Module: Legitbot::Validators::Domains::ClassMethods

Includes:
Config::Resolver
Defined in:
lib/legitbot/validators/domains.rb

Overview

:nodoc:

Instance Method Summary collapse

Methods included from Config::Resolver

#resolver, #resolver_config

Instance Method Details

#check_domains? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legitbot/validators/domains.rb', line 33

def check_domains?
  instance_variable_defined?(:@valid_domains)
end

#domains(*list, reverse: true) ⇒ Object 



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# File 'lib/legitbot/validators/domains.rb', line 28

def domains(*list, reverse: true)
  @valid_domains = list.flatten.map { |d| Resolv::DNS::Name.create(d) }
  @validate_reverse_record = reverse
end

#find_subdomain_record(domains) ⇒ Object 



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# File 'lib/legitbot/validators/domains.rb', line 57

def find_subdomain_record(domains)
  domains.find do |d|
    @valid_domains.any? { |vd| d.subdomain_of?(vd) }
  end
end

#reverse_domains(ip) ⇒ Object 



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# File 'lib/legitbot/validators/domains.rb', line 51

def reverse_domains(ip)
  resolver.getnames(ip)
rescue Resolv::ResolvError
  nil
end

#reverse_ip(record) ⇒ Object 



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# File 'lib/legitbot/validators/domains.rb', line 63

def reverse_ip(record)
  return nil if record.nil?

  resolver.getaddress(record.to_s).to_s
rescue Resolv::ResolvError
  nil
end

#valid_domain?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legitbot/validators/domains.rb', line 37

def valid_domain?(ip)
  return true unless check_domains?
  return true if @valid_domains.empty?

  domains = reverse_domains(ip)
  return false if domains.empty?

  record = find_subdomain_record(domains)
  return false unless record
  return true unless @validate_reverse_record

  ip == reverse_ip(record)
end