3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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.
26 #include "serialization.h" // For SER_FMT_VER_INVALID
27 #include "content/mods.h"
28 #include "inventorymanager.h"
29 #include "content/subgames.h"
30 #include "tileanimation.h" // struct TileAnimationParams
31 #include "network/peerhandler.h"
32 #include "network/address.h"
33 #include "util/numeric.h"
34 #include "util/thread.h"
35 #include "util/basic_macros.h"
36 #include "serverenvironment.h"
37 #include "clientiface.h"
38 #include "chatmessage.h"
47 class IWritableItemDefManager;
49 class IWritableCraftDefManager;
56 struct PlayerHPChangeReason;
57 class IRollbackManager;
58 struct RollbackAction;
60 class ServerScripting;
61 class ServerEnvironment;
62 struct SimpleSoundSpec;
65 class ServerModManager;
67 enum ClientDeletionReason {
76 std::string sha1_digest;
78 MediaInfo(const std::string &path_="",
79 const std::string &sha1_digest_=""):
81 sha1_digest(sha1_digest_)
86 struct ServerSoundParams
97 float max_hear_distance = 32 * BS;
100 std::string to_player = "";
102 v3f getPos(ServerEnvironment *env, bool *pos_exists) const;
105 struct ServerPlayingSound
107 ServerSoundParams params;
108 SimpleSoundSpec spec;
109 std::unordered_set<session_t> clients; // peer ids
112 class Server : public con::PeerHandler, public MapEventReceiver,
113 public InventoryManager, public IGameDef
117 NOTE: Every public method should be thread-safe
121 const std::string &path_world,
122 const SubgameSpec &gamespec,
123 bool simple_singleplayer_mode,
126 ChatInterface *iface = nullptr
129 DISABLE_CLASS_COPY(Server);
134 // This is mainly a way to pass the time to the server.
135 // Actual processing is done in an another thread.
136 void step(float dtime);
137 // This is run by ServerThread and does the actual processing
138 void AsyncRunStep(bool initial_step=false);
140 PlayerSAO* StageTwoClientInit(session_t peer_id);
146 void handleCommand(NetworkPacket* pkt);
148 void handleCommand_Null(NetworkPacket* pkt) {};
149 void handleCommand_Deprecated(NetworkPacket* pkt);
150 void handleCommand_Init(NetworkPacket* pkt);
151 void handleCommand_Init2(NetworkPacket* pkt);
152 void handleCommand_ModChannelJoin(NetworkPacket *pkt);
153 void handleCommand_ModChannelLeave(NetworkPacket *pkt);
154 void handleCommand_ModChannelMsg(NetworkPacket *pkt);
155 void handleCommand_RequestMedia(NetworkPacket* pkt);
156 void handleCommand_ClientReady(NetworkPacket* pkt);
157 void handleCommand_GotBlocks(NetworkPacket* pkt);
158 void handleCommand_PlayerPos(NetworkPacket* pkt);
159 void handleCommand_DeletedBlocks(NetworkPacket* pkt);
160 void handleCommand_InventoryAction(NetworkPacket* pkt);
161 void handleCommand_ChatMessage(NetworkPacket* pkt);
162 void handleCommand_Damage(NetworkPacket* pkt);
163 void handleCommand_Password(NetworkPacket* pkt);
164 void handleCommand_PlayerItem(NetworkPacket* pkt);
165 void handleCommand_Respawn(NetworkPacket* pkt);
166 void handleCommand_Interact(NetworkPacket* pkt);
167 void handleCommand_RemovedSounds(NetworkPacket* pkt);
168 void handleCommand_NodeMetaFields(NetworkPacket* pkt);
169 void handleCommand_InventoryFields(NetworkPacket* pkt);
170 void handleCommand_FirstSrp(NetworkPacket* pkt);
171 void handleCommand_SrpBytesA(NetworkPacket* pkt);
172 void handleCommand_SrpBytesM(NetworkPacket* pkt);
174 void ProcessData(NetworkPacket *pkt);
176 void Send(NetworkPacket *pkt);
177 void Send(session_t peer_id, NetworkPacket *pkt);
179 // Helper for handleCommand_PlayerPos and handleCommand_Interact
180 void process_PlayerPos(RemotePlayer *player, PlayerSAO *playersao,
183 // Both setter and getter need no envlock,
184 // can be called freely from threads
185 void setTimeOfDay(u32 time);
188 Shall be called with the environment locked.
189 This is accessed by the map, which is inside the environment,
190 so it shouldn't be a problem.
192 void onMapEditEvent(MapEditEvent *event);
195 Shall be called with the environment and the connection locked.
197 Inventory* getInventory(const InventoryLocation &loc);
198 void setInventoryModified(const InventoryLocation &loc, bool playerSend = true);
200 // Connection must be locked when called
201 std::wstring getStatusString();
202 inline double getUptime() const { return m_uptime.m_value; }
204 // read shutdown state
205 inline bool isShutdownRequested() const { return m_shutdown_state.is_requested; }
207 // request server to shutdown
208 void requestShutdown(const std::string &msg, bool reconnect, float delay = 0.0f);
210 // Returns -1 if failed, sound handle on success
212 s32 playSound(const SimpleSoundSpec &spec, const ServerSoundParams ¶ms);
213 void stopSound(s32 handle);
214 void fadeSound(s32 handle, float step, float gain);
217 std::set<std::string> getPlayerEffectivePrivs(const std::string &name);
218 bool checkPriv(const std::string &name, const std::string &priv);
219 void reportPrivsModified(const std::string &name=""); // ""=all
220 void reportInventoryFormspecModified(const std::string &name);
221 void reportFormspecPrependModified(const std::string &name);
223 void setIpBanned(const std::string &ip, const std::string &name);
224 void unsetIpBanned(const std::string &ip_or_name);
225 std::string getBanDescription(const std::string &ip_or_name);
227 void notifyPlayer(const char *name, const std::wstring &msg);
228 void notifyPlayers(const std::wstring &msg);
229 void spawnParticle(const std::string &playername,
230 v3f pos, v3f velocity, v3f acceleration,
231 float expirationtime, float size,
232 bool collisiondetection, bool collision_removal, bool object_collision,
233 bool vertical, const std::string &texture,
234 const struct TileAnimationParams &animation, u8 glow);
236 u32 addParticleSpawner(u16 amount, float spawntime,
237 v3f minpos, v3f maxpos,
238 v3f minvel, v3f maxvel,
239 v3f minacc, v3f maxacc,
240 float minexptime, float maxexptime,
241 float minsize, float maxsize,
242 bool collisiondetection, bool collision_removal, bool object_collision,
243 ServerActiveObject *attached,
244 bool vertical, const std::string &texture,
245 const std::string &playername, const struct TileAnimationParams &animation,
248 void deleteParticleSpawner(const std::string &playername, u32 id);
250 // Creates or resets inventory
251 Inventory *createDetachedInventory(const std::string &name,
252 const std::string &player = "");
253 bool removeDetachedInventory(const std::string &name);
255 // Envlock and conlock should be locked when using scriptapi
256 ServerScripting *getScriptIface(){ return m_script; }
258 // actions: time-reversed list
259 // Return value: success/failure
260 bool rollbackRevertActions(const std::list<RollbackAction> &actions,
261 std::list<std::string> *log);
263 // IGameDef interface
265 virtual IItemDefManager* getItemDefManager();
266 virtual const NodeDefManager* getNodeDefManager();
267 virtual ICraftDefManager* getCraftDefManager();
268 virtual u16 allocateUnknownNodeId(const std::string &name);
269 IRollbackManager *getRollbackManager() { return m_rollback; }
270 virtual EmergeManager *getEmergeManager() { return m_emerge; }
272 IWritableItemDefManager* getWritableItemDefManager();
273 NodeDefManager* getWritableNodeDefManager();
274 IWritableCraftDefManager* getWritableCraftDefManager();
276 virtual const std::vector<ModSpec> &getMods() const;
277 virtual const ModSpec* getModSpec(const std::string &modname) const;
278 void getModNames(std::vector<std::string> &modlist);
279 std::string getBuiltinLuaPath();
280 virtual std::string getWorldPath() const { return m_path_world; }
281 virtual std::string getModStoragePath() const;
283 inline bool isSingleplayer()
284 { return m_simple_singleplayer_mode; }
286 inline void setAsyncFatalError(const std::string &error)
287 { m_async_fatal_error.set(error); }
289 bool showFormspec(const char *name, const std::string &formspec, const std::string &formname);
290 Map & getMap() { return m_env->getMap(); }
291 ServerEnvironment & getEnv() { return *m_env; }
294 u32 hudAdd(RemotePlayer *player, HudElement *element);
295 bool hudRemove(RemotePlayer *player, u32 id);
296 bool hudChange(RemotePlayer *player, u32 id, HudElementStat stat, void *value);
297 bool hudSetFlags(RemotePlayer *player, u32 flags, u32 mask);
298 bool hudSetHotbarItemcount(RemotePlayer *player, s32 hotbar_itemcount);
299 void hudSetHotbarImage(RemotePlayer *player, const std::string &name);
300 void hudSetHotbarSelectedImage(RemotePlayer *player, const std::string &name);
302 Address getPeerAddress(session_t peer_id);
304 void setLocalPlayerAnimations(RemotePlayer *player, v2s32 animation_frames[4],
306 void setPlayerEyeOffset(RemotePlayer *player, const v3f &first, const v3f &third);
308 void setSky(RemotePlayer *player, const video::SColor &bgcolor,
309 const std::string &type, const std::vector<std::string> ¶ms,
311 void setClouds(RemotePlayer *player, const CloudParams ¶ms);
313 bool overrideDayNightRatio(RemotePlayer *player, bool do_override, float brightness);
315 /* con::PeerHandler implementation. */
316 void peerAdded(con::Peer *peer);
317 void deletingPeer(con::Peer *peer, bool timeout);
319 void DenySudoAccess(session_t peer_id);
320 void DenyAccessVerCompliant(session_t peer_id, u16 proto_ver, AccessDeniedCode reason,
321 const std::string &str_reason = "", bool reconnect = false);
322 void DenyAccess(session_t peer_id, AccessDeniedCode reason,
323 const std::string &custom_reason = "");
324 void acceptAuth(session_t peer_id, bool forSudoMode);
325 void DenyAccess_Legacy(session_t peer_id, const std::wstring &reason);
326 void DisconnectPeer(session_t peer_id);
327 bool getClientConInfo(session_t peer_id, con::rtt_stat_type type, float *retval);
328 bool getClientInfo(session_t peer_id, ClientState *state, u32 *uptime,
329 u8* ser_vers, u16* prot_vers, u8* major, u8* minor, u8* patch,
330 std::string* vers_string);
332 void printToConsoleOnly(const std::string &text);
334 void SendPlayerHPOrDie(PlayerSAO *player, const PlayerHPChangeReason &reason);
335 void SendPlayerBreath(PlayerSAO *sao);
336 void SendInventory(PlayerSAO* playerSAO);
337 void SendMovePlayer(session_t peer_id);
338 void SendPlayerSpeed(session_t peer_id, const v3f &added_vel);
340 virtual bool registerModStorage(ModMetadata *storage);
341 virtual void unregisterModStorage(const std::string &name);
343 bool joinModChannel(const std::string &channel);
344 bool leaveModChannel(const std::string &channel);
345 bool sendModChannelMessage(const std::string &channel, const std::string &message);
346 ModChannel *getModChannel(const std::string &channel);
348 // Send block to specific player only
349 bool SendBlock(session_t peer_id, const v3s16 &blockpos);
354 // Environment mutex (envlock)
355 std::mutex m_env_mutex;
358 friend class EmergeThread;
359 friend class RemoteClient;
360 friend class TestServerShutdownState;
362 struct ShutdownState {
363 friend class TestServerShutdownState;
365 bool is_requested = false;
366 bool should_reconnect = false;
370 void trigger(float delay, const std::string &msg, bool reconnect);
371 void tick(float dtime, Server *server);
372 std::wstring getShutdownTimerMessage() const;
373 bool isTimerRunning() const { return m_timer > 0.0f; }
375 float m_timer = 0.0f;
378 void SendMovement(session_t peer_id);
379 void SendHP(session_t peer_id, u16 hp);
380 void SendBreath(session_t peer_id, u16 breath);
381 void SendAccessDenied(session_t peer_id, AccessDeniedCode reason,
382 const std::string &custom_reason, bool reconnect = false);
383 void SendAccessDenied_Legacy(session_t peer_id, const std::wstring &reason);
384 void SendDeathscreen(session_t peer_id, bool set_camera_point_target,
385 v3f camera_point_target);
386 void SendItemDef(session_t peer_id, IItemDefManager *itemdef, u16 protocol_version);
387 void SendNodeDef(session_t peer_id, const NodeDefManager *nodedef,
388 u16 protocol_version);
390 /* mark blocks not sent for all clients */
391 void SetBlocksNotSent(std::map<v3s16, MapBlock *>& block);
394 virtual void SendChatMessage(session_t peer_id, const ChatMessage &message);
395 void SendTimeOfDay(session_t peer_id, u16 time, f32 time_speed);
396 void SendPlayerHP(session_t peer_id);
398 void SendLocalPlayerAnimations(session_t peer_id, v2s32 animation_frames[4],
399 f32 animation_speed);
400 void SendEyeOffset(session_t peer_id, v3f first, v3f third);
401 void SendPlayerPrivileges(session_t peer_id);
402 void SendPlayerInventoryFormspec(session_t peer_id);
403 void SendPlayerFormspecPrepend(session_t peer_id);
404 void SendShowFormspecMessage(session_t peer_id, const std::string &formspec,
405 const std::string &formname);
406 void SendHUDAdd(session_t peer_id, u32 id, HudElement *form);
407 void SendHUDRemove(session_t peer_id, u32 id);
408 void SendHUDChange(session_t peer_id, u32 id, HudElementStat stat, void *value);
409 void SendHUDSetFlags(session_t peer_id, u32 flags, u32 mask);
410 void SendHUDSetParam(session_t peer_id, u16 param, const std::string &value);
411 void SendSetSky(session_t peer_id, const video::SColor &bgcolor,
412 const std::string &type, const std::vector<std::string> ¶ms,
414 void SendCloudParams(session_t peer_id, const CloudParams ¶ms);
415 void SendOverrideDayNightRatio(session_t peer_id, bool do_override, float ratio);
416 void broadcastModChannelMessage(const std::string &channel,
417 const std::string &message, session_t from_peer);
420 Send a node removal/addition event to all clients except ignore_id.
421 Additionally, if far_players!=NULL, players further away than
422 far_d_nodes are ignored and their peer_ids are added to far_players
424 // Envlock and conlock should be locked when calling these
425 void sendRemoveNode(v3s16 p, std::unordered_set<u16> *far_players = nullptr,
426 float far_d_nodes = 100);
427 void sendAddNode(v3s16 p, MapNode n,
428 std::unordered_set<u16> *far_players = nullptr,
429 float far_d_nodes = 100, bool remove_metadata = true);
431 void sendMetadataChanged(const std::list<v3s16> &meta_updates,
432 float far_d_nodes = 100);
434 // Environment and Connection must be locked when called
435 void SendBlockNoLock(session_t peer_id, MapBlock *block, u8 ver, u16 net_proto_version);
437 // Sends blocks to clients (locks env and con on its own)
438 void SendBlocks(float dtime);
440 void fillMediaCache();
441 void sendMediaAnnouncement(session_t peer_id, const std::string &lang_code);
442 void sendRequestedMedia(session_t peer_id,
443 const std::vector<std::string> &tosend);
445 void sendDetachedInventory(const std::string &name, session_t peer_id);
446 void sendDetachedInventories(session_t peer_id);
448 // Adds a ParticleSpawner on peer with peer_id (PEER_ID_INEXISTENT == all)
449 void SendAddParticleSpawner(session_t peer_id, u16 protocol_version,
450 u16 amount, float spawntime,
451 v3f minpos, v3f maxpos,
452 v3f minvel, v3f maxvel,
453 v3f minacc, v3f maxacc,
454 float minexptime, float maxexptime,
455 float minsize, float maxsize,
456 bool collisiondetection, bool collision_removal, bool object_collision,
458 bool vertical, const std::string &texture, u32 id,
459 const struct TileAnimationParams &animation, u8 glow);
461 void SendDeleteParticleSpawner(session_t peer_id, u32 id);
463 // Spawns particle on peer with peer_id (PEER_ID_INEXISTENT == all)
464 void SendSpawnParticle(session_t peer_id, u16 protocol_version,
465 v3f pos, v3f velocity, v3f acceleration,
466 float expirationtime, float size,
467 bool collisiondetection, bool collision_removal, bool object_collision,
468 bool vertical, const std::string &texture,
469 const struct TileAnimationParams &animation, u8 glow);
471 u32 SendActiveObjectRemoveAdd(session_t peer_id, const std::string &datas);
472 void SendActiveObjectMessages(session_t peer_id, const std::string &datas,
473 bool reliable = true);
474 void SendCSMRestrictionFlags(session_t peer_id);
480 void DiePlayer(session_t peer_id, const PlayerHPChangeReason &reason);
481 void RespawnPlayer(session_t peer_id);
482 void DeleteClient(session_t peer_id, ClientDeletionReason reason);
483 void UpdateCrafting(RemotePlayer *player);
484 bool checkInteractDistance(RemotePlayer *player, const f32 d, const std::string &what);
486 void handleChatInterfaceEvent(ChatEvent *evt);
488 // This returns the answer to the sender of wmessage, or "" if there is none
489 std::wstring handleChat(const std::string &name, const std::wstring &wname,
490 std::wstring wmessage_input,
491 bool check_shout_priv = false,
492 RemotePlayer *player = NULL);
493 void handleAdminChat(const ChatEventChat *evt);
495 // When called, connection mutex should be locked
496 RemoteClient* getClient(session_t peer_id, ClientState state_min = CS_Active);
497 RemoteClient* getClientNoEx(session_t peer_id, ClientState state_min = CS_Active);
499 // When called, environment mutex should be locked
500 std::string getPlayerName(session_t peer_id);
501 PlayerSAO *getPlayerSAO(session_t peer_id);
504 Get a player from memory or creates one.
505 If player is already connected, return NULL
506 Does not verify/modify auth info and password.
508 Call with env and con locked.
510 PlayerSAO *emergePlayer(const char *name, session_t peer_id, u16 proto_version);
512 void handlePeerChanges();
519 std::string m_path_world;
520 // Subgame specification
521 SubgameSpec m_gamespec;
522 // If true, do not allow multiple players and hide some multiplayer
524 bool m_simple_singleplayer_mode;
525 u16 m_max_chatmessage_length;
526 // For "dedicated" server list flag
529 // Thread can set; step() will throw as ServerError
530 MutexedVariable<std::string> m_async_fatal_error;
533 float m_liquid_transform_timer = 0.0f;
534 float m_liquid_transform_every = 1.0f;
535 float m_masterserver_timer = 0.0f;
536 float m_emergethread_trigger_timer = 0.0f;
537 float m_savemap_timer = 0.0f;
538 IntervalLimiter m_map_timer_and_unload_interval;
541 ServerEnvironment *m_env = nullptr;
544 std::shared_ptr<con::Connection> m_con;
547 BanManager *m_banmanager = nullptr;
549 // Rollback manager (behind m_env_mutex)
550 IRollbackManager *m_rollback = nullptr;
553 EmergeManager *m_emerge = nullptr;
556 // Envlock and conlock should be locked when using Lua
557 ServerScripting *m_script = nullptr;
559 // Item definition manager
560 IWritableItemDefManager *m_itemdef;
562 // Node definition manager
563 NodeDefManager *m_nodedef;
565 // Craft definition manager
566 IWritableCraftDefManager *m_craftdef;
569 EventManager *m_event;
572 std::unique_ptr<ServerModManager> m_modmgr;
578 // A buffer for time steps
579 // step() increments and AsyncRunStep() run by m_thread reads it.
580 float m_step_dtime = 0.0f;
581 std::mutex m_step_dtime_mutex;
583 // current server step lag counter
586 // The server mainly operates in this thread
587 ServerThread *m_thread = nullptr;
593 // Timer for sending time of day over network
594 float m_time_of_day_send_timer = 0.0f;
595 // Uptime of server in seconds
596 MutexedVariable<double> m_uptime;
600 ClientInterface m_clients;
604 Queues stuff from peerAdded() and deletingPeer() to
607 std::queue<con::PeerChange> m_peer_change_queue;
609 std::unordered_map<session_t, std::string> m_formspec_state_data;
615 ShutdownState m_shutdown_state;
617 ChatInterface *m_admin_chat;
618 std::string m_admin_nick;
621 Map edit event queue. Automatically receives all map edits.
622 The constructor of this class registers us to receive them through
625 NOTE: Should these be moved to actually be members of
630 Queue of map edits from the environment for sending to the clients
631 This is behind m_env_mutex
633 std::queue<MapEditEvent*> m_unsent_map_edit_queue;
635 If a non-empty area, map edit events contained within are left
636 unsent. Done at map generation time to speed up editing of the
637 generated area, as it will be sent anyway.
638 This is behind m_env_mutex
640 VoxelArea m_ignore_map_edit_events_area;
642 // media files known to server
643 std::unordered_map<std::string, MediaInfo> m_media;
648 std::unordered_map<s32, ServerPlayingSound> m_playing_sounds;
649 s32 m_next_sound_id = 0;
652 Detached inventories (behind m_env_mutex)
655 std::map<std::string, Inventory*> m_detached_inventories;
656 // value = "" (visible to all players) or player name
657 std::map<std::string, std::string> m_detached_inventories_player;
659 std::unordered_map<std::string, ModMetadata *> m_mod_storages;
660 float m_mod_storage_save_timer = 10.0f;
662 // CSM restrictions byteflag
663 u64 m_csm_restriction_flags = CSMRestrictionFlags::CSM_RF_NONE;
664 u32 m_csm_restriction_noderange = 8;
666 // ModChannel manager
667 std::unique_ptr<ModChannelMgr> m_modchannel_mgr;
671 Runs a simple dedicated server loop.
673 Shuts down when kill is set to true.
675 void dedicated_server_loop(Server &server, bool &kill);