###
# Copyright (c) 2012, Alfie "Azelphur" Day
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

###

import supybot.utils as utils
from supybot.commands import *
import supybot.plugins as plugins
import supybot.ircutils as ircutils
import supybot.callbacks as callbacks
import urllib2, socket

LOGIN_URL = 'https://login.minecraft.net/?user=&password='

SESSION_URL = 'http://session.minecraft.net/game/joinserver.jsp'

MINECRAFT_ADDRESS = 'Minecraft.azelphur.com'
MINECRAFT_PORT = 25567

class Minecraft(callbacks.Plugin):
    """Add the help for "@plugin help Minecraft" here
    This should describe *how* to use this plugin."""
    threaded = True
    def mcstatus(self, irc, msg, args):
        login = 'Online'
        session = 'Online'
        server = 'Online'

        try:
            u = urllib2.urlopen(LOGIN_URL)
            if u.read() != 'Bad login':
                login = 'Behaving oddly'
        except urllib2.HTTPError, code:
            login = 'Offline (HTTP Code %d)' % (code)
        except urllib2.URLError, code
            login = 'Offline (Error %d, %s)' % (code[0], code[1])

        try:
            u = urllib2.urlopen(SESSION_URL)
            if u.read() != 'Bad login':
                session = 'Behaving oddly'
        except urllib2.HTTPError, code:
            session = 'Offline (HTTP Code %d)' % (code)
        except urllib2.URLError, code
            session = 'Offline (Error %d, %s)' % (code[0], code[1])

        try:
            #Set up our socket
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            s.connect((MINECRAFT_ADDRESS, MINECRAFT_PORT))

            #Send 0xFE: Server list ping
            s.send('\xfe')

            #Read as much data as we can (max packet size: 241 bytes)
            d = s.recv(256)
            s.close()

            #Check we've got a 0xFF Disconnect
            assert d[0] == '\xff'

            #Remove the packet ident (0xFF) and the short containing the length of the string
            #Decode UCS-2 string
            #Split into list
            d = d[3:].decode('utf-16be').split(u'\xa7')
            server = 'Online, %d / %d' % (int(d[1]), int(d[2]))
        except socket.error:
            server = 'Offline'

        irc.reply("Login: %s, Session: %s, Our server: %s" % (login, session, server))

Class = Minecraft


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