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|
use emissary_core::router::Router;
use emissary_core::{Config, Ntcp2Config, SamConfig, TransitConfig};
use emissary_util::reseeder::Reseeder;
use emissary_util::runtime::tokio::Runtime as TokioRuntime;
use emissary_util::storage::{Storage, StorageBundle};
use serde::{Deserialize, Serialize};
use std::future::Future;
use std::path::PathBuf;
use std::sync::Arc;
use tokio::sync::Mutex;
lazy_static::lazy_static! {
pub static ref ROUTER: Arc<Mutex<Option<Router<TokioRuntime>>>> = Arc::new(Mutex::new(None));
}
pub trait RouterUtils {
fn config(&mut self) -> impl Future<Output = Result<(), Box<dyn std::error::Error>>> + Send;
fn reseed(&mut self) -> impl Future<Output = Result<(), Box<dyn std::error::Error>>> + Send;
fn start(
self,
) -> impl Future<Output = Result<Router<TokioRuntime>, Box<dyn std::error::Error>>> + Send;
}
#[derive(Debug, Deserialize, Serialize)]
pub struct EmissaryConfig {
pub storage: Option<PathBuf>,
pub auto_update: Option<bool>,
pub http_proxy_port: Option<u16>,
pub socks_proxy_port: Option<u16>,
}
pub struct Emissary {
config: EmissaryConfig,
storage: Option<Storage>,
storage_bundle: Option<StorageBundle>,
}
impl Emissary {
pub fn new(config: EmissaryConfig) -> Self {
Self {
config,
storage: None,
storage_bundle: None,
}
}
fn ensure_configured(&self) -> Result<(), Box<dyn std::error::Error>> {
if self.storage.is_none() || self.storage_bundle.is_none() {
Err("Router not configured. Call `config()` first.".into())
} else {
Ok(())
}
}
}
impl RouterUtils for Emissary {
async fn config(&mut self) -> Result<(), Box<dyn std::error::Error>> {
if self.config.storage.is_none() {
self.config.storage = Some(PathBuf::from("/var/lib/mesk/router/"));
}
if self.config.auto_update.is_none() {
self.config.auto_update = Some(true);
}
if self.config.http_proxy_port.is_none() {
self.config.http_proxy_port = Some(4445);
}
if self.config.socks_proxy_port.is_none() {
self.config.socks_proxy_port = Some(4446);
}
let storage = Storage::new(Some(self.config.storage.clone().unwrap())).await?;
let bundle = storage.load().await;
self.storage = Some(storage);
self.storage_bundle = Some(bundle);
Ok(())
}
async fn reseed(&mut self) -> Result<(), Box<dyn std::error::Error>> {
self.ensure_configured()?;
let storage = self.storage.as_ref().unwrap();
let mut bundle = self.storage_bundle.take().unwrap();
if bundle.routers.is_empty() {
match Reseeder::reseed(None, false).await {
Ok(reseed_routers) => {
for info in reseed_routers {
if let Err(e) = storage
.store_router_info(info.name.to_string(), info.router_info.clone())
.await
{
println!("Failed to store reseeded router info: {}", e);
}
bundle.routers.push(info.router_info);
}
}
Err(e) => {
if bundle.routers.is_empty() {
self.storage_bundle = Some(bundle);
return Err(format!("Reseed failed and no routers available: {}", e).into());
} else {
println!("Reseed failed, but using existing routers: {}", e);
}
}
}
}
self.storage_bundle = Some(bundle);
Ok(())
}
async fn start(self) -> Result<Router<TokioRuntime>, Box<dyn std::error::Error>> {
let storage = self.storage.unwrap();
let bundle = self.storage_bundle.unwrap();
let config = Config {
ntcp2: Some(Ntcp2Config {
port: 25515,
key: bundle.ntcp2_key,
iv: bundle.ntcp2_iv,
publish: true,
host: None,
}),
samv3_config: Some(SamConfig {
tcp_port: self.config.http_proxy_port.unwrap_or(4445),
udp_port: self.config.socks_proxy_port.unwrap_or(4446),
host: "127.0.0.1".to_string(),
}),
routers: bundle.routers,
profiles: bundle.profiles,
router_info: bundle.router_info,
static_key: Some(bundle.static_key),
signing_key: Some(bundle.signing_key),
transit: Some(TransitConfig {
max_tunnels: Some(1000),
}),
..Default::default()
};
let (router, _events, router_info) = Router::<TokioRuntime>::new(
config,
None, // AddressBook
Some(Arc::new(storage.clone())),
)
.await
.map_err(|e| format!("Router creation failed: {}", e))?;
storage.store_local_router_info(router_info).await?;
Ok(router)
}
}
|
