diff -r 6843c4551cde -r 06672690d71b rust/hedgewars-server/src/server/handlers/inroom.rs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rust/hedgewars-server/src/server/handlers/inroom.rs	Mon Dec 10 22:44:46 2018 +0100
@@ -0,0 +1,486 @@
+use mio;
+
+use crate::{
+    server::{
+        coretypes::{
+            ClientId, RoomId, Voting, VoteType, GameCfg,
+            MAX_HEDGEHOGS_PER_TEAM
+        },
+        core::HWServer,
+        room::{HWRoom, RoomFlags},
+        actions::{Action, Action::*}
+    },
+    protocol::messages::{
+        HWProtocolMessage,
+        HWServerMessage::*,
+        server_chat
+    },
+    utils::is_name_illegal
+};
+use std::{
+    mem::swap
+};
+use base64::{encode, decode};
+use super::common::rnd_reply;
+use log::*;
+
+#[derive(Clone)]
+struct ByMsg<'a> {
+    messages: &'a[u8]
+}
+
+impl <'a> Iterator for ByMsg<'a> {
+    type Item = &'a[u8];
+
+    fn next(&mut self) -> Option<<Self as Iterator>::Item> {
+        if let Some(size) = self.messages.get(0) {
+            let (msg, next) = self.messages.split_at(*size as usize + 1);
+            self.messages = next;
+            Some(msg)
+        } else {
+            None
+        }
+    }
+}
+
+fn by_msg(source: &[u8]) -> ByMsg {
+    ByMsg {messages: source}
+}
+
+const VALID_MESSAGES: &[u8] =
+    b"M#+LlRrUuDdZzAaSjJ,NpPwtgfhbc12345\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8A";
+const NON_TIMED_MESSAGES: &[u8] = b"M#hb";
+
+#[cfg(canhazslicepatterns)]
+fn is_msg_valid(msg: &[u8], team_indices: &[u8]) -> bool {
+    match msg {
+        [size, typ, body..] => VALID_MESSAGES.contains(typ)
+            && match body {
+                [1...MAX_HEDGEHOGS_PER_TEAM, team, ..] if *typ == b'h' =>
+                    team_indices.contains(team),
+                _ => *typ != b'h'
+            },
+        _ => false
+    }
+}
+
+fn is_msg_valid(msg: &[u8], _team_indices: &[u8]) -> bool {
+    if let Some(typ) = msg.get(1) {
+        VALID_MESSAGES.contains(typ)
+    } else {
+        false
+    }
+}
+
+fn is_msg_empty(msg: &[u8]) -> bool {
+    msg.get(1).filter(|t| **t == b'+').is_some()
+}
+
+fn is_msg_timed(msg: &[u8]) -> bool {
+    msg.get(1).filter(|t| !NON_TIMED_MESSAGES.contains(t)).is_some()
+}
+
+fn voting_description(kind: &VoteType) -> String {
+    format!("New voting started: {}", match kind {
+        VoteType::Kick(nick) => format!("kick {}", nick),
+        VoteType::Map(name) => format!("map {}", name.as_ref().unwrap()),
+        VoteType::Pause => "pause".to_string(),
+        VoteType::NewSeed => "new seed".to_string(),
+        VoteType::HedgehogsPerTeam(number) => format!("hedgehogs per team: {}", number)
+    })
+}
+
+fn room_message_flag(msg: &HWProtocolMessage) -> RoomFlags {
+    use crate::protocol::messages::HWProtocolMessage::*;
+    match msg {
+        ToggleRestrictJoin => RoomFlags::RESTRICTED_JOIN,
+        ToggleRestrictTeams => RoomFlags::RESTRICTED_TEAM_ADD,
+        ToggleRegisteredOnly => RoomFlags::RESTRICTED_UNREGISTERED_PLAYERS,
+        _ => RoomFlags::empty()
+    }
+}
+
+pub fn handle(server: &mut HWServer, client_id: ClientId, room_id: RoomId, message: HWProtocolMessage) {
+    use crate::protocol::messages::HWProtocolMessage::*;
+    match message {
+        Part(None) => server.react(client_id, vec![
+            MoveToLobby("part".to_string())]),
+        Part(Some(msg)) => server.react(client_id, vec![
+            MoveToLobby(format!("part: {}", msg))]),
+        Chat(msg) => {
+            let actions = {
+                let c = &mut server.clients[client_id];
+                let chat_msg = ChatMsg {nick: c.nick.clone(), msg};
+                vec![chat_msg.send_all().in_room(room_id).but_self().action()]
+            };
+            server.react(client_id, actions);
+        },
+        Fix => {
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                if c.is_admin() { r.set_is_fixed(true) }
+            }
+        }
+        Unfix => {
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                if c.is_admin() { r.set_is_fixed(false) }
+            }
+        }
+        Greeting(text) => {
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                if c.is_admin() || c.is_master() && !r.is_fixed() {
+                    r.greeting = text
+                }
+            }
+        }
+        RoomName(new_name) => {
+            let actions =
+                if is_name_illegal(&new_name) {
+                    vec![Warn("Illegal room name! A room name 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())]
+                } else if server.rooms[room_id].is_fixed() {
+                    vec![Warn("Access denied.".to_string())]
+                } else if server.has_room(&new_name) {
+                    vec![Warn("A room with the same name already exists.".to_string())]
+                } else {
+                    let mut old_name = new_name.clone();
+                    swap(&mut server.rooms[room_id].name, &mut old_name);
+                    vec![SendRoomUpdate(Some(old_name))]
+                };
+            server.react(client_id, actions);
+        },
+        ToggleReady => {
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                let flags = if c.is_ready() {
+                    r.ready_players_number -= 1;
+                    "-r"
+                } else {
+                    r.ready_players_number += 1;
+                    "+r"
+                };
+
+                let msg = if c.protocol_number < 38 {
+                    LegacyReady(c.is_ready(), vec![c.nick.clone()])
+                } else {
+                    ClientFlags(flags.to_string(), vec![c.nick.clone()])
+                };
+
+                let mut v = vec![msg.send_all().in_room(r.id).action()];
+
+                if r.is_fixed() && r.ready_players_number == r.players_number {
+                    v.push(StartRoomGame(r.id))
+                }
+
+                c.set_is_ready(!c.is_ready());
+                server.react(client_id, v);
+            }
+        }
+        AddTeam(info) => {
+            let mut actions = Vec::new();
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                if r.teams.len() >= r.team_limit as usize {
+                    actions.push(Warn("Too many teams!".to_string()))
+                } else if r.addable_hedgehogs() == 0 {
+                    actions.push(Warn("Too many hedgehogs!".to_string()))
+                } else if r.find_team(|t| t.name == info.name) != None {
+                    actions.push(Warn("There's already a team with same name in the list.".to_string()))
+                } else if r.game_info.is_some() {
+                    actions.push(Warn("Joining not possible: Round is in progress.".to_string()))
+                } else if r.is_team_add_restricted() {
+                    actions.push(Warn("This room currently does not allow adding new teams.".to_string()));
+                } else {
+                    let team = r.add_team(c.id, *info, c.protocol_number < 42);
+                    c.teams_in_game += 1;
+                    c.clan = Some(team.color);
+                    actions.push(TeamAccepted(team.name.clone())
+                        .send_self().action());
+                    actions.push(TeamAdd(HWRoom::team_info(&c, team))
+                        .send_all().in_room(room_id).but_self().action());
+                    actions.push(TeamColor(team.name.clone(), team.color)
+                        .send_all().in_room(room_id).action());
+                    actions.push(HedgehogsNumber(team.name.clone(), team.hedgehogs_number)
+                        .send_all().in_room(room_id).action());
+                    actions.push(SendRoomUpdate(None));
+                }
+            }
+            server.react(client_id, actions);
+        },
+        RemoveTeam(name) => {
+            let mut actions = Vec::new();
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                match r.find_team_owner(&name) {
+                    None =>
+                        actions.push(Warn("Error: The team you tried to remove does not exist.".to_string())),
+                    Some((id, _)) if id != client_id =>
+                        actions.push(Warn("You can't remove a team you don't own.".to_string())),
+                    Some((_, name)) => {
+                        c.teams_in_game -= 1;
+                        c.clan = r.find_team_color(c.id);
+                        actions.push(Action::RemoveTeam(name.to_string()));
+                    }
+                }
+            };
+            server.react(client_id, actions);
+        },
+        SetHedgehogsNumber(team_name, number) => {
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                let addable_hedgehogs = r.addable_hedgehogs();
+                let actions = if let Some((_, team)) = r.find_team_and_owner_mut(|t| t.name == team_name) {
+                    if !c.is_master() {
+                        vec![ProtocolError("You're not the room master!".to_string())]
+                    } else if number < 1 || number > MAX_HEDGEHOGS_PER_TEAM
+                           || number > addable_hedgehogs + team.hedgehogs_number {
+                        vec![HedgehogsNumber(team.name.clone(), team.hedgehogs_number)
+                            .send_self().action()]
+                    } else {
+                        team.hedgehogs_number = number;
+                        vec![HedgehogsNumber(team.name.clone(), number)
+                            .send_all().in_room(room_id).but_self().action()]
+                    }
+                } else {
+                    vec![(Warn("No such team.".to_string()))]
+                };
+                server.react(client_id, actions);
+            }
+        },
+        SetTeamColor(team_name, color) => {
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                let mut owner_id = None;
+                let actions = if let Some((owner, team)) = r.find_team_and_owner_mut(|t| t.name == team_name) {
+                    if !c.is_master() {
+                        vec![ProtocolError("You're not the room master!".to_string())]
+                    } else if false  {
+                        Vec::new()
+                    } else {
+                        owner_id = Some(owner);
+                        team.color = color;
+                        vec![TeamColor(team.name.clone(), color)
+                            .send_all().in_room(room_id).but_self().action()]
+                    }
+                } else {
+                    vec![(Warn("No such team.".to_string()))]
+                };
+
+                if let Some(id) = owner_id {
+                    server.clients[id].clan = Some(color);
+                }
+
+                server.react(client_id, actions);
+            };
+        },
+        Cfg(cfg) => {
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                let actions = if r.is_fixed() {
+                    vec![Warn("Access denied.".to_string())]
+                } else if !c.is_master() {
+                    vec![ProtocolError("You're not the room master!".to_string())]
+                } else {
+                    let cfg = match cfg {
+                        GameCfg::Scheme(name, mut values) => {
+                            if c.protocol_number == 49 && values.len() >= 2 {
+                                let mut s = "X".repeat(50);
+                                s.push_str(&values.pop().unwrap());
+                                values.push(s);
+                            }
+                            GameCfg::Scheme(name, values)
+                        }
+                        cfg => cfg
+                    };
+
+                    let v = vec![cfg.to_server_msg()
+                        .send_all().in_room(r.id).but_self().action()];
+                    r.set_config(cfg);
+                    v
+                };
+                server.react(client_id, actions);
+            }
+        }
+        Save(name, location) => {
+            let actions = vec![server_chat(format!("Room config saved as {}", name))
+                .send_all().in_room(room_id).action()];
+            server.rooms[room_id].save_config(name, location);
+            server.react(client_id, actions);
+        }
+        SaveRoom(filename) => {
+            if server.clients[client_id].is_admin() {
+                let actions = match server.rooms[room_id].get_saves() {
+                    Ok(text) => match server.io.write_file(&filename, &text) {
+                        Ok(_) => vec![server_chat("Room configs saved successfully.".to_string())
+                            .send_self().action()],
+                        Err(e) => {
+                            warn!("Error while writing the config file \"{}\": {}", filename, e);
+                            vec![Warn("Unable to save the room configs.".to_string())]
+                        }
+                    }
+                    Err(e) => {
+                        warn!("Error while serializing the room configs: {}", e);
+                        vec![Warn("Unable to serialize the room configs.".to_string())]
+                    }
+                };
+                server.react(client_id, actions);
+            }
+        }
+        LoadRoom(filename) => {
+            if server.clients[client_id].is_admin() {
+                let actions = match server.io.read_file(&filename) {
+                    Ok(text) => match server.rooms[room_id].set_saves(&text) {
+                        Ok(_) => vec![server_chat("Room configs loaded successfully.".to_string())
+                            .send_self().action()],
+                        Err(e) => {
+                            warn!("Error while deserializing the room configs: {}", e);
+                            vec![Warn("Unable to deserialize the room configs.".to_string())]
+                        }
+                    }
+                    Err(e) => {
+                        warn!("Error while reading the config file \"{}\": {}", filename, e);
+                        vec![Warn("Unable to load the room configs.".to_string())]
+                    }
+                };
+                server.react(client_id, actions);
+            }
+        }
+        Delete(name) => {
+            let actions = if !server.rooms[room_id].delete_config(&name) {
+                vec![Warn(format!("Save doesn't exist: {}", name))]
+            } else {
+                vec![server_chat(format!("Room config {} has been deleted", name))
+                    .send_all().in_room(room_id).action()]
+            };
+            server.react(client_id, actions);
+        }
+        CallVote(None) => {
+            server.react(client_id, vec![
+                server_chat("Available callvote commands: kick <nickname>, map <name>, pause, newseed, hedgehogs <number>".to_string())
+                    .send_self().action()])
+        }
+        CallVote(Some(kind)) => {
+            let is_in_game = server.rooms[room_id].game_info.is_some();
+            let error = match &kind {
+                VoteType::Kick(nick) => {
+                    if server.find_client(&nick).filter(|c| c.room_id == Some(room_id)).is_some() {
+                        None
+                    } else {
+                        Some("/callvote kick: No such user!".to_string())
+                    }
+                },
+                VoteType::Map(None) => {
+                    let names: Vec<_> = server.rooms[room_id].saves.keys().cloned().collect();
+                    if names.is_empty() {
+                        Some("/callvote map: No maps saved in this room!".to_string())
+                    } else {
+                        Some(format!("Available maps: {}", names.join(", ")))
+                    }
+                },
+                VoteType::Map(Some(name)) => {
+                    if server.rooms[room_id].saves.get(&name[..]).is_some() {
+                        None
+                    } else {
+                        Some("/callvote map: No such map!".to_string())
+                    }
+                },
+                VoteType::Pause => {
+                    if is_in_game {
+                        None
+                    } else {
+                        Some("/callvote pause: No game in progress!".to_string())
+                    }
+                },
+                VoteType::NewSeed => {
+                    None
+                },
+                VoteType::HedgehogsPerTeam(number) => {
+                    match number {
+                        1...MAX_HEDGEHOGS_PER_TEAM => None,
+                        _ => Some("/callvote hedgehogs: Specify number from 1 to 8.".to_string())
+                    }
+                },
+            };
+            match error {
+                None => {
+                    let msg = voting_description(&kind);
+                    let voting = Voting::new(kind, server.room_clients(client_id));
+                    server.rooms[room_id].voting = Some(voting);
+                    server.react(client_id, vec![
+                        server_chat(msg).send_all().in_room(room_id).action(),
+                        AddVote{ vote: true, is_forced: false}]);
+                }
+                Some(msg) => {
+                    server.react(client_id, vec![
+                        server_chat(msg).send_self().action()])
+                }
+            }
+        }
+        Vote(vote) => {
+            server.react(client_id, vec![AddVote{ vote, is_forced: false }]);
+        }
+        ForceVote(vote) => {
+            let is_forced = server.clients[client_id].is_admin();
+            server.react(client_id, vec![AddVote{ vote, is_forced }]);
+        }
+        ToggleRestrictJoin | ToggleRestrictTeams | ToggleRegisteredOnly  => {
+            if server.clients[client_id].is_master() {
+                server.rooms[room_id].flags.toggle(room_message_flag(&message));
+            }
+            server.react(client_id, vec![SendRoomUpdate(None)]);
+        }
+        StartGame => {
+            server.react(client_id, vec![StartRoomGame(room_id)]);
+        }
+        EngineMessage(em) => {
+            let mut actions = Vec::new();
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                if c.teams_in_game > 0 {
+                    let decoding = decode(&em[..]).unwrap();
+                    let messages = by_msg(&decoding);
+                    let valid = messages.filter(|m| is_msg_valid(m, &c.team_indices));
+                    let non_empty = valid.clone().filter(|m| !is_msg_empty(m));
+                    let sync_msg = valid.clone().filter(|m| is_msg_timed(m))
+                        .last().map(|m| if is_msg_empty(m) {Some(encode(m))} else {None});
+
+                    let em_response = encode(&valid.flat_map(|msg| msg).cloned().collect::<Vec<_>>());
+                    if !em_response.is_empty() {
+                        actions.push(ForwardEngineMessage(vec![em_response])
+                            .send_all().in_room(r.id).but_self().action());
+                    }
+                    let em_log = encode(&non_empty.flat_map(|msg| msg).cloned().collect::<Vec<_>>());
+                    if let Some(ref mut info) = r.game_info {
+                        if !em_log.is_empty() {
+                            info.msg_log.push(em_log);
+                        }
+                        if let Some(msg) = sync_msg {
+                            info.sync_msg = msg;
+                        }
+                    }
+                }
+            }
+            server.react(client_id, actions)
+        }
+        RoundFinished => {
+            let mut actions = Vec::new();
+            if let (c, Some(r)) = server.client_and_room(client_id) {
+                if c.is_in_game() {
+                    c.set_is_in_game(false);
+                    actions.push(ClientFlags("-g".to_string(), vec![c.nick.clone()]).
+                        send_all().in_room(r.id).action());
+                    if r.game_info.is_some() {
+                        for team in r.client_teams(c.id) {
+                            actions.push(SendTeamRemovalMessage(team.name.clone()));
+                        }
+                    }
+                }
+            }
+            server.react(client_id, actions)
+        },
+        Rnd(v) => {
+            let result = rnd_reply(&v);
+            let mut echo = vec!["/rnd".to_string()];
+            echo.extend(v.into_iter());
+            let chat_msg = ChatMsg {
+                nick: server.clients[client_id].nick.clone(),
+                msg: echo.join(" ")
+            };
+            server.react(client_id, vec![
+                chat_msg.send_all().in_room(room_id).action(),
+                result.send_all().in_room(room_id).action()])
+        },
+        _ => warn!("Unimplemented!")
+    }
+}