Add SOCKS5 server to test-manager

Author: dlon

test/Cargo.lock

@@ -11,6 +11,7 @@ rust-version.workspace = true
 workspace = true
 
 [dependencies]
+fast-socks5 = "0.9.5"
 anyhow = { version = "1", features = ["backtrace"] }
 futures = { workspace = true }
 regex = "1"

test/test-manager/Cargo.toml

@@ -14,6 +14,8 @@ use std::path::PathBuf;
 use anyhow::Context;
 use anyhow::Result;
 use clap::Parser;
+use futures::StreamExt;
+use std::net::SocketAddr;
 use tests::config::DEFAULT_MULLVAD_HOST;
 
 /// Test manager for Mullvad VPN app
@@ -248,6 +250,34 @@ async fn main() -> Result<()> {
                 .await
                 .context("Failed to run provisioning for VM")?;
 
+            let socks_server: fast_socks5::server::Socks5Server =
+                fast_socks5::server::Socks5Server::bind(SocketAddr::new(
+                    crate::vm::network::NON_TUN_GATEWAY.into(),
+                    crate::vm::network::SOCKS5_PORT,
+                ))
+                .await
+                .context("Failed to start SOCKS5 server")?;
+            let socks_server = tokio::spawn(async move {
+                let mut incoming = socks_server.incoming();
+
+                while let Some(new_client) = incoming.next().await {
+                    match new_client {
+                        Ok(socket) => {
+                            let fut = socket.upgrade_to_socks5();
+                            tokio::spawn(async move {
+                                match fut.await {
+                                    Ok(socket) => log::info!("socks client disconnected"),
+                                    Err(error) => log::error!("socks client failed: {error}"),
+                                }
+                            });
+                        }
+                        Err(error) => {
+                            log::error!("failed to accept socks client: {error}");
+                        }
+                    }
+                }
+            });
+
             let skip_wait = vm_config.provisioner != config::Provisioner::Noop;
 
             let result = run_tests::run(
@@ -291,6 +321,7 @@ async fn main() -> Result<()> {
             if display {
                 instance.wait().await;
             }
+            socks_server.abort();
             result
         }
         Commands::FormatTestReports { reports } => {

test/test-manager/src/main.rs

@@ -15,3 +15,6 @@ pub use platform::{
     CUSTOM_TUN_REMOTE_REAL_PORT, CUSTOM_TUN_REMOTE_TUN_ADDR, DUMMY_LAN_INTERFACE_IP,
     NON_TUN_GATEWAY,
 };
+
+/// Port on NON_TUN_GATEWAY that hosts a SOCKS5 server
+pub const SOCKS5_PORT: u16 = 54321;