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") == true)
 680                 {
 681                         ServerList::sendAnnounce(!counter ? "start" : "update",
 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() < 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,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,Created);
1324
1325                 // If net_proto_version is set, this client has already been handled
1326                 if(client->getState() > 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(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, 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, 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, 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, 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,InitDone)->serialization_version;
1685         u16 peer_proto_ver = getClient(peer_id,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 "
1736                                 << peer_id << std::endl;
1737                         return;
1738                 }
1739
1740
1741                 if(datasize < 2+8)
1742                         return;
1743
1744                 m_clients.setClientVersion(
1745                                 peer_id,
1746                                 data[2], data[3], data[4],
1747                                 std::string((char*) &data[8],(u16) data[6]));
1748
1749                 m_clients.event(peer_id, SetClientReady);
1750                 m_script->on_joinplayer(playersao);
1751
1752         }
1753         else if(command == TOSERVER_GOTBLOCKS)
1754         {
1755                 if(datasize < 2+1)
1756                         return;
1757
1758                 /*
1759                         [0] u16 command
1760                         [2] u8 count
1761                         [3] v3s16 pos_0
1762                         [3+6] v3s16 pos_1
1763                         ...
1764                 */
1765
1766                 u16 count = data[2];
1767                 for(u16 i=0; i<count; i++)
1768                 {
1769                         if((s16)datasize < 2+1+(i+1)*6)
1770                                 throw con::InvalidIncomingDataException
1771                                         ("GOTBLOCKS length is too short");
1772                         v3s16 p = readV3S16(&data[2+1+i*6]);
1773                         /*infostream<<"Server: GOTBLOCKS ("
1774                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1775                         RemoteClient *client = getClient(peer_id);
1776                         client->GotBlock(p);
1777                 }
1778                 return;
1779         }
1780
1781         if (m_clients.getClientState(peer_id) < Active)
1782         {
1783                 if (command == TOSERVER_PLAYERPOS) return;
1784
1785                 errorstream<<"Got packet command: " << command << " for peer id "
1786                                 << peer_id << " but client isn't active yet. Dropping packet "
1787                                 <<std::endl;
1788                 return;
1789         }
1790
1791         Player *player = m_env->getPlayer(peer_id);
1792         if(player == NULL){
1793                 errorstream<<"Server::ProcessData(): Cancelling: "
1794                                 "No player for peer_id="<<peer_id
1795                                 <<std::endl;
1796                 return;
1797         }
1798
1799         PlayerSAO *playersao = player->getPlayerSAO();
1800         if(playersao == NULL){
1801                 errorstream<<"Server::ProcessData(): Cancelling: "
1802                                 "No player object for peer_id="<<peer_id
1803                                 <<std::endl;
1804                 return;
1805         }
1806
1807         if(command == TOSERVER_PLAYERPOS)
1808         {
1809                 if(datasize < 2+12+12+4+4)
1810                         return;
1811
1812                 u32 start = 0;
1813                 v3s32 ps = readV3S32(&data[start+2]);
1814                 v3s32 ss = readV3S32(&data[start+2+12]);
1815                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
1816                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
1817                 u32 keyPressed = 0;
1818                 if(datasize >= 2+12+12+4+4+4)
1819                         keyPressed = (u32)readU32(&data[2+12+12+4+4]);
1820                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
1821                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
1822                 pitch = wrapDegrees(pitch);
1823                 yaw = wrapDegrees(yaw);
1824
1825                 player->setPosition(position);
1826                 player->setSpeed(speed);
1827                 player->setPitch(pitch);
1828                 player->setYaw(yaw);
1829                 player->keyPressed=keyPressed;
1830                 player->control.up = (bool)(keyPressed&1);
1831                 player->control.down = (bool)(keyPressed&2);
1832                 player->control.left = (bool)(keyPressed&4);
1833                 player->control.right = (bool)(keyPressed&8);
1834                 player->control.jump = (bool)(keyPressed&16);
1835                 player->control.aux1 = (bool)(keyPressed&32);
1836                 player->control.sneak = (bool)(keyPressed&64);
1837                 player->control.LMB = (bool)(keyPressed&128);
1838                 player->control.RMB = (bool)(keyPressed&256);
1839
1840                 bool cheated = playersao->checkMovementCheat();
1841                 if(cheated){
1842                         // Call callbacks
1843                         m_script->on_cheat(playersao, "moved_too_fast");
1844                 }
1845
1846                 /*infostream<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
1847                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
1848                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
1849         }
1850         else if(command == TOSERVER_DELETEDBLOCKS)
1851         {
1852                 if(datasize < 2+1)
1853                         return;
1854
1855                 /*
1856                         [0] u16 command
1857                         [2] u8 count
1858                         [3] v3s16 pos_0
1859                         [3+6] v3s16 pos_1
1860                         ...
1861                 */
1862
1863                 u16 count = data[2];
1864                 for(u16 i=0; i<count; i++)
1865                 {
1866                         if((s16)datasize < 2+1+(i+1)*6)
1867                                 throw con::InvalidIncomingDataException
1868                                         ("DELETEDBLOCKS length is too short");
1869                         v3s16 p = readV3S16(&data[2+1+i*6]);
1870                         /*infostream<<"Server: DELETEDBLOCKS ("
1871                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1872                         RemoteClient *client = getClient(peer_id);
1873                         client->SetBlockNotSent(p);
1874                 }
1875         }
1876         else if(command == TOSERVER_CLICK_OBJECT)
1877         {
1878                 infostream<<"Server: CLICK_OBJECT not supported anymore"<<std::endl;
1879                 return;
1880         }
1881         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
1882         {
1883                 infostream<<"Server: CLICK_ACTIVEOBJECT not supported anymore"<<std::endl;
1884                 return;
1885         }
1886         else if(command == TOSERVER_GROUND_ACTION)
1887         {
1888                 infostream<<"Server: GROUND_ACTION not supported anymore"<<std::endl;
1889                 return;
1890
1891         }
1892         else if(command == TOSERVER_RELEASE)
1893         {
1894                 infostream<<"Server: RELEASE not supported anymore"<<std::endl;
1895                 return;
1896         }
1897         else if(command == TOSERVER_SIGNTEXT)
1898         {
1899                 infostream<<"Server: SIGNTEXT not supported anymore"
1900                                 <<std::endl;
1901                 return;
1902         }
1903         else if(command == TOSERVER_SIGNNODETEXT)
1904         {
1905                 infostream<<"Server: SIGNNODETEXT not supported anymore"
1906                                 <<std::endl;
1907                 return;
1908         }
1909         else if(command == TOSERVER_INVENTORY_ACTION)
1910         {
1911                 // Strip command and create a stream
1912                 std::string datastring((char*)&data[2], datasize-2);
1913                 verbosestream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
1914                 std::istringstream is(datastring, std::ios_base::binary);
1915                 // Create an action
1916                 InventoryAction *a = InventoryAction::deSerialize(is);
1917                 if(a == NULL)
1918                 {
1919                         infostream<<"TOSERVER_INVENTORY_ACTION: "
1920                                         <<"InventoryAction::deSerialize() returned NULL"
1921                                         <<std::endl;
1922                         return;
1923                 }
1924
1925                 // If something goes wrong, this player is to blame
1926                 RollbackScopeActor rollback_scope(m_rollback,
1927                                 std::string("player:")+player->getName());
1928
1929                 /*
1930                         Note: Always set inventory not sent, to repair cases
1931                         where the client made a bad prediction.
1932                 */
1933
1934                 /*
1935                         Handle restrictions and special cases of the move action
1936                 */
1937                 if(a->getType() == IACTION_MOVE)
1938                 {
1939                         IMoveAction *ma = (IMoveAction*)a;
1940
1941                         ma->from_inv.applyCurrentPlayer(player->getName());
1942                         ma->to_inv.applyCurrentPlayer(player->getName());
1943
1944                         setInventoryModified(ma->from_inv);
1945                         setInventoryModified(ma->to_inv);
1946
1947                         bool from_inv_is_current_player =
1948                                 (ma->from_inv.type == InventoryLocation::PLAYER) &&
1949                                 (ma->from_inv.name == player->getName());
1950
1951                         bool to_inv_is_current_player =
1952                                 (ma->to_inv.type == InventoryLocation::PLAYER) &&
1953                                 (ma->to_inv.name == player->getName());
1954
1955                         /*
1956                                 Disable moving items out of craftpreview
1957                         */
1958                         if(ma->from_list == "craftpreview")
1959                         {
1960                                 infostream<<"Ignoring IMoveAction from "
1961                                                 <<(ma->from_inv.dump())<<":"<<ma->from_list
1962                                                 <<" to "<<(ma->to_inv.dump())<<":"<<ma->to_list
1963                                                 <<" because src is "<<ma->from_list<<std::endl;
1964                                 delete a;
1965                                 return;
1966                         }
1967
1968                         /*
1969                                 Disable moving items into craftresult and craftpreview
1970                         */
1971                         if(ma->to_list == "craftpreview" || ma->to_list == "craftresult")
1972                         {
1973                                 infostream<<"Ignoring IMoveAction from "
1974                                                 <<(ma->from_inv.dump())<<":"<<ma->from_list
1975                                                 <<" to "<<(ma->to_inv.dump())<<":"<<ma->to_list
1976                                                 <<" because dst is "<<ma->to_list<<std::endl;
1977                                 delete a;
1978                                 return;
1979                         }
1980
1981                         // Disallow moving items in elsewhere than player's inventory
1982                         // if not allowed to interact
1983                         if(!checkPriv(player->getName(), "interact") &&
1984                                         (!from_inv_is_current_player ||
1985                                         !to_inv_is_current_player))
1986                         {
1987                                 infostream<<"Cannot move outside of player's inventory: "
1988                                                 <<"No interact privilege"<<std::endl;
1989                                 delete a;
1990                                 return;
1991                         }
1992                 }
1993                 /*
1994                         Handle restrictions and special cases of the drop action
1995                 */
1996                 else if(a->getType() == IACTION_DROP)
1997                 {
1998                         IDropAction *da = (IDropAction*)a;
1999
2000                         da->from_inv.applyCurrentPlayer(player->getName());
2001
2002                         setInventoryModified(da->from_inv);
2003
2004                         /*
2005                                 Disable dropping items out of craftpreview
2006                         */
2007                         if(da->from_list == "craftpreview")
2008                         {
2009                                 infostream<<"Ignoring IDropAction from "
2010                                                 <<(da->from_inv.dump())<<":"<<da->from_list
2011                                                 <<" because src is "<<da->from_list<<std::endl;
2012                                 delete a;
2013                                 return;
2014                         }
2015
2016                         // Disallow dropping items if not allowed to interact
2017                         if(!checkPriv(player->getName(), "interact"))
2018                         {
2019                                 delete a;
2020                                 return;
2021                         }
2022                 }
2023                 /*
2024                         Handle restrictions and special cases of the craft action
2025                 */
2026                 else if(a->getType() == IACTION_CRAFT)
2027                 {
2028                         ICraftAction *ca = (ICraftAction*)a;
2029
2030                         ca->craft_inv.applyCurrentPlayer(player->getName());
2031
2032                         setInventoryModified(ca->craft_inv);
2033
2034                         //bool craft_inv_is_current_player =
2035                         //      (ca->craft_inv.type == InventoryLocation::PLAYER) &&
2036                         //      (ca->craft_inv.name == player->getName());
2037
2038                         // Disallow crafting if not allowed to interact
2039                         if(!checkPriv(player->getName(), "interact"))
2040                         {
2041                                 infostream<<"Cannot craft: "
2042                                                 <<"No interact privilege"<<std::endl;
2043                                 delete a;
2044                                 return;
2045                         }
2046                 }
2047
2048                 // Do the action
2049                 a->apply(this, playersao, this);
2050                 // Eat the action
2051                 delete a;
2052         }
2053         else if(command == TOSERVER_CHAT_MESSAGE)
2054         {
2055                 /*
2056                         u16 command
2057                         u16 length
2058                         wstring message
2059                 */
2060                 u8 buf[6];
2061                 std::string datastring((char*)&data[2], datasize-2);
2062                 std::istringstream is(datastring, std::ios_base::binary);
2063
2064                 // Read stuff
2065                 is.read((char*)buf, 2);
2066                 u16 len = readU16(buf);
2067
2068                 std::wstring message;
2069                 for(u16 i=0; i<len; i++)
2070                 {
2071                         is.read((char*)buf, 2);
2072                         message += (wchar_t)readU16(buf);
2073                 }
2074
2075                 // If something goes wrong, this player is to blame
2076                 RollbackScopeActor rollback_scope(m_rollback,
2077                                 std::string("player:")+player->getName());
2078
2079                 // Get player name of this client
2080                 std::wstring name = narrow_to_wide(player->getName());
2081
2082                 // Run script hook
2083                 bool ate = m_script->on_chat_message(player->getName(),
2084                                 wide_to_narrow(message));
2085                 // If script ate the message, don't proceed
2086                 if(ate)
2087                         return;
2088
2089                 // Line to send to players
2090                 std::wstring line;
2091                 // Whether to send to the player that sent the line
2092                 bool send_to_sender_only = false;
2093
2094                 // Commands are implemented in Lua, so only catch invalid
2095                 // commands that were not "eaten" and send an error back
2096                 if(message[0] == L'/')
2097                 {
2098                         message = message.substr(1);
2099                         send_to_sender_only = true;
2100                         if(message.length() == 0)
2101                                 line += L"-!- Empty command";
2102                         else
2103                                 line += L"-!- Invalid command: " + str_split(message, L' ')[0];
2104                 }
2105                 else
2106                 {
2107                         if(checkPriv(player->getName(), "shout")){
2108                                 line += L"<";
2109                                 line += name;
2110                                 line += L"> ";
2111                                 line += message;
2112                         } else {
2113                                 line += L"-!- You don't have permission to shout.";
2114                                 send_to_sender_only = true;
2115                         }
2116                 }
2117
2118                 if(line != L"")
2119                 {
2120                         /*
2121                                 Send the message to sender
2122                         */
2123                         if (send_to_sender_only)
2124                         {
2125                                 SendChatMessage(peer_id, line);
2126                         }
2127                         /*
2128                                 Send the message to others
2129                         */
2130                         else
2131                         {
2132                                 actionstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
2133
2134                                 std::list<u16> clients = m_clients.getClientIDs();
2135
2136                                 for(std::list<u16>::iterator
2137                                         i = clients.begin();
2138                                         i != clients.end(); ++i)
2139                                 {
2140                                         if (*i != peer_id)
2141                                                 SendChatMessage(*i, line);
2142                                 }
2143                         }
2144                 }
2145         }
2146         else if(command == TOSERVER_DAMAGE)
2147         {
2148                 std::string datastring((char*)&data[2], datasize-2);
2149                 std::istringstream is(datastring, std::ios_base::binary);
2150                 u8 damage = readU8(is);
2151
2152                 if(g_settings->getBool("enable_damage"))
2153                 {
2154                         actionstream<<player->getName()<<" damaged by "
2155                                         <<(int)damage<<" hp at "<<PP(player->getPosition()/BS)
2156                                         <<std::endl;
2157
2158                         playersao->setHP(playersao->getHP() - damage);
2159
2160                         if(playersao->getHP() == 0 && playersao->m_hp_not_sent)
2161                                 DiePlayer(peer_id);
2162
2163                         if(playersao->m_hp_not_sent)
2164                                 SendPlayerHP(peer_id);
2165                 }
2166         }
2167         else if(command == TOSERVER_BREATH)
2168         {
2169                 std::string datastring((char*)&data[2], datasize-2);
2170                 std::istringstream is(datastring, std::ios_base::binary);
2171                 u16 breath = readU16(is);
2172                 playersao->setBreath(breath);
2173                 m_script->player_event(playersao,"breath_changed");
2174         }
2175         else if(command == TOSERVER_PASSWORD)
2176         {
2177                 /*
2178                         [0] u16 TOSERVER_PASSWORD
2179                         [2] u8[28] old password
2180                         [30] u8[28] new password
2181                 */
2182
2183                 if(datasize != 2+PASSWORD_SIZE*2)
2184                         return;
2185                 /*char password[PASSWORD_SIZE];
2186                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2187                         password[i] = data[2+i];
2188                 password[PASSWORD_SIZE-1] = 0;*/
2189                 std::string oldpwd;
2190                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2191                 {
2192                         char c = data[2+i];
2193                         if(c == 0)
2194                                 break;
2195                         oldpwd += c;
2196                 }
2197                 std::string newpwd;
2198                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2199                 {
2200                         char c = data[2+PASSWORD_SIZE+i];
2201                         if(c == 0)
2202                                 break;
2203                         newpwd += c;
2204                 }
2205
2206                 if(!base64_is_valid(newpwd)){
2207                         infostream<<"Server: "<<player->getName()<<" supplied invalid password hash"<<std::endl;
2208                         // Wrong old password supplied!!
2209                         SendChatMessage(peer_id, L"Invalid new password hash supplied. Password NOT changed.");
2210                         return;
2211                 }
2212
2213                 infostream<<"Server: Client requests a password change from "
2214                                 <<"'"<<oldpwd<<"' to '"<<newpwd<<"'"<<std::endl;
2215
2216                 std::string playername = player->getName();
2217
2218                 std::string checkpwd;
2219                 m_script->getAuth(playername, &checkpwd, NULL);
2220
2221                 if(oldpwd != checkpwd)
2222                 {
2223                         infostream<<"Server: invalid old password"<<std::endl;
2224                         // Wrong old password supplied!!
2225                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
2226                         return;
2227                 }
2228
2229                 bool success = m_script->setPassword(playername, newpwd);
2230                 if(success){
2231                         actionstream<<player->getName()<<" changes password"<<std::endl;
2232                         SendChatMessage(peer_id, L"Password change successful.");
2233                 } else {
2234                         actionstream<<player->getName()<<" tries to change password but "
2235                                         <<"it fails"<<std::endl;
2236                         SendChatMessage(peer_id, L"Password change failed or inavailable.");
2237                 }
2238         }
2239         else if(command == TOSERVER_PLAYERITEM)
2240         {
2241                 if (datasize < 2+2)
2242                         return;
2243
2244                 u16 item = readU16(&data[2]);
2245                 playersao->setWieldIndex(item);
2246         }
2247         else if(command == TOSERVER_RESPAWN)
2248         {
2249                 if(player->hp != 0 || !g_settings->getBool("enable_damage"))
2250                         return;
2251
2252                 RespawnPlayer(peer_id);
2253
2254                 actionstream<<player->getName()<<" respawns at "
2255                                 <<PP(player->getPosition()/BS)<<std::endl;
2256
2257                 // ActiveObject is added to environment in AsyncRunStep after
2258                 // the previous addition has been succesfully removed
2259         }
2260         else if(command == TOSERVER_INTERACT)
2261         {
2262                 std::string datastring((char*)&data[2], datasize-2);
2263                 std::istringstream is(datastring, std::ios_base::binary);
2264
2265                 /*
2266                         [0] u16 command
2267                         [2] u8 action
2268                         [3] u16 item
2269                         [5] u32 length of the next item
2270                         [9] serialized PointedThing
2271                         actions:
2272                         0: start digging (from undersurface) or use
2273                         1: stop digging (all parameters ignored)
2274                         2: digging completed
2275                         3: place block or item (to abovesurface)
2276                         4: use item
2277                 */
2278                 u8 action = readU8(is);
2279                 u16 item_i = readU16(is);
2280                 std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
2281                 PointedThing pointed;
2282                 pointed.deSerialize(tmp_is);
2283
2284                 verbosestream<<"TOSERVER_INTERACT: action="<<(int)action<<", item="
2285                                 <<item_i<<", pointed="<<pointed.dump()<<std::endl;
2286
2287                 if(player->hp == 0)
2288                 {
2289                         verbosestream<<"TOSERVER_INTERACT: "<<player->getName()
2290                                 <<" tried to interact, but is dead!"<<std::endl;
2291                         return;
2292                 }
2293
2294                 v3f player_pos = playersao->getLastGoodPosition();
2295
2296                 // Update wielded item
2297                 playersao->setWieldIndex(item_i);
2298
2299                 // Get pointed to node (undefined if not POINTEDTYPE_NODE)
2300                 v3s16 p_under = pointed.node_undersurface;
2301                 v3s16 p_above = pointed.node_abovesurface;
2302
2303                 // Get pointed to object (NULL if not POINTEDTYPE_OBJECT)
2304                 ServerActiveObject *pointed_object = NULL;
2305                 if(pointed.type == POINTEDTHING_OBJECT)
2306                 {
2307                         pointed_object = m_env->getActiveObject(pointed.object_id);
2308                         if(pointed_object == NULL)
2309                         {
2310                                 verbosestream<<"TOSERVER_INTERACT: "
2311                                         "pointed object is NULL"<<std::endl;
2312                                 return;
2313                         }
2314
2315                 }
2316
2317                 v3f pointed_pos_under = player_pos;
2318                 v3f pointed_pos_above = player_pos;
2319                 if(pointed.type == POINTEDTHING_NODE)
2320                 {
2321                         pointed_pos_under = intToFloat(p_under, BS);
2322                         pointed_pos_above = intToFloat(p_above, BS);
2323                 }
2324                 else if(pointed.type == POINTEDTHING_OBJECT)
2325                 {
2326                         pointed_pos_under = pointed_object->getBasePosition();
2327                         pointed_pos_above = pointed_pos_under;
2328                 }
2329
2330                 /*
2331                         Check that target is reasonably close
2332                         (only when digging or placing things)
2333                 */
2334                 if(action == 0 || action == 2 || action == 3)
2335                 {
2336                         float d = player_pos.getDistanceFrom(pointed_pos_under);
2337                         float max_d = BS * 14; // Just some large enough value
2338                         if(d > max_d){
2339                                 actionstream<<"Player "<<player->getName()
2340                                                 <<" tried to access "<<pointed.dump()
2341                                                 <<" from too far: "
2342                                                 <<"d="<<d<<", max_d="<<max_d
2343                                                 <<". ignoring."<<std::endl;
2344                                 // Re-send block to revert change on client-side
2345                                 RemoteClient *client = getClient(peer_id);
2346                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2347                                 client->SetBlockNotSent(blockpos);
2348                                 // Call callbacks
2349                                 m_script->on_cheat(playersao, "interacted_too_far");
2350                                 // Do nothing else
2351                                 return;
2352                         }
2353                 }
2354
2355                 /*
2356                         Make sure the player is allowed to do it
2357                 */
2358                 if(!checkPriv(player->getName(), "interact"))
2359                 {
2360                         actionstream<<player->getName()<<" attempted to interact with "
2361                                         <<pointed.dump()<<" without 'interact' privilege"
2362                                         <<std::endl;
2363                         // Re-send block to revert change on client-side
2364                         RemoteClient *client = getClient(peer_id);
2365                         // Digging completed -> under
2366                         if(action == 2){
2367                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2368                                 client->SetBlockNotSent(blockpos);
2369                         }
2370                         // Placement -> above
2371                         if(action == 3){
2372                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
2373                                 client->SetBlockNotSent(blockpos);
2374                         }
2375                         return;
2376                 }
2377
2378                 /*
2379                         If something goes wrong, this player is to blame
2380                 */
2381                 RollbackScopeActor rollback_scope(m_rollback,
2382                                 std::string("player:")+player->getName());
2383
2384                 /*
2385                         0: start digging or punch object
2386                 */
2387                 if(action == 0)
2388                 {
2389                         if(pointed.type == POINTEDTHING_NODE)
2390                         {
2391                                 /*
2392                                         NOTE: This can be used in the future to check if
2393                                         somebody is cheating, by checking the timing.
2394                                 */
2395                                 MapNode n(CONTENT_IGNORE);
2396                                 try
2397                                 {
2398                                         n = m_env->getMap().getNode(p_under);
2399                                 }
2400                                 catch(InvalidPositionException &e)
2401                                 {
2402                                         infostream<<"Server: Not punching: Node not found."
2403                                                         <<" Adding block to emerge queue."
2404                                                         <<std::endl;
2405                                         m_emerge->enqueueBlockEmerge(peer_id, getNodeBlockPos(p_above), false);
2406                                 }
2407                                 if(n.getContent() != CONTENT_IGNORE)
2408                                         m_script->node_on_punch(p_under, n, playersao, pointed);
2409                                 // Cheat prevention
2410                                 playersao->noCheatDigStart(p_under);
2411                         }
2412                         else if(pointed.type == POINTEDTHING_OBJECT)
2413                         {
2414                                 // Skip if object has been removed
2415                                 if(pointed_object->m_removed)
2416                                         return;
2417
2418                                 actionstream<<player->getName()<<" punches object "
2419                                                 <<pointed.object_id<<": "
2420                                                 <<pointed_object->getDescription()<<std::endl;
2421
2422                                 ItemStack punchitem = playersao->getWieldedItem();
2423                                 ToolCapabilities toolcap =
2424                                                 punchitem.getToolCapabilities(m_itemdef);
2425                                 v3f dir = (pointed_object->getBasePosition() -
2426                                                 (player->getPosition() + player->getEyeOffset())
2427                                                         ).normalize();
2428                                 float time_from_last_punch =
2429                                         playersao->resetTimeFromLastPunch();
2430                                 pointed_object->punch(dir, &toolcap, playersao,
2431                                                 time_from_last_punch);
2432                         }
2433
2434                 } // action == 0
2435
2436                 /*
2437                         1: stop digging
2438                 */
2439                 else if(action == 1)
2440                 {
2441                 } // action == 1
2442
2443                 /*
2444                         2: Digging completed
2445                 */
2446                 else if(action == 2)
2447                 {
2448                         // Only digging of nodes
2449                         if(pointed.type == POINTEDTHING_NODE)
2450                         {
2451                                 MapNode n(CONTENT_IGNORE);
2452                                 try
2453                                 {
2454                                         n = m_env->getMap().getNode(p_under);
2455                                 }
2456                                 catch(InvalidPositionException &e)
2457                                 {
2458                                         infostream<<"Server: Not finishing digging: Node not found."
2459                                                         <<" Adding block to emerge queue."
2460                                                         <<std::endl;
2461                                         m_emerge->enqueueBlockEmerge(peer_id, getNodeBlockPos(p_above), false);
2462                                 }
2463
2464                                 /* Cheat prevention */
2465                                 bool is_valid_dig = true;
2466                                 if(!isSingleplayer() && !g_settings->getBool("disable_anticheat"))
2467                                 {
2468                                         v3s16 nocheat_p = playersao->getNoCheatDigPos();
2469                                         float nocheat_t = playersao->getNoCheatDigTime();
2470                                         playersao->noCheatDigEnd();
2471                                         // If player didn't start digging this, ignore dig
2472                                         if(nocheat_p != p_under){
2473                                                 infostream<<"Server: NoCheat: "<<player->getName()
2474                                                                 <<" started digging "
2475                                                                 <<PP(nocheat_p)<<" and completed digging "
2476                                                                 <<PP(p_under)<<"; not digging."<<std::endl;
2477                                                 is_valid_dig = false;
2478                                                 // Call callbacks
2479                                                 m_script->on_cheat(playersao, "finished_unknown_dig");
2480                                         }
2481                                         // Get player's wielded item
2482                                         ItemStack playeritem;
2483                                         InventoryList *mlist = playersao->getInventory()->getList("main");
2484                                         if(mlist != NULL)
2485                                                 playeritem = mlist->getItem(playersao->getWieldIndex());
2486                                         ToolCapabilities playeritem_toolcap =
2487                                                         playeritem.getToolCapabilities(m_itemdef);
2488                                         // Get diggability and expected digging time
2489                                         DigParams params = getDigParams(m_nodedef->get(n).groups,
2490                                                         &playeritem_toolcap);
2491                                         // If can't dig, try hand
2492                                         if(!params.diggable){
2493                                                 const ItemDefinition &hand = m_itemdef->get("");
2494                                                 const ToolCapabilities *tp = hand.tool_capabilities;
2495                                                 if(tp)
2496                                                         params = getDigParams(m_nodedef->get(n).groups, tp);
2497                                         }
2498                                         // If can't dig, ignore dig
2499                                         if(!params.diggable){
2500                                                 infostream<<"Server: NoCheat: "<<player->getName()
2501                                                                 <<" completed digging "<<PP(p_under)
2502                                                                 <<", which is not diggable with tool. not digging."
2503                                                                 <<std::endl;
2504                                                 is_valid_dig = false;
2505                                                 // Call callbacks
2506                                                 m_script->on_cheat(playersao, "dug_unbreakable");
2507                                         }
2508                                         // Check digging time
2509                                         // If already invalidated, we don't have to
2510                                         if(!is_valid_dig){
2511                                                 // Well not our problem then
2512                                         }
2513                                         // Clean and long dig
2514                                         else if(params.time > 2.0 && nocheat_t * 1.2 > params.time){
2515                                                 // All is good, but grab time from pool; don't care if
2516                                                 // it's actually available
2517                                                 playersao->getDigPool().grab(params.time);
2518                                         }
2519                                         // Short or laggy dig
2520                                         // Try getting the time from pool
2521                                         else if(playersao->getDigPool().grab(params.time)){
2522                                                 // All is good
2523                                         }
2524                                         // Dig not possible
2525                                         else{
2526                                                 infostream<<"Server: NoCheat: "<<player->getName()
2527                                                                 <<" completed digging "<<PP(p_under)
2528                                                                 <<"too fast; not digging."<<std::endl;
2529                                                 is_valid_dig = false;
2530                                                 // Call callbacks
2531                                                 m_script->on_cheat(playersao, "dug_too_fast");
2532                                         }
2533                                 }
2534
2535                                 /* Actually dig node */
2536
2537                                 if(is_valid_dig && n.getContent() != CONTENT_IGNORE)
2538                                         m_script->node_on_dig(p_under, n, playersao);
2539
2540                                 // Send unusual result (that is, node not being removed)
2541                                 if(m_env->getMap().getNodeNoEx(p_under).getContent() != CONTENT_AIR)
2542                                 {
2543                                         // Re-send block to revert change on client-side
2544                                         RemoteClient *client = getClient(peer_id);
2545                                         v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2546                                         client->SetBlockNotSent(blockpos);
2547                                 }
2548                         }
2549                 } // action == 2
2550
2551                 /*
2552                         3: place block or right-click object
2553                 */
2554                 else if(action == 3)
2555                 {
2556                         ItemStack item = playersao->getWieldedItem();
2557
2558                         // Reset build time counter
2559                         if(pointed.type == POINTEDTHING_NODE &&
2560                                         item.getDefinition(m_itemdef).type == ITEM_NODE)
2561                                 getClient(peer_id)->m_time_from_building = 0.0;
2562
2563                         if(pointed.type == POINTEDTHING_OBJECT)
2564                         {
2565                                 // Right click object
2566
2567                                 // Skip if object has been removed
2568                                 if(pointed_object->m_removed)
2569                                         return;
2570
2571                                 actionstream<<player->getName()<<" right-clicks object "
2572                                                 <<pointed.object_id<<": "
2573                                                 <<pointed_object->getDescription()<<std::endl;
2574
2575                                 // Do stuff
2576                                 pointed_object->rightClick(playersao);
2577                         }
2578                         else if(m_script->item_OnPlace(
2579                                         item, playersao, pointed))
2580                         {
2581                                 // Placement was handled in lua
2582
2583                                 // Apply returned ItemStack
2584                                 playersao->setWieldedItem(item);
2585                         }
2586
2587                         // If item has node placement prediction, always send the
2588                         // blocks to make sure the client knows what exactly happened
2589                         if(item.getDefinition(m_itemdef).node_placement_prediction != ""){
2590                                 RemoteClient *client = getClient(peer_id);
2591                                 v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
2592                                 client->SetBlockNotSent(blockpos);
2593                                 v3s16 blockpos2 = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
2594                                 if(blockpos2 != blockpos){
2595                                         client->SetBlockNotSent(blockpos2);
2596                                 }
2597                         }
2598                 } // action == 3
2599
2600                 /*
2601                         4: use
2602                 */
2603                 else if(action == 4)
2604                 {
2605                         ItemStack item = playersao->getWieldedItem();
2606
2607                         actionstream<<player->getName()<<" uses "<<item.name
2608                                         <<", pointing at "<<pointed.dump()<<std::endl;
2609
2610                         if(m_script->item_OnUse(
2611                                         item, playersao, pointed))
2612                         {
2613                                 // Apply returned ItemStack
2614                                 playersao->setWieldedItem(item);
2615                         }
2616
2617                 } // action == 4
2618
2619
2620                 /*
2621                         Catch invalid actions
2622                 */
2623                 else
2624                 {
2625                         infostream<<"WARNING: Server: Invalid action "
2626                                         <<action<<std::endl;
2627                 }
2628         }
2629         else if(command == TOSERVER_REMOVED_SOUNDS)
2630         {
2631                 std::string datastring((char*)&data[2], datasize-2);
2632                 std::istringstream is(datastring, std::ios_base::binary);
2633
2634                 int num = readU16(is);
2635                 for(int k=0; k<num; k++){
2636                         s32 id = readS32(is);
2637                         std::map<s32, ServerPlayingSound>::iterator i =
2638                                         m_playing_sounds.find(id);
2639                         if(i == m_playing_sounds.end())
2640                                 continue;
2641                         ServerPlayingSound &psound = i->second;
2642                         psound.clients.erase(peer_id);
2643                         if(psound.clients.size() == 0)
2644                                 m_playing_sounds.erase(i++);
2645                 }
2646         }
2647         else if(command == TOSERVER_NODEMETA_FIELDS)
2648         {
2649                 std::string datastring((char*)&data[2], datasize-2);
2650                 std::istringstream is(datastring, std::ios_base::binary);
2651
2652                 v3s16 p = readV3S16(is);
2653                 std::string formname = deSerializeString(is);
2654                 int num = readU16(is);
2655                 std::map<std::string, std::string> fields;
2656                 for(int k=0; k<num; k++){
2657                         std::string fieldname = deSerializeString(is);
2658                         std::string fieldvalue = deSerializeLongString(is);
2659                         fields[fieldname] = fieldvalue;
2660                 }
2661
2662                 // If something goes wrong, this player is to blame
2663                 RollbackScopeActor rollback_scope(m_rollback,
2664                                 std::string("player:")+player->getName());
2665
2666                 // Check the target node for rollback data; leave others unnoticed
2667                 RollbackNode rn_old(&m_env->getMap(), p, this);
2668
2669                 m_script->node_on_receive_fields(p, formname, fields,playersao);
2670
2671                 // Report rollback data
2672                 RollbackNode rn_new(&m_env->getMap(), p, this);
2673                 if(rollback() && rn_new != rn_old){
2674                         RollbackAction action;
2675                         action.setSetNode(p, rn_old, rn_new);
2676                         rollback()->reportAction(action);
2677                 }
2678         }
2679         else if(command == TOSERVER_INVENTORY_FIELDS)
2680         {
2681                 std::string datastring((char*)&data[2], datasize-2);
2682                 std::istringstream is(datastring, std::ios_base::binary);
2683
2684                 std::string formname = deSerializeString(is);
2685                 int num = readU16(is);
2686                 std::map<std::string, std::string> fields;
2687                 for(int k=0; k<num; k++){
2688                         std::string fieldname = deSerializeString(is);
2689                         std::string fieldvalue = deSerializeLongString(is);
2690                         fields[fieldname] = fieldvalue;
2691                 }
2692
2693                 m_script->on_playerReceiveFields(playersao, formname, fields);
2694         }
2695         else
2696         {
2697                 infostream<<"Server::ProcessData(): Ignoring "
2698                                 "unknown command "<<command<<std::endl;
2699         }
2700
2701         } //try
2702         catch(SendFailedException &e)
2703         {
2704                 errorstream<<"Server::ProcessData(): SendFailedException: "
2705                                 <<"what="<<e.what()
2706                                 <<std::endl;
2707         }
2708 }
2709
2710 void Server::setTimeOfDay(u32 time)
2711 {
2712         m_env->setTimeOfDay(time);
2713         m_time_of_day_send_timer = 0;
2714 }
2715
2716 void Server::onMapEditEvent(MapEditEvent *event)
2717 {
2718         //infostream<<"Server::onMapEditEvent()"<<std::endl;
2719         if(m_ignore_map_edit_events)
2720                 return;
2721         if(m_ignore_map_edit_events_area.contains(event->getArea()))
2722                 return;
2723         MapEditEvent *e = event->clone();
2724         m_unsent_map_edit_queue.push_back(e);
2725 }
2726
2727 Inventory* Server::getInventory(const InventoryLocation &loc)
2728 {
2729         switch(loc.type){
2730         case InventoryLocation::UNDEFINED:
2731         {}
2732         break;
2733         case InventoryLocation::CURRENT_PLAYER:
2734         {}
2735         break;
2736         case InventoryLocation::PLAYER:
2737         {
2738                 Player *player = m_env->getPlayer(loc.name.c_str());
2739                 if(!player)
2740                         return NULL;
2741                 PlayerSAO *playersao = player->getPlayerSAO();
2742                 if(!playersao)
2743                         return NULL;
2744                 return playersao->getInventory();
2745         }
2746         break;
2747         case InventoryLocation::NODEMETA:
2748         {
2749                 NodeMetadata *meta = m_env->getMap().getNodeMetadata(loc.p);
2750                 if(!meta)
2751                         return NULL;
2752                 return meta->getInventory();
2753         }
2754         break;
2755         case InventoryLocation::DETACHED:
2756         {
2757                 if(m_detached_inventories.count(loc.name) == 0)
2758                         return NULL;
2759                 return m_detached_inventories[loc.name];
2760         }
2761         break;
2762         default:
2763                 assert(0);
2764         }
2765         return NULL;
2766 }
2767 void Server::setInventoryModified(const InventoryLocation &loc)
2768 {
2769         switch(loc.type){
2770         case InventoryLocation::UNDEFINED:
2771         {}
2772         break;
2773         case InventoryLocation::PLAYER:
2774         {
2775                 Player *player = m_env->getPlayer(loc.name.c_str());
2776                 if(!player)
2777                         return;
2778                 PlayerSAO *playersao = player->getPlayerSAO();
2779                 if(!playersao)
2780                         return;
2781                 playersao->m_inventory_not_sent = true;
2782                 playersao->m_wielded_item_not_sent = true;
2783         }
2784         break;
2785         case InventoryLocation::NODEMETA:
2786         {
2787                 v3s16 blockpos = getNodeBlockPos(loc.p);
2788
2789                 MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(blockpos);
2790                 if(block)
2791                         block->raiseModified(MOD_STATE_WRITE_NEEDED);
2792
2793                 setBlockNotSent(blockpos);
2794         }
2795         break;
2796         case InventoryLocation::DETACHED:
2797         {
2798                 sendDetachedInventory(loc.name,PEER_ID_INEXISTENT);
2799         }
2800         break;
2801         default:
2802                 assert(0);
2803         }
2804 }
2805
2806 void Server::SetBlocksNotSent(std::map<v3s16, MapBlock *>& block)
2807 {
2808         std::list<u16> clients = m_clients.getClientIDs();
2809         m_clients.Lock();
2810         // Set the modified blocks unsent for all the clients
2811         for (std::list<u16>::iterator
2812                  i = clients.begin();
2813                  i != clients.end(); ++i) {
2814                         RemoteClient *client = m_clients.lockedGetClientNoEx(*i);
2815                         if (client != NULL)
2816                                 client->SetBlocksNotSent(block);
2817                 }
2818         m_clients.Unlock();
2819 }
2820
2821 void Server::peerAdded(con::Peer *peer)
2822 {
2823         DSTACK(__FUNCTION_NAME);
2824         verbosestream<<"Server::peerAdded(): peer->id="
2825                         <<peer->id<<std::endl;
2826
2827         con::PeerChange c;
2828         c.type = con::PEER_ADDED;
2829         c.peer_id = peer->id;
2830         c.timeout = false;
2831         m_peer_change_queue.push_back(c);
2832 }
2833
2834 void Server::deletingPeer(con::Peer *peer, bool timeout)
2835 {
2836         DSTACK(__FUNCTION_NAME);
2837         verbosestream<<"Server::deletingPeer(): peer->id="
2838                         <<peer->id<<", timeout="<<timeout<<std::endl;
2839
2840         m_clients.event(peer->id,Disconnect);
2841         con::PeerChange c;
2842         c.type = con::PEER_REMOVED;
2843         c.peer_id = peer->id;
2844         c.timeout = timeout;
2845         m_peer_change_queue.push_back(c);
2846 }
2847
2848 bool Server::getClientConInfo(u16 peer_id, con::rtt_stat_type type, float* retval)
2849 {
2850         *retval = m_con.getPeerStat(peer_id,type);
2851         if (*retval == -1) return false;
2852         return true;
2853 }
2854
2855 bool Server::getClientInfo(
2856                 u16          peer_id,
2857                 ClientState* state,
2858                 u32*         uptime,
2859                 u8*          ser_vers,
2860                 u16*         prot_vers,
2861                 u8*          major,
2862                 u8*          minor,
2863                 u8*          patch,
2864                 std::string* vers_string
2865         )
2866 {
2867         *state = m_clients.getClientState(peer_id);
2868         m_clients.Lock();
2869         RemoteClient* client = m_clients.lockedGetClientNoEx(peer_id,Invalid);
2870
2871         if (client == NULL) {
2872                 m_clients.Unlock();
2873                 return false;
2874                 }
2875
2876         *uptime = client->uptime();
2877         *ser_vers = client->serialization_version;
2878         *prot_vers = client->net_proto_version;
2879
2880         *major = client->getMajor();
2881         *minor = client->getMinor();
2882         *patch = client->getPatch();
2883         *vers_string = client->getPatch();
2884
2885         m_clients.Unlock();
2886
2887         return true;
2888 }
2889
2890 void Server::handlePeerChanges()
2891 {
2892         while(m_peer_change_queue.size() > 0)
2893         {
2894                 con::PeerChange c = m_peer_change_queue.pop_front();
2895
2896                 verbosestream<<"Server: Handling peer change: "
2897                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
2898                                 <<std::endl;
2899
2900                 switch(c.type)
2901                 {
2902                 case con::PEER_ADDED:
2903                         m_clients.CreateClient(c.peer_id);
2904                         break;
2905
2906                 case con::PEER_REMOVED:
2907                         DeleteClient(c.peer_id, c.timeout?CDR_TIMEOUT:CDR_LEAVE);
2908                         break;
2909
2910                 default:
2911                         assert("Invalid peer change event received!" == 0);
2912                         break;
2913                 }
2914         }
2915 }
2916
2917 void Server::SendMovement(u16 peer_id)
2918 {
2919         DSTACK(__FUNCTION_NAME);
2920         std::ostringstream os(std::ios_base::binary);
2921
2922         writeU16(os, TOCLIENT_MOVEMENT);
2923         writeF1000(os, g_settings->getFloat("movement_acceleration_default"));
2924         writeF1000(os, g_settings->getFloat("movement_acceleration_air"));
2925         writeF1000(os, g_settings->getFloat("movement_acceleration_fast"));
2926         writeF1000(os, g_settings->getFloat("movement_speed_walk"));
2927         writeF1000(os, g_settings->getFloat("movement_speed_crouch"));
2928         writeF1000(os, g_settings->getFloat("movement_speed_fast"));
2929         writeF1000(os, g_settings->getFloat("movement_speed_climb"));
2930         writeF1000(os, g_settings->getFloat("movement_speed_jump"));
2931         writeF1000(os, g_settings->getFloat("movement_liquid_fluidity"));
2932         writeF1000(os, g_settings->getFloat("movement_liquid_fluidity_smooth"));
2933         writeF1000(os, g_settings->getFloat("movement_liquid_sink"));
2934         writeF1000(os, g_settings->getFloat("movement_gravity"));
2935
2936         // Make data buffer
2937         std::string s = os.str();
2938         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2939         // Send as reliable
2940         m_clients.send(peer_id, 0, data, true);
2941 }
2942
2943 void Server::SendHP(u16 peer_id, u8 hp)
2944 {
2945         DSTACK(__FUNCTION_NAME);
2946         std::ostringstream os(std::ios_base::binary);
2947
2948         writeU16(os, TOCLIENT_HP);
2949         writeU8(os, hp);
2950
2951         // Make data buffer
2952         std::string s = os.str();
2953         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2954         // Send as reliable
2955         m_clients.send(peer_id, 0, data, true);
2956 }
2957
2958 void Server::SendBreath(u16 peer_id, u16 breath)
2959 {
2960         DSTACK(__FUNCTION_NAME);
2961         std::ostringstream os(std::ios_base::binary);
2962
2963         writeU16(os, TOCLIENT_BREATH);
2964         writeU16(os, breath);
2965
2966         // Make data buffer
2967         std::string s = os.str();
2968         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2969         // Send as reliable
2970         m_clients.send(peer_id, 0, data, true);
2971 }
2972
2973 void Server::SendAccessDenied(u16 peer_id,const std::wstring &reason)
2974 {
2975         DSTACK(__FUNCTION_NAME);
2976         std::ostringstream os(std::ios_base::binary);
2977
2978         writeU16(os, TOCLIENT_ACCESS_DENIED);
2979         os<<serializeWideString(reason);
2980
2981         // Make data buffer
2982         std::string s = os.str();
2983         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
2984         // Send as reliable
2985         m_clients.send(peer_id, 0, data, true);
2986 }
2987
2988 void Server::SendDeathscreen(u16 peer_id,bool set_camera_point_target,
2989                 v3f camera_point_target)
2990 {
2991         DSTACK(__FUNCTION_NAME);
2992         std::ostringstream os(std::ios_base::binary);
2993
2994         writeU16(os, TOCLIENT_DEATHSCREEN);
2995         writeU8(os, set_camera_point_target);
2996         writeV3F1000(os, camera_point_target);
2997
2998         // Make data buffer
2999         std::string s = os.str();
3000         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3001         // Send as reliable
3002         m_clients.send(peer_id, 0, data, true);
3003 }
3004
3005 void Server::SendItemDef(u16 peer_id,
3006                 IItemDefManager *itemdef, u16 protocol_version)
3007 {
3008         DSTACK(__FUNCTION_NAME);
3009         std::ostringstream os(std::ios_base::binary);
3010
3011         /*
3012                 u16 command
3013                 u32 length of the next item
3014                 zlib-compressed serialized ItemDefManager
3015         */
3016         writeU16(os, TOCLIENT_ITEMDEF);
3017         std::ostringstream tmp_os(std::ios::binary);
3018         itemdef->serialize(tmp_os, protocol_version);
3019         std::ostringstream tmp_os2(std::ios::binary);
3020         compressZlib(tmp_os.str(), tmp_os2);
3021         os<<serializeLongString(tmp_os2.str());
3022
3023         // Make data buffer
3024         std::string s = os.str();
3025         verbosestream<<"Server: Sending item definitions to id("<<peer_id
3026                         <<"): size="<<s.size()<<std::endl;
3027         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3028         // Send as reliable
3029         m_clients.send(peer_id, 0, data, true);
3030 }
3031
3032 void Server::SendNodeDef(u16 peer_id,
3033                 INodeDefManager *nodedef, u16 protocol_version)
3034 {
3035         DSTACK(__FUNCTION_NAME);
3036         std::ostringstream os(std::ios_base::binary);
3037
3038         /*
3039                 u16 command
3040                 u32 length of the next item
3041                 zlib-compressed serialized NodeDefManager
3042         */
3043         writeU16(os, TOCLIENT_NODEDEF);
3044         std::ostringstream tmp_os(std::ios::binary);
3045         nodedef->serialize(tmp_os, protocol_version);
3046         std::ostringstream tmp_os2(std::ios::binary);
3047         compressZlib(tmp_os.str(), tmp_os2);
3048         os<<serializeLongString(tmp_os2.str());
3049
3050         // Make data buffer
3051         std::string s = os.str();
3052         verbosestream<<"Server: Sending node definitions to id("<<peer_id
3053                         <<"): size="<<s.size()<<std::endl;
3054         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3055         // Send as reliable
3056         m_clients.send(peer_id, 0, data, true);
3057 }
3058
3059 /*
3060         Non-static send methods
3061 */
3062
3063 void Server::SendInventory(u16 peer_id)
3064 {
3065         DSTACK(__FUNCTION_NAME);
3066
3067         PlayerSAO *playersao = getPlayerSAO(peer_id);
3068         assert(playersao);
3069
3070         playersao->m_inventory_not_sent = false;
3071
3072         /*
3073                 Serialize it
3074         */
3075
3076         std::ostringstream os;
3077         playersao->getInventory()->serialize(os);
3078
3079         std::string s = os.str();
3080
3081         SharedBuffer<u8> data(s.size()+2);
3082         writeU16(&data[0], TOCLIENT_INVENTORY);
3083         memcpy(&data[2], s.c_str(), s.size());
3084
3085         // Send as reliable
3086         m_clients.send(peer_id, 0, data, true);
3087 }
3088
3089 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3090 {
3091         DSTACK(__FUNCTION_NAME);
3092
3093         std::ostringstream os(std::ios_base::binary);
3094         u8 buf[12];
3095
3096         // Write command
3097         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3098         os.write((char*)buf, 2);
3099
3100         // Write length
3101         writeU16(buf, message.size());
3102         os.write((char*)buf, 2);
3103
3104         // Write string
3105         for(u32 i=0; i<message.size(); i++)
3106         {
3107                 u16 w = message[i];
3108                 writeU16(buf, w);
3109                 os.write((char*)buf, 2);
3110         }
3111
3112         // Make data buffer
3113         std::string s = os.str();
3114         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3115
3116         if (peer_id != PEER_ID_INEXISTENT)
3117         {
3118                 // Send as reliable
3119                 m_clients.send(peer_id, 0, data, true);
3120         }
3121         else
3122         {
3123                 m_clients.sendToAll(0,data,true);
3124         }
3125 }
3126
3127 void Server::SendShowFormspecMessage(u16 peer_id, const std::string &formspec,
3128                                      const std::string &formname)
3129 {
3130         DSTACK(__FUNCTION_NAME);
3131
3132         std::ostringstream os(std::ios_base::binary);
3133         u8 buf[12];
3134
3135         // Write command
3136         writeU16(buf, TOCLIENT_SHOW_FORMSPEC);
3137         os.write((char*)buf, 2);
3138         os<<serializeLongString(formspec);
3139         os<<serializeString(formname);
3140
3141         // Make data buffer
3142         std::string s = os.str();
3143         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3144         // Send as reliable
3145         m_clients.send(peer_id, 0, data, true);
3146 }
3147
3148 // Spawns a particle on peer with peer_id
3149 void Server::SendSpawnParticle(u16 peer_id, v3f pos, v3f velocity, v3f acceleration,
3150                                 float expirationtime, float size, bool collisiondetection,
3151                                 bool vertical, std::string texture)
3152 {
3153         DSTACK(__FUNCTION_NAME);
3154
3155         std::ostringstream os(std::ios_base::binary);
3156         writeU16(os, TOCLIENT_SPAWN_PARTICLE);
3157         writeV3F1000(os, pos);
3158         writeV3F1000(os, velocity);
3159         writeV3F1000(os, acceleration);
3160         writeF1000(os, expirationtime);
3161         writeF1000(os, size);
3162         writeU8(os,  collisiondetection);
3163         os<<serializeLongString(texture);
3164         writeU8(os, vertical);
3165
3166         // Make data buffer
3167         std::string s = os.str();
3168         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3169
3170         if (peer_id != PEER_ID_INEXISTENT)
3171         {
3172         // Send as reliable
3173                 m_clients.send(peer_id, 0, data, true);
3174         }
3175         else
3176         {
3177                 m_clients.sendToAll(0,data,true);
3178         }
3179 }
3180
3181 // Adds a ParticleSpawner on peer with peer_id
3182 void Server::SendAddParticleSpawner(u16 peer_id, u16 amount, float spawntime, v3f minpos, v3f maxpos,
3183         v3f minvel, v3f maxvel, v3f minacc, v3f maxacc, float minexptime, float maxexptime,
3184         float minsize, float maxsize, bool collisiondetection, bool vertical, std::string texture, u32 id)
3185 {
3186         DSTACK(__FUNCTION_NAME);
3187
3188         std::ostringstream os(std::ios_base::binary);
3189         writeU16(os, TOCLIENT_ADD_PARTICLESPAWNER);
3190
3191         writeU16(os, amount);
3192         writeF1000(os, spawntime);
3193         writeV3F1000(os, minpos);
3194         writeV3F1000(os, maxpos);
3195         writeV3F1000(os, minvel);
3196         writeV3F1000(os, maxvel);
3197         writeV3F1000(os, minacc);
3198         writeV3F1000(os, maxacc);
3199         writeF1000(os, minexptime);
3200         writeF1000(os, maxexptime);
3201         writeF1000(os, minsize);
3202         writeF1000(os, maxsize);
3203         writeU8(os,  collisiondetection);
3204         os<<serializeLongString(texture);
3205         writeU32(os, id);
3206         writeU8(os, vertical);
3207
3208         // Make data buffer
3209         std::string s = os.str();
3210         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3211
3212         if (peer_id != PEER_ID_INEXISTENT)
3213         {
3214                 // Send as reliable
3215                 m_clients.send(peer_id, 0, data, true);
3216         }
3217         else {
3218                 m_clients.sendToAll(0,data,true);
3219         }
3220 }
3221
3222 void Server::SendDeleteParticleSpawner(u16 peer_id, u32 id)
3223 {
3224         DSTACK(__FUNCTION_NAME);
3225
3226         std::ostringstream os(std::ios_base::binary);
3227         writeU16(os, TOCLIENT_DELETE_PARTICLESPAWNER);
3228
3229         writeU16(os, id);
3230
3231         // Make data buffer
3232         std::string s = os.str();
3233         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3234
3235         if (peer_id != PEER_ID_INEXISTENT) {
3236                 // Send as reliable
3237                 m_clients.send(peer_id, 0, data, true);
3238         }
3239         else {
3240                 m_clients.sendToAll(0,data,true);
3241         }
3242
3243 }
3244
3245 void Server::SendHUDAdd(u16 peer_id, u32 id, HudElement *form)
3246 {
3247         std::ostringstream os(std::ios_base::binary);
3248
3249         // Write command
3250         writeU16(os, TOCLIENT_HUDADD);
3251         writeU32(os, id);
3252         writeU8(os, (u8)form->type);
3253         writeV2F1000(os, form->pos);
3254         os << serializeString(form->name);
3255         writeV2F1000(os, form->scale);
3256         os << serializeString(form->text);
3257         writeU32(os, form->number);
3258         writeU32(os, form->item);
3259         writeU32(os, form->dir);
3260         writeV2F1000(os, form->align);
3261         writeV2F1000(os, form->offset);
3262         writeV3F1000(os, form->world_pos);
3263         writeV2S32(os,form->size);
3264
3265         // Make data buffer
3266         std::string s = os.str();
3267         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3268         // Send as reliable
3269         m_clients.send(peer_id, 1, data, true);
3270 }
3271
3272 void Server::SendHUDRemove(u16 peer_id, u32 id)
3273 {
3274         std::ostringstream os(std::ios_base::binary);
3275
3276         // Write command
3277         writeU16(os, TOCLIENT_HUDRM);
3278         writeU32(os, id);
3279
3280         // Make data buffer
3281         std::string s = os.str();
3282         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3283         // Send as reliable
3284
3285         m_clients.send(peer_id, 1, data, true);
3286 }
3287
3288 void Server::SendHUDChange(u16 peer_id, u32 id, HudElementStat stat, void *value)
3289 {
3290         std::ostringstream os(std::ios_base::binary);
3291
3292         // Write command
3293         writeU16(os, TOCLIENT_HUDCHANGE);
3294         writeU32(os, id);
3295         writeU8(os, (u8)stat);
3296         switch (stat) {
3297                 case HUD_STAT_POS:
3298                 case HUD_STAT_SCALE:
3299                 case HUD_STAT_ALIGN:
3300                 case HUD_STAT_OFFSET:
3301                         writeV2F1000(os, *(v2f *)value);
3302                         break;
3303                 case HUD_STAT_NAME:
3304                 case HUD_STAT_TEXT:
3305                         os << serializeString(*(std::string *)value);
3306                         break;
3307                 case HUD_STAT_WORLD_POS:
3308                         writeV3F1000(os, *(v3f *)value);
3309                         break;
3310                 case HUD_STAT_SIZE:
3311                         writeV2S32(os,*(v2s32 *)value);
3312                         break;
3313                 case HUD_STAT_NUMBER:
3314                 case HUD_STAT_ITEM:
3315                 case HUD_STAT_DIR:
3316                 default:
3317                         writeU32(os, *(u32 *)value);
3318                         break;
3319         }
3320
3321         // Make data buffer
3322         std::string s = os.str();
3323         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3324         // Send as reliable
3325         m_clients.send(peer_id, 0, data, true);
3326 }
3327
3328 void Server::SendHUDSetFlags(u16 peer_id, u32 flags, u32 mask)
3329 {
3330         std::ostringstream os(std::ios_base::binary);
3331
3332         // Write command
3333         writeU16(os, TOCLIENT_HUD_SET_FLAGS);
3334
3335         //////////////////////////// compatibility code to be removed //////////////
3336         flags &= ~(HUD_FLAG_HEALTHBAR_VISIBLE | HUD_FLAG_BREATHBAR_VISIBLE);
3337         ////////////////////////////////////////////////////////////////////////////
3338         writeU32(os, flags);
3339         writeU32(os, mask);
3340
3341         // Make data buffer
3342         std::string s = os.str();
3343         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3344         // Send as reliable
3345         m_clients.send(peer_id, 0, data, true);
3346 }
3347
3348 void Server::SendHUDSetParam(u16 peer_id, u16 param, const std::string &value)
3349 {
3350         std::ostringstream os(std::ios_base::binary);
3351
3352         // Write command
3353         writeU16(os, TOCLIENT_HUD_SET_PARAM);
3354         writeU16(os, param);
3355         os<<serializeString(value);
3356
3357         // Make data buffer
3358         std::string s = os.str();
3359         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3360         // Send as reliable
3361         m_clients.send(peer_id, 0, data, true);
3362 }
3363
3364 void Server::SendSetSky(u16 peer_id, const video::SColor &bgcolor,
3365                 const std::string &type, const std::vector<std::string> &params)
3366 {
3367         std::ostringstream os(std::ios_base::binary);
3368
3369         // Write command
3370         writeU16(os, TOCLIENT_SET_SKY);
3371         writeARGB8(os, bgcolor);
3372         os<<serializeString(type);
3373         writeU16(os, params.size());
3374         for(size_t i=0; i<params.size(); i++)
3375                 os<<serializeString(params[i]);
3376
3377         // Make data buffer
3378         std::string s = os.str();
3379         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3380         // Send as reliable
3381         m_clients.send(peer_id, 0, data, true);
3382 }
3383
3384 void Server::SendOverrideDayNightRatio(u16 peer_id, bool do_override,
3385                 float ratio)
3386 {
3387         std::ostringstream os(std::ios_base::binary);
3388
3389         // Write command
3390         writeU16(os, TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO);
3391         writeU8(os, do_override);
3392         writeU16(os, ratio*65535);
3393
3394         // Make data buffer
3395         std::string s = os.str();
3396         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3397         // Send as reliable
3398         m_clients.send(peer_id, 0, data, true);
3399 }
3400
3401 void Server::SendTimeOfDay(u16 peer_id, u16 time, f32 time_speed)
3402 {
3403         DSTACK(__FUNCTION_NAME);
3404
3405         // Make packet
3406         SharedBuffer<u8> data(2+2+4);
3407         writeU16(&data[0], TOCLIENT_TIME_OF_DAY);
3408         writeU16(&data[2], time);
3409         writeF1000(&data[4], time_speed);
3410
3411         if (peer_id == PEER_ID_INEXISTENT) {
3412                 m_clients.sendToAll(0,data,true);
3413         }
3414         else {
3415                 // Send as reliable
3416                 m_clients.send(peer_id, 0, data, true);
3417         }
3418 }
3419
3420 void Server::SendPlayerHP(u16 peer_id)
3421 {
3422         DSTACK(__FUNCTION_NAME);
3423         PlayerSAO *playersao = getPlayerSAO(peer_id);
3424         assert(playersao);
3425         playersao->m_hp_not_sent = false;
3426         SendHP(peer_id, playersao->getHP());
3427         m_script->player_event(playersao,"health_changed");
3428
3429         // Send to other clients
3430         std::string str = gob_cmd_punched(playersao->readDamage(), playersao->getHP());
3431         ActiveObjectMessage aom(playersao->getId(), true, str);
3432         playersao->m_messages_out.push_back(aom);
3433 }
3434
3435 void Server::SendPlayerBreath(u16 peer_id)
3436 {
3437         DSTACK(__FUNCTION_NAME);
3438         PlayerSAO *playersao = getPlayerSAO(peer_id);
3439         assert(playersao);
3440         playersao->m_breath_not_sent = false;
3441         m_script->player_event(playersao,"breath_changed");
3442         SendBreath(peer_id, playersao->getBreath());
3443 }
3444
3445 void Server::SendMovePlayer(u16 peer_id)
3446 {
3447         DSTACK(__FUNCTION_NAME);
3448         Player *player = m_env->getPlayer(peer_id);
3449         assert(player);
3450
3451         std::ostringstream os(std::ios_base::binary);
3452         writeU16(os, TOCLIENT_MOVE_PLAYER);
3453         writeV3F1000(os, player->getPosition());
3454         writeF1000(os, player->getPitch());
3455         writeF1000(os, player->getYaw());
3456
3457         {
3458                 v3f pos = player->getPosition();
3459                 f32 pitch = player->getPitch();
3460                 f32 yaw = player->getYaw();
3461                 verbosestream<<"Server: Sending TOCLIENT_MOVE_PLAYER"
3462                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3463                                 <<" pitch="<<pitch
3464                                 <<" yaw="<<yaw
3465                                 <<std::endl;
3466         }
3467
3468         // Make data buffer
3469         std::string s = os.str();
3470         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3471         // Send as reliable
3472         m_clients.send(peer_id, 0, data, true);
3473 }
3474
3475 void Server::SendLocalPlayerAnimations(u16 peer_id, v2s32 animation_frames[4], f32 animation_speed)
3476 {
3477         std::ostringstream os(std::ios_base::binary);
3478
3479         writeU16(os, TOCLIENT_LOCAL_PLAYER_ANIMATIONS);
3480         writeV2S32(os, animation_frames[0]);
3481         writeV2S32(os, animation_frames[1]);
3482         writeV2S32(os, animation_frames[2]);
3483         writeV2S32(os, animation_frames[3]);
3484         writeF1000(os, animation_speed);
3485
3486         // Make data buffer
3487         std::string s = os.str();
3488         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3489         // Send as reliable
3490         m_clients.send(peer_id, 0, data, true);
3491 }
3492
3493 void Server::SendEyeOffset(u16 peer_id, v3f first, v3f third)
3494 {
3495         std::ostringstream os(std::ios_base::binary);
3496
3497         writeU16(os, TOCLIENT_EYE_OFFSET);
3498         writeV3F1000(os, first);
3499         writeV3F1000(os, third);
3500
3501         // Make data buffer
3502         std::string s = os.str();
3503         SharedBuffer<u8> data((u8 *)s.c_str(), s.size());
3504         // Send as reliable
3505         m_clients.send(peer_id, 0, data, true);
3506 }
3507 void Server::SendPlayerPrivileges(u16 peer_id)
3508 {
3509         Player *player = m_env->getPlayer(peer_id);
3510         assert(player);
3511         if(player->peer_id == PEER_ID_INEXISTENT)
3512                 return;
3513
3514         std::set<std::string> privs;
3515         m_script->getAuth(player->getName(), NULL, &privs);
3516
3517         std::ostringstream os(std::ios_base::binary);
3518         writeU16(os, TOCLIENT_PRIVILEGES);
3519         writeU16(os, privs.size());
3520         for(std::set<std::string>::const_iterator i = privs.begin();
3521                         i != privs.end(); i++){
3522                 os<<serializeString(*i);
3523         }
3524
3525         // Make data buffer
3526         std::string s = os.str();
3527         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3528         // Send as reliable
3529         m_clients.send(peer_id, 0, data, true);
3530 }
3531
3532 void Server::SendPlayerInventoryFormspec(u16 peer_id)
3533 {
3534         Player *player = m_env->getPlayer(peer_id);
3535         assert(player);
3536         if(player->peer_id == PEER_ID_INEXISTENT)
3537                 return;
3538
3539         std::ostringstream os(std::ios_base::binary);
3540         writeU16(os, TOCLIENT_INVENTORY_FORMSPEC);
3541         os<<serializeLongString(player->inventory_formspec);
3542
3543         // Make data buffer
3544         std::string s = os.str();
3545         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3546         // Send as reliable
3547         m_clients.send(peer_id, 0, data, true);
3548 }
3549
3550 s32 Server::playSound(const SimpleSoundSpec &spec,
3551                 const ServerSoundParams &params)
3552 {
3553         // Find out initial position of sound
3554         bool pos_exists = false;
3555         v3f pos = params.getPos(m_env, &pos_exists);
3556         // If position is not found while it should be, cancel sound
3557         if(pos_exists != (params.type != ServerSoundParams::SSP_LOCAL))
3558                 return -1;
3559
3560         // Filter destination clients
3561         std::list<u16> dst_clients;
3562         if(params.to_player != "")
3563         {
3564                 Player *player = m_env->getPlayer(params.to_player.c_str());
3565                 if(!player){
3566                         infostream<<"Server::playSound: Player \""<<params.to_player
3567                                         <<"\" not found"<<std::endl;
3568                         return -1;
3569                 }
3570                 if(player->peer_id == PEER_ID_INEXISTENT){
3571                         infostream<<"Server::playSound: Player \""<<params.to_player
3572                                         <<"\" not connected"<<std::endl;
3573                         return -1;
3574                 }
3575                 dst_clients.push_back(player->peer_id);
3576         }
3577         else
3578         {
3579                 std::list<u16> clients = m_clients.getClientIDs();
3580
3581                 for(std::list<u16>::iterator
3582                                 i = clients.begin(); i != clients.end(); ++i)
3583                 {
3584                         Player *player = m_env->getPlayer(*i);
3585                         if(!player)
3586                                 continue;
3587                         if(pos_exists){
3588                                 if(player->getPosition().getDistanceFrom(pos) >
3589                                                 params.max_hear_distance)
3590                                         continue;
3591                         }
3592                         dst_clients.push_back(*i);
3593                 }
3594         }
3595         if(dst_clients.size() == 0)
3596                 return -1;
3597
3598         // Create the sound
3599         s32 id = m_next_sound_id++;
3600         // The sound will exist as a reference in m_playing_sounds
3601         m_playing_sounds[id] = ServerPlayingSound();
3602         ServerPlayingSound &psound = m_playing_sounds[id];
3603         psound.params = params;
3604         for(std::list<u16>::iterator i = dst_clients.begin();
3605                         i != dst_clients.end(); i++)
3606                 psound.clients.insert(*i);
3607         // Create packet
3608         std::ostringstream os(std::ios_base::binary);
3609         writeU16(os, TOCLIENT_PLAY_SOUND);
3610         writeS32(os, id);
3611         os<<serializeString(spec.name);
3612         writeF1000(os, spec.gain * params.gain);
3613         writeU8(os, params.type);
3614         writeV3F1000(os, pos);
3615         writeU16(os, params.object);
3616         writeU8(os, params.loop);
3617         // Make data buffer
3618         std::string s = os.str();
3619         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3620         // Send
3621         for(std::list<u16>::iterator i = dst_clients.begin();
3622                         i != dst_clients.end(); i++){
3623                 // Send as reliable
3624                 m_clients.send(*i, 0, data, true);
3625         }
3626         return id;
3627 }
3628 void Server::stopSound(s32 handle)
3629 {
3630         // Get sound reference
3631         std::map<s32, ServerPlayingSound>::iterator i =
3632                         m_playing_sounds.find(handle);
3633         if(i == m_playing_sounds.end())
3634                 return;
3635         ServerPlayingSound &psound = i->second;
3636         // Create packet
3637         std::ostringstream os(std::ios_base::binary);
3638         writeU16(os, TOCLIENT_STOP_SOUND);
3639         writeS32(os, handle);
3640         // Make data buffer
3641         std::string s = os.str();
3642         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3643         // Send
3644         for(std::set<u16>::iterator i = psound.clients.begin();
3645                         i != psound.clients.end(); i++){
3646                 // Send as reliable
3647                 m_clients.send(*i, 0, data, true);
3648         }
3649         // Remove sound reference
3650         m_playing_sounds.erase(i);
3651 }
3652
3653 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3654         std::list<u16> *far_players, float far_d_nodes)
3655 {
3656         float maxd = far_d_nodes*BS;
3657         v3f p_f = intToFloat(p, BS);
3658
3659         // Create packet
3660         u32 replysize = 8;
3661         SharedBuffer<u8> reply(replysize);
3662         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3663         writeS16(&reply[2], p.X);
3664         writeS16(&reply[4], p.Y);
3665         writeS16(&reply[6], p.Z);
3666
3667         std::list<u16> clients = m_clients.getClientIDs();
3668         for(std::list<u16>::iterator
3669                 i = clients.begin();
3670                 i != clients.end(); ++i)
3671         {
3672                 if(far_players)
3673                 {
3674                         // Get player
3675                         Player *player = m_env->getPlayer(*i);
3676                         if(player)
3677                         {
3678                                 // If player is far away, only set modified blocks not sent
3679                                 v3f player_pos = player->getPosition();
3680                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3681                                 {
3682                                         far_players->push_back(*i);
3683                                         continue;
3684                                 }
3685                         }
3686                 }
3687
3688                 // Send as reliable
3689                 m_clients.send(*i, 0, reply, true);
3690         }
3691 }
3692
3693 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3694                 std::list<u16> *far_players, float far_d_nodes,
3695                 bool remove_metadata)
3696 {
3697         float maxd = far_d_nodes*BS;
3698         v3f p_f = intToFloat(p, BS);
3699
3700         std::list<u16> clients = m_clients.getClientIDs();
3701                 for(std::list<u16>::iterator
3702                         i = clients.begin();
3703                         i != clients.end(); ++i)
3704                 {
3705
3706                 if(far_players)
3707                 {
3708                         // Get player
3709                         Player *player = m_env->getPlayer(*i);
3710                         if(player)
3711                         {
3712                                 // If player is far away, only set modified blocks not sent
3713                                 v3f player_pos = player->getPosition();
3714                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3715                                 {
3716                                         far_players->push_back(*i);
3717                                         continue;
3718                                 }
3719                         }
3720                 }
3721                 SharedBuffer<u8> reply(0);
3722                 m_clients.Lock();
3723                 RemoteClient* client = m_clients.lockedGetClientNoEx(*i);
3724                 if (client != 0)
3725                 {
3726                         // Create packet
3727                         u32 replysize = 9 + MapNode::serializedLength(client->serialization_version);
3728                         reply = SharedBuffer<u8>(replysize);
3729                         writeU16(&reply[0], TOCLIENT_ADDNODE);
3730                         writeS16(&reply[2], p.X);
3731                         writeS16(&reply[4], p.Y);
3732                         writeS16(&reply[6], p.Z);
3733                         n.serialize(&reply[8], client->serialization_version);
3734                         u32 index = 8 + MapNode::serializedLength(client->serialization_version);
3735                         writeU8(&reply[index], remove_metadata ? 0 : 1);
3736
3737                         if (!remove_metadata) {
3738                                 if (client->net_proto_version <= 21) {
3739                                         // Old clients always clear metadata; fix it
3740                                         // by sending the full block again.
3741                                         client->SetBlockNotSent(p);
3742                                 }
3743                         }
3744                 }
3745                 m_clients.Unlock();
3746
3747                 // Send as reliable
3748                 if (reply.getSize() > 0)
3749                         m_clients.send(*i, 0, reply, true);
3750         }
3751 }
3752
3753 void Server::setBlockNotSent(v3s16 p)
3754 {
3755         std::list<u16> clients = m_clients.getClientIDs();
3756         m_clients.Lock();
3757         for(std::list<u16>::iterator
3758                 i = clients.begin();
3759                 i != clients.end(); ++i)
3760         {
3761                 RemoteClient *client = m_clients.lockedGetClientNoEx(*i);
3762                 client->SetBlockNotSent(p);
3763         }
3764         m_clients.Unlock();
3765 }
3766
3767 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver, u16 net_proto_version)
3768 {
3769         DSTACK(__FUNCTION_NAME);
3770
3771         v3s16 p = block->getPos();
3772
3773 #if 0
3774         // Analyze it a bit
3775         bool completely_air = true;
3776         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
3777         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
3778         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
3779         {
3780                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
3781                 {
3782                         completely_air = false;
3783                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
3784                 }
3785         }
3786
3787         // Print result
3788         infostream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
3789         if(completely_air)
3790                 infostream<<"[completely air] ";
3791         infostream<<std::endl;
3792 #endif
3793
3794         /*
3795                 Create a packet with the block in the right format
3796         */
3797
3798         std::ostringstream os(std::ios_base::binary);
3799         block->serialize(os, ver, false);
3800         block->serializeNetworkSpecific(os, net_proto_version);
3801         std::string s = os.str();
3802         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
3803
3804         u32 replysize = 8 + blockdata.getSize();
3805         SharedBuffer<u8> reply(replysize);
3806         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
3807         writeS16(&reply[2], p.X);
3808         writeS16(&reply[4], p.Y);
3809         writeS16(&reply[6], p.Z);
3810         memcpy(&reply[8], *blockdata, blockdata.getSize());
3811
3812         /*infostream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3813                         <<":  \tpacket size: "<<replysize<<std::endl;*/
3814
3815         /*
3816                 Send packet
3817         */
3818         m_clients.send(peer_id, 2, reply, true);
3819 }
3820
3821 void Server::SendBlocks(float dtime)
3822 {
3823         DSTACK(__FUNCTION_NAME);
3824
3825         JMutexAutoLock envlock(m_env_mutex);
3826         //TODO check if one big lock could be faster then multiple small ones
3827
3828         ScopeProfiler sp(g_profiler, "Server: sel and send blocks to clients");
3829
3830         std::vector<PrioritySortedBlockTransfer> queue;
3831
3832         s32 total_sending = 0;
3833
3834         {
3835                 ScopeProfiler sp(g_profiler, "Server: selecting blocks for sending");
3836
3837                 std::list<u16> clients = m_clients.getClientIDs();
3838
3839                 m_clients.Lock();
3840                 for(std::list<u16>::iterator
3841                         i = clients.begin();
3842                         i != clients.end(); ++i)
3843                 {
3844                         RemoteClient *client = m_clients.lockedGetClientNoEx(*i,Active);
3845
3846                         if (client == NULL)
3847                                 return;
3848
3849                         total_sending += client->SendingCount();
3850                         client->GetNextBlocks(m_env,m_emerge, dtime, queue);
3851                 }
3852                 m_clients.Unlock();
3853         }
3854
3855         // Sort.
3856         // Lowest priority number comes first.
3857         // Lowest is most important.
3858         std::sort(queue.begin(), queue.end());
3859
3860         m_clients.Lock();
3861         for(u32 i=0; i<queue.size(); i++)
3862         {
3863                 //TODO: Calculate limit dynamically
3864                 if(total_sending >= g_settings->getS32
3865                                 ("max_simultaneous_block_sends_server_total"))
3866                         break;
3867
3868                 PrioritySortedBlockTransfer q = queue[i];
3869
3870                 MapBlock *block = NULL;
3871                 try
3872                 {
3873                         block = m_env->getMap().getBlockNoCreate(q.pos);
3874                 }
3875                 catch(InvalidPositionException &e)
3876                 {
3877                         continue;
3878                 }
3879
3880                 RemoteClient *client = m_clients.lockedGetClientNoEx(q.peer_id,Active);
3881
3882                 if(!client)
3883                         continue;
3884
3885                 SendBlockNoLock(q.peer_id, block, client->serialization_version, client->net_proto_version);
3886
3887                 client->SentBlock(q.pos);
3888                 total_sending++;
3889         }
3890         m_clients.Unlock();
3891 }
3892
3893 void Server::fillMediaCache()
3894 {
3895         DSTACK(__FUNCTION_NAME);
3896
3897         infostream<<"Server: Calculating media file checksums"<<std::endl;
3898
3899         // Collect all media file paths
3900         std::list<std::string> paths;
3901         for(std::vector<ModSpec>::iterator i = m_mods.begin();
3902                         i != m_mods.end(); i++){
3903                 const ModSpec &mod = *i;
3904                 paths.push_back(mod.path + DIR_DELIM + "textures");
3905                 paths.push_back(mod.path + DIR_DELIM + "sounds");
3906                 paths.push_back(mod.path + DIR_DELIM + "media");
3907                 paths.push_back(mod.path + DIR_DELIM + "models");
3908         }
3909         paths.push_back(porting::path_user + DIR_DELIM + "textures" + DIR_DELIM + "server");
3910
3911         // Collect media file information from paths into cache
3912         for(std::list<std::string>::iterator i = paths.begin();
3913                         i != paths.end(); i++)
3914         {
3915                 std::string mediapath = *i;
3916                 std::vector<fs::DirListNode> dirlist = fs::GetDirListing(mediapath);
3917                 for(u32 j=0; j<dirlist.size(); j++){
3918                         if(dirlist[j].dir) // Ignode dirs
3919                                 continue;
3920                         std::string filename = dirlist[j].name;
3921                         // If name contains illegal characters, ignore the file
3922                         if(!string_allowed(filename, TEXTURENAME_ALLOWED_CHARS)){
3923                                 infostream<<"Server: ignoring illegal file name: \""
3924                                                 <<filename<<"\""<<std::endl;
3925                                 continue;
3926                         }
3927                         // If name is not in a supported format, ignore it
3928                         const char *supported_ext[] = {
3929                                 ".png", ".jpg", ".bmp", ".tga",
3930                                 ".pcx", ".ppm", ".psd", ".wal", ".rgb",
3931                                 ".ogg",
3932                                 ".x", ".b3d", ".md2", ".obj",
3933                                 NULL
3934                         };
3935                         if(removeStringEnd(filename, supported_ext) == ""){
3936                                 infostream<<"Server: ignoring unsupported file extension: \""
3937                                                 <<filename<<"\""<<std::endl;
3938                                 continue;
3939                         }
3940                         // Ok, attempt to load the file and add to cache
3941                         std::string filepath = mediapath + DIR_DELIM + filename;
3942                         // Read data
3943                         std::ifstream fis(filepath.c_str(), std::ios_base::binary);
3944                         if(fis.good() == false){
3945                                 errorstream<<"Server::fillMediaCache(): Could not open \""
3946                                                 <<filename<<"\" for reading"<<std::endl;
3947                                 continue;
3948                         }
3949                         std::ostringstream tmp_os(std::ios_base::binary);
3950                         bool bad = false;
3951                         for(;;){
3952                                 char buf[1024];
3953                                 fis.read(buf, 1024);
3954                                 std::streamsize len = fis.gcount();
3955                                 tmp_os.write(buf, len);
3956                                 if(fis.eof())
3957                                         break;
3958                                 if(!fis.good()){
3959                                         bad = true;
3960                                         break;
3961                                 }
3962                         }
3963                         if(bad){
3964                                 errorstream<<"Server::fillMediaCache(): Failed to read \""
3965                                                 <<filename<<"\""<<std::endl;
3966                                 continue;
3967                         }
3968                         if(tmp_os.str().length() == 0){
3969                                 errorstream<<"Server::fillMediaCache(): Empty file \""
3970                                                 <<filepath<<"\""<<std::endl;
3971                                 continue;
3972                         }
3973
3974                         SHA1 sha1;
3975                         sha1.addBytes(tmp_os.str().c_str(), tmp_os.str().length());
3976
3977                         unsigned char *digest = sha1.getDigest();
3978                         std::string sha1_base64 = base64_encode(digest, 20);
3979                         std::string sha1_hex = hex_encode((char*)digest, 20);
3980                         free(digest);
3981
3982                         // Put in list
3983                         this->m_media[filename] = MediaInfo(filepath, sha1_base64);
3984                         verbosestream<<"Server: "<<sha1_hex<<" is "<<filename<<std::endl;
3985                 }
3986         }
3987 }
3988
3989 struct SendableMediaAnnouncement
3990 {
3991         std::string name;
3992         std::string sha1_digest;
3993
3994         SendableMediaAnnouncement(const std::string &name_="",
3995                                   const std::string &sha1_digest_=""):
3996                 name(name_),
3997                 sha1_digest(sha1_digest_)
3998         {}
3999 };
4000
4001 void Server::sendMediaAnnouncement(u16 peer_id)
4002 {
4003         DSTACK(__FUNCTION_NAME);
4004
4005         verbosestream<<"Server: Announcing files to id("<<peer_id<<")"
4006                         <<std::endl;
4007
4008         std::list<SendableMediaAnnouncement> file_announcements;
4009
4010         for(std::map<std::string, MediaInfo>::iterator i = m_media.begin();
4011                         i != m_media.end(); i++){
4012                 // Put in list
4013                 file_announcements.push_back(
4014                                 SendableMediaAnnouncement(i->first, i->second.sha1_digest));
4015         }
4016
4017         // Make packet
4018         std::ostringstream os(std::ios_base::binary);
4019
4020         /*
4021                 u16 command
4022                 u32 number of files
4023                 for each texture {
4024                         u16 length of name
4025                         string name
4026                         u16 length of sha1_digest
4027                         string sha1_digest
4028                 }
4029         */
4030
4031         writeU16(os, TOCLIENT_ANNOUNCE_MEDIA);
4032         writeU16(os, file_announcements.size());
4033
4034         for(std::list<SendableMediaAnnouncement>::iterator
4035                         j = file_announcements.begin();
4036                         j != file_announcements.end(); ++j){
4037                 os<<serializeString(j->name);
4038                 os<<serializeString(j->sha1_digest);
4039         }
4040         os<<serializeString(g_settings->get("remote_media"));
4041
4042         // Make data buffer
4043         std::string s = os.str();
4044         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
4045
4046         // Send as reliable
4047         m_clients.send(peer_id, 0, data, true);
4048 }
4049
4050 struct SendableMedia
4051 {
4052         std::string name;
4053         std::string path;
4054         std::string data;
4055
4056         SendableMedia(const std::string &name_="", const std::string &path_="",
4057                       const std::string &data_=""):
4058                 name(name_),
4059                 path(path_),
4060                 data(data_)
4061         {}
4062 };
4063
4064 void Server::sendRequestedMedia(u16 peer_id,
4065                 const std::list<std::string> &tosend)
4066 {
4067         DSTACK(__FUNCTION_NAME);
4068
4069         verbosestream<<"Server::sendRequestedMedia(): "
4070                         <<"Sending files to client"<<std::endl;
4071
4072         /* Read files */
4073
4074         // Put 5kB in one bunch (this is not accurate)
4075         u32 bytes_per_bunch = 5000;
4076
4077         std::vector< std::list<SendableMedia> > file_bunches;
4078         file_bunches.push_back(std::list<SendableMedia>());
4079
4080         u32 file_size_bunch_total = 0;
4081
4082         for(std::list<std::string>::const_iterator i = tosend.begin();
4083                         i != tosend.end(); ++i)
4084         {
4085                 const std::string &name = *i;
4086
4087                 if(m_media.find(name) == m_media.end()){
4088                         errorstream<<"Server::sendRequestedMedia(): Client asked for "
4089                                         <<"unknown file \""<<(name)<<"\""<<std::endl;
4090                         continue;
4091                 }
4092
4093                 //TODO get path + name
4094                 std::string tpath = m_media[name].path;
4095
4096                 // Read data
4097                 std::ifstream fis(tpath.c_str(), std::ios_base::binary);
4098                 if(fis.good() == false){
4099                         errorstream<<"Server::sendRequestedMedia(): Could not open \""
4100                                         <<tpath<<"\" for reading"<<std::endl;
4101                         continue;
4102                 }
4103                 std::ostringstream tmp_os(std::ios_base::binary);
4104                 bool bad = false;
4105                 for(;;){
4106                         char buf[1024];
4107                         fis.read(buf, 1024);
4108                         std::streamsize len = fis.gcount();
4109                         tmp_os.write(buf, len);
4110                         file_size_bunch_total += len;
4111                         if(fis.eof())
4112                                 break;
4113                         if(!fis.good()){
4114                                 bad = true;
4115                                 break;
4116                         }
4117                 }
4118                 if(bad){
4119                         errorstream<<"Server::sendRequestedMedia(): Failed to read \""
4120                                         <<name<<"\""<<std::endl;
4121                         continue;
4122                 }
4123                 /*infostream<<"Server::sendRequestedMedia(): Loaded \""
4124                                 <<tname<<"\""<<std::endl;*/
4125                 // Put in list
4126                 file_bunches[file_bunches.size()-1].push_back(
4127                                 SendableMedia(name, tpath, tmp_os.str()));
4128
4129                 // Start next bunch if got enough data
4130                 if(file_size_bunch_total >= bytes_per_bunch){
4131                         file_bunches.push_back(std::list<SendableMedia>());
4132                         file_size_bunch_total = 0;
4133                 }
4134
4135         }
4136
4137         /* Create and send packets */
4138
4139         u32 num_bunches = file_bunches.size();
4140         for(u32 i=0; i<num_bunches; i++)
4141         {
4142                 std::ostringstream os(std::ios_base::binary);
4143
4144                 /*
4145                         u16 command
4146                         u16 total number of texture bunches
4147                         u16 index of this bunch
4148                         u32 number of files in this bunch
4149                         for each file {
4150                                 u16 length of name
4151                                 string name
4152                                 u32 length of data
4153                                 data
4154                         }
4155                 */
4156
4157                 writeU16(os, TOCLIENT_MEDIA);
4158                 writeU16(os, num_bunches);
4159                 writeU16(os, i);
4160                 writeU32(os, file_bunches[i].size());
4161
4162                 for(std::list<SendableMedia>::iterator
4163                                 j = file_bunches[i].begin();
4164                                 j != file_bunches[i].end(); ++j){
4165                         os<<serializeString(j->name);
4166                         os<<serializeLongString(j->data);
4167                 }
4168
4169                 // Make data buffer
4170                 std::string s = os.str();
4171                 verbosestream<<"Server::sendRequestedMedia(): bunch "
4172                                 <<i<<"/"<<num_bunches
4173                                 <<" files="<<file_bunches[i].size()
4174                                 <<" size=" <<s.size()<<std::endl;
4175                 SharedBuffer<u8> data((u8*)s.c_str(), s.size());
4176                 // Send as reliable
4177                 m_clients.send(peer_id, 2, data, true);
4178         }
4179 }
4180
4181 void Server::sendDetachedInventory(const std::string &name, u16 peer_id)
4182 {
4183         if(m_detached_inventories.count(name) == 0){
4184                 errorstream<<__FUNCTION_NAME<<": \""<<name<<"\" not found"<<std::endl;
4185                 return;
4186         }
4187         Inventory *inv = m_detached_inventories[name];
4188
4189         std::ostringstream os(std::ios_base::binary);
4190         writeU16(os, TOCLIENT_DETACHED_INVENTORY);
4191         os<<serializeString(name);
4192         inv->serialize(os);
4193
4194         // Make data buffer
4195         std::string s = os.str();
4196         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
4197
4198         if (peer_id != PEER_ID_INEXISTENT)
4199         {
4200                 // Send as reliable
4201                 m_clients.send(peer_id, 0, data, true);
4202         }
4203         else
4204         {
4205                 m_clients.sendToAll(0,data,true);
4206         }
4207 }
4208
4209 void Server::sendDetachedInventories(u16 peer_id)
4210 {
4211         DSTACK(__FUNCTION_NAME);
4212
4213         for(std::map<std::string, Inventory*>::iterator
4214                         i = m_detached_inventories.begin();
4215                         i != m_detached_inventories.end(); i++){
4216                 const std::string &name = i->first;
4217                 //Inventory *inv = i->second;
4218                 sendDetachedInventory(name, peer_id);
4219         }
4220 }
4221
4222 /*
4223         Something random
4224 */
4225
4226 void Server::DiePlayer(u16 peer_id)
4227 {
4228         DSTACK(__FUNCTION_NAME);
4229
4230         PlayerSAO *playersao = getPlayerSAO(peer_id);
4231         assert(playersao);
4232
4233         infostream<<"Server::DiePlayer(): Player "
4234                         <<playersao->getPlayer()->getName()
4235                         <<" dies"<<std::endl;
4236
4237         playersao->setHP(0);
4238
4239         // Trigger scripted stuff
4240         m_script->on_dieplayer(playersao);
4241
4242         SendPlayerHP(peer_id);
4243         SendDeathscreen(peer_id, false, v3f(0,0,0));
4244 }
4245
4246 void Server::RespawnPlayer(u16 peer_id)
4247 {
4248         DSTACK(__FUNCTION_NAME);
4249
4250         PlayerSAO *playersao = getPlayerSAO(peer_id);
4251         assert(playersao);
4252
4253         infostream<<"Server::RespawnPlayer(): Player "
4254                         <<playersao->getPlayer()->getName()
4255                         <<" respawns"<<std::endl;
4256
4257         playersao->setHP(PLAYER_MAX_HP);
4258
4259         bool repositioned = m_script->on_respawnplayer(playersao);
4260         if(!repositioned){
4261                 v3f pos = findSpawnPos(m_env->getServerMap());
4262                 playersao->setPos(pos);
4263         }
4264 }
4265
4266 void Server::DenyAccess(u16 peer_id, const std::wstring &reason)
4267 {
4268         DSTACK(__FUNCTION_NAME);
4269
4270         SendAccessDenied(peer_id, reason);
4271         m_clients.event(peer_id,SetDenied);
4272         m_con.DisconnectPeer(peer_id);
4273 }
4274
4275 void Server::DeleteClient(u16 peer_id, ClientDeletionReason reason)
4276 {
4277         DSTACK(__FUNCTION_NAME);
4278         std::wstring message;
4279         {
4280                 /*
4281                         Clear references to playing sounds
4282                 */
4283                 for(std::map<s32, ServerPlayingSound>::iterator
4284                                 i = m_playing_sounds.begin();
4285                                 i != m_playing_sounds.end();)
4286                 {
4287                         ServerPlayingSound &psound = i->second;
4288                         psound.clients.erase(peer_id);
4289                         if(psound.clients.size() == 0)
4290                                 m_playing_sounds.erase(i++);
4291                         else
4292                                 i++;
4293                 }
4294
4295                 Player *player = m_env->getPlayer(peer_id);
4296
4297                 // Collect information about leaving in chat
4298                 {
4299                         if(player != NULL && reason != CDR_DENY)
4300                         {
4301                                 std::wstring name = narrow_to_wide(player->getName());
4302                                 message += L"*** ";
4303                                 message += name;
4304                                 message += L" left the game.";
4305                                 if(reason == CDR_TIMEOUT)
4306                                         message += L" (timed out)";
4307                         }
4308                 }
4309
4310                 /* Run scripts and remove from environment */
4311                 {
4312                         if(player != NULL)
4313                         {
4314                                 PlayerSAO *playersao = player->getPlayerSAO();
4315                                 assert(playersao);
4316
4317                                 m_script->on_leaveplayer(playersao);
4318
4319                                 playersao->disconnected();
4320                         }
4321                 }
4322
4323                 /*
4324                         Print out action
4325                 */
4326                 {
4327                         if(player != NULL && reason != CDR_DENY)
4328                         {
4329                                 std::ostringstream os(std::ios_base::binary);
4330                                 std::list<u16> clients = m_clients.getClientIDs();
4331
4332                                 for(std::list<u16>::iterator
4333                                         i = clients.begin();
4334                                         i != clients.end(); ++i)
4335                                 {
4336                                         // Get player
4337                                         Player *player = m_env->getPlayer(*i);
4338                                         if(!player)
4339                                                 continue;
4340                                         // Get name of player
4341                                         os<<player->getName()<<" ";
4342                                 }
4343
4344                                 actionstream<<player->getName()<<" "
4345                                                 <<(reason==CDR_TIMEOUT?"times out.":"leaves game.")
4346                                                 <<" List of players: "<<os.str()<<std::endl;
4347                         }
4348                 }
4349                 {
4350                         JMutexAutoLock env_lock(m_env_mutex);
4351                         m_clients.DeleteClient(peer_id);
4352                 }
4353         }
4354
4355         // Send leave chat message to all remaining clients
4356         if(message.length() != 0)
4357                 SendChatMessage(PEER_ID_INEXISTENT,message);
4358 }
4359
4360 void Server::UpdateCrafting(u16 peer_id)
4361 {
4362         DSTACK(__FUNCTION_NAME);
4363
4364         Player* player = m_env->getPlayer(peer_id);
4365         assert(player);
4366
4367         // Get a preview for crafting
4368         ItemStack preview;
4369         InventoryLocation loc;
4370         loc.setPlayer(player->getName());
4371         getCraftingResult(&player->inventory, preview, false, this);
4372         m_env->getScriptIface()->item_CraftPredict(preview, player->getPlayerSAO(), (&player->inventory)->getList("craft"), loc);
4373
4374         // Put the new preview in
4375         InventoryList *plist = player->inventory.getList("craftpreview");
4376         assert(plist);
4377         assert(plist->getSize() >= 1);
4378         plist->changeItem(0, preview);
4379 }
4380
4381 RemoteClient* Server::getClient(u16 peer_id, ClientState state_min)
4382 {
4383         RemoteClient *client = getClientNoEx(peer_id,state_min);
4384         if(!client)
4385                 throw ClientNotFoundException("Client not found");
4386
4387         return client;
4388 }
4389 RemoteClient* Server::getClientNoEx(u16 peer_id, ClientState state_min)
4390 {
4391         return m_clients.getClientNoEx(peer_id, state_min);
4392 }
4393
4394 std::string Server::getPlayerName(u16 peer_id)
4395 {
4396         Player *player = m_env->getPlayer(peer_id);
4397         if(player == NULL)
4398                 return "[id="+itos(peer_id)+"]";
4399         return player->getName();
4400 }
4401
4402 PlayerSAO* Server::getPlayerSAO(u16 peer_id)
4403 {
4404         Player *player = m_env->getPlayer(peer_id);
4405         if(player == NULL)
4406                 return NULL;
4407         return player->getPlayerSAO();
4408 }
4409
4410 std::wstring Server::getStatusString()
4411 {
4412         std::wostringstream os(std::ios_base::binary);
4413         os<<L"# Server: ";
4414         // Version
4415         os<<L"version="<<narrow_to_wide(minetest_version_simple);
4416         // Uptime
4417         os<<L", uptime="<<m_uptime.get();
4418         // Max lag estimate
4419         os<<L", max_lag="<<m_env->getMaxLagEstimate();
4420         // Information about clients
4421         bool first = true;
4422         os<<L", clients={";
4423         std::list<u16> clients = m_clients.getClientIDs();
4424         for(std::list<u16>::iterator i = clients.begin();
4425                 i != clients.end(); ++i)
4426         {
4427                 // Get player
4428                 Player *player = m_env->getPlayer(*i);
4429                 // Get name of player
4430                 std::wstring name = L"unknown";
4431                 if(player != NULL)
4432                         name = narrow_to_wide(player->getName());
4433                 // Add name to information string
4434                 if(!first)
4435                         os<<L",";
4436                 else
4437                         first = false;
4438                 os<<name;
4439         }
4440         os<<L"}";
4441         if(((ServerMap*)(&m_env->getMap()))->isSavingEnabled() == false)
4442                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4443         if(g_settings->get("motd") != "")
4444                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings->get("motd"));
4445         return os.str();
4446 }
4447
4448 std::set<std::string> Server::getPlayerEffectivePrivs(const std::string &name)
4449 {
4450         std::set<std::string> privs;
4451         m_script->getAuth(name, NULL, &privs);
4452         return privs;
4453 }
4454
4455 bool Server::checkPriv(const std::string &name, const std::string &priv)
4456 {
4457         std::set<std::string> privs = getPlayerEffectivePrivs(name);
4458         return (privs.count(priv) != 0);
4459 }
4460
4461 void Server::reportPrivsModified(const std::string &name)
4462 {
4463         if(name == ""){
4464                 std::list<u16> clients = m_clients.getClientIDs();
4465                 for(std::list<u16>::iterator
4466                                 i = clients.begin();
4467                                 i != clients.end(); ++i){
4468                         Player *player = m_env->getPlayer(*i);
4469                         reportPrivsModified(player->getName());
4470                 }
4471         } else {
4472                 Player *player = m_env->getPlayer(name.c_str());
4473                 if(!player)
4474                         return;
4475                 SendPlayerPrivileges(player->peer_id);
4476                 PlayerSAO *sao = player->getPlayerSAO();
4477                 if(!sao)
4478                         return;
4479                 sao->updatePrivileges(
4480                                 getPlayerEffectivePrivs(name),
4481                                 isSingleplayer());
4482         }
4483 }
4484
4485 void Server::reportInventoryFormspecModified(const std::string &name)
4486 {
4487         Player *player = m_env->getPlayer(name.c_str());
4488         if(!player)
4489                 return;
4490         SendPlayerInventoryFormspec(player->peer_id);
4491 }
4492
4493 void Server::setIpBanned(const std::string &ip, const std::string &name)
4494 {
4495         m_banmanager->add(ip, name);
4496 }
4497
4498 void Server::unsetIpBanned(const std::string &ip_or_name)
4499 {
4500         m_banmanager->remove(ip_or_name);
4501 }
4502
4503 std::string Server::getBanDescription(const std::string &ip_or_name)
4504 {
4505         return m_banmanager->getBanDescription(ip_or_name);
4506 }
4507
4508 void Server::notifyPlayer(const char *name, const std::wstring &msg)
4509 {
4510         Player *player = m_env->getPlayer(name);
4511         if(!player)
4512                 return;
4513
4514         if (player->peer_id == PEER_ID_INEXISTENT)
4515                 return;
4516
4517         SendChatMessage(player->peer_id, msg);
4518 }
4519
4520 bool Server::showFormspec(const char *playername, const std::string &formspec, const std::string &formname)
4521 {
4522         Player *player = m_env->getPlayer(playername);
4523
4524         if(!player)
4525         {
4526                 infostream<<"showFormspec: couldn't find player:"<<playername<<std::endl;
4527                 return false;
4528         }
4529
4530         SendShowFormspecMessage(player->peer_id, formspec, formname);
4531         return true;
4532 }
4533
4534 u32 Server::hudAdd(Player *player, HudElement *form) {
4535         if (!player)
4536                 return -1;
4537
4538         u32 id = player->addHud(form);
4539
4540         SendHUDAdd(player->peer_id, id, form);
4541
4542         return id;
4543 }
4544
4545 bool Server::hudRemove(Player *player, u32 id) {
4546         if (!player)
4547                 return false;
4548
4549         HudElement* todel = player->removeHud(id);
4550
4551         if (!todel)
4552                 return false;
4553
4554         delete todel;
4555
4556         SendHUDRemove(player->peer_id, id);
4557         return true;
4558 }
4559
4560 bool Server::hudChange(Player *player, u32 id, HudElementStat stat, void *data) {
4561         if (!player)
4562                 return false;
4563
4564         SendHUDChange(player->peer_id, id, stat, data);
4565         return true;
4566 }
4567
4568 bool Server::hudSetFlags(Player *player, u32 flags, u32 mask) {
4569         if (!player)
4570                 return false;
4571
4572         SendHUDSetFlags(player->peer_id, flags, mask);
4573         player->hud_flags = flags;
4574
4575         m_script->player_event(player->getPlayerSAO(),"hud_changed");
4576         return true;
4577 }
4578
4579 bool Server::hudSetHotbarItemcount(Player *player, s32 hotbar_itemcount) {
4580         if (!player)
4581                 return false;
4582         if (hotbar_itemcount <= 0 || hotbar_itemcount > HUD_HOTBAR_ITEMCOUNT_MAX)
4583                 return false;
4584
4585         std::ostringstream os(std::ios::binary);
4586         writeS32(os, hotbar_itemcount);
4587         SendHUDSetParam(player->peer_id, HUD_PARAM_HOTBAR_ITEMCOUNT, os.str());
4588         return true;
4589 }
4590
4591 void Server::hudSetHotbarImage(Player *player, std::string name) {
4592         if (!player)
4593                 return;
4594
4595         SendHUDSetParam(player->peer_id, HUD_PARAM_HOTBAR_IMAGE, name);
4596 }
4597
4598 void Server::hudSetHotbarSelectedImage(Player *player, std::string name) {
4599         if (!player)
4600                 return;
4601
4602         SendHUDSetParam(player->peer_id, HUD_PARAM_HOTBAR_SELECTED_IMAGE, name);
4603 }
4604
4605 bool Server::setLocalPlayerAnimations(Player *player, v2s32 animation_frames[4], f32 frame_speed)
4606 {
4607         if (!player)
4608                 return false;
4609
4610         SendLocalPlayerAnimations(player->peer_id, animation_frames, frame_speed);
4611         return true;
4612 }
4613
4614 bool Server::setPlayerEyeOffset(Player *player, v3f first, v3f third)
4615 {
4616         if (!player)
4617                 return false;
4618
4619         SendEyeOffset(player->peer_id, first, third);
4620         return true;
4621 }
4622
4623 bool Server::setSky(Player *player, const video::SColor &bgcolor,
4624                 const std::string &type, const std::vector<std::string> &params)
4625 {
4626         if (!player)
4627                 return false;
4628
4629         SendSetSky(player->peer_id, bgcolor, type, params);
4630         return true;
4631 }
4632
4633 bool Server::overrideDayNightRatio(Player *player, bool do_override,
4634                 float ratio)
4635 {
4636         if (!player)
4637                 return false;
4638
4639         SendOverrideDayNightRatio(player->peer_id, do_override, ratio);
4640         return true;
4641 }
4642
4643 void Server::notifyPlayers(const std::wstring &msg)
4644 {
4645         SendChatMessage(PEER_ID_INEXISTENT,msg);
4646 }
4647
4648 void Server::spawnParticle(const char *playername, v3f pos,
4649                 v3f velocity, v3f acceleration,
4650                 float expirationtime, float size, bool
4651                 collisiondetection, bool vertical, std::string texture)
4652 {
4653         Player *player = m_env->getPlayer(playername);
4654         if(!player)
4655                 return;
4656         SendSpawnParticle(player->peer_id, pos, velocity, acceleration,
4657                         expirationtime, size, collisiondetection, vertical, texture);
4658 }
4659
4660 void Server::spawnParticleAll(v3f pos, v3f velocity, v3f acceleration,
4661                 float expirationtime, float size,
4662                 bool collisiondetection, bool vertical, std::string texture)
4663 {
4664         SendSpawnParticle(PEER_ID_INEXISTENT,pos, velocity, acceleration,
4665                         expirationtime, size, collisiondetection, vertical, texture);
4666 }
4667
4668 u32 Server::addParticleSpawner(const char *playername,
4669                 u16 amount, float spawntime,
4670                 v3f minpos, v3f maxpos,
4671                 v3f minvel, v3f maxvel,
4672                 v3f minacc, v3f maxacc,
4673                 float minexptime, float maxexptime,
4674                 float minsize, float maxsize,
4675                 bool collisiondetection, bool vertical, std::string texture)
4676 {
4677         Player *player = m_env->getPlayer(playername);
4678         if(!player)
4679                 return -1;
4680
4681         u32 id = 0;
4682         for(;;) // look for unused particlespawner id
4683         {
4684                 id++;
4685                 if (std::find(m_particlespawner_ids.begin(),
4686                                 m_particlespawner_ids.end(), id)
4687                                 == m_particlespawner_ids.end())
4688                 {
4689                         m_particlespawner_ids.push_back(id);
4690                         break;
4691                 }
4692         }
4693
4694         SendAddParticleSpawner(player->peer_id, amount, spawntime,
4695                 minpos, maxpos, minvel, maxvel, minacc, maxacc,
4696                 minexptime, maxexptime, minsize, maxsize,
4697                 collisiondetection, vertical, texture, id);
4698
4699         return id;
4700 }
4701
4702 u32 Server::addParticleSpawnerAll(u16 amount, float spawntime,
4703                 v3f minpos, v3f maxpos,
4704                 v3f minvel, v3f maxvel,
4705                 v3f minacc, v3f maxacc,
4706                 float minexptime, float maxexptime,
4707                 float minsize, float maxsize,
4708                 bool collisiondetection, bool vertical, std::string texture)
4709 {
4710         u32 id = 0;
4711         for(;;) // look for unused particlespawner id
4712         {
4713                 id++;
4714                 if (std::find(m_particlespawner_ids.begin(),
4715                                 m_particlespawner_ids.end(), id)
4716                                 == m_particlespawner_ids.end())
4717                 {
4718                         m_particlespawner_ids.push_back(id);
4719                         break;
4720                 }
4721         }
4722
4723         SendAddParticleSpawner(PEER_ID_INEXISTENT, amount, spawntime,
4724                 minpos, maxpos, minvel, maxvel, minacc, maxacc,
4725                 minexptime, maxexptime, minsize, maxsize,
4726                 collisiondetection, vertical, texture, id);
4727
4728         return id;
4729 }
4730
4731 void Server::deleteParticleSpawner(const char *playername, u32 id)
4732 {
4733         Player *player = m_env->getPlayer(playername);
4734         if(!player)
4735                 return;
4736
4737         m_particlespawner_ids.erase(
4738                         std::remove(m_particlespawner_ids.begin(),
4739                         m_particlespawner_ids.end(), id),
4740                         m_particlespawner_ids.end());
4741         SendDeleteParticleSpawner(player->peer_id, id);
4742 }
4743
4744 void Server::deleteParticleSpawnerAll(u32 id)
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(PEER_ID_INEXISTENT, id);
4751 }
4752
4753 Inventory* Server::createDetachedInventory(const std::string &name)
4754 {
4755         if(m_detached_inventories.count(name) > 0){
4756                 infostream<<"Server clearing detached inventory \""<<name<<"\""<<std::endl;
4757                 delete m_detached_inventories[name];
4758         } else {
4759                 infostream<<"Server creating detached inventory \""<<name<<"\""<<std::endl;
4760         }
4761         Inventory *inv = new Inventory(m_itemdef);
4762         assert(inv);
4763         m_detached_inventories[name] = inv;
4764         //TODO find a better way to do this
4765         sendDetachedInventory(name,PEER_ID_INEXISTENT);
4766         return inv;
4767 }
4768
4769 class BoolScopeSet
4770 {
4771 public:
4772         BoolScopeSet(bool *dst, bool val):
4773                 m_dst(dst)
4774         {
4775                 m_orig_state = *m_dst;
4776                 *m_dst = val;
4777         }
4778         ~BoolScopeSet()
4779         {
4780                 *m_dst = m_orig_state;
4781         }
4782 private:
4783         bool *m_dst;
4784         bool m_orig_state;
4785 };
4786
4787 // actions: time-reversed list
4788 // Return value: success/failure
4789 bool Server::rollbackRevertActions(const std::list<RollbackAction> &actions,
4790                 std::list<std::string> *log)
4791 {
4792         infostream<<"Server::rollbackRevertActions(len="<<actions.size()<<")"<<std::endl;
4793         ServerMap *map = (ServerMap*)(&m_env->getMap());
4794         // Disable rollback report sink while reverting
4795         BoolScopeSet rollback_scope_disable(&m_rollback_sink_enabled, false);
4796
4797         // Fail if no actions to handle
4798         if(actions.empty()){
4799                 log->push_back("Nothing to do.");
4800                 return false;
4801         }
4802
4803         int num_tried = 0;
4804         int num_failed = 0;
4805
4806         for(std::list<RollbackAction>::const_iterator
4807                         i = actions.begin();
4808                         i != actions.end(); i++)
4809         {
4810                 const RollbackAction &action = *i;
4811                 num_tried++;
4812                 bool success = action.applyRevert(map, this, this);
4813                 if(!success){
4814                         num_failed++;
4815                         std::ostringstream os;
4816                         os<<"Revert of step ("<<num_tried<<") "<<action.toString()<<" failed";
4817                         infostream<<"Map::rollbackRevertActions(): "<<os.str()<<std::endl;
4818                         if(log)
4819                                 log->push_back(os.str());
4820                 }else{
4821                         std::ostringstream os;
4822                         os<<"Successfully reverted step ("<<num_tried<<") "<<action.toString();
4823                         infostream<<"Map::rollbackRevertActions(): "<<os.str()<<std::endl;
4824                         if(log)
4825                                 log->push_back(os.str());
4826                 }
4827         }
4828
4829         infostream<<"Map::rollbackRevertActions(): "<<num_failed<<"/"<<num_tried
4830                         <<" failed"<<std::endl;
4831
4832         // Call it done if less than half failed
4833         return num_failed <= num_tried/2;
4834 }
4835
4836 // IGameDef interface
4837 // Under envlock
4838 IItemDefManager* Server::getItemDefManager()
4839 {
4840         return m_itemdef;
4841 }
4842 INodeDefManager* Server::getNodeDefManager()
4843 {
4844         return m_nodedef;
4845 }
4846 ICraftDefManager* Server::getCraftDefManager()
4847 {
4848         return m_craftdef;
4849 }
4850 ITextureSource* Server::getTextureSource()
4851 {
4852         return NULL;
4853 }
4854 IShaderSource* Server::getShaderSource()
4855 {
4856         return NULL;
4857 }
4858 u16 Server::allocateUnknownNodeId(const std::string &name)
4859 {
4860         return m_nodedef->allocateDummy(name);
4861 }
4862 ISoundManager* Server::getSoundManager()
4863 {
4864         return &dummySoundManager;
4865 }
4866 MtEventManager* Server::getEventManager()
4867 {
4868         return m_event;
4869 }
4870 IRollbackReportSink* Server::getRollbackReportSink()
4871 {
4872         if(!m_enable_rollback_recording)
4873                 return NULL;
4874         if(!m_rollback_sink_enabled)
4875                 return NULL;
4876         return m_rollback;
4877 }
4878
4879 IWritableItemDefManager* Server::getWritableItemDefManager()
4880 {
4881         return m_itemdef;
4882 }
4883 IWritableNodeDefManager* Server::getWritableNodeDefManager()
4884 {
4885         return m_nodedef;
4886 }
4887 IWritableCraftDefManager* Server::getWritableCraftDefManager()
4888 {
4889         return m_craftdef;
4890 }
4891
4892 const ModSpec* Server::getModSpec(const std::string &modname)
4893 {
4894         for(std::vector<ModSpec>::iterator i = m_mods.begin();
4895                         i != m_mods.end(); i++){
4896                 const ModSpec &mod = *i;
4897                 if(mod.name == modname)
4898                         return &mod;
4899         }
4900         return NULL;
4901 }
4902 void Server::getModNames(std::list<std::string> &modlist)
4903 {
4904         for(std::vector<ModSpec>::iterator i = m_mods.begin(); i != m_mods.end(); i++)
4905         {
4906                 modlist.push_back(i->name);
4907         }
4908 }
4909 std::string Server::getBuiltinLuaPath()
4910 {
4911         return porting::path_share + DIR_DELIM + "builtin";
4912 }
4913
4914 v3f findSpawnPos(ServerMap &map)
4915 {
4916         //return v3f(50,50,50)*BS;
4917
4918         v3s16 nodepos;
4919
4920 #if 0
4921         nodepos = v2s16(0,0);
4922         groundheight = 20;
4923 #endif
4924
4925 #if 1
4926         s16 water_level = map.getWaterLevel();
4927
4928         // Try to find a good place a few times
4929         for(s32 i=0; i<1000; i++)
4930         {
4931                 s32 range = 1 + i;
4932                 // We're going to try to throw the player to this position
4933                 v2s16 nodepos2d = v2s16(
4934                                 -range + (myrand() % (range * 2)),
4935                                 -range + (myrand() % (range * 2)));
4936
4937                 // Get ground height at point
4938                 s16 groundheight = map.findGroundLevel(nodepos2d);
4939                 if (groundheight <= water_level) // Don't go underwater
4940                         continue;
4941                 if (groundheight > water_level + 6) // Don't go to high places
4942                         continue;
4943
4944                 nodepos = v3s16(nodepos2d.X, groundheight, nodepos2d.Y);
4945                 bool is_good = false;
4946                 s32 air_count = 0;
4947                 for (s32 i = 0; i < 10; i++) {
4948                         v3s16 blockpos = getNodeBlockPos(nodepos);
4949                         map.emergeBlock(blockpos, true);
4950                         content_t c = map.getNodeNoEx(nodepos).getContent();
4951                         if (c == CONTENT_AIR || c == CONTENT_IGNORE) {
4952                                 air_count++;
4953                                 if (air_count >= 2){
4954                                         is_good = true;
4955                                         break;
4956                                 }
4957                         }
4958                         nodepos.Y++;
4959                 }
4960                 if(is_good){
4961                         // Found a good place
4962                         //infostream<<"Searched through "<<i<<" places."<<std::endl;
4963                         break;
4964                 }
4965         }
4966 #endif
4967
4968         return intToFloat(nodepos, BS);
4969 }
4970
4971 PlayerSAO* Server::emergePlayer(const char *name, u16 peer_id)
4972 {
4973         RemotePlayer *player = NULL;
4974         bool newplayer = false;
4975
4976         /*
4977                 Try to get an existing player
4978         */
4979         player = static_cast<RemotePlayer*>(m_env->getPlayer(name));
4980
4981         // If player is already connected, cancel
4982         if(player != NULL && player->peer_id != 0)
4983         {
4984                 infostream<<"emergePlayer(): Player already connected"<<std::endl;
4985                 return NULL;
4986         }
4987
4988         /*
4989                 If player with the wanted peer_id already exists, cancel.
4990         */
4991         if(m_env->getPlayer(peer_id) != NULL)
4992         {
4993                 infostream<<"emergePlayer(): Player with wrong name but same"
4994                                 " peer_id already exists"<<std::endl;
4995                 return NULL;
4996         }
4997
4998         // Load player if it isn't already loaded
4999         if (!player) {
5000                 player = static_cast<RemotePlayer*>(m_env->loadPlayer(name));
5001         }
5002
5003         // Create player if it doesn't exist
5004         if (!player) {
5005                 newplayer = true;
5006                 player = new RemotePlayer(this);
5007                 player->updateName(name);
5008                 /* Set player position */
5009                 infostream<<"Server: Finding spawn place for player \""
5010                                 <<name<<"\""<<std::endl;
5011                 v3f pos = findSpawnPos(m_env->getServerMap());
5012                 player->setPosition(pos);
5013
5014                 /* Add player to environment */
5015                 m_env->addPlayer(player);
5016         }
5017
5018         // Create a new player active object
5019         PlayerSAO *playersao = new PlayerSAO(m_env, player, peer_id,
5020                         getPlayerEffectivePrivs(player->getName()),
5021                         isSingleplayer());
5022
5023         /* Clean up old HUD elements from previous sessions */
5024         player->clearHud();
5025
5026         /* Add object to environment */
5027         m_env->addActiveObject(playersao);
5028
5029         /* Run scripts */
5030         if (newplayer) {
5031                 m_script->on_newplayer(playersao);
5032         }
5033
5034         return playersao;
5035 }
5036
5037 void dedicated_server_loop(Server &server, bool &kill)
5038 {
5039         DSTACK(__FUNCTION_NAME);
5040
5041         verbosestream<<"dedicated_server_loop()"<<std::endl;
5042
5043         IntervalLimiter m_profiler_interval;
5044
5045         for(;;)
5046         {
5047                 float steplen = g_settings->getFloat("dedicated_server_step");
5048                 // This is kind of a hack but can be done like this
5049                 // because server.step() is very light
5050                 {
5051                         ScopeProfiler sp(g_profiler, "dedicated server sleep");
5052                         sleep_ms((int)(steplen*1000.0));
5053                 }
5054                 server.step(steplen);
5055
5056                 if(server.getShutdownRequested() || kill)
5057                 {
5058                         infostream<<"Dedicated server quitting"<<std::endl;
5059 #if USE_CURL
5060                         if(g_settings->getBool("server_announce") == true)
5061                                 ServerList::sendAnnounce("delete");
5062 #endif
5063                         break;
5064                 }
5065
5066                 /*
5067                         Profiler
5068                 */
5069                 float profiler_print_interval =
5070                                 g_settings->getFloat("profiler_print_interval");
5071                 if(profiler_print_interval != 0)
5072                 {
5073                         if(m_profiler_interval.step(steplen, profiler_print_interval))
5074                         {
5075                                 infostream<<"Profiler:"<<std::endl;
5076                                 g_profiler->print(infostream);
5077                                 g_profiler->clear();
5078                         }
5079                 }
5080         }
5081 }
5082
5083