class Gem::Commands::SourcesCommand

def check_rubygems_https(source_uri) # :nodoc:
  uri = Gem::URI source_uri
  if uri.scheme && uri.scheme.casecmp("http").zero? &&
     uri.host.casecmp("rubygems.org").zero?
    question = <<-QUESTION.chomp
tps://rubygems.org is recommended for security over #{uri}
 you want to add this insecure source?
    QUESTION
    terminate_interaction 1 unless options[:force] || ask_yes_no(question)
  end
end