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|
use crate::{
controller::Controller,
storage::{atomic_private_write, private_directory},
subscription::HttpSource,
xray::systemctl,
};
use anyhow::{Result, ensure};
use std::{fs, path::Path, process::Stdio};
use tokio::process::Command;
const SERVICE: &str = include_str!("../assets/roentgen.service");
const GUARD: &str = include_str!("../assets/roentgen-guard.service");
const XRAY: &str = include_str!("../assets/roentgen-xray.service");
const BUS: &str = include_str!("../assets/org.roentgen.Controller1.conf");
const POLKIT: &str = include_str!("../assets/org.roentgen.policy");
fn root() -> Result<()> {
ensure!(
unsafe { libc::geteuid() } == 0,
"Run this explicit installation/recovery command as root"
);
Ok(())
}
pub async fn install() -> Result<()> {
root()?;
let _ = crate::daemon::runtime()?;
crate::xray::preflight().await?;
private_directory(Path::new("/etc/roentgen"))?;
private_directory(Path::new("/var/lib/roentgen"))?;
if crate::xray::identity().is_err() {
let status = Command::new("/usr/sbin/useradd")
.args([
"--system",
"--user-group",
"--no-create-home",
"--shell",
"/sbin/nologin",
"roentgen-xray",
])
.stdin(Stdio::null())
.status()
.await?;
ensure!(
status.success(),
"Could not create the dedicated Xray account"
);
}
let _ = systemctl(&["stop", "roentgen.service"]).await;
let _lock = crate::locking::controller_lock()?;
let mut controller = Controller::open_paths(
Path::new("/etc/roentgen"),
Path::new("/var/lib/roentgen"),
crate::daemon::runtime()?,
Box::new(HttpSource),
)?;
// Do not overwrite the saved guard or enabled intent on reinstallation.
#[cfg(feature = "linux-runtime")]
if !Path::new("/etc/roentgen/guard.toml").exists() {
crate::linux::write_guard(controller.status()?.requested_enabled)?;
}
let current = std::env::current_exe()?;
let target = Path::new("/usr/local/bin/roentgen");
if current != target {
atomic_private_write(target, &fs::read(current)?)?;
use std::os::unix::fs::PermissionsExt;
fs::set_permissions(target, fs::Permissions::from_mode(0o755))?;
}
for (path, content) in assets() {
if let Some(parent) = Path::new(path).parent() {
fs::create_dir_all(parent)?;
}
fs::write(path, content)?;
}
systemctl(&["daemon-reload"]).await?;
// Ask dbus to reload policy without restarting the system bus.
let connection = zbus::Connection::system().await?;
zbus::fdo::DBusProxy::new(&connection)
.await?
.reload_config()
.await?;
systemctl(&["enable", "roentgen-guard.service", "roentgen.service"]).await?;
systemctl(&["start", "roentgen-guard.service"]).await?;
controller.restore().await?;
drop(controller);
drop(_lock);
systemctl(&["restart", "roentgen.service"]).await?;
Ok(())
}
fn assets() -> [(&'static str, &'static str); 8] {
[
("/etc/systemd/system/roentgen.service", SERVICE),
("/etc/systemd/system/roentgen-guard.service", GUARD),
("/etc/systemd/system/roentgen-xray.service", XRAY),
("/etc/dbus-1/system.d/org.roentgen.Controller1.conf", BUS),
("/usr/share/polkit-1/actions/org.roentgen.policy", POLKIT),
(
"/etc/systemd/system/NetworkManager.service.d/50-roentgen-guard.conf",
"[Unit]\nRequires=roentgen-guard.service\nAfter=roentgen-guard.service\n",
),
(
"/etc/systemd/system/systemd-networkd.service.d/50-roentgen-guard.conf",
"[Unit]\nRequires=roentgen-guard.service\nAfter=roentgen-guard.service\n",
),
(
"/etc/systemd/system/network.service.d/50-roentgen-guard.conf",
"[Unit]\nRequires=roentgen-guard.service\nAfter=roentgen-guard.service\n",
),
]
}
pub async fn recover() -> Result<()> {
root()?;
// Serialize recovery against ordinary controller transactions by stopping it first.
let _ = systemctl(&["stop", "roentgen.service"]).await;
let _lock = crate::locking::controller_lock()?;
crate::storage::persist_recovery_disabled(Path::new("/var/lib/roentgen"))?;
let mut runtime = crate::daemon::runtime()?;
runtime.disable().await
}
pub async fn uninstall(purge: bool) -> Result<()> {
root()?;
recover().await?;
systemctl(&[
"disable",
"--now",
"roentgen.service",
"roentgen-guard.service",
])
.await?;
#[cfg(feature = "linux-runtime")]
crate::linux::firewall::remove()?;
for (path, _) in assets() {
if Path::new(path).exists() {
fs::remove_file(path)?;
}
}
systemctl(&["daemon-reload"]).await?;
if Path::new("/run/roentgen").exists() {
fs::remove_dir_all("/run/roentgen")?;
}
if purge {
fs::remove_dir_all("/etc/roentgen")?;
fs::remove_dir_all("/var/lib/roentgen")?;
}
if Path::new("/usr/local/bin/roentgen").exists() {
fs::remove_file("/usr/local/bin/roentgen")?;
}
Ok(())
}
|
