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# File 'lib/dns/zone/rr/ds.rb', line 13

def digest_type
  @digest_type
end

#key_tag ⇒ Object

Returns the value of attribute key_tag.



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# File 'lib/dns/zone/rr/ds.rb', line 13

def key_tag
  @key_tag
end

Instance Method Details

#dump ⇒ Object 



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# File 'lib/dns/zone/rr/ds.rb', line 15

def dump
  parts = general_prefix
  parts << key_tag
  parts << algorithm
  parts << digest_type
  parts << digest
  parts.join(' ')
end

#load(string, options = {}) ⇒ Object 



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# File 'lib/dns/zone/rr/ds.rb', line 24

def load(string, options = {})
  rdata = load_general_and_get_rdata(string, options)
  return nil unless rdata

  captures = rdata.match(REGEX_DS_RDATA)
  return nil unless captures

  @key_tag = captures[:key_tag].to_i
  @algorithm = captures[:algorithm].to_i
  @digest_type = captures[:digest_type].to_i
  @digest = captures[:digest].scan(/#{DNS::Zone::RR::REGEX_STRING}/).join
  self
end