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[shogi-server/shogi-server.git] / shogi-server
index 992c5d8..049c45f 100755 (executable)
@@ -1,7 +1,8 @@
 #! /usr/bin/env ruby
-## -*-Ruby-*- $RCSfile$ $Revision$ $Name$
+## $Id$
 
-## Copyright (C) 2004 nanami@2ch
+## Copyright (C) 2004 NABEYA Kenichi (aka nanami@2ch)
+## Copyright (C) 2007-2008 Daigo Moriwaki (daigo at debian dot org)
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
 ## along with this program; if not, write to the Free Software
 ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-Max_Write_Queue_Size = 1000
-Max_Identifier_Length = 32
-Default_Timeout = 60            # for single socket operation
+TOP_DIR = File.expand_path(File.dirname(__FILE__))
+$:.unshift File.dirname(__FILE__)
+require 'shogi_server'
 
-Default_Game_Name = "default:1500:0"
+#################################################
+# MAIN
+#
 
-One_Time = 10
-Least_Time_Per_Move = 1
-Login_Time = 300                # time for LOGIN
+ShogiServer.reload
 
-Release = "$Name$".split[1].sub(/\A[^\d]*/, '').gsub(/_/, '.')
-Release.concat("-") if (Release == "")
-Revision = "$Revision$".gsub(/[^\.\d]/, '')
-
-STDOUT.sync = true
-STDERR.sync = true
-
-require 'getoptlong'
-require 'thread'
-require 'timeout'
-require 'socket'
-require 'ping'
-
-TCPSocket.do_not_reverse_lookup = true
-
-
-class TCPSocket
-  def gets_timeout(t = Default_Timeout)
-    begin
-      timeout(t) do
-        return self.gets
-      end
-    rescue TimeoutError
-      return nil
-    rescue
-      return nil
-    end
-  end
-  def gets_safe(t = nil)
-    if (t && t > 0)
-      begin
-        timeout(t) do
-          return self.gets
-        end
-      rescue TimeoutError
-        return :timeout
-      rescue
-        return nil
-      end
-    else
-      begin
-        return self.gets
-      rescue
-        return nil
-      end
-    end
-  end
-  def write_safe(str)
-    begin
-      return self.write(str)
-    rescue
-      return nil
-    end
-  end
-end
-
-
-class League
-  def initialize
-    @games = Hash::new
-    @players = Hash::new
-    @event = nil
-  end
-  attr_accessor :players, :games, :event
-
-  def add(player)
-    @players[player.name] = player
-  end
-  def delete(player)
-    @players.delete(player.name)
-  end
-  def get_player(status, game_name, sente, searcher=nil)
-    @players.each do |name, player|
-      if ((player.status == status) &&
-          (player.game_name == game_name) &&
-          ((player.sente == nil) || (player.sente == sente)) &&
-          ((searcher == nil) || (player != searcher)))
-        return player
-      end
-    end
-    return nil
-  end
-end
-
-class Player
-  def initialize(str, socket)
-    @name = nil
-    @password = nil
-    @socket = socket
-    @status = "connected"        # game_waiting -> agree_waiting -> start_waiting -> game -> finished
-
-    @protocol = nil             # CSA or x1
-    @eol = "\m"                 # favorite eol code
-    @game = nil
-    @game_name = ""
-    @mytime = 0                 # set in start method also
-    @sente = nil
-    @writer_thread = nil
-    @main_thread = nil
-    @write_queue = Queue::new
-    login(str)
-  end
-
-  attr_accessor :name, :password, :socket, :status
-  attr_accessor :protocol, :eol, :game, :mytime, :game_name, :sente
-  attr_accessor :main_thread, :writer_thread, :write_queue
-  def kill
-    finish
-    Thread::kill(@main_thread) if @main_thread
-  end
-
-  def finish
-    if (@status != "finished")
-      @status = "finished"
-      log_message(sprintf("user %s finish", @name))    
-      Thread::kill(@writer_thread) if @writer_thread
-      begin
-        @socket.close if (! @socket.closed?)
-      rescue
-        log_message(sprintf("user %s finish failed", @name))    
-      end
-    end
-  end
-
-  def write_safe(str)
-    @write_queue.push(str.gsub(/[\r\n]+/, @eol))
-  end
-
-  def writer
-    while (str = @write_queue.pop)
-      @socket.write_safe(str)
-    end
-  end
-
-  def to_s
-    if ((status == "game_waiting") ||
-        (status == "agree_waiting") ||
-        (status == "game"))
-      if (@sente)
-        return sprintf("%s %s %s %s +", @name, @protocol, @status, @game_name)
-      elsif (@sente == false)
-        return sprintf("%s %s %s %s -", @name, @protocol, @status, @game_name)
-      elsif (@sente == nil)
-        return sprintf("%s %s %s %s +-", @name, @protocol, @status, @game_name)
-      end
-    else
-      return sprintf("%s %s %s", @name, @protocol, @status)
-    end
-  end
-
-  def write_help
-    @socket.write_safe('##[HELP] available commands "%%WHO", "%%CHAT str", "%%GAME game_name +", "%%GAME game_name -"')
-  end
-
-  def login(str)
-    str =~ /([\r\n]*)$/
-    @eol = $1
-    str.chomp!
-    (login, @name, @password, ext) = str.split
-    if (ext)
-      @protocol = "x1"
-    else
-      @protocol = "CSA"
-    end
-    @main_thread = Thread::current
-    @writer_thread = Thread::start do
-      writer()
-    end
-  end
-    
-  def run
-    write_safe(sprintf("LOGIN:%s OK\n", @name))
-    if (@protocol != "CSA")
-      log_message(sprintf("user %s run in %s mode", @name, @protocol))
-      write_safe(sprintf("##[LOGIN] +OK %s\n", @protocol))
-    else
-      log_message(sprintf("user %s run in CSA mode", @name))
-      csa_1st_str = "%%GAME #{Default_Game_Name} +-"
-    end
-    
-    while (csa_1st_str || (str = @socket.gets_safe(Default_Timeout)))
-      begin
-        $mutex.lock
-        if (csa_1st_str)
-          str = csa_1st_str
-          csa_1st_str = nil
-        end
-        if (@write_queue.size > Max_Write_Queue_Size)
-          log_warning(sprintf("write_queue of %s is %d", @name, @write_queue.size))
-         return
-        end
-
-        if (@status == "finished")
-          return
-        end
-        str.chomp! if (str.class == String)
-        case str
-        when /^[\+\-%][^%]/, :timeout
-          if (@status == "game")
-            s = @game.handle_one_move(str, self)
-            return if (s && @protocol == "CSA")
-          end
-        when /^REJECT/
-          if (@status == "agree_waiting")
-            @game.reject(@name)
-            return if (@protocol == "CSA")
-          else
-            write_safe(sprintf("##[ERROR] you are in %s status. AGREE is valid in agree_waiting status\n", @status))
-          end
-        when /^AGREE/
-          if (@status == "agree_waiting")
-            @status = "start_waiting"
-            if ((@game.sente.status == "start_waiting") &&
-                (@game.gote.status == "start_waiting"))
-              @game.start
-              @game.sente.status = "game"
-              @game.gote.status = "game"
-            end
-          else
-            write_safe(sprintf("##[ERROR] you are in %s status. AGREE is valid in agree_waiting status\n", @status))
-          end
-        when /^%%SHOW\s+(\S+)/
-          game_id = $1
-          if (LEAGUE.games[game_id])
-            write_safe(LEAGUE.games[game_id].show.gsub(/^/, '##[SHOW] '))
-          end
-          write_safe("##[SHOW] +OK\n")
-        when /^%%MONITORON\s+(\S+)/
-          game_id = $1
-          if (LEAGUE.games[game_id])
-            LEAGUE.games[game_id].monitoron(self)
-            write_safe(LEAGUE.games[game_id].show.gsub(/^/, "##[MONITOR][#{game_id}] "))
-            write_safe("##[MONITOR][#{game_id}] +OK\n")
-          end
-        when /^%%MONITOROFF\s+(\S+)/
-          game_id = $1
-          if (LEAGUE.games[game_id])
-            LEAGUE.games[game_id].monitoroff(self)
-          end
-        when /^%%HELP/
-          write_help
-        when /^%%GAME\s+(\S+)\s+([\+\-]+)$/
-          game_name = $1
-          sente_str = $2
-          if (! good_game_name?(game_name))
-            write_safe(sprintf("##[ERROR] bad game name\n"))
-          elsif ((@status == "connected") || (@status == "game_waiting"))
-            @status = "game_waiting"
-          else
-            write_safe(sprintf("##[ERROR] you are in %s status. GAME is valid in connected or game_waiting status\n", @status))
-          end
-          @status = "game_waiting"
-          @game_name = $1
-          if (sente_str == "+")
-            @sente = true
-            rival_sente = false
-          elsif (sente_str == "-")
-            @sente = false
-            rival_sente = true
-          else
-            @sente = nil
-            rival_sente = nil
-          end
-          rival = LEAGUE.get_player("game_waiting", @game_name, rival_sente, self)
-          rival = LEAGUE.get_player("game_waiting", @game_name, nil, self) if (! rival)
-          if (rival)
-            if (@sente == nil)
-              if (rand(2) == 0)
-                @sente = true
-                rival_sente = false
-              else
-                @sente = false
-                rival_sente = true
-              end
-            elsif (rival_sente == nil)
-              if (@sente)
-                rival_sente = false
-              else
-                rival_sente = true
-              end
-            end
-            rival.sente = rival_sente
-            Game::new(@game_name, self, rival)
-            self.status = "agree_waiting"
-            rival.status = "agree_waiting"
-          end
-        when /^%%CHAT\s+(.+)/
-          message = $1
-          LEAGUE.players.each do |name, player|
-            if (player.protocol != "CSA")
-              s = player.write_safe(sprintf("##[CHAT][%s] %s\n", @name, message)) 
-              player.status = "zombie" if (! s)
-            end
-          end
-        when /^%%LIST/
-          buf = Array::new
-          LEAGUE.games.each do |id, game|
-            buf.push(sprintf("##[LIST] %s\n", id))
-          end
-          buf.push("##[LIST] +OK\n")
-          write_safe(buf.join)
-        when /^%%WHO/
-          buf = Array::new
-          LEAGUE.players.each do |name, player|
-            buf.push(sprintf("##[WHO] %s\n", player.to_s))
-          end
-          buf.push("##[WHO] +OK\n")
-          write_safe(buf.join)
-        when /^LOGOUT/
-          @status = "connected"
-          write_safe("LOGOUT:completed\n")
-          return
-        when /^\s*$/
-          ## ignore null string
-        else
-          write_safe(sprintf("##[ERROR] unknown command %s\n", str))
-        end
-      ensure
-        $mutex.unlock
-      end
-    end                         # enf of while
-  end
-end
-
-class Piece
-  PROMOTE = {"FU" => "TO", "KY" => "NY", "KE" => "NK", "GI" => "NG", "KA" => "UM", "HI" => "RY"}
-  def initialize(name, sente)
-    @name = name
-    @sente = sente
-    @promoted = false
-  end
-  attr_accessor :name, :promoted, :sente
-
-  def promoted_name
-    PROMOTE[name]
-  end
-
-  def to_s
-    if (@sente)
-      sg = "+"
-    else
-      sg = "-"
-    end
-    if (@promoted)
-      n = PROMOTE[@name]
-    else
-      n = @name
-    end
-    return sg + n
-  end
-end
-
-
-
-class Board
-  def initialize
-    @sente_hands = Array::new
-    @gote_hands = Array::new
-    @array = [[], [], [], [], [], [], [], [], [], []]
-  end
-  attr_accessor :array, :sente_hands, :gote_hands
-
-  def initial
-    @array[1][1] = Piece::new("KY", false)
-    @array[2][1] = Piece::new("KE", false)
-    @array[3][1] = Piece::new("GI", false)
-    @array[4][1] = Piece::new("KI", false)
-    @array[5][1] = Piece::new("OU", false)
-    @array[6][1] = Piece::new("KI", false)
-    @array[7][1] = Piece::new("GI", false)
-    @array[8][1] = Piece::new("KE", false)
-    @array[9][1] = Piece::new("KY", false)
-    @array[2][2] = Piece::new("KA", false)
-    @array[8][2] = Piece::new("HI", false)
-    @array[1][3] = Piece::new("FU", false)
-    @array[2][3] = Piece::new("FU", false)
-    @array[3][3] = Piece::new("FU", false)
-    @array[4][3] = Piece::new("FU", false)
-    @array[5][3] = Piece::new("FU", false)
-    @array[6][3] = Piece::new("FU", false)
-    @array[7][3] = Piece::new("FU", false)
-    @array[8][3] = Piece::new("FU", false)
-    @array[9][3] = Piece::new("FU", false)
-
-    @array[1][9] = Piece::new("KY", true)
-    @array[2][9] = Piece::new("KE", true)
-    @array[3][9] = Piece::new("GI", true)
-    @array[4][9] = Piece::new("KI", true)
-    @array[5][9] = Piece::new("OU", true)
-    @array[6][9] = Piece::new("KI", true)
-    @array[7][9] = Piece::new("GI", true)
-    @array[8][9] = Piece::new("KE", true)
-    @array[9][9] = Piece::new("KY", true)
-    @array[2][8] = Piece::new("HI", true)
-    @array[8][8] = Piece::new("KA", true)
-    @array[1][7] = Piece::new("FU", true)
-    @array[2][7] = Piece::new("FU", true)
-    @array[3][7] = Piece::new("FU", true)
-    @array[4][7] = Piece::new("FU", true)
-    @array[5][7] = Piece::new("FU", true)
-    @array[6][7] = Piece::new("FU", true)
-    @array[7][7] = Piece::new("FU", true)
-    @array[8][7] = Piece::new("FU", true)
-    @array[9][7] = Piece::new("FU", true)
-  end
-
-  def get_piece_from_hands(hands, name)
-    p = hands.find { |i|
-      i.name == name
-    }
-    if (p)
-      hands.delete(p)
-    end
-    return p
-  end
-
-  def handle_one_move(str)
-  begin
-    if (str =~ /^([\+\-])(\d)(\d)(\d)(\d)([A-Z]{2})/)
-      p = $1
-      x0 = $2.to_i
-      y0 = $3.to_i
-      x1 = $4.to_i
-      y1 = $5.to_i
-      name = $6
-
-      if ((x1 == 0) || (y1 == 0))
-       return "illegal"
-      end
-    elsif (str =~ /^%KACHI/)
-      return "kachi"
-    elsif (str =~ /^%TORYO/)
-      return "toryo"
-    else
-      return "illegal"
-    end
-
-    if (p == "+")
-      sente = true
-      hands = @sente_hands
-    else
-      sente = false
-      hands = @gote_hands
-    end
-    if (@array[x1][y1])
-      if (@array[x1][y1] == sente) # this is mine
-        return "illegal"
-      elsif (@array[x1][y1].name == "OU")
-        return "outori"
-      end
-      hands.push(@array[x1][y1])
-      @array[x1][y1] = nil
-    end
-    if ((x0 == 0) && (y0 == 0))
-      p = get_piece_from_hands(hands, name)
-      return "illegal" if (! p)     # i don't have this one
-      @array[x1][y1] = p
-      p.sente = sente
-      p.promoted = false
-    else
-      if (@array[x0][y0] == nil)
-        return "illegal";
-      end
-      if (@array[x0][y0].name != name) # promoted ?
-        return "illegal" if (@array[x0][y0].promoted_name != name) # can't promote
-        @array[x0][y0].promoted = true
-      end
-      @array[x1][y1] = @array[x0][y0]
-      @array[x0][y0] = nil
-    end
-    return "normal"             # legal move
-  rescue
-    return "illegal"
-  end
-  end
-
-  def to_s
-    a = Array::new
-    y = 1
-    while (y <= 9)
-      a.push(sprintf("P%d", y))
-      x = 9
-      while (x >= 1)
-        piece = @array[x][y]
-        if (piece)
-          s = piece.to_s
-        else
-          s = " * "
-        end
-        a.push(s)
-        x = x - 1
-      end
-      a.push(sprintf("\n"))
-      y = y + 1
-    end
-    if (! sente_hands.empty?)
-      a.push("P+")
-      sente_hands.each do |p|
-        a.push("00" + p.name)
-      end
-      a.push("\n")
-    end
-    if (! gote_hands.empty?)
-      a.push("P-")
-      gote_hands.each do |p|
-        a.push("00" + p.name)
-      end
-      a.push("\n")
-    end
-    a.push("+\n")
-    return a.join
-  end
-end
-
-class Game
-  def initialize(game_name, player0, player1)
-    @monitors = Array::new
-    @game_name = game_name
-    if (@game_name =~ /:(\d+):(\d+)/)
-      @total_time = $1.to_i
-      @byoyomi = $2.to_i
-    end
-
-    if (player0.sente)
-      @sente = player0
-      @gote = player1
-    else
-      @sente = player1
-      @gote = player0
-    end
-    @current_player = @sente
-    @next_player = @gote
-
-    @sente.game = self
-    @gote.game = self
-
-    @last_move = ""
-    @current_turn = 0
-
-    @sente.status = "agree_waiting"
-    @gote.status = "agree_waiting"
-    @id = sprintf("%s+%s+%s+%s+%s", 
-                  LEAGUE.event, @game_name, @sente.name, @gote.name,
-                  Time::new.strftime("%Y%m%d%H%M%S"))
-
-    LEAGUE.games[@id] = self
-
-
-    log_message(sprintf("game created %s %s %s", game_name, sente.name, gote.name))
-
-    @logfile = @id + ".csa"
-    @board = Board::new
-    @board.initial
-    @start_time = nil
-    @fh = nil
-
-    propose
-  end
-  attr_accessor :game_name, :total_time, :byoyomi, :sente, :gote, :id, :board, :current_player, :next_player, :fh, :monitors
-  attr_accessor :last_move, :current_turn
-
-  def monitoron(monitor)
-    @monitors.delete(monitor)
-    @monitors.push(monitor)
-  end
-
-  def monitoroff(monitor)
-    @monitors.delete(monitor)
-  end
-
-  def reject(rejector)
-    @sente.write_safe(sprintf("REJECT:%s by %s\n", @id, rejector))
-    @gote.write_safe(sprintf("REJECT:%s by %s\n", @id, rejector))
-    finish
-  end
-
-  def kill(killer)
-    if ((@sente.status == "agree_waiting") || (@sente.status == "start_waiting"))
-      reject(killer.name)
-    elsif (@current_player == killer)
-      abnormal_lose()
-      finish
-    end
-  end
-
-  def finish
-    log_message(sprintf("game finished %s %s %s", game_name, sente.name, gote.name))
-    @fh.printf("'$END_TIME:%s\n", Time::new.strftime("%Y/%m/%d %H:%M:%S"))    
-    @fh.close
-
-    @sente.game = nil
-    @gote.game = nil
-    @sente.status = "connected"
-    @gote.status = "connected"
-
-    if (@current_player.protocol == "CSA")
-      @current_player.finish
-    end
-    if (@next_player.protocol == "CSA")
-      @next_player.finish
-    end
-    @monitors = Array::new
-    @sente = nil
-    @gote = nil
-    @current_player = nil
-    @next_player = nil
-    LEAGUE.games.delete(@id)
-  end
-
-  def handle_one_move(str, player)
-    finish_flag = true
-    if (@current_player == player)
-      @end_time = Time::new
-      t = (@end_time - @start_time).ceil
-      t = Least_Time_Per_Move if (t < Least_Time_Per_Move)
-      
-      move_status = nil
-      if ((@current_player.mytime - t <= 0) && (@total_time > 0))
-        status = :timeout
-      elsif (str == :timeout)
-        return false            # time isn't expired. players aren't swapped. continue game
-      else
-        move_status = @board.handle_one_move(str)
-        if (move_status == "illegal")
-          @fh.printf("'ILLEGAL_MOVE(%s)\n", str)
-        else
-          if ((move_status == "normal") || (move_status == "outori"))
-            @sente.write_safe(sprintf("%s,T%d\n", str, t))
-            @gote.write_safe(sprintf("%s,T%d\n", str, t))
-            @fh.printf("%s\nT%d\n", str, t)
-            @last_move = sprintf("%s,T%d", str, t)
-            @current_turn = @current_turn + 1
-          end
-          @monitors.each do |monitor|
-            monitor.write_safe(show.gsub(/^/, "##[MONITOR][#{@id}] "))
-            monitor.write_safe(sprintf("##[MONITOR][%s] +OK\n", @id))
-          end
-        end
-      end
-
-      if (@current_player.mytime - t < @byoyomi)
-        @current_player.mytime = @byoyomi
-      else
-        @current_player.mytime = @current_player.mytime - t
-      end
-
-      if (@next_player.status != "game") # rival is logout or disconnected
-        abnormal_win()
-      elsif (status == :timeout)
-        timeout_lose()
-      elsif (move_status == "illegal")
-        illegal_lose()
-      elsif (move_status == "kachi")
-        kachi_win()
-      elsif (move_status == "toryo")
-        toryo_lose()
-      elsif (move_status == "outori")
-        outori_win()
-      else
-        finish_flag = false
-      end
-      finish() if finish_flag
-      (@current_player, @next_player) = [@next_player, @current_player]
-      @start_time = Time::new
-      return finish_flag
-    end
-  end
-
-  def abnormal_win
-    @current_player.status = "connected"
-    @next_player.status = "connected"
-    @current_player.write_safe("%TORYO\n#RESIGN\n#WIN\n")
-    @next_player.write_safe("%TORYO\n#RESIGN\n#LOSE\n")
-    @fh.printf("%%TORYO\n")
-    @fh.printf("'summary:abnormal:%s win:%s lose\n", @current_player.name, @next_player.name)
-    @monitors.each do |monitor|
-      monitor.write_safe(sprintf("##[MONITOR][%s] %%TORYO\n", @id))
-    end
-  end
-
-  def abnormal_lose
-    @current_player.status = "connected"
-    @next_player.status = "connected"
-    @current_player.write_safe("%TORYO\n#RESIGN\n#LOSE\n")
-    @next_player.write_safe("%TORYO\n#RESIGN\n#WIN\n")
-    @fh.printf("%%TORYO\n")
-    @fh.printf("'summary:abnormal:%s lose:%s win\n", @current_player.name, @next_player.name)
-    @monitors.each do |monitor|
-      monitor.write_safe(sprintf("##[MONITOR][%s] %%TORYO\n", @id))
-    end
-  end
-
-  def illegal_lose
-    @current_player.status = "connected"
-    @next_player.status = "connected"
-    @current_player.write_safe("#ILLEGAL_MOVE\n#LOSE\n")
-    @next_player.write_safe("#ILLEGAL_MOVE\n#WIN\n")
-    @fh.printf("'summary:illegal move:%s lose:%s win\n", @current_player.name, @next_player.name)
-    @monitors.each do |monitor|
-      monitor.write_safe(sprintf("##[MONITOR][%s] #ILLEGAL_MOVE\n", @id))
-    end
-  end
-
-  def timeout_lose
-    @current_player.status = "connected"
-    @next_player.status = "connected"
-    @current_player.write_safe("#TIME_UP\n#LOSE\n")
-    @next_player.write_safe("#TIME_UP\n#WIN\n")
-    @fh.printf("'summary:time up:%s lose:%s win\n", @current_player.name, @next_player.name)
-    @monitors.each do |monitor|
-      monitor.write_safe(sprintf("##[MONITOR][%s] #TIME_UP\n", @id))
-    end
-  end
-
-  def kachi_win
-    @current_player.status = "connected"
-    @next_player.status = "connected"
-    @current_player.write_safe("%KACHI\n#JISHOGI\n#WIN\n")
-    @next_player.write_safe("%KACHI\n#JISHOGI\n#LOSE\n")
-    @fh.printf("%%KACHI\n")
-    @fh.printf("'summary:kachi:%s win:%s lose\n", @current_player.name, @next_player.name)
-    @monitors.each do |monitor|
-      monitor.write_safe(sprintf("##[MONITOR][%s] %%KACHI\n", @id))
-    end
-  end
-
-  def toryo_lose
-    @current_player.status = "connected"
-    @next_player.status = "connected"
-    @current_player.write_safe("%TORYO\n#RESIGN\n#LOSE\n")
-    @next_player.write_safe("%TORYO\n#RESIGN\n#WIN\n")
-    @fh.printf("%%TORYO\n")
-    @fh.printf("'summary:toryo:%s lose:%s win\n", @current_player.name, @next_player.name)
-    @monitors.each do |monitor|
-      monitor.write_safe(sprintf("##[MONITOR][%s] %%TORYO\n", @id))
-    end
-  end
-
-  def outori_win
-    @current_player.status = "connected"
-    @next_player.status = "connected"
-    @current_player.write_safe("#ILLEGAL_MOVE\n#WIN\n")
-    @next_player.write_safe("#ILLEGAL_MOVE\n#LOSE\n")
-    @fh.printf("'summary:outori:%s win:%s lose\n", @current_player.name, @next_player.name)
-    @monitors.each do |monitor|
-      monitor.write_safe(sprintf("##[MONITOR][%s] #ILLEGAL_MOVE\n", @id))
-    end
-  end
-
-  def start
-    log_message(sprintf("game started %s %s %s", game_name, sente.name, gote.name))
-    @sente.write_safe(sprintf("START:%s\n", @id))
-    @gote.write_safe(sprintf("START:%s\n", @id))
-    @sente.mytime = @total_time
-    @gote.mytime = @total_time
-    @start_time = Time::new
-  end
-
-  def propose
-    begin
-      @fh = open(@logfile, "w")
-      @fh.sync = true
-
-      @fh.printf("V2\n")
-      @fh.printf("N+%s\n", @sente.name)
-      @fh.printf("N-%s\n", @gote.name)
-      @fh.printf("$EVENT:%s\n", @id)
-
-      @sente.write_safe(propose_message("+"))
-      @gote.write_safe(propose_message("-"))
-
-      @fh.printf("$START_TIME:%s\n", Time::new.strftime("%Y/%m/%d %H:%M:%S"))
-      @fh.print <<EOM
-P1-KY-KE-GI-KI-OU-KI-GI-KE-KY
-P2 * -HI *  *  *  *  * -KA *
-P3-FU-FU-FU-FU-FU-FU-FU-FU-FU
-P4 *  *  *  *  *  *  *  *  *
-P5 *  *  *  *  *  *  *  *  *
-P6 *  *  *  *  *  *  *  *  *
-P7+FU+FU+FU+FU+FU+FU+FU+FU+FU
-P8 * +KA *  *  *  *  * +HI *
-P9+KY+KE+GI+KI+OU+KI+GI+KE+KY
-+
-EOM
-    end
-  end
-
-  def show()
-    str0 = <<EOM
-BEGIN Game_Summary
-Protocol_Version:1.0
-Protocol_Mode:Server
-Format:Shogi 1.0
-Game_ID:#{@id}
-Name+:#{@sente.name}
-Name-:#{@gote.name}
-Rematch_On_Draw:NO
-To_Move:+
-BEGIN Time
-Time_Unit:1sec
-Total_Time:#{@total_time}
-Byoyomi:#{@byoyomi}
-Remaining_Time+:#{@sente.mytime}
-Remaining_Time-:#{@gote.mytime}
-Last_Move:#{@last_move}
-Current_Turn:#{@current_turn}
-Least_Time_Per_Move:#{Least_Time_Per_Move}
-END Time
-BEGIN Position
-Jishogi_Declaration:1.1
-EOM
-
-    str1 = <<EOM
-END Position
-END Game_Summary
-EOM
-
-    return str0 + @board.to_s + str1
-  end
-
-  def propose_message(sg_flag)
-    str = <<EOM
-BEGIN Game_Summary
-Protocol_Version:1.0
-Protocol_Mode:Server
-Format:Shogi 1.0
-Game_ID:#{@id}
-Name+:#{@sente.name}
-Name-:#{@gote.name}
-Your_Turn:#{sg_flag}
-Rematch_On_Draw:NO
-To_Move:+
-BEGIN Time
-Time_Unit:1sec
-Total_Time:#{@total_time}
-Byoyomi:#{@byoyomi}
-Least_Time_Per_Move:#{Least_Time_Per_Move}
-END Time
-BEGIN Position
-Jishogi_Declaration:1.1
-P1-KY-KE-GI-KI-OU-KI-GI-KE-KY
-P2 * -HI *  *  *  *  * -KA *
-P3-FU-FU-FU-FU-FU-FU-FU-FU-FU
-P4 *  *  *  *  *  *  *  *  *
-P5 *  *  *  *  *  *  *  *  *
-P6 *  *  *  *  *  *  *  *  *
-P7+FU+FU+FU+FU+FU+FU+FU+FU+FU
-P8 * +KA *  *  *  *  * +HI *
-P9+KY+KE+GI+KI+OU+KI+GI+KE+KY
-P+
-P-
-+
-END Position
-END Game_Summary
-EOM
-    return str
+def gets_safe(socket, timeout=nil)
+  if r = select([socket], nil, nil, timeout)
+    return r[0].first.gets
+  else
+    return :timeout
   end
+rescue Exception => ex
+  log_error("gets_safe: #{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
+  return :exception
 end
 
 def usage
@@ -892,7 +45,7 @@ NAME
        shogi-server - server for CSA server protocol
 
 SYNOPSIS
-       shogi-server event_name port_number
+       shogi-server [OPTIONS] event_name port_number
 
 DESCRIPTION
        server for CSA server protocol
@@ -900,40 +53,56 @@ DESCRIPTION
 OPTIONS
        --pid-file file
                specify filename for logging process ID
+        --daemon dir
+                run as a daemon. Log files will be put in dir.
+        --player-log-dir dir
+                log network messages for each player. Log files
+                will be put in the dir.
+        --floodgate_history
+                file name to record Floodgate game history
+                default: './floodgate_history.yaml'
 
 LICENSE
-       this file is distributed under GPL version2 and might be compiled by Exerb
+       GPL versoin 2 or later
 
 SEE ALSO
 
 RELEASE
-       #{Release}
+       #{ShogiServer::Release}
 
 REVISION
-       #{Revision}
+       #{ShogiServer::Revision}
 EOM
 end
 
+
+def log_debug(str)
+  $logger.debug(str)
+end
+
 def log_message(str)
-  printf("%s message: %s\n", Time::new.to_s, str)
+  $logger.info(str)
+end
+def log_info(str)
+  log_message(str)
 end
 
 def log_warning(str)
-  printf("%s warning: %s\n", Time::new.to_s, str)
+  $logger.warn(str)
 end
 
 def log_error(str)
-  printf("%s error: %s\n", Time::new.to_s, str)
+  $logger.error(str)
 end
 
 
 def parse_command_line
   options = Hash::new
-  parser = GetoptLong.new
-  parser.ordering = GetoptLong::REQUIRE_ORDER
-  parser.set_options(
-                     ["--pid-file", GetoptLong::REQUIRED_ARGUMENT])
-
+  parser = GetoptLong.new(
+    ["--daemon",            GetoptLong::REQUIRED_ARGUMENT],
+    ["--pid-file",          GetoptLong::REQUIRED_ARGUMENT],
+    ["--player-log-dir",    GetoptLong::REQUIRED_ARGUMENT],
+    ["--floodgate-history", GetoptLong::REQUIRED_ARGUMENT])
   parser.quiet = true
   begin
     parser.each_option do |name, arg|
@@ -947,134 +116,228 @@ def parse_command_line
   return options
 end
 
-def good_game_name?(str)
-  if ((str =~ /^(.+):\d+:\d+$/) &&
-      (good_identifier?($1)))
-    return true
-  else
-    return false
+def write_pid_file(file)
+  open(file, "w") do |fh|
+    fh.puts "#{$$}"
   end
 end
 
-def good_identifier?(str)
-  if ((str =~ /\A[\w\d_@\-\.]+\z/) &&
-      (str.length < Max_Identifier_Length))
-    return true
-  else
-    return false
+def mutex_watchdog(mutex, sec)
+  sec = 1 if sec < 1
+  queue = []
+  while true
+    if mutex.try_lock
+      queue.clear
+      mutex.unlock
+    else
+      queue.push(Object.new)
+      if queue.size > sec
+        # timeout
+        log_error("mutex watchdog timeout: %d sec" % [sec])
+        queue.clear
+      end
+    end
+    sleep(1)
   end
 end
 
-def good_login?(str)
-  tokens = str.split
-  if (((tokens.length == 3) || ((tokens.length == 4) && tokens[3] == "x1")) &&
-      (tokens[0] == "LOGIN") &&
-      (good_identifier?(tokens[1])))
-    return true
-  else
-    return false
-  end
+def login_loop(client)
+  player = login = nil
+  while r = select([client], nil, nil, ShogiServer::Login_Time) do
+    break unless str = r[0].first.gets
+    $mutex.lock # guards LEAGUE
+    begin
+      str =~ /([\r\n]*)$/
+      eol = $1
+      if (ShogiServer::Login::good_login?(str))
+        player = ShogiServer::Player::new(str, client, eol)
+        login  = ShogiServer::Login::factory(str, player)
+        if (current_player = LEAGUE.find(player.name))
+          if (current_player.password == player.password &&
+              current_player.status != "game")
+            log_message(sprintf("user %s login forcely", player.name))
+            current_player.kill
+          else
+            login.incorrect_duplicated_player(str)
+            player = nil
+            break
+          end
+        end
+        LEAGUE.add(player)
+        break
+      else
+        client.write("LOGIN:incorrect" + eol)
+        client.write("type 'LOGIN name password' or 'LOGIN name password x1'" + eol) if (str.split.length >= 4)
+      end
+    ensure
+      $mutex.unlock
+    end
+  end                       # login loop
+  return [player, login]
 end
 
-def  write_pid_file(file)
-  open(file, "w") do |fh|
-    fh.print Process::pid, "\n"
+def setup_logger(log_file)
+  logger = Logger.new(log_file, 'daily')
+  logger.formatter = ShogiServer::Formatter.new
+  logger.level = $DEBUG ? Logger::DEBUG : Logger::INFO  
+  logger.datetime_format = "%Y-%m-%d %H:%M:%S"
+  return logger
+end
+
+def setup_watchdog_for_giant_lock
+  $mutex = Mutex::new
+  Thread::start do
+    Thread.pass
+    mutex_watchdog($mutex, 10)
   end
 end
 
-def mutex_watchdog(mutex, sec)
-  while true
-    begin
-      timeout(sec) do
-        mutex.lock
-        mutex.unlock
+def setup_floodgate
+  return Thread.start do 
+    Thread.pass
+    floodgate = ShogiServer::League::Floodgate.new(LEAGUE)
+    log_message("Flooddgate reloaded. The next match will start at %s." % 
+                [floodgate.next_time])
+
+    while (true)
+      begin
+        diff = floodgate.next_time - Time.now
+        if diff > 0
+          sleep(diff/2)
+          next
+        end
+        LEAGUE.reload
+        floodgate.match_game
+        floodgate.charge
+        next_time = floodgate.next_time
+        $mutex.synchronize do
+          log_message("Reloading source...")
+          ShogiServer.reload
+        end
+        floodgate = ShogiServer::League::Floodgate.new(LEAGUE, next_time)
+        log_message("Floodgate: The next match will start at %s." % 
+                    [floodgate.next_time])
+      rescue Exception => ex 
+        # ignore errors
+        log_error("[in Floodgate's thread] #{ex} #{ex.backtrace}")
       end
-      sleep(sec)
-    rescue TimeoutError
-      log_error("mutex watchdog timeout")
-      exit(1)
     end
   end
 end
 
 def main
-  $mutex = Mutex::new
-  Thread::start do
-    mutex_watchdog($mutex, 10)
-  end
-
+  
   $options = parse_command_line
   if (ARGV.length != 2)
     usage
     exit 2
   end
+  if $options["player-log-dir"]
+    $options["player-log-dir"] = File.expand_path($options["player-log-dir"])
+  end
+  if $options["player-log-dir"] && 
+     !File.directory?($options["player-log-dir"])
+    usage
+    exit 3
+  end
+  if $options["pid-file"] 
+    $options["pid-file"] = File.expand_path($options["pid-file"])
+  end
+  $options["floodgate-history"] ||= File.join(File.dirname(__FILE__), "floodgate_history.yaml")
+  $options["floodgate-history"] = File.expand_path($options["floodgate-history"])
 
   LEAGUE.event = ARGV.shift
   port = ARGV.shift
 
-  write_pid_file($options["pid-file"]) if ($options["pid-file"])
+  dir = $options["daemon"]
+  dir = File.expand_path(dir) if dir
+  if dir && ! File.exist?(dir)
+    FileUtils.mkdir(dir)
+  end
 
+  log_file = dir ? File.join(dir, "shogi-server.log") : STDOUT
+  $logger = setup_logger(log_file)
 
-  Thread.abort_on_exception = true
+  LEAGUE.dir = dir || TOP_DIR
 
-  server = TCPserver.open(port)
-  log_message("server started")
+  config = {}
+  config[:Port]       = port
+  config[:ServerType] = WEBrick::Daemon if $options["daemon"]
+  config[:Logger]     = $logger
+
+  fg_thread = nil
+
+  config[:StartCallback] = Proc.new do
+    srand
+    if $options["pid-file"]
+      write_pid_file($options["pid-file"])
+    end
+    setup_watchdog_for_giant_lock
+    LEAGUE.setup_players_database
+    fg_thread = setup_floodgate
+  end
+
+  config[:StopCallback] = Proc.new do
+    if $options["pid-file"]
+      FileUtils.rm($options["pid-file"], :force => true)
+    end
+  end
+
+  srand
+  server = WEBrick::GenericServer.new(config)
+  ["INT", "TERM"].each do |signal| 
+    trap(signal) do
+      server.shutdown
+      fg_thread.kill if fg_thread
+    end
+  end
+  trap("HUP") do
+    Dependencies.clear
+  end
+  $stderr.puts("server started as a deamon [Revision: #{ShogiServer::Revision}]") if $options["daemon"] 
+  log_message("server started [Revision: #{ShogiServer::Revision}]")
+
+  server.start do |client|
+      # client.sync = true # this is already set in WEBrick 
+      client.setsockopt(Socket::SOL_SOCKET, Socket::SO_KEEPALIVE, true)
+        # Keepalive time can be set by /proc/sys/net/ipv4/tcp_keepalive_time
+      player, login = login_loop(client) # loop
+      next unless player
 
-  while true
-    Thread::start(server.accept) do |client|
-      client.sync = true
-      player = nil
-      while (str = client.gets_timeout(Login_Time))
-        begin
-          $mutex.lock
-          str =~ /([\r\n]*)$/
-          eol = $1
-          if (good_login?(str))
-            player = Player::new(str, client)
-            if (LEAGUE.players[player.name])
-              if ((LEAGUE.players[player.name].password == player.password) &&
-                  (LEAGUE.players[player.name].status != "game"))
-                log_message(sprintf("user %s login forcely", player.name))
-                LEAGUE.players[player.name].kill
-              else
-                client.write_safe("LOGIN:incorrect" + eol)
-                client.write_safe(sprintf("username %s is already connected%s", player.name, eol)) if (str.split.length >= 4)
-                client.close
-                Thread::exit
-              end
-            end
-            LEAGUE.add(player)
-            break
-          else
-            client.write_safe("LOGIN:incorrect" + eol)
-            client.write_safe("type 'LOGIN name password' or 'LOGIN name password x1'" + eol) if (str.split.length >= 4)
-          end
-        ensure
-          $mutex.unlock
-        end
-      end                       # login loop
-      if (! player)
-        client.close
-        Thread::exit
-      end
       log_message(sprintf("user %s login", player.name))
-      player.run
+      login.process
+      player.setup_logger($options["player-log-dir"]) if $options["player-log-dir"]
+      player.run(login.csa_1st_str) # loop
+      $mutex.lock
       begin
-        $mutex.lock
         if (player.game)
           player.game.kill(player)
         end
-        player.finish
+        player.finish # socket has been closed
         LEAGUE.delete(player)
         log_message(sprintf("user %s logout", player.name))
       ensure
         $mutex.unlock
       end
-    end
   end
 end
 
+
 if ($0 == __FILE__)
-  LEAGUE = League::new
-  main
+  STDOUT.sync = true
+  STDERR.sync = true
+  TCPSocket.do_not_reverse_lookup = true
+  Thread.abort_on_exception = $DEBUG ? true : false
+
+  begin
+    LEAGUE = ShogiServer::League.new(TOP_DIR)
+    main
+  rescue Exception => ex
+    if $logger
+      log_error("main: #{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
+    else
+      $stderr.puts "main: #{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}"
+    end
+  end
 end