BLNS CPP 🐈

C++ API for the Big List of Naughty Strings.

Table of Contents

• Description 📃
• Features ⚡
• Usage : CMake Integration 🔨
  • What if I don't use CMake ? ⚠️
• Contribution 🌍
  • How to contribute ?
  • Debug : local build 🪲

Description 📃

Some strings are known to cause various issues when passed as user input (e.g. security issues, crashes, injections, ...). The Big List of Naughty Strings contains most of them.

It's highly recommended to test your functions taking std::string as input with the elements of this list to ensure everything works as expected.

This repository provides a C++ API to use this list, with a CMake integration.

Features ⚡

• ✔️ CMake integration
• ✔️ Cross-platform
• ✔️ Latest version of BLNS.txt is downloaded automatically at every build
• ✔️ Uses only C++ STL and only C++ standards
• ✔️ Compatible with the latest C++ standards (C++23 included)
• ✔️ Example project provided in the repository
• ✔️ The implementation contains C assertions to ensure your copy of the project works as expected

Usage : CMake Integration 🔨

You can setup your CMake project to use BLNS using CPM (no need to download / clone this repo manually).

Consider you want to add blns to a project called myapp. Here is what your CMakeLists.txt file looks like:

project("myapp")

# Add BLNS cmake package
CPMAddPackage("gh:eliabieri/blnscpp#master")
add_executable(${PROJECT_NAME} myapp.cpp)

target_include_directories(${PROJECT_NAME} PRIVATE ${blnscpp_SOURCE_DIR}/include)  # Add include path
target_link_libraries(${PROJECT_NAME} PRIVATE lib_blns)  # Link the blns library

With this setup, you can use blns like so in myapp.cpp:

#include <blns/blns.h>  // <-- Blns header to include
#include <iostream>

int main() {
    for (const auto &ns : blns::Blns::getStrings())
    {
        std::cout << ns << std::endl;
    }
    return 0;
}

What if I don't use CMake ? ⚠️

It is not recommended to use this API without CMake. In the build steps of this project, the latest version of the list is downloaded directly from the BLNS repository. The list is often updated. You should use its latest version to test your code with the state-of-the-art strings. CMake is the easiest way to implement this : you have the latest version of BLNS.txt at every clean build. Moreover, if you use CPM as indicated above, you will benefit from the latest version of the API without changing your code.

If you don't want (of can't) use CMake, you can clone this repository or add it as a git submodule to use the API. However, you will need to implement your own way to download BLNS.txt at the root of the repository. Please, ensure that:

• ✔️ The latest version of BLNS.txt is downloaded automatically at every build
• ✔️ You can benefit from the patches of this API without changing your code

Contribution 🌍

How to contribute ?

Please, feel free to contribute to this project if you feel like it. You can report a bug / propose a feature creating an issue. If you want to submit your changes, please fork the repository and create a pull request from your fork to the master branch.

Debug : local build 🪲

Prerequisites:

• CMake

First, clone the repository :

git clone https://github.com/eliabieri/blnscpp
cd blnscpp

Then, build:

mkdir build && cd build
cmake ..
cmake --build .

Run the example :

./blns_example