Class: IRCd::IRCServer

Inherits:
WEBrick::GenericServer
  • Object
show all
Includes:
Command, Reply, Utils, MonitorMixin
Defined in:
lib/rupircd/server.rb

Constant Summary

Constants included from Command

Command::Commands

Constants included from Reply

Reply::Replies

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Utils

#channame?, #correct_nick?, #mask_to_regex

Constructor Details

#initialize(fconf, *args) ⇒ IRCServer

Returns a new instance of IRCServer.



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# File 'lib/rupircd/server.rb', line 47

def initialize(fconf, *args)
  @_init_args = [fconf, *args]
  @fconf = fconf
  super(fconf.load, *args)
  @used = Hash.new{|h, k| h[k.upcase] = [0,0,0]}
  init
end

Class Method Details

.define_oper_command(mtd, &pr) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 35

def define_oper_command(mtd, &pr)
  define_method(mtd){|usr, param|
    if usr.operator || usr.local_operator
      instance_exec(usr, param, &pr)
    else
      send_server_message(usr, "481", "Permission Denied - You're not an IRC operator")
    end
  }
end

Instance Method Details

#channel(chname) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 740

def channel(chname)
  @channels[chname.downcase]
end

#class_for_chname(chname) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 283

def class_for_chname(chname)
  # overridden in sub-classes
end

#handle_reply(user, rpl) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 692

def handle_reply(user, rpl)
  return unless rpl
  case rpl[0]
  when Array
    rpl.each{|rp|
      handle_reply(user, rp)
    }
  when Command
    send_client_message(user, user, *rpl)
  else
    send_server_message(user, *rpl)
  end
end

#init ⇒ Object 



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# File 'lib/rupircd/server.rb', line 55

def init
  @operators = []
  @channels = {}
  @users = []
  @users.extend(MonitorMixin)
  @ping_threads = {}
  @ping_threads.extend(MonitorMixin)
  @old_nicks = Hash.new{|h, k| h[k] = []}
  config.replace(@fconf.load)
  cf = {}
  config.fetch(:Opers,{}).each{|nick, pass|
    cf[mask_to_regex(nick)] = pass
  }
  config[:Opers] = cf
  config[:ServerName] = "127.0.0.1"
end

#on_away(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 482

def on_away(user, params)
  if params.empty? || params[0].empty?
    user.away = ""
    send_server_message(user, "305", "You are no longer marked as being away")
  else
    user.away = params.shift
    send_server_message(user, "306", "You have been marked as being away")
  end
end

#on_info(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 342

def on_info(user, params)
  config[:Info].each_line{|line|
    line.chomp!
    send_server_message(user, "371", line)
  }
  send_server_message(user, "374", "End of INFO list")
end

#on_invite(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 363

def on_invite(user, params)
  if params.size < 2
    raise NotEnoughParameter
  else
    who, to = params
    if target = @users.find{|v| v.nick == who}
      if target.away?
        msg = target.away
        send_server_message(user, "301", who, msg)
        return
      end
      if ch = channel(to)
        handle_reply(user, ch.invite(user, target))
      else
        send_server_message(user, "401", who, "No such nick/channel")
      end
    else
      send_server_message(user, "401", who, "No such nick/channel")
    end
  end
end

#on_ison(user, params) ⇒ Object

Raises:



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# File 'lib/rupircd/server.rb', line 664

def on_ison(user, params)
  raise NotEnoughParameter if params.empty?
  a = params.find_all{|nick| @users.any?{|us| us.nick == nick}}
  send_server_message(user, "303", a.join(" "))
end

#on_join(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 287

def on_join(user, params)
  if params[0] == "0"
    user.joined_channels.each{|ch|
      channel(ch).part(user, "")
    }
    user.joined_channels = []
  else
    chs = params[0].split(",")
    keys = params[1].split(",") if params.size >= 2
    keys ||= []
    chs.each_with_index{|ch, i|
      chclass = case ch
      when /^\+/
        NoModeChannel
      when /^#/
        Channel
      when /^!#/
        SafeChannel
      else
        if klass = class_for_chname(ch)
          klass
        else
          send_server_message(user, "403", ch, "No such channel")
          next
        end
      end
      unless @channels.has_key?(ch.downcase)
        set_channel(ch, chclass.new(self, user, ch) )
        handle_reply(user, channel(ch).join(user, keys[i]))
      else
        rpl = channel(ch).join(user, keys[i])
        handle_reply(user, rpl)
      end
    }
  end
end

#on_kick(user, params) ⇒ Object

Raises:



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# File 'lib/rupircd/server.rb', line 632

def on_kick(user, params)
  raise NotEnoughParameter if params.size < 2
  chs = params[0].split(",")
  whos = params[1].split(",")
  msg = params[2].to_s
  if chs.size == 1
    if ch = channel(chs[0])
      whos.each{|who|
        if usr = @users.find{|us|us.nick==who}
          handle_reply user, ch.kick(usr, user, msg)
        else
          send_server_message(user, "401", who, "No such nick/channel")
        end
      }
    else
      send_server_message(user, "403", chs[0], "No such channel")
    end
  elsif chs.size == whos.size
    chs.each_with_index{|chn, i|
      if chn = channel(chn)
        if usr = user_from_nick[whos[i]]
          handle_reply user, ch.kick(usr, user, msg)
        else
          send_server_message(user, "401", whos[i], "No such nick/channel")
        end
      else
        send_server_message(user, "403", chn, "No such channel")
      end
    }
  end
end

#on_links(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 350

def on_links(user, params)
  send_server_message(user, "365")
end

#on_list(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 385

def on_list(user, params)
  if params.empty?
    chs = @channels.find_all{|k, v| v.visible?(nil)}
    chs.each{|k, v|
      case (tpc = v.get_topic(user, true))[0]
      when "331"
        tpc = ""
      else
        tpc = tpc[-1]
      end
      send_server_message(user, "322", k, v.members.size.to_s, tpc)
    }
  else
    chs = params[0].split(",").find_all{|name| channel(name) && channel(n).visible?(user)}
    chs.each{|k|
      v = channel(k)
      uss = v.members.find_all{|m| !m.invisible}
      case (tpc = v.get_topic(user, true))[0]
      when "331"
        tpc = ""
      else
        tpc = tpc[-1]
      end
      send_server_message(user, "322", k, v.members.size.to_s, tpc)
    }
  end
  send_server_message(user, "323", "End of LIST")
end

#on_lusers(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 197

def on_lusers(user, params)
  send_server_message(user, "251", "There are #{@users.size} users and 0 services on 1 servers")
  unless @operators.empty?
    send_server_message(user, "252", @operators.size, "operator(s) online")
  end
  unless @channels.empty?
    send_server_message(user, "254", @channels.size, "channels formed")
  end
  send_server_message(user, "255", "I have #{@users.size} clients and 0 servers")
end

#on_mode(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 492

def on_mode(user, params)
  if params.size < 1
    raise NotEnoughParameter
    return
  end
  to = params.shift
  if ch = channel(to)
    handle_reply(user, ch.handle_mode(user, params))
  elsif who = @users.find{|v| v.nick == to}
    if who == user
      if params.empty?
        send_server_message(user, "221", who.get_mode_flags)
      else
        rls = who.set_flags(params[0])
        send_client_message(user, user, MODE, user.nick, rls.join(" "))
      end
    else
      send_server_message(user, "502", "Cannot change mode for other users")
    end
  else
    send_server_message(user, "401", to, "No such nick/channel")
  end
end

#on_motd(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 184

def on_motd(user, params)
  print_motd(user)
end

#on_names(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 452

def on_names(user, params)
  if params.size < 1
    raise NotEnoughParameter
  else
    chs = params[0].split(",")
    chs.each{|ch|
      handle_reply(user, channel(ch).names(user))
    }
  end
end

#on_nick(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 516

def on_nick(user, params)
  if params.empty?
    send_server_message(user, "431", "No nickname given")
  else
    nick = params[0]
    if nick == "0"
      nick = user.identifier.to_s
    elsif !correct_nick?(nick)
      send_server_message(user, "432", nick, "Erroneous nickname")
      return
    end
    if us = user_from_nick(nick)
      return if us == user
      send_server_message(user, "433", nick, "Nickname is already in use")
    elsif user.restriction
      send_server_message(user, "484", "Your connection is restricted!")
    else
      send_client_message(user, user, NICK, nick)
      sent = []
      user.joined_channels.each{|ch|
        ch.members.each{|mem|
          if !sent.include?(mem) && mem != user
            sent << mem
            send_client_message(mem, user, NICK, nick)
          end
        }
      }
      @old_nicks[nick].unshift user.to_a
      user.nick = nick
    end
  end
end

#on_notice(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 463

def on_notice(user, params)
  if params.size < 2
    raise NotEnoughParameter
    return
  end
  to, msg = params
  if ch = channel(to)
    if msg.empty?
      send_server_message(user, "412", "No text to send")
    else
      handle_reply(user, ch.notice(user, msg))
    end
  elsif who = @users.find{|v| v.nick == to}
    send_client_message(who, user, NOTICE, user.nick, msg)
  else
    send_server_message(user, "401", to, "No such nick/channel")
  end
end

#on_oper(user, params) ⇒ Object

Raises:



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# File 'lib/rupircd/server.rb', line 208

def on_oper(user, params)
  raise NotEnoughParameter if params.size < 2
  nick, pass = params
  unless opdic = config.fetch(:Opers,{}).find{|k, v| k =~ nick}
    send_server_message(user, "491", "No O-lines for your host")
    return
  end
  if Digest::MD5.hexdigest(pass) == opdic[1]
    user.operator = true
    user.local_operator = true
    @operators.push user
    send_server_message(user, "381", "You are now an IRC operator")
  else
    send_server_message(user, "464", "Password incorrect")
  end
end

#on_part(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 324

def on_part(user, params)
  ch, msg = params
  msg ||= ""
  chs = ch.split(",")
  chs.each{|chname|
    ch = channel(chname)
    ch.part(user, msg)
    if ch.members.empty?
      @channels.delete(chname.downcase)
    end
    user.joined_channels.delete(ch)
  }
end

#on_pass(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 553

def on_pass(user, params)
  puts_socket(user, ERR_ALREADYREGISTRED.new(config[:ServerName], "462", [user.nick, "Unauthorized command (already registered)"]))
end

#on_ping(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 338

def on_ping(user, params)
  send_client_message(user, config[:ServerName], PONG, config[:ServerName], *params)
end

#on_pong(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 358

def on_pong(user, params)
  @ping_threads[user].kill
  start_ping(user)
end

#on_privmsg(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 429

def on_privmsg(user, params)
  if params.size < 2
    raise NotEnoughParameter
  end
  to, msg = params
  if ch = channel(to)
    if msg.empty?
      send_server_message(user, "412", "No text to send")
    else
      handle_reply(user, ch.privmsg(user, msg))
    end
  elsif who = @users.find{|v| v.nick == to}
    if who.away?
      away = who.away
      send_server_message(user, "301", to, away)
    else
      send_client_message(who, user, PRIVMSG, who.nick, msg)
    end
  else
    send_server_message(user, "401", to, "No such nick/channel")
  end
end

#on_quit(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 687

def on_quit(user, params)
  send_client_message(user, nil, ERROR, "Closing", "Link:", "#{user.nick}[#{user.user}@#{user.host}]", %Q!("#{params[0]}")!)
  unregister(user, params[0])
end

#on_stats(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 255

def on_stats(user, params)
  if params.empty?
    raise NotEnoughParameter
    return
  end
  c = params[0][0]
  case c
  when ?l
    
  when ?m
    @used.each_pair{|cmd, val|
      send_server_message(user, "212", cmd, val[0])
    }
  when ?o
    
  when ?u
    vs = Time.now.to_i - @started.to_i
    days = vs / (3600*24)
    vs -= days * 3600 * 24
    hours = vs / 3600
    vs -= hours * 3600
    minutes = vs/60
    vs -= minutes * 60
    send_server_message(user, "242", format("Server Up %d days %d:%02d:%02d",days,hours,minutes,vs))
  end
  send_server_message(user, "219", c.chr, "End of STATS report")
end

#on_time(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 354

def on_time(user, params)
  send_server_message(user, "391", config[:ServerName], Time.now.to_s)
end

#on_topic(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 414

def on_topic(user, params)
  chn, topic = params
  unless ch = channel(chn)
    send_server_message(user, "403", chn, "No such channel")
    return
  end
  if params.size < 1
    raise NotEnoughParameter
  elsif params.size == 1
    send_server_message(user, *ch.get_topic(user))
  else
    handle_reply(user, ch.set_topic(user, topic))
  end
end

#on_user(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 549

def on_user(user, params)
  puts_socket(user, ERR_ALREADYREGISTRED.new(config[:ServerName], "462", [user.nick, "Unauthorized command (already registered)"]))
end

#on_userhost(user, params) ⇒ Object

Raises:



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# File 'lib/rupircd/server.rb', line 670

def on_userhost(user, params)
  raise NotEnoughParameter if params.empty?
  targs = params[0..4]
  targs.map!{|nick|
    if tg = @users.find{|u| u.nick == nick}
      suf = @operators.include?(tg.socket) ? "*" : ""
      pre = tg.away? ? "-" : "+"
      usr = tg.user
      host = tg.host
      nick + suf + "=" + pre + usr + "@" + host + " "
    else
      ""
    end
  }
  send_server_message(user, "302", targs.join(" "))
end

#on_version(user, params) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 251

def on_version(user, params)
  send_server_message(user, "351", "rupircd-#{VERSION} #{config[:ServerName]} :Ruby Pseudo IRCD 0.1b")
end

#on_who(user, params) ⇒ Object

Raises:



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# File 'lib/rupircd/server.rb', line 609

def on_who(user, params)
  raise NotEnoughParameter if params.empty?
  mask = mask_to_regex(params[0])
  chs = @channels.find_all{|name, ch| name =~ mask && ch.visible?(user)}
  unless chs.empty?
    chs.each{|name, ch|
      ch.members.each{|usr|
        sym = usr.away? ? "G" : "H"
        sym += @operators.include?(usr) ? "*" : ""
        sym += ch.mode.op?(usr) ? "@" : (ch.mode.voiced?(usr) ? "+" : "")
        send_server_message(user, "352", usr.name, usr.user, usr.host, config[:ServerName], usr.nick, sym, "0 #{real}")
      }
      send_server_message(user, "315", name, "End of WHO list")
    }
  else
    usrs = @users.find_all{|us| us.nick =~ mask || us.user =~ mask || us.host =~ mask}
    usrs.each{|usr|
      send_server_message(user, "352", "*", usr.user, usr.host, config[:ServerName], usr.nick, "H", "0 #{usr.real}")
      send_server_message(user, "315", usr.nick, "End of WHO list")
    }
  end
end

#on_whois(user, params) ⇒ Object

Raises:



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# File 'lib/rupircd/server.rb', line 557

def on_whois(user, params)
  raise NotEnoughParameter if params.empty?
  params[0].split(",").each{|mask|
    reg = mask_to_regex(mask)
    matched = @users.find_all{|usr| usr.nick =~ reg}
    if matched.empty?
      send_server_message(user, "401", mask, "No such nick/channel")
    else
      matched.each{|target|
        sc = target.socket
        send_server_message(user, "311", target.nick, target.user, target.host, "*", target.real)
        send_server_message(user, "312", target.nick, config[:ServerName], "this server.")
        send_server_message(user, "313", target.nick, "is an IRC operator") if @operators.include?(target)
        chs = []
        target.joined_channels.each{|ch|
          if ch.visible?(user)
            pr = ""
            if ch.mode.op?(target)
              pr = "@"
            else ch.mode.voiced?(target)
              pr = "+"
            end
            chs << pr+ch.name
          end
        }
        send_server_message(user, "319", target.nick, chs.join(" "))
        if target.away?
          away = target.away
          send_server_message(user, "301", target.nick, away)
        end
        send_server_message(user, "318", target.nick, "End of WHOIS list")
      }
    end
  }
end

#on_whowas(user, params) ⇒ Object

Raises:



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# File 'lib/rupircd/server.rb', line 593

def on_whowas(user, params)
  raise NotEnoughParameter if params.empty?
  params[0].split(",").each{|nick|
    if @users.any?{|us| us.nick == nick}
      send_server_message(user, "312", nick, config[:ServerName], "this server.")
    elsif @old_nicks[nick].empty?
      send_server_message(user, "406", nick, "There was no such nickname")
    else
      @old_nicks[nick].each{|nms|
        send_server_message(user, "314", *nms)
      }
    end
    send_server_message(user, "369", nick, "End of WHOWAS")
  }
end

#print_motd(user) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 188

def print_motd(user)
  send_server_message(user, "375", "- #{config[:ServerName]} Message of the day - ")
  config[:Motd].each_line{|line|
    line.chomp!
    send_server_message(user, "372", "- " + line)
  }
  send_server_message(user, "376", "End of MOTD command")
end

#puts_socket(user, *args) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 715

def puts_socket(user, *args)
  user.socket.synchronize do
    if user.socket.closed?
      unregister(user, "Connection reset by peer")
    else
      begin
        args.map!{|a| a.to_s.encode config().fetch(:Encoding, "ISO-2022-JP")}
        user.socket.puts(*args)
      rescue Errno::EPIPE => e
        unregister(user, "Connection reset by peer")
      end
    end
  end
end

#recv_message(user, line) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 162

def recv_message(user, line)
  line.chomp!
  return if line.empty?
  begin
    msg = Message.parse(line)
    params = msg.params
    @used[msg.command.upcase][0] += 1
    mtd = "on_" + msg.command.downcase
    if respond_to?(mtd)
      __send__(mtd, user, params)
    else
      raise UnknownCommand.new(msg.command)
    end
  rescue NotEnoughParameter => e
    send_server_message(user, "461", msg.command, "Not enough parameters")
  rescue UnknownCommand => e
    send_server_message(user, "421", e.cmd, "Unknown command")
  rescue
    puts $!, $@
  end
end

#run(socket) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 85

def run(socket)
  socket.extend(MonitorMixin)
  user = nil
  nick = nil
  pass = nil
  begin
    first = true
    while line = socket.gets
      line.chomp!
      next if line.empty?
      case msg = Message.parse(line)
      when PASS
        if first
          pass = msg.params[-1]
          first = false
        else
        end
      when USER
        user = msg.params
        if msg.params.size < 4
          socket.puts err_needmoreparams(msg.command, "Not enough parameters")
          user = nil
        end
      when NICK
        nick = msg.params[0]
        if us = @users.find{|us| us.nick == nick}
          socket.puts ERR_NICKNAMEINUSE.new(config[:ServerName], "433", [nick, "Nickname is already in use"])
          nick = nil
        else
        end
      end
      break if nick && user
    end
  end
  return unless nick && user
  start_ping(user)
  begin
    host = Resolv.getname(socket.addr[-1])
  rescue
    host = socket.addr[-1]
  end
  user = User.new(nick, "~"+user[0].split("@")[0], host, user[-1], socket, user[1])
  @old_nicks[nick].unshift user.to_a
  @users << user
  send_server_message(user, "001", "Welcome to the Internet Relay Network #{user}")
  send_server_message(user, "002", "Your host is #{config[:ServerName]}, running version 0.1b")
  send_server_message(user, "003", "This server was created #{Time.now}")
  send_server_message(user, "004", "#{config[:ServerName]} 0.1b aiwroOs oavimnqsrtklObeI")
  print_motd(user)
  while !socket.closed? && line = socket.gets
    recv_message(user, line)
  end
  unregister(user)
end

#send_client_message(to, from, cmd, *args) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 730

def send_client_message(to, from, cmd, *args)
  msg = cmd.new(from.to_s, cmd.name.split('::').last, args)
  puts_socket(to, msg)
end

#send_message(to, from, msg, *args) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 706

def send_message(to, from, msg, *args)
  case msg
  when Command
    send_client_message(to, from, msg, *args)
  when Reply
    send_server_message(to, msg, *args)
  end
end

#send_server_message(to, msg, *args) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 735

def send_server_message(to, msg, *args)
  args.unshift to.nick
  puts_socket(to, Message.build(config[:ServerName], msg, args) )
end

#set_channel(cn, val) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 744

def set_channel(cn, val)
  @channels[cn.downcase] = val
end

#start(*args) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 748

def start(*args)
  @started = Time.now
  super
end

#start_ping(user) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 76

def start_ping(user)
  @ping_threads[user] = Thread.new{
    sleep(config[:PINGInterval])
    send_client_message(user, nil, PING, config[:ServerName])
    sleep(config[:PINGLimit])
    unregister(user, "PING Timeout")
  }
end

#unregister(user, msg = "EOF From client") ⇒ Object 



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# File 'lib/rupircd/server.rb', line 140

def unregister(user, msg="EOF From client")
  synchronize do
    socket = user.socket
    @ping_threads[user].kill if @ping_threads.has_key?(socket)
    sent = []
    if @users.include?(user)
      user.joined_channels.each{|ch|
        ch.unregister(user)
        ch.members.each{|mem|
          unless sent.include?(mem)
              sent << mem
              send_client_message(mem, user, QUIT, msg)
          end
        }
        @channels.reject!{|k,v|v==ch} if ch.members.empty?
      }
      @users.delete(user)
    end
  end
  user.socket.close unless user.socket.closed?
end

#user_from_nick(nick) ⇒ Object 



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# File 'lib/rupircd/server.rb', line 72

def user_from_nick(nick)
  u = @users.find{|u| u.nick == nick}
end