init

src/client.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "utils/cryptography.hpp"
+#include "game_server.hpp"
+
+struct client
+{
+	enum class state
+	{
+		can_authenticate = 0,
+		key_received,
+		challenge_sent,
+	};
+	
+	uint64_t guid{0};
+	bool registered{false};
+	game_type game{game_type::unknown};
+	state state{state::can_authenticate};
+	utils::cryptography::ecc::key key{};
+	std::string challenge{};
+	std::string aes_key{};
+	std::chrono::high_resolution_clock::time_point heartbeat{};
+};

src/client_list.cpp

@@ -0,0 +1,38 @@
+#include "std_include.hpp"
+#include "client_list.hpp"
+
+bool client_list::find_client(const uint64_t guid, const access_func& accessor)
+{
+	auto found = false;
+
+	this->iterate([&](iteration_context& context)
+	{
+		auto& client = context.get();
+		if (client.guid == guid)
+		{
+			accessor(client, context.get_address());
+			context.stop_iterating();
+			found = true;
+		}
+	});
+
+	return found;
+}
+
+bool client_list::find_client(const uint64_t guid, const const_access_func& accessor) const
+{
+	auto found = false;
+
+	this->iterate([&](const iteration_context& context)
+	{
+		const auto& client = context.get();
+		if (client.guid == guid)
+		{
+			accessor(client, context.get_address());
+			context.stop_iterating();
+			found = true;
+		}
+	});
+
+	return found;
+}

src/client_list.hpp

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "client.hpp"
+#include "network_list.hpp"
+
+class client_list : public network_list<client, 0>
+{
+public:
+	bool find_client(uint64_t guid, const access_func& accessor);
+	bool find_client(uint64_t guid, const const_access_func& accessor) const;
+
+	using network_list::insert;
+};

src/console.cpp

@@ -0,0 +1,248 @@
+#include "std_include.hpp"
+#include "console.hpp"
+
+#ifdef _WIN32
+#define COLOR_LOG_INFO 11//15
+#define COLOR_LOG_WARN 14
+#define COLOR_LOG_ERROR 12
+#define COLOR_LOG_DEBUG 15//7
+#else
+#define COLOR_LOG_INFO "\033[0;36m"
+#define COLOR_LOG_WARN "\033[0;33m"
+#define COLOR_LOG_ERROR "\033[0;31m"
+#define COLOR_LOG_DEBUG "\033[0m"
+#endif
+
+namespace console
+{
+	namespace
+	{
+		std::mutex signal_mutex;
+		std::function<void()> signal_callback;
+
+#ifdef _WIN32
+#define COLOR(win, posix) win
+		using color_type = WORD;
+#else
+#define COLOR(win, posix) posix
+		using color_type = const char*;
+#endif
+
+		const color_type color_array[] =
+		{
+			COLOR(0x8, "\033[0;90m"), // 0 - black
+			COLOR(0xC, "\033[0;91m"), // 1 - red
+			COLOR(0xA, "\033[0;92m"), // 2 - green
+			COLOR(0xE, "\033[0;93m"), // 3 - yellow
+			COLOR(0x9, "\033[0;94m"), // 4 - blue
+			COLOR(0xB, "\033[0;96m"), // 5 - cyan
+			COLOR(0xD, "\033[0;95m"), // 6 - pink
+			COLOR(0xF, "\033[0;97m"), // 7 - white
+		};
+
+#ifdef _WIN32
+		BOOL WINAPI handler(const DWORD signal)
+		{
+			if (signal == CTRL_C_EVENT && signal_callback)
+			{
+				signal_callback();
+			}
+
+			return TRUE;
+		}
+
+#else
+	void handler(int signal)
+	{
+		if (signal == SIGINT && signal_callback)
+		{
+			signal_callback();
+		}
+	}
+#endif
+
+		std::string format(va_list* ap, const char* message)
+		{
+			static thread_local char buffer[0x1000];
+
+#ifdef _WIN32
+			const int count = _vsnprintf_s(buffer, sizeof(buffer), sizeof(buffer), message, *ap);
+#else
+			const int count = vsnprintf(buffer, sizeof(buffer), message, *ap);
+#endif
+
+			if (count < 0) return {};
+			return {buffer, static_cast<size_t>(count)};
+		}
+
+#ifdef _WIN32
+		HANDLE get_console_handle()
+		{
+			return GetStdHandle(STD_OUTPUT_HANDLE);
+		}
+#endif
+
+		void set_color(const color_type color)
+		{
+#ifdef _WIN32
+			SetConsoleTextAttribute(get_console_handle(), color);
+#else
+			printf("%s", color);
+#endif
+		}
+
+		bool apply_color(const std::string& data, const size_t index, const color_type base_color)
+		{
+			if (data[index] != '^' || (index + 1) >= data.size())
+			{
+				return false;
+			}
+
+			auto code = data[index + 1] - '0';
+			if (code < 0 || code > 11)
+			{
+				return false;
+			}
+
+			code = std::min(code, 7); // Everything above white is white
+			if (code == 7)
+			{
+				set_color(base_color);
+			}
+			else
+			{
+				set_color(color_array[code]);
+			}
+
+			return true;
+		}
+
+		void print_colored(const std::string& line, const color_type base_color)
+		{
+			lock _{};
+			set_color(base_color);
+
+			for (size_t i = 0; i < line.size(); ++i)
+			{
+				if (apply_color(line, i, base_color))
+				{
+					++i;
+					continue;
+				}
+
+				putchar(line[i]);
+			}
+
+			reset_color();
+		}
+	}
+
+	lock::lock()
+	{
+#ifdef _WIN32
+		_lock_file(stdout);
+#else
+		flockfile(stdout);
+#endif
+	}
+
+	lock::~lock()
+	{
+#ifdef _WIN32
+		_unlock_file(stdout);
+#else
+		funlockfile(stdout);
+#endif
+	}
+
+	void reset_color()
+	{
+		lock _{};
+#ifdef _WIN32
+		SetConsoleTextAttribute(get_console_handle(), 7);
+#else
+		printf("\033[0m");
+#endif
+
+		fflush(stdout);
+	}
+
+	void info(const char* message, ...)
+	{
+		va_list ap;
+		va_start(ap, message);
+
+		const auto data = format(&ap, message);
+		print_colored("[+] " + data + "\n", COLOR_LOG_INFO);
+
+		va_end(ap);
+	}
+
+	void warn(const char* message, ...)
+	{
+		va_list ap;
+		va_start(ap, message);
+
+		const auto data = format(&ap, message);
+		print_colored("[!] " + data + "\n", COLOR_LOG_WARN);
+
+		va_end(ap);
+	}
+
+	void error(const char* message, ...)
+	{
+		va_list ap;
+		va_start(ap, message);
+
+		const auto data = format(&ap, message);
+		print_colored("[-] " + data + "\n", COLOR_LOG_ERROR);
+
+		va_end(ap);
+	}
+
+	void log(const char* message, ...)
+	{
+		va_list ap;
+		va_start(ap, message);
+
+		const auto data = format(&ap, message);
+		print_colored("[*] " + data + "\n", COLOR_LOG_DEBUG);
+
+		va_end(ap);
+	}
+
+	void set_title(const std::string& title)
+	{
+		lock _{};
+
+#ifdef _WIN32
+		SetConsoleTitleA(title.data());
+#else
+        printf("\033]0;%s\007", title.data());
+        fflush(stdout);
+#endif
+	}
+
+	signal_handler::signal_handler(std::function<void()> callback)
+		: std::lock_guard<std::mutex>(signal_mutex)
+	{
+		signal_callback = std::move(callback);
+
+#ifdef _WIN32
+		SetConsoleCtrlHandler(handler, TRUE);
+#else
+		signal(SIGINT, handler);
+#endif
+	}
+
+	signal_handler::~signal_handler()
+	{
+#ifdef _WIN32
+		SetConsoleCtrlHandler(handler, FALSE);
+#else
+		signal(SIGINT, SIG_DFL);
+#endif
+
+		signal_callback = {};
+	}
+}

src/console.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+namespace console
+{
+	class lock
+	{
+	public:
+		lock();
+		~lock();
+
+		lock(lock&&) = delete;
+		lock(const lock&) = delete;
+		lock& operator=(lock&&) = delete;
+		lock& operator=(const lock&) = delete;
+	};
+
+	void reset_color();
+
+	void info(const char* message, ...);
+	void warn(const char* message, ...);
+	void error(const char* message, ...);
+	void log(const char* message, ...);
+
+	void set_title(const std::string& title);
+
+	class signal_handler : std::lock_guard<std::mutex>
+	{
+	public:
+		signal_handler(std::function<void()> callback);
+		~signal_handler();
+	};
+}

src/crypto_key.cpp

@@ -0,0 +1,74 @@
+#include "std_include.hpp"
+#include "crypto_key.hpp"
+#include "console.hpp"
+
+#include "utils/io.hpp"
+
+namespace crypto_key
+{
+	namespace
+	{
+		bool load_key(utils::cryptography::ecc::key& key)
+		{
+			std::string data{};
+			if (!utils::io::read_file("./private.key", &data))
+			{
+				return false;
+			}
+
+			key.deserialize(data);
+			if (!key.is_valid())
+			{
+				console::warn("Loaded key is invalid!");
+				return false;
+			}
+
+			return true;
+		}
+
+		utils::cryptography::ecc::key generate_key()
+		{
+			auto key = utils::cryptography::ecc::generate_key(512);
+			if (!key.is_valid())
+			{
+				throw std::runtime_error("Failed to generate server key!");
+			}
+
+			if (!utils::io::write_file("./private.key", key.serialize()))
+			{
+				throw std::runtime_error("Failed to write server key!");
+			}
+
+			console::info("Generated cryptographic key: %llX", key.get_hash());
+			return key;
+		}
+
+		utils::cryptography::ecc::key load_or_generate_key()
+		{
+			utils::cryptography::ecc::key key{};
+			if (load_key(key))
+			{
+				console::log("Loaded cryptographic key: %llX", key.get_hash());
+				return key;
+			}
+
+			return generate_key();
+		}
+
+		utils::cryptography::ecc::key get_key_internal()
+		{
+			auto key = load_or_generate_key();
+			if (!utils::io::write_file("./public.key", key.get_public_key()))
+			{
+				console::error("Failed to write public key!");
+			}
+			return key;
+		}
+	}
+
+	const utils::cryptography::ecc::key& get()
+	{
+		static auto key = get_key_internal();
+		return key;
+	}
+}

src/crypto_key.hpp

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <utils/cryptography.hpp>
+
+namespace crypto_key
+{
+	const utils::cryptography::ecc::key& get();
+}

src/game_server.hpp

@@ -0,0 +1,73 @@
+#pragma once
+
+#include "utils/info_string.hpp"
+
+enum class game_type
+{
+	unknown = 0,
+	iw4,
+	iw6,
+	s1,
+	t7,
+};
+
+inline const std::string& resolve_game_type_name(const game_type game)
+{
+	static const std::unordered_map<game_type, std::string> names =
+	{
+		{game_type::unknown, "Unknown"},
+		{game_type::iw4, "IW4"},
+		{game_type::iw6, "IW6"},
+		{game_type::s1, "S1"},
+		{game_type::t7, "T7"},
+	};
+
+	return names.at(game);
+}
+
+inline game_type resolve_game_type(const std::string& game_name)
+{
+	if (game_name == "IW4")
+	{
+		return game_type::iw4;
+	}
+
+	if (game_name == "IW6")
+	{
+		return game_type::iw6;
+	}
+
+	if (game_name == "S1")
+	{
+		return game_type::s1;
+	}
+
+	if (game_name == "T7")
+	{
+		return game_type::t7;
+	}
+
+	return game_type::unknown;
+}
+
+struct game_server
+{
+	enum class state
+	{
+		can_ping = 0,
+		needs_ping,
+		pinged,
+		dead,
+	};
+
+	state state{state::can_ping};
+	bool registered{false};
+
+	game_type game{game_type::unknown};
+	int protocol{};
+	uint32_t clients{};
+	std::string name{};
+	std::string challenge{};
+	utils::info_string info_string{};
+	std::chrono::high_resolution_clock::time_point heartbeat{};
+};

src/main.cpp

@@ -0,0 +1,47 @@
+#include <std_include.hpp>
+
+#include "console.hpp"
+#include "server.hpp"
+#include "crypto_key.hpp"
+
+namespace
+{
+	void unsafe_main(const uint16_t port)
+	{
+		crypto_key::get();
+
+		console::log("Creating socket on port %hu", port);
+
+		network::address a{"0.0.0.0"};
+		a.set_port(port);
+		server s{a};
+
+		console::signal_handler handler([&s]()
+		{
+			s.stop();
+		});
+
+		s.run();
+
+		console::log("Terminating server...");
+	}
+}
+
+
+int main(const int argc, const char** argv)
+{
+	console::set_title("X Labs Master");
+	console::log("Starting X Labs Master");
+
+	try
+	{
+		unsafe_main(argc > 1 ? static_cast<uint16_t>(atoi(argv[1])) : 20810);
+	}
+	catch (std::exception& e)
+	{
+		console::error("Fatal error: %s\n", e.what());
+		return -1;
+	}
+
+	return 0;
+}

src/network/address.cpp

@@ -0,0 +1,160 @@
+#include "std_include.hpp"
+
+#include "network/address.hpp"
+
+namespace network
+{
+	address::address()
+	{
+		ZeroMemory(&this->address_, sizeof(this->address_));
+	}
+
+	address::address(const std::string& addr)
+		: address()
+	{
+		this->parse(addr);
+	}
+
+	address::address(sockaddr_in& addr)
+	{
+		this->address_ = addr;
+	}
+
+	bool address::operator==(const address& obj) const
+	{
+		//return !std::memcmp(&this->address_, &obj.address_, sizeof(this->address_));
+		return this->address_.sin_family == obj.address_.sin_family //
+			&& this->address_.sin_addr.s_addr == obj.address_.sin_addr.s_addr //
+			&& this->address_.sin_port == obj.address_.sin_port;
+	}
+
+	void address::set_ipv4(const in_addr addr)
+	{
+		this->address_.sin_family = AF_INET;
+		this->address_.sin_addr = addr;
+	}
+
+	void address::set_port(const unsigned short port)
+	{
+		this->address_.sin_port = htons(port);
+	}
+
+	unsigned short address::get_port() const
+	{
+		return ntohs(this->address_.sin_port);
+	}
+
+	std::string address::to_string(bool with_port) const
+	{
+		char buffer[1000] = {0};
+		inet_ntop(this->address_.sin_family, &this->address_.sin_addr, buffer, sizeof(buffer));
+
+		auto address = std::string(buffer);
+		if (with_port)
+		{
+			address += ":"s + std::to_string(this->get_port());
+		}
+
+		return address;
+	}
+
+	bool address::is_local() const
+	{
+		// According to: https://en.wikipedia.org/wiki/Private_network
+
+		uint8_t bytes[4];
+		*reinterpret_cast<uint32_t*>(&bytes) = this->address_.sin_addr.s_addr;
+
+		// 10.X.X.X
+		if (bytes[0] == 10)
+		{
+			return true;
+		}
+
+		// 192.168.X.X
+		if (bytes[0] == 192
+			&& bytes[1] == 168)
+		{
+			return true;
+		}
+
+		// 172.16.X.X - 172.31.X.X
+		if (bytes[0] == 172
+			&& bytes[1] >= 16
+			&& bytes[1] < 32)
+		{
+			return true;
+		}
+
+		// 127.0.0.1
+		if (this->address_.sin_addr.s_addr == 0x0100007F)
+		{
+			return true;
+		}
+
+		return false;
+	}
+
+	sockaddr& address::get_addr()
+	{
+		return reinterpret_cast<sockaddr&>(this->get_in_addr());
+	}
+
+	const sockaddr& address::get_addr() const
+	{
+		return reinterpret_cast<const sockaddr&>(this->get_in_addr());
+	}
+
+	sockaddr_in& address::get_in_addr()
+	{
+		return this->address_;
+	}
+
+	const sockaddr_in& address::get_in_addr() const
+	{
+		return this->address_;
+	}
+
+	void address::parse(std::string addr)
+	{
+		const auto pos = addr.find_last_of(':');
+		if (pos != std::string::npos)
+		{
+			auto port = addr.substr(pos + 1);
+			this->set_port(uint16_t(atoi(port.data())));
+
+			addr = addr.substr(0, pos);
+		}
+
+		this->resolve(addr);
+	}
+
+	void address::resolve(const std::string& hostname)
+	{
+		addrinfo* result = nullptr;
+		if (!getaddrinfo(hostname.data(), nullptr, nullptr, &result))
+		{
+			for (auto* i = result; i; i = i->ai_next)
+			{
+				if (i->ai_addr->sa_family == AF_INET)
+				{
+					const auto port = this->get_port();
+					std::memcpy(&this->address_, i->ai_addr, sizeof(this->address_));
+					this->set_port(port);
+
+					break;
+				}
+			}
+
+			freeaddrinfo(result);
+		}
+	}
+}
+
+std::size_t std::hash<network::address>::operator()(const network::address& a) const noexcept
+{
+	const auto h1 = std::hash<decltype(a.get_in_addr().sin_family)>{}(a.get_in_addr().sin_family);
+	const auto h2 = std::hash<decltype(a.get_in_addr().sin_addr.s_addr)>{}(a.get_in_addr().sin_addr.s_addr);
+	const auto h3 = std::hash<decltype(a.get_in_addr().sin_port)>{}(a.get_in_addr().sin_port);
+	return h1 ^ (h2 << 1) ^ (h3 << 2);
+}

src/network/address.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+namespace network
+{
+	class address
+	{
+	public:
+		address();
+		address(const std::string& addr);
+		address(sockaddr_in& addr);
+
+		void set_ipv4(in_addr addr);
+		void set_port(unsigned short port);
+		[[nodiscard]] unsigned short get_port() const;
+
+		sockaddr& get_addr();
+		const sockaddr& get_addr() const;
+		sockaddr_in& get_in_addr();
+		const sockaddr_in& get_in_addr() const;
+
+		[[nodiscard]] bool is_local() const;
+		[[nodiscard]] std::string to_string(bool with_port = true) const;
+
+		bool operator==(const address& obj) const;
+
+		bool operator!=(const address& obj) const
+		{
+			return !(*this == obj);
+		}
+
+	private:
+		sockaddr_in address_{};
+
+		void parse(std::string addr);
+		void resolve(const std::string& hostname);
+	};
+}
+
+namespace std
+{
+	template <>
+	struct hash<network::address>
+	{
+		std::size_t operator()(const network::address& a) const noexcept;
+	};
+}

src/network/socket.cpp

@@ -0,0 +1,129 @@
+#include "std_include.hpp"
+
+#include "network/socket.hpp"
+
+namespace network
+{
+	namespace
+	{
+#ifdef _WIN32
+		[[maybe_unused]] class wsa_initializer
+		{
+		public:
+			wsa_initializer()
+			{
+				WSADATA wsa_data;
+				if (WSAStartup(MAKEWORD(2, 2), &wsa_data))
+				{
+					throw std::runtime_error("Unable to initialize WSA");
+				}
+			}
+
+			~wsa_initializer()
+			{
+				WSACleanup();
+			}
+		} _;
+#endif
+	}
+
+	socket::socket()
+	{
+		this->socket_ = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	}
+
+	socket::~socket()
+	{
+		if (this->socket_ != INVALID_SOCKET)
+		{
+#ifdef _WIN32
+			closesocket(this->socket_);
+#else
+			close(this->socket_);
+#endif
+		}
+	}
+
+	socket::socket(socket&& obj) noexcept
+	{
+		this->operator=(std::move(obj));
+	}
+
+	socket& socket::operator=(socket&& obj) noexcept
+	{
+		if (this != &obj)
+		{
+			this->~socket();
+			this->socket_ = obj.socket_;
+			obj.socket_ = INVALID_SOCKET;
+		}
+
+		return *this;
+	}
+
+	bool socket::bind(const address& target)
+	{
+		return ::bind(this->socket_, &target.get_addr(), sizeof(target.get_addr())) == 0;
+	}
+
+	void socket::send(const address& target, const std::string& data) const
+	{
+		sendto(this->socket_, data.data(), static_cast<int>(data.size()), 0, &target.get_addr(),
+		       sizeof(target.get_addr()));
+	}
+
+	bool socket::receive(address& source, std::string& data) const
+	{
+		char buffer[0x2000];
+		socklen_t len = sizeof(source.get_in_addr());
+
+		const auto result = recvfrom(this->socket_, buffer, sizeof(buffer), 0, &source.get_addr(), &len);
+		if (result == SOCKET_ERROR) // Probably WSAEWOULDBLOCK
+		{
+			return false;
+		}
+
+		data.assign(buffer, buffer + result);
+		return true;
+	}
+
+	bool socket::set_blocking(const bool blocking)
+	{
+#ifdef _WIN32
+		unsigned long mode = blocking ? 0 : 1;
+		return ioctlsocket(this->socket_, FIONBIO, &mode) == 0;
+#else
+		int flags = fcntl(this->socket_, F_GETFL, 0);
+		if (flags == -1) return false;
+		flags = blocking ? (flags & ~O_NONBLOCK) : (flags | O_NONBLOCK);
+		return fcntl(this->socket_, F_SETFL, flags) == 0;
+#endif
+	}
+
+	bool socket::sleep(const std::chrono::milliseconds timeout) const
+	{
+		fd_set fdr;
+		FD_ZERO(&fdr);
+		FD_SET(this->socket_, &fdr);
+
+		const auto msec = timeout.count();
+
+		timeval tv{};
+		tv.tv_sec = static_cast<long>(msec / 1000ll);
+		tv.tv_usec = static_cast<long>((msec % 1000) * 1000);
+
+		const auto retval = select(static_cast<int>(this->socket_) + 1, &fdr, nullptr, nullptr, &tv);
+		if (retval == SOCKET_ERROR)
+		{
+			std::this_thread::sleep_for(1ms);
+			return socket_is_ready;
+		}
+
+		if (retval > 0)
+		{
+			return socket_is_ready;
+		}
+
+		return !socket_is_ready;
+	}
+}

src/network/socket.hpp

@@ -0,0 +1,40 @@
+#pragma once
+
+#include "network/address.hpp"
+
+namespace network
+{
+	class socket
+	{
+	public:
+		socket();
+		~socket();
+
+		socket(const socket& obj) = delete;
+		socket& operator=(const socket& obj) = delete;
+
+		socket(socket&& obj) noexcept;
+		socket& operator=(socket&& obj) noexcept;
+
+		bool bind(const address& target);
+
+		void send(const address& target, const std::string& data) const;
+		bool receive(address& source, std::string& data) const;
+
+		bool set_blocking(bool blocking);
+
+		static const bool socket_is_ready = true;
+		bool sleep(std::chrono::milliseconds timeout) const;
+
+	private:
+#ifdef _WIN32
+		using socklen_t = int;
+#else
+		using SOCKET = int;
+#define INVALID_SOCKET  (SOCKET)(~0)
+#define SOCKET_ERROR            (-1)
+#endif
+
+		SOCKET socket_ = INVALID_SOCKET;
+	};
+}

src/network_list.hpp

@@ -0,0 +1,172 @@
+#pragma once
+
+#include <functional>
+
+#include "console.hpp"
+#include "network/address.hpp"
+#include "utils/concurrency.hpp"
+
+template <typename T, size_t IPLimit = 0>
+class network_list
+{
+public:
+	class iteration_context
+	{
+	public:
+		friend network_list;
+
+		const network::address& get_address() const { return *this->address_; }
+		T& get() { return *this->element_; }
+		const T& get() const { return *this->element_; }
+		void remove() { this->remove_ = true; }
+		void stop_iterating() const { this->stop_iterating_ = true; }
+
+	private:
+		T* element_{};
+		const network::address* address_{};
+		bool remove_{false};
+		mutable bool stop_iterating_{false};
+	};
+
+	using iterate_func = std::function<void (iteration_context&)>;
+	using const_iterate_func = std::function<void (const iteration_context&)>;
+
+	using access_func = std::function<void(T&, const network::address&)>;
+	using const_access_func = std::function<void(const T&, const network::address&)>;
+
+	using insert_func = std::function<void(T&)>;
+
+	bool find(const network::address& address, const access_func& accessor)
+	{
+		return this->elements_.template access<bool>([&](list_type& list)
+		{
+			const auto i = list.find(address);
+			if (i == list.end())
+			{
+				return false;
+			}
+
+			accessor(i->second, i->first);
+			return true;
+		});
+	}
+
+	bool find(const network::address& address, const const_access_func& accessor) const
+	{
+		return this->elements_.template access<bool>([&](const list_type& list)
+		{
+			const auto i = list.find(address);
+			if (i == list.end())
+			{
+				return false;
+			}
+
+			accessor(i->second, i->first);
+			return true;
+		});
+	}
+
+	void iterate(const iterate_func& iterator)
+	{
+		this->elements_.access([&](list_type& list)
+		{
+			iteration_context context{};
+
+			for (auto i = list.begin(); i != list.end();)
+			{
+				context.element_ = &i->second;
+				context.address_ = &i->first;
+				context.remove_ = false;
+
+				iterator(context);
+
+				if (context.remove_)
+				{
+					i = list.erase(i);
+				}
+				else
+				{
+					++i;
+				}
+
+				if (context.stop_iterating_)
+				{
+					break;
+				}
+			}
+		});
+	}
+
+	void iterate(const const_iterate_func& iterator) const
+	{
+		this->elements_.access([&](const list_type& list)
+		{
+			iteration_context context{};
+
+			for (const auto& server : list)
+			{
+				// const_cast is ok here
+				context.element_ = const_cast<T*>(&server.second);
+				context.address_ = &server.first;
+
+				iterator(context);
+
+				if (context.stop_iterating_)
+				{
+					break;
+				}
+			}
+		});
+	}
+
+protected:
+	void insert(const network::address& address, const insert_func& callback)
+	{
+		this->elements_.access([&](list_type& list)
+		{
+			auto entry = list.find(address);
+			if (entry != list.end())
+			{
+				callback(entry->second);
+				return;
+			}
+
+			if (!is_insertion_allowed(list, address))
+			{
+				console::log("Insertion rejected for target:\t%s", address.to_string().data());
+				return;
+			}
+
+			callback(list[address]);
+		});
+	}
+
+private:
+	using list_type = std::unordered_map<network::address, T>;
+	utils::concurrency::container<list_type> elements_;
+
+	static bool is_insertion_allowed(const list_type& list, const network::address& address)
+	{
+		if constexpr (IPLimit == 0)
+		{
+			return true;
+		}
+
+		const auto target_ip = address.get_in_addr().sin_addr.s_addr;
+
+		size_t occurrences = 0;
+		for (const auto& entry : list)
+		{
+			const auto entry_ip = entry.first.get_in_addr().sin_addr.s_addr;
+			if (entry_ip == target_ip)
+			{
+				if (++occurrences >= IPLimit)
+				{
+					return false;
+				}
+			}
+		}
+
+		return true;
+	}
+};

src/server.cpp

@@ -0,0 +1,105 @@
+#include "std_include.hpp"
+#include "server.hpp"
+#include "service.hpp"
+#include "console.hpp"
+
+#include "services/getbots_command.hpp"
+#include "services/getservers_command.hpp"
+#include "services/heartbeat_command.hpp"
+#include "services/info_response_command.hpp"
+#include "services/patch_kill_list_command.hpp"
+#include "services/ping_handler.hpp"
+#include "services/elimination_handler.hpp"
+#include "services/statistics_handler.hpp"
+#include "services/kill_list.hpp"
+
+server::server(const network::address& bind_addr)
+	: server_base(bind_addr)
+{
+	this->register_service<getbots_command>();
+	this->register_service<getservers_command>();
+	this->register_service<heartbeat_command>();
+	this->register_service<info_response_command>();
+	this->register_service<patch_kill_list_command>();
+	this->register_service<ping_handler>();
+	this->register_service<elimination_handler>();
+	this->register_service<statistics_handler>();
+	this->register_service<kill_list>();
+}
+
+server_list& server::get_server_list()
+{
+	return this->server_list_;
+}
+
+const server_list& server::get_server_list() const
+{
+	return this->server_list_;
+}
+
+client_list& server::get_client_list()
+{
+	return this->client_list_;
+}
+
+const client_list& server::get_client_list() const
+{
+	return this->client_list_;
+}
+
+void server::run_frame()
+{
+	for (const auto& service : services_)
+	{
+		try
+		{
+			service->run_frame();
+		}
+		catch (const service::execution_exception& e)
+		{
+			console::warn("Execption in service: %s", e.what());
+		}
+		catch (const std::exception& e)
+		{
+			console::error("Fatal execption in service: %s", e.what());
+		}
+	}
+}
+
+void server::handle_command(const network::address& target, const std::string_view& command,
+                            const std::string_view& data)
+{
+	const auto handler = this->command_services_.find(std::string{command});
+	if (handler == this->command_services_.end())
+	{
+		console::warn("Unhandled command (%s): %.*s", target.to_string().data(), command.size(), command.data());
+		return;
+	}
+
+	std::string ban_reason;
+	if (this->get_service<kill_list>()->contains(target, ban_reason))
+	{
+		console::log("Refused command from server %s - target is on the kill list (%s)", target.to_string().data(), ban_reason.data());
+		return;
+	}
+
+#ifdef DEBUG
+	console::log("Handling command (%s): %.*s - %.*s", target.to_string().data(), command.size(), command.data(),
+	             data.size(), data.data());
+#endif
+
+	try
+	{
+		handler->second->handle_command(target, data);
+	}
+	catch (const service::execution_exception& e)
+	{
+		console::warn("Execption in command %.*s (%s): %s", command.size(), command.data(), target.to_string().data(),
+		              e.what());
+	}
+	catch (const std::exception& e)
+	{
+		console::error("Fatal execption in command %.*s (%s): %s", command.size(), command.data(),
+		               target.to_string().data(), e.what());
+	}
+}

src/server.hpp

@@ -0,0 +1,61 @@
+#pragma once
+
+#include "server_base.hpp"
+#include "server_list.hpp"
+#include "client_list.hpp"
+#include "service.hpp"
+
+class server : public server_base
+{
+public:
+	server(const network::address& bind_addr);
+
+	server_list& get_server_list();
+	const server_list& get_server_list() const;
+
+	client_list& get_client_list();
+	const client_list& get_client_list() const;
+
+	template <typename T>
+	T* get_service()
+	{
+		static_assert(std::is_base_of_v<service, T>, "Type must be a service!");
+
+		for (auto& service : this->services_)
+		{
+			const auto& service_ref = *service;
+			if (typeid(service_ref) == typeid(T))
+			{
+				return reinterpret_cast<T*>(service.get());
+			}
+		}
+
+		return nullptr;
+	}
+
+private:
+	server_list server_list_;
+	client_list client_list_;
+
+	std::vector<std::unique_ptr<service>> services_;
+	std::unordered_map<std::string, service*> command_services_;
+
+	template <typename T, typename... Args>
+	void register_service(Args&&... args)
+	{
+		static_assert(std::is_base_of_v<service, T>, "Type must be a service!");
+
+		auto service = std::make_unique<T>(*this, std::forward<Args>(args)...);
+		auto* const command = service->get_command();
+		if (command)
+		{
+			command_services_[command] = service.get();
+		}
+
+		services_.emplace_back(std::move(service));
+	}
+
+	void run_frame() override;
+	void handle_command(const network::address& target, const std::string_view& command,
+	                    const std::string_view& data) override;
+};

src/server_base.cpp

@@ -0,0 +1,114 @@
+#include "std_include.hpp"
+#include "server_base.hpp"
+#include "console.hpp"
+
+namespace
+{
+	bool is_command(const std::string_view& data)
+	{
+		return data.size() > 4 && *reinterpret_cast<const int32_t*>(data.data()) == -1;
+	}
+
+	int find_separator(const std::string_view& data)
+	{
+		for (size_t i = 4; i < data.size(); ++i)
+		{
+			const auto& chr = data[i];
+
+			if (chr == ' ' || chr == '\n' || chr == '\0')
+			{
+				return static_cast<int>(i);
+			}
+		}
+
+		return -1;
+	}
+}
+
+server_base::server_base(const network::address& bind_addr)
+{
+	if (!this->socket_.bind(bind_addr))
+	{
+		throw std::runtime_error("Failed to bind socket!");
+	}
+
+	this->socket_.set_blocking(false);
+}
+
+void server_base::run()
+{
+	this->stopped_ = false;
+	std::thread thread = std::thread([this]
+	{
+		std::this_thread::sleep_for(30ms);
+		this->run_socket();
+	});
+
+	while (!this->stopped_)
+	{
+		this->run_frame();
+		std::this_thread::sleep_for(100ms);
+	}
+
+	if (thread.joinable())
+	{
+		thread.join();
+	}
+}
+
+void server_base::stop()
+{
+	stopped_ = true;
+}
+
+void server_base::send(const network::address& target, const std::string& command, const std::string& data,
+                       const std::string& separator) const
+{
+	this->socket_.send(target, "\xFF\xFF\xFF\xFF" + command + separator + data);
+}
+
+void server_base::run_socket()
+{
+	while (!this->stopped_)
+	{
+		if (!this->receive_data())
+		{
+			(void)this->socket_.sleep(100ms);
+		}
+	}
+}
+
+bool server_base::receive_data()
+{
+	std::string data{};
+	network::address address{};
+
+	if (!this->socket_.receive(address, data))
+	{
+		return false;
+	}
+
+	if (!is_command(data))
+	{
+		console::warn("Received invalid data from: %s", address.to_string().data());
+		return false;
+	}
+
+	this->parse_data(address, std::string_view{data.data() + 4, data.size() - 4});
+
+	return true;
+}
+
+void server_base::parse_data(const network::address& target, const std::string_view& data)
+{
+	const auto separator = find_separator(data);
+	if (separator <= 0)
+	{
+		this->handle_command(target, data, {});
+	}
+	else
+	{
+		this->handle_command(target, std::string_view{data.data(), static_cast<size_t>(separator)},
+		                     std::string_view{data.data() + (separator + 1), data.size() - (separator + 1)});
+	}
+}

src/server_base.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "network/socket.hpp"
+
+
+class server_base
+{
+public:
+	server_base(const network::address& bind_addr);
+	virtual ~server_base() = default;
+
+	void run();
+	void stop();
+
+	void send(const network::address& target, const std::string& command, const std::string& data,
+	          const std::string& separator = " ") const;
+
+protected:
+	virtual void run_frame() = 0;
+	virtual void handle_command(const network::address& target, const std::string_view& command,
+	                            const std::string_view& data) = 0;
+
+private:
+	network::socket socket_{};
+	volatile bool stopped_ = false;
+
+	void run_socket();
+	[[nodiscard]] bool receive_data();
+	void parse_data(const network::address& target, const std::string_view& data);
+};

src/server_list.cpp

@@ -0,0 +1,39 @@
+#include "std_include.hpp"
+#include "server_list.hpp"
+
+void server_list::find_registered_servers(const game_type game, const int protocol, const access_func& accessor)
+{
+	this->iterate([&](iteration_context& context)
+	{
+		auto& server = context.get();
+		if (server.registered && server.game == game && server.protocol == protocol)
+		{
+			accessor(server, context.get_address());
+		}
+	});
+}
+
+void server_list::find_registered_servers(const game_type game, const int protocol,
+                                          const const_access_func& accessor) const
+{
+	this->iterate([&](const iteration_context& context)
+	{
+		const auto& server = context.get();
+		if (server.registered && server.game == game && server.protocol == protocol)
+		{
+			accessor(server, context.get_address());
+		}
+	});
+}
+
+void server_list::heartbeat(const network::address& address)
+{
+	this->insert(address, [](game_server& server)
+	{
+		if (server.state == game_server::state::can_ping)
+		{
+			server.heartbeat = std::chrono::high_resolution_clock::now();
+			server.state = game_server::state::needs_ping;
+		}
+	});
+}

src/server_list.hpp

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "game_server.hpp"
+#include "network_list.hpp"
+
+class server_list : public network_list<game_server, 30>
+{
+public:
+	void find_registered_servers(game_type game, int protocol, const access_func& accessor);
+	void find_registered_servers(game_type game, int protocol, const const_access_func& accessor) const;
+
+	void heartbeat(const network::address& address);
+};

src/service.hpp

@@ -0,0 +1,56 @@
+#pragma once
+
+#include "network/address.hpp"
+
+class server;
+
+class service
+{
+public:
+	class execution_exception : public std::runtime_error
+	{
+	public:
+		using std::runtime_error::runtime_error;
+	};
+
+	service(server& server)
+		: server_(server)
+	{
+	}
+
+	virtual ~service() = default;
+
+	service(service&&) = delete;
+	service(const service&) = delete;
+	service& operator=(service&&) = delete;
+	service& operator=(const service&) = delete;
+
+	[[nodiscard]] virtual const char* get_command() const { return nullptr; }
+
+	virtual void handle_command([[maybe_unused]] const network::address& target,
+	                            [[maybe_unused]] const std::string_view& data)
+	{
+	}
+
+	virtual void run_frame()
+	{
+	}
+
+protected:
+	[[nodiscard]] const server& get_server() const
+	{
+		return server_;
+	}
+
+	server& get_server()
+	{
+		return server_;
+	}
+
+private:
+	server& server_;
+};
+
+// server and service have a cycle, but fuck, it's easier that way
+// include guards should handle that
+#include "server.hpp"

src/services/elimination_handler.cpp

@@ -0,0 +1,60 @@
+#include <std_include.hpp>
+#include "elimination_handler.hpp"
+
+constexpr auto T7_PROTOCOL = 7;
+
+constexpr size_t MAX_SERVERS_PER_GAME = 15;
+
+void elimination_handler::run_frame()
+{
+	std::unordered_map<game_type, std::unordered_map<network::address, size_t>> server_count;
+
+	auto now = std::chrono::high_resolution_clock::now();
+	this->get_server().get_server_list().iterate([&](server_list::iteration_context& context)
+	{
+		auto& server = context.get();
+		const auto diff = now - server.heartbeat;
+
+		if ((server.state == game_server::state::pinged && diff > 2min) ||
+			(server.state == game_server::state::can_ping && diff > 15min))
+		{
+			context.remove();
+		}
+
+		if (server.game == game_type::unknown)
+		{
+			return;
+		}
+
+		if (server.game == game_type::t7 && server.protocol < T7_PROTOCOL)
+		{
+#ifdef _DEBUG
+			console::info("Removing T7 server '%s' because protocol %i is less than %i\n",
+			              context.get_address().to_string().data(), server.protocol, T7_PROTOCOL);
+#endif
+			context.remove();
+		}
+
+		++server_count[server.game][context.get_address()];
+		if (server_count[server.game][context.get_address()] >= MAX_SERVERS_PER_GAME)
+		{
+#ifdef _DEBUG
+			console::info("Removing server '%s' because it exceeds MAX_SERVERS_PER_GAME\n",
+			              context.get_address().to_string().data());
+#endif
+			context.remove();
+		}
+	});
+
+	now = std::chrono::high_resolution_clock::now();
+	this->get_server().get_client_list().iterate([&](client_list::iteration_context& context)
+	{
+		auto& client = context.get();
+		const auto diff = now - client.heartbeat;
+
+		if (diff > 5min || (!client.registered && diff > 20s))
+		{
+			context.remove();
+		}
+	});
+}

src/services/elimination_handler.hpp

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "../service.hpp"
+
+class elimination_handler : public service
+{
+public:
+	using service::service;
+
+	void run_frame() override;
+};

src/services/getbots_command.cpp

@@ -0,0 +1,56 @@
+#include <std_include.hpp>
+#include "getbots_command.hpp"
+
+#include "../console.hpp"
+
+const char* getbots_command::get_command() const
+{
+	return "getbots";
+}
+
+void getbots_command::handle_command(const network::address& target, const std::string_view&)
+{
+	static const std::vector<std::string> bot_names
+	{
+		"aerosoul",
+		"Eldor",
+		"FutureRave",
+		"Girl",
+		"INeedBots",
+		"INeedGames",
+		"Infamous",
+		"Jebus3211",
+		"Joel",
+		"JTAG",
+		"Laupetin",
+		"Louvenarde",
+		"OneFourOne",
+		"PeterG",
+		"quaK",
+		"RezTech",
+		"sass",
+		"Slykuiper",
+		"st0rm",
+		"xensik",
+		"xoxor4d",
+		"Diamante",
+		"Dsso",
+		"Evan",
+		"FragsAreUs",
+		"FryTechTip",
+		"H3X1C",
+		"homura",
+		"Jimbo",
+		"RektInator",
+		"Squirrel",
+	};
+
+	std::stringstream stream{};
+	for (const auto& bot : bot_names)
+	{
+		stream << bot << std::endl;
+	}
+
+	this->get_server().send(target, "getbotsResponse", stream.str());
+	console::log("Sent bot names: %s", target.to_string().data());
+}

src/services/getbots_command.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "../service.hpp"
+
+class getbots_command : public service
+{
+public:
+	using service::service;
+
+	const char* get_command() const override;
+	void handle_command(const network::address& target, const std::string_view& data) override;
+};

src/services/getservers_command.cpp

@@ -0,0 +1,96 @@
+#include <std_include.hpp>
+#include "getservers_command.hpp"
+
+#include "../console.hpp"
+
+#include <utils/parameters.hpp>
+
+namespace
+{
+	struct prepared_server
+	{
+		uint32_t address;
+		uint16_t port;
+	};
+}
+
+constexpr auto MTU = 1400; // Real UDP MTU is more like 1500 bytes, but we keep a little wiggle room just in case
+constexpr auto DPM_PROTOCOL_ADDRESS_LENGTH = sizeof prepared_server::address;
+constexpr auto DPM_PROTOCOL_PORT_LENGTH = sizeof prepared_server::port;
+
+static_assert(DPM_PROTOCOL_ADDRESS_LENGTH == 4);
+static_assert(DPM_PROTOCOL_PORT_LENGTH == 2);
+
+const char* getservers_command::get_command() const
+{
+	return "getservers";
+}
+
+void getservers_command::handle_command(const network::address& target, const std::string_view& data)
+{
+	const utils::parameters params(data);
+	if (params.size() < 2)
+	{
+		throw execution_exception("Invalid parameter count");
+	}
+
+	const auto& game = params[0];
+
+	const auto* p = params[1].data();
+	char* end;
+	const auto protocol = strtol(params[1].data(), &end, 10);
+	if (p == end)
+	{
+		throw execution_exception("Invalid protocol");
+	}
+
+	const auto game_type = resolve_game_type(game);
+	if (game_type == game_type::unknown)
+	{
+		throw execution_exception("Invalid game type: " + game);
+	}
+
+	std::queue<prepared_server> prepared_servers{};
+
+	this->get_server().get_server_list() //
+		.find_registered_servers(game_type, protocol,
+			[&prepared_servers](const game_server&, const network::address& address)
+		{
+			const auto addr = address.get_in_addr().sin_addr.s_addr;
+			const auto port = htons(address.get_port());
+
+			prepared_servers.push({ addr, port });
+		});
+
+	size_t packet_count = 0;
+	std::string response{};
+
+	while (!prepared_servers.empty())
+	{
+		const auto& server = prepared_servers.front();
+		response.push_back('\\');
+		response.append(reinterpret_cast<const char*>(&server.address), DPM_PROTOCOL_ADDRESS_LENGTH);
+		response.append(reinterpret_cast<const char*>(&server.port), DPM_PROTOCOL_PORT_LENGTH);
+		prepared_servers.pop();
+
+		if (response.size() >= MTU || prepared_servers.empty())
+		{
+			// Only send EOT if the queue is empty (last packet)
+			if (prepared_servers.empty())
+			{
+				response.push_back('\\');
+				response.append("EOT");
+				response.push_back('\0');
+				response.push_back('\0');
+				response.push_back('\0');
+			}
+
+			this->get_server().send(target, "getserversResponse", response);
+			packet_count++;
+
+			response.clear();
+		}
+	}
+
+	console::log("Sent %zu servers in %zu parts for game %s:\t%s", prepared_servers.size(), packet_count, game.data(), target.to_string().data());
+}

src/services/getservers_command.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "../service.hpp"
+
+class getservers_command : public service
+{
+public:
+	using service::service;
+
+	const char* get_command() const override;
+	void handle_command(const network::address& target, const std::string_view& data) override;
+};

src/services/heartbeat_command.cpp

@@ -0,0 +1,12 @@
+#include <std_include.hpp>
+#include "heartbeat_command.hpp"
+
+const char* heartbeat_command::get_command() const
+{
+	return "heartbeat";
+}
+
+void heartbeat_command::handle_command(const network::address& target, [[maybe_unused]] const std::string_view& data)
+{
+	this->get_server().get_server_list().heartbeat(target);
+}

src/services/heartbeat_command.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "../service.hpp"
+
+class heartbeat_command : public service
+{
+public:
+	using service::service;
+
+	const char* get_command() const override;
+	void handle_command(const network::address& target, const std::string_view& data) override;
+};

src/services/info_response_command.cpp

@@ -0,0 +1,60 @@
+#include <std_include.hpp>
+#include "info_response_command.hpp"
+
+#include "../console.hpp"
+
+const char* info_response_command::get_command() const
+{
+	return "infoResponse";
+}
+
+void info_response_command::handle_command(const network::address& target, const std::string_view& data)
+{
+	const auto found = this->get_server().get_server_list().find(
+		target, [&data](game_server& server, const network::address& address)
+		{
+			utils::info_string info{data};
+			const auto game = info.get("gamename");
+			const auto challenge = info.get("challenge");
+
+			const auto game_type = resolve_game_type(game);
+
+			if (game_type == game_type::unknown)
+			{
+				server.state = game_server::state::dead;
+				throw execution_exception{"Invalid game type: " + game};
+			}
+
+			if (server.state != game_server::state::pinged)
+			{
+				throw execution_exception{"Stray info response"};
+			}
+
+			if (challenge != server.challenge)
+			{
+				throw execution_exception{"Invalid challenge"};
+			}
+
+			const auto player_count = atoi(info.get("clients").data());
+			const auto bot_count = atoi(info.get("bots").data());
+			auto real_player_count = player_count - bot_count;
+			real_player_count = std::clamp(real_player_count, 0, 18);
+
+			server.registered = true;
+			server.game = game_type;
+			server.state = game_server::state::can_ping;
+			server.protocol = atoi(info.get("protocol").data());
+			server.clients = static_cast<unsigned int>(real_player_count);
+			server.name = info.get("hostname");
+			server.heartbeat = std::chrono::high_resolution_clock::now();
+			server.info_string = std::move(info);
+
+			console::log("Server registered for game %s (%i):\t%s\t- %s", game.data(), server.protocol,
+			             address.to_string().data(), server.name.data());
+		});
+
+	if (!found)
+	{
+		throw execution_exception{"infoResponse without server!"};
+	}
+}

src/services/info_response_command.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "../service.hpp"
+
+class info_response_command : public service
+{
+public:
+	using service::service;
+
+	const char* get_command() const override;
+	void handle_command(const network::address& target, const std::string_view& data) override;
+};

src/services/kill_list.cpp

@@ -0,0 +1,153 @@
+#include "std_include.hpp"
+#include "kill_list.hpp"
+
+#include <utils/io.hpp>
+
+constexpr auto* kill_file = "./kill.txt";
+
+kill_list::kill_list_entry::kill_list_entry(std::string ip_address, std::string reason)
+	: ip_address_(std::move(ip_address)), reason_(std::move(reason))
+{
+}
+
+bool kill_list::contains(const network::address& address, std::string& reason)
+{
+	auto str_address = address.to_string(false);
+
+	return this->entries_container_.access<bool>([&str_address, &reason](const kill_list_entries& entries)
+	{
+		if (const auto itr = entries.find(str_address); itr != entries.end())
+		{
+			reason = itr->second.reason_;
+			return true;
+		}
+
+		return false;
+	});
+}
+
+void kill_list::add_to_kill_list(const kill_list_entry& add)
+{
+	const auto any_change = this->entries_container_.access<bool>([&add](kill_list_entries& entries)
+	{
+		const auto existing_entry = entries.find(add.ip_address_);
+		if (existing_entry == entries.end() || existing_entry->second.reason_ != add.reason_)
+		{
+			console::info("Added %s to kill list (reason: %s)", add.ip_address_.data(), add.reason_.data());
+			entries[add.ip_address_] = add;
+			return true;
+		}
+
+		return false;
+	});
+
+	if (!any_change)
+	{
+		console::info("%s already in kill list, doing nothing", add.ip_address_.data());
+		return;
+	}
+
+	this->write_to_disk();
+}
+
+void kill_list::remove_from_kill_list(const network::address& remove)
+{
+	this->remove_from_kill_list(remove.to_string());
+}
+
+void kill_list::remove_from_kill_list(const std::string& remove)
+{
+	const auto any_change = this->entries_container_.access<bool>([&remove](kill_list_entries& entries)
+	{
+		if (entries.erase(remove))
+		{
+			console::info("Removed %s from kill list", remove.data());
+			return true;
+		}
+
+		return false;
+	});
+
+	if (!any_change)
+	{
+		console::info("%s not in kill list, doing nothing", remove.data());
+		return;
+	}
+
+	this->write_to_disk();
+}
+
+void kill_list::reload_from_disk()
+{
+	std::string contents;
+	if (!utils::io::read_file(kill_file, &contents))
+	{
+		console::info("Could not find %s, kill list will not be loaded.", kill_file);
+		return;
+	}
+
+	std::istringstream string_stream(contents);
+	std::string line;
+
+	this->entries_container_.access([&string_stream, &line](kill_list_entries& entries)
+	{
+		entries.clear();
+		while (std::getline(string_stream, line))
+		{
+			if (line[0] == '#')
+			{
+				// comments or ignored line
+				continue;
+			}
+
+			std::string ip;
+			std::string comment;
+
+			const auto index = line.find(' ');
+			if (index != std::string::npos)
+			{
+				ip = line.substr(0, index);
+				comment = line.substr(index + 1);
+			}
+			else
+			{
+				ip = line;
+			}
+
+			if (ip.empty())
+			{
+				continue;
+			}
+
+			// Double line breaks from windows' \r\n
+			if (ip[ip.size() - 1] == '\r')
+			{
+				ip.pop_back();
+			}
+
+			entries.emplace(ip, kill_list_entry(ip, comment));
+		}
+
+		console::info("Loaded %zu kill list entries from %s", entries.size(), kill_file);
+	});
+}
+
+void kill_list::write_to_disk()
+{
+	std::ostringstream stream;
+	this->entries_container_.access([&stream](const kill_list_entries& entries)
+	{
+		for (const auto& [ip, entry] : entries)
+		{
+			stream << entry.ip_address_ << " " << entry.reason_ << "\n";
+		}
+
+		utils::io::write_file(kill_file, stream.str(), false);
+		console::info("Wrote %s to disk (%zu entries)", kill_file, entries.size());
+	});
+}
+
+kill_list::kill_list(server& server) : service(server)
+{
+	this->reload_from_disk();
+}

src/services/kill_list.hpp

@@ -0,0 +1,32 @@
+#pragma once
+#include <network/address.hpp>
+
+#include "../service.hpp"
+
+class kill_list : public service
+{
+public:
+	class kill_list_entry
+	{
+	public:
+		kill_list_entry() = default;
+		kill_list_entry(std::string ip_address, std::string reason);
+
+		std::string ip_address_;
+		std::string reason_;
+	};
+
+	kill_list(server& server);
+
+	bool contains(const network::address& address, std::string& reason);
+	void add_to_kill_list(const kill_list_entry& add);
+	void remove_from_kill_list(const network::address& remove);
+	void remove_from_kill_list(const std::string& remove);
+
+private:
+	using kill_list_entries = std::unordered_map<std::string, kill_list_entry>;
+	utils::concurrency::container<kill_list_entries> entries_container_;
+
+	void reload_from_disk();
+	void write_to_disk();
+};

src/services/patch_kill_list_command.cpp

@@ -0,0 +1,65 @@
+#include <std_include.hpp>
+#include "patch_kill_list_command.hpp"
+
+#include "crypto_key.hpp"
+#include "services/kill_list.hpp"
+
+#include <utils/parameters.hpp>
+#include <utils/io.hpp>
+#include <utils/string.hpp>
+
+const char* patch_kill_list_command::get_command() const
+{
+	return "patchkill";
+}
+
+// patchkill timestamp signature add/remove target_ip (ban_reason)
+void patch_kill_list_command::handle_command([[maybe_unused]] const network::address& target, const std::string_view& data)
+{
+	const utils::parameters params(data);
+	if (params.size() < 3)
+	{
+		throw execution_exception("Invalid parameter count");
+	}
+
+	const auto supplied_timestamp = std::chrono::seconds(std::stoul(params[0]));
+	const auto current_timestamp = std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now().time_since_epoch());
+
+	// Abs the duration so that the client can be ahead or behind
+	const auto time_stretch = std::chrono::abs(current_timestamp - supplied_timestamp);
+
+	// not offset by more than 5 minutes in either direction
+	if (time_stretch > 5min)
+	{
+		throw execution_exception(utils::string::va("Invalid timestamp supplied - expected %llu, got %llu, which is more than 5 minutes apart", current_timestamp.count(), supplied_timestamp.count()));
+	}
+
+	const auto& signature = utils::cryptography::base64::decode(params[1]);
+	const auto should_remove = params[2] == "remove"s;
+
+	if (!should_remove && params[2] != "add"s)
+	{
+		throw execution_exception("Invalid parameter #2: should be 'add' or 'remove'");
+	}
+
+	const auto supplied_reason = params.join(4);
+	const auto& crypto_key = crypto_key::get(); 
+	const auto signature_candidate = std::to_string(supplied_timestamp.count());
+
+	if (!utils::cryptography::ecc::verify_message(crypto_key, signature_candidate, signature))
+	{
+		throw execution_exception("Signature verification of the kill list patch key failed");
+	}
+
+	const auto kill_list_service = this->get_server().get_service<kill_list>();
+	const auto& supplied_address = params[3];
+
+	if (should_remove)
+	{
+		kill_list_service->remove_from_kill_list(supplied_address);
+	}
+	else
+	{
+		kill_list_service->add_to_kill_list(kill_list::kill_list_entry(supplied_address, supplied_reason));
+	}
+}

src/services/patch_kill_list_command.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "../service.hpp"
+
+class patch_kill_list_command : public service
+{
+public:
+	using service::service;
+
+	const char* get_command() const override;
+	void handle_command(const network::address& target, const std::string_view& data) override;
+};

src/services/ping_handler.cpp

@@ -0,0 +1,26 @@
+#include <std_include.hpp>
+#include "ping_handler.hpp"
+
+#include <utils/cryptography.hpp>
+
+void ping_handler::run_frame()
+{
+	auto count = 0;
+	this->get_server().get_server_list().iterate([&](server_list::iteration_context& context)
+	{
+		auto& server = context.get();
+		if (server.state == game_server::state::needs_ping)
+		{
+			server.state = game_server::state::pinged;
+			server.challenge = utils::cryptography::random::get_challenge();
+			server.heartbeat = std::chrono::high_resolution_clock::now();
+
+			this->get_server().send(context.get_address(), "getinfo", server.challenge);
+
+			if (20 >= ++count)
+			{
+				context.stop_iterating();
+			}
+		}
+	});
+}

src/services/ping_handler.hpp

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "../service.hpp"
+
+class ping_handler : public service
+{
+public:
+	using service::service;
+
+	void run_frame() override;
+};

src/services/statistics_handler.cpp

@@ -0,0 +1,86 @@
+#include <std_include.hpp>
+#include "statistics_handler.hpp"
+#include "../console.hpp"
+
+#include <utils/io.hpp>
+#include <utils/string.hpp>
+
+namespace
+{
+	void write_stats(const std::map<game_type, std::vector<std::pair<std::string, network::address>>>& servers,
+	                 std::map<game_type, uint32_t>& players)
+	{
+		rapidjson::Document root{};
+		root.SetObject();
+
+		for (const auto& game_servers : servers)
+		{
+			const auto server_count = static_cast<uint32_t>(game_servers.second.size());
+			const auto player_count = players[game_servers.first];
+
+			rapidjson::Value game{};
+			game.SetObject();
+
+			game.AddMember("servers", server_count, root.GetAllocator());
+			game.AddMember("players", player_count, root.GetAllocator());
+
+			auto game_name = resolve_game_type_name(game_servers.first);
+			game_name = utils::string::to_lower(game_name);
+
+			rapidjson::Value game_name_object(game_name, root.GetAllocator());
+			root.AddMember(game_name_object, game, root.GetAllocator());
+		}
+
+		rapidjson::StringBuffer root_buffer{};
+		rapidjson::Writer<rapidjson::StringBuffer, rapidjson::Document::EncodingType, rapidjson::ASCII<>>
+			root_writer(root_buffer);
+		root.Accept(root_writer);
+
+		std::string root_data(root_buffer.GetString(), root_buffer.GetLength());
+		utils::io::write_file("/var/www/master.xlabs.dev/stats.json", root_data);
+	}
+}
+
+statistics_handler::statistics_handler(server& server)
+	: service(server)
+	  , last_print(std::chrono::high_resolution_clock::now())
+{
+}
+
+void statistics_handler::run_frame()
+{
+	const auto now = std::chrono::high_resolution_clock::now();
+	if (now - this->last_print < 5min)
+	{
+		return;
+	}
+
+	std::map<game_type, uint32_t> players{};
+	std::map<game_type, std::vector<std::pair<std::string, network::address>>> servers;
+
+	this->last_print = std::chrono::high_resolution_clock::now();
+	this->get_server().get_server_list().iterate([&servers, &players](const server_list::iteration_context& context)
+	{
+		const auto& server = context.get();
+		if (server.registered)
+		{
+			servers[server.game].emplace_back(server.name, context.get_address());
+			players[server.game] += server.clients;
+		}
+	});
+
+	console::lock _{};
+
+	for (const auto& game_servers : servers)
+	{
+		console::log("%s (%d):", resolve_game_type_name(game_servers.first).data(),
+		             static_cast<uint32_t>(game_servers.second.size()));
+
+		for (const auto& server : game_servers.second)
+		{
+			console::log("\t%s\t%s", server.second.to_string().data(), server.first.data());
+		}
+	}
+
+	write_stats(servers, players);
+}

src/services/statistics_handler.hpp

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "../service.hpp"
+
+class statistics_handler : public service
+{
+public:
+	statistics_handler(server& server);
+
+	void run_frame() override;
+
+private:
+	std::chrono::high_resolution_clock::time_point last_print;
+};

src/std_include.cpp

@@ -0,0 +1,33 @@
+#include <std_include.hpp>
+
+extern "C"
+{
+	int s_read_arc4random(void*, size_t)
+	{
+		return -1;
+	}
+
+#if !defined(__linux__)
+	int s_read_getrandom(void*, size_t)
+	{
+		return -1;
+	}
+#endif
+
+#ifdef _WIN32
+	int s_read_urandom(void*, size_t)
+	{
+		return -1;
+	}
+
+	int s_read_ltm_rng(void*, size_t)
+	{
+		return -1;
+	}
+#else
+	int s_read_wincsp(void*, size_t)
+	{
+		return -1;
+	}
+#endif
+}

src/std_include.hpp

@@ -0,0 +1,71 @@
+#ifdef _WIN32
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN
+
+#include <Windows.h>
+#include <WinSock2.h>
+#include <WS2tcpip.h>
+
+#else
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define ZeroMemory(x, y) std::memset(x, 0, y)
+
+#endif
+
+// min and max is required by gdi, therefore NOMINMAX won't work
+#ifdef max
+#undef max
+#endif
+
+#ifdef min
+#undef min
+#endif
+
+#include <cassert>
+#include <csignal>
+#include <cstdarg>
+#include <cstdint>
+#include <cstdio>
+#include <ctime>
+
+#include <atomic>
+#include <chrono>
+#include <filesystem>
+#include <fstream>
+#include <functional>
+#include <iostream>
+#include <map>
+#include <mutex>
+#include <optional>
+#include <queue>
+#include <regex>
+#include <sstream>
+#include <thread>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+#include <gsl/gsl>
+#include <rapidjson/document.h>
+#include <rapidjson/prettywriter.h>
+#include <rapidjson/stringbuffer.h>
+
+#ifdef _WIN32
+
+#pragma comment(lib, "ntdll.lib")
+#pragma comment(lib, "ws2_32.lib")
+#pragma comment(lib, "urlmon.lib" )
+#pragma comment(lib, "iphlpapi.lib")
+
+#endif
+
+using namespace std::literals;

src/utils/compression.cpp

@@ -0,0 +1,170 @@
+#include <std_include.hpp>
+
+#include "compression.hpp"
+
+#include <zlib.h>
+#include <zip.h>
+
+#include <gsl/gsl>
+
+#include "io.hpp"
+
+namespace utils::compression
+{
+	namespace zlib
+	{
+		namespace
+		{
+			class zlib_stream
+			{
+			public:
+				zlib_stream()
+				{
+					memset(&stream_, 0, sizeof(stream_));
+					valid_ = inflateInit(&stream_) == Z_OK;
+				}
+
+				zlib_stream(zlib_stream&&) = delete;
+				zlib_stream(const zlib_stream&) = delete;
+				zlib_stream& operator=(zlib_stream&&) = delete;
+				zlib_stream& operator=(const zlib_stream&) = delete;
+
+				~zlib_stream()
+				{
+					if (valid_)
+					{
+						inflateEnd(&stream_);
+					}
+				}
+
+				z_stream& get()
+				{
+					return stream_; //
+				}
+
+				bool is_valid() const
+				{
+					return valid_;
+				}
+
+			private:
+				bool valid_{false};
+				z_stream stream_{};
+			};
+		}
+
+		std::string decompress(const std::string& data)
+		{
+			std::string buffer{};
+			zlib_stream stream_container{};
+			if (!stream_container.is_valid())
+			{
+				return {};
+			}
+
+			int ret{};
+			size_t offset = 0;
+			static thread_local uint8_t dest[CHUNK] = {0};
+			auto& stream = stream_container.get();
+
+			do
+			{
+				const auto input_size = std::min(sizeof(dest), data.size() - offset);
+				stream.avail_in = static_cast<uInt>(input_size);
+				stream.next_in = reinterpret_cast<const Bytef*>(data.data()) + offset;
+				offset += stream.avail_in;
+
+				do
+				{
+					stream.avail_out = sizeof(dest);
+					stream.next_out = dest;
+
+					ret = inflate(&stream, Z_NO_FLUSH);
+					if (ret != Z_OK && ret != Z_STREAM_END)
+					{
+						return {};
+					}
+
+					buffer.insert(buffer.end(), dest, dest + sizeof(dest) - stream.avail_out);
+				}
+				while (stream.avail_out == 0);
+			}
+			while (ret != Z_STREAM_END);
+
+			return buffer;
+		}
+
+		std::string compress(const std::string& data)
+		{
+			std::string result{};
+			auto length = compressBound(static_cast<uLong>(data.size()));
+			result.resize(length);
+
+			if (compress2(reinterpret_cast<Bytef*>(result.data()), &length,
+			              reinterpret_cast<const Bytef*>(data.data()), static_cast<uLong>(data.size()),
+			              Z_BEST_COMPRESSION) != Z_OK)
+			{
+				return {};
+			}
+
+			result.resize(length);
+			return result;
+		}
+	}
+
+	namespace zip
+	{
+		namespace
+		{
+			bool add_file(zipFile& zip_file, const std::string& filename, const std::string& data)
+			{
+				const auto zip_64 = data.size() > 0xffffffff ? 1 : 0;
+				if (ZIP_OK != zipOpenNewFileInZip64(zip_file, filename.data(), nullptr, nullptr, 0, nullptr, 0, nullptr,
+				                                    Z_DEFLATED, Z_BEST_COMPRESSION, zip_64))
+				{
+					return false;
+				}
+
+				const auto _ = gsl::finally([&zip_file]()
+				{
+					zipCloseFileInZip(zip_file);
+				});
+
+				return ZIP_OK == zipWriteInFileInZip(zip_file, data.data(), static_cast<unsigned>(data.size()));
+			}
+		}
+
+		void archive::add(std::string filename, std::string data)
+		{
+			this->files_[std::move(filename)] = std::move(data);
+		}
+
+		bool archive::write(const std::string& filename, const std::string& comment)
+		{
+			// Hack to create the directory :3
+			io::write_file(filename, {});
+			io::remove_file(filename);
+
+			auto* zip_file = zipOpen64(filename.data(), 0);
+			if (!zip_file)
+			{
+				return false;
+			}
+
+			const auto _ = gsl::finally([&zip_file, &comment]()
+			{
+				zipClose(zip_file, comment.empty() ? nullptr : comment.data());
+			});
+
+			for (const auto& file : this->files_)
+			{
+				if (!add_file(zip_file, file.first, file.second))
+				{
+					return false;
+				}
+			}
+
+			return true;
+		}
+	}
+}

src/utils/compression.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <string>
+#include <unordered_map>
+
+#define CHUNK 16384u
+
+namespace utils::compression
+{
+	namespace zlib
+	{
+		std::string compress(const std::string& data);
+		std::string decompress(const std::string& data);
+	}
+
+	namespace zip
+	{
+		class archive
+		{
+		public:
+			void add(std::string filename, std::string data);
+			bool write(const std::string& filename, const std::string& comment = {});
+
+		private:
+			std::unordered_map<std::string, std::string> files_;
+		};
+	}
+};

src/utils/concurrency.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <mutex>
+
+namespace utils::concurrency
+{
+	template <typename T, typename MutexType = std::mutex>
+	class container
+	{
+	public:
+		template <typename R = void, typename F>
+		R access(F&& accessor) const
+		{
+			std::lock_guard<MutexType> _{mutex_};
+			return accessor(object_);
+		}
+
+		template <typename R = void, typename F>
+		R access(F&& accessor)
+		{
+			std::lock_guard<MutexType> _{mutex_};
+			return accessor(object_);
+		}
+
+		template <typename R = void, typename F>
+		R access_with_lock(F&& accessor) const
+		{
+			std::unique_lock<MutexType> lock{mutex_};
+			return accessor(object_, lock);
+		}
+
+		template <typename R = void, typename F>
+		R access_with_lock(F&& accessor)
+		{
+			std::unique_lock<MutexType> lock{mutex_};
+			return accessor(object_, lock);
+		}
+
+		T& get_raw() { return object_; }
+		const T& get_raw() const { return object_; }
+
+	private:
+		mutable MutexType mutex_{};
+		T object_{};
+	};
+}

src/utils/cryptography.cpp

@@ -0,0 +1,649 @@
+#include <std_include.hpp>
+#include <random>
+
+#include "string.hpp"
+#include "cryptography.hpp"
+
+/// http://www.opensource.apple.com/source/CommonCrypto/CommonCrypto-55010/Source/libtomcrypt/doc/libTomCryptDoc.pdf
+
+namespace utils::cryptography
+{
+	namespace
+	{
+		struct __
+		{
+			__()
+			{
+				ltc_mp = ltm_desc;
+
+				register_cipher(&aes_desc);
+				register_cipher(&des3_desc);
+
+				register_prng(&sprng_desc);
+				register_prng(&fortuna_desc);
+				register_prng(&yarrow_desc);
+
+				register_hash(&sha1_desc);
+				register_hash(&sha256_desc);
+				register_hash(&sha512_desc);
+			}
+		} ___;
+
+		[[maybe_unused]] const char* cs(const uint8_t* data)
+		{
+			return reinterpret_cast<const char*>(data);
+		}
+
+		[[maybe_unused]] char* cs(uint8_t* data)
+		{
+			return reinterpret_cast<char*>(data);
+		}
+
+		[[maybe_unused]] const uint8_t* cs(const char* data)
+		{
+			return reinterpret_cast<const uint8_t*>(data);
+		}
+
+		[[maybe_unused]] uint8_t* cs(char* data)
+		{
+			return reinterpret_cast<uint8_t*>(data);
+		}
+
+		[[maybe_unused]] unsigned long ul(const size_t value)
+		{
+			return static_cast<unsigned long>(value);
+		}
+
+		class prng
+		{
+		public:
+			prng(const ltc_prng_descriptor& descriptor, const bool autoseed = true)
+				: state_(std::make_unique<prng_state>())
+				  , descriptor_(descriptor)
+			{
+				this->id_ = register_prng(&descriptor);
+				if (this->id_ == -1)
+				{
+					throw std::runtime_error("PRNG "s + this->descriptor_.name + " could not be registered!");
+				}
+
+				if (autoseed)
+				{
+					this->auto_seed();
+				}
+				else
+				{
+					this->descriptor_.start(this->state_.get());
+				}
+			}
+
+			~prng()
+			{
+				this->descriptor_.done(this->state_.get());
+			}
+
+			prng_state* get_state() const
+			{
+				this->descriptor_.ready(this->state_.get());
+				return this->state_.get();
+			}
+
+			int get_id() const
+			{
+				return this->id_;
+			}
+
+			void add_entropy(const void* data, const size_t length) const
+			{
+				this->descriptor_.add_entropy(static_cast<const uint8_t*>(data), ul(length), this->state_.get());
+			}
+
+			void read(void* data, const size_t length) const
+			{
+				this->descriptor_.read(static_cast<unsigned char*>(data), ul(length), this->get_state());
+			}
+
+		private:
+			int id_;
+			std::unique_ptr<prng_state> state_;
+			const ltc_prng_descriptor& descriptor_;
+
+			void auto_seed() const
+			{
+				rng_make_prng(128, this->id_, this->state_.get(), nullptr);
+
+				int i[4]; // uninitialized data
+				auto* i_ptr = &i;
+				this->add_entropy(&i, sizeof(i));
+				this->add_entropy(&i_ptr, sizeof(i_ptr));
+
+				auto t = std::time(nullptr);
+				this->add_entropy(&t, sizeof(t));
+
+				std::random_device rd{};
+				for (auto j = 0; j < 4; ++j)
+				{
+					const auto x = rd();
+					this->add_entropy(&x, sizeof(x));
+				}
+			}
+		};
+
+		const prng prng_(fortuna_desc);
+	}
+
+	ecc::key::key()
+	{
+		ZeroMemory(&this->key_storage_, sizeof(this->key_storage_));
+	}
+
+	ecc::key::~key()
+	{
+		this->free();
+	}
+
+	ecc::key::key(key&& obj) noexcept
+		: key()
+	{
+		this->operator=(std::move(obj));
+	}
+
+	ecc::key::key(const key& obj)
+		: key()
+	{
+		this->operator=(obj);
+	}
+
+	ecc::key& ecc::key::operator=(key&& obj) noexcept
+	{
+		if (this != &obj)
+		{
+			std::memmove(&this->key_storage_, &obj.key_storage_, sizeof(this->key_storage_));
+			ZeroMemory(&obj.key_storage_, sizeof(obj.key_storage_));
+		}
+
+		return *this;
+	}
+
+	ecc::key& ecc::key::operator=(const key& obj)
+	{
+		if (this != &obj && obj.is_valid())
+		{
+			this->deserialize(obj.serialize(obj.key_storage_.type));
+		}
+
+		return *this;
+	}
+
+	bool ecc::key::is_valid() const
+	{
+		return (!memory::is_set(&this->key_storage_, 0, sizeof(this->key_storage_)));
+	}
+
+	ecc_key& ecc::key::get()
+	{
+		return this->key_storage_;
+	}
+
+	const ecc_key& ecc::key::get() const
+	{
+		return this->key_storage_;
+	}
+
+	std::string ecc::key::get_public_key() const
+	{
+		uint8_t buffer[512] = {0};
+		unsigned long length = sizeof(buffer);
+
+		if (ecc_ansi_x963_export(&this->key_storage_, buffer, &length) == CRYPT_OK)
+		{
+			return std::string(cs(buffer), length);
+		}
+
+		return {};
+	}
+
+	void ecc::key::set(const std::string& pub_key_buffer)
+	{
+		this->free();
+
+		if (ecc_ansi_x963_import(cs(pub_key_buffer.data()),
+		                         ul(pub_key_buffer.size()),
+		                         &this->key_storage_) != CRYPT_OK)
+		{
+			ZeroMemory(&this->key_storage_, sizeof(this->key_storage_));
+		}
+	}
+
+	void ecc::key::deserialize(const std::string& key)
+	{
+		this->free();
+
+		if (ecc_import(cs(key.data()), ul(key.size()),
+		               &this->key_storage_) != CRYPT_OK
+		)
+		{
+			ZeroMemory(&this->key_storage_, sizeof(this->key_storage_));
+		}
+	}
+
+	std::string ecc::key::serialize(const int type) const
+	{
+		uint8_t buffer[4096] = {0};
+		unsigned long length = sizeof(buffer);
+
+		if (ecc_export(buffer, &length, type, &this->key_storage_) == CRYPT_OK)
+		{
+			return std::string(cs(buffer), length);
+		}
+
+		return {};
+	}
+
+	void ecc::key::free()
+	{
+		if (this->is_valid())
+		{
+			ecc_free(&this->key_storage_);
+		}
+
+		ZeroMemory(&this->key_storage_, sizeof(this->key_storage_));
+	}
+
+	bool ecc::key::operator==(key& key) const
+	{
+		return (this->is_valid() && key.is_valid() && this->serialize(PK_PUBLIC) == key.serialize(PK_PUBLIC));
+	}
+
+	uint64_t ecc::key::get_hash() const
+	{
+		const auto hash = sha1::compute(this->get_public_key());
+		if (hash.size() >= 8)
+		{
+			return *reinterpret_cast<const uint64_t*>(hash.data());
+		}
+
+		return 0;
+	}
+
+	ecc::key ecc::generate_key(const int bits)
+	{
+		key key;
+		ecc_make_key(prng_.get_state(), prng_.get_id(), bits / 8, &key.get());
+
+		return key;
+	}
+
+	ecc::key ecc::generate_key(const int bits, const std::string& entropy)
+	{
+		key key{};
+		const prng yarrow(yarrow_desc, false);
+		yarrow.add_entropy(entropy.data(), entropy.size());
+
+		ecc_make_key(yarrow.get_state(), yarrow.get_id(), bits / 8, &key.get());
+
+		return key;
+	}
+
+	std::string ecc::sign_message(const key& key, const std::string& message)
+	{
+		if (!key.is_valid()) return {};
+
+		uint8_t buffer[512];
+		unsigned long length = sizeof(buffer);
+
+		const auto hash = sha512::compute(message);
+
+		ecc_sign_hash(cs(hash.data()), ul(hash.size()), buffer, &length, prng_.get_state(), prng_.get_id(),
+		              &key.get());
+
+		return std::string(cs(buffer), length);
+	}
+
+	bool ecc::verify_message(const key& key, const std::string& message, const std::string& signature)
+	{
+		if (!key.is_valid()) return false;
+
+		const auto hash = sha512::compute(message);
+
+		auto result = 0;
+		return (ecc_verify_hash(cs(signature.data()),
+		                        ul(signature.size()),
+		                        cs(hash.data()),
+		                        ul(hash.size()), &result,
+		                        &key.get()) == CRYPT_OK && result != 0);
+	}
+
+	bool ecc::encrypt(const key& key, std::string& data)
+	{
+		std::string out_data{};
+		out_data.resize(std::max(ul(data.size() * 3), ul(0x100)));
+
+		auto out_len = ul(out_data.size());
+		auto crypt = [&]()
+		{
+			return ecc_encrypt_key(cs(data.data()), ul(data.size()), cs(out_data.data()), &out_len,
+			                       prng_.get_state(), prng_.get_id(), find_hash("sha512"), &key.get());
+		};
+
+		auto res = crypt();
+
+		if (res == CRYPT_BUFFER_OVERFLOW)
+		{
+			out_data.resize(out_len);
+			res = crypt();
+		}
+
+		if (res != CRYPT_OK)
+		{
+			return false;
+		}
+
+		out_data.resize(out_len);
+		data = std::move(out_data);
+		return true;
+	}
+
+	bool ecc::decrypt(const key& key, std::string& data)
+	{
+		std::string out_data{};
+		out_data.resize(std::max(ul(data.size() * 3), ul(0x100)));
+
+		auto out_len = ul(out_data.size());
+		auto crypt = [&]()
+		{
+			return ecc_decrypt_key(cs(data.data()), ul(data.size()), cs(out_data.data()), &out_len, &key.get());
+		};
+
+		auto res = crypt();
+
+		if (res == CRYPT_BUFFER_OVERFLOW)
+		{
+			out_data.resize(out_len);
+			res = crypt();
+		}
+
+		if (res != CRYPT_OK)
+		{
+			return false;
+		}
+
+		out_data.resize(out_len);
+		data = std::move(out_data);
+		return true;
+	}
+
+	std::string rsa::encrypt(const std::string& data, const std::string& hash, const std::string& key)
+	{
+		rsa_key new_key;
+		rsa_import(cs(key.data()), ul(key.size()), &new_key);
+		const auto _ = gsl::finally([&]()
+		{
+			rsa_free(&new_key);
+		});
+
+
+		std::string out_data{};
+		out_data.resize(std::max(ul(data.size() * 3), ul(0x100)));
+
+		auto out_len = ul(out_data.size());
+		auto crypt = [&]()
+		{
+			return rsa_encrypt_key(cs(data.data()), ul(data.size()), cs(out_data.data()), &out_len, cs(hash.data()),
+			                       ul(hash.size()), prng_.get_state(), prng_.get_id(), find_hash("sha512"), &new_key);
+		};
+
+		auto res = crypt();
+
+		if (res == CRYPT_BUFFER_OVERFLOW)
+		{
+			out_data.resize(out_len);
+			res = crypt();
+		}
+
+		if (res == CRYPT_OK)
+		{
+			out_data.resize(out_len);
+			return out_data;
+		}
+
+		return {};
+	}
+
+	std::string des3::encrypt(const std::string& data, const std::string& iv, const std::string& key)
+	{
+		std::string enc_data;
+		enc_data.resize(data.size());
+
+		symmetric_CBC cbc;
+		const auto des3 = find_cipher("3des");
+
+		cbc_start(des3, cs(iv.data()), cs(key.data()), static_cast<int>(key.size()), 0, &cbc);
+		cbc_encrypt(cs(data.data()), cs(enc_data.data()), ul(data.size()), &cbc);
+		cbc_done(&cbc);
+
+		return enc_data;
+	}
+
+	std::string des3::decrypt(const std::string& data, const std::string& iv, const std::string& key)
+	{
+		std::string dec_data;
+		dec_data.resize(data.size());
+
+		symmetric_CBC cbc;
+		const auto des3 = find_cipher("3des");
+
+		cbc_start(des3, cs(iv.data()), cs(key.data()), static_cast<int>(key.size()), 0, &cbc);
+		cbc_decrypt(cs(data.data()), cs(dec_data.data()), ul(data.size()), &cbc);
+		cbc_done(&cbc);
+
+		return dec_data;
+	}
+
+	std::string tiger::compute(const std::string& data, const bool hex)
+	{
+		return compute(cs(data.data()), data.size(), hex);
+	}
+
+	std::string tiger::compute(const uint8_t* data, const size_t length, const bool hex)
+	{
+		uint8_t buffer[24] = {0};
+
+		hash_state state;
+		tiger_init(&state);
+		tiger_process(&state, data, ul(length));
+		tiger_done(&state, buffer);
+
+		std::string hash(cs(buffer), sizeof(buffer));
+		if (!hex) return hash;
+
+		return string::dump_hex(hash, {});
+	}
+
+	std::string aes::encrypt(const std::string& data, const std::string& iv, const std::string& key)
+	{
+		std::string enc_data;
+		enc_data.resize(data.size());
+
+		symmetric_CBC cbc;
+		const auto aes = find_cipher("aes");
+
+		cbc_start(aes, cs(iv.data()), cs(key.data()),
+		          static_cast<int>(key.size()), 0, &cbc);
+		cbc_encrypt(cs(data.data()),
+		            cs(enc_data.data()),
+		            ul(data.size()), &cbc);
+		cbc_done(&cbc);
+
+		return enc_data;
+	}
+
+	std::string aes::decrypt(const std::string& data, const std::string& iv, const std::string& key)
+	{
+		std::string dec_data;
+		dec_data.resize(data.size());
+
+		symmetric_CBC cbc;
+		const auto aes = find_cipher("aes");
+
+		cbc_start(aes, cs(iv.data()), cs(key.data()),
+		          static_cast<int>(key.size()), 0, &cbc);
+		cbc_decrypt(cs(data.data()),
+		            cs(dec_data.data()),
+		            ul(data.size()), &cbc);
+		cbc_done(&cbc);
+
+		return dec_data;
+	}
+
+	std::string hmac_sha1::compute(const std::string& data, const std::string& key)
+	{
+		std::string buffer;
+		buffer.resize(20);
+
+		hmac_state state;
+		hmac_init(&state, find_hash("sha1"), cs(key.data()), ul(key.size()));
+		hmac_process(&state, cs(data.data()), static_cast<int>(data.size()));
+
+		auto out_len = ul(buffer.size());
+		hmac_done(&state, cs(buffer.data()), &out_len);
+
+		buffer.resize(out_len);
+		return buffer;
+	}
+
+	std::string sha1::compute(const std::string& data, const bool hex)
+	{
+		return compute(cs(data.data()), data.size(), hex);
+	}
+
+	std::string sha1::compute(const uint8_t* data, const size_t length, const bool hex)
+	{
+		uint8_t buffer[20] = {0};
+
+		hash_state state;
+		sha1_init(&state);
+		sha1_process(&state, data, ul(length));
+		sha1_done(&state, buffer);
+
+		std::string hash(cs(buffer), sizeof(buffer));
+		if (!hex) return hash;
+
+		return string::dump_hex(hash, {});
+	}
+
+	std::string sha256::compute(const std::string& data, const bool hex)
+	{
+		return compute(cs(data.data()), data.size(), hex);
+	}
+
+	std::string sha256::compute(const uint8_t* data, const size_t length, const bool hex)
+	{
+		uint8_t buffer[32] = {0};
+
+		hash_state state;
+		sha256_init(&state);
+		sha256_process(&state, data, ul(length));
+		sha256_done(&state, buffer);
+
+		std::string hash(cs(buffer), sizeof(buffer));
+		if (!hex) return hash;
+
+		return string::dump_hex(hash, {});
+	}
+
+	std::string sha512::compute(const std::string& data, const bool hex)
+	{
+		return compute(cs(data.data()), data.size(), hex);
+	}
+
+	std::string sha512::compute(const uint8_t* data, const size_t length, const bool hex)
+	{
+		uint8_t buffer[64] = {0};
+
+		hash_state state;
+		sha512_init(&state);
+		sha512_process(&state, data, ul(length));
+		sha512_done(&state, buffer);
+
+		std::string hash(cs(buffer), sizeof(buffer));
+		if (!hex) return hash;
+
+		return string::dump_hex(hash, {});
+	}
+
+	std::string base64::encode(const uint8_t* data, const size_t len)
+	{
+		std::string result;
+		result.resize((len + 2) * 2);
+
+		auto out_len = ul(result.size());
+		if (base64_encode(data, ul(len), result.data(), &out_len) != CRYPT_OK)
+		{
+			return {};
+		}
+
+		result.resize(out_len);
+		return result;
+	}
+
+	std::string base64::encode(const std::string& data)
+	{
+		return base64::encode(cs(data.data()), static_cast<unsigned>(data.size()));
+	}
+
+	std::string base64::decode(const std::string& data)
+	{
+		std::string result;
+		result.resize((data.size() + 2) * 2);
+
+		auto out_len = ul(result.size());
+		if (base64_decode(data.data(), ul(data.size()), cs(result.data()), &out_len) != CRYPT_OK)
+		{
+			return {};
+		}
+
+		result.resize(out_len);
+		return result;
+	}
+
+	unsigned int jenkins_one_at_a_time::compute(const std::string& data)
+	{
+		return compute(data.data(), data.size());
+	}
+
+	unsigned int jenkins_one_at_a_time::compute(const char* key, const size_t len)
+	{
+		unsigned int hash, i;
+		for (hash = i = 0; i < len; ++i)
+		{
+			hash += key[i];
+			hash += (hash << 10);
+			hash ^= (hash >> 6);
+		}
+		hash += (hash << 3);
+		hash ^= (hash >> 11);
+		hash += (hash << 15);
+		return hash;
+	}
+
+	uint32_t random::get_integer()
+	{
+		uint32_t result;
+		random::get_data(&result, sizeof(result));
+		return result;
+	}
+
+	std::string random::get_challenge()
+	{
+		std::string result;
+		result.resize(sizeof(uint32_t));
+		random::get_data(result.data(), result.size());
+		return string::dump_hex(result, {});
+	}
+
+	void random::get_data(void* data, const size_t size)
+	{
+		prng_.read(data, size);
+	}
+}

src/utils/cryptography.hpp

@@ -0,0 +1,118 @@
+#pragma once
+
+#include <string>
+#include <tomcrypt.h>
+
+namespace utils::cryptography
+{
+	namespace ecc
+	{
+		class key final
+		{
+		public:
+			key();
+			~key();
+
+			key(key&& obj) noexcept;
+			key(const key& obj);
+			key& operator=(key&& obj) noexcept;
+			key& operator=(const key& obj);
+
+			bool is_valid() const;
+
+			ecc_key& get();
+			const ecc_key& get() const;
+
+			std::string get_public_key() const;
+
+			void set(const std::string& pub_key_buffer);
+
+			void deserialize(const std::string& key);
+
+			std::string serialize(int type = PK_PRIVATE) const;
+
+			void free();
+
+			bool operator==(key& key) const;
+
+			uint64_t get_hash() const;
+
+		private:
+			ecc_key key_storage_{};
+		};
+
+		key generate_key(int bits);
+		key generate_key(int bits, const std::string& entropy);
+		std::string sign_message(const key& key, const std::string& message);
+		bool verify_message(const key& key, const std::string& message, const std::string& signature);
+
+		bool encrypt(const key& key, std::string& data);
+		bool decrypt(const key& key, std::string& data);
+	}
+
+	namespace rsa
+	{
+		std::string encrypt(const std::string& data, const std::string& hash, const std::string& key);
+	}
+
+	namespace des3
+	{
+		std::string encrypt(const std::string& data, const std::string& iv, const std::string& key);
+		std::string decrypt(const std::string& data, const std::string& iv, const std::string& key);
+	}
+
+	namespace tiger
+	{
+		std::string compute(const std::string& data, bool hex = false);
+		std::string compute(const uint8_t* data, size_t length, bool hex = false);
+	}
+
+	namespace aes
+	{
+		std::string encrypt(const std::string& data, const std::string& iv, const std::string& key);
+		std::string decrypt(const std::string& data, const std::string& iv, const std::string& key);
+	}
+
+	namespace hmac_sha1
+	{
+		std::string compute(const std::string& data, const std::string& key);
+	}
+
+	namespace sha1
+	{
+		std::string compute(const std::string& data, bool hex = false);
+		std::string compute(const uint8_t* data, size_t length, bool hex = false);
+	}
+
+	namespace sha256
+	{
+		std::string compute(const std::string& data, bool hex = false);
+		std::string compute(const uint8_t* data, size_t length, bool hex = false);
+	}
+
+	namespace sha512
+	{
+		std::string compute(const std::string& data, bool hex = false);
+		std::string compute(const uint8_t* data, size_t length, bool hex = false);
+	}
+
+	namespace base64
+	{
+		std::string encode(const uint8_t* data, size_t len);
+		std::string encode(const std::string& data);
+		std::string decode(const std::string& data);
+	}
+
+	namespace jenkins_one_at_a_time
+	{
+		unsigned int compute(const std::string& data);
+		unsigned int compute(const char* key, size_t len);
+	};
+
+	namespace random
+	{
+		uint32_t get_integer();
+		std::string get_challenge();
+		void get_data(void* data, size_t size);
+	}
+}

src/utils/http.cpp

@@ -0,0 +1,59 @@
+#include <std_include.hpp>
+
+#include "http.hpp"
+#include <curl/curl.h>
+
+namespace utils::http
+{
+	namespace
+	{
+		size_t write_callback(void* contents, const size_t size, const size_t nmemb, void* userp)
+		{
+			static_cast<std::string*>(userp)->append(static_cast<char*>(contents), size * nmemb);
+			return size * nmemb;
+		}
+	}
+
+	std::optional<std::string> get_data(const std::string& url, const headers& headers)
+	{
+		curl_slist* header_list = nullptr;
+		auto* curl = curl_easy_init();
+		if (!curl)
+		{
+			return {};
+		}
+
+		auto _ = gsl::finally([&]()
+		{
+			curl_slist_free_all(header_list);
+			curl_easy_cleanup(curl);
+		});
+
+		
+		for(const auto& header : headers)
+		{
+			auto data = header.first + ": "s + header.second;
+			header_list = curl_slist_append(header_list, data.data());
+		}
+		
+		std::string buffer{};
+		curl_easy_setopt(curl, CURLOPT_HTTPHEADER, header_list);
+		curl_easy_setopt(curl, CURLOPT_URL, url.data());
+		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
+		curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
+		if (curl_easy_perform(curl) == CURLE_OK)
+		{
+			return {std::move(buffer)};
+		}
+
+		return {};
+	}
+
+	std::future<std::optional<std::string>> get_data_async(const std::string& url, const headers& headers)
+	{
+		return std::async(std::launch::async, [url, headers]()
+		{
+			return get_data(url, headers);
+		});
+	}
+}

src/utils/http.hpp

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <string>
+#include <optional>
+#include <future>
+#include <unordered_map>
+
+namespace utils::http
+{
+	using headers = std::unordered_map<std::string, std::string>;
+
+	std::optional<std::string> get_data(const std::string& url, const headers& headers = {});
+	std::future<std::optional<std::string>> get_data_async(const std::string& url, const headers& headers = {});
+}

src/utils/info_string.cpp

@@ -0,0 +1,67 @@
+#include <std_include.hpp>
+
+#include "info_string.hpp"
+#include "string.hpp"
+
+namespace utils
+{
+	info_string::info_string(const std::string& buffer)
+	{
+		this->parse(buffer);
+	}
+
+	info_string::info_string(const std::string_view& buffer)
+		: info_string(std::string{buffer})
+	{
+	}
+
+	void info_string::set(const std::string& key, const std::string& value)
+	{
+		this->key_value_pairs_[key] = value;
+	}
+
+	std::string info_string::get(const std::string& key) const
+	{
+		const auto value = this->key_value_pairs_.find(key);
+		if (value != this->key_value_pairs_.end())
+		{
+			return value->second;
+		}
+
+		return {};
+	}
+
+	void info_string::parse(std::string buffer)
+	{
+		if (buffer[0] == '\\')
+		{
+			buffer = buffer.substr(1);
+		}
+
+		auto key_values = string::split(buffer, '\\');
+		for (size_t i = 0; !key_values.empty() && i < (key_values.size() - 1); i += 2)
+		{
+			const auto& key = key_values[i];
+			const auto& value = key_values[i + 1];
+			this->key_value_pairs_[key] = value;
+		}
+	}
+
+	std::string info_string::build() const
+	{
+		//auto first = true;
+		std::string info_string;
+		for (auto i = this->key_value_pairs_.begin(); i != this->key_value_pairs_.end(); ++i)
+		{
+			//if (first) first = false;
+			/*else*/
+			info_string.append("\\");
+
+			info_string.append(i->first); // Key
+			info_string.append("\\");
+			info_string.append(i->second); // Value
+		}
+
+		return info_string;
+	}
+}

src/utils/info_string.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <string>
+#include <unordered_map>
+
+namespace utils
+{
+	class info_string
+	{
+	public:
+		info_string() = default;
+		info_string(const std::string& buffer);
+		info_string(const std::string_view& buffer);
+
+		void set(const std::string& key, const std::string& value);
+		std::string get(const std::string& key) const;
+		std::string build() const;
+
+	private:
+		std::unordered_map<std::string, std::string> key_value_pairs_{};
+
+		void parse(std::string buffer);
+	};
+}

src/utils/io.cpp

@@ -0,0 +1,132 @@
+#include <std_include.hpp>
+
+#include "io.hpp"
+#include <fstream>
+#include <ios>
+
+namespace utils::io
+{
+	bool remove_file(const std::string& file)
+	{
+		return remove(file.data()) == 0;
+	}
+
+	bool move_file(const std::string& src, const std::string& target)
+	{
+		return rename(src.data(), target.data()) == 0;
+	}
+
+	bool file_exists(const std::string& file)
+	{
+		return std::ifstream(file).good();
+	}
+
+	bool write_file(const std::string& file, const std::string& data, const bool append)
+	{
+		const auto pos = file.find_last_of("/\\");
+		if (pos != std::string::npos)
+		{
+			create_directory(file.substr(0, pos));
+		}
+
+		auto mode = std::ios::binary | std::ofstream::out;
+		if (append)
+		{
+			mode |= std::ofstream::app;
+		}
+
+		std::ofstream stream(file, mode);
+
+		if (stream.is_open())
+		{
+			stream.write(data.data(), data.size());
+			stream.close();
+			return true;
+		}
+
+		return false;
+	}
+
+	std::string read_file(const std::string& file)
+	{
+		std::string data;
+		read_file(file, &data);
+		return data;
+	}
+
+	bool read_file(const std::string& file, std::string* data)
+	{
+		if (!data) return false;
+		data->clear();
+
+		if (file_exists(file))
+		{
+			std::ifstream stream(file, std::ios::binary);
+			if (!stream.is_open()) return false;
+
+			stream.seekg(0, std::ios::end);
+			const std::streamsize size = stream.tellg();
+			stream.seekg(0, std::ios::beg);
+
+			if (size > -1)
+			{
+				data->resize(static_cast<uint32_t>(size));
+				stream.read(const_cast<char*>(data->data()), size);
+				stream.close();
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	size_t file_size(const std::string& file)
+	{
+		if (file_exists(file))
+		{
+			std::ifstream stream(file, std::ios::binary);
+
+			if (stream.good())
+			{
+				stream.seekg(0, std::ios::end);
+				return static_cast<size_t>(stream.tellg());
+			}
+		}
+
+		return 0;
+	}
+
+	bool create_directory(const std::string& directory)
+	{
+		return std::filesystem::create_directories(directory);
+	}
+
+	bool directory_exists(const std::string& directory)
+	{
+		return std::filesystem::is_directory(directory);
+	}
+
+	bool directory_is_empty(const std::string& directory)
+	{
+		return std::filesystem::is_empty(directory);
+	}
+
+	std::vector<std::string> list_files(const std::string& directory)
+	{
+		std::vector<std::string> files;
+
+		for (auto& file : std::filesystem::directory_iterator(directory))
+		{
+			files.push_back(file.path().generic_string());
+		}
+
+		return files;
+	}
+
+	void copy_folder(const std::filesystem::path& src, const std::filesystem::path& target)
+	{
+		std::filesystem::copy(src, target,
+		                      std::filesystem::copy_options::overwrite_existing |
+		                      std::filesystem::copy_options::recursive);
+	}
+}

src/utils/io.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include <filesystem>
+
+namespace utils::io
+{
+	bool remove_file(const std::string& file);
+	bool move_file(const std::string& src, const std::string& target);
+	bool file_exists(const std::string& file);
+	bool write_file(const std::string& file, const std::string& data, bool append = false);
+	bool read_file(const std::string& file, std::string* data);
+	std::string read_file(const std::string& file);
+	size_t file_size(const std::string& file);
+	bool create_directory(const std::string& directory);
+	bool directory_exists(const std::string& directory);
+	bool directory_is_empty(const std::string& directory);
+	std::vector<std::string> list_files(const std::string& directory);
+	void copy_folder(const std::filesystem::path& src, const std::filesystem::path& target);
+}

src/utils/memory.cpp

@@ -0,0 +1,107 @@
+#include <std_include.hpp>
+
+#include "memory.hpp"
+
+namespace utils
+{
+	memory::allocator memory::mem_allocator_;
+
+	memory::allocator::~allocator()
+	{
+		this->clear();
+	}
+
+	void memory::allocator::clear()
+	{
+		std::lock_guard _(this->mutex_);
+
+		for (auto& data : this->pool_)
+		{
+			memory::free(data);
+		}
+
+		this->pool_.clear();
+	}
+
+	void memory::allocator::free(void* data)
+	{
+		std::lock_guard _(this->mutex_);
+
+		const auto j = std::find(this->pool_.begin(), this->pool_.end(), data);
+		if (j != this->pool_.end())
+		{
+			memory::free(data);
+			this->pool_.erase(j);
+		}
+	}
+
+	void memory::allocator::free(const void* data)
+	{
+		this->free(const_cast<void*>(data));
+	}
+
+	void* memory::allocator::allocate(const size_t length)
+	{
+		std::lock_guard _(this->mutex_);
+
+		const auto data = memory::allocate(length);
+		this->pool_.push_back(data);
+		return data;
+	}
+
+	bool memory::allocator::empty() const
+	{
+		return this->pool_.empty();
+	}
+
+	char* memory::allocator::duplicate_string(const std::string& string)
+	{
+		std::lock_guard _(this->mutex_);
+
+		const auto data = memory::duplicate_string(string);
+		this->pool_.push_back(data);
+		return data;
+	}
+
+	void* memory::allocate(const size_t length)
+	{
+		return ::calloc(length, 1);
+	}
+
+	char* memory::duplicate_string(const std::string& string)
+	{
+		const auto new_string = allocate_array<char>(string.size() + 1);
+		std::memcpy(new_string, string.data(), string.size());
+		return new_string;
+	}
+
+	void memory::free(void* data)
+	{
+		::free(data);
+	}
+
+	void memory::free(const void* data)
+	{
+		free(const_cast<void*>(data));
+	}
+
+	bool memory::is_set(const void* mem, const char chr, const size_t length)
+	{
+		auto* const mem_arr = static_cast<const char*>(mem);
+
+		for (size_t i = 0; i < length; ++i)
+		{
+			if (mem_arr[i] != chr)
+			{
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	memory::allocator* memory::get_allocator()
+	{
+		return &memory::mem_allocator_;
+	}
+}

src/utils/memory.hpp

@@ -0,0 +1,71 @@
+#pragma once
+
+#include <mutex>
+#include <vector>
+
+namespace utils
+{
+	class memory final
+	{
+	public:
+		class allocator final
+		{
+		public:
+			~allocator();
+
+			void clear();
+
+			void free(void* data);
+
+			void free(const void* data);
+
+			void* allocate(size_t length);
+
+			template <typename T>
+			inline T* allocate()
+			{
+				return this->allocate_array<T>(1);
+			}
+
+			template <typename T>
+			inline T* allocate_array(const size_t count = 1)
+			{
+				return static_cast<T*>(this->allocate(count * sizeof(T)));
+			}
+
+			bool empty() const;
+
+			char* duplicate_string(const std::string& string);
+
+		private:
+			std::mutex mutex_;
+			std::vector<void*> pool_;
+		};
+
+		static void* allocate(size_t length);
+
+		template <typename T>
+		static inline T* allocate()
+		{
+			return allocate_array<T>(1);
+		}
+
+		template <typename T>
+		static inline T* allocate_array(const size_t count = 1)
+		{
+			return static_cast<T*>(allocate(count * sizeof(T)));
+		}
+
+		static char* duplicate_string(const std::string& string);
+
+		static void free(void* data);
+		static void free(const void* data);
+
+		static bool is_set(const void* mem, char chr, size_t length);
+
+		static allocator* get_allocator();
+
+	private:
+		static allocator mem_allocator_;
+	};
+}

src/utils/parameters.cpp

@@ -0,0 +1,92 @@
+#include <std_include.hpp>
+
+#include "parameters.hpp"
+#include "string.hpp"
+
+namespace utils
+{
+	parameters::parameters(std::string buffer)
+	{
+		while (!buffer.empty() && (buffer.back() == '\0' || isspace(buffer.back())))
+		{
+			buffer.pop_back();
+		}
+
+		this->arguments_ = string::split(buffer, ' ');
+	}
+
+	parameters::parameters(const std::string_view& buffer)
+		: parameters(std::string{buffer.data(), buffer.size()})
+	{
+	}
+
+	void parameters::add(std::string value)
+	{
+		this->arguments_.emplace_back(std::move(value));
+	}
+
+	size_t parameters::size() const
+	{
+		return this->arguments_.size();
+	}
+
+	const std::string& parameters::get(const size_t index) const
+	{
+		return this->arguments_.at(index);
+	}
+
+	std::string parameters::join(const size_t index, const std::string& separator) const
+	{
+		std::string buffer{};
+
+		for (auto i = index; i < this->size(); ++i)
+		{
+			if (i != 0)
+			{
+				buffer.append(separator);
+			}
+
+			buffer.append(this->get(i));
+		}
+
+		return buffer;
+	}
+
+	const std::string& parameters::operator[](const size_t index) const
+	{
+		return this->get(index);
+	}
+
+	parameters::list_type::iterator parameters::begin()
+	{
+		return this->arguments_.begin();
+	}
+
+	parameters::list_type::const_iterator parameters::begin() const
+	{
+		return this->arguments_.begin();
+	}
+
+	parameters::list_type::iterator parameters::end()
+	{
+		return this->arguments_.end();
+	}
+
+	parameters::list_type::const_iterator parameters::end() const
+	{
+		return this->arguments_.end();
+	}
+
+	bool parameters::has(const std::string& value) const
+	{
+		for (const auto& val : this->arguments_)
+		{
+			if (val == value)
+			{
+				return true;
+			}
+		}
+
+		return false;
+	}
+}

src/utils/parameters.hpp

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <string>
+#include <unordered_map>
+
+namespace utils
+{
+	class parameters
+	{
+	public:
+		using list_type = std::vector<std::string>;
+
+		parameters() = default;
+		parameters(std::string buffer);
+		parameters(const std::string_view& buffer);
+
+		void add(std::string value);
+
+		size_t size() const;
+		std::string join(size_t index = 0, const std::string& separator = " ") const;
+
+		const std::string& operator [](size_t index) const;
+		const std::string& get(size_t index) const;
+
+		list_type::iterator begin();
+		list_type::const_iterator begin() const;
+		list_type::iterator end();
+		list_type::const_iterator end() const;
+
+		bool has(const std::string& value) const;
+
+	private:
+		list_type arguments_{};
+	};
+}

src/utils/string.cpp

@@ -0,0 +1,161 @@
+#include <std_include.hpp>
+
+#include "string.hpp"
+#include <sstream>
+#include <cstdarg>
+#include <algorithm>
+
+namespace utils::string
+{
+	const char* va(const char* fmt, ...)
+	{
+		static thread_local va_provider<8, 256> provider;
+
+		va_list ap;
+		va_start(ap, fmt);
+
+		const char* result = provider.get(fmt, ap);
+
+		va_end(ap);
+		return result;
+	}
+
+	std::vector<std::string> split(const std::string& s, const char delim)
+	{
+		std::stringstream ss(s);
+		std::string item;
+		std::vector<std::string> elems;
+
+		while (std::getline(ss, item, delim))
+		{
+			elems.push_back(std::move(item));
+			item = std::string{};
+		}
+
+		return elems;
+	}
+
+	std::string to_lower(std::string text)
+	{
+		std::transform(text.begin(), text.end(), text.begin(), [](const unsigned char input)
+		{
+			return static_cast<char>(tolower(input));
+		});
+
+		return text;
+	}
+
+	std::string to_upper(std::string text)
+	{
+		std::transform(text.begin(), text.end(), text.begin(), [](const unsigned char input)
+		{
+			return static_cast<char>(toupper(input));
+		});
+
+		return text;
+	}
+
+	bool starts_with(const std::string& text, const std::string& substring)
+	{
+		return text.find(substring) == 0;
+	}
+
+	bool ends_with(const std::string& text, const std::string& substring)
+	{
+		if (substring.size() > text.size()) return false;
+		return std::equal(substring.rbegin(), substring.rend(), text.rbegin());
+	}
+
+	std::string dump_hex(const std::string& data, const std::string& separator)
+	{
+		std::string result;
+
+		for (unsigned int i = 0; i < data.size(); ++i)
+		{
+			if (i > 0)
+			{
+				result.append(separator);
+			}
+
+			result.append(va("%02X", data[i] & 0xFF));
+		}
+
+		return result;
+	}
+
+	void strip(const char* in, char* out, int max)
+	{
+		if (!in || !out) return;
+
+		max--;
+		auto current = 0;
+		while (*in != 0 && current < max)
+		{
+			const auto color_index = (*(in + 1) - 48) >= 0xC ? 7 : (*(in + 1) - 48);
+
+			if (*in == '^' && (color_index != 7 || *(in + 1) == '7'))
+			{
+				++in;
+			}
+			else
+			{
+				*out = *in;
+				++out;
+				++current;
+			}
+
+			++in;
+		}
+		*out = '\0';
+	}
+
+#ifdef _WIN32
+#pragma warning(push)
+#pragma warning(disable: 4100)
+#endif
+	std::string convert(const std::wstring& wstr)
+	{
+		std::string result;
+		result.reserve(wstr.size());
+
+		for (const auto& chr : wstr)
+		{
+			result.push_back(static_cast<char>(chr));
+		}
+
+		return result;
+	}
+
+	std::wstring convert(const std::string& str)
+	{
+		std::wstring result;
+		result.reserve(str.size());
+
+		for (const auto& chr : str)
+		{
+			result.push_back(static_cast<wchar_t>(chr));
+		}
+
+		return result;
+	}
+#ifdef _WIN32
+#pragma warning(pop)
+#endif
+
+	std::string replace(std::string str, const std::string& from, const std::string& to)
+	{
+		if (from.empty())
+		{
+			return str;
+		}
+
+		size_t start_pos = 0;
+		while ((start_pos = str.find(from, start_pos)) != std::string::npos)
+		{
+			str.replace(start_pos, from.length(), to);
+			start_pos += to.length();
+		}
+
+		return str;
+	}
+}

src/utils/string.hpp

@@ -0,0 +1,105 @@
+#pragma once
+#include "memory.hpp"
+#include <cstdint>
+
+#ifndef ARRAYSIZE
+template <class Type, size_t n>
+size_t ARRAYSIZE(Type (&)[n]) { return n; }
+#endif
+
+namespace utils::string
+{
+	template <size_t Buffers, size_t MinBufferSize>
+	class va_provider final
+	{
+	public:
+		static_assert(Buffers != 0 && MinBufferSize != 0, "Buffers and MinBufferSize mustn't be 0");
+
+		va_provider() : current_buffer_(0)
+		{
+		}
+
+		char* get(const char* format, va_list ap)
+		{
+			++this->current_buffer_ %= ARRAYSIZE(this->string_pool_);
+			auto entry = &this->string_pool_[this->current_buffer_];
+
+			if (!entry->size || !entry->buffer)
+			{
+				throw std::runtime_error("String pool not initialized");
+			}
+
+			while (true)
+			{
+#ifdef _WIN32
+				const int res = vsnprintf_s(entry->buffer, entry->size, _TRUNCATE, format, ap);
+#else
+				const int res = vsnprintf(entry->buffer, entry->size, format, ap);
+#endif
+
+				if (res > 0) break; // Success
+				if (res == 0) return nullptr; // Error
+
+				entry->double_size();
+			}
+
+			return entry->buffer;
+		}
+
+	private:
+		class entry final
+		{
+		public:
+			explicit entry(const size_t _size = MinBufferSize) : size(_size), buffer(nullptr)
+			{
+				if (this->size < MinBufferSize) this->size = MinBufferSize;
+				this->allocate();
+			}
+
+			~entry()
+			{
+				if (this->buffer) memory::get_allocator()->free(this->buffer);
+				this->size = 0;
+				this->buffer = nullptr;
+			}
+
+			void allocate()
+			{
+				if (this->buffer) memory::get_allocator()->free(this->buffer);
+				this->buffer = memory::get_allocator()->allocate_array<char>(this->size + 1);
+			}
+
+			void double_size()
+			{
+				this->size *= 2;
+				this->allocate();
+			}
+
+			size_t size;
+			char* buffer;
+		};
+
+		size_t current_buffer_;
+		entry string_pool_[Buffers];
+	};
+
+	const char* va(const char* fmt, ...);
+
+	std::vector<std::string> split(const std::string& s, char delim);
+	std::vector<std::string> split(const std::string_view& s, char delim);
+
+	std::string to_lower(std::string text);
+	std::string to_upper(std::string text);
+
+	bool starts_with(const std::string& text, const std::string& substring);
+	bool ends_with(const std::string& text, const std::string& substring);
+
+	std::string dump_hex(const std::string& data, const std::string& separator = " ");
+
+	void strip(const char* in, char* out, int max);
+
+	std::string convert(const std::wstring& wstr);
+	std::wstring convert(const std::string& str);
+
+	std::string replace(std::string str, const std::string& from, const std::string& to);
+}