Represents a domain name ready for extracting its registered domain and TLD.
The least “universally original” domain part of this domain name. For example, “example.co.uk” for “www.sub.example.co.uk”.
The full host name normalized, ASCII-ized and downcased using the Unicode NFC rules and the Punycode algorithm. If initialized with an IP address, the string representation of the IP address suitable for opening a connection to.
Returns an IPAddr object if this is an IP address.
The TLD part of this domain name. For example, if the hostname is “www.sub.example.co.uk”, the TLD
part is “uk”. This property is nil only if ipaddr?
is true.
Returns a host name representation suitable for use in the host name part of a URI. A host name, an IPv4 address, or a IPv6 address enclosed in square brackets.
# File lib/domain_name/etld_data.rb, line 6004 def self.etld_data ETLD_DATA end
Parses hostname into a DomainName object. An IP address is also accepted. An IPv6 address may be enclosed in square brackets.
# File lib/domain_name.rb, line 60 def initialize(hostname) hostname.is_a?(String) or (hostname.respond_to?(:to_str) && (hostname = hostname.to_str).is_a?(String)) or raise TypeError, "#{hostname.class} is not a String" if hostname.start_with?(DOT) raise ArgumentError, "domain name must not start with a dot: #{hostname}" end case hostname when %r\A([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\z/ @ipaddr = IPAddr.new($1) @uri_host = @hostname = @ipaddr.to_s @domain = @tld = nil return when %r\A([0-9A-Fa-f:]*:[0-9A-Fa-f:]*:[0-9A-Fa-f:]*)\z/, %r\A\[([0-9A-Fa-f:]*:[0-9A-Fa-f:]*:[0-9A-Fa-f:]*)\]\z/ @ipaddr = IPAddr.new($1) @hostname = @ipaddr.to_s @uri_host = "[#{@hostname}]" @domain = @tld = nil return end @ipaddr = nil @hostname = DomainName.normalize(hostname) @uri_host = @hostname if last_dot = @hostname.rindex(DOT) @tld = @hostname[(last_dot + 1)..-1] else @tld = @hostname end etld_data = DomainName.etld_data if @canonical_tld_p = etld_data.key?(@tld) subdomain = domain = nil parent = @hostname loop { case etld_data[parent] when 0 @domain = domain if domain return when -1 @domain = subdomain if subdomain return when 1 @domain = parent return end subdomain = domain domain = parent pos = @hostname.index(DOT, -domain.length) or break parent = @hostname[(pos + 1)..-1] } else # unknown/local TLD if last_dot # fallback - accept cookies down to second level # cf. http://www.dkim-reputation.org/regdom-libs/ if penultimate_dot = @hostname.rindex(DOT, last_dot - 1) @domain = @hostname[(penultimate_dot + 1)..-1] else @domain = @hostname end else # no domain part - must be a local hostname @domain = @tld end end end
Normalizes a domain using the Punycode algorithm as necessary. The result will be a downcased, ASCII-only string.
# File lib/domain_name.rb, line 227 def normalize(domain) DomainName::Punycode.encode_hostname(domain.chomp(DOT).to_nfc).downcase end
# File lib/domain_name.rb, line 163 def <(other) case self <=> other when -1 true when nil nil else false end end
# File lib/domain_name.rb, line 185 def <=(other) case self <=> other when -1, 0 true when nil nil else false end end
# File lib/domain_name.rb, line 147 def <=>(other) other = DomainName.new(other) unless DomainName === other othername = other.hostname if othername == @hostname 0 elsif @hostname.end_with?(othername) && @hostname[-othername.size - 1, 1] == DOT # The other is higher -1 elsif othername.end_with?(@hostname) && othername[-@hostname.size - 1, 1] == DOT # The other is lower 1 else nil end end
# File lib/domain_name.rb, line 142 def ==(other) other = DomainName.new(other) unless DomainName === other other.hostname == @hostname end
# File lib/domain_name.rb, line 174 def >(other) case self <=> other when 1 true when nil nil else false end end
# File lib/domain_name.rb, line 196 def >=(other) case self <=> other when 1, 0 true when nil nil else false end end
Returns true if this domain name has a canonical registered domain.
# File lib/domain_name.rb, line 52 def canonical? @canonical_tld_p && (@domain ? true : false) end
Returns true if this domain name has a canonical TLD.
# File lib/domain_name.rb, line 46 def canonical_tld? @canonical_tld_p end
# File lib/domain_name.rb, line 213 def inspect str = '#<%s:%s' % [self.class.name, @hostname] if @ipaddr str << ' (ipaddr)' else str << ' domain=' << @domain if @domain str << ' tld=' << @tld if @tld end str << '>' end
Returns true if this is an IP address, such as “192.168.0.1” and “[::1]”.
# File lib/domain_name.rb, line 36 def ipaddr? @ipaddr ? true : false end
# File lib/domain_name.rb, line 207 def to_s @hostname end