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| 1 | <?php declare(strict_types=1); |
| 2 | |
| 3 | /** |
| 4 | * Clansuite Server Query |
| 5 | * |
| 6 | * SPDX-FileCopyrightText: 2003-2025 Jens A. Koch |
| 7 | * SPDX-License-Identifier: MIT |
| 8 | * |
| 9 | * For the full copyright and license information, please view |
| 10 | * the LICENSE file that was distributed with this source code. |
| 11 | */ |
| 12 | |
| 13 | namespace Clansuite\ServerQuery\ServerProtocols; |
| 14 | |
| 15 | use function count; |
| 16 | use function pack; |
| 17 | use function preg_match; |
| 18 | use function strlen; |
| 19 | use function substr; |
| 20 | use Clansuite\Capture\Protocol\ProtocolInterface; |
| 21 | use Clansuite\Capture\ServerAddress; |
| 22 | use Clansuite\Capture\ServerInfo; |
| 23 | use Clansuite\ServerQuery\CSQuery; |
| 24 | use Override; |
| 25 | |
| 26 | /** |
| 27 | * DDnet protocol implementation. |
| 28 | * |
| 29 | * Based on Teeworlds protocol. |
| 30 | * |
| 31 | * Server: https://ddnet.org/status/#server-0 |
| 32 | * |
| 33 | * Official website: https://ddnet.org |
| 34 | * Protocol: https://ddnet.org/docs/libtw2/protocol/ |
| 35 | * Packet: https://ddnet.org/docs/libtw2/packet/ |
| 36 | * Connection: https://ddnet.org/docs/libtw2/connection/ |
| 37 | */ |
| 38 | class Ddnet extends CSQuery implements ProtocolInterface |
| 39 | { |
| 40 | /** |
| 41 | * Protocol name. |
| 42 | */ |
| 43 | public string $name = 'DDnet'; |
| 44 | |
| 45 | /** |
| 46 | * List of supported games. |
| 47 | * |
| 48 | * @var array<string> |
| 49 | */ |
| 50 | public array $supportedGames = ['DDnet']; |
| 51 | |
| 52 | /** |
| 53 | * Protocol identifier. |
| 54 | */ |
| 55 | public string $protocol = 'ddnet'; |
| 56 | |
| 57 | /** |
| 58 | * Game series. |
| 59 | * |
| 60 | * @var array<string> |
| 61 | */ |
| 62 | public array $game_series_list = ['Teeworlds']; |
| 63 | public string $gameport = '8303'; |
| 64 | |
| 65 | /** |
| 66 | * Constructor. |
| 67 | */ |
| 68 | public function __construct(?string $address = null, ?int $queryport = null) |
| 69 | { |
| 70 | parent::__construct($address, $queryport); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * getServerLink method. |
| 75 | */ |
| 76 | public function getServerLink(): string |
| 77 | { |
| 78 | return 'ddnet://' . $this->address . ':' . $this->gameport; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * query_server method. |
| 83 | */ |
| 84 | #[Override] |
| 85 | public function query_server(bool $getPlayers = true, bool $getRules = true): bool |
| 86 | { |
| 87 | if ($this->online) { |
| 88 | $this->reset(); |
| 89 | } |
| 90 | |
| 91 | // Try extended server info first (DDnet specific) |
| 92 | $command = $this->buildExtendedQueryPacket(); |
| 93 | |
| 94 | if (($result = $this->sendCommand($this->address ?? '', $this->queryport ?? 0, $command)) === '' || ($result = $this->sendCommand($this->address ?? '', $this->queryport ?? 0, $command)) === '0' || ($result = $this->sendCommand($this->address ?? '', $this->queryport ?? 0, $command)) === false) { |
| 95 | // Fall back to vanilla Teeworlds query |
| 96 | $command = "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x67\x69\x65\x33\x05"; |
| 97 | $result = $this->sendCommand($this->address ?? '', $this->queryport ?? 0, $command); |
| 98 | } |
| 99 | |
| 100 | if ($result === '' || $result === '0' || $result === false) { |
| 101 | $this->errstr = 'No response from server'; |
| 102 | |
| 103 | return false; |
| 104 | } |
| 105 | |
| 106 | $this->hostport = $this->queryport ?? 0; |
| 107 | |
| 108 | // Parse the response |
| 109 | return $this->parseResponse($result); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * getProtocolName method. |
| 114 | */ |
| 115 | #[Override] |
| 116 | public function getProtocolName(): string |
| 117 | { |
| 118 | return 'ddnet'; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * getVersion method. |
| 123 | */ |
| 124 | #[Override] |
| 125 | public function getVersion(ServerInfo $info): string |
| 126 | { |
| 127 | return (string) ($info->rules['version'] ?? 'unknown'); |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * getQueryString method. |
| 132 | */ |
| 133 | public function getQueryString(ServerAddress $address): string |
| 134 | { |
| 135 | return "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x67\x69\x65\x33\x05"; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * parseResponseData method. |
| 140 | */ |
| 141 | public function parseResponseData(string $data): ServerInfo |
| 142 | { |
| 143 | $serverInfo = new ServerInfo; |
| 144 | |
| 145 | $len = strlen($data); |
| 146 | |
| 147 | if ($len < 15) { |
| 148 | return $serverInfo; |
| 149 | } |
| 150 | |
| 151 | // Check for extended response |
| 152 | if (substr($data, 10, 4) === 'iext') { |
| 153 | return $this->parseExtendedResponseData($data); |
| 154 | } |
| 155 | |
| 156 | // Check for vanilla response |
| 157 | if (substr($data, 10, 5) === 'inf35') { |
| 158 | return $this->parseVanillaResponseData($data); |
| 159 | } |
| 160 | |
| 161 | return $serverInfo; |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * query method. |
| 166 | */ |
| 167 | #[Override] |
| 168 | public function query(ServerAddress $addr): ServerInfo |
| 169 | { |
| 170 | // Try extended query first |
| 171 | $queryString = $this->buildExtendedQueryPacket(); |
| 172 | $response = $this->sendCommand($addr->ip, $addr->port, $queryString); |
| 173 | |
| 174 | if ($response === '' || $response === '0' || $response === false) { |
| 175 | // Fall back to vanilla query |
| 176 | $queryString = "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x67\x69\x65\x33\x05"; |
| 177 | $response = $this->sendCommand($addr->ip, $addr->port, $queryString); |
| 178 | } |
| 179 | |
| 180 | if ($response === '' || $response === '0' || $response === false) { |
| 181 | return new ServerInfo; |
| 182 | } |
| 183 | |
| 184 | return $this->parseResponseData($response); |
| 185 | } |
| 186 | |
| 187 | private function buildExtendedQueryPacket(): string |
| 188 | { |
| 189 | // Extended server info request format: |
| 190 | // Connectionless header + extended request |
| 191 | $packet = "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"; // connectionless header |
| 192 | |
| 193 | $packet .= 'xe'; // magic_bytes |
| 194 | $packet .= pack('n', 0); // extra_token (big-endian 16-bit) |
| 195 | $packet .= pack('n', 0); // reserved |
| 196 | $packet .= "\xff\xff\xff\xff"; // padding |
| 197 | $packet .= 'gie3'; // vanilla_request |
| 198 | $packet .= "\x00"; // token |
| 199 | |
| 200 | return $packet; |
| 201 | } |
| 202 | |
| 203 | private function parseResponse(string $result): bool |
| 204 | { |
| 205 | $len = strlen($result); |
| 206 | |
| 207 | if ($len < 15) { |
| 208 | $this->errstr = 'Invalid response (too short)'; |
| 209 | |
| 210 | return false; |
| 211 | } |
| 212 | |
| 213 | // Check for extended response (starts with "iext") |
| 214 | if (substr($result, 10, 4) === 'iext') { |
| 215 | return $this->parseExtendedResponse($result); |
| 216 | } |
| 217 | |
| 218 | // Check for vanilla response (starts with "inf35") |
| 219 | if (substr($result, 10, 5) === 'inf35') { |
| 220 | return $this->parseVanillaResponse($result); |
| 221 | } |
| 222 | |
| 223 | $this->errstr = 'Unknown response format'; |
| 224 | |
| 225 | return false; |
| 226 | } |
| 227 | |
| 228 | private function parseVanillaResponse(string $result): bool |
| 229 | { |
| 230 | $len = strlen($result); |
| 231 | |
| 232 | // Check header |
| 233 | $header = substr($result, 0, 15); |
| 234 | |
| 235 | if ($header !== "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xffinf35") { |
| 236 | $this->errstr = 'Invalid vanilla response header'; |
| 237 | |
| 238 | return false; |
| 239 | } |
| 240 | |
| 241 | $i = 15; // start after header |
| 242 | |
| 243 | // Version |
| 244 | $this->rules['version'] = $this->readString($result, $i); |
| 245 | |
| 246 | // Hostname |
| 247 | $this->servertitle = $this->readString($result, $i); |
| 248 | |
| 249 | // Map |
| 250 | $this->mapname = $this->readString($result, $i); |
| 251 | |
| 252 | // Game description (string) and game directory (string) |
| 253 | $this->rules['game_descr'] = $this->readString($result, $i); |
| 254 | $this->rules['gamedir'] = $this->readString($result, $i); |
| 255 | |
| 256 | // Flags (string) |
| 257 | $this->rules['flags'] = $this->readString($result, $i); |
| 258 | |
| 259 | // Player count |
| 260 | $this->numplayers = (int) $this->readString($result, $i); |
| 261 | |
| 262 | // Max players |
| 263 | $this->maxplayers = (int) $this->readString($result, $i); |
| 264 | |
| 265 | // Num players total |
| 266 | $this->rules['num_players_total'] = (int) $this->readString($result, $i); |
| 267 | |
| 268 | // Max players total |
| 269 | $this->rules['maxplayers_total'] = (int) $this->readString($result, $i); |
| 270 | |
| 271 | // Players |
| 272 | $this->players = []; |
| 273 | |
| 274 | while ($i < $len) { |
| 275 | $player = []; |
| 276 | |
| 277 | // Vanilla Teeworlds player format (as used by many parsers): |
| 278 | // name (str), clan (str), flag/country (str), score (str), team (str) |
| 279 | $player['name'] = $this->readString($result, $i); |
| 280 | $player['clan'] = $this->readString($result, $i); |
| 281 | $player['country'] = $this->readString($result, $i); |
| 282 | $player['score'] = $this->readString($result, $i); |
| 283 | $player['team'] = $this->readString($result, $i); |
| 284 | |
| 285 | $this->players[] = $player; |
| 286 | } |
| 287 | $this->numplayers = count($this->players); |
| 288 | |
| 289 | // Try to parse maxplayers from map name like [num/max] |
| 290 | if (preg_match('/\[(\d+)\/(\d+)\]$/', $this->mapname, $matches) !== false && isset($matches[2])) { |
| 291 | $this->maxplayers = (int) $matches[2]; |
| 292 | } |
| 293 | |
| 294 | $this->online = true; |
| 295 | |
| 296 | return true; |
| 297 | } |
| 298 | |
| 299 | private function parseExtendedResponse(string $result): bool |
| 300 | { |
| 301 | $len = strlen($result); |
| 302 | |
| 303 | // Check header (10 padding + "iext") |
| 304 | $header = substr($result, 0, 14); |
| 305 | |
| 306 | if ($header !== "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xffiext") { |
| 307 | $this->errstr = 'Invalid extended response header'; |
| 308 | |
| 309 | return false; |
| 310 | } |
| 311 | |
| 312 | $i = 14; // start after header |
| 313 | |
| 314 | // Token (int) |
| 315 | $this->readInt($result, $i); |
| 316 | |
| 317 | // Version |
| 318 | $this->rules['version'] = $this->readString($result, $i); |
| 319 | |
| 320 | // Name |
| 321 | $this->servertitle = $this->readString($result, $i); |
| 322 | |
| 323 | // Map |
| 324 | $this->mapname = $this->readString($result, $i); |
| 325 | |
| 326 | // Map CRC (int) |
| 327 | $this->rules['map_crc'] = $this->readInt($result, $i); |
| 328 | |
| 329 | // Map size (int) |
| 330 | $this->rules['map_size'] = $this->readInt($result, $i); |
| 331 | |
| 332 | // Game type |
| 333 | $this->rules['gametype'] = $this->readString($result, $i); |
| 334 | |
| 335 | // Flags (int) |
| 336 | $this->rules['flags'] = $this->readInt($result, $i); |
| 337 | |
| 338 | // Num players (int) |
| 339 | $this->numplayers = $this->readInt($result, $i); |
| 340 | |
| 341 | // Max players (int) |
| 342 | $this->maxplayers = $this->readInt($result, $i); |
| 343 | |
| 344 | // Num clients (int) |
| 345 | $this->rules['num_clients'] = $this->readInt($result, $i); |
| 346 | |
| 347 | // Max clients (int) |
| 348 | $this->rules['max_clients'] = $this->readInt($result, $i); |
| 349 | |
| 350 | // Reserved (string, should be empty) |
| 351 | $this->readString($result, $i); |
| 352 | |
| 353 | // Players |
| 354 | while ($i < $len) { |
| 355 | $player = []; |
| 356 | |
| 357 | $player['name'] = $this->readString($result, $i); |
| 358 | $player['clan'] = $this->readString($result, $i); |
| 359 | $player['country'] = $this->readInt($result, $i); |
| 360 | $player['score'] = $this->readInt($result, $i); |
| 361 | $player['is_player'] = $this->readInt($result, $i); |
| 362 | // Reserved |
| 363 | $this->readString($result, $i); |
| 364 | |
| 365 | $this->players[] = $player; |
| 366 | } |
| 367 | |
| 368 | $this->online = true; |
| 369 | |
| 370 | return true; |
| 371 | } |
| 372 | |
| 373 | private function readInt(string $data, int &$i): int |
| 374 | { |
| 375 | // According to the DDNet / Teeworlds protocol, "int" is encoded as |
| 376 | // a decimal ASCII string terminated by a null byte. So read it as a |
| 377 | // null-terminated string and cast to int. |
| 378 | $str = $this->readString($data, $i); |
| 379 | |
| 380 | return (int) $str; |
| 381 | } |
| 382 | |
| 383 | private function readString(string $data, int &$i): string |
| 384 | { |
| 385 | $start = $i; |
| 386 | |
| 387 | while ($i < strlen($data) && $data[$i] !== "\x00") { |
| 388 | $i++; |
| 389 | } |
| 390 | $string = substr($data, $start, $i - $start); |
| 391 | $i++; // skip null terminator |
| 392 | |
| 393 | return $string; |
| 394 | } |
| 395 | |
| 396 | private function parseVanillaResponseData(string $data): ServerInfo |
| 397 | { |
| 398 | $serverInfo = new ServerInfo; |
| 399 | $len = strlen($data); |
| 400 | |
| 401 | $header = substr($data, 0, 15); |
| 402 | |
| 403 | if ($header !== "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xffinf35") { |
| 404 | return $serverInfo; |
| 405 | } |
| 406 | |
| 407 | $i = 15; |
| 408 | |
| 409 | $serverInfo->rules['version'] = $this->readString($data, $i); |
| 410 | $serverInfo->servertitle = $this->readString($data, $i); |
| 411 | $serverInfo->mapname = $this->readString($data, $i); |
| 412 | // Game description and game directory |
| 413 | $serverInfo->rules['game_descr'] = $this->readString($data, $i); |
| 414 | $serverInfo->rules['gamedir'] = $this->readString($data, $i); |
| 415 | $serverInfo->rules['flags'] = $this->readString($data, $i); |
| 416 | $serverInfo->numplayers = (int) $this->readString($data, $i); |
| 417 | $serverInfo->maxplayers = (int) $this->readString($data, $i); |
| 418 | $serverInfo->rules['num_players_total'] = (int) $this->readString($data, $i); |
| 419 | $serverInfo->rules['maxplayers_total'] = (int) $this->readString($data, $i); |
| 420 | |
| 421 | while ($i < $len) { |
| 422 | $player = []; |
| 423 | |
| 424 | // Vanilla Teeworlds player format: name, clan, flag/country, score, team |
| 425 | $player['name'] = $this->readString($data, $i); |
| 426 | $player['clan'] = $this->readString($data, $i); |
| 427 | $player['country'] = $this->readString($data, $i); |
| 428 | $player['score'] = $this->readString($data, $i); |
| 429 | $player['team'] = $this->readString($data, $i); |
| 430 | // Vanilla responses do not include is_player flag; assume true |
| 431 | $player['is_player'] = 1; |
| 432 | |
| 433 | $serverInfo->players[] = $player; |
| 434 | } |
| 435 | |
| 436 | $serverInfo->online = true; |
| 437 | |
| 438 | return $serverInfo; |
| 439 | } |
| 440 | |
| 441 | private function parseExtendedResponseData(string $data): ServerInfo |
| 442 | { |
| 443 | $serverInfo = new ServerInfo; |
| 444 | $len = strlen($data); |
| 445 | |
| 446 | $header = substr($data, 0, 14); |
| 447 | |
| 448 | if ($header !== "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xffiext") { |
| 449 | return $serverInfo; |
| 450 | } |
| 451 | |
| 452 | $i = 14; |
| 453 | |
| 454 | $this->readInt($data, $i); |
| 455 | $serverInfo->rules['version'] = $this->readString($data, $i); |
| 456 | $serverInfo->servertitle = $this->readString($data, $i); |
| 457 | $serverInfo->mapname = $this->readString($data, $i); |
| 458 | $serverInfo->rules['map_crc'] = $this->readInt($data, $i); |
| 459 | $serverInfo->rules['map_size'] = $this->readInt($data, $i); |
| 460 | $serverInfo->rules['gametype'] = $this->readString($data, $i); |
| 461 | $serverInfo->rules['flags'] = $this->readInt($data, $i); |
| 462 | $serverInfo->numplayers = $this->readInt($data, $i); |
| 463 | $serverInfo->maxplayers = $this->readInt($data, $i); |
| 464 | $serverInfo->rules['num_clients'] = $this->readInt($data, $i); |
| 465 | $serverInfo->rules['max_clients'] = $this->readInt($data, $i); |
| 466 | $this->readString($data, $i); // reserved |
| 467 | |
| 468 | while ($i < $len) { |
| 469 | $player = []; |
| 470 | $player['name'] = $this->readString($data, $i); |
| 471 | $player['clan'] = $this->readString($data, $i); |
| 472 | $player['country'] = $this->readInt($data, $i); |
| 473 | $player['score'] = $this->readInt($data, $i); |
| 474 | $player['is_player'] = $this->readInt($data, $i); |
| 475 | $this->readString($data, $i); // reserved |
| 476 | |
| 477 | $serverInfo->players[] = $player; |
| 478 | } |
| 479 | |
| 480 | $serverInfo->online = true; |
| 481 | |
| 482 | return $serverInfo; |
| 483 | } |
| 484 | } |