H2Oを実戦投入するためのいろいろ ref: https://qiita.com/lovesaemi/items/1c72a3c54b3a7f928c7e

file0.txt

        mruby.handler: |
          require "htpasswd.rb"
          Htpasswd.new("/path/to/.htpasswd", "Realm")  

file1.txt

192.168.1.10
127.0.0.1

file2.rb

ALLOW_IPS = %w{
    192.168.1.10
127.0.0.1
}
class Acl
  def call(env)
    if ALLOW_IPS.include? env['REMOTE_ADDR']
      [399, {}, []]
    else
      [403, {'Content-Type' => 'text/plain;charset=utf-8'}, ['Forbidden']]
    end
  rescue => e
    $stderr.puts e
  end
end
Acl.new

file3.txt

     paths:
       "/":
         mruby.handler-file: /path/to/ip.rb
         file.dir: /var/www/html

file4.txt

    paths:
       "/":
         mruby.handler: |
           acl {
              deny { path =~ /\.git+/ }
              deny { path =~ /\.ht+/ }
           }
         file.dir: /var/www/html