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                 std::map<u16, u16>::iterator n = m_packets.find(command);
  86                 if(n == m_packets.end())
  87                 {
  88                         m_packets[command] = 1;
  89                 }
  90                 else
  91                 {
  92                         n->second++;
  93                 }
  94         }
  95
  96         void clear()
  97         {
  98                 for (auto &m_packet : m_packets) {
  99                         m_packet.second = 0;
 100                 }
 101         }
 102
 103         void print(std::ostream &o)
 104         {
 105                 for (const auto &m_packet : m_packets) {
 106                         o << "cmd "<< m_packet.first <<" count "<< m_packet.second << std::endl;
 107                 }
 108         }
 109
 110 private:
 111         // command, count
 112         std::map<u16, u16> m_packets;
 113 };
 114
 115 class ClientScripting;
 116 class GameUI;
 117
 118 class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 119 {
 120 public:
 121         /*
 122                 NOTE: Nothing is thread-safe here.
 123         */
 124
 125         Client(
 126                         const char *playername,
 127                         const std::string &password,
 128                         const std::string &address_name,
 129                         MapDrawControl &control,
 130                         IWritableTextureSource *tsrc,
 131                         IWritableShaderSource *shsrc,
 132                         IWritableItemDefManager *itemdef,
 133                         NodeDefManager *nodedef,
 134                         ISoundManager *sound,
 135                         MtEventManager *event,
 136                         bool ipv6,
 137                         GameUI *game_ui
 138         );
 139
 140         ~Client();
 141         DISABLE_CLASS_COPY(Client);
 142
 143         // Load local mods into memory
 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_NodemetaChanged(NetworkPacket *pkt);
 189         void handleCommand_BlockData(NetworkPacket* pkt);
 190         void handleCommand_Inventory(NetworkPacket* pkt);
 191         void handleCommand_TimeOfDay(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_Fov(NetworkPacket *pkt);
 197         void handleCommand_HP(NetworkPacket* pkt);
 198         void handleCommand_Breath(NetworkPacket* pkt);
 199         void handleCommand_MovePlayer(NetworkPacket* pkt);
 200         void handleCommand_DeathScreen(NetworkPacket* pkt);
 201         void handleCommand_AnnounceMedia(NetworkPacket* pkt);
 202         void handleCommand_Media(NetworkPacket* pkt);
 203         void handleCommand_NodeDef(NetworkPacket* pkt);
 204         void handleCommand_ItemDef(NetworkPacket* pkt);
 205         void handleCommand_PlaySound(NetworkPacket* pkt);
 206         void handleCommand_StopSound(NetworkPacket* pkt);
 207         void handleCommand_FadeSound(NetworkPacket *pkt);
 208         void handleCommand_Privileges(NetworkPacket* pkt);
 209         void handleCommand_InventoryFormSpec(NetworkPacket* pkt);
 210         void handleCommand_DetachedInventory(NetworkPacket* pkt);
 211         void handleCommand_ShowFormSpec(NetworkPacket* pkt);
 212         void handleCommand_SpawnParticle(NetworkPacket* pkt);
 213         void handleCommand_AddParticleSpawner(NetworkPacket* pkt);
 214         void handleCommand_DeleteParticleSpawner(NetworkPacket* pkt);
 215         void handleCommand_HudAdd(NetworkPacket* pkt);
 216         void handleCommand_HudRemove(NetworkPacket* pkt);
 217         void handleCommand_HudChange(NetworkPacket* pkt);
 218         void handleCommand_HudSetFlags(NetworkPacket* pkt);
 219         void handleCommand_HudSetParam(NetworkPacket* pkt);
 220         void handleCommand_HudSetSky(NetworkPacket* pkt);
 221         void handleCommand_CloudParams(NetworkPacket* pkt);
 222         void handleCommand_OverrideDayNightRatio(NetworkPacket* pkt);
 223         void handleCommand_LocalPlayerAnimations(NetworkPacket* pkt);
 224         void handleCommand_EyeOffset(NetworkPacket* pkt);
 225         void handleCommand_UpdatePlayerList(NetworkPacket* pkt);
 226         void handleCommand_ModChannelMsg(NetworkPacket *pkt);
 227         void handleCommand_ModChannelSignal(NetworkPacket *pkt);
 228         void handleCommand_SrpBytesSandB(NetworkPacket *pkt);
 229         void handleCommand_FormspecPrepend(NetworkPacket *pkt);
 230         void handleCommand_CSMRestrictionFlags(NetworkPacket *pkt);
 231         void handleCommand_PlayerSpeed(NetworkPacket *pkt);
 232
 233         void ProcessData(NetworkPacket *pkt);
 234
 235         void Send(NetworkPacket* pkt);
 236
 237         void interact(InteractAction action, const PointedThing &pointed);
 238
 239         void sendNodemetaFields(v3s16 p, const std::string &formname,
 240                 const StringMap &fields);
 241         void sendInventoryFields(const std::string &formname,
 242                 const StringMap &fields);
 243         void sendInventoryAction(InventoryAction *a);
 244         void sendChatMessage(const std::wstring &message);
 245         void clearOutChatQueue();
 246         void sendChangePassword(const std::string &oldpassword,
 247                 const std::string &newpassword);
 248         void sendDamage(u16 damage);
 249         void sendRespawn();
 250         void sendReady();
 251
 252         ClientEnvironment& getEnv() { return m_env; }
 253         ITextureSource *tsrc() { return getTextureSource(); }
 254         ISoundManager *sound() { return getSoundManager(); }
 255         static const std::string &getBuiltinLuaPath();
 256         static const std::string &getClientModsLuaPath();
 257
 258         const std::vector<ModSpec> &getMods() const override;
 259         const ModSpec* getModSpec(const std::string &modname) const override;
 260
 261         // Causes urgent mesh updates (unlike Map::add/removeNodeWithEvent)
 262         void removeNode(v3s16 p);
 263
 264         // helpers to enforce CSM restrictions
 265         MapNode CSMGetNode(v3s16 p, bool *is_valid_position);
 266         int CSMClampRadius(v3s16 pos, int radius);
 267         v3s16 CSMClampPos(v3s16 pos);
 268
 269         void addNode(v3s16 p, MapNode n, bool remove_metadata = true);
 270
 271         void setPlayerControl(PlayerControl &control);
 272
 273         // Returns true if the inventory of the local player has been
 274         // updated from the server. If it is true, it is set to false.
 275         bool updateWieldedItem();
 276
 277         /* InventoryManager interface */
 278         Inventory* getInventory(const InventoryLocation &loc) override;
 279         void inventoryAction(InventoryAction *a) override;
 280
 281         // Send the item number 'item' as player item to the server
 282         void setPlayerItem(u16 item);
 283
 284         const std::list<std::string> &getConnectedPlayerNames()
 285         {
 286                 return m_env.getPlayerNames();
 287         }
 288
 289         float getAnimationTime();
 290
 291         int getCrackLevel();
 292         v3s16 getCrackPos();
 293         void setCrack(int level, v3s16 pos);
 294
 295         u16 getHP();
 296
 297         bool checkPrivilege(const std::string &priv) const
 298         { return (m_privileges.count(priv) != 0); }
 299
 300         const std::unordered_set<std::string> &getPrivilegeList() const
 301         { return m_privileges; }
 302
 303         bool getChatMessage(std::wstring &message);
 304         void typeChatMessage(const std::wstring& message);
 305
 306         u64 getMapSeed(){ return m_map_seed; }
 307
 308         void addUpdateMeshTask(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 309         // Including blocks at appropriate edges
 310         void addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server=false, bool urgent=false);
 311         void addUpdateMeshTaskForNode(v3s16 nodepos, bool ack_to_server=false, bool urgent=false);
 312
 313         void updateCameraOffset(v3s16 camera_offset)
 314         { m_mesh_update_thread.m_camera_offset = camera_offset; }
 315
 316         bool hasClientEvents() const { return !m_client_event_queue.empty(); }
 317         // Get event from queue. If queue is empty, it triggers an assertion failure.
 318         ClientEvent * getClientEvent();
 319
 320         bool accessDenied() const { return m_access_denied; }
 321
 322         bool reconnectRequested() const { return m_access_denied_reconnect; }
 323
 324         void setFatalError(const std::string &reason)
 325         {
 326                 m_access_denied = true;
 327                 m_access_denied_reason = reason;
 328         }
 329
 330         // Renaming accessDeniedReason to better name could be good as it's used to
 331         // disconnect client when CSM failed.
 332         const std::string &accessDeniedReason() const { return m_access_denied_reason; }
 333
 334         const bool itemdefReceived() const
 335         { return m_itemdef_received; }
 336         const bool nodedefReceived() const
 337         { return m_nodedef_received; }
 338         const bool mediaReceived() const
 339         { return !m_media_downloader; }
 340         const bool activeObjectsReceived() const
 341         { return m_activeobjects_received; }
 342
 343         u16 getProtoVersion()
 344         { return m_proto_ver; }
 345
 346         bool connectedToServer();
 347         void confirmRegistration();
 348         bool m_is_registration_confirmation_state = false;
 349         bool m_simple_singleplayer_mode;
 350
 351         float mediaReceiveProgress();
 352
 353         void afterContentReceived();
 354
 355         float getRTT();
 356         float getCurRate();
 357
 358         Minimap* getMinimap() { return m_minimap; }
 359         void setCamera(Camera* camera) { m_camera = camera; }
 360
 361         Camera* getCamera () { return m_camera; }
 362
 363         bool shouldShowMinimap() const;
 364
 365         // IGameDef interface
 366         IItemDefManager* getItemDefManager() override;
 367         const NodeDefManager* getNodeDefManager() override;
 368         ICraftDefManager* getCraftDefManager() override;
 369         ITextureSource* getTextureSource();
 370         virtual IShaderSource* getShaderSource();
 371         u16 allocateUnknownNodeId(const std::string &name) override;
 372         virtual ISoundManager* getSoundManager();
 373         MtEventManager* getEventManager();
 374         virtual ParticleManager* getParticleManager();
 375         bool checkLocalPrivilege(const std::string &priv)
 376         { return checkPrivilege(priv); }
 377         virtual scene::IAnimatedMesh* getMesh(const std::string &filename, bool cache = false);
 378         const std::string* getModFile(std::string filename);
 379
 380         std::string getModStoragePath() const override;
 381         bool registerModStorage(ModMetadata *meta) override;
 382         void unregisterModStorage(const std::string &name) override;
 383
 384         // The following set of functions is used by ClientMediaDownloader
 385         // Insert a media file appropriately into the appropriate manager
 386         bool loadMedia(const std::string &data, const std::string &filename);
 387         // Send a request for conventional media transfer
 388         void request_media(const std::vector<std::string> &file_requests);
 389
 390         LocalClientState getState() { return m_state; }
 391
 392         void makeScreenshot();
 393
 394         inline void pushToChatQueue(ChatMessage *cec)
 395         {
 396                 m_chat_queue.push(cec);
 397         }
 398
 399         ClientScripting *getScript() { return m_script; }
 400         const bool modsLoaded() const { return m_mods_loaded; }
 401
 402         void pushToEventQueue(ClientEvent *event);
 403
 404         void showMinimap(bool show = true);
 405
 406         const Address getServerAddress();
 407
 408         const std::string &getAddressName() const
 409         {
 410                 return m_address_name;
 411         }
 412
 413         inline u64 getCSMRestrictionFlags() const
 414         {
 415                 return m_csm_restriction_flags;
 416         }
 417
 418         inline bool checkCSMRestrictionFlag(CSMRestrictionFlags flag) const
 419         {
 420                 return m_csm_restriction_flags & flag;
 421         }
 422
 423         u32 getCSMNodeRangeLimit() const
 424         {
 425                 return m_csm_restriction_noderange;
 426         }
 427
 428         inline std::unordered_map<u32, u32> &getHUDTranslationMap()
 429         {
 430                 return m_hud_server_to_client;
 431         }
 432
 433         bool joinModChannel(const std::string &channel) override;
 434         bool leaveModChannel(const std::string &channel) override;
 435         bool sendModChannelMessage(const std::string &channel,
 436                         const std::string &message) override;
 437         ModChannel *getModChannel(const std::string &channel) override;
 438
 439         const std::string &getFormspecPrepend() const
 440         {
 441                 return m_env.getLocalPlayer()->formspec_prepend;
 442         }
 443 private:
 444         void loadMods();
 445         bool checkBuiltinIntegrity();
 446
 447         // Virtual methods from con::PeerHandler
 448         void peerAdded(con::Peer *peer) override;
 449         void deletingPeer(con::Peer *peer, bool timeout) override;
 450
 451         void initLocalMapSaving(const Address &address,
 452                         const std::string &hostname,
 453                         bool is_local_server);
 454
 455         void ReceiveAll();
 456
 457         void sendPlayerPos();
 458
 459         void deleteAuthData();
 460         // helper method shared with clientpackethandler
 461         static AuthMechanism choseAuthMech(const u32 mechs);
 462
 463         void sendInit(const std::string &playerName);
 464         void promptConfirmRegistration(AuthMechanism chosen_auth_mechanism);
 465         void startAuth(AuthMechanism chosen_auth_mechanism);
 466         void sendDeletedBlocks(std::vector<v3s16> &blocks);
 467         void sendGotBlocks(const std::vector<v3s16> &blocks);
 468         void sendRemovedSounds(std::vector<s32> &soundList);
 469
 470         // Helper function
 471         inline std::string getPlayerName()
 472         { return m_env.getLocalPlayer()->getName(); }
 473
 474         bool canSendChatMessage() const;
 475
 476         float m_packetcounter_timer = 0.0f;
 477         float m_connection_reinit_timer = 0.1f;
 478         float m_avg_rtt_timer = 0.0f;
 479         float m_playerpos_send_timer = 0.0f;
 480         IntervalLimiter m_map_timer_and_unload_interval;
 481
 482         IWritableTextureSource *m_tsrc;
 483         IWritableShaderSource *m_shsrc;
 484         IWritableItemDefManager *m_itemdef;
 485         NodeDefManager *m_nodedef;
 486         ISoundManager *m_sound;
 487         MtEventManager *m_event;
 488
 489
 490         MeshUpdateThread m_mesh_update_thread;
 491         ClientEnvironment m_env;
 492         ParticleManager m_particle_manager;
 493         std::unique_ptr<con::Connection> m_con;
 494         std::string m_address_name;
 495         Camera *m_camera = nullptr;
 496         Minimap *m_minimap = nullptr;
 497         bool m_minimap_disabled_by_server = false;
 498         // Server serialization version
 499         u8 m_server_ser_ver;
 500
 501         // Used version of the protocol with server
 502         // Values smaller than 25 only mean they are smaller than 25,
 503         // and aren't accurate. We simply just don't know, because
 504         // the server didn't send the version back then.
 505         // If 0, server init hasn't been received yet.
 506         u16 m_proto_ver = 0;
 507
 508         bool m_update_wielded_item = false;
 509         Inventory *m_inventory_from_server = nullptr;
 510         float m_inventory_from_server_age = 0.0f;
 511         PacketCounter m_packetcounter;
 512         // Block mesh animation parameters
 513         float m_animation_time = 0.0f;
 514         int m_crack_level = -1;
 515         v3s16 m_crack_pos;
 516         // 0 <= m_daynight_i < DAYNIGHT_CACHE_COUNT
 517         //s32 m_daynight_i;
 518         //u32 m_daynight_ratio;
 519         std::queue<std::wstring> m_out_chat_queue;
 520         u32 m_last_chat_message_sent;
 521         float m_chat_message_allowance = 5.0f;
 522         std::queue<ChatMessage *> m_chat_queue;
 523
 524         // The authentication methods we can use to enter sudo mode (=change password)
 525         u32 m_sudo_auth_methods;
 526
 527         // The seed returned by the server in TOCLIENT_INIT is stored here
 528         u64 m_map_seed = 0;
 529
 530         // Auth data
 531         std::string m_playername;
 532         std::string m_password;
 533         // If set, this will be sent (and cleared) upon a TOCLIENT_ACCEPT_SUDO_MODE
 534         std::string m_new_password;
 535         // Usable by auth mechanisms.
 536         AuthMechanism m_chosen_auth_mech;
 537         void *m_auth_data = nullptr;
 538
 539
 540         bool m_access_denied = false;
 541         bool m_access_denied_reconnect = false;
 542         std::string m_access_denied_reason = "";
 543         std::queue<ClientEvent *> m_client_event_queue;
 544         bool m_itemdef_received = false;
 545         bool m_nodedef_received = false;
 546         bool m_activeobjects_received = false;
 547         bool m_mods_loaded = false;
 548         ClientMediaDownloader *m_media_downloader;
 549
 550         // time_of_day speed approximation for old protocol
 551         bool m_time_of_day_set = false;
 552         float m_last_time_of_day_f = -1.0f;
 553         float m_time_of_day_update_timer = 0.0f;
 554
 555         // An interval for generally sending object positions and stuff
 556         float m_recommended_send_interval = 0.1f;
 557
 558         // Sounds
 559         float m_removed_sounds_check_timer = 0.0f;
 560         // Mapping from server sound ids to our sound ids
 561         std::unordered_map<s32, int> m_sounds_server_to_client;
 562         // And the other way!
 563         std::unordered_map<int, s32> m_sounds_client_to_server;
 564         // Relation of client id to object id
 565         std::unordered_map<int, u16> m_sounds_to_objects;
 566
 567         // Map server hud ids to client hud ids
 568         std::unordered_map<u32, u32> m_hud_server_to_client;
 569
 570         // Privileges
 571         std::unordered_set<std::string> m_privileges;
 572
 573         // Detached inventories
 574         // key = name
 575         std::unordered_map<std::string, Inventory*> m_detached_inventories;
 576
 577         // Storage for mesh data for creating multiple instances of the same mesh
 578         StringMap m_mesh_data;
 579
 580         // own state
 581         LocalClientState m_state;
 582
 583         GameUI *m_game_ui;
 584
 585         // Used for saving server map to disk client-side
 586         MapDatabase *m_localdb = nullptr;
 587         IntervalLimiter m_localdb_save_interval;
 588         u16 m_cache_save_interval;
 589
 590         // Client modding
 591         ClientScripting *m_script = nullptr;
 592         bool m_modding_enabled;
 593         std::unordered_map<std::string, ModMetadata *> m_mod_storages;
 594         float m_mod_storage_save_timer = 10.0f;
 595         std::vector<ModSpec> m_mods;
 596         StringMap m_mod_vfs;
 597
 598         bool m_shutdown = false;
 599
 600         // CSM restrictions byteflag
 601         u64 m_csm_restriction_flags = CSMRestrictionFlags::CSM_RF_NONE;
 602         u32 m_csm_restriction_noderange = 8;
 603
 604         std::unique_ptr<ModChannelMgr> m_modchannel_mgr;
 605 };