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                         u16 peer_id
 778                         v3s32 position*100
 779                         v3s32 speed*100
 780                         s32 pitch*100
 781                         s32 yaw*100
 782                 u16 count of blocks
 783                 for each block:
 784                         block objects
 785         */
 786
 787         std::ostringstream os(std::ios_base::binary);
 788         u8 buf[12];
 789
 790         // Write command
 791         writeU16(buf, TOCLIENT_OBJECTDATA);
 792         os.write((char*)buf, 2);
 793
 794         /*
 795                 Get and write player data
 796         */
 797
 798         // Get connected players
 799         core::list<Player*> players = server->m_env.getPlayers(true);
 800
 801         // Write player count
 802         u16 playercount = players.size();
 803         writeU16(buf, playercount);
 804         os.write((char*)buf, 2);
 805
 806         core::list<Player*>::Iterator i;
 807         for(i = players.begin();
 808                         i != players.end(); i++)
 809         {
 810                 Player *player = *i;
 811
 812                 v3f pf = player->getPosition();
 813                 v3f sf = player->getSpeed();
 814
 815                 v3s32 position_i(pf.X*100, pf.Y*100, pf.Z*100);
 816                 v3s32 speed_i   (sf.X*100, sf.Y*100, sf.Z*100);
 817                 s32   pitch_i   (player->getPitch() * 100);
 818                 s32   yaw_i     (player->getYaw() * 100);
 819
 820                 writeU16(buf, player->peer_id);
 821                 os.write((char*)buf, 2);
 822                 writeV3S32(buf, position_i);
 823                 os.write((char*)buf, 12);
 824                 writeV3S32(buf, speed_i);
 825                 os.write((char*)buf, 12);
 826                 writeS32(buf, pitch_i);
 827                 os.write((char*)buf, 4);
 828                 writeS32(buf, yaw_i);
 829                 os.write((char*)buf, 4);
 830         }
 831
 832         /*
 833                 Get and write object data
 834         */
 835
 836         /*
 837                 Get nearby blocks.
 838
 839                 For making players to be able to build to their nearby
 840                 environment (building is not possible on blocks that are not
 841                 in memory):
 842                 - Set blocks changed
 843                 - Add blocks to emerge queue if they are not found
 844
 845                 SUGGESTION: These could be ignored from the backside of the player
 846         */
 847
 848         Player *player = server->m_env.getPlayer(peer_id);
 849
 850         assert(player);
 851
 852         v3f playerpos = player->getPosition();
 853         v3f playerspeed = player->getSpeed();
 854
 855         v3s16 center_nodepos = floatToInt(playerpos, BS);
 856         v3s16 center = getNodeBlockPos(center_nodepos);
 857
 858         s16 d_max = g_settings.getS16("active_object_range");
 859
 860         // Number of blocks whose objects were written to bos
 861         u16 blockcount = 0;
 862
 863         std::ostringstream bos(std::ios_base::binary);
 864
 865         for(s16 d = 0; d <= d_max; d++)
 866         {
 867                 core::list<v3s16> list;
 868                 getFacePositions(list, d);
 869
 870                 core::list<v3s16>::Iterator li;
 871                 for(li=list.begin(); li!=list.end(); li++)
 872                 {
 873                         v3s16 p = *li + center;
 874
 875                         /*
 876                                 Ignore blocks that haven't been sent to the client
 877                         */
 878                         {
 879                                 if(m_blocks_sent.find(p) == NULL)
 880                                         continue;
 881                         }
 882
 883                         // Try stepping block and add it to a send queue
 884                         try
 885                         {
 886
 887                         // Get block
 888                         MapBlock *block = server->m_env.getMap().getBlockNoCreate(p);
 889
 890                         /*
 891                                 Step block if not in stepped_blocks and add to stepped_blocks.
 892                         */
 893                         if(stepped_blocks.find(p) == NULL)
 894                         {
 895                                 block->stepObjects(dtime, true, server->m_env.getDayNightRatio());
 896                                 stepped_blocks.insert(p, true);
 897                                 block->setChangedFlag();
 898                         }
 899
 900                         // Skip block if there are no objects
 901                         if(block->getObjectCount() == 0)
 902                                 continue;
 903
 904                         /*
 905                                 Write objects
 906                         */
 907
 908                         // Write blockpos
 909                         writeV3S16(buf, p);
 910                         bos.write((char*)buf, 6);
 911
 912                         // Write objects
 913                         //block->serializeObjects(bos, serialization_version); // DEPRECATED
 914                         // count=0
 915                         writeU16(bos, 0);
 916
 917                         blockcount++;
 918
 919                         /*
 920                                 Stop collecting objects if data is already too big
 921                         */
 922                         // Sum of player and object data sizes
 923                         s32 sum = (s32)os.tellp() + 2 + (s32)bos.tellp();
 924                         // break out if data too big
 925                         if(sum > MAX_OBJECTDATA_SIZE)
 926                         {
 927                                 goto skip_subsequent;
 928                         }
 929
 930                         } //try
 931                         catch(InvalidPositionException &e)
 932                         {
 933                                 // Not in memory
 934                                 // Add it to the emerge queue and trigger the thread.
 935                                 // Fetch the block only if it is on disk.
 936
 937                                 // Grab and increment counter
 938                                 /*SharedPtr<JMutexAutoLock> lock
 939                                                 (m_num_blocks_in_emerge_queue.getLock());
 940                                 m_num_blocks_in_emerge_queue.m_value++;*/
 941
 942                                 // Add to queue as an anonymous fetch from disk
 943                                 u8 flags = BLOCK_EMERGE_FLAG_FROMDISK;
 944                                 server->m_emerge_queue.addBlock(0, p, flags);
 945                                 server->m_emergethread.trigger();
 946                         }
 947                 }
 948         }
 949
 950 skip_subsequent:
 951
 952         // Write block count
 953         writeU16(buf, blockcount);
 954         os.write((char*)buf, 2);
 955
 956         // Write block objects
 957         os<<bos.str();
 958
 959         /*
 960                 Send data
 961         */
 962
 963         //dstream<<"Server: Sending object data to "<<peer_id<<std::endl;
 964
 965         // Make data buffer
 966         std::string s = os.str();
 967         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
 968         // Send as unreliable
 969         server->m_con.Send(peer_id, 0, data, false);
 970 }
 971
 972 void RemoteClient::GotBlock(v3s16 p)
 973 {
 974         if(m_blocks_sending.find(p) != NULL)
 975                 m_blocks_sending.remove(p);
 976         else
 977         {
 978                 /*dstream<<"RemoteClient::GotBlock(): Didn't find in"
 979                                 " m_blocks_sending"<<std::endl;*/
 980                 m_excess_gotblocks++;
 981         }
 982         m_blocks_sent.insert(p, true);
 983 }
 984
 985 void RemoteClient::SentBlock(v3s16 p)
 986 {
 987         if(m_blocks_sending.find(p) == NULL)
 988                 m_blocks_sending.insert(p, 0.0);
 989         else
 990                 dstream<<"RemoteClient::SentBlock(): Sent block"
 991                                 " already in m_blocks_sending"<<std::endl;
 992 }
 993
 994 void RemoteClient::SetBlockNotSent(v3s16 p)
 995 {
 996         m_nearest_unsent_d = 0;
 997
 998         if(m_blocks_sending.find(p) != NULL)
 999                 m_blocks_sending.remove(p);
1000         if(m_blocks_sent.find(p) != NULL)
1001                 m_blocks_sent.remove(p);
1002 }
1003
1004 void RemoteClient::SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks)
1005 {
1006         m_nearest_unsent_d = 0;
1007
1008         for(core::map<v3s16, MapBlock*>::Iterator
1009                         i = blocks.getIterator();
1010                         i.atEnd()==false; i++)
1011         {
1012                 v3s16 p = i.getNode()->getKey();
1013
1014                 if(m_blocks_sending.find(p) != NULL)
1015                         m_blocks_sending.remove(p);
1016                 if(m_blocks_sent.find(p) != NULL)
1017                         m_blocks_sent.remove(p);
1018         }
1019 }
1020
1021 /*
1022         PlayerInfo
1023 */
1024
1025 PlayerInfo::PlayerInfo()
1026 {
1027         name[0] = 0;
1028         avg_rtt = 0;
1029 }
1030
1031 void PlayerInfo::PrintLine(std::ostream *s)
1032 {
1033         (*s)<<id<<": ";
1034         (*s)<<"\""<<name<<"\" ("
1035                         <<(position.X/10)<<","<<(position.Y/10)
1036                         <<","<<(position.Z/10)<<") ";
1037         address.print(s);
1038         (*s)<<" avg_rtt="<<avg_rtt;
1039         (*s)<<std::endl;
1040 }
1041
1042 u32 PIChecksum(core::list<PlayerInfo> &l)
1043 {
1044         core::list<PlayerInfo>::Iterator i;
1045         u32 checksum = 1;
1046         u32 a = 10;
1047         for(i=l.begin(); i!=l.end(); i++)
1048         {
1049                 checksum += a * (i->id+1);
1050                 checksum ^= 0x435aafcd;
1051                 a *= 10;
1052         }
1053         return checksum;
1054 }
1055
1056 /*
1057         Server
1058 */
1059
1060 Server::Server(
1061                 std::string mapsavedir,
1062                 std::string configpath
1063         ):
1064         m_env(new ServerMap(mapsavedir), this),
1065         m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
1066         m_authmanager(mapsavedir+"/auth.txt"),
1067         m_banmanager(mapsavedir+"/ipban.txt"),
1068         m_thread(this),
1069         m_emergethread(this),
1070         m_time_counter(0),
1071         m_time_of_day_send_timer(0),
1072         m_uptime(0),
1073         m_mapsavedir(mapsavedir),
1074         m_configpath(configpath),
1075         m_shutdown_requested(false),
1076         m_ignore_map_edit_events(false),
1077         m_ignore_map_edit_events_peer_id(0)
1078 {
1079         m_liquid_transform_timer = 0.0;
1080         m_print_info_timer = 0.0;
1081         m_objectdata_timer = 0.0;
1082         m_emergethread_trigger_timer = 0.0;
1083         m_savemap_timer = 0.0;
1084
1085         m_env_mutex.Init();
1086         m_con_mutex.Init();
1087         m_step_dtime_mutex.Init();
1088         m_step_dtime = 0.0;
1089
1090         // Register us to receive map edit events
1091         m_env.getMap().addEventReceiver(this);
1092
1093         // If file exists, load environment metadata
1094         if(fs::PathExists(m_mapsavedir+"/env_meta.txt"))
1095         {
1096                 dstream<<"Server: Loading environment metadata"<<std::endl;
1097                 m_env.loadMeta(m_mapsavedir);
1098         }
1099
1100         // Load players
1101         dstream<<"Server: Loading players"<<std::endl;
1102         m_env.deSerializePlayers(m_mapsavedir);
1103 }
1104
1105 Server::~Server()
1106 {
1107         dstream<<"Server::~Server()"<<std::endl;
1108
1109         /*
1110                 Send shutdown message
1111         */
1112         {
1113                 JMutexAutoLock conlock(m_con_mutex);
1114
1115                 std::wstring line = L"*** Server shutting down";
1116
1117                 /*
1118                         Send the message to clients
1119                 */
1120                 for(core::map<u16, RemoteClient*>::Iterator
1121                         i = m_clients.getIterator();
1122                         i.atEnd() == false; i++)
1123                 {
1124                         // Get client and check that it is valid
1125                         RemoteClient *client = i.getNode()->getValue();
1126                         assert(client->peer_id == i.getNode()->getKey());
1127                         if(client->serialization_version == SER_FMT_VER_INVALID)
1128                                 continue;
1129
1130                         try{
1131                                 SendChatMessage(client->peer_id, line);
1132                         }
1133                         catch(con::PeerNotFoundException &e)
1134                         {}
1135                 }
1136         }
1137
1138         /*
1139                 Save players
1140         */
1141         dstream<<"Server: Saving players"<<std::endl;
1142         m_env.serializePlayers(m_mapsavedir);
1143
1144         /*
1145                 Save environment metadata
1146         */
1147         dstream<<"Server: Saving environment metadata"<<std::endl;
1148         m_env.saveMeta(m_mapsavedir);
1149
1150         /*
1151                 Stop threads
1152         */
1153         stop();
1154
1155         /*
1156                 Delete clients
1157         */
1158         {
1159                 JMutexAutoLock clientslock(m_con_mutex);
1160
1161                 for(core::map<u16, RemoteClient*>::Iterator
1162                         i = m_clients.getIterator();
1163                         i.atEnd() == false; i++)
1164                 {
1165                         /*// Delete player
1166                         // NOTE: These are removed by env destructor
1167                         {
1168                                 u16 peer_id = i.getNode()->getKey();
1169                                 JMutexAutoLock envlock(m_env_mutex);
1170                                 m_env.removePlayer(peer_id);
1171                         }*/
1172
1173                         // Delete client
1174                         delete i.getNode()->getValue();
1175                 }
1176         }
1177 }
1178
1179 void Server::start(unsigned short port)
1180 {
1181         DSTACK(__FUNCTION_NAME);
1182         // Stop thread if already running
1183         m_thread.stop();
1184
1185         // Initialize connection
1186         m_con.setTimeoutMs(30);
1187         m_con.Serve(port);
1188
1189         // Start thread
1190         m_thread.setRun(true);
1191         m_thread.Start();
1192
1193         dout_server<<"Server: Started on port "<<port<<std::endl;
1194 }
1195
1196 void Server::stop()
1197 {
1198         DSTACK(__FUNCTION_NAME);
1199
1200         // Stop threads (set run=false first so both start stopping)
1201         m_thread.setRun(false);
1202         m_emergethread.setRun(false);
1203         m_thread.stop();
1204         m_emergethread.stop();
1205
1206         dout_server<<"Server: Threads stopped"<<std::endl;
1207 }
1208
1209 void Server::step(float dtime)
1210 {
1211         DSTACK(__FUNCTION_NAME);
1212         // Limit a bit
1213         if(dtime > 2.0)
1214                 dtime = 2.0;
1215         {
1216                 JMutexAutoLock lock(m_step_dtime_mutex);
1217                 m_step_dtime += dtime;
1218         }
1219 }
1220
1221 void Server::AsyncRunStep()
1222 {
1223         DSTACK(__FUNCTION_NAME);
1224
1225         float dtime;
1226         {
1227                 JMutexAutoLock lock1(m_step_dtime_mutex);
1228                 dtime = m_step_dtime;
1229         }
1230
1231         {
1232                 ScopeProfiler sp(&g_profiler, "Server: selecting and sending "
1233                                 "blocks to clients");
1234                 // Send blocks to clients
1235                 SendBlocks(dtime);
1236         }
1237
1238         if(dtime < 0.001)
1239                 return;
1240
1241         //dstream<<"Server steps "<<dtime<<std::endl;
1242         //dstream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
1243
1244         {
1245                 JMutexAutoLock lock1(m_step_dtime_mutex);
1246                 m_step_dtime -= dtime;
1247         }
1248
1249         /*
1250                 Update uptime
1251         */
1252         {
1253                 m_uptime.set(m_uptime.get() + dtime);
1254         }
1255
1256         {
1257                 // Process connection's timeouts
1258                 JMutexAutoLock lock2(m_con_mutex);
1259                 ScopeProfiler sp(&g_profiler, "Server: connection timeout processing");
1260                 m_con.RunTimeouts(dtime);
1261         }
1262
1263         {
1264                 // This has to be called so that the client list gets synced
1265                 // with the peer list of the connection
1266                 ScopeProfiler sp(&g_profiler, "Server: peer change handling");
1267                 handlePeerChanges();
1268         }
1269
1270         /*
1271                 Update m_time_of_day and overall game time
1272         */
1273         {
1274                 JMutexAutoLock envlock(m_env_mutex);
1275
1276                 m_time_counter += dtime;
1277                 f32 speed = g_settings.getFloat("time_speed") * 24000./(24.*3600);
1278                 u32 units = (u32)(m_time_counter*speed);
1279                 m_time_counter -= (f32)units / speed;
1280
1281                 m_env.setTimeOfDay((m_env.getTimeOfDay() + units) % 24000);
1282
1283                 //dstream<<"Server: m_time_of_day = "<<m_time_of_day.get()<<std::endl;
1284
1285                 /*
1286                         Send to clients at constant intervals
1287                 */
1288
1289                 m_time_of_day_send_timer -= dtime;
1290                 if(m_time_of_day_send_timer < 0.0)
1291                 {
1292                         m_time_of_day_send_timer = g_settings.getFloat("time_send_interval");
1293
1294                         //JMutexAutoLock envlock(m_env_mutex);
1295                         JMutexAutoLock conlock(m_con_mutex);
1296
1297                         for(core::map<u16, RemoteClient*>::Iterator
1298                                 i = m_clients.getIterator();
1299                                 i.atEnd() == false; i++)
1300                         {
1301                                 RemoteClient *client = i.getNode()->getValue();
1302                                 //Player *player = m_env.getPlayer(client->peer_id);
1303
1304                                 SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
1305                                                 m_env.getTimeOfDay());
1306                                 // Send as reliable
1307                                 m_con.Send(client->peer_id, 0, data, true);
1308                         }
1309                 }
1310         }
1311
1312         {
1313                 JMutexAutoLock lock(m_env_mutex);
1314                 // Step environment
1315                 ScopeProfiler sp(&g_profiler, "Server: environment step");
1316                 m_env.step(dtime);
1317         }
1318
1319         const float map_timer_and_unload_dtime = 5.15;
1320         if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
1321         {
1322                 JMutexAutoLock lock(m_env_mutex);
1323                 // Run Map's timers and unload unused data
1324                 ScopeProfiler sp(&g_profiler, "Server: map timer and unload");
1325                 m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
1326                                 g_settings.getFloat("server_unload_unused_data_timeout"));
1327         }
1328
1329         /*
1330                 Do background stuff
1331         */
1332
1333         /*
1334                 Transform liquids
1335         */
1336         m_liquid_transform_timer += dtime;
1337         if(m_liquid_transform_timer >= 1.00)
1338         {
1339                 m_liquid_transform_timer -= 1.00;
1340
1341                 JMutexAutoLock lock(m_env_mutex);
1342
1343                 ScopeProfiler sp(&g_profiler, "Server: liquid transform");
1344
1345                 core::map<v3s16, MapBlock*> modified_blocks;
1346                 m_env.getMap().transformLiquids(modified_blocks);
1347 #if 0
1348                 /*
1349                         Update lighting
1350                 */
1351                 core::map<v3s16, MapBlock*> lighting_modified_blocks;
1352                 ServerMap &map = ((ServerMap&)m_env.getMap());
1353                 map.updateLighting(modified_blocks, lighting_modified_blocks);
1354
1355                 // Add blocks modified by lighting to modified_blocks
1356                 for(core::map<v3s16, MapBlock*>::Iterator
1357                                 i = lighting_modified_blocks.getIterator();
1358                                 i.atEnd() == false; i++)
1359                 {
1360                         MapBlock *block = i.getNode()->getValue();
1361                         modified_blocks.insert(block->getPos(), block);
1362                 }
1363 #endif
1364                 /*
1365                         Set the modified blocks unsent for all the clients
1366                 */
1367
1368                 JMutexAutoLock lock2(m_con_mutex);
1369
1370                 for(core::map<u16, RemoteClient*>::Iterator
1371                                 i = m_clients.getIterator();
1372                                 i.atEnd() == false; i++)
1373                 {
1374                         RemoteClient *client = i.getNode()->getValue();
1375
1376                         if(modified_blocks.size() > 0)
1377                         {
1378                                 // Remove block from sent history
1379                                 client->SetBlocksNotSent(modified_blocks);
1380                         }
1381                 }
1382         }
1383
1384         // Periodically print some info
1385         {
1386                 float &counter = m_print_info_timer;
1387                 counter += dtime;
1388                 if(counter >= 30.0)
1389                 {
1390                         counter = 0.0;
1391
1392                         JMutexAutoLock lock2(m_con_mutex);
1393
1394                         for(core::map<u16, RemoteClient*>::Iterator
1395                                 i = m_clients.getIterator();
1396                                 i.atEnd() == false; i++)
1397                         {
1398                                 //u16 peer_id = i.getNode()->getKey();
1399                                 RemoteClient *client = i.getNode()->getValue();
1400                                 Player *player = m_env.getPlayer(client->peer_id);
1401                                 if(player==NULL)
1402                                         continue;
1403                                 std::cout<<player->getName()<<"\t";
1404                                 client->PrintInfo(std::cout);
1405                         }
1406                 }
1407         }
1408
1409         //if(g_settings.getBool("enable_experimental"))
1410         {
1411
1412         /*
1413                 Check added and deleted active objects
1414         */
1415         {
1416                 //dstream<<"Server: Checking added and deleted active objects"<<std::endl;
1417                 JMutexAutoLock envlock(m_env_mutex);
1418                 JMutexAutoLock conlock(m_con_mutex);
1419
1420                 ScopeProfiler sp(&g_profiler, "Server: checking added and deleted objects");
1421
1422                 // Radius inside which objects are active
1423                 s16 radius = 32;
1424
1425                 for(core::map<u16, RemoteClient*>::Iterator
1426                         i = m_clients.getIterator();
1427                         i.atEnd() == false; i++)
1428                 {
1429                         RemoteClient *client = i.getNode()->getValue();
1430                         Player *player = m_env.getPlayer(client->peer_id);
1431                         if(player==NULL)
1432                         {
1433                                 // This can happen if the client timeouts somehow
1434                                 /*dstream<<"WARNING: "<<__FUNCTION_NAME<<": Client "
1435                                                 <<client->peer_id
1436                                                 <<" has no associated player"<<std::endl;*/
1437                                 continue;
1438                         }
1439                         v3s16 pos = floatToInt(player->getPosition(), BS);
1440
1441                         core::map<u16, bool> removed_objects;
1442                         core::map<u16, bool> added_objects;
1443                         m_env.getRemovedActiveObjects(pos, radius,
1444                                         client->m_known_objects, removed_objects);
1445                         m_env.getAddedActiveObjects(pos, radius,
1446                                         client->m_known_objects, added_objects);
1447
1448                         // Ignore if nothing happened
1449                         if(removed_objects.size() == 0 && added_objects.size() == 0)
1450                         {
1451                                 //dstream<<"INFO: active objects: none changed"<<std::endl;
1452                                 continue;
1453                         }
1454
1455                         std::string data_buffer;
1456
1457                         char buf[4];
1458
1459                         // Handle removed objects
1460                         writeU16((u8*)buf, removed_objects.size());
1461                         data_buffer.append(buf, 2);
1462                         for(core::map<u16, bool>::Iterator
1463                                         i = removed_objects.getIterator();
1464                                         i.atEnd()==false; i++)
1465                         {
1466                                 // Get object
1467                                 u16 id = i.getNode()->getKey();
1468                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1469
1470                                 // Add to data buffer for sending
1471                                 writeU16((u8*)buf, i.getNode()->getKey());
1472                                 data_buffer.append(buf, 2);
1473
1474                                 // Remove from known objects
1475                                 client->m_known_objects.remove(i.getNode()->getKey());
1476
1477                                 if(obj && obj->m_known_by_count > 0)
1478                                         obj->m_known_by_count--;
1479                         }
1480
1481                         // Handle added objects
1482                         writeU16((u8*)buf, added_objects.size());
1483                         data_buffer.append(buf, 2);
1484                         for(core::map<u16, bool>::Iterator
1485                                         i = added_objects.getIterator();
1486                                         i.atEnd()==false; i++)
1487                         {
1488                                 // Get object
1489                                 u16 id = i.getNode()->getKey();
1490                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1491
1492                                 // Get object type
1493                                 u8 type = ACTIVEOBJECT_TYPE_INVALID;
1494                                 if(obj == NULL)
1495                                         dstream<<"WARNING: "<<__FUNCTION_NAME
1496                                                         <<": NULL object"<<std::endl;
1497                                 else
1498                                         type = obj->getType();
1499
1500                                 // Add to data buffer for sending
1501                                 writeU16((u8*)buf, id);
1502                                 data_buffer.append(buf, 2);
1503                                 writeU8((u8*)buf, type);
1504                                 data_buffer.append(buf, 1);
1505
1506                                 if(obj)
1507                                         data_buffer.append(serializeLongString(
1508                                                         obj->getClientInitializationData()));
1509                                 else
1510                                         data_buffer.append(serializeLongString(""));
1511
1512                                 // Add to known objects
1513                                 client->m_known_objects.insert(i.getNode()->getKey(), false);
1514
1515                                 if(obj)
1516                                         obj->m_known_by_count++;
1517                         }
1518
1519                         // Send packet
1520                         SharedBuffer<u8> reply(2 + data_buffer.size());
1521                         writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD);
1522                         memcpy((char*)&reply[2], data_buffer.c_str(),
1523                                         data_buffer.size());
1524                         // Send as reliable
1525                         m_con.Send(client->peer_id, 0, reply, true);
1526
1527                         dstream<<"INFO: Server: Sent object remove/add: "
1528                                         <<removed_objects.size()<<" removed, "
1529                                         <<added_objects.size()<<" added, "
1530                                         <<"packet size is "<<reply.getSize()<<std::endl;
1531                 }
1532
1533 #if 0
1534                 /*
1535                         Collect a list of all the objects known by the clients
1536                         and report it back to the environment.
1537                 */
1538
1539                 core::map<u16, bool> all_known_objects;
1540
1541                 for(core::map<u16, RemoteClient*>::Iterator
1542                         i = m_clients.getIterator();
1543                         i.atEnd() == false; i++)
1544                 {
1545                         RemoteClient *client = i.getNode()->getValue();
1546                         // Go through all known objects of client
1547                         for(core::map<u16, bool>::Iterator
1548                                         i = client->m_known_objects.getIterator();
1549                                         i.atEnd()==false; i++)
1550                         {
1551                                 u16 id = i.getNode()->getKey();
1552                                 all_known_objects[id] = true;
1553                         }
1554                 }
1555
1556                 m_env.setKnownActiveObjects(whatever);
1557 #endif
1558
1559         }
1560
1561         /*
1562                 Send object messages
1563         */
1564         {
1565                 JMutexAutoLock envlock(m_env_mutex);
1566                 JMutexAutoLock conlock(m_con_mutex);
1567
1568                 ScopeProfiler sp(&g_profiler, "Server: sending object messages");
1569
1570                 // Key = object id
1571                 // Value = data sent by object
1572                 core::map<u16, core::list<ActiveObjectMessage>* > buffered_messages;
1573
1574                 // Get active object messages from environment
1575                 for(;;)
1576                 {
1577                         ActiveObjectMessage aom = m_env.getActiveObjectMessage();
1578                         if(aom.id == 0)
1579                                 break;
1580
1581                         core::list<ActiveObjectMessage>* message_list = NULL;
1582                         core::map<u16, core::list<ActiveObjectMessage>* >::Node *n;
1583                         n = buffered_messages.find(aom.id);
1584                         if(n == NULL)
1585                         {
1586                                 message_list = new core::list<ActiveObjectMessage>;
1587                                 buffered_messages.insert(aom.id, message_list);
1588                         }
1589                         else
1590                         {
1591                                 message_list = n->getValue();
1592                         }
1593                         message_list->push_back(aom);
1594                 }
1595
1596                 // Route data to every client
1597                 for(core::map<u16, RemoteClient*>::Iterator
1598                         i = m_clients.getIterator();
1599                         i.atEnd()==false; i++)
1600                 {
1601                         RemoteClient *client = i.getNode()->getValue();
1602                         std::string reliable_data;
1603                         std::string unreliable_data;
1604                         // Go through all objects in message buffer
1605                         for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1606                                         j = buffered_messages.getIterator();
1607                                         j.atEnd()==false; j++)
1608                         {
1609                                 // If object is not known by client, skip it
1610                                 u16 id = j.getNode()->getKey();
1611                                 if(client->m_known_objects.find(id) == NULL)
1612                                         continue;
1613                                 // Get message list of object
1614                                 core::list<ActiveObjectMessage>* list = j.getNode()->getValue();
1615                                 // Go through every message
1616                                 for(core::list<ActiveObjectMessage>::Iterator
1617                                                 k = list->begin(); k != list->end(); k++)
1618                                 {
1619                                         // Compose the full new data with header
1620                                         ActiveObjectMessage aom = *k;
1621                                         std::string new_data;
1622                                         // Add object id
1623                                         char buf[2];
1624                                         writeU16((u8*)&buf[0], aom.id);
1625                                         new_data.append(buf, 2);
1626                                         // Add data
1627                                         new_data += serializeString(aom.datastring);
1628                                         // Add data to buffer
1629                                         if(aom.reliable)
1630                                                 reliable_data += new_data;
1631                                         else
1632                                                 unreliable_data += new_data;
1633                                 }
1634                         }
1635                         /*
1636                                 reliable_data and unreliable_data are now ready.
1637                                 Send them.
1638                         */
1639                         if(reliable_data.size() > 0)
1640                         {
1641                                 SharedBuffer<u8> reply(2 + reliable_data.size());
1642                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1643                                 memcpy((char*)&reply[2], reliable_data.c_str(),
1644                                                 reliable_data.size());
1645                                 // Send as reliable
1646                                 m_con.Send(client->peer_id, 0, reply, true);
1647                         }
1648                         if(unreliable_data.size() > 0)
1649                         {
1650                                 SharedBuffer<u8> reply(2 + unreliable_data.size());
1651                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1652                                 memcpy((char*)&reply[2], unreliable_data.c_str(),
1653                                                 unreliable_data.size());
1654                                 // Send as unreliable
1655                                 m_con.Send(client->peer_id, 0, reply, false);
1656                         }
1657
1658                         /*if(reliable_data.size() > 0 || unreliable_data.size() > 0)
1659                         {
1660                                 dstream<<"INFO: Server: Size of object message data: "
1661                                                 <<"reliable: "<<reliable_data.size()
1662                                                 <<", unreliable: "<<unreliable_data.size()
1663                                                 <<std::endl;
1664                         }*/
1665                 }
1666
1667                 // Clear buffered_messages
1668                 for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1669                                 i = buffered_messages.getIterator();
1670                                 i.atEnd()==false; i++)
1671                 {
1672                         delete i.getNode()->getValue();
1673                 }
1674         }
1675
1676         } // enable_experimental
1677
1678         /*
1679                 Send queued-for-sending map edit events.
1680         */
1681         {
1682                 // Don't send too many at a time
1683                 //u32 count = 0;
1684
1685                 // Single change sending is disabled if queue size is not small
1686                 bool disable_single_change_sending = false;
1687                 if(m_unsent_map_edit_queue.size() >= 4)
1688                         disable_single_change_sending = true;
1689
1690                 bool got_any_events = false;
1691
1692                 // We'll log the amount of each
1693                 Profiler prof;
1694
1695                 while(m_unsent_map_edit_queue.size() != 0)
1696                 {
1697                         got_any_events = true;
1698
1699                         MapEditEvent* event = m_unsent_map_edit_queue.pop_front();
1700
1701                         // Players far away from the change are stored here.
1702                         // Instead of sending the changes, MapBlocks are set not sent
1703                         // for them.
1704                         core::list<u16> far_players;
1705
1706                         if(event->type == MEET_ADDNODE)
1707                         {
1708                                 //dstream<<"Server: MEET_ADDNODE"<<std::endl;
1709                                 prof.add("MEET_ADDNODE", 1);
1710                                 if(disable_single_change_sending)
1711                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1712                                                         &far_players, 5);
1713                                 else
1714                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1715                                                         &far_players, 30);
1716                         }
1717                         else if(event->type == MEET_REMOVENODE)
1718                         {
1719                                 //dstream<<"Server: MEET_REMOVENODE"<<std::endl;
1720                                 prof.add("MEET_REMOVENODE", 1);
1721                                 if(disable_single_change_sending)
1722                                         sendRemoveNode(event->p, event->already_known_by_peer,
1723                                                         &far_players, 5);
1724                                 else
1725                                         sendRemoveNode(event->p, event->already_known_by_peer,
1726                                                         &far_players, 30);
1727                         }
1728                         else if(event->type == MEET_BLOCK_NODE_METADATA_CHANGED)
1729                         {
1730                                 dstream<<"Server: MEET_BLOCK_NODE_METADATA_CHANGED"<<std::endl;
1731                                 prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
1732                                 setBlockNotSent(event->p);
1733                         }
1734                         else if(event->type == MEET_OTHER)
1735                         {
1736                                 dstream<<"Server: MEET_OTHER"<<std::endl;
1737                                 prof.add("MEET_OTHER", 1);
1738                                 for(core::map<v3s16, bool>::Iterator
1739                                                 i = event->modified_blocks.getIterator();
1740                                                 i.atEnd()==false; i++)
1741                                 {
1742                                         v3s16 p = i.getNode()->getKey();
1743                                         setBlockNotSent(p);
1744                                 }
1745                         }
1746                         else
1747                         {
1748                                 prof.add("unknown", 1);
1749                                 dstream<<"WARNING: Server: Unknown MapEditEvent "
1750                                                 <<((u32)event->type)<<std::endl;
1751                         }
1752
1753                         /*
1754                                 Set blocks not sent to far players
1755                         */
1756                         if(far_players.size() > 0)
1757                         {
1758                                 // Convert list format to that wanted by SetBlocksNotSent
1759                                 core::map<v3s16, MapBlock*> modified_blocks2;
1760                                 for(core::map<v3s16, bool>::Iterator
1761                                                 i = event->modified_blocks.getIterator();
1762                                                 i.atEnd()==false; i++)
1763                                 {
1764                                         v3s16 p = i.getNode()->getKey();
1765                                         modified_blocks2.insert(p,
1766                                                         m_env.getMap().getBlockNoCreateNoEx(p));
1767                                 }
1768                                 // Set blocks not sent
1769                                 for(core::list<u16>::Iterator
1770                                                 i = far_players.begin();
1771                                                 i != far_players.end(); i++)
1772                                 {
1773                                         u16 peer_id = *i;
1774                                         RemoteClient *client = getClient(peer_id);
1775                                         if(client==NULL)
1776                                                 continue;
1777                                         client->SetBlocksNotSent(modified_blocks2);
1778                                 }
1779                         }
1780
1781                         delete event;
1782
1783                         /*// Don't send too many at a time
1784                         count++;
1785                         if(count >= 1 && m_unsent_map_edit_queue.size() < 100)
1786                                 break;*/
1787                 }
1788
1789                 if(got_any_events)
1790                 {
1791                         dstream<<"Server: MapEditEvents:"<<std::endl;
1792                         prof.print(dstream);
1793                 }
1794
1795         }
1796
1797         /*
1798                 Send object positions
1799                 TODO: Get rid of MapBlockObjects
1800         */
1801         {
1802                 float &counter = m_objectdata_timer;
1803                 counter += dtime;
1804                 if(counter >= g_settings.getFloat("objectdata_interval"))
1805                 {
1806                         JMutexAutoLock lock1(m_env_mutex);
1807                         JMutexAutoLock lock2(m_con_mutex);
1808
1809                         ScopeProfiler sp(&g_profiler, "Server: sending mbo positions");
1810
1811                         SendObjectData(counter);
1812
1813                         counter = 0.0;
1814                 }
1815         }
1816
1817         /*
1818                 Trigger emergethread (it somehow gets to a non-triggered but
1819                 bysy state sometimes)
1820         */
1821         {
1822                 float &counter = m_emergethread_trigger_timer;
1823                 counter += dtime;
1824                 if(counter >= 2.0)
1825                 {
1826                         counter = 0.0;
1827
1828                         m_emergethread.trigger();
1829                 }
1830         }
1831
1832         // Save map, players and auth stuff
1833         {
1834                 float &counter = m_savemap_timer;
1835                 counter += dtime;
1836                 if(counter >= g_settings.getFloat("server_map_save_interval"))
1837                 {
1838                         counter = 0.0;
1839
1840                         ScopeProfiler sp(&g_profiler, "Server: saving stuff");
1841
1842                         // Auth stuff
1843                         if(m_authmanager.isModified())
1844                                 m_authmanager.save();
1845
1846                         //Bann stuff
1847                         if(m_banmanager.isModified())
1848                                 m_banmanager.save();
1849
1850                         // Map
1851                         JMutexAutoLock lock(m_env_mutex);
1852
1853                         /*// Unload unused data (delete from memory)
1854                         m_env.getMap().unloadUnusedData(
1855                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1856                                         */
1857                         /*u32 deleted_count = m_env.getMap().unloadUnusedData(
1858                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1859                                         */
1860
1861                         // Save only changed parts
1862                         m_env.getMap().save(true);
1863
1864                         /*if(deleted_count > 0)
1865                         {
1866                                 dout_server<<"Server: Unloaded "<<deleted_count
1867                                                 <<" blocks from memory"<<std::endl;
1868                         }*/
1869
1870                         // Save players
1871                         m_env.serializePlayers(m_mapsavedir);
1872
1873                         // Save environment metadata
1874                         m_env.saveMeta(m_mapsavedir);
1875                 }
1876         }
1877 }
1878
1879 void Server::Receive()
1880 {
1881         DSTACK(__FUNCTION_NAME);
1882         u32 data_maxsize = 10000;
1883         Buffer<u8> data(data_maxsize);
1884         u16 peer_id;
1885         u32 datasize;
1886         try{
1887                 {
1888                         JMutexAutoLock conlock(m_con_mutex);
1889                         datasize = m_con.Receive(peer_id, *data, data_maxsize);
1890                 }
1891
1892                 // This has to be called so that the client list gets synced
1893                 // with the peer list of the connection
1894                 handlePeerChanges();
1895
1896                 ProcessData(*data, datasize, peer_id);
1897         }
1898         catch(con::InvalidIncomingDataException &e)
1899         {
1900                 derr_server<<"Server::Receive(): "
1901                                 "InvalidIncomingDataException: what()="
1902                                 <<e.what()<<std::endl;
1903         }
1904         catch(con::PeerNotFoundException &e)
1905         {
1906                 //NOTE: This is not needed anymore
1907
1908                 // The peer has been disconnected.
1909                 // Find the associated player and remove it.
1910
1911                 /*JMutexAutoLock envlock(m_env_mutex);
1912
1913                 dout_server<<"ServerThread: peer_id="<<peer_id
1914                                 <<" has apparently closed connection. "
1915                                 <<"Removing player."<<std::endl;
1916
1917                 m_env.removePlayer(peer_id);*/
1918         }
1919 }
1920
1921 void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
1922 {
1923         DSTACK(__FUNCTION_NAME);
1924         // Environment is locked first.
1925         JMutexAutoLock envlock(m_env_mutex);
1926         JMutexAutoLock conlock(m_con_mutex);
1927
1928         con::Peer *peer;
1929         try{
1930                 peer = m_con.GetPeer(peer_id);
1931         }
1932         catch(con::PeerNotFoundException &e)
1933         {
1934                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: peer "
1935                                 <<peer_id<<" not found"<<std::endl;
1936                 return;
1937         }
1938
1939         // drop player if is ip is banned
1940         if(m_banmanager.isIpBanned(peer->address.serializeString())){
1941                 SendAccessDenied(m_con, peer_id,
1942                                 L"Your ip is banned. Banned name was "
1943                                 +narrow_to_wide(m_banmanager.getBanName(
1944                                         peer->address.serializeString())));
1945                 m_con.deletePeer(peer_id, false);
1946                 return;
1947         }
1948
1949         u8 peer_ser_ver = getClient(peer->id)->serialization_version;
1950
1951         try
1952         {
1953
1954         if(datasize < 2)
1955                 return;
1956
1957         ToServerCommand command = (ToServerCommand)readU16(&data[0]);
1958
1959         if(command == TOSERVER_INIT)
1960         {
1961                 // [0] u16 TOSERVER_INIT
1962                 // [2] u8 SER_FMT_VER_HIGHEST
1963                 // [3] u8[20] player_name
1964                 // [23] u8[28] password <--- can be sent without this, from old versions
1965
1966                 if(datasize < 2+1+PLAYERNAME_SIZE)
1967                         return;
1968
1969                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT from "
1970                                 <<peer->id<<std::endl;
1971
1972                 // First byte after command is maximum supported
1973                 // serialization version
1974                 u8 client_max = data[2];
1975                 u8 our_max = SER_FMT_VER_HIGHEST;
1976                 // Use the highest version supported by both
1977                 u8 deployed = core::min_(client_max, our_max);
1978                 // If it's lower than the lowest supported, give up.
1979                 if(deployed < SER_FMT_VER_LOWEST)
1980                         deployed = SER_FMT_VER_INVALID;
1981
1982                 //peer->serialization_version = deployed;
1983                 getClient(peer->id)->pending_serialization_version = deployed;
1984
1985                 if(deployed == SER_FMT_VER_INVALID)
1986                 {
1987                         derr_server<<DTIME<<"Server: Cannot negotiate "
1988                                         "serialization version with peer "
1989                                         <<peer_id<<std::endl;
1990                         SendAccessDenied(m_con, peer_id,
1991                                         L"Your client is too old (map format)");
1992                         return;
1993                 }
1994
1995                 /*
1996                         Read and check network protocol version
1997                 */
1998
1999                 u16 net_proto_version = 0;
2000                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
2001                 {
2002                         net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
2003                 }
2004
2005                 getClient(peer->id)->net_proto_version = net_proto_version;
2006
2007                 if(net_proto_version == 0)
2008                 {
2009                         SendAccessDenied(m_con, peer_id,
2010                                         L"Your client is too old. Please upgrade.");
2011                         return;
2012                 }
2013
2014                 /* Uhh... this should actually be a warning but let's do it like this */
2015                 if(net_proto_version < 2)
2016                 {
2017                         SendAccessDenied(m_con, peer_id,
2018                                         L"Your client is too old. Please upgrade.");
2019                         return;
2020                 }
2021
2022                 /*
2023                         Set up player
2024                 */
2025
2026                 // Get player name
2027                 char playername[PLAYERNAME_SIZE];
2028                 for(u32 i=0; i<PLAYERNAME_SIZE-1; i++)
2029                 {
2030                         playername[i] = data[3+i];
2031                 }
2032                 playername[PLAYERNAME_SIZE-1] = 0;
2033
2034                 if(playername[0]=='\0')
2035                 {
2036                         derr_server<<DTIME<<"Server: Player has empty name"<<std::endl;
2037                         SendAccessDenied(m_con, peer_id,
2038                                         L"Empty name");
2039                         return;
2040                 }
2041
2042                 if(string_allowed(playername, PLAYERNAME_ALLOWED_CHARS)==false)
2043                 {
2044                         derr_server<<DTIME<<"Server: Player has invalid name"<<std::endl;
2045                         SendAccessDenied(m_con, peer_id,
2046                                         L"Name contains unallowed characters");
2047                         return;
2048                 }
2049
2050                 // Get password
2051                 char password[PASSWORD_SIZE];
2052                 if(datasize < 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE)
2053                 {
2054                         // old version - assume blank password
2055                         password[0] = 0;
2056                 }
2057                 else
2058                 {
2059                                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2060                                 {
2061                                         password[i] = data[23+i];
2062                                 }
2063                                 password[PASSWORD_SIZE-1] = 0;
2064                 }
2065
2066                 std::string checkpwd;
2067                 if(m_authmanager.exists(playername))
2068                 {
2069                         checkpwd = m_authmanager.getPassword(playername);
2070                 }
2071                 else
2072                 {
2073                         checkpwd = g_settings.get("default_password");
2074                 }
2075
2076                 /*dstream<<"Server: Client gave password '"<<password
2077                                 <<"', the correct one is '"<<checkpwd<<"'"<<std::endl;*/
2078
2079                 if(password != checkpwd && m_authmanager.exists(playername))
2080                 {
2081                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2082                                         <<": supplied invalid password for "
2083                                         <<playername<<std::endl;
2084                         SendAccessDenied(m_con, peer_id, L"Invalid password");
2085                         return;
2086                 }
2087
2088                 // Add player to auth manager
2089                 if(m_authmanager.exists(playername) == false)
2090                 {
2091                         derr_server<<DTIME<<"Server: adding player "<<playername
2092                                         <<" to auth manager"<<std::endl;
2093                         m_authmanager.add(playername);
2094                         m_authmanager.setPassword(playername, checkpwd);
2095                         m_authmanager.setPrivs(playername,
2096                                         stringToPrivs(g_settings.get("default_privs")));
2097                         m_authmanager.save();
2098                 }
2099
2100                 // Get player
2101                 Player *player = emergePlayer(playername, password, peer_id);
2102
2103
2104                 /*{
2105                         // DEBUG: Test serialization
2106                         std::ostringstream test_os;
2107                         player->serialize(test_os);
2108                         dstream<<"Player serialization test: \""<<test_os.str()
2109                                         <<"\""<<std::endl;
2110                         std::istringstream test_is(test_os.str());
2111                         player->deSerialize(test_is);
2112                 }*/
2113
2114                 // If failed, cancel
2115                 if(player == NULL)
2116                 {
2117                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2118                                         <<": failed to emerge player"<<std::endl;
2119                         return;
2120                 }
2121
2122                 /*
2123                 // If a client is already connected to the player, cancel
2124                 if(player->peer_id != 0)
2125                 {
2126                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2127                                         <<" tried to connect to "
2128                                         "an already connected player (peer_id="
2129                                         <<player->peer_id<<")"<<std::endl;
2130                         return;
2131                 }
2132                 // Set client of player
2133                 player->peer_id = peer_id;
2134                 */
2135
2136                 // Check if player doesn't exist
2137                 if(player == NULL)
2138                         throw con::InvalidIncomingDataException
2139                                 ("Server::ProcessData(): INIT: Player doesn't exist");
2140
2141                 /*// update name if it was supplied
2142                 if(datasize >= 20+3)
2143                 {
2144                         data[20+3-1] = 0;
2145                         player->updateName((const char*)&data[3]);
2146                 }*/
2147
2148                 /*
2149                         Answer with a TOCLIENT_INIT
2150                 */
2151                 {
2152                         SharedBuffer<u8> reply(2+1+6+8);
2153                         writeU16(&reply[0], TOCLIENT_INIT);
2154                         writeU8(&reply[2], deployed);
2155                         writeV3S16(&reply[2+1], floatToInt(player->getPosition()+v3f(0,BS/2,0), BS));
2156                         writeU64(&reply[2+1+6], m_env.getServerMap().getSeed());
2157
2158                         // Send as reliable
2159                         m_con.Send(peer_id, 0, reply, true);
2160                 }
2161
2162                 /*
2163                         Send complete position information
2164                 */
2165                 SendMovePlayer(player);
2166
2167                 return;
2168         }
2169
2170         if(command == TOSERVER_INIT2)
2171         {
2172                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT2 from "
2173                                 <<peer->id<<std::endl;
2174
2175
2176                 getClient(peer->id)->serialization_version
2177                                 = getClient(peer->id)->pending_serialization_version;
2178
2179                 /*
2180                         Send some initialization data
2181                 */
2182
2183                 // Send player info to all players
2184                 SendPlayerInfos();
2185
2186                 // Send inventory to player
2187                 UpdateCrafting(peer->id);
2188                 SendInventory(peer->id);
2189
2190                 // Send player items to all players
2191                 SendPlayerItems();
2192
2193                 // Send HP
2194                 {
2195                         Player *player = m_env.getPlayer(peer_id);
2196                         SendPlayerHP(player);
2197                 }
2198
2199                 // Send time of day
2200                 {
2201                         SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
2202                                         m_env.getTimeOfDay());
2203                         m_con.Send(peer->id, 0, data, true);
2204                 }
2205
2206                 // Send information about server to player in chat
2207                 SendChatMessage(peer_id, getStatusString());
2208
2209                 // Send information about joining in chat
2210                 {
2211                         std::wstring name = L"unknown";
2212                         Player *player = m_env.getPlayer(peer_id);
2213                         if(player != NULL)
2214                                 name = narrow_to_wide(player->getName());
2215
2216                         std::wstring message;
2217                         message += L"*** ";
2218                         message += name;
2219                         message += L" joined game";
2220                         BroadcastChatMessage(message);
2221                 }
2222
2223                 // Warnings about protocol version can be issued here
2224                 /*if(getClient(peer->id)->net_proto_version == 0)
2225                 {
2226                         SendChatMessage(peer_id, L"# Server: NOTE: YOUR CLIENT IS OLD AND DOES NOT WORK PROPERLY WITH THIS SERVER");
2227                 }*/
2228
2229                 return;
2230         }
2231
2232         if(peer_ser_ver == SER_FMT_VER_INVALID)
2233         {
2234                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: Peer"
2235                                 " serialization format invalid or not initialized."
2236                                 " Skipping incoming command="<<command<<std::endl;
2237                 return;
2238         }
2239
2240         Player *player = m_env.getPlayer(peer_id);
2241
2242         if(player == NULL){
2243                 derr_server<<"Server::ProcessData(): Cancelling: "
2244                                 "No player for peer_id="<<peer_id
2245                                 <<std::endl;
2246                 return;
2247         }
2248         if(command == TOSERVER_PLAYERPOS)
2249         {
2250                 if(datasize < 2+12+12+4+4)
2251                         return;
2252
2253                 u32 start = 0;
2254                 v3s32 ps = readV3S32(&data[start+2]);
2255                 v3s32 ss = readV3S32(&data[start+2+12]);
2256                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
2257                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
2258                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
2259                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
2260                 pitch = wrapDegrees(pitch);
2261                 yaw = wrapDegrees(yaw);
2262                 player->setPosition(position);
2263                 player->setSpeed(speed);
2264                 player->setPitch(pitch);
2265                 player->setYaw(yaw);
2266
2267                 /*dout_server<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
2268                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
2269                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
2270         }
2271         else if(command == TOSERVER_GOTBLOCKS)
2272         {
2273                 if(datasize < 2+1)
2274                         return;
2275
2276                 /*
2277                         [0] u16 command
2278                         [2] u8 count
2279                         [3] v3s16 pos_0
2280                         [3+6] v3s16 pos_1
2281                         ...
2282                 */
2283
2284                 u16 count = data[2];
2285                 for(u16 i=0; i<count; i++)
2286                 {
2287                         if((s16)datasize < 2+1+(i+1)*6)
2288                                 throw con::InvalidIncomingDataException
2289                                         ("GOTBLOCKS length is too short");
2290                         v3s16 p = readV3S16(&data[2+1+i*6]);
2291                         /*dstream<<"Server: GOTBLOCKS ("
2292                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2293                         RemoteClient *client = getClient(peer_id);
2294                         client->GotBlock(p);
2295                 }
2296         }
2297         else if(command == TOSERVER_DELETEDBLOCKS)
2298         {
2299                 if(datasize < 2+1)
2300                         return;
2301
2302                 /*
2303                         [0] u16 command
2304                         [2] u8 count
2305                         [3] v3s16 pos_0
2306                         [3+6] v3s16 pos_1
2307                         ...
2308                 */
2309
2310                 u16 count = data[2];
2311                 for(u16 i=0; i<count; i++)
2312                 {
2313                         if((s16)datasize < 2+1+(i+1)*6)
2314                                 throw con::InvalidIncomingDataException
2315                                         ("DELETEDBLOCKS length is too short");
2316                         v3s16 p = readV3S16(&data[2+1+i*6]);
2317                         /*dstream<<"Server: DELETEDBLOCKS ("
2318                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2319                         RemoteClient *client = getClient(peer_id);
2320                         client->SetBlockNotSent(p);
2321                 }
2322         }
2323         else if(command == TOSERVER_CLICK_OBJECT)
2324         {
2325                 if(datasize < 13)
2326                         return;
2327
2328                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2329                         return;
2330
2331                 /*
2332                         [0] u16 command
2333                         [2] u8 button (0=left, 1=right)
2334                         [3] v3s16 block
2335                         [9] s16 id
2336                         [11] u16 item
2337                 */
2338                 u8 button = readU8(&data[2]);
2339                 v3s16 p;
2340                 p.X = readS16(&data[3]);
2341                 p.Y = readS16(&data[5]);
2342                 p.Z = readS16(&data[7]);
2343                 s16 id = readS16(&data[9]);
2344                 //u16 item_i = readU16(&data[11]);
2345
2346                 MapBlock *block = NULL;
2347                 try
2348                 {
2349                         block = m_env.getMap().getBlockNoCreate(p);
2350                 }
2351                 catch(InvalidPositionException &e)
2352                 {
2353                         derr_server<<"CLICK_OBJECT block not found"<<std::endl;
2354                         return;
2355                 }
2356
2357                 MapBlockObject *obj = block->getObject(id);
2358
2359                 if(obj == NULL)
2360                 {
2361                         derr_server<<"CLICK_OBJECT object not found"<<std::endl;
2362                         return;
2363                 }
2364
2365                 //TODO: Check that object is reasonably close
2366
2367                 // Left click
2368                 if(button == 0)
2369                 {
2370                         InventoryList *ilist = player->inventory.getList("main");
2371                         if(g_settings.getBool("creative_mode") == false && ilist != NULL)
2372                         {
2373
2374                                 // Skip if inventory has no free space
2375                                 if(ilist->getUsedSlots() == ilist->getSize())
2376                                 {
2377                                         dout_server<<"Player inventory has no free space"<<std::endl;
2378                                         return;
2379                                 }
2380
2381                                 /*
2382                                         Create the inventory item
2383                                 */
2384                                 InventoryItem *item = NULL;
2385                                 // If it is an item-object, take the item from it
2386                                 if(obj->getTypeId() == MAPBLOCKOBJECT_TYPE_ITEM)
2387                                 {
2388                                         item = ((ItemObject*)obj)->createInventoryItem();
2389                                 }
2390                                 // Else create an item of the object
2391                                 else
2392                                 {
2393                                         item = new MapBlockObjectItem
2394                                                         (obj->getInventoryString());
2395                                 }
2396
2397                                 // Add to inventory and send inventory
2398                                 ilist->addItem(item);
2399                                 UpdateCrafting(player->peer_id);
2400                                 SendInventory(player->peer_id);
2401                         }
2402
2403                         // Remove from block
2404                         block->removeObject(id);
2405                 }
2406         }
2407         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
2408         {
2409                 if(datasize < 7)
2410                         return;
2411
2412                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2413                         return;
2414
2415                 /*
2416                         length: 7
2417                         [0] u16 command
2418                         [2] u8 button (0=left, 1=right)
2419                         [3] u16 id
2420                         [5] u16 item
2421                 */
2422                 u8 button = readU8(&data[2]);
2423                 u16 id = readS16(&data[3]);
2424                 u16 item_i = readU16(&data[11]);
2425
2426                 ServerActiveObject *obj = m_env.getActiveObject(id);
2427
2428                 if(obj == NULL)
2429                 {
2430                         derr_server<<"Server: CLICK_ACTIVEOBJECT: object not found"
2431                                         <<std::endl;
2432                         return;
2433                 }
2434
2435                 // Skip if object has been removed
2436                 if(obj->m_removed)
2437                         return;
2438
2439                 //TODO: Check that object is reasonably close
2440
2441                 // Left click, pick object up (usually)
2442                 if(button == 0)
2443                 {
2444                         /*
2445                                 Try creating inventory item
2446                         */
2447                         InventoryItem *item = obj->createPickedUpItem();
2448
2449                         if(item)
2450                         {
2451                                 InventoryList *ilist = player->inventory.getList("main");
2452                                 if(ilist != NULL)
2453                                 {
2454                                         if(g_settings.getBool("creative_mode") == false)
2455                                         {
2456                                                 // Skip if inventory has no free space
2457                                                 if(ilist->roomForItem(item) == false)
2458                                                 {
2459                                                         dout_server<<"Player inventory has no free space"<<std::endl;
2460                                                         return;
2461                                                 }
2462
2463                                                 // Add to inventory and send inventory
2464                                                 ilist->addItem(item);
2465                                                 UpdateCrafting(player->peer_id);
2466                                                 SendInventory(player->peer_id);
2467                                         }
2468
2469                                         // Remove object from environment
2470                                         obj->m_removed = true;
2471                                 }
2472                         }
2473                         else
2474                         {
2475                                 /*
2476                                         Item cannot be picked up. Punch it instead.
2477                                 */
2478
2479                                 ToolItem *titem = NULL;
2480                                 std::string toolname = "";
2481
2482                                 InventoryList *mlist = player->inventory.getList("main");
2483                                 if(mlist != NULL)
2484                                 {
2485                                         InventoryItem *item = mlist->getItem(item_i);
2486                                         if(item && (std::string)item->getName() == "ToolItem")
2487                                         {
2488                                                 titem = (ToolItem*)item;
2489                                                 toolname = titem->getToolName();
2490                                         }
2491                                 }
2492
2493                                 v3f playerpos = player->getPosition();
2494                                 v3f objpos = obj->getBasePosition();
2495                                 v3f dir = (objpos - playerpos).normalize();
2496
2497                                 u16 wear = obj->punch(toolname, dir);
2498
2499                                 if(titem)
2500                                 {
2501                                         bool weared_out = titem->addWear(wear);
2502                                         if(weared_out)
2503                                                 mlist->deleteItem(item_i);
2504                                         SendInventory(player->peer_id);
2505                                 }
2506                         }
2507                 }
2508                 // Right click, do something with object
2509                 if(button == 1)
2510                 {
2511                         // Track hp changes super-crappily
2512                         u16 oldhp = player->hp;
2513
2514                         // Do stuff
2515                         obj->rightClick(player);
2516
2517                         // Send back stuff
2518                         if(player->hp != oldhp)
2519                         {
2520                                 SendPlayerHP(player);
2521                         }
2522                 }
2523         }
2524         else if(command == TOSERVER_GROUND_ACTION)
2525         {
2526                 if(datasize < 17)
2527                         return;
2528                 /*
2529                         length: 17
2530                         [0] u16 command
2531                         [2] u8 action
2532                         [3] v3s16 nodepos_undersurface
2533                         [9] v3s16 nodepos_abovesurface
2534                         [15] u16 item
2535                         actions:
2536                         0: start digging
2537                         1: place block
2538                         2: stop digging (all parameters ignored)
2539                         3: digging completed
2540                 */
2541                 u8 action = readU8(&data[2]);
2542                 v3s16 p_under;
2543                 p_under.X = readS16(&data[3]);
2544                 p_under.Y = readS16(&data[5]);
2545                 p_under.Z = readS16(&data[7]);
2546                 v3s16 p_over;
2547                 p_over.X = readS16(&data[9]);
2548                 p_over.Y = readS16(&data[11]);
2549                 p_over.Z = readS16(&data[13]);
2550                 u16 item_i = readU16(&data[15]);
2551
2552                 //TODO: Check that target is reasonably close
2553
2554                 /*
2555                         0: start digging
2556                 */
2557                 if(action == 0)
2558                 {
2559                         /*
2560                                 NOTE: This can be used in the future to check if
2561                                 somebody is cheating, by checking the timing.
2562                         */
2563                 } // action == 0
2564
2565                 /*
2566                         2: stop digging
2567                 */
2568                 else if(action == 2)
2569                 {
2570 #if 0
2571                         RemoteClient *client = getClient(peer->id);
2572                         JMutexAutoLock digmutex(client->m_dig_mutex);
2573                         client->m_dig_tool_item = -1;
2574 #endif
2575                 }
2576
2577                 /*
2578                         3: Digging completed
2579                 */
2580                 else if(action == 3)
2581                 {
2582                         // Mandatory parameter; actually used for nothing
2583                         core::map<v3s16, MapBlock*> modified_blocks;
2584
2585                         content_t material = CONTENT_IGNORE;
2586                         u8 mineral = MINERAL_NONE;
2587
2588                         bool cannot_remove_node = false;
2589
2590                         try
2591                         {
2592                                 MapNode n = m_env.getMap().getNode(p_under);
2593                                 // Get mineral
2594                                 mineral = n.getMineral();
2595                                 // Get material at position
2596                                 material = n.getContent();
2597                                 // If not yet cancelled
2598                                 if(cannot_remove_node == false)
2599                                 {
2600                                         // If it's not diggable, do nothing
2601                                         if(content_diggable(material) == false)
2602                                         {
2603                                                 derr_server<<"Server: Not finishing digging: "
2604                                                                 <<"Node not diggable"
2605                                                                 <<std::endl;
2606                                                 cannot_remove_node = true;
2607                                         }
2608                                 }
2609                                 // If not yet cancelled
2610                                 if(cannot_remove_node == false)
2611                                 {
2612                                         // Get node metadata
2613                                         NodeMetadata *meta = m_env.getMap().getNodeMetadata(p_under);
2614                                         if(meta && meta->nodeRemovalDisabled() == true)
2615                                         {
2616                                                 derr_server<<"Server: Not finishing digging: "
2617                                                                 <<"Node metadata disables removal"
2618                                                                 <<std::endl;
2619                                                 cannot_remove_node = true;
2620                                         }
2621                                 }
2622                         }
2623                         catch(InvalidPositionException &e)
2624                         {
2625                                 derr_server<<"Server: Not finishing digging: Node not found."
2626                                                 <<" Adding block to emerge queue."
2627                                                 <<std::endl;
2628                                 m_emerge_queue.addBlock(peer_id,
2629                                                 getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2630                                 cannot_remove_node = true;
2631                         }
2632
2633                         // Make sure the player is allowed to do it
2634                         if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2635                         {
2636                                 dstream<<"Player "<<player->getName()<<" cannot remove node"
2637                                                 <<" because privileges are "<<getPlayerPrivs(player)
2638                                                 <<std::endl;
2639                                 cannot_remove_node = true;
2640                         }
2641
2642                         /*
2643                                 If node can't be removed, set block to be re-sent to
2644                                 client and quit.
2645                         */
2646                         if(cannot_remove_node)
2647                         {
2648                                 derr_server<<"Server: Not finishing digging."<<std::endl;
2649
2650                                 // Client probably has wrong data.
2651                                 // Set block not sent, so that client will get
2652                                 // a valid one.
2653                                 dstream<<"Client "<<peer_id<<" tried to dig "
2654                                                 <<"node; but node cannot be removed."
2655                                                 <<" setting MapBlock not sent."<<std::endl;
2656                                 RemoteClient *client = getClient(peer_id);
2657                                 v3s16 blockpos = getNodeBlockPos(p_under);
2658                                 client->SetBlockNotSent(blockpos);
2659
2660                                 return;
2661                         }
2662
2663                         /*
2664                                 Send the removal to all close-by players.
2665                                 - If other player is close, send REMOVENODE
2666                                 - Otherwise set blocks not sent
2667                         */
2668                         core::list<u16> far_players;
2669                         sendRemoveNode(p_under, peer_id, &far_players, 30);
2670
2671                         /*
2672                                 Update and send inventory
2673                         */
2674
2675                         if(g_settings.getBool("creative_mode") == false)
2676                         {
2677                                 /*
2678                                         Wear out tool
2679                                 */
2680                                 InventoryList *mlist = player->inventory.getList("main");
2681                                 if(mlist != NULL)
2682                                 {
2683                                         InventoryItem *item = mlist->getItem(item_i);
2684                                         if(item && (std::string)item->getName() == "ToolItem")
2685                                         {
2686                                                 ToolItem *titem = (ToolItem*)item;
2687                                                 std::string toolname = titem->getToolName();
2688
2689                                                 // Get digging properties for material and tool
2690                                                 DiggingProperties prop =
2691                                                                 getDiggingProperties(material, toolname);
2692
2693                                                 if(prop.diggable == false)
2694                                                 {
2695                                                         derr_server<<"Server: WARNING: Player digged"
2696                                                                         <<" with impossible material + tool"
2697                                                                         <<" combination"<<std::endl;
2698                                                 }
2699
2700                                                 bool weared_out = titem->addWear(prop.wear);
2701
2702                                                 if(weared_out)
2703                                                 {
2704                                                         mlist->deleteItem(item_i);
2705                                                 }
2706                                         }
2707                                 }
2708
2709                                 /*
2710                                         Add dug item to inventory
2711                                 */
2712
2713                                 InventoryItem *item = NULL;
2714
2715                                 if(mineral != MINERAL_NONE)
2716                                         item = getDiggedMineralItem(mineral);
2717
2718                                 // If not mineral
2719                                 if(item == NULL)
2720                                 {
2721                                         std::string &dug_s = content_features(material).dug_item;
2722                                         if(dug_s != "")
2723                                         {
2724                                                 std::istringstream is(dug_s, std::ios::binary);
2725                                                 item = InventoryItem::deSerialize(is);
2726                                         }
2727                                 }
2728
2729                                 if(item != NULL)
2730                                 {
2731                                         // Add a item to inventory
2732                                         player->inventory.addItem("main", item);
2733
2734                                         // Send inventory
2735                                         UpdateCrafting(player->peer_id);
2736                                         SendInventory(player->peer_id);
2737                                 }
2738
2739                                 item = NULL;
2740
2741                                 if(mineral != MINERAL_NONE)
2742                                   item = getDiggedMineralItem(mineral);
2743
2744                                 // If not mineral
2745                                 if(item == NULL)
2746                                 {
2747                                         std::string &extra_dug_s = content_features(material).extra_dug_item;
2748                                         s32 extra_rarity = content_features(material).extra_dug_item_rarity;
2749                                         if(extra_dug_s != "" && extra_rarity != 0
2750                                            && myrand() % extra_rarity == 0)
2751                                         {
2752                                                 std::istringstream is(extra_dug_s, std::ios::binary);
2753                                                 item = InventoryItem::deSerialize(is);
2754                                         }
2755                                 }
2756
2757                                 if(item != NULL)
2758                                 {
2759                                         // Add a item to inventory
2760                                         player->inventory.addItem("main", item);
2761
2762                                         // Send inventory
2763                                         UpdateCrafting(player->peer_id);
2764                                         SendInventory(player->peer_id);
2765                                 }
2766                         }
2767
2768                         /*
2769                                 Remove the node
2770                                 (this takes some time so it is done after the quick stuff)
2771                         */
2772                         {
2773                                 MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2774
2775                                 m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
2776                         }
2777                         /*
2778                                 Set blocks not sent to far players
2779                         */
2780                         for(core::list<u16>::Iterator
2781                                         i = far_players.begin();
2782                                         i != far_players.end(); i++)
2783                         {
2784                                 u16 peer_id = *i;
2785                                 RemoteClient *client = getClient(peer_id);
2786                                 if(client==NULL)
2787                                         continue;
2788                                 client->SetBlocksNotSent(modified_blocks);
2789                         }
2790                 }
2791
2792                 /*
2793                         1: place block
2794                 */
2795                 else if(action == 1)
2796                 {
2797
2798                         InventoryList *ilist = player->inventory.getList("main");
2799                         if(ilist == NULL)
2800                                 return;
2801
2802                         // Get item
2803                         InventoryItem *item = ilist->getItem(item_i);
2804
2805                         // If there is no item, it is not possible to add it anywhere
2806                         if(item == NULL)
2807                                 return;
2808
2809                         /*
2810                                 Handle material items
2811                         */
2812                         if(std::string("MaterialItem") == item->getName())
2813                         {
2814                                 try{
2815                                         // Don't add a node if this is not a free space
2816                                         MapNode n2 = m_env.getMap().getNode(p_over);
2817                                         bool no_enough_privs =
2818                                                         ((getPlayerPrivs(player) & PRIV_BUILD)==0);
2819                                         if(no_enough_privs)
2820                                                 dstream<<"Player "<<player->getName()<<" cannot add node"
2821                                                         <<" because privileges are "<<getPlayerPrivs(player)
2822                                                         <<std::endl;
2823
2824                                         if(content_features(n2).buildable_to == false
2825                                                 || no_enough_privs)
2826                                         {
2827                                                 // Client probably has wrong data.
2828                                                 // Set block not sent, so that client will get
2829                                                 // a valid one.
2830                                                 dstream<<"Client "<<peer_id<<" tried to place"
2831                                                                 <<" node in invalid position; setting"
2832                                                                 <<" MapBlock not sent."<<std::endl;
2833                                                 RemoteClient *client = getClient(peer_id);
2834                                                 v3s16 blockpos = getNodeBlockPos(p_over);
2835                                                 client->SetBlockNotSent(blockpos);
2836                                                 return;
2837                                         }
2838                                 }
2839                                 catch(InvalidPositionException &e)
2840                                 {
2841                                         derr_server<<"Server: Ignoring ADDNODE: Node not found"
2842                                                         <<" Adding block to emerge queue."
2843                                                         <<std::endl;
2844                                         m_emerge_queue.addBlock(peer_id,
2845                                                         getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2846                                         return;
2847                                 }
2848
2849                                 // Reset build time counter
2850                                 getClient(peer->id)->m_time_from_building = 0.0;
2851
2852                                 // Create node data
2853                                 MaterialItem *mitem = (MaterialItem*)item;
2854                                 MapNode n;
2855                                 n.setContent(mitem->getMaterial());
2856
2857                                 // Calculate direction for wall mounted stuff
2858                                 if(content_features(n).wall_mounted)
2859                                         n.param2 = packDir(p_under - p_over);
2860
2861                                 // Calculate the direction for furnaces and chests and stuff
2862                                 if(content_features(n).param_type == CPT_FACEDIR_SIMPLE)
2863                                 {
2864                                         v3f playerpos = player->getPosition();
2865                                         v3f blockpos = intToFloat(p_over, BS) - playerpos;
2866                                         blockpos = blockpos.normalize();
2867                                         n.param1 = 0;
2868                                         if (fabs(blockpos.X) > fabs(blockpos.Z)) {
2869                                                 if (blockpos.X < 0)
2870                                                         n.param1 = 3;
2871                                                 else
2872                                                         n.param1 = 1;
2873                                         } else {
2874                                                 if (blockpos.Z < 0)
2875                                                         n.param1 = 2;
2876                                                 else
2877                                                         n.param1 = 0;
2878                                         }
2879                                 }
2880
2881                                 /*
2882                                         Send to all close-by players
2883                                 */
2884                                 core::list<u16> far_players;
2885                                 sendAddNode(p_over, n, 0, &far_players, 30);
2886
2887                                 /*
2888                                         Handle inventory
2889                                 */
2890                                 InventoryList *ilist = player->inventory.getList("main");
2891                                 if(g_settings.getBool("creative_mode") == false && ilist)
2892                                 {
2893                                         // Remove from inventory and send inventory
2894                                         if(mitem->getCount() == 1)
2895                                                 ilist->deleteItem(item_i);
2896                                         else
2897                                                 mitem->remove(1);
2898                                         // Send inventory
2899                                         UpdateCrafting(peer_id);
2900                                         SendInventory(peer_id);
2901                                 }
2902
2903                                 /*
2904                                         Add node.
2905
2906                                         This takes some time so it is done after the quick stuff
2907                                 */
2908                                 core::map<v3s16, MapBlock*> modified_blocks;
2909                                 {
2910                                         MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2911
2912                                         m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
2913                                 }
2914                                 /*
2915                                         Set blocks not sent to far players
2916                                 */
2917                                 for(core::list<u16>::Iterator
2918                                                 i = far_players.begin();
2919                                                 i != far_players.end(); i++)
2920                                 {
2921                                         u16 peer_id = *i;
2922                                         RemoteClient *client = getClient(peer_id);
2923                                         if(client==NULL)
2924                                                 continue;
2925                                         client->SetBlocksNotSent(modified_blocks);
2926                                 }
2927
2928                                 /*
2929                                         Calculate special events
2930                                 */
2931
2932                                 /*if(n.d == CONTENT_MESE)
2933                                 {
2934                                         u32 count = 0;
2935                                         for(s16 z=-1; z<=1; z++)
2936                                         for(s16 y=-1; y<=1; y++)
2937                                         for(s16 x=-1; x<=1; x++)
2938                                         {
2939
2940                                         }
2941                                 }*/
2942                         }
2943                         /*
2944                                 Place other item (not a block)
2945                         */
2946                         else
2947                         {
2948                                 v3s16 blockpos = getNodeBlockPos(p_over);
2949
2950                                 /*
2951                                         Check that the block is loaded so that the item
2952                                         can properly be added to the static list too
2953                                 */
2954                                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
2955                                 if(block==NULL)
2956                                 {
2957                                         derr_server<<"Error while placing object: "
2958                                                         "block not found"<<std::endl;
2959                                         return;
2960                                 }
2961
2962                                 /*
2963                                         If in creative mode, item dropping is disabled unless
2964                                         player has build privileges
2965                                 */
2966                                 if(g_settings.getBool("creative_mode") &&
2967                                         (getPlayerPrivs(player) & PRIV_BUILD) == 0)
2968                                 {
2969                                         derr_server<<"Not allowing player to drop item: "
2970                                                         "creative mode and no build privs"<<std::endl;
2971                                         return;
2972                                 }
2973
2974                                 dout_server<<"Placing a miscellaneous item on map"
2975                                                 <<std::endl;
2976
2977                                 // Calculate a position for it
2978                                 v3f pos = intToFloat(p_over, BS);
2979                                 //pos.Y -= BS*0.45;
2980                                 pos.Y -= BS*0.25; // let it drop a bit
2981                                 // Randomize a bit
2982                                 pos.X += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2983                                 pos.Z += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2984
2985                                 /*
2986                                         Create the object
2987                                 */
2988                                 ServerActiveObject *obj = item->createSAO(&m_env, 0, pos);
2989
2990                                 if(obj == NULL)
2991                                 {
2992                                         derr_server<<"WARNING: item resulted in NULL object, "
2993                                                         <<"not placing onto map"
2994                                                         <<std::endl;
2995                                 }
2996                                 else
2997                                 {
2998                                         // Add the object to the environment
2999                                         m_env.addActiveObject(obj);
3000
3001                                         dout_server<<"Placed object"<<std::endl;
3002
3003                                         if(g_settings.getBool("creative_mode") == false)
3004                                         {
3005                                                 // Delete the right amount of items from the slot
3006                                                 u16 dropcount = item->getDropCount();
3007
3008                                                 // Delete item if all gone
3009                                                 if(item->getCount() <= dropcount)
3010                                                 {
3011                                                         if(item->getCount() < dropcount)
3012                                                                 dstream<<"WARNING: Server: dropped more items"
3013                                                                                 <<" than the slot contains"<<std::endl;
3014
3015                                                         InventoryList *ilist = player->inventory.getList("main");
3016                                                         if(ilist)
3017                                                                 // Remove from inventory and send inventory
3018                                                                 ilist->deleteItem(item_i);
3019                                                 }
3020                                                 // Else decrement it
3021                                                 else
3022                                                         item->remove(dropcount);
3023
3024                                                 // Send inventory
3025                                                 UpdateCrafting(peer_id);
3026                                                 SendInventory(peer_id);
3027                                         }
3028                                 }
3029                         }
3030
3031                 } // action == 1
3032
3033                 /*
3034                         Catch invalid actions
3035                 */
3036                 else
3037                 {
3038                         derr_server<<"WARNING: Server: Invalid action "
3039                                         <<action<<std::endl;
3040                 }
3041         }
3042 #if 0
3043         else if(command == TOSERVER_RELEASE)
3044         {
3045                 if(datasize < 3)
3046                         return;
3047                 /*
3048                         length: 3
3049                         [0] u16 command
3050                         [2] u8 button
3051                 */
3052                 dstream<<"TOSERVER_RELEASE ignored"<<std::endl;
3053         }
3054 #endif
3055         else if(command == TOSERVER_SIGNTEXT)
3056         {
3057                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3058                         return;
3059                 /*
3060                         u16 command
3061                         v3s16 blockpos
3062                         s16 id
3063                         u16 textlen
3064                         textdata
3065                 */
3066                 std::string datastring((char*)&data[2], datasize-2);
3067                 std::istringstream is(datastring, std::ios_base::binary);
3068                 u8 buf[6];
3069                 // Read stuff
3070                 is.read((char*)buf, 6);
3071                 v3s16 blockpos = readV3S16(buf);
3072                 is.read((char*)buf, 2);
3073                 s16 id = readS16(buf);
3074                 is.read((char*)buf, 2);
3075                 u16 textlen = readU16(buf);
3076                 std::string text;
3077                 for(u16 i=0; i<textlen; i++)
3078                 {
3079                         is.read((char*)buf, 1);
3080                         text += (char)buf[0];
3081                 }
3082
3083                 MapBlock *block = NULL;
3084                 try
3085                 {
3086                         block = m_env.getMap().getBlockNoCreate(blockpos);
3087                 }
3088                 catch(InvalidPositionException &e)
3089                 {
3090                         derr_server<<"Error while setting sign text: "
3091                                         "block not found"<<std::endl;
3092                         return;
3093                 }
3094
3095                 MapBlockObject *obj = block->getObject(id);
3096                 if(obj == NULL)
3097                 {
3098                         derr_server<<"Error while setting sign text: "
3099                                         "object not found"<<std::endl;
3100                         return;
3101                 }
3102
3103                 if(obj->getTypeId() != MAPBLOCKOBJECT_TYPE_SIGN)
3104                 {
3105                         derr_server<<"Error while setting sign text: "
3106                                         "object is not a sign"<<std::endl;
3107                         return;
3108                 }
3109
3110                 ((SignObject*)obj)->setText(text);
3111
3112                 obj->getBlock()->setChangedFlag();
3113         }
3114         else if(command == TOSERVER_SIGNNODETEXT)
3115         {
3116                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3117                         return;
3118                 /*
3119                         u16 command
3120                         v3s16 p
3121                         u16 textlen
3122                         textdata
3123                 */
3124                 std::string datastring((char*)&data[2], datasize-2);
3125                 std::istringstream is(datastring, std::ios_base::binary);
3126                 u8 buf[6];
3127                 // Read stuff
3128                 is.read((char*)buf, 6);
3129                 v3s16 p = readV3S16(buf);
3130                 is.read((char*)buf, 2);
3131                 u16 textlen = readU16(buf);
3132                 std::string text;
3133                 for(u16 i=0; i<textlen; i++)
3134                 {
3135                         is.read((char*)buf, 1);
3136                         text += (char)buf[0];
3137                 }
3138
3139                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3140                 if(!meta)
3141                         return;
3142                 if(meta->typeId() != CONTENT_SIGN_WALL)
3143                         return;
3144                 SignNodeMetadata *signmeta = (SignNodeMetadata*)meta;
3145                 signmeta->setText(text);
3146
3147                 v3s16 blockpos = getNodeBlockPos(p);
3148                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
3149                 if(block)
3150                 {
3151                         block->setChangedFlag();
3152                 }
3153
3154                 for(core::map<u16, RemoteClient*>::Iterator
3155                         i = m_clients.getIterator();
3156                         i.atEnd()==false; i++)
3157                 {
3158                         RemoteClient *client = i.getNode()->getValue();
3159                         client->SetBlockNotSent(blockpos);
3160                 }
3161         }
3162         else if(command == TOSERVER_INVENTORY_ACTION)
3163         {
3164                 /*// Ignore inventory changes if in creative mode
3165                 if(g_settings.getBool("creative_mode") == true)
3166                 {
3167                         dstream<<"TOSERVER_INVENTORY_ACTION: ignoring in creative mode"
3168                                         <<std::endl;
3169                         return;
3170                 }*/
3171                 // Strip command and create a stream
3172                 std::string datastring((char*)&data[2], datasize-2);
3173                 dstream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
3174                 std::istringstream is(datastring, std::ios_base::binary);
3175                 // Create an action
3176                 InventoryAction *a = InventoryAction::deSerialize(is);
3177                 if(a != NULL)
3178                 {
3179                         // Create context
3180                         InventoryContext c;
3181                         c.current_player = player;
3182
3183                         /*
3184                                 Handle craftresult specially if not in creative mode
3185                         */
3186                         bool disable_action = false;
3187                         if(a->getType() == IACTION_MOVE
3188                                         && g_settings.getBool("creative_mode") == false)
3189                         {
3190                                 IMoveAction *ma = (IMoveAction*)a;
3191                                 if(ma->to_inv == "current_player" &&
3192                                                 ma->from_inv == "current_player")
3193                                 {
3194                                         InventoryList *rlist = player->inventory.getList("craftresult");
3195                                         assert(rlist);
3196                                         InventoryList *clist = player->inventory.getList("craft");
3197                                         assert(clist);
3198                                         InventoryList *mlist = player->inventory.getList("main");
3199                                         assert(mlist);
3200                                         /*
3201                                                 Craftresult is no longer preview if something
3202                                                 is moved into it
3203                                         */
3204                                         if(ma->to_list == "craftresult"
3205                                                         && ma->from_list != "craftresult")
3206                                         {
3207                                                 // If it currently is a preview, remove
3208                                                 // its contents
3209                                                 if(player->craftresult_is_preview)
3210                                                 {
3211                                                         rlist->deleteItem(0);
3212                                                 }
3213                                                 player->craftresult_is_preview = false;
3214                                         }
3215                                         /*
3216                                                 Crafting takes place if this condition is true.
3217                                         */
3218                                         if(player->craftresult_is_preview &&
3219                                                         ma->from_list == "craftresult")
3220                                         {
3221                                                 player->craftresult_is_preview = false;
3222                                                 clist->decrementMaterials(1);
3223                                         }
3224                                         /*
3225                                                 If the craftresult is placed on itself, move it to
3226                                                 main inventory instead of doing the action
3227                                         */
3228                                         if(ma->to_list == "craftresult"
3229                                                         && ma->from_list == "craftresult")
3230                                         {
3231                                                 disable_action = true;
3232
3233                                                 InventoryItem *item1 = rlist->changeItem(0, NULL);
3234                                                 mlist->addItem(item1);
3235                                         }
3236                                 }
3237                                 // Disallow moving items if not allowed to build
3238                                 else if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3239                                         return;
3240                         }
3241
3242                         if(disable_action == false)
3243                         {
3244                                 // Feed action to player inventory
3245                                 a->apply(&c, this);
3246                                 // Eat the action
3247                                 delete a;
3248                         }
3249                         else
3250                         {
3251                                 // Send inventory
3252                                 UpdateCrafting(player->peer_id);
3253                                 SendInventory(player->peer_id);
3254                         }
3255                 }
3256                 else
3257                 {
3258                         dstream<<"TOSERVER_INVENTORY_ACTION: "
3259                                         <<"InventoryAction::deSerialize() returned NULL"
3260                                         <<std::endl;
3261                 }
3262         }
3263         else if(command == TOSERVER_CHAT_MESSAGE)
3264         {
3265                 /*
3266                         u16 command
3267                         u16 length
3268                         wstring message
3269                 */
3270                 u8 buf[6];
3271                 std::string datastring((char*)&data[2], datasize-2);
3272                 std::istringstream is(datastring, std::ios_base::binary);
3273
3274                 // Read stuff
3275                 is.read((char*)buf, 2);
3276                 u16 len = readU16(buf);
3277
3278                 std::wstring message;
3279                 for(u16 i=0; i<len; i++)
3280                 {
3281                         is.read((char*)buf, 2);
3282                         message += (wchar_t)readU16(buf);
3283                 }
3284
3285                 // Get player name of this client
3286                 std::wstring name = narrow_to_wide(player->getName());
3287
3288                 // Line to send to players
3289                 std::wstring line;
3290                 // Whether to send to the player that sent the line
3291                 bool send_to_sender = false;
3292                 // Whether to send to other players
3293                 bool send_to_others = false;
3294
3295                 // Local player gets all privileges regardless of
3296                 // what's set on their account.
3297                 u64 privs = getPlayerPrivs(player);
3298
3299                 // Parse commands
3300                 if(message[0] == L'/')
3301                 {
3302                         size_t strip_size = 1;
3303                         if (message[1] == L'#') // support old-style commans
3304                                 ++strip_size;
3305                         message = message.substr(strip_size);
3306
3307                         WStrfnd f1(message);
3308                         f1.next(L" "); // Skip over /#whatever
3309                         std::wstring paramstring = f1.next(L"");
3310
3311                         ServerCommandContext *ctx = new ServerCommandContext(
3312                                 str_split(message, L' '),
3313                                 paramstring,
3314                                 this,
3315                                 &m_env,
3316                                 player,
3317                                 privs);
3318
3319                         std::wstring reply(processServerCommand(ctx));
3320                         send_to_sender = ctx->flags & SEND_TO_SENDER;
3321                         send_to_others = ctx->flags & SEND_TO_OTHERS;
3322
3323                         if (ctx->flags & SEND_NO_PREFIX)
3324                                 line += reply;
3325                         else
3326                                 line += L"Server: " + reply;
3327
3328                         delete ctx;
3329
3330                 }
3331                 else
3332                 {
3333                         if(privs & PRIV_SHOUT)
3334                         {
3335                                 line += L"<";
3336                                 line += name;
3337                                 line += L"> ";
3338                                 line += message;
3339                                 send_to_others = true;
3340                         }
3341                         else
3342                         {
3343                                 line += L"Server: You are not allowed to shout";
3344                                 send_to_sender = true;
3345                         }
3346                 }
3347
3348                 if(line != L"")
3349                 {
3350                         dstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
3351
3352                         /*
3353                                 Send the message to clients
3354                         */
3355                         for(core::map<u16, RemoteClient*>::Iterator
3356                                 i = m_clients.getIterator();
3357                                 i.atEnd() == false; i++)
3358                         {
3359                                 // Get client and check that it is valid
3360                                 RemoteClient *client = i.getNode()->getValue();
3361                                 assert(client->peer_id == i.getNode()->getKey());
3362                                 if(client->serialization_version == SER_FMT_VER_INVALID)
3363                                         continue;
3364
3365                                 // Filter recipient
3366                                 bool sender_selected = (peer_id == client->peer_id);
3367                                 if(sender_selected == true && send_to_sender == false)
3368                                         continue;
3369                                 if(sender_selected == false && send_to_others == false)
3370                                         continue;
3371
3372                                 SendChatMessage(client->peer_id, line);
3373                         }
3374                 }
3375         }
3376         else if(command == TOSERVER_DAMAGE)
3377         {
3378                 if(g_settings.getBool("enable_damage"))
3379                 {
3380                         std::string datastring((char*)&data[2], datasize-2);
3381                         std::istringstream is(datastring, std::ios_base::binary);
3382                         u8 damage = readU8(is);
3383                         if(player->hp > damage)
3384                         {
3385                                 player->hp -= damage;
3386                         }
3387                         else
3388                         {
3389                                 player->hp = 0;
3390
3391                                 dstream<<"TODO: Server: TOSERVER_HP_DECREMENT: Player dies"
3392                                                 <<std::endl;
3393
3394                                 v3f pos = findSpawnPos(m_env.getServerMap());
3395                                 player->setPosition(pos);
3396                                 player->hp = 20;
3397                                 SendMovePlayer(player);
3398                                 SendPlayerHP(player);
3399
3400                                 //TODO: Throw items around
3401                         }
3402                 }
3403
3404                 SendPlayerHP(player);
3405         }
3406         else if(command == TOSERVER_PASSWORD)
3407         {
3408                 /*
3409                         [0] u16 TOSERVER_PASSWORD
3410                         [2] u8[28] old password
3411                         [30] u8[28] new password
3412                 */
3413
3414                 if(datasize != 2+PASSWORD_SIZE*2)
3415                         return;
3416                 /*char password[PASSWORD_SIZE];
3417                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3418                         password[i] = data[2+i];
3419                 password[PASSWORD_SIZE-1] = 0;*/
3420                 std::string oldpwd;
3421                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3422                 {
3423                         char c = data[2+i];
3424                         if(c == 0)
3425                                 break;
3426                         oldpwd += c;
3427                 }
3428                 std::string newpwd;
3429                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3430                 {
3431                         char c = data[2+PASSWORD_SIZE+i];
3432                         if(c == 0)
3433                                 break;
3434                         newpwd += c;
3435                 }
3436
3437                 dstream<<"Server: Client requests a password change from "
3438                                 <<"'"<<oldpwd<<"' to '"<<newpwd<<"'"<<std::endl;
3439
3440                 std::string playername = player->getName();
3441
3442                 if(m_authmanager.exists(playername) == false)
3443                 {
3444                         dstream<<"Server: playername not found in authmanager"<<std::endl;
3445                         // Wrong old password supplied!!
3446                         SendChatMessage(peer_id, L"playername not found in authmanager");
3447                         return;
3448                 }
3449
3450                 std::string checkpwd = m_authmanager.getPassword(playername);
3451
3452                 if(oldpwd != checkpwd)
3453                 {
3454                         dstream<<"Server: invalid old password"<<std::endl;
3455                         // Wrong old password supplied!!
3456                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
3457                         return;
3458                 }
3459
3460                 m_authmanager.setPassword(playername, newpwd);
3461
3462                 dstream<<"Server: password change successful for "<<playername
3463                                 <<std::endl;
3464                 SendChatMessage(peer_id, L"Password change successful");
3465         }
3466         else if (command == TOSERVER_PLAYERITEM)
3467         {
3468                 if (datasize < 2+2)
3469                         return;
3470
3471                 u16 item = readU16(&data[2]);
3472                 player->wieldItem(item);
3473                 SendWieldedItem(player);
3474         }
3475         else
3476         {
3477                 derr_server<<"WARNING: Server::ProcessData(): Ignoring "
3478                                 "unknown command "<<command<<std::endl;
3479         }
3480
3481         } //try
3482         catch(SendFailedException &e)
3483         {
3484                 derr_server<<"Server::ProcessData(): SendFailedException: "
3485                                 <<"what="<<e.what()
3486                                 <<std::endl;
3487         }
3488 }
3489
3490 void Server::onMapEditEvent(MapEditEvent *event)
3491 {
3492         //dstream<<"Server::onMapEditEvent()"<<std::endl;
3493         if(m_ignore_map_edit_events)
3494                 return;
3495         MapEditEvent *e = event->clone();
3496         m_unsent_map_edit_queue.push_back(e);
3497 }
3498
3499 Inventory* Server::getInventory(InventoryContext *c, std::string id)
3500 {
3501         if(id == "current_player")
3502         {
3503                 assert(c->current_player);
3504                 return &(c->current_player->inventory);
3505         }
3506
3507         Strfnd fn(id);
3508         std::string id0 = fn.next(":");
3509
3510         if(id0 == "nodemeta")
3511         {
3512                 v3s16 p;
3513                 p.X = stoi(fn.next(","));
3514                 p.Y = stoi(fn.next(","));
3515                 p.Z = stoi(fn.next(","));
3516                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3517                 if(meta)
3518                         return meta->getInventory();
3519                 dstream<<"nodemeta at ("<<p.X<<","<<p.Y<<","<<p.Z<<"): "
3520                                 <<"no metadata found"<<std::endl;
3521                 return NULL;
3522         }
3523
3524         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3525         return NULL;
3526 }
3527 void Server::inventoryModified(InventoryContext *c, std::string id)
3528 {
3529         if(id == "current_player")
3530         {
3531                 assert(c->current_player);
3532                 // Send inventory
3533                 UpdateCrafting(c->current_player->peer_id);
3534                 SendInventory(c->current_player->peer_id);
3535                 return;
3536         }
3537
3538         Strfnd fn(id);
3539         std::string id0 = fn.next(":");
3540
3541         if(id0 == "nodemeta")
3542         {
3543                 v3s16 p;
3544                 p.X = stoi(fn.next(","));
3545                 p.Y = stoi(fn.next(","));
3546                 p.Z = stoi(fn.next(","));
3547                 v3s16 blockpos = getNodeBlockPos(p);
3548
3549                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3550                 if(meta)
3551                         meta->inventoryModified();
3552
3553                 for(core::map<u16, RemoteClient*>::Iterator
3554                         i = m_clients.getIterator();
3555                         i.atEnd()==false; i++)
3556                 {
3557                         RemoteClient *client = i.getNode()->getValue();
3558                         client->SetBlockNotSent(blockpos);
3559                 }
3560
3561                 return;
3562         }
3563
3564         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3565 }
3566
3567 core::list<PlayerInfo> Server::getPlayerInfo()
3568 {
3569         DSTACK(__FUNCTION_NAME);
3570         JMutexAutoLock envlock(m_env_mutex);
3571         JMutexAutoLock conlock(m_con_mutex);
3572
3573         core::list<PlayerInfo> list;
3574
3575         core::list<Player*> players = m_env.getPlayers();
3576
3577         core::list<Player*>::Iterator i;
3578         for(i = players.begin();
3579                         i != players.end(); i++)
3580         {
3581                 PlayerInfo info;
3582
3583                 Player *player = *i;
3584
3585                 try{
3586                         con::Peer *peer = m_con.GetPeer(player->peer_id);
3587                         // Copy info from peer to info struct
3588                         info.id = peer->id;
3589                         info.address = peer->address;
3590                         info.avg_rtt = peer->avg_rtt;
3591                 }
3592                 catch(con::PeerNotFoundException &e)
3593                 {
3594                         // Set dummy peer info
3595                         info.id = 0;
3596                         info.address = Address(0,0,0,0,0);
3597                         info.avg_rtt = 0.0;
3598                 }
3599
3600                 snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
3601                 info.position = player->getPosition();
3602
3603                 list.push_back(info);
3604         }
3605
3606         return list;
3607 }
3608
3609
3610 void Server::peerAdded(con::Peer *peer)
3611 {
3612         DSTACK(__FUNCTION_NAME);
3613         dout_server<<"Server::peerAdded(): peer->id="
3614                         <<peer->id<<std::endl;
3615
3616         PeerChange c;
3617         c.type = PEER_ADDED;
3618         c.peer_id = peer->id;
3619         c.timeout = false;
3620         m_peer_change_queue.push_back(c);
3621 }
3622
3623 void Server::deletingPeer(con::Peer *peer, bool timeout)
3624 {
3625         DSTACK(__FUNCTION_NAME);
3626         dout_server<<"Server::deletingPeer(): peer->id="
3627                         <<peer->id<<", timeout="<<timeout<<std::endl;
3628
3629         PeerChange c;
3630         c.type = PEER_REMOVED;
3631         c.peer_id = peer->id;
3632         c.timeout = timeout;
3633         m_peer_change_queue.push_back(c);
3634 }
3635
3636 /*
3637         Static send methods
3638 */
3639
3640 void Server::SendHP(con::Connection &con, u16 peer_id, u8 hp)
3641 {
3642         DSTACK(__FUNCTION_NAME);
3643         std::ostringstream os(std::ios_base::binary);
3644
3645         writeU16(os, TOCLIENT_HP);
3646         writeU8(os, hp);
3647
3648         // Make data buffer
3649         std::string s = os.str();
3650         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3651         // Send as reliable
3652         con.Send(peer_id, 0, data, true);
3653 }
3654
3655 void Server::SendAccessDenied(con::Connection &con, u16 peer_id,
3656                 const std::wstring &reason)
3657 {
3658         DSTACK(__FUNCTION_NAME);
3659         std::ostringstream os(std::ios_base::binary);
3660
3661         writeU16(os, TOCLIENT_ACCESS_DENIED);
3662         os<<serializeWideString(reason);
3663
3664         // Make data buffer
3665         std::string s = os.str();
3666         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3667         // Send as reliable
3668         con.Send(peer_id, 0, data, true);
3669 }
3670
3671 /*
3672         Non-static send methods
3673 */
3674
3675 void Server::SendObjectData(float dtime)
3676 {
3677         DSTACK(__FUNCTION_NAME);
3678
3679         core::map<v3s16, bool> stepped_blocks;
3680
3681         for(core::map<u16, RemoteClient*>::Iterator
3682                 i = m_clients.getIterator();
3683                 i.atEnd() == false; i++)
3684         {
3685                 u16 peer_id = i.getNode()->getKey();
3686                 RemoteClient *client = i.getNode()->getValue();
3687                 assert(client->peer_id == peer_id);
3688
3689                 if(client->serialization_version == SER_FMT_VER_INVALID)
3690                         continue;
3691
3692                 client->SendObjectData(this, dtime, stepped_blocks);
3693         }
3694 }
3695
3696 void Server::SendPlayerInfos()
3697 {
3698         DSTACK(__FUNCTION_NAME);
3699
3700         //JMutexAutoLock envlock(m_env_mutex);
3701
3702         // Get connected players
3703         core::list<Player*> players = m_env.getPlayers(true);
3704
3705         u32 player_count = players.getSize();
3706         u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
3707
3708         SharedBuffer<u8> data(datasize);
3709         writeU16(&data[0], TOCLIENT_PLAYERINFO);
3710
3711         u32 start = 2;
3712         core::list<Player*>::Iterator i;
3713         for(i = players.begin();
3714                         i != players.end(); i++)
3715         {
3716                 Player *player = *i;
3717
3718                 /*dstream<<"Server sending player info for player with "
3719                                 "peer_id="<<player->peer_id<<std::endl;*/
3720
3721                 writeU16(&data[start], player->peer_id);
3722                 memset((char*)&data[start+2], 0, PLAYERNAME_SIZE);
3723                 snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
3724                 start += 2+PLAYERNAME_SIZE;
3725         }
3726
3727         //JMutexAutoLock conlock(m_con_mutex);
3728
3729         // Send as reliable
3730         m_con.SendToAll(0, data, true);
3731 }
3732
3733 void Server::SendInventory(u16 peer_id)
3734 {
3735         DSTACK(__FUNCTION_NAME);
3736
3737         Player* player = m_env.getPlayer(peer_id);
3738         assert(player);
3739
3740         /*
3741                 Serialize it
3742         */
3743
3744         std::ostringstream os;
3745         //os.imbue(std::locale("C"));
3746
3747         player->inventory.serialize(os);
3748
3749         std::string s = os.str();
3750
3751         SharedBuffer<u8> data(s.size()+2);
3752         writeU16(&data[0], TOCLIENT_INVENTORY);
3753         memcpy(&data[2], s.c_str(), s.size());
3754
3755         // Send as reliable
3756         m_con.Send(peer_id, 0, data, true);
3757 }
3758
3759 std::string getWieldedItemString(const Player *player)
3760 {
3761         const InventoryItem *item = player->getWieldItem();
3762         if (item == NULL)
3763                 return std::string("");
3764         std::ostringstream os(std::ios_base::binary);
3765         item->serialize(os);
3766         return os.str();
3767 }
3768
3769 void Server::SendWieldedItem(const Player* player)
3770 {
3771         DSTACK(__FUNCTION_NAME);
3772
3773         assert(player);
3774
3775         std::ostringstream os(std::ios_base::binary);
3776
3777         writeU16(os, TOCLIENT_PLAYERITEM);
3778         writeU16(os, 1);
3779         writeU16(os, player->peer_id);
3780         os<<serializeString(getWieldedItemString(player));
3781
3782         // Make data buffer
3783         std::string s = os.str();
3784         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3785
3786         m_con.SendToAll(0, data, true);
3787 }
3788
3789 void Server::SendPlayerItems()
3790 {
3791         DSTACK(__FUNCTION_NAME);
3792
3793         std::ostringstream os(std::ios_base::binary);
3794         core::list<Player *> players = m_env.getPlayers(true);
3795
3796         writeU16(os, TOCLIENT_PLAYERITEM);
3797         writeU16(os, players.size());
3798         core::list<Player *>::Iterator i;
3799         for(i = players.begin(); i != players.end(); ++i)
3800         {
3801                 Player *p = *i;
3802                 writeU16(os, p->peer_id);
3803                 os<<serializeString(getWieldedItemString(p));
3804         }
3805
3806         // Make data buffer
3807         std::string s = os.str();
3808         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3809
3810         m_con.SendToAll(0, data, true);
3811 }
3812
3813 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3814 {
3815         DSTACK(__FUNCTION_NAME);
3816
3817         std::ostringstream os(std::ios_base::binary);
3818         u8 buf[12];
3819
3820         // Write command
3821         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3822         os.write((char*)buf, 2);
3823
3824         // Write length
3825         writeU16(buf, message.size());
3826         os.write((char*)buf, 2);
3827
3828         // Write string
3829         for(u32 i=0; i<message.size(); i++)
3830         {
3831                 u16 w = message[i];
3832                 writeU16(buf, w);
3833                 os.write((char*)buf, 2);
3834         }
3835
3836         // Make data buffer
3837         std::string s = os.str();
3838         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3839         // Send as reliable
3840         m_con.Send(peer_id, 0, data, true);
3841 }
3842
3843 void Server::BroadcastChatMessage(const std::wstring &message)
3844 {
3845         for(core::map<u16, RemoteClient*>::Iterator
3846                 i = m_clients.getIterator();
3847                 i.atEnd() == false; i++)
3848         {
3849                 // Get client and check that it is valid
3850                 RemoteClient *client = i.getNode()->getValue();
3851                 assert(client->peer_id == i.getNode()->getKey());
3852                 if(client->serialization_version == SER_FMT_VER_INVALID)
3853                         continue;
3854
3855                 SendChatMessage(client->peer_id, message);
3856         }
3857 }
3858
3859 void Server::SendPlayerHP(Player *player)
3860 {
3861         SendHP(m_con, player->peer_id, player->hp);
3862 }
3863
3864 void Server::SendMovePlayer(Player *player)
3865 {
3866         DSTACK(__FUNCTION_NAME);
3867         std::ostringstream os(std::ios_base::binary);
3868
3869         writeU16(os, TOCLIENT_MOVE_PLAYER);
3870         writeV3F1000(os, player->getPosition());
3871         writeF1000(os, player->getPitch());
3872         writeF1000(os, player->getYaw());
3873
3874         {
3875                 v3f pos = player->getPosition();
3876                 f32 pitch = player->getPitch();
3877                 f32 yaw = player->getYaw();
3878                 dstream<<"Server sending TOCLIENT_MOVE_PLAYER"
3879                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3880                                 <<" pitch="<<pitch
3881                                 <<" yaw="<<yaw
3882                                 <<std::endl;
3883         }
3884
3885         // Make data buffer
3886         std::string s = os.str();
3887         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3888         // Send as reliable
3889         m_con.Send(player->peer_id, 0, data, true);
3890 }
3891
3892 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3893         core::list<u16> *far_players, float far_d_nodes)
3894 {
3895         float maxd = far_d_nodes*BS;
3896         v3f p_f = intToFloat(p, BS);
3897
3898         // Create packet
3899         u32 replysize = 8;
3900         SharedBuffer<u8> reply(replysize);
3901         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3902         writeS16(&reply[2], p.X);
3903         writeS16(&reply[4], p.Y);
3904         writeS16(&reply[6], p.Z);
3905
3906         for(core::map<u16, RemoteClient*>::Iterator
3907                 i = m_clients.getIterator();
3908                 i.atEnd() == false; i++)
3909         {
3910                 // Get client and check that it is valid
3911                 RemoteClient *client = i.getNode()->getValue();
3912                 assert(client->peer_id == i.getNode()->getKey());
3913                 if(client->serialization_version == SER_FMT_VER_INVALID)
3914                         continue;
3915
3916                 // Don't send if it's the same one
3917                 if(client->peer_id == ignore_id)
3918                         continue;
3919
3920                 if(far_players)
3921                 {
3922                         // Get player
3923                         Player *player = m_env.getPlayer(client->peer_id);
3924                         if(player)
3925                         {
3926                                 // If player is far away, only set modified blocks not sent
3927                                 v3f player_pos = player->getPosition();
3928                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3929                                 {
3930                                         far_players->push_back(client->peer_id);
3931                                         continue;
3932                                 }
3933                         }
3934                 }
3935
3936                 // Send as reliable
3937                 m_con.Send(client->peer_id, 0, reply, true);
3938         }
3939 }
3940
3941 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3942                 core::list<u16> *far_players, float far_d_nodes)
3943 {
3944         float maxd = far_d_nodes*BS;
3945         v3f p_f = intToFloat(p, BS);
3946
3947         for(core::map<u16, RemoteClient*>::Iterator
3948                 i = m_clients.getIterator();
3949                 i.atEnd() == false; i++)
3950         {
3951                 // Get client and check that it is valid
3952                 RemoteClient *client = i.getNode()->getValue();
3953                 assert(client->peer_id == i.getNode()->getKey());
3954                 if(client->serialization_version == SER_FMT_VER_INVALID)
3955                         continue;
3956
3957                 // Don't send if it's the same one
3958                 if(client->peer_id == ignore_id)
3959                         continue;
3960
3961                 if(far_players)
3962                 {
3963                         // Get player
3964                         Player *player = m_env.getPlayer(client->peer_id);
3965                         if(player)
3966                         {
3967                                 // If player is far away, only set modified blocks not sent
3968                                 v3f player_pos = player->getPosition();
3969                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3970                                 {
3971                                         far_players->push_back(client->peer_id);
3972                                         continue;
3973                                 }
3974                         }
3975                 }
3976
3977                 // Create packet
3978                 u32 replysize = 8 + MapNode::serializedLength(client->serialization_version);
3979                 SharedBuffer<u8> reply(replysize);
3980                 writeU16(&reply[0], TOCLIENT_ADDNODE);
3981                 writeS16(&reply[2], p.X);
3982                 writeS16(&reply[4], p.Y);
3983                 writeS16(&reply[6], p.Z);
3984                 n.serialize(&reply[8], client->serialization_version);
3985
3986                 // Send as reliable
3987                 m_con.Send(client->peer_id, 0, reply, true);
3988         }
3989 }
3990
3991 void Server::setBlockNotSent(v3s16 p)
3992 {
3993         for(core::map<u16, RemoteClient*>::Iterator
3994                 i = m_clients.getIterator();
3995                 i.atEnd()==false; i++)
3996         {
3997                 RemoteClient *client = i.getNode()->getValue();
3998                 client->SetBlockNotSent(p);
3999         }
4000 }
4001
4002 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
4003 {
4004         DSTACK(__FUNCTION_NAME);
4005
4006         v3s16 p = block->getPos();
4007
4008 #if 0
4009         // Analyze it a bit
4010         bool completely_air = true;
4011         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
4012         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
4013         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
4014         {
4015                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
4016                 {
4017                         completely_air = false;
4018                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
4019                 }
4020         }
4021
4022         // Print result
4023         dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
4024         if(completely_air)
4025                 dstream<<"[completely air] ";
4026         dstream<<std::endl;
4027 #endif
4028
4029         /*
4030                 Create a packet with the block in the right format
4031         */
4032
4033         std::ostringstream os(std::ios_base::binary);
4034         block->serialize(os, ver);
4035         std::string s = os.str();
4036         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
4037
4038         u32 replysize = 8 + blockdata.getSize();
4039         SharedBuffer<u8> reply(replysize);
4040         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
4041         writeS16(&reply[2], p.X);
4042         writeS16(&reply[4], p.Y);
4043         writeS16(&reply[6], p.Z);
4044         memcpy(&reply[8], *blockdata, blockdata.getSize());
4045
4046         /*dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4047                         <<":  \tpacket size: "<<replysize<<std::endl;*/
4048
4049         /*
4050                 Send packet
4051         */
4052         m_con.Send(peer_id, 1, reply, true);
4053 }
4054
4055 void Server::SendBlocks(float dtime)
4056 {
4057         DSTACK(__FUNCTION_NAME);
4058
4059         JMutexAutoLock envlock(m_env_mutex);
4060         JMutexAutoLock conlock(m_con_mutex);
4061
4062         //TimeTaker timer("Server::SendBlocks");
4063
4064         core::array<PrioritySortedBlockTransfer> queue;
4065
4066         s32 total_sending = 0;
4067
4068         {
4069                 ScopeProfiler sp(&g_profiler, "Server: selecting blocks for sending");
4070
4071                 for(core::map<u16, RemoteClient*>::Iterator
4072                         i = m_clients.getIterator();
4073                         i.atEnd() == false; i++)
4074                 {
4075                         RemoteClient *client = i.getNode()->getValue();
4076                         assert(client->peer_id == i.getNode()->getKey());
4077
4078                         total_sending += client->SendingCount();
4079
4080                         if(client->serialization_version == SER_FMT_VER_INVALID)
4081                                 continue;
4082
4083                         client->GetNextBlocks(this, dtime, queue);
4084                 }
4085         }
4086
4087         // Sort.
4088         // Lowest priority number comes first.
4089         // Lowest is most important.
4090         queue.sort();
4091
4092         for(u32 i=0; i<queue.size(); i++)
4093         {
4094                 //TODO: Calculate limit dynamically
4095                 if(total_sending >= g_settings.getS32
4096                                 ("max_simultaneous_block_sends_server_total"))
4097                         break;
4098
4099                 PrioritySortedBlockTransfer q = queue[i];
4100
4101                 MapBlock *block = NULL;
4102                 try
4103                 {
4104                         block = m_env.getMap().getBlockNoCreate(q.pos);
4105                 }
4106                 catch(InvalidPositionException &e)
4107                 {
4108                         continue;
4109                 }
4110
4111                 RemoteClient *client = getClient(q.peer_id);
4112
4113                 SendBlockNoLock(q.peer_id, block, client->serialization_version);
4114
4115                 client->SentBlock(q.pos);
4116
4117                 total_sending++;
4118         }
4119 }
4120
4121 /*
4122         Something random
4123 */
4124
4125 void Server::UpdateCrafting(u16 peer_id)
4126 {
4127         DSTACK(__FUNCTION_NAME);
4128
4129         Player* player = m_env.getPlayer(peer_id);
4130         assert(player);
4131
4132         /*
4133                 Calculate crafting stuff
4134         */
4135         if(g_settings.getBool("creative_mode") == false)
4136         {
4137                 InventoryList *clist = player->inventory.getList("craft");
4138                 InventoryList *rlist = player->inventory.getList("craftresult");
4139
4140                 if(rlist->getUsedSlots() == 0)
4141                         player->craftresult_is_preview = true;
4142
4143                 if(rlist && player->craftresult_is_preview)
4144                 {
4145                         rlist->clearItems();
4146                 }
4147                 if(clist && rlist && player->craftresult_is_preview)
4148                 {
4149                         InventoryItem *items[9];
4150                         for(u16 i=0; i<9; i++)
4151                         {
4152                                 items[i] = clist->getItem(i);
4153                         }
4154
4155                         // Get result of crafting grid
4156                         InventoryItem *result = craft_get_result(items);
4157                         if(result)
4158                                 rlist->addItem(result);
4159                 }
4160
4161         } // if creative_mode == false
4162 }
4163
4164 RemoteClient* Server::getClient(u16 peer_id)
4165 {
4166         DSTACK(__FUNCTION_NAME);
4167         //JMutexAutoLock lock(m_con_mutex);
4168         core::map<u16, RemoteClient*>::Node *n;
4169         n = m_clients.find(peer_id);
4170         // A client should exist for all peers
4171         assert(n != NULL);
4172         return n->getValue();
4173 }
4174
4175 std::wstring Server::getStatusString()
4176 {
4177         std::wostringstream os(std::ios_base::binary);
4178         os<<L"# Server: ";
4179         // Version
4180         os<<L"version="<<narrow_to_wide(VERSION_STRING);
4181         // Uptime
4182         os<<L", uptime="<<m_uptime.get();
4183         // Information about clients
4184         os<<L", clients={";
4185         for(core::map<u16, RemoteClient*>::Iterator
4186                 i = m_clients.getIterator();
4187                 i.atEnd() == false; i++)
4188         {
4189                 // Get client and check that it is valid
4190                 RemoteClient *client = i.getNode()->getValue();
4191                 assert(client->peer_id == i.getNode()->getKey());
4192                 if(client->serialization_version == SER_FMT_VER_INVALID)
4193                         continue;
4194                 // Get player
4195                 Player *player = m_env.getPlayer(client->peer_id);
4196                 // Get name of player
4197                 std::wstring name = L"unknown";
4198                 if(player != NULL)
4199                         name = narrow_to_wide(player->getName());
4200                 // Add name to information string
4201                 os<<name<<L",";
4202         }
4203         os<<L"}";
4204         if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == false)
4205                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4206         if(g_settings.get("motd") != "")
4207                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings.get("motd"));
4208         return os.str();
4209 }
4210
4211 v3f findSpawnPos(ServerMap &map)
4212 {
4213         //return v3f(50,50,50)*BS;
4214
4215         v2s16 nodepos;
4216         s16 groundheight = 0;
4217
4218 #if 0
4219         nodepos = v2s16(0,0);
4220         groundheight = 20;
4221 #endif
4222
4223 #if 1
4224         // Try to find a good place a few times
4225         for(s32 i=0; i<1000; i++)
4226         {
4227                 s32 range = 1 + i;
4228                 // We're going to try to throw the player to this position
4229                 nodepos = v2s16(-range + (myrand()%(range*2)),
4230                                 -range + (myrand()%(range*2)));
4231                 v2s16 sectorpos = getNodeSectorPos(nodepos);
4232                 // Get sector (NOTE: Don't get because it's slow)
4233                 //m_env.getMap().emergeSector(sectorpos);
4234                 // Get ground height at point (fallbacks to heightmap function)
4235                 groundheight = map.findGroundLevel(nodepos);
4236                 // Don't go underwater
4237                 if(groundheight < WATER_LEVEL)
4238                 {
4239                         //dstream<<"-> Underwater"<<std::endl;
4240                         continue;
4241                 }
4242                 // Don't go to high places
4243                 if(groundheight > WATER_LEVEL + 4)
4244                 {
4245                         //dstream<<"-> Underwater"<<std::endl;
4246                         continue;
4247                 }
4248
4249                 // Found a good place
4250                 //dstream<<"Searched through "<<i<<" places."<<std::endl;
4251                 break;
4252         }
4253 #endif
4254
4255         // If no suitable place was not found, go above water at least.
4256         if(groundheight < WATER_LEVEL)
4257                 groundheight = WATER_LEVEL;
4258
4259         return intToFloat(v3s16(
4260                         nodepos.X,
4261                         groundheight + 3,
4262                         nodepos.Y
4263                         ), BS);
4264 }
4265
4266 Player *Server::emergePlayer(const char *name, const char *password, u16 peer_id)
4267 {
4268         /*
4269                 Try to get an existing player
4270         */
4271         Player *player = m_env.getPlayer(name);
4272         if(player != NULL)
4273         {
4274                 // If player is already connected, cancel
4275                 if(player->peer_id != 0)
4276                 {
4277                         dstream<<"emergePlayer(): Player already connected"<<std::endl;
4278                         return NULL;
4279                 }
4280
4281                 // Got one.
4282                 player->peer_id = peer_id;
4283
4284                 // Reset inventory to creative if in creative mode
4285                 if(g_settings.getBool("creative_mode"))
4286                 {
4287                         // Warning: double code below
4288                         // Backup actual inventory
4289                         player->inventory_backup = new Inventory();
4290                         *(player->inventory_backup) = player->inventory;
4291                         // Set creative inventory
4292                         craft_set_creative_inventory(player);
4293                 }
4294
4295                 return player;
4296         }
4297
4298         /*
4299                 If player with the wanted peer_id already exists, cancel.
4300         */
4301         if(m_env.getPlayer(peer_id) != NULL)
4302         {
4303                 dstream<<"emergePlayer(): Player with wrong name but same"
4304                                 " peer_id already exists"<<std::endl;
4305                 return NULL;
4306         }
4307
4308         /*
4309                 Create a new player
4310         */
4311         {
4312                 player = new ServerRemotePlayer();
4313                 //player->peer_id = c.peer_id;
4314                 //player->peer_id = PEER_ID_INEXISTENT;
4315                 player->peer_id = peer_id;
4316                 player->updateName(name);
4317                 m_authmanager.add(name);
4318                 m_authmanager.setPassword(name, password);
4319                 m_authmanager.setPrivs(name,
4320                                 stringToPrivs(g_settings.get("default_privs")));
4321
4322                 /*
4323                         Set player position
4324                 */
4325
4326                 dstream<<"Server: Finding spawn place for player \""
4327                                 <<player->getName()<<"\""<<std::endl;
4328
4329                 v3f pos = findSpawnPos(m_env.getServerMap());
4330
4331                 player->setPosition(pos);
4332
4333                 /*
4334                         Add player to environment
4335                 */
4336
4337                 m_env.addPlayer(player);
4338
4339                 /*
4340                         Add stuff to inventory
4341                 */
4342
4343                 if(g_settings.getBool("creative_mode"))
4344                 {
4345                         // Warning: double code above
4346                         // Backup actual inventory
4347                         player->inventory_backup = new Inventory();
4348                         *(player->inventory_backup) = player->inventory;
4349                         // Set creative inventory
4350                         craft_set_creative_inventory(player);
4351                 }
4352                 else if(g_settings.getBool("give_initial_stuff"))
4353                 {
4354                         craft_give_initial_stuff(player);
4355                 }
4356
4357                 return player;
4358
4359         } // create new player
4360 }
4361
4362 void Server::handlePeerChange(PeerChange &c)
4363 {
4364         JMutexAutoLock envlock(m_env_mutex);
4365         JMutexAutoLock conlock(m_con_mutex);
4366
4367         if(c.type == PEER_ADDED)
4368         {
4369                 /*
4370                         Add
4371                 */
4372
4373                 // Error check
4374                 core::map<u16, RemoteClient*>::Node *n;
4375                 n = m_clients.find(c.peer_id);
4376                 // The client shouldn't already exist
4377                 assert(n == NULL);
4378
4379                 // Create client
4380                 RemoteClient *client = new RemoteClient();
4381                 client->peer_id = c.peer_id;
4382                 m_clients.insert(client->peer_id, client);
4383
4384         } // PEER_ADDED
4385         else if(c.type == PEER_REMOVED)
4386         {
4387                 /*
4388                         Delete
4389                 */
4390
4391                 // Error check
4392                 core::map<u16, RemoteClient*>::Node *n;
4393                 n = m_clients.find(c.peer_id);
4394                 // The client should exist
4395                 assert(n != NULL);
4396
4397                 /*
4398                         Mark objects to be not known by the client
4399                 */
4400                 RemoteClient *client = n->getValue();
4401                 // Handle objects
4402                 for(core::map<u16, bool>::Iterator
4403                                 i = client->m_known_objects.getIterator();
4404                                 i.atEnd()==false; i++)
4405                 {
4406                         // Get object
4407                         u16 id = i.getNode()->getKey();
4408                         ServerActiveObject* obj = m_env.getActiveObject(id);
4409
4410                         if(obj && obj->m_known_by_count > 0)
4411                                 obj->m_known_by_count--;
4412                 }
4413
4414                 // Collect information about leaving in chat
4415                 std::wstring message;
4416                 {
4417                         std::wstring name = L"unknown";
4418                         Player *player = m_env.getPlayer(c.peer_id);
4419                         if(player != NULL)
4420                                 name = narrow_to_wide(player->getName());
4421
4422                         message += L"*** ";
4423                         message += name;
4424                         message += L" left game";
4425                         if(c.timeout)
4426                                 message += L" (timed out)";
4427                 }
4428
4429                 /*// Delete player
4430                 {
4431                         m_env.removePlayer(c.peer_id);
4432                 }*/
4433
4434                 // Set player client disconnected
4435                 {
4436                         Player *player = m_env.getPlayer(c.peer_id);
4437                         if(player != NULL)
4438                                 player->peer_id = 0;
4439                 }
4440
4441                 // Delete client
4442                 delete m_clients[c.peer_id];
4443                 m_clients.remove(c.peer_id);
4444
4445                 // Send player info to all remaining clients
4446                 SendPlayerInfos();
4447
4448                 // Send leave chat message to all remaining clients
4449                 BroadcastChatMessage(message);
4450
4451         } // PEER_REMOVED
4452         else
4453         {
4454                 assert(0);
4455         }
4456 }
4457
4458 void Server::handlePeerChanges()
4459 {
4460         while(m_peer_change_queue.size() > 0)
4461         {
4462                 PeerChange c = m_peer_change_queue.pop_front();
4463
4464                 dout_server<<"Server: Handling peer change: "
4465                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
4466                                 <<std::endl;
4467
4468                 handlePeerChange(c);
4469         }
4470 }
4471
4472 u64 Server::getPlayerPrivs(Player *player)
4473 {
4474         if(player==NULL)
4475                 return 0;
4476         std::string playername = player->getName();
4477         // Local player gets all privileges regardless of
4478         // what's set on their account.
4479         if(g_settings.get("name") == playername)
4480         {
4481                 return PRIV_ALL;
4482         }
4483         else
4484         {
4485                 return getPlayerAuthPrivs(playername);
4486         }
4487 }
4488
4489 void dedicated_server_loop(Server &server, bool &kill)
4490 {
4491         DSTACK(__FUNCTION_NAME);
4492
4493         dstream<<DTIME<<std::endl;
4494         dstream<<"========================"<<std::endl;
4495         dstream<<"Running dedicated server"<<std::endl;
4496         dstream<<"========================"<<std::endl;
4497         dstream<<std::endl;
4498
4499         IntervalLimiter m_profiler_interval;
4500
4501         for(;;)
4502         {
4503                 // This is kind of a hack but can be done like this
4504                 // because server.step() is very light
4505                 {
4506                         ScopeProfiler sp(&g_profiler, "dedicated server sleep");
4507                         sleep_ms(30);
4508                 }
4509                 server.step(0.030);
4510
4511                 if(server.getShutdownRequested() || kill)
4512                 {
4513                         dstream<<DTIME<<" dedicated_server_loop(): Quitting."<<std::endl;
4514                         break;
4515                 }
4516
4517                 /*
4518                         Profiler
4519                 */
4520                 float profiler_print_interval =
4521                                 g_settings.getFloat("profiler_print_interval");
4522                 if(profiler_print_interval != 0)
4523                 {
4524                         if(m_profiler_interval.step(0.030, profiler_print_interval))
4525                         {
4526                                 dstream<<"Profiler:"<<std::endl;
4527                                 g_profiler.print(dstream);
4528                                 g_profiler.clear();
4529                         }
4530                 }
4531
4532                 /*
4533                         Player info
4534                 */
4535                 static int counter = 0;
4536                 counter--;
4537                 if(counter <= 0)
4538                 {
4539                         counter = 10;
4540
4541                         core::list<PlayerInfo> list = server.getPlayerInfo();
4542                         core::list<PlayerInfo>::Iterator i;
4543                         static u32 sum_old = 0;
4544                         u32 sum = PIChecksum(list);
4545                         if(sum != sum_old)
4546                         {
4547                                 dstream<<DTIME<<"Player info:"<<std::endl;
4548                                 for(i=list.begin(); i!=list.end(); i++)
4549                                 {
4550                                         i->PrintLine(&dstream);
4551                                 }
4552                         }
4553                         sum_old = sum;
4554                 }
4555         }
4556 }
4557
4558