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#Quick and dirty workaround to block people from using the channel overflow client disconnect exploit
#Original author: Lobster Man
#Contact: AIM - lobsterman246, Steam - lobster_man246
#Websites: www.f10community.com & www.newslobster.com
#Check out my css surf server at f10.ath.cx:27015 :)
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#PLEASE NOTE: The code below is python and is for use with eventscripts 2.0+, this is NOT an eventscripts classic script
#To use this script, make a folder in your \cstrike\addons\eventscripts directory called block_crash
#then inside of that new folder (\cstrike\addons\eventscripts\block_crash), move this entire document and make sure it's called block_crash.py (you can remove the comments if you like :P )
#To use it, simply add "es_load block_crash" to your autoexec.cfg or whatever method you use to load scripts

#IMPORTANT!!!
#This has been tested by me on windows only (server 2003), and in my experience, you must be loading mani via metamod (www.sourcemm.net) for this to work, and NOT by a .vdf file
#I personally have not tested this on linux, but after talking with several other people, it appears that you may not need to use metamod for this to work on linux
#also, see the comments below if you wish to change kicks to bans: line 51

import es
import gamethread

users = {}

def load():
	#hooking the commands, not sure if ma_timeleft and ma_nextmap are actually necessary
	es.regclientcmd('timeleft', 'block_crash/watch_console', 'test to block channel overflow exploit')
	es.regclientcmd('ma_timeleft', 'block_crash/watch_console', 'test to block channel overflow exploit')
	es.regclientcmd('nextmap', 'block_crash/watch_console', 'test to block channel overflow exploit')
	es.regclientcmd('ma_nextmap', 'block_crash/watch_console', 'test to block channel overflow exploit')
	es.regclientcmd('listmaps', 'block_crash/watch_console', 'test to block channel overflow exploit')


def player_connect(event_var):
	#add users to the dictionary on connect
	users[event_var['userid']] = 0
	
def watch_console():
	userid = str(es.getcmduserid())
	
	#just some debugging commands for diagnostics, you can uncomment these to see who executes one of the above commands (it will only show their session id)
	#es.msg('%s called a restricted command' % userid)
	#es.msg('%i is the count' % users[userid])
	
	#each time a user calls one of the above commands, increment a count in the users dictionary
	users[userid] += 1
	
	#if they try to call it too often, boot them and print a warning message
	if users[userid] >= 5:
	
		#*******************************************************
		#The next line is the kick functionality, you can also change this to 'banid 0 %s kick' to ban
		es.ServerCommand('kickid %s pwnd n00b' % userid)
		#*******************************************************
		#you may also want to change kicked to banned if you modify functionality at all
		es.msg('user %s was kicked for attempting to use the channel overflow exploit' % es.getplayername(userid))
	
	#wait 5 secs then reset their count - you can change this if you want but players shouldn't need to execute one of the above commands more than once every 5 seconds
	gamethread.delayed(5, reset, userid)
	
def reset(sessionid):
	users[sessionid] = 0

#cleanup below here	
def player_disconnect(event_var):
	del users[event_var['userid']]
	
def unload():
	es.unregclientcmd('timeleft')
	es.unregclientcmd('ma_timeleft')
	es.unregclientcmd('nextmap')
	es.unregclientcmd('ma_nextmap')
	es.unregclientcmd('listmaps')