Class: Whois::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/whois/server.rb,
lib/whois/server/adapters/web.rb,
lib/whois/server/adapters/arin.rb,
lib/whois/server/adapters/arpa.rb,
lib/whois/server/adapters/base.rb,
lib/whois/server/adapters/none.rb,
lib/whois/server/socket_handler.rb,
lib/whois/server/adapters/afilias.rb,
lib/whois/server/adapters/standard.rb,
lib/whois/server/adapters/verisign.rb,
lib/whois/server/adapters/formatted.rb,
lib/whois/server/adapters/not_implemented.rb

Overview

The Server class has two important roles:

  1. it acts as a database for the WHOIS server definitions

  2. it is responsible for selecting the right adapter used to handle the query to the WHOIS server(s).

Defined Under Namespace

Modules: Adapters Classes: SocketHandler

Constant Summary collapse

TYPES =

Returns the definition types.

Returns:

  • (Array<Symbol>) —

    the definition types

[
  TYPE_TLD = :tld,
  TYPE_IPV4  = :ipv4,
  TYPE_IPV6  = :ipv6,
  TYPE_ASN16 = :asn16,
  TYPE_ASN32 = :asn32,
].freeze

Class Method Summary collapse

Class Method Details

.clear_definitions ⇒ void

This method returns an undefined value.

Clears the definition and reset them to an empty list.



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# File 'lib/whois/server.rb', line 59

def clear_definitions
  @definitions = {}
end

.define(type, allocation, host, options = EMPTY_HASH) ⇒ void

This method returns an undefined value.

Defines a new server for :type queries.

Examples:


# Define a server for the .it extension
Whois::Server.define :tld, "it", "whois.nic.it"

# Define a new server for an range of IPv4 addresses
Whois::Server.define :ipv4, "61.192.0.0/12", "whois.nic.ad.jp"

# Define a new server for an range of IPv6 addresses
Whois::Server.define :ipv6, "2001:2000::/19", "whois.ripe.net"

# Define a new server with a custom adapter
Whois::Server.define :tld, "test", nil,
  :adapter => Whois::Server::Adapter::None

# Define a new server with a custom adapter and options
Whois::Server.define :tld, "ar", nil,
  :adapter => Whois::Server::Adapters::Web,
  :url => "http://www.nic.ar/"

Parameters:

  • type (Symbol) —

    The type of WHOIS server to define. Known values are :tld, :ipv4, :ipv6.

  • allocation (String) —

    The allocation, range or hostname, this server is responsible for.

  • host (String, nil) —

    The server hostname. Use nil if unknown or not available.

  • options (Hash) (defaults to: EMPTY_HASH) —

    Optional definition properties.

Options Hash (options):

  • :adapter (Class) — default: Whois::Server::Adapters::Standard —

    This option has a special meaning and determines the adapter Class to use. Defaults to Whois::Server::Adapters::Standard unless specified. All the other options are passed directly to the adapter which can decide how to use them.



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# File 'lib/whois/server.rb', line 158

def define(type, allocation, host, options = EMPTY_HASH)
  TYPES.include?(type) or
    raise(ArgumentError, "`#{type}` is not a valid definition type")

  _definitions(type)[allocation] = [allocation, host, options.freeze]
end

.definitions(type) ⇒ { Symbol => Array }, Array<Hash>

Lookup and returns the definition list for given ‘type`.

Examples:

Return the definitions for given key.


Whois::Server.definitions(:tld)
# => [...]

Whois::Server.definitions(:invalid)
# => nil

Parameters:

  • type (Symbol) —

    The type of WHOIS server to lookup. See Whois::Server::TYPES for valid types.

Returns:

  • ({ Symbol => Array }) —

    The definition Hash if type is nil.

  • (Array<Hash>) —

    The definitions for given type if type is not nil and type exists.



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# File 'lib/whois/server.rb', line 114

def definitions(type)
  TYPES.include?(type) or
    raise(ArgumentError, "`#{type}` is not a valid definition type")

  _definitions(type).values
end

.factory(type, allocation, host, options = {}) ⇒ Whois::Server::Adapters::Base

Creates a new server adapter from given arguments and returns the server instance.

By default, returns a new Whois::Server::Adapters::Standard instance. You can customize the behavior passing a custom adapter class as :adapter option.

Whois::Server.factory :tld, "it", "whois.nic.it"
# => #<Whois::Servers::Adapter::Standard>

Whois::Server.factory :tld, "it", "whois.nic.it",
  :option => Whois::Servers::Adapter::Custom
# => #<Whois::Servers::Adapter::Custom>

Please note that any adapter is responsible for a limited set of queries, which should be included in the range of the allocation parameter. Use guess if you are not sure which adapter is the right one for a specific string.

Parameters:

  • type (Symbol) —

    The type of WHOIS server to define. Known values are :tld, :ipv4, :ipv6.

  • allocation (String) —

    The allocation, range or hostname, this server is responsible for.

  • host (String, nil) —

    The server hostname. Use nil if unknown or not available.

  • options (Hash) (defaults to: {}) —

    Optional definition properties.

Options Hash (options):

  • :adapter (Class) — default: Whois::Server::Adapters::Standard —

    This option has a special meaning and determines the adapter Class to use. Defaults to Whois::Server::Adapters::Standard unless specified. All the other options are passed directly to the adapter which can decide how to use them.

Returns:



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# File 'lib/whois/server.rb', line 199

def factory(type, allocation, host, options = {})
  options = options.dup
  adapter = options.delete(:adapter) || Adapters::Standard
  adapter = Adapters.const_get(camelize(adapter)) unless adapter.respond_to?(:new)
  adapter.new(type, allocation, host, options)
end

.find_for_asn(string) ⇒ Whois::Server::Adapters::Base?

Searches for definition that matches given ASN string.

Parameters:

  • string (String)

Returns:

Raises:

  • (Whois::AllocationUnknown) —

    when the IP doesn’t have a specific known allocation that matches one of the existing server definitions.



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# File 'lib/whois/server.rb', line 321

def find_for_asn(string)
  asn = string[/\d+/].to_i
  asn_type = asn <= 65_535 ? TYPE_ASN16 : TYPE_ASN32
  _definitions(asn_type).each_value do |definition|
    if (range = definition.first.split.map(&:to_i)) && asn >= range.first && asn <= range.last
      return factory(asn_type, *definition)
    end
  end
  raise AllocationUnknown, "Unknown AS number - `#{asn}'."
end

.find_for_domain(string) ⇒ Whois::Server::Adapters::Base?

Searches for definition that matches given domain.

Parameters:

  • string (String)

Returns:



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# File 'lib/whois/server.rb', line 295

def find_for_domain(string)
  token = string
  defs  = _definitions(TYPE_TLD)

  while token != ""
    if (found = defs[token])
      return factory(:tld, *found)
    else
      index = token.index(".")
      break if index.nil?

      token = token[(index + 1)..]
    end
  end

  nil
end

.find_for_email(string) ⇒ Object

Searches for definition that matches given email.

Parameters:

  • string (String)

Raises:



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# File 'lib/whois/server.rb', line 286

def find_for_email(string)
  raise ServerNotSupported, "No WHOIS server is known for email objects"
end

.find_for_ip(string) ⇒ Whois::Server::Adapters::Base?

Searches for definition that matches given IP.

Parameters:

  • string (String)

Returns:

Raises:

  • (Whois::AllocationUnknown) —

    when the IP doesn’t have a specific known allocation that matches one of the existing server definitions.



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# File 'lib/whois/server.rb', line 267

def find_for_ip(string)
  begin
    ip = IPAddr.new(string)
    type = ip.ipv4? ? TYPE_IPV4 : TYPE_IPV6
    _definitions(type).each_value do |definition|
      return factory(type, *definition) if IPAddr.new(definition.first).include?(ip)
    end
  rescue ArgumentError
    # continue
    nil
  end
  raise AllocationUnknown, "IP Allocation for `#{string}' unknown"
end

.guess(string) ⇒ Whois::Server::Adapters::Base

Parses string and tries to guess the right server.

It successfully detects the following query types:

  • ipv6

  • ipv4

  • top level domains (e.g. .com, .net, .it)

  • domain names (e.g. google.com, google.net, google.it)

  • emails

Note that not all query types actually have a corresponding adapter. For instance, the following request will result in a Whois::ServerNotSupported exception.

Whois::Server.guess "[email protected]"

Parameters:

  • string (String)

Returns:

Raises:

  • (Whois::AllocationUnknown) —

    when the input is an IP, but the IP doesn’t have a specific known allocation that matches one of the existing server definitions.

  • (Whois::ServerNotFound) —

    when unable to find an appropriate WHOIS adapter. In most of the cases, the input is not recognised as one of the supported query types.

  • (Whois::ServerNotSupported) —

    when the string type is detected, but the object type doesn’t have any supported WHOIS adapter associated.



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# File 'lib/whois/server.rb', line 236

def guess(string)
  # Top Level Domain match
  return factory(:tld, ".", "whois.iana.org") if matches_tld?(string)

  # IP address (secure match)
  return find_for_ip(string) if matches_ip?(string)

  # Email Address (secure match)
  return find_for_email(string) if matches_email?(string)

  # Domain Name match
  if (server = find_for_domain(string))
    return server
  end

  # ASN match
  return find_for_asn(string) if matches_asn?(string)

  # Game Over
  raise ServerNotFound, "Unable to find a WHOIS server for `#{string}'"
end

.load_definitions ⇒ void

This method returns an undefined value.

Searches the /definitions folder for definition files and loads them. This method is automatically invoked when this file is parsed by the Ruby interpreter (scroll down to the bottom of this file).



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# File 'lib/whois/server.rb', line 68

def load_definitions
  clear_definitions
  Dir[File.expand_path('../../data/*.json', __dir__)].each { |f| load_json(f) }
end

.load_json(file) ⇒ void

This method returns an undefined value.

Loads the definitions from a JSON file.

Parameters:

  • file (String) —

    The path to the definition file.



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# File 'lib/whois/server.rb', line 78

def load_json(file)
  type = File.basename(file, File.extname(file)).to_sym
  JSON.parse(File.read(file)).each do |allocation, settings|
    next if allocation == "_"

    settings.reject! { |k, _| k.start_with?("_") }
    host = settings.delete("host")
    host = intern_string(host) if host
    options = if settings.empty?
                EMPTY_HASH
              else
                settings.to_h { |k, v| [k.to_sym, v.is_a?(String) ? intern_string(v) : v] }.freeze
              end
    define(type, allocation, host, options)
  end
end