src/client/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 "client/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 ISoundManager;
  52 class NodeDefManager;
  53 //class IWritableCraftDefManager;
  54 class ClientMediaDownloader;
  55 struct MapDrawControl;
  56 class ModChannelMgr;
  57 class MtEventManager;
  58 struct PointedThing;
  59 class MapDatabase;
  60 class Minimap;
  61 struct MinimapMapblock;
  62 class Camera;
  63 class NetworkPacket;
  64 namespace con {
  65 class Connection;
  66 }
  67
  68 enum LocalClientState {
  69         LC_Created,
  70         LC_Init,
  71         LC_Ready
  72 };
  73
  74 /*
  75         Packet counter
  76 */
  77
  78 class PacketCounter
  79 {
  80 public:
  81         PacketCounter() = default;
  82
  83         void add(u16 command)
  84         {
  85                 auto n = m_packets.find(command);
  86                 if (n == m_packets.end())
  87                         m_packets[command] = 1;
  88                 else
  89                         n->second++;
  90         }
  91
  92         void clear()
  93         {
  94                 m_packets.clear();
  95         }
  96
  97         u32 sum() const;
  98         void print(std::ostream &o) const;
  99
 100 private:
 101         // command, count
 102         std::map<u16, u32> m_packets;
 103 };
 104
 105 class ClientScripting;
 106 class GameUI;
 107
 108 class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 109 {
 110 public:
 111         /*
 112                 NOTE: Nothing is thread-safe here.
 113         */
 114
 115         Client(
 116                         const char *playername,
 117                         const std::string &password,
 118                         const std::string &address_name,
 119                         MapDrawControl &control,
 120                         IWritableTextureSource *tsrc,
 121                         IWritableShaderSource *shsrc,
 122                         IWritableItemDefManager *itemdef,
 123                         NodeDefManager *nodedef,
 124                         ISoundManager *sound,
 125                         MtEventManager *event,
 126                         bool ipv6,
 127                         GameUI *game_ui
 128         );
 129
 130         ~Client();
 131         DISABLE_CLASS_COPY(Client);
 132
 133         // Load local mods into memory
 134         void scanModSubfolder(const std::string &mod_name, const std::string &mod_path,
 135                                 std::string mod_subpath);
 136         inline void scanModIntoMemory(const std::string &mod_name, const std::string &mod_path)
 137         {
 138                 scanModSubfolder(mod_name, mod_path, "");
 139         }
 140
 141         /*
 142          request all threads managed by client to be stopped
 143          */
 144         void Stop();
 145
 146
 147         bool isShutdown();
 148
 149         /*
 150                 The name of the local player should already be set when
 151                 calling this, as it is sent in the initialization.
 152         */
 153         void connect(Address address, bool is_local_server);
 154
 155         /*
 156                 Stuff that references the environment is valid only as
 157                 long as this is not called. (eg. Players)
 158                 If this throws a PeerNotFoundException, the connection has
 159                 timed out.
 160         */
 161         void step(float dtime);
 162
 163         /*
 164          * Command Handlers
 165          */
 166
 167         void handleCommand(NetworkPacket* pkt);
 168
 169         void handleCommand_Null(NetworkPacket* pkt) {};
 170         void handleCommand_Deprecated(NetworkPacket* pkt);
 171         void handleCommand_Hello(NetworkPacket* pkt);
 172         void handleCommand_AuthAccept(NetworkPacket* pkt);
 173         void handleCommand_AcceptSudoMode(NetworkPacket* pkt);
 174         void handleCommand_DenySudoMode(NetworkPacket* pkt);
 175         void handleCommand_AccessDenied(NetworkPacket* pkt);
 176         void handleCommand_RemoveNode(NetworkPacket* pkt);
 177         void handleCommand_AddNode(NetworkPacket* pkt);
 178         void handleCommand_NodemetaChanged(NetworkPacket *pkt);
 179         void handleCommand_BlockData(NetworkPacket* pkt);
 180         void handleCommand_Inventory(NetworkPacket* pkt);
 181         void handleCommand_TimeOfDay(NetworkPacket* pkt);
 182         void handleCommand_ChatMessage(NetworkPacket *pkt);
 183         void handleCommand_ActiveObjectRemoveAdd(NetworkPacket* pkt);
 184         void handleCommand_ActiveObjectMessages(NetworkPacket* pkt);
 185         void handleCommand_Movement(NetworkPacket* pkt);
 186         void handleCommand_Fov(NetworkPacket *pkt);
 187         void handleCommand_HP(NetworkPacket* pkt);
 188         void handleCommand_Breath(NetworkPacket* pkt);
 189         void handleCommand_MovePlayer(NetworkPacket* pkt);
 190         void handleCommand_DeathScreen(NetworkPacket* pkt);
 191         void handleCommand_AnnounceMedia(NetworkPacket* pkt);
 192         void handleCommand_Media(NetworkPacket* pkt);
 193         void handleCommand_NodeDef(NetworkPacket* pkt);
 194         void handleCommand_ItemDef(NetworkPacket* pkt);
 195         void handleCommand_PlaySound(NetworkPacket* pkt);
 196         void handleCommand_StopSound(NetworkPacket* pkt);
 197         void handleCommand_FadeSound(NetworkPacket *pkt);
 198         void handleCommand_Privileges(NetworkPacket* pkt);
 199         void handleCommand_InventoryFormSpec(NetworkPacket* pkt);
 200         void handleCommand_DetachedInventory(NetworkPacket* pkt);
 201         void handleCommand_ShowFormSpec(NetworkPacket* pkt);
 202         void handleCommand_SpawnParticle(NetworkPacket* pkt);
 203         void handleCommand_AddParticleSpawner(NetworkPacket* pkt);
 204         void handleCommand_DeleteParticleSpawner(NetworkPacket* pkt);
 205         void handleCommand_HudAdd(NetworkPacket* pkt);
 206         void handleCommand_HudRemove(NetworkPacket* pkt);
 207         void handleCommand_HudChange(NetworkPacket* pkt);
 208         void handleCommand_HudSetFlags(NetworkPacket* pkt);
 209         void handleCommand_HudSetParam(NetworkPacket* pkt);
 210         void handleCommand_HudSetSky(NetworkPacket* pkt);
 211         void handleCommand_HudSetSun(NetworkPacket* pkt);
 212         void handleCommand_HudSetMoon(NetworkPacket* pkt);
 213         void handleCommand_HudSetStars(NetworkPacket* pkt);
 214         void handleCommand_CloudParams(NetworkPacket* pkt);
 215         void handleCommand_OverrideDayNightRatio(NetworkPacket* pkt);
 216         void handleCommand_LocalPlayerAnimations(NetworkPacket* pkt);
 217         void handleCommand_EyeOffset(NetworkPacket* pkt);
 218         void handleCommand_UpdatePlayerList(NetworkPacket* pkt);
 219         void handleCommand_ModChannelMsg(NetworkPacket *pkt);
 220         void handleCommand_ModChannelSignal(NetworkPacket *pkt);
 221         void handleCommand_SrpBytesSandB(NetworkPacket *pkt);
 222         void handleCommand_FormspecPrepend(NetworkPacket *pkt);
 223         void handleCommand_CSMRestrictionFlags(NetworkPacket *pkt);
 224         void handleCommand_PlayerSpeed(NetworkPacket *pkt);
 225         void handleCommand_MediaPush(NetworkPacket *pkt);
 226
 227         void ProcessData(NetworkPacket *pkt);
 228
 229         void Send(NetworkPacket* pkt);
 230
 231         void interact(InteractAction action, const PointedThing &pointed);
 232
 233         void sendNodemetaFields(v3s16 p, const std::string &formname,
 234                 const StringMap &fields);
 235         void sendInventoryFields(const std::string &formname,
 236                 const StringMap &fields);
 237         void sendInventoryAction(InventoryAction *a);
 238         void sendChatMessage(const std::wstring &message);
 239         void clearOutChatQueue();
 240         void sendChangePassword(const std::string &oldpassword,
 241                 const std::string &newpassword);
 242         void sendDamage(u16 damage);
 243         void sendRespawn();
 244         void sendReady();
 245
 246         ClientEnvironment& getEnv() { return m_env; }
 247         ITextureSource *tsrc() { return getTextureSource(); }
 248         ISoundManager *sound() { return getSoundManager(); }
 249         static const std::string &getBuiltinLuaPath();
 250         static const std::string &getClientModsLuaPath();
 251
 252         const std::vector<ModSpec> &getMods() const override;
 253         const ModSpec* getModSpec(const std::string &modname) const override;
 254
 255         // Causes urgent mesh updates (unlike Map::add/removeNodeWithEvent)
 256         void removeNode(v3s16 p);
 257
 258         // helpers to enforce CSM restrictions
 259         MapNode CSMGetNode(v3s16 p, bool *is_valid_position);
 260         int CSMClampRadius(v3s16 pos, int radius);
 261         v3s16 CSMClampPos(v3s16 pos);
 262
 263         void addNode(v3s16 p, MapNode n, bool remove_metadata = true);
 264
 265         void setPlayerControl(PlayerControl &control);
 266
 267         // Returns true if the inventory of the local player has been
 268         // updated from the server. If it is true, it is set to false.
 269         bool updateWieldedItem();
 270
 271         /* InventoryManager interface */
 272         Inventory* getInventory(const InventoryLocation &loc) override;
 273         void inventoryAction(InventoryAction *a) override;
 274
 275         // Send the item number 'item' as player item to the server
 276         void setPlayerItem(u16 item);
 277
 278         const std::list<std::string> &getConnectedPlayerNames()
 279         {
 280                 return m_env.getPlayerNames();
 281         }
 282
 283         float getAnimationTime();
 284
 285         int getCrackLevel();
 286         v3s16 getCrackPos();
 287         void setCrack(int level, v3s16 pos);
 288
 289         u16 getHP();
 290
 291         bool checkPrivilege(const std::string &priv) const
 292         { return (m_privileges.count(priv) != 0); }
 293
 294         const std::unordered_set<std::string> &getPrivilegeList() const
 295         { return m_privileges; }
 296
 297         bool getChatMessage(std::wstring &message);
 298         void typeChatMessage(const std::wstring& message);
 299
 300         u64 getMapSeed(){ return m_map_seed; }
 301
 302         void addUpdateMeshTask(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 303         // Including blocks at appropriate edges
 304         void addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 305         void addUpdateMeshTaskForNode(v3s16 nodepos, bool ack_to_server=false, bool urgent=false);
 306
 307         void updateCameraOffset(v3s16 camera_offset)
 308         { m_mesh_update_thread.m_camera_offset = camera_offset; }
 309
 310         bool hasClientEvents() const { return !m_client_event_queue.empty(); }
 311         // Get event from queue. If queue is empty, it triggers an assertion failure.
 312         ClientEvent * getClientEvent();
 313
 314         bool accessDenied() const { return m_access_denied; }
 315
 316         bool reconnectRequested() const { return m_access_denied_reconnect; }
 317
 318         void setFatalError(const std::string &reason)
 319         {
 320                 m_access_denied = true;
 321                 m_access_denied_reason = reason;
 322         }
 323
 324         // Renaming accessDeniedReason to better name could be good as it's used to
 325         // disconnect client when CSM failed.
 326         const std::string &accessDeniedReason() const { return m_access_denied_reason; }
 327
 328         const bool itemdefReceived() const
 329         { return m_itemdef_received; }
 330         const bool nodedefReceived() const
 331         { return m_nodedef_received; }
 332         const bool mediaReceived() const
 333         { return !m_media_downloader; }
 334         const bool activeObjectsReceived() const
 335         { return m_activeobjects_received; }
 336
 337         u16 getProtoVersion()
 338         { return m_proto_ver; }
 339
 340         bool connectedToServer();
 341         void confirmRegistration();
 342         bool m_is_registration_confirmation_state = false;
 343         bool m_simple_singleplayer_mode;
 344
 345         float mediaReceiveProgress();
 346
 347         void afterContentReceived();
 348
 349         float getRTT();
 350         float getCurRate();
 351
 352         Minimap* getMinimap() { return m_minimap; }
 353         void setCamera(Camera* camera) { m_camera = camera; }
 354
 355         Camera* getCamera () { return m_camera; }
 356
 357         bool shouldShowMinimap() const;
 358
 359         // IGameDef interface
 360         IItemDefManager* getItemDefManager() override;
 361         const NodeDefManager* getNodeDefManager() override;
 362         ICraftDefManager* getCraftDefManager() override;
 363         ITextureSource* getTextureSource();
 364         virtual IWritableShaderSource* getShaderSource();
 365         u16 allocateUnknownNodeId(const std::string &name) override;
 366         virtual ISoundManager* getSoundManager();
 367         MtEventManager* getEventManager();
 368         virtual ParticleManager* getParticleManager();
 369         bool checkLocalPrivilege(const std::string &priv)
 370         { return checkPrivilege(priv); }
 371         virtual scene::IAnimatedMesh* getMesh(const std::string &filename, bool cache = false);
 372         const std::string* getModFile(std::string filename);
 373
 374         std::string getModStoragePath() const override;
 375         bool registerModStorage(ModMetadata *meta) override;
 376         void unregisterModStorage(const std::string &name) override;
 377
 378         // The following set of functions is used by ClientMediaDownloader
 379         // Insert a media file appropriately into the appropriate manager
 380         bool loadMedia(const std::string &data, const std::string &filename,
 381                 bool from_media_push = false);
 382         // Send a request for conventional media transfer
 383         void request_media(const std::vector<std::string> &file_requests);
 384
 385         LocalClientState getState() { return m_state; }
 386
 387         void makeScreenshot();
 388
 389         inline void pushToChatQueue(ChatMessage *cec)
 390         {
 391                 m_chat_queue.push(cec);
 392         }
 393
 394         ClientScripting *getScript() { return m_script; }
 395         const bool modsLoaded() const { return m_mods_loaded; }
 396
 397         void pushToEventQueue(ClientEvent *event);
 398
 399         void showMinimap(bool show = true);
 400
 401         const Address getServerAddress();
 402
 403         const std::string &getAddressName() const
 404         {
 405                 return m_address_name;
 406         }
 407
 408         inline u64 getCSMRestrictionFlags() const
 409         {
 410                 return m_csm_restriction_flags;
 411         }
 412
 413         inline bool checkCSMRestrictionFlag(CSMRestrictionFlags flag) const
 414         {
 415                 return m_csm_restriction_flags & flag;
 416         }
 417
 418         u32 getCSMNodeRangeLimit() const
 419         {
 420                 return m_csm_restriction_noderange;
 421         }
 422
 423         inline std::unordered_map<u32, u32> &getHUDTranslationMap()
 424         {
 425                 return m_hud_server_to_client;
 426         }
 427
 428         bool joinModChannel(const std::string &channel) override;
 429         bool leaveModChannel(const std::string &channel) override;
 430         bool sendModChannelMessage(const std::string &channel,
 431                         const std::string &message) override;
 432         ModChannel *getModChannel(const std::string &channel) override;
 433
 434         const std::string &getFormspecPrepend() const
 435         {
 436                 return m_env.getLocalPlayer()->formspec_prepend;
 437         }
 438 private:
 439         void loadMods();
 440         bool checkBuiltinIntegrity();
 441
 442         // Virtual methods from con::PeerHandler
 443         void peerAdded(con::Peer *peer) override;
 444         void deletingPeer(con::Peer *peer, bool timeout) override;
 445
 446         void initLocalMapSaving(const Address &address,
 447                         const std::string &hostname,
 448                         bool is_local_server);
 449
 450         void ReceiveAll();
 451
 452         void sendPlayerPos();
 453
 454         void deleteAuthData();
 455         // helper method shared with clientpackethandler
 456         static AuthMechanism choseAuthMech(const u32 mechs);
 457
 458         void sendInit(const std::string &playerName);
 459         void promptConfirmRegistration(AuthMechanism chosen_auth_mechanism);
 460         void startAuth(AuthMechanism chosen_auth_mechanism);
 461         void sendDeletedBlocks(std::vector<v3s16> &blocks);
 462         void sendGotBlocks(const std::vector<v3s16> &blocks);
 463         void sendRemovedSounds(std::vector<s32> &soundList);
 464
 465         // Helper function
 466         inline std::string getPlayerName()
 467         { return m_env.getLocalPlayer()->getName(); }
 468
 469         bool canSendChatMessage() const;
 470
 471         float m_packetcounter_timer = 0.0f;
 472         float m_connection_reinit_timer = 0.1f;
 473         float m_avg_rtt_timer = 0.0f;
 474         float m_playerpos_send_timer = 0.0f;
 475         IntervalLimiter m_map_timer_and_unload_interval;
 476
 477         IWritableTextureSource *m_tsrc;
 478         IWritableShaderSource *m_shsrc;
 479         IWritableItemDefManager *m_itemdef;
 480         NodeDefManager *m_nodedef;
 481         ISoundManager *m_sound;
 482         MtEventManager *m_event;
 483
 484
 485         MeshUpdateThread m_mesh_update_thread;
 486         ClientEnvironment m_env;
 487         ParticleManager m_particle_manager;
 488         std::unique_ptr<con::Connection> m_con;
 489         std::string m_address_name;
 490         Camera *m_camera = nullptr;
 491         Minimap *m_minimap = nullptr;
 492         bool m_minimap_disabled_by_server = false;
 493
 494         // Server serialization version
 495         u8 m_server_ser_ver;
 496
 497         // Used version of the protocol with server
 498         // Values smaller than 25 only mean they are smaller than 25,
 499         // and aren't accurate. We simply just don't know, because
 500         // the server didn't send the version back then.
 501         // If 0, server init hasn't been received yet.
 502         u16 m_proto_ver = 0;
 503
 504         bool m_update_wielded_item = false;
 505         Inventory *m_inventory_from_server = nullptr;
 506         float m_inventory_from_server_age = 0.0f;
 507         PacketCounter m_packetcounter;
 508         // Block mesh animation parameters
 509         float m_animation_time = 0.0f;
 510         int m_crack_level = -1;
 511         v3s16 m_crack_pos;
 512         // 0 <= m_daynight_i < DAYNIGHT_CACHE_COUNT
 513         //s32 m_daynight_i;
 514         //u32 m_daynight_ratio;
 515         std::queue<std::wstring> m_out_chat_queue;
 516         u32 m_last_chat_message_sent;
 517         float m_chat_message_allowance = 5.0f;
 518         std::queue<ChatMessage *> m_chat_queue;
 519
 520         // The authentication methods we can use to enter sudo mode (=change password)
 521         u32 m_sudo_auth_methods;
 522
 523         // The seed returned by the server in TOCLIENT_INIT is stored here
 524         u64 m_map_seed = 0;
 525
 526         // Auth data
 527         std::string m_playername;
 528         std::string m_password;
 529         // If set, this will be sent (and cleared) upon a TOCLIENT_ACCEPT_SUDO_MODE
 530         std::string m_new_password;
 531         // Usable by auth mechanisms.
 532         AuthMechanism m_chosen_auth_mech;
 533         void *m_auth_data = nullptr;
 534
 535         bool m_access_denied = false;
 536         bool m_access_denied_reconnect = false;
 537         std::string m_access_denied_reason = "";
 538         std::queue<ClientEvent *> m_client_event_queue;
 539         bool m_itemdef_received = false;
 540         bool m_nodedef_received = false;
 541         bool m_activeobjects_received = false;
 542         bool m_mods_loaded = false;
 543
 544         ClientMediaDownloader *m_media_downloader;
 545         // Set of media filenames pushed by server at runtime
 546         std::unordered_set<std::string> m_media_pushed_files;
 547
 548         // time_of_day speed approximation for old protocol
 549         bool m_time_of_day_set = false;
 550         float m_last_time_of_day_f = -1.0f;
 551         float m_time_of_day_update_timer = 0.0f;
 552
 553         // An interval for generally sending object positions and stuff
 554         float m_recommended_send_interval = 0.1f;
 555
 556         // Sounds
 557         float m_removed_sounds_check_timer = 0.0f;
 558         // Mapping from server sound ids to our sound ids
 559         std::unordered_map<s32, int> m_sounds_server_to_client;
 560         // And the other way!
 561         std::unordered_map<int, s32> m_sounds_client_to_server;
 562         // Relation of client id to object id
 563         std::unordered_map<int, u16> m_sounds_to_objects;
 564
 565         // Map server hud ids to client hud ids
 566         std::unordered_map<u32, u32> m_hud_server_to_client;
 567
 568         // Privileges
 569         std::unordered_set<std::string> m_privileges;
 570
 571         // Detached inventories
 572         // key = name
 573         std::unordered_map<std::string, Inventory*> m_detached_inventories;
 574
 575         // Storage for mesh data for creating multiple instances of the same mesh
 576         StringMap m_mesh_data;
 577
 578         // own state
 579         LocalClientState m_state;
 580
 581         GameUI *m_game_ui;
 582
 583         // Used for saving server map to disk client-side
 584         MapDatabase *m_localdb = nullptr;
 585         IntervalLimiter m_localdb_save_interval;
 586         u16 m_cache_save_interval;
 587
 588         // Client modding
 589         ClientScripting *m_script = nullptr;
 590         bool m_modding_enabled;
 591         std::unordered_map<std::string, ModMetadata *> m_mod_storages;
 592         float m_mod_storage_save_timer = 10.0f;
 593         std::vector<ModSpec> m_mods;
 594         StringMap m_mod_vfs;
 595
 596         bool m_shutdown = false;
 597
 598         // CSM restrictions byteflag
 599         u64 m_csm_restriction_flags = CSMRestrictionFlags::CSM_RF_NONE;
 600         u32 m_csm_restriction_noderange = 8;
 601
 602         std::unique_ptr<ModChannelMgr> m_modchannel_mgr;
 603 };