Redact IP addresses from Minecraft server log

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Trumeet d5e0fbcfa9 fix license		2021-10-17 22:24:30 -07:00
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README.md

SafeLog

A Minecraft server side Fabric mod that redacts IP addresses in logs for privacy and compliance purposes.

Places redacted

Player login: [Server thread/INFO] (Minecraft) Notch[/[0:0:0:0:0:0:0:1%0]:56566] logged in with entity id 50 at (5.5, 64.0, 0.5)
Authentication error: [Server thread/INFO] (Minecraft) /127.0.0.1:43832 lost connection: Failed to verify username!

Effect

IP addresses will be MD5 hashed with an optional and customizable salt. Leading slashes and port numbers are preserved.

[Server thread/INFO] (Minecraft) Notch[/[0:0:0:0:0:0:0:1%0]:56566] logged in with entity id 50 at (5.5, 64.0, 0.5) will become [Server thread/INFO] (Minecraft) Notch[/fec2cae1c0333d98b453058e9f6c99d9:56566] logged in with entity id 50 at (5.5, 64.0, 0.5).

[Server thread/INFO] (Minecraft) /127.0.0.1:43832 lost connection: Failed to verify username! will become [Server thread/INFO] (Minecraft) /f528764d624db129b32c21fbca0cb8d6:43832 lost connection: Failed to verify username!.

Salting

Edit config/safelog.properties:

salt = 114514

SafeLog will append real IP addresses after the salt before hashing. Default salt is empty.

Warning: SafeLog will only hash raw IP addresses, so make sure to set a salt to prevent hash cracking.

Building

Tested on Gradle 7.2.

gradle jar

License

GPL v2 only