Class: Dnsruby::Question

Inherits:
Object
  • Object
show all
Defined in:
lib/Dnsruby/message.rb

Overview

A Dnsruby::Question object represents a record in the question section of a DNS packet.

RFC 1035 Section 4.1.2

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Question

Creates a question object from the domain, type, and class passed as arguments.

If a String is passed in, a Name, IPv4 or IPv6 object is created.

If an IPv4 or IPv6 object is used then the type is set to PTR.



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# File 'lib/Dnsruby/message.rb', line 1124

def initialize(*args)
  @qtype = Types::A
  @qclass = Classes::IN
  type_given = false
  if (args.length > 0)
    if (args.length > 1)
      @qtype = Types.new(args[1])
      type_given = true
      if (args.length > 2)
        @qclass = Classes.new(args[2])
      end
    end
  else
    raise ArgumentError.new("Must pass at least a name!")
  end
  # If the name looks like an IP address then do an appropriate
  # PTR query, unless the user specified the qtype
  @qname=args[0]
  if (!type_given)
    case @qname.to_s
    when IPv4::Regex
      @qname = IPv4.create(@qname).to_name
      @qtype = Types.PTR
    when IPv6::Regex
      @qname = IPv6.create(@qname).to_name
      @qtype = Types.PTR
    when Name
    when IPv6
      @qtype = Types.PTR
    when IPv4
      @qtype = Types.PTR
    else
      @qname = Name.create(@qname)
    end
  else
    case @qtype
    when Types.PTR
      case @qname.to_s
      when IPv4::Regex
        @qname = IPv4.create(@qname).to_name
      when IPv6::Regex
        @qname = IPv6.create(@qname).to_name
      when IPv6
      when IPv4
      else
        @qname = Name.create(@qname)
      end
    else
      @qname = Name.create(@qname)
    end
  end
end

Instance Attribute Details

#qclass ⇒ Object Also known as: zclass

The Question class



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# File 'lib/Dnsruby/message.rb', line 1116

def qclass
  @qclass
end

#qname ⇒ Object Also known as: zname

The Question name



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# File 'lib/Dnsruby/message.rb', line 1112

def qname
  @qname
end

#qtype ⇒ Object Also known as: ztype, type

The Question type



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# File 'lib/Dnsruby/message.rb', line 1114

def qtype
  @qtype
end

Instance Method Details

#to_s ⇒ Object

Returns a string representation of the question record.



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# File 'lib/Dnsruby/message.rb', line 1204

def to_s
  return "#{@qname}.\t#{@qclass.string}\t#{@qtype.string}";
end