3 Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "content_abm.h"
24 #include "content_sao.h"
28 #include "rollback_interface.h"
29 #include "scripting_game.h"
33 #include "network/networkprotocol.h"
34 #include "network/serveropcodes.h"
35 #include "util/base64.h"
36 #include "util/pointedthing.h"
37 #include "util/serialize.h"
39 void Server::handleCommand_Deprecated(NetworkPacket* pkt)
41 infostream << "Server: " << toServerCommandTable[pkt->getCommand()].name
42 << " not supported anymore" << std::endl;
45 void Server::handleCommand_Init(NetworkPacket* pkt)
48 if(pkt->getSize() < 1)
51 RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
55 Address address = getPeerAddress(pkt->getPeerId());
56 addr_s = address.serializeString();
58 catch (con::PeerNotFoundException &e) {
60 * no peer for this packet found
61 * most common reason is peer timeout, e.g. peer didn't
62 * respond for some time, your server was overloaded or
65 infostream << "Server::ProcessData(): Canceling: peer "
66 << pkt->getPeerId() << " not found" << std::endl;
70 // If net_proto_version is set, this client has already been handled
71 if (client->getState() > CS_Created) {
72 verbosestream << "Server: Ignoring multiple TOSERVER_INITs from "
73 << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
77 verbosestream << "Server: Got TOSERVER_INIT from " << addr_s << " (peer_id="
78 << pkt->getPeerId() << ")" << std::endl;
80 // Do not allow multiple players in simple singleplayer mode.
81 // This isn't a perfect way to do it, but will suffice for now
82 if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) {
83 infostream << "Server: Not allowing another client (" << addr_s
84 << ") to connect in simple singleplayer mode" << std::endl;
85 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SINGLEPLAYER);
89 // First byte after command is maximum supported
90 // serialization version
93 u16 min_net_proto_version = 0;
94 u16 max_net_proto_version;
96 *pkt >> client_max >> compression_modes >> min_net_proto_version
97 >> max_net_proto_version;
99 u8 our_max = SER_FMT_VER_HIGHEST_READ;
100 // Use the highest version supported by both
101 int deployed = std::min(client_max, our_max);
102 // If it's lower than the lowest supported, give up.
103 if (deployed < SER_FMT_VER_LOWEST)
104 deployed = SER_FMT_VER_INVALID;
106 if (deployed == SER_FMT_VER_INVALID) {
107 actionstream << "Server: A mismatched client tried to connect from "
108 << addr_s << std::endl;
109 infostream<<"Server: Cannot negotiate serialization version with "
110 << addr_s << std::endl;
111 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
115 client->setPendingSerializationVersion(deployed);
118 Read and check network protocol version
121 u16 net_proto_version = 0;
123 // Figure out a working version if it is possible at all
124 if (max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
125 min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX) {
126 // If maximum is larger than our maximum, go with our maximum
127 if (max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
128 net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
129 // Else go with client's maximum
131 net_proto_version = max_net_proto_version;
134 verbosestream << "Server: " << addr_s << ": Protocol version: min: "
135 << min_net_proto_version << ", max: " << max_net_proto_version
136 << ", chosen: " << net_proto_version << std::endl;
138 client->net_proto_version = net_proto_version;
140 // On this handler protocol version 25 is required
141 if (net_proto_version < 25 ||
142 net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
143 net_proto_version > SERVER_PROTOCOL_VERSION_MAX) {
144 actionstream << "Server: A mismatched client tried to connect from "
145 << addr_s << std::endl;
146 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
150 if (g_settings->getBool("strict_protocol_version_checking")) {
151 if (net_proto_version != LATEST_PROTOCOL_VERSION) {
152 actionstream << "Server: A mismatched (strict) client tried to "
153 << "connect from " << addr_s << std::endl;
154 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
159 // @TODO: check if we support same modes, but not required now
161 client->setSupportedCompressionModes(compression_modes);
163 m_clients.event(pkt->getPeerId(), CSE_Init);
166 void Server::handleCommand_Auth(NetworkPacket* pkt)
170 Address address = getPeerAddress(pkt->getPeerId());
171 addr_s = address.serializeString();
173 catch (con::PeerNotFoundException &e) {
175 * no peer for this packet found
176 * most common reason is peer timeout, e.g. peer didn't
177 * respond for some time, your server was overloaded or
180 infostream << "Server::ProcessData(): Canceling: peer "
181 << pkt->getPeerId() << " not found" << std::endl;
185 std::string playerName, playerPassword;
187 *pkt >> playerName >> playerPassword;
189 const char* playername = playerName.c_str();
191 if (playerName.size() > PLAYERNAME_SIZE) {
192 actionstream << "Server: Player with an too long name "
193 << "tried to connect from " << addr_s << std::endl;
194 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME);
198 if (string_allowed(playerName, PLAYERNAME_ALLOWED_CHARS) == false) {
199 actionstream << "Server: Player with an invalid name "
200 << "tried to connect from " << addr_s << std::endl;
201 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME);
205 if (!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0) {
206 actionstream << "Server: Player with the name \"singleplayer\" "
207 << "tried to connect from " << addr_s << std::endl;
208 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME);
214 if(m_script->on_prejoinplayer(playername, addr_s, reason)) {
215 actionstream << "Server: Player with the name \"" << playerName << "\" "
216 << "tried to connect from " << addr_s << " "
217 << "but it was disallowed for the following reason: "
218 << reason << std::endl;
219 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_CUSTOM_STRING,
225 if (playerPassword.size() > PASSWORD_SIZE) {
226 actionstream << "Server: Player with an too long password "
227 << "tried to connect from " << addr_s << std::endl;
228 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_PASSWORD);
232 infostream << "Server: New connection: \"" << playerName << "\" from "
233 << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
235 if(!base64_is_valid(playerPassword)){
236 actionstream << "Server: " << playerName
237 << " supplied invalid password hash" << std::endl;
238 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_PASSWORD);
242 // Enforce user limit.
243 // Don't enforce for users that have some admin right
244 if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") &&
245 !checkPriv(playername, "server") &&
246 !checkPriv(playername, "ban") &&
247 !checkPriv(playername, "privs") &&
248 !checkPriv(playername, "password") &&
249 playername != g_settings->get("name")) {
250 actionstream << "Server: " << playername << " tried to join, but there"
251 << " are already max_users="
252 << g_settings->getU16("max_users") << " players." << std::endl;
253 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_TOO_MANY_USERS);
257 std::string checkpwd; // Password hash to check against
258 bool has_auth = m_script->getAuth(playername, &checkpwd, NULL);
260 // If no authentication info exists for user, create it
262 if (!isSingleplayer() &&
263 g_settings->getBool("disallow_empty_password") &&
264 playerPassword.empty()) {
265 actionstream << "Server: " << playerName
266 << " supplied empty password" << std::endl;
267 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_EMPTY_PASSWORD);
270 std::string raw_default_password =
271 g_settings->get("default_password");
272 std::string initial_password =
273 translatePassword(playername, raw_default_password);
275 // If default_password is empty, allow any initial password
276 if (raw_default_password.length() == 0)
277 initial_password = playerPassword.c_str();
279 m_script->createAuth(playername, initial_password);
282 has_auth = m_script->getAuth(playername, &checkpwd, NULL);
285 actionstream << "Server: " << playerName << " cannot be authenticated"
286 << " (auth handler does not work?)" << std::endl;
287 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
291 if(playerPassword.c_str() != checkpwd) {
292 actionstream << "Server: " << playerName << " supplied wrong password"
294 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_PASSWORD);
298 RemotePlayer *player =
299 static_cast<RemotePlayer*>(m_env->getPlayer(playername));
301 if (player && player->peer_id != 0) {
302 errorstream << "Server: " << playername << ": Failed to emerge player"
303 << " (player allocated to an another client)" << std::endl;
304 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_ALREADY_CONNECTED);
307 m_clients.setPlayerName(pkt->getPeerId(), playername);
310 Answer with a TOCLIENT_INIT
313 NetworkPacket resp_pkt(TOCLIENT_AUTH_ACCEPT, 1 + 6 + 8 + 4, pkt->getPeerId());
315 resp_pkt << v3f(0,0,0) << (u64) m_env->getServerMap().getSeed()
316 << g_settings->getFloat("dedicated_server_step");
319 m_clients.event(pkt->getPeerId(), CSE_Init);
322 void Server::handleCommand_Init_Legacy(NetworkPacket* pkt)
324 // [0] u8 SER_FMT_VER_HIGHEST_READ
325 // [1] u8[20] player_name
326 // [21] u8[28] password <--- can be sent without this, from old versions
328 if (pkt->getSize() < 1+PLAYERNAME_SIZE)
331 RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
335 Address address = getPeerAddress(pkt->getPeerId());
336 addr_s = address.serializeString();
338 catch (con::PeerNotFoundException &e) {
340 * no peer for this packet found
341 * most common reason is peer timeout, e.g. peer didn't
342 * respond for some time, your server was overloaded or
345 infostream << "Server::ProcessData(): Canceling: peer "
346 << pkt->getPeerId() << " not found" << std::endl;
350 // If net_proto_version is set, this client has already been handled
351 if (client->getState() > CS_Created) {
352 verbosestream << "Server: Ignoring multiple TOSERVER_INITs from "
353 << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
357 verbosestream << "Server: Got TOSERVER_INIT from " << addr_s << " (peer_id="
358 << pkt->getPeerId() << ")" << std::endl;
360 // Do not allow multiple players in simple singleplayer mode.
361 // This isn't a perfect way to do it, but will suffice for now
362 if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) {
363 infostream << "Server: Not allowing another client (" << addr_s
364 << ") to connect in simple singleplayer mode" << std::endl;
365 DenyAccess_Legacy(pkt->getPeerId(), L"Running in simple singleplayer mode.");
369 // First byte after command is maximum supported
370 // serialization version
375 u8 our_max = SER_FMT_VER_HIGHEST_READ;
376 // Use the highest version supported by both
377 int deployed = std::min(client_max, our_max);
378 // If it's lower than the lowest supported, give up.
379 if (deployed < SER_FMT_VER_LOWEST)
380 deployed = SER_FMT_VER_INVALID;
382 if (deployed == SER_FMT_VER_INVALID) {
383 actionstream << "Server: A mismatched client tried to connect from "
384 << addr_s << std::endl;
385 infostream<<"Server: Cannot negotiate serialization version with "
386 << addr_s << std::endl;
387 DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
388 L"Your client's version is not supported.\n"
389 L"Server version is ")
390 + narrow_to_wide(g_version_string) + L"."
395 client->setPendingSerializationVersion(deployed);
398 Read and check network protocol version
401 u16 min_net_proto_version = 0;
402 if (pkt->getSize() >= 1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2)
403 min_net_proto_version = pkt->getU16(1 + PLAYERNAME_SIZE + PASSWORD_SIZE);
405 // Use same version as minimum and maximum if maximum version field
406 // doesn't exist (backwards compatibility)
407 u16 max_net_proto_version = min_net_proto_version;
408 if (pkt->getSize() >= 1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2 + 2)
409 max_net_proto_version = pkt->getU16(1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2);
411 // Start with client's maximum version
412 u16 net_proto_version = max_net_proto_version;
414 // Figure out a working version if it is possible at all
415 if (max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
416 min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX) {
417 // If maximum is larger than our maximum, go with our maximum
418 if (max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
419 net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
420 // Else go with client's maximum
422 net_proto_version = max_net_proto_version;
425 verbosestream << "Server: " << addr_s << ": Protocol version: min: "
426 << min_net_proto_version << ", max: " << max_net_proto_version
427 << ", chosen: " << net_proto_version << std::endl;
429 client->net_proto_version = net_proto_version;
431 if (net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
432 net_proto_version > SERVER_PROTOCOL_VERSION_MAX) {
433 actionstream << "Server: A mismatched client tried to connect from "
434 << addr_s << std::endl;
435 DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
436 L"Your client's version is not supported.\n"
437 L"Server version is ")
438 + narrow_to_wide(g_version_string) + L",\n"
439 + L"server's PROTOCOL_VERSION is "
440 + narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MIN))
442 + narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MAX))
443 + L", client's PROTOCOL_VERSION is "
444 + narrow_to_wide(itos(min_net_proto_version))
446 + narrow_to_wide(itos(max_net_proto_version))
451 if (g_settings->getBool("strict_protocol_version_checking")) {
452 if (net_proto_version != LATEST_PROTOCOL_VERSION) {
453 actionstream << "Server: A mismatched (strict) client tried to "
454 << "connect from " << addr_s << std::endl;
455 DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
456 L"Your client's version is not supported.\n"
457 L"Server version is ")
458 + narrow_to_wide(g_version_string) + L",\n"
459 + L"server's PROTOCOL_VERSION (strict) is "
460 + narrow_to_wide(itos(LATEST_PROTOCOL_VERSION))
461 + L", client's PROTOCOL_VERSION is "
462 + narrow_to_wide(itos(min_net_proto_version))
464 + narrow_to_wide(itos(max_net_proto_version))
473 char playername[PLAYERNAME_SIZE];
474 unsigned int playername_length = 0;
475 for (; playername_length < PLAYERNAME_SIZE; playername_length++ ) {
476 playername[playername_length] = pkt->getChar(1+playername_length);
477 if (pkt->getChar(1+playername_length) == 0)
481 if (playername_length == PLAYERNAME_SIZE) {
482 actionstream << "Server: Player with name exceeding max length "
483 << "tried to connect from " << addr_s << std::endl;
484 DenyAccess_Legacy(pkt->getPeerId(), L"Name too long");
489 if (playername[0]=='\0') {
490 actionstream << "Server: Player with an empty name "
491 << "tried to connect from " << addr_s << std::endl;
492 DenyAccess_Legacy(pkt->getPeerId(), L"Empty name");
496 if (string_allowed(playername, PLAYERNAME_ALLOWED_CHARS) == false) {
497 actionstream << "Server: Player with an invalid name "
498 << "tried to connect from " << addr_s << std::endl;
499 DenyAccess_Legacy(pkt->getPeerId(), L"Name contains unallowed characters");
503 if (!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0) {
504 actionstream << "Server: Player with the name \"singleplayer\" "
505 << "tried to connect from " << addr_s << std::endl;
506 DenyAccess_Legacy(pkt->getPeerId(), L"Name is not allowed");
512 if (m_script->on_prejoinplayer(playername, addr_s, reason)) {
513 actionstream << "Server: Player with the name \"" << playername << "\" "
514 << "tried to connect from " << addr_s << " "
515 << "but it was disallowed for the following reason: "
516 << reason << std::endl;
517 DenyAccess_Legacy(pkt->getPeerId(), narrow_to_wide(reason.c_str()));
522 infostream<<"Server: New connection: \""<<playername<<"\" from "
523 <<addr_s<<" (peer_id="<<pkt->getPeerId()<<")"<<std::endl;
526 char given_password[PASSWORD_SIZE];
527 if (pkt->getSize() < 1 + PLAYERNAME_SIZE + PASSWORD_SIZE) {
528 // old version - assume blank password
529 given_password[0] = 0;
532 for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
533 given_password[i] = pkt->getChar(21 + i);
535 given_password[PASSWORD_SIZE - 1] = 0;
538 if (!base64_is_valid(given_password)) {
539 actionstream << "Server: " << playername
540 << " supplied invalid password hash" << std::endl;
541 DenyAccess_Legacy(pkt->getPeerId(), L"Invalid password hash");
545 // Enforce user limit.
546 // Don't enforce for users that have some admin right
547 if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") &&
548 !checkPriv(playername, "server") &&
549 !checkPriv(playername, "ban") &&
550 !checkPriv(playername, "privs") &&
551 !checkPriv(playername, "password") &&
552 playername != g_settings->get("name")) {
553 actionstream << "Server: " << playername << " tried to join, but there"
554 << " are already max_users="
555 << g_settings->getU16("max_users") << " players." << std::endl;
556 DenyAccess_Legacy(pkt->getPeerId(), L"Too many users.");
560 std::string checkpwd; // Password hash to check against
561 bool has_auth = m_script->getAuth(playername, &checkpwd, NULL);
563 // If no authentication info exists for user, create it
565 if (!isSingleplayer() &&
566 g_settings->getBool("disallow_empty_password") &&
567 std::string(given_password) == "") {
568 actionstream << "Server: " << playername
569 << " supplied empty password" << std::endl;
570 DenyAccess_Legacy(pkt->getPeerId(), L"Empty passwords are "
571 L"disallowed. Set a password and try again.");
574 std::string raw_default_password =
575 g_settings->get("default_password");
576 std::string initial_password =
577 translatePassword(playername, raw_default_password);
579 // If default_password is empty, allow any initial password
580 if (raw_default_password.length() == 0)
581 initial_password = given_password;
583 m_script->createAuth(playername, initial_password);
586 has_auth = m_script->getAuth(playername, &checkpwd, NULL);
589 actionstream << "Server: " << playername << " cannot be authenticated"
590 << " (auth handler does not work?)" << std::endl;
591 DenyAccess_Legacy(pkt->getPeerId(), L"Not allowed to login");
595 if (given_password != checkpwd) {
596 actionstream << "Server: " << playername << " supplied wrong password"
598 DenyAccess_Legacy(pkt->getPeerId(), L"Wrong password");
602 RemotePlayer *player =
603 static_cast<RemotePlayer*>(m_env->getPlayer(playername));
605 if (player && player->peer_id != 0) {
606 errorstream << "Server: " << playername << ": Failed to emerge player"
607 << " (player allocated to an another client)" << std::endl;
608 DenyAccess_Legacy(pkt->getPeerId(), L"Another client is connected with this "
609 L"name. If your client closed unexpectedly, try again in "
613 m_clients.setPlayerName(pkt->getPeerId(), playername);
616 Answer with a TOCLIENT_INIT
619 NetworkPacket resp_pkt(TOCLIENT_INIT_LEGACY, 1 + 6 + 8 + 4,
622 resp_pkt << (u8) deployed << (v3s16) floatToInt(v3f(0,0,0), BS)
623 << (u64) m_env->getServerMap().getSeed()
624 << g_settings->getFloat("dedicated_server_step");
627 m_clients.event(pkt->getPeerId(), CSE_Init);
630 void Server::handleCommand_Init2(NetworkPacket* pkt)
632 verbosestream << "Server: Got TOSERVER_INIT2 from "
633 << pkt->getPeerId() << std::endl;
635 m_clients.event(pkt->getPeerId(), CSE_GotInit2);
636 u16 protocol_version = m_clients.getProtocolVersion(pkt->getPeerId());
639 ///// begin compatibility code
640 PlayerSAO* playersao = NULL;
641 if (protocol_version <= 22) {
642 playersao = StageTwoClientInit(pkt->getPeerId());
644 if (playersao == NULL) {
646 << "TOSERVER_INIT2 stage 2 client init failed for peer "
647 << pkt->getPeerId() << std::endl;
651 ///// end compatibility code
654 Send some initialization data
657 infostream << "Server: Sending content to "
658 << getPlayerName(pkt->getPeerId()) << std::endl;
660 // Send player movement settings
661 SendMovement(pkt->getPeerId());
663 // Send item definitions
664 SendItemDef(pkt->getPeerId(), m_itemdef, protocol_version);
666 // Send node definitions
667 SendNodeDef(pkt->getPeerId(), m_nodedef, protocol_version);
669 m_clients.event(pkt->getPeerId(), CSE_SetDefinitionsSent);
671 // Send media announcement
672 sendMediaAnnouncement(pkt->getPeerId());
674 // Send detached inventories
675 sendDetachedInventories(pkt->getPeerId());
678 u16 time = m_env->getTimeOfDay();
679 float time_speed = g_settings->getFloat("time_speed");
680 SendTimeOfDay(pkt->getPeerId(), time, time_speed);
682 ///// begin compatibility code
683 if (protocol_version <= 22) {
684 m_clients.event(pkt->getPeerId(), CSE_SetClientReady);
685 m_script->on_joinplayer(playersao);
687 ///// end compatibility code
689 // Warnings about protocol version can be issued here
690 if (getClient(pkt->getPeerId())->net_proto_version < LATEST_PROTOCOL_VERSION) {
691 SendChatMessage(pkt->getPeerId(), L"# Server: WARNING: YOUR CLIENT'S "
692 L"VERSION MAY NOT BE FULLY COMPATIBLE WITH THIS SERVER!");
696 void Server::handleCommand_RequestMedia(NetworkPacket* pkt)
698 std::vector<std::string> tosend;
703 infostream << "Sending " << numfiles << " files to "
704 << getPlayerName(pkt->getPeerId()) << std::endl;
705 verbosestream << "TOSERVER_REQUEST_MEDIA: " << std::endl;
707 for (u16 i = 0; i < numfiles; i++) {
712 tosend.push_back(name);
713 verbosestream << "TOSERVER_REQUEST_MEDIA: requested file "
714 << name << std::endl;
717 sendRequestedMedia(pkt->getPeerId(), tosend);
720 void Server::handleCommand_ReceivedMedia(NetworkPacket* pkt)
724 void Server::handleCommand_ClientReady(NetworkPacket* pkt)
726 u16 peer_id = pkt->getPeerId();
727 u16 peer_proto_ver = getClient(peer_id, CS_InitDone)->net_proto_version;
729 // clients <= protocol version 22 did not send ready message,
730 // they're already initialized
731 if (peer_proto_ver <= 22) {
732 infostream << "Client sent message not expected by a "
733 << "client using protocol version <= 22,"
734 << "disconnecting peer_id: " << peer_id << std::endl;
735 m_con.DisconnectPeer(peer_id);
739 PlayerSAO* playersao = StageTwoClientInit(peer_id);
741 if (playersao == NULL) {
743 << "TOSERVER_CLIENT_READY stage 2 client init failed for peer_id: "
744 << peer_id << std::endl;
745 m_con.DisconnectPeer(peer_id);
750 if (pkt->getSize() < 8) {
752 << "TOSERVER_CLIENT_READY client sent inconsistent data, disconnecting peer_id: "
753 << peer_id << std::endl;
754 m_con.DisconnectPeer(peer_id);
758 u8 major_ver, minor_ver, patch_ver, reserved;
759 std::string full_ver;
760 *pkt >> major_ver >> minor_ver >> patch_ver >> reserved >> full_ver;
762 m_clients.setClientVersion(
763 peer_id, major_ver, minor_ver, patch_ver,
766 m_clients.event(peer_id, CSE_SetClientReady);
767 m_script->on_joinplayer(playersao);
770 void Server::handleCommand_GotBlocks(NetworkPacket* pkt)
772 if (pkt->getSize() < 1)
786 RemoteClient *client = getClient(pkt->getPeerId());
788 for (u16 i = 0; i < count; i++) {
789 if ((s16)pkt->getSize() < 1 + (i + 1) * 6)
790 throw con::InvalidIncomingDataException
791 ("GOTBLOCKS length is too short");
800 void Server::handleCommand_PlayerPos(NetworkPacket* pkt)
802 if (pkt->getSize() < 12 + 12 + 4 + 4)
806 s32 f32pitch, f32yaw;
813 f32 pitch = (f32)f32pitch / 100.0;
814 f32 yaw = (f32)f32yaw / 100.0;
817 if (pkt->getSize() >= 12 + 12 + 4 + 4 + 4)
820 v3f position((f32)ps.X / 100.0, (f32)ps.Y / 100.0, (f32)ps.Z / 100.0);
821 v3f speed((f32)ss.X / 100.0, (f32)ss.Y / 100.0, (f32)ss.Z / 100.0);
823 pitch = modulo360f(pitch);
824 yaw = modulo360f(yaw);
826 Player *player = m_env->getPlayer(pkt->getPeerId());
827 if (player == NULL) {
828 errorstream << "Server::ProcessData(): Canceling: "
829 "No player for peer_id=" << pkt->getPeerId()
830 << " disconnecting peer!" << std::endl;
831 m_con.DisconnectPeer(pkt->getPeerId());
835 // If player is dead we don't care of this packet
836 if (player->isDead()) {
837 verbosestream << "TOSERVER_PLAYERPOS: " << player->getName()
838 << " is dead. Ignoring packet";
842 PlayerSAO *playersao = player->getPlayerSAO();
843 if (playersao == NULL) {
844 errorstream << "Server::ProcessData(): Canceling: "
845 "No player object for peer_id=" << pkt->getPeerId()
846 << " disconnecting peer!" << std::endl;
847 m_con.DisconnectPeer(pkt->getPeerId());
851 player->setPosition(position);
852 player->setSpeed(speed);
853 player->setPitch(pitch);
855 player->keyPressed = keyPressed;
856 player->control.up = (keyPressed & 1);
857 player->control.down = (keyPressed & 2);
858 player->control.left = (keyPressed & 4);
859 player->control.right = (keyPressed & 8);
860 player->control.jump = (keyPressed & 16);
861 player->control.aux1 = (keyPressed & 32);
862 player->control.sneak = (keyPressed & 64);
863 player->control.LMB = (keyPressed & 128);
864 player->control.RMB = (keyPressed & 256);
866 if (playersao->checkMovementCheat()) {
868 m_script->on_cheat(playersao, "moved_too_fast");
869 SendMovePlayer(pkt->getPeerId());
873 void Server::handleCommand_DeletedBlocks(NetworkPacket* pkt)
875 if (pkt->getSize() < 1)
889 RemoteClient *client = getClient(pkt->getPeerId());
891 for (u16 i = 0; i < count; i++) {
892 if ((s16)pkt->getSize() < 1 + (i + 1) * 6)
893 throw con::InvalidIncomingDataException
894 ("DELETEDBLOCKS length is too short");
898 client->SetBlockNotSent(p);
902 void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
904 Player *player = m_env->getPlayer(pkt->getPeerId());
905 if (player == NULL) {
906 errorstream << "Server::ProcessData(): Canceling: "
907 "No player for peer_id=" << pkt->getPeerId()
908 << " disconnecting peer!" << std::endl;
909 m_con.DisconnectPeer(pkt->getPeerId());
913 PlayerSAO *playersao = player->getPlayerSAO();
914 if (playersao == NULL) {
915 errorstream << "Server::ProcessData(): Canceling: "
916 "No player object for peer_id=" << pkt->getPeerId()
917 << " disconnecting peer!" << std::endl;
918 m_con.DisconnectPeer(pkt->getPeerId());
922 // Strip command and create a stream
923 std::string datastring(pkt->getString(0), pkt->getSize());
924 verbosestream << "TOSERVER_INVENTORY_ACTION: data=" << datastring
926 std::istringstream is(datastring, std::ios_base::binary);
928 InventoryAction *a = InventoryAction::deSerialize(is);
930 infostream << "TOSERVER_INVENTORY_ACTION: "
931 << "InventoryAction::deSerialize() returned NULL"
936 // If something goes wrong, this player is to blame
937 RollbackScopeActor rollback_scope(m_rollback,
938 std::string("player:")+player->getName());
941 Note: Always set inventory not sent, to repair cases
942 where the client made a bad prediction.
946 Handle restrictions and special cases of the move action
948 if (a->getType() == IACTION_MOVE) {
949 IMoveAction *ma = (IMoveAction*)a;
951 ma->from_inv.applyCurrentPlayer(player->getName());
952 ma->to_inv.applyCurrentPlayer(player->getName());
954 setInventoryModified(ma->from_inv, false);
955 setInventoryModified(ma->to_inv, false);
957 bool from_inv_is_current_player =
958 (ma->from_inv.type == InventoryLocation::PLAYER) &&
959 (ma->from_inv.name == player->getName());
961 bool to_inv_is_current_player =
962 (ma->to_inv.type == InventoryLocation::PLAYER) &&
963 (ma->to_inv.name == player->getName());
966 Disable moving items out of craftpreview
968 if (ma->from_list == "craftpreview") {
969 infostream << "Ignoring IMoveAction from "
970 << (ma->from_inv.dump()) << ":" << ma->from_list
971 << " to " << (ma->to_inv.dump()) << ":" << ma->to_list
972 << " because src is " << ma->from_list << std::endl;
978 Disable moving items into craftresult and craftpreview
980 if (ma->to_list == "craftpreview" || ma->to_list == "craftresult") {
981 infostream << "Ignoring IMoveAction from "
982 << (ma->from_inv.dump()) << ":" << ma->from_list
983 << " to " << (ma->to_inv.dump()) << ":" << ma->to_list
984 << " because dst is " << ma->to_list << std::endl;
989 // Disallow moving items in elsewhere than player's inventory
990 // if not allowed to interact
991 if (!checkPriv(player->getName(), "interact") &&
992 (!from_inv_is_current_player ||
993 !to_inv_is_current_player)) {
994 infostream << "Cannot move outside of player's inventory: "
995 << "No interact privilege" << std::endl;
1001 Handle restrictions and special cases of the drop action
1003 else if (a->getType() == IACTION_DROP) {
1004 IDropAction *da = (IDropAction*)a;
1006 da->from_inv.applyCurrentPlayer(player->getName());
1008 setInventoryModified(da->from_inv, false);
1011 Disable dropping items out of craftpreview
1013 if (da->from_list == "craftpreview") {
1014 infostream << "Ignoring IDropAction from "
1015 << (da->from_inv.dump()) << ":" << da->from_list
1016 << " because src is " << da->from_list << std::endl;
1021 // Disallow dropping items if not allowed to interact
1022 if (!checkPriv(player->getName(), "interact")) {
1028 Handle restrictions and special cases of the craft action
1030 else if (a->getType() == IACTION_CRAFT) {
1031 ICraftAction *ca = (ICraftAction*)a;
1033 ca->craft_inv.applyCurrentPlayer(player->getName());
1035 setInventoryModified(ca->craft_inv, false);
1037 //bool craft_inv_is_current_player =
1038 // (ca->craft_inv.type == InventoryLocation::PLAYER) &&
1039 // (ca->craft_inv.name == player->getName());
1041 // Disallow crafting if not allowed to interact
1042 if (!checkPriv(player->getName(), "interact")) {
1043 infostream << "Cannot craft: "
1044 << "No interact privilege" << std::endl;
1051 a->apply(this, playersao, this);
1055 SendInventory(playersao);
1058 void Server::handleCommand_ChatMessage(NetworkPacket* pkt)
1068 std::wstring message;
1069 for (u16 i = 0; i < len; i++) {
1073 message += (wchar_t)tmp_wchar;
1076 Player *player = m_env->getPlayer(pkt->getPeerId());
1077 if (player == NULL) {
1078 errorstream << "Server::ProcessData(): Canceling: "
1079 "No player for peer_id=" << pkt->getPeerId()
1080 << " disconnecting peer!" << std::endl;
1081 m_con.DisconnectPeer(pkt->getPeerId());
1085 // If something goes wrong, this player is to blame
1086 RollbackScopeActor rollback_scope(m_rollback,
1087 std::string("player:")+player->getName());
1089 // Get player name of this client
1090 std::wstring name = narrow_to_wide(player->getName());
1093 bool ate = m_script->on_chat_message(player->getName(),
1094 wide_to_narrow(message));
1095 // If script ate the message, don't proceed
1099 // Line to send to players
1101 // Whether to send to the player that sent the line
1102 bool send_to_sender_only = false;
1104 // Commands are implemented in Lua, so only catch invalid
1105 // commands that were not "eaten" and send an error back
1106 if (message[0] == L'/') {
1107 message = message.substr(1);
1108 send_to_sender_only = true;
1109 if (message.length() == 0)
1110 line += L"-!- Empty command";
1112 line += L"-!- Invalid command: " + str_split(message, L' ')[0];
1115 if (checkPriv(player->getName(), "shout")) {
1121 line += L"-!- You don't have permission to shout.";
1122 send_to_sender_only = true;
1129 Send the message to sender
1131 if (send_to_sender_only) {
1132 SendChatMessage(pkt->getPeerId(), line);
1135 Send the message to others
1138 actionstream << "CHAT: " << wide_to_narrow(line)<<std::endl;
1140 std::vector<u16> clients = m_clients.getClientIDs();
1142 for (std::vector<u16>::iterator i = clients.begin();
1143 i != clients.end(); ++i) {
1144 if (*i != pkt->getPeerId())
1145 SendChatMessage(*i, line);
1151 void Server::handleCommand_Damage(NetworkPacket* pkt)
1157 Player *player = m_env->getPlayer(pkt->getPeerId());
1158 if (player == NULL) {
1159 errorstream << "Server::ProcessData(): Canceling: "
1160 "No player for peer_id=" << pkt->getPeerId()
1161 << " disconnecting peer!" << std::endl;
1162 m_con.DisconnectPeer(pkt->getPeerId());
1166 PlayerSAO *playersao = player->getPlayerSAO();
1167 if (playersao == NULL) {
1168 errorstream << "Server::ProcessData(): Canceling: "
1169 "No player object for peer_id=" << pkt->getPeerId()
1170 << " disconnecting peer!" << std::endl;
1171 m_con.DisconnectPeer(pkt->getPeerId());
1175 if (g_settings->getBool("enable_damage")) {
1176 actionstream << player->getName() << " damaged by "
1177 << (int)damage << " hp at " << PP(player->getPosition() / BS)
1180 playersao->setHP(playersao->getHP() - damage);
1181 SendPlayerHPOrDie(playersao->getPeerID(), playersao->getHP() == 0);
1185 void Server::handleCommand_Breath(NetworkPacket* pkt)
1191 Player *player = m_env->getPlayer(pkt->getPeerId());
1192 if (player == NULL) {
1193 errorstream << "Server::ProcessData(): Canceling: "
1194 "No player for peer_id=" << pkt->getPeerId()
1195 << " disconnecting peer!" << std::endl;
1196 m_con.DisconnectPeer(pkt->getPeerId());
1201 * If player is dead, we don't need to update the breath
1204 if (player->isDead()) {
1205 verbosestream << "TOSERVER_BREATH: " << player->getName()
1206 << " is dead. Ignoring packet";
1211 PlayerSAO *playersao = player->getPlayerSAO();
1212 if (playersao == NULL) {
1213 errorstream << "Server::ProcessData(): Canceling: "
1214 "No player object for peer_id=" << pkt->getPeerId()
1215 << " disconnecting peer!" << std::endl;
1216 m_con.DisconnectPeer(pkt->getPeerId());
1220 playersao->setBreath(breath);
1221 SendPlayerBreath(pkt->getPeerId());
1224 void Server::handleCommand_Password(NetworkPacket* pkt)
1226 if ((pkt->getCommand() == TOSERVER_PASSWORD && pkt->getSize() < 4) ||
1227 pkt->getSize() != PASSWORD_SIZE * 2)
1233 if (pkt->getCommand() == TOSERVER_PASSWORD) {
1234 *pkt >> oldpwd >> newpwd;
1237 // Protocol v24 compat. Please remove in 1 year after
1238 // client convergence to 0.4.13/0.5.x
1240 for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
1241 char c = pkt->getChar(i);
1247 for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
1248 char c = pkt->getChar(PASSWORD_SIZE + i);
1255 Player *player = m_env->getPlayer(pkt->getPeerId());
1256 if (player == NULL) {
1257 errorstream << "Server::ProcessData(): Canceling: "
1258 "No player for peer_id=" << pkt->getPeerId()
1259 << " disconnecting peer!" << std::endl;
1260 m_con.DisconnectPeer(pkt->getPeerId());
1264 if (!base64_is_valid(newpwd)) {
1265 infostream<<"Server: " << player->getName() <<
1266 " supplied invalid password hash" << std::endl;
1267 // Wrong old password supplied!!
1268 SendChatMessage(pkt->getPeerId(), L"Invalid new password hash supplied. Password NOT changed.");
1272 infostream << "Server: Client requests a password change from "
1273 << "'" << oldpwd << "' to '" << newpwd << "'" << std::endl;
1275 std::string playername = player->getName();
1277 std::string checkpwd;
1278 m_script->getAuth(playername, &checkpwd, NULL);
1280 if (oldpwd != checkpwd) {
1281 infostream << "Server: invalid old password" << std::endl;
1282 // Wrong old password supplied!!
1283 SendChatMessage(pkt->getPeerId(), L"Invalid old password supplied. Password NOT changed.");
1287 bool success = m_script->setPassword(playername, newpwd);
1289 actionstream << player->getName() << " changes password" << std::endl;
1290 SendChatMessage(pkt->getPeerId(), L"Password change successful.");
1292 actionstream << player->getName() << " tries to change password but "
1293 << "it fails" << std::endl;
1294 SendChatMessage(pkt->getPeerId(), L"Password change failed or unavailable.");
1298 void Server::handleCommand_PlayerItem(NetworkPacket* pkt)
1300 if (pkt->getSize() < 2)
1303 Player *player = m_env->getPlayer(pkt->getPeerId());
1304 if (player == NULL) {
1305 errorstream << "Server::ProcessData(): Canceling: "
1306 "No player for peer_id=" << pkt->getPeerId()
1307 << " disconnecting peer!" << std::endl;
1308 m_con.DisconnectPeer(pkt->getPeerId());
1312 PlayerSAO *playersao = player->getPlayerSAO();
1313 if (playersao == NULL) {
1314 errorstream << "Server::ProcessData(): Canceling: "
1315 "No player object for peer_id=" << pkt->getPeerId()
1316 << " disconnecting peer!" << std::endl;
1317 m_con.DisconnectPeer(pkt->getPeerId());
1325 playersao->setWieldIndex(item);
1328 void Server::handleCommand_Respawn(NetworkPacket* pkt)
1330 Player *player = m_env->getPlayer(pkt->getPeerId());
1331 if (player == NULL) {
1332 errorstream << "Server::ProcessData(): Canceling: "
1333 "No player for peer_id=" << pkt->getPeerId()
1334 << " disconnecting peer!" << std::endl;
1335 m_con.DisconnectPeer(pkt->getPeerId());
1339 if (!player->isDead())
1342 RespawnPlayer(pkt->getPeerId());
1344 actionstream << player->getName() << " respawns at "
1345 << PP(player->getPosition()/BS) << std::endl;
1347 // ActiveObject is added to environment in AsyncRunStep after
1348 // the previous addition has been successfully removed
1351 void Server::handleCommand_Interact(NetworkPacket* pkt)
1353 std::string datastring(pkt->getString(0), pkt->getSize());
1354 std::istringstream is(datastring, std::ios_base::binary);
1360 [5] u32 length of the next item
1361 [9] serialized PointedThing
1363 0: start digging (from undersurface) or use
1364 1: stop digging (all parameters ignored)
1365 2: digging completed
1366 3: place block or item (to abovesurface)
1369 u8 action = readU8(is);
1370 u16 item_i = readU16(is);
1371 std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
1372 PointedThing pointed;
1373 pointed.deSerialize(tmp_is);
1375 verbosestream << "TOSERVER_INTERACT: action=" << (int)action << ", item="
1376 << item_i << ", pointed=" << pointed.dump() << std::endl;
1378 Player *player = m_env->getPlayer(pkt->getPeerId());
1379 if (player == NULL) {
1380 errorstream << "Server::ProcessData(): Canceling: "
1381 "No player for peer_id=" << pkt->getPeerId()
1382 << " disconnecting peer!" << std::endl;
1383 m_con.DisconnectPeer(pkt->getPeerId());
1387 PlayerSAO *playersao = player->getPlayerSAO();
1388 if (playersao == NULL) {
1389 errorstream << "Server::ProcessData(): Canceling: "
1390 "No player object for peer_id=" << pkt->getPeerId()
1391 << " disconnecting peer!" << std::endl;
1392 m_con.DisconnectPeer(pkt->getPeerId());
1396 if (player->isDead()) {
1397 verbosestream << "TOSERVER_INTERACT: " << player->getName()
1398 << " is dead. Ignoring packet";
1402 v3f player_pos = playersao->getLastGoodPosition();
1404 // Update wielded item
1405 playersao->setWieldIndex(item_i);
1407 // Get pointed to node (undefined if not POINTEDTYPE_NODE)
1408 v3s16 p_under = pointed.node_undersurface;
1409 v3s16 p_above = pointed.node_abovesurface;
1411 // Get pointed to object (NULL if not POINTEDTYPE_OBJECT)
1412 ServerActiveObject *pointed_object = NULL;
1413 if (pointed.type == POINTEDTHING_OBJECT) {
1414 pointed_object = m_env->getActiveObject(pointed.object_id);
1415 if (pointed_object == NULL) {
1416 verbosestream << "TOSERVER_INTERACT: "
1417 "pointed object is NULL" << std::endl;
1423 v3f pointed_pos_under = player_pos;
1424 v3f pointed_pos_above = player_pos;
1425 if (pointed.type == POINTEDTHING_NODE) {
1426 pointed_pos_under = intToFloat(p_under, BS);
1427 pointed_pos_above = intToFloat(p_above, BS);
1429 else if (pointed.type == POINTEDTHING_OBJECT) {
1430 pointed_pos_under = pointed_object->getBasePosition();
1431 pointed_pos_above = pointed_pos_under;
1435 Check that target is reasonably close
1436 (only when digging or placing things)
1438 if (action == 0 || action == 2 || action == 3) {
1439 float d = player_pos.getDistanceFrom(pointed_pos_under);
1440 float max_d = BS * 14; // Just some large enough value
1442 actionstream << "Player " << player->getName()
1443 << " tried to access " << pointed.dump()
1444 << " from too far: "
1445 << "d=" << d <<", max_d=" << max_d
1446 << ". ignoring." << std::endl;
1447 // Re-send block to revert change on client-side
1448 RemoteClient *client = getClient(pkt->getPeerId());
1449 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1450 client->SetBlockNotSent(blockpos);
1452 m_script->on_cheat(playersao, "interacted_too_far");
1459 Make sure the player is allowed to do it
1461 if (!checkPriv(player->getName(), "interact")) {
1462 actionstream<<player->getName()<<" attempted to interact with "
1463 <<pointed.dump()<<" without 'interact' privilege"
1465 // Re-send block to revert change on client-side
1466 RemoteClient *client = getClient(pkt->getPeerId());
1467 // Digging completed -> under
1469 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1470 client->SetBlockNotSent(blockpos);
1472 // Placement -> above
1474 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
1475 client->SetBlockNotSent(blockpos);
1481 If something goes wrong, this player is to blame
1483 RollbackScopeActor rollback_scope(m_rollback,
1484 std::string("player:")+player->getName());
1487 0: start digging or punch object
1490 if (pointed.type == POINTEDTHING_NODE) {
1492 NOTE: This can be used in the future to check if
1493 somebody is cheating, by checking the timing.
1495 MapNode n(CONTENT_IGNORE);
1497 n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
1499 n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
1502 infostream << "Server: Not punching: Node not found."
1503 << " Adding block to emerge queue."
1505 m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false);
1508 if (n.getContent() != CONTENT_IGNORE)
1509 m_script->node_on_punch(p_under, n, playersao, pointed);
1511 playersao->noCheatDigStart(p_under);
1513 else if (pointed.type == POINTEDTHING_OBJECT) {
1514 // Skip if object has been removed
1515 if (pointed_object->m_removed)
1518 actionstream<<player->getName()<<" punches object "
1519 <<pointed.object_id<<": "
1520 <<pointed_object->getDescription()<<std::endl;
1522 ItemStack punchitem = playersao->getWieldedItem();
1523 ToolCapabilities toolcap =
1524 punchitem.getToolCapabilities(m_itemdef);
1525 v3f dir = (pointed_object->getBasePosition() -
1526 (player->getPosition() + player->getEyeOffset())
1528 float time_from_last_punch =
1529 playersao->resetTimeFromLastPunch();
1531 s16 src_original_hp = pointed_object->getHP();
1532 s16 dst_origin_hp = playersao->getHP();
1534 pointed_object->punch(dir, &toolcap, playersao,
1535 time_from_last_punch);
1537 // If the object is a player and its HP changed
1538 if (src_original_hp != pointed_object->getHP() &&
1539 pointed_object->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
1540 SendPlayerHPOrDie(((PlayerSAO*)pointed_object)->getPeerID(),
1541 pointed_object->getHP() == 0);
1544 // If the puncher is a player and its HP changed
1545 if (dst_origin_hp != playersao->getHP()) {
1546 SendPlayerHPOrDie(playersao->getPeerID(), playersao->getHP() == 0);
1555 else if (action == 1) {
1559 2: Digging completed
1561 else if (action == 2) {
1562 // Only digging of nodes
1563 if (pointed.type == POINTEDTHING_NODE) {
1565 MapNode n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
1567 infostream << "Server: Not finishing digging: Node not found."
1568 << " Adding block to emerge queue."
1570 m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false);
1573 /* Cheat prevention */
1574 bool is_valid_dig = true;
1575 if (!isSingleplayer() && !g_settings->getBool("disable_anticheat")) {
1576 v3s16 nocheat_p = playersao->getNoCheatDigPos();
1577 float nocheat_t = playersao->getNoCheatDigTime();
1578 playersao->noCheatDigEnd();
1579 // If player didn't start digging this, ignore dig
1580 if (nocheat_p != p_under) {
1581 infostream << "Server: NoCheat: " << player->getName()
1582 << " started digging "
1583 << PP(nocheat_p) << " and completed digging "
1584 << PP(p_under) << "; not digging." << std::endl;
1585 is_valid_dig = false;
1587 m_script->on_cheat(playersao, "finished_unknown_dig");
1589 // Get player's wielded item
1590 ItemStack playeritem;
1591 InventoryList *mlist = playersao->getInventory()->getList("main");
1593 playeritem = mlist->getItem(playersao->getWieldIndex());
1594 ToolCapabilities playeritem_toolcap =
1595 playeritem.getToolCapabilities(m_itemdef);
1596 // Get diggability and expected digging time
1597 DigParams params = getDigParams(m_nodedef->get(n).groups,
1598 &playeritem_toolcap);
1599 // If can't dig, try hand
1600 if (!params.diggable) {
1601 const ItemDefinition &hand = m_itemdef->get("");
1602 const ToolCapabilities *tp = hand.tool_capabilities;
1604 params = getDigParams(m_nodedef->get(n).groups, tp);
1606 // If can't dig, ignore dig
1607 if (!params.diggable) {
1608 infostream << "Server: NoCheat: " << player->getName()
1609 << " completed digging " << PP(p_under)
1610 << ", which is not diggable with tool. not digging."
1612 is_valid_dig = false;
1614 m_script->on_cheat(playersao, "dug_unbreakable");
1616 // Check digging time
1617 // If already invalidated, we don't have to
1618 if (!is_valid_dig) {
1619 // Well not our problem then
1621 // Clean and long dig
1622 else if (params.time > 2.0 && nocheat_t * 1.2 > params.time) {
1623 // All is good, but grab time from pool; don't care if
1624 // it's actually available
1625 playersao->getDigPool().grab(params.time);
1627 // Short or laggy dig
1628 // Try getting the time from pool
1629 else if (playersao->getDigPool().grab(params.time)) {
1634 infostream << "Server: NoCheat: " << player->getName()
1635 << " completed digging " << PP(p_under)
1636 << "too fast; not digging." << std::endl;
1637 is_valid_dig = false;
1639 m_script->on_cheat(playersao, "dug_too_fast");
1643 /* Actually dig node */
1645 if (is_valid_dig && n.getContent() != CONTENT_IGNORE)
1646 m_script->node_on_dig(p_under, n, playersao);
1648 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1649 RemoteClient *client = getClient(pkt->getPeerId());
1650 // Send unusual result (that is, node not being removed)
1651 if (m_env->getMap().getNodeNoEx(p_under).getContent() != CONTENT_AIR) {
1652 // Re-send block to revert change on client-side
1653 client->SetBlockNotSent(blockpos);
1656 client->ResendBlockIfOnWire(blockpos);
1662 3: place block or right-click object
1664 else if (action == 3) {
1665 ItemStack item = playersao->getWieldedItem();
1667 // Reset build time counter
1668 if (pointed.type == POINTEDTHING_NODE &&
1669 item.getDefinition(m_itemdef).type == ITEM_NODE)
1670 getClient(pkt->getPeerId())->m_time_from_building = 0.0;
1672 if (pointed.type == POINTEDTHING_OBJECT) {
1673 // Right click object
1675 // Skip if object has been removed
1676 if (pointed_object->m_removed)
1679 actionstream << player->getName() << " right-clicks object "
1680 << pointed.object_id << ": "
1681 << pointed_object->getDescription() << std::endl;
1684 pointed_object->rightClick(playersao);
1686 else if (m_script->item_OnPlace(
1687 item, playersao, pointed)) {
1688 // Placement was handled in lua
1690 // Apply returned ItemStack
1691 if (playersao->setWieldedItem(item)) {
1692 SendInventory(playersao);
1696 // If item has node placement prediction, always send the
1697 // blocks to make sure the client knows what exactly happened
1698 RemoteClient *client = getClient(pkt->getPeerId());
1699 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
1700 v3s16 blockpos2 = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1701 if (item.getDefinition(m_itemdef).node_placement_prediction != "") {
1702 client->SetBlockNotSent(blockpos);
1703 if (blockpos2 != blockpos) {
1704 client->SetBlockNotSent(blockpos2);
1708 client->ResendBlockIfOnWire(blockpos);
1709 if (blockpos2 != blockpos) {
1710 client->ResendBlockIfOnWire(blockpos2);
1718 else if (action == 4) {
1719 ItemStack item = playersao->getWieldedItem();
1721 actionstream << player->getName() << " uses " << item.name
1722 << ", pointing at " << pointed.dump() << std::endl;
1724 if (m_script->item_OnUse(
1725 item, playersao, pointed)) {
1726 // Apply returned ItemStack
1727 if (playersao->setWieldedItem(item)) {
1728 SendInventory(playersao);
1736 Catch invalid actions
1739 infostream << "WARNING: Server: Invalid action "
1740 << action << std::endl;
1744 void Server::handleCommand_RemovedSounds(NetworkPacket* pkt)
1748 for (u16 k = 0; k < num; k++) {
1753 std::map<s32, ServerPlayingSound>::iterator i =
1754 m_playing_sounds.find(id);
1756 if (i == m_playing_sounds.end())
1759 ServerPlayingSound &psound = i->second;
1760 psound.clients.erase(pkt->getPeerId());
1761 if (psound.clients.empty())
1762 m_playing_sounds.erase(i++);
1766 void Server::handleCommand_NodeMetaFields(NetworkPacket* pkt)
1769 std::string formname;
1772 *pkt >> p >> formname >> num;
1774 std::map<std::string, std::string> fields;
1775 for (u16 k = 0; k < num; k++) {
1776 std::string fieldname;
1778 fields[fieldname] = pkt->readLongString();
1781 Player *player = m_env->getPlayer(pkt->getPeerId());
1782 if (player == NULL) {
1783 errorstream << "Server::ProcessData(): Canceling: "
1784 "No player for peer_id=" << pkt->getPeerId()
1785 << " disconnecting peer!" << std::endl;
1786 m_con.DisconnectPeer(pkt->getPeerId());
1790 PlayerSAO *playersao = player->getPlayerSAO();
1791 if (playersao == NULL) {
1792 errorstream << "Server::ProcessData(): Canceling: "
1793 "No player object for peer_id=" << pkt->getPeerId()
1794 << " disconnecting peer!" << std::endl;
1795 m_con.DisconnectPeer(pkt->getPeerId());
1799 // If something goes wrong, this player is to blame
1800 RollbackScopeActor rollback_scope(m_rollback,
1801 std::string("player:")+player->getName());
1803 // Check the target node for rollback data; leave others unnoticed
1804 RollbackNode rn_old(&m_env->getMap(), p, this);
1806 m_script->node_on_receive_fields(p, formname, fields, playersao);
1808 // Report rollback data
1809 RollbackNode rn_new(&m_env->getMap(), p, this);
1810 if (rollback() && rn_new != rn_old) {
1811 RollbackAction action;
1812 action.setSetNode(p, rn_old, rn_new);
1813 rollback()->reportAction(action);
1817 void Server::handleCommand_InventoryFields(NetworkPacket* pkt)
1819 std::string formname;
1822 *pkt >> formname >> num;
1824 std::map<std::string, std::string> fields;
1825 for (u16 k = 0; k < num; k++) {
1826 std::string fieldname;
1828 fields[fieldname] = pkt->readLongString();
1831 Player *player = m_env->getPlayer(pkt->getPeerId());
1832 if (player == NULL) {
1833 errorstream << "Server::ProcessData(): Canceling: "
1834 "No player for peer_id=" << pkt->getPeerId()
1835 << " disconnecting peer!" << std::endl;
1836 m_con.DisconnectPeer(pkt->getPeerId());
1840 PlayerSAO *playersao = player->getPlayerSAO();
1841 if (playersao == NULL) {
1842 errorstream << "Server::ProcessData(): Canceling: "
1843 "No player object for peer_id=" << pkt->getPeerId()
1844 << " disconnecting peer!" << std::endl;
1845 m_con.DisconnectPeer(pkt->getPeerId());
1849 m_script->on_playerReceiveFields(playersao, formname, fields);