1.7.2 Beta Build crashes due to illegal characters in chat

Hello,

My server is crashing on average ~ 5 times per day.
This is the last line of the log every single time it crashes:

21.12 13:40:32 [Disconnect] User [13:40:32 INFO]: marcusvilla1 has disconnected, reason: Illegal characters in chat

Banning the player eventually stopped the crashes but I'm aware that other players could do this.
This could be a serious bug, but I couldn't find any threads that have problems related to this.

 

what server version do you running?
post your server log please www.pastebin.com
post a list of your plugins please.

 

I'm using a bunch of custom created plugins, but there are all updated to 1.7.2 and run stable.

List of all plugins:
WorldBorder, BeaconDrop, MagicBox, Buycraft, rsCommand, RedstoneCombatLogger, rsHacker, Multiverse-Core, rsAuth, Shopkeepers, CompatNoCheatPlus, ItemRepair, Features, GameModeControl, OpenInv, ProtocolLib, Votifier, MobArena, CommandQueue, NoCheatPlus, WorldEdit, rsEnderchest, Multiverse-Inventories, OnlineUsers, DBPassword, PermissionsEx, Reloader, HealthBar, LogBlock, WorldGuard, boosCooldowns, MineBackup, Broadcaster, RedstoneWatch, rsJoinkit, rsPlayerData, StaffLogger, rsGlitch, rsItemSystem, Multiverse-Portals, rsChristmas, ColoredTags, WGCustomFlags, Skript, rsParkourChest, rsBirthday, Essentials, Factions, rsVoting, WGPushBack, rsChat, EssentialsSpawn


Server log

http://pastebin.com/eYFd6MMe

Hello,

Last night it crashed again, and it was the same problem again.

[23:20:47] [Server thread/INFO]: a7med_111 lost connection: Illegal characters in chat
[23:20:47] [Server thread/INFO]: [rsPlayerData] Player a7med_111 played for 4 minutes & 38 seconds
Whenever a player sends illegal characters in chat, the server will crash. These are the last 2 lines of the log. While this happened I was running the latest Bukkit beta #2974

 

Digging around some NMS stuff (by decompiling and using the github repo) and I've found this. I'm not sure if this helps or not but there's a class called SharedConstants and it checks whether or not there's any letters in the message that is illegal, if it is, it'll kick you the "Illegal characters in chat".

SharedConstants.java (open) SharedConstants.java (close)

Code:java

package net.minecraft.server.v1_7_R1;
 
public class SharedConstants
{
public static final char[] allowedCharacters = { '/', '\n', '\r', '\t', '\000', '\f', '`', '?', '*', '\\', '<', '>', '|', '"', ':' };
 
public static boolean isAllowedChatCharacter(char paramChar)
{
return (paramChar != '§') && (paramChar >= ' ') && (paramChar != '');
}
 
public static String a(String paramString)
{
StringBuilder localStringBuilder = new StringBuilder();
 
for (char c : paramString.toCharArray()) {
if (isAllowedChatCharacter(c)) {
localStringBuilder.append(c);
}
}
 
return localStringBuilder.toString();
}
}

It seems that one of your plugins or players is somehow getting these characters in to the chat so I'd try and look around for that throughout your server.

[EDIT] And here's the code where it's kicking you.
https://github.com/Bukkit/CraftBukk...t/minecraft/server/PlayerConnection.java#L769

 

Having the same problem! I don't know if it is a plugin or something like that but i really want this error fixed!

 

I have the same problem on my server too.

 

I'm running a beta on 1.7 and after about 20 minutes the server stops itself and freezes before it saves and I'm running on a Mac.

 

Ok! I got this fixed! My problem was that i had AuthMe Reloaded and NoCheatPlus, one of this plugins allowed the _ character and the other doesn't. I simply maked them allow the _ character and it stoped crashing!

 

Not trying to be that guy, but I'm using the newest build of CB and this still happens to me. Lord knows what Faller10 was trying to say, because I can't comprehend if that's English or not. I was just wondering if Anyone knows how to fix the problem and can explain the solution well enough.