Adapt tests to use the setup functionality

tests/proxy.rs

@@ -3,25 +3,22 @@ mod tests {
     extern crate reqwest;
 
     use std::env;
-    use std::io::BufRead;
-    use std::net::SocketAddr;
-    use std::process::Command;
 
     use fork::Fork;
     use nix::sys::signal;
     use nix::unistd::Pid;
     use serial_test::serial;
 
+    use tun2proxy::setup::{get_default_cidrs, Setup};
     use tun2proxy::{main_entry, Options, Proxy, ProxyType};
 
-    static TUN_TEST_DEVICE: &str = "tun0";
-    static ALL_ROUTES: [&str; 4] = ["0.0.0.0/1", "128.0.0.0/1", "::/1", "8000::/1"];
-
     #[derive(Clone, Debug)]
     struct Test {
         proxy: Proxy,
     }
 
+    static TUN_TEST_DEVICE: &str = "tun0";
+
     fn proxy_from_env(env_var: &str) -> Result<Proxy, String> {
         let url =
             env::var(env_var).map_err(|_| format!("{env_var} environment variable not found"))?;
@@ -45,77 +42,6 @@ mod tests {
     #[ctor::ctor]
     fn init() {
         dotenvy::dotenv().ok();
-        routes_setup();
-    }
-
-    #[cfg(test)]
-    #[ctor::dtor]
-    fn cleanup() {
-        Command::new("ip")
-            .args(["link", "del", TUN_TEST_DEVICE])
-            .output()
-            .expect("failed to delete tun device");
-    }
-
-    fn routes_setup() {
-        let mut all_servers: Vec<SocketAddr> = Vec::new();
-
-        for test in tests() {
-            if test.is_err() {
-                continue;
-            }
-            all_servers.push(test.unwrap().proxy.addr);
-        }
-
-        Command::new("ip")
-            .args(["tuntap", "add", "name", TUN_TEST_DEVICE, "mode", "tun"])
-            .output()
-            .expect("failed to create tun device");
-
-        Command::new("ip")
-            .args(["link", "set", TUN_TEST_DEVICE, "up"])
-            .output()
-            .expect("failed to bring up tun device");
-
-        let routes = Command::new("ip")
-            .args(["route", "show"])
-            .output()
-            .expect("failed to get routing table");
-
-        // Equivalent of `ip route | grep '^default' | cut -d ' ' -f 2-`
-        let mut default_route_args = Vec::<String>::new();
-        for result in routes.stdout.lines() {
-            let line = result.unwrap();
-            let split = line.split_whitespace();
-            for (i, route_component) in split.enumerate() {
-                if i == 0 && route_component != "default" {
-                    break;
-                } else if i == 0 {
-                    continue;
-                }
-                default_route_args.push(String::from(route_component));
-            }
-            if !default_route_args.is_empty() {
-                break;
-            }
-        }
-
-        for server in all_servers {
-            let mut proxy_route = vec!["route".to_string(), "add".to_string()];
-            proxy_route.push(server.ip().to_string());
-            proxy_route.extend(default_route_args.clone());
-            Command::new("ip")
-                .args(proxy_route)
-                .output()
-                .expect("failed to get routing table");
-        }
-
-        for route in ALL_ROUTES {
-            Command::new("ip")
-                .args(["route", "add", route, "dev", TUN_TEST_DEVICE])
-                .output()
-                .expect("failed to add route");
-        }
     }
 
     fn request_ip_host_http() {
@@ -141,13 +67,20 @@ mod tests {
                     match fork::fork() {
                         Ok(Fork::Parent(child)) => {
                             test_function();
-                            signal::kill(Pid::from_raw(child), signal::SIGKILL)
+                            signal::kill(Pid::from_raw(child), signal::SIGINT)
                                 .expect("failed to kill child");
                             nix::sys::wait::waitpid(Pid::from_raw(child), None)
                                 .expect("failed to wait for child");
                         }
                         Ok(Fork::Child) => {
                             prctl::set_death_signal(signal::SIGKILL as isize).unwrap(); // 9 == SIGKILL
+
+                            let _setup = Setup::new(
+                                TUN_TEST_DEVICE,
+                                &test.proxy.addr.ip(),
+                                get_default_cidrs(),
+                                false,
+                            );
                             let _ = main_entry(
                                 TUN_TEST_DEVICE,
                                 test.proxy,