Ilya Mateyko

go.astrophena.name/tools Module

GitHub repository | Commit (90b6d01)

Personal tools.

dungeon

Dungeon sandboxes programs so they can't fulfill their deep dark fantasies on unsuspecting users. It uses Landlock LSM to restrict program's access to the file system and network.

Usage

$ dungeon -config <config file path> <program> [program args...]

The <program> is a path to executable binary and [program args...] are arguments passed to the program.

Config

Dungeon uses JSON config file to describe allowed program's access.

Example:

{
  "fs": {
    "ro_dirs": ["/usr/bin", "/usr/lib"],
    "rw_dirs": ["/tmp"],
    "ro_files": ["/etc/passwd"],
    "rw_files": []
  },
  "network": {
    "allowed_ports": [80, 443],
    "allowed_bindings": [8080]
  }
}

The config contains two main sections: fs and network.

The fs section describes allowed access to the file system.

ro_dirs is an array of paths to directories that the sandboxed program can only read from.

rw_dirs is an array of paths to directories that the sandboxed program can read from and write to.

ro_files is an array of paths to files that the sandboxed program can only read from.

rw_files is an array of paths to files that the sandboxed program can read from and write to.

The network section describes allowed access to the network.

allowed_ports is an array of TCP ports that the sandboxed program is allowed to connect to.

allowed_bindings is an array of TCP ports that the sandboxed program is allowed to bind to.

Notes

Dungeon only works on Linux with Landlock LSM support.