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name = "version_check"
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name = "winapi"
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checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
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dependencies = [
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"winapi-i686-pc-windows-gnu",
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"winapi-x86_64-pc-windows-gnu",
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]
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|
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[[package]]
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name = "winapi-i686-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
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name = "winapi-util"
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version = "0.1.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"winapi",
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name = "winapi-x86_64-pc-windows-gnu"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -0,0 +1,12 @@
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[package]
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name = "rustchat"
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authors = ["seba"]
|
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version = "0.1.0"
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edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
clap = { version = "3.0.0-rc.9", features = ["derive"] }
|
||||
chrono = "0.4"
|
||||
retain_mut = "0.1.5"
|
||||
@ -0,0 +1,158 @@
|
||||
use std::sync::{Arc, Mutex};
|
||||
use std::net::{TcpListener, TcpStream};
|
||||
use std::thread;
|
||||
use clap::Parser;
|
||||
use std::io::Write;
|
||||
use std::io::{self, BufRead};
|
||||
use chrono::{DateTime, Utc};
|
||||
use std::borrow::{Borrow, BorrowMut};
|
||||
use retain_mut::RetainMut;
|
||||
use std::collections::BTreeMap;
|
||||
|
||||
|
||||
fn send_to_all(clients: &Arc<Mutex<Vec<ChatUser>>>, msg: &str) -> Result<(), ChatError> {
|
||||
let now: DateTime<Utc> = Utc::now();
|
||||
let time_msg = format!("[{}] {}", now.format("%H:%M:%S"), msg);
|
||||
let mut broken_clients = vec![];
|
||||
clients.lock()?.borrow_mut().retain_mut(
|
||||
| client | {
|
||||
if write!(client.socket, "{}\n", time_msg).is_err() {
|
||||
broken_clients.push(client.name.clone());
|
||||
return false
|
||||
}
|
||||
true
|
||||
});
|
||||
|
||||
for name in broken_clients {
|
||||
send_to_all(clients, &format!("* {} left the chat (broken pipe)", name))?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
|
||||
/// Represent one single chat user and their network stuff
|
||||
struct ChatUser {
|
||||
/// user id
|
||||
id: u64,
|
||||
|
||||
/// Name of the chat user
|
||||
name: String,
|
||||
|
||||
/// TCPStream socket object thingy
|
||||
socket: TcpStream,
|
||||
}
|
||||
|
||||
impl ChatUser {
|
||||
pub fn new(id: u64, name: String, socket: TcpStream) -> Self {
|
||||
Self{id, name, socket}
|
||||
}
|
||||
}
|
||||
|
||||
struct ChatServer {
|
||||
user_map: BTreeMap<u64, ChatUser>,
|
||||
user_id_counter: u64,
|
||||
}
|
||||
|
||||
impl ChatServer {
|
||||
pub fn new() -> Self {
|
||||
Self{user_map: BtreeMap::new(), user_id_counter: 1}
|
||||
}
|
||||
|
||||
// register a client by creating a ChatUser for it and assigning it a user id
|
||||
pub fn register(&mut self, name: String, socket: TcpStream) {
|
||||
let chat_user = ChatUser::new(user_id_counter, name, socket);
|
||||
self.user_map.insert(chat_user.id, chat_user);
|
||||
self.user_id_counter += 1;
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
enum ChatError {
|
||||
IOError(std::io::Error),
|
||||
MutexPoisonError(),
|
||||
Protocol(String),
|
||||
}
|
||||
|
||||
impl From<std::io::Error> for ChatError {
|
||||
fn from(error: std::io::Error) -> Self {
|
||||
ChatError::IOError(error)
|
||||
}
|
||||
}
|
||||
|
||||
impl <'a, T> From<std::sync::PoisonError<std::sync::MutexGuard<'a, T>>> for ChatError {
|
||||
fn from(_error: std::sync::PoisonError<std::sync::MutexGuard<'a, T>>) -> Self {
|
||||
ChatError::MutexPoisonError()
|
||||
}
|
||||
}
|
||||
|
||||
fn handle_client(mut stream: TcpStream, clients: Arc<Mutex<Vec<ChatUser>>>) -> Result<(), ChatError> {
|
||||
let mut writer = stream.try_clone()?;
|
||||
let reader = io::BufReader::new(&mut stream);
|
||||
let mut lines = reader.lines();
|
||||
|
||||
// greet and recv nick
|
||||
write!(writer, "Hello and welcome to RustChat!\nNick: ")?;
|
||||
let nick = lines.next().ok_or(ChatError::Protocol(String::from("Could not recv nickname")))??;
|
||||
// FIXME: check for nick name uniqueness
|
||||
|
||||
// print joined msg and register at server
|
||||
send_to_all(&clients, &format!("* {} has joined the chat", nick))?;
|
||||
let curr_users = clients.lock()?.borrow().len();
|
||||
let users_in_room_msg = if curr_users == 1 { String::from("is 1 user") } else { format!("are {} users", curr_users) };
|
||||
write!(writer, "Welcome, {}! You can now start to chat! There {} in the room.\n", nick, users_in_room_msg)?;
|
||||
clients.lock()?.borrow_mut().push(ChatUser::new(nick.clone(), writer));
|
||||
|
||||
// read lines
|
||||
for line in lines {
|
||||
let msg_raw = line?;
|
||||
if msg_raw.is_empty() {
|
||||
continue;
|
||||
}
|
||||
let msg = format!("<{}> {}", nick, msg_raw);
|
||||
send_to_all(&clients, &msg)?;
|
||||
println!("{}", msg);
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
|
||||
fn run_thread(stream: TcpStream, clients: Arc<Mutex<Vec<ChatUser>>>) {
|
||||
let quit_msg = match handle_client(stream, clients) {
|
||||
Ok(()) => String::from("Connection closed by user's choice"),
|
||||
Err(err) => format!("Client foobar't their thread: {:?}", err),
|
||||
};
|
||||
println!(" * Client has left the chat ({})", quit_msg);
|
||||
}
|
||||
|
||||
|
||||
/// Chatserver in RUST!
|
||||
#[derive(Parser, Debug)]
|
||||
#[clap(about, version, author)]
|
||||
struct Args {
|
||||
/// IP address to bind to
|
||||
#[clap(long, default_value = "0.0.0.0")]
|
||||
host: String,
|
||||
|
||||
/// Port to run the server on
|
||||
#[clap(short, long, default_value_t = 1337)]
|
||||
port: i16,
|
||||
}
|
||||
|
||||
fn main() -> std::io::Result<()> {
|
||||
let args = Args::parse();
|
||||
let binding_host = format!("{}:{}", args.host, args.port);
|
||||
println!("Binding to {}", binding_host);
|
||||
|
||||
let listener = TcpListener::bind(binding_host)?;
|
||||
let clients = Arc::new(Mutex::new(vec!()));
|
||||
|
||||
// accept connections and process them serially
|
||||
for stream in listener.incoming() {
|
||||
if let Ok(stream) = stream {
|
||||
let clients_clone = Arc::clone(&clients);
|
||||
thread::spawn(move || { run_thread(stream, clients_clone); });
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
Loading…
Reference in new issue