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"
37 #include "remoteplayer.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 // Helper for handleCommand_PlayerPos and handleCommand_Interact
201 void process_PlayerPos(RemotePlayer *player, PlayerSAO *playersao,
204 // Both setter and getter need no envlock,
205 // can be called freely from threads
206 void setTimeOfDay(u32 time);
209 Shall be called with the environment locked.
210 This is accessed by the map, which is inside the environment,
211 so it shouldn't be a problem.
213 void onMapEditEvent(MapEditEvent *event);
216 Shall be called with the environment and the connection locked.
218 Inventory* getInventory(const InventoryLocation &loc);
219 void setInventoryModified(const InventoryLocation &loc, bool playerSend = true);
221 // Connection must be locked when called
222 std::wstring getStatusString();
223 inline double getUptime() const { return m_uptime.m_value; }
225 // read shutdown state
226 inline bool getShutdownRequested() const { return m_shutdown_requested; }
228 // request server to shutdown
229 void requestShutdown(const std::string &msg, bool reconnect)
231 m_shutdown_requested = true;
232 m_shutdown_msg = msg;
233 m_shutdown_ask_reconnect = reconnect;
236 // Returns -1 if failed, sound handle on success
238 s32 playSound(const SimpleSoundSpec &spec, const ServerSoundParams ¶ms);
239 void stopSound(s32 handle);
242 std::set<std::string> getPlayerEffectivePrivs(const std::string &name);
243 bool checkPriv(const std::string &name, const std::string &priv);
244 void reportPrivsModified(const std::string &name=""); // ""=all
245 void reportInventoryFormspecModified(const std::string &name);
247 void setIpBanned(const std::string &ip, const std::string &name);
248 void unsetIpBanned(const std::string &ip_or_name);
249 std::string getBanDescription(const std::string &ip_or_name);
251 void notifyPlayer(const char *name, const std::wstring &msg);
252 void notifyPlayers(const std::wstring &msg);
253 void spawnParticle(const std::string &playername,
254 v3f pos, v3f velocity, v3f acceleration,
255 float expirationtime, float size,
256 bool collisiondetection, bool collision_removal,
257 bool vertical, const std::string &texture);
259 u32 addParticleSpawner(u16 amount, float spawntime,
260 v3f minpos, v3f maxpos,
261 v3f minvel, v3f maxvel,
262 v3f minacc, v3f maxacc,
263 float minexptime, float maxexptime,
264 float minsize, float maxsize,
265 bool collisiondetection, bool collision_removal,
266 ServerActiveObject *attached,
267 bool vertical, const std::string &texture,
268 const std::string &playername);
270 void deleteParticleSpawner(const std::string &playername, u32 id);
272 // Creates or resets inventory
273 Inventory* createDetachedInventory(const std::string &name, const std::string &player="");
275 // Envlock and conlock should be locked when using scriptapi
276 GameScripting *getScriptIface(){ return m_script; }
278 // actions: time-reversed list
279 // Return value: success/failure
280 bool rollbackRevertActions(const std::list<RollbackAction> &actions,
281 std::list<std::string> *log);
283 // IGameDef interface
285 virtual IItemDefManager* getItemDefManager();
286 virtual INodeDefManager* getNodeDefManager();
287 virtual ICraftDefManager* getCraftDefManager();
288 virtual ITextureSource* getTextureSource();
289 virtual IShaderSource* getShaderSource();
290 virtual u16 allocateUnknownNodeId(const std::string &name);
291 virtual ISoundManager* getSoundManager();
292 virtual MtEventManager* getEventManager();
293 virtual scene::ISceneManager* getSceneManager();
294 virtual IRollbackManager *getRollbackManager() { return m_rollback; }
295 virtual EmergeManager *getEmergeManager() { return m_emerge; }
297 IWritableItemDefManager* getWritableItemDefManager();
298 IWritableNodeDefManager* getWritableNodeDefManager();
299 IWritableCraftDefManager* getWritableCraftDefManager();
301 const std::vector<ModSpec> &getMods() const { return m_mods; }
302 const ModSpec* getModSpec(const std::string &modname) const;
303 void getModNames(std::vector<std::string> &modlist);
304 std::string getBuiltinLuaPath();
305 inline std::string getWorldPath() const { return m_path_world; }
307 inline bool isSingleplayer()
308 { return m_simple_singleplayer_mode; }
310 inline void setAsyncFatalError(const std::string &error)
311 { m_async_fatal_error.set(error); }
313 bool showFormspec(const char *name, const std::string &formspec, const std::string &formname);
314 Map & getMap() { return m_env->getMap(); }
315 ServerEnvironment & getEnv() { return *m_env; }
317 u32 hudAdd(RemotePlayer *player, HudElement *element);
318 bool hudRemove(RemotePlayer *player, u32 id);
319 bool hudChange(RemotePlayer *player, u32 id, HudElementStat stat, void *value);
320 bool hudSetFlags(RemotePlayer *player, u32 flags, u32 mask);
321 bool hudSetHotbarItemcount(RemotePlayer *player, s32 hotbar_itemcount);
322 s32 hudGetHotbarItemcount(RemotePlayer *player) const
323 { return player->getHotbarItemcount(); }
324 void hudSetHotbarImage(RemotePlayer *player, std::string name);
325 std::string hudGetHotbarImage(RemotePlayer *player);
326 void hudSetHotbarSelectedImage(RemotePlayer *player, std::string name);
327 const std::string &hudGetHotbarSelectedImage(RemotePlayer *player) const
329 return player->getHotbarSelectedImage();
332 inline Address getPeerAddress(u16 peer_id)
333 { return m_con.GetPeerAddress(peer_id); }
335 bool setLocalPlayerAnimations(RemotePlayer *player, v2s32 animation_frames[4],
337 bool setPlayerEyeOffset(RemotePlayer *player, v3f first, v3f third);
339 bool setSky(RemotePlayer *player, const video::SColor &bgcolor,
340 const std::string &type, const std::vector<std::string> ¶ms);
342 bool overrideDayNightRatio(RemotePlayer *player, bool do_override, float brightness);
344 /* con::PeerHandler implementation. */
345 void peerAdded(con::Peer *peer);
346 void deletingPeer(con::Peer *peer, bool timeout);
348 void DenySudoAccess(u16 peer_id);
349 void DenyAccessVerCompliant(u16 peer_id, u16 proto_ver, AccessDeniedCode reason,
350 const std::string &str_reason = "", bool reconnect = false);
351 void DenyAccess(u16 peer_id, AccessDeniedCode reason, const std::string &custom_reason="");
352 void acceptAuth(u16 peer_id, bool forSudoMode);
353 void DenyAccess_Legacy(u16 peer_id, const std::wstring &reason);
354 bool getClientConInfo(u16 peer_id, con::rtt_stat_type type,float* retval);
355 bool getClientInfo(u16 peer_id,ClientState* state, u32* uptime,
356 u8* ser_vers, u16* prot_vers, u8* major, u8* minor, u8* patch,
357 std::string* vers_string);
359 void printToConsoleOnly(const std::string &text);
361 void SendPlayerHPOrDie(PlayerSAO *player);
362 void SendPlayerBreath(u16 peer_id);
363 void SendInventory(PlayerSAO* playerSAO);
364 void SendMovePlayer(u16 peer_id);
369 // Environment mutex (envlock)
374 friend class EmergeThread;
375 friend class RemoteClient;
377 void SendMovement(u16 peer_id);
378 void SendHP(u16 peer_id, u8 hp);
379 void SendBreath(u16 peer_id, u16 breath);
380 void SendAccessDenied(u16 peer_id, AccessDeniedCode reason,
381 const std::string &custom_reason, bool reconnect = false);
382 void SendAccessDenied_Legacy(u16 peer_id, const std::wstring &reason);
383 void SendDeathscreen(u16 peer_id,bool set_camera_point_target, v3f camera_point_target);
384 void SendItemDef(u16 peer_id,IItemDefManager *itemdef, u16 protocol_version);
385 void SendNodeDef(u16 peer_id,INodeDefManager *nodedef, u16 protocol_version);
387 /* mark blocks not sent for all clients */
388 void SetBlocksNotSent(std::map<v3s16, MapBlock *>& block);
391 void SendChatMessage(u16 peer_id, const std::wstring &message);
392 void SendTimeOfDay(u16 peer_id, u16 time, f32 time_speed);
393 void SendPlayerHP(u16 peer_id);
395 void SendLocalPlayerAnimations(u16 peer_id, v2s32 animation_frames[4], f32 animation_speed);
396 void SendEyeOffset(u16 peer_id, v3f first, v3f third);
397 void SendPlayerPrivileges(u16 peer_id);
398 void SendPlayerInventoryFormspec(u16 peer_id);
399 void SendShowFormspecMessage(u16 peer_id, const std::string &formspec, const std::string &formname);
400 void SendHUDAdd(u16 peer_id, u32 id, HudElement *form);
401 void SendHUDRemove(u16 peer_id, u32 id);
402 void SendHUDChange(u16 peer_id, u32 id, HudElementStat stat, void *value);
403 void SendHUDSetFlags(u16 peer_id, u32 flags, u32 mask);
404 void SendHUDSetParam(u16 peer_id, u16 param, const std::string &value);
405 void SendSetSky(u16 peer_id, const video::SColor &bgcolor,
406 const std::string &type, const std::vector<std::string> ¶ms);
407 void SendOverrideDayNightRatio(u16 peer_id, bool do_override, float ratio);
410 Send a node removal/addition event to all clients except ignore_id.
411 Additionally, if far_players!=NULL, players further away than
412 far_d_nodes are ignored and their peer_ids are added to far_players
414 // Envlock and conlock should be locked when calling these
415 void sendRemoveNode(v3s16 p, u16 ignore_id=0,
416 std::vector<u16> *far_players=NULL, float far_d_nodes=100);
417 void sendAddNode(v3s16 p, MapNode n, u16 ignore_id=0,
418 std::vector<u16> *far_players=NULL, float far_d_nodes=100,
419 bool remove_metadata=true);
420 void setBlockNotSent(v3s16 p);
422 // Environment and Connection must be locked when called
423 void SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver, u16 net_proto_version);
425 // Sends blocks to clients (locks env and con on its own)
426 void SendBlocks(float dtime);
428 void fillMediaCache();
429 void sendMediaAnnouncement(u16 peer_id);
430 void sendRequestedMedia(u16 peer_id,
431 const std::vector<std::string> &tosend);
433 void sendDetachedInventory(const std::string &name, u16 peer_id);
434 void sendDetachedInventories(u16 peer_id);
436 // Adds a ParticleSpawner on peer with peer_id (PEER_ID_INEXISTENT == all)
437 void SendAddParticleSpawner(u16 peer_id, u16 amount, float spawntime,
438 v3f minpos, v3f maxpos,
439 v3f minvel, v3f maxvel,
440 v3f minacc, v3f maxacc,
441 float minexptime, float maxexptime,
442 float minsize, float maxsize,
443 bool collisiondetection, bool collision_removal,
445 bool vertical, const std::string &texture, u32 id);
447 void SendDeleteParticleSpawner(u16 peer_id, u32 id);
449 // Spawns particle on peer with peer_id (PEER_ID_INEXISTENT == all)
450 void SendSpawnParticle(u16 peer_id,
451 v3f pos, v3f velocity, v3f acceleration,
452 float expirationtime, float size,
453 bool collisiondetection, bool collision_removal,
454 bool vertical, const std::string &texture);
456 u32 SendActiveObjectRemoveAdd(u16 peer_id, const std::string &datas);
457 void SendActiveObjectMessages(u16 peer_id, const std::string &datas, bool reliable = true);
462 void DiePlayer(u16 peer_id);
463 void RespawnPlayer(u16 peer_id);
464 void DeleteClient(u16 peer_id, ClientDeletionReason reason);
465 void UpdateCrafting(RemotePlayer *player);
467 void handleChatInterfaceEvent(ChatEvent *evt);
469 // This returns the answer to the sender of wmessage, or "" if there is none
470 std::wstring handleChat(const std::string &name, const std::wstring &wname,
471 const std::wstring &wmessage,
472 bool check_shout_priv = false,
473 RemotePlayer *player = NULL);
474 void handleAdminChat(const ChatEventChat *evt);
478 // When called, connection mutex should be locked
479 RemoteClient* getClient(u16 peer_id,ClientState state_min=CS_Active);
480 RemoteClient* getClientNoEx(u16 peer_id,ClientState state_min=CS_Active);
482 // When called, environment mutex should be locked
483 std::string getPlayerName(u16 peer_id);
484 PlayerSAO* getPlayerSAO(u16 peer_id);
487 Get a player from memory or creates one.
488 If player is already connected, return NULL
489 Does not verify/modify auth info and password.
491 Call with env and con locked.
493 PlayerSAO *emergePlayer(const char *name, u16 peer_id, u16 proto_version);
495 void handlePeerChanges();
502 std::string m_path_world;
503 // Subgame specification
504 SubgameSpec m_gamespec;
505 // If true, do not allow multiple players and hide some multiplayer
507 bool m_simple_singleplayer_mode;
508 u16 m_max_chatmessage_length;
510 // Thread can set; step() will throw as ServerError
511 MutexedVariable<std::string> m_async_fatal_error;
514 float m_liquid_transform_timer;
515 float m_liquid_transform_every;
516 float m_masterserver_timer;
517 float m_emergethread_trigger_timer;
518 float m_savemap_timer;
519 IntervalLimiter m_map_timer_and_unload_interval;
522 ServerEnvironment *m_env;
525 con::Connection m_con;
528 BanManager *m_banmanager;
530 // Rollback manager (behind m_env_mutex)
531 IRollbackManager *m_rollback;
532 bool m_enable_rollback_recording; // Updated once in a while
535 EmergeManager *m_emerge;
538 // Envlock and conlock should be locked when using Lua
539 GameScripting *m_script;
541 // Item definition manager
542 IWritableItemDefManager *m_itemdef;
544 // Node definition manager
545 IWritableNodeDefManager *m_nodedef;
547 // Craft definition manager
548 IWritableCraftDefManager *m_craftdef;
551 EventManager *m_event;
554 std::vector<ModSpec> m_mods;
560 // A buffer for time steps
561 // step() increments and AsyncRunStep() run by m_thread reads it.
563 Mutex m_step_dtime_mutex;
565 // current server step lag counter
568 // The server mainly operates in this thread
569 ServerThread *m_thread;
575 // Timer for sending time of day over network
576 float m_time_of_day_send_timer;
577 // Uptime of server in seconds
578 MutexedVariable<double> m_uptime;
583 ClientInterface m_clients;
587 Queues stuff from peerAdded() and deletingPeer() to
590 std::queue<con::PeerChange> m_peer_change_queue;
596 bool m_shutdown_requested;
597 std::string m_shutdown_msg;
598 bool m_shutdown_ask_reconnect;
600 ChatInterface *m_admin_chat;
601 std::string m_admin_nick;
604 Map edit event queue. Automatically receives all map edits.
605 The constructor of this class registers us to receive them through
608 NOTE: Should these be moved to actually be members of
613 Queue of map edits from the environment for sending to the clients
614 This is behind m_env_mutex
616 std::queue<MapEditEvent*> m_unsent_map_edit_queue;
618 Set to true when the server itself is modifying the map and does
619 all sending of information by itself.
620 This is behind m_env_mutex
622 bool m_ignore_map_edit_events;
624 If a non-empty area, map edit events contained within are left
625 unsent. Done at map generation time to speed up editing of the
626 generated area, as it will be sent anyway.
627 This is behind m_env_mutex
629 VoxelArea m_ignore_map_edit_events_area;
631 If set to !=0, the incoming MapEditEvents are modified to have
632 this peed id as the disabled recipient
633 This is behind m_env_mutex
635 u16 m_ignore_map_edit_events_peer_id;
637 // media files known to server
638 UNORDERED_MAP<std::string, MediaInfo> m_media;
643 UNORDERED_MAP<s32, ServerPlayingSound> m_playing_sounds;
647 Detached inventories (behind m_env_mutex)
650 std::map<std::string, Inventory*> m_detached_inventories;
651 // value = "" (visible to all players) or player name
652 std::map<std::string, std::string> m_detached_inventories_player;
654 DISABLE_CLASS_COPY(Server);
658 Runs a simple dedicated server loop.
660 Shuts down when kill is set to true.
662 void dedicated_server_loop(Server &server, bool &kill);