Class: Cinch::IRC

Inherits:
Object
  • Object
show all
Includes:
Helpers
Defined in:
lib/cinch/irc.rb

Overview

This class manages the connection to the IRC server. That includes processing incoming and outgoing messages, creating Ruby objects and invoking plugins.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpers

#Channel, #Format, #Sanitize, #Target, #Timer, #Unformat, #User, #debug, #error, #exception, #fatal, #incoming, #info, #log, #outgoing, #rescue_exception, sanitize, #warn

Constructor Details

#initialize(bot) ⇒ IRC


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# File 'lib/cinch/irc.rb', line 21

def initialize(bot)
  @bot      = bot
  @isupport = ISupport.new
end

Instance Attribute Details

#botBot (readonly)


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# File 'lib/cinch/irc.rb', line 16

def bot
  @bot
end

#isupportISupport (readonly)


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# File 'lib/cinch/irc.rb', line 13

def isupport
  @isupport
end

#networkNetwork (readonly)


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# File 'lib/cinch/irc.rb', line 19

def network
  @network
end

Instance Method Details

#connectBoolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns True if the connection could be established


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# File 'lib/cinch/irc.rb', line 45

def connect
  tcp_socket = nil

  begin
    Timeout::timeout(@bot.config.timeouts.connect) do
      tcp_socket = TCPSocket.new(@bot.config.server, @bot.config.port, @bot.config.local_host)
    end
  rescue Timeout::Error
    @bot.loggers.warn("Timed out while connecting")
    return false
  rescue SocketError => e
    @bot.loggers.warn("Could not connect to the IRC server. Please check your network: #{e.message}")
    return false
  rescue => e
    @bot.loggers.exception(e)
    return false
  end

  if @bot.config.ssl.use
    setup_ssl(tcp_socket)
  else
    @socket = tcp_socket
  end

  @socket              = Net::BufferedIO.new(@socket)
  @socket.read_timeout = @bot.config.timeouts.read
  @queue               = MessageQueue.new(@socket, @bot)

  return true
end

#parse(input)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.


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# File 'lib/cinch/irc.rb', line 229

def parse(input)
  return if input.chomp.empty?
  @bot.loggers.incoming(input)

  msg          = Message.new(input, @bot)
  events       = [[:catchall]]

  if ["001", "002", "003", "004", "422"].include?(msg.command)
    @registration << msg.command
    if registered?
      events << [:connect]
      @bot.last_connection_was_successful = true
      on_connect(msg, events)
    end
  end

  if ["PRIVMSG", "NOTICE"].include?(msg.command)
    events << [:ctcp] if msg.ctcp?
    if msg.channel?
      events << [:channel]
    else
      events << [:private]
    end

    if msg.command == "PRIVMSG"
      events << [:message]
    end

    if msg.action?
      events << [:action]
    end
  end

  meth = "on_#{msg.command.downcase}"
  __send__(meth, msg, events) if respond_to?(meth, true)

  if msg.error?
    events << [:error]
  end

  events << [msg.command.downcase.to_sym]

  msg.events = events.map(&:first)
  events.each do |event, *args|
    @bot.handlers.dispatch(event, msg, *args)
  end
end

#registered?Boolean


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# File 'lib/cinch/irc.rb', line 278

def registered?
  (("001".."004").to_a - @registration).empty? || @registration.include?("422")
end

#send(msg)

This method returns an undefined value.

Send a message to the server.


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# File 'lib/cinch/irc.rb', line 285

def send(msg)
  @queue.queue(msg)
end

#send_cap_end

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 129

def send_cap_end
  send "CAP END"
end

#send_cap_ls

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 107

def send_cap_ls
  send "CAP LS"
end

#send_cap_req

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 114

def send_cap_req
  caps = [:"away-notify", :"multi-prefix", :sasl, :"twitch.tv/tags"] & @network.capabilities

  # InspIRCd doesn't respond to empty REQs, so send an END in that
  # case.
  if caps.size > 0
    send "CAP REQ :" + caps.join(" ")
  else
    send_cap_end
  end
end

#send_login

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 136

def 
  send "PASS #{@bot.config.password}" if @bot.config.password
  send "NICK #{@bot.generate_next_nick!}"
  send "USER #{@bot.config.user} 0 * :#{@bot.config.realname}"
end

#send_saslObject

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 197

def send_sasl
  if @bot.config.sasl.username && @sasl_current_method = @sasl_remaining_methods.pop
    @bot.loggers.info "[SASL] Trying to authenticate with #{@sasl_current_method.mechanism_name}"
    send "AUTHENTICATE #{@sasl_current_method.mechanism_name}"
  else
    send_cap_end
  end
end

#setup

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 36

def setup
  @registration  = []
  @network       = Network.new(:unknown, :unknown)
  @whois_updates = {}
  @in_lists      = Set.new
end

#setup_ssl(socket)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 79

def setup_ssl(socket)
  # require openssl in this method so the bot doesn't break for
  # people who don't have SSL but don't want to use SSL anyway.
  require 'openssl'

  ssl_context = OpenSSL::SSL::SSLContext.new

  if @bot.config.ssl.is_a?(Configuration::SSL)
    if @bot.config.ssl.client_cert
      ssl_context.cert = OpenSSL::X509::Certificate.new(File.read(@bot.config.ssl.client_cert))
      ssl_context.key  = OpenSSL::PKey::RSA.new(File.read(@bot.config.ssl.client_cert))
    end

    ssl_context.ca_path     = @bot.config.ssl.ca_path
    ssl_context.verify_mode = @bot.config.ssl.verify ? OpenSSL::SSL::VERIFY_PEER : OpenSSL::SSL::VERIFY_NONE
  else
    ssl_context.verify_mode = OpenSSL::SSL::VERIFY_NONE
  end
  @bot.loggers.info "Using SSL with #{@bot.config.server}:#{@bot.config.port}"

  @socket      = OpenSSL::SSL::SSLSocket.new(socket, ssl_context)
  @socket.sync = true
  @socket.connect
end

#socketTCPSocket

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 29

def socket
  @socket.io
end

#start

This method returns an undefined value.

Establish a connection.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 210

def start
  setup
  if connect
    @sasl_remaining_methods = @bot.config.sasl.mechanisms.reverse
    send_cap_ls
    

    reading_thread = start_reading_thread
    sending_thread = start_sending_thread
    ping_thread    = start_ping_thread

    reading_thread.join
    sending_thread.kill
    ping_thread.kill
  end
end

#start_ping_threadThread

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns The ping thread.

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 185

def start_ping_thread
  Thread.new do
    while true
      sleep @bot.config.ping_interval
      # PING requires a single argument. In our case the value
      # doesn't matter though.
      send("PING 0")
    end
  end
end

#start_reading_threadThread

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns the reading thread

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 145

def start_reading_thread
  Thread.new do
    begin
      while line = @socket.readline
        rescue_exception do
          line = Cinch::Utilities::Encoding.encode_incoming(line, @bot.config.encoding)
          parse line
        end
      end
    rescue Timeout::Error
      @bot.loggers.warn "Connection timed out."
    rescue EOFError
      @bot.loggers.warn "Lost connection."
    rescue => e
      @bot.loggers.exception(e)
    end

    @socket.close
    @bot.handlers.dispatch(:disconnect)
    # FIXME won't we kill all :disconnect handlers here? prolly
    # not, as they have 10 seconds to finish. that should be
    # plenty of time
    @bot.handlers.stop_all
  end
end

#start_sending_threadThread

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns the sending thread

Since:

  • 2.0.0


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# File 'lib/cinch/irc.rb', line 174

def start_sending_thread
  Thread.new do
    rescue_exception do
      @queue.process!
    end
  end
end