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                         Read and check network protocol version
1976                 */
1977
1978                 u16 net_proto_version = 0;
1979                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
1980                 {
1981                         net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
1982                 }
1983
1984                 getClient(peer->id)->net_proto_version = net_proto_version;
1985
1986                 if(net_proto_version == 0)
1987                 {
1988                         SendAccessDenied(m_con, peer_id,
1989                                         L"Your client is too old. Please upgrade.");
1990                         return;
1991                 }
1992
1993                 /*
1994                         Set up player
1995                 */
1996
1997                 // Get player name
1998                 char playername[PLAYERNAME_SIZE];
1999                 for(u32 i=0; i<PLAYERNAME_SIZE-1; i++)
2000                 {
2001                         playername[i] = data[3+i];
2002                 }
2003                 playername[PLAYERNAME_SIZE-1] = 0;
2004
2005                 if(playername[0]=='\0')
2006                 {
2007                         derr_server<<DTIME<<"Server: Player has empty name"<<std::endl;
2008                         SendAccessDenied(m_con, peer_id,
2009                                         L"Empty name");
2010                         return;
2011                 }
2012
2013                 if(string_allowed(playername, PLAYERNAME_ALLOWED_CHARS)==false)
2014                 {
2015                         derr_server<<DTIME<<"Server: Player has invalid name"<<std::endl;
2016                         SendAccessDenied(m_con, peer_id,
2017                                         L"Name contains unallowed characters");
2018                         return;
2019                 }
2020
2021                 // Get password
2022                 char password[PASSWORD_SIZE];
2023                 if(datasize >= 2+1+PLAYERNAME_SIZE)
2024                 {
2025                         // old version - assume blank password
2026                         password[0] = 0;
2027                 }
2028                 else
2029                 {
2030                                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2031                                 {
2032                                         password[i] = data[23+i];
2033                                 }
2034                                 password[PASSWORD_SIZE-1] = 0;
2035                 }
2036
2037                 std::string checkpwd;
2038                 if(m_authmanager.exists(playername))
2039                 {
2040                         checkpwd = m_authmanager.getPassword(playername);
2041                 }
2042                 else
2043                 {
2044                         checkpwd = g_settings.get("default_password");
2045                 }
2046
2047                 if(password != checkpwd && checkpwd != "")
2048                 {
2049                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2050                                         <<": supplied invalid password for "
2051                                         <<playername<<std::endl;
2052                         SendAccessDenied(m_con, peer_id, L"Invalid password");
2053                         return;
2054                 }
2055
2056                 // Add player to auth manager
2057                 if(m_authmanager.exists(playername) == false)
2058                 {
2059                         derr_server<<DTIME<<"Server: adding player "<<playername
2060                                         <<" to auth manager"<<std::endl;
2061                         m_authmanager.add(playername);
2062                         m_authmanager.setPassword(playername, checkpwd);
2063                         m_authmanager.setPrivs(playername,
2064                                         stringToPrivs(g_settings.get("default_privs")));
2065                         m_authmanager.save();
2066                 }
2067
2068                 // Get player
2069                 Player *player = emergePlayer(playername, password, peer_id);
2070
2071
2072                 /*{
2073                         // DEBUG: Test serialization
2074                         std::ostringstream test_os;
2075                         player->serialize(test_os);
2076                         dstream<<"Player serialization test: \""<<test_os.str()
2077                                         <<"\""<<std::endl;
2078                         std::istringstream test_is(test_os.str());
2079                         player->deSerialize(test_is);
2080                 }*/
2081
2082                 // If failed, cancel
2083                 if(player == NULL)
2084                 {
2085                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2086                                         <<": failed to emerge player"<<std::endl;
2087                         return;
2088                 }
2089
2090                 /*
2091                 // If a client is already connected to the player, cancel
2092                 if(player->peer_id != 0)
2093                 {
2094                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2095                                         <<" tried to connect to "
2096                                         "an already connected player (peer_id="
2097                                         <<player->peer_id<<")"<<std::endl;
2098                         return;
2099                 }
2100                 // Set client of player
2101                 player->peer_id = peer_id;
2102                 */
2103
2104                 // Check if player doesn't exist
2105                 if(player == NULL)
2106                         throw con::InvalidIncomingDataException
2107                                 ("Server::ProcessData(): INIT: Player doesn't exist");
2108
2109                 /*// update name if it was supplied
2110                 if(datasize >= 20+3)
2111                 {
2112                         data[20+3-1] = 0;
2113                         player->updateName((const char*)&data[3]);
2114                 }*/
2115
2116                 /*
2117                         Answer with a TOCLIENT_INIT
2118                 */
2119                 {
2120                         SharedBuffer<u8> reply(2+1+6+8);
2121                         writeU16(&reply[0], TOCLIENT_INIT);
2122                         writeU8(&reply[2], deployed);
2123                         writeV3S16(&reply[2+1], floatToInt(player->getPosition()+v3f(0,BS/2,0), BS));
2124                         writeU64(&reply[2+1+6], m_env.getServerMap().getSeed());
2125
2126                         // Send as reliable
2127                         m_con.Send(peer_id, 0, reply, true);
2128                 }
2129
2130                 /*
2131                         Send complete position information
2132                 */
2133                 SendMovePlayer(player);
2134
2135                 return;
2136         }
2137
2138         if(command == TOSERVER_INIT2)
2139         {
2140                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT2 from "
2141                                 <<peer->id<<std::endl;
2142
2143
2144                 getClient(peer->id)->serialization_version
2145                                 = getClient(peer->id)->pending_serialization_version;
2146
2147                 /*
2148                         Send some initialization data
2149                 */
2150
2151                 // Send player info to all players
2152                 SendPlayerInfos();
2153
2154                 // Send inventory to player
2155                 UpdateCrafting(peer->id);
2156                 SendInventory(peer->id);
2157
2158                 // Send HP
2159                 {
2160                         Player *player = m_env.getPlayer(peer_id);
2161                         SendPlayerHP(player);
2162                 }
2163
2164                 // Send time of day
2165                 {
2166                         SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
2167                                         m_env.getTimeOfDay());
2168                         m_con.Send(peer->id, 0, data, true);
2169                 }
2170
2171                 // Send information about server to player in chat
2172                 SendChatMessage(peer_id, getStatusString());
2173
2174                 // Send information about joining in chat
2175                 {
2176                         std::wstring name = L"unknown";
2177                         Player *player = m_env.getPlayer(peer_id);
2178                         if(player != NULL)
2179                                 name = narrow_to_wide(player->getName());
2180
2181                         std::wstring message;
2182                         message += L"*** ";
2183                         message += name;
2184                         message += L" joined game";
2185                         BroadcastChatMessage(message);
2186                 }
2187
2188                 // Warnings about protocol version can be issued here
2189                 /*if(getClient(peer->id)->net_proto_version == 0)
2190                 {
2191                         SendChatMessage(peer_id, L"# Server: NOTE: YOUR CLIENT IS OLD AND DOES NOT WORK PROPERLY WITH THIS SERVER");
2192                 }*/
2193
2194                 return;
2195         }
2196
2197         if(peer_ser_ver == SER_FMT_VER_INVALID)
2198         {
2199                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: Peer"
2200                                 " serialization format invalid or not initialized."
2201                                 " Skipping incoming command="<<command<<std::endl;
2202                 return;
2203         }
2204
2205         Player *player = m_env.getPlayer(peer_id);
2206
2207         if(player == NULL){
2208                 derr_server<<"Server::ProcessData(): Cancelling: "
2209                                 "No player for peer_id="<<peer_id
2210                                 <<std::endl;
2211                 return;
2212         }
2213         if(command == TOSERVER_PLAYERPOS)
2214         {
2215                 if(datasize < 2+12+12+4+4)
2216                         return;
2217
2218                 u32 start = 0;
2219                 v3s32 ps = readV3S32(&data[start+2]);
2220                 v3s32 ss = readV3S32(&data[start+2+12]);
2221                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
2222                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
2223                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
2224                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
2225                 pitch = wrapDegrees(pitch);
2226                 yaw = wrapDegrees(yaw);
2227                 player->setPosition(position);
2228                 player->setSpeed(speed);
2229                 player->setPitch(pitch);
2230                 player->setYaw(yaw);
2231
2232                 /*dout_server<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
2233                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
2234                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
2235         }
2236         else if(command == TOSERVER_GOTBLOCKS)
2237         {
2238                 if(datasize < 2+1)
2239                         return;
2240
2241                 /*
2242                         [0] u16 command
2243                         [2] u8 count
2244                         [3] v3s16 pos_0
2245                         [3+6] v3s16 pos_1
2246                         ...
2247                 */
2248
2249                 u16 count = data[2];
2250                 for(u16 i=0; i<count; i++)
2251                 {
2252                         if((s16)datasize < 2+1+(i+1)*6)
2253                                 throw con::InvalidIncomingDataException
2254                                         ("GOTBLOCKS length is too short");
2255                         v3s16 p = readV3S16(&data[2+1+i*6]);
2256                         /*dstream<<"Server: GOTBLOCKS ("
2257                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2258                         RemoteClient *client = getClient(peer_id);
2259                         client->GotBlock(p);
2260                 }
2261         }
2262         else if(command == TOSERVER_DELETEDBLOCKS)
2263         {
2264                 if(datasize < 2+1)
2265                         return;
2266
2267                 /*
2268                         [0] u16 command
2269                         [2] u8 count
2270                         [3] v3s16 pos_0
2271                         [3+6] v3s16 pos_1
2272                         ...
2273                 */
2274
2275                 u16 count = data[2];
2276                 for(u16 i=0; i<count; i++)
2277                 {
2278                         if((s16)datasize < 2+1+(i+1)*6)
2279                                 throw con::InvalidIncomingDataException
2280                                         ("DELETEDBLOCKS length is too short");
2281                         v3s16 p = readV3S16(&data[2+1+i*6]);
2282                         /*dstream<<"Server: DELETEDBLOCKS ("
2283                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2284                         RemoteClient *client = getClient(peer_id);
2285                         client->SetBlockNotSent(p);
2286                 }
2287         }
2288         else if(command == TOSERVER_CLICK_OBJECT)
2289         {
2290                 if(datasize < 13)
2291                         return;
2292
2293                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2294                         return;
2295
2296                 /*
2297                         [0] u16 command
2298                         [2] u8 button (0=left, 1=right)
2299                         [3] v3s16 block
2300                         [9] s16 id
2301                         [11] u16 item
2302                 */
2303                 u8 button = readU8(&data[2]);
2304                 v3s16 p;
2305                 p.X = readS16(&data[3]);
2306                 p.Y = readS16(&data[5]);
2307                 p.Z = readS16(&data[7]);
2308                 s16 id = readS16(&data[9]);
2309                 //u16 item_i = readU16(&data[11]);
2310
2311                 MapBlock *block = NULL;
2312                 try
2313                 {
2314                         block = m_env.getMap().getBlockNoCreate(p);
2315                 }
2316                 catch(InvalidPositionException &e)
2317                 {
2318                         derr_server<<"CLICK_OBJECT block not found"<<std::endl;
2319                         return;
2320                 }
2321
2322                 MapBlockObject *obj = block->getObject(id);
2323
2324                 if(obj == NULL)
2325                 {
2326                         derr_server<<"CLICK_OBJECT object not found"<<std::endl;
2327                         return;
2328                 }
2329
2330                 //TODO: Check that object is reasonably close
2331
2332                 // Left click
2333                 if(button == 0)
2334                 {
2335                         InventoryList *ilist = player->inventory.getList("main");
2336                         if(g_settings.getBool("creative_mode") == false && ilist != NULL)
2337                         {
2338
2339                                 // Skip if inventory has no free space
2340                                 if(ilist->getUsedSlots() == ilist->getSize())
2341                                 {
2342                                         dout_server<<"Player inventory has no free space"<<std::endl;
2343                                         return;
2344                                 }
2345
2346                                 /*
2347                                         Create the inventory item
2348                                 */
2349                                 InventoryItem *item = NULL;
2350                                 // If it is an item-object, take the item from it
2351                                 if(obj->getTypeId() == MAPBLOCKOBJECT_TYPE_ITEM)
2352                                 {
2353                                         item = ((ItemObject*)obj)->createInventoryItem();
2354                                 }
2355                                 // Else create an item of the object
2356                                 else
2357                                 {
2358                                         item = new MapBlockObjectItem
2359                                                         (obj->getInventoryString());
2360                                 }
2361
2362                                 // Add to inventory and send inventory
2363                                 ilist->addItem(item);
2364                                 UpdateCrafting(player->peer_id);
2365                                 SendInventory(player->peer_id);
2366                         }
2367
2368                         // Remove from block
2369                         block->removeObject(id);
2370                 }
2371         }
2372         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
2373         {
2374                 if(datasize < 7)
2375                         return;
2376
2377                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2378                         return;
2379
2380                 /*
2381                         length: 7
2382                         [0] u16 command
2383                         [2] u8 button (0=left, 1=right)
2384                         [3] u16 id
2385                         [5] u16 item
2386                 */
2387                 u8 button = readU8(&data[2]);
2388                 u16 id = readS16(&data[3]);
2389                 u16 item_i = readU16(&data[11]);
2390
2391                 ServerActiveObject *obj = m_env.getActiveObject(id);
2392
2393                 if(obj == NULL)
2394                 {
2395                         derr_server<<"Server: CLICK_ACTIVEOBJECT: object not found"
2396                                         <<std::endl;
2397                         return;
2398                 }
2399
2400                 // Skip if object has been removed
2401                 if(obj->m_removed)
2402                         return;
2403
2404                 //TODO: Check that object is reasonably close
2405
2406                 // Left click, pick object up (usually)
2407                 if(button == 0)
2408                 {
2409                         /*
2410                                 Try creating inventory item
2411                         */
2412                         InventoryItem *item = obj->createPickedUpItem();
2413
2414                         if(item)
2415                         {
2416                                 InventoryList *ilist = player->inventory.getList("main");
2417                                 if(ilist != NULL)
2418                                 {
2419                                         if(g_settings.getBool("creative_mode") == false)
2420                                         {
2421                                                 // Skip if inventory has no free space
2422                                                 if(ilist->getUsedSlots() == ilist->getSize())
2423                                                 {
2424                                                         dout_server<<"Player inventory has no free space"<<std::endl;
2425                                                         return;
2426                                                 }
2427
2428                                                 // Add to inventory and send inventory
2429                                                 ilist->addItem(item);
2430                                                 UpdateCrafting(player->peer_id);
2431                                                 SendInventory(player->peer_id);
2432                                         }
2433
2434                                         // Remove object from environment
2435                                         obj->m_removed = true;
2436                                 }
2437                         }
2438                         else
2439                         {
2440                                 /*
2441                                         Item cannot be picked up. Punch it instead.
2442                                 */
2443
2444                                 ToolItem *titem = NULL;
2445                                 std::string toolname = "";
2446
2447                                 InventoryList *mlist = player->inventory.getList("main");
2448                                 if(mlist != NULL)
2449                                 {
2450                                         InventoryItem *item = mlist->getItem(item_i);
2451                                         if(item && (std::string)item->getName() == "ToolItem")
2452                                         {
2453                                                 titem = (ToolItem*)item;
2454                                                 toolname = titem->getToolName();
2455                                         }
2456                                 }
2457
2458                                 v3f playerpos = player->getPosition();
2459                                 v3f objpos = obj->getBasePosition();
2460                                 v3f dir = (objpos - playerpos).normalize();
2461
2462                                 u16 wear = obj->punch(toolname, dir);
2463
2464                                 if(titem)
2465                                 {
2466                                         bool weared_out = titem->addWear(wear);
2467                                         if(weared_out)
2468                                                 mlist->deleteItem(item_i);
2469                                         SendInventory(player->peer_id);
2470                                 }
2471                         }
2472                 }
2473                 // Right click, do something with object
2474                 if(button == 1)
2475                 {
2476                         // Track hp changes super-crappily
2477                         u16 oldhp = player->hp;
2478
2479                         // Do stuff
2480                         obj->rightClick(player);
2481
2482                         // Send back stuff
2483                         if(player->hp != oldhp)
2484                         {
2485                                 SendPlayerHP(player);
2486                         }
2487                 }
2488         }
2489         else if(command == TOSERVER_GROUND_ACTION)
2490         {
2491                 if(datasize < 17)
2492                         return;
2493                 /*
2494                         length: 17
2495                         [0] u16 command
2496                         [2] u8 action
2497                         [3] v3s16 nodepos_undersurface
2498                         [9] v3s16 nodepos_abovesurface
2499                         [15] u16 item
2500                         actions:
2501                         0: start digging
2502                         1: place block
2503                         2: stop digging (all parameters ignored)
2504                         3: digging completed
2505                 */
2506                 u8 action = readU8(&data[2]);
2507                 v3s16 p_under;
2508                 p_under.X = readS16(&data[3]);
2509                 p_under.Y = readS16(&data[5]);
2510                 p_under.Z = readS16(&data[7]);
2511                 v3s16 p_over;
2512                 p_over.X = readS16(&data[9]);
2513                 p_over.Y = readS16(&data[11]);
2514                 p_over.Z = readS16(&data[13]);
2515                 u16 item_i = readU16(&data[15]);
2516
2517                 //TODO: Check that target is reasonably close
2518
2519                 /*
2520                         0: start digging
2521                 */
2522                 if(action == 0)
2523                 {
2524                         /*
2525                                 NOTE: This can be used in the future to check if
2526                                 somebody is cheating, by checking the timing.
2527                         */
2528                 } // action == 0
2529
2530                 /*
2531                         2: stop digging
2532                 */
2533                 else if(action == 2)
2534                 {
2535 #if 0
2536                         RemoteClient *client = getClient(peer->id);
2537                         JMutexAutoLock digmutex(client->m_dig_mutex);
2538                         client->m_dig_tool_item = -1;
2539 #endif
2540                 }
2541
2542                 /*
2543                         3: Digging completed
2544                 */
2545                 else if(action == 3)
2546                 {
2547                         // Mandatory parameter; actually used for nothing
2548                         core::map<v3s16, MapBlock*> modified_blocks;
2549
2550                         content_t material = CONTENT_IGNORE;
2551                         u8 mineral = MINERAL_NONE;
2552
2553                         bool cannot_remove_node = false;
2554
2555                         try
2556                         {
2557                                 MapNode n = m_env.getMap().getNode(p_under);
2558                                 // Get mineral
2559                                 mineral = n.getMineral();
2560                                 // Get material at position
2561                                 material = n.getContent();
2562                                 // If not yet cancelled
2563                                 if(cannot_remove_node == false)
2564                                 {
2565                                         // If it's not diggable, do nothing
2566                                         if(content_diggable(material) == false)
2567                                         {
2568                                                 derr_server<<"Server: Not finishing digging: "
2569                                                                 <<"Node not diggable"
2570                                                                 <<std::endl;
2571                                                 cannot_remove_node = true;
2572                                         }
2573                                 }
2574                                 // If not yet cancelled
2575                                 if(cannot_remove_node == false)
2576                                 {
2577                                         // Get node metadata
2578                                         NodeMetadata *meta = m_env.getMap().getNodeMetadata(p_under);
2579                                         if(meta && meta->nodeRemovalDisabled() == true)
2580                                         {
2581                                                 derr_server<<"Server: Not finishing digging: "
2582                                                                 <<"Node metadata disables removal"
2583                                                                 <<std::endl;
2584                                                 cannot_remove_node = true;
2585                                         }
2586                                 }
2587                         }
2588                         catch(InvalidPositionException &e)
2589                         {
2590                                 derr_server<<"Server: Not finishing digging: Node not found."
2591                                                 <<" Adding block to emerge queue."
2592                                                 <<std::endl;
2593                                 m_emerge_queue.addBlock(peer_id,
2594                                                 getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2595                                 cannot_remove_node = true;
2596                         }
2597
2598                         // Make sure the player is allowed to do it
2599                         if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2600                         {
2601                                 dstream<<"Player "<<player->getName()<<" cannot remove node"
2602                                                 <<" because privileges are "<<getPlayerPrivs(player)
2603                                                 <<std::endl;
2604                                 cannot_remove_node = true;
2605                         }
2606
2607                         /*
2608                                 If node can't be removed, set block to be re-sent to
2609                                 client and quit.
2610                         */
2611                         if(cannot_remove_node)
2612                         {
2613                                 derr_server<<"Server: Not finishing digging."<<std::endl;
2614
2615                                 // Client probably has wrong data.
2616                                 // Set block not sent, so that client will get
2617                                 // a valid one.
2618                                 dstream<<"Client "<<peer_id<<" tried to dig "
2619                                                 <<"node; but node cannot be removed."
2620                                                 <<" setting MapBlock not sent."<<std::endl;
2621                                 RemoteClient *client = getClient(peer_id);
2622                                 v3s16 blockpos = getNodeBlockPos(p_under);
2623                                 client->SetBlockNotSent(blockpos);
2624
2625                                 return;
2626                         }
2627
2628                         /*
2629                                 Send the removal to all close-by players.
2630                                 - If other player is close, send REMOVENODE
2631                                 - Otherwise set blocks not sent
2632                         */
2633                         core::list<u16> far_players;
2634                         sendRemoveNode(p_under, peer_id, &far_players, 30);
2635
2636                         /*
2637                                 Update and send inventory
2638                         */
2639
2640                         if(g_settings.getBool("creative_mode") == false)
2641                         {
2642                                 /*
2643                                         Wear out tool
2644                                 */
2645                                 InventoryList *mlist = player->inventory.getList("main");
2646                                 if(mlist != NULL)
2647                                 {
2648                                         InventoryItem *item = mlist->getItem(item_i);
2649                                         if(item && (std::string)item->getName() == "ToolItem")
2650                                         {
2651                                                 ToolItem *titem = (ToolItem*)item;
2652                                                 std::string toolname = titem->getToolName();
2653
2654                                                 // Get digging properties for material and tool
2655                                                 DiggingProperties prop =
2656                                                                 getDiggingProperties(material, toolname);
2657
2658                                                 if(prop.diggable == false)
2659                                                 {
2660                                                         derr_server<<"Server: WARNING: Player digged"
2661                                                                         <<" with impossible material + tool"
2662                                                                         <<" combination"<<std::endl;
2663                                                 }
2664
2665                                                 bool weared_out = titem->addWear(prop.wear);
2666
2667                                                 if(weared_out)
2668                                                 {
2669                                                         mlist->deleteItem(item_i);
2670                                                 }
2671                                         }
2672                                 }
2673
2674                                 /*
2675                                         Add dug item to inventory
2676                                 */
2677
2678                                 InventoryItem *item = NULL;
2679
2680                                 if(mineral != MINERAL_NONE)
2681                                         item = getDiggedMineralItem(mineral);
2682
2683                                 // If not mineral
2684                                 if(item == NULL)
2685                                 {
2686                                         std::string &dug_s = content_features(material).dug_item;
2687                                         if(dug_s != "")
2688                                         {
2689                                                 std::istringstream is(dug_s, std::ios::binary);
2690                                                 item = InventoryItem::deSerialize(is);
2691                                         }
2692                                 }
2693
2694                                 if(item != NULL)
2695                                 {
2696                                         // Add a item to inventory
2697                                         player->inventory.addItem("main", item);
2698
2699                                         // Send inventory
2700                                         UpdateCrafting(player->peer_id);
2701                                         SendInventory(player->peer_id);
2702                                 }
2703                         }
2704
2705                         /*
2706                                 Remove the node
2707                                 (this takes some time so it is done after the quick stuff)
2708                         */
2709                         {
2710                                 MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2711
2712                                 m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
2713                         }
2714                         /*
2715                                 Set blocks not sent to far players
2716                         */
2717                         for(core::list<u16>::Iterator
2718                                         i = far_players.begin();
2719                                         i != far_players.end(); i++)
2720                         {
2721                                 u16 peer_id = *i;
2722                                 RemoteClient *client = getClient(peer_id);
2723                                 if(client==NULL)
2724                                         continue;
2725                                 client->SetBlocksNotSent(modified_blocks);
2726                         }
2727                 }
2728
2729                 /*
2730                         1: place block
2731                 */
2732                 else if(action == 1)
2733                 {
2734
2735                         InventoryList *ilist = player->inventory.getList("main");
2736                         if(ilist == NULL)
2737                                 return;
2738
2739                         // Get item
2740                         InventoryItem *item = ilist->getItem(item_i);
2741
2742                         // If there is no item, it is not possible to add it anywhere
2743                         if(item == NULL)
2744                                 return;
2745
2746                         /*
2747                                 Handle material items
2748                         */
2749                         if(std::string("MaterialItem") == item->getName())
2750                         {
2751                                 try{
2752                                         // Don't add a node if this is not a free space
2753                                         MapNode n2 = m_env.getMap().getNode(p_over);
2754                                         bool no_enough_privs =
2755                                                         ((getPlayerPrivs(player) & PRIV_BUILD)==0);
2756                                         if(no_enough_privs)
2757                                                 dstream<<"Player "<<player->getName()<<" cannot add node"
2758                                                         <<" because privileges are "<<getPlayerPrivs(player)
2759                                                         <<std::endl;
2760
2761                                         if(content_features(n2).buildable_to == false
2762                                                 || no_enough_privs)
2763                                         {
2764                                                 // Client probably has wrong data.
2765                                                 // Set block not sent, so that client will get
2766                                                 // a valid one.
2767                                                 dstream<<"Client "<<peer_id<<" tried to place"
2768                                                                 <<" node in invalid position; setting"
2769                                                                 <<" MapBlock not sent."<<std::endl;
2770                                                 RemoteClient *client = getClient(peer_id);
2771                                                 v3s16 blockpos = getNodeBlockPos(p_over);
2772                                                 client->SetBlockNotSent(blockpos);
2773                                                 return;
2774                                         }
2775                                 }
2776                                 catch(InvalidPositionException &e)
2777                                 {
2778                                         derr_server<<"Server: Ignoring ADDNODE: Node not found"
2779                                                         <<" Adding block to emerge queue."
2780                                                         <<std::endl;
2781                                         m_emerge_queue.addBlock(peer_id,
2782                                                         getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2783                                         return;
2784                                 }
2785
2786                                 // Reset build time counter
2787                                 getClient(peer->id)->m_time_from_building = 0.0;
2788
2789                                 // Create node data
2790                                 MaterialItem *mitem = (MaterialItem*)item;
2791                                 MapNode n;
2792                                 n.setContent(mitem->getMaterial());
2793
2794                                 // Calculate direction for wall mounted stuff
2795                                 if(content_features(n).wall_mounted)
2796                                         n.param2 = packDir(p_under - p_over);
2797
2798                                 // Calculate the direction for furnaces and chests and stuff
2799                                 if(content_features(n).param_type == CPT_FACEDIR_SIMPLE)
2800                                 {
2801                                         v3f playerpos = player->getPosition();
2802                                         v3f blockpos = intToFloat(p_over, BS) - playerpos;
2803                                         blockpos = blockpos.normalize();
2804                                         n.param1 = 0;
2805                                         if (fabs(blockpos.X) > fabs(blockpos.Z)) {
2806                                                 if (blockpos.X < 0)
2807                                                         n.param1 = 3;
2808                                                 else
2809                                                         n.param1 = 1;
2810                                         } else {
2811                                                 if (blockpos.Z < 0)
2812                                                         n.param1 = 2;
2813                                                 else
2814                                                         n.param1 = 0;
2815                                         }
2816                                 }
2817
2818                                 /*
2819                                         Send to all close-by players
2820                                 */
2821                                 core::list<u16> far_players;
2822                                 sendAddNode(p_over, n, 0, &far_players, 30);
2823
2824                                 /*
2825                                         Handle inventory
2826                                 */
2827                                 InventoryList *ilist = player->inventory.getList("main");
2828                                 if(g_settings.getBool("creative_mode") == false && ilist)
2829                                 {
2830                                         // Remove from inventory and send inventory
2831                                         if(mitem->getCount() == 1)
2832                                                 ilist->deleteItem(item_i);
2833                                         else
2834                                                 mitem->remove(1);
2835                                         // Send inventory
2836                                         UpdateCrafting(peer_id);
2837                                         SendInventory(peer_id);
2838                                 }
2839
2840                                 /*
2841                                         Add node.
2842
2843                                         This takes some time so it is done after the quick stuff
2844                                 */
2845                                 core::map<v3s16, MapBlock*> modified_blocks;
2846                                 {
2847                                         MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2848
2849                                         m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
2850                                 }
2851                                 /*
2852                                         Set blocks not sent to far players
2853                                 */
2854                                 for(core::list<u16>::Iterator
2855                                                 i = far_players.begin();
2856                                                 i != far_players.end(); i++)
2857                                 {
2858                                         u16 peer_id = *i;
2859                                         RemoteClient *client = getClient(peer_id);
2860                                         if(client==NULL)
2861                                                 continue;
2862                                         client->SetBlocksNotSent(modified_blocks);
2863                                 }
2864
2865                                 /*
2866                                         Calculate special events
2867                                 */
2868
2869                                 /*if(n.d == CONTENT_MESE)
2870                                 {
2871                                         u32 count = 0;
2872                                         for(s16 z=-1; z<=1; z++)
2873                                         for(s16 y=-1; y<=1; y++)
2874                                         for(s16 x=-1; x<=1; x++)
2875                                         {
2876
2877                                         }
2878                                 }*/
2879                         }
2880                         /*
2881                                 Place other item (not a block)
2882                         */
2883                         else
2884                         {
2885                                 v3s16 blockpos = getNodeBlockPos(p_over);
2886
2887                                 /*
2888                                         Check that the block is loaded so that the item
2889                                         can properly be added to the static list too
2890                                 */
2891                                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
2892                                 if(block==NULL)
2893                                 {
2894                                         derr_server<<"Error while placing object: "
2895                                                         "block not found"<<std::endl;
2896                                         return;
2897                                 }
2898
2899                                 dout_server<<"Placing a miscellaneous item on map"
2900                                                 <<std::endl;
2901
2902                                 // Calculate a position for it
2903                                 v3f pos = intToFloat(p_over, BS);
2904                                 //pos.Y -= BS*0.45;
2905                                 pos.Y -= BS*0.25; // let it drop a bit
2906                                 // Randomize a bit
2907                                 pos.X += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2908                                 pos.Z += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2909
2910                                 /*
2911                                         Create the object
2912                                 */
2913                                 ServerActiveObject *obj = item->createSAO(&m_env, 0, pos);
2914
2915                                 if(obj == NULL)
2916                                 {
2917                                         derr_server<<"WARNING: item resulted in NULL object, "
2918                                                         <<"not placing onto map"
2919                                                         <<std::endl;
2920                                 }
2921                                 else
2922                                 {
2923                                         // Add the object to the environment
2924                                         m_env.addActiveObject(obj);
2925
2926                                         dout_server<<"Placed object"<<std::endl;
2927
2928                                         if(g_settings.getBool("creative_mode") == false)
2929                                         {
2930                                                 // Delete the right amount of items from the slot
2931                                                 u16 dropcount = item->getDropCount();
2932
2933                                                 // Delete item if all gone
2934                                                 if(item->getCount() <= dropcount)
2935                                                 {
2936                                                         if(item->getCount() < dropcount)
2937                                                                 dstream<<"WARNING: Server: dropped more items"
2938                                                                                 <<" than the slot contains"<<std::endl;
2939
2940                                                         InventoryList *ilist = player->inventory.getList("main");
2941                                                         if(ilist)
2942                                                                 // Remove from inventory and send inventory
2943                                                                 ilist->deleteItem(item_i);
2944                                                 }
2945                                                 // Else decrement it
2946                                                 else
2947                                                         item->remove(dropcount);
2948
2949                                                 // Send inventory
2950                                                 UpdateCrafting(peer_id);
2951                                                 SendInventory(peer_id);
2952                                         }
2953                                 }
2954                         }
2955
2956                 } // action == 1
2957
2958                 /*
2959                         Catch invalid actions
2960                 */
2961                 else
2962                 {
2963                         derr_server<<"WARNING: Server: Invalid action "
2964                                         <<action<<std::endl;
2965                 }
2966         }
2967 #if 0
2968         else if(command == TOSERVER_RELEASE)
2969         {
2970                 if(datasize < 3)
2971                         return;
2972                 /*
2973                         length: 3
2974                         [0] u16 command
2975                         [2] u8 button
2976                 */
2977                 dstream<<"TOSERVER_RELEASE ignored"<<std::endl;
2978         }
2979 #endif
2980         else if(command == TOSERVER_SIGNTEXT)
2981         {
2982                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2983                         return;
2984                 /*
2985                         u16 command
2986                         v3s16 blockpos
2987                         s16 id
2988                         u16 textlen
2989                         textdata
2990                 */
2991                 std::string datastring((char*)&data[2], datasize-2);
2992                 std::istringstream is(datastring, std::ios_base::binary);
2993                 u8 buf[6];
2994                 // Read stuff
2995                 is.read((char*)buf, 6);
2996                 v3s16 blockpos = readV3S16(buf);
2997                 is.read((char*)buf, 2);
2998                 s16 id = readS16(buf);
2999                 is.read((char*)buf, 2);
3000                 u16 textlen = readU16(buf);
3001                 std::string text;
3002                 for(u16 i=0; i<textlen; i++)
3003                 {
3004                         is.read((char*)buf, 1);
3005                         text += (char)buf[0];
3006                 }
3007
3008                 MapBlock *block = NULL;
3009                 try
3010                 {
3011                         block = m_env.getMap().getBlockNoCreate(blockpos);
3012                 }
3013                 catch(InvalidPositionException &e)
3014                 {
3015                         derr_server<<"Error while setting sign text: "
3016                                         "block not found"<<std::endl;
3017                         return;
3018                 }
3019
3020                 MapBlockObject *obj = block->getObject(id);
3021                 if(obj == NULL)
3022                 {
3023                         derr_server<<"Error while setting sign text: "
3024                                         "object not found"<<std::endl;
3025                         return;
3026                 }
3027
3028                 if(obj->getTypeId() != MAPBLOCKOBJECT_TYPE_SIGN)
3029                 {
3030                         derr_server<<"Error while setting sign text: "
3031                                         "object is not a sign"<<std::endl;
3032                         return;
3033                 }
3034
3035                 ((SignObject*)obj)->setText(text);
3036
3037                 obj->getBlock()->setChangedFlag();
3038         }
3039         else if(command == TOSERVER_SIGNNODETEXT)
3040         {
3041                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3042                         return;
3043                 /*
3044                         u16 command
3045                         v3s16 p
3046                         u16 textlen
3047                         textdata
3048                 */
3049                 std::string datastring((char*)&data[2], datasize-2);
3050                 std::istringstream is(datastring, std::ios_base::binary);
3051                 u8 buf[6];
3052                 // Read stuff
3053                 is.read((char*)buf, 6);
3054                 v3s16 p = readV3S16(buf);
3055                 is.read((char*)buf, 2);
3056                 u16 textlen = readU16(buf);
3057                 std::string text;
3058                 for(u16 i=0; i<textlen; i++)
3059                 {
3060                         is.read((char*)buf, 1);
3061                         text += (char)buf[0];
3062                 }
3063
3064                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3065                 if(!meta)
3066                         return;
3067                 if(meta->typeId() != CONTENT_SIGN_WALL)
3068                         return;
3069                 SignNodeMetadata *signmeta = (SignNodeMetadata*)meta;
3070                 signmeta->setText(text);
3071
3072                 v3s16 blockpos = getNodeBlockPos(p);
3073                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
3074                 if(block)
3075                 {
3076                         block->setChangedFlag();
3077                 }
3078
3079                 for(core::map<u16, RemoteClient*>::Iterator
3080                         i = m_clients.getIterator();
3081                         i.atEnd()==false; i++)
3082                 {
3083                         RemoteClient *client = i.getNode()->getValue();
3084                         client->SetBlockNotSent(blockpos);
3085                 }
3086         }
3087         else if(command == TOSERVER_INVENTORY_ACTION)
3088         {
3089                 /*// Ignore inventory changes if in creative mode
3090                 if(g_settings.getBool("creative_mode") == true)
3091                 {
3092                         dstream<<"TOSERVER_INVENTORY_ACTION: ignoring in creative mode"
3093                                         <<std::endl;
3094                         return;
3095                 }*/
3096                 // Strip command and create a stream
3097                 std::string datastring((char*)&data[2], datasize-2);
3098                 dstream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
3099                 std::istringstream is(datastring, std::ios_base::binary);
3100                 // Create an action
3101                 InventoryAction *a = InventoryAction::deSerialize(is);
3102                 if(a != NULL)
3103                 {
3104                         // Create context
3105                         InventoryContext c;
3106                         c.current_player = player;
3107
3108                         /*
3109                                 Handle craftresult specially if not in creative mode
3110                         */
3111                         bool disable_action = false;
3112                         if(a->getType() == IACTION_MOVE
3113                                         && g_settings.getBool("creative_mode") == false)
3114                         {
3115                                 IMoveAction *ma = (IMoveAction*)a;
3116                                 if(ma->to_inv == "current_player" &&
3117                                                 ma->from_inv == "current_player")
3118                                 {
3119                                         InventoryList *rlist = player->inventory.getList("craftresult");
3120                                         assert(rlist);
3121                                         InventoryList *clist = player->inventory.getList("craft");
3122                                         assert(clist);
3123                                         InventoryList *mlist = player->inventory.getList("main");
3124                                         assert(mlist);
3125                                         /*
3126                                                 Craftresult is no longer preview if something
3127                                                 is moved into it
3128                                         */
3129                                         if(ma->to_list == "craftresult"
3130                                                         && ma->from_list != "craftresult")
3131                                         {
3132                                                 // If it currently is a preview, remove
3133                                                 // its contents
3134                                                 if(player->craftresult_is_preview)
3135                                                 {
3136                                                         rlist->deleteItem(0);
3137                                                 }
3138                                                 player->craftresult_is_preview = false;
3139                                         }
3140                                         /*
3141                                                 Crafting takes place if this condition is true.
3142                                         */
3143                                         if(player->craftresult_is_preview &&
3144                                                         ma->from_list == "craftresult")
3145                                         {
3146                                                 player->craftresult_is_preview = false;
3147                                                 clist->decrementMaterials(1);
3148                                         }
3149                                         /*
3150                                                 If the craftresult is placed on itself, move it to
3151                                                 main inventory instead of doing the action
3152                                         */
3153                                         if(ma->to_list == "craftresult"
3154                                                         && ma->from_list == "craftresult")
3155                                         {
3156                                                 disable_action = true;
3157
3158                                                 InventoryItem *item1 = rlist->changeItem(0, NULL);
3159                                                 mlist->addItem(item1);
3160                                         }
3161                                 }
3162                         }
3163
3164                         if(disable_action == false)
3165                         {
3166                                 // Feed action to player inventory
3167                                 a->apply(&c, this);
3168                                 // Eat the action
3169                                 delete a;
3170                         }
3171                         else
3172                         {
3173                                 // Send inventory
3174                                 UpdateCrafting(player->peer_id);
3175                                 SendInventory(player->peer_id);
3176                         }
3177                 }
3178                 else
3179                 {
3180                         dstream<<"TOSERVER_INVENTORY_ACTION: "
3181                                         <<"InventoryAction::deSerialize() returned NULL"
3182                                         <<std::endl;
3183                 }
3184         }
3185         else if(command == TOSERVER_CHAT_MESSAGE)
3186         {
3187                 /*
3188                         u16 command
3189                         u16 length
3190                         wstring message
3191                 */
3192                 u8 buf[6];
3193                 std::string datastring((char*)&data[2], datasize-2);
3194                 std::istringstream is(datastring, std::ios_base::binary);
3195
3196                 // Read stuff
3197                 is.read((char*)buf, 2);
3198                 u16 len = readU16(buf);
3199
3200                 std::wstring message;
3201                 for(u16 i=0; i<len; i++)
3202                 {
3203                         is.read((char*)buf, 2);
3204                         message += (wchar_t)readU16(buf);
3205                 }
3206
3207                 // Get player name of this client
3208                 std::wstring name = narrow_to_wide(player->getName());
3209
3210                 // Line to send to players
3211                 std::wstring line;
3212                 // Whether to send to the player that sent the line
3213                 bool send_to_sender = false;
3214                 // Whether to send to other players
3215                 bool send_to_others = false;
3216
3217                 // Local player gets all privileges regardless of
3218                 // what's set on their account.
3219                 u64 privs = getPlayerPrivs(player);
3220
3221                 // Parse commands
3222                 std::wstring commandprefix = L"/#";
3223                 if(message.substr(0, commandprefix.size()) == commandprefix)
3224                 {
3225                         line += L"Server: ";
3226
3227                         message = message.substr(commandprefix.size());
3228
3229                         WStrfnd f1(message);
3230                         f1.next(L" "); // Skip over /#whatever
3231                         std::wstring paramstring = f1.next(L"");
3232
3233                         ServerCommandContext *ctx = new ServerCommandContext(
3234                                 str_split(message, L' '),
3235                                 paramstring,
3236                                 this,
3237                                 &m_env,
3238                                 player,
3239                                 privs);
3240
3241                         line += processServerCommand(ctx);
3242                         send_to_sender = ctx->flags & 1;
3243                         send_to_others = ctx->flags & 2;
3244                         delete ctx;
3245
3246                 }
3247                 else
3248                 {
3249                         if(privs & PRIV_SHOUT)
3250                         {
3251                                 line += L"<";
3252                                 line += name;
3253                                 line += L"> ";
3254                                 line += message;
3255                                 send_to_others = true;
3256                         }
3257                         else
3258                         {
3259                                 line += L"Server: You are not allowed to shout";
3260                                 send_to_sender = true;
3261                         }
3262                 }
3263
3264                 if(line != L"")
3265                 {
3266                         dstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
3267
3268                         /*
3269                                 Send the message to clients
3270                         */
3271                         for(core::map<u16, RemoteClient*>::Iterator
3272                                 i = m_clients.getIterator();
3273                                 i.atEnd() == false; i++)
3274                         {
3275                                 // Get client and check that it is valid
3276                                 RemoteClient *client = i.getNode()->getValue();
3277                                 assert(client->peer_id == i.getNode()->getKey());
3278                                 if(client->serialization_version == SER_FMT_VER_INVALID)
3279                                         continue;
3280
3281                                 // Filter recipient
3282                                 bool sender_selected = (peer_id == client->peer_id);
3283                                 if(sender_selected == true && send_to_sender == false)
3284                                         continue;
3285                                 if(sender_selected == false && send_to_others == false)
3286                                         continue;
3287
3288                                 SendChatMessage(client->peer_id, line);
3289                         }
3290                 }
3291         }
3292         else if(command == TOSERVER_DAMAGE)
3293         {
3294                 if(g_settings.getBool("enable_damage"))
3295                 {
3296                         std::string datastring((char*)&data[2], datasize-2);
3297                         std::istringstream is(datastring, std::ios_base::binary);
3298                         u8 damage = readU8(is);
3299                         if(player->hp > damage)
3300                         {
3301                                 player->hp -= damage;
3302                         }
3303                         else
3304                         {
3305                                 player->hp = 0;
3306
3307                                 dstream<<"TODO: Server: TOSERVER_HP_DECREMENT: Player dies"
3308                                                 <<std::endl;
3309
3310                                 v3f pos = findSpawnPos(m_env.getServerMap());
3311                                 player->setPosition(pos);
3312                                 player->hp = 20;
3313                                 SendMovePlayer(player);
3314                                 SendPlayerHP(player);
3315
3316                                 //TODO: Throw items around
3317                         }
3318                 }
3319
3320                 SendPlayerHP(player);
3321         }
3322         else if(command == TOSERVER_PASSWORD)
3323         {
3324                 /*
3325                         [0] u16 TOSERVER_PASSWORD
3326                         [2] u8[28] old password
3327                         [30] u8[28] new password
3328                 */
3329
3330                 if(datasize != 2+PASSWORD_SIZE*2)
3331                         return;
3332                 /*char password[PASSWORD_SIZE];
3333                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3334                         password[i] = data[2+i];
3335                 password[PASSWORD_SIZE-1] = 0;*/
3336                 std::string oldpwd;
3337                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3338                 {
3339                         char c = data[2+i];
3340                         if(c == 0)
3341                                 break;
3342                         oldpwd += c;
3343                 }
3344                 std::string newpwd;
3345                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3346                 {
3347                         char c = data[2+PASSWORD_SIZE+i];
3348                         if(c == 0)
3349                                 break;
3350                         newpwd += c;
3351                 }
3352
3353                 std::string playername = player->getName();
3354
3355                 if(m_authmanager.exists(playername) == false)
3356                 {
3357                         dstream<<"Server: playername not found in authmanager"<<std::endl;
3358                         // Wrong old password supplied!!
3359                         SendChatMessage(peer_id, L"playername not found in authmanager");
3360                         return;
3361                 }
3362
3363                 std::string checkpwd = m_authmanager.getPassword(playername);
3364
3365                 if(oldpwd != checkpwd)
3366                 {
3367                         dstream<<"Server: invalid old password"<<std::endl;
3368                         // Wrong old password supplied!!
3369                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
3370                         return;
3371                 }
3372
3373                 m_authmanager.setPassword(playername, newpwd);
3374
3375                 dstream<<"Server: password change successful for "<<playername
3376                                 <<std::endl;
3377                 SendChatMessage(peer_id, L"Password change successful");
3378         }
3379         else
3380         {
3381                 derr_server<<"WARNING: Server::ProcessData(): Ignoring "
3382                                 "unknown command "<<command<<std::endl;
3383         }
3384
3385         } //try
3386         catch(SendFailedException &e)
3387         {
3388                 derr_server<<"Server::ProcessData(): SendFailedException: "
3389                                 <<"what="<<e.what()
3390                                 <<std::endl;
3391         }
3392 }
3393
3394 void Server::onMapEditEvent(MapEditEvent *event)
3395 {
3396         //dstream<<"Server::onMapEditEvent()"<<std::endl;
3397         if(m_ignore_map_edit_events)
3398                 return;
3399         MapEditEvent *e = event->clone();
3400         m_unsent_map_edit_queue.push_back(e);
3401 }
3402
3403 Inventory* Server::getInventory(InventoryContext *c, std::string id)
3404 {
3405         if(id == "current_player")
3406         {
3407                 assert(c->current_player);
3408                 return &(c->current_player->inventory);
3409         }
3410
3411         Strfnd fn(id);
3412         std::string id0 = fn.next(":");
3413
3414         if(id0 == "nodemeta")
3415         {
3416                 v3s16 p;
3417                 p.X = stoi(fn.next(","));
3418                 p.Y = stoi(fn.next(","));
3419                 p.Z = stoi(fn.next(","));
3420                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3421                 if(meta)
3422                         return meta->getInventory();
3423                 dstream<<"nodemeta at ("<<p.X<<","<<p.Y<<","<<p.Z<<"): "
3424                                 <<"no metadata found"<<std::endl;
3425                 return NULL;
3426         }
3427
3428         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3429         return NULL;
3430 }
3431 void Server::inventoryModified(InventoryContext *c, std::string id)
3432 {
3433         if(id == "current_player")
3434         {
3435                 assert(c->current_player);
3436                 // Send inventory
3437                 UpdateCrafting(c->current_player->peer_id);
3438                 SendInventory(c->current_player->peer_id);
3439                 return;
3440         }
3441
3442         Strfnd fn(id);
3443         std::string id0 = fn.next(":");
3444
3445         if(id0 == "nodemeta")
3446         {
3447                 v3s16 p;
3448                 p.X = stoi(fn.next(","));
3449                 p.Y = stoi(fn.next(","));
3450                 p.Z = stoi(fn.next(","));
3451                 v3s16 blockpos = getNodeBlockPos(p);
3452
3453                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3454                 if(meta)
3455                         meta->inventoryModified();
3456
3457                 for(core::map<u16, RemoteClient*>::Iterator
3458                         i = m_clients.getIterator();
3459                         i.atEnd()==false; i++)
3460                 {
3461                         RemoteClient *client = i.getNode()->getValue();
3462                         client->SetBlockNotSent(blockpos);
3463                 }
3464
3465                 return;
3466         }
3467
3468         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3469 }
3470
3471 core::list<PlayerInfo> Server::getPlayerInfo()
3472 {
3473         DSTACK(__FUNCTION_NAME);
3474         JMutexAutoLock envlock(m_env_mutex);
3475         JMutexAutoLock conlock(m_con_mutex);
3476
3477         core::list<PlayerInfo> list;
3478
3479         core::list<Player*> players = m_env.getPlayers();
3480
3481         core::list<Player*>::Iterator i;
3482         for(i = players.begin();
3483                         i != players.end(); i++)
3484         {
3485                 PlayerInfo info;
3486
3487                 Player *player = *i;
3488
3489                 try{
3490                         con::Peer *peer = m_con.GetPeer(player->peer_id);
3491                         // Copy info from peer to info struct
3492                         info.id = peer->id;
3493                         info.address = peer->address;
3494                         info.avg_rtt = peer->avg_rtt;
3495                 }
3496                 catch(con::PeerNotFoundException &e)
3497                 {
3498                         // Set dummy peer info
3499                         info.id = 0;
3500                         info.address = Address(0,0,0,0,0);
3501                         info.avg_rtt = 0.0;
3502                 }
3503
3504                 snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
3505                 info.position = player->getPosition();
3506
3507                 list.push_back(info);
3508         }
3509
3510         return list;
3511 }
3512
3513
3514 void Server::peerAdded(con::Peer *peer)
3515 {
3516         DSTACK(__FUNCTION_NAME);
3517         dout_server<<"Server::peerAdded(): peer->id="
3518                         <<peer->id<<std::endl;
3519
3520         PeerChange c;
3521         c.type = PEER_ADDED;
3522         c.peer_id = peer->id;
3523         c.timeout = false;
3524         m_peer_change_queue.push_back(c);
3525 }
3526
3527 void Server::deletingPeer(con::Peer *peer, bool timeout)
3528 {
3529         DSTACK(__FUNCTION_NAME);
3530         dout_server<<"Server::deletingPeer(): peer->id="
3531                         <<peer->id<<", timeout="<<timeout<<std::endl;
3532
3533         PeerChange c;
3534         c.type = PEER_REMOVED;
3535         c.peer_id = peer->id;
3536         c.timeout = timeout;
3537         m_peer_change_queue.push_back(c);
3538 }
3539
3540 /*
3541         Static send methods
3542 */
3543
3544 void Server::SendHP(con::Connection &con, u16 peer_id, u8 hp)
3545 {
3546         DSTACK(__FUNCTION_NAME);
3547         std::ostringstream os(std::ios_base::binary);
3548
3549         writeU16(os, TOCLIENT_HP);
3550         writeU8(os, hp);
3551
3552         // Make data buffer
3553         std::string s = os.str();
3554         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3555         // Send as reliable
3556         con.Send(peer_id, 0, data, true);
3557 }
3558
3559 void Server::SendAccessDenied(con::Connection &con, u16 peer_id,
3560                 const std::wstring &reason)
3561 {
3562         DSTACK(__FUNCTION_NAME);
3563         std::ostringstream os(std::ios_base::binary);
3564
3565         writeU16(os, TOCLIENT_ACCESS_DENIED);
3566         os<<serializeWideString(reason);
3567
3568         // Make data buffer
3569         std::string s = os.str();
3570         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3571         // Send as reliable
3572         con.Send(peer_id, 0, data, true);
3573 }
3574
3575 /*
3576         Non-static send methods
3577 */
3578
3579 void Server::SendObjectData(float dtime)
3580 {
3581         DSTACK(__FUNCTION_NAME);
3582
3583         core::map<v3s16, bool> stepped_blocks;
3584
3585         for(core::map<u16, RemoteClient*>::Iterator
3586                 i = m_clients.getIterator();
3587                 i.atEnd() == false; i++)
3588         {
3589                 u16 peer_id = i.getNode()->getKey();
3590                 RemoteClient *client = i.getNode()->getValue();
3591                 assert(client->peer_id == peer_id);
3592
3593                 if(client->serialization_version == SER_FMT_VER_INVALID)
3594                         continue;
3595
3596                 client->SendObjectData(this, dtime, stepped_blocks);
3597         }
3598 }
3599
3600 void Server::SendPlayerInfos()
3601 {
3602         DSTACK(__FUNCTION_NAME);
3603
3604         //JMutexAutoLock envlock(m_env_mutex);
3605
3606         // Get connected players
3607         core::list<Player*> players = m_env.getPlayers(true);
3608
3609         u32 player_count = players.getSize();
3610         u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
3611
3612         SharedBuffer<u8> data(datasize);
3613         writeU16(&data[0], TOCLIENT_PLAYERINFO);
3614
3615         u32 start = 2;
3616         core::list<Player*>::Iterator i;
3617         for(i = players.begin();
3618                         i != players.end(); i++)
3619         {
3620                 Player *player = *i;
3621
3622                 /*dstream<<"Server sending player info for player with "
3623                                 "peer_id="<<player->peer_id<<std::endl;*/
3624
3625                 writeU16(&data[start], player->peer_id);
3626                 memset((char*)&data[start+2], 0, PLAYERNAME_SIZE);
3627                 snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
3628                 start += 2+PLAYERNAME_SIZE;
3629         }
3630
3631         //JMutexAutoLock conlock(m_con_mutex);
3632
3633         // Send as reliable
3634         m_con.SendToAll(0, data, true);
3635 }
3636
3637 void Server::SendInventory(u16 peer_id)
3638 {
3639         DSTACK(__FUNCTION_NAME);
3640
3641         Player* player = m_env.getPlayer(peer_id);
3642         assert(player);
3643
3644         /*
3645                 Serialize it
3646         */
3647
3648         std::ostringstream os;
3649         //os.imbue(std::locale("C"));
3650
3651         player->inventory.serialize(os);
3652
3653         std::string s = os.str();
3654
3655         SharedBuffer<u8> data(s.size()+2);
3656         writeU16(&data[0], TOCLIENT_INVENTORY);
3657         memcpy(&data[2], s.c_str(), s.size());
3658
3659         // Send as reliable
3660         m_con.Send(peer_id, 0, data, true);
3661 }
3662
3663 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3664 {
3665         DSTACK(__FUNCTION_NAME);
3666
3667         std::ostringstream os(std::ios_base::binary);
3668         u8 buf[12];
3669
3670         // Write command
3671         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3672         os.write((char*)buf, 2);
3673
3674         // Write length
3675         writeU16(buf, message.size());
3676         os.write((char*)buf, 2);
3677
3678         // Write string
3679         for(u32 i=0; i<message.size(); i++)
3680         {
3681                 u16 w = message[i];
3682                 writeU16(buf, w);
3683                 os.write((char*)buf, 2);
3684         }
3685
3686         // Make data buffer
3687         std::string s = os.str();
3688         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3689         // Send as reliable
3690         m_con.Send(peer_id, 0, data, true);
3691 }
3692
3693 void Server::BroadcastChatMessage(const std::wstring &message)
3694 {
3695         for(core::map<u16, RemoteClient*>::Iterator
3696                 i = m_clients.getIterator();
3697                 i.atEnd() == false; i++)
3698         {
3699                 // Get client and check that it is valid
3700                 RemoteClient *client = i.getNode()->getValue();
3701                 assert(client->peer_id == i.getNode()->getKey());
3702                 if(client->serialization_version == SER_FMT_VER_INVALID)
3703                         continue;
3704
3705                 SendChatMessage(client->peer_id, message);
3706         }
3707 }
3708
3709 void Server::SendPlayerHP(Player *player)
3710 {
3711         SendHP(m_con, player->peer_id, player->hp);
3712 }
3713
3714 void Server::SendMovePlayer(Player *player)
3715 {
3716         DSTACK(__FUNCTION_NAME);
3717         std::ostringstream os(std::ios_base::binary);
3718
3719         writeU16(os, TOCLIENT_MOVE_PLAYER);
3720         writeV3F1000(os, player->getPosition());
3721         writeF1000(os, player->getPitch());
3722         writeF1000(os, player->getYaw());
3723
3724         {
3725                 v3f pos = player->getPosition();
3726                 f32 pitch = player->getPitch();
3727                 f32 yaw = player->getYaw();
3728                 dstream<<"Server sending TOCLIENT_MOVE_PLAYER"
3729                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3730                                 <<" pitch="<<pitch
3731                                 <<" yaw="<<yaw
3732                                 <<std::endl;
3733         }
3734
3735         // Make data buffer
3736         std::string s = os.str();
3737         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3738         // Send as reliable
3739         m_con.Send(player->peer_id, 0, data, true);
3740 }
3741
3742 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3743         core::list<u16> *far_players, float far_d_nodes)
3744 {
3745         float maxd = far_d_nodes*BS;
3746         v3f p_f = intToFloat(p, BS);
3747
3748         // Create packet
3749         u32 replysize = 8;
3750         SharedBuffer<u8> reply(replysize);
3751         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3752         writeS16(&reply[2], p.X);
3753         writeS16(&reply[4], p.Y);
3754         writeS16(&reply[6], p.Z);
3755
3756         for(core::map<u16, RemoteClient*>::Iterator
3757                 i = m_clients.getIterator();
3758                 i.atEnd() == false; i++)
3759         {
3760                 // Get client and check that it is valid
3761                 RemoteClient *client = i.getNode()->getValue();
3762                 assert(client->peer_id == i.getNode()->getKey());
3763                 if(client->serialization_version == SER_FMT_VER_INVALID)
3764                         continue;
3765
3766                 // Don't send if it's the same one
3767                 if(client->peer_id == ignore_id)
3768                         continue;
3769
3770                 if(far_players)
3771                 {
3772                         // Get player
3773                         Player *player = m_env.getPlayer(client->peer_id);
3774                         if(player)
3775                         {
3776                                 // If player is far away, only set modified blocks not sent
3777                                 v3f player_pos = player->getPosition();
3778                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3779                                 {
3780                                         far_players->push_back(client->peer_id);
3781                                         continue;
3782                                 }
3783                         }
3784                 }
3785
3786                 // Send as reliable
3787                 m_con.Send(client->peer_id, 0, reply, true);
3788         }
3789 }
3790
3791 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3792                 core::list<u16> *far_players, float far_d_nodes)
3793 {
3794         float maxd = far_d_nodes*BS;
3795         v3f p_f = intToFloat(p, BS);
3796
3797         for(core::map<u16, RemoteClient*>::Iterator
3798                 i = m_clients.getIterator();
3799                 i.atEnd() == false; i++)
3800         {
3801                 // Get client and check that it is valid
3802                 RemoteClient *client = i.getNode()->getValue();
3803                 assert(client->peer_id == i.getNode()->getKey());
3804                 if(client->serialization_version == SER_FMT_VER_INVALID)
3805                         continue;
3806
3807                 // Don't send if it's the same one
3808                 if(client->peer_id == ignore_id)
3809                         continue;
3810
3811                 if(far_players)
3812                 {
3813                         // Get player
3814                         Player *player = m_env.getPlayer(client->peer_id);
3815                         if(player)
3816                         {
3817                                 // If player is far away, only set modified blocks not sent
3818                                 v3f player_pos = player->getPosition();
3819                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3820                                 {
3821                                         far_players->push_back(client->peer_id);
3822                                         continue;
3823                                 }
3824                         }
3825                 }
3826
3827                 // Create packet
3828                 u32 replysize = 8 + MapNode::serializedLength(client->serialization_version);
3829                 SharedBuffer<u8> reply(replysize);
3830                 writeU16(&reply[0], TOCLIENT_ADDNODE);
3831                 writeS16(&reply[2], p.X);
3832                 writeS16(&reply[4], p.Y);
3833                 writeS16(&reply[6], p.Z);
3834                 n.serialize(&reply[8], client->serialization_version);
3835
3836                 // Send as reliable
3837                 m_con.Send(client->peer_id, 0, reply, true);
3838         }
3839 }
3840
3841 void Server::setBlockNotSent(v3s16 p)
3842 {
3843         for(core::map<u16, RemoteClient*>::Iterator
3844                 i = m_clients.getIterator();
3845                 i.atEnd()==false; i++)
3846         {
3847                 RemoteClient *client = i.getNode()->getValue();
3848                 client->SetBlockNotSent(p);
3849         }
3850 }
3851
3852 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
3853 {
3854         DSTACK(__FUNCTION_NAME);
3855
3856         v3s16 p = block->getPos();
3857
3858 #if 0
3859         // Analyze it a bit
3860         bool completely_air = true;
3861         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
3862         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
3863         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
3864         {
3865                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
3866                 {
3867                         completely_air = false;
3868                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
3869                 }
3870         }
3871
3872         // Print result
3873         dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
3874         if(completely_air)
3875                 dstream<<"[completely air] ";
3876         dstream<<std::endl;
3877 #endif
3878
3879         /*
3880                 Create a packet with the block in the right format
3881         */
3882
3883         std::ostringstream os(std::ios_base::binary);
3884         block->serialize(os, ver);
3885         std::string s = os.str();
3886         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
3887
3888         u32 replysize = 8 + blockdata.getSize();
3889         SharedBuffer<u8> reply(replysize);
3890         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
3891         writeS16(&reply[2], p.X);
3892         writeS16(&reply[4], p.Y);
3893         writeS16(&reply[6], p.Z);
3894         memcpy(&reply[8], *blockdata, blockdata.getSize());
3895
3896         /*dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3897                         <<":  \tpacket size: "<<replysize<<std::endl;*/
3898
3899         /*
3900                 Send packet
3901         */
3902         m_con.Send(peer_id, 1, reply, true);
3903 }
3904
3905 void Server::SendBlocks(float dtime)
3906 {
3907         DSTACK(__FUNCTION_NAME);
3908
3909         JMutexAutoLock envlock(m_env_mutex);
3910         JMutexAutoLock conlock(m_con_mutex);
3911
3912         //TimeTaker timer("Server::SendBlocks");
3913
3914         core::array<PrioritySortedBlockTransfer> queue;
3915
3916         s32 total_sending = 0;
3917
3918         {
3919                 ScopeProfiler sp(&g_profiler, "Server: selecting blocks for sending");
3920
3921                 for(core::map<u16, RemoteClient*>::Iterator
3922                         i = m_clients.getIterator();
3923                         i.atEnd() == false; i++)
3924                 {
3925                         RemoteClient *client = i.getNode()->getValue();
3926                         assert(client->peer_id == i.getNode()->getKey());
3927
3928                         total_sending += client->SendingCount();
3929
3930                         if(client->serialization_version == SER_FMT_VER_INVALID)
3931                                 continue;
3932
3933                         client->GetNextBlocks(this, dtime, queue);
3934                 }
3935         }
3936
3937         // Sort.
3938         // Lowest priority number comes first.
3939         // Lowest is most important.
3940         queue.sort();
3941
3942         for(u32 i=0; i<queue.size(); i++)
3943         {
3944                 //TODO: Calculate limit dynamically
3945                 if(total_sending >= g_settings.getS32
3946                                 ("max_simultaneous_block_sends_server_total"))
3947                         break;
3948
3949                 PrioritySortedBlockTransfer q = queue[i];
3950
3951                 MapBlock *block = NULL;
3952                 try
3953                 {
3954                         block = m_env.getMap().getBlockNoCreate(q.pos);
3955                 }
3956                 catch(InvalidPositionException &e)
3957                 {
3958                         continue;
3959                 }
3960
3961                 RemoteClient *client = getClient(q.peer_id);
3962
3963                 SendBlockNoLock(q.peer_id, block, client->serialization_version);
3964
3965                 client->SentBlock(q.pos);
3966
3967                 total_sending++;
3968         }
3969 }
3970
3971 /*
3972         Something random
3973 */
3974
3975 void Server::UpdateCrafting(u16 peer_id)
3976 {
3977         DSTACK(__FUNCTION_NAME);
3978
3979         Player* player = m_env.getPlayer(peer_id);
3980         assert(player);
3981
3982         /*
3983                 Calculate crafting stuff
3984         */
3985         if(g_settings.getBool("creative_mode") == false)
3986         {
3987                 InventoryList *clist = player->inventory.getList("craft");
3988                 InventoryList *rlist = player->inventory.getList("craftresult");
3989
3990                 if(rlist->getUsedSlots() == 0)
3991                         player->craftresult_is_preview = true;
3992
3993                 if(rlist && player->craftresult_is_preview)
3994                 {
3995                         rlist->clearItems();
3996                 }
3997                 if(clist && rlist && player->craftresult_is_preview)
3998                 {
3999                         InventoryItem *items[9];
4000                         for(u16 i=0; i<9; i++)
4001                         {
4002                                 items[i] = clist->getItem(i);
4003                         }
4004
4005                         // Get result of crafting grid
4006                         InventoryItem *result = craft_get_result(items);
4007                         if(result)
4008                                 rlist->addItem(result);
4009                 }
4010
4011         } // if creative_mode == false
4012 }
4013
4014 RemoteClient* Server::getClient(u16 peer_id)
4015 {
4016         DSTACK(__FUNCTION_NAME);
4017         //JMutexAutoLock lock(m_con_mutex);
4018         core::map<u16, RemoteClient*>::Node *n;
4019         n = m_clients.find(peer_id);
4020         // A client should exist for all peers
4021         assert(n != NULL);
4022         return n->getValue();
4023 }
4024
4025 std::wstring Server::getStatusString()
4026 {
4027         std::wostringstream os(std::ios_base::binary);
4028         os<<L"# Server: ";
4029         // Version
4030         os<<L"version="<<narrow_to_wide(VERSION_STRING);
4031         // Uptime
4032         os<<L", uptime="<<m_uptime.get();
4033         // Information about clients
4034         os<<L", clients={";
4035         for(core::map<u16, RemoteClient*>::Iterator
4036                 i = m_clients.getIterator();
4037                 i.atEnd() == false; i++)
4038         {
4039                 // Get client and check that it is valid
4040                 RemoteClient *client = i.getNode()->getValue();
4041                 assert(client->peer_id == i.getNode()->getKey());
4042                 if(client->serialization_version == SER_FMT_VER_INVALID)
4043                         continue;
4044                 // Get player
4045                 Player *player = m_env.getPlayer(client->peer_id);
4046                 // Get name of player
4047                 std::wstring name = L"unknown";
4048                 if(player != NULL)
4049                         name = narrow_to_wide(player->getName());
4050                 // Add name to information string
4051                 os<<name<<L",";
4052         }
4053         os<<L"}";
4054         if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == false)
4055                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4056         if(g_settings.get("motd") != "")
4057                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings.get("motd"));
4058         return os.str();
4059 }
4060
4061 v3f findSpawnPos(ServerMap &map)
4062 {
4063         //return v3f(50,50,50)*BS;
4064
4065         v2s16 nodepos;
4066         s16 groundheight = 0;
4067
4068 #if 0
4069         nodepos = v2s16(0,0);
4070         groundheight = 20;
4071 #endif
4072
4073 #if 1
4074         // Try to find a good place a few times
4075         for(s32 i=0; i<1000; i++)
4076         {
4077                 s32 range = 1 + i;
4078                 // We're going to try to throw the player to this position
4079                 nodepos = v2s16(-range + (myrand()%(range*2)),
4080                                 -range + (myrand()%(range*2)));
4081                 v2s16 sectorpos = getNodeSectorPos(nodepos);
4082                 // Get sector (NOTE: Don't get because it's slow)
4083                 //m_env.getMap().emergeSector(sectorpos);
4084                 // Get ground height at point (fallbacks to heightmap function)
4085                 groundheight = map.findGroundLevel(nodepos);
4086                 // Don't go underwater
4087                 if(groundheight < WATER_LEVEL)
4088                 {
4089                         //dstream<<"-> Underwater"<<std::endl;
4090                         continue;
4091                 }
4092                 // Don't go to high places
4093                 if(groundheight > WATER_LEVEL + 4)
4094                 {
4095                         //dstream<<"-> Underwater"<<std::endl;
4096                         continue;
4097                 }
4098
4099                 // Found a good place
4100                 //dstream<<"Searched through "<<i<<" places."<<std::endl;
4101                 break;
4102         }
4103 #endif
4104
4105         // If no suitable place was not found, go above water at least.
4106         if(groundheight < WATER_LEVEL)
4107                 groundheight = WATER_LEVEL;
4108
4109         return intToFloat(v3s16(
4110                         nodepos.X,
4111                         groundheight + 3,
4112                         nodepos.Y
4113                         ), BS);
4114 }
4115
4116 Player *Server::emergePlayer(const char *name, const char *password, u16 peer_id)
4117 {
4118         /*
4119                 Try to get an existing player
4120         */
4121         Player *player = m_env.getPlayer(name);
4122         if(player != NULL)
4123         {
4124                 // If player is already connected, cancel
4125                 if(player->peer_id != 0)
4126                 {
4127                         dstream<<"emergePlayer(): Player already connected"<<std::endl;
4128                         return NULL;
4129                 }
4130
4131                 // Got one.
4132                 player->peer_id = peer_id;
4133
4134                 // Reset inventory to creative if in creative mode
4135                 if(g_settings.getBool("creative_mode"))
4136                 {
4137                         // Warning: double code below
4138                         // Backup actual inventory
4139                         player->inventory_backup = new Inventory();
4140                         *(player->inventory_backup) = player->inventory;
4141                         // Set creative inventory
4142                         craft_set_creative_inventory(player);
4143                 }
4144
4145                 return player;
4146         }
4147
4148         /*
4149                 If player with the wanted peer_id already exists, cancel.
4150         */
4151         if(m_env.getPlayer(peer_id) != NULL)
4152         {
4153                 dstream<<"emergePlayer(): Player with wrong name but same"
4154                                 " peer_id already exists"<<std::endl;
4155                 return NULL;
4156         }
4157
4158         /*
4159                 Create a new player
4160         */
4161         {
4162                 player = new ServerRemotePlayer();
4163                 //player->peer_id = c.peer_id;
4164                 //player->peer_id = PEER_ID_INEXISTENT;
4165                 player->peer_id = peer_id;
4166                 player->updateName(name);
4167                 m_authmanager.add(name);
4168                 m_authmanager.setPassword(name, password);
4169                 m_authmanager.setPrivs(name,
4170                                 stringToPrivs(g_settings.get("default_privs")));
4171
4172                 /*
4173                         Set player position
4174                 */
4175
4176                 dstream<<"Server: Finding spawn place for player \""
4177                                 <<player->getName()<<"\""<<std::endl;
4178
4179                 v3f pos = findSpawnPos(m_env.getServerMap());
4180
4181                 player->setPosition(pos);
4182
4183                 /*
4184                         Add player to environment
4185                 */
4186
4187                 m_env.addPlayer(player);
4188
4189                 /*
4190                         Add stuff to inventory
4191                 */
4192
4193                 if(g_settings.getBool("creative_mode"))
4194                 {
4195                         // Warning: double code above
4196                         // Backup actual inventory
4197                         player->inventory_backup = new Inventory();
4198                         *(player->inventory_backup) = player->inventory;
4199                         // Set creative inventory
4200                         craft_set_creative_inventory(player);
4201                 }
4202                 else if(g_settings.getBool("give_initial_stuff"))
4203                 {
4204                         craft_give_initial_stuff(player);
4205                 }
4206
4207                 return player;
4208
4209         } // create new player
4210 }
4211
4212 void Server::handlePeerChange(PeerChange &c)
4213 {
4214         JMutexAutoLock envlock(m_env_mutex);
4215         JMutexAutoLock conlock(m_con_mutex);
4216
4217         if(c.type == PEER_ADDED)
4218         {
4219                 /*
4220                         Add
4221                 */
4222
4223                 // Error check
4224                 core::map<u16, RemoteClient*>::Node *n;
4225                 n = m_clients.find(c.peer_id);
4226                 // The client shouldn't already exist
4227                 assert(n == NULL);
4228
4229                 // Create client
4230                 RemoteClient *client = new RemoteClient();
4231                 client->peer_id = c.peer_id;
4232                 m_clients.insert(client->peer_id, client);
4233
4234         } // PEER_ADDED
4235         else if(c.type == PEER_REMOVED)
4236         {
4237                 /*
4238                         Delete
4239                 */
4240
4241                 // Error check
4242                 core::map<u16, RemoteClient*>::Node *n;
4243                 n = m_clients.find(c.peer_id);
4244                 // The client should exist
4245                 assert(n != NULL);
4246
4247                 /*
4248                         Mark objects to be not known by the client
4249                 */
4250                 RemoteClient *client = n->getValue();
4251                 // Handle objects
4252                 for(core::map<u16, bool>::Iterator
4253                                 i = client->m_known_objects.getIterator();
4254                                 i.atEnd()==false; i++)
4255                 {
4256                         // Get object
4257                         u16 id = i.getNode()->getKey();
4258                         ServerActiveObject* obj = m_env.getActiveObject(id);
4259
4260                         if(obj && obj->m_known_by_count > 0)
4261                                 obj->m_known_by_count--;
4262                 }
4263
4264                 // Collect information about leaving in chat
4265                 std::wstring message;
4266                 {
4267                         std::wstring name = L"unknown";
4268                         Player *player = m_env.getPlayer(c.peer_id);
4269                         if(player != NULL)
4270                                 name = narrow_to_wide(player->getName());
4271
4272                         message += L"*** ";
4273                         message += name;
4274                         message += L" left game";
4275                         if(c.timeout)
4276                                 message += L" (timed out)";
4277                 }
4278
4279                 /*// Delete player
4280                 {
4281                         m_env.removePlayer(c.peer_id);
4282                 }*/
4283
4284                 // Set player client disconnected
4285                 {
4286                         Player *player = m_env.getPlayer(c.peer_id);
4287                         if(player != NULL)
4288                                 player->peer_id = 0;
4289                 }
4290
4291                 // Delete client
4292                 delete m_clients[c.peer_id];
4293                 m_clients.remove(c.peer_id);
4294
4295                 // Send player info to all remaining clients
4296                 SendPlayerInfos();
4297
4298                 // Send leave chat message to all remaining clients
4299                 BroadcastChatMessage(message);
4300
4301         } // PEER_REMOVED
4302         else
4303         {
4304                 assert(0);
4305         }
4306 }
4307
4308 void Server::handlePeerChanges()
4309 {
4310         while(m_peer_change_queue.size() > 0)
4311         {
4312                 PeerChange c = m_peer_change_queue.pop_front();
4313
4314                 dout_server<<"Server: Handling peer change: "
4315                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
4316                                 <<std::endl;
4317
4318                 handlePeerChange(c);
4319         }
4320 }
4321
4322 u64 Server::getPlayerPrivs(Player *player)
4323 {
4324         if(player==NULL)
4325                 return 0;
4326         std::string playername = player->getName();
4327         // Local player gets all privileges regardless of
4328         // what's set on their account.
4329         if(g_settings.get("name") == playername)
4330         {
4331                 return PRIV_ALL;
4332         }
4333         else
4334         {
4335                 return getPlayerAuthPrivs(playername);
4336         }
4337 }
4338
4339 void dedicated_server_loop(Server &server, bool &kill)
4340 {
4341         DSTACK(__FUNCTION_NAME);
4342
4343         dstream<<DTIME<<std::endl;
4344         dstream<<"========================"<<std::endl;
4345         dstream<<"Running dedicated server"<<std::endl;
4346         dstream<<"========================"<<std::endl;
4347         dstream<<std::endl;
4348
4349         IntervalLimiter m_profiler_interval;
4350
4351         for(;;)
4352         {
4353                 // This is kind of a hack but can be done like this
4354                 // because server.step() is very light
4355                 {
4356                         ScopeProfiler sp(&g_profiler, "dedicated server sleep");
4357                         sleep_ms(30);
4358                 }
4359                 server.step(0.030);
4360
4361                 if(server.getShutdownRequested() || kill)
4362                 {
4363                         dstream<<DTIME<<" dedicated_server_loop(): Quitting."<<std::endl;
4364                         break;
4365                 }
4366
4367                 /*
4368                         Profiler
4369                 */
4370                 float profiler_print_interval =
4371                                 g_settings.getFloat("profiler_print_interval");
4372                 if(profiler_print_interval != 0)
4373                 {
4374                         if(m_profiler_interval.step(0.030, profiler_print_interval))
4375                         {
4376                                 dstream<<"Profiler:"<<std::endl;
4377                                 g_profiler.print(dstream);
4378                                 g_profiler.clear();
4379                         }
4380                 }
4381
4382                 /*
4383                         Player info
4384                 */
4385                 static int counter = 0;
4386                 counter--;
4387                 if(counter <= 0)
4388                 {
4389                         counter = 10;
4390
4391                         core::list<PlayerInfo> list = server.getPlayerInfo();
4392                         core::list<PlayerInfo>::Iterator i;
4393                         static u32 sum_old = 0;
4394                         u32 sum = PIChecksum(list);
4395                         if(sum != sum_old)
4396                         {
4397                                 dstream<<DTIME<<"Player info:"<<std::endl;
4398                                 for(i=list.begin(); i!=list.end(); i++)
4399                                 {
4400                                         i->PrintLine(&dstream);
4401                                 }
4402                         }
4403                         sum_old = sum;
4404                 }
4405         }
4406 }
4407
4408