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Improved a way to handle diferred moves (2008-03-24's change),
[shogi-server/shogi-server.git] / shogi-server
index 3459a56..5d33d6f 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
 
+require 'kconv'
+require 'getoptlong'
+require 'thread'
+require 'timeout'
+require 'socket'
+require 'yaml'
+require 'yaml/store'
+require 'digest/md5'
+require 'webrick'
+require 'fileutils'
+
+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("#{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
+  return :exception
+end
+
+module ShogiServer # for a namespace
+
 Max_Identifier_Length = 32
 Default_Timeout = 60            # for single socket operation
 
-Default_Game_Name = "default:1500:0"
+Default_Game_Name = "default-1500-0"
 
 One_Time = 10
 Least_Time_Per_Move = 1
-Watchdog_Time = 30              # time for ping
 Login_Time = 300                # time for LOGIN
 
 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 League
 
-class TCPSocket
-  def gets_timeout(t = Default_Timeout)
-    begin
-      timeout(t) do
-        return self.gets
+  class Floodgate
+    class << self
+      def game_name?(str)
+        return /^floodgate-\d+-\d+$/.match(str) ? true : false
       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
+
+    def initialize(league)
+      @league = league
+      @next_time = nil
+      charge
+    end
+
+    def run
+      @thread = Thread.new do
+        Thread.pass
+        while (true)
+          begin
+            sleep(10)
+            next if Time.now < @next_time
+            @league.reload
+            match_game
+            charge
+          rescue Exception => ex 
+            # ignore errors
+            log_error("[in Floodgate's thread] #{ex}")
+          end
         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
+
+    def shutdown
+      @thread.kill if @thread
     end
-  end
-end
 
+    # private
+
+    def charge
+      now = Time.now
+      if now.min < 30
+        @next_time = Time.mktime(now.year, now.month, now.day, now.hour, 30)
+      else
+        @next_time = Time.mktime(now.year, now.month, now.day, now.hour) + 3600
+      end
+      # for test
+      # if now.sec < 30
+      #   @next_time = Time.mktime(now.year, now.month, now.day, now.hour, now.min, 30)
+      # else
+      #   @next_time = Time.mktime(now.year, now.month, now.day, now.hour, now.min) + 60
+      # end
+    end
+
+    def match_game
+      players = @league.find_all_players do |pl|
+        pl.status == "game_waiting" &&
+        Floodgate.game_name?(pl.game_name) &&
+        pl.sente == nil
+      end
+      log_warning("DEBUG: %s" % [File.join(File.dirname(__FILE__), "pairing.rb")])
+      load File.join(File.dirname(__FILE__), "pairing.rb")
+      Pairing.default_pairing.match(players)
+    end
+  end # class Floodgate
 
-class League
   def initialize
+    @mutex = Mutex.new # guard @players
     @games = Hash::new
     @players = Hash::new
     @event = nil
+    @dir = File.dirname(__FILE__)
+    @floodgate = Floodgate.new(self)
+    @floodgate.run
+  end
+  attr_accessor :players, :games, :event, :dir
+
+  def shutdown
+    @mutex.synchronize do
+      @players.each {|a| save(a)}
+    end
+    @floodgate.shutdown
+  end
+
+  # this should be called just after instanciating a League object.
+  def setup_players_database
+    @db = YAML::Store.new(File.join(@dir, "players.yaml"))
   end
-  attr_accessor :players, :games, :event
 
   def add(player)
-    @players[player.name] = player
+    self.load(player) if player.id
+    @mutex.synchronize do
+      @players[player.name] = player
+    end
   end
+  
   def delete(player)
-    @players.delete(player.name)
+    @mutex.synchronize do
+      save(player)
+      @players.delete(player.name)
+    end
+  end
+
+  def reload
+    @mutex.synchronize do
+      @players.each {|player| load(player)}
+    end
+  end
+
+  def find_all_players
+    found = nil
+    @mutex.synchronize do
+      found = @players.find_all do |name, player|
+        yield player
+      end
+    end
+    return found.map {|a| a.last}
+  end
+  
+  def find(player_name)
+    found = nil
+    @mutex.synchronize do
+      found = @players[player_name]
+    end
+    return found
+  end
+
+  def get_player(status, game_name, sente, searcher)
+    found = nil
+    @mutex.synchronize do
+      found = @players.find do |name, player|
+        (player.status == status) &&
+        (player.game_name == game_name) &&
+        ( (sente == nil) || 
+          (player.sente == nil) || 
+          (player.sente == sente) ) &&
+        (player.name != searcher.name)
+      end
+    end
+    return found ? found.last : nil
+  end
+  
+  def load(player)
+    hash = search(player.id)
+    return unless hash
+
+    # a current user
+    player.name          = hash['name']
+    player.rate          = hash['rate'] || 0
+    player.modified_at   = hash['last_modified']
+    player.rating_group  = hash['rating_group']
+    player.win           = hash['win']  || 0
+    player.loss          = hash['loss'] || 0
+    player.last_game_win = hash['last_game_win'] || false
+  end
+
+  def save(player)
+    @db.transaction do
+      break unless  @db["players"]
+      @db["players"].each do |group, players|
+        hash = players[player.id]
+        if hash
+          hash['last_game_win'] = player.last_game_win
+          break
+        end
+      end
+    end
   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
+
+  def search(id)
+    hash = nil
+    @db.transaction(true) do
+      break unless  @db["players"]
+      @db["players"].each do |group, players|
+        hash = players[id]
+        break if hash
+      end
+    end
+    hash
+  end
+
+  def rated_players
+    players = []
+    @db.transaction(true) do
+      break unless  @db["players"]
+      @db["players"].each do |group, players_hash|
+        players << players_hash.keys
       end
     end
-    return nil
+    return players.flatten.collect do |id|
+      p = BasicPlayer.new
+      p.id = id
+      self.load(p)
+      p
+    end
   end
 end
 
-class Player
-  def initialize(str, socket)
+
+######################################################
+# Processes the LOGIN command.
+#
+class Login
+  def Login.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
+  end
+
+  def Login.good_game_name?(str)
+    if ((str =~ /^(.+)-\d+-\d+$/) && (good_identifier?($1)))
+      return true
+    else
+      return false
+    end
+  end
+
+  def Login.good_identifier?(str)
+    if str =~ /\A[\w\d_@\-\.]{1,#{Max_Identifier_Length}}\z/
+      return true
+    else
+      return false
+    end
+  end
+
+  def Login.factory(str, player)
+    (login, player.name, password, ext) = str.chomp.split
+    if ext
+      return Loginx1.new(player, password)
+    else
+      return LoginCSA.new(player, password)
+    end
+  end
+
+  attr_reader :player
+  
+  # the first command that will be executed just after LOGIN.
+  # If it is nil, the default process will be started.
+  attr_reader :csa_1st_str
+
+  def initialize(player, password)
+    @player = player
+    @csa_1st_str = nil
+    parse_password(password)
+  end
+
+  def process
+    @player.write_safe(sprintf("LOGIN:%s OK\n", @player.name))
+    log_message(sprintf("user %s run in %s mode", @player.name, @player.protocol))
+  end
+
+  def incorrect_duplicated_player(str)
+    @player.write_safe("LOGIN:incorrect\n")
+    @player.write_safe(sprintf("username %s is already connected\n", @player.name)) if (str.split.length >= 4)
+    sleep 3 # wait for sending the above messages.
+    @player.name = "%s [duplicated]" % [@player.name]
+    @player.finish
+  end
+end
+
+######################################################
+# Processes LOGIN for the CSA standard mode.
+#
+class LoginCSA < Login
+  PROTOCOL = "CSA"
+
+  def initialize(player, password)
+    @gamename = nil
+    super
+    @player.protocol = PROTOCOL
+  end
+
+  def parse_password(password)
+    if Login.good_game_name?(password)
+      @gamename = password
+      @player.set_password(nil)
+    elsif password.split(",").size > 1
+      @gamename, *trip = password.split(",")
+      @player.set_password(trip.join(","))
+    else
+      @player.set_password(password)
+      @gamename = Default_Game_Name
+    end
+    @gamename = self.class.good_game_name?(@gamename) ? @gamename : Default_Game_Name
+  end
+
+  def process
+    super
+    @csa_1st_str = "%%GAME #{@gamename} *"
+  end
+end
+
+######################################################
+# Processes LOGIN for the extented mode.
+#
+class Loginx1 < Login
+  PROTOCOL = "x1"
+
+  def initialize(player, password)
+    super
+    @player.protocol = PROTOCOL
+  end
+  
+  def parse_password(password)
+    @player.set_password(password)
+  end
+
+  def process
+    super
+    @player.write_safe(sprintf("##[LOGIN] +OK %s\n", PROTOCOL))
+  end
+end
+
+
+class BasicPlayer
+  def initialize
+    @id = nil
     @name = nil
     @password = nil
+    @last_game_win = false
+  end
+
+  # Idetifier of the player in the rating system
+  attr_accessor :id
+
+  # Name of the player
+  attr_accessor :name
+  
+  # Password of the player, which does not include a trip
+  attr_accessor :password
+
+  # Score in the rating sysem
+  attr_accessor :rate
+
+  # Number of games for win and loss in the rating system
+  attr_accessor :win, :loss
+  
+  # Group in the rating system
+  attr_accessor :rating_group
+
+  # Last timestamp when the rate was modified
+  attr_accessor :modified_at
+
+  # Whether win the previous game or not
+  attr_accessor :last_game_win
+
+  def modified_at
+    @modified_at || Time.now
+  end
+
+  def rate=(new_rate)
+    if @rate != new_rate
+      @rate = new_rate
+      @modified_at = Time.now
+    end
+  end
+
+  def rated?
+    @id != nil
+  end
+
+  def last_game_win?
+    return @last_game_win
+  end
+
+  def simple_id
+    if @trip
+      simple_name = @name.gsub(/@.*?$/, '')
+      "%s+%s" % [simple_name, @trip[0..8]]
+    else
+      @name
+    end
+  end
+
+  ##
+  # Parses str in the LOGIN command, sets up @id and @trip
+  #
+  def set_password(str)
+    if str && !str.empty?
+      @password = str.strip
+      @id   = "%s+%s" % [@name, Digest::MD5.hexdigest(@password)]
+    else
+      @id = @password = nil
+    end
+  end
+end
+
+
+class Player < BasicPlayer
+  def initialize(str, socket, eol=nil)
+    super()
     @socket = socket
-    @status = "connected"        # game_waiting -> agree_waiting -> start_waiting -> game -> finished
+    @status = "connected"       # game_waiting -> agree_waiting -> start_waiting -> game -> finished
 
     @protocol = nil             # CSA or x1
-    @eol = "\m"                 # favorite eol code
+    @eol = eol || "\m"          # favorite eol code
     @game = nil
     @game_name = ""
     @mytime = 0                 # set in start method also
     @sente = nil
-    @watchdog_thread = nil
-    @main_thread = nil
-    login(str)
+    @socket_buffer = []
+    @main_thread = Thread::current
+    @mutex_write_guard = Mutex.new
   end
 
-  attr_accessor :name, :password, :socket, :status
-  attr_accessor :protocol, :eol, :game, :mytime, :main_thread, :watchdog_thread, :game_name, :sente
+  attr_accessor :socket, :status
+  attr_accessor :protocol, :eol, :game, :mytime, :game_name, :sente
+  attr_accessor :main_thread
+  attr_reader :socket_buffer
+  
   def kill
+    log_message(sprintf("user %s killed", @name))
+    if (@game)
+      @game.kill(self)
+    end
     finish
     Thread::kill(@main_thread) if @main_thread
   end
@@ -139,92 +484,104 @@ class Player
     if (@status != "finished")
       @status = "finished"
       log_message(sprintf("user %s finish", @name))    
-      Thread::kill(@watchdog_thread) if @watchdog_thread
-      @socket.close if (! @socket.closed?)
+      begin
+#        @socket.close if (! @socket.closed?)
+      rescue
+        log_message(sprintf("user %s finish failed", @name))    
+      end
     end
   end
 
-  def watchdog(time)
-    while true
+  def write_safe(str)
+    @mutex_write_guard.synchronize do
       begin
-        Ping.pingecho(@socket.addr[3])
-      rescue
+        if @socket.closed?
+          log_warning("%s's socket has been closed." % [@name])
+          return
+        end
+        if r = select(nil, [@socket], nil, 20)
+          r[1].first.write(str)
+        else
+          log_error("Sending a message to #{@name} timed up.")
+        end
+      rescue Exception => ex
+        log_error("Failed to send a message to #{@name}. #{ex.class}: #{ex.message}\t#{ex.backtrace[0]}")
       end
-      sleep(time)
     end
   end
 
   def to_s
-    if ((status == "game_waiting") ||
-        (status == "agree_waiting") ||
-        (status == "game"))
+    if ["game_waiting", "start_waiting", "agree_waiting", "game"].include?(status)
       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)
+        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 write_safe(str)
-    @socket.write_safe(str.gsub(/[\r\n]+/, @eol))
-  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
-    @watchdog_thread = Thread::start do
-      watchdog(Watchdog_Time)
-    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)))
+  def run(csa_1st_str=nil)
+    while ( csa_1st_str || 
+            str = gets_safe(@socket, (@socket_buffer.empty? ? Default_Timeout : 1)) )
+      $mutex.lock
       begin
-        $mutex.lock
+        if (@game && @game.turn?(self))
+          @socket_buffer << str
+          str = @socket_buffer.shift
+        end
+        log_message("%s (%s)" % [str, @socket_buffer.map {|a| String === a ? a.strip : a }.join(",")]) if $DEBUG
+
         if (csa_1st_str)
           str = csa_1st_str
           csa_1st_str = nil
         end
+
         if (@status == "finished")
           return
         end
-        str.chomp! if (str.class == String)
-        case str
-        when /^[\+\-%][^%]/, :timeout
+        str.chomp! if (str.class == String) # may be strip! ?
+        case str 
+        when "" 
+          # Application-level protocol for Keep-Alive
+          # If the server gets LF, it sends back LF.
+          # 30 sec rule (client may not send LF again within 30 sec) is not implemented yet.
+          write_safe("\n")
+        when /^[\+\-][^%]/
+          if (@status == "game")
+            array_str = str.split(",")
+            move = array_str.shift
+            additional = array_str.shift
+            if /^'(.*)/ =~ additional
+              comment = array_str.unshift("'*#{$1.toeuc}")
+            end
+            s = @game.handle_one_move(move, self)
+            @game.fh.print("#{Kconv.toeuc(comment.first)}\n") if (comment && comment.first && !s)
+            return if (s && @protocol == LoginCSA::PROTOCOL)
+          end
+        when /^%[^%]/, :timeout
           if (@status == "game")
             s = @game.handle_one_move(str, self)
-            return if (s && @protocol == "CSA")
+            return if (s && @protocol == LoginCSA::PROTOCOL)
+          # else
+          #   begin
+          #     @socket.write("##[KEEPALIVE] #{Time.now}\n")
+          #   rescue Exception => ex
+          #     log_error("Failed to send a keepalive to #{@name}.")
+          #     log_error("#{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
+          #     return
+          #   end
           end
+        when :exception
+          log_error("Failed to receive a message from #{@name}.")
+          return
         when /^REJECT/
           if (@status == "agree_waiting")
             @game.reject(@name)
-            return if (@protocol == "CSA")
+            return if (@protocol == LoginCSA::PROTOCOL)
           else
             write_safe(sprintf("##[ERROR] you are in %s status. AGREE is valid in agree_waiting status\n", @status))
           end
@@ -240,59 +597,126 @@ class Player
           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 = $2
-          if (! good_game_name?(game_name))
+          write_safe(
+            %!##[HELP] available commands "%%WHO", "%%CHAT str", "%%GAME game_name +", "%%GAME game_name -"\n!)
+        when /^%%RATING/
+          players = LEAGUE.rated_players
+          players.sort {|a,b| b.rate <=> a.rate}.each do |p|
+            write_safe("##[RATING] %s \t %4d @%s\n" % 
+                       [p.simple_id, p.rate, p.modified_at.strftime("%Y-%m-%d")])
+          end
+          write_safe("##[RATING] +OK\n")
+        when /^%%VERSION/
+          write_safe "##[VERSION] Shogi Server revision #{Revision}\n"
+          write_safe("##[VERSION] +OK\n")
+        when /^%%GAME\s*$/
+          if ((@status == "connected") || (@status == "game_waiting"))
+            @status = "connected"
+            @game_name = ""
+          else
+            write_safe(sprintf("##[ERROR] you are in %s status. GAME is valid in connected or game_waiting status\n", @status))
+          end
+        when /^%%(GAME|CHALLENGE)\s+(\S+)\s+([\+\-\*])\s*$/
+          command_name = $1
+          game_name = $2
+          my_sente_str = $3
+          if (! Login::good_game_name?(game_name))
             write_safe(sprintf("##[ERROR] bad game name\n"))
+            next
           elsif ((@status == "connected") || (@status == "game_waiting"))
-            @status = "game_waiting"
+            ## continue
           else
             write_safe(sprintf("##[ERROR] you are in %s status. GAME is valid in connected or game_waiting status\n", @status))
+            next
           end
-          @status = "game_waiting"
-          @game_name = $1
-          if (sente_str == "+")
-            @sente = true
-            rival_sente = false
-          elsif (sente_str == "-")
-            @sente = false
-            rival_sente = true
-          else
+
+          rival = nil
+          if (League::Floodgate.game_name?(game_name))
+            if (my_sente_str != "*")
+              write_safe(sprintf("##[ERROR] You are not allowed to specify TEBAN %s for the game %s\n", my_sente_str, game_name))
+              next
+            end
             @sente = nil
-            rival_sente = nil
+          else
+            if (my_sente_str == "*")
+              rival = LEAGUE.get_player("game_waiting", game_name, nil, self) # no preference
+            elsif (my_sente_str == "+")
+              rival = LEAGUE.get_player("game_waiting", game_name, false, self) # rival must be gote
+            elsif (my_sente_str == "-")
+              rival = LEAGUE.get_player("game_waiting", game_name, true, self) # rival must be sente
+            else
+              ## never reached
+              write_safe(sprintf("##[ERROR] bad game option\n"))
+              next
+            end
           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)
+            @game_name = game_name
+            if ((my_sente_str == "*") && (rival.sente == nil))
               if (rand(2) == 0)
                 @sente = true
-                rival_sente = false
+                rival.sente = false
               else
                 @sente = false
-                rival_sente = true
+                rival.sente = true
               end
-            elsif (rival_sente == nil)
-              if (@sente)
-                rival_sente = false
+            elsif (rival.sente == true) # rival has higher priority
+              @sente = false
+            elsif (rival.sente == false)
+              @sente = true
+            elsif (my_sente_str == "+")
+              @sente = true
+              rival.sente = false
+            elsif (my_sente_str == "-")
+              @sente = false
+              rival.sente = true
+            else
+              ## never reached
+            end
+            Game::new(@game_name, self, rival)
+          else # rival not found
+            if (command_name == "GAME")
+              @status = "game_waiting"
+              @game_name = game_name
+              if (my_sente_str == "+")
+                @sente = true
+              elsif (my_sente_str == "-")
+                @sente = false
               else
-                rival_sente = true
+                @sente = nil
               end
+            else                # challenge
+              write_safe(sprintf("##[ERROR] can't find rival for %s\n", game_name))
+              @status = "connected"
+              @game_name = ""
+              @sente = nil
             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)
+            if (player.protocol != LoginCSA::PROTOCOL)
+              player.write_safe(sprintf("##[CHAT][%s] %s\n", @name, message)) 
             end
           end
         when /^%%LIST/
@@ -302,12 +726,6 @@ class Player
           end
           buf.push("##[LIST] +OK\n")
           write_safe(buf.join)
-        when /^%%SHOW\s+(\S+)/
-          id = $1
-          if (LEAGUE.games[id])
-            write_safe(LEAGUE.games[id].board.to_s.gsub(/^/, '##[SHOW] '))
-          end
-          write_safe("##[SHOW] +OK\n")
         when /^%%WHO/
           buf = Array::new
           LEAGUE.players.each do |name, player|
@@ -319,153 +737,777 @@ class Player
           @status = "connected"
           write_safe("LOGOUT:completed\n")
           return
+        when /^CHALLENGE/
+          # This command is only available for CSA's official testing server.
+          # So, this means nothing for this program.
+          write_safe("CHALLENGE ACCEPTED\n")
+        when /^\s*$/
+          ## ignore null string
         else
-          write_safe(sprintf("##[ERROR] unknown command %s\n", str))
+          msg = "##[ERROR] unknown command %s\n" % [str]
+          write_safe(msg)
+          log_error(msg)
         end
       ensure
         $mutex.unlock
       end
-    end                         # enf of while
-  end
-end
+    end # enf of while
+  end # def run
+end # class
+
+class Piece
+  PROMOTE = {"FU" => "TO", "KY" => "NY", "KE" => "NK", 
+             "GI" => "NG", "KA" => "UM", "HI" => "RY"}
+  def initialize(board, x, y, sente, promoted=false)
+    @board = board
+    @x = x
+    @y = y
+    @sente = sente
+    @promoted = promoted
+
+    if ((x == 0) || (y == 0))
+      if (sente)
+        hands = board.sente_hands
+      else
+        hands = board.gote_hands
+      end
+      hands.push(self)
+      hands.sort! {|a, b|
+        a.name <=> b.name
+      }
+    else
+      @board.array[x][y] = self
+    end
+  end
+  attr_accessor :promoted, :sente, :x, :y, :board
+
+  def room_of_head?(x, y, name)
+    true
+  end
+
+  def movable_grids
+    return adjacent_movable_grids + far_movable_grids
+  end
+
+  def far_movable_grids
+    return []
+  end
+
+  def jump_to?(x, y)
+    if ((1 <= x) && (x <= 9) && (1 <= y) && (y <= 9))
+      if ((@board.array[x][y] == nil) || # dst is empty
+          (@board.array[x][y].sente != @sente)) # dst is enemy
+        return true
+      end
+    end
+    return false
+  end
+
+  def put_to?(x, y)
+    if ((1 <= x) && (x <= 9) && (1 <= y) && (y <= 9))
+      if (@board.array[x][y] == nil) # dst is empty?
+        return true
+      end
+    end
+    return false
+  end
+
+  def adjacent_movable_grids
+    grids = Array::new
+    if (@promoted)
+      moves = @promoted_moves
+    else
+      moves = @normal_moves
+    end
+    moves.each do |(dx, dy)|
+      if (@sente)
+        cand_y = @y - dy
+      else
+        cand_y = @y + dy
+      end
+      cand_x = @x + dx
+      if (jump_to?(cand_x, cand_y))
+        grids.push([cand_x, cand_y])
+      end
+    end
+    return grids
+  end
+
+  def move_to?(x, y, name)
+    return false if (! room_of_head?(x, y, name))
+    return false if ((name != @name) && (name != @promoted_name))
+    return false if (@promoted && (name != @promoted_name)) # can't un-promote
+
+    if (! @promoted)
+      return false if (((@x == 0) || (@y == 0)) && (name != @name)) # can't put promoted piece
+      if (@sente)
+        return false if ((4 <= @y) && (4 <= y) && (name != @name)) # can't promote
+      else
+        return false if ((6 >= @y) && (6 >= y) && (name != @name))
+      end
+    end
+
+    if ((@x == 0) || (@y == 0))
+      return jump_to?(x, y)
+    else
+      return movable_grids.include?([x, y])
+    end
+  end
+
+  def move_to(x, y)
+    if ((@x == 0) || (@y == 0))
+      if (@sente)
+        @board.sente_hands.delete(self)
+      else
+        @board.gote_hands.delete(self)
+      end
+      @board.array[x][y] = self
+    elsif ((x == 0) || (y == 0))
+      @promoted = false         # clear promoted flag before moving to hands
+      if (@sente)
+        @board.sente_hands.push(self)
+      else
+        @board.gote_hands.push(self)
+      end
+      @board.array[@x][@y] = nil
+    else
+      @board.array[@x][@y] = nil
+      @board.array[x][y] = self
+    end
+    @x = x
+    @y = y
+  end
+
+  def point
+    @point
+  end
+
+  def name
+    @name
+  end
+
+  def promoted_name
+    @promoted_name
+  end
+
+  def to_s
+    if (@sente)
+      sg = "+"
+    else
+      sg = "-"
+    end
+    if (@promoted)
+      n = @promoted_name
+    else
+      n = @name
+    end
+    return sg + n
+  end
+end
+
+class PieceFU < Piece
+  def initialize(*arg)
+    @point = 1
+    @normal_moves = [[0, +1]]
+    @promoted_moves = [[0, +1], [+1, +1], [-1, +1], [+1, +0], [-1, +0], [0, -1]]
+    @name = "FU"
+    @promoted_name = "TO"
+    super
+  end
+  def room_of_head?(x, y, name)
+    if (name == "FU")
+      if (@sente)
+        return false if (y == 1)
+      else
+        return false if (y == 9)
+      end
+      ## 2fu check
+      c = 0
+      iy = 1
+      while (iy <= 9)
+        if ((iy  != @y) &&      # not source position
+            @board.array[x][iy] &&
+            (@board.array[x][iy].sente == @sente) && # mine
+            (@board.array[x][iy].name == "FU") &&
+            (@board.array[x][iy].promoted == false))
+          return false
+        end
+        iy = iy + 1
+      end
+    end
+    return true
+  end
+end
+
+class PieceKY  < Piece
+  def initialize(*arg)
+    @point = 1
+    @normal_moves = []
+    @promoted_moves = [[0, +1], [+1, +1], [-1, +1], [+1, +0], [-1, +0], [0, -1]]
+    @name = "KY"
+    @promoted_name = "NY"
+    super
+  end
+  def room_of_head?(x, y, name)
+    if (name == "KY")
+      if (@sente)
+        return false if (y == 1)
+      else
+        return false if (y == 9)
+      end
+    end
+    return true
+  end
+  def far_movable_grids
+    grids = Array::new
+    if (@promoted)
+      return []
+    else
+      if (@sente)                 # up
+        cand_x = @x
+        cand_y = @y - 1
+        while (jump_to?(cand_x, cand_y))
+          grids.push([cand_x, cand_y])
+          break if (! put_to?(cand_x, cand_y))
+          cand_y = cand_y - 1
+        end
+      else                        # down
+        cand_x = @x
+        cand_y = @y + 1
+        while (jump_to?(cand_x, cand_y))
+          grids.push([cand_x, cand_y])
+          break if (! put_to?(cand_x, cand_y))
+          cand_y = cand_y + 1
+        end
+      end
+      return grids
+    end
+  end
+end
+class PieceKE  < Piece
+  def initialize(*arg)
+    @point = 1
+    @normal_moves = [[+1, +2], [-1, +2]]
+    @promoted_moves = [[0, +1], [+1, +1], [-1, +1], [+1, +0], [-1, +0], [0, -1]]
+    @name = "KE"
+    @promoted_name = "NK"
+    super
+  end
+  def room_of_head?(x, y, name)
+    if (name == "KE")
+      if (@sente)
+        return false if ((y == 1) || (y == 2))
+      else
+        return false if ((y == 9) || (y == 8))
+      end
+    end
+    return true
+  end
+end
+class PieceGI  < Piece
+  def initialize(*arg)
+    @point = 1
+    @normal_moves = [[0, +1], [+1, +1], [-1, +1], [+1, -1], [-1, -1]]
+    @promoted_moves = [[0, +1], [+1, +1], [-1, +1], [+1, +0], [-1, +0], [0, -1]]
+    @name = "GI"
+    @promoted_name = "NG"
+    super
+  end
+end
+class PieceKI  < Piece
+  def initialize(*arg)
+    @point = 1
+    @normal_moves = [[0, +1], [+1, +1], [-1, +1], [+1, +0], [-1, +0], [0, -1]]
+    @promoted_moves = []
+    @name = "KI"
+    @promoted_name = nil
+    super
+  end
+end
+class PieceKA  < Piece
+  def initialize(*arg)
+    @point = 5
+    @normal_moves = []
+    @promoted_moves = [[0, +1], [+1, 0], [-1, 0], [0, -1]]
+    @name = "KA"
+    @promoted_name = "UM"
+    super
+  end
+  def far_movable_grids
+    grids = Array::new
+    ## up right
+    cand_x = @x - 1
+    cand_y = @y - 1
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_x = cand_x - 1
+      cand_y = cand_y - 1
+    end
+    ## down right
+    cand_x = @x - 1
+    cand_y = @y + 1
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_x = cand_x - 1
+      cand_y = cand_y + 1
+    end
+    ## up left
+    cand_x = @x + 1
+    cand_y = @y - 1
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_x = cand_x + 1
+      cand_y = cand_y - 1
+    end
+    ## down left
+    cand_x = @x + 1
+    cand_y = @y + 1
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_x = cand_x + 1
+      cand_y = cand_y + 1
+    end
+    return grids
+  end
+end
+class PieceHI  < Piece
+  def initialize(*arg)
+    @point = 5
+    @normal_moves = []
+    @promoted_moves = [[+1, +1], [-1, +1], [+1, -1], [-1, -1]]
+    @name = "HI"
+    @promoted_name = "RY"
+    super
+  end
+  def far_movable_grids
+    grids = Array::new
+    ## up
+    cand_x = @x
+    cand_y = @y - 1
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_y = cand_y - 1
+    end
+    ## down
+    cand_x = @x
+    cand_y = @y + 1
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_y = cand_y + 1
+    end
+    ## right
+    cand_x = @x - 1
+    cand_y = @y
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_x = cand_x - 1
+    end
+    ## down
+    cand_x = @x + 1
+    cand_y = @y
+    while (jump_to?(cand_x, cand_y))
+      grids.push([cand_x, cand_y])
+      break if (! put_to?(cand_x, cand_y))
+      cand_x = cand_x + 1
+    end
+    return grids
+  end
+end
+class PieceOU < Piece
+  def initialize(*arg)
+    @point = 0
+    @normal_moves = [[0, +1], [+1, +1], [-1, +1], [+1, +0], [-1, +0], [0, -1], [+1, -1], [-1, -1]]
+    @promoted_moves = []
+    @name = "OU"
+    @promoted_name = nil
+    super
+  end
+end
+
+class Board
+  def initialize
+    @sente_hands = Array::new
+    @gote_hands  = Array::new
+    @history       = Hash::new(0)
+    @sente_history = Hash::new(0)
+    @gote_history  = Hash::new(0)
+    @array = [[], [], [], [], [], [], [], [], [], []]
+    @move_count = 0
+    @teban = nil # black => true, white => false
+  end
+  attr_accessor :array, :sente_hands, :gote_hands, :history, :sente_history, :gote_history
+  attr_reader :move_count
+
+  def initial
+    PieceKY::new(self, 1, 1, false)
+    PieceKE::new(self, 2, 1, false)
+    PieceGI::new(self, 3, 1, false)
+    PieceKI::new(self, 4, 1, false)
+    PieceOU::new(self, 5, 1, false)
+    PieceKI::new(self, 6, 1, false)
+    PieceGI::new(self, 7, 1, false)
+    PieceKE::new(self, 8, 1, false)
+    PieceKY::new(self, 9, 1, false)
+    PieceKA::new(self, 2, 2, false)
+    PieceHI::new(self, 8, 2, false)
+    (1..9).each do |i|
+      PieceFU::new(self, i, 3, false)
+    end
+
+    PieceKY::new(self, 1, 9, true)
+    PieceKE::new(self, 2, 9, true)
+    PieceGI::new(self, 3, 9, true)
+    PieceKI::new(self, 4, 9, true)
+    PieceOU::new(self, 5, 9, true)
+    PieceKI::new(self, 6, 9, true)
+    PieceGI::new(self, 7, 9, true)
+    PieceKE::new(self, 8, 9, true)
+    PieceKY::new(self, 9, 9, true)
+    PieceKA::new(self, 8, 8, true)
+    PieceHI::new(self, 2, 8, true)
+    (1..9).each do |i|
+      PieceFU::new(self, i, 7, true)
+    end
+    @teban = true
+  end
+
+  def have_piece?(hands, name)
+    piece = hands.find { |i|
+      i.name == name
+    }
+    return piece
+  end
+
+  def move_to(x0, y0, x1, y1, name, sente)
+    if (sente)
+      hands = @sente_hands
+    else
+      hands = @gote_hands
+    end
+
+    if ((x0 == 0) || (y0 == 0))
+      piece = have_piece?(hands, name)
+      return :illegal if (! piece.move_to?(x1, y1, name)) # TODO null check for the piece?
+      piece.move_to(x1, y1)
+    else
+      return :illegal if (! @array[x0][y0].move_to?(x1, y1, name))  # TODO null check?
+      if (@array[x0][y0].name != name) # promoted ?
+        @array[x0][y0].promoted = true
+      end
+      if (@array[x1][y1]) # capture
+        if (@array[x1][y1].name == "OU")
+          return :outori        # return board update
+        end
+        @array[x1][y1].sente = @array[x0][y0].sente
+        @array[x1][y1].move_to(0, 0)
+        hands.sort! {|a, b| # TODO refactor. Move to Piece class
+          a.name <=> b.name
+        }
+      end
+      @array[x0][y0].move_to(x1, y1)
+    end
+    @move_count += 1
+    @teban = @teban ? false : true
+    return true
+  end
+
+  def look_for_ou(sente)
+    x = 1
+    while (x <= 9)
+      y = 1
+      while (y <= 9)
+        if (@array[x][y] &&
+            (@array[x][y].name == "OU") &&
+            (@array[x][y].sente == sente))
+          return @array[x][y]
+        end
+        y = y + 1
+      end
+      x = x + 1
+    end
+    raise "can't find ou"
+  end
+
+  # note checkmate, but check. sente is checked.
+  def checkmated?(sente)        # sente is loosing
+    ou = look_for_ou(sente)
+    x = 1
+    while (x <= 9)
+      y = 1
+      while (y <= 9)
+        if (@array[x][y] &&
+            (@array[x][y].sente != sente))
+          if (@array[x][y].movable_grids.include?([ou.x, ou.y]))
+            return true
+          end
+        end
+        y = y + 1
+      end
+      x = x + 1
+    end
+    return false
+  end
+
+  def uchifuzume?(sente)
+    rival_ou = look_for_ou(! sente)   # rival's ou
+    if (sente)                  # rival is gote
+      if ((rival_ou.y != 9) &&
+          (@array[rival_ou.x][rival_ou.y + 1]) &&
+          (@array[rival_ou.x][rival_ou.y + 1].name == "FU") &&
+          (@array[rival_ou.x][rival_ou.y + 1].sente == sente)) # uchifu true
+        fu_x = rival_ou.x
+        fu_y = rival_ou.y + 1
+      else
+        return false
+      end
+    else                        # gote
+      if ((rival_ou.y != 1) &&
+          (@array[rival_ou.x][rival_ou.y - 1]) &&
+          (@array[rival_ou.x][rival_ou.y - 1].name == "FU") &&
+          (@array[rival_ou.x][rival_ou.y - 1].sente == sente)) # uchifu true
+        fu_x = rival_ou.x
+        fu_y = rival_ou.y - 1
+      else
+        return false
+      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
+    ## case: rival_ou is moving
+    rival_ou.movable_grids.each do |(cand_x, cand_y)|
+      tmp_board = Marshal.load(Marshal.dump(self))
+      s = tmp_board.move_to(rival_ou.x, rival_ou.y, cand_x, cand_y, "OU", ! sente)
+      raise "internal error" if (s != true)
+      if (! tmp_board.checkmated?(! sente)) # good move
+        return false
+      end
+    end
 
-  def promoted_name
-    PROMOTE[name]
+    ## case: rival is capturing fu
+    x = 1
+    while (x <= 9)
+      y = 1
+      while (y <= 9)
+        if (@array[x][y] &&
+            (@array[x][y].sente != sente) &&
+            @array[x][y].movable_grids.include?([fu_x, fu_y])) # capturable
+          
+          names = []
+          if (@array[x][y].promoted)
+            names << @array[x][y].promoted_name
+          else
+            names << @array[x][y].name
+            if @array[x][y].promoted_name && 
+               @array[x][y].move_to?(fu_x, fu_y, @array[x][y].promoted_name)
+              names << @array[x][y].promoted_name 
+            end
+          end
+          names.map! do |name|
+            tmp_board = Marshal.load(Marshal.dump(self))
+            s = tmp_board.move_to(x, y, fu_x, fu_y, name, ! sente)
+            if s == :illegal
+              s # result
+            else
+              tmp_board.checkmated?(! sente) # result
+            end
+          end
+          all_illegal = names.find {|a| a != :illegal}
+          raise "internal error: legal move not found" if all_illegal == nil
+          r = names.find {|a| a == false} # good move
+          return false if r == false # found good move
+        end
+        y = y + 1
+      end
+      x = x + 1
+    end
+    return true
   end
 
-  def to_s
-    if (@sente)
-      sg = "+"
+  # @[sente|gote]_history has at least one item while the player is checking the other or 
+  # the other escapes.
+  def update_sennichite(player)
+    str = to_s
+    @history[str] += 1
+    if checkmated?(!player)
+      if (player)
+        @sente_history["dummy"] = 1  # flag to see Sente player is checking Gote player
+      else
+        @gote_history["dummy"]  = 1  # flag to see Gote player is checking Sente player
+      end
     else
-      sg = "-"
+      if (player)
+        @sente_history.clear # no more continuous check
+      else
+        @gote_history.clear  # no more continuous check
+      end
     end
-    if (@promoted)
-      n = PROMOTE[@name]
+    if @sente_history.size > 0  # possible for Sente's or Gote's turn
+      @sente_history[str] += 1
+    end
+    if @gote_history.size > 0   # possible for Sente's or Gote's turn
+      @gote_history[str] += 1
+    end
+  end
+
+  def oute_sennichite?(player)
+    if (@sente_history[to_s] >= 4)
+      return :oute_sennichite_sente_lose
+    elsif (@gote_history[to_s] >= 4)
+      return :oute_sennichite_gote_lose
     else
-      n = @name
+      return nil
     end
-    return sg + n
   end
-end
 
+  def sennichite?(sente)
+    if (@history[to_s] >= 4) # already 3 times
+      return true
+    end
+    return false
+  end
 
+  def good_kachi?(sente)
+    if (checkmated?(sente))
+      puts "'NG: Checkmating." if $DEBUG
+      return false 
+    end
+    
+    ou = look_for_ou(sente)
+    if (sente && (ou.y >= 4))
+      puts "'NG: Black's OU does not enter yet." if $DEBUG
+      return false     
+    end  
+    if (! sente && (ou.y <= 6))
+      puts "'NG: White's OU does not enter yet." if $DEBUG
+      return false 
+    end
+      
+    number = 0
+    point = 0
 
-class Board
-  def initialize
-    @sente_hands = Array::new
-    @gote_hands = Array::new
-    @array = [[], [], [], [], [], [], [], [], [], []]
-  end
-  attr_accessor :array, :sente_hands, :gote_hands
+    if (sente)
+      hands = @sente_hands
+      r = [1, 2, 3]
+    else
+      hands = @gote_hands
+      r = [7, 8, 9]
+    end
+    r.each do |y|
+      x = 1
+      while (x <= 9)
+        if (@array[x][y] &&
+            (@array[x][y].sente == sente) &&
+            (@array[x][y].point > 0))
+          point = point + @array[x][y].point
+          number = number + 1
+        end
+        x = x + 1
+      end
+    end
+    hands.each do |piece|
+      point = point + piece.point
+    end
 
-  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)
+    if (number < 10)
+      puts "'NG: Piece#[%d] is too small." % [number] if $DEBUG
+      return false     
+    end  
+    if (sente)
+      if (point < 28)
+        puts "'NG: Black's point#[%d] is too small." % [point] if $DEBUG
+        return false 
+      end  
+    else
+      if (point < 27)
+        puts "'NG: White's point#[%d] is too small." % [point] if $DEBUG
+        return false 
+      end
     end
-    return p
+
+    puts "'Good: Piece#[%d], Point[%d]." % [number, point] if $DEBUG
+    return true
   end
 
-  def handle_one_move(str)
+  # sente is nil only if tests in test_board run
+  def handle_one_move(str, sente=nil)
     if (str =~ /^([\+\-])(\d)(\d)(\d)(\d)([A-Z]{2})/)
-      p = $1
+      sg = $1
       x0 = $2.to_i
       y0 = $3.to_i
       x1 = $4.to_i
       y1 = $5.to_i
       name = $6
     elsif (str =~ /^%KACHI/)
-      return "kachi"
+      raise ArgumentError, "sente is null", caller if sente == nil
+      if (good_kachi?(sente))
+        return :kachi_win
+      else
+        return :kachi_lose
+      end
     elsif (str =~ /^%TORYO/)
-      return "toryo"
+      return :toryo
+    else
+      return :illegal
     end
-
-    if (p == "+")
-      sente = true
+    
+    if (((x0 == 0) || (y0 == 0)) && # source is not from hand
+        ((x0 != 0) || (y0 != 0)))
+      return :illegal
+    elsif ((x1 == 0) || (y1 == 0)) # destination is out of board
+      return :illegal
+    end
+    
+    if (sg == "+")
+      sente = true if sente == nil           # deprecated
+      return :illegal unless sente == true   # black player's move must be black
       hands = @sente_hands
     else
-      sente = false
+      sente = false if sente == nil          # deprecated
+      return :illegal unless sente == false  # white player's move must be white
       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 "ootori"
-      end
-      hands.push(@array[x1][y1])
-      @array[x1][y1] = nil
-    end
+    
+    ## source check
     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
-      @array[x1][y1] = @array[x0][y0]
-      @array[x0][y0] = nil
-      if (@array[x1][y1].name != name) # promoted ?
-        return "illegal" if (@array[x1][y1].promoted_name != name) # can't promote
-        @array[x1][y1].promoted = true
-      end
+      return :illegal if (! have_piece?(hands, name))
+    elsif (! @array[x0][y0])
+      return :illegal           # no piece
+    elsif (@array[x0][y0].sente != sente)
+      return :illegal           # this is not mine
+    elsif (@array[x0][y0].name != name)
+      return :illegal if (@array[x0][y0].promoted_name != name) # can't promote
+    end
+
+    ## destination check
+    if (@array[x1][y1] &&
+        (@array[x1][y1].sente == sente)) # can't capture mine
+      return :illegal
+    elsif ((x0 == 0) && (y0 == 0) && @array[x1][y1])
+      return :illegal           # can't put on existing piece
+    end
+
+    tmp_board = Marshal.load(Marshal.dump(self))
+    return :illegal if (tmp_board.move_to(x0, y0, x1, y1, name, sente) == :illegal)
+    return :oute_kaihimore if (tmp_board.checkmated?(sente))
+    tmp_board.update_sennichite(sente)
+    os_result = tmp_board.oute_sennichite?(sente)
+    return os_result if os_result # :oute_sennichite_sente_lose or :oute_sennichite_gote_lose
+    return :sennichite if tmp_board.sennichite?(sente)
+
+    if ((x0 == 0) && (y0 == 0) && (name == "FU") && tmp_board.uchifuzume?(sente))
+      return :uchifuzume
     end
-    return "normal"             # legal move
+
+    move_to(x0, y0, x1, y1, name, sente)
+
+    update_sennichite(sente)
+    return :normal
   end
 
   def to_s
@@ -501,51 +1543,117 @@ class Board
       end
       a.push("\n")
     end
+    a.push("%s\n" % [@teban ? "+" : "-"])
     return a.join
   end
 end
 
+class GameResult
+  attr_reader :players, :black, :white
+
+  def initialize(p1, p2)
+    @players = [p1, p2]
+    if p1.sente && !p2.sente
+      @black, @white = p1, p2
+    elsif !p1.sente && p2.sente
+      @black, @white = p2, p1
+    else
+      raise "Never reached!"
+    end
+  end
+end
+
+class GameResultWin < GameResult
+  attr_reader :winner, :loser
+
+  def initialize(winner, loser)
+    super
+    @winner, @loser = winner, loser
+    @winner.last_game_win = true
+    @loser.last_game_win  = false
+  end
+
+  def to_s
+    black_name = @black.id || @black.name
+    white_name = @white.id || @white.name
+    "%s:%s" % [black_name, white_name]
+  end
+end
+
+class GameResultDraw < GameResult
+  def initialize(p1, p2)
+    super
+    p1.last_game_win = false
+    p2.last_game_win = false
+  end
+end
+
 class Game
+  @@mutex = Mutex.new
+  @@time  = 0
+
   def initialize(game_name, player0, player1)
+    @monitors = Array::new
     @game_name = game_name
-    if (@game_name =~ /:(\d+):(\d+)/)
+    if (@game_name =~ /-(\d+)-(\d+)$/)
       @total_time = $1.to_i
       @byoyomi = $2.to_i
     end
 
     if (player0.sente)
-      @sente = player0
-      @gote = player1
+      @sente, @gote = player0, player1
     else
-      @sente = player1
-      @gote = player0
+      @sente, @gote = player1, player0
     end
-    @current_player = @sente
-    @next_player = @gote
-
+    @sente.socket_buffer.clear
+    @gote.socket_buffer.clear
+    @current_player, @next_player = @sente, @gote
     @sente.game = self
-    @gote.game = self
+    @gote.game  = self
+
+    @last_move = ""
+    @current_turn = 0
 
     @sente.status = "agree_waiting"
-    @gote.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.event, @game_name, 
+                  @sente.name, @gote.name, issue_current_time)
+    @logfile = File.join(LEAGUE.dir, @id + ".csa")
 
     LEAGUE.games[@id] = self
 
+    log_message(sprintf("game created %s", @id))
 
-    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
+    @result = nil
 
     propose
   end
-  attr_accessor :game_name, :total_time, :byoyomi, :sente, :gote, :id, :board, :current_player, :next_player, :fh
+  attr_accessor :game_name, :total_time, :byoyomi, :sente, :gote, :id, :board, :current_player, :next_player, :fh, :monitors
+  attr_accessor :last_move, :current_turn
+  attr_reader   :result
+
+  def rated?
+    @sente.rated? && @gote.rated?
+  end
+
+  def turn?(player)
+    return player.status == "game" && @current_player == player
+  end
+
+  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))
@@ -554,15 +1662,16 @@ class Game
   end
 
   def kill(killer)
-    if ((@sente.status == "agree_waiting") || (@sente.status == "start_waiting"))
+    if ["agree_waiting", "start_waiting"].include?(@sente.status)
       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))
+    log_message(sprintf("game finished %s", @id))
     @fh.printf("'$END_TIME:%s\n", Time::new.strftime("%Y/%m/%d %H:%M:%S"))    
     @fh.close
 
@@ -571,61 +1680,100 @@ class Game
     @sente.status = "connected"
     @gote.status = "connected"
 
-    if (@current_player.protocol == "CSA")
+    if (@current_player.protocol == LoginCSA::PROTOCOL)
       @current_player.finish
     end
-    if (@next_player.protocol == "CSA")
+    if (@next_player.protocol == LoginCSA::PROTOCOL)
       @next_player.finish
     end
+    @monitors = Array::new
+    @sente = nil
+    @gote = nil
+    @current_player = nil
+    @next_player = nil
     LEAGUE.games.delete(@id)
   end
 
+  # class Game
   def handle_one_move(str, player)
+    unless turn?(player)
+      return false if str == :timeout
+
+      @fh.puts("'Deferred %s" % [str])
+      log_warning("Deferred a move [%s] scince it is not %s 's turn." %
+                  [str, player.name])
+      player.socket_buffer << str # always in the player's thread
+      return nil
+    end
+
     finish_flag = true
-    if (@current_player == player)
-      @end_time = Time::new
-      t = @end_time - @start_time
-      t = Least_Time_Per_Move if (t < Least_Time_Per_Move)
-      
-      move_status = nil
-      if (@current_player.mytime - t <= 0)
-        status = :timeout
-      elsif (str == :timeout)
-        return false            # time isn't expired. players aren't swapped. continue game
+    @end_time = Time::new
+    t = [(@end_time - @start_time).floor, Least_Time_Per_Move].max
+    
+    move_status = nil
+    if ((@current_player.mytime - t <= -@byoyomi) && 
+        ((@total_time > 0) || (@byoyomi > 0)))
+      status = :timeout
+    elsif (str == :timeout)
+      return false            # time isn't expired. players aren't swapped. continue game
+    else
+      @current_player.mytime -= t
+      if (@current_player.mytime < 0)
+        @current_player.mytime = 0
+      end
+
+      move_status = @board.handle_one_move(str, @sente == @current_player)
+
+      if [:illegal, :uchifuzme, :oute_kaihimore].include?(move_status)
+        @fh.printf("'ILLEGAL_MOVE(%s)\n", str)
       else
-        move_status = @board.handle_one_move(str)
-        if (move_status == "normal")
+        if [:normal, :outori, :sennichite, :oute_sennichite_sente_lose, :oute_sennichite_gote_lose].include?(move_status)
+          # Thinking time includes network traffic
           @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)
-        else
-          @fh.printf("'ILLEGAL_MOVE(%s)\n", str)
+          @last_move = sprintf("%s,T%d", str, t)
+          @current_turn += 1
         end
-      end
 
-      if (@current_player.mytime - t < @byoyomi)
-        @current_player.mytime = @byoyomi
-      else
-        @current_player.mytime = @current_player.mytime - t
+        @monitors.each do |monitor|
+          monitor.write_safe(show.gsub(/^/, "##[MONITOR][#{@id}] "))
+          monitor.write_safe(sprintf("##[MONITOR][%s] +OK\n", @id))
+        end
       end
+    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 == "ootori")
-        ootori_win()
-      end
-      (@current_player, @next_player) = [@next_player, @current_player]
-      @start_time = Time::new
-      return finish_flag
+    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_win)
+      kachi_win()
+    elsif (move_status == :kachi_lose)
+      kachi_lose()
+    elsif (move_status == :toryo)
+      toryo_lose()
+    elsif (move_status == :outori)
+      outori_win()
+    elsif (move_status == :oute_sennichite_sente_lose)
+      oute_sennichite_win_lose(@gote, @sente) # Sente is checking
+    elsif (move_status == :oute_sennichite_gote_lose)
+      oute_sennichite_win_lose(@sente, @gote) # Gote is checking
+    elsif (move_status == :sennichite)
+      sennichite_draw()
+    elsif (move_status == :uchifuzume)
+      uchifuzume_lose()
+    elsif (move_status == :oute_kaihimore)
+      oute_kaihimore_lose()
+    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
 
   def abnormal_win
@@ -633,6 +1781,14 @@ class Game
     @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.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:abnormal:%s win:%s lose\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@current_player, @next_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] %%TORYO\n", @id))
+    end
   end
 
   def abnormal_lose
@@ -640,6 +1796,46 @@ class Game
     @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.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:abnormal:%s lose:%s win\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@next_player, @current_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] %%TORYO\n", @id))
+    end
+  end
+
+  def sennichite_draw
+    @current_player.status = "connected"
+    @next_player.status = "connected"
+    @current_player.write_safe("#SENNICHITE\n#DRAW\n")
+    @next_player.write_safe("#SENNICHITE\n#DRAW\n")
+    @fh.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:sennichite:%s draw:%s draw\n", @current_player.name, @next_player.name)
+    @result = GameResultDraw.new(@current_player, @next_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] #SENNICHITE\n", @id))
+    end
+  end
+
+  def oute_sennichite_win_lose(winner, loser)
+    @current_player.status = "connected"
+    @next_player.status = "connected"
+    loser.write_safe("#OUTE_SENNICHITE\n#LOSE\n")
+    winner.write_safe("#OUTE_SENNICHITE\n#WIN\n")
+    @fh.print(@board.to_s.gsub(/^/, "\'"))
+    if loser == @current_player
+      @fh.printf("'summary:oute_sennichite:%s lose:%s win\n", @current_player.name, @next_player.name)
+    else
+      @fh.printf("'summary:oute_sennichite:%s win:%s lose\n", @current_player.name, @next_player.name)
+    end
+    @result = GameResultWin.new(winner, loser)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] #OUTE_SENNICHITE\n", @id))
+    end
   end
 
   def illegal_lose
@@ -647,6 +1843,41 @@ class Game
     @next_player.status = "connected"
     @current_player.write_safe("#ILLEGAL_MOVE\n#LOSE\n")
     @next_player.write_safe("#ILLEGAL_MOVE\n#WIN\n")
+    @fh.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:illegal move:%s lose:%s win\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@next_player, @current_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] #ILLEGAL_MOVE\n", @id))
+    end
+  end
+
+  def uchifuzume_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.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:uchifuzume:%s lose:%s win\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@next_player, @current_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] #ILLEGAL_MOVE\n", @id))
+    end
+  end
+
+  def oute_kaihimore_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.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:oute_kaihimore:%s lose:%s win\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@next_player, @current_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] #ILLEGAL_MOVE\n", @id))
+    end
   end
 
   def timeout_lose
@@ -654,6 +1885,13 @@ class Game
     @next_player.status = "connected"
     @current_player.write_safe("#TIME_UP\n#LOSE\n")
     @next_player.write_safe("#TIME_UP\n#WIN\n")
+    @fh.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:time up:%s lose:%s win\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@next_player, @current_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] #TIME_UP\n", @id))
+    end
   end
 
   def kachi_win
@@ -661,6 +1899,29 @@ class Game
     @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.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:kachi:%s win:%s lose\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@current_player, @next_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] %%KACHI\n", @id))
+    end
+  end
+
+  def kachi_lose
+    @current_player.status = "connected"
+    @next_player.status = "connected"
+    @current_player.write_safe("%KACHI\n#ILLEGAL_MOVE\n#LOSE\n")
+    @next_player.write_safe("%KACHI\n#ILLEGAL_MOVE\n#WIN\n")
+    @fh.printf("%%KACHI\n")
+    @fh.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:illegal kachi:%s lose:%s win\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@next_player, @current_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] %%KACHI\n", @id))
+    end
   end
 
   def toryo_lose
@@ -668,17 +1929,32 @@ class Game
     @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.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:toryo:%s lose:%s win\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@next_player, @current_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @monitors.each do |monitor|
+      monitor.write_safe(sprintf("##[MONITOR][%s] %%TORYO\n", @id))
+    end
   end
 
-  def ootori_win
+  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.print(@board.to_s.gsub(/^/, "\'"))
+    @fh.printf("'summary:outori:%s win:%s lose\n", @current_player.name, @next_player.name)
+    @result = GameResultWin.new(@current_player, @next_player)
+    @fh.printf("'rating:#{@result.to_s}\n") if rated?
+    @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))
+    log_message(sprintf("game started %s", @id))
     @sente.write_safe(sprintf("START:%s\n", @id))
     @gote.write_safe(sprintf("START:%s\n", @id))
     @sente.mytime = @total_time
@@ -687,40 +1963,73 @@ class Game
   end
 
   def propose
-    begin
-      @fh = open(@logfile, "w")
-      @fh.sync = true
+    @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("$EVENT:%s\n", @id)
+    @fh.puts("V2")
+    @fh.puts("N+#{@sente.name}")
+    @fh.puts("N-#{@gote.name}")
+    @fh.puts("$EVENT:#{@id}")
 
-      @sente.write_safe(propose_message("+"))
-      @gote.write_safe(propose_message("-"))
+    @sente.write_safe(propose_message("+"))
+    @gote.write_safe(propose_message("-"))
 
-      @fh.printf("$START_TIME:%s\n", Time::new.strftime("%Y/%m/%d %H:%M:%S"))
-      @fh.print <<EOM
+    now = Time::new.strftime("%Y/%m/%d %H:%M:%S")
+    @fh.puts("$START_TIME:#{now}")
+    @fh.print <<EOM
 P1-KY-KE-GI-KI-OU-KI-GI-KE-KY
-P2 * -HI *  *  *  *  * -KA *
+P2 * -HI *  *  *  *  * -KA * 
 P3-FU-FU-FU-FU-FU-FU-FU-FU-FU
-P4 *  *  *  *  *  *  *  *  *
-P5 *  *  *  *  *  *  *  *  *
-P6 *  *  *  *  *  *  *  *  *
+P4 *  *  *  *  *  *  *  *  * 
+P5 *  *  *  *  *  *  *  *  * 
+P6 *  *  *  *  *  *  *  *  * 
 P7+FU+FU+FU+FU+FU+FU+FU+FU+FU
-P8 * +KA *  *  *  *  * +HI *
+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:1.1
+Protocol_Mode:Server
+Format:Shogi 1.0
+Declaration:Jishogi 1.1
+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}
+Least_Time_Per_Move:#{Least_Time_Per_Move}
+Remaining_Time+:#{@sente.mytime}
+Remaining_Time-:#{@gote.mytime}
+Last_Move:#{@last_move}
+Current_Turn:#{@current_turn}
+END Time
+BEGIN Position
+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_Version:1.1
 Protocol_Mode:Server
 Format:Shogi 1.0
+Declaration:Jishogi 1.1
 Game_ID:#{@id}
 Name+:#{@sente.name}
 Name-:#{@gote.name}
@@ -734,15 +2043,14 @@ 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 *
+P2 * -HI *  *  *  *  * -KA * 
 P3-FU-FU-FU-FU-FU-FU-FU-FU-FU
-P4 *  *  *  *  *  *  *  *  *
-P5 *  *  *  *  *  *  *  *  *
-P6 *  *  *  *  *  *  *  *  *
+P4 *  *  *  *  *  *  *  *  * 
+P5 *  *  *  *  *  *  *  *  * 
+P6 *  *  *  *  *  *  *  *  * 
 P7+FU+FU+FU+FU+FU+FU+FU+FU+FU
-P8 * +KA *  *  *  *  * +HI *
+P8 * +KA *  *  *  *  * +HI * 
 P9+KY+KE+GI+KI+OU+KI+GI+KE+KY
 P+
 P-
@@ -752,7 +2060,24 @@ END Game_Summary
 EOM
     return str
   end
+  
+  private
+  
+  def issue_current_time
+    time = Time::new.strftime("%Y%m%d%H%M%S").to_i
+    @@mutex.synchronize do
+      while time <= @@time do
+        time += 1
+      end
+      @@time = time
+    end
+  end
 end
+end # module ShogiServer
+
+#################################################
+# MAIN
+#
 
 def usage
     print <<EOM
@@ -760,7 +2085,7 @@ 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
@@ -768,6 +2093,8 @@ DESCRIPTION
 OPTIONS
        --pid-file file
                specify filename for logging process ID
+        --daemon dir
+                run as a daemon. Log files will be put in dir.
 
 LICENSE
        this file is distributed under GPL version2 and might be compiled by Exerb
@@ -775,33 +2102,35 @@ LICENSE
 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_warning(str)
-  printf("%s message: %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])
   parser.quiet = true
   begin
     parser.each_option do |name, arg|
@@ -815,45 +2144,74 @@ def parse_command_line
   return options
 end
 
-LEAGUE = League::new
-
-def good_game_name?(str)
-  if ((str =~ /^(.+):\d+:\d+$/) &&
-      (good_identifier?($1)))
-    return true
-  else
-    return false
-  end
-end
-
-def good_identifier?(str)
-  if ((str =~ /\A[\w\d_@\-\.]+\z/) &&
-      (str.length < Max_Identifier_Length))
-    return true
-  else
-    return false
+def write_pid_file(file)
+  open(file, "w") do |fh|
+    fh.puts "#{$$}"
   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
+def mutex_watchdog(mutex, sec)
+  while true
+    begin
+      timeout(sec) do
+        begin
+          mutex.lock
+        ensure
+          mutex.unlock
+        end
+      end
+      sleep(sec)
+    rescue TimeoutError
+      log_error("mutex watchdog timeout")
+      exit(1)
+    end
   end
 end
 
-def  write_pid_file(file)
-  open(file, "w") do |fh|
-    fh.print Process::pid, "\n"
-  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 main
+
   $mutex = Mutex::new
+  Thread::start do
+    Thread.pass
+    mutex_watchdog($mutex, 10)
+  end
+
   $options = parse_command_line
   if (ARGV.length != 2)
     usage
@@ -863,69 +2221,72 @@ def main
   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 = WEBrick::Log.new(log_file) # thread safe
+
+  LEAGUE.dir = dir || File.dirname(__FILE__)
+  LEAGUE.setup_players_database
+
+  config = {}
+  config[:Port]       = port
+  config[:ServerType] = WEBrick::Daemon if $options["daemon"]
+  config[:Logger]     = $logger
+  if $options["pid-file"]
+    pid_file = File.expand_path($options["pid-file"])
+    config[:StartCallback] = Proc.new do
+      write_pid_file(pid_file)
+    end
+    config[:StopCallback] = Proc.new do
+      FileUtils.rm(pid_file, :force => true)
+    end
+  end
 
-  Thread.abort_on_exception = true
+  server = WEBrick::GenericServer.new(config)
+  ["INT", "TERM"].each do |signal| 
+    trap(signal) do
+      LEAGUE.shutdown
+      server.shutdown
+    end
+  end
+  $stderr.puts("server started as a deamon [Revision: #{ShogiServer::Revision}]") if $options["daemon"] 
+  log_message("server started [Revision: #{ShogiServer::Revision}]")
 
-  server = TCPserver.open(port)
-  log_message("server started")
+  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
-          $mutex.lock
-          Thread::kill(Thread::current) if (! str) # disconnected
-          str =~ /([\r\n]*)$/
-          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::kill(Thread::current)
-              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::kill(Thread::current)
-      end
       log_message(sprintf("user %s login", player.name))
-      player.run
+      login.process
+      player.run(login.csa_1st_str) # loop
       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__)
+  STDOUT.sync = true
+  STDERR.sync = true
+  TCPSocket.do_not_reverse_lookup = true
+  Thread.abort_on_exception = $DEBUG ? true : false
+
+  LEAGUE = ShogiServer::League::new
   main
 end