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#![deny(missing_docs)]
#![doc = include_str!("../README.md")]
#![cfg_attr(test, deny(warnings))]
use clap::Parser;
#[cfg(unix)]
extern crate privdrop;
use std::ffi::OsString;
#[cfg(feature = "chroot")]
use std::path::PathBuf;
#[derive(Debug, thiserror::Error)]
pub enum Error {
#[cfg(unix)]
#[error("Privileges could not be dropped")]
PrivDrop(#[from] privdrop::PrivDropError),
}
#[cfg(unix)]
mod supported {
use super::*;
#[derive(Parser, Debug)]
pub struct Permission {
#[clap(short = 'u', long = "user", value_parser)]
user: Option<OsString>,
#[clap(short = 'g', long = "group", value_parser)]
group: Option<OsString>,
#[cfg(feature = "chroot")]
#[clap(long = "chroot", value_parser)]
chroot: Option<PathBuf>,
}
impl Permission {
pub fn drop(self) -> Result<(), Error> {
let mut drop = privdrop::PrivDrop::default();
if let Some(user) = self.user {
drop = drop.user(&user);
}
if let Some(group) = self.group {
drop = drop.group(&group);
}
#[cfg(feature = "chroot")]
{
if let Some(chroot) = self.chroot {
drop = drop.chroot(&chroot);
}
}
drop.apply()?;
Ok(())
}
pub fn user(&self) -> &Option<OsString> {
&self.user
}
pub fn group(&self) -> &Option<OsString> {
&self.group
}
#[cfg(feature = "chroot")]
pub fn chroot(&self) -> &Option<PathBuf> {
&self.chroot
}
}
}
#[cfg(not(unix))]
mod stub {
use super::*;
#[derive(Parser, Debug)]
pub struct Permission {}
impl Permission {
pub fn drop(self) -> Result<(), Error> {
Ok(())
}
pub fn user(&self) -> &Option<OsString> {
&None
}
pub fn group(&self) -> &Option<OsString> {
&None
}
#[cfg(feature = "chroot")]
pub fn chroot(&self) -> &Option<PathBuf> {
&None
}
}
}
#[cfg(unix)]
pub use supported::*;
#[cfg(not(unix))]
pub use stub::*;