##############################################################################
#                            AnthChecker v1.38                               #
#                            by )°DoE°(-AnthraX                              #
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1) What is it?
--------------

AnthChecker is an advanced unrealscript-based cross-platform packagechecker.

|| Please take a few minutes to read this document, it will spare you and me a lot
|| of trouble.

2) What does it do?
-------------------

AnthChecker will validate every client (including clients that run Linux/MacOS)
after they enter the server. Depending on the server's settings AnthChecker will:
    * Perform selfchecks to prevent clients from redirecting/bypassing the checking routines
    * Perform CRC (Type 1) checks on files that should be identical on the server and on the client (files like UTPure.u)
    * Perform CRC (Type 2) checks to identify the client's skintextures and kick if they're hacked
    * Perform MD5 checks to identify the client's renderdevice and kick if it's hacked
    * Perform MD5 checks to identify the client's libraries and kick if they're hacked
    * Scan for disallowed files
    
As of v1.38, AnthChecker will also protect your server from the malformed string
servercrasher. This protection requires native code. It has been tested on all
public version of UT (both windows and linux ones) but there might still be some
stability issues (especially on linux).

3) Installation
---------------

To install AnthChecker on your server:

1. Unzip the contents of this zip package in your server's system folder. 

2. Open your server's unrealtournament.ini file and find the line that reads "[Engine.GameEngine]".

3. Add these lines under it:

ServerActors=AnthCheckerS_v138.ACActor
ServerPackages=AnthCheckerC_v138
    
4. Move to the end of your UT.ini file and add these lines 
   (you can find the explanation of the settings under 4) Settings):    
    
[AnthCheckerS_v138.ACActor]
bEnablePackageChecker=true
bEnableNetFix=true
bKickUnknownRenderer=true
bKickUnknownLibrary=true
bKickUnknownSound=true
bKickUnknownSkin=true
bBroadCastJoin=true
bBroadCastIPs=false
bExternalNotify=false
bSelfCheck=true
bPureCheck=true
bEUTCheck=false
bSkinCheck=true
bSoundCheck=true
bShowConsoleMessages=true
TimeOut=30
CheckDelay=3.0
bReportCheats=True
bReceiveUpdates=True
Packages[0]=
Packages[1]=
Packages[2]=
Packages[3]=
Packages[4]=
Packages[5]=
Packages[6]=
Packages[7]=
Packages[8]=
Packages[9]=
bExternalLogs=true
LogPrefix=
LogPath=
ACLinkMode=2
ACDelay=5
    
5. Restart your server

4) Settings
-----------

You can easily change the AnthChecker settings by opening your server's ini file and changing
the lines you added at the end.

    bEnablePackageChecker: set to false if you want to disable the anthchecker packagechecking functionality
    bEnableNetFix        : set to false if you don't want to protect your server from the malformed string servercrasher
    bKickUnknownRenderer : set to false if you don't want to kick clients with an unknown renderdevice
    bKickUnknownLibrary  : set to false if you don't want to kick clients with unknown libraries
    bKickUnknownSound    : set to false if you don't want to kick clients with unknown soundpackages
    bKickUnknownSkin     : set to false if you don't want to kick clients with unknown skinpackages
    bBroadCastJoin       : set to false if you don't want to broadcast every client's nickname/renderdevice/operating system after the validation
    bBroadCastIPs        : set to true if you want to add the client's IP's to the bBroadCastJoin messages
    bExternalNotify      : set to true if you want AnthChecker to send playerjoin reports to other mods (requires compatible mod)
    bSelfCheck           : set to false if you don't want to perform a crc check on the anthchecker client package
    bPureCheck           : set to false if you don't want to perform a crc check on the utpure package
    bEUTCheck            : set to true if you want to perform a crc check on the EUT package
    bSkinCheck           : set to false if you don't want to perform crc checks on the skintextures
    bSoundCheck          : set to false if you don't want to perform a crc check on the female2voice package
    bShowConsoleMessages : set to false if you don't want to display what's going on in the client's console
    bReceiveUpdates      : set to false if you don't want to receive info about new renderdevices from the AnthChecker masterserver
    bReportCheats        : set to false if you don't want AnthChecker to report cheating attempts to the AnthChecker masterserver
    TimeOut              : ammount of time the client gets to finish the checks (in seconds)
    CheckDelay           : ammount of time between the playerjoin and the start of the checks (in seconds)
    Packages[x]          : you can manually add files to crc (type 1) check here
                           syntax: <file extension>,<filename>,<packagepercent (1-255)> (*)
    bExternalLogs        : set to false if you don't want to log AnthChecker's kicks to external files
    LogPrefix            : Prefix of the external logfiles (default: [AC])
    LogPath              : The path in which the external logfiles are stored (default: ../Logs/)
    ACLinkMode           : set to 1 if you want to delay the updatescheck
    ACDelay              : ammount of time before the updatescheck begins (in seconds, only needed if ACLinkMode=1)
 
 !! Important !!: Due to the limitations of the unreal engine, you're not advised to manually add files.
 		  If you do decide to do so, use a small packagepercent, UT will usually crash after crc checking
 		  10Mb of data.
    			  
 (*) if for example you want to perform a crc type 1 check on the 10 first bytes of every 255-byte block of CTF-Gauntlet.unr, 
 you'd have to add "unr,CTF-Gauntlet,10" (without the quotes)
 
5) History
----------

v1.38 (Public):
    * [Added] Malformed string servercrasher fix
    * [Added] OS Checking bypass kick (kicktype 10)
    * [Changed] Rewrote a part of the HTTP client for better stability

v1.37 (Public):
    * [Changed] Removed an instruction in the HTTP Client that might have caused crashes on some linux servers
    * [Added] Options ACLinkMode and ACDelay. These options can be used by those who experience problems with the auto-updates.

v1.36 (Internal):
    * [Fixed] Bug that prevented the manual package adding option from working.

v1.35 (Internal):
    * [Changed] Disabled the cachecleaner for MacOS. This will resolve type 3 kicks on MacOS 9.x.

v1.34 (Public):
    * [Fixed] Security flaw in the clientcode. Could have been used to redirect CRC Checks.
    * [Fixed] Timeout issues caused by a typo in the serverside code.
    * [Added] Option bKickUnknownSound
    * [Added] Option bKickUnknownSkin

v1.33 (Public):
    * [Changed] Minor security update in the clientcode

v1.32 (Internal):
    * [Changed] Improved the active renderdevice detection (should resolve some type 1 kicks)
    * [Changed] Some improvements in the actor code
    * [Added] Hashes for a lot of libraries (UTCacheCleaner, UTWinAmp, UTDCv17b, OldUnreal MediaPatches, UT v436 Linux, Editor binaries)
    * [Added] Posibility to broadcast playerjoins to other mods (bExternalNotify option)
    * [Added] bEUTCheck option
    * [Added] bExternalLogs option
    * [Fixed] Bug in the HTTP updating code
    * [Fixed] Bug that caused timeouts if bGUIDCheck was still in the ini file

v1.31 (Public):
    * [Fixed] Critical bug in the packet handler that caused random timeouts for some players

v1.30 (Public):
    * [Added] Packet handler that allows the client to send long strings to the server without making it crash
    * [Added] Extra selfchecks to prevent CRC redirection
    * [Added] New hashes
    * [Added] Option CheckDelay to specify the number of seconds between the playerjoin and the start of the checks
    * [Added] Checks to detect illegal libraries loaded by the client, some cheatcoders use this exploit to bypass UTDC
    * [Added] Option bKickUnknownLibrary
    * [Added] Server receives updated library whitelists from the masterserver (only if bReceiveUpdates is set to true)
    * [Changed] Option bKickUnknown renamed to bKickUnknownRenderer
    * [Changed] AC no longer uses a mutator for client-server communication
    * [Changed] Removed Type 8 (GUID) kick
    * [Changed] Clients can see which files are being checked by AnthChecker
    * [Changed] Rewrote some routines for better performance
    * [Changed] Forced the client to regenerate GUID if it's not valid
    * [Changed] New cache cleaner code for mac/linux -> no more reconnect window
    * [Fixed] Type 1 kicks caused by a bug in the pathsparser
    * [Fixed] Some false type 7 (disallowed files) kicks
    * [Fixed] MacOS issues
 
v1.29 (Public):
    * [Fixed] Some false GUID kicks
    * [Added] New renderhashes
 
v1.28 (Internal):
    * [Changed] Rewrote some laggy core routines
    * [Changed] bSkinCheck now picks 2 random skins to check instead of 7

v1.27 (Public):
    * [Fixed] Players getting kicktype 8 because of the slow connection between the UT server and the masterserver
    * [Fixed] Illegal GUID's for linux clients with v451
    * [Changed] Linux/Mac Cachecleaner can move multiple files at one time

v1.26 (Internal):
    * [Added] Routine to find cached files even when the cache.ini file is corrupted
    * [Added] Option bBroadCastIPs
    * [Added] AnthChecker version gets logged to the external logs
    * [Changed] Players get to see the URL of my forum + AnthChecker version/build when they get kicked

v1.25 (Internal) :
    * [Added] Extra GUID check
 
v1.24 (Internal) :
    * [Fixed] bug in masterserver encryption
    * [Fixed] bug in the skinidentification (players with unknown skins were allowed to enter the server)
    * [Fixed] Linux/Mac timeouts
    * [Fixed] Critical bug that broke every mutator loaded after AnthChecker (this also affected SmartCTF/BDBMapVote/3dfxmapvote/...)
    * [Fixed] bug that caused a lot of type 1 kicks (failed to generate checksum) for cached files (only happened for clients with corrupted cache.ini files)
    * [Added] options LogPath and LogPrefix for the external logs
    * [Added] Support for clients that have multiple system/textures/... folders
    * [Added] Blocked "EnhancedSkins"
    * [Added] New hashes for several renderers
    * [Added] GUID verification (so far, this is only used for the masterserver)
    * [Added] AnthChecker automaticly adds itself to the serverpackages list if needed
    * [Changed] names of the Ref1 skins to Ref 1/Warez
 
v1.23 (Public) :
    * First public release

6) Thanks to
------------
 
- Azazel & UnrealAdmin       : for hosting the UTGL masterserver and my forum
- Nuffy & Magma              : for providing gamearena.co.uk betatest servers
- Cratos                     : for providing renderdevices and a betatest server
- TNSe                       : for advice/ideas/help
- Just_Me                    : for advice/ideas/help
- Sardukar                   : for advice/ideas/help
- Obsidian & Rush & Neopythe : for linux betatesting
- ZorroTheFox & The_Dave     : for MacOS betatesting
- Petr Jelinek	             : for the original MD5 code
- Shambler                   : for helping me with the native code, especially the DLO hooking

 
7) Feedback & Support
---------------------

http://www.unrealadmin.org/forums/forumdisplay.php?f=176
 
 
 