Android Support (#166)

1. Add vpnservice tauri plugin for android.
2. add workflow for android.
3. Easytier Core support android, allow set tun fd.

tauri-plugin-vpnservice/src/error.rs

@@ -0,0 +1,21 @@
+use serde::{ser::Serializer, Serialize};
+
+pub type Result<T> = std::result::Result<T, Error>;
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+  #[error(transparent)]
+  Io(#[from] std::io::Error),
+  #[cfg(mobile)]
+  #[error(transparent)]
+  PluginInvoke(#[from] tauri::plugin::mobile::PluginInvokeError),
+}
+
+impl Serialize for Error {
+  fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+  where
+    S: Serializer,
+  {
+    serializer.serialize_str(self.to_string().as_ref())
+  }
+}

tauri-plugin-vpnservice/src/lib.rs

@@ -0,0 +1,45 @@
+use tauri::{
+    plugin::{Builder, TauriPlugin},
+    Runtime,
+};
+
+#[cfg(mobile)]
+use tauri::Manager;
+
+#[cfg(mobile)]
+mod mobile;
+
+#[cfg(mobile)]
+use mobile::Vpnservice;
+
+mod error;
+mod models;
+
+pub use error::{Error, Result};
+
+/// Extensions to [`tauri::App`], [`tauri::AppHandle`] and [`tauri::Window`] to access the vpnservice APIs.
+#[cfg(mobile)]
+pub trait VpnserviceExt<R: Runtime> {
+    fn vpnservice(&self) -> &Vpnservice<R>;
+}
+
+#[cfg(mobile)]
+impl<R: Runtime, T: Manager<R>> crate::VpnserviceExt<R> for T {
+    fn vpnservice(&self) -> &Vpnservice<R> {
+        self.state::<Vpnservice<R>>().inner()
+    }
+}
+
+/// Initializes the plugin.
+pub fn init<R: Runtime>() -> TauriPlugin<R> {
+    Builder::new("vpnservice")
+        .setup(|_app, _api| {
+            #[cfg(mobile)]
+            {
+                let vpnservice = mobile::init(_app, _api)?;
+                _app.manage(vpnservice);
+            }
+            Ok(())
+        })
+        .build()
+}

tauri-plugin-vpnservice/src/mobile.rs

@@ -0,0 +1,54 @@
+use serde::de::DeserializeOwned;
+use tauri::{
+    plugin::{PluginApi, PluginHandle},
+    AppHandle, Runtime,
+};
+
+use crate::models::*;
+
+#[cfg(target_os = "android")]
+const PLUGIN_IDENTIFIER: &str = "com.plugin.vpnservice";
+
+#[cfg(target_os = "ios")]
+tauri::ios_plugin_binding!(init_plugin_vpnservice);
+
+// initializes the Kotlin or Swift plugin classes
+pub fn init<R: Runtime, C: DeserializeOwned>(
+    _app: &AppHandle<R>,
+    api: PluginApi<R, C>,
+) -> crate::Result<Vpnservice<R>> {
+    #[cfg(target_os = "android")]
+    let handle = api.register_android_plugin(PLUGIN_IDENTIFIER, "VpnServicePlugin")?;
+    #[cfg(target_os = "ios")]
+    let handle = api.register_ios_plugin(init_plugin_vpnservice)?;
+    Ok(Vpnservice(handle))
+}
+
+/// Access to the vpnservice APIs.
+pub struct Vpnservice<R: Runtime>(PluginHandle<R>);
+
+impl<R: Runtime> Vpnservice<R> {
+    pub fn ping(&self, payload: PingRequest) -> crate::Result<PingResponse> {
+        self.0
+            .run_mobile_plugin("ping", payload)
+            .map_err(Into::into)
+    }
+
+    pub fn prepare_vpn(&self, payload: VoidRequest) -> crate::Result<Status> {
+        self.0
+            .run_mobile_plugin("prepare_vpn", payload)
+            .map_err(Into::into)
+    }
+
+    pub fn start_vpn(&self, payload: StartVpnRequest) -> crate::Result<Status> {
+        self.0
+            .run_mobile_plugin("start_vpn", payload)
+            .map_err(Into::into)
+    }
+
+    pub fn stop_vpn(&self, payload: VoidRequest) -> crate::Result<Status> {
+        self.0
+            .run_mobile_plugin("stop_vpn", payload)
+            .map_err(Into::into)
+    }
+}

tauri-plugin-vpnservice/src/models.rs

@@ -0,0 +1,33 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PingRequest {
+    pub value: Option<String>,
+}
+
+#[derive(Debug, Clone, Default, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PingResponse {
+    pub value: Option<String>,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct VoidRequest {}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct StartVpnRequest {
+    pub ipv4_addr: Option<String>,
+    pub routes: Option<Vec<String>>,
+    pub dns: Option<String>,
+    pub disallowed_applications: Option<Vec<String>>,
+    pub mtu: Option<u32>,
+}
+
+#[derive(Debug, Clone, Default, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Status {
+    pub error_msg: Option<String>,
+}