mirror of
https://github.com/Dingo-Shenanigans/ReSkate.git
synced 2026-10-17 16:17:06 +02:00
AyeZeeBB
8044c88373
A hacked game was resizing its skateboard and reporting it at another player's position, so everyone saw an oversized board riding on them, and with player collision on it knocked them about. A skateboard is now held to within 10% of its size, apart from the limit on resized body parts: on a dedicated server when its scale limit is on, and in every player's game whatever sent the pose. Another player's board is solid only within 3 m of its own skater; one further off is seen and not felt. Dedicated servers also check for a board kept on another player (Server/board_check.h): one away from its own skater that stays beside one other player while that player travels 8 m over at least 3 seconds. The board is then no longer passed on to the others until it has behaved for half a minute, and the log and the admins in the game are told who. New setting anti_cheat.pinned_board and command board-check: off | warn (default) | kick.
778 lines
43 KiB
C++
778 lines
43 KiB
C++
#include "server_config.h"
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#include "Engine/Core/Json/json.h"
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#include "Engine/Core/Platform/path_text.h"
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#include "Extension/Multiplayer/Net/protocol.h"
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#include "Engine/Game/World/world_names.h"
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#include <algorithm>
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#include <initializer_list>
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#include <array>
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#include <cctype>
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#include <fstream>
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#include <sstream>
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#include <stdexcept>
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namespace dingosdk::server {
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namespace {
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std::string placement_text(ObjectPlacement policy) {
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return policy == ObjectPlacement::everyone ? "everyone" : policy == ObjectPlacement::host_only ? "admins" : "nobody";
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}
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// The config file as it is written: sections, and the settings in each, in the order an owner
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// reads them (a Json object alone would put them in alphabetical order).
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struct Layout {
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std::vector<std::string> names;
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std::vector<Layout> members;
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Json value;
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bool leaf{};
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Layout §ion(std::string name) {
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names.push_back(std::move(name));
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return members.emplace_back();
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}
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void set(std::string name, Json json) {
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names.push_back(std::move(name));
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auto &member = members.emplace_back();
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member.value = std::move(json);
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member.leaf = true;
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}
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};
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void write(std::string &out, const Layout &layout, std::size_t depth) {
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const std::string inner(2 * (depth + 1), ' ');
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out += "{\n";
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for (std::size_t i = 0; i < layout.names.size(); ++i) {
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out += inner + Json(layout.names[i]).dump() + ": ";
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if (layout.members[i].leaf) {
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// A list or an object of its own spans lines: each goes in by this setting's depth.
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for (const char c : layout.members[i].value.dump(2)) {
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out += c;
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if (c == '\n') out += inner;
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}
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} else {
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write(out, layout.members[i], depth + 1);
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}
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out += i + 1 < layout.names.size() ? ",\n" : "\n";
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}
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out += std::string(2 * depth, ' ') + "}";
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}
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Layout layout(const ServerConfig &c) {
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// SteamID64s are written as strings: JSON readers often lose 64-bit precision.
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const auto ids = [](const std::vector<std::uint64_t> &list) {
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auto out = Json::array();
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for (const auto id : list) out.push_back(std::to_string(id));
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return out;
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};
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Layout root;
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auto &server = root.section("server");
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server.set("name", c.name);
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server.set("password", c.password);
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server.set("welcome_message", c.welcome);
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server.set("chat_color", c.chat_color);
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server.set("chat_text_color", c.chat_text_color);
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server.set("listed", c.listed);
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server.set("max_players", c.max_players);
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server.set("port", static_cast<unsigned>(c.port));
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server.set("query_port", static_cast<unsigned>(c.query_port));
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server.set("steam_token", c.steam_token);
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server.set("auto_update", c.auto_update);
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server.set("activity_log", c.activity_log);
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auto &access = root.section("access");
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access.set("admins", ids(c.admins));
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access.set("reserved_players_slots", ids(c.reserved));
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access.set("use_global_bans", c.global_bans);
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auto &maps = root.section("maps");
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maps.set("map", c.map);
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auto pool = Json::array();
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for (const auto &map : c.map_pool) pool.push_back(map);
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maps.set("pool", std::move(pool));
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maps.set("rotation_minutes", c.map_rotation);
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auto parks = Json::object();
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for (unsigned lot = 0; lot < park_lots.size(); ++lot) parks[park_lots[lot].key] = c.parks[lot];
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maps.set("parks", std::move(parks));
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maps.set("world_layer_sync", c.world_layer_sync);
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auto layers = Json::object();
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for (const auto &[key, mode] : c.layers) layers[key] = mode;
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maps.set("layers", std::move(layers));
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auto &players = root.section("players");
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players.set("allow_boosts", c.boosts);
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players.set("allow_no_bail", c.no_bail);
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players.set("allow_noclip", c.noclip);
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players.set("allow_parties", c.parties);
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players.set("party_size", c.party_size);
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players.set("afk_kick_minutes", c.afk_kick);
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players.set("word_warnings", c.word_warnings);
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players.set("allow_voice_chat", c.voice_chat);
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players.set("voice_range", static_cast<double>(c.voice_range));
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players.set("object_placement", placement_text(c.object_placement));
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players.set("object_limit", c.object_limit);
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players.set("allow_object_scaling", c.object_scaling);
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players.set("sync_effects", c.sync_effects);
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players.set("announce_throwdowns", c.announce_throwdowns);
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auto &anti_cheat = root.section("anti_cheat");
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anti_cheat.set("speed_hack", c.speed_check);
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anti_cheat.set("pinned_board", c.board_check);
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anti_cheat.set("modified_scoring", c.score_check);
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auto allowed = Json::array();
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for (const auto fingerprint : c.score_allow) allowed.push_back(scoring_text(fingerprint));
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anti_cheat.set("allowed_scoring_mods", std::move(allowed));
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anti_cheat.set("enforce_tuning", c.enforce_tuning);
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anti_cheat.set("bone_scale_limit", c.bone_scale_limit);
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anti_cheat.set("bone_reach_limit", c.bone_reach_limit);
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auto &network = root.section("network");
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network.set("use_steam_relay", c.use_steam_relay);
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network.set("send_rate", c.send_rate);
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network.set("crowd_budget", c.crowd_budget);
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network.set("pack_ms", c.pack_ms);
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network.set("threads", c.threads);
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network.set("finger_distance", c.finger_distance);
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auto &distances = network.section("distances");
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distances.set("full_rate_return", c.distances.full_rate_return);
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distances.set("half_rate_start", c.distances.half_rate_start);
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distances.set("half_rate_return", c.distances.half_rate_return);
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distances.set("low_rate_start", c.distances.low_rate_start);
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network.set("steam_debug", c.steam_debug);
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auto &votes = root.section("votes");
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const auto vote = [&](const char *name, const VoteSetting &v) {
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auto &item = votes.section(name);
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item.set("enabled", v.enabled);
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item.set("percent", v.percent);
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item.set("seconds", v.seconds);
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item.set("cooldown_seconds", v.cooldown);
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item.set("min_players", v.min_players);
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};
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vote("map", c.votes.map);
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vote("kick", c.votes.kick);
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vote("time_of_day", c.votes.time);
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votes.set("seconds", c.votes.seconds);
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votes.set("cooldown_seconds", c.votes.cooldown);
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votes.set("starter_votes_yes", c.votes.starter_votes_yes);
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votes.set("polls", c.votes.polls);
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votes.set("poll_seconds", c.votes.poll_seconds);
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auto custom = Json::array();
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for (const auto &v : c.votes.custom) {
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auto item = Json::object();
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item["name"] = v.name;
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item["description"] = v.description;
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item["command"] = v.command;
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auto choices = Json::array();
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for (const auto &choice : v.choices) choices.push_back(choice);
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item["choices"] = std::move(choices);
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item["enabled"] = v.setting.enabled;
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item["percent"] = v.setting.percent;
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item["seconds"] = v.setting.seconds;
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item["cooldown_seconds"] = v.setting.cooldown;
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item["min_players"] = v.setting.min_players;
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custom.push_back(std::move(item));
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}
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votes.set("custom", std::move(custom));
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auto &announcements = root.section("announcements");
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auto messages = Json::array();
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for (const auto &message : c.announcements.messages) messages.push_back(message);
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announcements.set("messages", std::move(messages));
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announcements.set("interval_minutes", c.announcements.interval);
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auto commands = Json::array();
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for (const auto &command : c.commands) {
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auto item = Json::object();
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item["name"] = command.name;
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item["reply"] = command.reply;
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auto runs = Json::array();
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for (const auto &run : command.commands) runs.push_back(run);
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item["command"] = std::move(runs);
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item["admin"] = command.admin;
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commands.push_back(std::move(item));
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}
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root.set("commands", std::move(commands));
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return root;
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}
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// Bans have a file of their own, beside the config.
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Json bans_json(const ServerConfig &c) {
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auto bans = Json::array();
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for (const auto &ban : c.bans) {
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auto row = Json::object();
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row["id"] = std::to_string(ban.id);
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row["name"] = ban.name;
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row["added"] = ban.added;
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bans.push_back(std::move(row));
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}
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return bans;
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}
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void write_file(const std::filesystem::path &file, const std::string &text) {
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if (file.has_parent_path()) std::filesystem::create_directories(file.parent_path());
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const auto temporary = std::filesystem::path(file).concat(".tmp");
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{
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std::ofstream out(temporary, std::ios::binary | std::ios::trunc);
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out << text << '\n';
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if (!out) throw std::runtime_error("Cannot write " + path_utf8(temporary));
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}
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std::filesystem::rename(temporary, file);
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}
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std::uint64_t steam_id(const Json &value) {
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if (value.is_string()) return std::stoull(value.string());
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return value.get<std::uint64_t>();
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}
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} // namespace
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ServerConfig load_config(const std::filesystem::path &file, std::vector<std::string> *added) {
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ServerConfig c;
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c.file = file;
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if (!std::filesystem::exists(file)) {
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save_config(c);
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return c;
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}
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std::stringstream text;
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{
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// Closed before any write-back: Windows cannot replace a file that is still open.
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std::ifstream in(file, std::ios::binary);
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text << in.rdbuf();
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}
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const auto root = Json::parse(text.str());
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if (!root.is_object()) throw std::runtime_error("The server config must be a JSON object.");
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// A setting is in its section under its name. A config from before the sections has it at the
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// top, under that name or an older one: it is read from there, and the file is written back
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// as it is laid out now. A setting found nowhere is new, and the owner is told of it.
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std::vector<std::string> missing;
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bool moved{};
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using Old = std::initializer_list<std::string_view>;
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const auto find = [&](std::string_view section, std::string_view key, Old old = {}) -> const Json * {
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if (root.contains(section) && root.at(section).is_object() && root.at(section).contains(key)) return &root.at(section).at(key);
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if (root.contains(key) && !root.at(key).is_null() && key != "votes") {
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moved = true;
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return &root.at(key);
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}
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for (const auto name : old)
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if (root.contains(name)) {
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moved = true;
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return &root.at(name);
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}
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missing.push_back(std::string(section) + "." + std::string(key));
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return nullptr;
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};
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const auto get = [&]<typename T>(std::string_view section, std::string_view key, T fallback, Old old = {}) {
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const auto *found = find(section, key, old);
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return found ? found->template get<T>() : fallback;
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};
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c.name = get("server", "name", c.name);
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c.password = get("server", "password", c.password);
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c.welcome = get("server", "welcome_message", c.welcome, {"welcome"});
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c.chat_color = get("server", "chat_color", c.chat_color);
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c.chat_text_color = get("server", "chat_text_color", c.chat_text_color);
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c.listed = get("server", "listed", c.listed);
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c.max_players = get("server", "max_players", c.max_players);
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// Checked here, not in config_error: once narrowed, 70000 is just port 4464, and the
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// next save would write that over the owner's typo.
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const auto read_port = [&](const char *key, std::uint16_t fallback) {
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const auto value = get("server", key, static_cast<unsigned>(fallback));
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if (value < 1 || value > 65535) throw std::runtime_error(std::string(key) + " must be 1 to 65535.");
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return static_cast<std::uint16_t>(value);
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};
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c.port = read_port("port", c.port);
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c.query_port = read_port("query_port", c.query_port);
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c.steam_token = get("server", "steam_token", c.steam_token);
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c.auto_update = get("server", "auto_update", c.auto_update);
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c.activity_log = get("server", "activity_log", c.activity_log);
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if (const auto *admins = find("access", "admins"); admins && admins->is_array())
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for (const auto &id : *admins) c.admins.push_back(steam_id(id));
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if (const auto *reserved = find("access", "reserved_players_slots", {"reserved"}); reserved && reserved->is_array())
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for (const auto &id : *reserved) c.reserved.push_back(steam_id(id));
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c.global_bans = get("access", "use_global_bans", c.global_bans, {"global_bans"});
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c.map = get("maps", "map", c.map);
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if (const auto *pool = find("maps", "pool", {"map_pool"}); pool && pool->is_array())
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for (const auto &map : *pool)
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if (map.is_string() && !map.string().empty()) c.map_pool.push_back(map.string());
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c.map_rotation = std::min(get("maps", "rotation_minutes", c.map_rotation, {"map_rotation_minutes"}), max_map_rotation);
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if (const auto *parks = find("maps", "parks"); parks && parks->is_object())
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for (unsigned lot = 0; lot < park_lots.size(); ++lot) c.parks[lot] = parks->value(park_lots[lot].key, c.parks[lot]);
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c.world_layer_sync = get("maps", "world_layer_sync", c.world_layer_sync);
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if (const auto *layers = find("maps", "layers"); layers && layers->is_object())
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for (const auto &[key, mode] : layers->items())
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if (mode.is_string()) c.layers[key] = mode.string();
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c.boosts = get("players", "allow_boosts", c.boosts, {"boosts"});
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c.no_bail = get("players", "allow_no_bail", c.no_bail, {"no_bail"});
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c.noclip = get("players", "allow_noclip", c.noclip, {"noclip"});
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c.parties = get("players", "allow_parties", c.parties, {"parties"});
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c.party_size = std::clamp(get("players", "party_size", c.party_size), 2U, 8U);
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c.afk_kick = get("players", "afk_kick_minutes", c.afk_kick);
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c.word_warnings = get("players", "word_warnings", c.word_warnings);
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c.voice_chat = get("players", "allow_voice_chat", c.voice_chat, {"voice_chat"});
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c.voice_range = get("players", "voice_range", c.voice_range);
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const auto placement = get("players", "object_placement", placement_text(c.object_placement));
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// On a dedicated server the protocol's "host only" means its admins.
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c.object_placement = placement == "nobody" ? ObjectPlacement::nobody
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: placement == "admins" || placement == "host" ? ObjectPlacement::host_only : ObjectPlacement::everyone;
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c.object_limit = get("players", "object_limit", c.object_limit);
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c.object_scaling = get("players", "allow_object_scaling", c.object_scaling);
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c.sync_effects = get("players", "sync_effects", c.sync_effects);
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c.announce_throwdowns = get("players", "announce_throwdowns", c.announce_throwdowns);
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c.speed_check = get("anti_cheat", "speed_hack", c.speed_check, {"speed_check"});
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if (c.speed_check != "off" && c.speed_check != "warn" && c.speed_check != "kick") c.speed_check = "warn";
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c.board_check = get("anti_cheat", "pinned_board", c.board_check);
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if (c.board_check != "off" && c.board_check != "warn" && c.board_check != "kick") c.board_check = "warn";
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c.score_check = get("anti_cheat", "modified_scoring", c.score_check, {"score_check"});
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if (c.score_check != "off" && c.score_check != "warn" && c.score_check != "kick") c.score_check = "warn";
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if (const auto *allowed = find("anti_cheat", "allowed_scoring_mods", {"score_allow"}); allowed && allowed->is_array())
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for (const auto &value : *allowed)
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if (value.is_string())
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if (const auto fingerprint = parse_scoring(value.string())) c.score_allow.push_back(*fingerprint);
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c.enforce_tuning = get("anti_cheat", "enforce_tuning", c.enforce_tuning);
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c.bone_scale_limit = get("anti_cheat", "bone_scale_limit", c.bone_scale_limit);
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c.bone_reach_limit = get("anti_cheat", "bone_reach_limit", c.bone_reach_limit);
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c.use_steam_relay = get("network", "use_steam_relay", c.use_steam_relay);
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c.send_rate = get("network", "send_rate", c.send_rate);
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c.crowd_budget = get("network", "crowd_budget", c.crowd_budget);
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c.pack_ms = get("network", "pack_ms", c.pack_ms);
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c.threads = get("network", "threads", c.threads);
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c.finger_distance = get("network", "finger_distance", c.finger_distance);
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if (const auto *d = find("network", "distances"); d && d->is_object()) {
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c.distances.full_rate_return = d->value("full_rate_return", c.distances.full_rate_return);
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c.distances.half_rate_start = d->value("half_rate_start", c.distances.half_rate_start);
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c.distances.half_rate_return = d->value("half_rate_return", c.distances.half_rate_return);
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c.distances.low_rate_start = d->value("low_rate_start", c.distances.low_rate_start);
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}
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c.steam_debug = get("network", "steam_debug", c.steam_debug);
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// Votes were a section from the start.
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const Json no_votes = Json::object();
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const auto &votes = root.contains("votes") && root.at("votes").is_object() ? root.at("votes") : no_votes;
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// A vote's own run time, cooldown and player minimum; 0 for the first two is "the votes'".
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const auto vote_limits = [](const Json &item, VoteSetting &v) {
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v.seconds = item.value("seconds", v.seconds);
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if (v.seconds) v.seconds = std::clamp(v.seconds, 10U, 300U);
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v.cooldown = std::min(item.value("cooldown_seconds", v.cooldown), 3600U);
|
|
v.min_players = std::clamp(item.value("min_players", v.min_players), 1U, static_cast<unsigned>(multiplayer::max_players - 1));
|
|
};
|
|
const auto read_vote = [&](const char *key, VoteSetting &v) {
|
|
if (!votes.contains(key) || !votes.at(key).is_object()) return missing.push_back(std::string("votes.") + key);
|
|
const auto &item = votes.at(key);
|
|
for (const char *added : {"seconds", "cooldown_seconds", "min_players"})
|
|
if (!item.contains(added)) missing.push_back(std::string("votes.") + key + "." + added);
|
|
v.enabled = item.value("enabled", v.enabled);
|
|
v.percent = std::clamp(item.value("percent", v.percent), 1U, 100U);
|
|
vote_limits(item, v);
|
|
};
|
|
read_vote("map", c.votes.map);
|
|
read_vote("kick", c.votes.kick);
|
|
read_vote("time_of_day", c.votes.time);
|
|
for (const char *key : {"seconds", "cooldown_seconds", "starter_votes_yes", "polls", "poll_seconds", "custom"})
|
|
if (!votes.contains(key)) missing.push_back(std::string("votes.") + key);
|
|
c.votes.seconds = std::clamp(votes.value("seconds", c.votes.seconds), 10U, 300U);
|
|
c.votes.cooldown = std::clamp(votes.value("cooldown_seconds", c.votes.cooldown), 0U, 3600U);
|
|
c.votes.starter_votes_yes = votes.value("starter_votes_yes", c.votes.starter_votes_yes);
|
|
c.votes.polls = votes.value("polls", c.votes.polls);
|
|
if (c.votes.polls != "off" && c.votes.polls != "admins" && c.votes.polls != "everyone") c.votes.polls = "admins";
|
|
c.votes.poll_seconds = std::clamp(votes.value("poll_seconds", c.votes.poll_seconds), 10U, 600U);
|
|
if (votes.contains("custom") && votes.at("custom").is_array())
|
|
for (const auto &item : votes.at("custom")) {
|
|
if (!item.is_object()) throw std::runtime_error("votes.custom must be a list of votes, each a JSON object.");
|
|
// A vote the owner writes in needs no more than its name and command.
|
|
CustomVote v;
|
|
v.name = item.value("name", std::string{});
|
|
v.description = item.value("description", std::string{});
|
|
v.command = item.value("command", std::string{});
|
|
if (item.contains("choices") && item.at("choices").is_array())
|
|
for (const auto &choice : item.at("choices"))
|
|
if (choice.is_string()) v.choices.push_back(choice.string());
|
|
v.setting.enabled = item.value("enabled", v.setting.enabled);
|
|
v.setting.percent = std::clamp(item.value("percent", v.setting.percent), 1U, 100U);
|
|
vote_limits(item, v.setting);
|
|
c.votes.custom.push_back(std::move(v));
|
|
}
|
|
|
|
// Announcements came after the sections.
|
|
const Json no_announcements = Json::object();
|
|
const auto &announcements = root.contains("announcements") && root.at("announcements").is_object()
|
|
? root.at("announcements") : no_announcements;
|
|
for (const char *key : {"messages", "interval_minutes"})
|
|
if (!announcements.contains(key)) missing.push_back(std::string("announcements.") + key);
|
|
if (announcements.contains("messages") && announcements.at("messages").is_array())
|
|
for (const auto &message : announcements.at("messages"))
|
|
if (message.is_string() && !message.string().empty()) c.announcements.messages.push_back(message.string());
|
|
c.announcements.interval = std::min(announcements.value("interval_minutes", c.announcements.interval), max_announcement_interval);
|
|
|
|
// Chat commands came after announcements: a command is a string or a list of them.
|
|
if (!root.contains("commands")) missing.push_back("commands");
|
|
else if (!root.at("commands").is_array()) throw std::runtime_error("commands must be a list of commands, each a JSON object.");
|
|
else
|
|
for (const auto &item : root.at("commands")) {
|
|
if (!item.is_object()) throw std::runtime_error("commands must be a list of commands, each a JSON object.");
|
|
CustomCommand command;
|
|
command.name = item.value("name", std::string{});
|
|
command.reply = item.value("reply", std::string{});
|
|
command.admin = item.value("admin", command.admin);
|
|
if (item.contains("command") && item.at("command").is_string()) command.commands.push_back(item.at("command").string());
|
|
else if (item.contains("command") && item.at("command").is_array())
|
|
for (const auto &run : item.at("command"))
|
|
if (run.is_string() && !run.string().empty()) command.commands.push_back(run.string());
|
|
c.commands.push_back(std::move(command));
|
|
}
|
|
|
|
const auto read_bans = [&](const Json &rows) {
|
|
if (!rows.is_array()) throw std::runtime_error("The bans must be a JSON list.");
|
|
for (const auto &row : rows) {
|
|
const auto id = steam_id(row.at("id"));
|
|
if (std::none_of(c.bans.begin(), c.bans.end(), [&](const auto &ban) { return ban.id == id; }))
|
|
c.bans.push_back({id, row.value("name", std::string{}), row.value("added", std::int64_t{})});
|
|
}
|
|
};
|
|
if (const auto bans = bans_file(c); std::filesystem::exists(bans)) {
|
|
std::stringstream held;
|
|
{
|
|
std::ifstream in(bans, std::ios::binary);
|
|
held << in.rdbuf();
|
|
}
|
|
try {
|
|
read_bans(Json::parse(held.str()));
|
|
} catch (const std::exception &e) {
|
|
// Never started without its bans because their file has a typo in it.
|
|
throw std::runtime_error("Cannot read " + path_utf8(bans) + ": " + e.what());
|
|
}
|
|
}
|
|
// A config from an older version holds the bans itself: they are moved to their own file.
|
|
const bool bans_moved = root.contains("bans");
|
|
if (bans_moved) read_bans(root.at("bans"));
|
|
// New settings, an older layout, or settings that are no longer any: the file is written
|
|
// as it is now, so owners see what there is.
|
|
const bool gone = root.contains("tps") || root.contains("reserved_slots") || root.contains("relay_everything") ||
|
|
(root.contains("network") && root.at("network").contains("relay_everything"));
|
|
if (!missing.empty() || moved || bans_moved || gone) {
|
|
save_config(c);
|
|
if (added) *added = std::move(missing);
|
|
}
|
|
return c;
|
|
}
|
|
std::filesystem::path bans_file(const ServerConfig &c) { return c.file.parent_path() / "data" / "bans.json"; }
|
|
void save_config(const ServerConfig &c) {
|
|
// The bans first: a config that held them is only rewritten without them once they are safe.
|
|
write_file(bans_file(c), bans_json(c).dump(2));
|
|
std::string text;
|
|
write(text, layout(c), 0);
|
|
write_file(c.file, text);
|
|
}
|
|
std::string scoring_text(std::uint64_t fingerprint) {
|
|
static constexpr char digits[] = "0123456789abcdef";
|
|
std::string text(16, '0');
|
|
for (int i = 15; i >= 0; --i, fingerprint >>= 4) text[static_cast<std::size_t>(i)] = digits[fingerprint & 15];
|
|
return text;
|
|
}
|
|
std::optional<std::uint64_t> parse_scoring(std::string_view text) {
|
|
if (text.empty() || text.size() > 16) return std::nullopt;
|
|
std::uint64_t value{};
|
|
for (const auto c : text) {
|
|
const auto digit = c >= '0' && c <= '9' ? c - '0' : c >= 'a' && c <= 'f' ? c - 'a' + 10 : c >= 'A' && c <= 'F' ? c - 'A' + 10 : -1;
|
|
if (digit < 0) return std::nullopt;
|
|
value = value << 4 | static_cast<std::uint64_t>(digit);
|
|
}
|
|
if (!value) return std::nullopt;
|
|
return value;
|
|
}
|
|
std::size_t extra_slots(const ServerConfig &config) noexcept {
|
|
// (An admin who is also listed has one slot, not two.)
|
|
std::size_t slots = config.reserved.size();
|
|
for (const auto id : config.admins)
|
|
if (std::find(config.reserved.begin(), config.reserved.end(), id) == config.reserved.end()) ++slots;
|
|
// Never more players than a session can hold, the server itself being one of them.
|
|
const std::size_t room = multiplayer::max_players - 1;
|
|
return config.max_players >= room ? 0 : std::min<std::size_t>(slots, room - config.max_players);
|
|
}
|
|
bool may_join(const ServerConfig &config, std::uint64_t id, std::size_t on) noexcept {
|
|
if (on < config.max_players) return true;
|
|
const auto listed = [&](const std::vector<std::uint64_t> &ids) { return std::find(ids.begin(), ids.end(), id) != ids.end(); };
|
|
return (listed(config.reserved) || listed(config.admins)) && on < config.max_players + extra_slots(config);
|
|
}
|
|
std::optional<std::uint32_t> parse_colour(std::string_view text) noexcept {
|
|
if (!text.empty() && text.front() == '#') text.remove_prefix(1);
|
|
if (text.size() != 6) return std::nullopt;
|
|
std::uint32_t rgb{};
|
|
for (const char c : text) {
|
|
const int digit = c >= '0' && c <= '9' ? c - '0' : c >= 'a' && c <= 'f' ? c - 'a' + 10 : c >= 'A' && c <= 'F' ? c - 'A' + 10 : -1;
|
|
if (digit < 0) return std::nullopt;
|
|
rgb = rgb << 4 | static_cast<std::uint32_t>(digit);
|
|
}
|
|
// Written red first; held with red lowest and opaque.
|
|
return 0xff000000U | (rgb & 0xff) << 16 | (rgb & 0xff00) | rgb >> 16;
|
|
}
|
|
bool custom_vote_name_free(std::string_view name) noexcept {
|
|
// What "/vote <word>" already means.
|
|
for (const std::string_view taken : {"map", "kick", "tod", "time", "yes", "y", "no", "n", "poll", "list"})
|
|
if (name == taken) return false;
|
|
// A number is an answer to a poll ("/vote 2").
|
|
return !std::all_of(name.begin(), name.end(), [](char c) { return c >= '0' && c <= '9'; });
|
|
}
|
|
std::string custom_votes_error(const std::vector<CustomVote> &votes) {
|
|
using namespace multiplayer;
|
|
if (votes.size() > server_custom_vote_limit)
|
|
return "votes.custom: at most " + std::to_string(server_custom_vote_limit) + " votes.";
|
|
for (std::size_t i = 0; i < votes.size(); ++i) {
|
|
const auto &v = votes[i];
|
|
const auto where = "votes.custom \"" + v.name + "\": ";
|
|
if (!valid_server_vote_name(v.name))
|
|
return "votes.custom: each vote needs a name of 1 to 16 lowercase letters, digits, - or _ (\"" + v.name + "\" is not).";
|
|
if (!custom_vote_name_free(v.name)) return where + "that name is one of the server's own votes.";
|
|
for (std::size_t j = 0; j < i; ++j)
|
|
if (votes[j].name == v.name) return where + "two votes have that name.";
|
|
if (!v.description.empty() && (v.description.size() > server_vote_description_bytes || !valid_chat_text(v.description)))
|
|
return where + "description must be one chat line of at most " + std::to_string(server_vote_description_bytes) + " bytes.";
|
|
if (v.command.empty() || !valid_admin_text(v.command)) return where + "command must be one server command, e.g. \"map {map}\".";
|
|
if (v.choices.size() > server_vote_max_choices)
|
|
return where + "at most " + std::to_string(server_vote_max_choices) + " choices.";
|
|
for (const auto &choice : v.choices)
|
|
if (!valid_server_vote_name(choice))
|
|
return where + "each choice is 1 to 16 lowercase letters, digits, - or _ (\"" + choice + "\" is not).";
|
|
const bool takes_argument = v.command.find("{arg}") != std::string::npos;
|
|
if (takes_argument && v.choices.empty()) return where + "a command with {arg} needs a list of choices.";
|
|
if (!takes_argument && !v.choices.empty()) return where + "choices need {arg} in the command, where the choice goes.";
|
|
}
|
|
return {};
|
|
}
|
|
bool custom_command_name_free(std::string_view name) noexcept {
|
|
// The chat's own commands, then the server commands admins type as /<command>.
|
|
for (const std::string_view taken :
|
|
{"help", "party", "p", "w", "whisper", "tell", "poll", "vote", "yes", "y", "no", "n", "tp",
|
|
"activity-log", "admin", "admins", "afk-kick", "announce", "announce-throwdowns", "announce-to", "announcements",
|
|
"ban", "bans", "board-check", "bone-scale", "boosts", "boosts-allow", "chat-color", "chat-colour", "clear-objects", "crowd",
|
|
"distances", "effects", "kick", "layer", "layer-sync", "layers", "listed", "map", "map-pool", "maps", "msg",
|
|
"msg-admins", "msg-party", "name", "net", "nobail", "nobail-allow", "noclip", "noclip-allow", "object-limit",
|
|
"object-placement", "object-scaling", "objects", "park", "parties", "party-size", "password", "placement",
|
|
"players", "rate", "reserved", "rotation", "say", "score-allow", "score-check", "speed-check", "status", "tod",
|
|
"tpall", "tphere", "tps", "tuning", "tuning-enforce", "unban", "voice", "voice-allow", "voice-range",
|
|
"vote-cancel", "votes", "welcome", "world-layer-sync", "quit", "exit", "stop", "update"})
|
|
if (name == taken) return false;
|
|
// A number is an answer to a poll ("/2").
|
|
return !std::all_of(name.begin(), name.end(), [](char c) { return c >= '0' && c <= '9'; });
|
|
}
|
|
std::string custom_commands_error(const std::vector<CustomCommand> &commands) {
|
|
using namespace multiplayer;
|
|
if (commands.size() > max_custom_commands) return "commands: at most " + std::to_string(max_custom_commands) + " commands.";
|
|
for (std::size_t i = 0; i < commands.size(); ++i) {
|
|
const auto &c = commands[i];
|
|
if (!valid_server_vote_name(c.name))
|
|
return "commands: each needs a name of 1 to 16 lowercase letters, digits, - or _ (\"" + c.name + "\" is not).";
|
|
const auto where = "commands \"" + c.name + "\": ";
|
|
if (!custom_command_name_free(c.name)) return where + "that name is one of the server's own commands.";
|
|
for (std::size_t j = 0; j < i; ++j)
|
|
if (commands[j].name == c.name) return where + "two commands have that name.";
|
|
if (c.reply.empty() && c.commands.empty()) return where + "needs a reply, a command, or both.";
|
|
if (!c.reply.empty() && !valid_chat_text(c.reply)) return where + "reply must be one chat line (at most 200 bytes).";
|
|
if (c.commands.size() > max_custom_command_runs)
|
|
return where + "at most " + std::to_string(max_custom_command_runs) + " server commands.";
|
|
for (const auto &run : c.commands)
|
|
if (!valid_admin_text(run)) return where + "each command must be one server command, e.g. \"announce-to {player} Hi\".";
|
|
}
|
|
return {};
|
|
}
|
|
std::string config_error(const ServerConfig &c) {
|
|
using namespace multiplayer;
|
|
if (!parse_colour(c.chat_color)) return "chat_color must be a colour like #8E5CFF.";
|
|
if (c.afk_kick > 1440) return "afk_kick_minutes must be 0 (never) to 1440.";
|
|
if (c.word_warnings > 10) return "word_warnings must be 0 (words are not checked) to 10.";
|
|
if (!parse_colour(c.chat_text_color)) return "chat_text_color must be a colour like #D9C8FF.";
|
|
if (!valid_server_name(c.name)) return std::string("name must be ") + server_name_rule + ".";
|
|
for (const auto id : c.reserved)
|
|
if (!individual_steam_id(id)) return "reserved_players_slots must be SteamID64s (17 digits starting 7656119).";
|
|
if (c.reserved.size() > 1024) return "reserved_players_slots holds at most 1024 players.";
|
|
if (c.send_rate < 128 || c.send_rate > 16384) return "send_rate must be 128 to 16384 (KB/s for each player).";
|
|
if (c.bone_scale_limit != 0 && !(c.bone_scale_limit >= 1.f && c.bone_scale_limit <= 8.f))
|
|
return "bone_scale_limit must be 0 (no limit) or 1 to 8 (1: no resized body parts at all).";
|
|
if (c.bone_reach_limit != 0 && !(c.bone_reach_limit >= .5f && c.bone_reach_limit <= 20.f))
|
|
return "bone_reach_limit must be 0 (no limit) or 0.5 to 20 metres.";
|
|
if (c.pack_ms > 50) return "pack_ms must be 0 (off) to 50.";
|
|
if (c.threads > 32) return "threads must be 0 (one for each processor but one) to 32.";
|
|
if (c.finger_distance > 10000) return "finger_distance must be 0 (fingers always sent) to 10000.";
|
|
if (!valid_crowd_budget(c.crowd_budget))
|
|
return "crowd_budget must be 0 (no limit) or " + std::to_string(min_crowd_budget) + " to " +
|
|
std::to_string(max_crowd_budget) + ".";
|
|
if (c.steam_token.size() > 64 || !std::all_of(c.steam_token.begin(), c.steam_token.end(), [](unsigned char ch) { return std::isalnum(ch); }))
|
|
return "steam_token must be a game server login token (letters and digits), or empty to sign in anonymously.";
|
|
if (c.map.empty() || !valid_map_destination(map_destination(c.map)) || !installed_map(c.map))
|
|
return "map \"" + c.map + "\" is not a map this server has. Use a name like \"San Vansterdam\", or put the map's mod "
|
|
"folder in Mods next to the server.";
|
|
for (const auto &map : c.map_pool)
|
|
if (!find_level(map) || !valid_map_destination(map_destination(map)))
|
|
return "map_pool: \"" + map + "\" is not a single known map. Use names like \"Isle of Grom\", or put the "
|
|
"map's mod folder in Mods next to the server.";
|
|
if (c.max_players < 1 || c.max_players + 1 > max_players)
|
|
return "max_players must be 1 to " + std::to_string(max_players - 1) + ".";
|
|
if (c.password.size() > 64) return "password must be at most 64 characters.";
|
|
if (!c.welcome.empty() && !valid_chat_text(c.welcome)) return "welcome must be one chat line (at most 200 bytes).";
|
|
if (auto error = custom_votes_error(c.votes.custom); !error.empty()) return error;
|
|
if (auto error = custom_commands_error(c.commands); !error.empty()) return error;
|
|
if (c.announcements.messages.size() > max_announcements)
|
|
return "announcements.messages: at most " + std::to_string(max_announcements) + " messages.";
|
|
for (const auto &message : c.announcements.messages)
|
|
if (!valid_chat_text(message)) return "announcements.messages: each must be one chat line (at most 200 bytes).";
|
|
if (c.tps != dedicated_tps) return "tps is " + std::to_string(dedicated_tps) + " on dedicated servers.";
|
|
if (!valid_voice_range(c.voice_range)) return "voice_range must be 50 to 1000.";
|
|
if (!valid_object_limit(c.object_limit)) return "object_limit must be 0 (no limit) to " + std::to_string(max_object_limit) + ".";
|
|
if (!c.distances.valid()) return "distances must be ordered: full_rate_return < half_rate_start <= half_rate_return < low_rate_start <= 10000.";
|
|
for (unsigned lot = 0; lot < park_lots.size(); ++lot)
|
|
if (c.parks[lot].empty() || !valid_park(lot, c.parks[lot]))
|
|
return "parks." + std::string(park_lots[lot].key) + " is not a park layout (e.g. skatepark_01, or empty).";
|
|
if (!c.port || !c.query_port || c.port == c.query_port) return "port and query_port must differ.";
|
|
for (const auto id : c.admins)
|
|
if (!individual_steam_id(id)) return "admins must be SteamID64s (17 digits starting 7656119).";
|
|
return {};
|
|
}
|
|
namespace {
|
|
constexpr std::string_view root_level = "Levels/Game/DingoLevel_Root/DingoLevel_Root";
|
|
std::string folded(std::string_view text) {
|
|
std::string result(text);
|
|
for (auto &c : result) {
|
|
if (c >= 'A' && c <= 'Z') c = static_cast<char>(c + 32);
|
|
if (c == '\\') c = '/';
|
|
}
|
|
return result;
|
|
}
|
|
bool same(std::string_view a, std::string_view b) { return folded(a) == folded(b); }
|
|
bool starts(std::string_view text, std::string_view prefix) { return folded(text).starts_with(folded(prefix)); }
|
|
std::vector<ServerLevel> &level_list() {
|
|
static std::vector<ServerLevel> value;
|
|
return value;
|
|
}
|
|
} // namespace
|
|
std::vector<std::string> load_levels(const std::filesystem::path &mods) {
|
|
auto &list = level_list();
|
|
list.clear();
|
|
// The retail maps players can skate together; the game names them the same way.
|
|
for (const char *asset : {"Levels/Game/BAM_LevelRoot/BAM_LevelRoot",
|
|
"Levels/Game/DingoLevel_Isle_of_Grom/DingoLevel_Isle_of_Grom",
|
|
"Levels/Game/DingoLevel_MPR/DingoLevel_MPR",
|
|
"Levels/Game/DingoLevel_FTUE_Island/DingoLevel_FTUE_Island",
|
|
"Levels/Game/DingoLevel_SDM/DingoLevel_SDM_Int_001/DingoLevel_SDM_Int_001",
|
|
"Levels/Game/DingoLevel_SDM/DingoLevel_SDM_Int_002/DingoLevel_SDM_Int_002"})
|
|
list.push_back({asset, world_level_name(asset)});
|
|
std::vector<std::string> problems;
|
|
std::error_code error;
|
|
if (!std::filesystem::is_directory(mods, error)) return problems;
|
|
for (const auto &entry : std::filesystem::directory_iterator(mods, error)) {
|
|
const auto manifest = entry.path() / "reskate-levels.json";
|
|
if (!entry.is_directory() || !std::filesystem::exists(manifest)) continue;
|
|
try {
|
|
std::ifstream in(manifest, std::ios::binary);
|
|
std::stringstream text;
|
|
text << in.rdbuf();
|
|
const auto root = Json::parse(text.str());
|
|
// The mod's version, when the whole folder was copied here and not only its level list.
|
|
std::string version;
|
|
try {
|
|
std::ifstream about(entry.path() / "manifest.json", std::ios::binary);
|
|
std::stringstream about_text;
|
|
about_text << about.rdbuf();
|
|
if (about) version = Json::parse(about_text.str()).value("version_number", "");
|
|
} catch (const std::exception &) {}
|
|
const auto package = multiplayer::map_package_name(entry.path().filename().string(), version);
|
|
for (const auto &level : root.at("levels")) {
|
|
const auto asset = level.at("asset").string();
|
|
const auto name = level.value("displayName", world_level_name(asset));
|
|
if (std::none_of(list.begin(), list.end(), [&](const auto &l) { return same(l.asset, asset); }))
|
|
list.push_back({asset, name.empty() ? world_level_name(asset) : name, package});
|
|
}
|
|
} catch (const std::exception &e) {
|
|
problems.push_back(entry.path().filename().string() + ": " + e.what());
|
|
}
|
|
}
|
|
return problems;
|
|
}
|
|
const std::vector<ServerLevel> &levels() { return level_list(); }
|
|
const ServerLevel *find_level(std::string_view map) {
|
|
if (map.empty()) return nullptr;
|
|
for (const auto &level : level_list())
|
|
if (same(level.asset, map)) return &level;
|
|
for (const bool exact : {true, false}) {
|
|
const ServerLevel *result{};
|
|
for (const auto &level : level_list()) {
|
|
const auto alias = world_level_short_name(level.asset);
|
|
if (exact ? (same(level.name, map) || same(alias, map))
|
|
: (starts(level.name, map) || starts(alias, map) || starts(level.asset, map))) {
|
|
if (result) return nullptr; // ambiguous
|
|
result = &level;
|
|
}
|
|
}
|
|
if (result) return result;
|
|
}
|
|
return nullptr;
|
|
}
|
|
std::uint32_t direct_ipv4(std::string_view text) noexcept {
|
|
std::uint32_t address{};
|
|
unsigned parts{};
|
|
while (!text.empty() && parts < 4) {
|
|
const auto dot = text.find('.');
|
|
const auto part = text.substr(0, dot);
|
|
unsigned value{};
|
|
const auto parsed = std::from_chars(part.data(), part.data() + part.size(), value);
|
|
if (part.empty() || part.size() > 3 || parsed.ec != std::errc{} || parsed.ptr != part.data() + part.size() || value > 255) return 0;
|
|
address = (address << 8) | value;
|
|
++parts;
|
|
text = dot == std::string_view::npos ? std::string_view{} : text.substr(dot + 1);
|
|
if (dot != std::string_view::npos && text.empty()) return 0; // a trailing dot
|
|
}
|
|
return parts == 4 && text.empty() ? address : 0;
|
|
}
|
|
bool installed_map(std::string_view map) {
|
|
const auto destination = map_destination(map);
|
|
const auto asset = world_destination_asset(destination);
|
|
return !asset.empty() && std::any_of(level_list().begin(), level_list().end(), [&](const auto &level) { return same(level.asset, asset); });
|
|
}
|
|
std::string map_destination(std::string_view map) {
|
|
if (map.find('|') != std::string_view::npos) return std::string(map);
|
|
if (const auto *level = find_level(map)) return std::string(root_level) + "|" + level->asset;
|
|
// A level path the server has no manifest for: players with that map can still load it.
|
|
if (map.find('/') != std::string_view::npos) return std::string(root_level) + "|" + std::string(map);
|
|
return {};
|
|
}
|
|
std::string map_setting(std::string_view map) {
|
|
std::string_view level = map;
|
|
if (const auto split = map.find('|'); split != std::string_view::npos) {
|
|
const auto root = map.substr(0, split), detached = map.substr(split + 1);
|
|
// Anything not loaded into the usual root level keeps its full destination.
|
|
if (!same(root, root_level) || detached.empty()) return std::string(map);
|
|
level = detached;
|
|
}
|
|
if (const auto *known = find_level(level)) return known->name;
|
|
return std::string(level);
|
|
}
|
|
std::string map_label(std::string_view map) {
|
|
if (const auto *level = find_level(map)) return level->name;
|
|
return world_level_name(world_destination_asset(map_destination(map)));
|
|
}
|
|
std::string map_package(std::string_view map) {
|
|
const auto *level = find_level(map);
|
|
return level ? level->package : std::string();
|
|
}
|
|
std::vector<const ServerLevel *> pool_levels(const ServerConfig &config) {
|
|
std::vector<const ServerLevel *> pool;
|
|
const auto add = [&](const ServerLevel *level) {
|
|
if (level && multiplayer::valid_map_destination(map_destination(level->asset)) &&
|
|
std::find(pool.begin(), pool.end(), level) == pool.end())
|
|
pool.push_back(level);
|
|
};
|
|
if (config.map_pool.empty())
|
|
for (const auto &level : level_list()) add(&level);
|
|
for (const auto &map : config.map_pool) add(find_level(map));
|
|
return pool;
|
|
}
|
|
bool in_map_pool(const ServerConfig &config, std::string_view map) {
|
|
if (config.map_pool.empty()) return true;
|
|
const auto pool = pool_levels(config);
|
|
const auto *level = find_level(map);
|
|
return level && std::find(pool.begin(), pool.end(), level) != pool.end();
|
|
}
|
|
const ServerLevel *next_pool_map(const ServerConfig &config, std::string_view map) {
|
|
const auto pool = pool_levels(config);
|
|
const auto *current = find_level(map);
|
|
const auto at = static_cast<std::size_t>(std::find(pool.begin(), pool.end(), current) - pool.begin());
|
|
for (std::size_t step = 1; step <= pool.size(); ++step) {
|
|
const auto *next = at == pool.size() ? pool[step - 1] : pool[(at + step) % pool.size()];
|
|
if (next != current) return next;
|
|
}
|
|
return nullptr;
|
|
}
|
|
} // namespace dingosdk::server
|