src/server.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 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 #include "server.h"
  21 #include <iostream>
  22 #include <queue>
  23 #include <algorithm>
  24 #include "clientserver.h"
  25 #include "ban.h"
  26 #include "environment.h"
  27 #include "map.h"
  28 #include "jthread/jmutexautolock.h"
  29 #include "main.h"
  30 #include "constants.h"
  31 #include "voxel.h"
  32 #include "config.h"
  33 #include "version.h"
  34 #include "filesys.h"
  35 #include "mapblock.h"
  36 #include "serverobject.h"
  37 #include "genericobject.h"
  38 #include "settings.h"
  39 #include "profiler.h"
  40 #include "log.h"
  41 #include "scripting_game.h"
  42 #include "nodedef.h"
  43 #include "itemdef.h"
  44 #include "craftdef.h"
  45 #include "emerge.h"
  46 #include "mapgen.h"
  47 #include "biome.h"
  48 #include "content_mapnode.h"
  49 #include "content_nodemeta.h"
  50 #include "content_abm.h"
  51 #include "content_sao.h"
  52 #include "mods.h"
  53 #include "sha1.h"
  54 #include "base64.h"
  55 #include "tool.h"
  56 #include "sound.h" // dummySoundManager
  57 #include "event_manager.h"
  58 #include "hex.h"
  59 #include "serverlist.h"
  60 #include "util/string.h"
  61 #include "util/pointedthing.h"
  62 #include "util/mathconstants.h"
  63 #include "rollback.h"
  64 #include "util/serialize.h"
  65 #include "util/thread.h"
  66 #include "defaultsettings.h"
  67
  68 class ClientNotFoundException : public BaseException
  69 {
  70 public:
  71         ClientNotFoundException(const char *s):
  72                 BaseException(s)
  73         {}
  74 };
  75
  76 class ServerThread : public JThread
  77 {
  78         Server *m_server;
  79
  80 public:
  81
  82         ServerThread(Server *server):
  83                 JThread(),
  84                 m_server(server)
  85         {
  86         }
  87
  88         void * Thread();
  89 };
  90
  91 void * ServerThread::Thread()
  92 {
  93         log_register_thread("ServerThread");
  94
  95         DSTACK(__FUNCTION_NAME);
  96         BEGIN_DEBUG_EXCEPTION_HANDLER
  97
  98         m_server->AsyncRunStep(true);
  99
 100         ThreadStarted();
 101
 102         porting::setThreadName("ServerThread");
 103
 104         while(!StopRequested())
 105         {
 106                 try{
 107                         //TimeTaker timer("AsyncRunStep() + Receive()");
 108
 109                         m_server->AsyncRunStep();
 110
 111                         m_server->Receive();
 112
 113                 }
 114                 catch(con::NoIncomingDataException &e)
 115                 {
 116                 }
 117                 catch(con::PeerNotFoundException &e)
 118                 {
 119                         infostream<<"Server: PeerNotFoundException"<<std::endl;
 120                 }
 121                 catch(ClientNotFoundException &e)
 122                 {
 123                 }
 124                 catch(con::ConnectionBindFailed &e)
 125                 {
 126                         m_server->setAsyncFatalError(e.what());
 127                 }
 128                 catch(LuaError &e)
 129                 {
 130                         m_server->setAsyncFatalError(e.what());
 131                 }
 132         }
 133
 134         END_DEBUG_EXCEPTION_HANDLER(errorstream)
 135
 136         return NULL;
 137 }
 138
 139 v3f ServerSoundParams::getPos(ServerEnvironment *env, bool *pos_exists) const
 140 {
 141         if(pos_exists) *pos_exists = false;
 142         switch(type){
 143         case SSP_LOCAL:
 144                 return v3f(0,0,0);
 145         case SSP_POSITIONAL:
 146                 if(pos_exists) *pos_exists = true;
 147                 return pos;
 148         case SSP_OBJECT: {
 149                 if(object == 0)
 150                         return v3f(0,0,0);
 151                 ServerActiveObject *sao = env->getActiveObject(object);
 152                 if(!sao)
 153                         return v3f(0,0,0);
 154                 if(pos_exists) *pos_exists = true;
 155                 return sao->getBasePosition(); }
 156         }
 157         return v3f(0,0,0);
 158 }
 159
 160
 161
 162 /*
 163         Server
 164 */
 165
 166 Server::Server(
 167                 const std::string &path_world,
 168                 const SubgameSpec &gamespec,
 169                 bool simple_singleplayer_mode,
 170                 bool ipv6
 171         ):
 172         m_path_world(path_world),
 173         m_gamespec(gamespec),
 174         m_simple_singleplayer_mode(simple_singleplayer_mode),
 175         m_async_fatal_error(""),
 176         m_env(NULL),
 177         m_con(PROTOCOL_ID,
 178                         512,
 179                         CONNECTION_TIMEOUT,
 180                         ipv6,
 181                         this),
 182         m_banmanager(NULL),
 183         m_rollback(NULL),
 184         m_rollback_sink_enabled(true),
 185         m_enable_rollback_recording(false),
 186         m_emerge(NULL),
 187         m_script(NULL),
 188         m_itemdef(createItemDefManager()),
 189         m_nodedef(createNodeDefManager()),
 190         m_craftdef(createCraftDefManager()),
 191         m_event(new EventManager()),
 192         m_thread(NULL),
 193         m_time_of_day_send_timer(0),
 194         m_uptime(0),
 195         m_clients(&m_con),
 196         m_shutdown_requested(false),
 197         m_ignore_map_edit_events(false),
 198         m_ignore_map_edit_events_peer_id(0)
 199
 200 {
 201         m_liquid_transform_timer = 0.0;
 202         m_liquid_transform_every = 1.0;
 203         m_print_info_timer = 0.0;
 204         m_masterserver_timer = 0.0;
 205         m_objectdata_timer = 0.0;
 206         m_emergethread_trigger_timer = 0.0;
 207         m_savemap_timer = 0.0;
 208
 209         m_step_dtime = 0.0;
 210         m_lag = g_settings->getFloat("dedicated_server_step");
 211
 212         if(path_world == "")
 213                 throw ServerError("Supplied empty world path");
 214
 215         if(!gamespec.isValid())
 216                 throw ServerError("Supplied invalid gamespec");
 217
 218         infostream<<"Server created for gameid \""<<m_gamespec.id<<"\"";
 219         if(m_simple_singleplayer_mode)
 220                 infostream<<" in simple singleplayer mode"<<std::endl;
 221         else
 222                 infostream<<std::endl;
 223         infostream<<"- world:  "<<m_path_world<<std::endl;
 224         infostream<<"- game:   "<<m_gamespec.path<<std::endl;
 225
 226         // Initialize default settings and override defaults with those provided
 227         // by the game
 228         set_default_settings(g_settings);
 229         Settings gamedefaults;
 230         getGameMinetestConfig(gamespec.path, gamedefaults);
 231         override_default_settings(g_settings, &gamedefaults);
 232
 233         // Create server thread
 234         m_thread = new ServerThread(this);
 235
 236         // Create emerge manager
 237         m_emerge = new EmergeManager(this);
 238
 239         // Create world if it doesn't exist
 240         if(!initializeWorld(m_path_world, m_gamespec.id))
 241                 throw ServerError("Failed to initialize world");
 242
 243         // Create ban manager
 244         std::string ban_path = m_path_world+DIR_DELIM+"ipban.txt";
 245         m_banmanager = new BanManager(ban_path);
 246
 247         // Create rollback manager
 248         std::string rollback_path = m_path_world+DIR_DELIM+"rollback.txt";
 249         m_rollback = createRollbackManager(rollback_path, this);
 250
 251         ModConfiguration modconf(m_path_world);
 252         m_mods = modconf.getMods();
 253         std::vector<ModSpec> unsatisfied_mods = modconf.getUnsatisfiedMods();
 254         // complain about mods with unsatisfied dependencies
 255         if(!modconf.isConsistent())
 256         {
 257                 for(std::vector<ModSpec>::iterator it = unsatisfied_mods.begin();
 258                         it != unsatisfied_mods.end(); ++it)
 259                 {
 260                         ModSpec mod = *it;
 261                         errorstream << "mod \"" << mod.name << "\" has unsatisfied dependencies: ";
 262                         for(std::set<std::string>::iterator dep_it = mod.unsatisfied_depends.begin();
 263                                 dep_it != mod.unsatisfied_depends.end(); ++dep_it)
 264                                 errorstream << " \"" << *dep_it << "\"";
 265                         errorstream << std::endl;
 266                 }
 267         }
 268
 269         Settings worldmt_settings;
 270         std::string worldmt = m_path_world + DIR_DELIM + "world.mt";
 271         worldmt_settings.readConfigFile(worldmt.c_str());
 272         std::vector<std::string> names = worldmt_settings.getNames();
 273         std::set<std::string> load_mod_names;
 274         for(std::vector<std::string>::iterator it = names.begin();
 275                 it != names.end(); ++it)
 276         {
 277                 std::string name = *it;
 278                 if(name.compare(0,9,"load_mod_")==0 && worldmt_settings.getBool(name))
 279                         load_mod_names.insert(name.substr(9));
 280         }
 281         // complain about mods declared to be loaded, but not found
 282         for(std::vector<ModSpec>::iterator it = m_mods.begin();
 283                         it != m_mods.end(); ++it)
 284                 load_mod_names.erase((*it).name);
 285         for(std::vector<ModSpec>::iterator it = unsatisfied_mods.begin();
 286                         it != unsatisfied_mods.end(); ++it)
 287                 load_mod_names.erase((*it).name);
 288         if(!load_mod_names.empty())
 289         {
 290                 errorstream << "The following mods could not be found:";
 291                 for(std::set<std::string>::iterator it = load_mod_names.begin();
 292                         it != load_mod_names.end(); ++it)
 293                         errorstream << " \"" << (*it) << "\"";
 294                 errorstream << std::endl;
 295         }
 296
 297         // Lock environment
 298         JMutexAutoLock envlock(m_env_mutex);
 299
 300         // Initialize scripting
 301         infostream<<"Server: Initializing Lua"<<std::endl;
 302
 303         m_script = new GameScripting(this);
 304
 305         std::string scriptpath = getBuiltinLuaPath() + DIR_DELIM "init.lua";
 306
 307         if (!m_script->loadScript(scriptpath)) {
 308                 throw ModError("Failed to load and run " + scriptpath);
 309         }
 310
 311
 312         // Print 'em
 313         infostream<<"Server: Loading mods: ";
 314         for(std::vector<ModSpec>::iterator i = m_mods.begin();
 315                         i != m_mods.end(); i++){
 316                 const ModSpec &mod = *i;
 317                 infostream<<mod.name<<" ";
 318         }
 319         infostream<<std::endl;
 320         // Load and run "mod" scripts
 321         for(std::vector<ModSpec>::iterator i = m_mods.begin();
 322                         i != m_mods.end(); i++){
 323                 const ModSpec &mod = *i;
 324                 std::string scriptpath = mod.path + DIR_DELIM + "init.lua";
 325                 infostream<<"  ["<<padStringRight(mod.name, 12)<<"] [\""
 326                                 <<scriptpath<<"\"]"<<std::endl;
 327                 bool success = m_script->loadMod(scriptpath, mod.name);
 328                 if(!success){
 329                         errorstream<<"Server: Failed to load and run "
 330                                         <<scriptpath<<std::endl;
 331                         throw ModError("Failed to load and run "+scriptpath);
 332                 }
 333         }
 334
 335         // Read Textures and calculate sha1 sums
 336         fillMediaCache();
 337
 338         // Apply item aliases in the node definition manager
 339         m_nodedef->updateAliases(m_itemdef);
 340
 341         // Load the mapgen params from global settings now after any
 342         // initial overrides have been set by the mods
 343         m_emerge->loadMapgenParams();
 344
 345         // Initialize Environment
 346         ServerMap *servermap = new ServerMap(path_world, this, m_emerge);
 347         m_env = new ServerEnvironment(servermap, m_script, this, m_path_world);
 348
 349         m_clients.setEnv(m_env);
 350
 351         // Run some callbacks after the MG params have been set up but before activation
 352         m_script->environment_OnMapgenInit(&m_emerge->params);
 353
 354         // Initialize mapgens
 355         m_emerge->initMapgens();
 356
 357         // Give environment reference to scripting api
 358         m_script->initializeEnvironment(m_env);
 359
 360         // Register us to receive map edit events
 361         servermap->addEventReceiver(this);
 362
 363         // If file exists, load environment metadata
 364         if(fs::PathExists(m_path_world + DIR_DELIM "env_meta.txt"))
 365         {
 366                 infostream<<"Server: Loading environment metadata"<<std::endl;
 367                 m_env->loadMeta();
 368         }
 369
 370         // Add some test ActiveBlockModifiers to environment
 371         add_legacy_abms(m_env, m_nodedef);
 372
 373         m_liquid_transform_every = g_settings->getFloat("liquid_update");
 374 }
 375
 376 Server::~Server()
 377 {
 378         infostream<<"Server destructing"<<std::endl;
 379
 380         // Send shutdown message
 381         SendChatMessage(PEER_ID_INEXISTENT, L"*** Server shutting down");
 382
 383         {
 384                 JMutexAutoLock envlock(m_env_mutex);
 385
 386                 // Execute script shutdown hooks
 387                 m_script->on_shutdown();
 388
 389                 infostream<<"Server: Saving players"<<std::endl;
 390                 m_env->saveLoadedPlayers();
 391
 392                 infostream<<"Server: Saving environment metadata"<<std::endl;
 393                 m_env->saveMeta();
 394         }
 395
 396         // Stop threads
 397         stop();
 398         delete m_thread;
 399
 400         // stop all emerge threads before deleting players that may have
 401         // requested blocks to be emerged
 402         m_emerge->stopThreads();
 403
 404         // Delete things in the reverse order of creation
 405         delete m_env;
 406
 407         // N.B. the EmergeManager should be deleted after the Environment since Map
 408         // depends on EmergeManager to write its current params to the map meta
 409         delete m_emerge;
 410         delete m_rollback;
 411         delete m_banmanager;
 412         delete m_event;
 413         delete m_itemdef;
 414         delete m_nodedef;
 415         delete m_craftdef;
 416
 417         // Deinitialize scripting
 418         infostream<<"Server: Deinitializing scripting"<<std::endl;
 419         delete m_script;
 420
 421         // Delete detached inventories
 422         for (std::map<std::string, Inventory*>::iterator
 423                         i = m_detached_inventories.begin();
 424                         i != m_detached_inventories.end(); i++) {
 425                 delete i->second;
 426         }
 427 }
 428
 429 void Server::start(Address bind_addr)
 430 {
 431         DSTACK(__FUNCTION_NAME);
 432         infostream<<"Starting server on "
 433                         << bind_addr.serializeString() <<"..."<<std::endl;
 434
 435         // Stop thread if already running
 436         m_thread->Stop();
 437
 438         // Initialize connection
 439         m_con.SetTimeoutMs(30);
 440         m_con.Serve(bind_addr);
 441
 442         // Start thread
 443         m_thread->Start();
 444
 445         // ASCII art for the win!
 446         actionstream
 447         <<"        .__               __                   __   "<<std::endl
 448         <<"  _____ |__| ____   _____/  |_  ____   _______/  |_ "<<std::endl
 449         <<" /     \\|  |/    \\_/ __ \\   __\\/ __ \\ /  ___/\\   __\\"<<std::endl
 450         <<"|  Y Y  \\  |   |  \\  ___/|  | \\  ___/ \\___ \\  |  |  "<<std::endl
 451         <<"|__|_|  /__|___|  /\\___  >__|  \\___  >____  > |__|  "<<std::endl
 452         <<"      \\/        \\/     \\/          \\/     \\/        "<<std::endl;
 453         actionstream<<"World at ["<<m_path_world<<"]"<<std::endl;
 454         actionstream<<"Server for gameid=\""<<m_gamespec.id
 455                         <<"\" listening on "<<bind_addr.serializeString()<<":"
 456                         <<bind_addr.getPort() << "."<<std::endl;
 457 }
 458
 459 void Server::stop()
 460 {
 461         DSTACK(__FUNCTION_NAME);
 462
 463         infostream<<"Server: Stopping and waiting threads"<<std::endl;
 464
 465         // Stop threads (set run=false first so both start stopping)
 466         m_thread->Stop();
 467         //m_emergethread.setRun(false);
 468         m_thread->Wait();
 469         //m_emergethread.stop();
 470
 471         infostream<<"Server: Threads stopped"<<std::endl;
 472 }
 473
 474 void Server::step(float dtime)
 475 {
 476         DSTACK(__FUNCTION_NAME);
 477         // Limit a bit
 478         if(dtime > 2.0)
 479                 dtime = 2.0;
 480         {
 481                 JMutexAutoLock lock(m_step_dtime_mutex);
 482                 m_step_dtime += dtime;
 483         }
 484         // Throw if fatal error occurred in thread
 485         std::string async_err = m_async_fatal_error.get();
 486         if(async_err != ""){
 487                 throw ServerError(async_err);
 488         }
 489 }
 490
 491 void Server::AsyncRunStep(bool initial_step)
 492 {
 493         DSTACK(__FUNCTION_NAME);
 494
 495         g_profiler->add("Server::AsyncRunStep (num)", 1);
 496
 497         float dtime;
 498         {
 499                 JMutexAutoLock lock1(m_step_dtime_mutex);
 500                 dtime = m_step_dtime;
 501         }
 502
 503         {
 504                 // Send blocks to clients
 505                 SendBlocks(dtime);
 506         }
 507
 508         if((dtime < 0.001) && (initial_step == false))
 509                 return;
 510
 511         g_profiler->add("Server::AsyncRunStep with dtime (num)", 1);
 512
 513         //infostream<<"Server steps "<<dtime<<std::endl;
 514         //infostream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
 515
 516         {
 517                 JMutexAutoLock lock1(m_step_dtime_mutex);
 518                 m_step_dtime -= dtime;
 519         }
 520
 521         /*
 522                 Update uptime
 523         */
 524         {
 525                 m_uptime.set(m_uptime.get() + dtime);
 526         }
 527
 528         handlePeerChanges();
 529
 530         /*
 531                 Update time of day and overall game time
 532         */
 533         {
 534                 JMutexAutoLock envlock(m_env_mutex);
 535
 536                 m_env->setTimeOfDaySpeed(g_settings->getFloat("time_speed"));
 537
 538                 /*
 539                         Send to clients at constant intervals
 540                 */
 541
 542                 m_time_of_day_send_timer -= dtime;
 543                 if(m_time_of_day_send_timer < 0.0)
 544                 {
 545                         m_time_of_day_send_timer = g_settings->getFloat("time_send_interval");
 546                         u16 time = m_env->getTimeOfDay();
 547                         float time_speed = g_settings->getFloat("time_speed");
 548                         SendTimeOfDay(PEER_ID_INEXISTENT, time, time_speed);
 549                 }
 550         }
 551
 552         {
 553                 JMutexAutoLock lock(m_env_mutex);
 554                 // Figure out and report maximum lag to environment
 555                 float max_lag = m_env->getMaxLagEstimate();
 556                 max_lag *= 0.9998; // Decrease slowly (about half per 5 minutes)
 557                 if(dtime > max_lag){
 558                         if(dtime > 0.1 && dtime > max_lag * 2.0)
 559                                 infostream<<"Server: Maximum lag peaked to "<<dtime
 560                                                 <<" s"<<std::endl;
 561                         max_lag = dtime;
 562                 }
 563                 m_env->reportMaxLagEstimate(max_lag);
 564                 // Step environment
 565                 ScopeProfiler sp(g_profiler, "SEnv step");
 566                 ScopeProfiler sp2(g_profiler, "SEnv step avg", SPT_AVG);
 567                 m_env->step(dtime);
 568         }
 569
 570         const float map_timer_and_unload_dtime = 2.92;
 571         if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
 572         {
 573                 JMutexAutoLock lock(m_env_mutex);
 574                 // Run Map's timers and unload unused data
 575                 ScopeProfiler sp(g_profiler, "Server: map timer and unload");
 576                 m_env->getMap().timerUpdate(map_timer_and_unload_dtime,
 577                                 g_settings->getFloat("server_unload_unused_data_timeout"));
 578         }
 579
 580         /*
 581                 Do background stuff
 582         */
 583
 584         /*
 585                 Handle players
 586         */
 587         {
 588                 JMutexAutoLock lock(m_env_mutex);
 589
 590                 std::list<u16> clientids = m_clients.getClientIDs();
 591
 592                 ScopeProfiler sp(g_profiler, "Server: handle players");
 593
 594                 for(std::list<u16>::iterator
 595                         i = clientids.begin();
 596                         i != clientids.end(); ++i)
 597                 {
 598                         PlayerSAO *playersao = getPlayerSAO(*i);
 599                         if(playersao == NULL)
 600                                 continue;
 601
 602                         /*
 603                                 Handle player HPs (die if hp=0)
 604                         */
 605                         if(playersao->m_hp_not_sent && g_settings->getBool("enable_damage"))
 606                         {
 607                                 if(playersao->getHP() == 0)
 608                                         DiePlayer(*i);
 609                                 else
 610                                         SendPlayerHP(*i);
 611                         }
 612
 613                         /*
 614                                 Send player breath if changed
 615                         */
 616                         if(playersao->m_breath_not_sent) {
 617                                 SendPlayerBreath(*i);
 618                         }
 619
 620                         /*
 621                                 Send player inventories if necessary
 622                         */
 623                         if(playersao->m_moved){
 624                                 SendMovePlayer(*i);
 625                                 playersao->m_moved = false;
 626                         }
 627                         if(playersao->m_inventory_not_sent){
 628                                 UpdateCrafting(*i);
 629                                 SendInventory(*i);
 630                         }
 631                 }
 632         }
 633
 634         /* Transform liquids */
 635         m_liquid_transform_timer += dtime;
 636         if(m_liquid_transform_timer >= m_liquid_transform_every)
 637         {
 638                 m_liquid_transform_timer -= m_liquid_transform_every;
 639
 640                 JMutexAutoLock lock(m_env_mutex);
 641
 642                 ScopeProfiler sp(g_profiler, "Server: liquid transform");
 643
 644                 std::map<v3s16, MapBlock*> modified_blocks;
 645                 m_env->getMap().transformLiquids(modified_blocks);
 646 #if 0
 647                 /*
 648                         Update lighting
 649                 */
 650                 core::map<v3s16, MapBlock*> lighting_modified_blocks;
 651                 ServerMap &map = ((ServerMap&)m_env->getMap());
 652                 map.updateLighting(modified_blocks, lighting_modified_blocks);
 653
 654                 // Add blocks modified by lighting to modified_blocks
 655                 for(core::map<v3s16, MapBlock*>::Iterator
 656                                 i = lighting_modified_blocks.getIterator();
 657                                 i.atEnd() == false; i++)
 658                 {
 659                         MapBlock *block = i.getNode()->getValue();
 660                         modified_blocks.insert(block->getPos(), block);
 661                 }
 662 #endif
 663                 /*
 664                         Set the modified blocks unsent for all the clients
 665                 */
 666                 if(modified_blocks.size() > 0)
 667                 {
 668                         SetBlocksNotSent(modified_blocks);
 669                 }
 670         }
 671         m_clients.step(dtime);
 672
 673         m_lag += (m_lag > dtime ? -1 : 1) * dtime/100;
 674 #if USE_CURL
 675         // send masterserver announce
 676         {
 677                 float &counter = m_masterserver_timer;
 678                 if(!isSingleplayer() && (!counter || counter >= 300.0) &&
 679                                 g_settings->getBool("server_announce"))
 680                 {
 681                         ServerList::sendAnnounce(counter ? "update" : "start",
 682                                         m_clients.getPlayerNames(),
 683                                         m_uptime.get(),
 684                                         m_env->getGameTime(),
 685                                         m_lag,
 686                                         m_gamespec.id,
 687                                         m_mods);
 688                         counter = 0.01;
 689                 }
 690                 counter += dtime;
 691         }
 692 #endif
 693
 694         /*
 695                 Check added and deleted active objects
 696         */
 697         {
 698                 //infostream<<"Server: Checking added and deleted active objects"<<std::endl;
 699                 JMutexAutoLock envlock(m_env_mutex);
 700
 701                 m_clients.Lock();
 702                 std::map<u16, RemoteClient*> clients = m_clients.getClientList();
 703                 ScopeProfiler sp(g_profiler, "Server: checking added and deleted objs");
 704
 705                 // Radius inside which objects are active
 706                 s16 radius = g_settings->getS16("active_object_send_range_blocks");
 707                 radius *= MAP_BLOCKSIZE;
 708
 709                 for(std::map<u16, RemoteClient*>::iterator
 710                         i = clients.begin();
 711                         i != clients.end(); ++i)
 712                 {
 713                         RemoteClient *client = i->second;
 714
 715                         // If definitions and textures have not been sent, don't
 716                         // send objects either
 717                         if (client->getState() < CS_DefinitionsSent)
 718                                 continue;
 719
 720                         Player *player = m_env->getPlayer(client->peer_id);
 721                         if(player==NULL)
 722                         {
 723                                 // This can happen if the client timeouts somehow
 724                                 /*infostream<<"WARNING: "<<__FUNCTION_NAME<<": Client "
 725                                                 <<client->peer_id
 726                                                 <<" has no associated player"<<std::endl;*/
 727                                 continue;
 728                         }
 729                         v3s16 pos = floatToInt(player->getPosition(), BS);
 730
 731                         std::set<u16> removed_objects;
 732                         std::set<u16> added_objects;
 733                         m_env->getRemovedActiveObjects(pos, radius,
 734                                         client->m_known_objects, removed_objects);
 735                         m_env->getAddedActiveObjects(pos, radius,
 736                                         client->m_known_objects, added_objects);
 737
 738                         // Ignore if nothing happened
 739                         if(removed_objects.size() == 0 && added_objects.size() == 0)
 740                         {
 741                                 //infostream<<"active objects: none changed"<<std::endl;
 742                                 continue;
 743                         }
 744
 745                         std::string data_buffer;
 746
 747                         char buf[4];
 748
 749                         // Handle removed objects
 750                         writeU16((u8*)buf, removed_objects.size());
 751                         data_buffer.append(buf, 2);
 752                         for(std::set<u16>::iterator
 753                                         i = removed_objects.begin();
 754                                         i != removed_objects.end(); ++i)
 755                         {
 756                                 // Get object
 757                                 u16 id = *i;
 758                                 ServerActiveObject* obj = m_env->getActiveObject(id);
 759
 760                                 // Add to data buffer for sending
 761                                 writeU16((u8*)buf, id);
 762                                 data_buffer.append(buf, 2);
 763
 764                                 // Remove from known objects
 765                                 client->m_known_objects.erase(id);
 766
 767                                 if(obj && obj->m_known_by_count > 0)
 768                                         obj->m_known_by_count--;
 769                         }
 770
 771                         // Handle added objects
 772                         writeU16((u8*)buf, added_objects.size());
 773                         data_buffer.append(buf, 2);
 774                         for(std::set<u16>::iterator
 775                                         i = added_objects.begin();
 776                                         i != added_objects.end(); ++i)
 777                         {
 778                                 // Get object
 779                                 u16 id = *i;
 780                                 ServerActiveObject* obj = m_env->getActiveObject(id);
 781
 782                                 // Get object type
 783                                 u8 type = ACTIVEOBJECT_TYPE_INVALID;
 784                                 if(obj == NULL)
 785                                         infostream<<"WARNING: "<<__FUNCTION_NAME
 786                                                         <<": NULL object"<<std::endl;
 787                                 else
 788                                         type = obj->getSendType();
 789
 790                                 // Add to data buffer for sending
 791                                 writeU16((u8*)buf, id);
 792                                 data_buffer.append(buf, 2);
 793                                 writeU8((u8*)buf, type);
 794                                 data_buffer.append(buf, 1);
 795
 796                                 if(obj)
 797                                         data_buffer.append(serializeLongString(
 798                                                         obj->getClientInitializationData(client->net_proto_version)));
 799                                 else
 800                                         data_buffer.append(serializeLongString(""));
 801
 802                                 // Add to known objects
 803                                 client->m_known_objects.insert(id);
 804
 805                                 if(obj)
 806                                         obj->m_known_by_count++;
 807                         }
 808
 809                         // Send packet
 810                         SharedBuffer<u8> reply(2 + data_buffer.size());
 811                         writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD);
 812                         memcpy((char*)&reply[2], data_buffer.c_str(),
 813                                         data_buffer.size());
 814                         // Send as reliable
 815                         m_clients.send(client->peer_id, 0, reply, true);
 816
 817                         verbosestream<<"Server: Sent object remove/add: "
 818                                         <<removed_objects.size()<<" removed, "
 819                                         <<added_objects.size()<<" added, "
 820                                         <<"packet size is "<<reply.getSize()<<std::endl;
 821                 }
 822                 m_clients.Unlock();
 823 #if 0
 824                 /*
 825                         Collect a list of all the objects known by the clients
 826                         and report it back to the environment.
 827                 */
 828
 829                 core::map<u16, bool> all_known_objects;
 830
 831                 for(core::map<u16, RemoteClient*>::Iterator
 832                         i = m_clients.getIterator();
 833                         i.atEnd() == false; i++)
 834                 {
 835                         RemoteClient *client = i.getNode()->getValue();
 836                         // Go through all known objects of client
 837                         for(core::map<u16, bool>::Iterator
 838                                         i = client->m_known_objects.getIterator();
 839                                         i.atEnd()==false; i++)
 840                         {
 841                                 u16 id = i.getNode()->getKey();
 842                                 all_known_objects[id] = true;
 843                         }
 844                 }
 845
 846                 m_env->setKnownActiveObjects(whatever);
 847 #endif
 848
 849         }
 850
 851         /*
 852                 Send object messages
 853         */
 854         {
 855                 JMutexAutoLock envlock(m_env_mutex);
 856                 ScopeProfiler sp(g_profiler, "Server: sending object messages");
 857
 858                 // Key = object id
 859                 // Value = data sent by object
 860                 std::map<u16, std::list<ActiveObjectMessage>* > buffered_messages;
 861
 862                 // Get active object messages from environment
 863                 for(;;)
 864                 {
 865                         ActiveObjectMessage aom = m_env->getActiveObjectMessage();
 866                         if(aom.id == 0)
 867                                 break;
 868
 869                         std::list<ActiveObjectMessage>* message_list = NULL;
 870                         std::map<u16, std::list<ActiveObjectMessage>* >::iterator n;
 871                         n = buffered_messages.find(aom.id);
 872                         if(n == buffered_messages.end())
 873                         {
 874                                 message_list = new std::list<ActiveObjectMessage>;
 875                                 buffered_messages[aom.id] = message_list;
 876                         }
 877                         else
 878                         {
 879                                 message_list = n->second;
 880                         }
 881                         message_list->push_back(aom);
 882                 }
 883
 884                 m_clients.Lock();
 885                 std::map<u16, RemoteClient*> clients = m_clients.getClientList();
 886                 // Route data to every client
 887                 for(std::map<u16, RemoteClient*>::iterator
 888                         i = clients.begin();
 889                         i != clients.end(); ++i)
 890                 {
 891                         RemoteClient *client = i->second;
 892                         std::string reliable_data;
 893                         std::string unreliable_data;
 894                         // Go through all objects in message buffer
 895                         for(std::map<u16, std::list<ActiveObjectMessage>* >::iterator
 896                                         j = buffered_messages.begin();
 897                                         j != buffered_messages.end(); ++j)
 898                         {
 899                                 // If object is not known by client, skip it
 900                                 u16 id = j->first;
 901                                 if(client->m_known_objects.find(id) == client->m_known_objects.end())
 902                                         continue;
 903                                 // Get message list of object
 904                                 std::list<ActiveObjectMessage>* list = j->second;
 905                                 // Go through every message
 906                                 for(std::list<ActiveObjectMessage>::iterator
 907                                                 k = list->begin(); k != list->end(); ++k)
 908                                 {
 909                                         // Compose the full new data with header
 910                                         ActiveObjectMessage aom = *k;
 911                                         std::string new_data;
 912                                         // Add object id
 913                                         char buf[2];
 914                                         writeU16((u8*)&buf[0], aom.id);
 915                                         new_data.append(buf, 2);
 916                                         // Add data
 917                                         new_data += serializeString(aom.datastring);
 918                                         // Add data to buffer
 919                                         if(aom.reliable)
 920                                                 reliable_data += new_data;
 921                                         else
 922                                                 unreliable_data += new_data;
 923                                 }
 924                         }
 925                         /*
 926                                 reliable_data and unreliable_data are now ready.
 927                                 Send them.
 928                         */
 929                         if(reliable_data.size() > 0)
 930                         {
 931                                 SharedBuffer<u8> reply(2 + reliable_data.size());
 932                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
 933                                 memcpy((char*)&reply[2], reliable_data.c_str(),
 934                                                 reliable_data.size());
 935                                 // Send as reliable
 936                                 m_clients.send(client->peer_id, 0, reply, true);
 937                         }
 938                         if(unreliable_data.size() > 0)
 939                         {
 940                                 SharedBuffer<u8> reply(2 + unreliable_data.size());
 941                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
 942                                 memcpy((char*)&reply[2], unreliable_data.c_str(),
 943                                                 unreliable_data.size());
 944                                 // Send as unreliable
 945                                 m_clients.send(client->peer_id, 1, reply, false);
 946                         }
 947
 948                         /*if(reliable_data.size() > 0 || unreliable_data.size() > 0)
 949                         {
 950                                 infostream<<"Server: Size of object message data: "
 951                                                 <<"reliable: "<<reliable_data.size()
 952                                                 <<", unreliable: "<<unreliable_data.size()
 953                                                 <<std::endl;
 954                         }*/
 955                 }
 956                 m_clients.Unlock();
 957
 958                 // Clear buffered_messages
 959                 for(std::map<u16, std::list<ActiveObjectMessage>* >::iterator
 960                                 i = buffered_messages.begin();
 961                                 i != buffered_messages.end(); ++i)
 962                 {
 963                         delete i->second;
 964                 }
 965         }
 966
 967         /*
 968                 Send queued-for-sending map edit events.
 969         */
 970         {
 971                 // We will be accessing the environment
 972                 JMutexAutoLock lock(m_env_mutex);
 973
 974                 // Don't send too many at a time
 975                 //u32 count = 0;
 976
 977                 // Single change sending is disabled if queue size is not small
 978                 bool disable_single_change_sending = false;
 979                 if(m_unsent_map_edit_queue.size() >= 4)
 980                         disable_single_change_sending = true;
 981
 982                 int event_count = m_unsent_map_edit_queue.size();
 983
 984                 // We'll log the amount of each
 985                 Profiler prof;
 986
 987                 while(m_unsent_map_edit_queue.size() != 0)
 988                 {
 989                         MapEditEvent* event = m_unsent_map_edit_queue.pop_front();
 990
 991                         // Players far away from the change are stored here.
 992                         // Instead of sending the changes, MapBlocks are set not sent
 993                         // for them.
 994                         std::list<u16> far_players;
 995
 996                         if(event->type == MEET_ADDNODE || event->type == MEET_SWAPNODE)
 997                         {
 998                                 //infostream<<"Server: MEET_ADDNODE"<<std::endl;
 999                                 prof.add("MEET_ADDNODE", 1);
1000                                 if(disable_single_change_sending)
1001                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1002                                                         &far_players, 5, event->type == MEET_ADDNODE);
1003                                 else
1004                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1005                                                         &far_players, 30, event->type == MEET_ADDNODE);
1006                         }
1007                         else if(event->type == MEET_REMOVENODE)
1008                         {
1009                                 //infostream<<"Server: MEET_REMOVENODE"<<std::endl;
1010                                 prof.add("MEET_REMOVENODE", 1);
1011                                 if(disable_single_change_sending)
1012                                         sendRemoveNode(event->p, event->already_known_by_peer,
1013                                                         &far_players, 5);
1014                                 else
1015                                         sendRemoveNode(event->p, event->already_known_by_peer,
1016                                                         &far_players, 30);
1017                         }
1018                         else if(event->type == MEET_BLOCK_NODE_METADATA_CHANGED)
1019                         {
1020                                 infostream<<"Server: MEET_BLOCK_NODE_METADATA_CHANGED"<<std::endl;
1021                                 prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
1022                                 setBlockNotSent(event->p);
1023                         }
1024                         else if(event->type == MEET_OTHER)
1025                         {
1026                                 infostream<<"Server: MEET_OTHER"<<std::endl;
1027                                 prof.add("MEET_OTHER", 1);
1028                                 for(std::set<v3s16>::iterator
1029                                                 i = event->modified_blocks.begin();
1030                                                 i != event->modified_blocks.end(); ++i)
1031                                 {
1032                                         setBlockNotSent(*i);
1033                                 }
1034                         }
1035                         else
1036                         {
1037                                 prof.add("unknown", 1);
1038                                 infostream<<"WARNING: Server: Unknown MapEditEvent "
1039                                                 <<((u32)event->type)<<std::endl;
1040                         }
1041
1042                         /*
1043                                 Set blocks not sent to far players
1044                         */
1045                         if(far_players.size() > 0)
1046                         {
1047                                 // Convert list format to that wanted by SetBlocksNotSent
1048                                 std::map<v3s16, MapBlock*> modified_blocks2;
1049                                 for(std::set<v3s16>::iterator
1050                                                 i = event->modified_blocks.begin();
1051                                                 i != event->modified_blocks.end(); ++i)
1052                                 {
1053                                         modified_blocks2[*i] =
1054                                                         m_env->getMap().getBlockNoCreateNoEx(*i);
1055                                 }
1056                                 // Set blocks not sent
1057                                 for(std::list<u16>::iterator
1058                                                 i = far_players.begin();
1059                                                 i != far_players.end(); ++i)
1060                                 {
1061                                         u16 peer_id = *i;
1062                                         RemoteClient *client = getClient(peer_id);
1063                                         if(client==NULL)
1064                                                 continue;
1065                                         client->SetBlocksNotSent(modified_blocks2);
1066                                 }
1067                         }
1068
1069                         delete event;
1070
1071                         /*// Don't send too many at a time
1072                         count++;
1073                         if(count >= 1 && m_unsent_map_edit_queue.size() < 100)
1074                                 break;*/
1075                 }
1076
1077                 if(event_count >= 5){
1078                         infostream<<"Server: MapEditEvents:"<<std::endl;
1079                         prof.print(infostream);
1080                 } else if(event_count != 0){
1081                         verbosestream<<"Server: MapEditEvents:"<<std::endl;
1082                         prof.print(verbosestream);
1083                 }
1084
1085         }
1086
1087         /*
1088                 Trigger emergethread (it somehow gets to a non-triggered but
1089                 bysy state sometimes)
1090         */
1091         {
1092                 float &counter = m_emergethread_trigger_timer;
1093                 counter += dtime;
1094                 if(counter >= 2.0)
1095                 {
1096                         counter = 0.0;
1097
1098                         m_emerge->startThreads();
1099
1100                         // Update m_enable_rollback_recording here too
1101                         m_enable_rollback_recording =
1102                                         g_settings->getBool("enable_rollback_recording");
1103                 }
1104         }
1105
1106         // Save map, players and auth stuff
1107         {
1108                 float &counter = m_savemap_timer;
1109                 counter += dtime;
1110                 if(counter >= g_settings->getFloat("server_map_save_interval"))
1111                 {
1112                         counter = 0.0;
1113                         JMutexAutoLock lock(m_env_mutex);
1114
1115                         ScopeProfiler sp(g_profiler, "Server: saving stuff");
1116
1117                         // Save ban file
1118                         if (m_banmanager->isModified()) {
1119                                 m_banmanager->save();
1120                         }
1121
1122                         // Save changed parts of map
1123                         m_env->getMap().save(MOD_STATE_WRITE_NEEDED);
1124
1125                         // Save players
1126                         m_env->saveLoadedPlayers();
1127
1128                         // Save environment metadata
1129                         m_env->saveMeta();
1130                 }
1131         }
1132 }
1133
1134 void Server::Receive()
1135 {
1136         DSTACK(__FUNCTION_NAME);
1137         SharedBuffer<u8> data;
1138         u16 peer_id;
1139         u32 datasize;
1140         try{
1141                 datasize = m_con.Receive(peer_id,data);
1142                 ProcessData(*data, datasize, peer_id);
1143         }
1144         catch(con::InvalidIncomingDataException &e)
1145         {
1146                 infostream<<"Server::Receive(): "
1147                                 "InvalidIncomingDataException: what()="
1148                                 <<e.what()<<std::endl;
1149         }
1150         catch(SerializationError &e) {
1151                 infostream<<"Server::Receive(): "
1152                                 "SerializationError: what()="
1153                                 <<e.what()<<std::endl;
1154         }
1155         catch(ClientStateError &e)
1156         {
1157                 errorstream << "ProcessData: peer=" << peer_id  << e.what() << std::endl;
1158                 DenyAccess(peer_id, L"Your client sent something server didn't expect."
1159                                 L"Try reconnecting or updating your client");
1160         }
1161         catch(con::PeerNotFoundException &e)
1162         {
1163                 // Do nothing
1164         }
1165 }
1166
1167 PlayerSAO* Server::StageTwoClientInit(u16 peer_id)
1168 {
1169         std::string playername = "";
1170         PlayerSAO *playersao = NULL;
1171         m_clients.Lock();
1172         RemoteClient* client = m_clients.lockedGetClientNoEx(peer_id, CS_InitDone);
1173         if (client != NULL) {
1174                 playername = client->getName();
1175                 playersao = emergePlayer(playername.c_str(), peer_id);
1176         }
1177         m_clients.Unlock();
1178
1179         RemotePlayer *player =
1180                 static_cast<RemotePlayer*>(m_env->getPlayer(playername.c_str()));
1181
1182         // If failed, cancel
1183         if((playersao == NULL) || (player == NULL))
1184         {
1185                 if(player && player->peer_id != 0){
1186                         errorstream<<"Server: "<<playername<<": Failed to emerge player"
1187                                         <<" (player allocated to an another client)"<<std::endl;
1188                         DenyAccess(peer_id, L"Another client is connected with this "
1189                                         L"name. If your client closed unexpectedly, try again in "
1190                                         L"a minute.");
1191                 } else {
1192                         errorstream<<"Server: "<<playername<<": Failed to emerge player"
1193                                         <<std::endl;
1194                         DenyAccess(peer_id, L"Could not allocate player.");
1195                 }
1196                 return NULL;
1197         }
1198
1199         /*
1200                 Send complete position information
1201         */
1202         SendMovePlayer(peer_id);
1203
1204         // Send privileges
1205         SendPlayerPrivileges(peer_id);
1206
1207         // Send inventory formspec
1208         SendPlayerInventoryFormspec(peer_id);
1209
1210         // Send inventory
1211         UpdateCrafting(peer_id);
1212         SendInventory(peer_id);
1213
1214         // Send HP
1215         if(g_settings->getBool("enable_damage"))
1216                 SendPlayerHP(peer_id);
1217
1218         // Send Breath
1219         SendPlayerBreath(peer_id);
1220
1221         // Show death screen if necessary
1222         if(player->hp == 0)
1223                 SendDeathscreen(peer_id, false, v3f(0,0,0));
1224
1225         // Note things in chat if not in simple singleplayer mode
1226         if(!m_simple_singleplayer_mode)
1227         {
1228                 // Send information about server to player in chat
1229                 SendChatMessage(peer_id, getStatusString());
1230
1231                 // Send information about joining in chat
1232                 {
1233                         std::wstring name = L"unknown";
1234                         Player *player = m_env->getPlayer(peer_id);
1235                         if(player != NULL)
1236                                 name = narrow_to_wide(player->getName());
1237
1238                         std::wstring message;
1239                         message += L"*** ";
1240                         message += name;
1241                         message += L" joined the game.";
1242                         SendChatMessage(PEER_ID_INEXISTENT,message);
1243                 }
1244         }
1245         Address addr = getPeerAddress(player->peer_id);
1246         std::string ip_str = addr.serializeString();
1247         actionstream<<player->getName() <<" [" << ip_str << "] joins game. " << std::endl;
1248         /*
1249                 Print out action
1250         */
1251         {
1252                 std::vector<std::string> names = m_clients.getPlayerNames();
1253
1254                 actionstream<<player->getName() <<" joins game. List of players: ";
1255
1256                 for (std::vector<std::string>::iterator i = names.begin();
1257                                 i != names.end(); i++)
1258                 {
1259                         actionstream << *i << " ";
1260                 }
1261
1262                 actionstream << player->getName() <<std::endl;
1263         }
1264         return playersao;
1265 }
1266
1267 void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
1268 {
1269         DSTACK(__FUNCTION_NAME);
1270         // Environment is locked first.
1271         JMutexAutoLock envlock(m_env_mutex);
1272
1273         ScopeProfiler sp(g_profiler, "Server::ProcessData");
1274
1275         std::string addr_s;
1276         try{
1277                 Address address = getPeerAddress(peer_id);
1278                 addr_s = address.serializeString();
1279
1280                 // drop player if is ip is banned
1281                 if(m_banmanager->isIpBanned(addr_s)){
1282                         std::string ban_name = m_banmanager->getBanName(addr_s);
1283                         infostream<<"Server: A banned client tried to connect from "
1284                                         <<addr_s<<"; banned name was "
1285                                         <<ban_name<<std::endl;
1286                         // This actually doesn't seem to transfer to the client
1287                         DenyAccess(peer_id, L"Your ip is banned. Banned name was "
1288                                         +narrow_to_wide(ban_name));
1289                         return;
1290                 }
1291         }
1292         catch(con::PeerNotFoundException &e)
1293         {
1294                 /*
1295                  * no peer for this packet found
1296                  * most common reason is peer timeout, e.g. peer didn't
1297                  * respond for some time, your server was overloaded or
1298                  * things like that.
1299                  */
1300                 infostream<<"Server::ProcessData(): Cancelling: peer "
1301                                 <<peer_id<<" not found"<<std::endl;
1302                 return;
1303         }
1304
1305         try
1306         {
1307
1308         if(datasize < 2)
1309                 return;
1310
1311         ToServerCommand command = (ToServerCommand)readU16(&data[0]);
1312
1313         if(command == TOSERVER_INIT)
1314         {
1315                 // [0] u16 TOSERVER_INIT
1316                 // [2] u8 SER_FMT_VER_HIGHEST_READ
1317                 // [3] u8[20] player_name
1318                 // [23] u8[28] password <--- can be sent without this, from old versions
1319
1320                 if(datasize < 2+1+PLAYERNAME_SIZE)
1321                         return;
1322
1323                 RemoteClient* client = getClient(peer_id, CS_Created);
1324
1325                 // If net_proto_version is set, this client has already been handled
1326                 if(client->getState() > CS_Created)
1327                 {
1328                         verbosestream<<"Server: Ignoring multiple TOSERVER_INITs from "
1329                                         <<addr_s<<" (peer_id="<<peer_id<<")"<<std::endl;
1330                         return;
1331                 }
1332
1333                 verbosestream<<"Server: Got TOSERVER_INIT from "<<addr_s<<" (peer_id="
1334                                 <<peer_id<<")"<<std::endl;
1335
1336                 // Do not allow multiple players in simple singleplayer mode.
1337                 // This isn't a perfect way to do it, but will suffice for now
1338                 if(m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1){
1339                         infostream<<"Server: Not allowing another client ("<<addr_s
1340                                         <<") to connect in simple singleplayer mode"<<std::endl;
1341                         DenyAccess(peer_id, L"Running in simple singleplayer mode.");
1342                         return;
1343                 }
1344
1345                 // First byte after command is maximum supported
1346                 // serialization version
1347                 u8 client_max = data[2];
1348                 u8 our_max = SER_FMT_VER_HIGHEST_READ;
1349                 // Use the highest version supported by both
1350                 u8 deployed = std::min(client_max, our_max);
1351                 // If it's lower than the lowest supported, give up.
1352                 if(deployed < SER_FMT_VER_LOWEST)
1353                         deployed = SER_FMT_VER_INVALID;
1354
1355                 if(deployed == SER_FMT_VER_INVALID)
1356                 {
1357                         actionstream<<"Server: A mismatched client tried to connect from "
1358                                         <<addr_s<<std::endl;
1359                         infostream<<"Server: Cannot negotiate serialization version with "
1360                                         <<addr_s<<std::endl;
1361                         DenyAccess(peer_id, std::wstring(
1362                                         L"Your client's version is not supported.\n"
1363                                         L"Server version is ")
1364                                         + narrow_to_wide(minetest_version_simple) + L"."
1365                         );
1366                         return;
1367                 }
1368
1369                 client->setPendingSerializationVersion(deployed);
1370
1371                 /*
1372                         Read and check network protocol version
1373                 */
1374
1375                 u16 min_net_proto_version = 0;
1376                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
1377                         min_net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
1378
1379                 // Use same version as minimum and maximum if maximum version field
1380                 // doesn't exist (backwards compatibility)
1381                 u16 max_net_proto_version = min_net_proto_version;
1382                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2+2)
1383                         max_net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2]);
1384
1385                 // Start with client's maximum version
1386                 u16 net_proto_version = max_net_proto_version;
1387
1388                 // Figure out a working version if it is possible at all
1389                 if(max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
1390                                 min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX)
1391                 {
1392                         // If maximum is larger than our maximum, go with our maximum
1393                         if(max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
1394                                 net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
1395                         // Else go with client's maximum
1396                         else
1397                                 net_proto_version = max_net_proto_version;
1398                 }
1399
1400                 verbosestream<<"Server: "<<addr_s<<": Protocol version: min: "
1401                                 <<min_net_proto_version<<", max: "<<max_net_proto_version
1402                                 <<", chosen: "<<net_proto_version<<std::endl;
1403
1404                 client->net_proto_version = net_proto_version;
1405
1406                 if(net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
1407                                 net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
1408                 {
1409                         actionstream<<"Server: A mismatched client tried to connect from "
1410                                         <<addr_s<<std::endl;
1411                         DenyAccess(peer_id, std::wstring(
1412                                         L"Your client's version is not supported.\n"
1413                                         L"Server version is ")
1414                                         + narrow_to_wide(minetest_version_simple) + L",\n"
1415                                         + L"server's PROTOCOL_VERSION is "
1416                                         + narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MIN))
1417                                         + L"..."
1418                                         + narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MAX))
1419                                         + L", client's PROTOCOL_VERSION is "
1420                                         + narrow_to_wide(itos(min_net_proto_version))
1421                                         + L"..."
1422                                         + narrow_to_wide(itos(max_net_proto_version))
1423                         );
1424                         return;
1425                 }
1426
1427                 if(g_settings->getBool("strict_protocol_version_checking"))
1428                 {
1429                         if(net_proto_version != LATEST_PROTOCOL_VERSION)
1430                         {
1431                                 actionstream<<"Server: A mismatched (strict) client tried to "
1432                                                 <<"connect from "<<addr_s<<std::endl;
1433                                 DenyAccess(peer_id, std::wstring(
1434                                                 L"Your client's version is not supported.\n"
1435                                                 L"Server version is ")
1436                                                 + narrow_to_wide(minetest_version_simple) + L",\n"
1437                                                 + L"server's PROTOCOL_VERSION (strict) is "
1438                                                 + narrow_to_wide(itos(LATEST_PROTOCOL_VERSION))
1439                                                 + L", client's PROTOCOL_VERSION is "
1440                                                 + narrow_to_wide(itos(min_net_proto_version))
1441                                                 + L"..."
1442                                                 + narrow_to_wide(itos(max_net_proto_version))
1443                                 );
1444                                 return;
1445                         }
1446                 }
1447
1448                 /*
1449                         Set up player
1450                 */
1451
1452                 // Get player name
1453                 char playername[PLAYERNAME_SIZE];
1454                 for(u32 i=0; i<PLAYERNAME_SIZE-1; i++)
1455                 {
1456                         playername[i] = data[3+i];
1457                 }
1458                 playername[PLAYERNAME_SIZE-1] = 0;
1459
1460                 if(playername[0]=='\0')
1461                 {
1462                         actionstream<<"Server: Player with an empty name "
1463                                         <<"tried to connect from "<<addr_s<<std::endl;
1464                         DenyAccess(peer_id, L"Empty name");
1465                         return;
1466                 }
1467
1468                 if(string_allowed(playername, PLAYERNAME_ALLOWED_CHARS)==false)
1469                 {
1470                         actionstream<<"Server: Player with an invalid name "
1471                                         <<"tried to connect from "<<addr_s<<std::endl;
1472                         DenyAccess(peer_id, L"Name contains unallowed characters");
1473                         return;
1474                 }
1475
1476                 if(!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0)
1477                 {
1478                         actionstream<<"Server: Player with the name \"singleplayer\" "
1479                                         <<"tried to connect from "<<addr_s<<std::endl;
1480                         DenyAccess(peer_id, L"Name is not allowed");
1481                         return;
1482                 }
1483
1484                 {
1485                         std::string reason;
1486                         if(m_script->on_prejoinplayer(playername, addr_s, reason))
1487                         {
1488                                 actionstream<<"Server: Player with the name \""<<playername<<"\" "
1489                                                 <<"tried to connect from "<<addr_s<<" "
1490                                                 <<"but it was disallowed for the following reason: "
1491                                                 <<reason<<std::endl;
1492                                 DenyAccess(peer_id, narrow_to_wide(reason.c_str()));
1493                                 return;
1494                         }
1495                 }
1496
1497                 infostream<<"Server: New connection: \""<<playername<<"\" from "
1498                                 <<addr_s<<" (peer_id="<<peer_id<<")"<<std::endl;
1499
1500                 // Get password
1501                 char given_password[PASSWORD_SIZE];
1502                 if(datasize < 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE)
1503                 {
1504                         // old version - assume blank password
1505                         given_password[0] = 0;
1506                 }
1507                 else
1508                 {
1509                         for(u32 i=0; i<PASSWORD_SIZE-1; i++)
1510                         {
1511                                 given_password[i] = data[23+i];
1512                         }
1513                         given_password[PASSWORD_SIZE-1] = 0;
1514                 }
1515
1516                 if(!base64_is_valid(given_password)){
1517                         actionstream<<"Server: "<<playername
1518                                         <<" supplied invalid password hash"<<std::endl;
1519                         DenyAccess(peer_id, L"Invalid password hash");
1520                         return;
1521                 }
1522
1523                 // Enforce user limit.
1524                 // Don't enforce for users that have some admin right
1525                 if(m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") &&
1526                                 !checkPriv(playername, "server") &&
1527                                 !checkPriv(playername, "ban") &&
1528                                 !checkPriv(playername, "privs") &&
1529                                 !checkPriv(playername, "password") &&
1530                                 playername != g_settings->get("name"))
1531                 {
1532                         actionstream<<"Server: "<<playername<<" tried to join, but there"
1533                                         <<" are already max_users="
1534                                         <<g_settings->getU16("max_users")<<" players."<<std::endl;
1535                         DenyAccess(peer_id, L"Too many users.");
1536                         return;
1537                 }
1538
1539                 std::string checkpwd; // Password hash to check against
1540                 bool has_auth = m_script->getAuth(playername, &checkpwd, NULL);
1541
1542                 // If no authentication info exists for user, create it
1543                 if(!has_auth){
1544                         if(!isSingleplayer() &&
1545                                         g_settings->getBool("disallow_empty_password") &&
1546                                         std::string(given_password) == ""){
1547                                 actionstream<<"Server: "<<playername
1548                                                 <<" supplied empty password"<<std::endl;
1549                                 DenyAccess(peer_id, L"Empty passwords are "
1550                                                 L"disallowed. Set a password and try again.");
1551                                 return;
1552                         }
1553                         std::wstring raw_default_password =
1554                                 narrow_to_wide(g_settings->get("default_password"));
1555                         std::string initial_password =
1556                                 translatePassword(playername, raw_default_password);
1557
1558                         // If default_password is empty, allow any initial password
1559                         if (raw_default_password.length() == 0)
1560                                 initial_password = given_password;
1561
1562                         m_script->createAuth(playername, initial_password);
1563                 }
1564
1565                 has_auth = m_script->getAuth(playername, &checkpwd, NULL);
1566
1567                 if(!has_auth){
1568                         actionstream<<"Server: "<<playername<<" cannot be authenticated"
1569                                         <<" (auth handler does not work?)"<<std::endl;
1570                         DenyAccess(peer_id, L"Not allowed to login");
1571                         return;
1572                 }
1573
1574                 if(given_password != checkpwd){
1575                         actionstream<<"Server: "<<playername<<" supplied wrong password"
1576                                         <<std::endl;
1577                         DenyAccess(peer_id, L"Wrong password");
1578                         return;
1579                 }
1580
1581                 RemotePlayer *player =
1582                                 static_cast<RemotePlayer*>(m_env->getPlayer(playername));
1583
1584                 if(player && player->peer_id != 0){
1585                         errorstream<<"Server: "<<playername<<": Failed to emerge player"
1586                                         <<" (player allocated to an another client)"<<std::endl;
1587                         DenyAccess(peer_id, L"Another client is connected with this "
1588                                         L"name. If your client closed unexpectedly, try again in "
1589                                         L"a minute.");
1590                 }
1591
1592                 m_clients.setPlayerName(peer_id,playername);
1593
1594                 /*
1595                         Answer with a TOCLIENT_INIT
1596                 */
1597                 {
1598                         SharedBuffer<u8> reply(2+1+6+8+4);
1599                         writeU16(&reply[0], TOCLIENT_INIT);
1600                         writeU8(&reply[2], deployed);
1601                         //send dummy pos for legacy reasons only
1602                         writeV3S16(&reply[2+1], floatToInt(v3f(0,0,0), BS));
1603                         writeU64(&reply[2+1+6], m_env->getServerMap().getSeed());
1604                         writeF1000(&reply[2+1+6+8], g_settings->getFloat("dedicated_server_step"));
1605
1606                         // Send as reliable
1607                         m_clients.send(peer_id, 0, reply, true);
1608                         m_clients.event(peer_id, CSE_Init);
1609                 }
1610
1611                 return;
1612         }
1613
1614         if(command == TOSERVER_INIT2)
1615         {
1616
1617                 verbosestream<<"Server: Got TOSERVER_INIT2 from "
1618                                 <<peer_id<<std::endl;
1619
1620                 m_clients.event(peer_id, CSE_GotInit2);
1621                 u16 protocol_version = m_clients.getProtocolVersion(peer_id);
1622
1623
1624                 ///// begin compatibility code
1625                 PlayerSAO* playersao = NULL;
1626                 if (protocol_version <= 22) {
1627                         playersao = StageTwoClientInit(peer_id);
1628
1629                         if (playersao == NULL) {
1630                                 errorstream
1631                                         << "TOSERVER_INIT2 stage 2 client init failed for peer "
1632                                         << peer_id << std::endl;
1633                                 return;
1634                         }
1635                 }
1636                 ///// end compatibility code
1637
1638                 /*
1639                         Send some initialization data
1640                 */
1641
1642                 infostream<<"Server: Sending content to "
1643                                 <<getPlayerName(peer_id)<<std::endl;
1644
1645                 // Send player movement settings
1646                 SendMovement(peer_id);
1647
1648                 // Send item definitions
1649                 SendItemDef(peer_id, m_itemdef, protocol_version);
1650
1651                 // Send node definitions
1652                 SendNodeDef(peer_id, m_nodedef, protocol_version);
1653
1654                 m_clients.event(peer_id, CSE_SetDefinitionsSent);
1655
1656                 // Send media announcement
1657                 sendMediaAnnouncement(peer_id);
1658
1659                 // Send detached inventories
1660                 sendDetachedInventories(peer_id);
1661
1662                 // Send time of day
1663                 u16 time = m_env->getTimeOfDay();
1664                 float time_speed = g_settings->getFloat("time_speed");
1665                 SendTimeOfDay(peer_id, time, time_speed);
1666
1667                 ///// begin compatibility code
1668                 if (protocol_version <= 22) {
1669                         m_clients.event(peer_id, CSE_SetClientReady);
1670                         m_script->on_joinplayer(playersao);
1671                 }
1672                 ///// end compatibility code
1673
1674                 // Warnings about protocol version can be issued here
1675                 if(getClient(peer_id)->net_proto_version < LATEST_PROTOCOL_VERSION)
1676                 {
1677                         SendChatMessage(peer_id, L"# Server: WARNING: YOUR CLIENT'S "
1678                                         L"VERSION MAY NOT BE FULLY COMPATIBLE WITH THIS SERVER!");
1679                 }
1680
1681                 return;
1682         }
1683
1684         u8 peer_ser_ver = getClient(peer_id, CS_InitDone)->serialization_version;
1685         u16 peer_proto_ver = getClient(peer_id, CS_InitDone)->net_proto_version;
1686
1687         if(peer_ser_ver == SER_FMT_VER_INVALID)
1688         {
1689                 errorstream<<"Server::ProcessData(): Cancelling: Peer"
1690                                 " serialization format invalid or not initialized."
1691                                 " Skipping incoming command="<<command<<std::endl;
1692                 return;
1693         }
1694
1695         /* Handle commands relate to client startup */
1696         if(command == TOSERVER_REQUEST_MEDIA) {
1697                 std::string datastring((char*)&data[2], datasize-2);
1698                 std::istringstream is(datastring, std::ios_base::binary);
1699
1700                 std::list<std::string> tosend;
1701                 u16 numfiles = readU16(is);
1702
1703                 infostream<<"Sending "<<numfiles<<" files to "
1704                                 <<getPlayerName(peer_id)<<std::endl;
1705                 verbosestream<<"TOSERVER_REQUEST_MEDIA: "<<std::endl;
1706
1707                 for(int i = 0; i < numfiles; i++) {
1708                         std::string name = deSerializeString(is);
1709                         tosend.push_back(name);
1710                         verbosestream<<"TOSERVER_REQUEST_MEDIA: requested file "
1711                                         <<name<<std::endl;
1712                 }
1713
1714                 sendRequestedMedia(peer_id, tosend);
1715                 return;
1716         }
1717         else if(command == TOSERVER_RECEIVED_MEDIA) {
1718                 return;
1719         }
1720         else if(command == TOSERVER_CLIENT_READY) {
1721                 // clients <= protocol version 22 did not send ready message,
1722                 // they're already initialized
1723                 if (peer_proto_ver <= 22) {
1724                         infostream << "Client sent message not expected by a "
1725                                 << "client using protocol version <= 22,"
1726                                 << "disconnecing peer_id: " << peer_id << std::endl;
1727                         m_con.DisconnectPeer(peer_id);
1728                         return;
1729                 }
1730
1731                 PlayerSAO* playersao = StageTwoClientInit(peer_id);
1732
1733                 if (playersao == NULL) {
1734                         errorstream
1735                                 << "TOSERVER_CLIENT_READY stage 2 client init failed for peer_id: "
1736                                 << peer_id << std::endl;
1737                         m_con.DisconnectPeer(peer_id);
1738                         return;
1739                 }
1740
1741
1742                 if(datasize < 2+8) {
1743                         errorstream
1744                                 << "TOSERVER_CLIENT_READY client sent inconsistent data, disconnecting peer_id: "
1745                                 << peer_id << std::endl;
1746                         m_con.DisconnectPeer(peer_id);
1747                         return;
1748                 }
1749
1750                 m_clients.setClientVersion(
1751                                 peer_id,
1752                                 data[2], data[3], data[4],
1753                                 std::string((char*) &data[8],(u16) data[6]));
1754
1755                 m_clients.event(peer_id, CSE_SetClientReady);
1756                 m_script->on_joinplayer(playersao);
1757
1758         }
1759         else if(command == TOSERVER_GOTBLOCKS)
1760         {
1761                 if(datasize < 2+1)
1762                         return;
1763
1764                 /*
1765                         [0] u16 command
1766                         [2] u8 count
1767                         [3] v3s16 pos_0
1768                         [3+6] v3s16 pos_1
1769                         ...
1770                 */
1771
1772                 u16 count = data[2];
1773                 for(u16 i=0; i<count; i++)
1774                 {
1775                         if((s16)datasize < 2+1+(i+1)*6)
1776                                 throw con::InvalidIncomingDataException
1777                                         ("GOTBLOCKS length is too short");
1778                         v3s16 p = readV3S16(&data[2+1+i*6]);
1779                         /*infostream<<"Server: GOTBLOCKS ("
1780                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1781                         RemoteClient *client = getClient(peer_id);
1782                         client->GotBlock(p);
1783                 }
1784                 return;
1785         }
1786
1787         if (m_clients.getClientState(peer_id) < CS_Active)
1788         {
1789                 if (command == TOSERVER_PLAYERPOS) return;
1790
1791                 errorstream<<"Got packet command: " << command << " for peer id "
1792                                 << peer_id << " but client isn't active yet. Dropping packet "
1793                                 <<std::endl;
1794                 return;
1795         }
1796
1797         Player *player = m_env->getPlayer(peer_id);
1798         if(player == NULL) {
1799                 errorstream<<"Server::ProcessData(): Cancelling: "
1800                                 "No player for peer_id="<<peer_id
1801                                 << " disconnecting peer!" <<std::endl;
1802                 m_con.DisconnectPeer(peer_id);
1803                 return;
1804         }
1805
1806         PlayerSAO *playersao = player->getPlayerSAO();
1807         if(playersao == NULL) {
1808                 errorstream<<"Server::ProcessData(): Cancelling: "
1809                                 "No player object for peer_id="<<peer_id
1810                                 << " disconnecting peer!" <<std::endl;
1811                 m_con.DisconnectPeer(peer_id);
1812                 return;
1813         }
1814
1815         if(command == TOSERVER_PLAYERPOS)
1816         {
1817                 if(datasize < 2+12+12+4+4)
1818                         return;
1819
1820                 u32 start = 0;
1821                 v3s32 ps = readV3S32(&data[start+2]);
1822                 v3s32 ss = readV3S32(&data[start+2+12]);
1823                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
1824                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
1825                 u32 keyPressed = 0;
1826                 if(datasize >= 2+12+12+4+4+4)
1827                         keyPressed = (u32)readU32(&data[2+12+12+4+4]);
1828                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
1829                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
1830                 pitch = wrapDegrees(pitch);
1831                 yaw = wrapDegrees(yaw);
1832
1833                 player->setPosition(position);
1834                 player->setSpeed(speed);
1835                 player->setPitch(pitch);
1836                 player->setYaw(yaw);
1837                 player->keyPressed=keyPressed;
1838                 player->control.up = (bool)(keyPressed&1);
1839                 player->control.down = (bool)(keyPressed&2);
1840                 player->control.left = (bool)(keyPressed&4);
1841                 player->control.right = (bool)(keyPressed&8);
1842                 player->control.jump = (bool)(keyPressed&16);
1843                 player->control.aux1 = (bool)(keyPressed&32);
1844                 player->control.sneak = (bool)(keyPressed&64);
1845                 player->control.LMB = (bool)(keyPressed&128);
1846                 player->control.RMB = (bool)(keyPressed&256);
1847
1848                 bool cheated = playersao->checkMovementCheat();
1849                 if(cheated){
1850                         // Call callbacks
1851                         m_script->on_cheat(playersao, "moved_too_fast");
1852                 }
1853
1854                 /*infostream<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
1855                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
1856                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
1857         }
1858         else if(command == TOSERVER_DELETEDBLOCKS)
1859         {
1860                 if(datasize < 2+1)
1861                         return;
1862
1863                 /*
1864                         [0] u16 command
1865                         [2] u8 count
1866                         [3] v3s16 pos_0
1867                         [3+6] v3s16 pos_1
1868                         ...
1869                 */
1870
1871                 u16 count = data[2];
1872                 for(u16 i=0; i<count; i++)
1873                 {
1874                         if((s16)datasize < 2+1+(i+1)*6)
1875                                 throw con::InvalidIncomingDataException
1876                                         ("DELETEDBLOCKS length is too short");
1877                         v3s16 p = readV3S16(&data[2+1+i*6]);
1878                         /*infostream<<"Server: DELETEDBLOCKS ("
1879                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1880                         RemoteClient *client = getClient(peer_id);
1881                         client->SetBlockNotSent(p);
1882                 }
1883         }
1884         else if(command == TOSERVER_CLICK_OBJECT)
1885         {
1886                 infostream<<"Server: CLICK_OBJECT not supported anymore"<<std::endl;
1887                 return;
1888         }
1889         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
1890         {
1891                 infostream<<"Server: CLICK_ACTIVEOBJECT not supported anymore"<<std::endl;
1892                 return;
1893         }
1894         else if(command == TOSERVER_GROUND_ACTION)
1895         {
1896                 infostream<<"Server: GROUND_ACTION not supported anymore"<<std::endl;
1897                 return;
1898
1899         }
1900         else if(command == TOSERVER_RELEASE)
1901         {
1902                 infostream<<"Server: RELEASE not supported anymore"<<std::endl;
1903                 return;
1904         }
1905         else if(command == TOSERVER_SIGNTEXT)
1906         {
1907                 infostream<<"Server: SIGNTEXT not supported anymore"
1908                                 <<std::endl;
1909                 return;
1910         }
1911         else if(command == TOSERVER_SIGNNODETEXT)
1912         {
1913                 infostream<<"Server: SIGNNODETEXT not supported anymore"
1914                                 <<std::endl;
1915                 return;
1916         }
1917         else if(command == TOSERVER_INVENTORY_ACTION)
1918         {
1919                 // Strip command and create a stream
1920                 std::string datastring((char*)&data[2], datasize-2);
1921                 verbosestream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
1922                 std::istringstream is(datastring, std::ios_base::binary);
1923                 // Create an action
1924                 InventoryAction *a = InventoryAction::deSerialize(is);
1925                 if(a == NULL)
1926                 {
1927                         infostream<<"TOSERVER_INVENTORY_ACTION: "
1928                                         <<"InventoryAction::deSerialize() returned NULL"
1929                                         <<std::endl;
1930                         return;
1931                 }
1932
1933                 // If something goes wrong, this player is to blame
1934                 RollbackScopeActor rollback_scope(m_rollback,
1935                                 std::string("player:")+player->getName());
1936
1937                 /*
1938                         Note: Always set inventory not sent, to repair cases
1939                         where the client made a bad prediction.
1940                 */
1941
1942                 /*
1943                         Handle restrictions and special cases of the move action
1944                 */
1945                 if(a->getType() == IACTION_MOVE)
1946                 {
1947                         IMoveAction *ma = (IMoveAction*)a;
1948
1949                         ma->from_inv.applyCurrentPlayer(player->getName());
1950                         ma->to_inv.applyCurrentPlayer(player->getName());
1951
1952                         setInventoryModified(ma->from_inv);
1953                         setInventoryModified(ma->to_inv);
1954
1955                         bool from_inv_is_current_player =
1956                                 (ma->from_inv.type == InventoryLocation::PLAYER) &&
1957                                 (ma->from_inv.name == player->getName());
1958
1959                         bool to_inv_is_current_player =
1960                                 (ma->to_inv.type == InventoryLocation::PLAYER) &&
1961                                 (ma->to_inv.name == player->getName());
1962
1963                         /*
1964                                 Disable moving items out of craftpreview
1965                         */
1966                         if(ma->from_list == "craftpreview")
1967                         {
1968                                 infostream<<"Ignoring IMoveAction from "
1969                                                 <<(ma->from_inv.dump())<<":"<<ma->from_list
1970                                                 <<" to "<<(ma->to_inv.dump())<<":"<<ma->to_list
1971                                                 <<" because src is "<<ma->from_list<<std::endl;
1972                                 delete a;
1973                                 return;
1974                         }
1975
1976                         /*
1977                                 Disable moving items into craftresult and craftpreview
1978                         */
1979                         if(ma->to_list == "craftpreview" || ma->to_list == "craftresult")
1980                         {
1981                                 infostream<<"Ignoring IMoveAction from "
1982                                                 <<(ma->from_inv.dump())<<":"<<ma->from_list
1983                                                 <<" to "<<(ma->to_inv.dump())<<":"<<ma->to_list
1984                                                 <<" because dst is "<<ma->to_list<<std::endl;
1985                                 delete a;
1986                                 return;
1987                         }
1988
1989                         // Disallow moving items in elsewhere than player's inventory
1990                         // if not allowed to interact
1991                         if(!checkPriv(player->getName(), "interact") &&
1992                                         (!from_inv_is_current_player ||
1993                                         !to_inv_is_current_player))
1994                         {
1995                                 infostream<<"Cannot move outside of player's inventory: "
1996                                                 <<"No interact privilege"<<std::endl;
1997                                 delete a;
1998                                 return;
1999                         }
2000                 }
2001                 /*
2002                         Handle restrictions and special cases of the drop action
2003                 */
2004                 else if(a->getType() == IACTION_DROP)
2005                 {
2006                         IDropAction *da = (IDropAction*)a;
2007
2008                         da->from_inv.applyCurrentPlayer(player->getName());
2009
2010                         setInventoryModified(da->from_inv);
2011
2012                         /*
2013                                 Disable dropping items out of craftpreview
2014                         */
2015                         if(da->from_list == "craftpreview")
2016                         {
2017                                 infostream<<"Ignoring IDropAction from "
2018                                                 <<(da->from_inv.dump())<<":"<<da->from_list
2019                                                 <<" because src is "<<da->from_list<<std::endl;
2020                                 delete a;
2021                                 return;
2022                         }
2023
2024                         // Disallow dropping items if not allowed to interact
2025                         if(!checkPriv(player->getName(), "interact"))
2026                         {
2027                                 delete a;
2028                                 return;
2029                         }
2030                 }
2031                 /*
2032                         Handle restrictions and special cases of the craft action
2033                 */
2034                 else if(a->getType() == IACTION_CRAFT)
2035                 {
2036                         ICraftAction *ca = (ICraftAction*)a;
2037
2038                         ca->craft_inv.applyCurrentPlayer(player->getName());
2039
2040                         setInventoryModified(ca->craft_inv);
2041
2042                         //bool craft_inv_is_current_player =
2043                         //      (ca->craft_inv.type == InventoryLocation::PLAYER) &&
2044                         //      (ca->craft_inv.name == player->getName());
2045
2046                         // Disallow crafting if not allowed to interact
2047                         if(!checkPriv(player->getName(), "interact"))
2048                         {
2049                                 infostream<<"Cannot craft: "
2050                                                 <<"No interact privilege"<<std::endl;
2051                                 delete a;
2052                                 return;
2053                         }
2054                 }
2055
2056                 // Do the action
2057                 a->apply(this, playersao, this);
2058                 // Eat the action
2059                 delete a;
2060         }
2061         else if(command == TOSERVER_CHAT_MESSAGE)
2062         {
2063                 /*
2064                         u16 command
2065                         u16 length
2066                         wstring message
2067                 */
2068                 u8 buf[6];
2069                 std::string datastring((char*)&data[2], datasize-2);
2070                 std::istringstream is(datastring, std::ios_base::binary);
2071
2072                 // Read stuff
2073                 is.read((char*)buf, 2);
2074                 u16 len = readU16(buf);
2075
2076                 std::wstring message;
2077                 for(u16 i=0; i<len; i++)
2078                 {
2079                         is.read((char*)buf, 2);
2080                         message += (wchar_t)readU16(buf);
2081                 }
2082
2083                 // If something goes wrong, this player is to blame
2084                 RollbackScopeActor rollback_scope(m_rollback,
2085                                 std::string("player:")+player->getName());
2086
2087                 // Get player name of this client
2088                 std::wstring name = narrow_to_wide(player->getName());
2089
2090                 // Run script hook
2091                 bool ate = m_script->on_chat_message(player->getName(),
2092                                 wide_to_narrow(message));
2093                 // If script ate the message, don't proceed
2094                 if(ate)
2095                         return;
2096
2097                 // Line to send to players
2098                 std::wstring line;
2099                 // Whether to send to the player that sent the line
2100                 bool send_to_sender_only = false;
2101
2102                 // Commands are implemented in Lua, so only catch invalid
2103                 // commands that were not "eaten" and send an error back
2104                 if(message[0] == L'/')
2105                 {
2106                         message = message.substr(1);
2107                         send_to_sender_only = true;
2108                         if(message.length() == 0)
2109                                 line += L"-!- Empty command";
2110                         else
2111                                 line += L"-!- Invalid command: " + str_split(message, L' ')[0];
2112                 }
2113                 else
2114                 {
2115                         if(checkPriv(player->getName(), "shout")){
2116                                 line += L"<";
2117                                 line += name;
2118                                 line += L"> ";
2119                                 line += message;
2120                         } else {
2121                                 line += L"-!- You don't have permission to shout.";
2122                                 send_to_sender_only = true;
2123                         }
2124                 }
2125
2126                 if(line != L"")
2127                 {
2128                         /*
2129                                 Send the message to sender
2130                         */
2131                         if (send_to_sender_only)
2132                         {
2133                                 SendChatMessage(peer_id, line);
2134                         }
2135                         /*
2136                                 Send the message to others
2137                         */
2138                         else
2139                         {
2140                                 actionstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
2141
2142                                 std::list<u16> clients = m_clients.getClientIDs();
2143
2144                                 for(std::list<u16>::iterator
2145                                         i = clients.begin();
2146                                         i != clients.end(); ++i)
2147                                 {
2148                                         if (*i != peer_id)
2149                                                 SendChatMessage(*i, line);
2150                                 }
2151                         }
2152                 }
2153         }
2154         else if(command == TOSERVER_DAMAGE)
2155         {
2156                 std::string datastring((char*)&data[2], datasize-2);
2157                 std::istringstream is(datastring, std::ios_base::binary);
2158                 u8 damage = readU8(is);
2159
2160                 if(g_settings->getBool("enable_damage"))
2161                 {
2162                         actionstream<<player->getName()<<" damaged by "
2163                                         <<(int)damage<<" hp at "<<PP(player->getPosition()/BS)
2164                                         <<std::endl;
2165
2166                         playersao->setHP(playersao->getHP() - damage);
2167
2168                         if(playersao->getHP() == 0 && playersao->m_hp_not_sent)
2169                                 DiePlayer(peer_id);
2170
2171                         if(playersao->m_hp_not_sent)
2172                                 SendPlayerHP(peer_id);
2173                 }
2174         }
2175         else if(command == TOSERVER_BREATH)
2176         {
2177                 std::string datastring((char*)&data[2], datasize-2);
2178                 std::istringstream is(datastring, std::ios_base::binary);
2179                 u16 breath = readU16(is);
2180                 playersao->setBreath(breath);
2181                 m_script->player_event(playersao,"breath_changed");
2182         }
2183         else if(command == TOSERVER_PASSWORD)
2184         {
2185                 /*
2186                         [0] u16 TOSERVER_PASSWORD
2187                         [2] u8[28] old password
2188                         [30] u8[28] new password
2189                 */
2190
2191                 if(datasize != 2+PASSWORD_SIZE*2)
2192                         return;
2193                 /*char password[PASSWORD_SIZE];
2194                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2195                         password[i] = data[2+i];
2196                 password[PASSWORD_SIZE-1] = 0;*/
2197                 std::string oldpwd;
2198                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2199                 {
2200                         char c = data[2+i];
2201                         if(c == 0)
2202                                 break;
2203                         oldpwd += c;
2204                 }
2205                 std::string newpwd;
2206                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2207                 {
2208                         char c = data[2+PASSWORD_SIZE+i];
2209                         if(c == 0)
2210                                 break;
2211                         newpwd += c;
2212                 }
2213
2214                 if(!base64_is_valid(newpwd)){
2215                         infostream<<"Server: "<<player->getName()<<" supplied invalid password hash"<<std::endl;
2216                         // Wrong old password supplied!!
2217                         SendChatMessage(peer_id, L"Invalid new password hash supplied. Password NOT changed.");
2218                         return;
2219                 }
2220
2221                 infostream<<"Server: Client requests a password change from "
2222                                 <<"'"<<oldpwd<<"' to '"<<newpwd<<"'"<<std::endl;
2223
2224                 std::string playername = player->getName();
2225
2226                 std::string checkpwd;
2227                 m_script->getAuth(playername, &checkpwd, NULL);
2228
2229                 if(oldpwd != checkpwd)
2230                 {
2231                         infostream<<"Server: invalid old password"<<std::endl;
2232                         // Wrong old password supplied!!
2233                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
2234                         return;
2235                 }
2236
2237                 bool success = m_script->setPassword(playername, newpwd);
2238                 if(success){
2239                         actionstream<<player->getName()<<" changes password"<<std::endl;
2240                         SendChatMessage(peer_id, L"Password change successful.");
2241                 } else {
2242                         actionstream<<player->getName()<<" tries to change password but "
2243                                         <<"it fails"<<std::endl;
2244                         SendChatMessage(peer_id, L"Password change failed or inavailable.");
2245                 }
2246         }
2247         else if(command == TOSERVER_PLAYERITEM)
2248         {
2249                 if (datasize < 2+2)
2250                         return;
2251
2252                 u16 item = readU16(&data[2]);
2253                 playersao->setWieldIndex(item);
2254         }
2255         else if(command == TOSERVER_RESPAWN)
2256         {
2257                 if(player->hp != 0 || !g_settings->getBool("enable_damage"))
2258                         return;
2259
2260                 RespawnPlayer(peer_id);
2261
2262                 actionstream<<player->getName()<<" respawns at "
2263                                 <<PP(player->getPosition()/BS)<<std::endl;
2264
2265                 // ActiveObject is added to environment in AsyncRunStep after
2266                 // the previous addition has been succesfully removed
2267         }
2268         else if(command == TOSERVER_INTERACT)
2269         {
2270                 std::string datastring((char*)&data[2], datasize-2);
2271                 std::istringstream is(datastring, std::ios_base::binary);
2272
2273                 /*
2274                         [0] u16 command
2275                         [2] u8 action
2276                         [3] u16 item
2277                         [5] u32 length of the next item
2278                         [9] serialized PointedThing
2279                         actions:
2280                         0: start digging (from undersurface) or use
2281                         1: stop digging (all parameters ignored)
2282                         2: digging completed
2283                         3: place block or item (to abovesurface)
2284                         4: use item
2285                 */
2286                 u8 action = readU8(is);
2287                 u16 item_i = readU16(is);
2288                 std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
2289                 PointedThing pointed;
2290                 pointed.deSerialize(tmp_is);
2291
2292                 verbosestream<<"TOSERVER_INTERACT: action="<<(int)action<<", item="
2293                                 <<item_i<<", pointed="<<pointed.dump()<<std::endl;
2294
2295                 if(player->hp == 0)
2296                 {
2297                         verbosestream<<"TOSERVER_INTERACT: "<<player->getName()
2298                                 <<" tried to interact, but is dead!"<<std::endl;
2299                         return;
2300                 }
2301
2302                 v3f player_pos = playersao->getLastGoodPosition();
2303
2304                 // Update wielded item
2305                 playersao->setWieldIndex(item_i);
2306
2307                 // Get pointed to node (undefined if not POINTEDTYPE_NODE)
2308                 v3s16 p_under = pointed.node_undersurface;
2309                 v3s16 p_above = pointed.node_abovesurface;
2310
2311                 // Get pointed to object (NULL if not POINTEDTYPE_OBJECT)
2312                 ServerActiveObject *pointed_object = NULL;
2313                 if(pointed.type == POINTEDTHING_OBJECT)
2314                 {
2315                         pointed_object = m_env->getActiveObject(pointed.object_id);
2316                         if(pointed_object == NULL)
2317                         {
2318                                 verbosestream<<"TOSERVER_INTERACT: "
2319                                         "pointed object is NULL"<<std::endl;
2320                                 return;
2321                         }
2322
2323                 }
2324
2325                 v3f pointed_pos_under = player_pos;
2326                 v3f pointed_pos_above = player_pos;
2327                 if(pointed.type == POINTEDTHING_NODE)
2328                 {
2329                         pointed_pos_under = intToFloat(p_under, BS);
2330                         pointed_pos_above = intToFloat(p_above, BS);
2331                 }
2332                 else if(pointed.type == POINTEDTHING_OBJECT)
2333                 {
2334                         pointed_pos_under = pointed_object->getBasePosition();
2335                         pointed_pos_above = pointed_pos_under;
2336                 }
2337
2338                 /*
2339                         Check that target is reasonably close
2340                         (only when digging or placing things)
2341                 */
2342                 if(action == 0 || action == 2 || action == 3)
2343                 {
2344                         float d = player_pos.getDistanceFrom(pointed_pos_under);
2345                         float max_d = BS * 14; // Just some large enough value
2346                         if(d > max_d){
2347                                 actionstream<<"Player "<<player->getName()
2348                                                 <<" tried to access "<<pointed.dump()
2349                                                 <<" from too far: "
2350                                                 <<"d="<<d<<", max_d="<<max_d
2351                                                 <<". ignoring."<<std::endl;
2352                                 // Re-send block to revert change on client-side
2353                                 RemoteClient *client = getClient(peer_id);
2354                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2355                                 client->SetBlockNotSent(blockpos);
2356                                 // Call callbacks
2357                                 m_script->on_cheat(playersao, "interacted_too_far");
2358                                 // Do nothing else
2359                                 return;
2360                         }
2361                 }
2362
2363                 /*
2364                         Make sure the player is allowed to do it
2365                 */
2366                 if(!checkPriv(player->getName(), "interact"))
2367                 {
2368                         actionstream<<player->getName()<<" attempted to interact with "
2369                                         <<pointed.dump()<<" without 'interact' privilege"
2370                                         <<std::endl;
2371                         // Re-send block to revert change on client-side
2372                         RemoteClient *client = getClient(peer_id);
2373                         // Digging completed -> under
2374                         if(action == 2){
2375                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2376                                 client->SetBlockNotSent(blockpos);
2377                         }
2378                         // Placement -> above
2379                         if(action == 3){
2380                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
2381                                 client->SetBlockNotSent(blockpos);
2382                         }
2383                         return;
2384                 }
2385
2386                 /*
2387                         If something goes wrong, this player is to blame
2388                 */
2389                 RollbackScopeActor rollback_scope(m_rollback,
2390                                 std::string("player:")+player->getName());
2391
2392                 /*
2393                         0: start digging or punch object
2394                 */
2395                 if(action == 0)
2396                 {
2397                         if(pointed.type == POINTEDTHING_NODE)
2398                         {
2399                                 /*
2400                                         NOTE: This can be used in the future to check if
2401                                         somebody is cheating, by checking the timing.
2402                                 */
2403                                 MapNode n(CONTENT_IGNORE);
2404                                 try
2405                                 {
2406                                         n = m_env->getMap().getNode(p_under);
2407                                 }
2408                                 catch(InvalidPositionException &e)
2409                                 {
2410                                         infostream<<"Server: Not punching: Node not found."
2411                                                         <<" Adding block to emerge queue."
2412                                                         <<std::endl;
2413                                         m_emerge->enqueueBlockEmerge(peer_id, getNodeBlockPos(p_above), false);
2414                                 }
2415                                 if(n.getContent() != CONTENT_IGNORE)
2416                                         m_script->node_on_punch(p_under, n, playersao, pointed);
2417                                 // Cheat prevention
2418                                 playersao->noCheatDigStart(p_under);
2419                         }
2420                         else if(pointed.type == POINTEDTHING_OBJECT)
2421                         {
2422                                 // Skip if object has been removed
2423                                 if(pointed_object->m_removed)
2424                                         return;
2425
2426                                 actionstream<<player->getName()<<" punches object "
2427                                                 <<pointed.object_id<<": "
2428                                                 <<pointed_object->getDescription()<<std::endl;
2429
2430                                 ItemStack punchitem = playersao->getWieldedItem();
2431                                 ToolCapabilities toolcap =
2432                                                 punchitem.getToolCapabilities(m_itemdef);
2433                                 v3f dir = (pointed_object->getBasePosition() -
2434                                                 (player->getPosition() + player->getEyeOffset())
2435                                                         ).normalize();
2436                                 float time_from_last_punch =
2437                                         playersao->resetTimeFromLastPunch();
2438                                 pointed_object->punch(dir, &toolcap, playersao,
2439                                                 time_from_last_punch);
2440                         }
2441
2442                 } // action == 0
2443
2444                 /*
2445                         1: stop digging
2446                 */
2447                 else if(action == 1)
2448                 {
2449                 } // action == 1
2450
2451                 /*
2452                         2: Digging completed
2453                 */
2454                 else if(action == 2)
2455                 {
2456                         // Only digging of nodes
2457                         if(pointed.type == POINTEDTHING_NODE)
2458                         {
2459                                 MapNode n(CONTENT_IGNORE);
2460                                 try
2461                                 {
2462                                         n = m_env->getMap().getNode(p_under);
2463                                 }
2464                                 catch(InvalidPositionException &e)
2465                                 {
2466                                         infostream<<"Server: Not finishing digging: Node not found."
2467                                                         <<" Adding block to emerge queue."
2468                                                         <<std::endl;
2469                                         m_emerge->enqueueBlockEmerge(peer_id, getNodeBlockPos(p_above), false);
2470                                 }
2471
2472                                 /* Cheat prevention */
2473                                 bool is_valid_dig = true;
2474                                 if(!isSingleplayer() && !g_settings->getBool("disable_anticheat"))
2475                                 {
2476                                         v3s16 nocheat_p = playersao->getNoCheatDigPos();
2477                                         float nocheat_t = playersao->getNoCheatDigTime();
2478                                         playersao->noCheatDigEnd();
2479                                         // If player didn't start digging this, ignore dig
2480                                         if(nocheat_p != p_under){
2481                                                 infostream<<"Server: NoCheat: "<<player->getName()
2482                                                                 <<" started digging "
2483                                                                 <<PP(nocheat_p)<<" and completed digging "
2484                                                                 <<PP(p_under)<<"; not digging."<<std::endl;
2485                                                 is_valid_dig = false;
2486                                                 // Call callbacks
2487                                                 m_script->on_cheat(playersao, "finished_unknown_dig");
2488                                         }
2489                                         // Get player's wielded item
2490                                         ItemStack playeritem;
2491                                         InventoryList *mlist = playersao->getInventory()->getList("main");
2492                                         if(mlist != NULL)
2493                                                 playeritem = mlist->getItem(playersao->getWieldIndex());
2494                                         ToolCapabilities playeritem_toolcap =
2495                                                         playeritem.getToolCapabilities(m_itemdef);
2496                                         // Get diggability and expected digging time
2497                                         DigParams params = getDigParams(m_nodedef->get(n).groups,
2498                                                         &playeritem_toolcap);
2499                                         // If can't dig, try hand
2500                                         if(!params.diggable){
2501                                                 const ItemDefinition &hand = m_itemdef->get("");
2502                                                 const ToolCapabilities *tp = hand.tool_capabilities;
2503                                                 if(tp)
2504                                                         params = getDigParams(m_nodedef->get(n).groups, tp);
2505                                         }
2506                                         // If can't dig, ignore dig
2507                                         if(!params.diggable){
2508                                                 infostream<<"Server: NoCheat: "<<player->getName()
2509                                                                 <<" completed digging "<<PP(p_under)
2510                                                                 <<", which is not diggable with tool. not digging."
2511                                                                 <<std::endl;
2512                                                 is_valid_dig = false;
2513                                                 // Call callbacks
2514                                                 m_script->on_cheat(playersao, "dug_unbreakable");
2515                                         }
2516                                         // Check digging time
2517                                         // If already invalidated, we don't have to
2518                                         if(!is_valid_dig){
2519                                                 // Well not our problem then
2520                                         }
2521                                         // Clean and long dig
2522                                         else if(params.time > 2.0 && nocheat_t * 1.2 > params.time){
2523                                                 // All is good, but grab time from pool; don't care if
2524                                                 // it's actually available
2525                                                 playersao->getDigPool().grab(params.time);
2526                                         }
2527                                         // Short or laggy dig
2528                                         // Try getting the time from pool
2529                                         else if(playersao->getDigPool().grab(params.time)){
2530                                                 // All is good
2531                                         }
2532                                         // Dig not possible
2533                                         else{
2534                                                 infostream<<"Server: NoCheat: "<<player->getName()
2535                                                                 <<" completed digging "<<PP(p_under)
2536                                                                 <<"too fast; not digging."<<std::endl;
2537                                                 is_valid_dig = false;
2538                                                 // Call callbacks
2539                                                 m_script->on_cheat(playersao, "dug_too_fast");
2540                                         }
2541                                 }
2542
2543                                 /* Actually dig node */
2544
2545                                 if(is_valid_dig && n.getContent() != CONTENT_IGNORE)
2546                                         m_script->node_on_dig(p_under, n, playersao);
2547
2548                                 // Send unusual result (that is, node not being removed)
2549                                 if(m_env->getMap().getNodeNoEx(p_under).getContent() != CONTENT_AIR)
2550                                 {
2551                                         // Re-send block to revert change on client-side
2552                                         RemoteClient *client = getClient(peer_id);
2553                                         v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2554                                         client->SetBlockNotSent(blockpos);
2555                                 }
2556                         }
2557                 } // action == 2
2558
2559                 /*
2560                         3: place block or right-click object
2561                 */
2562                 else if(action == 3)
2563                 {
2564                         ItemStack item = playersao->getWieldedItem();
2565
2566                         // Reset build time counter
2567                         if(pointed.type == POINTEDTHING_NODE &&
2568                                         item.getDefinition(m_itemdef).type == ITEM_NODE)
2569                                 getClient(peer_id)->m_time_from_building = 0.0;
2570
2571                         if(pointed.type == POINTEDTHING_OBJECT)
2572                         {
2573                                 // Right click object
2574
2575                                 // Skip if object has been removed
2576                                 if(pointed_object->m_removed)
2577                                         return;
2578
2579                                 actionstream<<player->getName()<<" right-clicks object "
2580                                                 <<pointed.object_id<<": "
2581                                                 <<pointed_object->getDescription()<<std::endl;
2582
2583                                 // Do stuff
2584                                 pointed_object->rightClick(playersao);
2585                         }
2586                         else if(m_script->item_OnPlace(
2587                                         item, playersao, pointed))
2588                         {
2589                                 // Placement was handled in lua
2590
2591                                 // Apply returned ItemStack
2592                                 playersao->setWieldedItem(item);
2593                         }
2594
2595                         // If item has node placement prediction, always send the
2596                         // blocks to make sure the client knows what exactly happened
2597                         if(item.getDefinition(m_itemdef).node_placement_prediction != ""){
2598                                 RemoteClient *client = getClient(peer_id);
2599                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
2600                                 client->SetBlockNotSent(blockpos);
2601                                 v3s16 blockpos2 = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2602                                 if(blockpos2 != blockpos){
2603                                         client->SetBlockNotSent(blockpos2);
2604                                 }
2605                         }
2606                 } // action == 3
2607
2608                 /*
2609                         4: use
2610                 */
2611                 else if(action == 4)
2612                 {
2613                         ItemStack item = playersao->getWieldedItem();
2614
2615                         actionstream<<player->getName()<<" uses "<<item.name
2616                                         <<", pointing at "<<pointed.dump()<<std::endl;
2617
2618                         if(m_script->item_OnUse(
2619                                         item, playersao, pointed))
2620                         {
2621                                 // Apply returned ItemStack
2622                                 playersao->setWieldedItem(item);
2623                         }
2624
2625                 } // action == 4
2626
2627
2628                 /*
2629                         Catch invalid actions
2630                 */
2631                 else
2632                 {
2633                         infostream<<"WARNING: Server: Invalid action "
2634                                         <<action<<std::endl;
2635                 }
2636         }
2637         else if(command == TOSERVER_REMOVED_SOUNDS)
2638         {
2639                 std::string datastring((char*)&data[2], datasize-2);
2640                 std::istringstream is(datastring, std::ios_base::binary);
2641
2642                 int num = readU16(is);
2643                 for(int k=0; k<num; k++){
2644                         s32 id = readS32(is);
2645                         std::map<s32, ServerPlayingSound>::iterator i =
2646                                         m_playing_sounds.find(id);
2647                         if(i == m_playing_sounds.end())
2648                                 continue;
2649                         ServerPlayingSound &psound = i->second;
2650                         psound.clients.erase(peer_id);
2651                         if(psound.clients.size() == 0)
2652                                 m_playing_sounds.erase(i++);
2653                 }
2654         }
2655         else if(command == TOSERVER_NODEMETA_FIELDS)
2656         {
2657                 std::string datastring((char*)&data[2], datasize-2);
2658                 std::istringstream is(datastring, std::ios_base::binary);
2659
2660                 v3s16 p = readV3S16(is);
2661                 std::string formname = deSerializeString(is);
2662                 int num = readU16(is);
2663                 std::map<std::string, std::string> fields;
2664                 for(int k=0; k<num; k++){
2665                         std::string fieldname = deSerializeString(is);
2666                         std::string fieldvalue = deSerializeLongString(is);
2667                         fields[fieldname] = fieldvalue;
2668                 }
2669
2670                 // If something goes wrong, this player is to blame
2671                 RollbackScopeActor rollback_scope(m_rollback,
2672                                 std::string("player:")+player->getName());
2673
2674                 // Check the target node for rollback data; leave others unnoticed
2675                 RollbackNode rn_old(&m_env->getMap(), p, this);
2676
2677                 m_script->node_on_receive_fields(p, formname, fields,playersao);
2678
2679                 // Report rollback data
2680                 RollbackNode rn_new(&m_env->getMap(), p, this);
2681                 if(rollback() && rn_new != rn_old){
2682                         RollbackAction action;
2683                         action.setSetNode(p, rn_old, rn_new);
2684                         rollback()->reportAction(action);
2685                 }
2686         }
2687         else if(command == TOSERVER_INVENTORY_FIELDS)
2688         {
2689                 std::string datastring((char*)&data[2], datasize-2);
2690                 std::istringstream is(datastring, std::ios_base::binary);
2691
2692                 std::string formname = deSerializeString(is);
2693                 int num = readU16(is);
2694                 std::map<std::string, std::string> fields;
2695                 for(int k=0; k<num; k++){
2696                         std::string fieldname = deSerializeString(is);
2697                         std::string fieldvalue = deSerializeLongString(is);
2698                         fields[fieldname] = fieldvalue;
2699                 }
2700
2701                 m_script->on_playerReceiveFields(playersao, formname, fields);
2702         }
2703         else
2704         {
2705                 infostream<<"Server::ProcessData(): Ignoring "
2706                                 "unknown command "<<command<<std::endl;
2707         }
2708
2709         } //try
2710         catch(SendFailedException &e)
2711         {
2712                 errorstream<<"Server::ProcessData(): SendFailedException: "
2713                                 <<"what="<<e.what()
2714                                 <<std::endl;
2715         }
2716 }
2717
2718 void Server::setTimeOfDay(u32 time)
2719 {
2720         m_env->setTimeOfDay(time);
2721         m_time_of_day_send_timer = 0;
2722 }
2723
2724 void Server::onMapEditEvent(MapEditEvent *event)
2725 {
2726         //infostream<<"Server::onMapEditEvent()"<<std::endl;
2727         if(m_ignore_map_edit_events)
2728                 return;
2729         if(m_ignore_map_edit_events_area.contains(event->getArea()))
2730                 return;
2731         MapEditEvent *e = event->clone();
2732         m_unsent_map_edit_queue.push_back(e);
2733 }
2734
2735 Inventory* Server::getInventory(const InventoryLocation &loc)
2736 {
2737         switch(loc.type){
2738         case InventoryLocation::UNDEFINED:
2739         {}
2740         break;
2741         case InventoryLocation::CURRENT_PLAYER:
2742         {}
2743         break;
2744         case InventoryLocation::PLAYER:
2745         {
2746                 Player *player = m_env->getPlayer(loc.name.c_str());
2747                 if(!player)
2748                         return NULL;
2749                 PlayerSAO *playersao = player->getPlayerSAO();
2750                 if(!playersao)
2751                         return NULL;
2752                 return playersao->getInventory();
2753         }
2754         break;
2755         case InventoryLocation::NODEMETA:
2756         {
2757                 NodeMetadata *meta = m_env->getMap().getNodeMetadata(loc.p);
2758                 if(!meta)
2759                         return NULL;
2760                 return meta->getInventory();
2761         }
2762         break;
2763         case InventoryLocation::DETACHED:
2764         {
2765                 if(m_detached_inventories.count(loc.name) == 0)
2766                         return NULL;
2767                 return m_detached_inventories[loc.name];
2768         }
2769         break;
2770         default:
2771                 assert(0);
2772         }
2773         return NULL;
2774 }
2775 void Server::setInventoryModified(const InventoryLocation &loc)
2776 {
2777         switch(loc.type){
2778         case InventoryLocation::UNDEFINED:
2779         {}
2780         break;
2781         case InventoryLocation::PLAYER:
2782         {
2783                 Player *player = m_env->getPlayer(loc.name.c_str());
2784                 if(!player)
2785                         return;
2786                 PlayerSAO *playersao = player->getPlayerSAO();
2787                 if(!playersao)
2788                         return;
2789                 playersao->m_inventory_not_sent = true;
2790                 playersao->m_wielded_item_not_sent = true;
2791         }
2792         break;
2793         case InventoryLocation::NODEMETA:
2794         {
2795                 v3s16 blockpos = getNodeBlockPos(loc.p);
2796
2797                 MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(blockpos);
2798                 if(block)
2799                         block->raiseModified(MOD_STATE_WRITE_NEEDED);
2800
2801                 setBlockNotSent(blockpos);
2802         }
2803         break;
2804         case InventoryLocation::DETACHED:
2805         {
2806                 sendDetachedInventory(loc.name,PEER_ID_INEXISTENT);
2807         }
2808         break;
2809         default:
2810                 assert(0);
2811         }
2812 }
2813
2814 void Server::SetBlocksNotSent(std::map<v3s16, MapBlock *>& block)
2815 {
2816         std::list<u16> clients = m_clients.getClientIDs();
2817         m_clients.Lock();
2818         // Set the modified blocks unsent for all the clients
2819         for (std::list<u16>::iterator
2820                  i = clients.begin();
2821                  i != clients.end(); ++i) {
2822                         RemoteClient *client = m_clients.lockedGetClientNoEx(*i);
2823                         if (client != NULL)
2824                                 client->SetBlocksNotSent(block);
2825                 }
2826         m_clients.Unlock();
2827 }
2828
2829 void Server::peerAdded(con::Peer *peer)
2830 {
2831         DSTACK(__FUNCTION_NAME);
2832         verbosestream<<"Server::peerAdded(): peer->id="
2833                         <<peer->id<<std::endl;
2834
2835         con::PeerChange c;
2836         c.type = con::PEER_ADDED;
2837         c.peer_id = peer->id;
2838         c.timeout = false;
2839         m_peer_change_queue.push_back(c);
2840 }
2841
2842 void Server::deletingPeer(con::Peer *peer, bool timeout)
2843 {
2844         DSTACK(__FUNCTION_NAME);
2845         verbosestream<<"Server::deletingPeer(): peer->id="
2846                         <<peer->id<<", timeout="<<timeout<<std::endl;
2847
2848         m_clients.event(peer->id, CSE_Disconnect);
2849         con::PeerChange c;
2850         c.type = con::PEER_REMOVED;
2851         c.peer_id = peer->id;
2852         c.timeout = timeout;
2853         m_peer_change_queue.push_back(c);
2854 }
2855
2856 bool Server::getClientConInfo(u16 peer_id, con::rtt_stat_type type, float* retval)
2857 {
2858         *retval = m_con.getPeerStat(peer_id,type);
2859         if (*retval == -1) return false;
2860         return true;
2861 }
2862
2863 bool Server::getClientInfo(
2864                 u16          peer_id,
2865                 ClientState* state,
2866                 u32*         uptime,
2867                 u8*          ser_vers,
2868                 u16*         prot_vers,
2869                 u8*          major,
2870                 u8*          minor,
2871                 u8*          patch,
2872                 std::string* vers_string
2873         )
2874 {
2875         *state = m_clients.getClientState(peer_id);
2876         m_clients.Lock();
2877         RemoteClient* client = m_clients.lockedGetClientNoEx(peer_id, CS_Invalid);
2878
2879         if (client == NULL) {
2880                 m_clients.Unlock();
2881                 return false;
2882         }
2883
2884         *uptime = client->uptime();
2885         *ser_vers = client->serialization_version;
2886         *prot_vers = client->net_proto_version;
2887
2888         *major = client->getMajor();
2889         *minor = client->getMinor();
2890         *patch = client->getPatch();
2891         *vers_string = client->getPatch();
2892
2893         m_clients.Unlock();
2894
2895         return true;
2896 }
2897
2898 void Server::handlePeerChanges()
2899 {
2900         while(m_peer_change_queue.size() > 0)
2901         {
2902                 con::PeerChange c = m_peer_change_queue.pop_front();
2903
2904                 verbosestream<<"Server: Handling peer change: "
2905                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
2906                                 <<std::endl;
2907
2908                 switch(c.type)
2909                 {
2910                 case con::PEER_ADDED:
2911                         m_clients.CreateClient(c.peer_id);
2912                         break;
2913
2914                 case con::PEER_REMOVED:
2915                         DeleteClient(c.peer_id, c.timeout?CDR_TIMEOUT:CDR_LEAVE);
2916                         break;
2917
2918                 default:
2919                         assert("Invalid peer change event received!" == 0);
2920                         break;
2921                 }
2922         }
2923 }
2924
2925 void Server::SendMovement(u16 peer_id)
2926 {
2927         DSTACK(__FUNCTION_NAME);
2928         std::ostringstream os(std::ios_base::binary);
2929
2930         writeU16(os, TOCLIENT_MOVEMENT);
2931         writeF1000(os, g_settings->getFloat("movement_acceleration_default"));
2932         writeF1000(os, g_settings->getFloat("movement_acceleration_air"));
2933         writeF1000(os, g_settings->getFloat("movement_acceleration_fast"));
2934         writeF1000(os, g_settings->getFloat("movement_speed_walk"));
2935         writeF1000(os, g_settings->getFloat("movement_speed_crouch"));
2936         writeF1000(os, g_settings->getFloat("movement_speed_fast"));
2937         writeF1000(os, g_settings->getFloat("movement_speed_climb"));
2938         writeF1000(os, g_settings->getFloat("movement_speed_jump"));
2939         writeF1000(os, g_settings->getFloat("movement_liquid_fluidity"));
2940         writeF1000(os, g_settings->getFloat("movement_liquid_fluidity_smooth"));
2941         writeF1000(os, g_settings->getFloat("movement_liquid_sink"));
2942         writeF1000(os, g_settings->getFloat("movement_gravity"));
2943
2944         // Make data buffer
2945         std::string s = os.str();
2946         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2947         // Send as reliable
2948         m_clients.send(peer_id, 0, data, true);
2949 }
2950
2951 void Server::SendHP(u16 peer_id, u8 hp)
2952 {
2953         DSTACK(__FUNCTION_NAME);
2954         std::ostringstream os(std::ios_base::binary);
2955
2956         writeU16(os, TOCLIENT_HP);
2957         writeU8(os, hp);
2958
2959         // Make data buffer
2960         std::string s = os.str();
2961         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2962         // Send as reliable
2963         m_clients.send(peer_id, 0, data, true);
2964 }
2965
2966 void Server::SendBreath(u16 peer_id, u16 breath)
2967 {
2968         DSTACK(__FUNCTION_NAME);
2969         std::ostringstream os(std::ios_base::binary);
2970
2971         writeU16(os, TOCLIENT_BREATH);
2972         writeU16(os, breath);
2973
2974         // Make data buffer
2975         std::string s = os.str();
2976         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2977         // Send as reliable
2978         m_clients.send(peer_id, 0, data, true);
2979 }
2980
2981 void Server::SendAccessDenied(u16 peer_id,const std::wstring &reason)
2982 {
2983         DSTACK(__FUNCTION_NAME);
2984         std::ostringstream os(std::ios_base::binary);
2985
2986         writeU16(os, TOCLIENT_ACCESS_DENIED);
2987         os<<serializeWideString(reason);
2988
2989         // Make data buffer
2990         std::string s = os.str();
2991         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2992         // Send as reliable
2993         m_clients.send(peer_id, 0, data, true);
2994 }
2995
2996 void Server::SendDeathscreen(u16 peer_id,bool set_camera_point_target,
2997                 v3f camera_point_target)
2998 {
2999         DSTACK(__FUNCTION_NAME);
3000         std::ostringstream os(std::ios_base::binary);
3001
3002         writeU16(os, TOCLIENT_DEATHSCREEN);
3003         writeU8(os, set_camera_point_target);
3004         writeV3F1000(os, camera_point_target);
3005
3006         // Make data buffer
3007         std::string s = os.str();
3008         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3009         // Send as reliable
3010         m_clients.send(peer_id, 0, data, true);
3011 }
3012
3013 void Server::SendItemDef(u16 peer_id,
3014                 IItemDefManager *itemdef, u16 protocol_version)
3015 {
3016         DSTACK(__FUNCTION_NAME);
3017         std::ostringstream os(std::ios_base::binary);
3018
3019         /*
3020                 u16 command
3021                 u32 length of the next item
3022                 zlib-compressed serialized ItemDefManager
3023         */
3024         writeU16(os, TOCLIENT_ITEMDEF);
3025         std::ostringstream tmp_os(std::ios::binary);
3026         itemdef->serialize(tmp_os, protocol_version);
3027         std::ostringstream tmp_os2(std::ios::binary);
3028         compressZlib(tmp_os.str(), tmp_os2);
3029         os<<serializeLongString(tmp_os2.str());
3030
3031         // Make data buffer
3032         std::string s = os.str();
3033         verbosestream<<"Server: Sending item definitions to id("<<peer_id
3034                         <<"): size="<<s.size()<<std::endl;
3035         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3036         // Send as reliable
3037         m_clients.send(peer_id, 0, data, true);
3038 }
3039
3040 void Server::SendNodeDef(u16 peer_id,
3041                 INodeDefManager *nodedef, u16 protocol_version)
3042 {
3043         DSTACK(__FUNCTION_NAME);
3044         std::ostringstream os(std::ios_base::binary);
3045
3046         /*
3047                 u16 command
3048                 u32 length of the next item
3049                 zlib-compressed serialized NodeDefManager
3050         */
3051         writeU16(os, TOCLIENT_NODEDEF);
3052         std::ostringstream tmp_os(std::ios::binary);
3053         nodedef->serialize(tmp_os, protocol_version);
3054         std::ostringstream tmp_os2(std::ios::binary);
3055         compressZlib(tmp_os.str(), tmp_os2);
3056         os<<serializeLongString(tmp_os2.str());
3057
3058         // Make data buffer
3059         std::string s = os.str();
3060         verbosestream<<"Server: Sending node definitions to id("<<peer_id
3061                         <<"): size="<<s.size()<<std::endl;
3062         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3063         // Send as reliable
3064         m_clients.send(peer_id, 0, data, true);
3065 }
3066
3067 /*
3068         Non-static send methods
3069 */
3070
3071 void Server::SendInventory(u16 peer_id)
3072 {
3073         DSTACK(__FUNCTION_NAME);
3074
3075         PlayerSAO *playersao = getPlayerSAO(peer_id);
3076         assert(playersao);
3077
3078         playersao->m_inventory_not_sent = false;
3079
3080         /*
3081                 Serialize it
3082         */
3083
3084         std::ostringstream os;
3085         playersao->getInventory()->serialize(os);
3086
3087         std::string s = os.str();
3088
3089         SharedBuffer<u8> data(s.size()+2);
3090         writeU16(&data[0], TOCLIENT_INVENTORY);
3091         memcpy(&data[2], s.c_str(), s.size());
3092
3093         // Send as reliable
3094         m_clients.send(peer_id, 0, data, true);
3095 }
3096
3097 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3098 {
3099         DSTACK(__FUNCTION_NAME);
3100
3101         std::ostringstream os(std::ios_base::binary);
3102         u8 buf[12];
3103
3104         // Write command
3105         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3106         os.write((char*)buf, 2);
3107
3108         // Write length
3109         writeU16(buf, message.size());
3110         os.write((char*)buf, 2);
3111
3112         // Write string
3113         for(u32 i=0; i<message.size(); i++)
3114         {
3115                 u16 w = message[i];
3116                 writeU16(buf, w);
3117                 os.write((char*)buf, 2);
3118         }
3119
3120         // Make data buffer
3121         std::string s = os.str();
3122         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3123
3124         if (peer_id != PEER_ID_INEXISTENT)
3125         {
3126                 // Send as reliable
3127                 m_clients.send(peer_id, 0, data, true);
3128         }
3129         else
3130         {
3131                 m_clients.sendToAll(0,data,true);
3132         }
3133 }
3134
3135 void Server::SendShowFormspecMessage(u16 peer_id, const std::string &formspec,
3136                                      const std::string &formname)
3137 {
3138         DSTACK(__FUNCTION_NAME);
3139
3140         std::ostringstream os(std::ios_base::binary);
3141         u8 buf[12];
3142
3143
3144         // Write command
3145         writeU16(buf, TOCLIENT_SHOW_FORMSPEC);
3146         os.write((char*)buf, 2);
3147         os<<serializeLongString(FORMSPEC_VERSION_STRING + formspec);
3148         os<<serializeString(formname);
3149
3150         // Make data buffer
3151         std::string s = os.str();
3152         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3153         // Send as reliable
3154         m_clients.send(peer_id, 0, data, true);
3155 }
3156
3157 // Spawns a particle on peer with peer_id
3158 void Server::SendSpawnParticle(u16 peer_id, v3f pos, v3f velocity, v3f acceleration,
3159                                 float expirationtime, float size, bool collisiondetection,
3160                                 bool vertical, std::string texture)
3161 {
3162         DSTACK(__FUNCTION_NAME);
3163
3164         std::ostringstream os(std::ios_base::binary);
3165         writeU16(os, TOCLIENT_SPAWN_PARTICLE);
3166         writeV3F1000(os, pos);
3167         writeV3F1000(os, velocity);
3168         writeV3F1000(os, acceleration);
3169         writeF1000(os, expirationtime);
3170         writeF1000(os, size);
3171         writeU8(os,  collisiondetection);
3172         os<<serializeLongString(texture);
3173         writeU8(os, vertical);
3174
3175         // Make data buffer
3176         std::string s = os.str();
3177         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3178
3179         if (peer_id != PEER_ID_INEXISTENT)
3180         {
3181         // Send as reliable
3182                 m_clients.send(peer_id, 0, data, true);
3183         }
3184         else
3185         {
3186                 m_clients.sendToAll(0,data,true);
3187         }
3188 }
3189
3190 // Adds a ParticleSpawner on peer with peer_id
3191 void Server::SendAddParticleSpawner(u16 peer_id, u16 amount, float spawntime, v3f minpos, v3f maxpos,
3192         v3f minvel, v3f maxvel, v3f minacc, v3f maxacc, float minexptime, float maxexptime,
3193         float minsize, float maxsize, bool collisiondetection, bool vertical, std::string texture, u32 id)
3194 {
3195         DSTACK(__FUNCTION_NAME);
3196
3197         std::ostringstream os(std::ios_base::binary);
3198         writeU16(os, TOCLIENT_ADD_PARTICLESPAWNER);
3199
3200         writeU16(os, amount);
3201         writeF1000(os, spawntime);
3202         writeV3F1000(os, minpos);
3203         writeV3F1000(os, maxpos);
3204         writeV3F1000(os, minvel);
3205         writeV3F1000(os, maxvel);
3206         writeV3F1000(os, minacc);
3207         writeV3F1000(os, maxacc);
3208         writeF1000(os, minexptime);
3209         writeF1000(os, maxexptime);
3210         writeF1000(os, minsize);
3211         writeF1000(os, maxsize);
3212         writeU8(os,  collisiondetection);
3213         os<<serializeLongString(texture);
3214         writeU32(os, id);
3215         writeU8(os, vertical);
3216
3217         // Make data buffer
3218         std::string s = os.str();
3219         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3220
3221         if (peer_id != PEER_ID_INEXISTENT)
3222         {
3223                 // Send as reliable
3224                 m_clients.send(peer_id, 0, data, true);
3225         }
3226         else {
3227                 m_clients.sendToAll(0,data,true);
3228         }
3229 }
3230
3231 void Server::SendDeleteParticleSpawner(u16 peer_id, u32 id)
3232 {
3233         DSTACK(__FUNCTION_NAME);
3234
3235         std::ostringstream os(std::ios_base::binary);
3236         writeU16(os, TOCLIENT_DELETE_PARTICLESPAWNER);
3237
3238         writeU16(os, id);
3239
3240         // Make data buffer
3241         std::string s = os.str();
3242         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3243
3244         if (peer_id != PEER_ID_INEXISTENT) {
3245                 // Send as reliable
3246                 m_clients.send(peer_id, 0, data, true);
3247         }
3248         else {
3249                 m_clients.sendToAll(0,data,true);
3250         }
3251
3252 }
3253
3254 void Server::SendHUDAdd(u16 peer_id, u32 id, HudElement *form)
3255 {
3256         std::ostringstream os(std::ios_base::binary);
3257
3258         // Write command
3259         writeU16(os, TOCLIENT_HUDADD);
3260         writeU32(os, id);
3261         writeU8(os, (u8)form->type);
3262         writeV2F1000(os, form->pos);
3263         os << serializeString(form->name);
3264         writeV2F1000(os, form->scale);
3265         os << serializeString(form->text);
3266         writeU32(os, form->number);
3267         writeU32(os, form->item);
3268         writeU32(os, form->dir);
3269         writeV2F1000(os, form->align);
3270         writeV2F1000(os, form->offset);
3271         writeV3F1000(os, form->world_pos);
3272         writeV2S32(os,form->size);
3273
3274         // Make data buffer
3275         std::string s = os.str();
3276         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3277         // Send as reliable
3278         m_clients.send(peer_id, 1, data, true);
3279 }
3280
3281 void Server::SendHUDRemove(u16 peer_id, u32 id)
3282 {
3283         std::ostringstream os(std::ios_base::binary);
3284
3285         // Write command
3286         writeU16(os, TOCLIENT_HUDRM);
3287         writeU32(os, id);
3288
3289         // Make data buffer
3290         std::string s = os.str();
3291         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3292         // Send as reliable
3293
3294         m_clients.send(peer_id, 1, data, true);
3295 }
3296
3297 void Server::SendHUDChange(u16 peer_id, u32 id, HudElementStat stat, void *value)
3298 {
3299         std::ostringstream os(std::ios_base::binary);
3300
3301         // Write command
3302         writeU16(os, TOCLIENT_HUDCHANGE);
3303         writeU32(os, id);
3304         writeU8(os, (u8)stat);
3305         switch (stat) {
3306                 case HUD_STAT_POS:
3307                 case HUD_STAT_SCALE:
3308                 case HUD_STAT_ALIGN:
3309                 case HUD_STAT_OFFSET:
3310                         writeV2F1000(os, *(v2f *)value);
3311                         break;
3312                 case HUD_STAT_NAME:
3313                 case HUD_STAT_TEXT:
3314                         os << serializeString(*(std::string *)value);
3315                         break;
3316                 case HUD_STAT_WORLD_POS:
3317                         writeV3F1000(os, *(v3f *)value);
3318                         break;
3319                 case HUD_STAT_SIZE:
3320                         writeV2S32(os,*(v2s32 *)value);
3321                         break;
3322                 case HUD_STAT_NUMBER:
3323                 case HUD_STAT_ITEM:
3324                 case HUD_STAT_DIR:
3325                 default:
3326                         writeU32(os, *(u32 *)value);
3327                         break;
3328         }
3329
3330         // Make data buffer
3331         std::string s = os.str();
3332         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3333         // Send as reliable
3334         m_clients.send(peer_id, 0, data, true);
3335 }
3336
3337 void Server::SendHUDSetFlags(u16 peer_id, u32 flags, u32 mask)
3338 {
3339         std::ostringstream os(std::ios_base::binary);
3340
3341         // Write command
3342         writeU16(os, TOCLIENT_HUD_SET_FLAGS);
3343
3344         //////////////////////////// compatibility code to be removed //////////////
3345         flags &= ~(HUD_FLAG_HEALTHBAR_VISIBLE | HUD_FLAG_BREATHBAR_VISIBLE);
3346         ////////////////////////////////////////////////////////////////////////////
3347         writeU32(os, flags);
3348         writeU32(os, mask);
3349
3350         // Make data buffer
3351         std::string s = os.str();
3352         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3353         // Send as reliable
3354         m_clients.send(peer_id, 0, data, true);
3355 }
3356
3357 void Server::SendHUDSetParam(u16 peer_id, u16 param, const std::string &value)
3358 {
3359         std::ostringstream os(std::ios_base::binary);
3360
3361         // Write command
3362         writeU16(os, TOCLIENT_HUD_SET_PARAM);
3363         writeU16(os, param);
3364         os<<serializeString(value);
3365
3366         // Make data buffer
3367         std::string s = os.str();
3368         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3369         // Send as reliable
3370         m_clients.send(peer_id, 0, data, true);
3371 }
3372
3373 void Server::SendSetSky(u16 peer_id, const video::SColor &bgcolor,
3374                 const std::string &type, const std::vector<std::string> &params)
3375 {
3376         std::ostringstream os(std::ios_base::binary);
3377
3378         // Write command
3379         writeU16(os, TOCLIENT_SET_SKY);
3380         writeARGB8(os, bgcolor);
3381         os<<serializeString(type);
3382         writeU16(os, params.size());
3383         for(size_t i=0; i<params.size(); i++)
3384                 os<<serializeString(params[i]);
3385
3386         // Make data buffer
3387         std::string s = os.str();
3388         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3389         // Send as reliable
3390         m_clients.send(peer_id, 0, data, true);
3391 }
3392
3393 void Server::SendOverrideDayNightRatio(u16 peer_id, bool do_override,
3394                 float ratio)
3395 {
3396         std::ostringstream os(std::ios_base::binary);
3397
3398         // Write command
3399         writeU16(os, TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO);
3400         writeU8(os, do_override);
3401         writeU16(os, ratio*65535);
3402
3403         // Make data buffer
3404         std::string s = os.str();
3405         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3406         // Send as reliable
3407         m_clients.send(peer_id, 0, data, true);
3408 }
3409
3410 void Server::SendTimeOfDay(u16 peer_id, u16 time, f32 time_speed)
3411 {
3412         DSTACK(__FUNCTION_NAME);
3413
3414         // Make packet
3415         SharedBuffer<u8> data(2+2+4);
3416         writeU16(&data[0], TOCLIENT_TIME_OF_DAY);
3417         writeU16(&data[2], time);
3418         writeF1000(&data[4], time_speed);
3419
3420         if (peer_id == PEER_ID_INEXISTENT) {
3421                 m_clients.sendToAll(0,data,true);
3422         }
3423         else {
3424                 // Send as reliable
3425                 m_clients.send(peer_id, 0, data, true);
3426         }
3427 }
3428
3429 void Server::SendPlayerHP(u16 peer_id)
3430 {
3431         DSTACK(__FUNCTION_NAME);
3432         PlayerSAO *playersao = getPlayerSAO(peer_id);
3433         assert(playersao);
3434         playersao->m_hp_not_sent = false;
3435         SendHP(peer_id, playersao->getHP());
3436         m_script->player_event(playersao,"health_changed");
3437
3438         // Send to other clients
3439         std::string str = gob_cmd_punched(playersao->readDamage(), playersao->getHP());
3440         ActiveObjectMessage aom(playersao->getId(), true, str);
3441         playersao->m_messages_out.push_back(aom);
3442 }
3443
3444 void Server::SendPlayerBreath(u16 peer_id)
3445 {
3446         DSTACK(__FUNCTION_NAME);
3447         PlayerSAO *playersao = getPlayerSAO(peer_id);
3448         assert(playersao);
3449         playersao->m_breath_not_sent = false;
3450         m_script->player_event(playersao,"breath_changed");
3451         SendBreath(peer_id, playersao->getBreath());
3452 }
3453
3454 void Server::SendMovePlayer(u16 peer_id)
3455 {
3456         DSTACK(__FUNCTION_NAME);
3457         Player *player = m_env->getPlayer(peer_id);
3458         assert(player);
3459
3460         std::ostringstream os(std::ios_base::binary);
3461         writeU16(os, TOCLIENT_MOVE_PLAYER);
3462         writeV3F1000(os, player->getPosition());
3463         writeF1000(os, player->getPitch());
3464         writeF1000(os, player->getYaw());
3465
3466         {
3467                 v3f pos = player->getPosition();
3468                 f32 pitch = player->getPitch();
3469                 f32 yaw = player->getYaw();
3470                 verbosestream<<"Server: Sending TOCLIENT_MOVE_PLAYER"
3471                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3472                                 <<" pitch="<<pitch
3473                                 <<" yaw="<<yaw
3474                                 <<std::endl;
3475         }
3476
3477         // Make data buffer
3478         std::string s = os.str();
3479         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3480         // Send as reliable
3481         m_clients.send(peer_id, 0, data, true);
3482 }
3483
3484 void Server::SendLocalPlayerAnimations(u16 peer_id, v2s32 animation_frames[4], f32 animation_speed)
3485 {
3486         std::ostringstream os(std::ios_base::binary);
3487
3488         writeU16(os, TOCLIENT_LOCAL_PLAYER_ANIMATIONS);
3489         writeV2S32(os, animation_frames[0]);
3490         writeV2S32(os, animation_frames[1]);
3491         writeV2S32(os, animation_frames[2]);
3492         writeV2S32(os, animation_frames[3]);
3493         writeF1000(os, animation_speed);
3494
3495         // Make data buffer
3496         std::string s = os.str();
3497         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3498         // Send as reliable
3499         m_clients.send(peer_id, 0, data, true);
3500 }
3501
3502 void Server::SendEyeOffset(u16 peer_id, v3f first, v3f third)
3503 {
3504         std::ostringstream os(std::ios_base::binary);
3505
3506         writeU16(os, TOCLIENT_EYE_OFFSET);
3507         writeV3F1000(os, first);
3508         writeV3F1000(os, third);
3509
3510         // Make data buffer
3511         std::string s = os.str();
3512         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3513         // Send as reliable
3514         m_clients.send(peer_id, 0, data, true);
3515 }
3516 void Server::SendPlayerPrivileges(u16 peer_id)
3517 {
3518         Player *player = m_env->getPlayer(peer_id);
3519         assert(player);
3520         if(player->peer_id == PEER_ID_INEXISTENT)
3521                 return;
3522
3523         std::set<std::string> privs;
3524         m_script->getAuth(player->getName(), NULL, &privs);
3525
3526         std::ostringstream os(std::ios_base::binary);
3527         writeU16(os, TOCLIENT_PRIVILEGES);
3528         writeU16(os, privs.size());
3529         for(std::set<std::string>::const_iterator i = privs.begin();
3530                         i != privs.end(); i++){
3531                 os<<serializeString(*i);
3532         }
3533
3534         // Make data buffer
3535         std::string s = os.str();
3536         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3537         // Send as reliable
3538         m_clients.send(peer_id, 0, data, true);
3539 }
3540
3541 void Server::SendPlayerInventoryFormspec(u16 peer_id)
3542 {
3543         Player *player = m_env->getPlayer(peer_id);
3544         assert(player);
3545         if(player->peer_id == PEER_ID_INEXISTENT)
3546                 return;
3547
3548         std::ostringstream os(std::ios_base::binary);
3549         writeU16(os, TOCLIENT_INVENTORY_FORMSPEC);
3550         os<<serializeLongString(FORMSPEC_VERSION_STRING + player->inventory_formspec);
3551
3552         // Make data buffer
3553         std::string s = os.str();
3554         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3555         // Send as reliable
3556         m_clients.send(peer_id, 0, data, true);
3557 }
3558
3559 s32 Server::playSound(const SimpleSoundSpec &spec,
3560                 const ServerSoundParams &params)
3561 {
3562         // Find out initial position of sound
3563         bool pos_exists = false;
3564         v3f pos = params.getPos(m_env, &pos_exists);
3565         // If position is not found while it should be, cancel sound
3566         if(pos_exists != (params.type != ServerSoundParams::SSP_LOCAL))
3567                 return -1;
3568
3569         // Filter destination clients
3570         std::list<u16> dst_clients;
3571         if(params.to_player != "")
3572         {
3573                 Player *player = m_env->getPlayer(params.to_player.c_str());
3574                 if(!player){
3575                         infostream<<"Server::playSound: Player \""<<params.to_player
3576                                         <<"\" not found"<<std::endl;
3577                         return -1;
3578                 }
3579                 if(player->peer_id == PEER_ID_INEXISTENT){
3580                         infostream<<"Server::playSound: Player \""<<params.to_player
3581                                         <<"\" not connected"<<std::endl;
3582                         return -1;
3583                 }
3584                 dst_clients.push_back(player->peer_id);
3585         }
3586         else
3587         {
3588                 std::list<u16> clients = m_clients.getClientIDs();
3589
3590                 for(std::list<u16>::iterator
3591                                 i = clients.begin(); i != clients.end(); ++i)
3592                 {
3593                         Player *player = m_env->getPlayer(*i);
3594                         if(!player)
3595                                 continue;
3596                         if(pos_exists){
3597                                 if(player->getPosition().getDistanceFrom(pos) >
3598                                                 params.max_hear_distance)
3599                                         continue;
3600                         }
3601                         dst_clients.push_back(*i);
3602                 }
3603         }
3604         if(dst_clients.size() == 0)
3605                 return -1;
3606
3607         // Create the sound
3608         s32 id = m_next_sound_id++;
3609         // The sound will exist as a reference in m_playing_sounds
3610         m_playing_sounds[id] = ServerPlayingSound();
3611         ServerPlayingSound &psound = m_playing_sounds[id];
3612         psound.params = params;
3613         for(std::list<u16>::iterator i = dst_clients.begin();
3614                         i != dst_clients.end(); i++)
3615                 psound.clients.insert(*i);
3616         // Create packet
3617         std::ostringstream os(std::ios_base::binary);
3618         writeU16(os, TOCLIENT_PLAY_SOUND);
3619         writeS32(os, id);
3620         os<<serializeString(spec.name);
3621         writeF1000(os, spec.gain * params.gain);
3622         writeU8(os, params.type);
3623         writeV3F1000(os, pos);
3624         writeU16(os, params.object);
3625         writeU8(os, params.loop);
3626         // Make data buffer
3627         std::string s = os.str();
3628         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3629         // Send
3630         for(std::list<u16>::iterator i = dst_clients.begin();
3631                         i != dst_clients.end(); i++){
3632                 // Send as reliable
3633                 m_clients.send(*i, 0, data, true);
3634         }
3635         return id;
3636 }
3637 void Server::stopSound(s32 handle)
3638 {
3639         // Get sound reference
3640         std::map<s32, ServerPlayingSound>::iterator i =
3641                         m_playing_sounds.find(handle);
3642         if(i == m_playing_sounds.end())
3643                 return;
3644         ServerPlayingSound &psound = i->second;
3645         // Create packet
3646         std::ostringstream os(std::ios_base::binary);
3647         writeU16(os, TOCLIENT_STOP_SOUND);
3648         writeS32(os, handle);
3649         // Make data buffer
3650         std::string s = os.str();
3651         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3652         // Send
3653         for(std::set<u16>::iterator i = psound.clients.begin();
3654                         i != psound.clients.end(); i++){
3655                 // Send as reliable
3656                 m_clients.send(*i, 0, data, true);
3657         }
3658         // Remove sound reference
3659         m_playing_sounds.erase(i);
3660 }
3661
3662 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3663         std::list<u16> *far_players, float far_d_nodes)
3664 {
3665         float maxd = far_d_nodes*BS;
3666         v3f p_f = intToFloat(p, BS);
3667
3668         // Create packet
3669         u32 replysize = 8;
3670         SharedBuffer<u8> reply(replysize);
3671         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3672         writeS16(&reply[2], p.X);
3673         writeS16(&reply[4], p.Y);
3674         writeS16(&reply[6], p.Z);
3675
3676         std::list<u16> clients = m_clients.getClientIDs();
3677         for(std::list<u16>::iterator
3678                 i = clients.begin();
3679                 i != clients.end(); ++i)
3680         {
3681                 if(far_players)
3682                 {
3683                         // Get player
3684                         Player *player = m_env->getPlayer(*i);
3685                         if(player)
3686                         {
3687                                 // If player is far away, only set modified blocks not sent
3688                                 v3f player_pos = player->getPosition();
3689                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3690                                 {
3691                                         far_players->push_back(*i);
3692                                         continue;
3693                                 }
3694                         }
3695                 }
3696
3697                 // Send as reliable
3698                 m_clients.send(*i, 0, reply, true);
3699         }
3700 }
3701
3702 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3703                 std::list<u16> *far_players, float far_d_nodes,
3704                 bool remove_metadata)
3705 {
3706         float maxd = far_d_nodes*BS;
3707         v3f p_f = intToFloat(p, BS);
3708
3709         std::list<u16> clients = m_clients.getClientIDs();
3710                 for(std::list<u16>::iterator
3711                         i = clients.begin();
3712                         i != clients.end(); ++i)
3713                 {
3714
3715                 if(far_players)
3716                 {
3717                         // Get player
3718                         Player *player = m_env->getPlayer(*i);
3719                         if(player)
3720                         {
3721                                 // If player is far away, only set modified blocks not sent
3722                                 v3f player_pos = player->getPosition();
3723                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3724                                 {
3725                                         far_players->push_back(*i);
3726                                         continue;
3727                                 }
3728                         }
3729                 }
3730                 SharedBuffer<u8> reply(0);
3731                 m_clients.Lock();
3732                 RemoteClient* client = m_clients.lockedGetClientNoEx(*i);
3733                 if (client != 0)
3734                 {
3735                         // Create packet
3736                         u32 replysize = 9 + MapNode::serializedLength(client->serialization_version);
3737                         reply = SharedBuffer<u8>(replysize);
3738                         writeU16(&reply[0], TOCLIENT_ADDNODE);
3739                         writeS16(&reply[2], p.X);
3740                         writeS16(&reply[4], p.Y);
3741                         writeS16(&reply[6], p.Z);
3742                         n.serialize(&reply[8], client->serialization_version);
3743                         u32 index = 8 + MapNode::serializedLength(client->serialization_version);
3744                         writeU8(&reply[index], remove_metadata ? 0 : 1);
3745
3746                         if (!remove_metadata) {
3747                                 if (client->net_proto_version <= 21) {
3748                                         // Old clients always clear metadata; fix it
3749                                         // by sending the full block again.
3750                                         client->SetBlockNotSent(p);
3751                                 }
3752                         }
3753                 }
3754                 m_clients.Unlock();
3755
3756                 // Send as reliable
3757                 if (reply.getSize() > 0)
3758                         m_clients.send(*i, 0, reply, true);
3759         }
3760 }
3761
3762 void Server::setBlockNotSent(v3s16 p)
3763 {
3764         std::list<u16> clients = m_clients.getClientIDs();
3765         m_clients.Lock();
3766         for(std::list<u16>::iterator
3767                 i = clients.begin();
3768                 i != clients.end(); ++i)
3769         {
3770                 RemoteClient *client = m_clients.lockedGetClientNoEx(*i);
3771                 client->SetBlockNotSent(p);
3772         }
3773         m_clients.Unlock();
3774 }
3775
3776 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver, u16 net_proto_version)
3777 {
3778         DSTACK(__FUNCTION_NAME);
3779
3780         v3s16 p = block->getPos();
3781
3782 #if 0
3783         // Analyze it a bit
3784         bool completely_air = true;
3785         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
3786         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
3787         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
3788         {
3789                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
3790                 {
3791                         completely_air = false;
3792                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
3793                 }
3794         }
3795
3796         // Print result
3797         infostream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
3798         if(completely_air)
3799                 infostream<<"[completely air] ";
3800         infostream<<std::endl;
3801 #endif
3802
3803         /*
3804                 Create a packet with the block in the right format
3805         */
3806
3807         std::ostringstream os(std::ios_base::binary);
3808         block->serialize(os, ver, false);
3809         block->serializeNetworkSpecific(os, net_proto_version);
3810         std::string s = os.str();
3811         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
3812
3813         u32 replysize = 8 + blockdata.getSize();
3814         SharedBuffer<u8> reply(replysize);
3815         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
3816         writeS16(&reply[2], p.X);
3817         writeS16(&reply[4], p.Y);
3818         writeS16(&reply[6], p.Z);
3819         memcpy(&reply[8], *blockdata, blockdata.getSize());
3820
3821         /*infostream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3822                         <<":  \tpacket size: "<<replysize<<std::endl;*/
3823
3824         /*
3825                 Send packet
3826         */
3827         m_clients.send(peer_id, 2, reply, true);
3828 }
3829
3830 void Server::SendBlocks(float dtime)
3831 {
3832         DSTACK(__FUNCTION_NAME);
3833
3834         JMutexAutoLock envlock(m_env_mutex);
3835         //TODO check if one big lock could be faster then multiple small ones
3836
3837         ScopeProfiler sp(g_profiler, "Server: sel and send blocks to clients");
3838
3839         std::vector<PrioritySortedBlockTransfer> queue;
3840
3841         s32 total_sending = 0;
3842
3843         {
3844                 ScopeProfiler sp(g_profiler, "Server: selecting blocks for sending");
3845
3846                 std::list<u16> clients = m_clients.getClientIDs();
3847
3848                 m_clients.Lock();
3849                 for(std::list<u16>::iterator
3850                         i = clients.begin();
3851                         i != clients.end(); ++i)
3852                 {
3853                         RemoteClient *client = m_clients.lockedGetClientNoEx(*i, CS_Active);
3854
3855                         if (client == NULL)
3856                                 return;
3857
3858                         total_sending += client->SendingCount();
3859                         client->GetNextBlocks(m_env,m_emerge, dtime, queue);
3860                 }
3861                 m_clients.Unlock();
3862         }
3863
3864         // Sort.
3865         // Lowest priority number comes first.
3866         // Lowest is most important.
3867         std::sort(queue.begin(), queue.end());
3868
3869         m_clients.Lock();
3870         for(u32 i=0; i<queue.size(); i++)
3871         {
3872                 //TODO: Calculate limit dynamically
3873                 if(total_sending >= g_settings->getS32
3874                                 ("max_simultaneous_block_sends_server_total"))
3875                         break;
3876
3877                 PrioritySortedBlockTransfer q = queue[i];
3878
3879                 MapBlock *block = NULL;
3880                 try
3881                 {
3882                         block = m_env->getMap().getBlockNoCreate(q.pos);
3883                 }
3884                 catch(InvalidPositionException &e)
3885                 {
3886                         continue;
3887                 }
3888
3889                 RemoteClient *client = m_clients.lockedGetClientNoEx(q.peer_id, CS_Active);
3890
3891                 if(!client)
3892                         continue;
3893
3894                 SendBlockNoLock(q.peer_id, block, client->serialization_version, client->net_proto_version);
3895
3896                 client->SentBlock(q.pos);
3897                 total_sending++;
3898         }
3899         m_clients.Unlock();
3900 }
3901
3902 void Server::fillMediaCache()
3903 {
3904         DSTACK(__FUNCTION_NAME);
3905
3906         infostream<<"Server: Calculating media file checksums"<<std::endl;
3907
3908         // Collect all media file paths
3909         std::list<std::string> paths;
3910         for(std::vector<ModSpec>::iterator i = m_mods.begin();
3911                         i != m_mods.end(); i++){
3912                 const ModSpec &mod = *i;
3913                 paths.push_back(mod.path + DIR_DELIM + "textures");
3914                 paths.push_back(mod.path + DIR_DELIM + "sounds");
3915                 paths.push_back(mod.path + DIR_DELIM + "media");
3916                 paths.push_back(mod.path + DIR_DELIM + "models");
3917         }
3918         paths.push_back(porting::path_user + DIR_DELIM + "textures" + DIR_DELIM + "server");
3919
3920         // Collect media file information from paths into cache
3921         for(std::list<std::string>::iterator i = paths.begin();
3922                         i != paths.end(); i++)
3923         {
3924                 std::string mediapath = *i;
3925                 std::vector<fs::DirListNode> dirlist = fs::GetDirListing(mediapath);
3926                 for(u32 j=0; j<dirlist.size(); j++){
3927                         if(dirlist[j].dir) // Ignode dirs
3928                                 continue;
3929                         std::string filename = dirlist[j].name;
3930                         // If name contains illegal characters, ignore the file
3931                         if(!string_allowed(filename, TEXTURENAME_ALLOWED_CHARS)){
3932                                 infostream<<"Server: ignoring illegal file name: \""
3933                                                 <<filename<<"\""<<std::endl;
3934                                 continue;
3935                         }
3936                         // If name is not in a supported format, ignore it
3937                         const char *supported_ext[] = {
3938                                 ".png", ".jpg", ".bmp", ".tga",
3939                                 ".pcx", ".ppm", ".psd", ".wal", ".rgb",
3940                                 ".ogg",
3941                                 ".x", ".b3d", ".md2", ".obj",
3942                                 NULL
3943                         };
3944                         if(removeStringEnd(filename, supported_ext) == ""){
3945                                 infostream<<"Server: ignoring unsupported file extension: \""
3946                                                 <<filename<<"\""<<std::endl;
3947                                 continue;
3948                         }
3949                         // Ok, attempt to load the file and add to cache
3950                         std::string filepath = mediapath + DIR_DELIM + filename;
3951                         // Read data
3952                         std::ifstream fis(filepath.c_str(), std::ios_base::binary);
3953                         if(fis.good() == false){
3954                                 errorstream<<"Server::fillMediaCache(): Could not open \""
3955                                                 <<filename<<"\" for reading"<<std::endl;
3956                                 continue;
3957                         }
3958                         std::ostringstream tmp_os(std::ios_base::binary);
3959                         bool bad = false;
3960                         for(;;){
3961                                 char buf[1024];
3962                                 fis.read(buf, 1024);
3963                                 std::streamsize len = fis.gcount();
3964                                 tmp_os.write(buf, len);
3965                                 if(fis.eof())
3966                                         break;
3967                                 if(!fis.good()){
3968                                         bad = true;
3969                                         break;
3970                                 }
3971                         }
3972                         if(bad){
3973                                 errorstream<<"Server::fillMediaCache(): Failed to read \""
3974                                                 <<filename<<"\""<<std::endl;
3975                                 continue;
3976                         }
3977                         if(tmp_os.str().length() == 0){
3978                                 errorstream<<"Server::fillMediaCache(): Empty file \""
3979                                                 <<filepath<<"\""<<std::endl;
3980                                 continue;
3981                         }
3982
3983                         SHA1 sha1;
3984                         sha1.addBytes(tmp_os.str().c_str(), tmp_os.str().length());
3985
3986                         unsigned char *digest = sha1.getDigest();
3987                         std::string sha1_base64 = base64_encode(digest, 20);
3988                         std::string sha1_hex = hex_encode((char*)digest, 20);
3989                         free(digest);
3990
3991                         // Put in list
3992                         this->m_media[filename] = MediaInfo(filepath, sha1_base64);
3993                         verbosestream<<"Server: "<<sha1_hex<<" is "<<filename<<std::endl;
3994                 }
3995         }
3996 }
3997
3998 struct SendableMediaAnnouncement
3999 {
4000         std::string name;
4001         std::string sha1_digest;
4002
4003         SendableMediaAnnouncement(const std::string &name_="",
4004                                   const std::string &sha1_digest_=""):
4005                 name(name_),
4006                 sha1_digest(sha1_digest_)
4007         {}
4008 };
4009
4010 void Server::sendMediaAnnouncement(u16 peer_id)
4011 {
4012         DSTACK(__FUNCTION_NAME);
4013
4014         verbosestream<<"Server: Announcing files to id("<<peer_id<<")"
4015                         <<std::endl;
4016
4017         std::list<SendableMediaAnnouncement> file_announcements;
4018
4019         for(std::map<std::string, MediaInfo>::iterator i = m_media.begin();
4020                         i != m_media.end(); i++){
4021                 // Put in list
4022                 file_announcements.push_back(
4023                                 SendableMediaAnnouncement(i->first, i->second.sha1_digest));
4024         }
4025
4026         // Make packet
4027         std::ostringstream os(std::ios_base::binary);
4028
4029         /*
4030                 u16 command
4031                 u32 number of files
4032                 for each texture {
4033                         u16 length of name
4034                         string name
4035                         u16 length of sha1_digest
4036                         string sha1_digest
4037                 }
4038         */
4039
4040         writeU16(os, TOCLIENT_ANNOUNCE_MEDIA);
4041         writeU16(os, file_announcements.size());
4042
4043         for(std::list<SendableMediaAnnouncement>::iterator
4044                         j = file_announcements.begin();
4045                         j != file_announcements.end(); ++j){
4046                 os<<serializeString(j->name);
4047                 os<<serializeString(j->sha1_digest);
4048         }
4049         os<<serializeString(g_settings->get("remote_media"));
4050
4051         // Make data buffer
4052         std::string s = os.str();
4053         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
4054
4055         // Send as reliable
4056         m_clients.send(peer_id, 0, data, true);
4057 }
4058
4059 struct SendableMedia
4060 {
4061         std::string name;
4062         std::string path;
4063         std::string data;
4064
4065         SendableMedia(const std::string &name_="", const std::string &path_="",
4066                       const std::string &data_=""):
4067                 name(name_),
4068                 path(path_),
4069                 data(data_)
4070         {}
4071 };
4072
4073 void Server::sendRequestedMedia(u16 peer_id,
4074                 const std::list<std::string> &tosend)
4075 {
4076         DSTACK(__FUNCTION_NAME);
4077
4078         verbosestream<<"Server::sendRequestedMedia(): "
4079                         <<"Sending files to client"<<std::endl;
4080
4081         /* Read files */
4082
4083         // Put 5kB in one bunch (this is not accurate)
4084         u32 bytes_per_bunch = 5000;
4085
4086         std::vector< std::list<SendableMedia> > file_bunches;
4087         file_bunches.push_back(std::list<SendableMedia>());
4088
4089         u32 file_size_bunch_total = 0;
4090
4091         for(std::list<std::string>::const_iterator i = tosend.begin();
4092                         i != tosend.end(); ++i)
4093         {
4094                 const std::string &name = *i;
4095
4096                 if(m_media.find(name) == m_media.end()){
4097                         errorstream<<"Server::sendRequestedMedia(): Client asked for "
4098                                         <<"unknown file \""<<(name)<<"\""<<std::endl;
4099                         continue;
4100                 }
4101
4102                 //TODO get path + name
4103                 std::string tpath = m_media[name].path;
4104
4105                 // Read data
4106                 std::ifstream fis(tpath.c_str(), std::ios_base::binary);
4107                 if(fis.good() == false){
4108                         errorstream<<"Server::sendRequestedMedia(): Could not open \""
4109                                         <<tpath<<"\" for reading"<<std::endl;
4110                         continue;
4111                 }
4112                 std::ostringstream tmp_os(std::ios_base::binary);
4113                 bool bad = false;
4114                 for(;;){
4115                         char buf[1024];
4116                         fis.read(buf, 1024);
4117                         std::streamsize len = fis.gcount();
4118                         tmp_os.write(buf, len);
4119                         file_size_bunch_total += len;
4120                         if(fis.eof())
4121                                 break;
4122                         if(!fis.good()){
4123                                 bad = true;
4124                                 break;
4125                         }
4126                 }
4127                 if(bad){
4128                         errorstream<<"Server::sendRequestedMedia(): Failed to read \""
4129                                         <<name<<"\""<<std::endl;
4130                         continue;
4131                 }
4132                 /*infostream<<"Server::sendRequestedMedia(): Loaded \""
4133                                 <<tname<<"\""<<std::endl;*/
4134                 // Put in list
4135                 file_bunches[file_bunches.size()-1].push_back(
4136                                 SendableMedia(name, tpath, tmp_os.str()));
4137
4138                 // Start next bunch if got enough data
4139                 if(file_size_bunch_total >= bytes_per_bunch){
4140                         file_bunches.push_back(std::list<SendableMedia>());
4141                         file_size_bunch_total = 0;
4142                 }
4143
4144         }
4145
4146         /* Create and send packets */
4147
4148         u32 num_bunches = file_bunches.size();
4149         for(u32 i=0; i<num_bunches; i++)
4150         {
4151                 std::ostringstream os(std::ios_base::binary);
4152
4153                 /*
4154                         u16 command
4155                         u16 total number of texture bunches
4156                         u16 index of this bunch
4157                         u32 number of files in this bunch
4158                         for each file {
4159                                 u16 length of name
4160                                 string name
4161                                 u32 length of data
4162                                 data
4163                         }
4164                 */
4165
4166                 writeU16(os, TOCLIENT_MEDIA);
4167                 writeU16(os, num_bunches);
4168                 writeU16(os, i);
4169                 writeU32(os, file_bunches[i].size());
4170
4171                 for(std::list<SendableMedia>::iterator
4172                                 j = file_bunches[i].begin();
4173                                 j != file_bunches[i].end(); ++j){
4174                         os<<serializeString(j->name);
4175                         os<<serializeLongString(j->data);
4176                 }
4177
4178                 // Make data buffer
4179                 std::string s = os.str();
4180                 verbosestream<<"Server::sendRequestedMedia(): bunch "
4181                                 <<i<<"/"<<num_bunches
4182                                 <<" files="<<file_bunches[i].size()
4183                                 <<" size=" <<s.size()<<std::endl;
4184                 SharedBuffer<u8> data((u8*)s.c_str(), s.size());
4185                 // Send as reliable
4186                 m_clients.send(peer_id, 2, data, true);
4187         }
4188 }
4189
4190 void Server::sendDetachedInventory(const std::string &name, u16 peer_id)
4191 {
4192         if(m_detached_inventories.count(name) == 0){
4193                 errorstream<<__FUNCTION_NAME<<": \""<<name<<"\" not found"<<std::endl;
4194                 return;
4195         }
4196         Inventory *inv = m_detached_inventories[name];
4197
4198         std::ostringstream os(std::ios_base::binary);
4199         writeU16(os, TOCLIENT_DETACHED_INVENTORY);
4200         os<<serializeString(name);
4201         inv->serialize(os);
4202
4203         // Make data buffer
4204         std::string s = os.str();
4205         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
4206
4207         if (peer_id != PEER_ID_INEXISTENT)
4208         {
4209                 // Send as reliable
4210                 m_clients.send(peer_id, 0, data, true);
4211         }
4212         else
4213         {
4214                 m_clients.sendToAll(0,data,true);
4215         }
4216 }
4217
4218 void Server::sendDetachedInventories(u16 peer_id)
4219 {
4220         DSTACK(__FUNCTION_NAME);
4221
4222         for(std::map<std::string, Inventory*>::iterator
4223                         i = m_detached_inventories.begin();
4224                         i != m_detached_inventories.end(); i++){
4225                 const std::string &name = i->first;
4226                 //Inventory *inv = i->second;
4227                 sendDetachedInventory(name, peer_id);
4228         }
4229 }
4230
4231 /*
4232         Something random
4233 */
4234
4235 void Server::DiePlayer(u16 peer_id)
4236 {
4237         DSTACK(__FUNCTION_NAME);
4238
4239         PlayerSAO *playersao = getPlayerSAO(peer_id);
4240         assert(playersao);
4241
4242         infostream<<"Server::DiePlayer(): Player "
4243                         <<playersao->getPlayer()->getName()
4244                         <<" dies"<<std::endl;
4245
4246         playersao->setHP(0);
4247
4248         // Trigger scripted stuff
4249         m_script->on_dieplayer(playersao);
4250
4251         SendPlayerHP(peer_id);
4252         SendDeathscreen(peer_id, false, v3f(0,0,0));
4253 }
4254
4255 void Server::RespawnPlayer(u16 peer_id)
4256 {
4257         DSTACK(__FUNCTION_NAME);
4258
4259         PlayerSAO *playersao = getPlayerSAO(peer_id);
4260         assert(playersao);
4261
4262         infostream<<"Server::RespawnPlayer(): Player "
4263                         <<playersao->getPlayer()->getName()
4264                         <<" respawns"<<std::endl;
4265
4266         playersao->setHP(PLAYER_MAX_HP);
4267
4268         bool repositioned = m_script->on_respawnplayer(playersao);
4269         if(!repositioned){
4270                 v3f pos = findSpawnPos(m_env->getServerMap());
4271                 playersao->setPos(pos);
4272         }
4273 }
4274
4275 void Server::DenyAccess(u16 peer_id, const std::wstring &reason)
4276 {
4277         DSTACK(__FUNCTION_NAME);
4278
4279         SendAccessDenied(peer_id, reason);
4280         m_clients.event(peer_id, CSE_SetDenied);
4281         m_con.DisconnectPeer(peer_id);
4282 }
4283
4284 void Server::DeleteClient(u16 peer_id, ClientDeletionReason reason)
4285 {
4286         DSTACK(__FUNCTION_NAME);
4287         std::wstring message;
4288         {
4289                 /*
4290                         Clear references to playing sounds
4291                 */
4292                 for(std::map<s32, ServerPlayingSound>::iterator
4293                                 i = m_playing_sounds.begin();
4294                                 i != m_playing_sounds.end();)
4295                 {
4296                         ServerPlayingSound &psound = i->second;
4297                         psound.clients.erase(peer_id);
4298                         if(psound.clients.size() == 0)
4299                                 m_playing_sounds.erase(i++);
4300                         else
4301                                 i++;
4302                 }
4303
4304                 Player *player = m_env->getPlayer(peer_id);
4305
4306                 // Collect information about leaving in chat
4307                 {
4308                         if(player != NULL && reason != CDR_DENY)
4309                         {
4310                                 std::wstring name = narrow_to_wide(player->getName());
4311                                 message += L"*** ";
4312                                 message += name;
4313                                 message += L" left the game.";
4314                                 if(reason == CDR_TIMEOUT)
4315                                         message += L" (timed out)";
4316                         }
4317                 }
4318
4319                 /* Run scripts and remove from environment */
4320                 {
4321                         if(player != NULL)
4322                         {
4323                                 PlayerSAO *playersao = player->getPlayerSAO();
4324                                 assert(playersao);
4325
4326                                 m_script->on_leaveplayer(playersao);
4327
4328                                 playersao->disconnected();
4329                         }
4330                 }
4331
4332                 /*
4333                         Print out action
4334                 */
4335                 {
4336                         if(player != NULL && reason != CDR_DENY)
4337                         {
4338                                 std::ostringstream os(std::ios_base::binary);
4339                                 std::list<u16> clients = m_clients.getClientIDs();
4340
4341                                 for(std::list<u16>::iterator
4342                                         i = clients.begin();
4343                                         i != clients.end(); ++i)
4344                                 {
4345                                         // Get player
4346                                         Player *player = m_env->getPlayer(*i);
4347                                         if(!player)
4348                                                 continue;
4349                                         // Get name of player
4350                                         os<<player->getName()<<" ";
4351                                 }
4352
4353                                 actionstream<<player->getName()<<" "
4354                                                 <<(reason==CDR_TIMEOUT?"times out.":"leaves game.")
4355                                                 <<" List of players: "<<os.str()<<std::endl;
4356                         }
4357                 }
4358                 {
4359                         JMutexAutoLock env_lock(m_env_mutex);
4360                         m_clients.DeleteClient(peer_id);
4361                 }
4362         }
4363
4364         // Send leave chat message to all remaining clients
4365         if(message.length() != 0)
4366                 SendChatMessage(PEER_ID_INEXISTENT,message);
4367 }
4368
4369 void Server::UpdateCrafting(u16 peer_id)
4370 {
4371         DSTACK(__FUNCTION_NAME);
4372
4373         Player* player = m_env->getPlayer(peer_id);
4374         assert(player);
4375
4376         // Get a preview for crafting
4377         ItemStack preview;
4378         InventoryLocation loc;
4379         loc.setPlayer(player->getName());
4380         getCraftingResult(&player->inventory, preview, false, this);
4381         m_env->getScriptIface()->item_CraftPredict(preview, player->getPlayerSAO(), (&player->inventory)->getList("craft"), loc);
4382
4383         // Put the new preview in
4384         InventoryList *plist = player->inventory.getList("craftpreview");
4385         assert(plist);
4386         assert(plist->getSize() >= 1);
4387         plist->changeItem(0, preview);
4388 }
4389
4390 RemoteClient* Server::getClient(u16 peer_id, ClientState state_min)
4391 {
4392         RemoteClient *client = getClientNoEx(peer_id,state_min);
4393         if(!client)
4394                 throw ClientNotFoundException("Client not found");
4395
4396         return client;
4397 }
4398 RemoteClient* Server::getClientNoEx(u16 peer_id, ClientState state_min)
4399 {
4400         return m_clients.getClientNoEx(peer_id, state_min);
4401 }
4402
4403 std::string Server::getPlayerName(u16 peer_id)
4404 {
4405         Player *player = m_env->getPlayer(peer_id);
4406         if(player == NULL)
4407                 return "[id="+itos(peer_id)+"]";
4408         return player->getName();
4409 }
4410
4411 PlayerSAO* Server::getPlayerSAO(u16 peer_id)
4412 {
4413         Player *player = m_env->getPlayer(peer_id);
4414         if(player == NULL)
4415                 return NULL;
4416         return player->getPlayerSAO();
4417 }
4418
4419 std::wstring Server::getStatusString()
4420 {
4421         std::wostringstream os(std::ios_base::binary);
4422         os<<L"# Server: ";
4423         // Version
4424         os<<L"version="<<narrow_to_wide(minetest_version_simple);
4425         // Uptime
4426         os<<L", uptime="<<m_uptime.get();
4427         // Max lag estimate
4428         os<<L", max_lag="<<m_env->getMaxLagEstimate();
4429         // Information about clients
4430         bool first = true;
4431         os<<L", clients={";
4432         std::list<u16> clients = m_clients.getClientIDs();
4433         for(std::list<u16>::iterator i = clients.begin();
4434                 i != clients.end(); ++i)
4435         {
4436                 // Get player
4437                 Player *player = m_env->getPlayer(*i);
4438                 // Get name of player
4439                 std::wstring name = L"unknown";
4440                 if(player != NULL)
4441                         name = narrow_to_wide(player->getName());
4442                 // Add name to information string
4443                 if(!first)
4444                         os<<L",";
4445                 else
4446                         first = false;
4447                 os<<name;
4448         }
4449         os<<L"}";
4450         if(((ServerMap*)(&m_env->getMap()))->isSavingEnabled() == false)
4451                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4452         if(g_settings->get("motd") != "")
4453                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings->get("motd"));
4454         return os.str();
4455 }
4456
4457 std::set<std::string> Server::getPlayerEffectivePrivs(const std::string &name)
4458 {
4459         std::set<std::string> privs;
4460         m_script->getAuth(name, NULL, &privs);
4461         return privs;
4462 }
4463
4464 bool Server::checkPriv(const std::string &name, const std::string &priv)
4465 {
4466         std::set<std::string> privs = getPlayerEffectivePrivs(name);
4467         return (privs.count(priv) != 0);
4468 }
4469
4470 void Server::reportPrivsModified(const std::string &name)
4471 {
4472         if(name == ""){
4473                 std::list<u16> clients = m_clients.getClientIDs();
4474                 for(std::list<u16>::iterator
4475                                 i = clients.begin();
4476                                 i != clients.end(); ++i){
4477                         Player *player = m_env->getPlayer(*i);
4478                         reportPrivsModified(player->getName());
4479                 }
4480         } else {
4481                 Player *player = m_env->getPlayer(name.c_str());
4482                 if(!player)
4483                         return;
4484                 SendPlayerPrivileges(player->peer_id);
4485                 PlayerSAO *sao = player->getPlayerSAO();
4486                 if(!sao)
4487                         return;
4488                 sao->updatePrivileges(
4489                                 getPlayerEffectivePrivs(name),
4490                                 isSingleplayer());
4491         }
4492 }
4493
4494 void Server::reportInventoryFormspecModified(const std::string &name)
4495 {
4496         Player *player = m_env->getPlayer(name.c_str());
4497         if(!player)
4498                 return;
4499         SendPlayerInventoryFormspec(player->peer_id);
4500 }
4501
4502 void Server::setIpBanned(const std::string &ip, const std::string &name)
4503 {
4504         m_banmanager->add(ip, name);
4505 }
4506
4507 void Server::unsetIpBanned(const std::string &ip_or_name)
4508 {
4509         m_banmanager->remove(ip_or_name);
4510 }
4511
4512 std::string Server::getBanDescription(const std::string &ip_or_name)
4513 {
4514         return m_banmanager->getBanDescription(ip_or_name);
4515 }
4516
4517 void Server::notifyPlayer(const char *name, const std::wstring &msg)
4518 {
4519         Player *player = m_env->getPlayer(name);
4520         if(!player)
4521                 return;
4522
4523         if (player->peer_id == PEER_ID_INEXISTENT)
4524                 return;
4525
4526         SendChatMessage(player->peer_id, msg);
4527 }
4528
4529 bool Server::showFormspec(const char *playername, const std::string &formspec, const std::string &formname)
4530 {
4531         Player *player = m_env->getPlayer(playername);
4532
4533         if(!player)
4534         {
4535                 infostream<<"showFormspec: couldn't find player:"<<playername<<std::endl;
4536                 return false;
4537         }
4538
4539         SendShowFormspecMessage(player->peer_id, formspec, formname);
4540         return true;
4541 }
4542
4543 u32 Server::hudAdd(Player *player, HudElement *form) {
4544         if (!player)
4545                 return -1;
4546
4547         u32 id = player->addHud(form);
4548
4549         SendHUDAdd(player->peer_id, id, form);
4550
4551         return id;
4552 }
4553
4554 bool Server::hudRemove(Player *player, u32 id) {
4555         if (!player)
4556                 return false;
4557
4558         HudElement* todel = player->removeHud(id);
4559
4560         if (!todel)
4561                 return false;
4562
4563         delete todel;
4564
4565         SendHUDRemove(player->peer_id, id);
4566         return true;
4567 }
4568
4569 bool Server::hudChange(Player *player, u32 id, HudElementStat stat, void *data) {
4570         if (!player)
4571                 return false;
4572
4573         SendHUDChange(player->peer_id, id, stat, data);
4574         return true;
4575 }
4576
4577 bool Server::hudSetFlags(Player *player, u32 flags, u32 mask) {
4578         if (!player)
4579                 return false;
4580
4581         SendHUDSetFlags(player->peer_id, flags, mask);
4582         player->hud_flags = flags;
4583
4584         m_script->player_event(player->getPlayerSAO(),"hud_changed");
4585         return true;
4586 }
4587
4588 bool Server::hudSetHotbarItemcount(Player *player, s32 hotbar_itemcount) {
4589         if (!player)
4590                 return false;
4591         if (hotbar_itemcount <= 0 || hotbar_itemcount > HUD_HOTBAR_ITEMCOUNT_MAX)
4592                 return false;
4593
4594         std::ostringstream os(std::ios::binary);
4595         writeS32(os, hotbar_itemcount);
4596         SendHUDSetParam(player->peer_id, HUD_PARAM_HOTBAR_ITEMCOUNT, os.str());
4597         return true;
4598 }
4599
4600 void Server::hudSetHotbarImage(Player *player, std::string name) {
4601         if (!player)
4602                 return;
4603
4604         SendHUDSetParam(player->peer_id, HUD_PARAM_HOTBAR_IMAGE, name);
4605 }
4606
4607 void Server::hudSetHotbarSelectedImage(Player *player, std::string name) {
4608         if (!player)
4609                 return;
4610
4611         SendHUDSetParam(player->peer_id, HUD_PARAM_HOTBAR_SELECTED_IMAGE, name);
4612 }
4613
4614 bool Server::setLocalPlayerAnimations(Player *player, v2s32 animation_frames[4], f32 frame_speed)
4615 {
4616         if (!player)
4617                 return false;
4618
4619         SendLocalPlayerAnimations(player->peer_id, animation_frames, frame_speed);
4620         return true;
4621 }
4622
4623 bool Server::setPlayerEyeOffset(Player *player, v3f first, v3f third)
4624 {
4625         if (!player)
4626                 return false;
4627
4628         SendEyeOffset(player->peer_id, first, third);
4629         return true;
4630 }
4631
4632 bool Server::setSky(Player *player, const video::SColor &bgcolor,
4633                 const std::string &type, const std::vector<std::string> &params)
4634 {
4635         if (!player)
4636                 return false;
4637
4638         SendSetSky(player->peer_id, bgcolor, type, params);
4639         return true;
4640 }
4641
4642 bool Server::overrideDayNightRatio(Player *player, bool do_override,
4643                 float ratio)
4644 {
4645         if (!player)
4646                 return false;
4647
4648         SendOverrideDayNightRatio(player->peer_id, do_override, ratio);
4649         return true;
4650 }
4651
4652 void Server::notifyPlayers(const std::wstring &msg)
4653 {
4654         SendChatMessage(PEER_ID_INEXISTENT,msg);
4655 }
4656
4657 void Server::spawnParticle(const char *playername, v3f pos,
4658                 v3f velocity, v3f acceleration,
4659                 float expirationtime, float size, bool
4660                 collisiondetection, bool vertical, std::string texture)
4661 {
4662         Player *player = m_env->getPlayer(playername);
4663         if(!player)
4664                 return;
4665         SendSpawnParticle(player->peer_id, pos, velocity, acceleration,
4666                         expirationtime, size, collisiondetection, vertical, texture);
4667 }
4668
4669 void Server::spawnParticleAll(v3f pos, v3f velocity, v3f acceleration,
4670                 float expirationtime, float size,
4671                 bool collisiondetection, bool vertical, std::string texture)
4672 {
4673         SendSpawnParticle(PEER_ID_INEXISTENT,pos, velocity, acceleration,
4674                         expirationtime, size, collisiondetection, vertical, texture);
4675 }
4676
4677 u32 Server::addParticleSpawner(const char *playername,
4678                 u16 amount, float spawntime,
4679                 v3f minpos, v3f maxpos,
4680                 v3f minvel, v3f maxvel,
4681                 v3f minacc, v3f maxacc,
4682                 float minexptime, float maxexptime,
4683                 float minsize, float maxsize,
4684                 bool collisiondetection, bool vertical, std::string texture)
4685 {
4686         Player *player = m_env->getPlayer(playername);
4687         if(!player)
4688                 return -1;
4689
4690         u32 id = 0;
4691         for(;;) // look for unused particlespawner id
4692         {
4693                 id++;
4694                 if (std::find(m_particlespawner_ids.begin(),
4695                                 m_particlespawner_ids.end(), id)
4696                                 == m_particlespawner_ids.end())
4697                 {
4698                         m_particlespawner_ids.push_back(id);
4699                         break;
4700                 }
4701         }
4702
4703         SendAddParticleSpawner(player->peer_id, amount, spawntime,
4704                 minpos, maxpos, minvel, maxvel, minacc, maxacc,
4705                 minexptime, maxexptime, minsize, maxsize,
4706                 collisiondetection, vertical, texture, id);
4707
4708         return id;
4709 }
4710
4711 u32 Server::addParticleSpawnerAll(u16 amount, float spawntime,
4712                 v3f minpos, v3f maxpos,
4713                 v3f minvel, v3f maxvel,
4714                 v3f minacc, v3f maxacc,
4715                 float minexptime, float maxexptime,
4716                 float minsize, float maxsize,
4717                 bool collisiondetection, bool vertical, std::string texture)
4718 {
4719         u32 id = 0;
4720         for(;;) // look for unused particlespawner id
4721         {
4722                 id++;
4723                 if (std::find(m_particlespawner_ids.begin(),
4724                                 m_particlespawner_ids.end(), id)
4725                                 == m_particlespawner_ids.end())
4726                 {
4727                         m_particlespawner_ids.push_back(id);
4728                         break;
4729                 }
4730         }
4731
4732         SendAddParticleSpawner(PEER_ID_INEXISTENT, amount, spawntime,
4733                 minpos, maxpos, minvel, maxvel, minacc, maxacc,
4734                 minexptime, maxexptime, minsize, maxsize,
4735                 collisiondetection, vertical, texture, id);
4736
4737         return id;
4738 }
4739
4740 void Server::deleteParticleSpawner(const char *playername, u32 id)
4741 {
4742         Player *player = m_env->getPlayer(playername);
4743         if(!player)
4744                 return;
4745
4746         m_particlespawner_ids.erase(
4747                         std::remove(m_particlespawner_ids.begin(),
4748                         m_particlespawner_ids.end(), id),
4749                         m_particlespawner_ids.end());
4750         SendDeleteParticleSpawner(player->peer_id, id);
4751 }
4752
4753 void Server::deleteParticleSpawnerAll(u32 id)
4754 {
4755         m_particlespawner_ids.erase(
4756                         std::remove(m_particlespawner_ids.begin(),
4757                         m_particlespawner_ids.end(), id),
4758                         m_particlespawner_ids.end());
4759         SendDeleteParticleSpawner(PEER_ID_INEXISTENT, id);
4760 }
4761
4762 Inventory* Server::createDetachedInventory(const std::string &name)
4763 {
4764         if(m_detached_inventories.count(name) > 0){
4765                 infostream<<"Server clearing detached inventory \""<<name<<"\""<<std::endl;
4766                 delete m_detached_inventories[name];
4767         } else {
4768                 infostream<<"Server creating detached inventory \""<<name<<"\""<<std::endl;
4769         }
4770         Inventory *inv = new Inventory(m_itemdef);
4771         assert(inv);
4772         m_detached_inventories[name] = inv;
4773         //TODO find a better way to do this
4774         sendDetachedInventory(name,PEER_ID_INEXISTENT);
4775         return inv;
4776 }
4777
4778 class BoolScopeSet
4779 {
4780 public:
4781         BoolScopeSet(bool *dst, bool val):
4782                 m_dst(dst)
4783         {
4784                 m_orig_state = *m_dst;
4785                 *m_dst = val;
4786         }
4787         ~BoolScopeSet()
4788         {
4789                 *m_dst = m_orig_state;
4790         }
4791 private:
4792         bool *m_dst;
4793         bool m_orig_state;
4794 };
4795
4796 // actions: time-reversed list
4797 // Return value: success/failure
4798 bool Server::rollbackRevertActions(const std::list<RollbackAction> &actions,
4799                 std::list<std::string> *log)
4800 {
4801         infostream<<"Server::rollbackRevertActions(len="<<actions.size()<<")"<<std::endl;
4802         ServerMap *map = (ServerMap*)(&m_env->getMap());
4803         // Disable rollback report sink while reverting
4804         BoolScopeSet rollback_scope_disable(&m_rollback_sink_enabled, false);
4805
4806         // Fail if no actions to handle
4807         if(actions.empty()){
4808                 log->push_back("Nothing to do.");
4809                 return false;
4810         }
4811
4812         int num_tried = 0;
4813         int num_failed = 0;
4814
4815         for(std::list<RollbackAction>::const_iterator
4816                         i = actions.begin();
4817                         i != actions.end(); i++)
4818         {
4819                 const RollbackAction &action = *i;
4820                 num_tried++;
4821                 bool success = action.applyRevert(map, this, this);
4822                 if(!success){
4823                         num_failed++;
4824                         std::ostringstream os;
4825                         os<<"Revert of step ("<<num_tried<<") "<<action.toString()<<" failed";
4826                         infostream<<"Map::rollbackRevertActions(): "<<os.str()<<std::endl;
4827                         if(log)
4828                                 log->push_back(os.str());
4829                 }else{
4830                         std::ostringstream os;
4831                         os<<"Successfully reverted step ("<<num_tried<<") "<<action.toString();
4832                         infostream<<"Map::rollbackRevertActions(): "<<os.str()<<std::endl;
4833                         if(log)
4834                                 log->push_back(os.str());
4835                 }
4836         }
4837
4838         infostream<<"Map::rollbackRevertActions(): "<<num_failed<<"/"<<num_tried
4839                         <<" failed"<<std::endl;
4840
4841         // Call it done if less than half failed
4842         return num_failed <= num_tried/2;
4843 }
4844
4845 // IGameDef interface
4846 // Under envlock
4847 IItemDefManager* Server::getItemDefManager()
4848 {
4849         return m_itemdef;
4850 }
4851 INodeDefManager* Server::getNodeDefManager()
4852 {
4853         return m_nodedef;
4854 }
4855 ICraftDefManager* Server::getCraftDefManager()
4856 {
4857         return m_craftdef;
4858 }
4859 ITextureSource* Server::getTextureSource()
4860 {
4861         return NULL;
4862 }
4863 IShaderSource* Server::getShaderSource()
4864 {
4865         return NULL;
4866 }
4867 u16 Server::allocateUnknownNodeId(const std::string &name)
4868 {
4869         return m_nodedef->allocateDummy(name);
4870 }
4871 ISoundManager* Server::getSoundManager()
4872 {
4873         return &dummySoundManager;
4874 }
4875 MtEventManager* Server::getEventManager()
4876 {
4877         return m_event;
4878 }
4879 IRollbackReportSink* Server::getRollbackReportSink()
4880 {
4881         if(!m_enable_rollback_recording)
4882                 return NULL;
4883         if(!m_rollback_sink_enabled)
4884                 return NULL;
4885         return m_rollback;
4886 }
4887
4888 IWritableItemDefManager* Server::getWritableItemDefManager()
4889 {
4890         return m_itemdef;
4891 }
4892 IWritableNodeDefManager* Server::getWritableNodeDefManager()
4893 {
4894         return m_nodedef;
4895 }
4896 IWritableCraftDefManager* Server::getWritableCraftDefManager()
4897 {
4898         return m_craftdef;
4899 }
4900
4901 const ModSpec* Server::getModSpec(const std::string &modname)
4902 {
4903         for(std::vector<ModSpec>::iterator i = m_mods.begin();
4904                         i != m_mods.end(); i++){
4905                 const ModSpec &mod = *i;
4906                 if(mod.name == modname)
4907                         return &mod;
4908         }
4909         return NULL;
4910 }
4911 void Server::getModNames(std::list<std::string> &modlist)
4912 {
4913         for(std::vector<ModSpec>::iterator i = m_mods.begin(); i != m_mods.end(); i++)
4914         {
4915                 modlist.push_back(i->name);
4916         }
4917 }
4918 std::string Server::getBuiltinLuaPath()
4919 {
4920         return porting::path_share + DIR_DELIM + "builtin";
4921 }
4922
4923 v3f findSpawnPos(ServerMap &map)
4924 {
4925         //return v3f(50,50,50)*BS;
4926
4927         v3s16 nodepos;
4928
4929 #if 0
4930         nodepos = v2s16(0,0);
4931         groundheight = 20;
4932 #endif
4933
4934 #if 1
4935         s16 water_level = map.getWaterLevel();
4936
4937         // Try to find a good place a few times
4938         for(s32 i=0; i<1000; i++)
4939         {
4940                 s32 range = 1 + i;
4941                 // We're going to try to throw the player to this position
4942                 v2s16 nodepos2d = v2s16(
4943                                 -range + (myrand() % (range * 2)),
4944                                 -range + (myrand() % (range * 2)));
4945
4946                 // Get ground height at point
4947                 s16 groundheight = map.findGroundLevel(nodepos2d);
4948                 if (groundheight <= water_level) // Don't go underwater
4949                         continue;
4950                 if (groundheight > water_level + 6) // Don't go to high places
4951                         continue;
4952
4953                 nodepos = v3s16(nodepos2d.X, groundheight, nodepos2d.Y);
4954                 bool is_good = false;
4955                 s32 air_count = 0;
4956                 for (s32 i = 0; i < 10; i++) {
4957                         v3s16 blockpos = getNodeBlockPos(nodepos);
4958                         map.emergeBlock(blockpos, true);
4959                         content_t c = map.getNodeNoEx(nodepos).getContent();
4960                         if (c == CONTENT_AIR || c == CONTENT_IGNORE) {
4961                                 air_count++;
4962                                 if (air_count >= 2){
4963                                         is_good = true;
4964                                         break;
4965                                 }
4966                         }
4967                         nodepos.Y++;
4968                 }
4969                 if(is_good){
4970                         // Found a good place
4971                         //infostream<<"Searched through "<<i<<" places."<<std::endl;
4972                         break;
4973                 }
4974         }
4975 #endif
4976
4977         return intToFloat(nodepos, BS);
4978 }
4979
4980 PlayerSAO* Server::emergePlayer(const char *name, u16 peer_id)
4981 {
4982         RemotePlayer *player = NULL;
4983         bool newplayer = false;
4984
4985         /*
4986                 Try to get an existing player
4987         */
4988         player = static_cast<RemotePlayer*>(m_env->getPlayer(name));
4989
4990         // If player is already connected, cancel
4991         if(player != NULL && player->peer_id != 0)
4992         {
4993                 infostream<<"emergePlayer(): Player already connected"<<std::endl;
4994                 return NULL;
4995         }
4996
4997         /*
4998                 If player with the wanted peer_id already exists, cancel.
4999         */
5000         if(m_env->getPlayer(peer_id) != NULL)
5001         {
5002                 infostream<<"emergePlayer(): Player with wrong name but same"
5003                                 " peer_id already exists"<<std::endl;
5004                 return NULL;
5005         }
5006
5007         // Load player if it isn't already loaded
5008         if (!player) {
5009                 player = static_cast<RemotePlayer*>(m_env->loadPlayer(name));
5010         }
5011
5012         // Create player if it doesn't exist
5013         if (!player) {
5014                 newplayer = true;
5015                 player = new RemotePlayer(this);
5016                 player->updateName(name);
5017                 /* Set player position */
5018                 infostream<<"Server: Finding spawn place for player \""
5019                                 <<name<<"\""<<std::endl;
5020                 v3f pos = findSpawnPos(m_env->getServerMap());
5021                 player->setPosition(pos);
5022
5023                 /* Add player to environment */
5024                 m_env->addPlayer(player);
5025         }
5026
5027         // Create a new player active object
5028         PlayerSAO *playersao = new PlayerSAO(m_env, player, peer_id,
5029                         getPlayerEffectivePrivs(player->getName()),
5030                         isSingleplayer());
5031
5032         /* Clean up old HUD elements from previous sessions */
5033         player->clearHud();
5034
5035         /* Add object to environment */
5036         m_env->addActiveObject(playersao);
5037
5038         /* Run scripts */
5039         if (newplayer) {
5040                 m_script->on_newplayer(playersao);
5041         }
5042
5043         return playersao;
5044 }
5045
5046 void dedicated_server_loop(Server &server, bool &kill)
5047 {
5048         DSTACK(__FUNCTION_NAME);
5049
5050         verbosestream<<"dedicated_server_loop()"<<std::endl;
5051
5052         IntervalLimiter m_profiler_interval;
5053
5054         for(;;)
5055         {
5056                 float steplen = g_settings->getFloat("dedicated_server_step");
5057                 // This is kind of a hack but can be done like this
5058                 // because server.step() is very light
5059                 {
5060                         ScopeProfiler sp(g_profiler, "dedicated server sleep");
5061                         sleep_ms((int)(steplen*1000.0));
5062                 }
5063                 server.step(steplen);
5064
5065                 if(server.getShutdownRequested() || kill)
5066                 {
5067                         infostream<<"Dedicated server quitting"<<std::endl;
5068 #if USE_CURL
5069                         if(g_settings->getBool("server_announce") == true)
5070                                 ServerList::sendAnnounce("delete");
5071 #endif
5072                         break;
5073                 }
5074
5075                 /*
5076                         Profiler
5077                 */
5078                 float profiler_print_interval =
5079                                 g_settings->getFloat("profiler_print_interval");
5080                 if(profiler_print_interval != 0)
5081                 {
5082                         if(m_profiler_interval.step(steplen, profiler_print_interval))
5083                         {
5084                                 infostream<<"Profiler:"<<std::endl;
5085                                 g_profiler->print(infostream);
5086                                 g_profiler->clear();
5087                         }
5088                 }
5089         }
5090 }
5091
5092