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pub mod authentication;
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pub mod handshake;
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pub mod repository;
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pub mod user;
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pub mod wrapper;
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use std::{any::type_name, collections::HashMap, net::SocketAddr, str::FromStr, sync::Arc};
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use anyhow::Error;
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use futures_util::{stream::StreamExt, SinkExt};
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use semver::Version;
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use serde::{de::DeserializeOwned, Serialize};
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use tokio::{
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net::TcpStream,
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sync::{
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broadcast::{Receiver, Sender},
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Mutex,
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},
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task::JoinHandle,
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};
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use tokio_tungstenite::{tungstenite::Message, WebSocketStream};
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use crate::{
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authentication::AuthenticationTokenGranter,
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backend::{DiscoveryBackend, RepositoryBackend, UserBackend},
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handshake::{HandshakeFinalize, HandshakeMessage, HandshakeResponse},
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listener::Listeners,
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messages::{
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authentication::{
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AuthenticationMessage, AuthenticationRequest, AuthenticationResponse,
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TokenExtensionResponse,
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},
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repository::{
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RepositoryMessage, RepositoryMessageKind, RepositoryRequest, RepositoryResponse,
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},
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user::{
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UserMessage, UserMessageKind, UserMessageRequest, UserMessageResponse,
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UserRepositoriesResponse,
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},
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ErrorMessage, MessageKind,
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},
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model::{
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instance::{Instance, InstanceMeta},
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repository::Repository,
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user::User,
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},
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validate_version, version,
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};
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#[derive(Debug, thiserror::Error)]
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pub enum ConnectionError {
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#[error("connection error message {0}")]
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ErrorMessage(#[from] ErrorMessage),
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#[error("connection should close")]
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Shutdown,
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#[error("internal error {0}")]
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InternalError(#[from] Error),
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}
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pub struct RawConnection {
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pub task: JoinHandle<()>,
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}
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pub struct InstanceConnection {
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pub instance: InstanceMeta,
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pub sender: Sender<MessageKind>,
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pub task: JoinHandle<()>,
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}
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pub struct UnestablishedConnection {
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pub socket: WebSocketStream<TcpStream>,
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}
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#[derive(Default)]
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pub struct Connections {
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pub connections: Vec<RawConnection>,
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pub instance_connections: HashMap<Instance, InstanceConnection>,
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}
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pub async fn connection_worker(
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mut socket: &mut WebSocketStream<TcpStream>,
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handshaked: &mut bool,
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listeners: &Arc<Mutex<Listeners>>,
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connections: &Arc<Mutex<Connections>>,
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backend: &Arc<Mutex<dyn RepositoryBackend + Send>>,
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user_backend: &Arc<Mutex<dyn UserBackend + Send>>,
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auth_granter: &Arc<Mutex<AuthenticationTokenGranter>>,
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discovery_backend: &Arc<Mutex<dyn DiscoveryBackend + Send>>,
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addr: &SocketAddr,
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) -> Result<(), ConnectionError> {
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let this_instance = Instance {
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url: String::from("giterated.dev"),
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};
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let message = socket
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.next()
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.await
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.ok_or_else(|| ConnectionError::Shutdown)?
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.map_err(|e| Error::from(e))?;
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let payload = match message {
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Message::Text(text) => text.into_bytes(),
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Message::Binary(bytes) => bytes,
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Message::Ping(_) => return Ok(()),
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Message::Pong(_) => return Ok(()),
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Message::Close(_) => {
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info!("Closing connection with {}.", addr);
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return Err(ConnectionError::Shutdown);
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}
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_ => unreachable!(),
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};
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let message = serde_json::from_slice::<MessageKind>(&payload).map_err(|e| Error::from(e))?;
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if let MessageKind::Handshake(handshake) = message {
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match handshake {
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HandshakeMessage::Initiate(request) => {
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unimplemented!()
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}
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HandshakeMessage::Response(response) => {
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unimplemented!()
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}
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HandshakeMessage::Finalize(response) => {
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unimplemented!()
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}
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}
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}
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if !*handshaked {
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return Ok(());
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}
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if let MessageKind::Repository(repository) = &message {
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if repository.target.instance != this_instance {
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info!("Forwarding command to {}", repository.target.instance.url);
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let mut listener = send_and_get_listener(message, &listeners, &connections).await;
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while let Ok(message) = listener.recv().await {
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if let MessageKind::Repository(RepositoryMessage {
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command: RepositoryMessageKind::Response(_),
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..
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}) = message
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{
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let _result = send(&mut socket, message).await;
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}
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}
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return Ok(());
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} else {
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match &repository.command {
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RepositoryMessageKind::Request(request) => match request.clone() {
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RepositoryRequest::CreateRepository(request) => {
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unimplemented!();
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}
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RepositoryRequest::RepositoryFileInspect(request) => {
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unimplemented!()
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}
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RepositoryRequest::RepositoryInfo(request) => {
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unimplemented!()
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}
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RepositoryRequest::IssuesCount(request) => {
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unimplemented!()
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}
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RepositoryRequest::IssueLabels(request) => {
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unimplemented!()
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}
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RepositoryRequest::Issues(request) => {
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unimplemented!();
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}
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},
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RepositoryMessageKind::Response(_response) => {
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unreachable!()
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}
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}
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}
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}
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if let MessageKind::Authentication(authentication) = &message {
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match authentication {
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AuthenticationMessage::Request(request) => match request {
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AuthenticationRequest::AuthenticationToken(token) => {
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unimplemented!()
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}
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AuthenticationRequest::TokenExtension(request) => {
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unimplemented!()
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}
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AuthenticationRequest::RegisterAccount(request) => {
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unimplemented!()
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}
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},
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AuthenticationMessage::Response(_) => unreachable!(),
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}
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}
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if let MessageKind::Discovery(message) = &message {
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let mut backend = discovery_backend.lock().await;
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backend.try_handle(message).await?;
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return Ok(());
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}
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if let MessageKind::User(message) = &message {
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match &message.message {
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UserMessageKind::Request(request) => match request {
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UserMessageRequest::DisplayName(request) => {
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unimplemented!()
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}
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UserMessageRequest::DisplayImage(request) => {
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unimplemented!()
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}
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UserMessageRequest::Bio(request) => {
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unimplemented!()
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}
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UserMessageRequest::Repositories(request) => {
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unimplemented!()
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}
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},
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UserMessageKind::Response(_) => unreachable!(),
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}
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}
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Ok(())
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}
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async fn send_and_get_listener(
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message: MessageKind,
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listeners: &Arc<Mutex<Listeners>>,
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connections: &Arc<Mutex<Connections>>,
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) -> Receiver<MessageKind> {
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let (instance, user, repository): (Option<Instance>, Option<User>, Option<Repository>) =
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match &message {
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MessageKind::Handshake(_) => {
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todo!()
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}
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MessageKind::Repository(repository) => (None, None, Some(repository.target.clone())),
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MessageKind::Authentication(_) => todo!(),
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MessageKind::Discovery(_) => todo!(),
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MessageKind::User(user) => todo!(),
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MessageKind::Error(_) => todo!(),
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};
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let target = match (&instance, &user, &repository) {
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(Some(instance), _, _) => instance.clone(),
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(_, Some(user), _) => user.instance.clone(),
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(_, _, Some(repository)) => repository.instance.clone(),
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_ => unreachable!(),
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};
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let mut listeners = listeners.lock().await;
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let listener = listeners.add(instance, user, repository);
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drop(listeners);
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let connections = connections.lock().await;
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| 261 |
if let Some(connection) = connections.instance_connections.get(&target) {
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| 262 |
if let Err(_) = connection.sender.send(message) {
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error!("Error sending message.");
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}
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} else {
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error!("Unable to message {}, this is a bug.", target.url);
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panic!();
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}
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drop(connections);
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| 272 |
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listener
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| 274 |
}
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| 275 |
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| 276 |
async fn send<T: Serialize>(
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| 277 |
socket: &mut WebSocketStream<TcpStream>,
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| 278 |
message: T,
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| 279 |
) -> Result<(), Error> {
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| 280 |
socket
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| 281 |
.send(Message::Binary(serde_json::to_vec(&message)?))
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| 282 |
.await?;
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| 283 |
|
| 284 |
Ok(())
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| 285 |
}
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| 286 |
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| 287 |
#[derive(Debug, thiserror::Error)]
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| 288 |
#[error("handler did not handle")]
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| 289 |
pub struct HandlerUnhandled;
|
| 290 |
|
| 291 |
pub trait MessageHandling<A, M, R> {
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| 292 |
fn message_type() -> &'static str;
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| 293 |
}
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| 294 |
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| 295 |
impl<T1, F, M, R> MessageHandling<(T1,), M, R> for F
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| 296 |
where
|
| 297 |
F: FnOnce(T1) -> R,
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| 298 |
T1: Serialize + DeserializeOwned,
|
| 299 |
{
|
| 300 |
fn message_type() -> &'static str {
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| 301 |
type_name::<T1>()
|
| 302 |
}
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| 303 |
}
|
| 304 |
|
| 305 |
impl<T1, T2, F, M, R> MessageHandling<(T1, T2), M, R> for F
|
| 306 |
where
|
| 307 |
F: FnOnce(T1, T2) -> R,
|
| 308 |
T1: Serialize + DeserializeOwned,
|
| 309 |
{
|
| 310 |
fn message_type() -> &'static str {
|
| 311 |
type_name::<T1>()
|
| 312 |
}
|
| 313 |
}
|
| 314 |
|
| 315 |
impl<T1, T2, T3, F, M, R> MessageHandling<(T1, T2, T3), M, R> for F
|
| 316 |
where
|
| 317 |
F: FnOnce(T1, T2, T3) -> R,
|
| 318 |
T1: Serialize + DeserializeOwned,
|
| 319 |
{
|
| 320 |
fn message_type() -> &'static str {
|
| 321 |
type_name::<T1>()
|
| 322 |
}
|
| 323 |
}
|
| 324 |
|
| 325 |
impl<T1, T2, T3, T4, F, M, R> MessageHandling<(T1, T2, T3, T4), M, R> for F
|
| 326 |
where
|
| 327 |
F: FnOnce(T1, T2, T3, T4) -> R,
|
| 328 |
T1: Serialize + DeserializeOwned,
|
| 329 |
{
|
| 330 |
fn message_type() -> &'static str {
|
| 331 |
type_name::<T1>()
|
| 332 |
}
|
| 333 |
}
|
| 334 |
|