mirror of
https://github.com/rustdesk/rustdesk.git
synced 2024-12-15 03:59:04 +08:00
554 lines
18 KiB
Rust
554 lines
18 KiB
Rust
use std::{
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collections::HashMap,
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net::SocketAddr,
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sync::{Arc, Mutex, RwLock, Weak},
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time::Duration,
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};
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use bytes::Bytes;
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pub use connection::*;
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#[cfg(not(any(target_os = "android", target_os = "ios")))]
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use hbb_common::config::Config2;
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use hbb_common::tcp::new_listener;
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use hbb_common::{
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allow_err,
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anyhow::{anyhow, Context},
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bail,
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config::{Config, CONNECT_TIMEOUT, RELAY_PORT},
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log,
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message_proto::*,
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protobuf::{Enum, Message as _},
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rendezvous_proto::*,
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socket_client,
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sodiumoxide::crypto::{box_, secretbox, sign},
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timeout, tokio, ResultType, Stream,
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};
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#[cfg(not(any(target_os = "android", target_os = "ios")))]
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use service::ServiceTmpl;
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use service::{GenericService, Service, Subscriber};
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use crate::ipc::Data;
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pub mod audio_service;
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cfg_if::cfg_if! {
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if #[cfg(not(any(target_os = "android", target_os = "ios")))] {
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mod clipboard_service;
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#[cfg(target_os = "linux")]
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pub(crate) mod wayland;
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#[cfg(target_os = "linux")]
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pub mod uinput;
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#[cfg(target_os = "linux")]
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pub mod dbus;
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pub mod input_service;
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} else {
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mod clipboard_service {
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pub const NAME: &'static str = "";
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}
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pub mod input_service {
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pub const NAME_CURSOR: &'static str = "";
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pub const NAME_POS: &'static str = "";
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}
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}
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}
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mod connection;
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#[cfg(windows)]
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pub mod portable_service;
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mod service;
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mod video_qos;
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pub mod video_service;
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pub type Childs = Arc<Mutex<Vec<std::process::Child>>>;
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type ConnMap = HashMap<i32, ConnInner>;
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lazy_static::lazy_static! {
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pub static ref CHILD_PROCESS: Childs = Default::default();
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pub static ref CONN_COUNT: Arc<Mutex<usize>> = Default::default();
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// A client server used to provide local services(audio, video, clipboard, etc.)
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// for all initiative connections.
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//
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// [Note]
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// Now we use this [`CLIENT_SERVER`] to do following operations:
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// - record local audio, and send to remote
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pub static ref CLIENT_SERVER: ServerPtr = new();
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}
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pub struct Server {
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connections: ConnMap,
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services: HashMap<&'static str, Box<dyn Service>>,
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id_count: i32,
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}
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pub type ServerPtr = Arc<RwLock<Server>>;
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pub type ServerPtrWeak = Weak<RwLock<Server>>;
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pub fn new() -> ServerPtr {
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let mut server = Server {
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connections: HashMap::new(),
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services: HashMap::new(),
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id_count: 0,
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};
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server.add_service(Box::new(audio_service::new()));
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server.add_service(Box::new(video_service::new()));
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#[cfg(not(any(target_os = "android", target_os = "ios")))]
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{
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server.add_service(Box::new(clipboard_service::new()));
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if !video_service::capture_cursor_embedded() {
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server.add_service(Box::new(input_service::new_cursor()));
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server.add_service(Box::new(input_service::new_pos()));
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}
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}
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Arc::new(RwLock::new(server))
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}
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async fn accept_connection_(server: ServerPtr, socket: Stream, secure: bool) -> ResultType<()> {
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let local_addr = socket.local_addr();
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drop(socket);
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// even we drop socket, below still may fail if not use reuse_addr,
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// there is TIME_WAIT before socket really released, so sometimes we
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// see “Only one usage of each socket address is normally permitted” on windows sometimes,
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let listener = new_listener(local_addr, true).await?;
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log::info!("Server listening on: {}", &listener.local_addr()?);
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if let Ok((stream, addr)) = timeout(CONNECT_TIMEOUT, listener.accept()).await? {
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stream.set_nodelay(true).ok();
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let stream_addr = stream.local_addr()?;
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create_tcp_connection(server, Stream::from(stream, stream_addr), addr, secure).await?;
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}
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Ok(())
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}
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async fn check_privacy_mode_on(stream: &mut Stream) -> ResultType<()> {
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if video_service::get_privacy_mode_conn_id() > 0 {
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let msg_out =
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crate::common::make_privacy_mode_msg(back_notification::PrivacyModeState::PrvOnByOther);
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timeout(CONNECT_TIMEOUT, stream.send(&msg_out)).await??;
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}
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Ok(())
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}
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pub async fn create_tcp_connection(
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server: ServerPtr,
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stream: Stream,
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addr: SocketAddr,
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secure: bool,
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) -> ResultType<()> {
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let mut stream = stream;
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check_privacy_mode_on(&mut stream).await?;
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let id = {
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let mut w = server.write().unwrap();
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w.id_count += 1;
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w.id_count
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};
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let (sk, pk) = Config::get_key_pair();
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if secure && pk.len() == sign::PUBLICKEYBYTES && sk.len() == sign::SECRETKEYBYTES {
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let mut sk_ = [0u8; sign::SECRETKEYBYTES];
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sk_[..].copy_from_slice(&sk);
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let sk = sign::SecretKey(sk_);
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let mut msg_out = Message::new();
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let (our_pk_b, our_sk_b) = box_::gen_keypair();
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msg_out.set_signed_id(SignedId {
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id: sign::sign(
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&IdPk {
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id: Config::get_id(),
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pk: Bytes::from(our_pk_b.0.to_vec()),
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..Default::default()
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}
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.write_to_bytes()
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.unwrap_or_default(),
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&sk,
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)
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.into(),
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..Default::default()
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});
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timeout(CONNECT_TIMEOUT, stream.send(&msg_out)).await??;
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match timeout(CONNECT_TIMEOUT, stream.next()).await? {
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Some(res) => {
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let bytes = res?;
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if let Ok(msg_in) = Message::parse_from_bytes(&bytes) {
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if let Some(message::Union::PublicKey(pk)) = msg_in.union {
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if pk.asymmetric_value.len() == box_::PUBLICKEYBYTES {
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let nonce = box_::Nonce([0u8; box_::NONCEBYTES]);
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let mut pk_ = [0u8; box_::PUBLICKEYBYTES];
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pk_[..].copy_from_slice(&pk.asymmetric_value);
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let their_pk_b = box_::PublicKey(pk_);
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let symmetric_key =
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box_::open(&pk.symmetric_value, &nonce, &their_pk_b, &our_sk_b)
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.map_err(|_| {
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anyhow!("Handshake failed: box decryption failure")
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})?;
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if symmetric_key.len() != secretbox::KEYBYTES {
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bail!("Handshake failed: invalid secret key length from peer");
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}
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let mut key = [0u8; secretbox::KEYBYTES];
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key[..].copy_from_slice(&symmetric_key);
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stream.set_key(secretbox::Key(key));
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} else if pk.asymmetric_value.is_empty() {
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Config::set_key_confirmed(false);
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log::info!("Force to update pk");
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} else {
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bail!("Handshake failed: invalid public sign key length from peer");
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}
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} else {
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log::error!("Handshake failed: invalid message type");
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}
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} else {
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bail!("Handshake failed: invalid message format");
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}
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}
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None => {
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bail!("Failed to receive public key");
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}
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}
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}
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#[cfg(target_os = "macos")]
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{
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use std::process::Command;
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Command::new("/usr/bin/caffeinate")
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.arg("-u")
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.arg("-t 5")
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.spawn()
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.ok();
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log::info!("wake up macos");
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}
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Connection::start(addr, stream, id, Arc::downgrade(&server)).await;
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Ok(())
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}
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pub async fn accept_connection(
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server: ServerPtr,
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socket: Stream,
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peer_addr: SocketAddr,
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secure: bool,
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) {
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if let Err(err) = accept_connection_(server, socket, secure).await {
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log::error!("Failed to accept connection from {}: {}", peer_addr, err);
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}
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}
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pub async fn create_relay_connection(
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server: ServerPtr,
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relay_server: String,
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uuid: String,
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peer_addr: SocketAddr,
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secure: bool,
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ipv4: bool,
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) {
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if let Err(err) =
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create_relay_connection_(server, relay_server, uuid.clone(), peer_addr, secure, ipv4).await
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{
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log::error!(
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"Failed to create relay connection for {} with uuid {}: {}",
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peer_addr,
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uuid,
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err
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);
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}
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}
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async fn create_relay_connection_(
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server: ServerPtr,
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relay_server: String,
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uuid: String,
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peer_addr: SocketAddr,
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secure: bool,
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ipv4: bool,
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) -> ResultType<()> {
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let mut stream = socket_client::connect_tcp(
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socket_client::ipv4_to_ipv6(crate::check_port(relay_server, RELAY_PORT), ipv4),
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CONNECT_TIMEOUT,
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)
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.await?;
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let mut msg_out = RendezvousMessage::new();
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let licence_key = crate::get_key(true).await;
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msg_out.set_request_relay(RequestRelay {
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licence_key,
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uuid,
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..Default::default()
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});
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stream.send(&msg_out).await?;
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create_tcp_connection(server, stream, peer_addr, secure).await?;
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Ok(())
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}
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impl Server {
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pub fn add_connection(&mut self, conn: ConnInner, noperms: &Vec<&'static str>) {
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for s in self.services.values() {
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if !noperms.contains(&s.name()) {
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s.on_subscribe(conn.clone());
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}
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}
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self.connections.insert(conn.id(), conn);
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*CONN_COUNT.lock().unwrap() = self.connections.len();
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}
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pub fn remove_connection(&mut self, conn: &ConnInner) {
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for s in self.services.values() {
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s.on_unsubscribe(conn.id());
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}
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self.connections.remove(&conn.id());
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*CONN_COUNT.lock().unwrap() = self.connections.len();
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}
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pub fn close_connections(&mut self) {
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let conn_inners: Vec<_> = self.connections.values_mut().collect();
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for c in conn_inners {
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let mut misc = Misc::new();
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misc.set_stop_service(true);
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let mut msg = Message::new();
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msg.set_misc(misc);
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c.send(Arc::new(msg));
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}
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}
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fn add_service(&mut self, service: Box<dyn Service>) {
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let name = service.name();
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self.services.insert(name, service);
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}
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pub fn subscribe(&mut self, name: &str, conn: ConnInner, sub: bool) {
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if let Some(s) = self.services.get(&name) {
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if s.is_subed(conn.id()) == sub {
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return;
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}
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if sub {
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s.on_subscribe(conn.clone());
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} else {
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s.on_unsubscribe(conn.id());
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}
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}
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}
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// get a new unique id
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pub fn get_new_id(&mut self) -> i32 {
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let new_id = self.id_count;
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self.id_count += 1;
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new_id
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}
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}
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impl Drop for Server {
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fn drop(&mut self) {
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for s in self.services.values() {
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s.join();
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}
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#[cfg(target_os = "linux")]
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wayland::clear();
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}
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}
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pub fn check_zombie() {
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std::thread::spawn(|| loop {
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let mut lock = CHILD_PROCESS.lock().unwrap();
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let mut i = 0;
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while i != lock.len() {
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let c = &mut (*lock)[i];
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if let Ok(Some(_)) = c.try_wait() {
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lock.remove(i);
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} else {
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i += 1;
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}
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}
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drop(lock);
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std::thread::sleep(Duration::from_millis(100));
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});
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}
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/// Start the host server that allows the remote peer to control the current machine.
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///
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/// # Arguments
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///
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/// * `is_server` - Whether the current client is definitely the server.
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/// If true, the server will be started.
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/// Otherwise, client will check if there's already a server and start one if not.
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#[cfg(any(target_os = "android", target_os = "ios"))]
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#[tokio::main]
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pub async fn start_server(_is_server: bool) {
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crate::RendezvousMediator::start_all().await;
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}
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/// Start the host server that allows the remote peer to control the current machine.
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///
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/// # Arguments
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///
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/// * `is_server` - Whether the current client is definitely the server.
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/// If true, the server will be started.
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/// Otherwise, client will check if there's already a server and start one if not.
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#[cfg(not(any(target_os = "android", target_os = "ios")))]
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#[tokio::main]
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pub async fn start_server(is_server: bool) {
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#[cfg(target_os = "linux")]
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{
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log::info!("DISPLAY={:?}", std::env::var("DISPLAY"));
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log::info!("XAUTHORITY={:?}", std::env::var("XAUTHORITY"));
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}
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#[cfg(feature = "hwcodec")]
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{
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use std::sync::Once;
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static ONCE: Once = Once::new();
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ONCE.call_once(|| {
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scrap::hwcodec::check_config_process(false);
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})
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}
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if is_server {
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std::thread::spawn(move || {
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if let Err(err) = crate::ipc::start("") {
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log::error!("Failed to start ipc: {}", err);
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std::process::exit(-1);
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}
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});
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#[cfg(windows)]
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crate::platform::windows::bootstrap();
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input_service::fix_key_down_timeout_loop();
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crate::hbbs_http::sync::start();
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#[cfg(target_os = "linux")]
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if crate::platform::current_is_wayland() {
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allow_err!(input_service::setup_uinput(0, 1920, 0, 1080).await);
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}
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#[cfg(target_os = "macos")]
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tokio::spawn(async { sync_and_watch_config_dir().await });
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crate::RendezvousMediator::start_all().await;
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} else {
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match crate::ipc::connect(1000, "").await {
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Ok(mut conn) => {
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if conn.send(&Data::SyncConfig(None)).await.is_ok() {
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if let Ok(Some(data)) = conn.next_timeout(1000).await {
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match data {
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Data::SyncConfig(Some(configs)) => {
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let (config, config2) = *configs;
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if Config::set(config) {
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log::info!("config synced");
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}
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if Config2::set(config2) {
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log::info!("config2 synced");
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}
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}
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_ => {}
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}
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}
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}
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}
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Err(err) => {
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log::info!("server not started (will try to start): {}", err);
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std::thread::spawn(|| start_server(true));
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}
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}
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}
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}
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#[cfg(target_os = "macos")]
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#[tokio::main(flavor = "current_thread")]
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pub async fn start_ipc_url_server() {
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log::debug!("Start an ipc server for listening to url schemes");
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match crate::ipc::new_listener("_url").await {
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Ok(mut incoming) => {
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while let Some(Ok(conn)) = incoming.next().await {
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let mut conn = crate::ipc::Connection::new(conn);
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match conn.next_timeout(1000).await {
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Ok(Some(data)) => match data {
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#[cfg(feature = "flutter")]
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Data::UrlLink(url) => {
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if let Some(stream) = crate::flutter::GLOBAL_EVENT_STREAM
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.read()
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.unwrap()
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.get(crate::flutter::APP_TYPE_MAIN)
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{
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let mut m = HashMap::new();
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m.insert("name", "on_url_scheme_received");
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m.insert("url", url.as_str());
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stream.add(serde_json::to_string(&m).unwrap());
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} else {
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log::warn!("No main window app found!");
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}
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}
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_ => {
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log::warn!("An unexpected data was sent to the ipc url server.")
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}
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},
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Err(err) => {
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log::error!("{}", err);
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}
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_ => {}
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}
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}
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}
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Err(err) => {
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log::error!("{}", err);
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}
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}
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}
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#[cfg(target_os = "macos")]
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async fn sync_and_watch_config_dir() {
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if crate::platform::is_root() {
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return;
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}
|
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|
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let mut cfg0 = (Config::get(), Config2::get());
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let mut synced = false;
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let tries =
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if std::env::args().len() == 2 && std::env::args().nth(1) == Some("--server".to_owned()) {
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30
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} else {
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3
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};
|
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log::debug!("#tries of ipc service connection: {}", tries);
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use hbb_common::sleep;
|
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for i in 1..=tries {
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sleep(i as f32 * 0.3).await;
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match crate::ipc::connect(1000, "_service").await {
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Ok(mut conn) => {
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if !synced {
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if conn.send(&Data::SyncConfig(None)).await.is_ok() {
|
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if let Ok(Some(data)) = conn.next_timeout(1000).await {
|
|
match data {
|
|
Data::SyncConfig(Some(configs)) => {
|
|
let (config, config2) = *configs;
|
|
let _chk = crate::ipc::CheckIfRestart::new();
|
|
if cfg0.0 != config {
|
|
cfg0.0 = config.clone();
|
|
Config::set(config);
|
|
log::info!("sync config from root");
|
|
}
|
|
if cfg0.1 != config2 {
|
|
cfg0.1 = config2.clone();
|
|
Config2::set(config2);
|
|
log::info!("sync config2 from root");
|
|
}
|
|
synced = true;
|
|
}
|
|
_ => {}
|
|
};
|
|
};
|
|
}
|
|
}
|
|
|
|
loop {
|
|
sleep(0.3).await;
|
|
let cfg = (Config::get(), Config2::get());
|
|
if cfg != cfg0 {
|
|
log::info!("config updated, sync to root");
|
|
match conn.send(&Data::SyncConfig(Some(cfg.clone().into()))).await {
|
|
Err(e) => {
|
|
log::error!("sync config to root failed: {}", e);
|
|
break;
|
|
}
|
|
_ => {
|
|
cfg0 = cfg;
|
|
conn.next_timeout(1000).await.ok();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Err(_) => {
|
|
log::info!("#{} try: failed to connect to ipc_service", i);
|
|
}
|
|
}
|
|
}
|
|
log::warn!("skipped config sync");
|
|
}
|