Question

I do have a custom authentication mechanism which is written in Java. I was wondering what would be the best way to implement a Linux PAM module without rewriting the code in C?

I am aware of this list of available PAM modules but none of them are Java-related.

There’s also JPam but it does the opposite thing: it allows to get user/group information to be used in Java app whereas I need to use existing Java code to authenticate users in Linux (e.g. via SSH).

Any suggestions are welcome.

Answer 1

You could try:

• Compile your Java program using GCJ to native code
• Write glue C program which embeds JVM and loads your Java code

but neither of those ideas seem ideal.