Class: Net::DNS::RR::PX

Inherits:
Net::DNS::RR show all
Defined in:
lib/Net/DNS/RR/PX.rb

Overview

NAME

Net::DNS::RR::PX - DNS PX resource record

DESCRIPTION

Class for DNS X.400 Mail Mapping Information (PX) resource records.

COPYRIGHT

Copyright © 1997-2002 Michael Fuhr.

Portions Copyright © 2002-2004 Chris Reinhardt. Portions Copyright © 2005 Olaf Kolkman NLnet Labs. Ruby version Copyright © 2006 Alexd ( Nominet UK ).

All rights reserved. This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

Net::DNS, Net::DNS::Resolver, Net::DNS::Packet, Net::DNS::Header, Net::DNS::Question, Net::DNS::RR, RFC822, RFC 1327, RFC 2163

Constant Summary

Constants inherited from Net::DNS::RR

RRS

Instance Attribute Summary collapse

Attributes inherited from Net::DNS::RR

#name, #rdata, #rdlength, #rrclass, #ttl, #type

Instance Method Summary collapse

Methods inherited from Net::DNS::RR

#_canonicaldata, _get_subclass, #_name2wire, _name2wire, build_regex, create, #create_rrsort_func, #data, #get_rrsort_func, #init, #inspect, new_from_data, new_from_hash, new_from_string, #set_rrsort_func

Instance Attribute Details

#map822 ⇒ Object

Returns the RFC822 part of the RFC1327 mapping information.

print "map822 = ", rr.map822, "\n"



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# File 'lib/Net/DNS/RR/PX.rb', line 53

def map822
  @map822
end

#mapx400 ⇒ Object

Returns the X.400 part of the RFC1327 mapping information.

print "mapx400 = ", rr.mapx400, "\n"



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# File 'lib/Net/DNS/RR/PX.rb', line 58

def mapx400
  @mapx400
end

#preference ⇒ Object

Returns the preference given to this RR.

print "preference = ", rr.preference, "\n"



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# File 'lib/Net/DNS/RR/PX.rb', line 48

def preference
  @preference
end

Instance Method Details

#_canonicalRdata ⇒ Object 



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# File 'lib/Net/DNS/RR/PX.rb', line 117

def _canonicalRdata
  rdata = "";
  
  if (defined?@preference)
    rdata += [@preference].pack("n");
    rdata += _name2wire(@map822);					   
    rdata += _name2wire(@mapx400);
  end
  
  return rdata;
end

#init_rrsort_func ⇒ Object

Highest preference sorted first.



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# File 'lib/Net/DNS/RR/PX.rb', line 61

def init_rrsort_func 
  set_rrsort_func("preference", Proc.new { |a,b|  a.preference <=> b.preference});                    
  set_rrsort_func("default_sort", get_rrsort_func("preference"));
end

#new_from_data(data, offset) ⇒ Object 



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# File 'lib/Net/DNS/RR/PX.rb', line 66

def new_from_data(data, offset)
  if (@rdlength > 0)
    @preference = data.unpack("\@#{offset} n")[0];
    offset += Net::DNS::INT16SZ;
    
     (@map822,  offset) = Net::DNS::Packet::dn_expand(data, offset);
     (@mapx400, offset) = Net::DNS::Packet::dn_expand(data, offset);
  end
end

#new_from_hash(values) ⇒ Object 



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# File 'lib/Net/DNS/RR/PX.rb', line 86

def new_from_hash(values)
  if values.has_key?(:preference)
    @preference = values[:preference]
  end
  if values.has_key?(:map822)
    @map822 = values[:map822]
  end
  if values.has_key?(:mapx400)
    @mapx400 = values[:mapx400]
  end
end

#new_from_string(string) ⇒ Object 



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# File 'lib/Net/DNS/RR/PX.rb', line 76

def new_from_string(string)
  if (string && (string =~ /^(\d+)\s+(\S+)\s+(\S+)$/))
    @preference = $1;
    @map822     = $2;
    @mapx400    = $3;
    @map822.sub!(/\.+$/,"")
    @mapx400.sub!(/\.+$/,"")
  end
end

#rdatastr ⇒ Object 



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# File 'lib/Net/DNS/RR/PX.rb', line 98

def rdatastr
  return @preference ? "#{@preference} #{@map822}. #{@mapx400}." : '';
end

#rr_rdata(packet, offset) ⇒ Object 



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# File 'lib/Net/DNS/RR/PX.rb', line 102

def rr_rdata(packet, offset)
  rdata = "";
  
  if (defined?@preference)
    rdata += [@preference].pack("n");
    
    rdata += packet.dn_comp(@map822, offset + rdata.length);
    
    rdata += packet.dn_comp(@mapx400, offset + rdata.length);
  end
  
  return rdata;
end