Class: Dnsruby::Question

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(qname, qtype = :not_provided, qclass = :not_provided) ⇒ 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.

Raises:

  • (ArgumentError) 


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# File 'lib/dnsruby/message/question.rb', line 21

def initialize(qname, qtype = :not_provided, qclass = :not_provided)

  raise ArgumentError.new('qname must not be nil') if qname.nil?

  @qtype  = (qtype  == :not_provided) ? Types::A    : Types.new(qtype)
  @qclass = (qclass == :not_provided) ? Classes::IN : Classes.new(qclass)
  set_qname(qname, qtype == :not_provided)
end

Instance Attribute Details

#qclass ⇒ Object Also known as: zclass

The Question class



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# File 'lib/dnsruby/message/question.rb', line 13

def qclass
  @qclass
end

#qname ⇒ Object Also known as: zname

The Question name



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# File 'lib/dnsruby/message/question.rb', line 9

def qname
  @qname
end

#qtype ⇒ Object Also known as: ztype, type

The Question type



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# File 'lib/dnsruby/message/question.rb', line 11

def qtype
  @qtype
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/dnsruby/message/question.rb', line 65

def ==(other)
  other.is_a?(Question) &&
      self.qname  == other.qname  &&
      self.qtype  == other.qtype  &&
      self.qclass == Classes.new(other.qclass)
end

#set_qname(qname, write_PTR_to_qtype_if_ip = true) ⇒ Object 



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# File 'lib/dnsruby/message/question.rb', line 38

def set_qname(qname, write_PTR_to_qtype_if_ip = true)
  is_ipv4_addr_string = qname.is_a?(String) && IPv4::Regex.match(qname)
  is_ipv6_addr_string = qname.is_a?(String) && IPv6::Regex.match(qname)
  is_ip_addr_string = is_ipv4_addr_string || is_ipv6_addr_string

  is_ip_addr = [IPv4, IPv6].any? { |klass| qname.is_a?(klass) }

  if is_ipv4_addr_string
    @qname = IPv4.create(qname).to_name
  elsif is_ipv6_addr_string
    @qname = IPv6.create(qname).to_name
  else
    @qname = Name.create(qname)
  end

  #  If the name looks like an IP address then do an appropriate
  #  PTR query, unless the user specified the qtype
  if write_PTR_to_qtype_if_ip && (is_ip_addr || is_ip_addr_string)
    @qtype = Types.PTR
  end
  @qname.absolute = true
end

#to_s ⇒ Object

Returns a string representation of the question record.



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# File 'lib/dnsruby/message/question.rb', line 73

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