Release v1.0.0

.drone.yml

@@ -0,0 +1,12 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+  - name: cargo_check
+    image: rust
+    commands:
+      - rustup component add clippy
+      - cargo clippy -- -D warnings
+      - cargo test

Cargo.lock

@@ -214,6 +214,20 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "actix-ws"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a3a1fb4f9f2794b0aadaf2ba5f14a6f034c7e86957b458c506a8cb75953f2d99"
+dependencies = [
+ "actix-codec",
+ "actix-http",
+ "actix-web",
+ "bytestring",
+ "futures-core",
+ "tokio",
+]
+
 [[package]]
 name = "addr2line"
 version = "0.24.2"
@@ -2035,6 +2049,7 @@ dependencies = [
  "actix-remote-ip",
  "actix-session",
  "actix-web",
+ "actix-ws",
  "anyhow",
  "askama",
  "base16ct",
@@ -2057,6 +2072,7 @@ dependencies = [
  "serde_json",
  "sha2 0.11.0-pre.4",
  "thiserror 2.0.11",
+ "tokio",
  "urlencoding",
  "uuid",
 ]
@@ -3490,9 +3506,21 @@ dependencies = [
  "pin-project-lite",
  "signal-hook-registry",
  "socket2",
+ "tokio-macros",
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tokio-native-tls"
 version = "0.3.1"

Cargo.toml

@@ -24,10 +24,12 @@ urlencoding = "2.1.3"
 uuid = { version = "1.12.1", features = ["v4", "serde"] }
 ipnet = { version = "2.11.0", features = ["serde"] }
 chrono = "0.4.39"
-futures-util = "0.3.31"
-jwt-simple = { version = "0.12.11", default-features=false, features=["pure-rust"] }
+futures-util = { version = "0.3.31", features = ["sink"] }
+jwt-simple = { version = "0.12.11", default-features = false, features = ["pure-rust"] }
 actix-remote-ip = "0.1.0"
 bytes = "1.9.0"
 sha2 = "0.11.0-pre.4"
 base16ct = "0.2.0"
 ruma = { version = "0.12.0", features = ["client-api-c", "client-ext-client-api", "client-hyper-native-tls", "rand"] }
+actix-ws = "0.3.0"
+tokio = { version = "1.43.0", features = ["rt", "time", "macros", "rt-multi-thread"] }

Dockerfile

@@ -0,0 +1,10 @@
+FROM debian:bookworm-slim
+
+RUN apt-get update \
+  && apt-get install -y libssl3 \
+  && rm -rf /var/lib/apt/lists/*
+
+COPY matrix_gateway /usr/local/bin/matrix_gateway
+
+ENTRYPOINT ["/usr/local/bin/matrix_gateway"]
+

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
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+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
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+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

Makefile

@@ -0,0 +1,14 @@
+DOCKER_TEMP_DIR=temp
+
+all: gateway
+
+gateway:
+	cargo clippy -- -D warnings && cargo build --release
+
+gateway_docker: gateway
+	rm -rf $(DOCKER_TEMP_DIR)
+	mkdir $(DOCKER_TEMP_DIR)
+	cp target/release/matrix_gateway $(DOCKER_TEMP_DIR)
+	docker build -t pierre42100/matrix_gateway -f ./Dockerfile "$(DOCKER_TEMP_DIR)"
+	rm -rf $(DOCKER_TEMP_DIR)
+

README.md

@@ -1,6 +1,20 @@
 # Matrix Gateway
-WIP project
+[![Build Status](https://drone.communiquons.org/api/badges/pierre/MatrixGW/status.svg)](https://drone.communiquons.org/pierre/MatrixGW)
 
+Project that expose a simple API to make use of Matrix API. It acts as a Matrix client (like Element for example)
+
+**Known limitations**:
+
+- Supports only a limited subset of Matrix API
+- Does not support E2E encryption
+- Does not support spaces
+
+Project written in Rust. Releases are published on Docker Hub.
+
+## Docker image options
+```bash
+docker run --rm -it docker.io/pierre42100/matrix_gateway --help
+```
 
 ## Setup dev environment
 ```
@@ -20,3 +34,4 @@ Auto-created Matrix accounts:
 * `user1` : `user1`
 
 Minio administration credentials: `minioadmin` : `minioadmin`
+

assets/ws_debug.js

@@ -0,0 +1,68 @@
+let ws;
+
+const JS_MESSAGE = "JS code";
+const IN_MESSAGE = "Incoming";
+
+/**
+ * Log message
+ */
+function log(src, txt) {
+    const target = document.getElementById("ws_log");
+    const msg = document.createElement("div");
+    msg.className = "message";
+    msg.innerHTML = `<div class='type'>${src}</div><div>${txt}</div>`
+    target.insertBefore(msg, target.firstChild);
+}
+
+/**
+ * Set the state of the WebSocket
+ */
+function setState(state) {
+    document.getElementById("state").innerText = state;
+}
+
+/**
+ * Initialize WebSocket connection
+ */
+function connect() {
+    disconnect();
+    log(JS_MESSAGE, "Initialize connection...");
+    ws = new WebSocket("/api/ws");
+    setState("Connecting...");
+    ws.onopen = function () {
+        log(JS_MESSAGE, "Connected to WebSocket !");
+        setState("Connected");
+    }
+    ws.onmessage = function (event) {
+        log(IN_MESSAGE, event.data);
+    }
+    ws.onclose = function () {
+        log(JS_MESSAGE, "Disconnected from WebSocket !");
+        setState("Disconnected");
+    }
+    ws.onerror = function (event) {
+        console.error("WS Error!", event);
+        log(JS_MESSAGE, `Error with websocket! ${event}`);
+        setState("Error");
+    }
+}
+
+/**
+ * Close WebSocket connection
+ */
+function disconnect() {
+    if (ws && ws.readyState === WebSocket.OPEN) {
+        log(JS_MESSAGE, "Close connection...");
+        ws.close();
+    }
+
+    setState("Disconnected");
+    ws = undefined;
+}
+
+/**
+ * Clear WS logs
+ */
+function clearLogs() {
+    document.getElementById("ws_log").innerHTML = "";
+}

renovate.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "packageRules": [
+    {
+      "matchUpdateTypes": ["major", "minor", "patch"],
+      "automerge": true
+    }
+  ]
+}

src/broadcast_messages.rs

@@ -0,0 +1,46 @@
+use crate::sync_client::SyncClientID;
+use crate::user::{APIClientID, UserID};
+use ruma::api::client::sync::sync_events::v3::{GlobalAccountData, Presence, Rooms, ToDevice};
+use ruma::api::client::sync::sync_events::DeviceLists;
+
+#[derive(Debug, Clone, serde::Deserialize, serde::Serialize)]
+pub struct SyncEvent {
+    /// Updates to rooms.
+    #[serde(default, skip_serializing_if = "Rooms::is_empty")]
+    pub rooms: Rooms,
+
+    /// Updates to the presence status of other users.
+    #[serde(default, skip_serializing_if = "Presence::is_empty")]
+    pub presence: Presence,
+
+    /// The global private data created by this user.
+    #[serde(default, skip_serializing_if = "GlobalAccountData::is_empty")]
+    pub account_data: GlobalAccountData,
+
+    /// Messages sent directly between devices.
+    #[serde(default, skip_serializing_if = "ToDevice::is_empty")]
+    pub to_device: ToDevice,
+
+    /// Information on E2E device updates.
+    ///
+    /// Only present on an incremental sync.
+    #[serde(default, skip_serializing_if = "DeviceLists::is_empty")]
+    pub device_lists: DeviceLists,
+}
+
+/// Broadcast messages
+#[derive(Debug, Clone)]
+pub enum BroadcastMessage {
+    /// Request to close the session of a specific client
+    CloseClientSession(APIClientID),
+    /// Close all the sessions of a given user
+    CloseAllUserSessions(UserID),
+    /// Stop sync client for a given user
+    StopSyncTaskForUser(UserID),
+    /// Start sync client for a given user (if not already running)
+    StartSyncTaskForUser(UserID),
+    /// Stop a client with a given client ID
+    StopSyncClient(SyncClientID),
+    /// Propagate a new sync event
+    SyncEvent(UserID, SyncEvent),
+}

src/constants.rs

@@ -1,3 +1,5 @@
+use std::time::Duration;
+
 /// Session key for OpenID login state
 pub const STATE_KEY: &str = "oidc-state";
 
@@ -6,3 +8,11 @@ pub const USER_SESSION_KEY: &str = "user";
 
 /// Token length
 pub const TOKEN_LEN: usize = 20;
+
+/// How often heartbeat pings are sent.
+///
+/// Should be half (or less) of the acceptable client timeout.
+pub const WS_HEARTBEAT_INTERVAL: Duration = Duration::from_secs(5);
+
+/// How long before lack of client response causes a timeout.
+pub const WS_CLIENT_TIMEOUT: Duration = Duration::from_secs(10);

src/extractors/client_auth.rs

@@ -1,7 +1,7 @@
 use crate::constants::USER_SESSION_KEY;
 use crate::server::HttpFailure;
 use crate::user::{APIClient, APIClientID, RumaClient, User, UserConfig, UserID};
-use crate::utils::curr_time;
+use crate::utils::base_utils::curr_time;
 use actix_remote_ip::RemoteIP;
 use actix_session::Session;
 use actix_web::dev::Payload;

src/lib.rs

@@ -1,6 +1,8 @@
 pub mod app_config;
+pub mod broadcast_messages;
 pub mod constants;
 pub mod extractors;
 pub mod server;
+pub mod sync_client;
 pub mod user;
 pub mod utils;

src/main.rs

@@ -4,10 +4,12 @@ use actix_session::{storage::RedisSessionStore, SessionMiddleware};
 use actix_web::cookie::Key;
 use actix_web::{web, App, HttpServer};
 use matrix_gateway::app_config::AppConfig;
+use matrix_gateway::broadcast_messages::BroadcastMessage;
 use matrix_gateway::server::{api, web_ui};
+use matrix_gateway::sync_client;
 use matrix_gateway::user::UserConfig;
 
-#[actix_web::main]
+#[tokio::main]
 async fn main() -> std::io::Result<()> {
     env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
 
@@ -21,6 +23,11 @@ async fn main() -> std::io::Result<()> {
         .await
         .expect("Failed to connect to Redis!");
 
+    let (ws_tx, _) = tokio::sync::broadcast::channel::<BroadcastMessage>(16);
+
+    // Launch sync manager
+    tokio::spawn(sync_client::sync_client_manager(ws_tx.clone()));
+
     log::info!(
         "Starting to listen on {} for {}",
         AppConfig::get().listen_address,
@@ -38,17 +45,35 @@ async fn main() -> std::io::Result<()> {
             .app_data(web::Data::new(RemoteIPConfig {
                 proxy: AppConfig::get().proxy_ip.clone(),
             }))
+            .app_data(web::Data::new(ws_tx.clone()))
             // Web configuration routes
             .route("/assets/{tail:.*}", web::get().to(web_ui::static_file))
             .route("/", web::get().to(web_ui::home))
             .route("/", web::post().to(web_ui::home))
             .route("/oidc_cb", web::get().to(web_ui::oidc_cb))
             .route("/sign_out", web::get().to(web_ui::sign_out))
+            .route("/ws_debug", web::get().to(web_ui::ws_debug))
             // API routes
             .route("/api", web::get().to(api::api_home))
             .route("/api", web::post().to(api::api_home))
             .route("/api/account/whoami", web::get().to(api::account::who_am_i))
+            .route("/api/room/joined", web::get().to(api::room::joined_rooms))
+            .route("/api/room/{room_id}", web::get().to(api::room::info))
+            .route(
+                "/api/media/{server_name}/{media_id}/download",
+                web::get().to(api::media::download),
+            )
+            .route(
+                "/api/media/{server_name}/{media_id}/thumbnail",
+                web::get().to(api::media::thumbnail),
+            )
+            .route(
+                "/api/profile/{user_id}",
+                web::get().to(api::profile::get_profile),
+            )
+            .service(web::resource("/api/ws").route(web::get().to(api::ws::ws)))
     })
+    .workers(4)
     .bind(&AppConfig::get().listen_address)?
     .run()
     .await

src/server/api/media.rs

@@ -0,0 +1,59 @@
+use crate::extractors::client_auth::APIClientAuth;
+use crate::server::HttpResult;
+use actix_web::{web, HttpResponse};
+use ruma::api::client::media;
+use ruma::{OwnedServerName, UInt};
+
+#[derive(serde::Deserialize)]
+pub struct MediaInfoInPath {
+    server_name: OwnedServerName,
+    media_id: String,
+}
+
+/// Download a media
+#[allow(deprecated)]
+pub async fn download(auth: APIClientAuth, path: web::Path<MediaInfoInPath>) -> HttpResult {
+    let res = auth
+        .send_request(media::get_content::v3::Request::new(
+            path.media_id.clone(),
+            path.server_name.clone(),
+        ))
+        .await?;
+
+    let mut http_res = HttpResponse::Ok();
+    if let Some(content_type) = res.content_type {
+        http_res.content_type(content_type);
+    }
+
+    Ok(http_res.body(res.file))
+}
+
+#[derive(serde::Deserialize)]
+pub struct MediaThumbnailQuery {
+    width: Option<UInt>,
+    height: Option<UInt>,
+}
+
+/// Get a media thumbnail
+#[allow(deprecated)]
+pub async fn thumbnail(
+    auth: APIClientAuth,
+    path: web::Path<MediaInfoInPath>,
+    query: web::Query<MediaThumbnailQuery>,
+) -> HttpResult {
+    let res = auth
+        .send_request(media::get_content_thumbnail::v3::Request::new(
+            path.media_id.clone(),
+            path.server_name.clone(),
+            query.width.unwrap_or(UInt::new(500).unwrap()),
+            query.height.unwrap_or(UInt::new(500).unwrap()),
+        ))
+        .await?;
+
+    let mut http_res = HttpResponse::Ok();
+    if let Some(content_type) = res.content_type {
+        http_res.content_type(content_type);
+    }
+
+    Ok(http_res.body(res.file))
+}

src/server/api/mod.rs

@@ -3,6 +3,10 @@ use crate::server::HttpResult;
 use actix_web::HttpResponse;
 
 pub mod account;
+pub mod media;
+pub mod profile;
+pub mod room;
+pub mod ws;
 
 /// API Home route
 pub async fn api_home(auth: APIClientAuth) -> HttpResult {

src/server/api/profile.rs

@@ -0,0 +1,29 @@
+use crate::extractors::client_auth::APIClientAuth;
+use crate::server::HttpResult;
+use crate::utils::matrix_utils::ApiMxcURI;
+use actix_web::{web, HttpResponse};
+use ruma::api::client::profile;
+use ruma::OwnedUserId;
+
+#[derive(serde::Deserialize)]
+pub struct UserIDInPath {
+    user_id: OwnedUserId,
+}
+
+#[derive(serde::Serialize)]
+struct ProfileResponse {
+    display_name: Option<String>,
+    avatar: Option<ApiMxcURI>,
+}
+
+/// Get user profile
+pub async fn get_profile(auth: APIClientAuth, path: web::Path<UserIDInPath>) -> HttpResult {
+    let res = auth
+        .send_request(profile::get_profile::v3::Request::new(path.user_id.clone()))
+        .await?;
+
+    Ok(HttpResponse::Ok().json(ProfileResponse {
+        display_name: res.displayname,
+        avatar: res.avatar_url.map(ApiMxcURI),
+    }))
+}

src/server/api/room.rs

@@ -0,0 +1,81 @@
+use crate::extractors::client_auth::APIClientAuth;
+use crate::server::{HttpFailure, HttpResult};
+use crate::utils::matrix_utils::ApiMxcURI;
+use actix_web::{web, HttpResponse};
+use ruma::api::client::{membership, state};
+use ruma::events::StateEventType;
+use ruma::{OwnedMxcUri, OwnedRoomId};
+use serde::de::DeserializeOwned;
+
+#[derive(serde::Serialize)]
+struct GetRoomsMembershipsResponse {
+    rooms: Vec<OwnedRoomId>,
+}
+
+/// Get the list of rooms the user has joined
+pub async fn joined_rooms(auth: APIClientAuth) -> HttpResult {
+    let res = auth
+        .send_request(membership::joined_rooms::v3::Request::default())
+        .await?;
+
+    Ok(HttpResponse::Ok().json(GetRoomsMembershipsResponse {
+        rooms: res.joined_rooms,
+    }))
+}
+
+#[derive(serde::Deserialize)]
+pub struct RoomIDInPath {
+    room_id: OwnedRoomId,
+}
+
+#[derive(serde::Serialize)]
+struct GetRoomInfoResponse {
+    name: Option<String>,
+    avatar: Option<ApiMxcURI>,
+}
+
+/// Get a room information
+async fn get_room_info<E: DeserializeOwned>(
+    auth: &APIClientAuth,
+    room_id: OwnedRoomId,
+    event_type: StateEventType,
+    field: &str,
+) -> anyhow::Result<Option<E>, HttpFailure> {
+    let res = auth
+        .send_request(state::get_state_events_for_key::v3::Request::new(
+            room_id,
+            event_type,
+            String::default(),
+        ))
+        .await?;
+
+    Ok(res.content.get_field(field)?)
+}
+
+/// Get room information
+pub async fn info(auth: APIClientAuth, path: web::Path<RoomIDInPath>) -> HttpResult {
+    let room_name: Option<String> = get_room_info(
+        &auth,
+        path.room_id.clone(),
+        StateEventType::RoomName,
+        "name",
+    )
+    .await
+    .ok()
+    .flatten();
+
+    let room_avatar: Option<OwnedMxcUri> = get_room_info(
+        &auth,
+        path.room_id.clone(),
+        StateEventType::RoomAvatar,
+        "url",
+    )
+    .await
+    .ok()
+    .flatten();
+
+    Ok(HttpResponse::Ok().json(GetRoomInfoResponse {
+        name: room_name,
+        avatar: room_avatar.map(ApiMxcURI),
+    }))
+}

src/server/api/ws.rs

@@ -0,0 +1,176 @@
+use crate::broadcast_messages::{BroadcastMessage, SyncEvent};
+use crate::constants::{WS_CLIENT_TIMEOUT, WS_HEARTBEAT_INTERVAL};
+use crate::extractors::client_auth::APIClientAuth;
+use crate::server::HttpResult;
+use actix_web::dev::Payload;
+use actix_web::{web, FromRequest, HttpRequest};
+use actix_ws::Message;
+use futures_util::StreamExt;
+use std::time::Instant;
+use tokio::select;
+use tokio::sync::broadcast;
+use tokio::sync::broadcast::Receiver;
+use tokio::time::interval;
+
+/// Messages send to the client
+#[derive(Debug, serde::Deserialize, serde::Serialize)]
+#[serde(tag = "type")]
+pub enum WsMessage {
+    Sync(SyncEvent),
+}
+
+/// Main WS route
+pub async fn ws(
+    req: HttpRequest,
+    stream: web::Payload,
+    tx: web::Data<broadcast::Sender<BroadcastMessage>>,
+) -> HttpResult {
+    // Forcefully ignore request payload by manually extracting authentication information
+    let auth = APIClientAuth::from_request(&req, &mut Payload::None).await?;
+
+    let (res, session, msg_stream) = actix_ws::handle(&req, stream)?;
+
+    // Ask for sync client to be started
+    if let Err(e) = tx.send(BroadcastMessage::StartSyncTaskForUser(
+        auth.user.user_id.clone(),
+    )) {
+        log::error!("Failed to send StartSyncTaskForUser: {}", e);
+    }
+
+    let rx = tx.subscribe();
+
+    // spawn websocket handler (and don't await it) so that the response is returned immediately
+    actix_web::rt::spawn(ws_handler(session, msg_stream, auth, rx));
+
+    Ok(res)
+}
+
+pub async fn ws_handler(
+    mut session: actix_ws::Session,
+    mut msg_stream: actix_ws::MessageStream,
+    auth: APIClientAuth,
+    mut rx: Receiver<BroadcastMessage>,
+) {
+    log::info!("WS connected");
+
+    let mut last_heartbeat = Instant::now();
+    let mut interval = interval(WS_HEARTBEAT_INTERVAL);
+
+    let reason = loop {
+        // waits for either `msg_stream` to receive a message from the client, the broadcast channel
+        // to send a message, or the heartbeat interval timer to tick, yielding the value of
+        // whichever one is ready first
+        select! {
+            ws_msg = rx.recv() => {
+                let msg = match ws_msg {
+                    Ok(msg) => msg,
+                    Err(broadcast::error::RecvError::Closed) => break None,
+                    Err(broadcast::error::RecvError::Lagged(_)) => continue,
+                };
+
+                match msg {
+                    BroadcastMessage::CloseClientSession(id)  => {
+                        if let Some(client) = &auth.client {
+                            if client.id == id {
+                                log::info!(
+                                "closing client session {id:?} of user {:?} as requested", auth.user.user_id
+                            );
+                            break None;
+                            }
+                        }
+                    },
+                    BroadcastMessage::CloseAllUserSessions(userid) => {
+                        if userid == auth.user.user_id {
+                            log::info!(
+                                "closing WS session of user {userid:?} as requested"
+                            );
+                            break None;
+                        }
+                    }
+
+                    BroadcastMessage::SyncEvent(userid, event) => {
+                        if userid != auth.user.user_id {
+                            continue;
+                        }
+
+                        // Send the message to the websocket
+                        if let Ok(msg) = serde_json::to_string(&WsMessage::Sync(event)) {
+                            if let Err(e) = session.text(msg).await {
+                                log::error!("Failed to send SyncEvent: {}", e);
+                            }
+                        }
+                    }
+                _ => {}};
+
+            }
+
+            // heartbeat interval ticked
+            _tick = interval.tick() => {
+                // if no heartbeat ping/pong received recently, close the connection
+                if Instant::now().duration_since(last_heartbeat) > WS_CLIENT_TIMEOUT {
+                    log::info!(
+                        "client has not sent heartbeat in over {WS_CLIENT_TIMEOUT:?}; disconnecting"
+                    );
+
+                    break None;
+                }
+
+                // send heartbeat ping
+                let _ = session.ping(b"").await;
+            },
+
+            msg = msg_stream.next() => {
+                let msg = match msg {
+                    // received message from WebSocket client
+                    Some(Ok(msg)) => msg,
+
+                    // client WebSocket stream error
+                    Some(Err(err)) => {
+                        log::error!("{err}");
+                        break None;
+                    }
+
+                    // client WebSocket stream ended
+                    None => break None
+                };
+
+                log::debug!("msg: {msg:?}");
+
+                match msg {
+                    Message::Text(s) => {
+                        log::info!("Text message: {s}");
+                    }
+
+                    Message::Binary(_) => {
+                        // drop client's binary messages
+                    }
+
+                    Message::Close(reason) => {
+                        break reason;
+                    }
+
+                    Message::Ping(bytes) => {
+                        last_heartbeat = Instant::now();
+                        let _ = session.pong(&bytes).await;
+                    }
+
+                    Message::Pong(_) => {
+                        last_heartbeat = Instant::now();
+                    }
+
+                    Message::Continuation(_) => {
+                        log::warn!("no support for continuation frames");
+                    }
+
+                    // no-op; ignore
+                    Message::Nop => {}
+                };
+            }
+        }
+    };
+
+    // attempt to close connection gracefully
+    let _ = session.close(reason).await;
+
+    log::info!("WS disconnected");
+}

src/server/mod.rs

@@ -12,6 +12,8 @@ pub enum HttpFailure {
     Forbidden,
     #[error("this resource was not found")]
     NotFound,
+    #[error("Actix web error")]
+    ActixError(#[from] actix_web::Error),
     #[error("an unhandled session insert error occurred")]
     SessionInsertError(#[from] actix_session::SessionInsertError),
     #[error("an unhandled session error occurred")]
@@ -26,6 +28,8 @@ pub enum HttpFailure {
     MatrixApiClientError(#[from] ruma::api::client::Error),
     #[error("a matrix client error occurred: {0}")]
     MatrixClientError(String),
+    #[error("a serde_json error occurred: {0}")]
+    SerdeJsonError(#[from] serde_json::error::Error),
 }
 
 impl ResponseError for HttpFailure {

src/server/web_ui.rs

@@ -1,14 +1,16 @@
 use crate::app_config::AppConfig;
+use crate::broadcast_messages::BroadcastMessage;
 use crate::constants::{STATE_KEY, USER_SESSION_KEY};
 use crate::server::{HttpFailure, HttpResult};
 use crate::user::{APIClient, APIClientID, User, UserConfig, UserID};
-use crate::utils;
+use crate::utils::base_utils;
 use actix_session::Session;
 use actix_web::{web, HttpResponse};
 use askama::Template;
 use ipnet::IpNet;
 use light_openid::primitives::OpenIDConfig;
 use std::str::FromStr;
+use tokio::sync::broadcast;
 
 /// Static assets
 #[derive(rust_embed::Embed)]
@@ -60,11 +62,15 @@ pub struct FormRequest {
 }
 
 /// Main route
-pub async fn home(session: Session, form_req: Option<web::Form<FormRequest>>) -> HttpResult {
+pub async fn home(
+    session: Session,
+    form_req: Option<web::Form<FormRequest>>,
+    tx: web::Data<broadcast::Sender<BroadcastMessage>>,
+) -> HttpResult {
     // Get user information, requesting authentication if information is missing
     let Some(user): Option<User> = session.get(USER_SESSION_KEY)? else {
         // Generate auth state
-        let state = utils::rand_str(50);
+        let state = base_utils::rand_str(50);
         session.insert(STATE_KEY, &state)?;
 
         let oidc = AppConfig::get().openid_provider();
@@ -93,10 +99,19 @@ pub async fn home(session: Session, form_req: Option<web::Form<FormRequest>>) ->
             if t.len() < 3 {
                 error_message = Some("Specified Matrix token is too short!".to_string());
             } else {
-                // TODO : invalidate all existing connections
                 config.matrix_token = t;
                 config.save().await?;
                 success_message = Some("Matrix token was successfully updated!".to_string());
+
+                // Close sync task
+                if let Err(e) = tx.send(BroadcastMessage::StopSyncTaskForUser(user.id.clone())) {
+                    log::error!("Failed to send StopSyncClientForUser: {}", e);
+                }
+
+                // Invalidate all Ws connections
+                if let Err(e) = tx.send(BroadcastMessage::CloseAllUserSessions(user.id.clone())) {
+                    log::error!("Failed to send CloseAllUserSessions: {}", e);
+                }
             }
         }
 
@@ -128,7 +143,10 @@ pub async fn home(session: Session, form_req: Option<web::Form<FormRequest>>) ->
             config.clients.retain(|c| c.id != delete_client_id);
             config.save().await?;
             success_message = Some("The client was successfully deleted!".to_string());
-            // TODO : close connections with given id
+
+            if let Err(e) = tx.send(BroadcastMessage::CloseClientSession(delete_client_id)) {
+                log::error!("Failed to send CloseClientSession: {}", e);
+            }
         }
     }
 
@@ -213,3 +231,22 @@ pub async fn sign_out(session: Session) -> HttpResult {
         .insert_header(("location", "/"))
         .finish())
 }
+
+#[derive(askama::Template)]
+#[template(path = "ws_debug.html")]
+struct WsDebugTemplate {
+    name: String,
+}
+
+/// WebSocket debug
+pub async fn ws_debug(session: Session) -> HttpResult {
+    let Some(user): Option<User> = session.get(USER_SESSION_KEY)? else {
+        return Ok(HttpResponse::Found()
+            .insert_header(("location", "/"))
+            .finish());
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("text/html")
+        .body(WsDebugTemplate { name: user.name }.render().unwrap()))
+}

src/sync_client.rs

@@ -0,0 +1,145 @@
+use crate::broadcast_messages::{BroadcastMessage, SyncEvent};
+use crate::user::{UserConfig, UserID};
+use futures_util::TryStreamExt;
+use ruma::api::client::sync::sync_events;
+use ruma::assign;
+use ruma::presence::PresenceState;
+use std::collections::HashMap;
+use std::sync::Arc;
+use std::time::Duration;
+use tokio::sync::broadcast;
+
+/// ID of sync client
+#[derive(Debug, Clone, Eq, PartialEq)]
+pub struct SyncClientID(uuid::Uuid);
+
+/// Sync client launcher loop
+pub async fn sync_client_manager(tx: broadcast::Sender<BroadcastMessage>) -> ! {
+    let mut rx = tx.subscribe();
+    let tx = Arc::new(tx.clone());
+
+    let mut running_tasks = HashMap::new();
+
+    while let Ok(msg) = rx.recv().await {
+        match msg {
+            BroadcastMessage::StartSyncTaskForUser(user_id) => {
+                if running_tasks.contains_key(&user_id) {
+                    log::info!("Won't start sync task for user {user_id:?} because a task is already running for this user!");
+                    continue;
+                }
+
+                log::info!("Start sync task for user {:?}", user_id);
+                let task_id = SyncClientID(uuid::Uuid::new_v4());
+                running_tasks.insert(user_id.clone(), task_id.clone());
+
+                let tx = tx.clone();
+                tokio::task::spawn(async move {
+                    sync_task(task_id, user_id, tx).await;
+                });
+            }
+
+            BroadcastMessage::StopSyncTaskForUser(user_id) => {
+                // Check if a task is running for this user
+                if let Some(task_id) = running_tasks.remove(&user_id) {
+                    log::info!("Stop sync task for user {:?}", user_id);
+                    tx.send(BroadcastMessage::StopSyncClient(task_id)).unwrap();
+                } else {
+                    log::info!("Not stopping sync task for user {user_id:?}: not running");
+                }
+            }
+
+            _ => {}
+        }
+    }
+
+    panic!("Sync client manager stopped unexpectedly!");
+}
+
+/// Sync task for a single user
+async fn sync_task(
+    id: SyncClientID,
+    user_id: UserID,
+    tx: Arc<broadcast::Sender<BroadcastMessage>>,
+) {
+    let mut rx = tx.subscribe();
+
+    let Ok(user_config) = UserConfig::load(&user_id, false).await else {
+        log::error!("Failed to load user config in sync thread!");
+        return;
+    };
+
+    let client = match user_config.matrix_client().await {
+        Err(e) => {
+            log::error!("Failed to load matrix client for user {user_id:?}: {e}");
+            return;
+        }
+        Ok(client) => client,
+    };
+
+    let initial_sync_response = match client
+        .send_request(assign!(sync_events::v3::Request::new(), {
+            filter: None,
+        }))
+        .await
+    {
+        Ok(res) => res,
+        Err(e) => {
+            log::error!("Failed to perform initial sync request for user {user_id:?}! {e}");
+            return;
+        }
+    };
+
+    let mut sync_stream = Box::pin(client.sync(
+        None,
+        initial_sync_response.next_batch,
+        PresenceState::Offline,
+        Some(Duration::from_secs(30)),
+    ));
+
+    loop {
+        tokio::select! {
+            // Message from tokio broadcast
+            msg = rx.recv() => {
+               match msg {
+                    Ok(BroadcastMessage::StopSyncClient(client_id)) => {
+                        if client_id == id {
+                            log::info!("A request was received to stop this client! {id:?} for user {user_id:?}");
+                            break;
+                        }
+                    }
+
+                    Err(e) => {
+                        log::error!("Failed to receive a message from broadcast! {e}");
+                        return;
+                    }
+
+                    Ok(_) => {}
+                }
+            }
+
+            // Message from Matrix
+            msg_stream = sync_stream.try_next() => {
+                match msg_stream {
+                    Ok(Some(msg)) => {
+                        log::debug!("Received new message from Matrix: {msg:#?}");
+                        if let Err(e) = tx.send(BroadcastMessage::SyncEvent(user_id.clone(), SyncEvent {
+                            rooms: msg.rooms,presence: msg.presence,
+                            account_data: msg.account_data,
+                            to_device: msg.to_device,
+                            device_lists: msg.device_lists,
+                        })) {
+                            log::error!("Failed to propagate event! {e}");
+                        }
+                    }
+                    Ok(None) => {
+                        log::debug!("Received no message from Matrix");
+                    }
+                    Err(e) => {
+                        log::error!("Failed to receive a message from Matrix! {e}");
+                        return;
+                    }
+                }
+            }
+        }
+    }
+}

src/user.rs

@@ -6,7 +6,7 @@ use thiserror::Error;
 
 use crate::app_config::AppConfig;
 use crate::constants::TOKEN_LEN;
-use crate::utils::{curr_time, format_time, rand_str};
+use crate::utils::base_utils::{curr_time, format_time, rand_str};
 
 type HttpClient = ruma::client::http_client::HyperNativeTls;
 pub type RumaClient = ruma::Client<HttpClient>;
@@ -19,7 +19,7 @@ pub enum UserError {
     MissingMatrixToken,
 }
 
-#[derive(serde::Serialize, serde::Deserialize, Debug, Clone)]
+#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, PartialEq, Eq, Hash)]
 pub struct UserID(pub String);
 
 impl UserID {

src/utils/matrix_utils.rs

@@ -0,0 +1,18 @@
+use ruma::OwnedMxcUri;
+use serde::ser::SerializeMap;
+use serde::{Serialize, Serializer};
+
+pub struct ApiMxcURI(pub OwnedMxcUri);
+
+impl Serialize for ApiMxcURI {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut map = serializer.serialize_map(Some(3))?;
+        map.serialize_entry("uri", &self.0)?;
+        map.serialize_entry("server_name", &self.0.server_name().ok())?;
+        map.serialize_entry("media_id", &self.0.media_id().ok())?;
+        map.end()
+    }
+}

src/utils/mod.rs

@@ -0,0 +1,2 @@
+pub mod base_utils;
+pub mod matrix_utils;

templates/base_page.html

@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Matrix GW</title>
+    <link rel="icon" type="image/png" href="/assets/favicon.png"/>
+
+    <link rel="stylesheet" href="/assets/bootstrap.css"/>
+    <link rel="stylesheet" href="/assets/style.css"/>
+</head>
+<body>
+
+<!-- Header -->
+<header data-bs-theme="dark">
+    <div class="navbar navbar-dark bg-dark shadow-sm">
+        <div class="container">
+            <a href="/" class="navbar-brand d-flex align-items-center">
+                <svg xxmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="none" stroke="currentColor"
+                     stroke-linecap="round" stroke-linejoin="round" stroke-width="1" aria-hidden="true" class="me-2"
+                     viewBox="0 0 24 24">
+                    <path d="M10 11.5H17V13H10V11.5M10 8.5H19V10H10V8.5M20 5H9C7.9 5 7 5.9 7 7V21L11 17H20C21.1 17 22 16.1 22 15V7C22 5.9 21.1 5 20 5M20 15H10.2L9 16.2V7H20V15M3 7C2.4 7 2 7.4 2 8S2.4 9 3 9H5V7H3M2 11C1.4 11 1 11.4 1 12S1.4 13 2 13H5V11H2M1 15C.4 15 0 15.4 0 16C0 16.6 .4 17 1 17H5V15H1Z"/>
+                </svg>
+                <strong>Matrix GW</strong>
+            </a>
+            <ul class="navbar-nav mr-auto" style="flex: 1">
+                <li class="nav-item"><a href="/ws_debug" class="nav-link">WS Debug</a></li>
+            </ul>
+
+            <div class="navbar" >
+                <span>Hi <span style="font-style: italic;">{{ name }}</span>&nbsp;&nbsp;</span>
+                <a href="/sign_out">Sign out</a>
+            </div>
+        </div>
+    </div>
+</header>
+
+
+<div class="body-content">
+    {% block content %}
+    TO_REPLACE
+    {% endblock content %}
+</div>
+
+
+</body>
+</html>

templates/index.html

@@ -1,57 +1,24 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <title>Matrix GW</title>
-    <link rel="icon" type="image/png" href="/assets/favicon.png"/>
-
-    <link rel="stylesheet" href="/assets/bootstrap.css"/>
-    <link rel="stylesheet" href="/assets/style.css"/>
-    <script src="/assets/script.js"></script>
-</head>
-<body>
-
-<!-- Header -->
-<header data-bs-theme="dark">
-    <div class="navbar navbar-dark bg-dark shadow-sm">
-        <div class="container">
-            <a href="/" class="navbar-brand d-flex align-items-center">
-                <svg xxmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="none" stroke="currentColor"
-                     stroke-linecap="round" stroke-linejoin="round" stroke-width="1" aria-hidden="true" class="me-2"
-                     viewBox="0 0 24 24">
-                    <path d="M10 11.5H17V13H10V11.5M10 8.5H19V10H10V8.5M20 5H9C7.9 5 7 5.9 7 7V21L11 17H20C21.1 17 22 16.1 22 15V7C22 5.9 21.1 5 20 5M20 15H10.2L9 16.2V7H20V15M3 7C2.4 7 2 7.4 2 8S2.4 9 3 9H5V7H3M2 11C1.4 11 1 11.4 1 12S1.4 13 2 13H5V11H2M1 15C.4 15 0 15.4 0 16C0 16.6 .4 17 1 17H5V15H1Z"/>
-                </svg>
-                <strong>Matrix GW</strong>
-            </a>
-            <div class="navbar">
-                <span>Hi <span style="font-style: italic;">{{ name }}</span>&nbsp;&nbsp;</span>
-                <a href="/sign_out">Sign out</a>
-            </div>
-        </div>
-    </div>
-</header>
-
-
-<div class="body-content">
-    <!-- Success message -->
-    {% if let Some(msg) = success_message %}
-    <div class="alert alert-success">
+{% extends "base_page.html" %}
+{% block content %}
+<!-- Success message -->
+{% if let Some(msg) = success_message %}
+<div class="alert alert-success">
     {{ msg }}
-    </div>
-    {% endif %}
+</div>
+{% endif %}
 
-    <!-- Error message -->
-    {% if let Some(msg) = error_message %}
-    <div class="alert alert-danger">
+<!-- Error message -->
+{% if let Some(msg) = error_message %}
+<div class="alert alert-danger">
     {{ msg }}
-    </div>
-    {% endif %}
+</div>
+{% endif %}
 
-    <!-- User ID -->
-    <div id="user_id_container"><strong>Current user ID</strong>: {{ user_id.0 }}</div>
+<!-- User ID -->
+<div id="user_id_container"><strong>Current user ID</strong>: {{ user_id.0 }}</div>
 
-    <!-- Display clients list -->
-    <div class="card border-light mb-3">
+<!-- Display clients list -->
+<div class="card border-light mb-3">
     <div class="card-header">Registered clients</div>
     <div class="card-body">
         {% if clients.len() > 0 %}
@@ -103,10 +70,10 @@
         <p>No client registered yet!</p>
         {% endif %}
     </div>
-    </div>
+</div>
 
-    <!-- New client -->
-    <div class="card border-light mb-3">
+<!-- New client -->
+<div class="card border-light mb-3">
     <div class="card-header">New client</div>
     <div class="card-body">
         <form action="/" method="post">
@@ -140,10 +107,10 @@
             <input type="submit" class="btn btn-primary" value="Create client"/>
         </form>
     </div>
-    </div>
+</div>
 
-    <!-- Matrix authentication token -->
-    <div class="card border-light mb-3">
+<!-- Matrix authentication token -->
+<div class="card border-light mb-3">
     <div class="card-header">Matrix authentication token</div>
     <div class="card-body">
         <p>To obtain a new Matrix authentication token:</p>
@@ -173,9 +140,7 @@
             <input type="submit" class="btn btn-primary" value="Update"/>
         </form>
     </div>
-    </div>
 </div>
 
-
-</body>
-</html>
+<script src="/assets/script.js"></script>
+{% endblock content %}

templates/ws_debug.html

@@ -0,0 +1,46 @@
+{% extends "base_page.html" %}
+{% block content %}
+
+<style>
+    #ws_actions {
+        margin: 30px;
+        border: 1px white solid;
+        padding: 10px;
+    }
+
+    #ws_log {
+        margin: 30px;
+        border: 1px white solid;
+        padding: 10px;
+    }
+
+    #ws_log .message {
+        display: flex;
+        margin-bottom: 10px;
+    }
+
+    #ws_log .message .type {
+        font-style: italic;
+        margin-right: 10px;
+    }
+</style>
+
+
+<h2>WS Debug</h2>
+
+<div id="ws_actions">
+    <button onclick="connect()">Reconnect</button>
+    <button onclick="disconnect()">Disconnect</button>
+    <button onclick="clearLogs()">Clear logs</button>
+    <span>State: <span id="state">DISCONNECTED</span></span>
+</div>
+
+<div id="ws_log">
+    <div class="message">
+        <div class="type">INFO</div>
+        <div>Welcome!</div>
+    </div>
+</div>
+
+<script src="/assets/ws_debug.js"></script>
+{% endblock content %}