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|
use crate::{
bus::{NAME, PATH, Service},
controller::Controller,
runtime::Runtime,
subscription::HttpSource,
};
use anyhow::{Result, ensure};
use std::{path::Path, sync::Arc, time::Duration};
use tokio::sync::Mutex;
pub fn runtime() -> Result<Box<dyn Runtime>> {
#[cfg(feature = "linux-runtime")]
{
Ok(Box::new(crate::linux::LinuxRuntime::default()))
}
#[cfg(not(feature = "linux-runtime"))]
{
anyhow::bail!("This build has no Linux runtime; rebuild with --features linux-runtime")
}
}
pub async fn run() -> Result<()> {
ensure!(
unsafe { libc::geteuid() } == 0,
"The controller must run as a root-owned system service"
);
let _lock = crate::locking::controller_lock()?;
let mut controller = Controller::open_paths(
Path::new("/etc/roentgen"),
Path::new("/var/lib/roentgen"),
runtime()?,
Box::new(HttpSource),
)?;
if let Err(error) = controller.restore().await {
controller.report_runtime_error(&error);
}
let controller = Arc::new(Mutex::new(controller));
let _connection = zbus::connection::Builder::system()?
.name(NAME)?
.serve_at(
PATH,
Service {
controller: controller.clone(),
cancellation: Arc::new(tokio::sync::Notify::new()),
},
)?
.build()
.await?;
let mut interval = tokio::time::interval(Duration::from_secs(5));
interval.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Skip);
loop {
tokio::select! {
_ = tokio::signal::ctrl_c() => break,
_ = interval.tick() => {
let mut controller = controller.lock().await;
if let Err(error) = controller.scheduled_check().await { controller.report_runtime_error(&error); tracing::warn!("{error}"); }
}
}
}
// Exiting the controller never releases enabled protection or stops the core.
Ok(())
}
pub async fn guard() -> Result<()> {
ensure!(unsafe { libc::geteuid() } == 0, "The guard requires root");
#[cfg(feature = "linux-runtime")]
{
crate::linux::restore_guard()
}
#[cfg(not(feature = "linux-runtime"))]
{
anyhow::bail!("Rebuild with --features linux-runtime")
}
}
|
