.rustfmt.toml

@@ -0,0 +1,2 @@
+hard_tabs = false
+tab_spaces = 2

src/config/mod.rs

@@ -3,9 +3,13 @@ mod options;
 mod options_test;
 mod runtime;
 
-pub use options::{ConfigOpts, ConfigOptsConsul, ConfigOptsAcme, ConfigOptsFirewall, ConfigOptsIgd};
-pub use runtime::{RuntimeConfig, RuntimeConfigAcme, RuntimeConfigConsul, RuntimeConfigFirewall, RuntimeConfigIgd};
+pub use options::{
+  ConfigOpts, ConfigOptsAcme, ConfigOptsConsul, ConfigOptsFirewall, ConfigOptsIgd,
+};
+pub use runtime::{
+  RuntimeConfig, RuntimeConfigAcme, RuntimeConfigConsul, RuntimeConfigFirewall, RuntimeConfigIgd,
+};
 
 pub const EXPIRATION_TIME: u16 = 300;
 pub const REFRESH_TIME: u16 = 60;
-pub const CONSUL_URL: &str = "http://127.0.0.1:8500";
+pub const CONSUL_URL: &str = "http://127.0.0.1:8500";

src/config/options.rs

@@ -12,93 +12,95 @@ use crate::config::RuntimeConfig;
 // There is no *need* to have a 'DIPLONAT_XXX_*' prefix for all config options.
 // If some config options are shared by several modules, a ConfigOptsBase could
 // contain them, and parse the 'DIPLONAT_*' prefix directly.
-// Only in runtime.rs would these options find their proper location in each 
+// Only in runtime.rs would these options find their proper location in each
 // module's struct.
 
-
 /// Consul configuration options
 #[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsConsul {
-	/// Consul's node name [default: None]
-	pub node_name: Option<String>,
-	/// Consul's REST URL [default: "http://127.0.0.1:8500"]
-	pub url: Option<String>,
+  /// Consul's node name [default: None]
+  pub node_name: Option<String>,
+  /// Consul's REST URL [default: "http://127.0.0.1:8500"]
+  pub url: Option<String>,
 }
 
 /// ACME configuration options
 #[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsAcme {
-	/// Whether the ACME module is enabled [default: false]
-	#[serde(default)]
-	pub enable: bool,
+  /// Whether the ACME module is enabled [default: false]
+  #[serde(default)]
+  pub enable: bool,
 
-	/// The default domain holder's e-mail [default: None]
-	pub email: Option<String>,
+  /// The default domain holder's e-mail [default: None]
+  pub email: Option<String>,
 }
 
 /// Firewall configuration options
 #[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsFirewall {
-	/// Whether the firewall module is enabled [default: false]
-	#[serde(default)]
-	pub enable: bool,
+  /// Whether the firewall module is enabled [default: false]
+  #[serde(default)]
+  pub enable: bool,
 
-	/// Refresh time for firewall rules [default: 300]
-	pub refresh_time: Option<u16>,
+  /// Refresh time for firewall rules [default: 300]
+  pub refresh_time: Option<u16>,
 }
 
 /// IGD configuration options
 #[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsIgd {
-	/// Whether the IGD module is enabled [default: false]
-	#[serde(default)]
-	pub enable: bool,
+  /// Whether the IGD module is enabled [default: false]
+  #[serde(default)]
+  pub enable: bool,
 
-	/// This node's private IP address [default: None]
-	pub private_ip: Option<String>,
-	/// Expiration time for IGD rules [default: 60]
-	pub expiration_time: Option<u16>,
-	/// Refresh time for IGD rules [default: 300]
-	pub refresh_time: Option<u16>,
+  /// This node's private IP address [default: None]
+  pub private_ip: Option<String>,
+  /// Expiration time for IGD rules [default: 60]
+  pub expiration_time: Option<u16>,
+  /// Refresh time for IGD rules [default: 300]
+  pub refresh_time: Option<u16>,
 }
 
 /// Model of all potential configuration options
 pub struct ConfigOpts {
-	pub consul: ConfigOptsConsul,
-	pub acme: ConfigOptsAcme,
-	pub firewall: ConfigOptsFirewall,
-	pub igd: ConfigOptsIgd,
+  pub consul: ConfigOptsConsul,
+  pub acme: ConfigOptsAcme,
+  pub firewall: ConfigOptsFirewall,
+  pub igd: ConfigOptsIgd,
 }
 
 impl ConfigOpts {
-	pub fn from_env() -> Result<RuntimeConfig> {
-		let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_env()?;
-		let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_env()?;
-		let firewall: ConfigOptsFirewall = envy::prefixed("DIPLONAT_FIREWALL_").from_env()?;
-		let igd: ConfigOptsIgd = envy::prefixed("DIPLONAT_IGD_").from_env()?;
+  pub fn from_env() -> Result<RuntimeConfig> {
+    let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_env()?;
+    let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_env()?;
+    let firewall: ConfigOptsFirewall = envy::prefixed("DIPLONAT_FIREWALL_").from_env()?;
+    let igd: ConfigOptsIgd = envy::prefixed("DIPLONAT_IGD_").from_env()?;
 
-		RuntimeConfig::new(Self {
-			consul,
-			acme,
-			firewall,
-			igd,
-		})
-	}
+    RuntimeConfig::new(Self {
+      consul,
+      acme,
+      firewall,
+      igd,
+    })
+  }
 
-	// Currently only used in tests
-	#[allow(dead_code)]
-	pub fn from_iter<Iter: Clone>(iter: Iter) -> Result<RuntimeConfig>
-	where Iter: IntoIterator<Item = (String, String)> {
-		let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_iter(iter.clone())?;
-		let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_iter(iter.clone())?;
-		let firewall: ConfigOptsFirewall = envy::prefixed("DIPLONAT_FIREWALL_").from_iter(iter.clone())?;
-		let igd: ConfigOptsIgd = envy::prefixed("DIPLONAT_IGD_").from_iter(iter.clone())?;
+  // Currently only used in tests
+  #[allow(dead_code)]
+  pub fn from_iter<Iter: Clone>(iter: Iter) -> Result<RuntimeConfig>
+  where
+    Iter: IntoIterator<Item = (String, String)>,
+  {
+    let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_iter(iter.clone())?;
+    let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_iter(iter.clone())?;
+    let firewall: ConfigOptsFirewall =
+      envy::prefixed("DIPLONAT_FIREWALL_").from_iter(iter.clone())?;
+    let igd: ConfigOptsIgd = envy::prefixed("DIPLONAT_IGD_").from_iter(iter.clone())?;
 
-		RuntimeConfig::new(Self {
-			consul,
-			acme,
-			firewall,
-			igd,
-		})
-	}
-}
+    RuntimeConfig::new(Self {
+      consul,
+      acme,
+      firewall,
+      igd,
+    })
+  }
+}

src/config/options_test.rs

@@ -5,28 +5,43 @@ use crate::config::*;
 
 // Environment variables are set for the entire process and
 // tests are run whithin the same process.
-// => We cannot test ConfigOpts::from_env(), 
+// => We cannot test ConfigOpts::from_env(),
 // because tests modify each other's environment.
 // This is why we only test ConfigOpts::from_iter(iter).
 
 fn minimal_valid_options() -> HashMap<String, String> {
-	let mut opts = HashMap::new();
-    opts.insert("DIPLONAT_CONSUL_NODE_NAME".to_string(), "consul_node".to_string());
-    opts
+  let mut opts = HashMap::new();
+  opts.insert(
+    "DIPLONAT_CONSUL_NODE_NAME".to_string(),
+    "consul_node".to_string(),
+  );
+  opts
 }
 
 fn all_valid_options() -> HashMap<String, String> {
-	let mut opts = minimal_valid_options();
-    opts.insert("DIPLONAT_CONSUL_URL".to_string(), "http://127.0.0.1:9999".to_string());
-	opts.insert("DIPLONAT_ACME_ENABLE".to_string(), "true".to_string());
-	opts.insert("DIPLONAT_ACME_EMAIL".to_string(), "bozo@bozo.net".to_string());
-	opts.insert("DIPLONAT_FIREWALL_ENABLE".to_string(), "true".to_string());
-	opts.insert("DIPLONAT_FIREWALL_REFRESH_TIME".to_string(), "20".to_string());
-	opts.insert("DIPLONAT_IGD_ENABLE".to_string(), "true".to_string());
-	opts.insert("DIPLONAT_IGD_PRIVATE_IP".to_string(), "172.123.43.555".to_string());
-	opts.insert("DIPLONAT_IGD_EXPIRATION_TIME".to_string(), "60".to_string());
-	opts.insert("DIPLONAT_IGD_REFRESH_TIME".to_string(), "10".to_string());
-    opts
+  let mut opts = minimal_valid_options();
+  opts.insert(
+    "DIPLONAT_CONSUL_URL".to_string(),
+    "http://127.0.0.1:9999".to_string(),
+  );
+  opts.insert("DIPLONAT_ACME_ENABLE".to_string(), "true".to_string());
+  opts.insert(
+    "DIPLONAT_ACME_EMAIL".to_string(),
+    "bozo@bozo.net".to_string(),
+  );
+  opts.insert("DIPLONAT_FIREWALL_ENABLE".to_string(), "true".to_string());
+  opts.insert(
+    "DIPLONAT_FIREWALL_REFRESH_TIME".to_string(),
+    "20".to_string(),
+  );
+  opts.insert("DIPLONAT_IGD_ENABLE".to_string(), "true".to_string());
+  opts.insert(
+    "DIPLONAT_IGD_PRIVATE_IP".to_string(),
+    "172.123.43.555".to_string(),
+  );
+  opts.insert("DIPLONAT_IGD_EXPIRATION_TIME".to_string(), "60".to_string());
+  opts.insert("DIPLONAT_IGD_REFRESH_TIME".to_string(), "10".to_string());
+  opts
 }
 
 // #[test]
@@ -39,107 +54,108 @@ fn all_valid_options() -> HashMap<String, String> {
 #[test]
 #[should_panic]
 fn err_empty_env() {
-	std::env::remove_var("DIPLONAT_CONSUL_NODE_NAME");
-	let opts: HashMap<String, String> = HashMap::new();
-	ConfigOpts::from_iter(opts).unwrap();
+  std::env::remove_var("DIPLONAT_CONSUL_NODE_NAME");
+  let opts: HashMap<String, String> = HashMap::new();
+  ConfigOpts::from_iter(opts).unwrap();
 }
 
 #[test]
 fn ok_minimal_valid_options() {
-	let opts = minimal_valid_options();
-	let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
+  let opts = minimal_valid_options();
+  let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
 
-	assert_eq!(
-		&rt_config.consul.node_name, 
-		opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
-	);
-	assert_eq!(
-		rt_config.consul.url, 
-		CONSUL_URL.to_string()
-	);
-	assert!(rt_config.acme.is_none());
-	assert!(rt_config.firewall.is_none());
-	assert!(rt_config.igd.is_none());
-	/*assert_eq!(
-		rt_config.firewall.refresh_time,
-		Duration::from_secs(REFRESH_TIME.into())
-	);
-	assert_eq!(
-		&rt_config.igd.private_ip,
-		opts.get(&"DIPLONAT_PRIVATE_IP".to_string()).unwrap()
-	);
-	assert_eq!(
-		rt_config.igd.expiration_time,
-		Duration::from_secs(EXPIRATION_TIME.into())
-	);
-	assert_eq!(
-		rt_config.igd.refresh_time,
-		Duration::from_secs(REFRESH_TIME.into())
-	);*/
+  assert_eq!(
+    &rt_config.consul.node_name,
+    opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
+  );
+  assert_eq!(rt_config.consul.url, CONSUL_URL.to_string());
+  assert!(rt_config.acme.is_none());
+  assert!(rt_config.firewall.is_none());
+  assert!(rt_config.igd.is_none());
+  /*assert_eq!(
+    rt_config.firewall.refresh_time,
+    Duration::from_secs(REFRESH_TIME.into())
+  );
+  assert_eq!(
+    &rt_config.igd.private_ip,
+    opts.get(&"DIPLONAT_PRIVATE_IP".to_string()).unwrap()
+  );
+  assert_eq!(
+    rt_config.igd.expiration_time,
+    Duration::from_secs(EXPIRATION_TIME.into())
+  );
+  assert_eq!(
+    rt_config.igd.refresh_time,
+    Duration::from_secs(REFRESH_TIME.into())
+  );*/
 }
 
 #[test]
 #[should_panic]
 fn err_invalid_igd_options() {
-	let mut opts = minimal_valid_options();
-	opts.insert("DIPLONAT_IGD_ENABLE".to_string(), "true".to_string());
-	opts.insert("DIPLONAT_IGD_EXPIRATION_TIME".to_string(), "60".to_string());
-	opts.insert("DIPLONAT_IGD_REFRESH_TIME".to_string(), "60".to_string());
-	ConfigOpts::from_iter(opts).unwrap();
+  let mut opts = minimal_valid_options();
+  opts.insert("DIPLONAT_IGD_ENABLE".to_string(), "true".to_string());
+  opts.insert("DIPLONAT_IGD_EXPIRATION_TIME".to_string(), "60".to_string());
+  opts.insert("DIPLONAT_IGD_REFRESH_TIME".to_string(), "60".to_string());
+  ConfigOpts::from_iter(opts).unwrap();
 }
 
 #[test]
 fn ok_all_valid_options() {
-	let opts = all_valid_options();
-	let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
+  let opts = all_valid_options();
+  let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
 
-	let firewall_refresh_time = Duration::from_secs(
-		opts.get(&"DIPLONAT_FIREWALL_REFRESH_TIME".to_string()).unwrap()
-			.parse::<u64>().unwrap()
-			.into());
-	let igd_expiration_time = Duration::from_secs(
-		opts.get(&"DIPLONAT_IGD_EXPIRATION_TIME".to_string()).unwrap()
-			.parse::<u64>().unwrap()
-			.into());
-	let igd_refresh_time = Duration::from_secs(
-		opts.get(&"DIPLONAT_IGD_REFRESH_TIME".to_string()).unwrap()
-			.parse::<u64>().unwrap()
-			.into());
+  let firewall_refresh_time = Duration::from_secs(
+    opts
+      .get(&"DIPLONAT_FIREWALL_REFRESH_TIME".to_string())
+      .unwrap()
+      .parse::<u64>()
+      .unwrap()
+      .into(),
+  );
+  let igd_expiration_time = Duration::from_secs(
+    opts
+      .get(&"DIPLONAT_IGD_EXPIRATION_TIME".to_string())
+      .unwrap()
+      .parse::<u64>()
+      .unwrap()
+      .into(),
+  );
+  let igd_refresh_time = Duration::from_secs(
+    opts
+      .get(&"DIPLONAT_IGD_REFRESH_TIME".to_string())
+      .unwrap()
+      .parse::<u64>()
+      .unwrap()
+      .into(),
+  );
 
-	assert_eq!(
-		&rt_config.consul.node_name, 
-		opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
-	);
-	assert_eq!(
-		&rt_config.consul.url, 
-		opts.get(&"DIPLONAT_CONSUL_URL".to_string()).unwrap()
-	);
+  assert_eq!(
+    &rt_config.consul.node_name,
+    opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
+  );
+  assert_eq!(
+    &rt_config.consul.url,
+    opts.get(&"DIPLONAT_CONSUL_URL".to_string()).unwrap()
+  );
 
-	assert!(rt_config.acme.is_some());
-	let acme = rt_config.acme.unwrap();
-	assert_eq!(
-		&acme.email,
-		opts.get(&"DIPLONAT_ACME_EMAIL".to_string()).unwrap());
+  assert!(rt_config.acme.is_some());
+  let acme = rt_config.acme.unwrap();
+  assert_eq!(
+    &acme.email,
+    opts.get(&"DIPLONAT_ACME_EMAIL".to_string()).unwrap()
+  );
 
-	assert!(rt_config.firewall.is_some());
-	let firewall = rt_config.firewall.unwrap();
-	assert_eq!(
-		firewall.refresh_time,
-		firewall_refresh_time
-	);
+  assert!(rt_config.firewall.is_some());
+  let firewall = rt_config.firewall.unwrap();
+  assert_eq!(firewall.refresh_time, firewall_refresh_time);
 
-	assert!(rt_config.igd.is_some());
-	let igd = rt_config.igd.unwrap();
-	assert_eq!(
-		&igd.private_ip,
-		opts.get(&"DIPLONAT_IGD_PRIVATE_IP".to_string()).unwrap()
-	);
-	assert_eq!(
-		igd.expiration_time,
-		igd_expiration_time
-	);
-	assert_eq!(
-		igd.refresh_time,
-		igd_refresh_time
-	);
-}
+  assert!(rt_config.igd.is_some());
+  let igd = rt_config.igd.unwrap();
+  assert_eq!(
+    &igd.private_ip,
+    opts.get(&"DIPLONAT_IGD_PRIVATE_IP".to_string()).unwrap()
+  );
+  assert_eq!(igd.expiration_time, igd_expiration_time);
+  assert_eq!(igd.refresh_time, igd_refresh_time);
+}

src/config/runtime.rs

@@ -1,8 +1,10 @@
 use std::time::Duration;
 
-use anyhow::{Result, anyhow};
+use anyhow::{anyhow, Result};
 
-use crate::config::{ConfigOpts, ConfigOptsConsul, ConfigOptsAcme, ConfigOptsFirewall, ConfigOptsIgd};
+use crate::config::{
+  ConfigOpts, ConfigOptsAcme, ConfigOptsConsul, ConfigOptsFirewall, ConfigOptsIgd,
+};
 
 // This code is inspired by the Trunk crate (https://github.com/thedodd/trunk)
 
@@ -13,118 +15,116 @@ use crate::config::{ConfigOpts, ConfigOptsConsul, ConfigOptsAcme, ConfigOptsFire
 
 #[derive(Debug)]
 pub struct RuntimeConfigConsul {
-	pub node_name: String,
-	pub url: String,
+  pub node_name: String,
+  pub url: String,
 }
 
 #[derive(Debug)]
 pub struct RuntimeConfigAcme {
-	pub email: String,
+  pub email: String,
 }
 
 #[derive(Debug)]
 pub struct RuntimeConfigFirewall {
-	pub refresh_time: Duration,
+  pub refresh_time: Duration,
 }
 
 #[derive(Debug)]
 pub struct RuntimeConfigIgd {
-	pub private_ip: String,
-	pub expiration_time: Duration,
-	pub refresh_time: Duration,
+  pub private_ip: String,
+  pub expiration_time: Duration,
+  pub refresh_time: Duration,
 }
 
 #[derive(Debug)]
 pub struct RuntimeConfig {
-	pub consul: RuntimeConfigConsul,
-	pub acme: Option<RuntimeConfigAcme>,
-	pub firewall: Option<RuntimeConfigFirewall>,
-	pub igd: Option<RuntimeConfigIgd>,
+  pub consul: RuntimeConfigConsul,
+  pub acme: Option<RuntimeConfigAcme>,
+  pub firewall: Option<RuntimeConfigFirewall>,
+  pub igd: Option<RuntimeConfigIgd>,
 }
 
 impl RuntimeConfig {
-	pub fn new(opts: ConfigOpts) -> Result<Self> {
-		let consul = RuntimeConfigConsul::new(opts.consul.clone())?;
-		let acme = RuntimeConfigAcme::new(opts.acme.clone())?;
-		let firewall = RuntimeConfigFirewall::new(opts.firewall.clone())?;
-		let igd = RuntimeConfigIgd::new(opts.igd.clone())?;
+  pub fn new(opts: ConfigOpts) -> Result<Self> {
+    let consul = RuntimeConfigConsul::new(opts.consul.clone())?;
+    let acme = RuntimeConfigAcme::new(opts.acme.clone())?;
+    let firewall = RuntimeConfigFirewall::new(opts.firewall.clone())?;
+    let igd = RuntimeConfigIgd::new(opts.igd.clone())?;
 
-		Ok(Self {
-			acme,
-			consul,
-			firewall,
-			igd,
-		})
-	}
+    Ok(Self {
+      acme,
+      consul,
+      firewall,
+      igd,
+    })
+  }
 }
 
 impl RuntimeConfigConsul {
-	pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> {
-		let node_name = opts.node_name.expect(
-			"'DIPLONAT_CONSUL_NODE_NAME' is required");
-		let url = opts.url.unwrap_or(super::CONSUL_URL.to_string());
+  pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> {
+    let node_name = opts
+      .node_name
+      .expect("'DIPLONAT_CONSUL_NODE_NAME' is required");
+    let url = opts.url.unwrap_or(super::CONSUL_URL.to_string());
 
-		Ok(Self {
-			node_name,
-			url,
-		})
-	}
+    Ok(Self { node_name, url })
+  }
 }
 
 impl RuntimeConfigAcme {
-	pub fn new(opts: ConfigOptsAcme) -> Result<Option<Self>> {
-		if !opts.enable {
-			return Ok(None);
-		}
+  pub fn new(opts: ConfigOptsAcme) -> Result<Option<Self>> {
+    if !opts.enable {
+      return Ok(None);
+    }
 
-		let email = opts.email.expect(
-			"'DIPLONAT_ACME_EMAIL' is required if ACME is enabled");
+    let email = opts
+      .email
+      .expect("'DIPLONAT_ACME_EMAIL' is required if ACME is enabled");
 
-		Ok(Some(Self {
-			email,
-		}))
-	}
+    Ok(Some(Self { email }))
+  }
 }
 
 impl RuntimeConfigFirewall {
-	pub(super) fn new(opts: ConfigOptsFirewall) -> Result<Option<Self>> {
-		if !opts.enable {
-			return Ok(None);
-		}
+  pub(super) fn new(opts: ConfigOptsFirewall) -> Result<Option<Self>> {
+    if !opts.enable {
+      return Ok(None);
+    }
 
-		let refresh_time = Duration::from_secs(
-				opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
+    let refresh_time = Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
 
-		Ok(Some(Self {
-			refresh_time,
-		}))
-	}
+    Ok(Some(Self { refresh_time }))
+  }
 }
 
 impl RuntimeConfigIgd {
-	pub(super) fn new(opts: ConfigOptsIgd) -> Result<Option<Self>> {
-		if !opts.enable {
-			return Ok(None);
-		}
+  pub(super) fn new(opts: ConfigOptsIgd) -> Result<Option<Self>> {
+    if !opts.enable {
+      return Ok(None);
+    }
 
-		let private_ip = opts.private_ip.expect(
-			"'DIPLONAT_IGD_PRIVATE_IP' is required if IGD is enabled");
-		let expiration_time = Duration::from_secs(
-				opts.expiration_time.unwrap_or(super::EXPIRATION_TIME).into());
-		let refresh_time = Duration::from_secs(
-				opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
+    let private_ip = opts
+      .private_ip
+      .expect("'DIPLONAT_IGD_PRIVATE_IP' is required if IGD is enabled");
+    let expiration_time = Duration::from_secs(
+      opts
+        .expiration_time
+        .unwrap_or(super::EXPIRATION_TIME)
+        .into(),
+    );
+    let refresh_time = Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
 
-		if refresh_time.as_secs() * 2 > expiration_time.as_secs() {
-	      return Err(anyhow!(
+    if refresh_time.as_secs() * 2 > expiration_time.as_secs() {
+      return Err(anyhow!(
 	        "IGD expiration time (currently: {}s) must be at least twice bigger than refresh time (currently: {}s)", 
 	        expiration_time.as_secs(),
 	        refresh_time.as_secs()));
-	    }
+    }
 
-		Ok(Some(Self {
-			private_ip,
-			expiration_time,
-			refresh_time,
-		}))
-	}
-}
+    Ok(Some(Self {
+      private_ip,
+      expiration_time,
+      refresh_time,
+    }))
+  }
+}

src/consul.rs

@@ -1,22 +1,22 @@
 use std::collections::HashMap;
 
-use anyhow::{Result, anyhow};
-use serde::{Serialize, Deserialize};
+use anyhow::{anyhow, Result};
+use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct ServiceEntry {
-  pub Tags: Vec<String>
+  pub Tags: Vec<String>,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct CatalogNode {
-  pub Services: HashMap<String, ServiceEntry>
+  pub Services: HashMap<String, ServiceEntry>,
 }
 
 pub struct Consul {
   client: reqwest::Client,
   url: String,
-  idx: Option<u64>
+  idx: Option<u64>,
 }
 
 impl Consul {
@@ -24,7 +24,7 @@ impl Consul {
     return Self {
       client: reqwest::Client::new(),
       url: url.to_string(),
-      idx: None
+      idx: None,
     };
   }
 
@@ -35,16 +35,16 @@ impl Consul {
   pub async fn watch_node(&mut self, host: &str) -> Result<CatalogNode> {
     let url = match self.idx {
       Some(i) => format!("{}/v1/catalog/node/{}?index={}", self.url, host, i),
-      None => format!("{}/v1/catalog/node/{}", self.url, host)
+      None => format!("{}/v1/catalog/node/{}", self.url, host),
     };
 
     let http = self.client.get(&url).send().await?;
     self.idx = match http.headers().get("X-Consul-Index") {
       Some(v) => Some(v.to_str()?.parse::<u64>()?),
-      None => return Err(anyhow!("X-Consul-Index header not found"))
+      None => return Err(anyhow!("X-Consul-Index header not found")),
     };
 
     let resp: CatalogNode = http.json().await?;
-    return Ok(resp)
+    return Ok(resp);
   }
 }

src/consul_actor.rs

@@ -4,8 +4,8 @@ use std::time::Duration;
 
 use anyhow::Result;
 use log::*;
-use serde::{Serialize, Deserialize};
-use serde_lexpr::{from_str,error};
+use serde::{Deserialize, Serialize};
+use serde_lexpr::{error, from_str};
 use tokio::sync::watch;
 use tokio::time::delay_for;
 
@@ -16,12 +16,12 @@ use crate::messages;
 #[derive(Serialize, Deserialize, Debug)]
 pub enum DiplonatParameter {
   tcp_port(HashSet<u16>),
-  udp_port(HashSet<u16>)
+  udp_port(HashSet<u16>),
 }
 
 #[derive(Serialize, Deserialize, Debug)]
 pub enum DiplonatConsul {
-  diplonat(Vec<DiplonatParameter>)
+  diplonat(Vec<DiplonatParameter>),
 }
 
 pub struct ConsulActor {
@@ -31,13 +31,16 @@ pub struct ConsulActor {
   node: String,
   retries: u32,
 
-  tx_open_ports: watch::Sender<messages::PublicExposedPorts>
+  tx_open_ports: watch::Sender<messages::PublicExposedPorts>,
 }
 
 fn retry_to_time(retries: u32, max_time: Duration) -> Duration {
   // 1.2^x seems to be a good value to exponentially increase time at a good pace
   // eg. 1.2^32 = 341 seconds ~= 5 minutes - ie. after 32 retries we wait 5 minutes
-  return Duration::from_secs(cmp::min(max_time.as_secs(), 1.2f64.powf(retries as f64) as u64))
+  return Duration::from_secs(cmp::min(
+    max_time.as_secs(),
+    1.2f64.powf(retries as f64) as u64,
+  ));
 }
 
 fn to_parameters(catalog: &consul::CatalogNode) -> Vec<DiplonatConsul> {
@@ -57,9 +60,9 @@ fn to_parameters(catalog: &consul::CatalogNode) -> Vec<DiplonatConsul> {
 }
 
 fn to_open_ports(params: &Vec<DiplonatConsul>) -> messages::PublicExposedPorts {
-  let mut op = messages::PublicExposedPorts { 
+  let mut op = messages::PublicExposedPorts {
     tcp_ports: HashSet::new(),
-    udp_ports: HashSet::new()
+    udp_ports: HashSet::new(),
   };
 
   for conf in params {
@@ -77,9 +80,9 @@ fn to_open_ports(params: &Vec<DiplonatConsul>) -> messages::PublicExposedPorts {
 
 impl ConsulActor {
   pub fn new(config: RuntimeConfigConsul) -> Self {
-    let (tx, rx) = watch::channel(messages::PublicExposedPorts{
+    let (tx, rx) = watch::channel(messages::PublicExposedPorts {
       tcp_ports: HashSet::new(),
-      udp_ports: HashSet::new()
+      udp_ports: HashSet::new(),
     });
 
     return Self {
@@ -99,7 +102,11 @@ impl ConsulActor {
           self.consul.watch_node_reset();
           self.retries = cmp::min(std::u32::MAX - 1, self.retries) + 1;
           let will_retry_in = retry_to_time(self.retries, Duration::from_secs(600));
-          error!("Failed to query consul. Will retry in {}s. {}", will_retry_in.as_secs(), e);
+          error!(
+            "Failed to query consul. Will retry in {}s. {}",
+            will_retry_in.as_secs(),
+            e
+          );
           delay_for(will_retry_in).await;
           continue;
         }

src/diplonat.rs

@@ -1,4 +1,4 @@
-use anyhow::{Result, anyhow};
+use anyhow::{anyhow, Result};
 use tokio::try_join;
 
 use crate::config::ConfigOpts;
@@ -17,22 +17,17 @@ impl Diplonat {
   pub async fn new() -> Result<Self> {
     let config = ConfigOpts::from_env()?;
     println!("{:#?}", config);
-    
+
     let consul_actor = ConsulActor::new(config.consul);
 
-    let firewall_actor = FirewallActor::new(
-        config.firewall,
-        &consul_actor.rx_open_ports
-    ).await?;
-    
-    let igd_actor = IgdActor::new(
-      config.igd,
-      &consul_actor.rx_open_ports
-    ).await?;
+    let firewall_actor = FirewallActor::new(config.firewall, &consul_actor.rx_open_ports).await?;
+
+    let igd_actor = IgdActor::new(config.igd, &consul_actor.rx_open_ports).await?;
 
     if firewall_actor.is_none() && igd_actor.is_none() {
       return Err(anyhow!(
-        "At least enable *one* module, otherwise it's boring!"));
+        "At least enable *one* module, otherwise it's boring!"
+      ));
     }
 
     let ctx = Self {
@@ -53,13 +48,13 @@ impl Diplonat {
       async {
         match firewall {
           Some(x) => x.listen().await,
-          None => Ok(())
+          None => Ok(()),
         }
       },
       async {
         match igd {
           Some(x) => x.listen().await,
-          None => Ok(())
+          None => Ok(()),
         }
       },
     )?;

src/fw.rs

@@ -1,6 +1,6 @@
 use std::collections::HashSet;
 
-use anyhow::{Result,Context};
+use anyhow::{Context, Result};
 use iptables;
 use log::*;
 use regex::Regex;
@@ -8,76 +8,92 @@ use regex::Regex;
 use crate::messages;
 
 pub fn setup(ipt: &iptables::IPTables) -> Result<()> {
+  // ensure we start from a clean state without any rule already set
+  cleanup(ipt)?;
 
-    // ensure we start from a clean state without any rule already set
-    cleanup(ipt)?;
-    
-    ipt.new_chain("filter", "DIPLONAT").context("Failed to create new chain")?;
-    ipt.insert_unique("filter", "INPUT", "-j DIPLONAT", 1).context("Failed to insert jump rule")?;
+  ipt
+    .new_chain("filter", "DIPLONAT")
+    .context("Failed to create new chain")?;
+  ipt
+    .insert_unique("filter", "INPUT", "-j DIPLONAT", 1)
+    .context("Failed to insert jump rule")?;
 
-    Ok(())
+  Ok(())
 }
 
 pub fn open_ports(ipt: &iptables::IPTables, ports: messages::PublicExposedPorts) -> Result<()> {
-    for p in ports.tcp_ports {
-        ipt.append("filter", "DIPLONAT", &format!("-p tcp --dport {} -j ACCEPT", p)).context("Failed to insert port rule")?;
-    }
+  for p in ports.tcp_ports {
+    ipt
+      .append(
+        "filter",
+        "DIPLONAT",
+        &format!("-p tcp --dport {} -j ACCEPT", p),
+      )
+      .context("Failed to insert port rule")?;
+  }
 
-    for p in ports.udp_ports {
-        ipt.append("filter", "DIPLONAT", &format!("-p udp --dport {} -j ACCEPT", p)).context("Failed to insert port rule")?;
-    }
+  for p in ports.udp_ports {
+    ipt
+      .append(
+        "filter",
+        "DIPLONAT",
+        &format!("-p udp --dport {} -j ACCEPT", p),
+      )
+      .context("Failed to insert port rule")?;
+  }
 
-    Ok(())
+  Ok(())
 }
 
 pub fn get_opened_ports(ipt: &iptables::IPTables) -> Result<messages::PublicExposedPorts> {
-    let mut ports = messages::PublicExposedPorts {
-        tcp_ports: HashSet::new(),
-        udp_ports: HashSet::new()
-    };
+  let mut ports = messages::PublicExposedPorts {
+    tcp_ports: HashSet::new(),
+    udp_ports: HashSet::new(),
+  };
 
-    let list = ipt.list("filter", "DIPLONAT")?;
-    let re = Regex::new(r"\-A.*? \-p (\w+).*\-\-dport (\d+).*?\-j ACCEPT").context("Regex matching open ports encountered an unexpected rule")?;
-    for i in list {
-        let caps = re.captures(&i);
-        match caps {
-            Some(c) => {
-           
-                if let (Some(raw_proto), Some(raw_port)) = (c.get(1), c.get(2)) {
+  let list = ipt.list("filter", "DIPLONAT")?;
+  let re = Regex::new(r"\-A.*? \-p (\w+).*\-\-dport (\d+).*?\-j ACCEPT")
+    .context("Regex matching open ports encountered an unexpected rule")?;
+  for i in list {
+    let caps = re.captures(&i);
+    match caps {
+      Some(c) => {
+        if let (Some(raw_proto), Some(raw_port)) = (c.get(1), c.get(2)) {
+          let proto = String::from(raw_proto.as_str());
+          let number = String::from(raw_port.as_str()).parse::<u16>()?;
 
-                    let proto = String::from(raw_proto.as_str());
-                    let number = String::from(raw_port.as_str()).parse::<u16>()?;
-
-                    if proto == "tcp" {
-                        ports.tcp_ports.insert(number);
-                    } else {
-                        ports.udp_ports.insert(number);
-                    }
-
-                } else {
-                    error!("Unexpected rule found in DIPLONAT chain")
-                }
-
-            },
-            _ => {}
+          if proto == "tcp" {
+            ports.tcp_ports.insert(number);
+          } else {
+            ports.udp_ports.insert(number);
+          }
+        } else {
+          error!("Unexpected rule found in DIPLONAT chain")
         }
+      }
+      _ => {}
     }
+  }
 
-    Ok(ports)
+  Ok(ports)
 }
 
 pub fn cleanup(ipt: &iptables::IPTables) -> Result<()> {
-    
-    if ipt.chain_exists("filter", "DIPLONAT")? {
-        ipt.flush_chain("filter", "DIPLONAT").context("Failed to flush the DIPLONAT chain")?;
-    
-        if ipt.exists("filter", "INPUT", "-j DIPLONAT")? {
-            ipt.delete("filter", "INPUT", "-j DIPLONAT").context("Failed to delete jump rule")?;
-        }
-    
-        ipt.delete_chain("filter", "DIPLONAT").context("Failed to delete chain")?;
+  if ipt.chain_exists("filter", "DIPLONAT")? {
+    ipt
+      .flush_chain("filter", "DIPLONAT")
+      .context("Failed to flush the DIPLONAT chain")?;
+
+    if ipt.exists("filter", "INPUT", "-j DIPLONAT")? {
+      ipt
+        .delete("filter", "INPUT", "-j DIPLONAT")
+        .context("Failed to delete jump rule")?;
     }
 
-    Ok(())
-}
+    ipt
+      .delete_chain("filter", "DIPLONAT")
+      .context("Failed to delete chain")?;
+  }
 
+  Ok(())
+}

src/fw_actor.rs

@@ -4,18 +4,15 @@ use anyhow::Result;
 use iptables;
 use log::*;
 use tokio::{
-  select, 
-  sync::watch, 
-  time::{
-    Duration,
-    self, 
-}};
+  select,
+  sync::watch,
+  time::{self, Duration},
+};
 
 use crate::config::RuntimeConfigFirewall;
 use crate::fw;
 use crate::messages;
 
-
 pub struct FirewallActor {
   pub ipt: iptables::IPTables,
 
@@ -26,13 +23,16 @@ pub struct FirewallActor {
 }
 
 impl FirewallActor {
-  pub async fn new(config: Option<RuntimeConfigFirewall>, rxp: &watch::Receiver<messages::PublicExposedPorts>) -> Result<Option<Self>> {
+  pub async fn new(
+    config: Option<RuntimeConfigFirewall>,
+    rxp: &watch::Receiver<messages::PublicExposedPorts>,
+  ) -> Result<Option<Self>> {
     if config.is_none() {
       return Ok(None);
     }
     let config = config.unwrap();
 
-    let ctx = Self { 
+    let ctx = Self {
       ipt: iptables::new(false)?,
       last_ports: messages::PublicExposedPorts::new(),
       refresh: config.refresh_time,
@@ -40,7 +40,7 @@ impl FirewallActor {
     };
 
     fw::setup(&ctx.ipt)?;
-    
+
     return Ok(Some(ctx));
   }
 
@@ -55,7 +55,9 @@ impl FirewallActor {
       };
 
       // 2. Update last ports if needed
-      if let Some(p) = new_ports { self.last_ports = p; }
+      if let Some(p) = new_ports {
+        self.last_ports = p;
+      }
 
       // 3. Update firewall rules
       match self.do_fw_update().await {
@@ -68,18 +70,26 @@ impl FirewallActor {
   pub async fn do_fw_update(&self) -> Result<()> {
     let curr_opened_ports = fw::get_opened_ports(&self.ipt)?;
 
-    let diff_tcp = self.last_ports.tcp_ports.difference(&curr_opened_ports.tcp_ports).copied().collect::<HashSet<u16>>();
-    let diff_udp = self.last_ports.udp_ports.difference(&curr_opened_ports.udp_ports).copied().collect::<HashSet<u16>>();
+    let diff_tcp = self
+      .last_ports
+      .tcp_ports
+      .difference(&curr_opened_ports.tcp_ports)
+      .copied()
+      .collect::<HashSet<u16>>();
+    let diff_udp = self
+      .last_ports
+      .udp_ports
+      .difference(&curr_opened_ports.udp_ports)
+      .copied()
+      .collect::<HashSet<u16>>();
 
     let ports_to_open = messages::PublicExposedPorts {
-        tcp_ports: diff_tcp,
-        udp_ports: diff_udp
+      tcp_ports: diff_tcp,
+      udp_ports: diff_udp,
     };
 
     fw::open_ports(&self.ipt, ports_to_open)?;
 
     return Ok(());
   }
-
 }
-

src/igd_actor.rs

@@ -1,16 +1,14 @@
 use std::net::SocketAddrV4;
 
-use anyhow::{Result, Context};
+use anyhow::{Context, Result};
 use igd::aio::*;
 use igd::PortMappingProtocol;
 use log::*;
 use tokio::{
-  select, 
-  sync::watch, 
-  time::{
-    Duration,
-    self, 
-}};
+  select,
+  sync::watch,
+  time::{self, Duration},
+};
 
 use crate::config::RuntimeConfigIgd;
 use crate::messages;
@@ -26,18 +24,21 @@ pub struct IgdActor {
 }
 
 impl IgdActor {
-  pub async fn new(config: Option<RuntimeConfigIgd>, rxp: &watch::Receiver<messages::PublicExposedPorts>) -> Result<Option<Self>> {
+  pub async fn new(
+    config: Option<RuntimeConfigIgd>,
+    rxp: &watch::Receiver<messages::PublicExposedPorts>,
+  ) -> Result<Option<Self>> {
     if config.is_none() {
       return Ok(None);
     }
     let config = config.unwrap();
 
     let gw = search_gateway(Default::default())
-              .await
-              .context("Failed to find IGD gateway")?;
+      .await
+      .context("Failed to find IGD gateway")?;
     info!("IGD gateway: {}", gw);
 
-    let ctx = Self { 
+    let ctx = Self {
       expire: config.expiration_time,
       gateway: gw,
       last_ports: messages::PublicExposedPorts::new(),
@@ -60,7 +61,9 @@ impl IgdActor {
       };
 
       // 2. Update last ports if needed
-      if let Some(p) = new_ports { self.last_ports = p; }
+      if let Some(p) = new_ports {
+        self.last_ports = p;
+      }
 
       // 3. Flush IGD requests
       match self.do_igd().await {
@@ -72,15 +75,26 @@ impl IgdActor {
 
   pub async fn do_igd(&self) -> Result<()> {
     let actions = [
-      (PortMappingProtocol::TCP, &self.last_ports.tcp_ports), 
-      (PortMappingProtocol::UDP, &self.last_ports.udp_ports)
+      (PortMappingProtocol::TCP, &self.last_ports.tcp_ports),
+      (PortMappingProtocol::UDP, &self.last_ports.udp_ports),
     ];
 
     for (proto, list) in actions.iter() {
       for port in *list {
         let service_str = format!("{}:{}", self.private_ip, port);
-        let service  = service_str.parse::<SocketAddrV4>().context("Invalid socket address")?;
-        self.gateway.add_port(*proto, *port, service, self.expire.as_secs() as u32, "diplonat").await?;
+        let service = service_str
+          .parse::<SocketAddrV4>()
+          .context("Invalid socket address")?;
+        self
+          .gateway
+          .add_port(
+            *proto,
+            *port,
+            service,
+            self.expire.as_secs() as u32,
+            "diplonat",
+          )
+          .await?;
         debug!("IGD request successful for {:#?} {}", proto, service);
       }
     }

src/main.rs

@@ -7,8 +7,8 @@ mod fw_actor;
 mod igd_actor;
 mod messages;
 
-use log::*;
 use diplonat::Diplonat;
+use log::*;
 
 #[tokio::main]
 async fn main() {

src/messages.rs

@@ -3,14 +3,14 @@ use std::collections::HashSet;
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct PublicExposedPorts {
   pub tcp_ports: HashSet<u16>,
-  pub udp_ports: HashSet<u16>
+  pub udp_ports: HashSet<u16>,
 }
 
 impl PublicExposedPorts {
   pub fn new() -> Self {
     return Self {
       tcp_ports: HashSet::new(),
-      udp_ports: HashSet::new()
-    }
+      udp_ports: HashSet::new(),
+    };
   }
 }