mirror of
https://github.com/Dingo-Shenanigans/ReSkate.git
synced 2026-10-17 22:07:05 +02:00
328 lines
16 KiB
C++
328 lines
16 KiB
C++
#include "server_config.h"
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#include "Engine/Core/Json/json.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 <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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Json to_json(const ServerConfig &c) {
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auto root = Json::object();
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root["name"] = c.name;
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root["map"] = c.map;
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root["max_players"] = c.max_players;
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root["password"] = c.password;
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root["welcome"] = c.welcome;
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root["listed"] = c.listed;
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root["auto_update"] = c.auto_update;
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root["activity_log"] = c.activity_log;
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root["announce_throwdowns"] = c.announce_throwdowns;
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root["parties"] = c.parties;
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root["party_size"] = c.party_size;
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root["speed_check"] = c.speed_check;
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root["score_check"] = 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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root["score_allow"] = std::move(allowed);
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root["port"] = static_cast<unsigned>(c.port);
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root["query_port"] = static_cast<unsigned>(c.query_port);
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root["tps"] = c.tps;
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root["voice_chat"] = c.voice_chat;
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root["voice_range"] = static_cast<double>(c.voice_range);
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auto distances = Json::object();
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distances["full_rate_return"] = c.distances.full_rate_return;
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distances["half_rate_start"] = c.distances.half_rate_start;
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distances["half_rate_return"] = c.distances.half_rate_return;
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distances["low_rate_start"] = c.distances.low_rate_start;
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root["distances"] = std::move(distances);
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root["object_placement"] = placement_text(c.object_placement);
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root["noclip"] = c.noclip;
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root["no_bail"] = c.no_bail;
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root["boosts"] = c.boosts;
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root["enforce_tuning"] = c.enforce_tuning;
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auto votes = Json::object();
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const auto vote = [](const VoteSetting &v) {
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auto item = Json::object();
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item["enabled"] = v.enabled;
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item["percent"] = v.percent;
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return item;
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};
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votes["map"] = vote(c.votes.map);
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votes["kick"] = vote(c.votes.kick);
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votes["time_of_day"] = vote(c.votes.time);
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votes["seconds"] = c.votes.seconds;
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votes["cooldown_seconds"] = c.votes.cooldown;
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root["votes"] = std::move(votes);
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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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root["parks"] = std::move(parks);
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root["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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root["layers"] = std::move(layers);
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// SteamID64s are written as strings: JSON readers often lose 64-bit precision.
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auto admins = Json::array();
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for (const auto id : c.admins) admins.push_back(std::to_string(id));
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root["admins"] = std::move(admins);
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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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root["bans"] = std::move(bans);
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return root;
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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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// The settings `expected` has that `file` lacks, nested objects included.
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void missing_settings(const Json &file, const Json &expected, const std::string &prefix, std::vector<std::string> &out) {
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for (const auto &[key, value] : expected.items()) {
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if (!file.contains(key)) out.push_back(prefix + key);
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else if (value.is_object() && file.at(key).is_object()) missing_settings(file.at(key), value, prefix + key + ".", out);
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}
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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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c.name = root.value("name", c.name);
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c.map = root.value("map", c.map);
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c.max_players = root.value("max_players", c.max_players);
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c.password = root.value("password", c.password);
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c.welcome = root.value("welcome", c.welcome);
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c.listed = root.value("listed", c.listed);
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c.auto_update = root.value("auto_update", c.auto_update);
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c.activity_log = root.value("activity_log", c.activity_log);
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c.announce_throwdowns = root.value("announce_throwdowns", c.announce_throwdowns);
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c.parties = root.value("parties", c.parties);
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c.party_size = std::clamp(root.value("party_size", c.party_size), 2U, 8U);
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c.speed_check = root.value("speed_check", c.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.score_check = root.value("score_check", c.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 (root.contains("score_allow") && root.at("score_allow").is_array())
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for (const auto &value : root.at("score_allow"))
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if (value.is_string())
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if (const auto fingerprint = parse_scoring(value.string()))
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c.score_allow.push_back(*fingerprint);
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c.port = static_cast<std::uint16_t>(root.value("port", static_cast<unsigned>(c.port)));
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c.query_port = static_cast<std::uint16_t>(root.value("query_port", static_cast<unsigned>(c.query_port)));
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c.tps = root.value("tps", c.tps);
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c.voice_chat = root.value("voice_chat", c.voice_chat);
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c.voice_range = root.value("voice_range", c.voice_range);
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if (root.contains("distances")) {
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const auto &d = root.at("distances");
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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.noclip = root.value("noclip", c.noclip);
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c.no_bail = root.value("no_bail", c.no_bail);
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c.boosts = root.value("boosts", c.boosts);
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c.enforce_tuning = root.value("enforce_tuning", c.enforce_tuning);
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if (root.contains("votes") && root.at("votes").is_object()) {
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const auto &votes = root.at("votes");
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const auto read_vote = [&](const char *key, VoteSetting &v) {
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if (!votes.contains(key) || !votes.at(key).is_object()) return;
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const auto &item = votes.at(key);
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v.enabled = item.value("enabled", v.enabled);
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v.percent = std::clamp(item.value("percent", v.percent), 1U, 100U);
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};
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read_vote("map", c.votes.map);
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read_vote("kick", c.votes.kick);
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read_vote("time_of_day", c.votes.time);
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c.votes.seconds = std::clamp(votes.value("seconds", c.votes.seconds), 10U, 300U);
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c.votes.cooldown = std::clamp(votes.value("cooldown_seconds", c.votes.cooldown), 0U, 3600U);
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}
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const auto placement = root.value("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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if (root.contains("parks"))
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for (unsigned lot = 0; lot < park_lots.size(); ++lot)
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c.parks[lot] = root.at("parks").value(park_lots[lot].key, c.parks[lot]);
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c.world_layer_sync = root.value("world_layer_sync", c.world_layer_sync);
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if (root.contains("layers") && root.at("layers").is_object())
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for (const auto &[key, mode] : root.at("layers").items())
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if (mode.is_string()) c.layers[key] = mode.string();
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if (root.contains("admins"))
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for (const auto &id : root.at("admins")) c.admins.push_back(steam_id(id));
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if (root.contains("bans"))
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for (const auto &row : root.at("bans"))
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c.bans.push_back({steam_id(row.at("id")), row.value("name", std::string{}),
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row.value("added", std::int64_t{})});
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// A config from an older version: write the new settings into it so owners can see them.
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std::vector<std::string> missing;
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missing_settings(root, to_json(c), {}, missing);
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if (!missing.empty()) {
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save_config(c);
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if (added) *added = std::move(missing);
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}
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return c;
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}
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void save_config(const ServerConfig &c) {
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if (c.file.has_parent_path()) std::filesystem::create_directories(c.file.parent_path());
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const auto temporary = std::filesystem::path(c.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 << to_json(c).dump(2) << '\n';
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if (!out) throw std::runtime_error("Cannot write " + temporary.string());
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}
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std::filesystem::rename(temporary, c.file);
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}
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std::string scoring_text(std::uint64_t fingerprint) {
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static constexpr char digits[] = "0123456789abcdef";
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std::string text(16, '0');
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for (int i = 15; i >= 0; --i, fingerprint >>= 4) text[static_cast<std::size_t>(i)] = digits[fingerprint & 15];
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return text;
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}
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std::optional<std::uint64_t> parse_scoring(std::string_view text) {
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if (text.empty() || text.size() > 16) return std::nullopt;
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std::uint64_t value{};
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for (const auto c : text) {
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const auto digit = c >= '0' && c <= '9' ? c - '0' : c >= 'a' && c <= 'f' ? c - 'a' + 10 : c >= 'A' && c <= 'F' ? c - 'A' + 10 : -1;
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if (digit < 0) return std::nullopt;
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value = value << 4 | static_cast<std::uint64_t>(digit);
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}
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if (!value) return std::nullopt;
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return value;
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}
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std::string config_error(const ServerConfig &c) {
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using namespace multiplayer;
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if (c.name.empty() || c.name.size() > 64 || !valid_member_name(c.name)) return "name must be 1 to 64 characters.";
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if (c.map.empty() || !valid_map_destination(map_destination(c.map)))
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return "map \"" + c.map + "\" is not a known map. Use a name like \"San Vansterdam\", or put the map's mod "
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"folder in Mods next to the server.";
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if (c.max_players < 1 || c.max_players + 1 > max_players)
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return "max_players must be 1 to " + std::to_string(max_players - 1) + ".";
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if (c.password.size() > 64) return "password must be at most 64 characters.";
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if (!c.welcome.empty() && !valid_chat_text(c.welcome)) return "welcome must be one chat line (at most 200 bytes).";
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if (!valid_multiplayer_tps(c.tps)) return "tps must be 20, 30, 60 or 120.";
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if (!valid_voice_range(c.voice_range)) return "voice_range must be 50 to 1000.";
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if (!c.distances.valid()) return "distances must be ordered: full_rate_return < half_rate_start <= half_rate_return < low_rate_start <= 10000.";
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for (unsigned lot = 0; lot < park_lots.size(); ++lot)
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if (c.parks[lot].empty() || !valid_park(lot, c.parks[lot]))
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return "parks." + std::string(park_lots[lot].key) + " is not a park layout (e.g. skatepark_01, or empty).";
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if (!c.port || !c.query_port || c.port == c.query_port) return "port and query_port must differ.";
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for (const auto id : c.admins)
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if (!individual_steam_id(id)) return "admins must be SteamID64s (17 digits starting 7656119).";
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return {};
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}
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namespace {
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constexpr std::string_view root_level = "Levels/Game/DingoLevel_Root/DingoLevel_Root";
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std::string folded(std::string_view text) {
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std::string result(text);
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for (auto &c : result) {
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if (c >= 'A' && c <= 'Z') c = static_cast<char>(c + 32);
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if (c == '\\') c = '/';
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}
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return result;
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}
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bool same(std::string_view a, std::string_view b) { return folded(a) == folded(b); }
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bool starts(std::string_view text, std::string_view prefix) { return folded(text).starts_with(folded(prefix)); }
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std::vector<ServerLevel> &level_list() {
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static std::vector<ServerLevel> value;
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return value;
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}
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} // namespace
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std::vector<std::string> load_levels(const std::filesystem::path &mods) {
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auto &list = level_list();
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list.clear();
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// The retail maps players can skate together; the game names them the same way.
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for (const char *asset : {"Levels/Game/BAM_LevelRoot/BAM_LevelRoot",
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"Levels/Game/DingoLevel_Isle_of_Grom/DingoLevel_Isle_of_Grom",
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"Levels/Game/DingoLevel_MPR/DingoLevel_MPR",
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"Levels/Game/DingoLevel_FTUE_Island/DingoLevel_FTUE_Island",
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"Levels/Game/DingoLevel_SDM/DingoLevel_SDM_Int_001/DingoLevel_SDM_Int_001",
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"Levels/Game/DingoLevel_SDM/DingoLevel_SDM_Int_002/DingoLevel_SDM_Int_002"})
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list.push_back({asset, world_level_name(asset)});
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std::vector<std::string> problems;
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std::error_code error;
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if (!std::filesystem::is_directory(mods, error)) return problems;
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for (const auto &entry : std::filesystem::directory_iterator(mods, error)) {
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const auto manifest = entry.path() / "reskate-levels.json";
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if (!entry.is_directory() || !std::filesystem::exists(manifest)) continue;
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try {
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std::ifstream in(manifest, std::ios::binary);
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std::stringstream text;
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text << in.rdbuf();
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const auto root = Json::parse(text.str());
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for (const auto &level : root.at("levels")) {
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const auto asset = level.at("asset").string();
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const auto name = level.value("displayName", world_level_name(asset));
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if (std::none_of(list.begin(), list.end(), [&](const auto &l) { return same(l.asset, asset); }))
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list.push_back({asset, name.empty() ? world_level_name(asset) : name});
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}
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} catch (const std::exception &e) {
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problems.push_back(entry.path().filename().string() + ": " + e.what());
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}
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}
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return problems;
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}
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const std::vector<ServerLevel> &levels() { return level_list(); }
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const ServerLevel *find_level(std::string_view map) {
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if (map.empty()) return nullptr;
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for (const auto &level : level_list())
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if (same(level.asset, map)) return &level;
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for (const bool exact : {true, false}) {
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const ServerLevel *result{};
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for (const auto &level : level_list()) {
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const auto alias = world_level_short_name(level.asset);
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if (exact ? (same(level.name, map) || same(alias, map))
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: (starts(level.name, map) || starts(alias, map) || starts(level.asset, map))) {
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if (result) return nullptr; // ambiguous
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result = &level;
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}
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}
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if (result) return result;
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}
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return nullptr;
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}
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std::string map_destination(std::string_view map) {
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if (map.find('|') != std::string_view::npos) return std::string(map);
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if (const auto *level = find_level(map)) return std::string(root_level) + "|" + level->asset;
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// A level path the server has no manifest for: players with that map can still load it.
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if (map.find('/') != std::string_view::npos) return std::string(root_level) + "|" + std::string(map);
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return {};
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}
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std::string map_setting(std::string_view map) {
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std::string_view level = map;
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if (const auto split = map.find('|'); split != std::string_view::npos) {
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const auto root = map.substr(0, split), detached = map.substr(split + 1);
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// Anything not loaded into the usual root level keeps its full destination.
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if (!same(root, root_level) || detached.empty()) return std::string(map);
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level = detached;
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}
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if (const auto *known = find_level(level)) return known->name;
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return std::string(level);
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}
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std::string map_label(std::string_view map) {
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if (const auto *level = find_level(map)) return level->name;
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return world_level_name(world_destination_asset(map_destination(map)));
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}
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} // namespace dingosdk::server
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