Class: Net::DNS::RR::AFSDB

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

Overview

NAME

Net::DNS::RR::AFSDB - DNS AFSDB resource record

DESCRIPTION

Class for DNS AFS Data Base (AFSDB) resource records.

COPYRIGHT

Copyright © 1997-2002 Michael Fuhr.

Portions Copyright © 2002-2004 Chris Reinhardt.

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, RFC 1183 Section 1

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, #init_rrsort_func, #inspect, new_from_data, new_from_hash, new_from_string, #set_rrsort_func

Instance Attribute Details

#hostname ⇒ Object

Returns the RR’s hostname field. See RFC 1183.

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



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

def hostname
  @hostname
end

#subtype ⇒ Object

Returns the RR’s subtype field. Use of the subtype field is documented in RFC 1183.

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



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# File 'lib/Net/DNS/RR/AFSDB.rb', line 47

def subtype
  @subtype
end

Instance Method Details

#_canonicalRdata ⇒ Object 



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

def _canonicalRdata
  # rdata contains a compressed domainname... we should not have that.
  rdata="";
  if (defined?@subtype)
    rdata += @subtype.pack("n");
    rdata +=  _name2wire(@hostname);
  end
  return rdata;
end

#new_from_data(data, offset) ⇒ Object 



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# File 'lib/Net/DNS/RR/AFSDB.rb', line 54

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

#new_from_hash(values) ⇒ Object 



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# File 'lib/Net/DNS/RR/AFSDB.rb', line 72

def new_from_hash(values)
  if (values.has_key?(:subtype))
    @subtype=values[:subtype]
  end
  if (values.has_key?(:hostname))
    @hostname=values[:hostname]
  end
end

#new_from_string(string) ⇒ Object 



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# File 'lib/Net/DNS/RR/AFSDB.rb', line 64

def new_from_string(string)
  if (string!=nil && (string =~ /^(\d+)\s+(\S+)$/o))
    @subtype  = $1;
    @hostname = $2;
    @hostname.sub!(/\.+$/o,"");
  end
end

#rdatastr ⇒ Object 



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# File 'lib/Net/DNS/RR/AFSDB.rb', line 81

def rdatastr
  if defined?@subtype
    return "#{@subtype} #{@hostname}." 
  else
    return '';
  end
end

#rr_rdata(packet, offset) ⇒ Object 



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# File 'lib/Net/DNS/RR/AFSDB.rb', line 89

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