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
35 typedef struct lua_State lua_State;
36 class IWritableToolDefManager;
37 class IWritableNodeDefManager;
38 class IWritableCraftDefManager;
39 class IWritableCraftItemDefManager;
44 v3f findSpawnPos(ServerMap &map);
47 A structure containing the data needed for queueing the fetching
50 struct QueuedBlockEmerge
53 // key = peer_id, value = flags
54 core::map<u16, u8> peer_ids;
58 This is a thread-safe class.
60 class BlockEmergeQueue
70 JMutexAutoLock lock(m_mutex);
72 core::list<QueuedBlockEmerge*>::Iterator i;
73 for(i=m_queue.begin(); i!=m_queue.end(); i++)
75 QueuedBlockEmerge *q = *i;
81 peer_id=0 adds with nobody to send to
83 void addBlock(u16 peer_id, v3s16 pos, u8 flags)
85 DSTACK(__FUNCTION_NAME);
87 JMutexAutoLock lock(m_mutex);
92 Find if block is already in queue.
93 If it is, update the peer to it and quit.
95 core::list<QueuedBlockEmerge*>::Iterator i;
96 for(i=m_queue.begin(); i!=m_queue.end(); i++)
98 QueuedBlockEmerge *q = *i;
101 q->peer_ids[peer_id] = flags;
110 QueuedBlockEmerge *q = new QueuedBlockEmerge;
113 q->peer_ids[peer_id] = flags;
114 m_queue.push_back(q);
117 // Returned pointer must be deleted
118 // Returns NULL if queue is empty
119 QueuedBlockEmerge * pop()
121 JMutexAutoLock lock(m_mutex);
123 core::list<QueuedBlockEmerge*>::Iterator i = m_queue.begin();
124 if(i == m_queue.end())
126 QueuedBlockEmerge *q = *i;
133 JMutexAutoLock lock(m_mutex);
134 return m_queue.size();
137 u32 peerItemCount(u16 peer_id)
139 JMutexAutoLock lock(m_mutex);
143 core::list<QueuedBlockEmerge*>::Iterator i;
144 for(i=m_queue.begin(); i!=m_queue.end(); i++)
146 QueuedBlockEmerge *q = *i;
147 if(q->peer_ids.find(peer_id) != NULL)
155 core::list<QueuedBlockEmerge*> m_queue;
161 class ServerThread : public SimpleThread
167 ServerThread(Server *server):
176 class EmergeThread : public SimpleThread
182 EmergeThread(Server *server):
193 if(IsRunning() == false)
203 char name[PLAYERNAME_SIZE];
209 void PrintLine(std::ostream *s);
212 u32 PIChecksum(core::list<PlayerInfo> &l);
215 Used for queueing and sorting block transfers in containers
217 Lower priority number means higher priority.
219 struct PrioritySortedBlockTransfer
221 PrioritySortedBlockTransfer(float a_priority, v3s16 a_pos, u16 a_peer_id)
223 priority = a_priority;
227 bool operator < (PrioritySortedBlockTransfer &other)
229 return priority < other.priority;
239 // peer_id=0 means this client has no associated peer
240 // NOTE: If client is made allowed to exist while peer doesn't,
241 // this has to be set to 0 when there is no peer.
242 // Also, the client must be moved to some other container.
244 // The serialization version to use with the client
245 u8 serialization_version;
247 u16 net_proto_version;
248 // Version is stored in here after INIT before INIT2
249 u8 pending_serialization_version;
252 m_time_from_building(9999),
253 m_excess_gotblocks(0)
256 serialization_version = SER_FMT_VER_INVALID;
257 net_proto_version = 0;
258 pending_serialization_version = SER_FMT_VER_INVALID;
259 m_nearest_unsent_d = 0;
260 m_nearest_unsent_reset_timer = 0.0;
261 m_nothing_to_send_counter = 0;
262 m_nothing_to_send_pause_timer = 0;
269 Finds block that should be sent next to the client.
270 Environment should be locked when this is called.
271 dtime is used for resetting send radius at slow interval
273 void GetNextBlocks(Server *server, float dtime,
274 core::array<PrioritySortedBlockTransfer> &dest);
277 Connection and environment should be locked when this is called.
278 steps() objects of blocks not found in active_blocks, then
279 adds those blocks to active_blocks
284 core::map<v3s16, bool> &stepped_blocks
287 void GotBlock(v3s16 p);
289 void SentBlock(v3s16 p);
291 void SetBlockNotSent(v3s16 p);
292 void SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks);
296 return m_blocks_sending.size();
299 // Increments timeouts and removes timed-out blocks from list
300 // NOTE: This doesn't fix the server-not-sending-block bug
301 // because it is related to emerging, not sending.
302 //void RunSendingTimeouts(float dtime, float timeout);
304 void PrintInfo(std::ostream &o)
306 o<<"RemoteClient "<<peer_id<<": "
307 <<"m_blocks_sent.size()="<<m_blocks_sent.size()
308 <<", m_blocks_sending.size()="<<m_blocks_sending.size()
309 <<", m_nearest_unsent_d="<<m_nearest_unsent_d
310 <<", m_excess_gotblocks="<<m_excess_gotblocks
312 m_excess_gotblocks = 0;
315 // Time from last placing or removing blocks
316 float m_time_from_building;
318 /*JMutex m_dig_mutex;
319 float m_dig_time_remaining;
322 v3s16 m_dig_position;*/
325 List of active objects that the client knows of.
328 core::map<u16, bool> m_known_objects;
332 Blocks that have been sent to client.
333 - These don't have to be sent again.
334 - A block is cleared from here when client says it has
335 deleted it from it's memory
337 Key is position, value is dummy.
338 No MapBlock* is stored here because the blocks can get deleted.
340 core::map<v3s16, bool> m_blocks_sent;
341 s16 m_nearest_unsent_d;
343 float m_nearest_unsent_reset_timer;
346 Blocks that are currently on the line.
347 This is used for throttling the sending of blocks.
348 - The size of this list is limited to some value
349 Block is added when it is sent with BLOCKDATA.
350 Block is removed when GOTBLOCKS is received.
351 Value is time from sending. (not used at the moment)
353 core::map<v3s16, float> m_blocks_sending;
356 Count of excess GotBlocks().
357 There is an excess amount because the client sometimes
358 gets a block so late that the server sends it again,
359 and the client then sends two GOTBLOCKs.
360 This is resetted by PrintInfo()
362 u32 m_excess_gotblocks;
364 // CPU usage optimization
365 u32 m_nothing_to_send_counter;
366 float m_nothing_to_send_pause_timer;
369 class Server : public con::PeerHandler, public MapEventReceiver,
370 public InventoryManager, public IGameDef,
371 public IBackgroundBlockEmerger
375 NOTE: Every public method should be thread-safe
379 std::string mapsavedir,
380 std::string configpath
383 void start(unsigned short port);
385 // This is mainly a way to pass the time to the server.
386 // Actual processing is done in an another thread.
387 void step(float dtime);
388 // This is run by ServerThread and does the actual processing
391 void ProcessData(u8 *data, u32 datasize, u16 peer_id);
393 core::list<PlayerInfo> getPlayerInfo();
395 /*u32 getDayNightRatio()
397 return time_to_daynight_ratio(m_time_of_day.get());
400 // Environment must be locked when called
401 void setTimeOfDay(u32 time)
403 m_env->setTimeOfDay(time);
404 m_time_of_day_send_timer = 0;
407 bool getShutdownRequested()
409 return m_shutdown_requested;
413 Shall be called with the environment locked.
414 This is accessed by the map, which is inside the environment,
415 so it shouldn't be a problem.
417 void onMapEditEvent(MapEditEvent *event);
420 Shall be called with the environment and the connection locked.
422 Inventory* getInventory(InventoryContext *c, std::string id);
423 void inventoryModified(InventoryContext *c, std::string id);
425 // Connection must be locked when called
426 std::wstring getStatusString();
428 void requestShutdown(void)
430 m_shutdown_requested = true;
434 // Envlock and conlock should be locked when calling this
435 void SendMovePlayer(Player *player);
437 u64 getPlayerAuthPrivs(const std::string &name)
440 return m_authmanager.getPrivs(name);
442 catch(AuthNotFoundException &e)
444 dstream<<"WARNING: Auth not found for "<<name<<std::endl;
449 void setPlayerAuthPrivs(const std::string &name, u64 privs)
452 return m_authmanager.setPrivs(name, privs);
454 catch(AuthNotFoundException &e)
456 dstream<<"WARNING: Auth not found for "<<name<<std::endl;
460 // Saves g_settings to configpath given at initialization
463 void setIpBanned(const std::string &ip, const std::string &name)
465 m_banmanager.add(ip, name);
469 void unsetIpBanned(const std::string &ip_or_name)
471 m_banmanager.remove(ip_or_name);
475 std::string getBanDescription(const std::string &ip_or_name)
477 return m_banmanager.getBanDescription(ip_or_name);
480 Address getPeerAddress(u16 peer_id)
482 return m_con.GetPeerAddress(peer_id);
485 // Envlock and conlock should be locked when calling this
486 void notifyPlayer(const char *name, const std::wstring msg);
487 void notifyPlayers(const std::wstring msg);
489 void queueBlockEmerge(v3s16 blockpos, bool allow_generate);
491 // Envlock and conlock should be locked when using Lua
492 lua_State *getLua(){ return m_lua; }
494 // IGameDef interface
496 virtual IToolDefManager* getToolDefManager();
497 virtual INodeDefManager* getNodeDefManager();
498 virtual ICraftDefManager* getCraftDefManager();
499 virtual ICraftItemDefManager* getCraftItemDefManager();
500 virtual ITextureSource* getTextureSource();
501 virtual u16 allocateUnknownNodeId(const std::string &name);
503 IWritableToolDefManager* getWritableToolDefManager();
504 IWritableNodeDefManager* getWritableNodeDefManager();
505 IWritableCraftDefManager* getWritableCraftDefManager();
506 IWritableCraftItemDefManager* getWritableCraftItemDefManager();
510 // con::PeerHandler implementation.
511 // These queue stuff to be processed by handlePeerChanges().
512 // As of now, these create and remove clients and players.
513 void peerAdded(con::Peer *peer);
514 void deletingPeer(con::Peer *peer, bool timeout);
520 static void SendHP(con::Connection &con, u16 peer_id, u8 hp);
521 static void SendAccessDenied(con::Connection &con, u16 peer_id,
522 const std::wstring &reason);
523 static void SendDeathscreen(con::Connection &con, u16 peer_id,
524 bool set_camera_point_target, v3f camera_point_target);
525 static void SendToolDef(con::Connection &con, u16 peer_id,
526 IToolDefManager *tooldef);
527 static void SendNodeDef(con::Connection &con, u16 peer_id,
528 INodeDefManager *nodedef);
529 static void SendCraftItemDef(con::Connection &con, u16 peer_id,
530 ICraftItemDefManager *nodedef);
533 Non-static send methods.
534 Conlock should be always used.
535 Envlock usage is documented badly but it's easy to figure out
536 which ones access the environment.
539 // Envlock and conlock should be locked when calling these
540 void SendObjectData(float dtime);
541 void SendPlayerInfos();
542 void SendInventory(u16 peer_id);
543 // send wielded item info about player to all
544 void SendWieldedItem(const Player *player);
545 // send wielded item info about all players to all players
546 void SendPlayerItems();
547 void SendChatMessage(u16 peer_id, const std::wstring &message);
548 void BroadcastChatMessage(const std::wstring &message);
549 void SendPlayerHP(Player *player);
551 Send a node removal/addition event to all clients except ignore_id.
552 Additionally, if far_players!=NULL, players further away than
553 far_d_nodes are ignored and their peer_ids are added to far_players
555 // Envlock and conlock should be locked when calling these
556 void sendRemoveNode(v3s16 p, u16 ignore_id=0,
557 core::list<u16> *far_players=NULL, float far_d_nodes=100);
558 void sendAddNode(v3s16 p, MapNode n, u16 ignore_id=0,
559 core::list<u16> *far_players=NULL, float far_d_nodes=100);
560 void setBlockNotSent(v3s16 p);
562 // Environment and Connection must be locked when called
563 void SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver);
565 // Sends blocks to clients (locks env and con on its own)
566 void SendBlocks(float dtime);
568 void SendTextures(u16 peer_id);
574 void HandlePlayerHP(Player *player, s16 damage);
575 void RespawnPlayer(Player *player);
577 void UpdateCrafting(u16 peer_id);
579 // When called, connection mutex should be locked
580 RemoteClient* getClient(u16 peer_id);
582 // When called, environment mutex should be locked
583 std::string getPlayerName(u16 peer_id)
585 Player *player = m_env->getPlayer(peer_id);
587 return "[id="+itos(peer_id);
588 return player->getName();
592 Get a player from memory or creates one.
593 If player is already connected, return NULL
594 The password is not checked here - it is only used to
595 set the password if a new player is created.
597 Call with env and con locked.
599 Player *emergePlayer(const char *name, const char *password, u16 peer_id);
601 // Locks environment and connection by its own
603 void handlePeerChange(PeerChange &c);
604 void handlePeerChanges();
606 u64 getPlayerPrivs(Player *player);
613 float m_liquid_transform_timer;
614 float m_print_info_timer;
615 float m_objectdata_timer;
616 float m_emergethread_trigger_timer;
617 float m_savemap_timer;
618 IntervalLimiter m_map_timer_and_unload_interval;
620 // NOTE: If connection and environment are both to be locked,
621 // environment shall be locked first.
624 ServerEnvironment *m_env;
628 con::Connection m_con;
630 // Connected clients (behind the con mutex)
631 core::map<u16, RemoteClient*> m_clients;
633 // User authentication
634 AuthManager m_authmanager;
637 BanManager m_banmanager;
640 // Envlock and conlock should be locked when using Lua
643 // Tool definition manager
644 IWritableToolDefManager *m_toolmgr;
646 // Node definition manager
647 IWritableNodeDefManager *m_nodedef;
649 // Craft definition manager
650 IWritableCraftDefManager *m_craftdef;
652 // CraftItem definition manager
653 IWritableCraftItemDefManager *m_craftitemdef;
659 // A buffer for time steps
660 // step() increments and AsyncRunStep() run by m_thread reads it.
662 JMutex m_step_dtime_mutex;
664 // The server mainly operates in this thread
665 ServerThread m_thread;
666 // This thread fetches and generates map
667 EmergeThread m_emergethread;
668 // Queue of block coordinates to be processed by the emerge thread
669 BlockEmergeQueue m_emerge_queue;
676 //MutexedVariable<u32> m_time_of_day;
677 // Used to buffer dtime for adding to m_time_of_day
678 float m_time_counter;
679 // Timer for sending time of day over network
680 float m_time_of_day_send_timer;
681 // Uptime of server in seconds
682 MutexedVariable<double> m_uptime;
686 Queues stuff from peerAdded() and deletingPeer() to
700 Queue<PeerChange> m_peer_change_queue;
707 std::string m_mapsavedir;
709 // Configuration path ("" = no configuration file)
710 std::string m_configpath;
712 // Mod parent directory paths
713 core::list<std::string> m_modspaths;
715 bool m_shutdown_requested;
718 Map edit event queue. Automatically receives all map edits.
719 The constructor of this class registers us to receive them through
722 NOTE: Should these be moved to actually be members of
727 Queue of map edits from the environment for sending to the clients
728 This is behind m_env_mutex
730 Queue<MapEditEvent*> m_unsent_map_edit_queue;
732 Set to true when the server itself is modifying the map and does
733 all sending of information by itself.
734 This is behind m_env_mutex
736 bool m_ignore_map_edit_events;
738 If set to !=0, the incoming MapEditEvents are modified to have
739 this peed id as the disabled recipient
740 This is behind m_env_mutex
742 u16 m_ignore_map_edit_events_peer_id;
744 friend class EmergeThread;
745 friend class RemoteClient;
749 Runs a simple dedicated server loop.
751 Shuts down when run is set to false.
753 void dedicated_server_loop(Server &server, bool &run);