-listen_port = 8333
+# Peach CGT -- Card Game Table simulator
+# Copyright (C) 2011 Jason Woofenden
+#
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+listen_port = process.env.PORT ? process.env.app_port ? 9988
sys = require 'sys'
fs = require 'fs'
http = require 'http'
+querystring = require 'querystring'
url = require 'url'
less = require 'less'
coffee = require 'coffee-script'
+model = require './common.coffee'
+
+games = {}
+max_concurrent_games = 50
+max_game_idle = 3 * 60 * 60 * 1000 # three hours (in miliseconds)
+
+# timeout function with args in convenient order
+timeout = (ms, func) -> setTimeout func, ms
+interval = (ms, func) -> setInterval func, ms
+
+now_s = ->
+ d = new Date()
+ return d.getTime()
+
+expire_old_games = ->
+ count = 0
+ for slug, g of games
+ count += 1
+ oldest_slug = slug
+ oldest_seen = g.last_seen
+
+ return unless count > 0
+
+ # check all the games
+ # track oldest
+ # delete old ones
+ too_old = now_s() - max_game_idle
+ kills = []
+ for slug, g of games
+ if g.last_seen < oldest_seen
+ oldest_seen = g.last_seen
+ oldest_slug = slug
+ if g.last_seen < too_old
+ kills.push slug
+ if count > max_concurrent_games and kills.length is 0
+ console.log "hit max_concurrent_games, destroying oldest"
+ kills.push oldest_slug
+ for slug in kills
+ console.log "killing game #{slug}"
+ delete games[slug]
css_handler = (args, out, request, url_parts) ->
fs.readFile 'style.less', 'utf8', (err, data) ->
out.end css
js_handler = (args, out, request, url_parts) ->
- fs.readFile 'client.coffee', 'utf8', (err, data) ->
+ convert = false
+ basename = url_parts.pathname.substr 1, (url_parts.pathname.length - 4)
+ if basename is 'client'
+ filename = 'client.coffee'
+ convert = true
+ else if basename is 'common'
+ filename = 'common.coffee'
+ convert = true
+ else if basename is 'cs_cards'
+ filename = 'cs_cards.js'
+ convert = false
+ else
+ error = "Unknown js basename: #{basename}"
+ console.log error
+ out.end(error)
+ return
+
+ fs.readFile filename, 'utf8', (err, data) ->
if err
- return out.end 'Server failed to read client.coffee'
- out.end coffee.compile data
+ return out.end "Server failed to read #{filename}"
+ if convert
+ try
+ converted = coffee.compile data
+ catch e
+ out.end "alert(\"server faild to compile #{filename}\");"
+ out.end converted
+ else
+ out.end data
html_handler = (args, out, request, url_parts) ->
fs.readFile 'index.html', 'utf8', (err, data) ->
if err
- return out.end 'Server failed to read index.html'
+ return out.end "Server failed to read index.html: #{err}"
out.end data
clean_pathname_regex = new RegExp('[^a-zA-Z/_.-]')
str = str.replace clean_pathname_regex, '_'
str = str.replace clean_pathname_regex2, '/_'
return str.replace clean_pathname_regex3, '_'
-
-# serve javascript files from within /usr/share/javascript
-javascript_handler = (args, out, request, url_parts) ->
- filename = clean_pathname "/usr/share/#{url_parts.pathname}"
+
+# serve javascript files from within external/
+external_javascript_handler = (args, out, request, url_parts) ->
+ filename = clean_pathname "external/#{url_parts.pathname.substr 10}"
fs.readFile filename, 'utf8', (err, data) ->
if err
out.writeHead 404
return out.end "Server failed to read #{filename}"
out.writeHead 200, 'Content-Type': 'text/javascript'
out.end data
-
+
+
+get_handler = (args, out, request, url_parts) ->
+ unless args.game?.length
+ out.writeHead 404, "Content-Type": 'text/plain'
+ out.end 'Missing (or empty) "game" argument'
+ return
+
+ unless args.agent is 'p1' or args.agent is 'p2'
+ out.writeHead 404, "Content-Type": 'text/plain'
+ out.end '"agent" argument must be set to p1 or p2'
+ return
+
+ unless games[args.game]?
+ out.writeHead 404, "Content-Type": 'text/plain'
+ out.end 'Game not found'
+ return
+
+ game = games[args.game]
+ out.writeHead 200, 'Content-Type': 'text/javascript'
+
+ waiter = games["#{args.agent}_waiter"]
+ if waiter?
+ waiter.end '[]'
+
+ game["#{args.agent}_waiter"] = out
+
+ answer_soon game # in case there's something queued already
+
+set_handler = (args, out, request, url_parts) ->
+ unless args.game?.length
+ out.writeHead 404, "Content-Type": 'text/plain'
+ out.end '{"status":1,"text_status":"Missing (or empty) game argument"}'
+ return
+
+ unless args.agent is 'p1' or args.agent is 'p2'
+ out.writeHead 404, "Content-Type": 'text/plain'
+ out.end '{"status":2,"text_status":"agent argument must be set to p1 or p2"}'
+ return
+
+ unless args.messages?
+ out.writeHead 404, "Content-Type": 'text/plain'
+ out.end '{"status":3,"text_status":"messages argument must be set"}'
+ return
+
+ try
+ messages = JSON.parse args.messages
+ catch e
+ out.writeHead 400, "Content-Type": 'text/plain'
+ out.end '{"status":4,"text_status":"Invalid JSON"}'
+ return
+
+ # special handling of 'new_game' api, because for this one we don't have a
+ # game object to pass the message to
+ if messages?[0]?[0] is 'new_game'
+ message = messages.shift()
+ slug = message[1]
+ if games[slug]?
+ out.writeHead 403, "Content-Type": 'text/plain'
+ out.end '{"status":6,"text_status":"Game already exists"}'
+ return
+ game = games[slug] = new_game slug, 'server'
+ game.last_seen = now_s()
+ console.log "new game: #{slug}"
+ expire_old_games()
+
+ unless games[args.game]?
+ out.writeHead 404, "Content-Type": 'text/plain'
+ out.end '{"status":5,"text_status":"Game not found"}'
+ return
+
+ game = games[args.game]
+
+ game.last_seen = now_s()
+
+ game.process_messages messages
+
+ out.writeHead 200, "Content-Type": 'text/plain'
+ out.end '{"status":0,"text_status":"Success"}'
+
+# don't call this directly, call answer_soon instead
+answer_now = (game) ->
+ if game.p1_waiter and game.p1_queue.length
+ waiter = game.p1_waiter
+ queue = game.p1_queue
+ game.p1_waiter = false
+ game.p1_queue = []
+ waiter.end JSON.stringify queue
+ if game.p2_waiter and game.p2_queue.length
+ waiter = game.p2_waiter
+ queue = game.p2_queue
+ game.p2_waiter = false
+ game.p2_queue = []
+ waiter.end JSON.stringify queue
+
+# this marks a game as "dirty" and makes sure there's exactly one timeout
+# that'll respond to any clients that are waiting, and now have messages.
+answer_soon = (game) ->
+ unless game.replier_id
+ game.replier_id = timeout 1, ->
+ delete game.replier_id
+ answer_now game
+
+forward_events = (message...) ->
+ unless message[1] is 'p1'
+ @p1_queue.push message
+ answer_soon this
+ unless message[1] is 'p2'
+ @p2_queue.push message
+ answer_soon this
+
+new_game = (slug) ->
+ game = games[slug] = model.new slug, 'server'
+ game.p1_waiter = false
+ game.p2_waiter = false
+ game.p1_queue = []
+ game.p2_queue = []
+
+ game.on 'move', (agent, card, x, y, z, pile) ->
+ forward_events.call this, 'move', agent, card, x, y, z, pile
+ game.on 'mark', (agent, card, state) ->
+ forward_events.call this, 'mark', agent, card, state
+ game.on 'flip', (agent, card, state) ->
+ forward_events.call this, 'flip', agent, card, state
+ game.on 'new_cards', (agent, cards) ->
+ # server assigns card numbers, and tells both clients
+ # (unlike all other api calls, sending agent expects to get this one back)
+ forward_events.call this, 'new_cards', 'server', cards
+ game.on 'set_cards', (agent, cards) ->
+ forward_events.call this, 'set_cards', agent, cards
+ game.on 'send_state', (agent) ->
+ timeout 10, =>
+ if agent is 'p1'
+ @p1_queue.push ['set_cards', 'server', @cards]
+ answer_soon this
+ if agent is 'p2'
+ @p2_queue.push ['set_cards', 'server', @cards]
+ answer_soon this
+
+ return game
+
+long_poll_keepalive = ->
+ for slug, g of games
+ if g.p1_waiter? and g.p1_waiter isnt false
+ g.p1_waiter.write '\n'
+ if g.p2_waiter? and g.p2_waiter isnt false
+ g.p2_waiter.write '\n'
+
+interval 12000, long_poll_keepalive
http_server = http.createServer (req, res) ->
url_parts = url.parse req.url, true
rel_path = url_parts.pathname.substr 1
- if rel_path.substr(0, 11) is 'javascript/'
- return javascript_handler url_parts.query, res, req, url_parts
+ if rel_path.substr(0, 9) is 'external/'
+ return external_javascript_handler url_parts.query, res, req, url_parts
else if rel_path.substr(rel_path.length - 4) is '.css'
res.writeHead 200, 'Content-Type': 'text/css'
return css_handler url_parts.query, res, req, url_parts
- else if rel_path.substr rel_path.length - 3 is '.js'
+ else if rel_path.substr(rel_path.length - 3) is '.js'
res.writeHead 200, 'Content-Type': 'text/javascript'
return js_handler url_parts.query, res, req, url_parts
-
+ else if rel_path is 'set'
+ data = ''
+ req.on 'data', (chunk) ->
+ data += chunk
+ req.on 'end', ->
+ query = url_parts.query
+ post_args = querystring.parse data
+ for key, parg of post_args
+ query[key] = parg
+ return set_handler query, res, req, url_parts
+ return
+ else if rel_path is 'get'
+ return get_handler url_parts.query, res, req, url_parts
+ else if rel_path.substr(rel_path.length - 4) is '.ico'
+ res.writeHead 404
+ return res.end()
+
return html_handler url_parts.query, res, req, url_parts
-http_server.listen listen_port, "127.0.0.1"
+################## INIT ####################
+# make sure the current working directory is correct
+process.chdir __dirname
+
+setInterval expire_old_games, 2 * 60 * 1000 # check every 2 minutes for expired games
+
+http_server.listen listen_port
console.log "Server running at http://127.0.0.1:#{listen_port}/"
Got questions, comments, patches, etc.? Contact Jason Woofenden