[Silvers]

About:

• This plugin fixes servers with too many ConVars, which causes a buffer overflow error in server console and the overflowed ConVars to use their default value instead of the one specified.
• This should also fix commands which failed to be executed caused by the same buffer overflow.
• Note: If your server is hibernating the fix will happen on the next frame when it wakes.
• Initial thread and plugin version here.
• This fixes "Cbuf_AddText: buffer overflow" error messages.

Related Plugins:

• Cvar Configs Updater - Good for updating convar configs to add new convars, and remove unused ones
• ConVars Anomaly Fixer - Good for checking and testing convars and configs for errors.

Supported Games:

• CS:S
• CSGO
• L4D1
• L4D2
• OrangeBox [GoldenEye etc]
• Team Fortress 2
• Request support if your game suffers from this bug.

Thanks:

• Peace-Maker (for DHooks Dev Preview and helping script this plugin).
• Dr!fter (for initially creating DHooks extension).
• Dragokas (optimizations , helping me understand the .cpp files and functions).
• Lux (various scripting advice and helping figure out stuff).
• Timocop (L4D1 Linux binary and testing).

ConVar Testing:

Spoiler

To create 5000 cvars for testing if your server requires fixing, or to check the fix has worked:

• Change DEBUGGING 0 to DEBUGGING 1 in this plugins source.
• Recompile and install.
• Change map or restart the server so the cvar config is auto-generated.
• Edit \cfg\sourcemod\sm_cvar_test.cfg and replace all "0" with "1".
• Change map so the server can attempt to read the changed cvar values.
• Run the "sm_cvar_test" command to test.

ConVars:

PHP Code:

// Command and ConVar - Buffer Overflow Fixer plugin version.
command_buffer_version 


Changes:

2.8b (11-Feb-2023)
    - Updated GameData signature for CS:GO. Thanks to "foxsay" for reporting.

2.8 (19-Jan-2022)
    - Fixed leaking handles when triggered to fix buffer issues.

2.7 (06-Dec-2021)
    - Fixed the last version breaking plugin functionality. Thanks to "sorallll" for reporting.

2.6 (27-Nov-2021)
    - Fixed "Failed to grow array" error. Thanks to "azureblue" for reporting.

2.5a (16-Jun-2021)
    - L4D2: Compatibility update for "2.2.1.3" update. Thanks to "ProjectSky" for reporting and "bedildewo" for fixing.
    - GameData .txt file and plugin updated.

2.5 (03-May-2021)
    - Fixed errors when inputting a string with format specifiers. Thanks to "sorallll" for reporting and "Dragokas" for fix.

2.4a (19-May-2020)
    - Added support for Team Fortress 2. Only GameData changed.

2.4 (10-May-2020)
    - Added better error log message when gamedata file is missing.
    - Various changes to tidy up code.

2.3 (03-Feb-2020)
    - Fixed debugging using the wrong methodmap. Thanks to "Caaine" for reporting.

2.2 (03-Feb-2020) by Dragokas
    - Added delete to an unused handle.
    - Changed "char" to "static char" in "OnNextFrame" to optimize performance.

2.1 (07-Aug-2018)
    - Added support for GoldenEye and other games using the OrangeBox engine on Windows and Linux.
    - Added support for Left4Dead2 Windows.
    - Gamedata .txt and plugin updated.

2.0.1 (02-Aug-2018)
    - Turned off debugging.

2.0 (02-Aug-2018)
    - Now fixes all ConVars from being set to incorrect values.
    - Supports CSGO (win/nix), L4D1 (win/nix) and L4D2 (nix).
    - Other games with issues please request support.

1.0 (27-Jun-2018)
    - Initial release.

Requirements:

• SourceMod 1.11 or newer
• -OR-
• Extension: DHooks (Experimental dynamic detour support) and compile plugin manually.

1. Click "Get Plugin" and put the .smx file into your servers \addons\sourcemod\plugins\ folder.
2. Download the .txt gamedata file and put into your servers \addons\sourcemod\gamedata\ folder.
3. You must restart the server.

[mug1wara]

Good job you guys, definately see this useful for lots of serverowners

[Psyk0tik]

Nice one dude!

[Naomi]

Yay! finally can fix the spam for L4D2

[ricksfishin]

Awesome Silvers Thank you.

[jking]

Win ver ETA?

[Silvers]

Originally Posted by jking Win ver ETA? :bacon!: :bacon!:

Not required from my testing. But added.

2.1 (07-Aug-2018) - Added support for GoldenEye and other games using the OrangeBox engine on Windows and Linux. - Added support for Left4Dead2 Windows - not required from my testing on a Dedicated Server. - Gamedata .txt and plugin updated.

All OrangeBox games seem to suffer from this bug, plugin should now support them all.

Edit: Theres a new version of DHooks which no longer crashes the server when reloading a plugin using the "functions" gamedata section. I suggest everyone update to this goodness.

Enjoy

[Spirit_12]

Something that was needed for so long. Amazing work as always.

Line: 108

PHP Code:

if( cvar != INVALID_HANDLE && GetConVarInt(cvar) != 1 ) cv++; 


PHP Code:

if( cvar != INVALID_HANDLE && cvar.IntValue != 1 ) cv++; 


Just sticking to object oriented API.

[tretray]

Errors:

command_buffer.smx ([ANY] Command and ConVar - Buffer Overflow Fixer): Native "DHookCreateFromConf" was not found

Other plugins that require Dhooks work. I do have command_buffer.games.txt in my sourcemod/gamedata folder.

[Silvers]

Which game, OS?