Writing a new NSE library in C/C++

NSE libraries in Lua are preferred, but the Nmap Scripting Engine also supports C/C++ modules via the Lua C API. This is only recommended if you require better performance or integrating an already existing project.

This recipe will teach you how to create an NSE library in C/C++.

How to do it...

Let's go through the process of creating a C library and accessing it with the Lua C API. Our module will only contain a single function that prints a message on screen:

1. Create your library source and header files. C library file names must be prepended with the string nse_. For our library test, we will need nse_test.cc and nse_test.h. First, create nse_test.cc and paste the following code:

   extern "C" {  
   #include...