3 Copyright (C) 2010-2011 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 General Public License as published by
7 the Free Software Foundation; either version 2 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 General Public License for more details.
15 You should have received a copy of the GNU 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"
24 #include "environment.h"
25 #include "common_irrlicht.h"
29 #include "inventory.h"
33 #include "serialization.h" // For SER_FMT_VER_INVALID
34 #include "serverremoteplayer.h"
36 #include "inventorymanager.h"
38 typedef struct lua_State lua_State;
39 class IWritableToolDefManager;
40 class IWritableNodeDefManager;
41 class IWritableCraftDefManager;
42 class IWritableCraftItemDefManager;
47 v3f findSpawnPos(ServerMap &map);
50 A structure containing the data needed for queueing the fetching
53 struct QueuedBlockEmerge
56 // key = peer_id, value = flags
57 core::map<u16, u8> peer_ids;
61 This is a thread-safe class.
63 class BlockEmergeQueue
73 JMutexAutoLock lock(m_mutex);
75 core::list<QueuedBlockEmerge*>::Iterator i;
76 for(i=m_queue.begin(); i!=m_queue.end(); i++)
78 QueuedBlockEmerge *q = *i;
84 peer_id=0 adds with nobody to send to
86 void addBlock(u16 peer_id, v3s16 pos, u8 flags)
88 DSTACK(__FUNCTION_NAME);
90 JMutexAutoLock lock(m_mutex);
95 Find if block is already in queue.
96 If it is, update the peer to it and quit.
98 core::list<QueuedBlockEmerge*>::Iterator i;
99 for(i=m_queue.begin(); i!=m_queue.end(); i++)
101 QueuedBlockEmerge *q = *i;
104 q->peer_ids[peer_id] = flags;
113 QueuedBlockEmerge *q = new QueuedBlockEmerge;
116 q->peer_ids[peer_id] = flags;
117 m_queue.push_back(q);
120 // Returned pointer must be deleted
121 // Returns NULL if queue is empty
122 QueuedBlockEmerge * pop()
124 JMutexAutoLock lock(m_mutex);
126 core::list<QueuedBlockEmerge*>::Iterator i = m_queue.begin();
127 if(i == m_queue.end())
129 QueuedBlockEmerge *q = *i;
136 JMutexAutoLock lock(m_mutex);
137 return m_queue.size();
140 u32 peerItemCount(u16 peer_id)
142 JMutexAutoLock lock(m_mutex);
146 core::list<QueuedBlockEmerge*>::Iterator i;
147 for(i=m_queue.begin(); i!=m_queue.end(); i++)
149 QueuedBlockEmerge *q = *i;
150 if(q->peer_ids.find(peer_id) != NULL)
158 core::list<QueuedBlockEmerge*> m_queue;
164 class ServerThread : public SimpleThread
170 ServerThread(Server *server):
179 class EmergeThread : public SimpleThread
185 EmergeThread(Server *server):
196 if(IsRunning() == false)
206 char name[PLAYERNAME_SIZE];
212 void PrintLine(std::ostream *s);
215 u32 PIChecksum(core::list<PlayerInfo> &l);
218 Used for queueing and sorting block transfers in containers
220 Lower priority number means higher priority.
222 struct PrioritySortedBlockTransfer
224 PrioritySortedBlockTransfer(float a_priority, v3s16 a_pos, u16 a_peer_id)
226 priority = a_priority;
230 bool operator < (PrioritySortedBlockTransfer &other)
232 return priority < other.priority;
242 // peer_id=0 means this client has no associated peer
243 // NOTE: If client is made allowed to exist while peer doesn't,
244 // this has to be set to 0 when there is no peer.
245 // Also, the client must be moved to some other container.
247 // The serialization version to use with the client
248 u8 serialization_version;
250 u16 net_proto_version;
251 // Version is stored in here after INIT before INIT2
252 u8 pending_serialization_version;
254 bool definitions_sent;
257 m_time_from_building(9999),
258 m_excess_gotblocks(0)
261 serialization_version = SER_FMT_VER_INVALID;
262 net_proto_version = 0;
263 pending_serialization_version = SER_FMT_VER_INVALID;
264 definitions_sent = false;
265 m_nearest_unsent_d = 0;
266 m_nearest_unsent_reset_timer = 0.0;
267 m_nothing_to_send_counter = 0;
268 m_nothing_to_send_pause_timer = 0;
275 Finds block that should be sent next to the client.
276 Environment should be locked when this is called.
277 dtime is used for resetting send radius at slow interval
279 void GetNextBlocks(Server *server, float dtime,
280 core::array<PrioritySortedBlockTransfer> &dest);
282 void GotBlock(v3s16 p);
284 void SentBlock(v3s16 p);
286 void SetBlockNotSent(v3s16 p);
287 void SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks);
291 return m_blocks_sending.size();
294 // Increments timeouts and removes timed-out blocks from list
295 // NOTE: This doesn't fix the server-not-sending-block bug
296 // because it is related to emerging, not sending.
297 //void RunSendingTimeouts(float dtime, float timeout);
299 void PrintInfo(std::ostream &o)
301 o<<"RemoteClient "<<peer_id<<": "
302 <<"m_blocks_sent.size()="<<m_blocks_sent.size()
303 <<", m_blocks_sending.size()="<<m_blocks_sending.size()
304 <<", m_nearest_unsent_d="<<m_nearest_unsent_d
305 <<", m_excess_gotblocks="<<m_excess_gotblocks
307 m_excess_gotblocks = 0;
310 // Time from last placing or removing blocks
311 float m_time_from_building;
313 /*JMutex m_dig_mutex;
314 float m_dig_time_remaining;
317 v3s16 m_dig_position;*/
320 List of active objects that the client knows of.
323 core::map<u16, bool> m_known_objects;
327 Blocks that have been sent to client.
328 - These don't have to be sent again.
329 - A block is cleared from here when client says it has
330 deleted it from it's memory
332 Key is position, value is dummy.
333 No MapBlock* is stored here because the blocks can get deleted.
335 core::map<v3s16, bool> m_blocks_sent;
336 s16 m_nearest_unsent_d;
338 float m_nearest_unsent_reset_timer;
341 Blocks that are currently on the line.
342 This is used for throttling the sending of blocks.
343 - The size of this list is limited to some value
344 Block is added when it is sent with BLOCKDATA.
345 Block is removed when GOTBLOCKS is received.
346 Value is time from sending. (not used at the moment)
348 core::map<v3s16, float> m_blocks_sending;
351 Count of excess GotBlocks().
352 There is an excess amount because the client sometimes
353 gets a block so late that the server sends it again,
354 and the client then sends two GOTBLOCKs.
355 This is resetted by PrintInfo()
357 u32 m_excess_gotblocks;
359 // CPU usage optimization
360 u32 m_nothing_to_send_counter;
361 float m_nothing_to_send_pause_timer;
364 class Server : public con::PeerHandler, public MapEventReceiver,
365 public InventoryManager, public IGameDef,
366 public IBackgroundBlockEmerger
370 NOTE: Every public method should be thread-safe
374 std::string mapsavedir,
375 std::string configpath
378 void start(unsigned short port);
380 // This is mainly a way to pass the time to the server.
381 // Actual processing is done in an another thread.
382 void step(float dtime);
383 // This is run by ServerThread and does the actual processing
386 void ProcessData(u8 *data, u32 datasize, u16 peer_id);
388 core::list<PlayerInfo> getPlayerInfo();
390 /*u32 getDayNightRatio()
392 return time_to_daynight_ratio(m_time_of_day.get());
395 // Environment must be locked when called
396 void setTimeOfDay(u32 time)
398 m_env->setTimeOfDay(time);
399 m_time_of_day_send_timer = 0;
402 bool getShutdownRequested()
404 return m_shutdown_requested;
408 Shall be called with the environment locked.
409 This is accessed by the map, which is inside the environment,
410 so it shouldn't be a problem.
412 void onMapEditEvent(MapEditEvent *event);
415 Shall be called with the environment and the connection locked.
417 Inventory* getInventory(const InventoryLocation &loc);
418 void setInventoryModified(const InventoryLocation &loc);
420 // Connection must be locked when called
421 std::wstring getStatusString();
423 void requestShutdown(void)
425 m_shutdown_requested = true;
429 // Envlock and conlock should be locked when calling this
430 void SendMovePlayer(Player *player);
432 u64 getPlayerAuthPrivs(const std::string &name)
435 return m_authmanager.getPrivs(name);
437 catch(AuthNotFoundException &e)
439 dstream<<"WARNING: Auth not found for "<<name<<std::endl;
444 void setPlayerAuthPrivs(const std::string &name, u64 privs)
447 return m_authmanager.setPrivs(name, privs);
449 catch(AuthNotFoundException &e)
451 dstream<<"WARNING: Auth not found for "<<name<<std::endl;
455 // Changes a player's password, password must be given as plaintext
456 // If the player doesn't exist, a new entry is added to the auth manager
457 void setPlayerPassword(const std::string &name, const std::wstring &password);
459 // Saves g_settings to configpath given at initialization
462 void setIpBanned(const std::string &ip, const std::string &name)
464 m_banmanager.add(ip, name);
468 void unsetIpBanned(const std::string &ip_or_name)
470 m_banmanager.remove(ip_or_name);
474 std::string getBanDescription(const std::string &ip_or_name)
476 return m_banmanager.getBanDescription(ip_or_name);
479 Address getPeerAddress(u16 peer_id)
481 return m_con.GetPeerAddress(peer_id);
484 // Envlock and conlock should be locked when calling this
485 void notifyPlayer(const char *name, const std::wstring msg);
486 void notifyPlayers(const std::wstring msg);
488 void queueBlockEmerge(v3s16 blockpos, bool allow_generate);
490 // Envlock and conlock should be locked when using Lua
491 lua_State *getLua(){ return m_lua; }
493 // IGameDef interface
495 virtual IToolDefManager* getToolDefManager();
496 virtual INodeDefManager* getNodeDefManager();
497 virtual ICraftDefManager* getCraftDefManager();
498 virtual ICraftItemDefManager* getCraftItemDefManager();
499 virtual ITextureSource* getTextureSource();
500 virtual u16 allocateUnknownNodeId(const std::string &name);
502 IWritableToolDefManager* getWritableToolDefManager();
503 IWritableNodeDefManager* getWritableNodeDefManager();
504 IWritableCraftDefManager* getWritableCraftDefManager();
505 IWritableCraftItemDefManager* getWritableCraftItemDefManager();
507 const ModSpec* getModSpec(const std::string &modname);
511 // con::PeerHandler implementation.
512 // These queue stuff to be processed by handlePeerChanges().
513 // As of now, these create and remove clients and players.
514 void peerAdded(con::Peer *peer);
515 void deletingPeer(con::Peer *peer, bool timeout);
521 static void SendHP(con::Connection &con, u16 peer_id, u8 hp);
522 static void SendAccessDenied(con::Connection &con, u16 peer_id,
523 const std::wstring &reason);
524 static void SendDeathscreen(con::Connection &con, u16 peer_id,
525 bool set_camera_point_target, v3f camera_point_target);
526 static void SendToolDef(con::Connection &con, u16 peer_id,
527 IToolDefManager *tooldef);
528 static void SendNodeDef(con::Connection &con, u16 peer_id,
529 INodeDefManager *nodedef);
530 static void SendCraftItemDef(con::Connection &con, u16 peer_id,
531 ICraftItemDefManager *nodedef);
534 Non-static send methods.
535 Conlock should be always used.
536 Envlock usage is documented badly but it's easy to figure out
537 which ones access the environment.
540 // Envlock and conlock should be locked when calling these
541 void SendInventory(u16 peer_id);
542 // send wielded item info about player to all
543 void SendWieldedItem(const Player *player);
544 // send wielded item info about all players to all players
545 void SendPlayerItems();
546 void SendChatMessage(u16 peer_id, const std::wstring &message);
547 void BroadcastChatMessage(const std::wstring &message);
548 void SendPlayerHP(Player *player);
550 Send a node removal/addition event to all clients except ignore_id.
551 Additionally, if far_players!=NULL, players further away than
552 far_d_nodes are ignored and their peer_ids are added to far_players
554 // Envlock and conlock should be locked when calling these
555 void sendRemoveNode(v3s16 p, u16 ignore_id=0,
556 core::list<u16> *far_players=NULL, float far_d_nodes=100);
557 void sendAddNode(v3s16 p, MapNode n, u16 ignore_id=0,
558 core::list<u16> *far_players=NULL, float far_d_nodes=100);
559 void setBlockNotSent(v3s16 p);
561 // Environment and Connection must be locked when called
562 void SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver);
564 // Sends blocks to clients (locks env and con on its own)
565 void SendBlocks(float dtime);
567 void SendTextures(u16 peer_id);
573 void HandlePlayerHP(Player *player, s16 damage);
574 void RespawnPlayer(Player *player);
576 void UpdateCrafting(u16 peer_id);
578 // When called, connection mutex should be locked
579 RemoteClient* getClient(u16 peer_id);
581 // When called, environment mutex should be locked
582 std::string getPlayerName(u16 peer_id)
584 Player *player = m_env->getPlayer(peer_id);
586 return "[id="+itos(peer_id);
587 return player->getName();
591 Get a player from memory or creates one.
592 If player is already connected, return NULL
593 Does not verify/modify auth info and password.
595 Call with env and con locked.
597 ServerRemotePlayer *emergePlayer(const char *name, u16 peer_id);
599 // Locks environment and connection by its own
601 void handlePeerChange(PeerChange &c);
602 void handlePeerChanges();
604 u64 getPlayerPrivs(Player *player);
611 float m_liquid_transform_timer;
612 float m_print_info_timer;
613 float m_objectdata_timer;
614 float m_emergethread_trigger_timer;
615 float m_savemap_timer;
616 IntervalLimiter m_map_timer_and_unload_interval;
618 // NOTE: If connection and environment are both to be locked,
619 // environment shall be locked first.
622 ServerEnvironment *m_env;
626 con::Connection m_con;
628 // Connected clients (behind the con mutex)
629 core::map<u16, RemoteClient*> m_clients;
631 // User authentication
632 AuthManager m_authmanager;
635 BanManager m_banmanager;
638 // Envlock and conlock should be locked when using Lua
641 // Tool definition manager
642 IWritableToolDefManager *m_toolmgr;
644 // Node definition manager
645 IWritableNodeDefManager *m_nodedef;
647 // Craft definition manager
648 IWritableCraftDefManager *m_craftdef;
650 // CraftItem definition manager
651 IWritableCraftItemDefManager *m_craftitemdef;
654 core::list<ModSpec> m_mods;
660 // A buffer for time steps
661 // step() increments and AsyncRunStep() run by m_thread reads it.
663 JMutex m_step_dtime_mutex;
665 // The server mainly operates in this thread
666 ServerThread m_thread;
667 // This thread fetches and generates map
668 EmergeThread m_emergethread;
669 // Queue of block coordinates to be processed by the emerge thread
670 BlockEmergeQueue m_emerge_queue;
677 //MutexedVariable<u32> m_time_of_day;
678 // Used to buffer dtime for adding to m_time_of_day
679 float m_time_counter;
680 // Timer for sending time of day over network
681 float m_time_of_day_send_timer;
682 // Uptime of server in seconds
683 MutexedVariable<double> m_uptime;
687 Queues stuff from peerAdded() and deletingPeer() to
701 Queue<PeerChange> m_peer_change_queue;
708 std::string m_mapsavedir;
710 // Configuration path ("" = no configuration file)
711 std::string m_configpath;
713 // Mod parent directory paths
714 core::list<std::string> m_modspaths;
716 bool m_shutdown_requested;
719 Map edit event queue. Automatically receives all map edits.
720 The constructor of this class registers us to receive them through
723 NOTE: Should these be moved to actually be members of
728 Queue of map edits from the environment for sending to the clients
729 This is behind m_env_mutex
731 Queue<MapEditEvent*> m_unsent_map_edit_queue;
733 Set to true when the server itself is modifying the map and does
734 all sending of information by itself.
735 This is behind m_env_mutex
737 bool m_ignore_map_edit_events;
739 If set to !=0, the incoming MapEditEvents are modified to have
740 this peed id as the disabled recipient
741 This is behind m_env_mutex
743 u16 m_ignore_map_edit_events_peer_id;
745 friend class EmergeThread;
746 friend class RemoteClient;
750 Runs a simple dedicated server loop.
752 Shuts down when run is set to false.
754 void dedicated_server_loop(Server &server, bool &run);