src/base/err_utils.rs

@@ -1,7 +1,12 @@
-use std::error::Error;
+use std::fmt::Display;
 use std::io::ErrorKind;
 
 /// Encapsulate errors in [`std::io::Error`] with a message
-pub fn encpasulate_error<E: Error>(e: E, msg: &str) -> std::io::Error {
+pub fn encpasulate_error<E: Display>(e: E, msg: &str) -> std::io::Error {
     std::io::Error::new(ErrorKind::Other, format!("{}: {}", msg, e))
 }
+
+/// Create a new [`std::io::Error`]
+pub fn new_err(msg: &str) -> std::io::Error {
+    std::io::Error::new(ErrorKind::Other, msg.to_string())
+}

src/tcp_relay_server/mod.rs

@@ -3,7 +3,7 @@ use std::sync::Arc;
 use actix_web::web::Data;
 use actix_web::{middleware, web, App, HttpRequest, HttpResponse, HttpServer, Responder};
 
-use crate::base::err_utils::encpasulate_error;
+use crate::base::err_utils::{encpasulate_error, new_err};
 use crate::base::{cert_utils, RelayedPort};
 use crate::tcp_relay_server::relay_ws::relay_ws;
 use crate::tcp_relay_server::server_config::ServerConfig;
@@ -47,8 +47,7 @@ pub async fn config_route(req: HttpRequest, data: Data<Arc<ServerConfig>>) -> im
 pub async fn run_app(mut config: ServerConfig) -> std::io::Result<()> {
     // Check if no port are to be forwarded
     if config.ports.is_empty() {
-        log::error!("No port to forward!");
+        return Err(new_err("No port to forward!"));
-        std::process::exit(2);
     }
 
     // Read tokens from file, if any
@@ -61,13 +60,17 @@ pub async fn run_app(mut config: ServerConfig) -> std::io::Result<()> {
     }
 
     if !config.has_auth() {
-        log::error!("No authentication method specified!");
+        return Err(new_err("No authentication method specified!"));
-        std::process::exit(3);
+    }
+
+    if config.tls_cert.is_some() != config.tls_key.is_some() {
+        return Err(new_err("Incomplete server TLS configuration!"));
     }
 
     if config.has_tls_client_auth() && !config.has_tls_config() {
-        log::error!("Cannot provide client auth without TLS configuration!");
+        return Err(new_err(
-        panic!();
+            "Cannot provide client auth without TLS configuration!",
+        ));
     }
 
     let args = Arc::new(config);
@@ -75,16 +78,18 @@ pub async fn run_app(mut config: ServerConfig) -> std::io::Result<()> {
     // Load TLS configuration, if any
     let tls_config = if let (Some(cert), Some(key)) = (&args.tls_cert, &args.tls_key) {
         // Load TLS certificate & private key
-        let cert_file = std::fs::read(cert).expect("Failed to read certificate file");
+        let cert_file = std::fs::read(cert)
-        let key_file = std::fs::read(key).expect("Failed to read server private key");
+            .map_err(|e| encpasulate_error(e, "Failed to read certificate file"))?;
+        let key_file = std::fs::read(key)
+            .map_err(|e| encpasulate_error(e, "Failed to read server private key"))?;
 
         // Get certificates chain
-        let cert_chain =
+        let cert_chain = cert_utils::parse_pem_certificates(&cert_file)
-            cert_utils::parse_pem_certificates(&cert_file).expect("Failed to extract certificates");
+            .map_err(|e| encpasulate_error(e, "Failed to extract certificates"))?;
 
         // Get private key
-        let key =
+        let key = cert_utils::parse_pem_private_key(&key_file)
-            cert_utils::parse_pem_private_key(&key_file).expect("Failed to extract private key!");
+            .map_err(|e| encpasulate_error(e, "Failed to extract private key!"))?;
 
         let config = rustls::ServerConfig::builder().with_safe_defaults();
 

src/test/dummy_tcp_sockets.rs

@@ -130,10 +130,10 @@ pub async fn dummy_tcp_client_read_conn(port: u16) -> Vec<u8> {
         .await
         .expect("Failed to connect to dummy TCP server!");
 
-    let mut buff = Vec::with_capacity(100);
+    let mut buff: [u8; 100] = [0; 100];
-    socket.read_to_end(&mut buff).await.unwrap();
+    let size = socket.read(&mut buff).await.unwrap();
 
-    buff
+    buff[0..size].to_vec()
 }
 
 pub async fn dummy_tcp_client_write_then_read_conn(port: u16, data: &[u8]) -> Vec<u8> {

src/test/invalid_token_file.rs

@@ -4,7 +4,7 @@ use crate::test::{get_port_number, PortsAllocation};
 const INVALID_TOKEN: &str = "/tmp/a/token/file/that/does/not/exists";
 
 fn port(index: u16) -> u16 {
-    get_port_number(PortsAllocation::InvalidTokenFile, index)
+    get_port_number(PortsAllocation::TestsWithoutPortOpened, index)
 }
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 5)]

src/test/mod.rs

@@ -1,11 +1,11 @@
 #[non_exhaustive]
 enum PortsAllocation {
+    TestsWithoutPortOpened,
     DummyTCPServer,
     ValidWithTokenAuth,
     InvalidWithTokenAuth,
     ValidWithMultipleTokenAuth,
     ValidWithTokenFile,
-    InvalidTokenFile,
     ClientTryTLSWhileThereIsNoTLS,
     ValidTokenWithCustomIncrement,
     ValidWithTokenAuthMultiplePorts,
@@ -15,7 +15,7 @@ enum PortsAllocation {
 }
 
 fn get_port_number(alloc: PortsAllocation, index: u16) -> u16 {
-    2100 + 20 * (alloc as u16) + index
+    30000 + 20 * (alloc as u16) + index
 }
 
 const LOCALHOST_IP: &str = "127.0.0.1";
@@ -27,6 +27,10 @@ mod test_files_utils;
 mod client_try_tls_while_there_is_no_tls;
 mod invalid_token_file;
 mod invalid_with_token_auth;
+mod server_invalid_tls_config_invalid_cert;
+mod server_invalid_tls_config_invalid_key;
+mod server_invalid_tls_config_invalid_paths;
+mod server_invalid_tls_config_missing_key;
 mod valid_token_with_custom_increment;
 mod valid_with_multiple_token_auth;
 mod valid_with_token_auth;

src/test/server_invalid_tls_config_invalid_cert.rs

@@ -0,0 +1,31 @@
+use crate::tcp_relay_server::server_config::ServerConfig;
+use crate::test::pki::Pki;
+use crate::test::{get_port_number, PortsAllocation};
+
+const TOKEN: &str = "mytok";
+
+fn port(index: u16) -> u16 {
+    get_port_number(PortsAllocation::TestsWithoutPortOpened, index)
+}
+
+#[tokio::test]
+async fn test() {
+    let _ = env_logger::builder().is_test(true).try_init();
+
+    let pki = Pki::load();
+
+    crate::tcp_relay_server::run_app(ServerConfig {
+        tokens: vec![TOKEN.to_string()],
+        tokens_file: None,
+        ports: vec![port(1)],
+        upstream_server: "127.0.0.1".to_string(),
+        listen_address: format!("127.0.0.1:{}", port(0)),
+        increment_ports: 1,
+        tls_cert: Some(pki.root_ca_crl.file_path()),
+        tls_key: Some(pki.localhost_key.file_path()),
+        tls_client_auth_root_cert: None,
+        tls_revocation_list: None,
+    })
+    .await
+    .unwrap_err();
+}

src/test/server_invalid_tls_config_invalid_key.rs

@@ -0,0 +1,31 @@
+use crate::tcp_relay_server::server_config::ServerConfig;
+use crate::test::pki::Pki;
+use crate::test::{get_port_number, PortsAllocation};
+
+const TOKEN: &str = "mytok";
+
+fn port(index: u16) -> u16 {
+    get_port_number(PortsAllocation::TestsWithoutPortOpened, index)
+}
+
+#[tokio::test]
+async fn test() {
+    let _ = env_logger::builder().is_test(true).try_init();
+
+    let pki = Pki::load();
+
+    crate::tcp_relay_server::run_app(ServerConfig {
+        tokens: vec![TOKEN.to_string()],
+        tokens_file: None,
+        ports: vec![port(1)],
+        upstream_server: "127.0.0.1".to_string(),
+        listen_address: format!("127.0.0.1:{}", port(0)),
+        increment_ports: 1,
+        tls_cert: Some(pki.root_ca_crt.file_path()),
+        tls_key: Some(pki.root_ca_crt.file_path()),
+        tls_client_auth_root_cert: None,
+        tls_revocation_list: None,
+    })
+    .await
+    .unwrap_err();
+}

src/test/server_invalid_tls_config_invalid_paths.rs

@@ -0,0 +1,53 @@
+use crate::tcp_relay_server::server_config::ServerConfig;
+use crate::test::pki::Pki;
+use crate::test::{get_port_number, PortsAllocation};
+
+const TOKEN: &str = "mytok";
+
+fn port(index: u16) -> u16 {
+    get_port_number(PortsAllocation::TestsWithoutPortOpened, index)
+}
+
+#[tokio::test]
+async fn invalid_key_path() {
+    let _ = env_logger::builder().is_test(true).try_init();
+
+    let pki = Pki::load();
+
+    crate::tcp_relay_server::run_app(ServerConfig {
+        tokens: vec![TOKEN.to_string()],
+        tokens_file: None,
+        ports: vec![port(1)],
+        upstream_server: "127.0.0.1".to_string(),
+        listen_address: format!("127.0.0.1:{}", port(0)),
+        increment_ports: 1,
+        tls_cert: Some(pki.localhost_crt.file_path()),
+        tls_key: Some("/bad/path/to/key/file".to_string()),
+        tls_client_auth_root_cert: None,
+        tls_revocation_list: None,
+    })
+    .await
+    .unwrap_err();
+}
+
+#[tokio::test]
+async fn invalid_cert_path() {
+    let _ = env_logger::builder().is_test(true).try_init();
+
+    let pki = Pki::load();
+
+    crate::tcp_relay_server::run_app(ServerConfig {
+        tokens: vec![TOKEN.to_string()],
+        tokens_file: None,
+        ports: vec![port(1)],
+        upstream_server: "127.0.0.1".to_string(),
+        listen_address: format!("127.0.0.1:{}", port(0)),
+        increment_ports: 1,
+        tls_cert: Some("/bad/path/to/key/file".to_string()),
+        tls_key: Some(pki.localhost_key.file_path()),
+        tls_client_auth_root_cert: None,
+        tls_revocation_list: None,
+    })
+    .await
+    .unwrap_err();
+}

src/test/server_invalid_tls_config_missing_key.rs

@@ -0,0 +1,31 @@
+use crate::tcp_relay_server::server_config::ServerConfig;
+use crate::test::pki::Pki;
+use crate::test::{get_port_number, PortsAllocation};
+
+const TOKEN: &str = "mytok";
+
+fn port(index: u16) -> u16 {
+    get_port_number(PortsAllocation::TestsWithoutPortOpened, index)
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn test() {
+    let _ = env_logger::builder().is_test(true).try_init();
+
+    let pki = Pki::load();
+
+    crate::tcp_relay_server::run_app(ServerConfig {
+        tokens: vec![TOKEN.to_string()],
+        tokens_file: None,
+        ports: vec![port(1)],
+        upstream_server: "127.0.0.1".to_string(),
+        listen_address: format!("127.0.0.1:{}", port(0)),
+        increment_ports: 1,
+        tls_cert: Some(pki.root_ca_crt.file_path()),
+        tls_key: None,
+        tls_client_auth_root_cert: None,
+        tls_revocation_list: None,
+    })
+    .await
+    .unwrap_err();
+}