Changes to be committed:

modified:   Cargo.lock
	modified:   Cargo.toml
	modified:   src/client.rs
	modified:   src/main.rs
	modified:   src/mobile.rs

Cargo.lock

@@ -641,12 +641,6 @@ dependencies = [
  "pin-project-lite",
 ]
 
-[[package]]
-name = "fast32"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27ea9bdb2356e5a92403cf23ac493f9b43bd71e4ffd0f800862b841dd723994c"
-
 [[package]]
 name = "fastrand"
 version = "2.1.1"
@@ -688,7 +682,6 @@ dependencies = [
  "clap",
  "console-subscriber",
  "crossbeam-channel",
- "fast32",
  "futures",
  "generic-array",
  "hex",

Cargo.toml

@@ -41,4 +41,3 @@ jni = "^0.20"
 robusta_jni = "0.2.2"
 android_logger = "0.14.1"
 nonblock = "0.2.0"
-fast32 = "1.0.2"

src/client.rs

@@ -23,7 +23,7 @@ use network_interface::NetworkInterfaceConfig;
 use robusta_jni::jni::JNIEnv;
 use crate::jni::FridaLib;
 
-pub async fn client_mode(client_config: ClientConfiguration, fd: i32, env: &JNIEnv<'_>) {
+pub async fn client_mode(client_config: ClientConfiguration, fd: i32, env: &JNIEnv<'_>, close_token: CancellationToken) {
     let (ltx, lrx) = unbounded::<Vec<u8>>();
     ltx.send("Starting client...".as_bytes().to_vec());
 
@@ -46,7 +46,7 @@ pub async fn client_mode(client_config: ClientConfiguration, fd: i32, env: &JNIE
     let cipher_shared: Arc<Mutex<Option<x25519_dalek::SharedSecret>>> = Arc::new(Mutex::new(None));
 
     let llltx = ltx.clone();
-    tokio::spawn(async move {
+    let dev_read_task = tokio::spawn(async move {
         let mut buf = vec![0; 1400]; // mtu
         loop {
             if let Ok(n) = dev_reader.read(&mut buf).await {
@@ -60,7 +60,7 @@ pub async fn client_mode(client_config: ClientConfiguration, fd: i32, env: &JNIE
     
     let cipher_shared_clone = cipher_shared.clone();
     let sr_ltx = ltx.clone();
-    tokio::spawn(async move {
+    let sock_read_task = tokio::spawn(async move {
         let mut buf = vec![0; 4096];
 
         loop {
@@ -118,6 +118,11 @@ pub async fn client_mode(client_config: ClientConfiguration, fd: i32, env: &JNIE
 
     let s_cipher = cipher_shared.clone();
     loop {
+        if close_token.is_cancelled() {
+            sock_read_task.abort();
+            dev_read_task.abort();
+            return;
+        }
         if let Ok(bytes) = rx.try_recv() {
             ltx.send("Write to tun.".as_bytes().to_vec());
             if let Err(e) = dev_writer.write_all(&bytes).await {
@@ -152,6 +157,4 @@ pub async fn client_mode(client_config: ClientConfiguration, fd: i32, env: &JNIE
         }
         //ltx.send("We've got there!".as_bytes().to_vec());
     }
-
-   
 }

src/main.rs

@@ -23,32 +23,7 @@ mod client;
 mod udp;
 mod mobile;
 
-/*
+static TUN_QUIT: tokio::sync::Mutex<Option<tokio_util::sync::CancellationToken>> = tokio::sync::Mutex::new(None);
-#[no_mangle]
-pub unsafe extern "C" fn Java_com_alterdekim_frida_FridaLib_run(
-    mut env: JNIEnv,
-    _clazz: JClass,
-    config_b32: JString,
-    tun_fd: jint,
-    close_fd_on_drop: jboolean,
-) -> jint {
-    let config = env.get_string(config_b32).unwrap().into();
-    let close_fd_on_drop = close_fd_on_drop != 0;
-    mobile::mobile_run(config, close_fd_on_drop, tun_fd)
-}
-
-#[no_mangle]
-pub unsafe extern "C" fn Java_com_alterdekim_frida_FridaLib_fetchLogs(
-    mut env: JNIEnv,
-    _clazz: JClass
-) -> jstring {
-    **env.new_string(String::from_utf8_lossy(&simple_log::fetch_logs()[..]).to_string()).unwrap()
-}
-
-#[no_mangle]
-pub unsafe extern "C" fn Java_com_alterdekim_frida_FridaLib_stop(_env: JNIEnv, _: JClass) -> jint {
-    mobile::mobile_stop()
-}*/
 
 #[bridge]
 mod jni {
@@ -73,15 +48,48 @@ mod jni {
         pub extern "jni" fn start(self, env: &JNIEnv, config_b32: String,
             tun_fd: i32,
             close_fd_on_drop: bool) -> JniResult<i32> {
-            android_logger::init_once(Config::default().with_tag("RustFrida"));
+            
+            let close_token = tokio_util::sync::CancellationToken::new();
+            if let Ok(mut l) = TUN_QUIT.lock() {
+                if l.is_some() {
+                    return Ok(-1);
+                }
+                *l = Some(close_token.clone());
+            } else {
+                return Ok(-2);
+            }
+
+            let main_loop = async move {
+                if let Err(err) = mobile::mobile_run(config_b32, close_fd_on_drop, tun_fd, env, close_token).await {
+                    FridaLib::traceFromNative(env, format!("main loop error: {}", err));
+                    return Err(err);
+                }
+                Ok(())
+            };
+        
+            let exit_code = match tokio::runtime::Builder::new_multi_thread().enable_all().build() {
+                Err(_e) => -3,
+                Ok(rt) => match rt.block_on(main_loop) {
+                    Ok(_) => 0,
+                    Err(_e) => -4,
+                },
+            };
+        
+            Ok(exit_code)
             
             //FridaLib::traceFromNative(env, "Hello world".to_string());
 
-            Ok(mobile::mobile_run(config_b32, close_fd_on_drop, tun_fd, env))
+            //Ok(mobile::mobile_run(config_b32, close_fd_on_drop, tun_fd, env))
         }
 
         pub extern "jni" fn stop(self, env: &JNIEnv) -> JniResult<i32> {
-            Ok(mobile::mobile_stop())
+            if let Ok(mut l) = TUN_QUIT.lock() {
+                if let Some(close_token) = l.take() {
+                    close_token.cancel();
+                    return Ok(0);
+                }
+            }
+            Ok(-1)
         }
 
         pub extern "java" fn traceFromNative(
@@ -92,38 +100,3 @@ mod jni {
         }
     }
 }
-
-
- /*
-#[tokio::main]
-async fn main() {
-    // Initialize the logger with 'info' as the default level
-    Builder::new()
-        .filter(None, LevelFilter::Info)
-        .init();
-
-    let matches = App::new("Frida")
-        .version("0.1.2")
-        .author("alterwain")
-        .about("VPN software (android port)")
-        .arg(Arg::with_name("config")
-            .long("config")
-            .required(true)
-            .value_name("B32_RAW")
-            .help("Configuration file data (base32 encoded)")
-            .takes_value(true))
-        .arg(Arg::with_name("fd")
-            .long("fd")
-            .required(true)
-            .value_name("INT")
-            .help("File descriptor int")
-            .takes_value(true))
-        .get_matches();
-
-    let cfg_raw = matches.value_of("config").unwrap();
-
-    let config: ClientConfiguration = serde_yaml::from_slice(RFC4648.decode(cfg_raw.as_bytes()).unwrap().as_slice()).expect("Bad client config file structure");
-
-    client::client_mode(config, matches.value_of("fd").unwrap().parse().unwrap()).await;
-}
-    */

src/mobile.rs

@@ -1,4 +1,3 @@
-use std::os::raw::c_int;
 use log::{error, info, warn};
 use crate::config::{ ServerConfiguration, ClientConfiguration, ObfsProtocol, ServerPeer };
 use fast32::base32::RFC4648;
@@ -7,30 +6,7 @@ use jni::sys::jint;
 use tokio::runtime::Runtime;
 use robusta_jni::jni::JNIEnv;
 
-pub fn mobile_run(cfg_raw: String, close_fd_on_drop: bool, tun_fd: i32, env: &JNIEnv) -> c_int {
+pub async fn mobile_run(cfg_raw: String, close_fd_on_drop: bool, tun_fd: i32, env: &JNIEnv, close_token: tokio_util::sync::CancellationToken) {
-    
     let config: ClientConfiguration = serde_yaml::from_slice(hex::decode(cfg_raw).unwrap().as_slice()).expect("Bad client config file structure");
-    Runtime::new().unwrap().block_on(client::client_mode(config, tun_fd, env));
+    client::client_mode(config, tun_fd, env).await;
-    0
-    /*let block = async move {
-        let mut config = tun2::Configuration::default();
-
-        config.raw_fd(tun_fd);
-        config.close_fd_on_drop(close_fd_on_drop);
-
-        let device = tun2::create_as_async(&config).map_err(std::io::Error::from)?;
-        let join_handle = tokio::spawn(run(device, shutdown_token));
-
-        join_handle.await.map_err(std::io::Error::from)?
-    };*/
-}
-
-pub fn mobile_stop() -> c_int {
-    /*if let Ok(mut lock) = TUN_QUIT.lock() {
-        if let Some(shutdown_token) = lock.take() {
-            shutdown_token.cancel();
-            return 0;
-        }
-    }*/
-    -1
 }