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.
23 #include "connection.h"
28 #include "serialization.h" // For SER_FMT_VER_INVALID
30 #include "inventorymanager.h"
32 #include "rollback_interface.h" // Needed for rollbackRevertActions()
33 #include "util/numeric.h"
34 #include "util/thread.h"
35 #include "environment.h"
36 #include "clientiface.h"
42 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
44 class IWritableItemDefManager;
45 class IWritableNodeDefManager;
46 class IWritableCraftDefManager;
52 class IRollbackManager;
55 class ServerEnvironment;
56 struct SimpleSoundSpec;
59 enum ClientDeletionReason {
68 v3f findSpawnPos(ServerMap &map);
70 class MapEditEventIgnorer
73 MapEditEventIgnorer(bool *flag):
82 ~MapEditEventIgnorer()
95 class MapEditEventAreaIgnorer
98 MapEditEventAreaIgnorer(VoxelArea *ignorevariable, const VoxelArea &a):
99 m_ignorevariable(ignorevariable)
101 if(m_ignorevariable->getVolume() == 0)
102 *m_ignorevariable = a;
104 m_ignorevariable = NULL;
107 ~MapEditEventAreaIgnorer()
111 assert(m_ignorevariable->getVolume() != 0);
112 *m_ignorevariable = VoxelArea();
117 VoxelArea *m_ignorevariable;
123 std::string sha1_digest;
125 MediaInfo(const std::string path_="",
126 const std::string sha1_digest_=""):
128 sha1_digest(sha1_digest_)
133 struct ServerSoundParams
136 std::string to_player;
144 float max_hear_distance;
153 max_hear_distance(32*BS),
157 v3f getPos(ServerEnvironment *env, bool *pos_exists) const;
160 struct ServerPlayingSound
162 ServerSoundParams params;
163 std::set<u16> clients; // peer ids
166 class Server : public con::PeerHandler, public MapEventReceiver,
167 public InventoryManager, public IGameDef
171 NOTE: Every public method should be thread-safe
175 const std::string &path_world,
176 const SubgameSpec &gamespec,
177 bool simple_singleplayer_mode
180 void start(Address bind_addr);
182 // This is mainly a way to pass the time to the server.
183 // Actual processing is done in an another thread.
184 void step(float dtime);
185 // This is run by ServerThread and does the actual processing
186 void AsyncRunStep(bool initial_step=false);
188 void ProcessData(u8 *data, u32 datasize, u16 peer_id);
190 // Environment must be locked when called
191 void setTimeOfDay(u32 time);
194 Shall be called with the environment locked.
195 This is accessed by the map, which is inside the environment,
196 so it shouldn't be a problem.
198 void onMapEditEvent(MapEditEvent *event);
201 Shall be called with the environment and the connection locked.
203 Inventory* getInventory(const InventoryLocation &loc);
204 void setInventoryModified(const InventoryLocation &loc);
206 // Connection must be locked when called
207 std::wstring getStatusString();
209 // read shutdown state
210 inline bool getShutdownRequested()
211 { return m_shutdown_requested; }
213 // request server to shutdown
214 inline void requestShutdown(void)
215 { m_shutdown_requested = true; }
217 // Returns -1 if failed, sound handle on success
219 s32 playSound(const SimpleSoundSpec &spec, const ServerSoundParams ¶ms);
220 void stopSound(s32 handle);
223 std::set<std::string> getPlayerEffectivePrivs(const std::string &name);
224 bool checkPriv(const std::string &name, const std::string &priv);
225 void reportPrivsModified(const std::string &name=""); // ""=all
226 void reportInventoryFormspecModified(const std::string &name);
228 void setIpBanned(const std::string &ip, const std::string &name);
229 void unsetIpBanned(const std::string &ip_or_name);
230 std::string getBanDescription(const std::string &ip_or_name);
232 void notifyPlayer(const char *name, const std::wstring msg);
233 void notifyPlayers(const std::wstring msg);
234 void spawnParticle(const char *playername,
235 v3f pos, v3f velocity, v3f acceleration,
236 float expirationtime, float size,
237 bool collisiondetection, bool vertical, std::string texture);
239 void spawnParticleAll(v3f pos, v3f velocity, v3f acceleration,
240 float expirationtime, float size,
241 bool collisiondetection, bool vertical, std::string texture);
243 u32 addParticleSpawner(const char *playername,
244 u16 amount, float spawntime,
245 v3f minpos, v3f maxpos,
246 v3f minvel, v3f maxvel,
247 v3f minacc, v3f maxacc,
248 float minexptime, float maxexptime,
249 float minsize, float maxsize,
250 bool collisiondetection, bool vertical, std::string texture);
252 u32 addParticleSpawnerAll(u16 amount, float spawntime,
253 v3f minpos, v3f maxpos,
254 v3f minvel, v3f maxvel,
255 v3f minacc, v3f maxacc,
256 float minexptime, float maxexptime,
257 float minsize, float maxsize,
258 bool collisiondetection, bool vertical, std::string texture);
260 void deleteParticleSpawner(const char *playername, u32 id);
261 void deleteParticleSpawnerAll(u32 id);
263 // Creates or resets inventory
264 Inventory* createDetachedInventory(const std::string &name);
266 // Envlock and conlock should be locked when using scriptapi
267 GameScripting *getScriptIface(){ return m_script; }
269 // Envlock should be locked when using the rollback manager
270 IRollbackManager *getRollbackManager(){ return m_rollback; }
272 //TODO: determine what (if anything) should be locked to access EmergeManager
273 EmergeManager *getEmergeManager(){ return m_emerge; }
275 // actions: time-reversed list
276 // Return value: success/failure
277 bool rollbackRevertActions(const std::list<RollbackAction> &actions,
278 std::list<std::string> *log);
280 // IGameDef interface
282 virtual IItemDefManager* getItemDefManager();
283 virtual INodeDefManager* getNodeDefManager();
284 virtual ICraftDefManager* getCraftDefManager();
285 virtual ITextureSource* getTextureSource();
286 virtual IShaderSource* getShaderSource();
287 virtual u16 allocateUnknownNodeId(const std::string &name);
288 virtual ISoundManager* getSoundManager();
289 virtual MtEventManager* getEventManager();
290 virtual IRollbackReportSink* getRollbackReportSink();
292 IWritableItemDefManager* getWritableItemDefManager();
293 IWritableNodeDefManager* getWritableNodeDefManager();
294 IWritableCraftDefManager* getWritableCraftDefManager();
296 const ModSpec* getModSpec(const std::string &modname);
297 void getModNames(std::list<std::string> &modlist);
298 std::string getBuiltinLuaPath();
299 inline std::string getWorldPath()
300 { return m_path_world; }
302 inline bool isSingleplayer()
303 { return m_simple_singleplayer_mode; }
305 inline void setAsyncFatalError(const std::string &error)
306 { m_async_fatal_error.set(error); }
308 bool showFormspec(const char *name, const std::string &formspec, const std::string &formname);
309 Map & getMap() { return m_env->getMap(); }
310 ServerEnvironment & getEnv() { return *m_env; }
312 u32 hudAdd(Player *player, HudElement *element);
313 bool hudRemove(Player *player, u32 id);
314 bool hudChange(Player *player, u32 id, HudElementStat stat, void *value);
315 bool hudSetFlags(Player *player, u32 flags, u32 mask);
316 bool hudSetHotbarItemcount(Player *player, s32 hotbar_itemcount);
317 void hudSetHotbarImage(Player *player, std::string name);
318 void hudSetHotbarSelectedImage(Player *player, std::string name);
320 inline Address getPeerAddress(u16 peer_id)
321 { return m_con.GetPeerAddress(peer_id); }
323 bool setSky(Player *player, const video::SColor &bgcolor,
324 const std::string &type, const std::vector<std::string> ¶ms);
326 bool overrideDayNightRatio(Player *player, bool do_override,
329 /* con::PeerHandler implementation. */
330 void peerAdded(con::Peer *peer);
331 void deletingPeer(con::Peer *peer, bool timeout);
333 void DenyAccess(u16 peer_id, const std::wstring &reason);
337 friend class EmergeThread;
338 friend class RemoteClient;
340 void SendMovement(u16 peer_id);
341 void SendHP(u16 peer_id, u8 hp);
342 void SendBreath(u16 peer_id, u16 breath);
343 void SendAccessDenied(u16 peer_id,const std::wstring &reason);
344 void SendDeathscreen(u16 peer_id,bool set_camera_point_target, v3f camera_point_target);
345 void SendItemDef(u16 peer_id,IItemDefManager *itemdef, u16 protocol_version);
346 void SendNodeDef(u16 peer_id,INodeDefManager *nodedef, u16 protocol_version);
348 /* mark blocks not sent for all clients */
349 void SetBlocksNotSent(std::map<v3s16, MapBlock *>& block);
351 // Envlock and conlock should be locked when calling these
352 void SendInventory(u16 peer_id);
353 void SendChatMessage(u16 peer_id, const std::wstring &message);
354 void SendTimeOfDay(u16 peer_id, u16 time, f32 time_speed);
355 void SendPlayerHP(u16 peer_id);
356 void SendPlayerBreath(u16 peer_id);
357 void SendMovePlayer(u16 peer_id);
358 void SendPlayerPrivileges(u16 peer_id);
359 void SendPlayerInventoryFormspec(u16 peer_id);
360 void SendShowFormspecMessage(u16 peer_id, const std::string formspec, const std::string formname);
361 void SendHUDAdd(u16 peer_id, u32 id, HudElement *form);
362 void SendHUDRemove(u16 peer_id, u32 id);
363 void SendHUDChange(u16 peer_id, u32 id, HudElementStat stat, void *value);
364 void SendHUDSetFlags(u16 peer_id, u32 flags, u32 mask);
365 void SendHUDSetParam(u16 peer_id, u16 param, const std::string &value);
366 void SendSetSky(u16 peer_id, const video::SColor &bgcolor,
367 const std::string &type, const std::vector<std::string> ¶ms);
368 void SendOverrideDayNightRatio(u16 peer_id, bool do_override, float ratio);
371 Send a node removal/addition event to all clients except ignore_id.
372 Additionally, if far_players!=NULL, players further away than
373 far_d_nodes are ignored and their peer_ids are added to far_players
375 // Envlock and conlock should be locked when calling these
376 void sendRemoveNode(v3s16 p, u16 ignore_id=0,
377 std::list<u16> *far_players=NULL, float far_d_nodes=100);
378 void sendAddNode(v3s16 p, MapNode n, u16 ignore_id=0,
379 std::list<u16> *far_players=NULL, float far_d_nodes=100,
380 bool remove_metadata=true);
381 void setBlockNotSent(v3s16 p);
383 // Environment and Connection must be locked when called
384 void SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver, u16 net_proto_version);
386 // Sends blocks to clients (locks env and con on its own)
387 void SendBlocks(float dtime);
389 void fillMediaCache();
390 void sendMediaAnnouncement(u16 peer_id);
391 void sendRequestedMedia(u16 peer_id,
392 const std::list<std::string> &tosend);
394 void sendDetachedInventory(const std::string &name, u16 peer_id);
395 void sendDetachedInventories(u16 peer_id);
397 // Adds a ParticleSpawner on peer with peer_id (PEER_ID_INEXISTENT == all)
398 void SendAddParticleSpawner(u16 peer_id, u16 amount, float spawntime,
399 v3f minpos, v3f maxpos,
400 v3f minvel, v3f maxvel,
401 v3f minacc, v3f maxacc,
402 float minexptime, float maxexptime,
403 float minsize, float maxsize,
404 bool collisiondetection, bool vertical, std::string texture, u32 id);
406 void SendDeleteParticleSpawner(u16 peer_id, u32 id);
408 // Spawns particle on peer with peer_id (PEER_ID_INEXISTENT == all)
409 void SendSpawnParticle(u16 peer_id,
410 v3f pos, v3f velocity, v3f acceleration,
411 float expirationtime, float size,
412 bool collisiondetection, bool vertical, std::string texture);
418 void DiePlayer(u16 peer_id);
419 void RespawnPlayer(u16 peer_id);
420 void DeleteClient(u16 peer_id, ClientDeletionReason reason);
421 void UpdateCrafting(u16 peer_id);
423 // When called, connection mutex should be locked
424 RemoteClient* getClient(u16 peer_id,ClientState state_min=Active);
425 RemoteClient* getClientNoEx(u16 peer_id,ClientState state_min=Active);
427 // When called, environment mutex should be locked
428 std::string getPlayerName(u16 peer_id);
429 PlayerSAO* getPlayerSAO(u16 peer_id);
432 Get a player from memory or creates one.
433 If player is already connected, return NULL
434 Does not verify/modify auth info and password.
436 Call with env and con locked.
438 PlayerSAO *emergePlayer(const char *name, u16 peer_id);
440 void handlePeerChanges();
447 std::string m_path_world;
448 // Subgame specification
449 SubgameSpec m_gamespec;
450 // If true, do not allow multiple players and hide some multiplayer
452 bool m_simple_singleplayer_mode;
454 // Thread can set; step() will throw as ServerError
455 MutexedVariable<std::string> m_async_fatal_error;
458 float m_liquid_transform_timer;
459 float m_liquid_transform_every;
460 float m_print_info_timer;
461 float m_masterserver_timer;
462 float m_objectdata_timer;
463 float m_emergethread_trigger_timer;
464 float m_savemap_timer;
465 IntervalLimiter m_map_timer_and_unload_interval;
468 ServerEnvironment *m_env;
472 con::Connection m_con;
475 BanManager *m_banmanager;
477 // Rollback manager (behind m_env_mutex)
478 IRollbackManager *m_rollback;
479 bool m_rollback_sink_enabled;
480 bool m_enable_rollback_recording; // Updated once in a while
483 EmergeManager *m_emerge;
486 // Envlock and conlock should be locked when using Lua
487 GameScripting *m_script;
489 // Item definition manager
490 IWritableItemDefManager *m_itemdef;
492 // Node definition manager
493 IWritableNodeDefManager *m_nodedef;
495 // Craft definition manager
496 IWritableCraftDefManager *m_craftdef;
499 EventManager *m_event;
502 std::vector<ModSpec> m_mods;
508 // A buffer for time steps
509 // step() increments and AsyncRunStep() run by m_thread reads it.
511 JMutex m_step_dtime_mutex;
513 // current server step lag counter
516 // The server mainly operates in this thread
517 ServerThread *m_thread;
523 // Timer for sending time of day over network
524 float m_time_of_day_send_timer;
525 // Uptime of server in seconds
526 MutexedVariable<double> m_uptime;
531 ClientInterface m_clients;
535 Queues stuff from peerAdded() and deletingPeer() to
538 Queue<con::PeerChange> m_peer_change_queue;
544 // Mod parent directory paths
545 std::list<std::string> m_modspaths;
547 bool m_shutdown_requested;
550 Map edit event queue. Automatically receives all map edits.
551 The constructor of this class registers us to receive them through
554 NOTE: Should these be moved to actually be members of
559 Queue of map edits from the environment for sending to the clients
560 This is behind m_env_mutex
562 Queue<MapEditEvent*> m_unsent_map_edit_queue;
564 Set to true when the server itself is modifying the map and does
565 all sending of information by itself.
566 This is behind m_env_mutex
568 bool m_ignore_map_edit_events;
570 If a non-empty area, map edit events contained within are left
571 unsent. Done at map generation time to speed up editing of the
572 generated area, as it will be sent anyway.
573 This is behind m_env_mutex
575 VoxelArea m_ignore_map_edit_events_area;
577 If set to !=0, the incoming MapEditEvents are modified to have
578 this peed id as the disabled recipient
579 This is behind m_env_mutex
581 u16 m_ignore_map_edit_events_peer_id;
583 // media files known to server
584 std::map<std::string,MediaInfo> m_media;
589 std::map<s32, ServerPlayingSound> m_playing_sounds;
593 Detached inventories (behind m_env_mutex)
596 std::map<std::string, Inventory*> m_detached_inventories;
601 std::vector<u32> m_particlespawner_ids;
605 Runs a simple dedicated server loop.
607 Shuts down when run is set to false.
609 void dedicated_server_loop(Server &server, bool &run);