557 lines
18 KiB
Rust
557 lines
18 KiB
Rust
// Copyright 2020 Damir Jelić
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// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use futures::future::{BoxFuture, Future, FutureExt};
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use std::convert::{TryFrom, TryInto};
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use std::sync::atomic::{AtomicU64, Ordering};
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use std::sync::{Arc, Mutex, RwLock};
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use std::time::Duration;
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use async_std::task::sleep;
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use http::Method as HttpMethod;
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use http::Response as HttpResponse;
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use js_int::UInt;
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use reqwest::header::{HeaderValue, InvalidHeaderValue};
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use url::Url;
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use ruma_api::{Endpoint, Outgoing};
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use ruma_events::collections::all::RoomEvent;
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use ruma_events::room::message::MessageEventContent;
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use ruma_events::EventResult;
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pub use ruma_events::EventType;
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use ruma_identifiers::RoomId;
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use crate::api;
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use crate::base_client::Client as BaseClient;
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use crate::base_client::Room;
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use crate::error::{Error, InnerError};
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use crate::session::Session;
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use crate::VERSION;
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type RoomEventCallback =
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Box<dyn FnMut(Arc<RwLock<Room>>, Arc<EventResult<RoomEvent>>) -> BoxFuture<'static, ()> + Send>;
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#[derive(Clone)]
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/// An async/await enabled Matrix client.
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pub struct AsyncClient {
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/// The URL of the homeserver to connect to.
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homeserver: Url,
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/// The underlying HTTP client.
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http_client: reqwest::Client,
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/// User session data.
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base_client: Arc<RwLock<BaseClient>>,
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/// The transaction id.
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transaction_id: Arc<AtomicU64>,
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/// Event callbacks
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event_callbacks: Arc<Mutex<Vec<RoomEventCallback>>>,
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}
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#[derive(Default, Debug)]
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/// Configuration for the creation of the `AsyncClient`.
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///
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/// # Example
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///
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/// ```
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/// // To pass all the request through mitmproxy set the proxy and disable SSL
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/// // verification
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/// use matrix_nio::AsyncClientConfig;
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///
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/// let client_config = AsyncClientConfig::new()
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/// .proxy("http://localhost:8080")
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/// .unwrap()
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/// .disable_ssl_verification();
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/// ```
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pub struct AsyncClientConfig {
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proxy: Option<reqwest::Proxy>,
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user_agent: Option<HeaderValue>,
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disable_ssl_verification: bool,
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}
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impl AsyncClientConfig {
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/// Create a new default `AsyncClientConfig`.
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pub fn new() -> Self {
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Default::default()
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}
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/// Set the proxy through which all the HTTP requests should go.
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///
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/// Note, only HTTP proxies are supported.
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///
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/// # Arguments
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///
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/// * `proxy` - The HTTP URL of the proxy.
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///
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/// # Example
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///
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/// ```
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/// use matrix_nio::AsyncClientConfig;
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///
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/// let client_config = AsyncClientConfig::new()
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/// .proxy("http://localhost:8080")
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/// .unwrap();
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/// ```
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pub fn proxy(mut self, proxy: &str) -> Result<Self, Error> {
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self.proxy = Some(reqwest::Proxy::all(proxy)?);
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Ok(self)
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}
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/// Disable SSL verification for the HTTP requests.
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pub fn disable_ssl_verification(mut self) -> Self {
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self.disable_ssl_verification = true;
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self
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}
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/// Set a custom HTTP user agent for the client.
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pub fn user_agent(mut self, user_agent: &str) -> Result<Self, InvalidHeaderValue> {
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self.user_agent = Some(HeaderValue::from_str(user_agent)?);
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Ok(self)
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}
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}
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#[derive(Debug, Default, Clone)]
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/// Settings for a sync call.
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pub struct SyncSettings {
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pub(crate) timeout: Option<UInt>,
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pub(crate) token: Option<String>,
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pub(crate) full_state: Option<bool>,
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}
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impl SyncSettings {
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/// Create new default sync settings.
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pub fn new() -> Self {
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Default::default()
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}
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/// Set the sync token.
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///
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/// # Arguments
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///
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/// * `token` - The sync token that should be used for the sync call.
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pub fn token<S: Into<String>>(mut self, token: S) -> Self {
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self.token = Some(token.into());
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self
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}
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/// Set the maximum time the server can wait, in milliseconds, before
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/// responding to the sync request.
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///
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/// # Arguments
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///
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/// * `timeout` - The time the server is allowed to wait.
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pub fn timeout<T: TryInto<UInt>>(mut self, timeout: T) -> Result<Self, js_int::TryFromIntError>
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where
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js_int::TryFromIntError:
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std::convert::From<<T as std::convert::TryInto<js_int::UInt>>::Error>,
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{
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self.timeout = Some(timeout.try_into()?);
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Ok(self)
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}
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/// Should the server return the full state from the start of the timeline.
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///
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/// This does nothing if no sync token is set.
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///
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/// # Arguments
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/// * `full_state` - A boolean deciding if the server should return the full
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/// state or not.
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pub fn full_state(mut self, full_state: bool) -> Self {
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self.full_state = Some(full_state);
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self
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}
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}
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use api::r0::message::create_message_event;
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use api::r0::session::login;
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use api::r0::sync::sync_events;
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impl AsyncClient {
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/// Creates a new client for making HTTP requests to the given homeserver.
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///
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/// # Arguments
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///
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/// * `homeserver_url` - The homeserver that the client should connect to.
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/// * `session` - If a previous login exists, the access token can be
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/// reused by giving a session object here.
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pub fn new<U: TryInto<Url>>(
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homeserver_url: U,
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session: Option<Session>,
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) -> Result<Self, Error> {
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let config = AsyncClientConfig::new();
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AsyncClient::new_with_config(homeserver_url, session, config)
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}
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/// Create a new client with the given configuration.
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///
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/// # Arguments
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///
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/// * `homeserver_url` - The homeserver that the client should connect to.
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/// * `session` - If a previous login exists, the access token can be
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/// reused by giving a session object here.
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/// * `config` - Configuration for the client.
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pub fn new_with_config<U: TryInto<Url>>(
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homeserver_url: U,
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session: Option<Session>,
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config: AsyncClientConfig,
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) -> Result<Self, Error> {
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let homeserver: Url = match homeserver_url.try_into() {
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Ok(u) => u,
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Err(_e) => panic!("Error parsing homeserver url"),
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};
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let http_client = reqwest::Client::builder();
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let http_client = if config.disable_ssl_verification {
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http_client.danger_accept_invalid_certs(true)
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} else {
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http_client
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};
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let http_client = match config.proxy {
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Some(p) => http_client.proxy(p),
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None => http_client,
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};
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let mut headers = reqwest::header::HeaderMap::new();
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let user_agent = match config.user_agent {
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Some(a) => a,
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None => HeaderValue::from_str(&format!("nio-rust {}", VERSION)).unwrap(),
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};
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headers.insert(reqwest::header::USER_AGENT, user_agent);
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let http_client = http_client.default_headers(headers).build()?;
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Ok(Self {
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homeserver,
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http_client,
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base_client: Arc::new(RwLock::new(BaseClient::new(session))),
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transaction_id: Arc::new(AtomicU64::new(0)),
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event_callbacks: Arc::new(Mutex::new(Vec::new())),
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})
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}
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/// Is the client logged in.
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pub fn logged_in(&self) -> bool {
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self.base_client.read().unwrap().logged_in()
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}
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/// The Homeserver of the client.
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pub fn homeserver(&self) -> &Url {
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&self.homeserver
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}
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/// Add a callback that will be called every time the client receives a room
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/// event
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///
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/// # Arguments
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///
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/// * `callback` - The callback that should be called once a RoomEvent is
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/// received.
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///
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/// # Examples
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/// ```noexecute
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/// async fn async_cb(room: Arc<RwLock<Room>>, event: Arc<EventResult<RoomEvent>>) {
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/// let room = room.read().unwrap();
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/// let event = if let EventResult::Ok(event) = &*event {
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/// event
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/// } else {
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/// return;
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/// };
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/// if let RoomEvent::RoomMessage(MessageEvent {
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/// content: MessageEventContent::Text(TextMessageEventContent { body: msg_body, .. }),
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/// sender,
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/// ..
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/// }) = event
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/// {
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/// let user = room.members.get(&sender.to_string()).unwrap();
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/// println!(
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/// "{}: {}",
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/// user.display_name.as_ref().unwrap_or(&sender.to_string()),
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/// msg_body
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/// );
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/// }
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/// }
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///
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/// async fn main(client: AsyncClient) {
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/// client.add_event_callback(async_cb);
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/// }
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///```
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pub fn add_event_callback<C: 'static>(
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&mut self,
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mut callback: impl FnMut(Arc<RwLock<Room>>, Arc<EventResult<RoomEvent>>) -> C + 'static + Send,
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) where
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C: Future<Output = ()> + Send,
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{
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let mut futures = self.event_callbacks.lock().unwrap();
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let future = move |room, event| callback(room, event).boxed();
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futures.push(Box::new(future));
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}
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/// Login to the server.
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///
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/// # Arguments
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///
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/// `user` - The user that should be logged in to the homeserver.
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/// `password` - The password of the user.
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/// `device_id` - A unique id that will be associated with this session. If
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/// not given the homeserver will create one. Can be an exising
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/// device_id from a previous login call. Note that this should be done
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/// only if the client also holds the encryption keys for this devcie.
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pub async fn login<S: Into<String>>(
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&mut self,
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user: S,
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password: S,
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device_id: Option<S>,
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) -> Result<login::Response, Error> {
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let request = login::Request {
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user: login::UserInfo::MatrixId(user.into()),
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login_info: login::LoginInfo::Password {
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password: password.into(),
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},
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device_id: device_id.map(|d| d.into()),
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initial_device_display_name: None,
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};
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let response = self.send(request).await?;
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let mut client = self.base_client.write().unwrap();
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client.receive_login_response(&response);
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Ok(response)
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}
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/// Synchronise the client's state with the latest state on the server.
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///
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/// # Arguments
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///
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/// * `sync_settings` - Settings for the sync call.
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pub async fn sync(
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&mut self,
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sync_settings: SyncSettings,
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) -> Result<sync_events::IncomingResponse, Error> {
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let request = sync_events::Request {
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filter: None,
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since: sync_settings.token,
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full_state: sync_settings.full_state,
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set_presence: None,
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timeout: sync_settings.timeout,
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};
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let response = self.send(request).await?;
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for (room_id, room) in &response.rooms.join {
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let room_id = room_id.to_string();
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let matrix_room = {
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let mut client = self.base_client.write().unwrap();
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for event in &room.state.events {
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if let EventResult::Ok(e) = event {
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client.receive_joined_state_event(&room_id, &e);
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}
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}
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client.joined_rooms.get(&room_id).unwrap().clone()
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};
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for event in &room.timeline.events {
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{
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let mut client = self.base_client.write().unwrap();
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client.receive_joined_timeline_event(&room_id, &event);
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}
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let event = Arc::new(event.clone());
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let callbacks = {
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let mut cb_futures = self.event_callbacks.lock().unwrap();
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let mut callbacks = Vec::new();
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for cb in &mut cb_futures.iter_mut() {
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callbacks.push(cb(matrix_room.clone(), event.clone()));
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}
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callbacks
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};
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for cb in callbacks {
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cb.await;
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}
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}
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let mut client = self.base_client.write().unwrap();
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client.receive_sync_response(&response);
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}
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Ok(response)
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}
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/// Repeatedly call sync to synchronize the client state with the server.
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///
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/// # Arguments
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///
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/// * `sync_settings` - Settings for the sync call. Note that those settings
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/// will be only used for the first sync call.
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/// * `callback` - A callback that will be called every time a successful
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/// response has been fetched from the server.
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///
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/// # Examples
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///
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/// The following example demonstrates how to sync forever while sending all
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/// the interesting events through a mpsc channel to another thread e.g. a
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/// UI thread.
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///
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/// ```noexecute
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/// client
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/// .sync_forever(sync_settings, async move |response| {
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/// let channel = sync_channel;
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/// for (room_id, room) in response.rooms.join {
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/// for event in room.state.events {
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/// if let EventResult::Ok(e) = event {
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/// channel.send(e).await;
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/// }
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/// }
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/// for event in room.timeline.events {
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/// if let EventResult::Ok(e) = event {
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/// channel.send(e).await;
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/// }
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/// }
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/// }
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/// })
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/// .await;
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/// ```
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pub async fn sync_forever<C>(
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&mut self,
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sync_settings: SyncSettings,
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callback: impl Fn(sync_events::IncomingResponse) -> C + Send,
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) where
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C: Future<Output = ()>,
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{
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let mut sync_settings = sync_settings;
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loop {
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let response = self.sync(sync_settings.clone()).await;
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// TODO query keys here.
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// TODO upload keys here
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// TODO send out to-device messages here
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let response = if let Ok(r) = response {
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r
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} else {
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sleep(Duration::from_secs(1)).await;
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continue;
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};
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callback(response).await;
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sync_settings = SyncSettings::new()
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.timeout(30000)
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.unwrap()
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.token(self.sync_token().unwrap());
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}
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}
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async fn send<Request: Endpoint>(
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&self,
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request: Request,
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) -> Result<<Request::Response as Outgoing>::Incoming, Error>
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where
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Request::Incoming:
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TryFrom<http::Request<Vec<u8>>, Error = ruma_api::error::FromHttpRequestError>,
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<Request::Response as Outgoing>::Incoming:
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TryFrom<http::Response<Vec<u8>>, Error = ruma_api::error::FromHttpResponseError>,
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{
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let request: http::Request<Vec<u8>> = request.try_into()?;
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let url = request.uri();
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let url = self
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.homeserver
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.join(url.path_and_query().unwrap().as_str())
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.unwrap();
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let request_builder = match Request::METADATA.method {
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HttpMethod::GET => self.http_client.get(url),
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HttpMethod::POST => {
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let body = request.body().clone();
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self.http_client.post(url).body(body)
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}
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HttpMethod::PUT => {
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let body = request.body().clone();
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self.http_client.put(url).body(body)
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}
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HttpMethod::DELETE => unimplemented!(),
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_ => panic!("Unsuported method"),
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};
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let request_builder = if Request::METADATA.requires_authentication {
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let client = self.base_client.read().unwrap();
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if let Some(ref session) = client.session {
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request_builder.bearer_auth(&session.access_token)
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} else {
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return Err(Error(InnerError::AuthenticationRequired));
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}
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} else {
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request_builder
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};
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let response = request_builder.send().await?;
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let status = response.status();
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let body = response.bytes().await?.as_ref().to_owned();
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let response = HttpResponse::builder().status(status).body(body).unwrap();
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let response = <Request::Response as Outgoing>::Incoming::try_from(response)?;
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Ok(response)
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}
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/// Get a new unique transaction id for the client.
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fn transaction_id(&self) -> u64 {
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self.transaction_id.fetch_add(1, Ordering::SeqCst)
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}
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/// Send a room message to the homeserver.
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///
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/// # Arguments
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///
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/// `room_id` - The id of the room that should receive the message.
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/// `data` - The content of the message.
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///
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/// Returns the parsed response from the server.
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pub async fn room_send(
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&mut self,
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room_id: &str,
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data: MessageEventContent,
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) -> Result<create_message_event::Response, Error> {
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let request = create_message_event::Request {
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room_id: RoomId::try_from(room_id).unwrap(),
|
|
event_type: EventType::RoomMessage,
|
|
txn_id: self.transaction_id().to_string(),
|
|
data,
|
|
};
|
|
|
|
let response = self.send(request).await?;
|
|
Ok(response)
|
|
}
|
|
|
|
/// Get the current, if any, sync token of the client.
|
|
/// This will be None if the client didn't sync at least once.
|
|
pub fn sync_token(&self) -> Option<String> {
|
|
self.base_client.read().unwrap().sync_token.clone()
|
|
}
|
|
}
|