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 = player->getEyePosition();
 384         v3f camera_dir = v3f(0,0,1);
 385         camera_dir.rotateYZBy(player->getPitch());
 386         camera_dir.rotateXZBy(player->getYaw());
 387
 388         /*dstream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 389                         <<camera_dir.Z<<")"<<std::endl;*/
 390
 391         /*
 392                 Get the starting value of the block finder radius.
 393         */
 394
 395         if(m_last_center != center)
 396         {
 397                 m_nearest_unsent_d = 0;
 398                 m_last_center = center;
 399         }
 400
 401         /*dstream<<"m_nearest_unsent_reset_timer="
 402                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 403
 404         // This has to be incremented only when the nothing to send pause
 405         // is not active
 406         m_nearest_unsent_reset_timer += dtime;
 407
 408         // Reset periodically to avoid possible bugs or other mishaps
 409         if(m_nearest_unsent_reset_timer > 10.0)
 410         {
 411                 m_nearest_unsent_reset_timer = 0;
 412                 m_nearest_unsent_d = 0;
 413                 /*dstream<<"Resetting m_nearest_unsent_d for "
 414                                 <<server->getPlayerName(peer_id)<<std::endl;*/
 415         }
 416
 417         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 418         s16 d_start = m_nearest_unsent_d;
 419
 420         //dstream<<"d_start="<<d_start<<std::endl;
 421
 422         u16 max_simul_sends_setting = g_settings.getU16
 423                         ("max_simultaneous_block_sends_per_client");
 424         u16 max_simul_sends_usually = max_simul_sends_setting;
 425
 426         /*
 427                 Check the time from last addNode/removeNode.
 428
 429                 Decrease send rate if player is building stuff.
 430         */
 431         m_time_from_building += dtime;
 432         if(m_time_from_building < g_settings.getFloat(
 433                                 "full_block_send_enable_min_time_from_building"))
 434         {
 435                 max_simul_sends_usually
 436                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 437         }
 438
 439         /*
 440                 Number of blocks sending + number of blocks selected for sending
 441         */
 442         u32 num_blocks_selected = m_blocks_sending.size();
 443
 444         /*
 445                 next time d will be continued from the d from which the nearest
 446                 unsent block was found this time.
 447
 448                 This is because not necessarily any of the blocks found this
 449                 time are actually sent.
 450         */
 451         s32 new_nearest_unsent_d = -1;
 452
 453         s16 d_max = g_settings.getS16("max_block_send_distance");
 454         s16 d_max_gen = g_settings.getS16("max_block_generate_distance");
 455
 456         // Don't loop very much at a time
 457         if(d_max > d_start+1)
 458                 d_max = d_start+1;
 459         /*if(d_max_gen > d_start+2)
 460                 d_max_gen = d_start+2;*/
 461
 462         //dstream<<"Starting from "<<d_start<<std::endl;
 463
 464         bool sending_something = false;
 465
 466         bool no_blocks_found_for_sending = true;
 467
 468         bool queue_is_full = false;
 469
 470         s16 d;
 471         for(d = d_start; d <= d_max; d++)
 472         {
 473                 //dstream<<"RemoteClient::SendBlocks(): d="<<d<<std::endl;
 474
 475                 /*
 476                         If m_nearest_unsent_d was changed by the EmergeThread
 477                         (it can change it to 0 through SetBlockNotSent),
 478                         update our d to it.
 479                         Else update m_nearest_unsent_d
 480                 */
 481                 /*if(m_nearest_unsent_d != last_nearest_unsent_d)
 482                 {
 483                         d = m_nearest_unsent_d;
 484                         last_nearest_unsent_d = m_nearest_unsent_d;
 485                 }*/
 486
 487                 /*
 488                         Get the border/face dot coordinates of a "d-radiused"
 489                         box
 490                 */
 491                 core::list<v3s16> list;
 492                 getFacePositions(list, d);
 493
 494                 core::list<v3s16>::Iterator li;
 495                 for(li=list.begin(); li!=list.end(); li++)
 496                 {
 497                         v3s16 p = *li + center;
 498
 499                         /*
 500                                 Send throttling
 501                                 - Don't allow too many simultaneous transfers
 502                                 - EXCEPT when the blocks are very close
 503
 504                                 Also, don't send blocks that are already flying.
 505                         */
 506
 507                         // Start with the usual maximum
 508                         u16 max_simul_dynamic = max_simul_sends_usually;
 509
 510                         // If block is very close, allow full maximum
 511                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 512                                 max_simul_dynamic = max_simul_sends_setting;
 513
 514                         // Don't select too many blocks for sending
 515                         if(num_blocks_selected >= max_simul_dynamic)
 516                         {
 517                                 queue_is_full = true;
 518                                 goto queue_full_break;
 519                         }
 520
 521                         // Don't send blocks that are currently being transferred
 522                         if(m_blocks_sending.find(p) != NULL)
 523                                 continue;
 524
 525                         /*
 526                                 Do not go over-limit
 527                         */
 528                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 529                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 530                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 531                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 532                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 533                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 534                                 continue;
 535
 536                         // If this is true, inexistent block will be made from scratch
 537                         bool generate = d <= d_max_gen;
 538
 539                         {
 540                                 /*// Limit the generating area vertically to 2/3
 541                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 542                                         generate = false;*/
 543
 544                                 // Limit the send area vertically to 2/3
 545                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 546                                         continue;
 547                         }
 548
 549 #if 1
 550                         /*
 551                                 If block is far away, don't generate it unless it is
 552                                 near ground level.
 553                         */
 554                         if(d >= 4)
 555                         {
 556         #if 1
 557                                 // Block center y in nodes
 558                                 f32 y = (f32)(p.Y * MAP_BLOCKSIZE + MAP_BLOCKSIZE/2);
 559                                 // Don't generate if it's very high or very low
 560                                 if(y < -64 || y > 64)
 561                                         generate = false;
 562         #endif
 563         #if 0
 564                                 v2s16 p2d_nodes_center(
 565                                         MAP_BLOCKSIZE*p.X,
 566                                         MAP_BLOCKSIZE*p.Z);
 567
 568                                 // Get ground height in nodes
 569                                 s16 gh = server->m_env.getServerMap().findGroundLevel(
 570                                                 p2d_nodes_center);
 571
 572                                 // If differs a lot, don't generate
 573                                 if(fabs(gh - y) > MAP_BLOCKSIZE*2)
 574                                         generate = false;
 575                                         // Actually, don't even send it
 576                                         //continue;
 577         #endif
 578                         }
 579 #endif
 580
 581                         //dstream<<"d="<<d<<std::endl;
 582
 583                         /*
 584                                 Don't generate or send if not in sight
 585                         */
 586
 587                         if(isBlockInSight(p, camera_pos, camera_dir, 10000*BS) == false)
 588                         {
 589                                 continue;
 590                         }
 591
 592                         /*
 593                                 Don't send already sent blocks
 594                         */
 595                         {
 596                                 if(m_blocks_sent.find(p) != NULL)
 597                                 {
 598                                         continue;
 599                                 }
 600                         }
 601
 602                         /*
 603                                 Check if map has this block
 604                         */
 605                         MapBlock *block = server->m_env.getMap().getBlockNoCreateNoEx(p);
 606
 607                         bool surely_not_found_on_disk = false;
 608                         bool block_is_invalid = false;
 609                         if(block != NULL)
 610                         {
 611                                 // Reset usage timer, this block will be of use in the future.
 612                                 block->resetUsageTimer();
 613
 614                                 // Block is dummy if data doesn't exist.
 615                                 // It means it has been not found from disk and not generated
 616                                 if(block->isDummy())
 617                                 {
 618                                         surely_not_found_on_disk = true;
 619                                 }
 620
 621                                 // Block is valid if lighting is up-to-date and data exists
 622                                 if(block->isValid() == false)
 623                                 {
 624                                         block_is_invalid = true;
 625                                 }
 626
 627                                 /*if(block->isFullyGenerated() == false)
 628                                 {
 629                                         block_is_invalid = true;
 630                                 }*/
 631
 632 #if 0
 633                                 v2s16 p2d(p.X, p.Z);
 634                                 ServerMap *map = (ServerMap*)(&server->m_env.getMap());
 635                                 v2s16 chunkpos = map->sector_to_chunk(p2d);
 636                                 if(map->chunkNonVolatile(chunkpos) == false)
 637                                         block_is_invalid = true;
 638 #endif
 639                                 if(block->isGenerated() == false)
 640                                         block_is_invalid = true;
 641 #if 1
 642                                 /*
 643                                         If block is not close, don't send it unless it is near
 644                                         ground level.
 645
 646                                         Block is near ground level if night-time mesh
 647                                         differs from day-time mesh.
 648                                 */
 649                                 if(d > 3)
 650                                 {
 651                                         if(block->dayNightDiffed() == false)
 652                                                 continue;
 653                                 }
 654 #endif
 655                         }
 656
 657                         /*
 658                                 If block has been marked to not exist on disk (dummy)
 659                                 and generating new ones is not wanted, skip block.
 660                         */
 661                         if(generate == false && surely_not_found_on_disk == true)
 662                         {
 663                                 // get next one.
 664                                 continue;
 665                         }
 666
 667                         /*
 668                                 Record the lowest d from which a block has been
 669                                 found being not sent and possibly to exist
 670                         */
 671                         if(no_blocks_found_for_sending)
 672                         {
 673                                 if(generate == true)
 674                                         new_nearest_unsent_d = d;
 675                         }
 676
 677                         no_blocks_found_for_sending = false;
 678
 679                         /*
 680                                 Add inexistent block to emerge queue.
 681                         */
 682                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 683                         {
 684                                 //TODO: Get value from somewhere
 685                                 // Allow only one block in emerge queue
 686                                 //if(server->m_emerge_queue.peerItemCount(peer_id) < 1)
 687                                 // Allow two blocks in queue per client
 688                                 if(server->m_emerge_queue.peerItemCount(peer_id) < 2)
 689                                 {
 690                                         //dstream<<"Adding block to emerge queue"<<std::endl;
 691
 692                                         // Add it to the emerge queue and trigger the thread
 693
 694                                         u8 flags = 0;
 695                                         if(generate == false)
 696                                                 flags |= BLOCK_EMERGE_FLAG_FROMDISK;
 697
 698                                         server->m_emerge_queue.addBlock(peer_id, p, flags);
 699                                         server->m_emergethread.trigger();
 700                                 }
 701
 702                                 // get next one.
 703                                 continue;
 704                         }
 705
 706                         /*
 707                                 Add block to send queue
 708                         */
 709
 710                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 711
 712                         dest.push_back(q);
 713
 714                         num_blocks_selected += 1;
 715                         sending_something = true;
 716                 }
 717         }
 718 queue_full_break:
 719
 720         //dstream<<"Stopped at "<<d<<std::endl;
 721
 722         if(no_blocks_found_for_sending)
 723         {
 724                 if(queue_is_full == false)
 725                         new_nearest_unsent_d = d;
 726         }
 727
 728         if(new_nearest_unsent_d != -1)
 729                 m_nearest_unsent_d = new_nearest_unsent_d;
 730
 731         if(sending_something == false)
 732         {
 733                 m_nothing_to_send_counter++;
 734                 if((s16)m_nothing_to_send_counter >=
 735                                 g_settings.getS16("max_block_send_distance"))
 736                 {
 737                         // Pause time in seconds
 738                         m_nothing_to_send_pause_timer = 1.0;
 739                         /*dstream<<"nothing to send to "
 740                                         <<server->getPlayerName(peer_id)
 741                                         <<" (d="<<d<<")"<<std::endl;*/
 742                 }
 743         }
 744         else
 745         {
 746                 m_nothing_to_send_counter = 0;
 747         }
 748
 749         /*timer_result = timer.stop(true);
 750         if(timer_result != 0)
 751                 dstream<<"GetNextBlocks duration: "<<timer_result<<" (!=0)"<<std::endl;*/
 752 }
 753
 754 void RemoteClient::SendObjectData(
 755                 Server *server,
 756                 float dtime,
 757                 core::map<v3s16, bool> &stepped_blocks
 758         )
 759 {
 760         DSTACK(__FUNCTION_NAME);
 761
 762         // Can't send anything without knowing version
 763         if(serialization_version == SER_FMT_VER_INVALID)
 764         {
 765                 dstream<<"RemoteClient::SendObjectData(): Not sending, no version."
 766                                 <<std::endl;
 767                 return;
 768         }
 769
 770         /*
 771                 Send a TOCLIENT_OBJECTDATA packet.
 772                 Sent as unreliable.
 773
 774                 u16 command
 775                 u16 number of player positions
 776                 for each player:
 777                         v3s32 position*100
 778                         v3s32 speed*100
 779                         s32 pitch*100
 780                         s32 yaw*100
 781                 u16 count of blocks
 782                 for each block:
 783                         block objects
 784         */
 785
 786         std::ostringstream os(std::ios_base::binary);
 787         u8 buf[12];
 788
 789         // Write command
 790         writeU16(buf, TOCLIENT_OBJECTDATA);
 791         os.write((char*)buf, 2);
 792
 793         /*
 794                 Get and write player data
 795         */
 796
 797         // Get connected players
 798         core::list<Player*> players = server->m_env.getPlayers(true);
 799
 800         // Write player count
 801         u16 playercount = players.size();
 802         writeU16(buf, playercount);
 803         os.write((char*)buf, 2);
 804
 805         core::list<Player*>::Iterator i;
 806         for(i = players.begin();
 807                         i != players.end(); i++)
 808         {
 809                 Player *player = *i;
 810
 811                 v3f pf = player->getPosition();
 812                 v3f sf = player->getSpeed();
 813
 814                 v3s32 position_i(pf.X*100, pf.Y*100, pf.Z*100);
 815                 v3s32 speed_i   (sf.X*100, sf.Y*100, sf.Z*100);
 816                 s32   pitch_i   (player->getPitch() * 100);
 817                 s32   yaw_i     (player->getYaw() * 100);
 818
 819                 writeU16(buf, player->peer_id);
 820                 os.write((char*)buf, 2);
 821                 writeV3S32(buf, position_i);
 822                 os.write((char*)buf, 12);
 823                 writeV3S32(buf, speed_i);
 824                 os.write((char*)buf, 12);
 825                 writeS32(buf, pitch_i);
 826                 os.write((char*)buf, 4);
 827                 writeS32(buf, yaw_i);
 828                 os.write((char*)buf, 4);
 829         }
 830
 831         /*
 832                 Get and write object data
 833         */
 834
 835         /*
 836                 Get nearby blocks.
 837
 838                 For making players to be able to build to their nearby
 839                 environment (building is not possible on blocks that are not
 840                 in memory):
 841                 - Set blocks changed
 842                 - Add blocks to emerge queue if they are not found
 843
 844                 SUGGESTION: These could be ignored from the backside of the player
 845         */
 846
 847         Player *player = server->m_env.getPlayer(peer_id);
 848
 849         assert(player);
 850
 851         v3f playerpos = player->getPosition();
 852         v3f playerspeed = player->getSpeed();
 853
 854         v3s16 center_nodepos = floatToInt(playerpos, BS);
 855         v3s16 center = getNodeBlockPos(center_nodepos);
 856
 857         s16 d_max = g_settings.getS16("active_object_range");
 858
 859         // Number of blocks whose objects were written to bos
 860         u16 blockcount = 0;
 861
 862         std::ostringstream bos(std::ios_base::binary);
 863
 864         for(s16 d = 0; d <= d_max; d++)
 865         {
 866                 core::list<v3s16> list;
 867                 getFacePositions(list, d);
 868
 869                 core::list<v3s16>::Iterator li;
 870                 for(li=list.begin(); li!=list.end(); li++)
 871                 {
 872                         v3s16 p = *li + center;
 873
 874                         /*
 875                                 Ignore blocks that haven't been sent to the client
 876                         */
 877                         {
 878                                 if(m_blocks_sent.find(p) == NULL)
 879                                         continue;
 880                         }
 881
 882                         // Try stepping block and add it to a send queue
 883                         try
 884                         {
 885
 886                         // Get block
 887                         MapBlock *block = server->m_env.getMap().getBlockNoCreate(p);
 888
 889                         /*
 890                                 Step block if not in stepped_blocks and add to stepped_blocks.
 891                         */
 892                         if(stepped_blocks.find(p) == NULL)
 893                         {
 894                                 block->stepObjects(dtime, true, server->m_env.getDayNightRatio());
 895                                 stepped_blocks.insert(p, true);
 896                                 block->setChangedFlag();
 897                         }
 898
 899                         // Skip block if there are no objects
 900                         if(block->getObjectCount() == 0)
 901                                 continue;
 902
 903                         /*
 904                                 Write objects
 905                         */
 906
 907                         // Write blockpos
 908                         writeV3S16(buf, p);
 909                         bos.write((char*)buf, 6);
 910
 911                         // Write objects
 912                         //block->serializeObjects(bos, serialization_version); // DEPRECATED
 913                         // count=0
 914                         writeU16(bos, 0);
 915
 916                         blockcount++;
 917
 918                         /*
 919                                 Stop collecting objects if data is already too big
 920                         */
 921                         // Sum of player and object data sizes
 922                         s32 sum = (s32)os.tellp() + 2 + (s32)bos.tellp();
 923                         // break out if data too big
 924                         if(sum > MAX_OBJECTDATA_SIZE)
 925                         {
 926                                 goto skip_subsequent;
 927                         }
 928
 929                         } //try
 930                         catch(InvalidPositionException &e)
 931                         {
 932                                 // Not in memory
 933                                 // Add it to the emerge queue and trigger the thread.
 934                                 // Fetch the block only if it is on disk.
 935
 936                                 // Grab and increment counter
 937                                 /*SharedPtr<JMutexAutoLock> lock
 938                                                 (m_num_blocks_in_emerge_queue.getLock());
 939                                 m_num_blocks_in_emerge_queue.m_value++;*/
 940
 941                                 // Add to queue as an anonymous fetch from disk
 942                                 u8 flags = BLOCK_EMERGE_FLAG_FROMDISK;
 943                                 server->m_emerge_queue.addBlock(0, p, flags);
 944                                 server->m_emergethread.trigger();
 945                         }
 946                 }
 947         }
 948
 949 skip_subsequent:
 950
 951         // Write block count
 952         writeU16(buf, blockcount);
 953         os.write((char*)buf, 2);
 954
 955         // Write block objects
 956         os<<bos.str();
 957
 958         /*
 959                 Send data
 960         */
 961
 962         //dstream<<"Server: Sending object data to "<<peer_id<<std::endl;
 963
 964         // Make data buffer
 965         std::string s = os.str();
 966         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
 967         // Send as unreliable
 968         server->m_con.Send(peer_id, 0, data, false);
 969 }
 970
 971 void RemoteClient::GotBlock(v3s16 p)
 972 {
 973         if(m_blocks_sending.find(p) != NULL)
 974                 m_blocks_sending.remove(p);
 975         else
 976         {
 977                 /*dstream<<"RemoteClient::GotBlock(): Didn't find in"
 978                                 " m_blocks_sending"<<std::endl;*/
 979                 m_excess_gotblocks++;
 980         }
 981         m_blocks_sent.insert(p, true);
 982 }
 983
 984 void RemoteClient::SentBlock(v3s16 p)
 985 {
 986         if(m_blocks_sending.find(p) == NULL)
 987                 m_blocks_sending.insert(p, 0.0);
 988         else
 989                 dstream<<"RemoteClient::SentBlock(): Sent block"
 990                                 " already in m_blocks_sending"<<std::endl;
 991 }
 992
 993 void RemoteClient::SetBlockNotSent(v3s16 p)
 994 {
 995         m_nearest_unsent_d = 0;
 996
 997         if(m_blocks_sending.find(p) != NULL)
 998                 m_blocks_sending.remove(p);
 999         if(m_blocks_sent.find(p) != NULL)
1000                 m_blocks_sent.remove(p);
1001 }
1002
1003 void RemoteClient::SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks)
1004 {
1005         m_nearest_unsent_d = 0;
1006
1007         for(core::map<v3s16, MapBlock*>::Iterator
1008                         i = blocks.getIterator();
1009                         i.atEnd()==false; i++)
1010         {
1011                 v3s16 p = i.getNode()->getKey();
1012
1013                 if(m_blocks_sending.find(p) != NULL)
1014                         m_blocks_sending.remove(p);
1015                 if(m_blocks_sent.find(p) != NULL)
1016                         m_blocks_sent.remove(p);
1017         }
1018 }
1019
1020 /*
1021         PlayerInfo
1022 */
1023
1024 PlayerInfo::PlayerInfo()
1025 {
1026         name[0] = 0;
1027         avg_rtt = 0;
1028 }
1029
1030 void PlayerInfo::PrintLine(std::ostream *s)
1031 {
1032         (*s)<<id<<": ";
1033         (*s)<<"\""<<name<<"\" ("
1034                         <<(position.X/10)<<","<<(position.Y/10)
1035                         <<","<<(position.Z/10)<<") ";
1036         address.print(s);
1037         (*s)<<" avg_rtt="<<avg_rtt;
1038         (*s)<<std::endl;
1039 }
1040
1041 u32 PIChecksum(core::list<PlayerInfo> &l)
1042 {
1043         core::list<PlayerInfo>::Iterator i;
1044         u32 checksum = 1;
1045         u32 a = 10;
1046         for(i=l.begin(); i!=l.end(); i++)
1047         {
1048                 checksum += a * (i->id+1);
1049                 checksum ^= 0x435aafcd;
1050                 a *= 10;
1051         }
1052         return checksum;
1053 }
1054
1055 /*
1056         Server
1057 */
1058
1059 Server::Server(
1060                 std::string mapsavedir,
1061                 std::string configpath
1062         ):
1063         m_env(new ServerMap(mapsavedir), this),
1064         m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
1065         m_authmanager(mapsavedir+"/auth.txt"),
1066         m_banmanager(mapsavedir+"/ipban.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                                 dstream<<"Server: MEET_OTHER"<<std::endl;
1736                                 prof.add("MEET_OTHER", 1);
1737                                 for(core::map<v3s16, bool>::Iterator
1738                                                 i = event->modified_blocks.getIterator();
1739                                                 i.atEnd()==false; i++)
1740                                 {
1741                                         v3s16 p = i.getNode()->getKey();
1742                                         setBlockNotSent(p);
1743                                 }
1744                         }
1745                         else
1746                         {
1747                                 prof.add("unknown", 1);
1748                                 dstream<<"WARNING: Server: Unknown MapEditEvent "
1749                                                 <<((u32)event->type)<<std::endl;
1750                         }
1751
1752                         /*
1753                                 Set blocks not sent to far players
1754                         */
1755                         if(far_players.size() > 0)
1756                         {
1757                                 // Convert list format to that wanted by SetBlocksNotSent
1758                                 core::map<v3s16, MapBlock*> modified_blocks2;
1759                                 for(core::map<v3s16, bool>::Iterator
1760                                                 i = event->modified_blocks.getIterator();
1761                                                 i.atEnd()==false; i++)
1762                                 {
1763                                         v3s16 p = i.getNode()->getKey();
1764                                         modified_blocks2.insert(p,
1765                                                         m_env.getMap().getBlockNoCreateNoEx(p));
1766                                 }
1767                                 // Set blocks not sent
1768                                 for(core::list<u16>::Iterator
1769                                                 i = far_players.begin();
1770                                                 i != far_players.end(); i++)
1771                                 {
1772                                         u16 peer_id = *i;
1773                                         RemoteClient *client = getClient(peer_id);
1774                                         if(client==NULL)
1775                                                 continue;
1776                                         client->SetBlocksNotSent(modified_blocks2);
1777                                 }
1778                         }
1779
1780                         delete event;
1781
1782                         /*// Don't send too many at a time
1783                         count++;
1784                         if(count >= 1 && m_unsent_map_edit_queue.size() < 100)
1785                                 break;*/
1786                 }
1787
1788                 if(got_any_events)
1789                 {
1790                         dstream<<"Server: MapEditEvents:"<<std::endl;
1791                         prof.print(dstream);
1792                 }
1793
1794         }
1795
1796         /*
1797                 Send object positions
1798                 TODO: Get rid of MapBlockObjects
1799         */
1800         {
1801                 float &counter = m_objectdata_timer;
1802                 counter += dtime;
1803                 if(counter >= g_settings.getFloat("objectdata_interval"))
1804                 {
1805                         JMutexAutoLock lock1(m_env_mutex);
1806                         JMutexAutoLock lock2(m_con_mutex);
1807
1808                         ScopeProfiler sp(&g_profiler, "Server: sending mbo positions");
1809
1810                         SendObjectData(counter);
1811
1812                         counter = 0.0;
1813                 }
1814         }
1815
1816         /*
1817                 Trigger emergethread (it somehow gets to a non-triggered but
1818                 bysy state sometimes)
1819         */
1820         {
1821                 float &counter = m_emergethread_trigger_timer;
1822                 counter += dtime;
1823                 if(counter >= 2.0)
1824                 {
1825                         counter = 0.0;
1826
1827                         m_emergethread.trigger();
1828                 }
1829         }
1830
1831         // Save map, players and auth stuff
1832         {
1833                 float &counter = m_savemap_timer;
1834                 counter += dtime;
1835                 if(counter >= g_settings.getFloat("server_map_save_interval"))
1836                 {
1837                         counter = 0.0;
1838
1839                         ScopeProfiler sp(&g_profiler, "Server: saving stuff");
1840
1841                         // Auth stuff
1842                         if(m_authmanager.isModified())
1843                                 m_authmanager.save();
1844
1845                         //Bann stuff
1846                         if(m_banmanager.isModified())
1847                                 m_banmanager.save();
1848
1849                         // Map
1850                         JMutexAutoLock lock(m_env_mutex);
1851
1852                         /*// Unload unused data (delete from memory)
1853                         m_env.getMap().unloadUnusedData(
1854                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1855                                         */
1856                         /*u32 deleted_count = m_env.getMap().unloadUnusedData(
1857                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1858                                         */
1859
1860                         // Save only changed parts
1861                         m_env.getMap().save(true);
1862
1863                         /*if(deleted_count > 0)
1864                         {
1865                                 dout_server<<"Server: Unloaded "<<deleted_count
1866                                                 <<" blocks from memory"<<std::endl;
1867                         }*/
1868
1869                         // Save players
1870                         m_env.serializePlayers(m_mapsavedir);
1871
1872                         // Save environment metadata
1873                         m_env.saveMeta(m_mapsavedir);
1874                 }
1875         }
1876 }
1877
1878 void Server::Receive()
1879 {
1880         DSTACK(__FUNCTION_NAME);
1881         u32 data_maxsize = 10000;
1882         Buffer<u8> data(data_maxsize);
1883         u16 peer_id;
1884         u32 datasize;
1885         try{
1886                 {
1887                         JMutexAutoLock conlock(m_con_mutex);
1888                         datasize = m_con.Receive(peer_id, *data, data_maxsize);
1889                 }
1890
1891                 // This has to be called so that the client list gets synced
1892                 // with the peer list of the connection
1893                 handlePeerChanges();
1894
1895                 ProcessData(*data, datasize, peer_id);
1896         }
1897         catch(con::InvalidIncomingDataException &e)
1898         {
1899                 derr_server<<"Server::Receive(): "
1900                                 "InvalidIncomingDataException: what()="
1901                                 <<e.what()<<std::endl;
1902         }
1903         catch(con::PeerNotFoundException &e)
1904         {
1905                 //NOTE: This is not needed anymore
1906
1907                 // The peer has been disconnected.
1908                 // Find the associated player and remove it.
1909
1910                 /*JMutexAutoLock envlock(m_env_mutex);
1911
1912                 dout_server<<"ServerThread: peer_id="<<peer_id
1913                                 <<" has apparently closed connection. "
1914                                 <<"Removing player."<<std::endl;
1915
1916                 m_env.removePlayer(peer_id);*/
1917         }
1918 }
1919
1920 void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
1921 {
1922         DSTACK(__FUNCTION_NAME);
1923         // Environment is locked first.
1924         JMutexAutoLock envlock(m_env_mutex);
1925         JMutexAutoLock conlock(m_con_mutex);
1926
1927         con::Peer *peer;
1928         try{
1929                 peer = m_con.GetPeer(peer_id);
1930         }
1931         catch(con::PeerNotFoundException &e)
1932         {
1933                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: peer "
1934                                 <<peer_id<<" not found"<<std::endl;
1935                 return;
1936         }
1937
1938         // drop player if is ip is banned
1939         if(m_banmanager.isIpBanned(peer->address.serializeString())){
1940                 SendAccessDenied(m_con, peer_id,
1941                                 L"Your ip is banned. Banned name was "
1942                                 +narrow_to_wide(m_banmanager.getBanName(
1943                                         peer->address.serializeString())));
1944                 m_con.deletePeer(peer_id, false);
1945                 return;
1946         }
1947
1948         u8 peer_ser_ver = getClient(peer->id)->serialization_version;
1949
1950         try
1951         {
1952
1953         if(datasize < 2)
1954                 return;
1955
1956         ToServerCommand command = (ToServerCommand)readU16(&data[0]);
1957
1958         if(command == TOSERVER_INIT)
1959         {
1960                 // [0] u16 TOSERVER_INIT
1961                 // [2] u8 SER_FMT_VER_HIGHEST
1962                 // [3] u8[20] player_name
1963                 // [23] u8[28] password <--- can be sent without this, from old versions
1964
1965                 if(datasize < 2+1+PLAYERNAME_SIZE)
1966                         return;
1967
1968                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT from "
1969                                 <<peer->id<<std::endl;
1970
1971                 // First byte after command is maximum supported
1972                 // serialization version
1973                 u8 client_max = data[2];
1974                 u8 our_max = SER_FMT_VER_HIGHEST;
1975                 // Use the highest version supported by both
1976                 u8 deployed = core::min_(client_max, our_max);
1977                 // If it's lower than the lowest supported, give up.
1978                 if(deployed < SER_FMT_VER_LOWEST)
1979                         deployed = SER_FMT_VER_INVALID;
1980
1981                 //peer->serialization_version = deployed;
1982                 getClient(peer->id)->pending_serialization_version = deployed;
1983
1984                 if(deployed == SER_FMT_VER_INVALID)
1985                 {
1986                         derr_server<<DTIME<<"Server: Cannot negotiate "
1987                                         "serialization version with peer "
1988                                         <<peer_id<<std::endl;
1989                         SendAccessDenied(m_con, peer_id,
1990                                         L"Your client is too old (map format)");
1991                         return;
1992                 }
1993
1994                 /*
1995                         Read and check network protocol version
1996                 */
1997
1998                 u16 net_proto_version = 0;
1999                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
2000                 {
2001                         net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
2002                 }
2003
2004                 getClient(peer->id)->net_proto_version = net_proto_version;
2005
2006                 if(net_proto_version == 0)
2007                 {
2008                         SendAccessDenied(m_con, peer_id,
2009                                         L"Your client is too old. Please upgrade.");
2010                         return;
2011                 }
2012
2013                 /*
2014                         Set up player
2015                 */
2016
2017                 // Get player name
2018                 char playername[PLAYERNAME_SIZE];
2019                 for(u32 i=0; i<PLAYERNAME_SIZE-1; i++)
2020                 {
2021                         playername[i] = data[3+i];
2022                 }
2023                 playername[PLAYERNAME_SIZE-1] = 0;
2024
2025                 if(playername[0]=='\0')
2026                 {
2027                         derr_server<<DTIME<<"Server: Player has empty name"<<std::endl;
2028                         SendAccessDenied(m_con, peer_id,
2029                                         L"Empty name");
2030                         return;
2031                 }
2032
2033                 if(string_allowed(playername, PLAYERNAME_ALLOWED_CHARS)==false)
2034                 {
2035                         derr_server<<DTIME<<"Server: Player has invalid name"<<std::endl;
2036                         SendAccessDenied(m_con, peer_id,
2037                                         L"Name contains unallowed characters");
2038                         return;
2039                 }
2040
2041                 // Get password
2042                 char password[PASSWORD_SIZE];
2043                 if(datasize < 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE)
2044                 {
2045                         // old version - assume blank password
2046                         password[0] = 0;
2047                 }
2048                 else
2049                 {
2050                                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2051                                 {
2052                                         password[i] = data[23+i];
2053                                 }
2054                                 password[PASSWORD_SIZE-1] = 0;
2055                 }
2056
2057                 std::string checkpwd;
2058                 if(m_authmanager.exists(playername))
2059                 {
2060                         checkpwd = m_authmanager.getPassword(playername);
2061                 }
2062                 else
2063                 {
2064                         checkpwd = g_settings.get("default_password");
2065                 }
2066
2067                 /*dstream<<"Server: Client gave password '"<<password
2068                                 <<"', the correct one is '"<<checkpwd<<"'"<<std::endl;*/
2069
2070                 if(password != checkpwd && m_authmanager.exists(playername))
2071                 {
2072                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2073                                         <<": supplied invalid password for "
2074                                         <<playername<<std::endl;
2075                         SendAccessDenied(m_con, peer_id, L"Invalid password");
2076                         return;
2077                 }
2078
2079                 // Add player to auth manager
2080                 if(m_authmanager.exists(playername) == false)
2081                 {
2082                         derr_server<<DTIME<<"Server: adding player "<<playername
2083                                         <<" to auth manager"<<std::endl;
2084                         m_authmanager.add(playername);
2085                         m_authmanager.setPassword(playername, checkpwd);
2086                         m_authmanager.setPrivs(playername,
2087                                         stringToPrivs(g_settings.get("default_privs")));
2088                         m_authmanager.save();
2089                 }
2090
2091                 // Get player
2092                 Player *player = emergePlayer(playername, password, peer_id);
2093
2094
2095                 /*{
2096                         // DEBUG: Test serialization
2097                         std::ostringstream test_os;
2098                         player->serialize(test_os);
2099                         dstream<<"Player serialization test: \""<<test_os.str()
2100                                         <<"\""<<std::endl;
2101                         std::istringstream test_is(test_os.str());
2102                         player->deSerialize(test_is);
2103                 }*/
2104
2105                 // If failed, cancel
2106                 if(player == NULL)
2107                 {
2108                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2109                                         <<": failed to emerge player"<<std::endl;
2110                         return;
2111                 }
2112
2113                 /*
2114                 // If a client is already connected to the player, cancel
2115                 if(player->peer_id != 0)
2116                 {
2117                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2118                                         <<" tried to connect to "
2119                                         "an already connected player (peer_id="
2120                                         <<player->peer_id<<")"<<std::endl;
2121                         return;
2122                 }
2123                 // Set client of player
2124                 player->peer_id = peer_id;
2125                 */
2126
2127                 // Check if player doesn't exist
2128                 if(player == NULL)
2129                         throw con::InvalidIncomingDataException
2130                                 ("Server::ProcessData(): INIT: Player doesn't exist");
2131
2132                 /*// update name if it was supplied
2133                 if(datasize >= 20+3)
2134                 {
2135                         data[20+3-1] = 0;
2136                         player->updateName((const char*)&data[3]);
2137                 }*/
2138
2139                 /*
2140                         Answer with a TOCLIENT_INIT
2141                 */
2142                 {
2143                         SharedBuffer<u8> reply(2+1+6+8);
2144                         writeU16(&reply[0], TOCLIENT_INIT);
2145                         writeU8(&reply[2], deployed);
2146                         writeV3S16(&reply[2+1], floatToInt(player->getPosition()+v3f(0,BS/2,0), BS));
2147                         writeU64(&reply[2+1+6], m_env.getServerMap().getSeed());
2148
2149                         // Send as reliable
2150                         m_con.Send(peer_id, 0, reply, true);
2151                 }
2152
2153                 /*
2154                         Send complete position information
2155                 */
2156                 SendMovePlayer(player);
2157
2158                 return;
2159         }
2160
2161         if(command == TOSERVER_INIT2)
2162         {
2163                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT2 from "
2164                                 <<peer->id<<std::endl;
2165
2166
2167                 getClient(peer->id)->serialization_version
2168                                 = getClient(peer->id)->pending_serialization_version;
2169
2170                 /*
2171                         Send some initialization data
2172                 */
2173
2174                 // Send player info to all players
2175                 SendPlayerInfos();
2176
2177                 // Send inventory to player
2178                 UpdateCrafting(peer->id);
2179                 SendInventory(peer->id);
2180
2181                 // Send player items to all players
2182                 SendPlayerItems();
2183
2184                 // Send HP
2185                 {
2186                         Player *player = m_env.getPlayer(peer_id);
2187                         SendPlayerHP(player);
2188                 }
2189
2190                 // Send time of day
2191                 {
2192                         SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
2193                                         m_env.getTimeOfDay());
2194                         m_con.Send(peer->id, 0, data, true);
2195                 }
2196
2197                 // Send information about server to player in chat
2198                 SendChatMessage(peer_id, getStatusString());
2199
2200                 // Send information about joining in chat
2201                 {
2202                         std::wstring name = L"unknown";
2203                         Player *player = m_env.getPlayer(peer_id);
2204                         if(player != NULL)
2205                                 name = narrow_to_wide(player->getName());
2206
2207                         std::wstring message;
2208                         message += L"*** ";
2209                         message += name;
2210                         message += L" joined game";
2211                         BroadcastChatMessage(message);
2212                 }
2213
2214                 // Warnings about protocol version can be issued here
2215                 /*if(getClient(peer->id)->net_proto_version == 0)
2216                 {
2217                         SendChatMessage(peer_id, L"# Server: NOTE: YOUR CLIENT IS OLD AND DOES NOT WORK PROPERLY WITH THIS SERVER");
2218                 }*/
2219
2220                 return;
2221         }
2222
2223         if(peer_ser_ver == SER_FMT_VER_INVALID)
2224         {
2225                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: Peer"
2226                                 " serialization format invalid or not initialized."
2227                                 " Skipping incoming command="<<command<<std::endl;
2228                 return;
2229         }
2230
2231         Player *player = m_env.getPlayer(peer_id);
2232
2233         if(player == NULL){
2234                 derr_server<<"Server::ProcessData(): Cancelling: "
2235                                 "No player for peer_id="<<peer_id
2236                                 <<std::endl;
2237                 return;
2238         }
2239         if(command == TOSERVER_PLAYERPOS)
2240         {
2241                 if(datasize < 2+12+12+4+4)
2242                         return;
2243
2244                 u32 start = 0;
2245                 v3s32 ps = readV3S32(&data[start+2]);
2246                 v3s32 ss = readV3S32(&data[start+2+12]);
2247                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
2248                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
2249                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
2250                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
2251                 pitch = wrapDegrees(pitch);
2252                 yaw = wrapDegrees(yaw);
2253                 player->setPosition(position);
2254                 player->setSpeed(speed);
2255                 player->setPitch(pitch);
2256                 player->setYaw(yaw);
2257
2258                 /*dout_server<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
2259                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
2260                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
2261         }
2262         else if(command == TOSERVER_GOTBLOCKS)
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                                         ("GOTBLOCKS length is too short");
2281                         v3s16 p = readV3S16(&data[2+1+i*6]);
2282                         /*dstream<<"Server: GOTBLOCKS ("
2283                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2284                         RemoteClient *client = getClient(peer_id);
2285                         client->GotBlock(p);
2286                 }
2287         }
2288         else if(command == TOSERVER_DELETEDBLOCKS)
2289         {
2290                 if(datasize < 2+1)
2291                         return;
2292
2293                 /*
2294                         [0] u16 command
2295                         [2] u8 count
2296                         [3] v3s16 pos_0
2297                         [3+6] v3s16 pos_1
2298                         ...
2299                 */
2300
2301                 u16 count = data[2];
2302                 for(u16 i=0; i<count; i++)
2303                 {
2304                         if((s16)datasize < 2+1+(i+1)*6)
2305                                 throw con::InvalidIncomingDataException
2306                                         ("DELETEDBLOCKS length is too short");
2307                         v3s16 p = readV3S16(&data[2+1+i*6]);
2308                         /*dstream<<"Server: DELETEDBLOCKS ("
2309                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2310                         RemoteClient *client = getClient(peer_id);
2311                         client->SetBlockNotSent(p);
2312                 }
2313         }
2314         else if(command == TOSERVER_CLICK_OBJECT)
2315         {
2316                 if(datasize < 13)
2317                         return;
2318
2319                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2320                         return;
2321
2322                 /*
2323                         [0] u16 command
2324                         [2] u8 button (0=left, 1=right)
2325                         [3] v3s16 block
2326                         [9] s16 id
2327                         [11] u16 item
2328                 */
2329                 u8 button = readU8(&data[2]);
2330                 v3s16 p;
2331                 p.X = readS16(&data[3]);
2332                 p.Y = readS16(&data[5]);
2333                 p.Z = readS16(&data[7]);
2334                 s16 id = readS16(&data[9]);
2335                 //u16 item_i = readU16(&data[11]);
2336
2337                 MapBlock *block = NULL;
2338                 try
2339                 {
2340                         block = m_env.getMap().getBlockNoCreate(p);
2341                 }
2342                 catch(InvalidPositionException &e)
2343                 {
2344                         derr_server<<"CLICK_OBJECT block not found"<<std::endl;
2345                         return;
2346                 }
2347
2348                 MapBlockObject *obj = block->getObject(id);
2349
2350                 if(obj == NULL)
2351                 {
2352                         derr_server<<"CLICK_OBJECT object not found"<<std::endl;
2353                         return;
2354                 }
2355
2356                 //TODO: Check that object is reasonably close
2357
2358                 // Left click
2359                 if(button == 0)
2360                 {
2361                         InventoryList *ilist = player->inventory.getList("main");
2362                         if(g_settings.getBool("creative_mode") == false && ilist != NULL)
2363                         {
2364
2365                                 // Skip if inventory has no free space
2366                                 if(ilist->getUsedSlots() == ilist->getSize())
2367                                 {
2368                                         dout_server<<"Player inventory has no free space"<<std::endl;
2369                                         return;
2370                                 }
2371
2372                                 /*
2373                                         Create the inventory item
2374                                 */
2375                                 InventoryItem *item = NULL;
2376                                 // If it is an item-object, take the item from it
2377                                 if(obj->getTypeId() == MAPBLOCKOBJECT_TYPE_ITEM)
2378                                 {
2379                                         item = ((ItemObject*)obj)->createInventoryItem();
2380                                 }
2381                                 // Else create an item of the object
2382                                 else
2383                                 {
2384                                         item = new MapBlockObjectItem
2385                                                         (obj->getInventoryString());
2386                                 }
2387
2388                                 // Add to inventory and send inventory
2389                                 ilist->addItem(item);
2390                                 UpdateCrafting(player->peer_id);
2391                                 SendInventory(player->peer_id);
2392                         }
2393
2394                         // Remove from block
2395                         block->removeObject(id);
2396                 }
2397         }
2398         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
2399         {
2400                 if(datasize < 7)
2401                         return;
2402
2403                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2404                         return;
2405
2406                 /*
2407                         length: 7
2408                         [0] u16 command
2409                         [2] u8 button (0=left, 1=right)
2410                         [3] u16 id
2411                         [5] u16 item
2412                 */
2413                 u8 button = readU8(&data[2]);
2414                 u16 id = readS16(&data[3]);
2415                 u16 item_i = readU16(&data[11]);
2416
2417                 ServerActiveObject *obj = m_env.getActiveObject(id);
2418
2419                 if(obj == NULL)
2420                 {
2421                         derr_server<<"Server: CLICK_ACTIVEOBJECT: object not found"
2422                                         <<std::endl;
2423                         return;
2424                 }
2425
2426                 // Skip if object has been removed
2427                 if(obj->m_removed)
2428                         return;
2429
2430                 //TODO: Check that object is reasonably close
2431
2432                 // Left click, pick object up (usually)
2433                 if(button == 0)
2434                 {
2435                         /*
2436                                 Try creating inventory item
2437                         */
2438                         InventoryItem *item = obj->createPickedUpItem();
2439
2440                         if(item)
2441                         {
2442                                 InventoryList *ilist = player->inventory.getList("main");
2443                                 if(ilist != NULL)
2444                                 {
2445                                         if(g_settings.getBool("creative_mode") == false)
2446                                         {
2447                                                 // Skip if inventory has no free space
2448                                                 if(ilist->getUsedSlots() == ilist->getSize())
2449                                                 {
2450                                                         dout_server<<"Player inventory has no free space"<<std::endl;
2451                                                         return;
2452                                                 }
2453
2454                                                 // Add to inventory and send inventory
2455                                                 ilist->addItem(item);
2456                                                 UpdateCrafting(player->peer_id);
2457                                                 SendInventory(player->peer_id);
2458                                         }
2459
2460                                         // Remove object from environment
2461                                         obj->m_removed = true;
2462                                 }
2463                         }
2464                         else
2465                         {
2466                                 /*
2467                                         Item cannot be picked up. Punch it instead.
2468                                 */
2469
2470                                 ToolItem *titem = NULL;
2471                                 std::string toolname = "";
2472
2473                                 InventoryList *mlist = player->inventory.getList("main");
2474                                 if(mlist != NULL)
2475                                 {
2476                                         InventoryItem *item = mlist->getItem(item_i);
2477                                         if(item && (std::string)item->getName() == "ToolItem")
2478                                         {
2479                                                 titem = (ToolItem*)item;
2480                                                 toolname = titem->getToolName();
2481                                         }
2482                                 }
2483
2484                                 v3f playerpos = player->getPosition();
2485                                 v3f objpos = obj->getBasePosition();
2486                                 v3f dir = (objpos - playerpos).normalize();
2487
2488                                 u16 wear = obj->punch(toolname, dir);
2489
2490                                 if(titem)
2491                                 {
2492                                         bool weared_out = titem->addWear(wear);
2493                                         if(weared_out)
2494                                                 mlist->deleteItem(item_i);
2495                                         SendInventory(player->peer_id);
2496                                 }
2497                         }
2498                 }
2499                 // Right click, do something with object
2500                 if(button == 1)
2501                 {
2502                         // Track hp changes super-crappily
2503                         u16 oldhp = player->hp;
2504
2505                         // Do stuff
2506                         obj->rightClick(player);
2507
2508                         // Send back stuff
2509                         if(player->hp != oldhp)
2510                         {
2511                                 SendPlayerHP(player);
2512                         }
2513                 }
2514         }
2515         else if(command == TOSERVER_GROUND_ACTION)
2516         {
2517                 if(datasize < 17)
2518                         return;
2519                 /*
2520                         length: 17
2521                         [0] u16 command
2522                         [2] u8 action
2523                         [3] v3s16 nodepos_undersurface
2524                         [9] v3s16 nodepos_abovesurface
2525                         [15] u16 item
2526                         actions:
2527                         0: start digging
2528                         1: place block
2529                         2: stop digging (all parameters ignored)
2530                         3: digging completed
2531                 */
2532                 u8 action = readU8(&data[2]);
2533                 v3s16 p_under;
2534                 p_under.X = readS16(&data[3]);
2535                 p_under.Y = readS16(&data[5]);
2536                 p_under.Z = readS16(&data[7]);
2537                 v3s16 p_over;
2538                 p_over.X = readS16(&data[9]);
2539                 p_over.Y = readS16(&data[11]);
2540                 p_over.Z = readS16(&data[13]);
2541                 u16 item_i = readU16(&data[15]);
2542
2543                 //TODO: Check that target is reasonably close
2544
2545                 /*
2546                         0: start digging
2547                 */
2548                 if(action == 0)
2549                 {
2550                         /*
2551                                 NOTE: This can be used in the future to check if
2552                                 somebody is cheating, by checking the timing.
2553                         */
2554                 } // action == 0
2555
2556                 /*
2557                         2: stop digging
2558                 */
2559                 else if(action == 2)
2560                 {
2561 #if 0
2562                         RemoteClient *client = getClient(peer->id);
2563                         JMutexAutoLock digmutex(client->m_dig_mutex);
2564                         client->m_dig_tool_item = -1;
2565 #endif
2566                 }
2567
2568                 /*
2569                         3: Digging completed
2570                 */
2571                 else if(action == 3)
2572                 {
2573                         // Mandatory parameter; actually used for nothing
2574                         core::map<v3s16, MapBlock*> modified_blocks;
2575
2576                         content_t material = CONTENT_IGNORE;
2577                         u8 mineral = MINERAL_NONE;
2578
2579                         bool cannot_remove_node = false;
2580
2581                         try
2582                         {
2583                                 MapNode n = m_env.getMap().getNode(p_under);
2584                                 // Get mineral
2585                                 mineral = n.getMineral();
2586                                 // Get material at position
2587                                 material = n.getContent();
2588                                 // If not yet cancelled
2589                                 if(cannot_remove_node == false)
2590                                 {
2591                                         // If it's not diggable, do nothing
2592                                         if(content_diggable(material) == false)
2593                                         {
2594                                                 derr_server<<"Server: Not finishing digging: "
2595                                                                 <<"Node not diggable"
2596                                                                 <<std::endl;
2597                                                 cannot_remove_node = true;
2598                                         }
2599                                 }
2600                                 // If not yet cancelled
2601                                 if(cannot_remove_node == false)
2602                                 {
2603                                         // Get node metadata
2604                                         NodeMetadata *meta = m_env.getMap().getNodeMetadata(p_under);
2605                                         if(meta && meta->nodeRemovalDisabled() == true)
2606                                         {
2607                                                 derr_server<<"Server: Not finishing digging: "
2608                                                                 <<"Node metadata disables removal"
2609                                                                 <<std::endl;
2610                                                 cannot_remove_node = true;
2611                                         }
2612                                 }
2613                         }
2614                         catch(InvalidPositionException &e)
2615                         {
2616                                 derr_server<<"Server: Not finishing digging: Node not found."
2617                                                 <<" Adding block to emerge queue."
2618                                                 <<std::endl;
2619                                 m_emerge_queue.addBlock(peer_id,
2620                                                 getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2621                                 cannot_remove_node = true;
2622                         }
2623
2624                         // Make sure the player is allowed to do it
2625                         if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2626                         {
2627                                 dstream<<"Player "<<player->getName()<<" cannot remove node"
2628                                                 <<" because privileges are "<<getPlayerPrivs(player)
2629                                                 <<std::endl;
2630                                 cannot_remove_node = true;
2631                         }
2632
2633                         /*
2634                                 If node can't be removed, set block to be re-sent to
2635                                 client and quit.
2636                         */
2637                         if(cannot_remove_node)
2638                         {
2639                                 derr_server<<"Server: Not finishing digging."<<std::endl;
2640
2641                                 // Client probably has wrong data.
2642                                 // Set block not sent, so that client will get
2643                                 // a valid one.
2644                                 dstream<<"Client "<<peer_id<<" tried to dig "
2645                                                 <<"node; but node cannot be removed."
2646                                                 <<" setting MapBlock not sent."<<std::endl;
2647                                 RemoteClient *client = getClient(peer_id);
2648                                 v3s16 blockpos = getNodeBlockPos(p_under);
2649                                 client->SetBlockNotSent(blockpos);
2650
2651                                 return;
2652                         }
2653
2654                         /*
2655                                 Send the removal to all close-by players.
2656                                 - If other player is close, send REMOVENODE
2657                                 - Otherwise set blocks not sent
2658                         */
2659                         core::list<u16> far_players;
2660                         sendRemoveNode(p_under, peer_id, &far_players, 30);
2661
2662                         /*
2663                                 Update and send inventory
2664                         */
2665
2666                         if(g_settings.getBool("creative_mode") == false)
2667                         {
2668                                 /*
2669                                         Wear out tool
2670                                 */
2671                                 InventoryList *mlist = player->inventory.getList("main");
2672                                 if(mlist != NULL)
2673                                 {
2674                                         InventoryItem *item = mlist->getItem(item_i);
2675                                         if(item && (std::string)item->getName() == "ToolItem")
2676                                         {
2677                                                 ToolItem *titem = (ToolItem*)item;
2678                                                 std::string toolname = titem->getToolName();
2679
2680                                                 // Get digging properties for material and tool
2681                                                 DiggingProperties prop =
2682                                                                 getDiggingProperties(material, toolname);
2683
2684                                                 if(prop.diggable == false)
2685                                                 {
2686                                                         derr_server<<"Server: WARNING: Player digged"
2687                                                                         <<" with impossible material + tool"
2688                                                                         <<" combination"<<std::endl;
2689                                                 }
2690
2691                                                 bool weared_out = titem->addWear(prop.wear);
2692
2693                                                 if(weared_out)
2694                                                 {
2695                                                         mlist->deleteItem(item_i);
2696                                                 }
2697                                         }
2698                                 }
2699
2700                                 /*
2701                                         Add dug item to inventory
2702                                 */
2703
2704                                 InventoryItem *item = NULL;
2705
2706                                 if(mineral != MINERAL_NONE)
2707                                         item = getDiggedMineralItem(mineral);
2708
2709                                 // If not mineral
2710                                 if(item == NULL)
2711                                 {
2712                                         std::string &dug_s = content_features(material).dug_item;
2713                                         if(dug_s != "")
2714                                         {
2715                                                 std::istringstream is(dug_s, std::ios::binary);
2716                                                 item = InventoryItem::deSerialize(is);
2717                                         }
2718                                 }
2719
2720                                 if(item != NULL)
2721                                 {
2722                                         // Add a item to inventory
2723                                         player->inventory.addItem("main", item);
2724
2725                                         // Send inventory
2726                                         UpdateCrafting(player->peer_id);
2727                                         SendInventory(player->peer_id);
2728                                 }
2729                         }
2730
2731                         /*
2732                                 Remove the node
2733                                 (this takes some time so it is done after the quick stuff)
2734                         */
2735                         {
2736                                 MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2737
2738                                 m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
2739                         }
2740                         /*
2741                                 Set blocks not sent to far players
2742                         */
2743                         for(core::list<u16>::Iterator
2744                                         i = far_players.begin();
2745                                         i != far_players.end(); i++)
2746                         {
2747                                 u16 peer_id = *i;
2748                                 RemoteClient *client = getClient(peer_id);
2749                                 if(client==NULL)
2750                                         continue;
2751                                 client->SetBlocksNotSent(modified_blocks);
2752                         }
2753                 }
2754
2755                 /*
2756                         1: place block
2757                 */
2758                 else if(action == 1)
2759                 {
2760
2761                         InventoryList *ilist = player->inventory.getList("main");
2762                         if(ilist == NULL)
2763                                 return;
2764
2765                         // Get item
2766                         InventoryItem *item = ilist->getItem(item_i);
2767
2768                         // If there is no item, it is not possible to add it anywhere
2769                         if(item == NULL)
2770                                 return;
2771
2772                         /*
2773                                 Handle material items
2774                         */
2775                         if(std::string("MaterialItem") == item->getName())
2776                         {
2777                                 try{
2778                                         // Don't add a node if this is not a free space
2779                                         MapNode n2 = m_env.getMap().getNode(p_over);
2780                                         bool no_enough_privs =
2781                                                         ((getPlayerPrivs(player) & PRIV_BUILD)==0);
2782                                         if(no_enough_privs)
2783                                                 dstream<<"Player "<<player->getName()<<" cannot add node"
2784                                                         <<" because privileges are "<<getPlayerPrivs(player)
2785                                                         <<std::endl;
2786
2787                                         if(content_features(n2).buildable_to == false
2788                                                 || no_enough_privs)
2789                                         {
2790                                                 // Client probably has wrong data.
2791                                                 // Set block not sent, so that client will get
2792                                                 // a valid one.
2793                                                 dstream<<"Client "<<peer_id<<" tried to place"
2794                                                                 <<" node in invalid position; setting"
2795                                                                 <<" MapBlock not sent."<<std::endl;
2796                                                 RemoteClient *client = getClient(peer_id);
2797                                                 v3s16 blockpos = getNodeBlockPos(p_over);
2798                                                 client->SetBlockNotSent(blockpos);
2799                                                 return;
2800                                         }
2801                                 }
2802                                 catch(InvalidPositionException &e)
2803                                 {
2804                                         derr_server<<"Server: Ignoring ADDNODE: Node not found"
2805                                                         <<" Adding block to emerge queue."
2806                                                         <<std::endl;
2807                                         m_emerge_queue.addBlock(peer_id,
2808                                                         getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2809                                         return;
2810                                 }
2811
2812                                 // Reset build time counter
2813                                 getClient(peer->id)->m_time_from_building = 0.0;
2814
2815                                 // Create node data
2816                                 MaterialItem *mitem = (MaterialItem*)item;
2817                                 MapNode n;
2818                                 n.setContent(mitem->getMaterial());
2819
2820                                 // Calculate direction for wall mounted stuff
2821                                 if(content_features(n).wall_mounted)
2822                                         n.param2 = packDir(p_under - p_over);
2823
2824                                 // Calculate the direction for furnaces and chests and stuff
2825                                 if(content_features(n).param_type == CPT_FACEDIR_SIMPLE)
2826                                 {
2827                                         v3f playerpos = player->getPosition();
2828                                         v3f blockpos = intToFloat(p_over, BS) - playerpos;
2829                                         blockpos = blockpos.normalize();
2830                                         n.param1 = 0;
2831                                         if (fabs(blockpos.X) > fabs(blockpos.Z)) {
2832                                                 if (blockpos.X < 0)
2833                                                         n.param1 = 3;
2834                                                 else
2835                                                         n.param1 = 1;
2836                                         } else {
2837                                                 if (blockpos.Z < 0)
2838                                                         n.param1 = 2;
2839                                                 else
2840                                                         n.param1 = 0;
2841                                         }
2842                                 }
2843
2844                                 /*
2845                                         Send to all close-by players
2846                                 */
2847                                 core::list<u16> far_players;
2848                                 sendAddNode(p_over, n, 0, &far_players, 30);
2849
2850                                 /*
2851                                         Handle inventory
2852                                 */
2853                                 InventoryList *ilist = player->inventory.getList("main");
2854                                 if(g_settings.getBool("creative_mode") == false && ilist)
2855                                 {
2856                                         // Remove from inventory and send inventory
2857                                         if(mitem->getCount() == 1)
2858                                                 ilist->deleteItem(item_i);
2859                                         else
2860                                                 mitem->remove(1);
2861                                         // Send inventory
2862                                         UpdateCrafting(peer_id);
2863                                         SendInventory(peer_id);
2864                                 }
2865
2866                                 /*
2867                                         Add node.
2868
2869                                         This takes some time so it is done after the quick stuff
2870                                 */
2871                                 core::map<v3s16, MapBlock*> modified_blocks;
2872                                 {
2873                                         MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2874
2875                                         m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
2876                                 }
2877                                 /*
2878                                         Set blocks not sent to far players
2879                                 */
2880                                 for(core::list<u16>::Iterator
2881                                                 i = far_players.begin();
2882                                                 i != far_players.end(); i++)
2883                                 {
2884                                         u16 peer_id = *i;
2885                                         RemoteClient *client = getClient(peer_id);
2886                                         if(client==NULL)
2887                                                 continue;
2888                                         client->SetBlocksNotSent(modified_blocks);
2889                                 }
2890
2891                                 /*
2892                                         Calculate special events
2893                                 */
2894
2895                                 /*if(n.d == CONTENT_MESE)
2896                                 {
2897                                         u32 count = 0;
2898                                         for(s16 z=-1; z<=1; z++)
2899                                         for(s16 y=-1; y<=1; y++)
2900                                         for(s16 x=-1; x<=1; x++)
2901                                         {
2902
2903                                         }
2904                                 }*/
2905                         }
2906                         /*
2907                                 Place other item (not a block)
2908                         */
2909                         else
2910                         {
2911                                 v3s16 blockpos = getNodeBlockPos(p_over);
2912
2913                                 /*
2914                                         Check that the block is loaded so that the item
2915                                         can properly be added to the static list too
2916                                 */
2917                                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
2918                                 if(block==NULL)
2919                                 {
2920                                         derr_server<<"Error while placing object: "
2921                                                         "block not found"<<std::endl;
2922                                         return;
2923                                 }
2924
2925                                 dout_server<<"Placing a miscellaneous item on map"
2926                                                 <<std::endl;
2927
2928                                 // Calculate a position for it
2929                                 v3f pos = intToFloat(p_over, BS);
2930                                 //pos.Y -= BS*0.45;
2931                                 pos.Y -= BS*0.25; // let it drop a bit
2932                                 // Randomize a bit
2933                                 pos.X += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2934                                 pos.Z += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2935
2936                                 /*
2937                                         Create the object
2938                                 */
2939                                 ServerActiveObject *obj = item->createSAO(&m_env, 0, pos);
2940
2941                                 if(obj == NULL)
2942                                 {
2943                                         derr_server<<"WARNING: item resulted in NULL object, "
2944                                                         <<"not placing onto map"
2945                                                         <<std::endl;
2946                                 }
2947                                 else
2948                                 {
2949                                         // Add the object to the environment
2950                                         m_env.addActiveObject(obj);
2951
2952                                         dout_server<<"Placed object"<<std::endl;
2953
2954                                         if(g_settings.getBool("creative_mode") == false)
2955                                         {
2956                                                 // Delete the right amount of items from the slot
2957                                                 u16 dropcount = item->getDropCount();
2958
2959                                                 // Delete item if all gone
2960                                                 if(item->getCount() <= dropcount)
2961                                                 {
2962                                                         if(item->getCount() < dropcount)
2963                                                                 dstream<<"WARNING: Server: dropped more items"
2964                                                                                 <<" than the slot contains"<<std::endl;
2965
2966                                                         InventoryList *ilist = player->inventory.getList("main");
2967                                                         if(ilist)
2968                                                                 // Remove from inventory and send inventory
2969                                                                 ilist->deleteItem(item_i);
2970                                                 }
2971                                                 // Else decrement it
2972                                                 else
2973                                                         item->remove(dropcount);
2974
2975                                                 // Send inventory
2976                                                 UpdateCrafting(peer_id);
2977                                                 SendInventory(peer_id);
2978                                         }
2979                                 }
2980                         }
2981
2982                 } // action == 1
2983
2984                 /*
2985                         Catch invalid actions
2986                 */
2987                 else
2988                 {
2989                         derr_server<<"WARNING: Server: Invalid action "
2990                                         <<action<<std::endl;
2991                 }
2992         }
2993 #if 0
2994         else if(command == TOSERVER_RELEASE)
2995         {
2996                 if(datasize < 3)
2997                         return;
2998                 /*
2999                         length: 3
3000                         [0] u16 command
3001                         [2] u8 button
3002                 */
3003                 dstream<<"TOSERVER_RELEASE ignored"<<std::endl;
3004         }
3005 #endif
3006         else if(command == TOSERVER_SIGNTEXT)
3007         {
3008                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3009                         return;
3010                 /*
3011                         u16 command
3012                         v3s16 blockpos
3013                         s16 id
3014                         u16 textlen
3015                         textdata
3016                 */
3017                 std::string datastring((char*)&data[2], datasize-2);
3018                 std::istringstream is(datastring, std::ios_base::binary);
3019                 u8 buf[6];
3020                 // Read stuff
3021                 is.read((char*)buf, 6);
3022                 v3s16 blockpos = readV3S16(buf);
3023                 is.read((char*)buf, 2);
3024                 s16 id = readS16(buf);
3025                 is.read((char*)buf, 2);
3026                 u16 textlen = readU16(buf);
3027                 std::string text;
3028                 for(u16 i=0; i<textlen; i++)
3029                 {
3030                         is.read((char*)buf, 1);
3031                         text += (char)buf[0];
3032                 }
3033
3034                 MapBlock *block = NULL;
3035                 try
3036                 {
3037                         block = m_env.getMap().getBlockNoCreate(blockpos);
3038                 }
3039                 catch(InvalidPositionException &e)
3040                 {
3041                         derr_server<<"Error while setting sign text: "
3042                                         "block not found"<<std::endl;
3043                         return;
3044                 }
3045
3046                 MapBlockObject *obj = block->getObject(id);
3047                 if(obj == NULL)
3048                 {
3049                         derr_server<<"Error while setting sign text: "
3050                                         "object not found"<<std::endl;
3051                         return;
3052                 }
3053
3054                 if(obj->getTypeId() != MAPBLOCKOBJECT_TYPE_SIGN)
3055                 {
3056                         derr_server<<"Error while setting sign text: "
3057                                         "object is not a sign"<<std::endl;
3058                         return;
3059                 }
3060
3061                 ((SignObject*)obj)->setText(text);
3062
3063                 obj->getBlock()->setChangedFlag();
3064         }
3065         else if(command == TOSERVER_SIGNNODETEXT)
3066         {
3067                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3068                         return;
3069                 /*
3070                         u16 command
3071                         v3s16 p
3072                         u16 textlen
3073                         textdata
3074                 */
3075                 std::string datastring((char*)&data[2], datasize-2);
3076                 std::istringstream is(datastring, std::ios_base::binary);
3077                 u8 buf[6];
3078                 // Read stuff
3079                 is.read((char*)buf, 6);
3080                 v3s16 p = readV3S16(buf);
3081                 is.read((char*)buf, 2);
3082                 u16 textlen = readU16(buf);
3083                 std::string text;
3084                 for(u16 i=0; i<textlen; i++)
3085                 {
3086                         is.read((char*)buf, 1);
3087                         text += (char)buf[0];
3088                 }
3089
3090                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3091                 if(!meta)
3092                         return;
3093                 if(meta->typeId() != CONTENT_SIGN_WALL)
3094                         return;
3095                 SignNodeMetadata *signmeta = (SignNodeMetadata*)meta;
3096                 signmeta->setText(text);
3097
3098                 v3s16 blockpos = getNodeBlockPos(p);
3099                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
3100                 if(block)
3101                 {
3102                         block->setChangedFlag();
3103                 }
3104
3105                 for(core::map<u16, RemoteClient*>::Iterator
3106                         i = m_clients.getIterator();
3107                         i.atEnd()==false; i++)
3108                 {
3109                         RemoteClient *client = i.getNode()->getValue();
3110                         client->SetBlockNotSent(blockpos);
3111                 }
3112         }
3113         else if(command == TOSERVER_INVENTORY_ACTION)
3114         {
3115                 /*// Ignore inventory changes if in creative mode
3116                 if(g_settings.getBool("creative_mode") == true)
3117                 {
3118                         dstream<<"TOSERVER_INVENTORY_ACTION: ignoring in creative mode"
3119                                         <<std::endl;
3120                         return;
3121                 }*/
3122                 // Strip command and create a stream
3123                 std::string datastring((char*)&data[2], datasize-2);
3124                 dstream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
3125                 std::istringstream is(datastring, std::ios_base::binary);
3126                 // Create an action
3127                 InventoryAction *a = InventoryAction::deSerialize(is);
3128                 if(a != NULL)
3129                 {
3130                         // Create context
3131                         InventoryContext c;
3132                         c.current_player = player;
3133
3134                         /*
3135                                 Handle craftresult specially if not in creative mode
3136                         */
3137                         bool disable_action = false;
3138                         if(a->getType() == IACTION_MOVE
3139                                         && g_settings.getBool("creative_mode") == false)
3140                         {
3141                                 IMoveAction *ma = (IMoveAction*)a;
3142                                 if(ma->to_inv == "current_player" &&
3143                                                 ma->from_inv == "current_player")
3144                                 {
3145                                         InventoryList *rlist = player->inventory.getList("craftresult");
3146                                         assert(rlist);
3147                                         InventoryList *clist = player->inventory.getList("craft");
3148                                         assert(clist);
3149                                         InventoryList *mlist = player->inventory.getList("main");
3150                                         assert(mlist);
3151                                         /*
3152                                                 Craftresult is no longer preview if something
3153                                                 is moved into it
3154                                         */
3155                                         if(ma->to_list == "craftresult"
3156                                                         && ma->from_list != "craftresult")
3157                                         {
3158                                                 // If it currently is a preview, remove
3159                                                 // its contents
3160                                                 if(player->craftresult_is_preview)
3161                                                 {
3162                                                         rlist->deleteItem(0);
3163                                                 }
3164                                                 player->craftresult_is_preview = false;
3165                                         }
3166                                         /*
3167                                                 Crafting takes place if this condition is true.
3168                                         */
3169                                         if(player->craftresult_is_preview &&
3170                                                         ma->from_list == "craftresult")
3171                                         {
3172                                                 player->craftresult_is_preview = false;
3173                                                 clist->decrementMaterials(1);
3174                                         }
3175                                         /*
3176                                                 If the craftresult is placed on itself, move it to
3177                                                 main inventory instead of doing the action
3178                                         */
3179                                         if(ma->to_list == "craftresult"
3180                                                         && ma->from_list == "craftresult")
3181                                         {
3182                                                 disable_action = true;
3183
3184                                                 InventoryItem *item1 = rlist->changeItem(0, NULL);
3185                                                 mlist->addItem(item1);
3186                                         }
3187                                 }
3188                         }
3189
3190                         if(disable_action == false)
3191                         {
3192                                 // Feed action to player inventory
3193                                 a->apply(&c, this);
3194                                 // Eat the action
3195                                 delete a;
3196                         }
3197                         else
3198                         {
3199                                 // Send inventory
3200                                 UpdateCrafting(player->peer_id);
3201                                 SendInventory(player->peer_id);
3202                         }
3203                 }
3204                 else
3205                 {
3206                         dstream<<"TOSERVER_INVENTORY_ACTION: "
3207                                         <<"InventoryAction::deSerialize() returned NULL"
3208                                         <<std::endl;
3209                 }
3210         }
3211         else if(command == TOSERVER_CHAT_MESSAGE)
3212         {
3213                 /*
3214                         u16 command
3215                         u16 length
3216                         wstring message
3217                 */
3218                 u8 buf[6];
3219                 std::string datastring((char*)&data[2], datasize-2);
3220                 std::istringstream is(datastring, std::ios_base::binary);
3221
3222                 // Read stuff
3223                 is.read((char*)buf, 2);
3224                 u16 len = readU16(buf);
3225
3226                 std::wstring message;
3227                 for(u16 i=0; i<len; i++)
3228                 {
3229                         is.read((char*)buf, 2);
3230                         message += (wchar_t)readU16(buf);
3231                 }
3232
3233                 // Get player name of this client
3234                 std::wstring name = narrow_to_wide(player->getName());
3235
3236                 // Line to send to players
3237                 std::wstring line;
3238                 // Whether to send to the player that sent the line
3239                 bool send_to_sender = false;
3240                 // Whether to send to other players
3241                 bool send_to_others = false;
3242
3243                 // Local player gets all privileges regardless of
3244                 // what's set on their account.
3245                 u64 privs = getPlayerPrivs(player);
3246
3247                 // Parse commands
3248                 if(message[0] == L'/')
3249                 {
3250                         line += L"Server: ";
3251
3252                         size_t strip_size = 1;
3253                         if (message[1] == L'#') // support old-style commans
3254                                 ++strip_size;
3255                         message = message.substr(strip_size);
3256
3257                         WStrfnd f1(message);
3258                         f1.next(L" "); // Skip over /#whatever
3259                         std::wstring paramstring = f1.next(L"");
3260
3261                         ServerCommandContext *ctx = new ServerCommandContext(
3262                                 str_split(message, L' '),
3263                                 paramstring,
3264                                 this,
3265                                 &m_env,
3266                                 player,
3267                                 privs);
3268
3269                         line += processServerCommand(ctx);
3270                         send_to_sender = ctx->flags & SEND_TO_SENDER;
3271                         send_to_others = ctx->flags & SEND_TO_OTHERS;
3272                         delete ctx;
3273
3274                 }
3275                 else
3276                 {
3277                         if(privs & PRIV_SHOUT)
3278                         {
3279                                 line += L"<";
3280                                 line += name;
3281                                 line += L"> ";
3282                                 line += message;
3283                                 send_to_others = true;
3284                         }
3285                         else
3286                         {
3287                                 line += L"Server: You are not allowed to shout";
3288                                 send_to_sender = true;
3289                         }
3290                 }
3291
3292                 if(line != L"")
3293                 {
3294                         dstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
3295
3296                         /*
3297                                 Send the message to clients
3298                         */
3299                         for(core::map<u16, RemoteClient*>::Iterator
3300                                 i = m_clients.getIterator();
3301                                 i.atEnd() == false; i++)
3302                         {
3303                                 // Get client and check that it is valid
3304                                 RemoteClient *client = i.getNode()->getValue();
3305                                 assert(client->peer_id == i.getNode()->getKey());
3306                                 if(client->serialization_version == SER_FMT_VER_INVALID)
3307                                         continue;
3308
3309                                 // Filter recipient
3310                                 bool sender_selected = (peer_id == client->peer_id);
3311                                 if(sender_selected == true && send_to_sender == false)
3312                                         continue;
3313                                 if(sender_selected == false && send_to_others == false)
3314                                         continue;
3315
3316                                 SendChatMessage(client->peer_id, line);
3317                         }
3318                 }
3319         }
3320         else if(command == TOSERVER_DAMAGE)
3321         {
3322                 if(g_settings.getBool("enable_damage"))
3323                 {
3324                         std::string datastring((char*)&data[2], datasize-2);
3325                         std::istringstream is(datastring, std::ios_base::binary);
3326                         u8 damage = readU8(is);
3327                         if(player->hp > damage)
3328                         {
3329                                 player->hp -= damage;
3330                         }
3331                         else
3332                         {
3333                                 player->hp = 0;
3334
3335                                 dstream<<"TODO: Server: TOSERVER_HP_DECREMENT: Player dies"
3336                                                 <<std::endl;
3337
3338                                 v3f pos = findSpawnPos(m_env.getServerMap());
3339                                 player->setPosition(pos);
3340                                 player->hp = 20;
3341                                 SendMovePlayer(player);
3342                                 SendPlayerHP(player);
3343
3344                                 //TODO: Throw items around
3345                         }
3346                 }
3347
3348                 SendPlayerHP(player);
3349         }
3350         else if(command == TOSERVER_PASSWORD)
3351         {
3352                 /*
3353                         [0] u16 TOSERVER_PASSWORD
3354                         [2] u8[28] old password
3355                         [30] u8[28] new password
3356                 */
3357
3358                 if(datasize != 2+PASSWORD_SIZE*2)
3359                         return;
3360                 /*char password[PASSWORD_SIZE];
3361                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3362                         password[i] = data[2+i];
3363                 password[PASSWORD_SIZE-1] = 0;*/
3364                 std::string oldpwd;
3365                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3366                 {
3367                         char c = data[2+i];
3368                         if(c == 0)
3369                                 break;
3370                         oldpwd += c;
3371                 }
3372                 std::string newpwd;
3373                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3374                 {
3375                         char c = data[2+PASSWORD_SIZE+i];
3376                         if(c == 0)
3377                                 break;
3378                         newpwd += c;
3379                 }
3380
3381                 dstream<<"Server: Client requests a password change from "
3382                                 <<"'"<<oldpwd<<"' to '"<<newpwd<<"'"<<std::endl;
3383
3384                 std::string playername = player->getName();
3385
3386                 if(m_authmanager.exists(playername) == false)
3387                 {
3388                         dstream<<"Server: playername not found in authmanager"<<std::endl;
3389                         // Wrong old password supplied!!
3390                         SendChatMessage(peer_id, L"playername not found in authmanager");
3391                         return;
3392                 }
3393
3394                 std::string checkpwd = m_authmanager.getPassword(playername);
3395
3396                 if(oldpwd != checkpwd)
3397                 {
3398                         dstream<<"Server: invalid old password"<<std::endl;
3399                         // Wrong old password supplied!!
3400                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
3401                         return;
3402                 }
3403
3404                 m_authmanager.setPassword(playername, newpwd);
3405
3406                 dstream<<"Server: password change successful for "<<playername
3407                                 <<std::endl;
3408                 SendChatMessage(peer_id, L"Password change successful");
3409         }
3410         else if (command == TOSERVER_PLAYERITEM)
3411         {
3412                 if (datasize < 2+2)
3413                         return;
3414
3415                 u16 item = readU16(&data[2]);
3416                 player->wieldItem(item);
3417                 SendWieldedItem(player);
3418         }
3419         else
3420         {
3421                 derr_server<<"WARNING: Server::ProcessData(): Ignoring "
3422                                 "unknown command "<<command<<std::endl;
3423         }
3424
3425         } //try
3426         catch(SendFailedException &e)
3427         {
3428                 derr_server<<"Server::ProcessData(): SendFailedException: "
3429                                 <<"what="<<e.what()
3430                                 <<std::endl;
3431         }
3432 }
3433
3434 void Server::onMapEditEvent(MapEditEvent *event)
3435 {
3436         //dstream<<"Server::onMapEditEvent()"<<std::endl;
3437         if(m_ignore_map_edit_events)
3438                 return;
3439         MapEditEvent *e = event->clone();
3440         m_unsent_map_edit_queue.push_back(e);
3441 }
3442
3443 Inventory* Server::getInventory(InventoryContext *c, std::string id)
3444 {
3445         if(id == "current_player")
3446         {
3447                 assert(c->current_player);
3448                 return &(c->current_player->inventory);
3449         }
3450
3451         Strfnd fn(id);
3452         std::string id0 = fn.next(":");
3453
3454         if(id0 == "nodemeta")
3455         {
3456                 v3s16 p;
3457                 p.X = stoi(fn.next(","));
3458                 p.Y = stoi(fn.next(","));
3459                 p.Z = stoi(fn.next(","));
3460                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3461                 if(meta)
3462                         return meta->getInventory();
3463                 dstream<<"nodemeta at ("<<p.X<<","<<p.Y<<","<<p.Z<<"): "
3464                                 <<"no metadata found"<<std::endl;
3465                 return NULL;
3466         }
3467
3468         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3469         return NULL;
3470 }
3471 void Server::inventoryModified(InventoryContext *c, std::string id)
3472 {
3473         if(id == "current_player")
3474         {
3475                 assert(c->current_player);
3476                 // Send inventory
3477                 UpdateCrafting(c->current_player->peer_id);
3478                 SendInventory(c->current_player->peer_id);
3479                 return;
3480         }
3481
3482         Strfnd fn(id);
3483         std::string id0 = fn.next(":");
3484
3485         if(id0 == "nodemeta")
3486         {
3487                 v3s16 p;
3488                 p.X = stoi(fn.next(","));
3489                 p.Y = stoi(fn.next(","));
3490                 p.Z = stoi(fn.next(","));
3491                 v3s16 blockpos = getNodeBlockPos(p);
3492
3493                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3494                 if(meta)
3495                         meta->inventoryModified();
3496
3497                 for(core::map<u16, RemoteClient*>::Iterator
3498                         i = m_clients.getIterator();
3499                         i.atEnd()==false; i++)
3500                 {
3501                         RemoteClient *client = i.getNode()->getValue();
3502                         client->SetBlockNotSent(blockpos);
3503                 }
3504
3505                 return;
3506         }
3507
3508         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3509 }
3510
3511 core::list<PlayerInfo> Server::getPlayerInfo()
3512 {
3513         DSTACK(__FUNCTION_NAME);
3514         JMutexAutoLock envlock(m_env_mutex);
3515         JMutexAutoLock conlock(m_con_mutex);
3516
3517         core::list<PlayerInfo> list;
3518
3519         core::list<Player*> players = m_env.getPlayers();
3520
3521         core::list<Player*>::Iterator i;
3522         for(i = players.begin();
3523                         i != players.end(); i++)
3524         {
3525                 PlayerInfo info;
3526
3527                 Player *player = *i;
3528
3529                 try{
3530                         con::Peer *peer = m_con.GetPeer(player->peer_id);
3531                         // Copy info from peer to info struct
3532                         info.id = peer->id;
3533                         info.address = peer->address;
3534                         info.avg_rtt = peer->avg_rtt;
3535                 }
3536                 catch(con::PeerNotFoundException &e)
3537                 {
3538                         // Set dummy peer info
3539                         info.id = 0;
3540                         info.address = Address(0,0,0,0,0);
3541                         info.avg_rtt = 0.0;
3542                 }
3543
3544                 snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
3545                 info.position = player->getPosition();
3546
3547                 list.push_back(info);
3548         }
3549
3550         return list;
3551 }
3552
3553
3554 void Server::peerAdded(con::Peer *peer)
3555 {
3556         DSTACK(__FUNCTION_NAME);
3557         dout_server<<"Server::peerAdded(): peer->id="
3558                         <<peer->id<<std::endl;
3559
3560         PeerChange c;
3561         c.type = PEER_ADDED;
3562         c.peer_id = peer->id;
3563         c.timeout = false;
3564         m_peer_change_queue.push_back(c);
3565 }
3566
3567 void Server::deletingPeer(con::Peer *peer, bool timeout)
3568 {
3569         DSTACK(__FUNCTION_NAME);
3570         dout_server<<"Server::deletingPeer(): peer->id="
3571                         <<peer->id<<", timeout="<<timeout<<std::endl;
3572
3573         PeerChange c;
3574         c.type = PEER_REMOVED;
3575         c.peer_id = peer->id;
3576         c.timeout = timeout;
3577         m_peer_change_queue.push_back(c);
3578 }
3579
3580 /*
3581         Static send methods
3582 */
3583
3584 void Server::SendHP(con::Connection &con, u16 peer_id, u8 hp)
3585 {
3586         DSTACK(__FUNCTION_NAME);
3587         std::ostringstream os(std::ios_base::binary);
3588
3589         writeU16(os, TOCLIENT_HP);
3590         writeU8(os, hp);
3591
3592         // Make data buffer
3593         std::string s = os.str();
3594         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3595         // Send as reliable
3596         con.Send(peer_id, 0, data, true);
3597 }
3598
3599 void Server::SendAccessDenied(con::Connection &con, u16 peer_id,
3600                 const std::wstring &reason)
3601 {
3602         DSTACK(__FUNCTION_NAME);
3603         std::ostringstream os(std::ios_base::binary);
3604
3605         writeU16(os, TOCLIENT_ACCESS_DENIED);
3606         os<<serializeWideString(reason);
3607
3608         // Make data buffer
3609         std::string s = os.str();
3610         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3611         // Send as reliable
3612         con.Send(peer_id, 0, data, true);
3613 }
3614
3615 /*
3616         Non-static send methods
3617 */
3618
3619 void Server::SendObjectData(float dtime)
3620 {
3621         DSTACK(__FUNCTION_NAME);
3622
3623         core::map<v3s16, bool> stepped_blocks;
3624
3625         for(core::map<u16, RemoteClient*>::Iterator
3626                 i = m_clients.getIterator();
3627                 i.atEnd() == false; i++)
3628         {
3629                 u16 peer_id = i.getNode()->getKey();
3630                 RemoteClient *client = i.getNode()->getValue();
3631                 assert(client->peer_id == peer_id);
3632
3633                 if(client->serialization_version == SER_FMT_VER_INVALID)
3634                         continue;
3635
3636                 client->SendObjectData(this, dtime, stepped_blocks);
3637         }
3638 }
3639
3640 void Server::SendPlayerInfos()
3641 {
3642         DSTACK(__FUNCTION_NAME);
3643
3644         //JMutexAutoLock envlock(m_env_mutex);
3645
3646         // Get connected players
3647         core::list<Player*> players = m_env.getPlayers(true);
3648
3649         u32 player_count = players.getSize();
3650         u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
3651
3652         SharedBuffer<u8> data(datasize);
3653         writeU16(&data[0], TOCLIENT_PLAYERINFO);
3654
3655         u32 start = 2;
3656         core::list<Player*>::Iterator i;
3657         for(i = players.begin();
3658                         i != players.end(); i++)
3659         {
3660                 Player *player = *i;
3661
3662                 /*dstream<<"Server sending player info for player with "
3663                                 "peer_id="<<player->peer_id<<std::endl;*/
3664
3665                 writeU16(&data[start], player->peer_id);
3666                 memset((char*)&data[start+2], 0, PLAYERNAME_SIZE);
3667                 snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
3668                 start += 2+PLAYERNAME_SIZE;
3669         }
3670
3671         //JMutexAutoLock conlock(m_con_mutex);
3672
3673         // Send as reliable
3674         m_con.SendToAll(0, data, true);
3675 }
3676
3677 void Server::SendInventory(u16 peer_id)
3678 {
3679         DSTACK(__FUNCTION_NAME);
3680
3681         Player* player = m_env.getPlayer(peer_id);
3682         assert(player);
3683
3684         /*
3685                 Serialize it
3686         */
3687
3688         std::ostringstream os;
3689         //os.imbue(std::locale("C"));
3690
3691         player->inventory.serialize(os);
3692
3693         std::string s = os.str();
3694
3695         SharedBuffer<u8> data(s.size()+2);
3696         writeU16(&data[0], TOCLIENT_INVENTORY);
3697         memcpy(&data[2], s.c_str(), s.size());
3698
3699         // Send as reliable
3700         m_con.Send(peer_id, 0, data, true);
3701 }
3702
3703 std::string getWieldedItemString(const Player *player)
3704 {
3705         const InventoryItem *item = player->getWieldItem();
3706         if (item == NULL)
3707                 return std::string("");
3708         std::ostringstream os(std::ios_base::binary);
3709         item->serialize(os);
3710         return os.str();
3711 }
3712
3713 void Server::SendWieldedItem(const Player* player)
3714 {
3715         DSTACK(__FUNCTION_NAME);
3716
3717         assert(player);
3718
3719         std::ostringstream os(std::ios_base::binary);
3720
3721         writeU16(os, TOCLIENT_PLAYERITEM);
3722         writeU16(os, 1);
3723         writeU16(os, player->peer_id);
3724         os<<serializeString(getWieldedItemString(player));
3725
3726         // Make data buffer
3727         std::string s = os.str();
3728         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3729
3730         m_con.SendToAll(0, data, true);
3731 }
3732
3733 void Server::SendPlayerItems()
3734 {
3735         DSTACK(__FUNCTION_NAME);
3736
3737         std::ostringstream os(std::ios_base::binary);
3738         core::list<Player *> players = m_env.getPlayers(true);
3739
3740         writeU16(os, TOCLIENT_PLAYERITEM);
3741         writeU16(os, players.size());
3742         core::list<Player *>::Iterator i;
3743         for(i = players.begin(); i != players.end(); ++i)
3744         {
3745                 Player *p = *i;
3746                 writeU16(os, p->peer_id);
3747                 os<<serializeString(getWieldedItemString(p));
3748         }
3749
3750         // Make data buffer
3751         std::string s = os.str();
3752         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3753
3754         m_con.SendToAll(0, data, true);
3755 }
3756
3757 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3758 {
3759         DSTACK(__FUNCTION_NAME);
3760
3761         std::ostringstream os(std::ios_base::binary);
3762         u8 buf[12];
3763
3764         // Write command
3765         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3766         os.write((char*)buf, 2);
3767
3768         // Write length
3769         writeU16(buf, message.size());
3770         os.write((char*)buf, 2);
3771
3772         // Write string
3773         for(u32 i=0; i<message.size(); i++)
3774         {
3775                 u16 w = message[i];
3776                 writeU16(buf, w);
3777                 os.write((char*)buf, 2);
3778         }
3779
3780         // Make data buffer
3781         std::string s = os.str();
3782         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3783         // Send as reliable
3784         m_con.Send(peer_id, 0, data, true);
3785 }
3786
3787 void Server::BroadcastChatMessage(const std::wstring &message)
3788 {
3789         for(core::map<u16, RemoteClient*>::Iterator
3790                 i = m_clients.getIterator();
3791                 i.atEnd() == false; i++)
3792         {
3793                 // Get client and check that it is valid
3794                 RemoteClient *client = i.getNode()->getValue();
3795                 assert(client->peer_id == i.getNode()->getKey());
3796                 if(client->serialization_version == SER_FMT_VER_INVALID)
3797                         continue;
3798
3799                 SendChatMessage(client->peer_id, message);
3800         }
3801 }
3802
3803 void Server::SendPlayerHP(Player *player)
3804 {
3805         SendHP(m_con, player->peer_id, player->hp);
3806 }
3807
3808 void Server::SendMovePlayer(Player *player)
3809 {
3810         DSTACK(__FUNCTION_NAME);
3811         std::ostringstream os(std::ios_base::binary);
3812
3813         writeU16(os, TOCLIENT_MOVE_PLAYER);
3814         writeV3F1000(os, player->getPosition());
3815         writeF1000(os, player->getPitch());
3816         writeF1000(os, player->getYaw());
3817
3818         {
3819                 v3f pos = player->getPosition();
3820                 f32 pitch = player->getPitch();
3821                 f32 yaw = player->getYaw();
3822                 dstream<<"Server sending TOCLIENT_MOVE_PLAYER"
3823                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3824                                 <<" pitch="<<pitch
3825                                 <<" yaw="<<yaw
3826                                 <<std::endl;
3827         }
3828
3829         // Make data buffer
3830         std::string s = os.str();
3831         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3832         // Send as reliable
3833         m_con.Send(player->peer_id, 0, data, true);
3834 }
3835
3836 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3837         core::list<u16> *far_players, float far_d_nodes)
3838 {
3839         float maxd = far_d_nodes*BS;
3840         v3f p_f = intToFloat(p, BS);
3841
3842         // Create packet
3843         u32 replysize = 8;
3844         SharedBuffer<u8> reply(replysize);
3845         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3846         writeS16(&reply[2], p.X);
3847         writeS16(&reply[4], p.Y);
3848         writeS16(&reply[6], p.Z);
3849
3850         for(core::map<u16, RemoteClient*>::Iterator
3851                 i = m_clients.getIterator();
3852                 i.atEnd() == false; i++)
3853         {
3854                 // Get client and check that it is valid
3855                 RemoteClient *client = i.getNode()->getValue();
3856                 assert(client->peer_id == i.getNode()->getKey());
3857                 if(client->serialization_version == SER_FMT_VER_INVALID)
3858                         continue;
3859
3860                 // Don't send if it's the same one
3861                 if(client->peer_id == ignore_id)
3862                         continue;
3863
3864                 if(far_players)
3865                 {
3866                         // Get player
3867                         Player *player = m_env.getPlayer(client->peer_id);
3868                         if(player)
3869                         {
3870                                 // If player is far away, only set modified blocks not sent
3871                                 v3f player_pos = player->getPosition();
3872                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3873                                 {
3874                                         far_players->push_back(client->peer_id);
3875                                         continue;
3876                                 }
3877                         }
3878                 }
3879
3880                 // Send as reliable
3881                 m_con.Send(client->peer_id, 0, reply, true);
3882         }
3883 }
3884
3885 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3886                 core::list<u16> *far_players, float far_d_nodes)
3887 {
3888         float maxd = far_d_nodes*BS;
3889         v3f p_f = intToFloat(p, BS);
3890
3891         for(core::map<u16, RemoteClient*>::Iterator
3892                 i = m_clients.getIterator();
3893                 i.atEnd() == false; i++)
3894         {
3895                 // Get client and check that it is valid
3896                 RemoteClient *client = i.getNode()->getValue();
3897                 assert(client->peer_id == i.getNode()->getKey());
3898                 if(client->serialization_version == SER_FMT_VER_INVALID)
3899                         continue;
3900
3901                 // Don't send if it's the same one
3902                 if(client->peer_id == ignore_id)
3903                         continue;
3904
3905                 if(far_players)
3906                 {
3907                         // Get player
3908                         Player *player = m_env.getPlayer(client->peer_id);
3909                         if(player)
3910                         {
3911                                 // If player is far away, only set modified blocks not sent
3912                                 v3f player_pos = player->getPosition();
3913                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3914                                 {
3915                                         far_players->push_back(client->peer_id);
3916                                         continue;
3917                                 }
3918                         }
3919                 }
3920
3921                 // Create packet
3922                 u32 replysize = 8 + MapNode::serializedLength(client->serialization_version);
3923                 SharedBuffer<u8> reply(replysize);
3924                 writeU16(&reply[0], TOCLIENT_ADDNODE);
3925                 writeS16(&reply[2], p.X);
3926                 writeS16(&reply[4], p.Y);
3927                 writeS16(&reply[6], p.Z);
3928                 n.serialize(&reply[8], client->serialization_version);
3929
3930                 // Send as reliable
3931                 m_con.Send(client->peer_id, 0, reply, true);
3932         }
3933 }
3934
3935 void Server::setBlockNotSent(v3s16 p)
3936 {
3937         for(core::map<u16, RemoteClient*>::Iterator
3938                 i = m_clients.getIterator();
3939                 i.atEnd()==false; i++)
3940         {
3941                 RemoteClient *client = i.getNode()->getValue();
3942                 client->SetBlockNotSent(p);
3943         }
3944 }
3945
3946 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
3947 {
3948         DSTACK(__FUNCTION_NAME);
3949
3950         v3s16 p = block->getPos();
3951
3952 #if 0
3953         // Analyze it a bit
3954         bool completely_air = true;
3955         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
3956         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
3957         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
3958         {
3959                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
3960                 {
3961                         completely_air = false;
3962                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
3963                 }
3964         }
3965
3966         // Print result
3967         dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
3968         if(completely_air)
3969                 dstream<<"[completely air] ";
3970         dstream<<std::endl;
3971 #endif
3972
3973         /*
3974                 Create a packet with the block in the right format
3975         */
3976
3977         std::ostringstream os(std::ios_base::binary);
3978         block->serialize(os, ver);
3979         std::string s = os.str();
3980         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
3981
3982         u32 replysize = 8 + blockdata.getSize();
3983         SharedBuffer<u8> reply(replysize);
3984         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
3985         writeS16(&reply[2], p.X);
3986         writeS16(&reply[4], p.Y);
3987         writeS16(&reply[6], p.Z);
3988         memcpy(&reply[8], *blockdata, blockdata.getSize());
3989
3990         /*dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3991                         <<":  \tpacket size: "<<replysize<<std::endl;*/
3992
3993         /*
3994                 Send packet
3995         */
3996         m_con.Send(peer_id, 1, reply, true);
3997 }
3998
3999 void Server::SendBlocks(float dtime)
4000 {
4001         DSTACK(__FUNCTION_NAME);
4002
4003         JMutexAutoLock envlock(m_env_mutex);
4004         JMutexAutoLock conlock(m_con_mutex);
4005
4006         //TimeTaker timer("Server::SendBlocks");
4007
4008         core::array<PrioritySortedBlockTransfer> queue;
4009
4010         s32 total_sending = 0;
4011
4012         {
4013                 ScopeProfiler sp(&g_profiler, "Server: selecting blocks for sending");
4014
4015                 for(core::map<u16, RemoteClient*>::Iterator
4016                         i = m_clients.getIterator();
4017                         i.atEnd() == false; i++)
4018                 {
4019                         RemoteClient *client = i.getNode()->getValue();
4020                         assert(client->peer_id == i.getNode()->getKey());
4021
4022                         total_sending += client->SendingCount();
4023
4024                         if(client->serialization_version == SER_FMT_VER_INVALID)
4025                                 continue;
4026
4027                         client->GetNextBlocks(this, dtime, queue);
4028                 }
4029         }
4030
4031         // Sort.
4032         // Lowest priority number comes first.
4033         // Lowest is most important.
4034         queue.sort();
4035
4036         for(u32 i=0; i<queue.size(); i++)
4037         {
4038                 //TODO: Calculate limit dynamically
4039                 if(total_sending >= g_settings.getS32
4040                                 ("max_simultaneous_block_sends_server_total"))
4041                         break;
4042
4043                 PrioritySortedBlockTransfer q = queue[i];
4044
4045                 MapBlock *block = NULL;
4046                 try
4047                 {
4048                         block = m_env.getMap().getBlockNoCreate(q.pos);
4049                 }
4050                 catch(InvalidPositionException &e)
4051                 {
4052                         continue;
4053                 }
4054
4055                 RemoteClient *client = getClient(q.peer_id);
4056
4057                 SendBlockNoLock(q.peer_id, block, client->serialization_version);
4058
4059                 client->SentBlock(q.pos);
4060
4061                 total_sending++;
4062         }
4063 }
4064
4065 /*
4066         Something random
4067 */
4068
4069 void Server::UpdateCrafting(u16 peer_id)
4070 {
4071         DSTACK(__FUNCTION_NAME);
4072
4073         Player* player = m_env.getPlayer(peer_id);
4074         assert(player);
4075
4076         /*
4077                 Calculate crafting stuff
4078         */
4079         if(g_settings.getBool("creative_mode") == false)
4080         {
4081                 InventoryList *clist = player->inventory.getList("craft");
4082                 InventoryList *rlist = player->inventory.getList("craftresult");
4083
4084                 if(rlist->getUsedSlots() == 0)
4085                         player->craftresult_is_preview = true;
4086
4087                 if(rlist && player->craftresult_is_preview)
4088                 {
4089                         rlist->clearItems();
4090                 }
4091                 if(clist && rlist && player->craftresult_is_preview)
4092                 {
4093                         InventoryItem *items[9];
4094                         for(u16 i=0; i<9; i++)
4095                         {
4096                                 items[i] = clist->getItem(i);
4097                         }
4098
4099                         // Get result of crafting grid
4100                         InventoryItem *result = craft_get_result(items);
4101                         if(result)
4102                                 rlist->addItem(result);
4103                 }
4104
4105         } // if creative_mode == false
4106 }
4107
4108 RemoteClient* Server::getClient(u16 peer_id)
4109 {
4110         DSTACK(__FUNCTION_NAME);
4111         //JMutexAutoLock lock(m_con_mutex);
4112         core::map<u16, RemoteClient*>::Node *n;
4113         n = m_clients.find(peer_id);
4114         // A client should exist for all peers
4115         assert(n != NULL);
4116         return n->getValue();
4117 }
4118
4119 std::wstring Server::getStatusString()
4120 {
4121         std::wostringstream os(std::ios_base::binary);
4122         os<<L"# Server: ";
4123         // Version
4124         os<<L"version="<<narrow_to_wide(VERSION_STRING);
4125         // Uptime
4126         os<<L", uptime="<<m_uptime.get();
4127         // Information about clients
4128         os<<L", clients={";
4129         for(core::map<u16, RemoteClient*>::Iterator
4130                 i = m_clients.getIterator();
4131                 i.atEnd() == false; i++)
4132         {
4133                 // Get client and check that it is valid
4134                 RemoteClient *client = i.getNode()->getValue();
4135                 assert(client->peer_id == i.getNode()->getKey());
4136                 if(client->serialization_version == SER_FMT_VER_INVALID)
4137                         continue;
4138                 // Get player
4139                 Player *player = m_env.getPlayer(client->peer_id);
4140                 // Get name of player
4141                 std::wstring name = L"unknown";
4142                 if(player != NULL)
4143                         name = narrow_to_wide(player->getName());
4144                 // Add name to information string
4145                 os<<name<<L",";
4146         }
4147         os<<L"}";
4148         if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == false)
4149                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4150         if(g_settings.get("motd") != "")
4151                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings.get("motd"));
4152         return os.str();
4153 }
4154
4155 v3f findSpawnPos(ServerMap &map)
4156 {
4157         //return v3f(50,50,50)*BS;
4158
4159         v2s16 nodepos;
4160         s16 groundheight = 0;
4161
4162 #if 0
4163         nodepos = v2s16(0,0);
4164         groundheight = 20;
4165 #endif
4166
4167 #if 1
4168         // Try to find a good place a few times
4169         for(s32 i=0; i<1000; i++)
4170         {
4171                 s32 range = 1 + i;
4172                 // We're going to try to throw the player to this position
4173                 nodepos = v2s16(-range + (myrand()%(range*2)),
4174                                 -range + (myrand()%(range*2)));
4175                 v2s16 sectorpos = getNodeSectorPos(nodepos);
4176                 // Get sector (NOTE: Don't get because it's slow)
4177                 //m_env.getMap().emergeSector(sectorpos);
4178                 // Get ground height at point (fallbacks to heightmap function)
4179                 groundheight = map.findGroundLevel(nodepos);
4180                 // Don't go underwater
4181                 if(groundheight < WATER_LEVEL)
4182                 {
4183                         //dstream<<"-> Underwater"<<std::endl;
4184                         continue;
4185                 }
4186                 // Don't go to high places
4187                 if(groundheight > WATER_LEVEL + 4)
4188                 {
4189                         //dstream<<"-> Underwater"<<std::endl;
4190                         continue;
4191                 }
4192
4193                 // Found a good place
4194                 //dstream<<"Searched through "<<i<<" places."<<std::endl;
4195                 break;
4196         }
4197 #endif
4198
4199         // If no suitable place was not found, go above water at least.
4200         if(groundheight < WATER_LEVEL)
4201                 groundheight = WATER_LEVEL;
4202
4203         return intToFloat(v3s16(
4204                         nodepos.X,
4205                         groundheight + 3,
4206                         nodepos.Y
4207                         ), BS);
4208 }
4209
4210 Player *Server::emergePlayer(const char *name, const char *password, u16 peer_id)
4211 {
4212         /*
4213                 Try to get an existing player
4214         */
4215         Player *player = m_env.getPlayer(name);
4216         if(player != NULL)
4217         {
4218                 // If player is already connected, cancel
4219                 if(player->peer_id != 0)
4220                 {
4221                         dstream<<"emergePlayer(): Player already connected"<<std::endl;
4222                         return NULL;
4223                 }
4224
4225                 // Got one.
4226                 player->peer_id = peer_id;
4227
4228                 // Reset inventory to creative if in creative mode
4229                 if(g_settings.getBool("creative_mode"))
4230                 {
4231                         // Warning: double code below
4232                         // Backup actual inventory
4233                         player->inventory_backup = new Inventory();
4234                         *(player->inventory_backup) = player->inventory;
4235                         // Set creative inventory
4236                         craft_set_creative_inventory(player);
4237                 }
4238
4239                 return player;
4240         }
4241
4242         /*
4243                 If player with the wanted peer_id already exists, cancel.
4244         */
4245         if(m_env.getPlayer(peer_id) != NULL)
4246         {
4247                 dstream<<"emergePlayer(): Player with wrong name but same"
4248                                 " peer_id already exists"<<std::endl;
4249                 return NULL;
4250         }
4251
4252         /*
4253                 Create a new player
4254         */
4255         {
4256                 player = new ServerRemotePlayer();
4257                 //player->peer_id = c.peer_id;
4258                 //player->peer_id = PEER_ID_INEXISTENT;
4259                 player->peer_id = peer_id;
4260                 player->updateName(name);
4261                 m_authmanager.add(name);
4262                 m_authmanager.setPassword(name, password);
4263                 m_authmanager.setPrivs(name,
4264                                 stringToPrivs(g_settings.get("default_privs")));
4265
4266                 /*
4267                         Set player position
4268                 */
4269
4270                 dstream<<"Server: Finding spawn place for player \""
4271                                 <<player->getName()<<"\""<<std::endl;
4272
4273                 v3f pos = findSpawnPos(m_env.getServerMap());
4274
4275                 player->setPosition(pos);
4276
4277                 /*
4278                         Add player to environment
4279                 */
4280
4281                 m_env.addPlayer(player);
4282
4283                 /*
4284                         Add stuff to inventory
4285                 */
4286
4287                 if(g_settings.getBool("creative_mode"))
4288                 {
4289                         // Warning: double code above
4290                         // Backup actual inventory
4291                         player->inventory_backup = new Inventory();
4292                         *(player->inventory_backup) = player->inventory;
4293                         // Set creative inventory
4294                         craft_set_creative_inventory(player);
4295                 }
4296                 else if(g_settings.getBool("give_initial_stuff"))
4297                 {
4298                         craft_give_initial_stuff(player);
4299                 }
4300
4301                 return player;
4302
4303         } // create new player
4304 }
4305
4306 void Server::handlePeerChange(PeerChange &c)
4307 {
4308         JMutexAutoLock envlock(m_env_mutex);
4309         JMutexAutoLock conlock(m_con_mutex);
4310
4311         if(c.type == PEER_ADDED)
4312         {
4313                 /*
4314                         Add
4315                 */
4316
4317                 // Error check
4318                 core::map<u16, RemoteClient*>::Node *n;
4319                 n = m_clients.find(c.peer_id);
4320                 // The client shouldn't already exist
4321                 assert(n == NULL);
4322
4323                 // Create client
4324                 RemoteClient *client = new RemoteClient();
4325                 client->peer_id = c.peer_id;
4326                 m_clients.insert(client->peer_id, client);
4327
4328         } // PEER_ADDED
4329         else if(c.type == PEER_REMOVED)
4330         {
4331                 /*
4332                         Delete
4333                 */
4334
4335                 // Error check
4336                 core::map<u16, RemoteClient*>::Node *n;
4337                 n = m_clients.find(c.peer_id);
4338                 // The client should exist
4339                 assert(n != NULL);
4340
4341                 /*
4342                         Mark objects to be not known by the client
4343                 */
4344                 RemoteClient *client = n->getValue();
4345                 // Handle objects
4346                 for(core::map<u16, bool>::Iterator
4347                                 i = client->m_known_objects.getIterator();
4348                                 i.atEnd()==false; i++)
4349                 {
4350                         // Get object
4351                         u16 id = i.getNode()->getKey();
4352                         ServerActiveObject* obj = m_env.getActiveObject(id);
4353
4354                         if(obj && obj->m_known_by_count > 0)
4355                                 obj->m_known_by_count--;
4356                 }
4357
4358                 // Collect information about leaving in chat
4359                 std::wstring message;
4360                 {
4361                         std::wstring name = L"unknown";
4362                         Player *player = m_env.getPlayer(c.peer_id);
4363                         if(player != NULL)
4364                                 name = narrow_to_wide(player->getName());
4365
4366                         message += L"*** ";
4367                         message += name;
4368                         message += L" left game";
4369                         if(c.timeout)
4370                                 message += L" (timed out)";
4371                 }
4372
4373                 /*// Delete player
4374                 {
4375                         m_env.removePlayer(c.peer_id);
4376                 }*/
4377
4378                 // Set player client disconnected
4379                 {
4380                         Player *player = m_env.getPlayer(c.peer_id);
4381                         if(player != NULL)
4382                                 player->peer_id = 0;
4383                 }
4384
4385                 // Delete client
4386                 delete m_clients[c.peer_id];
4387                 m_clients.remove(c.peer_id);
4388
4389                 // Send player info to all remaining clients
4390                 SendPlayerInfos();
4391
4392                 // Send leave chat message to all remaining clients
4393                 BroadcastChatMessage(message);
4394
4395         } // PEER_REMOVED
4396         else
4397         {
4398                 assert(0);
4399         }
4400 }
4401
4402 void Server::handlePeerChanges()
4403 {
4404         while(m_peer_change_queue.size() > 0)
4405         {
4406                 PeerChange c = m_peer_change_queue.pop_front();
4407
4408                 dout_server<<"Server: Handling peer change: "
4409                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
4410                                 <<std::endl;
4411
4412                 handlePeerChange(c);
4413         }
4414 }
4415
4416 u64 Server::getPlayerPrivs(Player *player)
4417 {
4418         if(player==NULL)
4419                 return 0;
4420         std::string playername = player->getName();
4421         // Local player gets all privileges regardless of
4422         // what's set on their account.
4423         if(g_settings.get("name") == playername)
4424         {
4425                 return PRIV_ALL;
4426         }
4427         else
4428         {
4429                 return getPlayerAuthPrivs(playername);
4430         }
4431 }
4432
4433 void dedicated_server_loop(Server &server, bool &kill)
4434 {
4435         DSTACK(__FUNCTION_NAME);
4436
4437         dstream<<DTIME<<std::endl;
4438         dstream<<"========================"<<std::endl;
4439         dstream<<"Running dedicated server"<<std::endl;
4440         dstream<<"========================"<<std::endl;
4441         dstream<<std::endl;
4442
4443         IntervalLimiter m_profiler_interval;
4444
4445         for(;;)
4446         {
4447                 // This is kind of a hack but can be done like this
4448                 // because server.step() is very light
4449                 {
4450                         ScopeProfiler sp(&g_profiler, "dedicated server sleep");
4451                         sleep_ms(30);
4452                 }
4453                 server.step(0.030);
4454
4455                 if(server.getShutdownRequested() || kill)
4456                 {
4457                         dstream<<DTIME<<" dedicated_server_loop(): Quitting."<<std::endl;
4458                         break;
4459                 }
4460
4461                 /*
4462                         Profiler
4463                 */
4464                 float profiler_print_interval =
4465                                 g_settings.getFloat("profiler_print_interval");
4466                 if(profiler_print_interval != 0)
4467                 {
4468                         if(m_profiler_interval.step(0.030, profiler_print_interval))
4469                         {
4470                                 dstream<<"Profiler:"<<std::endl;
4471                                 g_profiler.print(dstream);
4472                                 g_profiler.clear();
4473                         }
4474                 }
4475
4476                 /*
4477                         Player info
4478                 */
4479                 static int counter = 0;
4480                 counter--;
4481                 if(counter <= 0)
4482                 {
4483                         counter = 10;
4484
4485                         core::list<PlayerInfo> list = server.getPlayerInfo();
4486                         core::list<PlayerInfo>::Iterator i;
4487                         static u32 sum_old = 0;
4488                         u32 sum = PIChecksum(list);
4489                         if(sum != sum_old)
4490                         {
4491                                 dstream<<DTIME<<"Player info:"<<std::endl;
4492                                 for(i=list.begin(); i!=list.end(); i++)
4493                                 {
4494                                         i->PrintLine(&dstream);
4495                                 }
4496                         }
4497                         sum_old = sum;
4498                 }
4499         }
4500 }
4501
4502