A Java Agent written in C that listens for strings containing environment variables and substitutes them accordingly. It is intended for use with Spigot plugins to enable environment variable support in their configuration files.

How to use

java -agentpath:/full/path/to/libsubstagent.so [rest of your command as normal]
For example:
java -agentpath:/full/path/to/libsubstagent.so -jar server.jar nogui

You can now use environment variables in your config files like so:
^{ENV_VAR_NAME}

How to build

$ git clone https://github.com/SKBotNL/SubstAgent-JVMTI
$ cd SubstAgent-JVMTI
$ cmake -B build
$ cmake --build build

Tests

The tests can be run by executing the run_tests.sh script.