Class: MonoVM::Whois::Availability::Rules::StatusField

Inherits:
MonoVM::Whois::Availability::Rule show all
Defined in:
lib/monovm/whois/availability/rules/status_field.rb

Overview

An explicit status field stating the name is free.

Some detectors pair this check with a second inference: "fewer than two registration fields present" also counts as availability. That inference is unsound and is deliberately not reproduced. Every response that is not a record has fewer than two registration fields — a rate-limit notice, a blocked-client message, a legal preamble, a truncated read — so it converts any non-answer into "free to register".

Genuine availability always carries a positive signal, and the keyword, not-found and per-TLD rules already look for it. The one case where silence really is the only signal is handled by Recordless, which requires an explicit per-TLD opt-in.

Instance Method Summary collapse

Methods inherited from MonoVM::Whois::Availability::Rule

#name

Instance Method Details

#call(context) ⇒ Object 



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# File 'lib/monovm/whois/availability/rules/status_field.rb', line 23

def call(context)
  return nil if context.empty?

  # An error or restriction notice can contain a status line while still
  # describing something that exists.
  return nil if context.match?(Patterns::ERROR_OR_RESTRICTION, source: :significant)

  matched = context.find(Patterns::STATUS_AVAILABLE, source: :significant)
  return nil if matched.nil?

  available(
    reason: "an explicit status field reports the name as available",
    evidence: matched
  )
end