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 "network/connection.h"
28 #include "serialization.h" // For SER_FMT_VER_INVALID
30 #include "inventorymanager.h"
32 #include "util/numeric.h"
33 #include "util/thread.h"
34 #include "environment.h"
35 #include "chat_interface.h"
36 #include "clientiface.h"
38 #include "network/networkpacket.h"
44 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
46 class IWritableItemDefManager;
47 class IWritableNodeDefManager;
48 class IWritableCraftDefManager;
53 class IRollbackManager;
54 struct RollbackAction;
57 class ServerEnvironment;
58 struct SimpleSoundSpec;
61 enum ClientDeletionReason {
67 class MapEditEventAreaIgnorer
70 MapEditEventAreaIgnorer(VoxelArea *ignorevariable, const VoxelArea &a):
71 m_ignorevariable(ignorevariable)
73 if(m_ignorevariable->getVolume() == 0)
74 *m_ignorevariable = a;
76 m_ignorevariable = NULL;
79 ~MapEditEventAreaIgnorer()
83 assert(m_ignorevariable->getVolume() != 0);
84 *m_ignorevariable = VoxelArea();
89 VoxelArea *m_ignorevariable;
95 std::string sha1_digest;
97 MediaInfo(const std::string &path_="",
98 const std::string &sha1_digest_=""):
100 sha1_digest(sha1_digest_)
105 struct ServerSoundParams
108 std::string to_player;
116 float max_hear_distance;
125 max_hear_distance(32*BS),
129 v3f getPos(ServerEnvironment *env, bool *pos_exists) const;
132 struct ServerPlayingSound
134 ServerSoundParams params;
135 UNORDERED_SET<u16> clients; // peer ids
138 class Server : public con::PeerHandler, public MapEventReceiver,
139 public InventoryManager, public IGameDef
143 NOTE: Every public method should be thread-safe
147 const std::string &path_world,
148 const SubgameSpec &gamespec,
149 bool simple_singleplayer_mode,
151 ChatInterface *iface = NULL
154 void start(Address bind_addr);
156 // This is mainly a way to pass the time to the server.
157 // Actual processing is done in an another thread.
158 void step(float dtime);
159 // This is run by ServerThread and does the actual processing
160 void AsyncRunStep(bool initial_step=false);
162 PlayerSAO* StageTwoClientInit(u16 peer_id);
168 void handleCommand(NetworkPacket* pkt);
170 void handleCommand_Null(NetworkPacket* pkt) {};
171 void handleCommand_Deprecated(NetworkPacket* pkt);
172 void handleCommand_Init(NetworkPacket* pkt);
173 void handleCommand_Init_Legacy(NetworkPacket* pkt);
174 void handleCommand_Init2(NetworkPacket* pkt);
175 void handleCommand_RequestMedia(NetworkPacket* pkt);
176 void handleCommand_ReceivedMedia(NetworkPacket* pkt);
177 void handleCommand_ClientReady(NetworkPacket* pkt);
178 void handleCommand_GotBlocks(NetworkPacket* pkt);
179 void handleCommand_PlayerPos(NetworkPacket* pkt);
180 void handleCommand_DeletedBlocks(NetworkPacket* pkt);
181 void handleCommand_InventoryAction(NetworkPacket* pkt);
182 void handleCommand_ChatMessage(NetworkPacket* pkt);
183 void handleCommand_Damage(NetworkPacket* pkt);
184 void handleCommand_Breath(NetworkPacket* pkt);
185 void handleCommand_Password(NetworkPacket* pkt);
186 void handleCommand_PlayerItem(NetworkPacket* pkt);
187 void handleCommand_Respawn(NetworkPacket* pkt);
188 void handleCommand_Interact(NetworkPacket* pkt);
189 void handleCommand_RemovedSounds(NetworkPacket* pkt);
190 void handleCommand_NodeMetaFields(NetworkPacket* pkt);
191 void handleCommand_InventoryFields(NetworkPacket* pkt);
192 void handleCommand_FirstSrp(NetworkPacket* pkt);
193 void handleCommand_SrpBytesA(NetworkPacket* pkt);
194 void handleCommand_SrpBytesM(NetworkPacket* pkt);
196 void ProcessData(NetworkPacket *pkt);
198 void Send(NetworkPacket* pkt);
200 // Both setter and getter need no envlock,
201 // can be called freely from threads
202 void setTimeOfDay(u32 time);
205 Shall be called with the environment locked.
206 This is accessed by the map, which is inside the environment,
207 so it shouldn't be a problem.
209 void onMapEditEvent(MapEditEvent *event);
212 Shall be called with the environment and the connection locked.
214 Inventory* getInventory(const InventoryLocation &loc);
215 void setInventoryModified(const InventoryLocation &loc, bool playerSend = true);
217 // Connection must be locked when called
218 std::wstring getStatusString();
220 // read shutdown state
221 inline bool getShutdownRequested() const { return m_shutdown_requested; }
223 // request server to shutdown
224 void requestShutdown(const std::string &msg, bool reconnect)
226 m_shutdown_requested = true;
227 m_shutdown_msg = msg;
228 m_shutdown_ask_reconnect = reconnect;
231 // Returns -1 if failed, sound handle on success
233 s32 playSound(const SimpleSoundSpec &spec, const ServerSoundParams ¶ms);
234 void stopSound(s32 handle);
237 std::set<std::string> getPlayerEffectivePrivs(const std::string &name);
238 bool checkPriv(const std::string &name, const std::string &priv);
239 void reportPrivsModified(const std::string &name=""); // ""=all
240 void reportInventoryFormspecModified(const std::string &name);
242 void setIpBanned(const std::string &ip, const std::string &name);
243 void unsetIpBanned(const std::string &ip_or_name);
244 std::string getBanDescription(const std::string &ip_or_name);
246 void notifyPlayer(const char *name, const std::wstring &msg);
247 void notifyPlayers(const std::wstring &msg);
248 void spawnParticle(const std::string &playername,
249 v3f pos, v3f velocity, v3f acceleration,
250 float expirationtime, float size,
251 bool collisiondetection, bool collision_removal,
252 bool vertical, const std::string &texture);
254 u32 addParticleSpawner(u16 amount, float spawntime,
255 v3f minpos, v3f maxpos,
256 v3f minvel, v3f maxvel,
257 v3f minacc, v3f maxacc,
258 float minexptime, float maxexptime,
259 float minsize, float maxsize,
260 bool collisiondetection, bool collision_removal,
261 bool vertical, const std::string &texture,
262 const std::string &playername);
264 void deleteParticleSpawner(const std::string &playername, u32 id);
266 // Creates or resets inventory
267 Inventory* createDetachedInventory(const std::string &name);
269 // Envlock and conlock should be locked when using scriptapi
270 GameScripting *getScriptIface(){ return m_script; }
272 // actions: time-reversed list
273 // Return value: success/failure
274 bool rollbackRevertActions(const std::list<RollbackAction> &actions,
275 std::list<std::string> *log);
277 // IGameDef interface
279 virtual IItemDefManager* getItemDefManager();
280 virtual INodeDefManager* getNodeDefManager();
281 virtual ICraftDefManager* getCraftDefManager();
282 virtual ITextureSource* getTextureSource();
283 virtual IShaderSource* getShaderSource();
284 virtual u16 allocateUnknownNodeId(const std::string &name);
285 virtual ISoundManager* getSoundManager();
286 virtual MtEventManager* getEventManager();
287 virtual scene::ISceneManager* getSceneManager();
288 virtual IRollbackManager *getRollbackManager() { return m_rollback; }
289 virtual EmergeManager *getEmergeManager() { return m_emerge; }
291 IWritableItemDefManager* getWritableItemDefManager();
292 IWritableNodeDefManager* getWritableNodeDefManager();
293 IWritableCraftDefManager* getWritableCraftDefManager();
295 const ModSpec* getModSpec(const std::string &modname) const;
296 void getModNames(std::vector<std::string> &modlist);
297 std::string getBuiltinLuaPath();
298 inline std::string getWorldPath() const { return m_path_world; }
300 inline bool isSingleplayer()
301 { return m_simple_singleplayer_mode; }
303 inline void setAsyncFatalError(const std::string &error)
304 { m_async_fatal_error.set(error); }
306 bool showFormspec(const char *name, const std::string &formspec, const std::string &formname);
307 Map & getMap() { return m_env->getMap(); }
308 ServerEnvironment & getEnv() { return *m_env; }
310 u32 hudAdd(RemotePlayer *player, HudElement *element);
311 bool hudRemove(RemotePlayer *player, u32 id);
312 bool hudChange(RemotePlayer *player, u32 id, HudElementStat stat, void *value);
313 bool hudSetFlags(RemotePlayer *player, u32 flags, u32 mask);
314 bool hudSetHotbarItemcount(RemotePlayer *player, s32 hotbar_itemcount);
315 s32 hudGetHotbarItemcount(RemotePlayer *player) const
316 { return player->getHotbarItemcount(); }
317 void hudSetHotbarImage(RemotePlayer *player, std::string name);
318 std::string hudGetHotbarImage(RemotePlayer *player);
319 void hudSetHotbarSelectedImage(RemotePlayer *player, std::string name);
320 std::string hudGetHotbarSelectedImage(RemotePlayer *player);
322 inline Address getPeerAddress(u16 peer_id)
323 { return m_con.GetPeerAddress(peer_id); }
325 bool setLocalPlayerAnimations(RemotePlayer *player, v2s32 animation_frames[4],
327 bool setPlayerEyeOffset(RemotePlayer *player, v3f first, v3f third);
329 bool setSky(RemotePlayer *player, const video::SColor &bgcolor,
330 const std::string &type, const std::vector<std::string> ¶ms);
332 bool overrideDayNightRatio(RemotePlayer *player, bool do_override, float brightness);
334 /* con::PeerHandler implementation. */
335 void peerAdded(con::Peer *peer);
336 void deletingPeer(con::Peer *peer, bool timeout);
338 void DenySudoAccess(u16 peer_id);
339 void DenyAccessVerCompliant(u16 peer_id, u16 proto_ver, AccessDeniedCode reason,
340 const std::string &str_reason = "", bool reconnect = false);
341 void DenyAccess(u16 peer_id, AccessDeniedCode reason, const std::string &custom_reason="");
342 void acceptAuth(u16 peer_id, bool forSudoMode);
343 void DenyAccess_Legacy(u16 peer_id, const std::wstring &reason);
344 bool getClientConInfo(u16 peer_id, con::rtt_stat_type type,float* retval);
345 bool getClientInfo(u16 peer_id,ClientState* state, u32* uptime,
346 u8* ser_vers, u16* prot_vers, u8* major, u8* minor, u8* patch,
347 std::string* vers_string);
349 void printToConsoleOnly(const std::string &text);
351 void SendPlayerHPOrDie(PlayerSAO *player);
352 void SendPlayerBreath(u16 peer_id);
353 void SendInventory(PlayerSAO* playerSAO);
354 void SendMovePlayer(u16 peer_id);
359 // Environment mutex (envlock)
364 friend class EmergeThread;
365 friend class RemoteClient;
367 void SendMovement(u16 peer_id);
368 void SendHP(u16 peer_id, u8 hp);
369 void SendBreath(u16 peer_id, u16 breath);
370 void SendAccessDenied(u16 peer_id, AccessDeniedCode reason,
371 const std::string &custom_reason, bool reconnect = false);
372 void SendAccessDenied_Legacy(u16 peer_id, const std::wstring &reason);
373 void SendDeathscreen(u16 peer_id,bool set_camera_point_target, v3f camera_point_target);
374 void SendItemDef(u16 peer_id,IItemDefManager *itemdef, u16 protocol_version);
375 void SendNodeDef(u16 peer_id,INodeDefManager *nodedef, u16 protocol_version);
377 /* mark blocks not sent for all clients */
378 void SetBlocksNotSent(std::map<v3s16, MapBlock *>& block);
381 void SendChatMessage(u16 peer_id, const std::wstring &message);
382 void SendTimeOfDay(u16 peer_id, u16 time, f32 time_speed);
383 void SendPlayerHP(u16 peer_id);
385 void SendLocalPlayerAnimations(u16 peer_id, v2s32 animation_frames[4], f32 animation_speed);
386 void SendEyeOffset(u16 peer_id, v3f first, v3f third);
387 void SendPlayerPrivileges(u16 peer_id);
388 void SendPlayerInventoryFormspec(u16 peer_id);
389 void SendShowFormspecMessage(u16 peer_id, const std::string &formspec, const std::string &formname);
390 void SendHUDAdd(u16 peer_id, u32 id, HudElement *form);
391 void SendHUDRemove(u16 peer_id, u32 id);
392 void SendHUDChange(u16 peer_id, u32 id, HudElementStat stat, void *value);
393 void SendHUDSetFlags(u16 peer_id, u32 flags, u32 mask);
394 void SendHUDSetParam(u16 peer_id, u16 param, const std::string &value);
395 void SendSetSky(u16 peer_id, const video::SColor &bgcolor,
396 const std::string &type, const std::vector<std::string> ¶ms);
397 void SendOverrideDayNightRatio(u16 peer_id, bool do_override, float ratio);
400 Send a node removal/addition event to all clients except ignore_id.
401 Additionally, if far_players!=NULL, players further away than
402 far_d_nodes are ignored and their peer_ids are added to far_players
404 // Envlock and conlock should be locked when calling these
405 void sendRemoveNode(v3s16 p, u16 ignore_id=0,
406 std::vector<u16> *far_players=NULL, float far_d_nodes=100);
407 void sendAddNode(v3s16 p, MapNode n, u16 ignore_id=0,
408 std::vector<u16> *far_players=NULL, float far_d_nodes=100,
409 bool remove_metadata=true);
410 void setBlockNotSent(v3s16 p);
412 // Environment and Connection must be locked when called
413 void SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver, u16 net_proto_version);
415 // Sends blocks to clients (locks env and con on its own)
416 void SendBlocks(float dtime);
418 void fillMediaCache();
419 void sendMediaAnnouncement(u16 peer_id);
420 void sendRequestedMedia(u16 peer_id,
421 const std::vector<std::string> &tosend);
423 void sendDetachedInventory(const std::string &name, u16 peer_id);
424 void sendDetachedInventories(u16 peer_id);
426 // Adds a ParticleSpawner on peer with peer_id (PEER_ID_INEXISTENT == all)
427 void SendAddParticleSpawner(u16 peer_id, u16 amount, float spawntime,
428 v3f minpos, v3f maxpos,
429 v3f minvel, v3f maxvel,
430 v3f minacc, v3f maxacc,
431 float minexptime, float maxexptime,
432 float minsize, float maxsize,
433 bool collisiondetection, bool collision_removal,
434 bool vertical, const std::string &texture, u32 id);
436 void SendDeleteParticleSpawner(u16 peer_id, u32 id);
438 // Spawns particle on peer with peer_id (PEER_ID_INEXISTENT == all)
439 void SendSpawnParticle(u16 peer_id,
440 v3f pos, v3f velocity, v3f acceleration,
441 float expirationtime, float size,
442 bool collisiondetection, bool collision_removal,
443 bool vertical, const std::string &texture);
445 u32 SendActiveObjectRemoveAdd(u16 peer_id, const std::string &datas);
446 void SendActiveObjectMessages(u16 peer_id, const std::string &datas, bool reliable = true);
451 void DiePlayer(u16 peer_id);
452 void RespawnPlayer(u16 peer_id);
453 void DeleteClient(u16 peer_id, ClientDeletionReason reason);
454 void UpdateCrafting(RemotePlayer *player);
456 void handleChatInterfaceEvent(ChatEvent *evt);
458 // This returns the answer to the sender of wmessage, or "" if there is none
459 std::wstring handleChat(const std::string &name, const std::wstring &wname,
460 const std::wstring &wmessage,
461 bool check_shout_priv = false,
462 RemotePlayer *player = NULL);
463 void handleAdminChat(const ChatEventChat *evt);
467 // When called, connection mutex should be locked
468 RemoteClient* getClient(u16 peer_id,ClientState state_min=CS_Active);
469 RemoteClient* getClientNoEx(u16 peer_id,ClientState state_min=CS_Active);
471 // When called, environment mutex should be locked
472 std::string getPlayerName(u16 peer_id);
473 PlayerSAO* getPlayerSAO(u16 peer_id);
476 Get a player from memory or creates one.
477 If player is already connected, return NULL
478 Does not verify/modify auth info and password.
480 Call with env and con locked.
482 PlayerSAO *emergePlayer(const char *name, u16 peer_id, u16 proto_version);
484 void handlePeerChanges();
491 std::string m_path_world;
492 // Subgame specification
493 SubgameSpec m_gamespec;
494 // If true, do not allow multiple players and hide some multiplayer
496 bool m_simple_singleplayer_mode;
497 u16 m_max_chatmessage_length;
499 // Thread can set; step() will throw as ServerError
500 MutexedVariable<std::string> m_async_fatal_error;
503 float m_liquid_transform_timer;
504 float m_liquid_transform_every;
505 float m_masterserver_timer;
506 float m_emergethread_trigger_timer;
507 float m_savemap_timer;
508 IntervalLimiter m_map_timer_and_unload_interval;
511 ServerEnvironment *m_env;
514 con::Connection m_con;
517 BanManager *m_banmanager;
519 // Rollback manager (behind m_env_mutex)
520 IRollbackManager *m_rollback;
521 bool m_enable_rollback_recording; // Updated once in a while
524 EmergeManager *m_emerge;
527 // Envlock and conlock should be locked when using Lua
528 GameScripting *m_script;
530 // Item definition manager
531 IWritableItemDefManager *m_itemdef;
533 // Node definition manager
534 IWritableNodeDefManager *m_nodedef;
536 // Craft definition manager
537 IWritableCraftDefManager *m_craftdef;
540 EventManager *m_event;
543 std::vector<ModSpec> m_mods;
549 // A buffer for time steps
550 // step() increments and AsyncRunStep() run by m_thread reads it.
552 Mutex m_step_dtime_mutex;
554 // current server step lag counter
557 // The server mainly operates in this thread
558 ServerThread *m_thread;
564 // Timer for sending time of day over network
565 float m_time_of_day_send_timer;
566 // Uptime of server in seconds
567 MutexedVariable<double> m_uptime;
572 ClientInterface m_clients;
576 Queues stuff from peerAdded() and deletingPeer() to
579 std::queue<con::PeerChange> m_peer_change_queue;
585 bool m_shutdown_requested;
586 std::string m_shutdown_msg;
587 bool m_shutdown_ask_reconnect;
589 ChatInterface *m_admin_chat;
590 std::string m_admin_nick;
593 Map edit event queue. Automatically receives all map edits.
594 The constructor of this class registers us to receive them through
597 NOTE: Should these be moved to actually be members of
602 Queue of map edits from the environment for sending to the clients
603 This is behind m_env_mutex
605 std::queue<MapEditEvent*> m_unsent_map_edit_queue;
607 Set to true when the server itself is modifying the map and does
608 all sending of information by itself.
609 This is behind m_env_mutex
611 bool m_ignore_map_edit_events;
613 If a non-empty area, map edit events contained within are left
614 unsent. Done at map generation time to speed up editing of the
615 generated area, as it will be sent anyway.
616 This is behind m_env_mutex
618 VoxelArea m_ignore_map_edit_events_area;
620 If set to !=0, the incoming MapEditEvents are modified to have
621 this peed id as the disabled recipient
622 This is behind m_env_mutex
624 u16 m_ignore_map_edit_events_peer_id;
626 // media files known to server
627 UNORDERED_MAP<std::string, MediaInfo> m_media;
632 UNORDERED_MAP<s32, ServerPlayingSound> m_playing_sounds;
636 Detached inventories (behind m_env_mutex)
639 std::map<std::string, Inventory*> m_detached_inventories;
641 DISABLE_CLASS_COPY(Server);
645 Runs a simple dedicated server loop.
647 Shuts down when kill is set to true.
649 void dedicated_server_loop(Server &server, bool &kill);