src/client.h

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   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.
   9
  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.
  14
  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.
  18 */
  19
  20 #pragma once
  21
  22 #include "clientenvironment.h"
  23 #include "irrlichttypes_extrabloated.h"
  24 #include <ostream>
  25 #include <map>
  26 #include <set>
  27 #include <vector>
  28 #include <unordered_set>
  29 #include "clientobject.h"
  30 #include "gamedef.h"
  31 #include "inventorymanager.h"
  32 #include "localplayer.h"
  33 #include "hud.h"
  34 #include "particles.h"
  35 #include "mapnode.h"
  36 #include "tileanimation.h"
  37 #include "mesh_generator_thread.h"
  38 #include "network/address.h"
  39 #include "network/peerhandler.h"
  40 #include <fstream>
  41
  42 #define CLIENT_CHAT_MESSAGE_LIMIT_PER_10S 10.0f
  43
  44 struct ClientEvent;
  45 struct MeshMakeData;
  46 struct ChatMessage;
  47 class MapBlockMesh;
  48 class IWritableTextureSource;
  49 class IWritableShaderSource;
  50 class IWritableItemDefManager;
  51 class IWritableNodeDefManager;
  52 //class IWritableCraftDefManager;
  53 class ClientMediaDownloader;
  54 struct MapDrawControl;
  55 class ModChannelMgr;
  56 class MtEventManager;
  57 struct PointedThing;
  58 class MapDatabase;
  59 class Minimap;
  60 struct MinimapMapblock;
  61 class Camera;
  62 class NetworkPacket;
  63 namespace con {
  64 class Connection;
  65 }
  66
  67 enum LocalClientState {
  68         LC_Created,
  69         LC_Init,
  70         LC_Ready
  71 };
  72
  73 /*
  74         Packet counter
  75 */
  76
  77 class PacketCounter
  78 {
  79 public:
  80         PacketCounter() = default;
  81
  82         void add(u16 command)
  83         {
  84                 std::map<u16, u16>::iterator n = m_packets.find(command);
  85                 if(n == m_packets.end())
  86                 {
  87                         m_packets[command] = 1;
  88                 }
  89                 else
  90                 {
  91                         n->second++;
  92                 }
  93         }
  94
  95         void clear()
  96         {
  97                 for (auto &m_packet : m_packets) {
  98                         m_packet.second = 0;
  99                 }
 100         }
 101
 102         void print(std::ostream &o)
 103         {
 104                 for (const auto &m_packet : m_packets) {
 105                         o << "cmd "<< m_packet.first <<" count "<< m_packet.second << std::endl;
 106                 }
 107         }
 108
 109 private:
 110         // command, count
 111         std::map<u16, u16> m_packets;
 112 };
 113
 114 class ClientScripting;
 115 class GameUI;
 116
 117 class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 118 {
 119 public:
 120         /*
 121                 NOTE: Nothing is thread-safe here.
 122         */
 123
 124         Client(
 125                         const char *playername,
 126                         const std::string &password,
 127                         const std::string &address_name,
 128                         MapDrawControl &control,
 129                         IWritableTextureSource *tsrc,
 130                         IWritableShaderSource *shsrc,
 131                         IWritableItemDefManager *itemdef,
 132                         IWritableNodeDefManager *nodedef,
 133                         ISoundManager *sound,
 134                         MtEventManager *event,
 135                         bool ipv6,
 136                         GameUI *game_ui
 137         );
 138
 139         ~Client();
 140         DISABLE_CLASS_COPY(Client);
 141
 142         // Load local mods into memory
 143         void loadBuiltin();
 144         void scanModSubfolder(const std::string &mod_name, const std::string &mod_path,
 145                                 std::string mod_subpath);
 146         inline void scanModIntoMemory(const std::string &mod_name, const std::string &mod_path)
 147         {
 148                 scanModSubfolder(mod_name, mod_path, "");
 149         }
 150
 151         /*
 152          request all threads managed by client to be stopped
 153          */
 154         void Stop();
 155
 156
 157         bool isShutdown();
 158
 159         /*
 160                 The name of the local player should already be set when
 161                 calling this, as it is sent in the initialization.
 162         */
 163         void connect(Address address, bool is_local_server);
 164
 165         /*
 166                 Stuff that references the environment is valid only as
 167                 long as this is not called. (eg. Players)
 168                 If this throws a PeerNotFoundException, the connection has
 169                 timed out.
 170         */
 171         void step(float dtime);
 172
 173         /*
 174          * Command Handlers
 175          */
 176
 177         void handleCommand(NetworkPacket* pkt);
 178
 179         void handleCommand_Null(NetworkPacket* pkt) {};
 180         void handleCommand_Deprecated(NetworkPacket* pkt);
 181         void handleCommand_Hello(NetworkPacket* pkt);
 182         void handleCommand_AuthAccept(NetworkPacket* pkt);
 183         void handleCommand_AcceptSudoMode(NetworkPacket* pkt);
 184         void handleCommand_DenySudoMode(NetworkPacket* pkt);
 185         void handleCommand_AccessDenied(NetworkPacket* pkt);
 186         void handleCommand_RemoveNode(NetworkPacket* pkt);
 187         void handleCommand_AddNode(NetworkPacket* pkt);
 188         void handleCommand_BlockData(NetworkPacket* pkt);
 189         void handleCommand_Inventory(NetworkPacket* pkt);
 190         void handleCommand_TimeOfDay(NetworkPacket* pkt);
 191         void handleCommand_ChatMessageOld(NetworkPacket *pkt);
 192         void handleCommand_ChatMessage(NetworkPacket *pkt);
 193         void handleCommand_ActiveObjectRemoveAdd(NetworkPacket* pkt);
 194         void handleCommand_ActiveObjectMessages(NetworkPacket* pkt);
 195         void handleCommand_Movement(NetworkPacket* pkt);
 196         void handleCommand_HP(NetworkPacket* pkt);
 197         void handleCommand_Breath(NetworkPacket* pkt);
 198         void handleCommand_MovePlayer(NetworkPacket* pkt);
 199         void handleCommand_DeathScreen(NetworkPacket* pkt);
 200         void handleCommand_AnnounceMedia(NetworkPacket* pkt);
 201         void handleCommand_Media(NetworkPacket* pkt);
 202         void handleCommand_NodeDef(NetworkPacket* pkt);
 203         void handleCommand_ItemDef(NetworkPacket* pkt);
 204         void handleCommand_PlaySound(NetworkPacket* pkt);
 205         void handleCommand_StopSound(NetworkPacket* pkt);
 206         void handleCommand_FadeSound(NetworkPacket *pkt);
 207         void handleCommand_Privileges(NetworkPacket* pkt);
 208         void handleCommand_InventoryFormSpec(NetworkPacket* pkt);
 209         void handleCommand_DetachedInventory(NetworkPacket* pkt);
 210         void handleCommand_ShowFormSpec(NetworkPacket* pkt);
 211         void handleCommand_SpawnParticle(NetworkPacket* pkt);
 212         void handleCommand_AddParticleSpawner(NetworkPacket* pkt);
 213         void handleCommand_DeleteParticleSpawner(NetworkPacket* pkt);
 214         void handleCommand_HudAdd(NetworkPacket* pkt);
 215         void handleCommand_HudRemove(NetworkPacket* pkt);
 216         void handleCommand_HudChange(NetworkPacket* pkt);
 217         void handleCommand_HudSetFlags(NetworkPacket* pkt);
 218         void handleCommand_HudSetParam(NetworkPacket* pkt);
 219         void handleCommand_HudSetSky(NetworkPacket* pkt);
 220         void handleCommand_CloudParams(NetworkPacket* pkt);
 221         void handleCommand_OverrideDayNightRatio(NetworkPacket* pkt);
 222         void handleCommand_LocalPlayerAnimations(NetworkPacket* pkt);
 223         void handleCommand_EyeOffset(NetworkPacket* pkt);
 224         void handleCommand_UpdatePlayerList(NetworkPacket* pkt);
 225         void handleCommand_ModChannelMsg(NetworkPacket *pkt);
 226         void handleCommand_ModChannelSignal(NetworkPacket *pkt);
 227         void handleCommand_SrpBytesSandB(NetworkPacket* pkt);
 228         void handleCommand_CSMFlavourLimits(NetworkPacket *pkt);
 229
 230         void ProcessData(NetworkPacket *pkt);
 231
 232         void Send(NetworkPacket* pkt);
 233
 234         void interact(u8 action, const PointedThing& pointed);
 235
 236         void sendNodemetaFields(v3s16 p, const std::string &formname,
 237                 const StringMap &fields);
 238         void sendInventoryFields(const std::string &formname,
 239                 const StringMap &fields);
 240         void sendInventoryAction(InventoryAction *a);
 241         void sendChatMessage(const std::wstring &message);
 242         void clearOutChatQueue();
 243         void sendChangePassword(const std::string &oldpassword,
 244                 const std::string &newpassword);
 245         void sendDamage(u8 damage);
 246         void sendRespawn();
 247         void sendReady();
 248
 249         ClientEnvironment& getEnv() { return m_env; }
 250         ITextureSource *tsrc() { return getTextureSource(); }
 251         ISoundManager *sound() { return getSoundManager(); }
 252         static const std::string &getBuiltinLuaPath();
 253         static const std::string &getClientModsLuaPath();
 254
 255         virtual const std::vector<ModSpec> &getMods() const;
 256         virtual const ModSpec* getModSpec(const std::string &modname) const;
 257
 258         // Causes urgent mesh updates (unlike Map::add/removeNodeWithEvent)
 259         void removeNode(v3s16 p);
 260
 261         /**
 262          * Helper function for Client Side Modding
 263          * Flavour is applied there, this should not be used for core engine
 264          * @param p
 265          * @param is_valid_position
 266          * @return
 267          */
 268         MapNode getNode(v3s16 p, bool *is_valid_position);
 269         void addNode(v3s16 p, MapNode n, bool remove_metadata = true);
 270
 271         void setPlayerControl(PlayerControl &control);
 272
 273         void selectPlayerItem(u16 item);
 274         u16 getPlayerItem() const
 275         { return m_playeritem; }
 276
 277         // Returns true if the inventory of the local player has been
 278         // updated from the server. If it is true, it is set to false.
 279         bool getLocalInventoryUpdated();
 280         // Copies the inventory of the local player to parameter
 281         void getLocalInventory(Inventory &dst);
 282
 283         /* InventoryManager interface */
 284         Inventory* getInventory(const InventoryLocation &loc);
 285         void inventoryAction(InventoryAction *a);
 286
 287         const std::list<std::string> &getConnectedPlayerNames()
 288         {
 289                 return m_env.getPlayerNames();
 290         }
 291
 292         float getAnimationTime();
 293
 294         int getCrackLevel();
 295         v3s16 getCrackPos();
 296         void setCrack(int level, v3s16 pos);
 297
 298         u16 getHP();
 299
 300         bool checkPrivilege(const std::string &priv) const
 301         { return (m_privileges.count(priv) != 0); }
 302
 303         const std::unordered_set<std::string> &getPrivilegeList() const
 304         { return m_privileges; }
 305
 306         bool getChatMessage(std::wstring &message);
 307         void typeChatMessage(const std::wstring& message);
 308
 309         u64 getMapSeed(){ return m_map_seed; }
 310
 311         void addUpdateMeshTask(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 312         // Including blocks at appropriate edges
 313         void addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 314         void addUpdateMeshTaskForNode(v3s16 nodepos, bool ack_to_server=false, bool urgent=false);
 315
 316         void updateCameraOffset(v3s16 camera_offset)
 317         { m_mesh_update_thread.m_camera_offset = camera_offset; }
 318
 319         bool hasClientEvents() const { return !m_client_event_queue.empty(); }
 320         // Get event from queue. If queue is empty, it triggers an assertion failure.
 321         ClientEvent * getClientEvent();
 322
 323         bool accessDenied() const { return m_access_denied; }
 324
 325         bool reconnectRequested() const { return m_access_denied_reconnect; }
 326
 327         void setFatalError(const std::string &reason)
 328         {
 329                 m_access_denied = true;
 330                 m_access_denied_reason = reason;
 331         }
 332
 333         // Renaming accessDeniedReason to better name could be good as it's used to
 334         // disconnect client when CSM failed.
 335         const std::string &accessDeniedReason() const { return m_access_denied_reason; }
 336
 337         bool itemdefReceived()
 338         { return m_itemdef_received; }
 339         bool nodedefReceived()
 340         { return m_nodedef_received; }
 341         bool mediaReceived()
 342         { return !m_media_downloader; }
 343
 344         u8 getProtoVersion()
 345         { return m_proto_ver; }
 346
 347         bool connectedToServer();
 348
 349         float mediaReceiveProgress();
 350
 351         void afterContentReceived();
 352
 353         float getRTT();
 354         float getCurRate();
 355
 356         Minimap* getMinimap() { return m_minimap; }
 357         void setCamera(Camera* camera) { m_camera = camera; }
 358
 359         Camera* getCamera () { return m_camera; }
 360
 361         bool shouldShowMinimap() const;
 362
 363         // IGameDef interface
 364         virtual IItemDefManager* getItemDefManager();
 365         virtual INodeDefManager* getNodeDefManager();
 366         virtual ICraftDefManager* getCraftDefManager();
 367         ITextureSource* getTextureSource();
 368         virtual IShaderSource* getShaderSource();
 369         IShaderSource *shsrc() { return getShaderSource(); }
 370         virtual u16 allocateUnknownNodeId(const std::string &name);
 371         virtual ISoundManager* getSoundManager();
 372         virtual MtEventManager* getEventManager();
 373         virtual ParticleManager* getParticleManager();
 374         bool checkLocalPrivilege(const std::string &priv)
 375         { return checkPrivilege(priv); }
 376         virtual scene::IAnimatedMesh* getMesh(const std::string &filename, bool cache = false);
 377         const std::string* getModFile(const std::string &filename);
 378
 379         virtual std::string getModStoragePath() const;
 380         virtual bool registerModStorage(ModMetadata *meta);
 381         virtual void unregisterModStorage(const std::string &name);
 382
 383         // The following set of functions is used by ClientMediaDownloader
 384         // Insert a media file appropriately into the appropriate manager
 385         bool loadMedia(const std::string &data, const std::string &filename);
 386         // Send a request for conventional media transfer
 387         void request_media(const std::vector<std::string> &file_requests);
 388
 389         LocalClientState getState() { return m_state; }
 390
 391         void makeScreenshot();
 392
 393         inline void pushToChatQueue(ChatMessage *cec)
 394         {
 395                 m_chat_queue.push(cec);
 396         }
 397
 398         ClientScripting *getScript() { return m_script; }
 399         const bool moddingEnabled() const { return m_modding_enabled; }
 400
 401         void pushToEventQueue(ClientEvent *event);
 402
 403         void showMinimap(bool show = true);
 404
 405         const Address getServerAddress();
 406
 407         const std::string &getAddressName() const
 408         {
 409                 return m_address_name;
 410         }
 411
 412         inline bool checkCSMFlavourLimit(CSMFlavourLimit flag) const
 413         {
 414                 return m_csm_flavour_limits & flag;
 415         }
 416
 417         u32 getCSMNodeRangeLimit() const
 418         {
 419                 return m_csm_noderange_limit;
 420         }
 421
 422         bool joinModChannel(const std::string &channel);
 423         bool leaveModChannel(const std::string &channel);
 424         bool sendModChannelMessage(const std::string &channel, const std::string &message);
 425         ModChannel *getModChannel(const std::string &channel);
 426
 427 private:
 428         void loadMods();
 429         bool checkBuiltinIntegrity();
 430
 431         // Virtual methods from con::PeerHandler
 432         void peerAdded(con::Peer *peer);
 433         void deletingPeer(con::Peer *peer, bool timeout);
 434
 435         void initLocalMapSaving(const Address &address,
 436                         const std::string &hostname,
 437                         bool is_local_server);
 438
 439         void ReceiveAll();
 440         void Receive();
 441
 442         void sendPlayerPos();
 443         // Send the item number 'item' as player item to the server
 444         void sendPlayerItem(u16 item);
 445
 446         void deleteAuthData();
 447         // helper method shared with clientpackethandler
 448         static AuthMechanism choseAuthMech(const u32 mechs);
 449
 450         void sendInit(const std::string &playerName);
 451         void startAuth(AuthMechanism chosen_auth_mechanism);
 452         void sendDeletedBlocks(std::vector<v3s16> &blocks);
 453         void sendGotBlocks(v3s16 block);
 454         void sendRemovedSounds(std::vector<s32> &soundList);
 455
 456         // Helper function
 457         inline std::string getPlayerName()
 458         { return m_env.getLocalPlayer()->getName(); }
 459
 460         bool canSendChatMessage() const;
 461
 462         float m_packetcounter_timer = 0.0f;
 463         float m_connection_reinit_timer = 0.1f;
 464         float m_avg_rtt_timer = 0.0f;
 465         float m_playerpos_send_timer = 0.0f;
 466         IntervalLimiter m_map_timer_and_unload_interval;
 467
 468         IWritableTextureSource *m_tsrc;
 469         IWritableShaderSource *m_shsrc;
 470         IWritableItemDefManager *m_itemdef;
 471         IWritableNodeDefManager *m_nodedef;
 472         ISoundManager *m_sound;
 473         MtEventManager *m_event;
 474
 475
 476         MeshUpdateThread m_mesh_update_thread;
 477         ClientEnvironment m_env;
 478         ParticleManager m_particle_manager;
 479         std::unique_ptr<con::Connection> m_con;
 480         std::string m_address_name;
 481         Camera *m_camera = nullptr;
 482         Minimap *m_minimap = nullptr;
 483         bool m_minimap_disabled_by_server = false;
 484         // Server serialization version
 485         u8 m_server_ser_ver;
 486
 487         // Used version of the protocol with server
 488         // Values smaller than 25 only mean they are smaller than 25,
 489         // and aren't accurate. We simply just don't know, because
 490         // the server didn't send the version back then.
 491         // If 0, server init hasn't been received yet.
 492         u8 m_proto_ver = 0;
 493
 494         u16 m_playeritem = 0;
 495         bool m_inventory_updated = false;
 496         Inventory *m_inventory_from_server = nullptr;
 497         float m_inventory_from_server_age = 0.0f;
 498         PacketCounter m_packetcounter;
 499         // Block mesh animation parameters
 500         float m_animation_time = 0.0f;
 501         int m_crack_level = -1;
 502         v3s16 m_crack_pos;
 503         // 0 <= m_daynight_i < DAYNIGHT_CACHE_COUNT
 504         //s32 m_daynight_i;
 505         //u32 m_daynight_ratio;
 506         std::queue<std::wstring> m_out_chat_queue;
 507         u32 m_last_chat_message_sent;
 508         float m_chat_message_allowance = 5.0f;
 509         std::queue<ChatMessage *> m_chat_queue;
 510
 511         // The authentication methods we can use to enter sudo mode (=change password)
 512         u32 m_sudo_auth_methods;
 513
 514         // The seed returned by the server in TOCLIENT_INIT is stored here
 515         u64 m_map_seed = 0;
 516
 517         // Auth data
 518         std::string m_playername;
 519         std::string m_password;
 520         // If set, this will be sent (and cleared) upon a TOCLIENT_ACCEPT_SUDO_MODE
 521         std::string m_new_password;
 522         // Usable by auth mechanisms.
 523         AuthMechanism m_chosen_auth_mech;
 524         void *m_auth_data = nullptr;
 525
 526
 527         bool m_access_denied = false;
 528         bool m_access_denied_reconnect = false;
 529         std::string m_access_denied_reason = "";
 530         std::queue<ClientEvent *> m_client_event_queue;
 531         bool m_itemdef_received = false;
 532         bool m_nodedef_received = false;
 533         bool m_mods_loaded = false;
 534         ClientMediaDownloader *m_media_downloader;
 535
 536         // time_of_day speed approximation for old protocol
 537         bool m_time_of_day_set = false;
 538         float m_last_time_of_day_f = -1.0f;
 539         float m_time_of_day_update_timer = 0.0f;
 540
 541         // An interval for generally sending object positions and stuff
 542         float m_recommended_send_interval = 0.1f;
 543
 544         // Sounds
 545         float m_removed_sounds_check_timer = 0.0f;
 546         // Mapping from server sound ids to our sound ids
 547         std::unordered_map<s32, int> m_sounds_server_to_client;
 548         // And the other way!
 549         std::unordered_map<int, s32> m_sounds_client_to_server;
 550         // And relations to objects
 551         std::unordered_map<int, u16> m_sounds_to_objects;
 552
 553         // Privileges
 554         std::unordered_set<std::string> m_privileges;
 555
 556         // Detached inventories
 557         // key = name
 558         std::unordered_map<std::string, Inventory*> m_detached_inventories;
 559
 560         // Storage for mesh data for creating multiple instances of the same mesh
 561         StringMap m_mesh_data;
 562
 563         StringMap m_mod_files;
 564
 565         // own state
 566         LocalClientState m_state;
 567
 568         GameUI *m_game_ui;
 569
 570         // Used for saving server map to disk client-side
 571         MapDatabase *m_localdb = nullptr;
 572         IntervalLimiter m_localdb_save_interval;
 573         u16 m_cache_save_interval;
 574
 575         ClientScripting *m_script = nullptr;
 576         bool m_modding_enabled;
 577         std::unordered_map<std::string, ModMetadata *> m_mod_storages;
 578         float m_mod_storage_save_timer = 10.0f;
 579         std::vector<ModSpec> m_mods;
 580
 581         bool m_shutdown = false;
 582
 583         // CSM flavour limits byteflag
 584         u64 m_csm_flavour_limits = CSMFlavourLimit::CSM_FL_NONE;
 585         u32 m_csm_noderange_limit = 8;
 586
 587         std::unique_ptr<ModChannelMgr> m_modchannel_mgr;
 588 };