Merge remote-tracking branch 'upstream/main' into feature/irc-whois

Reviewed-on: lavina/lavina#58

.pre-commit-config.yaml

@@ -0,0 +1,21 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+      - id: check-toml
+      - id: end-of-file-fixer
+      - id: fix-byte-order-marker
+      - id: mixed-line-ending
+      - id: trailing-whitespace
+
+  - repo: local
+    hooks:
+      - id: fmt
+        name: fmt
+        description: Format
+        entry: cargo fmt
+        language: system
+        args:
+          - --all
+        types: [ rust ]
+        pass_filenames: false

Cargo.toml

@@ -10,7 +10,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.0.2-dev"
+version = "0.0.3-dev"
 
 [workspace.dependencies]
 nom = "7.1.3"
@@ -27,10 +27,11 @@ clap = { version = "4.4.4", features = ["derive"] }
 serde = { version = "1.0.152", features = ["rc", "serde_derive"] }
 tracing = "0.1.37" # logging & tracing api
 prometheus = { version = "0.13.3", default-features = false }
-base64 = "0.21.3"
+base64 = "0.22.0"
 lavina-core = { path = "crates/lavina-core" }
 tracing-subscriber = "0.3.16"
 sasl = { path = "crates/sasl" }
+chrono = "0.4.37"
 
 [package]
 name = "lavina"
@@ -58,6 +59,11 @@ projection-irc = { path = "crates/projection-irc" }
 projection-xmpp = { path = "crates/projection-xmpp" }
 mgmt-api = { path = "crates/mgmt-api" }
 clap.workspace = true
+opentelemetry = "0.22.0"
+opentelemetry-semantic-conventions = "0.14.0"
+opentelemetry_sdk = { version = "0.22.1", features = ["rt-tokio"] }
+opentelemetry-otlp = "0.15.0"
+tracing-opentelemetry = "0.23.0"
 
 [dev-dependencies]
 assert_matches.workspace = true

config.toml

@@ -9,6 +9,7 @@ server_name = "irc.localhost"
 listen_on = "127.0.0.1:5222"
 cert = "./certs/xmpp.pem"
 key = "./certs/xmpp.key"
+hostname = "localhost"
 
 [storage]
 db_path = "db.sqlite"

crates/lavina-core/Cargo.toml

@@ -5,8 +5,11 @@ version.workspace = true
 
 [dependencies]
 anyhow.workspace = true
-sqlx = { version = "0.7.0-alpha.2", features = ["sqlite", "migrate"] }
+sqlx = { version = "0.7.4", features = ["sqlite", "migrate", "chrono"] }
 serde.workspace = true
 tokio.workspace = true
 tracing.workspace = true
 prometheus.workspace = true
+chrono.workspace = true
+argon2 = { version = "0.5.3" }
+rand_core = { version = "0.6.4", features = ["getrandom"] }

crates/lavina-core/migrations/2_created_at_for_messages.sql

@@ -0,0 +1 @@
+alter table messages add column created_at text;

crates/lavina-core/migrations/3_dialogs.sql

@@ -0,0 +1,17 @@
+create table dialogs(
+    id integer primary key autoincrement not null,
+    participant_1 integer not null,
+    participant_2 integer not null,
+    created_at timestamp not null,
+    message_count integer not null default 0,
+    unique (participant_1, participant_2)
+);
+
+create table dialog_messages(
+    dialog_id integer not null,
+    id integer not null,  -- unique per dialog, sequential in one dialog
+    author_id integer not null,
+    content string not null,
+    created_at timestamp not null,
+    primary key (dialog_id, id)
+);

crates/lavina-core/migrations/4_new_challenges.sql

@@ -0,0 +1,4 @@
+create table challenges_argon2_password(
+    user_id integer primary key not null,
+    hash string not null
+);

crates/lavina-core/src/auth.rs

@@ -0,0 +1,66 @@
+use anyhow::{anyhow, Result};
+use argon2::password_hash::{PasswordHash, PasswordHasher, PasswordVerifier, SaltString};
+use argon2::Argon2;
+use rand_core::OsRng;
+
+use crate::prelude::log;
+use crate::repo::Storage;
+
+pub enum Verdict {
+    Authenticated,
+    UserNotFound,
+    InvalidPassword,
+}
+
+pub enum UpdatePasswordResult {
+    PasswordUpdated,
+    UserNotFound,
+}
+
+pub struct Authenticator<'a> {
+    storage: &'a Storage,
+}
+impl<'a> Authenticator<'a> {
+    pub fn new(storage: &'a Storage) -> Self {
+        Self { storage }
+    }
+
+    #[tracing::instrument(skip(self, provided_password), name = "Authenticator::authenticate")]
+    pub async fn authenticate(&self, login: &str, provided_password: &str) -> Result<Verdict> {
+        let Some(stored_user) = self.storage.retrieve_user_by_name(login).await? else {
+            return Ok(Verdict::UserNotFound);
+        };
+        if let Some(argon2_hash) = stored_user.argon2_hash {
+            let argon2 = Argon2::default();
+            let password_hash =
+                PasswordHash::new(&argon2_hash).map_err(|e| anyhow!("Failed to parse password hash: {e:?}"))?;
+            let password_verifier = argon2.verify_password(provided_password.as_bytes(), &password_hash);
+            if password_verifier.is_ok() {
+                return Ok(Verdict::Authenticated);
+            }
+        }
+        if let Some(expected_password) = stored_user.password {
+            if expected_password == provided_password {
+                return Ok(Verdict::Authenticated);
+            }
+        }
+        Ok(Verdict::InvalidPassword)
+    }
+
+    #[tracing::instrument(skip(self, provided_password), name = "Authenticator::set_password")]
+    pub async fn set_password(&self, login: &str, provided_password: &str) -> Result<UpdatePasswordResult> {
+        let Some(u) = self.storage.retrieve_user_by_name(login).await? else {
+            return Ok(UpdatePasswordResult::UserNotFound);
+        };
+
+        let salt = SaltString::generate(&mut OsRng);
+        let argon2 = Argon2::default();
+        let password_hash = argon2
+            .hash_password(provided_password.as_bytes(), &salt)
+            .map_err(|e| anyhow!("Failed to hash password: {e:?}"))?;
+
+        self.storage.set_argon2_challenge(u.id, password_hash.to_string().as_str()).await?;
+        log::info!("Password changed for player {login}");
+        Ok(UpdatePasswordResult::PasswordUpdated)
+    }
+}

crates/lavina-core/src/dialog.rs

@@ -0,0 +1,180 @@
+//! Domain of dialogs – conversations between two participants.
+//!
+//! Dialogs are different from rooms in that they are always between two participants.
+//! There are no admins or other roles in dialogs, both participants have equal rights.
+
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use chrono::{DateTime, Utc};
+use tokio::sync::RwLock as AsyncRwLock;
+
+use crate::player::{PlayerId, PlayerRegistry, Updates};
+use crate::prelude::*;
+use crate::repo::Storage;
+
+/// Id of a conversation between two players.
+///
+/// Dialogs are identified by the pair of participants' ids. The order of ids does not matter.
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub struct DialogId(PlayerId, PlayerId);
+impl DialogId {
+    pub fn new(a: PlayerId, b: PlayerId) -> DialogId {
+        if a.as_inner() < b.as_inner() {
+            DialogId(a, b)
+        } else {
+            DialogId(b, a)
+        }
+    }
+
+    pub fn as_inner(&self) -> (&PlayerId, &PlayerId) {
+        (&self.0, &self.1)
+    }
+
+    pub fn into_inner(self) -> (PlayerId, PlayerId) {
+        (self.0, self.1)
+    }
+}
+
+struct Dialog {
+    storage_id: u32,
+    player_storage_id_1: u32,
+    player_storage_id_2: u32,
+    message_count: u32,
+}
+
+struct DialogRegistryInner {
+    dialogs: HashMap<DialogId, AsyncRwLock<Dialog>>,
+    players: Option<PlayerRegistry>,
+    storage: Storage,
+}
+
+#[derive(Clone)]
+pub struct DialogRegistry(Arc<AsyncRwLock<DialogRegistryInner>>);
+
+impl DialogRegistry {
+    pub async fn send_message(
+        &self,
+        from: PlayerId,
+        to: PlayerId,
+        body: Str,
+        created_at: &DateTime<Utc>,
+    ) -> Result<()> {
+        let mut guard = self.0.read().await;
+        let id = DialogId::new(from.clone(), to.clone());
+        let dialog = guard.dialogs.get(&id);
+        if let Some(d) = dialog {
+            let mut d = d.write().await;
+            guard
+                .storage
+                .insert_dialog_message(d.storage_id, d.message_count, from.as_inner(), &body, created_at)
+                .await?;
+            d.message_count += 1;
+        } else {
+            drop(guard);
+            let mut guard2 = self.0.write().await;
+            // double check in case concurrent access has loaded this dialog
+            if let Some(d) = guard2.dialogs.get(&id) {
+                let mut d = d.write().await;
+                guard2
+                    .storage
+                    .insert_dialog_message(d.storage_id, d.message_count, from.as_inner(), &body, created_at)
+                    .await?;
+                d.message_count += 1;
+            } else {
+                let (p1, p2) = id.as_inner();
+                tracing::info!("Dialog {id:?} not found locally, trying to load from storage");
+                let stored_dialog = match guard2.storage.retrieve_dialog(p1.as_inner(), p2.as_inner()).await? {
+                    Some(t) => t,
+                    None => {
+                        tracing::info!("Dialog {id:?} does not exist, creating a new one in storage");
+                        guard2.storage.initialize_dialog(p1.as_inner(), p2.as_inner(), created_at).await?
+                    }
+                };
+                tracing::info!("Dialog {id:?} loaded");
+                guard2
+                    .storage
+                    .insert_dialog_message(
+                        stored_dialog.id,
+                        stored_dialog.message_count,
+                        from.as_inner(),
+                        &body,
+                        created_at,
+                    )
+                    .await?;
+                let dialog = Dialog {
+                    storage_id: stored_dialog.id,
+                    player_storage_id_1: stored_dialog.participant_1,
+                    player_storage_id_2: stored_dialog.participant_2,
+                    message_count: stored_dialog.message_count + 1,
+                };
+                guard2.dialogs.insert(id.clone(), AsyncRwLock::new(dialog));
+            }
+            guard = guard2.downgrade();
+        }
+        // TODO send message to the other player and persist it
+        let Some(players) = &guard.players else {
+            tracing::error!("No player registry present");
+            return Ok(());
+        };
+        let Some(player) = players.get_player(&to).await else {
+            tracing::debug!("Player {to:?} not active, not sending message");
+            return Ok(());
+        };
+        let update = Updates::NewDialogMessage {
+            sender: from.clone(),
+            receiver: to.clone(),
+            body: body.clone(),
+            created_at: created_at.clone(),
+        };
+        player.update(update).await;
+        return Ok(());
+    }
+}
+
+impl DialogRegistry {
+    pub fn new(storage: Storage) -> DialogRegistry {
+        DialogRegistry(Arc::new(AsyncRwLock::new(DialogRegistryInner {
+            dialogs: HashMap::new(),
+            players: None,
+            storage,
+        })))
+    }
+
+    pub async fn set_players(&self, players: PlayerRegistry) {
+        let mut guard = self.0.write().await;
+        guard.players = Some(players);
+    }
+
+    pub async fn unset_players(&self) {
+        let mut guard = self.0.write().await;
+        guard.players = None;
+    }
+
+    pub fn shutdown(self) -> Result<()> {
+        let res = match Arc::try_unwrap(self.0) {
+            Ok(e) => e,
+            Err(_) => return Err(fail("failed to acquire dialogs ownership on shutdown")),
+        };
+        let res = res.into_inner();
+        drop(res);
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_dialog_id_new() {
+        let a = PlayerId::from("a").unwrap();
+        let b = PlayerId::from("b").unwrap();
+        let id1 = DialogId::new(a.clone(), b.clone());
+        let id2 = DialogId::new(a.clone(), b.clone());
+        // Dialog ids are invariant with respect to the order of participants
+        assert_eq!(id1, id2);
+        assert_eq!(id1.as_inner(), (&a, &b));
+        assert_eq!(id2.as_inner(), (&a, &b));
+    }
+}

crates/lavina-core/src/lib.rs

@@ -1,4 +1,14 @@
 //! Domain definitions and implementation of common chat logic.
+use anyhow::Result;
+use prometheus::Registry as MetricsRegistry;
+
+use crate::dialog::DialogRegistry;
+use crate::player::PlayerRegistry;
+use crate::repo::Storage;
+use crate::room::RoomRegistry;
+
+pub mod auth;
+pub mod dialog;
 pub mod player;
 pub mod prelude;
 pub mod repo;
@@ -6,3 +16,34 @@ pub mod room;
 pub mod terminator;
 
 mod table;
+
+#[derive(Clone)]
+pub struct LavinaCore {
+    pub players: PlayerRegistry,
+    pub rooms: RoomRegistry,
+    pub dialogs: DialogRegistry,
+}
+
+impl LavinaCore {
+    pub async fn new(mut metrics: MetricsRegistry, storage: Storage) -> Result<LavinaCore> {
+        // TODO shutdown all services in reverse order on error
+        let rooms = RoomRegistry::new(&mut metrics, storage.clone())?;
+        let dialogs = DialogRegistry::new(storage.clone());
+        let players = PlayerRegistry::empty(rooms.clone(), dialogs.clone(), storage.clone(), &mut metrics)?;
+        dialogs.set_players(players.clone()).await;
+        Ok(LavinaCore {
+            players,
+            rooms,
+            dialogs,
+        })
+    }
+
+    pub async fn shutdown(mut self) -> Result<()> {
+        self.players.shutdown_all().await?;
+        self.dialogs.unset_players().await;
+        self.players.shutdown()?;
+        self.dialogs.shutdown()?;
+        self.rooms.shutdown()?;
+        Ok(())
+    }
+}

crates/lavina-core/src/player.rs

@@ -7,16 +7,19 @@
 //!
 //! A player actor is a serial handler of commands from a single player. It is preferable to run all per-player validations in the player actor,
 //! so that they don't overload the room actor.
-use std::{
+use std::collections::{HashMap, HashSet};
-    collections::{HashMap, HashSet},
+use std::sync::Arc;
-    sync::{Arc, RwLock},
-};
 
+use chrono::{DateTime, Utc};
 use prometheus::{IntGauge, Registry as MetricsRegistry};
 use serde::Serialize;
 use tokio::sync::mpsc::{channel, Receiver, Sender};
+use tokio::sync::RwLock;
+use tracing::{Instrument, Span};
 
+use crate::dialog::DialogRegistry;
 use crate::prelude::*;
+use crate::repo::Storage;
 use crate::room::{RoomHandle, RoomId, RoomInfo, RoomRegistry};
 use crate::table::{AnonTable, Key as AnonKey};
 
@@ -52,12 +55,13 @@ pub struct ConnectionId(pub AnonKey);
 /// The connection is used to send commands to the player actor and to receive updates that might be sent to the client.
 pub struct PlayerConnection {
     pub connection_id: ConnectionId,
-    pub receiver: Receiver<Updates>,
+    pub receiver: Receiver<ConnectionMessage>,
     player_handle: PlayerHandle,
 }
 impl PlayerConnection {
     /// Handled in [Player::send_message].
-    pub async fn send_message(&mut self, room_id: RoomId, body: Str) -> Result<()> {
+    #[tracing::instrument(skip(self, body), name = "PlayerConnection::send_message")]
+    pub async fn send_message(&mut self, room_id: RoomId, body: Str) -> Result<SendMessageResult> {
         let (promise, deferred) = oneshot();
         let cmd = ClientCommand::SendMessage { room_id, body, promise };
         self.player_handle.send(ActorCommand::ClientCommand(cmd, self.connection_id.clone())).await;
@@ -65,6 +69,7 @@ impl PlayerConnection {
     }
 
     /// Handled in [Player::join_room].
+    #[tracing::instrument(skip(self), name = "PlayerConnection::join_room")]
     pub async fn join_room(&mut self, room_id: RoomId) -> Result<JoinResult> {
         let (promise, deferred) = oneshot();
         let cmd = ClientCommand::JoinRoom { room_id, promise };
@@ -73,6 +78,7 @@ impl PlayerConnection {
     }
 
     /// Handled in [Player::change_topic].
+    #[tracing::instrument(skip(self, new_topic), name = "PlayerConnection::change_topic")]
     pub async fn change_topic(&mut self, room_id: RoomId, new_topic: Str) -> Result<()> {
         let (promise, deferred) = oneshot();
         let cmd = ClientCommand::ChangeTopic {
@@ -85,6 +91,7 @@ impl PlayerConnection {
     }
 
     /// Handled in [Player::leave_room].
+    #[tracing::instrument(skip(self), name = "PlayerConnection::leave_room")]
     pub async fn leave_room(&mut self, room_id: RoomId) -> Result<()> {
         let (promise, deferred) = oneshot();
         let cmd = ClientCommand::LeaveRoom { room_id, promise };
@@ -97,25 +104,39 @@ impl PlayerConnection {
     }
 
     /// Handled in [Player::get_rooms].
+    #[tracing::instrument(skip(self), name = "PlayerConnection::get_rooms")]
     pub async fn get_rooms(&self) -> Result<Vec<RoomInfo>> {
         let (promise, deferred) = oneshot();
         let cmd = ClientCommand::GetRooms { promise };
         self.player_handle.send(ActorCommand::ClientCommand(cmd, self.connection_id.clone())).await;
         Ok(deferred.await?)
     }
+
+    /// Handler in [Player::send_dialog_message].
+    #[tracing::instrument(skip(self, body), name = "PlayerConnection::send_dialog_message")]
+    pub async fn send_dialog_message(&self, recipient: PlayerId, body: Str) -> Result<()> {
+        let (promise, deferred) = oneshot();
+        let cmd = ClientCommand::SendDialogMessage {
+            recipient,
+            body,
+            promise,
+        };
+        self.player_handle.send(ActorCommand::ClientCommand(cmd, self.connection_id.clone())).await;
+        Ok(deferred.await?)
+    }
 }
 
 /// Handle to a player actor.
 #[derive(Clone)]
 pub struct PlayerHandle {
-    tx: Sender<ActorCommand>,
+    tx: Sender<(ActorCommand, Span)>,
 }
 impl PlayerHandle {
     pub async fn subscribe(&self) -> PlayerConnection {
         let (sender, receiver) = channel(32);
         let (promise, deferred) = oneshot();
         let cmd = ActorCommand::AddConnection { sender, promise };
-        let _ = self.tx.send(cmd).await;
+        self.send(cmd).await;
         let connection_id = deferred.await.unwrap();
         PlayerConnection {
             connection_id,
@@ -125,8 +146,9 @@ impl PlayerHandle {
     }
 
     async fn send(&self, command: ActorCommand) {
+        let span = tracing::span!(tracing::Level::INFO, "PlayerHandle::send");
         // TODO either handle the error or doc why it is safe to ignore
-        let _ = self.tx.send(command).await;
+        let _ = self.tx.send((command, span)).await;
     }
 
     pub async fn update(&self, update: Updates) {
@@ -138,7 +160,7 @@ impl PlayerHandle {
 enum ActorCommand {
     /// Establish a new connection.
     AddConnection {
-        sender: Sender<Updates>,
+        sender: Sender<ConnectionMessage>,
         promise: Promise<ConnectionId>,
     },
     /// Terminate an existing connection.
@@ -163,7 +185,7 @@ pub enum ClientCommand {
     SendMessage {
         room_id: RoomId,
         body: Str,
-        promise: Promise<()>,
+        promise: Promise<SendMessageResult>,
     },
     ChangeTopic {
         room_id: RoomId,
@@ -173,13 +195,24 @@ pub enum ClientCommand {
     GetRooms {
         promise: Promise<Vec<RoomInfo>>,
     },
+    SendDialogMessage {
+        recipient: PlayerId,
+        body: Str,
+        promise: Promise<()>,
+    },
 }
 
 pub enum JoinResult {
     Success(RoomInfo),
+    AlreadyJoined,
     Banned,
 }
 
+pub enum SendMessageResult {
+    Success(DateTime<Utc>),
+    NoSuchRoom,
+}
+
 /// Player update event type which is sent to a player actor and from there to a connection handler.
 #[derive(Clone, Debug)]
 pub enum Updates {
@@ -191,6 +224,7 @@ pub enum Updates {
         room_id: RoomId,
         author_id: PlayerId,
         body: Str,
+        created_at: DateTime<Utc>,
     },
     RoomJoined {
         room_id: RoomId,
@@ -202,42 +236,99 @@ pub enum Updates {
     },
     /// The player was banned from the room and left it immediately.
     BannedFrom(RoomId),
+    NewDialogMessage {
+        sender: PlayerId,
+        receiver: PlayerId,
+        body: Str,
+        created_at: DateTime<Utc>,
+    },
 }
 
 /// Handle to a player registry — a shared data structure containing information about players.
 #[derive(Clone)]
 pub struct PlayerRegistry(Arc<RwLock<PlayerRegistryInner>>);
 impl PlayerRegistry {
-    pub fn empty(room_registry: RoomRegistry, metrics: &mut MetricsRegistry) -> Result<PlayerRegistry> {
+    pub fn empty(
+        room_registry: RoomRegistry,
+        dialogs: DialogRegistry,
+        storage: Storage,
+        metrics: &mut MetricsRegistry,
+    ) -> Result<PlayerRegistry> {
         let metric_active_players = IntGauge::new("chat_players_active", "Number of alive player actors")?;
         metrics.register(Box::new(metric_active_players.clone()))?;
         let inner = PlayerRegistryInner {
             room_registry,
+            dialogs,
+            storage,
             players: HashMap::new(),
             metric_active_players,
         };
         Ok(PlayerRegistry(Arc::new(RwLock::new(inner))))
     }
 
-    pub async fn get_or_create_player(&mut self, id: PlayerId) -> PlayerHandle {
+    pub fn shutdown(self) -> Result<()> {
-        let mut inner = self.0.write().unwrap();
+        let res = match Arc::try_unwrap(self.0) {
-        if let Some((handle, _)) = inner.players.get(&id) {
+            Ok(e) => e,
-            handle.clone()
+            Err(_) => return Err(fail("failed to acquire players ownership on shutdown")),
+        };
+        let res = res.into_inner();
+        drop(res);
+        Ok(())
+    }
+
+    #[tracing::instrument(skip(self), name = "PlayerRegistry::get_player")]
+    pub async fn get_player(&self, id: &PlayerId) -> Option<PlayerHandle> {
+        let inner = self.0.read().await;
+        inner.players.get(id).map(|(handle, _)| handle.clone())
+    }
+
+    #[tracing::instrument(skip(self), name = "PlayerRegistry::stop_player")]
+    pub async fn stop_player(&self, id: &PlayerId) -> Result<Option<()>> {
+        let mut inner = self.0.write().await;
+        if let Some((handle, fiber)) = inner.players.remove(id) {
+            handle.send(ActorCommand::Stop).await;
+            drop(handle);
+            fiber.await?;
+            inner.metric_active_players.dec();
+            Ok(Some(()))
         } else {
-            let (handle, fiber) = Player::launch(id.clone(), inner.room_registry.clone());
+            Ok(None)
-            inner.players.insert(id, (handle.clone(), fiber));
-            inner.metric_active_players.inc();
-            handle
         }
     }
 
-    pub async fn connect_to_player(&mut self, id: PlayerId) -> PlayerConnection {
+    #[tracing::instrument(skip(self), name = "PlayerRegistry::get_or_launch_player")]
-        let player_handle = self.get_or_create_player(id).await;
+    pub async fn get_or_launch_player(&mut self, id: &PlayerId) -> PlayerHandle {
+        let inner = self.0.read().await;
+        if let Some((handle, _)) = inner.players.get(id) {
+            handle.clone()
+        } else {
+            drop(inner);
+            let mut inner = self.0.write().await;
+            if let Some((handle, _)) = inner.players.get(id) {
+                handle.clone()
+            } else {
+                let (handle, fiber) = Player::launch(
+                    id.clone(),
+                    inner.room_registry.clone(),
+                    inner.dialogs.clone(),
+                    inner.storage.clone(),
+                )
+                .await;
+                inner.players.insert(id.clone(), (handle.clone(), fiber));
+                inner.metric_active_players.inc();
+                handle
+            }
+        }
+    }
+
+    #[tracing::instrument(skip(self), name = "PlayerRegistry::connect_to_player")]
+    pub async fn connect_to_player(&mut self, id: &PlayerId) -> PlayerConnection {
+        let player_handle = self.get_or_launch_player(id).await;
         player_handle.subscribe().await
     }
 
     pub async fn shutdown_all(&mut self) -> Result<()> {
-        let mut inner = self.0.write().unwrap();
+        let mut inner = self.0.write().await;
         for (i, (k, j)) in inner.players.drain() {
             k.send(ActorCommand::Stop).await;
             drop(k);
@@ -252,6 +343,9 @@ impl PlayerRegistry {
 /// The player registry state representation.
 struct PlayerRegistryInner {
     room_registry: RoomRegistry,
+    dialogs: DialogRegistry,
+    storage: Storage,
+    /// Active player actors.
     players: HashMap<PlayerId, (PlayerHandle, JoinHandle<Player>)>,
     metric_active_players: IntGauge,
 }
@@ -259,47 +353,87 @@ struct PlayerRegistryInner {
 /// Player actor inner state representation.
 struct Player {
     player_id: PlayerId,
-    connections: AnonTable<Sender<Updates>>,
+    storage_id: u32,
+    connections: AnonTable<Sender<ConnectionMessage>>,
     my_rooms: HashMap<RoomId, RoomHandle>,
     banned_from: HashSet<RoomId>,
-    rx: Receiver<ActorCommand>,
+    rx: Receiver<(ActorCommand, Span)>,
     handle: PlayerHandle,
     rooms: RoomRegistry,
+    dialogs: DialogRegistry,
+    storage: Storage,
 }
 impl Player {
-    fn launch(player_id: PlayerId, rooms: RoomRegistry) -> (PlayerHandle, JoinHandle<Player>) {
+    async fn launch(
+        player_id: PlayerId,
+        rooms: RoomRegistry,
+        dialogs: DialogRegistry,
+        storage: Storage,
+    ) -> (PlayerHandle, JoinHandle<Player>) {
         let (tx, rx) = channel(32);
         let handle = PlayerHandle { tx };
         let handle_clone = handle.clone();
+        let storage_id = storage.retrieve_user_id_by_name(player_id.as_inner()).await.unwrap().unwrap();
         let player = Player {
             player_id,
+            storage_id,
+            // connections are empty when the actor is just started
             connections: AnonTable::new(),
+            // room handlers will be loaded later in the started task
             my_rooms: HashMap::new(),
-            banned_from: HashSet::from([RoomId::from("Empty").unwrap()]),
+            // TODO implement and load bans
+            banned_from: HashSet::new(),
             rx,
             handle,
             rooms,
+            dialogs,
+            storage,
         };
         let fiber = tokio::task::spawn(player.main_loop());
         (handle_clone, fiber)
     }
 
     async fn main_loop(mut self) -> Self {
+        let rooms = self.storage.get_rooms_of_a_user(self.storage_id).await.unwrap();
+        for room_id in rooms {
+            let room = self.rooms.get_room(&room_id).await;
+            if let Some(room) = room {
+                self.my_rooms.insert(room_id, room);
+            } else {
+                tracing::error!("Room #{room_id:?} not found");
+            }
+        }
         while let Some(cmd) = self.rx.recv().await {
-            match cmd {
+            let (cmd, span) = cmd;
-                ActorCommand::AddConnection { sender, promise } => {
+            let should_stop = async {
-                    let connection_id = self.connections.insert(sender);
+                match cmd {
-                    if let Err(connection_id) = promise.send(ConnectionId(connection_id)) {
+                    ActorCommand::AddConnection { sender, promise } => {
-                        log::warn!("Connection {connection_id:?} terminated before finalization");
+                        let connection_id = self.connections.insert(sender);
-                        self.terminate_connection(connection_id);
+                        if let Err(connection_id) = promise.send(ConnectionId(connection_id)) {
+                            log::warn!("Connection {connection_id:?} terminated before finalization");
+                            self.terminate_connection(connection_id);
+                        }
+                        false
                     }
+                    ActorCommand::TerminateConnection(connection_id) => {
+                        self.terminate_connection(connection_id);
+                        false
+                    }
+                    ActorCommand::Update(update) => {
+                        self.handle_update(update).await;
+                        false
+                    }
+                    ActorCommand::ClientCommand(cmd, connection_id) => {
+                        self.handle_cmd(cmd, connection_id).await;
+                        false
+                    }
+                    ActorCommand::Stop => true,
                 }
-                ActorCommand::TerminateConnection(connection_id) => {
+            }
-                    self.terminate_connection(connection_id);
+            .instrument(span)
-                }
+            .await;
-                ActorCommand::Update(update) => self.handle_update(update).await,
+            if should_stop {
-                ActorCommand::ClientCommand(cmd, connection_id) => self.handle_cmd(cmd, connection_id).await,
+                break;
-                ActorCommand::Stop => break,
             }
         }
         log::debug!("Shutting down player actor #{:?}", self.player_id);
@@ -307,8 +441,9 @@ impl Player {
     }
 
     /// Handle an incoming update by changing the internal state and broadcasting it to all connections if necessary.
+    #[tracing::instrument(skip(self, update), name = "Player::handle_update")]
     async fn handle_update(&mut self, update: Updates) {
-        log::info!(
+        log::debug!(
             "Player received an update, broadcasting to {} connections",
             self.connections.len()
         );
@@ -320,7 +455,7 @@ impl Player {
             _ => {}
         }
         for (_, connection) in &self.connections {
-            let _ = connection.send(update.clone()).await;
+            let _ = connection.send(ConnectionMessage::Update(update.clone())).await;
         }
     }
 
@@ -342,8 +477,8 @@ impl Player {
                 let _ = promise.send(());
             }
             ClientCommand::SendMessage { room_id, body, promise } => {
-                self.send_message(connection_id, room_id, body).await;
+                let result = self.send_message(connection_id, room_id, body).await;
-                let _ = promise.send(());
+                let _ = promise.send(result);
             }
             ClientCommand::ChangeTopic {
                 room_id,
@@ -357,13 +492,25 @@ impl Player {
                 let result = self.get_rooms().await;
                 let _ = promise.send(result);
             }
+            ClientCommand::SendDialogMessage {
+                recipient,
+                body,
+                promise,
+            } => {
+                self.send_dialog_message(connection_id, recipient, body).await;
+                let _ = promise.send(());
+            }
         }
     }
 
+    #[tracing::instrument(skip(self), name = "Player::join_room")]
     async fn join_room(&mut self, connection_id: ConnectionId, room_id: RoomId) -> JoinResult {
         if self.banned_from.contains(&room_id) {
             return JoinResult::Banned;
         }
+        if self.my_rooms.contains_key(&room_id) {
+            return JoinResult::AlreadyJoined;
+        }
 
         let room = match self.rooms.get_or_create_room(room_id.clone()).await {
             Ok(room) => room,
@@ -372,7 +519,8 @@ impl Player {
                 todo!();
             }
         };
-        room.subscribe(self.player_id.clone(), self.handle.clone()).await;
+        room.add_member(&self.player_id, self.storage_id).await;
+        room.subscribe(&self.player_id, self.handle.clone()).await;
         self.my_rooms.insert(room_id.clone(), room.clone());
         let room_info = room.get_room_info().await;
         let update = Updates::RoomJoined {
@@ -383,10 +531,12 @@ impl Player {
         JoinResult::Success(room_info)
     }
 
+    #[tracing::instrument(skip(self), name = "Player::leave_room")]
     async fn leave_room(&mut self, connection_id: ConnectionId, room_id: RoomId) {
         let room = self.my_rooms.remove(&room_id);
         if let Some(room) = room {
             room.unsubscribe(&self.player_id).await;
+            room.remove_member(&self.player_id, self.storage_id).await;
         }
         let update = Updates::RoomLeft {
             room_id,
@@ -395,32 +545,36 @@ impl Player {
         self.broadcast_update(update, connection_id).await;
     }
 
-    async fn send_message(&mut self, connection_id: ConnectionId, room_id: RoomId, body: Str) {
+    #[tracing::instrument(skip(self, body), name = "Player::send_message")]
-        let room = self.rooms.get_room(&room_id).await;
+    async fn send_message(&mut self, connection_id: ConnectionId, room_id: RoomId, body: Str) -> SendMessageResult {
-        if let Some(room) = room {
+        let Some(room) = self.my_rooms.get(&room_id) else {
-            room.send_message(self.player_id.clone(), body.clone()).await;
-        } else {
             tracing::info!("no room found");
-        }
+            return SendMessageResult::NoSuchRoom;
+        };
+        let created_at = chrono::Utc::now();
+        room.send_message(&self.player_id, body.clone(), created_at.clone()).await;
         let update = Updates::NewMessage {
             room_id,
             author_id: self.player_id.clone(),
             body,
+            created_at,
         };
         self.broadcast_update(update, connection_id).await;
+        SendMessageResult::Success(created_at)
     }
 
+    #[tracing::instrument(skip(self, new_topic), name = "Player::change_topic")]
     async fn change_topic(&mut self, connection_id: ConnectionId, room_id: RoomId, new_topic: Str) {
-        let room = self.rooms.get_room(&room_id).await;
+        let Some(room) = self.my_rooms.get(&room_id) else {
-        if let Some(mut room) = room {
-            room.set_topic(self.player_id.clone(), new_topic.clone()).await;
-        } else {
             tracing::info!("no room found");
-        }
+            return;
+        };
+        room.set_topic(&self.player_id, new_topic.clone()).await;
         let update = Updates::RoomTopicChanged { room_id, new_topic };
         self.broadcast_update(update, connection_id).await;
     }
 
+    #[tracing::instrument(skip(self), name = "Player::get_rooms")]
     async fn get_rooms(&self) -> Vec<RoomInfo> {
         let mut response = vec![];
         for (_, handle) in &self.my_rooms {
@@ -429,16 +583,41 @@ impl Player {
         response
     }
 
+    #[tracing::instrument(skip(self, body), name = "Player::send_dialog_message")]
+    async fn send_dialog_message(&self, connection_id: ConnectionId, recipient: PlayerId, body: Str) {
+        let created_at = chrono::Utc::now();
+        self.dialogs.send_message(self.player_id.clone(), recipient.clone(), body.clone(), &created_at).await.unwrap();
+        let update = Updates::NewDialogMessage {
+            sender: self.player_id.clone(),
+            receiver: recipient.clone(),
+            body,
+            created_at,
+        };
+        self.broadcast_update(update, connection_id).await;
+    }
+
     /// Broadcasts an update to all connections except the one with the given id.
     ///
     /// This is called after handling a client command.
     /// Sending the update to the connection which sent the command is handled by the connection itself.
+    #[tracing::instrument(skip(self, update), name = "Player::broadcast_update")]
     async fn broadcast_update(&self, update: Updates, except: ConnectionId) {
         for (a, b) in &self.connections {
             if ConnectionId(a) == except {
                 continue;
             }
-            let _ = b.send(update.clone()).await;
+            let _ = b.send(ConnectionMessage::Update(update.clone())).await;
         }
     }
 }
+
+pub enum ConnectionMessage {
+    Update(Updates),
+    Stop(StopReason),
+}
+
+#[derive(Debug)]
+pub enum StopReason {
+    ServerShutdown,
+    InternalError,
+}

crates/lavina-core/src/repo/auth.rs

@@ -0,0 +1,20 @@
+use anyhow::Result;
+
+use crate::repo::Storage;
+
+impl Storage {
+    #[tracing::instrument(skip(self), name = "Storage::set_argon2_challenge")]
+    pub async fn set_argon2_challenge(&self, user_id: u32, hash: &str) -> Result<()> {
+        let mut executor = self.conn.lock().await;
+        sqlx::query(
+            "insert into challenges_argon2_password(user_id, hash)
+            values (?, ?)
+            on conflict(user_id) do update set hash = excluded.hash;",
+        )
+        .bind(user_id)
+        .bind(hash)
+        .execute(&mut *executor)
+        .await?;
+        Ok(())
+    }
+}

crates/lavina-core/src/repo/dialog.rs

@@ -0,0 +1,91 @@
+use anyhow::{anyhow, Result};
+use chrono::{DateTime, Utc};
+use sqlx::FromRow;
+
+use crate::repo::Storage;
+
+impl Storage {
+    #[tracing::instrument(skip(self), name = "Storage::retrieve_dialog")]
+    pub async fn retrieve_dialog(&self, participant_1: &str, participant_2: &str) -> Result<Option<StoredDialog>> {
+        let mut executor = self.conn.lock().await;
+        let res = sqlx::query_as(
+            "select r.id, r.participant_1, r.participant_2, r.message_count
+            from dialogs r join users u1 on r.participant_1 = u1.id join users u2 on r.participant_2 = u2.id
+            where u1.name = ? and u2.name = ?;",
+        )
+        .bind(participant_1)
+        .bind(participant_2)
+        .fetch_optional(&mut *executor)
+        .await?;
+
+        Ok(res)
+    }
+
+    #[tracing::instrument(skip(self, content, created_at), name = "Storage::insert_dialog_message")]
+    pub async fn insert_dialog_message(
+        &self,
+        dialog_id: u32,
+        id: u32,
+        author_id: &str,
+        content: &str,
+        created_at: &DateTime<Utc>,
+    ) -> Result<()> {
+        let mut executor = self.conn.lock().await;
+        let res: Option<(u32,)> = sqlx::query_as("select id from users where name = ?;")
+            .bind(author_id)
+            .fetch_optional(&mut *executor)
+            .await?;
+        let Some((author_id,)) = res else {
+            return Err(anyhow!("No such user"));
+        };
+        sqlx::query(
+            "insert into dialog_messages(dialog_id, id, author_id, content, created_at)
+            values (?, ?, ?, ?, ?);
+            update dialogs set message_count = message_count + 1 where id = ?;",
+        )
+        .bind(dialog_id)
+        .bind(id)
+        .bind(author_id)
+        .bind(content)
+        .bind(created_at)
+        .bind(dialog_id)
+        .execute(&mut *executor)
+        .await?;
+
+        Ok(())
+    }
+
+    #[tracing::instrument(skip(self, created_at), name = "Storage::initialize_dialog")]
+    pub async fn initialize_dialog(
+        &self,
+        participant_1: &str,
+        participant_2: &str,
+        created_at: &DateTime<Utc>,
+    ) -> Result<StoredDialog> {
+        let mut executor = self.conn.lock().await;
+        let res: StoredDialog = sqlx::query_as(
+            "insert into dialogs(participant_1, participant_2, created_at)
+            values (
+                (select id from users where name = ?),
+                (select id from users where name = ?),
+                ?
+            )
+            returning id, participant_1, participant_2, message_count;",
+        )
+        .bind(participant_1)
+        .bind(participant_2)
+        .bind(&created_at)
+        .fetch_one(&mut *executor)
+        .await?;
+
+        Ok(res)
+    }
+}
+
+#[derive(FromRow)]
+pub struct StoredDialog {
+    pub id: u32,
+    pub participant_1: u32,
+    pub participant_2: u32,
+    pub message_count: u32,
+}

crates/lavina-core/src/repo/mod.rs

@@ -4,6 +4,7 @@ use std::str::FromStr;
 use std::sync::Arc;
 
 use anyhow::anyhow;
+use chrono::{DateTime, Utc};
 use serde::Deserialize;
 use sqlx::sqlite::SqliteConnectOptions;
 use sqlx::{ConnectOptions, Connection, FromRow, Sqlite, SqliteConnection, Transaction};
@@ -11,6 +12,11 @@ use tokio::sync::Mutex;
 
 use crate::prelude::*;
 
+mod auth;
+mod dialog;
+mod room;
+mod user;
+
 #[derive(Deserialize, Debug, Clone)]
 pub struct StorageConfig {
     pub db_path: String,
@@ -34,11 +40,13 @@ impl Storage {
         Ok(Storage { conn })
     }
 
-    pub async fn retrieve_user_by_name(&mut self, name: &str) -> Result<Option<StoredUser>> {
+    #[tracing::instrument(skip(self), name = "Storage::retrieve_user_by_name")]
+    pub async fn retrieve_user_by_name(&self, name: &str) -> Result<Option<StoredUser>> {
         let mut executor = self.conn.lock().await;
         let res = sqlx::query_as(
-            "select u.id, u.name, c.password
+            "select u.id, u.name, c.password, a.hash as argon2_hash
             from users u left join challenges_plain_password c on u.id = c.user_id
+            left join challenges_argon2_password a on u.id = a.user_id
             where u.name = ?;",
         )
         .bind(name)
@@ -48,7 +56,8 @@ impl Storage {
         Ok(res)
     }
 
-    pub async fn retrieve_room_by_name(&mut self, name: &str) -> Result<Option<StoredRoom>> {
+    #[tracing::instrument(skip(self), name = "Storage::retrieve_room_by_name")]
+    pub async fn retrieve_room_by_name(&self, name: &str) -> Result<Option<StoredRoom>> {
         let mut executor = self.conn.lock().await;
         let res = sqlx::query_as(
             "select id, name, topic, message_count
@@ -62,6 +71,7 @@ impl Storage {
         Ok(res)
     }
 
+    #[tracing::instrument(skip(self, topic), name = "Storage::create_new_room")]
     pub async fn create_new_room(&mut self, name: &str, topic: &str) -> Result<u32> {
         let mut executor = self.conn.lock().await;
         let (id,): (u32,) = sqlx::query_as(
@@ -77,7 +87,15 @@ impl Storage {
         Ok(id)
     }
 
-    pub async fn insert_message(&mut self, room_id: u32, id: u32, content: &str, author_id: &str) -> Result<()> {
+    #[tracing::instrument(skip(self, content, created_at), name = "Storage::insert_message")]
+    pub async fn insert_message(
+        &mut self,
+        room_id: u32,
+        id: u32,
+        content: &str,
+        author_id: &str,
+        created_at: &DateTime<Utc>,
+    ) -> Result<()> {
         let mut executor = self.conn.lock().await;
         let res: Option<(u32,)> = sqlx::query_as("select id from users where name = ?;")
             .bind(author_id)
@@ -87,14 +105,15 @@ impl Storage {
             return Err(anyhow!("No such user"));
         };
         sqlx::query(
-            "insert into messages(room_id, id, content, author_id)
+            "insert into messages(room_id, id, content, author_id, created_at)
-            values (?, ?, ?, ?);
+            values (?, ?, ?, ?, ?);
             update rooms set message_count = message_count + 1 where id = ?;",
         )
         .bind(room_id)
         .bind(id)
         .bind(content)
         .bind(author_id)
+        .bind(created_at.to_string())
         .bind(room_id)
         .execute(&mut *executor)
         .await?;
@@ -112,6 +131,7 @@ impl Storage {
         Ok(())
     }
 
+    #[tracing::instrument(skip(self), name = "Storage::create_user")]
     pub async fn create_user(&mut self, name: &str) -> Result<()> {
         let query = sqlx::query(
             "insert into users(name)
@@ -124,7 +144,8 @@ impl Storage {
         Ok(())
     }
 
-    pub async fn set_password<'a>(&'a mut self, name: &'a str, pwd: &'a str) -> Result<Option<()>> {
+    #[tracing::instrument(skip(self, pwd), name = "Storage::set_password")]
+    pub async fn set_password<'a>(&'a self, name: &'a str, pwd: &'a str) -> Result<Option<()>> {
         async fn inner(txn: &mut Transaction<'_, Sqlite>, name: &str, pwd: &str) -> Result<Option<()>> {
             let id: Option<(u32,)> = sqlx::query_as("select * from users where name = ? limit 1;")
                 .bind(name)
@@ -162,6 +183,7 @@ pub struct StoredUser {
     pub id: u32,
     pub name: String,
     pub password: Option<String>,
+    pub argon2_hash: Option<Box<str>>,
 }
 
 #[derive(FromRow)]

crates/lavina-core/src/repo/room.rs

@@ -0,0 +1,51 @@
+use anyhow::Result;
+
+use crate::repo::Storage;
+
+impl Storage {
+    #[tracing::instrument(skip(self), name = "Storage::add_room_member")]
+    pub async fn add_room_member(&self, room_id: u32, player_id: u32) -> Result<()> {
+        let mut executor = self.conn.lock().await;
+        sqlx::query(
+            "insert into memberships(user_id, room_id, status)
+            values (?, ?, 1);",
+        )
+        .bind(player_id)
+        .bind(room_id)
+        .execute(&mut *executor)
+        .await?;
+
+        Ok(())
+    }
+
+    #[tracing::instrument(skip(self), name = "Storage::remove_room_member")]
+    pub async fn remove_room_member(&self, room_id: u32, player_id: u32) -> Result<()> {
+        let mut executor = self.conn.lock().await;
+        sqlx::query(
+            "delete from memberships
+            where user_id = ? and room_id = ?;",
+        )
+        .bind(player_id)
+        .bind(room_id)
+        .execute(&mut *executor)
+        .await?;
+
+        Ok(())
+    }
+
+    #[tracing::instrument(skip(self, topic), name = "Storage::set_room_topic")]
+    pub async fn set_room_topic(&mut self, id: u32, topic: &str) -> Result<()> {
+        let mut executor = self.conn.lock().await;
+        sqlx::query(
+            "update rooms
+            set topic = ?
+            where id = ?;",
+        )
+        .bind(topic)
+        .bind(id)
+        .fetch_optional(&mut *executor)
+        .await?;
+
+        Ok(())
+    }
+}

crates/lavina-core/src/repo/user.rs

@@ -0,0 +1,30 @@
+use anyhow::Result;
+
+use crate::repo::Storage;
+use crate::room::RoomId;
+
+impl Storage {
+    pub async fn retrieve_user_id_by_name(&self, name: &str) -> Result<Option<u32>> {
+        let mut executor = self.conn.lock().await;
+        let res: Option<(u32,)> = sqlx::query_as("select u.id from users u where u.name = ?;")
+            .bind(name)
+            .fetch_optional(&mut *executor)
+            .await?;
+
+        Ok(res.map(|(id,)| id))
+    }
+
+    pub async fn get_rooms_of_a_user(&self, user_id: u32) -> Result<Vec<RoomId>> {
+        let mut executor = self.conn.lock().await;
+        let res: Vec<(String,)> = sqlx::query_as(
+            "select r.name
+            from memberships m inner join rooms r on m.room_id = r.id
+            where m.user_id = ?;",
+        )
+        .bind(user_id)
+        .fetch_all(&mut *executor)
+        .await?;
+
+        res.into_iter().map(|(room_id,)| RoomId::from(room_id)).collect()
+    }
+}

crates/lavina-core/src/room.rs

@@ -1,6 +1,8 @@
 //! Domain of rooms — chats with multiple participants.
+use std::collections::HashSet;
 use std::{collections::HashMap, hash::Hash, sync::Arc};
 
+use chrono::{DateTime, Utc};
 use prometheus::{IntGauge, Registry as MetricRegistry};
 use serde::Serialize;
 use tokio::sync::RwLock as AsyncRwLock;
@@ -46,29 +48,23 @@ impl RoomRegistry {
         Ok(RoomRegistry(Arc::new(AsyncRwLock::new(inner))))
     }
 
+    pub fn shutdown(self) -> Result<()> {
+        let res = match Arc::try_unwrap(self.0) {
+            Ok(e) => e,
+            Err(_) => return Err(fail("failed to acquire rooms ownership on shutdown")),
+        };
+        let res = res.into_inner();
+        // TODO drop all rooms
+        drop(res);
+        Ok(())
+    }
+
+    #[tracing::instrument(skip(self), name = "RoomRegistry::get_or_create_room")]
     pub async fn get_or_create_room(&mut self, room_id: RoomId) -> Result<RoomHandle> {
         let mut inner = self.0.write().await;
-        if let Some(room_handle) = inner.rooms.get(&room_id) {
+        if let Some(room_handle) = inner.get_or_load_room(&room_id).await? {
-            // room was already loaded into memory
-            log::debug!("Room {} was loaded already", &room_id.0);
             Ok(room_handle.clone())
-        } else if let Some(stored_room) = inner.storage.retrieve_room_by_name(&*room_id.0).await? {
-            // room exists, but was not loaded
-            log::debug!("Loading room {}...", &room_id.0);
-            let room = Room {
-                storage_id: stored_room.id,
-                room_id: room_id.clone(),
-                subscriptions: HashMap::new(), // TODO figure out how to populate subscriptions
-                topic: stored_room.topic.into(),
-                message_count: stored_room.message_count,
-                storage: inner.storage.clone(),
-            };
-            let room_handle = RoomHandle(Arc::new(AsyncRwLock::new(room)));
-            inner.rooms.insert(room_id, room_handle.clone());
-            inner.metric_active_rooms.inc();
-            Ok(room_handle)
         } else {
-            // room does not exist, create it and load
             log::debug!("Creating room {}...", &room_id.0);
             let topic = "New room";
             let id = inner.storage.create_new_room(&*room_id.0, &*topic).await?;
@@ -76,6 +72,7 @@ impl RoomRegistry {
                 storage_id: id,
                 room_id: room_id.clone(),
                 subscriptions: HashMap::new(),
+                members: HashSet::new(),
                 topic: topic.into(),
                 message_count: 0,
                 storage: inner.storage.clone(),
@@ -87,12 +84,13 @@ impl RoomRegistry {
         }
     }
 
+    #[tracing::instrument(skip(self), name = "RoomRegistry::get_room")]
     pub async fn get_room(&self, room_id: &RoomId) -> Option<RoomHandle> {
-        let inner = self.0.read().await;
+        let mut inner = self.0.write().await;
-        let res = inner.rooms.get(room_id);
+        inner.get_or_load_room(room_id).await.unwrap()
-        res.map(|r| r.clone())
     }
 
+    #[tracing::instrument(skip(self), name = "RoomRegistry::get_all_rooms")]
     pub async fn get_all_rooms(&self) -> Vec<RoomInfo> {
         let handles = {
             let inner = self.0.read().await;
@@ -113,17 +111,71 @@ struct RoomRegistryInner {
     storage: Storage,
 }
 
+impl RoomRegistryInner {
+    #[tracing::instrument(skip(self), name = "RoomRegistryInner::get_or_load_room")]
+    async fn get_or_load_room(&mut self, room_id: &RoomId) -> Result<Option<RoomHandle>> {
+        if let Some(room_handle) = self.rooms.get(room_id) {
+            log::debug!("Room {} was loaded already", &room_id.0);
+            Ok(Some(room_handle.clone()))
+        } else if let Some(stored_room) = self.storage.retrieve_room_by_name(&*room_id.0).await? {
+            log::debug!("Loading room {}...", &room_id.0);
+            let room = Room {
+                storage_id: stored_room.id,
+                room_id: room_id.clone(),
+                subscriptions: HashMap::new(),
+                members: HashSet::new(), // TODO load members from storage
+                topic: stored_room.topic.into(),
+                message_count: stored_room.message_count,
+                storage: self.storage.clone(),
+            };
+            let room_handle = RoomHandle(Arc::new(AsyncRwLock::new(room)));
+            self.rooms.insert(room_id.clone(), room_handle.clone());
+            self.metric_active_rooms.inc();
+            Ok(Some(room_handle))
+        } else {
+            tracing::debug!("Room {} does not exist", &room_id.0);
+            Ok(None)
+        }
+    }
+}
+
 #[derive(Clone)]
 pub struct RoomHandle(Arc<AsyncRwLock<Room>>);
 impl RoomHandle {
-    pub async fn subscribe(&self, player_id: PlayerId, player_handle: PlayerHandle) {
+    #[tracing::instrument(skip(self, player_handle), name = "RoomHandle::subscribe")]
+    pub async fn subscribe(&self, player_id: &PlayerId, player_handle: PlayerHandle) {
         let mut lock = self.0.write().await;
-        lock.add_subscriber(player_id, player_handle).await;
+        tracing::info!("Adding a subscriber to a room");
+        lock.subscriptions.insert(player_id.clone(), player_handle);
     }
 
+    #[tracing::instrument(skip(self), name = "RoomHandle::add_member")]
+    pub async fn add_member(&self, player_id: &PlayerId, player_storage_id: u32) {
+        let mut lock = self.0.write().await;
+        tracing::info!("Adding a new member to a room");
+        let room_storage_id = lock.storage_id;
+        lock.storage.add_room_member(room_storage_id, player_storage_id).await.unwrap();
+        lock.members.insert(player_id.clone());
+        let update = Updates::RoomJoined {
+            room_id: lock.room_id.clone(),
+            new_member_id: player_id.clone(),
+        };
+        lock.broadcast_update(update, player_id).await;
+    }
+
+    #[tracing::instrument(skip(self), name = "RoomHandle::unsubscribe")]
     pub async fn unsubscribe(&self, player_id: &PlayerId) {
         let mut lock = self.0.write().await;
         lock.subscriptions.remove(player_id);
+    }
+
+    #[tracing::instrument(skip(self), name = "RoomHandle::remove_member")]
+    pub async fn remove_member(&self, player_id: &PlayerId, player_storage_id: u32) {
+        let mut lock = self.0.write().await;
+        tracing::info!("Removing a member from a room");
+        let room_storage_id = lock.storage_id;
+        lock.storage.remove_room_member(room_storage_id, player_storage_id).await.unwrap();
+        lock.members.remove(player_id);
         let update = Updates::RoomLeft {
             room_id: lock.room_id.clone(),
             former_member_id: player_id.clone(),
@@ -131,14 +183,16 @@ impl RoomHandle {
         lock.broadcast_update(update, player_id).await;
     }
 
-    pub async fn send_message(&self, player_id: PlayerId, body: Str) {
+    #[tracing::instrument(skip(self, body, created_at), name = "RoomHandle::send_message")]
+    pub async fn send_message(&self, player_id: &PlayerId, body: Str, created_at: DateTime<Utc>) {
         let mut lock = self.0.write().await;
-        let res = lock.send_message(player_id, body).await;
+        let res = lock.send_message(player_id, body, created_at).await;
         if let Err(err) = res {
             log::warn!("Failed to send message: {err:?}");
         }
     }
 
+    #[tracing::instrument(skip(self), name = "RoomHandle::get_room_info")]
     pub async fn get_room_info(&self) -> RoomInfo {
         let lock = self.0.read().await;
         RoomInfo {
@@ -148,14 +202,17 @@ impl RoomHandle {
         }
     }
 
-    pub async fn set_topic(&mut self, changer_id: PlayerId, new_topic: Str) {
+    #[tracing::instrument(skip(self, new_topic), name = "RoomHandle::set_topic")]
+    pub async fn set_topic(&self, changer_id: &PlayerId, new_topic: Str) {
         let mut lock = self.0.write().await;
+        let storage_id = lock.storage_id;
         lock.topic = new_topic.clone();
+        lock.storage.set_room_topic(storage_id, &new_topic).await.unwrap();
         let update = Updates::RoomTopicChanged {
             room_id: lock.room_id.clone(),
             new_topic: new_topic.clone(),
         };
-        lock.broadcast_update(update, &changer_id).await;
+        lock.broadcast_update(update, changer_id).await;
     }
 }
 
@@ -166,32 +223,34 @@ struct Room {
     room_id: RoomId,
     /// Player actors on the local node which are subscribed to this room's updates.
     subscriptions: HashMap<PlayerId, PlayerHandle>,
+    /// Members of the room.
+    members: HashSet<PlayerId>,
     /// The total number of messages. Used to calculate the id of the new message.
     message_count: u32,
     topic: Str,
     storage: Storage,
 }
 impl Room {
-    async fn add_subscriber(&mut self, player_id: PlayerId, player_handle: PlayerHandle) {
+    #[tracing::instrument(skip(self, body, created_at), name = "Room::send_message")]
-        tracing::info!("Adding a subscriber to room");
+    async fn send_message(&mut self, author_id: &PlayerId, body: Str, created_at: DateTime<Utc>) -> Result<()> {
-        self.subscriptions.insert(player_id.clone(), player_handle);
-        let update = Updates::RoomJoined {
-            room_id: self.room_id.clone(),
-            new_member_id: player_id.clone(),
-        };
-        self.broadcast_update(update, &player_id).await;
-    }
-
-    async fn send_message(&mut self, author_id: PlayerId, body: Str) -> Result<()> {
         tracing::info!("Adding a message to room");
-        self.storage.insert_message(self.storage_id, self.message_count, &body, &*author_id.as_inner()).await?;
+        self.storage
+            .insert_message(
+                self.storage_id,
+                self.message_count,
+                &body,
+                &*author_id.as_inner(),
+                &created_at,
+            )
+            .await?;
         self.message_count += 1;
         let update = Updates::NewMessage {
             room_id: self.room_id.clone(),
             author_id: author_id.clone(),
             body,
+            created_at,
         };
-        self.broadcast_update(update, &author_id).await;
+        self.broadcast_update(update, author_id).await;
         Ok(())
     }
 
@@ -199,6 +258,7 @@ impl Room {
     ///
     /// This is called after handling a client command.
     /// Sending the update to the player who sent the command is handled by the player actor.
+    #[tracing::instrument(skip(self, update), name = "Room::broadcast_update")]
     async fn broadcast_update(&self, update: Updates, except: &PlayerId) {
         tracing::debug!("Broadcasting an update to {} subs", self.subscriptions.len());
         for (player_id, sub) in &self.subscriptions {

crates/mgmt-api/src/lib.rs

@@ -11,6 +11,11 @@ pub struct CreatePlayerRequest<'a> {
     pub name: &'a str,
 }
 
+#[derive(Serialize, Deserialize)]
+pub struct StopPlayerRequest<'a> {
+    pub name: &'a str,
+}
+
 #[derive(Serialize, Deserialize)]
 pub struct ChangePasswordRequest<'a> {
     pub player_name: &'a str,
@@ -19,6 +24,7 @@ pub struct ChangePasswordRequest<'a> {
 
 pub mod paths {
     pub const CREATE_PLAYER: &'static str = "/mgmt/create_player";
+    pub const STOP_PLAYER: &'static str = "/mgmt/stop_player";
     pub const SET_PASSWORD: &'static str = "/mgmt/set_password";
 }
 

crates/projection-irc/Cargo.toml

@@ -12,6 +12,7 @@ tokio.workspace = true
 prometheus.workspace = true
 futures-util.workspace = true
 nonempty.workspace = true
+chrono.workspace = true
 bitflags = "2.4.1"
 proto-irc = { path = "../proto-irc" }
 sasl = { path = "../sasl" }

crates/projection-irc/src/cap.rs

@@ -1,9 +1,10 @@
 use bitflags::bitflags;
 
 bitflags! {
-    #[derive(Debug)]
+    #[derive(Debug, Clone, Copy)]
     pub struct Capabilities: u32 {
         const None = 0;
         const Sasl = 1 << 0;
+        const ServerTime = 1 << 1;
     }
 }

crates/projection-irc/src/lib.rs

@@ -2,6 +2,7 @@ use std::collections::HashMap;
 use std::net::SocketAddr;
 
 use anyhow::{anyhow, Result};
+use chrono::SecondsFormat;
 use futures_util::future::join_all;
 use nonempty::nonempty;
 use nonempty::NonEmpty;
@@ -13,17 +14,19 @@ use tokio::net::tcp::{ReadHalf, WriteHalf};
 use tokio::net::{TcpListener, TcpStream};
 use tokio::sync::mpsc::channel;
 
+use lavina_core::auth::{Authenticator, Verdict};
 use lavina_core::player::*;
 use lavina_core::prelude::*;
 use lavina_core::repo::Storage;
 use lavina_core::room::{RoomId, RoomInfo, RoomRegistry};
 use lavina_core::terminator::Terminator;
+use lavina_core::LavinaCore;
 use proto_irc::client::CapabilitySubcommand;
 use proto_irc::client::{client_message, ClientMessage};
 use proto_irc::server::CapSubBody;
 use proto_irc::server::{AwayStatus, ServerMessage, ServerMessageBody};
 use proto_irc::user::PrefixedNick;
-use proto_irc::{Chan, Recipient};
+use proto_irc::{Chan, Recipient, Tag};
 use sasl::AuthBody;
 mod cap;
 mod commands;
@@ -50,14 +53,14 @@ struct RegisteredUser {
      */
     username: Str,
     realname: Str,
+    enabled_capabilities: Capabilities,
 }
 
 async fn handle_socket(
     config: ServerConfig,
     mut stream: TcpStream,
     socket_addr: &SocketAddr,
-    players: PlayerRegistry,
+    mut core: LavinaCore,
-    rooms: RoomRegistry,
     termination: Deferred<()>, // TODO use it to stop the connection gracefully
     mut storage: Storage,
 ) -> Result<()> {
@@ -77,7 +80,7 @@ async fn handle_socket(
             match registered_user {
                 Ok(user) => {
                     log::debug!("User registered");
-                    handle_registered_socket(config, players, rooms, &mut reader, &mut writer, user, &mut storage).await?;
+                    handle_registered_socket(config, core.players, core.rooms, &mut reader, &mut writer, user).await?;
                 }
                 Err(err) => {
                     log::debug!("Registration failed: {err}");
@@ -88,6 +91,266 @@ async fn handle_socket(
     Ok(())
 }
 
+struct RegistrationState {
+    /// The last received `NICK` message.
+    future_nickname: Option<Str>,
+    /// The last received `USER` message.
+    future_username: Option<(Str, Str)>,
+    enabled_capabilities: Capabilities,
+    /// `CAP LS` or `CAP REQ` was received, but not `CAP END`.
+    cap_negotiation_in_progress: bool,
+    /// The last received `PASS` message.
+    pass: Option<Str>,
+    authentication_started: bool,
+    validated_user: Option<Str>,
+}
+
+impl RegistrationState {
+    fn new() -> RegistrationState {
+        RegistrationState {
+            future_nickname: None,
+            future_username: None,
+            enabled_capabilities: Capabilities::None,
+            cap_negotiation_in_progress: false,
+            pass: None,
+            authentication_started: false,
+            validated_user: None,
+        }
+    }
+
+    /// Handle an incoming message from the client during the registration process.
+    ///
+    /// Returns `Some` if the user is fully registered, `None` if the registration is still in progress.
+    async fn handle_msg(
+        &mut self,
+        msg: ClientMessage,
+        writer: &mut BufWriter<WriteHalf<'_>>,
+        storage: &mut Storage,
+        config: &ServerConfig,
+    ) -> Result<Option<RegisteredUser>> {
+        match msg {
+            ClientMessage::Pass { password } => {
+                self.pass = Some(password);
+                Ok(None)
+            }
+            ClientMessage::Capability { subcommand } => match subcommand {
+                CapabilitySubcommand::List { code: _ } => {
+                    self.cap_negotiation_in_progress = true;
+                    ServerMessage {
+                        tags: vec![],
+                        sender: Some(config.server_name.clone().into()),
+                        body: ServerMessageBody::Cap {
+                            target: self.future_nickname.clone().unwrap_or_else(|| "*".into()),
+                            subcmd: CapSubBody::Ls("sasl=PLAIN server-time".into()),
+                        },
+                    }
+                    .write_async(writer)
+                    .await?;
+                    writer.flush().await?;
+                    Ok(None)
+                }
+                CapabilitySubcommand::Req(caps) => {
+                    self.cap_negotiation_in_progress = true;
+                    let mut acked = vec![];
+                    let mut naked = vec![];
+                    for cap in caps {
+                        if &*cap.name == "sasl" {
+                            if cap.to_disable {
+                                self.enabled_capabilities &= !Capabilities::Sasl;
+                            } else {
+                                self.enabled_capabilities |= Capabilities::Sasl;
+                            }
+                            acked.push(cap);
+                        } else if &*cap.name == "server-time" {
+                            if cap.to_disable {
+                                self.enabled_capabilities &= !Capabilities::ServerTime;
+                            } else {
+                                self.enabled_capabilities |= Capabilities::ServerTime;
+                            }
+                            acked.push(cap);
+                        } else {
+                            naked.push(cap);
+                        }
+                    }
+                    let mut ack_body = String::new();
+                    if let Some((first, tail)) = acked.split_first() {
+                        if first.to_disable {
+                            ack_body.push('-');
+                        }
+                        ack_body += &*first.name;
+                        for cap in tail {
+                            ack_body.push(' ');
+                            if cap.to_disable {
+                                ack_body.push('-');
+                            }
+                            ack_body += &*cap.name;
+                        }
+                    }
+                    ServerMessage {
+                        tags: vec![],
+                        sender: Some(config.server_name.clone().into()),
+                        body: ServerMessageBody::Cap {
+                            target: self.future_nickname.clone().unwrap_or_else(|| "*".into()),
+                            subcmd: CapSubBody::Ack(ack_body.into()),
+                        },
+                    }
+                    .write_async(writer)
+                    .await?;
+                    writer.flush().await?;
+                    Ok(None)
+                }
+                CapabilitySubcommand::End => {
+                    let Some((ref username, ref realname)) = self.future_username else {
+                        self.cap_negotiation_in_progress = false;
+                        return Ok(None);
+                    };
+                    let Some(nickname) = self.future_nickname.clone() else {
+                        self.cap_negotiation_in_progress = false;
+                        return Ok(None);
+                    };
+                    let username = username.clone();
+                    let realname = realname.clone();
+                    let candidate_user = RegisteredUser {
+                        nickname: nickname.clone(),
+                        username,
+                        realname,
+                        enabled_capabilities: self.enabled_capabilities,
+                    };
+                    self.finalize_auth(candidate_user, writer, storage, config).await
+                }
+            },
+            ClientMessage::Nick { nickname } => {
+                if self.cap_negotiation_in_progress {
+                    self.future_nickname = Some(nickname);
+                    Ok(None)
+                } else if let Some((username, realname)) = &self.future_username.clone() {
+                    let candidate_user = RegisteredUser {
+                        nickname: nickname.clone(),
+                        username: username.clone(),
+                        realname: realname.clone(),
+                        enabled_capabilities: self.enabled_capabilities,
+                    };
+                    self.finalize_auth(candidate_user, writer, storage, config).await
+                } else {
+                    self.future_nickname = Some(nickname);
+                    Ok(None)
+                }
+            }
+            ClientMessage::User { username, realname } => {
+                if self.cap_negotiation_in_progress {
+                    self.future_username = Some((username, realname));
+                    Ok(None)
+                } else if let Some(nickname) = self.future_nickname.clone() {
+                    let candidate_user = RegisteredUser {
+                        nickname: nickname.clone(),
+                        username,
+                        realname,
+                        enabled_capabilities: self.enabled_capabilities,
+                    };
+                    self.finalize_auth(candidate_user, writer, storage, config).await
+                } else {
+                    self.future_username = Some((username, realname));
+                    Ok(None)
+                }
+            }
+            ClientMessage::Authenticate(body) => {
+                if !self.authentication_started {
+                    tracing::debug!("Received authentication request");
+                    if &*body == "PLAIN" {
+                        tracing::debug!("Authentication request with method PLAIN");
+                        self.authentication_started = true;
+                        ServerMessage {
+                            tags: vec![],
+                            sender: Some(config.server_name.clone().into()),
+                            body: ServerMessageBody::Authenticate("+".into()),
+                        }
+                        .write_async(writer)
+                        .await?;
+                        writer.flush().await?;
+                        Ok(None)
+                    } else {
+                        let target = self.future_nickname.clone().unwrap_or_else(|| "*".into());
+                        sasl_fail_message(config.server_name.clone(), target, "Unsupported mechanism".into())
+                            .write_async(writer)
+                            .await?;
+                        writer.flush().await?;
+                        Ok(None)
+                    }
+                } else {
+                    let body = AuthBody::from_str(body.as_bytes())?;
+                    if let Err(e) = auth_user(storage, &body.login, &body.password).await {
+                        tracing::warn!("Authentication failed: {:?}", e);
+                        let target = self.future_nickname.clone().unwrap_or_else(|| "*".into());
+                        sasl_fail_message(config.server_name.clone(), target, "Bad credentials".into())
+                            .write_async(writer)
+                            .await?;
+                        writer.flush().await?;
+                        Ok(None)
+                    } else {
+                        let login: Str = body.login.into();
+                        self.validated_user = Some(login.clone());
+                        ServerMessage {
+                            tags: vec![],
+                            sender: Some(config.server_name.clone().into()),
+                            body: ServerMessageBody::N900LoggedIn {
+                                nick: login.clone(),
+                                address: login.clone(),
+                                account: login.clone(),
+                                message: format!("You are now logged in as {}", login).into(),
+                            },
+                        }
+                        .write_async(writer)
+                        .await?;
+                        ServerMessage {
+                            tags: vec![],
+                            sender: Some(config.server_name.clone().into()),
+                            body: ServerMessageBody::N903SaslSuccess {
+                                nick: login.clone(),
+                                message: "SASL authentication successful".into(),
+                            },
+                        }
+                        .write_async(writer)
+                        .await?;
+                        writer.flush().await?;
+                        Ok(None)
+                    }
+                }
+
+                // TODO handle abortion of authentication
+            }
+            _ => Ok(None),
+        }
+    }
+
+    async fn finalize_auth(
+        &mut self,
+        candidate_user: RegisteredUser,
+        writer: &mut BufWriter<WriteHalf<'_>>,
+        storage: &mut Storage,
+        config: &ServerConfig,
+    ) -> Result<Option<RegisteredUser>> {
+        if self.enabled_capabilities.contains(Capabilities::Sasl)
+            && self.validated_user.as_ref() == Some(&candidate_user.nickname)
+        {
+            Ok(Some(candidate_user))
+        } else {
+            let Some(candidate_password) = &self.pass else {
+                sasl_fail_message(
+                    config.server_name.clone(),
+                    candidate_user.nickname.clone(),
+                    "User credentials was not provided".into(),
+                )
+                .write_async(writer)
+                .await?;
+                writer.flush().await?;
+                return Ok(None);
+            };
+            auth_user(storage, &*candidate_user.nickname, &*candidate_password).await?;
+            Ok(Some(candidate_user))
+        }
+    }
+}
+
 async fn handle_registration<'a>(
     reader: &mut BufReader<ReadHalf<'a>>,
     writer: &mut BufWriter<WriteHalf<'a>>,
@@ -96,14 +359,7 @@ async fn handle_registration<'a>(
 ) -> Result<RegisteredUser> {
     let mut buffer = vec![];
 
-    let mut future_nickname: Option<Str> = None;
+    let mut state = RegistrationState::new();
-    let mut future_username: Option<(Str, Str)> = None;
-    let mut enabled_capabilities = Capabilities::None;
-    let mut cap_negotiation_in_progress = false; // if true, expect `CAP END` to complete registration
-
-    let mut pass: Option<Str> = None;
-    let mut authentication_started = false;
-    let mut validated_user = None;
 
     let user = loop {
         let res = read_irc_message(reader, &mut buffer).await;
@@ -134,218 +390,8 @@ async fn handle_registration<'a>(
             }
         };
         tracing::debug!("Incoming IRC message: {msg:?}");
-        match msg {
+        if let Some(user) = state.handle_msg(msg, writer, storage, config).await? {
-            ClientMessage::Pass { password } => {
+            break Ok(user);
-                pass = Some(password);
-            }
-            ClientMessage::Capability { subcommand } => match subcommand {
-                CapabilitySubcommand::List { code: _ } => {
-                    cap_negotiation_in_progress = true;
-                    ServerMessage {
-                        tags: vec![],
-                        sender: Some(config.server_name.clone().into()),
-                        body: ServerMessageBody::Cap {
-                            target: future_nickname.clone().unwrap_or_else(|| "*".into()),
-                            subcmd: CapSubBody::Ls("sasl=PLAIN".into()),
-                        },
-                    }
-                    .write_async(writer)
-                    .await?;
-                    writer.flush().await?;
-                }
-                CapabilitySubcommand::Req(caps) => {
-                    cap_negotiation_in_progress = true;
-                    let mut acked = vec![];
-                    let mut naked = vec![];
-                    for cap in caps {
-                        if &*cap.name == "sasl" {
-                            if cap.to_disable {
-                                enabled_capabilities &= !Capabilities::Sasl;
-                            } else {
-                                enabled_capabilities |= Capabilities::Sasl;
-                            }
-                            acked.push(cap);
-                        } else {
-                            naked.push(cap);
-                        }
-                    }
-                    let mut ack_body = String::new();
-                    for cap in acked {
-                        if cap.to_disable {
-                            ack_body.push('-');
-                        }
-                        ack_body += &*cap.name;
-                    }
-                    ServerMessage {
-                        tags: vec![],
-                        sender: Some(config.server_name.clone().into()),
-                        body: ServerMessageBody::Cap {
-                            target: future_nickname.clone().unwrap_or_else(|| "*".into()),
-                            subcmd: CapSubBody::Ack(ack_body.into()),
-                        },
-                    }
-                    .write_async(writer)
-                    .await?;
-                    writer.flush().await?;
-                }
-                CapabilitySubcommand::End => {
-                    let Some((ref username, ref realname)) = future_username else {
-                        todo!();
-                    };
-                    let Some(nickname) = future_nickname.clone() else {
-                        todo!();
-                    };
-                    let username = username.clone();
-                    let realname = realname.clone();
-                    let candidate_user = RegisteredUser {
-                        nickname: nickname.clone(),
-                        username,
-                        realname,
-                    };
-                    if enabled_capabilities.contains(Capabilities::Sasl)
-                        && validated_user.as_ref() == Some(&candidate_user.nickname)
-                    {
-                        break Ok(candidate_user);
-                    } else {
-                        let Some(candidate_password) = pass else {
-                            sasl_fail_message(
-                                config.server_name.clone(),
-                                nickname.clone(),
-                                "User credentials was not provided".into(),
-                            )
-                            .write_async(writer)
-                            .await?;
-                            writer.flush().await?;
-                            continue;
-                        };
-                        auth_user(storage, &*candidate_user.nickname, &*candidate_password).await?;
-                        break Ok(candidate_user);
-                    }
-                }
-            },
-            ClientMessage::Nick { nickname } => {
-                if cap_negotiation_in_progress {
-                    future_nickname = Some(nickname);
-                } else if let Some((username, realname)) = future_username.clone() {
-                    let candidate_user = RegisteredUser {
-                        nickname: nickname.clone(),
-                        username,
-                        realname,
-                    };
-                    let Some(candidate_password) = pass else {
-                        sasl_fail_message(
-                            config.server_name.clone(),
-                            nickname.clone(),
-                            "User credentials was not provided".into(),
-                        )
-                        .write_async(writer)
-                        .await?;
-                        writer.flush().await?;
-                        continue;
-                    };
-                    auth_user(storage, &*candidate_user.nickname, &*candidate_password).await?;
-                    break Ok(candidate_user);
-                } else {
-                    future_nickname = Some(nickname);
-                }
-            }
-            ClientMessage::User { username, realname } => {
-                if cap_negotiation_in_progress {
-                    future_username = Some((username, realname));
-                } else if let Some(nickname) = future_nickname.clone() {
-                    let candidate_user = RegisteredUser {
-                        nickname: nickname.clone(),
-                        username,
-                        realname,
-                    };
-                    let Some(candidate_password) = pass else {
-                        sasl_fail_message(
-                            config.server_name.clone(),
-                            nickname.clone(),
-                            "User credentials was not provided".into(),
-                        )
-                        .write_async(writer)
-                        .await?;
-                        writer.flush().await?;
-                        continue;
-                    };
-                    auth_user(storage, &*candidate_user.nickname, &*candidate_password).await?;
-                    break Ok(candidate_user);
-                } else {
-                    future_username = Some((username, realname));
-                }
-            }
-            ClientMessage::Authenticate(body) => {
-                if !authentication_started {
-                    tracing::debug!("Received authentication request");
-                    if &*body == "PLAIN" {
-                        tracing::debug!("Authentication request with method PLAIN");
-                        authentication_started = true;
-                        ServerMessage {
-                            tags: vec![],
-                            sender: Some(config.server_name.clone().into()),
-                            body: ServerMessageBody::Authenticate("+".into()),
-                        }
-                        .write_async(writer)
-                        .await?;
-                        writer.flush().await?;
-                    } else {
-                        if let Some(nickname) = future_nickname.clone() {
-                            sasl_fail_message(
-                                config.server_name.clone(),
-                                nickname.clone(),
-                                "Unsupported mechanism".into(),
-                            )
-                            .write_async(writer)
-                            .await?;
-                            writer.flush().await?;
-                        } else {
-                            break Err(anyhow::Error::msg("Wrong authentication sequence"));
-                        }
-                    }
-                } else {
-                    let body = AuthBody::from_str(body.as_bytes())?;
-                    if let Err(e) = auth_user(storage, &body.login, &body.password).await {
-                        tracing::warn!("Authentication failed: {:?}", e);
-                        if let Some(nickname) = future_nickname.clone() {
-                            sasl_fail_message(config.server_name.clone(), nickname.clone(), "Bad credentials".into())
-                                .write_async(writer)
-                                .await?;
-                            writer.flush().await?;
-                        } else {
-                        }
-                    } else {
-                        let login: Str = body.login.into();
-                        validated_user = Some(login.clone());
-                        ServerMessage {
-                            tags: vec![],
-                            sender: Some(config.server_name.clone().into()),
-                            body: ServerMessageBody::N900LoggedIn {
-                                nick: login.clone(),
-                                address: login.clone(),
-                                account: login.clone(),
-                                message: format!("You are now logged in as {}", login).into(),
-                            },
-                        }
-                        .write_async(writer)
-                        .await?;
-                        ServerMessage {
-                            tags: vec![],
-                            sender: Some(config.server_name.clone().into()),
-                            body: ServerMessageBody::N903SaslSuccess {
-                                nick: login.clone(),
-                                message: "SASL authentication successful".into(),
-                            },
-                        }
-                        .write_async(writer)
-                        .await?;
-                        writer.flush().await?;
-                    }
-                }
-
-                // TODO handle abortion of authentication
-            }
-            _ => {}
         }
         buffer.clear();
     }?;
@@ -362,24 +408,13 @@ fn sasl_fail_message(sender: Str, nick: Str, text: Str) -> ServerMessage {
 }
 
 async fn auth_user(storage: &mut Storage, login: &str, plain_password: &str) -> Result<()> {
-    let stored_user = storage.retrieve_user_by_name(login).await?;
+    let verdict = Authenticator::new(storage).authenticate(login, plain_password).await?;
-
+    // TODO properly map these onto protocol messages
-    let stored_user = match stored_user {
+    match verdict {
-        Some(u) => u,
+        Verdict::Authenticated => Ok(()),
-        None => {
+        Verdict::UserNotFound => Err(anyhow!("no user found")),
-            log::info!("User '{}' not found", login);
+        Verdict::InvalidPassword => Err(anyhow!("incorrect credentials")),
-            return Err(anyhow!("no user found"));
-        }
-    };
-    let Some(expected_password) = stored_user.password else {
-        log::info!("Password not defined for user '{}'", login);
-        return Err(anyhow!("password is not defined"));
-    };
-    if expected_password != plain_password {
-        log::info!("Incorrect password supplied for user '{}'", login);
-        return Err(anyhow!("passwords do not match"));
     }
-    Ok(())
 }
 
 async fn handle_registered_socket<'a>(
@@ -395,7 +430,7 @@ async fn handle_registered_socket<'a>(
     log::info!("Handling registered user: {user:?}");
 
     let player_id = PlayerId::from(user.nickname.clone())?;
-    let mut connection = players.connect_to_player(player_id.clone()).await;
+    let mut connection = players.connect_to_player(&player_id).await;
     let text: Str = format!("Welcome to {} Server", &config.server_name).into();
 
     ServerMessage {
@@ -475,11 +510,18 @@ async fn handle_registered_socket<'a>(
                 buffer.clear();
             },
             update = connection.receiver.recv() => {
-                if let Some(update) = update {
+                match update {
-                    handle_update(&config, &user, &player_id, writer, &rooms, update).await?;
+                    Some(ConnectionMessage::Update(update)) => {
-                } else {
+                        handle_update(&config, &user, &player_id, writer, &rooms, update).await?;
-                    log::warn!("Player is terminated, must terminate the connection");
+                    }
-                    break;
+                    Some(ConnectionMessage::Stop(_)) => {
+                        tracing::debug!("Connection is being terminated");
+                        break;
+                    }
+                    None => {
+                        log::warn!("Player is terminated, must terminate the connection");
+                        break;
+                    }
                 }
             }
         }
@@ -564,9 +606,18 @@ async fn handle_update(
             author_id,
             room_id,
             body,
+            created_at,
         } => {
+            let mut tags = vec![];
+            if user.enabled_capabilities.contains(Capabilities::ServerTime) {
+                let tag = Tag {
+                    key: "time".into(),
+                    value: Some(created_at.to_rfc3339_opts(SecondsFormat::Millis, true).into()),
+                };
+                tags.push(tag);
+            }
             ServerMessage {
-                tags: vec![],
+                tags,
                 sender: Some(author_id.as_inner().clone()),
                 body: ServerMessageBody::PrivateMessage {
                     target: Recipient::Chan(Chan::Global(room_id.as_inner().clone())),
@@ -602,6 +653,32 @@ async fn handle_update(
             .await?;
             writer.flush().await?
         }
+        Updates::NewDialogMessage {
+            sender,
+            receiver,
+            body,
+            created_at,
+        } => {
+            let mut tags = vec![];
+            if user.enabled_capabilities.contains(Capabilities::ServerTime) {
+                let tag = Tag {
+                    key: "time".into(),
+                    value: Some(created_at.to_rfc3339_opts(SecondsFormat::Millis, true).into()),
+                };
+                tags.push(tag);
+            }
+            ServerMessage {
+                tags,
+                sender: Some(sender.as_inner().clone()),
+                body: ServerMessageBody::PrivateMessage {
+                    target: Recipient::Nick(receiver.as_inner().clone()),
+                    body: body.clone(),
+                },
+            }
+            .write_async(writer)
+            .await?;
+            writer.flush().await?
+        }
     }
     Ok(())
 }
@@ -611,6 +688,7 @@ enum HandleResult {
     Leave,
 }
 
+#[tracing::instrument(skip_all, name = "handle_incoming_message")]
 async fn handle_incoming_message(
     buffer: &str,
     config: &ServerConfig,
@@ -649,6 +727,10 @@ async fn handle_incoming_message(
                     let room_id = RoomId::from(chan)?;
                     user_handle.send_message(room_id, body).await?;
                 }
+                Recipient::Nick(nick) => {
+                    let receiver = PlayerId::from(nick)?;
+                    user_handle.send_dialog_message(receiver, body).await?;
+                }
                 _ => log::warn!("Unsupported target type"),
             },
             ClientMessage::Topic { chan, topic } => {
@@ -929,8 +1011,7 @@ impl RunningServer {
 
 pub async fn launch(
     config: ServerConfig,
-    players: PlayerRegistry,
+    core: LavinaCore,
-    rooms: RoomRegistry,
     metrics: MetricsRegistry,
     storage: Storage,
 ) -> Result<RunningServer> {
@@ -971,13 +1052,12 @@ pub async fn launch(
                             }
 
                             let terminator = Terminator::spawn(|termination| {
-                                let players = players.clone();
+                                let core = core.clone();
-                                let rooms = rooms.clone();
                                 let current_connections_clone = current_connections.clone();
                                 let stopped_tx = stopped_tx.clone();
                                 let storage = storage.clone();
                                 async move {
-                                    match handle_socket(config, stream, &socket_addr, players, rooms, termination, storage).await {
+                                    match handle_socket(config, stream, &socket_addr, core, termination, storage).await {
                                         Ok(_) => log::info!("Connection terminated"),
                                         Err(err) => log::warn!("Connection failed: {err}"),
                                     }

crates/projection-irc/tests/lib.rs

@@ -1,15 +1,18 @@
 use std::io::ErrorKind;
-use std::net::SocketAddr;
 use std::time::Duration;
 
 use anyhow::{anyhow, Result};
+use chrono::{DateTime, SecondsFormat};
 use prometheus::Registry as MetricsRegistry;
 use tokio::io::{AsyncReadExt, AsyncWriteExt, BufReader};
 use tokio::net::tcp::{ReadHalf, WriteHalf};
 use tokio::net::TcpStream;
 
+use lavina_core::auth::Authenticator;
+use lavina_core::player::{JoinResult, PlayerId, SendMessageResult};
 use lavina_core::repo::{Storage, StorageConfig};
-use lavina_core::{player::PlayerRegistry, room::RoomRegistry};
+use lavina_core::room::RoomId;
+use lavina_core::LavinaCore;
 use projection_irc::APP_VERSION;
 use projection_irc::{launch, read_irc_message, RunningServer, ServerConfig};
 
@@ -25,7 +28,7 @@ impl<'a> TestScope<'a> {
         let (reader, writer) = stream.split();
         let reader = BufReader::new(reader);
         let buffer = vec![];
-        let timeout = Duration::from_millis(100);
+        let timeout = Duration::from_millis(1000);
         TestScope {
             reader,
             writer,
@@ -49,6 +52,31 @@ impl<'a> TestScope<'a> {
         Ok(())
     }
 
+    async fn expect_that(&mut self, validate: impl FnOnce(&str) -> bool) -> Result<()> {
+        let len = tokio::time::timeout(self.timeout, read_irc_message(&mut self.reader, &mut self.buffer)).await??;
+        let msg = std::str::from_utf8(&self.buffer[..len - 2])?;
+        if !validate(msg) {
+            return Err(anyhow!("unexpected message: {:?}", msg));
+        }
+        self.buffer.clear();
+        Ok(())
+    }
+
+    async fn expect_server_introduction(&mut self, nick: &str) -> Result<()> {
+        self.expect(&format!(":testserver 001 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(":testserver 002 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(":testserver 003 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(
+            ":testserver 004 {nick} testserver {APP_VERSION} r CFILPQbcefgijklmnopqrstvz"
+        ))
+        .await?;
+        self.expect(&format!(
+            ":testserver 005 {nick} CHANTYPES=# :are supported by this server"
+        ))
+        .await?;
+        Ok(())
+    }
+
     async fn expect_eof(&mut self) -> Result<()> {
         let mut buf = [0; 1];
         let len = tokio::time::timeout(self.timeout, self.reader.read(&mut buf)).await??;
@@ -65,13 +93,17 @@ impl<'a> TestScope<'a> {
             Err(_) => Ok(()),
         }
     }
+
+    async fn expect_cap_ls(&mut self) -> Result<()> {
+        self.expect(":testserver CAP * LS :sasl=PLAIN server-time").await?;
+        Ok(())
+    }
 }
 
 struct TestServer {
     metrics: MetricsRegistry,
     storage: Storage,
-    rooms: RoomRegistry,
+    core: LavinaCore,
-    players: PlayerRegistry,
     server: RunningServer,
 }
 impl TestServer {
@@ -86,17 +118,46 @@ impl TestServer {
             db_path: ":memory:".into(),
         })
         .await?;
-        let rooms = RoomRegistry::new(&mut metrics, storage.clone()).unwrap();
+        let core = LavinaCore::new(metrics.clone(), storage.clone()).await?;
-        let players = PlayerRegistry::empty(rooms.clone(), &mut metrics).unwrap();
+        let server = launch(config, core.clone(), metrics.clone(), storage.clone()).await.unwrap();
-        let server = launch(config, players.clone(), rooms.clone(), metrics.clone(), storage.clone()).await.unwrap();
         Ok(TestServer {
             metrics,
             storage,
-            rooms,
+            core,
-            players,
             server,
         })
     }
+
+    async fn reboot(self) -> Result<TestServer> {
+        let config = ServerConfig {
+            listen_on: "127.0.0.1:0".parse().unwrap(),
+            server_name: "testserver".into(),
+        };
+        let TestServer {
+            metrics: _,
+            storage,
+            mut core,
+            server,
+        } = self;
+        server.terminate().await?;
+        core.shutdown().await?;
+        let metrics = MetricsRegistry::new();
+        let core = LavinaCore::new(metrics.clone(), storage.clone()).await?;
+        let server = launch(config, core.clone(), metrics.clone(), storage.clone()).await.unwrap();
+        Ok(TestServer {
+            metrics,
+            storage,
+            core,
+            server,
+        })
+    }
+
+    async fn shutdown(self) -> Result<()> {
+        self.server.terminate().await?;
+        self.core.shutdown().await?;
+        self.storage.close().await?;
+        Ok(())
+    }
 }
 
 #[tokio::test]
@@ -106,7 +167,7 @@ async fn scenario_basic() -> Result<()> {
     // test scenario
 
     server.storage.create_user("tester").await?;
-    server.storage.set_password("tester", "password").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
 
     let mut stream = TcpStream::connect(server.server.addr).await?;
     let mut s = TestScope::new(&mut stream);
@@ -114,18 +175,7 @@ async fn scenario_basic() -> Result<()> {
     s.send("PASS password").await?;
     s.send("NICK tester").await?;
     s.send("USER UserName 0 * :Real Name").await?;
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -135,7 +185,208 @@ async fn scenario_basic() -> Result<()> {
 
     // wrap up
 
-    server.server.terminate().await?;
+    server.shutdown().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_join_and_reboot() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
+
+    let mut stream = TcpStream::connect(server.server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+
+    // Open a connection and join a channel
+
+    s.send("PASS password").await?;
+    s.send("NICK tester").await?;
+    s.send("USER UserName 0 * :Real Name").await?;
+    s.expect_server_introduction("tester").await?;
+    s.expect_nothing().await?;
+    s.send("JOIN #test").await?;
+    s.expect(":tester JOIN #test").await?;
+    s.expect(":testserver 332 tester #test :New room").await?;
+    s.expect(":testserver 353 tester = #test :tester").await?;
+    s.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+    s.send("PRIVMSG #test :Hello").await?;
+    s.send("QUIT :Leaving").await?;
+    s.expect(":testserver ERROR :Leaving the server").await?;
+    s.expect_eof().await?;
+    stream.shutdown().await?;
+
+    // Open a new connection and expect to be force-joined to the channel
+
+    let mut stream = TcpStream::connect(server.server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+
+    async fn test(s: &mut TestScope<'_>) -> Result<()> {
+        s.send("PASS password").await?;
+        s.send("NICK tester").await?;
+        s.send("USER UserName 0 * :Real Name").await?;
+        s.expect_server_introduction("tester").await?;
+        s.expect(":tester JOIN #test").await?;
+        s.expect(":testserver 332 tester #test :New room").await?;
+        s.expect(":testserver 353 tester = #test :tester").await?;
+        s.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+        s.send("QUIT :Leaving").await?;
+        s.expect(":testserver ERROR :Leaving the server").await?;
+        s.expect_eof().await?;
+        Ok(())
+    }
+    test(&mut s).await?;
+    stream.shutdown().await?;
+
+    // Reboot the server
+
+    let server = server.reboot().await?;
+
+    // Open a new connection and expect to be force-joined to the channel
+
+    let mut stream = TcpStream::connect(server.server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+
+    test(&mut s).await?;
+    stream.shutdown().await?;
+
+    // wrap up
+
+    server.shutdown().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_force_join_msg() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
+
+    let mut stream1 = TcpStream::connect(server.server.addr).await?;
+    let mut s1 = TestScope::new(&mut stream1);
+    let mut stream2 = TcpStream::connect(server.server.addr).await?;
+    let mut s2 = TestScope::new(&mut stream2);
+
+    s1.send("PASS password").await?;
+    s1.send("NICK tester").await?;
+    s1.send("USER UserName 0 * :Real Name").await?;
+    s1.expect_server_introduction("tester").await?;
+    s1.expect_nothing().await?;
+
+    s2.send("PASS password").await?;
+    s2.send("NICK tester").await?;
+    s2.send("USER UserName 0 * :Real Name").await?;
+    s2.expect_server_introduction("tester").await?;
+    s2.expect_nothing().await?;
+
+    // We join the channel from the first connection
+    s1.send("JOIN #test").await?;
+    s1.expect(":tester JOIN #test").await?;
+    s1.expect(":testserver 332 tester #test :New room").await?;
+    s1.expect(":testserver 353 tester = #test :tester").await?;
+    s1.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+
+    // And the second connection should receive the JOIN message (forced JOIN)
+    s2.expect(":tester JOIN #test").await?;
+    s2.expect(":testserver 332 tester #test :New room").await?;
+    s2.expect(":testserver 353 tester = #test :tester").await?;
+    s2.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+
+    // We send a message to the channel from the second connection
+    s2.send("PRIVMSG #test :Hello").await?;
+    // We should not receive an acknowledgement from the server
+    s2.expect_nothing().await?;
+    // But we should receive this message from the first connection
+    s1.expect(":tester PRIVMSG #test :Hello").await?;
+
+    s1.send("QUIT :Leaving").await?;
+    s1.expect(":testserver ERROR :Leaving the server").await?;
+    s1.expect_eof().await?;
+
+    // Closing a connection does not kick you from the channel on a different connection
+    s2.expect_nothing().await?;
+
+    s2.send("QUIT :Leaving").await?;
+    s2.expect(":testserver ERROR :Leaving the server").await?;
+    s2.expect_eof().await?;
+
+    stream1.shutdown().await?;
+    stream2.shutdown().await?;
+
+    // wrap up
+
+    server.shutdown().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_two_users() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester1").await?;
+    Authenticator::new(&server.storage).set_password("tester1", "password").await?;
+    server.storage.create_user("tester2").await?;
+    Authenticator::new(&server.storage).set_password("tester2", "password").await?;
+
+    let mut stream1 = TcpStream::connect(server.server.addr).await?;
+    let mut s1 = TestScope::new(&mut stream1);
+    let mut stream2 = TcpStream::connect(server.server.addr).await?;
+    let mut s2 = TestScope::new(&mut stream2);
+
+    s1.send("PASS password").await?;
+    s1.send("NICK tester1").await?;
+    s1.send("USER UserName 0 * :Real Name").await?;
+    s1.expect_server_introduction("tester1").await?;
+    s1.expect_nothing().await?;
+
+    s2.send("PASS password").await?;
+    s2.send("NICK tester2").await?;
+    s2.send("USER UserName 0 * :Real Name").await?;
+    s2.expect_server_introduction("tester2").await?;
+    s2.expect_nothing().await?;
+
+    // Join the channel from the first user
+    s1.send("JOIN #test").await?;
+    s1.expect(":tester1 JOIN #test").await?;
+    s1.expect(":testserver 332 tester1 #test :New room").await?;
+    s1.expect(":testserver 353 tester1 = #test :tester1").await?;
+    s1.expect(":testserver 366 tester1 #test :End of /NAMES list").await?;
+    // Then join the channel from the second user
+    s2.send("JOIN #test").await?;
+    s2.expect(":tester2 JOIN #test").await?;
+    s2.expect(":testserver 332 tester2 #test :New room").await?;
+    s2.expect_that(|msg| {
+        msg == ":testserver 353 tester2 = #test :tester1 tester2"
+            || msg == ":testserver 353 tester2 = #test :tester2 tester1"
+    })
+    .await?;
+    s2.expect(":testserver 366 tester2 #test :End of /NAMES list").await?;
+    // The first user should receive the JOIN message from the second user
+    s1.expect(":tester2 JOIN #test").await?;
+    s1.expect_nothing().await?;
+    s2.expect_nothing().await?;
+    // Send a message from the second user
+    s2.send("PRIVMSG #test :Hello").await?;
+    // The first user should receive the message
+    s1.expect(":tester2 PRIVMSG #test :Hello").await?;
+    // Leave the channel from the first user
+    s1.send("PART #test").await?;
+    s1.expect(":tester1 PART #test").await?;
+    // The second user should receive the PART message
+    s2.expect(":tester1 PART #test").await?;
+
+    stream1.shutdown().await?;
+    stream2.shutdown().await?;
+
+    server.shutdown().await?;
     Ok(())
 }
 
@@ -150,7 +401,7 @@ async fn scenario_cap_full_negotiation() -> Result<()> {
     // test scenario
 
     server.storage.create_user("tester").await?;
-    server.storage.set_password("tester", "password").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
 
     let mut stream = TcpStream::connect(server.server.addr).await?;
     let mut s = TestScope::new(&mut stream);
@@ -158,7 +409,7 @@ async fn scenario_cap_full_negotiation() -> Result<()> {
     s.send("CAP LS 302").await?;
     s.send("NICK tester").await?;
     s.send("USER UserName 0 * :Real Name").await?;
-    s.expect(":testserver CAP * LS :sasl=PLAIN").await?;
+    s.expect_cap_ls().await?;
     s.send("CAP REQ :sasl").await?;
     s.expect(":testserver CAP tester ACK :sasl").await?;
     s.send("AUTHENTICATE PLAIN").await?;
@@ -169,18 +420,7 @@ async fn scenario_cap_full_negotiation() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -190,7 +430,46 @@ async fn scenario_cap_full_negotiation() -> Result<()> {
 
     // wrap up
 
-    server.server.terminate().await?;
+    server.shutdown().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_cap_full_negotiation_nick_last() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
+
+    let mut stream = TcpStream::connect(server.server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+
+    s.send("CAP LS 302").await?;
+    s.expect_cap_ls().await?;
+    s.send("CAP REQ :sasl").await?;
+    s.expect(":testserver CAP * ACK :sasl").await?;
+    s.send("AUTHENTICATE PLAIN").await?;
+    s.expect(":testserver AUTHENTICATE +").await?;
+    s.send("AUTHENTICATE dGVzdGVyAHRlc3RlcgBwYXNzd29yZA==").await?; // base64-encoded 'tester\x00tester\x00password'
+    s.expect(":testserver 900 tester tester tester :You are now logged in as tester").await?;
+    s.expect(":testserver 903 tester :SASL authentication successful").await?;
+    s.send("CAP END").await?;
+    s.send("USER UserName 0 * :Real Name").await?;
+    s.send("NICK tester").await?;
+
+    s.expect_server_introduction("tester").await?;
+    s.expect_nothing().await?;
+    s.send("QUIT :Leaving").await?;
+    s.expect(":testserver ERROR :Leaving the server").await?;
+    s.expect_eof().await?;
+
+    stream.shutdown().await?;
+
+    // wrap up
+
+    server.shutdown().await?;
     Ok(())
 }
 
@@ -201,7 +480,7 @@ async fn scenario_cap_short_negotiation() -> Result<()> {
     // test scenario
 
     server.storage.create_user("tester").await?;
-    server.storage.set_password("tester", "password").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
 
     let mut stream = TcpStream::connect(server.server.addr).await?;
     let mut s = TestScope::new(&mut stream);
@@ -218,18 +497,7 @@ async fn scenario_cap_short_negotiation() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -239,7 +507,7 @@ async fn scenario_cap_short_negotiation() -> Result<()> {
 
     // wrap up
 
-    server.server.terminate().await?;
+    server.shutdown().await?;
     Ok(())
 }
 
@@ -250,7 +518,7 @@ async fn scenario_cap_sasl_fail() -> Result<()> {
     // test scenario
 
     server.storage.create_user("tester").await?;
-    server.storage.set_password("tester", "password").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
 
     let mut stream = TcpStream::connect(server.server.addr).await?;
     let mut s = TestScope::new(&mut stream);
@@ -258,7 +526,7 @@ async fn scenario_cap_sasl_fail() -> Result<()> {
     s.send("CAP LS 302").await?;
     s.send("NICK tester").await?;
     s.send("USER UserName 0 * :Real Name").await?;
-    s.expect(":testserver CAP * LS :sasl=PLAIN").await?;
+    s.expect_cap_ls().await?;
     s.send("CAP REQ :sasl").await?;
     s.expect(":testserver CAP tester ACK :sasl").await?;
     s.send("AUTHENTICATE SHA256").await?;
@@ -273,18 +541,7 @@ async fn scenario_cap_sasl_fail() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -294,19 +551,18 @@ async fn scenario_cap_sasl_fail() -> Result<()> {
 
     // wrap up
 
-    server.server.terminate().await?;
+    server.shutdown().await?;
     Ok(())
 }
 
 #[tokio::test]
 async fn terminate_socket_scenario() -> Result<()> {
     let mut server = TestServer::start().await?;
-    let address: SocketAddr = ("127.0.0.1:0".parse().unwrap());
 
     // test scenario
 
     server.storage.create_user("tester").await?;
-    server.storage.set_password("tester", "password").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
 
     let mut stream = TcpStream::connect(server.server.addr).await?;
     let mut s = TestScope::new(&mut stream);
@@ -318,8 +574,142 @@ async fn terminate_socket_scenario() -> Result<()> {
     s.send("AUTHENTICATE PLAIN").await?;
     s.expect(":testserver AUTHENTICATE +").await?;
 
-    server.server.terminate().await?;
+    server.shutdown().await?;
     assert_eq!(stream.read_u8().await.unwrap_err().kind(), ErrorKind::UnexpectedEof);
 
     Ok(())
 }
+
+#[tokio::test]
+async fn server_time_capability() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
+
+    let mut stream = TcpStream::connect(server.server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+
+    s.send("CAP LS 302").await?;
+    s.send("NICK tester").await?;
+    s.send("USER UserName 0 * :Real Name").await?;
+    s.expect_cap_ls().await?;
+    s.send("CAP REQ :sasl server-time").await?;
+    s.expect(":testserver CAP tester ACK :sasl server-time").await?;
+    s.send("AUTHENTICATE PLAIN").await?;
+    s.expect(":testserver AUTHENTICATE +").await?;
+    s.send("AUTHENTICATE dGVzdGVyAHRlc3RlcgBwYXNzd29yZA==").await?; // base64-encoded 'tester\x00tester\x00password'
+    s.expect(":testserver 900 tester tester tester :You are now logged in as tester").await?;
+    s.expect(":testserver 903 tester :SASL authentication successful").await?;
+    s.send("CAP END").await?;
+    s.expect_server_introduction("tester").await?;
+    s.expect_nothing().await?;
+    s.send("JOIN #test").await?;
+    s.expect(":tester JOIN #test").await?;
+    s.expect(":testserver 332 tester #test :New room").await?;
+    s.expect(":testserver 353 tester = #test :tester").await?;
+    s.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+
+    server.storage.create_user("some_guy").await?;
+    let mut conn = server.core.players.connect_to_player(&PlayerId::from("some_guy").unwrap()).await;
+    let res = conn.join_room(RoomId::from("test").unwrap()).await?;
+    let JoinResult::Success(_) = res else {
+        panic!("Failed to join room");
+    };
+
+    s.expect(":some_guy JOIN #test").await?;
+
+    let SendMessageResult::Success(res) = conn.send_message(RoomId::from("test").unwrap(), "Hello".into()).await?
+    else {
+        panic!("Failed to send message");
+    };
+    s.expect(&format!(
+        "@time={} :some_guy PRIVMSG #test :Hello",
+        res.to_rfc3339_opts(SecondsFormat::Millis, true)
+    ))
+    .await?;
+
+    // formatting check
+    assert_eq!(
+        DateTime::parse_from_rfc3339(&"2024-01-01T10:00:32.123Z").unwrap().to_rfc3339_opts(SecondsFormat::Millis, true),
+        "2024-01-01T10:00:32.123Z"
+    );
+
+    s.send("QUIT :Leaving").await?;
+    s.expect(":testserver ERROR :Leaving the server").await?;
+    s.expect_eof().await?;
+
+    stream.shutdown().await?;
+
+    // wrap up
+
+    server.shutdown().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_two_players_dialog() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester1").await?;
+    server.storage.set_password("tester1", "password").await?;
+    server.storage.create_user("tester2").await?;
+    server.storage.set_password("tester2", "password").await?;
+
+    let mut stream1 = TcpStream::connect(server.server.addr).await?;
+    let mut s1 = TestScope::new(&mut stream1);
+
+    let mut stream2 = TcpStream::connect(server.server.addr).await?;
+    let mut s2 = TestScope::new(&mut stream2);
+
+    s1.send("CAP LS 302").await?;
+    s1.send("NICK tester1").await?;
+    s1.send("USER UserName 0 * :Real Name").await?;
+    s1.expect_cap_ls().await?;
+    s1.send("CAP REQ :sasl").await?;
+    s1.expect(":testserver CAP tester1 ACK :sasl").await?;
+    s1.send("AUTHENTICATE PLAIN").await?;
+    s1.expect(":testserver AUTHENTICATE +").await?;
+    s1.send("AUTHENTICATE dGVzdGVyMQB0ZXN0ZXIxAHBhc3N3b3Jk").await?; // base64-encoded 'tester1\x00tester1\x00password'
+    s1.expect(":testserver 900 tester1 tester1 tester1 :You are now logged in as tester1").await?;
+    s1.expect(":testserver 903 tester1 :SASL authentication successful").await?;
+    s1.send("CAP END").await?;
+    s1.expect_server_introduction("tester1").await?;
+    s1.expect_nothing().await?;
+
+    s2.send("CAP LS 302").await?;
+    s2.send("NICK tester2").await?;
+    s2.send("USER UserName 0 * :Real Name").await?;
+    s2.expect_cap_ls().await?;
+    s2.send("CAP REQ :sasl").await?;
+    s2.expect(":testserver CAP tester2 ACK :sasl").await?;
+    s2.send("AUTHENTICATE PLAIN").await?;
+    s2.expect(":testserver AUTHENTICATE +").await?;
+    s2.send("AUTHENTICATE dGVzdGVyMgB0ZXN0ZXIyAHBhc3N3b3Jk").await?; // base64-encoded 'tester2\x00tester2\x00password'
+    s2.expect(":testserver 900 tester2 tester2 tester2 :You are now logged in as tester2").await?;
+    s2.expect(":testserver 903 tester2 :SASL authentication successful").await?;
+    s2.send("CAP END").await?;
+    s2.expect_server_introduction("tester2").await?;
+    s2.expect_nothing().await?;
+
+    s1.send("PRIVMSG tester2 :Henlo! How are you?").await?;
+    s1.expect_nothing().await?;
+    s2.expect(":tester1 PRIVMSG tester2 :Henlo! How are you?").await?;
+    s2.expect_nothing().await?;
+
+    s2.send("PRIVMSG tester1 good").await?;
+    s2.expect_nothing().await?;
+    s1.expect(":tester2 PRIVMSG tester1 :good").await?;
+    s1.expect_nothing().await?;
+
+    stream1.shutdown().await?;
+    stream2.shutdown().await?;
+
+    server.shutdown().await?;
+
+    Ok(())
+}

crates/projection-xmpp/src/iq.rs

@@ -2,9 +2,9 @@
 
 use quick_xml::events::Event;
 
-use lavina_core::room::RoomRegistry;
+use lavina_core::room::{RoomId, RoomRegistry};
-use proto_xmpp::bind::{BindResponse, Jid, Name, Resource, Server};
+use proto_xmpp::bind::{BindResponse, Jid, Name, Server};
-use proto_xmpp::client::{Iq, IqType};
+use proto_xmpp::client::{Iq, IqError, IqErrorType, IqType};
 use proto_xmpp::disco::{Feature, Identity, InfoQuery, Item, ItemQuery};
 use proto_xmpp::roster::RosterQuery;
 use proto_xmpp::session::Session;
@@ -17,16 +17,16 @@ use proto_xmpp::xml::ToXml;
 impl<'a> XmppConnection<'a> {
     pub async fn handle_iq(&self, output: &mut Vec<Event<'static>>, iq: Iq<IqClientBody>) {
         match iq.body {
-            IqClientBody::Bind(b) => {
+            IqClientBody::Bind(_) => {
                 let req = Iq {
                     from: None,
                     id: iq.id,
                     to: None,
                     r#type: IqType::Result,
                     body: BindResponse(Jid {
-                        name: Some(Name("darova".into())),
+                        name: Some(self.user.xmpp_name.clone()),
-                        server: Server("localhost".into()),
+                        server: Server(self.hostname.clone()),
-                        resource: Some(Resource("kek".into())),
+                        resource: Some(self.user.xmpp_resource.clone()),
                     }),
                 };
                 req.serialize(output);
@@ -52,18 +52,32 @@ impl<'a> XmppConnection<'a> {
                 req.serialize(output);
             }
             IqClientBody::DiscoInfo(info) => {
-                let response = disco_info(iq.to.as_deref(), &info);
+                let response = self.disco_info(iq.to.as_ref(), &info).await;
-                let req = Iq {
+                match response {
-                    from: iq.to,
+                    Ok(response) => {
-                    id: iq.id,
+                        let req = Iq {
-                    to: None,
+                            from: iq.to,
-                    r#type: IqType::Result,
+                            id: iq.id,
-                    body: response,
+                            to: None,
-                };
+                            r#type: IqType::Result,
-                req.serialize(output);
+                            body: response,
+                        };
+                        req.serialize(output);
+                    }
+                    Err(response) => {
+                        let req = Iq {
+                            from: iq.to,
+                            id: iq.id,
+                            to: None,
+                            r#type: IqType::Error,
+                            body: response,
+                        };
+                        req.serialize(output);
+                    }
+                }
             }
             IqClientBody::DiscoItem(item) => {
-                let response = disco_items(iq.to.as_deref(), &item, self.rooms).await;
+                let response = self.disco_items(iq.to.as_ref(), &item, self.rooms).await;
                 let req = Iq {
                     from: iq.to,
                     id: iq.id,
@@ -79,84 +93,131 @@ impl<'a> XmppConnection<'a> {
                     id: iq.id,
                     to: None,
                     r#type: IqType::Error,
-                    body: (),
+                    body: IqError {
+                        r#type: IqErrorType::Cancel,
+                    },
                 };
                 req.serialize(output);
             }
         }
     }
-}
 
-fn disco_info(to: Option<&str>, req: &InfoQuery) -> InfoQuery {
+    async fn disco_info(&self, to: Option<&Jid>, req: &InfoQuery) -> Result<InfoQuery, IqError> {
-    let identity;
+        let identity;
-    let feature;
+        let feature;
-    match to {
+
-        Some("localhost") => {
+        match to {
-            identity = vec![Identity {
+            Some(Jid {
-                category: "server".into(),
                 name: None,
-                r#type: "im".into(),
+                server,
-            }];
+                resource: None,
-            feature = vec![
+            }) if server.0 == self.hostname => {
-                Feature::new("http://jabber.org/protocol/disco#info"),
+                identity = vec![Identity {
-                Feature::new("http://jabber.org/protocol/disco#items"),
+                    category: "server".into(),
-                Feature::new("iq"),
-                Feature::new("presence"),
-            ]
-        }
-        Some("rooms.localhost") => {
-            identity = vec![Identity {
-                category: "conference".into(),
-                name: Some("Chat rooms".into()),
-                r#type: "text".into(),
-            }];
-            feature = vec![
-                Feature::new("http://jabber.org/protocol/disco#info"),
-                Feature::new("http://jabber.org/protocol/disco#items"),
-                Feature::new("http://jabber.org/protocol/muc"),
-            ]
-        }
-        _ => {
-            identity = vec![];
-            feature = vec![];
-        }
-    };
-    InfoQuery {
-        node: None,
-        identity,
-        feature,
-    }
-}
-
-async fn disco_items(to: Option<&str>, req: &ItemQuery, rooms: &RoomRegistry) -> ItemQuery {
-    let item = match to {
-        Some("localhost") => {
-            vec![Item {
-                jid: Jid {
                     name: None,
-                    server: Server("rooms.localhost".into()),
+                    r#type: "im".into(),
-                    resource: None,
+                }];
-                },
+                feature = vec![
+                    Feature::new("http://jabber.org/protocol/disco#info"),
+                    Feature::new("http://jabber.org/protocol/disco#items"),
+                    Feature::new("iq"),
+                    Feature::new("presence"),
+                ]
+            }
+            Some(Jid {
                 name: None,
-                node: None,
+                server,
-            }]
+                resource: None,
-        }
+            }) if server.0 == self.hostname_rooms => {
-        Some("rooms.localhost") => {
+                identity = vec![Identity {
-            let room_list = rooms.get_all_rooms().await;
+                    category: "conference".into(),
-            room_list
+                    name: Some("Chat rooms".into()),
-                .into_iter()
+                    r#type: "text".into(),
-                .map(|room_info| Item {
+                }];
+                feature = vec![
+                    Feature::new("http://jabber.org/protocol/disco#info"),
+                    Feature::new("http://jabber.org/protocol/disco#items"),
+                    Feature::new("http://jabber.org/protocol/muc"),
+                ]
+            }
+            Some(Jid {
+                name: Some(room_name),
+                server,
+                resource: None,
+            }) if server.0 == self.hostname_rooms => {
+                let room_id = RoomId::from(room_name.0.clone()).unwrap();
+                let Some(_) = self.rooms.get_room(&room_id).await else {
+                    // TODO should return item-not-found
+                    // example:
+                    // <error type="cancel">
+                    // <item-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
+                    // <text xmlns="urn:ietf:params:xml:ns:xmpp-stanzas" xml:lang="en">Conference room does not exist</text>
+                    // </error>
+                    return Err(IqError {
+                        r#type: IqErrorType::Cancel,
+                    });
+                };
+                identity = vec![Identity {
+                    category: "conference".into(),
+                    name: Some(room_id.into_inner().to_string()),
+                    r#type: "text".into(),
+                }];
+                feature = vec![
+                    Feature::new("http://jabber.org/protocol/disco#info"),
+                    Feature::new("http://jabber.org/protocol/disco#items"),
+                    Feature::new("http://jabber.org/protocol/muc"),
+                ]
+            }
+            _ => {
+                identity = vec![];
+                feature = vec![];
+            }
+        };
+        Ok(InfoQuery {
+            node: None,
+            identity,
+            feature,
+        })
+    }
+
+    async fn disco_items(&self, to: Option<&Jid>, req: &ItemQuery, rooms: &RoomRegistry) -> ItemQuery {
+        let item = match to {
+            Some(Jid {
+                name: None,
+                server,
+                resource: None,
+            }) if server.0 == self.hostname => {
+                vec![Item {
                     jid: Jid {
-                        name: Some(Name(room_info.id.into_inner())),
+                        name: None,
-                        server: Server("rooms.localhost".into()),
+                        server: Server(self.hostname_rooms.clone()),
                         resource: None,
                     },
                     name: None,
                     node: None,
-                })
+                }]
-                .collect()
+            }
-        }
+            Some(Jid {
-        _ => vec![],
+                name: None,
-    };
+                server,
-    ItemQuery { item }
+                resource: None,
+            }) if server.0 == self.hostname_rooms => {
+                let room_list = rooms.get_all_rooms().await;
+                room_list
+                    .into_iter()
+                    .map(|room_info| Item {
+                        jid: Jid {
+                            name: Some(Name(room_info.id.into_inner())),
+                            server: Server(self.hostname_rooms.clone()),
+                            resource: None,
+                        },
+                        name: None,
+                        node: None,
+                    })
+                    .collect()
+            }
+            _ => vec![],
+        };
+        ItemQuery { item }
+    }
 }

crates/projection-xmpp/src/lib.rs

@@ -22,13 +22,16 @@ use tokio::sync::mpsc::channel;
 use tokio_rustls::rustls::{Certificate, PrivateKey};
 use tokio_rustls::TlsAcceptor;
 
-use lavina_core::player::{PlayerConnection, PlayerId, PlayerRegistry};
+use lavina_core::auth::{Authenticator, Verdict};
+use lavina_core::player::{ConnectionMessage, PlayerConnection, PlayerId, PlayerRegistry, StopReason};
 use lavina_core::prelude::*;
 use lavina_core::repo::Storage;
 use lavina_core::room::RoomRegistry;
 use lavina_core::terminator::Terminator;
+use lavina_core::LavinaCore;
 use proto_xmpp::bind::{Name, Resource};
 use proto_xmpp::stream::*;
+use proto_xmpp::streamerror::{StreamError, StreamErrorKind};
 use proto_xmpp::xml::{Continuation, FromXml, Parser, ToXml};
 use sasl::AuthBody;
 
@@ -44,6 +47,7 @@ pub struct ServerConfig {
     pub listen_on: SocketAddr,
     pub cert: PathBuf,
     pub key: PathBuf,
+    pub hostname: Str,
 }
 
 struct LoadedConfig {
@@ -52,9 +56,17 @@ struct LoadedConfig {
 }
 
 struct Authenticated {
+    /// Identifier of the authenticated player.
+    ///
+    /// Used when communicating with lavina-core on behalf of the player.
     player_id: PlayerId,
+    /// The user's XMPP name.
+    ///
+    /// Used in `to` and `from` fields of XMPP messages.
     xmpp_name: Name,
+    /// The resource given to this user by the server.
     xmpp_resource: Resource,
+    /// The resource used by this user when joining MUCs.
     xmpp_muc_name: Resource,
 }
 
@@ -71,8 +83,7 @@ impl RunningServer {
 
 pub async fn launch(
     config: ServerConfig,
-    players: PlayerRegistry,
+    core: LavinaCore,
-    rooms: RoomRegistry,
     metrics: MetricsRegistry,
     storage: Storage,
 ) -> Result<RunningServer> {
@@ -114,14 +125,14 @@ pub async fn launch(
                                 // TODO kill the older connection and restart it
                                 continue;
                             }
-                            let players = players.clone();
+                            let core = core.clone();
-                            let rooms = rooms.clone();
                             let storage = storage.clone();
+                            let hostname = config.hostname.clone();
                             let terminator = Terminator::spawn(|termination| {
                                 let stopped_tx = stopped_tx.clone();
                                 let loaded_config = loaded_config.clone();
                                 async move {
-                                    match handle_socket(loaded_config, stream, &socket_addr, players, rooms, storage, termination).await {
+                                    match handle_socket(loaded_config, stream, &socket_addr, core, storage, hostname, termination).await {
                                         Ok(_) => log::info!("Connection terminated"),
                                         Err(err) => log::warn!("Connection failed: {err}"),
                                     }
@@ -156,12 +167,12 @@ pub async fn launch(
 }
 
 async fn handle_socket(
-    config: Arc<LoadedConfig>,
+    cert_config: Arc<LoadedConfig>,
     mut stream: TcpStream,
     socket_addr: &SocketAddr,
-    mut players: PlayerRegistry,
+    mut core: LavinaCore,
-    rooms: RoomRegistry,
     mut storage: Storage,
+    hostname: Str,
     termination: Deferred<()>, // TODO use it to stop the connection gracefully
 ) -> Result<()> {
     log::info!("Received an XMPP connection from {socket_addr}");
@@ -170,12 +181,12 @@ async fn handle_socket(
     let mut buf_reader = BufReader::new(reader);
     let mut buf_writer = BufWriter::new(writer);
 
-    socket_force_tls(&mut buf_reader, &mut buf_writer, &mut reader_buf).await?;
+    socket_force_tls(&mut buf_reader, &mut buf_writer, &mut reader_buf, &hostname).await?;
 
     let mut config = tokio_rustls::rustls::ServerConfig::builder()
         .with_safe_defaults()
         .with_no_client_auth()
-        .with_single_cert(vec![config.cert.clone()], config.key.clone())?;
+        .with_single_cert(vec![cert_config.cert.clone()], cert_config.key.clone())?;
     config.key_log = Arc::new(tokio_rustls::rustls::KeyLogFile::new());
 
     log::debug!("Accepting TLS connection...");
@@ -185,7 +196,7 @@ async fn handle_socket(
 
     let (a, b) = tokio::io::split(new_stream);
     let mut xml_reader = NsReader::from_reader(BufReader::new(a));
-    let mut xml_writer = Writer::new(b);
+    let mut xml_writer = Writer::new(BufWriter::new(b));
 
     pin!(termination);
     select! {
@@ -194,17 +205,18 @@ async fn handle_socket(
             log::info!("Socket handling was terminated");
             return Ok(())
         },
-        authenticated = socket_auth(&mut xml_reader, &mut xml_writer, &mut reader_buf, &mut storage) => {
+        authenticated = socket_auth(&mut xml_reader, &mut xml_writer, &mut reader_buf, &mut storage, &hostname) => {
             match authenticated {
                 Ok(authenticated) => {
-                    let mut connection = players.connect_to_player(authenticated.player_id.clone()).await;
+                    let mut connection = core.players.connect_to_player(&authenticated.player_id).await;
                     socket_final(
                         &mut xml_reader,
                         &mut xml_writer,
                         &mut reader_buf,
                         &authenticated,
                         &mut connection,
-                        &rooms,
+                        &core.rooms,
+                        &hostname,
                     )
                     .await?;
                 },
@@ -216,7 +228,7 @@ async fn handle_socket(
     }
 
     let a = xml_reader.into_inner().into_inner();
-    let b = xml_writer.into_inner();
+    let b = xml_writer.into_inner().into_inner();
     a.unsplit(b).shutdown().await?;
     Ok(())
 }
@@ -225,17 +237,18 @@ async fn socket_force_tls(
     reader: &mut (impl AsyncBufRead + Unpin),
     writer: &mut (impl AsyncWrite + Unpin),
     reader_buf: &mut Vec<u8>,
+    hostname: &Str,
 ) -> Result<()> {
     use proto_xmpp::tls::*;
     let xml_reader = &mut NsReader::from_reader(reader);
     let xml_writer = &mut Writer::new(writer);
-    read_xml_header(xml_reader, reader_buf).await?;
+    // TODO validate the server hostname received in the stream start
     let _ = ClientStreamStart::parse(xml_reader, reader_buf).await?;
 
     let event = Event::Decl(BytesDecl::new("1.0", None, None));
     xml_writer.write_event_async(event).await?;
     let msg = ServerStreamStart {
-        from: "localhost".into(),
+        from: hostname.to_string(),
         lang: "en".into(),
         id: uuid::Uuid::new_v4().to_string(),
         version: "1.0".into(),
@@ -260,13 +273,14 @@ async fn socket_auth(
     xml_writer: &mut Writer<(impl AsyncWrite + Unpin)>,
     reader_buf: &mut Vec<u8>,
     storage: &mut Storage,
+    hostname: &Str,
 ) -> Result<Authenticated> {
-    read_xml_header(xml_reader, reader_buf).await?;
+    // TODO validate the server hostname received in the stream start
     let _ = ClientStreamStart::parse(xml_reader, reader_buf).await?;
 
     xml_writer.write_event_async(Event::Decl(BytesDecl::new("1.0", None, None))).await?;
     ServerStreamStart {
-        from: "localhost".into(),
+        from: hostname.to_string(),
         lang: "en".into(),
         id: uuid::Uuid::new_v4().to_string(),
         version: "1.0".into(),
@@ -283,36 +297,28 @@ async fn socket_auth(
     xml_writer.get_mut().flush().await?;
 
     let auth: proto_xmpp::sasl::Auth = proto_xmpp::sasl::Auth::parse(xml_reader, reader_buf).await?;
-    proto_xmpp::sasl::Success.write_xml(xml_writer).await?;
 
     match AuthBody::from_str(&auth.body) {
         Ok(logopass) => {
             let name = &logopass.login;
-            let stored_user = storage.retrieve_user_by_name(name).await?;
+            let verdict = Authenticator::new(storage).authenticate(name, &logopass.password).await?;
-
+            match verdict {
-            let stored_user = match stored_user {
+                Verdict::Authenticated => {
-                Some(u) => u,
+                    proto_xmpp::sasl::Success.write_xml(xml_writer).await?;
-                None => {
+                    xml_writer.get_mut().flush().await?;
-                    log::info!("User '{}' not found", name);
+                }
-                    return Err(fail("no user found"));
+                Verdict::UserNotFound | Verdict::InvalidPassword => {
+                    proto_xmpp::sasl::Failure.write_xml(xml_writer).await?;
+                    xml_writer.get_mut().flush().await?;
+                    return Err(anyhow!("incorrect credentials"));
                 }
-            };
-            // TODO return proper XML errors to the client
-
-            if stored_user.password.is_none() {
-                log::info!("Password not defined for user '{}'", name);
-                return Err(fail("password is not defined"));
             }
-            if stored_user.password.as_deref() != Some(&logopass.password) {
+            let name: Str = name.as_str().into();
-                log::info!("Incorrect password supplied for user '{}'", name);
-                return Err(fail("passwords do not match"));
-            }
-
             Ok(Authenticated {
-                player_id: PlayerId::from(name.as_str())?,
+                player_id: PlayerId::from(name.clone())?,
-                xmpp_name: Name(name.to_string().into()),
+                xmpp_name: Name(name.clone()),
-                xmpp_resource: Resource(name.to_string().into()),
+                xmpp_resource: Resource(name.clone()),
-                xmpp_muc_name: Resource(name.to_string().into()),
+                xmpp_muc_name: Resource(name.clone()),
             })
         }
         Err(e) => return Err(e),
@@ -326,13 +332,14 @@ async fn socket_final(
     authenticated: &Authenticated,
     user_handle: &mut PlayerConnection,
     rooms: &RoomRegistry,
+    hostname: &Str,
 ) -> Result<()> {
-    read_xml_header(xml_reader, reader_buf).await?;
+    // TODO validate the server hostname received in the stream start
     let _ = ClientStreamStart::parse(xml_reader, reader_buf).await?;
 
     xml_writer.write_event_async(Event::Decl(BytesDecl::new("1.0", None, None))).await?;
     ServerStreamStart {
-        from: "localhost".into(),
+        from: hostname.to_string(),
         lang: "en".into(),
         id: uuid::Uuid::new_v4().to_string(),
         version: "1.0".into(),
@@ -358,13 +365,15 @@ async fn socket_final(
             user: authenticated,
             user_handle,
             rooms,
+            hostname: hostname.clone(),
+            hostname_rooms: format!("rooms.{}", hostname).into(),
         };
         let should_recreate_xml_future = select! {
             biased;
             res = &mut next_xml_event => 's: {
                 let (ns, event) = res?;
                 if let Event::Text(ref e) = event {
-                    if e.iter().all(|x| *x == 0xA) {
+                    if e.iter().all(|x| *x == b'\n' || *x == b' ') {
                         break 's true;
                     }
                 }
@@ -387,16 +396,41 @@ async fn socket_final(
                 true
             },
             update = conn.user_handle.receiver.recv() => {
-                if let Some(update) = update {
+                match update {
-                    conn.handle_update(&mut events, update).await?;
+                    Some(ConnectionMessage::Update(update)) => {
-                    for i in &events {
+                        conn.handle_update(&mut events, update).await?;
-                        xml_writer.write_event_async(i).await?;
+                        for i in &events {
+                            xml_writer.write_event_async(i).await?;
+                        }
+                        events.clear();
+                        xml_writer.get_mut().flush().await?;
+                    }
+                    Some(ConnectionMessage::Stop(reason)) => {
+                        tracing::debug!("Connection is being terminated: {reason:?}");
+                        let kind = match reason {
+                            StopReason::ServerShutdown => StreamErrorKind::SystemShutdown,
+                            StopReason::InternalError => StreamErrorKind::InternalServerError,
+                        };
+                        StreamError { kind }.serialize(&mut events);
+                        ServerStreamEnd.serialize(&mut events);
+                        for i in &events {
+                            xml_writer.write_event_async(i).await?;
+                        }
+                        events.clear();
+                        xml_writer.get_mut().flush().await?;
+                        break;
+                    }
+                    None => {
+                        log::error!("Player is terminated, must terminate the connection");
+                        StreamError { kind: StreamErrorKind::SystemShutdown }.serialize(&mut events);
+                        ServerStreamEnd.serialize(&mut events);
+                        for i in &events {
+                            xml_writer.write_event_async(i).await?;
+                        }
+                        events.clear();
+                        xml_writer.get_mut().flush().await?;
+                        break;
                     }
-                    events.clear();
-                    xml_writer.get_mut().flush().await?;
-                } else {
-                    log::warn!("Player is terminated, must terminate the connection");
-                    break;
                 }
                 false
             }
@@ -414,12 +448,15 @@ struct XmppConnection<'a> {
     user: &'a Authenticated,
     user_handle: &'a mut PlayerConnection,
     rooms: &'a RoomRegistry,
+    hostname: Str,
+    hostname_rooms: Str,
 }
 
 impl<'a> XmppConnection<'a> {
+    #[tracing::instrument(skip(self, output, packet), name = "XmppConnection::handle_packet")]
     async fn handle_packet(&mut self, output: &mut Vec<Event<'static>>, packet: ClientPacket) -> Result<bool> {
         let res = match packet {
-            proto::ClientPacket::Iq(iq) => {
+            ClientPacket::Iq(iq) => {
                 self.handle_iq(output, iq).await;
                 false
             }
@@ -427,37 +464,16 @@ impl<'a> XmppConnection<'a> {
                 self.handle_message(output, m).await?;
                 false
             }
-            proto::ClientPacket::Presence(p) => {
+            ClientPacket::Presence(p) => {
                 self.handle_presence(output, p).await?;
                 false
             }
-            proto::ClientPacket::StreamEnd => {
+            ClientPacket::StreamEnd => {
                 ServerStreamEnd.serialize(output);
                 true
             }
+            ClientPacket::Eos => true,
         };
         Ok(res)
     }
 }
-
-async fn read_xml_header(
-    xml_reader: &mut NsReader<(impl AsyncBufRead + Unpin)>,
-    reader_buf: &mut Vec<u8>,
-) -> Result<()> {
-    if let Event::Decl(bytes) = xml_reader.read_event_into_async(reader_buf).await? {
-        // this is <?xml ...> header
-        if let Some(encoding) = bytes.encoding() {
-            let encoding = encoding?;
-            if &*encoding == b"UTF-8" {
-                Ok(())
-            } else {
-                Err(anyhow!("Unsupported encoding: {encoding:?}"))
-            }
-        } else {
-            // Err(fail("No XML encoding provided"))
-            Ok(())
-        }
-    } else {
-        Err(anyhow!("Expected XML header"))
-    }
-}

crates/projection-xmpp/src/message.rs

@@ -1,5 +1,6 @@
 //! Handling of all client2server message stanzas
 
+use lavina_core::player::PlayerId;
 use quick_xml::events::Event;
 
 use lavina_core::prelude::*;
@@ -18,17 +19,17 @@ impl<'a> XmppConnection<'a> {
             resource: _,
         }) = m.to
         {
-            if server.0.as_ref() == "rooms.localhost" && m.r#type == MessageType::Groupchat {
+            if server.0.as_ref() == &*self.hostname_rooms && m.r#type == MessageType::Groupchat {
                 self.user_handle.send_message(RoomId::from(name.0.clone())?, m.body.clone().into()).await?;
                 Message::<()> {
                     to: Some(Jid {
                         name: Some(self.user.xmpp_name.clone()),
-                        server: Server("localhost".into()),
+                        server: Server(self.hostname.clone()),
                         resource: Some(self.user.xmpp_resource.clone()),
                     }),
                     from: Some(Jid {
                         name: Some(name),
-                        server: Server("rooms.localhost".into()),
+                        server: Server(self.hostname_rooms.clone()),
                         resource: Some(self.user.xmpp_muc_name.clone()),
                     }),
                     id: m.id,
@@ -40,6 +41,9 @@ impl<'a> XmppConnection<'a> {
                 }
                 .serialize(output);
                 Ok(())
+            } else if server.0.as_ref() == &*self.hostname && m.r#type == MessageType::Chat {
+                self.user_handle.send_dialog_message(PlayerId::from(name.0.clone())?, m.body.clone()).await?;
+                Ok(())
             } else {
                 todo!()
             }

crates/projection-xmpp/src/presence.rs

@@ -4,7 +4,7 @@ use quick_xml::events::Event;
 
 use lavina_core::prelude::*;
 use lavina_core::room::RoomId;
-use proto_xmpp::bind::{Jid, Server};
+use proto_xmpp::bind::{Jid, Name, Server};
 use proto_xmpp::client::Presence;
 use proto_xmpp::xml::{Ignore, ToXml};
 
@@ -12,42 +12,67 @@ use crate::XmppConnection;
 
 impl<'a> XmppConnection<'a> {
     pub async fn handle_presence(&mut self, output: &mut Vec<Event<'static>>, p: Presence<Ignore>) -> Result<()> {
-        let response = if p.to.is_none() {
+        match p.to {
-            Presence::<()> {
+            None => {
-                to: Some(Jid {
+                self.self_presence(output, p.r#type.as_deref()).await;
-                    name: Some(self.user.xmpp_name.clone()),
-                    server: Server("localhost".into()),
-                    resource: Some(self.user.xmpp_resource.clone()),
-                }),
-                from: Some(Jid {
-                    name: Some(self.user.xmpp_name.clone()),
-                    server: Server("localhost".into()),
-                    resource: Some(self.user.xmpp_resource.clone()),
-                }),
-                ..Default::default()
             }
-        } else if let Some(Jid {
+            Some(Jid {
-            name: Some(name),
+                name: Some(name),
-            server,
+                server,
-            resource: Some(resource),
+                // resources in MUCs are members' personas – not implemented (yet?)
-        }) = p.to
+                resource: Some(_),
-        {
+            }) if server.0 == self.hostname_rooms => {
-            let a = self.user_handle.join_room(RoomId::from(name.0.clone())?).await?;
+                self.muc_presence(name, output).await?;
-            Presence::<()> {
-                to: Some(Jid {
-                    name: Some(self.user.xmpp_name.clone()),
-                    server: Server("localhost".into()),
-                    resource: Some(self.user.xmpp_resource.clone()),
-                }),
-                from: Some(Jid {
-                    name: Some(name.clone()),
-                    server: Server("rooms.localhost".into()),
-                    resource: Some(self.user.xmpp_muc_name.clone()),
-                }),
-                ..Default::default()
             }
-        } else {
+            _ => {
-            Presence::<()>::default()
+                // TODO other presence cases
+                let response = Presence::<()>::default();
+                response.serialize(output);
+            }
+        }
+        Ok(())
+    }
+
+    async fn self_presence(&mut self, output: &mut Vec<Event<'static>>, r#type: Option<&str>) {
+        match r#type {
+            Some("unavailable") => {
+                // do not print anything
+            }
+            None => {
+                let response = Presence::<()> {
+                    to: Some(Jid {
+                        name: Some(self.user.xmpp_name.clone()),
+                        server: Server(self.hostname.clone()),
+                        resource: Some(self.user.xmpp_resource.clone()),
+                    }),
+                    from: Some(Jid {
+                        name: Some(self.user.xmpp_name.clone()),
+                        server: Server(self.hostname.clone()),
+                        resource: Some(self.user.xmpp_resource.clone()),
+                    }),
+                    ..Default::default()
+                };
+                response.serialize(output);
+            }
+            _ => todo!(),
+        }
+    }
+
+    async fn muc_presence(&mut self, name: Name, output: &mut Vec<Event<'static>>) -> Result<()> {
+        let a = self.user_handle.join_room(RoomId::from(name.0.clone())?).await?;
+        // TODO handle bans
+        let response = Presence::<()> {
+            to: Some(Jid {
+                name: Some(self.user.xmpp_name.clone()),
+                server: Server(self.hostname.clone()),
+                resource: Some(self.user.xmpp_resource.clone()),
+            }),
+            from: Some(Jid {
+                name: Some(name.clone()),
+                server: Server(self.hostname_rooms.clone()),
+                resource: Some(self.user.xmpp_muc_name.clone()),
+            }),
+            ..Default::default()
         };
         response.serialize(output);
         Ok(())

crates/projection-xmpp/src/proto.rs

@@ -25,7 +25,7 @@ impl FromXml for IqClientBody {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let bytes = match event {
                 Event::Start(bytes) => bytes,
                 Event::Empty(bytes) => bytes,
@@ -52,13 +52,14 @@ pub enum ClientPacket {
     Message(Message<Ignore>),
     Presence(Presence<Ignore>),
     StreamEnd,
+    Eos,
 }
 
 impl FromXml for ClientPacket {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             match event {
                 Event::Start(bytes) | Event::Empty(bytes) => {
                     let name = bytes.name();
@@ -83,6 +84,7 @@ impl FromXml for ClientPacket {
                         return Err(anyhow!("Unexpected XML event: {event:?}"));
                     }
                 }
+                Event::Eof => Ok(ClientPacket::Eos),
                 _ => {
                     return Err(anyhow!("Unexpected XML event: {event:?}"));
                 }

crates/projection-xmpp/src/updates.rs

@@ -17,16 +17,17 @@ impl<'a> XmppConnection<'a> {
                 room_id,
                 author_id,
                 body,
+                created_at: _,
             } => {
                 Message::<()> {
                     to: Some(Jid {
                         name: Some(self.user.xmpp_name.clone()),
-                        server: Server("localhost".into()),
+                        server: Server(self.hostname.clone()),
                         resource: Some(self.user.xmpp_resource.clone()),
                     }),
                     from: Some(Jid {
                         name: Some(Name(room_id.into_inner().into())),
-                        server: Server("rooms.localhost".into()),
+                        server: Server(self.hostname_rooms.clone()),
                         resource: Some(Resource(author_id.into_inner().into())),
                     }),
                     id: None,
@@ -38,6 +39,34 @@ impl<'a> XmppConnection<'a> {
                 }
                 .serialize(output);
             }
+            Updates::NewDialogMessage {
+                sender,
+                receiver,
+                body,
+                created_at: _,
+            } => {
+                if receiver == self.user.player_id {
+                    Message::<()> {
+                        to: Some(Jid {
+                            name: Some(self.user.xmpp_name.clone()),
+                            server: Server(self.hostname.clone()),
+                            resource: Some(self.user.xmpp_resource.clone()),
+                        }),
+                        from: Some(Jid {
+                            name: Some(Name(sender.as_inner().clone())),
+                            server: Server(self.hostname.clone()),
+                            resource: Some(Resource(sender.into_inner())),
+                        }),
+                        id: None,
+                        r#type: MessageType::Chat,
+                        lang: None,
+                        subject: None,
+                        body: body.into(),
+                        custom: vec![],
+                    }
+                    .serialize(output);
+                }
+            }
             _ => {}
         }
         Ok(())

crates/projection-xmpp/tests/lib.rs

@@ -1,5 +1,4 @@
 use std::io::ErrorKind;
-use std::net::SocketAddr;
 use std::sync::Arc;
 use std::time::Duration;
 
@@ -17,10 +16,10 @@ use tokio_rustls::rustls::client::ServerCertVerifier;
 use tokio_rustls::rustls::{ClientConfig, ServerName};
 use tokio_rustls::TlsConnector;
 
-use lavina_core::player::PlayerRegistry;
+use lavina_core::auth::Authenticator;
 use lavina_core::repo::{Storage, StorageConfig};
-use lavina_core::room::RoomRegistry;
+use lavina_core::LavinaCore;
-use projection_xmpp::{launch, ServerConfig};
+use projection_xmpp::{launch, RunningServer, ServerConfig};
 use proto_xmpp::xml::{Continuation, FromXml, Parser};
 
 pub async fn read_irc_message(reader: &mut BufReader<ReadHalf<'_>>, buf: &mut Vec<u8>) -> Result<usize> {
@@ -83,7 +82,7 @@ impl<'a> TestScopeTls<'a> {
     fn new(stream: &'a mut TlsStream<TcpStream>, buffer: Vec<u8>) -> TestScopeTls<'a> {
         let (reader, writer) = tokio::io::split(stream);
         let reader = NsReader::from_reader(BufReader::new(reader));
-        let timeout = Duration::from_millis(100);
+        let timeout = Duration::from_millis(500);
 
         TestScopeTls {
             reader,
@@ -122,29 +121,54 @@ impl ServerCertVerifier for IgnoreCertVerification {
     }
 }
 
+struct TestServer {
+    metrics: MetricsRegistry,
+    storage: Storage,
+    core: LavinaCore,
+    server: RunningServer,
+}
+impl TestServer {
+    async fn start() -> Result<TestServer> {
+        let _ = tracing_subscriber::fmt::try_init();
+        let config = ServerConfig {
+            listen_on: "127.0.0.1:0".parse().unwrap(),
+            cert: "tests/certs/xmpp.pem".parse().unwrap(),
+            key: "tests/certs/xmpp.key".parse().unwrap(),
+            hostname: "localhost".into(),
+        };
+        let metrics = MetricsRegistry::new();
+        let storage = Storage::open(StorageConfig {
+            db_path: ":memory:".into(),
+        })
+        .await?;
+        let core = LavinaCore::new(metrics.clone(), storage.clone()).await?;
+        let server = launch(config, core.clone(), metrics.clone(), storage.clone()).await.unwrap();
+        Ok(TestServer {
+            metrics,
+            storage,
+            core,
+            server,
+        })
+    }
+
+    async fn shutdown(self) -> Result<()> {
+        self.server.terminate().await?;
+        self.core.shutdown().await?;
+        self.storage.close().await?;
+        Ok(())
+    }
+}
+
 #[tokio::test]
 async fn scenario_basic() -> Result<()> {
-    tracing_subscriber::fmt::try_init();
+    let mut server = TestServer::start().await?;
-    let config = ServerConfig {
-        listen_on: "127.0.0.1:0".parse().unwrap(),
-        cert: "tests/certs/xmpp.pem".parse().unwrap(),
-        key: "tests/certs/xmpp.key".parse().unwrap(),
-    };
-    let mut metrics = MetricsRegistry::new();
-    let mut storage = Storage::open(StorageConfig {
-        db_path: ":memory:".into(),
-    })
-    .await?;
-    let rooms = RoomRegistry::new(&mut metrics, storage.clone()).unwrap();
-    let players = PlayerRegistry::empty(rooms.clone(), &mut metrics).unwrap();
-    let server = launch(config, players, rooms, metrics, storage.clone()).await.unwrap();
 
     // test scenario
 
-    storage.create_user("tester").await?;
+    server.storage.create_user("tester").await?;
-    storage.set_password("tester", "password").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
 
-    let mut stream = TcpStream::connect(server.addr).await?;
+    let mut stream = TcpStream::connect(server.server.addr).await?;
     let mut s = TestScope::new(&mut stream);
     tracing::info!("TCP connection established");
 
@@ -169,7 +193,7 @@ async fn scenario_basic() -> Result<()> {
             .with_no_client_auth(),
     ));
     tracing::info!("Initiating TLS connection...");
-    let mut stream = connector.connect(ServerName::IpAddress(server.addr.ip()), stream).await?;
+    let mut stream = connector.connect(ServerName::IpAddress(server.server.addr.ip()), stream).await?;
     tracing::info!("TLS connection established");
 
     let mut s = TestScopeTls::new(&mut stream, buffer);
@@ -179,37 +203,170 @@ async fn scenario_basic() -> Result<()> {
     assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
     assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
 
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"mechanisms"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"mechanism"));
+    assert_matches!(s.next_xml_event().await?, Event::Text(b) => assert_eq!(&*b, b"PLAIN"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"mechanism"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"mechanisms"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+
+    // base64-encoded b"\x00tester\x00password"
+    s.send(r#"<auth xmlns="urn:ietf:params:xml:ns:xmpp-sasl" mechanism="PLAIN">AHRlc3RlcgBwYXNzd29yZA==</auth>"#)
+        .await?;
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"success"));
+    s.send(r#"<?xml version="1.0"?>"#).await?;
+    s.send(r#"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="127.0.0.1" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns="jabber:client" version="1.0">"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"bind"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    s.send(r#"<iq id="bind_1" type="set"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><resource>kek</resource></bind></iq>"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"iq"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"bind"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"jid"));
+    assert_matches!(s.next_xml_event().await?, Event::Text(b) => assert_eq!(&*b, b"tester@localhost/tester"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"jid"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"bind"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"iq"));
+    s.send(r#"<presence xmlns="jabber:client" type="unavailable"><status>Logged out</status></presence>"#).await?;
+
     stream.shutdown().await?;
 
     // wrap up
 
-    server.terminate().await?;
+    server.shutdown().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_wrong_password() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
+
+    let mut stream = TcpStream::connect(server.server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+    tracing::info!("TCP connection established");
+
+    s.send(r#"<?xml version="1.0"?>"#).await?;
+    s.send(r#"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="127.0.0.1" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns="jabber:client" version="1.0">"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"starttls"));
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"required"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"starttls"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    s.send(r#"<starttls/>"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"proceed"));
+    let buffer = s.buffer;
+    tracing::info!("TLS feature negotiation complete");
+
+    let connector = TlsConnector::from(Arc::new(
+        ClientConfig::builder()
+            .with_safe_defaults()
+            .with_custom_certificate_verifier(Arc::new(IgnoreCertVerification))
+            .with_no_client_auth(),
+    ));
+    tracing::info!("Initiating TLS connection...");
+    let mut stream = connector.connect(ServerName::IpAddress(server.server.addr.ip()), stream).await?;
+    tracing::info!("TLS connection established");
+
+    let mut s = TestScopeTls::new(&mut stream, buffer);
+
+    s.send(r#"<?xml version="1.0"?>"#).await?;
+    s.send(r#"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="127.0.0.1" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns="jabber:client" version="1.0">"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
+
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"mechanisms"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"mechanism"));
+    assert_matches!(s.next_xml_event().await?, Event::Text(b) => assert_eq!(&*b, b"PLAIN"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"mechanism"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"mechanisms"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+
+    // base64-encoded b"\x00tester\x00password2"
+    s.send(r#"<auth xmlns="urn:ietf:params:xml:ns:xmpp-sasl" mechanism="PLAIN">AHRlc3RlcgBwYXNzd29yZDI=</auth>"#)
+        .await?;
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"failure"));
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"not-authorized"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"failure"));
+
+    let _ = stream.shutdown().await;
+
+    // wrap up
+
+    server.shutdown().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_basic_without_headers() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
+
+    let mut stream = TcpStream::connect(server.server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+    tracing::info!("TCP connection established");
+
+    s.send(r#"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="127.0.0.1" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns="jabber:client" version="1.0">"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"starttls"));
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"required"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"starttls"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    s.send(r#"<starttls/>"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"proceed"));
+    let buffer = s.buffer;
+    tracing::info!("TLS feature negotiation complete");
+
+    let connector = TlsConnector::from(Arc::new(
+        ClientConfig::builder()
+            .with_safe_defaults()
+            .with_custom_certificate_verifier(Arc::new(IgnoreCertVerification))
+            .with_no_client_auth(),
+    ));
+    tracing::info!("Initiating TLS connection...");
+    let mut stream = connector.connect(ServerName::IpAddress(server.server.addr.ip()), stream).await?;
+    tracing::info!("TLS connection established");
+
+    let mut s = TestScopeTls::new(&mut stream, buffer);
+
+    s.send(r#"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="127.0.0.1" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns="jabber:client" version="1.0">"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
+
+    stream.shutdown().await?;
+
+    // wrap up
+
+    server.shutdown().await?;
     Ok(())
 }
 
 #[tokio::test]
 async fn terminate_socket() -> Result<()> {
-    tracing_subscriber::fmt::try_init();
+    let mut server = TestServer::start().await?;
-    let config = ServerConfig {
+
-        listen_on: "127.0.0.1:0".parse().unwrap(),
-        cert: "tests/certs/xmpp.pem".parse().unwrap(),
-        key: "tests/certs/xmpp.key".parse().unwrap(),
-    };
-    let mut metrics = MetricsRegistry::new();
-    let mut storage = Storage::open(StorageConfig {
-        db_path: ":memory:".into(),
-    })
-    .await?;
-    let rooms = RoomRegistry::new(&mut metrics, storage.clone()).unwrap();
-    let players = PlayerRegistry::empty(rooms.clone(), &mut metrics).unwrap();
-    let server = launch(config, players, rooms, metrics, storage.clone()).await.unwrap();
-    let address: SocketAddr = ("127.0.0.1:0".parse().unwrap());
     // test scenario
 
-    storage.create_user("tester").await?;
+    server.storage.create_user("tester").await?;
-    storage.set_password("tester", "password").await?;
+    Authenticator::new(&server.storage).set_password("tester", "password").await?;
 
-    let mut stream = TcpStream::connect(server.addr).await?;
+    let mut stream = TcpStream::connect(server.server.addr).await?;
     let mut s = TestScope::new(&mut stream);
     tracing::info!("TCP connection established");
 
@@ -225,7 +382,6 @@ async fn terminate_socket() -> Result<()> {
     assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"features"));
     s.send(r#"<starttls/>"#).await?;
     assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"proceed"));
-    let buffer = s.buffer;
 
     let connector = TlsConnector::from(Arc::new(
         ClientConfig::builder()
@@ -235,10 +391,10 @@ async fn terminate_socket() -> Result<()> {
     ));
 
     tracing::info!("Initiating TLS connection...");
-    let mut stream = connector.connect(ServerName::IpAddress(server.addr.ip()), stream).await?;
+    let mut stream = connector.connect(ServerName::IpAddress(server.server.addr.ip()), stream).await?;
     tracing::info!("TLS connection established");
 
-    server.terminate().await?;
+    server.shutdown().await?;
 
     assert_eq!(stream.read_u8().await.unwrap_err().kind(), ErrorKind::UnexpectedEof);
 

crates/proto-irc/src/client.rs

@@ -53,7 +53,7 @@ pub enum ClientMessage {
     },
     Part {
         chan: Chan,
-        message: Str,
+        message: Option<Str>,
     },
     /// `PRIVMSG <target> :<msg>`
     PrivateMessage {
@@ -235,14 +235,20 @@ fn client_message_topic(input: &str) -> IResult<&str, ClientMessage> {
 fn client_message_part(input: &str) -> IResult<&str, ClientMessage> {
     let (input, _) = tag("PART ")(input)?;
     let (input, chan) = chan(input)?;
-    let (input, _) = tag(" ")(input)?;
+    let (input, t) = opt(tag(" "))(input)?;
+    match t {
+        Some(_) => (),
+        None => {
+            return Ok((input, ClientMessage::Part { chan, message: None }));
+        }
+    }
     let (input, r) = opt(tag(":"))(input)?;
     let (input, message) = match r {
         Some(_) => token(input)?,
         None => receiver(input)?,
     };
 
-    let message = message.into();
+    let message = Some(message.into());
     Ok((input, ClientMessage::Part { chan, message }))
 }
 
@@ -471,7 +477,18 @@ mod test {
         let input = "PART #chan :Pokasiki !!!";
         let expected = ClientMessage::Part {
             chan: Chan::Global("chan".into()),
-            message: "Pokasiki !!!".into(),
+            message: Some("Pokasiki !!!".into()),
+        };
+
+        let result = client_message(input);
+        assert_matches!(result, Ok(result) => assert_eq!(expected, result));
+    }
+    #[test]
+    fn test_client_message_part_empty() {
+        let input = "PART #chan";
+        let expected = ClientMessage::Part {
+            chan: Chan::Global("chan".into()),
+            message: None,
         };
 
         let result = client_message(input);

crates/proto-irc/src/lib.rs

@@ -19,8 +19,19 @@ use tokio::io::{AsyncWrite, AsyncWriteExt};
 /// Single message tag value.
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub struct Tag {
-    key: Str,
+    pub key: Str,
-    value: Option<u8>,
+    pub value: Option<Str>,
+}
+
+impl Tag {
+    pub async fn write_async(&self, writer: &mut (impl AsyncWrite + Unpin)) -> std::io::Result<()> {
+        writer.write_all(self.key.as_bytes()).await?;
+        if let Some(value) = &self.value {
+            writer.write_all(b"=").await?;
+            writer.write_all(value.as_bytes()).await?;
+        }
+        Ok(())
+    }
 }
 
 fn receiver(input: &str) -> IResult<&str, &str> {

crates/proto-irc/src/server.rs

@@ -18,6 +18,13 @@ pub struct ServerMessage {
 
 impl ServerMessage {
     pub async fn write_async(&self, writer: &mut (impl AsyncWrite + Unpin)) -> std::io::Result<()> {
+        if !self.tags.is_empty() {
+            for tag in &self.tags {
+                writer.write_all(b"@").await?;
+                tag.write_async(writer).await?;
+                writer.write_all(b" ").await?;
+            }
+        }
         match &self.sender {
             Some(ref sender) => {
                 writer.write_all(b":").await?;
@@ -334,10 +341,15 @@ impl ServerMessageBody {
                 writer.write_all(b" = ").await?;
                 chan.write_async(writer).await?;
                 writer.write_all(b" :").await?;
-                for member in members {
+                {
+                    let member = &members.head;
                     writer.write_all(member.prefix.to_string().as_bytes()).await?;
                     writer.write_all(member.nick.as_bytes()).await?;
+                }
+                for member in &members.tail {
                     writer.write_all(b" ").await?;
+                    writer.write_all(member.prefix.to_string().as_bytes()).await?;
+                    writer.write_all(member.nick.as_bytes()).await?;
                 }
             }
             ServerMessageBody::N366NamesReplyEnd { client, chan } => {

crates/proto-xmpp/src/bind.rs

@@ -11,12 +11,15 @@ pub const XMLNS: &'static str = "urn:ietf:params:xml:ns:xmpp-bind";
 
 // TODO remove `pub` in newtypes, introduce validation
 
+/// Name (node identifier) of an XMPP entity. Placed before the `@` in a JID.
 #[derive(PartialEq, Eq, Debug, Clone)]
 pub struct Name(pub Str);
 
+/// Server name of an XMPP entity. Placed after the `@` and before the `/` in a JID.
 #[derive(PartialEq, Eq, Debug, Clone)]
 pub struct Server(pub Str);
 
+/// Resource of an XMPP entity. Placed after the `/` in a JID.
 #[derive(PartialEq, Eq, Debug, Clone)]
 pub struct Resource(pub Str);
 
@@ -45,7 +48,7 @@ impl Jid {
         use lazy_static::lazy_static;
         use regex::Regex;
         lazy_static! {
-            static ref RE: Regex = Regex::new(r"^(([a-zA-Z]+)@)?([a-zA-Z.]+)(/([a-zA-Z\-]+))?$").unwrap();
+            static ref RE: Regex = Regex::new(r"^(([a-zA-Z0-9]+)@)?([^@/]+)(/([a-zA-Z0-9\-]+))?$").unwrap();
         }
         let m = RE.captures(i).ok_or(anyhow!("Incorrectly format jid: {i}"))?;
 
@@ -79,7 +82,7 @@ impl FromXml for BindRequest {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut resource: Option<Str> = None;
             let Event::Start(bytes) = event else {
                 return Err(anyhow!("Unexpected XML event: {event:?}"));
@@ -94,15 +97,15 @@ impl FromXml for BindRequest {
                 return Err(anyhow!("Incorrect namespace"));
             }
             loop {
-                let (namespace, event) = yield;
+                (namespace, event) = yield;
                 match event {
                     Event::Start(bytes) if bytes.name().0 == b"resource" => {
-                        let (namespace, event) = yield;
+                        (namespace, event) = yield;
                         let Event::Text(text) = event else {
                             return Err(anyhow!("Unexpected XML event: {event:?}"));
                         };
                         resource = Some(std::str::from_utf8(&*text)?.into());
-                        let (namespace, event) = yield;
+                        (namespace, event) = yield;
                         let Event::End(bytes) = event else {
                             return Err(anyhow!("Unexpected XML event: {event:?}"));
                         };

crates/proto-xmpp/src/client.rs

@@ -255,11 +255,49 @@ impl MessageType {
     }
 }
 
+/// Error response to an IQ request.
+///
+/// https://xmpp.org/rfcs/rfc6120.html#stanzas-error
+pub struct IqError {
+    pub r#type: IqErrorType,
+}
+
+pub enum IqErrorType {
+    /// Retry after providing credentials
+    Auth,
+    /// Do not retry (the error cannot be remedied)
+    Cancel,
+    /// Proceed (the condition was only a warning)
+    Continue,
+    /// Retry after changing the data sent
+    Modify,
+    /// Retry after waiting (the error is temporary)
+    Wait,
+}
+impl IqErrorType {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            IqErrorType::Auth => "auth",
+            IqErrorType::Cancel => "cancel",
+            IqErrorType::Continue => "continue",
+            IqErrorType::Modify => "modify",
+            IqErrorType::Wait => "wait",
+        }
+    }
+}
+
+impl ToXml for IqError {
+    fn serialize(&self, events: &mut Vec<Event<'static>>) {
+        let bytes = BytesStart::new(format!(r#"error xmlns="{}" type="{}""#, XMLNS, self.r#type.as_str()));
+        events.push(Event::Empty(bytes));
+    }
+}
+
 #[derive(PartialEq, Eq, Debug)]
 pub struct Iq<T> {
-    pub from: Option<String>,
+    pub from: Option<Jid>,
     pub id: String,
-    pub to: Option<String>,
+    pub to: Option<Jid>,
     pub r#type: IqType,
     pub body: T,
 }
@@ -285,9 +323,9 @@ enum IqParserInner<T: FromXml> {
     Final(IqParserState<T>),
 }
 struct IqParserState<T> {
-    pub from: Option<String>,
+    pub from: Option<Jid>,
     pub id: Option<String>,
-    pub to: Option<String>,
+    pub to: Option<Jid>,
     pub r#type: Option<IqType>,
     pub body: Option<T>,
 }
@@ -310,13 +348,15 @@ impl<T: FromXml> Parser for IqParser<T> {
                         let attr = fail_fast!(attr);
                         if attr.key.0 == b"from" {
                             let value = fail_fast!(std::str::from_utf8(&*attr.value));
-                            state.from = Some(value.to_string())
+                            let value = fail_fast!(Jid::from_string(value));
+                            state.from = Some(value)
                         } else if attr.key.0 == b"id" {
                             let value = fail_fast!(std::str::from_utf8(&*attr.value));
                             state.id = Some(value.to_string())
                         } else if attr.key.0 == b"to" {
                             let value = fail_fast!(std::str::from_utf8(&*attr.value));
-                            state.to = Some(value.to_string())
+                            let value = fail_fast!(Jid::from_string(value));
+                            state.to = Some(value)
                         } else if attr.key.0 == b"type" {
                             let value = fail_fast!(IqType::from_str(&*attr.value));
                             state.r#type = Some(value);
@@ -338,7 +378,7 @@ impl<T: FromXml> Parser for IqParser<T> {
                 }
             },
             IqParserInner::Final(state) => {
-                if let Event::End(ref bytes) = event {
+                if let Event::End(_) = event {
                     let id = fail_fast!(state.id.ok_or_else(|| ffail!("No id provided")));
                     let r#type = fail_fast!(state.r#type.ok_or_else(|| ffail!("No type provided")));
                     let body = fail_fast!(state.body.ok_or_else(|| ffail!("No body provided")));
@@ -393,15 +433,17 @@ impl<T: ToXml> ToXml for Iq<T> {
         let mut start = BytesStart::new(start);
         let mut attrs = vec![];
         if let Some(ref from) = self.from {
+            let value = from.to_string().into_bytes();
             attrs.push(Attribute {
                 key: QName(b"from"),
-                value: from.as_bytes().into(),
+                value: value.into(),
             });
         };
         if let Some(ref to) = self.to {
+            let value = to.to_string().into_bytes();
             attrs.push(Attribute {
                 key: QName(b"to"),
-                value: to.as_bytes().into(),
+                value: value.into(),
             });
         }
         attrs.push(Attribute {
@@ -486,7 +528,7 @@ impl<T: FromXml> FromXml for Presence<T> {
     type P = impl Parser<Output = Result<Presence<T>>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let (bytes, end) = match event {
                 Event::Start(bytes) => (bytes, false),
                 Event::Empty(bytes) => (bytes, true),
@@ -515,37 +557,37 @@ impl<T: FromXml> FromXml for Presence<T> {
                 return Ok(p);
             }
             loop {
-                let (namespace, event) = yield;
+                (namespace, event) = yield;
                 match event {
                     Event::Start(bytes) => match bytes.name().0 {
                         b"show" => {
-                            let (_, event) = yield;
+                            (namespace, event) = yield;
                             let Event::Text(bytes) = event else {
                                 return Err(ffail!("Unexpected XML event: {event:?}"));
                             };
                             let i = PresenceShow::from_str(bytes)?;
                             p.show = Some(i);
 
-                            let (_, event) = yield;
+                            (namespace, event) = yield;
                             let Event::End(_) = event else {
                                 return Err(ffail!("Unexpected XML event: {event:?}"));
                             };
                         }
                         b"status" => {
-                            let (_, event) = yield;
+                            (namespace, event) = yield;
                             let Event::Text(bytes) = event else {
                                 return Err(ffail!("Unexpected XML event: {event:?}"));
                             };
                             let s = std::str::from_utf8(bytes)?;
                             p.status.push(s.to_string());
 
-                            let (_, event) = yield;
+                            (namespace, event) = yield;
                             let Event::End(_) = event else {
                                 return Err(ffail!("Unexpected XML event: {event:?}"));
                             };
                         }
                         b"priority" => {
-                            let (_, event) = yield;
+                            (namespace, event) = yield;
                             let Event::Text(bytes) = event else {
                                 return Err(ffail!("Unexpected XML event: {event:?}"));
                             };
@@ -553,7 +595,7 @@ impl<T: FromXml> FromXml for Presence<T> {
                             let i = s.parse()?;
                             p.priority = Some(PresencePriority(i));
 
-                            let (_, event) = yield;
+                            (namespace, event) = yield;
                             let Event::End(_) = event else {
                                 return Err(ffail!("Unexpected XML event: {event:?}"));
                             };

crates/proto-xmpp/src/disco.rs

@@ -21,7 +21,7 @@ impl FromXml for InfoQuery {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut node = None;
             let mut identity = vec![];
             let mut feature = vec![];
@@ -48,7 +48,7 @@ impl FromXml for InfoQuery {
                 });
             }
             loop {
-                let (namespace, event) = yield;
+                (namespace, event) = yield;
                 let bytes = match event {
                     Event::Start(bytes) => bytes,
                     Event::Empty(bytes) => bytes,
@@ -141,7 +141,7 @@ impl FromXml for Identity {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut category = None;
             let mut name = None;
             let mut r#type = None;
@@ -179,8 +179,8 @@ impl FromXml for Identity {
                 return Ok(item);
             }
 
-            let (namespace, event) = yield;
+            (namespace, event) = yield;
-            let Event::End(bytes) = event else {
+            let Event::End(_) = event else {
                 return Err(ffail!("Unexpected XML event: {event:?}"));
             };
             Ok(item)
@@ -209,7 +209,7 @@ impl FromXml for Feature {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut var = None;
             let (bytes, end) = match event {
                 Event::Start(bytes) => (bytes, false),
@@ -234,8 +234,8 @@ impl FromXml for Feature {
                 return Ok(item);
             }
 
-            let (namespace, event) = yield;
+            (namespace, event) = yield;
-            let Event::End(bytes) = event else {
+            let Event::End(_) = event else {
                 return Err(ffail!("Unexpected XML event: {event:?}"));
             };
             Ok(item)
@@ -258,9 +258,9 @@ impl FromXml for ItemQuery {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut item = vec![];
-            let (bytes, end) = match event {
+            let (_, end) = match event {
                 Event::Start(bytes) => (bytes, false),
                 Event::Empty(bytes) => (bytes, true),
                 _ => return Err(ffail!("Unexpected XML event: {event:?}")),
@@ -269,7 +269,7 @@ impl FromXml for ItemQuery {
                 return Ok(ItemQuery { item });
             }
             loop {
-                let (namespace, event) = yield;
+                (namespace, event) = yield;
                 let bytes = match event {
                     Event::Start(bytes) => bytes,
                     Event::Empty(bytes) => bytes,
@@ -296,7 +296,7 @@ impl FromXmlTag for ItemQuery {
 
 impl ToXml for ItemQuery {
     fn serialize(&self, events: &mut Vec<Event<'static>>) {
-        let mut bytes = BytesStart::new(format!(r#"query xmlns="{}""#, XMLNS_ITEM));
+        let bytes = BytesStart::new(format!(r#"query xmlns="{}""#, XMLNS_ITEM));
         let empty = self.item.is_empty();
         if empty {
             events.push(Event::Empty(bytes));
@@ -342,7 +342,7 @@ impl FromXml for Item {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(_, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut jid = None;
             let mut name = None;
             let mut node = None;
@@ -378,8 +378,8 @@ impl FromXml for Item {
                 return Ok(item);
             }
 
-            let (namespace, event) = yield;
+            (_, event) = yield;
-            let Event::End(bytes) = event else {
+            let Event::End(_) = event else {
                 return Err(ffail!("Unexpected XML event: {event:?}"));
             };
             Ok(item)

crates/proto-xmpp/src/lib.rs

@@ -10,6 +10,7 @@ pub mod sasl;
 pub mod session;
 pub mod stanzaerror;
 pub mod stream;
+pub mod streamerror;
 pub mod tls;
 pub mod xml;
 

crates/proto-xmpp/src/muc/mod.rs

@@ -19,7 +19,7 @@ impl FromXml for History {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut history = History::default();
             let (bytes, end) = match event {
                 Event::Start(bytes) if bytes.name().0 == Self::NAME.as_bytes() => (bytes, false),
@@ -51,7 +51,7 @@ impl FromXml for History {
                 return Ok(history);
             }
 
-            let (namespace, event) = yield;
+            (namespace, event) = yield;
             let Event::End(bytes) = event else {
                 return Err(anyhow!("Unexpected XML event: {event:?}"));
             };
@@ -73,17 +73,17 @@ impl FromXml for Password {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let bytes = match event {
                 Event::Start(bytes) if bytes.name().0 == Self::NAME.as_bytes() => bytes,
                 _ => return Err(anyhow!("Unexpected XML event: {event:?}")),
             };
-            let (namespace, event) = yield;
+            (namespace, event) = yield;
             let Event::Text(bytes) = event else {
                 return Err(anyhow!("Unexpected XML event: {event:?}"));
             };
             let s = std::str::from_utf8(bytes)?.to_string();
-            let (namespace, event) = yield;
+            (namespace, event) = yield;
             let Event::End(bytes) = event else {
                 return Err(anyhow!("Unexpected XML event: {event:?}"));
             };
@@ -108,7 +108,7 @@ impl FromXml for X {
     type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        |(namespace, event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
             let mut res = X::default();
             let (_, end) = match event {
                 Event::Start(bytes) => (bytes, false),
@@ -120,7 +120,7 @@ impl FromXml for X {
             }
 
             loop {
-                let (namespace, event) = yield;
+                (namespace, event) = yield;
                 let bytes = match event {
                     Event::Start(bytes) => bytes,
                     Event::Empty(bytes) => bytes,

crates/proto-xmpp/src/roster.rs

@@ -1,47 +1,30 @@
 use quick_xml::events::{BytesStart, Event};
 
 use crate::xml::*;
-use anyhow::{anyhow as ffail, Result};
+use anyhow::{anyhow, Result};
+use quick_xml::name::ResolveResult;
 
 pub const XMLNS: &'static str = "jabber:iq:roster";
 
 #[derive(PartialEq, Eq, Debug)]
 pub struct RosterQuery;
 
-pub struct QueryParser(QueryParserInner);
-
-enum QueryParserInner {
-    Initial,
-    InQuery,
-}
-
-impl Parser for QueryParser {
-    type Output = Result<RosterQuery>;
-
-    fn consume<'a>(
-        self: Self,
-        namespace: quick_xml::name::ResolveResult,
-        event: &quick_xml::events::Event<'a>,
-    ) -> Continuation<Self, Self::Output> {
-        match self.0 {
-            QueryParserInner::Initial => match event {
-                Event::Start(_) => Continuation::Continue(QueryParser(QueryParserInner::InQuery)),
-                Event::Empty(_) => Continuation::Final(Ok(RosterQuery)),
-                _ => Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}"))),
-            },
-            QueryParserInner::InQuery => match event {
-                Event::End(_) => Continuation::Final(Ok(RosterQuery)),
-                _ => Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}"))),
-            },
-        }
-    }
-}
-
 impl FromXml for RosterQuery {
-    type P = QueryParser;
+    type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        QueryParser(QueryParserInner::Initial)
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+            match event {
+                Event::Start(_) => (),
+                Event::Empty(_) => return Ok(RosterQuery),
+                _ => return Err(anyhow!("Unexpected XML event: {event:?}")),
+            }
+            (namespace, event) = yield;
+            match event {
+                Event::End(_) => return Ok(RosterQuery),
+                _ => return Err(anyhow!("Unexpected XML event: {event:?}")),
+            }
+        }
     }
 }
 

crates/proto-xmpp/src/sasl.rs

@@ -1,7 +1,7 @@
 use std::borrow::Borrow;
 
 use anyhow::{anyhow, Result};
-use quick_xml::events::{BytesStart, Event};
+use quick_xml::events::{BytesEnd, BytesStart, Event};
 use quick_xml::{NsReader, Writer};
 use tokio::io::{AsyncBufRead, AsyncWrite};
 
@@ -74,3 +74,16 @@ impl Success {
         Ok(())
     }
 }
+
+pub struct Failure;
+impl Failure {
+    pub async fn write_xml(&self, writer: &mut Writer<impl AsyncWrite + Unpin>) -> Result<()> {
+        let event = BytesStart::new(r#"failure xmlns="urn:ietf:params:xml:ns:xmpp-sasl""#);
+        writer.write_event_async(Event::Start(event)).await?;
+        let event = BytesStart::new(r#"not-authorized"#);
+        writer.write_event_async(Event::Empty(event)).await?;
+        let event = BytesEnd::new(r#"failure"#);
+        writer.write_event_async(Event::End(event)).await?;
+        Ok(())
+    }
+}

crates/proto-xmpp/src/session.rs

@@ -2,46 +2,29 @@ use quick_xml::events::{BytesStart, Event};
 
 use crate::xml::*;
 use anyhow::{anyhow, Result};
+use quick_xml::name::ResolveResult;
 
 pub const XMLNS: &'static str = "urn:ietf:params:xml:ns:xmpp-session";
 
 #[derive(PartialEq, Eq, Debug)]
 pub struct Session;
 
-pub struct SessionParser(SessionParserInner);
-
-enum SessionParserInner {
-    Initial,
-    InSession,
-}
-
-impl Parser for SessionParser {
-    type Output = Result<Session>;
-
-    fn consume<'a>(
-        self: Self,
-        namespace: quick_xml::name::ResolveResult,
-        event: &quick_xml::events::Event<'a>,
-    ) -> Continuation<Self, Self::Output> {
-        match self.0 {
-            SessionParserInner::Initial => match event {
-                Event::Start(_) => Continuation::Continue(SessionParser(SessionParserInner::InSession)),
-                Event::Empty(_) => Continuation::Final(Ok(Session)),
-                _ => Continuation::Final(Err(anyhow!("Unexpected XML event: {event:?}"))),
-            },
-            SessionParserInner::InSession => match event {
-                Event::End(_) => Continuation::Final(Ok(Session)),
-                _ => Continuation::Final(Err(anyhow!("Unexpected XML event: {event:?}"))),
-            },
-        }
-    }
-}
-
 impl FromXml for Session {
-    type P = SessionParser;
+    type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        SessionParser(SessionParserInner::Initial)
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+            match event {
+                Event::Start(_) => (),
+                Event::Empty(_) => return Ok(Session),
+                _ => return Err(anyhow!("Unexpected XML event: {event:?}")),
+            }
+            (namespace, event) = yield;
+            match event {
+                Event::End(_) => return Ok(Session),
+                _ => return Err(anyhow!("Unexpected XML event: {event:?}")),
+            }
+        }
     }
 }
 

crates/proto-xmpp/src/stream.rs

@@ -24,7 +24,17 @@ impl ClientStreamStart {
         reader: &mut NsReader<impl AsyncBufRead + Unpin>,
         buf: &mut Vec<u8>,
     ) -> Result<ClientStreamStart> {
-        let incoming = skip_text!(reader, buf);
+        let mut incoming = skip_text!(reader, buf);
+        if let Event::Decl(bytes) = incoming {
+            // this is <?xml ...> header
+            if let Some(encoding) = bytes.encoding() {
+                let encoding = encoding?;
+                if &*encoding != b"UTF-8" {
+                    return Err(anyhow!("Unsupported encoding: {encoding:?}"));
+                }
+            }
+            incoming = skip_text!(reader, buf);
+        }
         if let Event::Start(e) = incoming {
             let (ns, local) = reader.resolve_element(e.name());
             if ns != ResolveResult::Bound(Namespace(XMLNS.as_bytes())) {

crates/proto-xmpp/src/streamerror.rs

@@ -0,0 +1,41 @@
+use crate::xml::ToXml;
+use quick_xml::events::{BytesEnd, BytesStart, Event};
+
+/// Stream error condition
+///
+/// [Spec](https://xmpp.org/rfcs/rfc6120.html#streams-error-conditions).
+pub enum StreamErrorKind {
+    /// The server has experienced a misconfiguration or other internal error that prevents it from servicing the stream.
+    InternalServerError,
+    /// The server is being shut down and all active streams are being closed.
+    SystemShutdown,
+}
+impl StreamErrorKind {
+    pub fn from_str(s: &str) -> Option<Self> {
+        match s {
+            "internal-server-error" => Some(Self::InternalServerError),
+            "system-shutdown" => Some(Self::SystemShutdown),
+            _ => None,
+        }
+    }
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            Self::InternalServerError => "internal-server-error",
+            Self::SystemShutdown => "system-shutdown",
+        }
+    }
+}
+
+pub struct StreamError {
+    pub kind: StreamErrorKind,
+}
+impl ToXml for StreamError {
+    fn serialize(&self, events: &mut Vec<Event<'static>>) {
+        events.push(Event::Start(BytesStart::new("stream:error")));
+        events.push(Event::Empty(BytesStart::new(format!(
+            r#"{} xmlns="urn:ietf:params:xml:ns:xmpp-streams""#,
+            self.kind.as_str()
+        ))));
+        events.push(Event::End(BytesEnd::new("stream:error")));
+    }
+}

crates/proto-xmpp/src/xml/ignore.rs

@@ -1,49 +1,35 @@
 use super::*;
-use derive_more::From;
 
 #[derive(Default, Debug, PartialEq, Eq)]
 pub struct Ignore;
 
-#[derive(From)]
-pub struct IgnoreParser(IgnoreParserInner);
-
-enum IgnoreParserInner {
-    Initial,
-    InTag { name: Vec<u8>, depth: u8 },
-}
-
-impl Parser for IgnoreParser {
-    type Output = Result<Ignore>;
-
-    fn consume<'a>(self: Self, _: ResolveResult, event: &Event<'a>) -> Continuation<Self, Self::Output> {
-        match self.0 {
-            IgnoreParserInner::Initial => match event {
-                Event::Start(bytes) => {
-                    let name = bytes.name().0.to_owned();
-                    Continuation::Continue(IgnoreParserInner::InTag { name, depth: 0 }.into())
-                }
-                Event::Empty(_) => Continuation::Final(Ok(Ignore)),
-                _ => Continuation::Final(Ok(Ignore)),
-            },
-            IgnoreParserInner::InTag { name, depth } => match event {
-                Event::End(bytes) if name == bytes.name().0 => {
-                    if depth == 0 {
-                        Continuation::Final(Ok(Ignore))
-                    } else {
-                        Continuation::Continue(IgnoreParserInner::InTag { name, depth: depth - 1 }.into())
-                    }
-                }
-                _ => Continuation::Continue(IgnoreParserInner::InTag { name, depth }.into()),
-            },
-        }
-    }
-}
-
 impl FromXml for Ignore {
-    type P = IgnoreParser;
+    type P = impl Parser<Output = Result<Self>>;
 
     fn parse() -> Self::P {
-        IgnoreParserInner::Initial.into()
+        |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+            let mut depth = match event {
+                Event::Start(bytes) => 0,
+                Event::Empty(_) => return Ok(Ignore),
+                _ => return Ok(Ignore),
+            };
+            loop {
+                (namespace, event) = yield;
+                match event {
+                    Event::End(_) => {
+                        if depth == 0 {
+                            return Ok(Ignore);
+                        } else {
+                            depth -= 1;
+                        }
+                    }
+                    Event::Start(_) => {
+                        depth += 1;
+                    }
+                    _ => (),
+                }
+            }
+        }
     }
 }
 

crates/proto-xmpp/src/xml/mod.rs

@@ -10,9 +10,38 @@ use anyhow::Result;
 mod ignore;
 pub use ignore::Ignore;
 
+/// Types which can be parsed from an XML input stream.
+///
+/// Example:
+/// ```
+/// #![feature(type_alias_impl_trait)]
+/// #![feature(impl_trait_in_assoc_type)]
+/// #![feature(coroutines)]
+/// # use proto_xmpp::xml::FromXml;
+/// # use quick_xml::events::Event;
+/// # use quick_xml::name::ResolveResult;
+/// # use proto_xmpp::xml::Parser;
+/// # use anyhow::Result;
+///
+/// struct MyStruct;
+/// impl FromXml for MyStruct {
+///     type P = impl Parser<Output = Result<Self>>;
+///
+///     fn parse() -> Self::P {
+///         |(mut namespace, mut event): (ResolveResult<'static>, &'static Event<'static>)| -> Result<Self> {
+///             (namespace, event) = yield;
+///             Ok(MyStruct)
+///         }
+///     }
+/// }
+/// ```
 pub trait FromXml: Sized {
+    /// The type of parser instances.
+    ///
+    /// If the result type of the [parse] is anonymous, this type member can be defined by using `impl Trait`.
     type P: Parser<Output = Result<Self>>;
 
+    /// Creates a new instance of a parser with an initial state.
     fn parse() -> Self::P;
 }
 
@@ -25,9 +54,18 @@ pub trait FromXmlTag: FromXml {
     const NS: &'static str;
 }
 
+/// A stateful parser instance which consumes XML events until the parsing is complete.
+///
+/// Usually implemented with the experimental coroutine syntax, which yields to consume the next XML event,
+/// and returns the final result when the parsing is done.
 pub trait Parser: Sized {
     type Output;
 
+    /// Advance the parsing by one XML event.
+    ///
+    /// This method consumes `self`, but if the parsing is incomplete,
+    /// it will return the next state of the parser in the returned result.
+    /// Otherwise, it will return the final result of parsing.
     fn consume<'a>(self: Self, namespace: ResolveResult, event: &Event<'a>) -> Continuation<Self, Self::Output>;
 }
 
@@ -50,8 +88,11 @@ where
     }
 }
 
+/// The result of a single parser iteration.
 pub enum Continuation<Parser, Res> {
+    /// The parsing is complete and the final result is available.
     Final(Res),
+    /// The parsing is not complete and more XML events are required.
     Continue(Parser),
 }
 
@@ -89,8 +130,8 @@ macro_rules! delegate_parsing {
                 Continuation::Final(Ok(res)) => break Ok(res.into()),
                 Continuation::Final(Err(err)) => break Err(err),
                 Continuation::Continue(p) => {
-                    let (namespace, event) = yield;
+                    ($namespace, $event) = yield;
-                    parser = p.consume(namespace, event);
+                    parser = p.consume($namespace, $event);
                 }
             }
         }

crates/sasl/src/lib.rs

@@ -79,10 +79,6 @@ mod test {
     fn test_fail_if_size_less_then_3() {
         let orig = b"login\x00pass";
         let encoded = general_purpose::STANDARD.encode(orig);
-        let expected = AuthBody {
-            login: "login".to_string(),
-            password: "pass".to_string(),
-        };
         let result = AuthBody::from_str(encoded.as_bytes());
 
         assert!(result.is_err());
@@ -92,10 +88,6 @@ mod test {
     fn test_fail_if_size_greater_then_3() {
         let orig = b"first\x00login\x00pass\x00other";
         let encoded = general_purpose::STANDARD.encode(orig);
-        let expected = AuthBody {
-            login: "login".to_string(),
-            password: "pass".to_string(),
-        };
         let result = AuthBody::from_str(encoded.as_bytes());
 
         assert!(result.is_err());

docs/cheatsheet.md

@@ -8,11 +8,12 @@ Some useful commands for development and testing.
 
 Following commands require `OpenSSL` to be installed. It is provided as `openssl` package in Arch Linux.
 
-Generate self-signed TLS certificate:
+Generate self-signed TLS certificate. Mind the common name (CN) field, it should match the domain name of the server.
+Example for localhost:
 
     openssl req -x509 -newkey rsa:4096 -sha256 -days 365 -noenc \
     -keyout certs/xmpp.key -out certs/xmpp.pem \
-    -subj "/CN=example.com"
+    -subj "/CN=localhost"
 
 Print content of a TLS certificate:
 
@@ -35,4 +36,4 @@ Connecting:
 Password should be the same as in storage.
 Example:
 
-    /connect -nocap 127.0.0.1 6667 parolchik1 kek
+    /connect -nocap 127.0.0.1 6667 parolchik1 kek

docs/running.md

@@ -19,9 +19,15 @@ server_name = "irc.localhost"
 listen_on = "127.0.0.1:5222"
 cert = "./certs/xmpp.pem"
 key = "./certs/xmpp.key"
+hostname = "localhost"
 
 [storage]
 db_path = "db.sqlite"
+
+[tracing]
+# otlp grpc endpoint
+endpoint = "http://jaeger:4317"
+service_name = "lavina"
 ```
 
 ## With Docker Compose
@@ -40,6 +46,15 @@ services:
       - '5222:5222'  # xmpp
       - '6667:6667'  # irc non-tls
       - '127.0.0.1:1380:8080' # management http (private)
+  # if you want to observe traces
+  jaeger:
+    image: "jaegertracing/all-in-one:1.56"
+    ports:
+      - "16686:16686" # web ui
+      - "4317:4317"   # grpc ingest endpoint
+    environment:
+      - COLLECTOR_OTLP_ENABLED=true
+      - SPAN_STORAGE_TYPE=memory
 ```
 
 ## With Cargo

rust-toolchain

@@ -1 +1 @@
-nightly-2024-03-20
+nightly-2024-04-19

src/http.rs

@@ -12,10 +12,13 @@ use prometheus::{Encoder, Registry as MetricsRegistry, TextEncoder};
 use serde::{Deserialize, Serialize};
 use tokio::net::TcpListener;
 
+use lavina_core::auth::{Authenticator, UpdatePasswordResult};
+use lavina_core::player::{PlayerId, PlayerRegistry};
 use lavina_core::prelude::*;
 use lavina_core::repo::Storage;
 use lavina_core::room::RoomRegistry;
 use lavina_core::terminator::Terminator;
+use lavina_core::LavinaCore;
 
 use mgmt_api::*;
 
@@ -29,20 +32,20 @@ pub struct ServerConfig {
 pub async fn launch(
     config: ServerConfig,
     metrics: MetricsRegistry,
-    rooms: RoomRegistry,
+    core: LavinaCore,
     storage: Storage,
 ) -> Result<Terminator> {
     log::info!("Starting the http service");
     let listener = TcpListener::bind(config.listen_on).await?;
     log::debug!("Listener started");
-    let terminator = Terminator::spawn(|rx| main_loop(listener, metrics, rooms, storage, rx.map(|_| ())));
+    let terminator = Terminator::spawn(|rx| main_loop(listener, metrics, core, storage, rx.map(|_| ())));
     Ok(terminator)
 }
 
 async fn main_loop(
     listener: TcpListener,
     metrics: MetricsRegistry,
-    rooms: RoomRegistry,
+    core: LavinaCore,
     storage: Storage,
     termination: impl Future<Output = ()>,
 ) -> Result<()> {
@@ -55,13 +58,13 @@ async fn main_loop(
                 let (stream, _) = result?;
                 let stream = TokioIo::new(stream);
                 let metrics = metrics.clone();
-                let rooms = rooms.clone();
+                let core = core.clone();
                 let storage = storage.clone();
                 tokio::task::spawn(async move {
                     let registry = metrics.clone();
-                    let rooms = rooms.clone();
+                    let core = core.clone();
                     let storage = storage.clone();
-                    let server = http1::Builder::new().serve_connection(stream, service_fn(move |r| route(registry.clone(), rooms.clone(), storage.clone(), r)));
+                    let server = http1::Builder::new().serve_connection(stream, service_fn(move |r| route(registry.clone(), core.clone(), storage.clone(), r)));
                     if let Err(err) = server.await {
                         tracing::error!("Error serving connection: {:?}", err);
                     }
@@ -75,16 +78,17 @@ async fn main_loop(
 
 async fn route(
     registry: MetricsRegistry,
-    rooms: RoomRegistry,
+    core: LavinaCore,
     storage: Storage,
     request: Request<hyper::body::Incoming>,
 ) -> HttpResult<Response<Full<Bytes>>> {
     let res = match (request.method(), request.uri().path()) {
         (&Method::GET, "/metrics") => endpoint_metrics(registry),
-        (&Method::GET, "/rooms") => endpoint_rooms(rooms).await,
+        (&Method::GET, "/rooms") => endpoint_rooms(core.rooms).await,
         (&Method::POST, paths::CREATE_PLAYER) => endpoint_create_player(request, storage).await.or5xx(),
+        (&Method::POST, paths::STOP_PLAYER) => endpoint_stop_player(request, core.players).await.or5xx(),
         (&Method::POST, paths::SET_PASSWORD) => endpoint_set_password(request, storage).await.or5xx(),
-        _ => not_found(),
+        _ => endpoint_not_found(),
     };
     Ok(res)
 }
@@ -96,6 +100,7 @@ fn endpoint_metrics(registry: MetricsRegistry) -> Response<Full<Bytes>> {
     Response::new(Full::new(Bytes::from(buffer)))
 }
 
+#[tracing::instrument(skip_all)]
 async fn endpoint_rooms(rooms: RoomRegistry) -> Response<Full<Bytes>> {
     // TODO introduce management API types independent from core-domain types
     // TODO remove `Serialize` implementations from all core-domain types
@@ -103,20 +108,14 @@ async fn endpoint_rooms(rooms: RoomRegistry) -> Response<Full<Bytes>> {
     Response::new(room_list)
 }
 
+#[tracing::instrument(skip_all)]
 async fn endpoint_create_player(
     request: Request<hyper::body::Incoming>,
     mut storage: Storage,
 ) -> Result<Response<Full<Bytes>>> {
     let str = request.collect().await?.to_bytes();
     let Ok(res) = serde_json::from_slice::<CreatePlayerRequest>(&str[..]) else {
-        let payload = ErrorResponse {
+        return Ok(malformed_request());
-            code: errors::MALFORMED_REQUEST,
-            message: "The request payload contains incorrect JSON value",
-        }
-        .to_body();
-        let mut response = Response::new(payload);
-        *response.status_mut() = StatusCode::BAD_REQUEST;
-        return Ok(response);
     };
     storage.create_user(&res.name).await?;
     log::info!("Player {} created", res.name);
@@ -125,38 +124,48 @@ async fn endpoint_create_player(
     Ok(response)
 }
 
-async fn endpoint_set_password(
+#[tracing::instrument(skip_all)]
+async fn endpoint_stop_player(
     request: Request<hyper::body::Incoming>,
-    mut storage: Storage,
+    players: PlayerRegistry,
 ) -> Result<Response<Full<Bytes>>> {
     let str = request.collect().await?.to_bytes();
-    let Ok(res) = serde_json::from_slice::<ChangePasswordRequest>(&str[..]) else {
+    let Ok(res) = serde_json::from_slice::<StopPlayerRequest>(&str[..]) else {
-        let payload = ErrorResponse {
+        return Ok(malformed_request());
-            code: errors::MALFORMED_REQUEST,
-            message: "The request payload contains incorrect JSON value",
-        }
-        .to_body();
-        let mut response = Response::new(payload);
-        *response.status_mut() = StatusCode::BAD_REQUEST;
-        return Ok(response);
     };
-    let Some(_) = storage.set_password(&res.player_name, &res.password).await? else {
+    let Ok(player_id) = PlayerId::from(res.name) else {
-        let payload = ErrorResponse {
+        return Ok(player_not_found());
-            code: errors::PLAYER_NOT_FOUND,
+    };
-            message: "No such player exists",
+    let Some(()) = players.stop_player(&player_id).await? else {
-        }
+        return Ok(player_not_found());
-        .to_body();
-        let mut response = Response::new(payload);
-        *response.status_mut() = StatusCode::UNPROCESSABLE_ENTITY;
-        return Ok(response);
     };
-    log::info!("Password changed for player {}", res.player_name);
     let mut response = Response::new(Full::<Bytes>::default());
     *response.status_mut() = StatusCode::NO_CONTENT;
     Ok(response)
 }
 
-pub fn not_found() -> Response<Full<Bytes>> {
+#[tracing::instrument(skip_all)]
+async fn endpoint_set_password(
+    request: Request<hyper::body::Incoming>,
+    storage: Storage,
+) -> Result<Response<Full<Bytes>>> {
+    let str = request.collect().await?.to_bytes();
+    let Ok(res) = serde_json::from_slice::<ChangePasswordRequest>(&str[..]) else {
+        return Ok(malformed_request());
+    };
+    let verdict = Authenticator::new(&storage).set_password(&res.player_name, &res.password).await?;
+    match verdict {
+        UpdatePasswordResult::PasswordUpdated => {}
+        UpdatePasswordResult::UserNotFound => {
+            return Ok(player_not_found());
+        }
+    }
+    let mut response = Response::new(Full::<Bytes>::default());
+    *response.status_mut() = StatusCode::NO_CONTENT;
+    Ok(response)
+}
+
+fn endpoint_not_found() -> Response<Full<Bytes>> {
     let payload = ErrorResponse {
         code: errors::INVALID_PATH,
         message: "The path does not exist",
@@ -168,25 +177,47 @@ pub fn not_found() -> Response<Full<Bytes>> {
     response
 }
 
+fn player_not_found() -> Response<Full<Bytes>> {
+    let payload = ErrorResponse {
+        code: errors::PLAYER_NOT_FOUND,
+        message: "No such player exists",
+    }
+    .to_body();
+    let mut response = Response::new(payload);
+    *response.status_mut() = StatusCode::UNPROCESSABLE_ENTITY;
+    response
+}
+
+fn malformed_request() -> Response<Full<Bytes>> {
+    let payload = ErrorResponse {
+        code: errors::MALFORMED_REQUEST,
+        message: "The request payload contains incorrect JSON value",
+    }
+    .to_body();
+
+    let mut response = Response::new(payload);
+    *response.status_mut() = StatusCode::BAD_REQUEST;
+    return response;
+}
+
 trait Or5xx {
     fn or5xx(self) -> Response<Full<Bytes>>;
 }
+
 impl Or5xx for Result<Response<Full<Bytes>>> {
     fn or5xx(self) -> Response<Full<Bytes>> {
-        match self {
+        self.unwrap_or_else(|e| {
-            Ok(e) => e,
+            let mut response = Response::new(Full::new(e.to_string().into()));
-            Err(e) => {
+            *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
-                let mut response = Response::new(Full::new(e.to_string().into()));
+            response
-                *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
+        })
-                response
-            }
-        }
     }
 }
 
 trait ToBody {
     fn to_body(&self) -> Full<Bytes>;
 }
+
 impl<T> ToBody for T
 where
     T: Serialize,

src/main.rs

@@ -6,13 +6,21 @@ use std::path::Path;
 use clap::Parser;
 use figment::providers::Format;
 use figment::{providers::Toml, Figment};
+use opentelemetry::KeyValue;
+use opentelemetry_otlp::WithExportConfig;
+use opentelemetry_sdk::trace::{BatchConfig, RandomIdGenerator, Sampler};
+use opentelemetry_sdk::{runtime, Resource};
+use opentelemetry_semantic_conventions::resource::SERVICE_NAME;
+use opentelemetry_semantic_conventions::SCHEMA_URL;
 use prometheus::Registry as MetricsRegistry;
 use serde::Deserialize;
+use tracing_opentelemetry::OpenTelemetryLayer;
+use tracing_subscriber::fmt::Subscriber;
+use tracing_subscriber::prelude::*;
 
-use lavina_core::player::PlayerRegistry;
 use lavina_core::prelude::*;
 use lavina_core::repo::Storage;
-use lavina_core::room::RoomRegistry;
+use lavina_core::LavinaCore;
 
 #[derive(Deserialize, Debug)]
 struct ServerConfig {
@@ -20,6 +28,13 @@ struct ServerConfig {
     irc: projection_irc::ServerConfig,
     xmpp: projection_xmpp::ServerConfig,
     storage: lavina_core::repo::StorageConfig,
+    tracing: Option<TracingConfig>,
+}
+
+#[derive(Deserialize, Debug)]
+struct TracingConfig {
+    endpoint: String,
+    service_name: String,
 }
 
 #[derive(Parser)]
@@ -37,9 +52,9 @@ fn load_config() -> Result<ServerConfig> {
 
 #[tokio::main]
 async fn main() -> Result<()> {
-    set_up_logging()?;
     let sleep = ctrl_c()?;
     let config = load_config()?;
+    set_up_logging(&config.tracing)?;
 
     tracing::info!("Booting up");
     tracing::info!("Loaded config: {config:?}");
@@ -48,28 +63,14 @@ async fn main() -> Result<()> {
         irc: irc_config,
         xmpp: xmpp_config,
         storage: storage_config,
+        tracing: _,
     } = config;
-    let mut metrics = MetricsRegistry::new();
+    let metrics = MetricsRegistry::new();
     let storage = Storage::open(storage_config).await?;
-    let rooms = RoomRegistry::new(&mut metrics, storage.clone())?;
+    let core = LavinaCore::new(metrics.clone(), storage.clone()).await?;
-    let mut players = PlayerRegistry::empty(rooms.clone(), &mut metrics)?;
+    let telemetry_terminator = http::launch(telemetry_config, metrics.clone(), core.clone(), storage.clone()).await?;
-    let telemetry_terminator = http::launch(telemetry_config, metrics.clone(), rooms.clone(), storage.clone()).await?;
+    let irc = projection_irc::launch(irc_config, core.clone(), metrics.clone(), storage.clone()).await?;
-    let irc = projection_irc::launch(
+    let xmpp = projection_xmpp::launch(xmpp_config, core.clone(), metrics.clone(), storage.clone()).await?;
-        irc_config,
-        players.clone(),
-        rooms.clone(),
-        metrics.clone(),
-        storage.clone(),
-    )
-    .await?;
-    let xmpp = projection_xmpp::launch(
-        xmpp_config,
-        players.clone(),
-        rooms.clone(),
-        metrics.clone(),
-        storage.clone(),
-    )
-    .await?;
     tracing::info!("Started");
 
     sleep.await;
@@ -78,10 +79,7 @@ async fn main() -> Result<()> {
     xmpp.terminate().await?;
     irc.terminate().await?;
     telemetry_terminator.terminate().await?;
-    players.shutdown_all().await?;
+    core.shutdown().await?;
-    drop(players);
-    drop(rooms);
-    storage.close().await?;
     tracing::info!("Shutdown complete");
     Ok(())
 }
@@ -106,7 +104,44 @@ fn ctrl_c() -> Result<impl Future<Output = ()>> {
     Ok(recv(chan))
 }
 
-fn set_up_logging() -> Result<()> {
+fn set_up_logging(tracing_config: &Option<TracingConfig>) -> Result<()> {
-    tracing_subscriber::fmt::init();
+    let subscriber = tracing_subscriber::registry().with(tracing_subscriber::fmt::layer());
+
+    let targets = {
+        use std::{env, str::FromStr};
+        use tracing_subscriber::filter::Targets;
+        match env::var("RUST_LOG") {
+            Ok(var) => Targets::from_str(&var)
+                .map_err(|e| {
+                    eprintln!("Ignoring `RUST_LOG={:?}`: {}", var, e);
+                })
+                .unwrap_or_default(),
+            Err(env::VarError::NotPresent) => Targets::new().with_default(Subscriber::DEFAULT_MAX_LEVEL),
+            Err(e) => {
+                eprintln!("Ignoring `RUST_LOG`: {}", e);
+                Targets::new().with_default(Subscriber::DEFAULT_MAX_LEVEL)
+            }
+        }
+    };
+    if let Some(config) = tracing_config {
+        let trace_config = opentelemetry_sdk::trace::Config::default()
+            .with_sampler(Sampler::ParentBased(Box::new(Sampler::TraceIdRatioBased(1.0))))
+            .with_id_generator(RandomIdGenerator::default())
+            .with_resource(Resource::from_schema_url(
+                [KeyValue::new(SERVICE_NAME, config.service_name.to_string())],
+                SCHEMA_URL,
+            ));
+        let trace_exporter = opentelemetry_otlp::new_exporter().tonic().with_endpoint(&config.endpoint);
+        let tracer = opentelemetry_otlp::new_pipeline()
+            .tracing()
+            .with_trace_config(trace_config)
+            .with_batch_config(BatchConfig::default())
+            .with_exporter(trace_exporter)
+            .install_batch(runtime::Tokio)?;
+        let subscriber = subscriber.with(OpenTelemetryLayer::new(tracer));
+        targets.with_subscriber(subscriber).try_init()?;
+    } else {
+        targets.with_subscriber(subscriber).try_init()?;
+    }
     Ok(())
 }