beginning async version (#84)

src/ios.rs

@@ -0,0 +1,41 @@
+#![cfg(target_os = "ios")]
+
+use crate::{
+    args::{ArgDns, ArgProxy},
+    ArgVerbosity, Args,
+};
+use std::os::raw::{c_char, c_int, c_uint};
+
+/// # Safety
+///
+/// Run the tun2proxy component with some arguments.
+#[no_mangle]
+pub unsafe extern "C" fn tun2proxy_run(
+    proxy_url: *const c_char,
+    tun_fd: c_int,
+    tun_mtu: c_uint,
+    dns_over_tcp: c_char,
+    verbose: c_char,
+) -> c_int {
+    use log::LevelFilter;
+    let log_level = if verbose != 0 { LevelFilter::Trace } else { LevelFilter::Info };
+    log::set_max_level(log_level);
+    log::set_boxed_logger(Box::<crate::dump_logger::DumpLogger>::default()).unwrap();
+
+    let dns = if dns_over_tcp != 0 { ArgDns::OverTcp } else { ArgDns::Direct };
+    let verbosity = if verbose != 0 { ArgVerbosity::Trace } else { ArgVerbosity::Info };
+    let proxy_url = std::ffi::CStr::from_ptr(proxy_url).to_str().unwrap();
+    let proxy = ArgProxy::from_url(proxy_url).unwrap();
+
+    let args = Args::new(Some(tun_fd), proxy, dns, verbosity);
+
+    crate::api::tun2proxy_internal_run(args, tun_mtu as _)
+}
+
+/// # Safety
+///
+/// Shutdown the tun2proxy component.
+#[no_mangle]
+pub unsafe extern "C" fn tun2proxy_stop() -> c_int {
+    crate::api::tun2proxy_internal_stop()
+}