756 lines
22 KiB
Rust
756 lines
22 KiB
Rust
use crate::actor::{Actor, ActorHandle, ConnectionState};
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use crate::client::ClientOperation;
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use crate::dispatcher::MessageDispatcher;
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use crate::message::server::ConnectToPeerHandler;
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use crate::message::server::ExcludedSearchPhrasesHandler;
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use crate::message::server::FileSearchHandler;
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use crate::message::server::GetPeerAddressHandler;
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use crate::message::server::LoginHandler;
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use crate::message::server::MessageFactory;
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use crate::message::server::MessageUser;
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use crate::message::server::ParentMinSpeedHandler;
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use crate::message::server::ParentSpeedRatioHandler;
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use crate::message::server::PrivilegedUsersHandler;
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use crate::message::server::RoomListHandler;
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use crate::message::server::WishListIntervalHandler;
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use crate::message::{Handlers, MessageType};
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use crate::message::{Message, MessageReader};
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use crate::peer::ConnectionType;
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use crate::peer::Peer;
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use std::io::{self, Error, Write};
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use std::net::{TcpStream, ToSocketAddrs};
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use std::sync::mpsc::{Receiver, Sender};
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use std::sync::{Arc, RwLock};
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use std::time::{Duration, Instant};
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use crate::{debug, error, info, trace, warn, SoulseekRs};
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#[derive(Debug, Clone)]
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pub struct PeerAddress {
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host: String,
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port: u16,
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}
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impl PeerAddress {
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pub fn new(host: String, port: u16) -> Self {
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Self { host, port }
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}
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pub fn get_host(&self) -> &str {
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&self.host
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}
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pub fn get_port(&self) -> u16 {
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self.port
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}
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}
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impl std::fmt::Display for PeerAddress {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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write!(f, "{}:{}", self.host, self.port)
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}
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}
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#[derive(Debug)]
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pub struct Context {
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pub logged_in: Option<bool>,
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#[allow(dead_code)]
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rooms: Rooms,
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}
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impl Default for Context {
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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 Context {
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pub fn new() -> Self {
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Self {
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#[allow(dead_code)]
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rooms: Rooms::new(),
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logged_in: Option::None,
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}
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}
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}
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#[derive(Debug, Clone)]
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pub struct UserMessage {
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id: u32,
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timestamp: u32,
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username: String,
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message: String,
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new_message: bool,
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}
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impl UserMessage {
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pub fn new(
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id: u32,
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timestamp: u32,
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username: String,
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message: String,
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new_message: bool,
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) -> Self {
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Self {
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id,
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timestamp,
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username,
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message,
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new_message,
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}
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}
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pub fn print(&self) {
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debug!(
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"Timestamp: {}. User: {}, Id: #{}, New message: {} Message: {}",
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self.timestamp,
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self.username,
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self.id,
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self.new_message,
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self.message
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);
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}
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}
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#[allow(dead_code)]
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#[derive(Debug)]
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pub struct Rooms {
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pub public_rooms: Vec<Room>,
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pub owned_private_rooms: Vec<Room>,
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pub private_rooms: Vec<Room>,
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pub operated_private_rooms: Vec<Room>,
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}
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impl Rooms {
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fn new() -> Self {
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Self {
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public_rooms: Vec::new(),
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owned_private_rooms: Vec::new(),
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private_rooms: Vec::new(),
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operated_private_rooms: Vec::new(),
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}
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}
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#[allow(dead_code)]
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pub fn print(&self) {
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info!("Public rooms ({}):", self.public_rooms.len());
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for room in &self.public_rooms {
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room.print();
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}
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info!("Owned private rooms ({}):", self.owned_private_rooms.len());
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for room in &self.owned_private_rooms {
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room.print();
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}
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info!("Private rooms ({}):", self.private_rooms.len());
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for room in &self.private_rooms {
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room.print();
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}
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info!(
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"Operated private rooms ({}):",
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self.operated_private_rooms.len()
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);
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for room in &self.operated_private_rooms {
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room.print();
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}
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}
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}
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#[derive(Debug)]
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pub struct Room {
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name: String,
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number_of_users: i32,
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}
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impl Room {
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#[allow(dead_code)]
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pub fn new(name: String, number_of_users: i32) -> Self {
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Self {
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name,
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number_of_users,
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}
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}
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#[allow(dead_code)]
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pub fn set_number_of_users(&mut self, number_of_users: i32) {
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self.number_of_users = number_of_users;
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}
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pub fn print(&self) {
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debug!(
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"Room: {}, Number of users: {}",
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self.name, self.number_of_users
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);
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}
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}
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#[derive(Debug, Clone)]
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pub enum ServerMessage {
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ProcessRead,
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LoginStatus(bool),
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SendMessage(Message),
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Login {
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username: String,
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password: String,
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response: std::sync::mpsc::Sender<Result<bool, SoulseekRs>>,
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},
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FileSearch {
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token: u32,
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query: String,
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},
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#[allow(dead_code)]
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ConnectToPeer(Peer),
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PierceFirewall(u32),
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GetPeerAddress(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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}
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pub struct ServerActor {
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address: PeerAddress,
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context: Arc<RwLock<Context>>,
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listen_port: u32,
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enable_listen: bool,
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stream: Option<TcpStream>,
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connection_state: ConnectionState,
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reader: MessageReader,
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client_channel: Sender<ClientOperation>,
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self_handle: Option<ActorHandle<ServerMessage>>,
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dispatcher: Option<MessageDispatcher<ServerMessage>>,
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dispatcher_receiver: Option<Receiver<ServerMessage>>,
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dispatcher_sender: Option<Sender<ServerMessage>>,
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queued_messages: Vec<ServerMessage>,
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}
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impl ServerActor {
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pub fn new(
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address: PeerAddress,
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client_channel: Sender<ClientOperation>,
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listen_port: u32,
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enable_listen: bool,
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) -> Self {
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Self {
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address,
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context: Arc::new(RwLock::new(Context::new())),
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listen_port,
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enable_listen,
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stream: None,
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connection_state: ConnectionState::Disconnected,
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dispatcher: None,
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dispatcher_receiver: None,
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dispatcher_sender: None,
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reader: MessageReader::new(),
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client_channel,
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self_handle: None,
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queued_messages: Vec::new(),
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}
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}
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pub fn get_address(&self) -> &PeerAddress {
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&self.address
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}
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pub fn get_sender(&self) -> Option<&Sender<ServerMessage>> {
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self.dispatcher_sender.as_ref()
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}
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fn initiate_connection(&mut self) -> bool {
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let host = self.address.host.clone();
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let port = self.address.port;
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let addr_str = format!("{}:{}", host, port);
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let mut socket_addrs = match addr_str.to_socket_addrs() {
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Ok(addrs) => addrs,
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Err(e) => {
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error!("[server] Failed to resolve address: {}", e);
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self.disconnect_with_error(io::Error::new(
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io::ErrorKind::InvalidInput,
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e,
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));
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return false;
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}
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};
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let socket_addr = socket_addrs.next();
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match socket_addr {
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Some(addr) => {
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if let Ok(stream) = TcpStream::connect(addr) {
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if let Err(e) = stream.set_nonblocking(true) {
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error!("[server] Failed to set non-blocking: {}", e);
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self.disconnect_with_error(e);
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return false;
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}
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stream.set_nodelay(true).ok();
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self.stream = Some(stream);
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self.connection_state = ConnectionState::Connecting {
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since: Instant::now(),
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};
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true
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} else {
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match TcpStream::connect(addr) {
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Ok(stream) => {
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if let Err(e) = stream.set_nonblocking(true) {
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error!(
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"[server] Failed to set non-blocking: {}",
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e
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);
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self.disconnect_with_error(e);
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return false;
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}
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stream.set_nodelay(true).ok();
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self.stream = Some(stream);
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self.connection_state =
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ConnectionState::Connecting {
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since: Instant::now(),
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};
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true
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}
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Err(e) => {
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self.disconnect_with_error(e);
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false
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}
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}
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}
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}
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None => {
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let error_msg =
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format!("No socket addresses found for {}:{}", host, port);
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error!("[server] {}", error_msg);
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self.disconnect_with_error(io::Error::new(
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io::ErrorKind::InvalidInput,
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error_msg,
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));
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false
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}
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}
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}
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pub fn set_self_handle(&mut self, handle: ActorHandle<ServerMessage>) {
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self.self_handle = Some(handle);
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}
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fn initialize_dispatcher(&mut self) {
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let (dispatcher_sender, dispatcher_receiver) =
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std::sync::mpsc::channel::<ServerMessage>();
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self.dispatcher_receiver = Some(dispatcher_receiver);
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self.dispatcher_sender = Some(dispatcher_sender.clone());
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self.client_channel
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.send(ClientOperation::SetServerSender(dispatcher_sender.clone()))
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.unwrap();
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let mut handlers = Handlers::new();
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handlers.register_handler(LoginHandler);
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handlers.register_handler(RoomListHandler);
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handlers.register_handler(ExcludedSearchPhrasesHandler);
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handlers.register_handler(PrivilegedUsersHandler);
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handlers.register_handler(MessageUser);
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handlers.register_handler(WishListIntervalHandler);
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handlers.register_handler(ParentMinSpeedHandler);
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handlers.register_handler(ParentSpeedRatioHandler);
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handlers.register_handler(PrivilegedUsersHandler);
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handlers.register_handler(FileSearchHandler);
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handlers.register_handler(GetPeerAddressHandler);
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handlers.register_handler(ConnectToPeerHandler);
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self.dispatcher = Some(MessageDispatcher::new(
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"server".into(),
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dispatcher_sender,
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handlers,
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));
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}
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fn process_dispatcher_messages(&mut self) {
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let messages: Vec<ServerMessage> = self
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.dispatcher_receiver
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.as_ref()
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.map_or_else(Vec::new, |receiver| {
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let mut msgs = Vec::new();
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while let Ok(msg) = receiver.try_recv() {
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msgs.push(msg);
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}
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msgs
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});
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messages
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.iter()
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.for_each(|msg| self.handle_message(msg.clone()));
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}
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pub fn login(
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&mut self,
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username: &str,
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password: &str,
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) -> Result<bool, SoulseekRs> {
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self.queue_message(MessageFactory::build_login_message(
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username, password,
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));
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let context = self.context.clone();
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let mut logged_in;
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let timeout = Duration::from_secs(5);
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let start = Instant::now();
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loop {
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if start.elapsed() > timeout {
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warn!("Timeout waiting for login response");
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return Err(SoulseekRs::Timeout);
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}
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{
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logged_in = context.read().unwrap().logged_in
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}
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if logged_in.is_some() {
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break;
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}
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}
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if logged_in.unwrap() {
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info!("Logged in as {}", username);
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self.queue_message(MessageFactory::build_shared_folders_message(
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1, 499,
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));
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self.queue_message(MessageFactory::build_no_parent_message());
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self.queue_message(MessageFactory::build_set_status_message(2));
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if self.enable_listen {
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self.queue_message(
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MessageFactory::build_set_wait_port_message(
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self.listen_port,
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),
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);
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}
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}
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Ok(logged_in.unwrap())
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}
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pub fn file_search(&mut self, token: u32, query: &str) {
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self.queue_message(MessageFactory::build_file_search_message(
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token, query,
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));
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}
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fn handle_message(&mut self, msg: ServerMessage) {
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if !matches!(self.connection_state, ConnectionState::Connected) {
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match &msg {
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ServerMessage::ProcessRead => {
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// Always process read operations
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}
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_ => {
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// Queue all other messages when not connected
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self.queued_messages.push(msg);
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return;
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}
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}
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}
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match msg {
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ServerMessage::ConnectToPeer(peer) => {
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if let Some(op) = match peer.connection_type {
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ConnectionType::P | ConnectionType::F => {
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Some(ClientOperation::ConnectToPeer(peer.clone()))
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}
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ConnectionType::D => None,
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} {
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self.client_channel.send(op).unwrap();
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}
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}
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ServerMessage::LoginStatus(message) => {
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self.context.write().unwrap().logged_in = Some(message);
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}
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ServerMessage::PierceFirewall(token) => {
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self.send_message(
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MessageFactory::build_pierce_firewall_message(token),
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);
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}
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ServerMessage::SendMessage(message) => {
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self.send_message(message);
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}
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ServerMessage::GetPeerAddress(username) => {
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self.send_message(MessageFactory::build_get_peer_address(
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&username,
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));
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}
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ServerMessage::GetPeerAddressResponse {
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username,
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host,
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port,
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obfuscation_type,
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obfuscated_port,
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} => {
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debug!(
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"[server] Received GetPeerAddress response for {}: {}:{} (obf_type: {}, obf_port: {})"
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, username, host, port, obfuscation_type, obfuscated_port
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);
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if let Err(e) = self.client_channel.send(
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ClientOperation::GetPeerAddressResponse {
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username,
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host,
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port,
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obfuscation_type,
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obfuscated_port,
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},
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) {
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error!("[server] Error forwarding GetPeerAddress response to client: {}", e);
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}
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}
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ServerMessage::ProcessRead => {
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self.process_read();
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}
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ServerMessage::Login {
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username,
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password,
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response,
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} => {
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self.queue_message(MessageFactory::build_login_message(
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&username, &password,
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));
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let start = std::time::Instant::now();
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let timeout = Duration::from_secs(5);
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let context = self.context.clone();
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std::thread::spawn(move || loop {
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if start.elapsed() >= timeout {
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let _ = response.send(Err(SoulseekRs::Timeout));
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break;
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}
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if let Some(logged_in) = context.read().unwrap().logged_in {
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let result = if logged_in {
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Ok(true)
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} else {
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Err(SoulseekRs::AuthenticationFailed)
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};
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let _ = response.send(result);
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break;
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}
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std::thread::sleep(Duration::from_millis(100));
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});
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}
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ServerMessage::FileSearch { token, query } => {
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self.file_search(token, &query);
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}
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}
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}
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fn process_read(&mut self) {
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if self.reader.buffer_len() > 0 {
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self.extract_and_process_messages();
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}
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{
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let stream = match self.stream.as_mut() {
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Some(s) => s,
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None => return,
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};
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match self.reader.read_from_socket(stream) {
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Ok(()) => {}
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Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {}
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Err(ref e) if e.kind() == io::ErrorKind::TimedOut => {
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debug!("[server] Read operation timed out",);
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}
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Err(e) => {
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error!(
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"[server] Error reading from server: {} (kind: {:?}). Disconnecting.",
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e, e.kind()
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);
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self.disconnect_with_error(e);
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return;
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}
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}
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}
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self.extract_and_process_messages();
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}
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|
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fn extract_and_process_messages(&mut self) {
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let mut extracted_count = 0;
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loop {
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match self.reader.extract_message() {
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Ok(Some(mut message)) => {
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extracted_count += 1;
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trace!(
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"[server] ← Message #{}: {:?}",
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extracted_count,
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message
|
|
.get_message_name(
|
|
MessageType::Server,
|
|
message.get_message_code() as u32
|
|
)
|
|
.map_err(|e| e.to_string())
|
|
);
|
|
if let Some(ref dispatcher) = self.dispatcher {
|
|
dispatcher.dispatch(&mut message);
|
|
} else {
|
|
warn!("[server] No dispatcher available!",);
|
|
}
|
|
}
|
|
Err(e) => {
|
|
warn!(
|
|
"[server] Error extracting message: {}. Disconnecting.",
|
|
e
|
|
);
|
|
self.disconnect_with_error(e);
|
|
return;
|
|
}
|
|
Ok(None) => {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
self.process_dispatcher_messages();
|
|
}
|
|
|
|
fn queue_message(&mut self, message: Message) {
|
|
if let Some(sender) = &self.dispatcher_sender {
|
|
match sender.send(ServerMessage::SendMessage(message)) {
|
|
Ok(_) => {}
|
|
Err(e) => error!("Failed to send: {}", e),
|
|
}
|
|
} else {
|
|
self.queued_messages
|
|
.push(ServerMessage::SendMessage(message));
|
|
}
|
|
}
|
|
|
|
fn send_message(&mut self, message: Message) {
|
|
let stream = match self.stream.as_mut() {
|
|
Some(s) => s,
|
|
None => {
|
|
error!("[server] Cannot send message: stream is None");
|
|
return;
|
|
}
|
|
};
|
|
|
|
trace!(
|
|
"[server] ➡ {:?}",
|
|
message
|
|
.get_message_name(
|
|
MessageType::Server,
|
|
u32::from_le_bytes(
|
|
message.get_slice(0, 4).try_into().unwrap()
|
|
)
|
|
)
|
|
.map_err(|e| e.to_string())
|
|
);
|
|
|
|
if let Err(e) = stream.write_all(&message.get_buffer()) {
|
|
error!("[server] Error writing message: {}. Disconnecting.", e);
|
|
self.disconnect_with_error(e);
|
|
return;
|
|
}
|
|
|
|
if let Err(e) = stream.flush() {
|
|
error!("[server] Error flushing stream: {}. Disconnecting.", e);
|
|
self.disconnect_with_error(e);
|
|
}
|
|
}
|
|
|
|
fn disconnect_with_error(&mut self, _error: Error) {
|
|
debug!("[server] disconnect");
|
|
|
|
self.stream.take();
|
|
}
|
|
|
|
fn disconnect(&mut self) {
|
|
debug!("[server] disconnected");
|
|
|
|
self.stream.take();
|
|
}
|
|
|
|
fn check_connection_status(&mut self) {
|
|
let ConnectionState::Connecting { since } = self.connection_state
|
|
else {
|
|
return;
|
|
};
|
|
|
|
if since.elapsed() > Duration::from_secs(20) {
|
|
error!("[server] Connection timeout after 20 seconds");
|
|
self.disconnect_with_error(io::Error::new(
|
|
io::ErrorKind::TimedOut,
|
|
"Connection timeout",
|
|
));
|
|
return;
|
|
}
|
|
|
|
let Some(ref stream) = self.stream else {
|
|
return;
|
|
};
|
|
|
|
match stream.peer_addr() {
|
|
Ok(_) => {
|
|
self.connection_state = ConnectionState::Connected;
|
|
self.on_connection_established();
|
|
}
|
|
Err(ref e) if e.kind() == io::ErrorKind::NotConnected => {}
|
|
Err(e) => {
|
|
error!("[server] Connection failed: {}", e);
|
|
self.disconnect_with_error(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn on_connection_established(&mut self) {
|
|
let Some(_) = self.stream else {
|
|
panic!("Stream should be available here")
|
|
};
|
|
|
|
self.initialize_dispatcher();
|
|
|
|
let queued = std::mem::take(&mut self.queued_messages);
|
|
for msg in queued {
|
|
self.handle_message(msg);
|
|
}
|
|
|
|
if let Some(ref handle) = self.self_handle {
|
|
handle.send(ServerMessage::ProcessRead).ok();
|
|
}
|
|
|
|
self.process_read();
|
|
}
|
|
}
|
|
|
|
impl Actor for ServerActor {
|
|
type Message = ServerMessage;
|
|
|
|
fn handle(&mut self, msg: Self::Message) {
|
|
self.handle_message(msg);
|
|
}
|
|
|
|
fn on_start(&mut self) {
|
|
if self.stream.is_none() {
|
|
self.initiate_connection();
|
|
} else {
|
|
self.connection_state = ConnectionState::Connected;
|
|
self.on_connection_established();
|
|
}
|
|
}
|
|
|
|
fn on_stop(&mut self) {
|
|
trace!("[server] actor stopping");
|
|
self.disconnect();
|
|
}
|
|
|
|
fn tick(&mut self) {
|
|
match self.connection_state {
|
|
ConnectionState::Connecting { .. } => {
|
|
self.check_connection_status();
|
|
}
|
|
ConnectionState::Connected => {
|
|
if self.stream.is_some() {
|
|
self.process_read();
|
|
}
|
|
}
|
|
ConnectionState::Disconnected => {}
|
|
}
|
|
}
|
|
}
|