506 lines
17 KiB
Rust
506 lines
17 KiB
Rust
use dashmap::DashMap;
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use iota_connection::message_common::*;
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use iota_connection::message_handlers;
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use iota_connection::relay::message_security_class;
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use iota_logger::{log_cv_in, log_cv_out, log_t};
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use iota_storage::util::config_util::CONFIG;
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use iota_util::crypto_helper::keyring_from_base64;
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use iota_util::crypto_util::{self};
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use mtp::client::{Receiver, Sender};
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use mtp::codec::{CommunicationType, CommunicationValue, DataType, DataValue};
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use mtp::crypto::Keyring;
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use std::sync::Arc;
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use std::time::Duration;
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use tokio::sync::{Mutex, RwLock, mpsc, watch};
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use tokio::task::JoinHandle;
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use uuid::Uuid;
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// ============================================================================
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// Waiting Task System
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// ============================================================================
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#[allow(dead_code)]
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pub struct ClientConnection {
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sender: Arc<RwLock<Option<Arc<Sender>>>>,
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receiver: Receiver,
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connection_loop_handle: Arc<Mutex<Option<JoinHandle<()>>>>,
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pub connection_id: Uuid,
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shutdown_tx: Arc<Mutex<Option<watch::Sender<bool>>>>,
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pub waiting_tasks:
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DashMap<u32, Box<dyn Fn(Arc<ClientConnection>, CommunicationValue) -> bool + Send + Sync>>,
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shutdown: Arc<RwLock<bool>>,
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keyring: Arc<RwLock<Option<Arc<Keyring>>>>,
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}
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impl ClientConnection {
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pub fn new(
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sender: Arc<RwLock<Option<Arc<Sender>>>>,
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receiver: Receiver,
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connection_loop_handle: Arc<Mutex<Option<JoinHandle<()>>>>,
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connection_id: Uuid,
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shutdown_tx: Arc<Mutex<Option<watch::Sender<bool>>>>,
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waiting_tasks: DashMap<
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u32,
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Box<dyn Fn(Arc<ClientConnection>, CommunicationValue) -> bool + Send + Sync>,
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>,
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shutdown: Arc<RwLock<bool>>,
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) -> Self {
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Self {
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sender,
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receiver,
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connection_loop_handle,
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connection_id,
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shutdown_tx,
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waiting_tasks,
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shutdown,
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keyring: Arc::new(RwLock::new(None)),
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}
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}
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pub async fn set_keyring(&self, keyring: Arc<Keyring>) {
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*self.keyring.write().await = Some(keyring);
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}
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async fn local_keyring(&self) -> Result<Arc<Keyring>, String> {
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if let Some(keyring) = self.keyring.read().await.as_ref().cloned() {
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return Ok(keyring);
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}
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let keyring_data = CONFIG
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.load()
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.keyring
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.clone()
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.ok_or_else(|| "Iota keyring is not configured".to_string())?;
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let keyring = keyring_from_base64(&keyring_data)
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.ok_or_else(|| "Iota keyring is invalid".to_string())?;
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let keyring = Arc::new(keyring);
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*self.keyring.write().await = Some(keyring.clone());
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Ok(keyring)
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}
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pub fn start(self: Arc<Self>) {
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let self_clone = self.clone();
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tokio::spawn(async move {
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while let Ok(cv) = self_clone.receiver.receive().await {
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if *self_clone.shutdown.read().await {
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return;
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}
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self.clone().handle_message(cv).await;
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if !self_clone.receiver.is_open() {
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break;
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}
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}
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// Handle Close
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});
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}
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pub async fn stop(&self) {
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if let Some(tx) = self.shutdown_tx.lock().await.take() {
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let _ = tx.send(true);
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}
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if let Some(handle) = self.connection_loop_handle.lock().await.take() {
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handle.abort();
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}
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if let Some(sender) = self.sender.read().await.as_ref() {
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sender.close().await;
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}
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*self.sender.write().await = None;
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}
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// -------------------------------------------------------------------------
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// Message Handling
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// -------------------------------------------------------------------------
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pub async fn handle_message(self: Arc<Self>, cv: CommunicationValue) {
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log_cv_in!(&cv);
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if cv.is_type(CommunicationType::Relay) {
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log_t!(
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"relay_from_client_rejected",
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"legacy client path has no Relay router".to_string()
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);
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let _ = self
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.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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if matches!(
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message_security_class(&cv),
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iota_connection::relay::MessageSecurityClass::RelayOnly
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) {
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let _ = self
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.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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if cv.require_id().is_err() {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::Challenge) {
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self.handle_challenge(&cv).await;
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return;
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}
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if cv.is_type(CommunicationType::GetChatSecret) {
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self.send_message(&message_handlers::handle_get_chat_secret(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::SaveAppData) {
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let sender_id = match cv.require_sender() {
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Ok(sender_id) => sender_id,
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Err(_) => {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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};
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let _app_data = cv
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.get_data(DataType::AppData)
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.as_str()
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.unwrap_or("")
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.to_string();
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let res = CommunicationValue::new(CommunicationType::SaveAppData)
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.with_request_id(&cv)
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.with_receiver(sender_id);
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self.send_message(&res).await;
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return;
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}
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if cv.is_type(CommunicationType::LoadAppData) {
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let sender_id = match cv.require_sender() {
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Ok(sender_id) => sender_id,
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Err(_) => {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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};
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let app_data = String::new();
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let res = CommunicationValue::new(CommunicationType::LoadAppData)
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.with_request_id(&cv)
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.with_receiver(sender_id)
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.add_typed_default(DataType::AppData, DataValue::Str(app_data));
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self.send_message(&res).await;
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return;
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}
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if cv.is_type(CommunicationType::CreateApp) {
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self.send_message(&message_handlers::handle_create_app(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::DeleteApp) {
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self.send_message(&message_handlers::handle_delete_app(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::ClientConnected) {
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self.send_message(&message_handlers::handle_client_connected(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::ClientStateAck) {
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self.send_message(&message_handlers::handle_client_state_ack(&cv))
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.await;
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return;
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}
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// ************************************************ //
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// Direct messages //
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// ************************************************ //
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if cv.is_type(CommunicationType::MessageState) {
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message_handlers::handle_message_state(&cv);
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return;
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}
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if cv.is_type(CommunicationType::MessageEdit) {
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self.send_message(&message_handlers::handle_message_edit(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::MessageReactionAdd) {
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self.send_message(&message_handlers::handle_message_reaction(&cv, true))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::MessageReactionRemove) {
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self.send_message(&message_handlers::handle_message_reaction(&cv, false))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::MessageDeleteLive) {
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self.send_message(&message_handlers::handle_message_delete(&cv))
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.await;
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return;
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}
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// Incoming storsed message: store for the recipient, attempt local delivery, notify sender.
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if cv.is_type(CommunicationType::MessageSend) {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::MessagesGet) {
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self.send_message(&message_handlers::handle_messages_get(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::MessageGet) {
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self.send_message(&message_handlers::handle_message_get(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::GetChats) {
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self.send_message(&message_handlers::handle_get_chats(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::AddConversation) {
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self.send_message(&message_handlers::handle_add_conversation(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::AddCommunity) {
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self.send_message(&message_handlers::handle_add_community(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::GetCommunities) {
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self.send_message(&message_handlers::handle_get_communities(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::RemoveCommunity) {
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self.send_message(&message_handlers::handle_remove_community(&cv))
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.await;
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return;
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}
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if cv.is_type(CommunicationType::SettingsSave) {
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let my_id = match cv.require_sender() {
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Ok(my_id) => my_id,
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Err(_) => {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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};
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let Ok(my_id_i64) = i64::try_from(my_id) else {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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};
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let Some(settings_name) = cv.get_data(DataType::SettingsName).as_str() else {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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};
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let Some(settings_value) = cv.get_data(DataType::Payload).as_str() else {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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};
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let _ = iota_storage::util::settings::save(
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my_id_i64,
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iota_storage::util::settings::GLOBAL_SESSION_ID,
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settings_name,
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settings_value,
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);
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let response = CommunicationValue::new(CommunicationType::SettingsSave)
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.with_receiver(my_id)
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.with_request_id(&cv);
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self.send_message(&response).await;
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return;
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}
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if cv.is_type(CommunicationType::SettingsLoad) {
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let my_id = match cv.require_sender() {
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Ok(my_id) => my_id,
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Err(_) => {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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};
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let Ok(my_id_i64) = i64::try_from(my_id) else {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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};
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let Some(settings_name) = cv.get_data(DataType::SettingsName).as_string() else {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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};
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let settings_value_str = iota_storage::util::settings::load(
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my_id_i64,
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iota_storage::util::settings::GLOBAL_SESSION_ID,
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&settings_name,
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)
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.ok()
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.flatten()
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.unwrap_or_default();
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let response = CommunicationValue::new(CommunicationType::SettingsLoad)
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.with_request_id(&cv)
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.with_receiver(my_id)
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.add_typed_default(DataType::Payload, DataValue::Str(settings_value_str))
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.add_typed_default(DataType::SettingsName, DataValue::Str(settings_name));
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self.send_message(&response).await;
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return;
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}
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if cv.is_type(CommunicationType::SettingsList) {
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let my_id = match cv.require_sender() {
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Ok(my_id) => my_id,
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Err(_) => {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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}
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};
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let Ok(my_id_i64) = i64::try_from(my_id) else {
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self.send_message(&error_response(&cv, CommunicationType::ErrorInvalidData))
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.await;
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return;
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};
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let settings = iota_storage::util::settings::list(
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my_id_i64,
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iota_storage::util::settings::GLOBAL_SESSION_ID,
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)
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.unwrap_or_default();
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let settings_json = settings.into_iter().map(DataValue::Str).collect();
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let response = CommunicationValue::new(CommunicationType::SettingsList)
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.with_request_id(&cv)
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.with_receiver(my_id)
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.add_typed_default(DataType::Settings, DataValue::Array(settings_json));
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self.send_message(&response).await;
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return;
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}
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}
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async fn handle_challenge(&self, cv: &CommunicationValue) {
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let Ok(keyring) = self.local_keyring().await else {
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return;
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};
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let Some(encrypted_challenge) = cv.get_data(DataType::Challenge).as_str() else { return };
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let solved = crypto_util::decrypt_challenge(encrypted_challenge, &keyring).ok();
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if let Some(solved) = solved {
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let response = CommunicationValue::new(CommunicationType::ChallengeResponse)
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.with_request_id(&cv)
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.add_typed_default(DataType::Challenge, DataValue::Str(solved));
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self.send_message(&response).await;
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}
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}
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// -------------------------------------------------------------------------
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// Public API
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// -------------------------------------------------------------------------
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pub async fn send_message(&self, cv: &CommunicationValue) {
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if let Err(err) = self.send_message_result(cv).await {
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log_t!("send_message_failed", err);
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}
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}
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async fn send_message_result(&self, cv: &CommunicationValue) -> Result<(), String> {
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let sender_guard = self.sender.read().await;
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if let Some(sender) = sender_guard.as_ref() {
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if !sender.is_open() {
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drop(sender_guard);
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if let Some(sender) = self.sender.write().await.take() {
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sender.close().await;
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}
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return Err("connection closed".to_string());
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}
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let sender_clone = Arc::clone(sender);
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drop(sender_guard);
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log_cv_out!(&cv);
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if let Err(e) = sender_clone.send(cv).await {
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return Err(e.to_string());
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}
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Ok(())
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} else {
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Err("not connected".to_string())
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}
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}
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pub async fn await_response(
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self: Arc<ClientConnection>,
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cv: &CommunicationValue,
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timeout_duration: Option<Duration>,
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) -> Result<CommunicationValue, String> {
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let (tx, mut rx) = mpsc::channel(1);
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let msg_id = cv
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.require_id()
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.map_err(|error| format!("cannot await response without a message id: {error}"))?;
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let task_tx = tx.clone();
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self.waiting_tasks.insert(
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msg_id,
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Box::new(move |_, response_cv| {
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let inner_tx = task_tx.clone();
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tokio::spawn(async move {
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let _ = inner_tx.send(response_cv).await;
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});
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true
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}),
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);
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self.send_message(cv).await;
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let timeout = timeout_duration.unwrap_or(Duration::from_secs(10));
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match tokio::time::timeout(timeout, rx.recv()).await {
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Ok(Some(response_cv)) => Ok(response_cv),
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Ok(_) => Err("Failed to receive response, channel was closed.".to_string()),
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Err(_) => {
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self.waiting_tasks.remove(&msg_id);
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Err(format!(
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"Request timed out after {} seconds.",
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timeout.as_secs()
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))
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}
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}
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}
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}
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