class Minbox::Server

Constants

SUBJECT

Attributes

host[R]
key[R]
logger[R]
server[R]

Public Class Methods

new(host: 'localhost', port: 25, tls: false, logger: Minbox.logger, thread_pool: Concurrent::CachedThreadPool.new) click to toggle source
# File lib/minbox/server.rb, line 8
def initialize(host: 'localhost', port: 25, tls: false, logger: Minbox.logger, thread_pool: Concurrent::CachedThreadPool.new)
  @host = host
  @logger = logger
  @tls = tls
  @key = OpenSSL::PKey::RSA.new(2048)
  logger.debug("Starting server on port #{port}...")
  @server = TCPServer.new(port.to_i)
  @thread_pool = thread_pool
end

Public Instance Methods

handle(socket, &block) click to toggle source
# File lib/minbox/server.rb, line 33
def handle(socket, &block)
  @thread_pool.post do
    logger.debug("client connected: #{socket.inspect}")
    Client.new(self, socket, logger).handle(&block)
  end
end
listen!(&block) click to toggle source
# File lib/minbox/server.rb, line 22
def listen!(&block)
  @server = upgrade(@server) if tls?
  logger.debug('Server started!')

  loop do
    handle(server.accept, &block)
  rescue StandardError => error
    logger.error(error)
  end
end
shutdown!() click to toggle source
# File lib/minbox/server.rb, line 40
def shutdown!
  server&.close
end
ssl_context() click to toggle source
# File lib/minbox/server.rb, line 44
def ssl_context
  @ssl_context ||=
    begin
      ssl_context = OpenSSL::SSL::SSLContext.new
      ssl_context.cert = certificate_for(key)
      ssl_context.key = key
      ssl_context.ssl_version = :TLSv1_2
      ssl_context
    end
end
tls?() click to toggle source
# File lib/minbox/server.rb, line 18
def tls?
  @tls
end

Private Instance Methods

apply_ski_extension_to(certificate) click to toggle source
# File lib/minbox/server.rb, line 76
def apply_ski_extension_to(certificate)
  extensions = OpenSSL::X509::ExtensionFactory.new
  extensions.subject_certificate =
    extensions.issuer_certificate = certificate
  [
    ['subjectKeyIdentifier', 'hash', false],
    ['keyUsage', 'keyEncipherment,digitalSignature', true],
  ].each do |x|
    certificate.add_extension(extensions.create_extension(x[0], x[1], x[2]))
  end
end
certificate_for(private_key, subject = SUBJECT) click to toggle source
# File lib/minbox/server.rb, line 63
def certificate_for(private_key, subject = SUBJECT)
  certificate = OpenSSL::X509::Certificate.new
  certificate.subject = certificate.issuer = OpenSSL::X509::Name.parse(subject)
  certificate.not_before = Time.now
  certificate.not_after = certificate.not_before + 30 * 24 * 60 * 60 # 30 days
  certificate.public_key = private_key.public_key
  certificate.serial = 1
  certificate.version = 2
  apply_ski_extension_to(certificate)
  certificate.sign(private_key, OpenSSL::Digest::SHA256.new)
  certificate
end
upgrade(tcp_server) click to toggle source
# File lib/minbox/server.rb, line 57
def upgrade(tcp_server)
  server = OpenSSL::SSL::SSLServer.new(tcp_server, ssl_context)
  server.start_immediately = true
  server
end