rust/hedgewars-server/src/server/handlers.rs
author alfadur
Thu, 07 Feb 2019 18:04:53 +0300
changeset 14695 216d39de1a44
parent 14694 25c564f77b7d
child 14696 8a45c90f4580
permissions -rw-r--r--
fix official server build & bump dependencies
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use mio;
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use std::{io, io::Write};
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use super::{
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    actions::{Destination, DestinationRoom},
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    core::HWServer,
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    coretypes::ClientId,
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};
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use crate::{
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    protocol::messages::{HWProtocolMessage, HWServerMessage, HWServerMessage::*},
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    server::actions::PendingMessage,
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    utils,
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};
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use base64::encode;
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use log::*;
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use rand::{thread_rng, RngCore};
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mod checker;
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mod common;
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mod inroom;
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mod lobby;
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mod loggingin;
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use self::loggingin::LoginResult;
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pub struct Response {
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    client_id: ClientId,
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    messages: Vec<PendingMessage>,
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}
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impl Response {
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    pub fn new(client_id: ClientId) -> Self {
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        Self {
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            client_id,
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            messages: vec![],
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        }
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    }
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    #[inline]
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    pub fn is_empty(&self) -> bool {
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        self.messages.is_empty()
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    }
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    #[inline]
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    pub fn len(&self) -> usize {
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        self.messages.len()
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    }
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    #[inline]
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    pub fn client_id(&self) -> ClientId {
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        self.client_id
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    }
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    #[inline]
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    pub fn add(&mut self, message: PendingMessage) {
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        self.messages.push(message)
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    }
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    pub fn extract_messages<'a, 'b: 'a>(
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        &'b mut self,
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        server: &'a HWServer,
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    ) -> impl Iterator<Item = (Vec<ClientId>, HWServerMessage)> + 'a {
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        let client_id = self.client_id;
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        self.messages.drain(..).map(move |m| {
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            let ids = get_recipients(server, client_id, &m.destination);
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            (ids, m.message)
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        })
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    }
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}
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impl Extend<PendingMessage> for Response {
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    fn extend<T: IntoIterator<Item = PendingMessage>>(&mut self, iter: T) {
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        for msg in iter {
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            self.add(msg)
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        }
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    }
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}
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fn get_recipients(
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    server: &HWServer,
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    client_id: ClientId,
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    destination: &Destination,
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) -> Vec<ClientId> {
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    let mut ids = match *destination {
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        Destination::ToSelf => vec![client_id],
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        Destination::ToId(id) => vec![id],
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        Destination::ToAll {
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            room_id: DestinationRoom::Lobby,
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            ..
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        } => server.lobby_clients(),
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        Destination::ToAll {
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            room_id: DestinationRoom::Room(id),
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            ..
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        } => server.room_clients(id),
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        Destination::ToAll {
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            protocol: Some(proto),
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            ..
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        } => server.protocol_clients(proto),
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        Destination::ToAll { .. } => server.clients.iter().map(|(id, _)| id).collect::<Vec<_>>(),
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    };
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    if let Destination::ToAll {
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        skip_self: true, ..
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    } = destination
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    {
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        if let Some(index) = ids.iter().position(|id| *id == client_id) {
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            ids.remove(index);
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        }
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    }
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    ids
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}
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pub fn handle(
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    server: &mut HWServer,
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    client_id: ClientId,
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    response: &mut Response,
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    message: HWProtocolMessage,
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) {
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    match message {
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        HWProtocolMessage::Ping => response.add(Pong.send_self()),
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        HWProtocolMessage::Malformed => warn!("Malformed/unknown message"),
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        HWProtocolMessage::Empty => warn!("Empty message"),
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        _ => {
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            if server.anteroom.clients.contains(client_id) {
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                match loggingin::handle(&mut server.anteroom, client_id, response, message) {
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                    LoginResult::Unchanged => (),
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                    LoginResult::Complete => {
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                        if let Some(client) = server.anteroom.remove_client(client_id) {
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                            server.add_client(client_id, client);
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                        }
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                    }
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                    LoginResult::Exit => {
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                        server.anteroom.remove_client(client_id);
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                    }
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                }
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            } else {
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                match message {
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                    HWProtocolMessage::Quit(Some(msg)) => {
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                        common::remove_client(server, response, "User quit: ".to_string() + &msg);
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                    }
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                    HWProtocolMessage::Quit(None) => {
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                        common::remove_client(server, response, "User quit".to_string());
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                    }
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                    _ => match server.clients[client_id].room_id {
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                        None => lobby::handle(server, client_id, response, message),
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                        Some(room_id) => {
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                            inroom::handle(server, client_id, response, room_id, message)
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                        }
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                    },
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                }
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            }
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        }
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    }
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}
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pub fn handle_client_accept(server: &mut HWServer, client_id: ClientId, response: &mut Response) {
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    let mut salt = [0u8; 18];
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    thread_rng().fill_bytes(&mut salt);
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    server.anteroom.add_client(client_id, encode(&salt));
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    response.add(HWServerMessage::Connected(utils::PROTOCOL_VERSION).send_self());
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}
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pub fn handle_client_loss(server: &mut HWServer, client_id: ClientId, response: &mut Response) {
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    common::remove_client(server, response, "Connection reset".to_string());
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}