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#![cfg(target_os = "android")]
use crate::{
args::ArgProxy,
error::{Error, Result},
Args,
};
use jni::{
objects::{JClass, JString},
sys::{jchar, jint},
JNIEnv,
};
/// # Safety
///
/// Running tun2proxy
#[no_mangle]
pub unsafe extern "C" fn Java_com_github_shadowsocks_bg_Tun2proxy_run(
mut env: JNIEnv,
_clazz: JClass,
proxy_url: JString,
tun_fd: jint,
tun_mtu: jchar,
verbosity: jint,
dns_strategy: jint,
) -> jint {
let dns = dns_strategy.try_into().unwrap();
let verbosity = verbosity.try_into().unwrap();
let filter_str = &format!("off,tun2proxy={verbosity}");
let filter = android_logger::FilterBuilder::new().parse(filter_str).build();
android_logger::init_once(
android_logger::Config::default()
.with_tag("tun2proxy")
.with_max_level(log::LevelFilter::Trace)
.with_filter(filter),
);
let proxy_url = get_java_string(&mut env, &proxy_url).unwrap();
let proxy = ArgProxy::try_from(proxy_url).unwrap();
let mut args = Args::default();
args.proxy(proxy).tun_fd(Some(tun_fd)).dns(dns).verbosity(verbosity);
crate::mobile_api::mobile_run(args, tun_mtu, false)
}
/// # Safety
///
/// Shutdown tun2proxy
#[no_mangle]
pub unsafe extern "C" fn Java_com_github_shadowsocks_bg_Tun2proxy_stop(_env: JNIEnv, _: JClass) -> jint {
crate::mobile_api::mobile_stop()
}
unsafe fn get_java_string<'a>(env: &'a mut JNIEnv, string: &'a JString) -> Result<&'a str, Error> {
let str_ptr = env.get_string(string)?.as_ptr();
let s: &str = std::ffi::CStr::from_ptr(str_ptr).to_str()?;
Ok(s)
}