src/server.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU 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 "utility.h"
  22 #include <iostream>
  23 #include "clientserver.h"
  24 #include "map.h"
  25 #include "jmutexautolock.h"
  26 #include "main.h"
  27 #include "constants.h"
  28 #include "voxel.h"
  29 #include "materials.h"
  30 #include "mineral.h"
  31 #include "config.h"
  32 #include "servercommand.h"
  33 #include "filesys.h"
  34 #include "content_mapnode.h"
  35 #include "content_craft.h"
  36 #include "content_nodemeta.h"
  37 #include "mapblock.h"
  38 #include "serverobject.h"
  39
  40 #define BLOCK_EMERGE_FLAG_FROMDISK (1<<0)
  41
  42 class MapEditEventIgnorer
  43 {
  44 public:
  45         MapEditEventIgnorer(bool *flag):
  46                 m_flag(flag)
  47         {
  48                 if(*m_flag == false)
  49                         *m_flag = true;
  50                 else
  51                         m_flag = NULL;
  52         }
  53
  54         ~MapEditEventIgnorer()
  55         {
  56                 if(m_flag)
  57                 {
  58                         assert(*m_flag);
  59                         *m_flag = false;
  60                 }
  61         }
  62
  63 private:
  64         bool *m_flag;
  65 };
  66
  67 void * ServerThread::Thread()
  68 {
  69         ThreadStarted();
  70
  71         DSTACK(__FUNCTION_NAME);
  72
  73         BEGIN_DEBUG_EXCEPTION_HANDLER
  74
  75         while(getRun())
  76         {
  77                 try{
  78                         //TimeTaker timer("AsyncRunStep() + Receive()");
  79
  80                         {
  81                                 //TimeTaker timer("AsyncRunStep()");
  82                                 m_server->AsyncRunStep();
  83                         }
  84
  85                         //dout_server<<"Running m_server->Receive()"<<std::endl;
  86                         m_server->Receive();
  87                 }
  88                 catch(con::NoIncomingDataException &e)
  89                 {
  90                 }
  91                 catch(con::PeerNotFoundException &e)
  92                 {
  93                         dout_server<<"Server: PeerNotFoundException"<<std::endl;
  94                 }
  95         }
  96
  97         END_DEBUG_EXCEPTION_HANDLER
  98
  99         return NULL;
 100 }
 101
 102 void * EmergeThread::Thread()
 103 {
 104         ThreadStarted();
 105
 106         DSTACK(__FUNCTION_NAME);
 107
 108         BEGIN_DEBUG_EXCEPTION_HANDLER
 109
 110         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
 111
 112         /*
 113                 Get block info from queue, emerge them and send them
 114                 to clients.
 115
 116                 After queue is empty, exit.
 117         */
 118         while(getRun())
 119         {
 120                 QueuedBlockEmerge *qptr = m_server->m_emerge_queue.pop();
 121                 if(qptr == NULL)
 122                         break;
 123
 124                 SharedPtr<QueuedBlockEmerge> q(qptr);
 125
 126                 v3s16 &p = q->pos;
 127                 v2s16 p2d(p.X,p.Z);
 128
 129                 /*
 130                         Do not generate over-limit
 131                 */
 132                 if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 133                 || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 134                 || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 135                 || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 136                 || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 137                 || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 138                         continue;
 139
 140                 //derr_server<<"EmergeThread::Thread(): running"<<std::endl;
 141
 142                 //TimeTaker timer("block emerge");
 143
 144                 /*
 145                         Try to emerge it from somewhere.
 146
 147                         If it is only wanted as optional, only loading from disk
 148                         will be allowed.
 149                 */
 150
 151                 /*
 152                         Check if any peer wants it as non-optional. In that case it
 153                         will be generated.
 154
 155                         Also decrement the emerge queue count in clients.
 156                 */
 157
 158                 bool only_from_disk = true;
 159
 160                 {
 161                         core::map<u16, u8>::Iterator i;
 162                         for(i=q->peer_ids.getIterator(); i.atEnd()==false; i++)
 163                         {
 164                                 //u16 peer_id = i.getNode()->getKey();
 165
 166                                 // Check flags
 167                                 u8 flags = i.getNode()->getValue();
 168                                 if((flags & BLOCK_EMERGE_FLAG_FROMDISK) == false)
 169                                         only_from_disk = false;
 170
 171                         }
 172                 }
 173
 174                 if(enable_mapgen_debug_info)
 175                         dstream<<"EmergeThread: p="
 176                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
 177                                         <<"only_from_disk="<<only_from_disk<<std::endl;
 178
 179                 ServerMap &map = ((ServerMap&)m_server->m_env.getMap());
 180
 181                 //core::map<v3s16, MapBlock*> changed_blocks;
 182                 //core::map<v3s16, MapBlock*> lighting_invalidated_blocks;
 183
 184                 MapBlock *block = NULL;
 185                 bool got_block = true;
 186                 core::map<v3s16, MapBlock*> modified_blocks;
 187
 188                 /*
 189                         Fetch block from map or generate a single block
 190                 */
 191                 {
 192                         JMutexAutoLock envlock(m_server->m_env_mutex);
 193
 194                         // Load sector if it isn't loaded
 195                         if(map.getSectorNoGenerateNoEx(p2d) == NULL)
 196                                 //map.loadSectorFull(p2d);
 197                                 map.loadSectorMeta(p2d);
 198
 199                         block = map.getBlockNoCreateNoEx(p);
 200                         if(!block || block->isDummy() || !block->isGenerated())
 201                         {
 202                                 if(enable_mapgen_debug_info)
 203                                         dstream<<"EmergeThread: not in memory, loading"<<std::endl;
 204
 205                                 // Get, load or create sector
 206                                 /*ServerMapSector *sector =
 207                                                 (ServerMapSector*)map.createSector(p2d);*/
 208
 209                                 // Load/generate block
 210
 211                                 /*block = map.emergeBlock(p, sector, changed_blocks,
 212                                                 lighting_invalidated_blocks);*/
 213
 214                                 block = map.loadBlock(p);
 215
 216                                 if(only_from_disk == false)
 217                                 {
 218                                         if(block == NULL || block->isGenerated() == false)
 219                                         {
 220                                                 if(enable_mapgen_debug_info)
 221                                                         dstream<<"EmergeThread: generating"<<std::endl;
 222                                                 block = map.generateBlock(p, modified_blocks);
 223                                         }
 224                                 }
 225
 226                                 if(enable_mapgen_debug_info)
 227                                         dstream<<"EmergeThread: ended up with: "
 228                                                         <<analyze_block(block)<<std::endl;
 229
 230                                 if(block == NULL)
 231                                 {
 232                                         got_block = false;
 233                                 }
 234                                 else
 235                                 {
 236                                         /*
 237                                                 Ignore map edit events, they will not need to be
 238                                                 sent to anybody because the block hasn't been sent
 239                                                 to anybody
 240                                         */
 241                                         MapEditEventIgnorer ign(&m_server->m_ignore_map_edit_events);
 242
 243                                         // Activate objects and stuff
 244                                         m_server->m_env.activateBlock(block, 3600);
 245                                 }
 246                         }
 247                         else
 248                         {
 249                                 /*if(block->getLightingExpired()){
 250                                         lighting_invalidated_blocks[block->getPos()] = block;
 251                                 }*/
 252                         }
 253
 254                         // TODO: Some additional checking and lighting updating,
 255                         //       see emergeBlock
 256                 }
 257
 258                 {//envlock
 259                 JMutexAutoLock envlock(m_server->m_env_mutex);
 260
 261                 if(got_block)
 262                 {
 263                         /*
 264                                 Collect a list of blocks that have been modified in
 265                                 addition to the fetched one.
 266                         */
 267
 268 #if 0
 269                         if(lighting_invalidated_blocks.size() > 0)
 270                         {
 271                                 /*dstream<<"lighting "<<lighting_invalidated_blocks.size()
 272                                                 <<" blocks"<<std::endl;*/
 273
 274                                 // 50-100ms for single block generation
 275                                 //TimeTaker timer("** EmergeThread updateLighting");
 276
 277                                 // Update lighting without locking the environment mutex,
 278                                 // add modified blocks to changed blocks
 279                                 map.updateLighting(lighting_invalidated_blocks, modified_blocks);
 280                         }
 281
 282                         // Add all from changed_blocks to modified_blocks
 283                         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
 284                                         i.atEnd() == false; i++)
 285                         {
 286                                 MapBlock *block = i.getNode()->getValue();
 287                                 modified_blocks.insert(block->getPos(), block);
 288                         }
 289 #endif
 290                 }
 291                 // If we got no block, there should be no invalidated blocks
 292                 else
 293                 {
 294                         //assert(lighting_invalidated_blocks.size() == 0);
 295                 }
 296
 297                 }//envlock
 298
 299                 /*
 300                         Set sent status of modified blocks on clients
 301                 */
 302
 303                 // NOTE: Server's clients are also behind the connection mutex
 304                 JMutexAutoLock lock(m_server->m_con_mutex);
 305
 306                 /*
 307                         Add the originally fetched block to the modified list
 308                 */
 309                 if(got_block)
 310                 {
 311                         modified_blocks.insert(p, block);
 312                 }
 313
 314                 /*
 315                         Set the modified blocks unsent for all the clients
 316                 */
 317
 318                 for(core::map<u16, RemoteClient*>::Iterator
 319                                 i = m_server->m_clients.getIterator();
 320                                 i.atEnd() == false; i++)
 321                 {
 322                         RemoteClient *client = i.getNode()->getValue();
 323
 324                         if(modified_blocks.size() > 0)
 325                         {
 326                                 // Remove block from sent history
 327                                 client->SetBlocksNotSent(modified_blocks);
 328                         }
 329                 }
 330
 331         }
 332
 333         END_DEBUG_EXCEPTION_HANDLER
 334
 335         return NULL;
 336 }
 337
 338 void RemoteClient::GetNextBlocks(Server *server, float dtime,
 339                 core::array<PrioritySortedBlockTransfer> &dest)
 340 {
 341         DSTACK(__FUNCTION_NAME);
 342
 343         /*u32 timer_result;
 344         TimeTaker timer("RemoteClient::GetNextBlocks", &timer_result);*/
 345
 346         // Increment timers
 347         m_nothing_to_send_pause_timer -= dtime;
 348
 349         if(m_nothing_to_send_pause_timer >= 0)
 350         {
 351                 // Keep this reset
 352                 m_nearest_unsent_reset_timer = 0;
 353                 return;
 354         }
 355
 356         // Won't send anything if already sending
 357         if(m_blocks_sending.size() >= g_settings.getU16
 358                         ("max_simultaneous_block_sends_per_client"))
 359         {
 360                 //dstream<<"Not sending any blocks, Queue full."<<std::endl;
 361                 return;
 362         }
 363
 364         //TimeTaker timer("RemoteClient::GetNextBlocks");
 365
 366         Player *player = server->m_env.getPlayer(peer_id);
 367
 368         assert(player != NULL);
 369
 370         v3f playerpos = player->getPosition();
 371         v3f playerspeed = player->getSpeed();
 372         v3f playerspeeddir(0,0,0);
 373         if(playerspeed.getLength() > 1.0*BS)
 374                 playerspeeddir = playerspeed / playerspeed.getLength();
 375         // Predict to next block
 376         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
 377
 378         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
 379
 380         v3s16 center = getNodeBlockPos(center_nodepos);
 381
 382         // Camera position and direction
 383         v3f camera_pos =
 384                         playerpos + v3f(0, BS+BS/2, 0);
 385         v3f camera_dir = v3f(0,0,1);
 386         camera_dir.rotateYZBy(player->getPitch());
 387         camera_dir.rotateXZBy(player->getYaw());
 388
 389         /*dstream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 390                         <<camera_dir.Z<<")"<<std::endl;*/
 391
 392         /*
 393                 Get the starting value of the block finder radius.
 394         */
 395
 396         if(m_last_center != center)
 397         {
 398                 m_nearest_unsent_d = 0;
 399                 m_last_center = center;
 400         }
 401
 402         /*dstream<<"m_nearest_unsent_reset_timer="
 403                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 404
 405         // This has to be incremented only when the nothing to send pause
 406         // is not active
 407         m_nearest_unsent_reset_timer += dtime;
 408
 409         // Reset periodically to avoid possible bugs or other mishaps
 410         if(m_nearest_unsent_reset_timer > 10.0)
 411         {
 412                 m_nearest_unsent_reset_timer = 0;
 413                 m_nearest_unsent_d = 0;
 414                 /*dstream<<"Resetting m_nearest_unsent_d for "
 415                                 <<server->getPlayerName(peer_id)<<std::endl;*/
 416         }
 417
 418         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 419         s16 d_start = m_nearest_unsent_d;
 420
 421         //dstream<<"d_start="<<d_start<<std::endl;
 422
 423         u16 max_simul_sends_setting = g_settings.getU16
 424                         ("max_simultaneous_block_sends_per_client");
 425         u16 max_simul_sends_usually = max_simul_sends_setting;
 426
 427         /*
 428                 Check the time from last addNode/removeNode.
 429
 430                 Decrease send rate if player is building stuff.
 431         */
 432         m_time_from_building += dtime;
 433         if(m_time_from_building < g_settings.getFloat(
 434                                 "full_block_send_enable_min_time_from_building"))
 435         {
 436                 max_simul_sends_usually
 437                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 438         }
 439
 440         /*
 441                 Number of blocks sending + number of blocks selected for sending
 442         */
 443         u32 num_blocks_selected = m_blocks_sending.size();
 444
 445         /*
 446                 next time d will be continued from the d from which the nearest
 447                 unsent block was found this time.
 448
 449                 This is because not necessarily any of the blocks found this
 450                 time are actually sent.
 451         */
 452         s32 new_nearest_unsent_d = -1;
 453
 454         s16 d_max = g_settings.getS16("max_block_send_distance");
 455         s16 d_max_gen = g_settings.getS16("max_block_generate_distance");
 456
 457         // Don't loop very much at a time
 458         if(d_max > d_start+1)
 459                 d_max = d_start+1;
 460         /*if(d_max_gen > d_start+2)
 461                 d_max_gen = d_start+2;*/
 462
 463         //dstream<<"Starting from "<<d_start<<std::endl;
 464
 465         bool sending_something = false;
 466
 467         bool no_blocks_found_for_sending = true;
 468
 469         bool queue_is_full = false;
 470
 471         s16 d;
 472         for(d = d_start; d <= d_max; d++)
 473         {
 474                 //dstream<<"RemoteClient::SendBlocks(): d="<<d<<std::endl;
 475
 476                 /*
 477                         If m_nearest_unsent_d was changed by the EmergeThread
 478                         (it can change it to 0 through SetBlockNotSent),
 479                         update our d to it.
 480                         Else update m_nearest_unsent_d
 481                 */
 482                 /*if(m_nearest_unsent_d != last_nearest_unsent_d)
 483                 {
 484                         d = m_nearest_unsent_d;
 485                         last_nearest_unsent_d = m_nearest_unsent_d;
 486                 }*/
 487
 488                 /*
 489                         Get the border/face dot coordinates of a "d-radiused"
 490                         box
 491                 */
 492                 core::list<v3s16> list;
 493                 getFacePositions(list, d);
 494
 495                 core::list<v3s16>::Iterator li;
 496                 for(li=list.begin(); li!=list.end(); li++)
 497                 {
 498                         v3s16 p = *li + center;
 499
 500                         /*
 501                                 Send throttling
 502                                 - Don't allow too many simultaneous transfers
 503                                 - EXCEPT when the blocks are very close
 504
 505                                 Also, don't send blocks that are already flying.
 506                         */
 507
 508                         // Start with the usual maximum
 509                         u16 max_simul_dynamic = max_simul_sends_usually;
 510
 511                         // If block is very close, allow full maximum
 512                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 513                                 max_simul_dynamic = max_simul_sends_setting;
 514
 515                         // Don't select too many blocks for sending
 516                         if(num_blocks_selected >= max_simul_dynamic)
 517                         {
 518                                 queue_is_full = true;
 519                                 goto queue_full_break;
 520                         }
 521
 522                         // Don't send blocks that are currently being transferred
 523                         if(m_blocks_sending.find(p) != NULL)
 524                                 continue;
 525
 526                         /*
 527                                 Do not go over-limit
 528                         */
 529                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 530                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 531                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 532                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 533                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 534                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 535                                 continue;
 536
 537                         // If this is true, inexistent block will be made from scratch
 538                         bool generate = d <= d_max_gen;
 539
 540                         {
 541                                 /*// Limit the generating area vertically to 2/3
 542                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 543                                         generate = false;*/
 544
 545                                 // Limit the send area vertically to 2/3
 546                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 547                                         continue;
 548                         }
 549
 550 #if 1
 551                         /*
 552                                 If block is far away, don't generate it unless it is
 553                                 near ground level.
 554                         */
 555                         if(d >= 4)
 556                         {
 557         #if 1
 558                                 // Block center y in nodes
 559                                 f32 y = (f32)(p.Y * MAP_BLOCKSIZE + MAP_BLOCKSIZE/2);
 560                                 // Don't generate if it's very high or very low
 561                                 if(y < -64 || y > 64)
 562                                         generate = false;
 563         #endif
 564         #if 0
 565                                 v2s16 p2d_nodes_center(
 566                                         MAP_BLOCKSIZE*p.X,
 567                                         MAP_BLOCKSIZE*p.Z);
 568
 569                                 // Get ground height in nodes
 570                                 s16 gh = server->m_env.getServerMap().findGroundLevel(
 571                                                 p2d_nodes_center);
 572
 573                                 // If differs a lot, don't generate
 574                                 if(fabs(gh - y) > MAP_BLOCKSIZE*2)
 575                                         generate = false;
 576                                         // Actually, don't even send it
 577                                         //continue;
 578         #endif
 579                         }
 580 #endif
 581
 582                         //dstream<<"d="<<d<<std::endl;
 583
 584                         /*
 585                                 Don't generate or send if not in sight
 586                         */
 587
 588                         if(isBlockInSight(p, camera_pos, camera_dir, 10000*BS) == false)
 589                         {
 590                                 continue;
 591                         }
 592
 593                         /*
 594                                 Don't send already sent blocks
 595                         */
 596                         {
 597                                 if(m_blocks_sent.find(p) != NULL)
 598                                 {
 599                                         continue;
 600                                 }
 601                         }
 602
 603                         /*
 604                                 Check if map has this block
 605                         */
 606                         MapBlock *block = server->m_env.getMap().getBlockNoCreateNoEx(p);
 607
 608                         bool surely_not_found_on_disk = false;
 609                         bool block_is_invalid = false;
 610                         if(block != NULL)
 611                         {
 612                                 // Reset usage timer, this block will be of use in the future.
 613                                 block->resetUsageTimer();
 614
 615                                 // Block is dummy if data doesn't exist.
 616                                 // It means it has been not found from disk and not generated
 617                                 if(block->isDummy())
 618                                 {
 619                                         surely_not_found_on_disk = true;
 620                                 }
 621
 622                                 // Block is valid if lighting is up-to-date and data exists
 623                                 if(block->isValid() == false)
 624                                 {
 625                                         block_is_invalid = true;
 626                                 }
 627
 628                                 /*if(block->isFullyGenerated() == false)
 629                                 {
 630                                         block_is_invalid = true;
 631                                 }*/
 632
 633 #if 0
 634                                 v2s16 p2d(p.X, p.Z);
 635                                 ServerMap *map = (ServerMap*)(&server->m_env.getMap());
 636                                 v2s16 chunkpos = map->sector_to_chunk(p2d);
 637                                 if(map->chunkNonVolatile(chunkpos) == false)
 638                                         block_is_invalid = true;
 639 #endif
 640                                 if(block->isGenerated() == false)
 641                                         block_is_invalid = true;
 642 #if 1
 643                                 /*
 644                                         If block is not close, don't send it unless it is near
 645                                         ground level.
 646
 647                                         Block is near ground level if night-time mesh
 648                                         differs from day-time mesh.
 649                                 */
 650                                 if(d > 3)
 651                                 {
 652                                         if(block->dayNightDiffed() == false)
 653                                                 continue;
 654                                 }
 655 #endif
 656                         }
 657
 658                         /*
 659                                 If block has been marked to not exist on disk (dummy)
 660                                 and generating new ones is not wanted, skip block.
 661                         */
 662                         if(generate == false && surely_not_found_on_disk == true)
 663                         {
 664                                 // get next one.
 665                                 continue;
 666                         }
 667
 668                         /*
 669                                 Record the lowest d from which a block has been
 670                                 found being not sent and possibly to exist
 671                         */
 672                         if(no_blocks_found_for_sending)
 673                         {
 674                                 if(generate == true)
 675                                         new_nearest_unsent_d = d;
 676                         }
 677
 678                         no_blocks_found_for_sending = false;
 679
 680                         /*
 681                                 Add inexistent block to emerge queue.
 682                         */
 683                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 684                         {
 685                                 //TODO: Get value from somewhere
 686                                 // Allow only one block in emerge queue
 687                                 //if(server->m_emerge_queue.peerItemCount(peer_id) < 1)
 688                                 // Allow two blocks in queue per client
 689                                 if(server->m_emerge_queue.peerItemCount(peer_id) < 2)
 690                                 {
 691                                         //dstream<<"Adding block to emerge queue"<<std::endl;
 692
 693                                         // Add it to the emerge queue and trigger the thread
 694
 695                                         u8 flags = 0;
 696                                         if(generate == false)
 697                                                 flags |= BLOCK_EMERGE_FLAG_FROMDISK;
 698
 699                                         server->m_emerge_queue.addBlock(peer_id, p, flags);
 700                                         server->m_emergethread.trigger();
 701                                 }
 702
 703                                 // get next one.
 704                                 continue;
 705                         }
 706
 707                         /*
 708                                 Add block to send queue
 709                         */
 710
 711                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 712
 713                         dest.push_back(q);
 714
 715                         num_blocks_selected += 1;
 716                         sending_something = true;
 717                 }
 718         }
 719 queue_full_break:
 720
 721         //dstream<<"Stopped at "<<d<<std::endl;
 722
 723         if(no_blocks_found_for_sending)
 724         {
 725                 if(queue_is_full == false)
 726                         new_nearest_unsent_d = d;
 727         }
 728
 729         if(new_nearest_unsent_d != -1)
 730                 m_nearest_unsent_d = new_nearest_unsent_d;
 731
 732         if(sending_something == false)
 733         {
 734                 m_nothing_to_send_counter++;
 735                 if((s16)m_nothing_to_send_counter >=
 736                                 g_settings.getS16("max_block_send_distance"))
 737                 {
 738                         // Pause time in seconds
 739                         m_nothing_to_send_pause_timer = 1.0;
 740                         /*dstream<<"nothing to send to "
 741                                         <<server->getPlayerName(peer_id)
 742                                         <<" (d="<<d<<")"<<std::endl;*/
 743                 }
 744         }
 745         else
 746         {
 747                 m_nothing_to_send_counter = 0;
 748         }
 749
 750         /*timer_result = timer.stop(true);
 751         if(timer_result != 0)
 752                 dstream<<"GetNextBlocks duration: "<<timer_result<<" (!=0)"<<std::endl;*/
 753 }
 754
 755 void RemoteClient::SendObjectData(
 756                 Server *server,
 757                 float dtime,
 758                 core::map<v3s16, bool> &stepped_blocks
 759         )
 760 {
 761         DSTACK(__FUNCTION_NAME);
 762
 763         // Can't send anything without knowing version
 764         if(serialization_version == SER_FMT_VER_INVALID)
 765         {
 766                 dstream<<"RemoteClient::SendObjectData(): Not sending, no version."
 767                                 <<std::endl;
 768                 return;
 769         }
 770
 771         /*
 772                 Send a TOCLIENT_OBJECTDATA packet.
 773                 Sent as unreliable.
 774
 775                 u16 command
 776                 u16 number of player positions
 777                 for each player:
 778                         v3s32 position*100
 779                         v3s32 speed*100
 780                         s32 pitch*100
 781                         s32 yaw*100
 782                 u16 count of blocks
 783                 for each block:
 784                         block objects
 785         */
 786
 787         std::ostringstream os(std::ios_base::binary);
 788         u8 buf[12];
 789
 790         // Write command
 791         writeU16(buf, TOCLIENT_OBJECTDATA);
 792         os.write((char*)buf, 2);
 793
 794         /*
 795                 Get and write player data
 796         */
 797
 798         // Get connected players
 799         core::list<Player*> players = server->m_env.getPlayers(true);
 800
 801         // Write player count
 802         u16 playercount = players.size();
 803         writeU16(buf, playercount);
 804         os.write((char*)buf, 2);
 805
 806         core::list<Player*>::Iterator i;
 807         for(i = players.begin();
 808                         i != players.end(); i++)
 809         {
 810                 Player *player = *i;
 811
 812                 v3f pf = player->getPosition();
 813                 v3f sf = player->getSpeed();
 814
 815                 v3s32 position_i(pf.X*100, pf.Y*100, pf.Z*100);
 816                 v3s32 speed_i   (sf.X*100, sf.Y*100, sf.Z*100);
 817                 s32   pitch_i   (player->getPitch() * 100);
 818                 s32   yaw_i     (player->getYaw() * 100);
 819
 820                 writeU16(buf, player->peer_id);
 821                 os.write((char*)buf, 2);
 822                 writeV3S32(buf, position_i);
 823                 os.write((char*)buf, 12);
 824                 writeV3S32(buf, speed_i);
 825                 os.write((char*)buf, 12);
 826                 writeS32(buf, pitch_i);
 827                 os.write((char*)buf, 4);
 828                 writeS32(buf, yaw_i);
 829                 os.write((char*)buf, 4);
 830         }
 831
 832         /*
 833                 Get and write object data
 834         */
 835
 836         /*
 837                 Get nearby blocks.
 838
 839                 For making players to be able to build to their nearby
 840                 environment (building is not possible on blocks that are not
 841                 in memory):
 842                 - Set blocks changed
 843                 - Add blocks to emerge queue if they are not found
 844
 845                 SUGGESTION: These could be ignored from the backside of the player
 846         */
 847
 848         Player *player = server->m_env.getPlayer(peer_id);
 849
 850         assert(player);
 851
 852         v3f playerpos = player->getPosition();
 853         v3f playerspeed = player->getSpeed();
 854
 855         v3s16 center_nodepos = floatToInt(playerpos, BS);
 856         v3s16 center = getNodeBlockPos(center_nodepos);
 857
 858         s16 d_max = g_settings.getS16("active_object_range");
 859
 860         // Number of blocks whose objects were written to bos
 861         u16 blockcount = 0;
 862
 863         std::ostringstream bos(std::ios_base::binary);
 864
 865         for(s16 d = 0; d <= d_max; d++)
 866         {
 867                 core::list<v3s16> list;
 868                 getFacePositions(list, d);
 869
 870                 core::list<v3s16>::Iterator li;
 871                 for(li=list.begin(); li!=list.end(); li++)
 872                 {
 873                         v3s16 p = *li + center;
 874
 875                         /*
 876                                 Ignore blocks that haven't been sent to the client
 877                         */
 878                         {
 879                                 if(m_blocks_sent.find(p) == NULL)
 880                                         continue;
 881                         }
 882
 883                         // Try stepping block and add it to a send queue
 884                         try
 885                         {
 886
 887                         // Get block
 888                         MapBlock *block = server->m_env.getMap().getBlockNoCreate(p);
 889
 890                         /*
 891                                 Step block if not in stepped_blocks and add to stepped_blocks.
 892                         */
 893                         if(stepped_blocks.find(p) == NULL)
 894                         {
 895                                 block->stepObjects(dtime, true, server->m_env.getDayNightRatio());
 896                                 stepped_blocks.insert(p, true);
 897                                 block->setChangedFlag();
 898                         }
 899
 900                         // Skip block if there are no objects
 901                         if(block->getObjectCount() == 0)
 902                                 continue;
 903
 904                         /*
 905                                 Write objects
 906                         */
 907
 908                         // Write blockpos
 909                         writeV3S16(buf, p);
 910                         bos.write((char*)buf, 6);
 911
 912                         // Write objects
 913                         //block->serializeObjects(bos, serialization_version); // DEPRECATED
 914                         // count=0
 915                         writeU16(bos, 0);
 916
 917                         blockcount++;
 918
 919                         /*
 920                                 Stop collecting objects if data is already too big
 921                         */
 922                         // Sum of player and object data sizes
 923                         s32 sum = (s32)os.tellp() + 2 + (s32)bos.tellp();
 924                         // break out if data too big
 925                         if(sum > MAX_OBJECTDATA_SIZE)
 926                         {
 927                                 goto skip_subsequent;
 928                         }
 929
 930                         } //try
 931                         catch(InvalidPositionException &e)
 932                         {
 933                                 // Not in memory
 934                                 // Add it to the emerge queue and trigger the thread.
 935                                 // Fetch the block only if it is on disk.
 936
 937                                 // Grab and increment counter
 938                                 /*SharedPtr<JMutexAutoLock> lock
 939                                                 (m_num_blocks_in_emerge_queue.getLock());
 940                                 m_num_blocks_in_emerge_queue.m_value++;*/
 941
 942                                 // Add to queue as an anonymous fetch from disk
 943                                 u8 flags = BLOCK_EMERGE_FLAG_FROMDISK;
 944                                 server->m_emerge_queue.addBlock(0, p, flags);
 945                                 server->m_emergethread.trigger();
 946                         }
 947                 }
 948         }
 949
 950 skip_subsequent:
 951
 952         // Write block count
 953         writeU16(buf, blockcount);
 954         os.write((char*)buf, 2);
 955
 956         // Write block objects
 957         os<<bos.str();
 958
 959         /*
 960                 Send data
 961         */
 962
 963         //dstream<<"Server: Sending object data to "<<peer_id<<std::endl;
 964
 965         // Make data buffer
 966         std::string s = os.str();
 967         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
 968         // Send as unreliable
 969         server->m_con.Send(peer_id, 0, data, false);
 970 }
 971
 972 void RemoteClient::GotBlock(v3s16 p)
 973 {
 974         if(m_blocks_sending.find(p) != NULL)
 975                 m_blocks_sending.remove(p);
 976         else
 977         {
 978                 /*dstream<<"RemoteClient::GotBlock(): Didn't find in"
 979                                 " m_blocks_sending"<<std::endl;*/
 980                 m_excess_gotblocks++;
 981         }
 982         m_blocks_sent.insert(p, true);
 983 }
 984
 985 void RemoteClient::SentBlock(v3s16 p)
 986 {
 987         if(m_blocks_sending.find(p) == NULL)
 988                 m_blocks_sending.insert(p, 0.0);
 989         else
 990                 dstream<<"RemoteClient::SentBlock(): Sent block"
 991                                 " already in m_blocks_sending"<<std::endl;
 992 }
 993
 994 void RemoteClient::SetBlockNotSent(v3s16 p)
 995 {
 996         m_nearest_unsent_d = 0;
 997
 998         if(m_blocks_sending.find(p) != NULL)
 999                 m_blocks_sending.remove(p);
1000         if(m_blocks_sent.find(p) != NULL)
1001                 m_blocks_sent.remove(p);
1002 }
1003
1004 void RemoteClient::SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks)
1005 {
1006         m_nearest_unsent_d = 0;
1007
1008         for(core::map<v3s16, MapBlock*>::Iterator
1009                         i = blocks.getIterator();
1010                         i.atEnd()==false; i++)
1011         {
1012                 v3s16 p = i.getNode()->getKey();
1013
1014                 if(m_blocks_sending.find(p) != NULL)
1015                         m_blocks_sending.remove(p);
1016                 if(m_blocks_sent.find(p) != NULL)
1017                         m_blocks_sent.remove(p);
1018         }
1019 }
1020
1021 /*
1022         PlayerInfo
1023 */
1024
1025 PlayerInfo::PlayerInfo()
1026 {
1027         name[0] = 0;
1028         avg_rtt = 0;
1029 }
1030
1031 void PlayerInfo::PrintLine(std::ostream *s)
1032 {
1033         (*s)<<id<<": ";
1034         (*s)<<"\""<<name<<"\" ("
1035                         <<(position.X/10)<<","<<(position.Y/10)
1036                         <<","<<(position.Z/10)<<") ";
1037         address.print(s);
1038         (*s)<<" avg_rtt="<<avg_rtt;
1039         (*s)<<std::endl;
1040 }
1041
1042 u32 PIChecksum(core::list<PlayerInfo> &l)
1043 {
1044         core::list<PlayerInfo>::Iterator i;
1045         u32 checksum = 1;
1046         u32 a = 10;
1047         for(i=l.begin(); i!=l.end(); i++)
1048         {
1049                 checksum += a * (i->id+1);
1050                 checksum ^= 0x435aafcd;
1051                 a *= 10;
1052         }
1053         return checksum;
1054 }
1055
1056 /*
1057         Server
1058 */
1059
1060 Server::Server(
1061                 std::string mapsavedir,
1062                 std::string configpath
1063         ):
1064         m_env(new ServerMap(mapsavedir), this),
1065         m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
1066         m_authmanager(mapsavedir+"/auth.txt"),
1067         m_thread(this),
1068         m_emergethread(this),
1069         m_time_counter(0),
1070         m_time_of_day_send_timer(0),
1071         m_uptime(0),
1072         m_mapsavedir(mapsavedir),
1073         m_configpath(configpath),
1074         m_shutdown_requested(false),
1075         m_ignore_map_edit_events(false),
1076         m_ignore_map_edit_events_peer_id(0)
1077 {
1078         m_liquid_transform_timer = 0.0;
1079         m_print_info_timer = 0.0;
1080         m_objectdata_timer = 0.0;
1081         m_emergethread_trigger_timer = 0.0;
1082         m_savemap_timer = 0.0;
1083
1084         m_env_mutex.Init();
1085         m_con_mutex.Init();
1086         m_step_dtime_mutex.Init();
1087         m_step_dtime = 0.0;
1088
1089         // Register us to receive map edit events
1090         m_env.getMap().addEventReceiver(this);
1091
1092         // If file exists, load environment metadata
1093         if(fs::PathExists(m_mapsavedir+"/env_meta.txt"))
1094         {
1095                 dstream<<"Server: Loading environment metadata"<<std::endl;
1096                 m_env.loadMeta(m_mapsavedir);
1097         }
1098
1099         // Load players
1100         dstream<<"Server: Loading players"<<std::endl;
1101         m_env.deSerializePlayers(m_mapsavedir);
1102 }
1103
1104 Server::~Server()
1105 {
1106         dstream<<"Server::~Server()"<<std::endl;
1107
1108         /*
1109                 Send shutdown message
1110         */
1111         {
1112                 JMutexAutoLock conlock(m_con_mutex);
1113
1114                 std::wstring line = L"*** Server shutting down";
1115
1116                 /*
1117                         Send the message to clients
1118                 */
1119                 for(core::map<u16, RemoteClient*>::Iterator
1120                         i = m_clients.getIterator();
1121                         i.atEnd() == false; i++)
1122                 {
1123                         // Get client and check that it is valid
1124                         RemoteClient *client = i.getNode()->getValue();
1125                         assert(client->peer_id == i.getNode()->getKey());
1126                         if(client->serialization_version == SER_FMT_VER_INVALID)
1127                                 continue;
1128
1129                         try{
1130                                 SendChatMessage(client->peer_id, line);
1131                         }
1132                         catch(con::PeerNotFoundException &e)
1133                         {}
1134                 }
1135         }
1136
1137         /*
1138                 Save players
1139         */
1140         dstream<<"Server: Saving players"<<std::endl;
1141         m_env.serializePlayers(m_mapsavedir);
1142
1143         /*
1144                 Save environment metadata
1145         */
1146         dstream<<"Server: Saving environment metadata"<<std::endl;
1147         m_env.saveMeta(m_mapsavedir);
1148
1149         /*
1150                 Stop threads
1151         */
1152         stop();
1153
1154         /*
1155                 Delete clients
1156         */
1157         {
1158                 JMutexAutoLock clientslock(m_con_mutex);
1159
1160                 for(core::map<u16, RemoteClient*>::Iterator
1161                         i = m_clients.getIterator();
1162                         i.atEnd() == false; i++)
1163                 {
1164                         /*// Delete player
1165                         // NOTE: These are removed by env destructor
1166                         {
1167                                 u16 peer_id = i.getNode()->getKey();
1168                                 JMutexAutoLock envlock(m_env_mutex);
1169                                 m_env.removePlayer(peer_id);
1170                         }*/
1171
1172                         // Delete client
1173                         delete i.getNode()->getValue();
1174                 }
1175         }
1176 }
1177
1178 void Server::start(unsigned short port)
1179 {
1180         DSTACK(__FUNCTION_NAME);
1181         // Stop thread if already running
1182         m_thread.stop();
1183
1184         // Initialize connection
1185         m_con.setTimeoutMs(30);
1186         m_con.Serve(port);
1187
1188         // Start thread
1189         m_thread.setRun(true);
1190         m_thread.Start();
1191
1192         dout_server<<"Server: Started on port "<<port<<std::endl;
1193 }
1194
1195 void Server::stop()
1196 {
1197         DSTACK(__FUNCTION_NAME);
1198
1199         // Stop threads (set run=false first so both start stopping)
1200         m_thread.setRun(false);
1201         m_emergethread.setRun(false);
1202         m_thread.stop();
1203         m_emergethread.stop();
1204
1205         dout_server<<"Server: Threads stopped"<<std::endl;
1206 }
1207
1208 void Server::step(float dtime)
1209 {
1210         DSTACK(__FUNCTION_NAME);
1211         // Limit a bit
1212         if(dtime > 2.0)
1213                 dtime = 2.0;
1214         {
1215                 JMutexAutoLock lock(m_step_dtime_mutex);
1216                 m_step_dtime += dtime;
1217         }
1218 }
1219
1220 void Server::AsyncRunStep()
1221 {
1222         DSTACK(__FUNCTION_NAME);
1223
1224         float dtime;
1225         {
1226                 JMutexAutoLock lock1(m_step_dtime_mutex);
1227                 dtime = m_step_dtime;
1228         }
1229
1230         {
1231                 ScopeProfiler sp(&g_profiler, "Server: selecting and sending "
1232                                 "blocks to clients");
1233                 // Send blocks to clients
1234                 SendBlocks(dtime);
1235         }
1236
1237         if(dtime < 0.001)
1238                 return;
1239
1240         //dstream<<"Server steps "<<dtime<<std::endl;
1241         //dstream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
1242
1243         {
1244                 JMutexAutoLock lock1(m_step_dtime_mutex);
1245                 m_step_dtime -= dtime;
1246         }
1247
1248         /*
1249                 Update uptime
1250         */
1251         {
1252                 m_uptime.set(m_uptime.get() + dtime);
1253         }
1254
1255         /*
1256                 Update m_time_of_day and overall game time
1257         */
1258         {
1259                 JMutexAutoLock envlock(m_env_mutex);
1260
1261                 m_time_counter += dtime;
1262                 f32 speed = g_settings.getFloat("time_speed") * 24000./(24.*3600);
1263                 u32 units = (u32)(m_time_counter*speed);
1264                 m_time_counter -= (f32)units / speed;
1265
1266                 m_env.setTimeOfDay((m_env.getTimeOfDay() + units) % 24000);
1267
1268                 //dstream<<"Server: m_time_of_day = "<<m_time_of_day.get()<<std::endl;
1269
1270                 /*
1271                         Send to clients at constant intervals
1272                 */
1273
1274                 m_time_of_day_send_timer -= dtime;
1275                 if(m_time_of_day_send_timer < 0.0)
1276                 {
1277                         m_time_of_day_send_timer = g_settings.getFloat("time_send_interval");
1278
1279                         //JMutexAutoLock envlock(m_env_mutex);
1280                         JMutexAutoLock conlock(m_con_mutex);
1281
1282                         for(core::map<u16, RemoteClient*>::Iterator
1283                                 i = m_clients.getIterator();
1284                                 i.atEnd() == false; i++)
1285                         {
1286                                 RemoteClient *client = i.getNode()->getValue();
1287                                 //Player *player = m_env.getPlayer(client->peer_id);
1288
1289                                 SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
1290                                                 m_env.getTimeOfDay());
1291                                 // Send as reliable
1292                                 m_con.Send(client->peer_id, 0, data, true);
1293                         }
1294                 }
1295         }
1296
1297         {
1298                 // Process connection's timeouts
1299                 JMutexAutoLock lock2(m_con_mutex);
1300                 ScopeProfiler sp(&g_profiler, "Server: connection timeout processing");
1301                 m_con.RunTimeouts(dtime);
1302         }
1303
1304         {
1305                 // This has to be called so that the client list gets synced
1306                 // with the peer list of the connection
1307                 ScopeProfiler sp(&g_profiler, "Server: peer change handling");
1308                 handlePeerChanges();
1309         }
1310
1311         {
1312                 JMutexAutoLock lock(m_env_mutex);
1313                 // Step environment
1314                 ScopeProfiler sp(&g_profiler, "Server: environment step");
1315                 m_env.step(dtime);
1316         }
1317
1318         const float map_timer_and_unload_dtime = 5.15;
1319         if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
1320         {
1321                 JMutexAutoLock lock(m_env_mutex);
1322                 // Run Map's timers and unload unused data
1323                 ScopeProfiler sp(&g_profiler, "Server: map timer and unload");
1324                 m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
1325                                 g_settings.getFloat("server_unload_unused_data_timeout"));
1326         }
1327
1328         /*
1329                 Do background stuff
1330         */
1331
1332         /*
1333                 Transform liquids
1334         */
1335         m_liquid_transform_timer += dtime;
1336         if(m_liquid_transform_timer >= 1.00)
1337         {
1338                 m_liquid_transform_timer -= 1.00;
1339
1340                 JMutexAutoLock lock(m_env_mutex);
1341
1342                 ScopeProfiler sp(&g_profiler, "Server: liquid transform");
1343
1344                 core::map<v3s16, MapBlock*> modified_blocks;
1345                 m_env.getMap().transformLiquids(modified_blocks);
1346 #if 0
1347                 /*
1348                         Update lighting
1349                 */
1350                 core::map<v3s16, MapBlock*> lighting_modified_blocks;
1351                 ServerMap &map = ((ServerMap&)m_env.getMap());
1352                 map.updateLighting(modified_blocks, lighting_modified_blocks);
1353
1354                 // Add blocks modified by lighting to modified_blocks
1355                 for(core::map<v3s16, MapBlock*>::Iterator
1356                                 i = lighting_modified_blocks.getIterator();
1357                                 i.atEnd() == false; i++)
1358                 {
1359                         MapBlock *block = i.getNode()->getValue();
1360                         modified_blocks.insert(block->getPos(), block);
1361                 }
1362 #endif
1363                 /*
1364                         Set the modified blocks unsent for all the clients
1365                 */
1366
1367                 JMutexAutoLock lock2(m_con_mutex);
1368
1369                 for(core::map<u16, RemoteClient*>::Iterator
1370                                 i = m_clients.getIterator();
1371                                 i.atEnd() == false; i++)
1372                 {
1373                         RemoteClient *client = i.getNode()->getValue();
1374
1375                         if(modified_blocks.size() > 0)
1376                         {
1377                                 // Remove block from sent history
1378                                 client->SetBlocksNotSent(modified_blocks);
1379                         }
1380                 }
1381         }
1382
1383         // Periodically print some info
1384         {
1385                 float &counter = m_print_info_timer;
1386                 counter += dtime;
1387                 if(counter >= 30.0)
1388                 {
1389                         counter = 0.0;
1390
1391                         JMutexAutoLock lock2(m_con_mutex);
1392
1393                         for(core::map<u16, RemoteClient*>::Iterator
1394                                 i = m_clients.getIterator();
1395                                 i.atEnd() == false; i++)
1396                         {
1397                                 //u16 peer_id = i.getNode()->getKey();
1398                                 RemoteClient *client = i.getNode()->getValue();
1399                                 Player *player = m_env.getPlayer(client->peer_id);
1400                                 if(player==NULL)
1401                                         continue;
1402                                 std::cout<<player->getName()<<"\t";
1403                                 client->PrintInfo(std::cout);
1404                         }
1405                 }
1406         }
1407
1408         //if(g_settings.getBool("enable_experimental"))
1409         {
1410
1411         /*
1412                 Check added and deleted active objects
1413         */
1414         {
1415                 //dstream<<"Server: Checking added and deleted active objects"<<std::endl;
1416                 JMutexAutoLock envlock(m_env_mutex);
1417                 JMutexAutoLock conlock(m_con_mutex);
1418
1419                 ScopeProfiler sp(&g_profiler, "Server: checking added and deleted objects");
1420
1421                 // Radius inside which objects are active
1422                 s16 radius = 32;
1423
1424                 for(core::map<u16, RemoteClient*>::Iterator
1425                         i = m_clients.getIterator();
1426                         i.atEnd() == false; i++)
1427                 {
1428                         RemoteClient *client = i.getNode()->getValue();
1429                         Player *player = m_env.getPlayer(client->peer_id);
1430                         if(player==NULL)
1431                         {
1432                                 // This can happen if the client timeouts somehow
1433                                 /*dstream<<"WARNING: "<<__FUNCTION_NAME<<": Client "
1434                                                 <<client->peer_id
1435                                                 <<" has no associated player"<<std::endl;*/
1436                                 continue;
1437                         }
1438                         v3s16 pos = floatToInt(player->getPosition(), BS);
1439
1440                         core::map<u16, bool> removed_objects;
1441                         core::map<u16, bool> added_objects;
1442                         m_env.getRemovedActiveObjects(pos, radius,
1443                                         client->m_known_objects, removed_objects);
1444                         m_env.getAddedActiveObjects(pos, radius,
1445                                         client->m_known_objects, added_objects);
1446
1447                         // Ignore if nothing happened
1448                         if(removed_objects.size() == 0 && added_objects.size() == 0)
1449                         {
1450                                 //dstream<<"INFO: active objects: none changed"<<std::endl;
1451                                 continue;
1452                         }
1453
1454                         std::string data_buffer;
1455
1456                         char buf[4];
1457
1458                         // Handle removed objects
1459                         writeU16((u8*)buf, removed_objects.size());
1460                         data_buffer.append(buf, 2);
1461                         for(core::map<u16, bool>::Iterator
1462                                         i = removed_objects.getIterator();
1463                                         i.atEnd()==false; i++)
1464                         {
1465                                 // Get object
1466                                 u16 id = i.getNode()->getKey();
1467                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1468
1469                                 // Add to data buffer for sending
1470                                 writeU16((u8*)buf, i.getNode()->getKey());
1471                                 data_buffer.append(buf, 2);
1472
1473                                 // Remove from known objects
1474                                 client->m_known_objects.remove(i.getNode()->getKey());
1475
1476                                 if(obj && obj->m_known_by_count > 0)
1477                                         obj->m_known_by_count--;
1478                         }
1479
1480                         // Handle added objects
1481                         writeU16((u8*)buf, added_objects.size());
1482                         data_buffer.append(buf, 2);
1483                         for(core::map<u16, bool>::Iterator
1484                                         i = added_objects.getIterator();
1485                                         i.atEnd()==false; i++)
1486                         {
1487                                 // Get object
1488                                 u16 id = i.getNode()->getKey();
1489                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1490
1491                                 // Get object type
1492                                 u8 type = ACTIVEOBJECT_TYPE_INVALID;
1493                                 if(obj == NULL)
1494                                         dstream<<"WARNING: "<<__FUNCTION_NAME
1495                                                         <<": NULL object"<<std::endl;
1496                                 else
1497                                         type = obj->getType();
1498
1499                                 // Add to data buffer for sending
1500                                 writeU16((u8*)buf, id);
1501                                 data_buffer.append(buf, 2);
1502                                 writeU8((u8*)buf, type);
1503                                 data_buffer.append(buf, 1);
1504
1505                                 if(obj)
1506                                         data_buffer.append(serializeLongString(
1507                                                         obj->getClientInitializationData()));
1508                                 else
1509                                         data_buffer.append(serializeLongString(""));
1510
1511                                 // Add to known objects
1512                                 client->m_known_objects.insert(i.getNode()->getKey(), false);
1513
1514                                 if(obj)
1515                                         obj->m_known_by_count++;
1516                         }
1517
1518                         // Send packet
1519                         SharedBuffer<u8> reply(2 + data_buffer.size());
1520                         writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD);
1521                         memcpy((char*)&reply[2], data_buffer.c_str(),
1522                                         data_buffer.size());
1523                         // Send as reliable
1524                         m_con.Send(client->peer_id, 0, reply, true);
1525
1526                         dstream<<"INFO: Server: Sent object remove/add: "
1527                                         <<removed_objects.size()<<" removed, "
1528                                         <<added_objects.size()<<" added, "
1529                                         <<"packet size is "<<reply.getSize()<<std::endl;
1530                 }
1531
1532 #if 0
1533                 /*
1534                         Collect a list of all the objects known by the clients
1535                         and report it back to the environment.
1536                 */
1537
1538                 core::map<u16, bool> all_known_objects;
1539
1540                 for(core::map<u16, RemoteClient*>::Iterator
1541                         i = m_clients.getIterator();
1542                         i.atEnd() == false; i++)
1543                 {
1544                         RemoteClient *client = i.getNode()->getValue();
1545                         // Go through all known objects of client
1546                         for(core::map<u16, bool>::Iterator
1547                                         i = client->m_known_objects.getIterator();
1548                                         i.atEnd()==false; i++)
1549                         {
1550                                 u16 id = i.getNode()->getKey();
1551                                 all_known_objects[id] = true;
1552                         }
1553                 }
1554
1555                 m_env.setKnownActiveObjects(whatever);
1556 #endif
1557
1558         }
1559
1560         /*
1561                 Send object messages
1562         */
1563         {
1564                 JMutexAutoLock envlock(m_env_mutex);
1565                 JMutexAutoLock conlock(m_con_mutex);
1566
1567                 ScopeProfiler sp(&g_profiler, "Server: sending object messages");
1568
1569                 // Key = object id
1570                 // Value = data sent by object
1571                 core::map<u16, core::list<ActiveObjectMessage>* > buffered_messages;
1572
1573                 // Get active object messages from environment
1574                 for(;;)
1575                 {
1576                         ActiveObjectMessage aom = m_env.getActiveObjectMessage();
1577                         if(aom.id == 0)
1578                                 break;
1579
1580                         core::list<ActiveObjectMessage>* message_list = NULL;
1581                         core::map<u16, core::list<ActiveObjectMessage>* >::Node *n;
1582                         n = buffered_messages.find(aom.id);
1583                         if(n == NULL)
1584                         {
1585                                 message_list = new core::list<ActiveObjectMessage>;
1586                                 buffered_messages.insert(aom.id, message_list);
1587                         }
1588                         else
1589                         {
1590                                 message_list = n->getValue();
1591                         }
1592                         message_list->push_back(aom);
1593                 }
1594
1595                 // Route data to every client
1596                 for(core::map<u16, RemoteClient*>::Iterator
1597                         i = m_clients.getIterator();
1598                         i.atEnd()==false; i++)
1599                 {
1600                         RemoteClient *client = i.getNode()->getValue();
1601                         std::string reliable_data;
1602                         std::string unreliable_data;
1603                         // Go through all objects in message buffer
1604                         for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1605                                         j = buffered_messages.getIterator();
1606                                         j.atEnd()==false; j++)
1607                         {
1608                                 // If object is not known by client, skip it
1609                                 u16 id = j.getNode()->getKey();
1610                                 if(client->m_known_objects.find(id) == NULL)
1611                                         continue;
1612                                 // Get message list of object
1613                                 core::list<ActiveObjectMessage>* list = j.getNode()->getValue();
1614                                 // Go through every message
1615                                 for(core::list<ActiveObjectMessage>::Iterator
1616                                                 k = list->begin(); k != list->end(); k++)
1617                                 {
1618                                         // Compose the full new data with header
1619                                         ActiveObjectMessage aom = *k;
1620                                         std::string new_data;
1621                                         // Add object id
1622                                         char buf[2];
1623                                         writeU16((u8*)&buf[0], aom.id);
1624                                         new_data.append(buf, 2);
1625                                         // Add data
1626                                         new_data += serializeString(aom.datastring);
1627                                         // Add data to buffer
1628                                         if(aom.reliable)
1629                                                 reliable_data += new_data;
1630                                         else
1631                                                 unreliable_data += new_data;
1632                                 }
1633                         }
1634                         /*
1635                                 reliable_data and unreliable_data are now ready.
1636                                 Send them.
1637                         */
1638                         if(reliable_data.size() > 0)
1639                         {
1640                                 SharedBuffer<u8> reply(2 + reliable_data.size());
1641                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1642                                 memcpy((char*)&reply[2], reliable_data.c_str(),
1643                                                 reliable_data.size());
1644                                 // Send as reliable
1645                                 m_con.Send(client->peer_id, 0, reply, true);
1646                         }
1647                         if(unreliable_data.size() > 0)
1648                         {
1649                                 SharedBuffer<u8> reply(2 + unreliable_data.size());
1650                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1651                                 memcpy((char*)&reply[2], unreliable_data.c_str(),
1652                                                 unreliable_data.size());
1653                                 // Send as unreliable
1654                                 m_con.Send(client->peer_id, 0, reply, false);
1655                         }
1656
1657                         /*if(reliable_data.size() > 0 || unreliable_data.size() > 0)
1658                         {
1659                                 dstream<<"INFO: Server: Size of object message data: "
1660                                                 <<"reliable: "<<reliable_data.size()
1661                                                 <<", unreliable: "<<unreliable_data.size()
1662                                                 <<std::endl;
1663                         }*/
1664                 }
1665
1666                 // Clear buffered_messages
1667                 for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1668                                 i = buffered_messages.getIterator();
1669                                 i.atEnd()==false; i++)
1670                 {
1671                         delete i.getNode()->getValue();
1672                 }
1673         }
1674
1675         } // enable_experimental
1676
1677         /*
1678                 Send queued-for-sending map edit events.
1679         */
1680         {
1681                 // Don't send too many at a time
1682                 //u32 count = 0;
1683
1684                 // Single change sending is disabled if queue size is not small
1685                 bool disable_single_change_sending = false;
1686                 if(m_unsent_map_edit_queue.size() >= 4)
1687                         disable_single_change_sending = true;
1688
1689                 bool got_any_events = false;
1690
1691                 // We'll log the amount of each
1692                 Profiler prof;
1693
1694                 while(m_unsent_map_edit_queue.size() != 0)
1695                 {
1696                         got_any_events = true;
1697
1698                         MapEditEvent* event = m_unsent_map_edit_queue.pop_front();
1699
1700                         // Players far away from the change are stored here.
1701                         // Instead of sending the changes, MapBlocks are set not sent
1702                         // for them.
1703                         core::list<u16> far_players;
1704
1705                         if(event->type == MEET_ADDNODE)
1706                         {
1707                                 //dstream<<"Server: MEET_ADDNODE"<<std::endl;
1708                                 prof.add("MEET_ADDNODE", 1);
1709                                 if(disable_single_change_sending)
1710                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1711                                                         &far_players, 5);
1712                                 else
1713                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1714                                                         &far_players, 30);
1715                         }
1716                         else if(event->type == MEET_REMOVENODE)
1717                         {
1718                                 //dstream<<"Server: MEET_REMOVENODE"<<std::endl;
1719                                 prof.add("MEET_REMOVENODE", 1);
1720                                 if(disable_single_change_sending)
1721                                         sendRemoveNode(event->p, event->already_known_by_peer,
1722                                                         &far_players, 5);
1723                                 else
1724                                         sendRemoveNode(event->p, event->already_known_by_peer,
1725                                                         &far_players, 30);
1726                         }
1727                         else if(event->type == MEET_BLOCK_NODE_METADATA_CHANGED)
1728                         {
1729                                 dstream<<"Server: MEET_BLOCK_NODE_METADATA_CHANGED"<<std::endl;
1730                                 prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
1731                                 setBlockNotSent(event->p);
1732                         }
1733                         else if(event->type == MEET_OTHER)
1734                         {
1735                                 prof.add("MEET_OTHER", 1);
1736                                 dstream<<"WARNING: Server: MEET_OTHER not implemented"
1737                                                 <<std::endl;
1738                         }
1739                         else
1740                         {
1741                                 prof.add("unknown", 1);
1742                                 dstream<<"WARNING: Server: Unknown MapEditEvent "
1743                                                 <<((u32)event->type)<<std::endl;
1744                         }
1745
1746                         /*
1747                                 Set blocks not sent to far players
1748                         */
1749                         if(far_players.size() > 0)
1750                         {
1751                                 // Convert list format to that wanted by SetBlocksNotSent
1752                                 core::map<v3s16, MapBlock*> modified_blocks2;
1753                                 for(core::map<v3s16, bool>::Iterator
1754                                                 i = event->modified_blocks.getIterator();
1755                                                 i.atEnd()==false; i++)
1756                                 {
1757                                         v3s16 p = i.getNode()->getKey();
1758                                         modified_blocks2.insert(p,
1759                                                         m_env.getMap().getBlockNoCreateNoEx(p));
1760                                 }
1761                                 // Set blocks not sent
1762                                 for(core::list<u16>::Iterator
1763                                                 i = far_players.begin();
1764                                                 i != far_players.end(); i++)
1765                                 {
1766                                         u16 peer_id = *i;
1767                                         RemoteClient *client = getClient(peer_id);
1768                                         if(client==NULL)
1769                                                 continue;
1770                                         client->SetBlocksNotSent(modified_blocks2);
1771                                 }
1772                         }
1773
1774                         delete event;
1775
1776                         /*// Don't send too many at a time
1777                         count++;
1778                         if(count >= 1 && m_unsent_map_edit_queue.size() < 100)
1779                                 break;*/
1780                 }
1781
1782                 if(got_any_events)
1783                 {
1784                         dstream<<"Server: MapEditEvents:"<<std::endl;
1785                         prof.print(dstream);
1786                 }
1787
1788         }
1789
1790         /*
1791                 Send object positions
1792                 TODO: Get rid of MapBlockObjects
1793         */
1794         {
1795                 float &counter = m_objectdata_timer;
1796                 counter += dtime;
1797                 if(counter >= g_settings.getFloat("objectdata_interval"))
1798                 {
1799                         JMutexAutoLock lock1(m_env_mutex);
1800                         JMutexAutoLock lock2(m_con_mutex);
1801
1802                         ScopeProfiler sp(&g_profiler, "Server: sending mbo positions");
1803
1804                         SendObjectData(counter);
1805
1806                         counter = 0.0;
1807                 }
1808         }
1809
1810         /*
1811                 Trigger emergethread (it somehow gets to a non-triggered but
1812                 bysy state sometimes)
1813         */
1814         {
1815                 float &counter = m_emergethread_trigger_timer;
1816                 counter += dtime;
1817                 if(counter >= 2.0)
1818                 {
1819                         counter = 0.0;
1820
1821                         m_emergethread.trigger();
1822                 }
1823         }
1824
1825         // Save map, players and auth stuff
1826         {
1827                 float &counter = m_savemap_timer;
1828                 counter += dtime;
1829                 if(counter >= g_settings.getFloat("server_map_save_interval"))
1830                 {
1831                         counter = 0.0;
1832
1833                         ScopeProfiler sp(&g_profiler, "Server: saving stuff");
1834
1835                         // Auth stuff
1836                         if(m_authmanager.isModified())
1837                                 m_authmanager.save();
1838
1839                         // Map
1840                         JMutexAutoLock lock(m_env_mutex);
1841
1842                         /*// Unload unused data (delete from memory)
1843                         m_env.getMap().unloadUnusedData(
1844                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1845                                         */
1846                         /*u32 deleted_count = m_env.getMap().unloadUnusedData(
1847                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1848                                         */
1849
1850                         // Save only changed parts
1851                         m_env.getMap().save(true);
1852
1853                         /*if(deleted_count > 0)
1854                         {
1855                                 dout_server<<"Server: Unloaded "<<deleted_count
1856                                                 <<" blocks from memory"<<std::endl;
1857                         }*/
1858
1859                         // Save players
1860                         m_env.serializePlayers(m_mapsavedir);
1861
1862                         // Save environment metadata
1863                         m_env.saveMeta(m_mapsavedir);
1864                 }
1865         }
1866 }
1867
1868 void Server::Receive()
1869 {
1870         DSTACK(__FUNCTION_NAME);
1871         u32 data_maxsize = 10000;
1872         Buffer<u8> data(data_maxsize);
1873         u16 peer_id;
1874         u32 datasize;
1875         try{
1876                 {
1877                         JMutexAutoLock conlock(m_con_mutex);
1878                         datasize = m_con.Receive(peer_id, *data, data_maxsize);
1879                 }
1880
1881                 // This has to be called so that the client list gets synced
1882                 // with the peer list of the connection
1883                 handlePeerChanges();
1884
1885                 ProcessData(*data, datasize, peer_id);
1886         }
1887         catch(con::InvalidIncomingDataException &e)
1888         {
1889                 derr_server<<"Server::Receive(): "
1890                                 "InvalidIncomingDataException: what()="
1891                                 <<e.what()<<std::endl;
1892         }
1893         catch(con::PeerNotFoundException &e)
1894         {
1895                 //NOTE: This is not needed anymore
1896
1897                 // The peer has been disconnected.
1898                 // Find the associated player and remove it.
1899
1900                 /*JMutexAutoLock envlock(m_env_mutex);
1901
1902                 dout_server<<"ServerThread: peer_id="<<peer_id
1903                                 <<" has apparently closed connection. "
1904                                 <<"Removing player."<<std::endl;
1905
1906                 m_env.removePlayer(peer_id);*/
1907         }
1908 }
1909
1910 void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
1911 {
1912         DSTACK(__FUNCTION_NAME);
1913         // Environment is locked first.
1914         JMutexAutoLock envlock(m_env_mutex);
1915         JMutexAutoLock conlock(m_con_mutex);
1916
1917         con::Peer *peer;
1918         try{
1919                 peer = m_con.GetPeer(peer_id);
1920         }
1921         catch(con::PeerNotFoundException &e)
1922         {
1923                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: peer "
1924                                 <<peer_id<<" not found"<<std::endl;
1925                 return;
1926         }
1927
1928         u8 peer_ser_ver = getClient(peer->id)->serialization_version;
1929
1930         try
1931         {
1932
1933         if(datasize < 2)
1934                 return;
1935
1936         ToServerCommand command = (ToServerCommand)readU16(&data[0]);
1937
1938         if(command == TOSERVER_INIT)
1939         {
1940                 // [0] u16 TOSERVER_INIT
1941                 // [2] u8 SER_FMT_VER_HIGHEST
1942                 // [3] u8[20] player_name
1943                 // [23] u8[28] password <--- can be sent without this, from old versions
1944
1945                 if(datasize < 2+1+PLAYERNAME_SIZE)
1946                         return;
1947
1948                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT from "
1949                                 <<peer->id<<std::endl;
1950
1951                 // First byte after command is maximum supported
1952                 // serialization version
1953                 u8 client_max = data[2];
1954                 u8 our_max = SER_FMT_VER_HIGHEST;
1955                 // Use the highest version supported by both
1956                 u8 deployed = core::min_(client_max, our_max);
1957                 // If it's lower than the lowest supported, give up.
1958                 if(deployed < SER_FMT_VER_LOWEST)
1959                         deployed = SER_FMT_VER_INVALID;
1960
1961                 //peer->serialization_version = deployed;
1962                 getClient(peer->id)->pending_serialization_version = deployed;
1963
1964                 if(deployed == SER_FMT_VER_INVALID)
1965                 {
1966                         derr_server<<DTIME<<"Server: Cannot negotiate "
1967                                         "serialization version with peer "
1968                                         <<peer_id<<std::endl;
1969                         SendAccessDenied(m_con, peer_id,
1970                                         L"Your client is too old (map format)");
1971                         return;
1972                 }
1973
1974                 /*
1975                         Check network protocol version
1976                 */
1977                 u16 net_proto_version = 0;
1978                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
1979                 {
1980                         net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
1981                 }
1982                 if(net_proto_version == 0)
1983                 {
1984                         /*SendAccessDenied(m_con, peer_id,
1985                                         L"Your client is too old (network protocol)");
1986                         return;*/
1987                         SendChatMessage(peer_id, L"# Server: NOTE: YOUR CLIENT IS OLD AND DOES NOT WORK PROPERLY WITH THIS SERVER");
1988                 }
1989
1990                 /*
1991                         Set up player
1992                 */
1993
1994                 // Get player name
1995                 char playername[PLAYERNAME_SIZE];
1996                 for(u32 i=0; i<PLAYERNAME_SIZE-1; i++)
1997                 {
1998                         playername[i] = data[3+i];
1999                 }
2000                 playername[PLAYERNAME_SIZE-1] = 0;
2001
2002                 if(playername[0]=='\0')
2003                 {
2004                         derr_server<<DTIME<<"Server: Player has empty name"<<std::endl;
2005                         SendAccessDenied(m_con, peer_id,
2006                                         L"Empty name");
2007                         return;
2008                 }
2009
2010                 if(string_allowed(playername, PLAYERNAME_ALLOWED_CHARS)==false)
2011                 {
2012                         derr_server<<DTIME<<"Server: Player has invalid name"<<std::endl;
2013                         SendAccessDenied(m_con, peer_id,
2014                                         L"Name contains unallowed characters");
2015                         return;
2016                 }
2017
2018                 // Get password
2019                 char password[PASSWORD_SIZE];
2020                 if(datasize >= 2+1+PLAYERNAME_SIZE)
2021                 {
2022                         // old version - assume blank password
2023                         password[0] = 0;
2024                 }
2025                 else
2026                 {
2027                                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2028                                 {
2029                                         password[i] = data[23+i];
2030                                 }
2031                                 password[PASSWORD_SIZE-1] = 0;
2032                 }
2033
2034                 std::string checkpwd;
2035                 if(m_authmanager.exists(playername))
2036                 {
2037                         checkpwd = m_authmanager.getPassword(playername);
2038                 }
2039                 else
2040                 {
2041                         checkpwd = g_settings.get("default_password");
2042                 }
2043
2044                 if(password != checkpwd && checkpwd != "")
2045                 {
2046                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2047                                         <<": supplied invalid password for "
2048                                         <<playername<<std::endl;
2049                         SendAccessDenied(m_con, peer_id, L"Invalid password");
2050                         return;
2051                 }
2052
2053                 // Add player to auth manager
2054                 if(m_authmanager.exists(playername) == false)
2055                 {
2056                         derr_server<<DTIME<<"Server: adding player "<<playername
2057                                         <<" to auth manager"<<std::endl;
2058                         m_authmanager.add(playername);
2059                         m_authmanager.setPassword(playername, checkpwd);
2060                         m_authmanager.setPrivs(playername,
2061                                         stringToPrivs(g_settings.get("default_privs")));
2062                         m_authmanager.save();
2063                 }
2064
2065                 // Get player
2066                 Player *player = emergePlayer(playername, password, peer_id);
2067
2068
2069                 /*{
2070                         // DEBUG: Test serialization
2071                         std::ostringstream test_os;
2072                         player->serialize(test_os);
2073                         dstream<<"Player serialization test: \""<<test_os.str()
2074                                         <<"\""<<std::endl;
2075                         std::istringstream test_is(test_os.str());
2076                         player->deSerialize(test_is);
2077                 }*/
2078
2079                 // If failed, cancel
2080                 if(player == NULL)
2081                 {
2082                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2083                                         <<": failed to emerge player"<<std::endl;
2084                         return;
2085                 }
2086
2087                 /*
2088                 // If a client is already connected to the player, cancel
2089                 if(player->peer_id != 0)
2090                 {
2091                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2092                                         <<" tried to connect to "
2093                                         "an already connected player (peer_id="
2094                                         <<player->peer_id<<")"<<std::endl;
2095                         return;
2096                 }
2097                 // Set client of player
2098                 player->peer_id = peer_id;
2099                 */
2100
2101                 // Check if player doesn't exist
2102                 if(player == NULL)
2103                         throw con::InvalidIncomingDataException
2104                                 ("Server::ProcessData(): INIT: Player doesn't exist");
2105
2106                 /*// update name if it was supplied
2107                 if(datasize >= 20+3)
2108                 {
2109                         data[20+3-1] = 0;
2110                         player->updateName((const char*)&data[3]);
2111                 }*/
2112
2113                 /*
2114                         Answer with a TOCLIENT_INIT
2115                 */
2116                 {
2117                         SharedBuffer<u8> reply(2+1+6+8);
2118                         writeU16(&reply[0], TOCLIENT_INIT);
2119                         writeU8(&reply[2], deployed);
2120                         writeV3S16(&reply[2+1], floatToInt(player->getPosition()+v3f(0,BS/2,0), BS));
2121                         writeU64(&reply[2+1+6], m_env.getServerMap().getSeed());
2122
2123                         // Send as reliable
2124                         m_con.Send(peer_id, 0, reply, true);
2125                 }
2126
2127                 /*
2128                         Send complete position information
2129                 */
2130                 SendMovePlayer(player);
2131
2132                 return;
2133         }
2134
2135         if(command == TOSERVER_INIT2)
2136         {
2137                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT2 from "
2138                                 <<peer->id<<std::endl;
2139
2140
2141                 getClient(peer->id)->serialization_version
2142                                 = getClient(peer->id)->pending_serialization_version;
2143
2144                 /*
2145                         Send some initialization data
2146                 */
2147
2148                 // Send player info to all players
2149                 SendPlayerInfos();
2150
2151                 // Send inventory to player
2152                 UpdateCrafting(peer->id);
2153                 SendInventory(peer->id);
2154
2155                 // Send HP
2156                 {
2157                         Player *player = m_env.getPlayer(peer_id);
2158                         SendPlayerHP(player);
2159                 }
2160
2161                 // Send time of day
2162                 {
2163                         SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
2164                                         m_env.getTimeOfDay());
2165                         m_con.Send(peer->id, 0, data, true);
2166                 }
2167
2168                 // Send information about server to player in chat
2169                 SendChatMessage(peer_id, getStatusString());
2170
2171                 // Send information about joining in chat
2172                 {
2173                         std::wstring name = L"unknown";
2174                         Player *player = m_env.getPlayer(peer_id);
2175                         if(player != NULL)
2176                                 name = narrow_to_wide(player->getName());
2177
2178                         std::wstring message;
2179                         message += L"*** ";
2180                         message += name;
2181                         message += L" joined game";
2182                         BroadcastChatMessage(message);
2183                 }
2184
2185                 return;
2186         }
2187
2188         if(peer_ser_ver == SER_FMT_VER_INVALID)
2189         {
2190                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: Peer"
2191                                 " serialization format invalid or not initialized."
2192                                 " Skipping incoming command="<<command<<std::endl;
2193                 return;
2194         }
2195
2196         Player *player = m_env.getPlayer(peer_id);
2197
2198         if(player == NULL){
2199                 derr_server<<"Server::ProcessData(): Cancelling: "
2200                                 "No player for peer_id="<<peer_id
2201                                 <<std::endl;
2202                 return;
2203         }
2204         if(command == TOSERVER_PLAYERPOS)
2205         {
2206                 if(datasize < 2+12+12+4+4)
2207                         return;
2208
2209                 u32 start = 0;
2210                 v3s32 ps = readV3S32(&data[start+2]);
2211                 v3s32 ss = readV3S32(&data[start+2+12]);
2212                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
2213                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
2214                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
2215                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
2216                 pitch = wrapDegrees(pitch);
2217                 yaw = wrapDegrees(yaw);
2218                 player->setPosition(position);
2219                 player->setSpeed(speed);
2220                 player->setPitch(pitch);
2221                 player->setYaw(yaw);
2222
2223                 /*dout_server<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
2224                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
2225                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
2226         }
2227         else if(command == TOSERVER_GOTBLOCKS)
2228         {
2229                 if(datasize < 2+1)
2230                         return;
2231
2232                 /*
2233                         [0] u16 command
2234                         [2] u8 count
2235                         [3] v3s16 pos_0
2236                         [3+6] v3s16 pos_1
2237                         ...
2238                 */
2239
2240                 u16 count = data[2];
2241                 for(u16 i=0; i<count; i++)
2242                 {
2243                         if((s16)datasize < 2+1+(i+1)*6)
2244                                 throw con::InvalidIncomingDataException
2245                                         ("GOTBLOCKS length is too short");
2246                         v3s16 p = readV3S16(&data[2+1+i*6]);
2247                         /*dstream<<"Server: GOTBLOCKS ("
2248                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2249                         RemoteClient *client = getClient(peer_id);
2250                         client->GotBlock(p);
2251                 }
2252         }
2253         else if(command == TOSERVER_DELETEDBLOCKS)
2254         {
2255                 if(datasize < 2+1)
2256                         return;
2257
2258                 /*
2259                         [0] u16 command
2260                         [2] u8 count
2261                         [3] v3s16 pos_0
2262                         [3+6] v3s16 pos_1
2263                         ...
2264                 */
2265
2266                 u16 count = data[2];
2267                 for(u16 i=0; i<count; i++)
2268                 {
2269                         if((s16)datasize < 2+1+(i+1)*6)
2270                                 throw con::InvalidIncomingDataException
2271                                         ("DELETEDBLOCKS length is too short");
2272                         v3s16 p = readV3S16(&data[2+1+i*6]);
2273                         /*dstream<<"Server: DELETEDBLOCKS ("
2274                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2275                         RemoteClient *client = getClient(peer_id);
2276                         client->SetBlockNotSent(p);
2277                 }
2278         }
2279         else if(command == TOSERVER_CLICK_OBJECT)
2280         {
2281                 if(datasize < 13)
2282                         return;
2283
2284                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2285                         return;
2286
2287                 /*
2288                         [0] u16 command
2289                         [2] u8 button (0=left, 1=right)
2290                         [3] v3s16 block
2291                         [9] s16 id
2292                         [11] u16 item
2293                 */
2294                 u8 button = readU8(&data[2]);
2295                 v3s16 p;
2296                 p.X = readS16(&data[3]);
2297                 p.Y = readS16(&data[5]);
2298                 p.Z = readS16(&data[7]);
2299                 s16 id = readS16(&data[9]);
2300                 //u16 item_i = readU16(&data[11]);
2301
2302                 MapBlock *block = NULL;
2303                 try
2304                 {
2305                         block = m_env.getMap().getBlockNoCreate(p);
2306                 }
2307                 catch(InvalidPositionException &e)
2308                 {
2309                         derr_server<<"CLICK_OBJECT block not found"<<std::endl;
2310                         return;
2311                 }
2312
2313                 MapBlockObject *obj = block->getObject(id);
2314
2315                 if(obj == NULL)
2316                 {
2317                         derr_server<<"CLICK_OBJECT object not found"<<std::endl;
2318                         return;
2319                 }
2320
2321                 //TODO: Check that object is reasonably close
2322
2323                 // Left click
2324                 if(button == 0)
2325                 {
2326                         InventoryList *ilist = player->inventory.getList("main");
2327                         if(g_settings.getBool("creative_mode") == false && ilist != NULL)
2328                         {
2329
2330                                 // Skip if inventory has no free space
2331                                 if(ilist->getUsedSlots() == ilist->getSize())
2332                                 {
2333                                         dout_server<<"Player inventory has no free space"<<std::endl;
2334                                         return;
2335                                 }
2336
2337                                 /*
2338                                         Create the inventory item
2339                                 */
2340                                 InventoryItem *item = NULL;
2341                                 // If it is an item-object, take the item from it
2342                                 if(obj->getTypeId() == MAPBLOCKOBJECT_TYPE_ITEM)
2343                                 {
2344                                         item = ((ItemObject*)obj)->createInventoryItem();
2345                                 }
2346                                 // Else create an item of the object
2347                                 else
2348                                 {
2349                                         item = new MapBlockObjectItem
2350                                                         (obj->getInventoryString());
2351                                 }
2352
2353                                 // Add to inventory and send inventory
2354                                 ilist->addItem(item);
2355                                 UpdateCrafting(player->peer_id);
2356                                 SendInventory(player->peer_id);
2357                         }
2358
2359                         // Remove from block
2360                         block->removeObject(id);
2361                 }
2362         }
2363         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
2364         {
2365                 if(datasize < 7)
2366                         return;
2367
2368                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2369                         return;
2370
2371                 /*
2372                         length: 7
2373                         [0] u16 command
2374                         [2] u8 button (0=left, 1=right)
2375                         [3] u16 id
2376                         [5] u16 item
2377                 */
2378                 u8 button = readU8(&data[2]);
2379                 u16 id = readS16(&data[3]);
2380                 u16 item_i = readU16(&data[11]);
2381
2382                 ServerActiveObject *obj = m_env.getActiveObject(id);
2383
2384                 if(obj == NULL)
2385                 {
2386                         derr_server<<"Server: CLICK_ACTIVEOBJECT: object not found"
2387                                         <<std::endl;
2388                         return;
2389                 }
2390
2391                 // Skip if object has been removed
2392                 if(obj->m_removed)
2393                         return;
2394
2395                 //TODO: Check that object is reasonably close
2396
2397                 // Left click, pick object up (usually)
2398                 if(button == 0)
2399                 {
2400                         /*
2401                                 Try creating inventory item
2402                         */
2403                         InventoryItem *item = obj->createPickedUpItem();
2404
2405                         if(item)
2406                         {
2407                                 InventoryList *ilist = player->inventory.getList("main");
2408                                 if(ilist != NULL)
2409                                 {
2410                                         if(g_settings.getBool("creative_mode") == false)
2411                                         {
2412                                                 // Skip if inventory has no free space
2413                                                 if(ilist->getUsedSlots() == ilist->getSize())
2414                                                 {
2415                                                         dout_server<<"Player inventory has no free space"<<std::endl;
2416                                                         return;
2417                                                 }
2418
2419                                                 // Add to inventory and send inventory
2420                                                 ilist->addItem(item);
2421                                                 UpdateCrafting(player->peer_id);
2422                                                 SendInventory(player->peer_id);
2423                                         }
2424
2425                                         // Remove object from environment
2426                                         obj->m_removed = true;
2427                                 }
2428                         }
2429                         else
2430                         {
2431                                 /*
2432                                         Item cannot be picked up. Punch it instead.
2433                                 */
2434
2435                                 ToolItem *titem = NULL;
2436                                 std::string toolname = "";
2437
2438                                 InventoryList *mlist = player->inventory.getList("main");
2439                                 if(mlist != NULL)
2440                                 {
2441                                         InventoryItem *item = mlist->getItem(item_i);
2442                                         if(item && (std::string)item->getName() == "ToolItem")
2443                                         {
2444                                                 titem = (ToolItem*)item;
2445                                                 toolname = titem->getToolName();
2446                                         }
2447                                 }
2448
2449                                 v3f playerpos = player->getPosition();
2450                                 v3f objpos = obj->getBasePosition();
2451                                 v3f dir = (objpos - playerpos).normalize();
2452
2453                                 u16 wear = obj->punch(toolname, dir);
2454
2455                                 if(titem)
2456                                 {
2457                                         bool weared_out = titem->addWear(wear);
2458                                         if(weared_out)
2459                                                 mlist->deleteItem(item_i);
2460                                         SendInventory(player->peer_id);
2461                                 }
2462                         }
2463                 }
2464                 // Right click, do something with object
2465                 if(button == 1)
2466                 {
2467                         // Track hp changes super-crappily
2468                         u16 oldhp = player->hp;
2469
2470                         // Do stuff
2471                         obj->rightClick(player);
2472
2473                         // Send back stuff
2474                         if(player->hp != oldhp)
2475                         {
2476                                 SendPlayerHP(player);
2477                         }
2478                 }
2479         }
2480         else if(command == TOSERVER_GROUND_ACTION)
2481         {
2482                 if(datasize < 17)
2483                         return;
2484                 /*
2485                         length: 17
2486                         [0] u16 command
2487                         [2] u8 action
2488                         [3] v3s16 nodepos_undersurface
2489                         [9] v3s16 nodepos_abovesurface
2490                         [15] u16 item
2491                         actions:
2492                         0: start digging
2493                         1: place block
2494                         2: stop digging (all parameters ignored)
2495                         3: digging completed
2496                 */
2497                 u8 action = readU8(&data[2]);
2498                 v3s16 p_under;
2499                 p_under.X = readS16(&data[3]);
2500                 p_under.Y = readS16(&data[5]);
2501                 p_under.Z = readS16(&data[7]);
2502                 v3s16 p_over;
2503                 p_over.X = readS16(&data[9]);
2504                 p_over.Y = readS16(&data[11]);
2505                 p_over.Z = readS16(&data[13]);
2506                 u16 item_i = readU16(&data[15]);
2507
2508                 //TODO: Check that target is reasonably close
2509
2510                 /*
2511                         0: start digging
2512                 */
2513                 if(action == 0)
2514                 {
2515                         /*
2516                                 NOTE: This can be used in the future to check if
2517                                 somebody is cheating, by checking the timing.
2518                         */
2519                 } // action == 0
2520
2521                 /*
2522                         2: stop digging
2523                 */
2524                 else if(action == 2)
2525                 {
2526 #if 0
2527                         RemoteClient *client = getClient(peer->id);
2528                         JMutexAutoLock digmutex(client->m_dig_mutex);
2529                         client->m_dig_tool_item = -1;
2530 #endif
2531                 }
2532
2533                 /*
2534                         3: Digging completed
2535                 */
2536                 else if(action == 3)
2537                 {
2538                         // Mandatory parameter; actually used for nothing
2539                         core::map<v3s16, MapBlock*> modified_blocks;
2540
2541                         content_t material = CONTENT_IGNORE;
2542                         u8 mineral = MINERAL_NONE;
2543
2544                         bool cannot_remove_node = false;
2545
2546                         try
2547                         {
2548                                 MapNode n = m_env.getMap().getNode(p_under);
2549                                 // Get mineral
2550                                 mineral = n.getMineral();
2551                                 // Get material at position
2552                                 material = n.getContent();
2553                                 // If not yet cancelled
2554                                 if(cannot_remove_node == false)
2555                                 {
2556                                         // If it's not diggable, do nothing
2557                                         if(content_diggable(material) == false)
2558                                         {
2559                                                 derr_server<<"Server: Not finishing digging: "
2560                                                                 <<"Node not diggable"
2561                                                                 <<std::endl;
2562                                                 cannot_remove_node = true;
2563                                         }
2564                                 }
2565                                 // If not yet cancelled
2566                                 if(cannot_remove_node == false)
2567                                 {
2568                                         // Get node metadata
2569                                         NodeMetadata *meta = m_env.getMap().getNodeMetadata(p_under);
2570                                         if(meta && meta->nodeRemovalDisabled() == true)
2571                                         {
2572                                                 derr_server<<"Server: Not finishing digging: "
2573                                                                 <<"Node metadata disables removal"
2574                                                                 <<std::endl;
2575                                                 cannot_remove_node = true;
2576                                         }
2577                                 }
2578                         }
2579                         catch(InvalidPositionException &e)
2580                         {
2581                                 derr_server<<"Server: Not finishing digging: Node not found."
2582                                                 <<" Adding block to emerge queue."
2583                                                 <<std::endl;
2584                                 m_emerge_queue.addBlock(peer_id,
2585                                                 getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2586                                 cannot_remove_node = true;
2587                         }
2588
2589                         // Make sure the player is allowed to do it
2590                         if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2591                         {
2592                                 dstream<<"Player "<<player->getName()<<" cannot remove node"
2593                                                 <<" because privileges are "<<getPlayerPrivs(player)
2594                                                 <<std::endl;
2595                                 cannot_remove_node = true;
2596                         }
2597
2598                         /*
2599                                 If node can't be removed, set block to be re-sent to
2600                                 client and quit.
2601                         */
2602                         if(cannot_remove_node)
2603                         {
2604                                 derr_server<<"Server: Not finishing digging."<<std::endl;
2605
2606                                 // Client probably has wrong data.
2607                                 // Set block not sent, so that client will get
2608                                 // a valid one.
2609                                 dstream<<"Client "<<peer_id<<" tried to dig "
2610                                                 <<"node; but node cannot be removed."
2611                                                 <<" setting MapBlock not sent."<<std::endl;
2612                                 RemoteClient *client = getClient(peer_id);
2613                                 v3s16 blockpos = getNodeBlockPos(p_under);
2614                                 client->SetBlockNotSent(blockpos);
2615
2616                                 return;
2617                         }
2618
2619                         /*
2620                                 Send the removal to all close-by players.
2621                                 - If other player is close, send REMOVENODE
2622                                 - Otherwise set blocks not sent
2623                         */
2624                         core::list<u16> far_players;
2625                         sendRemoveNode(p_under, peer_id, &far_players, 30);
2626
2627                         /*
2628                                 Update and send inventory
2629                         */
2630
2631                         if(g_settings.getBool("creative_mode") == false)
2632                         {
2633                                 /*
2634                                         Wear out tool
2635                                 */
2636                                 InventoryList *mlist = player->inventory.getList("main");
2637                                 if(mlist != NULL)
2638                                 {
2639                                         InventoryItem *item = mlist->getItem(item_i);
2640                                         if(item && (std::string)item->getName() == "ToolItem")
2641                                         {
2642                                                 ToolItem *titem = (ToolItem*)item;
2643                                                 std::string toolname = titem->getToolName();
2644
2645                                                 // Get digging properties for material and tool
2646                                                 DiggingProperties prop =
2647                                                                 getDiggingProperties(material, toolname);
2648
2649                                                 if(prop.diggable == false)
2650                                                 {
2651                                                         derr_server<<"Server: WARNING: Player digged"
2652                                                                         <<" with impossible material + tool"
2653                                                                         <<" combination"<<std::endl;
2654                                                 }
2655
2656                                                 bool weared_out = titem->addWear(prop.wear);
2657
2658                                                 if(weared_out)
2659                                                 {
2660                                                         mlist->deleteItem(item_i);
2661                                                 }
2662                                         }
2663                                 }
2664
2665                                 /*
2666                                         Add dug item to inventory
2667                                 */
2668
2669                                 InventoryItem *item = NULL;
2670
2671                                 if(mineral != MINERAL_NONE)
2672                                         item = getDiggedMineralItem(mineral);
2673
2674                                 // If not mineral
2675                                 if(item == NULL)
2676                                 {
2677                                         std::string &dug_s = content_features(material).dug_item;
2678                                         if(dug_s != "")
2679                                         {
2680                                                 std::istringstream is(dug_s, std::ios::binary);
2681                                                 item = InventoryItem::deSerialize(is);
2682                                         }
2683                                 }
2684
2685                                 if(item != NULL)
2686                                 {
2687                                         // Add a item to inventory
2688                                         player->inventory.addItem("main", item);
2689
2690                                         // Send inventory
2691                                         UpdateCrafting(player->peer_id);
2692                                         SendInventory(player->peer_id);
2693                                 }
2694                         }
2695
2696                         /*
2697                                 Remove the node
2698                                 (this takes some time so it is done after the quick stuff)
2699                         */
2700                         {
2701                                 MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2702
2703                                 m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
2704                         }
2705                         /*
2706                                 Set blocks not sent to far players
2707                         */
2708                         for(core::list<u16>::Iterator
2709                                         i = far_players.begin();
2710                                         i != far_players.end(); i++)
2711                         {
2712                                 u16 peer_id = *i;
2713                                 RemoteClient *client = getClient(peer_id);
2714                                 if(client==NULL)
2715                                         continue;
2716                                 client->SetBlocksNotSent(modified_blocks);
2717                         }
2718                 }
2719
2720                 /*
2721                         1: place block
2722                 */
2723                 else if(action == 1)
2724                 {
2725
2726                         InventoryList *ilist = player->inventory.getList("main");
2727                         if(ilist == NULL)
2728                                 return;
2729
2730                         // Get item
2731                         InventoryItem *item = ilist->getItem(item_i);
2732
2733                         // If there is no item, it is not possible to add it anywhere
2734                         if(item == NULL)
2735                                 return;
2736
2737                         /*
2738                                 Handle material items
2739                         */
2740                         if(std::string("MaterialItem") == item->getName())
2741                         {
2742                                 try{
2743                                         // Don't add a node if this is not a free space
2744                                         MapNode n2 = m_env.getMap().getNode(p_over);
2745                                         bool no_enough_privs =
2746                                                         ((getPlayerPrivs(player) & PRIV_BUILD)==0);
2747                                         if(no_enough_privs)
2748                                                 dstream<<"Player "<<player->getName()<<" cannot add node"
2749                                                         <<" because privileges are "<<getPlayerPrivs(player)
2750                                                         <<std::endl;
2751
2752                                         if(content_features(n2).buildable_to == false
2753                                                 || no_enough_privs)
2754                                         {
2755                                                 // Client probably has wrong data.
2756                                                 // Set block not sent, so that client will get
2757                                                 // a valid one.
2758                                                 dstream<<"Client "<<peer_id<<" tried to place"
2759                                                                 <<" node in invalid position; setting"
2760                                                                 <<" MapBlock not sent."<<std::endl;
2761                                                 RemoteClient *client = getClient(peer_id);
2762                                                 v3s16 blockpos = getNodeBlockPos(p_over);
2763                                                 client->SetBlockNotSent(blockpos);
2764                                                 return;
2765                                         }
2766                                 }
2767                                 catch(InvalidPositionException &e)
2768                                 {
2769                                         derr_server<<"Server: Ignoring ADDNODE: Node not found"
2770                                                         <<" Adding block to emerge queue."
2771                                                         <<std::endl;
2772                                         m_emerge_queue.addBlock(peer_id,
2773                                                         getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2774                                         return;
2775                                 }
2776
2777                                 // Reset build time counter
2778                                 getClient(peer->id)->m_time_from_building = 0.0;
2779
2780                                 // Create node data
2781                                 MaterialItem *mitem = (MaterialItem*)item;
2782                                 MapNode n;
2783                                 n.setContent(mitem->getMaterial());
2784
2785                                 // Calculate direction for wall mounted stuff
2786                                 if(content_features(n).wall_mounted)
2787                                         n.param2 = packDir(p_under - p_over);
2788
2789                                 // Calculate the direction for furnaces and chests and stuff
2790                                 if(content_features(n).param_type == CPT_FACEDIR_SIMPLE)
2791                                 {
2792                                         v3f playerpos = player->getPosition();
2793                                         v3f blockpos = intToFloat(p_over, BS) - playerpos;
2794                                         blockpos = blockpos.normalize();
2795                                         n.param1 = 0;
2796                                         if (fabs(blockpos.X) > fabs(blockpos.Z)) {
2797                                                 if (blockpos.X < 0)
2798                                                         n.param1 = 3;
2799                                                 else
2800                                                         n.param1 = 1;
2801                                         } else {
2802                                                 if (blockpos.Z < 0)
2803                                                         n.param1 = 2;
2804                                                 else
2805                                                         n.param1 = 0;
2806                                         }
2807                                 }
2808
2809                                 /*
2810                                         Send to all close-by players
2811                                 */
2812                                 core::list<u16> far_players;
2813                                 sendAddNode(p_over, n, 0, &far_players, 30);
2814
2815                                 /*
2816                                         Handle inventory
2817                                 */
2818                                 InventoryList *ilist = player->inventory.getList("main");
2819                                 if(g_settings.getBool("creative_mode") == false && ilist)
2820                                 {
2821                                         // Remove from inventory and send inventory
2822                                         if(mitem->getCount() == 1)
2823                                                 ilist->deleteItem(item_i);
2824                                         else
2825                                                 mitem->remove(1);
2826                                         // Send inventory
2827                                         UpdateCrafting(peer_id);
2828                                         SendInventory(peer_id);
2829                                 }
2830
2831                                 /*
2832                                         Add node.
2833
2834                                         This takes some time so it is done after the quick stuff
2835                                 */
2836                                 core::map<v3s16, MapBlock*> modified_blocks;
2837                                 {
2838                                         MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2839
2840                                         m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
2841                                 }
2842                                 /*
2843                                         Set blocks not sent to far players
2844                                 */
2845                                 for(core::list<u16>::Iterator
2846                                                 i = far_players.begin();
2847                                                 i != far_players.end(); i++)
2848                                 {
2849                                         u16 peer_id = *i;
2850                                         RemoteClient *client = getClient(peer_id);
2851                                         if(client==NULL)
2852                                                 continue;
2853                                         client->SetBlocksNotSent(modified_blocks);
2854                                 }
2855
2856                                 /*
2857                                         Calculate special events
2858                                 */
2859
2860                                 /*if(n.d == CONTENT_MESE)
2861                                 {
2862                                         u32 count = 0;
2863                                         for(s16 z=-1; z<=1; z++)
2864                                         for(s16 y=-1; y<=1; y++)
2865                                         for(s16 x=-1; x<=1; x++)
2866                                         {
2867
2868                                         }
2869                                 }*/
2870                         }
2871                         /*
2872                                 Place other item (not a block)
2873                         */
2874                         else
2875                         {
2876                                 v3s16 blockpos = getNodeBlockPos(p_over);
2877
2878                                 /*
2879                                         Check that the block is loaded so that the item
2880                                         can properly be added to the static list too
2881                                 */
2882                                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
2883                                 if(block==NULL)
2884                                 {
2885                                         derr_server<<"Error while placing object: "
2886                                                         "block not found"<<std::endl;
2887                                         return;
2888                                 }
2889
2890                                 dout_server<<"Placing a miscellaneous item on map"
2891                                                 <<std::endl;
2892
2893                                 // Calculate a position for it
2894                                 v3f pos = intToFloat(p_over, BS);
2895                                 //pos.Y -= BS*0.45;
2896                                 pos.Y -= BS*0.25; // let it drop a bit
2897                                 // Randomize a bit
2898                                 pos.X += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2899                                 pos.Z += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2900
2901                                 /*
2902                                         Create the object
2903                                 */
2904                                 ServerActiveObject *obj = item->createSAO(&m_env, 0, pos);
2905
2906                                 if(obj == NULL)
2907                                 {
2908                                         derr_server<<"WARNING: item resulted in NULL object, "
2909                                                         <<"not placing onto map"
2910                                                         <<std::endl;
2911                                 }
2912                                 else
2913                                 {
2914                                         // Add the object to the environment
2915                                         m_env.addActiveObject(obj);
2916
2917                                         dout_server<<"Placed object"<<std::endl;
2918
2919                                         if(g_settings.getBool("creative_mode") == false)
2920                                         {
2921                                                 // Delete the right amount of items from the slot
2922                                                 u16 dropcount = item->getDropCount();
2923
2924                                                 // Delete item if all gone
2925                                                 if(item->getCount() <= dropcount)
2926                                                 {
2927                                                         if(item->getCount() < dropcount)
2928                                                                 dstream<<"WARNING: Server: dropped more items"
2929                                                                                 <<" than the slot contains"<<std::endl;
2930
2931                                                         InventoryList *ilist = player->inventory.getList("main");
2932                                                         if(ilist)
2933                                                                 // Remove from inventory and send inventory
2934                                                                 ilist->deleteItem(item_i);
2935                                                 }
2936                                                 // Else decrement it
2937                                                 else
2938                                                         item->remove(dropcount);
2939
2940                                                 // Send inventory
2941                                                 UpdateCrafting(peer_id);
2942                                                 SendInventory(peer_id);
2943                                         }
2944                                 }
2945                         }
2946
2947                 } // action == 1
2948
2949                 /*
2950                         Catch invalid actions
2951                 */
2952                 else
2953                 {
2954                         derr_server<<"WARNING: Server: Invalid action "
2955                                         <<action<<std::endl;
2956                 }
2957         }
2958 #if 0
2959         else if(command == TOSERVER_RELEASE)
2960         {
2961                 if(datasize < 3)
2962                         return;
2963                 /*
2964                         length: 3
2965                         [0] u16 command
2966                         [2] u8 button
2967                 */
2968                 dstream<<"TOSERVER_RELEASE ignored"<<std::endl;
2969         }
2970 #endif
2971         else if(command == TOSERVER_SIGNTEXT)
2972         {
2973                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2974                         return;
2975                 /*
2976                         u16 command
2977                         v3s16 blockpos
2978                         s16 id
2979                         u16 textlen
2980                         textdata
2981                 */
2982                 std::string datastring((char*)&data[2], datasize-2);
2983                 std::istringstream is(datastring, std::ios_base::binary);
2984                 u8 buf[6];
2985                 // Read stuff
2986                 is.read((char*)buf, 6);
2987                 v3s16 blockpos = readV3S16(buf);
2988                 is.read((char*)buf, 2);
2989                 s16 id = readS16(buf);
2990                 is.read((char*)buf, 2);
2991                 u16 textlen = readU16(buf);
2992                 std::string text;
2993                 for(u16 i=0; i<textlen; i++)
2994                 {
2995                         is.read((char*)buf, 1);
2996                         text += (char)buf[0];
2997                 }
2998
2999                 MapBlock *block = NULL;
3000                 try
3001                 {
3002                         block = m_env.getMap().getBlockNoCreate(blockpos);
3003                 }
3004                 catch(InvalidPositionException &e)
3005                 {
3006                         derr_server<<"Error while setting sign text: "
3007                                         "block not found"<<std::endl;
3008                         return;
3009                 }
3010
3011                 MapBlockObject *obj = block->getObject(id);
3012                 if(obj == NULL)
3013                 {
3014                         derr_server<<"Error while setting sign text: "
3015                                         "object not found"<<std::endl;
3016                         return;
3017                 }
3018
3019                 if(obj->getTypeId() != MAPBLOCKOBJECT_TYPE_SIGN)
3020                 {
3021                         derr_server<<"Error while setting sign text: "
3022                                         "object is not a sign"<<std::endl;
3023                         return;
3024                 }
3025
3026                 ((SignObject*)obj)->setText(text);
3027
3028                 obj->getBlock()->setChangedFlag();
3029         }
3030         else if(command == TOSERVER_SIGNNODETEXT)
3031         {
3032                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3033                         return;
3034                 /*
3035                         u16 command
3036                         v3s16 p
3037                         u16 textlen
3038                         textdata
3039                 */
3040                 std::string datastring((char*)&data[2], datasize-2);
3041                 std::istringstream is(datastring, std::ios_base::binary);
3042                 u8 buf[6];
3043                 // Read stuff
3044                 is.read((char*)buf, 6);
3045                 v3s16 p = readV3S16(buf);
3046                 is.read((char*)buf, 2);
3047                 u16 textlen = readU16(buf);
3048                 std::string text;
3049                 for(u16 i=0; i<textlen; i++)
3050                 {
3051                         is.read((char*)buf, 1);
3052                         text += (char)buf[0];
3053                 }
3054
3055                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3056                 if(!meta)
3057                         return;
3058                 if(meta->typeId() != CONTENT_SIGN_WALL)
3059                         return;
3060                 SignNodeMetadata *signmeta = (SignNodeMetadata*)meta;
3061                 signmeta->setText(text);
3062
3063                 v3s16 blockpos = getNodeBlockPos(p);
3064                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
3065                 if(block)
3066                 {
3067                         block->setChangedFlag();
3068                 }
3069
3070                 for(core::map<u16, RemoteClient*>::Iterator
3071                         i = m_clients.getIterator();
3072                         i.atEnd()==false; i++)
3073                 {
3074                         RemoteClient *client = i.getNode()->getValue();
3075                         client->SetBlockNotSent(blockpos);
3076                 }
3077         }
3078         else if(command == TOSERVER_INVENTORY_ACTION)
3079         {
3080                 /*// Ignore inventory changes if in creative mode
3081                 if(g_settings.getBool("creative_mode") == true)
3082                 {
3083                         dstream<<"TOSERVER_INVENTORY_ACTION: ignoring in creative mode"
3084                                         <<std::endl;
3085                         return;
3086                 }*/
3087                 // Strip command and create a stream
3088                 std::string datastring((char*)&data[2], datasize-2);
3089                 dstream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
3090                 std::istringstream is(datastring, std::ios_base::binary);
3091                 // Create an action
3092                 InventoryAction *a = InventoryAction::deSerialize(is);
3093                 if(a != NULL)
3094                 {
3095                         // Create context
3096                         InventoryContext c;
3097                         c.current_player = player;
3098
3099                         /*
3100                                 Handle craftresult specially if not in creative mode
3101                         */
3102                         bool disable_action = false;
3103                         if(a->getType() == IACTION_MOVE
3104                                         && g_settings.getBool("creative_mode") == false)
3105                         {
3106                                 IMoveAction *ma = (IMoveAction*)a;
3107                                 if(ma->to_inv == "current_player" &&
3108                                                 ma->from_inv == "current_player")
3109                                 {
3110                                         InventoryList *rlist = player->inventory.getList("craftresult");
3111                                         assert(rlist);
3112                                         InventoryList *clist = player->inventory.getList("craft");
3113                                         assert(clist);
3114                                         InventoryList *mlist = player->inventory.getList("main");
3115                                         assert(mlist);
3116                                         /*
3117                                                 Craftresult is no longer preview if something
3118                                                 is moved into it
3119                                         */
3120                                         if(ma->to_list == "craftresult"
3121                                                         && ma->from_list != "craftresult")
3122                                         {
3123                                                 // If it currently is a preview, remove
3124                                                 // its contents
3125                                                 if(player->craftresult_is_preview)
3126                                                 {
3127                                                         rlist->deleteItem(0);
3128                                                 }
3129                                                 player->craftresult_is_preview = false;
3130                                         }
3131                                         /*
3132                                                 Crafting takes place if this condition is true.
3133                                         */
3134                                         if(player->craftresult_is_preview &&
3135                                                         ma->from_list == "craftresult")
3136                                         {
3137                                                 player->craftresult_is_preview = false;
3138                                                 clist->decrementMaterials(1);
3139                                         }
3140                                         /*
3141                                                 If the craftresult is placed on itself, move it to
3142                                                 main inventory instead of doing the action
3143                                         */
3144                                         if(ma->to_list == "craftresult"
3145                                                         && ma->from_list == "craftresult")
3146                                         {
3147                                                 disable_action = true;
3148
3149                                                 InventoryItem *item1 = rlist->changeItem(0, NULL);
3150                                                 mlist->addItem(item1);
3151                                         }
3152                                 }
3153                         }
3154
3155                         if(disable_action == false)
3156                         {
3157                                 // Feed action to player inventory
3158                                 a->apply(&c, this);
3159                                 // Eat the action
3160                                 delete a;
3161                         }
3162                         else
3163                         {
3164                                 // Send inventory
3165                                 UpdateCrafting(player->peer_id);
3166                                 SendInventory(player->peer_id);
3167                         }
3168                 }
3169                 else
3170                 {
3171                         dstream<<"TOSERVER_INVENTORY_ACTION: "
3172                                         <<"InventoryAction::deSerialize() returned NULL"
3173                                         <<std::endl;
3174                 }
3175         }
3176         else if(command == TOSERVER_CHAT_MESSAGE)
3177         {
3178                 /*
3179                         u16 command
3180                         u16 length
3181                         wstring message
3182                 */
3183                 u8 buf[6];
3184                 std::string datastring((char*)&data[2], datasize-2);
3185                 std::istringstream is(datastring, std::ios_base::binary);
3186
3187                 // Read stuff
3188                 is.read((char*)buf, 2);
3189                 u16 len = readU16(buf);
3190
3191                 std::wstring message;
3192                 for(u16 i=0; i<len; i++)
3193                 {
3194                         is.read((char*)buf, 2);
3195                         message += (wchar_t)readU16(buf);
3196                 }
3197
3198                 // Get player name of this client
3199                 std::wstring name = narrow_to_wide(player->getName());
3200
3201                 // Line to send to players
3202                 std::wstring line;
3203                 // Whether to send to the player that sent the line
3204                 bool send_to_sender = false;
3205                 // Whether to send to other players
3206                 bool send_to_others = false;
3207
3208                 // Local player gets all privileges regardless of
3209                 // what's set on their account.
3210                 u64 privs = getPlayerPrivs(player);
3211
3212                 // Parse commands
3213                 std::wstring commandprefix = L"/#";
3214                 if(message.substr(0, commandprefix.size()) == commandprefix)
3215                 {
3216                         line += L"Server: ";
3217
3218                         message = message.substr(commandprefix.size());
3219
3220                         WStrfnd f1(message);
3221                         f1.next(L" "); // Skip over /#whatever
3222                         std::wstring paramstring = f1.next(L"");
3223
3224                         ServerCommandContext *ctx = new ServerCommandContext(
3225                                 str_split(message, L' '),
3226                                 paramstring,
3227                                 this,
3228                                 &m_env,
3229                                 player,
3230                                 privs);
3231
3232                         line += processServerCommand(ctx);
3233                         send_to_sender = ctx->flags & 1;
3234                         send_to_others = ctx->flags & 2;
3235                         delete ctx;
3236
3237                 }
3238                 else
3239                 {
3240                         if(privs & PRIV_SHOUT)
3241                         {
3242                                 line += L"<";
3243                                 line += name;
3244                                 line += L"> ";
3245                                 line += message;
3246                                 send_to_others = true;
3247                         }
3248                         else
3249                         {
3250                                 line += L"Server: You are not allowed to shout";
3251                                 send_to_sender = true;
3252                         }
3253                 }
3254
3255                 if(line != L"")
3256                 {
3257                         dstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
3258
3259                         /*
3260                                 Send the message to clients
3261                         */
3262                         for(core::map<u16, RemoteClient*>::Iterator
3263                                 i = m_clients.getIterator();
3264                                 i.atEnd() == false; i++)
3265                         {
3266                                 // Get client and check that it is valid
3267                                 RemoteClient *client = i.getNode()->getValue();
3268                                 assert(client->peer_id == i.getNode()->getKey());
3269                                 if(client->serialization_version == SER_FMT_VER_INVALID)
3270                                         continue;
3271
3272                                 // Filter recipient
3273                                 bool sender_selected = (peer_id == client->peer_id);
3274                                 if(sender_selected == true && send_to_sender == false)
3275                                         continue;
3276                                 if(sender_selected == false && send_to_others == false)
3277                                         continue;
3278
3279                                 SendChatMessage(client->peer_id, line);
3280                         }
3281                 }
3282         }
3283         else if(command == TOSERVER_DAMAGE)
3284         {
3285                 if(g_settings.getBool("enable_damage"))
3286                 {
3287                         std::string datastring((char*)&data[2], datasize-2);
3288                         std::istringstream is(datastring, std::ios_base::binary);
3289                         u8 damage = readU8(is);
3290                         if(player->hp > damage)
3291                         {
3292                                 player->hp -= damage;
3293                         }
3294                         else
3295                         {
3296                                 player->hp = 0;
3297
3298                                 dstream<<"TODO: Server: TOSERVER_HP_DECREMENT: Player dies"
3299                                                 <<std::endl;
3300
3301                                 v3f pos = findSpawnPos(m_env.getServerMap());
3302                                 player->setPosition(pos);
3303                                 player->hp = 20;
3304                                 SendMovePlayer(player);
3305                                 SendPlayerHP(player);
3306
3307                                 //TODO: Throw items around
3308                         }
3309                 }
3310
3311                 SendPlayerHP(player);
3312         }
3313         else if(command == TOSERVER_PASSWORD)
3314         {
3315                 /*
3316                         [0] u16 TOSERVER_PASSWORD
3317                         [2] u8[28] old password
3318                         [30] u8[28] new password
3319                 */
3320
3321                 if(datasize != 2+PASSWORD_SIZE*2)
3322                         return;
3323                 /*char password[PASSWORD_SIZE];
3324                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3325                         password[i] = data[2+i];
3326                 password[PASSWORD_SIZE-1] = 0;*/
3327                 std::string oldpwd;
3328                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3329                 {
3330                         char c = data[2+i];
3331                         if(c == 0)
3332                                 break;
3333                         oldpwd += c;
3334                 }
3335                 std::string newpwd;
3336                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3337                 {
3338                         char c = data[2+PASSWORD_SIZE+i];
3339                         if(c == 0)
3340                                 break;
3341                         newpwd += c;
3342                 }
3343
3344                 std::string playername = player->getName();
3345
3346                 if(m_authmanager.exists(playername) == false)
3347                 {
3348                         dstream<<"Server: playername not found in authmanager"<<std::endl;
3349                         // Wrong old password supplied!!
3350                         SendChatMessage(peer_id, L"playername not found in authmanager");
3351                         return;
3352                 }
3353
3354                 std::string checkpwd = m_authmanager.getPassword(playername);
3355
3356                 if(oldpwd != checkpwd)
3357                 {
3358                         dstream<<"Server: invalid old password"<<std::endl;
3359                         // Wrong old password supplied!!
3360                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
3361                         return;
3362                 }
3363
3364                 m_authmanager.setPassword(playername, newpwd);
3365
3366                 dstream<<"Server: password change successful for "<<playername
3367                                 <<std::endl;
3368                 SendChatMessage(peer_id, L"Password change successful");
3369         }
3370         else
3371         {
3372                 derr_server<<"WARNING: Server::ProcessData(): Ignoring "
3373                                 "unknown command "<<command<<std::endl;
3374         }
3375
3376         } //try
3377         catch(SendFailedException &e)
3378         {
3379                 derr_server<<"Server::ProcessData(): SendFailedException: "
3380                                 <<"what="<<e.what()
3381                                 <<std::endl;
3382         }
3383 }
3384
3385 void Server::onMapEditEvent(MapEditEvent *event)
3386 {
3387         //dstream<<"Server::onMapEditEvent()"<<std::endl;
3388         if(m_ignore_map_edit_events)
3389                 return;
3390         MapEditEvent *e = event->clone();
3391         m_unsent_map_edit_queue.push_back(e);
3392 }
3393
3394 Inventory* Server::getInventory(InventoryContext *c, std::string id)
3395 {
3396         if(id == "current_player")
3397         {
3398                 assert(c->current_player);
3399                 return &(c->current_player->inventory);
3400         }
3401
3402         Strfnd fn(id);
3403         std::string id0 = fn.next(":");
3404
3405         if(id0 == "nodemeta")
3406         {
3407                 v3s16 p;
3408                 p.X = stoi(fn.next(","));
3409                 p.Y = stoi(fn.next(","));
3410                 p.Z = stoi(fn.next(","));
3411                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3412                 if(meta)
3413                         return meta->getInventory();
3414                 dstream<<"nodemeta at ("<<p.X<<","<<p.Y<<","<<p.Z<<"): "
3415                                 <<"no metadata found"<<std::endl;
3416                 return NULL;
3417         }
3418
3419         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3420         return NULL;
3421 }
3422 void Server::inventoryModified(InventoryContext *c, std::string id)
3423 {
3424         if(id == "current_player")
3425         {
3426                 assert(c->current_player);
3427                 // Send inventory
3428                 UpdateCrafting(c->current_player->peer_id);
3429                 SendInventory(c->current_player->peer_id);
3430                 return;
3431         }
3432
3433         Strfnd fn(id);
3434         std::string id0 = fn.next(":");
3435
3436         if(id0 == "nodemeta")
3437         {
3438                 v3s16 p;
3439                 p.X = stoi(fn.next(","));
3440                 p.Y = stoi(fn.next(","));
3441                 p.Z = stoi(fn.next(","));
3442                 v3s16 blockpos = getNodeBlockPos(p);
3443
3444                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3445                 if(meta)
3446                         meta->inventoryModified();
3447
3448                 for(core::map<u16, RemoteClient*>::Iterator
3449                         i = m_clients.getIterator();
3450                         i.atEnd()==false; i++)
3451                 {
3452                         RemoteClient *client = i.getNode()->getValue();
3453                         client->SetBlockNotSent(blockpos);
3454                 }
3455
3456                 return;
3457         }
3458
3459         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3460 }
3461
3462 core::list<PlayerInfo> Server::getPlayerInfo()
3463 {
3464         DSTACK(__FUNCTION_NAME);
3465         JMutexAutoLock envlock(m_env_mutex);
3466         JMutexAutoLock conlock(m_con_mutex);
3467
3468         core::list<PlayerInfo> list;
3469
3470         core::list<Player*> players = m_env.getPlayers();
3471
3472         core::list<Player*>::Iterator i;
3473         for(i = players.begin();
3474                         i != players.end(); i++)
3475         {
3476                 PlayerInfo info;
3477
3478                 Player *player = *i;
3479
3480                 try{
3481                         con::Peer *peer = m_con.GetPeer(player->peer_id);
3482                         // Copy info from peer to info struct
3483                         info.id = peer->id;
3484                         info.address = peer->address;
3485                         info.avg_rtt = peer->avg_rtt;
3486                 }
3487                 catch(con::PeerNotFoundException &e)
3488                 {
3489                         // Set dummy peer info
3490                         info.id = 0;
3491                         info.address = Address(0,0,0,0,0);
3492                         info.avg_rtt = 0.0;
3493                 }
3494
3495                 snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
3496                 info.position = player->getPosition();
3497
3498                 list.push_back(info);
3499         }
3500
3501         return list;
3502 }
3503
3504
3505 void Server::peerAdded(con::Peer *peer)
3506 {
3507         DSTACK(__FUNCTION_NAME);
3508         dout_server<<"Server::peerAdded(): peer->id="
3509                         <<peer->id<<std::endl;
3510
3511         PeerChange c;
3512         c.type = PEER_ADDED;
3513         c.peer_id = peer->id;
3514         c.timeout = false;
3515         m_peer_change_queue.push_back(c);
3516 }
3517
3518 void Server::deletingPeer(con::Peer *peer, bool timeout)
3519 {
3520         DSTACK(__FUNCTION_NAME);
3521         dout_server<<"Server::deletingPeer(): peer->id="
3522                         <<peer->id<<", timeout="<<timeout<<std::endl;
3523
3524         PeerChange c;
3525         c.type = PEER_REMOVED;
3526         c.peer_id = peer->id;
3527         c.timeout = timeout;
3528         m_peer_change_queue.push_back(c);
3529 }
3530
3531 /*
3532         Static send methods
3533 */
3534
3535 void Server::SendHP(con::Connection &con, u16 peer_id, u8 hp)
3536 {
3537         DSTACK(__FUNCTION_NAME);
3538         std::ostringstream os(std::ios_base::binary);
3539
3540         writeU16(os, TOCLIENT_HP);
3541         writeU8(os, hp);
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         con.Send(peer_id, 0, data, true);
3548 }
3549
3550 void Server::SendAccessDenied(con::Connection &con, u16 peer_id,
3551                 const std::wstring &reason)
3552 {
3553         DSTACK(__FUNCTION_NAME);
3554         std::ostringstream os(std::ios_base::binary);
3555
3556         writeU16(os, TOCLIENT_ACCESS_DENIED);
3557         os<<serializeWideString(reason);
3558
3559         // Make data buffer
3560         std::string s = os.str();
3561         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3562         // Send as reliable
3563         con.Send(peer_id, 0, data, true);
3564 }
3565
3566 /*
3567         Non-static send methods
3568 */
3569
3570 void Server::SendObjectData(float dtime)
3571 {
3572         DSTACK(__FUNCTION_NAME);
3573
3574         core::map<v3s16, bool> stepped_blocks;
3575
3576         for(core::map<u16, RemoteClient*>::Iterator
3577                 i = m_clients.getIterator();
3578                 i.atEnd() == false; i++)
3579         {
3580                 u16 peer_id = i.getNode()->getKey();
3581                 RemoteClient *client = i.getNode()->getValue();
3582                 assert(client->peer_id == peer_id);
3583
3584                 if(client->serialization_version == SER_FMT_VER_INVALID)
3585                         continue;
3586
3587                 client->SendObjectData(this, dtime, stepped_blocks);
3588         }
3589 }
3590
3591 void Server::SendPlayerInfos()
3592 {
3593         DSTACK(__FUNCTION_NAME);
3594
3595         //JMutexAutoLock envlock(m_env_mutex);
3596
3597         // Get connected players
3598         core::list<Player*> players = m_env.getPlayers(true);
3599
3600         u32 player_count = players.getSize();
3601         u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
3602
3603         SharedBuffer<u8> data(datasize);
3604         writeU16(&data[0], TOCLIENT_PLAYERINFO);
3605
3606         u32 start = 2;
3607         core::list<Player*>::Iterator i;
3608         for(i = players.begin();
3609                         i != players.end(); i++)
3610         {
3611                 Player *player = *i;
3612
3613                 /*dstream<<"Server sending player info for player with "
3614                                 "peer_id="<<player->peer_id<<std::endl;*/
3615
3616                 writeU16(&data[start], player->peer_id);
3617                 memset((char*)&data[start+2], 0, PLAYERNAME_SIZE);
3618                 snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
3619                 start += 2+PLAYERNAME_SIZE;
3620         }
3621
3622         //JMutexAutoLock conlock(m_con_mutex);
3623
3624         // Send as reliable
3625         m_con.SendToAll(0, data, true);
3626 }
3627
3628 void Server::SendInventory(u16 peer_id)
3629 {
3630         DSTACK(__FUNCTION_NAME);
3631
3632         Player* player = m_env.getPlayer(peer_id);
3633         assert(player);
3634
3635         /*
3636                 Serialize it
3637         */
3638
3639         std::ostringstream os;
3640         //os.imbue(std::locale("C"));
3641
3642         player->inventory.serialize(os);
3643
3644         std::string s = os.str();
3645
3646         SharedBuffer<u8> data(s.size()+2);
3647         writeU16(&data[0], TOCLIENT_INVENTORY);
3648         memcpy(&data[2], s.c_str(), s.size());
3649
3650         // Send as reliable
3651         m_con.Send(peer_id, 0, data, true);
3652 }
3653
3654 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3655 {
3656         DSTACK(__FUNCTION_NAME);
3657
3658         std::ostringstream os(std::ios_base::binary);
3659         u8 buf[12];
3660
3661         // Write command
3662         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3663         os.write((char*)buf, 2);
3664
3665         // Write length
3666         writeU16(buf, message.size());
3667         os.write((char*)buf, 2);
3668
3669         // Write string
3670         for(u32 i=0; i<message.size(); i++)
3671         {
3672                 u16 w = message[i];
3673                 writeU16(buf, w);
3674                 os.write((char*)buf, 2);
3675         }
3676
3677         // Make data buffer
3678         std::string s = os.str();
3679         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3680         // Send as reliable
3681         m_con.Send(peer_id, 0, data, true);
3682 }
3683
3684 void Server::BroadcastChatMessage(const std::wstring &message)
3685 {
3686         for(core::map<u16, RemoteClient*>::Iterator
3687                 i = m_clients.getIterator();
3688                 i.atEnd() == false; i++)
3689         {
3690                 // Get client and check that it is valid
3691                 RemoteClient *client = i.getNode()->getValue();
3692                 assert(client->peer_id == i.getNode()->getKey());
3693                 if(client->serialization_version == SER_FMT_VER_INVALID)
3694                         continue;
3695
3696                 SendChatMessage(client->peer_id, message);
3697         }
3698 }
3699
3700 void Server::SendPlayerHP(Player *player)
3701 {
3702         SendHP(m_con, player->peer_id, player->hp);
3703 }
3704
3705 void Server::SendMovePlayer(Player *player)
3706 {
3707         DSTACK(__FUNCTION_NAME);
3708         std::ostringstream os(std::ios_base::binary);
3709
3710         writeU16(os, TOCLIENT_MOVE_PLAYER);
3711         writeV3F1000(os, player->getPosition());
3712         writeF1000(os, player->getPitch());
3713         writeF1000(os, player->getYaw());
3714
3715         {
3716                 v3f pos = player->getPosition();
3717                 f32 pitch = player->getPitch();
3718                 f32 yaw = player->getYaw();
3719                 dstream<<"Server sending TOCLIENT_MOVE_PLAYER"
3720                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3721                                 <<" pitch="<<pitch
3722                                 <<" yaw="<<yaw
3723                                 <<std::endl;
3724         }
3725
3726         // Make data buffer
3727         std::string s = os.str();
3728         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3729         // Send as reliable
3730         m_con.Send(player->peer_id, 0, data, true);
3731 }
3732
3733 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3734         core::list<u16> *far_players, float far_d_nodes)
3735 {
3736         float maxd = far_d_nodes*BS;
3737         v3f p_f = intToFloat(p, BS);
3738
3739         // Create packet
3740         u32 replysize = 8;
3741         SharedBuffer<u8> reply(replysize);
3742         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3743         writeS16(&reply[2], p.X);
3744         writeS16(&reply[4], p.Y);
3745         writeS16(&reply[6], p.Z);
3746
3747         for(core::map<u16, RemoteClient*>::Iterator
3748                 i = m_clients.getIterator();
3749                 i.atEnd() == false; i++)
3750         {
3751                 // Get client and check that it is valid
3752                 RemoteClient *client = i.getNode()->getValue();
3753                 assert(client->peer_id == i.getNode()->getKey());
3754                 if(client->serialization_version == SER_FMT_VER_INVALID)
3755                         continue;
3756
3757                 // Don't send if it's the same one
3758                 if(client->peer_id == ignore_id)
3759                         continue;
3760
3761                 if(far_players)
3762                 {
3763                         // Get player
3764                         Player *player = m_env.getPlayer(client->peer_id);
3765                         if(player)
3766                         {
3767                                 // If player is far away, only set modified blocks not sent
3768                                 v3f player_pos = player->getPosition();
3769                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3770                                 {
3771                                         far_players->push_back(client->peer_id);
3772                                         continue;
3773                                 }
3774                         }
3775                 }
3776
3777                 // Send as reliable
3778                 m_con.Send(client->peer_id, 0, reply, true);
3779         }
3780 }
3781
3782 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3783                 core::list<u16> *far_players, float far_d_nodes)
3784 {
3785         float maxd = far_d_nodes*BS;
3786         v3f p_f = intToFloat(p, BS);
3787
3788         for(core::map<u16, RemoteClient*>::Iterator
3789                 i = m_clients.getIterator();
3790                 i.atEnd() == false; i++)
3791         {
3792                 // Get client and check that it is valid
3793                 RemoteClient *client = i.getNode()->getValue();
3794                 assert(client->peer_id == i.getNode()->getKey());
3795                 if(client->serialization_version == SER_FMT_VER_INVALID)
3796                         continue;
3797
3798                 // Don't send if it's the same one
3799                 if(client->peer_id == ignore_id)
3800                         continue;
3801
3802                 if(far_players)
3803                 {
3804                         // Get player
3805                         Player *player = m_env.getPlayer(client->peer_id);
3806                         if(player)
3807                         {
3808                                 // If player is far away, only set modified blocks not sent
3809                                 v3f player_pos = player->getPosition();
3810                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3811                                 {
3812                                         far_players->push_back(client->peer_id);
3813                                         continue;
3814                                 }
3815                         }
3816                 }
3817
3818                 // Create packet
3819                 u32 replysize = 8 + MapNode::serializedLength(client->serialization_version);
3820                 SharedBuffer<u8> reply(replysize);
3821                 writeU16(&reply[0], TOCLIENT_ADDNODE);
3822                 writeS16(&reply[2], p.X);
3823                 writeS16(&reply[4], p.Y);
3824                 writeS16(&reply[6], p.Z);
3825                 n.serialize(&reply[8], client->serialization_version);
3826
3827                 // Send as reliable
3828                 m_con.Send(client->peer_id, 0, reply, true);
3829         }
3830 }
3831
3832 void Server::setBlockNotSent(v3s16 p)
3833 {
3834         for(core::map<u16, RemoteClient*>::Iterator
3835                 i = m_clients.getIterator();
3836                 i.atEnd()==false; i++)
3837         {
3838                 RemoteClient *client = i.getNode()->getValue();
3839                 client->SetBlockNotSent(p);
3840         }
3841 }
3842
3843 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
3844 {
3845         DSTACK(__FUNCTION_NAME);
3846
3847         v3s16 p = block->getPos();
3848
3849 #if 0
3850         // Analyze it a bit
3851         bool completely_air = true;
3852         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
3853         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
3854         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
3855         {
3856                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
3857                 {
3858                         completely_air = false;
3859                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
3860                 }
3861         }
3862
3863         // Print result
3864         dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
3865         if(completely_air)
3866                 dstream<<"[completely air] ";
3867         dstream<<std::endl;
3868 #endif
3869
3870         /*
3871                 Create a packet with the block in the right format
3872         */
3873
3874         std::ostringstream os(std::ios_base::binary);
3875         block->serialize(os, ver);
3876         std::string s = os.str();
3877         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
3878
3879         u32 replysize = 8 + blockdata.getSize();
3880         SharedBuffer<u8> reply(replysize);
3881         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
3882         writeS16(&reply[2], p.X);
3883         writeS16(&reply[4], p.Y);
3884         writeS16(&reply[6], p.Z);
3885         memcpy(&reply[8], *blockdata, blockdata.getSize());
3886
3887         /*dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3888                         <<":  \tpacket size: "<<replysize<<std::endl;*/
3889
3890         /*
3891                 Send packet
3892         */
3893         m_con.Send(peer_id, 1, reply, true);
3894 }
3895
3896 void Server::SendBlocks(float dtime)
3897 {
3898         DSTACK(__FUNCTION_NAME);
3899
3900         JMutexAutoLock envlock(m_env_mutex);
3901         JMutexAutoLock conlock(m_con_mutex);
3902
3903         //TimeTaker timer("Server::SendBlocks");
3904
3905         core::array<PrioritySortedBlockTransfer> queue;
3906
3907         s32 total_sending = 0;
3908
3909         {
3910                 ScopeProfiler sp(&g_profiler, "Server: selecting blocks for sending");
3911
3912                 for(core::map<u16, RemoteClient*>::Iterator
3913                         i = m_clients.getIterator();
3914                         i.atEnd() == false; i++)
3915                 {
3916                         RemoteClient *client = i.getNode()->getValue();
3917                         assert(client->peer_id == i.getNode()->getKey());
3918
3919                         total_sending += client->SendingCount();
3920
3921                         if(client->serialization_version == SER_FMT_VER_INVALID)
3922                                 continue;
3923
3924                         client->GetNextBlocks(this, dtime, queue);
3925                 }
3926         }
3927
3928         // Sort.
3929         // Lowest priority number comes first.
3930         // Lowest is most important.
3931         queue.sort();
3932
3933         for(u32 i=0; i<queue.size(); i++)
3934         {
3935                 //TODO: Calculate limit dynamically
3936                 if(total_sending >= g_settings.getS32
3937                                 ("max_simultaneous_block_sends_server_total"))
3938                         break;
3939
3940                 PrioritySortedBlockTransfer q = queue[i];
3941
3942                 MapBlock *block = NULL;
3943                 try
3944                 {
3945                         block = m_env.getMap().getBlockNoCreate(q.pos);
3946                 }
3947                 catch(InvalidPositionException &e)
3948                 {
3949                         continue;
3950                 }
3951
3952                 RemoteClient *client = getClient(q.peer_id);
3953
3954                 SendBlockNoLock(q.peer_id, block, client->serialization_version);
3955
3956                 client->SentBlock(q.pos);
3957
3958                 total_sending++;
3959         }
3960 }
3961
3962 /*
3963         Something random
3964 */
3965
3966 void Server::UpdateCrafting(u16 peer_id)
3967 {
3968         DSTACK(__FUNCTION_NAME);
3969
3970         Player* player = m_env.getPlayer(peer_id);
3971         assert(player);
3972
3973         /*
3974                 Calculate crafting stuff
3975         */
3976         if(g_settings.getBool("creative_mode") == false)
3977         {
3978                 InventoryList *clist = player->inventory.getList("craft");
3979                 InventoryList *rlist = player->inventory.getList("craftresult");
3980
3981                 if(rlist->getUsedSlots() == 0)
3982                         player->craftresult_is_preview = true;
3983
3984                 if(rlist && player->craftresult_is_preview)
3985                 {
3986                         rlist->clearItems();
3987                 }
3988                 if(clist && rlist && player->craftresult_is_preview)
3989                 {
3990                         InventoryItem *items[9];
3991                         for(u16 i=0; i<9; i++)
3992                         {
3993                                 items[i] = clist->getItem(i);
3994                         }
3995
3996                         // Get result of crafting grid
3997                         InventoryItem *result = craft_get_result(items);
3998                         if(result)
3999                                 rlist->addItem(result);
4000                 }
4001
4002         } // if creative_mode == false
4003 }
4004
4005 RemoteClient* Server::getClient(u16 peer_id)
4006 {
4007         DSTACK(__FUNCTION_NAME);
4008         //JMutexAutoLock lock(m_con_mutex);
4009         core::map<u16, RemoteClient*>::Node *n;
4010         n = m_clients.find(peer_id);
4011         // A client should exist for all peers
4012         assert(n != NULL);
4013         return n->getValue();
4014 }
4015
4016 std::wstring Server::getStatusString()
4017 {
4018         std::wostringstream os(std::ios_base::binary);
4019         os<<L"# Server: ";
4020         // Version
4021         os<<L"version="<<narrow_to_wide(VERSION_STRING);
4022         // Uptime
4023         os<<L", uptime="<<m_uptime.get();
4024         // Information about clients
4025         os<<L", clients={";
4026         for(core::map<u16, RemoteClient*>::Iterator
4027                 i = m_clients.getIterator();
4028                 i.atEnd() == false; i++)
4029         {
4030                 // Get client and check that it is valid
4031                 RemoteClient *client = i.getNode()->getValue();
4032                 assert(client->peer_id == i.getNode()->getKey());
4033                 if(client->serialization_version == SER_FMT_VER_INVALID)
4034                         continue;
4035                 // Get player
4036                 Player *player = m_env.getPlayer(client->peer_id);
4037                 // Get name of player
4038                 std::wstring name = L"unknown";
4039                 if(player != NULL)
4040                         name = narrow_to_wide(player->getName());
4041                 // Add name to information string
4042                 os<<name<<L",";
4043         }
4044         os<<L"}";
4045         if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == false)
4046                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4047         if(g_settings.get("motd") != "")
4048                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings.get("motd"));
4049         return os.str();
4050 }
4051
4052 v3f findSpawnPos(ServerMap &map)
4053 {
4054         //return v3f(50,50,50)*BS;
4055
4056         v2s16 nodepos;
4057         s16 groundheight = 0;
4058
4059 #if 0
4060         nodepos = v2s16(0,0);
4061         groundheight = 20;
4062 #endif
4063
4064 #if 1
4065         // Try to find a good place a few times
4066         for(s32 i=0; i<1000; i++)
4067         {
4068                 s32 range = 1 + i;
4069                 // We're going to try to throw the player to this position
4070                 nodepos = v2s16(-range + (myrand()%(range*2)),
4071                                 -range + (myrand()%(range*2)));
4072                 v2s16 sectorpos = getNodeSectorPos(nodepos);
4073                 // Get sector (NOTE: Don't get because it's slow)
4074                 //m_env.getMap().emergeSector(sectorpos);
4075                 // Get ground height at point (fallbacks to heightmap function)
4076                 groundheight = map.findGroundLevel(nodepos);
4077                 // Don't go underwater
4078                 if(groundheight < WATER_LEVEL)
4079                 {
4080                         //dstream<<"-> Underwater"<<std::endl;
4081                         continue;
4082                 }
4083                 // Don't go to high places
4084                 if(groundheight > WATER_LEVEL + 4)
4085                 {
4086                         //dstream<<"-> Underwater"<<std::endl;
4087                         continue;
4088                 }
4089
4090                 // Found a good place
4091                 //dstream<<"Searched through "<<i<<" places."<<std::endl;
4092                 break;
4093         }
4094 #endif
4095
4096         // If no suitable place was not found, go above water at least.
4097         if(groundheight < WATER_LEVEL)
4098                 groundheight = WATER_LEVEL;
4099
4100         return intToFloat(v3s16(
4101                         nodepos.X,
4102                         groundheight + 3,
4103                         nodepos.Y
4104                         ), BS);
4105 }
4106
4107 Player *Server::emergePlayer(const char *name, const char *password, u16 peer_id)
4108 {
4109         /*
4110                 Try to get an existing player
4111         */
4112         Player *player = m_env.getPlayer(name);
4113         if(player != NULL)
4114         {
4115                 // If player is already connected, cancel
4116                 if(player->peer_id != 0)
4117                 {
4118                         dstream<<"emergePlayer(): Player already connected"<<std::endl;
4119                         return NULL;
4120                 }
4121
4122                 // Got one.
4123                 player->peer_id = peer_id;
4124
4125                 // Reset inventory to creative if in creative mode
4126                 if(g_settings.getBool("creative_mode"))
4127                 {
4128                         craft_set_creative_inventory(player);
4129                 }
4130
4131                 return player;
4132         }
4133
4134         /*
4135                 If player with the wanted peer_id already exists, cancel.
4136         */
4137         if(m_env.getPlayer(peer_id) != NULL)
4138         {
4139                 dstream<<"emergePlayer(): Player with wrong name but same"
4140                                 " peer_id already exists"<<std::endl;
4141                 return NULL;
4142         }
4143
4144         /*
4145                 Create a new player
4146         */
4147         {
4148                 player = new ServerRemotePlayer();
4149                 //player->peer_id = c.peer_id;
4150                 //player->peer_id = PEER_ID_INEXISTENT;
4151                 player->peer_id = peer_id;
4152                 player->updateName(name);
4153                 m_authmanager.add(name);
4154                 m_authmanager.setPassword(name, password);
4155                 m_authmanager.setPrivs(name,
4156                                 stringToPrivs(g_settings.get("default_privs")));
4157
4158                 /*
4159                         Set player position
4160                 */
4161
4162                 dstream<<"Server: Finding spawn place for player \""
4163                                 <<player->getName()<<"\""<<std::endl;
4164
4165                 v3f pos = findSpawnPos(m_env.getServerMap());
4166
4167                 player->setPosition(pos);
4168
4169                 /*
4170                         Add player to environment
4171                 */
4172
4173                 m_env.addPlayer(player);
4174
4175                 /*
4176                         Add stuff to inventory
4177                 */
4178
4179                 if(g_settings.getBool("creative_mode"))
4180                 {
4181                         craft_set_creative_inventory(player);
4182                 }
4183                 else if(g_settings.getBool("give_initial_stuff"))
4184                 {
4185                         craft_give_initial_stuff(player);
4186                 }
4187
4188                 return player;
4189
4190         } // create new player
4191 }
4192
4193 void Server::handlePeerChange(PeerChange &c)
4194 {
4195         JMutexAutoLock envlock(m_env_mutex);
4196         JMutexAutoLock conlock(m_con_mutex);
4197
4198         if(c.type == PEER_ADDED)
4199         {
4200                 /*
4201                         Add
4202                 */
4203
4204                 // Error check
4205                 core::map<u16, RemoteClient*>::Node *n;
4206                 n = m_clients.find(c.peer_id);
4207                 // The client shouldn't already exist
4208                 assert(n == NULL);
4209
4210                 // Create client
4211                 RemoteClient *client = new RemoteClient();
4212                 client->peer_id = c.peer_id;
4213                 m_clients.insert(client->peer_id, client);
4214
4215         } // PEER_ADDED
4216         else if(c.type == PEER_REMOVED)
4217         {
4218                 /*
4219                         Delete
4220                 */
4221
4222                 // Error check
4223                 core::map<u16, RemoteClient*>::Node *n;
4224                 n = m_clients.find(c.peer_id);
4225                 // The client should exist
4226                 assert(n != NULL);
4227
4228                 /*
4229                         Mark objects to be not known by the client
4230                 */
4231                 RemoteClient *client = n->getValue();
4232                 // Handle objects
4233                 for(core::map<u16, bool>::Iterator
4234                                 i = client->m_known_objects.getIterator();
4235                                 i.atEnd()==false; i++)
4236                 {
4237                         // Get object
4238                         u16 id = i.getNode()->getKey();
4239                         ServerActiveObject* obj = m_env.getActiveObject(id);
4240
4241                         if(obj && obj->m_known_by_count > 0)
4242                                 obj->m_known_by_count--;
4243                 }
4244
4245                 // Collect information about leaving in chat
4246                 std::wstring message;
4247                 {
4248                         std::wstring name = L"unknown";
4249                         Player *player = m_env.getPlayer(c.peer_id);
4250                         if(player != NULL)
4251                                 name = narrow_to_wide(player->getName());
4252
4253                         message += L"*** ";
4254                         message += name;
4255                         message += L" left game";
4256                         if(c.timeout)
4257                                 message += L" (timed out)";
4258                 }
4259
4260                 /*// Delete player
4261                 {
4262                         m_env.removePlayer(c.peer_id);
4263                 }*/
4264
4265                 // Set player client disconnected
4266                 {
4267                         Player *player = m_env.getPlayer(c.peer_id);
4268                         if(player != NULL)
4269                                 player->peer_id = 0;
4270                 }
4271
4272                 // Delete client
4273                 delete m_clients[c.peer_id];
4274                 m_clients.remove(c.peer_id);
4275
4276                 // Send player info to all remaining clients
4277                 SendPlayerInfos();
4278
4279                 // Send leave chat message to all remaining clients
4280                 BroadcastChatMessage(message);
4281
4282         } // PEER_REMOVED
4283         else
4284         {
4285                 assert(0);
4286         }
4287 }
4288
4289 void Server::handlePeerChanges()
4290 {
4291         while(m_peer_change_queue.size() > 0)
4292         {
4293                 PeerChange c = m_peer_change_queue.pop_front();
4294
4295                 dout_server<<"Server: Handling peer change: "
4296                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
4297                                 <<std::endl;
4298
4299                 handlePeerChange(c);
4300         }
4301 }
4302
4303 u64 Server::getPlayerPrivs(Player *player)
4304 {
4305         if(player==NULL)
4306                 return 0;
4307         std::string playername = player->getName();
4308         // Local player gets all privileges regardless of
4309         // what's set on their account.
4310         if(g_settings.get("name") == playername)
4311         {
4312                 return PRIV_ALL;
4313         }
4314         else
4315         {
4316                 return getPlayerAuthPrivs(playername);
4317         }
4318 }
4319
4320 void dedicated_server_loop(Server &server, bool &kill)
4321 {
4322         DSTACK(__FUNCTION_NAME);
4323
4324         dstream<<DTIME<<std::endl;
4325         dstream<<"========================"<<std::endl;
4326         dstream<<"Running dedicated server"<<std::endl;
4327         dstream<<"========================"<<std::endl;
4328         dstream<<std::endl;
4329
4330         IntervalLimiter m_profiler_interval;
4331
4332         for(;;)
4333         {
4334                 // This is kind of a hack but can be done like this
4335                 // because server.step() is very light
4336                 {
4337                         ScopeProfiler sp(&g_profiler, "dedicated server sleep");
4338                         sleep_ms(30);
4339                 }
4340                 server.step(0.030);
4341
4342                 if(server.getShutdownRequested() || kill)
4343                 {
4344                         dstream<<DTIME<<" dedicated_server_loop(): Quitting."<<std::endl;
4345                         break;
4346                 }
4347
4348                 /*
4349                         Profiler
4350                 */
4351                 float profiler_print_interval =
4352                                 g_settings.getFloat("profiler_print_interval");
4353                 if(profiler_print_interval != 0)
4354                 {
4355                         if(m_profiler_interval.step(0.030, profiler_print_interval))
4356                         {
4357                                 dstream<<"Profiler:"<<std::endl;
4358                                 g_profiler.print(dstream);
4359                                 g_profiler.clear();
4360                         }
4361                 }
4362
4363                 /*
4364                         Player info
4365                 */
4366                 static int counter = 0;
4367                 counter--;
4368                 if(counter <= 0)
4369                 {
4370                         counter = 10;
4371
4372                         core::list<PlayerInfo> list = server.getPlayerInfo();
4373                         core::list<PlayerInfo>::Iterator i;
4374                         static u32 sum_old = 0;
4375                         u32 sum = PIChecksum(list);
4376                         if(sum != sum_old)
4377                         {
4378                                 dstream<<DTIME<<"Player info:"<<std::endl;
4379                                 for(i=list.begin(); i!=list.end(); i++)
4380                                 {
4381                                         i->PrintLine(&dstream);
4382                                 }
4383                         }
4384                         sum_old = sum;
4385                 }
4386         }
4387 }
4388
4389