├── .gitignore ├── LICENSE ├── README.md ├── images └── example1.jpg ├── include └── config_edit_me.h ├── lib └── minecraft │ ├── minecraft.cpp │ └── minecraft.h ├── platformio.ini └── src └── simple_client └── simple_client.cpp /.gitignore: -------------------------------------------------------------------------------- 1 | .pio 2 | .vscode 3 | config.h 4 | nik_config.h 5 | .vscode-ctags 6 | src/trader_bot -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # esp32-minecraft-client 2 | this is an esp32 based minecraft client! 3 | 4 | # INFO 5 | - the currently supported version is 1.16.5 (protocol version 754) 6 | - it may sometimes crash due to the esp32 being quite slow when parsing packets 7 | - this only works for online-mode-off servers 8 | - chunks are completely ignored since parsing chunks implies decompressing quite big frames of data and esp32 is already struggling by just receiving them 9 | 10 | # HOW TO USE 11 | rename include/config_edit_me.h to config.h and edit it with your own data, compile, upload using platformio and enjoy! 12 | It should start writing debug info on the serial port and join the server 13 | 14 | # SAMPLES 15 | ![alt text](https://github.com/nikisalli/esp32-minecraft-client/raw/master/images/example1.jpg) 16 | -------------------------------------------------------------------------------- /images/example1.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nikisalli/esp32-minecraft-client/96e0b1050ae6153e44ea598593945229adffebbf/images/example1.jpg -------------------------------------------------------------------------------- /include/config_edit_me.h: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | String username = "nickname"; 4 | String server_url = "ip"; 5 | int server_port = 25565; 6 | 7 | const char* ssid = "ssid"; 8 | const char* password = "pass"; -------------------------------------------------------------------------------- /lib/minecraft/minecraft.cpp: -------------------------------------------------------------------------------- 1 | #include "minecraft.h" 2 | #include 3 | 4 | // PACKET 5 | void packet::write(uint8_t val){ 6 | buffer[index] = val; 7 | index ++; 8 | } 9 | 10 | void packet::write(uint8_t * buf, size_t size){ 11 | memcpy(buffer + index, std::move(buf), size); 12 | index += size; 13 | } 14 | 15 | void packet::serverWriteVarInt(int32_t value){ 16 | do { 17 | uint8_t temp = (uint8_t)(value & 0b01111111); 18 | value = lsr(value,7); 19 | if (value != 0) { 20 | temp |= 0b10000000; 21 | } 22 | S->write(temp); 23 | } while (value != 0); 24 | } 25 | 26 | void packet::writePacket(){ 27 | (*mtx).lock(); 28 | if(compression_enabled){ // TODO 29 | serverWriteVarInt(index + 1); 30 | serverWriteVarInt(0); 31 | } else { 32 | serverWriteVarInt(index); 33 | } 34 | S->write(buffer, index); 35 | (*mtx).unlock(); 36 | } 37 | 38 | // MINECRAFT 39 | minecraft::minecraft(String _username, String _url, uint16_t _port, Stream* __S){ 40 | username = _username; 41 | server_url = _url; 42 | server_port = _port; 43 | S = __S; 44 | mtx = new std::mutex(); 45 | } 46 | 47 | // CLIENTBOUND 48 | void minecraft::readSpawnPlayer(){ 49 | int id = readVarInt(); 50 | readUUID(); 51 | double px = readDouble(); 52 | double py = readDouble(); 53 | double pz = readDouble(); 54 | uint8_t yaw = readByte(); 55 | uint8_t pitch = readByte(); 56 | 57 | login("player id:" + String(id) + " found at X: " + String(px) + " Y: " + String(py) + " Z: " + String(pz)); 58 | } 59 | 60 | void minecraft::readFoodAndSat(){ 61 | health = readFloat(); 62 | food = readVarInt(); 63 | food_sat = readFloat(); 64 | login("player stats health: " + String(health) + " food: " + String(food) + " food_sat: " + String(food_sat)); 65 | } 66 | 67 | void minecraft::readPlayerPosAndLook(){ 68 | x = readDouble(); 69 | y = readDouble(); 70 | z = readDouble(); 71 | yaw = readFloat(); 72 | pitch = readFloat(); 73 | uint8_t flags = readByte(); 74 | id = readVarInt(); 75 | 76 | login("player pos and look X: " + String(x) 77 | + " Y: " + String(y) 78 | + " Z: " + String(z) 79 | + " yaw: " + String(yaw) 80 | + " pitch: " + String(pitch) 81 | + " flags: " + String(flags) 82 | + " id: " + String(id)); 83 | 84 | writeTeleportConfirm(id); 85 | } 86 | 87 | void minecraft::readBlockDestroy(){ 88 | int ent_id = readVarInt(); 89 | long pos = readLong(); 90 | uint8_t stage = readByte(); 91 | login("block destroy id: " + String(ent_id) 92 | + " pos: " + String(pos) 93 | + " stage: " + String(stage)); 94 | } 95 | 96 | void minecraft::readKeepAlive(){ 97 | uint64_t num = readLong(); 98 | writeKeepAlive(num); 99 | last_keepalive = millis(); 100 | login("received keepalive"); 101 | } 102 | 103 | void minecraft::readChat(){ 104 | String chat = readString(); 105 | uint8_t pos = readByte(); 106 | uint64_t player_UUID = readUUID(); 107 | if(chat_enabled){ 108 | login("received message: " + chat + " sender type: " + String(pos)); 109 | } 110 | 111 | } 112 | 113 | void minecraft::readSetCompressionThres(){ 114 | int tres = readVarInt(); 115 | compression_treshold = tres; 116 | compression_enabled = true; 117 | loginfo("Compression treshold set to " + String(tres) + " bytes"); 118 | } 119 | 120 | void minecraft::readDisconnected(){ 121 | login("disconnected reason: " + readString()); 122 | } 123 | 124 | void minecraft::readServerDifficulty(){ 125 | uint8_t diff = readByte(); 126 | bool locked = readBool(); 127 | login("Server difficulty: " + String(diff) + " locked: " + String(locked)); 128 | } 129 | 130 | void minecraft::readHeldItem(){ 131 | held_item = readByte(); 132 | login("held item: " + String(held_item)); 133 | } 134 | 135 | void minecraft::readExperience(){ 136 | float bar = readFloat(); 137 | int level = readVarInt(); 138 | experience = readVarInt(); 139 | login("exp bar: " + String(bar) + " level: " + String(level) + " total: " + String(experience)); 140 | } 141 | 142 | void minecraft::readSpawnPoint(){ 143 | uint64_t val = readUnsignedLong(); 144 | login("world spawn point: " + String((uint32_t)(val >> 38)) + " " + 145 | String((uint32_t)(val & 0xFFF)) + " " + 146 | String((uint32_t)(val << 26 >> 38))); 147 | } 148 | 149 | void minecraft::readWindowItems(){ 150 | windowid = readByte(); 151 | uint32_t elementnum = readShort(); 152 | login("windowID: " + String(windowid) + " reading " + String(elementnum) + " window items..."); 153 | for(int i = 0; i < elementnum; i++){ 154 | slot temp = readSlot(); 155 | if(temp.present){ 156 | login(" |-window id: " + String(windowid) + 157 | " itemid: " + String(temp.id) + 158 | " count: " + String(temp.count) + 159 | " at slot: " + String(i)); 160 | 161 | } else { 162 | continue; 163 | } 164 | } 165 | } 166 | 167 | void minecraft::readSetSlot(){ 168 | readByte(); 169 | uint32_t elementnum = readShort(); 170 | slot temp = readSlot(); 171 | if(temp.present){ 172 | login("## window id: " + String(windowid) + 173 | " itemid: " + String(temp.id) + 174 | " count: " + String(temp.count) + 175 | " at slot: " + String(elementnum)); 176 | } 177 | } 178 | 179 | void minecraft::readSpawnEntity(){ 180 | if(game_state == 0){ // login success 181 | readUUID(); 182 | readString(); 183 | game_state = 1; // now the client is in play state 184 | login("login success"); 185 | } else if(game_state == 1) { // spawn entity 186 | uint32_t eid = readVarInt(); 187 | readUUID(); 188 | uint32_t etype = readVarInt(); 189 | double ex = readDouble(); 190 | double ey = readDouble(); 191 | double ez = readDouble(); 192 | readByte(); // we don't need heading 193 | readByte(); 194 | readByte(); 195 | readShort(); // we don't need velocity 196 | readShort(); 197 | readShort(); 198 | entity_map[eid] = entity{ex, ey, ez, etype}; 199 | //login("entity id: " + String(eid) + " type: " + String(etype) + 200 | // " coords: " + String(ex) + " " + String(ey) + " " + String(ez)); 201 | } 202 | } 203 | 204 | void minecraft::readDestroyEntity(){ 205 | uint32_t count = readVarInt(); 206 | while(count){ 207 | uint32_t entity_to_destroy = readVarInt(); 208 | std::map::iterator entity_map_iterator; 209 | entity_map_iterator = entity_map.find('b'); 210 | if (entity_map_iterator != entity_map.end()) 211 | entity_map.erase (entity_map_iterator); 212 | count--; 213 | //login("removed entity id: " + String(entity_to_destroy)); 214 | } 215 | } 216 | 217 | void minecraft::readTradeList(){ 218 | windowid = readVarInt(); 219 | uint8_t trade_num = readByte(); 220 | login("windowID: " + String(windowid) + " reading trade list..."); 221 | while(trade_num){ 222 | slot input = readSlot(); 223 | slot output = readSlot(); 224 | slot opt; 225 | if(readByte()){ 226 | opt = readSlot(); 227 | } 228 | bool trade_disabled = readByte(); 229 | int32_t trade_uses = readInt(); 230 | int32_t max_trade_uses = readInt(); 231 | int32_t xp = readInt(); 232 | int32_t special_price = readInt(); 233 | float price_multiplier = readFloat(); 234 | int32_t demand = readInt(); 235 | trade_num--; 236 | login(" |- input_id: " + String(input.id) + 237 | " output_id: " + String(output.id) + 238 | " used_trades: " + String(trade_uses) + "/" + String(max_trade_uses)); 239 | } 240 | uint32_t villager_level = readVarInt(); 241 | uint32_t villager_xp = readVarInt(); 242 | bool regular_villager = readByte(); 243 | bool can_restock = readByte(); 244 | loginfo("### villager_exp: " + String(villager_xp) + " villager_level: " + String(villager_level)); 245 | } 246 | 247 | void minecraft::readWindowConfirmation(){ 248 | windowid = readByte(); 249 | int16_t action_num = readShort(); 250 | bool accepted = readByte(); 251 | login("CONFIRMATION windowID: " + String(windowid) + " actionID: " + String(action_num) + " accepted: " + String(accepted)); 252 | writeWindowConfirmation(windowid, action_num, accepted); 253 | } 254 | 255 | void minecraft::readSpawnObject(){ 256 | if(game_state == 0){ // disconnect 257 | String reason = readString(); 258 | login("disconnected reason: " + reason); 259 | } else if(game_state == 1) { // spawn entity 260 | uint32_t eid = readVarInt(); 261 | readUUID(); 262 | uint32_t etype = readVarInt(); 263 | double ex = readDouble(); 264 | double ey = readDouble(); 265 | double ez = readDouble(); 266 | readByte(); // we don't need heading 267 | readByte(); 268 | readInt(); 269 | readShort(); // we don't need velocity 270 | readShort(); 271 | readShort(); 272 | entity_map[eid] = entity{ex, ey, ez, etype}; 273 | //login("object id: " + String(eid) + " type: " + String(etype) + 274 | // " coords: " + String(ex) + " " + String(ey) + " " + String(ez)); 275 | } 276 | } 277 | 278 | void minecraft::readOpenWindow(){ 279 | windowid = readVarInt(); 280 | uint32_t windowtype = readVarInt(); 281 | String title = readString(); 282 | login("opened window " + title + " id: " + String(windowid) + " type: " + String(windowtype)); 283 | } 284 | 285 | // SERVERBOUND 286 | void minecraft::writeTeleportConfirm(int id){ 287 | packet p(S, mtx, compression_enabled); 288 | p.writeVarInt(0x00); 289 | p.writeVarInt(id); 290 | p.writePacket(); 291 | } 292 | 293 | void minecraft::writeSetRotation(float yaw, float pitch, bool ground){ 294 | packet p(S, mtx, compression_enabled); 295 | p.writeVarInt(0x14); 296 | p.writeFloat(yaw); 297 | p.writeFloat(pitch); 298 | p.writeBoolean(ground?1:0); 299 | p.writePacket(); 300 | } 301 | 302 | void minecraft::writeKeepAlive(uint64_t id){ 303 | packet p(S, mtx, compression_enabled); 304 | p.writeVarInt(0x10); 305 | p.writeLong(id); 306 | p.writePacket(); 307 | logout("keepalive sent"); 308 | } 309 | 310 | void minecraft::writeRequest(){ 311 | packet p(S, mtx, compression_enabled); 312 | p.writeVarInt(0x00); 313 | p.writePacket(); 314 | } 315 | 316 | void minecraft::writePing(){ 317 | packet p(S, mtx, compression_enabled); 318 | p.writeVarInt(0x01); 319 | p.writeLong(millis()); 320 | p.writePacket(); 321 | } 322 | 323 | void minecraft::writeLoginStart(){ 324 | packet p(S, mtx, compression_enabled); 325 | p.writeVarInt(0x00); 326 | p.writeString(username); 327 | p.writePacket(); 328 | } 329 | 330 | void minecraft::writeChat(String text){ 331 | packet p(S, mtx, compression_enabled); 332 | p.writeVarInt(0x03); 333 | p.writeString(text); 334 | p.writePacket(); 335 | } 336 | 337 | void minecraft::writeHandShake(uint8_t state){ 338 | packet p(S, mtx, compression_enabled); 339 | p.writeVarInt(0x00); 340 | p.writeVarInt(754); 341 | p.writeString(server_url); 342 | p.writeUnsignedShort(server_port); 343 | p.writeVarInt(state); 344 | p.writePacket(); 345 | } 346 | 347 | void minecraft::writeClientStatus(uint8_t state){ 348 | packet p(S, mtx, compression_enabled); 349 | p.writeVarInt(0x04); 350 | p.writeVarInt(state); 351 | p.writePacket(); 352 | } 353 | 354 | void minecraft::writeInteract(uint32_t entityid, uint8_t hand, bool sneaking){ 355 | packet p(S, mtx, compression_enabled); 356 | p.writeVarInt(0x0E); 357 | p.writeVarInt(entityid); 358 | p.writeVarInt(0); 359 | p.writeVarInt(hand); 360 | p.writeBoolean(sneaking); 361 | p.writePacket(); 362 | logout("interact sent"); 363 | } 364 | 365 | void minecraft::writeInteractAt(uint32_t entityid, uint8_t hand, bool sneaking, uint32_t x, uint32_t y, uint32_t z){ 366 | packet p(S, mtx, compression_enabled); 367 | p.writeVarInt(0x0E); 368 | p.writeVarInt(entityid); 369 | p.writeVarInt(2); 370 | p.writeFloat(x); 371 | p.writeFloat(y); 372 | p.writeFloat(z); 373 | p.writeVarInt(hand); 374 | p.writeBoolean(sneaking); 375 | p.writePacket(); 376 | logout("interact at sent"); 377 | } 378 | 379 | void minecraft::writeAttack(uint32_t entityid, uint8_t hand, bool sneaking){ 380 | packet p(S, mtx, compression_enabled); 381 | p.writeVarInt(0x0E); 382 | p.writeVarInt(entityid); 383 | p.writeVarInt(1); 384 | p.writeVarInt(hand); 385 | p.writeBoolean(sneaking); 386 | p.writePacket(); 387 | logout("attack sent"); 388 | } 389 | 390 | void minecraft::writeClickWindow(uint8_t window_id, int16_t slot_id, uint8_t button, uint8_t mode, slot item){ 391 | packet p(S, mtx, compression_enabled); 392 | p.writeVarInt(0x09); 393 | p.writeByte(window_id); 394 | p.writeShort(slot_id); 395 | p.writeByte(button); 396 | p.writeShort(action_id); 397 | p.writeVarInt(mode); 398 | p.writeSlot(item); 399 | p.writePacket(); 400 | action_id++; 401 | logout("clicked windowID: " + String(windowid) + " slot id " + String(slot_id)); 402 | } 403 | 404 | void minecraft::writeWindowConfirmation(uint8_t window_id, int16_t action_num, bool accepted){ 405 | packet p(S, mtx, compression_enabled); 406 | p.writeVarInt(0x07); 407 | p.writeByte(window_id); 408 | p.writeShort(action_num); 409 | p.writeByte(accepted); 410 | p.writePacket(); 411 | logout("windowID: " + String(window_id) + " actionID: " + String(action_num) + " confirmation sent"); 412 | } 413 | 414 | void minecraft::writeCloseWindow(){ 415 | if(windowid != 0){ 416 | packet p(S, mtx, compression_enabled); 417 | p.writeVarInt(0x0A); 418 | p.writeByte(windowid); 419 | p.writePacket(); 420 | logout("windowID: " + String(windowid) + " closed"); 421 | windowid = 0; 422 | } 423 | } 424 | 425 | void minecraft::writeUseItem(uint8_t hand){ 426 | packet p(S, mtx, compression_enabled); 427 | p.writeVarInt(0x2F); 428 | p.writeVarInt(hand); 429 | p.writePacket(); 430 | logout("used item"); 431 | } 432 | 433 | void minecraft::writePlayerBlockPlace(uint8_t hand, int64_t bx, int64_t by, int64_t bz, uint32_t face, float cx, float cy, float cz, bool inside){ 434 | packet p(S, mtx, compression_enabled); 435 | p.writeVarInt(0x2E); 436 | p.writeVarInt(hand); 437 | uint64_t kek = ((bx & 0x3FFFFFF) << 38) | ((bz & 0x3FFFFFF) << 12) | (by & 0xFFF); 438 | p.writeUnsignedLong(kek); 439 | for(int i = 0; i < 8; i++){ 440 | Serial.print((kek >> (7 - i) * 8) & 0xFF, BIN); 441 | Serial.print(" "); 442 | } 443 | Serial.println(); 444 | p.writeVarInt(face); 445 | p.writeFloat(cx); 446 | p.writeFloat(cy); 447 | p.writeFloat(cz); 448 | p.writeByte(inside); 449 | p.writePacket(); 450 | logout("block placed"); 451 | } 452 | 453 | void minecraft::writeClientSettings(uint8_t view_distance, uint8_t chat_mode, bool chat_colors, uint8_t skin_parts, uint8_t main_hand){ 454 | packet p(S, mtx, compression_enabled); 455 | p.writeVarInt(0x05); 456 | p.writeString("en_GB"); 457 | p.writeByte(view_distance); 458 | p.writeVarInt(chat_mode); 459 | p.writeByte(chat_colors); 460 | p.writeByte(skin_parts); 461 | p.writeVarInt(main_hand); 462 | p.writePacket(); 463 | logout("client settings packet"); 464 | } 465 | 466 | void minecraft::writeRequestRecipe(uint8_t window_id, String recipe, bool all){ 467 | packet p(S, mtx, compression_enabled); 468 | p.writeVarInt(0x19); 469 | p.writeByte(window_id); 470 | p.writeString(recipe); 471 | p.writeByte(all); 472 | p.writePacket(); 473 | logout("recipe sent: " + recipe); 474 | } 475 | 476 | void minecraft::writeSelectTrade(uint32_t slotid){ 477 | packet p(S, mtx, compression_enabled); 478 | p.writeVarInt(0x23); 479 | p.writeVarInt(slotid); 480 | p.writePacket(); 481 | logout("selected trade: " + String(slotid)); 482 | } 483 | 484 | // READ TYPES 485 | uint16_t minecraft::readUnsignedShort(){ 486 | while(S->available() < 2); 487 | int ret = S->read(); 488 | return (ret << 8) | S->read(); 489 | } 490 | 491 | int16_t minecraft::readShort(){ 492 | while(S->available() < 2); 493 | int ret = S->read(); 494 | return (ret << 8) | S->read(); 495 | } 496 | 497 | float minecraft::readFloat(){ 498 | char b[4] = {}; 499 | while(S->available() < 4); 500 | for(int i=3; i>=0; i--){ 501 | b[i] = S->read(); 502 | } 503 | float f = 0; 504 | memcpy(&f, b, sizeof(float)); 505 | return f; 506 | } 507 | 508 | double minecraft::readDouble(){ 509 | char b[8] = {}; 510 | while(S->available() < 8); 511 | for(int i=7; i>=0; i--){ 512 | b[i] = S->read(); 513 | } 514 | double d = 0; 515 | memcpy(&d, b, sizeof(double)); 516 | return d; 517 | } 518 | 519 | int64_t minecraft::readLong(){ 520 | char b[8] = {}; 521 | S->readBytes(b, 8); 522 | uint64_t l = ((uint64_t) b[0] << 56) 523 | | ((uint64_t) b[1] & 0xff) << 48 524 | | ((uint64_t) b[2] & 0xff) << 40 525 | | ((uint64_t) b[3] & 0xff) << 32 526 | | ((uint64_t) b[4] & 0xff) << 24 527 | | ((uint64_t) b[5] & 0xff) << 16 528 | | ((uint64_t) b[6] & 0xff) << 8 529 | | ((uint64_t) b[7] & 0xff); 530 | return l; 531 | } 532 | 533 | uint64_t minecraft::readUnsignedLong(){ 534 | char b[8] = {}; 535 | S->readBytes(b, 8); 536 | uint64_t l = ((uint64_t) b[0] << 56) 537 | | ((uint64_t) b[1] & 0xff) << 48 538 | | ((uint64_t) b[2] & 0xff) << 40 539 | | ((uint64_t) b[3] & 0xff) << 32 540 | | ((uint64_t) b[4] & 0xff) << 24 541 | | ((uint64_t) b[5] & 0xff) << 16 542 | | ((uint64_t) b[6] & 0xff) << 8 543 | | ((uint64_t) b[7] & 0xff); 544 | return l; 545 | } 546 | 547 | String minecraft::readString(){ 548 | int length = readVarInt(); 549 | String result; 550 | for(int i=0; iavailable() < 1); 552 | result.concat((char)S->read()); 553 | } 554 | return result; 555 | } 556 | 557 | int32_t minecraft::readVarInt() { 558 | int numRead = 0; 559 | int result = 0; 560 | byte read; 561 | do { 562 | while (S->available() < 1); 563 | read = S->read(); 564 | int value = (read & 0b01111111); 565 | result |= (value << (7 * numRead)); 566 | numRead++; 567 | if (numRead > 5) { 568 | logerr("VarInt too big"); 569 | } 570 | } while ((read & 0b10000000) != 0); 571 | return result; 572 | } 573 | 574 | uint8_t minecraft::readByte(){ 575 | return S->read(); 576 | } 577 | 578 | bool minecraft::readBool(){ 579 | return S->read(); 580 | } 581 | 582 | uint64_t minecraft::readUUID(){ 583 | long UUIDmsb = readLong(); 584 | long UUIDlsb = readLong(); 585 | return UUIDlsb; 586 | } 587 | 588 | void minecraft::dumpBytes(uint32_t len){ 589 | uint8_t buf[1000]; 590 | S->readBytes(buf, len); 591 | } 592 | 593 | slot minecraft::readSlot(){ 594 | slot ret; 595 | ret.present = readByte(); 596 | if(ret.present){ 597 | ret.id = readVarInt(); 598 | ret.count = readByte(); 599 | readNBT(); 600 | } 601 | return ret; 602 | } 603 | 604 | String minecraft::readNBTString(){ 605 | int length = readUnsignedShort(); 606 | String result; 607 | while(length){ 608 | while (S->available() < 1); 609 | result.concat((char)S->read()); 610 | length--; 611 | } 612 | return result; 613 | } 614 | 615 | void minecraft::readNBTCompound(){ 616 | Serial.println("COMPOUND"); 617 | uint8_t level = 1; 618 | while(level > 0){ 619 | uint8_t type = readByte(); 620 | switch(type){ 621 | case 0x00: // END nameless 622 | Serial.print("END"); 623 | level--; 624 | break; 625 | case 0x01: // BYTE 626 | Serial.print("BYTE: " + readNBTString()); 627 | readByte(); 628 | break; 629 | case 0x02: // SHORT 630 | Serial.print("SHORT: " + readNBTString()); 631 | readShort(); 632 | break; 633 | case 0x03: // INT 634 | Serial.print("INT: " + readNBTString()); 635 | readInt(); 636 | break; 637 | case 0x04: // LONG 638 | Serial.print("LONG: " + readNBTString()); 639 | readLong(); 640 | break; 641 | case 0x05: // FLOAT 642 | Serial.print("FLOAT: " + readNBTString()); 643 | readFloat(); 644 | break; 645 | case 0x06: // DOUBLE 646 | Serial.print("DOUBLE: " + readNBTString()); 647 | readDouble(); 648 | break; 649 | case 0x07:{// BYTE ARRAY 650 | Serial.print("BYTE ARRAY: " + readNBTString()); 651 | readNBTString(); 652 | uint32_t num = readInt(); // array length 653 | while(num){ 654 | readByte(); 655 | num--; 656 | } 657 | break; 658 | } 659 | case 0x08: // STRING 660 | Serial.print("STRING: " + readNBTString()); 661 | readNBTString(); 662 | break; 663 | case 0x09:{ // LIST 664 | readNBTList(); 665 | break; 666 | } 667 | case 0x0A: // COMPOUND 668 | readNBTCompound(); 669 | level++; 670 | break; 671 | case 0x0B:{ // INT ARRAY 672 | Serial.print("INT ARRAY: " + readNBTString()); 673 | uint32_t num = readInt(); // array length 674 | while(num){ 675 | readInt(); 676 | num--; 677 | } 678 | break; 679 | } 680 | case 0x0C:{ // LONG ARRAY 681 | Serial.print("LONG ARRAY: " + readNBTString()); 682 | uint32_t num = readInt(); // array length 683 | while(num){ 684 | readLong(); 685 | num--; 686 | } 687 | break; 688 | } 689 | default: 690 | Serial.print("UNSUPPORTED " + String(type, HEX)); 691 | break; 692 | } 693 | Serial.println(); 694 | } 695 | } 696 | 697 | void minecraft::readNBTList(){ 698 | Serial.print("LIST: " + readNBTString()); 699 | uint8_t ltype = readByte(); 700 | uint8_t num = readInt(); 701 | Serial.println(" type: " + String(ltype, HEX) + " len: " + String(num)); 702 | while(num){ 703 | switch(ltype){ 704 | case 0x01: /*Serial.print("BYTE");*/ readByte();break; 705 | case 0x02: /*Serial.print("SHORT");*/ readShort(); break; 706 | case 0x03: /*Serial.print("INT");*/ readInt(); break; 707 | case 0x04: /*Serial.print("LONG");*/ readLong(); break; 708 | case 0x05: /*Serial.print("FLOAT");*/ readFloat(); break; 709 | case 0x06: /*Serial.print("DOUBLE");*/ readDouble(); break; 710 | case 0x08: /*Serial.print("STRING");*/ readNBTString(); break; 711 | case 0x09: /*Serial.println("LIST");*/ readNBTList(); break; 712 | case 0x0A: /*Serial.println("COMPOUND");*/ readNBTCompound(); break; 713 | } 714 | num--; 715 | 716 | //Serial.println(); 717 | } 718 | } 719 | 720 | void minecraft::readNBT(){ 721 | //loginfo("reading NBT"); 722 | if(readByte() == 0x0A){ 723 | readNBTString(); 724 | //Serial.println("COMPOUND: " + readNBTString()); 725 | readNBTCompound(); 726 | } else { 727 | //Serial.println("END"); 728 | } 729 | 730 | } 731 | 732 | int32_t minecraft::readInt(){ 733 | char b[4] = {}; 734 | S->readBytes(b, 4); 735 | uint32_t l = ((uint32_t) b[0] << 24) 736 | | ((uint32_t) b[1] & 0xff) << 16 737 | | ((uint32_t) b[2] & 0xff) << 8 738 | | ((uint32_t) b[3] & 0xff); 739 | return l; 740 | } 741 | 742 | uint32_t minecraft::readUnsignedInt(){ 743 | char b[4] = {}; 744 | S->readBytes(b, 4); 745 | uint32_t l = ((uint32_t) b[0] << 24) 746 | | ((uint32_t) b[1] & 0xff) << 16 747 | | ((uint32_t) b[2] & 0xff) << 8 748 | | ((uint32_t) b[3] & 0xff); 749 | return l; 750 | } 751 | 752 | // WRITE TYPES 753 | void packet::writeDouble(double value){ 754 | unsigned char * p = reinterpret_cast(&value); 755 | for(int i=7; i>=0; i--){ 756 | write(p[i]); 757 | } 758 | } 759 | 760 | void packet::writeFloat(float value) { 761 | unsigned char * p = reinterpret_cast(&value); 762 | for(int i=3; i>=0; i--){ 763 | write(p[i]); 764 | } 765 | } 766 | 767 | void packet::writeVarInt(int32_t value) { 768 | do { 769 | uint8_t temp = (uint8_t)(value & 0b01111111); 770 | value = lsr(value,7); 771 | if (value != 0) { 772 | temp |= 0b10000000; 773 | } 774 | write(temp); 775 | } while (value != 0); 776 | } 777 | 778 | void packet::writeVarLong(int64_t value) { 779 | do { 780 | byte temp = (byte)(value & 0b01111111); 781 | value = lsr(value,7); 782 | if (value != 0) { 783 | temp |= 0b10000000; 784 | } 785 | write(temp); 786 | } while (value != 0); 787 | } 788 | 789 | void packet::writeString(String str){ 790 | int length = str.length(); 791 | byte buf[length + 1]; 792 | str.getBytes(buf, length + 1); 793 | writeVarInt(length); 794 | write(buf, length); 795 | /*for(int i=0; i=0; i--){ 802 | write((uint8_t)((num >> (i*8)) & 0xff)); 803 | } 804 | } 805 | 806 | void packet::writeUnsignedLong(uint64_t num){ 807 | for(int i=7; i>=0; i--){ 808 | write((uint8_t)((num >> (i*8)) & 0xff)); 809 | } 810 | } 811 | 812 | void packet::writeUnsignedShort(uint16_t num){ 813 | write((byte)((num >> 8) & 0xff)); 814 | write((byte)(num & 0xff)); 815 | } 816 | 817 | void packet::writeUnsignedByte(uint8_t num){ 818 | write(num); 819 | } 820 | 821 | void packet::writeInt(int32_t num){ 822 | write((byte)((num >> 24) & 0xff)); 823 | write((byte)((num >> 16) & 0xff)); 824 | write((byte)((num >> 8) & 0xff)); 825 | write((byte)(num & 0xff)); 826 | } 827 | 828 | void packet::writeShort(int16_t num){ 829 | write((byte)((num >> 8) & 0xff)); 830 | write((byte)(num & 0xff)); 831 | } 832 | 833 | void packet::writeByte(int8_t num){ 834 | write(num); 835 | } 836 | 837 | void packet::writeBoolean(uint8_t val){ 838 | write(val); 839 | } 840 | 841 | void packet::writeUUID(int user_id){ 842 | uint8_t b[15] = {0}; 843 | write(b, 15); 844 | write(user_id); 845 | } 846 | 847 | void packet::writeSlot(slot item){ 848 | writeByte(item.present); 849 | if(item.present){ 850 | writeVarInt(item.id); 851 | writeByte(item.count); 852 | writeByte(0); // no NBT data 853 | } 854 | } 855 | 856 | void minecraft::writeLength(uint32_t length){ 857 | do { 858 | uint8_t temp = (uint8_t)(length & 0b01111111); 859 | length = lsr(length,7); 860 | if (length != 0) { 861 | temp |= 0b10000000; 862 | } 863 | S->write(temp); 864 | } while (length != 0); 865 | } 866 | 867 | 868 | void minecraft::readCompressed(){ 869 | int pack_length = readVarInt(); 870 | int data_length = readVarInt(); 871 | if(data_length != 0){ 872 | int len = pack_length - VarIntLength(data_length); 873 | S->readBytes(buf, len); 874 | //login("compr len: " + String(pack_length) + "B data len: " + String(data_length)); 875 | } else { 876 | int id = readVarInt(); 877 | switch (id){ 878 | case 0x04: readSpawnPlayer(); break; 879 | case 0x49: readFoodAndSat(); break; 880 | case 0x34: readPlayerPosAndLook(); break; 881 | case 0x08: readBlockDestroy(); break; 882 | case 0x1F: readKeepAlive(); break; 883 | case 0x0E: readChat(); break; 884 | case 0x0D: readServerDifficulty(); break; 885 | case 0x3F: readHeldItem(); break; 886 | case 0x48: readExperience(); break; 887 | case 0x42: readSpawnPoint(); break; 888 | case 0x13: readWindowItems(); break; 889 | case 0x15: readSetSlot(); break; 890 | case 0x02: readSpawnEntity(); break; 891 | case 0x36: readDestroyEntity(); break; 892 | case 0x26: readTradeList(); break; 893 | case 0x11: readWindowConfirmation(); break; 894 | case 0x19: readDisconnected(); break; 895 | case 0x00: readSpawnObject(); break; 896 | case 0x2D: readOpenWindow(); break; 897 | default: 898 | for(auto b : blacklisted_packets){ 899 | if(id == b){ 900 | goto out; 901 | } 902 | } 903 | login("id " + String(id, HEX)); 904 | out: 905 | int len = pack_length - VarIntLength(id) - VarIntLength(data_length); 906 | S->readBytes(buf, len); 907 | break; 908 | } 909 | } 910 | } 911 | 912 | void minecraft::readUncompressed(){ 913 | int pack_length = readVarInt(); 914 | int id = readVarInt(); 915 | switch (id){ 916 | case 0x03: readSetCompressionThres(); break; 917 | case 0x00: readDisconnected(); break; 918 | default:{ 919 | //login("uncompressed pack len: " + String(pack_length) + "B id: 0x" + String(id, HEX)); 920 | for(int i=0; iread(); 922 | } 923 | break; 924 | } 925 | } 926 | } 927 | 928 | void minecraft::handle(){ 929 | packet_count++; 930 | if(compression_enabled){ 931 | readCompressed(); 932 | } else { 933 | readUncompressed(); 934 | } 935 | } 936 | 937 | // UTILITIES 938 | void minecraft::loginfo(String msg){ 939 | Serial.println( "[INFO] " + msg); 940 | } 941 | 942 | void minecraft::logerr(String msg){ 943 | Serial.println( "[ERROR] " + msg); 944 | } 945 | 946 | void minecraft::login(String msg){ 947 | Serial.println( "[INFO] <- " + msg); 948 | } 949 | 950 | void minecraft::logout(String msg){ 951 | Serial.println( "[INFO] -> " + msg); 952 | } 953 | 954 | int32_t lsr(int32_t x, uint32_t n){ 955 | return (int32_t)((uint32_t)x >> n); 956 | } 957 | 958 | uint32_t minecraft::VarIntLength(int32_t val) { 959 | if(val == 0){ 960 | return 1; 961 | } 962 | return (int)floor(log(val) / log(128)) + 1; 963 | } -------------------------------------------------------------------------------- /lib/minecraft/minecraft.h: -------------------------------------------------------------------------------- 1 | #ifndef MINECRAFT_H 2 | #define MINECRAFT_H 3 | 4 | #include 5 | #include 6 | #include 7 | //#include "rom/miniz.h" 8 | 9 | struct entity{ 10 | float x; 11 | float y; 12 | float z; 13 | int32_t type; 14 | }; 15 | 16 | struct slot{ 17 | bool present; 18 | uint32_t id; 19 | uint8_t count; 20 | }; 21 | 22 | class packet{ 23 | public: 24 | uint8_t buffer[256]; 25 | uint32_t index = 0; 26 | bool compression_enabled; 27 | Stream* S; 28 | std::mutex * mtx; 29 | 30 | packet(Stream* __S, std::mutex * _mtx, bool _compression_enabled){ 31 | S = __S; 32 | compression_enabled = _compression_enabled; 33 | mtx = _mtx; 34 | } 35 | 36 | void write(uint8_t val); 37 | void write(uint8_t * buf, size_t size); 38 | void writePacket(); 39 | 40 | // write to buf 41 | void writeDouble (double value); 42 | void writeFloat (float value); 43 | void writeVarInt (int32_t value); 44 | void writeVarLong (int64_t value); 45 | void writeString (String str); 46 | void writeUnsignedLong (uint64_t num); 47 | void writeUnsignedShort (uint16_t num); 48 | void writeUnsignedByte (uint8_t num); 49 | void writeLong (int64_t num); 50 | void writeInt (int32_t num); 51 | void writeShort (int16_t num); 52 | void writeByte (int8_t num); 53 | void writeBoolean (uint8_t val); 54 | void writeUUID (int user_id); 55 | void writeSlot (slot item); 56 | 57 | // write to server 58 | void serverWriteVarInt (int32_t value); 59 | }; 60 | 61 | class minecraft{ 62 | public: 63 | minecraft(String _username, String _url, uint16_t _port, Stream* __S); 64 | 65 | String username; 66 | String server_url; 67 | uint32_t server_port; 68 | std::mutex * mtx; 69 | Stream* S; 70 | std::map entity_map; 71 | 72 | uint8_t game_state = 0; // 0: login 1: play 73 | int id; 74 | bool compression_enabled = 0; 75 | int compression_treshold = 0; 76 | bool writing = 0; 77 | double x = 0; 78 | double y = 0; 79 | double z = 0; 80 | float yaw = 0; 81 | float pitch = 0; 82 | int yaw_i = 0; 83 | int pitch_i = 0; 84 | bool onGround = true; 85 | float health = 0; 86 | int food = 0; 87 | float food_sat = 0; 88 | uint8_t buf[50000]; 89 | uint8_t held_item = 0; 90 | uint32_t experience = 0; 91 | uint8_t windowid = 0; 92 | uint32_t packet_count = 0; 93 | bool chat_enabled = true; 94 | uint32_t last_keepalive = 0; 95 | uint32_t action_id = 0; 96 | 97 | // these won't show in logs 98 | uint8_t blacklisted_packets[29] = {0x55, 0x17, 0x30, 0x1A, 0x35, 0x32, 0x40, 0x3A, 0x27, 0x44, 99 | 0x46, 0x28, 0x56, 0x58, 0x4E, 0x36, 0x47, 0x00, 0x29, 0x0b, 100 | 0x21, 0x4B, 0x3D, 0x51, 0x3B, 0x22, 0x05, 0x1c, 0x0A}; 101 | 102 | int timeout = 100; 103 | 104 | void handle(); 105 | void readUncompressed(); 106 | void readCompressed(); 107 | 108 | // clientbound 109 | void readSpawnPlayer (); 110 | void readFoodAndSat (); 111 | void readPlayerPosAndLook (); 112 | void readBlockDestroy (); 113 | void readKeepAlive (); 114 | void readChat (); 115 | void readSetCompressionThres (); 116 | void readDisconnected (); 117 | void readServerDifficulty (); 118 | void readHeldItem (); 119 | void readExperience (); 120 | void readSpawnPoint (); 121 | void readWindowItems (); 122 | void readSetSlot (); 123 | void readSpawnEntity (); 124 | void readDestroyEntity (); 125 | void readTradeList (); 126 | void readWindowConfirmation (); 127 | void readSpawnObject (); 128 | void readOpenWindow (); 129 | 130 | // serverbound 131 | void writeHandle (); // this stream is the logging port not the web socket!! 132 | void writeTeleportConfirm (int id); 133 | void writeSetRotation (float yaw, float pitch, bool ground); 134 | void writeKeepAlive (uint64_t id); 135 | void writeRequest (); 136 | void writePing (); 137 | void writeLoginStart (); 138 | void writeChat (String text); 139 | void writeHandShake (uint8_t state); 140 | void writeClientStatus (uint8_t state); 141 | void writeInteract (uint32_t entityid, uint8_t hand, bool sneaking); 142 | void writeInteractAt (uint32_t entityid, uint8_t hand, bool sneaking, uint32_t x, uint32_t y, uint32_t z); 143 | void writeAttack (uint32_t entityid, uint8_t hand, bool sneaking); 144 | void writeClickWindow (uint8_t window_id, int16_t slot_id, uint8_t button, uint8_t mode, slot item); 145 | void writeWindowConfirmation (uint8_t window_id, int16_t action_num, bool accepted); 146 | void writeCloseWindow (); 147 | void writeUseItem (uint8_t hand); 148 | void writePlayerBlockPlace (uint8_t hand, int64_t bx, int64_t by, int64_t bz, uint32_t face, float cx, float cy, float cz, bool inside); 149 | void writeClientSettings (uint8_t view_distance, uint8_t chat_mode, bool chat_colors, uint8_t skin_parts, uint8_t main_hand); 150 | void writeRequestRecipe (uint8_t window_id, String recipe, bool all); 151 | void writeSelectTrade (uint32_t slotid); 152 | 153 | void loginfo (String msg); 154 | void logerr (String msg); 155 | void login (String msg); 156 | void logout (String msg); 157 | 158 | float readFloat (); 159 | double readDouble (); 160 | int32_t readVarInt (); 161 | String readString (); 162 | int64_t readLong (); 163 | uint64_t readUnsignedLong(); 164 | int16_t readShort (); 165 | uint16_t readUnsignedShort(); 166 | int32_t readInt (); 167 | uint32_t readUnsignedInt(); 168 | uint32_t VarIntLength (int32_t val); 169 | uint8_t readByte (); 170 | bool readBool (); 171 | uint64_t readUUID (); 172 | void dumpBytes (uint32_t len); 173 | slot readSlot (); 174 | void readNBT (); 175 | String readNBTString (); 176 | void readNBTList (); 177 | void readNBTCompound (); 178 | 179 | void writeLength (uint32_t length); 180 | }; 181 | 182 | int32_t lsr(int32_t x, uint32_t n); 183 | float fmap(float x, float in_min, float in_max, float out_min, float out_max); 184 | 185 | #endif -------------------------------------------------------------------------------- /platformio.ini: -------------------------------------------------------------------------------- 1 | [platformio] 2 | src_dir = ${workspacedir} 3 | 4 | [env] 5 | platform = https://github.com/platformio/platform-espressif32.git 6 | board = fm-devkit 7 | framework = arduino 8 | board_build.f_cpu = 240000000L 9 | board_build.f_flash = 80000000L 10 | board_build.flash_mode = qio 11 | platform_packages = platformio/framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git 12 | upload_port = /dev/ttyUSB* 13 | monitor_speed = 115200 14 | monitor_port = /dev/ttyUSB* 15 | monitor_filters = esp32_exception_decoder 16 | src_filter = +<*> - -<.git/> 17 | build_flags = 18 | -D DEBUG=0 19 | -D CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM=64 20 | -D CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM=64 21 | -D CONFIG_ESP32_WIFI_TX_BA_WIN=32 22 | -D CONFIG_ESP32_WIFI_RX_BA_WIN=32 23 | -D CONFIG_ESP32_WIFI_IRAM_OPT 24 | -D CONFIG_ESP32_WIFI_RX_IRAM_OPT 25 | -D CONFIG_TCPIP_RECVMBOX_SIZE=20 26 | -D CONFIG_LWIP_IRAM_OPTIMIZATION 27 | -D CONFIG_TCP_SND_BUF_DEFAULT=65534 28 | -D CONFIG_TCP_WND_DEFAULT=65534 29 | -D CONFIG_TCP_RECVMBOX_SIZE=64 30 | 31 | [env:default] 32 | src_filter = ${env.src_filter} + 33 | 34 | [env:nik] 35 | src_filter = ${env.src_filter} + 36 | -------------------------------------------------------------------------------- /src/simple_client/simple_client.cpp: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | 6 | TaskHandle_t listener; 7 | WiFiClient client; 8 | minecraft mc(username, server_url, server_port, &client); 9 | 10 | void update( void * pvParameters ){ 11 | while(true){ 12 | mc.handle(); 13 | } 14 | } 15 | 16 | void setup() { 17 | disableCore0WDT(); 18 | disableCore1WDT(); 19 | disableLoopWDT(); 20 | 21 | Serial.begin(115200); 22 | delay(100); 23 | WiFi.begin(ssid, password); 24 | while (WiFi.status() != WL_CONNECTED) { 25 | delay(1000); 26 | Serial.println("Connecting to WiFi..."); 27 | } 28 | Serial.println("Connected to the WiFi network"); 29 | Serial.println(WiFi.localIP()); 30 | 31 | const char* buf; 32 | buf = server_url.c_str(); 33 | 34 | if (!client.connect(buf, server_port)) { 35 | Serial.println("Connection to host failed"); 36 | delay(1000); 37 | return; 38 | } 39 | 40 | xTaskCreatePinnedToCore(update, "listener", 100000, NULL, 2, &listener, 0); 41 | 42 | mc.writeHandShake(2); 43 | vTaskDelay(pdMS_TO_TICKS(500)); 44 | mc.writeLoginStart(); 45 | vTaskDelay(pdMS_TO_TICKS(500)); 46 | 47 | mc.writeChat("test"); 48 | Serial.println("[INFO] -> writing to chat"); 49 | vTaskDelay(pdMS_TO_TICKS(2000)); 50 | } 51 | 52 | void loop(){ 53 | if(mc.health < 0.01){ 54 | mc.writeClientStatus(0); 55 | } 56 | vTaskDelay(pdMS_TO_TICKS(1000)); 57 | } 58 | --------------------------------------------------------------------------------