Rename directories (again)

bin/src/main.rs

@@ -0,0 +1,148 @@
+mod config;
+mod error;
+mod pcap;
+mod server;
+mod stats;
+mod qmdl_store;
+mod diag;
+
+use crate::config::{parse_config, parse_args};
+use crate::diag::run_diag_read_thread;
+use crate::qmdl_store::QmdlStore;
+use crate::server::{ServerState, get_qmdl, serve_static};
+use crate::pcap::get_pcap;
+use crate::stats::get_system_stats;
+use crate::error::RayhunterError;
+
+use axum::response::Redirect;
+use diag::{DiagDeviceCtrlMessage, start_recording, stop_recording};
+use log::{info, error};
+use orca::diag_device::DiagDevice;
+use axum::routing::{get, post};
+use axum::Router;
+use orca::qmdl::QmdlWriter;
+use stats::get_qmdl_manifest;
+use tokio::sync::mpsc::{self, Sender};
+use tokio::task::JoinHandle;
+use tokio_util::task::TaskTracker;
+use std::net::SocketAddr;
+use tokio::net::TcpListener;
+use tokio::sync::{RwLock, oneshot};
+use std::sync::Arc;
+
+// Runs the axum server, taking all the elements needed to build up our
+// ServerState and a oneshot Receiver that'll fire when it's time to shutdown
+// (i.e. user hit ctrl+c)
+async fn run_server(
+    task_tracker: &TaskTracker,
+    config: &config::Config,
+    qmdl_store_lock: Arc<RwLock<QmdlStore>>,
+    server_shutdown_rx: oneshot::Receiver<()>,
+    diag_device_sender: Sender<DiagDeviceCtrlMessage>
+) -> JoinHandle<()> {
+    let state = Arc::new(ServerState {
+        qmdl_store_lock,
+        diag_device_ctrl_sender: diag_device_sender,
+        readonly_mode: config.readonly_mode,
+    });
+
+    let app = Router::new()
+        .route("/api/pcap/*name", get(get_pcap))
+        .route("/api/qmdl/*name", get(get_qmdl))
+        .route("/api/system-stats", get(get_system_stats))
+        .route("/api/qmdl-manifest", get(get_qmdl_manifest))
+        .route("/api/start-recording", post(start_recording))
+        .route("/api/stop-recording", post(stop_recording))
+        .route("/", get(|| async { Redirect::permanent("/index.html") }))
+        .route("/*path", get(serve_static))
+        .with_state(state);
+    let addr = SocketAddr::from(([127, 0, 0, 1], config.port));
+    let listener = TcpListener::bind(&addr).await.unwrap();
+    task_tracker.spawn(async move {
+        info!("The orca is hunting for stingrays...");
+        axum::serve(listener, app)
+            .with_graceful_shutdown(server_shutdown_signal(server_shutdown_rx))
+            .await.unwrap();
+    })
+}
+
+async fn server_shutdown_signal(server_shutdown_rx: oneshot::Receiver<()>) {
+    server_shutdown_rx.await.unwrap();
+    info!("Server received shutdown signal, exiting...");
+}
+
+// Loads a QmdlStore if one exists, and if not, only create one if we're not in
+// readonly mode.
+async fn init_qmdl_store(config: &config::Config) -> Result<QmdlStore, RayhunterError> {
+    match (QmdlStore::exists(&config.qmdl_store_path).await?, config.readonly_mode) {
+        (true, _) => Ok(QmdlStore::load(&config.qmdl_store_path).await?),
+        (false, false) => Ok(QmdlStore::create(&config.qmdl_store_path).await?),
+        (false, true) => Err(RayhunterError::NoStoreReadonlyMode(config.qmdl_store_path.clone())),
+    }
+}
+
+// Start a thread that'll track when user hits ctrl+c. When that happens,
+// trigger various cleanup tasks, including sending signals to other threads to
+// shutdown
+fn run_ctrl_c_thread(
+    task_tracker: &TaskTracker,
+    diag_device_sender: Sender<DiagDeviceCtrlMessage>,
+    server_shutdown_tx: oneshot::Sender<()>,
+    qmdl_store_lock: Arc<RwLock<QmdlStore>>
+) -> JoinHandle<Result<(), RayhunterError>> {
+    task_tracker.spawn(async move {
+        match tokio::signal::ctrl_c().await {
+            Ok(()) => {
+                let mut qmdl_store = qmdl_store_lock.write().await;
+                if qmdl_store.current_entry.is_some() {
+                    info!("Closing current QMDL entry...");
+                    qmdl_store.close_current_entry().await?;
+                    info!("Done!");
+                }
+
+                server_shutdown_tx.send(())
+                    .expect("couldn't send server shutdown signal");
+                diag_device_sender.send(DiagDeviceCtrlMessage::Exit).await
+                    .expect("couldn't send Exit message to diag thread");
+            },
+            Err(err) => {
+                error!("Unable to listen for shutdown signal: {}", err);
+            }
+        }
+        Ok(())
+    })
+}
+
+#[tokio::main]
+async fn main() -> Result<(), RayhunterError> {
+    env_logger::init();
+
+    let args = parse_args();
+    let config = parse_config(&args.config_path)?;
+
+    // TaskTrackers give us an interface to spawn tokio threads, and then
+    // eventually await all of them ending
+    let task_tracker = TaskTracker::new();
+
+    let qmdl_store_lock = Arc::new(RwLock::new(init_qmdl_store(&config).await?));
+    let (tx, rx) = mpsc::channel::<DiagDeviceCtrlMessage>(1);
+    if !config.readonly_mode {
+        let qmdl_file = qmdl_store_lock.write().await.new_entry().await?;
+        let qmdl_writer = QmdlWriter::new(qmdl_file.into_std().await);
+        let mut dev = DiagDevice::new(Some(qmdl_writer))
+            .map_err(RayhunterError::DiagInitError)?;
+        dev.config_logs()
+            .map_err(RayhunterError::DiagInitError)?;
+
+        run_diag_read_thread(&task_tracker, dev, rx, qmdl_store_lock.clone());
+    }
+
+    let (server_shutdown_tx, server_shutdown_rx) = oneshot::channel::<()>();
+    run_ctrl_c_thread(&task_tracker, tx.clone(), server_shutdown_tx, qmdl_store_lock.clone());
+    run_server(&task_tracker, &config, qmdl_store_lock.clone(), server_shutdown_rx, tx).await;
+
+    task_tracker.close();
+    task_tracker.wait().await;
+
+    Ok(())
+}