rust/hedgewars-server/src/server/handlers/loggingin.rs
author alfadur <mail@none>
Sat, 02 Feb 2019 15:06:39 +0300
changeset 14676 455865ccd36c
parent 14462 98ef2913ec73
child 14677 6e6632068a33
permissions -rw-r--r--
Server action refactoring part 2 of N
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use mio;
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use crate::{
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    protocol::messages::{HWProtocolMessage, HWServerMessage::*},
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    server::{
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        actions::{Action, Action::*},
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        client::HWClient,
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        core::HWServer,
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        coretypes::ClientId,
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    },
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    utils::is_name_illegal,
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};
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use log::*;
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#[cfg(feature = "official-server")]
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use openssl::sha::sha1;
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use std::fmt::{Formatter, LowerHex};
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#[derive(PartialEq)]
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struct Sha1Digest([u8; 20]);
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impl LowerHex for Sha1Digest {
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    fn fmt(&self, f: &mut Formatter) -> Result<(), std::fmt::Error> {
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        for byte in &self.0 {
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            write!(f, "{:02x}", byte)?;
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        }
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        Ok(())
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    }
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}
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#[cfg(feature = "official-server")]
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fn get_hash(client: &HWClient, salt1: &str, salt2: &str) -> Sha1Digest {
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    let s = format!(
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        "{}{}{}{}{}",
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        salt1, salt2, client.web_password, client.protocol_number, "!hedgewars"
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    );
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    Sha1Digest(sha1(s.as_bytes()))
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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 super::Response,
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    message: HWProtocolMessage,
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) {
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    match message {
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        HWProtocolMessage::Nick(nick) => {
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            let client = &mut server.clients[client_id];
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            debug!("{} {}", nick, is_name_illegal(&nick));
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            let actions = if client.room_id != None {
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                unreachable!()
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            } else if !client.nick.is_empty() {
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                vec![ProtocolError("Nickname already provided.".to_string())]
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            } else if is_name_illegal(&nick) {
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                vec![ByeClient("Illegal nickname! Nicknames must be between 1-40 characters long, must not have a trailing or leading space and must not have any of these characters: $()*+?[]^{|}".to_string())]
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            } else {
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                client.nick = nick.clone();
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                vec![Nick(nick).send_self().action(), CheckRegistered]
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            };
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            server.react(client_id, actions);
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        }
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        HWProtocolMessage::Proto(proto) => {
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            let client = &mut server.clients[client_id];
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            let actions = if client.protocol_number != 0 {
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                vec![ProtocolError("Protocol already known.".to_string())]
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            } else if proto == 0 {
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                vec![ProtocolError("Bad number.".to_string())]
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            } else {
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                client.protocol_number = proto;
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                vec![Proto(proto).send_self().action(), CheckRegistered]
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            };
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            server.react(client_id, actions);
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        }
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        #[cfg(feature = "official-server")]
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        HWProtocolMessage::Password(hash, salt) => {
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            let c = &server.clients[client_id];
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            let client_hash = get_hash(c, &salt, &c.server_salt);
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            let server_hash = get_hash(c, &c.server_salt, &salt);
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            let actions = if client_hash == server_hash {
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                vec![
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                    ServerAuth(format!("{:x}", server_hash))
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                        .send_self()
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                        .action(),
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                    JoinLobby,
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                ]
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            } else {
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                vec![ByeClient("Authentication failed".to_string())]
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            };
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            server.react(client_id, actions);
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        }
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        #[cfg(feature = "official-server")]
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        HWProtocolMessage::Checker(protocol, nick, password) => {
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            let c = &mut server.clients[client_id];
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            c.nick = nick;
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            c.web_password = password;
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            c.set_is_checker(true);
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        }
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        _ => warn!("Incorrect command in logging-in state"),
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    }
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}