Class: Dnsruby::Classes

Inherits:
CodeMapper show all
Defined in:
lib/dnsruby.rb

Constant Summary collapse

IN =

RFC 1035

1
CH =

RFC 1035

3
HS =

CHAOS = 3 # RFC 1035

4
NONE =

HESIOD = 4 # RFC 1035

254
ANY =

RFC 2136

255

Instance Attribute Summary

Attributes inherited from CodeMapper

#code, #string

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from CodeMapper

#<=>, #==, add_pair, #hash, #initialize, #inspect, maxcode, method_missing, regexp, #set_code, #set_string, strings, to_code, to_string, update

Constructor Details

This class inherits a constructor from Dnsruby::CodeMapper

Class Method Details

.classesbyname(name) ⇒ Object

classesbyval and classesbyname functions are wrappers around the similarly named hashes. They are used for ‘unknown’ DNS RR classess (RFC3597)

See typesbyval and typesbyname, these beasts have the same functionality



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# File 'lib/dnsruby.rb', line 188

def Classes.classesbyname(name) #:nodoc: all
  name.upcase!;
  if to_code(name)
    return to_code(name)
  end
  
  if ((name =~/^\s*CLASS(\d+)\s*$/o) == nil)
    raise ArgumentError, "classesbyval() argument is not CLASS### (#{name})"
  end
  
  val = $1.to_i
  if val > 0xffff
    raise ArgumentError, 'classesbyval() argument larger than ' + 0xffff
  end
  
  return val;
end

.classesbyval(val) ⇒ Object

:nodoc: all

Raises:

  • (ArgumentError) 


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# File 'lib/dnsruby.rb', line 208

def Classes.classesbyval(val) #:nodoc: all
  if (val.class == String)
    if ((val =~ /^\s*0*([0-9]+)\s*$/) == nil)
      raise ArgumentError,  "classesbybal() argument is not numeric (#{val})" # unless  val.gsub!("^\s*0*([0-9]+)\s*$", "$1")
      #          val =~ s/^\s*0*([0-9]+)\s*$/$1/o;#
    end
    val = $1.to_i
  end
  
  return to_string(val) if to_string(val)
  
  raise ArgumentError,  'classesbyval() argument larger than ' + 0xffff if val > 0xffff;
  
  return "CLASS#{val}";
end

Instance Method Details

#unknown_code(arg) ⇒ Object 



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# File 'lib/dnsruby.rb', line 179

def unknown_code(arg)
  Classes.add_pair('CLASS' + arg.to_s, arg)
  set_code(arg)
end

#unknown_string(arg) ⇒ Object 



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# File 'lib/dnsruby.rb', line 170

def unknown_string(arg)
  if (arg=~/^CLASS/i)
    Classes.add_pair(arg, arg.gsub('CLASS', '').to_i)
    set_string(arg)
  else
    raise ArgumentError.new("String #{arg} not a member of #{self.class}")
  end
end