Version exchange and logging

Cargo.toml

@@ -4,6 +4,7 @@ version = "1.5.0"
 edition = "2021"
 
 [dependencies]
+defguard_version = { git = "https://github.com/DefGuard/defguard.git", rev = "f61ce40927a4d21095ea53a691219d5ae46e3e4e" }
 axum = { version = "0.8", features = ["macros"] }
 base64 = "0.22"
 clap = { version = "4.5", features = ["derive", "env"] }
@@ -29,6 +30,7 @@ tonic = { version = "0.14", default-features = false, features = [
     "tls-native-roots",
     "tls-ring",
 ] }
+tracing = "0.1"
 tonic-prost = "0.14"
 
 [target.'cfg(target_os = "linux")'.dependencies]

deny.toml

@@ -106,7 +106,10 @@ allow = [
 confidence-threshold = 0.8
 # Allow 1 or more licenses on a per-crate basis, so that particular licenses
 # aren't accepted for every possible crate as with the normal allow list
-exceptions = [{ allow = ["AGPL-3.0-only"], crate = "defguard-gateway" }]
+exceptions = [
+    { allow = ["AGPL-3.0-only"], crate = "defguard-gateway" },
+    { allow = ["AGPL-3.0-only"], crate = "defguard_version" }
+]
 
 # Some crates don't have (easily) machine readable licensing information,
 # adding a clarification entry for it allows you to manually specify the

src/config.rs

@@ -10,6 +10,9 @@ use crate::error::GatewayError;
 #[clap(about = "Defguard VPN gateway service")]
 #[command(version)]
 pub struct Config {
+    #[arg(long, short = 'l', env = "DEFGUARD_LOG_LEVEL", default_value = "info")]
+    pub log_level: String,
+
     /// Token received from Defguard after completing the network wizard
     #[arg(
         long,
@@ -113,6 +116,7 @@ pub struct Config {
 impl Default for Config {
     fn default() -> Self {
         Self {
+            log_level: "info".to_string(),
             token: "TOKEN".into(),
             name: None,
             grpc_url: "http://localhost:50051".into(),

src/error.rs

@@ -1,3 +1,4 @@
+use defguard_version::{DefguardVersionError, SemverError};
 use defguard_wireguard_rs::error::WireguardInterfaceError;
 use thiserror::Error;
 
@@ -43,4 +44,10 @@ pub enum GatewayError {
 
     #[error("Firewall error: {0}")]
     FirewallError(#[from] FirewallError),
+
+    #[error(transparent)]
+    DefguardVersionError(#[from] DefguardVersionError),
+
+    #[error(transparent)]
+    SemverError(#[from] SemverError),
 }