server: add basic config file

src/server/config.rs

@@ -0,0 +1,36 @@
+use std::net::SocketAddrV4;
+
+use serde::{Deserialize, Serialize};
+
+pub const DEFAULT_CONFIG_PATH: &str = "/etc/roowho2/config.toml";
+
+pub const DEFAULT_CLIENT_SOCKET_PATH: &str = "/run/roowho2/server_client.sock";
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Config {
+    /// Configuration for the rwhod server.
+    pub rwhod: RwhodConfig,
+
+    /// Path to the Unix domain socket for client-server communication.
+    ///
+    /// If left as `None`, the server expects to be served a file descriptor to the socket named 'client'.
+    pub client_socket_path: Option<String>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct RwhodConfig {
+    /// Enable or disable the rwhod server functionality.
+    pub enable: bool,
+
+    /// Network interfaces to listen on (e.g., ["eth0", "wlan0"]).
+    ///
+    /// If left as `None`, the server will automatically determine relevant interfaces.
+    ///
+    /// Note that if `broadcast_addresses` is specified, this field is ignored.
+    pub interfaces: Option<Vec<String>>,
+
+    /// Broadcast addresses to send rwhod packets to.
+    ///
+    /// If left as `None`, the server will automatically determine broadcast addresses for the selected interfaces.
+    pub broadcast_addresses: Option<Vec<SocketAddrV4>>,
+}

src/server/rwhod.rs

@@ -75,7 +75,7 @@ pub fn generate_rwhod_status_update() -> anyhow::Result<WhodStatusUpdate> {
     Ok(result)
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct RwhodSendTarget {
     /// Name of the network interface.
     pub name: String,