├── .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:
--------------------------------------------------------------------------------
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573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. 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 | 
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