862 lines
32 KiB
Rust
862 lines
32 KiB
Rust
use crate::actor::server_actor::{PeerAddress, ServerActor, ServerMessage};
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use crate::actor::ActorHandle;
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use crate::types::DownloadStatus;
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use crate::utils::logger;
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use crate::{
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actor::{peer_registry::PeerRegistry, ActorSystem},
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error::{Result, SoulseekRs},
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peer::{listen::Listen, ConnectionType, DownloadPeer, NewPeer, Peer},
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types::{Download, Search, SearchResult},
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utils::{md5, thread_pool::ThreadPool},
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Transfer,
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};
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use std::{
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collections::HashMap,
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net::TcpStream,
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sync::{
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atomic::{AtomicBool, Ordering},
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mpsc::{Receiver, Sender},
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RwLock,
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},
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thread::{self, sleep},
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};
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use std::{
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sync::{mpsc, Arc},
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time::{Duration, Instant},
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};
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use crate::{debug, error, info, trace, warn};
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const DEFALT_LISTEN_PORT: u32 = 2234;
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#[derive(Debug, Clone)]
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pub struct ClientSettings {
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pub username: String,
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pub password: String,
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pub server_address: PeerAddress,
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pub enable_listen: bool,
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pub listen_port: u32,
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}
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impl ClientSettings {
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pub fn new(
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username: impl Into<String>,
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password: impl Into<String>,
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) -> Self {
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Self {
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username: username.into(),
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password: password.into(),
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..Default::default()
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}
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}
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}
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impl Default for ClientSettings {
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fn default() -> Self {
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Self {
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username: String::new(),
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password: String::new(),
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server_address: PeerAddress::new(
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"server.slsknet.org".to_string(),
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2416,
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),
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enable_listen: true,
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listen_port: DEFALT_LISTEN_PORT,
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}
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}
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}
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#[derive(Debug)]
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pub enum ClientOperation {
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NewPeer(NewPeer),
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ConnectToPeer(Peer),
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SearchResult(SearchResult),
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PeerDisconnected(String, Option<SoulseekRs>),
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PierceFireWall(Peer),
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DownloadFromPeer(u32, Peer, bool),
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UpdateDownloadTokens(Transfer, String),
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GetPeerAddressResponse {
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username: String,
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host: String,
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port: u32,
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obfuscation_type: u32,
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obfuscated_port: u16,
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},
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UploadFailed(String, String),
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SetServerSender(Sender<ServerMessage>),
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}
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pub struct ClientContext {
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pub peer_registry: Option<PeerRegistry>,
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sender: Option<Sender<ClientOperation>>,
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server_sender: Option<Sender<ServerMessage>>,
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searches: HashMap<String, Search>,
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downloads: Vec<Download>,
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actor_system: Arc<ActorSystem>,
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}
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impl Default for ClientContext {
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fn default() -> Self {
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Self::new()
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}
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}
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impl ClientContext {
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pub fn add_download(&mut self, download: Download) {
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self.downloads.push(download);
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}
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pub fn remove_download(&mut self, token: u32) {
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self.downloads.retain(|d| d.token != token);
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}
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pub fn get_download_by_token(&self, token: u32) -> Option<&Download> {
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self.downloads.iter().find(|d| d.token == token)
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}
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pub fn get_download_by_token_mut(
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&mut self,
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token: u32,
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) -> Option<&mut Download> {
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self.downloads.iter_mut().find(|d| d.token == token)
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}
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pub fn get_download_tokens(&self) -> Vec<u32> {
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self.downloads.iter().map(|d| d.token).collect()
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}
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pub fn get_downloads(&self) -> &Vec<Download> {
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&self.downloads
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}
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pub fn update_download_with_status(
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&mut self,
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token: u32,
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status: DownloadStatus,
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) {
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if let Some(download) = self.get_download_by_token_mut(token) {
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download.status = status;
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}
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}
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}
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#[test]
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fn test_client_context_downloads() {
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let mut context = ClientContext::new();
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let token = 123;
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let new_token = 1234;
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let download = Download {
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username: "test".to_string(),
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filename: "test.txt".to_string(),
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token,
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size: 100,
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download_directory: "test".to_string(),
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status: DownloadStatus::Queued,
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sender: mpsc::channel().0,
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};
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context.add_download(download);
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assert!(context.get_download_by_token(123).is_some());
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assert_eq!(context.get_download_tokens(), vec![123]);
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assert_eq!(context.get_downloads().len(), 1);
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if let Some(download) = context.get_download_by_token_mut(token) {
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assert_eq!(download.token, token);
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download.token = new_token
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}
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assert!(context.get_download_by_token(new_token).is_some());
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assert_eq!(context.get_download_tokens(), vec![new_token]);
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context.remove_download(new_token);
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assert_eq!(context.get_downloads().len(), 0);
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assert!(context.get_download_by_token(1234).is_none());
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}
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impl ClientContext {
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#[must_use]
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pub fn new() -> Self {
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let max_threads = thread::available_parallelism()
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.map(|n| n.get())
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.unwrap_or(8);
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let thread_pool = Arc::new(ThreadPool::new(max_threads));
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let actor_system = Arc::new(ActorSystem::new(thread_pool.clone()));
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Self {
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peer_registry: None,
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sender: None,
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server_sender: None,
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searches: HashMap::new(),
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downloads: Vec::new(),
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actor_system,
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}
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}
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}
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pub struct Client {
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enable_listen: bool,
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listen_port: u32,
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address: PeerAddress,
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username: String,
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password: String,
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server_handle: Option<ActorHandle<ServerMessage>>,
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context: Arc<RwLock<ClientContext>>,
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}
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impl Client {
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pub fn new(
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username: impl Into<String>,
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password: impl Into<String>,
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) -> Self {
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Self::with_settings(ClientSettings::new(username, password))
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}
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pub fn with_settings(settings: ClientSettings) -> Self {
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logger::init();
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Self {
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enable_listen: settings.enable_listen,
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listen_port: settings.listen_port,
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address: settings.server_address,
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username: settings.username,
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password: settings.password,
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context: Arc::new(RwLock::new(ClientContext::new())),
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server_handle: None,
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}
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}
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pub fn connect(&mut self) {
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let (sender, message_reader): (
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Sender<ClientOperation>,
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Receiver<ClientOperation>,
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) = mpsc::channel();
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let mut ctx = self.context.write().unwrap();
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ctx.sender = Some(sender.clone());
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let peer_registry =
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PeerRegistry::new(ctx.actor_system.clone(), sender.clone());
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ctx.peer_registry = Some(peer_registry);
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let listen_sender = sender.clone();
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let server_actor = ServerActor::new(
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self.address.clone(),
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sender,
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self.listen_port,
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self.enable_listen,
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);
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self.server_handle = Some(ctx.actor_system.spawn_with_handle(
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server_actor,
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|actor, handle| {
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actor.set_self_handle(handle);
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},
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));
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if self.enable_listen {
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let listen_port = self.listen_port;
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let client_sender = listen_sender;
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let context = self.context.clone();
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let own_username = self.username.clone();
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thread::spawn(move || {
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Listen::start(
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listen_port,
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client_sender,
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context,
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own_username,
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);
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});
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}
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Self::listen_to_client_operations(
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message_reader,
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self.context.clone(),
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self.username.clone(),
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);
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}
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pub fn login(&self) -> Result<bool> {
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info!("Logging in as {}", self.username);
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if let Some(handle) = &self.server_handle {
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let (tx, rx) = std::sync::mpsc::channel();
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let _ = handle.send(ServerMessage::Login {
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username: self.username.clone(),
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password: self.password.clone(),
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response: tx,
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});
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match rx.recv() {
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Ok(result) => result,
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Err(_) => Err(SoulseekRs::Timeout),
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}
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} else {
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Err(SoulseekRs::NotConnected)
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}
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}
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#[allow(dead_code)]
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pub fn remove_peer(&self, username: &str) {
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let context = self.context.read().unwrap();
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if let Some(ref registry) = context.peer_registry {
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if let Some(handle) = registry.remove_peer(username) {
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let _ = handle.stop();
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}
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}
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}
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pub fn search(
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&self,
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query: &str,
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timeout: Duration,
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) -> Result<Vec<SearchResult>> {
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self.search_with_cancel(query, timeout, None)
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}
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pub fn search_with_cancel(
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&self,
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query: &str,
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timeout: Duration,
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cancel_flag: Option<Arc<AtomicBool>>,
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) -> Result<Vec<SearchResult>> {
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info!("Searching for {}", query);
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if let Some(handle) = &self.server_handle {
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let hash = md5::md5(query);
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let token = u32::from_str_radix(&hash[0..5], 16)?;
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// Initialize new search with query string as key
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self.context.write().unwrap().searches.insert(
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query.to_string(),
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Search {
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token,
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results: Vec::new(),
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},
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);
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let _ = handle.send(ServerMessage::FileSearch {
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token,
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query: query.to_string(),
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});
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} else {
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return Err(SoulseekRs::NotConnected);
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}
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let start = Instant::now();
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loop {
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sleep(Duration::from_millis(100));
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// Check if cancelled
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if let Some(ref flag) = cancel_flag {
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if flag.load(Ordering::Relaxed) {
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info!("Search cancelled by user");
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break;
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}
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}
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// Check if timeout reached
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if start.elapsed() >= timeout {
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break;
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}
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}
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Ok(self.get_search_results(query))
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}
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pub fn get_search_results_count(&self, search_key: &str) -> usize {
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self.context
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.read()
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.unwrap()
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.searches
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.get(search_key)
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.map(|s| s.results.len())
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.unwrap_or(0)
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}
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pub fn get_search_results(&self, search_key: &str) -> Vec<SearchResult> {
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self.context
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.read()
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.unwrap()
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.searches
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.get(search_key)
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.map(|s| s.results.clone())
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.unwrap_or_default()
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}
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pub fn get_all_searches(&self) -> HashMap<String, Search> {
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self.context.read().unwrap().searches.clone()
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}
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pub fn get_all_downloads(&self) -> Vec<Download> {
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self.context.read().unwrap().get_downloads().clone()
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}
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pub fn download(
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&self,
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filename: String,
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username: String,
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size: u64,
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download_directory: String,
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) -> Result<(Download, Receiver<DownloadStatus>)> {
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info!("[client] Downloading {} from {}", filename, username);
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let hash = md5::md5(&filename);
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let token = u32::from_str_radix(&hash[0..5], 16)?;
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let (download_sender, download_receiver): (
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Sender<DownloadStatus>,
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Receiver<DownloadStatus>,
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) = mpsc::channel();
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let download = Download {
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username: username.clone(),
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filename: filename.clone(),
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token,
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size,
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download_directory,
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status: DownloadStatus::Queued,
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sender: download_sender,
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};
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let mut context = self.context.write().unwrap();
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context.add_download(download.clone());
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let download_initiated =
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if let Some(ref registry) = context.peer_registry {
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registry
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.queue_upload(&username, download.filename.clone())
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.is_ok()
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} else {
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false
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};
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drop(context);
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if !download_initiated {
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let _ = download.sender.send(DownloadStatus::Failed);
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self.context
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.write()
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.unwrap()
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.update_download_with_status(token, DownloadStatus::Failed);
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}
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Ok((download, download_receiver))
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}
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fn process_failed_uploads(
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client_context: Arc<RwLock<ClientContext>>,
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username: &str,
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filename: Option<&str>,
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) {
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let context = client_context.read().unwrap();
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let failed_downloads: Vec<_> = context
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.get_downloads()
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.iter()
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.filter(|download| {
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download.username == username
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&& (filename.is_none_or(|f| download.filename == *f))
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})
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.map(|download| {
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let _ = download.sender.send(DownloadStatus::Failed);
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download.token
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})
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.collect();
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drop(context);
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failed_downloads.iter().for_each(|token| {
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let mut context = client_context.write().unwrap();
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context.update_download_with_status(*token, DownloadStatus::Failed);
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context.remove_download(*token);
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});
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}
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fn listen_to_client_operations(
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reader: Receiver<ClientOperation>,
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client_context: Arc<RwLock<ClientContext>>,
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own_username: String,
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) {
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thread::spawn(move || loop {
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match reader.recv() {
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Ok(operation) => {
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match operation {
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ClientOperation::ConnectToPeer(peer) => {
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let client_context_clone = client_context.clone();
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let own_username_clone = own_username.clone();
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thread::spawn(move || {
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Self::connect_to_peer(
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peer,
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client_context_clone,
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own_username_clone,
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None,
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);
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});
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}
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ClientOperation::SearchResult(search_result) => {
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trace!("[client] SearchResult {:?}", search_result);
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let mut context = client_context.write().unwrap();
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let result_token = search_result.token;
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// Find the search with matching token
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for search in context.searches.values_mut() {
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if search.token == result_token {
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search.results.push(search_result);
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break;
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}
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}
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}
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ClientOperation::PeerDisconnected(username, error) => {
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let context = client_context.read().unwrap();
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if let Some(ref registry) = context.peer_registry {
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if let Some(handle) =
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registry.remove_peer(&username)
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{
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let _ = handle.stop();
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}
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}
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if let Some(error) = error {
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warn!(
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"[client] Peer {} disconnected with error: {:?}",
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username, error
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);
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Self::process_failed_uploads(
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client_context.clone(),
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&username,
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None,
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);
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}
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}
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ClientOperation::PierceFireWall(peer) => {
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Self::pierce_firewall(
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peer,
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client_context.clone(),
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own_username.clone(),
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);
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}
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ClientOperation::DownloadFromPeer(
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token,
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peer,
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allowed,
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) => {
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let maybe_download = {
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let client_context =
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client_context.read().unwrap();
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client_context
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.get_download_by_token(token)
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.cloned()
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};
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let own_username = own_username.clone();
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let client_context_clone = client_context.clone();
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trace!(
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"[client] DownloadFromPeer token: {} peer: {:?}",
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token,
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peer
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);
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match maybe_download {
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Some(download) => {
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thread::spawn(move || {
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let download_peer = DownloadPeer::new(
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download.username.clone(),
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peer.host.clone(),
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peer.port,
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token,
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allowed,
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own_username,
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);
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let filename: Option<&str> = download
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.filename
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.split('\\')
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.next_back();
|
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match filename {
|
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Some(filename) => {
|
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match download_peer.download_file(
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client_context_clone.clone(),
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Some(download.clone()),
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None
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) {
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Ok((download, filename)) => {
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let _ = download.sender.send(DownloadStatus::Completed);
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client_context_clone.write().unwrap().update_download_with_status(download.token, DownloadStatus::Completed);
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info!("Successfully downloaded {} bytes to {}", download.size, filename);
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}
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Err(e) => {
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let _ = download.sender.send(DownloadStatus::Failed);
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client_context_clone.write().unwrap().update_download_with_status(download.token, DownloadStatus::Failed);
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error!(
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"Failed to download file '{}' from {}:{} (token: {}) - Error: {}",
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filename, peer.host, peer.port, download.token, e
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);
|
|
}
|
|
}
|
|
}
|
|
None => error!("Cant find filename to save download: {:?}", download.filename),
|
|
}
|
|
});
|
|
}
|
|
None => {
|
|
error!(
|
|
"Can't find download with token {:?}",
|
|
token
|
|
);
|
|
}
|
|
};
|
|
}
|
|
ClientOperation::NewPeer(new_peer) => {
|
|
let peer_exists = client_context
|
|
.read()
|
|
.unwrap()
|
|
.peer_registry
|
|
.as_ref()
|
|
.map(|r| r.contains(&new_peer.username))
|
|
.unwrap_or(false);
|
|
|
|
if peer_exists {
|
|
debug!(
|
|
"Already connected to {}",
|
|
new_peer.username
|
|
);
|
|
} else if let Some(server_sender) =
|
|
&client_context.read().unwrap().server_sender
|
|
{
|
|
server_sender
|
|
.send(ServerMessage::GetPeerAddress(
|
|
new_peer.username.clone(),
|
|
))
|
|
.unwrap();
|
|
}
|
|
|
|
let addr = new_peer.tcp_stream.peer_addr().unwrap();
|
|
let host = addr.ip().to_string();
|
|
let port: u32 = addr.port().into();
|
|
|
|
let peer = Peer {
|
|
username: new_peer.username.clone(),
|
|
connection_type: new_peer.connection_type,
|
|
host,
|
|
port,
|
|
token: Some(new_peer.token),
|
|
privileged: None,
|
|
obfuscated_port: None,
|
|
unknown: None,
|
|
};
|
|
|
|
Self::connect_to_peer(
|
|
peer,
|
|
client_context.clone(),
|
|
own_username.clone(),
|
|
Some(new_peer.tcp_stream),
|
|
);
|
|
}
|
|
ClientOperation::GetPeerAddressResponse {
|
|
username,
|
|
host,
|
|
port,
|
|
obfuscation_type,
|
|
obfuscated_port,
|
|
} => {
|
|
debug!(
|
|
"Received peer address for {}: {}:{} (obf_type: {}, obf_port: {})",
|
|
username, host, port, obfuscation_type, obfuscated_port
|
|
);
|
|
|
|
let peer_exists = client_context
|
|
.read()
|
|
.unwrap()
|
|
.peer_registry
|
|
.as_ref()
|
|
.map(|r| r.contains(&username))
|
|
.unwrap_or(false);
|
|
|
|
if peer_exists {
|
|
// don't know if i should update? and or reconnect the peer
|
|
// debug!(
|
|
// "existing peer: {:?}, new peer details:
|
|
// username: {},
|
|
// host: {},
|
|
// port: {}
|
|
// obfuscation_type: {}
|
|
// obfuscated_port: {}",
|
|
// peer,
|
|
// username,
|
|
// host,
|
|
// port,
|
|
// obfuscation_type,
|
|
// obfuscated_port,
|
|
// );
|
|
} else {
|
|
let peer = Peer::new(
|
|
username,
|
|
ConnectionType::P,
|
|
host,
|
|
port,
|
|
None,
|
|
0,
|
|
obfuscation_type.try_into().unwrap(),
|
|
obfuscated_port.try_into().unwrap(),
|
|
);
|
|
let client_context_clone =
|
|
client_context.clone();
|
|
let own_username_clone = own_username.clone();
|
|
|
|
thread::spawn(move || {
|
|
Self::connect_to_peer(
|
|
peer,
|
|
client_context_clone,
|
|
own_username_clone,
|
|
None,
|
|
);
|
|
});
|
|
}
|
|
}
|
|
ClientOperation::UpdateDownloadTokens(
|
|
transfer,
|
|
username,
|
|
) => {
|
|
let mut context = client_context.write().unwrap();
|
|
|
|
let download_to_update =
|
|
context.get_downloads().iter().find_map(|d| {
|
|
if d.username == username
|
|
&& d.filename == transfer.filename
|
|
{
|
|
Some((d.token, d.clone()))
|
|
} else {
|
|
None
|
|
}
|
|
});
|
|
|
|
if let Some((old_token, download)) =
|
|
download_to_update
|
|
{
|
|
trace!(
|
|
"[client] UpdateDownloadTokens found {old_token}, transfer: {:?}",
|
|
transfer
|
|
);
|
|
|
|
context.add_download(Download {
|
|
username: username.clone(),
|
|
filename: transfer.filename,
|
|
token: transfer.token,
|
|
size: transfer.size,
|
|
download_directory: download
|
|
.download_directory,
|
|
status: download.status.clone(),
|
|
sender: download.sender.clone(),
|
|
});
|
|
context.remove_download(old_token);
|
|
}
|
|
}
|
|
ClientOperation::UploadFailed(username, filename) => {
|
|
Self::process_failed_uploads(
|
|
client_context.clone(),
|
|
&username,
|
|
Some(&filename),
|
|
);
|
|
}
|
|
ClientOperation::SetServerSender(sender) => {
|
|
client_context.write().unwrap().server_sender =
|
|
Some(sender);
|
|
debug!("[client] Server sender initialized");
|
|
}
|
|
}
|
|
}
|
|
Err(e) => {
|
|
error!("[client] Channel recv error: {:?}", e);
|
|
break;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
fn connect_to_peer(
|
|
peer: Peer,
|
|
client_context: Arc<RwLock<ClientContext>>,
|
|
own_username: String,
|
|
stream: Option<TcpStream>,
|
|
) {
|
|
let client_context = client_context.clone();
|
|
|
|
let peer_clone = peer.clone();
|
|
trace!("[client] connecting to {}, with connection_type: {}, and token {:?}", peer.username, peer.connection_type, peer.token);
|
|
match peer.connection_type {
|
|
ConnectionType::P => {
|
|
let username = peer.username.clone();
|
|
|
|
let context = client_context.read().unwrap();
|
|
if let Some(ref registry) = context.peer_registry {
|
|
match registry.register_peer(peer_clone, stream, None) {
|
|
Ok(_) => (),
|
|
Err(e) => {
|
|
trace!(
|
|
"Failed to spawn peer actor for {:?}: {:?}",
|
|
username,
|
|
e
|
|
);
|
|
}
|
|
}
|
|
} else {
|
|
trace!("PeerRegistry not initialized");
|
|
}
|
|
}
|
|
|
|
ConnectionType::F => {
|
|
trace!(
|
|
"[client] downloading from: {}, {:?}",
|
|
peer.username,
|
|
peer.token
|
|
);
|
|
let download_peer = DownloadPeer::new(
|
|
peer.username,
|
|
peer.host,
|
|
peer.port,
|
|
peer.token.unwrap(),
|
|
false,
|
|
own_username.clone(),
|
|
);
|
|
|
|
match download_peer.download_file(
|
|
client_context.clone(),
|
|
None,
|
|
None,
|
|
) {
|
|
Ok((download, filename)) => {
|
|
trace!(
|
|
"[client] downloaded {} bytes {:?} ",
|
|
filename,
|
|
download.size
|
|
);
|
|
let _ = download.sender.send(DownloadStatus::Completed);
|
|
client_context
|
|
.write()
|
|
.unwrap()
|
|
.update_download_with_status(
|
|
download.token,
|
|
DownloadStatus::Completed,
|
|
);
|
|
}
|
|
Err(e) => {
|
|
trace!("[client] failed to download: {}", e);
|
|
}
|
|
}
|
|
}
|
|
ConnectionType::D => {
|
|
error!("ConnectionType::D not implemented")
|
|
}
|
|
}
|
|
}
|
|
fn pierce_firewall(
|
|
peer: Peer,
|
|
client_context: Arc<RwLock<ClientContext>>,
|
|
own_username: String,
|
|
) {
|
|
debug!("Piercing firewall for peer: {:?}", peer);
|
|
|
|
let context = client_context.read().unwrap();
|
|
if let Some(server_sender) = &context.server_sender {
|
|
if let Some(token) = peer.token {
|
|
match server_sender.send(ServerMessage::PierceFirewall(token)) {
|
|
Ok(_) => (),
|
|
Err(e) => {
|
|
error!("Failed to send PierceFirewall message: {}", e)
|
|
}
|
|
}
|
|
} else {
|
|
error!("No token available for PierceFirewall");
|
|
}
|
|
} else {
|
|
error!("No server sender available for PierceFirewall");
|
|
}
|
|
|
|
drop(context);
|
|
Self::connect_to_peer(peer, client_context, own_username, None);
|
|
}
|
|
}
|