Class: MailDiode::Server

Inherits:
GServer
  • Object
show all
Defined in:
lib/server.rb

Constant Summary collapse

DEFAULT_PORT = 
10025
DEFAULT_MAX_CONNECTIONS = 
20
TIMEOUT_SECONDS =

djb recommends 1200

1200

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(engine_factory, settings) ⇒ Server

Returns a new instance of Server.



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# File 'lib/server.rb', line 26

def initialize(engine_factory, settings)
  load_settings(settings)

  @factory = engine_factory
  super(@port, @ip, @max_connections)
end

Instance Attribute Details

#ip ⇒ Object (readonly)

Returns the value of attribute ip.



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# File 'lib/server.rb', line 23

def ip
  @ip
end

#port ⇒ Object (readonly)

Returns the value of attribute port.



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# File 'lib/server.rb', line 24

def port
  @port
end

Instance Method Details

#discard_early_input(client) ⇒ Object 



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# File 'lib/server.rb', line 78

def discard_early_input(client)
  while(client.ready?)
    client.getc
  end
end

#get_line(input, timeout_seconds) ⇒ Object 



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# File 'lib/server.rb', line 71

def get_line(input, timeout_seconds)
  line = nil
  t = Thread.new { line = input.gets(NEWLINE) }
  t.join(timeout_seconds)
  return line
end

#load_settings(settings) ⇒ Object 



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# File 'lib/server.rb', line 88

def load_settings(settings)
    @hostname = settings.get_setting('server', 'hostname')
    @ip = settings.get_setting('server', 'ip')
    @ip.untaint
    @port = settings.get_int('server', 'port', DEFAULT_PORT)
    @port.untaint
    @max_connections = settings.get_int('server', 'maxconnections', DEFAULT_MAX_CONNECTIONS)
end

#response(text) ⇒ Object 



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# File 'lib/server.rb', line 84

def response(text)
  return "#{text}#{NEWLINE}"
end

#serve(client) ⇒ Object 



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# File 'lib/server.rb', line 33

def serve(client)
  begin
    MailDiode::log_debug("Accepting client")
    if(connections > 1)
      MailDiode::log_info("Connections: #{connections}")
    end
    client.binmode
    engine = @factory.create_engine(@hostname)
    family, port, hostname, ip = client.addr
    greeting = engine.start(ip)
    MailDiode::log_debug("Greeting: #{greeting}")
    client << response(greeting)
    while !engine.terminate?
      line = get_line(client, TIMEOUT_SECONDS)
      if(!line)
        MailDiode::log_debug "Client disconnected"
        return
      end
      line.chomp!(NEWLINE)
      result = engine.process_line(line)
      if(result)
        discard_early_input(client)
        client << response(result)
      end
    end
  rescue Errno::ECONNRESET
    MailDiode::log_debug "Client dropped connection"
  rescue Errno::ETIMEDOUT
    MailDiode::log_info "Client input timeout"
  rescue Exception => e
    MailDiode::log_error("Exception #{e.class}: #{e}")
    e.backtrace.each do | line |
      MailDiode::log_error(line)
    end
    client << response("451 Internal Server Error")
  end
end