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/auth.h"
36 #include "util/base64.h"
37 #include "util/pointedthing.h"
38 #include "util/serialize.h"
41 void Server::handleCommand_Deprecated(NetworkPacket* pkt)
43 infostream << "Server: " << toServerCommandTable[pkt->getCommand()].name
44 << " not supported anymore" << std::endl;
47 void Server::handleCommand_Init(NetworkPacket* pkt)
50 if(pkt->getSize() < 1)
53 RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
57 Address address = getPeerAddress(pkt->getPeerId());
58 addr_s = address.serializeString();
60 catch (con::PeerNotFoundException &e) {
62 * no peer for this packet found
63 * most common reason is peer timeout, e.g. peer didn't
64 * respond for some time, your server was overloaded or
67 infostream << "Server::ProcessData(): Canceling: peer "
68 << pkt->getPeerId() << " not found" << std::endl;
72 // If net_proto_version is set, this client has already been handled
73 if (client->getState() > CS_Created) {
74 verbosestream << "Server: Ignoring multiple TOSERVER_INITs from "
75 << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
79 verbosestream << "Server: Got TOSERVER_INIT from " << addr_s << " (peer_id="
80 << pkt->getPeerId() << ")" << std::endl;
82 // Do not allow multiple players in simple singleplayer mode.
83 // This isn't a perfect way to do it, but will suffice for now
84 if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) {
85 infostream << "Server: Not allowing another client (" << addr_s
86 << ") to connect in simple singleplayer mode" << std::endl;
87 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SINGLEPLAYER);
91 // First byte after command is maximum supported
92 // serialization version
95 u16 min_net_proto_version = 0;
96 u16 max_net_proto_version;
97 std::string playerName;
99 *pkt >> client_max >> supp_compr_modes >> min_net_proto_version
100 >> max_net_proto_version >> playerName;
102 u8 our_max = SER_FMT_VER_HIGHEST_READ;
103 // Use the highest version supported by both
104 u8 depl_serial_v = std::min(client_max, our_max);
105 // If it's lower than the lowest supported, give up.
106 if (depl_serial_v < SER_FMT_VER_LOWEST)
107 depl_serial_v = SER_FMT_VER_INVALID;
109 if (depl_serial_v == SER_FMT_VER_INVALID) {
110 actionstream << "Server: A mismatched client tried to connect from "
111 << addr_s << std::endl;
112 infostream<<"Server: Cannot negotiate serialization version with "
113 << addr_s << std::endl;
114 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
118 client->setPendingSerializationVersion(depl_serial_v);
121 Read and check network protocol version
124 u16 net_proto_version = 0;
126 // Figure out a working version if it is possible at all
127 if (max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
128 min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX) {
129 // If maximum is larger than our maximum, go with our maximum
130 if (max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
131 net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
132 // Else go with client's maximum
134 net_proto_version = max_net_proto_version;
137 verbosestream << "Server: " << addr_s << ": Protocol version: min: "
138 << min_net_proto_version << ", max: " << max_net_proto_version
139 << ", chosen: " << net_proto_version << std::endl;
141 client->net_proto_version = net_proto_version;
143 // On this handler at least protocol version 25 is required
144 if (net_proto_version < 25 ||
145 net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
146 net_proto_version > SERVER_PROTOCOL_VERSION_MAX) {
147 actionstream << "Server: A mismatched client tried to connect from "
148 << addr_s << std::endl;
149 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
153 if (g_settings->getBool("strict_protocol_version_checking")) {
154 if (net_proto_version != LATEST_PROTOCOL_VERSION) {
155 actionstream << "Server: A mismatched (strict) client tried to "
156 << "connect from " << addr_s << std::endl;
157 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
165 const char* playername = playerName.c_str();
167 if (playerName.size() > PLAYERNAME_SIZE) {
168 actionstream << "Server: Player with an too long name "
169 << "tried to connect from " << addr_s << std::endl;
170 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME);
174 if (string_allowed(playerName, PLAYERNAME_ALLOWED_CHARS) == false) {
175 actionstream << "Server: Player with an invalid name "
176 << "tried to connect from " << addr_s << std::endl;
177 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME);
181 m_clients.setPlayerName(pkt->getPeerId(), playername);
182 //TODO (later) case insensitivity
184 std::string legacyPlayerNameCasing = playerName;
186 if (!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0) {
187 actionstream << "Server: Player with the name \"singleplayer\" "
188 << "tried to connect from " << addr_s << std::endl;
189 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME);
195 if(m_script->on_prejoinplayer(playername, addr_s, reason)) {
196 actionstream << "Server: Player with the name \"" << playerName << "\" "
197 << "tried to connect from " << addr_s << " "
198 << "but it was disallowed for the following reason: "
199 << reason << std::endl;
200 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_CUSTOM_STRING,
206 infostream << "Server: New connection: \"" << playerName << "\" from "
207 << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
209 // Enforce user limit.
210 // Don't enforce for users that have some admin right
211 if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") &&
212 !checkPriv(playername, "server") &&
213 !checkPriv(playername, "ban") &&
214 !checkPriv(playername, "privs") &&
215 !checkPriv(playername, "password") &&
216 playername != g_settings->get("name")) {
217 actionstream << "Server: " << playername << " tried to join from "
218 << addr_s << ", but there" << " are already max_users="
219 << g_settings->getU16("max_users") << " players." << std::endl;
220 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_TOO_MANY_USERS);
225 Compose auth methods for answer
227 std::string encpwd; // encrypted Password field for the user
228 bool has_auth = m_script->getAuth(playername, &encpwd, NULL);
231 client->chosen_mech = AUTH_MECHANISM_NONE;
234 std::vector<std::string> pwd_components = str_split(encpwd, '#');
235 if (pwd_components.size() == 4) {
236 if (pwd_components[1] == "1") { // 1 means srp
237 auth_mechs |= AUTH_MECHANISM_SRP;
238 client->enc_pwd = encpwd;
240 actionstream << "User " << playername
241 << " tried to log in, but password field"
242 << " was invalid (unknown mechcode)." << std::endl;
243 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
246 } else if (base64_is_valid(encpwd)) {
247 auth_mechs |= AUTH_MECHANISM_LEGACY_PASSWORD;
248 client->enc_pwd = encpwd;
250 actionstream << "User " << playername
251 << " tried to log in, but password field"
252 << " was invalid (invalid base64)." << std::endl;
253 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
257 std::string default_password = g_settings->get("default_password");
258 if (default_password.length() == 0) {
259 auth_mechs |= AUTH_MECHANISM_FIRST_SRP;
261 // Take care of default passwords.
262 client->enc_pwd = getSRPVerifier(playerName, default_password);
263 auth_mechs |= AUTH_MECHANISM_SRP;
268 Answer with a TOCLIENT_HELLO
271 verbosestream << "Sending TOCLIENT_HELLO with auth method field: "
272 << auth_mechs << std::endl;
274 NetworkPacket resp_pkt(TOCLIENT_HELLO, 1 + 4
275 + legacyPlayerNameCasing.size(), pkt->getPeerId());
277 u16 depl_compress_mode = NETPROTO_COMPRESSION_NONE;
278 resp_pkt << depl_serial_v << depl_compress_mode << net_proto_version
279 << auth_mechs << legacyPlayerNameCasing;
283 client->allowed_auth_mechs = auth_mechs;
284 client->setDeployedCompressionMode(depl_compress_mode);
286 m_clients.event(pkt->getPeerId(), CSE_Hello);
289 void Server::handleCommand_Init_Legacy(NetworkPacket* pkt)
291 // [0] u8 SER_FMT_VER_HIGHEST_READ
292 // [1] u8[20] player_name
293 // [21] u8[28] password <--- can be sent without this, from old versions
295 if (pkt->getSize() < 1+PLAYERNAME_SIZE)
298 RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
302 Address address = getPeerAddress(pkt->getPeerId());
303 addr_s = address.serializeString();
305 catch (con::PeerNotFoundException &e) {
307 * no peer for this packet found
308 * most common reason is peer timeout, e.g. peer didn't
309 * respond for some time, your server was overloaded or
312 infostream << "Server::ProcessData(): Canceling: peer "
313 << pkt->getPeerId() << " not found" << std::endl;
317 // If net_proto_version is set, this client has already been handled
318 if (client->getState() > CS_Created) {
319 verbosestream << "Server: Ignoring multiple TOSERVER_INITs from "
320 << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
324 verbosestream << "Server: Got TOSERVER_INIT_LEGACY from " << addr_s << " (peer_id="
325 << pkt->getPeerId() << ")" << std::endl;
327 // Do not allow multiple players in simple singleplayer mode.
328 // This isn't a perfect way to do it, but will suffice for now
329 if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) {
330 infostream << "Server: Not allowing another client (" << addr_s
331 << ") to connect in simple singleplayer mode" << std::endl;
332 DenyAccess_Legacy(pkt->getPeerId(), L"Running in simple singleplayer mode.");
336 // First byte after command is maximum supported
337 // serialization version
342 u8 our_max = SER_FMT_VER_HIGHEST_READ;
343 // Use the highest version supported by both
344 int deployed = std::min(client_max, our_max);
345 // If it's lower than the lowest supported, give up.
346 if (deployed < SER_FMT_VER_LOWEST)
347 deployed = SER_FMT_VER_INVALID;
349 if (deployed == SER_FMT_VER_INVALID) {
350 actionstream << "Server: A mismatched client tried to connect from "
351 << addr_s << std::endl;
352 infostream<<"Server: Cannot negotiate serialization version with "
353 << addr_s << std::endl;
354 DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
355 L"Your client's version is not supported.\n"
356 L"Server version is ")
357 + narrow_to_wide(g_version_string) + L"."
362 client->setPendingSerializationVersion(deployed);
365 Read and check network protocol version
368 u16 min_net_proto_version = 0;
369 if (pkt->getSize() >= 1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2)
370 min_net_proto_version = pkt->getU16(1 + PLAYERNAME_SIZE + PASSWORD_SIZE);
372 // Use same version as minimum and maximum if maximum version field
373 // doesn't exist (backwards compatibility)
374 u16 max_net_proto_version = min_net_proto_version;
375 if (pkt->getSize() >= 1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2 + 2)
376 max_net_proto_version = pkt->getU16(1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2);
378 // Start with client's maximum version
379 u16 net_proto_version = max_net_proto_version;
381 // Figure out a working version if it is possible at all
382 if (max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
383 min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX) {
384 // If maximum is larger than our maximum, go with our maximum
385 if (max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
386 net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
387 // Else go with client's maximum
389 net_proto_version = max_net_proto_version;
392 // The client will send up to date init packet, ignore this one
393 if (net_proto_version >= 25)
396 verbosestream << "Server: " << addr_s << ": Protocol version: min: "
397 << min_net_proto_version << ", max: " << max_net_proto_version
398 << ", chosen: " << net_proto_version << std::endl;
400 client->net_proto_version = net_proto_version;
402 if (net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
403 net_proto_version > SERVER_PROTOCOL_VERSION_MAX) {
404 actionstream << "Server: A mismatched client tried to connect from "
405 << addr_s << std::endl;
406 DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
407 L"Your client's version is not supported.\n"
408 L"Server version is ")
409 + narrow_to_wide(g_version_string) + L",\n"
410 + L"server's PROTOCOL_VERSION is "
411 + narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MIN))
413 + narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MAX))
414 + L", client's PROTOCOL_VERSION is "
415 + narrow_to_wide(itos(min_net_proto_version))
417 + narrow_to_wide(itos(max_net_proto_version))
422 if (g_settings->getBool("strict_protocol_version_checking")) {
423 if (net_proto_version != LATEST_PROTOCOL_VERSION) {
424 actionstream << "Server: A mismatched (strict) client tried to "
425 << "connect from " << addr_s << std::endl;
426 DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
427 L"Your client's version is not supported.\n"
428 L"Server version is ")
429 + narrow_to_wide(g_version_string) + L",\n"
430 + L"server's PROTOCOL_VERSION (strict) is "
431 + narrow_to_wide(itos(LATEST_PROTOCOL_VERSION))
432 + L", client's PROTOCOL_VERSION is "
433 + narrow_to_wide(itos(min_net_proto_version))
435 + narrow_to_wide(itos(max_net_proto_version))
444 char playername[PLAYERNAME_SIZE];
445 unsigned int playername_length = 0;
446 for (; playername_length < PLAYERNAME_SIZE; playername_length++ ) {
447 playername[playername_length] = pkt->getChar(1+playername_length);
448 if (pkt->getChar(1+playername_length) == 0)
452 if (playername_length == PLAYERNAME_SIZE) {
453 actionstream << "Server: Player with name exceeding max length "
454 << "tried to connect from " << addr_s << std::endl;
455 DenyAccess_Legacy(pkt->getPeerId(), L"Name too long");
460 if (playername[0]=='\0') {
461 actionstream << "Server: Player with an empty name "
462 << "tried to connect from " << addr_s << std::endl;
463 DenyAccess_Legacy(pkt->getPeerId(), L"Empty name");
467 if (string_allowed(playername, PLAYERNAME_ALLOWED_CHARS) == false) {
468 actionstream << "Server: Player with an invalid name "
469 << "tried to connect from " << addr_s << std::endl;
470 DenyAccess_Legacy(pkt->getPeerId(), L"Name contains unallowed characters");
474 if (!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0) {
475 actionstream << "Server: Player with the name \"singleplayer\" "
476 << "tried to connect from " << addr_s << std::endl;
477 DenyAccess_Legacy(pkt->getPeerId(), L"Name is not allowed");
483 if (m_script->on_prejoinplayer(playername, addr_s, reason)) {
484 actionstream << "Server: Player with the name \"" << playername << "\" "
485 << "tried to connect from " << addr_s << " "
486 << "but it was disallowed for the following reason: "
487 << reason << std::endl;
488 DenyAccess_Legacy(pkt->getPeerId(), narrow_to_wide(reason.c_str()));
493 infostream<<"Server: New connection: \""<<playername<<"\" from "
494 <<addr_s<<" (peer_id="<<pkt->getPeerId()<<")"<<std::endl;
497 char given_password[PASSWORD_SIZE];
498 if (pkt->getSize() < 1 + PLAYERNAME_SIZE + PASSWORD_SIZE) {
499 // old version - assume blank password
500 given_password[0] = 0;
503 for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
504 given_password[i] = pkt->getChar(21 + i);
506 given_password[PASSWORD_SIZE - 1] = 0;
509 if (!base64_is_valid(given_password)) {
510 actionstream << "Server: " << playername
511 << " supplied invalid password hash" << std::endl;
512 DenyAccess_Legacy(pkt->getPeerId(), L"Invalid password hash");
516 // Enforce user limit.
517 // Don't enforce for users that have some admin right
518 if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") &&
519 !checkPriv(playername, "server") &&
520 !checkPriv(playername, "ban") &&
521 !checkPriv(playername, "privs") &&
522 !checkPriv(playername, "password") &&
523 playername != g_settings->get("name")) {
524 actionstream << "Server: " << playername << " tried to join, but there"
525 << " are already max_users="
526 << g_settings->getU16("max_users") << " players." << std::endl;
527 DenyAccess_Legacy(pkt->getPeerId(), L"Too many users.");
531 std::string checkpwd; // Password hash to check against
532 bool has_auth = m_script->getAuth(playername, &checkpwd, NULL);
534 // If no authentication info exists for user, create it
536 if (!isSingleplayer() &&
537 g_settings->getBool("disallow_empty_password") &&
538 std::string(given_password) == "") {
539 actionstream << "Server: " << playername
540 << " supplied empty password" << std::endl;
541 DenyAccess_Legacy(pkt->getPeerId(), L"Empty passwords are "
542 L"disallowed. Set a password and try again.");
545 std::string raw_default_password =
546 g_settings->get("default_password");
547 std::string initial_password =
548 translatePassword(playername, raw_default_password);
550 // If default_password is empty, allow any initial password
551 if (raw_default_password.length() == 0)
552 initial_password = given_password;
554 m_script->createAuth(playername, initial_password);
557 has_auth = m_script->getAuth(playername, &checkpwd, NULL);
560 actionstream << "Server: " << playername << " cannot be authenticated"
561 << " (auth handler does not work?)" << std::endl;
562 DenyAccess_Legacy(pkt->getPeerId(), L"Not allowed to login");
566 if (given_password != checkpwd) {
567 actionstream << "Server: " << playername << " supplied wrong password"
569 DenyAccess_Legacy(pkt->getPeerId(), L"Wrong password");
573 RemotePlayer *player =
574 static_cast<RemotePlayer*>(m_env->getPlayer(playername));
576 if (player && player->peer_id != 0) {
577 errorstream << "Server: " << playername << ": Failed to emerge player"
578 << " (player allocated to an another client)" << std::endl;
579 DenyAccess_Legacy(pkt->getPeerId(), L"Another client is connected with this "
580 L"name. If your client closed unexpectedly, try again in "
584 m_clients.setPlayerName(pkt->getPeerId(), playername);
587 Answer with a TOCLIENT_INIT
590 NetworkPacket resp_pkt(TOCLIENT_INIT_LEGACY, 1 + 6 + 8 + 4,
593 resp_pkt << (u8) deployed << (v3s16) floatToInt(v3f(0,0,0), BS)
594 << (u64) m_env->getServerMap().getSeed()
595 << g_settings->getFloat("dedicated_server_step");
598 m_clients.event(pkt->getPeerId(), CSE_InitLegacy);
601 void Server::handleCommand_Init2(NetworkPacket* pkt)
603 verbosestream << "Server: Got TOSERVER_INIT2 from "
604 << pkt->getPeerId() << std::endl;
606 m_clients.event(pkt->getPeerId(), CSE_GotInit2);
607 u16 protocol_version = m_clients.getProtocolVersion(pkt->getPeerId());
610 ///// begin compatibility code
611 PlayerSAO* playersao = NULL;
612 if (protocol_version <= 22) {
613 playersao = StageTwoClientInit(pkt->getPeerId());
615 if (playersao == NULL) {
617 << "TOSERVER_INIT2 stage 2 client init failed for peer "
618 << pkt->getPeerId() << std::endl;
622 ///// end compatibility code
625 Send some initialization data
628 infostream << "Server: Sending content to "
629 << getPlayerName(pkt->getPeerId()) << std::endl;
631 // Send player movement settings
632 SendMovement(pkt->getPeerId());
634 // Send item definitions
635 SendItemDef(pkt->getPeerId(), m_itemdef, protocol_version);
637 // Send node definitions
638 SendNodeDef(pkt->getPeerId(), m_nodedef, protocol_version);
640 m_clients.event(pkt->getPeerId(), CSE_SetDefinitionsSent);
642 // Send media announcement
643 sendMediaAnnouncement(pkt->getPeerId());
645 // Send detached inventories
646 sendDetachedInventories(pkt->getPeerId());
649 u16 time = m_env->getTimeOfDay();
650 float time_speed = g_settings->getFloat("time_speed");
651 SendTimeOfDay(pkt->getPeerId(), time, time_speed);
653 ///// begin compatibility code
654 if (protocol_version <= 22) {
655 m_clients.event(pkt->getPeerId(), CSE_SetClientReady);
656 m_script->on_joinplayer(playersao);
658 ///// end compatibility code
660 // Warnings about protocol version can be issued here
661 if (getClient(pkt->getPeerId())->net_proto_version < LATEST_PROTOCOL_VERSION) {
662 SendChatMessage(pkt->getPeerId(), L"# Server: WARNING: YOUR CLIENT'S "
663 L"VERSION MAY NOT BE FULLY COMPATIBLE WITH THIS SERVER!");
667 void Server::handleCommand_RequestMedia(NetworkPacket* pkt)
669 std::vector<std::string> tosend;
674 infostream << "Sending " << numfiles << " files to "
675 << getPlayerName(pkt->getPeerId()) << std::endl;
676 verbosestream << "TOSERVER_REQUEST_MEDIA: " << std::endl;
678 for (u16 i = 0; i < numfiles; i++) {
683 tosend.push_back(name);
684 verbosestream << "TOSERVER_REQUEST_MEDIA: requested file "
685 << name << std::endl;
688 sendRequestedMedia(pkt->getPeerId(), tosend);
691 void Server::handleCommand_ReceivedMedia(NetworkPacket* pkt)
695 void Server::handleCommand_ClientReady(NetworkPacket* pkt)
697 u16 peer_id = pkt->getPeerId();
698 u16 peer_proto_ver = getClient(peer_id, CS_InitDone)->net_proto_version;
700 // clients <= protocol version 22 did not send ready message,
701 // they're already initialized
702 if (peer_proto_ver <= 22) {
703 infostream << "Client sent message not expected by a "
704 << "client using protocol version <= 22,"
705 << "disconnecting peer_id: " << peer_id << std::endl;
706 m_con.DisconnectPeer(peer_id);
710 PlayerSAO* playersao = StageTwoClientInit(peer_id);
712 if (playersao == NULL) {
714 << "TOSERVER_CLIENT_READY stage 2 client init failed for peer_id: "
715 << peer_id << std::endl;
716 m_con.DisconnectPeer(peer_id);
721 if (pkt->getSize() < 8) {
723 << "TOSERVER_CLIENT_READY client sent inconsistent data, disconnecting peer_id: "
724 << peer_id << std::endl;
725 m_con.DisconnectPeer(peer_id);
729 u8 major_ver, minor_ver, patch_ver, reserved;
730 std::string full_ver;
731 *pkt >> major_ver >> minor_ver >> patch_ver >> reserved >> full_ver;
733 m_clients.setClientVersion(
734 peer_id, major_ver, minor_ver, patch_ver,
737 m_clients.event(peer_id, CSE_SetClientReady);
738 m_script->on_joinplayer(playersao);
741 void Server::handleCommand_GotBlocks(NetworkPacket* pkt)
743 if (pkt->getSize() < 1)
757 RemoteClient *client = getClient(pkt->getPeerId());
759 for (u16 i = 0; i < count; i++) {
760 if ((s16)pkt->getSize() < 1 + (i + 1) * 6)
761 throw con::InvalidIncomingDataException
762 ("GOTBLOCKS length is too short");
771 void Server::handleCommand_PlayerPos(NetworkPacket* pkt)
773 if (pkt->getSize() < 12 + 12 + 4 + 4)
777 s32 f32pitch, f32yaw;
784 f32 pitch = (f32)f32pitch / 100.0;
785 f32 yaw = (f32)f32yaw / 100.0;
788 if (pkt->getSize() >= 12 + 12 + 4 + 4 + 4)
791 v3f position((f32)ps.X / 100.0, (f32)ps.Y / 100.0, (f32)ps.Z / 100.0);
792 v3f speed((f32)ss.X / 100.0, (f32)ss.Y / 100.0, (f32)ss.Z / 100.0);
794 pitch = modulo360f(pitch);
795 yaw = modulo360f(yaw);
797 Player *player = m_env->getPlayer(pkt->getPeerId());
798 if (player == NULL) {
799 errorstream << "Server::ProcessData(): Canceling: "
800 "No player for peer_id=" << pkt->getPeerId()
801 << " disconnecting peer!" << std::endl;
802 m_con.DisconnectPeer(pkt->getPeerId());
806 // If player is dead we don't care of this packet
807 if (player->isDead()) {
808 verbosestream << "TOSERVER_PLAYERPOS: " << player->getName()
809 << " is dead. Ignoring packet";
813 PlayerSAO *playersao = player->getPlayerSAO();
814 if (playersao == NULL) {
815 errorstream << "Server::ProcessData(): Canceling: "
816 "No player object for peer_id=" << pkt->getPeerId()
817 << " disconnecting peer!" << std::endl;
818 m_con.DisconnectPeer(pkt->getPeerId());
822 player->setPosition(position);
823 player->setSpeed(speed);
824 player->setPitch(pitch);
826 player->keyPressed = keyPressed;
827 player->control.up = (keyPressed & 1);
828 player->control.down = (keyPressed & 2);
829 player->control.left = (keyPressed & 4);
830 player->control.right = (keyPressed & 8);
831 player->control.jump = (keyPressed & 16);
832 player->control.aux1 = (keyPressed & 32);
833 player->control.sneak = (keyPressed & 64);
834 player->control.LMB = (keyPressed & 128);
835 player->control.RMB = (keyPressed & 256);
837 if (playersao->checkMovementCheat()) {
839 m_script->on_cheat(playersao, "moved_too_fast");
840 SendMovePlayer(pkt->getPeerId());
844 void Server::handleCommand_DeletedBlocks(NetworkPacket* pkt)
846 if (pkt->getSize() < 1)
860 RemoteClient *client = getClient(pkt->getPeerId());
862 for (u16 i = 0; i < count; i++) {
863 if ((s16)pkt->getSize() < 1 + (i + 1) * 6)
864 throw con::InvalidIncomingDataException
865 ("DELETEDBLOCKS length is too short");
869 client->SetBlockNotSent(p);
873 void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
875 Player *player = m_env->getPlayer(pkt->getPeerId());
876 if (player == NULL) {
877 errorstream << "Server::ProcessData(): Canceling: "
878 "No player for peer_id=" << pkt->getPeerId()
879 << " disconnecting peer!" << std::endl;
880 m_con.DisconnectPeer(pkt->getPeerId());
884 PlayerSAO *playersao = player->getPlayerSAO();
885 if (playersao == NULL) {
886 errorstream << "Server::ProcessData(): Canceling: "
887 "No player object for peer_id=" << pkt->getPeerId()
888 << " disconnecting peer!" << std::endl;
889 m_con.DisconnectPeer(pkt->getPeerId());
893 // Strip command and create a stream
894 std::string datastring(pkt->getString(0), pkt->getSize());
895 verbosestream << "TOSERVER_INVENTORY_ACTION: data=" << datastring
897 std::istringstream is(datastring, std::ios_base::binary);
899 InventoryAction *a = InventoryAction::deSerialize(is);
901 infostream << "TOSERVER_INVENTORY_ACTION: "
902 << "InventoryAction::deSerialize() returned NULL"
907 // If something goes wrong, this player is to blame
908 RollbackScopeActor rollback_scope(m_rollback,
909 std::string("player:")+player->getName());
912 Note: Always set inventory not sent, to repair cases
913 where the client made a bad prediction.
917 Handle restrictions and special cases of the move action
919 if (a->getType() == IACTION_MOVE) {
920 IMoveAction *ma = (IMoveAction*)a;
922 ma->from_inv.applyCurrentPlayer(player->getName());
923 ma->to_inv.applyCurrentPlayer(player->getName());
925 setInventoryModified(ma->from_inv, false);
926 setInventoryModified(ma->to_inv, false);
928 bool from_inv_is_current_player =
929 (ma->from_inv.type == InventoryLocation::PLAYER) &&
930 (ma->from_inv.name == player->getName());
932 bool to_inv_is_current_player =
933 (ma->to_inv.type == InventoryLocation::PLAYER) &&
934 (ma->to_inv.name == player->getName());
937 Disable moving items out of craftpreview
939 if (ma->from_list == "craftpreview") {
940 infostream << "Ignoring IMoveAction from "
941 << (ma->from_inv.dump()) << ":" << ma->from_list
942 << " to " << (ma->to_inv.dump()) << ":" << ma->to_list
943 << " because src is " << ma->from_list << std::endl;
949 Disable moving items into craftresult and craftpreview
951 if (ma->to_list == "craftpreview" || ma->to_list == "craftresult") {
952 infostream << "Ignoring IMoveAction from "
953 << (ma->from_inv.dump()) << ":" << ma->from_list
954 << " to " << (ma->to_inv.dump()) << ":" << ma->to_list
955 << " because dst is " << ma->to_list << std::endl;
960 // Disallow moving items in elsewhere than player's inventory
961 // if not allowed to interact
962 if (!checkPriv(player->getName(), "interact") &&
963 (!from_inv_is_current_player ||
964 !to_inv_is_current_player)) {
965 infostream << "Cannot move outside of player's inventory: "
966 << "No interact privilege" << std::endl;
972 Handle restrictions and special cases of the drop action
974 else if (a->getType() == IACTION_DROP) {
975 IDropAction *da = (IDropAction*)a;
977 da->from_inv.applyCurrentPlayer(player->getName());
979 setInventoryModified(da->from_inv, false);
982 Disable dropping items out of craftpreview
984 if (da->from_list == "craftpreview") {
985 infostream << "Ignoring IDropAction from "
986 << (da->from_inv.dump()) << ":" << da->from_list
987 << " because src is " << da->from_list << std::endl;
992 // Disallow dropping items if not allowed to interact
993 if (!checkPriv(player->getName(), "interact")) {
999 Handle restrictions and special cases of the craft action
1001 else if (a->getType() == IACTION_CRAFT) {
1002 ICraftAction *ca = (ICraftAction*)a;
1004 ca->craft_inv.applyCurrentPlayer(player->getName());
1006 setInventoryModified(ca->craft_inv, false);
1008 //bool craft_inv_is_current_player =
1009 // (ca->craft_inv.type == InventoryLocation::PLAYER) &&
1010 // (ca->craft_inv.name == player->getName());
1012 // Disallow crafting if not allowed to interact
1013 if (!checkPriv(player->getName(), "interact")) {
1014 infostream << "Cannot craft: "
1015 << "No interact privilege" << std::endl;
1022 a->apply(this, playersao, this);
1026 SendInventory(playersao);
1029 void Server::handleCommand_ChatMessage(NetworkPacket* pkt)
1039 std::wstring message;
1040 for (u16 i = 0; i < len; i++) {
1044 message += (wchar_t)tmp_wchar;
1047 Player *player = m_env->getPlayer(pkt->getPeerId());
1048 if (player == NULL) {
1049 errorstream << "Server::ProcessData(): Canceling: "
1050 "No player for peer_id=" << pkt->getPeerId()
1051 << " disconnecting peer!" << std::endl;
1052 m_con.DisconnectPeer(pkt->getPeerId());
1056 // If something goes wrong, this player is to blame
1057 RollbackScopeActor rollback_scope(m_rollback,
1058 std::string("player:")+player->getName());
1060 // Get player name of this client
1061 std::wstring name = narrow_to_wide(player->getName());
1064 bool ate = m_script->on_chat_message(player->getName(),
1065 wide_to_narrow(message));
1066 // If script ate the message, don't proceed
1070 // Line to send to players
1072 // Whether to send to the player that sent the line
1073 bool send_to_sender_only = false;
1075 // Commands are implemented in Lua, so only catch invalid
1076 // commands that were not "eaten" and send an error back
1077 if (message[0] == L'/') {
1078 message = message.substr(1);
1079 send_to_sender_only = true;
1080 if (message.length() == 0)
1081 line += L"-!- Empty command";
1083 line += L"-!- Invalid command: " + str_split(message, L' ')[0];
1086 if (checkPriv(player->getName(), "shout")) {
1092 line += L"-!- You don't have permission to shout.";
1093 send_to_sender_only = true;
1100 Send the message to sender
1102 if (send_to_sender_only) {
1103 SendChatMessage(pkt->getPeerId(), line);
1106 Send the message to others
1109 actionstream << "CHAT: " << wide_to_narrow(line)<<std::endl;
1111 std::vector<u16> clients = m_clients.getClientIDs();
1113 for (std::vector<u16>::iterator i = clients.begin();
1114 i != clients.end(); ++i) {
1115 if (*i != pkt->getPeerId())
1116 SendChatMessage(*i, line);
1122 void Server::handleCommand_Damage(NetworkPacket* pkt)
1128 Player *player = m_env->getPlayer(pkt->getPeerId());
1129 if (player == NULL) {
1130 errorstream << "Server::ProcessData(): Canceling: "
1131 "No player for peer_id=" << pkt->getPeerId()
1132 << " disconnecting peer!" << std::endl;
1133 m_con.DisconnectPeer(pkt->getPeerId());
1137 PlayerSAO *playersao = player->getPlayerSAO();
1138 if (playersao == NULL) {
1139 errorstream << "Server::ProcessData(): Canceling: "
1140 "No player object for peer_id=" << pkt->getPeerId()
1141 << " disconnecting peer!" << std::endl;
1142 m_con.DisconnectPeer(pkt->getPeerId());
1146 if (g_settings->getBool("enable_damage")) {
1147 actionstream << player->getName() << " damaged by "
1148 << (int)damage << " hp at " << PP(player->getPosition() / BS)
1151 playersao->setHP(playersao->getHP() - damage);
1152 SendPlayerHPOrDie(playersao->getPeerID(), playersao->getHP() == 0);
1156 void Server::handleCommand_Breath(NetworkPacket* pkt)
1162 Player *player = m_env->getPlayer(pkt->getPeerId());
1163 if (player == NULL) {
1164 errorstream << "Server::ProcessData(): Canceling: "
1165 "No player for peer_id=" << pkt->getPeerId()
1166 << " disconnecting peer!" << std::endl;
1167 m_con.DisconnectPeer(pkt->getPeerId());
1172 * If player is dead, we don't need to update the breath
1175 if (player->isDead()) {
1176 verbosestream << "TOSERVER_BREATH: " << player->getName()
1177 << " is dead. Ignoring packet";
1182 PlayerSAO *playersao = player->getPlayerSAO();
1183 if (playersao == NULL) {
1184 errorstream << "Server::ProcessData(): Canceling: "
1185 "No player object for peer_id=" << pkt->getPeerId()
1186 << " disconnecting peer!" << std::endl;
1187 m_con.DisconnectPeer(pkt->getPeerId());
1191 playersao->setBreath(breath);
1192 SendPlayerBreath(pkt->getPeerId());
1195 void Server::handleCommand_Password(NetworkPacket* pkt)
1197 if (pkt->getSize() != PASSWORD_SIZE * 2)
1203 // Deny for clients using the new protocol
1204 RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
1205 if (client->net_proto_version >= 25) {
1206 infostream << "Server::handleCommand_Password(): Denying change: "
1207 << " Client protocol version for peer_id=" << pkt->getPeerId()
1208 << " too new!" << std::endl;
1212 for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
1213 char c = pkt->getChar(i);
1219 for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
1220 char c = pkt->getChar(PASSWORD_SIZE + i);
1226 Player *player = m_env->getPlayer(pkt->getPeerId());
1227 if (player == NULL) {
1228 errorstream << "Server::ProcessData(): Canceling: "
1229 "No player for peer_id=" << pkt->getPeerId()
1230 << " disconnecting peer!" << std::endl;
1231 m_con.DisconnectPeer(pkt->getPeerId());
1235 if (!base64_is_valid(newpwd)) {
1236 infostream<<"Server: " << player->getName() <<
1237 " supplied invalid password hash" << std::endl;
1238 // Wrong old password supplied!!
1239 SendChatMessage(pkt->getPeerId(), L"Invalid new password hash supplied. Password NOT changed.");
1243 infostream << "Server: Client requests a password change from "
1244 << "'" << oldpwd << "' to '" << newpwd << "'" << std::endl;
1246 std::string playername = player->getName();
1248 std::string checkpwd;
1249 m_script->getAuth(playername, &checkpwd, NULL);
1251 if (oldpwd != checkpwd) {
1252 infostream << "Server: invalid old password" << std::endl;
1253 // Wrong old password supplied!!
1254 SendChatMessage(pkt->getPeerId(), L"Invalid old password supplied. Password NOT changed.");
1258 bool success = m_script->setPassword(playername, newpwd);
1260 actionstream << player->getName() << " changes password" << std::endl;
1261 SendChatMessage(pkt->getPeerId(), L"Password change successful.");
1263 actionstream << player->getName() << " tries to change password but "
1264 << "it fails" << std::endl;
1265 SendChatMessage(pkt->getPeerId(), L"Password change failed or unavailable.");
1269 void Server::handleCommand_PlayerItem(NetworkPacket* pkt)
1271 if (pkt->getSize() < 2)
1274 Player *player = m_env->getPlayer(pkt->getPeerId());
1275 if (player == NULL) {
1276 errorstream << "Server::ProcessData(): Canceling: "
1277 "No player for peer_id=" << pkt->getPeerId()
1278 << " disconnecting peer!" << std::endl;
1279 m_con.DisconnectPeer(pkt->getPeerId());
1283 PlayerSAO *playersao = player->getPlayerSAO();
1284 if (playersao == NULL) {
1285 errorstream << "Server::ProcessData(): Canceling: "
1286 "No player object for peer_id=" << pkt->getPeerId()
1287 << " disconnecting peer!" << std::endl;
1288 m_con.DisconnectPeer(pkt->getPeerId());
1296 playersao->setWieldIndex(item);
1299 void Server::handleCommand_Respawn(NetworkPacket* pkt)
1301 Player *player = m_env->getPlayer(pkt->getPeerId());
1302 if (player == NULL) {
1303 errorstream << "Server::ProcessData(): Canceling: "
1304 "No player for peer_id=" << pkt->getPeerId()
1305 << " disconnecting peer!" << std::endl;
1306 m_con.DisconnectPeer(pkt->getPeerId());
1310 if (!player->isDead())
1313 RespawnPlayer(pkt->getPeerId());
1315 actionstream << player->getName() << " respawns at "
1316 << PP(player->getPosition()/BS) << std::endl;
1318 // ActiveObject is added to environment in AsyncRunStep after
1319 // the previous addition has been successfully removed
1322 void Server::handleCommand_Interact(NetworkPacket* pkt)
1324 std::string datastring(pkt->getString(0), pkt->getSize());
1325 std::istringstream is(datastring, std::ios_base::binary);
1331 [5] u32 length of the next item
1332 [9] serialized PointedThing
1334 0: start digging (from undersurface) or use
1335 1: stop digging (all parameters ignored)
1336 2: digging completed
1337 3: place block or item (to abovesurface)
1340 u8 action = readU8(is);
1341 u16 item_i = readU16(is);
1342 std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
1343 PointedThing pointed;
1344 pointed.deSerialize(tmp_is);
1346 verbosestream << "TOSERVER_INTERACT: action=" << (int)action << ", item="
1347 << item_i << ", pointed=" << pointed.dump() << std::endl;
1349 Player *player = m_env->getPlayer(pkt->getPeerId());
1350 if (player == NULL) {
1351 errorstream << "Server::ProcessData(): Canceling: "
1352 "No player for peer_id=" << pkt->getPeerId()
1353 << " disconnecting peer!" << std::endl;
1354 m_con.DisconnectPeer(pkt->getPeerId());
1358 PlayerSAO *playersao = player->getPlayerSAO();
1359 if (playersao == NULL) {
1360 errorstream << "Server::ProcessData(): Canceling: "
1361 "No player object for peer_id=" << pkt->getPeerId()
1362 << " disconnecting peer!" << std::endl;
1363 m_con.DisconnectPeer(pkt->getPeerId());
1367 if (player->isDead()) {
1368 verbosestream << "TOSERVER_INTERACT: " << player->getName()
1369 << " is dead. Ignoring packet";
1373 v3f player_pos = playersao->getLastGoodPosition();
1375 // Update wielded item
1376 playersao->setWieldIndex(item_i);
1378 // Get pointed to node (undefined if not POINTEDTYPE_NODE)
1379 v3s16 p_under = pointed.node_undersurface;
1380 v3s16 p_above = pointed.node_abovesurface;
1382 // Get pointed to object (NULL if not POINTEDTYPE_OBJECT)
1383 ServerActiveObject *pointed_object = NULL;
1384 if (pointed.type == POINTEDTHING_OBJECT) {
1385 pointed_object = m_env->getActiveObject(pointed.object_id);
1386 if (pointed_object == NULL) {
1387 verbosestream << "TOSERVER_INTERACT: "
1388 "pointed object is NULL" << std::endl;
1394 v3f pointed_pos_under = player_pos;
1395 v3f pointed_pos_above = player_pos;
1396 if (pointed.type == POINTEDTHING_NODE) {
1397 pointed_pos_under = intToFloat(p_under, BS);
1398 pointed_pos_above = intToFloat(p_above, BS);
1400 else if (pointed.type == POINTEDTHING_OBJECT) {
1401 pointed_pos_under = pointed_object->getBasePosition();
1402 pointed_pos_above = pointed_pos_under;
1406 Check that target is reasonably close
1407 (only when digging or placing things)
1409 if (action == 0 || action == 2 || action == 3) {
1410 float d = player_pos.getDistanceFrom(pointed_pos_under);
1411 float max_d = BS * 14; // Just some large enough value
1413 actionstream << "Player " << player->getName()
1414 << " tried to access " << pointed.dump()
1415 << " from too far: "
1416 << "d=" << d <<", max_d=" << max_d
1417 << ". ignoring." << std::endl;
1418 // Re-send block to revert change on client-side
1419 RemoteClient *client = getClient(pkt->getPeerId());
1420 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1421 client->SetBlockNotSent(blockpos);
1423 m_script->on_cheat(playersao, "interacted_too_far");
1430 Make sure the player is allowed to do it
1432 if (!checkPriv(player->getName(), "interact")) {
1433 actionstream<<player->getName()<<" attempted to interact with "
1434 <<pointed.dump()<<" without 'interact' privilege"
1436 // Re-send block to revert change on client-side
1437 RemoteClient *client = getClient(pkt->getPeerId());
1438 // Digging completed -> under
1440 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1441 client->SetBlockNotSent(blockpos);
1443 // Placement -> above
1445 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
1446 client->SetBlockNotSent(blockpos);
1452 If something goes wrong, this player is to blame
1454 RollbackScopeActor rollback_scope(m_rollback,
1455 std::string("player:")+player->getName());
1458 0: start digging or punch object
1461 if (pointed.type == POINTEDTHING_NODE) {
1463 NOTE: This can be used in the future to check if
1464 somebody is cheating, by checking the timing.
1466 MapNode n(CONTENT_IGNORE);
1468 n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
1470 n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
1473 infostream << "Server: Not punching: Node not found."
1474 << " Adding block to emerge queue."
1476 m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false);
1479 if (n.getContent() != CONTENT_IGNORE)
1480 m_script->node_on_punch(p_under, n, playersao, pointed);
1482 playersao->noCheatDigStart(p_under);
1484 else if (pointed.type == POINTEDTHING_OBJECT) {
1485 // Skip if object has been removed
1486 if (pointed_object->m_removed)
1489 actionstream<<player->getName()<<" punches object "
1490 <<pointed.object_id<<": "
1491 <<pointed_object->getDescription()<<std::endl;
1493 ItemStack punchitem = playersao->getWieldedItem();
1494 ToolCapabilities toolcap =
1495 punchitem.getToolCapabilities(m_itemdef);
1496 v3f dir = (pointed_object->getBasePosition() -
1497 (player->getPosition() + player->getEyeOffset())
1499 float time_from_last_punch =
1500 playersao->resetTimeFromLastPunch();
1502 s16 src_original_hp = pointed_object->getHP();
1503 s16 dst_origin_hp = playersao->getHP();
1505 pointed_object->punch(dir, &toolcap, playersao,
1506 time_from_last_punch);
1508 // If the object is a player and its HP changed
1509 if (src_original_hp != pointed_object->getHP() &&
1510 pointed_object->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
1511 SendPlayerHPOrDie(((PlayerSAO*)pointed_object)->getPeerID(),
1512 pointed_object->getHP() == 0);
1515 // If the puncher is a player and its HP changed
1516 if (dst_origin_hp != playersao->getHP()) {
1517 SendPlayerHPOrDie(playersao->getPeerID(), playersao->getHP() == 0);
1526 else if (action == 1) {
1530 2: Digging completed
1532 else if (action == 2) {
1533 // Only digging of nodes
1534 if (pointed.type == POINTEDTHING_NODE) {
1536 MapNode n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
1538 infostream << "Server: Not finishing digging: Node not found."
1539 << " Adding block to emerge queue."
1541 m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false);
1544 /* Cheat prevention */
1545 bool is_valid_dig = true;
1546 if (!isSingleplayer() && !g_settings->getBool("disable_anticheat")) {
1547 v3s16 nocheat_p = playersao->getNoCheatDigPos();
1548 float nocheat_t = playersao->getNoCheatDigTime();
1549 playersao->noCheatDigEnd();
1550 // If player didn't start digging this, ignore dig
1551 if (nocheat_p != p_under) {
1552 infostream << "Server: NoCheat: " << player->getName()
1553 << " started digging "
1554 << PP(nocheat_p) << " and completed digging "
1555 << PP(p_under) << "; not digging." << std::endl;
1556 is_valid_dig = false;
1558 m_script->on_cheat(playersao, "finished_unknown_dig");
1560 // Get player's wielded item
1561 ItemStack playeritem;
1562 InventoryList *mlist = playersao->getInventory()->getList("main");
1564 playeritem = mlist->getItem(playersao->getWieldIndex());
1565 ToolCapabilities playeritem_toolcap =
1566 playeritem.getToolCapabilities(m_itemdef);
1567 // Get diggability and expected digging time
1568 DigParams params = getDigParams(m_nodedef->get(n).groups,
1569 &playeritem_toolcap);
1570 // If can't dig, try hand
1571 if (!params.diggable) {
1572 const ItemDefinition &hand = m_itemdef->get("");
1573 const ToolCapabilities *tp = hand.tool_capabilities;
1575 params = getDigParams(m_nodedef->get(n).groups, tp);
1577 // If can't dig, ignore dig
1578 if (!params.diggable) {
1579 infostream << "Server: NoCheat: " << player->getName()
1580 << " completed digging " << PP(p_under)
1581 << ", which is not diggable with tool. not digging."
1583 is_valid_dig = false;
1585 m_script->on_cheat(playersao, "dug_unbreakable");
1587 // Check digging time
1588 // If already invalidated, we don't have to
1589 if (!is_valid_dig) {
1590 // Well not our problem then
1592 // Clean and long dig
1593 else if (params.time > 2.0 && nocheat_t * 1.2 > params.time) {
1594 // All is good, but grab time from pool; don't care if
1595 // it's actually available
1596 playersao->getDigPool().grab(params.time);
1598 // Short or laggy dig
1599 // Try getting the time from pool
1600 else if (playersao->getDigPool().grab(params.time)) {
1605 infostream << "Server: NoCheat: " << player->getName()
1606 << " completed digging " << PP(p_under)
1607 << "too fast; not digging." << std::endl;
1608 is_valid_dig = false;
1610 m_script->on_cheat(playersao, "dug_too_fast");
1614 /* Actually dig node */
1616 if (is_valid_dig && n.getContent() != CONTENT_IGNORE)
1617 m_script->node_on_dig(p_under, n, playersao);
1619 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1620 RemoteClient *client = getClient(pkt->getPeerId());
1621 // Send unusual result (that is, node not being removed)
1622 if (m_env->getMap().getNodeNoEx(p_under).getContent() != CONTENT_AIR) {
1623 // Re-send block to revert change on client-side
1624 client->SetBlockNotSent(blockpos);
1627 client->ResendBlockIfOnWire(blockpos);
1633 3: place block or right-click object
1635 else if (action == 3) {
1636 ItemStack item = playersao->getWieldedItem();
1638 // Reset build time counter
1639 if (pointed.type == POINTEDTHING_NODE &&
1640 item.getDefinition(m_itemdef).type == ITEM_NODE)
1641 getClient(pkt->getPeerId())->m_time_from_building = 0.0;
1643 if (pointed.type == POINTEDTHING_OBJECT) {
1644 // Right click object
1646 // Skip if object has been removed
1647 if (pointed_object->m_removed)
1650 actionstream << player->getName() << " right-clicks object "
1651 << pointed.object_id << ": "
1652 << pointed_object->getDescription() << std::endl;
1655 pointed_object->rightClick(playersao);
1657 else if (m_script->item_OnPlace(
1658 item, playersao, pointed)) {
1659 // Placement was handled in lua
1661 // Apply returned ItemStack
1662 if (playersao->setWieldedItem(item)) {
1663 SendInventory(playersao);
1667 // If item has node placement prediction, always send the
1668 // blocks to make sure the client knows what exactly happened
1669 RemoteClient *client = getClient(pkt->getPeerId());
1670 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
1671 v3s16 blockpos2 = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
1672 if (item.getDefinition(m_itemdef).node_placement_prediction != "") {
1673 client->SetBlockNotSent(blockpos);
1674 if (blockpos2 != blockpos) {
1675 client->SetBlockNotSent(blockpos2);
1679 client->ResendBlockIfOnWire(blockpos);
1680 if (blockpos2 != blockpos) {
1681 client->ResendBlockIfOnWire(blockpos2);
1689 else if (action == 4) {
1690 ItemStack item = playersao->getWieldedItem();
1692 actionstream << player->getName() << " uses " << item.name
1693 << ", pointing at " << pointed.dump() << std::endl;
1695 if (m_script->item_OnUse(
1696 item, playersao, pointed)) {
1697 // Apply returned ItemStack
1698 if (playersao->setWieldedItem(item)) {
1699 SendInventory(playersao);
1707 Catch invalid actions
1710 infostream << "WARNING: Server: Invalid action "
1711 << action << std::endl;
1715 void Server::handleCommand_RemovedSounds(NetworkPacket* pkt)
1719 for (u16 k = 0; k < num; k++) {
1724 std::map<s32, ServerPlayingSound>::iterator i =
1725 m_playing_sounds.find(id);
1727 if (i == m_playing_sounds.end())
1730 ServerPlayingSound &psound = i->second;
1731 psound.clients.erase(pkt->getPeerId());
1732 if (psound.clients.empty())
1733 m_playing_sounds.erase(i++);
1737 void Server::handleCommand_NodeMetaFields(NetworkPacket* pkt)
1740 std::string formname;
1743 *pkt >> p >> formname >> num;
1745 std::map<std::string, std::string> fields;
1746 for (u16 k = 0; k < num; k++) {
1747 std::string fieldname;
1749 fields[fieldname] = pkt->readLongString();
1752 Player *player = m_env->getPlayer(pkt->getPeerId());
1753 if (player == NULL) {
1754 errorstream << "Server::ProcessData(): Canceling: "
1755 "No player for peer_id=" << pkt->getPeerId()
1756 << " disconnecting peer!" << std::endl;
1757 m_con.DisconnectPeer(pkt->getPeerId());
1761 PlayerSAO *playersao = player->getPlayerSAO();
1762 if (playersao == NULL) {
1763 errorstream << "Server::ProcessData(): Canceling: "
1764 "No player object for peer_id=" << pkt->getPeerId()
1765 << " disconnecting peer!" << std::endl;
1766 m_con.DisconnectPeer(pkt->getPeerId());
1770 // If something goes wrong, this player is to blame
1771 RollbackScopeActor rollback_scope(m_rollback,
1772 std::string("player:")+player->getName());
1774 // Check the target node for rollback data; leave others unnoticed
1775 RollbackNode rn_old(&m_env->getMap(), p, this);
1777 m_script->node_on_receive_fields(p, formname, fields, playersao);
1779 // Report rollback data
1780 RollbackNode rn_new(&m_env->getMap(), p, this);
1781 if (rollback() && rn_new != rn_old) {
1782 RollbackAction action;
1783 action.setSetNode(p, rn_old, rn_new);
1784 rollback()->reportAction(action);
1788 void Server::handleCommand_InventoryFields(NetworkPacket* pkt)
1790 std::string formname;
1793 *pkt >> formname >> num;
1795 std::map<std::string, std::string> fields;
1796 for (u16 k = 0; k < num; k++) {
1797 std::string fieldname;
1799 fields[fieldname] = pkt->readLongString();
1802 Player *player = m_env->getPlayer(pkt->getPeerId());
1803 if (player == NULL) {
1804 errorstream << "Server::ProcessData(): Canceling: "
1805 "No player for peer_id=" << pkt->getPeerId()
1806 << " disconnecting peer!" << std::endl;
1807 m_con.DisconnectPeer(pkt->getPeerId());
1811 PlayerSAO *playersao = player->getPlayerSAO();
1812 if (playersao == NULL) {
1813 errorstream << "Server::ProcessData(): Canceling: "
1814 "No player object for peer_id=" << pkt->getPeerId()
1815 << " disconnecting peer!" << std::endl;
1816 m_con.DisconnectPeer(pkt->getPeerId());
1820 m_script->on_playerReceiveFields(playersao, formname, fields);
1823 void Server::handleCommand_FirstSrp(NetworkPacket* pkt)
1825 RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid);
1826 ClientState cstate = client->getState();
1828 std::string playername = client->getName();
1831 std::string verification_key;
1833 std::string addr_s = getPeerAddress(pkt->getPeerId()).serializeString();
1836 *pkt >> salt >> verification_key >> is_empty;
1838 verbosestream << "Server: Got TOSERVER_FIRST_SRP from " << addr_s
1839 << ", with is_empty= " << is_empty << std::endl;
1841 // Either this packet is sent because the user is new or to change the password
1842 if (cstate == CS_HelloSent) {
1843 if (!client->isMechAllowed(AUTH_MECHANISM_FIRST_SRP)) {
1844 actionstream << "Server: Client from " << addr_s
1845 << " tried to set password without being "
1846 << "authenticated, or the username being new." << std::endl;
1847 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
1851 if (!isSingleplayer() &&
1852 g_settings->getBool("disallow_empty_password") &&
1854 actionstream << "Server: " << playername
1855 << " supplied empty password from " << addr_s << std::endl;
1856 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_EMPTY_PASSWORD);
1860 std::string initial_ver_key;
1861 std::string raw_default_password = g_settings->get("default_password");
1862 // If default_password is empty, allow any initial password
1863 if (raw_default_password.length() == 0) {
1864 initial_ver_key = encodeSRPVerifier(verification_key, salt);
1866 initial_ver_key = getSRPVerifier(playername, raw_default_password);
1869 m_script->createAuth(playername, initial_ver_key);
1871 acceptAuth(pkt->getPeerId(), false);
1873 if (cstate < CS_SudoMode) {
1874 infostream << "Server::ProcessData(): Ignoring TOSERVER_FIRST_SRP from "
1875 << addr_s << ": " << "Client has wrong state " << cstate << "."
1879 m_clients.event(pkt->getPeerId(), CSE_SudoLeave);
1880 std::string pw_db_field = encodeSRPVerifier(verification_key, salt);
1881 bool success = m_script->setPassword(playername, pw_db_field);
1883 actionstream << playername << " changes password" << std::endl;
1884 SendChatMessage(pkt->getPeerId(), L"Password change successful.");
1886 actionstream << playername << " tries to change password but "
1887 << "it fails" << std::endl;
1888 SendChatMessage(pkt->getPeerId(), L"Password change failed or unavailable.");
1893 void Server::handleCommand_SrpBytesA(NetworkPacket* pkt)
1895 RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid);
1896 ClientState cstate = client->getState();
1898 bool wantSudo = (cstate == CS_Active);
1900 if (!((cstate == CS_HelloSent) || (cstate == CS_Active))) {
1901 actionstream << "Server: got SRP _A packet in wrong state "
1902 << cstate << " from "
1903 << getPeerAddress(pkt->getPeerId()).serializeString()
1904 << ". Ignoring." << std::endl;
1908 if (client->chosen_mech != AUTH_MECHANISM_NONE) {
1909 actionstream << "Server: got SRP _A packet, while auth"
1910 << "is already going on with mech " << client->chosen_mech
1911 << " from " << getPeerAddress(pkt->getPeerId()).serializeString()
1912 << " (wantSudo=" << wantSudo << "). Ignoring." << std::endl;
1914 DenySudoAccess(pkt->getPeerId());
1917 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
1922 std::string bytes_A;
1924 *pkt >> bytes_A >> based_on;
1926 infostream << "Server: TOSERVER_SRP_BYTES_A received with "
1927 << "based_on=" << int(based_on) << " and len_A="
1928 << bytes_A.length() << "." << std::endl;
1930 AuthMechanism chosen = (based_on == 0) ?
1931 AUTH_MECHANISM_LEGACY_PASSWORD : AUTH_MECHANISM_SRP;
1934 if (!client->isSudoMechAllowed(chosen)) {
1935 actionstream << "Server: Player \"" << client->getName()
1936 << "\" at " << getPeerAddress(pkt->getPeerId()).serializeString()
1937 << " tried to change password using unallowed mech "
1938 << chosen << "." << std::endl;
1939 DenySudoAccess(pkt->getPeerId());
1943 if (!client->isMechAllowed(chosen)) {
1944 actionstream << "Server: Client tried to authenticate from "
1945 << getPeerAddress(pkt->getPeerId()).serializeString()
1946 << " using unallowed mech " << chosen << "." << std::endl;
1947 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
1952 client->chosen_mech = chosen;
1954 std::string bytes_s;
1955 std::string bytes_v;
1957 if (based_on == 0) {
1958 char *p_bytes_s = 0;
1960 char *p_bytes_v = 0;
1962 getSRPVerifier(client->getName(), client->enc_pwd,
1964 &p_bytes_v, &len_v);
1965 bytes_s = std::string(p_bytes_s, len_s);
1966 bytes_v = std::string(p_bytes_v, len_v);
1969 } else if (!decodeSRPVerifier(client->enc_pwd, &bytes_s, &bytes_v)) {
1970 // Non-base64 errors should have been catched in the init handler
1971 actionstream << "Server: User " << client->getName()
1972 << " tried to log in, but srp verifier field"
1973 << " was invalid (most likely invalid base64)." << std::endl;
1974 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
1981 client->auth_data = srp_verifier_new(SRP_SHA256, SRP_NG_2048,
1982 client->getName().c_str(),
1983 (const unsigned char *) bytes_s.c_str(), bytes_s.size(),
1984 (const unsigned char *) bytes_v.c_str(), bytes_v.size(),
1985 (const unsigned char *) bytes_A.c_str(), bytes_A.size(),
1987 (unsigned char **) &bytes_B, &len_B, NULL, NULL);
1990 actionstream << "Server: User " << client->getName()
1991 << " tried to log in, SRP-6a safety check violated in _A handler."
1994 DenySudoAccess(pkt->getPeerId());
1997 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
2002 NetworkPacket resp_pkt(TOCLIENT_SRP_BYTES_S_B, 0, pkt->getPeerId());
2003 resp_pkt << bytes_s << std::string(bytes_B, len_B);
2007 void Server::handleCommand_SrpBytesM(NetworkPacket* pkt)
2009 RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid);
2010 ClientState cstate = client->getState();
2012 bool wantSudo = (cstate == CS_Active);
2014 verbosestream << "Server: Recieved TOCLIENT_SRP_BYTES_M." << std::endl;
2016 if (!((cstate == CS_HelloSent) || (cstate == CS_Active))) {
2017 actionstream << "Server: got SRP _M packet in wrong state "
2018 << cstate << " from "
2019 << getPeerAddress(pkt->getPeerId()).serializeString()
2020 << ". Ignoring." << std::endl;
2024 if ((client->chosen_mech != AUTH_MECHANISM_SRP)
2025 && (client->chosen_mech != AUTH_MECHANISM_LEGACY_PASSWORD)) {
2026 actionstream << "Server: got SRP _M packet, while auth"
2027 << "is going on with mech " << client->chosen_mech
2028 << " from " << getPeerAddress(pkt->getPeerId()).serializeString()
2029 << " (wantSudo=" << wantSudo << "). Denying." << std::endl;
2031 DenySudoAccess(pkt->getPeerId());
2034 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
2039 std::string bytes_M;
2042 if (srp_verifier_get_session_key_length((SRPVerifier *) client->auth_data)
2043 != bytes_M.size()) {
2044 actionstream << "Server: User " << client->getName()
2045 << " at " << getPeerAddress(pkt->getPeerId()).serializeString()
2046 << " sent bytes_M with invalid length " << bytes_M.size() << std::endl;
2047 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
2051 unsigned char *bytes_HAMK = 0;
2053 srp_verifier_verify_session((SRPVerifier *) client->auth_data,
2054 (unsigned char *)bytes_M.c_str(), &bytes_HAMK);
2058 actionstream << "Server: User " << client->getName()
2059 << " at " << getPeerAddress(pkt->getPeerId()).serializeString()
2060 << " tried to change their password, but supplied wrong"
2061 << " (SRP) password for authentication." << std::endl;
2062 DenySudoAccess(pkt->getPeerId());
2065 actionstream << "Server: User " << client->getName()
2066 << " at " << getPeerAddress(pkt->getPeerId()).serializeString()
2067 << " supplied wrong (SRP) password from address "
2068 << getPeerAddress(pkt->getPeerId()).serializeString()
2069 << "." << std::endl;
2070 DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_PASSWORD);
2075 acceptAuth(pkt->getPeerId(), wantSudo);